A lock slag and lock bucket valve with purging and flushing device for coal chemical industry

A flushing device and coal chemical technology, which is applied in the field of ball valves and valves, can solve problems such as flow channel perforation, valve seal failure, and failure, and achieve the effects of improving surface hardness, prolonging service life, and improving wear resistance

Active Publication Date: 2016-03-23
SHANGHAI SHENTONG ENTERPRISE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the existing lock slag and lock hopper valves, when the valve is opened or closed, coal powder and coal slag enter the valve body cavity and are adsorbed on the valve body wall, sphere surface and valve seat sealing surface. Over time, the valve body cavity is blocked and sealed. Surface pull marks or even failure; high pressure differential coal powder will also enter the joint between the bearing sleeve and the valve stem, causing the valve switch to be inflexible or jammed; the hardness of the valve stem journal and the inner ring of the bearing sleeve can only reach about HRC32, which is easy to wear , and the flow path of the valve, including the flow path of the valve body bushing, the flow path of the valve seat and the flow path of the ball, will cause perforation of the flow path due to long-term high-speed scouring, resulting in failure of the valve seal

Method used

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  • A lock slag and lock bucket valve with purging and flushing device for coal chemical industry
  • A lock slag and lock bucket valve with purging and flushing device for coal chemical industry

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Embodiment Construction

[0018] Such as figure 1 , 2 As shown, a lock slag and lock bucket valve with purge and flushing device for coal chemical industry, including valve body 6, ball 7, valve stem 1, valve seat 9, valve body bushing 8, packing 2, packing gland 3. The ball 7 is installed inside the valve body 6, a valve body cavity 10 is formed between the two, the ball 7 and the valve seat 9 form a sealing pair, the valve stem 1 passes through the upper part of the valve body 6, runs through the ball 7, and the lower end extends into the valve body 6 In the lower blind hole 12, the valve stem 1 is welded to the sphere 7, and the shaft journal of the valve stem 1 is equipped with an upper bearing sleeve 5 to cooperate with the valve body 6, and the valve stem 1 is located in the valve body 6. The inner portion of the blind hole 12 is provided with a lower bearing sleeve 11 Cooperate with the valve body 6, the valve stem 1 is located between the upper part of the upper bearing sleeve 5 and the valve ...

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PUM

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Abstract

The invention provides a lock slag and lock hopper valve with purging and flushing devices for the coal chemical industry. A purging device and a cleaning device are fixedly connected on a valve body, a journal of a valve stem and inner rings of upper and lower bearing sleeves are sprayed with WC (wolfram carbide) and Ni60, and the surface of a valve body bushing, the surface of a valve seat and the inner wall of a ball are all sprayed with the WC. Gaps between the bearing sleeves and the valve stem can be purged, a valve body cavity can be cleaned, occurrence of jamming of the valve is avoided, the valve has better wear resistance and corrosion resistance, and service life is prolonged.

Description

technical field [0001] The invention relates to a ball valve, in particular to a slag lock and lock bucket valve with purging and flushing devices for coal chemical industry. Background technique [0002] At present, in the existing lock slag and lock hopper valves, when the valve is opened or closed, coal powder and coal slag enter the valve body cavity and are adsorbed on the valve body wall, sphere surface and valve seat sealing surface. Over time, the valve body cavity is blocked and sealed. Surface pull marks or even failure; high pressure differential coal powder will also enter the joint between the bearing sleeve and the valve stem, causing the valve switch to be inflexible or jammed; the hardness of the valve stem journal and the inner ring of the bearing sleeve can only reach about HRC32, which is easy to wear , and the flow path of the valve, including the flow path of the valve body bushing, the flow path of the valve seat and the flow path of the ball, will caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/08F16K27/06
CPCF16K5/0647F16K5/0657F16K25/005F16K27/067F16K51/00
Inventor 陈志勇
Owner SHANGHAI SHENTONG ENTERPRISE DEV
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