CN220850963U

CN220850963U - Electromagnetic valve with impurity-proof piston

Info

Publication number: CN220850963U
Application number: CN202322792923.2U
Authority: CN
Inventors: 陈志贤; 邢洪杰; 赵新龙
Original assignee: Kaisheng Power Technology Jiaxing Co ltd
Current assignee: Kaisheng Power Technology Jiaxing Co ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-04-26
Anticipated expiration: 2033-10-16

Abstract

The utility model discloses an electromagnetic valve with an impurity-proof piston, which comprises a coil component, an iron core component, a valve needle, a piston seat, a piston component and a valve seat, wherein the piston component comprises a piston, a piston ring, a pilot valve sealing piece, a piston gasket and a metal gasket, a balance hole is formed in the piston, and a filter screen is arranged at a hole opening of the balance hole in the piston; according to the electromagnetic valve with the impurity-preventing piston, the filter screen is arranged at the orifice of the balance hole of the piston, so that impurities in the system are prevented from entering the balance hole under the action of pressure difference, and the failure risk of the electromagnetic valve caused by blockage of the balance hole is eliminated.

Description

Electromagnetic valve with impurity-proof piston

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve with an impurity-proof piston.

Background

With the popularization of new energy automobiles, the duty ratio of a heat pump system in the automobile is higher and higher, and an electromagnetic valve is an important component in the heat pump system and controls the on-off of a runner of an air conditioning system. The electromagnetic valve adjusts the pressure difference between the upper and lower sides of the piston member by controlling the axial movement of the valve needle to achieve the purpose of opening/closing the valve, but since the diameter of the balance hole for balancing the pressure difference between the upper and lower sides of the piston is too small (generally about 1 mm), the balance hole is easily blocked by foreign matters during long-term use, resulting in failure of the electromagnetic valve.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the electromagnetic valve with the impurity-preventing piston, which prevents impurities in a system from entering a balance hole under the action of pressure difference by arranging a filter screen at the orifice of the balance hole of the piston, and eliminates the failure risk of the electromagnetic valve caused by the blockage of the balance hole.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a solenoid valve with prevent impurity piston, includes coil part, iron core part, needle, piston seat, piston part and disk seat, the piston part includes piston, piston ring, pilot valve sealing piece, piston gasket and metal gasket, be provided with the balance hole on the piston, be provided with the filter screen in the drill way department of balance hole on the piston.

Further, the piston is provided with a mounting groove at the orifice of the balance hole, and the filter screen is mounted in the mounting groove and connected in an interference mode.

Further, the outer side surface of the valve seat is provided with a hexagonal rotating part, an external thread and a plurality of round holes in sequence from top to bottom, and the bottom of the valve seat is provided with a valve port for communicating the inside of the valve seat with the round holes.

Further, the iron core component includes movable iron core, decides iron core and sleeve pipe, coil component installs in the sleeve pipe outside, decide iron core one end stretch into the sleeve pipe and with sleeve pipe fixed connection, the other end and piston seat fixed connection, move the vertical slip setting of iron core in the sleeve pipe to be provided with the spring between movable iron core and the fixed iron core, needle one end is located the sleeve pipe and is connected with movable iron core, and the other end passes in proper order and decides the iron core and stretch into in the piston seat and cooperate with the piston component.

Furthermore, the sleeve is connected with the fixed iron core, the fixed iron core is connected with the piston seat, and the piston seat is connected with the valve seat by laser welding.

Further, the valve seat is integrally molded by casting.

Further, the valve seat is made of stainless steel materials.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, the filter screen is arranged at the orifice of the balance hole of the piston, so that impurities in the system are prevented from entering the balance hole under the action of pressure difference, the failure risk of the electromagnetic valve caused by the blockage of the balance hole is eliminated, and the normal use of the electromagnetic valve is ensured.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of a solenoid valve having an anti-contaminant piston;

FIG. 2 is a schematic structural view of a piston member;

Fig. 3 is an enlarged view at a in fig. 2.

Marked in the figure as: 1. a coil member; 2. a core component; 201. a sleeve; 202. fixing an iron core; 203. a movable iron core; 204. a valve needle; 3. a piston seat; 4. a piston member; 401. a piston; 402. a pilot valve sealing plate; 403. piston rings; 404. a piston gasket; 405. a metal gasket; 406. a balance hole; 407. a filter screen; 408. a mounting groove; 5. a valve seat; 501. a hexagonal rotating part; 502. an external thread; 503. a round hole; 504. the valve port.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The electromagnetic valve with the impurity-proof piston 401 comprises a coil component 1, a core component 2, a valve needle 204, a piston seat 3, a piston component 4 and a valve seat 5, wherein the piston component 4 comprises a piston 401, a piston ring 403, a pilot valve sealing piece 402, a piston gasket 404 and a metal gasket 405, a balance hole 406 is formed in the piston 401, and a filter screen 407 is arranged at an orifice of the balance hole 406 in the piston 401.

In this embodiment, preferably, a mounting groove 408 is disposed at the opening of the balancing hole 406 of the piston 401, and the filter screen 407 is mounted in the mounting groove 408 and connected with the piston by interference.

In this embodiment, preferably, the outer side surface of the valve seat 5 is provided with a hexagonal rotating portion 501, an external thread 502 and a plurality of round holes 503 in sequence from top to bottom, and the bottom of the valve seat 5 is provided with a valve port 504 communicating the interior of the valve seat 5 with the plurality of round holes 503.

In this embodiment, preferably, the iron core component 2 includes a movable iron core, a fixed iron core 202 and a sleeve 201, the coil component 1 is installed outside the sleeve 201, one end of the fixed iron core 202 extends into the sleeve 201 and is fixedly connected with the sleeve 201, the other end of the fixed iron core is fixedly connected with the piston seat 3, the movable iron core is vertically slidably arranged in the sleeve 201, a spring is arranged between the movable iron core and the fixed iron core 202, one end of the valve needle 204 is located in the sleeve 201 and is connected with the movable iron core, and the other end of the valve needle sequentially penetrates through the fixed iron core 202 and extends into the piston seat 3 to be matched with the piston component 4.

In this embodiment, preferably, the sleeve 201 is connected to the fixed iron core 202, the fixed iron core 202 is connected to the piston seat 3, and the piston seat 3 is connected to the valve seat 5 by laser welding.

In this embodiment, preferably, the valve seat 5 is integrally formed by casting.

In this embodiment, preferably, the valve seat 5 is made of stainless steel.

Working principle:

The connection mode is as follows: the solenoid valve having the foreign substance preventing piston 401 is fixed by inserting the entire solenoid valve into the end of use and by using a nut.

Open valve state: the coil is not electrified, the end face of the piston part 4 is contacted with the inner top end face of the piston seat 3, and at the moment, the valve hole of the valve seat 5 is conducted, and the medium flows.

Closing valve state: the coil is electrified, the movable iron core moves downwards to be attracted with the fixed iron core 202, the valve needle 204 is driven to move downwards to be attached to the valve guide port 504 of the piston component 4, the pressure difference is established between the upper cavity and the lower cavity of the piston component 4, the piston component 4 moves downwards to be attached to the end face of the valve seat 5 under the action of pressure difference force, the valve hole is closed, and medium circulation is blocked.

The advantages are that:

According to the utility model, the filter screen 407 is arranged at the orifice of the balance hole 406 of the piston 401, so that impurities in the system are prevented from entering the balance hole 406 under the action of pressure difference, the failure risk of the electromagnetic valve caused by the blockage of the balance hole 406 is eliminated, and the normal use of the electromagnetic valve is ensured.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. An electromagnetic valve with prevent impurity piston, includes coil part, iron core part, needle, piston seat, piston part and disk seat, its characterized in that: the piston part comprises a piston, a piston ring, a pilot valve sealing piece, a piston gasket and a metal gasket, wherein a balance hole is formed in the piston, and a filter screen is arranged at a hole opening of the balance hole in the piston.

2. A solenoid valve with an anti-contaminant piston according to claim 1, wherein: the piston is provided with the mounting groove in the drill way department of balancing hole, the filter screen is installed in the mounting groove and interference connection.

3. A solenoid valve with an anti-contaminant piston according to claim 1, wherein: the outer side surface of the valve seat is provided with a hexagonal rotating part, an external thread and a plurality of round holes in sequence from top to bottom, and the bottom of the valve seat is provided with a valve port for communicating the interior of the valve seat with the round holes.

4. A solenoid valve having an anti-contaminant piston according to claim 3, wherein: the valve needle comprises a valve needle, and is characterized in that the iron core component comprises a movable iron core, a fixed iron core and a sleeve, the coil component is arranged on the outer side of the sleeve, one end of the fixed iron core stretches into the sleeve and is fixedly connected with the sleeve, the other end of the fixed iron core is fixedly connected with a piston seat, the movable iron core is vertically arranged in the sleeve in a sliding mode, a spring is arranged between the movable iron core and the fixed iron core, one end of the valve needle is positioned in the sleeve and is connected with the movable iron core, and the other end of the valve needle sequentially penetrates through the fixed iron core and stretches into the piston seat to be matched with the piston component.

5. A solenoid valve with an anti-contaminant piston according to claim 4, wherein: the sleeve is connected with the fixed iron core, the fixed iron core is connected with the piston seat and the piston seat is connected with the valve seat by laser welding.

6. A solenoid valve with an anti-contaminant piston according to claim 1, wherein: the valve seat is integrally molded by casting.

7. A solenoid valve with an anti-contaminant piston according to claim 1, wherein: the valve seat is made of stainless steel materials.