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Hard seal lift gate valve and its control method

A control method and lifting technology, applied in sliding valves, valve details, valve devices, etc., can solve the problems of poor sealing, easy wear, large opening and closing force, etc., to improve service life, large flow coefficient, and open and close space. small effect

Active Publication Date: 2017-12-01
浙江福瑞科流控机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has poor sealing performance, large opening and closing force, and is easy to wear.

Method used

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  • Hard seal lift gate valve and its control method

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Effect test

Embodiment Construction

[0016] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] like figure 1 As shown, a hard seal lift gate valve includes valve body (1), valve seat (2), valve plug (3), valve stem (4), gasket (5), valve cover (6), screw Column (7), pin (8), packing gland (9), swing bolt (10), packing plate (11), swing nut (12), hand wheel (13), hand wheel washer (14), Nut (15), filler (16), valve stem nut (17); valve seat 2 is placed in valve body 1, valve plug 3 and valve stem 4 are connected by T-shaped hinge, and valve stem nut 17 is connected with T-shaped thread The valve stem 4 is connected, the gasket 5 is placed on the upper end of the valve body 1, the valve cover 6 is covered, and the valve body 1 is connected with the stud 7. Put the filler 16 into the valve cover 6, the packing gland 9 is set on the valve stem 4, the upper cover is the packing pressure plate 11, and is connected with the valve cove...

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PUM

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Abstract

The invention relates to a hard sealing lifting type brake plug valve and a control method thereof. The hard sealing lifting type brake plug valve comprises a valve body, a valve seat, a valve plug, a valve rod, a gasket, a valve deck, studs, pins, a packing bushing, swing bolts, a packing pressing plate, swing bolts, a hand wheel, a hand wheel gasket, a nut, packing and a valve rod nut. The valve body and the valve deck are connected through the studs. The valve deck and the packing pressing plate are connected through the swing bolts. The valve rod is connected with the valve plug through a head flat-square part. A full-bore partial-rotation structure is adopted, the flow coefficient is large, and the opening and closing space is small. The metal-sealing, fireproof, anti-static and blowout prevention valve rod structure is adopted, and the hard sealing lifting type brake plug valve is suitable for high-temperature-resistant, high-pressure-resistant and strong-corrosion-resistant working conditions and is wide in application range. The packing structure can be replaced on line, and online maintenance is convenient. During operation, a sealing pair is disengaged, friction between opening and closing torque and the sealing pair is reduced, and the service life of the valve is prolonged.

Description

technical field [0001] The invention relates to a hard-sealed lift-type gate valve and a control method thereof, which are particularly suitable for high-temperature, high-pressure, and strong-corrosion working conditions. Background technique [0002] The gate plug valve is a kind of partial rotary gate, which is designed by combining the advantages of gate valve, ball valve and plug valve. Ordinary gate valves drive the gate through the lifting of the valve stem to realize the on-off of the pipeline. The gate valve has small flow resistance, saves effort when opening and closing, and has a simple shape. However, erosion and scratches are easily caused between the sealing surfaces of the gate valve, and maintenance is difficult. The overall size is large, it takes a certain amount of time to open, and the opening and closing time is long. Ordinary ball valves are simple in structure, reliable in sealing, convenient in maintenance, and open and close quickly. When fully o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/22F16K3/30F16K31/60
CPCF16K3/22F16K3/30F16K31/60
Inventor 郑建军高飞李国华邵一忠李泽玉
Owner 浙江福瑞科流控机械有限公司