JP7029942B2 - Granular material supply device - Google Patents

Description

The present invention relates to a powder or granular material supply device, and particularly to a powder or granular material supply device suitable for quantitatively supplying powder or granular material.

A powder or granular material supply device, which is also called a so-called feeder, for supplying a fixed amount of powder or granular material is already widely known. As shown in FIGS. 18 to 20, as this type of powder / granular material supply device, the powder / granular material has a hopper 1 into which the powder / granular material is charged, a screw 2b rotating in the screw casing 2e, and a discharge cylinder 2c. A discharge section 2 for discharging the body, a chute 3 for guiding the powder or granular material descending from the hopper 1 to the discharge section 2, and a shaft portion 4a protruding diagonally upward from the lower part inside the chute 3. Patent Document 1 discloses a powder or granular material supply device 100 including a stirring unit 4 in which a stirring member 4b rotates as a center and a measuring unit 5.

In this powder or granular material supply device 100, since the stirring member 4b rotates about the shaft portion 4a protruding diagonally upward from the lower part inside the chute 3, the stirring member 4b of the stirring unit 4 causes the stirring member 4b to rotate. , The granules are moved and agitated in various directions, that is, in the vertical direction and the circumferential direction. As a result, the powder or granular material inside the chute 3 or the hopper 1 is satisfactorily agitated, and the generation of bridges and rat holes can be prevented. Further, since the trajectory in which the stirring unit 4 rotates can be arranged along the discharging unit 2, it is possible to satisfactorily stabilize the filling rate of the powder or granular material in the discharging unit 2.

The chute 3 of the powder or granular material supply device 100 is formed with an inclined surface 3a that is inclined so that the inner surface side thereof faces diagonally upward, and the shaft portion 4a of the stirring portion 4 projects from the inclined surface 3a. Further, the chute 3 is connected to a conical wall portion 3b that extends in a conical shape from the outer periphery of the inclined surface 3a, and the conical wall portion 3b and the hopper 1 are connected to each other, and the powder or granular material in the hopper 1 is transferred to the conical wall of the chute 3. A side wall portion 3c that guides the portion 3b side is also formed. By forming the inclined surface 3a, the conical wall portion 3b, and the side wall portion 3c on the chute 3 in this way, the powder or granular material in the hopper 1 can be satisfactorily guided to the discharge portion 2 side through the chute 3. ..

As shown in FIGS. 19 and 20, in this powder or granular material supply device 100, one electric motor 7 is arranged at a position diagonally rearward of the chute 3, and a worm gear is provided at the tip of the drive shaft of the motor 7. 7a is attached. Further, the shaft portion 4a of the stirring portion 4 protrudes diagonally downward from the outer surface of the inclined surface 3a of the chute 3, and the stirring portion gear 4c is attached to the end of the protruding portion downward. Further, the rear end of the shaft portion of the screw 2b protrudes rearward from the rear end portion of the screw casing 2e, and the discharge gear 2d is attached to this protruding portion. Then, the stirring portion gear 4c and the discharging gear 2d are meshed with the worm gear 7a attached to the tip of the drive shaft of the motor 7. As a result, by driving the motor 7, the stirring member 4b of the stirring unit 4 and the screw 2b of the discharging unit 2 are rotated via the stirring unit gear 4c, the discharging gear 2d, and the like. .. That is, in this embodiment, the driving force of one motor 7 is stirred by the screw 2b and the stirring portion 4 by the worm gear 7a attached to the motor 7, the stirring portion gear 4c that meshes with the worm gear 7a, and the discharging gear 2d. A driving force transmission mechanism for transmitting to the member 4b is configured. Then, the screw 2b and the stirring unit 4 of the discharging unit 2 are driven via this driving force transmission mechanism.

Japanese Unexamined Patent Publication No. 2013-139333

However, in the above-mentioned powder or granular material supply device 100, as shown in FIGS. 19 and 20, the worm gear 7a attached to the motor 7 is used for the stirring unit 4b to which the stirring member 4b and the shaft portion 4a of the stirring unit 4 are connected. Since the structure is such that the gear 4c and the discharge gear 2d to which the screw 2b of the discharge unit 2 is connected are engaged and driven, the following problems may occur.

First, the worm gear 7a has a poor force transmission efficiency. In the above configuration, one worm gear 7a rotates two gears having different reduction ratios (stirring section gear 4c and discharging gear 2d), so that the force transmission efficiency is further deteriorated. Therefore, as the motor 7 that generates the driving force, a large motor with a large capacity is required.

Further, in general, in the powder or granular material supply device, the rotation ratio between the screw 2b and the stirring member 4b is set to 1: 5 to 10. 19 and 20 show a state in which the worm gear 7a, the stirring portion gear 4c, and the discharging gear 2d are arranged in the space below the inclined surface 3a of the chute 3, but as shown in the figure. If a small gear as shown in FIGS. 19 and 20 is used as these gears, the strength is completely insufficient. In fact, as a driving force transmission mechanism having such a structure, the inclined surface 3a of the chute 3 is used. You will have to use something that is large enough to protrude from the lower space.

Further, in the driving force transmission mechanism of the powder or granular material supply device 100 having the above configuration, two gears having different reduction ratios (stirring part gear 4c and discharging gear 2d) are arranged so as to mesh with one worm gear 7a. Therefore, high precision is required for the arrangement state associated with the assembly work, and as a result, these parts and the assembly cost are significantly increased.

Further, since the worm gear 7a generally has a very large slip on the tooth surface, it has a disadvantage that seizure is likely to occur. In order to improve such a disadvantage, it is important to manage the lubrication such that the lubricating material is well distributed to the portion including the worm gear 7a, which in turn requires a lot of labor and time for maintenance.

The present invention solves the above-mentioned problems, and can satisfactorily transmit the driving force from the motor to the stirring member of the stirring section and the screw of the discharging section, and the mechanism for transmitting the driving force is below the inclined surface of the chute. It is an object of the present invention to provide a powder or granular material supply device that can be arranged in a limited space.

In order to solve the above problems, the present invention has a hopper into which the powder and granules are charged, a discharge portion for discharging the powder and granules, a chute for guiding the powder and granules descending from the hopper to the discharge portion, and the chute. It is provided with a stirring unit that stirs the powder and granules by a stirring member that rotates inside the hopper, and a measuring unit that is arranged below the hopper, chute, and discharge unit and measures the powder and granules while supporting them. In the powder and granule supply device, the chute is formed with a circular inclined surface that is inclined so that the inner surface side thereof faces diagonally upward, and the stirring portion penetrates the center of the inclined surface of the chute in an orthogonal posture. The agitating member that rotates in the chute around the agitating member, the agitating section motor that generates the driving force to rotate the agitating member, and the driving force of the agitating motor are transmitted to the agitating member shaft. As the driving force transmission mechanism, a driven bevel gear that is attached to the shaft portion of the stirring member and has a radial direction in the same direction as the radial direction of the inclined surface, and the stirring motor. A drive cap gear to which the driving force is transmitted and meshes with the driven cap gear is provided, and the space below the inclined surface of the chute between the measuring portion and the surrounding area is covered with the transmission mechanism holding material. The drive cap gear and the driven cap gear are arranged in the captive gear transmission mechanism disposition space, and the captive gear transmission mechanism disposition space is filled with grease for lubricating the captive gear, so that the driven cap after gear of the transmission mechanism holding material is filled. A recessed portion for collecting lubricating grease is formed at a portion facing the lower end portion, and the recessed portion is formed by being recessed so as to face a portion facing the expanded lower end portion of the driven umbrella gear. It is characterized by.

According to this configuration, the driving force from the stirring motor is transmitted to the stirring member via the driving bevel gear and the driven bevel gear. Since the bevel gear has better power transmission efficiency than the case where the driving force is transmitted via the worm gear, a relatively small bevel gear having sufficient strength is used for these driving bevel gears and driven bevel gears. It can be used as a gear, and as a stirring motor that generates a driving force, a relatively small capacity can be used. Further, by arranging at least a part of the driven bevel gear and the driving bevel gear in the space between the measuring portion below the inclined surface of the chute, the space between the measuring portion below the inclined surface of the chute is provided. Can be used effectively.
Further, according to this configuration, the grease for lubricating the bevel gear stored in the recessed portion adheres to the tooth surface of the driven bevel gear and also adheres to the tooth surface of the drive bevel gear via the tooth surface of the driven bevel gear. However, the bevel gear lubrication grease can be satisfactorily spread over the tooth surfaces of both bevel gears without causing seizure, and the bevel gears can be satisfactorily meshed with each other. Further, since the grease for lubricating the bevel gear may be stored in the recess formed at the position facing the lower end of the driven bevel gear of the transmission mechanism holding material, the amount of the grease for lubricating the bevel gear can be suppressed to a small amount. It will be possible.

Further, the present invention is for transmitting the rotational driving force to the screw provided in the discharge portion in the spur gear transmission mechanism arrangement space whose circumference is covered by the transmission mechanism holding material below the inclined surface of the chute. The drive spur gear and the driven spur gear are arranged, and the spur gear lubrication grease is stored in the spur gear transmission mechanism arrangement space with the spur gear lubrication grease adhering to the lower end of the drive spur gear. It is characterized by.

According to this configuration, the grease for lubricating spur gears adheres to the tooth surface of the drive spur gear and also adheres to the tooth surface of the driven spur gear via the tooth surface of the drive spur gear without causing seizure. , Spur gear lubrication grease can be satisfactorily spread over the tooth surfaces of both spur gears, and spur gears can be satisfactorily meshed with each other. Further, since the grease for lubricating spur gears may be stored so as to adhere to the lower end portion of the drive spur gear, the amount of grease for lubricating spur gears can be suppressed to a small amount.

Further, the driven bevel gear is attached to a portion of the shaft portion of the stirring member that protrudes outward from the inclined surface of the chute, and the driven bevel gear has a shape that expands in the radial direction toward the side closer to the inclined surface of the chute. The drive bevel gear may be rotatable about an axis orthogonal to the shaft portion of the driven bevel gear and may be arranged so as to mesh with a tooth portion formed at the upper end portion of the driven bevel gear. Further, in this case, as the stirring motor, a stirring dedicated motor for exclusively rotating the stirring member may be used, and the rotational driving force of the stirring dedicated motor may be transmitted to the drive cap gear. good.

Further, instead of this, the driven bevel gear is attached to a shaft portion that protrudes outward from the inclined surface of the chute at the same axis as the shaft portion of the stirring member, and the driven bevel gear is separated from the inclined surface of the chute. The shape may be such that the drive bevel gear expands in the radial direction toward the side, and the drive bevel gear may be arranged so as to be rotatable around an axis arranged in the lateral direction and to mesh with a tooth portion formed at the upper end portion of the driven bevel gear. .. Further, in this case or the like, the stirring / discharging motor for rotating both the stirring member and the screw provided in the discharging portion is used as the stirring motor, and the stirring is performed on the drive cap gear. -It may be configured to transmit the rotational driving force of the discharge motor. According to this configuration, the screw of the stirring member and the discharging portion can be rotationally driven by one stirring / discharging motor.

Further, in this case, a driven spur gear for stirring that transmits a driving force may be attached to the shaft portion to which the drive bevel gear is attached, and the driven spur gear may be configured to mesh with the driven spur gear for stirring. .. Further, the drive spur gear is arranged below or diagonally below the driven spur gear for stirring, the rotation shaft of the drive spur gear is extended rearward, and the stirring member is above the rear extension portion of the rotation shaft of the drive spur gear. A stirring / discharging motor for rotating both the screw and the screw provided in the discharging portion may be arranged.

According to the present invention, as a driving force transmission mechanism for transmitting the driving force of the stirring motor to the shaft portion of the stirring member, the radial direction is the same as the radial direction of the inclined surface attached to the shaft portion of the stirring member. A driven bevel gear and a driven bevel gear to which the driving force of the stirring motor is transmitted to mesh with the driven bevel gear are provided, and the driven umbrella is provided in a space below the inclined surface of the chute and between the measuring portion. By arranging the gear and at least a part of the driving cap gear, the driving force from the stirring motor can be satisfactorily transmitted to the stirring member via the driving cap gear and the driven cap gear. , The space between the measuring portion below the inclined surface of the chute can be effectively used, and the installation space of the powder / granule supply device can be made compact.

Further, the drive bevel gear and the driven bevel gear are arranged in the bevel gear transmission mechanism arrangement space below the inclined surface of the chute and the circumference is covered with the transmission mechanism holding material, and the driven umbrella of the transmission mechanism holding material is arranged. By forming a recess for storing the bevel gear lubricating grease at the position facing the lower end of the gear, the bevel gear lubricating grease can be satisfactorily spread over the tooth surfaces of both bevel gears, and the bevel gears can be used with each other. Can be meshed well, and good reliability can be obtained. Further, since the grease for lubricating the bevel gear may be stored in the recess formed at the position facing the lower end of the driven bevel gear of the transmission mechanism holding material, the amount of the grease for lubricating the bevel gear can be suppressed to a small amount. It will be possible.

Further, a drive spur gear for transmitting the rotational driving force to the screw provided in the discharge portion in the spur gear transmission mechanism arrangement space whose circumference is covered by the transmission mechanism holding material below the inclined surface of the chute. A spur gear lubrication grease is placed by arranging a driven spur gear, and by accumulating spur gear lubrication grease in a state where spur gear lubrication grease adheres to the lower end of the drive spur gear in this spur gear transmission mechanism arrangement space. Can be satisfactorily spread over the tooth surfaces of both spur gears, spur gears can be satisfactorily meshed with each other, and good reliability can be obtained. Further, since the grease for lubricating spur gears may be stored so as to adhere to the lower end portion of the drive spur gear, the amount of grease for lubricating spur gears can be suppressed to a small amount.

Further, the driven bevel gear is attached to a shaft portion that protrudes outward from the inclined surface of the chute at the same axis as the shaft portion of the stirring member, and the driven bevel gear is radially toward the side away from the inclined surface of the chute. The drive bevel gear has an expansive shape, is rotatable around an axis arranged in the lateral direction, and is arranged so as to mesh with the tooth portion formed at the upper end of the driven bevel gear, or as the stirring motor. A stirring / discharging motor for rotating both the stirring member and the screw provided in the discharging portion is used, and the rotational driving force of the stirring / discharging motor is transmitted to the driving cap gear. By doing so, the screw of the stirring member and the discharging portion can be rotationally driven by one stirring / discharging motor. As a result, the number of motors can be reduced and the manufacturing cost can be reduced as compared with the case where two motors, a stirring motor and a discharging motor, are provided. Further, since only one control unit (controller) of the motor (stirring / discharging motor) is required, the manufacturing cost related to this can be reduced. Further, the motor connection wiring (so-called motor harness) is connected to the motor. In this case, only one set of motor connection wiring can be used, so that the adverse effect on the measured value can be minimized. Therefore, it is possible to maintain high accuracy.

In addition, a driven spur gear for stirring that transmits the driving force is attached to the shaft portion to which the drive cap gear is attached, and the driven spur gear is configured to mesh with the driven spur gear for stirring. The drive spur gear is arranged downward or diagonally downward, the rotation shaft of the drive spur gear is extended rearward, and the stirring member and the discharge portion are provided above the rear extension portion of the rotation shaft of the drive spur gear. By arranging a stirring / discharging motor for rotating both the screw and the screw, it is possible to make the installation space of the powder / granule supply device compact.

It is a front view of the powder / granular material supply device which concerns on embodiment (1st Embodiment) of this invention. It is a side view of the same powder or granular material supply device. It is a top view of the same powder or granular material supply device. It is a side sectional view of the same powder or granular material supply device. It is an enlarged side sectional view of the main part of the powder or granular material supply device. It is a side sectional view of the modification of the powder / granular material supply device. It is a side sectional view of another modification of the same powder or granular material supply device. It is a front view of the powder / granular material supply device which concerns on 2nd Embodiment of this invention. It is a side view of the same powder or granular material supply device. It is a top view of the same powder or granular material supply device. It is a perspective view of the same powder or granular material supply device seen from diagonally rearward. It is a side sectional view of the same powder or granular material supply device. It is an enlarged side sectional view of the main part of the powder or granular material supply device. It is a side sectional view of the modification of the powder / granular material supply device. It is a side sectional view of another modification which provided the explosion-proof type motor of the same powder or granular material supply device. It is a side sectional view of the other modified example provided with the explosion-proof motor of the powder or granular material supply device. It is a side sectional view of the other modified example provided with the explosion-proof motor of the powder or granular material supply device. It is a front view of the conventional powder or granular material supply device. It is a partial notch side view of the conventional powder or granular material supply device. It is a perspective view of the conventional powder or granular material supply device.

Hereinafter, the powder or granular material supply device according to the embodiment of the present invention will be described with reference to the drawings. The same components as those of the conventional powder or granular material supply device 100 shown in FIGS. 18 to 20 are designated by the same reference numerals.
As shown in FIGS. 1 to 4, the powder or granular material supply device 10 according to the embodiment of the present invention (first embodiment) discharges the hopper 1 into which the powder or granular material is charged and the powder or granular material. A stirring unit 4 that stirs the powder or granular material in the chute 3 by a discharging unit 2 that guides the powder or granular material that has fallen from the hopper 1 to the discharging unit 2, and a stirring member 4b that rotates inside the chute 3. And, it is arranged below the hopper 1, the chute 3 and the discharge part 2, and is provided with a measuring part 5 for measuring the powder or granular material while supporting the hopper 1, the chute 3 and the discharging part 2. In this embodiment, the measuring unit 5 is assembled on a horizontally arranged horizontal support base 6. Further, the hopper 1 and the chute 3 form a storage portion for storing powder or granular materials.

As shown in FIGS. 1 to 3, the upper ends of the hopper 1 and the chute 3 are circular in a plan view and have the same cross-sectional shape in the vertical direction, that is, a straight cylinder type circular shape, and the lower rear surface side of the chute 3 is formed. (That is, one side of the lower part of the storage portion 2) is formed with an inclined surface 3a that is inclined so that its inner surface side faces diagonally upward (that is, it is inclined toward the front toward the lower side). 3a is configured to guide the powder or granular material to the discharge portion 2 in a shape in which the cross-sectional area of the flow path into which the powder or granular material flows becomes smaller toward the bottom. Further, a side wall portion 3c is formed on the upper portion of the chute 3, and a truncated cone shape is formed between the side wall portion 3c and the inclined surface 3a so as to be inclined diagonally upward from the outer periphery of the inclined surface 3a of the chute 3. Conical wall portion 3b is formed. In this powder or granular material supply device 10, as shown in FIGS. 1 and 3, the lower side of the side wall portion 3c of the chute 3 is widened in the width direction, and the lower side is formed in a cross-sectional shape larger than the upper side. As shown in FIG. 2, when viewed from the side, the side wall portion 3c at the front end and the side wall portion 3c at the rear end are formed straight in the vertical direction, and these side wall portions 3c are gently formed in the circumferential direction and the vertical direction. It is formed in a connected shape.

As shown in FIGS. 1 and 3 to 5, the stirring unit 4 exerts a shaft portion 4a, a stirring member 4b rotating in the chute 3 about the shaft portion 4a, and a driving force for rotating the stirring member 4b. A stirring motor 4d with a generated deceleration unit (stirring deceleration unit) 4c, and a driving force transmission mechanism (stirring driving force transmission mechanism) 4f that transmits the driving force of the stirring motor 4d to the shaft portion 4a of the stirring member 4b. And have.

The shaft portion 4a of the stirring portion 4 is arranged so as to penetrate the center of the inclined surface 3a at right angles, and the portion of the shaft portion 4a protruding from the inside of the bottom surface portion 3a of the chute 3 (note that the hopper 1 is used in FIG. 4). It is shown in the omitted state, and shows a state in which the mounting bolt 4a'attached to the upper end portion of the shaft portion 4a protrudes from the inside of the bottom surface portion 3a of the chute 3.) The stirring member 4b is attached. ing. In this embodiment, the mounting adapter 4e is attached to the shaft portion 4a of the stirring portion 4 protruding into the inclined surface 3a of the chute 3, and the stirring member 4b is attached via the mounting adapter 4e. .. The stirring member 4b of the stirring portion 4 has a shape that extends along the radial direction of the inclined surface 3a, bends from the tip portion that further extends in the radial direction, and is inclined and spread along the conical wall portion 3b. There is. Then, the stirring member 4b of the stirring portion 4 rotates along the inclined surface 3a and the conical wall portion 3b of the chute 3, so that the powder or granular material is moved in various directions of the vertical direction and the circumferential direction, and the stirring member 4b is satisfactorily moved. It is agitated so that the occurrence of bridges in the chute 3 and the hopper 1 can be prevented extremely well.

As shown in FIGS. 4 and 5, the driving force transmission mechanism 4f is attached to the shaft portion 4a of the stirring member 4b, and the driven bevel gear 4g whose radial direction is the same as the radial direction of the inclined surface 3a of the chute 3 The driving bevel gear 4h, in which the driving force of the stirring motor 4d is transmitted via the reduction gear 4c and meshes with the driven bevel gear 4g, and the driven bevel gear bearings 4i and 4j that rotatably support the driven bevel gear 4g. A transmission mechanism holding material 4k for accommodating and holding the driven cap gear 4g, the driving cap gear 4h, the driven cap gear bearings 4i, 4j, and the like is provided.

The driving force transmission mechanism 4f is arranged in a space below the inclined surface 3a of the chute 3 and between the measuring portion 5, and the lower surface portion of the transmission mechanism holding material 4k is attached to the upper surface of the measuring portion 5. ing. Here, the driven bevel gear 4g, the driving bevel gear 4h, and the driven bevel gear bearings 4i and 4j are arranged in the bevel gear transmission mechanism arrangement space 4m whose circumference is covered and sealed by the transmission mechanism holding material 4k. Strictly speaking, the driven bevel gear 4g and a part of the driving bevel gear 4h (the upper portion in this embodiment) are arranged in the space below the inclined surface 3a of the chute 3 and between the measuring portion 5. ing.

As shown in FIG. 5, the transmission mechanism holding material 4k has the transmission mechanism holding material 22p on the first holding main body 4ka assembled on the upper surface of the measuring unit 5 and the upper part of the first holding main body 4ka. The second holding main body 4kb that is connected in the combined state to form the bevel gear transmission mechanism arrangement space 4m and holds the driven bevel gear bearing 4i, and the second holding main body 4kb that is attached to the housing output side portion of the stirring deceleration unit 4c. 1 The first connecting material 4kc that connects the holding body 4ka and the stirring deceleration unit 4c, and the first holding body 4ka and the discharging deceleration unit 2h that are attached to the housing output side portion of the discharging deceleration unit 2h described later. It is composed of a second connecting member 4kd for connecting the chute 3 and a third connecting member 4ke which is attached to the outer surface of the inclined surface 3a of the chute 3 and connects the chute 3 and the second holding main body 4kb.

Then, as shown in FIGS. 4 and 5, a driven bevel gear 4g is attached to a portion of the shaft portion 4a of the stirring member 4b that protrudes outward from the inclined surface 3a of the chute 3. The chute 3 is arranged so as to expand in the radial direction toward the inclined surface 3a. Further, the drive bevel gear 4h is rotatable about an axis orthogonal to the shaft portion 4a of the driven bevel gear 4h, and is arranged so as to mesh with a tooth portion formed at the upper end portion of the driven bevel gear 4g. Further, the deceleration unit 4c and the stirring motor 4d are arranged in a direction in which the axis of the drive bevel gear 4h extends diagonally upward, that is, in a posture extending diagonally upward at a position behind the chute 3. The stirring motor 4d is a dedicated stirring motor for exclusively rotating the stirring member 4b. Further, although not shown, the deceleration unit 4c has a built-in deceleration mechanism such as a planetary gear mechanism, and the torque is amplified and driven by decelerating the rotation of the stirring motor 4d via the deceleration unit 4c. It is output to the shaft side of the bevel gear 4h.

The bevel gear transmission mechanism arrangement space 4m in the transmission mechanism holding material 4k is filled with bevel gear lubrication grease G1 for lubricating the meshing portion between the driven bevel gear 4g and the drive bevel gear 4h. In this embodiment, the transmission mechanism holding material 4k (more specifically, the first holding main body 4ka of the transmission mechanism holding material 4k) faces the lower end of the driven bevel gear 4g and the lower end of the drive bevel gear 4h. A recessed portion for accumulating the bevel gear lubricating grease G1 is recessed so as to face the enlarged lower end portion of the driven bevel gear 4g (recessed in a V shape in this embodiment). Each of the 4p is formed, and the recessed portion 4p or the region including the recessed portion 4p is filled with the bevel gear lubricating grease G1.

Further, as shown in FIG. 4, the discharge portion 2 is provided following the lower end portion of the chute 3. The discharge section 2 has a long horizontal cross section in the shape of a glasses (see FIG. 1) or a substantially cylindrical shape, and has a two-axis or one-axis screw inside the discharge cylinder 2a and the screw casing 2e extending in the front-rear direction. 2b (in FIGS. 1 to 4, a case where the screw 2b is a two-axis type is shown, and in FIG. 6, a case where the screw 2b is a one-axis type is shown) is rotatably arranged. Then, the portion extending in the front-rear direction of the conical wall portion 3b of the chute 3 and the upper edge portion of the screw casing 2e are linearly connected and opened, and the powder or granular material is screwed from this opening (also referred to as a supply port) 2d. It is configured to be filled inside the casing 2e. A discharge outlet cylinder 2c having an opening formed below is connected to the tip of the discharge cylinder 2a, and the powder or granular material sent out into the discharge outlet cylinder 2c by the screw 2b is downward from the discharge outlet cylinder 2c. It is discharged to (outside).

Further, in this embodiment, the connecting shaft 2r connected to the shaft 2b'of the screw 2b at the same axis is rotatably held in the lower space 4q provided under the transmission mechanism holding material 4k in a horizontal posture. A screw bearings 2f, 2g, and the like are arranged, and a discharge motor 2k is attached behind the screw bearings 2f and 2g via a speed reduction unit (discharge reduction unit) 2h. As shown in FIG. 6, when the uniaxial screw 2b is provided, the output shaft of the deceleration unit 2h is connected to the connecting shaft 2r connected to the shaft 2b'of the screw 2b via the connecting cylinder 2s. When they are connected (a modified example of the powder and granule supply device according to the first embodiment), but instead, as shown in FIGS. 4 and 5, a biaxial screw 2b is provided. Is a driven spur gear 2m, 2n in which a drive spur gear 2j is attached to the output shaft of the reduction gear 2h, and the driven spur gear 2m is attached to the rear end of the connecting shaft 2r of the two-shaft screw 2b at different positions of the drive spur gear 2j. Are meshed. The drive spur gear 2j and the driven spur gear 2m and 2n are below the inclined surface 3a of the chute 3 (more specifically, further below the bevel gear transmission mechanism arrangement space 4m in the transmission mechanism holding member 4k). The drive spur gear 2j and the driven spur gear 2m and 2n are arranged in the spur gear transmission mechanism arrangement space 4n whose circumference is covered with the transmission mechanism holding material 4k, and the drive spur is arranged in the spur gear transmission mechanism arrangement space 4n. The spur gear lubricating grease G2 is stored in a state where the spur gear lubricating grease G2 is attached to the lower end portion of the gear 2j. The spur gear lubrication grease G2 may have the same component (same type) as the bevel gear lubrication grease G1 or may have a different component (same type). Further, although not shown, the deceleration unit 2h of the discharge unit 2 also has a built-in deceleration mechanism such as a planetary gear mechanism, and torque is obtained by decelerating the rotation of the discharge motor 2k via the deceleration unit 2h. Is amplified and output to the shaft 2b'side of the screw 2b via the connecting shaft 2r.

Further, in this embodiment, the lower surface of the transmission mechanism holding material 4k and a part of the screw casing 2e are fixed to the upper surface portion of the measuring unit 5, whereby the measuring unit 5 has the hopper 1, the chute 2 and the discharge. It is arranged below the portion 2 so that the amount of powder or granular material discharged can be measured in a state of supporting them.

A control unit (not shown) is connected to the stirring motor 4d and the discharging motor 2k via a motor connection wiring (so-called motor harness), and the supply amount (discharge amount) from the discharging unit 2 by each control unit. The rotation speeds of the stirring motor 4d and the discharging motor 2k are adjusted so that

According to the above configuration, the driving force from the stirring motor 4d is transmitted to the stirring member 4b via the driving bevel gear 4h and the driven bevel gear 4g in the driving force transmission mechanism 4f. These bevel gears (driving bevel gear 4h and driven bevel gear 4g) are reliable as a driving force transmission mechanism 4f because the force transmission efficiency is better than when the driving force is transmitted via the worm gear. It is possible to improve the performance and to use a stirring motor 4d that generates a driving force with a relatively small capacity. Further, since the driving force transmission mechanism 4f is arranged so that the driving bevel gear 4h and the driven bevel gear 4g are meshed with each other, the assembling work can be performed relatively easily and the work efficiency is good.

Further, by arranging at least a part of the driven bevel gear 4g and the driving bevel gear 4h in the space between the measuring portion 5 below the inclined surface 3a of the chute 3, the lower part of the inclined surface 3a of the chute 3 is arranged. The space between the measuring unit 5 and the measuring unit 5 can be effectively used.

Further, according to the above configuration, since the driving bevel gear 4h and the driven bevel gear 4g are meshed with each other in the driving force transmission mechanism 4f, the tooth surface is less likely to slip and seizure is less likely to occur. Further, in this embodiment, the grease G1 for lubricating the bevel gear stored in both recesses 4p adheres to the tooth surface of the driven bead gear 4g and the tooth surface of the driving bead gear 4h, so that seizure occurs. Without this, the grease G1 for lubricating the bevel gears can be satisfactorily spread over the tooth surfaces of both bevel gears 4h and 4g, and the bevel gears 4h and 4g can be satisfactorily meshed with each other.

When assembling the powder / granule supply device 10, a relatively large amount of lubricating grease G may be filled only in one recess 4p, and in this case, it is stored in one recess 4p. The grease G1 for lubricating the bevel gear adheres to the tooth surface of the driven bead gear 4g or the driving bead gear 4h, and also adheres to the tooth surface of another bevel gear via the meshing portion of the tooth surface of the bevel gear 4g and 4h. However, the grease G1 for lubricating the bevel gear can be satisfactorily spread over the tooth surfaces of both bevel gears without causing seizure or the like.

Further, according to the above configuration, in the spur gear transmission mechanism arrangement space 4n whose circumference is covered by the transmission mechanism holding material 4k below the inclined surface 3a of the chute 3, the screw 2b provided in the discharge portion 2 is provided. A drive spur gear 2j and a driven spur gear 2m and 2n for transmitting rotational driving force are arranged, and spur gear lubrication grease G2 adheres to the lower end portion of the drive spur gear 2j in the spur gear transmission mechanism arrangement space 4n. By accumulating the spur gear lubricating grease G2 in this state, the spur gear lubricating grease G2 can be satisfactorily distributed over the tooth surfaces of both spur gears 2j, 2m and 2n, and the spur gears 2j and 2m, The 2n can be satisfactorily meshed with each other, and good reliability can be obtained. Further, since the spur gear lubrication grease G2 may be stored so as to adhere to the lower end portion of the drive spur gear 2j, the amount of the spur gear lubrication grease G2 can be suppressed to a small amount.

Further, in the above embodiment, the upper end portion of the hopper 1 and the chute 3 is circular in a plan view, the lower side of the side wall portion 3c of the chute 3 expands in the width direction, and the lower side is larger than the upper side. Although the case where the shape is formed is described, the present invention is not limited to this, and as shown in FIG. 7, the upper part of the hopper 1 and the chute 3 (the side wall portion 3c of the chute 3) has an elliptical shape in a plan view. It can be applied even if it has the same cross-sectional shape in the vertical direction, that is, a straight cylinder type elliptical shape, and it can be applied to various shapes having an inclined surface 3a on one side as a chute 3. (Another modification of the powder / granule supply device according to the first embodiment).

In the first embodiment, the case where the stirring unit 4 and the discharging unit 2 are provided with dedicated motors (stirring motor 4d and discharging motor 2k), a driving force transmission mechanism 4f, and the like, respectively, has been described. However, the stirring member of the stirring unit 4 is not limited to this, and one motor (stirring / discharging motor 21) is used as in the powder / granular material supply device 20 of the second embodiment shown in FIGS. 8 to 13. Both the 4b and the screw 2b of the discharge unit 2 may be driven.

In the powder or granular material supply device 20 according to the second embodiment, one motor, the stirring / discharging motor 21, drives both the stirring member 4b of the stirring unit 4 and the screw 2b of the discharging unit 2. The configuration of the driving force transmission mechanism 22 for transmitting the driving force from the stirring / discharging motor 21 to the stirring member 4b of the stirring unit 4, and the drive from the stirring / discharging motor 21 to the screw 2b of the discharging unit 2. The structure for transmitting force is different from the powder / granular material supply device 10 according to the first embodiment, and the other structures are the same as those for the powder / granular material supply device 10 according to the first embodiment. Therefore, the same components are designated by the same reference numerals and the description thereof will be omitted. Further, in FIGS. 10 and 11, the hopper 1 is omitted.

As described above and as shown in FIGS. 8 to 12, in the powder / granular material supply device 20 according to the second embodiment, one stirring / discharging motor 21 is used for the stirring member 4b and the discharging unit of the stirring unit 4. It is configured to drive both the screw 2b and the screw 2b. The stirring / discharging motor 21 is also equipped with a deceleration unit (stirring / discharging deceleration unit) 23, and the deceleration unit 23 includes a deceleration mechanism such as a planetary gear mechanism and a bevel gear. Then, by decelerating the rotation of the stirring / discharging motor 21 via the deceleration unit 23, the torque is amplified and the drive rotational force is output from the output shaft 23a of the deceleration unit 23.

As shown in FIGS. 12 and 13, the driving force transmission mechanism 22 of the powder / granule supply device 20 is attached to a portion of the shaft portion 4a of the stirring member 4 that protrudes outward from the inclined surface 3a of the chute 3. Stirring with the driven bevel gear 22a, which is rotatable around a rotating shaft 22b arranged in the lateral direction, and is arranged so as to mesh with the tooth portion formed at the upper end of the driven bevel gear 22a. Driven cap gear bearings 22d and 22e that rotatably support the shaft portion 4a and the driven cap gear 22a of the member 4, and drive cap gear bearings 22f and 22g that rotatably support the rotary shaft 22b of the drive cap gear 22c. The driven spur gear 22h for stirring, which is attached to the other end of the rotary shaft 22b of the bevel gear 22c and transmits the rotational driving force from the stirring / discharging motor 21 to the driving bevel gear 22c, and the output shaft 23a of the reduction unit 23. A drive spur gear 22i that is assembled and meshes with the driven spur gear 22h for stirring at a portion near the upper part of the tooth surface, a discharge input spur gear 22j that meshes with the lower tooth surface of the drive spur gear 22i, and a discharge input spur gear. The drive spur gear (driving spur gear) 2j integrally formed on the front side of 22j, the shaft 22m to which the discharge input spur gear 22j and the discharge output spur gear 22k are assembled, and the shaft 22m are rotatable. The driven spur gear 2m, which meshes with the bearings 22n and 22o supported by the above and the drive spur gear (driving spur gear) 2j at different positions, and is attached to the rear end of the connecting shaft 2r of the two-axis screw 2b, respectively. 2n and a transmission mechanism holding material 22p for accommodating and holding these components are provided.

The front side portion of the driving force transmission mechanism 22 in which the driven bevel gear 22a and the driving bevel gear 22c are arranged is arranged in the space below the inclined surface 3a of the chute 3 and between the measuring portion 5. The lower surface of the driving force transmission mechanism 22 is attached to the upper surface of the measuring unit 5. Here, the components including the driven bevel gear 22a and the driving bevel gear 22c are surrounded by the transmission mechanism holding material 22p (specifically, the first holding main body 22pa and the second holding main body 22pb of the transmission mechanism holding material 22p described later). Strictly speaking, the driven bevel gear 4g and the driving bevel gear are arranged in the space between the measuring portion 5 below the inclined surface 3a of the chute 3 and arranged in the transmission mechanism arrangement space 22q which is covered and sealed. A part of 4h (a part closer to the upper part in this embodiment) is arranged.

The shaft portion 4a of the stirring member 4 projects diagonally downward (diagonally rearward) from the inclined surface 3a of the chute 3, and the driven bevel gear 22a attached to the shaft portion 4a is from the inclined surface 3a of the chute 3. The shape is such that the farther the side is, the larger it is in the radial direction. The rotary shaft 22b of the drive bevel gear 22c is rotatably supported around a substantially horizontal axis, and the drive bevel gear 22c has a shape that expands in the radial direction toward the rear side (that is, the side away from the inclined surface 3a of the chute 3). It meshes with the driven bevel gear 22a.

Further, in this embodiment, the drive spur gear 22i is arranged diagonally below the stirring driven spur gear 22h, and the output shaft 23a of the speed reduction unit 23 to which the drive spur gear 22i is attached is extended rearward. It is connected to the deceleration unit 23, and the stirring / discharging motor 21 is arranged above the deceleration unit 23. The drive spur gear may be arranged below the stirring driven spur gear 22h.

In this embodiment, the stirring driven spur gear 22h assembled to the other end of the rotating shaft 22b of the driving bevel gear 22c is larger than the driving spur gear 22i that meshes with the stirring driven spur gear 22h. The number of teeth is increased due to the diameter, the speed is further reduced from the output shaft 23a of the reduction gear 23, and the speed is transmitted to the drive bevel gear 22c. On the other hand, the discharge input spur gear 22j that meshes with the lower part of the drive spur gear 22i has substantially the same diameter as the drive spur gear 22i and has the same number of teeth, and is further decelerated from the output shaft 23a of the reduction gear 23. It is transmitted to the drive bevel gear 22c. Further, the drive spur gear (discharge drive spur gear) 2j integrally formed with the discharge input spur gear 22j has a smaller diameter and a smaller number of teeth than the discharge input spur gear 22j, and the discharge input spur gear has a smaller number of teeth. It meshes with the driven spur gears 2m and 2n, which have a smaller diameter than the gear 22j.

Further, as shown in FIG. 13, the transmission mechanism holding material 22p is connected to the first holding main body 22pa assembled on the upper surface of the measuring unit 5 in a state of being aligned with the upper part of the first holding main body 22pa. The second holding main body 22pb that forms the transmission mechanism arrangement space 22q and holds the driven bevel gear bearing 22d, the driven spur gear 22h for stirring, and the spur gear 22i for driving that are attached to the housing output side of the deceleration unit 23. , The first connecting member 22pc that covers the discharge input spur gear 22j and the like from the rear and connects the first holding body 22pa and the deceleration unit 23, and the chute 3 and the second chute 3 attached to the outer surface of the inclined surface 3a of the chute 3. It is composed of a second connecting material 22pd or the like that connects the holding main body 22pb.

The transmission mechanism arrangement space 22q in the transmission mechanism holding member 22p is filled with grease G1 for lubricating the bevel gear that lubricates the meshing portion between the driven bevel gear 22a and the driving bevel gear 22c. In this embodiment, the transmission mechanism holding material 22p (more specifically, the first holding main body 22pa of the transmission mechanism holding material 22p) faces the lower end of the driven bevel gear 22a and faces the lower end of the enlarged diameter portion. A recessed portion 22r for accumulating the bevel gear lubricating grease G1 is formed by being recessed so as to be downward (in this embodiment, it is recessed in a V shape), and the recessed portion 22r or a region including the recessed portion 22r. Is filled with bevel gear lubrication grease G1.

Further, as shown in FIGS. 10, 12, and 13, the discharge unit 2 is provided following the lower end portion of the chute 3, as in the above embodiment shown in FIG. 5 and the like. The discharge section 2 has a long horizontal cross section in the shape of a glasses or a substantially cylindrical shape, and has a biaxial or uniaxial screw 2b inside a discharge cylinder 2a and a screw casing 2e extending in the front-rear direction (FIGS. 10 and 10 and). In FIGS. 12 and 13, a case where the screw 2b is a biaxial type is shown, and in FIG. 14, a case where the screw 2b is a uniaxial type) is rotatably arranged. Then, the portion extending in the front-rear direction of the conical wall portion 3b of the chute 3 and the upper edge portion of the screw casing 2e are linearly connected and opened, and the powder or granular material is screwed from this opening (also referred to as a supply port) 2d. It is configured to be filled inside the casing 2e. A discharge outlet cylinder 2c having an opening formed below is connected to the tip of the discharge cylinder 2a, and the powder or granular material sent out into the discharge outlet cylinder 2c by the screw 2b is downward from the discharge outlet cylinder 2c. It is discharged to (outside).

Further, also in this embodiment, the connecting shaft 2r connected to the shaft 2b'of the screw 2b at the same axis is rotatably held in the lower space 22s provided under the transmission mechanism holding material 22p in a horizontal posture. A screw bearing 2f, 2g, etc. are arranged, and further behind this, via an output gear 2j, an input spur gear for discharge 22j, a spur gear for driving 22i, and a speed reducing unit (agitating / discharging speed reducing unit) 23, A stirring / discharging motor 21 is attached. As shown in FIG. 14, when the uniaxial screw 2b is provided, the output shaft 23a of the speed reduction unit 2h is a discharge input spur gear on the connecting shaft 2r connected to the shaft 2b'of the screw 2b. They are connected via a tubular portion of 22j (a modified example of the powder or granular material supply device according to the second embodiment). Further, also in this embodiment, the screw 2b provided in the discharge portion 2 is provided in the spur gear transmission mechanism arrangement space 4n whose circumference is covered by the transmission mechanism holding material 4k below the inclined surface 3a of the chute 3. A drive spur gear 2j and a driven spur gear 2m and 2n for transmitting rotational driving force are arranged, and spur gear lubrication grease G2 adheres to the lower end portion of the drive spur gear 2j in the spur gear transmission mechanism arrangement space 4n. In this state, the spur gear lubrication grease G2 is stored.

Further, also in the second embodiment shown in FIGS. 8 to 14, the lower surface of the transmission mechanism holding material 22p and a part of the screw casing 2e are fixed to the upper surface portion of the measuring portion 5, thereby measuring. The portion 5 is arranged below the hopper 1, the chute 2, and the discharge portion 2, and is adapted to adjust the discharge amount of the powder or granular material in a state of supporting them. Further, a control unit (not shown) is connected to the stirring / discharging motor 21 via a motor connection wiring (so-called motor harness), and the supply amount (discharge amount) from the discharge unit 2 is constant by this control unit. The rotation speed of the stirring / discharging motor 21 is adjusted so as to be.

According to the above configuration, the driving force from the stirring / discharging motor 21 is transmitted to the driving spur gear 22i via the deceleration unit (stirring / discharging deceleration unit) 23 and meshes with the driving spur gear 22i. It is divided and transmitted to both spur gears of the driven spur gear 22h for stirring and the input spur gear 22j for discharge. As described above, since the structure is such that both the stirring member 4b of the stirring unit 4 and the screw 2b of the discharging unit 2 are driven by one stirring / discharging motor 21, for stirring as in the first embodiment. Compared with the case where two motors, the motor 4d and the discharge motor 2k, are provided, the number of motors can be reduced and the manufacturing cost can be reduced.

Further, when two motors of the stirring motor 4d and the discharging motor 2k are provided as in the first embodiment, the control unit for controlling each of the stirring motor 4d and the discharging motor 2k is provided. (Controller) is required, but according to the present embodiment, since only one control unit (controller) of the motor (stirring / discharging motor 21) is required, the manufacturing cost related to this can be reduced. ..

Further, since a motor connection wiring (so-called motor harness) is connected to the motor, when two motors, a stirring motor 4d and a discharging motor 2k, are provided as in the first embodiment. Two sets of motor connection wiring to connect to these motors are also required. In this case, in the powder or granular material supply device 20 for quantitatively supplying the powder or granular material, the two sets of motor connection wiring may adversely affect the measured value and reduce the accuracy due to vibration during driving or the like. .. On the other hand, in this embodiment, since one set of motor connection wiring can be used, the adverse effect on the measured value can be minimized, and high accuracy can be maintained.

Further, according to the above configuration, since the stirring / discharging motor 21 and the deceleration unit (stirring / discharging deceleration unit) 23 are arranged so as to extend upward from the rear of the driving force transmission mechanism 22, the powder particles are concerned. The installation space of the body supply device 20 can be made extremely compact.

Further, in the above configuration, the driving force transmitted from the stirring / discharging motor 21 to the stirring driven spur gear 22h via the deceleration unit (stirring / discharging deceleration unit) 23 and the driving spur gear 22i is driven. It is transmitted to the stirring member 4b via the bevel gear 22c and the driven bevel gear 22a. These bevel gears (driving bevel gear 22c and driven bevel gear 22a) are reliable as a driving force transmission mechanism 22 because the force transmission efficiency is better than when the driving force is transmitted via the worm gear. It is possible to improve the performance and to use a stirring / discharging motor 21 that generates a driving force with a relatively small capacity. Further, in the driving force transmission mechanism 22, the driving bevel gear 4h and the driven bevel gear 4g are meshed with each other, or the spur gears (driving spur gear 22i, stirring driven spur gear 22h and discharge input spur gear 22j) are meshed with each other. Since the arrangement is such that the assembly work can be performed relatively easily, the work efficiency is also good.

Further, according to the above configuration, the driven bevel gear 22a and the driving bevel gear 22c can be arranged in the space between the measuring portion 5 below the inclined surface 3a of the chute 3, whereby the chute 3 can be arranged. The space between the measuring portion 5 below the inclined surface 3a can be used more effectively. Further, since the driving force transmission mechanism 22 is configured to mesh the driven bevel gear 22a and the driving bevel gear 22c, the tooth surface is less likely to slip and seizure is less likely to occur.

Further, in this embodiment, the bevel gear lubricating grease G1 stored in the recessed portion 22r first adheres to the tooth surface of the driven bevel gear 22a, and further, the teeth of the driving bevel gear 22c that mesh with the driven bevel gear 22a. Since it adheres to the surface, the bevel gear lubricating grease G1 can be satisfactorily spread over the tooth surfaces of both bevel gears without causing seizure, and the bevel gears can be satisfactorily meshed with each other. Further, since the bevel gear lubrication grease G1 only needs to be stored only in the recessed portion 22r formed at the portion facing the lower end portion of the driven bevel gear 22a of the transmission mechanism holding material 22, the amount of the bevel gear lubrication grease G1 can be increased. It is possible to suppress it to a small extent.

Further, also in this embodiment, the drive spur gear 2j, the driven spur gear 2m, 2n, the driven spur gear 22h for stirring, and the input spur for discharge are provided in the spur gear transmission mechanism arrangement space 4n below the inclined surface 3a of the chute 3. A gear 22j or the like is arranged, and in the spur gear transmission mechanism arrangement space 4n, the spur gear lubrication grease G2 is stored in a state where the spur gear lubrication grease G2 is attached to the lower end portion of the drive spur gear 2j. As a result, the spur gear lubrication grease G2 is satisfactorily adhered to the wave surface of these spur gears, and the spur gear lubrication grease G2 is satisfactorily spread over the tooth surfaces of these spur gears without causing seizure or the like. And the spur gears can be meshed well with each other. Further, since the spur gear lubrication grease G2 may be stored so as to adhere only to the lower end portion of the drive spur gear 2j, the amount of the spur gear lubrication grease G2 can be suppressed to a small amount.

In the above embodiment, the drive spur gear 22i assembled to the output shaft 23a of the speed reduction unit 23 is meshed with the driven spur gear 22h for stirring and the input spur gear 22j for discharge. Since the diameter of the driven spur gear 22h for stirring is larger than that of the input spur gear 22j for discharge and the number of teeth is larger, the stirring member 4b of the stirring unit 4 rotates at a lower speed than the screw 2b of the discharging unit 2 (that is, the discharging unit). The screw 2b of 2 rotates at a high speed, and the stirring member 4b of the stirring unit 4 rotates at a low speed). However, the configuration is not limited to this, and conversely, the diameter of the discharge input spur gear 22j may be larger than that of the stirring driven spur gear 22h and the number of teeth may be larger. In this case, the discharge unit may be used. The stirring member 4b of the stirring unit 4 rotates at a higher speed than the screw 2b of 2 (that is, the screw 2b of the discharging unit 2 rotates at a lower speed, and the stirring member 4b of the stirring unit 4 rotates at a higher speed).

In the above embodiment, the case where a commonly used motor capable of controlling the rotation speed (for example, a servo motor) is used as the stirring / discharging motor 21 is shown, but FIG. 15 (2-axis type) is shown. As shown in (with a screw 2b) and FIG. 16 (with a uniaxial screw 2b), by using an explosion-proof stirring / discharging motor 21'as the stirring / discharging motor 21. , The powder or granular material supply device 20 corresponding to the explosion-proof environment can be obtained. Further, since the structure is such that both the stirring member 4b of the stirring unit 4 and the screw 2b of the discharging unit 2 are driven by one stirring / discharging motor 21, only one stirring / discharging motor 21 is explosion-proof. By adopting the structure, there is an advantage that the structure is relatively simple and can be easily dealt with while minimizing the increase in manufacturing cost.

Further, in FIGS. 15 and 16, as in the configuration of the powder or granular material supply device 20 shown in FIGS. 12 and 14, a driving force transmission mechanism incorporating a driven bevel gear 22a, a driving bevel gear 22c, and the like is incorporated. The explosion-proof stirring / discharging motor 21'and the deceleration unit (stirring / discharging deceleration unit) 23 are arranged so as to extend upward from the rear of the 22. According to this structure, the explosion-proof structure is relatively easy. However, it is possible to make the installation space of the powder or granular material supply device 20, particularly the installation space in a plan view, extremely compact without increasing the installation space.

In addition, such an explosion-proof type stirring / discharging motor 21'may be assembled in place of the two motors (stirring motor 4d and discharging motor 2k) shown in FIGS. 4 and 6, respectively. , The powder or granular material supply device 10 corresponding to the explosion-proof environment can be obtained.

However, the present invention is not limited to this, and as shown in FIG. 17, when the explosion-proof stirring / discharging motor 221 "is larger, the stirring / discharging motor 21" is used in the measuring unit 5. The output gear 25 and the driving force of the driving force transmission mechanism 22 are arranged on the side surface (for example, the left side portion or the right side portion) and assembled to the output portion of the explosion-proof stirring / discharging motor 21 ". The input gear 26 for input may be configured to be interlocked with the endless transmission member 27 such as a belt or a chain.

1 Hopper 2 Discharge section 2b Screw 2h Deceleration section (Discharge deceleration section)
2k Discharge motor 3 Chute 3a Inclined surface 3b Conical wall part 3c Side wall part 4 Stirring part 4a Shaft part 4b Stirring member 4c Deceleration part (Deceleration part for stirring)
4d Stirring motor 4f Driving force transmission mechanism (stirring driving force transmission mechanism)
4g Driven bevel gear 4h Drive bevel gear 4k Transmission mechanism holding material 4m Transmission mechanism arrangement space 4p Recessed part 5 Weighing part 10 Powder granule supply device 20 Powder granule supply device 21, 21'Agitating / discharging motor 22 Driving force transmission Mechanism 22a Driven bevel gear 22c Driven bevel gear 22h Driven spur gear for stirring 22i Spur gear for driving 22j Input spur gear for discharge 22k Output spur gear for discharge 22p Transmission mechanism holding material 22q Transmission mechanism arrangement space 22r Depression part 23 Deceleration part ( Deceleration unit for stirring / discharging)
G1 Grease for lubricating oil for bevel gears G2 Grease for lubricating oil for spur gears

Claims (8)

The hopper where the powder and granules are put in, and
The discharge part that discharges the powder and granules, and the discharge part
A chute that guides the powder or granular material that has fallen from the hopper to the discharge section,
A stirring unit that stirs the powder or granular material by a stirring member that rotates inside the chute,
A measuring unit that is placed below the hopper, chute, and discharging unit and measures the powder or granular material while supporting them.
It is a powder and granular material supply device equipped with
The chute is formed with a circular inclined surface that is inclined so that the inner surface side thereof faces diagonally upward.
The stirring portion is for a shaft portion that penetrates the center of the inclined surface of the chute in an orthogonal posture, a stirring member that rotates in the chute about the shaft portion, and a stirring portion that generates a driving force for rotating the stirring member. It has a motor and a driving force transmission mechanism that transmits the driving force of the stirring motor to the shaft portion of the stirring member.
As the driving force transmission mechanism, a driven bevel gear attached to the shaft portion of the stirring member and having the same radial direction as the inclined surface is transmitted, and the driving force of the stirring motor is transmitted to the driven bevel gear. There is a drive bevel gear that meshes with the
The drive bevel gear and the driven bevel gear are arranged in a space below the inclined surface of the chute between the measuring portion and the bevel gear transmission mechanism arrangement space whose circumference is covered by the transmission mechanism holding material. Beveled
The space where the bevel gear transmission mechanism is arranged is filled with grease for lubricating the bevel gear.
A recess for collecting lubricating grease is formed at a position facing the lower end of the driven bevel gear of the transmission mechanism holding material.
The recessed portion is formed by being recessed so as to face a portion facing the enlarged lower end portion of the driven bevel gear.
A powder or granular material supply device characterized by. Drive spur gears and driven spur gears for transmitting rotational driving force to the screw provided in the discharge section in the spur gear transmission mechanism arrangement space below the inclined surface of the chute, which is surrounded by the transmission mechanism holding material. Gears are placed,
The powder according to claim 1, wherein the spur gear lubrication grease is accumulated in the spur gear transmission mechanism arrangement space in a state where the spur gear lubrication grease is attached to the lower end portion of the drive spur gear. Granule feeder. The driven bevel gear is attached to a portion of the shaft portion of the stirring member that protrudes outward from the inclined surface of the chute.
The driven bevel gear has a shape that expands in the radial direction toward the side closer to the inclined surface of the chute.
The drive bevel gear is rotatable about an axis orthogonal to the shaft portion of the driven bevel gear, and is arranged so as to mesh with a tooth portion formed at an upper end portion of the driven bevel gear. Item 2. The powder or granular material supply device according to Item 1. The stirring motor is a dedicated stirring motor for exclusively rotating the stirring member.
The powder or granular material supply device according to claim 3, wherein the rotational driving force of the stirring motor is transmitted to the driving bevel gear and the driven bevel gear. The driven bevel gear is attached to a portion of the shaft portion of the stirring member that protrudes outward from the inclined surface of the chute.
The driven bevel gear has a shape that expands in the radial direction toward the side away from the inclined surface of the chute.
Claim 1 or 2 is characterized in that the drive bevel gear is rotatable about an axis arranged in the lateral direction and is arranged so as to mesh with a tooth portion formed at an upper end portion of the driven bevel gear. The powder or granular material supply device according to. The stirring motor is a stirring / discharging motor for rotating both the stirring member and the screw provided in the discharging portion.
The powder or granular material supply device according to claim 1, 2, or 5, wherein the rotational driving force of the stirring / discharging motor is transmitted to the driving bevel gear and the driven bevel gear. 6. The described powder or granular material supply device. The drive spur gear is placed below or diagonally below the driven spur gear for stirring.
The rotary shaft to which the drive spur gear is attached is extended rearward, and both the stirring member and the screw provided in the discharge portion are rotated above the rear extension portion of the rotary shaft of the drive spur gear. The powder or granular material supply device according to claim 7, wherein a stirring / discharging motor for the purpose is arranged.

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