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Combination sealing and fixing type ball valve

A combined sealing and fixed technology, which is applied to valve details, valve devices, and valve housing structures, can solve the problems of soft-sealed fixed ball valves such as easy wear, unsatisfactory sealing performance, and easy damage to sealing devices, and achieve long service life. , Eliminate the effect that the switch is not in place and the valve is stuck

Inactive Publication Date: 2009-02-18
YUEYANG DONGFANG AUTOMATIC CONTROL ENG EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the sealing devices of domestic and imported fixed ball valves are generally soft seals or hard seals. Soft-sealed fixed ball valves are easy to wear during use, and their service life is not high. In the use environment containing solid particles and impurities, the sealing device is extremely It is easy to be damaged, and although the sealing device of the hard-sealed fixed ball valve has certain wear resistance and erosion resistance, its sealing performance is not ideal

Method used

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  • Combination sealing and fixing type ball valve
  • Combination sealing and fixing type ball valve

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Embodiment Construction

[0012] As can be seen from Figures 1 and 2, the present invention consists of a valve body, a valve core, an opening and closing shaft and a sealing valve seat;

[0013] The valve body is set as an upper valve body 1 and a lower valve body 5, the cavity between the upper and lower valve bodies is provided with a spherical valve core 2 and a sealing valve seat, and the opening and closing shafts are arranged on both sides of the valve body;

[0014] The valve core 2 is a single-channel fixed structure, and the opening and closing shaft passes through the valve body and is arranged on both sides of the valve core 2;

[0015] The sealing valve seat is composed of a hard seal and a soft seal, wherein the hard seal is the first seal, which is used to block and remove granular media and protect the second soft seal.

[0016] The sealing valve seat of the present invention includes a hard sealing valve seat body 4, a soft sealing valve seat body 3, a flat spring 8, a support ring 9, ...

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Abstract

The invention relates to a valve, in particular to a combination seal fixed ball valve after the seal of the ball valve is improved. The invention comprises a valve body, a valve core, an open-close shaft and a seal valve base; the invention is characterized in that the valve body is composed of an upper valve body and a lower valve body; the ball valve core and the seal valve base are arranged in the hollow cavity between the upper valve body and the lower valve body; the open-close shaft is arranged on both sides of the valve body; the valve core is the single channel fixation structure; the open-close shaft is threaded through the valve body to be arranged on both sides of the valve core; the seal valve base is the combination of hard seal and flexible seal; wherein, the hard seal is the first seal and used for retaining and removing the particle medium, and protecting the second flexible seal. The combination seal fixed ball valve enables the seal level to reach zero leakage and enables the valve to be applicable to a variety of mediums and avoid valve deadlock, inadequate opening and closing situations so that the service life of the combination seal fixed ball valve can reach more than 0.2 million times.

Description

technical field [0001] The invention relates to a valve, in particular to a combined sealing fixed ball valve with improved sealing of the ball valve. Background technique [0002] At present, the sealing devices of domestic and imported fixed ball valves are generally soft seals or hard seals. Soft-sealed fixed ball valves are easy to wear during use, and their service life is not high. In the use environment containing solid particles and impurities, the sealing device is extremely It is easily damaged, and although the sealing device of the hard-sealed fixed ball valve has certain wear resistance and erosion resistance, its sealing performance is not ideal. Contents of the invention [0003] The purpose of the present invention is to improve and innovate on the shortcomings and problems existing in the background technology, to provide a simple structure, low cost, suitable for various special working environments, especially working environments containing solid partic...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K27/06F16K25/00
Inventor 吴军
Owner YUEYANG DONGFANG AUTOMATIC CONTROL ENG EQUIP
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