Coal mine working face ventilation safety monitoring device

Abstract

The utility model discloses a coal mine working face ventilation safety monitoring device which comprises a main pipeline, an air inlet and an air outlet are formed in the front and the back of the main pipeline respectively, a waste collecting pipe is connected to the bottom of the middle of the main pipeline, a main dust filtering plate is obliquely connected to the middle in the main pipeline, and the inclined face of the main dust filtering plate is guided to the waste collecting pipe. A sealing door is connected to the bottom of the waste collecting pipe, a pre-air sensor is connected to the top of the side, close to the air inlet, in the main pipeline, a precise air sensor is connected to the top of the side, close to the air outlet, in the main pipeline, and an auxiliary dust filtering plate is connected to the interior of the air outlet; and the precise air sensor is arranged between the main dust filter plate and the auxiliary dust filter plate. Compared with the prior art, the device has the advantages that the filter plate and the dust collecting pipe are arranged in the main pipeline, so that dust can be regularly cleaned in a concentrated manner, and meanwhile, the air quality in a coal mine can be accurately monitored front and back through the front air sensor and the rear air sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine work auxiliary equipment, in particular to a ventilation safety monitoring device for a coal mine working face. Background Art

[0002] A coal mine is an area where humans exploit coal resources in coal-rich mining areas. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal. This is an underground coal mine.

[0003] In underground coal mines, it is often necessary to set up ventilation monitoring equipment, mainly to reduce internal dust particles and monitor harmful gases in the internal space. However, ventilation equipment in the prior art is mostly simple exhaust fans and sensor monitoring. However, existing monitors need to be cleaned frequently in high dust conditions to ensure the accuracy of the sensors, and directly extracting dust outwards can easily cause dust in the external environment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a ventilation safety monitoring device for a coal mine working face in view of the deficiencies in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides a technical solution: a ventilation safety monitoring device for a coal mine working face, comprising a main pipeline, wherein an air inlet and an air outlet are respectively arranged at the front and rear of the main pipeline, a waste collecting pipe is connected to the middle bottom of the main pipeline, a main dust filter plate is obliquely connected to the middle of the main pipeline, the inclined surface of the main dust filter plate is guided to the waste collecting pipe, and a sealing door is connected to the bottom of the waste collecting pipe;

[0006] A pre-air sensor is connected to the top of the main duct near the air inlet, a precision air sensor is connected to the top of the main duct near the air outlet, an auxiliary dust filter plate is connected inside the air outlet, and the precision air sensor is arranged between the main dust filter plate and the auxiliary dust filter plate.

[0007] Furthermore, the air inlet is internally connected to an air supply fan to facilitate air supply operations.

[0008] Furthermore, an equipment box is connected to the top of the main pipeline, a controller is connected inside the equipment box, and a sealed maintenance door is connected to one side of the equipment box to facilitate the control of electrical components in the equipment.

[0009] Furthermore, an air extraction pump is connected inside the equipment box, and the air extraction pump is connected with an air extraction pipe extending to the outside and an air outlet pipe extending into the main pipeline. The air outlet pipe extends into the main pipeline and is connected with an air distribution ring pipe aimed at the pre-air sensor, and the air distribution ring pipe is connected with a nozzle aimed at the pre-air sensor, so as to facilitate regular cleaning of the pre-air sensor.

[0010] Furthermore, a motor is connected to one side of the main pipeline, a rotating shaft extending to the rear side of the main dust filter plate is connected to the power end of the motor, and a vibrating cam is connected to the rotating shaft to facilitate the vibration operation of the main dust filter plate.

[0011] The advantages of the coal mine working face ventilation safety monitoring device of the utility model compared with the prior art are: the device can perform regular cleaning of centralized dust by arranging filter plates and dust collecting pipes inside the main pipeline, and can accurately monitor the air quality in the coal mine through front and rear air sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first structural schematic diagram of a ventilation safety monitoring device for a coal mine working face of the utility model.

[0013] Figure 2 This is a second structural schematic diagram of a ventilation safety monitoring device for a coal mine working face of the utility model.

[0014] Figure 3 The utility model is a cross-sectional structural schematic diagram of a ventilation safety monitoring device for a coal mine working face.

[0015] As shown in the figure: 1. Main duct; 2. Air inlet; 3. Air outlet; 4. Air supply fan; 5. Waste collection pipe; 6. Sealed door; 7. Equipment box; 8. Main dust filter plate; 9. Pre-air sensor; 10. Precision air sensor; 11. Auxiliary dust filter plate; 12. Suction pump; 13. Suction pipe; 14. Exhaust pipe; 15. Air distribution ring pipe; 16. Injection head; 17. Motor; 18. Rotating shaft; 19. Vibration cam; 20. Controller; 21. Sealed maintenance door. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] Combined with Figure 1-3A ventilation safety monitoring device for a coal mine working face comprises a main pipeline 1, wherein the main pipeline 1 is provided with an air inlet 2 and an air outlet 3 at the front and rear, respectively, and an air supply fan 4 is connected inside the air inlet 2. Generally, the main pipeline 1 is connected with other ventilation pipelines, that is, the ventilation equipment in the coal mine is connected with the present device, and the air supply fan 4 can be used for supplementary exhaust operation. A waste collecting pipe 5 is connected to the bottom of the middle of the main pipeline 1, and a main dust filter plate 8 is connected obliquely in the middle of the main pipeline 1. The inclined surface of the main dust filter plate 8 is directed to the waste collecting pipe 5, and the bottom of the waste collecting pipe 5 A sealing door 6 is connected, that is, the drawn-in gas is filtered through the main dust filter plate 8, and the filtered dust particles will fall into the waste collecting pipe 5 for collection, so that the sealing door 6 can be opened and cleaned regularly. A motor 17 is connected to one side of the main pipeline 1, and the power end of the motor 17 is connected to a rotating shaft 18 extending to the rear side of the main dust filter plate 8. A vibrating cam 19 is connected to the rotating shaft 18. When the motor 17 drives the rotating shaft 18 to rotate, the main dust filter plate 8 can be hit by the vibrating cam 19, and the dust particles attached to the main dust filter plate 8 can be knocked down.

[0018] Combined with Figure 3 A pre-air sensor 9 is connected to the top of the main duct 1 near the air inlet 2, a precision air sensor 10 is connected to the top of the main duct 1 near the air outlet 3, and an auxiliary dust filter plate 11 is connected inside the air outlet 3. The precision air sensor 10 is arranged between the main dust filter plate 8 and the auxiliary dust filter plate 11, that is, pre-sensing can be performed through the pre-air sensor 9, so as to roughly monitor the air quality, and then the filtered gas can be passed through the precision air sensor 10 to accurately monitor the gas quality, thereby ensuring the accurate stability of the monitored gas quality.

[0019] Combined with Figure 3 An equipment box 7 is connected to the top of the main pipeline 1, a controller 20 is connected to the equipment box 7, a sealed maintenance door 21 is connected to one side of the equipment box 7, an air pump 12 is connected to the equipment box 7, the air pump 12 is connected to an air extraction pipe 13 extending to the outside and an air outlet pipe 14 extending into the main pipeline 1, the air outlet pipe 14 extends into the main pipeline 1 and is connected to an air distribution ring pipe 15 aimed at the pre-air sensor 9, the air distribution ring pipe 15 is connected to a nozzle 16 aimed at the pre-air sensor 9, the pre-air sensor 9 that is always exposed to a high dust environment will adhere to too much dust, which will affect the quality of the pre-air sensor 9, the air can be extracted by regularly starting the air pump 12, and the pre-air sensor 9 can be quickly cleaned by jetting in conjunction with the air distribution ring pipe 15 and the nozzle 16.

[0020] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A ventilation safety monitoring device for a coal mine working face, comprising a main pipeline (1), wherein the main pipeline (1) is provided with an air inlet (2) and an air outlet (3) at the front and rear, respectively, and characterized in that: The middle bottom of the main pipeline (1) is connected with a waste collecting pipe (5), the middle part of the main pipeline (1) is connected with a main dust filter plate (8) at an angle, the inclined surface of the main dust filter plate (8) is directed to the waste collecting pipe (5), and the bottom of the waste collecting pipe (5) is connected with a sealing door (6); A pre-air sensor (9) is connected to the top of the main duct (1) near the air inlet (2), a precision air sensor (10) is connected to the top of the main duct (1) near the air outlet (3), an auxiliary dust filter plate (11) is connected inside the air outlet (3), and the precision air sensor (10) is arranged between the main dust filter plate (8) and the auxiliary dust filter plate (11).

2. A coal mine working face ventilation safety monitoring device according to claim 1, characterized in that: The air inlet (2) is internally connected to an air supply fan (4).

3. A coal mine working face ventilation safety monitoring device according to claim 1, characterized in that: The top of the main pipeline (1) is connected to an equipment box (7), a controller (20) is connected inside the equipment box (7), and a sealed maintenance door (21) is connected to one side of the equipment box (7).

4. A coal mine working face ventilation safety monitoring device according to claim 3, characterized in that: The equipment box (7) is connected to an air extraction pump (12), the air extraction pump (12) is connected to an air extraction pipe (13) extending to the outside and an air outlet pipe (14) extending into the main pipeline (1), the air outlet pipe (14) extends into the main pipeline (1) and is connected to an air distribution ring pipe (15) aligned with the pre-air sensor (9), and the air distribution ring pipe (15) is connected to an injection head (16) aligned with the pre-air sensor (9).

5. A coal mine working face ventilation safety monitoring device according to claim 1, characterized in that: A motor (17) is connected to one side of the main pipeline (1), a power end of the motor (17) is connected to a rotating shaft (18) extending to the rear side of the main dust filter plate (8), and a vibrating cam (19) is connected to the rotating shaft (18).

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