Intercepting connector and two-way intercepting assembly with same

Abstract

The utility model provides a cut-off joint and a two-way cut-off assembly with the cut-off joint, the cut-off joint comprises a joint body, a first connecting pipe fitting, a first cut-off valve and a first reset piece, one end of the first connecting pipe fitting is provided with a first pipeline connector, the other end of the first connecting pipe fitting is fixedly connected with the joint body, and the inner side wall of the joint body is provided with a first closed slope; the first shutoff valve can move in the axial direction of the connector body and is matched with the first closed slope to open and close a fluid channel of the connector body, one end of the first reset piece abuts against the first pipe connecting piece, and the other end of the first reset piece abuts against the first shutoff valve. When the matching connector is pulled out of the intercepting connector, the first reset piece applies force to the first shutoff valve to enable the first shutoff valve to move in the direction close to the first pipe connecting piece, the fluid channel of the connector body is opened, and when the matching connector is pulled out of the intercepting connector, the first reset piece applies force to the first shutoff valve to enable the first shutoff valve to move in the direction away from the first pipe connecting piece, and the fluid channel of the connector body is closed. The bidirectional cut-off assembly comprises the cut-off connector and the matched cut-off connector.

Description

Technical Field

[0001] The utility model relates to the field of connections of new energy vehicle cooling systems, in particular to a throttling joint and a two-way throttling assembly having the same. Background Technique

[0002] The market share of new energy vehicles has increased year by year. In the energy storage system of new energy vehicles, a large amount of heat is generated by batteries or supercapacitors, and effective cooling is required to ensure their normal operation. Common cooling methods include liquid cooling and air cooling, etc. In a liquid cooling system, the coolant circulates through the cooling pipeline to absorb the heat generated by the battery or supercapacitor. A throttling joint is often used in the connection process of the coolant, so that when the pipeline is maintained or replaced, it is not necessary to drain the fluid in the pipeline first, so as to avoid fluid leakage during the pipeline disassembly process, causing waste or environmental pollution.

[0003] Existing throttling joints achieve throttling through the tight fit between the throttle valve and the inner wall of the joint body. In the design process, in order to prevent fluid leakage, technicians often only focus on the throttling effect of the throttling joint. Therefore, the outer diameter of the throttle valve is strictly matched with the inner diameter of the joint body, and a guiding inclined surface is provided on the inner wall of the joint body to guide the throttle valve to close by passing over the minimum inner diameter of the inclined surface. Such a closing method indeed has a good throttling effect. However, in actual use, the applicant found that the assembly difficulty of the existing throttle valve is very high, and a large force needs to be applied to the mating joint to completely insert it into the throttling joint. After a large number of simulation experiments by the applicant, it was found that it is precisely because the return spring has to counteract the friction force of the throttle valve passing over the minimum inner diameter of the inclined surface that a return spring with a relatively large return force must be selected. Although the return spring with a relatively large return force well realizes the throttling effect after the throttle valve is closed, it also makes it necessary to apply a large force when the mating joint is inserted, and the installation difficulty is very high. Therefore, how to design a throttling joint and a two-way throttling assembly with a reduced insertion force of the mating joint and a reduced assembly difficulty has become an urgent technical problem to be solved. Summary of the Utility Model

[0004] Based on this, it is necessary to address the above problems. On the one hand, the present utility model provides a shut-off joint, which includes: a joint body, a first connecting pipe, a first shut-off valve, and a first reset member. One end of the first connecting pipe is provided with a first pipe connector, and the other end is fixedly connected to the joint body. The inner side wall of the joint body is provided with a first closed inclined surface. The first shut-off valve can move axially along the joint body and cooperate with the first closed inclined surface to open and close the fluid passage of the joint body. One end of the first reset member abuts against the first connecting pipe, and the other end abuts against the first shut-off valve. When the mating joint is inserted into the shut-off joint, the mating joint applies a force to the first shut-off valve to make it move towards the direction close to the first connecting pipe, and the fluid passage of the joint body is opened. When the mating joint is pulled out of the shut-off joint, the first reset member applies a force to the first shut-off valve to make it move away from the first connecting pipe, and the fluid passage of the joint body is closed.

[0005] With such a setting, the first shut-off valve cooperates on the first closed inclined surface to achieve sealing. On the one hand, it can make the first shut-off valve and the inner side wall of the joint body fit tightly under the guidance of the first closed inclined surface, without fluid leakage. On the other hand, it avoids closing across the minimum inner diameter of the inclined surface, effectively avoiding the huge frictional force suffered by the first shut-off valve at the bent part of the inclined surface. The restoring force provided by the first reset member can be greatly reduced, so that the insertion force applied to the mating joint can also be greatly reduced, and it is easier to assemble the mating joint, greatly improving the installation experience.

[0006] In an embodiment of the present utility model, the first shut-off valve is provided with a blocking block extending away from the joint body, and the surface area of the blocking block in the radial direction is smaller than that of the first shut-off valve, and it abuts against the blocking block when the mating joint is inserted into the shut-off joint.

[0007] With such a setting, when the mating joint is inserted, it abuts against the blocking block, avoiding the large-area blockage of the opening of the mating joint by the first shut-off valve. The gap between the first shut-off valve and the mating joint can also allow fluid to pass through, so that the fluid flow rate can be larger.

[0008] In an embodiment of the present utility model, the first connecting pipe is sleeved on the outer side wall of the joint body. The first shut-off valve includes a first limiting member, a first connecting frame, and a first valve core. The first limiting member is connected to the first valve core through the first connecting frame. The first valve core cooperates with the first closing inclined surface to open and close the fluid passage of the joint body. The abutting block is arranged on the first valve core. The first limiting member includes a first limiting ring and a second limiting ring. The outer diameter of the first limiting ring matches the inner diameter of the joint body. The outer diameter of the second limiting ring matches the outer diameter of the joint body. When the first reset member applies a force to the first shut-off valve to move it away from the first connecting pipe, the second limiting ring can be in abutting cooperation with the pipe wall of the joint body to limit the first shut-off valve from continuing to move away from the first connecting pipe.

[0009] With such a setting, the outer diameter of the first limiting ring matches the inner diameter of the joint body, so that the entire first shut-off valve always remains in the middle position of the joint body after closing. The outer diameter of the second limiting ring matches the outer diameter of the joint body. On the one hand, it makes the entire first shut-off valve always remain in the middle position of the first connecting pipe after opening. On the other hand, it can prevent the first shut-off valve from being excessively inserted into the joint body, limit the first shut-off valve to cooperate on the first closing inclined surface to achieve closing, and avoid the first shut-off valve crossing the minimum inner diameter of the first closing inclined surface.

[0010] In an embodiment of the present utility model, the inner side wall of the first connecting pipe has a reduced inner diameter to form a first limiting step. When the mating joint applies a force to the first shut-off valve to move it towards the first connecting pipe, the second limiting ring can be in abutting cooperation with the first limiting step to limit the first shut-off valve from continuing to move towards the first connecting pipe.

[0011] With such a setting, the second limiting ring can be in abutting cooperation with the first limiting step to prevent the first reset member from being excessively compressed.

[0012] In an embodiment of the present utility model, the first valve core includes a first sealing ring. The outer side wall of the first valve core is provided with a second closing inclined surface. A first installation ring groove is formed on the second closing inclined surface. The first sealing ring is installed in the first installation ring groove.

[0013] With such a setting, the second closing inclined surface can cooperate with the first closing inclined surface for guiding, so that the first valve core receives less friction force in the joint body. And the first sealing ring is elastic, which can also reduce the friction force received by the first valve core in the joint body on the premise of ensuring the sealing effect. Therefore, the reset force provided by the first reset member can be reduced, and thus the insertion force applied to the mating joint can also be reduced, making it easier to assemble the mating joint and improving the installation experience.

[0014] In an embodiment of the present utility model, a first abutting strip is provided at a portion where the inner diameter of the inner side wall of the first connecting pipe member decreases, and one end of the first reset member abuts against the first abutting strip. It should be noted that the first abutting strip can be one strip, or can be composed of several strip-shaped objects. In this embodiment, it is selected to be composed of three strip-shaped objects, and the gaps between the strip-shaped objects are used for the passage of fluid.

[0015] With such a setting, the first abutting strip is arranged at the portion where the inner diameter of the inner side wall of the first connecting pipe member decreases, which can radially limit the first reset member by using the portion where the inner diameter of the inner side wall decreases, and can also provide a longer stroke for the retraction and extension of the first reset member.

[0016] In an embodiment of the present utility model, the first connecting pipe member is sleeved on the joint body. The first connecting pipe member is provided with a plurality of first connecting plates at one end close to the joint body. The first connecting plates are provided with first positioning holes. The outer side wall of the joint body is provided with a plurality of first positioning protrusions matching the first positioning holes. The cooperation between the first positioning holes and the first positioning protrusions enables the first connecting pipe member to be clamped with the joint body. A second sealing ring is provided between the first connecting pipe member and the joint body.

[0017] With such a setting, the first connecting pipe member and the joint body are detachably sleeved, which is convenient for the disassembly and repair of the shut-off joint, and the second sealing ring ensures the sealing performance between the two.

[0018] On the other hand, the present utility model provides a two-way shut-off assembly, including the above-mentioned shut-off joint and a matching shut-off joint. The matching shut-off joint includes a matching joint body, a second connecting pipe member, a second shut-off valve and a second reset member. One end of the second connecting pipe member is provided with a second pipe connector, and the other end is fixedly connected to the matching joint body. The matching joint body is provided with a shut-off port at one end far from the second connecting pipe member. The inner diameter of the shut-off port is smaller than the inner diameter of other parts of the inner side wall of the matching joint body. The second shut-off valve can move axially along the matching joint body and cooperate with the shut-off port to open and close the fluid passage of the matching joint body. One end of the second reset member abuts against the second connecting pipe member, and the other end abuts against the second shut-off valve. The first shut-off valve extends axially away from the first connecting pipe member to form a top valve strip. When the matching shut-off joint is inserted into the shut-off joint, the top valve strip applies a force to the second shut-off valve to make it move in the direction close to the second connecting pipe member, and the fluid passage of the matching joint body is opened. When the matching shut-off joint is pulled out of the shut-off joint, the second reset member applies a force to the second shut-off valve to make it move in the direction away from the second connecting pipe member, and the fluid passage of the matching joint body is closed.

[0019] In this way, when the mating shut-off joint is inserted into the shut-off joint, the mating joint body abuts against the first shut-off valve, causing it to undergo axial displacement, and the first shut-off valve opens; the top valve strip on the first shut-off valve abuts against the second shut-off valve, causing it to undergo axial displacement, and the second shut-off valve opens; and when the mating shut-off joint is pulled out of the shut-off joint, the first shut-off valve and the second shut-off valve are closed under the action of the first reset member and the second reset member, respectively; in this way, the mutual cooperation between the shut-off joint and the mating shut-off joint can achieve a two-way shut-off effect, thereby avoiding fluid leakage during pipeline disassembly.

[0020] In one embodiment of the utility model, the second shut-off valve includes a second limiting member, a second connecting frame and a second valve core. The second limiting member is connected to the second valve core through the second connecting frame. The second valve core cooperates with the shut-off port to open and close the fluid channel of the mating joint body. The second limiting member includes a third limiting ring. The inner diameter of the terminal end of the inner side wall of the mating joint body is reduced to form a second limiting step. The outer diameter of the third limiting ring matches the large inner diameter part of the mating joint body. When the second reset member applies force to the second shut-off valve to make it move away from the second connecting piece, the third limiting ring can cooperate with the abutment of the second limiting step to limit the second shut-off valve from continuing to move away from the second connecting piece.

[0021] In this way, the outer diameter of the third limit ring matches the large inner diameter part of the mating joint body so that the entire second shut-off valve always remains in the middle position of the mating joint body after closing, and the abutment between the third limit ring and the second limit step can prevent the second shut-off valve from being over-inserted into the mating joint body.

[0022] In one embodiment of the utility model, a second stop strip is provided on the inner side wall of the second connecting piece, and one end of the second reset piece abuts against the second stop strip. It should be noted that the second stop strip can be one strip or can be composed of several strips. In this embodiment, three strips are selected, and the gaps between the strips are used for fluid to pass through.

[0023] In this way, the second stop strip is arranged on the inner side wall of the second connecting piece, so that the first restoring piece can have a longer stroke for retraction and extension.

[0024] In one embodiment of the utility model, the second connecting pipe is sleeved on the mating joint body, and the second connecting pipe is provided with a plurality of second connecting plates at one end close to the mating joint body, and the second connecting plates are provided with second positioning holes, and the outer wall of the mating joint body is provided with a plurality of second positioning protrusions matching the second positioning holes, and the second positioning holes cooperate with the second positioning protrusions so that the second connecting pipe is clamped with the mating joint body, and a third sealing ring is provided between the second connecting pipe and the mating joint body.

[0025] With such a setting, the second connecting pipe fitting is detachably sleeved on the mating joint body, facilitating the disassembly and repair of the mating intercepting joint, and the third sealing ring ensures the sealing between the two.

[0026] In an embodiment of the present utility model, the second valve core includes a fourth sealing ring. A second installation ring groove is formed on the outer side wall of the second valve core, and the fourth sealing ring is installed in the second installation ring groove.

[0027] With such a setting, the fourth sealing ring is elastic. On the premise of ensuring the sealing effect, it can also reduce the frictional force suffered by the second valve core in the mating joint body. Therefore, the restoring force provided by the second restoring member can be reduced, and the restoring force required by the first restoring member can also be reduced. As a result, the insertion force applied to the mating intercepting joint can also be reduced, and it is easier to assemble the mating intercepting joint, improving the installation experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 A cross-sectional view of an intercepting joint according to an embodiment of the present application;

[0030] Figure 2 An exploded view of an intercepting joint according to an embodiment of the present application;

[0031] Figure 3 A perspective view of a joint body according to an embodiment of the present application from one angle;

[0032] Figure 4 A perspective view of a joint body according to an embodiment of the present application from another angle;

[0033] Figure 5 A perspective view of a first intercepting valve according to an embodiment of the present application from one angle;

[0034] Figure 6 A perspective view of a first intercepting valve according to an embodiment of the present application from another angle;

[0035] Figure 7 A perspective view of a first connecting pipe fitting according to an embodiment of the present application from one angle;

[0036] Figure 8 A perspective view of a first connecting pipe fitting according to an embodiment of the present application from another angle;

[0037] Figure 9 The left view of the first connecting pipe of an embodiment of the present application;

[0038] Figure 10 The sectional view of the two-way throttling component of an embodiment of the present application after assembly;

[0039] Figure 11 The exploded view of the cooperating throttling joint of an embodiment of the present application;

[0040] Figure 12 The perspective view of one angle of the cooperating joint body of an embodiment of the present application;

[0041] Figure 13 The perspective view of another angle of the cooperating joint body of an embodiment of the present application;

[0042] Figure 14 The perspective view of one angle of the second throttling valve of an embodiment of the present application;

[0043] Figure 15 The perspective view of another angle of the second throttling valve of an embodiment of the present application;

[0044] Figure 16 The perspective view of one angle of the first connecting pipe of an embodiment of the present application;

[0045] Figure 17 The perspective view of another angle of the first connecting pipe of an embodiment of the present application;

[0046] Figure 18 The right view of the first connecting pipe of an embodiment of the present application.

[0047] Reference numerals: 10, joint body; 11, first closing inclined surface; 12, first positioning projection; 20, first connecting pipe member; 21, first pipe connector; 211, seventh sealing ring; 22, first limiting step; 23, first abutting strip; 24, first connecting plate; 241, first positioning hole; 30, first shut-off valve; 31, first limiting member; 311, first limiting ring; 312, second limiting ring; 32, first connecting frame; 33, first valve core; 331, first sealing ring; 332, second closing inclined surface; 3321, first mounting ring groove; 333, abutting block; 334, protruding portion; 34, valve top strip; 40, first reset member; 50, second sealing ring; 60, mating joint body; 61, throttling port; 62, second limiting step; 63, second positioning projection; 70, second connecting pipe member; 71, second pipe connector; 711, eighth sealing ring; 72, second abutting strip; 73, second connecting plate; 731, second positioning hole; 80, second shut-off valve; 81, second limiting member; 811, third limiting ring; 82, second connecting frame; 83, second valve core; 831, fourth sealing ring; 832, second mounting ring groove; 833, protruding strip; 90, second reset member; 100, third sealing ring; 110, fifth sealing ring; 120, spacer ring; 130, sixth sealing ring; 140, lock spring; 150, fixing ring; 160, protective cover. Detailed implementation manners

[0048] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0049] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In this application, unless otherwise clearly specified and defined, the first feature being "on", "under" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or diagonally above the second feature, or just means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or diagonally below the second feature, or just means that the horizontal height of the first feature is less than that of the second feature.

[0052] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application pertains. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0053] As Figures 1-9 shown, on the one hand, this application claims protection for a shut-off joint, one end of which is used to connect to a mating joint, and the other end is used to connect to a connecting pipe (not shown in the figure). It should be noted that the mating joint and the shut-off joint of this application can be specifically set as a matching male joint and female joint according to the usage requirements, and the connecting pipe can be specifically set as a flexible hose; the mating joint can be an ordinary SAE joint, so that the shut-off joint of this application can be used as a one-way shut-off joint, or the mating joint can also be the mating shut-off joint described below in this application, and form a two-way shut-off assembly with the shut-off joint for use.

[0054] As Figure 1 、 2As shown in the figure, the intercepting joint includes: a joint body 10, a first connecting pipe 20, a first intercepting valve 30 and a first reset member 40. One end of the first connecting pipe 20 is provided with a first pipe connector 21, and the other end is fixedly connected to the joint body 10. The inner side wall of the joint body 10 is provided with a first closed inclined surface 11. The first intercepting valve 30 can move along the axial direction of the joint body 10 and cooperate with the first closed inclined surface 11 to open and close the fluid passage of the joint body 10. One end of the first reset member 40 abuts against the first connecting pipe 20, and the other end abuts against the first intercepting valve 30. When the mating joint is inserted into the intercepting joint, the mating joint applies a force to the first intercepting valve 30 to make it move towards the first connecting pipe 20, and the fluid passage of the joint body 10 is opened. When the mating joint is pulled out of the intercepting joint, the first reset member 40 applies a force to the first intercepting valve 30 to make it move away from the first connecting pipe 20, and the fluid passage of the joint body 10 is closed. It should be noted that the first reset member 40 usually uses a return spring, but of course it can also be any component that provides a reset force, and the present application does not limit this. When the first intercepting valve 30 is closed, the sealing of the fluid passage of the joint body 10 is achieved on the first closed inclined surface 11. The first pipe connector 21 is used to connect to the connecting pipe, and a seventh sealing ring 211 is provided on the first pipe connector 21 to increase the sealing performance of the connection.

[0055] It can be understood that the first intercepting valve 30 cooperates with the first closed inclined surface 11 to achieve sealing. On the one hand, it can make the first intercepting valve 30 and the inner side wall of the joint body 10 fit tightly under the guidance of the first closed inclined surface 11, and there will be no fluid leakage. On the other hand, it can avoid closing across the minimum inner diameter of the inclined surface, effectively avoiding the huge frictional force suffered by the first intercepting valve 30 at the bent part of the inclined surface. The reset force provided by the first reset member 40 can be greatly reduced, so that the insertion force applied to the mating joint can also be greatly reduced, and it is easier to assemble the mating joint, greatly improving the installation experience.

[0056] Specifically, as shown in FIGS. Figure 1 , 2 , 5, and 6, the first intercepting valve 30 is provided with four abutting blocks 333 extending away from the joint body 10. The surface area of the abutting blocks 333 in the radial direction is smaller than that of the first intercepting valve 30, and when the mating joint is inserted into the intercepting joint, it abuts against the abutting blocks 333. It should be noted that although four abutting blocks 333 are provided in this embodiment, the application does not limit the number of the abutting blocks 333. There may be one abutting block 333 or several abutting blocks 333.

[0057] It can be understood that when the mating joint is inserted, it abuts against the abutting blocks 333, avoiding the large-area blockage of the opening of the mating joint by the first intercepting valve 30. The gap between the first intercepting valve 30 and the mating joint can also allow fluid to pass through, so that the fluid flow rate can be larger. When there are several abutting blocks 333, the gap between the abutting blocks 333 can also allow fluid to pass through.

[0058] Specifically, as shown in Figure 1 , 2 , 5, and 6, the first connecting pipe 20 is sleeved on the outer side wall of the joint body. The first shut-off valve 30 includes a first limiting member 31, a first connecting frame 32, and a first valve core 33. The first limiting member 31 is connected to the first valve core 33 through the first connecting frame 32. The first valve core 33 cooperates with the first closing inclined surface 11 to open and close the fluid passage of the joint body 10. A resisting block 333 is arranged on the first valve core 33. The first limiting member 31 includes a first limiting ring 311 and a second limiting ring 312. The outer diameter of the first limiting ring 311 matches the inner diameter of the joint body 10, and the outer diameter of the second limiting ring 312 matches the outer diameter of the joint body 10. When the first reset member 40 applies a force to the first shut-off valve 30 to move it away from the first connecting pipe 20, the second limiting ring 312 can be in abutting cooperation with the pipe wall of the joint body 10 to limit the first shut-off valve 30 from continuing to move away from the first connecting pipe 20. It should be noted that in this embodiment, the number of the first connecting frames 32 is four. One or more first connecting frames 32 can also be selected. The present application does not limit the number of the first connecting frames 32. The first reset member 40 passes through the first limiting ring 311 and the second limiting ring 312 and abuts against the side of the first valve core 33 close to the first connecting pipe 20. A protruding portion 334 is provided on the side of the first valve core 33 close to the first connecting pipe 20. The four first connecting frames 32 are circumferentially distributed along the protruding portion 334. The first reset member 40 is sleeved on the protruding portion 334, so as to prevent the first reset member 40 from shifting.

[0059] It can be understood that the matching of the outer diameter of the first limiting ring 311 with the inner diameter of the joint body 10 enables the entire first shut-off valve 30 to always remain in the middle position of the joint body 10 after closing. The matching of the outer diameter of the second limiting ring 312 with the outer diameter of the joint body 10 enables the entire first shut-off valve 30 to always remain in the middle position of the first connecting pipe 20 after opening. On the other hand, it can prevent the first shut-off valve 30 from being inserted into the joint body 10 excessively, limit the first shut-off valve 30 to cooperate on the first closing inclined surface 11 to achieve closing, and avoid the first shut-off valve 30 from crossing the minimum inner diameter of the first closing inclined surface 11.

[0060] Specifically, as shown in Figure 1 , 2 , 7, and 8, a first limiting step 22 is formed by reducing the inner diameter of the inner side wall of the first connecting pipe 20. When the mating joint applies a force to the first shut-off valve 30 to move it towards the first connecting pipe 20, the second limiting ring 312 can be in abutting cooperation with the first limiting step 22 to limit the first shut-off valve 30 from continuing to move towards the first connecting pipe 20.

[0061] It can be understood that the second limiting ring 312 can be in abutting cooperation with the first limiting step 22 to prevent the first reset member 40 from being overly compressed.

[0062] Specifically, as Figure 1 、 2 、5, and 6 show, the first valve core 33 includes a first sealing ring 331. A second closed inclined surface 332 is provided on the outer side wall of the first valve core 33. A first installation ring groove 3321 is formed on the second closed inclined surface 332, and the first sealing ring 331 is installed in the first installation ring groove 3321.

[0063] It can be understood that the second closed inclined surface 332 can cooperate and guide with the first closed inclined surface 11, so that the first valve core 33 is subject to less friction in the joint body 10. And the first sealing ring 331 is elastic, which can also reduce the friction force of the first valve core 33 in the joint body 10 on the premise of ensuring the sealing effect. Therefore, the reset force provided by the first reset member 40 can be reduced, and thus the insertion force applied to the mating joint can also be reduced, making it easier to assemble the mating joint and improving the installation experience.

[0064] Specifically, as Figure 1 、 9 shown, a first abutting strip 23 is provided at the part where the inner diameter of the inner side wall of the first connecting pipe member 20 is reduced, and one end of the first reset member 40 abuts against the first abutting strip 23.

[0065] It can be understood that the first abutting strip 23 is arranged at the part where the inner diameter of the inner side wall of the first connecting pipe member 20 is reduced, which can radially limit the first reset member 40 by using the part where the inner diameter is reduced, and can also provide a longer stroke for the retraction and extension of the first reset member 40.

[0066] Specifically, as Figures 1-4 、7, and 8 show, the first connecting pipe member 20 is sleeved on the joint body 10. Four first connecting plates 24 are provided at one end of the first connecting pipe member 20 close to the joint body 10. First positioning holes 241 are provided on the first connecting plates 24. A plurality of first positioning protrusions 12 matching the first positioning holes 241 are provided on the outer side wall of the joint body 10. The cooperation between the first positioning holes 241 and the first positioning protrusions 12 enables the first connecting pipe member 20 to be clamped with the joint body 10. A second sealing ring 50 is provided between the first connecting pipe member 20 and the joint body 10. It should be noted that four first connecting plates 24 are provided in this embodiment, but the application does not limit the number of the first connecting plates 24.

[0067] It can be understood that the first connecting pipe member 20 and the joint body 10 are detachably sleeved, which is convenient for disassembling and repairing the throttling joint, and the second sealing ring 50 ensures the sealing between the two.

[0068] Specifically, as Figure 1 、2 As shown, the shut-off joint also includes a fifth sealing ring 110, a spacer ring 120 and a sixth sealing ring 130. The fifth sealing ring 110, the spacer ring 120 and the sixth sealing ring 130 of the present application are sequentially embedded in the joint body 10, and are all arranged on the side of the first closed inclined surface 11 away from the first connecting piece 20. The mating joint can cooperate with the joint body 10, and at the same time squeeze the fifth sealing ring 110 and the sixth sealing ring 130 to deform, so that when the shut-off joint and the mating joint are plugged in, they can play a double sealing role to meet the use requirements of the assembly seal between the connecting joint shut-off joint and the mating joint. The specific assembly structure of the applicant's prior patent has been disclosed, and will not be repeated here.

[0069] Specifically, Figure 1 , 2 As shown, the shut-off joint also includes a locking spring 140, a fixing ring 150, and a protective cover 160. When the mating joint is inserted, the self-locking function can be realized. The ridges on the mating joint can cooperate with the locking spring 140 to realize self-locking. The structure for realizing this function has been disclosed in the prior patent of the applicant, and will not be repeated here. When the locking spring 140 is inserted into the joint body 10 to realize the self-locking function, the protective cover 160 is clamped with the joint body 10 to protect the locking spring 140.

[0070] like Figures 10-18 As shown, on the other hand, the present application requests protection for a two-way shutoff assembly, including the above-mentioned shutoff joint and a matching shutoff joint, the matching shutoff joint including a matching joint body 60, a second connecting piece 70, a second shutoff valve 80 and a second reset piece 90, one end of the second connecting piece 70 is provided with a second pipe connector 71, and the other end is fixedly connected to the matching joint body 60, the end of the matching joint body 60 away from the second connecting piece 70 is provided with a shutoff port 61, the inner diameter of the shutoff port 61 is smaller than the inner diameter of other parts of the inner wall of the matching joint body 60, the second shutoff valve 80 can move axially along the matching joint body 60, and cooperate with the shutoff port 61 to form a matching connection. The fluid passage of the joint body 60 is opened and closed, one end of the second reset member 90 abuts against the second connecting member 70, and the other end abuts against the second shut-off valve 80, the first shut-off valve 30 extends axially away from the first connecting member 20 to form a top valve strip 34, when the matching shut-off joint is inserted into the shut-off joint, the top valve strip 34 applies force to the second shut-off valve 80 to make it move toward the second connecting member 70, and the fluid passage of the matching joint body 60 is opened, when the matching shut-off joint is pulled out of the shut-off joint, the second reset member 90 applies force to the second shut-off valve 80 to make it move away from the second connecting member 70, and the fluid passage of the matching joint body 60 is closed. The second pipe connector 71 is used to connect with the connecting pipe, and the second pipe connector 71 is provided with an eighth sealing ring 711 to increase the sealing of the connection.

[0071] It can be understood that when the mating shut-off joint is inserted into the shut-off joint, the mating joint body 60 abuts against the first shut-off valve 30, causing it to undergo an axial displacement, and the first shut-off valve 30 opens. The top valve bar 34 on the first shut-off valve 30 abuts against the second shut-off valve 80, causing it to undergo an axial displacement, and the second shut-off valve 80 opens. When the mating shut-off joint is pulled out of the shut-off joint, the first shut-off valve 30 and the second shut-off valve 80 are respectively closed under the action of the first reset member 40 and the second reset member 90. In this way, the mutual cooperation of the shut-off joint and the mating shut-off joint can achieve the effect of bidirectional shut-off, avoiding fluid leakage during the process of pipeline disassembly.

[0072] Specifically, as Figure 10 , 11 , shown in FIGS. 14 and 15, the second shut-off valve 80 includes a second limiting member 81, a second connecting frame 82, and a second valve core 83. The second limiting member 81 is connected to the second valve core 83 through the second connecting frame 82. The second valve core 83 cooperates with the shut-off port 61 to open and close the fluid passage of the mating joint body 60. The second limiting member 81 includes a third limiting ring 811. The inner diameter of the terminal of the inner side wall of the mating joint body 60 decreases to form a second limiting step 62. The outer diameter of the third limiting ring 811 matches the large inner diameter portion of the mating joint body 60. When the second reset member 90 applies a force to the second shut-off valve 80 to make it move away from the second connecting pipe member 70, the abutting cooperation between the third limiting ring 811 and the second limiting step 62 can limit the second shut-off valve 80 from continuing to move away from the second connecting pipe member 70. It should be noted that the second limiting member 81 is a hollow cylindrical structure. The second limiting member 81 passes through the second limiting member 81 and abuts against the side of the second connecting frame 82 close to the second connecting pipe member 70. The second valve core 83 extends a protruding strip 833 toward the side close to the second connecting pipe member 70. The protruding strip 833 passes through the second connecting frame 82, and the second reset member 90 is sleeved on the protruding strip 833, which can prevent the second reset member 90 from shifting.

[0073] It can be understood that the outer diameter of the third limiting ring 811 matches the large inner diameter portion of the mating joint body 60, so that the entire second shut-off valve 80 always remains in the middle position of the mating joint body 60 after being closed. The abutting cooperation between the third limiting ring 811 and the second limiting step 62 can prevent the second shut-off valve 80 from being overly inserted into the mating joint body 60.

[0074] Specifically, as Figure 10 , 18 shown, the inner side wall of the second connecting pipe member 70 is provided with a second abutting strip 72, and one end of the second reset member 90 abuts against the second abutting strip 72.

[0075] It can be understood that the second abutting strip 72 is provided on the inner side wall of the second connecting pipe member 70, which can make the first reset member 40 have a longer stroke for retraction and extension.

[0076] Specifically, as Figures 10-13 shown in FIGS. 16 and 17, the second connecting pipe 70 is sleeved on the mating joint body 60. Four second connecting plates 73 are provided at one end of the second connecting pipe 70 close to the mating joint body 60. Second positioning holes 731 are provided on the second connecting plates 73. A number of second positioning protrusions 63 matching the second positioning holes 731 are provided on the outer side wall of the mating joint body 60. The cooperation between the second positioning holes 731 and the second positioning protrusions 63 enables the second connecting pipe 70 to be clamped with the mating joint body 60. A third sealing ring 100 is provided between the second connecting pipe 70 and the mating joint body 60. It should be noted that four second connecting plates 73 are provided in this embodiment, but the present application does not limit the number of the second connecting plates 73.

[0077] It can be understood that the second connecting pipe 70 and the mating joint body 60 are detachably sleeved, which is convenient for disassembling and repairing the mating shut-off joint. The third sealing ring 100 ensures the sealing between the two.

[0078] Specifically, as Figure 10 , 11 shown in FIGS. 14 and 15, the second valve core 83 includes a fourth sealing ring 831. A second installation ring groove 832 is formed on the outer side wall of the second valve core 83. The fourth sealing ring 831 is installed in the second installation ring groove 832.

[0079] It can be understood that the fourth sealing ring 831 is elastic. On the premise of ensuring the sealing effect, it can also reduce the friction force of the second valve core 83 on the mating joint body 60. Therefore, the restoring force provided by the second restoring member 90 can be reduced, and the restoring force required by the first restoring member 40 can also be reduced. Thus, the insertion force applied to the mating shut-off joint can also be reduced, and it is easier to assemble the mating shut-off joint, improving the installation experience.

[0080] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0081] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A cut-off joint, characterized in that, The intercepting joint includes: a joint body (10), a first connecting pipe (20), a first shut-off valve (30), and a first reset member (40). One end of the first connecting pipe (20) is provided with a first pipe connector (21), and the other end is fixedly connected to the joint body (10). The inner side wall of the joint body (10) is provided with a first sealing inclined surface (11). The first shut-off valve (30) can move axially along the joint body (10) and cooperate with the first sealing inclined surface (11) to open and close the fluid passage of the joint body (10). One end of the first reset member (40) abuts against the first connecting pipe (20), and the other end abuts against the first shut-off valve (30). When the mating joint is inserted into the intercepting joint, the mating joint applies a force to the first shut-off valve (30) to make it move towards the first connecting pipe (20), and the fluid passage of the joint body (10) is opened. When the mating joint is pulled out of the intercepting joint, the first reset member (40) applies a force to the first shut-off valve (30) to make it move away from the first connecting pipe (20), and the fluid passage of the joint body (10) is closed.

2. The intercepting joint according to claim 1, characterized in that, The first shut-off valve (30) is provided with a contact block (333) extending away from the joint body (10). The surface area of the contact block (333) in the radial direction is smaller than that of the first shut-off valve (30), and it abuts against the contact block (333) when the mating joint is inserted into the intercepting joint.

3. The intercepting joint according to claim 2, wherein, The first connecting pipe (20) is sleeved on the outer side wall of the joint body. The first shut-off valve (30) includes a first limiting member (31), a first connecting frame (32), and a first valve core (33). The first limiting member (31) is connected to the first valve core (33) through the first connecting frame (32). The first valve core (33) cooperates with the first sealing inclined surface (11) to open and close the fluid passage of the joint body (10). The contact block (333) is arranged on the first valve core (33). The first limiting member (31) includes a first limiting ring (311) and a second limiting ring (312). The outer diameter of the first limiting ring (311) matches the inner diameter of the joint body (10), and the outer diameter of the second limiting ring (312) matches the outer diameter of the joint body (10). When the first reset member (40) applies a force to the first shut-off valve (30) to make it move away from the first connecting pipe (20), the second limiting ring (312) can abut against the pipe wall of the joint body (10) to cooperate and limit the first shut-off valve (30) from continuing to move away from the first connecting pipe (20).

4. The intercepting joint according to claim 3, characterized in that, The inner wall inner diameter of the first connecting pipe (20) is reduced to form a first limiting step (22). When the mating joint applies force to the first shut-off valve (30) to move it towards the first connecting pipe (20), the second limiting ring (312) can be in abutting fit with the first limiting step (22) to limit the first shut-off valve (30) from continuing to move towards the first connecting pipe (20).

5. The intercepting joint according to claim 3, characterized in that, The first valve core (33) includes a first sealing ring (331). A second closing inclined surface (332) is provided on the outer side wall of the first valve core (33). A first mounting ring groove (3321) is formed on the second closing inclined surface (332), and the first sealing ring (331) is installed in the first mounting ring groove (3321).

6. The intercepting joint according to claim 1, wherein A first abutting strip (23) is provided at the part where the inner wall inner diameter of the first connecting pipe (20) is reduced, and one end of the first resetting member (40) abuts against the first abutting strip (23).

7. The intercepting joint according to claim 1, wherein, The first connecting pipe (20) is sleeved on the joint body (10). A plurality of first connecting plates (24) are provided at one end of the first connecting pipe (20) close to the joint body (10). First positioning holes (241) are provided on the first connecting plates (24). A plurality of first positioning protrusions (12) matching the first positioning holes (241) are provided on the outer side wall of the joint body (10). The cooperation between the first positioning holes (241) and the first positioning protrusions (12) enables the first connecting pipe (20) to be clamped with the joint body (10). A second sealing ring (50) is provided between the first connecting pipe (20) and the joint body (10).

8. A two-way flow interception component, characterized in that Comprising a shut-off joint and a mating shut-off joint as described in any one of claims 1-7, the mating shut-off joint includes a mating joint body (60), a second pipe fitting (70), a second shut-off valve (80), and a second reset member (90). One end of the second pipe fitting (70) is provided with a second pipe connector (71), and the other end is fixedly connected to the mating joint body (60). The end of the mating joint body (60) away from the second pipe fitting (70) is provided with a shut-off port (61), and the inner diameter of the shut-off port (61) is smaller than the inner diameter of other parts of the inner wall of the mating joint body (60). The second shut-off valve (80) can move axially along the mating joint body (60) and cooperate with the shut-off port (61) to open and close the fluid passage of the mating joint body (60). One end of the second reset member (90) abuts against the second pipe fitting (70), and the other end abuts against the second shut-off valve (80). The first shut-off valve (30) axially extends away from the first pipe fitting (20) to form a valve top bar (34). When the mating shut-off joint is inserted into the shut-off joint, the valve top bar (34) applies a force to the second shut-off valve (80) to cause it to move towards the second pipe fitting (70), and the fluid passage of the mating joint body (60) is opened. When the mating shut-off joint is pulled out of the shut-off joint, the second reset member (90) applies a force to the second shut-off valve (80) to cause it to move away from the second pipe fitting (70), and the fluid passage of the mating joint body (60) is closed.

9. The two-way flow interception component according to claim 8, characterized in that, The second shut-off valve (80) includes a second limiting member (81), a second connecting frame (82), and a second valve core (83). The second limiting member (81) is connected to the second valve core (83) through the second connecting frame (82). The second valve core (83) cooperates with the shut-off port (61) to open and close the fluid passage of the mating joint body (60). The second limiting member (81) includes a third limiting ring (811). The inner diameter of the terminal of the inner wall of the mating joint body (60) decreases to form a second limiting step (62). The outer diameter of the third limiting ring (811) matches the large inner diameter part of the mating joint body (60). When the second reset member (90) applies a force to the second shut-off valve (80) to cause it to move away from the second pipe fitting (70), the third limiting ring (811) can abut against the second limiting step (62) to limit the second shut-off valve (80) from continuing to move away from the second pipe fitting (70).

10. The two-way interception assembly according to claim 8, characterized in that, The inner wall of the second pipe fitting (70) is provided with a second abutting strip (72), and one end of the second reset member (90) abuts against the second abutting strip (72).

11. The two-way interception component according to claim 8, wherein The second connecting pipe member (70) is sleeved on the mating joint body (60). The second connecting pipe member (70) is provided with a plurality of second connecting plates (73) at one end close to the mating joint body (60). Second positioning holes (731) are provided on the second connecting plates (73). A plurality of second positioning protrusions (63) matching the second positioning holes (731) are provided on the outer side wall of the mating joint body (60). The cooperation between the second positioning holes (731) and the second positioning protrusions (63) enables the second connecting pipe member (70) to be clamped with the mating joint body (60). A third sealing ring (100) is provided between the second connecting pipe member (70) and the mating joint body (60).

12. The two-way flow interception component according to claim 9, wherein, The second valve core (83) includes a fourth sealing ring (831). A second installation ring groove (832) is formed on the outer side wall of the second valve core (83). The fourth sealing ring (831) is installed in the second installation ring groove (832).

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