A mine underground upper corner gas ventilation device

Abstract

This invention discloses a gas ventilation device for the upper corner of an underground coal mine, comprising an underground ventilation pipe and a plug. The plug is installed at the front end of the underground ventilation pipe, and an adjustment component is installed on the outer wall of the underground ventilation pipe, with the plug installed at the output end of the adjustment component. A buckle plate is fixedly installed on the side wall of the underground ventilation pipe by bolts, and a power component is set on the inner and outer sides of the buckle plate. This invention designs a main through hole and a side through hole, realizing gas extraction from multiple angles, solving the problem of poor gas flow on the other side of the pipe caused by single-sided gas extraction, and effectively improving gas intake efficiency. A pointed plate is also designed. When the pointed plate is separated from the plug, gas extraction can be completed through the main through hole. When it is necessary to clean impurities from the main through hole, the plug is moved by a self-locking cylinder, allowing the pointed tip to be inserted into the main through hole, thus completing the removal and cleaning of impurities from the main through hole, reducing the frequency of clogging and extending the life of the device.

Description

Technical Field

[0001] This invention belongs to the field of underground ventilation technology in coal mines, and specifically provides a gas ventilation device for the upper corner of an underground coal mine. Background Technology

[0002] Ventilation is poor and temperature and humidity are high in the upper corner of underground coal mines, making it easy for gas released from the goaf and the working face to accumulate, resulting in high gas concentration in this area. Therefore, gas ventilation devices for the upper corner of underground coal mines are needed for continuous ventilation. For example, a gas ventilation device for the upper corner of underground coal mines with application number CN202420073701.7 can enhance gas emission efficiency. However, when the filter structure at the air intake needs to be thoroughly cleaned, the equipment still needs to be shut down, which means ventilation cannot be carried out at this time. In addition, using only one-sided air extraction can easily cause the gas flow on the other side of the pipeline to deteriorate, thus affecting the overall ventilation effect. Current ventilation devices generally lack dynamic adjustment capabilities, cannot handle impurities and blockages during operation, and fail to optimize gas intake in multiple areas, which limits the continuity of safe operation in underground coal mines. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a gas ventilation device for the upper corner of a coal mine. This device requires shutdown when the filter structure at the air inlet needs thorough cleaning, which prevents it from functioning properly during ventilation. Furthermore, the invention addresses the issue that using only one-sided air extraction can lead to poor gas flow on the other side of the duct, thus affecting the overall ventilation effect.

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

[0005] Furthermore, the adjustment 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 underground ventilation pipe in the coal mine. An end plate is fixedly installed on the output shaft of each self-locking cylinder, 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 each self-locking cylinder, and the base is fixedly installed on the outer wall of the underground ventilation pipe in the 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 spaced apart on the front side of the outer wall of the underground ventilation pipe in the coal mine.

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

[0007] Furthermore, the main through hole is a tapered hole that is narrow at the front and wide at the back, and the shape of the tip corresponds to the main through hole, with each tip corresponding to a main through hole.

[0008] Furthermore, the multiple main through holes are arranged in a multi-ring annular pattern, with the diameter of the main through holes located on the outer side being larger than the diameter of the main through holes located on the inner side.

[0009] Furthermore, the power assembly includes a servo motor, a toothed pulley, and a toothed belt. The servo motor is fixedly mounted on the buckle 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 buckle plate, and the other toothed pulley is rotatably mounted on the bracket via a bearing. The inner walls on both sides of the toothed belt mesh with the two toothed pulleys respectively, and the toothed belt passes through the buckle plate. A fan is fixedly mounted on the outer end of the toothed pulley located inside the ventilation pipe in the coal mine.

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

[0011] The beneficial effects of using this invention are:

[0012] This invention features a main through-hole and a side through-hole, enabling air extraction from multiple angles. This solves the problem of poor gas flow on the other side of the pipe caused by single-sided air extraction, and effectively improves gas intake efficiency.

[0013] This invention features a pointed plate designed to work with the main through hole. When the pointed plate is separated from the plug, air can be pumped out through the main through hole. When it is necessary to clean impurities from the main through hole, a self-locking cylinder moves the plug, allowing the pointed tip to be inserted into the main through hole, thus cleaning and removing impurities from the main through hole, reducing the frequency of clogging and extending the life of the device.

[0014] During the cleaning process, the side through-hole can still be used for air extraction, and the cleaning work can be completed without stopping the equipment, ensuring the continuous operation of the equipment and continuously discharging gas to avoid exceeding the gas concentration standard.

[0015] The modular design of each structure in this invention allows for maintenance of toothed belts or fan blades without requiring a complete shutdown. Meanwhile, the PLC control of the self-locking cylinder ensures precise movement of the plug, reducing the cost of manual intervention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 For the present invention Figure 1 A three-dimensional structural diagram of the structure with the plug removed.

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

[0019] Figure 4 For the present invention Figure 2 Partial sectional structural schematic diagram (2);

[0020] Figure 5 For the present invention Figure 1 A schematic diagram of the right-side view structure;

[0021] Figure 6 For the present invention Figure 3 A magnified view of a section at point I.

[0022] The reference numerals in the attached drawings include: 1. Coal mine underground ventilation pipe, 2. Plug, 3. Adjustment component, 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 component, 401. Servo motor, 402. Toothed pulley, 403. Toothed belt, 404. Bracket, 5. Buckle plate, 6. Fan blade, 7. Column, 8. Pointed plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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 includes an underground ventilation pipe 1 and a plug 2. The plug 2 is installed at the front end of the underground ventilation pipe 1. An adjustment component 3 is installed on the outer wall of the underground ventilation pipe 1, and the plug 2 is installed at the output end of the adjustment component 3. A buckle plate 5 is fixedly installed on the side wall of the underground ventilation pipe 1 by bolts. A power component 4 is provided on the inner and outer sides of the buckle plate 5.

[0026] The underground ventilation pipe 1 in the 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 underground ventilation pipe 1 of the coal mine, and to ensure the relative seal of the plug 2 during the movement process.

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

[0029] Power assembly 4 is used to provide stable pumping power.

[0030] Specifically, such as 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. Multiple self-locking cylinders 301 are evenly assembled on the outer wall of the underground ventilation pipe 1 in the coal mine. The 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. The main body end of the self-locking cylinder 301 is provided with a base 305, and the base 305 is fixedly mounted on the outer wall of the underground ventilation pipe 1 in the coal mine. Multiple main through holes 303 are opened at the front end of the inner wall of the plug 2, multiple first side through holes 304 are opened on the outer wall of the plug 2, and multiple second side through holes 306 are opened at intervals on the front side of the outer wall of the underground 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 are lateral air intake channels.

[0033] The first side through hole 304 is arranged in a ring with equal spacing, and there is a total of one ring. The second side through hole 306 is arranged in a ring with equal spacing, and there are a total of two rings. The first side through hole 304 and the second side through hole 306 located on the same plane correspond one-to-one.

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

[0035] When the tip is inserted into the main through hole 303, the first side through hole 304 and the rear side through hole 306 are on 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, such as Figure 1 and Figure 2 As shown, the main through hole 303 is a tapered hole that is narrow at the front and wide at the back, and the shape of the tip corresponds to the main through hole 303, and the tip corresponds one-to-one with the main through hole 303.

[0037] The tapered hole, with its smaller outer diameter, can block impurities and enhances the efficiency of impurity removal, thus improving the cleaning effect.

[0038] Specifically, such as Figure 1 and Figure 2 As shown, multiple main through holes 303 are distributed in multiple rings, with the diameter of the main through hole 303 on the outer side being larger than the diameter of the main through hole 303 on the inner side.

[0039] The design of the diameter of the main through hole 303 allows for a larger ventilation volume in the main through hole 303 located on the outside, thereby enabling most of the gas drawn in to easily bypass the pointed plate 8 and complete the extraction work, thus improving the extraction efficiency.

[0040] Specifically, such as 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 buckle plate 5. One 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 buckle plate 5. Another toothed pulley 402 is rotatably mounted on the bracket 404 through a bearing. The inner walls on both sides of the toothed belt 403 mesh with the two toothed pulleys 402 respectively, and the toothed belt 403 passes through the buckle plate 5. A fan is fixedly mounted on the outer end of the toothed pulley 402 located inside the underground ventilation pipe 1 of the coal mine.

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

[0042] Specifically, such as Figure 6 As shown, the fan includes a rotating body and fan blades 6. The rotating body is fixedly installed on the outer end of the toothed pulley 402. Multiple fan blades 6 are evenly assembled on the outer wall of the rotating body. The diameter of the fan is larger than the diameter of the pointed plate 8.

[0043] The overall diameter of the fan is set to be larger, which, combined with the larger diameter of the outer side of the vent 303, allows for more effective gas extraction.

[0044] Example 2

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

[0046] First, the underground ventilation pipe 1 is installed at the upper corner of the corresponding underground coal mine to be ventilated. Specifically, the underground ventilation pipe 1 can be fixed to the underground wall by welding or pipe brackets. Then, the servo motor 401 is started. The output end of the servo motor 401 can drive the fan blade 6 to rotate through the toothed belt 403 and toothed pulley 402, so that the underground ventilation pipe 1 generates an outward airflow and produces suction to draw out the air at the upper corner, preventing gas accumulation in this area. 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 is installed underground, under normal circumstances, it is only necessary to block larger impurities. The dust removal structure will carry out dust removal and reduction work in the mine.

[0048] Example 3

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

[0050] When a large amount of impurities accumulate outside the plug 2, affecting the air intake efficiency, the user can directly or remotely control multiple self-locking cylinders 301. The output end of the self-locking cylinder 301, through the end plate 302, pulls the plug 2 backward, causing it to move backward a certain distance. This aligns the first side through hole 304 with the rear second side through hole 306. Simultaneously, the backward movement of the plug 2 allows the pointed tip of the pointed plate 8 to insert into the main through hole 303. The pointed tip squeezes out the impurities stuck inside the main through hole 303 and pushes out the impurities adhering to the surface of the main through hole 303, thus opening the main through hole 303. 3. Blocking: At this time, the first side through hole 304 is connected to 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 cleaning, 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 two layers of the second side through hole 306, so that the main through hole 303 and the second side through hole 306 are misaligned, and the air intake work at the main through hole 303 is restored, thus completing the cleaning work without stopping the machine.

[0051] Example 4

[0052] Enhanced ventilation mode of the gas ventilation device in the upper corner of 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 front second side through hole 306, so that the main through hole 303 and the first side through hole 304 can simultaneously intake air. In this way, not only can the gas space on the front of the pipeline be extracted, but also the space on the outer wall of the pipeline can be sucked in. This effectively avoids the problem that the gas flow on the other side of the pipeline is easily reduced and affects the overall ventilation effect when only one side is used for air extraction, and also effectively avoids local gas accumulation.

[0054] Example 5

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

[0056] I. Fan Blade Maintenance

[0057] Users can periodically control the self-locking cylinder 301 to move the plug 2 forward to its limit position, so that the plug 2 is disengaged from the end of the underground ventilation pipe 1 in the coal mine, and the dust on the surface of the fan blade 6 can be cleaned through the gap between the plug 2 and the underground ventilation pipe 1 in the coal mine.

[0058] II. Overhaul of Power Component 4

[0059] When the toothed belt 403 and toothed pulley 402 need maintenance, loosen the bolt in the center of the fan, remove the fan, loosen the bolts at the four corners of the buckle plate 5, remove the buckle plate 5 along with the bracket 404 for maintenance. If the toothed belt 403 is loose, it can be replaced with a new one. After maintenance, fasten the buckle plate 5 back and tighten the bolts.

[0060] The outer walls of the four sides of the buckle plate 5 are processed into a tapered surface that is narrower on the inside and wider on the outside. A sealing gasket is installed on the mating surface with the gap of the ventilation pipe 1 in the coal mine to keep it sealed. The gap between the toothed belt 403 and the buckle plate 5 is extremely small. Most of the airflow will still be discharged to the external space through the pipe. The airflow leaking out of this gap is tiny and can be ignored.

[0061] The above content is only a preferred embodiment of the present invention. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the concept of the present invention. As long as these changes do not depart from the concept of the present invention, they all fall within the protection scope of the present invention.

Claims

1. A gas ventilation device for the upper corner of an underground coal mine, characterized in that: The coal mine underground ventilation pipe (1) and plug (2) are included. The front end of the coal mine underground ventilation pipe (1) is equipped with plug (2). The outer wall of the coal mine underground ventilation pipe (1) is equipped with adjustment component (3), and plug (2) is installed at the output end of adjustment component (3). The side wall of the coal mine underground ventilation pipe (1) is fixedly installed with buckle plate (5) by bolts. The inner and outer sides of buckle plate (5) are provided with power component (4). 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). Multiple self-locking cylinders (301) are evenly assembled on the outer wall of the underground ventilation pipe (1) of the coal mine. The 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). The main body end of the self-locking cylinder (301) is provided with a base (305), and the base (305) is fixedly mounted on the outer wall of the underground ventilation pipe (1) of the coal mine. Multiple main through holes (303) are opened at the front end of the plug (2). Multiple first side through holes (304) are opened on the outer wall of the plug (2). Multiple second side through holes (306) are opened at intervals on the front side of the outer wall of the underground ventilation pipe (1) of the coal mine. A column (7) is fixedly installed on the front side of the inner wall of the underground ventilation pipe (1) in the coal mine. A pointed plate (8) is fixedly installed on the front side of the column (7), and pointed tips are evenly fixedly installed on the surface of the pointed plate (8). The main through hole (303) is a tapered hole that is narrow at the front and wide at the back, and the shape of the tip corresponds to the main through hole (303), and the tip corresponds one-to-one with the main through hole (303); The multiple main through holes (303) are arranged in a multi-ring annular distribution, and the diameter of the main through hole (303) located on the outer side is larger than the diameter of the main through hole (303) located on the inner side; 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 buckle plate (5). One of the toothed 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 buckle plate (5). The other toothed pulley (402) is rotatably mounted on the bracket (404) through a bearing. The inner walls on both sides of the toothed belt (403) mesh with the two toothed pulleys (402) respectively, and the toothed belt (403) passes through the buckle plate (5). A fan is fixedly mounted on the outer end of the toothed pulley (402) located inside the ventilation pipe (1) in the coal mine.

2. The gas ventilation device for the upper corner of an underground coal mine as described in claim 1, characterized in that: The fan includes a rotating body and fan blades (6). The rotating body is fixedly installed on the outer end of the toothed pulley (402). Multiple fan blades (6) are evenly assembled on the outer wall of the rotating body. The diameter of the fan is larger than the diameter of the pointed plate (8).

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