Coal mine outburst prevention and airflow reversal prevention mechanism

Abstract

The utility model discloses a coal mine outburst prevention and airflow reversal prevention mechanism which comprises a pipe wall, a connecting belt is fixedly connected to the position, close to the right side, of the bottom of the pipe wall, a bearing ring is fixedly connected to the end, away from the pipe wall, of the top of the connecting belt, and a sealing cover is connected to the inner side of the bearing ring through a bearing. The position, close to the middle, of the inner side of the pipe wall is fixedly connected with a limiting frame, the position, close to the left side, of the outer surface of the pipe wall is movably sleeved with an adjusting frame, the top of the adjusting frame is in threaded connection with a threaded rod, and the bottom of the adjusting frame is movably sleeved with a limiting rod. According to the utility model, by arranging the baffle plate and the sensing head of the contact sensor, the continuity and the stability of mine production are kept, the production efficiency and the economic benefit are favorably improved, the use safety of equipment is favorably improved, and meanwhile, the pipe wall is prevented from being unnecessarily closed, so that the ventilation smoothness of a mine can be kept, and the risk of mine gas accumulation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine sudden outburst prevention and wind flow reversal prevention, in particular to a coal mine sudden outburst prevention and wind flow reversal prevention mechanism. Background Art

[0002] A coal mine refers to an underground or surface mine that mines coal resources. Coal mining methods can be divided into two types: underground mining and open-pit mining. Underground mining is suitable for coal resources that are buried deeper, and usually requires the construction of engineering facilities such as tunnels and shafts. Open-pit mining is suitable for coal located at a shallower surface, and is mined directly on the surface through mechanical equipment. During the mining process of a coal mine, coal and gas outbursts may occur. Coal and gas outbursts are a type of special gas outburst phenomenon, that is, under the action of pressure, broken coal and gas are suddenly ejected from the coal body into the mining space in large quantities.

[0003] At present, the existing coal mine anti-blowout and anti-windflow reversal mechanisms are generally used to control the closing and opening of the equipment through simple detection. However, in actual coal mines, the situation is complex and multifaceted. Using this method may have certain disadvantages. The equipment may not detect the gas, but the windflow reversal at both ends of the coal mine may exist. There may also be a situation where the gas only surges up, causing part of the gas to come into contact with the detection equipment under the condition of wind reflux, resulting in misjudgment of the detection equipment. Utility Model Content

[0004] The utility model aims to solve the problem that simple detection in the prior art may result in misjudgment, and proposes a coal mine sudden prevention and wind flow reversal mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A coal mine anti-blowout and anti-windflow reversal mechanism comprises a pipe wall, a connecting belt is fixedly connected to the bottom of the pipe wall near the right side, a bearing ring is fixedly connected to the top end of the connecting belt away from the pipe wall, a sealing cover is connected to the inner bearing of the bearing ring, a limiting frame is fixedly connected to the inner side of the pipe wall near the middle, an adjusting frame is movably sleeved on the outer surface of the pipe wall near the left side, a threaded rod is threadedly connected to the top of the adjusting frame, and a limiting rod is movably sleeved on the bottom of the adjusting frame.

[0007] Preferably, a contact sensor head is fixedly connected to the right side of the limiting frame near the front and back, a baffle is hingedly connected to the left side of the limiting frame near the middle, and a contact sensor probe is fixedly connected to the right side of the baffle near the front and back.

[0008] Preferably, thread grooves are provided on the inner side and outer surface of the tube wall near the right end, and the portion of the sealing cover near the center of the tube wall is threadedly connected to the tube wall through the thread grooves.

[0009] Preferably, a blocking frame is fixedly connected to the middle of the limiting frame near the front and back, and when the baffle plate fits with the blocking frame, the contact sensor head and the contact sensor probe also fit with each other.

[0010] Preferably, a limiting block is fixedly connected to a position near the middle of the left side of the limiting frame, and a gas detection device is fixedly connected to a position of the limiting block near the center of the limiting frame.

[0011] Preferably, the right end of the threaded rod is transmission-connected to a first servo motor, the first servo motor is fixedly connected to the top of the tube wall, the left end of the threaded rod is bearing-connected to the top of the tube wall, the left and right sides of the limit rod are fixedly connected to connecting blocks, the top of the connecting block is fixedly connected to the tube wall, and the outer surface of the adjustment frame near the front and back is fixedly connected to a second servo motor.

[0012] Preferably, the second servo motor is transmission-connected to a connecting arm on one side close to the center of the adjusting frame, the connecting arm is bearing-connected to the outer surface of the adjusting frame close to the middle, the top of the connecting arm is fixedly connected to a closing cover, the bottom of the closing cover is fixedly sleeved with a sealing rubber ring, and the part of the closing cover close to the bottom matches the inner side of the tube wall.

[0013] Compared with the prior art, the utility model provides a coal mine anti-burst and anti-wind flow reversal mechanism, which has the following beneficial effects:

[0014] 1. The coal mine anti-breach and anti-windflow reversal mechanism is provided with a baffle and a contact sensor head. In actual use, when windflow reversal occurs, the baffle will be actively closed. After the baffle is closed, the contact sensor probe contacts the contact sensor head, so that the equipment enters the next step of detection. The equipment will be controlled to close only when the gas detection equipment detects gas, but at this time the baffle and the limiting frame have also been closed, which can avoid the occurrence of windflow reversal. At the same time, after the gas detection equipment detects gas, when the contact sensor head and the contact sensor probe are not in contact, the closing cover will not be closed, which avoids misjudgment, maintains the continuity and stability of mine production, is beneficial to improving production efficiency and economic benefits, and is beneficial to improving the safety of equipment use. At the same time, avoiding unnecessary closure of the pipe wall can keep the mine ventilation unobstructed and reduce the risk of gas accumulation in the mine.

[0015] 2. The coal mine anti-blowout and anti-windflow reversal mechanism can adjust the position of the closing cover by providing a threaded rod and a connecting arm. When it is not needed, the closing cover can be moved to the top of the pipe wall to avoid the closing cover affecting the ventilation on both sides of the pipe wall, which is conducive to ensuring the ventilation quality under normal conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a coal mine anti-burst and anti-windflow reversal mechanism proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the opening structure of a sealing cover of a coal mine anti-burst and anti-windflow reversal mechanism proposed by the utility model;

[0018] Figure 3 A schematic diagram of a baffle of a coal mine anti-burst and anti-wind flow reversal mechanism proposed by the utility model;

[0019] Figure 4 This is an exploded schematic diagram of the overall structure of a limiting frame of a coal mine anti-burst and anti-windflow reversal mechanism proposed by the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the peripheral structure of an adjusting frame machine of a coal mine anti-blowout and anti-windflow reversal mechanism.

[0021] In the figure: 1. pipe wall; 2. connecting belt; 3. bearing ring; 4. sealing cover; 5. first servo motor; 6. threaded rod; 7. connecting block; 8. limit rod; 9. adjusting frame; 10. second servo motor; 11. connecting arm; 12. closing cover; 13. threaded groove; 14. limiting frame; 15. baffle; 16. limiting block; 17. gas detection equipment; 18. contact sensor sensor head; 19. contact sensor probe; 20. blocking frame; 21. sealing rubber ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Reference Figure 1-5 A coal mine anti-burst and anti-windflow reversal mechanism comprises a pipe wall 1, a connecting belt 2 is fixedly connected to the bottom of the pipe wall 1 near the right side, a bearing ring 3 is fixedly connected to the top end of the connecting belt 2 away from the pipe wall 1, a sealing cover 4 is connected to the inner bearing of the bearing ring 3, a limiting frame 14 is fixedly connected to the inner side of the pipe wall 1 near the middle, a limiting block 16 is fixedly connected to the left side of the limiting frame 14 near the middle, the limiting block 16 is provided to prevent the baffle 15 from over-turning, a gas detection device 17 is fixedly connected to the limiting block 16 near the center of the limiting frame 14, an adjusting frame 9 is movably sleeved on the outer surface of the pipe wall 1 near the left side, a threaded rod 6 is threadedly connected to the top of the adjusting frame 9, a limiting rod 8 is movably sleeved on the bottom of the adjusting frame 9, and a first servo motor is transmission-connected to the right end of the threaded rod 6. The machine 5, the first servo motor 5 is fixedly connected to the top of the pipe wall 1, the left end of the threaded rod 6 is connected to the top of the pipe wall 1 by a bearing, the left and right sides of the limit rod 8 are fixedly connected with the connecting blocks 7, the top of the connecting block 7 is fixedly connected to the pipe wall 1, the outer surface of the adjusting frame 9 near the front and back positions are fixedly connected with the second servo motor 10, the second servo motor 10 is connected to the side of the adjusting frame 9 near the center of the adjusting frame 9 by a driving connection with a connecting arm 11, the connecting arm 11 is connected to the outer surface of the adjusting frame 9 near the middle position by a bearing, the top of the connecting arm 11 is fixedly connected with a closing cover 12, the bottom of the closing cover 12 is fixedly sleeved with a sealing rubber ring 21, the sealing rubber ring 21 is provided to improve the sealing effect of the closing cover 12 and the pipe wall 1 when connected, and the part of the closing cover 12 near the bottom matches the inner side of the pipe wall 1.

[0025] Reference Figure 1-5 Described, the right side of the limiting frame 14 near the front and back is fixedly connected with a contact sensor head 18, the left side of the limiting frame 14 near the middle is hingedly connected with a baffle 15, the middle part of the limiting frame 14 near the front and back is fixedly connected with a blocking frame 20, when the baffle 15 is in contact with the blocking frame 20, the contact sensor head 18 is also in contact with the contact sensor probe 19, the contact sensor head 18 and the contact sensor probe 19 are provided, when the wind reversal at both ends of the mine is conveniently detected through the baffle 15, the right side of the baffle 15 near the front and back is fixedly connected with the contact sensor probe 19, the inner and outer surfaces of the pipe wall 1 near the right end are provided with thread grooves 13, the thread grooves 13 are provided, double thread fixation can be performed, while ensuring stability, further improving the sealing effect, the sealing cover 4 is threadedly connected to the pipe wall 1 through the thread groove 13 near the center of the pipe wall 1.

[0026] In the utility model, when in use, under normal conditions, the sealing cover 4 can be rotated to open the pipe wall 1, and at the same time, the first servo motor 5 can drive the threaded rod 6 to rotate and cooperate with the limit rod 8 to adjust the position of the adjustment frame 9, so that the adjustment frame 9 is close to the left end of the pipe wall 1, and then the second servo motor 10 drives the connecting arm 11 so that the connecting arm 11 drives the closing cover 12 to move upward to the pipe wall 1, so as to avoid the closing cover 12 blocking the pipe wall 1 from being ventilated. At the same time, under normal conditions, wind enters from the right end of the pipe wall 1, pushes open the baffle 15, so that the baffle 15 fits with both sides of the limiting block 16, so that the pipe wall 1 is ventilated normally. When the wind flow reverses, the baffle 15 is always in an inclined state under the obstruction of the limiting block 16, and will not appear to be perpendicular to the limiting frame 14. This will cause the baffle 15 to quickly close with the limiting frame 14 under the obstruction of the blocking frame 20 when the wind flow reverses, to prevent the wind flow reversal from further developing. When the gas detection equipment 17 detects gas, the first servo motor 5 and the second servo motor 10 can be used to control the closing of the closing cover 12 and the pipe wall 1, and the sealing rubber ring 21 can be used to ensure that the pipe wall 1 and the closing cover 12 have a better sealing effect.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine anti-burst and anti-wind flow reversal mechanism, comprising a pipe wall (1), characterized in that: A connecting belt (2) is fixedly connected to the bottom of the tube wall (1) near the right side, a bearing ring (3) is fixedly connected to the top end of the connecting belt (2) away from the tube wall (1), a sealing cover (4) is connected to the inner bearing of the bearing ring (3), a limiting frame (14) is fixedly connected to the inner side of the tube wall (1) near the middle, an adjusting frame (9) is movably sleeved on the outer surface of the tube wall (1) near the left side, a threaded rod (6) is threadedly connected to the top of the adjusting frame (9), and a limiting rod (8) is movably sleeved on the bottom of the adjusting frame (9).

2. A coal mine wind flow reversal mechanism for preventing sudden outbursts and preventing wind flow reversal according to claim 1, characterized in that: A contact sensor head (18) is fixedly connected to the right side of the limiting frame (14) near the front and back, a baffle (15) is hingedly connected to the left side of the limiting frame (14) near the middle, and a contact sensor probe (19) is fixedly connected to the right side of the baffle (15) near the front and back.

3. A coal mine sudden prevention and wind flow reversal mechanism according to claim 1, characterized in that: The inner side and outer surface of the tube wall (1) near the right end are both provided with thread grooves (13), and the portion of the sealing cover (4) near the center of the tube wall (1) is threadedly connected to the tube wall (1) via the thread grooves (13).

4. A coal mine wind flow reversal prevention mechanism according to claim 2, characterized in that: The middle part of the limiting frame (14) near the front and back is fixedly connected with a blocking frame (20), and when the baffle (15) and the blocking frame (20) are in contact, the contact sensor head (18) and the contact sensor probe (19) are also in contact.

5. A coal mine wind flow reversal mechanism for preventing sudden outbursts and preventing wind flow reversal according to claim 1, characterized in that: A limiting block (16) is fixedly connected to a position near the middle of the left side of the limiting frame (14), and a gas detection device (17) is fixedly connected to a position near the center of the limiting frame (14).

6. A coal mine sudden prevention and wind flow reversal mechanism according to claim 1, characterized in that: The right end of the threaded rod (6) is transmission-connected to a first servo motor (5), the first servo motor (5) is fixedly connected to the top of the tube wall (1), the left end of the threaded rod (6) is bearing-connected to the top of the tube wall (1), the left and right sides of the limit rod (8) are fixedly connected to connecting blocks (7), the top of the connecting block (7) is fixedly connected to the tube wall (1), and the outer surface of the adjustment frame (9) near the front and back is fixedly connected to a second servo motor (10).

7. A coal mine sudden prevention and wind flow reversal mechanism according to claim 6, characterized in that: A connecting arm (11) is drivingly connected to one side of the second servo motor (10) near the center of the adjusting frame (9); the connecting arm (11) is bearing-connected to the outer surface of the adjusting frame (9) near the middle; a closing cover (12) is fixedly connected to the top of the connecting arm (11); a sealing rubber ring (21) is fixedly sleeved on the bottom of the closing cover (12); and a portion of the closing cover (12) near the bottom matches the inner side of the pipe wall (1).

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