JP2000232811A - Gas and liquid injector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas and liquid injector which simultaneously injects air, a chemical solution, etc. into soil, improves fertilizing, controlling and disinfecting effects, etc. by its synergistic effects, can ejects air, the chemical solution, etc., individually, is compact and readily handleable. SOLUTION: An air route 2 and a solution route 3 are made to communicate with the top of an injecting pipe 1 having an injecting hole 4 equipped with an air jetting hole 4a and a jetting hole 4b for a chemical solution, etc. at the bottom and provided with the air route 2 and the solution route 3 in the inside. An air route 2a and a solution route 3a having on-off valves 6 and 7 in the inside, respectively are installed at a fixed interval. The air route 2a and the solution route 3a are individually extended to the interiors of operation handles 8 and 9 arranged at both sides of the routes. One operation handle 8 is used as a connection part 8a for an air charging apparatus and the other handle 9 is used as a connecting part 9a for a solution charging apparatus. Opening and closing levers 24 of the on-off valves 6 and 7 are graspably placed at the lower part of the operation handles 8 and 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid injector capable of individually or simultaneously injecting air, liquid fertilizer, chemicals and the like into soil such as an orchard or a field.

[0002]

2. Description of the Related Art In orchards and fields, liquid fertilizer is used in soil.
A chemical solution or the like (hereinafter, referred to as “chemical solution or the like”) is injected to control scabs or the like and disinfect the soil, or to inject air to activate the soil. Conventionally, injection of a chemical solution or the like has been performed by injection of only the chemical solution or the like, or by air injection using an ejector effect or compressed air. In addition, a device for injecting air into soil to activate the soil is also provided (see Japanese Utility Model Publication No. 61-41531, Japanese Patent Application Laid-Open No. 8-56402, etc.).

[0003]

It is difficult to inject a sufficient amount of the chemical or the like or the air by the injection of the chemical or the like alone or the injection of the chemical by the air injection utilizing the ejector effect. . In addition, a device that only injects air into soil has a problem that its use is limited.

The present invention has been made in view of the above circumstances, and air and a chemical solution are simultaneously injected into soil, and the synergistic effects thereof can improve fertilization, control, and disinfection effects. In addition, an object of the present invention is to provide a compact and easy-to-handle gas-liquid injector that can individually inject air or a chemical solution.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an injection nozzle provided with an air injection port and a chemical liquid injection port at a lower end, as described in claim 1, Above the injection pipe in which the first ventilation path and the first liquid path are formed, a second ventilation path communicating with the first ventilation path and the first liquid path, each having an on-off valve therein, and A second liquid passage is formed at a required interval, and the second air passage and the second liquid passage are individually extended inside operation handles provided on both sides thereof, and the one operation handle is connected to an air supply device. And the other operation handle is a liquid supply device connecting portion, and the open / close levers of the respective on / off valves are arranged so as to be grippable below the both operation handles.

According to the first aspect of the present invention, it is possible to simultaneously inject air and a chemical solution into the soil, and it is possible to increase the injection area. That is, when simultaneously injecting air and a chemical solution into the soil, the open / close levers of the open / close valves respectively slidably disposed below the operation handles may be simultaneously gripped.

As a result, the two on-off valves are simultaneously opened, and the compressed air from the air supply device such as a compressor is supplied to the air supply hose, the inside of the one operation handle, and the second air conditioner including the on-off valve. The air is injected from the air injection port of the injection nozzle through the two ventilation paths and the first ventilation path inside the injection pipe.

At the same time, a medicinal solution or the like from a liquid supply device such as a liquid pump is supplied to the liquid supply hose, the inside of the other operation handle, the second liquid passage containing the open / close valve, and the inside of the injection pipe. The liquid is injected from the injection port of the liquid medicine or the like of the injection nozzle through the first liquid passage. In addition, when individual injection of air and a chemical solution or the like is required due to soil properties or the like, the open / close lever of the open / close valve corresponding to the air supply device and the liquid supply device may be squeezed. Are also very easy to handle.

In one embodiment of the present invention, the first air passage and the first liquid passage inside the injection pipe are formed in a double tubular shape. According to the second aspect, the injection tube is configured to be compact, and the injection into the soil can be labor-saving.

According to an embodiment of the present invention, a detachable link lever is provided between the open / close levers of the two open / close valves so as to interlock the other operation lever by operating the one operation lever. Is interposed. According to the second aspect, air and chemicals can be simultaneously injected into the soil by only one-handed operation of the one operation lever.

According to an embodiment of the present invention, the injection pipe is provided with a cover-shaped cover which is slidable up and down. According to the fourth aspect, even if the soil, the chemical, or the like is blown up to the ground for some reason during the injection of the air, the chemical, or the like, the work is not scattered to the worker side. This protects workers and prevents work clothes from being contaminated.

According to a fifth aspect of the present invention, there is provided a stopper which is slidable up and down and can be fixed at a position above the cover-shaped cover of the injection tube and which restricts the rise of the cover-shaped cover. It is provided. According to the fifth aspect, by setting the stopper at a position corresponding to the required deepest depth of the injection nozzle, the effect of the bowl-shaped cover from zero insertion depth to the deepest depth of the injection nozzle can be obtained. It can be fully demonstrated.

That is, in the above embodiment, when the injection pipe is inserted into the soil, only the injection pipe is lowered while the cover-shaped cover is in contact with the ground or the like. The cover is shaped to slide upward, and is eventually locked by the stopper to restrict its rise. At the same time, the injection pipe, specifically, the injection nozzle 4 cannot be pierced further into the soil, and the depth of injection of air, chemicals, and the like thereafter is maintained at a fixed position.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a partially omitted overall perspective view showing an embodiment of a gas-liquid injector according to the present invention, FIG. 2 is an enlarged perspective view of a main part in which an injection pipe connecting part is disassembled, and FIG. FIG. 4 is an exploded perspective view of a link lever portion, and FIG. 5 is a partial cross-sectional view of an injection nozzle portion showing a use state.

The gas-liquid injector according to the embodiment of the present invention shown in FIG. 1 has an injection pipe 1 as shown in FIGS.
, A first gas passage 2 and a first liquid passage 3 are provided in a double tubular shape.

The injection tube 1 has a length and an appropriate diameter which allow an operator to grip operation handles 8 and 9 described later with both hands and insert an injection nozzle 4 detachably provided at the lower end into the soil so that it can be easily inserted into soil. The inside of the small diameter pipe 5 provided in the injection pipe 1 is, for example, the first liquid passage 3.
The space formed between the small-diameter pipe 5 serving as the first liquid passage 3 and the inner peripheral surface of the injection pipe 1 is the first air passage 2.

In the figure, reference numeral 4a denotes a gas injection port which communicates with the first air passage 2, and 4b denotes a liquid injection port which communicates with the first liquid passage 3. Note that the configurations of the first ventilation passage 2 and the first liquid passage 3 may be opposite to the above.

Further, the upper part of the injection pipe 1 is connected to the first air passage 2 and the first liquid passage 3, and the second air passage 2a and the second air passage 2a respectively having on-off valves 6 and 7 therein. The liquid passages 3a are formed at a predetermined interval from each other, and the second ventilation passages 2a and the second liquid passages 3a are connected to operation handles 8 and 9 provided on both sides of the second communication passages 8b and 9b. And 9b separately.

In one embodiment of the drawings, the second air passage 2
a and the second liquid passage 3a, and the operation handle 8
And 9 parts are connected to the first ventilation passage 2 inside the injection pipe 1.
And an intermediate member 10 having a small-diameter gas passage 2b and a small-diameter liquid passage 3b communicating with the first liquid passage 3, and the intermediate member 10 is connected to an upper end of the injection pipe 1 by a joint 1
They are integrally connected by one.

Further, the one operation handle 8 is, for example, an air supply device connection portion 8a such as a compressor (not shown), and the other operation handle 9 is a liquid supply device connection portion 9a such as a liquid pump (not shown). You. In the figure, 12 is
An air supply hose extended from the air supply device (not shown), 1
Reference numeral 3 denotes a liquid supply hose extended from the liquid supply device (not shown).
Is.

Next, details of the on-off valves 6 and 7 will be described. The on-off valves 6 and 7 are provided in the second air passage 2a and the second liquid passage 3a so as to be vertically movable. That is, shafts 16 and 17 on which coil springs 14 and 15 are wound are respectively connected to the upper portions of the on-off valves 6 and 7, and the on-off valves 6 and 7 located at the lower ends of the shafts 16 and 17 are pressed from above. The intermediate member 1
0 and the small-diameter liquid passage 3b
Is closed.

The upper portions of the shafts 16 and 17 correspond to the second air passage 2a and the second liquid passage 3 respectively.
a penetrating plug bolts 18 and 19 for closing the upper end of the second liquid passage 3a, and drooping pieces 20a respectively hanging on both front and rear outer sides of the second air passage 2a and the second liquid passage 3a.
And the connecting portions 20b and 21b of the downwardly U-shaped metal fittings 20 and 21 having the U-shaped and 21a. In the figure, 22 and 23 are stoppers provided at the upper ends of the shafts 16 and 17.

Next, the open / close lever of the open / close valves 6 and 7 will be described.
24 and 25 are arranged so that the operator can operate it while holding the operation handles 8 and 9. here,
The opening / closing levers 24 and 25 are provided below the operation handles 8 and 9 so as to be gripped by the operator's hands. In the embodiment shown in the drawings, the tip direction of each of the opening and closing levers 24 and 25 is the same as that of the intermediate member 10.
Are formed into two forked portions 24a and 25a for receiving the second air passage 2a and the second liquid passage 3a, respectively, and the ends thereof are pivotally supported between the air passage 2a and the liquid passage 3a by screws 26. The intermediate portions of the opening / closing levers 24 and 25 are respectively provided with the U-shaped brackets 20 and 21.
Are screwed to the lower ends of the hanging pieces 20a and 21a by screws 27 and 28, respectively.

In the above configuration, the on-off valves 6 and 7
Is driven by the resilient force of the coil springs 14 and 15 wound around the shafts 16 and 17, respectively.
The small-diameter air passage 2b and the small-diameter liquid passage 3
b is closed.

In the above construction, when the opening / closing levers 24 and 25 are pulled toward the operation handles 8 and 9 by fingers, the U-shaped brackets 20 and 21 are pushed up, and the U-shaped brackets 20 and 21 are pushed up. Are connected to the stoppers 22 and 23 provided at the upper ends of the shafts 16 and 17 by being raised along the shafts 16 and 17, respectively. Further, the on-off valves 6 and 7 are pulled up.

Therefore, the small-diameter air passage 2b and the small-diameter liquid passage 3b formed in the intermediate member 10 are opened, and the first air passage 2 and the first liquid passage 3 in the injection pipe 1 are opened. Air and chemicals are injected simultaneously from the air injection port 4a and the chemicals injection port 4b provided in the injection nozzle 4 via the injection nozzle 4, thereby increasing the injection area as compared with the individual injection of air and chemicals. it can.

Further, as another preferred embodiment, one open / close lever, for example, the one open / close lever-2 is provided between the open / close levers 24 and 25 of the open / close valves 6 and 7.
By the operation of 5, a detachable link lever 29 for interlocking the other open / close lever 24 is interposed.

As shown in FIGS. 2 and 4, the link lever 29 is bent in the shape of a letter "K", and a long hole 30 is provided at a substantially middle portion thereof. A contact portion 31 is formed at an end on the side of the other end to be engaged with a lower side of the other opening / closing lever 24, and the long hole 30 is provided with the screw 28 pivotally supporting the one opening / closing lever 25. To the extension 28a.

The contact portion 31 of the link lever 29 is configured to be able to engage and disengage with the lower side of the other open / close lever 24. That is, the link lever
A positioning pin 32 is provided at an end of the abutting portion 31 opposite to the abutting portion 31 so as to protrude toward the one operation handle 9 side, and a pin holder portion provided with the positioning pin 32 provided on the one operation handle 9 side 33, it is inserted and supported so that it can be inserted and extracted freely.

Further, a circumferential groove 34 is formed at an appropriate position of the positioning pin 32, and a positioning ball 36 pressed by a spring 35 (FIG. 3) provided in the pin holder 33 into the circumferential groove 34. Is adapted. In the figure,
37 is a holding bolt for the spring 35.

As shown in FIG. 4, the link lever 29 having the above-mentioned structure is moved from the mounted state shown in FIG.
It can be pulled out from the 4 and 25 sides and removed. That is, in the state shown in FIG.
Are positioned on the side of the opening / closing levers 24 and 25, and are positioned in the circumferential grooves 34 of the positioning pins 32.
The abutment portion 31 of the link lever 29 is engaged with the lower side of the other opening / closing lever 24.

Accordingly, when the one opening / closing lever 25 is pulled toward the one operating handle 9 by a finger, first, the shaft 17 and the opening / closing valve 7 are lifted up through the U-shaped metal fitting 21 to thereby lift the shaft. The on-off valve 7 is opened. At the same time, the contact portion 31 of the link lever 29
Is lifted with the positioning pin 32 as a fulcrum,
The contact portion 31 engages with the lower side of the forked shape 24a in the tip direction of the other opening / closing lever 24 to push up the forked shape 24a. As a result, the U-shaped metal fitting 2
The shaft 16 and the on-off valve 6 are lifted up through 0, and the on-off valve 6 is opened.

As described above, when the on-off valves 6 and 7 are opened, air and a chemical solution are simultaneously injected into the injection nozzle 4.
Are jetted from the air jet port 4a and the chemical liquid jet port 4b. Of course, in the above-mentioned state, both the open / close levers 24 and 25 may be operated simultaneously, and the other open / close lever 24 can always be operated independently.

Next, the link lever 29 is separated from the opening / closing levers 24 and 25, and the contact portion 31 provided on the link lever 29 and the other end of the opening / closing lever 24 in the direction of the other end are opened. When the engagement with the bifurcated shape 24a is released, the two open / close levers 24 and 25 can be operated independently, and the injection amounts of air, chemicals, and the like can be freely adjusted.

FIG. 5 shows an embodiment in which the injection tube 1 is provided with a cover 38 which is slidable up and down. The cover 38 is formed of metal, plastic, or the like, and is attached to the injection pipe 1 in advance in assembling the apparatus.

The cover 38 is provided so as not to come off from the lower end of the injection tube 1.
In the same figure, since the outer diameter of the injection nozzle 4 detachably provided at the lower end is configured to be larger than the outer diameter of the injection tube 1, when the injection place is moved or carried, the prone bowl shape is formed. The cover 38 does not come off from the lower end of the injection tube 1.

The cover 38 is attached to the injection tube 1.
Is provided, even if the soil or the chemical solution is blown up to the ground for some reason during the work, it is prevented from being scattered to the worker side, and further, the contamination of the work clothes is prevented.

Further, FIG. 5 shows a stopper which is slidable up and down and can be fixed in position above the cover-shaped cover 38 of the injection tube 1 and which restricts the rise of the cover-shaped cover 38. 39 are provided. In the embodiment shown in the drawings, the injection tube 1 comprises a vertically movable ring 40 and a fixed push screw 41 screwed to the ring 40. The stopper 39 is provided at an appropriate position on the injection tube 1.
Is configured to be fixed.

When the stopper 39 is provided in the injection pipe 1, the insertion depth of the injection pipe 1, specifically, the injection nozzle 4 from the ground GL can be freely changed from zero to the required maximum depth. However, the effect of the cover 38 can be sufficiently exhibited.

[0040]

According to the present invention, air and liquid fertilizer can be simultaneously injected into soil, and the synergistic effect can improve the fertilization, control and disinfection effects, and individual injection is also possible. There is a compact and easy-to-handle effect.

[Brief description of the drawings]

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

FIG. 2 is an enlarged perspective view of a main part in which an injection pipe connecting part is disassembled.

FIG. 3 is a longitudinal cross-sectional view of a main part partially omitted.

FIG. 4 is an exploded perspective view of a link lever portion.

FIG. 5 is a partial cross-sectional view of an injection nozzle showing a use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection pipe 2, 2a Ventilation passage 3, 3a Liquid passage 4 Injection nozzle 4a Air injection port 4b Liquid fertilizer injection port 6,7 On-off valve 8,9 Operation handle 8a, 9a Connection part 24,25 Operation lever 29 Link lever 38 Cover-down bowl-shaped cover 39 Stopper

[Procedure amendment]

[Submission date] February 25, 1999 (1999.2.2
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

It is difficult to inject a sufficient amount of air or other gas by injecting only the chemical or the like, or injecting the chemical or the like by air injection using the ejector effect. . In addition, a device that only injects air into soil has a problem that its use is limited.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

The present invention has been made in view of the above circumstances, and it is intended to simultaneously inject air and the like and a chemical solution into the soil, and to improve fertilization, control, and disinfection by synergistic effects. An object of the present invention is to provide a compact and easy-to-handle gas-liquid injector that can perform individual injection of air, a chemical solution, and the like.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

In one embodiment of the present invention, the first air passage and the first liquid passage inside the injection pipe are formed in a double tubular shape. According to the second aspect, together with the injection tube is made compact, inclusive stab is labor-saving manner rows of obtaining into the soil.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] In the form of the previous SL embodiment, when inserting the infusion tube into the soil, the horizontal-bowl-shaped cover - is, only the injection tube in contact or the like with the ground is lowered, the relative infusion pipe The lie-down bowl-shaped cover is slid upward,
Eventually, the stopper is locked to the stopper and its rise is regulated. At the same time, the injection pipe, specifically, the injection nozzle 4 cannot be pierced further into the soil, and the depth of injection of air, chemicals, and the like thereafter is maintained at a fixed position.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

The gas-liquid injector according to the embodiment of the present invention shown in FIG. 1 has an injection pipe 1 as shown in FIGS.
, A first air passage 2 and a first liquid passage 3 are provided in a coaxial double tubular shape.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

In the figure, reference numeral 4a denotes a gas injection port which communicates with the first air passage 2, and 4b denotes a liquid injection port which communicates with the first liquid passage 3. Incidentally, the first air passage 2 as the configuration of the first copies liquid passage 3 may be opposite to the.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Further, the upper part of the injection pipe 1 is connected to the first air passage 2 and the first liquid passage 3, and the second air passage 2a and the second air passage 2a respectively having on-off valves 6 and 7 therein. liquid paths 3a is configured with a predetermined distance from each other, further wherein the second air passage 2a and the second through fluid path 3a is inside of the operating handle 8 and 9 provided on both sides of it, such as, communication holes 8b and 9b separately.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

Further, the outer end of the one operation handle 8
8a is an air supply device such as a compressor (not shown)
Is a connection portion between the outer end portion of the other of the operating handle 9
Reference numeral 9a is a connection portion with a liquid supply device such as a liquid pump (not shown). In the drawing, reference numeral 12 denotes an air supply hose extended from the air supply device (not shown), and reference numeral 13 denotes a liquid supply hose extended from the liquid supply device (not shown).

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

Next, details of the on-off valves 6 and 7 will be described. The on-off valves 6 and 7 are provided in the second air passage 2a and the second liquid passage 3a so as to be vertically movable. That is, shafts 16 and 17 on which coil springs 14 and 15 are wound are respectively connected to the upper portions of the on-off valves 6 and 7, and the on-off valves 6 and 7 located at the lower ends of the shafts 16 and 17 are pressed from above. The intermediate member 1
0 formed on the has the small-diameter air passage 2b and configured for closing said small diameter liquid passing path 3b.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

In the above configuration, the on-off valves 6 and 7
Is the elastic force of the coil spring 14 and 15 wound on the shaft 16 and 17, closes the said small-diameter vent formed in the intermediate member 10 passage 2b and the small-diameter liquid passing path 3b.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

[0026] Thus, the intermediate member formed in said 10 small diameter air passage 2b and the small-diameter liquid passing passage 3b is opened, the infusion the first air passage of the tube 1 2 and the first copies liquid passage 3 The air and the chemical solution pass through the injection nozzle 4
Air injection port 4a and chemical liquid injection port 4b
, And the injection area can be enlarged as compared with the individual injection of air and a chemical solution.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

[0033] In as described above, the two on-off valve 6 and 7
Is opened, air and chemicals are simultaneously ejected from the air injection port 4a of the injection nozzle 4 and the chemicals etc. injection port 4b. Of course, in the above-mentioned state, both the open / close levers 24 and 25 may be operated simultaneously, and the other open / close lever 24 can always be operated independently.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

The cover 38 is provided so as not to come off from the lower end of the injection tube 1.
In the figure, the outer diameter of the injection nozzle 4 provided detachably on the lower end, because it is rather larger than the outer diameter of the injection tube 1, at the time of injection sites mobile and portable or the like, the horizontal-bowl-shaped The cover 38 does not come off from the lower end of the injection tube 1.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

When the stopper 39 is provided in the injection pipe 1, the insertion depth of the injection pipe 1, specifically, the injection nozzle 4 from the ground GL can be freely changed from zero to the required maximum depth. However , the effect of the cover 38 can be sufficiently exerted.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeo Tsukada 1-7-2 Suehirocho, Ome City, Tokyo Co., Ltd. (72) Inventor Naoki Chiba 1-7-2, Suehirocho, Ome City, Tokyo Co., Ltd. (72) Inventor Kazuhiro Fukuizumi 1-7-2 Suehirocho, Ome-shi, Tokyo F-term (reference) 2B052 BC07 FA08 FA09 2B121 CB15 CB23 CB42 CB45 CB53 CB62 CB69 CC31 EA26 FA02 FA20

Claims (5)

[Claims] An injection nozzle (4) provided with an air injection port (4a) and a chemical liquid injection port (4b) at its lower end,
The first air passage (2) and the first liquid passage (3) are provided above the injection pipe (1) in which the first air passage (2) and the first liquid passage (3) are formed. A second air passage (2a) and a second liquid passage (3a), which are in communication with each other and have on-off valves (6) and (7) therein, are formed at predetermined intervals, and the second air passage (2a) And the second liquid passageway (3a) is individually extended inside the operation handles (8), (9) provided on both sides thereof, and the one operation handle (8) is connected to the air supply device connecting portion (8a).
The other operation handle (9) is a liquid supply device connecting portion (9a), and the respective on-off valves (6),
The gas-liquid injector according to claim 7, wherein the open / close levers (24) and (25) of (7) are respectively arranged so as to be graspable below the operation handles (8) and (9). 2. The method according to claim 1, wherein the first gas passage (2) and the first liquid passage (3) inside the injection pipe (1) are formed as a double tube. Gas-liquid injection machine. 3. An open / close lever (2) between the open / close levers (24) and (25) of the open / close valves (6) and (7).
The gas-liquid injector according to claim 1 or 2, wherein a detachable link lever (29) interlocking the other opening / closing lever (24) by the operation of 5) is interposed. 4. A gas-liquid injector according to claim 1, wherein said injection pipe (1) is provided with a cover-shaped cover (38) slidable up and down. 5. The cover-shaped cover of the injection tube (1).
A stopper (39), which is slidable up and down and fixed in position, is provided above the cover (38) for restricting the rise of the cover-shaped cover (38).
The gas-liquid injection device according to item 1.