Integrated soft sealing high-temperature ball valve

Abstract

The utility model discloses an integrated soft sealing high-temperature ball valve, which relates to the technical field of high-temperature ball valves and comprises a valve body, the right side and the left side of the valve body are fixedly connected with a right connecting flange and a left connecting flange respectively, the top of the valve body is rotatably connected with a valve cover through a rotating shaft, and a valve rod is arranged on the inner side of the valve cover. According to the integrated soft sealing high-temperature ball valve, compared with a traditional flange ball valve, the integrated soft sealing high-temperature ball valve is additionally provided with an integrated valve body, a high-temperature-resistant fluoroplastic and graphite double filler, an O-shaped ring triple seal and a high-temperature soft sealing valve seat; the surface of the stainless steel ball is nitrided and hardened, a high platform and other structures improve the sealing performance of the valve, and the valve can be suitable for high-temperature working conditions such as heat conduction oil and steam.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature ball valves, and particularly relates to an integrated soft-sealing high-temperature ball valve. Background Art

[0002] The high-temperature ball valve has a metal seal structure, and the sealing form is metal-to-metal seal, and the metal sealing ring can be replaced for metal seal, and the sealing ring of stainless steel plate and graphite composite plate is used for metal seal. The driving forms of the hard-sealing butterfly valve include manual, worm gear drive, pneumatic, etc. in addition to electric. The butterfly plate of the high-temperature ball valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the hard-sealing ball valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is in the fully open state.

[0003] After retrieval, a high-temperature ball valve with convenient disassembly and assembly, with the publication number CN202120534549.4, includes a high-temperature ball valve main body. The high-temperature ball valve main body is of a square structure. Both ends of the high-temperature ball valve main body are fixedly connected with flanges, and both of the flanges are of square structures, and the positions of the two flanges are symmetrical to each other and have the same size. The inner wall of the flange is provided with fixing threads, and the fixing threads are located at one end close to the high-temperature ball valve main body. The surface of the flange is provided with a plurality of fixing screw holes, and the positions of each fixing screw hole are symmetrical to each other. The inner walls of both ends of the high-temperature ball valve main body are provided with internal threads, and the positions of the two internal threads are symmetrical to each other. The surfaces of one end of the two flanges close to the high-temperature ball valve main body are provided with external threads, and the external threads are matched with the internal threads. This high-temperature ball valve with convenient disassembly and assembly is different from the existing technology. The structure is reasonable. The design of the flange can well connect and fix the high-temperature ball valve with the pipeline, which is convenient and fast. The fixing threads are used to fix the pipeline, the fixing screw holes are used to fix the flange, and the cooperation of the internal threads and the external threads can well fix the flange and the high-temperature ball valve main body to prevent the loss of liquid or gas. And the overall split design makes the disassembly and assembly of the high-temperature ball valve more convenient and fast, and is beneficial to the internal cleaning of the high-temperature ball valve. The valve ball can control the flow rate and the on-off, the positioning block can prevent the position of the valve ball from deviating, the control mechanism can control the valve ball, the limiting block can prevent the rotation angle of the operating handle from being too large, and the cooperation of the first clamping plate and the second clamping plate can well limit the rotation angle of the operating handle. The existing high-temperature ball valves use conventional packing and middle-way gaskets, and their sealing performance is poor and cannot meet the sealing requirements of the existing high-temperature ball valves. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated soft-sealing high-temperature ball valve to solve the problem that the existing high-temperature ball valves use conventional packing and middle-way gaskets, and their sealing performance is poor and cannot meet the sealing requirements of the existing high-temperature ball valves.

[0005] To achieve the above object, the utility model provides the following technical solution: an integrated soft-sealed high-temperature ball valve, including a valve body, a right connecting flange and a left connecting flange are respectively fixedly connected to the right side and the left side of the valve body, and a valve cover is rotatably connected to the top of the valve body through a rotating shaft. A valve stem is arranged inside the valve cover. A connecting column is fixedly connected to the bottom end of the valve stem, and a valve core located inside the valve body is fixedly connected to the bottom of the connecting column. A lever is fixedly connected to the top of the valve stem, and a perfluoroether rubber O-ring located inside the top of the valve body is arranged on the side surface of the valve stem. A packing block is arranged on the side surface of the perfluoroether rubber O-ring and located on the side surface of the valve stem. The integrated structure removes the middle gasket of the conventional flange ball valve and changes to a double-sealing structure of an end-sealing gasket and a perfluoroether rubber O-ring for sealing, realizing no leakage of the valve body. The valve seat adopts a high-temperature soft-sealed valve seat, and the packing adopts a triple seal of high-temperature-resistant fluoroplastics, graphite packing and a perfluoroether rubber O-ring. It not only withstands a high temperature of 300 °C, but also has good sealing performance. The surface of the stainless steel ball is nitrided and hardened, making the ball wear-resistant and high-temperature-resistant. The design of this platform can be matched with pneumatic, electric and other automatic control actuators according to the use requirements.

[0006] As a preferred technical solution of the utility model, a locking screw threadedly connected to the top of the valve body is arranged on the side surface of the valve cover, and a nut is threadedly connected to the bottom end of the locking screw.

[0007] As a preferred technical solution of the utility model, the side surface of the connecting column is movably connected to the inner side of the top of the valve body through a bearing ring.

[0008] As a preferred technical solution of the utility model, a through groove is arranged inside the valve core.

[0009] As a preferred technical solution of the utility model, the packing block adopts a combination of high-temperature-resistant fluoroplastics and graphite packing; compared with the traditional flange ball valve, the integrated soft-sealed high-temperature ball valve has newly added an integrated valve body, a triple seal of high-temperature-resistant fluoroplastics, graphite double packing and an O-ring, a high-temperature soft-sealed valve seat, nitriding and hardening of the surface of the stainless steel ball, a high platform and other structures, improving the sealing performance of the valve and enabling the valve to be applicable to high-temperature working conditions such as heat-conducting oil and steam.

[0010] As a preferred technical solution of the utility model, a high-temperature soft-sealed valve seat is arranged inside the valve body and located on the side surface of the valve core.

[0011] As a preferred technical solution of the utility model, the valve body, the left connecting flange and the right connecting flange are all made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model removes the middle gasket of the conventional flange ball valve through an integrated structure and changes it to a double-sealing structure of an end-sealing gasket and a perfluoroether rubber O-ring to achieve leak-free of the valve body. The valve seat adopts a high-temperature soft-sealing valve seat, and the packing adopts a triple-sealing structure of high-temperature-resistant fluoroplastics, graphite packing and perfluoroether rubber O-ring. It not only withstands high temperatures up to 300 °C, but also has good sealing performance. The surface of the stainless steel ball is nitrided and hardened, making the ball wear-resistant and high-temperature-resistant. The design of this platform can be equipped with pneumatic, electric and other automated control actuators according to the usage requirements.

[0014] 2. Compared with the traditional flange ball valve, the integrated soft-sealing high-temperature ball valve of the utility model adds an integrated valve body, a double packing of high-temperature-resistant fluoroplastics and graphite, a triple-sealing structure of O-ring, a high-temperature soft-sealing valve seat, nitriding and hardening of the surface of the stainless steel ball, a high platform and other structures, improving the sealing performance of the valve and enabling the valve to be applicable to high-temperature working conditions such as heat-conducting oil and steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the main structural view of the utility model;

[0016] Figure 2 is the partial main structural view of the utility model;

[0017] Figure 3 is the partial enlarged view at A of the structure of the utility model.

[0018] In the figure: 1. Valve body; 2. Right connecting flange; 3. Left connecting flange; 4. Valve cover; 5. Locking screw; 6. Valve stem; 7. Valve core; 8. Lever; 9. High-temperature soft-sealing valve seat; 10. Packing block; 11. Perfluoroether rubber O-ring; 12. Nut; 13. Through groove; 14. Connecting column; 15. Bearing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, the utility model provides an integrated soft-sealed high-temperature ball valve, which includes a valve body 1. A right connecting flange 2 and a left connecting flange 3 are respectively fixedly connected to the right side and the left side of the valve body 1. The top of the valve body 1 is rotatably connected to a valve cover 4 through a rotating shaft. A valve stem 6 is arranged inside the valve cover 4. A connecting column 14 is fixedly connected to the bottom end of the valve stem 6. The bottom of the connecting column 14 is fixedly connected to a valve core 7 located inside the valve body 1. A lever 8 is fixedly connected to the top of the valve stem 6. And a perfluoroether rubber O-ring 11 is arranged on the side of the valve stem 6 and located inside the top of the valve body 1. A packing block 10 is arranged on the side of the perfluoroether rubber O-ring 11 and located on the side of the valve stem 6. The integrated structure removes the middle gasket of the conventional flange ball valve and changes to a double-sealing structure of an end-sealing gasket and a perfluoroether rubber O-ring 11 for sealing, realizing no leakage of the valve body 1. The valve seat adopts a high-temperature soft-sealing valve seat, and the packing adopts a triple-sealing structure of high-temperature-resistant fluoroplastics, graphite packing and a perfluoroether rubber O-ring 11. It is not only resistant to high temperatures of 300 °C, but also has good sealing performance. The surface of the stainless steel ball is nitrided and hardened, making the ball wear-resistant and high-temperature-resistant. The design of this platform can be matched with pneumatic, electric and other automatic control actuators according to the use requirements.

[0021] In summary, by adopting a high-temperature soft-sealing valve seat for the valve seat, and a triple-sealing structure of high-temperature-resistant fluoroplastics, graphite packing and a perfluoroether rubber O-ring 11 for the packing, it is not only resistant to high temperatures of 300 °C, but also has good sealing performance. The surface of the stainless steel ball is nitrided and hardened, making the ball wear-resistant and high-temperature-resistant. The design of the high platform can be matched with pneumatic, electric and other automatic control actuators according to the use requirements. The integrated soft-sealed high-temperature ball valve has added structures such as an integrated valve body 1, a double packing of high-temperature-resistant fluoroplastics and graphite, a triple-sealing of an O-ring, a high-temperature soft-sealing valve seat, nitriding and hardening of the surface of the stainless steel ball, and a high platform compared with the traditional flange ball valve, improving the sealing performance of the valve, enabling the valve to be applicable to high-temperature working conditions such as heat-conducting oil and steam, and solving the problem that the existing high-temperature ball valve uses conventional packing and a middle gasket, and its sealing performance is poor and cannot meet the sealing requirements of the existing high-temperature ball valve.

[0022] A locking screw 5 is arranged on the side of the valve cover 4 and is threadedly connected to the top of the valve body 1. The bottom end of the locking screw 5 is threadedly connected to a nut 12. The side of the connecting column 14 is movably connected to the inner side of the top of the valve body 1 through a bearing ring 15. A through groove 13 is arranged inside the valve core 7.

[0023] The packing block 10 adopts a combination method of high-temperature-resistant fluoroplastics and graphite packing; the integrated soft-sealed high-temperature ball valve has added structures such as an integrated valve body 1, a double packing of high-temperature-resistant fluoroplastics and graphite, a triple-sealing of an O-ring, a high-temperature soft-sealing valve seat, nitriding and hardening of the surface of the stainless steel ball, and a high platform compared with the traditional flange ball valve, improving the sealing performance of the valve, enabling the valve to be applicable to high-temperature working conditions such as heat-conducting oil and steam. A high-temperature soft-sealing valve seat 9 is arranged on the inner side of the valve body 1 and located on the side of the valve core 7. The valve body 1, the left connecting flange 3 and the right connecting flange 2 are all made of stainless steel.

[0024] In specific use, first of all, the integral structure removes the middle gasket of the conventional flange ball valve and changes to a double-sealing structure of an end-sealing gasket and a perfluoroether rubber O-ring 11 for sealing, achieving no leakage of the valve body 1. The valve seat adopts a high-temperature soft-sealing valve seat, and the packing adopts a triple-sealing structure of high-temperature-resistant fluoroplastics, graphite packing and a perfluoroether rubber O-ring 11. It not only withstands a high temperature of 300 °C, but also has good sealing performance. The surface of the stainless steel ball is nitrided and hardened, making the ball wear-resistant and high-temperature-resistant. The high-platform design can be matched with pneumatic, electric and other automatic control actuators according to the use requirements. The integral soft-sealing high-temperature ball valve has added an integral valve body 1, a double packing of high-temperature-resistant fluoroplastics and graphite, a triple-sealing of O-rings, a high-temperature soft-sealing valve seat, a nitrided and hardened surface of the stainless steel ball, a high platform and other structures compared with the traditional flange ball valve, improving the sealing performance of the valve and enabling the valve to be applicable to high-temperature working conditions such as heat transfer oil and steam.

[0025] 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 integrated soft-sealing high-temperature ball valve, comprising a valve body (1), characterized in that: On the right side and the left side of the valve body (1), a right connecting flange (2) and a left connecting flange (3) are fixedly connected respectively. And the top of the valve body (1) is rotatably connected with a valve cover (4) through a rotating shaft. Inside the valve cover (4), a valve rod (6) is provided. At the bottom end of the valve rod (6), a connecting column (14) is fixedly connected. At the bottom of the connecting column (14), a valve core (7) located inside the valve body (1) is fixedly connected. At the top of the valve rod (6), a lever (8) is fixedly connected. And on the side of the valve rod (6), a perfluoroether rubber O-ring (11) located inside the top of the valve body (1) is provided. On the side of the perfluoroether rubber O-ring (11), a packing block (10) located on the side of the valve rod (6) is provided.

2. The one-piece soft-sealed high-temperature ball valve according to claim 1, characterized in that: On the side of the valve cover (4), a locking screw rod (5) threadedly connected to the top of the valve body (1) is provided. At the bottom end of the locking screw rod (5), a nut (12) is threadedly connected.

3. An integrated soft-sealing high-temperature ball valve according to claim 1, characterized in that: On the side of the connecting column (14), it is movably connected to the inside of the top of the valve body (1) through a bearing ring (15).

4. The one-piece soft-sealing high-temperature ball valve according to claim 1, characterized in that: Inside the valve core (7), a through groove (13) is provided.

5. An integrated soft-sealing high-temperature ball valve according to claim 1, wherein: The packing block (10) adopts a combination of high-temperature resistant fluoroplastics and graphite packing.

6. The one-piece soft-sealed high-temperature ball valve according to claim 1, characterized in that: Inside the valve body (1), a high-temperature resistant soft seal valve seat (9) located on the side of the valve core (7) is provided.

7. An integrated soft-sealing high-temperature ball valve according to claim 1, characterized in that: The valve body (1), the left connecting flange (3) and the right connecting flange (2) are all made of stainless steel.

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