A pneumatic angle valve

Abstract

This utility model discloses a pneumatic angle regulating valve, relating to the field of regulating valves. It includes a valve body, a diaphragm cover mounted on top of the valve body, and a pressing and engaging mechanism for engaging a valve seat below the diaphragm cover. The pressing and engaging mechanism includes a telescopic valve rod, which is fixedly installed at the lower center of the diaphragm cover. An abutment support block is mounted on the inner surface of the valve body, and an elastic rotation mechanism for resetting a closing rotating plate is mounted on the outer surface of the abutment support block. When efficient and tight closure of the pneumatic valve is required, this pneumatic angle regulating valve directly drives the guide sleeve downwards via the telescopic valve rod, causing the end of the guide sleeve to engage with the corresponding opening of the valve seat. The movement of the guide sleeve is vertically downwards along the interior of the hollow limiting rod. This design improves the airtightness of the valve's interior, ensuring a more stable engagement and preventing leakage during operation.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically a pneumatic angle regulating valve. Background Technology

[0002] A pneumatic diaphragm angle single-seat control valve is a flow regulation and control device. The control valve is usually composed of an electric actuator or a pneumatic actuator and a valve seat. The sealing performance and regulation accuracy of the pneumatic diaphragm angle single-seat control valve are attributes that directly affect the performance of the control valve.

[0003] After long-term use, existing control valves may become clogged by impurities in the fluid due to the lack of filtration design. This makes cleaning difficult and also results in poor sealing, which can lead to liquid leakage and affect the performance of the equipment.

[0004] To overcome the above-mentioned defects, existing technology (Chinese patent publication number: CN116357797A, publication date: 2023-06-30) discloses a control valve technology field, specifically a pneumatic diaphragm angle single-seat control valve, including a valve body. A valve seat is mounted on the upper surface of the valve body, and a valve cover is fixedly connected to the upper surface of the valve seat. A valve stem is disposed within the internal cavity of the valve cover. A valve core is fixedly connected to one end of the valve stem extending downward into the internal cavity of the valve body. A guide sleeve is disposed on the outer surface of the valve core. A sealing packing is disposed between the outer surface of the guide sleeve and the inner wall of the upper opening of the valve body. A second communication port is opened on the lower surface of the valve body, and a second filter screen is fixedly connected to the inner wall of the lower opening of the second communication port. A first communication port is opened on the lower left side of the valve body, and a first filter screen is fixedly connected to the inner wall of the opening of the first communication port. The combination of these structures can improve the anti-clogging effect of the valve body, thereby enhancing its protective capability.

[0005] While the above design can solve the aforementioned problems, the valve's internal sealing design is relatively simple during use, resulting in poor internal airtightness. This can lead to unstable connections and leaks during operation. Furthermore, after prolonged use, a large amount of impurities and stains will accumulate on the valve's inner wall, making the internal fit less tight and affecting the equipment's performance. Utility Model Content

[0006] The purpose of this utility model is to provide a pneumatic angle regulating valve to solve the problems mentioned in the background art, such as the simple sealing design inside the valve during use, which results in poor internal airtightness and leakage due to unstable connection during operation. In addition, after long-term use, a large amount of impurities and stains will accumulate on the inner wall of the valve, making the internal fit less tight in later use and affecting the performance of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic angle regulating valve, comprising a valve body, a diaphragm cover installed above the valve body, a pressing and fitting mechanism for engaging a valve seat installed below the diaphragm cover, the pressing and fitting mechanism comprising a telescopic valve rod, the telescopic valve rod being fixedly installed at the lower center of the diaphragm cover, an abutting support block installed on the inner surface of the valve body, and an elastic rotation mechanism for resetting a closed rotating plate installed on the outer surface of the abutting support block.

[0008] Furthermore, the elastic rotation mechanism includes an extension and contraction spring, which is fixedly installed on the outer surface of the valve body. The upper surface of the valve body is provided with a rotation inner groove, and a closed rotation plate is rotatably installed on the inner surface of the rotation inner groove.

[0009] Furthermore, the abutment support block is fixedly installed on the inner surface of the valve body, and the rotation trajectory of the end of the closed rotating plate abuts the outer surface of the support block. The end of the extension and contraction spring is equipped with a connecting transmission line, and the end of the connecting transmission line is equipped with a cleaning sliding frame.

[0010] Furthermore, a valve cover is installed on the upper surface of the valve body, and the installation position of the valve cover corresponds to the installation position of the telescopic valve stem. The valve seat is fixedly installed inside the valve body, and the installation position of the valve seat corresponds to the outer surface of the end of the guide sleeve.

[0011] Furthermore, a hollow limiting rod is installed on the inner surface of the valve body, and the outer surface of the guide sleeve slides vertically along the inside of the hollow limiting rod. A second connecting port is opened at the lower end of the valve body, and the opening position of the second connecting port corresponds to the installation position of the valve seat.

[0012] Furthermore, the outer surface of the membrane cover is fitted with connecting bolts, and the telescopic valve stem and the membrane cover are designed as a single unit. Moreover, the outer surface of the guide sleeve and the inner surface of the hollow limit rod are in contact to form a sliding structure.

[0013] Furthermore, a stabilizing sliding frame is installed on the inner surface of the valve body, and the cleaning sliding frame slides along the inside of the stabilizing sliding frame. The closing rotating plate and the cleaning sliding frame are designed as a single unit, and a first communication port is provided on the side of the valve body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: when the pneumatic angle regulating valve needs to be closed efficiently and tightly, the guide sleeve is directly driven downward by the telescopic valve rod, so that the end of the guide sleeve is connected with the corresponding opening of the valve seat. The movement of the guide sleeve will move vertically downward along the inside of the hollow limit rod. This design improves the airtightness of the valve and makes the connection more stable and prevents leakage during operation. Furthermore, when the closed rotating plate swings back and forth to retract, it will drive the cleaning sliding frame to move synchronously. Since the cleaning sliding frame is in contact with the inner wall of the first connecting port, the through part of the valve body will be cleaned accordingly. This design prevents impurities and stains from appearing on the inner wall of the valve, resulting in a tighter internal fit in later use. It is necessary to clarify that the sliding stroke of the cleaning sliding frame is 5-10mm, the single reciprocating cycle is synchronized with the valve opening and closing frequency, and the contact pressure between it and the inner wall is recorded by high-speed camera. The elastic performance test of the extension and contraction spring 13 shows that the elastic decay rate of the spring after 10,000 reciprocating stretches is ≤5%, and the relationship between the stretching length and the restoring force is determined. After 5,000 consecutive opening and closing cycles, the wear of the cleaning sliding frame and the change rate of the spring elastic coefficient are ≤10%, proving that there is no risk of structural failure.

[0015] Furthermore, the membrane cover is fixed to the outside using multiple sets of tandem bolts, which improves the internal stability of the equipment. At the same time, the moving position of the guide sleeve corresponds to the valve seat and the second connecting port. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the valve body of this utility model; Figure 2 This is a three-dimensional structural diagram of the valve cover of this utility model; Figure 3 This is a three-dimensional structural diagram of the valve seat of this utility model; Figure 4 This is a three-dimensional structural diagram of the cascade bolt of this utility model; Figure 5 This is a three-dimensional structural diagram of the extension and contraction spring of this utility model; Figure 6 This is a three-dimensional structural diagram of the guide sleeve of this utility model.

[0017] In the diagram: 1. Valve body; 2. Valve cover; 3. Telescopic valve stem; 4. Guide sleeve; 5. Hollow limit rod; 6. Valve seat; 7. Connecting bolt; 8. First connecting port; 9. Second connecting port; 10. Diaphragm cover; 11. Rotating inner groove; 12. Abutting support block; 13. Extension and contraction spring; 14. Closing rotating plate; 15. Connecting transmission line; 16. Cleaning sliding frame; 17. Stabilizing sliding frame. Detailed Implementation

[0018] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Please refer to Figure 1 , Figure 4 and Figure 6 This utility model provides the following technical solution: a pneumatic angle regulating valve, including a valve body 1, a diaphragm cover 10 installed above the valve body 1, and a pressing and engaging mechanism for engaging a valve seat 6 installed below the diaphragm cover 10, such as... Figure 4 As shown, the pressing and fitting mechanism includes a telescopic valve stem 3, which is fixedly installed at the lower center of the diaphragm cover 10. An abutment support block 12 is installed on the inner surface of the valve body 1, and an elastic rotation mechanism for resetting the closed rotating plate 14 is installed on the outer surface of the abutment support block 12.

[0020] like Figure 1 , Figure 4 and Figure 6 The technical solution shown addresses the problem of poor internal airtightness and leakage caused by unstable connection during operation in pneumatic valves due to their simple internal sealing design. Specifically, it discloses that: an abutment support block 12 is fixedly installed on the inner surface of the valve body 1, and the rotation trajectory of the end of the closing rotating plate 14 abuts against the outer surface of the abutment support block 12; a connecting transmission line 15 is installed at the end of the extension / contraction spring 13, and a cleaning sliding frame 16 is installed at the end of the connecting transmission line 15. Figure 6 As shown, a valve cover 2 is installed on the upper surface of the valve body 1, and the installation position of the valve cover 2 corresponds to the installation position of the telescopic valve stem 3. The valve seat 6 is fixedly installed inside the valve body 1, and the installation position of the valve seat 6 corresponds to the outer surface of the end of the guide sleeve 4. A hollow limiting rod 5 is installed on the inner surface of the valve body 1, and the outer surface of the guide sleeve 4 slides vertically along the interior of the hollow limiting rod 5. A second connecting port 9 is opened at the lower end of the valve body 1, and the opening position of the second connecting port 9 corresponds to the installation position of the valve seat 6.

[0021] When a high-seal, stable closure of the valve body 1 is required, the diaphragm cover 10 on top of the valve body 1 is directly activated to initiate the conveying operation. This causes the diaphragm cover 10 to drive the guide sleeve 4, designed at its lower center, downwards. The guide sleeve 4 slides vertically downwards along the end of the valve body 1 until its end contacts the upper surface of the valve seat 6, which is fixedly installed at the corresponding position inside the valve body 1. As it continues to move downwards, as... Figure 6 As shown, the guide sleeve 4 will nest and connect the corresponding hollow positions on the outside of the valve seat 6. The downward vertical sliding of the guide sleeve 4 will proceed along the corresponding hollow limit rod 5 installed inside the valve body 1, making the correspondence between the guide sleeve 4 and the valve seat 6 more stable and airtight. At the same time, the movement of the guide sleeve 4 will also be driven downward by the diaphragm cover 10 through the telescopic valve rod 3 fixedly installed at the top. Since the installation position of the valve seat 6 corresponds to the position of the second connecting port 9 opened on the lower surface of the valve body 1, the second connecting port 9 will also be internally isolated from the internal cavity of the valve body 1 as the internal opening of the valve seat 6 is completely closed. Meanwhile, the multiple sets of series bolts 7 designed on the outer surface of the diaphragm cover 10 will make the inside of the diaphragm cover 10 more airtight and improve the use effect of the equipment.

[0022] Example 2: Figure 2 , Figure 3 and Figure 5 The technical solution shown addresses the problem that after prolonged use, a large amount of impurities and stains accumulate on the inner wall of the valve, resulting in insufficient internal sealing and affecting the equipment's performance. It discloses an elastic rotation mechanism including an extension / contraction spring 13, which is fixedly mounted on the outer surface of the valve body 1. A rotating inner groove 11 is formed on the upper surface of the valve body 1, and a closing rotating plate 14 is rotatably mounted on the inner surface of the rotating inner groove 11. An abutment support block 12 is fixedly mounted on the inner surface of the valve body 1, and the end of the closing rotating plate 14 abuts against the outer surface of the abutment support block 12. Figure 3 As shown, a connecting transmission line 15 is installed at the end of the extension and retraction spring 13, and a cleaning sliding frame 16 is installed at the end of the connecting transmission line 15. A stabilizing sliding frame 17 is installed on the inner surface of the valve body 1, and the cleaning sliding frame 16 slides along the inside of the stabilizing sliding frame 17. The closing rotating plate 14 and the cleaning sliding frame 16 are designed as a single unit, and a first connecting port 8 is opened on the side of the valve body 1.

[0023] After the guide sleeve 4 and valve seat 6 are connected, the closing rotating plate 14 will be drawn inward due to air pressure, causing its end to abut against the contact support block 12 fixedly installed inside the valve body 1. This improves the sealing effect inside the valve body 1. Simultaneously, after the equipment is used, the closing rotating plate 14 is naturally driven to expel gas outward. At this time, the closing rotating plate 14 will rotate along the rotating inner groove 11 opened on the upper surface of the valve body 1. As the closing rotating plate 14 rotates, the cleaning sliding frame 16 fixedly installed on the outer surface will be pushed forward. Figure 5 As shown, the sliding process of the cleaning sliding frame 16 simultaneously slides outward along the inside of the stabilizing sliding bracket 17 opened on the inner surface of the first connecting port 8. When the stabilizing sliding bracket 17 slides, it drives the connecting transmission line 15 fixed at the top to move synchronously, causing the connecting transmission line 15 to extend and lengthen the extension and contraction spring 13 fixed at the end downward. After the closed rotating plate 14 completes the reset work again, the extension and contraction spring 13 releases its elastic potential energy, causing the cleaning sliding frame 16 to reset again. The reciprocating sliding reset of the cleaning sliding frame 16 will continuously adhere to the inner surface of the first connecting port 8, ensuring that no impurities accumulate inside the valve body 1 after long-term operation. The cleaning structure can reduce the amount of residual impurities by ≥90% and the coverage area by ≥80%. Using a gas medium airtightness tester or a liquid medium pressure decay method, the leakage of the first connecting port 8 and the valve assembly was tested. The experimental group showed that the leakage rate was ≤0.01 after 1000 hours. MPa / min (meets the first-class sealing standard for industrial valves), the accumulation of impurities directly leads to an increase in the gap between the sealing surfaces, and the leakage rate can directly reflect the effect of cleaning on maintaining sealing performance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pneumatic angle regulating valve, comprising a valve body (1), wherein a diaphragm cover (10) is mounted on the top of the valve body (1), characterized in that: A pressing and fitting mechanism for engaging the valve seat (6) is installed below the membrane cover (10); The pressing and fitting mechanism includes a telescopic valve stem (3), and the telescopic valve stem (3) is fixedly installed at the lower center of the membrane cover (10). The inner surface of the valve body (1) is equipped with an abutting support block (12), and the outer surface of the abutting support block (12) is equipped with an elastic rotation mechanism for resetting the closed rotating plate (14).

2. The pneumatic angle regulating valve according to claim 1, characterized in that: The elastic rotation mechanism includes an extension and contraction spring (13), which is fixedly installed on the outer surface of the valve body (1). The upper surface of the valve body (1) is provided with a rotation inner groove (11), and a closed rotation plate (14) is rotatably installed on the inner surface of the rotation inner groove (11).

3. A pneumatic angle regulating valve according to claim 2, characterized in that: The abutting support block (12) is fixedly installed on the inner surface of the valve body (1), and the end rotation trajectory of the closed rotating plate (14) abuts against the outer surface of the abutting support block (12). The end of the extension and contraction spring (13) is equipped with a connecting transmission line (15), and the end of the connecting transmission line (15) is equipped with a cleaning sliding frame (16).

4. A pneumatic angle regulating valve according to claim 1, characterized in that: The valve body (1) is equipped with a valve cover (2) on its upper surface, and the installation position of the valve cover (2) corresponds to the installation position of the telescopic valve stem (3). The valve seat (6) is fixedly installed inside the valve body (1), and the installation position of the valve seat (6) corresponds to the outer surface of the end of the guide sleeve (4).

5. A pneumatic angle regulating valve according to claim 4, characterized in that: The inner surface of the valve body (1) is equipped with a hollow limiting rod (5), and the outer surface of the guide sleeve (4) slides vertically along the interior of the hollow limiting rod (5). The lower end of the valve body (1) is provided with a second connecting port (9), and the opening position of the second connecting port (9) corresponds to the installation position of the valve seat (6).

6. A pneumatic angle regulating valve according to claim 5, characterized in that: The outer surface of the membrane cover (10) is connected with a series bolt (7), and the telescopic valve stem (3) and the membrane cover (10) are designed as a single unit. The outer surface of the guide sleeve (4) and the inner surface of the hollow limit rod (5) are in contact to form a sliding structure.

7. A pneumatic angle regulating valve according to claim 3, characterized in that: The inner surface of the valve body (1) is equipped with a stabilizing sliding frame (17), and the cleaning sliding frame (16) slides along the inside of the stabilizing sliding frame (17). The closing rotating plate (14) and the cleaning sliding frame (16) are designed as a single unit, and the valve body (1) has a first connecting port (8) on its side.

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