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Gear pump safety valve structure

A safety valve and gear pump technology, applied in lift valves, engine components, mechanical equipment, etc., can solve the problems of poor manufacturability, high requirements on cone surface accuracy, and difficulty in precise and stable pressure regulation, and achieve accurate pressure regulation and stable pressure relief. Fast, reliable results

Inactive Publication Date: 2019-09-10
XIAN AERO ENGINE CONTROLS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the present invention: the present invention designs a high-sensitivity, high-reliability cone valve for existing products, such as the difficulty in controlling the open window area, the high precision of the cone surface but poor manufacturability, and the difficulty in precise and stable pressure regulation. Gear pump safety valve structure, change the cone valve form to slide valve form

Method used

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  • Gear pump safety valve structure
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Embodiment Construction

[0016] Such as figure 1 , a gear pump safety valve structure, the safety valve structure includes a valve core and a valve sleeve, the valve core is a rotary body structure, the front part of the valve core is a working part, the rear part of the valve core is rod-shaped, and the shape of the front part of the valve core is It is a combination of a round table and a round convex head, the outer diameter of the round convex head is smaller than the radius of the upper table of the round table, the transition between the tail of the round convex head and the upper table of the round table is an arc transition, and the head of the round convex head has a hemispherical shape;

[0017] The rear part of the valve core is arranged in the valve sleeve and is slidingly fitted with the valve sleeve, the front part of the valve core is located outside the valve sleeve, and the radius of the lower surface of the circular platform is larger than the inner diameter of the valve sleeve;

[0...

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Abstract

The invention relates to a gear pump safety valve structure. The safety valve structure comprises a valve element and a valve sleeve, the valve element is of a rotation body structure, a work portionis arranged on the front portion of the valve element, the rear portion of the valve element is in a rod shape, the appearance of the front portion of the valve element is a combination of a round table and a round convex head, the outer diameter of the round convex head is smaller than the radius of the upper table board of the round table, the tail of the round convex head and the upper table board of the round table are in rounding arc transition, the head portion of the round convex head is in a hemispheric shape, the rear portion of the valve element is arranged in the valve sleeve, and is in sliding fit with the valve sleeve, the front portion of the valve element is located outside the valve sleeve, and the radius of a lower table board of the round table is larger than the inner diameter of the valve sleeve. Valve pressure adjusting is precise, the pressure relief is stable and rapid, and sensitivity and the reliability are high.

Description

technical field [0001] The invention belongs to the technical field of product structure and relates to a gear pump safety valve structure. Background technique [0002] As we all know, the existing pilot-operated safety valve is generally composed of a bushing, a valve, an adjusting nail, a two-stage poppet valve, a two-stage spring, related oil circuits and related parts. Although the existing pilot-operated safety valve is suitable for high-pressure systems and opens quickly compared with the traditional single-stage spring-loaded valve, there are still many shortcomings in this structure. First, it is difficult to control the opening window area in the form of a cone valve. When the safety valve is opened, the pressure is unstable, which will cause the spring to vibrate at high frequency, and even cause the spring to break, which is not conducive to the safe operation of the gear pump. The second is that the tapered surface seal must ensure high precision during process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/32
CPCF16K1/32F16K1/36
Inventor 崔建
Owner XIAN AERO ENGINE CONTROLS
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