Goaf coal spontaneous combustion gas monitoring device

Abstract

The utility model relates to the technical field of gas monitoring, in particular to a goaf coal spontaneous combustion gas monitoring device which comprises a detector body, a protective cover is arranged outside the detector body, a limiting column groove in the top face of the interior of the protective cover is connected with a protruding column on the top of the detector body in a clamped mode, and a bearing bottom plate is hinged to the lower portion of the side wall of the protective cover. The detector main body is installed and fixed through mutual cooperation of the protective cover, the bearing bottom plate, the hoisting rod and the limiting bottom plate, the bearing bottom plate, the hoisting rod and the limiting bottom plate are installed on the protective cover, and while the protective cover protects the detector main body, the reciprocating screw rod rotating continuously can drive the annular scraping plate to reciprocate up and down in the opening direction of the protective cover. And the outer wall of the detector body is scraped and cleaned through mutual matching between the fitting opening and the outer wall of the opening of the protective cover, so that dust cannot be accumulated around the through hole to influence air circulation, and stability monitoring of the detector body on the air in the goaf is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, specifically a monitoring device for spontaneous combustion of coal gas in goaf areas. Background Technology

[0002] Spontaneous combustion of coal in goaf areas is a serious safety problem in coal mining. In goaf areas formed after mining, the remaining coal can oxidize and heat up under suitable conditions, eventually leading to spontaneous combustion. The main causes of spontaneous combustion in goaf areas include a large amount of residual coal, poor ventilation, and air leakage. Spontaneous combustion not only destroys coal resources but can also trigger major accidents such as gas explosions and fires, endangering the lives of underground personnel, damaging mine equipment and facilities, and releasing large amounts of harmful gases, causing environmental pollution. Common measures to prevent spontaneous combustion in goaf areas include rationally arranging the ventilation system, reducing air leakage in the goaf, spraying inhibitors, grouting, and monitoring the temperature and gas composition of the goaf.

[0003] Currently, existing technologies use air monitors in goaf areas to monitor the air composition in real time. The outer protective cover of the monitor can provide some protection without hindering airflow. However, the air in goaf areas has a high dust content, and after a certain period of use, dust may accumulate on the holes of the protective cover, affecting airflow and thus the monitor's effectiveness in monitoring the air.

[0004] Therefore, a monitoring device for spontaneous combustion of coal gas in goaf areas is proposed to address the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies and solve the problem that the outer protective cover of the monitor can provide a certain degree of protection without hindering airflow, while the air in the goaf contains a high dust content, and the through holes on the protective cover may become covered with dust after a certain period of use, affecting airflow and thus the monitor's air monitoring effectiveness, a goaf coal spontaneous combustion gas monitoring device is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The coal spontaneous combustion gas monitoring device in the goaf area of ​​this utility model includes a detector body, a protective cover is provided on the outside of the detector body, the inner top surface of the protective cover has a limiting post groove that is engaged with the top protrusion of the detector body, a supporting base plate is hinged to the lower side wall of the protective cover, the top rubber pad of the supporting base plate is in contact with the bottom surface of the detector body, and a wall scraping assembly is provided on the outside of the protective cover. The wall scraping assembly includes an annular scraper, the top surface of the annular scraper has multiple fitting openings, and the multiple fitting openings respectively fit and slide with the outer wall of multiple strips of the protective cover.

[0007] Preferably, a lead screw sleeve is fixedly connected to the side wall of the annular scraper, a track slider is fixedly connected to the inner wall of the lead screw sleeve, a reciprocating lead screw is slidably installed between the inner walls of the lead screw sleeve, and the outer wall track of the reciprocating lead screw is engaged with the outer wall of the track slider for sliding.

[0008] Preferably, both ends of the reciprocating lead screw are fixedly connected to lead screw brackets via bearings, and the lead screw brackets are fixedly connected to the outer walls of both ends of the protective cover.

[0009] Preferably, the adjacent sidewalls of the two lead screw supports are provided with arc-shaped grooves, and the arc-shaped grooves are located on the periphery of the protective cover.

[0010] Preferably, a U-shaped mounting bracket is fixed between the side walls of the two lead screw supports.

[0011] Preferably, guide rod sleeves are fixedly connected to both sides of the lead screw sleeve, and limit guide rods are slidably installed on the inner walls of the two guide rod sleeves. The two ends of the two limit guide rods are fixedly connected to the adjacent side walls of the two lead screw supports.

[0012] Preferably, a motor is mounted on the outside of one of the lead screw supports, and the output shaft of the motor is connected to the axis of the reciprocating lead screw.

[0013] Preferably, a lifting rod is installed on the outside of another of the lead screw supports, and a limiting base plate is rotatably hinged to the outside of the lifting rod, with the top surface of the limiting base plate in contact with the bottom surface of the supporting base plate.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, the detector body is installed and fixed by the cooperation between the protective cover and the supporting base plate, hoisting rod and limiting base plate installed on it. While the protective cover protects the detector body, the continuously rotating reciprocating screw can drive the annular scraper to move up and down in the opening direction of the protective cover. By matching the opening and the outer wall of the protective cover opening, the outer wall is scraped and cleaned, so that dust will not accumulate around the through hole and affect the air circulation, thus ensuring the stability monitoring of the air in the goaf by the detector body. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the protective cover in this utility model;

[0019] Figure 3 This is a perspective view of the detector body in this utility model;

[0020] Figure 4 This is a perspective view of the annular scraper in this utility model;

[0021] Figure 5 This is a three-dimensional view of the disassembled lifting rod and limiting base plate in this utility model;

[0022] Legend:

[0023] 1. Detector body; 2. Protective cover; 21. Support base plate; 3. Scraper assembly; 31. Annular scraper; 311. Fitting opening; 32. Screw sleeve; 321. Track slider; 33. Reciprocating screw; 34. Screw bracket; 341. Arc groove; 4. U-shaped mounting bracket; 35. Guide rod sleeve; 36. Limiting guide rod; 37. Motor; 5. Lifting rod; 6. Limiting base plate. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figure 1 - Figure 5 This utility model provides a monitoring device for spontaneous combustion gas in goaf coal, including a detector body 1. A protective cover 2 is provided on the outside of the detector body 1. A limiting post groove on the inner top surface of the protective cover 2 engages with a protruding post on the top of the detector body 1. A supporting base plate 21 is hinged to the lower side wall of the protective cover 2. The top rubber pad of the supporting base plate 21 contacts the bottom surface of the detector body 1. A wall scraping assembly 3 is provided on the outside of the protective cover 2. The wall scraping assembly 3 includes an annular scraper 31. Multiple fitting openings 311 are provided on the top surface of the annular scraper 31. The multiple fitting openings 311 respectively... After the detector body 1 is placed inside the protective cover 2, its upper protrusion engages with the groove of the limiting post inside the protective cover 2. Then, the support plate 21 is flipped up so that the rubber pad on it contacts the bottom surface of the detector body 1, thereby achieving the limiting installation of the detector body 1 by the protective cover 2. The wall scraping assembly 3, as the main structure for scraping and cleaning the dust on the outside of the protective cover 2, achieves the wall scraping and cleaning of the protective cover 2 by reciprocating movement of the wall scraping assembly 3 on the annular scraper 31 after engaging with the outer strip of the protective cover 2 through the engagement opening 311.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a screw sleeve 32 is fixedly connected to the side wall of the annular scraper 31, and a track slider 321 is fixedly connected to the inner wall of the screw sleeve 32. A reciprocating screw 33 is slidably installed between the inner walls of the screw sleeve 32, and the outer wall track of the reciprocating screw 33 is engaged with the outer wall of the track slider 321 for sliding.

[0028] During operation, the screw sleeve 32 fixed to the outer wall of the annular scraper 31 slides and engages with the inner wall of the reciprocating screw 33 track through the track slider 321, so that the annular scraper 31 can reciprocate within the track stroke range of the reciprocating screw 33 during the rotation of the reciprocating screw 33, thereby realizing the scraping cleaning of the protective cover 2 by the scraping assembly 3.

[0029] like Figure 2 and Figure 4 As shown, both ends of the reciprocating lead screw 33 are fixedly connected to lead screw brackets 34 via bearings. The lead screw brackets 34 are fixedly connected to the outer walls of both ends of the protective cover 2. Each adjacent side wall of the two lead screw brackets 34 has an arc-shaped groove 341 located around the periphery of the protective cover 2. A U-shaped mounting bracket 4 is fixedly connected between the side walls of the two lead screw brackets 34. Guide rod sleeves 35 are fixedly connected to both sides of the lead screw sleeve. Limiting guide rods 36 are slidably installed on the inner walls of both guide rod sleeves 35. Both ends of the two limiting guide rods 36 are fixedly connected to the adjacent side walls of the two lead screw brackets 34, thus fixing them to the protective cover 2. The lead screw bracket 34 on the outer wall of the protective cover 2 fixes the reciprocating lead screw 33 and the limiting guide rod 36. The limiting guide rod 36 slides and engages with the outer guide rod sleeve 35 of the lead screw sleeve 32 to further prevent the annular scraper 31 from rotating synchronously during the rotation of the reciprocating lead screw 33. The opening of the arc-shaped groove 341 allows the lead screw bracket 34 to make way for the up and down movement of the annular scraper 31, so that the annular scraper 31 can completely scrape and clean the opening of the protective cover 2, increasing the rationality of the device structure. The U-shaped mounting bracket 4 fixes the entire device.

[0030] like Figure 1 As shown, a motor 37 is mounted on the outside of one of the lead screw supports 34. The output shaft of the motor 37 is connected to the shaft of the reciprocating lead screw 33, and the motor 37 provides rotational output force to the reciprocating lead screw 33.

[0031] like Figure 2 and Figure 5 As shown, another lead screw bracket 34 is externally mounted with a lifting rod 5. The lifting rod 5 is externally hinged to a limiting base plate 6. The top surface of the limiting base plate 6 is in contact with the bottom surface of the supporting base plate 21. When the lifting rod 5 is rotated so that its top surface is in contact with the bottom surface of the supporting base plate 21, it is flipped and limited. When it is necessary to disassemble and maintain the detector body 1 inside the protective cover 2, it is necessary to rotate the limiting base plate 6 so that its top surface is separated from the bottom surface of the supporting base plate 21.

[0032] Working principle: After the U-shaped mounting bracket 4 fixes the entire device, the detector body 1 is placed inside the protective cover 2. The protruding post on the detector body 1 engages with the groove of the limiting post inside the protective cover 2. Then, the support plate 21 is flipped up, so that the rubber pad on it contacts the bottom surface of the detector body 1, thus achieving the limiting installation of the detector body 1 by the protective cover 2. The wall scraping assembly 3, as the main structure for scraping and cleaning the dust on the outside of the protective cover 2, achieves the wall scraping and cleaning of the protective cover 2 by reciprocating movement of the annular scraper 31 after the matching opening 311 engages with the outer strip of the protective cover 2. The screw sleeve 32, fixed to the outer wall of the annular scraper 31, slides and engages with the inner wall of the reciprocating screw 33 through the track slider 321, so that the annular scraper 31 can reciprocate within the track stroke range of the reciprocating screw 33 during the rotation of the reciprocating screw 33, thereby achieving the wall scraping assembly. 3. For the scraping and cleaning of the protective cover 2, the screw bracket 34 fixed to the outer wall of the protective cover 2 fixes the reciprocating screw 33 and the limiting guide rod 36. The limiting guide rod 36 and the outer guide rod sleeve 35 of the screw sleeve 32 slide and fit together to further prevent the annular scraper 31 from rotating synchronously during the rotation of the reciprocating screw 33. The opening of the arc groove 341 allows the screw bracket 34 to make way for the up and down movement of the annular scraper 31, so that the annular scraper 31 can completely scrape and clean the opening of the protective cover 2, increasing the rationality of the device structure. The motor 37 provides rotational output force for the reciprocating screw 33. When the outer limiting base plate 6 of the rotating hoisting rod 5 is rotated until its top surface contacts the bottom surface of the supporting base plate 21, it is flipped and limited. When it is necessary to disassemble and maintain the detector body 1 inside the protective cover 2, it is necessary to rotate the limiting base plate 6 until its top surface is separated from the bottom surface of the supporting base plate 21.

[0033] 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 monitoring device for spontaneous combustion of coal gas in goaf areas, characterized in that: The device includes a detector body (1), and a protective cover (2) is provided on the outside of the detector body (1). The inner top surface of the protective cover (2) is fitted with a limiting post groove and the top protrusion of the detector body (1). A supporting base plate (21) is hinged to the lower side wall of the protective cover (2). The top rubber pad of the supporting base plate (21) is in contact with the bottom surface of the detector body (1). A wall scraping assembly (3) is provided on the outside of the protective cover (2). The wall scraping assembly (3) includes an annular scraper (31). The top surface of the annular scraper (31) is provided with multiple fitting openings (311). The multiple fitting openings (311) respectively fit and slide with multiple strips of the outer wall of the protective cover (2).

2. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 1, characterized in that: A lead screw sleeve (32) is fixedly connected to the side wall of the annular scraper (31), and a track slider (321) is fixedly connected to the inner wall of the lead screw sleeve (32). A reciprocating lead screw (33) is slidably installed between the inner walls of the lead screw sleeve (32), and the outer wall track of the reciprocating lead screw (33) is engaged with the outer wall of the track slider (321) for sliding.

3. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 2, characterized in that: Both ends of the reciprocating lead screw (33) are fixedly connected to lead screw brackets (34) via bearings, and the lead screw brackets (34) are fixedly connected to the outer walls of both ends of the protective cover (2).

4. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 3, characterized in that: Both of the two lead screw supports (34) have arc-shaped grooves (341) on their adjacent sidewalls, and the arc-shaped grooves (341) are located on the periphery of the protective cover (2).

5. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 4, characterized in that: A U-shaped mounting bracket (4) is fixed between the side walls of the two lead screw supports (34).

6. The coal spontaneous combustion gas monitoring device in the goaf according to claim 5, characterized in that: Both sides of the lead screw sleeve are fixedly connected to guide rod sleeves (35), and the inner walls of the two guide rod sleeves (35) are slidably installed with limit guide rods (36), and the two ends of the two limit guide rods (36) are fixedly connected to the adjacent side walls of the two lead screw supports (34).

7. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 6, characterized in that: One of the lead screw supports (34) has a motor (37) mounted on its exterior, and the output shaft of the motor (37) is connected to the axis of the reciprocating lead screw (33).

8. The coal spontaneous combustion gas monitoring device in the goaf area according to claim 7, characterized in that: Another screw support (34) is externally mounted with a lifting rod (5), which is externally hinged to a limiting base plate (6), the top surface of which is in contact with the bottom surface of the supporting base plate (21).

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