One-way valve

Abstract

The one-way valve comprises a valve seat, a magnetic part, a limiting part and a diaphragm, the valve seat is provided with a valve port, and the magnetic part can attract the diaphragm to close the valve port; the limiting part comprises two independent limiting claw parts, the two limiting claw parts are fixedly connected with the valve seat correspondingly, each limiting claw part comprises two clamping claws and a blocking structure connected between the two clamping claws, the two clamping claws are located on the two sides of the magnetic piece correspondingly and used for limiting rotation of the magnetic piece, and the blocking structures are located on the side, away from the valve port, of the magnetic piece; and the magnetic piece is prevented from being separated from the valve seat. The limiting part can ensure the installation stability of the magnetic piece and the valve seat, meanwhile, the material consumption of the limiting part is reduced, the material utilization rate is increased, and then the overall cost of the one-way valve is reduced.

Description

Technical Field

[0001] The present application relates to the field of fluid control technology, and in particular to a one-way valve. Background Art

[0002] The diaphragm type one-way valve adopts a diaphragm design. The diaphragm grinding surface is sealed with the valve seat sealing surface to play a one-way cut-off role. It is widely used in refrigeration systems. Because the product adopts a guide device and a magnet self-priming structure inside, the one-way valve is not restricted by the installation angle and the size of the positive pressure, and the valve can be automatically opened and closed.

[0003] The existing diaphragm type one-way valve, its valve seat assembly includes a limit ring, a magnetic part, a valve seat and a diaphragm and other parts, wherein the limit ring includes an annular body part, the annular body part is formed into a slot by stamping, after the annular body part is fixed to the valve seat along the circumferential direction, the magnetic part can be pressed by the slot and the magnetic part can be limited to limit the rotation of the magnetic part, or the annular body part is provided with a claw, after the annular body part is fixed to the valve seat along the circumferential direction, the claw and the magnetic part can be limited to prevent the magnetic part from rotating relative to the valve seat. With such a setting, the limit ring uses more materials as a whole, and the middle position of the annular body part needs to be hollowed out, the actual material utilization rate is very low and the cost is high.

[0004] Therefore, how to improve the material utilization rate of the one-way valve and reduce the cost is a technical problem that technical personnel in this field need to solve urgently. Utility Model Content

[0005] The purpose of the present application is to provide a one-way valve, which can improve the material utilization rate of the one-way valve and reduce the cost.

[0006] In order to solve the above-mentioned technical problems, the present application provides a one-way valve, including a valve seat, a magnetic member, a limiting portion and a diaphragm, the valve seat is provided with a valve port, the magnetic member can attract the diaphragm to close the valve port; the limiting portion includes two independent limiting claw portions, the two limiting claw portions are respectively fixedly connected to the valve seat, the limiting claw portion includes two claws and a blocking structure connected between the two claws, the two claws are respectively located on both sides of the magnetic member and are used to limit the rotation of the magnetic member, the blocking structure is located on the side of the magnetic member away from the valve port, and is used to limit the separation of the magnetic member from the valve seat.

[0007] Optionally, first extension sections are respectively provided on both sides of the blocking structure extending along the length direction of the magnetic member, and the first extension sections include the claws;

[0008] Alternatively, the two sides of the blocking structure are respectively provided with second extension sections extending toward both sides along the width direction of the magnetic member, and the second extension sections include the claws.

[0009] The present application also provides another one-way valve, including a valve seat, a magnetic member, a limiting portion and a diaphragm, the valve seat is provided with a valve port, the magnetic member can attract the diaphragm to close the valve port; the limiting portion is fixedly connected to the valve seat, the limiting portion includes a connecting rod and at least two limiting claws, the limiting claw includes two claws and a blocking structure connected between the two claws, the two claws are respectively located on both sides of the magnetic member and are used to limit the rotation of the magnetic member, the blocking structure is located on the side of the magnetic member away from the valve port, and is used to limit the separation of the magnetic member from the valve seat, the connecting rod is fixedly connected to the blocking structure or is integrally formed.

[0010] Optionally, there are two limiting claws, the connecting rod is located between the two limiting claws, and an end of the connecting rod is fixedly connected to or integrally formed with the blocking structure.

[0011] Optionally, the width of the connecting rod is smaller than the width of the magnetic member.

[0012] Optionally, first extension sections are respectively provided on both sides of the blocking structure extending along the length direction of the magnetic member, and the first extension sections include the claws;

[0013] Alternatively, the two sides of the blocking structure are respectively provided with second extension sections extending toward both sides along the width direction of the magnetic member, and the second extension sections include the claws.

[0014] The present application also provides another one-way valve, including a valve seat, a magnetic member, a limiting portion and a diaphragm, the valve seat being provided with a valve port, the magnetic member being capable of attracting the diaphragm to close the valve port; the limiting portion comprising a limiting rod, the two ends of the limiting rod being respectively fixedly connected to the valve seat, and the limiting rod being located on a side of the magnetic member away from the valve seat, and being used to limit the magnetic member from separating from the valve seat, the limiting rod being provided with a first limiting structure on a side facing the magnetic member, and the magnetic member being provided with a second limiting structure on a side facing the limiting rod, the limiting portion being able to cooperate through the first limiting structure and the second limiting structure to limit the magnetic member from rotating relative to the valve seat; the first limiting structure or the second limiting structure being a limiting groove.

[0015] Optionally, one of the first limiting structure and the second limiting structure is the limiting groove, and the other is a limiting protrusion matched with the limiting groove.

[0016] Optionally, a stamping protrusion is provided on the surface of the limiting rod, and the stamping protrusion forms the limiting protrusion.

[0017] Optionally, the longitudinal section of the limiting groove is a square structure, an arc structure or a V-shaped structure.

[0018] In the one-way valve provided in the present application, the magnetic part is limited by a limiting portion, and the limiting portion is configured to have a structure including a limiting claw portion, or a structure including a connecting rod and a limiting claw portion, or a structure including a limiting rod. This can reduce the material usage of the limiting portion and improve the material utilization rate while ensuring the installation stability of the magnetic part and the valve seat, thereby reducing the overall cost of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of a one-way valve provided in an embodiment of the present application;

[0020] Figure 2 yes Figure 1 A cross-sectional view of the middle valve component;

[0021] Figure 3 is a side view of the first valve component provided in the embodiment of the present application with the diaphragm removed;

[0022] Figure 4 yes Figure 3 A cross-sectional view of

[0023] Figure 5 yes Figure 3 Exploded diagram of

[0024] Figure 6 is a side view of the second valve component provided in the embodiment of the present application with the diaphragm removed;

[0025] Figure 7 yes Figure 6 A cross-sectional view of

[0026] Figure 8 yes Figure 6 Exploded diagram of

[0027] Fig. 9 yes Figure 8 A schematic diagram of the structure of the middle limiter;

[0028] Fig.10 It is a structural schematic diagram of another limiting part;

[0029] Fig.11 is a side view of the third valve component provided in the embodiment of the present application with the diaphragm removed;

[0030] Fig.12 yes Fig.11 A cross-sectional view of

[0031] Fig.13 yes Fig.11 A cross-sectional view of the magnetic member;

[0032] Fig.14is a side view of the fourth valve component provided in the embodiment of the present application with the diaphragm removed;

[0033] Fig.15 yes Fig.14 A cross-sectional view of

[0034] Fig.16 yes Fig.14 A cross-sectional view from another angle;

[0035] Fig.17 yes Fig.16 A cross-sectional view of the magnetic member;

[0036] Fig.18 yes Fig.14 A cross-sectional view from another angle;

[0037] Fig.19 yes Fig.18 Cross-sectional view of the magnetic part.

[0038] Attached Figure 1-Figure 19 In the figure, the reference numerals are described as follows:

[0039] 10 limiting part; 20 valve seat, 201 first step part, 202 second step part, 203 valve port; 30 magnetic member; 40 first cylinder; 50 second cylinder; 60 diaphragm;

[0040] 1 limiting claw portion, 11 blocking structure, 12 clamping claw;

[0041] 2 connecting rod;

[0042] 3-limiting rod, 31-stamping groove;

[0043] 4 limiting grooves;

[0044] 5 Limiting protrusions. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The present application embodiment provides a one-way valve, wherein, Figure 1 As shown, the one-way valve includes a valve body and a valve component 60. The valve body includes a first cylinder 40 and a second cylinder 50. The first cylinder 40 and the second cylinder 50 are respectively fixed on both sides of the valve component 60 by welding.

[0047] like Figure 1 and Figure 2As shown, the valve component 60 includes a valve seat 20, a magnetic member 30, a limiting portion 10 and a diaphragm 601, wherein the valve seat 20 is provided with a valve port 203, the valve port 203 is connected to the first cylinder 40 and the second cylinder 50, and the magnetic member 30 can attract the diaphragm 601 through magnetic force to close the valve port 203. The limiting portion 10 is fixedly connected to the valve seat 20, and is used to limit the magnetic member 30 from being separated from the valve seat 20, so as to ensure the installation stability of the magnetic member 30.

[0048] like Figure 5 As shown, the valve seat 20 includes a first step portion 201 and a second step portion 202, wherein the first step portion 201 is located on a side close to the valve port 203 (i.e., a side close to the entrance), and both ends of the magnetic member 30 overlap the step surface of the first step portion 201. The magnetic member 30 is a strip structure, and both ends of the limiting portion 10 overlap the step surface of the second step portion 202 respectively, and can be fixed to the step surface of the second step portion 202 by welding, thereby achieving fixation to the valve seat 20.

[0049] The limiting portion 10 includes a blocking structure 11 and a first limiting structure, and the magnetic component 30 includes a second limiting structure. When the limiting portion 10 and the valve seat 20 are in a fixed state, the blocking structure 11 is located on the side of the magnetic component 30 away from the valve port 203, and is used to limit the separation of the magnetic component 30 from the valve seat 20. At the same time, the limiting portion 10 can also limit the rotation of the magnetic component 30 relative to the valve seat 20 through the first limiting structure and the second limiting structure, thereby ensuring the installation stability of the magnetic component 30.

[0050] In this embodiment, the limiting portion 10 may be as follows: Figure 3-Figure 5 The structure shown includes two limit claw portions 1, and the two limit claw portions 1 are independent of each other. The two limit claw portions 1 are respectively fixedly connected to the valve seat 20, and each limit claw portion 1 is respectively provided with a blocking structure 11 and the above-mentioned first limit structure. The two limit claw portions 1 are respectively located at the axial ends of the magnetic component 30. When the limit claw portion 1 is fixed to the valve seat 20, the two limit claw portions 1 can act on the magnetic component 30 from both ends respectively to limit the magnetic component 30 from being separated from or rotating relative to the valve seat 20.

[0051] Specifically, the limiting claw portion 1 includes two claws 12. In the installed state, the two claws 12 are respectively located on both sides of the magnetic member 30 (such as Figure 3 As shown), the two side walls of the magnetic member 30 act to limit the rotation of the magnetic member 30. At this time, the two claws 12 form the first limiting structure, and the two side walls of the magnetic member 30 and the claws 12 form the second limiting structure. The two claws 12 are respectively fixedly connected to the blocking structure 11 or integrally formed. Such a setting can simplify the overall structure and molding process of the limiting part 10.

[0052] The limiting part 10 limits the magnetic member 30 from being separated from or rotating relative to the valve seat 20 through two independent limiting claws 1. The overall structure of the limiting part 10 is simple, thereby making the overall structure of the one-way valve simple. Compared with the solution of providing a limiting ring and fixing or integrally forming the two claws 12 with the limiting ring, this solution can reduce the material used in the limiting part 10, improve material utilization, and reduce costs.

[0053] like Figure 6-Figure 10 As shown, the limiting part 10 may also include a connecting rod 2 and two limiting claws 1, wherein the connecting rod 2 is disposed between the two limiting claws 1, and the two ends of the connecting rod 2 are respectively fixed or integrally formed with the blocking structures 11 of the two limiting claws 1. In this case, the limiting part 10 can be manufactured and installed as a whole, simplifying the processing and assembly processes.

[0054] By connecting the connecting rod 2 between the two limiting claws 1, the overall structural strength of the limiting part 10 can be increased, and the probability of deformation of the limiting part 10 can be reduced. In addition, the connecting rod 2 is a strip structure arranged along the length direction of the magnetic part 30. While the connecting rod 2 plays a connecting role between the blocking structures 11 of the two claws 12, it can also play a role in blocking and limiting the magnetic part 30, preventing the magnetic part 30 from separating from the valve seat 20, increasing the contact area between the limiting part 10 and the magnetic part 30, improving the limiting stability, and reducing the probability of deformation of the blocking structure 11. It can also provide support for the magnetic part 30 along the length direction to reduce the risk of breakage of the magnetic part 30.

[0055] Furthermore, the width of the connecting rod 2 is set to be less than or equal to the width of the magnetic member 30, so as to improve the limiting stability without affecting the flow channel area.

[0056] When the claw 12 and the blocking structure 11 are an integrated structure, the structure of the limiting portion 10 can be further simplified. Specifically, the blocking structure 11 can be partially bent toward one side of the valve seat 20 to form the claw 12, and the claw 12 can limit the magnetic member 30 from the side. Such a configuration can further simplify the molding process of the limiting claw portion 1. Of course, the limiting claw portion 1 can also be formed by processing to form both the blocking structure 11 and the claw 12.

[0057] Specifically, the two sides of the blocking structure 11 are respectively provided with first extension sections extending to both sides along the length direction of the magnetic member 30, and the extension direction of the first extension section is parallel to the length direction of the magnetic member 30. The first extension section is bent toward one side of the valve seat 20 to form a Figure 5 The claw 12 is shown.

[0058] Alternatively, the blocking structure 11 may have second extension sections extending along the width direction of the magnetic component 30 on both sides, and the extension direction of the second extension section is perpendicular to the length direction of the magnetic component 30. In this case, the second extension section is bent toward one side of the valve seat 20 to form a claw 12. In this case, the blocking structure 11 and the two claws 12 form a structure with a U-shaped cross-section.

[0059] Of course, in this embodiment, there is no restriction on the extension direction of the extension section provided on the blocking structure 11. The claws 12 formed by bending the extension section can limit the magnetic part 30 from both sides. When the extension direction of the extension section is perpendicular or parallel to the length direction of the magnetic part 30, the molding operation can be simplified.

[0060] When the limiting part 10 includes a connecting rod 2 and two limiting claws 1, the connecting rod 2 does not need to be fixed to the valve seat 20. When preparing the limiting claw 1, the limiting claw 1 can be a strip of metal sheet, the middle of the metal sheet forms the above-mentioned connecting rod 2, and the two axial ends of the metal sheet respectively form the above-mentioned blocking structure 11. The two sides of the blocking structure 11 are respectively provided with extension sections (first extension sections or second extension sections). The above-mentioned claws 12 can be formed by bending the extension sections, and the molding process is relatively simple. In addition, compared with the solution of setting a limiting ring and fixing the two claws 12 with the limiting ring or integrally molding them, this solution can reduce the material used in the limiting part 10, improve material utilization, and reduce costs.

[0061] Alternatively, the two ends of the connecting rod 2 may be respectively connected and fixed to the valve seat 20, and the connecting rod 2 may be provided with two groups of limiting claws 1 along the length direction. The structures of these two groups of limiting claws 1 are the same as the structure of the above-mentioned limiting claws 1, and the connecting rod 2 is fixedly connected with or integrally formed with the blocking structure 11 of the limiting claw 1.

[0062] That is to say, the limiting claw portion 1 can be set at the end of the connecting rod 2 or at other positions in the length direction of the connecting rod 2, or, one limiting claw portion 1 can be set at the end of the connecting rod 2, and the other limiting claw portion 1 can be set at the middle position of the connecting rod 2. At this time, only one end of the connecting rod 2 is directly fixedly connected to the valve seat 20.

[0063] Of course, the connecting rod 2 may be provided with a plurality of limiting claws 1 at intervals along the length direction, and the provision of two limiting claws 1 may simplify the overall structure.

[0064] In this embodiment, the limiting portion 10 can also be as follows Fig.11 and Fig.14The structure shown includes a limit rod 3, which is a strip structure and is arranged parallel to the length direction of the magnetic member 30. After the axial ends of the limit rod 3 are respectively fixed to the step surface of the second step portion 202 of the valve seat 20, the limit rod 3 is located on the side of the magnetic member 30 away from the valve port 203, which can limit the magnetic member 30 from separating from the valve seat 20. At this time, the side of the limit rod 3 facing the magnetic member 30 abuts against the magnetic member 30, and the contact area between the two is large, and the limit stability is good. In addition, the limit rod 3 can also provide support for the magnetic member 30 along the length direction, reducing the risk of the magnetic member 30 breaking. At the same time, the limit rod 3 is also provided with a first limit structure, and the rotation of the magnetic member 30 can be limited by the first limit structure and the second limit structure, thereby ensuring the installation stability of the magnetic member 30.

[0065] Since the limiting rod 3 is a strip structure and is parallel to the length direction of the magnetic member 30, the limiting rod 3 has a simple structure and uses less material, with a high material utilization rate, thus avoiding waste and effectively reducing costs. After the limiting rod 3 is fixed to the valve seat 20, the limiting rod 3 is located on the side of the magnetic member 30 away from the valve port 203, and therefore, the setting of the limiting rod 3 does not affect the flow area.

[0066] The first limiting structure is arranged on the side of the limiting rod 3 facing the magnetic member 30 , and one of the first limiting structure and the second limiting structure is a limiting groove 4 , specifically, the first limiting structure can be the limiting groove 4 , or the second limiting structure can be the limiting groove 4 .

[0067] Taking the second limiting structure as a groove as an example, Figure 12-13 As shown, the side of the limiting rod 3 facing the magnetic member 30 is located in the limiting groove 4, and the two side walls of the limiting groove 4 and the two side walls of the limiting rod 3 are correspondingly limited to limit the rotation of the magnetic member 30 and ensure the installation stability of the magnetic member 30. At this time, the inner wall surface of the limiting groove 4 is adapted to the outer wall surface of the side of the limiting rod 3 facing the magnetic member 30, as shown in FIG. Fig.12 and Fig.13 As shown, when the longitudinal section of the limiting groove 4 is a square structure, the outer wall surface of the limiting rod 3 on the side facing the magnetic part 30 is a square structure. Of course, the longitudinal section of the limiting groove 4 can also be an arc-shaped structure or a V-shaped structure, etc. The cross-section of the limiting rod 3 on the side facing the magnetic part 30 is adapted to the cross-section of the limiting groove 4.

[0068] Or, it can be Fig.16 and Fig.18 As shown, a limiting protrusion 5 is provided on one side wall of the limiting rod 3 facing the magnetic member 30 , and the limiting protrusion 5 is matched with the limiting groove 4 to form the above-mentioned first limiting structure.

[0069] When the first limiting structure is the limiting groove 4, the side wall of the magnetic component 30 forms a second limiting structure. At this time, the outer wall surface of the magnetic component 30 facing the limiting rod 3 is adapted to the inner wall surface of the limiting groove 4, or, the magnetic component 30 facing the limiting rod 3 forms the above-mentioned second limiting structure by setting a limiting protrusion 5 on one side.

[0070] The cross-sectional shape of the limiting protrusion 5 and the limiting groove 4 is the same, and the longitudinal cross-sectional shape of the limiting groove 4 can be a square structure (such as Fig.12 and Fig.13 As shown), arc-shaped structures (such as Fig.16 and Fig.17 as shown) or a V-shaped structure (as Fig.18 and Fig.19 In addition, the number of the limiting groove 4 can be one, and its length can be the same as the length of the magnetic member 30, or can be less than the length of the magnetic member 30, or the number of the limiting grooves 4 can be two or more, and the limiting grooves 4 can be arranged at intervals, and the number of the limiting protrusions 5 is the same as the limiting grooves 4 and is arranged one by one.

[0071] When the second limiting structure is configured as the limiting groove 4 , the width of the limiting rod 3 may be no greater than the width of the magnetic member 30 . This configuration can prevent the limiting rod 3 from affecting the flow area of ​​the valve component 60 .

[0072] Further, a stamping protrusion is provided on the surface of the limit rod 3, and the stamping protrusion forms the above-mentioned limit protrusion 5. That is, the limit protrusion 5 of the limit rod 3 can be formed by a stamping process, and a stamping groove 31 is formed on the side of the limit rod 3 away from the magnetic member 30 (such as Fig.14 and Fig.15 As shown), of course, the limiting protrusion 5 can also be formed by machining. When the limiting protrusion 5 is formed by a stamping process, the processing technology can be further simplified, the material consumption can be reduced, the material utilization rate and processing efficiency can be improved, and the cost can be reduced.

[0073] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A one-way valve, characterized in that: It comprises a valve seat (20), a magnetic member (30), a limiting portion (10) and a diaphragm (601), wherein the valve seat (20) is provided with a valve port (203), and the magnetic member (30) can attract the diaphragm (601) to close the valve port (203); The limiting portion (10) includes two independent limiting claw portions (1), and the two limiting claw portions (1) are respectively fixedly connected to the valve seat (20). The limiting claw portion (1) includes two clamping claws (12) and a blocking structure (11) connected between the two clamping claws (12). The two clamping claws (12) are respectively located on both sides of the magnetic component (30) and are used to limit the rotation of the magnetic component (30). The blocking structure (11) is located on a side of the magnetic component (30) away from the valve port (203) and is used to limit the separation of the magnetic component (30) from the valve seat (20).

2. The one-way valve according to claim 1, characterized in that: Both sides of the blocking structure (11) are respectively provided with first extension sections extending toward both sides along the length direction of the magnetic member (30), and the first extension sections include the claws (12); Alternatively, the blocking structure (11) is provided with second extension sections extending in both sides along the width direction of the magnetic member (30), and the second extension sections include the claws (12).

3. A one-way valve, characterized in that: It comprises a valve seat (20), a magnetic member (30), a limiting portion (10) and a diaphragm (601), wherein the valve seat (20) is provided with a valve port (203), and the magnetic member (30) can attract the diaphragm (601) to close the valve port (203); The limiting portion (10) is fixedly connected to the valve seat (20), and the limiting portion (10) includes a connecting rod (2) and at least two limiting claws (1), and the limiting claw (1) includes two clamping claws (12) and a blocking structure (11) connected between the two clamping claws (12), the two clamping claws (12) are respectively located on both sides of the magnetic component (30) and are used to limit the rotation of the magnetic component (30), the blocking structure (11) is located on the side of the magnetic component (30) away from the valve port (203), and is used to limit the separation of the magnetic component (30) from the valve seat (20), and the connecting rod (2) and the blocking structure (11) are fixedly connected or integrally formed.

4. The one-way valve according to claim 3, characterized in that: There are two limit claws (1), the connecting rod (2) is located between the two limit claws (1), and the end of the connecting rod (2) is fixedly connected to or integrally formed with the blocking structure (11).

5. The one-way valve according to claim 3, characterized in that: The width of the connecting rod (2) is smaller than the width of the magnetic member (30).

6. The one-way valve according to any one of claims 3 to 5, characterized in that: Both sides of the blocking structure (11) are respectively provided with first extension sections extending toward both sides along the length direction of the magnetic member (30), and the first extension sections include the claws (12); Alternatively, the blocking structure (11) is provided with second extension sections extending in both sides along the width direction of the magnetic member (30), and the second extension sections include the claws (12).

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