JP2013091027A - Ventilation system chemicals sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve dustproof capacity of a ventilation system chemicals sprayer.SOLUTION: In the ventilation system chemicals sprayer 1 which sprays the chemicals in a tank 6 by mixing it with an air flow of a blower 3, an air inlet 41 of the blower 3 faces a rear surface of a frame carried on a back at some space, the tank 6 is arranged above the space between the blower 3 and the frame carried on a back and a dustproof cover 11 extending downward from the tank 6 covers the space between the blower 3 and the frame carried on a back.

Description

  The present invention relates to a blower-type drug spreader that mixes a drug such as liquid or powder with the airflow of a blower and sprays it from the tip.

  There is known a medicine spreader in which a medicine is placed in a tank and mixed with an air flow of a blower and spread (for example, Patent Document 1).

US2009 / 0008473 A1 (US2009 / 0008473 A1)

By the way, in the conventional blowing type chemical spreader, the blower and the engine are arranged behind the back support frame, and the tank is placed on the blower.
However, in the blower type chemical spreader having such a structure, dead leaves, dust, and the like may be clogged at the intake port of the blower. In particular, branches and dead leaves are likely to fall from the upper side of the blower and block the intake port.
A blower that has blocked the air intake can no longer send an air flow and cannot spray the medicine. In addition, the rotational load decreases, the engine speed increases, and the device is damaged.

  Thus, in the blower type chemical spreader, it is required to improve the dustproof ability against dead leaves, dust and the like so that the blower cannot suck air.

  The blower type chemical spreader of the present invention is a blower type chemical spreader that mixes and spreads the chemicals in the tank with the air flow of the blower, and the air inlet of the blower faces the back of the back frame with a gap. The tank is disposed above the gap between the blower and the back frame, and covers the gap between the blower and the back frame with a dust-proof cover extending downward from the tank.

  Preferably, the dust cover may be attached to a frame attached to the tank.

  Preferably, the tank is formed integrally with the upper tank portion disposed above the gap between the blower and the back frame, and is formed integrally with the upper tank portion. A lower tank portion that opposes, covers the front side and the upper side of the blower by opening a gap, and forms the gap between the upper and side portions of the blower and the tank, which are formed on the side surface and the rear surface of the blower-type medicine spreader, You may cover with the dust cover attached to the tank.

  Preferably, the dust cover may be integrally formed with a flat plate member having flexibility.

  Preferably, the blower may be attached to the frame attached to the tank by a suspension structure.

In the present invention, since the tank is disposed above the gap between the blower and the backpack frame, even if branches or dead leaves fall from above, the intake port is protected by the tank.
In addition, since the dustproof cover extends downward from the tank, falling branches and dead leaves hardly adhere to the dustproof cover.
Therefore, it is possible to improve the dust-proof ability of the blower type chemical spreader against dead leaves, dust, etc. so that the blower does not suck air.

FIG. 1 is a perspective view of an air blowing type chemical spreader according to an embodiment of the present invention. FIG. 2 is a diagram for explaining the main functions of the blower type chemical liquid spreader of FIG. FIG. 3 is a view showing a state in which a dustproof cover is removed from the apparatus main body of the blower type chemical sprayer of FIG. FIG. 4 is a view showing the dome-shaped inlet cover of FIG. FIG. 5 is a front view of the dustproof cover in a state where it is removed from the blower-type chemical solution spreader 1. FIG. 6 is a rear view of the blower type chemical sprayer with the dust cover shown in FIG. 5 attached.

FIG. 1 is a perspective view of a blower type chemical sprayer 1 according to an embodiment of the present invention. In addition to this, there is an air blowing type dusting machine for spraying powder and granular fertilizer.
FIG. 2 is a diagram for explaining the main functions of the blower type chemical liquid spreader 1 of FIG.
1 has an engine 2, a blower 3, a blower pipe 4, a pressurization pipe 5, a tank 6, a supply pipe 7, and a mixing unit 8.
The operator carries the blower-type chemical solution spreader 1 and uses the blower pipe 4.
The chemical solution stored in the tank 6 is mixed with the air flow in the blower pipe 4 to be atomized, blown out from the blower pipe 4 together with the air flow, and sprayed on farmland or the like.

The tank 6, the blower 3, and the engine 2 are fixed to the frame 9 of the blower type chemical sprayer 1. Thereby, the apparatus main body 10 as a backpack frame used on the back is constituted.
The frame 9 has a shape in which metal tubes are assembled into a rectangular frame shape, and the upper and lower portions of the rectangle are bent in the same direction (back side). A side part is formed between the upper part and the lower part.
The apparatus main body 10 can be placed on the ground by the lower part of the frame 9.
The apparatus main body 10 can be lifted by holding the upper part of the frame 9 by hand.

The tank 6 is a chemical solution container made of, for example, a plastic material.
FIG. 3 is a view showing a state in which the dust cover 11 is removed from the apparatus main body 10 of the blower type chemical sprayer 1 of FIG.
3 includes a box-shaped upper tank portion 21 and a lower tank portion 22 integrally formed in a thin plate shape below the upper tank portion 21. The upper tank portion 21 and the lower tank portion 22 communicate with each other to constitute one storage container.
The side surface on the front side of the upper tank portion 21 and the side surface on the front side of the lower tank portion 22 are formed to be flush with each other and form a back support surface 23. Thus, the tank 6 functions as a backpack frame. A back support member 31 and two shoulder belts 32 are disposed on the back support surface 23. An operator puts his arm on the shoulder belt 32 and carries the blower-type chemical sprayer 1 on the back in a state where the back support member 31 of the back support surface 23 hits the back.
The thin plate-shaped lower tank portion 22 is formed so as to extend downward from the bottom surface of the box-shaped upper tank portion 21.
A pair of rib portions 24 projecting in the left-right direction are provided upright at the center of both side surfaces of the lower tank portion 22. The rib portion 24 extends in the vertical direction on both side surfaces of the lower tank portion 22.
A tank cap 26 is detachably attached to the upper surface of the upper tank portion 21 with respect to the chemical solution inlet 25. The tank cap 26 is opened, and the chemical solution is poured from the inlet 25 of the tank 6. The tank cap 26 is closed and the tank 6 is sealed. The sealed tank 6 can be pressurized by the air flow of the blower 3.

The blower 3 and the engine 2 generate an air flow. A motor may be used instead of the engine 2. The engine 2 drives the blower 3 to rotate. The driven blower 3 sucks outside air from the intake port 41 with a built-in fan, and generates an air flow.
The blower 3 and the engine 2 are disposed below the frame 9. The blower 3 and the engine 2 are accommodated between the upper part and the lower part of the frame 9.
For example, the blower 3 is fixed to the lower part of the frame 9 by a spring suspension 51. The engine 2 is fixed to the back side of the blower 3.
With such a support structure, the vibration of the engine 2 is hardly transmitted to the frame 9 through the blower 3 while the blower 3 and the engine 2 are firmly fixed to the tank 6. It can position so that the clearance gap between the dust-proof cover 11 attached to the tank 6 and the air blower 3 may become minimum necessary.
The blower 3 is fixed to the lower portion of the frame 9 in such a direction that the intake port 41 is on the tank 6 side (front side). The air inlet 41 on the front surface of the blower 3 can be positioned at a position facing the lower tank portion 22 constituting the back surface portion of the backpack frame. The blower 3 sucks air from the gap between the tank 6 and the blower 3.

A dome-shaped inlet cover 61 is attached to the inlet 41 of the blower 3.
FIG. 4 is a view showing the dome-shaped inlet cover 61 of FIG.
FIG. 4A is a front view of the air inlet cover 61. FIG. 4B is a side view of the air inlet cover 61.
The dome-shaped inlet cover 61 includes a cover main body 62 having a convex spherical shape and a large number of slits 63 formed in the cover main body.
The cover main body 62 is attached to the blower 3 so as to cover the entire intake port 41 and protrudes toward the tank 6 (front side).
The dome-shaped inlet cover 61 includes a partition plate 64. The partition plate 64 extends over the entire width from the right end to the left end of the dome-shaped intake port cover 61. The partition plate 64 is integrally formed at a position below the center of the dome-shaped intake port cover 61. As shown in FIG. 3, the partition plate 64 partitions the intake port 41 into a central part, an upper part, and a lower part. The dead leaves and dust sucked from the lower side of the air inlet cover 61 are difficult to reach the central portion.
Note that the partition plate 64 may be provided at a lower portion of the air inlet 41 of the blower 3.

The blower pipe 4 discharges an air flow and is connected to the blower 3. The air flow of the blower 3 is discharged from the tip of the blower pipe 4 to the outside.
The blower tube 4 has a bellows tube portion 71 and a handle 72.
The blower tube 4 can be bent by the bellows tube portion 71. The operator can adjust the direction of the blower tube 4 by operating the handle 72 and bending the bellows tube portion 71 in a state where the blower type chemical liquid spreader 1 is carried.
In place of the bellows tube portion 71, for example, a flexible vinyl tube may be used.

The pressure tube 5 is connected between the blower 3 and the tank 6. A part of the air flow of the blower 3 is introduced into the tank 6 through the pressure pipe 5. The tank 6 is pressurized by this air flow.
The tip of the pressurizing pipe 5 extends into the tank 6 and is connected to a jet part 81 having a built-in check valve. Air is discharged into the tank 6 from the ejection part 81. The chemical solution in the tank 6 is agitated by the released air bubbles.

The supply pipe 7 supplies the chemical solution in the tank 6 to the blower pipe 4 and is connected between the tank 6 and the mixing unit 8.
The supply pipe 7 is connected to a supply port 27 formed at the bottom of the tank 6. A strainer (not shown) integrated with the supply pipe 7 protrudes into the supply port 27 of the tank 6 into the tank 6.
An opening / closing valve 91 is provided in the middle of the supply pipe 7. The on-off valve 91 is fixed to the side of the handle 72.

The mixing unit 8 mixes the chemical with the airflow of the blower tube 4 and is disposed at the tip of the blower tube 4.
As shown in FIG. 2, the mixing unit 8 includes a throttle unit 101. The throttle unit 101 exhibits a venturi effect with respect to the supplied air flow. The tip of the nozzle 102 connected to the other end of the supply pipe 7 is disposed on the upstream side of the throttle unit 101.
The chemical solution supplied from the pressurized tank 6 is discharged from the nozzle 102 and becomes a mist at the throttle unit 101. The atomized chemical liquid is discharged from the tip of the blower tube 4 by the airflow of the blower tube 4.

At the time of use, the operator carries the blower type chemical solution spreader 1 in which the chemical solution is put in the tank 6 and holds the handle 72. The operator opens the cock of the on-off valve 91 and operates the operation lever of the handle 72 to operate the engine 2 and the blower 3. Thereby, the mist-ized chemical | medical solution blows off from the front-end | tip of the ventilation pipe | tube 4. As shown in FIG. The operator can adjust the direction of the blower pipe 4 to spray the chemical liquid on a desired land.
At the time of storage, the operator places the blown chemical solution spreader 1 on the floor. Further, the cock of the on-off valve 91 is closed. Thereby, the chemical | medical solution of the tank 6 does not leak out. As shown in FIG. 1, the chemical solution in the tank 6 does not leak from the nozzle 102 even when the blower pipe 4 is placed on the floor.
During storage or transportation, the blower tube 4 may be bent and the handle 72 may be hung on an annular strap 111 fixed to the upper part of the frame 9, for example. Thereby, the air pipe 4 can be stood up and the nozzle 102 of the mixing part 8 can be located above the tank 6. FIG. Even if the cock of the on-off valve 91 is forgotten to close, the chemical liquid in the tank 6 does not leak.

FIG. 5 is a front view of the dust-proof cover 11 in a state where the dust-proof cover 11 is removed from the blower-type chemical liquid spreader 1.
FIG. 6 is a rear view of the blower type chemical sprayer 1 with the dust cover 11 of FIG. 5 attached.

As shown in FIG. 5, the dust cover 11 has a flat plate shape and includes a central surface portion 121 and a pair of side surface portions 122.
A plurality of slits 123 are formed in the central surface portion 121 and the pair of side surface portions 122 to ensure air permeability. Even if the dust-proof cover 11 is attached to the blower-type chemical liquid spreader 1, an air vent to the blower 3 can be secured.
Mounting holes 124 for fixing the dust cover 11 to the frame 9 are formed in two places at the upper part of the central surface part 121 and two places above and below each side part 122.
The dust cover 11 is formed on a single plate member by a flexible plastic material. Thereby, the dust cover 11 can be easily bent and attached. The dust cover 11 can be easily formed integrally. The dust cover 11 can be easily manufactured.
The dust cover 11 may be formed with a large number of holes instead of the slits 123 or may be formed in a mesh shape or a net shape as a whole.

As shown in FIGS. 1 and 6, the dust cover 11 is fixed to the frame 9 in a state where the pair of side surface portions 122 are bent forward with respect to the central surface portion 121.
The center surface portion 121 of the dust cover 11 is screwed to the upper portion of the frame 9 by two upper mounting holes 124. Each side part 122 is screwed to the upper part and the lower part of the frame 9 by two upper and lower mounting holes 124.
Then, as shown in FIG. 6, the dust-proof cover 11 covers the gap between the tank 6 (backpack frame) and the blower 3 by fixing the dust-proof cover 11 to the frame 9. The side surface portion 122 covers both side surfaces, and the central surface portion 121 covers the blower 3 and the upper tank portion 21 in the vertical direction. The dust-proof cover 11 overlaps the portion of the tank 6 that protrudes to the inside of the frame 9, and no gap is formed between them. The dust cover 11 can cover the gap between the tank 6 and the blower 3 so as not to leave an extra gap. Since there is no need to open an attachment hole in the tank 6, the dustproof cover 11 can be attached to the tank 6 without impairing the airtightness of the tank 6.
Further, after attaching the frame 9 to the tank 6, the dustproof cover 11 can be bent and attached to the outside of the frame 9. A dustproof cover 11 made of a single flexible plate member can be attached to the periphery of the tank 6 while being bent so as to cover the periphery of the tank 6.
A series of assembly is easy.

As described above, in the present embodiment, the air inlet 41 on the front surface of the blower 3 is sandwiched between the tank 6 (back frame), the front surface and the upper surface of the blower 3 are covered with the tank 6, and the blower 3 A gap between the upper and side portions of the tank and the tank 6 is covered with a dustproof cover 11. The lower tank portion 22 of the tank 6 constitutes the back portion of the backpack frame.
The dust cover 11 is attached to the frame 9 on the tank 6 side. In particular, the dust cover 11 is attached to the tank 6 with no gap using the frame 9.
Therefore, the dust-proof ability of the blower type chemical spreader 1 against dead leaves, dust, etc. can be improved so that the blower 3 does not suck air.
Moreover, even if the blower 3 vibrates, the dustproof cover 11 does not shake unlike the case where the dustproof cover 11 is mounted on the blower 3 side. It is possible to suppress the generation of abnormal noise when the dust cover 11 hits the tank 6 or the like. In order to suppress the occurrence of such abnormal noise, it is necessary to secure a gap between the dust cover 11 and the tank 6. By securing such an extra gap, The dustproof effect by the dustproof cover 11 will fall. In this embodiment, there is no such harmful effect.
Moreover, in this embodiment, since the tank 6 is arrange | positioned above the clearance gap between the air blower 3 and the tank 6 (backpack frame), even if a branch and dead leaves fall from the top, the inlet port 41 is protected by the tank 6 Is done.
In addition, since the dustproof cover 11 extends downward from the tank 6, falling branches and dead leaves hardly adhere to the dustproof cover 11.
Therefore, the dust-proof ability of the blower type chemical spreader 1 against dead leaves, dust, etc. can be improved so that the blower 3 does not suck air.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications or changes can be made without departing from the scope of the invention.
For example, in the above embodiment, the frame 9 is attached to the tank 6, and the dust cover 11 is attached to the frame 9. In addition, for example, the dust cover 11 may be directly attached to the tank 6.
In the above embodiment, the tank 6 includes the box-shaped upper tank portion 21 and the lower plate-shaped lower tank portion 22 on the lower side thereof. In addition to this, for example, the tank 6 may be configured only by a portion corresponding to the upper tank portion 21, and the backpack frame may be provided separately from the tank 6.

1 ... Blasting chemical sprayer (Blasting chemical sprayer)
3 ... Blower 6 ... Tank 9 ... Frame 10 ... System unit (backpack frame)
DESCRIPTION OF SYMBOLS 11 ... Dust-proof cover 21 ... Upper tank part 22 ... Lower tank part 24 ... Rib part 41 ... Intake port 61 ... Intake port cover 121 ... Central surface part 122 ... Side surface part 123 ... Slit (ventilation hole)

Claims (5)

A blower type chemical spreader that mixes and spreads the chemicals in the tank with the air flow of the blower,
The air inlet of the blower is opposed to the back of the back frame with a gap,
The tank is disposed above a gap between the blower and the backpack frame,
A blower type chemical spreader that covers a gap between the blower and the backpack with a dustproof cover extending downward from the tank. The blast type medicine spreader according to claim 1, wherein the dustproof cover is attached to a frame attached to the tank. The tank
An upper tank portion disposed above a gap between the blower and the backpack frame;
A lower tank part that is formed integrally with the upper tank part and constitutes the back part of the backpack frame and that opposes the air inlet of the blower;
Covering the front side and the upper side of the blower with a gap,
The blower type medicine sprayer according to claim 1, wherein gaps between the upper and side portions of the blower and the tank, which are formed on a side surface and a rear surface of the blower type medicine spreader, are covered with the dustproof cover attached to the tank. Machine. The blow type medicine spreader according to claim 1, wherein the dustproof cover is integrally formed with a flat plate member having flexibility. The blower type medicine spreader according to claim 2, wherein the blower is attached to the frame attached to the tank by a suspension structure.

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