Intelligent opening and closing control device and method for explosion-proof cover of ventilator

Abstract

The invention discloses an intelligent opening and closing control device and method for an explosion-proof cover of a ventilator, and the device comprises a control module which is used for the input and output of an integrated signal; the opening and closing module is used for driving the explosion-proof cover to be quickly opened and closed through cooperation of the control module; the sensing module is used for detecting faults of a main pressure sensor and an auxiliary pressure sensor arranged in the opening and closing module and giving an alarm in time, the sensing module comprises a vacuum electromagnetic starter and a proximity switch, and the proximity switch is matched with the control module to achieve intelligent control and management work of the explosion-proof cover; the monitoring module is used for being matched with the control module to achieve remote intelligent monitoring and management of opening and closing of the anti-explosion cover, intelligent control and management of the anti-explosion cover of the ventilator are achieved, and the safety, reliability and intelligent level of a coal mine ventilation system can be effectively improved; and a powerful guarantee is provided for safe production and intelligent development of coal mine enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine ventilation systems, and in particular to an intelligent opening and closing control device for an explosion-proof cover of a ventilator and a method thereof. Background Art

[0002] During the operation of the main ventilation fan, the reliable opening and closing of the explosion-proof cover is crucial. When a gas or coal dust explosion occurs underground, the powerful shock wave will break open the explosion-proof cover to release energy and protect the main ventilation equipment from damage. The cylinder plays an important role in controlling the opening and closing of the explosion-proof cover.

[0003] However, in the coal mine ventilation system, the traditional fan explosion-proof cover supervision and operation process are backward. The safety, reliability and intelligence level of the coal mine ventilation system are low during use, and there are great safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent opening and closing control device and method for a ventilator explosion-proof cover, so as to solve the problem raised in the above background technology that in the coal mine ventilation system, the traditional ventilator explosion-proof cover supervision and operation process are backward, the safety, reliability and intelligence level of the coal mine ventilation system are low during use, and there are great safety hazards.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an intelligent opening and closing control device for a fan explosion-proof cover, comprising A control module, used for integrating the input and output of signals, the control module comprising a control box assembly and a main ventilator, the control box assembly comprising a control box body; An opening and closing module, used to drive the explosion-proof cover to open and close quickly through the cooperation of the control module, the opening and closing module is composed of a quick connection component, a sensor component, an uninterruptible power supply and a solenoid valve, the quick connection component is used to drive the explosion-proof cover to open and close, the sensor component includes a main pressure sensor and an auxiliary pressure sensor, and the uninterruptible power supply is used to power the equipment; A sensing module, used for detecting faults of the main pressure sensor and the auxiliary pressure sensor provided in the opening and closing module and giving timely alarms, wherein the sensing module includes a vacuum electromagnetic starter and a proximity switch, and the proximity switch cooperates with the control module to realize intelligent control and management of the explosion-proof cover; And a monitoring module, which is used to cooperate with the control module to realize remote intelligent monitoring and management of the opening and closing of the explosion-proof cover. The monitoring module includes a remote monitoring component, and the remote monitoring component includes a camera and a hard disk recorder. The camera is a network ball camera, and the number of the camera matches the number of the hard disk recorders.

[0006] In a preferred embodiment: the control box body adopts a mining explosion-proof and intrinsically safe PLC programmable control box, and the control box assembly also includes a touch screen and a controller. The controller is electrically connected to the lower end of the touch screen. The touch screen is used to realize remote, manual, and automatic control processes, and supports remote monitoring.

[0007] In a preferred embodiment: the quick connection assembly consists of a cylinder body, a cylinder lifting flange, a cylinder lever, a cylinder adjusting rod head, a pin guide tube, 4 groups of equally spaced pins and 4 explosion-proof electric push rods, which is used to automatically and quickly connect the cylinder and the pin guide tube when the explosion-proof cover is closed and the wind is reversed, and automatically withdraw when the fan is running. The lower end of the cylinder body is a cylinder lever, and a cylinder lifting flange is provided at the connection between the cylinder lever and the cylinder body. The lower end of the cylinder lever is connected to a cylinder adjusting rod head, and 4 groups of equally spaced pins are fixedly connected to the outer wall of the cylinder body. An opening matching the pin guide tube is provided on the cylinder lifting flange, and the pin guide tube is inserted into the opening when moving, and the pin guide tube is driven to move by an explosion-proof electric push rod provided at one end thereof.

[0008] In a preferred embodiment: the solenoid valve is a manually assisted mining explosion-proof three-position four-way solenoid valve, and the uninterruptible power supply is a mining cast-in-place and intrinsically safe DC voltage-stabilized uninterruptible power supply.

[0009] In a preferred embodiment, the controller output terminal is electrically connected to the solenoid valve.

[0010] In a preferred embodiment: the proximity switch adopts an intrinsically safe magnetic proximity switch, which detects the approach or distance state of the target object by inducing changes in the magnetic field, monitors the opening and closing positions of the explosion-proof cover and the entry and exit positions of the pins of the cylinder connection device, and serves as an important control and feedback signal for the control module.

[0011] In a preferred embodiment, the number of the cameras is three, and the monitoring module uses industrial gateway technology in conjunction with PLC to achieve remote intelligent monitoring and management.

[0012] In a preferred embodiment: the controller is electrically connected to the main fan, and according to the operating status of the main fan, combined with the opening and closing position switch of the explosion-proof cover, the explosion-proof cover and the main fan are controlled in linkage.

[0013] In a preferred embodiment: the vacuum electromagnetic starter signal is connected to a vacuum contactor, and the vacuum contactor serves as a main switch element to control the opening and closing of the hydraulic station oil pump motor.

[0014] A method for an intelligent opening and closing control device for a ventilator explosion-proof cover, the specific use steps are as follows: S1. Open the explosion-proof cover: Select the start operation mode through the touch screen or control button provided on the control box assembly; The control module sends a signal to start the uninterruptible power supply to power the device; The solenoid valve receives the signal and switches to the open state; The explosion-proof electric push rod pushes the pin guide tube to move so that it withdraws from the opening of the cylinder lifting flange; Under the action of hydraulic pressure, the cylinder body drives the explosion-proof cover to open slowly through the cylinder lever and the cylinder adjusting rod head; The proximity switch monitors the opening position of the explosion-proof cover in real time and feeds the signal back to the control module; S2. Close the explosion-proof cover: Select the shutdown operation mode; The control module sends a signal to adjust the state of the solenoid valve; The explosion-proof electric push rod pushes the pin guide tube in the opposite direction to move and insert it into the opening of the cylinder lifting flange; The cylinder body drives the explosion-proof cover down under the action of hydraulic pressure to achieve closing; The proximity switch monitors the closed position to ensure that the explosion-proof cover is fully closed; S3. Treatment of explosion-proof cover during reverse wind operation: When anti-wind operation is required, the system automatically enters anti-wind mode; The quick-connect assembly moves quickly and automatically connects the cylinder and the pin guide tube to ensure the stability of the explosion-proof cover in reverse wind conditions.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention improves the safety and reliability of the coal mine ventilation system by setting up a control module, an opening and closing module, a sensor module and a monitoring module, successfully solves the safety hazards caused by traditional job supervision and backward operating technology, realizes the intelligent control and management of the explosion-proof cover of the ventilator, and lays a foundation for the intelligent improvement and unmanned management of coal mine enterprises. It has a variety of automatic control functions and manual operation functions to meet the use requirements under different working conditions, adopts advanced technologies and equipment, such as PLC, touch screen, intelligent gateway, dual pressure sensor, etc., to ensure the stability and reliability of the system, and is equipped with an uninterruptible power supply and an emergency manual control device to ensure that the system can still work normally in emergency situations such as power outages. The present invention has significant innovation and practicality, can effectively improve the safety, reliability and intelligence level of the coal mine ventilation system, and provide strong guarantee for the safe production and intelligent development of coal mine enterprises.

[0016] 2. The present invention adopts a PLC programmable control box and a touch screen to realize remote, manual and automatic control, which is convenient to operate and has a high degree of intelligence. The explosion-proof cover can be quickly opened and closed through the quick connection components and the hydraulic system, thereby improving work efficiency and realizing the rapid opening and closing of the explosion-proof cover. During reverse wind operation, the quick connection components can ensure the stability of the explosion-proof cover. The remote intelligent monitoring and management of the opening and closing of the explosion-proof cover can be realized through the monitoring module, thereby improving safety, and the sensor module can detect faults of the sensor and promptly alarm to ensure the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 It is a partial structural schematic diagram of the quick connection assembly of the present invention; Figure 3 It is the wiring diagram of the control box body of the present invention; Figure 4 It is a schematic diagram of the overall system flow structure of the device of the present invention; In the figure: 1. explosion-proof cover; 2. touch screen; 3. controller; 4. cylinder body; 5. cylinder lifting flange; 6. cylinder lever; 7. cylinder adjusting rod head; 8. pin guide tube; 9. pin; 10. explosion-proof electric push rod; 11. opening; 12. proximity switch. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 4 The present invention provides a technical solution: an intelligent opening and closing control device for a fan explosion-proof cover, comprising A control module, used for integrating the input and output of signals, the control module comprising a control box assembly and a main ventilator, the control box assembly comprising a control box body; An opening and closing module is used to drive the explosion-proof cover 1 to open and close quickly through the cooperation of the control module. The opening and closing module is composed of a quick connection component, a sensor component, an uninterruptible power supply and a solenoid valve. The quick connection component is used to drive the explosion-proof cover 1 to open and close. The sensor component includes a main pressure sensor and an auxiliary pressure sensor. The uninterruptible power supply is used to power the equipment; The sensing module is used to detect faults of the main pressure sensor and the auxiliary pressure sensor provided in the opening and closing module and give an alarm in time. The sensing module includes a vacuum electromagnetic starter and a proximity switch 12. The proximity switch 12 cooperates with the control module to realize the intelligent control and management of the explosion-proof cover 1. The dual pressure sensor design is adopted to ensure the reliability of the system. One sensor is the main control and the other is the backup work. If there is a problem or a fault, the faulty sensor is automatically cut off, and the system automatically switches to the normal pressure system, and displays the fault and alarm; And a monitoring module, the monitoring module is used to cooperate with the control module to realize remote intelligent monitoring and management of the opening and closing of the explosion-proof cover 1, the monitoring module includes a remote monitoring component, the remote monitoring component includes a camera and a hard disk recorder, the camera is a network ball camera, the number of the camera and the hard disk recorder are matched, and the industrial gateway technology is used in conjunction with the PLC to realize remote intelligent monitoring and management to achieve unattended operation. The industrial intelligent gateway can realize PLC remote control and data transmission, and remotely monitor and operate the explosion-proof cover 1. A remote monitoring component is provided, including 3 network ball cameras and a hard disk recorder, etc., which is convenient for the on-duty personnel to observe the on-site situation and realize video surveillance and data storage for correct operation.

[0020] 1. Normal opening and closing control Open the explosion-proof cover 1: The operator first enters the system operation interface through the touch screen 2 or control button on the control box, and selects the open operation mode on the operation interface. After the control module receives the opening command, it first checks the operating status of the main fan, the pressure sensor value and other related parameters to ensure that the opening conditions are met. If the main fan is running and it is not suitable to open the explosion-proof cover 1, the system will issue an alarm and display the reason on the operation interface, refusing to execute the opening command. After confirming that the opening conditions are met, the control module sends a signal to start the uninterruptible power supply to power the device. The solenoid valve receives the signal, switches to the open state, adjusts the flow direction of the hydraulic system, and prepares for the action of the cylinder. The explosion-proof electric push rod 10 opens The action starts, pushing the pin guide tube 8 to move and withdraw it from the opening 11 of the cylinder lifting flange 5. During this process, the proximity switch 12 monitors the position of the pin guide tube 8 in real time to ensure its accurate withdrawal. When the pin guide tube 8 is completely withdrawn, the cylinder body 4 drives the explosion-proof cover 1 to slowly open through the cylinder lever 6 and the cylinder adjusting rod head 7 under the action of hydraulic pressure. The proximity switch 12 monitors the opening position of the explosion-proof cover 1 in real time and feeds back the signal to the control module. The control module adjusts the pressure of the hydraulic system and the action of the explosion-proof electric push rod 10 according to the feedback signal to ensure that the explosion-proof cover 1 is smoothly opened to the specified position. At the same time, the opening progress and status of the explosion-proof cover 1 will be displayed in real time on the operation interface.

[0021] Close the explosion-proof cover 1: The operator selects the closing operation mode on the operation interface, the control module sends a signal, adjusts the state of the solenoid valve, changes the flow direction of the hydraulic system, and the explosion-proof electric push rod 10 pushes the pin guide tube 8 in the opposite direction to move and insert it into the opening 11 of the cylinder lifting flange 5. The proximity switch 12 monitors the position of the pin guide tube 8 in real time to ensure its accurate insertion. When the pin guide tube 8 is inserted into place, the cylinder body 4 drives the explosion-proof cover 1 to descend under the action of the hydraulic pressure to achieve closure. The proximity switch 12 monitors the closing position to ensure that the explosion-proof cover 1 is completely closed. After the control module confirms that the explosion-proof cover 1 is closed in place according to the feedback signal of the proximity switch 12, it stops the action of the hydraulic system. At the same time, the closed state of the explosion-proof cover 1 will be displayed on the operation interface.

[0022] 2. Control during reverse wind operation When the reverse wind operation is required, the system will automatically detect the reverse wind demand and automatically enter the reverse wind mode. The quick connection component will act quickly to automatically connect the oil cylinder and the pin guide tube 8 to ensure the stability of the explosion-proof cover 1 in the reverse wind state. During this process, the proximity switch 12 will monitor the connection status in real time to ensure that the connection is accurate. The control module adjusts the pressure and flow of the hydraulic system according to the requirements of the reverse wind operation to ensure that the explosion-proof cover 1 can withstand the pressure during reverse wind. At the same time, the main pressure sensor and the auxiliary pressure sensor will monitor the system pressure in real time. When the system pressure is lower than 18MPa, the control module automatically starts the oil pump to pressurize the accumulator. When the pressure reaches 190MPa, the oil pump will automatically stop running to keep the system pressure within the set range. If the pressure sensor control line is short-circuited or open-circuited, the PLC control module will identify and alarm; when the hydraulic system leaks, the system pressure does not increase within a normal time, or is still decreasing, the control module will determine that there may be a pipeline leak, or the oil pump fails and stops the alarm. The sensor component monitors the pressure change in real time. Once an abnormality is found, an alarm will be issued immediately so that the operator can take timely measures.

[0023] 3. Fault Detection and Handling The main pressure sensor and the auxiliary pressure sensor monitor the system pressure in real time. When the value difference between the two sensors exceeds a certain range, the control module determines that one of the sensors may be faulty and issues an alarm to prompt the staff to perform maintenance. At the same time, the system will automatically switch to the backup sensor for monitoring to ensure the normal operation of the system. The proximity switch 12 monitors the opening and closing position of the explosion-proof cover 1 and the entry and exit position of the pin 9. If the proximity switch 12 detects an abnormal position, the control module will immediately stop the relevant actions and issue an alarm. The operator can view the specific fault location and cause through the operation interface for timely processing. When the system fails, the control module will automatically switch to safety mode to ensure that the explosion-proof cover 1 is in a safe state. At the same time, the control module will transmit the fault information to the remote monitoring terminal through the monitoring module so that the staff can perform repairs in time.

[0024] The control box body adopts a mining explosion-proof and intrinsically safe PLC programmable control box, which is used to receive signals from control buttons, emergency stop buttons, pressure and negative pressure sensors, explosion-proof cover 1 opening and closing position switches, cylinder quick connection device position switches, and main fan start / stop / reverse wind and reverse operation signals, and output explosion-proof cover 1 opening and closing signals, fan start and reverse wind signals, hydraulic oil pump start and stop signals, and connection device entry and return control signals. The control box assembly also includes a touch screen 2 and a controller 3. The controller 3 is electrically connected to the lower end of the touch screen 2. The touch screen 2 is 10 inches in size. Combined with intelligent gateway technology, remote, manual, and automatic control processes are realized. The oil pump start and stop, explosion-proof cover 1 opening and closing, and connection device entry and exit can be manually controlled, and it can be linked with the main fan for control and support remote monitoring.

[0025] The quick connection assembly is composed of a cylinder body 4, a cylinder lifting flange 5, a cylinder lever 6, a cylinder adjusting rod head 7, a pin guide tube 8, 4 groups of equally spaced pins 9 and 4 explosion-proof electric push rods 10. It is used to automatically and quickly connect the cylinder and the pin guide tube 8 when the explosion-proof cover 1 is closed and the wind is reversed, and automatically withdraw when the fan is running. It is controlled by a PLC control box and requires a 24V DC power supply. When a power outage occurs, it can be better integrated with an uninterruptible power supply for emergency use. The cylinder body 4 The lower end is a cylinder lever 6, and a cylinder lifting flange 5 is provided at the connection between the cylinder lever 6 and the cylinder body 4. The lower end of the cylinder lever 6 is connected to a cylinder adjusting rod head 7. Four groups of equally spaced pins 9 are fixedly connected to the outer wall of the cylinder body 4. An opening 11 matching the pin guide tube 8 is provided on the cylinder lifting flange 5. The pin guide tube 8 is inserted into the opening 11 when moving, and the pin guide tube 8 is driven to move by an explosion-proof electric push rod 10 provided at one end thereof.

[0026] The solenoid valve is a manually assisted mining explosion-proof three-position four-way solenoid valve. The uninterruptible power supply adopts a mining-grade cast-in-place and intrinsically safe DC regulated uninterruptible power supply to ensure that the control equipment works normally in the event of a total power outage or accidental interruption. The explosion-proof cover 1 can be monitored normally and is in a charging state during normal power supply. If there is a total power outage or an accidental power interruption, the uninterruptible power supply can quickly and automatically switch to provide a continuous 24V DC power supply for the control equipment. It has an advanced intelligent switching system to achieve seamless switching between the main power supply and the backup battery. The switching time is extremely short, ensuring that the control equipment has no interruption or failure, improving system reliability, and protecting system data from loss.

[0027] The solenoid valve is composed of a valve body, a valve core, an electromagnet, a spring manual control rod and other components. The output end of the controller 3 is electrically connected to the solenoid valve. When the electromagnet is not energized, the valve core is in the middle position under the action of the spring force, the four oil ports are closed to each other, and the system maintains pressure. The electromagnet is energized to generate electromagnetic force to attract the valve core to move. Depending on the direction of power supply, the valve core moves to the left or right position, thereby realizing the control of the oil flow direction of the hydraulic system and ensuring the safe, accurate and reliable opening and closing of the explosion-proof cover 1.

[0028] The proximity switch 12 adopts an intrinsically safe magnetic proximity switch 12, which detects the approach or distance state of the target object by sensing the change of the magnetic field, monitors the opening and closing position of the explosion-proof cover 1 and the entry and exit position of the pin 9 of the cylinder connecting device, and serves as an important control and feedback signal of the control module. When a magnetic object approaches the sensing area, the internal magnetic sensitive element detects the change of the magnetic field and converts it into an electrical signal output. The non-contact detection method has fast response speed, high accuracy and long service life, avoids mechanical contact wear and failure, and realizes intelligent control and management of the explosion-proof cover 1.

[0029] The number of the cameras is three, and the monitoring module adopts industrial gateway technology in conjunction with PLC to achieve remote intelligent monitoring and management.

[0030] The controller 3 is electrically connected to the main fan, and realizes linkage control between the explosion-proof cover 1 and the main fan in combination with the opening and closing position switch of the explosion-proof cover 1 according to the operating status of the main fan.

[0031] The vacuum electromagnetic starter signal is connected to a vacuum contactor, which serves as the main switch element to control the opening and closing of the hydraulic station oil pump motor. It has multiple protection functions such as overload protection, short circuit protection, phase failure protection, and leakage lockout. The overload protection adopts an inverse time characteristic and automatically adjusts the protection action time according to the degree of motor overload. When the leakage lockout detects that the insulation resistance of the motor and cable is lower than the set value, the starter is in a locked state, and the motor cannot be started and a fault signal is issued, thereby improving the comprehensive control and protection of the oil pump motor.

[0032] A method for an intelligent opening and closing control device for a ventilator explosion-proof cover, the specific use steps are as follows: S1. Open explosion-proof cover 1: Select the start operation mode through the touch screen 2 or control button provided in the control box assembly; The control module sends a signal to start the uninterruptible power supply to power the device; The solenoid valve receives the signal and switches to the open state; The explosion-proof electric push rod 10 pushes the pin guide tube 8 to move so that it withdraws from the opening 11 of the cylinder lifting flange 5; Under the action of hydraulic pressure, the cylinder body 4 drives the explosion-proof cover 1 to open slowly through the cylinder lever 6 and the cylinder adjusting rod head 7; The proximity switch 12 monitors the opening position of the explosion-proof cover 1 in real time and feeds back the signal to the control module; S2. Close explosion-proof cover 1: Select the shutdown operation mode; The control module sends a signal to adjust the state of the solenoid valve; The explosion-proof electric push rod 10 pushes the pin guide tube 8 in the opposite direction to move and insert it into the opening 11 of the cylinder lifting flange 5; The cylinder body 4 drives the explosion-proof cover 1 to descend under the action of hydraulic pressure to achieve closing; The proximity switch 12 monitors the closed position to ensure that the explosion-proof cover 1 is completely closed; S3. Treatment of explosion-proof cover 1 during reverse wind operation: When anti-wind operation is required, the system automatically enters anti-wind mode; The quick connection assembly acts quickly to automatically connect the oil cylinder and the pin guide tube 8, thereby ensuring the stability of the explosion-proof cover 1 in the reverse wind state.

[0033] Working principle of the present invention: 1. Joint control with the main fan: According to the operating status of the main fan, combined with the opening and closing position switch of the explosion-proof cover 1, the explosion-proof cover 1 and the main fan are controlled in linkage. When the fan stops, the explosion-proof cover 1 can be opened "instantaneously", "delayed" or "inherently" at a certain time. When the fan starts, the explosion-proof cover 1 will close automatically.

[0034] 2. Reversing operation: The machine can be automatically reversed without opening the cover, and the reversing process can be completed quickly.

[0035] 3. One-key reverse wind: When the system needs reverse wind, press the "one-key reverse wind" button, and the cylinder quick connection device will automatically connect the cylinder. After the connection is in place, the system will automatically press the explosion-proof cover 1 and send out a "reverse wind" signal.

[0036] 4. Remote monitoring operation: support remote computer and mobile phone monitoring operation.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent opening and closing control device for explosion-proof cover of a ventilator, characterized in that: include A control module, used for integrating the input and output of signals, the control module comprising a control box assembly and a main ventilator, the control box assembly comprising a control box body; An opening and closing module is used to drive the explosion-proof cover (1) to open and close quickly through the cooperation of the control module. The opening and closing module is composed of a quick connection component, a sensor component, an uninterruptible power supply and a solenoid valve. The quick connection component is used to drive the explosion-proof cover (1) to open and close. The sensor component includes a main pressure sensor and an auxiliary pressure sensor. The uninterruptible power supply is used to power the device. The quick connection component is composed of a cylinder body (4), a cylinder lifting flange (5), a cylinder lever (6), a cylinder adjustment rod head (7), a pin guide tube (8), 4 groups of equally spaced pins (9) and 4 explosion-proof electric push rods (10). The quick connection component is used to automatically and quickly connect the explosion-proof cover (1) when it is closed and when the wind is reversed. The oil cylinder and the pin guide tube (8) are connected and automatically withdrawn when the fan is running. The lower end of the oil cylinder body (4) is an oil cylinder lever (6). The connection between the oil cylinder lever (6) and the oil cylinder body (4) is provided with an oil cylinder lifting flange (5). The lower end of the oil cylinder lever (6) is connected with an oil cylinder adjusting rod head (7). Four groups of pins (9) distributed at equal distances are fixedly connected to the outer wall of the oil cylinder body (4). An opening (11) matching the pin guide tube (8) is opened on the oil cylinder lifting flange (5). When the pin guide tube (8) moves, it is inserted into the opening (11). The pin guide tube (8) is driven to move by an explosion-proof electric push rod (10) provided at one end thereof. A sensor module is used to detect faults of a main pressure sensor and an auxiliary pressure sensor provided in the opening and closing module and to give an alarm in a timely manner. The sensor module comprises a vacuum electromagnetic starter and a proximity switch (12). The proximity switch (12) cooperates with the control module to realize intelligent control and management of the explosion-proof cover (1). The proximity switch (12) adopts an intrinsically safe magnetic proximity switch (12). The proximity switch (12) detects the approach or distance state of a target object by inducing a change in a magnetic field, monitors the opening and closing position of the explosion-proof cover (1) and the entry and exit position of the pin (9), and serves as an important control and feedback signal of the control module; and a monitoring module, the monitoring module being used to cooperate with the control module to realize remote intelligent monitoring and management of the opening and closing of the explosion-proof cover (1), the monitoring module comprising a remote monitoring component, the remote monitoring component comprising a camera and a hard disk recorder, the camera being a network dome camera, the number of the cameras matching the number of the hard disk recorders.

2. According to claim 1, the intelligent opening and closing control device for the explosion-proof cover of a ventilator is characterized in that: The control box body adopts a mine-use flameproof and intrinsically safe PLC programmable control box. The control box assembly also includes a touch screen (2) and a controller (3). The controller (3) is electrically connected to the lower end of the touch screen (2). The touch screen (2) is used to realize remote, manual and automatic control processes and supports remote monitoring.

3. The intelligent opening and closing control device for the explosion-proof cover of a ventilator according to claim 1 is characterized in that: The solenoid valve is a manually assisted mining explosion-proof three-position four-way solenoid valve, and the uninterruptible power supply adopts a mining-used cast-in-place and intrinsically safe DC voltage-stabilized uninterruptible power supply.

4. The intelligent opening and closing control device for the explosion-proof cover of a ventilator according to claim 2 is characterized in that: The output end of the controller (3) is electrically connected to the solenoid valve.

5. The intelligent opening and closing control device for the explosion-proof cover of a ventilator according to claim 2 is characterized in that: The number of cameras is three, and the monitoring module adopts industrial gateway technology in conjunction with PLC to achieve remote intelligent monitoring and management.

6. The intelligent opening and closing control device for the explosion-proof cover of a ventilator according to claim 2 is characterized in that: The controller (3) is electrically connected to the main fan, and realizes linkage control of the explosion-proof cover (1) and the main fan in combination with the opening and closing position switch of the explosion-proof cover (1) according to the operating status of the main fan.

7. The intelligent opening and closing control device for the explosion-proof cover of a ventilator according to claim 1 is characterized in that: The vacuum electromagnetic starter signal is connected to a vacuum contactor, and the vacuum contactor serves as a main switch element to control the hydraulic station oil pump motor to start and close.

8. A method for intelligent opening and closing control device of explosion-proof cover of a ventilator according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: S1. Open the explosion-proof cover (1): Selecting the start operation mode through the touch screen (2) or control buttons of the control box assembly; The control module sends a signal to start the uninterruptible power supply to power the device; The solenoid valve receives the signal and switches to the open state; The explosion-proof electric push rod (10) pushes the pin guide tube (8) to move so that it withdraws from the opening (11) of the cylinder lifting flange (5); Under the action of hydraulic pressure, the cylinder body (4) drives the explosion-proof cover (1) to open slowly through the cylinder lever (6) and the cylinder adjustment rod head (7); The proximity switch (12) monitors the opening position of the explosion-proof cover (1) in real time and feeds back the signal to the control module; S2. Close the explosion-proof cover (1): Select the shutdown operation mode; The control module sends a signal to adjust the state of the solenoid valve; The explosion-proof electric push rod (10) pushes the pin guide tube (8) in the reverse direction to move the pin guide tube (8) and insert the pin guide tube (8) into the opening (11) of the cylinder lifting flange (5). The cylinder body (4) drives the explosion-proof cover (1) to descend under the action of hydraulic pressure, thereby achieving closure; The proximity switch (12) monitors the closed position to ensure that the explosion-proof cover (1) is completely closed; S3. Treatment of explosion-proof cover (1) during reverse wind operation: When anti-wind operation is required, the system automatically enters anti-wind mode; The quick connection assembly moves quickly to automatically connect the oil cylinder and the pin guide tube (8), thereby ensuring the stability of the explosion-proof cover (1) in the reverse wind state.

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