WO2017123027A1

WO2017123027A1 - Check valve having forcible locking function

Info

Publication number: WO2017123027A1
Application number: PCT/KR2017/000430
Authority: WO
Inventors: 이상헌; 한동일
Original assignee: (주)두쿰
Priority date: 2016-01-14
Filing date: 2017-01-12
Publication date: 2017-07-20
Also published as: KR20170085234A

Abstract

A check valve having a forcible locking function, according to one embodiment of the present invention, comprises: a valve main body having an inlet connected to an inlet pipe which provides a flow path; a shaft of which one end is positioned inside the valve main body and the other end is positioned outside the valve main body, wherein the shaft is rotatably coupled to the valve main body; a power delivery means, which is connected to an end portion of the shaft, for converting the rotational force of the shaft into linear movement in a direction perpendicular to the shaft and outputting same; a disk, which is provided with a through-hole at the center for inserting an end portion of the power delivery means, and which is inserted into the power delivery means and moves in two directions to open or close the inlet or an opening on the inlet pipe; a spring arranged between the disk and the shaft for providing elastic reaction force to the disk; and a stopper protrudingly formed along the circumferential direction of the power delivery means so as to press the disk in the direction of the inlet or the opening on the inlet pipe.

Description

Forced Check Check Valves

The present invention relates to a check valve having a forced lock function, and more particularly, to a check valve having a forced lock function of forcibly shielding the flow path by pressurizing the disk provided to open and close the flow path to which the fluid is supplied. .

In general, the valve refers to a device for controlling the flow rate, flow rate, pressure, etc. of the fluid flowing through the pipe, in particular, the check valve is used as a valve for flowing the fluid in only one direction and blocking the flow in the opposite direction. .

1 is a view schematically showing a conventional check valve.

Referring to this, the conventional check valve is formed with an inlet 11 connected to the inlet pipe 50 through which the fluid is supplied, and an outlet 12 connected to the outlet pipe through which the fluid is discharged, and the inlet 11 and the outlet ( A valve body 10 forming a space portion 13 in communication with 12), and a stem 20 having one side positioned outside the valve body 10 and the other side positioned inside the valve body 10. And a disk 30 connected to the other side of the stem 20 to linearly move in both directions and opening or shielding the inlet 11, and between the disk 30 and the outlet 12 of the valve body 10. It may include a spring (40) inserted in to provide an elastic reaction force to the disk (30).

Therefore, when a fluid pressure is applied to the inlet 11, the disk 30 may open the inlet 11 while the spring 40 is contracted so that the fluid may be introduced into the space 13. On the other hand, when the fluid pressure is not applied, the disk 30 shields the inlet port 11 while expanding with the elastic reaction force of the spring 40, and the fluid of the space 13 is not allowed to enter the inlet port 11. Will not escape through). For reference, the fluid pressure refers to pressure by various fluids including hydraulic pressure or hydraulic pressure.

However, in the conventional check valve as described above, when the fluid pressure is applied to the inlet 11, the inlet 11 is opened while the disk 30 moves unconditionally by the pressure, and the fluid is introduced through the inlet 11. Since the inflow structure is taken, there is a problem that the fluid is continuously introduced through the inlet 11 even in a situation where the supply of the fluid to the space 13 and the discharge pipe is to be blocked.

In addition, in the related art, there is a problem in that the means for adjusting the opening degree of the disk 30 is not provided, and thus the flow rate of the fluid flowing into the space 13 and the discharge pipe cannot be adjusted.

The check valve having a reverse forced locking function according to an embodiment of the present invention is to solve the above-mentioned problems, the object of the following problems.

The inlet to which the fluid is introduced can be opened by the fluid pressure, or can be forcibly shielded from being opened even when the fluid pressure is applied, and it has a forced lock function that can adjust the opening degree even if it is opened by the fluid pressure as needed. In providing a check valve.

The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Check valve having a forced locking function according to an embodiment of the present invention is a valve body having an inlet connected to the inlet pipe for providing a flow path, one end is located inside the valve body, the other end is located outside the valve body And a shaft rotatably connected to the valve body, a power transmission member connected to an end of the shaft to convert the rotational force of the shaft into a linear motion in a direction perpendicular to the shaft, and a power transmission member. A through hole having an end fitted therein is formed in the central portion, and is inserted into the power transmission member to move in both directions to open and close the opening of the inlet or the inlet pipe, and is disposed between the disc and the shaft to provide an elastic reaction force to the disc. It includes a spring.

The apparatus may further include a stopper protruding along the circumferential direction of the power transmission member so as to press the disk in the opening direction of the inlet or the inlet pipe.

In addition, a pinion may be formed at one end of the shaft located inside the valve body, and the power transmission member may cross vertically with the shaft, and a rack may be formed at one side thereof to engage the pinion.

In addition, the valve body may be formed in the form of a hollow tube forming the inlet on one side, the outlet on the other side facing the inlet, and forming a space portion in communication with the inlet and outlet.

In addition, the valve body is formed with a hollow guide member penetrating through one side, the shaft can be rotated while being supported by the guide member.

In addition, a thread is formed on the inner circumferential surface of the guide member, and a thread is formed on the outer circumferential surface of the shaft, and the shaft can be lifted while being rotated by being fitted to the guide member.

In addition, the diameter of the opening of the inlet pipe communicating with the inlet is formed to be smaller than the diameter of the inlet, the disk can open and close the opening of the inlet pipe.

In addition, a support member for supporting the power transmission member may be formed in the inlet pipe and / or the valve body.

In addition, the disk, the sealing member of the elastic material protruding toward the center in the circumferential direction may be formed in the through hole.

In addition, the disk may include a disk member made of metal having a hole in the center and an elastic cover member formed to surround the outside of the disk member, wherein the sealing member may be integrally formed with the cover member. have.

In addition, the sealing member may be formed on both sides of the through hole.

The check valve having a forced locking function according to an embodiment of the present invention may be forcibly shielded so that the inlet in which the fluid is introduced is opened by the fluid pressure or not open even when the fluid pressure is applied, and the fluid is opened by the fluid pressure. Even if there is an effect that can adjust the degree of opening.

In addition, the shaft may be rotated through the handle, and the inlet in which the fluid is introduced may be opened by the fluid pressure only by the rotation direction or the degree of rotation of the shaft, or may be forcibly shielded from being opened even if the fluid pressure is applied. Even if opened by the user can control all the operations that can adjust the opening degree, the operation is simple and structurally simple effect.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the following description.

1 is a view schematically showing a conventional check valve.

2 is a cross-sectional view showing a shielded state check valve having a forced locking function according to an embodiment of the present invention.

3 is a cross-sectional view showing an open state check valve having a forced locking function according to an embodiment of the present invention.

Figure 4 is a cross-sectional view showing a state in which the opening degree of the check valve having a forced locking function according to an embodiment of the present invention is adjusted.

5 is a cross-sectional view illustrating a state in which a check valve having a forced locking function according to an embodiment of the present invention is forcibly shielded.

6 is a front view of the check valve having a forced locking function according to an embodiment of the present invention.

7 is a cross-sectional view showing a fluid supply system having a check valve having a forced locking function according to an embodiment of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

In addition, in describing the present invention, when it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are only for easily understanding the spirit of the present invention and should not be construed as limiting the spirit of the present invention by the accompanying drawings.

2 is a cross-sectional view illustrating a shielded check valve having a forced lock function according to an embodiment of the present invention, Figure 3 is a check valve having a forced lock function according to an embodiment of the present invention in an open state It is a cross section shown.

Hereinafter, the fluid pressure referred to in the description is known in advance that the pressure by various fluids, including hydraulic pressure or water pressure.

2 to 3, a check valve having a forced locking function according to an embodiment of the present invention includes a valve body 100, a shaft 200, a power transmission member 300, and a disk 400. And a spring 500 and a stopper 600.

First, the valve body 100 and the inlet port 110 is connected to the inlet pipe 700 for providing a flow path 710, the space portion 120 in which the fluid supplied into the interior through the inlet pipe 700 and A discharge port 130 is formed to discharge the fluid in the space 120 to the outside.

The valve body 100 serves as a housing of the valve, the inlet 110 and the outlet 130 may be formed in a straight line facing each other, the inlet 110 and the outlet 130 are perpendicular to each other. It may be formed of a 'T' shape or 'b' shape arranged to be, and may be configured in various other types. In addition, the inlet 110 and / or outlet 130 may be a flange 170 is formed on the outer peripheral surface.

For reference, the inlet 110 is connected to the inlet pipe 700, the outlet 130 is connected to the discharge pipe. The inlet 110 and the inlet pipe 700, the outlet 130 and the discharge pipe can be connected to the bolt fastening by forming a flange 170 in contact with each other, by forming a protrusion or groove at the end in contact with each other ring joint or It may be connected via a fastening means such as a groove joint. In addition, it is also possible to insert the inlet pipe 700 and the outlet pipe in the inlet 110 and the outlet 130, respectively, and connect the inlet 110 and the inlet pipe 700, the outlet 130 and the discharge pipe by welding.

The valve body 100 as described above may be installed on the bottom surface 1, the height adjusting means 800 for adjusting the separation distance of the bottom surface 1 and the valve body 100 is the valve body 100 It may be provided separately on the outside of the.

In addition, the valve body 100 may discharge the fluid contained in the valve body 100 to the outside in an emergency, or may form an emergency exit that can be supplied with fluid from the outside. The emergency exit is normally shielded with a stopper, and can be opened only in an emergency.

In addition, the valve body 100, the inlet 110 is formed on one side, the outlet port 130 is formed on the other side facing the inlet 110, the inlet 110 and the outlet 130 therein It may be made in the form of a hollow tube forming a space portion 120 in communication with.

One end of the shaft 200 is located inside the valve body 100, and the other end is located outside the valve body 100 to be connected to the handle 210 and rotatably connected to the valve body 100. do.

As described above, one end of the shaft 200 is positioned outside the valve body 100, and the other end of the shaft 200 passes through the valve body 100 and is positioned inside the valve body 100. A handle 210 for rotating the shaft 200 is mounted at the end of the shaft 200 located outside the valve body 100.

Since the handle 210 is disposed outside the valve body 100, an operator may operate the handle 210 outside the valve body 100.

For example, the shaft 200 may be disposed to be perpendicular to the flow direction of the fluid that is supplied to the inlet 110 and exits to the outlet 130.

The power transmission member 300 is connected to the end of the shaft 200 located inside the valve body 100 to convert the rotational force of the shaft 200 into a linear motion in a direction perpendicular to the shaft 200. To print.

The power transmission member 300 may be applied to a variety of known means in the range that receives the rotational movement of the shaft 200 is converted into a linear motion and output. For example, the power transmission member 300 may include a rack and pinion, or may include a ball screw or a bevel gear or a worm gear.

For example, when the shaft 200 rotates clockwise (or counterclockwise), the power transmission member 300 linearly moves toward the inlet 110 in association with the rotational movement of the shaft 200, and the shaft ( When 200 is rotated counterclockwise (or clockwise), the power transmission member 300 may linearly move toward the outlet 130 in association with the rotational movement of the shaft 200.

The disk 400 has a through hole 410 into which an end of the power transmission member 300 is fitted, and is inserted into the power transmission member 300 to move in both directions, and the inlet 110 or the inlet pipe 700. Open and close the opening 720 of. For reference, an end portion of the power transmission member 300 fitted into the through hole 410 of the disk 400 may be formed in a cylindrical shape having a circular cross section.

The disk 400 is formed in the form of a disc, the power transmission member 300 to guide the inlet port 110 by moving to the inlet 110 or the inlet pipe 700, the opening 720, or the outlet ( 130, the opening 720 of the inlet 110 or the inlet pipe 700 may be opened. When the opening 720 of the inlet 110 or the inlet pipe 700 is opened, the fluid transferred to the inlet pipe 700 may flow into the valve body 100, and the inlet 110 or the inlet pipe 700 may be When the opening 720 is shielded, the fluid transferred to the inlet pipe 700 may not be introduced into the valve body 100, and the fluid of the valve body 100 may not escape to the inlet pipe 700.

In addition, the opening 720 of the inlet pipe 700 is located inside the valve body 100 through the inlet 110, or is formed in contact with the inlet 110, the disk 400 is the The opening 720 of the inflow pipe 700 may be opened and closed.

In the above-described embodiment, the disk 340 is specified to open and close the inlet 110, but the opening 720 of the inlet pipe 700 is located inside the valve body 100 through the inlet 110 Alternatively, when formed in contact with the inlet 110, the disk 400 may open and close the opening 720 formed at the end of the inlet pipe 700.

In addition, the diameter of the opening 720 of the inlet pipe 700 in communication with the inlet 110 is formed to be smaller than the diameter of the inlet 110, a flange is formed in the inlet pipe 700 to the valve body It is connected to the inlet 110 of the 100, the disk 400 can open and close the opening 720 of the inlet pipe 700.

The spring 500 is disposed between the disk 400 and the shaft 200 to provide an elastic reaction force to the disk 400. Preferably, the spring 500 is disposed between the disk 400 and the shaft 200, but one end of the spring 500 is supported while contacting the guide member 140 or the supporting member 160, which will be described later, and the other end of the spring (500). While contacting 400, the disk 400 can be pushed toward the inlet 110.

Spring 500 may be provided as a compression spring (compression spring), it is disposed between the disk 400 and the shaft 200 to provide an elastic reaction force to the disk 400. More specifically, the spring 500 provides a pressing force for pushing the disk 400 in the direction of the opening 720 of the inlet 110 or the inlet pipe 700. In this case, the power transmission member 300 may be disposed to penetrate the inside of the spring 500.

In the check valve configured as described above, the disk 400 may shield the opening 720 of the inlet 110 or the inlet pipe 700 by the pressing force of the spring 500. In addition, as the spring 500 contracts due to the fluid pressure of the fluid supplied to the inlet pipe 700, the disk 400 moves toward the outlet port 130, and the opening 720 of the inlet port 110 or the inlet pipe 700 is moved. ) May be opened.

As shown in FIG. 2, when the fluid is not transferred to the inlet pipe 700 or the amount of the fluid is small, the disk 400 blocking the opening 720 of the inlet pipe 700 by the pressing force of the spring 500. ), The disk 400 may continuously shield the opening 720 of the inlet pipe 700 because no fluid pressure is generated to push the toward the outlet 130. In addition, in the state where the fluid is filled in the valve body 100, the disk 400 is forced to maintain a state in which the opening 720 of the inlet pipe 700 is shielded by the fluid pressure.

On the other hand, as shown in FIG. 3, when the fluid is supplied to the inlet pipe 700, and the fluid pressure applied from the inlet pipe 700 becomes greater than the pressing force of the spring 500, the spring 500 is caused by the fluid pressure. As the disc 400 contracts and blocks the opening 720 of the inflow pipe 700 in the direction of the outlet 130, the opening 720 of the inflow pipe 700 opens and is transferred to the inflow pipe 700. The fluid may be introduced into the valve body 100.

Referring to FIG. 5, the stopper 600 protrudes along the circumferential direction of the power transmission member 300 to press the disc 400 toward the opening 720 of the inlet 110 or the inlet pipe 700. Is formed.

The stopper 600 is formed integrally with the power transmission member 300, and moves along the power transmission member 300 in the inlet 110 and outlet 130, the disk 400 is inlet 110 or A pressing force is provided to closely contact the inlet 110 or the opening 720 of the inlet pipe 700 to forcibly shield the opening 720 of the inlet pipe 700.

That is, by rotating the shaft 200 to move the power transmission member 300 and the stopper 600 in the inlet 110 direction to press the disk 400 toward the inlet 110, the disk 400 is the inlet 110 ) Or in close contact with the opening 720 of the inlet pipe 700. At this time, even if the fluid is transferred to the inlet pipe 700 and the fluid pressure is applied to the disk 400, the disk 400 does not move because the stopper 600 is forcibly pressing the disk 400, and the inlet port 110 ) Or the opening 720 of the inlet pipe 700 may be shielded.

Referring to FIG. 4, the opening degree of the disk 400 and the flow rate of the fluid flowing into the valve body 100 may be controlled by the configuration of the stopper 600. Since the stopper 600 moves in both directions together with the power transmission member 300, the stopper 600 may be spaced apart from the disk 400. Therefore, when the distance between the stopper 600 and the disk 400 is reduced, the movement distance of the disk 400 is limited to be short, and the fluid is transferred to the inlet pipe 700 to increase the fluid pressure to the disk 400. When applied, the disk 400 may be opened only by a limited distance so that the flow rate of the fluid flowing into the valve body 100 may be adjusted.

On the other hand, if the distance between the stopper 600 and the disk 400 is long, the moving distance of the disk 400 is inevitably lengthened, and the fluid is transferred to the inlet pipe 700 to apply the fluid pressure to the disk 400. In the ground, the disk 400 may be opened only by an extended distance, so that the flow rate of the fluid flowing into the valve body 100 may be relatively increased.

In addition, a pinion 220 is formed at one end of the shaft 200 positioned inside the valve body 100, and the power transmission member 300 crosses the shaft 200 vertically, but at one side thereof. A rack 310 engaged with the pinion 220 may be formed.

Accordingly, when the shaft 200 rotates, the pinion 220 formed at the end of the shaft 200 rotates at the same time, and the rack 310 engaged with the pinion 220 moves to one side or the other side, and the power transmission member 300 moves to the inlet ( 110) or may be linearly moved in the direction of the outlet 130.

In addition, the valve body 100, a hollow guide member 140 penetrating one side is formed, the shaft 200 may be rotated while being supported by the guide member 140. The shaft 200 is connected to the guide member 140 by a bush, a bearing, and the like, and may rotate.

At this time, one end of the guide member 140 may be located inside the valve body 100, and the other end may be exposed to the outside of the valve body 100, and the guide member 140 and the valve body 100 may be welded. Can be connected in a manner. In addition, a sealing member 150 may be formed between the guide member 140 and the shaft 200 to block the flow of the fluid.

In addition, a thread 141 is formed on the inner circumferential surface of the guide member 140, and a thread 201 is formed on the outer circumferential surface of the shaft 200, so that the shaft 200 is fitted to the guide member 140 to rotate. You can get on and off.

Accordingly, when the handle 210 located outside of the valve body 100 is turned, the shaft 200 inserted into the guide member 140 moves forward into the valve body 100, or reverses to the outside of the valve body 100. can do. At this time, the guide member 140 does not rotate because it is fixed to the valve body 100, and only the shaft 200 rotates forward or backward according to the rotation direction.

For example, when the handle 210 is rotated clockwise (or counterclockwise), the shaft 200 may move forward while rotating inwardly of the valve body 100, and the power transmission member 300 may move the shaft ( In conjunction with the rotational movement of the 200, the linear movement in the direction of the inlet 110. In this process, the stopper 600 formed on the power transmission member 300 may press the disk 400 to limit the movement of the disk 400.

In addition, when the handle 210 is rotated counterclockwise (or clockwise), the shaft 200 may be reversed to the outside of the valve body 100, and the power transmission member 300 may rotate the shaft 200. It moves in a straight line in the direction of the outlet 130 in conjunction with the movement. In this process, the pressing force of the stopper 600 applied to the disk 400 is released, and the disk 400 can move to both sides along the power transmission member 300.

When the shaft 200 ascends while rotating as described above, by checking the length of the shaft 200 exposed to the outside of the valve body 100 to determine the opening degree of the disk 400 and whether the disk 400 is forced shielding Can be.

In addition, a support member 160 for supporting the power transmission member 300 may be formed in the inlet pipe 700 and / or the valve body 100.

The power transmission member 300 moves linearly in both directions in a state where the power transmission member 300 penetrates through the hollow support member 160 and is fitted to the support member 160.

For reference, the support member 160 may be provided in the interior of the valve body 100 and the inlet pipe 700, respectively, and both ends of the power transmission member 300 are supported by the support member 160, respectively. It can be kept horizontal without tilting to one side. The support member 160 may be formed of a ring portion having a hollow in which the power transmission member 300 is fitted and a plurality of reinforcement portions connecting the ring portion and the inner surface of the valve body 100 or the inflow pipe 700. .

In addition, the disk 400, the sealing member 420 of the elastic material protruding toward the center in the circumferential direction may be formed in the through hole 410.

The sealing member 420 is made of a material such as rubber, and is provided to shield a gap therebetween so that fluid does not escape between the through hole 410 and the power transmission member 300.

In addition, the disk 400 includes a disk member 401 of a metallic material having a through hole 410 in the center, and an elastic cover member 402 formed to surround the outside of the disk member 401. However, the sealing member 420 may be integrally formed with the cover member 402.

The disk member 401 is for reinforcing the disk 400 and is made of a metal material. The cover member 402 is formed of an elastic material such as rubber to cover the outside of the disk member 401. The disk member 401 and the cover member 402 may be integrally formed by an insert injection method. The cover member 402 formed in the through hole 410 of the disk member 401 may be formed by extending a protrusion protruding toward the center in the circumferential direction, the protrusion may act as a sealing member 420.

In addition, the sealing member 420 may be formed on both sides of the through hole 410, respectively.

Therefore, even if a gap occurs between any one of the sealing member 420 and the power transmission member 300 while tilting to one side while the power transmission member 300 is fitted in the through hole 410, the other sealing member ( 420 may be stably shielded between the through-hole 410 and the power transmission member 300.

The operation of the check valve having the forced locking function having the above structure will be described as follows.

First, when the pump 2 is driven to send the fluid to the inlet pipe 700, the disk 400 blocking the opening 720 of the inlet pipe 700 by the fluid pressure of the fluid transferred to the inlet pipe 700. ) Is pushed into the valve body 100, the fluid of the inlet pipe 700 is introduced into the valve body 100. Thereafter, when the driving of the pump 2 is stopped and no fluid is transferred to the inlet pipe 700, the fluid pressure applied to the disk 400 is removed, and the disk 400 is moved by the elastic force of the spring 500. The opening 720 of the inlet pipe 700 is shielded again.

On the other hand, when forcibly shielding the opening 720 of the inlet pipe 700, by turning the handle 210, the stopper 600 is in close contact with the disk 400. When the stopper 600 is in close contact with the disk 400, even if the fluid is transferred through the inlet pipe 700 and the fluid pressure is applied to the disk 400, the disk 400 is supported by the stopper 600 to support the disk 400. ) May be forcibly shielded from the opening 720 of the inlet pipe 700 without opening.

In addition, to adjust the flow rate flowing into the valve body 100, by turning the handle 210 to adjust the distance between the disk 400 and the stopper 600 as desired. When the distance between the disk 400 and the stopper 600 is adjusted, since the opening degree of the disk 400 is adjusted, the flow rate of the fluid flowing into the valve body 100 from the inlet pipe 700 can be adjusted.

According to the present invention as described above, the inlet 110 and the opening 720 of the inlet pipe 700 through which the fluid is introduced can be opened by the fluid pressure or can be forcibly shielded from being opened even when the fluid pressure is applied. And, even if opened by the fluid pressure there is an advantage that can adjust the degree of opening.

The embodiments described in the present specification and the accompanying drawings merely illustrate some of the technical ideas included in the present invention. Therefore, since the embodiments disclosed in the present specification are not intended to limit the technical spirit of the present invention but to explain, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments. Modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical spirit included in the specification and drawings of the present invention are included in the scope of the present invention. It should be interpreted.

Claims

A valve body having an inlet connected to an inlet pipe providing a flow path;

A shaft having one end located inside the valve body and the other end located outside the valve body and rotatably connected to the valve body;

A power transmission member connected to an end of the shaft to convert a rotational force of the shaft into a linear motion in a direction perpendicular to the shaft and output the linear motion;

A disc formed at a central portion of the through hole into which the end of the power transmission member is fitted, and inserted into the power transmission member to move in both directions to open and close the opening of the inlet or the inlet pipe; And

A spring disposed between the disk and the shaft to provide an elastic reaction force to the disk;

Check valve having a forced lock function including a.
The method of claim 1,

And a stopper protruding along the circumferential direction of the power transmission member so as to press the disk in the opening direction of the inlet or the inlet pipe.
The method of claim 1,

A pinion is formed at one end of the shaft located inside the valve body, and the power transmission member crosses the shaft vertically, but a rack engaged with the pinion is formed at one side thereof. Check valve.
The method of claim 1,

The valve body has a forced locking function formed in the form of a hollow tube forming the inlet on one side, the outlet on the other side facing the inlet, and forming a space portion in communication with the inlet and the outlet therein. Check valve.
The method of claim 1,

The valve body is a check valve having a forced locking function, characterized in that the hollow guide member penetrating one side is formed, the shaft is rotated while being supported by the guide member.
The method of claim 5,

A thread is formed on an inner circumferential surface of the guide member, and a thread is formed on an outer circumferential surface of the shaft, and the check valve has a forced locking function, wherein the shaft is fitted to the guide member and rotates.
The method of claim 1,

The diameter of the opening of the inlet pipe communicating with the inlet is formed to be smaller than the diameter of the inlet, the disk has a check valve having a forced locking function for opening and closing the opening of the inlet pipe.
The method of claim 1,

And a check valve having a forced locking function in which a support member for supporting the power transmission member is formed in the inlet pipe and / or the valve body.
The method of claim 1,

The disk;

And a check valve having a forced locking function in which the sealing member of an elastic material protruding toward the center in the circumferential direction is formed in the through hole.
The method of claim 9,

The disk includes a disk member made of metal having a hole in the center and an elastic cover member formed to surround the outside of the disk member, wherein the sealing member has a forced locking function integrally formed with the cover member. Check valve with.
The method of claim 9,

The sealing member is a check valve having a forced locking function, characterized in that formed on both sides of the through hole.