Gas detector in coal mine laneway

Abstract

The utility model discloses a coal mine laneway gas detector which comprises a detector body and a control cabinet, a gas detector is arranged in the detector body, a gas inlet pipe and an exhaust pipe are respectively arranged on the detector body, the gas inlet pipe is communicated with a gas inlet of the gas detector, and the exhaust pipe is communicated with a gas outlet of the gas detector. The dust collector is characterized in that a dust filtering plate is fixedly arranged on the inner wall of the air inlet end of the air inlet pipe, a bearing fixedly penetrates through the center of the dust filtering plate, a motor frame is fixedly arranged in the air outlet end of the air inlet pipe, a motor is arranged on the motor frame, an output shaft of the motor is coaxial with a center shaft of the bearing, and the output shaft of the motor is coaxially connected with a mounting shaft rotationally penetrating through the bearing; a strip-shaped cleaning device for cleaning dust on the surface of the dust filtering plate is arranged on the mounting shaft, and an air inlet blade is arranged on an output shaft of the motor. According to the gas detector in the coal mine laneway, dust attached to the surface of the dust filtering plate can be automatically cleaned while gas is detected, and the situation that the gas inlet effect is affected due to dust accumulation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas detection, in particular to a gas detector in a coal mine shaft. Background Art

[0002] Gas in coal mines refers to a mixture of methane, carbon dioxide and nitrogen that escapes from coal and surrounding rocks. Gas is a harmful factor in coal mine production. It not only pollutes the air, but also causes explosions and accidents when the gas content in the air is 5% to 16%. In order to ensure the personal safety of underground workers and the smooth progress of mining work, gas detectors are usually installed in the shaft to continuously or periodically detect the gas concentration in the current area, and remind workers when the concentration is high to avoid casualties.

[0003] The gas detector in the prior art detects the gas concentration by drawing air in the current area into the detector, and then determines the gas content in the current area. When drawing air, a filter plate is set at the air inlet to reduce dust and other impurities entering the detector, which can play a certain filtering role. However, the amount of dust in the mine is very large. After the gas detector has been working for a period of time, a lot of dust will accumulate on the filter plate, affecting the air intake efficiency. If the dust is not cleaned for a long time, the filter plate will be blocked, which will affect the detection accuracy. Utility Model Content

[0004] In view of this, the utility model proposes a gas detector in a coal mine tunnel. When the gas detector detects gas, the dust attached to the surface of the filter plate can be automatically cleaned.

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

[0006] A gas detector in a coal mine shaft comprises a detector body and a control cabinet arranged on the detector body, wherein a gas detector is arranged in the detector body, and an air inlet pipe and an exhaust pipe are respectively arranged on the detector body, wherein the air inlet pipe is connected with the air inlet of the gas detector, and the exhaust pipe is connected with the air outlet of the gas detector, a dust filter plate is fixedly arranged on the inner wall at the air inlet end of the air inlet pipe, a bearing is fixedly penetrated through the center of the dust filter plate, a motor frame is fixedly arranged in the exhaust end of the air inlet pipe, a motor is mounted on the motor frame, an output shaft of the motor is coaxial with the central axis of the bearing, a mounting shaft rotatably penetrated through the bearing is coaxially connected to the output shaft of the motor, a strip-shaped cleaning device for cleaning dust on the surface of the dust filter plate is mounted on the mounting shaft, and an air inlet blade is mounted on the output shaft of the motor.

[0007] In order to better implement the above technical solution, optionally, the strip-shaped cleaning device is located on the side of the dust filter plate facing the air inlet end of the air inlet pipe.

[0008] Optionally, the strip cleaning device includes a cleaning brush, an adjusting spring and an adjusting nut; the cleaning brush includes a strip plate body, a through hole for movably passing a mounting shaft is opened in the center of the strip plate body, a mounting ring is fixedly provided on the surface of the strip plate body facing the dust filter plate and around the through hole, bristle structures are respectively provided on both sides of the surface of the strip plate body facing the dust filter plate, the mounting ring is fixedly sleeved on the mounting shaft, an adjusting nut is installed on the end of the mounting shaft away from the motor output shaft, and the adjusting spring is sleeved on the mounting shaft and is located between the mounting ring and the bearing.

[0009] Optionally, the two bristle structures respectively include a connecting plate and elastic bristles, wherein the side of the connecting plate facing away from the dust filter plate is fixed on the strip plate body, and the side of the connecting plate facing the dust filter plate is fixed with elastic bristles, and the elastic bristles abut against the surface of the dust filter plate.

[0010] Optionally, the dust filter plate is a planar structure.

[0011] Optionally, a filter membrane is provided on the surface of the dust filter plate facing away from the bristle structure.

[0012] Optionally, one end of each mesh hole of the dust filter plate facing the bristle structure is a conical structure.

[0013] Optionally, the output shaft of the motor is connected to the mounting shaft via a coupling.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a gas detector in a coal mine shaft and lane. A motor drives a motor output shaft and a mounting shaft to rotate simultaneously. The motor output shaft drives an air intake blade to rotate, so that air outside an air intake pipe enters the gas detector through the air intake pipe. The air detected by the gas detector is discharged through an exhaust pipe. When the motor drives the mounting shaft to rotate, the mounting shaft drives elastic bristles to rotate around the center of the strip plate body through a mounting ring, a strip plate body and a connecting plate, so that the elastic bristles continuously clean impurities on the surface of a dust filter plate, thereby keeping the surface of the dust filter plate clean. The gas detector in a coal mine shaft and lane can automatically clean dust attached to the surface of the dust filter plate while detecting gas, so as to avoid dust accumulation affecting the air intake effect or clogging the dust filter plate. The gas detector does not need to be manually cleaned on the dust filter plate in a short time, thereby reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a gas detector in a coal mine tunnel according to an embodiment of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the middle air intake pipe;

[0018] Figure 3 yes Figure 2 Schematic diagram of the middle A direction;

[0019] Reference numerals:

[0020] Detector body 10, air intake pipe 20, exhaust pipe 30, dust filter plate 40, bearing 401, filter membrane 402, motor frame 41, motor 42, air intake blade 421, mounting shaft 43, coupling 431, strip plate 441, mounting ring 442, connecting plate 443, elastic bristles 444, adjustment spring 451, and adjustment nut 452. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.

[0022] See also Figures 1 to 3 The utility model embodiment discloses a gas detector in a coal mine shaft, including a detector body 10 and a control cabinet. The control cabinet is arranged on the surface of the detector body 10. The control cabinet has a signal transmission device and an independent alarm system. A gas detector (not shown in the figure) is arranged in the detector body 10. It should be noted that the structures of the detector body 10 and the control cabinet are both well-known technologies and will not be repeated in this embodiment.

[0023] like Figure 1 As shown, an air inlet pipe 20 and an exhaust pipe 30 are respectively provided on the detector body 10. The air inlet pipe 20 is connected to the air inlet of the gas detector, and the exhaust pipe 30 is connected to the air outlet of the gas detector. A one-way valve is provided in the exhaust pipe 30. The function of the one-way valve is that the exhaust pipe 30 can only exhaust air to the outside but not take in air.

[0024] like Figure 2 and Figure 3 As shown, a dust filter plate 40 is fixedly provided on the inner wall at the air inlet end of the air inlet pipe 20, and the dust filter plate 40 is used to filter the air input to the gas detector through the air inlet pipe 20. The dust filter plate 40 is a hard plate body, and a bearing 401 is fixedly penetrated in the center of the dust filter plate 40. A motor frame 41 is fixedly provided in the exhaust end of the air inlet pipe 20, and a ventilation channel is formed in the center of the motor frame 41. A motor 42 is mounted on the motor frame 41, and the output shaft of the motor 42 is coaxial with the central axis of the bearing 401. The output shaft of the motor 42 is coaxially connected to a mounting shaft 43 that rotatably penetrates the bearing 401 through a coupling 431, and a strip cleaning device for cleaning dust on the surface of the dust filter plate 40 is mounted on the mounting shaft 43, and an air intake blade 421 is mounted on the output shaft of the motor 42, and the motor 42 drives the air intake blade 421 and the strip cleaning device to rotate simultaneously.

[0025] In an embodiment of the utility model, the strip-shaped cleaning device is located on the side of the dust filter plate 40 facing the air inlet end of the air inlet pipe 20. When the impurities cleaned by the strip-shaped cleaning device are lighter, the lighter impurities adhere to the cleaning body of the strip-shaped cleaning device. When the impurities accumulate to a certain amount, they fall naturally due to gravity, while the heavier impurities fall directly.

[0026] like Figure 2 and Figure 3 As shown, the strip cleaning device includes a cleaning brush, an adjustment spring 451 and an adjustment nut 452; the cleaning brush includes a strip plate body 441, a through hole for movably passing the mounting shaft 43 is opened in the center of the strip plate body 441, the through hole and the mounting shaft 43 are clearance-matched, the strip plate body 441 faces the surface of the dust filter plate 40 and a mounting ring 442 is fixedly arranged around the through hole, the mounting ring 442 is fixedly sleeved on the mounting shaft 43, and bristle structures are respectively arranged on both sides of the surface of the strip plate body 441 facing the dust filter plate 40, and the two bristle structures respectively include a connecting plate 443 and elastic bristles 444, and the side of the connecting plate 443 facing away from the dust filter plate 40 is fixedly arranged on the strip plate body 44 1, elastic bristles 444 are fixedly provided on one side of the connecting plate 443 facing the dust filter plate 40, and the elastic bristles 444 are in contact with the surface of the dust filter plate 40. The mounting shaft 43 rotates through the mounting ring 442 to drive the strip plate body 441 to rotate. Since the dust filter plate 40 is fixed in the air inlet pipe 20, and the elastic bristles 444 are fixed on the strip plate body 441, when the mounting shaft 43 rotates, the elastic bristles 444 are driven to continuously clean the dust on the surface of the dust filter plate. Since one end of each mesh of the dust filter plate 40 facing the brush structure is a conical structure, the elastic bristles 444 continuously sweep out the impurities in each mesh of the dust filter plate 40, so that each mesh of the dust filter plate 40 remains unobstructed.

[0027] In an embodiment of the utility model, the dust filter plate 40 is a planar structure. In other optional embodiments, the dust filter plate 40 may also be a circular concave or convex structure. A filter membrane 402 is attached to the surface of the dust filter plate 40 away from the bristle structure. The aperture of the ventilation hole of the filter membrane 402 is smaller than the aperture of the mesh of the dust filter plate 40, thereby further improving the filtering effect and reducing the dust from entering the detector body 10.

[0028] like Figure 2 and Figure 3 As shown, an adjusting nut 452 is installed at the end of the mounting shaft 43 away from the output shaft of the motor 42. Specifically, the end of the mounting shaft 43 away from the output shaft of the motor 42 has an external thread, and the adjusting nut 452 can be rotatably set on the mounting shaft 43. The adjusting spring 451 is sleeved on the mounting shaft 43 and is located between the mounting ring 442 and the bearing. By adjusting the position of the adjusting nut 452 on the mounting shaft 43, the compression degree of the adjusting spring 451 can be changed, so that the end of the bristle can still contact the surface of the dust filter plate 40 to clean dust after wear.

[0029] The utility model embodiment of a gas detector in a coal mine shaft and tunnel, a motor 42 drives the motor output shaft and the installation shaft 43 to rotate simultaneously, the motor 42 output shaft drives the air intake blade 421 to rotate, so that the air outside the intake pipe 20 enters the gas detector through the intake pipe 20, and the air detected by the gas detector is discharged through the exhaust pipe 30. When the motor 42 drives the installation shaft 43 to rotate, the installation shaft 43 drives the elastic bristles 444 to rotate around the center of the strip plate 441 through the installation ring 442, the strip plate 441 and the connecting plate 443, so that the elastic bristles 444 continuously clean the impurities on the surface of the dust filter plate 40, thereby keeping the surface of the dust filter plate 40 clean. The gas detector in the coal mine shaft and tunnel can automatically clean the dust attached to the surface of the dust filter plate 40 while detecting gas, so as to avoid dust accumulation affecting the air intake effect or clogging the dust filter plate 40. The gas detector does not need to be manually cleaned in a short time to clean the dust filter plate 40, thereby reducing the maintenance frequency.

[0030] The technical solution of the utility model is described in detail above in combination with specific embodiments, and the described specific embodiments are used to help understand the concept of the utility model. Derivations and variations made by those skilled in the art based on the specific embodiments of the utility model also fall within the protection scope of the utility model.

Claims

1. A gas detector in a coal mine tunnel, comprising a detector body (10) and a control cabinet arranged on the detector body (10), wherein a gas detector is arranged in the detector body (10), and an air inlet pipe (20) and an exhaust pipe (30) are respectively arranged on the detector body (10), wherein the air inlet pipe (20) is communicated with an air inlet of the gas detector, and the exhaust pipe (30) is communicated with an air outlet of the gas detector, and wherein: A dust filter plate (40) is fixedly provided on the inner wall at the air inlet end of the air inlet pipe (20), a bearing (401) is fixedly penetrated in the center of the dust filter plate (40), a motor frame (41) is fixedly provided in the exhaust end of the air inlet pipe (20), a motor (42) is mounted on the motor frame (41), an output shaft of the motor (42) is coaxial with the central axis of the bearing (401), a mounting shaft (43) rotatably penetrated by the bearing (401) is coaxially connected to the output shaft of the motor (42), a strip-shaped cleaning device for cleaning dust on the surface of the dust filter plate (40) is mounted on the mounting shaft (43), and an air inlet blade (421) is mounted on the output shaft of the motor (42).

2. A gas detector in a coal mine tunnel according to claim 1, characterized in that: The strip-shaped cleaning device is located on a side of the dust filter plate (40) facing the air inlet end of the air inlet pipe (20).

3. A gas detector in a coal mine tunnel according to claim 2, characterized in that: The strip cleaning device comprises a cleaning brush, an adjusting spring (451) and an adjusting nut (452); The cleaning brush comprises a strip plate body (441), a through hole for movably inserting a mounting shaft (43) is opened at the center of the strip plate body (441), a mounting ring (442) is fixedly arranged on the surface of the strip plate body (441) facing the dust filter plate (40) and around the through hole, bristle structures are respectively arranged on both sides of the surface of the strip plate body (441) facing the dust filter plate (40), the mounting ring (442) is fixedly sleeved on the mounting shaft (43), an adjusting nut (452) is installed on the end of the mounting shaft (43) away from the output shaft of the motor (42), and the adjusting spring (451) is sleeved on the mounting shaft (43) and is located between the mounting ring (442) and the bearing (401).

4. A coal mine gas detector according to claim 3, characterized in that: The two bristle structures respectively include a connecting plate (443) and elastic bristles (444); the side of the connecting plate (443) facing away from the dust filter plate (40) is fixed on the strip plate (441); the side of the connecting plate (443) facing the dust filter plate (40) is fixed with elastic bristles (444); the elastic bristles (444) are in contact with the surface of the dust filter plate (40).

5. A coal mine gas detector according to claim 1, characterized in that: The dust filter plate (40) is a planar structure.

6. A gas detector in a coal mine tunnel according to claim 1, characterized in that: A filter membrane (402) is provided on the surface of the dust filter plate (40) facing away from the bristle structure.

7. A gas detector in a coal mine tunnel according to claim 1, characterized in that: Each mesh of the dust filter plate (40) has a conical structure at one end facing the bristle structure.

8. A gas detector in a coal mine tunnel according to claim 1, characterized in that: The output shaft of the motor (42) is connected to the mounting shaft (43) via a coupling (431).

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