JP2001346420A - Gas and liquid-injecting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand held type gas and liquid-injecting machine not requiring for a worker grasping an operating lever for injecting a medicinal liquid, etc., and compressed air, etc., always tightly during an injecting work, aiming at the reduction of fatigue and improvement of working efficiency of the worker and further aiming at the easiness of its operability. SOLUTION: This gas and liquid-injecting machine is provided by constituting a gas and liquid-supplying part 11 consisting of a liquid passage 9 and gas passage 10 having opening and closing valves 7, 8 in their inside at the upper part of a gas and liquid-injecting pipe 2 installed with an injecting nozzle 6 having a gas and liquid-ejecting port 5 at its lower end, and the above opening and closing valves 7, 8 as freely openable and closable with operating levers 15, 16, and pivoting each of stoppers 36, 37 for maintaining the opened up state of the above opening and closing valves 7, 8 and also as freely releasable at the above operating levers 15, 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to gas-liquid injection for injecting liquid such as liquid fertilizer, chemical liquid (hereinafter referred to as "chemical liquid") or gas such as compressed air into soil such as orchards and fields. The invention relates to a gas injection device, in particular to a hand-held gas-liquid injection device.

[0002]

2. Description of the Related Art In an orchard, a field, or the like, a worker inserts a gas-liquid injection pipe having an injection nozzle at a lower end into soil, and injects a chemical solution or the like into the soil to prevent scabs and the like. A hand-held gas-liquid injector for disinfecting the soil or injecting compressed air or the like to activate the soil has been proposed (see Japanese Utility Model Publication No. 61-41531).

In addition, a hand-held gas-liquid injector for simultaneously injecting the chemical and the like and the compressed air and the like to achieve fertilization, control, disinfection, and soil activation by synergistic effects has been proposed ( Japanese Patent Application No. 11-3 proposed by the present applicant
No. 4184).

[0004]

In the conventional hand-held gas-liquid injector, an operator supplies the chemical or the like or the compressed air or the like during the operation of injecting a chemical or the like into the soil or compressed air. Operation levers must always be grasped with fingers. Therefore, especially when the liquid such as the drug solution is injected into the soil, the operation lever needs to be held for a long time, and the operator feels fatigue and affects workability.

The present invention has been made in view of the above-mentioned circumstances, and has an opening / closing valve provided in a passage for a chemical solution or the like for a compressed air or the like in each of the operation levers so as to maintain and release the open state. By installing a stopper, during work,
It is not necessary for the operator to always hold the operation lever, so that the operator can reduce fatigue and improve the workability, and furthermore, the hand-held gas-liquid that facilitates the operation of the operation lever and the stopper. It is intended to provide an injection machine.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an on-off valve provided above a gas-liquid injection pipe provided with an injection nozzle having a gas-liquid injection port at a lower end thereof. A gas-liquid supply unit comprising a liquid passage and a gas passage having: is configured, the on-off valve is configured to be openable and closable by an operation lever, and the operation lever maintains an open state of the on-off valve. A removable stopper is pivotally supported.

According to the first aspect of the present invention, the gas-liquid injection pipe is pushed into the soil, and the operation lever is grasped with fingers to inject a drug solution or compressed air into the soil. At the same time, even if the operator releases his / her finger or the like from the operation lever by operating the stopper, injection of a chemical solution or the like or compressed air or the like is continued as it is.

Therefore, the operator does not need to hold the operation lever until the injection of the chemical solution or the compressed air or the like is completed, so that the feeling of fatigue is reduced and the workability is further improved.

In one embodiment of the present invention, when each of the stoppers opens the on-off valve by a gripping operation of the operation lever, the respective protrusions press and lock the protrusions on the outer surface of the gas-liquid supply unit. Then, the operation lever is prevented from returning, and the operation lever is automatically released by further gripping operation of the operation lever.

According to one embodiment of the present invention, after the respective stoppers are actuated by the gripping operation of the operating lever, and the operating lever is further lightly gripped, the stopper is automatically released. When the operation lever returns, the on-off valve is closed, so that there is no need to perform the release operation of the stopper separately from the operation lever, thereby improving workability.

According to an embodiment of the present invention, a grip portion is formed in a rear end direction of each of the stoppers, and a grip portion is formed on the outer side surface of the gas-liquid supply portion so as to be pressed against and locked to the front end side. The grip portion side is configured to be heavy.

According to the third aspect, after the opening / closing valve is opened by the gripping operation of the operating lever, the operating lever is further gripped and the stopper is pressed against the outer surface of the gas-liquid supply unit. If the stop state is slightly affected, the stopper loses the effect of holding the position of the operation lever, and the rear side of the stopper is automatically rotated by its own weight, so that the pressing lock on the gas-liquid supply unit is released. Then, the on-off valve is closed with the return of the operation lever.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially omitted overall front view showing an embodiment of a gas-liquid injector according to the present invention.
FIG. 4 is a vertical sectional view of a gas-liquid supply unit.

The gas-liquid injector 1 according to one embodiment of the present invention comprises:
A gas-liquid injection pipe 2 as a gas-liquid injection member;
It has operation handles 3 and 4 provided on the left and right of the upper end portion, and has a substantially T-shape as a whole.

The gas-liquid injection pipe 2 is held by the operator with both hands on the operation handles 3 and 4 provided on the left and right of the upper end of the gas-liquid injection pipe 2 so that the gas-liquid injection pipe 2 is An appropriate length (0.9 mm) is set so that it can be vertically inserted into the soil G as a liquid injection target and the operation levers 15 and 16 described later can be easily operated.
m).

Next, at the lower end of the gas-liquid injection pipe 2, an injection nozzle 6 having an appropriate number of gas-liquid injection ports 5 opened radially is provided. ,
A gas-liquid supply unit 11 is constituted by a liquid passage 9 and an air passage 10 having on-off valves 7 and 8, respectively. The operation handles 3 and 4 are provided on the left and right of the upper end of the gas-liquid supply unit 11, respectively. Have been.

In the gas-liquid supply section 11, the liquid passage 9 and the air passage 10 are arranged at an appropriate interval in parallel with each other in the vertical direction, and the lower ends of the liquid passage 9 and the air passage 10 are connected to each other. The gas-liquid injection pipe 2 is connected to the lower end of the merged channel 12 by screwing or the like.

Further, an upper portion of the liquid passage 9 is communicated with a liquid supply source (not shown) such as a chemical via a communication passage 9a utilizing a part of the inside of the right operation handle 3. A liquid supply pipe 13 and a joint 13a such as a one-touch coupler are connected, and a communication path 10 using a part of the inside of the left operation handle 4 is provided above the ventilation path 10.
The air supply pipe 14 communicated with an air supply source (not shown) such as compressed air and a joint 14a such as a set of one-touch couplers are connected via a.

As described above, if a hose (not shown) for supplying the chemical solution or the like and the compressed air or the like is concentrated in the center of the machine body, the hose can be easily handled and the workability is improved.

In the figure, reference numeral 34 denotes an air pocket chamber disposed above the liquid passage 9 and the air passage 10 so as to maintain the weight balance between the left and right sides of the machine body. 10 a and the air supply pipe 14.
In the figure, reference numeral 35 denotes a check valve provided inside the air supply pipe 14 for preventing a chemical solution or the like from flowing into the air supply source.

In FIG. 2, for convenience of explanation, the liquid supply pipe 13, the joint 13a and the air supply pipe 1 are shown.
4, the joint 14a is shown extending in the same direction as the operation handles 3 and 4, respectively, but in this state, it hinders the gripping of the operation handles 3 and 4 by an operator. As shown in FIG. 1, the liquid supply pipe 13, the joint 13a and the gas supply pipe 14, the joint 14
a are arranged in the direction in which they intersect.

In the above construction, the two operation levers 1
By operating 5, 16 individually or simultaneously,
The two on-off valves 7 and 8 can be opened or closed individually or simultaneously, and the chemical solution or the like and the compressed air or the like can be separately or simultaneously injected into the soil G.

Next, a configuration in which the operation levers 15 and 16 can open and close the on-off valves 7 and 8 will be described. In the embodiment shown in the drawings, shafts 19 and 20 around which coil springs 17 and 18 are wound are connected to the upper portions of the two on-off valves 7 and 8, respectively, and the on-off valves provided at the lower ends of the shafts 19 and 20 are connected. Due to the resiliency of the coil springs 17 and 18, small-diameter liquid passages 9, 8 are formed below the liquid passages 9 and the air passages 10.
b and the small diameter ventilation path 10b.

Further, upper portions of the shafts 19 and 20 are respectively connected to upper portions of the gas-liquid supply portion 11 and plug bolts 21 and 22 screwed to upper positions of the liquid passage 9 and the air passage 10, respectively. Connecting portions 27 and 28 of downward U-shaped metal fittings 25 and 26 having hanging pieces 23 and 24 respectively hanging on the front and rear outer sides of the liquid passage 9 and the air passage 10 so as to be vertically movable. Through,
The fixing nuts 29 and 30 are screwed to the upper end.

Next, the operation lever 1 of the on-off valves 7 and 8 will be described.
5 and 16 are provided below the operation handles 3 and 4 so as to be grippable by fingers of an operator. In the embodiment shown in the drawings, each of the operation levers 15 and 16 is formed in a gutter shape, and further, the tip direction toward the central axis direction of each of the gas-liquid injection pipes 2 is the liquid passage 9 and the ventilation passage. The gas-liquid supply unit 1 is configured to have a bifurcated shape for receiving the passage 10 and further have its tips 15a and 16a respectively.
1 is pivotally supported between the liquid passage 9 and the air passage 10 by a pivot shaft 31.
A substantially middle portion of each of the downwardly-facing U-shaped brackets 25 and 26 has a pin 32,
Each is pivoted by 33 and arranged in a C-shape.

In the above configuration, the on-off valves 7 and 8 are
The resilient force of the coil springs 17, 18 wound around the shafts 19, 20 causes the small-diameter liquid passage 9 formed in advance under the liquid passage 9 and the air passage 10.
b and the small-diameter ventilation passage 10b are closed.

Next, the injection nozzle 6 at the lower end of the gas-liquid injection pipe 2 is made to protrude into the soil G, and the operation levers 15 and 16 are pulled toward the operation handles 3 and 4 with fingers to squeeze. Then, the downward U-shaped bracket 25,
26 is pushed up, and the connecting portions 27 and 28 of the downward U-shaped brackets 25 and 26 are locked to the fixing nuts 29 and 30 provided at the upper ends of the shafts 19 and 20,
The shafts 19, 20 and the shafts 19, 20
The on-off valves 7, 8 provided at the lower end of the valve are raised.

Accordingly, the small-diameter liquid passage 9b and the small-diameter air passage 10b are opened, and the chemical liquid and the like and the compressed air and the like are supplied from the merging passage 12 in the gas-liquid supply section 11 to the gas-liquid injection pipe 2. Is supplied to the gas-liquid injection pipe 2.
The chemical liquid and the like and the compressed air and the like are injected and supplied into the soil G from the gas-liquid injection port 5 of the injection nozzle 6 provided at the lower end of the nozzle.

In this embodiment, stoppers 36 and 37, which maintain the open state of the on-off valves 7 and 8 and can be released, are provided at appropriate positions of the operation levers 15 and 16, respectively. It is pivoted by 38,39.

That is, the gutter-shaped operation levers 15, 1
6 has a notch 1 at a part of the bottom of the tips 15a and 16a.
5b and 16b are formed, and by using the cutouts 15b and 16b, the inside of the gutter-shaped operation levers 15 and 16 are formed.
The stoppers 36 and 37 are arranged, and the stopper 3
6 and 37 are pivotally supported by the pins 38 and 39.

The respective stoppers 36 and 37 are
The main body is formed in a small disk shape, and the operation levers 15 and 1 are provided.
6, when the on-off valves 7 and 8 are opened, the tip protrusion 36 formed in the tip direction, that is, on the gas-liquid supply unit 11 side.
a, 37a are pressed against the outer side surface 11a of the gas-liquid supply unit 11, and at the same time, the grips 36b, 37b formed in the laterally outwardly rear end direction are moved by the gutter-shaped operation lever 1
The notch 15b formed in a part of the bottom of
16b, the rotation of the grips 36b, 37b due to its own weight is stopped, and the operation levers 15, 1 are stopped.
6 is prevented from moving further downward (see FIG. 2, right, liquid passage 9 side), and the opening of the on-off valves 7, 8 can be maintained (FIG. 2, left, air passage). 10 side).

In order to prevent the operation levers 15 and 16 from returning, and to keep the on-off valves 7 and 8 open, the stoppers 36 and 37 need to be provided with the front-end protrusions 36a and 37a. The stopper point of the gas-liquid supply unit 11 against the outer side surface 11a is
6 and 37, which are located below a straight line XX connecting the pins 38, 39, which are pivot points, and the pivot shaft 31, which is a pivot point of the distal ends 15a, 16a of the operation levers 15, 16. It is necessary to prevent the operating levers 15 and 16 from lowering (see the left side of FIG. 2, the ventilation path 10 side).

First, the on-off valves 7, 8 before the injection operation is started.
When the is closed, the tip protrusions 36a, 37a of the stoppers 36, 37 are located above the straight line XX, and are provided on the rear end side substantially opposed to the tip protrusions 36a, 37a. The locking projections 36c, 37c are locked in the cutouts 15b, 16b formed in a part of the bottom of the gutter-shaped operation levers 15, 16 (FIG. 2, right). , Liquid passage 9 side).

Therefore, the operating levers 15, 16 and the grips 36b, 37 of the stoppers 36, 37
When the handle b is pulled toward the operation handles 3 and 4 to the full extent, the stoppers 36 and 37 are lifted at the same time as the operation levers 15 and 16 are moved upward, and the tips of the stoppers 36 and 37 are lifted. The convex portion 36a,
37a is made to approach the outer side surface 11a of the gas-liquid supply unit 11.

In this state, when the grip portions 36b, 37 are pulled up by a finger, the tip convex portions 36a, 37a are strongly pressed against the outer side surface 11a. And the open state of the on-off valves 7 and 8 is maintained (see the left side of FIG. 2, the ventilation path 10 side).

Next, the case where the on-off valves 7, 8 are closed from the open state of the on-off valves 7, 8 will be described.
In the state on the side of the ventilation path 10 (the state of the ventilation path 10 on the left in FIG. 2), that is, in the state where the grip portions 36b and 37b of the stoppers 36 and 37 are pulled up and held,
By pulling the operating levers 15 and 16 toward the operating handles 3 and 4 and gripping the operating levers, the stoppers 36 and 37 are rotated downward by their own weight and automatically turned on and off. Is released.

That is, when the operation levers 15 and 16 are squeezed toward the operation handles 3 and 4, the operation levers 15 and 16 are pivoted about the pivot shaft 31 which is the pivot point of the distal ends 15 a and 16 a of the operation levers 15 and 16. , The stoppers 36, 3
7 draws an arc, and the tip convex portions 36a, 37a of the stoppers 36, 37 are connected to the outer surface 1 of the gas-liquid supply unit 11.
1a, and at the same time, the tip protrusions 36a, 37a
The stoppers 36 and 37 lose stability because the gripping portions 36b and 37b sides in the rear end direction are heavier than those in the rear end direction. The suspension is automatically released.

[0038]

According to the present invention, each of the operation levers for individually or simultaneously injecting a chemical solution or the like and compressed air into the soil is provided with a passage for the chemical solution or the like and the compressed air or the like. By providing a stopper that can maintain and release the open state of the on-off valve provided in the ventilation path, the operator does not need to constantly grip the operation lever during work, thereby reducing operator fatigue and improving workability. And the operation of the operation lever and the stopper is extremely easy.

[Brief description of the drawings]

FIG. 1 is a partially omitted overall perspective view of a gas-liquid injector according to the present invention.

FIG. 2 is a vertical sectional view of a gas-liquid supply unit.

[Explanation of symbols]

 2 Gas-liquid injection pipe 5 Gas-liquid injection port 6 Injection nozzle 7,8 On-off valve 9 Liquid passage 10 Vent path 11 Gas-liquid supply unit 11a Outer side surface 15,16 Operation lever 36,37 Stopper 36a, 37a (of stopper) Convex portions 36b, 37b (for stopper)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuhiro Fukuizumi 1-7-2 Suehirocho, Ome-shi, Tokyo F-term (reference) 2K034 BA06 BB03 BC01 BD08 CA06 CB13 2B052 BC02 BC07 BC10 EC10 EC18 EC19 ED03 2B121 CB13 CB15 CB22 CB28 CB47 CB51 CB53 CB69 CC01 EA26 FA02 4F033 QA05 QB02Y QB03X QB12Y QB17 QD02 QD15 QE06

Claims (3)

[Claims] An injection nozzle (6) having a gas-liquid injection port (5) is provided above a gas-liquid injection pipe (2) provided at a lower end thereof.
A gas-liquid supply section (11) comprising a liquid passage (9) having a respective on-off valve (7, 8) therein and a ventilation passage (10).
The on-off valves (7, 8) are operated by operating levers (1).
5, 16), and the operation levers (15, 16) are provided with stoppers (3, 8) for maintaining the open state of the on-off valves (7, 8) and releasing them.
6, 37), wherein the gas-liquid injector is pivotally supported. 2. The stoppers (36, 37) are configured such that when the on-off valves (7, 8) are opened by a gripping operation of the operation levers (15, 16), the tip protrusions (36a, 37).
a) is pressed and locked to the outer surface (11a) of the gas-liquid supply section (11) to prevent the operation levers (15, 16) from returning. 2. The gas-liquid injector according to claim 1, wherein the gas-liquid injector is configured to be automatically released by a gripping operation. 3. A grip (36b, 37b) is formed in the direction of the rear end of the stopper (36, 37), and the tip is pressed and locked to the outer side surface (11a) of the gas-liquid supply unit (11). As compared with the convex portion (36a, 37a) side, the grip portion (3
The gas-liquid injector according to claim 2, wherein the side (6b, 37b) is configured to be heavy.