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CN-121976985-A - Intelligent control type pneumatic electromagnetic valve for duplex energy-saving hydraulic station

CN121976985ACN 121976985 ACN121976985 ACN 121976985ACN-121976985-A

Abstract

The invention relates to the technical field of pneumatic electromagnetic valves, in particular to an intelligent control type pneumatic electromagnetic valve for a duplex energy-saving hydraulic station, which comprises a valve body, wherein the upper end of the valve body is provided with an air inlet, the lower end of the valve body is provided with an air outlet, the interior of the valve body is horizontally provided with a valve cavity, the valve cavity consists of a reset cavity, a middle cavity, an air inlet cavity, a conical cavity, an air outlet cavity and a sealing cavity, the valve cavity is rotationally connected with a valve core, one ends of the valve core, which are arranged in the reset cavity and the middle cavity, are provided with air collecting chambers, a first air supply groove and a second air supply groove which are respectively communicated with each other and are arranged in a valve core shaft, and the valve core is respectively provided with a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring. The invention solves the problems of poor adaptability of the fluctuation of the air inlet pressure of the existing pneumatic electromagnetic valve and insufficient sealing reliability of the valve cavity.

Inventors

  • ZHANG XIAOLIN
  • Ding Tengma
  • XIE TENGTENG
  • HUANG QIANG

Assignees

  • 华莱(常州)液压科技有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (8)

  1. 1. The utility model provides an energy-conserving hydraulic pressure station of duplex is with intelligent control formula pneumatic solenoid valve, includes valve body (1), its characterized in that: The upper end of the valve body (1) is provided with an air inlet (2), and the lower end of the valve body (1) is provided with an air outlet (6); The valve is characterized in that a valve cavity (8) is horizontally formed in the valve body (1), the valve cavity (8) consists of a reset cavity (801), a middle cavity (802), an air inlet cavity (803), a conical cavity (804), an exhaust cavity (805) and a sealing cavity (806), and a valve core (9) is rotationally connected to the valve cavity (8); one end of the valve core (9) arranged in the reset cavity (801) and one end of the middle cavity (802) are provided with a gas collection chamber (12), a first gas supply groove (14) and a second gas supply groove (15) which are arranged in the shaft of the valve core (9) are respectively communicated with the gas collection chamber (12), and the valve core (9) is provided with a first sealing ring (17), a second sealing ring (19), a third sealing ring (22) and a fourth sealing ring (26) respectively; The bottom wall of the air inlet cavity (803) is provided with a pressure chamber (27), a baffle plate (28) is connected in the pressure chamber (27) in a sliding way, the bottom end of the baffle plate (28) is fixedly connected with a withdrawal rod (30), the bottom end of the withdrawal rod (30) is provided with a U-shaped groove (31), the bottom of the valve body (1) is provided with a pressure relief opening (7) communicated with the pressure chamber (27), the inner wall of the top end of the pressure chamber (27) is provided with a fourth air supply groove (32), and the other end of the fourth air supply groove (32) is communicated with the pressure relief opening (7); A second spring (29) is arranged in the pressure chamber (27), the upper end and the lower end of the second spring (29) are respectively fixed on the bottom end of the baffle plate (28) and the bottom wall of the pressure chamber (27), and the second spring (29) is sleeved on the rod body of the retraction rod (30); When the pressure in the pressure chamber (27) exceeds a critical value, the baffle (28) and the unseating rod (30) are lowered to the lowest position, and at this time, the pressure relief opening (7), the U-shaped groove (31) and the fourth air supply groove (32) are communicated.
  2. 2. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station, which is disclosed in claim 1, is characterized in that an end cover (5) is fixedly arranged at one end part of the valve body (1), an electromagnetic coil (3) is fixedly arranged at the other end part of the valve body (1), and a wiring port (4) is fixedly arranged on the electromagnetic coil (3).
  3. 3. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station according to claim 2, wherein the end cover (5) is provided with a mounting groove (501) towards one end of the reset cavity (801), a first spring (11) is arranged in the reset cavity (801), two ends of the first spring (11) are fixedly connected with the inner wall of the mounting groove (501) and the end part of the valve core (9) respectively, a fixing rod (10) is fixedly connected to the inner wall of the mounting groove (501), the first spring (11) is sleeved on a rod body of the fixing rod (10), and one end of the fixing rod (10) arranged in the gas collection chamber (12) is fixedly connected with a push plate (13).
  4. 4. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station according to claim 1, wherein the communication position of the first air supply groove (14) and the air collection chamber (12) is located at one end, close to the end cover (5), of the air collection chamber (12), and the communication position of the second air supply groove (15) and the air collection chamber (12) is located at one end, far away from the end cover (5), of the air collection chamber (12).
  5. 5. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station according to claim 1, wherein the valve core (9) is arranged on the shaft body of the middle cavity (802) and is provided with a first annular groove (16) communicated with the second air supply groove (15), and the first sealing ring (17) is arranged in the groove of the first annular groove (16).
  6. 6. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station according to claim 1, wherein the valve core (9) is fixedly connected with a first fixed ring (18) on the shaft body of the air inlet cavity (803), the valve core (9) is fixedly connected with a second fixed ring (21) on the shaft body of the conical cavity (804), the second sealing ring (19) is arranged on the outer ring of the first fixed ring (18), an inner groove (20) communicated with the first air supply groove (14) is formed in the inner ring of the second sealing ring (19), and the third sealing ring (22) is arranged on the outer ring of the second fixed ring (21).
  7. 7. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station according to claim 1, wherein a third fixing ring (23) is fixedly connected to the shaft body of a valve core (9) arranged in the exhaust cavity (805) and the sealing cavity (806), a third air supply groove (24) is formed in the ring body of the third fixing ring (23) arranged in the exhaust cavity (805), a second annular groove (25) communicated with the third air supply groove (24) is formed in the ring body of the third fixing ring (23) arranged in the sealing cavity (806), and a fourth sealing ring (26) is arranged in the groove of the second annular groove (25).
  8. 8. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station, as claimed in claim 1, is characterized in that a valve (33) is fixedly arranged at a port of the pressure relief opening (7), and a pressure sensor (34) is fixedly arranged on the valve (33).

Description

Intelligent control type pneumatic electromagnetic valve for duplex energy-saving hydraulic station Technical Field The invention relates to the technical field of pneumatic electromagnetic valves, in particular to an intelligent control type pneumatic electromagnetic valve for a duplex energy-saving hydraulic station. Background In the duplex energy-saving hydraulic station, the pneumatic electromagnetic valve is generally used for controlling the on-off and reversing of compressed air so as to drive the hydraulic valve group to realize the switching, unloading and loading of the double pumps, thereby achieving the purposes of energy saving and efficiency improvement. However, the following technical problems still exist in the practical application of the pneumatic solenoid valve for hydraulic stations: Firstly, the problem of poor adaptability of intake pressure fluctuation exists, the working environment of the duplex energy-saving hydraulic station is complex, the air source is often not independently supplied, the air source is easily influenced by factors such as pressure fluctuation of a workshop pipe network and simultaneous air utilization of multiple devices, when the pressure of air conveyed by an air inlet (P port) is suddenly overlarge or instantaneously bounces, an effective pressure buffering and discharging mechanism is lacking in a valve cavity of the existing electromagnetic valve, continuous high-pressure impact can directly act on the end face of a valve core, impact force between the valve core and a valve body is increased, and valve core clamping stagnation or accelerated abrasion of a sealing element is caused. Secondly, the reliability of the valve cavity sealing structure is insufficient, in frequent reversing actions, the connection parts of the valve core and the valve body and the air ports face severe sealing tests, and particularly under the working condition that the air pressure is unstable, the existing sealing structure is difficult to consider the motion flexibility and the static sealing performance, the valve core is easy to cause abrasion of a sealing ring due to long-term reciprocating motion, internal leakage is generated, the pilot air pressure cannot be built or maintained, and misoperation of the hydraulic valve is caused. Disclosure of Invention The invention aims to provide an intelligent control type pneumatic electromagnetic valve for a duplex energy-saving hydraulic station, which is used for solving the problems of large fluctuation of air inlet pressure and insufficient reliability of a valve cavity sealing structure in the background technology. The intelligent control type pneumatic electromagnetic valve for the duplex energy-saving hydraulic station comprises a valve body, wherein an air inlet is formed in the upper end of the valve body, an air outlet is formed in the lower end of the valve body, a valve cavity is horizontally formed in the valve body, the valve cavity consists of a reset cavity, a middle cavity, an air inlet cavity, a conical cavity, an air exhaust cavity and a sealing cavity, a valve core is rotatably connected to the valve cavity, one ends of the valve core, which are arranged in the reset cavity and the middle cavity, are provided with an air collection chamber, a first air supply groove and a second air supply groove which are formed in the valve core are respectively communicated with the air collection chamber, a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring are respectively arranged on the valve core, a pressure chamber is formed in the bottom wall of the air inlet cavity, a baffle plate is connected in a sliding mode, a return rod is fixedly connected to the bottom end of the baffle plate, a U-shaped groove is formed in the bottom of the valve body, an air collection chamber is communicated with the valve core, a fourth air supply groove is formed in the inner wall of the top end of the pressure chamber, and the fourth air supply groove is communicated with the fourth air supply groove. Further, an end cover is fixedly arranged at one end of the valve body, an electromagnetic coil is fixedly arranged at the other end of the valve body, and a wiring port is fixedly arranged on the electromagnetic coil. Further, the mounting groove has been seted up towards the one end in chamber that resets to the end cover, be equipped with first spring in the chamber that resets, the both ends of first spring are fixed connection respectively at the inner wall of mounting groove and the tip of case, fixedly connected with dead lever on the inner wall of mounting groove, first spring cover is established on the shaft of dead lever, the one end fixedly connected with push pedal in the plenum is arranged in to the dead lever. Further, the communication part of the first air supply groove and the air collection chamber is positioned at one end of the air collection chamber close to the end cover, and th