Pneumatic regulating valve for producing persulfate

Abstract

This invention relates to the field of valve technology, specifically to a pneumatic regulating valve for persulfate production, comprising a fixed part, a flexible hose part, and an adjusting part. The flexible hose part is located within an outer tube and includes an elastic hose and two sets of tensioning groups. The two sets of tensioning groups are arranged in a mirror image with a gap between them. The elastic hose corresponding to the gap is a closing section with multiple clamping areas. An outer ring is detachably fixed to the elastic hose, and the tensioning groups stretch the elastic hose. The two sets of tensioning groups are controlled to align any clamping area with the adjusting group. If persulfate passes through the elastic hose when the adjusting part closes, the adjusting part opens and the tensioning groups are controlled to move to align with other clamping areas before closing again. Through the cooperation of the elastic hose and the two sets of tensioning groups, persulfate is unlikely to crystallize or scale on the inner surface of the elastic hose. The elastic hose has no internal mechanical structure, ensuring a seamless connection. The cooperation of multiple clamping areas, tensioning groups, and the adjusting part ensures proper closure.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and specifically to a pneumatic regulating valve for persulfate production. Background Technology

[0002] Persulfates (including ammonium persulfate, sodium persulfate, potassium persulfate, etc.) are important strong oxidants in the industrial field and are widely used in polymer polymerization, textile bleaching, metal surface treatment, water treatment and other scenarios.

[0003] Valves are crucial accessories for controlling the flow of media in chemical pipelines. Since persulfate is transported using pumps, pipelines, and valves, the rigid connections in current technology make the long-term vibrations generated by the pumps and persulfate solution within the pipelines prone to valve malfunction. Furthermore, persulfate solution easily crystallizes, and under vibration, much of the solution seeps into the valve's inner surface and between its components, leading to scaling, difficulty in complete valve closure, or reduced flow. This necessitates periodic shutdowns for cleaning, requiring manual maintenance after a certain period of use. However, operators must be specially trained, resulting in high costs and production disruptions. Therefore, a pneumatic control valve for persulfate production is needed that can reduce the impact of vibration and crystallization. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pneumatic regulating valve for persulfate production that can reduce the impact of vibration and crystallization.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A pneumatic regulating valve for persulfate production includes: a fixed part, a flexible part, and an regulating part; The fixing part includes a base and a rigid outer tube connected to the base. The base is installed in a vibration-free location. The outer tube is a cylindrical structure with open ends. Each of the open ends has an inwardly extending force-bearing block. The hose section is located inside the outer tube. The hose section includes an elastic hose and two sets of tensioning groups. The tensioning group includes an outer ring and two first cylinders. The elastic hose is coaxially arranged with the outer tube body, and the two sets of tensioning groups are mirror images of each other with a gap between them; the elastic hose corresponding to the gap is a closing section, and the closing section is divided into multiple clamping areas; the outer periphery of the elastic hose has multiple annular connectors arranged along the length direction of the elastic hose, and the outer ring is detachably fixed to the annular connectors and periodically replaced with different annular connectors; the included angle of the two first cylinders of the tensioning group is 180° and both are parallel to the length direction of the elastic hose; one end of the first cylinder is connected to the outer ring, and the other end is fixed to the force-bearing block; The adjustment unit includes two sets of adjustment groups arranged vertically. Each adjustment group includes a second cylinder and a clamping block. The second cylinder is connected to the inner wall of the outer tube corresponding to the closing section, and the clamping block is connected to the end of the second cylinder. The side of the clamping block facing the elastic hose is horizontal and the edge is rounded. When the pneumatic regulating valve used in persulfate production adjusts the flow rate, it controls the movement of the second cylinder, thereby controlling the distance between the two clamping blocks. When the two sets of adjustment groups are not closed, the first cylinders of the two sets of tensioning groups are periodically moved in opposite directions to stretch and compress the elastic hose. The first cylinder of the two sets of tensioning groups is controlled to align any clamping area with the clamping block; if persulfate passes through the elastic hose when the two sets of adjustment groups are closed, the two sets of adjustment groups are separated and the movement of the two sets of tensioning groups is controlled to align with other clamping areas, and then the two sets of adjustment groups are closed again until no persulfate passes through the elastic hose.

[0006] Preferably, the flexible hose is provided with connecting flanges at both ends.

[0007] Preferably, the outer tube is the same length as the elastic hose, and the force-bearing block has a ring structure; An elastic seal is also provided between the load-bearing block and the connecting flange.

[0008] Preferably, the force-bearing block has four or more, and an even number of, connection points, which are evenly distributed on the force-bearing block. When the first cylinder is connected to the force-bearing block, it is connected at the connection point.

[0009] Preferably, when the pneumatic regulating valve for persulfate production is being cleaned, the two first cylinders of each stretching group reciprocate in opposite directions.

[0010] Preferably, the outer ring is periodically replaced when the pneumatic regulating valve for sulfate production is cleaned, as it is connected to different annular connectors.

[0011] Preferably, the hose portion further includes a plurality of pressure-resistant rings; The inner diameter of the plurality of pressure-resistant rings is equal to the outer diameter of the elastic hose, and the plurality of pressure-resistant rings are evenly distributed on the outer periphery of the elastic hose outside the closing section.

[0012] Preferably, the outer periphery of the elastic hose outside the closing section has multiple hanging points distributed along the length direction of the elastic hose; Multiple pressure-resistant rings are attached to hanging points and the hanging points are replaced when cleaning the pneumatic regulating valve for sulfate production.

[0013] Preferably, the flexible hose is made of fluororubber or perfluoroether rubber; The elongation of the flexible hose is controlled to be within 75% when stretched.

[0014] Preferably, the surface of the elastic hose of the closing section and the surface of the clamping block are provided with a frosted coating.

[0015] The beneficial effects of this invention are as follows: By installing a vibration-free base and using a rigid outer tube for transmission via an elastic hose, the vibration of the pipeline can be isolated from other structures of the valve body, such as the two sets of tensioning groups and the adjusting part, thus preventing the vibration generated by the pipeline from affecting other structures. Through the cooperation of the elastic hose and the two sets of tensioning groups, the first cylinders of the two sets of tensioning groups reciprocate in opposite directions, stretching the elastic hose repeatedly. During stretching / compression, the opposite direction of stretching ensures that the diameter of the elastic hose is evenly pulled / compressed on both sides of the annular connector, resulting in minimal diameter change and not affecting the normal use of the pipeline. Therefore, reciprocating stretching can be performed while the elastic hose is in transit. The stretching / compression causes the inner surface shape to be irregular, making it difficult for persulfate to crystallize or scale on the inner surface of the elastic hose, thereby reducing the frequency of subsequent maintenance. Simultaneously, reducing crystallization or scaling prevents crystallization or scaling from damaging the elastic hose when the adjusting part is closed, extending its service life. Furthermore, the use of an elastic hose with no internal mechanical structure ensures a seamless connection, eliminating the need to consider the problem of persulfate seeping into valve gaps. Through the coordination of multiple clamping zones, tensioning groups, and adjusting sections, if persulfate passes through the flexible hose when the two adjusting groups are closed, it indicates that crystals or scale buildup within the flexible hose in the closing section prevents closure. By coordinating the tensioning and adjusting groups, the position of the flexible hose used for closing can be continuously adjusted, ensuring closure before maintenance and preventing valve failure. Rounding the edges of the clamping blocks prevents shearing forces from cutting or creating scratches on the flexible hose, thus avoiding performance degradation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a pneumatic regulating valve for persulfate production according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a pneumatic regulating valve for persulfate production according to a specific embodiment of the present invention; Labeling Explanation: 1. Fixing Part; 11. Base; 12. Outer Tube Body; 13. Force-Bearing Block; 2. Flexible Hose Part; 21. Elastic Flexible Hose; 22. Tensioning Assembly; 221. Outer Ring; 222. First Cylinder; 23. Closing Section; 24. Clamping Area; 25. Flange; 3. Adjusting Part; 31. Second Cylinder; 32. Clamping Block. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figure 1 as well as Figure 2 A pneumatic regulating valve for persulfate production includes: a fixed part 1, a flexible part 2, and an regulating part 3; The fixing part 1 includes a base 11 and a rigid outer tube 12 connected to the base 11. The base 11 is installed in a vibration-free location. The outer tube 12 is a cylindrical structure with open ends. Each of the open ends has an inwardly extending force-bearing block 13. The hose section 2 is located inside the outer tube body 12. The hose section 2 includes an elastic hose 21 and two sets of tensioning groups 22. The tensioning group 22 includes an outer ring 221 and two first cylinders 222. The elastic hose 21 is coaxially arranged with the outer tube 12, and the two sets of tensioning groups 22 are mirror images of each other with a gap between them; the elastic hose 21 corresponding to the gap is a closing section 23, which is divided into multiple clamping areas 24; the outer periphery of the elastic hose 21 has multiple annular connectors arranged along the length direction of the elastic hose 21, and the outer ring 221 is detachably fixed to the annular connectors and periodically replaced with different annular connectors; the included angle of the two first cylinders 222 of the tensioning group 22 is 180° and both are parallel to the length direction of the elastic hose 21; one end of the first cylinder 222 is connected to the outer ring 221, and the other end is fixed to the force-bearing block 13; The adjustment part 3 includes two sets of adjustment groups arranged vertically. Each adjustment group includes a second cylinder 31 and a clamping block 32. The second cylinder 31 is connected to the inner wall of the outer tube 12 corresponding to the closing section 23. The clamping block 32 is connected to the end of the second cylinder 31. The side of the clamping block 32 facing the elastic hose 21 is a horizontal plane and the edge is rounded. When the pneumatic regulating valve for persulfate production adjusts the flow rate, it controls the movement of the second cylinder 31, thereby controlling the distance between the two clamping blocks 32. When the two sets of adjustment groups are not closed, the first cylinder 222 of the two sets of tensioning groups 22 periodically moves in opposite directions to stretch and compress the elastic hose 21. The first cylinder 222 of the two sets of tensioning groups 22 is operated to align any clamping area 24 with the clamping block 32; if persulfate passes through the elastic hose 21 when the two sets of adjustment groups are closed, the two sets of adjustment groups are separated and the movement of the two sets of tensioning groups 22 is controlled to align with other clamping areas 24, and then the two sets of adjustment groups are closed again until no persulfate passes through the elastic hose 21.

[0019] As described above, by installing a vibration-free area on the base 11 and using a rigid outer tube 12 for transmission via an elastic hose 21, the vibration of the pipeline can be isolated from other structures of the valve body, such as the two sets of tensioning groups 22 and the adjusting part 3, thus preventing the vibration generated by the pipeline from affecting other structures. Through the cooperation of the elastic hose 21 and the two sets of tensioning groups 22, the first cylinders 222 of the two sets of tensioning groups 22 reciprocate in opposite directions to reciprocate and stretch the elastic hose 21. During stretching / compression, due to the opposite direction of stretching, the diameter of the elastic hose 21 can be evenly pulled / compressed on the left and right sides of the annular connector, with minimal change in diameter, which does not affect the normal use of the pipeline. Therefore, the elastic hose 21 can be reciprocated and stretched while being transported. The stretching / compression makes the shape of the inner surface unstable, making it difficult for persulfate to crystallize or scale on the inner surface of the elastic hose 21, thereby reducing the frequency of subsequent maintenance. At the same time, reducing crystallization or scaling can prevent crystallization or scaling from damaging the elastic hose 21 when the adjusting part 3 is closed, thus extending its service life. Furthermore, an elastic hose 21 is used, which has no internal mechanical structure, ensuring a seamless connection and eliminating the need to consider the problem of persulfate seeping into the valve gaps. Through the cooperation of multiple clamping areas 24, tensioning group 22, and adjusting part 3, if persulfate passes through the elastic hose 21 when the two adjusting groups are closed, it indicates that there is crystallization or scale inside the elastic hose 21 of the closing section 23, preventing closure. Through the cooperation of tensioning group 22 and adjusting group, the position of the elastic hose 21 used for closing can be continuously adjusted, ensuring closure before maintenance and avoiding valve failure. The edges of the clamping block 32 are rounded to prevent the shearing force generated at the edges from cutting or creating scratches on the elastic hose 21, which would lead to performance degradation.

[0020] Furthermore, connecting flanges 25 are respectively provided at both ends of the flexible hose 21.

[0021] As can be seen from the above description, by setting the connecting flange 25, the structure is mature, the connection is stable, and it is convenient for the flexible hose 21 to be adapted and connected to the existing persulfate conveying pipeline.

[0022] Furthermore, the outer tube 12 is the same length as the elastic hose 21, and the force-bearing block 13 has a ring structure; An elastic seal is also provided between the force-bearing block 13 and the connecting flange 25.

[0023] As can be seen from the above description, the pneumatic regulating valve for persulfate production can be isolated from the outside world by the elastic seal, reducing the amount of ash entering the outer pipe 12 and causing wear, thus extending its service life; it can also isolate vibrations generated by other pipes.

[0024] Furthermore, the force-bearing block 13 is provided with a greater than or equal number of even numbers of connection points, which are evenly distributed on the force-bearing block 13; When the first cylinder 222 is connected to the force-bearing block 13, it is connected at the connection point.

[0025] As can be seen from the above description, by regularly replacing the connection points, stress concentration that could lead to localized deformation can be avoided.

[0026] Furthermore, when the pneumatic regulating valve for persulfate production is cleaned, the two first cylinders 222 of each stretching group 22 reciprocate in opposite directions.

[0027] As can be seen from the above description, by having the two first cylinders 222 reciprocate in opposite directions, the elastic hose 21 is twisted, which allows the same section of the elastic hose 21 to be subjected to tension in different directions, making it easier to remove some scale or crystals and improving the subsequent cleaning effect.

[0028] Furthermore, the outer ring 221 is periodically replaced with different annular connectors when cleaning the pneumatic regulating valve used in sulfate production.

[0029] Furthermore, the hose portion 2 also includes a plurality of pressure-resistant rings; The inner diameter of the plurality of pressure-resistant rings is equal to the outer diameter of the elastic hose 21, and the plurality of pressure-resistant rings are evenly distributed on the outer periphery of the elastic hose 21 outside the closing section 23.

[0030] As described above, the pressure-resistant ring reduces the outward expansion of the flexible hose 21 due to excessive internal pressure, thus minimizing its impact on flow stability. The closing section 23 is avoided because the clamping block 32 of the regulating assembly is located on the outer side corresponding to the closing section 23, allowing for the suppression of any expansion.

[0031] Furthermore, the outer periphery of the elastic hose 21 outside the closing section 23 has multiple hanging points distributed along the length direction of the elastic hose 21. Multiple pressure-resistant rings are attached to hanging points and the hanging points are replaced when cleaning the pneumatic regulating valve for sulfate production.

[0032] As can be seen from the above description, by attaching the pressure ring to the hanging point, the pressure ring can only play a restraining role and can move with it when stretched. When stretched, the diameter of the elastic hose 21 is slightly reduced. The hanging method can achieve temporary separation between the pressure ring and the elastic hose 21 when stretched, and the hanging point can be changed regularly to avoid stress concentration caused by fixing in one place for a long time.

[0033] Furthermore, the material of the elastic hose 21 is fluororubber or perfluoroether rubber; The elongation of the elastic hose 21 is controlled to be within 75% when stretched.

[0034] As can be seen from the above description, fluororubber or perfluoroelastomer rubber can be used to achieve both elasticity and greater tensile resistance. Fluororubber has a tensile strength range of 10-30 MPa and an elongation at break of 150%-300%; perfluoroelastomer rubber has a tensile strength range of 15-25 MPa and an elongation at break of 100%-200%. An elongation of less than 75% can prevent breakage and ensure that the crystals / scale on the inner surface of the elastic hose 21 are stretched off.

[0035] Furthermore, the surface of the elastic hose 21 of the closing section 23 and the surface of the clamping block 32 are provided with a frosted coating.

[0036] As can be seen from the above description, the frosted coating can increase friction and prevent the elastic hose 21 from slipping off the clamping block 32 due to mutual sliding.

[0037] Example 1 A pneumatic regulating valve for persulfate production includes: a fixed part 1, a flexible part 2, and an regulating part 3; The fixing part 1 includes a base 11 and a rigid outer tube 12 connected to the base 11. The base 11 is installed in a vibration-free location. The outer tube 12 is a cylindrical structure with open ends. Each of the open ends has an inwardly extending force-bearing block 13. The hose section 2 is located inside the outer tube body 12. The hose section 2 includes an elastic hose 21 and two sets of tensioning groups 22. The tensioning group 22 includes an outer ring 221 and two first cylinders 222. The elastic hose 21 is coaxially arranged with the outer tube 12, and the two sets of tensioning groups 22 are mirror images of each other with a gap between them; the elastic hose 21 corresponding to the gap is a closing section 23, which is divided into multiple clamping areas 24; the outer periphery of the elastic hose 21 has multiple annular connectors arranged along the length direction of the elastic hose 21, and the outer ring 221 is detachably fixed to the annular connectors and periodically replaced with different annular connectors; the included angle of the two first cylinders 222 of the tensioning group 22 is 180° and both are parallel to the length direction of the elastic hose 21; one end of the first cylinder 222 is connected to the outer ring 221, and the other end is fixed to the force-bearing block 13; The adjustment part 3 includes two sets of adjustment groups arranged vertically. Each adjustment group includes a second cylinder 31 and a clamping block 32. The second cylinder 31 is connected to the inner wall of the outer tube 12 corresponding to the closing section 23. The clamping block 32 is connected to the end of the second cylinder 31. The side of the clamping block 32 facing the elastic hose 21 is a horizontal plane and the edge is rounded. When the pneumatic regulating valve for persulfate production adjusts the flow rate, it controls the movement of the second cylinder 31, thereby controlling the distance between the two clamping blocks 32 and thus controlling the flow rate. When the two sets of adjustment groups are not closed, the first cylinder 222 of the two sets of tensioning groups 22 periodically moves in opposite directions to stretch and compress the elastic hose 21. The first cylinder 222 of the two sets of tensioning groups 22 is operated to align any clamping area 24 with the clamping block 32; if persulfate passes through the elastic hose 21 when the two sets of adjustment groups are closed, the two sets of adjustment groups are separated and the movement of the two sets of tensioning groups 22 is controlled to align with other clamping areas 24, and then the two sets of adjustment groups are closed again until no persulfate passes through the elastic hose 21.

[0038] The flexible hose 21 is provided with connecting flanges 25 at both ends.

[0039] The outer tube 12 is the same length as the elastic hose 21, and the force-bearing block 13 has a ring structure; An elastic seal is also provided between the force-bearing block 13 and the connecting flange 25.

[0040] The force-bearing block 13 is provided with a greater than or equal to an even number of connection points, and the connection points are evenly distributed on the force-bearing block 13; When the first cylinder 222 is connected to the force-bearing block 13, it is connected at the connection point.

[0041] When the pneumatic regulating valve for persulfate production is cleaned, the two first cylinders 222 of each stretching group 22 reciprocate in opposite directions.

[0042] The outer ring 221 is periodically replaced when the pneumatic regulating valve for sulfate production is cleaned, as it is connected to different annular connectors.

[0043] The material of the elastic hose 21 is fluororubber or perfluoroether rubber (if the pressure resistance of the elastic hose 21 in this application is sufficient to meet the system pressure generated during the production and transportation of persulfate, there is no need for pressure-resistant rings to strengthen the pressure resistance). The elongation of the elastic hose 21 is controlled to be within 75% when stretched.

[0044] The surface of the elastic hose 21 of the closing section 23 and the surface of the clamping block 32 are provided with a frosted coating.

[0045] Example 2 A pneumatic control valve for persulfate production, which is similar to Example 1 and will not be repeated here, differs in that: The hose section 2 also includes multiple pressure-resistant rings; The inner diameter of the plurality of pressure-resistant rings is equal to the outer diameter of the elastic hose 21, and the plurality of pressure-resistant rings are evenly distributed on the outer periphery of the elastic hose 21 outside the closing section 23.

[0046] The elastic hose 21 outside the closing section 23 has multiple hanging points distributed along the length of the elastic hose 21. Multiple pressure-resistant rings are attached to hanging points and the hanging points are replaced when cleaning the pneumatic regulating valve for sulfate production.

[0047] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A pneumatic regulating valve for persulfate production, characterized in that, include: Fixing part, hose part and adjusting part; The fixing part includes a base and a rigid outer tube connected to the base. The base is installed in a vibration-free location. The outer tube is a cylindrical structure with open ends. Each of the open ends has an inwardly extending force-bearing block. The hose section is located inside the outer tube. The hose section includes an elastic hose and two sets of tensioning groups. The tensioning group includes an outer ring and two first cylinders. The elastic hose is coaxially arranged with the outer tube body, and the two sets of tensioning groups are mirror images of each other with a gap between them; the elastic hose corresponding to the gap is a closing section, and the closing section is divided into multiple clamping areas; the outer periphery of the elastic hose has multiple annular connectors arranged along the length direction of the elastic hose, and the outer ring is detachably fixed to the annular connectors and periodically replaced with different annular connectors; the included angle of the two first cylinders of the tensioning group is 180° and both are parallel to the length direction of the elastic hose; one end of the first cylinder is connected to the outer ring, and the other end is fixed to the force-bearing block; The adjustment unit includes two sets of adjustment groups arranged vertically. Each adjustment group includes a second cylinder and a clamping block. The second cylinder is connected to the inner wall of the outer tube corresponding to the closing section, and the clamping block is connected to the end of the second cylinder. The side of the clamping block facing the elastic hose is horizontal and the edge is rounded. When the two sets of adjustment groups are not closed, the first cylinders of the two sets of tensioning groups are periodically moved in opposite directions to stretch and compress the elastic hose. The first cylinder of the two sets of tensioning groups is controlled to align any clamping area with the clamping block; if persulfate passes through the elastic hose when the two sets of adjustment groups are closed, the two sets of adjustment groups are separated and the movement of the two sets of tensioning groups is controlled to align with other clamping areas, and then the two sets of adjustment groups are closed again until no persulfate passes through the elastic hose.

2. The pneumatic regulating valve for persulfate production according to claim 1, characterized in that, The flexible hose is provided with connecting flanges at both ends.

3. The pneumatic regulating valve for persulfate production according to claim 2, characterized in that, The outer tube is the same length as the elastic hose, and the force-bearing block is a ring structure; An elastic seal is also provided between the load-bearing block and the connecting flange.

4. The pneumatic regulating valve for persulfate production according to claim 3, characterized in that, The force-bearing block has four or more even numbers of connection points, which are evenly distributed on the force-bearing block. When the first cylinder is connected to the force-bearing block, it is connected at the connection point.

5. The pneumatic regulating valve for persulfate production according to claim 4, characterized in that, When the pneumatic regulating valve for persulfate production is being cleaned, the two first cylinders of each stretching group reciprocate in opposite directions.

6. The pneumatic regulating valve for persulfate production according to claim 5, characterized in that, The outer ring is periodically replaced when the pneumatic regulating valve for sulfate production is cleaned, as it is connected to different annular connectors.

7. The pneumatic regulating valve for persulfate production according to claim 5, characterized in that, The hose section also includes multiple pressure-resistant rings; The inner diameter of the plurality of pressure-resistant rings is equal to the outer diameter of the elastic hose, and the plurality of pressure-resistant rings are evenly distributed on the outer periphery of the elastic hose outside the closing section.

8. The pneumatic regulating valve for persulfate production according to claim 7, characterized in that, The outer periphery of the elastic hose outside the closing section has multiple hanging points distributed along the length of the elastic hose. Multiple pressure-resistant rings are attached to hanging points and the hanging points are replaced when cleaning the pneumatic regulating valve for sulfate production.

9. The pneumatic regulating valve for persulfate production according to claim 1, characterized in that, The flexible hose is made of fluororubber or perfluoroether rubber; The elongation of the flexible hose is controlled to be within 75% when stretched.

10. The pneumatic regulating valve for persulfate production according to claim 1, characterized in that, The surface of the elastic hose of the closing section and the surface of the clamping block are provided with a frosted coating.

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