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Electromagnetic valve

A solenoid valve and valve body technology, applied in the field of solenoid valves, can solve the problems of easy internal leakage, valve stem wear, and low product assembly qualification rate, and achieve the effect of improving service life and reducing impact.

Pending Publication Date: 2021-08-20
浙江佳明新能源装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pilot solenoid valves on the market have the following defects: (1) The upper end of the pressure relief hole in the center of the piston is easily worn by the valve stem, so that the valve stem cannot block the pressure relief hole when the valve is closed, thus affecting the use of the solenoid valve (2) The seal between the valve stem and the piston adopts a flat seal, which is prone to internal leakage; (3) There are many parts and the qualified rate of product assembly is low

Method used

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Embodiment Construction

[0025] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, so they are only examples, and should not be used to limit the protection scope of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0027] like Figure 1-Figure 4 As shown, the embodiment of the present invention provides a solenoid valve, including a valve body 100 , a piston 200 and an electromagnetic driver 300 .

[0028] The side of the valve body 100 is provided with an inlet port 110, the bottom of the valve body 100 is provided with an outlet port 120, and the valve body 100 is provided with a valve p...

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Abstract

The invention discloses an electromagnetic valve which comprises a valve body, a piston and an electromagnetic driving part. A flow inlet, a flow outlet and a valve port are formed in the valve body, and a valve cavity is formed in the position, located above the valve port, of the valve body. The piston is arranged in the valve cavity in a matched mode, a piston spring supported below the piston is arranged in the valve body, and a pressure relief hole and a bypass hole are formed in the piston. The electromagnetic driving part comprises a sleeve, a coil winding arranged outside the sleeve in a sleeving mode, a fixed iron core fixed in the sleeve, a movable iron core capable of axially moving in the sleeve in a reciprocating mode and a valve rod connected with the movable iron core, the lower end of the sleeve is connected to the valve body and communicates with the valve cavity, an inner cavity is formed in the movable iron core, and a first penetrating hole is formed in the bottom of the inner cavity. The valve rod penetrates through the first penetrating hole, a baffle ring is arranged on the periphery of the upper end of the valve rod, a valve rod spring is supported between the baffle ring and the top of the inner cavity, and the lower end of the valve rod is used for abutting against the upper end of the pressure relief hole. The abrasion clearance between the valve rod and the piston can be compensated, and the purpose of prolonging the service life is achieved.

Description

technical field [0001] The invention relates to the technical field of automatic control valves, in particular to an electromagnetic valve. Background technique [0002] Solenoid valve is a valve that is controlled to open and close by electromagnetic force, and is widely used in the field of vehicle parts. Solenoid valves are divided into direct-acting solenoid valves, step-by-step direct-acting solenoid valves and pilot solenoid valves in principle. At present, the pilot solenoid valves on the market have the following defects: (1) The upper end of the pressure relief hole in the center of the piston is easily worn by the valve stem, so that the valve stem cannot block the pressure relief hole when the valve is closed, thus affecting the use of the solenoid valve (2) The seal between the valve stem and the piston adopts a flat seal, which is prone to internal leakage; (3) There are many parts and the qualified rate of product assembly is low. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06
CPCF16K31/0655F16K31/0696
Inventor 王薇珲袁崇静
Owner 浙江佳明新能源装备有限公司