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CN-121993657-A - Pressure sensing feedback double closed-loop control electromagnetic valve

CN121993657ACN 121993657 ACN121993657 ACN 121993657ACN-121993657-A

Abstract

The invention discloses a pressure sensing feedback double closed-loop control electromagnetic valve, which belongs to the technical field of electromagnetic valves and comprises a shell mechanism, a high-frequency valve mechanism, a first air tap mechanism, a regulating valve mechanism, a second air tap mechanism, a pressure sensing mechanism and a control mechanism, wherein three high-frequency valve mechanisms are arranged on the shell mechanism. According to the invention, through the arrangement of the regulating valve mechanism and the second air tap mechanism, the device can form back pressure at the outlet air tap end of the regulating valve, so that the power of the electromagnet can be reduced after the regulating valve is opened, the energy consumption of the device is effectively reduced, the device can carry out secondary regulation on air pressure through the regulating valve through the arrangement of the high-frequency valve mechanism, the regulating valve mechanism, the pressure sensing mechanism and the control mechanism, the outlet air pressure precision of the device is improved, the real-time feedback double closed-loop control of the high-frequency valve and the regulating valve is realized, and the stability of the outlet air pressure of the device is further improved.

Inventors

  • ZHANG YONGPENG
  • LI CHENGSHUAI
  • WANG XUESHENG

Assignees

  • 新乡市长空机电设备有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (10)

  1. 1. The pressure sensing feedback double closed-loop control electromagnetic valve comprises a shell mechanism (1), a high-frequency valve mechanism (2), a first air nozzle mechanism (3), a regulating valve mechanism (4), a second air nozzle mechanism (5), a pressure sensing mechanism (6) and a control mechanism (7), and is characterized in that three high-frequency valve mechanisms (2) are installed on the shell mechanism (1), one end of the high-frequency valve mechanism (2) is fixedly provided with the first air nozzle mechanism (3), and the regulating valve mechanism (4) is installed on the shell mechanism (1); The air valve is characterized in that a second air valve mechanism (5) is fixed on the regulating valve mechanism (4), the second air valve mechanism (5) comprises a second air valve body (501), a back pressure air cavity (502) is formed in one end of the inner part of the second air valve body (501), an anti-blocking aluminum cover (503) is fixed on the inner side of the back pressure air cavity (502), a filter screen (504) is fixed on the inner side of the anti-blocking aluminum cover (503), a throttling cover (505) is arranged on the top of the anti-blocking aluminum cover (503) in a fitting mode, a throttling small hole (506) is formed in the throttling cover (505), a second valve core (507) is connected to the inner side of the second air valve body (501) in a sliding mode, a fifth air passage (508) is formed in the inner part of the second valve core (507), and a plurality of sixth air passages (509) are communicated with the top end of the fifth air passage (508). The pressure sensor is characterized in that the pressure sensor (6) is fixedly arranged on the shell mechanism (1), the control mechanism (7) is connected with the shell mechanism (1) in a screwed mode, the control mechanism (7) comprises a circuit board (701), and a main control chip (702) is welded on the circuit board (701).
  2. 2. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 1, wherein the housing mechanism (1) comprises a housing body (101), one end of the housing body (101) is connected with a first one-way valve (102) and a second one-way valve (103) in a sealing manner, and the other end of the housing body (101) is connected with an outlet joint (104) in a sealing manner.
  3. 3. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 2, wherein a first mounting groove (105), a second mounting groove (106) and a third mounting groove (107) are formed in the top of the housing body (101), an insulating support (108) is fixed in the housing body (101), a cover plate (109) is screwed to the bottom of the housing body (101), a first air passage (110) and a second air passage (111) are formed in the housing body (101), the inner side wall of the first mounting groove (105) is communicated with the first air passage (110), the bottom ends of the first mounting groove (105), the second mounting groove (106) and the third mounting groove (107) are communicated with the second air passage (111), the first one-way valve (102) and the second one-way valve (103) are communicated with the first air passage (110), and the outlet joint (104) is communicated with the tail end of the second air passage (111).
  4. 4. A pressure sensing feedback double closed-loop control electromagnetic valve according to claim 3, characterized in that the high-frequency valve mechanism (2) comprises a first valve body (201) which is fixed with a first mounting groove (105) in a sealing manner, a first proportional electromagnet (202) is embedded and fixed in the first valve body (201), a first conducting wire (203) is connected to the top end of the first proportional electromagnet (202), a first iron core (205) is connected to the inner side of the first valve body (201) in a sliding manner, a first proportional spring (204) is arranged at one end of the first iron core (205), and a second proportional spring (206) is arranged at the other end of the first iron core (205).
  5. 5. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 4, wherein the first air nozzle mechanism (3) comprises a first air nozzle body (301) fixed at the bottom end of the first valve body (201), a first valve core (302) is slidably connected to the inner side of the first air nozzle body (301), the top end of the first valve core (302) is slidably arranged in the first iron core (205), a reverse edge anti-falling structure is arranged at the joint of the first valve core (302) and the first iron core (205), a spring groove (303) is formed in the top of the first valve core (302), a plurality of third air passages (304) are formed in an annular array on the inner side of the first air nozzle body (301), and an air outlet (305) is formed in the bottom of the first air nozzle body (301).
  6. 6. A pressure sensing feedback double closed-loop control electromagnetic valve according to claim 3, characterized in that the regulating valve mechanism (4) comprises a second valve body (401) which is fixed on the inner side of the third mounting groove (107) in a sealing way, a second proportional electromagnet (402) is embedded and fixed in the second valve body (401), and a fourth air passage (403) is formed in the second valve body (401).
  7. 7. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 6, wherein a second iron core (405) is slidably connected in the second valve body (401), a third proportional spring (404) is arranged at the bottom of the second iron core (405), a fourth proportional spring (406) is arranged in the second iron core (405), and a second conducting wire (407) is connected to the top end of the second proportional electromagnet (402).
  8. 8. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 1, wherein a gland (510) is fixed at the top of the second air tap body (501), an exhaust port (511) is formed in the gland (510), and the cross-sectional area of the throttle orifice (506) is smaller than the cross-sectional area of the fifth air passage (508) and the cross-sectional area of the sixth air passage (509).
  9. 9. A pressure sensing feedback double closed-loop control electromagnetic valve according to claim 3, characterized in that the pressure sensing mechanism (6) comprises a sensor body (601) sealed and fixed in the second mounting groove (106), a pressure transmitter (602) is fixed on the top of the sensor body (601), and the pressure transmitter (602) is electrically connected with the sensor body (601).
  10. 10. The pressure sensing feedback double closed-loop control electromagnetic valve according to claim 1, wherein the circuit board (701) is screwed on the insulating support (108), a program storage chip (703), a power management module (704), a high-precision operational amplifier chip (705), a driving chip (706) and an optocoupler isolation device (707) are welded on the circuit board (701), the program storage chip (703), the high-precision operational amplifier chip (705) and the driving chip (706) are electrically connected with the main control chip (702), and the main control chip (702), the driving chip (706) and the first proportional electromagnet (202), the second proportional electromagnet (402) and the pressure transmitter (602) are electrically connected.

Description

Pressure sensing feedback double closed-loop control electromagnetic valve Technical Field The invention belongs to the technical field of electromagnetic valves, and particularly relates to a pressure sensing feedback double closed-loop control electromagnetic valve. Background The electromagnetic valve is an automatic executive component for realizing on-off and reversing of a fluid passage by utilizing electromagnetic control, and the core consists of an electromagnetic control part and a valve body fluid control part, and works by relying on an electromagnetic induction principle. When the electromagnetic coil is electrified, the electromagnetic coil generates a magnetic field to drive the iron core to drive the valve core to axially move, the communication state of the through flow channel in the valve body is changed, the on/off or flow direction switching of fluid is realized, after the power is off, the iron core returns to the initial position under the action of the reset element, and the valve body restores to the original through flow state, so that one action cycle is completed. The device has the advantages of compact integral structure, high response speed, remote control of the electric signal, no need of manual operation, accurate matching of automatic control requirements, good sealing performance, suitability for various fluid media such as gas, liquid and the like, is a basic core component for realizing channel control in a fluid control system, and is widely applied to on-off and reversing control links of various automatic equipment and fluid pipeline systems. In the existing electromagnetic valve, the outlet of the regulating valve is directly used for discharging gas through the exhaust port, and the back pressure energy-saving structure is not provided, so that when the outlet of the electromagnetic valve is opened, in order to resist the reset elasticity of the spring, the electromagnet of the electromagnetic valve must always keep high power, so that the power consumption of the electromagnetic valve is larger, and the energy saving is not facilitated. In addition, the existing electromagnetic valve controls the pressure of fluid through a single valve, and does not have a secondary fine adjustment structure, so that the control precision of the fluid pressure is limited, and a small part of electromagnetic valve with the secondary fine adjustment structure does not have a double-closed-loop real-time feedback adjusting mechanism, so that the inlet pressure and the adjusting valve cannot be adjusted simultaneously according to the channel pressure, and when the pressure of the air inlet end is unstable, the electromagnetic valve is difficult to ensure the pressure stability of the output end. Disclosure of Invention The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a pressure sensing feedback double closed-loop control electromagnetic valve. The technical scheme for solving the technical problems is that the pressure sensing feedback double-closed-loop control electromagnetic valve comprises a shell mechanism, a high-frequency valve mechanism, a first air nozzle mechanism, a regulating valve mechanism, a second air nozzle mechanism, a pressure sensing mechanism and a control mechanism, wherein three high-frequency valve mechanisms are arranged on the shell mechanism, one end of the high-frequency valve mechanism is fixed with the first air nozzle mechanism, and the regulating valve mechanism is arranged on the shell mechanism; The regulating valve mechanism is fixedly provided with a second air tap mechanism, the second air tap mechanism comprises a second air tap body, one end of the interior of the second air tap body is provided with a back pressure air cavity, the inner side of the back pressure air cavity is fixedly provided with an anti-blocking aluminum cover, the inner side of the anti-blocking aluminum cover is fixedly provided with a filter screen, the top of the anti-blocking aluminum cover is provided with a throttling cover in a fitting manner, the throttling cover is provided with a throttling small hole, the inner side of the second air tap body is slidably connected with a second valve core, the interior of the second valve core is provided with a fifth air channel, and the top end of the fifth air channel is communicated with a plurality of sixth air channels; The pressure sensing mechanism is fixedly arranged on the shell mechanism, the control mechanism is connected with the shell mechanism in a screwed mode, the control mechanism comprises a circuit board, and a main control chip is welded on the circuit board. Further, the shell mechanism comprises a shell body, one end of the shell body is connected with a first one-way valve and a second one-way valve in a sealing mode, and the other end of the shell body is connected with an outlet joint in a sealing mode. Through above-mentioned technical scheme, t