Adjustable corrosion-resistant valve seat structure

Abstract

The utility model discloses an adjustable corrosion-resistant valve seat structure which comprises a valve seat body, a partition plate is fixedly connected into the valve seat body, baffles are fixedly connected to the two ends of the partition plate, a first sealing piece is embedded in the middle of the partition plate, and a first sealing plate is fixedly connected to the top of the first sealing piece. A first connecting rod extending to the outer side of the valve seat body is fixedly connected to the top of the first sealing plate, two second sealing pieces are symmetrically embedded in the first sealing plate, second sealing plates are fixedly connected to the tops of the two second sealing pieces, and second connecting rods extending to the outer side of the valve seat body are fixedly connected to the tops of the two second sealing plates; the top of the valve seat body is fixedly connected with a fixing plate, and the first connecting rod and the two second connecting rods are slidably connected with the fixing plate. By means of the structure, media with different flows can be conveniently released according to the internal pressure, meanwhile, the pressure of the first sealing plate and the second sealing plate can be adjusted through the pressure adjusting mechanism when the media are released, and high flexibility and adjustability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an adjustable corrosion-resistant valve seat structure. Background Art

[0002] Valves play a vital role in fluid control systems, and the valve seat, as a key component of the valve, is used to support the fully closed position of the valve core and form a sealing pair. Its performance directly affects the sealing, corrosion resistance and service life of the valve.

[0003] Current valve seat designs typically have a fixed opening and closing mechanism. This makes it difficult for the valve seat to automatically adjust the release flow of the medium according to actual needs when the internal pressure in the fluid system changes. This makes it difficult to effectively adjust the medium flow according to actual working conditions to meet the needs of the system. Therefore, the present utility model provides an adjustable corrosion-resistant valve seat structure to address the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable corrosion-resistant valve seat structure, which can conveniently release media of different flow rates according to internal pressure. At the same time, the pressure when the first sealing plate and the second sealing plate release the medium can be adjusted through the pressure regulating mechanism. It has high flexibility and adjustability, which is conducive to adjustment according to actual needs to meet the use under different working conditions.

[0005] To achieve the above-mentioned object, an adjustable corrosion-resistant valve seat structure is provided, comprising a valve seat body, a partition fixedly connected to the interior of the valve seat body, baffles fixedly connected to both ends of the partition, a first sealing member embedded in the middle of the partition, a first sealing plate fixedly connected to the top of the first sealing member, a first connecting rod extending to the outside of the valve seat body fixedly connected to the top of the first sealing plate, two second sealing members symmetrically embedded in the interior of the first sealing plate, the tops of the two second sealing members fixedly connected to the second sealing plate, and the tops of the two second sealing plates fixedly connected to the second connecting rod extending to the outside of the valve seat body;

[0006] A fixing plate is fixedly connected to the top of the valve seat body. The first connecting rod and the two second connecting rods are both slidably connected to the fixing plate, and a connecting plate is fixedly connected to the tops of the two second connecting rods. A pressure regulating assembly is provided on the top of the fixing plate. The pressure regulating assembly includes two fixing rods symmetrically and fixedly connected to the top of the fixing plate, a top plate fixedly connected to the tops of the two fixing rods, two first springs sleeved on the outer sides of the corresponding fixing rods, two first limiting plates slidably connected to the outer sides of the corresponding fixing rods, two first nuts threadedly connected to the outer sides of the corresponding fixing rods and located above the first limiting plates, a movable rod slidably connected to the inside of the top plate, a second limiting plate fixedly connected to the bottom of the movable rod, a second spring fixedly connected between the second limiting plate and the first connecting rod, and a second nut threadedly connected to the outer side of the movable rod and located on the top of the top plate. The first connecting rod is slidably connected to the inside of the connecting plate.

[0007] According to the adjustable corrosion-resistant valve seat structure described above, the bottom of the first connecting rod is threadedly connected to the first sealing plate, and the bottoms of the two second connecting rods are also threadedly connected to the corresponding second sealing plates.

[0008] According to the adjustable corrosion-resistant valve seat structure described above, both the first sealing member and the second sealing member are made of polytetrafluoroethylene.

[0009] According to the adjustable corrosion-resistant valve seat structure described above, corrosion-resistant coatings are provided on the inner surface of the valve seat body, the partition plate, the baffle plate, the outer surfaces of the first sealing plate, the second sealing plate, the first connecting rod, and the second connecting rod.

[0010] According to the adjustable corrosion-resistant valve seat structure described above, a guide rod located inside the second spring is also fixedly connected to the bottom of the second limiting plate, and the bottom end of the guide rod is slidably connected to the top side of the first connecting rod.

[0011] According to the adjustable corrosion-resistant valve seat structure described above, flange plates are fixedly connected to both ends of the valve seat body.

[0012] The present utility model has the following beneficial effects:

[0013] Compared with the prior art, this adjustable corrosion-resistant valve seat structure can conveniently release different flow rates of the medium according to the internal pressure. At the same time, the pressure when the first sealing plate and the second sealing plate release the medium can be adjusted through the pressure regulating mechanism, which has high flexibility and adjustability and is conducive to adjusting according to actual needs to meet the use under different working conditions.

[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0015] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the first overall structure of an adjustable corrosion-resistant valve seat structure of the present utility model;

[0017] Figure 2 It is of an adjustable corrosion-resistant valve seat structure of the present utility model Figure 1 Schematic diagram of the enlarged structure at A in;

[0018] Figure 3 It is a schematic diagram of the second overall structure of an adjustable corrosion-resistant valve seat structure of the present utility model;

[0019] Figure 4 It is a schematic diagram of the internal sectional structure of the valve seat body of an adjustable corrosion-resistant valve seat structure of the present utility model.

[0020] Figure 5 It is a schematic diagram of the connection structure of the first connecting rod, partition plate and guide rod of an adjustable corrosion-resistant valve seat structure of the present utility model

[0021] Legend:

[0022] 1. Valve seat body; 2. Partition plate; 3. Baffle; 4. First sealing plate; 5. First sealing member; 6. First connecting rod; 7. Second connecting rod; 8. Second sealing plate; 9. Second sealing member; 10. Fixed plate; 11. Connecting plate; 12. Fixed rod; 13. Top plate; 14. First limiting plate; 15. First spring; 16. First nut; 17. Movable rod; 18. Second limiting plate; 19. Second spring; 20. Guide rod; 21. Second nut. Specific implementation manners

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] Refer to Figures 1 - 5, in an embodiment of the present utility model, an adjustable corrosion-resistant valve seat structure includes a valve seat body 1. Inside the valve seat body 1, a partition 2 is fixedly connected. At both ends of the partition 2, baffles 3 are fixedly connected. The partition 2 and the baffles 3 can form two spaces inside the valve seat body 1. A first seal 5 is fitted in the middle of the partition 2. At the top of the first seal 5, a first seal plate 4 is fixedly connected. At the top of the first seal plate 4, a first connecting rod 6 extending outside the valve seat body 1 is fixedly connected. Inside the first seal plate 4, two second seals 9 are symmetrically fitted. At the top of both second seals 9, second seal plates 8 are fixedly connected. At the top of both second seal plates 8, second connecting rods 7 extending outside the valve seat body 1 are fixedly connected. At the top of the valve seat body 1, a fixing plate 10 is fixedly connected. The first connecting rod 6 and the two second connecting rods 7 are all slidably connected to the fixing plate 10. And at the top of the two second connecting rods 7, a connecting plate 11 is fixedly connected together. A pressure regulating component is provided on the top of the fixing plate 10. The pressure regulating component includes two fixing rods 12 symmetrically and fixedly connected to the top of the fixing plate 10, a top plate 13 fixedly connected to the top of the two fixing rods 12, two first springs 15 sleeved outside the corresponding fixing rods 12, two first limit plates 14 slidably connected to the outside of the corresponding fixing rods 12, two first nuts 16 threadedly connected to the outside of the corresponding fixing rods 12 and located above the first limit plates 14, a movable rod 17 slidably connected inside the top plate 13, a second limit plate 18 fixedly connected to the bottom of the movable rod 17, a second spring 19 fixedly connected between the second limit plate 18 and the first connecting rod 6, and a second nut 21 threadedly connected to the outside of the movable rod 17 and located on the top of the top plate 13. The first connecting rod 6 is slidably connected inside the connecting plate 11;

[0025] Under the action of the second limit plate 18 and the second spring 19, the first seal 5 can be stably fitted inside the first seal plate 4. Under the action of the first spring 15 and the first limit plate 14, the second seal 9 can be stably fitted inside the partition 2. Thus, under the action of the first seal 5 and the second seal 9, the disconnection of the valve seat body 1 can be realized. When the pressure of the flowing medium inside the valve seat body 1 is small, the pressure pushes the second seal plate 8 to move upward to separate the second seal 9, then the medium can be released. When the pressure of the flowing medium inside the valve seat body 1 is large, the pressure synchronously pushes the first seal plate 4 and the second seal plate 8 to move upward to release the medium. And the compression degree of the first spring 15 can be adjusted by rotating the first nut 16, adjusting the height position of the first limit plate 14 to adjust the pressure when the second seal plate 8 releases the medium. At the same time, the compression degree of the second spring 19 can be adjusted by rotating the second nut 21, adjusting the height position of the second limit plate 18 to adjust the pressure when the first seal plate 4 releases the medium, which is beneficial to adjusting the flow rate of the released medium according to actual needs and meeting the usage requirements under different working conditions.

[0026] The bottom of the first connecting rod 6 and the first sealing plate 4 are connected by threads. The threaded movable connection between the first sealing plate 4 and the first connecting rod 6 facilitates the replacement of the first seal 5. The bottoms of the two second connecting rods 7 and the corresponding second sealing plates 8 are also connected by threads. The threaded movable connection between the second sealing plate 8 and the second connecting rod 7 facilitates the replacement of the second seal 9.

[0027] Both the first seal 5 and the second seal 9 are made of polytetrafluoroethylene. The first seal 5 and the second seal 9 made of polytetrafluoroethylene have strong corrosion resistance. Corrosion-resistant coatings are provided on the inner surface of the valve seat body 1, the partition 2, the baffle 3, the outer surfaces of the first sealing plate 4, the second sealing plate 8, the first connecting rod 6 and the second connecting rod 7. The corrosion-resistant coating can be made of modified polypropylene material, which has high impact resistance, strong mechanical properties, and resists corrosion by a variety of organic solvents, acids and alkalis, which is beneficial to improving the corrosion resistance of the valve seat body 1.

[0028] The bottom of the second limiting plate 18 is also fixedly connected to the guide rod 20 located inside the second spring 19. The bottom end of the guide rod 20 is slidably connected to the top side of the first connecting rod 6. When the first connecting rod 6 moves upward, the second spring 19 is compressed. Arranging the guide rod 20 inside the second spring 19 is beneficial to ensuring the stable telescopic operation of the second spring 19.

[0029] Both ends of the valve seat body 1 are fixedly connected with flange plates. Through holes are opened inside the flange plates. The through holes are connected with external bolts to facilitate connecting the valve seat body 1 with the pipeline through the flange plates.

[0030] Working principle: Under the action of the second limiting plate 18 and the second spring 19, the first seal 5 can be stably fitted inside the first sealing plate 4. Under the action of the first spring 15 and the first limiting plate 14, the second seal 9 can be stably fitted inside the partition 2. Thus, the valve seat body 1 can be disconnected under the action of the first seal 5 and the second seal 9. When the pressure of the flowing medium inside the valve seat body 1 is small, the pressure pushes the second sealing plate 8 upward to separate the second seal 9 to release the medium. When the pressure of the flowing medium inside the valve seat body 1 is large, the pressure synchronously pushes the first sealing plate 4 and the second sealing plate 8 upward to release the medium. And the compression degree of the first spring 15 can be adjusted by rotating the first nut 16, adjusting the height position of the first limiting plate 14 to adjust the pressure when the second sealing plate 8 releases the medium. At the same time, the compression degree of the second spring 19 can be adjusted by rotating the second nut 21, adjusting the height position of the second limiting plate 18 to adjust the pressure when the first sealing plate 4 releases the medium, which is beneficial to adjusting the flow rate of the released medium according to actual needs and meeting the use requirements under different working conditions.

[0031] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An adjustable corrosion-resistant valve seat structure, characterized in that, It includes a valve seat body (1), a partition plate (2) is fixedly connected inside the valve seat body (1), baffles (3) are fixedly connected to both ends of the partition plate (2), a first seal (5) is fitted in the middle of the partition plate (2), a first seal plate (4) is fixedly connected to the top of the first seal (5), a first connecting rod (6) extending to the outside of the valve seat body (1) is fixedly connected to the top of the first seal plate (4), two second seals (9) are symmetrically fitted inside the first seal plate (4), second seal plates (8) are fixedly connected to the tops of the two second seals (9), and second connecting rods (7) extending to the outside of the valve seat body (1) are fixedly connected to the tops of the two second seal plates (8); A fixing plate (10) is fixedly connected to the top of the valve seat body (1), the first connecting rod (6) and the two second connecting rods (7) are all slidably connected to the fixing plate (10), and a connecting plate (11) is fixedly connected to the tops of the two second connecting rods (7) together. A pressure regulating assembly is provided on the top of the fixing plate (10). The pressure regulating assembly includes two fixing rods (12) symmetrically and fixedly connected to the top of the fixing plate (10), a top plate (13) fixedly connected to the tops of the two fixing rods (12), two first springs (15) sleeved on the outer sides of the corresponding fixing rods (12), two first limiting plates (14) slidably connected to the outer sides of the corresponding fixing rods (12), two first nuts (16) threadedly connected to the outer sides of the corresponding fixing rods (12) and located above the first limiting plates (14), a movable rod (17) slidably connected inside the top plate (13), a second limiting plate (18) fixedly connected to the bottom of the movable rod (17), a second spring (19) fixedly connected between the second limiting plate (18) and the first connecting rod (6), and a second nut (21) threadedly connected to the outer side of the movable rod (17) and located on the top of the top plate (13). The first connecting rod (6) is slidably connected inside the connecting plate (11).

2. The adjustable corrosion-resistant valve seat structure according to claim 1, wherein, The bottom of the first connecting rod (6) is threadedly connected to the first seal plate (4), and the bottoms of the two second connecting rods (7) are also threadedly connected to the corresponding second seal plates (8).

3. The adjustable corrosion-resistant valve seat structure according to claim 2, characterized in that, Both the first seal (5) and the second seal (9) are made of polytetrafluoroethylene.

4. An adjustable corrosion-resistant valve seat structure according to claim 3, characterized in that, Corrosion-resistant coatings are provided on the inner surface of the valve seat body (1), the partition plate (2), the baffles (3), the first seal plate (4), the second seal plate (8), the outer surfaces of the first connecting rod (6) and the second connecting rod (7).

5. The adjustable corrosion-resistant valve seat structure according to claim 4, characterized in that: A guide rod (20) located inside the second spring (19) is also fixedly connected to the bottom of the second limiting plate (18), and the bottom end of the guide rod (20) is slidably connected to the top side of the first connecting rod (6).

6. The adjustable corrosion-resistant valve seat structure according to claim 5, characterized in that, Flange plates are fixedly connected to both ends of the valve seat body (1).

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