A mine gas detection and alarm device

Abstract

The utility model relates to gas detection equipment technical field, and disclose a kind of mine gas detection alarm equipment, including alarm box, first guide hole and air inlet hole are respectively set in the two sides of alarm box, the position corresponding first guide hole of the side of alarm box is fixedly installed with first connecting cylinder, the end of first connecting cylinder away from alarm box is provided with detachable protective cover, the inside of protective cover is provided with detachable filter screen.The utility model, its "L" shape limiting groove is convenient for the easy introduction of trouser ear, and by rotating nut drive guide rod and limiting block slide in sliding slot, the trouser ear after introduction can be self-adapting extrusion locking.This fixing mode makes that equipment main body can be stably fixed in personnel waist, always keep preset posture, so as to ensure that air inlet hole and first guide hole are not blocked, so that subsequent air suction detection process can be reliably carried out, realizes the real sense of mobile continuous monitoring.

Description

Technical Field

[0001] This utility model relates to the field of gas detection equipment technology, and in particular to a gas detection alarm device for mines. Background Technology

[0002] In mine safety production, real-time detection of hazardous gases (such as methane) is a crucial link in ensuring personnel safety. Traditional fixed gas detection devices have limited monitoring range and cannot cover personnel movement paths; while existing portable detectors are mostly handheld or simply hung on the body, making them prone to collisions, falling off, or improper placement in the complex underground working environment, leading to blocked air inlets or inaccurate detection. Furthermore, the high dust concentration in mine roadways easily clogs the detector's air inlet, and the internal components are inconvenient to maintain after prolonged use, affecting the continuity and reliability of detection. Therefore, we propose a gas detection alarm device for mines. Utility Model Content

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a gas detection and alarm device for mines.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a gas detection and alarm device for mines, comprising an alarm box, with a first guide hole and an air inlet on each side of the alarm box; a first connecting cylinder fixedly installed on the side of the alarm box corresponding to the position of the first guide hole; a detachable protective cover provided at the end of the first connecting cylinder away from the alarm box; a detachable filter screen provided inside the protective cover; an air intake structure provided inside the first connecting cylinder; a detachable connecting cover, which is spherical, provided on the side of the alarm box corresponding to the position of the air inlet; and a fixed guide cylinder provided inside the alarm box, with both ends of the guide cylinder... Two second connecting cylinders are fixedly installed. The ends of the two second connecting cylinders away from the guide cylinder are respectively fixedly installed on the inner side of the alarm box and corresponding to the positions of the first guide hole and the air inlet. Two symmetrically distributed detection alarms are provided on the inner side of the guide cylinder. A detachable first fixing block is provided on the outer side of the alarm box. A second fixing block is fixedly installed on the side of the first fixing block. A limit groove is opened on the side of the second fixing block. The limit groove is "L" shaped. A sliding groove is opened on the inner side of the limit groove. A limit block is slidably installed inside the sliding groove. Springs are fixedly installed at equal intervals on the side of the limit block. The side of the spring away from the limit block is fixedly installed on the side of the sliding groove.

[0005] Preferably, the air intake structure includes a connecting frame fixedly installed inside the first connecting cylinder, a fixed electric motor is provided on the side of the connecting frame, and a fan blade is fixedly installed at the output end of the electric motor.

[0006] Preferably, an internally threaded cylinder is fixedly installed on the outer side of the alarm box at the position corresponding to the air inlet, and an externally threaded cylinder is threadedly connected to the inner side of the internally threaded cylinder. A connecting cover is fixedly installed on the end face of the externally threaded cylinder, and a limit ring is fixedly installed on the outer side of the externally threaded cylinder.

[0007] Preferably, a drainage block is fixedly installed on the inner side of the guide tube.

[0008] Preferably, the alarm box has slots on both the top and bottom sides, and the first fixing block has a locking block fixedly installed at both the top and bottom ends, with the two locking blocks respectively engaging inside the two slots.

[0009] Preferably, the second fixing block has two grooves on its side corresponding to the sliding groove, the limiting block has a guide rod fixedly installed on its side corresponding to the groove, the guide rod has a guide groove on its side, the second fixing block has a connecting block fixedly installed on its side corresponding to the guide rod, the connecting block has a threaded post fixedly installed on its side corresponding to the guide groove, the threaded post extends downward through the guide groove to the bottom side of the guide rod, and a nut is threadedly connected to the outer side of the threaded post. Beneficial effects

[0010] This utility model provides a gas detection and alarm device for mines. It has the following beneficial effects: (1) The gas detection alarm device in the mine achieves quick installation and disassembly of the alarm box and the main body through the snap-fit ​​structure formed by the first fixing block and the snap-fit ​​block, which is convenient for maintenance or replacement. More importantly, the special fixing clamping mechanism set on the outside of the alarm box, which consists of the second fixing block, the limiting groove, the limiting block and the spring, can be firmly matched with the operator's trousers and belt. Its "L"-shaped limiting groove facilitates the easy insertion of the trousers, and by rotating the nut to drive the guide rod and the limiting block to slide in the groove, the inserted trousers can be adaptively squeezed and locked. This fixing method allows the main body of the device to be stably fixed on the waist of the personnel and always maintain the preset posture, thereby ensuring that the air inlet and the first guide hole are not blocked, so that the subsequent air intake detection process can be carried out reliably, realizing true mobile continuous monitoring.

[0011] (2) The gas detection and alarm equipment in this mine uses a quick-release module at the air inlet, consisting of an internal threaded cylinder, an external threaded cylinder, and a spherical connecting cover. It can be disassembled for cleaning or replacement by rotating, effectively preventing dust blockage. The spherical connecting cover can collect ambient gas from multiple directions, improving sampling efficiency. In the core detection part, the guide cylinder and the two symmetrically arranged detection alarms inside it form a stable detection environment. The centrally fixed flow guide block evenly divides the incoming airflow into two streams, forcing the gas to flow along both sides and fully wrapping the two detection sensors. This greatly increases the contact area and time between the gas and the sensors, avoids detection dead zones, and ensures fast response and accurate and reliable readings. This airflow path works in conjunction with an active air intake structure located at the outlet end, consisting of fan blades driven by an electric motor. The rotation of the fan blades creates a stable negative pressure inside the equipment, actively drawing external gas sequentially through the connecting cover, air inlet, second connecting cylinder, detection chamber, another second connecting cylinder, first guide hole, and first connecting cylinder, forming a complete, efficient, and directionally controllable active sampling and detection cycle. This greatly reduces the interference of environmental airflow fluctuations on the detection results and comprehensively improves the performance of the equipment in complex mining environments. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side sectional view of the present invention; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial structural diagram of the connecting frame of this utility model.

[0015] Legend: 1. Alarm box; 2. First guide hole; 3. First connecting cylinder; 4. Protective cover; 5. Filter screen; 6. Air inlet; 7. Connecting cover; 8. Internal threaded cylinder; 9. External threaded cylinder; 10. Limiting ring; 11. Guide cylinder; 12. Second connecting cylinder; 13. Detection alarm; 14. Drainage block; 15. Slot; 16. Locking block; 17. First fixing block; 18. Second fixing block; 19. Limiting groove; 20. Slide groove; 21. Limiting block; 22. Groove; 23. Guide rod; 24. Spring; 25. Guide groove; 26. Connecting block; 27. Threaded column; 28. Nut; 29. ​​Connecting frame; 30. Electric motor; 31. Fan blade. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figure 1 - Figure 4As shown, a gas detection and alarm device for mines includes an alarm box 1. A first guide hole 2 and an air inlet 6 are respectively opened on both sides of the alarm box 1. A first connecting cylinder 3 is fixedly installed on the side of the alarm box 1 corresponding to the position of the first guide hole 2. A detachable protective cover 4 is provided at the end of the first connecting cylinder 3 away from the alarm box 1. A detachable filter screen 5 is provided inside the protective cover 4. An air intake structure is provided inside the first connecting cylinder 3. A detachable connecting cover 7 is provided on the side of the alarm box 1 corresponding to the position of the air inlet 6. The connecting cover 7 is spherical. A fixed guide cylinder 11 is provided inside the alarm box 1. A second connecting cylinder 12 is fixedly installed at both ends of the guide cylinder 11. The ends of the two second connecting cylinders 12 away from the guide cylinder 11 are respectively fixedly installed on the inner side of the alarm box 1, corresponding to the positions of the first guide hole 2 and the air inlet 6. Two symmetrically distributed detection alarms 13 are arranged on the inner side of the guide cylinder 11. A detachable first fixing block 17 is arranged on the outer side of the alarm box 1. A second fixing block 18 is fixedly installed on the side of the first fixing block 17. A limiting groove 19 is opened on the side of the second fixing block 18. The limiting groove 19 is "L" shaped. A sliding groove 20 is opened on the inner side of the limiting groove 19. A limiting block 21 is slidably installed inside the slide groove 20. Springs 24 are fixedly installed at equal intervals on the side of the limiting block 21. The side of the springs 24 away from the limiting block 21 is fixedly installed on the side of the slide groove 20. The trouser ear is moved through the limiting groove 19 into the inside of the second fixing block 18, and then the limiting block 21 squeezes the trouser ear. The side of the second fixing block 18 contacts the belt, so that the second fixing block 18 is fixed on the operator's waist. During walking, the air intake structure inside the first connecting cylinder 3 causes the airflow to pass sequentially through the connecting cover 7, the air inlet 6, the second connecting cylinder 12, and the detection alarm. The airflow passes through the device 13, the second connecting tube 12, the first guide hole 2, and the first connecting tube 3. The concentration of methane gas is detected by the detection alarm 13 inside the guide tube 11. It is easy to carry. The air intake structure includes a connecting frame 29 fixedly installed inside the first connecting tube 3. A fixed electric motor 30 is provided on the side of the connecting frame 29. A fan blade 31 is fixedly installed at the output end of the electric motor 30. When the electric motor 30 is started, the electric motor 30 drives the fan blade 31 to rotate. The rotating fan blade 31 transports the airflow inside the alarm box 1 to the position of the first connecting tube 3. An internally threaded cylinder 8 is fixedly installed on the outer side of the alarm box 1 at the position corresponding to the air inlet 6. An externally threaded cylinder 9 is threadedly connected to the inner side of the internally threaded cylinder 8. A connecting cover 7 is fixedly installed on the end face of the externally threaded cylinder 9. A limit ring 10 is fixedly installed on the outer side of the externally threaded cylinder 9. The externally threaded cylinder 9 and the internally threaded cylinder 8 are threaded together and limited by the limit ring 10 to facilitate the detachable installation of the connecting cover 7. A flow guide block 14 is fixedly installed on the inner side of the guide cylinder 11. The flow guide block 14 divides the air duct inside the guide cylinder 11, allowing the airflow to flow from the side of the flow guide block 14 to fully contact the detection alarm 13. The alarm box 1 has slots 15 on both the upper and lower sides. The first fixing block 17 has locking blocks 16 fixedly installed at both the upper and lower ends. The two locking blocks 16 are respectively locked into the two slots 15. The alarm box 1 is fixed by the first fixing block 17 and the two locking blocks 16. The second fixing block 18 has two grooves 22 on its side corresponding to the position of the sliding groove 20. The guide rod 23 is fixedly installed on the side of the limiting block 21 corresponding to the position of the groove 22. The guide rod 23 has a guide groove 25 on its side. The connecting block 26 is fixedly installed on the side of the second fixing block 18 corresponding to the position of the guide rod 23. The threaded post 27 is fixedly installed on the side of the connecting block 26 corresponding to the position of the guide groove 25. The threaded post 27 extends downward through the guide groove 25 to the bottom side of the guide rod 23. The outer side of the threaded post 27 is threadedly connected to a nut 28. Rotating the nut 28 causes the guide rod 23 to move. The guide rod 23 causes the limiting block 21 to move, so that the limiting block 21 presses and fixes the trouser ear inside the limiting groove 19. The initial position of the limiting block 21 is fixed by the spring 24, so that there is a gap between the limiting block 21 and the side of the limiting groove 19 to facilitate the movement of the trouser ear.

[0018] The working principle of this utility model: In use, the trouser ear is moved through the limiting groove 19 into the interior of the second fixing block 18, and then the limiting block 21 squeezes the trouser ear. The side of the second fixing block 18 contacts the belt, thus fixing the second fixing block 18 to the operator's waist. During walking, the air intake structure inside the first connecting cylinder 3 causes the airflow to flow sequentially through the connecting cover 7, the air inlet 6, the second connecting cylinder 12, the detection alarm 13, the first guide hole 2, and the first connecting cylinder 3. The concentration of methane gas is then detected by the detection alarm 13 inside the guide cylinder 11. It is easy to carry. By starting the electric motor 30, the electric motor 30 drives the fan blade 31 to rotate. The rotating fan blade 31 pushes the airflow inside the alarm box 1 towards the position of the first connecting cylinder 3. The external threaded cylinder 9 and the internal threaded cylinder 8 are threaded together and limited by a limiting ring 10 to facilitate the detachable installation of the connecting cover 7. The air duct inside the guide cylinder 11 is divided by the guide block 14 so that the airflow can flow from the side of the guide block 14 to fully contact the detection alarm 13. The alarm box 1 is fixed by the first fixing block 17 and two locking blocks 16. Rotating the nut 28 moves the guide rod 23, which in turn moves the limiting block 21 so that the limiting block 21 presses and fixes the trouser ear inside the limiting groove 19. The initial position of the limiting block 21 is fixed by the spring 24 so that there is a gap between the limiting block 21 and the side of the limiting groove 19 to facilitate the movement of the trouser ear.

[0019] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas detection and alarm device for mines, comprising an alarm box (1), wherein a first guide hole (2) and an air inlet (6) are respectively provided on both sides of the alarm box (1), characterized in that: A first connecting cylinder (3) is fixedly installed on the side of the alarm box (1) at the position corresponding to the first guide hole (2). A detachable protective cover (4) is provided at the end of the first connecting cylinder (3) away from the alarm box (1). A detachable filter screen (5) is provided inside the protective cover (4). An air intake structure is provided inside the first connecting cylinder (3). A detachable connecting cover (7) is provided on the side of the alarm box (1) at the position corresponding to the air inlet (6). The connecting cover (7) is spherical. A fixed guide cylinder (11) is provided inside the alarm box (1). A second connecting cylinder (12) is fixedly installed at both ends of the guide cylinder (11). The ends of the two second connecting cylinders (12) away from the guide cylinder (11) are respectively fixedly installed on the alarm box (1). On the inner side of the guide tube (11) and corresponding to the positions of the first guide hole (2) and the air inlet (6), two symmetrically distributed detection alarms (13) are provided on the inner side of the guide tube (11). A detachable first fixing block (17) is provided on the outer side of the alarm box (1). A second fixing block (18) is fixedly installed on the side of the first fixing block (17). A limiting groove (19) is opened on the side of the second fixing block (18). The limiting groove (19) is "L" shaped. A sliding groove (20) is opened on the inner side of the limiting groove (19). A limiting block (21) is slidably installed inside the sliding groove (20). A spring (24) is fixedly installed at equal intervals on the side of the limiting block (21). The side of the spring (24) away from the limiting block (21) is fixedly installed on the side of the sliding groove (20).

2. The gas detection and alarm device for mines according to claim 1, characterized in that: The air intake structure includes a connecting frame (29) fixedly installed inside the first connecting cylinder (3), and a fixed electric motor (30) is provided on the side of the connecting frame (29). A fan blade (31) is fixedly installed at the output end of the electric motor (30).

3. The gas detection and alarm device for mines according to claim 1, characterized in that: An internal threaded cylinder (8) is fixedly installed on the outside of the alarm box (1) at the position corresponding to the air inlet (6). An external threaded cylinder (9) is threadedly connected to the inside of the internal threaded cylinder (8). A connecting cover (7) is fixedly installed on the end face of the external threaded cylinder (9). A limit ring (10) is fixedly installed on the outside of the external threaded cylinder (9).

4. The gas detection and alarm device for mines according to claim 1, characterized in that: A drainage block (14) is fixedly installed on the inner side of the guide tube (11).

5. A gas detection and alarm device for mines according to claim 1, characterized in that: The alarm box (1) has slots (15) on both the top and bottom sides. The first fixing block (17) has a block (16) fixedly installed at both the top and bottom ends. The two blocks (16) are respectively engaged in the inside of the two slots (15).

6. A gas detection and alarm device for mines according to claim 1, characterized in that: The second fixing block (18) has two grooves (22) on its side corresponding to the position of the slide groove (20). The limiting block (21) has a guide rod (23) fixedly installed on its side corresponding to the position of the groove (22). The guide rod (23) has a guide groove (25) on its side. The second fixing block (18) has a connecting block (26) fixedly installed on its side corresponding to the position of the guide rod (23). The connecting block (26) has a threaded post (27) fixedly installed on its side corresponding to the position of the guide groove (25). The threaded post (27) extends downward through the guide groove (25) to the bottom side of the guide rod (23). The outer side of the threaded post (27) is threaded with a nut (28).

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