JPS63280110A - Soil injector - Google Patents

Abstract

PURPOSE:To obtain a soil injector capable of jetting a pressure liquid concurrently toward downward and sideward directions by attaching a vertical nozzle and size nozzle to a double tube. CONSTITUTION:A vertical nozzle 45 and a side nozzle 47 are provided for one end of a double tube, and a pressure liquid outlet consisting of an inside flow path 44, an outside flow path 46, an opening leading to the flow path 46, and a communication hole 4 leading to the flow path 46, which lead to both the nozzles 45 and 47, is also provided. An on-off valve 10 and a switch valve for the pressure liquid flow paths are provided for a valve cylinder 2 having a pressure liquid inlet 6 through which a pressure liquid is introduced. A soil injector enabling worker to optionally select the direction of jetting according to applicating purposes and also according to various kinds of soil.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a soil injector used for directly injecting chemical solutions, liquid fertilizers, etc. into soil.

Prior Art This type of injector has a sharp tip at the tip of the chemical liquid conduit to make it easier to penetrate into the soil, and a chemical liquid spray nozzle that opens laterally at the sharp tip, and a cock installed at the upper end of the chemical liquid conduit to open and close it. A common structure is to inject the chemical solution.

On the other hand, in Japanese Patent Application Laid-open No. 60-203129,
The chemical liquid conduit is a double tube consisting of an inner tube and an outer tube. Disclosed is a soil injector which has a structure in which an injection hole is provided at the lower end of the injector in a downward and horizontal direction, and the direction of the injection force is switched by rotating the inner tube by a predetermined angle with respect to the outer tube. has been done.

OBJECTS OF THE INVENTION The present invention provides a soil injector that can simultaneously inject pressurized liquid downward and horizontally, and can also inject a single injection in each direction, and can easily switch between them with a - action. , the purpose is to provide.

Structure of the Invention In order to achieve the above object, the present soil injector has a vertical nozzle that injects pressurized liquid in the axial direction of the double tube at one end thereof, and a horizontal nozzle that injects pressurized liquid in the radial direction of the double tube. and an injection pipe section in which both nozzles communicate with either one of the two flow paths, an inner flow path and an outer flow path, in the double tube, and an injection pipe section connected to the other end of the injection tube section, and the inner flow path connected to the other end of the injection tube section. A pressurized liquid outlet consisting of an opening that communicates with the flow path and a communication hole that communicates with the outer flow path, and a pressurized liquid inlet that introduces the pressurized liquid from a liquid pressure feeding unit such as a power sprayer through a hose. An on-off valve that opens and closes a pressurized liquid flow path from the pressurized liquid port to the pressurized liquid outlet, and a pressurized liquid that has passed through this on-off valve to the opening and the communication hole at the same time. and a switching valve that allows selection of whether the supply is introduced into the opening or the communication hole, and further includes an on-off valve and a switching valve. As a specific example, the on-off valve has a valve body that is pressed against the valve seat by spring pressure, and one end of which is fixed to the valve body and the other end that is slidably slidable out of the valve cylinder while maintaining fluid tightness. The switching valve is composed of a hollow valve stem that protrudes from the valve body, and the switching valve includes a valve body that can open and close a flow path to the pressurized liquid outlet, and a valve body that has one end fixed to the valve body and the other end that passes through the hollow valve stem. The hollow valve stem and the valve rod are screwed together, and the valve rod is rotated relative to the hollow valve stem to be threaded, thereby adjusting the mutual relationship. The position of the switching valve is moved and fixed so that the position of the switching valve can be selected, and the valve rod and the hollow valve stem can be integrally displaced, so that the hollow valve stem protrudes outside the valve cylinder. An example in which the opening/closing valve is simultaneously opened, closed, and switched by a lever knob engaged with a portion will be illustrated in detail below with reference to the drawings.

FIG. 1 shows a soil injector showing an embodiment of the present invention, and its structure is as shown in FIG.
The footrest is connected to a bar 52, a support bar 53 on the upper part of the outer periphery, an injection pipe section 40 which is movably and fixedly provided, a hose 54 connected to a chemical liquid pressure pump (not shown), and one end of the injection pipe section 40. It consists of a supply operation section 1. Injection pipe part 4
0 is an inner tube 41 and an outer I provided coaxially with this inner tube.
A conical nozzle cap 43 is watertightly hinged to the tip of a double tube consisting of g42. A vertical nozzle 45 that opens toward the inner tube and a horizontal nozzle 47 that communicates with an outer flow path 46 formed by a gap between the inner tube 41 and the outer tube 42 are provided. 48 is a ring that maintains watertightness between the inner flow path and the outer flow path.

On the other hand, a valve 02 is integrally connected to the upper end of the double pipe at one end 2a, an inner flow path 44 communicates with the valve cylinder 2 through an opening 2b provided in the valve cylinder 2, and an outer flow path 46 communicates via a bypass pipe 3 with a communication hole 4 that opens on the side circumferential surface of the valve cylinder 2 .

A grip handle 5 is integrally provided on the circumferential surface near the other end of the valve barrel 2, and a liquid passage 5a provided through the grip handle opens at the upper end of the circumferential surface of the valve barrel 2. It communicates with the pressurized fluid port 6. The valve cylinder 2 is configured so that it can be divided into two parts by a hinge part 2C, such as a side that is integrally connected to the double pipe and a side that is integrally connected to the grip handle 5. A seven-run-shaped valve seat 7 is fixed on the inner circumferential surface of the valve. Further, a cylindrical valve seat 8 is housed coaxially with the valve cylinder 2 in the valve f:12 extending from the valve seat 7 to the communication hole 4 and the opening 2b, and one end of the cylindrical valve seat 8 is The cylindrical valve seat 8 is supported by a partition wall 9 that faces the opening 2b at a certain distance and protrudes from the inner peripheral surface of the valve cylinder toward the outer peripheral surface of the cylindrical valve seat 8. The outer space of the cylindrical valve seat 8 is partitioned into an opening (2b) side and a communication hole (4) side. The pressurized liquid flow path from the pressurized liquid inlet 6 in the valve cylinder 2 to the pressurized liquid outlet consisting of the opening 2b and the communication hole 4 is brought into pressure contact with the valve seat 7 by the on-off valve 10 by a spring. Further, there is an outer flow passage on-off valve 13 which presses the flow passage from the on-off valve 10 to the communication hole 4 to the on-off valve side end 8a of the cylindrical valve seat 8 by a spring 12. It is closed and can be opened and closed.

25 is a groove 13a carved on the outer periphery of the outer flow path opening/closing valve 13.
13b is a through hole that passes through the center of the valve 13 in the axial direction; is a liquid passage provided around the through hole 13b and parallel to the through hole.

Reference numeral 14 denotes a liquid passage provided at the end 8a of the cylindrical valve seat, which is shut off from the opening/closing valve 10 side by the outer flow passage opening/closing valve 13. The end 15a of the hollow valve rod 15 of the on-off valve 10 extends in the axial direction of the valve cylinder 2 and protrudes outside the valve cylinder.This protruding end 15a is connected to the lever handle 16 and the valve cylinder is connected to the end 15a. A U-shaped connecting piece 17 (FIG. 2) provided to sandwich one piece is engaged and secured by a cap screw 18.

Reference numeral 19 denotes an O-ring for maintaining the affiability of the hollow valve rod 15 that slidably protrudes from the end of the valve cylinder 2. A valve rod 21 passes through the on-off valve 10 and the hollow valve rod 15 and is hinged (20) L with the hollow valve rod 15 near the end, and has an adjustment knob 26 at its protruding end. It is provided. The other end of the valve rod 21 has a stepped large-diameter portion 24 formed at a position where it passes through the through hole 13b of the outer flow path opening/closing valve 13, and further passes through the cylindrical valve seat 8 and extends toward the opening 2b side. By providing the inner flow passage opening/closing valve 22 on the protruding portion, it constitutes a switching valve that can select the flow passage together with the outer passage opening/closing valve.

Reference numeral 23 denotes an O ring through which the on-off valve 10 and the valve rod 21 can freely slide and maintain watertightness.

Operation In FIG. 1, when the lever handle is slightly squeezed to open the on-off valve 10, the pressurized liquid flows through the liquid passage hole 13c of the outer flow path on-off valve 13.
The pressurized liquid passes through the cylinder, enters the cylindrical valve seat 8, goes around the inner flow path opening/closing valve 22, reaches the opening 2b, and ejects pressurized liquid from the vertical nozzle 45 in the axial direction. If you squeeze the lever handle further,
The stepped large diameter portion 24 of the valve rod 21 moves the outer passage opening/closing valve 13 to the right side, and at this time, the inner passage opening/closing valve 22
is in a position where it does not block the opening 2b side end 8b of the cylindrical valve seat 8, the pressurized liquid flows into both the inner and outer flow paths,
It is ejected from both the vertical nozzle 45 and the horizontal nozzle 47. Then, when the lever handle moves to a position where the inner flow path opening/closing valve 22 closes the end portion 8b of the cylindrical valve seat, the pressurized liquid is ejected only from the horizontal nozzle 47. Therefore, by turning the adjustment knob 26, the inner flow passage opening/closing valve and the end 8 of the cylindrical valve seat 8 can be adjusted.
By adjusting the distance between 8b and 8b so that only the end 8b of the cylindrical valve seat is closed when the lever handle is fully squeezed, pressurized liquid can be injected only from the side nozzle, and the lever handle can be fully squeezed. If the stepped large-diameter portion 24 of the valve rod 21 is placed in a position where it does not come into contact with the outer flow passage opening/closing valve 13 even when gripped, injection can be performed only from the vertical 7'X cylinder.

Effects The soil injector of the present invention can be switched so that when the lever handle is squeezed slightly, the pressurized liquid is first sprayed in the vertical direction, and when the lever handle is squeezed further, the pressurized liquid is sprayed horizontally. Furthermore, by selecting the position of the valve rod using an adjustment knob, it is possible to limit the use to injection only in either the horizontal or vertical direction.

Soil injectors currently on the market are generally equipped with a nozzle that injects in the radial direction or in the axial direction with respect to the outer tube. This makes it possible to apply fertilizers that are suitable for the roots of crops, and in the latter case, the chemical solution can be inserted into the hard, compacted soil without being sprayed vertically, and the drilling effect created by the spray pressure is added. Each has features that make it easy to work with.

The purpose of the present application is to provide a soil injector that has both of these characteristics at the same time.
Slightly squeeze the lever and utilize the perforating action of the vertical jet to reduce the labor of inserting the work. Once the lever has been inserted to the required depth, fully squeeze the lever to spray the chemical solution laterally to the roots of the crop. Appropriate fertilizer application can be done, and the operation is also very simple. In addition, the injection direction can be selected depending on the purpose of use by the worker, making it suitable for all types of soil injection.

Soil injection work involves pulling a heavy hose filled with pressurized fluid at regular intervals during the day, which causes localized fatigue in the hands and feet.
According to the present application, the injection direction can be changed by simply squeezing the lever handle lightly, and the effect of reducing the work is also significant.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted sectional view showing an embodiment of the present invention. :jS2 is an explanatory diagram showing the usage state of the embodiment shown in FIG. 1. Patent applicant: Tsuneo Asaba Figure 2

Claims (2)

[Claims] (1) One end of the double tube has a vertical nozzle that injects pressurized liquid in the axial direction of the double tube, and a horizontal nozzle that injects pressurized liquid in the radial direction of the double tube. an injection pipe portion communicating with either one of the two flow paths of the outer flow path; and a communication hole connected to the other end of the injection pipe portion and communicating with an opening communicating with the inner flow path and the outer flow path. a pressurized liquid flow path from the pressurized liquid inlet to the pressurized liquid outlet in a valve cylinder provided with a pressurized liquid outlet consisting of a pressurized liquid outlet and a pressurized liquid inlet for introducing the pressurized liquid from the liquid pumping section; It is characterized by being composed of an on-off valve that opens and closes the on-off valve, and a supply operation section that is operatively provided with a switching valve that can selectively introduce the pressurized liquid that has passed through the on-off valve into the opening and/or the communication hole. soil injector. (2) The on-off valve includes a valve body that is pressed against the valve seat by spring pressure, and a hollow valve that is fixed to the valve body at one end and slidably protrudes outside the valve cylinder while maintaining liquid tightness at the other end. The switching valve is made of a rod, and has a valve body capable of opening and closing a flow path to the pressurized liquid outlet, and one end fixed to the valve body and the other end passing through the hollow valve stem and protruding outside the valve cylinder. Consisting of a valve rod, the hollow valve stem side and the valve rod are screwed together so that their relative positions can be moved and fixed, making it possible to select the position of the switching valve and also to enable integral displacement of both. 2. The soil injector according to claim 1, wherein the on-off valve and the switching valve are simultaneously opened and closed by operating a lever handle that engages with the hollow valve stem.