Gate valve cover with sealing structure

Abstract

The utility model relates to a gate valve bonnet with a sealing structure, which belongs to the technical field of gate valves and comprises a shell cover, a sealing sleeve, a flange plate and a sealing groove. The sealing sleeve is arranged on the shell cover, a flange plate connected with the valve body through a fastening screw is arranged on the shell cover, and a sealing groove for containing a sealing rubber ring is formed in the flange plate. An inner cylinder is tightly attached to the interior of the shell cover, a rotating disc is arranged in the inner cylinder, and a sealing ring tightly attached to the inner wall of the inner cylinder is arranged outside the rotating disc; and an adjustable sealing assembly capable of sealing one side surface of the rotating disc in an adjustable manner is arranged between the shell cover and the rotating disc. According to the gate valve cover with the sealing structure, when the rotating disc is connected with the gate plate and the valve rod, the sealing ring improves the sealing effect of the rotating disc, meanwhile, the two side faces of the rotating disc are tightly attached and sealed through the arranged adjusting sealing assembly and the elastic adjusting sealing assembly, and the phenomenon of liquid leakage caused by the fact that the sealing effect is affected by abrasion is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve cover with a sealing structure. Background Technology

[0002] The bonnet of a gate valve is an important component of the valve structure. It is usually located on top of the valve body and serves to seal the internal components of the valve body. The design and function of the bonnet have a significant impact on the performance and reliability of the gate valve.

[0003] In this design, the gate valve cover is sealed by a sealing ring when connected to the valve body via a flange, and when connected to the valve stem, it is connected by a filler and a sealing ring. However, the valve stem needs to be rotated to control the opening and closing of the valve plate. Therefore, the rotation and adjustment of the valve stem will cause wear to the sealing components, resulting in leakage. Therefore, this application designs a gate valve cover with an adjustable adaptive sealing structure to solve this defect of the prior art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a gate valve cover with a sealing structure, which has advantages such as an adjustable adaptive sealing structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gate valve cover with a sealing structure, comprising a shell cover, a sealing sleeve, a flange, and a sealing groove;

[0006] The housing cover is provided with the sealing sleeve, and the housing cover is provided with a flange connected to the valve body by fastening screws. The flange is provided with a sealing groove for placing a sealing rubber ring.

[0007] An inner cylinder is tightly fitted inside the shell cover, and a rotating disk is provided inside the inner cylinder. A sealing ring is provided on the outside of the rotating disk to fit tightly against the inner wall of the inner cylinder.

[0008] An adjustable sealing assembly is provided between the shell cover and the rotating disk to adjust and seal one side of the rotating disk;

[0009] An elastically adjustable sealing assembly is provided between the inner cylinder and the rotating disk to adaptively adjust the sealing of the other side of the rotating disk.

[0010] As a preferred embodiment of the present invention, the adjusting sealing assembly includes a sealing element and an adjusting element;

[0011] The sealing element includes an annular sealing seat installed on the inner wall of the inner cylinder and an annular sealing ring installed outside the rotating disk and located inside the annular sealing seat;

[0012] The annular sealing seat and the annular sealing ring are both concentric with the rotating disk.

[0013] The above technical solution facilitates the sealing of one side of the rotating disk.

[0014] As a preferred embodiment of this utility model, the adjusting component includes an annular limiting groove located outside the rotating disk and concentric with the rotating disk. Multiple movable adjusting rods that penetrate through and extend to the outside of the cover slide within the annular limiting groove. Multiple stainless steel springs located outside the movable adjusting rods are installed on the outside of the cover. Adjusting limiting nuts that contact the stainless steel springs are threaded onto the outside of the movable adjusting rods.

[0015] By adopting the above technical solution, it is easy to improve the sealing effect of the sealing element on the rotating disk by adjustment.

[0016] In a preferred embodiment of this invention, the movable adjusting rods are distributed in a ring at equal intervals within the annular limiting groove, and the movable adjusting rods and the annular limiting grooves are not separated from each other.

[0017] The above technical solution ensures that the rotation of the rotating disk is not affected during adjustment.

[0018] As a preferred embodiment of the present invention, the elastically adjustable sealing assembly includes a movable sealing element and an adaptive elastically adjustable element;

[0019] The movable seal includes a sealing annular groove on the other side of the rotating disk and an elastic rubber annular plate installed on the outside of the inner cylinder. A connecting annular plate is installed on the inner wall of the elastic rubber annular plate, and an annular sealing ring II located in the sealing annular groove is installed on the surface of the connecting annular plate.

[0020] The elastic rubber annular plate, the connecting annular plate, the sealing annular groove, and the second annular sealing ring are all concentric with the rotating disk.

[0021] The above technical solution allows for sealing of the other side of the rotating disk without affecting its rotation.

[0022] As a preferred embodiment of this utility model, the adaptive elastic adjustment component includes multiple hollow cylinders installed outside the connecting annular plate. A telescopic spring is installed inside the hollow cylinder, and a moving rod is installed at the other end of the telescopic spring. A connecting rod connected to the inner cylinder is installed at the other end of the moving rod.

[0023] The above technical solution facilitates adaptive elastic adjustment to compress the movable seal and improve the sealing effect.

[0024] In a preferred embodiment of this invention, the hollow cylinders are arranged in a ring at equal intervals, and the movable rods are inseparable from the hollow cylinders.

[0025] By adopting the above technical solution, the inability to reset the moving rod after separation can be avoided.

[0026] As a preferred embodiment of this utility model, a threaded connecting cylinder for connecting the gate is installed at the center of one side of the rotating disk, and a mounting seat for installing and fastening the rotating valve stem is installed at the center of the other side of the rotating disk, with the rotating valve stem passing through the sealing sleeve.

[0027] The above technical solution facilitates the connection between the rotating disc and the valve plate and the regulating valve stem.

[0028] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0029] The gate valve cover with a sealing structure connects the gate and valve stem via a rotating disc. The sealing ring enhances the sealing effect of the rotating disc, while the adjustable sealing component and the elastic adjustable sealing component ensure a tight seal on both sides of the rotating disc, preventing wear from affecting the sealing effect and causing leakage. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present utility model;

[0031] Figure 2 This is a bottom-view perspective view of the present invention;

[0032] Figure 3 This is a bottom view of the present invention;

[0033] Figure 4 This utility model Figure 3 Sectional view at point AA;

[0034] Figure 5 This is a partial perspective view of the present invention.

[0035] In the diagram: 1. Shell cover; 2. Sealing sleeve; 3. Inner cylinder; 4. Rotary disk; 5. Sealing ring; 6. Annular sealing seat; 7. Annular sealing ring one; 8. Adjustable moving rod; 9. Stainless steel spring; 10. Adjustable limit nut; 11. Elastic rubber annular plate; 12. Connecting annular plate; 13. Sealing annular groove; 14. Annular sealing ring two; 15. Hollow cylinder; 16. Telescopic spring; 17. Moving rod; 18. Connecting rod; 19. Threaded connecting cylinder; 20. Flange; 21. Sealing groove; 22. Annular limit groove. Detailed Implementation

[0036] 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.

[0037] Please see Figure 1 In this embodiment, a gate valve cover with a sealing structure includes a shell cover 1, a sealing sleeve 2, a flange 20, and a sealing groove 21.

[0038] The sealing sleeve 2 is connected to the center of the upper surface of the cover 1. The lower surface of the cover 1 is integrally connected to a flange 20 that is connected to the valve body by fastening screws. The flange 20 has a sealing groove 21 for placing a sealing rubber ring.

[0039] A sealing rubber ring is placed in the sealing groove 21 to ensure the sealing between the flange 20 and the valve body flange.

[0040] Please see Figures 2 to 4 In this embodiment, an inner cylinder 3 is tightly fitted and fixed inside the shell cover 1. A rotating disk 4 is provided inside the inner cylinder 3. A sealing ring 5 is fitted to the outside of the rotating disk 4 and tightly fitted to the inner wall of the inner cylinder 3.

[0041] The diameter of the sealing ring 5 is equal to the inner diameter of the inner cylinder 3, and the diameter of the inner cylinder 3 is equal to the inner diameter of the shell cover 1.

[0042] An adjustable sealing assembly is provided between the cover 1 and the rotating disk 4 to adjust and seal one side of the rotating disk 4.

[0043] It should be noted that the adjusting sealing assembly includes a sealing element and an adjusting element;

[0044] The sealing element includes an annular sealing seat 6 installed and fixed to the inner wall of the inner cylinder 3 and an annular sealing ring 7 installed and fixed to the outside of the rotating disk 4 and located inside the annular sealing seat 6.

[0045] The opening width of the annular sealing seat 6 is equal to the width of the annular sealing ring 7.

[0046] The annular sealing seat 6 and the annular sealing ring 7 are both concentric with the rotating disk 4.

[0047] The adjusting component includes an annular limiting groove 22 opened outside the rotating disk 4 and concentric with the rotating disk 4. Multiple movable adjusting rods 8 are slidably slidable in the annular limiting groove 22 and extend to the outside of the cover 1. Multiple stainless steel springs 9 located outside the movable adjusting rods 8 are installed and fixed on the outside of the cover 1. Adjusting limiting nuts 10 that contact the stainless steel springs 9 are threadedly connected to the outside of the movable adjusting rods 8.

[0048] It should be noted that during the rotation of the rotating disk 4, the annular sealing ring 7 is driven to rotate within the annular sealing seat 6, and the moving adjusting rod 8 rotates synchronously within the annular limiting groove 22 for circumferential limiting.

[0049] The movable adjusting rods 8 are distributed in a ring at equal intervals within the annular limiting groove 22, and the movable adjusting rods 8 and the annular limiting groove 22 are inseparable from each other.

[0050] Please see Figures 4 to 5 In this embodiment, an elastic adjustment sealing assembly is provided between the inner cylinder 3 and the rotating disk 4 to adaptively adjust the sealing of the other side of the rotating disk 4.

[0051] It should be noted that the elastically adjustable sealing assembly includes a movable seal and an adaptive elastically adjustable element.

[0052] The movable sealing element includes a sealing annular groove 13 formed on the other side of the rotating disk 4, and an elastic rubber annular plate 11 installed and fixed to the outside of the inner cylinder 3. A connecting annular plate 12 is installed and fixed to the inner ring wall of the elastic rubber annular plate 11, and an annular sealing ring 14 located in the sealing annular groove 13 is installed and fixed to the surface of the connecting annular plate 12.

[0053] The elastic rubber ring plate 11 is a deformable and stretchable ring-shaped plastic, while the connecting ring plate 12 is a rigid ring-shaped plate.

[0054] The elastic rubber annular plate 11, the connecting annular plate 12, the sealing annular groove 13, and the annular sealing ring 14 are all concentric with the rotating disk 4.

[0055] The adaptive elastic adjustment component includes multiple hollow cylinders 15 that are equidistantly distributed in a ring shape and installed and fixed outside the connecting annular plate 12. A telescopic spring 16 is installed and fixed inside the hollow cylinder 15. A moving rod 17 is installed and fixed at the other end of the telescopic spring 16. A connecting rod 18 connected to the inner cylinder 3 is installed and fixed at the other end of the moving rod 17.

[0056] The hollow cylinders 15 are arranged in a ring at equal intervals, and the movable rods 17 are inseparable from the hollow cylinders 15.

[0057] A threaded connecting cylinder 19 for connecting the gate is installed at the center of one side of the rotating disk 4, and a mounting seat for installing and fastening the rotating valve stem is installed at the center of the other side of the rotating disk 4, and the rotating valve stem passes through the sealing sleeve 2.

[0058] The working principle of the above embodiments is as follows:

[0059] During use, the regulating valve stem is connected to the mounting seat on the rotating disk 4 and sealed by the sealing sleeve 2. At the same time, the threaded connecting cylinder 19 on the rotating disk 4 is threaded to the valve plate. When the regulating valve stem is rotated, the threaded connecting cylinder 19 on the rotating disk 4 is driven to rotate. Under the linear limiting action of the valve body on the valve plate, the valve plate can be screwed in and out of the threaded connecting cylinder 19, thereby realizing the on / off control.

[0060] In addition, during the rotation of the rotating disk 4, while the sealing ring 5 tightly adheres to the inner wall of the inner cylinder 3 for sealing, under the elastic extension and contraction of the telescopic spring 16 and the movement of the moving rod 17 within the hollow cylinder 15, the connecting rod 18 connects the inner cylinder 3 to support the moving rod 17, so that the connecting ring plate 12 on the hollow cylinder 15 moves adaptively with the rotation and sealing wear of the second ring sealing ring 14 within the sealing ring groove 13, and the elastic rubber ring plate 11 deforms synchronously, ensuring that the second ring sealing ring 14 always adheres to the sealing ring groove 13 to seal one side of the rotating disk 4;

[0061] Simultaneously, by rotating the adjusting limit nut 10 and screwing it into the thread of the movable adjusting rod 8 to compress the stainless steel spring 9, the movable adjusting rod 8 moves synchronously, pulling the rotating disk 4 to move. This causes the annular sealing ring 7 on the rotating disk 4 to fit tightly against the annular sealing seat 8, achieving an adjustable seal on the other side of the rotating disk 4. After adjustment, as the rotating disk 4 rotates and the annular sealing ring 7 wears down, the elastic extension of the stainless steel spring 9 ensures that the rotating disk 4 is always pulled, guaranteeing that the annular sealing ring 7 always fits against the annular sealing seat 8 to seal the other side of the rotating disk 4, preventing wear from affecting the sealing effect and causing leakage.

Claims

1. A gate valve cover with a sealing structure, comprising a cover (1), a sealing sleeve (2), a flange (20), and a sealing groove (21); The cover (1) is provided with the sealing sleeve (2), the cover (1) is provided with a flange (20) connected to the valve body by fastening screws, and the flange (20) is provided with a sealing groove (21) for placing the sealing rubber ring. Its features are: The inner cylinder (3) is tightly fitted inside the shell cover (1), and a rotating disk (4) is provided inside the inner cylinder (3). A sealing ring (5) is provided on the outside of the rotating disk (4) and tightly fitted to the inner wall of the inner cylinder (3). An adjustable sealing assembly is provided between the shell cover (1) and the rotating disk (4) to adjust and seal one side of the rotating disk (4); An elastically adjustable sealing assembly is provided between the inner cylinder (3) and the rotating disk (4) to adaptively adjust the sealing of the other side of the rotating disk (4).

2. The gate valve cover with a sealing structure according to claim 1, characterized in that: The adjusting sealing assembly includes a sealing element and an adjusting element; The sealing element includes an annular sealing seat (6) installed on the inner wall of the inner cylinder (3) and an annular sealing ring (7) installed on the outside of the rotating disk (4) and located inside the annular sealing seat (6). The annular sealing seat (6) and the annular sealing ring (7) are both concentric with the rotating disk (4).

3. The gate valve cover with a sealing structure according to claim 2, characterized in that: The adjusting component includes an annular limiting groove (22) located outside the rotating disk (4) and concentric with the rotating disk (4). Multiple movable adjusting rods (8) that penetrate and extend to the outside of the shell cover (1) slide in the annular limiting groove (22). Multiple stainless steel springs (9) located outside the movable adjusting rods (8) are installed on the outside of the shell cover (1). Adjusting limiting nuts (10) that contact the stainless steel springs (9) are threaded onto the outside of the movable adjusting rods (8).

4. The gate valve cover with a sealing structure according to claim 3, characterized in that: The movable adjusting rods (8) are distributed in a ring at equal intervals within the annular limiting groove (22), and the movable adjusting rods (8) and the annular limiting groove (22) are not separated from each other.

5. The gate valve cover with a sealing structure according to claim 1, characterized in that: The elastically adjustable sealing assembly includes a movable seal and an adaptive elastically adjustable element; The movable seal includes a sealing annular groove (13) on the other side of the rotating disk (4) and an elastic rubber annular plate (11) installed on the outside of the inner cylinder (3). A connecting annular plate (12) is installed on the inner ring wall of the elastic rubber annular plate (11), and an annular sealing ring II (14) located in the sealing annular groove (13) is installed on the surface of the connecting annular plate (12). Among them, the elastic rubber ring plate (11), the connecting ring plate (12), the sealing ring groove (13) and the second ring sealing ring (14) are all concentric with the rotating disk (4).

6. The gate valve cover with a sealing structure according to claim 5, characterized in that: The adaptive elastic adjustment component includes multiple hollow cylinders (15) installed outside the connecting annular plate (12). A telescopic spring (16) is installed inside the hollow cylinder (15). A moving rod (17) is installed at the other end of the telescopic spring (16). A connecting rod (18) connected to the inner cylinder (3) is installed at the other end of the moving rod (17).

7. The gate valve cover with a sealing structure according to claim 6, characterized in that: The hollow cylinders (15) are arranged in a ring at equal intervals, and the moving rod (17) is inseparable from the hollow cylinders (15).

8. The gate valve cover with a sealing structure according to claim 1, characterized in that: A threaded connecting cylinder (19) for connecting the gate is installed at the center of one side of the rotating disk (4), and a mounting seat for installing and fastening the rotating valve stem is installed at the center of the other side of the rotating disk (4), and the rotating valve stem passes through the sealing sleeve (2).

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