CN109477585B

CN109477585B - Connecting part for maintaining air tightness by using elasticity and valve provided with same

Info

Publication number: CN109477585B
Application number: CN201780043523.6A
Authority: CN
Inventors: 金政彦; 金基永; 金经国; 朴敬洙
Original assignee: SEBA Inc
Current assignee: SEBA Inc
Priority date: 2016-07-12
Filing date: 2017-07-04
Publication date: 2020-09-18
Anticipated expiration: 2037-07-04
Also published as: KR20180007083A; KR101894895B1; CN109477585A; WO2018012777A1

Abstract

The present invention relates to a connecting member for maintaining airtightness by using elastic force and a valve provided with the same, and is characterized by comprising: a housing having a flow path formed therein so that a fluid can flow from one side to the other side; a regulating device formed at an upper portion of the housing for blocking or passing a fluid flowing in the flow path of the housing; a combining member formed with a first pipeline connected with the flow path of the housing, the combining member being formed at one side and the other side of the housing, respectively; and a second pipeline connected in such a manner that the first pipeline of the joint is inserted into the interior, and clinging to the first pipeline by the elasticity of the material.

Description

Connecting part for maintaining air tightness by using elasticity and valve provided with same

Technical Field

The present invention relates to a connecting member for maintaining airtightness by using elastic force and a valve provided with the same, and more particularly, to a connecting member for maintaining airtightness by using elastic force, which uses a pipe made of an elastic material to maintain airtightness by using elastic force when connecting the pipe to the valve, and a valve provided with the same.

Background

In general, a valve is a device provided with an actuating unit having a function of opening and closing a passage for passing or blocking or controlling a fluid, and a coupling member engageable with a pipe is formed on each of both sides of the valve.

When the joint of the valve is coupled to the pipeline, since there is a possibility that fluid flowing at high pressure inside the pipeline leaks to the outside through a gap between the joint and the pipeline, the coupling is provided as a separate means for maintaining airtightness.

A sleeve of a joint member for pipe connection is disclosed in korean utility model laid-open No. 20-0480098, comprising: a body having a coupling groove formed at one side thereof; the sleeve is arranged in the combination groove for compression joint; and a pressure nut which is coupled by screw coupling in a state where the connection pipe is inserted into the coupling groove, wherein the sleeve is formed with an inclined portion on an outer surface of a front portion thereof, and the inclined portion is bent inward and pressed against the connection pipe when the pressure nut is screwed in a state where the inclined portion is in contact with an inclined surface formed on an inner side of the coupling groove of the body.

However, in the conventional technology as described above, if the nut is slightly loosened by vibration of the machine, the force for applying pressure to the sleeve and the seal is reduced, and a gap is generated, so that there is a problem that there is a possibility that the fluid leaks to the outside.

Disclosure of Invention

Technical problem

An object of the present invention devised to solve the problem lies on providing a connection member capable of maintaining airtightness by means of elastic force without generating a pipe line gap even without a nut, and a valve provided with the same.

Still another object of the present invention is to provide a connection member that maintains airtightness by means of elastic force, which has a simple structure and can easily connect pipes without using a separate pressurizing member such as a sleeve, and a valve provided with the same.

Another object of the present invention is to provide a connection member that maintains airtightness by means of elastic force, and a valve provided with the connection member, in which airtightness is maintained even when a nut loosens due to vibration of a device, thereby preventing fluid flowing through a pipe from leaking to the outside.

Technical scheme

The connecting member for maintaining airtightness by using elastic force and the valve provided with the same according to the present invention are characterized in that the housing has a flow path formed so that fluid can flow from one side to the other side; a regulating device formed at an upper portion of the housing for blocking or passing a fluid flowing in the flow path of the housing; a combining member formed with a first pipeline connected with the flow path of the housing, the combining member being formed at one side and the other side of the housing, respectively; and a second pipeline connected in such a manner that the first pipeline of the joint is inserted into the interior, and clinging to the first pipeline by the elasticity of the material.

In the connection member and the valve provided with the same, which maintain airtightness by means of elastic force, according to the present invention, a protruding ring is further formed on the outer circumferential surface of the first pipe of the joint so as to protrude and adhere to the outer circumferential surface of the first pipe without generating a gap by applying pressure to the inside of the second pipe.

In addition, the connection member for maintaining airtightness by using elastic force and the valve provided with the same according to the present invention are characterized in that the second pipeline includes: an enlarged pipe formed at one side of the second pipeline and having an inner diameter corresponding to an outer diameter of the first pipeline to enable the first pipeline to be inserted; a flow path pipe formed at the other side of the second pipeline and having an inner diameter corresponding to the inner diameter of the first pipeline so that the fluid moves in the direction of the inner diameter of the first pipeline; and an inclined pipe which is formed between the expanding pipe and the flow path pipe and is inclined in a mode of connecting the expanding pipe and the flow path pipe.

Also, the connection member maintaining airtightness by using elastic force and the valve provided with the same according to the present invention are characterized in that the coupling member includes a circular insertion groove, which is larger than the outer diameter of the second pipe, for inserting and fixing the second pipe.

Also, the connection part maintaining airtightness by using elastic force and the valve provided with the same according to the present invention are characterized by further comprising a fixing member having an inner diameter corresponding to an outer diameter of the second pipeline, positioned at an outer diameter of the second pipeline after being inserted into the first pipeline, and preventing the second pipeline from being separated from the first pipeline by being combined with the combining member.

In addition, the connection member maintaining airtightness by using elastic force and the valve provided with the same according to the present invention are characterized in that the fixing member is screwed and fixed to the coupling member, and applies pressure to the second pipeline in a direction toward the housing.

In addition, the present invention provides a connecting member for maintaining airtightness by using elastic force, and a valve provided with the same, wherein the connecting member includes: a joint member having first pipes capable of flowing a fluid formed at one side and the other side, respectively; and a second pipeline connected in such a manner that the first pipeline of the joint is inserted into the interior, and clinging to the first pipeline by the elasticity of the material.

ADVANTAGEOUS EFFECTS OF INVENTION

As described above, the coupling member for maintaining airtightness by using elastic force and the valve provided with the same according to the present invention have the effect of maintaining airtightness without generating a line gap even without a nut.

Further, the connection member maintaining airtightness by elastic force and the valve provided with the same according to the present invention have the effect of simplifying the structure and easily achieving pipeline connection by not using a separate pressurizing member such as a sleeve.

In addition, the connection member maintaining airtightness by elastic force and the valve provided with the same according to the present invention have an effect of maintaining airtightness even if the nut is loosened by vibration of the device, thereby preventing fluid flowing inside the pipe from leaking to the outside.

Drawings

Fig. 1 is a perspective view showing the form of a connecting member for maintaining airtightness by elastic force according to the present invention and a valve assembly line provided with the connecting member.

Fig. 2 is a development view showing the form of a connecting member for maintaining airtightness by elastic force and a valve connecting line provided with the connecting member according to the present invention.

Fig. 3 is a sectional view showing the inside of a pipe of a connecting member for maintaining airtightness by elastic force and a valve provided with the connecting member according to the present invention.

Fig. 4 is a cross-sectional view showing the inside of a connecting member for maintaining airtightness by elastic force according to the present invention and a valve-coupled pipe provided with the connecting member.

100: outer cover

110: adjusting device

111: opening and closing device

112: open-close loop

200: joint member

210: first pipeline

211: projecting ring

220: joint pipe

221: insertion groove

222: clinging groove

223: first screw thread

300: second pipeline

310: enlarged tube

320: inclined pipe

330: flow path pipe

400: fixing piece

410: combining hole

411: second screw thread

420: pressurizing hole

421: clinging ring

430: transfer hole

431: pressure ring

Detailed Description

The specific features and advantages of the present invention are described in detail below with reference to the accompanying drawings. Heretofore, in a case where it is judged that a specific description of functions and configurations related to the present invention may unnecessarily obscure the gist of the present invention, the specific description will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the connecting member for maintaining airtightness by using elastic force according to the present invention and the valve provided with the same include: a housing 100 having a flow path formed so that a fluid can flow from one side to the other side; a regulating device 110 formed at an upper portion of the housing 100 for blocking fluid flowing in the flow path of the housing 100 or allowing fluid flowing in the flow path of the housing 100 to pass therethrough; a coupling member 200 formed with a first pipe 210 (refer to fig. 2) connected to the flow path of the housing 100, the coupling member 200 being formed at one side and the other side of the housing 100, respectively; and a second pipe 300 connected to the first pipe 210 (see fig. 2) of the coupler 200 so as to be inserted into the interior, and closely attached to the first pipe 210 by an elastic force of a material.

The housing 100 has a flow path formed therein to allow or block a fluid flow from one side of the housing 100 to the other side, and an adjustment device 110 is provided at an upper portion of the housing 100, so that the fluid flowing inside the housing 100 can be controlled by rotation of the adjustment device 110.

The coupling member 200 formed at one side and the other side of the housing 100 is used to couple the second pipe 300 and the fixing member 400, the coupling member 200 is formed with the first pipe 210 of fig. 2 connected to the second pipe 300 through which the fluid flows, and the first pipe 210 of fig. 2 is formed in such a manner that the fluid flowing inside the second pipe 300 moves to the flow path inside the housing 100 without leakage.

The fixing member 400 serves to prevent the second pipeline 300 from being separated from the first pipeline 210 in fig. 2 by the pressure of the fluid flowing inside the second pipeline 300, and to fix the second pipeline 300 by applying pressure to the second pipeline 300 toward the housing 100 in combination with the coupling member 200.

Further, the connecting member for maintaining airtightness by using elastic force according to the present invention includes: a coupling member 200 having first pipes 210 (see fig. 2) formed at one side and the other side thereof, respectively, to allow a fluid to flow therethrough; and a second pipe 300 connected to the first pipe 210 (see fig. 2) of the coupler 200 so as to be inserted into the interior, and closely attached to the first pipe 210 by an elastic force of a material.

The connection part includes the coupling member 200, the second pipe 300, and the fixing member 400, and the connection part may be used by being combined with a valve, but may be connected to the second pipe 300 formed at one side and the other side of the housing 100 by symmetrically forming the first pipe 210 of fig. 2 and the coupling pipe 220 of fig. 2 formed at the coupling member 200 in opposite directions at one side and the other side.

That is, the connecting member can also be used for the purpose of connecting two lines, instead of being used in combination with a valve.

As shown in fig. 2, the connection member for maintaining airtightness by elastic force and the valve provided with the same according to the present invention are characterized in that a protrusion ring 211 protruding and attached so as not to generate a gap by applying pressure to the inside of the second pipe 300 is further formed on the outer circumferential surface of the first pipe 210 of the coupler 200.

And, the second tube 300 includes: an enlarged tube 310 formed at one side of the second pipeline 300, having an inner diameter corresponding to an outer diameter of the first pipeline 210, to enable the first pipeline 210 to be inserted; a flow path pipe 330 formed at the other side of the second pipe 300, having an inner diameter corresponding to the inner diameter of the first pipe 210, so that the fluid moves in the inner diameter direction of the first pipe 210; and an inclined pipe 320 inclined between the enlarged pipe 310 and the flow path pipe 330 so as to connect the enlarged pipe 310 and the flow path pipe 330.

The second pipe 300 includes an enlarged pipe 310, an inclined pipe 320, and a flow path pipe 330 so as to be connectable to the first pipe 210, and the enlarged pipe 310 has an inner diameter corresponding to an outer diameter of the first pipe 210, so that the enlarged pipe 310 and the first pipe 210 are closely fixed to each other when the first pipe 210 is inserted into the enlarged pipe 310.

When the first pipe 210 is inserted into the enlarged pipe 310, the end of the first pipe 210 is closely attached to the inclined pipe 320 of the second pipe 300 and pressure is applied to the inner side, and since the inner diameter of the first pipe 210 is the same as the diameter of the flow pipe 330, fluid flowing through the second pipe 300 can flow into the first pipe 210 without generating a vortex due to collision.

Further, since the plurality of protruding rings 211 protruding outward are formed on the outer circumferential surface of the first pipe line 210, when the first pipe line 210 is inserted into the enlarged pipe 310, the enlarged pipe 310 is pressurized by the protruding rings 211 on the inner side, and a fine gap generated by the outer diameter of the first pipe line 210 and the inner diameter of the enlarged pipe 310 is closed, thereby preventing fluid from leaking to the outside.

In this case, it is preferable that the second pipe 300 is formed of a material having elasticity and not corroded, damaged, or deformed by chemical characteristics of the fluid flowing inside, and as an example, PFA (Perfluoroalkoxy) having excellent chemical resistance, weather resistance, corrosion resistance, and standard illumination and less adhering impurities may be used as a material of the second pipe 300.

That is, since the second pipe 300 is made of a material having an elastic force, the expanding pipe 310 having an inner diameter corresponding to the outer diameter of the first pipe 210 is expanded to the outer diameter of the protruding ring 211 by being pressed by the protruding ring 211 when the first pipe 210 is inserted, and thus the first pipe 210 can be inserted, and after the first pipe 210 is inserted, the expanding pipe is closely adhered to the outer circumferential surfaces of the protruding ring 211 and the first pipe 210 by the elastic force, thereby maintaining airtightness.

And, the present invention is characterized by further comprising a fixing member 400, an inner diameter of the fixing member 400 corresponds to an outer diameter of the second pipeline 300, is located at the outer diameter of the second pipeline 300 after the first pipeline 210 is inserted, and prevents the second pipeline 300 and the first pipeline 210 from being separated by being combined with the coupling member 200.

The fixing member 400 is located on the outer circumferential surface of the second pipe 300, and applies pressure to the second pipe 300 toward the housing 100 by being combined with the coupling member 200 and fixes it.

In this case, the coupling member 200 is formed with a cylindrical coupling pipe 220, the coupling pipe 220 is formed on the outer circumferential surface of the first pipe 210 so as to be coupled with the fixing member 400, a first screw 223 is formed on the outer circumferential surface of the coupling pipe 220, and the fixing member 400 can be fixed to the coupling member 200 by the first screw 223.

The inner diameter of the fixing member 400 corresponds to the outer diameter of the coupling pipe 220 of the coupling member 200, the outer diameter of the enlarged pipe 310 of the second pipe 300, and the outer diameter of the flow passage pipe 330 of the second pipe 300, respectively, from the side of the fixing member 400 closely contacting the housing 100, and a second screw 411 (see fig. 3) is formed at the inner diameter of the fixing member 400 corresponding to the outer diameter of the coupling pipe 220, so that it can be coupled to the first screw 223 of the coupling member 200.

Further, since the height difference generated by the inner diameter of the fixture 400 formed in correspondence with the outer diameters of the enlarged tube 310 and the flow path tube 330 applies pressure to the inclined tube 320 of the second pipe 300 when the fixture 400 is coupled to the coupling member 200, the second pipe 300 is closely attached to the housing 100, and can be fixed so as not to be separated by the internal fluid pressure.

As shown in fig. 3, the connection member for maintaining airtightness by elastic force and the valve provided with the same according to the present invention are characterized in that a circular insertion groove 221 is formed in the coupling member 200, and the insertion groove 221 is larger than the outer diameter of the second pipe 300 and is used for inserting and fixing the second pipe 300.

The coupling pipe 220 of the coupling member 200 is formed on an outer circumferential surface of one side of the first pipe 210, has an outer diameter larger than that of the first pipe 210, and has a first screw 223 formed on an outer circumferential surface thereof to which the fixing member 400 is fixed.

One side of the coupling pipe 220 is connected to the housing 100, and an insertion groove 221 recessed inward toward one side is formed on the other side of the coupling pipe 220, and when the first pipe line 210 is inserted into the enlarged pipe 310, the enlarged pipe 310 closely attached to the outer circumferential surface of the first pipe line 210 is inserted into the insertion groove 221.

The insertion groove 221 is formed in a circular shape and has a size corresponding to the thickness of the enlarged tube 310, or is smaller than the thickness of the enlarged tube 310, and when the enlarged tube 310 is inserted into the insertion groove 221, the enlarged tube 310 is forcibly fitted into the insertion groove 221, thereby fixing the enlarged tube 310.

In addition, the present invention is characterized in that an adhesion groove 222 inclined toward the insertion groove 221 is formed in a chamfered manner at the other side of the coupling member 200 where the insertion groove 221 is formed.

When the expansion pipe 310 of the second pipe 300 is inserted into the insertion groove 221, the expansion pipe 310 pressed by the protrusion ring 211 is guided toward the insertion groove 221 by the close contact groove 222.

The present invention is characterized in that the fixing member 400 includes: a coupling hole 410 formed in one end of the fixing member 400, the inner diameter of which corresponds to the outer diameter of the coupling pipe 220 of the coupler 200; a pressurizing hole 420 formed in the middle of the fixing member 400, the inner diameter of which corresponds to the outer diameter of the expanding tube 310 of the second pipe 300; and a transfer hole 430 formed in the other end of the fixing member 400 and having an inner diameter corresponding to an outer diameter of the flow path pipe 330 of the second pipe 300.

The second screw 411 is formed on the inner circumferential surface of the coupling hole 410 formed inside one end of the fixing member 400, and thus, it is coupled to the first screw 223 formed on the outer circumferential surface of the coupling pipe 220 of the coupler 200, so that the fixing member 400 can be fixed to the coupler 200.

The pressurizing hole 420 formed in the middle portion of the fixture 400 is formed to correspond to the outer diameter of the expanding pipe 310 of the second pipe line 300, and the pressurizing hole 420 of the fixture 400 applies pressure to the outer circumferential surface of the expanding pipe 310, the inner circumferential surface of which is pressed by the protruding ring 211 of the first pipe line 210, to closely contact the expanding pipe 310 and the first pipe line 210, thereby improving airtightness.

Further, the pressurizing hole 420 of the fixing member 400 is made smaller than the outer diameter of the enlarged tube 310 of the second pipe 300, so that the pressurizing force is forcibly engaged to increase the airtightness.

In addition, the present invention is characterized in that a close contact ring 421 having the same inner diameter as that of the pressurizing hole 420 is formed inside the coupling hole 410 of the fixture 400, and the shape of the close contact ring 421 corresponds to the close contact groove 222 formed in the coupler 200.

When fixture 400 is coupled to coupling member 200, contact ring 421 is brought into contact with contact groove 222, and the end of enlarged tube 310 of second pipe 300 inserted into insertion groove 221 is pressed so as not to be lifted by protruding ring 211 of first pipe 210.

Therefore, when the enlarged tube 310 of the second pipeline 300 is inserted into the first pipeline 210, it is pressed by the protrusion ring 211 formed on the outer circumferential surface of the first pipeline 210, and thus it is possible to prevent a gap from being generated due to the end of the enlarged tube 310 being spaced apart from the outer circumferential surface of the first pipeline 210.

Also, the present invention is characterized in that the fixing member 400 is screw-coupled to the coupling member 200 to apply pressure to the second pipe 300 toward the housing 100.

The transfer hole 430 formed in the fixture 400 is formed to be movable along the outer circumferential surface of the flow path pipe 330 of the second pipe 300, and when the transfer hole is closely attached to the inclined pipe 320 of the second pipe 300, the fixture 400 is caught by the inclined pipe 320 of the second pipe 300 due to a height difference generated by a diameter difference between the pressurizing hole 420 and the transfer hole 430 of the fixture 400.

In this case, the fixture 400 may apply pressure to the inclined pipe 320 of the second pipe 300 toward the housing 100 in fig. 1 due to a height difference generated by a diameter difference between the pressurizing hole 420 and the transfer hole 430, and thus, if the fixture 400 is coupled to the coupler 200, the second pipe 300 may be prevented from being moved in a direction opposite to the housing 100 in fig. 1.

Further, the pressure ring 431 having a size corresponding to the outer diameter of the inclined tube 320 of the second pipe 300 and a shape corresponding to the outer circumferential surface of the inclined tube 320 may be formed at a height difference generated by a diameter difference between the pressure hole 420 and the transfer hole 430 of the fixing member 400.

Since the pressure ring 431 formed in the fixing member 400 is in close contact with the outer peripheral surface of the inclined tube 320 of the second pipe 300, the area is increased when the pressure ring is in contact with the inclined tube, and thus the pressure can be more effectively applied to the second pipe 300 in the direction of the housing 100 in fig. 1.

As shown in fig. 4, according to the connection member maintaining airtightness by elastic force and the valve provided with the same of the present invention, a flow path through which fluid can flow is formed inside the housing 100, and an adjustment device 110 capable of blocking the flow path or adjusting the flow rate is formed at the upper portion of the housing 100.

The adjustment device 110 is connected to a shutter 111 formed inside the housing 100, and when the shutter 111 is rotated to be raised or lowered, the shutter 111 is brought into close contact with an open loop 112 formed inside the housing 100 to block a fluid flowing from one side of the housing 100 to the other side, and when the adjustment device 110 is rotated to raise the shutter 111, the fluid can flow to the other side.

A coupling member 200 is formed at one side and the other side of the housing 100 so as to be coupled to the second pipe 300 for flowing the fluid, and a fixing member 400 is formed at an outer circumferential surface of the coupling member 200 so as to apply pressure to the second pipe 300 toward the housing 100 and fix it.

When the first pipe 210 formed at the connection pipe is inserted into the second pipe 300, the middle section of the enlarged pipe 310 of the second pipe 300 is pressurized by the protrusion ring 211 formed at the outer circumferential surface of the first pipe 210, and the end is inserted into the insertion groove 221 of fig. 3 formed at the coupling pipe 220 of the connection pipe.

When the fixture 400 is screwed to the coupling pipe 220 of the coupler 200, the close contact ring 421 of the fixture 400 is brought into close contact with the close contact groove 222 in fig. 3 formed in the coupling pipe 220, and pressure can be applied so as to prevent the tip of the enlarged pipe 310 from being lifted by the protruding ring 211 of the first pipe 210.

Further, since the end of the first pipe 210 is formed to be closely attached to the inclined tube 320 of the second pipe 300, when the pressure ring 431 of the fixture 400 applies pressure to the inclined passage of the second pipe 300 toward the housing 100, the second pipe 300 is prevented from being separated from the first pipe 210, and fluid can be prevented from leaking into a gap between the end of the first pipe 210 and the inclined passage.

Further, by applying pressure to the outer circumferential surface of enlarged pipe 310 of second pipe 300 pressed inward by projecting ring 211 of first pipe 210, fixing tool 400 brings enlarged pipe 310 into close contact with projecting ring 211, thereby preventing fluid leakage and improving airtightness by forming a plurality of projecting rings 211.

Also, even if the fixing member 400 is rotated and loosened by vibration of the machine, the pressure is applied to the enlarged tube 310 of the second pipe 300 into which the first pipe 210 of the coupling 200 is inserted through the protrusion ring 211, and thus the airtightness can be maintained.

As described above, the connection member maintaining airtightness by elastic force and the valve provided with the same according to the present invention have the effects of maintaining airtightness without generating a pipeline gap even without a nut, simplifying a structure and easily connecting pipelines without using a separate pressurizing member such as a sleeve, and maintaining airtightness to prevent fluid flowing inside the pipeline from leaking to the outside even if the nut is loosened by vibration of a machine.

The present invention described above is mainly explained by the preferred embodiments, and a person skilled in the art to which the present invention pertains can apply various modifications or alterations to the present invention without departing from the technical idea and the scope of the present invention described in the claims of the present invention. Therefore, the scope of the present invention should be construed in accordance with the claims of the present invention as set forth below including various modifications.

Claims

1. A valve for maintaining airtightness by using elastic force, comprising:

a housing having a flow path formed so that a fluid can flow from one side to the other side;

a regulator formed at an upper portion of the housing, for blocking or allowing passage of a fluid flowing through the flow path of the housing;

a coupling member formed with a first pipe connected to the flow path of the housing, the coupling member being formed at one side and the other side of the housing, respectively; and

a second pipe connected to the first pipe of the connector in such a manner that the first pipe is inserted into the second pipe, and closely attached to the first pipe by an elastic force of a material;

a protruding ring protruding and attached to the outer circumferential surface of the first pipe of the coupling member so as not to generate a gap by applying pressure to the inside of the second pipe,

the combining piece comprises a circular insertion groove which is larger than the outer diameter of the second pipeline and is used for inserting and fixing the second pipeline,

further comprising a fixing member having an inner diameter corresponding to an outer diameter of the second pipeline, located at the outer diameter of the second pipeline after the first pipeline is inserted, for preventing the second pipeline from being separated from the first pipeline by being combined with the coupling member,

a close contact groove inclined toward the insertion groove is formed in a chamfered manner on the other side of the combination piece on which the insertion groove is formed,

further comprising a close fitting ring formed on an inner face of the fixing member to be in close contact with the close fitting groove,

if the fixing member is coupled to the coupling member, the close fitting ring is in close contact with the close fitting groove, thereby preventing one side end of the second pipe from being spaced apart by the protruding ring.

2. The valve for maintaining airtightness by using elastic force according to claim 1, wherein the second pipe comprises:

an enlarged pipe formed at one side of the second pipeline and having an inner diameter corresponding to an outer diameter of the first pipeline so that the first pipeline can be inserted;

a flow path pipe formed on the other side of the second pipe, having an inner diameter corresponding to the inner diameter of the first pipe, and moving a fluid in the inner diameter direction of the first pipe; and

and an inclined pipe which is arranged between the enlarged pipe and the flow path pipe and is inclined to connect the enlarged pipe and the flow path pipe.

3. A connecting member for maintaining airtightness by using elastic force, comprising:

a joint member having first pipes capable of flowing a fluid formed at one side and the other side, respectively; and