JP5463497B2 - Small sprayer - Google Patents

Description

  The present invention relates to a small spraying device used for spraying sprays such as medicines and fertilizers on a field or the like.

  2. Description of the Related Art Conventionally, a power spraying device having a predetermined drive source has been used in order to spray sprayed materials such as drugs and fertilizers on a field or the like. The power dispersal device generally has the following configuration. In other words, the power spraying device includes a spraying unit for spraying the sprayed material and a feeding unit for feeding out the sprayed material supplied to the spraying unit. The spraying unit includes a rotating body called a spinner, an impeller, or the like, which is provided in a predetermined case and is rotatably provided with a motor, an engine, or the like as a drive source, and a longitudinal direction of the body as a rotation axis direction. And by using the ventilation and centrifugal force by rotation of this rotary body, a scattered material is sprayed from a predetermined spraying port (discharge port).

  With regard to such a power distribution device, there are devices used in a state of being worn by an operator (in a state worn by an operator) in addition to those mounted on a moving carriage having traveling wheels or the like (for example, worn) , See Patent Document 1). Patent Document 1 describes a back-fed power spreader. In the power spraying device of Patent Document 1, a tubular member is connected to an opening formed on one end side (one side on the left and right sides) of a case in which a spray port from which a medicine is discharged is housed in a rotating body such as a fan. It is constituted by. In such a configuration, since the spraying port is provided on one side of the left and right, it is necessary to change the direction (walking direction, etc.) of the worker who carries the apparatus in order to greatly change the spraying direction.

  Then, there exists a thing which has a sprinkle opening opened to the both sides of the left-right direction with respect to the front-back direction of a body as a structure of a power distribution device. In such a configuration, the spray ports are provided on both the left and right sides of the portion communicating with the inside of the case that houses a rotating body such as a fan. And switching between spraying from the left spraying port and spraying from the right spraying port is accompanied by switching of the route (discharge route) from the inside of the case to the left and right spraying ports and switching of the rotation direction of the rotating body. Done.

  Certainly, according to the configuration having the spray ports on the left and right sides, compared with the configuration where the spray tube is used, it is possible to improve the uniformity of the sprayed amount of the sprayed material and make the fuselage compact. Since the work for changing the orientation and the like can be omitted, the workability can be improved. However, in a configuration having spraying ports on both the left and right sides, a mechanism for switching a plurality of (two) spraying ports and a discharge path of the sprayed material with respect to the left and right spraying ports is required. For this reason, the structure of the power distribution device is complicated, and it is difficult to reduce the cost.

  In addition, the power distribution device is provided with a case that accommodates a rotating body such as a fan so that the rotation direction can be the same direction as the rotation axis of the rotation body. ) May be changed (see, for example, Patent Document 2). That is, in such a configuration, by rotating the case in the left-right direction, the direction of the spray port provided integrally with the case so as to communicate with the inside of the case is changed.

  On the other hand, as a power distribution device used in a state held by an operator, a front-end method used in a state where it is hung in front of an operator with respect to a backpack type device described in Patent Document 1 Things are being considered. That is, the front-type power distribution device is used in a state where it is suspended and held on the front side of the operator by using a band or the like.

  In such a front-end type power spreader, when the configuration in which the direction of the spreader is changed by the rotation of the case in the left-right direction as described above, the following problems are considered to occur. That is, in the front-spread type power spraying device, the spraying port is located on the front side of the operator. And this sprinkling port exists in the state which faces the upper side in the rotation range of the left-right direction. For this reason, when a sprayed material is discharged from a spraying port in the state where the spraying port turned upward, the sprayed product may hit an operator.

Japanese Patent Laid-Open No. 2000-4762 JP-A-2005-803

  The present invention has been made in view of the above problems, and the problem to be solved is that the structure can be simplified and simplified, the cost can be reduced, and the work can be reduced. An object of the present invention is to provide a small spraying device capable of sufficiently ensuring safety for a person.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, it is provided with the spreading | rotation rotary body which is provided rotatably and spreads a sprinkle by the rotation, and the case member which accommodates this spreading | spreading rotary body, and sprinkles a sprinkle using rotation of the said dispersion | spreading rotary body. The case member is provided so as to be rotatable about a rotation axis direction substantially the same direction as the rotation axis direction of the spreading rotator, and communicates with a space portion that accommodates the spreading rotator. And a spout that is an opening through which the sprinkled material energized by the rotation of the sprinkler rotator is discharged, and spraying the spatter discharged from the spout by rotation of the case member direction is switched in a plurality of directions, the compact spray device also comprises a rotatably provided feeding rotary member that feeds the spray material which is reserved in a predetermined storage portion by rotation toward the spraying rotary body With respect to the rotational position of the case member, a predetermined rotational position on both rotational directions opposite to each other with a rotational position where the spraying port faces a predetermined direction as a central position is defined from the spraying port. A spraying position where sprayed material is sprayed, and a detecting means for detecting that the rotating position of the case member is the spraying position is provided, and the rotating position of the case member is the spraying position by the detecting means. In a state where this is not detected, the rotation of at least one of the spreading rotator and the feeding rotator is configured to stop .

According to a second aspect of the present invention, there is provided a spraying rotator that is rotatably provided and sprays the sprinkled material by rotation thereof, and a case member that accommodates the sprinkling rotator, and sprays the spatter using the rotation of the spraying rotator. The case member is provided so as to be rotatable about a rotation axis direction substantially the same direction as the rotation axis direction of the spreading rotator, and communicates with a space portion that accommodates the spreading rotator. And a spout that is an opening through which the sprinkled material energized by the rotation of the sprinkler rotator is discharged, and spraying the spatter discharged from the spout by rotation of the case member The direction is switched to a plurality of directions, and the small spraying device includes a feeding rotating body that is rotatably provided and feeds the sprayed material stored in a predetermined storage portion toward the spraying rotating body. With respect to the rotational position of the case member, a predetermined rotational position on both rotational directions opposite to each other with a rotational position where the spraying port faces a predetermined direction as a central position is defined from the spraying port. Only when the rotation position of the case member is detected as the spray position, and the rotation position of the case member is detected as the spray position. , And a permitting means for permitting the rotation of the spreading rotator and the feeding rotator .

According to a third aspect of the present invention, there is provided a spraying rotator that is rotatably provided and sprays the sprayed material by the rotation thereof, and a case member that accommodates the spraying rotator, and sprays the sprayed material using the rotation of the spraying rotator. The case member is provided so as to be rotatable about a rotation axis direction substantially the same direction as the rotation axis direction of the spreading rotator, and communicates with a space portion that accommodates the spreading rotator. And a spout that is an opening through which the sprinkled material energized by the rotation of the sprinkler rotator is discharged, and spraying the spatter discharged from the spout by rotation of the case member The direction is switched to a plurality of directions, and the case member has an arcuate portion along the rotational shape of the spraying rotator and a center of the arcuate portion with respect to the arcuate portion as viewed in the rotational axis direction of the case member. VS through position A straight line that has a substantially U-shaped outer shape composed of linear portions extending in a substantially tangential direction from the position where the spraying port extends, and the spout is connected to the ends of the linear portions in the extending direction. It forms so that it may open with respect to the surface part represented as a shape part .

According to a fourth aspect of the present invention, there is provided a spraying rotator that is rotatably provided and sprays the sprinkled material by rotation thereof, and a case member that accommodates the sprinkling rotator, and sprays the spatter using the rotation of the spraying rotator. The case member is provided so as to be rotatable about a rotation axis direction substantially the same direction as the rotation axis direction of the spreading rotator, and communicates with a space portion that accommodates the spreading rotator. And a spout that is an opening through which the sprinkled material energized by the rotation of the sprinkler rotator is discharged, and spraying the spatter discharged from the spout by rotation of the case member The direction is switched to a plurality of directions, and the small-sized spraying device has a feeding unit that feeds the sprayed material toward the spraying rotator, and the feeding unit is rotatably provided and rotates according to the number of rotations. Vs. And a feeding drive source for rotating the feeding rotary body, wherein the rotation driving source and the feeding drive source are each constituted by an electric motor, When the rotation of the rotation drive source starts rotating, the rotation speed of the scattering rotating body detected based on the measured value of at least one of the current and voltage supplied to the rotation drive source is a predetermined rotation speed set in advance. Until the rotation speed of the spraying rotator is detected based on the measured value, the rotation speed of the spraying rotator reaches the predetermined rotation speed. The feeding drive source is controlled such that the amount of sprinkled material in the feeding section detected based on at least one of the measured values of current and voltage becomes a predetermined amount .

As effects of the present invention, the following effects can be obtained.
That is, according to the present invention, the structure can be simplified and simplified, the cost can be reduced, and the safety for the worker can be sufficiently ensured.

The front view which shows the whole structure of the small dispersion device which concerns on one Embodiment of this invention. Similarly rear view. Similarly left side view. Similarly right side view. Similarly upper perspective view. Side surface partially notched sectional drawing which shows the internal structure of a small dispersion device. The figure which shows the structure of a dispersion | spreading part. Explanatory drawing about switching of a spraying direction. The control block diagram of the small spraying apparatus which concerns on one Embodiment of this invention.

  Next, embodiments of the invention will be described. 1 is a front view showing the overall configuration of a small spraying apparatus according to an embodiment of the present invention, FIG. 2 is also a rear view, FIG. 3 is also a left side view, FIG. 4 is a right side view, and FIG. FIG. 6 is a partially cutaway side view showing the internal structure of the small spraying device, FIG. 7 is a diagram showing the configuration of the spraying unit, FIG. 8 is an explanatory diagram for switching the spraying direction, and FIG. It is a control block diagram of the small dispersion device concerning one embodiment.

  The small spraying device 3 according to the present embodiment is a power spraying device for spraying sprays such as drugs and fertilizers on a farm field or the like. The small spraying device 3 according to the present embodiment is of a front hanging type used in a state of being hung in front of an operator. That is, the small spraying device 3 is used in a state where it is suspended and held on the front side of the worker by using a band or the like, and sprays the sprayed material while being moved by walking by the worker. In the following description, the sprayed material sprayed by the small spraying device 3 is defined as a granular medicine, and the leftward direction in FIG. Therefore, the left-right direction in FIG. 2 corresponds to the left-right direction in the small spray device 3. Moreover, let the up-down direction in FIG.

  The small spray device 3 has a spray port 21 for discharging a medicine to be sprayed. The small spraying device 3 includes a spraying unit 20 that sprays the medicine and a feeding unit 30 for feeding out the medicine supplied to the spraying unit 20. The spraying unit 20 includes an impeller 22 that is rotated by a predetermined rotational drive source, and sprays the drug from the spraying port 21 using the rotation of the impeller 22. The feeding unit 30 supplies the medicine stored in the medicine tank 31 to the impeller 22 portion of the spraying unit 20 via a predetermined feeding mechanism. That is, in the small spray device 3, the medicine stored in the medicine tank 31 is delivered to the medicine discharge path via a predetermined delivery mechanism. This discharge path communicates with a space in which the impeller 22 is accommodated in the spray unit 20. And the chemical | medical agent supplied to the part of the impeller 22 via the discharge path | route is spread | dispersed by being discharge | released from the spraying port 21 with the ventilation and centrifugal force by rotation of the impeller 22. FIG.

  Below, the detailed structure of the small spraying apparatus 3 of this embodiment is demonstrated. As described above, the small spray device 3 includes the spray unit 20 and the feeding unit 30. The spraying unit 20 includes an impeller 22 and a spraying motor 23 as a predetermined rotational drive source that rotates the impeller 22.

  The spray motor 23 is provided in a state of being accommodated in a spray unit housing 24 included in the spray unit 20. The spray motor 23 is supported in a posture in which the axial direction of the output shaft (rotating shaft) is the front-rear horizontal direction in the spray portion housing 24.

  The impeller 22 is provided in a state in which it is housed in the impeller case 25. The impeller 22 is rotatably provided with the front-rear horizontal direction as a rotation axis direction. The impeller 22 has a plurality of (six in this embodiment) diffusion blades 22a. The diffusion blade 22 a is a thin plate portion that is substantially parallel to the front-rear direction and the radial direction of the impeller 22. The six diffusion blades 22a are provided at equal angular intervals in the circumferential direction of the impeller 22, and are arranged so as to be radial in a front view or the like. The number and shape of the diffusion blades 22a included in the impeller 22 are not particularly limited to the present embodiment.

  The impeller 22 is connected to the spraying motor 23 by being fixed to an output shaft that protrudes forward in the spraying motor 23 that is housed in the spraying unit housing 24. That is, in the spraying unit 20, the impeller 22 is provided in front of the spraying motor 23. Therefore, the impeller case 25 that houses the impeller 22 is provided on the front side of the spraying part housing 24 that houses the spraying motor 23. The impeller case 25 has an opening with respect to the internal space that houses the impeller 22, and this opening serves as a spray port 21 through which the sprayed medicine is discharged.

  The impeller 22 is provided so that its rotation direction can be switched. That is, the rotation direction of the impeller 22 is switched by switching the rotation direction of the spray motor 23 that rotates the impeller 22.

  In the sprinkling part 20 having such a configuration, the granular medicine dropped from the feeding part 30 toward the center part of the rotating impeller 22 moves along the inner peripheral surface of the impeller case 25 by the movement of the diffusion blade 22a. Then, it is transported upward, energized by blown air and centrifugal force by the rotation of the impeller 22, and sprayed by being discharged out of the impeller case 25 from the spray port 21. Here, by adjusting the rotational speed of the impeller 22, that is, the rotational speed (rotational speed) of the spray motor 23, the spraying distance of the medicine is adjusted. For example, when the number of rotations of the impeller 22 (the number of rotations of the spray motor 23) increases, the air flow rate and the centrifugal force increase, and the spraying distance becomes long. As described above, in the spraying unit 20, the medicine is sprayed from the predetermined spraying port 21 by using the air blown by the rotation of the impeller 22 and the centrifugal force.

  As described above, in the small spraying device 3 of the present embodiment, the impeller 22 serving as a spraying rotating body that is rotatably provided and sprays the sprayed material by the rotation, and the impeller case 25 serving as a case member that accommodates the impeller 22. And are provided.

  The feeding unit 30 delivers the medicine toward the impeller 22. The feeding unit 30 is configured above the spraying unit 20. The feeding unit 30 includes a medicine tank 31 for storing medicines, a mesa shutter 32 for feeding the medicine in the medicine tank 31 to the spraying unit 20, and a feeding motor 33 for driving the mesa shutter 32. Have.

  The feeding motor 33 is provided in a state of being accommodated in a feeding portion housing 34 included in the feeding portion 30. The feeding motor 33 is supported in a posture in which the axial direction of the output shaft (rotating shaft) is in the horizontal direction in the feeding portion housing 34. Specifically, in the present embodiment, the feeding portion housing 34 is formed in a substantially cross shape when viewed from the front. A feeding motor 33 is housed in the left portion of the substantially cross shape of the feeding portion housing 34. In the present embodiment, the feeding portion housing 34 is configured integrally with the spreading portion housing 24. That is, with respect to the feeding portion housing 34, the spreading portion housing 24 is integrally present below the feeding portion housing 34.

  The mesa shutter 32 is provided in a state of being housed in the feeding portion housing 34. The mesa shutter 32 is rotatably provided with the horizontal direction as the rotation axis direction. As shown in FIG. 6, the mesa shutter 32 includes a substantially spindle-shaped main body 32 a and a plurality of (eight in the present embodiment) feeding blades 32 b formed around the main body 32 a. The feeding blade 32 b is a thin plate-like portion that is substantially parallel to the left-right direction and the radial direction of the mezzanine shutter 32. The eight feeding blades 32b are provided at equal angular intervals in the circumferential direction of the mezzara shutter 32, and are arranged so as to be radial in a side view. Note that the number, shape, and the like of the feeding blades 32b included in the mesa shutter 32 are not particularly limited to the present embodiment.

  The mesa shutter 32 is connected to the feeding motor 33 by being fixed to an output shaft that protrudes to the side (right side) in the feeding motor 33 accommodated in the feeding portion housing 34. . In other words, in the feeding unit 30, the mesa shutter 32 is provided on the right side of the feeding motor 33. The mesa shutter 32 is provided in a shutter accommodating portion 34a formed in the feeding portion housing 34 (see FIG. 6).

  The shutter accommodating portion 34 a is a space portion formed in the central portion of the substantially cross shape in the feeding portion housing 34. As shown in FIG. 6, the mesa shutter accommodating portion 34 a has a shape that follows the rotational shape of the mezza shutter 32. The upper portion of the substantially cross shape of the feeding portion housing 34 is configured as a feeding case portion 35. The feeding case portion 35 is a substantially cylindrical portion that opens upward. That is, the space formed by the feeding case portion 35 (the internal space of the feeding case portion 35) has a substantially cylindrical shape with an upper side opened. Further, the inner space of the feeding case portion 35 is reduced in a conical shape (funnel shape) toward the lower side and communicated with the shutter accommodating portion 34a. The shutter accommodating portion 34 a communicates with the inner space of the feeding case portion 35 by opening in a state facing the inner space of the feeding case portion 35.

  On the opposite side of the shutter housing portion 34a from the feeding case portion 35 side, that is, on the lower side, a feeding passage 34b is formed. The feeding passage 34b is formed obliquely forward and downward from the shutter accommodating portion 34a. The feeding passage 34 b is formed over the feeding portion housing 34 and the spraying portion housing 24 that are integrally configured as described above, and opens into the inner space of the impeller case 25 toward the vicinity of the center portion of the impeller 22. In other words, the feeding passage 34 b is formed such that the upper end side communicates with the internal space of the feeding case part 35 via the shutter accommodating portion 34 a and the lower end side communicates with the inner space of the impeller case 25.

  The medicine tank 31 is provided on the upper side of the feeding portion housing 34. The medicine tank 31 is provided in a state of being attached to a feeding case portion 35 constituting the feeding portion housing 34. Specifically, a connecting portion 31 b (see FIG. 6) having a cylindrical shape having a shape along the internal space of the feeding case portion 35 is formed at one end portion of the medicine tank 31. The medicine tank 31 is attached to the feeding case portion 35 by inserting the connecting portion 31b into the feeding case portion 35 from above. The medicine tank 31 is attached to the feeding case portion 35 and is in a state of communicating with the internal space of the feeding case portion 35. With this configuration, the medicine stored in the medicine tank 31 is guided into the feeding case portion 35 by gravity. Further, the medicine tank 31 has an opening formed at a position on the upper side when attached to the feeding case portion 35, and this opening is configured to be opened and closed by attaching and detaching the lid 31a. That is, the medicine is supplied to the medicine tank 31 through the opening to which the lid 31a is attached.

  In the feeding section 30 having such a configuration, the medicine guided from the medicine tank 31 into the feeding case section 35 is sent out to the feeding passage 34b by a predetermined amount by the rotation of the mezzara shutter 32. That is, the shutter accommodating portion 34 a that accommodates the mezzanine shutter 32 has a shape that conforms to the rotational shape of the mesa shutter 32 as described above, and opens toward the feeding case portion 35. For this reason, in a state where the mezzanine shutter 32 is not rotating, the dropping of the medicine from the feeding case portion 35 to the feeding passage 34b is restricted. On the other hand, the medicinal shutter 32 rotates, so that the medicine received between the adjacent feeding blades 32b is sent out to the feeding passage 34b. As a result, the medicine in the medicine tank 31 is fed out by a predetermined amount to the feeding path 34b by the rotation of the mezzara shutter 32. Then, the medicine drawn out by the rotation of the mezzara shutter 32 is guided to the central portion of the impeller 22 through the feeding passage 34b.

  As described above, in the small spray device 3 of the present embodiment, as a feeding rotary body that is rotatably provided and feeds the medicine stored in the medicine tank 31 that is a predetermined storage portion toward the impeller 22 by the rotation. A mesa shutter 32 is provided. In the medicine dispensing mechanism in the small spraying device 3, the amount of medicine delivered from the dispensing case section 35 is adjusted by changing the rotation speed of the mezzara shutter 32. As described above, the mesa shutter 32 functions as a feeding amount adjusting member included in the feeding unit 30. Further, with respect to the mesa shutter 32, it is possible to spray a plurality of types of medicines having different particle sizes and shapes by exchanging them with ones having different shapes, sizes, numbers and the like of the feeding blades 32b.

  As described above, in the small spray device 3 of the present embodiment, the feeding unit 30 is rotatably provided and is a mesa as a feeding amount adjusting member for adjusting the feeding amount of the medicine with respect to the impeller 22 according to the rotation speed. A shutter 32 and a feeding motor 33 as a feeding drive source for rotating the mesa shutter 32 are included. And the chemical | medical agent guide | induced to the center part of the impeller 22 of the dispersion | spreading part 20 from the delivery part 30 via the delivery path | route 34b, ie, the chemical | medical agent delivered | paid with respect to the dispersion | spreading part 20 from the delivery part 30, is in the dispersion | distribution part 20. As described above, the air blown by the rotation of the impeller 22 and the centrifugal force are used to be sprayed from the spray port 21.

  In the present embodiment, the medicinal shutter 32 is used as the feeding amount adjusting member as the medicine feeding method in the feeding unit 30, but the present invention is not limited to this. As a method for feeding out the medicine in the feeding portion 30, for example, a horizontal pan that has a communication portion formed as a plurality of notches, holes and the like and is arranged horizontally is used as a feeding amount adjusting member. A horizontal pan type in which the amount of medicine to be fed is adjusted according to the number of rotations of the roller, or a roll member that has a horizontal groove and is provided so as to be rotatable is used as the amount of feeding adjustment member. A lateral groove roll type in which the amount is adjusted, a shutter type in which the amount of medicine delivered is adjusted by opening and closing the shutter, and the like can be adopted.

  In the small sprayer 3, a battery 36 is provided. The battery 36 supplies power to the spreading motor 23 that constitutes the spreading unit 20 and the feeding motor 33 that constitutes the feeding unit 30. The battery 36 is provided in a state of being accommodated in the battery case 36a. The battery case 36 a is configured integrally with the spray unit housing 24 below the spray unit housing 24.

  Further, the small spraying device 3 is provided with an adjustment dial 37 for adjusting the spraying amount and spraying distance of the medicine. The small spray device 3 is configured such that the rotation speed (rotational speed) of the spray motor 23 and the feeding motor 33 is adjusted by operating the adjustment dial 37. That is, the rotation speeds of the spray motor 23 and the feed motor 33 can be adjusted stepwise or continuously by operating the adjustment dial 37, and according to the spraying amount and spraying distance of the medicine desired by the adjustment dial 37. The number of rotations is adjusted. As described above, the adjustment dial 37 is provided so as to protrude rightward in the right portion of the substantially cross shape of the feeding portion housing 34.

  In the small sprayer 3, a support frame 38 is provided. The support frame 38 is configured by bending an integral rod-shaped member. As shown in FIGS. 1 to 5, the support frame 38 is supported by the both ends of the support frame 38 at positions on the left and right outer sides of the feeding case portion 35, and the lower side of the spraying unit 20 (small spraying). (Lower side of the device 3) so as to be substantially V-shaped in rear view and substantially U-shaped in side view. The support frame 38 is supported and fixed in a state where both supported end portions penetrate the support stay 38a in the front-rear direction with respect to the support stay 38a that protrudes to the left and right sides outside the feeding case portion 35.

  In the small spray device 3, a guard plate 39 is provided. The guard plate 39 is a member having a substantially rectangular plate-shaped portion, and is disposed horizontally on the left and right sides of the medicine tank 31 so as to be positioned above the impeller case 25. The guard plate 39 regulates the spraying of the medicine discharged from the spraying port 21 in an unnecessary direction, and the medicine that restricts the spraying (the medicine that hits the guard plate 39 from below) is placed on the lower side (the operator's Has the function of dropping to the front).

  The guard plate 39 is supported by being fixed to the support plate portion 31c that protrudes to the left and right sides at the lower portion outside the drug tank 31. That is, the guard plate 39 has a support stay 39 a for supporting the drug tank 31 at one end of a substantially rectangular plate-shaped portion, and the support stay 39 a is a support plate portion 31 c of the drug tank 31. Is supported with respect to the medicine tank 31.

  Moreover, in the small spraying device 3 of this embodiment, the hook part 39b for the small spraying device 3 to be used as a front hanging system is provided in the end of the guard board 39. FIG. The hook portion 39b is a plate-like portion that protrudes rearward from the rear end portion of the guard plate 39, and a hole portion 39c through which a band or the like for hanging the small spraying device 3 to the operator's front side is hooked. Have In other words, the hook portions 39b formed on the guard plates 39 provided on the left and right sides of the medicine tank 31 are used, and the front-spreading small spraying device 3 is supported in a state of being hung on the front side of the operator by a band or the like. .

  The small spraying device 3 of the present embodiment having the above configuration is configured such that the spraying unit 20 can switch the spraying direction of the medicine discharged from the spraying port 21 to a plurality of directions. Hereinafter, the configuration for switching the spraying direction of the medicine discharged from the spraying port 21 in the small spraying device 3 (hereinafter referred to as “spraying direction switching configuration”) will be described together with the configuration of the spraying unit 20.

  In the spraying direction switching configuration, the spraying direction of the medicine discharged from the spraying port 21 is switched to a plurality of directions by the rotation of the impeller case 25 that houses the impeller 22.

  That is, the impeller case 25 is provided so as to be rotatable with the direction substantially the same as the rotation axis direction of the impeller 22 being the rotation axis direction. Specifically, the impeller case 25 is supported on the front end side of the spraying part housing 24 in a state of being rotatably fitted to the spraying part housing 24, so that the front-rear horizontal direction is the rotational axis direction. As shown in FIG. Further, the impeller case 25 communicates with a space portion that houses the impeller 22 and forms a spout 21 that is an opening through which a medicine energized by the rotation of the impeller 22 is discharged. That is, the spout 21 is formed at one end of the impeller case 25.

  Thus, in the small spray device 3 of the present embodiment, the impeller case 25 that houses the impeller 22 functions as a spray port forming member that forms the spray port 21. And the direction of the spout 21 changes as the impeller case 25 is rotated. A switching handle 41 is used to rotate the impeller case 25. The switching handle 41 is configured as a substantially cylindrical gripping portion that protrudes forward from the front surface of the impeller case 25. The switching handle 41 is provided integrally with the impeller case 25. That is, the impeller case 25 rotates integrally with the switching handle 41 by the rotation operation of the switching handle 41. Thus, by operating the switching handle 41, the impeller case 25 is rotated, and the direction of the spraying port 21, that is, the spraying direction is switched.

  The impeller case 25 of the present embodiment has the following shape. The impeller case 25 is configured as a substantially plate-like case body having a thickness (length in the rotation axis direction) that can accommodate the impeller 22. The impeller case 25 has a substantially U-shaped outer shape when viewed from the rotation axis direction of the impeller case 25 (front view and rear view, hereinafter simply referred to as “rotation axis direction view”). That is, as shown in FIG. 7, the impeller case 25 has an arcuate portion 25a along the rotational shape (circular shape) of the impeller 22 and a center thereof with respect to the arcuate portion 25a as viewed in the rotational axis direction. It has a substantially U-shaped outer shape composed of linear portions 25b that are substantially parallel to each other and extend in a substantially tangential direction from a position facing each other via a position (see reference C1). FIG. 7 is a view in the direction corresponding to the back view (see FIG. 2) of the small spray device 3.

  Specifically, when viewed in the direction of the rotational axis, the arc-shaped portion 25a forming a substantially U shape is a semicircular portion with respect to a circular shape centered on the position represented by the symbol C1. Similarly, the linear portion 25b that forms a substantially U-shape is a portion that extends in the tangential direction in the circular shape from positions corresponding to both ends of the arc-shaped portion 25a that is a semicircular portion. . That is, the linear portion 25b that forms a substantially U-shape when viewed in the direction of the rotational axis is a portion that forms surface portions that face each other in the impeller case 25 in a parallel state. Here, the center position C1 of the arcuate portion 25a forming a substantially U shape corresponds to the rotational axis position of the impeller 22 and the rotational axis position of the impeller case 25 that coincide with each other when viewed in the rotational axis direction. To do.

  And the impeller case 25 is represented by the linear part 25c which connects the sprinkling port 21 in the extending direction front-end | tip of the linear part 25b in the substantially U shape which is an external shape in the rotation axis direction view. It forms so that it may open with respect to the surface part. That is, in the impeller case 25, the linear portions 25b form surface portions that face each other in a parallel state as described above. With respect to the mutually facing surface portions, the surface portion formed between the tip portions in the extending direction from the arc-shaped portion 25a is substantially orthogonal to both the linear portions 25b in the rotational axis direction view. Represented as a straight portion 25c. The spout 21 serving as an opening facing the outside from the inner space of the impeller case 25 is opened on the surface portion represented by the linear portion 25c in the rotational axis direction view.

  Thus, the impeller case 25 having a substantially U-shaped outer shape when viewed in the direction of the rotation axis is substantially bilaterally symmetrical with respect to a change in posture due to the rotation. That is, as described above, it has a substantially U-shaped outer shape with the semicircular arc-shaped portion 25a and the linear portions 25b parallel to each other when viewed in the direction of the rotation axis, and the center position of the arc-shaped portion 25a. The impeller case 25 provided so as to be rotatable about C1 as a rotation center is a vertical line (refer to a reference C2) in a state where the spray port 21 faces upward (a state where the linear portion 25c is in the horizontal direction). Is substantially bilaterally symmetric (substantially line symmetric). Then, the impeller case 25 in each state rotated by the same angle in the opposite direction (in the left-right direction) with the state where the spraying port 21 faces upward as the center position is substantially left-right symmetric.

  In the spraying direction switching configuration of the present embodiment as described above, the spraying direction of the medicine discharged from the spraying port 21 is switched to the left and right sides by the rotation of the impeller case 25. That is, in this embodiment, the position of the spraying port 21 corresponding to each state in which the impeller case 25 is positioned on both left and right ends in the rotation range corresponds to each spraying direction on both the left and right sides. In other words, in this embodiment, the spray direction of the medicine is the spray port 21 in a state where the impeller case 25 is located on the right end side in the rotation range (the state shown in FIG. 7, hereinafter referred to as “right spray state”). And the spraying direction from the spraying port 21 in a state where the impeller case 25 is located on the left end side in the rotation range (see FIG. 7, two-dot chain line 25x, hereinafter referred to as “left spraying state”) (See arrow B).

  In other words, in the present embodiment, either the left direction or the right direction due to the rotation of the impeller case 25 is used as the medicine spraying direction. Here, the rotation range of the impeller case 25 is set so that the impeller case 25 in each state of the right spraying state and the left spraying state is substantially symmetrical as described above. In other words, the range of rotation of the impeller case 25 is such that the impeller case 25 rotates in the opposite direction (in the left-right direction) by the same angle with the state where the spray port 21 faces upward as the center position. Set as a range.

  In each state of the right spraying state and the left spraying state of the impeller case 25, the impeller case 25 has a posture such that the spray port 21 faces obliquely upward. Each state of the right spraying state and the left spraying state of the impeller case 25 is held by the impeller case 25 being locked at a predetermined position by a stopper or the like (not shown). Such switching of the spraying direction of the medicine, that is, switching between the right spraying state and the left spraying state by the rotation of the impeller case 25 is performed manually by using the switching handle 41 described above.

  With such switching of the spraying direction, the rotation direction of the impeller 22 (rotation direction of the spraying motor 23) is also switched. That is, the spraying of the medicine toward the right side of the machine body in the right spraying state of the impeller case 25 (hereinafter referred to as “right spraying”) and the spraying of the drug toward the left side of the body of the impeller case 25 in the left spraying state ( Hereinafter, the rotation directions of the impeller 22 are different from each other. Specifically, in the case of rightward spraying, the impeller 22 rotates in the clockwise direction (rightward rotation direction) in the rear view shown in FIG. 7 (see arrow D1). On the contrary, in the case of leftward spreading (see the two-dot chain line 25x), the impeller 22 rotates counterclockwise (left rotation direction) in the rear view shown in FIG. 7 (see arrow D2).

  In the spraying direction switching configuration of the present embodiment, the spraying direction of the medicine is two directions of the right spraying direction and the left spraying direction, but is limited to this as long as the configuration can be switched to a plurality of directions. Is not to be done. That is, as a configuration in which the spraying direction is switched to a plurality of directions, for example, a configuration in which the impeller case 25 is locked in a plurality of locations on both the left and right sides in the rotation range may be employed. . Similarly, the configuration in which the spraying direction can be switched to a plurality of directions is a configuration in which the impeller case 25 is locked at an arbitrary position in the continuous rotation, and the spraying direction is the rotation range of the impeller case 25. The structure which can be switched to the direction corresponding to the arbitrary positions in may be employ | adopted. That is, switching the spraying direction to a plurality of directions includes a continuous change in the spraying direction due to a continuous change in the rotational position of the impeller case 25.

  As described above, in the spraying direction switching configuration of the present embodiment, as the spraying direction of the medicine switched by the rotation of the impeller case 25, the spraying direction by the right spraying in which the impeller case 25 is in the right spraying state, and the impeller case 25 The left spraying direction in which the left spraying state is obtained is used. That is, in the spraying direction switching configuration of the present embodiment, with respect to the rotation position of the impeller case 25, both rotation direction sides that are opposite to each other with the rotation position in which the spray port 21 faces vertically upward as a predetermined direction being the center position. A predetermined rotation position (on the left and right rotation direction sides) is set as a spraying position at which the medicine is sprayed from the spraying port 21.

  As described above, in the present embodiment, with respect to the rotation position of the impeller case 25, the position where the impeller case 25 is in the right spraying state (hereinafter referred to as “right spray position”) and the impeller case 25 as the spray position of the medicine. In the configuration in which the position in which the left spraying state is set (hereinafter referred to as “left spraying position”) is the spraying position, a detection unit that detects that the rotation position of the impeller case 25 is the spraying position is provided. In the spraying direction switching configuration of the present embodiment, a limit switch 42 is provided as the detection means.

  In this embodiment, as the limit switch 42 for detecting the spray position of the medicine, a limit switch 42 for detecting the right spray position for the impeller case 25 (hereinafter referred to as “right limit switch 42R”), and the impeller case 25. And a limit switch 42 (hereinafter referred to as “left limit switch 42L”) for detecting the left spray position.

  As shown in FIG. 7, the limit switch 42 is a so-called hinge-type limit switch, and includes a lever 42a that moves under the action of another member or the like, and a push button 42b that is pushed by the movement of the lever 42a. Have. In the limit switch 42, the state where the push button 42b is pressed by the lever 42a is turned on, that is, the energized state, and the state where the push button 42b is not pushed by the lever 42a is turned off, that is, the non-energized state. Become.

  Such a limit switch 42 is used, and in the small spraying device 3, a spraying state in which the medicine is sprayed from the spraying port 21 and a non-spraying state in which the spraying of the medicine from the spraying port 21 is stopped are switched. . When the impeller case 25 is not in any of the left and right spraying positions, the small spraying apparatus 3 is in the non-spraying state, and only when the impeller case 25 is in either of the left and right spraying positions, the small spraying apparatus 3 is used. Is in a sprayed state.

  That is, in the small spraying device 3 of the present embodiment, when the rotation position of the impeller case 25 is not detected by the limit switch 42 as the spraying position (right spraying position or left spraying position), the impeller 22 and the mecha The rotation of at least one of the zara shutters 32 is configured to stop.

  Specifically, the limit switch 42 is provided on the rear side (back side) of the impeller case 25 and inside the spray unit housing 24. The limit switch 42 is provided in a state of being fixed to a support plate 43 provided on the rear side of the impeller case 25. As shown in FIGS. 6 and 7, the support plate 43 is a disk-shaped member, and is fixed to the front end surface portion of the spraying portion housing 24 in which the feeding passage 34 b opens to the front side. That is, the support plate 43 is provided between the spraying part housing 24 and the impeller case 25 and is fixed to the spraying part housing 24 side. The impeller case 25 is rotatably supported in a state where the impeller case 25 is fitted to the spreader housing 24 via the support plate 43. Therefore, the support plate 43, which is a disk-shaped member, is provided in a state where the center position thereof coincides with the position of the rotation axis center of the impeller 22 or the like (see FIG. 7, center position C1) when viewed in the rotation axis direction. .

  The limit switch 42 is attached to the back surface 43a which is the rear plate surface of the support plate 43 provided in this way. The limit switch 42 is fixed to the back surface 43a of the support plate 43 using an appropriate method such as screwing. In the present embodiment, as shown in FIG. 7, the left and right limit switches 42L and 42R are located below the center position C1 so that the lever 42a faces the outer peripheral side of the circular shape of the support plate 43 and the periphery of the impeller case 25 It is provided substantially symmetrically in such a posture as to be located at the portion (near the arcuate portion 25a).

  In this way, the limit switch 42 is fixed to the support plate 43 provided in a state of being fixed to the spray unit housing 24 that rotatably supports the impeller case 25, so that the impeller case 25 can be rotated. As a result, it moves relative to the impeller case 25. In addition, the support plate 43 to which the limit switch 42 is fixed is provided with a through hole 43b for allowing the extension passage 34b to communicate with the internal space of the impeller case 25.

  The limit switch 42 detects the spray position with respect to the rotation position of the impeller case 25 from the position of the detected part provided in the impeller case 25. That is, the detected portion with respect to the limit switch 42 is provided so as to move as the impeller case 25 rotates. The limit switch 42 detects that the impeller case 25 is at the spraying position by detecting that the detected portion has reached a predetermined position due to the rotation of the impeller case 25.

  Specifically, as shown in FIG. 7, in the spraying direction switching configuration of the present embodiment, an action projection 44 is provided as a detected portion for the limit switch 42. The action protrusion 44 is a protrusion that is integrally formed with the impeller case 25 at the back surface 25 d that is the rear surface of the impeller case 25. That is, the action projection 44 moves integrally with the impeller case 25 as the impeller case 25 rotates. The action protrusion 44 acts on the limit switch 42 by moving with the rotation of the impeller case 25. In this embodiment, as the action protrusion 44, an action protrusion 44 (hereinafter referred to as “right action protrusion 44R”) acting on the right limit switch 42R and an action protrusion 44 (hereinafter referred to as “left action protrusion” acting on the left limit switch 42L). 44L ").

  The action protrusion 44 has an action surface 44 a that is a surface that contacts the lever 42 a when acting on the limit switch 42. That is, the action protrusion 44 is a part that forms an action surface 44 a that acts on the limit switch 42 in the impeller case 25. In the present embodiment, as shown in FIG. 7, the action protrusion 44 is provided on the outer side (outer peripheral side) in the radial direction in the circular shape centering on the center position C <b> 1 than the limit switch 42, and the lever 42 a is on the outer peripheral side. With respect to the limit switch 42 provided so as to face, the action surface 44a is provided so as to face inward in the radial direction. Thereby, the action protrusion 44 acts on the limit switch 42 from the outside in the radial direction. Further, as described above, the left and right action protrusions 44L and 44R are substantially left-right symmetric with respect to the change in posture of the impeller case 25 due to its rotation, and the left and right limit switches 42L and 42R are provided substantially left-right symmetric. Are provided substantially symmetrically.

  In such a configuration, the action protrusion 44 acts on the limit switch 42 as follows. That is, when the impeller case 25 is rotated until it reaches the spraying position (right spraying position or left spraying position), the lever 42a is pressed by the working surface 44a of the working projection 44, and the limit switch 42 is turned on. It becomes the state of. Specifically, when the impeller case 25 is rotated toward the spraying position, the working surface 44a contacts the lever 42a. The direction in which the lever 42a presses the push button 42b through the action surface 44a due to the movement of the action protrusion 44 when the impeller case 25 is further rotated to the spraying position side from the state in which the action surface 44a is in contact with the lever 42a. Moved to. Finally, when the impeller case 25 reaches the spraying position, the push button 42b is pressed by the lever 42a pressed by the action protrusion 44 via the action surface 44a, and the limit switch 42 is turned on. It becomes a state.

  As described above, the action protrusion 44 is in a state in which the push button 42b is pressed by the lever 42a through the action surface 44a by the movement of the impeller case 25, that is, the limit switch 42 is turned on. Then, the lever 42a is moved. Then, the rotation position of the impeller case 25 where the limit switch 42 is turned on corresponds to the spray position (right spray position or left spray position). That is, when the impeller case 25 is in the right spraying position, the right limit switch 42R is turned on by the action of the right action protrusion 44R, and when the impeller case 25 is in the left spraying position, the action of the left action protrusion 44L is activated. Thus, the left limit switch 42L is turned on. FIG. 7 shows a state in which the impeller case 25 is in the right spray position, where the right limit switch 42R is on and the left limit switch 42L is off.

  Therefore, the positions and postures provided for the left and right limit switches 42L and 42R, and the positions and shapes provided for the left and right operation protrusions 44L and 44R (the shape of the action surface 44a) are defined as the rotation range of the impeller case 25 and the like. Therefore, the rotation position of the impeller case 25 where the limit switch 42 is turned on is appropriately set so as to correspond to the spray position (right spray position or left spray position). In other words, if the limit switch 42 is turned on only when the impeller case 25 is in the spray position, the position where the limit switch 42 is provided, the shape of the action projection 44, etc. It is not limited.

  With such a configuration, in a state where the rotation position of the impeller case 25 is not detected by the limit switch 42 as the spraying position, that is, in a state where the limit switch 42 is off, the small spraying device 3 is in the non-spraying state. It is said. The non-spreading state of the small spraying device 3 is realized by stopping the rotation of at least one of the impeller 22 and the mezzanine shutter 32.

  That is, in the state where the rotation of the impeller 22 is stopped, since the blowing and centrifugal force due to the rotation of the impeller 22 cannot be obtained, the medicine is not discharged from the spraying port 21, and the small spraying device 3 is in a non-spraying state. . In addition, in the state where the rotation of the mezzara shutter 32 is stopped, the medicine is not sent out to the delivery passage 34b by the rotation of the mesa shutter 32, so that the delivery of the medicine to the impeller 22 is stopped and the small spraying device 3 is Non-sprayed state. Further, also when the rotation of both the impeller 22 and the mezzara shutter 32 is stopped, the small spraying device 3 is brought into a non-spraying state by the above-described actions.

  Stopping the rotation of the impeller 22 corresponds to stopping the rotational drive of the spray motor 23, and stopping the rotation of the mezzanine shutter 32 corresponds to stopping the rotational drive of the feeding motor 33. Therefore, when the rotation position of the impeller case 25 is not in the spraying position and the limit switch 42 is OFF, the left and right limit switches 42L and 42L are set so that the rotational drive of at least one of the spraying motor 23 and the feeding motor 33 stops. An electric circuit is formed between 42R and the spreading motor 23, and between the left and right limit switches 42L and 42R and the feeding motor 33.

  Further, in the spraying direction switching configuration of the present embodiment, switching of the rotation direction of the impeller 22 (rotation direction of the spraying motor 23) accompanying the switching of the spraying direction as described above is performed by turning the left and right limit switches 42L and 42R on / off. Performed in conjunction with off. That is, when the impeller case 25 is in the right spraying position and the right limit switch 42R is on, the rotation direction of the impeller 22 is clockwise, the impeller case 25 is in the left spraying position, and the left limit switch 42L is In the on state, an electric circuit between the left and right limit switches 42L and 42R and the spray motor 23 is configured so that the rotation direction of the impeller 22 is counterclockwise. In other words, the right limit switch 42R is turned on to rotate the impeller 22 in the right rotation direction, and the left limit switch 42L is turned on to rotate the impeller 22 to the left.

  The effect | action in the spraying direction switching structure of this embodiment as mentioned above is demonstrated using FIG. FIG. 8A shows a right-side spraying state in which the rotation position of the impeller case 25 is at the right spraying position. In such a state, only the right limit switch 42R is turned on by the right action projection 44R, and the impeller 22 rotates to the right (see arrow E1). And the chemical | medical agent supplied with respect to the impeller 22 is discharged from the spraying port 21 which turns rightward upwards with the ventilation and centrifugal force by the impeller 22 which rotates right (refer arrow F1).

  FIG. 8B shows an example of a state in which the rotation position of the impeller case 25 is not in either the right spray position or the left spray position. In such a state, both the right limit switch 42R and the left limit switch 42L are turned off, and the rotation of at least one of the impeller 22 and the mezzara shutter 32 is stopped. That is, the small spraying device 3 is in a non-spraying state.

  FIG. 8C shows a left-side spraying state in which the rotation position of the impeller case 25 is at the left spraying position. In such a state, only the left limit switch 42L is turned on by the left operation protrusion 44L, and the impeller 22 rotates counterclockwise (see arrow E2). And the chemical | medical agent supplied with respect to the impeller 22 is discharged from the spraying port 21 which faces the left diagonal upper direction with the ventilation and centrifugal force by the impeller 22 which rotates counterclockwise (refer arrow F2).

  As described above, in the small spray device 3 of the present embodiment, the left and right limit switches 42L and 42R detect that the rotational position of the impeller case 25 is the spray position, and the rotational position of the impeller case 25 is Only when it is detected that it is the spraying position, it functions as a permitting means that allows the impeller 22 and the mezzanine shutter 32 to rotate.

  That is, in a state where the left and right limit switches 42L and 42R do not detect that the rotation position of the impeller case 25 is at the left spraying position or the right spraying position, that is, when both the left and right limit switches 42L and 42R are off, At least one of the impeller 22 and the mesa shutter 32 stops rotating. The right limit switch 42R detects that the rotation position of the impeller case 25 is at the left spraying position or the right spraying position, that is, the left limit switch 42L or the right limit switch 42R is turned on. The rotation of the impeller 22 and the mesa shutter 32 is allowed.

  According to the above-described spraying direction switching configuration, it is possible to prevent the spraying of medicines in unnecessary directions and to sufficiently ensure the safety for the operator. That is, in a state where the impeller case 25 is in a rotation position other than the right spraying position and the left spraying position in the rotation range, the small spraying device 3 is in a non-spraying state. The spraying of medicines against is prevented. Similarly, when the impeller case 25 is in a rotational position other than the right spraying position and the left spraying position, the small spraying device 3 is in a non-spraying state, so that the medicine discharged from the spraying port 21 facing upward is directly Therefore, it is possible to avoid the phenomenon of hitting the worker indirectly by hitting or hitting other parts, and sufficient safety can be ensured.

  In the present embodiment, the limit switch 42 is used as a means for detecting the state where the impeller case 25 is at the spraying position and allowing the impeller 22 and the mezzanine shutter 32 to rotate. It is not limited. That is, instead of the limit switch 42, a micro switch other than the limit switch 42, various switches such as a photoelectric switch and a proximity switch, or various sensors such as a position sensor and a proximity sensor may be used. Further, the mounting position of the limit switch 42 or the action protrusion 44 can be changed in the circumferential direction around the center position C1, and the spraying angle of the medicine can be changed. However, in this case, the position of a stopper or the like for setting the rotation stop position of the impeller case 25 can also be changed, and the optimum spraying operation according to the farm field can be performed.

  According to the small spray device 3 of the present embodiment having the spray direction switching configuration as described above, the structure can be simplified and simplified, and the cost can be reduced. That is, the small spraying device 3 of the present embodiment has one spraying port 21, and the spraying direction of the medicine from the spraying port 21 is switched in both the left and right directions by the rotation of the impeller case 25 that houses the impeller 22. It has become. As a result, the structure is simplified and the cost is easily reduced in comparison with a configuration having a spraying port on both the left and right sides of the machine body and a mechanism for switching the discharge path of the sprayed material to the left and right spraying ports. be able to.

  Then, the control structure in the small spraying apparatus 3 of this embodiment is demonstrated using FIG. The small spray device 3 includes a control unit 50. The control unit 50 controls the operation of each unit in the small spray device 3. The control unit 50 includes a storage unit that stores programs and the like, an expansion unit that expands programs, a calculation unit that performs predetermined calculations according to the programs, and a storage unit that stores calculation results and the like by the calculation units. Specifically, as the control unit 50, a configuration in which a CPU, a ROM, a RAM, an HDD, or the like are connected by a bus, or a configuration that includes a one-chip LSI or the like is used. The control unit 50 is mounted in a predetermined place in the small spray device 3, for example, in the feeding unit housing 34 or the like.

  A spray motor 23 and a feeding motor 33 are connected to the control unit 50. The control unit 50 controls the rotation speed and rotation direction of these motors. The control unit 50 includes a medicine type setting unit 51 for inputting the type of medicine to be sprayed, a spraying distance setting unit 52 for setting the spraying distance (flying distance) of the medicine, and a feeding unit 30. A feed amount setting unit 53 for setting the feed amount is connected. These various setting devices are provided in an appropriate place on the outside of the feeding portion housing 34 in the small spray device 3, for example.

  Based on the output signal corresponding to the type of medicine set in the medicine type setting device 51 and the output signal corresponding to the amount of medicine delivered set in the delivery amount setting device 53, the control unit 50 applies the amount of medicine spread. That is, the number of rotations of the feeding motor 33 that rotates the mesa shutter 32 for adjusting the amount of medicine to be fed from the feeding unit 30 is calculated. Further, the control unit 50 calculates the rotation speed of the impeller 22, that is, the rotation speed of the spraying motor 23, based on the output signal corresponding to the spraying distance of the medicine set in the spraying distance setting unit 52.

  A battery 36 is connected to the control unit 50. The control unit 50 includes a current / voltage measurement unit 50a. The current / voltage measuring unit 50a measures at least one of a current and a voltage supplied to each of the spreading motor 23 and the feeding motor 33. Further, various switches and the like provided in the small spray device 3 are connected to the control unit 50.

  In the small spraying device 3 having the above-described control configuration, the control unit 50 controls the amount of medicine delivered in the feeding unit 30 based on the relationship with the rotational speed of the impeller 22 in the spraying unit 20 (hereinafter referred to as “rotational speed”). Control ”).

  In the rotation speed control, at the start of rotation of the spray motor 23 for rotating the impeller 22, the rotation speed of the impeller 22 reaches a predetermined rotation speed set in advance (hereinafter referred to as “set rotation speed”). The rotation of the mezzara shutter 32 is stopped. When the rotation speed of the impeller 22 reaches the set rotation speed, the feeding motor 33 for rotating the mezzara shutter 32 is controlled so that the amount of medicine delivered in the feeding section 30 becomes a predetermined amount. . Here, the predetermined amount of the medicine supply amount is set as, for example, a spraying amount used in a normal operation state in the small spraying device 3.

  In the rotational speed control, the rotational speed of the impeller 22 is detected based on a measured value of at least one of the current and voltage supplied to the spray motor 23. That is, the spray motor 23 is configured as an electric motor that is driven by the power supplied from the battery 36. For this reason, the rotation speed of the spray motor 23, that is, the rotation speed of the impeller 22 can be calculated and grasped from the current and voltage supplied from the battery 36 to the spray motor 23.

  In addition, the amount of medicine delivered in the delivery unit 30 is detected based on the measured value of at least one of the current and voltage supplied to the delivery motor 33, as with the rotation speed of the impeller 22. That is, the feeding motor 33 is configured as an electric motor that is driven by the electric power supplied from the battery 36, similarly to the spraying motor 23. For this reason, from the current and voltage supplied from the battery 36 to the feeding motor 33, the number of rotations of the feeding motor 33, that is, the amount of medicine delivered in the feeding unit 30 due to the rotation of the mesa shutter 32 can be calculated and grasped.

  As described above, the current and voltage values supplied from the battery 36 to the spreading motor 23 and the feeding motor 33 are measured by the current / voltage measuring unit 50a of the control unit 50 as described above.

  As described above, the control unit 50 detects the rotational speed of the impeller 22 from the measured value of at least one of the current and voltage supplied to the spraying motor 23, which is measured by the current / voltage measuring unit 50a. Based on the number of rotations, the delivery motor 33 is controlled to control the delivery amount of the medicine. The amount of medicine to be fed is controlled by controlling the feeding motor 33 based on the measured value of at least one of the current and voltage supplied to the feeding motor 33 measured by the current / voltage measuring unit 50a. Is called.

  Therefore, in the control unit 50, the following correspondence is set and stored in advance as a map, a table, or the like in the storage unit or the like. That is, as such a correspondence relationship, there is a correspondence relationship between a measured value of at least one of the current and voltage supplied to the spraying motor 23 and the rotation speed of the impeller 22 (the rotation speed of the spraying motor 23), and the feeding motor 33. A correspondence relationship between the measured value of at least one of the supplied current and voltage and the amount of medicine delivered in the delivery unit 30 (the number of revolutions of the delivery motor 33) can be given.

  In addition, the predetermined number of rotations of the impeller 22 used for the rotation number control and the delivery of the medicine in the feeding unit 30 that is set to a predetermined amount when the number of rotations of the impeller 22 reaches the set number of rotations in the rotation number control. The amount of change (change rate) of the amount is also set and stored in advance in the storage unit or the like in the control unit 50. Here, the set rotation speed for the impeller 22 is set as a rotation speed at which a sufficient spraying distance is obtained for the medicine sprayed by the rotation of the impeller 22.

  The specific control contents of the rotational speed control are as follows. That is, when the spraying operation by the small spraying device 3 is started, the rotation speed of the impeller 22 is detected from the measured value of at least one of the current and voltage supplied to the spraying motor 23 when the spraying motor 23 starts to rotate. The delivery motor 33 is controlled so that the medicine is not delivered from the delivery unit 30 until the rotational speed of the impeller 22 detected here reaches the set rotational speed.

  That is, in a state where the detected rotation speed of the impeller 22 is smaller than the set rotation speed, the feeding motor 33 is controlled to be stopped so that the mesa shutter 32 for adjusting the feeding amount does not rotate. Thereby, in the low-speed rotation state of the spraying motor 23 at the start of the spraying work, a stopped state of the medicine feeding is ensured, and spraying unevenness that occurs when the medicine is not blown over a predetermined distance is prevented. Then, when the rotation speed of the impeller 22 reaches the set rotation speed, spraying (feeding) is started, and the rotation speed of the mezzara shutter 32 is gradually increased so that the set amount of medicine is sprayed in a predetermined range. In addition, the rotation speed of the feeding motor 33 is adjusted.

  By performing such rotation speed control, when the spraying operation by the small spraying device 3 is started, spraying unevenness does not occur in a field or the like where the drug is sprayed, and uniform drug spraying becomes possible. In other words, the amount of spraying per unit area can be made uniform in a field or the like where the medicine is sprayed.

  That is, when the spraying operation by the small spraying device 3 is started, if the driving of the spraying motor 23 in the spraying unit 20 and the driving of the feeding motor 33 in the feeding unit 30 are started at the same time, the spraying motor 23 and the feeding started simultaneously. The electric power supplied from the battery 36 to the motor 33 may be temporarily insufficient. In such a case, the number of rotations of the spray motor 23 or the feeding motor 33 is insufficient, a sufficient number of rotations cannot be obtained for the impeller 22 or the mezzanine shutter 32, the amount of sprayed medicine is insufficient, and scattering unevenness occurs in a field or the like. There is a time.

  Therefore, the control (rotational speed control) of the feeding motor 33 based on the rotational speed of the impeller 22 as described above is performed, so that the driving state of the spraying motor 23 is unstable at the start of the spraying work. In the situation, the delivery of the medicine in the delivery part 30 is stopped, and when the spraying motor 23 reaches the set rotation speed, the delivery amount of the medicine gradually increases from that and is adjusted to a predetermined amount. Thus, the area where unevenness of dispersion occurs can be reduced.

  According to the control configuration included in the small spraying device 3 as described above, the structure of the small spraying device 3 can be simplified and simplified, and the cost can be reduced and the maintainability and functional reliability can be improved. be able to. The fact that such an effect can be obtained will be specifically described.

  For example, the following configuration is conceivable for the purpose of uniforming the amount of spraying per unit area even when the spraying output is not stable, such as when starting the spraying operation. That is, in the power spreader, a configuration is provided that includes means for detecting the amount of the sprinkled material delivered from the tank constituting the feed section and means for detecting the rotational speed of the rotating body (impeller, etc.) constituting the spreader. is there. In such a configuration, each means is connected to the control unit, and at the start of the spraying operation, until the rotation number of the rotating body rises to a predetermined rotation number, the feeding of the sprayed material in the feeding unit is stopped or the feeding amount is reduced. Minimized.

  Certainly, according to the above configuration, it is considered that the amount of spraying per unit area can be made uniform even at the time of starting the spraying operation where the output of spraying is not stable. However, in the feeding unit, means for detecting the amount of the sprinkled material is required, and in the spreading unit, means for detecting the number of rotations of the rotating body is required. For this reason, the structure of the power distribution device becomes complicated, and it is difficult to reduce costs and to ensure sufficient maintainability and functional reliability.

  In this regard, in the control configuration provided in the small spraying device 3, the rotational speed of the impeller 22, the amount of medicine delivered in the feeding unit 30, and the like are measured by measuring the current supplied to the spraying motor 23 and the feeding motor 33. Detected. For this reason, for example, a means for detecting the rotation speed of the impeller 22 configured by using a sensor or the like, a means for detecting the delivery amount of the medicine in the delivery portion 30, and the like are not required. As a result, the structure of the small sprayer 3 can be simplified and simplified, and the cost can be reduced. In addition, since the detection means configured by using a sensor or the like is omitted, adjustment work for the sensor or the like is not required, and maintenance performance and functional reliability can be improved.

  Although the small dispersion device 3 which concerns on this embodiment demonstrated above makes a dispersion | spreading thing to be used as a granular chemical | medical agent, it is not limited to this. In other words, the sprayed material sprayed by the small spraying device 3 may be fertilizer or the like in addition to the drug. Moreover, although the small spraying apparatus 3 which concerns on this embodiment is used as a front-end | hanging system which will be in the state held by the operator, it may be used in the state mounted in the mobile trolley | bogie which has a running wheel etc. .

3 Small spraying device 20 Spraying unit 21 Spraying port 22 Impeller (spraying rotating body)
23 Spraying motor (rotary drive source)
25 Impeller case (case member)
30 Feeding section 31 Drug tank (storage part)
32 Mezzara shutter (Feeding rotating body)
33 Feeding motor (feeding drive source)
36 Battery 42 Limit switch (detection means, allowance means)
50 Control unit 50a Current voltage measurement unit

Claims (4)

A small-sized spraying apparatus that includes a spraying rotator that is rotatably provided and sprays sprayed material by rotation thereof, and a case member that accommodates the spraying rotating body, and sprays the sprayed material using the rotation of the spraying rotating body. And
The case member is provided so as to be rotatable about a rotation axis direction that is substantially the same as the rotation axis direction of the spreading rotator, communicates with a space portion that houses the spreading rotator, and rotates by the rotation of the spreading rotator. Forming the spout, which is the opening through which the energized spatter is discharged,
By the rotation of the case member, the spraying direction of the sprayed material discharged from the spraying port is switched to a plurality of directions ,
The small spraying device is provided with a feeding rotary body that is rotatably provided and feeds the sprayed material stored in a predetermined storage portion by rotation thereof toward the spraying rotary body,
With respect to the rotation position of the case member, a predetermined rotation position on both sides of the rotation direction opposite to each other with a rotation position where the spray port faces a predetermined direction as a center position is set to The spraying position where spraying is performed,
A detection means for detecting that the rotation position of the case member is the spray position;
In a state where the rotation position of the case member is not detected by the detection means as the spraying position, the rotation of at least one of the spraying rotating body and the feeding rotating body is stopped. A small spraying device characterized by that.
A small-sized spraying apparatus that includes a spraying rotator that is rotatably provided and sprays sprayed material by rotation thereof, and a case member that accommodates the spraying rotating body, and sprays the sprayed material using the rotation of the spraying rotating body. And
The case member is provided so as to be rotatable about a rotation axis direction that is substantially the same as the rotation axis direction of the spreading rotator, communicates with a space portion that houses the spreading rotator, and rotates by the rotation of the spreading rotator. Forming the spout, which is the opening through which the energized spatter is discharged,
By the rotation of the case member, the spraying direction of the sprayed material discharged from the spraying port is switched to a plurality of directions,
The small spraying device is provided with a feeding rotary body that is rotatably provided and feeds the sprayed material stored in a predetermined storage portion by rotation thereof toward the spraying rotary body,
With respect to the rotation position of the case member, a predetermined rotation position on both sides of the rotation direction opposite to each other with a rotation position where the spray port faces a predetermined direction as a center position is set to The spraying position where spraying is performed,
Only when it is detected that the rotation position of the case member is the spraying position and the rotation position of the case member is the spraying position, the spraying rotary body and the feeding rotary body are A small-sized spraying device comprising an allowance means for allowing rotation . A small-sized spraying apparatus that includes a spraying rotator that is rotatably provided and sprays sprayed material by rotation thereof, and a case member that accommodates the spraying rotating body, and sprays the sprayed material using the rotation of the spraying rotating body. And
The case member is provided so as to be rotatable about a rotation axis direction that is substantially the same as the rotation axis direction of the spreading rotator, communicates with a space portion that houses the spreading rotator, and rotates by the rotation of the spreading rotator. Forming the spout, which is the opening through which the energized spatter is discharged,
By the rotation of the case member, the spraying direction of the sprayed material discharged from the spraying port is switched to a plurality of directions,
The case member is substantially an arc-shaped portion that follows the rotational shape of the scattering rotator and a position that faces the arc-shaped portion through its center position when viewed from the rotation axis direction of the case member. It has a substantially U-shaped outer shape composed of linear portions extending in parallel to each other in the tangential direction, and the spray port is a linear portion that connects the extending ends of the linear portions. A small spraying device characterized by being formed so as to open with respect to the surface portion represented . A small-sized spraying apparatus that includes a spraying rotator that is rotatably provided and sprays sprayed material by rotation thereof, and a case member that accommodates the spraying rotating body, and sprays the sprayed material using the rotation of the spraying rotating body. And
The case member is provided so as to be rotatable about a rotation axis direction that is substantially the same as the rotation axis direction of the spreading rotator, communicates with a space portion that houses the spreading rotator, and rotates by the rotation of the spreading rotator. Forming the spout, which is the opening through which the energized spatter is discharged,
By the rotation of the case member, the spraying direction of the sprayed material discharged from the spraying port is switched to a plurality of directions,
The small spraying device has a feeding unit that feeds the sprayed material toward the spraying rotator,
The feeding unit includes a feeding rotary body that is rotatably provided and adjusts a feeding amount of the sprayed material with respect to the spreading rotary body according to the number of rotations thereof, and a feeding drive source for rotating the feeding rotary body,
The rotational drive source and the payout drive source are each configured by an electric motor,
When the rotation of the rotation drive source starts rotating, the rotation speed of the scattering rotating body detected based on the measured value of at least one of the current and voltage supplied to the rotation drive source is a predetermined rotation speed set in advance. Until the rotation speed of the spraying rotator is detected based on the measured value, the rotation speed of the spraying rotator reaches the predetermined rotation speed. The small-scale spraying is characterized in that the feeding drive source is controlled so that the amount of sprayed material in the feeding unit detected based on a measured value of at least one of current and voltage becomes a predetermined amount. apparatus.

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