A diesel exhaust treatment device for a diesel monorail in a mine

Abstract

The utility model discloses a kind of diesel single rail hoist tail gas treatment devices for underground, it is related to tail gas treatment technical field, including purification tank, water inlet, drain, air inlet and gas outlet are provided on purification tank;Water inlet is located above drain, for adding purifying liquid in purification tank;Drain is arranged at the bottom of purification tank, for discharging purifying liquid in purification tank;Switch valve is respectively arranged on water inlet and drain;The diesel engine tail gas collection cover of single rail hoist is connected outside air inlet, its inside is connected with gas outlet pipe, the outlet of gas outlet pipe is submerged below the liquid level of purifying liquid;Gas outlet is higher than the highest liquid level of purifying liquid.This structure makes tail gas can be fully contacted with purifying liquid and purified, while ensuring that the gas after treatment is smoothly discharged, effectively carries out preliminary treatment to diesel single rail hoist tail gas, removes part of pollutant.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to an exhaust gas treatment device for a diesel monorail crane used in underground wells. Background Technology

[0002] A monorail is a transportation system that runs on a specially designed track suspended above the tunnel. The track consists of various functional monorail vehicles connected together and pulled by traction equipment. Traction power sources are diverse, including wire ropes, diesel engines, batteries, or pneumatic devices. In underground working environments, diesel-powered monorails are widely used in coal mining and other mining operations due to their powerful performance and adaptability.

[0003] However, during operation, diesel-powered monorail cranes emit exhaust fumes containing not only small amounts of pollutants and odors due to incomplete combustion of diesel fuel, but also noticeable black smoke. This black smoke, primarily composed of unburned carbon particles, severely pollutes the underground tunnel environment. On one hand, the black smoke reduces visibility in the tunnels, affecting workers' vision and increasing safety hazards during operations; on the other hand, the harmful substances in the black smoke can damage workers' respiratory systems and other bodily functions, endangering their health. Utility Model Content

[0004] The purpose of this invention is to provide a diesel monorail exhaust gas treatment device for underground drilling, which can efficiently treat the exhaust gas of underground diesel monorails, effectively reduce black smoke emissions, and improve the underground working environment.

[0005] To achieve the above objectives, this utility model provides a diesel monorail exhaust gas treatment device for underground wells, including a purification tank. The purification tank is equipped with a water inlet, a drain outlet, an air inlet, and an air outlet. The water inlet is located above the drain outlet and is used to add purification liquid into the purification tank. The drain outlet is located at the bottom of the purification tank and is used to discharge the purification liquid from the purification tank. Switch valves are respectively installed on the water inlet and the drain outlet. The outside of the air inlet is connected to the diesel engine exhaust gas collection hood of the monorail, and the inside of the air inlet is connected to an exhaust pipe. The outlet of the exhaust pipe is submerged below the level of the purification liquid. The exhaust outlet is higher than the maximum level of the purification liquid.

[0006] With the above structure, by setting up an inlet and an outlet, with the inlet located above the outlet and equipped with a switch valve, it is convenient to add and discharge the purification liquid into the purification tank, thus achieving flexible management of the purification liquid; the air inlet is externally connected to the exhaust gas collection hood and internally connected to the air outlet pipe, with the outlet pipe outlet submerged below the purification liquid level and the air outlet higher than the highest purification liquid level. This structure allows the exhaust gas to fully contact the purification liquid for purification treatment, while ensuring that the treated gas is smoothly discharged, effectively performing preliminary treatment of diesel monorail crane exhaust gas and removing some pollutants.

[0007] Preferably, a filter device is fixedly installed inside the purification chamber. The filter device includes a filter box fixed inside the purification chamber and relatively sealed, with a gas inlet and a gas outlet on the filter box. A filter screen is installed between the gas inlet and the gas outlet. The gas inlet is connected to the gas outlet, and an outlet pipe is installed on the gas outlet. The filter screen is used to initially filter particulate pollutants in the exhaust gas, intercepting large particles of carbon soot, oil mist, and roadway dust, reducing the suspended solids concentration of the washing liquid in the subsequent purification process, delaying water quality deterioration, reducing filter residue, and reducing the frequency of washing liquid replacement and operation and maintenance costs. Then, the purification liquid further purifies harmful substances and odors in the exhaust gas, improving exhaust gas treatment efficiency and significantly improving the underground working environment.

[0008] Preferably, the filter screen has multiple layers from the gas inlet to the gas outlet, with the pore size gradually decreasing. This staged filtration method coarsely filters out large particles, gradually removing pollutants of different sizes from the exhaust gas. This effectively reduces the entry of carbon particles and other contaminants from black smoke into subsequent purification stages, lowers the pressure on single-layer filters, prevents filter clogging, and extends the filter's lifespan.

[0009] Preferably, one side wall of the filter box is open; the open side is sealed and fixed to the inner side wall of the purification chamber; a dispensing port is provided on the purification chamber corresponding to the open side, and the filter screen can be removed from the open side and the dispensing port; a detachable cover is installed on the dispensing port, and the cover is installed to close the dispensing port. This design makes it convenient to open the cover and remove the filter screen when it needs to be replaced or cleaned, which is simple to operate and ensures the long-term effective operation of the filtration device.

[0010] Preferably, the filter box has slide rails on the side walls on both sides of the opening, and the filter screen frame is slidably installed in the slide rails. The slide rails guide and support the filter screen, maintain the gap between adjacent filter screens, and make the installation and removal of the filter screen smoother and easier to maintain.

[0011] Preferably, multiple gas outlets are provided, and each gas outlet is equipped with a gas outlet pipe. Multiple gas outlet pipes increase the channels for exhaust gas discharge, improve exhaust gas treatment efficiency, and allow more exhaust gas to enter the purification liquid for purification treatment at the same time.

[0012] Preferably, an air outlet is provided at the bottom of the exhaust pipe; the air jet direction of the air outlet is towards one side of the purification chamber. This design allows the exhaust gas to contact the purification liquid more evenly, increases the contact area between the exhaust gas and the purification liquid, improves the purification effect, and further removes harmful substances from the exhaust gas.

[0013] Preferably, the outer side of the filter box is covered by a funnel-shaped gas guide hood above the gas outlet; the gas outlet pipe is connected to the minimum diameter of the gas guide hood. The gas guide hood can better guide the gas into the gas outlet pipe, reduce gas leakage, ensure the stability of the exhaust gas treatment process, and allow the exhaust gas to enter the purification liquid more concentratedly through the gas outlet pipe for purification.

[0014] Preferably, a pressure sensor is installed between the air inlet and the gas inlet to detect the pressure value inside the pipeline. When the filter screen is clogged, the inlet pressure will increase significantly. By detecting the change in the absolute value of the pressure, the degree of filter screen clogging can be determined, so that timely manual intervention can be carried out to ensure the normal operation of the filtration device and the entire exhaust gas treatment device.

[0015] Preferably, the bottom of the purification chamber is also provided with a drain port, which is detachably covered. The drain port is used to discharge the waste from the bottom of the purification chamber.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] This utility model discloses a diesel monorail hoist exhaust gas treatment device for underground use, which solves the technical problem of exhaust gas emissions from diesel engines of monorail hoists in roadways causing a harsh roadway environment. This utility model features an inlet and an outlet, with the inlet located above the outlet and equipped with a switch valve for easy addition and discharge of purification liquid into the purification tank, enabling flexible management of the purification liquid. The inlet is externally connected to an exhaust gas collection hood and internally connected to an outlet pipe, with the outlet submerged below the purification liquid level and the outlet above the highest purification liquid level. This structure allows the exhaust gas to fully contact the purification liquid for purification treatment, while ensuring the treated gas is smoothly discharged, effectively performing preliminary treatment of diesel monorail hoist exhaust gas and removing some pollutants. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a diesel monorail hoist exhaust gas treatment device for underground use according to this utility model;

[0019] Figure 2 yes Figure 1 Top view;

[0020] Figure 3 yes Figure 2 Partial sectional view of AA;

[0021] Figure 4 yes Figure 3 A magnified view of part B in the image;

[0022] Figure 5 yes Figure 2 Partial sectional view of the CC section;

[0023] Figure 6 yes Figure 5 A magnified view of part of D.

[0024] In the diagram, 1. Purification box, 11. Water inlet, 12. Drain outlet, 13. Air inlet, 14. Air outlet, 15. Take-out outlet, 16. Cover, 17. Sewage outlet, 2. Filter device, 21. Filter box, 211. Gas inlet, 212. Gas outlet, 213. Opening, 214. Slide, 22. Air outlet pipe, 221. Air jet nozzle, 23. Filter screen. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] The orientations mentioned in this specification are based on the orientation of the exhaust gas treatment device for a diesel monorail hoist used in wells during normal operation. They do not limit the orientation during storage and transportation, but only represent relative positional relationships, not absolute positional relationships.

[0027] like Figure 1 and Figure 5 As shown in the figure, a diesel monorail exhaust gas treatment device for underground wells includes a purification box 1, which is a sealed box structure welded from stainless steel plates.

[0028] The purification tank 1 is equipped with a water inlet 11, a drain outlet 12, an air inlet 13, and an air outlet 14. The water inlet 11 is located above the drain outlet 12 and is used to add purification liquid into the purification tank 1; the drain outlet 12 is located at the bottom of the purification tank 1 and is used to discharge the purification liquid from the purification tank 1. The purification liquid includes, but is not limited to, water, alkaline solutions, or special washing liquids for industrial exhaust gas treatment. Switch valves are respectively installed on the water inlet 11 and the drain outlet 12.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, one end of the air inlet 13 is connected to the diesel engine exhaust gas collection hood of the monorail crane via a pipe, introducing the diesel engine exhaust gas collected by the collection hood into the purification box 1. The other end is connected to the exhaust pipe, the outlet of which is submerged below the level of the purification liquid. The exhaust port 14 is above the maximum level of the purification liquid, ensuring that the treated gas can be discharged smoothly.

[0030] This invention treats diesel engine exhaust gas through water washing, effectively removing particulate matter (PM) and black smoke. Carbon soot particles in the diesel exhaust and dust in the tunnel are easily adsorbed by water, and through sedimentation or filtration, PM concentration is significantly reduced, improving visibility. Simultaneously, water evaporation absorbs the high temperature of the exhaust gas, lowering the temperature inside the tunnel, reducing the risk of heat stress, and improving the working environment for workers. Furthermore, water can dissolve sulfur dioxide (SO2) and nitrogen oxides (NOx) in the exhaust gas, generating a weakly acidic solution (requiring regular treatment), reducing the emission of irritating gases. However, the wastewater after washing may contain oil, heavy metals, or acidic substances, requiring centralized treatment and regular discharge through drain outlet 12 to avoid polluting groundwater or the tunnel environment.

[0031] To effectively extend the lifespan of the washing liquid and reduce wastewater volume, a filter device 2 is fixedly installed inside the purification tank 1. The filter device 2 includes a filter box 21 fixed and relatively sealed inside the purification tank 1. The filter box 21 has a gas inlet 211 and a gas outlet 212, with a filter screen 23 positioned between the gas inlet 211 and the gas outlet 212. The filter screen can be a wire mesh or a honeycomb metal mesh. An air inlet 13 connects to the gas inlet 211, allowing exhaust gas to enter directly from the inlet 13. An exhaust pipe 22 is installed on the gas outlet 212, extending below the level of the purified liquid. The filter screen 23 intercepts large particles of carbon soot, oil mist, and road dust in the exhaust gas, reducing the concentration of suspended solids in the washing liquid and slowing down water quality deterioration. Reducing filter residue decreases the frequency of washing liquid replacement and lowers maintenance costs.

[0032] Through the dual purification effect of filter device 2 and purification liquid, the particulate pollutants in the exhaust gas are first initially filtered by filter screen 23 to reduce black smoke, and then the harmful substances and odors in the exhaust gas are further purified by purification liquid. This can effectively remove pollutants in the exhaust gas of diesel monorail cranes, improve exhaust gas treatment efficiency, and significantly improve the underground working environment.

[0033] Furthermore, the filter screen 23 has multiple layers from the gas inlet 211 to the gas outlet 212, with gradually decreasing pore sizes. This staged filtration method, with coarse filtration intercepting large particles and fine filtration targeting PM2.5 to PM10, can reduce the pressure on a single layer of filter screen 23, and can gradually filter out pollutants of different particle sizes in the exhaust gas, effectively reducing the entry of carbon particles and other particles in black smoke into subsequent purification stages; at the same time, it avoids clogging of the filter screen 23, thus improving its service life.

[0034] like Figure 6As shown, in practical applications, the filter screen 23 needs to be maintained and replaced regularly to ensure its continuous and effective filtration performance. To facilitate the removal and replacement of the filter screen 23, one side wall of the filter box 21 is open 213; the open 213 is sealed and fixed to the inner side wall of the purification chamber 1; a dispensing port 15 is provided on the purification chamber 1 corresponding to the open 213, through which the filter screen 23 can be removed; a cover 16 is detachably installed on the dispensing port 15, and the cover 16 is sealed to the dispensing port 15. A sealing ring can be provided between the cover 16 and the dispensing port 15 to achieve a seal on the dispensing port 15 when the cover 16 is fixedly installed. When the filter screen 23 needs to be replaced or cleaned, the cover 16 can be opened, and the filter screen 23 can be removed from the dispensing port 15 and the open 213. This convenient operation ensures the long-term effective operation of the filtration device 2.

[0035] To facilitate the removal of the filter screen 23, slide rails 214 are provided on the side walls of the filter box 21 on both sides of the opening 213. Slider blocks are provided on the mesh frames on both sides of the filter screen 23, and the sliders are slidably installed in the slide rails 214. The slide rails 214 can guide and support the filter screen 23 to a certain extent, maintain the gap between adjacent filter screens 23; at the same time, it makes the installation and removal of the filter screen 23 smoother and easier to maintain.

[0036] Furthermore, multiple gas outlets 212 are provided, each equipped with an outlet pipe 22; the multiple outlet pipes 22 increase the channels for exhaust gas discharge and improve treatment efficiency. A funnel-shaped air guide cover is provided on the outside of the filter box 21 above the gas outlets 212; the outlet pipe 22 is connected to the minimum diameter of the air guide cover, which better guides the gas into the outlet pipe 22, reduces gas leakage, and ensures the stability of the exhaust gas treatment process.

[0037] Furthermore, an air outlet 221 is provided at the bottom of the exhaust pipe 22; the air outlet 221 faces one side of the purification box 1. This design allows the exhaust gas to come into more uniform contact with the purification liquid, improving the purification effect and further removing harmful substances from the exhaust gas.

[0038] A pressure sensor is installed between the air inlet and the gas inlet to detect the pressure value at the pipe opening.

[0039] To detect the filter 23, a pressure sensor is installed between the air inlet 13 and the gas inlet 211 to detect the pressure value inside the pipeline. When the filter 23 is clogged, the inlet pressure will increase significantly. When the pressure value exceeds a set threshold, an alarm device is triggered to prompt the filter to be replaced.

[0040] The bottom of the purification tank 1 is also provided with a drain outlet 17, and a plug can be detachably installed on the drain outlet 17. The drain outlet 17 is used to discharge impurities that have settled at the bottom of the purification tank and cannot be discharged from the drain outlet 12 with the sewage.

[0041] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A diesel monorail exhaust gas treatment device for underground drilling, characterized in that: The purification box includes a water inlet, a drain outlet, an air inlet, and an air outlet. The water inlet is located above the drain outlet and is used to add purification liquid into the purification tank; the drain outlet is located at the bottom of the purification tank and is used to discharge the purification liquid from the purification tank; a switch valve is provided on both the water inlet and the drain outlet. The air inlet is externally connected to a diesel engine exhaust gas collection hood of a monorail crane, and internally connected to an exhaust pipe. The outlet of the exhaust pipe is submerged below the level of the purification liquid; the exhaust port is above the highest level of the purification liquid.

2. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 1, characterized in that: A filter device is fixedly installed inside the purification chamber; the filter device includes a filter box fixed inside the purification chamber and relatively sealed, and the filter box is provided with a gas inlet and a gas outlet; a filter screen is provided between the gas inlet and the gas outlet; the air inlet is connected to the gas inlet, and the air outlet pipe is installed on the gas outlet.

3. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 2, characterized in that: The filter screen has multiple layers from the gas inlet direction to the gas outlet direction, and its pore size gradually decreases.

4. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 2, characterized in that: One side wall of the filter box is open; the open side is sealed and fixed to the inner side wall of the purification box; the purification box is provided with an outlet corresponding to the open side, and the filter screen can be removed from the open side and the outlet; a cover is detachably installed on the outlet, and the cover is closed on the outlet.

5. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 4, characterized in that: The filter box has slides on the side walls on both sides of the opening, and the filter screen frame is slidably installed in the slides.

6. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 2, characterized in that: The gas outlet is provided with multiple outlets, and each gas outlet is equipped with a gas outlet pipe.

7. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 2, characterized in that: The bottom of the air outlet pipe is provided with an air jet nozzle; the air jet nozzle is directed toward one side of the purification box.

8. The exhaust gas treatment device for a diesel monorail crane used in underground wells according to claim 2, characterized in that: The filter box is covered by a funnel-shaped gas guide cover on the outside of the gas outlet; the gas outlet pipe is connected to the minimum diameter of the gas guide cover.

9. A diesel monorail exhaust gas treatment device for underground drilling according to claim 2, characterized in that: A pressure sensor is installed between the air inlet and the gas inlet to detect the pressure value inside the pipeline.

10. A diesel monorail exhaust gas treatment device for underground drilling according to claim 1, characterized in that: The bottom of the purification box is also provided with a drain outlet, and a plug can be detachably installed on the drain outlet.

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