CN215258101U

CN215258101U - Electromagnetic valve with high-pitch high-sealing on-off structure

Info

Publication number: CN215258101U
Application number: CN202121656501.7U
Authority: CN
Inventors: 黄磊; 雷星; 杨军
Original assignee: Suzhou Junsheng Intelligent Technology Co ltd
Current assignee: Suzhou Junsheng Intelligent Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-21
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a high-pitch high-sealing on-off structure solenoid valve, including interconnected protecgulum and casing, the protecgulum is connected with the outlet duct and the air flue internal diameter of outlet duct is crescent from entry end to exit end, and the casing is connected with intake pipe and bayonet joint, and the casing is inside to be equipped with the electromagnetism module that communicates with the bayonet joint electricity, forms the circulation chamber between protecgulum, casing and the electromagnetism module; the end part of the movable iron core of the electromagnetic module corresponds to the sealing gasket of the air outlet pipe; the inlet end of the air outlet pipe is provided with a circle of bulge corresponding to the sealing gasket, and the air outlet pipe and the sealing gasket are in contact with the circumference line of the sealing gasket through the bulge to realize sealing. The air outlet pipe and the sealing gasket of the utility model adopt a linear sealing mode, and the front cover is not easy to be affected by injection molding shrinkage deformation to cause poor sealing, thereby better realizing product sealing; the air passage is set to have a gradually-changed diameter from small to large, so that small air pressure and large flow can be realized, and the desorption of the system is cleaner.

Description

Electromagnetic valve with high-pitch high-sealing on-off structure

Technical Field

The utility model relates to the technical field of valves, in particular to high sound velocity high seal break-make structure solenoid valve.

Background

Under the normal condition, the phenomenon of volatilizing can exist in the petrol in the car oil tank, and along with the temperature rise and the aggravation of volatilizing, the petrol steam of volatilizing if directly discharge in the atmosphere can be to causing the polluted environment and have the potential safety hazard. In order to prevent and control the pollution emission of motor vehicles and improve the environmental air quality, the ministry of ecological environment of the people's republic of China and the State administration of quality supervision, inspection and quarantine jointly release the national six standards, thereby realizing the stricter control on the emission amount of gasoline allowed to volatilize into the atmosphere by automobiles.

In order to avoid environmental pollution and potential safety hazards caused by direct discharge of gasoline vapor volatilized in an oil tank and implement the latest national six standards, a carbon tank is developed by utilizing good adsorption capacity of activated carbon in the prior art to temporarily store the gasoline vapor, and the gasoline vapor stored in the carbon tank is sent to an engine cylinder to be burnt by opening a carbon tank electromagnetic valve when an engine works, so that the environment is protected, and the fuel cost is saved.

The carbon tank electromagnetic valve on the market mainly comprises a shell and a front cover arranged at one end of the shell, wherein the front cover is provided with an air outlet pipe; the other end of the shell is provided with an air inlet pipe and an electrified plug; an electromagnetic module corresponding to the air outlet pipe is arranged in the shell; the electromagnetic module realizes the on-off of the air passage through the on-off of the movable iron core and the fixed iron core, and the on-off of the air passage is realized by the on-off of the sealing gasket at the end part of the movable iron core and the front cover. In the sealing mode of the existing structure, the sealing end face of the air outlet pipe is a plane, the sealing is realized by being attached to the surface of the sealing gasket, the surface sealing needs a spring with larger elasticity when the sealing is done, when the spring with large elasticity is used, the long-term deformation resistance and the noise reduction effect of the sealing gasket made of rubber are poor, if the sealing end face of the air outlet pipe is not parallel to the sealing surface of the sealing gasket due to the reasons of assembly and the like, the defects of air leakage and the like can be caused, and the product is failed; in addition, because the air flue of conventional outlet duct all sets up to straight section of thick bamboo structure, it can not produce the sound velocity effect, often has the problem that the petrol steam desorption of adsorbing at the air flue inner wall is not clean and influences the recovery effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a high-pitch high-sealing on-off structure solenoid valve, which comprises a front cover and a shell which are connected with each other, wherein the front cover is connected with an air outlet pipe, the inner diameter of the air passage of the air outlet pipe is gradually increased from an inlet end to an outlet end, the shell is connected with an air inlet pipe and a plug, an electromagnetic module which is electrically communicated with the plug is assembled in the shell, and a circulation cavity is formed among the front cover, the shell and the electromagnetic module;

the electromagnetic module comprises a winding framework arranged in the shell, a coil wound on the winding framework and electrically communicated with the plug connector, a fixed iron core and a movable iron core which are arranged in the winding framework and axially correspond to each other, a reset spring corresponding to the movable iron core, a magnetic conduction frame which is arranged in the shell and simultaneously connected with the coil and the fixed iron core, and a sealing gasket which is fixedly arranged at the end part of the movable iron core and corresponds to the air outlet pipe;

the entry end of outlet duct is provided with the round and corresponds sealed protruding of filling up, under the reset state, outlet duct and sealed the pad pass through protruding and sealed circumferential line contact that fills up realizes sealedly.

Wherein, the front cover and the air outlet pipe are integrally formed by injection molding.

Wherein, the outlet duct and the bulge are integrally formed by injection molding.

Wherein, the included angle alpha between the axial inner wall of the air outlet pipe and the axial axis is 2-10 degrees.

Through the technical scheme, the utility model discloses following beneficial effect has:

1. the air outlet pipe and the sealing gasket are sealed in a linear sealing mode, and the front cover is not easily affected by injection molding shrinkage deformation to cause poor sealing, so that the product sealing can be better realized;

2. the air passage is set to have a gradually-changed diameter from small to large, so that the sound speed effect of small air pressure and large flow can be realized, and the desorption of the system is cleaner.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic sectional structural view of a solenoid valve disclosed in an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 10. a front cover; 11. an air outlet pipe; 111. an airway; 112. a protrusion; 20. a housing; 21. an air inlet pipe; 22. a plug-in connector; 30. an electromagnetic module; 31. winding a bobbin; 32. a coil; 33. a magnetic conduction frame; 34. fixing an iron core; 35. a movable iron core; 36. a return spring; 37. a gasket; 40. a flow-through chamber.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, the utility model provides a high sound velocity high seal on-off structure solenoid valve, including interconnect's protecgulum 10 and casing 20, protecgulum 10 is connected with integrative injection moulding's outlet duct 11 and the air flue 111 internal diameter of outlet duct 11 increases gradually and becomes 2-10 with the contained angle alpha of axial axis from the entry end to the exit end, casing 20 is connected with intake pipe 21 and bayonet joint 22, casing 20 is inside to be equipped with the electromagnetism module 30 of communicating with bayonet joint 22 electricity, forms circulation chamber 40 between protecgulum 10, casing 20 and the electromagnetism module 30; the electromagnetic module 30 comprises a bobbin 31 arranged inside the shell 20, a coil 32 wound on the bobbin 31 and electrically communicated with the plug 22, a fixed iron core 34 and a movable iron core 35 which are arranged inside the bobbin 31 and axially correspond to each other, a return spring 36 corresponding to the movable iron core 35, a magnetic conduction frame 33 arranged inside the shell 20 and simultaneously connected with the coil 32 and the fixed iron core 34, and a sealing gasket 37 fixedly arranged at the end part of the movable iron core 35 and corresponding to the air outlet pipe 11; the inlet end of the outlet pipe 11 is provided with a circle of protrusions 112 which are integrally injection-molded and correspond to the sealing gasket 37, and in the reset state, the outlet pipe 11 and the sealing gasket 37 are sealed through the contact of the protrusions 112 and the circumference of the sealing gasket 37.

After the utility model is assembled, in a reset state, the air outlet pipe 11 and the sealing gasket 37 are sealed in a linear sealing mode, and the front cover 10 is not easy to be affected by injection molding shrinkage deformation to cause poor sealing, so that the product sealing can be better realized; after the power is switched on, the fixed iron core 34 sucks the movable iron core 35 to make the movable iron core 35 drive the sealing gasket 37 to separate from the protrusion 112 of the air outlet pipe 11 and compress the return spring 36, so that the gas can enter the air channel 111 from the circulation cavity 40 through the gap between the sealing gasket 37 and the protrusion 112; by setting the air passage 111 to have a gradually-changed diameter from small to large, the sound velocity effect of small air pressure and large flow can be realized after air flow enters the air passage 111, so that the desorption of the system is cleaner; after the power failure, the fixed iron core 34 no longer holds the movable iron core 35, and the movable iron core 35 is reset under the action of the reset spring 36 and the sealing gasket 37 is sealed with the protrusion 112 in line contact again.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The electromagnetic valve is characterized by comprising a front cover (10) and a shell (20) which are connected with each other, wherein the front cover (10) is connected with an air outlet pipe (11), the inner diameter of an air passage (111) of the air outlet pipe (11) is gradually increased from an inlet end to an outlet end, the shell (20) is connected with an air inlet pipe (21) and a plug-in connector (22), an electromagnetic module (30) which is electrically communicated with the plug-in connector (22) is assembled in the shell (20), and a circulation cavity (40) is formed among the front cover (10), the shell (20) and the electromagnetic module (30);

the electromagnetic module (30) comprises a winding frame (31) arranged inside the shell (20), a coil (32) wound on the winding frame (31) and electrically communicated with the plug connector (22), a fixed iron core (34) and a movable iron core (35) which are arranged inside the winding frame (31) and axially correspond to each other, a reset spring (36) corresponding to the movable iron core (35), a magnetic conduction frame (33) arranged inside the shell (20) and simultaneously connected with the coil (32) and the fixed iron core (34), and a sealing gasket (37) fixedly arranged at the end part of the movable iron core (35) and corresponding to the air outlet pipe (11);

the entry end of outlet duct (11) is provided with the round and corresponds protruding (112) of sealed pad (37), and under the reset state, outlet duct (11) and sealed pad (37) pass through protruding (112) and the circumference line contact realization of sealed pad (37) are sealed.

2. The electromagnetic valve with high sound speed and high sealing on-off structure as claimed in claim 1, wherein the front cover (10) and the air outlet pipe (11) are integrally injection molded.

3. The electromagnetic valve with high sound velocity and high sealing on-off structure as claimed in claim 2, wherein the air outlet pipe (11) and the protrusion are integrally injection molded.

4. The electromagnetic valve with high sound speed and high sealing on-off structure as claimed in claim 1, wherein the angle α between the axial inner wall of the air outlet pipe (11) and the axial axis is 2-10 °.