CN114832929B - Metal recovery device for classifying construction waste and use method thereof - Google Patents

Abstract

The invention relates to a metal recovery device for classifying construction waste, which comprises a box body, wherein a feed inlet is formed in the top of the box body, a feed hopper is fixedly connected in the feed inlet, a main shaft is fixedly connected between the inner walls of the two ends of the feed hopper in a rotating way, a plurality of blades are fixedly connected to the outer wall of the circumference of the main shaft, a plurality of uniformly distributed openings are formed in the top of the blades, electromagnets are fixedly connected to the inside of the blades, two inner shafts which are symmetrically distributed on two sides are penetrated and arranged on the inner walls at the rear end of the feed hopper, crushing rollers are fixedly sleeved on the inner shafts, the inner shafts are rotatably connected with the feed hopper, a driven gear and a main gear are fixedly sleeved on the two inner shafts respectively, a motor is fixedly connected to the inner wall at the rear end of the box body, a motor output shaft is fixedly connected with one of the inner shafts, and a shaking mechanism is arranged on the blades; the invention adsorbs the metal in the crushed mixture by utilizing the electromagnet in the blade plate, and realizes the falling of the construction waste by the rotation of the blade plate, thereby realizing effective separation.

Description

A metal recycling device for classifying construction waste and its use method

technical field

The invention relates to the technical field of garbage recovery, in particular to a metal recovery device for sorting construction waste.

Background technique

Construction waste refers to the dregs, spoils, discarded materials, silt and other wastes generated during the construction, laying or demolition, and repair of various buildings, structures, pipe networks, etc. by construction units or individuals. Construction waste can be reused after treatment. To another extent, construction waste can be turned into treasure and usable resources for secondary use.

The metal waste in the construction waste can be reused without special complicated treatment, so it is necessary to separate the metal waste from the construction waste. Not only can the metal waste be reused quickly, the metal waste can be separated from the construction waste, and the weight of the construction waste can be greatly reduced, which saves transportation costs.

In order to solve the above problems, the present invention proposes a metal recovery device for classification of construction waste.

Contents of the invention

The object of the present invention is to overcome the problem that the prior art is not convenient for separating metals from construction waste, and provide a metal recovery device for classification of construction waste to solve the above technical problems.

In order to realize the purpose of the present invention, the technical scheme adopted in the present invention is:

A metal recovery device for construction waste classification, comprising a box body, the top of the box body is provided with a feed inlet, a feed hopper is fixedly connected inside the feed inlet, the same main shaft is rotatably connected between the inner walls at both ends of the feed hopper, a plurality of leaf plates distributed in a circular array are fixedly connected to the outer wall of the main shaft circumference, a plurality of evenly distributed openings are opened on the top of the leaf plate, electromagnets are fixedly connected to the inside of the leaf plate, two inner shafts symmetrically distributed on both sides are arranged through the inner wall of the rear end of the feed hopper, and crushing rollers are sleeved and fixed on the inner shaft and between the inner shaft and the feed hopper Rotational connection, the main shaft is set directly below the two inner shafts, and the two inner shafts are respectively sleeved and fixed with a slave gear and a master gear. The slave gear and the master gear are meshed and connected. The inner wall of the rear end of the box is fixedly connected with a motor. The output shaft of the motor is fixedly connected with one of the inner shafts. A shaking mechanism is arranged on the blade plate, and the shaking mechanism is connected with a bulk material mechanism.

Preferably, the shaking mechanism includes a guide block, guide plates are fixedly connected to both sides of the leaf plate, a guide groove is provided on the outside of the guide plate, a guide block is slidably connected to the guide groove, an ear piece is fixedly connected to the outside of the guide block, a connecting rod is rotatably connected to the ear piece, a ferrule with an integrated structure is arranged on the top of the connecting rod, the same sub-axis is rotationally connected between the two ferrules on two adjacent leaf plates, and the same guide spring is fixedly connected between the guide block and the inner wall of the guide groove.

Preferably, the bulk material mechanism includes a plurality of evenly distributed circular rings, the circular rings are rotatably connected to the sub-shafts, and a plurality of bulk material rods distributed in an annular array are fixedly connected to the outer wall of the circular ring.

Preferably, the section of the bulk material rod is set as a regular polygon.

Preferably, the outer wall of the bulk material rod is provided with two force-receiving parts, the two force-receiving parts are distributed in a figure-eight shape, and the force-bearing parts are located at the upper part of the bulk material rod.

Preferably, an orientation plate is fixedly connected to the outer wall of one side of the feed hopper, an orientation groove is opened at the front end of the orientation plate, an orientation block is slidably connected in the orientation groove, an orientation rod is fixedly connected to the front end of the orientation block, a sleeve block is fixedly connected to the front end of the orientation rod, a frame bar is fixedly connected to the bottom of the sleeve block, a magnetic strip is fixedly connected to the inside of the frame rod, the magnetic strip is arranged below the blade plate, and the sleeve block is connected to a transmission mechanism.

Preferably, the transmission mechanism includes a fixed block, the fixed block is fixedly connected to the front end of the feed hopper, the fixed block is rotatably connected with a reciprocating screw, the sleeve is sleeved on the reciprocating screw, the side of the reciprocating screw away from the sleeve is fixedly connected with the first bevel gear, the front end of the main shaft extends to the outside of the feed hopper and is fixedly connected with the second bevel gear, and the first bevel gear and the second bevel gear are meshed and connected.

Preferably, the rear end of the pole is fixedly connected with a shielding shell, the cross section of the shielding shell is set in an arc shape, the magnetic strip is wrapped in the shielding shell, and the shielding shell is set on the side of the magnetic strip close to the orientation plate.

Preferably, the bottom of the box body is provided with a discharge port, the inner walls on both sides of the discharge port are rotatably connected with closing plates, both sides of the bottom of the box body are provided with chutes, and a slider is slidably connected in the chute, the same return spring is fixedly connected between the slider and the inner wall of the chute, and the same connecting rod is rotatably connected between the slider and the adjacent closing plate.

Beneficial effect:

1. Start the motor and electromagnet, the output shaft of the motor drives the corresponding inner shaft, the main gear and the crushing roller to rotate, the main gear meshes to drive the slave gear to rotate, and then drives the other inner shaft and the crushing roller to rotate synchronously, and then puts the construction waste from the top of the feeding hopper, and the rotating crushing roller crushes the construction waste, and the mixture of crushed construction waste and metal falls along the feeding hopper. The metal in the mixture is absorbed, and since the whole blade is in a rotating state, the metal can be evenly adsorbed on multiple blades. The blades are provided with openings, which can increase the area of adsorbed metals through the openings, thereby increasing the total amount of adsorbed metals.

2. There is a bulk material rod and a ring. When the mixture falls, it hits the bulk material rod. The bulk material rod rotates with the ring, and the rotating bulk material rod disperses the mixture, so that the construction waste in the mixture can quickly fall and prevent clogging. The metal has a large amount of movement, which can promote the relative movement between the metal and the construction waste, thereby further promoting the whereabouts of the construction waste and making the metal evenly adsorbed. Further, when the metal is slapped by a bulk material rod with a regular polygonal cross section, the initial position of the slap is different, and the metal can be slapped in different directions, thereby further promoting the relative movement between the metal and the construction waste. , and under the action of its reverse elastic force, the whole of the sub-shaft is shaken up and down, so that the bulk rod can be broken up at different positions, thereby promoting the above effect, and the bulk rod is provided with a figure-eight distribution.

3. When the main shaft rotates, it synchronously drives the second bevel gear to rotate, and then meshes to drive the first bevel gear and the reciprocating screw to rotate. Under the action of the reciprocating thread, the cover block follows the directional rod and the directional block, and reciprocates along the directional slot, and then the cover block synchronously drives the frame rod and the magnetic strip to reciprocate, so that the rotation of the blade can be accelerated by the magnetic force of the magnetic strip, and a shielding shell is provided to reduce the magnetic force between the magnetic strip and the electromagnet during the return movement of the magnetic strip.

4. The construction waste falls on the closing plate and gradually accumulates. When the total amount of construction waste gradually increases, its gravity is applied to the closing plate, and the closing plate rotates downward. The connecting rod pushes the slider to move along the chute, forming a squeeze on the return spring. The construction waste can be discharged through the gap between the two closing plates, thereby effectively reducing dust flying during discharge.

Description of drawings

Fig. 1 is a kind of overall structure schematic diagram of the metal recovery device that is used for construction waste classification of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the feed hopper of a metal recovery device for classification of construction waste according to the present invention;

Fig. 3 is a schematic diagram of the leaf plate structure of a metal recovery device for construction waste classification according to the present invention;

Fig. 4 is a schematic diagram of the enlarged structure at A of a metal recovery device for construction waste classification according to the present invention;

Fig. 5 is a structural schematic diagram of a bulk material rod of a metal recovery device for construction waste classification according to the present invention;

Fig. 6 is a schematic cross-sectional structure diagram of a metal recovery device for construction waste classification according to the present invention;

Fig. 7 is a schematic diagram of the bottom structure of a metal recovery device for classification of construction waste according to the present invention;

Fig. 8 is a schematic diagram showing an enlarged structure at B of a metal recovery device for classifying construction waste according to the present invention.

The reference signs are as follows:

1. Box body; 2. Feeding hopper; 3. Main shaft; 4. Blade; 5. Opening; 6. Guide plate; 7. Guide groove; 8. Guide block; 9. Ear block; 10. Guide spring; 11. Connecting rod; 23, orientation slot; 24, orientation block; 25, orientation rod; 26, cover block; 27, frame rod; 28, magnetic strip; 29, fixed block; 30, reciprocating screw rod; 31, first bevel gear; 32, second bevel gear; 33, shielding shell; 34, chute; 35, slide block; 36, return spring; 37, closing plate; 38, connecting rod.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Below in conjunction with accompanying drawing 1-8 and embodiment the present invention is further described:

In this embodiment, as shown in Figures 1-7, a metal recycling device for construction waste classification includes a box body 1, a feed inlet is provided on the top of the box body 1, a feed hopper 2 is fixedly connected to the feed inlet, the same main shaft 3 is rotatably connected between the inner walls of the two ends of the feed hopper 2, and a plurality of blades 4 distributed in a circular array are fixedly connected to the outer wall of the main shaft 3, and a plurality of evenly distributed openings 5 are opened on the top of the blade 4. The inside of the blade 4 is fixedly connected with electromagnets. The inner shaft 17 is sleeved and fixed with a crushing roller 18. The inner shaft 17 is rotationally connected with the feed hopper 2. The main shaft 3 is arranged directly below the two inner shafts 17. The two inner shafts 17 are respectively sleeved and fixed with a slave gear 19 and a master gear 20. The slave gear 19 and the master gear 20 are meshed and connected. The inner wall of the rear end of the box body 1 is fixedly connected with a motor 21. It is connected with a bulk material mechanism.

Further, the shaking mechanism includes a guide block 8, both sides of the blade plate 4 are fixedly connected with a guide plate 6, the outside of the guide plate 6 is provided with a guide groove 7, the guide groove 7 is slidingly connected with a guide block 8, the outer side of the guide block 8 is fixedly connected with an ear piece 9, the ear piece 9 is rotatably connected with a connecting rod 11, the top of the connecting rod 11 is provided with an integral structure. The spring 10 can make the bulk material mechanism move in different positions.

Further, the bulk material mechanism includes a plurality of evenly distributed circular rings 14, which are rotatably connected to the sub-shaft 13, and the outer wall of the circular ring 14 is fixedly connected with a plurality of bulk material rods 15 distributed in an annular array, so that the mixture can be beaten through the bulk material rods 15.

Further, the cross-section of the bulk material rod 15 is set to be a regular polygon, which can improve the effect of bulk material.

Further, the outer wall of the bulk material rod 15 is provided with two force-receiving parts 16, the two force-receiving parts 16 are distributed in a figure-eight shape, and the force-receiving parts 16 are located at the upper part of the bulk material rod 15, so that the rotation speed of the bulk material rod 15 can be increased.

Further, the outer wall of one side of the feed hopper 2 is fixedly connected with an orientation plate 22, the front end of the orientation plate 22 is provided with an orientation groove 23, and an orientation block 24 is slidably connected in the orientation groove 23. rotation.

Further, the transmission mechanism includes a fixed block 29, which is fixedly connected to the front end of the feed hopper 2, the fixed block 29 is rotatably connected with a reciprocating screw 30, the cover block 26 is sleeved on the reciprocating screw 30, the side of the reciprocating screw 30 away from the cover block 26 is fixedly connected with a first bevel gear 31, the front end of the main shaft 3 extends to the outside of the feed hopper 2 and is fixedly connected with a second bevel gear 32, and the meshing connection between the first bevel gear 31 and the second bevel gear 32 can realize transmission.

Further, the rear end of the frame rod 27 is fixedly connected with a shielding shell 33, the cross section of the shielding shell 33 is arranged in an arc shape, the magnetic strip 28 is wrapped in the shielding shell 33, and the shielding shell 33 is arranged on the side of the magnetic strip 28 close to the orientation plate 22, so as to prevent the magnetic force from affecting the rotation of the blade 4 during the return trip.

In this embodiment, with reference to Figures 7-8, the bottom of the box body 1 is provided with an outlet, the inner walls on both sides of the outlet are rotatably connected with closing plates 37, both sides of the bottom of the box body 1 are provided with chute 34, and a slider 35 is slidably connected in the chute 34, the same return spring 36 is fixedly connected between the slider 35 and the inner wall of the chute 34, and the same connecting rod 38 is rotatably connected between the slider 35 and the adjacent closing plate 37, so as to prevent dust from flying.

Start the motor 21 and the electromagnet, the output shaft of the motor 21 drives the corresponding inner shaft 17, the main gear 20 and the crushing roller 18 to rotate, the main gear 20 meshes to drive the slave gear 19 to rotate, and then synchronously drives the other inner shaft 17 and the crushing roller 18 to rotate, and then the construction waste is put into the feed hopper 2, and the rotating crushing roller 18 crushes the construction waste. The mixture of crushed construction waste and metal falls along the feed hopper 2. The rotation of the main shaft 3 can make the mixture fall evenly. Since the electromagnet is arranged in the leaf plate 4, the metal in the mixture can be attracted by the electromagnet. Since the entire leaf plate 4 is in a rotating state, the metal can be evenly adsorbed on the plurality of leaf plates 4. The opening 5 is provided on the leaf plate 4. On the one hand, the area of the adsorbed metal can be increased through the opening 5, thereby increasing the total amount of adsorbed metal.

Further, a bulk material rod 15 and a ring 14 are provided. When the mixture falls, it hits the bulk material rod 15. The bulk material rod 15 rotates with the ring 14, and the rotating bulk material rod 15 breaks up the mixture, thereby facilitating the rapid falling of the construction waste in the mixture and preventing clogging. Due to the different forms of construction waste and metal, powdered construction waste has a small amount of movement, while metal has a large amount of movement, which can promote the relative movement between the metal and construction waste, thereby further promoting the falling of construction waste and making the metal evenly adsorbed. Further, when the bulk rod 15 with a regular polygonal cross section beats the metal, the initial position of the beat is different, and the metal can be slapped in different directions, thereby further promoting the relative movement between the metal and the construction waste. Move, and then push the guide block 8 to move along the guide groove 7 through the connecting rod 11, form the extrusion to the guide spring 10, and under the action of its reverse elastic force, the whole of the sub-shaft 13 is shaken up and down, so that the bulk rod 15 can be broken up at different positions, thus promoting the above effect, and the bulk rod 15 is provided with a figure-eight distribution of force parts 16, the contact area of the mixture can be raised and fallen by the force part 16, and the overall rotation speed of the bulk rod 15 can be improved, thereby improving the beating strength.

Further, when the main shaft 3 rotates, it synchronously drives the second bevel gear 32 to rotate, and then meshes to drive the first bevel gear 31 and the reciprocating screw 30 to rotate. Under the action of the reciprocating thread, the sleeve block 26 follows the orientation rod 25 and the orientation block 24, and moves reciprocally along the orientation groove 23, and then the sleeve block 26 synchronously drives the frame rod 27 and the magnetic strip 28 to reciprocate, and the rotation of the blade 4 can be accelerated by the magnetic force of the magnetic strip 28. 8. During the return trip, reduce the magnetic force between the magnetic strip 28 and the electromagnet.

Further, the construction waste falls on the closing plate 37 and gradually accumulates. When the total amount of construction waste gradually increases, its gravity is applied to the closing plate 37, and the closing plate 37 rotates downwards, and the connecting rod 38 pushes the slider 35 to move along the chute 34, which squeezes the return spring 36, and the construction waste can be discharged through the gap between the two closing plates 37, thereby effectively reducing dust flying during discharge.

Working principle: when the present invention is in use, start the motor 21 and the electromagnet, the output shaft of the motor 21 drives the corresponding inner shaft 17, the main gear 20 and the crushing roller 18 to rotate, the main gear 20 meshes and drives the slave gear 19 to rotate, and then synchronously drives the other inner shaft 17 and the crushing roller 18 to rotate, and then puts the construction waste from the top of the feeding hopper 2, and the rotating crushing roller 18 crushes the construction waste. When going up, drive the vane 4 to rotate around the main shaft 3, so that the mixture can fall evenly. Since the vane 4 is provided with an electromagnet, the metal in the mixture can be sucked by the electromagnet. Since the whole of the vane 4 is in a rotating state, the metal can be evenly adsorbed on a plurality of vane 4. The vane 4 is provided with an opening 5. On the one hand, the area of the adsorbed metal can be increased through the opening 5, thereby increasing the total amount of adsorbed metal. 5 and ring 14, when the mixture falls, it hits on the bulk material rod 15, and the bulk material rod 15 rotates with the ring 14, and the rotating bulk material rod 15 breaks up the mixture, so that the construction waste in the mixture falls quickly and prevents clogging. Shaped construction waste has a small amount of motion, while metal has a large amount of motion, which can promote the relative movement between the metal and the construction waste, thereby further promoting the falling of the construction waste, and making the metal evenly absorbed. Further, when the bulk material rod 15 with a regular polygonal cross section beats the metal, the initial position of the beat is different, and the metal can be slapped in different directions, thereby further promoting the relative movement between the metal and the construction waste. The block 8 moves along the guide groove 7 to squeeze the guide spring 10, and under the action of its reverse elastic force, the whole sub-shaft 13 shakes up and down, so that the bulk rod 15 can be broken up at different positions, thus promoting the above effect, and the bulk rod 15 is provided with a force-bearing part 16 distributed in a figure-eight shape, the contact area of the falling mixture can be increased through the force-bearing part 16, and the overall rotation speed of the bulk rod 15 can be increased, thereby increasing the intensity of beating. Further, when the main shaft 3 rotates , synchronously drives the second bevel gear 32 to rotate, and then meshes to drive the first bevel gear 31 and the reciprocating screw 30 to rotate. Under the action of the reciprocating thread, the cover block 26 follows the directional rod 25 and the directional block 24 to reciprocate along the orientation groove 23, and then the cover block 26 synchronously drives the frame bar 27 and the magnetic strip 28 to move back and forth, so that the rotation of the blade 4 can be accelerated by the magnetic force of the magnetic strip 28, and a shielding case 33 is provided, so that the magnetic strip 2 can be lowered during the return movement of the magnetic strip 28 8 and the magnetic force between the electromagnet, and further, the construction waste falls on the closing plate 37, and gradually accumulates. When the total amount of construction waste gradually increases, its gravity is applied on the closing plate 37, and the closing plate 37 rotates downward. The connecting rod 38 pushes the slider 35 to move along the chute 34, and the return spring 36 is squeezed.

The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. Those skilled in the art can easily comprehend the spirit of the present invention based on the above-mentioned embodiments, and make different extensions and changes, but as long as they do not depart from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims (5)

1. The utility model provides a metal recovery unit for building rubbish classification, which comprises a box body (1), a serial communication port, the feed inlet has been seted up at box (1) top, fixedly connected with feeder hopper (2) in the feed inlet, rotationally connect with same main shaft (3) between feeder hopper (2) both ends inner wall, main shaft (3) circumference outer wall fixedly connected with a plurality of annular array distributed leaf plates (4), a plurality of evenly distributed opening (5) have been seted up at leaf plate (4) top, leaf plate (4) inside fixedly connected with electro-magnet, feeder hopper (2) rear end inner wall runs through and is provided with two inner shafts (17) that are bilateral symmetry distribution, the cover is fixed with crushing roller (18) on inner shaft (17), rotate between inner shaft (17) and feeder hopper (2) and be connected, main shaft (3) set up under two inner shafts (17), cover is fixed with slave gear (19) and master gear (20) on two inner shafts (17) respectively, mesh connection between slave gear (19) and master gear (20), motor (21) are fixedly connected with motor (21) inner wall at box (1) rear end inner wall, shake mechanism (4) are connected with on the shake mechanism, shake mechanism is provided with on one of them is fixed connection mechanism;

the shake mechanism comprises guide blocks (8), guide plates (6) are fixedly connected to two sides of each blade plate (4), guide grooves (7) are formed in the outer sides of the guide plates (6), the guide blocks (8) are connected in a sliding mode in the guide grooves (7), ear blocks (9) are fixedly connected to the outer sides of the guide blocks (8), connecting rods (11) are connected to the ear blocks (9) in a rotating mode, ferrules (12) of an integrated structure are arranged at the tops of the connecting rods (11), one split shaft (13) is connected between two ferrules (12) on two adjacent blades (4) in a rotating mode, and one guide spring (10) is fixedly connected between the guide blocks (8) and the inner walls of the guide grooves (7);

the bulk cargo mechanism comprises a plurality of uniformly distributed circular rings (14), the circular rings (14) are rotatably connected to the split shafts (13), and a plurality of bulk cargo rods (15) distributed in an annular array are fixedly connected to the outer wall of the circumference of the circular rings (14);

the section of the bulk material rod (15) is arranged into a regular polygon;

the outer wall of the bulk material rod (15) is provided with two stress parts (16), the two stress parts (16) are distributed in a splayed shape, and the stress parts (16) are positioned at the upper section of the bulk material rod (15);

the utility model discloses a feed hopper, including feeder hopper (2), orientation board (22) of feeder hopper (2) one side outer wall fixedly connected with, orientation groove (23) have been seted up to orientation board (22) front end, sliding connection has orientation piece (24) in orientation groove (23), orientation piece (24) front end fixedly connected with directional pole (25), orientation piece (25) front end fixedly connected with cover piece (26), cover piece (26) bottom fixedly connected with hack lever (27), hack lever (27) inboard fixedly connected with magnetic stripe (28), magnetic stripe (28) set up in the below of leaf board (4), cover piece (26) are connected with drive mechanism.

2. A metal recovery device for construction waste classification as defined in claim 1, wherein: the transmission mechanism comprises a fixed block (29), the fixed block (29) is fixedly connected to the front end of the feed hopper (2), a reciprocating screw (30) is rotationally connected to the fixed block (29), a sleeve block (26) is sleeved on the reciprocating screw (30), a first bevel gear (31) is fixedly connected to one side, away from the sleeve block (26), of the reciprocating screw (30), the front end of the main shaft (3) extends to the outside of the feed hopper (2) and is fixedly connected with a second bevel gear (32), and the first bevel gear (31) and the second bevel gear (32) are connected in a meshed mode.

3. A metal recovery device for construction waste classification as claimed in claim 2, wherein: the rear end of the hack lever (27) is fixedly connected with a shielding shell (33), the cross section of the shielding shell (33) is arc-shaped, the magnetic strip (28) is coated in the shielding shell (33), and the shielding shell (33) is arranged on one side, close to the orientation plate (22), of the magnetic strip (28).

4. A metal recovery device for construction waste classification as defined in claim 1, wherein: the novel automatic feeding device is characterized in that a discharge hole is formed in the bottom of the box body (1), sealing plates (37) are rotatably connected to the inner walls of two sides of the discharge hole, sliding grooves (34) are formed in two sides of the bottom of the box body (1), sliding blocks (35) are slidably connected in the sliding grooves (34), the same reset spring (36) is fixedly connected between the sliding blocks (35) and the inner walls of the sliding grooves (34), and the same connecting rod (38) is rotatably connected between the sliding blocks (35) and the adjacent sealing plates (37).

5. A method of using a metal recovery apparatus for construction waste classification as claimed in any one of claims 1 to 4, wherein: the motor (21) and the electromagnet are started, the output shaft of the motor (21) drives the corresponding inner shaft (17), the main gear (20) and the crushing roller (18) to rotate, the main gear (20) is meshed to drive the driven gear (19) to rotate, the other inner shaft (17) and the crushing roller (18) are synchronously driven to rotate, then the construction waste is input into the feeding hopper (2), the rotating crushing roller (18) crushes the construction waste, the crushed construction waste and metal mixture falls down along the feeding hopper (2), when the mixture falls onto the blade plate (4), the blade plate (4) is driven to rotate around the main shaft (3), the mixture can fall down uniformly, the electromagnet is arranged in the blade plate (4) to absorb the metal in the mixture, the metal is adsorbed on the blade plate (4) uniformly in a rotating state, the opening (5) is arranged on the blade plate (4), the area of the adsorbed metal is increased through the opening (5), the total amount of the adsorbed metal is further increased, the mixture can fall down on the ring (15) is convenient to separate the metal mixture, and the mixture falls down on the ring (14) when the mixture falls down, the mixture falls down on the ring (15) is further, the mixture is separated, and the mixture falls down on the ring (15 is further, and the mixture is scattered down on the ring (15), the rotating bulk material rod (15) breaks up the mixture, thereby facilitating the rapid falling of the construction waste in the mixture, preventing the blockage, the cross section of the bulk material rod (15) is arranged into a regular polygon, as the crushed construction waste is in a powder shape, the contact area between the metal and the construction waste can be reduced on one hand during the beating, when the bulk material rod (15) beats the mixture, the powdery construction waste has smaller movement quantity due to different forms of the construction waste and the metal, the metal has larger movement quantity, the relative movement between the metal and the construction waste can be promoted, thereby further promoting the falling of the construction waste, and ensuring that the metal is uniformly adsorbed, further, when the bulk material rod (15) with a regular polygon cross section beats the metal, the initial position of the beating is different, the metal can be beaten into different directions, thereby further promoting the relative movement between the metal and the construction waste, meanwhile, the whole of the dispersing shaft (13) is subjected to the impact when the mixture falls down, and can move downwards, then the guide block (8) is pushed by the connecting rod (11) to move along the guide groove (7), the whole dispersing shaft (16) is not stressed, namely, the falling force is increased, the whole shaking part (16) is formed, namely the shaking part is formed on the whole body is not stressed, and the whole shaking part (16) is stressed, the whole shaking part is formed, namely the shaking part is stressed by the whole shaking part (15), thereby improve the dynamics of beating, further, when main shaft (3) rotates, drive second bevel gear (32) rotation in step, then mesh and drive first bevel gear (31) and reciprocal screw rod (30) rotation, under reciprocal screw action, make cover piece (26) follow directional pole (25) together with directional piece (24), along directional groove (23) reciprocating motion, then cover piece (26) synchronous drive hack lever (27) and magnetic stripe (28) reciprocating motion, can accelerate the rotation of leaf (4) through the magnetic force of magnetic stripe (28), and be provided with shield shell (33), can be in magnetic stripe (28) return stroke removal, reduce the magnetic force effect between magnetic stripe (28) and the electro-magnet, further, building rubbish falls on closure board (37), and pile up gradually, when building rubbish total amount increases gradually, its gravity is exerted on closure board (37), closure board (37) rotate downwards, promote slider (35) along spout (34) through connecting rod (38) and remove, form the extrusion to reset spring (36), can be through the clearance when two closure boards (37) are carried out to the dust that flies effectively to the blanking.