CN220286430U

CN220286430U - Electromagnetic valve

Info

Publication number: CN220286430U
Application number: CN202321704668.5U
Authority: CN
Inventors: 沈磊; 俞振寰
Original assignee: Zhejiang Liming Zhizao Co ltd; Liming Electric Control Technology Zhoushan Co ltd
Current assignee: Zhejiang Liming Zhizao Co ltd; Liming Electric Control Technology Zhoushan Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-01-02
Anticipated expiration: 2033-06-29

Abstract

The utility model provides an electromagnetic valve, and belongs to the field of valve body technology and automobile parts. The utility model comprises a shell, a static iron core fixedly arranged in the shell and a magnetism isolating guide sleeve fixedly connected to the top end of the static iron core, wherein a movable iron core is movably arranged in the magnetism isolating guide sleeve, a guide rod is arranged in the center of the static iron core in a penetrating manner, the bottom end of the guide rod is fixedly connected with a sealing piston, a spring body is sleeved on the outer wall of the guide rod, and the spring body is arranged between the static iron core and the movable iron core. According to the utility model, the spring body is placed in the middle of the electromagnetic valve and is connected by the spring seat, so that the requirement on the opening of the static iron core is reduced, and the electromagnetic force is further improved. Meanwhile, due to the application of the position of the spring body, the sealing piston and the movable iron core do not need to be in interference fit, so that the overall installation reliability of the lifting valve is improved, and the installation requirement of the electromagnetic valve is reduced; the electromagnetic valve belongs to a normally open electromagnetic valve, and can be particularly used for double-cavity control of an air suspension, thereby adjusting the performance of the air suspension.

Description

Electromagnetic valve

Technical Field

The utility model relates to the field of valve bodies, in particular to an electromagnetic valve.

Background

The electromagnetic valve is an electromagnetic controlled automobile part, is an automatic basic element for controlling fluid, and belongs to an actuator. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. Different solenoid valves function at different locations of the control system, most commonly one-way valves, safety valves, directional control valves, etc.

When a spring is installed, the traditional electromagnetic valve has a large demand on the opening of the static iron core, and further influences the electromagnetic force. Meanwhile, interference fit is needed between the sealing piston and the movable iron core in the valve body, so that the overall installation reliability of the valve is reduced, and meanwhile, the overall design of the electromagnetic valve is difficult due to the arrangement requirement of the spring, and the installation requirement on the electromagnetic valve is high.

How to invent solenoid valves to improve these problems becomes a highly desirable problem for those skilled in the art, particularly the problem of the spring placement of normally open solenoid valves, which affects the overall performance of the valve.

Disclosure of Invention

In order to remedy the above-mentioned shortcomings, the present utility model provides a solenoid valve, which aims to improve the above-mentioned problems.

The utility model is realized in the following way:

the utility model provides an electromagnetic valve, which comprises a shell, a static iron core fixedly arranged in the shell and a magnetism isolating guide sleeve fixedly connected to the top end of the static iron core, wherein a movable iron core is movably arranged in the magnetism isolating guide sleeve, a guide rod penetrates through the center of the static iron core, the bottom end of the guide rod is fixedly connected with a sealing piston, the outer wall of the guide rod is sleeved with a spring body, the spring body is arranged between the static iron core and the movable iron core, the top end of the spring body is fixedly connected with a spring seat, the spring seat is fixedly arranged at the top end of the guide rod, and the spring seat is propped against the bottom end of the movable iron core.

Preferably, the bottom of quiet iron core has seted up movable chamber, sealed piston is located movable intracavity, sealed piston's lateral wall and the inner wall sliding connection in movable chamber and laminating each other.

Preferably, the bottom fixedly connected with disk seat of quiet iron core, the cavity that is linked together with the activity chamber is seted up to the inside of disk seat, run through on the lateral wall of disk seat and set up the side through-hole that is linked together with the cavity is inside, the bottom through-hole that is linked together with the cavity is run through to the bottom of disk seat.

Preferably, the bottom end of the sealing piston extends to the inside of the cavity, a space is arranged between the sealing piston and the inner bottom of the cavity, and the bottom diameter of the sealing piston is larger than the top end caliber of the bottom through hole.

Preferably, the electromagnetic valve further comprises a coil assembly, and the coil assembly is fixedly arranged at the top end of the shell.

Preferably, a sealing ring is arranged between the static iron core and the valve seat.

Preferably, the top end of the sealing piston is provided with a plurality of communication holes in a penetrating way.

Preferably, the magnetism isolating guide sleeve and the static iron core are connected together in a welding mode.

The beneficial effects of the utility model are as follows: this design places the solenoid valve middle part with the spring body, utilizes the spring holder to connect to reduce the open-ended demand to quiet iron core, and then improve electromagnetic force. Meanwhile, due to the application of the position of the spring body, the sealing piston and the movable iron core do not need to be in interference fit, so that the overall installation reliability of the lifting valve is improved, and the installation requirement of the electromagnetic valve is reduced. Furthermore, the welding scheme of the magnetism isolating guide sleeve and the static iron core is adopted, so that the installation requirement on the sealing ring is reduced, the service life of the product is further prolonged, the strength of the product is increased, and the cost is saved. And because the welding is used and the middle part of the spring body is arranged, the top of the magnetism isolating guide sleeve is not required to be additionally provided with a positioning sleeve, compared with the prior market scheme, the space is saved, the cost is reduced, and the reliability of the product is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a solenoid valve coil assembly in a de-energized state according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the energized state of a coil assembly of a solenoid valve provided by an embodiment of the utility model;

FIG. 3 is a schematic view of a sealing piston of a solenoid valve provided by an embodiment of the utility model;

fig. 4 is a schematic diagram of a magnetism isolating guide sleeve and a static iron core of a solenoid valve according to an embodiment of the present utility model.

In the figure: 1. a coil assembly; 2. magnetism isolating guide sleeve; 3. a movable iron core; 4. a housing; 5. a spring seat; 6. a spring body; 7. a stationary core; 8. a sealing piston; 9. a seal ring; 10. a valve seat; 11. a side through port; 12. a bottom through hole; 13. a movable cavity; 14. a communication hole; 15. and a guide rod.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, the electromagnetic valve comprises a shell 4, a static iron core 7 fixedly arranged in the shell 4, and a magnetism isolating guide sleeve 2 fixedly connected to the top end of the static iron core 7, wherein the magnetism isolating guide sleeve 2 and the static iron core 7 are connected together in a welding mode. By adopting the welding scheme of the magnetism isolating guide sleeve 2 and the static iron core 7, the tightness is improved, an independent sealing structure is not needed, the installation requirement on the sealing structure is reduced, the space and the cost are saved, the service life of the product is further prolonged, the strength of the product is increased, and the cost is saved. And because the welding is used and the middle part of the position of the spring body 6 is arranged, a positioning sleeve is not required to be additionally arranged at the top of the magnetism isolating guide sleeve 2, compared with the prior market scheme, the space is saved, the cost is reduced, and the reliability of the product is improved.

The movable iron core 3 is movably arranged in the magnetism isolating guide sleeve 2, and the coil assembly 1 is fixedly arranged at the bottom end of the shell 4. The top of casing 4 sets up and moulds the skeleton and the coil body of coil assembly 1 together with magnetic conduction end cover and corresponding attach fitting disposable package, effectively solves the problem of generating heat, waterproof dustproof.

The center of quiet iron core 7 runs through and is provided with guide arm 15, and sealed piston 8 is offered to the bottom fixedly connected with of guide arm 15, and movable chamber 13 has been offered to the bottom of quiet iron core 7, and sealed piston 8 is located movable chamber 13, and sealed piston 8's lateral wall and the inner wall sliding connection in movable chamber 13 just laminating each other. The bottom fixedly connected with disk seat 10 of quiet iron core 7, the cavity that is linked together with movable cavity 13 has been seted up to the inside of disk seat 10, runs through on the lateral wall of disk seat 10 and has seted up the side opening 11 that is linked together with the cavity is inside, and the bottom of disk seat 10 runs through and has seted up the end opening 12 that is linked together with the cavity is inside. The sealing piston 8 and the inner wall of the movable chamber 13 are sealed by a sealing material, such as an O-ring, and further, in order to reduce friction, a design of a gurley ring or a schiff ring can be adopted.

A sealing ring 9 is arranged between the static iron core 7 and the valve seat 10 and is used for sealing between the static iron core 7 and the valve seat 10.

The bottom end of the sealing piston 8 extends to the inside of the cavity, a space is arranged between the sealing piston 8 and the inner bottom of the cavity, and the bottom diameter of the sealing piston 8 is larger than the top end caliber of the bottom through hole 12.

The outer wall cover of guide arm 15 is equipped with spring body 6, and spring body 6 sets up between quiet iron core 7 and moving iron core 3, and the top fixedly connected with spring holder 5 of spring body 6, spring holder 5 are fixed to be set up on the top of guide arm 15, and spring holder 5 offsets with moving iron core 3's bottom.

The top end of the sealing piston 8 is provided with a plurality of communication holes 14 in a penetrating way for balancing the pressure on the upper side and the lower side of the sealing piston 8.

In this embodiment, when the coil assembly 1 is not energized, the movable iron core 3 and the seal piston 8 are opened by the spring seat 5 under the force of the spring body 6, so that the fluid passes through the side port 11 to the bottom port 12. Meanwhile, the pressure of the side through hole 11 enters the inside through the communication hole 14 on the sealing piston 8, so that the upper side and the lower side of the sealing piston 8 are communicated under force, and the sealing of the sealing piston 8 is ensured not to be influenced by the pressure of the side through hole 11.

When the coil assembly 1 is electrified, electromagnetic force generated by the coil assembly 1 passes through the shell 4, the static iron core 7 and the like, the electromagnetic force overcomes the elastic force of the spring body 6, the movable iron core 3 is sucked onto the static iron core 7, and meanwhile, the sealing piston 8 is pushed by the guide rod 15 to seal the bottom through hole 12. In particular, the top of the sealing piston 8 is vulcanized or fitted with a sealing material such as FKM, rubber, etc. At this time, the bottom through hole 12 and the side through hole 11 are disconnected, but the inside of the sealing piston 8 is still communicated with the bottom through hole 12, and the stress balance of the upper side and the lower side of the sealing piston 8 is ensured by the arrangement of the communication hole 14.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The electromagnetic valve comprises a shell (4), a static iron core (7) fixedly arranged in the shell (4) and a magnetism isolating guide sleeve (2) fixedly connected to the top end of the static iron core (7), wherein a movable iron core (3) is movably arranged in the magnetism isolating guide sleeve (2), a guide rod (15) is arranged in the center of the static iron core (7) in a penetrating mode, a sealing piston (8) is fixedly connected to the bottom end of the guide rod (15), and the electromagnetic valve is characterized in that a spring body (6) is sleeved on the outer wall of the guide rod (15), and the spring body (6) is arranged between the static iron core (7) and the movable iron core (3).

2. The electromagnetic valve according to claim 1, characterized in that a spring seat (5) is fixedly connected to the top end of the spring body (6), the spring seat (5) is fixedly arranged at the top end of the guide rod (15), and the spring seat (5) is propped against the bottom end of the movable iron core (3).

3. The electromagnetic valve according to claim 1, characterized in that the bottom end of the stationary core (7) is provided with a movable cavity (13), the sealing piston (8) is located in the movable cavity (13), and the side wall of the sealing piston (8) is slidably connected with the inner wall of the movable cavity (13) and is mutually attached.

4. A solenoid valve according to claim 3, characterized in that the bottom end of the static iron core (7) is fixedly connected with a valve seat (10), a cavity communicated with the movable cavity (13) is formed in the valve seat (10), a side through hole (11) communicated with the cavity is formed in the side wall of the valve seat (10) in a penetrating manner, and a bottom through hole (12) communicated with the cavity is formed in the bottom end of the valve seat (10) in a penetrating manner.

5. The electromagnetic valve according to claim 4, characterized in that the bottom end of the sealing piston (8) extends into the interior of the cavity, a space is provided between the sealing piston (8) and the interior bottom of the cavity, and the bottom diameter of the sealing piston (8) is larger than the top end caliber of the bottom through opening (12).

6. The solenoid valve according to claim 1, characterized in that it further comprises a coil assembly (1), said coil assembly (1) being fixedly arranged at the top end of the housing (4).

7. A solenoid valve according to claim 1, characterised in that a sealing ring (9) is arranged between the stationary core (7) and the valve seat (10).

8. The electromagnetic valve according to claim 1, characterized in that the top end of the sealing piston (8) is provided with a plurality of communication holes (14) therethrough.

9. The electromagnetic valve according to claim 1, characterized in that the magnetism isolating guide sleeve (2) and the static iron core (7) are connected together in a welding mode.