Safety valve with buffer performance

A safety valve and performance technology, applied in the field of safety valves, can solve the problems of high machining accuracy of parts, unfavorable for stable mass production, lack of buffer performance, etc., to meet the requirements of mass production, simple and compact connection and processing, handy effect

Inactive Publication Date: 2016-06-22
龙工(上海)精工液压有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing safety valves either do not have cushioning performance, or have cushioning performance but have a complex structure, which requires high machining accuracy of parts, which is not conducive to stable mass production

Method used

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  • Safety valve with buffer performance
  • Safety valve with buffer performance
  • Safety valve with buffer performance

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Experimental program
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Embodiment Construction

[0017] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0018] The present invention is a safety valve with cushioning performance, such as figure 1 Shown is a structural schematic diagram of a safety valve with buffer performance. The inside of the front end of the valve sleeve 4 is connected with the first cylinder CY1 on the valve seat 1 through interference fit, so as to be fixed on the lower end surface of the valve sleeve, and the upper end surface of the valve seat 1 cooperates with the tapered surface of the valve core 2 to form a line seal. There is an annular groove in the middle outer circle of the valve sleeve 4, and the first O-shaped sealing ring 5 is connected in the groove. The external thread of the middle section and the internal thread of the upper end are respectively arranged on the valve sleeve 4, and the internal thread of the upper end is connected with the exte...

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PUM

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Abstract

The invention relates to a safety valve with buffer performance. The safety valve is characterized in that a valve bush with an oil return opening and an oil discharge opening is included; a valve seat with a through hole is fixed to the lower end of the valve bush; a valve element sleeved with a spring is arranged in the valve bush; a first oil way is formed in the valve element in the length direction; the upper end of the valve element stretches into a valve element sleeve; the valve element sleeve is arranged in an adjusting seat; a screw plug is arranged in the upper end of the adjusting seat; the adjusting seat is partially arranged in the upper end of the valve bush; and a lock nut is arranged on the part, exposed out of the valve bush, of the adjusting seat. All the components of the safety valve are connected and matched simply and compactly, the valve bush and the adjusting seat are in threaded connection, and the pre-tightening force of the spring can be adjusted, namely, the pressure of the safety valve can be adjusted. The safety valve can meet the requirements of various work conditions for different buffer performances by adjusting an annular throttle hole, a first throttle hole and a second throttle hole. Part machining is convenient, the machining difficulty and the manufacturing cost are reduced, high stability is achieved, and the requirement for mass producing and manufacturing is met.

Description

technical field [0001] The invention relates to a safety valve with cushioning performance, which belongs to the technical field of hydraulic cartridge valves. Background technique [0002] The safety valve is a hydraulic component commonly used in hydraulic systems. In various engineering applications, it is often used to limit the maximum pressure of the hydraulic system or a certain actuator (such as oil cylinder, hydraulic motor, etc.) to prevent the system or components from being subjected to high pressure. The hydraulic pressure may cause damage or a safety accident. In some specific working conditions, such as the slewing brake of the excavator, the moment of starting and stopping of the hoisting machine, etc., the requirements for the safety valve are not limited to unloading after overloading, but also hope that the opening and closing process of the safety valve is soft to reduce the pressure on the safety valve. Shock when starting or stopping. Existing safety ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/06F16K47/00
CPCF16K17/06F16K47/00
Inventor 李小亮杨勇余红波黄雪兰翁国保
Owner 龙工(上海)精工液压有限公司
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