A new bellows stop valve

Abstract

A new type of corrugated pipe stop valve, including valve body and valve rod, the corrugated seat, valve body and valve cover are provided with sealing ring, the valve body and valve cover are also provided with sealing element, the sealing ring cross section is side Y type structure setting, the sealing ring includes first sealing part, second sealing part and third sealing part, the first sealing part is arranged between the valve cover and the corrugated seat, the second sealing part is arranged between the valve body and the corrugated seat, the third sealing part is arranged between the valve body and the valve cover, the sealing ring is shrink fit with the valve body, the valve cover and the corrugated pipe, the sealing element is T type structure setting, one end of the sealing element extends into the valve body and the valve cover for sealing. The design effectively improves the sealing performance between the valve body, the valve cover and the corrugated pipe by setting the sealing ring and the sealing element, prevents medium leakage, ensures the stability and reliability of the valve.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically to a novel bellows gate valve. Background Technology

[0002] Valves are one of the most common products in industrial production. They are mainly used to cut off and allow the flow of media. They are a very important part of pipeline transportation. Their main principle is to form a sealed space between the valve body and the valve cover, and allow flow through the channels at both ends. The valve stem controls this space to open and close the valve.

[0003] However, in existing gate valves, gaps still exist between connecting parts, and ordinary seals... This results in poor sealing performance, easy leakage of the medium, and high friction between the valve stem and valve cover, which can easily lead to wear over time, affecting the valve's sealing performance and service life. Summary of the Invention

[0004] In view of this, the present invention provides a stamping device for flanges.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel bellows-type gate valve includes a valve body and a valve stem. The valve body has an inlet chamber and an outlet chamber. A connecting hole is formed on the side wall of the inlet chamber, connecting the inlet chamber and the outlet chamber to form a communication channel. A valve cover is provided above the valve body, and a valve hole is provided on the valve cover. One end of the valve stem passes through the valve hole and extends into the valve body for connection. A valve disc is provided at the end of the valve stem near the valve body. The valve stem drives the valve disc to move along its height within the valve body. A bellows is also provided between the valve disc and the valve cover. A bellows seat is provided on the side of the bellows near the valve cover, and the bellows seat is sealed to the bellows. The other end of the bellows is sealed to the valve disc. A sealing ring is provided between the bellows seat, valve body, and valve cover. A sealing element is also provided between the valve body and valve cover. The sealing ring has a Y-shaped cross-section and includes a first sealing part, a second sealing part, and a third sealing part. The first sealing part is located between the valve cover and the bellows seat, the second sealing part is located between the valve body and the bellows seat, and the third sealing part is located between the valve body and the valve cover. The sealing ring is interference-fitted with the valve body, valve cover, and bellows. The sealing element has a T-shaped structure, and one end of the sealing element extends into the space between the valve body and the valve cover for sealing.

[0006] Preferably, the valve cover is provided with a first annular sealing groove at the position corresponding to the first sealing part, the first sealing part extends into the first sealing ring groove and connects to the valve body, the first sealing part seals the connection between the valve cover and the bellows seat, and the valve body is provided with a second sealing ring groove at the position corresponding to the second sealing part, the second sealing part extends into the second sealing ring groove and seals the connection between the bellows seat and the valve body.

[0007] Preferably, the second sealing part and the first sealing part are arranged symmetrically.

[0008] Preferably, the third sealing part is disposed between the valve body and the valve cover, and the third sealing part includes an annular connecting end disposed on the side of the sealing ring away from the valve stem and a sealing end disposed near the first sealing part and the second sealing part.

[0009] Preferably, the sealing element includes a limiting portion disposed on the outside of the valve body and the valve cover, and a connecting portion disposed between the valve body and the valve cover, the connecting portion including a connecting portion body and a retaining end disposed on the outside of the connecting portion body.

[0010] Preferably, the valve cover and valve body are provided with annular grooves at the positions corresponding to the clips and ends, and the clips and ends extend into the annular grooves for sealing connection.

[0011] Preferably, the valve disc includes a sealing part and a connecting part. One end of the sealing part extends into the connecting hole to separate the feed chamber and the discharge chamber. The connecting part is located on the side of the sealing end near the valve stem. The connecting part includes a connecting groove formed on the valve disc. A thread is provided in the connecting groove. One end of the valve stem extends into the connecting groove and connects with the sealing part.

[0012] Preferably, the valve cover is provided with a grease inlet at the end away from the valve body, through which lubricating medium is introduced between the valve cover and the valve stem.

[0013] The beneficial effects of this utility model are as follows: by setting a sealing ring and sealing elements, this design effectively improves the sealing performance between the valve body, valve cover and bellows, prevents media leakage, and ensures the stability and reliability of the valve. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 Appendix of this utility model Figure 1 Enlarged view of point A in the middle; Appendix Figure 3 Appendix of this utility model Figure 1 Enlarged view of point B in the middle.

[0016] Figure label: 1. Valve body; 2. Valve stem; 3. Feed chamber; 4. Discharge chamber; 5. Connecting hole; 6. Valve cover; 7. Valve hole; 8. Valve disc; 9. Bellows; 10. Bellows seat; 11. Sealing ring; 12. Sealing element; 13. First sealing part; 14. Second sealing part; 15. Third sealing part; 16. First annular sealing groove; 17. Second sealing ring groove; 18. Annular connecting end; 19. Sealing end; 20. Limiting part; 21. Connecting part; 22. Connecting part body; 23. Locking end; 24. Annular locking groove; 25. Sealing part; 26. Connecting part; 27. Connecting groove; 28. With grease inlet. Detailed Implementation

[0017] 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.

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] This utility model provides the following technical solution: As attached Figure 1-3 As shown in the accompanying drawings, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] This utility model provides the following technical solution: As attached Figure 1-3As shown, this utility model discloses a novel bellows gate valve, including a valve body 1 and a valve stem 2. The valve body 1 has an inlet chamber 3 and an outlet chamber 4. A connecting hole 5 is formed on the side wall of the inlet chamber 3, connecting the inlet chamber 3 and the outlet chamber 4 to form a connecting channel. A valve cover 6 is provided above the valve body 1, and a valve hole 7 is provided on the valve cover 6. One end of the valve stem 2 passes through the valve hole 7 and extends into the valve body 1 for connection. A valve disc 8 is provided at the end of the valve stem 2 near the valve body 1. The valve stem 2 drives the valve disc 8 to move along its height direction within the valve body 1. A bellows 9 is also provided between the valve disc 8 and the valve cover 6. A bellows seat 10 is provided on the side of the bellows 9 near the valve cover 6. The bellows seat 10 is sealed to the bellows 9. The other end of the pipe 9 is sealed to the valve disc 8. A sealing ring 11 is provided between the bellows seat 10, the valve body 1, and the valve cover 6. A sealing element 12 is also provided between the valve body 1 and the valve cover 6. The sealing ring 11 has a Y-shaped cross-section and includes a first sealing part 13, a second sealing part 14, and a third sealing part 15. The first sealing part 13 is located between the valve cover 6 and the bellows seat 10, the second sealing part 14 is located between the valve body 1 and the bellows seat 10, and the third sealing part 15 is located between the valve body 1 and the valve cover 6. The sealing ring 11 is press-fitted with the valve body 1, the valve cover 6, and the bellows 9. The sealing element 12 has a T-shaped structure, and one end of the sealing element 12 extends into the space between the valve body 1 and the valve cover 6 for sealing. In this embodiment, the sealing ring 11 and the sealing element 12 enhance the sealing performance between the valve body 1 and the valve cover 6, prevent media leakage, and improve the performance and safety of the bellows 9 gate valve. Meanwhile, the Y-shaped sealing ring 11 and the T-shaped sealing element 12 can better adapt to the small gap between the valve body 1 and the valve cover 6, ensuring a more reliable sealing effect. Furthermore, this design effectively prevents external impurities from entering between the valve body 1 and the valve cover 6, further extending the service life of the bellows 9 gate valve. The bellows 9 prevents corrosion and wear on the valve stem 2 caused by contact between the medium and the valve stem 2. The bellows seat 10 and the sealing connection between the valve disc 8 and the bellows 9 further enhance the sealing performance of the bellows 9 gate valve. In actual use, the bellows 9 can extend and retract with the up and down movement of the valve stem 2, always maintaining a sealed state with the valve stem 2, thereby effectively preventing medium leakage. At the same time, the bellows seat 10 makes the installation and disassembly of the bellows 9 more convenient, facilitating maintenance and replacement. In addition, the bellows gate valve in this embodiment also has advantages such as simple structure, convenient operation, and good performance. By rationally designing the bellows 9, bellows seat 10, sealing ring 11, and sealing element 12, the gate valve achieves better sealing performance and a longer service life. Simultaneously, the design of the bellows 9 effectively prevents corrosion and wear on the valve stem 2 by the medium, improving the gate valve's performance and safety.In this embodiment, the first sealing part 13, the second sealing part 14, and the third sealing part 15 respectively enhance the sealing performance between the valve cover 6 and the bellows seat 10, the valve body 1 and the bellows seat 10, and the valve body 1 and the valve cover 6. This design ensures that under high pressure or high temperature operating environments, the sealing ring 11 can fit tightly against the corresponding components, preventing the medium from leaking out from these tiny gaps. Simultaneously, the side Y-shaped structure of the first sealing part 13, the second sealing part 14, and the third sealing part 15 allows the sealing ring 11 to better adapt to different shapes and sizes between the valve body 1 and the valve cover 6, further improving the sealing effect. Therefore, this novel bellows 9 gate valve exhibits superior sealing performance and a longer service life in practical applications.

[0022] Furthermore, the valve cover 6 is provided with a first annular sealing groove 16 corresponding to the position of the first sealing part 13. The first sealing part 13 extends into the first sealing ring groove 16 and connects to the valve body 1. The first sealing part 13 seals the connection between the valve cover 6 and the bellows seat 9. The valve body 1 is provided with a second sealing ring groove 17 corresponding to the position of the second sealing part 14. The second sealing part 14 extends into the second sealing ring groove 17 and seals the connection between the bellows seat 9 and the valve body 1. In this embodiment, the arrangement of the first annular sealing groove 16 and the second sealing ring groove 17 can further ensure a tight fit between the sealing ring 11 and the valve body 1 and the valve cover 6, improving the sealing effect. At the same time, this design also makes it easier to install and remove the sealing ring 11, facilitating maintenance and replacement of the sealing ring 11. In addition, the shape and size of the first annular sealing groove 16 and the second sealing ring groove 17 can also be customized according to actual needs to adapt to the sealing requirements of different working environments.

[0023] Furthermore, the second sealing part 14 and the first sealing part 13 are arranged symmetrically. In this embodiment, the symmetrical arrangement of the second sealing part 14 and the first sealing part 13 not only makes the entire sealing structure more balanced and stable, but also helps to maintain the integrity of the sealing ring during installation and disassembly, avoiding damage caused by uneven stress. This design also simplifies the installation process, reduces the skill requirements for operators, and improves work efficiency. In addition, the symmetrical sealing ring can more effectively disperse stress when subjected to pressure, enhancing the durability and reliability of the sealing ring. Therefore, this new type of bellows gate valve can provide more stable sealing performance in practical applications, extend the service life of the valve, and reduce maintenance costs.

[0024] Furthermore, the third sealing part 15 is disposed between the valve body 1 and the valve cover 6. The third sealing part 15 includes an annular connecting end 18 disposed on the side away from the valve stem and a sealing end 19 disposed near the first sealing part 13 and the second sealing part 14. In this embodiment, the arrangement of the annular connecting end 18 and the sealing end 19 allows the third sealing part 15 to better adapt to the gap between the valve body 1 and the valve cover 6, improving the sealing effect. The annular connecting end 18 enhances the connection strength between the sealing ring 11 and the valve body 1 and the valve cover 6, ensuring that the sealing ring 11 will not fall off or be damaged under high pressure or high temperature environments. The sealing end 19 fits tightly between the valve body 1 and the valve cover 6, effectively preventing media leakage. This design not only improves the sealing performance of the bellows gate valve but also enhances its stability and reliability. An annular groove is provided on the valve body and valve cover at the position corresponding to the annular connecting end, and the annular connecting end extends into the annular groove to connect with the valve body and valve cover, thereby further improving the sealing effect.

[0025] Furthermore, the sealing element 12 includes a limiting portion 20 disposed on the outer side of the valve body 1 and the valve cover 6, and a connecting portion 21 disposed between the valve body 1 and the valve cover 6. The connecting portion 21 includes a connecting body 22 and a locking end 23 disposed on the outer side of the connecting body 22. In this embodiment, the limiting portion 20 ensures the correct position of the sealing element 12 between the valve body 1 and the valve cover 6, preventing displacement or detachment during use. Simultaneously, the limiting portion 20 prevents external dust and impurities from entering the valve body and valve cover, thus reducing the equipment's service life, and also enhances the stability and reliability of the sealing element 12. The connecting portion 21 allows the sealing element 12 to fit tightly between the valve body 1 and the valve cover 6, forming an effective seal. The connecting body 22, as the main body of the sealing element 12, plays a primary guiding and positioning role, while the locking end 23 further enhances the connection strength between the connecting portion 21 and the valve body 1 and the valve cover 6, ensuring that the sealing element 12 will not loosen or be damaged during use. This design not only improves the sealing performance of the bellows gate valve, but also enhances the stability and reliability of its overall structure.

[0026] Furthermore, annular grooves 24 are provided on both the valve cover 6 and the valve body 1 at positions corresponding to the clips and ends 23, and the clips and ends 23 extend into the annular grooves 24 for sealing connection. In this embodiment, the annular grooves 24 not only provide accurate positioning for the clips and ends 23, but also further enhance the connection stability and sealing effect between the seal 12 and the valve body 1 and valve cover 6. When the clips and ends 23 extend into the annular grooves 24, it ensures that the seal 12 is firmly installed between the valve body 1 and the valve cover 6, and is not prone to displacement or detachment. This design not only improves the overall structural strength of the bellows gate valve, but also enables it to maintain stable sealing performance in various harsh working environments. In addition, the shape and size of the annular grooves 24 can also be customized according to actual needs to adapt to the sealing requirements of different working environments, further enhancing the adaptability and sealing performance of the bellows gate valve.

[0027] Furthermore, the valve disc 8 includes a sealing part 25 and a connecting part 26. One end of the sealing part 25 extends into the connecting hole 5 to isolate the feed chamber 3 and the discharge chamber 4. The connecting part 26 is located on the side of the sealing end near the valve stem 2. The connecting part 26 includes a connecting groove 27 formed on the valve disc 8, and a thread is provided in the connecting groove 27. One end of the valve stem 2 extends into the connecting groove 27 and connects with the sealing part 25. In this embodiment, the function of the valve disc 8 is to isolate the feed chamber 3 and the discharge chamber 4 and control the flow of the medium. The sealing part 25 is made of high-temperature resistant and corrosion-resistant materials to ensure that it can operate stably for a long time in harsh working environments. At the same time, the shape and size of the sealing part 25 are carefully designed to ensure a tight fit between it and the connecting hole 5 to prevent medium leakage. The connecting part 26 is located on the side of the sealing part 25 near the valve stem 2 and is used to connect the valve disc 8 to the valve stem 2. The connecting groove 27 and threads on the connecting part 26 allow the valve stem 2 to extend stably and connect with the sealing part 25, ensuring that the valve disc 8 can accurately open or close as the valve stem 2 moves up and down. This design not only improves the sealing performance of the bellows 9 gate valve but also makes the replacement and maintenance of the valve disc 8 more convenient. In practical applications, operators can control the opening degree of the valve disc 8 by adjusting the position of the valve stem 2, thereby achieving precise control of the medium flow rate. Simultaneously, the high temperature and corrosion resistance of the valve disc 8 allows the bellows 9 gate valve to adapt to the needs of different media and working environments, improving its applicability and service life.

[0028] Furthermore, the end of the valve cover 6 furthest from the valve body 1 is provided with a grease inlet 28. The valve cover 6 uses this grease inlet 28 to introduce lubricating medium between the valve cover 6 and the valve stem 2. In this embodiment, the grease inlet 28 facilitates the operator in injecting lubricating medium between the valve cover 6 and the valve stem 2, reducing friction and wear on the valve stem 2 during operation and extending the service life of the bellows 9 shut-off valve. Simultaneously, the grease inlet 28 makes adding lubricating medium more convenient and faster, reducing operational difficulty and maintenance costs.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel bellows-sealed gate valve, comprising a valve body and a valve stem, wherein the valve body has an inlet chamber and an outlet chamber, a connecting hole is formed on the side wall of the inlet chamber, the connecting hole connecting the inlet chamber and the outlet chamber to form a communicating channel, a valve cover is provided on the top of the valve body, a valve hole is provided on the valve cover, one end of the valve stem passes through the valve hole and extends into the valve body for connection, a valve disc is provided at the end of the valve stem near the valve body, the valve stem drives the valve disc to move along its height direction within the valve body, a bellows is also provided between the valve disc and the valve cover, a bellows seat is provided on the side of the bellows near the valve cover, the bellows seat is sealed to the bellows, and the other end of the bellows is sealed to the valve disc, characterized in that: A sealing ring is provided between the bellows seat, valve body, and valve cover. A sealing element is also provided between the valve body and valve cover. The sealing ring has a Y-shaped cross-section and includes a first sealing part, a second sealing part, and a third sealing part. The first sealing part is located between the valve cover and the bellows seat, the second sealing part is located between the valve body and the bellows seat, and the third sealing part is located between the valve body and the valve cover. The sealing ring is interference-fitted with the valve body, valve cover, and bellows. The sealing element has a T-shaped structure, and one end of the sealing element extends into the space between the valve body and the valve cover to provide a seal.

2. The novel bellows stop valve according to claim 1, characterized in that: The valve cover is provided with a first annular sealing groove at the position corresponding to the first sealing part. The first sealing part extends into the first sealing ring groove and connects to the valve body. The first sealing part seals the connection between the valve cover and the bellows seat. The valve body is provided with a second sealing ring groove at the position corresponding to the second sealing part. The second sealing part extends into the second sealing ring groove and seals the connection between the bellows seat and the valve body.

3. A novel bellows shut-off valve according to claim 2, characterized in that: The second sealing part is arranged symmetrically with the first sealing part.

4. A novel bellows shut-off valve according to claim 1, characterized in that: The third sealing part is disposed between the valve body and the valve cover. The third sealing part includes an annular connecting end disposed on the side of the sealing ring away from the valve stem and a sealing end disposed near the first sealing part and the second sealing part.

5. A novel bellows shut-off valve according to claim 1, characterized in that: The sealing element includes a limiting part disposed on the outside of the valve body and the valve cover, and a connecting part disposed between the valve body and the valve cover. The connecting part includes a connecting part body and a clip and end disposed on the outside of the connecting part body.

6. A novel bellows shut-off valve according to claim 5, characterized in that: Both the valve cover and the valve body are provided with annular grooves corresponding to the positions of the clips and ends, and the clips and ends extend into the annular grooves for sealing connection.

7. A novel bellows shut-off valve according to claim 1, characterized in that: The valve disc includes a sealing part and a connecting part. One end of the sealing part extends into the connecting hole to separate the feed chamber and the discharge chamber. The connecting part is located on the side of the sealing end near the valve stem. The connecting part includes a connecting groove formed on the valve disc. A thread is provided in the connecting groove. One end of the valve stem extends into the connecting groove and connects with the sealing part.

8. A novel bellows shut-off valve according to claim 2, characterized in that: The valve cover is also provided with a grease inlet at the end away from the valve body, through which lubricating medium is introduced between the valve cover and the valve stem.

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