One-way valve
By setting the longitudinal arm as a stopper in the check valve, the noise problem caused by unstable pressure difference in traditional check valves is solved, and more stable valve core movement and lower noise are achieved.
Patent Information
- Application Number
- CN202420933215.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In traditional one-way valves, there is a pressure difference range from opening to full opening, which causes the valve core to rotate due to unstable pressure difference and impact the valve body, causing continuous noise.
By providing a longitudinal arm in the check valve as a circumferential limiting portion between the stopper and the valve core member, the valve core member is prevented from continuously rotating and impacting, and noise is reduced.
It effectively avoids continuous rotation and impact of the valve core piece, significantly reduces noise, and improves the working stability of the check valve.
Smart Images
Figure CN222687379U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fluid control, in particular to a one-way valve. Background Art
[0002] The check valve is a one-way pressure relief valve. The float check valve is widely used in multi-split air-conditioning systems. It is mostly installed in the liquid pipeline. The bypass application is in parallel with the expansion valve. The cooling mode is reverse closed and the heating mode is bypassed.
[0003] In a conventional one-way valve, when the pressure at the inlet end of the valve body is greater than the sum of the pressure at the outlet end and the weight of the valve core, the valve core is pushed open and the valve is in an open state; when the pressure at the inlet end is less than the sum of the pressure at the outlet end and the weight of the valve core, the valve core moves to the sealing surface of the valve seat to achieve sealing, thereby cutting off the flow of the internal medium and closing the valve.
[0004] However, in traditional one-way valves, there is a pressure difference range from the valve core being open to being fully open. During this pressure difference, the valve core rotates and hits the valve body due to the unstable pressure difference, producing continuous noise. Utility Model Content
[0005] The utility model aims to provide a one-way valve, which can reduce noise of the one-way valve by setting a longitudinal arm.
[0006] To achieve the above-mentioned purpose, the one-way valve in the utility model includes a valve body, a valve core member and a stop member, wherein the stop member is fixedly connected to the valve body and is a stamping member; the stop member includes a base, an axial limiting portion and a circumferential limiting portion, the circumferential limiting portion includes a longitudinal arm, the base and the longitudinal arm are an integral structure, the base is fixedly connected to the valve body, and the longitudinal arm extends axially to be opposite to the side wall of the valve core member; when the valve core member is located in a first position, the valve core member abuts against the valve mouth of the one-way valve, and when the valve core member is located in a second position, the valve core member abuts against the axial limiting portion, and the valve core member includes an adapter portion, and the adapter portion abuts against the circumferential limiting portion along the circumferential direction.
[0007] By adopting this method, the longitudinal arm can form a stop with the valve core member in the rotation direction of the valve core member, thereby preventing the valve core member from continuously rotating and hitting the valve core member to cause noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.
[0009] Figure 1 It is a cross-sectional view of a one-way valve in an embodiment of the utility model;
[0010] Figure 2It is a structural diagram of the stopper of the utility model, one;
[0011] Figure 3 It is the structural diagram of the stopper, part 2;
[0012] Figure 4 It is the structural diagram of the stopper, part 3;
[0013] Figure 5 It is one of the structural diagrams of the valve core parts;
[0014] Figure 6 yes Figure 5 Top view of;
[0015] Figure 7 This is the second structural diagram of the valve core;
[0016] Figure 8 yes Figure 7 A top view of
[0017] Fig. 9 for Figure 2 A top view of
[0018] Fig.10 for Figure 2 Side view, first person perspective;
[0019] Fig.11 for Figure 2 Side view, second perspective;
[0020] Fig.12 It is a schematic diagram of the state in which the valve core member and the stop member cooperate, and a side view;
[0021] Fig.13 for Fig.12 Bottom view of
[0022] Fig.14 for Fig.12 A top view of
[0023] Fig.15 The valve core and Figure 3 A side view of the stopper in cooperation with each other, first viewing angle;
[0024] Fig.16 The valve core and Figure 3 A side view of the stopper in cooperation with the stopper, a second viewing angle;
[0025] Fig.17 yes Figure 3 A top view of
[0026] Fig.18 yes Fig.15 A top view of
[0027] Fig.19 yes Figure 4 A side view of the stopper and the valve core member being matched;
[0028] Fig. 20 yes Fig.19 A top view of
[0029] Fig.21 This is a partial installation diagram of the one-way valve;
[0030] Fig. 22 It is the prior art.
[0031] Figure 1-Figure 22 middle:
[0032] 100. One-way valve;
[0033] 1. Valve body;
[0034] 2. Valve seat;
[0035] 3. Valve core member; 31. Valve core portion; 311. First cone; 312. Second cone; 32. Adaptation portion; 321. First adaptation portion; 322. Second adaptation portion; 323. Third adaptation portion; 324. Straight wall; 325. Curved wall;
[0036] 4. Stopper; 41. Base; 42. Transverse arm; 43. Longitudinal arm; 431. Arm body; 432. Protrusion; 431-1. First section; 431-2. Second section; 431-3. Limiting surface; 431a. Side edge;
[0037] 5', latch. DETAILED DESCRIPTION
[0038] The utility model provides a one-way valve, which reduces noise of the one-way valve by setting a longitudinal arm.
[0039] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0040] The axial, radial and circumferential directions in this article are defined based on the working state of the valve core of the one-way valve when opening and closing the valve port. When the valve core opens and closes the valve port, the direction of movement of the valve core is the axial direction, and the direction perpendicular to the axial direction is the radial direction. The valve core is an approximately cylindrical structure, and the direction surrounding the valve core is its circumferential direction.
[0041] Unless otherwise specified, the inside and outside in this article are defined with reference to the center axis of the valve core member, and the direction pointing to the center axis of the valve core member 3 in its radial direction is inside, and the opposite direction is outside.
[0042] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.
[0043] like Figure 1 As shown, Figure 1 is a cross-sectional view of a one-way valve 100 in an embodiment of the present utility model. Figure 1 The one-way valve 100 comprises a valve body 1, a valve core member 3 and a stopper 4, the valve body 1 forms a valve cavity, the valve seat 2 is built in the valve cavity and is fixedly connected to the valve body 1 by means of grooves or dots, the one-way valve 100 also comprises a valve port portion, the valve port portion is provided with a valve port, the inlet end and the outlet end of the one-way valve 100 are connected through the valve port; in an optional manner, the one-way valve 100 also comprises a valve seat 2, the valve seat 2 is fixedly connected to the valve body 1, the valve seat 2 comprises the aforementioned valve port portion, that is, the valve seat 2 is provided with the aforementioned valve port; of course, the valve port portion can also be an integrally formed structure with the valve body 1, which is not specifically limited herein; the stopper 4 is located in the valve cavity, and is connected to a fixed position of the valve body 1 by means of grooves or dots; Figure 2 , Figure 3 and Figure 4 As shown, Figure 2 This is a structural diagram of the stopper 4 of the utility model, one of which is Figure 3 This is a structural diagram of the stopper 4, part 2, Figure 4 It is a structural diagram of the stopper 4, the third one; combined Figure 1 Reference Figure 2-Figure 4 The stopper 4 has an annular base 41, which is used to connect with the valve body 1, and the dot positions are located on both sides of the axial direction of the base 41, so as to limit the base 41 in the axial direction; the area between the base 41 and the valve seat 2 accommodates the valve core member 3, and the valve core member 3 can move axially between the valve seat 2 and the stopper 4 and form a sealing pair with the end face of the valve mouth, so as to open, close or adjust the flow of the one-way valve 100; the improvement of the present application mainly revolves around the specific structure of the stopper 4 to avoid continuous noise in the one-way valve 100.
[0044] Specifically, refer to Figure 2-Figure 4 The stopper 4 further includes an axial limiting portion and a circumferential limiting portion. The axial limiting portion is used to form a stop with the valve core member 3 in the axial direction to limit the axial movement position of the valve core member 3; the circumferential limiting portion includes a longitudinal arm 43, which extends from the base 41 toward the side close to the valve seat 2 to adapt to the side wall of the valve core member 3, thereby stopping the valve core member 3 in the circumferential direction to prevent the valve core member 3 from continuously rotating; see Figure 5-Figure 8 , Figure 5 This is one of the structural diagrams of the valve core member 3. Figure 6 yes Figure 5 Top view of; Figure 7This is the second structural diagram of the valve core member 3. Figure 8 yes Figure 7 The top view of the valve core component 3 is as follows: the valve core component 3 specifically includes a valve core portion 31 and an adapter portion 32, the adapter portion 32 is fixedly connected to the valve core portion 31, when the valve core component 3 is located at the first position, the valve core component 3 is abutted against the valve mouth portion of the one-way valve 100, and the valve core portion 31 is used to block the valve mouth of the valve mouth portion; when the valve core component is located at the second position, the valve core component 3 is abutted against the axial limiting portion, the valve core component 3 includes an adapter portion 32, and the adapter portion 32 is abutted against the circumferential limiting portion (longitudinal arm 43) along the circumferential direction. Part of the adapter portion 32 radially protrudes from the valve core portion 31, and the adapter portion 32 and the longitudinal arm 43 are circumferentially opposed to each other; as shown in the figure, the adapter portion 32 has a curved wall, and the middle part of the curved wall is recessed toward the central axis of the valve body 1; or, the adapter portion 32 has a straight wall 324, and the extension line of the straight wall 324 intersects with the circumference of the valve body 1, and the longitudinal arm 43 can be circumferentially opposed to the straight wall 324; or, the longitudinal arm 43 can be circumferentially opposed to the curved wall. By adopting this method, the longitudinal arm 43 can form a stopper with the valve core member 3 in the rotation direction to prevent the valve core member 3 from continuously rotating and hitting the valve core member 3 and causing noise.
[0045] Since the rotation direction of the valve core component 3 may be clockwise or counterclockwise, in order to further stop the valve core component 3 circumferentially in the two rotation directions, the base 41 is provided with two longitudinal arms 43, and the two longitudinal arms 43 are symmetrical with respect to the center axis of the stop component 4; of course, the method of providing two longitudinal arms 43 can also increase the stopping strength of the stop component 4 on the valve core component 3.
[0046] In another aspect of the present application, by optimizing the structure of the stopper 4, the structure and processing steps of the one-way valve 100 are simplified. Fig. 22 As shown, Fig. 22 The conventional one-way valve structure is a conventional one-way valve 100'. A latch 5' is further provided in the valve body 1' to limit the farthest position of the axial displacement of the valve core member 3'. The farthest position of the axial displacement of the valve core member 3 refers to the farthest distance that the valve core member 3 moves in the direction away from the valve port. However, such a method results in a complex structure of the valve body 1'. In this application, please continue to combine Figure 1 and Figure 2-Figure 5 The stop member 4 also includes a cross arm 42, which serves as an axial limiting portion. The cross arm 42 extends inward from the base 41 to form an axial limit with the end of the valve core member 3 away from the valve mouth, thereby limiting the farthest axial movement of the valve core member 3. By providing the cross arm 42 on the stop member 4, the traditional latch is replaced, thereby simplifying the structure of the valve body 1.
[0047] In order to achieve the above-mentioned technical effects, the present application provides three embodiments to introduce the specific structure of the stopper 4 so that those skilled in the art can implement it more conveniently. The same parts of the following three embodiments will not be described repeatedly, and only the differences will be explained.
[0048] Embodiment 1
[0049] In this embodiment, the structure of the valve core member 3 is shown in FIG. Figure 5 and Figure 6 The structure of the stopper 4 is as follows: Figure 2 As shown, please refer to Figure 9-14 , Fig. 9 for Figure 2 A top view of
[0050] Fig.10 for Figure 2 Side view, first person perspective; Fig.11 for Figure 2 Side view, second perspective; Fig.12 It is a schematic diagram of the state in which the valve core member 3 and the stop member 4 cooperate, and a side view; Fig.13 for Fig.12 Bottom view of Fig.14 for Fig.12 A top view of the valve core member 3. The structure of the valve core member 3 is different from that of the second and third embodiments, that is, in the present embodiment, the adapter portion 32 radially protrudes from the valve core portion 31. Specifically, the number of the adapter portions 32 includes three, and the three adapter portions 32 are evenly distributed along the circumferential direction. Two adjacent adapter portions 32 form the aforementioned curved wall 325, that is, the side walls of the two adjacent adapter portions 32 are connected to form the curved wall 325; the adapter portion 32 is roughly a plate-like structure, and of course, it can also be a boss or a convex block 432 protruding from the valve core portion 31; the present embodiment is explained by taking the adapter portion 32 as a plate-like structure as an example, and the three adapter portions 32 are respectively a first adapter portion 321, a second adapter portion 322 and a third adapter portion 323; the adapter portion 32 and the two longitudinal arms 43 are projected along the axial direction, and a longitudinal arm 43 has The projection is located between the projections of the first adapter part 321 and the second adapter part 322, and the projection of another longitudinal arm 43 is located between the projections of the second adapter part 322 and the third adapter part 323, and, in the radial direction, the distance between the first longitudinal arm 43 and the second longitudinal arm 43 and the central axis of the valve core part 3 is less than the distance between the first adapter part 321, the second adapter part 322 and the second adapter part 322 and the central axis of the valve core part 3, so that the first longitudinal arm 43 and the second longitudinal arm 43 can form a circumferential stop with the adapter part 32; by setting three adapter parts 32 and two longitudinal arms 43, it can be achieved that at each turn of the valve core part 31, a maximum rotation of 120° will form a stop with the longitudinal arm 43; of course, two, four, etc. can also be set, and technical personnel in this field can set it by themselves.
[0051] In this embodiment, the valve core portion 31 has a first cone 311 and a second cone 312. The first cone 311 is used to block the valve opening. The large diameter end of the first cone 311 and the large diameter end of the second cone 312 are connected.
[0052] The adapter part 32 is fixedly connected to the second cone 312. The valve core part 31 is composed of two cones, which achieves lightness. The adapter part 32 is a plate-like structure and is fixed to the second cone 312. On the one hand, it achieves lightness, and on the other hand, it also ensures the strength of the anti-rotation.
[0053] In this embodiment, in order to reduce the radial size of the adapter part 32, the longitudinal arm 43 extends radially toward the side close to the adapter part 32. Specifically, the longitudinal arm 43 has a first section 431-1 and a second section 431-2 along the axial direction. The first section 431-1 is connected to the base 41, and the second section 431-2 is located on the side closer to the valve seat 2. The first section 431-1 is connected to the base 41, and the second section 431-2 is used to form a circumferential stop with the adapter part 32. Compared with the first section 431-1, the second section 431-2 is closer to the center axis of the valve core part 3. In this way, the first section 431-1 can avoid interference with the valve core part 31, and the second section 431-2 can form a circumferential stop with the adapter part 32, thereby reducing the radial size of the adapter part 32.
[0054] In this embodiment, in order to limit the farthest position of the axial displacement of the valve core member 3, the stop member 4 is also provided with a cross arm 42. The cross arm 42 serves as an axial limiting portion. The cross arm 42 is annular and is a flange arranged at the top of the base 41. The flange extends inward for a certain distance. The cross arm 42 and the longitudinal arm 43 are both arranged on the end surface of the base 41 facing the valve seat 2. The annular cross arm 42 can axially abut against the end surface of the adapter 32 away from the valve body 1. By setting the cross arm 42 in a ring shape, the farthest axial movement position of the three adapters 32 can be limited at any rotation angle.
[0055] In the following two embodiments, the structure of the valve core member 3 is shown in FIG. Figure 7 and Figure 8 , please refer to the structure of the stopper 4 Figure 3 and Figure 4, which is different from the first embodiment, the adapter portion 32 includes at least one plane, that is, the straight wall 324, and the longitudinal arm 43 and the straight wall 324 form a surface stop; specifically, the circumferential limit portion (longitudinal arm 43) has a first stop portion and a second stop portion, and the first stop portion and the second stop portion are opposite to the straight wall 324; when the valve core member 3 rotates, the first stop portion abuts against the straight wall 324 or the second stop portion abuts against the straight wall 324; wherein the adapter portion 32 can be a right prism, or the valve core member 3 has two adapter portions 32, and the radial cross-sections of the two adapter portions 32 are both It forms an isosceles triangle, and the vertices of the two isosceles triangles are connected to the valve core part 31 to form a bow-tie-like structure. The straight wall 324 is respectively the side wall surface of a regular prism or the wall surface where the base of the isosceles triangle is located; in the following two embodiments, when the adapter part 32 forms a regular prism, in order to limit the farthest axial position of the valve core part 3, each longitudinal arm 43 is provided with a transverse arm 42, and the transverse arm 42 extends along a straight line, and the side wall surface of the transverse arm 42 is axially against the valve core part 3; or, the transverse arm 42 is bent toward the side away from the base 41, and the end face of the transverse arm 42 can be axially against the valve core part 3. Of course, it can also be that each longitudinal arm 43 is provided with two transverse arms 42, and the two transverse arms 42 serve as axial limit parts. The two transverse arms 42 are symmetrically arranged relative to the central axis of the longitudinal arm 43, and those skilled in the art can choose according to their needs; the longitudinal arm 43 structure of the stopper 4 is further explained below through two embodiments.
[0056] Embodiment 2
[0057] In this embodiment, please refer to Figure 4 and Fig.19 and Fig. 20 , Fig.19 It is a side view of the stopper 4 and the valve core 3. Fig. 20 yes Fig.19 A top view of
[0058] The longitudinal arm 43 includes an arm body 431, and the arm body 431 has a limiting surface 431-3 facing the valve core component 3, and the limiting surface 431-3 and the straight wall 324 can form a limiting fit in the circumferential direction; the limiting surface 431-3 can be a plane or a curved surface; in a specific implementation, the radial cross-section of the arm body 431 is rectangular, and the first stop portion and the second stop portion are the two side edges 431a of the arm body 431 close to the straight wall 324, that is, the right-angle turning point of the arm body 431; the arm body 431 is parallel to the straight wall 324, and when the valve core component 3 rotates clockwise, one side edge of the arm body 431 forms a stop with the straight wall 324, and when the valve core component 3 rotates counterclockwise, the other side edge of the arm body 431 forms a stop with the straight wall 324, and the maximum angle at which the valve core component 3 is allowed to rotate at this time is the distance between the arm body 431 and the straight wall 324.
[0059] In this embodiment, the arm body 431 may also have a first section 431-1 and a second section 431-2, and the second section 431-2 is closer to the straight wall 324. The specific structure of the first section 431-1 and the second section 431-2 can be found in the description in the first embodiment. The first stop portion and the second stop portion of the arm body 431 are located in the second section 431-2, that is, they are respectively two side edges of the second section 431-2.
[0060] Embodiment 3
[0061] In this embodiment, please combine Figure 3 as well as Figure 15-18 , Fig.15 It is a side view of the valve core member 3 and the stop member 4 in cooperation, from a first viewing angle; Fig.16 is a side view of the valve core member 3 and the stop member 4 in cooperation, a second viewing angle; Fig.17 yes Figure 3 A top view of Fig.18 yes Fig.15 A top view of the longitudinal arm 43; the longitudinal arm 43 includes an arm body 431 and a protrusion 432, the protrusion 432 is connected to the arm body 431, the protrusion 432 extends toward the side close to the straight wall 324 and exceeds the longitudinal arm 43, that is, the surface of the protrusion 432 facing the straight wall 324 is closer to the straight wall 324 than the arm body 431, the protrusion 432 is arranged on both sides of the arm body 431 in the radial direction of the base 41, or on one side, when the protrusion 432 is arranged on one side of the arm body 431, since the two longitudinal arms 43 are centrally symmetrical, the positions of the two protrusions 432 are also centrally symmetrical. In this embodiment, when the valve core component 3 rotates clockwise, it can form a circumferential stop with the arm body 431 and one of the protrusions 432; when the valve core component 3 rotates counterclockwise, it can form a circumferential stop with the other of the body and the protrusion 432; in this embodiment, the arm body 431 may also include a first section 431-1 and a second section 431-2, and the protrusion 432 is arranged at an end of the second section 431-2 away from the first section 431-1.
[0062] During the assembly process of the one-way valve 100 in the present application, the valve seat 2 is placed in the valve body 1, and then the valve core member 3 is placed. Fig.21 As shown, gaps S1, S2, S3, S4 are formed between the valve core member 3 and the inner wall of the valve body 1, and then, the stop member 4 is placed into the valve body 1, and the longitudinal arm 43 is inserted into the corresponding gaps.
[0063] In the above embodiment, the stopper 4 is formed by stamping. During the forming process, a metal plate (such as stainless steel, etc.) is firstly formed into a stopper 4 that is approximately flat by a stamping process, and then the stopper 4 is bent to form the external shape structure of each stopper 4 in the present application.
[0064] The one-way valve provided by the utility model is introduced in detail above. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A one-way valve, characterized in that: It comprises a valve body, a valve core and a stopper, wherein the stopper is fixedly connected to the valve body and is a stamping part; The stopper comprises a base, an axial limiting portion and a longitudinal arm, wherein the base and the longitudinal arm are an integral structure, the base is fixedly connected to the valve body, and the longitudinal arm extends axially to be opposite to the side wall of the valve core member; When the valve core component is located at the first position, the valve core component abuts against the valve mouth of the one-way valve. When the valve core component is located at the second position, the valve core component abuts against the axial limiting portion. The valve core component includes an adapter portion, and the adapter portion abuts against the longitudinal arm along the circumferential direction.
2. The one-way valve according to claim 1, characterized in that: The number of the longitudinal arms includes two, and the two longitudinal arms are centrally symmetrical with respect to the central axis of the stopper.
3. The one-way valve according to claim 2, characterized in that: It also includes a valve seat, the valve seat is fixedly connected to the valve body, the valve core can move between the valve seat and the stopper, the valve seat includes the valve mouth, the number of the adapter parts includes three, the three adapter parts are evenly distributed along the circumferential direction, and the three adapter parts are respectively a first adapter part, a second adapter part and a third adapter part; One of the longitudinal arms is located between the first adapter portion and the second adapter portion, and the other longitudinal arm is located between the second adapter portion and the third adapter portion.
4. The one-way valve according to claim 3, characterized in that: The valve core member comprises a first cone and a second cone, wherein the first cone is used to block the valve port, and the large diameter end of the first cone is connected to the large diameter end of the second cone; The adapter portion is a plate-shaped structure and is fixedly connected to the second cone.
5. The one-way valve according to claim 2, characterized in that: The adapter portion has a straight wall, and the longitudinal arm has a first stop portion and a second stop portion, both of which are opposite to the straight wall; when the valve core component rotates, the first stop portion abuts against the straight wall; or, the second stop portion abuts against the straight wall.
6. The one-way valve according to claim 5, characterized in that: The longitudinal arm comprises an arm body, and the radial cross section of the arm body is rectangular; the first stop portion and the second stop portion are two side edges of the arm body close to the straight wall.
7. The one-way valve according to claim 5, characterized in that: The longitudinal arm comprises an arm body and a protrusion, wherein the protrusion is connected to the arm body and extends toward a side close to the straight wall.
8. The one-way valve according to any one of claims 1 to 7, characterized in that: The longitudinal arm has a first section and a second section along the axial direction, the first section is connected to the base, the second section is used to form a circumferential stop with the adapter, and the second section is closer to the center axis of the valve core member than the first section.
9. The one-way valve according to any one of claims 1 to 7, characterized in that: The stopper also includes a cross arm, which extends inward from the base and serves as the axial limiting portion.
10. The one-way valve according to claim 9, characterized in that: The base is annular, and the cross arm is a flange arranged on the top of the base.
11. The one-way valve according to any one of claims 1 to 7, characterized in that: Each of the longitudinal arms is provided with a transverse arm, and the transverse arm serves as the axial limiting portion; or, each of the longitudinal arms is provided with two transverse arms, and the two transverse arms are symmetrically arranged relative to the central axis of the corresponding longitudinal arm, and the two transverse arms serve as the axial limiting portion.
12. The one-way valve according to claim 11, characterized in that: The cross arm extends in a straight line, and the side wall surface of the cross arm abuts against the valve core component axially; or, the cross arm is bent toward a side away from the base, and the end surface of the cross arm can abut against the valve core component axially.