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One-way proportional flow valve

A proportional flow valve and proportional throttle valve technology, which is applied to fluid pressure actuating devices, servo motor components, mechanical equipment, etc., can solve problems such as the inability to compensate for unstable speed, and the throttle valve has no negative flow feedback. The amount of usage, the prevention of crawling, the effect of simplifying the system

Inactive Publication Date: 2014-01-15
SHANGHAI LIXIN HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The throttle valve has no flow negative feedback function, and cannot compensate the speed instability caused by the load change. Generally, it is only used in occasions where the load change is not large or the speed stability is not required.

Method used

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Embodiment Construction

[0015] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0016] Such as figure 1 and figure 2 As shown, the one-way proportional flow valve of the present invention includes a main valve body 1.1, on the main valve body 1.1, there are two threaded insertion holes, which are screwed into the one-way proportional throttle valve 1.2 and the pressure compensation valve respectively. Valve 1.3, the one-way proportional throttle valve and the pressure compensation valve are connected in series, reducing pressure first and then throttling, the oil inlet is the oil inlet of the pressure compensation valve, and the oil outlet is the oil outlet of the one-way proportional throttle valve , the oil outlet of the pressure compensation valve is connected with the oil inlet of the one-way proportional throttle valve...

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Abstract

The invention discloses a one-way proportional flow valve which comprises a main valve body, a one-way proportional throttle valve and a pressure-compensated valve. The main valve body is provided with mounting holes in advance, and the one-way proportional throttle valve and the pressure compensating valve are arranged in the main valve body in a series connection mode through the mounting holes. The one-way proportional throttle valve comprises a proportion electro-magnet, a pilot control assembly and a one-way throttle valve body. The proportion electro-magnet is connected with the one-way throttle valve body through the pilot control assembly, and used for controlling the opening and closing of a pilot valve element in the pilot control assembly and the opening and closing of a main valve element in the one-way throttle valve body through electromagnetic force. The one-way proportional flow valve has the advantages that manual control is replaced by electrical signal control to realize automatic control, remote control and program control, simplify a system, reduce the number of components for use and prevent the creeping phenomenon caused by load changes, and the one-way proportional flow valve can also be used on occasions with a high requirement for synchronization.

Description

technical field [0001] The invention relates to a proportional throttle valve, in particular to a one-way proportional flow valve controlled by electromagnetic force. Background technique [0002] A throttle valve is a valve that controls fluid flow by changing the throttle section or throttle length. A one-way throttle valve can be combined by connecting the throttle valve and the one-way valve in parallel. Throttle valve and one-way throttle valve are simple flow control valves. In the quantitative pump hydraulic system, the throttle valve and the overflow valve cooperate to form three kinds of throttling speed regulation systems, that is, throttling and speed regulation of the oil inlet circuit. system, oil return throttling speed regulating system and bypass throttling speed regulating system. The throttle valve has no flow negative feedback function and cannot compensate the speed instability caused by the load change. It is generally only used in occasions where the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 袁才富米根祥高建中朱剑根沈至伟
Owner SHANGHAI LIXIN HYDRAULIC
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