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Stacked three-way flow valve

A three-way flow valve, superimposed technology, applied in the direction of fluid pressure actuation device, servo motor assembly, mechanical equipment, etc., can solve the problem of poor pressure compensation effect, inability to accurately control the speed of the actuator, unable to maintain stable flow, etc. problem, to achieve the effect of good pressure compensation effect, ingenious structure and small change of inlet pressure difference

Active Publication Date: 2020-09-22
NINGBO HOYEA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The speed control valve mentioned above is actually a three-way flow valve. Its pressure compensation effect is relatively poor, so it cannot maintain a stable flow rate, and the inlet pressure difference changes significantly, so it cannot accurately control the speed of the actuator.

Method used

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  • Stacked three-way flow valve

Examples

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Embodiment Construction

[0031] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0032] Such as figure 1 , figure 2 As shown, a superimposed three-way flow valve includes: a valve body 100, a flow regulating spool 300 and a pressure compensating spool 400. The three-way flow valve is a kind of flow that can adjust the flow of liquid and make the inlet and outlet It is an existing commonly used hydraulic component. In terms of working principle, the three-way flow valve is a valve composed of a relief valve and a throttle valve connected in series. During specific work, it can control The operating speed of the load element is adjusted; among them, the flow regulating spool 300 cooperates with the pressure compensating spool 400 to automatically compensate the pressure when adjusting the flow to ensur...

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Abstract

The invention provides a stacked three-way flow valve, and belongs to the technical field of three-way flow valves. The stacked three-way flow valve comprises a valve body, a flow adjustment valve core and a pressure compensation valve core; a valve hole is formed in the valve body; the valve hole comprises an oil outlet chamber, a first channel, an oil inlet chamber, a second channel, an oil returning chamber, a third channel and a bottom chamber which are connected in sequence; a first through hole is formed in the flow adjustment valve core; a second through hole is formed in the pressure compensation valve core; the pressure compensation valve core is arranged in the oil inlet chamber and the oil outlet chamber, and the first through hole is positioned in the first channel; the pressure compensation valve core is arranged in the oil inlet chamber, the oil returning chamber, and the bottom chamber, and seals the third channel; and the second through hole is positioned in the secondchannel. The stacked three-way flow valve has the beneficial effects that the pressure compensation effect is good; stable flow can be maintained; the pressure change difference at an inlet is small;and the speed of an executing element can be controlled precisely.

Description

technical field [0001] The invention belongs to the technical field of three-way flow valves, and relates to a superimposed three-way flow valve. Background technique [0002] The three-way flow valve is a combination valve composed of a relief valve and a throttle valve in series, which can adjust the operating speed of the actuator. The throttle valve is used to adjust the passing flow, and the fixed difference relief valve automatically compensates the influence of load changes, so that the pressure difference before and after the throttle valve is a constant value, eliminating the influence of load changes on the flow. [0003] The pressure before and after the throttle valve is led to the right and left ends of the overflow valve spool respectively. When the load pressure increases, the hydraulic pressure acting on the left end of the overflow spool increases, the spool moves to the right, and the overflow port Decrease, the inlet pressure increases, so that the pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/02F15B13/023F15B13/026
Inventor 虞拯陈高远张策
Owner NINGBO HOYEA MACHINERY MFG
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