Adjustable compression release valve

A pressure reducing valve, adjustable technology, applied in the direction of lift valve, valve details, safety valve, etc., can solve the problems of low sensitivity, small adjustment range, inability to adjust the spring force, etc., to increase sensitivity, simple structure, increase in size The effect of the scope of application

Inactive Publication Date: 2008-11-05
ZHEJIANG WORLD BRASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this simple pressure reducing valve can automatically adjust the outlet pressure according to the inlet pressure change, but because the spring force cannot be adjusted, the range of automatic adjustment is small.
Due to the unreasonable structural design of the spool, it cannot move up and down well when the water pressure changes, and the sensitivity is low
Other adjustable pressure reducing valves also do not have a structure for adjusting the spring, and there are also the above-mentioned problems.

Method used

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Embodiment Construction

[0017] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0018] Such as figure 1 with figure 2 As shown, the adjustable pressure reducing valve includes a valve body 1, a valve core 2, a valve stem 3, a lower piston 4 and an adjustment mechanism, which are used to stabilize the pressure in the water pipe.

[0019] Specifically, the valve body 1 has a water inlet chamber 11 and a water outlet chamber 12, the wall 11a of the water inlet chamber 11 extends into the middle of the valve body 1, and the valve between the water inlet chamber 11 and the water outlet chamber 12 There is also a cavity 13 inside the body 1 . The cavity 13 is located on the upper part of the cavity wall 11 a and has a channel 14 communicating with the cavity 13 . A sealing surface 15 is provided in the m...

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PUM

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Abstract

The invention provides an adjustable pressure reducing valve, belonging to the valve technical field, which solves the problems of small adjustable range of the pressure reducing valve, lower sensitivity in the traditional pressure reducing valve, which includes a valve body with an inlet chamber and an outlet chamber and a valve handle arranged in the valve body, wherein a middle chamber is arranged in the valve body between the inlet chamber and the outlet chamber, and the inlet chamber communicates with the outlet chamber through the middle chamber. A sealing surface and a valve core sealed with the sealing surface are arranged in the middle chamber. The valve handle is movably arranged in the inlet chamber, one end of which passes through the inlet chamber and is fixed with the valve core. A lower piston is arranged in the outlet chamber, the other end of valve handle passes through the inlet chamber backwards and is fixed with the lower piston. A spring is arranged at the lower part of the lower piston, and one end of the spring abuts against the lower piston, and the other end abuts against the adjusting mechanism which can adjust the blenometer. The adjustable pressure reducing valve has the characteristics of simple structure, high sensitivity and wide application range.

Description

technical field [0001] The invention belongs to the technical field of valves, and relates to a pressure reducing valve, in particular to an adjustable pressure reducing valve. Background technique [0002] On the pipelines that transport liquids, especially the water pipelines of high-rise buildings, in order to control and balance the pressure of the liquid in the pipelines, it is usually necessary to install a pressure reducing valve. [0003] Existing decompression valve such as Chinese patent application number is that 200420045101.2 provides a kind of " simple decompression valve ", comprises bonnet and valve body, is provided with spool in the valve body, and the middle part of valve body is provided with the big and small circles that connect up and down. Hole, the lower part of the spool is provided with a spring. An annular boss is arranged on the edge of the large round hole; an annular groove is arranged in the middle of the small round hole, and an annular rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/22F16K1/52F16K31/122
Inventor 卓旦春
Owner ZHEJIANG WORLD BRASS
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