Harmless and resourceful treatment system for aluminum ash

Abstract

A harmless and resourceful treatment system for aluminum ash comprises a system body, a screening device is arranged in the system body and comprises a base, a feeding hopper is arranged at the top of one side of the base, two smashing rollers are rotationally installed in the feeding hopper, a cylinder cover is installed on the inner wall of one side of the base, and a plurality of smashing rollers are installed in the cylinder cover. A roller screen drum communicated with the feeding hopper is rotatably mounted on the periphery of the cylinder cover, a plurality of screening plates are arranged in the roller screen drum, a crushing driving mechanism matched with the two crushing rollers is arranged on one side of the feeding hopper, and the crushing driving mechanism is used for driving the two crushing rollers to rotate; according to the aluminum ash smashing and grinding device, aluminum ash is smashed and ground through the two smashing rollers, the ground aluminum ash enters the roller screen drum to be screened, the screened coarse aluminum ash is returned into the feeding hopper through the auger and the conveying pump to be smashed and ground again, and in the subsequent harmless treatment process, due to the fact that the aluminum ash is in a fine state, the aluminum ash reaction time can be shortened; the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste resource treatment, in particular to a harmless and resource treatment system for aluminum ash. Background Art

[0002] According to statistics, about 30-50kg of aluminum ash is emitted for every ton of aluminum produced and cast.

[0003] The environmental hazards of aluminum ash are mainly reflected in the following three points: ① The fluoride leaching toxicity in secondary aluminum ash exceeds the standard of "Hazardous Waste Identification Standard Leaching Toxicity Identification", and the corrosiveness is relatively high, and some of it will exceed the standard of "Hazardous Waste Identification Standard Corrosiveness Identification". Direct storage will lead to an increase in the pH value of surrounding groundwater and soil, and cause fluorine pollution; ② Secondary aluminum ash contains aluminum nitride, metallic aluminum, aluminum carbide, etc., which will release a large amount of ammonia when in contact with water, and produce hydrogen, methane, and other flammable and explosive gases, polluting the atmospheric environment, posing a safety hazard; ③ Secondary aluminum ash contains a large amount of soluble salts, and the dissolved, seeped and accumulated salts will lead to soil salinization and water pollution.

[0004] Therefore, the aluminum ash needs to be treated harmlessly. However, when treating the aluminum ash, the size of the aluminum ash is different, the coarse aluminum ash takes a long time to treat, and the reaction efficiency is low. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a harmless and resourceful treatment system for aluminum ash, which effectively solves the problems of different sizes of aluminum ash, long treatment time of coarse aluminum ash and low reaction efficiency when treating aluminum ash.

[0006] The technical solution is a harmless and resourceful treatment system for aluminum ash, including a system body;

[0007] The system body is provided with a screening device, which includes a base, a feed hopper is provided on the top of one side of the base, two crushing rollers are rotatably installed inside the feed hopper, a cylindrical cover is installed on the inner wall of one side of the base, a rolling screen cylinder connected to the feed hopper is rotatably installed on the outer periphery of the cylindrical cover, and a plurality of screening plates are provided inside the rolling screen cylinder;

[0008] A pulverizing drive mechanism matched with two pulverizing rollers is provided on one side of the feed hopper, and the pulverizing drive mechanism is used to drive the two pulverizing rollers to rotate;

[0009] A conveying mechanism that cooperates with the roller screen cylinder is rotatably provided on one side of the cylindrical cover, and the conveying mechanism is used to convey the coarse aluminum ash;

[0010] A screening drive mechanism is provided on one side of the base, and the screening drive mechanism is used to drive the rolling screen drum and the conveying mechanism to rotate;

[0011] The conveying mechanism is connected to the feed hopper through a pumping mechanism, and the pumping mechanism is used to return the coarse aluminum ash to the feed hopper for crushing.

[0012] Preferably, the pulverizing drive mechanism comprises two mutually meshing gears, the two gears are respectively mounted on one side of two pulverizing rollers, a stepper motor is mounted on one side of the feed hopper, and an output end of the stepper motor is connected to one of the pulverizing rollers.

[0013] Preferably, the screening drive mechanism includes a planetary gear assembly rotatably mounted on the inner wall of one side of the base, one side of the planetary gear assembly is mounted on one side of the rolling screen cylinder, a drive motor is mounted on one side of the base, and the output end of the drive motor is matched and connected to the planetary gear assembly.

[0014] Preferably, the conveying mechanism includes a semi-open straight cylinder installed on one side of the cylindrical cover, a material drop port is opened on the top of the semi-open straight cylinder, an auger is rotatably installed in the semi-open straight cylinder, one side of the auger is rotatably connected to one side of the rolling screen cylinder, and one side of the auger is connected to the planetary gear assembly.

[0015] Preferably, the pumping mechanism comprises a delivery pump installed on one side of the base, the input end of the delivery pump is connected to the semi-open straight cylinder through a first conduit, and the output end of the delivery pump is connected to the feed hopper through a second conduit.

[0016] Preferably, a funnel cooperating with the roller screen drum is installed at the inner bottom end of the base, a discharge pipe is installed at the bottom of the funnel, and the discharge pipe is connected to the system body through a pipeline.

[0017] Preferably, a brush roller is installed on one side of the base, and the brush roller is in abutment with the rolling screen cylinder.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model crushes and grinds aluminum ash by two crushing rollers, and the ground aluminum ash enters the rolling screen drum for screening, and the screened coarse aluminum ash is returned to the feed hopper through the auger and the conveying pump to be crushed and ground again. In the subsequent harmless treatment, the aluminum ash is in a fine state, thereby reducing the reaction time of the aluminum ash and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a first-view structural schematic diagram of the aluminum ash harmless and resource processing system of the utility model.

[0021] Figure 2 It is a schematic structural diagram of the screening device of the utility model from the first perspective.

[0022] Figure 3 This utility model Figure 2 Schematic diagram of the explosion structure.

[0023] Figure 4 It is a structural schematic diagram of the base of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the conveying mechanism of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the roller screen drum of the utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the pumping mechanism of the utility model.

[0027] Explanation of the symbols in the schematic diagram:

[0028] 1. System body;

[0029] 2. Screening device;

[0030] 3. Base; 31. Funnel; 32. Discharge pipe; 33. Brush roller;

[0031] 4. Feed hopper; 41. Crushing roller; 42. Gear; 43. Stepping motor;

[0032] 5. Roller screen; 51. Screening plate;

[0033] 6. Dropping port; 61. Semi-open straight tube; 62. Auger;

[0034] 7. Cylinder cover;

[0035] 8. Planetary gear assembly; 81. Driving motor;

[0036] 9. Delivery pump; 91. First conduit; 92. Second conduit. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Depend on Figures 1 to 3A harmless and resourceful treatment system for aluminum ash is provided, comprising a system body 1, a screening device 2 is arranged at the front end of the system body 1, the screening device 2 comprises a base 3, a feed hopper 4, two crushing rollers 41, a crushing drive mechanism, a cylindrical cover 7, a rolling screen 5, a screening plate 51, a screening drive mechanism, a conveying mechanism and a pumping mechanism.

[0039] Depend on Figures 2 to 4 It is given that the base 3 serves as a supporting structure and can be set on the ground, platform, etc.; the feed hopper 4 is installed on the top of one side of the base 3, and the bottom of the feed hopper 4 is funnel-shaped to facilitate the falling of aluminum ash; the two crushing rollers 41 are rotatably installed inside the feed hopper 4. More specifically, the outer walls of the two crushing rollers 41 are provided with grinding protrusions, and the aluminum ash falls from between the two crushing rollers 41. The two crushing rollers 41 crush and grind the aluminum ash inside the feed hopper 4 through the grinding protrusions, and then grind the coarse aluminum ash into fine aluminum ash.

[0040] Depend on Figure 3 and Figure 5 It is given and further explained that the crushing driving mechanism is installed on one side of the feed hopper 4 , and the crushing driving mechanism includes two gears 42 and a stepping motor 43 .

[0041] Specifically, two gears 42 are respectively installed on one side of two crushing rollers 41, and the two gears 42 are meshed with each other. The stepper motor 43 is installed on the outer wall of the feed hopper 4 on the side away from the gears 42, and the output end of the stepper motor 43 is installed together with one of the crushing rollers 41; the principle is explained that the stepper motor 43 drives one crushing roller 41 to rotate, and the crushing roller 41 cooperates with the two gears 42 to make the other crushing roller 41 also rotate, and the two crushing rollers 41 rotate in opposite directions. Both crushing rollers 41 rotate inward, thereby crushing and grinding the aluminum ash and transporting it to the bottom of the feed hopper 4.

[0042] Depend on Figure 3 and Figure 6 It is given and then explained that the cylindrical cover 7 is installed on the inner wall of the base 3 close to the feed hopper 4, and one side of the rolling screen drum 5 is rotatably installed on the outer wall of the cylindrical cover 7. A slot is provided on one side of the cylindrical cover 7, and a discharge port at the bottom end of the feed hopper 4 is connected with the rolling screen drum 5 through the slot, so that the aluminum ash crushed and ground by the feed hopper 4 falls into the rolling screen drum 5 from the discharge port, and four screening plates 51 are provided, and the four screening plates 51 are arranged in the rolling screen drum 5.

[0043] As described in detail, sieve holes are provided on the circumferential array around the outer wall of the rolling screen drum 5 and the surface of the screening plate 51. The diameter of the sieve holes is very small, and fine aluminum ash leaks through the sieve holes for screening. More preferably, a brush roller 33 is installed on one side of the base 3, and a brush is provided on the outer wall of the brush roller 33. The brush cooperates with the rolling screen drum 5, and the brush cleans the sieve holes to prevent the sieve holes from being blocked by aluminum ash.

[0044] It should also be noted that a funnel 31 is installed at the bottom end of the base 3, and a discharge pipe 32 is installed at the bottom of the funnel 31. The system body 1 also includes a reactor system, and a conveying device is installed on the reactor system. The discharge pipe 32 is connected to the conveying device through a pipeline, and the fine aluminum ash in the discharge pipe 32 is transported to the reactor system through the conveying device for alkaline solution reaction treatment. As described in the process, the fine aluminum ash screened by the roller screen 5 falls into the funnel 31, and then enters the reactor system through the discharge pipe 32 for treatment.

[0045] It is also explained that the screening drive mechanism is installed on the inner wall of one side of the base 3 , and the screening drive mechanism includes a planetary gear assembly 8 and a drive motor 81 .

[0046] In detail, the planetary gear assembly 8 is installed on one side of the base 3, and the planetary gear assembly 8 includes a sun gear, three planetary gears and an inner ring gear;

[0047] More specifically, the conveying mechanism is installed on one side of the cylinder cover 7, the sun gear is rotatably installed on one side of the conveying mechanism, the three planetary gears are rotatably installed on the inner wall of the base 3, and the three planetary gears are meshed with the sun gear, the inner ring gear is installed on one side of the rolling screen drum 5, and the inner ring gear is meshed with the three planetary gears; the drive motor 81 is installed on the outer wall of the base 3, and the output end of the drive motor 81 is connected to the sun gear, and the drive motor 81 causes the rolling screen drum 5 and the conveying mechanism to rotate simultaneously through the sun gear, the planetary gears and the inner ring gear.

[0048] The transmission process is described as follows: the drive motor 81 drives the sun gear to rotate, and the sun gear drives the conveying mechanism to rotate; and the sun gear drives the three planetary gears to rotate, and the three planetary gears drive the inner gear ring to rotate, and the inner gear ring drives the roller screen drum 5 to rotate.

[0049] Depend on Figures 5 to 7 It is given that, secondly, the conveying mechanism includes a semi-open straight cylinder 61, a drop port 6 and a auger 62.

[0050] Specifically, the semi-open straight cylinder 61 is installed through the central axis of the cylinder cover 7, and the blanking port 6 is opened in the rear half of the top of the semi-open straight cylinder 61. As shown in the function, the sieve holes on the screening plate 51 screen out the fine aluminum ash, and the coarse aluminum ash remains on the upper surface of the screening plate 51. The screening plate 51 will rotate into an inclined state with the rolling screen cylinder 5, and the coarse aluminum ash will slide down from the inclined surface and enter the semi-open straight cylinder 61 through the blanking port 6.

[0051] It is also explained that the auger 62 is rotatably installed in the semi-open straight cylinder 61, and the side of the auger 62 away from the cylindrical cover 7 is rotatably connected to the side of the roller screen cylinder 5, and the side of the auger 62 that passes through the outside of the roller screen cylinder 5 is connected to the sun gear; the function is explained that the sun gear drives the auger 62 to rotate, and the coarse aluminum ash in the semi-open straight cylinder 61 is transported outward during the rotation of the auger 62.

[0052] Depend on Figure 3 and Figure 7 Finally, the pumping mechanism is installed on one side of the base 3 , and the pumping mechanism includes a delivery pump 9 , a first conduit 91 and a second conduit 92 .

[0053] Specifically, the conveying pump 9 is installed on one side of the base 3, the first conduit 91 is installed on one side of the semi-open straight cylinder 61, and the other side of the first conduit 91 is installed at the input end of the conveying pump 9, the second conduit 92 is installed at the output end of the conveying pump 9, and the output port of the second conduit 92 is set directly above the feed hopper 4; the working process is described, the conveying pump 9 is started, and the crude aluminum ash conveyed by the auger 62 is transported to the top of the feed hopper 4 through the first conduit 91 and the second conduit 92, so that the crude aluminum ash returns to the feed hopper 4 for re-crushing and grinding.

[0054] Secondly, in this embodiment, in order to prevent the crude aluminum ash from being lifted up, a cover plate is sealed on the top of the feed hopper 4, and the end of the second conduit 92 away from the conveying pump 9 passes through the cover plate to extend into the feed hopper 4; in this way, through the setting of the cover plate, it is possible to prevent the second conduit 92 from being lifted up when conveying the crude aluminum ash into the feed hopper 4, so that the crude aluminum ash can be uniformly entered into the feed hopper 4 for re-grinding.

[0055] The beneficial effects obtained by the base 3, the feed hopper 4, the two crushing rollers 41, the crushing drive mechanism, the cylindrical cover 7, the roller screen 5, the screening plate 51, the screening drive mechanism, the conveying mechanism and the pumping mechanism are as follows: the aluminum ash is crushed and ground by the two crushing rollers 41, the ground aluminum ash enters the roller screen 5 for screening, and the screened coarse aluminum ash is returned to the feed hopper 4 through the auger 62 and the conveying pump 9 for crushing and grinding again. During the subsequent harmless treatment, the aluminum ash is in a fine state, thereby reducing the reaction time of the aluminum ash and improving the work efficiency. During the harmless treatment, the aluminum ash is in a fine state, thereby reducing the reaction time of the aluminum ash and improving the work efficiency.

[0056] When the utility model is used, aluminum ash is poured into the feed hopper 4, and the stepper motor 43 drives the two crushing rollers 41 to rotate through the two gears 42, and the two crushing rollers 41 crush and grind the aluminum ash;

[0057] Then, the aluminum ash is crushed and ground and falls into the roller screen drum 5. The driving motor 81 drives the roller screen drum 5 to rotate through the sun gear, planetary gears and inner ring gear. The fine aluminum ash passes through the sieve holes around the outer wall of the roller screen drum 5 and falls into the funnel 31. Then, the fine aluminum ash enters the reactor system through the discharge pipe 32 for alkali solution treatment.

[0058] While the rolling screen drum 5 rotates, the sieve holes on the screening plate 51 screen out the fine aluminum ash, and the coarse aluminum ash remains on the upper surface of the screening plate 51. The screening plate 51 will rotate into an inclined state along with the rolling screen drum 5, and the coarse aluminum ash will slide down from the inclined surface and enter the semi-open straight cylinder 61 through the drop-out port 6; the sun gear drives the auger 62 to rotate, and the coarse aluminum ash in the semi-open straight cylinder 61 is transported outward during the rotation of the auger 62; the delivery pump 9 is started to transport the coarse aluminum ash transported by the auger 62 to the top of the feed hopper 4 through the first conduit 91 and the second conduit 92, so that the coarse aluminum ash returns to the feed hopper 4 for re-crushing and grinding.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for harmless and resourceful treatment of aluminum ash, characterized in that: The system comprises a system body (1); A screening device (2) is arranged in the system body (1), and the screening device (2) comprises a base (3), a feed hopper (4) is arranged on the top of one side of the base (3), two crushing rollers (41) are rotatably mounted inside the feed hopper (4), a cylindrical cover (7) is installed on the inner wall of one side of the base (3), a rolling screen drum (5) connected to the feed hopper (4) is rotatably mounted on the outer periphery of the cylindrical cover (7), and a plurality of screening plates (51) are arranged inside the rolling screen drum (5); A pulverizing drive mechanism matched with two pulverizing rollers (41) is provided on one side of the feed hopper (4), and the pulverizing drive mechanism is used to drive the two pulverizing rollers (41) to rotate; A conveying mechanism that cooperates with the roller screen cylinder (5) is rotatably provided on one side of the cylindrical cover (7), and the conveying mechanism is used to convey the coarse aluminum ash; A screening drive mechanism is provided on one side of the base (3), and the screening drive mechanism is used to drive the rolling screen drum (5) and the conveying mechanism to rotate; The conveying mechanism is connected to the feed hopper (4) via a pumping mechanism, and the pumping mechanism is used to return the coarse aluminum ash to the feed hopper (4) for crushing.

2. The aluminum ash harmless and resourceful treatment system according to claim 1 is characterized in that: The pulverizing drive mechanism comprises two mutually meshing gears (42), the two gears (42) being respectively mounted on one side of two pulverizing rollers (41), a stepping motor (43) being mounted on one side of the feed hopper (4), and an output end of the stepping motor (43) being connected to one of the pulverizing rollers (41).

3. The aluminum ash harmless and resourceful treatment system according to claim 1 is characterized in that: The screening drive mechanism comprises a planetary gear assembly (8) rotatably mounted on an inner wall of one side of a base (3), one side of the planetary gear assembly (8) being mounted on one side of a rolling screen drum (5), and a drive motor (81) being mounted on one side of the base (3), the output end of the drive motor (81) being matched and connected to the planetary gear assembly (8).

4. The harmless and resourceful treatment system for aluminum ash according to claim 3 is characterized in that: The conveying mechanism comprises a semi-open straight cylinder (61) installed on one side of the cylindrical cover (7), a material drop opening (6) is provided on the top of the semi-open straight cylinder (61), an auger (62) is rotatably installed in the semi-open straight cylinder (61), one side of the auger (62) is rotatably connected to one side of the rolling screen cylinder (5), and one side of the auger (62) is connected to a planetary gear assembly (8).

5. The harmless and resourceful treatment system for aluminum ash according to claim 4 is characterized in that: The pumping mechanism comprises a delivery pump (9) installed on one side of the base (3); the input end of the delivery pump (9) is connected to the semi-open straight cylinder (61) through a first conduit (91); and the output end of the delivery pump (9) is connected to the feed hopper (4) through a second conduit (92).

6. The aluminum ash harmless and resourceful treatment system according to claim 1 is characterized in that: A funnel (31) matching with the roller screen drum (5) is installed at the inner bottom end of the base (3), and a discharge pipe (32) is installed at the bottom of the funnel (31), and the discharge pipe (32) is connected to the system body (1) through a pipeline.

7. The aluminum ash harmless and resourceful treatment system according to claim 1 is characterized in that: A brush roller (33) is installed on one side of the base (3), and the brush roller (33) is in abutment with the rolling screen cylinder (5).

Images