Double-clip type knife-shaped gate valve

Abstract

The utility model belongs to the technical field of gate valves, and particularly relates to a wafer type knife gate valve which comprises a valve body, two sets of auxiliary assemblies are installed in the valve body, each auxiliary assembly comprises a first installation plate, a plurality of threaded holes are formed in the valve body and the first installation plates, the first installation plates are fixedly installed on the valve body through a plurality of small bolts, and the small bolts are fixedly installed on the valve body. A second mounting plate is arranged on the side edge of the first mounting plate, an auxiliary ball is mounted between the first mounting plate and the second mounting plate, a valve plate is mounted in the valve body in a sliding mode, the auxiliary ball is matched with the valve plate, two auxiliary assemblies are arranged on the two sides of the valve plate in the valve body respectively, and the auxiliary balls in the auxiliary assemblies make contact with the valve plate. Therefore, resistance is reduced in the vertical moving process of the valve plate, opening and closing of the valve body are facilitated, meanwhile, the sealing performance of the valve body is guaranteed by arranging a square sealing ring, a sealing sleeve and a semi-arc-shaped sealing gasket in the valve body, and the device is simple in structure and convenient to disassemble and rotate.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a wafer-type knife gate valve. Background Technology

[0002] The wafer-type knife gate valve is a compact valve with rapid opening and closing, widely used in industries such as mining, power, chemical, and sewage treatment. It is suitable for shut-off control of media containing particles, fibers, or viscous substances. The valve is directly clamped between two pipe flanges by bolts, eliminating the need for flange short pipes. It requires little installation space and is suitable for compact working conditions. It supports multiple drive methods such as manual, electric, and pneumatic to meet different automation needs.

[0003] In existing wafer-type knife gate valves, the valve plate and valve body rely entirely on sliding friction. This results in high sliding friction resistance of the gate, making opening and closing difficult. Furthermore, the existing wafer-type knife gate valves are complex to disassemble and assemble, leading to maintenance difficulties. To reduce the friction between the valve plate and valve body, and to reduce the difficulty of disassembling and assembling the valve body, we propose a wafer-type knife gate valve. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wafer-type knife gate valve. By setting an auxiliary component on each side of the valve plate inside the valve body, and having an auxiliary ball inside the auxiliary component contact the valve plate, the resistance of the valve plate is reduced during its up-and-down movement, facilitating the opening and closing of the valve body. At the same time, the valve body's airtightness is ensured by setting a square sealing ring, a sealing sleeve, and a semi-arc sealing gasket inside the valve body. This device has a simple structure, is easy to disassemble and rotate, and solves the problems mentioned earlier.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wafer-type knife gate valve includes a valve body with two sets of auxiliary components installed inside. Each auxiliary component includes a first mounting plate. The valve body and the first mounting plate are provided with several threaded holes. The first mounting plate is fixedly mounted on the valve body by several small bolts. A second mounting plate is provided on the side of the first mounting plate. Several protruding posts are fixedly mounted on the second mounting plate. Several concave holes are provided on the first mounting plate. An auxiliary ball is installed between the first mounting plate and the second mounting plate. A valve plate is slidably mounted inside the valve body, and the auxiliary ball cooperates with the valve plate.

[0007] Preferably, a connecting flange is integrally installed on the top of the valve body, and an upper cover plate is provided on the top of the valve body. The upper cover plate and the connecting flange are fixedly connected by several large bolts and large nuts, and a mounting bracket is rotatably installed on the upper cover plate.

[0008] Preferably, a handwheel is fixedly installed on the mounting bracket, a threaded rod passes through the handwheel, the threaded rod is threadedly connected to the mounting bracket, and the threaded rod is fixedly connected to the valve plate.

[0009] Preferably, the valve body has a first groove, a second groove and a third groove, a square sealing ring is installed in the first groove, a sealing sleeve is installed in the second groove, and a semi-circular sealing gasket is installed in the third groove.

[0010] Preferably, two sets of rubber sealing rings are installed between the upper cover plate and the valve body.

[0011] Preferably, the valve body is integrally mounted with mounting flanges on both the front and rear sides, and the mounting flanges are provided with a plurality of mounting holes.

[0012] Beneficial effects

[0013] This invention provides a wafer-type knife gate valve. Compared with the prior art, it has the following advantages:

[0014] 1. This type of wafer-type knife gate valve has an auxiliary component on each side of the valve plate inside the valve body. The auxiliary ball in the auxiliary component contacts the valve plate, thereby reducing the resistance during the up and down movement of the valve plate and facilitating the opening and closing of the valve body. At the same time, the valve body is sealed by setting a square sealing ring, a sealing sleeve and a semi-arc sealing gasket inside the valve body. This device has a simple structure and is easy to disassemble and rotate. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the internal structure of the valve body of this utility model;

[0017] Figure 3 This is an exploded view of the main structure of this utility model;

[0018] Figure 4 This is a cross-sectional view of the valve body of this utility model;

[0019] Figure 5 This is a schematic diagram of the top cover plate, mounting bracket, and handwheel of this utility model;

[0020] Figure 6 This is a schematic diagram showing the disassembly and assembly of the auxiliary components of this utility model;

[0021] Figure 7 This is a schematic diagram of the square sealing ring, sealing sleeve, and semi-circular sealing gasket of this utility model.

[0022] In the diagram: 1. Valve body; 2. Mounting flange; 3. Valve plate; 4. Threaded rod; 5. Top cover plate; 6. Auxiliary components; 9. First groove; 10. Second groove; 11. Third groove; 12. Mounting bracket; 13. Handwheel; 14. Second mounting plate; 15. First mounting plate; 16. Protruding post; 17. Concave hole; 18. Auxiliary ball; 19. Small bolt; 20. Square sealing ring; 21. Sealing sleeve; 22. Semi-arc sealing gasket. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-7 This utility model provides a technical solution: a wafer-type knife gate valve, including a valve body 1, with two sets of auxiliary components 6 installed inside the valve body 1. Each auxiliary component 6 includes a first mounting plate 15. Both the valve body 1 and the first mounting plate 15 have several threaded holes. The first mounting plate 15 is fixedly mounted on the valve body 1 by several small bolts 19. A second mounting plate 14 is provided on the side of the first mounting plate 15. Several protrusions 16 are fixedly mounted on the second mounting plate 14. Several recesses 17 are provided on the first mounting plate 15. An auxiliary ball 18 is installed between the valve body 1 and the second mounting plate 14. A valve plate 3 is slidably installed inside the valve body 1. The auxiliary ball 18 cooperates with the valve plate 3. A connecting flange is integrally installed on the top of the valve body 1. An upper cover plate 5 is provided on the top of the valve body 1. The upper cover plate 5 and the connecting flange are fixedly connected by several large bolts and large nuts. A mounting bracket 12 is rotatably installed on the upper cover plate 5. A handwheel 13 is fixedly installed on the mounting bracket 12. A threaded rod 4 passes through the handwheel 13. The threaded rod 4 is threadedly connected to the mounting bracket 12. The threaded rod 4 is fixedly connected to the valve plate 3.

[0025] Before use, first install the square sealing ring 20, sealing sleeve 21 and semi-arc sealing gasket 22 into the valve body 1. Then, slide the valve plate 3 into the valve body 1. Next, with the cooperation of the convex post 16 and the concave hole 17, assemble the two sets of auxiliary components 6. Then, install the two sets of auxiliary components 6 between the valve body 1 and the valve plate 3. Then, use small bolts 19 to fix the first mounting plate 15 to the valve body 1. At this time, the auxiliary ball 18 between the first mounting plate 15 and the second mounting plate 14 contacts the valve plate 3, reducing the friction between the valve plate 3 and the valve body 1. Then, install the two sets of rubber sealing rings onto the integrated connecting flange on the top of the valve body 1. Then, use several large bolts and large nuts to fix the upper cover plate 5 onto the valve body 1. Then, thread the threaded rod 4 on the valve plate 3 to the mounting bracket 12. Then, rotate the mounting bracket 12 to the upper cover plate 5. Then, pass the handwheel 13 through the threaded rod 4 and fix it to the mounting bracket 12. At this point, the valve installation is complete.

[0026] The valve body 1 has a first groove 9, a second groove 10 and a third groove 11. A square sealing ring 20 is installed in the first groove 9, a sealing sleeve 21 is installed in the second groove 10 and a semi-circular sealing gasket 22 is installed in the third groove 11. Two sets of rubber sealing rings are installed between the upper cover plate 5 and the valve body 1. The valve body 1 has an integrally installed mounting flange 2 on both the front and rear sides, and the mounting flange 2 has several mounting holes.

[0027] In use, the mounting bracket 12 is rotated by turning the handwheel 13. Under the constraint of the upper cover plate 5 and the action of the valve body 1, the mounting bracket 12 drives the valve plate 3 and the threaded rod 4 to move up and down. At the same time, the auxiliary ball 18 between the second mounting plate 14 and the second mounting plate 14 will contact the valve plate 3, thereby reducing the friction between the valve plate 3 and the valve body 1, and facilitating the opening and closing of the valve. Among them, the square sealing ring 20 and the sealing sleeve 21 are used to ensure the sealing between the valve body 1 and the valve plate 3, the semi-arc sealing gasket 22 is used to ensure the sealing of the front and rear ends of the valve when the valve is closed, and the two sets of rubber sealing rings between the upper cover plate 5 and the valve body 1 are used to ensure the sealing between the upper cover plate 5 and the valve body 1 and between the upper cover plate 5 and the mounting bracket 12.

[0028] Working principle: Before use, first install the square sealing ring 20, sealing sleeve 21 and semi-arc sealing gasket 22 into the valve body 1. Then, slide the valve plate 3 into the valve body 1. Next, with the cooperation of the convex post 16 and the concave hole 17, assemble the two sets of auxiliary components 6. Then, install the two sets of auxiliary components 6 between the valve body 1 and the valve plate 3. Then, fix the first mounting plate 15 to the valve body 1 with small bolts 19. At this time, the auxiliary ball 18 between the first mounting plate 15 and the second mounting plate 14 contacts the valve plate 3, reducing the friction between the valve plate 3 and the valve body 1. Then, install the two sets of rubber sealing rings onto the integrated connecting flange on the top of the valve body 1. Then, fix the upper cover plate 5 to the valve body 1 with several large bolts and large nuts. Then, thread the threaded rod 4 on the valve plate 3 to the mounting bracket 12. Then, rotate the mounting bracket 12 to the upper cover plate 5. Then, pass the handwheel 13 through the threaded rod 4 and fix it to the mounting bracket 12. At this point, the valve installation is complete.

[0029] In use, the mounting bracket 12 is rotated by turning the handwheel 13. Under the constraint of the upper cover plate 5 and the action of the valve body 1, the mounting bracket 12 drives the valve plate 3 and the threaded rod 4 to move up and down. At the same time, the auxiliary ball 18 between the second mounting plate 14 and the second mounting plate 14 will contact the valve plate 3, thereby reducing the friction between the valve plate 3 and the valve body 1, and facilitating the opening and closing of the valve. Among them, the square sealing ring 20 and the sealing sleeve 21 are used to ensure the sealing between the valve body 1 and the valve plate 3, the semi-arc sealing gasket 22 is used to ensure the sealing of the front and rear ends of the valve when the valve is closed, and the two sets of rubber sealing rings between the upper cover plate 5 and the valve body 1 are used to ensure the sealing between the upper cover plate 5 and the valve body 1 and between the upper cover plate 5 and the mounting bracket 12.

[0030] This device not only reduces the friction between the valve plate 3 and the valve body 1, but also makes disassembly and rotation simple, facilitating subsequent maintenance.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamp-type knife gate valve comprising a valve body (1), characterized in that: Two sets of auxiliary components (6) are installed inside the valve body (1). The auxiliary components (6) include a first mounting plate (15). Several threaded holes are opened on the valve body (1) and the first mounting plate (15). The first mounting plate (15) is fixedly installed on the valve body (1) by several small bolts (19). A second mounting plate (14) is provided on the side of the first mounting plate (15). Several protruding posts (16) are fixedly installed on the second mounting plate (14). Several concave holes (17) are opened on the first mounting plate (15). An auxiliary ball (18) is installed between the first mounting plate (15) and the second mounting plate (14). A valve plate (3) is slidably installed inside the valve body (1). The auxiliary ball (18) cooperates with the valve plate (3).

2. A clamp-type knife gate valve according to claim 1, characterized in that: A connecting flange is integrally installed on the top of the valve body (1), and an upper cover plate (5) is provided on the top of the valve body (1). The upper cover plate (5) and the connecting flange are fixedly connected by several large bolts and large nuts. An mounting bracket (12) is rotatably installed on the upper cover plate (5).

3. A split body knife gate valve according to claim 2, wherein: A handwheel (13) is fixedly installed on the mounting bracket (12), and a threaded rod (4) is threaded through the handwheel (13). The threaded rod (4) is threadedly connected to the mounting bracket (12), and the threaded rod (4) is fixedly connected to the valve plate (3).

4. A split body knife gate valve as defined in claim 1, wherein: The valve body (1) has a first groove (9), a second groove (10) and a third groove (11). A square sealing ring (20) is installed in the first groove (9), a sealing sleeve (21) is installed in the second groove (10), and a semi-arc sealing gasket (22) is installed in the third groove (11).

5. A split body knife gate valve as defined in claim 2, wherein: Two sets of rubber sealing rings are installed between the upper cover plate (5) and the valve body (1).

6. A split body knife gate valve as defined in claim 1, wherein: The valve body (1) is integrally mounted with mounting flanges (2) on both the front and rear sides, and the mounting flanges (2) are provided with several mounting holes.

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