CN210623582U

CN210623582U - Electromagnetic valve

Info

Publication number: CN210623582U
Application number: CN201921662291.5U
Authority: CN
Inventors: 梁宁; 方玉萍; 蔡祖发; 金晓明
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-26
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a solenoid valve belongs to solenoid valve technical field. The electromagnetic valve solves the problems that the magnetic conduction core of the existing electromagnetic valve is tightly attached to the wall of the inner sleeve, the inner sleeve is easy to age and break, the movement clearance of the piston under the same volume is small, and accumulated water in a pipeline cannot be well discharged. The electromagnetic valve comprises a shell and a valve body connected with the shell, wherein a spring, a sealing ring, a magnetic conduction core, a piston and an inner sleeve are arranged in the shell and the valve body, the sealing ring is arranged at the bottom of the magnetic conduction core, the magnetic conduction core and the sealing ring are arranged in the valve body, the outer surface of the magnetic conduction core is tightly attached to the inner wall of the valve body, the inner sleeve is abutted against the bottom of the sealing ring and tightly attached to the inner wall of the valve. The utility model has the advantages of compact structure, prolonged inner sleeve service life, good drainage effect and fast drainage speed.

Description

Electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field specifically is a solenoid valve.

Background

The electromagnetic valve has compact structure, convenient control and wide application, and is used in products of various household appliance industries such as washing machines, ovens, dish washing machines, water heaters and the like. The household appliances such as washing machines, ovens and solar water heaters need to quickly drain accumulated water in pipelines. In the existing electromagnetic valve, a seal ring is installed in a groove in the middle of a magnetic conduction core, and then the magnetic conduction core is installed in an inner sleeve, so that the magnetic conduction core is tightly attached to the wall of the inner sleeve, and the inner sleeve is sleeved in a coil. When the electromagnetic valve is in a non-energized state, a gap between the piston and the magnetic core is called an air gap. The greater the air gap, the less attractive the piston is subject to, all other things being equal. The larger the air gap is, the higher the lifting height of the piston is when the solenoid valve is opened, and the faster the water is drained. After the air gap increases to a certain degree, the appeal undersize that produces the piston when the solenoid valve circular telegram can't provide the sufficient power of compression spring, can lead to the piston can't lift up, unable normal drainage, consequently current solenoid valve ubiquitous drainage speed is slow, and drainage effect is poor, and the endotheca ftractures easily moreover leads to the poor problem of solenoid valve drainage effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage is fast, the drainage is effectual, reduce the solenoid valve of endotheca fracture risk.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the electromagnetic valve comprises a shell and a valve body connected with the shell, and is characterized in that a spring, a sealing ring, a magnetic conduction core, a piston and an inner sleeve are arranged in the shell and the valve body, the sealing ring is installed at the bottom of the magnetic conduction core, the magnetic conduction core and the sealing ring are installed in the valve body, the outer surface of the magnetic conduction core is tightly attached to the inner wall of the valve body, the inner sleeve is abutted against the bottom of the sealing ring and tightly attached to the inner wall of the valve body, and the spring and the piston are installed in the inner sleeve.

The utility model discloses a theory of operation: the magnetic conduction core and the inner sleeve clamp the sealing ring to realize axial sealing. When the electromagnetic valve is used, the valve body is electrified, the magnetic conduction core generates attraction force on the piston, the piston compresses the spring to move upwards, and the electromagnetic valve is in an open state. Adopt above-mentioned setting, compare in the current magnetic core of hugging closely the inner sleeve wall, under the same condition such as piston, coil, the magnetic core of this solenoid valve can possess bigger external diameter, so have bigger appeal to the piston, consequently, the increase of the biggest external diameter of magnetic core, can compensate the air gap increase and lead to the reduction to the piston appeal, consequently can suitably increase the air gap, quicker drainage, the drainage is effectual, simultaneously the endotheca is because need not overlap outside the magnetic core, make the minimum wall thickness of endotheca increase, can reduce the risk of endotheca fracture.

In the above electromagnetic valve, the valve body is further provided with a coil therein.

In the above electromagnetic valve, the bottom of the piston is further provided with a rubber core.

In the electromagnetic valve, the shell is further provided with a water inlet and a water outlet.

In the electromagnetic valve, a circle of bulge is arranged at the joint of the water inlet and the water outlet, and the bulge is used for abutting against the rubber core to play a sealing role.

In the electromagnetic valve, a circle of convex block is arranged at the bottom of the rubber core and used for matching with the bulge to play a sealing role.

In the above electromagnetic valve, the water inlet and the water outlet are arranged in a staggered manner.

In the above electromagnetic valve, the housing and the valve body are connected by a connecting member.

Compared with the prior art, the electromagnetic valve adopting the technical scheme has the following beneficial effects: the utility model discloses compare current solenoid valve that drains and have compact structure, extension endotheca life, the effectual, the fast advantage of drainage.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic structural diagram of a magnetic core and an inner sleeve of a conventional solenoid valve;

fig. 3 is a schematic view of the structure of the magnetic core and the inner sleeve of the present invention.

In the figure, 1, a spring; 2. a seal ring; 3. a coil; 4. a magnetically conductive core; 5. a piston; 6. an inner sleeve; 7. a housing; 8. a water inlet; 9. a rubber core; 10. sealing the water surface; 11. a water outlet; 12. a valve body; 13. a protrusion; 14. and (4) a bump.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the electromagnetic valve includes a housing 7 and a valve body 12 connected to the housing 7, the housing 7 and the valve body 12 are provided with a spring 1, a sealing ring 2, a coil 3, a magnetic core 4, a piston 5, an inner sleeve 6, and a rubber core 9, the bottom of the magnetic core 4 is provided with a step for mounting the sealing ring 2, the sealing ring 2 is mounted on the step, the magnetic core 4 and the sealing ring 2 are mounted in the coil 3, the outer surface of the magnetic core 4 is tightly attached to the inner wall of the coil 3, the inner sleeve 6 is abutted against the bottom of the sealing ring 2 and tightly attached to the inner wall of the coil 3, and the spring 1 and the piston 5 are mounted in. The inner sleeve 6 is arranged from the lower part of the coil 3 and is matched with the magnetic conduction core 4 to extrude the sealing ring 2, thereby realizing axial sealing. The sealing ring 2 is an O-ring or other seal commonly known in the art.

In further detail, the shell 7 is also provided with a water inlet 8 and a water outlet 11. Water flow enters from the water inlet 8, when the piston 5 drives the rubber core 9 to move upwards, the channels of the water inlet 8 and the water outlet 11 are opened, and at the moment, the water flow can be discharged from the water inlet 8 to the water outlet 11.

In a further detail, a circle of bulge 13 is arranged at the joint of the water inlet 8 and the water outlet 11, and the bulge 13 is used for abutting against the rubber core 9 to play a sealing role. When the rubber core 9 abuts against the protrusion 13, the protrusion 13 and the rubber core 9 are tightly attached to each other by the spring 1, thereby achieving a sealing effect. The surface of the rubber core 9 abutting against the bulge 13 is the water sealing surface 10.

In more detail, a circle of convex block 14 is arranged at the bottom of the rubber core 9, and the convex block 14 is used for matching with the convex 13 to play a sealing role.

In further detail, the water inlet 8 and the water outlet 11 are arranged in a staggered manner. This setting is when the solenoid valve is open mode, and rivers are more unobstructed for rivers reduce ponding when can entering into delivery port 11 from water inlet 8 and produce.

In more detail, for the convenience of assembly and disassembly, the housing 7 and the valve body 12 are connected through a connecting piece.

As shown in fig. 2 and 3, the left side is magnetic core 4 and endotheca 6 of current solenoid valve, and the right side is the utility model discloses a magnetic core 4 and endotheca 6, under the same condition such as piston 5, coil 3, the external diameter of magnetic core 4 compares original 9.7mm and increases to 11mm, the minimum wall thickness of endotheca 6 has increased to 0.7mm from 0.5mm, the increase of the biggest external diameter of magnetic core 4 can compensate the air gap increase and lead to the reduction to 5 appeal of piston, consequently can suitably increase the air gap, more quick drainage has also reduced the risk that endotheca 6 ftractures.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the use of the term in the present text is used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an electromagnetic valve, includes casing (7) and valve body (12) of connecting with casing (7), its characterized in that, casing (7) and valve body (12) in be equipped with spring (1), sealing washer (2), magnetic conduction core (4), piston (5), endotheca (6), magnetic conduction core (4) bottom install sealing washer (2), magnetic conduction core (4) and sealing washer (2) install in valve body (12), magnetic conduction core (4) surface hug closely valve body (12) inner wall, endotheca (6) butt in sealing washer (2) bottom and hug closely valve body (12) inner wall, spring (1) and piston (5) install in endotheca (6).

2. A solenoid valve according to claim 1, characterised in that the valve body (12) further comprises a coil (3).

3. A solenoid valve according to claim 1, characterised in that the bottom of the piston (5) is provided with a rubber core (9).

4. A solenoid valve according to claim 1, characterised in that said housing (7) is further provided with a water inlet (8) and a water outlet (11).

5. A solenoid valve according to claim 4, characterised in that the junction between the inlet (8) and outlet (11) is provided with a ring of protrusions (13), said protrusions (13) being adapted to abut the rubber core (9) for sealing.

6. A solenoid valve according to claim 5, characterized in that the rubber core (9) is further provided with a ring of protrusions (14) at the bottom, and the protrusions (14) are used for matching with the protrusions (13) to achieve a sealing effect.

7. A solenoid valve according to claim 4, characterised in that the inlet (8) and outlet (11) are offset.

8. A solenoid valve according to claim 1, characterised in that the housing (7) and the valve body (12) are connected by a connecting piece.