A metal separation device for construction waste treatment

Abstract

The present invention belongs to the technical field of metal separation devices, and discloses a metal separation device for construction waste treatment, including a treatment box. A crushing mechanism and a plurality of metal separation mechanisms located below the crushing mechanism are arranged inside the treatment box; through grooves penetrating through are uniformly formed on the outer wall of the treatment box, and every two adjacent through grooves form a group and are correspondingly arranged with the metal separation mechanisms; the metal separation mechanism includes an upper ring plate and a lower ring plate both horizontally and fixedly arranged in the through grooves of the same group, an annular sleeve rotatably arranged between the upper ring plate and the lower ring plate, a semi-circular magnetic ring located inside the annular sleeve and fixedly arranged with the upper ring plate, and a driving component for driving the annular sleeve to rotate; in the present invention, through the arranged metal separation mechanism, the magnetically adsorbable metals in the treatment box can be continuously transferred to the outside of the treatment box through the annular sleeve, and there is no idle period, so the separation effect on metals is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal separation devices, and specifically relates to a metal separation device for treating construction waste. Background Art

[0002] In construction waste, for relatively large metal waste, it is usually removed manually. For the relatively small metal waste mixed in the waste, such as nails and short-sized steel wires, due to their small size, manual separation is not suitable. Some use magnetic separation to separate. Usually, an electromagnet is placed in a crushing device to magnetically adsorb the crushed construction waste. When there is a lot of metal waste adsorbed on the electromagnet, it is necessary to stop the machine, transfer the metal waste on the electromagnet to the outside of the crushing device, and after the electromagnet is powered off, the metal waste is separated. Then, the electromagnet is placed inside the crushing device again to work. This leads to the need to regularly pause the treatment of the waste, resulting in a reduction in work efficiency. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a metal separation device for treating construction waste, effectively solving the problems raised in the background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A metal separation device for treating construction waste, including a treatment tank, in which a crushing mechanism and a plurality of metal separation mechanisms located below the crushing mechanism are arranged; through slots are uniformly opened on the outer wall of the treatment tank, and every two adjacent through slots are in a group and are correspondingly arranged with the metal separation mechanisms; the metal separation mechanism includes an upper ring plate and a lower ring plate horizontally and fixedly arranged in the same group of through slots, a ring sleeve rotatably arranged between the upper ring plate and the lower ring plate, a semi-circular magnetic ring located inside the ring sleeve and fixedly arranged with the upper ring plate, and a driving component for driving the ring sleeve to rotate; wherein the lower ring plate is located below the upper ring plate, the notch part of the semi-circular magnetic ring is located outside the treatment tank, the relative part of the semi-circular magnetic ring to the notch part is located inside the treatment tank, and at least one outer material blocking member is arranged on the ring sleeve; in the working state, under the magnetic force of the semi-circular magnetic ring, the magnetically adsorbable metal attached to the ring sleeve is transferred from the inside of the treatment tank to the outside of the treatment tank and separated at the notch of the semi-circular magnetic ring and then falls.

[0005] Preferably, a semi-shell corresponding to the metal separation mechanism is fixedly arranged outside the treatment tank, the inside of the semi-shell is communicated with the inside of the treatment tank through the same group of through slots, and the metal separation mechanism is located inside the semi-shell.

[0006] Preferably, an aggregate shell located below the semi-shell is fixedly arranged on the outer side of the processing box, and a discharge pipe is fixedly arranged at the bottom end of the aggregate shell; the inside of the semi-shell is communicated with the inside of the aggregate shell, and one end of the inner bottom wall of the aggregate shell far away from the discharge pipe is higher than one end of the inner bottom wall of the aggregate shell close to the discharge pipe.

[0007] Preferably, the driving component includes a driving motor fixedly arranged at the bottom end of the lower ring plate, a driving gear fixedly arranged at the output end of the driving motor, and a driven gear ring fixedly arranged inside the annular sleeve and meshed with the driving gear.

[0008] Preferably, an outer track groove is formed on the surface of the upper ring plate close to the annular sleeve, an outer bending part is formed on the outer track groove, and the outer bending part is located above the notch part of the semi-annular magnetic ring and bends towards the inside of the upper ring plate; an annular cavity is formed inside the annular sleeve, at least one outer strip-shaped groove is opened on the outer side of the annular cavity, and a magnetic outer material blocking part is slidably arranged inside the outer strip-shaped groove; in the working state, the outer material blocking part penetrates in and out of the outer strip-shaped groove after being limited by the outer track groove.

[0009] Preferably, the outer material blocking part includes a permanent magnet block slidably arranged inside the outer strip-shaped groove, a sliding block fixedly arranged at the top end of the permanent magnet block and slidably matched with the outer track groove, and a magnetic isolation block fixedly arranged on the side of the permanent magnet block; the overall shape of the permanent magnet block is a T shape placed sideways.

[0010] Preferably, an inner track groove is further formed on the surface of the upper ring plate close to the annular sleeve, an inner bending part is formed on the inner track groove, and the inner bending part is located above the notch part of the semi-annular magnetic ring and bends towards the outside of the upper ring plate; at least one inner strip-shaped groove is opened on the inner side of the annular cavity, and a magnetic inner material blocking part is slidably arranged inside the inner strip-shaped groove, and the inner material blocking part is slidably matched with the inner track groove; in the working state, the inner material blocking part penetrates in and out of the inner strip-shaped groove after being limited by the inner track groove; the structure of the inner material blocking part is the same as that of the outer material blocking part; the difference is that the sliding block in the inner material blocking part is strip-shaped and has the performance of returning to the original shape after deformation, and the length of the sliding block in the inner material blocking part is greater than the distance between the inner and outer diameters of the outer track groove.

[0011] Preferably, the annular sleeve includes an outer cylinder body, a connecting ring and an inner cylinder body, and the outer cylinder body is fixed to the inner cylinder body through the connecting ring; an annular cavity is formed between the outer cylinder body and the inner cylinder body, an outer strip-shaped groove is opened on the outer cylinder body, and an inner strip-shaped groove is opened on the inner cylinder body; the driven gear ring is fixedly arranged inside the outer cylinder body and below the connecting ring.

[0012] Preferably, a self-cleaning mechanism for cleaning the metal separation mechanism is fixedly arranged inside the semi-housing; the self-cleaning mechanism includes a strip-shaped frame fixedly arranged at the top end of the upper ring plate, outer arc-shaped plates and inner arc-shaped plates respectively fixedly arranged at both ends of the strip-shaped frame; wherein the outer arc-shaped plate is located outside the metal separation mechanism, the inner arc-shaped plate is located inside the metal separation mechanism, and cleaning brushes are fixedly arranged on both the outer arc-shaped plate and the inner arc-shaped plate.

[0013] Preferably, the crushing mechanism includes a crushing motor fixedly arranged on the processing box and two crushing rollers rotatably arranged inside the processing box. Transmission gears that mesh with each other are fixedly arranged on both crushing rollers, and one of the crushing rollers is fixedly arranged with the output shaft of the crushing motor.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1) During operation, through the arranged metal separation mechanism, the magnetically adsorbable metals in the processing box can be continuously transferred to the outside of the processing box through the annular sleeve, and there is no idle period, so the separation effect on metals is good;

[0016] 2) During operation, through the combined use of the outer baffle, inner baffle, outer track groove and inner track groove, on the one hand, it can expand the effective magnetic adsorption area of the metal separation mechanism for metals, and on the other hand, it can also automatically realize the detachment of the metals on the outer baffle and the inner baffle, which is relatively convenient;

[0017] 3) During operation, through the arranged self-cleaning mechanism, the annular sleeve can be cleaned by the cleaning brush, so as to ensure the magnetic adsorption force of the semi-circular magnetic ring, and thus ensure the separation effect on metals. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0019] In the drawings:

[0020] Figure 1 is a schematic structural diagram of a metal separation device for construction waste treatment of the present invention;

[0021] Figure 2 is a schematic structural diagram of the crushing mechanism of the present invention;

[0022] Figure 3 is a schematic structural diagram of the internal structure of the processing box of the present invention;

[0023] Figure 4 is a schematic installation structure diagram of the metal separation mechanism and the self-cleaning mechanism of the present invention;

[0024] Figure 5 Structural schematic diagram of the self-cleaning mechanism of the present invention;

[0025] Figure 6 Structural schematic diagram of the metal separation mechanism of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged structural schematic diagram at position A in

[0027] Figure 8 For the present invention Figure 6 Enlarged structural schematic diagram at position B in

[0028] Figure 9 Structural schematic diagram of the upper ring plate of the present invention;

[0029] Figure 10 One of the structural schematic diagrams of the annular sleeve of the present invention;

[0030] Figure 11 Another structural schematic diagram of the annular sleeve of the present invention.

[0031] In the figure: 1. Processing box; 101. Through slot; 102. Half shell; 103. Aggregate shell; 104. Discharge pipe; 2. Crushing mechanism; 201. Crushing motor; 202. Crushing roller; 203. Transmission gear; 3. Metal separation mechanism; 4. Upper ring plate; 401. Outer track groove; 402. Outer bending part; 403. Inner track groove; 404. Inner bending part; 5. Annular sleeve; 501. Annular cavity; 502. Outer strip groove; 503. Inner strip groove; 504. Outer cylinder; 505. Connecting ring; 506. Inner cylinder; 6. Lower ring plate; 7. Semi-circular magnetic ring; 8. Driving component; 801. Driving motor; 802. Driving gear; 803. Driven gear ring; 9. Outer baffle; 901. Permanent magnet block; 902. Sliding block; 903. Magnetic isolation block; 10. Inner baffle; 11. Self-cleaning mechanism; 1101. Outer arc plate; 1102. Inner arc plate; 1103. Cleaning brush; 1104. Strip-shaped frame. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Provided by Figures 1-11 Given;

[0034] Refer to Figures 1-6, the present invention relates to a metal separation device for construction waste treatment, which includes a treatment box 1. Inside the treatment box 1, there is a crushing mechanism 2 and a plurality of metal separation mechanisms 3 located below the crushing mechanism 2. The outer wall of the treatment box 1 is evenly provided with through slots 101 that penetrate through. Two adjacent through slots 101 form a group and are correspondingly arranged with the metal separation mechanism 3. The metal separation mechanism 3 includes an upper ring plate 4 and a lower ring plate 6 that are both horizontally and fixedly arranged in the same group of through slots 101, an annular sleeve 5 rotatably arranged between the upper ring plate 4 and the lower ring plate 6, a semi-circular magnetic ring 7 located inside the annular sleeve 5 and fixedly arranged with the upper ring plate 4, and a driving component 8 for driving the annular sleeve 5 to rotate. Among them, the lower ring plate 6 is located below the upper ring plate 4. The notch part of the semi-circular magnetic ring 7 is located outside the treatment box 1, and the part of the semi-circular magnetic ring 7 opposite to the notch part is located inside the treatment box 1. At least one outer baffle 9 is also arranged on the annular sleeve 5. In the working state, under the magnetic force of the semi-circular magnetic ring 7, the metal that can be magnetically adsorbed on the annular sleeve 5 is transferred from the inside of the treatment box 1 to the outside of the treatment box 1 and then separated and falls at the notch of the semi-circular magnetic ring 7.

[0035] With such a design, during use, construction waste is put into the inside of the treatment box 1 through the feed port of the treatment box 1. The construction waste is first crushed by the crushing mechanism 2. During the falling process of the crushed construction waste, the metal separation mechanism 3 collects it by magnetic adsorption, and then transfers it to the outside of the treatment box 1, while the crushed construction waste is discharged through the discharge port below the treatment box 1.

[0036] Specifically, the metal separation mechanisms 3 are evenly arranged along the circumferential direction of the treatment box 1, so as to ensure that the semi-circular magnetic rings 7 in the metal separation mechanisms 3 are relatively dense, strengthening the magnetic adsorption force on the metal. When under the magnetic force of the semi-circular magnetic ring 7, the metal that can be magnetically adsorbed in the crushed construction waste will adhere to the inner and outer surfaces of the annular sleeve 5. The annular sleeve 5 is made of materials such as plastic. Subsequently, the driving component 8 drives the annular sleeve 5 to rotate. Under the blocking action of the outer baffle 9, the metal adsorbed on the annular sleeve 5 is transferred to the outside of the treatment box 1 through the through slots 101. When the annular sleeve 5 moves to the notch of the semi-circular magnetic ring 7, at this time, the metal on the annular sleeve 5 is no longer magnetically adsorbed, and under the action of gravity, the metal on the annular sleeve 5 falls and separates, and the annular sleeve 5 continues to rotate. Since the annular sleeve 5 rotates at a low speed during the working process, it can continuously separate the metal in the construction waste without a blank period, so the separation effect on the metal is good.

[0037] Refer to Figure 3, considering that dust will be generated during the crushing process and to avoid dust overflow, a semi - housing 102 corresponding to the metal separation mechanism 3 is fixedly arranged on the outside of the processing box 1. The inside of the semi - housing 102 is communicated with the inside of the processing box 1 through the same group of through - slots 101. The metal separation mechanism 3 is located inside the semi - housing 102;

[0038] With such a design, the metal magnetically adsorbed in the processing box 1 can be transferred to the inside of the semi - housing 102 for centralized processing.

[0039] Refer to Figure 3 , considering that there are multiple semi - housings 102, and it is necessary to gather the metal in each semi - housing 102 together. An aggregate shell 103 located below the semi - housing 102 is also fixedly arranged on the outside of the processing box 1. A discharge pipe 104 is fixedly arranged at the bottom end of the aggregate shell 103; the inside of the semi - housing 102 is communicated with the inside of the aggregate shell 103, and one end of the inner bottom wall of the aggregate shell 103 far from the discharge pipe 104 is higher than one end of the inner bottom wall of the aggregate shell 103 close to the discharge pipe 104;

[0040] With such a design, due to the height difference, after the metal in each semi - housing 102 enters the inside of the aggregate shell 103, it can all be discharged through the discharge pipe 104, which is more convenient.

[0041] Refer to Figure 7 , specifically, the driving component 8 includes a driving motor 801 fixedly arranged at the bottom end of the lower ring plate 6, a driving gear 802 fixedly arranged at the output end of the driving motor 801, and a driven gear ring 803 fixedly arranged inside the annular sleeve 5 and meshing with the driving gear 802;

[0042] With such a design, the driving motor 801 drives the driving gear 802 to rotate. The driving gear 802 drives the driven gear ring 803 to rotate through meshing, and the driven gear ring 803 drives the annular sleeve 5 to rotate, so as to drive the annular sleeve 5 to rotate continuously.

[0043] Refer to Figures 8-9 , in order to further expand the effective magnetic adsorption area for the metal in construction waste and improve the separation effect of the metal, an outer track groove 401 is formed on the side of the upper ring plate 4 close to the annular sleeve 5. An outer bending part 402 is formed on the outer track groove 401. The outer bending part 402 is located above the notch part of the semi - annular magnetic ring 7 and bends towards the inside of the upper ring plate 4; an annular cavity 501 is formed inside the annular sleeve 5, and at least one outer strip - shaped groove 502 is opened on the outer side of the annular cavity 501. The magnetic outer baffle 9 slides inside the outer strip - shaped groove 502; in the working state, the outer baffle 9 penetrates in and out of the outer strip - shaped groove 502 after being limited by the outer track groove 401;

[0044] With such a design, when the annular sleeve 5 rotates, and the outer material blocking member 9 thereon moves to the inside of the processing box 1, under the action of the outer track groove 401, the outer material blocking member 9 extends out of the annular cavity 501, so as to adsorb the metal by suction through the outer material blocking member 9. After the outer material blocking member 9 moves to the inside of the half shell 102, under the action of the outer bending portion 402 in the outer track groove 401, the outer material blocking member 9 contracts into the annular cavity 501. At this time, the metal on the outer material blocking member 9 will fall off after being blocked by the outer strip groove 502, realizing the self - detachment process of the metal on the outer material blocking member 9, which is relatively convenient.

[0045] Specifically, the outer material blocking member 9 includes a permanent magnet block 901 slidably arranged in the outer strip groove 502, a sliding block 902 fixedly arranged at the top of the permanent magnet block 901 and slidably matched with the outer track groove 401, and a magnetic isolation block 903 fixedly arranged on the side of the permanent magnet block 901; the overall shape of the permanent magnet block 901 is a T - shape placed sideways;

[0046] With such a design, when the outer material blocking member 9 contracts into the annular cavity 501, at this time the magnetic isolation block 903 will also enter the inside of the outer strip groove 502, thereby blocking the magnetic adsorption of the permanent magnet block 901 to the metal, accelerating the detachment of the metal, and being able to prevent the remaining metal from staying on the outer wall of the outer material blocking member 9, making the metal completely detached.

[0047] Refer to Figures 8-9 In order to further improve the separation rate of the metal, an inner track groove 403 is further formed on the side of the upper ring plate 4 close to the annular sleeve 5. An inner bending portion 404 is formed on the inner track groove 403. The inner bending portion 404 is located above the notch portion of the semi - annular magnetic ring 7 and bends outward from the upper ring plate 4; at least one inner strip groove 503 is opened on the inner side of the annular cavity 501. A magnetic inner material blocking member 10 is slidably arranged in the inner strip groove 503, and the inner material blocking member 10 is slidably matched with the inner track groove 403; in the working state, the inner material blocking member 10 penetrates in and out of the inner strip groove 503 under the limitation of the inner track groove 403; the structure of the inner material blocking member 10 is the same as that of the outer material blocking member 9;

[0048] With such a design, the working process of the inner material blocking member 10 is basically the same as that of the outer material blocking member 9 and will not be described in detail; the difference is that the sliding block 902 in the inner material blocking member 10 is strip - shaped and has the property of returning to its original shape after deformation, and the length of the sliding block 902 in the inner material blocking member 10 is greater than the distance between the inner and outer diameters of the outer track groove 401;

[0049] With such a design, the sliding block 902 in the inner material blocking member 10 can slide stably in the inner track groove 403 without entering the inside of the outer track groove 401. The specific parameters can be set according to the actual situation and are not limited here.

[0050] Reference Figures 10-11 , specifically, the annular sleeve 5 includes an outer cylinder 504, a connecting ring 505 and an inner cylinder 506. The outer cylinder 504 is fixed to the inner cylinder 506 through the connecting ring 505. An annular cavity 501 is formed between the outer cylinder 504 and the inner cylinder 506. An outer strip-shaped groove 502 is formed on the outer cylinder 504, and an inner strip-shaped groove 503 is formed on the inner cylinder 506. The driven gear ring 803 is fixedly arranged inside the outer cylinder 504 and below the connecting ring 505.

[0051] Reference Figures 4-5 , considering that a large amount of dust will be generated during crushing, and excessive dust adhering to the annular sleeve 5 will reduce the magnetic adsorption force of the semi-circular magnetic ring 7 on metals. To solve this problem, a self-cleaning mechanism 11 for cleaning the metal separation mechanism 3 is fixedly arranged inside the semi-shell 102. The self-cleaning mechanism 11 includes a strip-shaped frame 1104 fixedly arranged at the top of the upper ring plate 4, an outer arc-shaped plate 1101 and an inner arc-shaped plate 1102 respectively fixedly arranged at both ends of the strip-shaped frame 1104. The outer arc-shaped plate 1101 is located outside the metal separation mechanism 3, and the inner arc-shaped plate 1102 is located inside the metal separation mechanism 3. Cleaning brushes 1103 are fixedly arranged on both the outer arc-shaped plate 1101 and the inner arc-shaped plate 1102.

[0052] With such a design, when the annular sleeve 5 inside the metal separation mechanism 3 rotates, the outer side of the annular sleeve 5 can be cleaned by the cleaning brush 1103 on the outer arc-shaped plate 1101, and the inner side of the annular sleeve 5 can be cleaned by the cleaning brush 1103 on the inner arc-shaped plate 1102, so as to ensure the use effect of the semi-circular magnetic ring 7.

[0053] Reference Figure 2 , now a specific way of the crushing mechanism 2 is provided. The crushing mechanism 2 includes a crushing motor 201 fixedly arranged on the processing box 1 and two crushing rollers 202 rotatably arranged inside the processing box 1. Driving gears 203 that mesh with each other are fixedly arranged on both of the two crushing rollers 202, and one of the crushing rollers 202 is fixedly arranged on the output shaft of the crushing motor 201.

[0054] With such a design, by driving one of the crushing rollers 202 to rotate through the crushing motor 201, and through the arrangement of the two driving gears 203, the rotation directions of the two crushing rollers 202 are opposite, so as to perform crushing treatment when construction engineering waste passes through.

[0055] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal separation device for treating construction waste, comprising a treatment box (1), wherein a crushing mechanism (2) and a plurality of metal separation mechanisms (3) located below the crushing mechanism (2) are arranged inside the treatment box (1); characterized in that: The outer wall of the processing box (1) is evenly provided with through slots (101), and two adjacent through slots (101) form a group and are arranged corresponding to the metal separation mechanism (3); the metal separation mechanism (3) comprises an upper ring plate (4) and a lower ring plate (6) both horizontally fixedly arranged in the same group of through slots (101), an annular sleeve (5) rotatably arranged between the upper ring plate (4) and the lower ring plate (6), a semi-annular magnetic ring (7) located inside the annular sleeve (5) and fixedly arranged with the upper ring plate (4), and a driving part for driving the annular sleeve (5) to rotate. Part (8); wherein the lower ring plate (6) is located below the upper ring plate (4); the notch portion of the semi-annular magnetic ring (7) is located outside the processing box (1); the portion of the semi-annular magnetic ring (7) opposite to the notch portion is located inside the processing box (1); and at least one outer material stopper (9) is further provided on the annular sleeve (5); in a working state, under the magnetic force of the semi-annular magnetic ring (7), the magnetically absorbable metal attached to the annular sleeve (5) is transferred from the inside of the processing box (1) to the outside of the processing box (1), and then separated at the notch of the semi-annular magnetic ring (7) and falls down; A half shell (102) arranged corresponding to the metal separation mechanism (3) is fixedly arranged on the outside of the processing box (1); the interior of the half shell (102) is connected to the interior of the processing box (1) through the same group of through slots (101); and the metal separation mechanism (3) is located on the inside of the half shell (102); An outer track groove (401) is formed on one side of the upper ring plate (4) close to the annular sleeve (5), and an outer curved portion (402) is formed on the outer track groove (401). The outer curved portion (402) is located above the notch portion of the semi-annular magnetic ring (7) and is curved toward the inner side of the upper ring plate (4); an annular cavity (501) is formed inside the annular sleeve (5), and at least one outer strip groove (502) is provided outside the annular cavity (501). A magnetic outer stopper (9) is slidably arranged inside the outer strip groove (502); in a working state, the outer stopper (9) is limited by the outer track groove (401) and then passes in and out of the outer strip groove (502); The outer material stopper (9) comprises a permanent magnet block (901) slidably arranged in the outer strip groove (502), a sliding block (902) fixedly arranged at the top of the permanent magnet block (901) and slidably matched with the outer track groove (401), and a magnetic isolation block (903) fixedly arranged on the side of the permanent magnet block (901); wherein the overall shape of the permanent magnet block (901) is a sideways T-shape; An inner track groove (403) is formed on one side of the upper ring plate (4) close to the annular sleeve (5), and an inner curved portion (404) is formed on the inner track groove (403). The inner curved portion (404) is located above the notch of the semi-annular magnetic ring (7) and is curved toward the outer side of the upper ring plate (4); at least one inner strip groove (503) is formed on the inner side of the annular cavity (501), and a magnetic inner stopper (10) is slidably arranged in the inner strip groove (503), and the inner stopper (10) and the inner track groove are connected to each other. (403) sliding fit; in the working state, the inner stopper (10) is limited by the inner track groove (403) and then passes in and out of the inner strip groove (503); the structure of the inner stopper (10) is the same as that of the outer stopper (9); the difference is that the sliding block (902) in the inner stopper (10) is long and has the ability to return to its original shape after deformation, and the length of the sliding block (902) in the inner stopper (10) is greater than the distance between the inner and outer diameters of the outer track groove (401); The annular sleeve (5) comprises an outer cylinder (504), a connecting ring (505) and an inner cylinder (506), wherein the outer cylinder (504) is fixed to the inner cylinder (506) via the connecting ring (505); an annular cavity (501) is formed between the outer cylinder (504) and the inner cylinder (506); an outer strip groove (502) is provided on the outer cylinder (504), and an inner strip groove (503) is provided on the inner cylinder (506); and a driven gear ring (803) is fixedly arranged on the inner side of the outer cylinder (504) and located below the connecting ring (505).

2. A metal separation device for treating construction waste according to claim 1, characterized in that: The outside of the processing box (1) is also fixedly provided with an aggregate shell (103) located below the semi-shell (102), and a discharge pipe (104) is fixedly provided at the bottom end of the aggregate shell (103); wherein the semi-shell (102) is connected to the inside of the aggregate shell (103), and an end of the inner bottom wall of the aggregate shell (103) away from the discharge pipe (104) is higher than an end of the inner bottom wall of the aggregate shell (103) close to the discharge pipe (104).

3. The metal separation device for treating construction waste according to claim 1, characterized in that: The driving component (8) comprises a driving motor (801) fixedly arranged at the bottom end of the lower ring plate (6), a driving gear (802) fixedly arranged at the output end of the driving motor (801), and a driven gear ring (803) fixedly arranged on the inner side of the annular sleeve (5) and meshingly matched with the driving gear (802).

4. The metal separation device for treating construction waste according to claim 1, characterized in that: A self-cleaning mechanism (11) for cleaning the metal separation mechanism (3) is fixedly arranged inside the half shell (102); the self-cleaning mechanism (11) comprises a strip frame (1104) fixedly arranged at the top of the upper ring plate (4), an outer arc plate (1101) and an inner arc plate (1102) respectively fixedly arranged at both ends of the strip frame (1104); wherein the outer arc plate (1101) is located on the outside of the metal separation mechanism (3), and the inner arc plate (1102) is located on the inside of the metal separation mechanism (3); and cleaning brushes (1103) are fixedly arranged on the outer arc plate (1101) and the inner arc plate (1102).

5. The metal separation device for treating construction waste according to claim 1, characterized in that: The crushing mechanism (2) comprises a crushing motor (201) fixedly arranged on the processing box (1) and two crushing rollers (202) rotatably arranged in the processing box (1), the two crushing rollers (202) are both fixedly arranged with mutually meshing transmission gears (203), and one of the crushing rollers (202) is fixedly arranged with the output shaft of the crushing motor (201).

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