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CN-117927721-B - Proportional solenoid valve

CN117927721BCN 117927721 BCN117927721 BCN 117927721BCN-117927721-B

Abstract

The present application relates to a proportional solenoid valve. The proportional electromagnetic valve comprises a valve body assembly, a static iron assembly, a coil assembly and a moving iron assembly, wherein the valve body assembly comprises a shell, a valve seat and a valve head, the valve seat is connected with the shell, the valve head is arranged in the valve seat, the valve seat is provided with a first accommodating cavity, the shell is provided with a second accommodating cavity, the first accommodating cavity is communicated with the second accommodating cavity, the valve head is provided with an input channel, the valve seat is provided with an output channel, the input channel and the output channel are both communicated with the first accommodating cavity, the static iron assembly is arranged on the shell, the coil assembly is arranged around the static iron assembly, the moving iron assembly is movably arranged in the first accommodating cavity and the second accommodating cavity, the moving iron assembly comprises a moving iron, a valve core and a spring sheet, the moving iron is connected with the valve core, the valve core is movably abutted to the input channel of the valve head, the spring sheet is arranged on the shell, and the moving iron is connected with the spring sheet, and the spring sheet is used for applying pressure towards the valve head to the moving iron. The proportional electromagnetic valve has the advantages of high control precision and simplicity in processing.

Inventors

  • HUANG JIANNAN
  • ZHANG JUNFAN
  • WU PEIHONG

Assignees

  • 深圳市安保医疗科技股份有限公司

Dates

Publication Date
20260512
Application Date
20240125

Claims (10)

  1. 1. A proportional solenoid valve, comprising: The valve body assembly (100), the valve body assembly (100) comprises a shell (110), a valve seat (120) and a valve head (130), the valve seat (120) is connected with the shell (110), the valve head (130) is movably arranged in the valve seat (120), the valve seat (120) is provided with a first accommodating cavity (120B), the shell (110) is provided with a second accommodating cavity (110A), the first accommodating cavity (120B) is communicated with the second accommodating cavity (110A), the valve head (130) is provided with an input channel (130A), the valve seat (120) is provided with an output channel (120A), and the input channel (130A) and the output channel (120A) are both communicated with the first accommodating cavity (120B); A static iron assembly (200) and a coil assembly (300), the static iron assembly (200) being mounted to an end of the housing (110) remote from the valve head (130), the coil assembly (300) being disposed around the static iron assembly (200); Move indisputable subassembly (400), move indisputable subassembly (400) movably set up in first holding chamber (120B) and second holding chamber (110A), move indisputable subassembly (400) including moving indisputable (410), case (420) and shell fragment (430), move indisputable (410) with case (420) are connected, case (420) movably butt in valve head (130) on input channel (130A), shell fragment (430) install in shell (110), move indisputable (410) with shell fragment (430) are connected, shell fragment (430) are used for right move indisputable (410) applys the orientation valve head (130) pressure.
  2. 2. The proportional solenoid valve of claim 1, wherein: The movable iron assembly (400) further comprises a connecting piece (440), the movable iron (410) and the valve core (420) are connected through the connecting piece (440), the outer periphery of the elastic piece (430) is connected with the shell (110), a through hole is formed in the center of the elastic piece (430), a boss (441) is arranged on the connecting piece (440), the connecting piece (440) penetrates through the through hole and is connected with the movable iron (410), and the elastic piece (430) is clamped between the boss (441) and the movable iron (410).
  3. 3. The proportional solenoid valve of claim 2, wherein: The movable iron assembly (400) further comprises a diaphragm (450) and a pressing plate (460), the diaphragm (450) is arranged on the end face of the valve seat (120) in a covering mode, the pressing plate (460) is arranged on the joint of the diaphragm (450) and the valve seat (120) in a covering mode, the connecting piece (440) is connected with the valve core (420) through the diaphragm (450), and the diaphragm (450) is arranged between the boss (441) and the valve core (420) in a clamping mode.
  4. 4. A proportional solenoid valve according to claim 3, wherein: The connecting piece (440) is provided with a communication channel (440A), and the communication channel (440A) is used for communicating the input channel (130A) and the second accommodating cavity (110A).
  5. 5. The proportional solenoid valve of claim 1, wherein: The valve core (420) further comprises a sealing piece (421), and the sealing piece (421) is arranged at the position where the valve core (420) abuts against the valve head (130).
  6. 6. The proportional solenoid valve of claim 1, wherein: The valve head (130) is connected with the valve seat (120) through a screw thread pair, the valve head (130) is provided with a locking ring (131), and the locking ring (131) is used for locking or unlocking the valve head (130) and the valve seat (120).
  7. 7. The proportional solenoid valve of any one of claims 1-6, wherein: The static iron assembly (200) comprises a static iron (210) and an adjusting rod (220), the static iron (210) is installed on the end face of the valve head (130) away from the shell (110), the static iron (210) is provided with an adjusting through hole (210A), the adjusting rod (220) is movably arranged in the adjusting through hole (210A), one end of the adjusting rod (220) away from the moving iron (410) is provided with an adjusting part, one end of the adjusting rod (220) facing the moving iron (410) is provided with an abutting part, and the abutting part is used for abutting the moving iron (410).
  8. 8. The proportional solenoid valve of claim 7, wherein: The coil assembly (300) comprises a coil framework (320) and a coil (310), wherein the coil framework (320) is arranged around the static iron (210), the coil (310) is arranged around the coil framework (320), and a corrugated elastic sheet (330) is arranged between the end part of the coil framework (320) and the static iron (210).
  9. 9. The proportional solenoid valve of claim 8, wherein: The coil assembly (300) further comprises a wire plug (340) and a lead wire (350), the housing (110) is provided with a mounting groove, the wire plug (340) is mounted in the mounting groove, and the lead wire (350) is connected with the coil (310) through the wire plug (340).
  10. 10. The proportional solenoid valve of claim 7, wherein: The static iron (210), the moving iron (410), the valve core (420) and the valve head (130) are arranged along the same axis.

Description

Proportional solenoid valve Technical Field The application relates to the technical field of electromagnetic valves, in particular to a proportional electromagnetic valve. Background The proportional electromagnetic valve is an electromagnetic valve which can accurately control the input or output of the gas or liquid flow through a current or PWM mode, and is widely applied to the fields of medical treatment, automobiles and the like. Most of proportional solenoid valves on the market are not ideal in linearity and hysteresis curves, are complicated to debug, and are difficult to meet the requirements of high-precision control in the medical industry. And the valve body of the traditional electromagnetic valve is integrally machined, so that the electromagnetic valve has the defects of high machining difficulty, high machining cost, low control accuracy and the like. Disclosure of Invention Accordingly, it is necessary to provide a proportional solenoid valve for solving the problems of the proportional solenoid valve such as high difficulty in processing and low control accuracy. A proportional solenoid valve, comprising: The valve body assembly comprises a shell, a valve seat and a valve head, wherein the valve seat is connected with the shell, the valve head is movably arranged in the valve seat, the valve seat is provided with a first accommodating cavity, the shell is provided with a second accommodating cavity, the first accommodating cavity is communicated with the second accommodating cavity, the valve head is provided with an input channel, the valve seat is provided with an output channel, and the input channel and the output channel are both communicated with the first accommodating cavity; The static iron assembly is arranged at the end part of the shell, which is far away from the valve head, and the coil assembly is arranged around the static iron assembly; The movable iron component is movably arranged in the first accommodating cavity and the second accommodating cavity, and comprises a movable iron, an elastic sheet and a valve core, wherein the movable iron is connected with the valve core, the valve core is movably abutted to the input channel of the valve head, the elastic sheet is arranged on the shell, the movable iron is connected with the elastic sheet, and the elastic sheet is used for applying pressure towards the valve head to the movable iron. In one embodiment, the moving iron assembly further comprises a connecting piece, the moving iron and the valve core are connected through the connecting piece, the outer periphery of the elastic piece is connected with the shell, a through hole is formed in the center of the elastic piece, a boss is arranged on the connecting piece, the connecting piece penetrates through the through hole and is connected with the moving iron, and the elastic piece is clamped between the boss and the moving iron. In one embodiment, the moving iron assembly further comprises a diaphragm and a pressing plate, the diaphragm is arranged on the end face of the valve seat in a covering mode, the pressing plate is arranged on the joint of the diaphragm and the valve seat in a covering mode, the connecting piece is connected with the valve core through the diaphragm, and the diaphragm is clamped between the boss and the valve core. In one embodiment, the connecting piece is provided with a communication channel, and the communication channel is used for communicating the input channel and the second accommodating cavity. In one embodiment, the valve core further comprises a sealing element, and the sealing element is arranged at a position where the valve core abuts against the valve head. In one embodiment, the valve head and the valve seat are connected through a screw pair, and the valve head is provided with a locking ring for locking or unlocking the valve head and the valve seat. In one embodiment, the static iron assembly comprises a static iron and an adjusting rod, the static iron is arranged on the end face of the shell, which is far away from the valve head, the static iron is provided with an adjusting through hole, the adjusting rod is movably arranged in the adjusting through hole, one end of the adjusting rod, which is far away from the moving iron, is provided with an adjusting part, one end of the adjusting rod, which faces the moving iron, is provided with an abutting part, and the abutting part is used for abutting the moving iron. In one embodiment, the coil assembly comprises a coil former and a coil, the coil former is arranged around the static iron, the coil is arranged around the coil former, and a corrugated elastic sheet is arranged between the end part of the coil former and the static iron. In one embodiment, the coil assembly further comprises a wire insert and a lead, the housing is provided with a mounting groove, the wire insert is mounted in the mounting groove, and the lead is connected with the coil through the wire insert. In