JPH0446552Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a powder injection device that injects and disperses a powder such as a powdered insecticide into a spraying area such as a tatami mat.

[Conventional technology]

Conventional injection equipment that injects insecticides to exterminate pests that occur on tatami mats, etc.
Publication No. 43566, Publication No. 60-203129, and Publication No. 43566
61-285919, etc.), a manual or powered sprayer is used, a nozzle part is inserted into the tatami mat, and a liquid or gaseous medicine is injected into the tatami mat from the tip of the nozzle part.

In the prior art, there is no powder injection device that can inject solid (generally powdered) insecticides into tatami mats or the like.

[The problem that the idea aims to solve]

If the medicine to be injected is a liquid, the tatami mats will become damp with the water content of the medicine solution, which may reduce the efficacy of the medicine and cause problems such as rotting and deterioration of the tatami mats. Alternatively, if the chemical solution evaporates and there is a large amount of the drug solution, it will fill the room and if a person stays in such a room for a long time, there is a risk of poisoning.

In addition, when gaseous medicine is used, diffusion within the tatami mat becomes insufficient, and the number of insertion points for the nozzle part needs to be significantly increased, making the work complicated. Gas fills the room and there is a risk of poisoning.

On the other hand, powdered insecticides that are harmless to humans and animals have already been developed and are highly safe.

The object of the invention of claim 1 is to provide a powder injection device that enables powder injection with excellent safety.

A further object of the invention of claim 2 is to enable the injection amount of powder to be easily adjusted in the powder injection device of claim 1.

[Means to solve the problem]

This invention will be explained using reference numerals in the drawings that correspond to the embodiments.

The powder injection device according to the first aspect has the following components (a) to (d).

(a) Powder tank 26 for storing powder (b) Provided at the tip of the first pipe section 20 to transfer the powder in the powder tank 26 to the second pipe section 22 by air blown from the first pipe section 20 Ejector 2 to send out
4 (c) An insert portion 32 that is connected to the tip of the second tube portion 22 and spouts the powder from the second tube portion 22 from the nozzle 34. (d) Introduction of pressurized air into the first tube portion 20 A manual on-off valve 68 for controlling the powder injection device further includes a discharge amount adjusting section 46 for controlling the flow cross-sectional area between the ejector 24 and the atmospheric space.

[Effect]

In the invention of claim 1, when injecting the powder, the insertion part 32 is inserted into the injection location, and then the manual opening/closing valve 68 is opened by manual operation. As a result, the pressurized air is guided to the ejector 24 via the first pipe section 20, and in the ejector 24, negative pressure is generated by air jetting due to the introduction of the pressurized air from the first pipe section 20. . The powder in the powder tank 26 is sucked from the powder tank 26 to the ejector 24 by the negative pressure of the ejector 24, is conveyed by pressurized air from the first pipe section 20, and passes through the second pipe section 22 to the insertion section 32. and is ejected from the nozzle 34.

When the manual on-off valve 68 is closed, the first pipe section 20
The introduction of pressurized air to the ejector 24 is stopped, the negative pressure in the ejector 24 disappears, and the nozzle 34 of the insertion part 32
The ejection of powder from the tank will also be stopped.

In the second aspect of the present invention, the negative pressure of the ejector 24 is released to the atmospheric space by operating the discharge amount adjusting section 46. As a result, the ejector 2 is removed from the powder tank 26.
The suction force of the powder to the powder agent 4 increases or decreases, and the amount of powder discharged from the nozzle 34 of the insertion portion 32 changes.

〔Example〕

This invention will be described below with reference to embodiments shown in the drawings.

FIG. 5 is a diagram showing a work situation in which pests are exterminated on the tatami mat 10 using a powder injection device. The powder injection device is held by the worker 12 and is placed on the tatami mat 10.
The compressor 18 includes a syringe 14 for injecting pressurized air into the syringe 14, and a compressor 18 for pumping pressurized air to the syringe 14 via an air hose 16.

FIG. 1 is a detailed structural diagram of the syringe 14. The first pipe 20 and the second pipe 22 are arranged in a straight line, and the ejector 24 connects the first pipe 20 and the second pipe 22 to each other. The powder tank 26 includes a main body 28 whose lower center is fixed to the ejector 24 and stores a powdered insecticide, and a first pipe 2.
The lid 30 is fitted onto the first pipe 20 so as to be slidable in the axial direction of the main body 28, and is opened when the powdered insecticide is introduced into the main body 28. The injection needle 32 has an upper end fixed to the lower end of the second pipe 22, and has a plurality of nozzles 34 at appropriate intervals in the circumferential direction at its tip. The compression coil spring 36 extends slightly longer than the injection needle 32 so as to surround the injection needle 32 at the center, and its upper end is fixed to the lower end of the second pipe 22 to protect the injection needle 32. The T-shaped handle 38 is attached to the upper end of the first pipe 20, and one end of the upper part is attached to the air hose 16 (the fifth
It has a pressurized air inlet 40 connected to the air conditioner (see Fig.). The operating lever 42 is swingably attached to the side of the handle 38, and the bracket 44 is rotatably connected to the operating lever 42 at its lower end and moves up and down as the operating lever 42 swings. The discharge amount adjustment knob 46 is fixedly provided on the top surface of the lid 30 and controls the amount of air introduced into the air introduction pipe 48 from atmospheric air. The air introduction pipe 48 extends inside the main body 28 and connects the discharge amount adjustment knob 46 and the ejector 24 .

FIG. 2 is a detailed cross-sectional view of the ejector 24.
The ejector 24 has a pipe section 50 in the center, and the upper end of the second pipe 22 is screwed onto the lower end of the pipe section 50. The main body 28 of the powder tank 26 is penetrated by a pipe section 50 at the center of the lower part thereof, and is fastened and fixed to the stepped section of the pipe section 50 by a tank fixing nut 52. The packing 54 is sandwiched between the main body 28 and the stepped portion of the tube portion 50, and seals the penetration portion of the tube portion 50 in the main body 28. The connecting portion 56 is fixed to the upper end of the tube portion 50 and is screwed onto the lower end of the first pipe 20. Nozzle 5
8 is fixed to the lower end of the connecting part 56 so as to protrude into the pipe part 50 above the bench lily part of the pipe part 50. The through hole 60 is formed in the peripheral wall of the tube portion 50 at a position facing the tip of the nozzle 58,
The inside of the main body 28 and the inside of the tube portion 50 are communicated with each other. Branch 6
2 has a pipe portion 50 at a position facing the through hole 60.
, and an air introduction pipe 48 is connected at the upper end.

FIG. 3 is a detailed view of the half of the handle 38 on the pressurized air inlet 40 side. The operating lever 42 is rotatably supported at one end by the handle 38 by a pivot 64, and the pressurized air passage 66 is connected to the handle 38.
The pressurized air inlet 40 is formed in the first pipe 20 and communicates with the upper end of the first pipe 20 .

FIG. 4 is a vertical cross-sectional view of the center of the handle 38. The on-off valve 68 includes a valve seat 70 fixed to the upper end of the first pipe 20, and a valve body 72 loosely fitted in the vertical portion of the pressurized air passage 66 above the valve seat 70 so as to be able to move up and down. have. Valve body 7
The upper end of the handle 38 is exposed above the handle 38 and is connected to the upper side of the bracket 44 by a bolt 74. A plug 76 is attached to a penetration portion of the valve body 72 at the upper end of the handle 38 to prevent pressurized air from leaking from the pressurized air passage 66. The compression coil spring 78 is compressed between the middle flange portion of the valve body 72 and the lower surface of the plug 76, and is compressed between the valve body 72 and the lower surface of the plug 76.
2 toward the valve seat 70.

In FIGS. 3 and 4, when the free end side of the operating lever 42 is swung upward by the operation of the operator 12, the bracket 44 and the valve body 72 rise.
The on-off valve 68 opens the pressurized air passage 66 . Moreover, when the operating force on the free end side of the operating lever 42 is released,
The valve body 72 is lowered by the biasing force of the compression coil spring 78, and the on-off valve 68 closes the pressurized air passage 66.

The operation of the embodiment will be explained.

When injecting a powdered insecticide, as shown in FIG.
carries the syringe 14 with him and moves to the injection site of the powdered insecticide. The worker 12 uses the compression coil spring 3
6, the injection needle 32 is inserted into the tatami mat 10 or between the tatami mats 10, and then the operation lever 42 is operated to open the on-off valve 68 in the handle 38. As a result, the pressurized air passage 66
opens, and the pressurized air from the compressor 18 flows through the pressurized air inlet 40 of the handle 38 and the pressurized air passage 6.
6 and the first pipe 20 to the ejector 24, and is ejected from the tip of the nozzle 58. Nozzle 5
8, a negative pressure is generated at the tip side of the nozzle 58, and the powdered insecticide in the powder tank 26 is sucked by the negative pressure of the ejector 24 and released from the through hole 60 into the pipe section 50. introduced into the world. Thereafter, the powder tank 26 is conveyed by pressurized air from the nozzle 58, is forced to the injection needle 32 via the second pipe 22, and is ejected from the nozzle 34. If the insertion point of the injection needle 32 is between the tatami mats 10, the powdered insecticide ejected from the nozzle 34 will spread widely to the back side of the tatami mats 10, and the tatami mats 10 will be raised to inject the medicine. You can get the same effect as when spraying.

When the operating force of the operating lever 42 is released, the pressurized air passage 66 is closed by the on-off valve 68, the jetting of air from the nozzle 58 is stopped, and the ejector 2
The negative pressure at 4 disappears, and the nozzle 34 of the injection needle 32
The spraying of powdered insecticide from the ground will also be discontinued.

When adjusting the amount of powdered insecticide ejected from the nozzle 34, the ejection amount adjustment knob 46 is rotated to control the air flow cross-sectional area between the atmospheric space and the air introduction pipe 48. As a result, the nozzle 5 of the ejector 24 escapes into the atmospheric space via the air introduction pipe 48.
The negative pressure on the tip side of the injection needle 8 is adjusted appropriately, and this negative pressure increases or decreases the suction force of the powdered insecticide from the powder tank 26 to the ejector 24, and the powdered insecticide is discharged from the nozzle 34 of the injection needle 32. The amount changes.

[Effect of idea]

In the invention of claim 1, the powder can be ejected from the nozzle of the insertion part by using the ejector. Powder agents have already been developed with excellent safety, and can prevent the generation of harmful gases. It is possible to prevent adverse effects such as oxidation and a decrease in drug efficacy. Furthermore, since powder agents have better dispersibility than liquid or gaseous dispersants, the number of injections per given area can be reduced and work efficiency can be improved.

According to the invention of claim 1, the power unit that generates pressurized air is separated, and the worker can carry only the lightweight and compact part that does not include the power unit, which reduces labor. can.

In the second aspect of the present invention, the negative pressure of the ejector is released to the atmospheric space to change the suction force of the powder in the ejector, thereby easily adjusting the amount of powder to be discharged.

[Brief explanation of the drawing]

The drawings relate to an embodiment of the invention, and FIG. 1 is a detailed structural view of the injector, FIG. 2 is a detailed sectional view of the ejector, and FIG. 3 is a detailed view of the pressurized air inlet side half of the handle. FIG. 4 is a vertical sectional view of the center of the handle, and FIG. 5 is a diagram showing a working situation in which pests are exterminated on tatami mats using a powder injection device. 14... Injector, 20... First pipe (first
pipe part), 22... second pipe (second pipe part),
24...Ejector, 26...Powder tank, 32...
... Injection needle (insertion part), 34 ... Spout, 46 ...
...Discharge amount adjustment knob (discharge amount adjustment section), 68...
On-off valve (manual on-off valve).

Claims (1)

[Claims for Utility Model Registration] (1) A powder agent tank 26 for storing a powder agent, and the first tube portion 20 provided at the tip of the first tube portion 20.
an ejector 24 that sends out the powder in the powder tank 26 to the second pipe section 22 by air blown from the ejector 24;
, an insertion part 32 that is coupled to the tip of the second pipe part 22 and spouts the powder from the second pipe part 22 from the nozzle 34; and an insertion part 32 for introducing pressurized air into the first pipe part 20. Manual on-off valve 68 to control
A powder injection device comprising: (2) The powder injection device according to claim 1, further comprising a discharge amount adjusting section 46 that controls a flow cross-sectional area between the ejector 24 and the atmospheric space.