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A slide valve type inverse proportional pressure reducing valve

A pressure reducing valve and inverse proportional technology, applied in the field of hydraulic control, can solve problems such as integrated processing difficulties, achieve the effects of reducing manufacturing costs, ensuring reliability, and high control precision

Active Publication Date: 2019-05-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a slide valve type inverse proportional pressure reducing valve in order to solve the problem of difficulty in one-piece processing in the prior art

Method used

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  • A slide valve type inverse proportional pressure reducing valve
  • A slide valve type inverse proportional pressure reducing valve
  • A slide valve type inverse proportional pressure reducing valve

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A spool type inverse proportional pressure reducing valve, such as figure 1 As shown, it includes: proportional electromagnet 1, baffle plate 2, cylindrical plug 3, valve body 4, first return spring 5, valve core 6, second return spring 7, piston 8;

[0031] The valve body 4 is a bottom-sealed hollow equal-diameter cylindrical cavity; the side wall is provided with an oil port 9, a working oil port 10, an oil inlet port 11, and an oil drain port 12;

[0032] Such as figure 2 As shown, the valve core 6 is a cylindrical structure, and blind holes are opened inwards along the two ends of the cylinder respectively; on the side walls of the cylinder corresponding to the two blind holes, two symmetrical first pressure introduction holes 20 and second Pressure introduction hole 21; Throttle hole 15 is opened respectively on the cylinder side wall corresponding to the blind hole near baffle plate 2; The holes are connected; the outer wall circumference corresponding to the f...

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PUM

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Abstract

The invention relates to a sliding valve type inverse proportion pressure reduction valve, and belongs to the field of hydraulic control. The valve comprises a proportion electromagnet, a baffle, a cylindrical plug, a valve body, a first reset spring, a valve element, a second reset spring and a piston; valve cavity equal-diameter machining is adopted, when the electromagnet does not work, work pressure output by the pressure reduction valve is maximum, along with current increase, electromagnetic thrust output by the electromagnet is increased, work pressure of the pressure reduction valve isgradually reduced, hydraulic pressure in a valve element work cavity, spring force and electromagnetic force are balanced, and hydraulic oil path pressure adjusting is achieved. The proportion pressure reduction valve is high in control precision, system work stability can be improved, the structure is simple and easy to machine, the manufacturing cost is low, and assembling complexity is reduced.

Description

technical field [0001] The invention relates to a spool type inverse proportional pressure reducing valve, in particular to a spool type inverse proportional pressure reducing valve which can continuously and steplessly control the oil pressure in the hydraulic system of an automatic transmission of an automobile or an automatic control system of an industrial hydraulic pressure. hydraulic control field. Background technique [0002] The proportional pressure reducing valve is a control valve that uses the change of the electromagnetic coil to control the proportional electromagnet to realize the opening adjustment of the valve core of the pressure reducing valve. When the electromagnetic coil is energized, the electromagnetic force opens the valve core, and the hydraulic oil flows through the valve cavity to act on the surface of the valve core to generate pressure, which forms a force balance with the spring force and electromagnetic force, thereby controlling the pressure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/07F16K31/06
CPCF16K11/0708F16K31/0613
Inventor 吴维肖冰清苑士华胡纪滨刘辉
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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