Mining laser methane gas detector

Abstract

The utility model belongs to the technical field of gas detectors, and discloses a mining laser methane gas detector which comprises a shell, fan blades and an electrostatic adsorption plate, the electrostatic adsorption plate is located on one side of the fan blades and is close to the fan blades when being erected, the bottom end of the electrostatic adsorption plate is connected with an installation shaft, and the installation shaft is connected with the shell. One end of the mounting shaft is connected with the inner wall of the shell through a bearing, the other end of the mounting shaft penetrates through the shell, the mounting shaft can move in the shell, a fixing rod is mounted on the outer wall of the shell, a limiting assembly is arranged between the mounting shaft and the fixing rod, a plurality of arc-shaped grooves are formed in the side walls of the fan blades, and the fan blades are arranged in the arc-shaped grooves. According to the utility model, the electrostatic adsorption plates, the hydrophobic and oleophobic coatings, the arc-shaped grooves and the like are arranged, so that dust and impurities on the fan blades are regularly and automatically removed, the smooth flow of gas is ensured, and the high-precision measurement capability of the detector is always kept.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gas detector, concretely relates to a mine laser methane gas detector. BACKGROUND

[0002] The laser methane gas detector is a device for detecting the concentration of methane (CH4) gas in the environment by using laser technology. It is used to monitor the leakage and concentration change of methane gas to ensure safe production and environmental protection. Its working principle is as follows: the laser emits a specific wavelength of laser light, which matches the absorption spectrum of methane gas. When the laser passes through the environment containing methane gas, the methane molecules will absorb part of the laser energy, resulting in a decrease in laser intensity.

[0003] A mine laser methane gas detector is disclosed in the patent with application number 202323003182.1. The mine laser methane gas detector includes a shell, a fan blade assembly, an electromagnetic shield cage, and a laser. The shell forms a containing cavity with an air inlet and an air outlet. By setting the electromagnetic shield cage in the shell, the electromagnetic shield cage communicates with the air inlet and the air outlet and forms an air chamber inside. The laser is installed in the air chamber. In this way, the electromagnetic radiation in the mining area can be weakened and shielded by the electromagnetic shield cage, thereby improving the detection accuracy of the gas detector. In the above content, the fan blade assembly will have problems such as wear and tear and dust accumulation during long-term use. Dust and impurities adhere to the surface of the fan blade, increasing the surface roughness of the fan blade, thereby increasing the air resistance and reducing the gas flow efficiency. The reduction of gas flow efficiency will cause the detector to fail to accurately collect gas samples, thereby affecting the measurement accuracy of methane concentration. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a mine laser methane gas detector to solve the problems of wear and tear, dust accumulation, and dust and impurities adhering to the surface of the fan blade during long-term use of the fan blade assembly, which increases the surface roughness of the fan blade and increases the air resistance and reduces the gas flow efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a mine laser methane gas detector, comprising:

[0006] The shell is provided with an air inlet and an air outlet at both ends, and a detachable dust screen is installed on the air inlet and the air outlet. The shell forms a containing cavity with an air inlet and an air outlet;

[0007] The fan blade is located in the shell, and the driving assembly is connected to the fan blade;

[0008] The electrostatic adsorption plate is located at one side of the fan blade, and is close to the fan blade when erected, the bottom end of the electrostatic adsorption plate is connected with a mounting shaft, one end of the mounting shaft is connected with the inner wall of the shell through a bearing, the other end of the mounting shaft passes through the shell, and the mounting shaft is movable in the shell, a fixed rod is installed on the outer wall of the shell, and a limiting assembly is arranged between the mounting shaft and the fixed rod.

[0009] The detection assembly is installed in the interior of the shell.

[0010] Preferably, the driving assembly comprises a driving motor and a speed reducer, the driving motor is installed in the interior of the shell, the speed reducer is connected on the output shaft of the driving motor, and the fan blade is connected with the output end of the speed reducer.

[0011] Preferably, the limiting assembly comprises a fixed cylinder, a hollow cylinder and a first spring, the fixed cylinder is connected at one end of the mounting shaft located outside the shell, the hollow cylinder is sleeved outside the fixed cylinder, and the first spring is connected between the fixed cylinder and the hollow cylinder.

[0012] Preferably, a plurality of arc-shaped grooves are formed in the side wall of the fan blade, and a hydrophobic and oleophobic coating material is arranged on the outer wall of the fan blade.

[0013] Through the above technical scheme:

[0014] In use, the driving motor is started, the driving motor drives the fan blades to rotate through the speed reducer to make the air accelerate to flow into the air chamber, in order to realize the adjustment of the rotating speed of the fan blades, the speed reducer can convert the high speed and low torque of the driving motor into the low speed and high torque required by the fan blades, thereby providing sufficient power to drive the fan blades, the hydrophobic and oleophobic coating material on the surface wall of the fan blades can adopt Teflon coating, so that dust and impurities are not easy to adhere to the surface of the fan blades, and the side wall of the fan blade is provided with an arc-shaped groove, the arc-shaped groove conforms to the direction of the airflow, thereby increasing the airflow scouring effect, so that dust and impurities are more easily carried away by the airflow, when the equipment is stopped, the mounting shaft is twisted, the hollow cylinder is pressed, the total length of the hollow cylinder and the fixed cylinder is shortened, until the electrostatic adsorption plate stands close to the fan blade, the hollow cylinder passes around the fixed rod, at this time the hollow cylinder is loosened, the first spring is driven by the elastic force to make the hollow cylinder not easy to stretch and contract under the action of the non-specific direction, the fixed rod can block the hollow cylinder, thereby avoiding the rotation of the electrostatic adsorption plate under the action of gravity, ensuring that the electrostatic adsorption plate is stable on one side of the fan blade, using the principle of electrostatic adsorption, the dust and impurities on the fan blades are adsorbed onto the electrostatic adsorption plate, which can be cleaned regularly in the later period, regular automatic removal of dust and impurities can keep the surface of the fan blades clean, ensure smooth gas flow, maintain the normal working state of the detector, and ensure that the detector always maintains high-precision measurement capability; when the equipment needs to be used, the hollow cylinder is pressed, the mounting shaft is twisted in the opposite direction, the electrostatic adsorption plate is lowered, and the normal work of the fan blades is not affected.

[0015] The air inlet end and the air outlet end of the shell are provided with mounting grooves, the dust screen is located in the mounting grooves, and the second spring is arranged between the mounting grooves and the dust screen.

[0016] Through the above technical solutions:

[0017] In use, the dust screen is pushed into the mounting groove, and then the limiting rod is rotated to act on the outer wall of the dust screen to block the dust screen and prevent the dust screen from falling off without reason, when the dust screen is disassembled, the limiting rod is rotated to not block the dust screen, and the second spring drives the dust screen by elastic force to make the dust screen protrude out of the mounting groove, so that the dust screen is convenient to disassemble, the easily disassembled dust screen facilitates regular cleaning of dust and impurities on the dust screen and the internal electrostatic adsorption plate, effectively prevents dust and impurities from accumulating in the shell, keeps the inside of the shell clean, simplifies the cleaning and maintenance process of the easily disassembled dust screen, improves the reliability, safety and service life of the equipment, reduces the maintenance cost and downtime, and provides better use experience and economic benefits for users.

[0018] Preferably, the detection component includes a metal mesh, a main control board, an air chamber, and a laser. The metal mesh is installed inside the housing, the air chamber is located inside the metal mesh, the laser is installed inside the air chamber, and the main control board is connected to the laser.

[0019] Specifically, there are multiple metal meshes that form an electromagnetic shielding cage. This cage effectively blocks strong radiation from the mine, protecting the detection instruments from radiation and extending their lifespan. The main control board can also activate a laser to detect methane gas in the gas chamber.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] (1) This utility model automatically removes dust and impurities from the fan blades periodically by setting up an electrostatic adsorption plate, a hydrophobic and oleophobic coating, and an arc groove. When in use, the mounting shaft is twisted and the hollow cylinder is pressed. The fixing rod blocks the hollow cylinder to ensure that the electrostatic adsorption plate is stable on one side of the fan blade. Using the principle of electrostatic adsorption, the dust and impurities on the fan blades are adsorbed onto the electrostatic adsorption plate. The hydrophobic and oleophobic coating material on the surface of the fan blades makes it difficult for dust and impurities to adhere to the surface of the fan blades. The arc groove increases the airflow scouring effect. Regularly and automatically removing dust and impurities can keep the surface of the fan blades clean, ensure smooth gas flow, and ensure that the detector always maintains high-precision measurement capabilities.

[0022] (2) By setting a limiting rod and a second spring, the dustproof net is easy to disassemble. When in use, the limiting rod is removed and the second spring pushes the dustproof net out of the installation groove to disassemble the dustproof net, which facilitates regular cleaning of the dustproof net and the dust and debris on the internal electrostatic adsorption plate, effectively preventing dust and impurities from accumulating inside the shell and keeping the inside of the shell clean. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the fan blade of this utility model;

[0025] Figure 3 This is an appearance drawing of the present utility model;

[0026] Figure 4 This is a schematic diagram of the installation structure of the hollow cylinder of this utility model;

[0027] Figure 5 This is a schematic diagram of the mounting groove of this utility model;

[0028] Figure 6 for Figure 2 Enlarged view of part A in the image;

[0029] Figure 7 is Figure 4 an enlarged view of part B in FIG. 1;

[0030] Figure 8 is Figure 5 an enlarged view of part C in FIG. 1;

[0031] In the figure: 1, shell; 2, air inlet; 3, air outlet; 4, drive motor; 5, speed reducer; 6, fan blade; 7, electrostatic adsorption plate; 8, mounting shaft; 9, fixed rod; 10, fixed cylinder; 11, hollow cylinder; 12, first spring; 13, arc-shaped groove; 14, mounting groove; 15, dust screen; 16, second spring; 17, limiting rod; 18, metal screen; 19, main control board; 20, air chamber; 21, laser. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Please refer to Figures 1-7 The utility model provides the following technical scheme: a mine laser methane gas detector, comprising:

[0034] Shell 1, both ends of shell 1 are respectively equipped with air inlet 2 and air outlet 3, and the air inlet 2 and the air outlet 3 are both installed with detachable dust screen 15, and the shell 1 forms a containing cavity with the air inlet 2 and the air outlet 3 inside;

[0035] Fan blade 6, the fan blade 6 is located in the shell 1, and the fan blade 6 is connected with a drive assembly;

[0036] Electrostatic adsorption plate 7, the electrostatic adsorption plate 7 is located at one side of the fan blade 6, and the electrostatic adsorption plate 7 is close to the fan blade 6 when standing, and the bottom end of the electrostatic adsorption plate 7 is connected with the mounting shaft 8, one end of the mounting shaft 8 is connected with the inner wall of the shell 1 through a bearing, the other end of the mounting shaft 8 passes through the shell 1, and the mounting shaft 8 is movable in the shell 1, and the outer wall of the shell 1 is installed with the fixed rod 9, and a limiting assembly is arranged between the mounting shaft 8 and the fixed rod 9;

[0037] Detection assembly, the detection assembly is installed in the inside of the shell 1.

[0038] Further, the drive assembly includes a drive motor 4 and a speed reducer 5, the drive motor 4 is installed in the inside of the shell 1, the speed reducer 5 is connected on the output shaft of the drive motor 4, and the fan blade 6 is connected with the output end of the speed reducer 5;

[0039] The limiting assembly comprises a fixed cylinder 10, a hollow cylinder 11 and a first spring 12, the fixed cylinder 10 is connected to one end of the mounting shaft 8 outside the shell 1, the hollow cylinder 11 is sleeved outside the fixed cylinder 10, and the first spring 12 is connected between the fixed cylinder 10 and the hollow cylinder 11;

[0040] The side wall of the fan blade 6 is provided with a plurality of arc-shaped grooves 13, and the outer wall of the fan blade 6 is provided with a hydrophobic and oleophobic coating material;

[0041] Through the above technical scheme:

[0042] In use, the driving motor 4 is started, the driving motor 4 drives the fan blade 6 to rotate through the speed reducer 5, so that the air is accelerated to flow into the air chamber 20, in order to adjust the rotating speed of the fan blade 6, the speed reducer 5 can convert the high speed and low torque of the driving motor 4 into the low speed and high torque required by the fan blade 6, so as to provide sufficient power to drive the fan blade 6, the hydrophobic and oleophobic coating material on the surface wall of the fan blade 6 can adopt Teflon coating, so that dust and impurities are not easy to adhere to the surface of the fan blade 6, and the side wall of the fan blade 6 is provided with arc-shaped grooves 13, which conform to the direction of air flow, thereby increasing the air flow flushing effect, so that dust and impurities are more easily carried away by the air flow, when the equipment is stopped, the mounting shaft 8 is twisted, the hollow cylinder 11 is pressed, the total length of the hollow cylinder 11 and the fixed cylinder 10 is shortened, until the electrostatic adsorption plate 7 stands close to the fan blade 6, the hollow cylinder 11 passes around the fixed rod 9, at this time the hollow cylinder 11 is loosened, the first spring 12 is pressed by the elastic force of the first spring 12, so that the hollow cylinder 11 is not easy to stretch and contract under the action of the non-specific direction, the fixed rod 9 can block the hollow cylinder 11, thereby avoiding the rotation of the electrostatic adsorption plate 7 under the action of gravity, ensuring that the electrostatic adsorption plate 7 is stable on one side of the fan blade 6, using the principle of electrostatic adsorption, the dust and impurities on the fan blade 6 are adsorbed onto the electrostatic adsorption plate 7, which can be cleaned regularly in the later period, regular automatic removal of dust and impurities can keep the surface of the fan blade 6 clean, ensure smooth gas flow, maintain the normal working state of the detector, and ensure that the detector always maintains high-precision measurement capability; when the equipment needs to be used, press the hollow cylinder 11, twist the mounting shaft 8 in the opposite direction, so that the electrostatic adsorption plate 7 is lowered, and the normal work of the fan blade 6 is not affected.

[0043] Please refer to Figure 1 、 Figures 3-5 and Figure 8 , the air inlet end and the air outlet end of the shell 1 are provided with mounting grooves 14, the dust screen 15 is located in the mounting groove 14, and the second spring 16 is arranged between the mounting groove 14 and the dust screen 15, one end of the second spring 16 is connected with the mounting groove 14, the outer wall of the air inlet end and the air outlet end of the shell 1 is movably connected with a limiting rod 17, and the limiting rod 17 can act on the dust screen 15;

[0044] Through the above technical scheme:

[0045] In use, the dust screen 15 is pushed into the mounting groove 14, and then the limiting rod 17 is rotated to act on the outer wall of the dust screen 15, so that the dust screen 15 is blocked, and the dust screen 15 is prevented from falling off. When the dust screen 15 is disassembled, the limiting rod 17 is rotated, the limiting rod 17 does not block the dust screen 15, and the second spring 16 pushes the dust screen 15 by elastic force, so that the dust screen 15 pops out of the mounting groove 14, facilitating disassembly of the dust screen 15. The easily disassembled dust screen 15 facilitates regular cleaning of dust and sundries on the dust screen 15 and the internal electrostatic adsorption plate 7, effectively prevents dust and sundries from accumulating in the housing 1, maintains the cleanliness of the housing 1, and simplifies the cleaning and maintenance process of the easily disassembled dust screen 15, improves the reliability, safety and service life of the equipment, reduces the maintenance cost and downtime, and provides better use experience and economic benefits for users.

[0046] Further, the detection assembly includes a metal mesh 18, a main control board 19, an air chamber 20 and a laser 21. The metal mesh 18 is installed in the housing 1, the air chamber 20 is located in the metal mesh 18, the laser 21 is installed in the air chamber 20, and the main control board 19 is connected with the laser 21.

[0047] Specifically, the metal mesh 18 is provided in plurality, and the plurality of metal meshes 18 form an electromagnetic shielding cage. The electromagnetic shielding cage can effectively block strong radiation under the mine, protect the detection instrument from radiation, thereby prolonging the service life of the detection instrument, and the main control board 19 can start the laser 21. The laser 21 detects the methane gas in the air chamber 20.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mine-use laser methane gas detector, characterized in that, include: The housing (1) has an air inlet (2) and an air outlet (3) at its two ends respectively, and each of the air inlet (2) and the air outlet (3) is equipped with an easily removable dustproof net (15). Fan blade (6), the fan blade (6) is located inside the housing (1), and a drive assembly is connected to the fan blade (6); An electrostatic adsorption plate (7) is located on one side of the fan blade (6), and when the electrostatic adsorption plate (7) is upright, it is close to the fan blade (6). The bottom end of the electrostatic adsorption plate (7) is connected to an installation shaft (8). One end of the installation shaft (8) is connected to the inner wall of the housing (1) through a bearing. The other end of the installation shaft (8) passes through the housing (1), and the installation shaft (8) can move inside the housing (1). A fixing rod (9) is installed on the outer wall of the housing (1), and a limiting component is provided between the installation shaft (8) and the fixing rod (9). A detection component is installed inside the housing (1).

2. The mine-use laser methane gas detector according to claim 1, characterized in that: The drive assembly includes a drive motor (4) and a reducer (5). The drive motor (4) is installed inside the housing (1). The reducer (5) is connected to the output shaft of the drive motor (4), and the fan blade (6) is connected to the output end of the reducer (5).

3. The mine-use laser methane gas detector according to claim 1, characterized in that: The limiting assembly includes a fixed cylinder (10), a hollow cylinder (11), and a first spring (12). The fixed cylinder (10) is connected to one end of the mounting shaft (8) located outside the housing (1). The hollow cylinder (11) is sleeved on the outside of the fixed cylinder (10), and the first spring (12) is connected between the fixed cylinder (10) and the hollow cylinder (11).

4. The mine-use laser methane gas detector according to claim 1, characterized in that: The sidewall of the fan blade (6) is provided with multiple arc-shaped grooves (13), and the outer wall of the fan blade (6) is provided with a hydrophobic and oleophobic coating material.

5. A mining laser methane gas detector according to claim 1, characterized in that: The housing (1) has mounting grooves (14) on both the air inlet and air outlet. The dustproof net (15) is located in the mounting groove (14), and a second spring (16) is provided between the mounting groove (14) and the dustproof net (15). One end of the second spring (16) is connected to the mounting groove (14). The outer walls of the air inlet and air outlet of the housing (1) are movably connected to limit rods (17), and the limit rods (17) can act on the dustproof net (15).

6. A mining laser methane gas detector according to claim 1, characterized in that: The detection assembly includes a metal mesh (18), a main control board (19), an air chamber (20), and a laser (21). The metal mesh (18) is installed inside the housing (1), the air chamber (20) is located inside the metal mesh (18), the laser (21) is installed inside the air chamber (20), and the main control board (19) is connected to the laser (21).

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