Screening device for harmless treatment of aluminum ash

Abstract

The utility model discloses a screening device for harmless treatment of aluminum ash, and relates to the technical field of aluminum ash treatment. The device comprises a screening shell, a collecting assembly is arranged on the lower portion in the screening shell, and a dredging assembly is further arranged on the top of the screening shell. Baffles in the collecting assembly are fixedly connected to the front end and the rear end of the lower portion in the screening shell correspondingly, a magnetic suction plate is welded to the lower portion between every two adjacent baffles, and multiple sets of through holes are evenly formed in the surface of each magnetic suction plate. Metal iron in aluminum ash slag is recycled through a magnetic attraction plate and a through hole in the collecting assembly, a first lead screw drives a scraper to automatically discharge the metal iron, and the problem that in the prior art, screened metal iron cannot be automatically collected conveniently is solved; and a U-shaped frame and a lifting plate in the dredging assembly drive an air conveying pipe and a high-pressure spray head to move, and the blocked screen holes are dredged through the air conveying pipe and the high-pressure spray head, so that the problem that the screen holes are inconvenient to dredge in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum ash slag treatment, in particular to a screening device for harmless disposal of aluminum ash slag. Background Art

[0002] With the development of society, people's daily life and production now have more and more demands for aluminum products. In the process of aluminum smelting and forming, a variety of by-products are produced. Among them, aluminum ash slag is the main by-product of the aluminum industry, generally referred to as aluminum slag. In order to harmlessly treat aluminum ash slag, screening devices are usually used to recover some metal elements in aluminum ash slag.

[0003] The existing document with publication number CN220496904U discloses a screening device for harmless disposal of aluminum ash slag, including a screening device housing for harmless disposal of aluminum ash slag, a screening component is arranged inside the screening device housing, a detachable screen component is installed inside the screening component, and a collecting component is arranged at the bottom of the screening component; the screening component includes a transverse vibrating screen motor, a vibrating screen connecting rod, a vibrating plate, a device spring, a device roller, and a roller sliding plate, the end of the transverse vibrating screen motor is fixedly connected to the vibrating screen connecting rod, and the other end of the vibrating screen connecting rod is fixedly connected to the vibrating plate, and the side of the vibrating plate is elastically connected to the device spring, and the bottom of the vibrating plate is provided with a device roller;

[0004] However, it still has the following disadvantages in actual use:

[0005] 1. The above-mentioned screening device, whose collecting component includes a collecting box, a collecting box handle, an adsorption component and a device handle, is used to collect the screened aluminum ash slag through the collecting box, and the metal iron in the screened aluminum ash slag is adsorbed and recovered through the adsorption component, but it lacks a structure for scraping off the adsorbed metal iron, resulting in the need for the staff to manually remove the metal iron from the adsorption component;

[0006] 2. The above-mentioned screening device, whose screen assembly includes a device screen, a switch housing, a switch clip and a clip fixing groove, is used to screen the aluminum ash slag. However, during the screening process, part of the aluminum ash slag may be stuck in the sieve holes of the screen, and the above-mentioned screening device lacks a structure for clearing the device screen, thereby affecting the screening efficiency of the aluminum ash slag.

[0007] To this end, we provide a screening device for harmless disposal of aluminum ash slag to solve the above-mentioned problems. Utility Model Content

[0008] The utility model aims to provide a screening device for harmless disposal of aluminum ash slag, which recovers metal iron in the aluminum ash slag through the magnetic suction plate and the through hole in the collecting component, and automatically unloads the metal iron by driving the scraper through the first screw, thereby solving the existing problem that it is inconvenient to automatically collect the metal iron after screening, and drives the air pipe and the high-pressure nozzle to move through the U-shaped frame and the lifting plate in the dredging component, and dredges the blocked sieve holes through the air pipe and the high-pressure nozzle, thereby solving the existing problem that it is inconvenient to dredge the sieve holes.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a screening device for harmless disposal of aluminum ash slag, comprising a screening shell, a collecting component is arranged at the lower part of the inner part of the screening shell, and a dredging component is also arranged at the top of the screening shell;

[0011] The baffles in the collecting assembly are respectively fixedly connected to the front and rear ends of the lower part of the screening shell, and magnetic plates are welded below the adjacent baffles. A plurality of through holes are evenly arranged on the surface of the magnetic plates. A first screw rod is rotatably connected in the slide groove on the end surface of the baffle. A first slider is threadedly sleeved on the outer wall of the first screw rod. A scraper is welded between the adjacent first sliders, and the lower surface of the scraper rod is abutted and connected to the upper surface of the magnetic plate.

[0012] The U-shaped frame in the dredging assembly is movably connected to the top of the screening shell through a second screw rod, and an electric push rod is fixedly connected to the top of the U-shaped frame. A lifting plate is fixedly connected to the piston shaft of the electric push rod, and an air pipe is fixedly connected to the bottom of the lifting plate. Multiple groups of high-pressure nozzles are fixedly connected to the bottom of the air pipe at equal intervals along the longitudinal direction.

[0013] The utility model is further configured as follows: the front and rear ends of one side of the screening shell are fixedly connected to the first drive motor through the first motor frame, and the output shaft of the first drive motor is fixedly connected to one end of the first screw rod through a coupling.

[0014] The utility model is further configured as follows: a movable door is movably connected to the outer wall on the other side of the screening shell, and a handle is welded on the side of the movable door away from the screening shell.

[0015] The utility model is further configured as follows: first mounting seats are fixedly connected to the upper and lower parts of the outer wall on the other side of the screening shell, and sliding rods are fixedly connected between the upper and lower adjacent first mounting seats, and the sliding rods are movable through the front and rear ends of the surface of the movable door.

[0016] The utility model is further configured as follows: a screening frame is movably connected to the upper inner portion of the screening shell through a reset spring, screening holes are evenly provided on the inner bottom of the screening frame, a driving assembly is provided on one side of the screening frame, inner rods are welded to the front and rear ends of the outer wall on the other side of the screening frame, a sleeve rod is movably sleeved on the side of the inner rod away from the screening frame, one end of the sleeve rod away from the inner rod is fixedly connected to the inner wall of one side of the screening shell, and the inner rod and the sleeve rod are both located on the inner side of the reset spring.

[0017] The utility model is further configured as follows: the eccentric wheel in the driving assembly is rotatably connected to the inner wall on the other side of the screening shell, a collar is arranged between the eccentric wheel and the screening frame, fixing rods are welded on the front and rear end surfaces of the collar, one end of the fixing rod away from the collar is respectively fixedly connected to the front and rear end surfaces on the inner side of the screening shell, a driving rod is movablely sleeved inside the collar, connecting plates are welded on both ends of the driving rod, and one side of the connecting plate away from the connecting rod is respectively fixedly connected to the outer wall on one side of the screening frame and is abuttedly connected to one side of the eccentric wheel.

[0018] The utility model is further configured as follows: first bearing seats are fixedly connected above and below the inner wall on the other side of the screening shell, a rotating shaft is rotatably connected between the first bearing seats, an eccentric wheel is sleeved on the outer wall of the rotating shaft, a second drive motor is fixedly connected to the upper side of the outer wall on the other side of the screening shell through a second motor frame, a synchronous wheel is sleeved on the top of the rotating shaft and the output shaft of the second drive motor, and the synchronous wheels are transmission connected by a first belt.

[0019] The utility model is further configured as follows: second bearing seats are fixedly connected to both sides of the front and rear ends of the top of the screening shell, both ends of the second screw rod are rotatably connected to the inner side of the second bearing seat, one end of the second screw rod rotates through the second bearing seat located on one side and is sleeved with a single groove wheel, a second slider is threadedly sleeved on the outer wall of the second screw rod, the top of the second slider is respectively welded to the bottom of the vertical support arm of the U-shaped frame, a third drive motor is fixedly connected to one side of the top of the screening shell through a third motor frame, a double groove wheel is sleeved on the output shaft of the third drive motor, and the single groove wheel and the double groove wheel are connected by a second belt transmission.

[0020] The utility model is further configured as follows: the front and rear ends of the lower surface of the lifting plate are fixedly connected to the second mounting seat, the front and rear ends of the air pipe are sleeved on the inner side of the second mounting seat, one side of the air pipe is fixedly connected to the air intake pipe, and the end of the air intake pipe away from the air pipe is clamped inside the clamping seat located on the longitudinal support arm of the U-shaped frame.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model sets a collecting component, drives the first screw rod to rotate through the first driving motor, and under the action of the threaded connection between the first screw rod and the first slider, the first slider drives the scraper to move on the magnetic suction plate, and the metal iron adsorbed on the magnetic suction plate is automatically unloaded through the movement of the scraper, which is convenient for automatic collection of the screened metal iron and reduces the workload of the staff.

[0023] 2. The utility model sets a dredging component, drives the U-shaped frame and the high-pressure nozzle to move horizontally through the second screw rod and the second slider, and drives the high-pressure nozzle to move vertically through the electric push rod and the lifting plate. At the same time, air flow is provided to the high-pressure nozzle through the air pipe, and the air flow is finally sprayed into the screening frame at high speed, thereby realizing automatic dredging of the blocked sieve holes.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The overall structure diagram of a screening device for harmless disposal of aluminum ash slag is shown in FIG.

[0027] Figure 2 This is a schematic diagram of the structure of the movable door of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the collection component of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the scraper of the utility model;

[0030] Figure 5 This is a structural disassembly diagram of the screening frame of the utility model;

[0031] Figure 6 It is a structural schematic diagram of the drive assembly of the utility model;

[0032] Figure 7 It is a structural schematic diagram of the dredging component of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the gas transmission pipe of the utility model.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1-screening shell, 101-movable door, 101a-first mounting seat, 101b-slide rod, 102-handle, 2-collection assembly, 201-baffle, 201a-slide groove, 202-magnetic plate, 203-through hole, 204-first screw rod, 204a-first motor frame, 204b-first drive motor, 205-scraper, 205a-first slider, 3-screening frame, 301-reset spring, 302-sieve hole, 303-inner rod, 304-sleeve rod, 4-drive assembly, 401-eccentric wheel, 401a-first bearing seat, 401b-rotating shaft, 401c-synchronous wheel, 401d-first leather Belt, 402-ring, 402a-fixed rod, 403-driving rod, 404-connecting plate, 405-second driving motor, 405a-second motor frame, 5-dredging component, 501-U-shaped frame, 501a-second slider, 502-second screw rod, 502a-second bearing seat, 502b-single groove wheel, 502c-second belt, 503-electric push rod, 504-lifting plate, 505-air pipe, 505a-second mounting seat, 505b-card seat, 505c-intake pipe, 506-high-pressure nozzle, 507-third driving motor, 507a-third motor frame, 507b-double groove wheel. DETAILED DESCRIPTION

[0036] 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 of 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. Specific embodiment 1

[0038] See also Figure 1-6 As shown, it is the first embodiment of the utility model, which provides a screening device for harmless disposal of aluminum ash slag, including a screening shell 1 and a collecting assembly 2, and the collecting assembly 2 includes a baffle 201, a magnetic plate 202, a first screw 204 and a scraper 205. The magnetic plate 202 is used to recover the metallic iron in the aluminum ash slag, and the first screw 204 drives the scraper 205 to automatically collect the metallic iron adsorbed on the magnetic plate 202, thereby solving the existing problem that it is inconvenient to automatically collect the adsorbed metallic iron.

[0039] Specifically, the baffles 201 are fixedly connected to the front and rear ends at the lower part of the screening shell 1, and magnetic plates 202 are welded below the adjacent baffles 201. A plurality of through holes 203 are evenly arranged on the surface of the magnetic plate 202. A first screw rod 204 is rotatably connected in the slide groove 201a on the end face of the baffle 201. A first slider 205a is threadedly sleeved on the outer wall of the first screw rod 204. A scraper 205 is welded between the adjacent first sliders 205a. The lower surface of the scraper 205 is abutted and connected to the upper surface of the magnetic plate 202. The arrangement of the baffle 201, the magnetic plate 202 and the through holes 203 realizes secondary screening of the metal iron in the screened aluminum ash slag. The arrangement of the first screw rod 204 and the first slider 205a is used to drive the scraper 205 to move, and the metal iron adsorbed on the magnetic plate 202 is automatically collected by the arrangement of the scraper 205.

[0040] Further, the front and rear ends of one side of the screening shell 1 are fixedly connected to the first drive motor 204b through the first motor frame 204a, and the output shaft of the first drive motor 204b is fixedly connected to one end of the first screw rod 204 through a coupling. The first motor frame 204a is used to install the first drive motor 204b, and the first screw rod 204 is driven to rotate by the first drive motor 204b.

[0041] A movable door 101 is movably connected to the outer wall of the other side of the screening shell 1, and a handle 102 is welded on the side of the movable door 101 away from the screening shell 1. The setting of the movable door 101 is convenient for removing the metal iron adsorbed on the magnetic plate 202, and the setting of the handle 102 is convenient for applying external force to the movable door 101;

[0042] The upper and lower parts of the outer wall on the other side of the screening shell 1 are fixedly connected with first mounting seats 101a, and the upper and lower adjacent first mounting seats 101a are fixedly connected with sliding rods 101b, and the sliding rods 101b are respectively movably connected to the front and rear ends of the surface of the movable door 101. The first mounting seats 101a are used to install the sliding rods 101b, and the movable door 101 is movably installed vertically through the setting of the sliding rods 101b.

[0043] The upper part of the interior of the screening shell 1 is movably connected with a screening frame 3 through a reset spring 301, and screening holes 302 are evenly opened at the inner bottom of the screening frame 3. The front and rear ends of the outer wall of the other side of the screening frame 3 are welded with inner rods 303. A sleeve rod 304 is movably sleeved on the side of the inner rod 303 away from the screening frame 3. One end of the sleeve rod 304 away from the inner rod 303 is fixedly connected to the inner wall of one side of the screening shell 1. The inner rod 303 and the sleeve rod 304 are both located on the inner side of the reset spring 301. The screening frame 3 and the screening holes 302 are arranged to screen aluminum ash slag. The reset spring 301 is arranged to drive the screening frame 3 to automatically reset. The inner rod 303 and the sleeve rod 304 are arranged to movably install the screening frame 3 on the inner side of the screening shell 1 and limit the movement of the screening frame 3.

[0044] A driving assembly 4 is provided on one side of the screening frame 3, and an eccentric wheel 401 in the driving assembly 4 is rotatably connected to the inner wall of the other side of the screening shell 1. A collar 402 is provided between the eccentric wheel 401 and the screening frame 3, and a fixing rod 402a is welded on the front and rear end surfaces of the collar 402. One end of the fixing rod 402a away from the collar 402 is fixedly connected to the front and rear end surfaces of the inner side of the screening shell 1, and a driving rod 403 is movably sleeved inside the collar 402. Both ends of the driving rod 403 are welded with connecting plates 40 4, the side of the connecting plate 404 away from the connecting rod is respectively fixedly connected to the outer wall of one side of the screening frame 3 and abutted against the side of the eccentric wheel 401, the eccentric wheel 401 and the driving rod 403 are arranged to periodically apply external force to the screening frame 3, the setting of the collar 402 is used to install the driving rod 403, and the setting of the fixing rod 402a is used to install the collar 402, and the setting of the connecting plate 404 realizes the connection between the driving rod 403 and the screening frame 3 and the eccentric wheel 401;

[0045] A first bearing seat 401a is fixedly connected to the upper and lower parts of the inner wall on the other side of the screening shell 1, a rotating shaft 401b is rotatably connected between the first bearing seats 401a, and the eccentric wheel 401 is sleeved on the outer wall of the rotating shaft 401b. A second drive motor 405 is fixedly connected to the upper part of the outer wall on the other side of the screening shell 1 through a second motor frame 405a, a synchronous wheel 401c is sleeved on the top of the rotating shaft 401b and the output shaft of the second drive motor 405, and the synchronous wheels 401c are transmission connected to each other through a first belt 401d. The first bearing seat 401a and the rotating shaft 401b are arranged to rotatably install the eccentric wheel 401, and the synchronous wheel 401c and the first belt 401d are arranged to drive the eccentric wheel 401 to rotate, and the second drive motor 405 is arranged to drive the synchronous wheel 401c to rotate, and the second drive motor 405 is installed by the arrangement of the second motor frame 405a.

[0046] The operation process of this embodiment is as follows: put the aluminum ash slag into the screening frame 3, and start the second driving motor 405, the second driving motor 405 drives the eccentric wheel 401 to rotate, and periodically applies external force to the screening frame 3 through the eccentric wheel 401 and the driving rod 403, and at the same time cooperates with the action of the reset spring 301 to make the screening frame 3 vibrate on the inner side of the screening shell 1, and through the vibration of the screening shell 1, part of the material in the aluminum ash slag passes through the sieve hole 302 and falls onto the magnetic suction plate 202, and at the same time, under the action of gravity, the magnetic suction plate 202 The non-ferrous material falls into the lower inner side of the screening shell 1 through the through hole 203, and the metallic iron in the aluminum ash slag is adsorbed on the magnetic plate 202. Then the movable door 101 is opened and the first drive motor 204b is started. The first drive motor 204b drives the first screw rod 204 to rotate. At the same time, the threaded connection between the first screw rod 204 and the first slider 205a causes the first slider 205a to drive the scraper 205 to move on the magnetic plate 202, and the metallic iron adsorbed on the magnetic plate 202 is scraped off by the scraper 205. Specific embodiment 2

[0048] See also Figure 7-8 As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that a dredging component 5 is also arranged on the top of the screening shell 1, and the dredging component 5 includes a U-shaped frame 501, a lifting plate 504, an air pipe 505 and a high-pressure nozzle 506. The air pipe 505 and the high-pressure nozzle 506 are driven to move by the U-shaped frame 501 and the lifting plate 504, and a high-pressure airflow is provided into the screening frame 3 through the air pipe 505 and the high-pressure nozzle 506. The blocked sieve holes 302 are dredged with the help of the high-pressure airflow, thereby solving the existing problem of being inconvenient to dredge the blocked sieve holes 302.

[0049] Specifically, the U-shaped frame 501 is movably connected to the top of the screening shell 1 through the second screw rod 502, the top of the U-shaped frame 501 is fixedly connected to an electric push rod 503, the piston shaft of the electric push rod 503 is fixedly connected to a lifting plate 504, the lower part of the lifting plate 504 is fixedly connected to an air pipe 505, the bottom of the air pipe 505 is fixedly connected to multiple groups of high-pressure nozzles 506 at equal intervals along the longitudinal direction, the U-shaped frame 501 is used to install structures such as the electric push rod 503, the second screw rod 502 is used to drive the U-shaped frame 501 to move horizontally, the electric push rod 503 is used to drive the lifting plate 504 to move vertically, and at the same time, the air pipe 505 is driven to rise and fall through the lifting plate 504, and the air pipe 505 and the high-pressure nozzle 506 are used to provide high-pressure airflow to the screening frame 3, thereby clearing the blocked sieve holes 302.

[0050] Furthermore, both sides of the front and rear ends of the top of the screening shell 1 are fixedly connected with a second bearing seat 502a, both ends of the second screw rod 502 are rotatably connected to the inner side of the second bearing seat 502a, one end of the second screw rod 502 rotates through the second bearing seat 502a on one side and is sleeved with a single groove wheel 502b, the outer wall of the second screw rod 502 is threadedly sleeved with a second slider 501a, the top of the second slider 501a is respectively welded to the bottom of the vertical support arm of the U-shaped frame 501, and the top side of the screening shell 1 is fixedly connected with a third drive motor 507 through a third motor frame 507a, and a double groove wheel 507b is sleeved on the output shaft of the third drive motor 507, and the single groove wheel 502b and the double groove wheel 507 b is connected by a second belt 502c, the second bearing seat 502a is used to install the second screw rod 502, the single groove wheel 502b is used to drive the second screw rod 502 to rotate, and the second belt 502c and the double groove wheel 507b are used to drive the single groove wheel 502b to rotate, the third drive motor 507 is used to drive the double groove wheel 507b to rotate, the third motor frame 507a is used to install the third drive motor 507, and the second slider 501a is used to realize the threaded connection between the U-shaped frame 501 and the second screw rod 502, so that the rotation of the second screw rod 502 drives the U-shaped frame 501 to move horizontally;

[0051] The front and rear ends of the lower surface of the lifting plate 504 are fixedly connected to the second mounting seat 505a, and the front and rear ends of the air pipe 505 are both mounted on the inner side of the second mounting seat 505a. One side of the air pipe 505 is fixedly connected to the air intake pipe 505c, and the end of the air intake pipe 505c away from the air pipe 505 is clamped in the inside of the clamping seat 505b located on the longitudinal support arm of the U-shaped frame 501. The setting of the second mounting seat 505a realizes the installation of the air pipe 505, and the setting of the clamping seat 505b realizes the installation of the air intake pipe 505c. In addition, the setting of the air intake pipe 505c realizes the connection of the air pipe 505 to an external air compressor.

[0052] The rest of the structure is the same as implementation one.

[0053] The operation process of this embodiment is as follows: start the third drive motor 507, the third drive motor 507 drives the second screw rod 502 to rotate, and under the action of the threaded connection between the second screw rod 502 and the second slider 501a, the second slider 501a drives the U-shaped frame 501 to move horizontally, thereby driving the air pipe 505 and the high-pressure nozzle 506 to move horizontally, then start the electric push rod 503, the piston shaft of the electric push rod 503 drives the air pipe 505 and the high-pressure nozzle 506 to move vertically through the lifting plate 504, and the air pipe 505 is connected to an air compressor through the air inlet pipe 505c, and an air flow is provided into the air pipe 505 through the air compressor, and the air flow is finally sprayed onto the screening frame 3 through the high-pressure nozzle 506, and the blocked sieve holes 302 are cleared with the help of the high-pressure air flow.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A screening device for harmless disposal of aluminum ash slag, comprising a screening shell (1), characterized in that: A collecting assembly (2) is arranged at the lower part of the interior of the screening shell (1), and the baffles (201) in the collecting assembly (2) are respectively fixedly connected to the front and rear ends of the lower part of the interior of the screening shell (1), and magnetic plates (202) are welded below the adjacent baffles (201), and a plurality of groups of through holes (203) are evenly arranged on the surface of the magnetic plates (202), a first screw rod (204) is rotatably connected in the slide groove (201a) on the end surface of the baffle (201), and a first slider (205a) is threadedly sleeved on the outer wall of the first screw rod (204), a scraper (205) is welded between the adjacent first sliders (205a), and the lower surface of the scraper (205) is abutted against the upper surface of the magnetic plate (202); The top of the screening shell (1) is also provided with a dredging assembly (5), and a U-shaped frame (501) in the dredging assembly (5) is movably connected to the top of the screening shell (1) via a second screw rod (502), an electric push rod (503) is fixedly connected to the top of the U-shaped frame (501), and a lifting plate (504) is fixedly connected to the piston shaft of the electric push rod (503), an air supply pipe (505) is fixedly connected below the lifting plate (504), and a plurality of groups of high-pressure nozzles (506) are fixedly connected to the bottom of the air supply pipe (505) at equal intervals along the longitudinal direction.

2. A screening device for harmless disposal of aluminum ash slag according to claim 1, characterized in that: The front and rear ends of one side of the screening shell (1) are fixedly connected to a first drive motor (204b) via a first motor frame (204a), and the output shaft of the first drive motor (204b) is fixedly connected to one end of the first screw rod (204) via a coupling.

3. A screening device for harmless disposal of aluminum ash slag according to claim 2, characterized in that: A movable door (101) is movably connected to the outer wall of the other side of the screening shell (1), and a handle (102) is welded to the side of the movable door (101) away from the screening shell (1).

4. A screening device for harmless disposal of aluminum ash slag according to claim 3, characterized in that: The upper and lower parts of the outer wall on the other side of the screening shell (1) are fixedly connected to first mounting seats (101a), and sliding rods (101b) are fixedly connected between the upper and lower adjacent first mounting seats (101a), and the sliding rods (101b) are respectively movable and penetrate the front and rear ends of the surface of the movable door (101).

5. The screening device for harmless disposal of aluminum ash slag according to claim 1, characterized in that: The upper part of the interior of the screening shell (1) is movably connected to a screening frame (3) via a reset spring (301), and the inner bottom of the screening frame (3) is evenly provided with screening holes (302), a driving assembly (4) is provided on one side of the screening frame (3), and the front and rear ends of the outer wall of the other side of the screening frame (3) are welded with an inner rod (303), a sleeve rod (304) is movably sleeved on the side of the inner rod (303) away from the screening frame (3), and one end of the sleeve rod (304) away from the inner rod (303) is fixedly connected to the inner wall of one side of the screening shell (1), and the inner rod (303) and the sleeve rod (304) are both located on the inner side of the reset spring (301).

6. A screening device for harmless disposal of aluminum ash slag according to claim 5, characterized in that: The eccentric wheel (401) in the driving assembly (4) is rotatably connected to the inner wall of the other side of the screening shell (1), and a collar (402) is provided between the eccentric wheel (401) and the screening frame (3), and fixing rods (402a) are welded to the front and rear end surfaces of the collar (402), and one end of the fixing rod (402a) away from the collar (402) is fixedly connected to the front and rear end surfaces of the inner side of the screening shell (1), and a driving rod (403) is movably sleeved inside the collar (402), and connecting plates (404) are welded to both ends of the driving rod (403), and the side of the connecting plate (404) away from the connecting rod is fixedly connected to the outer wall of one side of the screening frame (3) and is abuttingly connected to one side of the eccentric wheel (401).

7. A screening device for harmless disposal of aluminum ash slag according to claim 6, characterized in that: A first bearing seat (401a) is fixedly connected to the upper and lower parts of the inner wall on the other side of the screening shell (1), and a rotating shaft (401b) is rotatably connected between the first bearing seats (401a); the eccentric wheel (401) is sleeved on the outer wall of the rotating shaft (401b), and a second drive motor (405) is fixedly connected to the upper part of the outer wall on the other side of the screening shell (1) via a second motor frame (405a); a synchronous wheel (401c) is sleeved on the top of the rotating shaft (401b) and the output shaft of the second drive motor (405), and the synchronous wheels (401c) are connected in transmission via a first belt (401d).

8. The screening device for harmless disposal of aluminum ash slag according to claim 1, characterized in that: The second bearing seats (502a) are fixedly connected to both sides of the front and rear ends of the top of the screening shell (1); both ends of the second screw rod (502) are rotatably connected to the inner side of the second bearing seat (502a); one end of the second screw rod (502) rotates through the second bearing seat (502a) located on one side and is sleeved with a single groove wheel (502b); a second slider (501a) is threadedly sleeved on the outer wall of the second screw rod (502); the top of the second slider (501a) is respectively welded to the bottom of the vertical support arm of the U-shaped frame (501); a third driving motor (507) is fixedly connected to one side of the top of the screening shell (1) through a third motor frame (507a); a double groove wheel (507b) is sleeved on the output shaft of the third driving motor (507); and the single groove wheel (502b) and the double groove wheel (507b) are connected by a second belt (502c) for transmission.

9. The screening device for harmless disposal of aluminum ash slag according to claim 1, characterized in that: The front and rear ends of the lower surface of the lifting plate (504) are fixedly connected to a second mounting seat (505a), the front and rear ends of the air pipe (505) are sleeved on the inner side of the second mounting seat (505a), and one side of the air pipe (505) is fixedly connected to an air intake pipe (505c), and one end of the air intake pipe (505c) away from the air pipe (505) is clamped inside a clamping seat (505b) located on the longitudinal arm of the U-shaped frame (501).

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