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A pilot operated stop valve

A cut-off valve and pilot-operated technology, applied in servo motor components, mechanical equipment, fluid pressure actuators, etc., can solve the problems of high cost, bulky, complex structure, etc.

Active Publication Date: 2019-11-08
陕西航天泵阀科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing pilot-operated globe valves, such as the DA-type pilot-operated globe valve produced by Bosch Rexroth Hydraulics Co., Ltd., Germany, are mostly plate valve structures, which are bulky, complex in structure, and high in cost, and are not suitable for highly integrated small walking In mechanical equipment

Method used

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  • A pilot operated stop valve
  • A pilot operated stop valve
  • A pilot operated stop valve

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] A pilot-operated shut-off valve according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 to Figure 3 As shown, a pilot-operated stop valve according to an embodiment of the present invention includes: a valve body 1, an adjustment rod 10, a bushing 3, a valve housing 2, a connecting body 6, a pilot valve sleeve 7, a pilot valve core 8, a first Spring 9a, one-way spool 5, second spring 9b, screw plug 11, unloading spool 4, thi...

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PUM

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Abstract

The invention provides a pilot-operated type globe valve. The pilot-operated type globe valve comprises a valve body, an adjusting rod, a bushing, a valve sleeve, a connecting body, a pilot-operated valve sleeve, a pilot-operated valve element, first springs, a one-way valve element, second springs, a screw plug, an unloading valve element, and third springs. According to the embodiment, the pilot-operated type globe valve is compact in size, simple in processing, and has low manufacturing cost.

Description

technical field [0001] The invention relates to a valve, in particular to a pilot-operated stop valve. Background technique [0002] Pilot-operated shut-off valves are widely used in hydraulic circuits with accumulators to switch the flow of the pump to a non-pressurized bypass when the set accumulator pressure is reached. Another application of the pilot-operated globe valve is for high / low pressure pump systems. In this application, when the pressure reaches the set high pressure value, the low pressure pump is switched to the non-pressurized bypass. Existing pilot-operated globe valves, such as the DA-type pilot-operated globe valve produced by Bosch Rexroth Hydraulics Co., Ltd., Germany, are mostly plate valve structures, which are bulky, complex in structure, and high in cost, and are not suitable for highly integrated small walking in mechanical equipment. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 不公告发明人
Owner 陕西航天泵阀科技集团有限公司