JPH0729072B2 - Backpack type power duster - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is distributed fertilizer, grain, flour, etc.
It relates to backpack dusters of fabric, more particularly, to an improvement of the shutter device of the tank discharge port.

[0002]

BACKGROUND OF THE INVENTION In this type of conventional backpack dusting machine, work
A person drives a blower by an engine while a person carries the machine on his back, and the wind causes the powder in the tank to be discharged from the tank discharge port to scatter.

[0003]

In the conventional backpack type dusting machine , the shutter provided at the tank discharge port is rotated to open and close the tank discharge port, and the discharge amount of powder is adjusted to some extent depending on the rotation angle of the shutter. Therefore, there is a problem that the dusting work is restricted because the adjustment range is somewhat small and a small amount of dust cannot be spread within a predetermined area.

[0004] The present invention has been made to solve such problems, some adjustment range is increased extensive dusting tasks performed backpack by allowing adjustment of the discharge amount by the magnitude shutter Aim to get a duster.

Further , according to the present invention, the drive shafts for opening and closing the large and small shutters are laid horizontally on a line substantially parallel to the backpack surface of the backpack frame, and wind enters from the side when the large and small shutters are opened and closed. The wind flow can be taken in stably, stable discharge can be obtained, and even if the whole is shaken with the backpack frame to the left or right, the powder flow is not uneven and uneven discharge does not occur. Aim to get the opportunity.

[0006]

A backpack-type power dusting machine according to the present invention includes a blower installed on a backpack frame and a fan shaft of which is located on a line substantially orthogonal to the backpack plane, and a fan connected above the blower. A tank having its tank discharge port communicating with the inside of the blower, and an engine driving the fan shaft arranged in parallel on the opposite side to the backpack side of the blower,
And, in the one in which the powder in the tank is sent from the tank discharge port to the spray pipe by the wind of the blower and is sprayed, the powder is rotated by a drive shaft that is laid horizontally on a line substantially parallel to the back surface, and A large shutter that opens and closes the tank discharge port, and a plurality of shutters that are opened and closed with respect to the opening formed in the large shutter and that rotate in the same direction as the large shutter but that are simultaneously or individually opened and closed with the large shutter. It is equipped with a small shutter.

[0007]

In the present invention, the large and small shutters increase the range in which the discharge amount is adjusted to some extent, and a small amount of powder can be dispersed within a predetermined area.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall front view showing a partially broken view, FIG. 2 is an enlarged view showing a broken part of FIG. 1, and FIG. 3 is a line III- of FIG.
III is a sectional view, FIG. 4 is a sectional view taken along line IV-IV of FIG.
FIG. 5 is an axial sectional view showing the axial structure of the shutter of FIG.
FIG. 6 is a view of FIG. 5 viewed from the left.

In the figure, reference numeral 1 denotes a backpack frame, which has a well-known structure, which is not shown in the figure, is L-shaped when viewed from the side, and has a vertical portion as a backpack surface for an operator to carry. A blower 2 is fixed on the backpack frame 1, and is arranged such that its fan shaft (not shown) is located on a line substantially orthogonal to the backpack surface of the backpack frame 1. Reference numeral 3 denotes a tank continuously provided above the blower 2, and a tank discharge port 3a thereof communicates with the inside of the blower 2. Reference numeral 4 denotes an engine that is installed in parallel on the side opposite to the backpack side of the blower 2 and drives the fan shaft of the blower 2. Reference numeral 5 is a large shutter for opening and closing the tank discharge port 3a, and 6 is a pipe to which the large shutter 5 is attached by means of screws 7, which serves as a rotary shaft for opening and closing the large shutter 5. Reference numeral 8 is an opening formed in the large shutter 5, 9 is a small shutter that opens and closes the opening 8, and 10 is a drive shaft to which the small shutter 9 is attached by screws 11, which are fitted to the pipe 6 so as to rotate relative to each other. . Reference numeral 12 is a bearing hole that rotatably supports the tip of the drive shaft 10, 13 is a bearing hole that rotatably supports the middle portion of the pipe 6, 14 is an O-ring fitted to the outer periphery of the drive shaft 10, and 15 is the drive shaft. An annular groove formed on the outer periphery of the screw 10 causes the tip of the screw 7 to be fitted therein and swivel. Reference numeral 16 is a lock screw attached to the base end of the pipe 6, and the tip of the lock screw is engaged with the outer peripheral recess 17 of the drive shaft 10 to lock the pipe 6 on the drive shaft 10. Reference numeral 18 is an arm provided at the base end of the drive shaft 10 protruding from the base end of the pipe 6, and 19 is an arm 18
A rod 20 for rotating the drive shaft 10 via 20 and a spring 20 for urging the pipe 6 to rotate in the direction in which the large shutter 5 is always closed are mounted across the lock screw 16 and the arm 18.

[0010] Now, setting the shutter lever (not shown) in the closed position, the drive shaft 10 via the rod 19 and the arms 18 are set to the initial position, the tank discharge port magnitude shutter 5,9 is closed 3a closes.

When the lock screws 16 are tightened and the recesses 17 are engaged as shown in FIG. 5 with the large and small shutters 5 and 9 closed as described above, the pipe 6 is integrated with the drive shaft 10, so that the large and small shutters are integrated. 5 and 9 are also integrated so that only the opening 8 does not open independently as shown in FIG. Therefore,
The rotation angle of the drive shaft 10 by the shutter lever becomes the opening / closing angle of the large shutter 5 as it is, and the large shutter 5 is opened as shown in FIG. In this way, if the discharge amount is adjusted slightly by adjusting the opening / closing angle of the large shutter 5,
It can be adjusted in the range of 20 Kg / min to 300 g / min as in the conventional case.

[0012] Then, with the magnitude shutter 5,9 is closed and is detached from the recess 17 by loosening the lock screw 16, the pipe 6 is a tank large shutter 5 by rotational biasing force of the spring 20 divided from the drive shaft 10 Discharge port 3a
And the tank discharge port 3a is closed. Therefore, the rotation angle of the drive shaft 10 by the shutter lever becomes the opening / closing angle of only the small shutter 9, and the small shutter 9 is opened as shown in FIG. Thus, if the discharge amount is slightly adjusted by adjusting the opening / closing angle of the small shutter 9, the opening / closing angle of the large shutter 5 is not 300 g / min or more.
Since it can be adjusted up to the range of 20 g / min, a small amount of powder can be dispersed within a predetermined area.

After the opening and closing angles of the large and small shutters 5 and 9 are adjusted in this way to adjust the discharge amount to some extent, when the worker moves while carrying the backpack frame 1 on his back, the wind from the blower 2 causes the inside of the tank 3 to move. The powder is sent from the tank discharge port 3a to a spray pipe (not shown) and sprayed.

As shown in the above embodiment, the drive shaft 10 for opening and closing the large and small shutters 5, 9 and the pipe 6 are connected to the backpack frame 1.
If it is laid on a line that is substantially parallel to the backpack surface, the wind from the blower 2 will enter from the bypass passage 2a from the side with respect to the opening and closing of the large and small shutters 5 and 9, so that the tank discharge port 3a A constant flow of wind can be taken in stably, and stable discharge can be obtained. Also, when the wind enters from the side with respect to the opening and closing of the large and small shutters 5 and 9, the backpack frame 1 and Even if the whole body sways to the left and right and tilts, the powder flow is uniform and the discharge unevenness does not occur without being affected by the tilt directions of the large and small shutters 5 and 9.

Further , as shown in the above embodiment, the drive shaft 10
When the pipe 6 and the pipe 6 are laid horizontally on a line substantially parallel to the backpack surface of the backpack frame 1, a plurality of small shutters 9 can be arranged in parallel along the drive shaft 10, so that the distance between the opening 8 and the tank 3 wall. Can be set to be shorter, and the powder is less likely to remain in the tank 3 accordingly.

[0016]

As described above, according to the present invention, since the discharge amount is adjusted by the large and small shutters, the adjustment range is enlarged to some extent and a wide range of dusting work can be performed.

Further , according to the present invention, the drive shafts for opening and closing the large and small shutters are laid horizontally on a line substantially parallel to the backpack surface of the backpack frame, and wind enters from the side when the large and small shutters are opened and closed. The effect that a constant wind flow can be taken in stably, stable discharge can be obtained, and even if the whole with the backpack frame shakes and tilts to the left and right, the powder flow is not uneven and discharge unevenness does not occur. Is obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is an enlarged view showing a broken portion of FIG.

3 is a cross-sectional view taken along the line III-III in FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is an axial sectional view showing an axial structure of the shutter of FIG.

FIG. 6 is a diagram of FIG. 5 viewed from the left.

[Explanation of symbols]

 1 backpack frame 2 blower 3 tank 3a tank discharge port 4 engine 5 large shutter 6 pipe 8 opening 9 small shutter 10 drive shaft 16 lock screw 20 spring

Claims (3)

[Claims] 1. A blower installed on a backpack frame, the fan shaft of which is located on a line substantially orthogonal to the backpack surface, and a tank which is connected above the blower and whose tank discharge port communicates with the inside of the blower. And an engine driving the fan shaft arranged in parallel on the opposite side to the backpack side of the blower, and the air in the blower blows powder in the tank from the tank discharge port to the spray pipe. In a backpack-type power dusting machine that is sprayed by means of a large shutter that opens and closes the tank discharge port by being rotated by a drive shaft that is laid on a line that is substantially parallel to the backpack surface, and an opening formed in this large shutter. A backpack type power disperser comprising a plurality of small shutters that open and close with respect to each other and that rotate in the same direction as the large shutter but that opens and closes simultaneously or individually with the large shutter. Machine. 2. A small shutter is attached to a drive shaft, a large shutter is attached to a pipe rotatably inserted in the drive shaft, and the pipe can be freely locked to the drive shaft by a lock screw. Claim 1
The backpack type power duster described. 3. A spring for urging the pipe to rotate so that the large shutter is always closed.
The backpack type power duster described.