A device for cleaning and recycling fine coal from a mine truck

Abstract

The present application relates to the technical field of coal truck cleaning, and particularly relates to a mine coal truck exit cleaning and fine coal recovery device, which comprises a vehicle passing ground passage, a cleaning part arranged in the vehicle passing ground passage and capable of cleaning the vehicle, and a detection part for detecting the coal-containing sewage after cleaning to adjust the cleaning part to clean the vehicle according to the corresponding cleaning efficiency. The present application can effectively improve the cleaning efficiency of fine coal on the surface of the vehicle and reduce the pollution of fine coal to the environment.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology for mining coal trucks, specifically a device for cleaning and recovering fine coal from mining coal trucks before they leave the warehouse. Background Technology

[0002] During coal transportation, coal loading and unloading trucks inevitably accumulate a large amount of fine coal particles. These particles fall onto the ground as the vehicles move, and the coal particles on the roof generate significant dust, leading to severe environmental pollution and substantial coal waste. Currently, after unloading, coal loading and unloading trucks are typically washed manually with handheld high-pressure water guns, a labor-intensive and time-consuming process. To address these technical problems, patent CN213973926U discloses a coal loading vehicle cleaning device, including a vehicle cleaning mechanism. A vehicle sensing mechanism and a PLC controller are located at the vehicle inlet of the cleaning mechanism. Several coal-containing wastewater conveying troughs are located on the ground directly below the cleaning mechanism. Using automatically controlled cleaning equipment significantly improves cleaning efficiency and reduces manpower input. However, the automatic cleaning equipment in the existing technology typically uses a fixed cleaning time, which can lead to over-cleaning of vehicles with fewer fine coal particles on their surface; conversely, vehicles with more fine coal particles may experience insufficient cleaning time, resulting in incomplete removal of the fine coal. Therefore, a solution is urgently needed to address these technical problems in the existing technology. Summary of the Invention

[0003] To avoid and overcome the technical problems existing in the prior art, this invention provides a device for cleaning and recovering fine coal particles from mining coal trucks before they leave the depot. This invention can effectively improve the cleaning efficiency of fine coal particles on the vehicle surface and reduce the environmental pollution caused by fine coal particles.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A device for cleaning and recovering fine coal from mining coal trucks includes a vehicle passageway, a cleaning unit arranged within the passageway for cleaning the vehicles, and a detection unit for detecting the coal-containing wastewater after cleaning to adjust the cleaning unit to clean the vehicles at a corresponding cleaning efficiency.

[0006] As a further aspect of the present invention, the formula for calculating the cleaning efficiency is as follows:

[0007]

[0008]

[0009] Where η is the cleaning efficiency, M is the concentration of coal-containing wastewater at the start of cleaning, m is the concentration of coal-containing wastewater at the end of cleaning, N is the rotation speed of the roller brush used to scrub the vehicle, P is the spray pressure of the water gun used to clean the vehicle, E is the degree of removal of fine coal particles from the vehicle, and T is the cleaning time.

[0010] As a further embodiment of the present invention: roller brushes are rotatably arranged on the side walls on both sides of the vehicle passage, and telescopic rods are arranged at both ends of the rotating shaft of the roller brushes to push the roller brushes toward and attach them to the corresponding side of the vehicle.

[0011] As a further embodiment of the present invention: the axis of rotation of the rolling brush is arranged vertically, the length of the rolling brush is greater than the height of the vehicle, and the vehicle is located within the wiping range of the rolling brush; each group of rolling brushes on the same side is arranged evenly along the length of the vehicle on the corresponding side wall of the passageway.

[0012] As a further aspect of the present invention: the passageway is provided with pressurized water guns on both sides of the vehicle, and the spray direction of the pressurized water guns is directed towards the corresponding side of the vehicle.

[0013] As a further aspect of the present invention: each group of pressure water guns on the same side is arranged in an array on the corresponding side wall of the vehicle passage, and the corresponding side of the vehicle is within the spray range formed by the arrangement of each group of nozzle arrays.

[0014] As a further aspect of the present invention: an inhibitor sprayer is arranged at the top of the material passage, and each group of inhibitor sprayers is arranged evenly along the length of the vehicle, with the top surface of the vehicle located within the spray range formed by each group of inhibitor sprayers.

[0015] As a further aspect of the present invention: a trapezoidal collection trough is provided at the bottom of the vehicle passage, and a mesh drainage plate is covered at the opening of the trapezoidal collection trough, through which coal-containing sewage flows into the trapezoidal collection trough.

[0016] As a further aspect of the present invention: a concentration meter for detecting the concentration of coal-containing wastewater is arranged inside the trapezoidal collection tank, and the concentration meter is located on the flow path of the coal-containing wastewater.

[0017] As a further embodiment of the present invention: the trapezoidal collection tank is connected to the slurry pump, and the outlet end of the slurry pump is connected to a rake thickener.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The vehicles of this invention can be directly washed upon exiting the mining area and entering the vehicle passage, significantly reducing the time required for manual washing, accelerating washing efficiency, and increasing safety during the washing process. The detection unit can monitor the concentration of coal-containing wastewater in real time, thereby controlling the various cleaning components in the cleaning unit to thoroughly clean the vehicle, effectively removing fine coal particles adhering to the vehicle surface within an appropriate timeframe.

[0020] 2. When the ultrasonic detector detects a vehicle passing by, it automatically identifies the width of the vehicle through feedback from the ultrasonic detector, and then sends feedback to the extension rods of the roller brushes on both sides, so that the roller brushes are automatically adjusted to a suitable position, thereby washing both sides of the vehicle and improving the cleaning efficiency of both sides.

[0021] 3. The design of the grid drainage plate can more fully drain the coal-containing wastewater from the flushing into the trapezoidal collection tank. The coal-containing wastewater in the trapezoidal collection tank is pumped to the rake thickener for thickening and dewatering treatment, thereby recycling the fine coal particles.

[0022] 4. When a vehicle passes through the passageway, the connected dust suppressant sprayer is activated to prevent a large amount of fine coal particles from being blown off the roof of the vehicle during coal transportation, thus avoiding waste of resources and environmental pollution. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0025] Figure 3 This is a top view of the vehicle passageway in this invention.

[0026] In the picture:

[0027] 10. Vehicle passageway; 11a. First baffle; 11b. Second baffle; 11c. Third baffle; 20. Cleaning section; 21. Roller brush; 22. Telescopic rod; 23. Pressure water gun; 24. Inhibitor sprayer; 25. Ultrasonic detector; 30. Recovery section; 31. Trapezoidal collection trough; 32. Grid drainage plate; 33. Concentration meter; 34. Slurry pump. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-3 The first baffle 11a and the second baffle 11b are symmetrically arranged and fixed on the bottom surface, with the surfaces of the first baffle 11a and the second baffle 11b being parallel and vertically arranged. A third baffle 11c is installed on top of the first baffle 11a and the second baffle 11b. The three baffles cooperate with each other to form a cuboid-shaped vehicle passage 10, which vehicles pass through when leaving the mining area.

[0030] A cleaning unit 20 is arranged within the vehicle passage 10, forming a cleaning zone for vehicle cleaning. Vehicles enter through entrance B and exit through entrance C after cleaning. The cleaning unit 20 includes multiple structures symmetrically arranged on the first baffle 11a and the second baffle 11b. Since the first baffle 11a and the second baffle 11b are symmetrically arranged, the structure at the first baffle 11a will be described below. Three layers of pressurized water guns 23 are arranged on the inner side of the first baffle 11a in the cleaning zone, with eight pressurized water guns 23 in each layer, for a total of twenty-four pressurized water guns 23 arranged in an array. The corresponding side of the vehicle is within the spray range formed by this array arrangement. The large number of pressurized water guns 23 can wash away fine coal particles from the vehicle body. Ultrasonic detectors 25 are installed on the inner wall of the second baffle 11b at both entrances B and C of the vehicle passage 10.

[0031] To ensure vehicles can pass smoothly through the passageway 10, the distance between the first baffle 11a and the second baffle 11b needs to be slightly greater than the width of the vehicle. The third baffle 11c above the passageway 10 is slightly higher than the height of the vehicle, so that the vehicle can avoid the pressure water guns 23 on both sides of the passageway 10 and the automatic dust suppression spraying device above it.

[0032] The pressure water guns 23, located on the top two layers of the first baffle 11a, will open after the vehicle passes through the ultrasonic detector 25 at port B to wash the vehicle body. Because the pressure water guns 23 have sufficient water pressure, they easily wash away the fine coal particles on both sides of the vehicle body, turning them into coal-containing wastewater. This coal-containing wastewater then flows through the mesh drain plate 32 into the trapezoidal collection tank 31. To increase the cleaning range of the pressure water guns 23, atomizing nozzles can be installed on the spray holes of the pressure water guns 23.

[0033] The pressure water gun 23, located at the bottom layer of the first baffle 11a, is positioned low within the baffle. When a vehicle approaches the cleaning area, the pressure water gun 23 is as close as possible to the bottom of the vehicle, effectively washing the chassis and wheels and preventing any blind spots in the cleaning process. Similarly, to expand the cleaning range of the pressure water gun 23, atomizing nozzles can be installed on the spray nozzles to ensure that the undercarriage and wheels are thoroughly cleaned. The high pressure of the pressure water gun 23 is sufficient to guarantee a thorough cleaning of the truck chassis and wheels.

[0034] Below the grid drainage plate 32, there is a fine coal water collection tank. The trapezoidal shape allows all the fine coal water to be collected around the slurry pump 34, so that as much fine coal water as possible can be extracted. Three slurry pumps 34 are installed at the bottom of the trapezoidal collection tank 31 to extract the large amount of fine coal water stored in the trapezoidal collection tank 31 to the rake thickener for recycling the fine coal in the fine coal water.

[0035] To improve cleaning efficiency, three roller brushes 21 are installed on each of the first baffle 11a and the second baffle 11b on both sides of the vehicle passage 10. After a vehicle passes the ultrasonic detector 25, the width of the vehicle is measured by ultrasonic feedback, and the information of the truck is transmitted to the telescopic rod 22 of the roller brush 21. The telescopic rod 22 is a hydraulic cylinder. At this time, the hydraulic cylinder adjusts the distance between the roller brush 21 and the vehicle, so as to thoroughly clean both sides of the vehicle.

[0036] Suppressant sprayers 24 are installed on the inner side of the third baffle 11c. The groups of suppressant sprayers 24 are evenly arranged along the length of the vehicle, and the top surface of the vehicle is within the spray range formed by each group of suppressant sprayers 24. Each group of suppressant sprayers 24 will automatically open after the vehicle passes the ultrasonic detector 25, automatically spraying dust suppressant onto the coal loaded in the vehicle to prevent the generation of large amounts of fine coal ash. Similarly, to reduce the occurrence of spray dead zones, atomizing devices can be installed at the spray nozzles of each group of suppressant sprayers 24 to improve spraying efficiency.

[0037] A detection unit 30 is installed at the bottom of the vehicle passage 10. The detection unit 30 includes a trapezoidal collection trough 31 located at the bottom of the vehicle passage 10. A mesh drainage plate 32 covers the opening of the trapezoidal collection trough 31, allowing coal-containing wastewater to flow into the trapezoidal collection trough 31 through the mesh drainage plate 32. The mesh drainage plate 32 is located above the trapezoidal collection trough 31, allowing vehicles to move above the collection trough. Simultaneously, to improve cleaning efficiency, a concentration meter 33 is installed along the path of the coal-containing wastewater flowing into the collection trough. By setting a final concentration standard, the rinsing time to reach this standard is adjusted, and feedback is sent to the pressure water gun 23 and the roller brush 21. By increasing the pressure P of the pressure water gun and changing the rotation speed N of the roller brush 21, the final cleaning efficiency is improved. The cleaning efficiency is set as η, and its calculation formula is as follows:

[0038]

[0039]

[0040] Where η is the cleaning efficiency and E is the degree of removal of fine coal particles from the vehicle;

[0041] M is the concentration of coal-containing wastewater at the start of cleaning, and the value of M ranges from 1g / L to 50g / L.

[0042] m is the concentration of coal-containing wastewater at the end of the cleaning process, and the value of m ranges from 0.1 g / L to 0.5 g / L.

[0043] N is the rotational speed of the roller brush 21 that performs rolling scrubbing on the vehicle, and the value of N is 5r / s-10r / s;

[0044] P is the spray pressure of the water gun 23 used for vehicle washing, and the value of P ranges from 40 bar to 80 bar.

[0045] T represents the cleaning time, which ranges from 60s to 90s.

[0046] When the removal degree E obtained by cleaning is 0.90-0.99, the pressure of the water gun 23 is 80 bar, the rotation speed of the roller brush 21 is 10 r / s, and both P and N are at their maximum values; the time taken is 60 seconds, and the rinsing efficiency at this time corresponds to ultra-clean rinsing.

[0047] When the removal degree E obtained by cleaning is 0.90-0.99, the pressure of the water gun 23 is 60 bar, the rotation speed N of the roller brush 21 is 8 r / s, and the time taken is 75 seconds. The rinsing efficiency at this time corresponds to the standard rinsing.

[0048] When the removal degree E obtained by cleaning is 0.90-0.99, the pressure of the water gun 23 is 40 bar, the rotation speed of the roller brush 21 is 5 r / s, and both P and N are at their minimum values. The time taken is 90 seconds. The rinsing efficiency at this time corresponds to the basic rinsing.

[0049] Therefore, vehicles can be cleaned by adjusting various cleaning parameters according to actual cleaning requirements.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for cleaning and recovering fine coal from a mining coal truck upon delivery, characterized in that, It includes a vehicle passageway (10) for vehicles to pass through, a cleaning unit (20) for cleaning vehicles is arranged in the vehicle passageway (10), and a detection unit (30) for detecting the coal-containing wastewater after cleaning in order to adjust the cleaning unit (20) to clean vehicles according to the corresponding cleaning efficiency. The formula for calculating the cleaning efficiency is as follows: in, η For cleaning efficiency, M The concentration of coal-containing wastewater at the start of the cleaning process. m The concentration value of the coal-containing wastewater at the end of the cleaning process. N The rotational speed of the roller brush (21) used for rolling and scrubbing the vehicle, P To determine the spray pressure of the water gun (23) used during vehicle washing, E The degree of removal of fine coal particles from vehicles. T This refers to the cleaning time.

2. The device for cleaning and recovering fine coal from a mining coal truck as described in claim 1, characterized in that, The passageway (10) is provided with roller brushes (21) on both sides of the vehicle. Both ends of the roller brush (21) are provided with telescopic rods (22) that can push the roller brush (21) to and attach it to the corresponding side of the vehicle.

3. The device for cleaning and recovering fine coal from a mining coal truck as described in claim 2, characterized in that, The rotating shaft of the roller brush (21) is arranged vertically, the length of the roller brush (21) is greater than the height of the vehicle, and the vehicle is located within the wiping range of the roller brush (21); the roller brushes (21) on the same side are arranged evenly along the length of the vehicle on the corresponding side wall of the passageway (10).

4. The device for cleaning and recovering fine coal from a mining coal truck as described in claim 3, characterized in that, The passageway (10) is equipped with pressure water guns (23) on both sides of the vehicle, and the spray direction of the pressure water guns (23) is directed towards the corresponding side of the vehicle.

5. A device for cleaning and recovering fine coal from a mining coal truck as described in claim 4, characterized in that, Each group of pressure water guns (23) on the same side is arranged in an array on the corresponding side wall of the vehicle passage (10), and the corresponding side of the vehicle is within the spray range formed by the arrangement of each group of nozzle arrays.

6. A device for cleaning and recovering fine coal from a mining coal truck as described in claim 2, characterized in that, The top of the vehicle passage (10) is equipped with inhibitor sprayers (24), and each group of inhibitor sprayers (24) is arranged evenly along the length of the vehicle, and the top surface of the vehicle is within the spray range formed by each group of inhibitor sprayers (24).

7. A device for cleaning and recovering fine coal from a mining coal truck as described in claim 5, characterized in that, The detection unit (30) includes a trapezoidal collection trough (31) at the bottom of the vehicle passage (10). A grid drainage plate (32) is closed at the opening of the trapezoidal collection trough (31), and coal-containing sewage flows into the trapezoidal collection trough (31) through the grid drainage plate (32).

8. A device for cleaning and recovering fine coal from a mining coal truck as described in claim 7, characterized in that, The trapezoidal collection tank (31) is equipped with a concentration meter (33) for detecting the concentration of coal-containing wastewater, and the concentration meter (33) is located on the flow path of the coal-containing wastewater.

9. A device for cleaning and recovering fine coal from a mining coal truck as described in claim 8, characterized in that, The trapezoidal collection tank (31) is connected to the slurry pump (34), and the outlet end of the slurry pump (34) is connected to a rake thickener.

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