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CN-121452359-B - Split electromagnetic valve

CN121452359BCN 121452359 BCN121452359 BCN 121452359BCN-121452359-B

Abstract

The application discloses a split electromagnetic valve, and belongs to the technical field of electromagnetic valves. The magnetic conduction device comprises a driving coil assembly and a valve body assembly, wherein the driving coil assembly comprises a shell, a driving coil, a magnetic conduction cover and a second magnetic coupling piece, a first cavity and a second cavity are formed in the shell, the driving coil is wound in the second cavity, the magnetic conduction cover is arranged in the first cavity, the second magnetic coupling piece is arranged at the end part of the magnetic conduction cover, the valve body assembly comprises a valve body, a valve seat, a locking nut, a movable iron core, the first magnetic coupling piece and a valve core reset spring, a matching channel and a fluid channel are arranged in the valve body, the valve seat is fixed at one end of the matching channel, and the locking nut is fixed at the other end of the matching channel. According to the application, the valve body and the driving coil are independent units, the problem that the electromagnetic valve cannot work normally under extreme temperature medium can be solved through heat insulation design, the electromagnetic interference problem can be effectively solved through electromagnetic shielding design of the driving coil, and the valve body and the driving coil can be quickly replaced and maintained independently.

Inventors

  • LIU HONGJUN
  • KOU JUNHUI
  • LI SONG
  • ZHANG ERPENG

Assignees

  • 陕西天回航天技术有限公司
  • 四川省天回航天科技有限公司

Dates

Publication Date
20260508
Application Date
20260106

Claims (9)

  1. 1. A split solenoid valve comprising a drive coil assembly (100) and a valve body assembly (200), wherein the drive coil assembly (100) comprises: A housing (101), wherein a first cavity and a second cavity are arranged in the housing (101), and the second cavity surrounds the periphery of the first cavity; a driving coil (102) wound in the second cavity; The magnetic conduction cover (103) is arranged in the first cavity, and the magnetic conduction cover (103) is used for being matched with the driving coil (102) so as to generate magnetic force after the driving coil (102) is electrified; The second magnetic coupling piece (104) is arranged at the end part of the magnetic conduction cover (103) and is used for transmitting magnetic force generated by the magnetic conduction cover (103); The valve body assembly (200) includes: A valve body (201), wherein a matching channel and a fluid channel (208) are arranged in the valve body (201), and the fluid channel (208) is communicated with the matching channel; The valve seat (202) is fixed at one end of the matching channel, a through fluid inlet channel is formed in the valve seat (202), and the fluid inlet channel is communicated with the matching channel; the locking nut (210) is fixed at the other end of the matching channel, a through matching hole is formed in the locking nut (210) along the axial direction of the matching channel, and the matching hole is opposite to the second magnetic coupling piece (104); The movable iron core (203) is movably arranged in the matching channel, one end of the movable iron core (203) close to the matching hole is movably matched in the matching hole, a blind hole is formed in one end of the movable iron core (203) close to the matching hole, and when the movable iron core (203) moves to be in contact with the valve seat (202), a gap exists between the movable iron core (203) and the second magnetic coupling piece (104); the first magnetic coupling piece (205) is arranged in the blind hole and is used for being connected with the second magnetic coupling piece (104) through magnetic force fit; A valve core return spring (206) arranged between the movable iron core (203) and the lock nut (210) and used for driving the movable iron core (203) to return; An exhaust hole is formed in one end, far away from the valve body assembly (200), of the shell (101) and is used for exhausting redundant gas in the shell (101), and a dust cover (106) is arranged at the outlet of the exhaust hole; The driving coil assembly (100) is in butt joint with the valve body assembly (200) in a threaded connection mode, the second magnetic coupling piece (104) and the first magnetic coupling piece (205) are permanent magnets, and the magnetic poles of the faces, opposite to the first magnetic coupling piece (205), of the second magnetic coupling piece (104) are opposite to the magnetic poles of the faces, opposite to the first magnetic coupling piece (205).
  2. 2. The split solenoid valve of claim 1, wherein said drive coil assembly (100) further comprises: And an electrical connector (107) disposed on one side of the housing (101) and connected to a power source for supplying current to the driving coil (102).
  3. 3. The split electromagnetic valve according to claim 1, wherein a guide post is further disposed in the first cavity of the housing (101), a return spring (105) is disposed on the periphery of the guide post, the magnetic conductive cover (103) is movably disposed on the guide post, and the return spring (105) abuts against the magnetic conductive cover (103).
  4. 4. The split solenoid valve according to claim 1, characterized in that a first sealing ring (207) and a second sealing ring (209) are provided between the housing (101) and the valve body (201).
  5. 5. A split solenoid valve according to claim 1, characterised in that a third sealing ring (211) is provided between said valve seat (202) and said valve body (201).
  6. 6. The split solenoid valve according to claim 1, characterized in that a fourth sealing ring (212) is provided between the plunger (203) and the lock nut (210).
  7. 7. A split solenoid valve according to claim 1, wherein a gasket is provided on the face of the plunger (203) that contacts the fluid inlet passage.
  8. 8. The split solenoid valve of claim 1, wherein said valve body assembly (200) further comprises: the static iron core (204) is fixedly arranged in the matching channel, and the movable iron core (203) is movably arranged in the static iron core (204).
  9. 9. A split solenoid valve according to any one of claims 1 to 8, wherein said housing (101) is of plastic material and said valve body (201) is of metal material.

Description

Split electromagnetic valve Technical Field The application relates to the technical field of electromagnetic valves, in particular to a split electromagnetic valve. Background Electromagnetic valves are basic elements for controlling automatic switching of fluid passages by electromagnetic force, and are widely applied to the fields of industrial automation, medical equipment, household appliances, aerospace and the like. The working principle of the traditional electromagnetic valve is that when the electromagnetic valve is electrified, the electromagnetic force generated by the electromagnetic coil lifts the valve core from the valve seat, the valve is opened, when the electromagnetic force is disconnected, the electromagnetic force is eliminated, the compression spring presses the valve core on the valve seat, and the valve is closed. The electromagnetic valve has the advantage of high response speed, and is suitable for occasions with high use frequency and quick closing. The coil of the conventional solenoid valve is usually connected to the valve body through a cable and a connector, however, based on this connection, the cable and the connector are affected by the temperature of the medium flowing through the valve body, etc. during long-term use of the solenoid valve. Moreover, the existing electromagnetic valve is easy to be subjected to electromagnetic interference and is difficult to maintain. Disclosure of Invention The application mainly aims to provide a split electromagnetic valve, which aims to solve the problems that the connection between a coil and a valve body of the existing electromagnetic valve through a cable and a connector is easily affected by medium temperature and the like, electromagnetic interference and difficult maintenance. The application provides a split electromagnetic valve, which comprises a driving coil assembly and a valve body assembly, wherein the driving coil assembly comprises a shell, a driving coil, a magnetic conduction cover and a second magnetic coupling piece, a first cavity and a second cavity are arranged in the shell, and the second cavity surrounds the periphery of the first cavity; the driving coil is wound in the second cavity, the magnetic conduction cover is arranged in the first cavity and is used for being matched with the driving coil to generate magnetic force after the driving coil is electrified, the second magnetic coupling piece is arranged at the end part of the magnetic conduction cover and is used for transmitting the magnetic force generated by the magnetic conduction cover, the valve body assembly comprises a valve body, a valve seat, a lock nut, a movable iron core, a first magnetic coupling piece and a valve core reset spring, wherein a matching channel and a fluid channel are arranged in the valve body and are communicated with the matching channel, the valve seat is fixed at one end of the matching channel, a through fluid inlet channel is formed in the valve seat and is communicated with the matching channel, the lock nut is fixed at the other end of the matching channel, a through matching hole is formed in the lock nut along the axial direction of the matching channel and is opposite to the second magnetic coupling piece, the movable iron core is movably arranged in the matching channel, when the movable iron core is close to the matching hole and moves close to one end of the matching channel and is contacted with the movable iron core when the movable iron core is close to the blind hole, the movable iron core is connected with the second magnetic coupling piece in a magnetic fit mode, a gap exists between the movable iron core and the second magnetic coupling piece, the first magnetic coupling piece is arranged in the blind hole and used for being connected with the second magnetic coupling piece in a magnetic fit mode, and the valve core reset spring is arranged between the movable iron core and the locking nut and used for driving the movable iron core to reset. Optionally, the driving coil assembly further comprises an electric connector, wherein the electric connector is arranged on one side of the shell and is connected with a power supply, and the power supply is used for supplying current to the driving coil. Optionally, a guide post is further disposed in the first cavity of the housing, a return spring is disposed on the periphery of the guide post, the magnetic conductive cover is movably disposed on the guide post, and the return spring is abutted to the magnetic conductive cover. Optionally, a first sealing ring and a second sealing ring are arranged between the shell and the valve body. Optionally, a third sealing ring is arranged between the valve seat and the valve body. Optionally, a fourth sealing ring is arranged between the movable iron core and the locking nut. Optionally, a sealing gasket is arranged on the surface, which is contacted with the fluid inlet channel, of the movable iron core. Optionally, one