Coal mine underground upper corner gas ventilation device

Abstract

The underground coal mine upper corner gas ventilation device comprises an underground coal mine ventilation pipe and a plug, the plug is assembled at the front end of the underground coal mine ventilation pipe, an adjusting assembly is assembled on the outer wall of the underground coal mine ventilation pipe, and the plug is assembled at the output end of the adjusting assembly. According to the underground coal mine ventilation pipe, the main through hole and the side through holes are designed, air extraction from multiple angles is achieved, the problem that due to single-face air extraction, the flowability of air on the other side of the pipe is poor is solved, the air suction efficiency can be effectively improved, and the air extraction efficiency is improved. And a pointed-end plate is further designed, when the pointed-end plate is separated from the plug, air exhaust work can be completed through the main through hole, when impurities need to be removed from the main through hole, the plug is driven by the self-locking air cylinder to move, the pointed end is inserted into the main through hole, then the impurities in the main through hole can be pushed out and removed, the blocking frequency is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of underground coal mine ventilation, and in particular provides an upper corner gas ventilation device for an underground coal mine. Background Art

[0002] The ventilation in the upper corner area of ​​the coal mine is poor, and the temperature and humidity are high. It is easy to accumulate gas released from the intersection of the goaf and the mining face, resulting in a high gas concentration in this area. Therefore, the upper corner gas ventilation device of the coal mine needs to be ventilated at all times. For example, a coal mine upper corner gas ventilation device with application number CN202420073701.7, although it can achieve enhanced gas emission efficiency, still needs to shut down the equipment when the filter structure at the air inlet position needs to be thoroughly cleaned, resulting in ventilation at this time. Moreover, only using a single-sided exhaust method can easily cause the gas flowability on the other side of the pipeline to deteriorate, thereby affecting the overall ventilation effect. Current ventilation devices generally lack dynamic adjustment capabilities, cannot handle impurity blockage during operation, and fail to optimize multi-area gas suction, limiting the continuity of safe operations underground in coal mines. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a coal mine upper corner gas ventilation device in order to solve the problem that when the filter structure at the air inlet position needs to be thoroughly cleaned, the equipment still needs to be shut down, resulting in the inability to play a ventilation role at this time, and only using a single-sided exhaust method easily causes the gas fluidity on the other side of the pipeline to deteriorate and thus affect the overall ventilation effect.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a coal mine underground upper corner gas ventilation device, including a coal mine underground ventilation pipe and a plug, the front end of the coal mine underground ventilation pipe is equipped with a plug, the outer wall of the coal mine underground ventilation pipe is equipped with an adjustment component, and the plug is assembled at the output end of the adjustment component, the side wall of the coal mine underground ventilation pipe is fixed with a gusset plate by bolts, and power components are provided on the inner and outer sides of the gusset plate.

[0005] Furthermore, the adjusting assembly includes a self-locking cylinder, a main through hole, a first side through hole and a second side through hole. Multiple self-locking cylinders are evenly assembled on the outer wall of the ventilation pipe underground in a coal mine. The output shaft of the self-locking cylinder is fixedly installed with an end plate, and the end plate is fixedly installed on the outer wall of the plug. A base is provided at the end of the main body of the self-locking cylinder, and the base is fixedly installed on the outer wall of the ventilation pipe underground in a coal mine. Multiple main through holes are opened at the front end of the inner wall of the plug, multiple first side through holes are opened on the outer wall of the plug, and multiple second side through holes are opened at intervals on the front side of the outer wall of the ventilation pipe underground in a coal mine.

[0006] Furthermore, a column is fixedly installed on the front side of the inner wall of the underground ventilation pipe of the coal mine, a pointed plate is fixedly installed on the front side of the column, and pointed tips are evenly fixedly installed on the surface of the pointed plate.

[0007] Furthermore, the main through hole is a tapered hole that is narrow in the front and wide in the back, and the shape of the tip corresponds to the main through hole, and the tip corresponds to the main through hole one by one.

[0008] Furthermore, the plurality of main through holes are distributed in a multi-circular pattern, and the diameter of the main through holes located on the outside is larger than the diameter of the main through holes located on the inside.

[0009] Furthermore, the power assembly includes a servo motor, a toothed pulley and a toothed belt, the servo motor is fixedly mounted on the gusset plate, one of the toothed pulleys is fixedly mounted on the output end of the servo motor, a bracket is fixedly mounted on the inner wall of the gusset plate, and the other toothed pulley is rotatably assembled on the bracket through a bearing, the inner walls on both sides of the toothed belt are respectively engaged with the two toothed pulleys, and the toothed belt passes through the gusset plate, and a fan is fixedly mounted on the outer end of the toothed pulley located inside the ventilation pipe underground in the coal mine.

[0010] Furthermore, the fan includes a rotor and blades, the rotor is fixedly mounted on the outer end of the toothed pulley, a plurality of blades are evenly assembled on the outer wall of the rotor, and the diameter of the fan is larger than the diameter of the pointed plate.

[0011] The beneficial effects of using the present invention are:

[0012] The present invention is designed with main through holes and side through holes to achieve air extraction from multiple angles, solving the problem of poor gas flowability on the other side of the pipeline caused by single-sided air extraction, and can effectively improve the gas suction efficiency.

[0013] The present invention is designed with a pointed plate that cooperates with the main through hole. When the pointed plate is separated from the plug, the air extraction work can be completed through the main through hole. When the main through hole needs to be cleaned of impurities, the plug is driven to move by the self-locking cylinder, and the pointed plate is inserted into the main through hole, so that the impurities in the main through hole can be pushed out and cleaned, thereby reducing the blockage frequency and extending the life of the device.

[0014] During the cleaning process of the present invention, the side through hole can still be used for exhaustion, and the cleaning work can be completed without shutting down the equipment, thereby ensuring the continuous operation of the equipment, continuously discharging gas, and avoiding excessive gas concentration.

[0015] The various structures in the present invention adopt a modular design, so that the toothed belt or fan blades can be repaired without the need for overall shutdown. At the same time, the PLC control of the self-locking cylinder ensures accurate movement of the plug, reducing the cost of manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of removing the plug;

[0018] Figure 3 For the present invention Figure 2 One of the partial cross-sectional structural diagrams;

[0019] Figure 4 For the present invention Figure 2 The second schematic diagram of the partial cross-sectional structure;

[0020] Figure 5 For the present invention Figure 1 Schematic diagram of the right view structure;

[0021] Figure 6 For the present invention Figure 3 A local enlarged view of point I in the middle.

[0022] The accompanying drawings include: 1. Coal mine underground ventilation pipe, 2. Plug, 3. Adjustment assembly, 301. Self-locking cylinder, 302. End plate, 303. Main through hole, 304. First side through hole, 305. Base, 306. Second side through hole, 4. Power assembly, 401. Servo motor, 402. Toothed pulley, 403. Toothed belt, 404. Bracket, 5. Buckle plate, 6. Fan blade, 7. Column, 8. Pointed plate. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Reference Figures 1 to 6 A gas ventilation device for the upper corner of an underground coal mine comprises an underground coal mine ventilation pipe 1 and a plug 2. The front end of the underground coal mine ventilation pipe 1 is equipped with the plug 2. The outer wall of the underground coal mine ventilation pipe 1 is equipped with an adjustment component 3, and the plug 2 is assembled at the output end of the adjustment component 3. The side wall of the underground coal mine ventilation pipe 1 is fixed with a gusset plate 5 by bolts, and a power component 4 is arranged on the inner and outer sides of the gusset plate 5.

[0026] The ventilation pipe 1 in the underground coal mine is the main channel for gas extraction.

[0027] A sealing gasket is provided on the inner wall of the rear end of the plug 2 to ensure the seal between the plug 2 and the ventilation pipe 1 in the coal mine, and to ensure the relative sealing of the plug 2 during the movement.

[0028] The regulating component 3 is used to dynamically switch the air intake mode and realize the cleaning work without stopping the machine. A processor and a wireless signal transceiver can be set inside or outside the ventilation pipe 1 in the coal mine to realize remote control of the regulating component 3.

[0029] The power assembly 4 is used to provide stable air extraction power.

[0030] Specifically, if Figures 1 to 3 As shown, the adjustment component 3 includes a self-locking cylinder 301, a main through hole 303, a first side through hole 304 and a second side through hole 306. A plurality of self-locking cylinders 301 are evenly assembled on the outer wall of the ventilation pipe 1 in the coal mine. The output shaft of the self-locking cylinder 301 is fixedly installed with an end plate 302, and the end plate 302 is fixedly installed on the outer wall of the plug 2. A base 305 is provided at the end of the main body of the self-locking cylinder 301, and the base 305 is fixedly installed on the outer wall of the ventilation pipe 1 in the coal mine. A plurality of main through holes 303 are opened at the front end of the inner wall of the plug 2, a plurality of first side through holes 304 are opened on the outer wall of the plug 2, and a plurality of second side through holes 306 are opened at intervals on the front side of the outer wall of the ventilation pipe 1 in the coal mine.

[0031] The main through hole 303 is a conventional air inlet channel.

[0032] The first side through hole 304 and the second side through hole 306 serve as lateral air inlet channels.

[0033] The first side through holes 304 are arranged in a circular pattern with equal intervals, forming a total of one circle. The second side through holes 306 are arranged in a circular pattern with equal intervals, forming a total of two circles. The first side through holes 304 and the second side through holes 306 located in the same plane correspond to each other one by one.

[0034] Specifically, if Figure 2 and Figure 3 As shown, a column 7 is fixedly installed on the front side of the inner wall of the ventilation pipe 1 in the coal mine, a pointed plate 8 is fixedly installed on the front side of the column 7, and the surface of the pointed plate 8 is evenly fixed with pointed tips.

[0035] When the tip is inserted into the main through hole 303 , the first side through hole 304 and the second side through hole 306 on the rear side are located in the same plane. At this time, air extraction can be performed through the first side through hole 304 and the second side through hole 306 .

[0036] Specifically, if Figure 1 and Figure 2 As shown, the main through hole 303 is a tapered hole that is narrow in the front and wide in the back, and the shape of the tip corresponds to the main through hole 303 , and the tip corresponds to the main through hole 303 one by one.

[0037] The conical hole has a small outer diameter and can block impurities. Such a design can enhance the efficiency of pushing out impurities and improve the cleaning effect.

[0038] Specifically, if Figure 1 and Figure 2 As shown, the plurality of main through holes 303 are distributed in a multi-circular ring shape, and the diameter of the main through holes 303 located on the outside is larger than the diameter of the main through holes 303 located on the inside.

[0039] The design of the diameter of the main through hole 303 allows the ventilation volume of the main through hole 303 on the outside to be larger, so that most of the inhaled gas can easily bypass the pointed plate 8 to complete the extraction work, thereby improving the extraction efficiency.

[0040] Specifically, if Figures 3 to 5 As shown, the power assembly 4 includes a servo motor 401, a toothed pulley 402 and a toothed belt 403. The servo motor 401 is fixedly mounted on the gusset plate 5. A toothed pulley 402 is fixedly mounted on the output end of the servo motor 401. A bracket 404 is fixedly mounted on the inner wall of the gusset plate 5. Another toothed pulley 402 is rotatably assembled on the bracket 404 through a bearing. The inner walls on both sides of the toothed belt 403 are respectively engaged with the two toothed pulleys 402, and the toothed belt 403 passes through the gusset plate 5. A fan is fixedly mounted on the outer end of the toothed pulley 402 inside the ventilation pipe 1 in the coal mine.

[0041] The operation of the servo motor 401 drives the fan to rotate through the transmission of two toothed pulleys 402 and a toothed belt 403, thereby providing suction power.

[0042] Specifically, if Figure 6 As shown, the fan includes a rotor and blades 6. The rotor is fixedly mounted on the outer end of the toothed pulley 402. A plurality of blades 6 are evenly assembled on the outer wall of the rotor. The diameter of the fan is larger than the diameter of the pointed plate 8.

[0043] The overall diameter of the fan is set so that the outer diameter of the vent hole 303 is larger, so that the gas can be extracted more effectively.

[0044] Example 2

[0045] Conventional ventilation mode of the upper corner gas ventilation device in this coal mine:

[0046] First, the underground ventilation pipe 1 of the coal mine is installed at the upper corner of the coal mine to be ventilated. Specifically, the underground ventilation pipe 1 of the coal mine can be fixed to the underground wall by welding or pipe bracket. Then, the servo motor 401 is controlled to start. The output end of the servo motor 401 can drive the fan blade 6 to rotate through the transmission of the toothed belt 403 and the toothed pulley 402, so that an outward airflow is generated inside the underground ventilation pipe 1 of the coal mine, generating suction to draw out the air in the upper corner to avoid gas accumulation here. At the same time, when the airflow passes through the main through hole 303, larger impurities can be blocked.

[0047] Since a dust removal structure will be set up underground, under normal circumstances, it is only necessary to block larger impurities. The dust removal structure will perform dust removal and dust reduction work in the mine.

[0048] Example 3

[0049] The non-stop impurity cleaning mode of the upper corner gas ventilation device in the coal mine:

[0050] When a lot of impurities are accumulated outside the plug 2 and affect the air intake efficiency, the user can directly or remotely control the multiple self-locking cylinders 301, so that the output end of the self-locking cylinder 301 drives the plug 2 to pull backward through the end plate 302, and drives the plug 2 to move backward for a distance, so that the first side through-hole 304 is aligned with the second side through-hole 306 on the rear side. At the same time, the plug 2 moves backward so that the tip of the tip plate 8 can be inserted into the interior of the main through-hole 303, and the impurities stuck in the main through-hole 303 are squeezed out through the tip and the impurities attached to the surface of the main through-hole 303 are pushed out. At the same time, the main through-hole 30 3 is blocked. At this time, the first side through hole 304 is connected with the second side through hole 306 on the rear side, replacing the original air intake process of the main through hole 303. At this time, the user can clean the impurities accumulated on the surface of the main through hole 303 without stopping the machine. After the cleaning is completed, the self-locking cylinder 301 can be controlled again to move the plug 2 forward, so that the first side through hole 304 moves forward to the center position of the second side through hole 306 of the two layers, so that the main through hole 303 and the second side through hole 306 are staggered, and the air intake work at the main through hole 303 is restored, that is, the cleaning work without stopping the machine is completed.

[0051] Example 4

[0052] The enhanced ventilation mode of the upper corner gas ventilation device in this coal mine:

[0053] During use, the user can control the self-locking cylinder 301 as needed, so that the output shaft of the self-locking cylinder 301 drives the plug 2 to move forward (multiple self-locking cylinders 301 can be connected to a PLC controller to control their synchronous start and stop process), so that the first side through hole 304 is aligned with the second side through hole 306 on the front side, so that the main through hole 303 and the first side through hole 304 are synchronously intake air, thereby not only extracting the gas space on the front side of the pipeline, but also inhaling gas into the space on the outer wall of the pipeline, effectively avoiding the problem that only using a single-sided extraction method easily causes the gas flowability on the other side of the pipeline to deteriorate and affect the overall ventilation effect, and also effectively avoids local gas accumulation.

[0054] Example 5

[0055] Maintenance process of the upper corner gas ventilation device in this coal mine:

[0056] 1. Fan blade maintenance

[0057] The user can regularly control the self-locking cylinder 301 to drive the plug 2 to move forward to the extreme position, so that the plug 2 is separated from the end of the coal mine underground ventilation pipe 1, and the dust on the surface of the fan blade 6 is cleaned through the gap between the plug 2 and the coal mine underground ventilation pipe 1.

[0058] 2. Maintenance of Power Components 4

[0059] When the toothed belt 403 and the toothed pulley 402 need to be repaired, the bolts in the center of the fan can be loosened, the fan can be removed, and then the bolts at the four corners of the gusset plate 5 can be loosened, and the gusset plate 5 together with the bracket 404 can be taken out for inspection. If the toothed belt 403 becomes loose, it can be replaced with a new one. After the inspection is completed, the gusset plate 5 can be fastened back and the bolts can be tightened.

[0060] The four outer walls of the gusset plate 5 are processed into a conical surface that is narrow inside and wide outside, and a sealing gasket is installed on the fitting surface with the notch of the coal mine underground ventilation pipe 1 to maintain sealing. Among them, the gap between the toothed belt 403 and the gusset plate 5 is extremely small, and most of the pumped airflow will still be discharged to the external space along the pipeline. The airflow leaking from the gap here is tiny and can be ignored.

[0061] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, many changes can be made in the specific implementation method and application scope. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of the present invention.

Claims

1. A gas ventilation device for upper corners in underground coal mines, characterized by: The invention comprises a coal mine underground ventilation pipe (1) and a plug (2), wherein the front end of the coal mine underground ventilation pipe (1) is equipped with the plug (2), the outer wall of the coal mine underground ventilation pipe (1) is equipped with an adjustment component (3), and the plug (2) is assembled at the output end of the adjustment component (3), and the side wall of the coal mine underground ventilation pipe (1) is fixed with a gusset plate (5) by bolts, and the inner and outer sides of the gusset plate (5) are provided with a power component (4).

2. The upper corner gas ventilation device for an underground coal mine according to claim 1, characterized in that: The regulating assembly (3) comprises a self-locking cylinder (301), a main through hole (303), a first side through hole (304) and a second side through hole (306); a plurality of the self-locking cylinders (301) are evenly assembled on the outer wall of the ventilation pipe (1) in a coal mine; an output shaft of the self-locking cylinder (301) is fixedly mounted with an end plate (302), and the end plate (302) is fixedly mounted on the outer wall of the plug (2); a base (305) is provided at the end of the main body of the self-locking cylinder (301), and the base (305) is fixedly mounted on the outer wall of the ventilation pipe (1) in a coal mine; a plurality of the main through holes (303) are opened at the front end of the inner wall of the plug (2); a plurality of the first side through holes (304) are opened at the outer wall of the plug (2); and a plurality of the second side through holes (306) are opened at intervals on the front side of the outer wall of the ventilation pipe (1) in a coal mine.

3. The upper corner gas ventilation device for an underground coal mine according to claim 2, characterized in that: A column (7) is fixedly mounted on the front side of the inner wall of the coal mine underground ventilation pipe (1), a pointed plate (8) is fixedly mounted on the front side of the column (7), and pointed tips are evenly fixedly mounted on the surface of the pointed plate (8).

4. The upper corner gas ventilation device for an underground coal mine according to claim 3, characterized in that: The main through hole (303) is a tapered hole that is narrow in front and wide in the back, and the shape of the tip corresponds to the main through hole (303), and the tip corresponds to the main through hole (303) one by one.

5. The upper corner gas ventilation device for an underground coal mine according to claim 4, characterized in that: The plurality of main through holes (303) are distributed in a multi-circular annular pattern, and the diameter of the main through holes (303) located on the outside is larger than the diameter of the main through holes (303) located on the inside.

6. The upper corner gas ventilation device for an underground coal mine according to claim 2, characterized in that: The power assembly (4) includes a servo motor (401), a toothed belt pulley (402) and a toothed belt (403). The servo motor (401) is fixedly mounted on a gusset plate (5). One of the toothed belt pulleys (402) is fixedly mounted on the output end of the servo motor (401). A bracket (404) is fixedly mounted on the inner wall of the gusset plate (5). The other toothed belt pulley (402) is rotatably assembled on the bracket (404) through a bearing. The inner walls of both sides of the toothed belt (403) are respectively engaged with the two toothed belt pulleys (402), and the toothed belt (403) passes through the gusset plate (5). A fan is fixedly mounted on the outer end of the toothed belt pulley (402) located inside the ventilation pipe (1) of the coal mine.

7. The upper corner gas ventilation device for an underground coal mine according to claim 3, characterized in that: The fan comprises a rotating body and blades (6), wherein the rotating body is fixedly mounted on the outer end of the toothed pulley (402), and a plurality of blades (6) are evenly assembled on the outer wall of the rotating body, and the diameter of the fan is larger than the diameter of the pointed plate (8).

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