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A cartridge unloading valve

A kind of unloading valve, cartridge type technology, applied in the direction of balance valve, valve device, valve details, etc., can solve the problems of bulky and high cost

Active Publication Date: 2020-06-26
BEIJING VALVE GENERAL FACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the unloading valve group is often used to control the double hydraulic pump from fast feed to working feed, so that the low pressure and high flow pump can be unloaded. The existing unloading valve group generally consists of an independent one-way The valve and unloading valve are integrated into one valve block, which is bulky and expensive

Method used

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  • A cartridge unloading valve
  • A cartridge unloading valve
  • A cartridge unloading valve

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Embodiment Construction

[0021] 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.

[0022] The cartridge type unloading valve according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Such as Figure 1 to Figure 3 As shown, a plug-in unloading valve according to an embodiment of the present invention includes: a valve body 1, a screw sleeve 2, an adjusting rod 3, a valve seat 6, a valve sleeve 9, an unloading valve core 4, and an unloading spring 5 , One-way valve plate 7, one-way spring 8.

[0024] Specifically, the valve body ...

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Abstract

The invention provides a plug-in type unloading valve. The plug-in type unloading valve comprises a valve body, a barrel, a regulating stem, a valve seat, a valve sleeve, an unloading valve element, an unloading spring, a one-way valve plate and a one-way spring. According to the embodiment of the invention, the plug-in type unloading valve is compact in structure, easy to machine and low in manufacturing cost.

Description

technical field [0001] The invention relates to a valve assembly for a hydraulic device, in particular to a cartridge unloading valve. Background technique [0002] Duplex hydraulic pumps are often used in special machine tools for machining with fast feed and work feed requirements. At this time, the duplex pump consists of a high-pressure small-flow hydraulic pump and a low-pressure large-flow hydraulic pump. When fast feeding, the two hydraulic pumps supply oil at the same time (the pressure is low at this time), and when the work is feeding, the oil is supplied by the high-pressure and small-flow hydraulic pump (the pressure is high at this time), and at the same time, the oil circuit system is used The large-flow pump is unloaded, which can save energy and reduce oil heating compared with a high-pressure, high-flow pump. In the prior art, the unloading valve group is often used to control the double hydraulic pump from fast feed to working feed, so that the low pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F16K17/04F16K27/02
CPCF15B13/024F16K17/044F16K27/0254
Inventor 不公告发明人
Owner BEIJING VALVE GENERAL FACTORY CO LTD