Mining air window

Abstract

The utility model relates to the technical field of air windows, and discloses a mining air window which comprises a window frame, a rotating door movably connected in the window frame in a sleeved mode, a PLC fixedly installed on one side of the window frame, and a door closing assembly arranged on one side of the window frame and used for closing the rotating door. Through mutual cooperative use of the window frame, the revolving door, the limiting frame, the moving plate, the push-pull electromagnet and the limiting groove, the effect of closing the revolving door is achieved, when reverse airflow (such as gas outburst shock waves) occurs, the revolving door can be quickly pushed to be closed through external force, the situation that the revolving door is difficult to respond quickly due to blockage and the like is avoided, and the service life of the revolving door is prolonged. Meanwhile, under the normal condition, the electromagnetic lock switch is controlled by collecting the air pressure difference between the windward side and the leeward side, a user does not need to manually open the rotating door, ventilation is conducted in time, use is convenient, and practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a mining ventilation window. Background Technology

[0002] The stability and reliability of mine ventilation systems are crucial for ensuring safe coal mine production. Adjustable air windows are one of the main facilities used for regulating airflow in mine ventilation systems. They are windows installed on air doors or other ventilation facilities to adjust airflow, achieving airflow regulation by changing the opening area of ​​the window. When the air window is open, the airflow is required to flow according to the preset airflow volume and direction. If the airflow reverses, effective measures must be taken to close the air window promptly.

[0003] An existing type of mine ventilation window (announcement number: CN221002834U) has at least the following drawbacks:

[0004] In the aforementioned patent, since the fan blades are no longer restricted by structures such as damping gas struts, the reset speed is greatly improved, and the tight closure of the fan blades can be effectively guaranteed. Combined with the self-locking mechanism, the fan blades are always in a closed state, ensuring their isolation from harmful gases. However, when dust enters the fan blade bearings, rotation becomes difficult, making it hard to close in time. Furthermore, the self-locking can only be released by manually pressing the lock head and opening the fan blades, which is cumbersome and may delay ventilation needs in emergencies. At the same time, if the self-locking mechanism fails in a disaster (such as a broken spring), there is no backup manual unlocking design, which may lead to the complete paralysis of the ventilation system. Therefore, there is an urgent need for a mine ventilation window to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a mining ventilation window.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mine ventilation window includes a window frame with a rotating door movably fitted inside. A PLC controller is fixedly installed on one side of the window frame. The window frame also includes a door closing assembly, located on one side of the window frame for closing the rotating door. The closing assembly includes a limiting frame, fixedly installed on one side of the window frame, with a movable plate movably fitted inside the limiting frame. A first circular through hole is formed on one side of the movable plate, and a push-pull electromagnet is fixedly fitted onto the inner wall of the first circular through hole. A limiting groove is formed on one side of the window frame, and the telescopic shaft of the push-pull electromagnet is inserted into the limiting groove. A spring is fixedly installed on one side of the limiting frame and fixedly installed to one side of the movable plate. A first limiting post is fixedly installed on the bottom surface of the movable plate. Intrinsically safe mine-use air pressure sensors are fixedly installed on the front and rear sides of the window frame. A manual opening assembly is also included, allowing operators to manually open the rotating door.

[0008] As a further embodiment of this utility model, the manual opening component includes: a fixing groove, the fixing groove being formed on the inner side of the window frame, an electromagnetic lock being fixedly installed inside the fixing groove, a steel wire rope being fixedly installed at the end of the telescopic shaft of the electromagnetic lock, a first fixing hole being formed on one side of the window frame, the first fixing hole communicating with the fixing groove, the steel wire rope passing through the interior of the first fixing hole, a tension spring being fixedly installed on one side of the interior of the fixing groove, the tension spring being fixedly installed with the steel wire rope, second limiting posts being fixedly installed at the top and bottom of the interior of the fixing groove, a fluorescent pull plate being fixedly installed at the end of the steel wire rope, and a lock tongue groove being formed on one side of the revolving door.

[0009] As a further embodiment of this utility model, a protective cover and a storage battery are fixedly installed on one side of the window frame. The storage battery and the PLC controller are both located inside the protective cover, and the electromagnetic lock and the push-pull electromagnet are both electrically connected to the PLC controller.

[0010] As a further embodiment of this utility model, a support shaft is fixedly installed inside the window frame, and two bearings are fixedly sleeved on the outer circular wall of the support shaft, with the bearings being fixedly sleeved with the shaft hole of the revolving door.

[0011] As a further embodiment of this utility model, a protective plate is fixedly installed on the inner side wall of the locking tongue groove.

[0012] As a further embodiment of this utility model, a protective chamber is fixedly installed on one side of the limiting frame, and a second fixing hole is opened on the bottom surface of the protective chamber, which is movably connected to the first limiting post.

[0013] As a further embodiment of this utility model, a limiting plate is fixedly installed on one side of the inside of the window frame, and a shock-absorbing plate is fixedly installed on one side of the limiting plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By using the coordinated operation of the window frame, revolving door, limit bracket, movable plate, push-pull electromagnet, and limit groove, the revolving door can be closed. When reverse airflow occurs (such as a gas outburst shock wave), the revolving door can be quickly pushed closed by external force, avoiding the revolving door's inability to respond quickly due to blockage or other reasons, and effectively blocking the shock wave. At the same time, under normal circumstances, by collecting the air pressure difference between the windward and leeward sides, the electromagnetic lock switch is controlled, eliminating the need for manual opening of the revolving door and allowing for timely ventilation, making it convenient to use and quite practical.

[0016] 2. With the fluorescent pull plate installed, operators can see it in the dark and pull it to pull the wire rope out from the first fixing hole. At this time, the wire rope pulls the tension spring, and the wire rope is supported by the second limiting post. The connection end of the wire rope has a redundant length to avoid interfering with the normal operation of the electromagnetic lock. Thus, the wire rope pulls the electromagnetic lock's latch to retract, thereby releasing the limit on the revolving door and allowing it to be opened. At the same time, the installed battery provides power after power failure, with a continuous operation of at least 2 hours. The shock-absorbing plate buffers the impact force on the revolving door. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a mining ventilation window proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the window frame structure of a mine ventilation window proposed in this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the rotating door structure of a mine ventilation window proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of a limiting frame structure for a mine ventilation window proposed in this utility model;

[0021] Figure 5 for Figure 2 A partial structural diagram of A in the middle;

[0022] Figure 6 for Figure 3 A schematic diagram of the partial structure of B in the diagram;

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the locking tongue groove of a mine ventilation window proposed in this utility model.

[0024] In the diagram: 1. Window frame; 2. Revolving door; 3. Limiting frame; 4. Moving plate; 5. Push-pull electromagnet; 6. Limiting groove; 7. Spring; 8. First limiting post; 9. Intrinsically safe mine pressure sensor; 10. Fixing groove; 11. Electromagnetic lock; 12. First fixing hole; 13. Second limiting post; 14. Steel wire rope; 15. Tension spring; 16. Lock tongue groove; 17. Fluorescent pull plate; 18. Battery; 19. Protective cover; 20. Support shaft; 21. Bearing; 22. Protective plate; 23. Protective chamber; 24. Second fixing hole; 25. Limiting plate; 26. Shock absorber. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figures 1-7A mining ventilation window includes a window frame 1, a rotating door 2 movably fitted inside the window frame 1, a PLC controller fixedly installed on one side of the window frame 1, and a door closing assembly. The door closing assembly is located on one side of the window frame 1 and is used to close the rotating door 2. The door closing assembly includes a limit frame 3, which is fixedly installed on one side of the window frame 1. A movable plate 4 is movably fitted inside the limit frame 3. A first circular through hole is opened on one side of the movable plate 4, and a push-pull electromagnet 5 is fixedly fitted onto the inner wall of the first circular through hole. The iron 5 model is Langshuo-LSD-1564B. A limit groove 6 is opened on one side of the window frame 1. The telescopic shaft of the push-pull electromagnet 5 is inserted into the limit groove 6. A spring 7 is fixedly installed on one side of the inner side of the limit frame 3. The spring 7 is fixedly installed on one side of the moving plate 4. A first limit post 8 is fixedly installed on the bottom surface of the moving plate 4. A mining intrinsically safe air pressure sensor 9 (such as KGY5 type) is fixedly installed on the front and rear sides of the window frame 1 respectively. A manual opening component is used to facilitate the operator to manually open the revolving door 2.

[0029] In use, the intrinsically safe mine-use air pressure sensor 9 monitors the airflow direction and pressure changes in real time. When the intrinsically safe mine-use air pressure sensor 9 detects reverse airflow (such as a gas outburst shock wave), it immediately cuts off the power to the electromagnetic lock 11. At the same time, it immediately activates the push-pull electromagnet 5 to retract, causing the locking tongue to move out of the limiting groove 6. Thus, it no longer limits the moving plate 4. At this time, the spring 7 pushes the moving plate 4 to move inside the limiting frame 3. The moving plate 4 then drives the first limiting column 8 to push the revolving door 2 to rotate. As a result, the rotating door 2 drives the protective plate 22 to push the locking tongue of the electromagnetic lock 11 to retract and enter the locking tongue groove 16. The electromagnetic lock 11 limits the locking tongue groove 16 and the revolving door 2, thus locking the revolving door 2.

[0030] In this embodiment, the manual opening component includes: a fixing groove 10, which is located inside one side of the window frame 1. An electromagnetic lock 11 is fixedly installed inside the fixing groove 10. A steel wire rope 14 is fixedly installed at the end of the telescopic shaft of the electromagnetic lock 11. A first fixing hole 12 is provided on one side of the window frame 1, which is connected to the fixing groove 10. The steel wire rope 14 passes through the inside of the first fixing hole 12. A tension spring 15 is fixedly installed on one side of the inside of the fixing groove 10. The tension spring 15 is fixedly installed with the steel wire rope 14. A second limiting post 13 is fixedly installed at the top and bottom of the inside of the fixing groove 10. A fluorescent pull plate 17 is fixedly installed at the end of the steel wire rope 14. A lock tongue groove 16 is provided on one side of the revolving door 2.

[0031] In use, the fluorescent pull plate 17 allows the operator to see it in the dark and pull it to pull the wire rope 14 out of the first fixing hole 12. At this time, the wire rope 14 pulls the tension spring 15, and the wire rope 14 is supported by the second limiting post 13. The connecting end of the wire rope 14 has a redundant length so as not to interfere with the normal operation of the electromagnetic lock 11. Thus, the wire rope 14 pulls the locking tongue of the electromagnetic lock 11 to retract, thereby releasing the limit on the revolving door 2 and opening the revolving door 2.

[0032] In this embodiment, a protective cover 19 and a battery 18 are fixedly installed on one side of the window frame 1. The battery 18 and the PLC controller are both located inside the protective cover 19. The electromagnetic lock 11 and the push-pull electromagnet 5 are both electrically connected to the PLC controller. A support shaft 20 is fixedly installed inside the window frame 1. Two bearings 21 are fixedly sleeved on the outer circular wall of the support shaft 20. The bearings 21 are of the XUNDAZC-maintenance-free bearing 6206 type, which is effective in preventing dust and water. The bearings 21 are fixedly sleeved with the shaft hole of the revolving door 2. A protective plate 22 is fixedly installed on the inner side wall of the lock tongue groove 16. A protective chamber 23 is fixedly installed on one side of the limit frame 3. A second fixing hole 24 is opened on the bottom surface of the protective chamber 23. The second fixing hole 24 is movably sleeved with the first limit post 8. A limit plate 25 is fixedly installed on one side of the window frame 1. A shock-absorbing plate 26 is fixedly installed on one side of the limit plate 25.

[0033] When in use, the battery 18 provides power after power failure, providing at least 2 hours of continuous operation. The shock-absorbing plate 26 cushions the impact of the revolving door 2.

[0034] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: When a user uses the window frame 1, the intrinsically safe mining pressure sensor 9 monitors the airflow direction and pressure changes in real time. When the intrinsically safe mining pressure sensor 9 detects reverse airflow (such as a gas outburst shock wave), it immediately cuts off the power to the electromagnetic lock 11. Simultaneously, it immediately activates the push-pull electromagnet 5 to retract, causing the latch to move out of the limiting groove 6. Therefore, it no longer limits the movement plate 4. At this time, the spring 7 pushes the movement plate 4 to move inside the limiting frame 3. The moving movement plate 4 then drives the first limiting column 8 to rotate the revolving door 2. The rotating revolving door 2 then drives the protective plate 22 to retract the latch of the electromagnetic lock 11 and enter the latch groove 16. The electromagnetic lock 11 then locks the door. The tongue groove 16 and the revolving door 2 are limited, thereby locking the revolving door 2. In addition, the intrinsically safe mine-use air pressure sensor 9 is installed on the window frame to monitor the airflow direction and pressure changes in real time, and to collect the air pressure difference (ΔP) between the windward and leeward sides in real time. This controls the switch of the electromagnetic lock 11 (opening when ΔP≥50Pa and closing when ΔP<10Pa), so that the revolving door 2 does not need to be manually opened by the user. This achieves the effect of closing the revolving door 2. When reverse airflow occurs (such as gas outburst shock wave), the revolving door 2 can be quickly pushed to close by external force, avoiding the revolving door 2's inability to respond quickly due to blockage or other reasons, and effectively blocking the shock wave. At the same time, under normal circumstances, by collecting the air pressure difference between the windward and leeward sides, the electromagnetic lock 11 is controlled to allow ventilation in a timely manner without the need for the user to manually open the revolving door 2, which is convenient and practical.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mine ventilation window, comprising a window frame (1), wherein a rotating door (2) is movably fitted inside the window frame (1), and a PLC controller is fixedly installed on one side of the window frame (1), characterized in that, Also includes: A door closing assembly is provided on one side of the window frame (1) for closing the revolving door (2). The door closing assembly includes: a limiting frame (3), which is fixedly installed on one side of the window frame (1). A movable plate (4) is movably sleeved inside the limiting frame (3). A first circular through hole is provided on one side of the movable plate (4). A push-pull electromagnet (5) is fixedly sleeved on the inner wall of the first circular through hole. A limiting groove (6) is provided on one side of the window frame (1). The telescopic shaft of the push-pull electromagnet (5) is inserted into the limiting groove (6). A spring (7) is fixedly installed on one side of the inside of the limiting frame (3). The spring (7) is fixedly installed on one side of the movable plate (4). A first limiting post (8) is fixedly installed on the bottom surface of the movable plate (4). Intrinsically safe mine pressure sensors (9) are fixedly installed on the front and rear sides of the window frame (1). A manual opening component is provided to facilitate manual opening of the revolving door (2) by operators.

2. A mine ventilation window according to claim 1, characterized in that, The manual opening component includes: a fixing groove (10), which is opened on the inner side of the window frame (1), an electromagnetic lock (11) is fixedly installed inside the fixing groove (10), a steel wire rope (14) is fixedly installed at the end of the telescopic shaft of the electromagnetic lock (11), a first fixing hole (12) is opened on one side of the window frame (1), the first fixing hole (12) is connected to the fixing groove (10), the steel wire rope (14) passes through the interior of the first fixing hole (12), a tension spring (15) is fixedly installed on one side of the interior of the fixing groove (10), the tension spring (15) is fixedly installed with the steel wire rope (14), a second limiting post (13) is fixedly installed at the top and bottom of the interior of the fixing groove (10), a fluorescent pull plate (17) is fixedly installed at the end of the steel wire rope (14), and a lock tongue groove (16) is opened on one side of the revolving door (2).

3. A mine ventilation window according to claim 2, characterized in that, A protective cover (19) and a storage battery (18) are fixedly installed on one side of the window frame (1). The storage battery (18) and the PLC controller are both located inside the protective cover (19). The electromagnetic lock (11) and the push-pull electromagnet (5) are both electrically connected to the PLC controller.

4. A mine ventilation window according to claim 1, characterized in that, A support shaft (20) is fixedly installed inside the window frame (1). Two bearings (21) are fixedly sleeved on the outer circular wall of the support shaft (20). The bearings (21) are fixedly sleeved with the shaft hole of the revolving door (2).

5. A mine ventilation window according to claim 2, characterized in that, A protective plate (22) is fixedly installed on the inner side wall of the locking tongue groove (16).

6. A mine ventilation window according to claim 1, characterized in that, A protective chamber (23) is fixedly installed on one side of the limiting frame (3). A second fixing hole (24) is opened on the bottom surface of the protective chamber (23). The second fixing hole (24) is movably connected to the first limiting post (8).

7. A mine ventilation window according to claim 1, characterized in that, A limiting plate (25) is fixedly installed on one side of the inside of the window frame (1), and a shock-absorbing plate (26) is fixedly installed on one side of the limiting plate (25).

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