Embedded sealing structure of stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to an embedded sealing structure of a stop valve, which comprises a valve body and a valve seat, the upper end of the valve body is fixedly connected with the valve seat, the inner side of the valve seat is fixedly connected with a sealing assembly, the upper end of the sealing assembly is fixedly connected with a sealing air bag, and the inner side of the valve seat is slidably connected with a valve cover assembly. The sealing assembly comprises a limiting assembly, the limiting assembly comprises a slotting block, a fourth column groove is formed in the inner side of the slotting block, a fixing groove is formed in the inner side of the slotting block, anti-skid lines are arranged on the inner side of the slotting block, a clamping block is fixedly connected to the inner side of the slotting block, and a gasket with a groove is arranged on the inner side of the limiting assembly. A clamping groove is formed in the inner side of the gasket with the groove, a first column groove is formed in the inner side of the gasket with the groove, the sealing gasket can be better protected, mechanical stress borne by the sealing gasket is reduced, and meanwhile more uniform fastening force is provided to reduce the deformation amplitude of the sealing gasket.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valves, in particular to an embedded sealing structure of a globe valve. Background Technique

[0002] The globe valve is a widely used valve, mainly used to open or close the fluid flow in the pipeline. Its important role in industrial production cannot be ignored, especially in occasions where strict control of flow and pressure is required.

[0003] During the repeated opening and closing of the valve, the gasket in the embedded sealing structure of the globe valve generates friction with the valve, causing deformation of itself, resulting in performance degradation, affecting the sealing performance and safe operation of the globe valve. This situation occurs more frequently when the size of the gasket changes due to temperature. Therefore, an embedded sealing structure of a globe valve is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an embedded sealing structure of a globe valve to solve the problems that the gasket generates friction with the valve, causing deformation of itself, resulting in performance degradation, and affecting the sealing performance and safe operation of the globe valve.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An embedded sealing structure of a globe valve includes a valve body and a valve seat. The upper end of the valve body is fixedly connected with the valve seat. The inner side of the valve seat is fixedly connected with a sealing component. The upper end of the sealing component is fixedly connected with a sealing airbag. The inner side of the valve seat is slidably connected with a valve cover component. A rotary valve is spirally connected inside the rotary valve. The sealing component includes a limiting component. The limiting component includes a grooved block. A fourth column groove is opened inside the grooved block. A fixing groove is opened inside the grooved block. Anti-slip patterns are arranged inside the grooved block. A clamping block is fixedly connected inside the grooved block. A grooved gasket is arranged inside the limiting component. A clamping groove is opened inside the grooved gasket. A first column groove is opened inside the grooved gasket. An annular piece is fixedly connected to one end of the grooved gasket. An inner gasket is arranged inside the limiting component. An annular groove is opened at one end of the inner gasket. A second column groove is opened inside the inner gasket. The sealing airbag includes a rubber airbag. A third column groove is opened inside the rubber airbag. An air groove is opened inside the rubber airbag. An air nozzle is fixedly connected to the upper end of the rubber airbag. The valve cover component includes an upper valve cover. A connection hole is opened inside the upper valve cover. A threaded hole on the cover is opened at the upper end of the upper valve cover. An air pipe is fixedly connected inside the upper valve cover. Inter-pipe threads are opened inside the air pipe. A nut is spirally connected to one end of the inter-pipe threads.

[0007] As a further optimized content of the present utility model, wherein: the central axis of the sealing assembly and the central axis of the sealing airbag are on the same straight line, the central axis of the sealing airbag and the central axis of the valve cover assembly are on the same straight line, and the valve seat, the valve cover assembly and the rotary valve share the same axis.

[0008] As a further optimized content of the present utility model, wherein: there are two grooved gaskets, and the two grooved gaskets are symmetrically distributed up and down at both ends of the inner gasket. There are several card slots, and the card slots are annularly arrayed on the inner side of the grooved gasket.

[0009] As a further optimized content of the present utility model, wherein: the inner side of the first column groove fits with the outer side of the rotary valve, the outer side of the annular piece fits with the inner side of the annular groove. There are two annular grooves, and the two annular grooves are symmetrically distributed up and down at both ends of the inner gasket. The second column groove has the same diameter as the first column groove.

[0010] As a further optimized content of the present utility model, wherein: the upper end of the rubber airbag fits with the lower end of the upper valve cover. The inner side of the third column groove is slidably connected with the rotary valve. The included angle between the air nozzle and the rubber airbag is 90°. The outer side of the air nozzle is helically fitted with the inner side of the pipe thread.

[0011] As a further optimized content of the present utility model, wherein: there are several connection holes, and each connection hole is parallel to each other. The inner side of the threaded hole on the cover is helically fitted with the outer side of the rotary valve. The included angle between the nut and the air pipe is 90°.

[0012] As a further optimized content of the present utility model, wherein: the fourth column groove is cylindrical in shape. The inner side of the fixing groove is fixedly connected with the valve body. The included angle between the anti-slip pattern and the grooved gasket is 90°. The outer side of the block fits with the inner side of the card slot.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the present utility model, through the provided sealing assembly, better protection can be provided for the gasket to reduce the mechanical stress on the gasket. At the same time, a more uniform tightening force is provided to reduce the deformation amplitude of the gasket. The provided sealing airbag can adjust its own size in a timely manner according to requirements to offset the influence of temperature, thereby ensuring the sealing performance and safe operation of the globe valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is an exploded schematic diagram of the overall structure of the present utility model;

[0017] Figure 3Schematic cross-sectional structure diagram of the sealing assembly of the present utility model;

[0018] Figure 4 Schematic exploded structure diagram of the sealing assembly of the present utility model;

[0019] Figure 5 Schematic cross-sectional structure diagram of the sealing airbag of the present utility model;

[0020] Figure 6 Schematic cross-sectional structure diagram of the valve cover assembly of the present utility model;

[0021] Figure 7 Schematic cross-sectional structure diagram of the limiting component of the present utility model.

[0022] In the figure: 1, valve body; 2, valve seat; 3, sealing assembly; 31, limiting component; 311, grooved block; 312, fourth column groove; 313, fixing groove; 314, anti-slip pattern; 315, clamping block; 32, grooved gasket; 33, card slot; 34, first column groove; 35, annular sheet; 36, inner gasket; 37, annular groove; 38, second column groove; 4, sealing airbag; 41, rubber airbag; 42, third column groove; 43, air groove; 44, air nozzle; 5, valve cover assembly; 51, upper valve cover; 52, connection hole; 53, threaded hole on the cover; 54, air pipe; 55, inter-pipe thread; 56, nut; 6, rotary valve. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used here, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Please refer to Figures 1-7 , the present utility model provides a technical solution:

[0026] An embedded sealing structure of a globe valve, comprising a valve body 1 and a valve seat 2. The upper end of the valve body 1 is fixedly connected to the valve seat 2. A sealing assembly 3 is fixedly connected to the inner side of the valve seat 2. A sealing airbag 4 is fixedly connected to the upper end of the sealing assembly 3. A valve cover assembly 5 is slidably connected to the inner side of the valve seat 2. A rotary valve 6 is spirally connected to the inner side of the rotary valve 6. The sealing assembly 3 includes a limit assembly 31. The limit assembly 31 includes a grooved block 311. A fourth column groove 312 is formed in the inner side of the grooved block 311. A fixing groove 313 is formed in the inner side of the grooved block 311. Anti-slip threads 314 are arranged on the inner side of the grooved block 311. A clamping block 315 is fixedly connected to the inner side of the grooved block 311. A grooved gasket 32 is arranged inside the limit assembly 31. A clamping groove 33 is formed in the inner side of the grooved gasket 32. A first column groove 34 is formed in the inner side of the grooved gasket 32. An annular piece 35 is fixedly connected to one end of the grooved gasket 32. An inner gasket 36 is arranged inside the limit assembly 31. An annular groove 37 is formed at one end of the inner gasket 36. A second column groove 38 is formed in the inner side of the inner gasket 36. The sealing airbag 4 includes a rubber airbag 41. A third column groove 42 is formed in the inner side of the rubber airbag 41. An air groove 43 is formed in the inner side of the rubber airbag 41. An air nozzle 44 is fixedly connected to the upper end of the rubber airbag 41. The valve cover assembly 5 includes an upper valve cover 51. A connection hole 52 is formed in the inner side of the upper valve cover 51. A threaded hole on the cover 53 is formed at the upper end of the upper valve cover 51. An air pipe 54 is fixedly connected to the inner side of the upper valve cover 51. An inter-pipe thread 55 is formed in the inner side of the air pipe 54. A nut 56 is spirally connected to one end of the inter-pipe thread 55.

[0027] As a further implementation of this solution, the central axis of the sealing assembly 3 and the central axis of the sealing airbag 4 are on the same straight line. The central axis of the sealing airbag 4 and the central axis of the valve cover assembly 5 are on the same straight line. The valve seat 2, the valve cover assembly 5 and the rotary valve 6 are of the same axis. Such a design is more reasonable and is conducive to the rapid operation of the device.

[0028] As a further implementation of this solution, two grooved gaskets 32 are provided. The two grooved gaskets 32 are symmetrically distributed up and down at both ends of the inner gasket 36. A number of clamping grooves 33 are provided. The clamping grooves 33 are annularly arrayed on the inner side of the grooved gasket 32. Such a design is conducive to the mutual support between components and improves the structural strength.

[0029] As a further implementation of this solution, the inner side of the first column groove 34 fits with the outer side of the rotary valve 6. The outer side of the annular piece 35 fits with the inner side of the annular groove 37. Two annular grooves 37 are provided. The two formed annular grooves 37 are symmetrically distributed up and down at both ends of the inner gasket 36. The second column groove 38 has the same diameter as the first column groove 34. Such a design is more reasonable, strengthens the mutual support between components, and makes the device structure more stable.

[0030] As a further implementation of this solution, the upper end of the rubber airbag 41 fits against the lower end of the upper valve cover 51. A rotary valve 6 is slidably connected inside the third columnar groove 42. The included angle between the air nozzle 44 and the rubber airbag 41 is 90°. The outer side of the air nozzle 44 is helically fitted with the inner side of the pipe thread 55. Such a design is conducive to the mutual cooperation between components and improves the working efficiency of the device;

[0031] As a further implementation of this solution, a number of connecting holes 52 are provided. Each pair of connecting holes 52 is parallel to each other. The inner side of the cover threaded hole 53 is helically fitted with the outer side of the rotary valve 6. The included angle between the nut 56 and the air pipe 54 is 90°. Such a design is conducive to the mutual fixation between components and improves the stability of the device;

[0032] As a further implementation of this solution, the shape of the fourth columnar groove 312 is cylindrical. A valve body 1 is fixedly connected inside the fixing groove 313. The included angle between the anti-slip pattern 314 and the grooved gasket 32 is 90°. The outer side of the clamping block 315 fits against the inner side of the clamping groove 33. Such a design can improve the engagement degree between the components of the device and strengthen the stability of the structure;

[0033] Working process: During the use of the device, the annular piece 35 is snapped into the annular groove 37 to make the grooved gasket 32 fit against the inner gasket 36. The grooved gasket 32 and the inner gasket 36 are placed inside the limiting component 31 to make the clamping block 315 snap into the inner side of the clamping groove 33. At this time, the anti-slip pattern 314 fits against the grooved gasket 32. The sealing component 3 and the sealing airbag 4 are jointly placed inside the valve seat 2. Then the valve cover component 5 is inserted into the valve seat 2 from above so that the bottom end of the valve cover component 5 contacts the upper end of the sealing airbag 4. Bolts are used to fix the upper valve cover 51 and the valve seat 2 together through the connecting holes 52. Then the nut 56 is unscrewed, and gas is filled into the interior of the air pipe 54. The gas enters the air groove 43 through the air nozzle 44 to inflate the rubber airbag 41. After the nut 56 is tightened, both ends of the valve body 1 are connected to the pipelines, and water flow is introduced. At this time, the handwheel at the upper end of the rotary valve 6 is rotated to move the rotary valve 6 upward, and then the water flow can pass through. During the upward movement of the rotary valve 6, the two grooved gaskets 32 and the inner gasket 36 jointly scrape the moisture on the surface of the plug column at the lower end of the rotary valve 6 to prevent the water flow from flowing out as the rotary valve 6 moves. At the same time, the sealing airbag 4 also provides a good sealing environment for the rotary valve 6.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded sealing structure for a globe valve, comprising a valve body (1) and a valve seat (2), characterized in that: A valve body (1) is fixedly connected to the upper end of a valve seat (2). A sealing assembly (3) is fixedly connected to the inner side of the valve seat (2). A sealing airbag (4) is fixedly connected to the upper end of the sealing assembly (3). A valve cover assembly (5) is slidably connected to the inner side of the valve seat (2). A rotary valve (6) is screwed to the inner side of the rotary valve (6). The sealing assembly (3) includes a limiting assembly (31). The limiting assembly (31) includes a slotted block (311). A fourth column groove (312) is formed in the inner side of the slotted block (311). A fixing groove (313) is formed in the inner side of the slotted block (311). Anti-slip threads (314) are arranged on the inner side of the slotted block (311). A clamping block (315) is fixedly connected to the inner side of the slotted block (311). A grooved gasket (32) is arranged inside the limiting assembly (31). A clamping groove (33) is formed in the inner side of the grooved gasket (32). A first column groove (34) is formed in the inner side of the grooved gasket (32). An annular piece (35) is fixedly connected to one end of the grooved gasket (32). An inner gasket (36) is arranged inside the limiting assembly (31). An annular groove (37) is formed at one end of the inner gasket (36). A second column groove (38) is formed in the inner side of the inner gasket (36). The sealing airbag (4) includes a rubber airbag (41). A third column groove (42) is formed in the inner side of the rubber airbag (41). An air groove (43) is formed in the inner side of the rubber airbag (41). An air nozzle (44) is fixedly connected to the upper end of the rubber airbag (41). The valve cover assembly (5) includes an upper valve cover (51). A connection hole (52) is formed in the inner side of the upper valve cover (51). A threaded hole on the cover (53) is formed in the upper end of the upper valve cover (51). An air pipe (54) is fixedly connected to the inner side of the upper valve cover (51). A threaded portion between pipes (55) is formed in the inner side of the air pipe (54). A nut (56) is screwed to one end of the threaded portion between pipes (55).

2. The embedded sealing structure of a globe valve according to claim 1, characterized in that: The central axes of the sealing assembly (3) and the sealing airbag (4) are on the same straight line. The central axes of the sealing airbag (4) and the valve cover assembly (5) are on the same straight line. The valve seat (2), the valve cover assembly (5) and the rotary valve (6) have the same axis center.

3. An embedded sealing structure of a globe valve according to claim 1, characterized in that: Two grooved gaskets (32) are provided. The two grooved gaskets (32) are symmetrically distributed up and down at both ends of the inner gasket (36). A number of clamping grooves (33) are provided. The clamping grooves (33) are annularly and arrayedly distributed on the inner side of the grooved gasket (32).

4. An embedded sealing structure of a globe valve according to claim 1, characterized in that: The inner side of the first column groove (34) is in contact with the outer side of the rotary valve (6). The outer side of the annular piece (35) is in contact with the inner side of the annular groove (37). Two annular grooves (37) are provided. The two annular grooves (37) are symmetrically distributed up and down at both ends of the inner gasket (36). The second column groove (38) has the same diameter as the first column groove (34).

5. An embedded sealing structure of a globe valve according to claim 1, characterized in that: The upper end of the rubber airbag (41) is in contact with the lower end of the upper valve cover (51). A rotary valve (6) is slidably connected inside the third columnar groove (42). The included angle between the air nozzle (44) and the rubber airbag (41) is 90°. The outside of the air nozzle (44) is helically fitted with the inside of the pipe thread (55).

6. The embedded sealing structure of a globe valve according to claim 1, characterized in that: A number of connection holes (52) are provided. Each of the connection holes (52) is parallel to each other. The inside of the threaded hole on the cover (53) is helically fitted with the outside of the rotary valve (6). The included angle between the nut (56) and the air pipe (54) is 90°.

7. An embedded sealing structure of a globe valve according to claim 1, characterized in that: The fourth columnar groove (312) is cylindrical in shape. A valve body (1) is fixedly connected inside the fixing groove (313). The included angle between the anti-slip pattern (314) and the grooved gasket (32) is 90°. The outside of the clamping block (315) is in contact with the inside of the clamping groove (33).

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