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Direct-acting type safety valve

A safety valve, direct-acting technology, applied in the field of hydraulic equipment, can solve problems such as poor sealing performance, noise, pressure jitter, etc.

Inactive Publication Date: 2015-09-09
WUHU ZHONGYI HYDRAULIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The processing accuracy of the existing safety valve is difficult to guarantee, the plane seal has too high requirements on the shell processing, the sealing performance is poor, the oil flow is too small, and it is difficult to adapt to the increasing use requirements of the large displacement steering gear
At the same time, the valve core does not open smoothly, and problems such as pressure jitter and noise often occur

Method used

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  • Direct-acting type safety valve

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Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0024] In the present invention, in the absence of a contrary statement, the orientation words included in the term, such as "upper, lower, inner, outer", etc., only represent the orientation of the term in the normal use state, or are understood by those skilled in the art. colloquial term and should not be construed as a limitation of the term.

[0025] see figure 1 , the present invention provides a direct-acting safety valve, including a valve seat 1, a valve core 2 and a pressure regulating fixture 7, the pressure regulating fixture 7 is connected to the tail of the valve core 2 and the pressure regulating fixture 7 can drive the valve core 2 The head ext...

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PUM

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Abstract

The invention discloses a direct-acting type safety valve which comprises a valve seat (1), a valve element (2) an a pressure-adjusting fixing piece (7). The pressure-adjusting fixing piece (7) is connected to the tail of the valve element (2) and capable of driving the head of the valve element (2) to stretch into an inner cavity of the valve seat (1). The outer surface of the head of the valve element (2) is provided with a tapered sealing face so that a sealing space can be formed between the valve seat (1) and the head of the valve element (2). The direct-acting type safety valve further comprises an elastic connection piece (6). The elastic connection piece (6) is arranged between the pressure-adjusting fixing piece (7) and the valve element (2). The direct-acting type safety valve is better in airtightness, larger in oil through amount, smooth in opening / closing operation and small in noise.

Description

technical field [0001] The invention relates to hydraulic equipment, in particular to a direct-acting safety valve with large oil flow and better sealing performance. Background technique [0002] The safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. . Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, so as to ensure that no accidents occur due to excessive pressure, and play an important role in protecting personal safety and equipment operation. [0003] The machining accuracy of the existing safety valve is difficult to guarantee, the flat seal has too high req...

Claims

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Application Information

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IPC IPC(8): F16K17/06F16K1/38F16K1/46
CPCF16K1/385F16K1/465F16K17/0466F16K17/06
Inventor 蔡国定张平平何关清金鑫
Owner WUHU ZHONGYI HYDRAULIC TECH