Mine return air corner gas monitoring device
By designing a gas monitoring device for the return air corner of the mine, the rotation of the inclined blades and vertical poles removes accumulated water and dust, the problem of bundle tube blockage is solved, and the smooth collection and monitoring of gas is achieved.
Patent Information
- Application Number
- CN202421408524.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The bundle tubes at the corners of the mine’s return air are easily blocked by accumulated water and dust, resulting in poor gas collection and affecting the gas monitoring effect.
A mine return air corner gas monitoring device is designed, including the main body, bundle tube, separation assembly and filtration system. The rotational action of the inclined blades and vertical poles is used to remove accumulated water and dust, and is initially filtered through the spiral tube and filter mesh to ensure that the gas enters the main body smoothly for testing.
Effectively removes accumulated water and dust, ensures normal monitoring of gas, avoids blockage of the bundle tube, and ensures smooth gas collection.
Smart Images
Figure CN223229295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mine gas detection, in particular to a mine return air corner gas monitoring device. Background Art
[0002] During coal mining operations, it's necessary to monitor gas composition and temperature in key fire risk areas, such as the working face and return air corners. Early detection and early warning of coal spontaneous combustion are fundamental to coal mine fire prevention and control, and crucial for firefighting. Timely and accurate monitoring of mine gas levels allows for effective preventive measures against spontaneous coal combustion fires, preventing underground accidents.
[0003] In related technologies, a bundled tube gas sampling device is commonly used to detect gases exiting the return air corners of mines. This device integrates system control, gas sampling, and detection and analysis. The main unit of the bundled tube gas sampling device is equipped with a gas flow meter, oxygen sensor, methane sensor, and other detection devices, which can detect the concentrations of gases such as oxygen, carbon monoxide, and methane in the extracted gas. Bundle-tube gas sampling devices are generally ground-mounted, with the main unit deployed near a monitoring point, such as the working face. The bundled tube is laid from the monitoring point to the gas collection area underground. The bundled tube extracts gas from the collection area and transports it to the main unit for sampling and analysis.
[0004] Regarding the above-mentioned related technologies, during the coal mining and excavation process, groundwater in the gaps in the surrounding rock of the ore body is likely to exist in the return air corners of the tunnel. During the collection process of the bundle pipe located underground, the bundle pipe is likely to inhale accumulated water and dust, which in turn causes the bundle pipe to become blocked, making it impossible to collect the gas smoothly, and causing adverse effects on the monitoring of the return air corner gas. Utility Model Content
[0005] In order to smoothly collect gas from the return air corner and ensure normal gas monitoring, the present application provides a mine return air corner gas monitoring device.
[0006] This application provides a mine return air corner gas monitoring device, which adopts the following technical solution:
[0007] A mine return air corner gas monitoring device includes a main body, the main body is connected to a bundle pipe, the end of the bundle pipe facing away from the main body is set as an air intake pipe, the bundle pipe is provided with a separation component, the separation component includes a box, a gas cylinder, a vertical pole and several groups of mutually parallel inclined blades, the gas cylinder is fixed in the box and has an opening at the upper end, the vertical pole is located in the gas cylinder and is rotatably connected to the box, each group of inclined blades is fixedly connected to the vertical pole, the air intake pipe passes through the box and the gas cylinder in sequence, the air intake pipe corresponds to the lowest inclined blade, the upper end of the box is connected to the bundle pipe, and a one-way valve is provided at the connection between the bundle pipe, the air intake pipe and the box.
[0008] Optionally, the air intake pipe is movably connected to a hollow spiral tube, and a first filter is provided at one end of the spiral tube close to the air intake pipe.
[0009] Optionally, the end of the spiral tube facing away from the air inlet pipe is movably connected to a filter head, the filter head is in the shape of a hollow frustum, and a second filter screen is provided at the end of the filter head close to the air inlet pipe.
[0010] Optionally, the upper end of the vertical pole passes through the air delivery cylinder and is fixedly connected to a plurality of rotating blades, and a cooling cavity is opened on the inner wall of the box body, and a cooling pipe is provided in the cooling cavity.
[0011] Optionally, the upper end of the box body is movably connected to a sealing cover plate, and the lower end surface of the sealing cover plate is fixedly connected to an adsorption plate corresponding to the rotating blade.
[0012] Optionally, two inclined guide plates are fixedly provided in the box body, and the guide plates are symmetrically arranged along the gas cylinder.
[0013] Optionally, the box body is provided with a plurality of insertion rods for positioning.
[0014] Optionally, the box body is provided with a drain pipe, and the drain pipe is movably connected to a blocking cover.
[0015] In summary, this application includes at least one of the following beneficial technical effects:
[0016] 1. Gas flows through the air inlet pipe into the gas cylinder, pushing the inclined blades to rotate. The vertical rod drives all the inclined blades to rotate. As the gas rises in the gas cylinder, the inclined blades stir the gas to remove impurities such as water and dust in the gas. The cleaned gas then flows through the bundle tube into the main body for detection and analysis. The separation component is set to remove water and dust in the collected gas. The bundle tube will not be blocked, and the gas in the return wind corner can be smoothly collected to ensure normal gas monitoring.
[0017] 2. The vertical pole drives the inclined blades and the rotating blades to rotate. The inclined blades transport the accumulated water, dust and other impurities entering the gas cylinder upward. After being transported to the top of the gas cylinder, the rotating blades stir the accumulated water and dust to the circumference of the gas cylinder. The installation of rotating blades and guide plates can speed up the flow of accumulated water and dust from the gas cylinder to other areas of the box. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a mine return air corner gas monitoring device.
[0019] Figure 2 is an exploded view of the separated components.
[0020] Figure 3 It is a schematic diagram of the internal structure of the box.
[0021] Explanation of the accompanying symbols: 1. Main body; 2. Bundle tube; 21. Inlet pipe; 3. Separation assembly; 31. Box body; 311. Cooling pipe; 312. Sealing cover; 313. Guide plate; 314. Insert rod; 315. Drain pipe; 316. Plug cover; 32. Gas cylinder; 33. Vertical pole; 331. Rotating blade; 34. Inclined blade; 4. One-way valve; 5. Spiral tube; 6. Filter head; 7. Adsorption plate. DETAILED DESCRIPTION
[0022] The present application is further described in detail below in conjunction with all the accompanying drawings.
[0023] An embodiment of the present application discloses a mine return air corner gas monitoring device.
[0024] Reference Figure 1 and Figure 2 A mine return air corner gas monitoring device includes a main body 1 connected to a bundle of tubes 2. The end of the bundle of tubes 2 facing away from the main body 1 serves as an air inlet pipe 21. To collect gas from the mine return air corner, a drive pump within the main body 1 is activated, drawing gas through the bundle of tubes 2.
[0025] Reference Figure 1 and Figure 2 The end of the intake pipe 21 facing away from the housing 31 is threadedly connected to a hollow spiral tube 5. The spiral tube 5 is made of non-deformable metal or other rigid material. A first filter is provided at the end of the spiral tube 5 near the intake pipe 21. The end of the spiral tube 5 facing away from the intake pipe 21 is threadedly connected to a filter head 6. The filter head 6 is hollow and frustum-shaped. The diameter of the filter head 6 gradually decreases from the end away from the intake pipe 21 to the end near the intake pipe 21. A second filter is provided at the end of the filter head 6 near the intake pipe 21. The gas collected from the return air corner enters through the filter head 6. The second filter in the filter head 6 performs preliminary filtration on the passing gas, removing some dust and other impurities in the gas.
[0026] Reference Figure 1 and Figure 2 The remaining gas then passes through the second filter and enters the spiral tube 5. Due to its helical bending characteristics, the spiral tube 5 is unlikely to continue to flow with the gas. The spiral tube 5 and the first filter can further filter and block impurities in the gas, which helps to further reduce the impurity content in the gas. The filter head 6 and spiral tube 5 can be removed and cleaned regularly to ensure normal subsequent use.
[0027] Reference Figure 1 and Figure 2The bundle tube 2 is equipped with a separation assembly 3, which includes a housing 31, a gas delivery cylinder 32, a vertical rod 33, and multiple sets of parallel, inclined blades 34. The housing 31 contains pure water or other liquid with easily soluble impurities. The lower end of the gas delivery cylinder 32 is fixedly connected to the housing 31. The upper end of the gas delivery cylinder 32 has an opening and is shorter than the height of the housing 31. The air intake pipe 21 passes through the housing 31 and the gas delivery cylinder 32 in sequence. The gas collected at the return air corner flows through the air intake pipe 21 and into the gas delivery cylinder 32.
[0028] Reference Figure 1 and Figure 2 The vertical rod 33 is located inside the gas cylinder 32, and its lower end is rotatably connected to the housing 31. Each set of inclined blades 34 is fixedly connected to the vertical rod 33, and all inclined blades 34 are arranged along the height of the vertical rod 33. The outlet of the air inlet pipe 21 corresponds to the lowest inclined blade 34. After the collected gas enters the gas cylinder 32 from the air inlet pipe 21, the gas aligns with the inclined blades 34, which in turn drives the inclined blades 34 to rotate. The vertical rod 33 then drives all inclined blades 34 to rotate. As the gas rises inside the gas cylinder 32, the inclined blades 34 stir the gas, removing impurities such as accumulated water and dust from the gas.
[0029] Reference Figure 1 and Figure 2 The upper end of the housing 31, facing away from the intake pipe 21, is connected to the bundle pipe 2. The cleaned gas then flows through the upper end of the housing 31 into the bundle pipe 2, then through the bundle pipe 2 into the main body 1 for detection and analysis. Check valves 4 are installed at the junctions between the bundle pipe 2, intake pipe 21, and the housing 31. These check valves prevent liquid from entering the housing 31 and the intake pipe 21. The separation assembly 3 removes accumulated water and dust from the collected gas, preventing clogging of the bundle pipe 2. Gas from the return air corner can be collected smoothly, ensuring proper gas monitoring.
[0030] Reference Figure 2 and Figure 3 The upper end of the vertical rod 33 extends through the air cylinder 32 and is fixedly connected to a plurality of rotating blades 331. When the vertical rod 33 rotates, all the inclined blades 34 and the rotating blades 331 rotate accordingly. The inclined blades 34 transport impurities such as accumulated water and dust entering the air cylinder 32 upward. After being transported to the top of the air cylinder 32, the rotating blades 331 stir the accumulated water and dust, stirring them around the air cylinder 32. Two inclined guide plates 313 are fixed within the box 31, located on either side of the air cylinder 32 and symmetrically arranged along the air cylinder 32. The installation of the rotating blades 331 and guide plates 313 can accelerate the flow of accumulated water and dust from the air cylinder 32 to other areas of the box 31.
[0031] Reference Figure 2 and Figure 3A cooling cavity is provided on the inner wall of the box 31, and a cooling pipe 311 is installed in the cooling cavity. The drawn-in gas, accumulated water, dust, etc. have a certain temperature. The cooling pipe 311 can cool the gas and liquid in the box 31, thereby reducing the temperature of the collected gas and ensuring the monitoring effect.
[0032] Reference Figure 2 and Figure 3 The upper end of the box body 31 is hingedly connected to a sealing cover plate 312. The lower end surface of the sealing cover plate 312 is fixedly connected to an adsorption plate 7 corresponding to the rotating blade 331. After the accumulated water, dust and other impurities in the gas cylinder 32 move to the upper part of the gas cylinder 32, the adsorption plate 7 can adsorb the impurities, which helps to reduce the overall impurity content in the box body 31. The sealing cover plate 312 can be opened regularly to clean the impurities on the adsorption plate 7. The box body 31 is provided with a drain pipe 315, which is clamped with a plug cover 316. When the box body 31 is not in operation, the plug cover 316 can be opened to drain the liquid and impurities in the box body 31, ensuring the subsequent use effect of the separation component 3.
[0033] Reference Figure 2 and Figure 3 The box body 31 is fixed with four insertion rods 314 for positioning. The four insertion rods 314 are respectively located at the four end corners of the bottom surface of the box body 31. When the operator uses the box body 31, the insertion rods 314 are inserted into the ground to ensure the overall stability of the box body 31 during use, so as to ensure the use effect of the separation component 3.
[0034] The operating principle of a mine return air corner gas monitoring device according to the present embodiment is as follows: Gas collected from the return air corner enters through filter head 6. The second filter within filter head 6 performs preliminary filtration on the passing gas, while the spiral tube 5 and the first filter further filter and block impurities in the gas. The gas then flows through the intake pipe 21 and into the gas delivery cylinder 32. The gas aligns with the inclined blades 34, which in turn rotate the inclined blades 34. The vertical rods 33 then drive the inclined blades 34 to rotate. As the gas rises within the gas delivery cylinder 32, the inclined blades 34 agitate the gas, removing impurities such as water and dust from the gas. The cleaned gas then enters the bundle tube 2 through the upper end of the housing 31, and then flows through the bundle tube 2 into the main body 1 for detection and analysis. The separation assembly 3 removes water and dust from the collected gas, preventing the bundle tube 2 from clogging. This allows for smooth collection of gas from the return air corner and ensures proper gas monitoring.
[0035] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A mine return air corner gas monitoring device, comprising a main body (1), characterized in that: The main body (1) is connected to a bundle tube (2), one end of the bundle tube (2) facing away from the main body (1) is set as an air inlet pipe (21), the bundle tube (2) is provided with a separation assembly (3), the separation assembly (3) comprises a box (31), a gas delivery cylinder (32), a vertical rod (33) and a plurality of mutually parallel inclined blades (34), the gas delivery cylinder (32) is fixed in the box (31) and has an opening at its upper end, the vertical rod (33) is located at the gas delivery cylinder (32) and is rotatably connected to the box body (31), each group of inclined blades (34) is fixedly connected to the vertical rod (33), the air intake pipe (21) is sequentially passed through the box body (31) and the air delivery cylinder (32), the air intake pipe (21) corresponds to the inclined blade (34) at the lower end, the upper end of the box body (31) is connected to the bundle pipe (2), and a one-way valve (4) is provided at the connection between the bundle pipe (2), the air intake pipe (21) and the box body (31).
2. The mine return air corner gas monitoring device according to claim 1, characterized in that: The air inlet pipe (21) is movably connected to a hollow spiral pipe (5), and a first filter screen is provided at one end of the spiral pipe (5) close to the air inlet pipe (21).
3. The mine return air corner gas monitoring device according to claim 2, characterized in that: The end of the spiral tube (5) facing away from the air inlet pipe (21) is movably connected to a filter head (6), the filter head (6) is in the shape of a hollow truncated cone, and the end of the filter head (6) close to the air inlet pipe (21) is provided with a second filter screen.
4. The mine return air corner gas monitoring device according to claim 1, characterized in that: The upper end of the vertical rod (33) passes through the air delivery cylinder (32) and is fixedly connected to a plurality of rotating blades (331). The inner wall of the box body (31) is provided with a cooling cavity, and a cooling pipe (311) is provided in the cooling cavity.
5. The mine return air corner gas monitoring device according to claim 4, characterized in that: The upper end of the box body (31) is movably connected to a sealing cover plate (312), and the lower end surface of the sealing cover plate (312) is fixedly connected to an adsorption plate (7) corresponding to the rotating blade (331).
6. The mine return air corner gas monitoring device according to claim 1, characterized in that: Two inclined guide plates (313) are fixedly arranged in the box body (31), and the guide plates (313) are symmetrically arranged along the gas cylinder (32).
7. The mine return air corner gas monitoring device according to claim 1, characterized in that: The box body (31) is provided with a plurality of insertion rods (314) for positioning.
8. The mine return air corner gas monitoring device according to claim 1, characterized in that: The box body (31) is provided with a liquid discharge pipe (315), and the liquid discharge pipe (315) is movably connected to a blocking cover (316).