JPH0767428A - High-pressure liquid-injecting apparatus - Google Patents

Abstract

PURPOSE:To obtain an apparatus for injecting high-pressure liquid into a lawn, capable of simply controlling injection depth and diffusing degree of the liquid and injecting the liquid by continually operating a control valve using a jetting nozzle whose attaching angle is longitudinally and laterally controllable and jetting the high pressure liquid. CONSTITUTION:This high pressure liquid injecting apparatus is provided with a liquid tank for storing liquid, a high-pressure pump driven by giving rotating power, a pressure control tank for temporally storing liquid pressurized with the high pressure pump, a jetting nozzle 13 for jetting the pressurized liquid and a control valve 15 and the apparatus intermittently injects the liquid into soil by continually operating this control valve 15. In the apparatus, the jetting nozzle 13 is formed in a nozzle unit 16 supported with an arm lever 14 and jetting angle of the jetting nozzle 13 can longitudinally and laterally be controlled by lifting and lowering this arm lever by an electric motor, vertically turning a nozzle unit 16 by a pin 21 pivotal in lateral direction and oscillating in lateral direction by a pin 23 pivotal in longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure liquid injecting device for injecting a high-pressure liquid into lawn grass such as a golf course to activate soil.

[0002]

2. Description of the Related Art The applicant has proposed a method of injecting a high-pressure liquid into a lawn to perform an aeration operation. However, this device controls a high-pressure liquid adjusted to a constant pressure by a pressure control valve. The control valve is intermittently driven to eject the high-pressure liquid from the tip of the ejection nozzle.

[0003]

In the above-mentioned conventional apparatus, since the ejection nozzle is always maintained in the vertical posture with respect to the ground, the injection depth of the high pressure liquid may be changed,
It was not possible to easily change the degree of horizontal diffusion of the liquid agent.

[0004]

SUMMARY OF THE INVENTION The present invention is proposed in view of the above-mentioned problems, and it is possible to easily adjust the front-back direction or the left-right direction of the jet nozzle so as to adjust the liquid injection depth and the diffusion degree. It is intended to provide a device that can be easily adjusted. Therefore, the following technical measures were taken. That is, a liquid tank 9 that stores liquid, a high-pressure pump 11 that is driven by rotational power, and a high-pressure pump 11
Pressure control tank 12 for temporarily storing the liquid pressurized by
A high-pressure liquid injection device 6 including an ejection nozzle 13 for ejecting a pressurized liquid and a control valve 15, and intermittently injecting the liquid into the soil by operating the control valve 15 intermittently. In the above, the high-pressure liquid injection device is configured such that the ejection angle of the ejection nozzle can be adjusted.

[0005]

Embodiments of the present invention will be described below based on the embodiments shown in the drawings. First, the structure will be described. A supporting machine frame 5 is provided at the rear of the machine body of the tractor-1 via a three-point link mechanism 4 including lower links 2, 2 and a top link 3.
And the high-pressure liquid injection device 6 is connected to the support frame 5.
Is attached, and the high-pressure liquid injection device 6 is moved up and down by moving up and down the hydraulic lifting device 7 of the tractor-1.

The high-pressure liquid injection device 6 includes a liquid tank 9 containing a chemical liquid, water, etc., a high-pressure pump 11 driven by a rotational power from the PTO shaft 10 of the tractor 1, and a high-pressure liquid delivered from the high-pressure pump 11. Is provided with a pressure regulating tank 12 for temporarily storing the liquid, 16 jet nozzles 13 for jetting a high-pressure liquid, and the control valve 15 is intermittently turned ON,
High-pressure liquid is ejected by controlling the OFF state 1
It is ejected into the ground from 3.

FIG. 2 is a perspective view of an essential part of the nozzle unit 16. Two nozzle units 16 are provided at the rear of the machine body, and each nozzle unit 16 has two control valves 1 each.
5 and four jet nozzles 13 below each are provided so that the high-pressure liquid is jetted from the lower end portions of the eight jet nozzles 13 in total. Reference numeral 14 denotes an arm rod that supports the nozzle unit 16, the front end portion of which is pivotally connected to the support frame 5 of the machine body. The arm rod 14 is rotated up and down by an electric motor 24. Reference numerals 21 and 23 are pivot pins, and the nozzle unit 16 is configured to rotate up and down about the lateral pin 21 and swing to the left and right around the longitudinal pin 23.

Reference numeral 17 is a plate-shaped sled body which constitutes a part of the nozzle unit 16, and gently bends the front and rear portions and the left and right side portions of the sled body to raise resistance from soil or lawn while the nozzle unit 16 is in progress. The shape makes it easy to follow the changes even when receiving. A plurality of through holes 17 a are formed in the bottom plate portion of the sled body 17 so as to face the ejection nozzles 13. Further, four support frames 18 are installed between the front and rear edges of the sled body 17 along the front-rear direction, and one control valve 15 is mounted on the pair of left and right support frames 18. FIG. 5 shows the specific mounting structure. The left and right control valves 1
Since the mounting structure of 5 is the same, only one (left side) of the structure will be described. The nozzle support pipe 19 to which the four ejection nozzles 13 are fixed and the cylindrical case 20 of the control valve 15 will be described.
Are connected to each other by a transfer pipe 22, and these integrated parts are rotatably mounted in through holes 26, 26 formed in a semicircular plate 25 fixed on the support frames 18, 18. It is fitted and supported.

Specifically, the nozzle support tube 19 is rotatably supported around its axis while being inserted into the through holes 26 formed in the plate 25. Nozzle support tube 1
An adjusting plate 29 is fixed to 9 so as to be orthogonal thereto, while
On the side of the semicircular plate 25, a plurality of screw holes 30 are formed on a concentric arc. After matching one of the screw holes 30 with the screw hole 31 formed in the adjusting plate 29,
The adjustment bolt 33 is inserted from the side to adjust the position of the control valve 15 in the front-back inclination posture. FIG. 7 is an operation diagram when the high-pressure liquid is jetted straight to the ground while keeping the inclined posture of the jet valve 13 vertical.

Further, FIG. 8 shows a state in which the control valve 15 is rotated and fixed so as to be tilted rearward. Next, the internal structure of the control valve 15 will be briefly described. As shown in FIG. 4, a coil 62 is housed in the case 20 of the control valve 15, and a hollow guide body 6 is provided in the center thereof.
4 and the plunger 66 are accommodated. Plunger
A push rod 67 is integrally fixed to the right side of 66, and a spring 69 is provided at the outer end of the push rod 67 via a washer 68. Reference numeral 70 is a washer, and 72 is a bolt for adjusting the pressing force of the spring. A small diameter needle portion 74 is provided on the left side of the plunger 66.
The front end portion of the valve closes the opening 76 communicating with the valve port 75. A communication hole 79 is provided inside the delivery pipe 22, and when the coil 62 is energized and the plunger 66 is instantaneously moved to the right side, the inside of the valve port 75 and the nozzle support pipe 19 is opened through the opening 76. The high pressure liquid is ejected from the tip of the nozzle 13 by communicating with the hole 80. In this embodiment, the inner diameter of the nozzle tip is 0.7 m.
The range from m to 1.2 mm is preferable, and it may be out of this range. Reference numeral 81 is a seal, and 82 is a fastening bolt.

The control valve 15 is energized by a controller 35 composed of a microcomputer, and the controller 35 adjusts the amount of high-pressure liquid ejected intermittently from the ejection nozzle 13 at one time. An injection amount setting dial 36 and a number setting dial 37 for setting the number of ejections per unit time are provided. When the output conditions are set by the setting dials 36 and 37, a rectangular pulse signal is output from a pulse generating means (not shown),
A valve drive pulse is applied to the control valve 15. Although the controller 35 is installed on the supporting machine frame 5 side,
Since the switch box 43 to which the start switch 41 and the stop switch 42 for starting the ejection are attached is easy to waterproof and needs to be operated frequently, this switch box 43 is used as the fender-8 of the tractor-1. It is installed on the top. The switch box 43 may be provided anywhere as long as it can be easily operated by the operator.
For example, in the case of a cabin or a tractor with lops-1, it may be installed on the ceiling or a center pillar.

In FIG. 3, 44 is a switch box 43.
Is a battery switch, 48 is a battery, 49 is a pressure regulating valve, and 50 is a pressure gauge. The pressure regulating valve 49 is the high pressure pump 11
It is like a relief valve for adjusting the pressure of the liquid sent from the control valve 15 to the predetermined pressure, and is set to 250 kg / cm ² in this embodiment. In the above example,
When the output conditions are set by appropriately operating the setting dials 36 and 37, a drive pulse is issued to the control valve 15 according to a command from the controller 35, and the high-pressure liquid is vigorously ejected from the lower end of the ejection nozzle 13. .

In this case, when it is desired to inject a liquid deeply, for example, to inject a chemical liquid such as a bactericide into a deep place in the soil, the control valve 15 and the jet nozzle 13 should be placed vertically with respect to the ground as shown in FIG. Work upright. Conversely,
When it is desired to make the injection depth of the chemical liquid shallow or to spread the chemical liquid widely in the soil, the control valve 15 is tilted backward as shown in FIG. That is, the adjusting bolt 33 is removed to release the engagement between the adjusting plate 29 of the nozzle support tube 19 and the plate 25, and the case 20 of the control valve 15 is moved from the state of FIG. 7 to the state of FIG. Rotate backwards. And
Screw holes 31 of the adjusting plate 29 and screw holes 30 on the plate 25 side
Then, the adjustment bolts 33 are inserted again from the side, and both are fastened and fixed.

As described above, in this embodiment, the nozzle support tube 19 to which the jet valve 13 is attached is rotated by a predetermined angle between the left and right plates 25, 25 and fixed again. Therefore, the injection depth and the degree of liquid diffusion can be easily adjusted, and the structure is extremely simple, so that the structure can be manufactured at low cost. In this embodiment, the angle adjustment of the jet nozzle 13 is rotatable in the front-back direction, but it may be rotated in the lateral direction.

In any case, since the injection depth can be easily adjusted, a small amount of the drug solution can be effectively used according to the kind of the pest, and the work can be performed well.

[0016]

As described above, the high-pressure liquid injection device according to the present invention stores the liquid tank for storing the liquid, the high-pressure pump driven by the rotational power, and the liquid pressurized by the high-pressure pump. It is equipped with a pressure-regulating tank for temporarily storing, a jet nozzle for jetting a pressurized liquid, and a control valve. The control valve is intermittently operated to intermittently inject the liquid into the soil. The high-pressure liquid injection device is characterized in that the ejection angle of the ejection nozzle is adjustable, so that it is possible to easily adjust the liquid injection depth and the diffusion degree. In addition to improving working efficiency, there is little waste of the chemical liquid, which contributes greatly to cost reduction.

[Brief description of drawings]

FIG. 1 is a side view of the entire apparatus.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a development view in which the connection of each element of the device is explained in an easy-to-understand manner.

FIG. 4 is a sectional view of a control valve.

FIG. 5 is a rear view of the nozzle unit.

FIG. 6 is a side view of a main part.

FIG. 7 is an operation explanatory view.

FIG. 8 is an operation explanatory view.

[Explanation of symbols]

 1 tractor 5 support frame 6 high-pressure liquid injection device 9 liquid tank 11 high-pressure pump 12 pressure-regulating tank 13 jet nozzle 15 control valve 35 controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Yamada 3-14-11 Kotobuki, Taito-ku, Tokyo Toyo Green Co., Ltd. (72) Inventor Makoto Yagi 3-14-11 Kotobuki, Taito-ku, Tokyo Toyo Green Co., Ltd.

Claims (1)

[Claims] 1. A liquid tank for storing liquid, a high-pressure pump driven by rotational power, a pressure-regulating tank for temporarily storing liquid pressurized by the high-pressure pump, and a pressurized tank. A jet nozzle for jetting liquid and a control valve are provided,
A high-pressure liquid injection device in which a liquid is intermittently injected into the soil by intermittently operating the control valve, wherein the ejection angle of the ejection nozzle is adjustable.