Intelligent monitoring and self-resetting based wind shaft explosion-proof cover

Abstract

The utility model relates to the technical field of air shaft explosion -proof cover, put forward a kind of air shaft explosion -proof cover based on intelligent monitoring and self-resetting, including hexagonal well mouth frame, the top of hexagonal well mouth frame swing articulates and is formed sealing surface with six circular array distribution's triangular cover plate, the bottom of hexagonal well mouth frame outer wall is fixedly connected with installation bottom plate, the upper of hexagonal well mouth frame is provided with airtight pressure cylinder, the airtight pressure cylinder is coaxially arranged with hexagonal well mouth frame. Through the above technical scheme, it is solved that the existing technology lotus petal type explosion -proof cover its top cover is formed by splicing multiple sector petal cover plates, and during reset, it is easy to cause improper control of splicing gap between cover plates, and incomplete sealing condition occurs, and such explosion -proof cover generally lacks real-time sealing detection function, cannot timely find sealing failure problem, and further possibly causes underground air leakage, destroys the stability of ventilation system, and even affects the problem of mine safety production.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof covers for ventilation shafts, specifically, to an explosion-proof cover for ventilation shafts based on intelligent monitoring and self-resetting. Background Technology

[0002] Explosion-proof covers for ventilation shafts are key safety devices installed at the ventilation shaft openings of mines. Their core function is to protect the main ventilation fan and shaft opening facilities from impact damage by quickly releasing pressure in the event of a gas or coal dust explosion underground, while also providing support for the rapid restoration of the ventilation system after a disaster.

[0003] Currently, the mainstream types of explosion-proof covers for ventilation shafts include gravity-type, hydraulic automatic reset type, and lotus petal type. Among them, the lotus petal type explosion-proof cover is widely used due to its significant advantages, such as high sealing accuracy, strong impact resistance, and high reset efficiency, which can effectively meet the safety requirements of high-gas and large mines.

[0004] However, the lotus petal-shaped explosion-proof cover is composed of multiple fan-shaped petal-shaped cover plates. During the reset process, improper control of the gaps between the cover plates can easily lead to incomplete sealing. Furthermore, these types of explosion-proof covers generally lack real-time sealing detection functions, making it impossible to detect sealing failures in a timely manner. This can potentially cause air leakage underground, disrupt the stability of the ventilation system, and even affect safe production in the mine. Therefore, this utility model proposes an explosion-proof cover for ventilation shafts based on intelligent monitoring and self-resetting. Utility Model Content

[0005] This invention proposes an explosion-proof cover for ventilation shafts based on intelligent monitoring and self-resetting. It solves the problem in related technologies where the top cover of the lotus petal-shaped explosion-proof cover is composed of multiple fan-shaped petal-shaped cover plates. During the resetting process, improper control of the splicing gap between the cover plates can easily lead to incomplete sealing. Moreover, such explosion-proof covers generally lack real-time sealing detection functions, making it impossible to detect sealing failures in time. This can lead to underground air leakage, damage to the stability of the ventilation system, and even affect the safe production of the mine.

[0006] The technical solution of this utility model is as follows: A ventilation shaft explosion-proof cover based on intelligent monitoring and self-resetting includes a hexagonal wellhead frame. Six triangular cover plates arranged in a circular array are movably hinged to the top of the hexagonal wellhead frame to form a sealing surface. A mounting base plate is fixedly connected to the bottom of the outer wall of the hexagonal wellhead frame. An airtight pressure cylinder is arranged above the hexagonal wellhead frame, coaxially with the hexagonal wellhead frame. The bottom of the airtight pressure cylinder abuts against the upper surface of the triangular cover plates. Six airtight pressure strips arranged in a circular array are fixedly inserted into the outer wall of the airtight pressure cylinder. The airtight pressure strips are located above the gap between two triangular cover plates, with their bottoms abutting against the upper surface of the triangular cover plates. A pressing mechanism is arranged above the airtight pressure cylinder and fixedly connected to the upper surface of the mounting base plate. An alarm mechanism is fixedly inserted into one side of the airtight pressure cylinder. A control mechanism is arranged on the side of the triangular cover plate away from the center of the airtight pressure cylinder and fixedly connected to the upper surface of the mounting base plate.

[0007] Preferably, both the airtight pressure cylinder and the airtight pressure strip are provided with airtight rubber strips at their bottoms, and are pressed against the upper surface of the triangular cover plate by the airtight rubber strips.

[0008] Preferably, the clamping mechanism includes a U-shaped bracket, which is fixedly connected to the upper surface of the mounting base plate. A hydraulic cylinder is fixedly connected to the center of the top of the U-shaped bracket. The output end of the hydraulic cylinder slides through the upper surface of the U-shaped bracket and is fixedly connected to the top of the airtight cylinder. Two symmetrically arranged guide rods slide through the upper surface of the U-shaped bracket. The bottom end of the guide rod is fixedly connected to the outer wall of the airtight cylinder through a connecting block. A spring plate is fixedly connected to the top of the guide rod. A return spring is slidably sleeved on the outer wall of the guide rod. The return spring is located between the spring plate and the top of the U-shaped bracket.

[0009] Preferably, the return spring is configured in a compressed state.

[0010] Preferably, the alarm mechanism includes a slide cylinder, which is fixedly inserted into the outer wall of the airtight pressure cylinder. A piston is slidably connected in the slide cylinder, and a ventilated mesh is fixedly connected to the inner wall of the slide cylinder. The ventilated mesh is located on the side of the piston closer to the airtight pressure cylinder. A trigger button is fixedly connected to the side of the ventilated mesh closer to the piston. An air hole is opened at the end of the slide cylinder away from the airtight pressure cylinder.

[0011] Preferably, the trigger button is electrically connected to the alarm system in the ventilation shaft explosion-proof cover control system.

[0012] Preferably, the control mechanism includes a T-shaped mounting rod, which is fixedly connected to the upper surface of the mounting base plate. A second hydraulic cylinder is movably hinged to the side of the T-shaped mounting rod near the triangular cover plate. The end of the second hydraulic cylinder near the triangular cover plate is movably hinged to the upper surface of the triangular cover plate. Two symmetrically arranged guide wheels are fixedly connected to the top of the T-shaped mounting rod. A pull rope is fixedly connected to the upper surface of the triangular cover plate. A counterweight is fixedly connected to the end of the pull rope away from the triangular cover plate through the two guide wheels.

[0013] The beneficial effects of this invention are as follows: Through the coordinated design of the airtight pressure cylinder and the airtight pressure strip, this device, under the stable pressure provided by the clamping mechanism, can simultaneously cover the central splicing area of ​​the triangular cover plate and the splicing gap between adjacent cover plates. This structure can specifically fill the sealing blind spots that easily occur after the spliced ​​cover plate is reset, reducing the risk of air leakage from a physical perspective. Compared with the traditional lotus petal-shaped explosion-proof cover, the sealing reliability is significantly improved. The matching sealing monitoring and alarm mechanism can monitor the sealing status of the cover plate in real time. Once the seal fails due to aging of the sealing components, misalignment of the cover plate, or other reasons, an alarm can be triggered immediately and feedback can be sent to the control system. This avoids the problem of "difficult to detect sealing failure" in traditional explosion-proof covers, ensuring that the explosion-proof cover is always in an effective working state and providing a guarantee for safe production in the mine. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the control mechanism in this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the airtight pressure cylinder in this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the slide tube in this utility model.

[0020] In the diagram: 1. Hexagonal wellhead frame; 11. Triangular cover plate; 12. Mounting base plate; 13. Airtight pressure cylinder; 14. Airtight pressure strip;

[0021] 2. Clamping mechanism; 21. U-shaped bracket; 22. No. 1 hydraulic cylinder; 23. Guide rod; 24. Spring plate; 25. Return spring;

[0022] 3. Alarm mechanism; 31. Slide cylinder; 32. Piston; 33. Ventilation mesh; 34. Trigger button; 35. Air vent;

[0023] 4. Control mechanism; 41. T-shaped mounting rod; 42. No. 2 hydraulic cylinder; 43. Guide wheel; 44. Pull rope; 45. Counterweight. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] Example

[0026] like Figures 1-5 As shown, this embodiment proposes an explosion-proof cover for a ventilation shaft based on intelligent monitoring and self-resetting, including a hexagonal wellhead frame 1. Six triangular cover plates 11 arranged in a circular array are movably hinged to the top of the hexagonal wellhead frame 1 to form a sealing surface. A mounting base plate 12 is fixedly connected to the bottom of the outer wall of the hexagonal wellhead frame 1. An airtight pressure cylinder 13 is disposed above the hexagonal wellhead frame 1, coaxially arranged with the hexagonal wellhead frame 1. The bottom of the airtight pressure cylinder 13 abuts against the upper surface of the triangular cover plates 11. An insert is fixedly mounted on the outer wall of the airtight pressure cylinder 13. The device is equipped with six airtight pressure strips 14 arranged in a circular array. The airtight pressure strips 14 are located above the gap between two triangular cover plates 11. The bottom of the airtight pressure strips 14 abuts against the upper surface of the triangular cover plates 11. A pressing mechanism 2 is provided above the airtight pressure cylinder 13. The pressing mechanism 2 is fixedly connected to the upper surface of the mounting base plate 12. An alarm mechanism 3 is fixedly inserted into one side of the airtight pressure cylinder 13. A control mechanism 4 is provided on the side of the triangular cover plate 11 away from the center of the airtight pressure cylinder 13. The control mechanism 4 is fixedly connected to the upper surface of the mounting base plate 12.

[0027] Both the airtight pressure cylinder 13 and the airtight pressure strip 14 are provided with airtight rubber strips at their bottoms, and are pressed against the upper surface of the triangular cover plate 11 by the airtight rubber strips. The airtight rubber strips can improve the airtightness between the airtight pressure cylinder 13 and the airtight pressure strip 14 and the multiple triangular cover plates 11.

[0028] The clamping mechanism 2 includes a U-shaped bracket 21, which is fixedly connected to the upper surface of the mounting base plate 12. A hydraulic cylinder 22 is fixedly connected to the center of the top of the U-shaped bracket 21. The output end of the hydraulic cylinder 22 slides through the upper surface of the U-shaped bracket 21 and is fixedly connected to the top of the airtight cylinder 13. Two symmetrically arranged guide rods 23 slide through the upper surface of the U-shaped bracket 21. The bottom end of the guide rod 23 is fixedly connected to the outer wall of the airtight cylinder 13 through a connecting block. A spring plate 24 is fixedly connected to the top of the guide rod 23. A return spring 25 is slidably sleeved on the outer wall of the guide rod 23. The return spring 25 is located between the spring plate 24 and the top of the U-shaped bracket 21. The clamping mechanism 2 can provide stable pressure to the airtight cylinder 13.

[0029] The return spring 25 is set in a compressed state. When the first hydraulic cylinder 22 is depressurized, the compressed return spring 25 will drive the airtight pressure cylinder 13 and the airtight pressure strip 14 to move upward quickly through the guide rod 23, leaving space for the opening of multiple triangular cover plates 11.

[0030] The alarm mechanism 3 includes a slide cylinder 31, which is fixedly inserted into the outer wall of the airtight pressure cylinder 13. A piston 32 is slidably connected in the slide cylinder 31. A ventilated mesh 33 is fixedly connected to the inner wall of the slide cylinder 31. The ventilated mesh 33 is located on the side of the piston 32 closer to the airtight pressure cylinder 13. A trigger button 34 is fixedly connected to the side of the ventilated mesh 33 closer to the piston 32. An air hole 35 is opened at the end of the slide cylinder 31 away from the airtight pressure cylinder 13. When the sealing performance of the closed explosion-proof cover fails, the piston 32 in the alarm mechanism 3 will press the trigger button 34.

[0031] The trigger button 34 is electrically connected to the alarm system in the ventilation shaft explosion-proof cover control system. The trigger button 34 can feed back the failure of the explosion-proof cover's sealing performance to the alarm system in the control system and issue an alarm.

[0032] The control mechanism 4 includes a T-shaped mounting rod 41, which is fixedly connected to the upper surface of the mounting base plate 12. A second hydraulic cylinder 42 is movably hinged to the side of the T-shaped mounting rod 41 near the triangular cover plate 11. The end of the second hydraulic cylinder 42 near the triangular cover plate 11 is movably hinged to the upper surface of the triangular cover plate 11. Two symmetrically arranged guide wheels 43 are fixedly connected to the top of the T-shaped mounting rod 41. A pull rope 44 is fixedly connected to the upper surface of the triangular cover plate 11. The end of the pull rope 44 away from the triangular cover plate 11 passes through the two guide wheels 43 and is fixedly connected to a counterweight 45. The control mechanism 4 can control the opening and closing of the triangular cover plate 11 through the second hydraulic cylinder 42.

[0033] Specifically, the usage method of this device is as follows:

[0034] Triangular cover plate 11 reset stage: When the device needs to reset the triangular cover plate 11, start the second hydraulic cylinder 42. Its telescopic end extends and drives the triangular cover plate 11 to rotate around the hinge point of the hexagonal well frame 1, and gather towards the center until it is spliced ​​to form a complete circular explosion-proof sealing surface.

[0035] Sealing reinforcement stage: After resetting, start the first hydraulic cylinder 22. Its output end pushes the airtight pressure cylinder 13 to move smoothly down along the guide rod 23. Simultaneously, it drives multiple airtight pressure strips 14 to pass through the airtight rubber strip at the bottom and gradually press them onto the sealing surface formed by splicing the triangular cover plate 11. This structure can specifically cover the body surface of the triangular cover plate 11, especially fill the splicing gap between adjacent cover plates, and eliminate the sealing blind spot after resetting the traditional spliced ​​cover plate from a physical level.

[0036] During the seal failure monitoring phase: Under normal ventilation, the underground air pressure is lower than atmospheric pressure (negative pressure state). If the seal fails due to aging of the airtight rubber strip, misalignment of the triangular cover plate 11, or other reasons, a negative pressure will form inside the airtight pressure cylinder 13 due to air leakage. At this time, the piston 32 inside the slide cylinder 31 moves along the slide cylinder 31 towards the trigger button 34 under the push of the external atmospheric pressure, and finally presses the trigger button 34. The trigger button 34 immediately feeds back the seal failure signal to the mine explosion-proof cover control system in real time, and simultaneously triggers the audible and visual alarm to achieve timely early warning of seal abnormalities.

[0037] Explosion-induced pressure relief opening phase: When an explosion occurs underground, and the high-pressure shock wave acts on the closed triangular cover plate 11, the built-in pressure relief valves of hydraulic cylinder 42 and hydraulic cylinder 22 simultaneously sense the overpressure signal and automatically open to relieve pressure. After losing the downward pressure of hydraulic cylinder 22, the airtight pressure cylinder 13 immediately moves rapidly upward along the guide rod 23 under the elastic restoring force of the return spring 25, reserving sufficient space for the opening of the triangular cover plate 11; at the same time, after the pressure relief of hydraulic cylinder 42, it releases the constraint on the triangular cover plate 11, and the triangular cover plate 11 is quickly lifted outward under the combined action of the shock wave thrust and the counterweight 45, achieving efficient pressure relief and protecting the ventilation fan and wellhead facilities.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ventilation shaft explosion-proof cover based on intelligent monitoring and self-resetting, characterized in that, The well includes a hexagonal wellhead frame (1), the top of which is movably hinged with six triangular cover plates (11) arranged in a circular array to form a sealing surface. A mounting base plate (12) is fixedly connected to the bottom of the outer wall of the hexagonal wellhead frame (1). An airtight pressure cylinder (13) is provided above the hexagonal wellhead frame (1), and the airtight pressure cylinder (13) is coaxially arranged with the hexagonal wellhead frame (1). The bottom of the airtight pressure cylinder (13) abuts against the upper surface of the triangular cover plates (11). Six airtight pressure strips (14) arranged in a circular array are fixedly inserted into the outer wall of the airtight pressure cylinder (13). The airtight pressure strip (14) is located above the gap between the two triangular cover plates (11). The bottom of the airtight pressure strip (14) abuts against the upper surface of the triangular cover plate (11). A pressing mechanism (2) is provided above the airtight pressure cylinder (13). The pressing mechanism (2) is fixedly connected to the upper surface of the mounting base plate (12). An alarm mechanism (3) is fixedly inserted into one side of the airtight pressure cylinder (13). A control mechanism (4) is provided on the side of the triangular cover plate (11) away from the center of the airtight pressure cylinder (13). The control mechanism (4) is fixedly connected to the upper surface of the mounting base plate (12).

2. The explosion-proof cover for a ventilation shaft based on intelligent monitoring and self-resetting as described in claim 1, characterized in that, Both the airtight pressure cylinder (13) and the airtight pressure strip (14) are provided with airtight rubber strips at their bottoms, and are pressed against the upper surface of the triangular cover plate (11) by the airtight rubber strips.

3. The explosion-proof cover for a ventilation shaft based on intelligent monitoring and self-resetting as described in claim 1, characterized in that, The clamping mechanism (2) includes a U-shaped bracket (21), which is fixedly connected to the upper surface of the mounting base plate (12). A hydraulic cylinder (22) is fixedly connected to the center of the top of the U-shaped bracket (21). The output end of the hydraulic cylinder (22) slides through the upper surface of the U-shaped bracket (21) and is fixedly connected to the top of the airtight cylinder (13). Two symmetrically arranged guide rods (23) slide through the upper surface of the U-shaped bracket (21). The bottom end of the guide rod (23) is fixedly connected to the outer wall of the airtight cylinder (13) through a connecting block. A spring plate (24) is fixedly connected to the top of the guide rod (23). A return spring (25) is slidably sleeved on the outer wall of the guide rod (23). The return spring (25) is located between the spring plate (24) and the top of the U-shaped bracket (21).

4. The explosion-proof cover for a ventilation shaft based on intelligent monitoring and self-resetting as described in claim 3, characterized in that, The return spring (25) is set in a compressed state.

5. A ventilation shaft explosion-proof cover based on intelligent monitoring and self-resetting according to claim 1, characterized in that, The alarm mechanism (3) includes a slide cylinder (31), which is fixedly inserted into the outer wall of the airtight pressure cylinder (13). A piston (32) is slidably connected in the slide cylinder (31). A breathable mesh (33) is fixedly connected to the inner wall of the slide cylinder (31). The breathable mesh (33) is located on the side of the piston (32) close to the airtight pressure cylinder (13). A trigger button (34) is fixedly connected to the side of the breathable mesh (33) close to the piston (32). An air hole (35) is opened at the end of the slide cylinder (31) away from the airtight pressure cylinder (13).

6. A ventilation shaft explosion-proof cover based on intelligent monitoring and self-resetting according to claim 5, characterized in that, The trigger button (34) is electrically connected to the alarm system in the ventilation shaft explosion-proof cover control system.

7. A ventilation shaft explosion-proof cover based on intelligent monitoring and self-resetting according to claim 1, characterized in that, The control mechanism (4) includes a T-shaped mounting rod (41), which is fixedly connected to the upper surface of the mounting base plate (12). A second hydraulic cylinder (42) is movably hinged to the side of the T-shaped mounting rod (41) near the triangular cover plate (11). The end of the second hydraulic cylinder (42) near the triangular cover plate (11) is movably hinged to the upper surface of the triangular cover plate (11). Two symmetrically arranged guide wheels (43) are fixedly connected to the top of the T-shaped mounting rod (41). A pull rope (44) is fixedly connected to the upper surface of the triangular cover plate (11). A weight (45) is fixedly connected to the end of the pull rope (44) away from the triangular cover plate (11) through the two guide wheels (43).

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