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CN-224214717-U - Butterfly valve sealing surface auxiliary protection device

CN224214717UCN 224214717 UCN224214717 UCN 224214717UCN-224214717-U

Abstract

The utility model discloses an auxiliary protection device for a sealing surface of a butterfly valve, which comprises a butterfly valve main body, wherein two protective sleeve assemblies are fixedly connected to the inner wall of the butterfly valve main body, a buffer piece is fixedly connected to the outer surface of each protective sleeve assembly, each protective sleeve assembly comprises a half-ring sleeve arranged in the butterfly valve main body, and a main protective sleeve and an auxiliary protective sleeve are respectively and fixedly connected to the outer surfaces of the half-ring sleeves. The main lag and the auxiliary lag of the lag component can directly block the scouring and abrasion of the medium to the sealing surface of the butterfly valve, so that the scraping of particle impurities to the sealing surface is reduced, the buffer spring in the buffer piece can absorb the stress generated by the fluctuation and impact of the fluid pressure in the pipeline, the fatigue damage to the sealing surface is reduced, the service life of the butterfly valve is prolonged, the sealing gap can be filled by the sealing rubber ring on the outer surface of the auxiliary lag, the sealing effect of the butterfly valve is enhanced, the medium leakage is effectively prevented, and the sealing performance can be enhanced.

Inventors

  • ZHENG JIAZHI
  • XU SHAOXIA

Assignees

  • 天津市富尔泽阀门有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (6)

  1. 1. The auxiliary protection device for the sealing surface of the butterfly valve is characterized by comprising a butterfly valve main body (1), wherein two protection sleeve assemblies (2) are fixedly connected to the inner wall of the butterfly valve main body (1), a buffer piece (8) is fixedly connected to the outer surface of each protection sleeve assembly (2), each protection sleeve assembly (2) comprises a semi-ring sleeve (9) arranged in the butterfly valve main body (1), and a main protection sleeve (5) and an auxiliary protection sleeve (6) are fixedly connected to the outer surface of each semi-ring sleeve (9) respectively.
  2. 2. The auxiliary protection device for the sealing surface of the butterfly valve is characterized in that a plurality of reinforcing plates (7) are fixedly connected to the outer surface of the main protection sleeve (5) and the outer surface of the auxiliary protection sleeve (6) together.
  3. 3. The auxiliary protection device for the sealing surface of the butterfly valve is characterized in that the outer surface of each auxiliary protection sleeve (6) is fixedly connected with a sealing rubber ring (10).
  4. 4. The auxiliary protection device for the sealing surface of the butterfly valve is characterized in that the inner wall of the butterfly valve body (1) is fixedly connected with a plurality of mounting plates (3), and mounting nails (4) are arranged on the outer surface of each mounting plate (3).
  5. 5. The auxiliary protection device for the sealing surface of the butterfly valve according to claim 1, wherein the buffer member (8) comprises a buffer sleeve (801) fixedly arranged on the outer surface of the semi-ring sleeve (9), and a plurality of buffer springs (802) are fixedly connected to the inner wall of the buffer sleeve (801).
  6. 6. The auxiliary protection device for the sealing surface of the butterfly valve is characterized in that the outer surface of the main protection sleeve (5), the outer surface of the auxiliary protection sleeve (6) and the outer surface of the semi-ring sleeve (9) are provided with anti-corrosion coatings.

Description

Butterfly valve sealing surface auxiliary protection device Technical Field The utility model relates to the field of valve auxiliary equipment, in particular to an auxiliary protection device for a sealing surface of a butterfly valve. Background The valve is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, diverting or overflowing, relieving pressure and the like, is used for the fluid control system, and is characterized in that a sealing surface of a ‌ butterfly valve is positioned between a butterfly plate and a valve seat, when the butterfly valve is closed, the butterfly plate rotates around a shaft to be in close contact with the valve seat, so that sealing is realized, and the position and design of the sealing surface have an important influence on the sealing performance of the butterfly valve ‌. The butterfly valve is used as an important control part, the sealing performance of the sealing surface of the butterfly valve directly influences the sealing performance, the reliability and the service life of the valve, however, the conventional butterfly valve faces a plurality of problems in the actual use process, the sealing surface is easily eroded and worn by media in the frequent opening and closing processes of the butterfly valve, especially when the media containing granular impurities are conveyed, the sealing surface can be scraped by the particles, so that scratches and pits are formed on the surface, the sealing performance is further reduced, and the media leakage is caused. Disclosure of utility model The utility model aims to provide an auxiliary protection device for a sealing surface of a butterfly valve, which aims to solve the problems in the background art. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a butterfly valve sealing face auxiliary protection device, includes the butterfly valve main part, the inner wall fixedly connected with of butterfly valve main part two lag subassemblies, every the equal fixedly connected with bolster of surface of lag subassembly, the lag subassembly is including setting up in the inside semi-ring cover of butterfly valve main part, the surface of semi-ring cover is fixedly connected with owner lag and vice lag respectively. In a further embodiment, a plurality of reinforcing plates are fixedly connected to the outer surface of the primary protective sleeve and the outer surface of the secondary protective sleeve together. In a further embodiment, a sealing rubber ring is fixedly connected to the outer surface of each auxiliary protecting sleeve. In a further embodiment, the inner wall of the butterfly valve body is fixedly connected with a plurality of mounting plates, and the outer surface of each mounting plate is provided with a mounting nail. In a further embodiment, the buffer member comprises a buffer sleeve fixedly mounted on the outer surface of the semi-ring sleeve, and a plurality of buffer springs are fixedly connected to the inner wall of the buffer sleeve. In a further embodiment, the outer surface of the primary and secondary protective sleeves and the outer surface of the half sleeve are provided with an anti-corrosion coating. Compared with the prior art, the utility model has the beneficial effects that: The main lag and the auxiliary lag of the lag component can directly block the flushing and abrasion of the medium to the sealing surface of the butterfly valve, so that the scraping of particle impurities to the sealing surface is reduced, the buffer spring in the buffer component can absorb the stress generated by the fluctuation and impact of the fluid pressure in the pipeline, the fatigue damage to the sealing surface is reduced, the service life of the butterfly valve is prolonged, the sealing gap can be filled by the sealing rubber ring on the outer surface of the auxiliary lag, the sealing effect of the butterfly valve is enhanced, the medium leakage is effectively prevented, the sealing performance can be enhanced, the corrosion-resistant coatings on the surfaces of the main lag, the auxiliary lag and the semi-ring sleeve can resist the corrosion of corrosive medium to the sealing surface, and the integrity of the sealing structure is maintained. Drawings FIG. 1 is a schematic perspective view of an auxiliary protection device for a sealing surface of a butterfly valve; FIG. 2 is a schematic view of a part of the structure of a protective sleeve assembly in an auxiliary protection device for a butterfly valve sealing surface; FIG. 3 is a schematic diagram of the internal structure of a buffer in the auxiliary protection device for the sealing surface of the butterfly valve; FIG. 4 is a schematic structural view of a protective sleeve assembly and a buffer in an auxiliary protection device for a butterfly valve sealing surface. 1, A butter