Innocent treatment device for acidic coal gangue

Abstract

The utility model provides a harmless treatment device for acidic coal gangue. The harmless treatment device comprises a crushing box, a dust removal box, an acid removal box, a neutralization box, a spiral device, a control panel, a switch and a bottom column, the crushing box is positioned at the rear upper part of the harmless treatment device and is connected with the dust removal box through a dust suction pipe; the dust removal box is located right in front of the crushing box; the deacidification box is positioned below the crushing box and is connected with the neutralization box through a feeding pipe; the neutralization box is positioned below the dust removal box and right in front of the acid removal box; the spiral device is located behind the crushing box, and coal gangue is transferred from the crushing box to the spiral device through the transfer platform; the control panel is located on the lower rear portion of the smashing box. The switch is located on the right side of the control panel. The whole device is supported by four bottom columns. According to the device, the water inlet device, the aeration device and the stirring device are arranged in the acid removal box, so that the acid coal gangue acid removal process is accelerated, heat energy generated in the acid coal gangue acid removal process is recycled, meanwhile, dissipation of dust and gas is avoided through the dust removal box, and harmless treatment of acid coal gangue is achieved.

Description

Technical Field

[0001] This utility model relates to a device for treating coal gangue, and more particularly to a device for the harmless treatment of acidic coal gangue. Background Technology

[0002] Coal gangue is a byproduct of coal mining and washing. It has low carbon content, low calorific value, and is harder than coal. Due to the complexity of coal gangue processing and the relatively late start of research on its comprehensive utilization in my country, more than 35% of coal gangue remains stockpiled around mining areas, causing serious environmental damage, especially acidic coal gangue. Acidic coal gangue contains a large amount of pyrite (FeS2). Due to the lattice characteristics of pyrite, it is prone to surface oxidation when exposed to air and water, producing acidic substances. Simultaneously, under low pH conditions, heavy metals in the acidic coal gangue particles dissolve, forming highly acidic wastewater with high heavy metal toxicity. Furthermore, the oxidation reaction of pyrite is exothermic. With large accumulations of acidic coal gangue, heat accumulates, and once this heat reaches the ignition point of the acidic coal gangue, spontaneous combustion occurs, causing serious consequences. Coal gangue, after processing, can be used as building materials, roadbeds, and soil conditioners. However, the exothermic acid production of acidic coal gangue limits its resource reuse. Currently, there is limited research on centralized acid removal treatment of acidic coal gangue. One invention patent, "A Coal Gangue Recycling and Reuse Device and Its Usage Method" (patent number CN118663673A), describes a device that mixes coal gangue with sulfuric acid solution before crushing to achieve initial desulfurization. Subsequently, the coal gangue and sulfuric acid solution are crushed together to reduce dust generation. The crushed coal gangue and sulfuric acid solution are then stirred to continue desulfurization. However, the large amount of heat generated during the mixing of coal gangue and sulfuric acid solution throughout the process reduces the device's lifespan, and the thermal energy is not utilized. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a harmless treatment device for acidic coal gangue, aiming to reduce the pyrite content in acidic coal gangue, decrease the possibility of acid production from acidic coal gangue, and simultaneously collect and utilize the heat energy generated during the pyrite reaction process.

[0004] To achieve the above objectives, this utility model provides a device for the harmless treatment of acidic coal gangue, comprising a crushing box, a dust removal box, an acid removal box, a neutralization box, a spiral device, a control panel, a switch, and base columns. The crushing box is located at the upper rear of the harmless treatment device and is connected to the dust removal box via a suction pipe; the dust removal box is located directly in front of the crushing box; the acid removal box is located below the crushing box and is connected to the neutralization box via a feed pipe; the neutralization box is located below the dust removal box and directly in front of the acid removal box; the spiral device is located behind the crushing box; the control panel is located at the lower rear of the crushing box; the switch is located to the right of the control panel; the entire device is supported by four base columns.

[0005] The pulverizing chamber contains a first filter screen, a second filter screen, protective railings, a flow guide plate, a pulverizing device, a connecting plate, and an intelligent opening and closing plate. The feed inlet is located at the top left of the pulverizing chamber. The first filter screen is located below the feed inlet, inclined, with its left end fixed to the chamber wall and its right end connected to the second filter screen via the connecting plate; the flow guide plate is located below the first filter screen. The pulverizing device includes pulverizing teeth, a rotating shaft, and gears; the pulverizing device is located inside the pulverizing chamber on the right side, with its right end fixed to the chamber wall. The second filter screen is placed below the pulverizing device, inclined, and connected to the spiral device via a lower transfer platform. Protective railings are provided on both the left and right sides of the first and second filter screens. The intelligent opening and closing plate includes an opening and closing plate and a pressure sensor; the opening and closing plate is located at the bottom of the pulverizing chamber, separating the pulverizing chamber from the deacidification chamber; the pressure sensor is located in the middle of the opening and closing plate and connected to the control panel. Acidic coal gangue enters the crushing box and falls onto the first filter screen. Due to gravity, the first and second filter screens vibrate, causing fine particles to pass through the screen mesh and fall onto the opening and closing plate via the guide plate. At the same time, large particles slide down the screen surface to the crushing device. The rotating shaft drives the crushing teeth to rotate and crush the acidic coal gangue. The crushed fine particles then fall onto the opening and closing plate through the second filter screen. Once the pressure sensor inside the opening and closing plate detects that the total weight of the acidic coal gangue has reached the set limit, the control panel controls the opening and closing plate to open. The fine particles of acidic coal gangue fall into the deacidification box, while the larger particles of acidic coal gangue remaining on the second filter screen gather towards the right rear end along the inclined direction of the screen surface. They then enter the spiral device through the lower transfer platform and are subsequently conveyed upwards to re-enter the crushing box.

[0006] The dust collection box is equipped with a suction pipe, a suction screen, a dust brush, a suction device, a dust scraper, and a dust outlet pipe. The suction pipe is located at the top rear end of the dust collection box. The suction screen is installed in the middle of the dust collection box and is inclined from top to bottom. The dust brush is located at the top of the suction screen. The suction device is located in front of the suction screen; the suction device includes a rotating shaft and blades. The dust scraper is located on the left side of the dust collection box, with one side of the scraper in close contact with the suction screen and the other side in close contact with the inner wall of the dust collection box. The dust outlet pipe is located at the right rear end of the dust collection box and connects to the acid removal box. After the dust collection equipment is started, the dust and gas in the crushing chamber are sucked into the dust collection box through the suction pipe. The dust is intercepted on the surface of the suction screen. When the dust on the surface of the suction screen reaches a certain level, the dust removal brush sweeps the dust on the suction screen from top to bottom to the bottom of the dust collection box. Then the dust removal brush returns to its original position, and the dust scraper concentrates the dust on the right side of the dust collection box. The dust is discharged into the acid removal box through the dust outlet pipe, and the gas also enters the acid removal box through the dust outlet pipe. A large amount of dust and gas are generated when coal gangue enters the crushing chamber and is crushed in the crushing chamber. Most of the gas is soluble in water, and the dust can be treated for acid removal together with the crushed acidic coal gangue. Therefore, the dust collection box needs to be started before the acidic coal gangue enters the crushing chamber, and the dust collection equipment must be kept running throughout the entire operation.

[0007] The acid removal tank is equipped with a water inlet, a stirring device, an aeration device, a movable scraper, a water outlet, a material outlet, a battery, a thermoelectric conversion device, and a heat pipe. The water inlet is located on the upper left side of the acid removal tank. The stirring device is installed inside the acid removal tank; the stirring device includes stirring blades, a stirring shaft, and a stirring motor; the right end of the stirring shaft is connected to the stirring motor, and the left end is fixed to the acid removal tank. The aeration device includes an air pump, an air inlet pipe, and vent holes; the air pump is located on the outer left side of the acid removal tank and connected to the air inlet pipe; the air inlet pipe enters the stirring shaft from the left side; the vent holes are evenly distributed on the stirring blades. The movable scraper is located on the left side of the acid removal tank. The battery and thermoelectric conversion device are located on the rear side of the exterior of the acid removal tank; the left side of the thermoelectric conversion device is connected to the battery, and the right side is connected to a heat pipe; the heat pipe is installed on the rear right side inside the acid removal tank. The water outlet is located at the rear of the acid removal tank. The material outlet is located on the lower right side of the acid removal tank. When the acidic coal gangue crushed stone enters the deacidification tank, water is introduced through the inlet, the agitator is activated, and the aeration device simultaneously injects oxygen. The agitator stops after a certain period, and the mixture is left to stand for half an hour. The aeration device then stops, and the supernatant is discharged through the outlet. The moving scraper on the left side of the deacidification tank is activated, guiding the precipitated acidic coal gangue from the right side of the tank into the neutralization tank. The deacidification tank only needs to be filled with water for the first use. Inside the deacidification tank, the acidic coal gangue undergoes an exothermic reaction with water and oxygen. Heat is transferred through heat pipes to a thermoelectric conversion device, which converts the heat into electrical energy, which is then stored in a battery to maintain the operation of the entire process.

[0008] The neutralization tank is equipped with an inlet pipe, a feed pipe, an inclined plate, a filter screen, a discharge pipe, and a water outlet pipe. The inlet pipe is installed at the top right side of the neutralization tank. The feed pipe is located above the right side of the neutralization tank. The inclined plate is installed inside the neutralization tank, with its right end below the feed pipe, and its surface is uneven. The filter screen is located on both the front and rear sides of the inclined plate. The discharge pipe is located below the left side of the neutralization tank, and the water outlet pipe is located below the discharge pipe. Coal gangue from the acid removal tank enters the neutralization tank through the feed pipe and falls onto the inclined plate. Due to gravity, it slowly rolls down the inclined plate from side to side. At the same time, lime water enters through the inlet pipe, and the water flow washes the coal gangue on the inclined plate, neutralizing the residual acidic liquid in the coal gangue. The waste liquid after washing falls to the bottom of the neutralization tank through the filter screen and then flows out through the water outlet pipe. The neutralized coal gangue is discharged from the discharge pipe.

[0009] The spiral device includes a spiral blade, a rotating shaft, an upper transfer platform, and a lower transfer platform. The lower end of the spiral blade is connected to the second filter screen inside the crushing chamber via the lower transfer platform, and the upper end of the spiral blade is connected to the feed inlet of the crushing chamber via the upper transfer platform. After the spiral device is started, the acidic coal gangue remaining on the second filter screen enters the spiral blade through the lower transfer platform. Then, the rotating shaft drives the spiral blade to move upward and is re-transferred to the crushing chamber for further crushing.

[0010] The control panel includes a display screen and control buttons. The control panel is located at the rear lower part of the pulverizing chamber, above the battery. The display screen is located above the control buttons. After the device is turned on, the operation of various parts within the device can be adjusted using the control buttons, and parameters for each part can be set on the display screen, which remains constantly lit to show the real-time operating status of each part.

[0011] The working principle of this utility model is as follows:

[0012] 1. After the device is turned on, first set the pressure limit of the intelligent opening and closing plate in advance via the control panel. Then, pour the acidic coal gangue to be processed into the crushing box. After the acidic coal gangue enters the crushing box, fine particles pass through the screen and fall onto the opening and closing plate via the guide plate, while larger particles slide down the screen surface onto the crushing device for crushing and then fall onto the opening and closing plate through the second filter screen. Once the pressure sensor detects that the total weight borne by the opening and closing plate has reached the pressure limit, the opening and closing plate is opened, and the crushed acidic coal gangue falls into the deacidification box.

[0013] 2. Larger acidic coal gangue particles remaining on the second filter screen accumulate along the inclined direction of the screen surface and enter the spiral device via the lower transfer platform. They are then conveyed upwards and re-enter the crushing chamber for further crushing. The dust collection system is activated before the coal gangue enters the crushing chamber. Dust and gas in the crushing chamber are drawn into the dust collection chamber through the suction pipe. The dust is intercepted on the surface of the suction net. Once the dust on the net reaches a certain level, dust brushes and scrapers force the dust into the dust outlet pipe and then into the acid removal chamber. Gas also enters the acid removal chamber through the dust outlet pipe. After the crushed acidic coal gangue enters the acid removal chamber, water is introduced, and the aeration and stirring devices are activated. After stirring for a certain period, the mixture is allowed to settle. The supernatant is then discharged through the outlet, and the precipitated coal gangue enters the neutralization chamber. The heat generated by the acidic coal gangue in the acid removal chamber is transferred through heat pipes to the thermoelectric conversion device and stored in the battery to maintain the operation of the entire system.

[0014] 3. After the coal gangue falls onto the inclined plate of the neutralization box, lime water is introduced into the water inlet pipe. The water flow washes and neutralizes the acidic liquid remaining in the coal gangue. The waste liquid after washing flows out through the water outlet pipe, and the neutralized coal gangue is discharged from the discharge pipe.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model is equipped with a water inlet, aeration device and a stirring device in the acid removal box, which accelerates the reaction rate of acidic coal gangue with water and oxygen, reduces the pyrite content in the acidic coal gangue, and achieves the purpose of acid removal from acidic coal gangue; the dust and gas generated by coal gangue crushing are collected in the dust removal box and transferred to the acid removal box for treatment, avoiding the cost required for separate treatment of dust and gas.

[0017] 2. This utility model utilizes a thermoelectric conversion device to convert the heat energy generated during the acid removal process of acidic coal gangue into electrical energy for the operation of the device. This not only reduces equipment damage caused by overheating but also improves the stability and service life of the equipment; at the same time, it achieves energy self-sufficiency to a certain extent. Attached Figure Description

[0018] Figure 1 This is a diagram of an acidic coal gangue harmless treatment device.

[0019] Figure 2 This is a cross-sectional view of a harmless treatment device for acidic coal gangue.

[0020] Figure 3 Rear view of the acidic coal gangue harmless treatment device;

[0021] Figure 4 This is a structural diagram of the dust collector;

[0022] Figure 5 This is a structural diagram of the acid removal box;

[0023] Figure 6 This is a structural diagram of the neutralization box;

[0024] Figure 7 For the gears of the crushing device.

[0025] List of reference numerals in the attached diagram:

[0026] 1-Grinding box, 11-Feed inlet, 12-First filter screen, 13-Second filter screen, 14-Guard railing, 15-Drainage plate, 16-Grinding device, 161-Grinding teeth, 162-Rotating shaft, 163-Gear, 17-Connecting plate, 18-Intelligent opening and closing plate, 181-Opening and closing plate, 182-Pressure sensor, 2-Dust collection box, 21-Dust suction pipe, 22-Dust suction net, 23-Dust collection brush, 24-Dust collection equipment, 241-Rotating shaft, 242-Blade, 25-Dust scraper, 26-Dust outlet pipe, 3-Acid removal box, 31-Water inlet, 32-Stirring device, 321-Stirring blade, 322-Stirring blade Shaft, 323-Agitator motor, 33-Aeration device, 331-Air pump, 332-Air inlet pipe, 333-Ventilation hole, 34-Moving scraper, 35-Water outlet, 36-Discharge outlet, 37-Battery, 38-Thermoelectric conversion device, 39-Heat conduction pipe, 4-Neutralization box, 41-Water inlet pipe, 42-Feed pipe, 43-Inclined plate, 44-Filter screen, 45-Discharge pipe, 46-Water outlet pipe, 5-Spiral device, 51-Spiral shaft, 52-Spiral blade, 53-Upper transfer platform, 54-Lower transfer platform, 6-Control panel, 61-Display screen, 62-Control buttons, 7-Switch, 8-Bottom column. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] like Figure 1-3 As shown, an acidic coal gangue harmless treatment device of this embodiment includes a crushing box 1, a dust removal box 2, an acid removal box 3, a neutralization box 4, a spiral device 5, a control panel 6, a switch 7, and base columns 8. The crushing box 1 is located at the upper rear of the harmless treatment device and is connected to the dust removal box 2 via a dust suction pipe 21; the dust removal box 2 is located directly in front of the crushing box 1; the acid removal box 3 is located below the crushing box 1, and the neutralization box 4 is located below the dust removal box 2 and directly in front of the acid removal box 3; the spiral device 5 is located behind the crushing box 1; the control panel 6 is located at the lower rear of the crushing box 1; the switch 7 is located to the right of the control panel 6; the entire device is supported by four base columns 8.

[0029] like Figure 2 and Figure 7As shown, the crushing chamber 1 contains a first filter screen 12, a second filter screen 13, a guardrail 14, a guide plate 15, a crushing device 16, a connecting plate 17, and an intelligent opening and closing plate 18. The feed inlet 11 is located at the top left of the crushing chamber 1. The first filter screen 12 is located below the feed inlet 11 and is inclined. The left end of the first filter screen is fixed to the wall of the crushing chamber 1, and the right end is connected to the second filter screen 13 through the connecting plate 17. The guide plate 15 is located below the first filter screen 12. The crushing device 16 includes crushing teeth 161, a rotating shaft 162, and a gear 163. The crushing device 16 is located on the right side inside the crushing chamber 1, and its right end is fixed to the wall of the crushing chamber 1. The second filter screen 13 is placed below the crushing device 16 and is inclined. It is connected to the screw device 5 through a lower transfer platform 54. Guardrails 14 are provided on both the left and right sides of the first filter screen 12 and the second filter screen 13. The intelligent opening and closing plate 18 includes an opening and closing plate 181 and a pressure sensor 182; the opening and closing plate 181 is located at the bottom of the crushing box 1, separating the crushing box 1 and the deacidification box 3; the pressure sensor 182 is placed in the middle of the opening and closing plate 181 and connected to the control panel 6. Acidic coal gangue enters the crushing box 1 and falls onto the first filter screen 12. Due to gravity, the first filter screen 12 and the second filter screen 13 vibrate, causing fine particles to pass through the screen and fall onto the opening and closing plate 181 via the guide plate 15. At the same time, large particles slide down the screen surface to the crushing device 16. The rotating shaft 162 drives the crushing teeth 161 to rotate and crush the acidic coal gangue. The crushed fine particles then fall onto the opening and closing plate 181 via the second filter screen 13. Once the pressure sensor 182 inside the opening and closing plate 181 senses that the total weight of the acidic coal gangue has reached the set limit, the control panel 6 controls the opening and closing plate 181 to open. The fine particles of acidic coal gangue fall into the deacidification box 3. The larger particles of acidic coal gangue that remain on the second filter screen 13 gather towards the right rear end along the inclined direction of the screen surface and enter the spiral device 5 via the lower transfer platform 54. They are then conveyed upwards and re-enter the crushing box 1.

[0030] like Figure 4As shown, the dust collection box 2 is equipped with a suction pipe 21, a suction net 22, a dust brush 23, a dust collection device 24, a dust scraper 25, and a dust outlet pipe 26. The suction pipe 21 is located at the top rear end of the dust collection box 2. The suction net 22 is installed in the middle of the dust collection box 2 and is inclined from top to bottom. The dust brush 23 is located at the top of the suction net 22. The dust collection device 24 is located in front of the suction net 22; the dust collection device 24 includes a rotating shaft 241 and blades 242. The dust scraper 25 is located on the left side of the dust collection box 2, with one side tightly against the suction net 22 and the other side tightly against the rear wall of the dust collection box 2. The dust outlet pipe 26 is located at the right rear end of the dust collection box 2 and connects to the acid removal box 3. After the dust collection equipment 24 is started, the dust and gas in the crushing box 1 are sucked into the dust collection box 2 through the suction pipe 21. The dust is intercepted on the surface of the suction net 22. When the dust on the surface of the suction net 22 reaches a certain level, the dust removal brush 23 brushes the dust on the suction net 22 from top to bottom to the bottom of the dust collection box 2. Then the dust removal brush 23 returns to its original position, and the dust scraper 25 concentrates the dust on the right side of the dust collection box 2. The dust is discharged into the acid removal box 3 through the dust outlet pipe 26, and the gas also enters the acid removal box 3 through the dust outlet pipe 26. Acidic coal gangue enters the crushing box 1 and is crushed in the crushing box 1, which will generate a large amount of dust and gas. Most of the gas can be dissolved in water solution. The dust can be treated for acid removal together with the crushed acidic coal gangue. Therefore, the dust collection box 2 in the device needs to be started before the coal gangue enters the crushing box 1, and the dust collection equipment 24 is always running during the entire operation.

[0031] like Figure 5As shown, the deacidification tank 3 is equipped with an inlet 31, a stirring device 32, an aeration device 33, a movable scraper 34, an outlet 35, a discharge outlet 36, a battery 37, a thermoelectric conversion device 38, and a heat pipe 39. The inlet 31 is located on the upper left side of the deacidification tank 3. The stirring device 32 is installed inside the deacidification tank 3; the stirring device 33 includes stirring blades 321, a stirring shaft 322, and a stirring motor 323; the right end of the stirring shaft 322 is connected to the stirring motor 323, and the left end is fixed to the deacidification tank 3. The aeration device 33 includes an air pump 331, an air inlet pipe 332, and vent holes 333; the air pump 331 is located on the outer left side of the deacidification tank 3 and is connected to the air inlet pipe 332; the air inlet pipe 332 enters the interior of the stirring shaft 322 from the left side; the vent holes 333 are evenly distributed on the stirring blades 321. The movable scraper 34 is located on the left side of the deacidification tank 3. The battery 37 and thermoelectric conversion device 38 are located on the rear side of the acid removal tank 3. The thermoelectric conversion device 38 is connected to the battery 37 on the left and a heat pipe 39 is connected to it on the right. The heat pipe 39 is installed on the rear right side inside the acid removal tank 3. The water outlet 35 is located behind the acid removal tank 3. The discharge port 36 is located on the lower right side of the acid removal tank 3. When acidic coal gangue crushed stone enters the acid removal tank 3, water is introduced through the water inlet 31, the stirring device 32 is started, and the aeration device 33 starts injecting oxygen. The stirring device 32 stops stirring after a certain period of time, and the mixture is left to stand for half an hour. Then the aeration device 33 stops, and the supernatant is discharged through the water outlet 35. The moving scraper 34 on the left side of the acid removal tank 3 is started, and the precipitated coal gangue is introduced into the neutralization tank 4 from the right side of the acid removal tank 3. The acid removal tank 3 only needs to be filled with water for the first use. In the acid removal box 3, acidic coal gangue undergoes an exothermic reaction with water and oxygen. The heat pipe 39 introduces the heat energy into the thermoelectric conversion device 38, which then converts the heat energy into electrical energy and stores it in the battery 37 to maintain the operation of the entire process.

[0032] like Figure 6 As shown, the neutralization tank 4 is equipped with a water inlet pipe 41, a feed pipe 42, an inclined plate 43, a filter screen 44, a discharge pipe 45, and a water outlet pipe 46. The water inlet pipe 41 is installed at the top right side of the neutralization tank 4. The feed pipe 42 is located above the right side of the neutralization tank 4. The inclined plate 43 is installed inside the neutralization tank 4, with its right end below the feed pipe 42, and its surface is uneven. The filter screen 44 is located on both the front and rear sides of the inclined plate 43. The discharge pipe 45 is located below the left side of the neutralization tank 4, and the water outlet pipe 46 is located below the discharge pipe 45. The coal gangue in the deacidification box 3 enters the neutralization box 4 through the feed pipe 42 and falls onto the inclined plate 43. Due to gravity, it slowly rolls down the inclined plate 43. At the same time, lime water enters through the water inlet pipe 41. The water flow washes the coal gangue on the inclined plate 43, removing the residual acidic liquid from the coal gangue. The waste liquid after washing falls to the bottom of the neutralization box 4 through the filter screen 44 and then flows out through the water outlet pipe 46. The neutralized coal gangue is discharged from the discharge pipe 45.

[0033] like Figure 3 As shown, the spiral device 5 includes a spiral blade 51, a rotating shaft 52, an upper transfer platform 53, and a lower transfer platform 54. The lower end of the spiral blade 51 is connected to the second filter screen 13 inside the crushing chamber 1 via the lower transfer platform 54, and the upper end of the spiral blade 51 is connected to the feed inlet 11 at the top of the crushing chamber 1 via the upper transfer platform 53. After the spiral device 5 is started, the acidic coal gangue remaining on the second filter screen 13 enters the spiral blade 51 through the lower transfer platform 54. Then, the rotating shaft 52 drives the spiral blade 53 to move upward and is re-transferred to the crushing chamber 1 for further crushing.

[0034] like Figure 3 As shown, the control panel 6 includes a display screen 61 and control buttons 62. The control panel is located at the rear lower part of the crushing chamber 1, above the battery 37. The display screen 61 is located above the control buttons 62. After the device is turned on by the switch 7, the operating status of each part of the device can be adjusted by using the control buttons 62, and the parameters of each part of the device can be set on the display screen 61 by using the control buttons 62, which remains constantly lit to display the operating status of each part of the device in real time.

[0035] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A device for the harmless treatment of acidic coal gangue, characterized in that: The device includes a crushing box (1), a dust removal box (2), an acid removal box (3), a neutralization box (4), a spiral device (5), a control panel (6), a switch (7), and base columns (8). The crushing box (1) is located at the upper rear of the harmless treatment device and is connected to the dust removal box (2) via a suction pipe (21). The dust removal box (2) is located directly in front of the crushing box (1). The acid removal box (3) is located below the crushing box (1), and the neutralization box (4) is located below the dust removal box (2). The spiral device (5) is located behind the crushing box (1). The control panel (6) is located at the lower rear of the crushing box (1). The switch (7) is located to the right of the control panel (6). The entire device is supported by four base columns (8).

2. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The crushing box (1) is equipped with a first filter screen (12), a second filter screen (13), a guardrail (14), a diversion plate (15), a crushing device (16), a connecting plate (17), and an intelligent opening and closing plate (18) inside the box. The top left of the crushing box (1) is provided with a feed inlet (11). The first filter screen (12) is located below the feed inlet (11) and is inclined. The left end of the first filter screen (12) is fixed to the box wall of the crushing box (1), and the right end is connected to the second filter screen (13) through the connecting plate (17). The diversion plate (15) is located below the first filter screen (12). The crushing device (16) includes crushing teeth (161), a rotating shaft (162), and a gear (163). The crushing device (16) is located inside the crushing box (1) on the right side, and its right end is fixed to the crushing box (1). The second filter screen (13) is placed below the crushing device (16). The second filter screen (13) is inclined and connected to the screw device (5) through the lower transfer platform (54). The intelligent opening and closing plate (18) includes an opening and closing plate (181) and a pressure sensor (182). The opening and closing plate (181) is located at the bottom of the crushing box (1) and separates the crushing box (1) from the acid removal box (3). The pressure sensor (182) is placed in the middle of the opening and closing plate (181) and connected to the control panel (6).

3. The acidic coal gangue harmless treatment device according to claim 2, characterized in that: The first filter screen (12) and the second filter screen (13) are both equipped with guardrails (14) on the left and right.

4. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The dust collection box (2) is equipped with a suction pipe (21), a suction net (22), a dust brush (23), a dust collection device (24), a dust scraper (25), and a dust outlet pipe (26). The suction pipe (21) is located at the top rear end of the dust collection box (2). The suction net (22) is installed in the middle of the dust collection box (2) and is inclined from top to bottom. The dust brush (23) is located at the top of the suction net (22). The dust collection device (24) is located in front of the suction net (22) and includes a rotating shaft (241) and blades (242). The dust scraper (25) is located on the left side of the dust collection box (2), with one side of the dust scraper (25) close to the suction net (22) and the other side close to the inner wall of the dust collection box (2). The dust outlet pipe (26) is located at the right rear end of the dust collection box (2) and is connected to the acid removal box (3).

5. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The deacidification tank (3) is equipped with an inlet (31), a stirring device (32), an aeration device (33), a movable scraper (34), an outlet (35), a discharge port (36), a battery (37), a thermoelectric conversion device (38), and a heat pipe (39); the inlet (31) is located on the upper left side of the deacidification tank (3); the stirring device (32) is installed inside the deacidification tank (3); the stirring device (32) includes a stirring blade (321), a stirring shaft (322), and a stirring motor (323); the right end of the stirring shaft (322) is connected to the stirring motor (323), and the left end is fixed to the deacidification tank (3); the aeration device (33) includes an air pump (331), an air inlet pipe (332), and a vent (333); The air pump (331) is located on the left side of the deacidification box (3) and connected to the air inlet pipe (332); the air inlet pipe (332) enters the interior of the stirring shaft (322) on the left side; the vent (333) is evenly distributed on the stirring blade (321); the moving scraper (34) is located on the left side of the deacidification box (3); the battery (37) and the thermoelectric conversion device (38) are located on the rear side of the exterior of the deacidification box (3), the thermoelectric conversion device (38) is connected to the battery (37) on the left side and connected to the heat conduction pipe (39) on the right side; the heat conduction pipe (39) is installed on the right rear side inside the deacidification box (3); the water outlet (35) is located behind the deacidification box (3); the discharge port (36) is located on the lower right side of the deacidification box (3).

6. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The neutralization box (4) is equipped with an inlet pipe (41), a feed pipe (42), an inclined plate (43), a filter screen (44), a discharge pipe (45), and a water outlet pipe (46). The inlet pipe (41) is installed at the top right side of the neutralization box (4). The feed pipe (42) is located above the right side of the neutralization box (4). The inclined plate (43) is installed inside the neutralization box (4), with its right end located below the feed pipe (42) and its surface uneven. The filter screen (44) is located on both the front and rear sides of the inclined plate (43). The discharge pipe (45) is located below the left side of the neutralization box (4), and the water outlet pipe (46) is located below the discharge pipe (45).

7. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The spiral device (5) includes a spiral blade (51), a rotating shaft (52), an upper transfer platform (53) and a lower transfer platform (54); the lower end of the spiral blade (51) is connected to the second filter screen (13) inside the crushing box (1) through the lower transfer platform (54), and the upper end of the spiral blade (51) is connected to the feed inlet (11) at the top of the crushing box (1) through the upper transfer platform (53).

8. The acidic coal gangue harmless treatment device according to claim 1, characterized in that: The control panel (6) includes a display screen (61) and control buttons (62).

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