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a valve

A valve and valve body technology, applied in the field of high-flow cut-off valves, can solve the problems of unreliable sealing and pressure keeping, poor impact resistance, and difficult manufacturing, and achieve the effects of no leakage, long service life and fast response.

Active Publication Date: 2019-02-19
襄阳博亚精工机器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the design and invention concept of the side valve is advanced, it realizes the characteristics of small force resistance and quick response when opening and closing, but in the production experiment, there are difficulties in manufacturing, short life, unreliable sealing and pressure maintaining, and poor impact resistance. Wait for a series of questions

Method used

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Embodiment Construction

[0013] Such as figure 1 , figure 2 As shown, the valve body 8 of the present invention is provided with a spool, and the spool includes a valve stem 3, a valve disc 7 and a valve disc 9, the hand wheel 1 is connected with the valve stem 3, and is locked with a lock nut 2, and the valve The valve disc 7 and the valve disc 9 are connected as a whole by screws 22 and sealed with a copper gasket 21. The bottom of the valve stem 3 is equipped with a push rod 10, and the valve stem 3 is provided with a diversion hole 26; the valve cover 6 is fixed on the valve body 8 At the upper end, the valve stem 3 and the bonnet 6 are threadedly connected. A gasket 25 is installed between the valve body 8 and the bonnet 6. The upper part of the bonnet 6 is connected with the packing gland 4 and the bonnet 6 through the slip bolt 27 and the nut 28. There is a graphite packing 5 inside, and the packing gland 4 presses the graphite packing 5 into the valve cover 6; the valve body 8, the valve cov...

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Abstract

The invention relates to a valve which is mainly used for conveying fluid. A valve core is arranged in a valve body, the valve core comprises a valve stem, a valve clack and a valve disc, the valve clack and the valve disc are connected into one body, the bottom of the valve stem is provided with a push rod, and the valve stem is provided with a diversion hole; the valve cover is fixed on the upper end of the valve body, the valve stem is in threaded connection with the valve cover, and the upper part of the valve cover is connected with a packing gland; the valve body, the valve cover and the valve core are combined together to divide the inner cavity of the valve body into an inlet cavity, a balance cavity and an outlet cavity, and the cross-sectional area of the balance cavity is the same as that of a primary seal position; the valve disc and the central flange of the valve body form primary seal; the shaft shoulder on the lower part of the valve stem is sealed in the connector of the valve clack and the valve disc, and the valve stem can rotate in the valve clack; a one-way valve body is installed in the valve disc, a one-way valve core, a spring, a supporting ring and a check ring for hole are sequentially installed in the one-way valve body from top to bottom, and auxiliary seal is formed between the one-way valve core and the one-way valve body. The valve is small in open-close torque, light in weight, high in intensity, long in service life, fast in response and low in noise, and is without leakage.

Description

technical field [0001] The invention relates to the technical field of fluid delivery, in particular to a large-flow cut-off valve used in medium-pressure and high-pressure situations. Background technique [0002] For a long time, the shut-off valve is mainly used to cut off or connect the medium in the pipeline, mainly including gate valve, globe valve, ball valve, plug valve, butterfly valve, etc. The common feature of these valves is that when the pressure in the pipeline increases, the valve opens, The greater the closing force, the more cumbersome, bulky and complex the actuator. [0003] At the same time, the side valves commonly used in deep sea valves are used in seawater and freshwater pipeline systems, mainly for the outer surface cut-off valves on both sides of the ship above the waterline. Although the design and invention concept of the side valve is advanced, it realizes the characteristics of small force resistance and quick response when opening and closing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/02F16K31/383
CPCF16K1/02F16K31/383
Inventor 王勇李文喜赵斌峰陈亮
Owner 襄阳博亚精工机器有限公司