CN207437891U - Prevent the solenoid valve of External leakage - Google Patents

Abstract

The utility model discloses a kind of solenoid valves for preventing External leakage, including valve body, electromagnetic drive part, seal assembly, seal assembly is arranged between valve body and electromagnetic drive part, electromagnetic drive part includes coil and the secured core set from top to bottom, spring, movable core, annular core, movable core is arranged between secured core and annular core, spring is arranged between secured core and movable core, the lower end of movable core passes through annular core, coil is arranged on secured core, the outside of annular core, movable core is located in coil, seal assembly is located at the bottom of movable core, annular U type part is provided between annular core and valve body, the opening of annular U type part is inwardly, spring is provided in opening, the central shaft of spring is parallel with the central shaft of movable core.The utility model is inserted into annular U type part between annular core and valve body, and annular U type part can generate the power to rebound up and down, so that seal assembly is buffered, is not easy to loosen.

Description

Prevent the solenoid valve of External leakage

Technical field

The utility model is related to a kind of solenoid valve more particularly to a kind of solenoid valves for preventing External leakage.

Background technology

Solenoid valve is to use the power on coil stimulating to generate electromagnetic force, and driving isolation diaphragm moves, to be turned on and off valve, Change the flow direction of fluid, so as to achieve the purpose that executive component changes fluid direction of motion.As shown in Figure 1, current electromagnetism The structure of valve is as follows：Including valve body 8, electromagnetic drive part and seal assembly, seal assembly is arranged on valve body 8 and electromagnetic drive part Between, seal assembly includes isolation diaphragm 5 and sealing element 7.Valve body 8 is fixed by screws with electromagnetic drive part, and electromagnetism drives Dynamic portion includes secured core 1, coil 2, spring 3, movable core 4 and annular core 6.If the solenoid valve that client uses be to Change the flow direction of high temperature fluid, once generating the temperature change from high temperature to low temperature, the valve body 8 of resin material will generate It expands with heat and contract with cold.Although valve body 8 and electromagnetic drive part are by 2 screw connections, since valve body 8 is deformed according to temperature, Screw will loosen.If loosened screw, spring 3 is pressed downward, and the periphery sealing between isolation diaphragm and valve body can loosen, and is generated Gap, so as to which External leakage occur.

Utility model content

To overcome disadvantages mentioned above, the purpose of this utility model is to provide a kind of isolation diaphragms of seal assembly to loosen The solenoid valve for preventing External leakage.

In order to reach object above, the technical solution adopted in the utility model is：Prevent the solenoid valve of External leakage, including Valve body, electromagnetic drive part, seal assembly, the seal assembly are arranged between valve body and electromagnetic drive part, the valve body and electricity Magnetic driving portion is fixed by screws, and the electromagnetic drive part includes coil and the secured core, the bullet that set from top to bottom Spring, movable core, annular core, the movable core are arranged between secured core and annular core, and the spring is arranged on Between secured core and movable core, the lower end of the movable core through annular core, the coil be arranged on secured core, The outside of annular core, the movable core are located in coil, and the seal assembly is located at the bottom of movable core, the annular Annular U type part is provided between iron core and valve body, the opening of the annular U type part is provided with spring, bullet inwardly in the opening The central shaft of spring is parallel with the central shaft of movable core.

The utility model prevents that the advantageous effect of the solenoid valve of External leakage from being, the insertion ring between annular core and valve body The U-shaped part of shape, since annular U type part has opening and inwardly, the spring in opening enables annular U type part to generate what is rebounded up and down Power so that seal assembly is buffered, is not easy to loosen, and the phenomenon that External leakage occurs then is prevented to occur.

Preferably, the seal assembly includes isolation diaphragm and sealing element, and the upper end of the isolation diaphragm is screwed into activity Mandrel bottom, the lower end protrusion movable core of the isolation diaphragm, the sealing element are arranged between valve body and isolation diaphragm, institute The bottom of the top surface and isolation diaphragm of stating sealing element is clamped, and ensures that liquid is not easy to flow between isolation diaphragm and sealing element.

It is that the isolation diaphragm is outward extended with extension, the annular U type as further improvement of the utility model Extension is clamped on the bottom of annular U type part by part, can be played the role of isolation diaphragm is further fixed.

Preferably, the sealing element is using fluorination sealing element, EPDM rubber or FPM rubber, the corrosion resistance of Viton It is good.

It is that the part that the valve body is contacted with liquid is anticorrosion material as further improvement of the utility model, into One step ensure that the corrosion resistance of the solenoid valve.

Preferably, the anticorrosion material is anti-corrosion resin material.

It is to be provided with silencing pad between the secured core and movable core as further improvement of the utility model. The sound that secured core generates when being collided with movable core is bigger, and silencing pad can reduce what secured core was generated with movable core Volume.

Description of the drawings

Fig. 1 is the semi-cutaway of solenoid valve in the prior art；

Fig. 2 is the semi-cutaway of solenoid valve in the present embodiment.

In figure：

1- secured cores；2- coils；3- springs；4- movable cores；5- isolation diaphragms；6- annular cores；7- sealing elements；8- Valve body；

9- valve bodies；10- secured cores；11- coils；12- springs；13- movable cores；14- annular cores；15- isolation films Piece；151- extensions；16- annular U type parts；17- sealing elements.

Specific embodiment

The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model Define.

Referring to shown in attached drawing 2, a kind of solenoid valve for preventing External leakage in the present embodiment, including valve body 9, electromagnetic drive Portion, seal assembly, seal assembly are arranged between valve body 9 and electromagnetic drive part, and valve body 9 is screwed with electromagnetic drive part Connection, electromagnetic drive part include coil 11 and the secured core 10 set from top to bottom, spring 12, movable core 13, annular Iron core 14, movable core 13 are arranged between secured core 10 and annular core 14, and spring 12 is arranged on secured core 10 with living Between dynamic iron core 13, through annular core 14, coil 11 is arranged on secured core 10, annular core 14 for the lower end of movable core 13 Outside, movable core 13 is located in coil 11, and seal assembly is located at the bottom of movable core 13, annular core 14 and valve body 9 Between be provided with annular U type part 16, the opening of annular U type part 16 inwardly, is provided with spring, the central shaft of spring and work in opening The central shaft of dynamic iron core 13 is parallel.Wherein, seal assembly includes isolation diaphragm 15 and sealing element 17, and sealing element 17 may be employed It is fluorinated sealing element, EPDM rubber or FPM rubber；The upper end of isolation diaphragm 15 is screwed into 13 bottom of movable core, isolation diaphragm 15 Movable core 13 is protruded in lower end, and sealing element 17 is arranged between valve body 9 and isolation diaphragm 15, and the top surface of sealing element 17 is with isolating The bottom clamping of diaphragm 15 ensures that liquid is not easy to flow between isolation diaphragm 15 and sealing element 17.Annular U type part 16 can produce The power of raw rebound up and down, so that isolation diaphragm 15 is buffered, is not easy to loosen, then prevents and External leakage occurs Phenomenon occurs.

Isolation diaphragm 15 in the present embodiment is outward extended with extension 151, and annular U type part 16 is by 151 clamping of extension In the bottom of annular U type part 16.

In order to ensure the corrosion resistance of valve body 9, the part that the valve body 9 in the present embodiment is contacted with liquid is anticorrosion material Material, specifically may be employed anti-corrosion resin material.

Solenoid valve during the work time, can send generation noise, secured core between secured core 10 and movable core 13 Silencing pad is provided between 10 and movable core 4, silicone rubber or EPDM sealing elements may be employed in silencing pad.

Embodiment of above is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with this skill The people of art understands the content of the utility model and is carried out, and can not limit the scope of protection of the utility model with this, all According to the equivalent change or modification that the utility model Spirit Essence is done, should all cover within the protection scope of the present utility model.

Claims (7)

1. a kind of solenoid valve for preventing External leakage, including valve body (9), electromagnetic drive part, seal assembly, the seal assembly is set It puts in valve body (9) between electromagnetic drive part, the valve body (9) is fixed by screws with electromagnetic drive part, the electromagnetism Driving portion includes coil (11) and the secured core (10) set from top to bottom, spring (12), movable core (13), annular iron Core (14), the movable core (13) are arranged between secured core (10) and annular core (14), and the spring (12) is set Between secured core (10) and movable core (13), the lower end of the movable core (13) is described through annular core (14) Coil (11) is arranged on secured core (10), the outside of annular core (14), and the movable core (13) is located in coil (11), The seal assembly is located at the bottom of movable core (13), it is characterised in that：It is set between the annular core (14) and valve body (9) Annular U type part (16) is equipped with, the opening of the annular U type part (16) is provided with spring, the center of spring inwardly in the opening Axis is parallel with the central shaft of movable core.

2. the solenoid valve according to claim 1 for preventing External leakage, it is characterised in that：The seal assembly includes isolation Diaphragm (15) and sealing element (17), the upper end of the isolation diaphragm (15) are screwed into movable core (13) bottom, the isolation film The lower end protrusion movable core (13) of piece (15), the sealing element (17) are arranged between valve body (9) and isolation diaphragm (15), institute The bottom of the top surface and isolation diaphragm (15) of stating sealing element (17) is clamped.

3. the solenoid valve according to claim 2 for preventing External leakage, it is characterised in that：The isolation diaphragm (15) is outside Extension (151) is extended with, extension (151) is clamped on the bottom of annular U type part (16) by the annular U type part (16).

4. the solenoid valve according to claim 2 for preventing External leakage, it is characterised in that：The sealing element (17) uses fluorine Change sealing element, EPDM rubber or FPM rubber.

5. the solenoid valve according to claim 1 for preventing External leakage, it is characterised in that：The valve body (9) connects with liquid Tactile part is anticorrosion material.

6. the solenoid valve according to claim 5 for preventing External leakage, it is characterised in that：The anticorrosion material is anti-corrosion Lose resin material.

7. the solenoid valve according to claim 1 for preventing External leakage, it is characterised in that：The secured core (10) is with living Dynamic iron core is provided with silencing pad between (13).