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Electromagnetic pressure proportional valve

A proportional valve and pressure technology, applied in the field of proportional valves, can solve problems such as reducing the flow rigidity of electromagnetic proportional valves, and achieve the effect of improving service life

Pending Publication Date: 2022-07-05
BORGWARNER AUTOMOTIVE COMPONENTS (NINGBO) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, in the existing electromagnetic proportional valve, when the oil enters the valve body from the oil supply port, the oil acts on the hydraulic force of the spool and the force of the oil. The quality will affect the life of the spool, and also reduce the flow rigidity of the electromagnetic proportional valve

Method used

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Embodiment Construction

[0018] In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-3 The shown electromagnetic pressure proportional valve includes a valve body 1 and an electromagnet 2, and the electromagnet 2 is assembled to one end of the valve body 1. In order to prevent the electromagnet 2 from being exposed, the outer cover of the electromagnet 2 is provided with a valve sleeve, and the The valve sleeve is assembled and fixed with the valve body 1, and the electromagnet 2 is electrically connected with a driving power supply for supplying power to the electromagnet 2. The valve body 1 is provided with a valve cavity 1.1, and the valve body 1 is also opened with a valve cavity. 1.1 The connected oil supply port 1.2, the control port 1.3 for supplying control pressure to the controlled obj...

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PUM

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Abstract

The electromagnetic pressure proportional valve comprises a valve body and an electromagnet, a valve cavity is formed in the valve body, an oil supply port, a control port and an oil drainage port which are communicated with the valve cavity are formed in the valve body, a valve rod moving in the axial direction is arranged in the valve cavity, and a first valve plug, a flow guide body and a second valve plug are integrally formed on the valve rod; the diameter of the first valve plug is smaller than that of the second valve plug; the first valve plug and the second valve plug which are different in diameter are adopted, hydraulic force in the direction of the electromagnet is generated at the control port, and when electromagnetic force generated by the electromagnet is equal to the sum of the hydraulic force and the elastic force of the spring, the pressure of the control port and the electromagnetic force of the electromagnet form a linear relation; meanwhile, the flow guide body is arranged between the first valve plug and the second valve plug, so that oil originally rushing to the second valve plug is changed to flow to the cavity wall of the valve cavity, hydraulic power acting on the sliding valve rod when the first valve plug and / or the second valve plug are / is opened can be effectively reduced, the service life of the sliding valve rod is prolonged, and the flowing rigidity of the electromagnetic proportional valve is improved.

Description

technical field [0001] The present invention relates to the technical field of proportional valves, in particular, to an electromagnetic pressure proportional valve. Background technique [0002] There is known an electromagnetic proportional valve that adjusts the supply and discharge of pilot oil supplied to a hydraulic device as a control object according to a magnetic current; the conventional electromagnetic proportional valve includes a valve body that accommodates a spool that can move in the axial direction, and a drive In the electromagnetic proportional valve, the driving device of the spool can supply a control pressure corresponding to the position of the spool to the hydraulic equipment to be controlled by switching the position of the spool in the axial direction. [0003] However, in the existing electromagnetic proportional valve, when the oil enters the valve body from the oil supply port, the action of the oil, the hydraulic power of the spool and the quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/07F16K31/06
CPCF16K11/07F16K31/0613
Inventor 程志袁峥正刘湘林
Owner BORGWARNER AUTOMOTIVE COMPONENTS (NINGBO) CO LTD