CN112325021A

CN112325021A - Two-way stop joint

Info

Publication number: CN112325021A
Application number: CN202011346121.3A
Authority: CN
Inventors: 徐正杰; 罗英哲; 李扬眉; 于坤; 李圣明
Original assignee: Shanghai Chinaust Automotive Plastics Corp ltd
Current assignee: Shanghai Chinaust Automotive Plastics Corp ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-02-05

Abstract

The application discloses a bidirectional stop joint, which comprises a first pipe connecting piece and a second pipe connecting piece, the first pipe connecting piece forms an inlet and a connecting port which are used for communicating a pipeline, the first pipe connecting piece forms a first channel between the inlet and the connecting port, the second pipe connecting piece forms an outlet and a communicating port which are used for communicating another pipeline, the second pipe connecting piece forms a second channel between the outlet and the communicating port, the communicating component comprises an elastic piece and a communicating component, the elastic piece is provided with a free end and a static end, the communicating component is sleeved in the first pipe connecting piece in an axially sliding mode, the communicating component comprises a movable sealing piece and a static sealing piece, the movable sealing piece forms a movable sealing wall, the static sealing piece forms a static sealing wall which is mutually attached to the movable sealing wall, the static sealing piece is fixed on the first channel, and the movable sealing piece is pressed against the free end of the elastic piece in an axially sliding mode.

Description

Two-way stop joint

Technical Field

The invention relates to a joint, in particular to a bidirectional stop joint.

Background

With the continuous development of science and technology, various machine equipment is continuously emerged. Especially various power supply devices such as engines, batteries, fuel cells, and the like.

The new energy automobile is applied more and more widely nowadays. And the connecting pipeline system is an important component of fluid circulation in the new energy automobile. The connecting pipeline system can enable the new energy automobile to execute a preset mechanical action by controlling the flow direction of the fluid.

And sometimes the connecting piping system requires replacement of the piping assembly. In the process of replacement, in order to prevent the short circuit of the circuit caused by liquid leakage, a one-way stop joint is developed. The user can realize the blocking and the conduction of the fluid by operating the one-way stop joint. Therefore, when the connecting pipeline system needs to be replaced, the fluid can be blocked by operating the one-way stop joint, and the fluid is prevented from leaking in the replacement process. And after the replacement is finished, the one-way stop joint is continuously operated to further realize the conduction of the fluid.

However, the existing one-way stop joint is expensive, heavy in weight, large in flow resistance and not suitable for an automobile system. In addition, in the field of new energy vehicles, particularly fuel cell-capable new energy vehicles, since the hydrogen fuel system bipolar plates generate a large amount of electric ions which cannot circulate in the coolant, the adsorption of the electric ions is required. In the prior art, a deionizer is usually arranged in the flow direction of the fluid. The deionizers are expensive and not easy to install.

More importantly, because the unidirectional deionization joint can only block the pipe body in one direction, bidirectional sealing cannot be realized at the same time. Thus, when the deionization joint needs to be disassembled, the unsealed pipe body can leak liquid. Particularly in fuel cells, the power supply capacity of the fuel cell is affected if the coolant in the tube leaks.

In addition, the only one-way stop-go joint in the prior art is very complicated when the blocking state and the conducting state are switched, needs other tools and cannot be operated by one hand. In addition, one-way only leads to and connects when blocking state and on-state conversion among the prior art, need dismantle one-way only leads to the spare part that connects, and the process of dismantling is very hard moreover.

Disclosure of Invention

It is an object of the present invention to provide a two-way stop joint, wherein the two-way stop joint is capable of switching between a conducting state allowing fluid communication and a blocking state blocking fluid flow, and the connection to the two-way stop joint is capable of being sealed simultaneously when the two-way stop joint is in the blocking state.

It is another object of the present invention to provide a two-way stop joint wherein the user can switch the two-way stop joint to the blocking state by only requiring a single hand to operate the two-way stop joint.

To achieve at least one of the above objects, the present invention provides a bidirectional no-go joint for butting two pipes, wherein the bidirectional no-go joint comprises:

a first junction element defining an inlet for communicating with a conduit and a connection port, wherein the first junction element defines a first passageway between the inlet and the connection port;

a second pipe fitting forming an outlet and a communication port for communicating with another pipe, wherein the second pipe fitting forms a second passage between the outlet and the communication port;

a sliding seal assembly, wherein the sliding seal assembly comprises a through-stop member and a retractable member, wherein the through-stop member is slidably disposed in the second passage, the retractable member is disposed in the second passage in a manner that the retractable member can be compressed, and one end of the retractable member is pressed against the through-stop member, wherein when the retractable member is not compressed, the through-stop member is pressed against the retractable member to seal the communication port;

a no-go assembly, wherein the no-go assembly comprises:

an elastic member having a free end and a stationary end;

a stop member axially slidably received in the first pipe fitting, the stop member including a dynamic seal forming a dynamic seal wall and a static seal forming a static seal wall in contact with the dynamic seal wall, the static seal being fixed to the first passage, the dynamic seal being axially slidably urged against the free end of the elastic member, the static end of the elastic member being statically held in the first passage, when the second pipe fitting is inserted into the first passage from the communication port of the first pipe fitting, one end of the dynamic seal being urged by an end of the second pipe fitting to slide, the elastic member being compressed so that the dynamic seal wall of the dynamic seal slides axially offset with respect to the static seal wall of the static seal, and a flow opening communicated with the first channel and the second channel is formed between the static sealing wall and the dynamic sealing wall, and meanwhile, the check piece is pressed by the static sealing piece to compress the telescopic piece, so that the check piece slides in the direction away from the communication opening to enable the first channel and the second channel to be communicated.

According to an embodiment of the present invention, the movable sealing member has a cylindrical bottom wall and a circumferential side wall extending upward from a circumferential edge of the cylindrical bottom wall to form a sliding cavity with the cylindrical bottom wall, a mounting opening communicating with the sliding cavity is formed at a top of the circumferential side wall, the cylindrical bottom wall is provided with a cylindrical hole, the static sealing member has a special-shaped column, an abutting table extending from a top surface of the special-shaped column in a cross-sectional direction, and a sealing column extending from a bottom surface of the special-shaped column, the static end of the elastic member is abutted against a bottom surface of the abutting table, the free end of the elastic member is abutted against the top surface of the cylindrical bottom wall of the movable sealing member, at least one gap is formed between the bottom surface of the special-shaped column and the top surface of the abutting table, the gap is communicated with the first channel, the sealing column of the static sealing member is sleeved in the cylindrical hole after passing through the sliding cavity from the mounting opening, when the dynamic sealing element slides along the axis, the sealing column and the columnar hole are staggered with each other, so that the notch forms the flow port communicated with the second channel.

According to an embodiment of the present invention, the movable sealing member has a cylindrical bottom wall and a circumferential side wall extending upward from a circumferential edge of the cylindrical bottom wall to form a sliding cavity with the cylindrical bottom wall, a mounting opening communicating with the sliding cavity is formed at a top of the circumferential side wall, the cylindrical bottom wall is provided with a cylindrical hole, the static sealing member has a special-shaped column, an abutting table extending from a top surface of the special-shaped column in a cross-sectional direction, and a sealing column extending from a bottom surface of the special-shaped column, the static end of the elastic member is abutted against the bottom surface of the abutting table, the free end of the elastic member is abutted against the top surface of the cylindrical bottom wall of the movable sealing member, an inner wall of the cylindrical hole formed in the cylindrical bottom wall is provided with at least one notch, the notch is communicated with the first channel, the sealing column of the static sealing member is sleeved in the cylindrical hole after passing through the sliding cavity from the mounting opening, when the dynamic sealing element slides along the axis, the sealing column and the columnar hole are staggered with each other, so that the notch forms the flow port communicated with the second channel.

According to an embodiment of the invention, the two-way stop-and-go joint comprises a locking assembly, wherein the locking assembly is fixedly arranged on the first pipe fitting, wherein the second pipe fitting is inserted into the first passage, and the dynamic seal wall of the dynamic seal slides axially offset with respect to the static seal wall of the static seal, and the second pipe fitting is locked by the locking assembly when a flow opening communicating with the first passage and the second passage is formed between the static seal wall and the dynamic seal wall.

According to an embodiment of the present invention, the locking assembly includes a locking collar, an outer wall of the connection port of the first pipe connection member extends radially to form a mounting rim, the installation is provided with at least one pair of clamping windows along the radial direction, the lock hoop is provided with a lock hoop main body and a pair of elastic arms integrally extending from the lock hoop main body, a clasping opening is formed between the two elastic arms, the mounting rim further forms an insertion passage in a radial direction, the insertion passage being communicated with the pair of card windows, the lock collar being configured to be inserted from the insertion passage, when the lock hoop is inserted, the elastic arms of the lock hoop are radially contracted under the extrusion of the inner wall of the insertion channel, and when the lock collar is inserted into the insertion channel for a preset depth, the pair of elastic arms rebound and are clamped in the pair of clamping windows, so that the clasping opening formed by the lock collar is kept near the connecting opening. The outer wall of the end part of the second pipe connecting piece, which forms the communication port, forms an annular clamping edge, when one end of the second pipe connecting piece, which forms the communication port, is inserted into the first channel from the connecting port, the annular clamping edge is pressed and held on the elastic arm of the connecting port accessory, so that the holding port is expanded, and the elastic arm is expanded by the annular clamping edge as one end of the second pipe connecting piece, which forms the communication port, is continuously inserted into the first channel, and the elastic arm is limited to move back after passing over the annular clamping edge.

According to an embodiment of the present invention, an inner wall of the elastic arm of the locking assembly has a locking protrusion, and the locking protrusion extends toward a top wall of the elastic arm along an axial direction to form an upper guide surface.

According to an embodiment of the present invention, the locking protrusion extends axially toward the bottom wall of the elastic arm to form a lower guide surface.

According to an embodiment of the present invention, the two-way stop joint includes a first sealing element, an installation groove is provided on an outer wall of the second pipe fitting, where the communication port is formed, and the first sealing element is installed in the installation groove.

According to an embodiment of the present invention, the bidirectional stop-go joint comprises a second sealing element, and the peripheral side wall of the dynamic sealing element is provided with an annular groove for sleeving the sealing element, so that the dynamic sealing element maintains the sealing between the dynamic sealing element and the inner wall of the first pipe connecting element during the axial sliding process.

According to an embodiment of the present invention, the bidirectional stop-go joint includes a third sealing element, and a sleeve groove is disposed on an outer wall of the sealing column of the static sealing element for sleeve connection with the third sealing element, so that the static sealing wall and the dynamic sealing wall are attached to each other to maintain sealing.

Further objects and advantages of the invention will be fully apparent from the ensuing description.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

FIG. 1 shows a perspective view of the bi-directional stop joint of the present invention.

FIG. 2 shows an exploded view of the two-way stop-go coupling of the present invention.

Fig. 3 shows an exploded view of a portion of the construction of the bi-directional stop-go joint of the present invention.

FIG. 4 shows an angled cross-sectional view of the two-way stop-go joint of the present invention.

FIG. 5 shows a schematic view of the dynamic and static seals of the two-way check joint of the present invention as they seal against each other.

FIG. 6 shows a schematic view of the dynamic and static seals of the bi-directional stop-go joint of the present invention as they are offset from each other.

FIG. 7 shows an exploded view of the dynamic and static seals of the bi-directional stop-go joint of the present invention.

Fig. 8 shows a perspective view of the check member of the bi-directional check structure according to the present invention.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

A bi-directional stop joint 100 according to a preferred embodiment of the present invention will be described in detail below with reference to fig. 1-8 of the drawings, wherein the bi-directional stop joint 100 can be used to connect at least two pipes. The bi-directional stop-motion joint 100 is capable of switching between a conducting state allowing fluid communication and a blocking state blocking fluid flow, and during the conversion process, the user does not need to disassemble the bi-directional stop-motion joint.

Specifically, the bi-directional stop-go coupling 100 includes a first coupling member 10, a second coupling member 20, a stop-go assembly 30, and a locking assembly 40.

The first connecting piece 10 forms an inlet 101 and a connecting opening 102, wherein the first connecting piece 10 forms a first channel 1001 between the inlet 101 and the connecting opening 102. The second connecting piece 20 forms an outlet 201 and a communication opening 202, wherein the second connecting piece 20 forms a second channel 2001 between the outlet 201 and the communication opening 202.

The communication port 202 of the second joint member 20 is inserted into the first passage 1001 from the connection port 102, so that the first passage 1001 of the first joint member 10 and the second passage 2001 of the second joint member 20 communicate.

It is worth mentioning that the inlet 101 of the first pipe connection part 10 can be connected to a pipe. The outlet 201 of the second adapter 20 can be connected to another pipe. In this way, the conduit communicating with the inlet 101 and the conduit communicating with the outlet 201 can communicate with each other through the double check joint 100.

The locking assembly 40 is configured to lock the second fitting 20 inserted into the first passage 1001 to the first fitting 10.

Specifically, in the present embodiment, the locking assembly 40 includes a locking band 41. The outer wall of the connection port 102 of the first pipe joint member 10 extends radially to form a mounting rim 11. The mounting is provided with at least one pair of snap windows 1102 in the radial direction 11. The lock band 41 has a lock band body 411 and a pair of elastic arms 412 integrally extending from the lock band body 411. A clasping opening 41201 is formed between the two elastic arms 412.

The mounting rim 11 further defines an insertion passage 1101 in the radial direction. The insertion channel 1101 is communicated with the pair of chucking windows 1102. The locking clip 41 is configured to be inserted from the insertion channel 1101, and when the locking clip 41 is inserted, the elastic arms 412 of the locking clip 41 are radially contracted by being pressed by the inner wall of the insertion channel 1101, and when the locking clip 41 is inserted into the insertion channel 1101 to a predetermined depth, the pair of elastic arms 412 are rebounded and caught in the pair of catching windows 1102, so that the catching opening 41201 formed by the locking clip 41 is maintained near the connection opening 102.

The outer wall of the end of the second pipe fitting 20 where the communication port 202 is formed forms an annular retaining edge 203. When the end of the second adapter member 20 where the communication port 202 is formed is inserted into the first passage 1001 from the connection port 102. The annular retaining rim 203 presses against the elastic arms 412 retained near the connection port 102, so that the clasping opening 41201 is enlarged, and as the end of the second pipe connecting element 20 on which the communication opening 202 is formed is continuously inserted into the first passage 1001, the elastic arms 412 are spread apart by the annular retaining rim 203, and the elastic arms 412 are restricted from moving back beyond the annular retaining rim 203. Thereby, the second pipe joint 20 can be caught to the first pipe joint 10 by the locking band 41 of the locking assembly 40 to communicate the first passage 1001 and the second passage 2001.

Preferably, the inner wall of the resilient arm 412 of the locking assembly 40 has a locking protrusion 4121, wherein the locking protrusion 4121 extends axially toward the top wall of the resilient arm 412 to form an upper guide surface 401, and wherein the locking protrusion 4121 extends axially toward the bottom wall of the resilient arm 412 to form a lower guide surface 402.

It is worth mentioning that when the second adapter 20 is inserted into the first channel 1001 and presses against the resilient arm 412, the upper guiding surface 401 can guide the annular retaining rim 203 to pass over the clasping opening 41201. When the second adapter member 20 is pulled out of the first passage 1001, the lower guide surface 402 can guide the annular lip 203 over the clasping opening 41201.

It is worth one thing that the double check joint 100 includes a first seal 50. An installation groove 204 is formed on the outer wall of the second pipe fitting 20 where the communication port 202 is formed. The first sealing member 50 is mounted to the mounting groove 204. When the second fitting 20 is snapped to the first fitting 10 by the locking collar 41 of the locking assembly 40, the first seal 50 is sealingly retained between the inner wall of the first fitting 10 and the outer wall of the second fitting 20 that form the first passageway 1001. Therefore, when fluid flows between the first passage 1001 and the second passage 2001, the fluid does not flow out from between the inner wall of the first fitting 10 and the outer wall of the second fitting 20.

The stop-pass assembly 30 includes a stop-pass member 31 and a resilient member 32. The stop member 31 forms a sealing surface 3101. The through stop member 31 is fitted inside the first passage 1001 of the first pipe fitting 10, and the sealing surface 3101 of the through stop member 31 and the inner wall of the first pipe fitting 10 forming the first passage 1001 are relatively sealed to prevent fluid from leaking between the sealing surface 3101 of the through stop member 31 and the inner wall of the first pipe fitting 10 forming the first passage 1001.

The stop member 31 includes a dynamic seal 311 and a static seal 312. The elastic member 32 has a free end 321 and a stationary end 322.

The dynamic seal 311 forms a dynamic seal wall 31101. The static seal 312 forms a static seal wall 31201. The static seal 312 is fixed in the first channel 1001, and the dynamic seal 311 is axially slidably pressed against the free end 321 of the elastic member 32. The stationary end 322 of the resilient member 32 is held stationary in the first channel 1001.

When the second pipe joint member 20 is inserted into the first channel 1001 from the connection port 102 of the first pipe joint member 10 and locked by the locking assembly 40, one end of the dynamic seal 311 is pressed by the end of the second pipe joint member 20 to slide. At the same time, the elastic member 32 is compressed to slide the dynamic seal wall 31101 of the dynamic seal 311 in an axially displaced manner with respect to the static seal wall 31201 of the static seal 312, so that a fluid communication port 3001 communicating with the first passage 1001 and the second passage 2001 is formed between the static seal wall 312 and the dynamic seal wall 31101, thereby allowing the fluid to flow between the first passage 1001 and the second passage 2001.

After the locking assembly 40 is unlocked, the dynamic seal 311 pushes the dynamic seal 311 to slide axially relative to the static seal 312 under the action of the restoring force at the free end 321 of the elastic member 32, so that the dynamic seal wall 31101 of the dynamic seal 311 is sealed from each other relative to the static seal wall 31201 of the static seal 312, and the first channel 1001 and the second channel 1002 are blocked.

When the first channel 1001 and the second channel 2001 are in communication with each other, the bidirectional no-go joint 100 is in a conductive state, and when the first channel 1001 and the second channel 1002 are blocked, the bidirectional no-go joint 100 is in a blocked state.

In the first embodiment, the dynamic seal 311 is implemented in a barrel shape, that is, the dynamic seal 311 has a cylindrical bottom wall 3111 and a circumferential side wall 3112 extending upward from the circumference of the cylindrical bottom wall 3111 to form a sliding chamber 311101 with the cylindrical bottom wall 3111. The top of the peripheral side wall 3112 is formed with a fitting port 311102 communicating with the sliding chamber 31101. The cylindrical bottom wall 3111 is provided with a cylindrical hole 311103.

In this embodiment, the side wall of the cylindrical bottom wall 3111 in which the cylindrical hole 311103 is formed defines the dynamic seal wall 31101.

The outer wall of the dynamic seal 311 is arranged to remain sealed against the first passage 1001 of the first fitting 10 to prevent fluid from flowing out between the outer wall of the dynamic seal 311 and the inner wall of the first fitting 10 forming the first passage 1001.

The static seal 312 has a shaped column 3121, an abutment table 3122 extending from the top surface of the shaped column 3121 in the cross-sectional direction, and a sealing column 3123 extending from the bottom surface of the shaped column 3121. At least one gap 31202 is formed between the bottom surface of the special-shaped column 3121 and the top surface of the abutting table 3122. The gap 31202 is communicated with the first passage 1001.

It is worth mentioning that the side wall of the sealing post 3123 of the static seal 312 forms the static sealing wall 31201.

In this embodiment, the sealing post 3123 of the static seal 312 is slidably received in the cylindrical opening 311103 of the cylindrical bottom wall 3111 of the dynamic seal 311. The abutment table 3122 of the static seal 312 is secured to the inner wall of the first fitting 10 forming the first passageway 1001. The elastic member 32 is sleeved on the shaped column 3121 of the static sealing member 312. Specifically, the stationary end 322 of the elastic member 32 is pressed against the bottom surface of the abutment table 3122, the free end 321 of the elastic member 32 is pressed against the top surface of the cylindrical bottom wall 3111 of the dynamic seal 311, and when the cylindrical bottom wall 3111 of the dynamic seal 311 is not pressed, the dynamic seal wall 31101 and the static seal wall 31201 are kept sealed with each other.

When the second pipe connection element 20 is not inserted into the first passage 1001 formed by the first pipe connection element 10, the static seal 312 is not moved, and the dynamic seal 311 presses the dynamic seal wall 31101 formed by the dynamic seal 311 and the static seal wall 31201 formed by the static seal 312 against each other under the action of the free end 321 of the elastic element 32 to maintain the seal, so that the fluid in the second passage 2001 cannot flow into the first passage 1001 through the notch 31202.

When the second pipe connection member 20 is not inserted into the first passage 1001 formed by the first pipe connection member 10, since the dynamic seal 311 is pressed by the second pipe connection member 20 to slide in the axial direction, accordingly, the free end 321 of the elastic member 32 is pressed so that the entire elastic member 32 is compressed. As the dynamic seal 311 progressively slides axially relative to the static seal 312, the dynamic seal wall 31101 and the static seal wall 31201 become misaligned with one another such that the notch 31202 will be positioned to communicate with the flow ports 3001 of the first and

second passages

1001, 2001 when the second fitting 20 is locked by the locking assembly 40. That is, fluid can flow between the first passage 1001 and the second passage 2001 through the notch 31202 at this time.

It is worth mentioning that the fluid cannot circulate between the outer wall of the first pipe connection 10 and the inner wall of the second pipe connection 20 because the inner wall of the first pipe connection 10 and the outer wall of the second pipe connection 20 are sealed by the first sealing member 50.

Preferably, the double check joint 100 further includes a second seal 60.

In this embodiment, the peripheral side wall 3112 of the dynamic seal 311 is provided with an annular groove 311201 for sleeving the second seal 60, so that the dynamic seal 311 maintains the seal between the dynamic seal 311 and the inner wall of the first pipe fitting 10 during the axial sliding process.

More preferably, the double check joint 100 further includes a third seal 70. The outer wall of the sealing column 3123 of the static seal 312 is provided with a sleeving groove 312301 for sleeving the third seal 70, so as to seal the gap between the dynamic sealing wall 31101 and the static sealing wall 31201 when the two-way stop joint 100 is in a blocking state, thereby preventing the fluid from flowing between the dynamic sealing wall 31101 and the static sealing wall 31201.

Further, since the third seal 70 is provided, the cross-sectional diameter of the sealing post 3123 may be slightly smaller than the cross-sectional diameter of the cylindrical hole 31103, so that the dynamic seal wall 31101 and the static seal wall 31201 are sealed only by the third seal 70, and frictional resistance between the dynamic seal wall 31101 and the static seal wall 31201 is small when the dynamic seal wall 31101 slides in a staggered manner with respect to the static seal wall 31201.

Especially when the locking assembly 40 is unlocked, the dynamic seal member 311 and the second pipe joint member 20 pressing the dynamic seal member 311 can be automatically ejected by the elastic member 32 due to the restoring force of the elastic member 32. In this way, an operator only needs to unlock the locking assembly 40 with one hand in the process of switching the bidirectional no-go joint 100 from the on state to the off state.

The notch 31202 may be configured to be deformable, so that the cylindrical hole 311103 provided in the cylindrical bottom wall 3111 forms the flow port 3001 when the dynamic seal wall 31101 of the dynamic seal 311 is offset from the static seal wall 31201 of the static seal 312 by forming an inner wall of the cylindrical hole 311103 in the cylindrical bottom wall 3111.

It is worth mentioning that the first pipe connection piece 10 and/or the second pipe connection piece 20 may be implemented as a straight-through structure, and may also be implemented as a non-straight-through structure.

The bi-directional check joint includes a sliding seal assembly 80, wherein the sliding seal assembly 80 includes a check member 81 and a telescoping member 82. The extendable member 82 has a first end 8201 and a second end 8202. The first end 8201 of the retractable member 82 is fixedly pressed against the inner wall of the second pipe fitting 20 forming the second channel 2001, so that the first end 8201 is fixed. The second end 8202 is pressed against one side of the through-stop member 81, wherein the through-stop member 81 is slidably disposed in the second channel 2001. When the through-stop member 81 is pressed by the second end 8202 of the extensible member 82 and slides toward the communication port 202 of the second pipe fitting 20, the through-stop member 81 is guided to the communication port 202, and the communication port 202 is sealed. That is, when the through-stop member 81 is not acted by external force, the telescopic member 82 can press the through-stop member 81 against the communication opening 202 in a sealing manner under the action of its own elastic force, so that the second pipe member 20 is also sealed, and the fluid in the second passage 2001 is prevented from flowing out of the communication opening 202.

It is worth mentioning that when the end of the second pipe element 20 forming the communication port 202 is inserted into the first passage 1001 of the first pipe element 10 from the connection port 102, the dynamic seal 311 is pressed by the second pipe element 20 to slide axially, and the elastic element 32 contracts. As the second pipe 20 continues to penetrate the first passage 1001, the sealing column 3123 of the static seal 312 gradually protrudes from the communication port 202 into the second passage 2001 to press against the telescopic member 82. After the fluid port 3001 is formed by the mutual displacement between the dynamic seal 311 and the static seal 312, the telescopic member 82 is pressed by the sealing post 3123 of the static seal 312 and gradually slides toward the outlet 201, so that the second passage 2001 and the first passage 1001 are communicated with each other.

When the locking assembly 40 is operated by a single hand of a user to unlock the annular rim 203 of the second pipe joint 20, the dynamic seal 311 slides back under the pressing of the free end 321 of the elastic member 32 to seal the dynamic seal wall 31101 of the dynamic seal 311 and the static seal wall 31201 of the static seal 312 against each other, so as to prevent fluid from flowing from the communication port 101 of the first pipe joint 20 to the inlet 101 of the first pipe joint 10. At the same time, under the action of the elastic force of the telescopic member 82, the second end 8202 of the telescopic member 82 presses against the sealing column 3123 of the static sealing member 312, so as to force the second pipe fitting 20 to pop out from the first channel 1001, thereby eliminating the need for an operator to pull out the second pipe fitting 82 from the first channel 1001. Further, the communication stopper 81 slides toward the communication port 202 by being pressed by the second end 8202 of the extensible member 82 to seal the communication port 202. In this way, both the first and

second union pieces

10, 20 of the double check joint 100 are blocked.

Therefore, after the first and

second pipe connections

10 and 20 are separated, the fluid in the second passage 2002 does not flow into the first passage 1001. The fluid in the second passage 2001 does not flow out from the communication port 202.

It is worth mentioning that the through-stop member 81 has a sealing end portion 811 and a side portion 812. The side portion 812 integrally extends from the sealing end portion 811 to form a trumpet shape, and a cavity 81201 is formed between the sealing end portion 811 and the side portion 812. An opening 81202 is provided in the side portion 812. The opening 81202 is in communication with the cavity 81201. After the through-stop member 81 is mounted in the second passage 2001, the cavity 81201 is communicated with the second passage 2001. The second end 8202 of the retractable member 82 penetrates into the cavity 82101 and presses against the sealing end 811.

When the second pipe joint member 20 is not inserted into the first passage 1001, the seal end 811 of the through-stop member 81 is sealingly held at the communication port 202 by the extensible member 82, so that the communication port 202 of the second pipe joint member 20 is sealed. When the second fitting member 20 is inserted into the first passage 1001 and the check member 81 is blocked by the static seal 312 to compress the retractable member 82, the sealing end 811 of the check member 81 slides away from the communication port 202, so that the fluid in the second passage 2002 can flow out of the communication port 202 through the opening 81202.

It is worth mentioning that the sealing end portion 811 has a smaller cross-sectional diameter than the side portion 812 and is adapted to seal the communication port 202 of the second pipe fitting 20.

Preferably, the outer wall of the sealing end 811 is provided with an annular groove 81101. The two-way stop joint 100 includes a fourth sealing element 90, wherein the fourth sealing element 90 is sleeved in the annular groove 81101, so that after the sealing end 811 is sealed in the communication port 202, the fourth sealing element 90 can be tightly attached to the inner wall forming the second pipe connecting member 20, so as to achieve the effect of better sealing the communication port 202.

More preferably, the bi-directional stop-joint 100 further comprises at least two deionizing screens 9001 and 9002, wherein one of the deionizing screens 9001 is disposed in the first passageway 1001 between the inlet 101 and the stop-joint assembly 30 to remove ions from the fluid flowing in the first passageway 1001. Another de-ionization screen 9002 is disposed in the second channel 2001 between the outlet 201 and the sliding seal assembly 80 to remove ions from the fluid flowing into the second channel 2001.

It is worth integrating that, because the two-way stop joint 100 has a good sealing effect no matter in the on state or the off state, the fluid flowing through is not easy to leak.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A bi-directional stop-joint for butting two pipes, wherein said bi-directional stop-joint comprises:

a no-go assembly, wherein the no-go assembly comprises:

an elastic member having a free end and a stationary end;

2. The bi-directional stop-go joint according to claim 2, wherein the dynamic sealing member has a cylindrical bottom wall and a circumferential side wall extending upward from the circumference of the cylindrical bottom wall to form a sliding chamber with the cylindrical bottom wall, the top of the circumferential side wall forms an assembling opening communicating with the sliding chamber, the cylindrical bottom wall is provided with a cylindrical hole, the static sealing member has a shaped pillar, an abutting table extending from the top surface of the shaped pillar in the cross-sectional direction, and a sealing pillar extending from the bottom surface of the shaped pillar, the static end of the elastic member is pressed against the bottom surface of the abutting table, the free end of the elastic member is pressed against the top surface of the cylindrical bottom wall of the dynamic sealing member, at least one gap is formed between the bottom surface of the shaped pillar and the top surface of the abutting table, and the gap is communicated with the first channel, the sealing column of the static sealing element is sleeved in the cylindrical hole after penetrating through the sliding cavity from the assembling port, and when the movable sealing element slides along the axis, the sealing column and the cylindrical hole are staggered with each other, so that the notch forms the flow port communicated with the second channel.

3. The bi-directional stop-go joint according to claim 2, wherein the dynamic sealing member has a cylindrical bottom wall and a circumferential side wall extending upward from the circumference of the cylindrical bottom wall to form a sliding chamber with the cylindrical bottom wall, the top of the circumferential side wall forms an assembling opening communicating with the sliding chamber, the cylindrical bottom wall is provided with a cylindrical hole, the static sealing member has a shaped pillar, an abutting table extending from the top surface of the shaped pillar in the cross-sectional direction, and a sealing pillar extending from the bottom surface of the shaped pillar, the static end of the elastic member is pressed against the bottom surface of the abutting table, the free end of the elastic member is pressed against the top surface of the cylindrical bottom wall of the dynamic sealing member, the inner wall of the cylindrical bottom wall forming the cylindrical hole is provided with at least one notch, and the notch is communicated with the first channel, the sealing column of the static sealing element is sleeved in the cylindrical hole after penetrating through the sliding cavity from the assembling port, and when the movable sealing element slides along the axis, the sealing column and the cylindrical hole are staggered with each other, so that the notch forms the flow port communicated with the second channel.

4. The bi-directional stop-go joint of any one of claims 1 to 3, comprising a locking assembly, wherein the locking assembly is fixedly attached to the first fitting, wherein the second fitting is inserted into the first passage, and wherein the dynamic seal wall of the dynamic seal slides axially offset relative to the static seal wall of the static seal, and wherein the second fitting is locked by the locking assembly when a flow port is formed between the static seal wall and the dynamic seal wall that communicates with the first passage and the second passage.

5. The bi-directional stop-go joint of claim 4, wherein the locking assembly comprises a locking band, the outer wall of the connection port of the first pipe connection member extends radially to form a mounting rim, the mounting rim is provided with at least a pair of locking windows along a radial direction, the locking band has a locking band body and a pair of elastic arms integrally extending from the locking band body, a clasping opening is formed between the elastic arms, the mounting rim further forms an insertion channel along the radial direction, the insertion channel is communicated with the pair of locking windows, the locking band is configured to be inserted from the insertion channel, the elastic arms of the locking band contract radially under the pressure of the inner wall of the insertion channel when the locking band is inserted, and the elastic arms spring back and are locked in the pair of locking windows after the locking band is inserted into the insertion channel to a predetermined depth, so that the clasping opening formed by the lock hoop is kept near the connecting opening, the outer wall of the end part of the second pipe connecting piece, which forms the communication opening, forms an annular clamping edge, when the end of the second pipe connecting piece, which forms the communication opening, is inserted into the first channel from the connecting opening, the annular clamping edge is pressed against the elastic arm which is kept at the accessory of the connecting opening, so that the clasping opening is expanded, and the elastic arm is expanded by the annular clamping edge as the end of the second pipe connecting piece, which forms the communication opening, is continuously inserted into the first channel, and the elastic arm is limited to move back beyond the annular clamping edge.

6. The bi-directional stop-motion joint of claim 5, wherein the inner wall of the spring arm of the locking assembly has a snap projection extending axially toward the top wall of the spring arm to form an upper guide surface.

7. The bi-directional stop-motion joint of claim 6, wherein the snap-fit projection extends axially toward the bottom wall of the spring arm to form a lower guide surface.

8. The bi-directional stop-go coupling according to any one of claims 1 to 5, wherein the bi-directional stop-go coupling comprises a first sealing member, and an installation groove is provided on an outer wall of the second pipe connecting member where the communication port is formed, and the first sealing member is installed in the installation groove.

9. The bi-directional stop-motion joint according to claim 2 or 3, wherein said bi-directional stop-motion joint comprises a second sealing member, said peripheral side wall of said dynamic sealing member being provided with an annular groove for receiving said sealing member, whereby said dynamic sealing member maintains a seal between said dynamic sealing member and an inner wall of said first pipe element during axial sliding movement of said dynamic sealing member.

10. The bi-directional stop-go joint according to claim 2 or 3, wherein said bi-directional stop-go joint comprises a third sealing member, and an engaging groove is provided on an outer wall of said sealing post of said static sealing member for engaging said third sealing member, so that said static sealing wall and said dynamic sealing wall are engaged with each other to maintain a seal.