Automatic pneumatic door for middle section and auxiliary shaft exit of non-coal mine

Abstract

The utility model discloses a non-coal mine middle section and auxiliary shaft outlet automatic pneumatic door which comprises an execution unit, a control unit and a monitoring unit, the execution unit is composed of a pair of air cylinders and an electromagnetic valve, the air cylinders are arranged on two door bodies respectively, the air cylinders are connected with the electromagnetic valve through signal lines, and a main air inlet pipe of the air cylinders is connected with a gas pressure reducing valve; the control unit is composed of two intermediate relays, a time relay and a power module, the two intermediate relays are connected in parallel, and the intermediate relays are connected with the time relay through wires; the monitoring unit is composed of infrared sensors, and the infrared sensors are arranged on the two sides of the door body. Compared with the prior art, the device has the advantages that the problem that manual operation is needed during power failure or power failure in the prior art is effectively solved, potential safety hazards caused by untimely manual operation are avoided, and the safety and the reliability of equipment are improved; the operation is simple, and the technical requirements on operators are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of safety ventilation equipment for non-coal mines, specifically to an automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine. Background Technology

[0002] In non-coal mine production operations, the stable operation of the ventilation system is crucial. The automatic opening and closing control of intermediate shaft air doors and auxiliary shaft outlet air doors is a key link in ensuring the normal operation of the ventilation system. Existing technologies use electric drives to control the opening and closing of air doors. For example, patent publication number CN114320427A proposes a remote intelligent electric air door control device, which uses a motor to drive the opening and closing of the air door. However, this electric drive method cannot function properly in the event of a power outage or failure, requiring manual operation. This is not only time-consuming and labor-intensive, but also poses a serious safety hazard as manual operation may not be able to respond promptly in the event of an emergency.

[0003] In addition, some existing technologies use pneumatic drive, but have certain design flaws. For example, patent CN104295310A proposes an automatic control device for fully pneumatic mine ventilation doors. Although it uses cylinders to realize the door's action, it cannot automatically open the door when power is off or interrupted, and manual intervention is still required, which cannot meet the actual needs of safe production in non-coal mines.

[0004] Therefore, there is an urgent need to design an automatic pneumatic door for the middle section and auxiliary shaft outlet of non-coal mines to solve the problems of existing technologies, such as inability to open the door during power outages or interruptions, the need for manual operation, time and labor costs, and safety hazards. At the same time, it is necessary to reduce installation and maintenance costs and improve the reliability and safety of the equipment. Utility Model Content

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: an automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine, comprising an execution unit, a control unit, and a monitoring unit. The execution unit consists of a cylinder and a solenoid valve. The cylinder includes a pair and is respectively installed on two door bodies. The cylinder is connected to the solenoid valve through a signal line, and the main air inlet pipe of the cylinder is connected to a gas pressure reducing valve. The control unit consists of an intermediate relay, a time relay, and a power module. There are two intermediate relays connected in parallel. The intermediate relays are connected to the time relays through wires. Both the time relays and the intermediate relays are connected to the power module through power lines. The monitoring unit consists of infrared sensors, which are installed on both sides of the door body.

[0006] As an improvement, the solenoid valve adopts the SY4V210-08 type, DC24V, two-position five-way; the air pressure requirement of the cylinder is 0.4~0.7MPa.

[0007] As an improvement, the intermediate relay adopts the OMRONMY2N-J type; the time relay adopts the OMRONH3Y-2 type, which is adjustable from 0.1s to 3min; and the power supply module adopts a 24VDC / 5A switching power supply.

[0008] As an improvement, the infrared sensor uses two sets of E3JK-J type infrared specular reflection sensors.

[0009] As an improvement, the solenoid valve is equipped with an AC2000 series silencer.

[0010] As an improvement, the cylinder uses an ASC200-F06 throttle valve for speed regulation.

[0011] As an improvement, all cables for the execution unit, control unit, and monitoring unit are made of RVVP shielded cable.

[0012] As an improvement, the gas pressure reducing valve adopts the DAR2000 model.

[0013] As an improvement, the cylinder is installed either parallel or perpendicular to the door body.

[0014] The advantages of this utility model compared with the prior art are: (1) It solves the problem of not being able to open when power is cut off or interrupted: It adds the function of automatically opening the door when power is cut off or interrupted, effectively solving the problem that the prior art requires manual operation when power is cut off or interrupted, avoiding the safety hazards caused by untimely manual operation, and improving the safety and reliability of the equipment; (2) It is easy to operate: The workflow is clear and straightforward. The opening and closing of the damper is automatically controlled by the sensor detection signal, without complicated operation steps, reducing the technical requirements for operators. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the electrical schematic diagram of this utility model.

[0018] As shown in the figure: 1. Cylinder, 2. Solenoid valve, 3. Gas pressure reducing valve, 4. Infrared sensor. Detailed Implementation

[0019] In specific implementation of this utility model, such as Figure 1 and Figure 2As shown in the figure, the automatic pneumatic door at the middle section and auxiliary shaft exit of the non-coal mine described in this embodiment aims to solve the problems of the prior art, such as inability to open when power is cut off or interrupted, the need for manual operation, time and labor costs, and safety hazards. At the same time, it reduces installation and maintenance costs and improves the reliability and safety of the equipment.

[0020] The automatic pneumatic door at the exit of the intermediate section and auxiliary shaft of the non-coal mine in this embodiment mainly consists of an execution unit, a control unit, and a monitoring unit. The specific components and models of each unit are as follows:

[0021] (1) Execution unit

[0022] Cylinder 1 is a general-purpose model, with a required air pressure of 0.4–0.7 MPa. A pair of cylinders are provided, each mounted on one of the two door bodies. The mounting configuration can be chosen to be parallel or perpendicular to the door body, depending on the available space and door structure. The cylinders open and close the door body through the reciprocating motion of the piston. Solenoid valve 2 is a SY4V210-08 type, DC24V, 2-position 5-way valve. Solenoid valve 2 is connected to the cylinder via a signal line to control the cylinder's air intake and exhaust, thereby controlling the piston's direction of movement. Simultaneously, solenoid valve 2 is equipped with an AC2000 series silencer to reduce noise generated during operation. Gas pressure reducing valve 3 is a DAR2000 type, connected to the cylinder's main air intake pipe. The function of the gas pressure reducing valve is to stabilize the gas pressure entering the cylinder at 0.4–0.7 MPa, ensuring the cylinder operates under appropriate pressure and preventing excessively high or low pressure from affecting its normal operation and service life.

[0023] (2) Control Unit

[0024] Two OMRON MY2N-J type intermediate relays are used in parallel. These intermediate relays are connected to the time relay via wires and to the power module via power lines. The intermediate relays amplify and isolate signals in the circuit. When the sensor in the monitoring unit detects a signal, the intermediate relays activate, controlling the on / off state of subsequent circuits. The time relays are OMRON H3Y-2 type, adjustable from 0.1s to 3 minutes. They control the door's holding time; adjusting the time relay's setting ensures the door remains open for a certain period to accommodate personnel or equipment passage. The power module uses a 24VDC / 5A switching power supply to provide a stable power supply to the entire control unit.

[0025] (3) Monitoring Unit

[0026] Infrared sensor 4 uses two sets of E3JK-J type infrared specular reflection sensors, which are respectively installed on both sides of the door. The infrared sensors are used to detect whether there is an object approaching the door. When an object enters the detection range, the sensor will send a signal to trigger the subsequent door opening action.

[0027] The overall workflow of this embodiment is as follows:

[0028] (1) Door opening trigger phase

[0029] When a person or object approaches the door, the infrared sensors 4 installed on both sides of the door activate. The first infrared sensor (hereinafter referred to as IR1) and the second infrared sensor (hereinafter referred to as IR2) detect signals respectively. IR1 and IR2 transmit the detected signals to the first intermediate relay (hereinafter referred to as KA1) and the second intermediate relay (hereinafter referred to as KA2) in the control unit. Due to the signals emitted by IR1 and IR2, KA1 and KA2 are energized. After KA1 and KA2 are energized, the solenoid valve (hereinafter referred to as YV) is powered. At this time, YV controls the intake and exhaust of cylinder 1 according to the received electrical signal, causing the cylinder to retract, thereby opening the door.

[0030] (2) Maintenance phase

[0031] After the door opens, KA2 disconnects. Simultaneously, the time relay (hereinafter referred to as KT) begins timing. It is recommended to set the time relay to 5-10 seconds, depending on actual needs. During this time, the door remains open to allow people or objects to pass through smoothly.

[0032] (3) Door closing trigger phase

[0033] When KT finishes timing, KA1, KT, and YV are de-energized. After YV is de-energized, the intake and exhaust states of cylinder 1 change, the cylinder extends, and pushes the door to close.

[0034] In this embodiment, the door will only move when the infrared sensor 4 detects a signal, preventing accidental opening when no one or no object is near, thus improving equipment safety. An emergency stop button is connected in series in the control circuit, and can be pressed in an emergency to immediately cut off the power to the control circuit and stop the door. In the event of a power outage, mechanical self-locking is achieved through a reasonable pneumatic circuit design and the control logic of the solenoid valve 2, avoiding continuous ventilation energy consumption and ensuring that the door automatically opens during a power outage, guaranteeing unobstructed ventilation and preventing safety accidents caused by poor ventilation due to closed dampers. By adjusting the holding time of KT, the holding time of the door after opening can be controlled. If personnel or objects have not fully passed through, the holding time can be appropriately extended to prevent injury from being pinched when passing through the damper. Furthermore, through the circuit design of the control unit and the coordination of the pneumatic system, in the event of a power outage, the solenoid valve 2 loses power, and the cylinder, under the action of an internal spring or air pressure balance, automatically opens the door, solving the problem of manual operation required in existing technologies during power outages.

[0035] In addition, the model numbers of each component are clearly marked in this embodiment, such as the SY4V210-08 solenoid valve and the OMRONMY2N-J intermediate relay, which users can directly purchase, facilitating equipment installation and commissioning. The cylinder specifications can be adjusted according to the actual weight of the door. Different cylinder specifications can be selected for doors of different weights. For example, for a 1-meter wide door, if the door is heavy, an SC50x100-S cylinder can be used in conjunction with an ASC200-F06 throttle valve. By adjusting the cylinder's air intake speed, a switching speed of 0.8-1.2 seconds can be achieved to meet the needs of different users.

[0036] For post-maintenance, the cylinders are inspected monthly and lubricated with ISO VG32 pneumatic oil; the solenoid valve filter is cleaned quarterly; and the sensor sensitivity is calibrated regularly.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine, comprising an execution unit, a control unit, and a monitoring unit, characterized in that: The execution unit consists of a cylinder (1) and a solenoid valve (2). The cylinder (1) includes a pair and is located on two doors. The cylinder (1) is connected to the solenoid valve (2) via a signal line. The main air inlet pipe of the cylinder (1) is connected to a gas pressure reducing valve (3). The control unit consists of an intermediate relay, a time relay, and a power module. There are two intermediate relays connected in parallel. The intermediate relays are connected to the time relays via wires. Both the time relays and the intermediate relays are connected to the power module via power lines. The monitoring unit consists of an infrared sensor (4), which is installed on both sides of the door.

2. The automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The solenoid valve (2) is of type SY4V210-08, DC24V, two-position five-way; the air pressure requirement of the cylinder (1) is 0.4~0.7MPa.

3. The automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The intermediate relay is an OMRON MY2N-J type; the time relay is an OMRON H3Y-2 type, adjustable from 0.1s to 3min; the power supply module is a 24VDC / 5A switching power supply.

4. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The infrared sensor (4) uses two sets of E3JK-J type infrared specular reflection sensors.

5. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The solenoid valve (2) is equipped with an AC2000 series silencer.

6. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The cylinder (1) uses an ASC200-F06 throttle valve for speed regulation.

7. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: All cables of the execution unit, control unit, and monitoring unit are RVVP shielded cables.

8. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The gas pressure reducing valve (3) is of type DAR2000.

9. An automatic pneumatic door for the middle section and auxiliary shaft outlet of a non-coal mine according to claim 1, characterized in that: The cylinder (1) is installed in a form that is parallel or perpendicular to the door body.

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