KR102162839B1 - Complex valve for pneumatic fender - Google Patents

Abstract

Provided in one embodiment is a complex valve for a pneumatic fender, and more specifically, a pneumatic fender which is installed at a berth of a dock to provide a buffering function when a vessel is collided against the berth. To this end, the present invention comprises: an accommodating chamber disposed at the end portion of the pneumatic fender and controlling entrance and exit of air; a valve body installed to be separable from the accommodating chamber, and allowing the accommodating chamber and the inside of the pneumatic fender to communicate with each other, wherein an air inlet is disposed to allow air to be introduced therein; a safety valve installed at the accommodating space disposed at the upper portion of the valve body, and having an outlet to discharge air through the valve body to the outside in case that the internal pressure of the pneumatic fender is above a predetermined pressure; a ball arranged at the lower portion of the safety valve in the valve body to open and close the gap between the inside of the pneumatic fender and the safety valve; an opening and closing valve arranged at the lower portion of the safety valve in the valve body to control the rotation of the ball; and a control lever connected to the opening and closing valve to enable rotation by a user. Here, the ball has a penetrating flow path which penetrates the central portion to allow the inside of the pneumatic fender and the safety valve to communicate with each other. The opening and closing of the opening and closing valve is controlled depending on the change of the angle of the penetrating flow path in accordance with the rotation of the ball. Moreover, all of the opening and closing valve, the safety valve, and the air inlet are disposed at the valve body to reduce the volume and weight of the accommodating chamber. Therefore, a malfunction test of the safety valve can be performed without separating the safety valve from the accommodating chamber of the pneumatic fender.

Description

Composite valve for pneumatic insect repellent {COMPLEX VALVE FOR PNEUMATIC FENDER}

The present invention relates to a composite valve for a pneumatic insect repellent, and more specifically, to a composite valve for a pneumatic insect repellent capable of reducing the volume and weight of the accommodation chamber by providing all of the opening and closing valves, safety valves, and air inlets in the valve body.

A pneumatic insect repellent sealed with an appropriate amount of air is placed between the ship and the berth or between the ship and the ship to absorb the flow energy of the ship and make the ship safe. There is a risk of damage to the insect repellent if the flow energy of the ship is exceeding the limit that the insect repellent can absorb. A safety valve is installed to prevent such damage. (Korean Patent Laid-Open Publication No. 10-2009-0016036)

Pneumatic insect repellent periodically replenishes air to maintain a predetermined internal pressure. However, in order to check whether the safety valve is abnormal in the insect repellent in use, after discharging the internal pressure of the insect repellent to the outside air, separate the safety valve from the containment chamber of the insect repellent, check the opening pressure of the safety valve, and repair it. Install it, put an appropriate amount of air inside the insect repellent, and seal it for use. Such maintenance has a problem of consuming a lot of cost and time.

In order to solve this problem, as shown in FIG. 2 of Korean Patent Laid-Open Publication No. 10-2016-0102575, the on-off valve 9 is formed on the partition wall 7 constituting the accommodation chamber 8 by the pressing member 10. There have been attempts to test the opening pressure of the safety valve of the pneumatic insect repellent in use by closing the through hole 7a, or to remove the safety valve in some cases.

However, in the case of a mouthpiece having the structure described in Korean Patent Application Publication No. 10-2016-0102575, it is closed by a pressurizing member (5% or more and 20% or less of the initial internal pressure) due to the frequent flow energy of the ship below the safety valve opening pressure. The on-off valve 9 repeats the operation of opening and closing numerous times. Due to this, it is difficult to test the safety valve opening pressure due to air leakage due to deformation of the pressurizing member, abrasion of the on/off valve 9, and damage to the partition wall 7 adjacent to the through hole 7a formed in the accommodation chamber 8. The seat portion corresponding to the on-off valve is formed directly in the partition wall 7 adjacent to the through hole 7a formed in the accommodation chamber 8, so when the on-off valve and the seat portion are damaged, the entire accommodation chamber 8 of the mouthpiece is separated from the insect repellent. There was a problem that needs to be repaired. In addition, since the opening/closing valve is always in the closed position by the pressurizing member, there is a problem in that an additional communication path 11 must be installed in order to supplement the air pressure inside the insect repellent.

In addition, as shown in Fig. 3 of Korean Patent Laid-Open Publication No. 10-2016-0138386, the through hole 7a formed in the partition 7 constituting the accommodation chamber 8 by using the fixing member 5b ) To test the opening pressure of the safety valve of the pneumatic insect repellent in use, or in some cases, attempts to remove the safety valve.

However, the opening and closing valve is formed directly in the partition wall 7 adjacent to the through hole 7a formed in the accommodation chamber 8 in the mouthpiece structure having the structure described in Korean Patent Application Publication No. 10-2016-0138386. And when the seat portion is damaged, there is a problem in that the entire receiving chamber 8 of the detention unit must be separated from the insect repellent and repaired.

In addition, as described in Korean Patent Publication No. 10-1882378, the thickness direction passage hole 217b formed in the body 210 is closed using the disk 240 of the on-off valve 200 to prevent the safety valve of pneumatic insect repellent in use. Attempts have been made to test the opening pressure or, in some cases, to remove the safety valve.

However, for the installation of the safety valve and the opening/closing valve, the upper wall 121, the lower wall 123, the lower wall installation part 123a, and the side wall in the accommodation chamber 120 for the installation of the safety valve and the opening/closing valve. (124), the structure of the protruding plate 125 has a problem in that the manufacturing cost and weight are increased more than twice.

A common feature of the structures described in Korean Patent Publication 10-2016-0138386, Korean Patent Publication 10-2016-0102575, and Korean Patent Publication 10-1882378 is a desired function only when the safety valve and the on-off valve are mounted in the accommodation chamber. There was a downside to doing it.

Republic of Korea Patent Publication 10-2009-0016026 Republic of Korea Patent Publication 10-2016-0138386 Republic of Korea Patent Publication 10-2016-0102575 Republic of Korea Patent Publication 10-1882378

The present invention is to solve the above problems, and a test of the presence or absence of an abnormality of the safety valve mounted in the receiving chamber of the pneumatic insect repellent in use state can be carried out without separating the safety valve from the receiving chamber of the pneumatic insect repellent. It is intended to provide a composite valve for pneumatic insect repellent that enables the safety valve to be separated and installed from the accommodation chamber of the pneumatic insect repellent without releasing the pressure inside the insect repellent.

The present invention, in order to solve the above problems, in a pneumatic insect repellent that is installed in the berth of the pier and serves as a buffer when a collision between the ship and the berth, the accommodation chamber provided at the end of the pneumatic insect repellent to control the entry of air ; A valve body that is installed to be detachable from the accommodation chamber, communicates the interior of the pneumatic insect repellent with the accommodation chamber, and has an air inlet through which air is injected; A safety valve installed in an accommodation space provided above the valve body and provided with an outlet for discharging air to the outside through the valve body when the internal pressure of the pneumatic insect repellent is equal to or higher than a preset pressure; A ball disposed below the safety valve in the valve body to open and close the interior of the pneumatic insect repellent and between the safety valve; An on/off valve disposed below the safety valve in the valve body to control rotation of the ball; And an operation lever connected to the opening/closing valve to enable rotation by a user, wherein the ball is provided with a through passage for communicating between the inside of the pneumatic insect repellent and the safety valve through the center, Opening and closing of the opening/closing valve is controlled according to the angle change of the through passage according to the rotation of the ball, and the opening/closing valve, safety valve, and air inlet are all provided in the valve body to reduce the volume and weight of the accommodation chamber. Provides a combination valve.

For example, in the valve body, a connection passage through which the through passage is connected may be provided under the safety valve.

For example, the on-off valve includes a valve stem having one end coupled to at least a portion of the ball and the other end coupled to the operating lever, and the rotational force of the operating lever is transmitted to the valve stem, thereby The ball coupled to is rotated at a predetermined angle so that the opening and closing of the through passage can be controlled.

The present invention also provides a method for checking a pneumatic insect repellent using the above-described composite valve, by operating the operation lever to close the opening/closing valve; Checking whether the on/off valve leaks with a pressure gauge attached to a pressure gauge connector provided on the valve body; Checking the opening pressure of the pressure gauge by supplying compressed air to the receiving space in which the safety valve is disposed through the air inlet, and closing the opening/closing valve by operating the operation lever of the pneumatic insect repellent It provides a method of checking a pneumatic insect repellent that is performed without releasing internal pressure.

For example, it may further include replacing the safety valve without releasing the air inside the pneumatic insect repellent to the atmosphere.

According to an embodiment of the present invention, even in the case of a composite valve installed in a receiving chamber of a pneumatic insect repellent and in use, it is possible to check the presence or absence of a safety valve simply by simply operating the operation lever of the on/off valve.

In addition, the present invention does not separate the safety valve from the pneumatic insect repellent in order to periodically check the operation of the safety valve, but closes the opening and closing valve of the composite valve communicating inside the pneumatic insect repellent to block the pressure in communication with the inside of the pneumatic insect repellent. And, by supplying compressed air through the air inlet, you can test the opening pressure of the safety valve while checking the pressure gauge through the pressure gauge connector.In some cases, when repair or replacement of the safety valve is required, do not release the air inside the insect repellent to the atmosphere. By performing without, the workability can be greatly improved.

In addition, even when a problem occurs in the on/off valve of the composite valve, it is possible to significantly save time and cost by easily separating the composite valve from the accommodation chamber of the pneumatic insect repellent, repairing and replacing it.

1 is a cross-sectional view of a pneumatic insect repellent according to an embodiment of the present invention.
2 is a plan view of a pneumatic insect repellent according to an embodiment of the present invention.
3 is a cross-sectional view of a bracket of a pneumatic insect repellent according to an embodiment of the present invention.
4 is a cross-sectional view of a composite valve in an open state according to an embodiment of the present invention.
5 is a cross-sectional view of a composite valve in a closed state according to an embodiment of the present invention.

Hereinafter, a composite valve of a pneumatic insect repellent according to the present invention will be described with reference to the accompanying drawings.

In the present invention, the pneumatic insect repellent in a normal use state refers to a state in which the opening/closing valve is open, and in this case, the internal pressure of the pneumatic insect repellent affects the pressure applied to the safety valve installed in the accommodation space. When the internal pressure is applied above the preset pressure, the safety valve is opened and the air inside the pneumatic insect repellent is released to the atmosphere to protect the pneumatic insect repellent.

1 and 2 are cross-sectional views and plan views, respectively, of a pneumatic insect repellent according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, the pneumatic insect repellent 100 includes a bracket 400 provided on at least one side, and an accommodation chamber 120 installed in the bracket 400.

At least one bracket 400 may be installed, for example, may have a cylindrical concave shape, and an opening may be covered with a lid installed with a bolt or the like.

The accommodation chamber 120 may be fixedly installed on the bracket 400, and the accommodation chamber 120 may be a space defined by a lower plate 122 and a side plate 123 extending upward from the ends of the lower plate 122. . At this time, a composite valve 200 is installed in the accommodation chamber 120, and a specific configuration will be described later.

The protrusion plate 121 is in the form of a plate extending from the top of the side plate 123 to the outside of the pneumatic insect repellent 100, and after being seated on the bracket 400, it may be fixed to the bracket 400 by bolting or the like. .

The protruding plate 121 may have a flange shape parallel to the lower plate 122. Accordingly, the protrusion plate 121 is seated on at least a portion of the bracket 400, and a structure in which the side plate 123 and the lower plate 122 are disposed inside the pneumatic insect repellent 100 is applied, and the accommodation chamber 120 May be formed inside the pneumatic insect repellent 100.

3 is a cross-sectional view of the accommodation chamber 120 of the pneumatic insect repellent 100 according to an embodiment of the present invention.

Referring to FIG. 3, the accommodation chamber 120 may have a space defined by the lower plate 122 and the side plate 123 extending upward from the ends of the lower plate 122 as described above, and in the defined inner space. The composite valve 200 may be installed. For example, the lower plate 122 may be provided with an installation portion in which the composite valve 200 may be installed. For example, a through hole may be provided in the lower plate 122 to allow air to move between the interior 110 of the pneumatic insect repellent and the composite valve 200.

The composite valve 200 is capable of communicating the interior 110 and the accommodation chamber 120 of the pneumatic insect repellent, and may be installed on the upper portion of the lower plate 122 provided with the through hole. Accordingly, at least a part of the composite valve 200, for example, the operation lever 25 of the on/off valve 20 to be described later, protrudes away from the valve body 10 of the composite valve 200, thereby allowing the user to It is possible to easily check whether the opening or closing of the 200 is open from the outside, and whether or not the safety valve 30 is abnormal without separating the safety valve 30 from the pneumatic insect repellent 100 can be checked. In addition, the composite valve 200 has an effect of significantly reducing the volume and weight of the accommodation chamber 120 by integrating the functions of the on/off valve 20, the safety valve 30, and the air inlet 12b to be described later. That is, the on/off valve 20, the safety valve 30, and the air inlet 12b are all provided in the valve body 10 to reduce the volume and weight of the accommodation chamber 120.

The composite valve 200 according to the present invention can achieve remarkable effects with a structure differentiated from the prior art, and will be described later in detail.

4 and 5 are cross-sectional views of a composite valve 200 according to an embodiment of the present invention. As disclosed in each drawing, the composite valve 200 according to an embodiment includes a valve body 10, an opening/closing valve 20, a safety valve 30, an air inlet 12b, and a pressure gauge connector 12c. . Hereinafter, this will be described in detail.

The valve body 10 is a passage through which air moves, and various valves may be installed.

The valve body 10 includes a first body 11 disposed at a lower portion and a second body 12 disposed at an upper portion, and the first body 11 and the second body 12 have an integral structure. I can. For example, the second body 12 may be provided above the first body 11.

The first body 11 may be provided with a first body flange 11b that constitutes a lower portion of the first body 11 and protrudes in the lateral direction of the first body 11.

The first body flange 11b is for firmly fixing the composite valve 200 to the lower plate 122, and a through hole is formed in at least a portion of the first body flange 11b and may be bolted to the lower plate 122.

The bushing 13 may have a main inflow path 13a through which air is communicated between the interior 110 of the pneumatic insect repellent and the composite valve 200, and at a position where the main inflow path 13a is not formed. It may be fastened to the first body flange 11b.

A connection passage 11a is provided in the upper part of the first body 11. The connection passage 11a is for air movement of the first body 11 and the second body 12, for example, a cylindrical shape may be applied, and the lower part is connected to the through passage 21a to be described later, and the upper part is It may be connected to the second body 12. For example, the diameter of the connection passage 11a may be greater than or equal to the diameter of the through passage 21a. Accordingly, a flow path through which air passes from the lower part to the upper part of the first body 11 may be formed.

An on/off valve 20 to which the operation lever 25 is connected is installed on the first body 11. The on-off valve 20 is at least partially inserted into the first body 11 to open or close the flow of air.

As an example, a ball valve including a ball 21 may be applied as the on/off valve 20. The ball 21 is installed in the first body 11 and can open and close the through passage 21a by the operation of the operation lever 25. For example, the ball 21 may be rotated at a position within the first body 11.

For example, the valve stem 23 controls the operation of the ball 21 by the operation lever 25, and one end of the valve stem 23 is coupled to the side of the ball 21, and the other end is operated. It can be coupled to the lever 25. The operation lever 25 is coupled through the other end of the valve stem 23, and the rotational force of the operation lever 25 is transmitted to the valve stem 23 so that the ball 21 coupled to the valve stem 23 is By rotating at a predetermined angle, opening and closing of the through passage 21a, that is, opening and closing of the opening and closing valve may be controlled.

The second body 12 is located above the valve body 10, and a receiving space 12a in which the safety valve 30 can be inserted and installed inside the second body 12 is provided.

A plate-shaped second body flange 12d protruding in the lateral direction is provided above the second body 12. The second body flange 12d has a shape corresponding to the body 31 of the safety valve 30 to be described later, and the body 31 of the safety valve 30 is a second body flange 12d by bolting or the like. By being fixed to, the safety valve 30 can be stably fixed to and installed on the second body 12.

At the side of the second body 12, a pressure gauge connector 12c for installing an air inlet 12b for injecting air and a pressure gauge (not shown) for measuring the internal pressure of the pneumatic insect repellent 100 may be provided. have. For example, since the pressure gauge connector 12c is installed above the air inlet 12b, the pressure can be measured at the same time while the air is injected.

The safety valve 30 is inserted into the receiving space 12a of the second body 12 and bolted to the second body flange 12d.

The safety valve 30 protects the pneumatic insect repellent 100 by discharging the pressure reached to the set pressure by the flow energy of the ship to the atmosphere through the outlet 31d.

For example, the safety valve 30 includes a body 31, a disk 32, a stem 33, an adjustment nut 34, a spring support 35, and a compression spring 36.

The body 31 is a structure that supports the safety valve 30, and a through hole 31b is provided therein, the outside is seated in the accommodation space 12a in the second body 12, and the stem 33 is inside. ), adjustment nut 34, spring support 35, etc. are installed.

The stem 33 is a shape extending in the vertical direction within the second body 12, a threaded portion 33b is provided at the top, and has a section inclined outward from the stem 33 at a predetermined inclination at the bottom. An inclined end portion 33a is formed.

The spring support 35 is disposed at a position above the inclined end 33a of the stem 33, and has an inclined surface 35b having an inclination in a shape corresponding to the inclined end 33a of the stem 33. The spring support 35 has a through hole 35a in which the stem 33 can be inserted.

The threaded portion 33b of the stem 33 is inserted upward from the lower portion of the through hole 35a formed in the center of the spring support 35, so that the inclined surface 35b of the spring support 35 and the inclined end of the stem 33 ( 33a) to be combined.

One side of the compression spring 36 is coupled to the spring jaw 31a formed on the lower side of the body 31 of the safety valve 30 and the other side of the compression spring 36 is seated on the spring support 35. For example, the spring jaw 31a may have a stepped shape as shown in FIG. 4.

The disk 32 includes a disk guide 32a extending downward from a flat top, and the disk guide 32a is inserted downward from the top into the through hole 31b formed in the center of the body 31 May be seated on the body sheet 31c.

The threaded portion 33b of the stem 33 is inserted upward from the bottom into the through hole 32b formed in the center of the disk 32, and the nut portion 34a of the adjusting nut 34 is a through hole of the disk 32 It is inserted downward from the top to (32b) and is screwed with the threaded portion (33b) of the stem (33).

Accordingly, the safety valve 30 may adjust the set pressure by adjusting the compression amount of the compression spring 36 according to the rotation amount of the adjustment nut 34.

Thereafter, air is supplied to the inside of the pneumatic insect repellent 100 through the air injection valve 300 to expand it, and then it is coupled to the side of the berth or ship with a rope to be fixed.

Hereinafter, in the pneumatic insect repellent 100 having the composite valve 200 according to an embodiment of the present invention, a method for checking the presence or absence of the on/off valve 20 and the safety valve 30 of the composite valve 200 will be described. do.

Without releasing the internal pressure of the pneumatic insect repellent 100, by operating the operation lever 25 to close the on-off valve 20; The pressure gauge (not shown) attached to the pressure gauge connector 12c provided in the valve body 10 checks whether the on-off valve 20 leaks; It may include; supplying compressed air to the receiving space 12a in which the safety valve 30 is disposed through the air inlet 12b to check the opening pressure of the pressure gauge (not shown).

That is, unlike the prior art, in the present invention, it can be performed without releasing the internal pressure of the pneumatic insect repellent 100 for the test of the safety valve 30 periodically. For example, in the state that the internal pressure of the pneumatic insect repellent 100 is not released, the operation lever 25 of the on/off valve 20 is rotated to first check the closed position of the operation lever 25, and then the pressure gauge connector The leakage of the on-off valve 20 is checked through a pressure gauge (not shown) attached to (12c). When it is determined that there is no leakage of the on-off valve 20, the air injection valve 300 is slowly opened to supply compressed air to the receiving space 12a of the safety valve 30 through the air inlet 12b. When discharged to the outlet 31d of the safety valve 30, check the opening pressure of the pressure gauge (not shown) attached to the pressure gauge connector 12c. At this time, when repair and replacement of the safety valve 30 is required, it can be performed without releasing the air in the interior 110 of the pneumatic insect repellent to the atmosphere.

If a leak is confirmed in the on/off valve 20, the air in the pneumatic insect repellent 100 is discharged to the atmosphere by switching the on/off valve 20 to the open position, and then the accommodation chamber 120 By separating the composite valve 200 from, the on/off valve 20 may be separated and repaired or replaced and reinstalled in the receiving chamber 120. After that, open the air injection valve 300 of the composite valve 200 at the closed position of the on/off valve 20 and supply compressed air to the accommodation space 12a to test the opening pressure of the safety valve 300. have. After the test is completed, the air injection valve 300 is closed, the operation lever 25 of the on/off valve 20 is set to the open position, and the air injection valve 300 is opened. After replenishing air, the air injection valve 300 is closed and the pneumatic insect repellent 100 is converted to a normal use state.

On the other hand, in the pneumatic insect repellent 100 in the normal use state, the opening and closing valve 20 of the composite valve 200 is in an open state, and the internal pressure of the pneumatic insect repellent 100 is formed in the ball 21 of the composite valve 200 It acts on the disk 32 of the safety valve 30 installed by being inserted into the receiving space 12a through the through passage 21a. When the internal pressure of the composite valve 200 reaches a preset pressure by the vessel flow energy The disk 32 of the safety valve 30 is opened to release the air in the interior 110 of the pneumatic insect repellent to the atmosphere to protect the pneumatic insect repellent 100.

That is, the pneumatic insect repellent 100 including the composite valve 200 according to the present invention does not separate the safety valve 30 installed in the receiving space 12a of the composite valve 200, and the safety valve 30 in use state ), it is possible to test for abnormalities, and it is easy to separate and install the safety valve 30 without releasing the internal pressure of the pneumatic insect repellent 100, and the operation lever 25 is arranged to determine whether the on/off valve 20 is opened or closed. As it can be easily checked in the state, workability can be greatly improved and the safety of workers can be greatly improved compared to the prior art, while the volume and weight of the accommodation chamber 120 can be significantly reduced compared to the conventional pneumatic insect repellent. .

As described above, a detailed description of the present invention has been made by an embodiment with reference to the accompanying drawings, but the above-described embodiment has been described with reference to a preferred example of the present invention, so that the present invention is limited to the above embodiment. It should not be understood, and the scope of the present invention should be understood as the following claims and equivalent concepts.

For example, the drawings schematically show each component as a subject to aid understanding, and the thickness, length, number, etc. of each component shown may be different from the actual one in the progress of drawing creation. In addition, the material, shape, dimensions, etc. of each constituent element shown in the above embodiments are not particularly limited as an example, and various changes can be made without substantially departing from the effects of the present invention.

10: valve body
11: first body
11a: connecting flow
11b: first body flange
12: second body
12a: accommodation space
12b: air inlet
12c: pressure gauge connector
12d: second body flange
13: bushing
13a: main inflow path
20: on-off valve
21: ball
21a: through passage
23: valve stem
25: operation lever
30: safety valve
31: body
31a: spring tuck
31b: through hole
31c: body sheet
31d: outlet
32: disk
32a: disc guide
32b: through hole
33: stem
33a: inclined end
33b: threaded portion
34: adjustment nut
34a: nut part
35: spring support
35a: through hole
35b: slope
36: compression spring
100: pneumatic insect repellent
110: the interior of the pneumatic insect repellent
121: protruding plate
122: lower plate
123: shroud
120: accommodation room
200: composite valve
300: air injection valve
400: bracket of pneumatic insect repellent

Claims (5)

In the pneumatic insect repellent that is installed in the berth of the pier and acts as a buffer in case of collision between the ship and the berth,
A receiving chamber provided at an end of the pneumatic insect repellent and controlling the entry of air;
A valve body that is installed to be detachable from the accommodation chamber, communicates the interior of the pneumatic insect repellent with the accommodation chamber, and has an air inlet for injecting air into the interior;
A safety valve installed in an accommodation space provided above the valve body and provided with an outlet for discharging air to the outside through the valve body when the internal pressure of the pneumatic insect repellent is equal to or higher than a preset pressure;
A ball disposed below the safety valve in the valve body to open and close the interior of the pneumatic insect repellent and between the safety valve;
An on/off valve disposed below the safety valve in the valve body to control rotation of the ball; And
An operation lever connected to the opening/closing valve to enable rotation by a user;
Including,
The ball is provided with a through passage for communicating between the inside of the pneumatic insect repellent and the safety valve through the central portion, the opening and closing of the opening and closing valve is controlled according to the angle change of the through passage according to the rotation of the ball ,
An on-off valve, a safety valve, and an air inlet are all provided on the valve body to reduce the volume and weight of the accommodation chamber.
The method according to claim 1,
The valve body, the pneumatic type insect repellent composite valve is provided with a connection passage through which the through passage is connected below the safety valve.
The method according to claim 1,
The on-off valve includes a valve stem having one end coupled to at least a portion of the ball and the other end coupled to the operating lever,
By transmitting the rotational force of the operating lever to the valve stem, the ball coupled to the valve stem rotates at a predetermined angle to control the opening and closing of the through passage.
In the inspection method of a pneumatic insect repellent using the composite valve for pneumatic insect repellent according to any one of claims 1 to 3,
Operating the operating lever to close the on/off valve;
Checking whether the on/off valve leaks with a pressure gauge attached to a pressure gauge connector provided on the valve body; And
Supplying compressed air to the accommodation space in which the safety valve is disposed through the air inlet to check the opening pressure of the pressure gauge;
Including,
Closing the opening/closing valve by manipulating the operation lever is performed without releasing the internal pressure of the pneumatic insect repellent.
The method of claim 4,
The method of inspecting a pneumatic insecticide further comprising replacing the safety valve without releasing the air inside the pneumatic insecticide to the atmosphere.

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