Pneumatic hard sealing ball valve

Abstract

The utility model discloses a pneumatic hard sealing ball valve, which relates to the field of ball valves, solves the problems that the existing press-fitting operation is complicated and the sealing effect is limited, and adopts the following scheme that the pneumatic hard sealing ball valve comprises a ball valve body, valve pipes are arranged at the inner end and the outer end of the ball valve body, and the outer ends of the valve pipes are connected with through pipes; an outer pressing disc is arranged at the end of the through pipe, an inner pressing disc matched with the outer pressing disc in specification is arranged at the end of the valve pipe, arc pressing blocks opposite to each other in position are assembled on the inner pressing disc, clamping parts located on the inner sides of the arc pressing blocks are arranged on the top side and the bottom side of the outer pressing disc, and the inner pressing disc and the outer pressing disc are assembled through bolt pieces. According to the pneumatic hard sealing ball valve, through arrangement of all structures between the ball valve body and the through pipe, rotation and arrangement of the two sets of bolt pieces, the press-fitting effect can be guaranteed, meanwhile, in the press-fitting process, the sealing gaskets are extruded through continuous press fit between the ball valve body and the through pipe, the sealing gaskets are deformed and filled in gaps between the sealing gaskets, and the packaging effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a pneumatic hard-seal ball valve. Background Technology

[0002] Hard-seal ball valve, the ball and seat are paired and ground, and all sealing areas of the entire sealing surface of the ball valve are precision ground. It is suitable for high temperature and high pressure water, steam, oil, coal, fiber, viscous and corrosive media, as well as media containing particles.

[0003] A search revealed that patent application number 202421128595.4 discloses a pneumatic hard-seal ball valve, relating to the field of hard-seal ball valve technology. The valve body includes a valve body with an inlet pipe installed at its inlet. A connecting chamber is installed on the outer wall of the inlet pipe. The connecting chamber communicates with the inlet pipe and has a sliding plate slidably connected within it. A sealing plate is fixedly connected to one side of the sliding plate. By setting up the connecting chamber and the sliding plate, a perforated plate is installed on the sliding plate using a stepped groove. The perforated plate traps solids in the fluid and collects them in the stepped groove. The connecting chamber is used to house the sliding plate, allowing it to detach from the inlet pipe and lose its filtering function, ensuring smooth fluid delivery by the valve body. Simultaneously, the connecting chamber can remove the solids trapped on the sliding plate for testing.

[0004] In industrial fluid control systems, sealed ball valves are key components that achieve the detection and control of internal fluids through the precise cooperation of components such as the valve core and valve seat. However, current mainstream sealed ball valves still use traditional bolt assembly methods for connection and assembly. Specifically, the connection between the valve body and pipelines or other equipment typically requires 6 to 8 bolts for fastening. During assembly, not only are the bolt hole positions repeatedly aligned, but also specific tools are used to tighten them multiple times in a diagonal sequence to ensure uniform sealing. This operation mode is not only cumbersome and time-consuming, greatly reducing engineering installation efficiency, but also results in a large installation space requirement due to the multi-bolt structure, making it difficult to operate in confined working conditions. Furthermore, after long-term use, the bolts are prone to loosening and corrosion, posing a risk of sealing failure.

[0005] Therefore, we propose a pneumatic hard-seal ball valve. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a pneumatic hard-seal ball valve, which solves the problems of cumbersome press-fitting operations and limited sealing effect.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a pneumatic hard-seal ball valve, comprising a ball valve body and a regulating valve on its top for regulation, wherein valve pipes are installed at the inner and outer ends of the ball valve body, and a through pipe is connected to the outer end of the valve pipe;

[0008] An outer pressure plate is provided at the end of the through pipe, and an inner pressure plate with a specification compatible with the outer pressure plate is provided at the end of the valve pipe. An arc pressure block with a corresponding position is mounted on the inner pressure plate. The top and bottom sides of the outer pressure plate are provided with a clamping part located inside the arc pressure block. The inner pressure plate and the outer pressure plate are assembled to each other by bolts, and a sealing gasket is press-fitted between the inner pressure plate and the outer pressure plate.

[0009] As a preferred embodiment of this utility model, the inner pressure plate has internal screw holes with opposite positions on both sides, and external screw holes with opposite positions on both sides. The external screw holes and the internal screw holes are assembled by bolts, and a nut seat is threaded on the bolt.

[0010] The inclusion of both internal and external screw holes facilitates the pressing of the inner and outer pressure plates by rotating the bolts, and enables efficient pressing of the sealing gasket between them, ensuring a good seal.

[0011] As a preferred embodiment of this utility model, the clamping part on the outer pressure plate is an arc-shaped part, and the top side edge of the clamping part is provided with an inwardly tangential guide surface, and the two sets of clamping parts on the outer pressure plate are wedgeed on the inner side of the arc pressure block on the inner pressure plate.

[0012] The guide surface is designed to facilitate the insertion of the arc-pressed block from the side during press-fitting, making the operation simple and efficient, and suitable for convenient connection between the ball valve body and the pipe.

[0013] As a preferred embodiment of this utility model, the arc pressing block is an arc-shaped L-shaped block, and the inner edge of the inner side of the arc pressing block has a built-in mounting part that is adapted to the specifications of the mounting part.

[0014] The guide surfaces on the wedge and mounting parts facilitate the insertion of the external pressure plate into the space between the upper and lower sets of arc pressure blocks from the side, making the operation simple and the assembly efficiency high.

[0015] As a preferred embodiment of this utility model, an annular groove is provided in the middle of the sealing gasket between the inner pressure plate and the outer pressure plate, and the shape of the sealing gasket is adapted to the specifications of the outer pressure plate and the inner pressure plate.

[0016] The sealing gasket, by virtue of its own compressive deformation, can fill the space between the inner and outer pressure plates, further ensuring the sealing performance during press-fitting.

[0017] This utility model provides a pneumatic hard-seal ball valve. It has the following advantages:

[0018] This pneumatic hard-seal ball valve, through the arrangement of various structures between the ball valve body and the through pipe, and the use of rotation and two sets of bolts, ensures a press-fit effect. During the press-fit process, the continuous pressing and squeezing of the sealing gasket deforms it and fills the gaps between them, ensuring a sealing effect. In addition, the rotation and the two sets of bolts allow for the press-fitting of the inner and outer pressure plates, ensuring the compression and press-fitting effect of the sealing gasket. This solves the problems of cumbersome press-fitting operations and limited sealing effect in existing systems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a side view of the ball valve body of this utility model.

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0022] Figure 4 This is a schematic diagram of the structure of the pipe end of this utility model.

[0023] In the diagram: 1. Ball valve body; 2. Control valve; 3. Valve pipe; 4. Through pipe; 5. Inner pressure plate; 6. Arc pressure block; 7. Internal screw hole; 8. Bolt; 9. Outer pressure plate; 10. External screw hole; 11. Guide surface; 12. Mounting part. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4This utility model provides a technical solution: a pneumatic hard-seal ball valve, including a ball valve body 1 and a regulating valve 2 on its top for regulation. A valve pipe 3 is installed at the inner and outer ends of the ball valve body 1, and a through pipe 4 is connected to the outer end of the valve pipe 3. An outer pressure plate 9 is provided at the end of the through pipe 4, and an inner pressure plate 5 with a specification adapted to the outer pressure plate 9 is provided at the end of the valve pipe 3. An arc pressure block 6 with a corresponding position is mounted on the inner pressure plate 5. A clamping part 12 located inside the arc pressure block 6 is provided on the top and bottom sides of the outer pressure plate 9. The inner pressure plate 5 and the outer pressure plate 9 are assembled to each other by bolts 8, and a sealing gasket is pressed between the inner pressure plate 5 and the outer pressure plate 9.

[0026] The pneumatic hard-seal ball valve, through the arrangement of various structures between the ball valve body 1 and the through pipe 4, and through the rotation and the setting of two sets of bolts 8, can ensure the pressing effect. At the same time, during the pressing process, the continuous pressing and squeezing of the sealing gasket between them deforms and fills the gaps between them, ensuring the sealing effect. In addition, the rotation and the setting of two sets of bolts 8 can be used to press the inner pressure plate 5 and the outer pressure plate 9, ensuring the squeezing and pressing effect of the sealing gasket, thus solving the problem of the existing pressing operation being cumbersome and the sealing effect being limited.

[0027] Example 2:

[0028] The inner pressure plate 5 has internal screw holes 7 with opposite positions on both sides, and external screw holes 10 with opposite positions on both sides. The external screw holes 10 and the internal screw holes 7 are assembled by bolts 8, and the bolts 8 are threaded with nuts. The internal screw holes 7 and the external screw holes 10 are designed to facilitate the pressing of the inner pressure plate 5 and the outer pressure plate 9 by rotating the bolts 8, and to efficiently press the sealing gasket between them to ensure a sealing effect.

[0029] The clamping part 12 on the outer pressure plate 9 is an arc-shaped part. The top edge of the clamping part 12 is provided with an inwardly tangential guide surface 11. The two sets of clamping parts 12 on the outer pressure plate 9 are wedged into the inner side of the arc pressure block 6 on the inner pressure plate 5. The guide surface 11 is provided to facilitate wedging into the inner side of the arc pressure block 6 from the side during pressing. The operation is simple and the working efficiency is high. It is suitable for convenient connection between the ball valve body 1 and the through pipe 4.

[0030] The arc-shaped pressure block 6 is an arc-shaped L-shaped block. The inner edge of the inner side of the arc-shaped pressure block 6 has a built-in wedge that matches the specifications of the mounting part 12. The wedge and the guide surface 11 on the mounting part 12 facilitate the screwing of the outer pressure plate 9 between the upper and lower sets of arc-shaped pressure blocks 6 from the side, making the operation simple and the assembly efficiency high.

[0031] An annular groove is provided in the middle of the sealing gasket between the inner pressure plate 5 and the outer pressure plate 9. The shape of the sealing gasket is adapted to the specifications of the outer pressure plate 9 and the inner pressure plate 5. The sealing gasket can fill the space between the inner pressure plate 5 and the outer pressure plate 9 by utilizing its own pressure-deformable design, thereby further ensuring the sealing performance during press-fit connection.

[0032] The working principle and usage process of this utility model are as follows: When the device is required to work, the sealing gasket is placed on the outside of the inner pressure plate 5. During connection, the outer pressure plate 9 is pressed against the outside of the inner pressure plate 5. Then, the outer pressure plate 9 is rotated so that the clamping part 12 on it is wedged into the inside of the arc pressure block 6, and the external screw hole 10 is aligned with the internal screw hole 7. Finally, the bolt 8 is screwed in, and the inner pressure plate 5 and the outer pressure plate 9 are pressed together with the rear nut to efficiently press the sealing gasket, deform the gasket and fill the gap between them, ensuring the pressing and sealing effect. The operation is simple and the connection efficiency is high.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic hard-seal ball valve, characterized in that: It includes a ball valve body (1) and a regulating valve (2) on its top for regulation. A valve pipe (3) is installed at the inner and outer ends of the ball valve body (1), and a through pipe (4) is connected to the outer end of the valve pipe (3). An outer pressure plate (9) is provided at the end of the through pipe (4), and an inner pressure plate (5) with the same specifications as the outer pressure plate (9) is provided at the end of the valve pipe (3). An arc pressure block (6) with opposite positions is mounted on the inner pressure plate (5). A clamping part (12) located inside the arc pressure block (6) is provided on the top and bottom sides of the outer pressure plate (9). The inner pressure plate (5) and the outer pressure plate (9) are assembled to each other by bolts (8), and a sealing gasket is pressed between the inner pressure plate (5) and the outer pressure plate (9).

2. The pneumatic hard-seal ball valve according to claim 1, characterized in that: The inner pressure plate (5) has internal screw holes (7) with opposite positions on both sides, and external screw holes (10) with opposite positions on both sides. The external screw holes (10) and the internal screw holes (7) are assembled by bolts (8), and a nut seat is threaded on the bolts (8).

3. A pneumatic hard-seal ball valve according to claim 1, characterized in that: The clamping part (12) on the outer pressure plate (9) is an arc-shaped part. The top edge of the clamping part (12) is provided with an inwardly tangential guide surface (11), and the two sets of clamping parts (12) on the outer pressure plate (9) are wedgeed on the inner side of the arc pressure block (6) on the inner pressure plate (5).

4. A pneumatic hard-seal ball valve according to claim 1, characterized in that: The arc-shaped block (6) is an arc-shaped L-shaped block, and the inner edge of the arc-shaped block (6) has a built-in wedge that is compatible with the specifications of the mounting part (12).

5. A pneumatic hard-seal ball valve according to claim 1, characterized in that: The sealing gasket between the inner pressure plate (5) and the outer pressure plate (9) has an annular groove in the middle, and the shape of the sealing gasket is adapted to the specifications of the outer pressure plate (9) and the inner pressure plate (5).

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