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Pneumatic or hydraulic single-seat regulating valve

A control valve, hydraulic technology, applied in the field of control valves, can solve the problems of valve stuck, damaged sealing surface, easy to block, etc., to achieve the effect of preventing damage to the sealing pair, preventing blockage, and long service life

Inactive Publication Date: 2020-01-03
永嘉企达知识产权咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For traditional control valves, if the medium used contains solid particles, when the opening of the control valve is relatively small (the distance between the sealing surface of the disc and the sealing surface of the valve seat is relatively close), the solid particles are easy to block the sealing pair, causing The valve is stuck and the sealing surface is damaged

Method used

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  • Pneumatic or hydraulic single-seat regulating valve
  • Pneumatic or hydraulic single-seat regulating valve
  • Pneumatic or hydraulic single-seat regulating valve

Examples

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Embodiment Construction

[0013] Accompanying drawing has shown structure of the present invention, further illustrates its relevant details below again in conjunction with accompanying drawing. The pneumatic or hydraulic single-seat regulating valve includes a valve body 1, a valve cover 10 and a valve stem 11. The valve body 1 is provided with an inlet passage 33 and an outlet passage 16, and the inlet passage 33 and the outlet passage 16 pass through a central flow. The valve seat 23 and the valve disc 8 forming a sealing pair are arranged at the center channel 22, and the valve disc 8 is driven by the valve stem 11 to move up and down. The first cavity, the second cavity, the third cavity and the fourth cavity are provided in sequence to the outside; the valve seat 23 can move up and down in the first cavity, and the upper end of the valve seat 23 can move out of the first cavity. A cavity, the lower end of the valve seat 23 is provided with a step 6, and the step 6 divides the first cavity into an...

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PUM

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Abstract

The invention discloses a pneumatic or hydraulic single-seat regulating valve which comprises a valve body, a valve cover and a valve stem. The valve body is internally provided with an inlet channeland an outlet channel, and the inlet channel and the outlet channel are in communication through a central flow channel. The pneumatic or hydraulic single-seat regulating valve is characterized in that a first cavity, a second cavity, a third cavity and a fourth cavity are arranged on the positions, corresponding to the outer periphery of the central flow channel, on the valve body in order from inside to outside; a valve seat is arranged in the first cavity in a manner of being capable of moving up and down, the upper end of the valve seat movably extends out of the first cavity, the lower end of the valve seat is provided with a step, the step separates the first cavity into an upper piston cavity and a lower piston cavity which are closed, the upper piston cavity communicates with the inlet channel, and the lower piston cavity communicates with the outlet channel; a scraping sleeve is rotationally arranged in the second cavity, an inner cavity is arranged in the scraping sleeve, a push rod capable of moving up and down is arranged in the inner cavity, and a scraping head capable of moving left and right is arranged in the upper portion of the scraping sleeve; a control sleeve and a conversion sleeve are arranged in the third cavity; and a switch rod which can be floated up and down is arranged in the fourth cavity. The pneumatic or hydraulic single-seat regulating valve effectively prevents s sealing pair from being blocked and damaged.

Description

technical field [0001] The invention relates to an improved invention in the field of regulating valves, in particular to an improved invention of a pneumatic or hydraulic single-seat regulating valve. Background technique [0002] For traditional control valves, if the medium used contains solid particles, when the opening of the control valve is relatively small (the distance between the sealing surface of the disc and the sealing surface of the valve seat is relatively close), the solid particles are easy to block the sealing pair, causing The valve is stuck and the sealing surface is damaged. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a pneumatic or hydraulic single-seat regulating valve that prevents the sealing pair from being blocked and damaged. [0004] In order to solve the above technical problems, the present invention is realized by adopting the fo...

Claims

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Application Information

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IPC IPC(8): F16K1/32F16K1/42F16K31/122B08B1/04
CPCF16K1/32F16K1/42F16K31/122B08B1/165B08B1/32
Inventor 周永竖
Owner 永嘉企达知识产权咨询有限公司
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