Novel sealing valve element and reversing valve

Abstract

The utility model discloses a novel sealing valve element and a reversing valve, and belongs to the technical field of fluid distribution. Comprising a flow channel which extends to the annular groove from the conical sealing face. The runner comprises a runner A, a runner B and a runner C; the runner B is located in the valve body, one end of the runner A is located in the annular groove, and the other end of the runner A penetrates to the runner B; one end of the runner C is positioned on the conical sealing surface, and the other end of the runner C penetrates through the runner B; the sealing performance of the valve element can be enhanced, and the service life of the reversing valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid distribution, in particular to a novel sealing valve core and a reversing valve. Background Art

[0002] The reversing valve can realize the reversing distribution of fluid. It is mainly used for the distribution of fluid and is widely used in the food, chemical and other industries.

[0003] The reversing valve changes the direction of fluid flow through the relative rotation between the valve body and valve core. To achieve a seal between the valve body and valve core, the valve body and valve core are interference-fitted and locked with a locking cap. The structure of the valve core determines the performance of the reversing valve. A good valve core structure can provide a better sealing performance and longer sealing life for the reversing valve. Utility Model Content

[0004] The utility model provides a novel sealing valve and a reversing valve for solving technical problems, so as to enhance the sealing performance of the valve core and prolong the service life of the reversing valve.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A new type of sealing valve core, which is provided with an annular groove and a conical sealing surface; it also includes a flow channel, which extends from the conical sealing surface to the annular groove; the flow channel includes flow channel A, flow channel B and flow channel C; the flow channel B is located inside the valve body, one end of flow channel A is located in the annular groove, and the other end passes through to flow channel B; one end of flow channel C is located on the conical sealing surface, and the other end passes through to flow channel B.

[0007] Furthermore, the flow channel B is located on the central axis of the valve core, and the flow channel C is connected to the end of the flow channel B.

[0008] Furthermore, the flow channel B extends from the end of the flow channel C to the motor shaft hole; a sealing ball is provided inside the flow channel B, and the sealing ball and the flow channel B have an interference fit, so that the flow channel A, part of the flow channel B and the flow channel C form a U-shaped cavity.

[0009] A novel reversing valve comprises a valve body and also the above-mentioned novel sealing valve core; the valve core is located in the valve body, the two are interference-fitted and their central axes coincide.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] 1. The valve core parts have better structural strength, are not easily deformed, have better sealing performance and longer service life.

[0012] 2. Simple processing, effectively reducing costs BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the valve core structure of an embodiment of the utility model;

[0014] Figure 2 This is a cross-sectional view of the valve core of an embodiment of the present utility model;

[0015] Figure 3 This is an exploded structural diagram of a reversing valve according to an embodiment of the present utility model;

[0016] Figure 4 This is a cross-sectional view of a reversing valve according to an embodiment of the present utility model.

[0017] Figure 5 This is a vertical cross-sectional view of the reversing valve according to an embodiment of the present utility model.

[0018] In the figure: 1. Annular groove, 2. Conical sealing surface, 4. Flow channel A, 5. Flow channel C, 6. Flow channel B, 7. Sealing ball, 8. Motor shaft hole, a. Valve body, b. Valve core, c. Locking cover. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 5 A novel reversing valve comprises a valve body and a valve core. The valve core is positioned within the valve body, with the valve core and the valve body having an interference fit and their central axes coinciding. A conical surface on the valve core engages with the interior of the valve body to achieve a seal, with the locking force provided by a locking cap.

[0021] The output end of the motor is connected to the shaft hole of the motor to realize the rotation of the valve core.

[0022] The flow channel extends from the conical sealing surface to the annular groove; the flow channel includes flow channel A, flow channel B and flow channel C; the flow channel B is located inside the valve body, one end of flow channel A is located in the annular groove, and the other end passes through to flow channel B; one end of flow channel C is located on the conical sealing surface, and the other end passes through to flow channel B.

[0023] The flow channel B is located on the central axis of the valve core, and the flow channel C is connected to the end of the flow channel B.

[0024] The flow channel B extends from the end of the flow channel C to the motor shaft hole. A sealing ball is provided inside the flow channel B. The sealing ball has an interference fit with the flow channel B, so that the flow channel A, part of the flow channel B and the flow channel C form a U-shaped cavity. The sealing ball seals the U-shaped cavity.

[0025] A sealing ball is installed in the valve core with interference fit to seal channel B. This avoids the processing difficulties and costs associated with oblique drilling and provides a more stable structure. However, due to the low hardness of PTFE or other sealing materials, if there are structural weaknesses, the valve core may deform during interference fit, resulting in seal failure or a shortened seal life.

[0026] The valve core has an annular groove with a hole 4, which allows the valve core to connect with the valve body S port (the liquid port of the syringe of the injection pump) at any angle. The S port and other liquid holes are no longer on the same plane.

[0027] When the valve core rotates a certain angle, port S and liquid port I, port S and liquid port II, and port S and liquid port III can be connected respectively.

[0028] The valve core is installed in the valve body. There are conical surfaces between the valve core and the valve body for matching sealing. The locking cap has external threads and internal threads in the valve body. The locking cap is installed on the valve body and forms a seal by squeezing the valve core and the valve body.

[0029] The present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A new type of sealing valve core, which is provided with an annular groove and a conical sealing surface; characterized in that: It also includes a flow channel, which extends from the conical sealing surface to the annular groove; the flow channel includes flow channel A, flow channel B and flow channel C; the flow channel B is located inside the valve body, one end of the flow channel A is located in the annular groove, and the other end passes through to the flow channel B; one end of the flow channel C is located on the conical sealing surface, and the other end passes through to the flow channel B.

2. A new sealing valve core according to claim 1, characterized in that: The flow channel B is located on the central axis of the valve core, and the flow channel C is connected to the end of the flow channel B.

3. A new sealing valve core according to claim 2, characterized in that: The flow channel B extends from the end of the flow channel C to the shaft hole of the motor; a sealing ball is provided inside the flow channel B, and the sealing ball and the flow channel B have an interference fit, so that the flow channel A, part of the flow channel B and the flow channel C form a U-shaped cavity.

4. A new reversing valve, comprising a valve body; characterized in that: It also includes a new type of sealing valve core according to any one of claims 1 to 3; the valve core is located in the valve body, the two are interference fit and the central axes coincide.

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