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Ball valve for enhancing valve base abrasion-proof and temperature-resistant performance and self-compensating sealing surface wear

A technology of ball valves and valve seats, which is applied in the direction of valve devices, cocks including cut-off devices, engine components, etc. It can solve problems such as inability to compensate, insufficient sealing performance and service life of ball valves, and difficulties in actual use.

Inactive Publication Date: 2008-05-28
项石
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional ball valve seat uses a single polytetrafluoroethylene as the sealing surface material (GB12237-1989), and its temperature resistance is only about 120°C. When it is on the pipeline, due to the limitation of the temperature resistance and wear resistance of the currently used sealing surface material, in addition, the sealing part in the ball valve cannot compensate for the wear caused by normal opening and closing. Therefore, The sealing performance and service life of the current ball valve are relatively insufficient, which brings difficulties to practical use

Method used

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  • Ball valve for enhancing valve base abrasion-proof and temperature-resistant performance and self-compensating sealing surface wear
  • Ball valve for enhancing valve base abrasion-proof and temperature-resistant performance and self-compensating sealing surface wear

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Embodiment Construction

[0011] exist figure 1 Among them, the ball valve consists of a main pipe (3), two connecting pipes (1), a ball (5) and a valve stem (8), a gasket (12), a rubber ring (11), and a pressure ring (10). Yes, the two connecting pipes (1), the main pipe (3), and the valve stem sleeve (17) are welded and penetrated. The two connecting pipes (1) are located at both ends of the inner cavity of the main pipe (3), and the handle (13) is along the valve The centerline of the seat post (8) drives the valve stem (8) and the spheroid (5) to rotate to realize the opening and closing of the ball valve.

[0012] exist figure 2 Among them, disc springs (2), valve seat sleeves (4), and valve seats (6) are respectively installed in sequence at the lower ends of the two connecting pipes (1). The ball (5) is installed in the main pipe (3) and slides with the valve seat (6). If the valve seat (6) and the ball (5) are worn, the disc spring (2) pushes the valve seat (6) forward, Implement automatic ...

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Abstract

The invention discloses a ball valve which can increase the heat resistance and abrasion resistance strength of a ball valve base, and can self-compensate the abrasion between the valve base and a ball. The valve base is made from novel composite material, thereby the heat resistance reaches to about 200 DEG C, and the abrasion resistant degree increases one time. Simultaneously, a disk spring assembly is further arranged on the back of the valve body to self-compensate the sealing face of the ball valve, and the sealing property and the service life of the ball valve are increased through the cooperating effect of the abrasion resistant and heat resistant valve base and the disk spring.

Description

Technical field: [0001] The invention relates to a ball valve, in particular to a technical device that enhances the wear-resistant and temperature-resistant performance of a ball valve body and can compensate for the wear of the sealing surface of the ball valve. Background technique: [0002] At present, the traditional ball valve seat uses a single polytetrafluoroethylene as the sealing surface material (GB12237-1989), and its temperature resistance is only about 120°C. When it is on the pipeline, due to the limitation of the temperature resistance and wear resistance of the currently used sealing surface material, in addition, the sealing part in the ball valve cannot compensate for the wear caused by normal opening and closing. Therefore, The sealing performance and service life of the existing ball valves are relatively insufficient, which brings difficulties to practical use. Invention content: [0003] In order to overcome the lack of strength of the sealing surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/20
Inventor 项石
Owner 项石