CN213017993U

CN213017993U - Isolation diaphragm type electromagnetic valve

Info

Publication number: CN213017993U
Application number: CN202020669023.2U
Authority: CN
Inventors: 何振良
Original assignee: Takasago Electric Suzhou Co Ltd
Current assignee: Takasago Electric Suzhou Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-04-20
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses an isolation diaphragm type solenoid valve, including valve body, electromagnetic drive portion, solenoid and isolation diaphragm, be provided with the flow path in the valve body, the flow path forms inlet and liquid outlet in the valve body, electromagnetic drive portion sets up and the valve body on, solenoid sets up in electromagnetic drive portion, isolation diaphragm is located between valve body and the electromagnetic drive portion, isolation diaphragm is the thin arc structure in middle thick edge, increases isolation diaphragm's durability.

Description

Isolation diaphragm type electromagnetic valve

Technical Field

The utility model relates to a solenoid valve field especially relates to an isolation diaphragm type solenoid valve.

Background

The electromagnetic valve is excited by an electrified coil to generate electromagnetic force, so that an isolation diaphragm is driven to move to open or close a valve, the flowing direction of fluid is changed, and the purpose that an actuating element changes the moving direction of the fluid is achieved. The valve has various types and wide application range, and is the most important one of control valves.

The isolating diaphragm type electromagnetic valve has wide application in the fields of medical treatment, environmental analysis and detection and life science, and comprises a valve body with a fluid inlet and a fluid outlet, a valve seat, a cylindrical shell type coil driving part internally provided with an electrified coil, a circular isolating diaphragm made of resin materials and a connecting piece.

The isolation diaphragm in the existing electromagnetic valve is of a plane structure with equal thickness, the isolation diaphragm is relatively seriously stretched, and the isolation diaphragm is easy to break after long-term up-and-down reciprocating motion, so that the electromagnetic valve is less in use frequency and shorter in service life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, an object of the present invention is to provide an isolation diaphragm type solenoid valve that increases the durability of an isolation diaphragm.

In order to achieve the above purpose, the utility model discloses a technical scheme is: an isolation diaphragm type electromagnetic valve comprises a valve body, an electromagnetic driving portion, an electromagnetic coil and an isolation diaphragm, wherein a flow path is arranged in the valve body, a liquid inlet and a liquid outlet are formed in the flow path in the valve body, the electromagnetic driving portion is arranged on the valve body, the electromagnetic coil is arranged on the electromagnetic driving portion, the isolation diaphragm is located between the valve body and the electromagnetic driving portion, and the isolation diaphragm is of an arc-shaped structure with thick middle and thin edge.

The utility model provides a pair of isolation diaphragm type solenoid valve, its beneficial effect is: by changing the isolation diaphragm from a planar structure with equal thickness into a shape with thick middle part and thin edge, the strength of the middle part is increased, and the use times and the durability of the isolation diaphragm are improved.

Further, a placing groove is formed in the valve body and located below the isolation diaphragm, a rubber sealing ring is arranged in the placing groove, and the rubber sealing ring is in contact with the isolation diaphragm.

Further, the bottom of valve body is provided with the mounting, through screw fixed connection between the mounting valve body, improve the stability of connecting between the mounting valve body.

Further, the mounting up end is provided with the step, the terminal surface is provided with the recess under the valve body, the recess corresponds and forms annular installation cavity from top to bottom with the step, annular installation cavity sets up along the edge of step, be provided with the gasket in the annular installation cavity, can cushion the atress between valve body and the mounting through the gasket, slow down the not hard up problem of screw between valve body and the mounting, the elasticity that the gasket produced can act on the isolation diaphragm and the rubber seal of top, further guarantees that the peripheral sealing of isolation diaphragm can not become flexible, then can not produce the clearance, further prevents the outside leakage.

Further, electromagnetic drive portion includes from last fixed iron core, spring, movable iron core and the annular iron core that sets up extremely down, movable iron core sets up between fixed iron core and annular iron core, the spring sets up between fixed iron core and movable iron core, annular iron core is passed to movable iron core's lower extreme, solenoid sets up in fixed iron core, annular iron core's the outside, movable iron core is located solenoid inboard, and after solenoid circular telegram, movable iron core can move down, and then the isolation diaphragm of drive movable iron core below plugs up the flow path, the flow of liquid in the separation flow path.

Furthermore, the rubber sealing ring is an O-shaped ring, so that the rubber sealing ring is uniformly stressed when the electromagnetic driving part moves downwards, and the stability of the operation of the electromagnetic valve is improved.

Furthermore, the part of the valve body, which is in contact with liquid, is made of an anti-corrosion resin material, so that the corrosion resistance of the electromagnetic valve is ensured.

Furthermore, the rubber sealing ring is made of fluorinated rubber, EPDM rubber or FPM rubber, and has good corrosion resistance.

Drawings

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

fig. 2 is a schematic structural diagram between the rubber seal ring and the isolation diaphragm.

In the figure:

1-a valve body; 2-a toroidal core; 3-a rubber sealing ring; 4-an electromagnetic coil; 5-isolating the diaphragm; 6-a fixing piece; 7-a gasket; 8-fixing the iron core; 9-a spring; 10-movable iron core.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the attached

drawings

1 and 2, an isolation diaphragm type electromagnetic valve comprises a valve body 1, an electromagnetic driving part, an electromagnetic coil 4 and an isolation diaphragm 5, wherein a flow path is arranged in the valve body 1, a liquid inlet and a liquid outlet are formed in the flow path in the valve body 1, the part of the valve body 1, which is in contact with liquid, is made of anticorrosive resin, the electromagnetic driving part is arranged on the valve body 1, the electromagnetic coil 4 is arranged on the electromagnetic driving part, the isolation diaphragm 5 is positioned between the valve body 1 and the electromagnetic driving part, the electromagnetic driving part comprises a fixed iron core 8, a spring 9, a movable iron core 10 and an annular iron core 2, the fixed iron core 8 and the annular iron core 2 are arranged from top to bottom, the movable iron core 10 is arranged between the fixed iron core 8 and the movable iron core 10, the lower end of the movable iron core 10 penetrates through the annular iron core 2, the movable iron core 10 is positioned at the inner side of the electromagnetic coil 4;

the isolation diaphragm 5 is of an arc structure with thick middle and thin edge, the valve body 1 is provided with a placing groove, the placing groove is positioned below the isolation diaphragm 5, a rubber sealing ring 3 is arranged in the placing groove, the rubber sealing ring 3 is in contact with the isolation diaphragm 5, the rubber sealing ring 3 is an O-shaped ring, and the rubber sealing ring 3 is made of fluorinated rubber, EPDM rubber or FPM rubber;

the bottom of valve body 1 is provided with

mounting

6, and 6 between the valve body 1 through screw fixed connection of mounting, 6 up end of mounting are provided with the step, and the terminal surface is provided with the recess under the valve body 1, and the recess corresponds and forms the annular installation cavity with the step from top to bottom, and the annular installation cavity sets up along the edge of step, is provided with gasket 7 in the annular installation cavity.

By changing the isolation diaphragm 5 from a planar structure of equal thickness to a shape of thick in the middle to thin at the edge, the strength in the middle is increased, and the number of uses and durability of the isolation diaphragm 5 are improved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides an isolation diaphragm type solenoid valve, includes valve body (1), electromagnetic drive portion, solenoid (4) and isolation diaphragm (5), be provided with the flow path in valve body (1), the flow path forms inlet and liquid outlet, its characterized in that in valve body (1): the electromagnetic driving part is arranged on the valve body (1), the electromagnetic coil (4) is arranged on the electromagnetic driving part, the isolation diaphragm (5) is located between the valve body (1) and the electromagnetic driving part, and the isolation diaphragm (5) is of an arc structure with thick middle and thin edge.

2. An isolation diaphragm type solenoid valve as claimed in claim 1, wherein: the valve is characterized in that a placing groove is formed in the valve body (1), the placing groove is located below the isolation diaphragm (5), a rubber sealing ring (3) is arranged in the placing groove, and the rubber sealing ring (3) is in contact with the isolation diaphragm (5).

3. An isolation diaphragm type solenoid valve as claimed in claim 1, wherein: the bottom of valve body (1) is provided with mounting (6), pass through screw fixed connection between mounting (6) valve body (1).

4. An isolation diaphragm type solenoid valve as claimed in claim 3, wherein: the valve is characterized in that a step is arranged on the upper end face of the fixing piece (6), a groove is arranged on the lower end face of the valve body (1), the groove vertically corresponds to the step and forms an annular installation cavity, the annular installation cavity is arranged along the edge of the step, and a gasket (7) is arranged in the annular installation cavity.

5. An isolation diaphragm type solenoid valve as claimed in claim 1, wherein: electromagnetic drive portion includes from last fixed iron core (8), spring (9), movable iron core (10) and annular iron core (2) that set up extremely down, movable iron core (10) set up between fixed iron core (8) and annular iron core (2), spring (9) set up between fixed iron core (8) and movable iron core (10), annular iron core (2) are passed to the lower extreme of movable iron core (10), solenoid (4) set up the outside at fixed iron core (8), annular iron core (2), movable iron core (10) are located solenoid (4) inboard.

6. An isolation diaphragm type solenoid valve as claimed in claim 2, wherein: the rubber sealing ring (3) is an O-shaped ring.

7. An isolation diaphragm type solenoid valve as claimed in claim 1, wherein: the part of the valve body (1) contacting with liquid is made of anti-corrosion resin material.

8. An isolation diaphragm type solenoid valve as claimed in claim 2, wherein: the rubber sealing ring (3) is made of fluorinated rubber, EPDM rubber or FPM rubber.