Electric valve

Abstract

The utility model provides an electrically operated valve which comprises a supporting seat, a sleeve arranged outside the supporting seat in a sleeved mode in the radial direction and a valve seat fixed with the sleeve, the supporting seat comprises a seat body and a fixing portion protruding outwards in the radial direction from one end of the seat body, and the fixing portion is arranged on the supporting seat. The casing pipe comprises a pipe body and a first bending part protruding outwards from the pipe body in the radial direction, and the first bending part abuts against the fixing part in the axial direction. The valve seat comprises a main body part, a first connecting part and a second connecting part; the main body part is propped against the supporting seat along the axial direction of the middle part; the first connecting part convexly extends from the edge of the main body part to the direction of the supporting seat; the second connecting part convexly extends inwards along the radial direction from one end, far away from the main body part, of the first connecting part; according to the electrically operated valve, the first connecting part and the second connecting part are formed on the valve seat to achieve riveting and fixing with the sleeve, the connecting structure is simple, and the cost is lower than that of laser welding.

Description

Technical Field

[0001] The utility model relates to an electric valve. Background Art

[0002] Existing sleeves are made of thin-walled stainless steel and are directly fixed to the valve seat. This connection is typically laser welded. This requires that the materials of the connected components be similar to each other to better meet welding requirements. These connected components also need to be made of stainless steel. However, using stainless steel for parts of the same shape and volume increases weight, manufacturing complexity, and cost.

[0003] In view of this, it is necessary to improve the existing electric valve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an electric valve to solve the problem that the existing parts matched with the sleeve must be made of the same material as the sleeve.

[0005] To achieve the above-mentioned purpose, the utility model provides an electric valve, which includes a support seat, a sleeve radially sleeved outside the support seat, and a valve seat fixed to the sleeve, the support seat including a seat body and a fixing portion protruding radially outward from one end of the seat body, the sleeve including a tube body and a first bent portion protruding radially outward from the tube body, the first bent portion abuts against the fixing portion axially, the valve seat includes a main body portion axially abutting against the support seat in the middle, a first connecting portion protruding from the edge of the main body portion toward the support seat, and a second connecting portion protruding radially inward from one end of the main body portion away from the first connecting portion, and the second connecting portion is fixed to the first bent portion.

[0006] As a further improvement of the present invention, a first sealing ring is provided between the main body and the support seat.

[0007] As a further improvement of the present invention, the end portion of the main body is axially recessed inward to form a first sealing groove for accommodating the first sealing ring.

[0008] As a further improvement of the present invention, the sleeve further includes a second bent portion extending from an end portion of the first bent portion toward the valve seat, and the second bent portion is located between the first connecting portion and the fixing portion.

[0009] As a further improvement of the present invention, the sleeve further includes a third bent portion protruding radially inward from an end of the second bent portion away from the first bent portion, and the third bent portion abuts against the fixing portion.

[0010] As a further improvement of the present invention, the second bent portion and the third bent portion are formed by flanging and riveting to be fixed to the fixing portion.

[0011] As a further improvement of the present invention, a second sealing ring is provided between the fixing portion and the first bending portion.

[0012] As a further improvement of the present invention, the fixing portion is recessed inwardly along the axial direction to form a second sealing groove for accommodating the second sealing ring.

[0013] As a further improvement of the present invention, the second connecting portion is formed by flanging and riveting to be fixed to the first bending portion.

[0014] As a further improvement of the present invention, the sleeve material is different from the material selected for the valve seat and / or support seat.

[0015] The beneficial effects of the present invention are as follows: the electric valve of the present invention is fixed to the sleeve by riveting by forming a first connecting portion and a second connecting portion on the valve seat. The connection structure is simple and the cost is lower than that of laser welding. It is no longer limited to the materials of the parts that match the sleeve, making the electric valve lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the electric valve of the utility model;

[0017] Figure 2 This is a side sectional structural diagram of the electric valve of the utility model;

[0018] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of area A in the middle. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 3 As shown, the electric valve 100 of the present invention includes a support seat 1, a sleeve 2 radially sleeved outside the support seat 1, a valve seat 3 fixed to the sleeve 2, a nut 4 arranged in the support seat 1 and fixed to the support seat 1, a valve stem, a valve core, a limit spring and other structures.

[0023] The focus of this embodiment is on the structure and connection method of the support seat 1, the sleeve 2 and the valve seat 3, so the remaining structures that are the same or similar to the existing solenoid valve are not described in detail.

[0024] The support base 1 includes a base body 11 and a fixing portion 12 radially extending outward from one end of the base body 11. The base body 11 is hollow to allow the nut 4 to pass through. In this embodiment, the support base 1 and the nut 4 are fixed to each other. Furthermore, the support base 1 and the nut 4 can be made of the same material, such as aluminum alloy or plastic, to facilitate integral molding. Of course, different materials can also be selected, such as aluminum alloy and plastic.

[0025] In this embodiment, the diameter of the fixing portion 12 is greater than the diameter of the base 11 .

[0026] The sleeve 2 includes a tube body 21, a first bent portion 22 protruding radially outward from the tube body 21, a second bent portion 23 extending from the end of the first bent portion 22 toward the valve seat 3, and a third bent portion 24 protruding radially inward from one end of the second bent portion 23 away from the first bent portion 22.

[0027] The first bending portion 22 abuts against the fixing portion 12 along the axial direction.

[0028] The second bent portion 23 is radially located outside the fixing portion 12 , and the third bent portion 24 abuts against the fixing portion 12 . That is, in the axial direction, the fixing portion 12 is located between the first bent portion 22 and the third bent portion 24 .

[0029] The first and second bent portions 22, 23 are formed by bending during the manufacture of the sleeve 2. The third bent portion 24 is formed by flanging and riveting to secure it to the fixing portion 12. Flanging and riveting are less expensive than welding because welding is not required, and the material selection is less restrictive. This means that the material selection range is wider, not limited to conventional stainless steel. For example, lighter and lower-cost materials can be selected to meet the needs of weight reduction and cost reduction.

[0030] A second sealing ring 6 is provided between the fixing portion 12 and the first bent portion 22. The fixing portion 12 is axially recessed inward to form a second sealing groove 13 for accommodating the second sealing ring 6. The second sealing ring 6 can seal the first bent portion 22 and the fixing portion 12 to prevent liquid from leaking out.

[0031] The valve seat 3 includes a main body portion 31 that abuts against the support seat 1 along the middle axial direction, a first connecting portion 32 that protrudes from the edge of the main body portion 31 toward the support seat, and a second connecting portion 33 that protrudes radially inward from one end of the first connecting portion 32 away from the main body portion 31.

[0032] The second bending portion 23 is located between the first connecting portion 32 and the fixing portion 12 .

[0033] The second connecting portion 33 is fixed to the first bending portion 22 .

[0034] The second connecting portion 33 is formed by flanging and riveting to secure it to the first bent portion 22. Similarly, because welding is not required, there are fewer restrictions on material selection. This means that the range of material options is wider, not limited to conventional stainless steel. For example, lighter, lower-cost materials can be selected to meet the needs of weight reduction and cost reduction.

[0035] A first sealing ring 5 is provided between the main body 31 and the support seat 1. The end of the main body 31 is axially recessed inward to form a first sealing groove 34 for accommodating the first sealing ring 5. The first sealing ring 5 can seal the support seat 1 and the valve seat 3 to prevent liquid from flowing out.

[0036] The sleeve 2 is made of a different material than the valve seat 3 and / or support seat 1. Specifically, in this embodiment, the sleeve 2 can be made of stainless steel, the support seat 1 can be made of a lightweight aluminum alloy or plastic, and the valve seat 3 can be made of an aluminum alloy or other free-cutting steel. The materials used are not limited to these.

[0037] The electric valve 100 of the present invention is assembled as follows: after the internal parts are installed, the sleeve 2 is assembled with the support seat 1, and the sleeve 2 is flanging and riveted to form a third bending portion 24, and at the same time fixed to the fixing portion 12; the valve seat 3 is assembled with the sleeve 2 and the support seat 1, and the edge of the valve seat 3 is flanging and riveted to form a first connecting portion 32 and a second connecting portion 33, which are fixed to the first bending portion 22, the second bending portion 23 and the third bending portion 24 of the sleeve 2 to complete the assembly.

[0038] The electric valve 100 of the present invention is fixed to the sleeve 2 by riveting by forming a first connecting portion 32 and a second connecting portion 33 on the valve seat 3, and is fixed to the support seat 1 by riveting by forming a first bending portion 22, a second bending portion 23 and a third bending portion 24 on the sleeve 2. The connection structure is simple and has lower cost than laser welding, and is no longer limited to the materials of the parts that match the sleeve 2, so that the electric valve 100 is lighter.

[0039] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An electric valve, characterized in that: The electric valve (100) includes a support seat (1), a sleeve (2) radially sleeved outside the support seat (1), and a valve seat (3) fixed to the sleeve (2); the support seat (1) includes a seat body (11), a fixing portion (12) radially protruding outward from one end of the seat body (11); the sleeve (2) includes a tube body (21), a first bent portion (22) radially protruding outward from the tube body (21), the first bent portion (22) axially abutting against the fixing portion (12); the valve seat (3) includes a main body (31) axially abutting against the support seat (1) in the middle part, a first connecting portion (32) protruding from the edge of the main body (31) toward the support seat (1), and a second connecting portion (33) radially protruding inward from one end of the first connecting portion (32) away from the main body (31), and the second connecting portion (33) is fixed to the first bent portion (22).

2. The electric valve according to claim 1, characterized in that: A first sealing ring (5) is provided between the main body (31) and the support seat (1).

3. The electric valve according to claim 2, characterized in that: The end of the main body (31) is recessed inwardly along the axial direction to form a first sealing groove (34) for accommodating the first sealing ring (5).

4. The electric valve according to claim 1, characterized in that: The sleeve (2) further comprises a second bent portion (23) extending from the end of the first bent portion (22) toward the valve seat (3), and the second bent portion (23) is located between the first connecting portion (32) and the fixing portion (12).

5. The electric valve according to claim 4, characterized in that: The sleeve (2) further comprises a third bent portion (24) radially extending inwardly from one end of the second bent portion (23) away from the first bent portion (22), and the third bent portion (24) abuts against the fixing portion (12).

6. The electric valve according to claim 5, characterized in that: The third bent portion (24) is formed by flanging and riveting to be fixed to the fixing portion (12).

7. The electric valve according to any one of claims 1 to 6, characterized in that: A second sealing ring (6) is provided between the fixing portion (12) and the first bending portion (22).

8. The electric valve according to claim 7, characterized in that: The fixing portion (12) is recessed inwardly along the axial direction to form a second sealing groove (13) for accommodating a second sealing ring (6).

9. The electric valve according to claim 1, characterized in that: The second connecting portion (33) is formed by flanging and riveting to be fixed to the first bent portion (22).

10. The electric valve according to claim 1, characterized in that: The support seat (1) is made of aluminum alloy or plastic material, and the valve seat (3) is made of aluminum alloy or free-cutting steel material.

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