Anti-jamming and anti-leakage on-off valve

Abstract

This utility model discloses an anti-jamming and anti-leakage switching valve, belonging to the field of valve equipment technology. The switching valve includes a valve body with a groove and a cover plate connected to the groove; a valve plate located within the valve body; a valve shaft connected to the valve plate, with the valve body sleeved on the outside of the valve shaft; and a sealing element sleeved on the outer circumference of the valve shaft and abutting against the valve body. The overall structure of this switching valve is simple, compact, and small. By creating a groove on the first cylinder of the valve body, multiple valve plates are fitted to the first cylinder in a matching manner. The valve plate with the diameter closest to the inner cavity of the first cylinder is selected and welded to one end of the valve shaft. This allows the valve plate to rotate freely within the inner cavity of the first cylinder, completely solving the problem of interference and jamming between the valve plate and the valve body during rotation due to manufacturing errors.

Description

Technical Field

[0001] This utility model relates to an anti-jamming and anti-leakage switching valve, belonging to the field of valve equipment technology. Background Technology

[0002] In numerous pipeline transportation and gas transmission systems, on / off valves are critical control components that play a vital role. They are mainly used to regulate and control the flow rate, velocity, and direction of gas, thereby meeting the precise requirements of different systems for gas transmission and distribution.

[0003] Traditional on / off valves typically consist of a valve body, valve plate, actuator, and sealing components. The valve plate is installed within the valve body and opens or closes via the actuator, while the sealing components ensure no gas leakage when the valve plate is closed. However, during manufacturing, the valve body and valve plate are typically fitted with a clearance, but to ensure the valve's sealing performance, this clearance is often quite small. Due to manufacturing errors, the valve plate can easily interfere with the valve body during rotation, leading to jamming and affecting its normal operation. Utility Model Content

[0004] This invention provides an anti-jamming and anti-leakage switching valve, which solves the problem in the prior art where errors in processing and manufacturing cause the valve plate to interfere with the valve body when rotating within the valve body, resulting in jamming and affecting the normal use of the valve plate.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a switch valve that is anti-jamming and anti-leakage, including...

[0007] A valve body, wherein the valve body is provided with a groove and a cover plate, and the cover plate is connected to the groove;

[0008] A valve plate, located within the valve body;

[0009] A valve shaft is connected to the valve plate, and the valve body is sleeved on the outside of the valve shaft;

[0010] A sealing element is fitted around the outer periphery of the valve shaft and abuts against the valve body.

[0011] In one embodiment of this utility model, the valve body includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are vertically connected, the valve plate is located inside the first cylinder, and the second cylinder is sleeved on the outside of the valve shaft.

[0012] In one embodiment of this utility model, the groove is located on the first cylinder and is disposed opposite to the second cylinder, and the width of the groove is greater than the diameter of the valve plate.

[0013] In one embodiment of this invention, the second cylinder is provided with a stepped hole, and the sealing element abuts against the stepped hole. This seals the second cylinder and prevents gas leakage from the valve body.

[0014] In one embodiment of this utility model, a hole is provided on one side of the second cylinder, the hole being a threaded hole. A bolt is screwed into the hole, and the bottom of the bolt abuts against the valve shaft, thereby restricting the rotation of the valve shaft.

[0015] In one embodiment of this utility model, a retaining ring is included, with its two sides abutting against the sealing element and the second cylinder, respectively. This allows for axial fixation and positioning of the valve shaft, ensuring a more secure abutment between one side of the sealing element and the step of the stepped hole, thus preventing gas leakage.

[0016] In one embodiment of this utility model, a knob is included, which is connected to the valve shaft.

[0017] In one embodiment of this utility model, the size of the cover plate is adapted to the size of the groove.

[0018] In one embodiment of this utility model, the groove is welded to the cover plate.

[0019] In one embodiment of this utility model, the sealing element is made of polytetrafluoroethylene (PTFE). It possesses excellent high-temperature resistance, corrosion resistance, and low friction, and also exhibits anti-aging properties, maintaining stable performance over a long period in harsh environments.

[0020] Beneficial effects

[0021] This utility model provides an anti-jamming and anti-leakage switching valve, comprising a valve body, valve plate, valve shaft, and other structures, with a simple, compact, and small overall structure. By creating a groove in the first cylinder of the valve body, multiple valve plates are fitted to the first cylinder through a fitting method. The valve plate closest to the inner diameter of the first cylinder is selected and welded to one end of the valve shaft. Then, a cover plate is welded to the groove, forming a closed cavity in the first cylinder. This allows the valve plate to rotate freely within the inner cavity of the first cylinder without jamming. The groove in the valve body completely solves the problem of interference and jamming between the valve plate and the valve body during rotation caused by manufacturing errors. Furthermore, the valve plate's size is close to the inner diameter of the first cylinder, better preventing gas leakage when the valve plate rotates to the closed state. A sealing element is fitted at one end of the valve shaft to prevent gas leakage from the valve body, ensuring the valve's sealing effect. Attached Figure Description

[0022] Figure 1 A perspective view of the switching valve provided by this utility model.

[0023] Figure 2 This is a perspective view of the switching valve provided by this utility model.

[0024] Figure 3 A cross-sectional view of the switching valve provided by this utility model.

[0025] In the picture:

[0026] 1. Valve body; 11. First cylinder; 12. Second cylinder; 13. Groove; 14. Cover plate; 15. Stepped hole; 2. Valve plate; 3. Valve shaft; 4. Seal; 5. Retaining ring; 6. Knob; 7. Hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1 to 3As shown, this application provides an anti-jamming and anti-leakage switching valve for controlling the flow or blocking of gas at pipeline connections or inlet / outlet ends. The switching valve of this application avoids the problem of the valve plate getting stuck in the valve body and also has a good sealing effect, ensuring that gas does not leak out. The switching valve includes a valve body 1, a valve plate 2, a valve shaft 3, a sealing element 4, and a knob 6. The valve plate 2 is circular and installed inside the valve body 1. One end of the valve plate 2 is connected to the valve shaft 3. The knob 6 is located on the side of the valve shaft 3 opposite to the valve plate 2. The valve shaft 3 passes through the valve body 1 and is connected to the knob 6. Rotating the knob 6 can drive the valve plate 2 to rotate within the valve body 1, thereby opening or closing the switching valve. The sealing element 4 is cylindrical with a through hole in the middle. It is sleeved on the outside of the valve shaft 3, located between the valve plate 2 and the knob 6, and the outer side of the sealing element 4 abuts against the valve body 1. The sealing element 4 can form a seal on the valve body 1, preventing gas in the valve body 1 from leaking out along the valve shaft 3.

[0031] In some embodiments, the valve body 1 includes a first cylinder 11 and a second cylinder 12. The first cylinder 11 is a cylinder with a through hole in the middle, and the second cylinder 12 is a cylinder with a stepped hole 15 in the middle. The first cylinder 11 and the second cylinder 12 are vertically connected and can be connected by welding. A groove 13 is formed on the first cylinder 11, located on the side opposite to the second cylinder 12. The cover plate 14 has the same shape as the groove 13, and its size can be adapted to the size of the groove 13. The width of the groove 13 is greater than the diameter of the valve plate 2, and the width direction of the groove 13 is perpendicular to the second cylinder 12, which facilitates the insertion of the valve plate 2 into the first cylinder 11. By adapting multiple valve plates 2 to the first cylinder 11, the valve plate 2 that is closest to the inner diameter of the first cylinder 11 and will not interfere with it is determined. The valve plate 2 is then welded to the valve shaft 3, and the cover plate 14 is connected to the groove 13 to form a closed cavity in the first cylinder 11. This solves the problem that the valve plate 2 interferes with the valve body 1 and gets stuck during rotation due to large processing errors during manufacturing. At the same time, it also solves the problem that when the valve plate 2 is too small, the gap between the valve plate 2 and the cavity of the first cylinder 11 is too large when the valve plate 2 is rotated to the perpendicular position to the first cylinder 11 (i.e., in the closed state), leading to gas leakage.

[0032] In some embodiments, the stepped hole 15 inside the second cylinder 12 consists of two through holes of different sizes, with the diameter of the through hole closer to the first cylinder 11 being smaller than that of the through hole closer to the knob 6. A through hole is also provided on the side of the first cylinder 11 connected to the second cylinder 12, with the central axis of the through hole coaxial with the central axis of the stepped hole 15, thus connecting the inner cavity of the first cylinder 11 to the second cylinder 12. The valve shaft 3 passes through the stepped hole 15 and the through hole on the first cylinder 11 and connects to the valve plate 2. The sealing element 4 is sleeved on the outer periphery of the valve shaft 3, with its outer side abutting against the stepped hole 15, sealing the second cylinder 12 and preventing gas leakage from the valve body 1. A retaining ring 5 is also provided between the sealing element 4 and the second cylinder 12. The retaining ring 5 is an elastic retaining ring, with both ends abutting against the sealing element 4 and the second cylinder 12 respectively, axially fixing and positioning the valve shaft 3, making the contact between one side of the sealing element 4 and the step of the stepped hole 15 more secure, and preventing gas leakage.

[0033] In some embodiments, a hole 7 is provided on one side of the second cylinder 12. The hole 7 is a threaded hole. A bolt is screwed into the hole 7, and the bottom of the bolt abuts against the valve shaft 3, which can restrict the rotation of the valve shaft 3. After the valve plate 2 is rotated to the open or closed state by the knob 6, the bolt is screwed into the hole 7, and the bottom of the bolt abuts against the valve shaft 3, so that the valve plate 2 is fixed and prevented from rotating when the valve plate 2 is impacted by a strong airflow, which would cause gas leakage.

[0034] Optionally, the valve body 1, valve plate 2, valve shaft 3, and knob 6 are made of high-temperature resistant metal. Preferably, in this embodiment, the valve body 1, valve plate 2, valve shaft 3, and knob 6 are made of SUS304, which has properties such as high-temperature resistance and corrosion resistance, and can extend the service life of the switching valve.

[0035] Optionally, the seal 4 is made of polytetrafluoroethylene, which has excellent high temperature resistance, corrosion resistance, low friction and anti-aging properties, and can maintain stable performance in harsh environments for a long time.

[0036] Alternatively, the groove 13 and the cover plate 14 can be connected by welding.

[0037] The working principle of this invention is as follows: By creating a groove 13 on one side of the first cylinder 11, multiple valve plates 2 are fitted to the first cylinder 11 in a matching manner. The valve plate 2 with the diameter closest to the inner cavity of the first cylinder 11 is selected and welded to one end of the valve shaft 3. Then, the cover plate 14 is welded to the groove 13, forming a closed cavity in the first cylinder 11. This allows the valve plate 2 to rotate freely within the inner cavity of the first cylinder 11 without jamming. Moreover, the size of the valve plate 2 is close to the inner diameter of the first cylinder, which better prevents gas leakage when the valve plate 2 is rotated to the closed state. By fitting a sealing element 4 at one end of the valve shaft 3, gas leakage from the valve body 1 is prevented, ensuring the sealing effect of the valve body.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0040] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A switch valve that prevents jamming and leakage, characterized in that, include: Valve body (1), the valve body (1) is provided with a groove (13) and a cover plate (14), the cover plate (14) is connected to the groove (13); Valve plate (2), the valve plate (2) is located inside the valve body (1); Valve shaft (3), the valve shaft (3) is connected to the valve plate (2), and the valve body (1) is sleeved on the outside of the valve shaft (3); A sealing element (4) is fitted around the outer periphery of the valve shaft (3) and abuts against the valve body (1).

2. The anti-jamming and anti-leakage switching valve according to claim 1, characterized in that, The valve body (1) includes a first cylinder (11) and a second cylinder (12). The first cylinder (11) and the second cylinder (12) are vertically connected. The valve plate (2) is located inside the first cylinder (11), and the second cylinder (12) is sleeved on the outside of the valve shaft (3).

3. The anti-jamming and anti-leakage switching valve according to claim 2, characterized in that, The groove (13) is located on the first cylinder (11) and is opposite to the second cylinder (12). The width of the groove (13) is greater than the diameter of the valve plate (2).

4. The anti-jamming and anti-leakage switching valve according to claim 2, characterized in that, The second cylinder (12) is provided with a stepped hole (15), and the sealing member (4) abuts against the stepped hole (15).

5. The anti-jamming and anti-leakage switching valve according to claim 4, characterized in that, The second cylinder (12) has a hole (7) on one side, and the hole (7) is a threaded hole.

6. The anti-jamming and anti-leakage switching valve according to claim 5, characterized in that, It includes a retaining ring (5), the two sides of which abut against the sealing element (4) and the second cylinder (12) respectively.

7. The anti-jamming and anti-leakage switching valve according to claim 1, characterized in that, Includes a knob (6), which is connected to the valve shaft (3).

8. The anti-jamming and anti-leakage switching valve according to claim 3, characterized in that, The size of the cover plate (14) is adapted to the size of the groove (13).

9. A switch valve for preventing jamming and leakage according to claim 8, characterized in that, The groove (13) is welded to the cover plate (14).

10. A switch valve for preventing jamming and leakage according to any one of claims 1-9, characterized in that, The sealing element (4) is made of polytetrafluoroethylene.

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