JP3025725U - Agricultural liquid pressure injector - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a highly safe agricultural pressure injector which can reduce the human power and work time, is simple and convenient to use, and can directly inject a liquid agent into a tree trunk. SOLUTION: An opening is provided at the rear end of a cylindrical body that can be filled with a liquid agent, a valve hole 11 is opened at the front end, a hollow conduit 23 is fitted into the valve hole 11, and a jet nozzle 24 is attached to the front end of the conduit. Cylinder 1, a piston rod 4 that fixes a piston 42 to the front end and is slidably fitted into the cylinder 1, and the cylinder 1 and the piston rod 4 are elastically connected to pull the piston 42 forward. In combination with a plurality of elastic members 5 that move forward in the cylinder 1, the elastic member 5 moves the piston 42 and strongly ejects the liquid agent contained in the cylinder 1 from the ejection nozzle.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a liquid medicine pressure injector, and more particularly to an agricultural liquid medicine pressure injector that is easy and convenient to use for injecting pesticides such as sterilizing liquid agents or nutrient solutions into trees.

[0002]

[Prior art]

 When the sun shines, liquids such as water and nutrient solution sprayed on crops are immediately absorbed in the soil or evaporate.Therefore, it is necessary to ensure that crops are provided with the required water content, nutrients, or chemicals to prevent disease pollution. Therefore, a liquid pressure injector that directly injects water, nutrient solution, or drug solution into agricultural products has been used.

An agricultural liquid pressure injector previously developed by the present inventor as an example of this type of liquid pressure injector is, as shown in FIGS. 1 and 2, mainly a control valve 2 including a cylinder 10 and a through hole 20. And an inflator 3 having a rotary knob 31 in its middle part. The cylinder 10 is a hollow cylindrical body made of a plastic material, and has a valve hole 11 formed at its front end (lower end in FIGS. 1 and 2) and a screw along the shaft. A short front copper tube 12 having a hole is fitted therein. The cylinder 10 is formed with auxiliary ribs 13 extending rearward on both sides of the outer peripheral surface of the valve hole 11, and a bottle mouth 14 is provided at the rear end of the cylinder 10, and a screw along the axis is provided inside the bottle mouth 14. A short rear copper tube 15 having a hole is fitted therein, and further rib pieces 16 having outwardly extending outer ends of the bottle mouth 14 and provided with hanging holes at the ends are provided.

The control valve 2 is made of, for example, a metal material such as copper, and a screw is engraved on the outer peripheral surface of the rear end of the control valve 2 and a rubber packing 21 is externally fitted to the valve hole 11 at the front end of the cylinder 10. It is screwed into the front copper tube 12 which is fitted inside. Further, the rear end of the hollow conduit 23 is fitted to the front end of the control valve 2, and a jet nozzle 24 having a through hole having an axial center and a tapered front end is fitted to the front end of the conduit 23. There is.

The charging pipe 3 is formed by screwing a screw on the outer peripheral surface of the front end thereof, and a circular ring-shaped packing 32 is externally fitted to the rear copper pipe 15 which is fitted inside the bottle mouth 14 at the rear end of the cylinder 10. Is screwed on. At the rear end, an air inlet 30 is formed and a sleeve cap 33 is screwed and closed.

When operating the agricultural liquid pressure injector having the above-described structure, first, the control valve 2 is closed and then the inflating pipe 3 is opened to put an appropriate amount of the required liquid drug into the cylinder 10. After that, the air supply pipe 3 is tightly screwed again, the sleeve cap 33 is loosened, and the air is pumped into the cylinder 10 from the air supply port 30 to a predetermined pressure (about 4.2 to 5.6 Kg / cm ² ). Press in until After that, a rope or a wire is passed through the hanging hole of the rib piece 16 at the rear end of the cylinder 10 and is hung on the branch of the tree. Further, a hole is drilled in the trunk and the ejection nozzle 24 is inserted into the trunk to control. The valve 2 is opened, and the compressed air in the cylinder 10 allows the liquid agent to be injected and permeated into the plant body from the ejection nozzle 24 through the conduit 23.

[0007]

[Problems to be solved by the device]

 The agricultural liquid pressure injector is extremely effective in preventing diseases and pests, but when actually used, for example, first put the drug solution in the cylinder 10 and then inject air with an air pump or a tire pump. Therefore, if the number of liquid pressure injectors required is large, there is a problem in that labor is required due to heavy labor just to load the medicines or inject the air.

Further, unless the liquid agent is put in a fixed volume ratio, the solvent cannot be ejected from the ejection nozzle at a predetermined pressure with sufficient compressed air, but it is generally easy to control the ratio of the air and the liquid agent. Not. Moreover, if a large amount of liquid is to be charged, it is necessary to increase the volume of the cylinder, but the space inside the cylinder gradually increases in response to the ejection of the liquid inside the cylinder, and the pressure inside the cylinder gradually increases accordingly. Get smaller. Therefore, it is necessary to additionally pressurize air in order to eject at a predetermined pressure, which is troublesome and inconvenient in this respect.

Furthermore, during use, the liquid agent cannot be jetted under pressure unless the high-pressure air is held in the upper side and the liquid agent is suspended so as to be located in the lower side. Therefore, it cannot be placed horizontally or hung upside down. Normally, the cylinder is hung outdoors and exposed to rain wind and sunshine for a long period of time and weathered.If the material of the cylinder is bad, it will easily harden and become brittle, or cracks will occur at the periphery of the hole. Air leaks. Moreover, since the internal air is pressurized, it may be damaged. In order to prevent this phenomenon from occurring, it is necessary to increase the thickness of the cylinder or to form it with a relatively excellent material, which causes a problem of high manufacturing cost.

Generally, orchards are often located in mountainous areas away from homes, so when using a liquid pressure injector, most homes must be filled with liquid and air before being transported to the orchard. I hang them on trees one by one. Therefore, if care is not taken in the process of filling and transporting the liquid agent and air, there is a problem that the air leaks from the cylinder or the liquid agent is likely to be ejected due to the vibration or vibration of the vehicle. Moreover, when the liquid agent is exhausted, or when the entire amount of the drug is used, it is troublesome to newly supply the liquid agent and air at the site, especially when the orchard is in an area where power cannot be reached. This is extremely inconvenient because the pump cannot be used and air has to be pressed in manually by a tire pump.

In view of the above-mentioned problems in the conventional agricultural liquid pressure injecting device, the present invention reduces manpower and working time, and is easy and convenient to use, and at the same time, it is possible to directly inject the liquid drug into the trunk. The purpose is to provide a high agricultural pressure infusion device.

[0012]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention according to claim 1, wherein an opening is provided at a rear end of a cylindrical body having an internal hollow capable of storing a liquid agent, a valve hole is opened at a front end, and a hollow conduit is provided at the valve hole. A cylinder having a jet nozzle attached to the front end of the conduit, a piston rod provided with a piston at the front end and slidably inserted into the cylinder, and the cylinder and the piston rod are elastically connected. And a plurality of elastic members for pulling the piston forward to move the piston forward in the cylinder, wherein the elastic member moves the piston and ejects the liquid agent entering the cylinder by the ejection nozzle. Agricultural liquid pressure dispenser is available.

It is preferable that a slack valve is attached to the wall surface of the front end of the cylinder so that the piston rod can be easily extracted from the cylinder. (Claim 2)

In the agricultural liquid pressure injector having the above-described structure, first, the valve hole is closed to make the front end of the cylinder upside down, and then an appropriate amount of liquid is put in the cylinder and then the front end of the piston rod is opened at the rear end of the cylinder. Insert more and fit. Then, turn the cylinder upside down so that the valve hole is upright, and then open the valve hole and push the piston rod fixed to the piston into the cylinder to release the air inside the cylinder. Let out. After that, the control valve is closed again, and one end of the elastic members is attached to the front end of the bomb, and then these elastic members are stretched and the other end is hooked to the rear end of the piston rod. Then, a rope or wire is passed through the rear end of the cylinder and hung on the branches of the tree, and then a small hole is drilled in the trunk to tightly insert the jet nozzle. When the valve hole is opened in this state, the elastic return action of the elastic member causes the piston rod to move at a predetermined pressure and moves forward in the cylinder along the axial direction, causing the liquid in the cylinder to flow through the conduit. It can be pressed into the trunk from a jet nozzle.

When the liquid agent is used up, the ejection nozzle can be withdrawn from the trunk to remove the elastic member, and the piston can be withdrawn from the rear end of the cylinder to fill the liquid agent, whereby the liquid agent can be increased in pressure.

[0016]

[Embodiment of device]

 Hereinafter, the present invention will be specifically described with reference to an embodiment, but the present invention is not limited to this example. The same members as those in the conventional example are designated by the same reference numerals. FIG. 3 shows a comparatively preferred embodiment of the present invention. The agricultural liquid pressure injecting device of the present invention mainly comprises a cylinder 1, a piston rod 4, a plurality of elastic members 5, a control valve 2 and the like.

The cylinder 1 is an inner hollow cylindrical body formed of a plastic material for containing a liquid agent, and a front end (lower end in the drawing) of the cylinder 1 is converged forward to form a valve hole 11. ing. A pair of front fishing portions 130 are provided that extend outward from both front ends of the cylinder 1 and then curve forward. An auxiliary rib 13 is formed which extends obliquely rearward from the rear end surface of the front fishing portion 130 and is continuous with the outer peripheral wall of the cylinder 1.

Similar to the conventional example, the valve hole 11 is screwed into a control valve 2 having a rubber backing 21, and the control valve 2 is fitted into a hollow conduit 23 having a required length, so that the conduit 23 A jet nozzle 24 is attached to the front end.

The rear end of the cylinder 1 is an opening, and a pair of substantially diamond-shaped hanging portions 17 projecting outward are provided at the periphery of the opening, and holes 171 are provided at the relatively long projecting tip portions thereof. I'm sick.

The piston rod 4 is a rod-shaped body formed of a plastic material, and is fitted inside the cylinder 1. The middle part of the piston rod 4 is formed by extending a required length by a supporting frame 41 having a cross-shaped cross section. At the front end of the piston rod 4, a piston 42, which is a short columnar body made of a rubber material, is fixed, a conical portion 420 is provided at the front end of the piston 42, and the outer diameter of the piston 42 is exactly the above cylinder. It is set equal to the inner diameter of 1.

A disc 43 is formed at the rear end of the piston rod 4, and rear hooks 430 are provided on both sides of the disc 43 so as to project outward and then bend backward. These rear hooks 430 are made to correspond to both front hooks 130 of the cylinder 1, and auxiliary ribs 431 extending diagonally to the side surface of the support frame 41 are provided on the front side of each rear hook 430. ing.

The plurality of elastic members 5 are tension springs having a predetermined elasticity. One end of each of the elastic members 5 is attached to the front hook portion 130 of the cylinder, and the other end is inside the rear end opening of the cylinder 1. The piston rod 4 is hooked to the rear hook portion 430 of the mounted piston rod 4 to elastically connect the cylinder 1 and the piston rod 4 and at the same time, to urge the piston 42 to move forward.

Further, a slack valve 6 is attached to the wall surface of the front end of the cylinder 1. As shown in FIG. 6, the slack valve 6 is a pin-shaped body, and a disc-shaped pressing portion 61 that projects outward along the diameter is provided at the front end of the slack valve 6, and along the periphery of the back surface of the pressing portion 61. A plurality of convex portions 610 are formed. At the rear end of the slackening valve 6, a conical portion 62 is provided which spreads toward the distal end. The shaft portion 63 of the slack valve 6 is passed through the hole 19 provided in the tapered inner side wall of the front end of the bomber 1 with a gap C therebetween, and the conical portion 62 at the tip is formed into a conical concave portion continuous with the hole 19. The part 18 is closely fitted and fitted. When the pressing portion 61 is pressed, the conical portion 62 moves as shown by the alternate long and short dash line in FIG. 6, and a gap is created between the conical portion 62 and the concave portion 18, and the gap C, the concave portion 18 and the concave portion The atmosphere can be introduced into the inside of the cylinder 1 through the gap of the conical portion 62.

FIG. 4 and FIG. 5 show a usage state of the liquid agent injecting device having the above configuration. In use, first, the control valve 2 is closed to close the valve hole 11 at the front end of the cylinder 1. Next, the front end of the cylinder 1 is hung downward so that the rear end faces upward, an appropriate amount of liquid agent is put into the cylinder 1, and then the front end of the piston rod 4 is fitted into the rear end opening of the cylinder 1.

Next, the cylinder 1 is turned upside down, and the valve hole 11 is erected so as to face upward so that the air in the cylinder 1 is concentrated on the upper side. In this state, the control valve 2 is opened, and the piston rod 4 is appropriately pushed to escape the internal air, and then the control valve 2 is closed again.

After that, one end of each elastic member 5 is hooked to the front hook portion 130 at the front end of the cylinder 1, the elastic member 5 is stretched, and the other end is pulled back to the rear hook portion 430 of the rear end of the piston rod 41. Stop hooking.

Thereafter, a rope or a wire is passed through the hole 171 of the hanging portion 17 at the rear end of the cylinder 1, and this agricultural liquid chemical pressure injector is hung and hung from the branches of the tree. Tightly insert and open the control valve 2.

In this state, the elastic member 5 moves the piston rod 4 at a predetermined pressure due to its elastic return action, and advances in the cylinder 1 along the axial direction. By this movement of the piston 42, the liquid agent in the cylinder 1 is forced into the trunk through the conduit 23 through the jet nozzle 24, and the plant body can quickly and completely absorb the liquid agent.

Further, with the movement of the piston rod 4, the conical portion 420 at the front end of the piston 42 gradually pushes the liquid agent forward by the elastic force of the elastic member 5. When the conical portion 420 comes into contact with the valve hole 11 at the front end of the cylinder 1, it means that the liquid agent has been completely pressed into the tree.

If it is necessary to further press-fit the liquid agent, the ejection nozzle 24 is withdrawn from the trunk, the elastic member 5 is removed, and the piston 42 is withdrawn from the rear end of the cylinder 1 to inject the liquid agent. Then, the liquid agent can be increased in pressure.

When it is not easy to extract the ejection nozzle 24 from the hole of the tree trunk and the piston 42 is not easily extracted from the cylinder 10, after the press-fitting of the liquid agent into the tree is completed, The elastic members 5 are simply removed first, and the pressing portion 61 of the slack valve 6 is pushed into the cylinder 1. With this pushing, a gap is formed between the convex portion 610 between the conical portion 62 at the tip of the slack valve 6 and the inner peripheral wall of the cylinder 1 so that the inside of the cylinder 1 communicates with the atmosphere. The piston rod 4 can be easily pulled out from the rear end of the cylinder 1.

When the slack valve 6 is pushed back to its original position, it becomes a closed state, and in this state, the liquid agent can be filled inside the bomb 1. Moreover, the piston rod 4 can be pushed into the cylinder 1 relatively easily after the liquid agent is newly filled. In this way, the liquid agent can be replenished from the rear end opening of the cylinder 1 without extracting the ejection nozzle 24 from the hole of the tree trunk, and it is possible to prevent a large number of holes from being opened in the tree trunk.

In addition, the cylinder 1 of the present invention does not necessarily allow the liquid agent to be injected without hanging it on a tree branch. If necessary, the liquid agent can be injected even if it is laid sideways or tilted. In particular, if one or more hanging ears 7 are provided at the front end of the cylinder 1 as shown by the alternate long and short dash line in FIGS. 4 and 5, it can be hung at an arbitrary angle and used.

The present invention is not limited to the above embodiment, and the slack valve 6 does not necessarily have to be provided. Further, when the slack valve is provided, the slack valve having various designs can be used without being limited to the slack valve having the above-described configuration.

Further, in the above embodiment, the elastic member 5 is formed of a pair of tension springs, but a plurality of tension springs may be provided to reinforce the pressure force of the liquid agent if necessary. Alternatively, a rubber ring having a required elasticity may be used. Rubber rings have a certain level of convenience because they are inexpensive and easy to purchase.

[0036]

[Effect of device]

 As is clear from the above description, the liquid agent injecting device according to the present invention has the effects listed below.

(1) At the time of use, only the liquid agent needs to be charged, and the conventionally required filling of pressurized air is not required. Therefore, there is no problem that the proportion of the mixture of liquid and air cannot be easily controlled, and there is no fear of air leakage due to inadvertent vibration during transportation, so various annoyances can be avoided. Moreover, while the volume of the cylinder that holds the liquid agent can be appropriately reduced, it can be used in a state of being laid sideways or at an angle, so it is convenient when there are no branches that can be appropriately hung, and it is more convenient for air leakage and air pressure. It is extremely economical, convenient and safe to use as it is not damaged.

(2) When it is necessary to fill the liquid agent, simply carry an appropriate canned or bottled liquid agent to the orchard, and pull out the piston rod from the cylinder to fill the liquid agent. Can be used repeatedly. Furthermore, since additional elastic members can be added to replenish the pressure force, it is convenient to operate and saves manpower and time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a conventional agricultural liquid agent injecting device.

FIG. 2 is a cross-sectional view of a conventional agricultural liquid agent injecting device after assembly is completed.

FIG. 3 is an exploded perspective view of an embodiment of the present invention.

FIG. 4 is a cross-sectional view of the above embodiment after assembly is completed.

FIG. 5 is a cross-sectional view showing the operation of the above embodiment.

FIG. 6 is an enlarged cross-sectional view of a portion where the slack valve is attached in the above embodiment.

[Explanation of symbols]

 1; cylinder 11; valve hole 23; conduit 24; jet nozzle 4; piston rod 42; piston 5; elastic member 6; slack valve

Claims (2)

[Scope of utility model registration request] 1. A jet nozzle is provided at the front end of the conduit by providing an opening at the rear end of a cylindrical body having an internal hollow space capable of storing a liquid agent, opening a valve hole at the front end, and fitting a hollow conduit into the valve hole. The cylinder that is attached to the cylinder, the piston at the front end, and the piston rod that is slidably inserted into the cylinder, the cylinder and the piston rod are elastically connected, and the piston is pulled and urged forward. An agricultural liquid pressure injector comprising a plurality of elastic members that move forward in a cylinder, the elastic member moving a piston to eject the liquid agent contained in the cylinder from an ejection nozzle. 2. The agricultural liquid injector according to claim 1, wherein a loosening valve is attached to a wall surface of the front end of the cylinder so that the piston rod can be easily extracted from the cylinder.