Electrical valve interface sealing structure

Abstract

The utility model belongs to the technical field of electro-pneumatic valves, and particularly relates to an electro-pneumatic valve connector sealing structure which comprises a pipeline connector, a pipeline connector and a sealing piece, an elastic supporting ring is sleeved on the waist portion of the sealing piece, and abutting head portions at two ends of the sealing piece abut against the pipeline connector and the pipeline connector at corresponding positions respectively. The pipeline connector is connected to the pipeline connector in a threaded mode, and the pipeline connector is integrally arranged on the valve body. According to the utility model, the deformable sealing element is arranged at the pipeline connecting part on the valve, and the sealing element can be extruded in the flowing process of a medium with larger pressure in the use process, so that the contact head part is deformed, the contact surface of the contact head part and the sealing connecting part is enlarged, and the sealing performance of the contact connection is improved; the larger the pressure of a flowing medium is, the better the sealing effect is, stable use is guaranteed, seepage is not generated at a gap part, the structure is simple, and the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electric valves, in particular to a sealing structure for an electric valve interface. Background Technique

[0002] An electric valve is a device for regulating and controlling the flow rate of a pipeline, which can regulate the flow rate of cold and hot water and is widely used in fluid control systems such as refrigeration or heating systems, water treatment, and industrial processing industries. However, when the existing electric valve is used in an environment with relatively high pressure for a long time, seepage is likely to occur at the connection part of the pipeline on the valve, resulting in abnormal use. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a sealing structure for an electric valve interface, which solves the problem that seepage is likely to occur at the connection part of the pipeline on the valve during long-term operation in an environment with relatively high pressure, resulting in abnormal use.

[0005] (2) Technical Solutions

[0006] The utility model specifically adopts the following technical solutions to achieve the above objectives:

[0007] A sealing structure for an electric valve interface includes a pipeline interface, a pipeline joint, and a seal. An elastic support ring is sleeved on the waist of the seal. The contact head parts at both ends of the seal respectively contact the pipeline interface and the pipeline joint at corresponding positions, and the pipeline joint is threadedly connected to the pipeline interface. The pipeline interface is integrally provided on the valve body.

[0008] Furthermore, a groove for placing the elastic support ring is formed by the waist at the middle part of the seal recessing inward. The contact head parts are integrally formed at both ends of the groove. Both ends of the elastic support ring are bent outward integrally to form flared lip plates, and the lip plates contact the contact head parts at corresponding positions.

[0009] A lapping ring plate is integrally provided at one end of the contact head part that laps with the pipeline interface and the pipeline joint. The lapping ring plate is inserted into the medium flow channels opened on the pipeline interface and the pipeline joint.

[0010] An arc-shaped convex part is provided between the two lapping ring plates of the seal. The arc-shaped convex part is located in the medium flow channel of the seal, and a closed deformation cavity is provided inside the seal, and the deformation cavity is filled with gas.

[0011] Further, the second threaded connection section integrally provided on the pipe joint is threadedly connected to the first threaded connection section integrally provided on the pipe interface, and sealing lap bosses for mating with the abutting head are provided in the internal cavities at the connecting parts of the pipe interface and the pipe joint;

[0012] An annular sealing ring is arranged on the sealing lap boss in the internal cavities of the pipe interface and the pipe joint, and the annular sealing ring abuts against the outer side wall of the abutting head.

[0013] (III) Advantageous Effects

[0014] Compared with the prior art, the present utility model provides an electrical valve interface sealing structure, which has the following advantageous effects:

[0015] In the present utility model, a deformable seal is installed at the pipe connection part of the valve. During use, when the medium with a relatively high pressure flows, it will exert extrusion on the seal, causing the abutting head to deform, expanding the contact surface between the abutting head and the seal connection part and the tightness of the abutting connection. The greater the pressure of the flowing medium, the better the sealing effect, ensuring stable use, no seepage at the gap part, simple structure, and good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an exploded view of the pipe interface and the pipe joint parts of the present utility model;

[0018] Figure 3 is a cross-sectional view of the pipe interface and the pipe joint parts of the present utility model;

[0019] Figure 4 is a cross-sectional view of the seal of the present utility model.

[0020] In the figure: 1, valve body; 2, pipe interface; 201, first threaded connection section; 3, pipe joint; 301, second threaded connection section; 4, seal; 401, waist; 402, abutting head; 403, overlapping ring plate; 404, arc-shaped outer convex part; 5, elastic support ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment

[0023] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, an electrical valve interface sealing structure proposed by an embodiment of the present utility model includes a pipe interface 2, a pipe joint 3 and a seal 4. An elastic support ring 5 is sleeved on the waist 401 of the seal 4 to provide stable and effective support for the seal 4, ensuring that the seal 4 can be stably placed between the pipe interface 2 and the pipe joint 3 and stably and effectively sealing this part to ensure stable use. The abutting heads 402 at both ends of the seal 4 respectively abut against the pipe interface 2 and the pipe joint 3 at corresponding positions, realizing a stable sealing connection between the seal 4, the pipe interface 2 and the pipe joint 3 to ensure stable use. Moreover, the pipe joint 3 is threadedly connected to the pipe interface 2, and the pipe interface 2 is integrally provided on the valve body 1, facilitating the stable connection of the two to achieve a stable connection between the pipe and the valve;

[0024] When connecting the pipe and the valve, first place the seal 4 into the inner cavity of the first threaded connection section 201 on the pipe interface 2, and then connect the second threaded connection section 301 of the pipe joint 3 to the first threaded connection section 201. As the second threaded connection section 301 continuously screws into the first threaded connection section 201, the sealing overlap boss on the pipe joint 3 will squeeze the abutting head 402 at one end of the seal 4, causing the abutting head 402 at the other end to tightly abut against the sealing overlap boss of the pipe interface 2. At the same time, during the continuous extrusion of the abutting heads 402 at both ends, the elastic support ring 5 provides stable and effective support for the seal 4 to avoid excessive deformation and loss of effective sealing connection. Also, when in use after completion of the connection, as the medium flows through the seal 4, it will exert extrusion on the arc-shaped outer convex part 404, compressing the gas inside the seal 4 to flow towards the abutting heads 402 at both ends, causing the abutting heads 402 to deform, expanding the contact surface at the sealing connection part of the abutting heads 402 and the tightness of the abutting connection, so that the greater the pressure of the flowing medium, the better the sealing effect, ensuring stable use and no seepage at the gap part.

[0025] As Figure 2 、 Figure 3 and Figure 4As shown, in some embodiments, the waist 401 at the middle part of the seal 4 is recessed inward to form a groove for placing the elastic support ring 5. The abutting head 402 is integrally formed at both ends of the groove, facilitating the stable installation of the elastic support ring 5 onto the seal 4, enabling the two to be used in cooperation, and ensuring that the seal 4 can be stably installed at the connection part between the pipe interface 2 and the pipe joint 3, sealing the gap at the connection part between the two to achieve the effect of sealed connection. Moreover, the two ends of the elastic support ring 5 are integrally formed with outwardly bent lips, and the lips abut against the abutting heads 402 at the corresponding parts, providing stable and effective support for the seal 4 with the lips at both ends, so that the abutting heads 402 at both ends of the seal 4 can stably abut against the corresponding sealed connection positions for effective sealed connection;

[0026] One end of the abutting head 402 that overlaps with the pipe interface 2 and the pipe joint 3 is integrally provided with an overlapping ring plate 403. The overlapping ring plate 403 is inserted into the medium flow channels opened on the pipe interface 2 and the pipe joint 3, enhancing the stability of the connection between the seal 4 and the pipe interface 2 and the pipe joint 3, enabling the abutting head 402 of the seal 4 to stably abut against the sealed connection position for stable and effective sealed connection;

[0027] An arc-shaped convex part 404 is provided between the two overlapping ring plates 403 of the seal 4. The arc-shaped convex part 404 is located in the medium flow channel of the seal 4. And a closed deformation cavity is arranged inside the seal 4, and the deformation cavity is filled with gas. The filled gas can be air or common inert gas, making the internal and external air pressures of the seal 4 balanced and enabling stable use. The arc-shaped convex part 404 arranged in the medium flow channel of the seal 4 will make the inner diameter of the middle position of the channel smaller. When the medium flows through this position, the pressure becomes larger and the flow rate becomes faster, exerting a corresponding pressure on the arc-shaped convex part 404, squeezing the seal 4 to deform. Under the restriction of the elastic support ring 5, the gas in the inner cavity of the seal 4 will flow towards both ends, causing the corresponding deformation of the abutting heads 402 at both ends, expanding the contact surface and the tightness of the abutment, further enhancing the sealing performance. The greater the pressure exerted by the flowing medium on the seal 4, the better the sealing performance of the seal 4.

[0028] As Figure 1 and Figure 3As shown, in some embodiments, the second threaded connection section 301 integrally provided on the pipe joint 3 is threadedly connected to the first threaded connection section 201 integrally provided on the pipe interface 2, facilitating the stable connection of the two together, realizing the quick and effective connection between the valve and the pipe. Moreover, sealing lap bosses for mating with the contact heads 402 are provided in the internal cavities at the connecting parts of the pipe interface 2 and the pipe joint 3, facilitating the stable contact of both ends of the seal 4 with the pipe interface 2 and the pipe joint 3 at the corresponding positions, realizing stable and effective sealed connection and ensuring stable use;

[0029] An annular sealing ring is arranged on the sealing lap boss in the internal cavity of the pipe interface 2 and the pipe joint 3. The annular sealing ring abuts against the outer side wall of the contact head 402, improving the sealing connection performance at the lap contact positions between the contact head 402 at the end of the seal 4 and the pipe interface 2 and the pipe joint 3, and ensuring stable and effective sealed connection.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electrical valve interface sealing structure, comprising a pipeline interface (2), a pipeline joint (3) and a sealing member (4), characterized in that: The waist (401) of the sealing member (4) is sleeved with an elastic support ring (5), and the abutting heads (402) at both ends of the sealing member (4) respectively abut against the pipe interface (2) and the pipe joint (3) at corresponding positions, and the pipe joint (3) is threadedly connected to the pipe interface (2), and the pipe interface (2) is integrally arranged on the valve body (1).

2. The electrical valve interface sealing structure according to claim 1, characterized in that: The waist (401) at the middle part of the sealing member (4) is recessed inwardly to form a groove for accommodating the elastic support ring (5); the abutment head (402) is integrally formed and arranged at both ends of the groove; and both ends of the elastic support ring (5) are bent outwardly and integrally formed to form a trumpet-shaped lip plate, and the lip plate abuts against the abutment head (402) at the corresponding position.

3. The electrical valve interface sealing structure according to claim 2, characterized in that: An overlapping ring plate (403) is integrally provided at one end of the abutting head (402) overlapping the pipeline interface (2) and the pipeline joint (3); the overlapping ring plate (403) is inserted into a medium flow channel provided on the pipeline interface (2) and the pipeline joint (3).

4. The electrical valve interface sealing structure according to claim 2, characterized in that: An arc-shaped outer convex portion (404) is provided between the two overlapping ring plates (403) of the seal (4), the arc-shaped outer convex portion (404) is located in the medium flow channel of the seal (4), and a closed deformation cavity is provided inside the seal (4), and the deformation cavity is filled with gas.

5. The electrical valve interface sealing structure according to claim 1, characterized in that: The second threaded connection section (301) integrally provided on the pipe joint (3) is threadedly connected to the first threaded connection section (201) integrally provided on the pipe interface (2), and a sealing overlap boss that cooperates with the abutment head (402) is provided in the internal cavity at the mutually connected portion of the pipe interface (2) and the pipe joint (3).

6. The electrical valve interface sealing structure according to claim 5, characterized in that: An annular sealing ring is arranged on the sealing overlap boss in the internal cavity of the pipeline interface (2) and the pipeline joint (3), and the annular sealing ring abuts against the outer side wall of the abutting head (402).

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