Multi-stage impurity removal device for secondary aluminum

Abstract

The utility model provides a secondary aluminum multistage impurity removal device, which relates to the field of secondary aluminum impurity removal and comprises a collecting box, a conveying belt and a permanent magnet rotor used for screening metal raw materials, the collecting box is arranged below the discharging end of the conveying belt, and the permanent magnet rotor is rotatably connected to the inner side of the conveying belt. The conveying device is characterized in that air boxes are fixedly connected to the side walls of the protective plates on the two sides of the conveying belt, a plurality of fans are fixedly connected into air channels on the inner sides of the air boxes, air inlets are formed in the sides, facing the conveying belt, of the air boxes, the air channel height of air outlet sections of air outlets in the air boxes is smaller than that of air channel bodies of the air boxes, and the air blowing direction of the air outlets is obliquely above the conveying belt; the air bellow is used for blowing light aluminum sheets or aluminum foils ejected by the permanent magnet rotor into the collecting box to be collected, so that aluminum materials such as the aluminum sheets or the aluminum foils which are not easy to collect can also be collected, the waste of the aluminum materials is reduced, and the utilization rate of waste aluminum is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycled aluminum impurity removal technology, specifically a multi-stage impurity removal device for recycled aluminum. Background Technology

[0002] Recycled aluminum, also known as "secondary aluminum," is aluminum obtained by smelting scrap aluminum parts and scrap aluminum materials. The main raw materials for smelting recycled aluminum are industrial depreciation scrap aluminum parts (such as aircraft scrap parts, engines, and casing covers) and scrap aluminum materials generated during aluminum processing (including plates, pipes, rods, profiles, scraps, foils, etc.).

[0003] Existing multi-stage impurity removal devices for recycled aluminum typically use magnetic force to separate magnetic metals such as iron. The screened raw material is then conveyed to an aluminum jumping machine, which uses the eddy current repulsion force generated by the alternating magnetic field to separate aluminum from other non-magnetic metals (such as copper, zinc, and magnesium) and non-metallic impurities (plastics, rubber, etc.). Although the aluminum jumping machine can separate non-metallic impurities from aluminum materials, it cannot fully screen thinner aluminum sheets or foils. Because aluminum sheets or foils are small in size or light in weight, they do not bounce far enough when passing through the permanent magnet rotor. They tend to bounce up and fall onto the conveyor belt, tumbling instead of falling into the aluminum bin. If not collected, this results in a waste of aluminum. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-stage waste removal device for recycled aluminum. By using a bellows, lightweight aluminum sheets or foils that have been lifted by a permanent magnet rotor are blown into a collection box for collection. This allows aluminum materials that are difficult to collect, such as aluminum sheets or foils, to be collected, thereby reducing aluminum waste and improving the utilization rate of waste aluminum.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-stage impurity removal device for recycled aluminum, comprising a collection box, a conveyor belt, and a permanent magnet rotor for screening metal raw materials. The collection box is located below the discharge end of the conveyor belt, and the permanent magnet rotor is rotatably connected to the inner side of the conveyor belt. The device is characterized in that: air boxes are fixedly connected to the side walls of the guard plates on both sides of the conveyor belt, and several fans are fixedly connected to the air ducts inside the air boxes. An air inlet is provided on the side of the air box facing the conveyor belt. The height of the air duct of the air outlet section on the air box is less than the height of the air duct of the air box body, and the blowing direction of the air outlet is obliquely above the conveyor belt.

[0007] Furthermore, the distance between the lower surface of the air outlet section of the bellows and the upper surface of the conveyor belt is greater than the height of the crushed raw material.

[0008] Furthermore, the airflow direction of the air outlet is within the air intake range of the air inlet.

[0009] Furthermore, guide plates are fixedly connected to the side walls of the guard plates on both sides of the conveyor belt, and the other end of the guide plate is fixedly connected to the edge of the opening end of the air inlet.

[0010] Furthermore, a filter screen is installed inside the air inlet, and the outer wall of the filter screen protrudes outside the air inlet of the air box.

[0011] Furthermore, the outer wall of the filter screen abuts against the scraper, and the rotation axis of the scraper is fixedly connected to the drive shaft of the servo motor.

[0012] Furthermore, as the scraper rotates, its rotational cleaning trajectory covers the entire filter screen.

[0013] Furthermore, a support plate is fixedly connected to one end of the side guards of the conveyor belt near the air box, and the other end of the support plate is fixedly connected to the outer wall of the air box.

[0014] The beneficial effects of this utility model are as follows:

[0015] The bellows, designed to blow air above the conveyor belt and permanent magnet, can propel lightweight materials like aluminum sheets or foils forward when their bounce distance is insufficient. This increases the bounce distance, allowing the materials to fall into the collection box and reduce waste, thus improving utilization. Furthermore, by positioning the bellows' inlet opposite the outlet, the materials float upwards towards the collection box during air intake, enhancing collection efficiency. Finally, a scraper removes any aluminum sheets or foils adsorbed on the filter screen at the inlet, maintaining ventilation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the bellows structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the scraper structure of this utility model.

[0020] The components include: 1. Collection box; 2. Conveyor belt; 3. Permanent magnet rotor; 4. Air box; 5. Fan; 6. Air inlet; 7. Air outlet; 8. Guide plate; 9. Filter screen; 10. Scraper; 11. Servo motor; and 12. Support plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figures 1-4 A multi-stage impurity removal device for recycled aluminum includes a collection box 1, a conveyor belt 2, and a permanent magnet rotor 3 for screening metal raw materials. The collection box 1 is located below the discharge end of the conveyor belt 2. The permanent magnet rotor 3 is rotatably connected to the inner side of the conveyor belt 2. A wind box 4 is fixedly connected to the side wall of the guard plate on both sides of the conveyor belt 2. Several fans 5 are fixedly connected in the air duct inside the wind box 4. An air inlet 6 is provided on the side of the wind box 4 facing the conveyor belt 2. The height of the air duct of the air outlet 7 on the wind box 4 is less than the height of the air duct of the main body of the wind box 4, and the blowing direction of the air outlet 7 is diagonally above the conveyor belt 2.

[0023] In this scheme: the air blower 4 blows air above the conveyor belt 2 and the permanent magnet. When the aluminum sheets or foils are lightweight and have insufficient bounce distance, the air blown by the air blower 4 can blow these bounced materials forward, increasing the bounce distance of the aluminum sheets or foils, so that the aluminum sheets or foils can also fall into the collection box 1 for collection, thereby reducing material waste and improving material utilization. Since the air outlet 7 has a low air duct height, the air blown from the air outlet 7 in the air blower 4 body is accelerated when it passes through the air outlet 7, thereby increasing the air force blowing the aluminum sheets or foils from the air outlet 7. At the same time, by setting the blowing direction of the air outlet 7 to be diagonally above the conveyor belt 2, the aluminum sheets or foils can be blown diagonally upward when the air blows on them, increasing the bounce distance of the aluminum sheets or foils, so that the aluminum sheets or foils can be stably collected into the collection box 1.

[0024] The distance between the lower surface of the air outlet section of the air box 4 and the upper surface of the conveyor belt 2 is greater than the height of the crushed raw material.

[0025] In this embodiment, the lower surface of the air outlet section of the air box 4 is kept at a certain distance from the upper surface of the conveyor belt 2, which can prevent the air box 4 from blocking the raw materials on the conveyor belt 2, so that the raw materials can be transported forward stably.

[0026] The airflow direction of the air outlet 7 is within the air intake range of the air inlet 6.

[0027] In this embodiment: when the air outlet 7 blows the aluminum sheet or aluminum foil forward to bounce or float, the bouncing or floating aluminum sheet or aluminum foil can float along with the air flowing towards the air inlet 6, so that the aluminum sheet or aluminum foil can move above the collection box 1, thereby increasing the bouncing distance of the aluminum sheet or aluminum foil, which in turn facilitates the collection of the aluminum sheet or aluminum foil.

[0028] Guide plates 8 are fixedly connected to the side walls of the guard plates on both sides of the conveyor belt 2, and the other end of the guide plate 8 is fixedly connected to the edge of the opening end of the air inlet 6.

[0029] In this embodiment, the guide plate 8 can guide the aluminum sheets or foils blown by the air outlet 7 towards the top of the collection box 1, preventing the aluminum sheets or foils from falling to the outside of the collection box 1, thereby facilitating the centralized collection of raw materials such as aluminum sheets or foils.

[0030] A filter screen 9 is installed inside the air inlet 6, and the outer wall of the filter screen 9 protrudes outside the air inlet 6 of the air box 4.

[0031] In this embodiment, the filter screen 9 can filter aluminum sheets or aluminum foil that fall into the air inlet 6, preventing the aluminum sheets or aluminum foil from entering the air box 4 and being discharged again from the air outlet 7, making it easier to collect the raw materials such as aluminum sheets or aluminum foil.

[0032] The outer wall of the filter screen 9 abuts against the scraper 10, and the rotation axis of the scraper 10 is fixedly connected to the drive shaft of the servo motor 11.

[0033] In this embodiment, the scraper 10 can rotate under the drive of the servo motor 11. When the scraper 10 rotates on the filter screen 9, it can scrape the aluminum sheets or aluminum foil adsorbed on the filter screen 9 into the collection box 1. It can clean the filter screen 9 and prevent the filter screen 9 from clogging while guiding the aluminum sheets or aluminum foil into the collection box 1 for collection. It should be noted that the side of the scraper 10 that is attached to the filter screen 9 is a set of one or more sets of rubber plates, so that the scraper 10 has a certain friction force, thereby better scraping the aluminum sheets or aluminum foil off the filter screen 9.

[0034] When the scraper 10 rotates, the rotation cleaning trajectory of the scraper 10 covers the entire filter screen 9.

[0035] In this embodiment, the scraper 10 can clean the entire filter screen 9 when it rotates, preventing cleaning dead corners from being created when cleaning the filter screen 9 and maintaining the ventilation effect of the filter screen 9.

[0036] Support plates 12 are fixedly connected to one end of the side guards of the conveyor belt 2 near the air box 4, and the other end of the support plates 12 is fixedly connected to the outer wall of the air box 4.

[0037] In this embodiment, the support plate 12 can be supported on one side of the air inlet 6 of the air box 4, so that both ends of the air box 4 can be effectively fixed and supported, thereby improving the overall stability of the air box 4.

[0038] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage impurity removal device for recycled aluminum, comprising a collection box (1), a conveyor belt (2), and a permanent magnet rotor (3) for screening metal raw materials, wherein the collection box (1) is disposed below the discharge end of the conveyor belt (2), and the permanent magnet rotor (3) is rotatably connected to the inner side of the conveyor belt (2), characterized in that: The wind box (4) is fixedly connected to the side walls of the guard plates on both sides of the conveying belt (2), a plurality of air fans (5) are fixedly connected to the air ducts on the inner side of the wind box (4), the wind box (4) is provided with an air inlet (6) on the side facing the conveying belt (2), the height of the air duct of the air outlet (7) of the air outlet section of the wind box (4) is less than the height of the air duct of the main body of the wind box (4), and the blowing direction of the air outlet (7) is obliquely upward of the conveying belt (2).

2. The multi-stage impurity removal device for recycled aluminum according to claim 1, characterized in that: The distance between the lower surface of the air outlet section of the wind box (4) and the upper surface of the conveying belt (2) is greater than the height of the crushed raw material.

3. The multi-stage impurity removal device for recycled aluminum according to claim 1, characterized in that: The air flow direction of the air blown by the air outlet (7) is within the air inlet range of the air inlet (6).

4. The multi-stage impurity removal device for recycled aluminum according to claim 3, characterized in that: The guide plate (8) is fixedly connected to the opening end edge of the air inlet (6) at the other end.

5. The multi-stage impurity removal device for recycled aluminum according to claim 1, characterized in that: The filter screen (9) is installed on the inner side of the air inlet (6), and the outer side wall of the filter screen (9) protrudes outward of the air inlet (6) of the wind box (4).

6. The multi-stage impurity removal device for recycled aluminum according to claim 5, characterized in that: The outer side wall of the filter screen (9) is in contact with the scraper (10), and the rotating shaft of the scraper (10) is fixedly connected to the transmission shaft of the servo motor (11).

7. The apparatus according to claim 5 or 6, characterized in that: When the scraper (10) rotates, the rotating cleaning track of the scraper (10) covers the entire filter screen (9).

8. The multi-stage impurity removal device for recycled aluminum according to claim 1, characterized in that: The support plate (12) is fixedly connected to the end of the guard plate on both sides of the conveying belt (2) close to the wind box (4), and the other end of the support plate (12) is fixedly connected to the outer side wall of the wind box (4).

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