A waste treatment device for building foundation pit construction

Abstract

The present invention discloses a waste treatment device for building foundation pit construction, which relates to the technical field of building waste treatment and includes a base. A crushing box is fixedly installed above the base, and a crushing and screening assembly is arranged inside the crushing box. The crushing and screening assembly includes a first crushing roller, a second crushing roller and a rotating cylinder which are rotatably installed inside the crushing box, and the first crushing roller and the second crushing roller are engaged with each other; The present invention can perform magnetic separation treatment on the materials crushed by the first crushing roller and the second crushing roller. When the corresponding conductive contact post moves to the position of the second notch, the power supply to the corresponding electromagnet is cut off. At this time, the magnetically selected magnetic metal materials can move to both sides and break away from the first crushing roller and the second crushing roller; Similarly, the arranged rotating cylinder performs secondary magnetic separation treatment on the crushed materials. After the materials are crushed, they will fall on the surface of the rotating cylinder, and the electromagnet inside the rotating cylinder is used for secondary adsorption and screening.

Description

Technical Field

[0001] The present invention relates to the technical field of construction waste treatment, and in particular to a waste treatment device for building foundation pit construction. Background Art

[0002] Through crushing and recycling, construction waste from foundation pit construction can be converted into reusable building materials, reducing the demand for new raw materials; the recycled waste can be sold as recycled aggregate or used for the project itself, reducing construction costs, and also helping enterprises meet environmental protection standards and regulatory requirements. In the prior art, when crushing and recycling construction waste from foundation pits, it generally needs to be subjected to magnetic separation to screen out the magnetic metal materials, and the remaining concrete and sand and gravel are recycled as building aggregates.

[0003] After retrieval, a Chinese patent document with the publication number CN213052036U discloses a waste treatment device for building construction, including a base. On one side of the top of the base, a treatment box is provided. Inside the top of the treatment box, a treatment chamber is provided. Inside the top of the treatment chamber, extrusion rollers are arranged in parallel. Inside the treatment chamber, below the extrusion rollers, shredding rollers are arranged in parallel. Inside the treatment chamber, below the shredding rollers, stirring rods are provided. On the top of one side of the treatment box, motors A are all installed by bolts and the positions of the motors A are parallel. On one side of the treatment box, below the motors A, motors B are all installed by bolts and the positions of the motors B are parallel. On one side of the treatment box, below the motors B, an electromagnetic chuck is arranged through a bolt passing through a reserved opening. On the other side of the treatment box, corresponding to the position of the stirring rod, a motor C is installed by bolts.

[0004] However, the above invention has the following deficiencies: the electromagnetic chuck in the above patent is arranged on one side of the crushing mechanism. During actual operation, it cannot be in full contact with the material, resulting in incomplete magnetic separation; on the other hand, the electromagnetic chuck needs to adsorb magnetic materials for a certain period of time and then release them centrally. After adsorbing a certain amount of magnetic materials, due to the inability to timely feed the materials, the adsorption effect on magnetic materials will gradually decline, thus affecting the overall magnetic separation effect of the materials, so there are limitations. Summary of the Invention

[0005] The purpose of the present invention is to provide a waste treatment device for building foundation pit construction to solve the problems raised in the above background art.

[0006] The technical solution of the present invention is: a waste treatment device for building foundation pit construction, including a base, above which a crushing box is fixedly installed. Inside the crushing box, a crushing and screening assembly is provided. The crushing and screening assembly includes a first crushing roller, a second crushing roller and a rotating cylinder rotatably installed inside the crushing box. The first crushing roller and the second crushing roller are meshed with each other, and the rotating cylinder is located below the first crushing roller and the second crushing roller. On the inner peripheral walls of the first crushing roller, the second crushing roller and the rotating cylinder, U-shaped mounting plates are fixedly installed at equal intervals, and an electromagnet is fixedly installed inside each U-shaped mounting plate. On the outer wall of one side of each electromagnet, a pair of conductive connection posts are fixedly installed. On one side of the first crushing roller and the second crushing roller, a third power connection ring and a fourth power connection ring are coaxially arranged. On the opposite sides of the two third power connection rings and the fourth power connection rings, a first notch is opened, and a second mounting frame is fixedly installed between the third power connection rings and the fourth power connection rings and the outer wall of the crushing box. On one side of the rotating cylinder, a first power connection ring and a second power connection ring are provided. At the bottom ends of the first power connection ring and the second power connection ring, a second notch is opened, and a first mounting frame is fixedly installed between the first power connection ring and the second power connection ring and the outer wall of the crushing box.

[0007] Preferably, both ends of the first crushing roller and the second crushing roller movably penetrate the crushing box. On the outer wall of one end of the first crushing roller and the second crushing roller, a transmission gear ring is fixedly installed, and the two transmission gear rings are meshed with each other.

[0008] Preferably, a double-shaft drive motor is fixedly installed on the outer wall of one side of the crushing box, and a drive gear is fixedly installed on the output shaft of one end of the double-shaft drive motor. The drive gear is meshed with one of the transmission gear rings.

[0009] Preferably, extension end rings are fixedly installed at one ends of the second crushing roller and the rotating cylinder, and a second transmission belt is sleeved on the two extension end rings together.

[0010] Preferably, a feeding port is opened at the top of the crushing box, and a feeding hopper is fixedly installed inside the feeding port. On both sides of the crushing box near the top, a discharging port is opened, and a discharging inclined plate is fixedly installed on the inner wall of one side of the discharging port. At the end of the discharging inclined plate, uniformly distributed bristles are fixedly arranged.

[0011] Preferably, a collection box is fixedly installed on one side of the outer wall of the top of the base, and a pull-out box is slidably inserted at the bottom of the collection box. A bottom support plate is fixedly installed at the inner bottom of the crushing box. The bottom end of the bottom support plate is in an arc shape, and at the end of the arc bottom end, a collection end and an outer guiding inclined plate which are of an integral structure are arranged in sequence. On both sides of the crushing box, inclined guiding side plates are fixedly arranged, and the end of the guiding side plate is located above the collection box. On both sides of the crushing box, slag discharging ports are opened, and an inclined slag guiding plate is fixedly connected inside the slag discharging ports.

[0012] Preferably, a feeding shaft coaxially arranged with the bottom end of the arc is rotatably installed inside the crushing box, and a screw blade is fixedly arranged on the outer wall of the feeding shaft inside the crushing box. Through openings communicating with the bottom end of the arc are formed on one side of both the crushing box and the collecting box. A bracket is fixedly installed on the top outer wall of the base, and the feeding shaft is rotatably connected to the bracket. A first transmission belt is sleeved on one end of the feeding shaft and the other output shaft of the dual-shaft drive motor.

[0013] Preferably, a material receiving end is arranged on the outer peripheral wall of the rotating cylinder. The material receiving end includes a plurality of end frames fixedly arranged on the outer peripheral wall of the rotating cylinder. Movable end plates are arranged inside the end frames, and a rubber film is fixedly connected between the inner peripheral wall of the end frame and the movable end plate. A plurality of vibration springs are fixedly connected between the movable end plate and the rotating cylinder.

[0014] Preferably, uniformly distributed strip-shaped through slots are formed on the outer wall of one side of each U-shaped mounting plate.

[0015] Preferably, a side box is fixedly installed on one side of the crushing box close to the collecting box. A hanging frame coaxially arranged with the first crushing roller and the second crushing roller is arranged on the other side of the crushing box, and a blower is fixedly installed inside the hanging frame. The top end of the hanging frame is fixedly connected to the outer wall of the crushing box.

[0016] The present invention provides a waste treatment device for building foundation pit construction through improvement. Compared with the prior art, it has the following improvements and advantages:

[0017] First: The opposite rotation of the first crushing roller and the second crushing roller of the present invention can realize the extrusion and crushing of materials. At the same time, by providing the third slip ring and the fourth slip ring, the electromagnets inside the first crushing roller and the second crushing roller can be energized through the conductive contact posts. When the electromagnets are energized, magnetic separation treatment can be carried out on the materials generated by the crushing of the first crushing roller and the second crushing roller. Specifically, when the corresponding conductive contact post moves to the position of the second notch, the power supply to the corresponding electromagnet is cut off. At this time, the magnetic metal materials selected by magnetic separation can fall off the first crushing roller and the second crushing roller when moving to both sides. Similarly, the rotating cylinder provided performs magnetic separation treatment on the crushed materials again. After the materials are crushed, they will fall on the surface of the rotating cylinder, and the electromagnets inside the rotating cylinder are used for adsorption and screening again. The non-magnetic materials flow down from both sides, while the magnetic materials are adsorbed on the surface of the rotating cylinder. When the electromagnet on the rotating cylinder moves to directly below, the conductive contact post on one side of the electromagnet is located in the area of the first notch, so the power supply to the electromagnet at this position is cut off, and the materials selected by magnetic separation can fall.

[0018] Second: The material receiving end provided by the present invention can receive materials. At the same time, with the cooperation of the rubber film and the vibration springs provided, the movable end plate can be vibrated, so that the materials can fully contact the movable end plate, thereby improving the magnetic separation effect of the electromagnet on the materials. Brief Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Is a schematic three-dimensional structure diagram of the overall first perspective of the present invention;

[0021] Figure 2 Is a schematic three-dimensional structure diagram of the overall second perspective of the present invention;

[0022] Figure 3 Is a schematic side view structure diagram of the present invention;

[0023] Figure 4 Is a schematic exploded structure diagram of the side box of the present invention;

[0024] Figure 5 Is of the present invention Figure 4 Schematic enlarged structure diagram at position A;

[0025] Figure 6 Is a schematic exploded structure diagram of the hanger of the present invention;

[0026] Figure 7 Is of the present invention Figure 6 Schematic enlarged structure diagram at position B;

[0027] Figure 8 Is a schematic three-dimensional structure diagram of the first crushing roller and the second crushing roller of the present invention;

[0028] Figure 9 Is a schematic cross-sectional view structure diagram of the rotating drum of the present invention;

[0029] Figure 10 Is of the present invention Figure 9 Schematic enlarged structure diagram at position C.

[0030] Reference Numerals:

[0031] 1. Base; 2. Crushing box; 201. Feeding hopper; 202. Side box; 203. Discharge opening; 204. Discharge inclined plate; 205. Brush bristles; 3. Material conveying shaft; 301. Bracket; 302. Screw blade; 4. Guide material side plate; 5. Collection box; 501. Removable box; 6. Crushing roller 1; 601. Crushing roller 2; 7. Hanger; 701. Fan; 8. Double-shaft drive motor; 801. Transmission belt 1; 802. Transmission gear ring; 803. Driving gear; 9. Rotary drum; 10. U-shaped mounting plate; 11. Electromagnet; 12. Conductive contact post; 13. Power connection ring 1; 14. Power connection ring 2; 15. Mounting frame 1; 16. Power connection ring 3; 17. Power connection ring 4; 18. Mounting frame 2; 19. Slag discharge opening; 20. Slag guide plate; 21. Arc bottom end; 22. Collection end; 23. Outer guiding inclined plate; 24. Bottom support plate; 25. Transmission belt 2; 26. Extension end ring; 27. Material receiving end; 271. End frame; 272. Rubber membrane; 273. Movable end plate; 274. Vibration spring; 28. Strip-shaped through slot. Detailed implementation manner

[0032] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. 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] The present invention provides a waste treatment device for building foundation pit construction by improvement. The technical solution of the present invention is as follows:

[0034] As Figures 1 to 10As shown in the figure, an embodiment of the present invention provides a waste treatment device for building foundation pit construction, including a base 1. Above the base 1, a crushing box 2 is fixedly installed. Inside the crushing box 2, a crushing and screening assembly is provided. The crushing and screening assembly includes a first crushing roller 6, a second crushing roller 601 and a rotating cylinder 9 rotatably installed inside the crushing box 2. The first crushing roller 6 and the second crushing roller 601 are engaged with each other. The rotating cylinder 9 is located below the first crushing roller 6 and the second crushing roller 601. On the inner peripheral walls of the first crushing roller 6, the second crushing roller 601 and the rotating cylinder 9, U-shaped mounting plates 10 are fixedly installed at equal intervals, and an electromagnet 11 is fixedly installed inside each U-shaped mounting plate 10. On the outer wall of one side of each electromagnet 11, a pair of conductive connection posts 12 are fixedly installed. On one side of the first crushing roller 6 and the second crushing roller 601, a third slip ring 16 and a fourth slip ring 17 are coaxially arranged. On the opposite sides of the two third slip rings 16 and the fourth slip rings 17, a first notch is opened, and a second mounting frame 18 is fixedly installed between the third slip ring 16, the fourth slip ring 17 and the outer wall of the crushing box 2. On one side of the rotating cylinder 9, a first slip ring 13 and a second slip ring 14 are arranged. At the bottom ends of the first slip ring 13 and the second slip ring 14, a second notch is opened, and a first mounting frame 15 is fixedly installed between the first slip ring 13, the second slip ring 14 and the outer wall of the crushing box 2.

[0035] Through this setting, the opposite rotation of the first crushing roller 6 and the second crushing roller 601 can realize the extrusion and crushing of materials. At the same time, by means of the arranged third slip ring 16 and the fourth slip ring 17, the electromagnets 11 inside the first crushing roller 6 and the second crushing roller 601 can be energized through the conductive connection posts 12. When the electromagnets 11 are energized, the materials generated by the crushing of the first crushing roller 6 and the second crushing roller 601 can be subjected to magnetic separation treatment. Specifically, when the corresponding conductive connection posts 12 move to the position of the second notch, the power supply to the corresponding electromagnet 11 is cut off. At this time, the magnetically selected magnetic metal materials can move to both sides and break away from the first crushing roller 6 and the second crushing roller 601.

[0036] Similarly, the arranged rotating cylinder 9 performs secondary magnetic separation treatment on the crushed materials. After the materials are crushed, they will fall on the surface of the rotating cylinder 9, and the electromagnets 11 inside the rotating cylinder 9 are used for secondary adsorption and screening. The non-magnetic materials flow down from both sides, while the magnetic materials are adsorbed on the surface of the rotating cylinder 9. When the electromagnet 11 on the rotating cylinder 9 moves to directly below, the conductive connection post 12 on one side of the electromagnet 11 is located in the area of the first notch, thereby cutting off the power supply to the electromagnet 11 at this position, and the magnetically selected materials can fall.

[0037] As a further solution of the present invention, both ends of the first crushing roller 6 and the second crushing roller 601 movably penetrate through the crushing box 2. On the outer wall of one end of the first crushing roller 6 and the second crushing roller 601, a transmission gear ring 802 is fixedly installed, and the two transmission gear rings 802 are engaged with each other.

[0038] Furthermore, a dual-axis drive motor 8 is fixedly installed on one outer wall side of the crushing box 2, and a drive gear 803 is fixedly installed on one output shaft end of the dual-axis drive motor 8. The drive gear 803 meshes with one of the transmission gear rings 802.

[0039] With the above structure, when the dual-axis drive motor 8 is controlled to start, it can drive the drive gear 803 to rotate, and cooperate with the provided transmission gear ring 802 to drive the first crushing roller 6 and the second crushing roller 601 to rotate towards each other, so as to realize the crushing of materials.

[0040] Furthermore, extension end rings 26 are fixedly installed at one ends of the second crushing roller 601 and the rotating cylinder 9, and a second transmission belt 25 is sleeved on the two extension end rings 26 together; through this setting, when the second crushing roller 601 rotates, it can drive the rotating cylinder 9 to rotate synchronously in cooperation with the second transmission belt 25.

[0041] As a further solution of the present invention, a feeding port is opened at the top of the crushing box 2, and a feeding hopper 201 is fixedly installed in the feeding port. Both sides of the crushing box 2 near the top are provided with discharge openings 203, and a discharge inclined plate 204 is fixedly installed on one inner wall side of each discharge opening 203. Uniformly distributed brush hairs 205 are fixedly arranged at the end of the discharge inclined plate 204.

[0042] Through this setting, during actual operation, materials can be put between the first crushing roller 6 and the second crushing roller 601 through the feeding hopper 201. At the same time, when the magnetically selected magnetic materials separate on the opposite sides, they can flow out through the discharge openings 203; at the same time, the brush hairs 205 at one end of the discharge inclined plate 204 can convey the surfaces of the first crushing roller 6 and the second crushing roller 601 when they rotate, removing the soil and sand in the magnetic materials and reducing the carrying of miscellaneous materials.

[0043] As a further solution of the present invention, a collection box 5 is fixedly installed on one side of the top outer wall of the base 1, and a draw box 501 is slidably inserted at the bottom of the collection box 5. A bottom support plate 24 is fixedly installed at the inner bottom of the crushing box 2. The bottom end of the bottom support plate 24 is arranged as an arc bottom end 21, and a collection end 22 and an outer guiding inclined plate 23 which are of an integral structure are sequentially arranged at the end of the arc bottom end 21. Guide material side plates 4 which are inclined are fixedly arranged on both sides of the crushing box 2, and the ends of the guide material side plates 4 are located above the collection box 5. Discharge slag openings 19 are opened on both sides of the crushing box 2, and inclined slag guide plates 20 are fixedly connected in the discharge slag openings 19.

[0044] With this setting, the set bottom support plate 24 is used to guide and collect materials respectively. Specifically, the set outer guiding inclined plate 23 is used to guide non-magnetic impurities to the slag discharge port 19; the materials discharged from the blanking inclined plate 204 can fall into the guiding side plates 4 on both sides and finally fall into the extraction box 501 in the collection box 5; at the same time, the non-magnetic materials screened by the rotary drum 9 can pass through the outer guiding inclined plate 23, and be discharged through the slag discharge port 19 and the slag guiding plate 20.

[0045] As a further solution of the present invention, a feeding shaft 3 coaxially arranged with the arc bottom end 21 is rotatably installed inside the crushing box 2, and a screw blade 302 is fixedly arranged on the outer wall of the feeding shaft 3 inside the crushing box 2. Through openings communicating with the arc bottom end 21 are formed on one side of both the crushing box 2 and the collection box 5. To improve the installation stability of the feeding shaft 3, a bracket 301 is fixedly installed on the top outer wall of the base 1, and the feeding shaft 3 is rotatably connected to the bracket 301. One end of the feeding shaft 3 and the other output shaft of the double-shaft drive motor 8 are jointly sleeved with a first transmission belt 801.

[0046] With the above structure, when the double-shaft drive motor 8 operates, it can drive the feeding shaft 3 to rotate through the first transmission belt 801. At this time, the feeding shaft 3 cooperates with the screw blade 302 to convey the materials in the arc bottom end 21 and discharge the materials into the extraction box 501 at one end.

[0047] As a further solution of the present invention, a material receiving end 27 is arranged on the outer peripheral wall of the rotary drum 9. The material receiving end 27 includes a plurality of end frames 271 fixedly arranged on the outer peripheral wall of the rotary drum 9. An active end plate 273 is arranged in each end frame 271, and a rubber film 272 is fixedly connected between the inner peripheral wall of the end frame 271 and the active end plate 273. A plurality of vibration springs 274 are fixedly connected between the active end plate 273 and the rotary drum 9.

[0048] With this setting, the set material receiving end 27 can receive materials. At the same time, with the cooperation of the set rubber film 272 and the vibration springs 274, the active end plate 273 can be vibrated, so that the materials can fully contact the active end plate 273, thereby improving the further magnetic separation effect of the electromagnet 11 on the materials.

[0049] As a further solution of the present invention, uniformly distributed strip-shaped through slots 28 are formed on one outer wall of each U-shaped mounting plate 10.

[0050] Furthermore, a side box 202 is fixedly installed on one side of the crushing box 2 close to the collection box 5. On the other side of the crushing box 2, a hanger 7 coaxially arranged with the first crushing roller 6 and the second crushing roller 601 is provided, and a blower 701 is fixedly installed in each hanger 7. The top end of the hanger 7 is fixedly connected to the outer wall of the crushing box 2.

[0051] With the above structure, during actual operation, two blowers 701 can be controlled to start, and air is blown into the first crushing roller 6 and the second crushing roller 601. The air enters the side box 202 and then is blown out through the rotating cylinder 9, realizing the cooling treatment of the first crushing roller 6, the second crushing roller 601, and the rotating cylinder 9 to prevent overheating. At the same time, with the provided strip-shaped through grooves 28, the heat exchange effect between the U-shaped mounting plate 10 and the air can be improved, ensuring the cooling effect on the electromagnet 11.

[0052] The specific working method is as follows: During actual use, the double-shaft drive motor 8 is controlled to start, driving the drive gear 803 to rotate. With the provided transmission gear ring 802, the first crushing roller 6 and the second crushing roller 601 can be driven to rotate towards each other. The rotation of the first crushing roller 6 and the second crushing roller 601 towards each other realizes the extrusion and crushing of the material. At the same time, through the provided third slip ring 16 and the fourth slip ring 17, the electromagnets 11 inside the first crushing roller 6 and the second crushing roller 601 are energized through the conductive contact posts 12. When the electromagnets 11 are energized, magnetic separation treatment is carried out on the materials crushed by the first crushing roller 6 and the second crushing roller 601. Specifically, when the corresponding conductive contact post 12 moves to the position of the second notch, the power supply to the corresponding electromagnet 11 is cut off. At this time, the magnetically selected magnetic metal materials can move to both sides and then separate from the first crushing roller 6 and the second crushing roller 601.

[0053] Similarly, the provided rotating cylinder 9 performs secondary magnetic separation treatment on the crushed materials. After the materials are crushed, they will fall on the surface of the rotating cylinder 9, and the electromagnets 11 inside the rotating cylinder 9 are used for secondary adsorption and screening. The non-magnetic materials flow down from both sides, while the magnetic materials are adsorbed on the surface of the rotating cylinder 9. When the electromagnet 11 on the rotating cylinder 9 moves directly below, the conductive contact post 12 on one side of the electromagnet 11 is located in the area of the first notch, thus cutting off the power supply to the electromagnet 11 at this position, and the magnetically selected materials can fall.

[0054] When the magnetically separated magnetic materials are separated from the opposite sides of the first crushing roller 6 and the second crushing roller 601, they can flow out through the blanking port 203; at the same time, the bristles 205 at one end of the blanking inclined plate 204 convey the surfaces of the first crushing roller 6 and the second crushing roller 601 during rotation, removing the soil and sand in the magnetic materials and reducing the carrying of miscellaneous materials; the bottom support plate 24 is provided to respectively guide and collect the materials. Specifically, the outer guiding inclined plate 23 is provided to guide the non-magnetic impurities to the slag discharge port 19; the materials discharged from the blanking inclined plate 204 can fall into the guide side plates 4 on both sides and finally fall into the extraction box 501 in the collection box 5; at the same time, the non-magnetic materials screened by the rotating drum 9 can pass through the outer guiding inclined plate 23, the slag discharge port 19 and the slag guiding plate 20 and be discharged; when the double-shaft drive motor 8 operates, it drives the feeding shaft 3 through the first transmission belt 801. At this time, the feeding shaft 3 cooperates with the auger blade 302 to convey the materials in the arc bottom end 21 and discharge the materials into the extraction box 501 at one end; the receiving end 27 is provided to receive the materials. At the same time, with the cooperation of the rubber film 272 and the vibration spring 274, the movable end plate 273 generates vibration, so that the materials are fully in contact with the movable end plate 273, thereby improving the further magnetic separation effect of the electromagnet 11 on the materials.

[0055] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste material treatment device for construction pits, comprising a base (1), a crushing box (2) being fixedly mounted above the base (1), characterized in that: A crushing and screening assembly is arranged inside the crushing box (2), and the crushing and screening assembly comprises a crushing roller 1 (6), a crushing roller 2 (601) and a rotating drum (9) which are rotatably mounted inside the crushing box (2), the crushing roller 1 (6) and the crushing roller 2 (601) being engaged with each other, the rotating drum (9) being located below the crushing roller 1 (6) and the crushing roller 2 (601), and the inner peripheral walls of the crushing roller 1 (6), the crushing roller 2 (601) and the rotating drum (9) are all fixedly mounted with U-shaped mounting plates (10) which are distributed at equal distances, and an electromagnet (11) is fixedly mounted inside each U-shaped mounting plate (10), and a pair of conductive contacts are fixedly mounted on one side outer wall of each electromagnet (11). The column (12) is provided with a coaxially arranged power connection ring 3 (16) and a power connection ring 4 (17) on one side of the crushing roller 1 (6) and the crushing roller 2 (601), and a notch 1 is provided on the opposite sides of the two power connection rings 3 (16) and 4 (17), and a mounting frame 2 (18) is fixedly installed between the power connection ring 3 (16) and the power connection ring 4 (17) and the outer wall of the crushing box (2), and a power connection ring 1 (13) and a power connection ring 2 (14) are provided on one side of the rotating drum (9), and a notch 2 is provided at the bottom ends of the power connection ring 1 (13) and the power connection ring 2 (14), and a mounting frame 1 (15) is fixedly installed between the power connection ring 1 (13) and the power connection ring 2 (14) and the outer wall of the crushing box (2); The crushing box (2) is provided with a feeding port at the top, and a feeding hopper (201) is fixedly installed in the feeding port, and both sides of the crushing box (2) near the top are provided with feeding ports (203), and a feeding inclined plate (204) is fixedly installed on the inner wall of one side of the feeding port (203), and evenly distributed bristles (205) are fixedly provided on the end of the feeding inclined plate (204), and a collecting box (5) is fixedly installed on one side of the top outer wall of the base (1), and a draw box (501) is slidably inserted at the bottom of the collecting box (5), and the crushing box The inner bottom of the crushing box (2) is fixedly mounted with a bottom support plate (24), the bottom end of the bottom support plate (24) is arranged in an arc bottom end (21), and the ends of the arc bottom end (21) are sequentially provided with a collecting end (22) and an outer guide inclined plate (23) of an integral structure, both sides of the crushing box (2) are fixedly provided with an inclined material guide side plate (4), and the ends of the material guide side plates (4) are located above the collecting box (5), both sides of the crushing box (2) are provided with a slag discharge port (19), and the slag discharge port (19) is fixedly connected with an inclined guide side plate (22). The crushing box (2) is provided with a feed shaft (3) coaxially arranged with the arc bottom end (21) and rotatably mounted inside the crushing box (2), and a screw blade (302) is fixedly arranged on the outer wall of the feed shaft (3) located inside the crushing box (2), and a through opening communicating with the arc bottom end (21) is opened on one side of the crushing box (2) and the collecting box (5), a bracket (301) is fixedly mounted on the top outer wall of the base (1), and the feed shaft (3) is rotatably connected to the bracket (301), and one end of the feed shaft (3) is connected to a dual-axis drive motor ( The output shaft at the other end of the rotating drum (8) is sleeved with a transmission belt 1 (801), the outer peripheral wall of the rotating drum (9) is provided with a material receiving end (27), the material receiving end (27) comprises a plurality of end frames (271) fixedly arranged on the outer peripheral wall of the rotating drum (9), each end frame (271) is provided with a movable end plate (273), a rubber membrane (272) is fixedly connected between the inner peripheral wall of the end frame (271) and the movable end plate (273), and a plurality of vibration springs (274) are fixedly connected between the movable end plate (273) and the rotating drum (9).

2. A waste treatment device for construction pit according to claim 1, characterized in that: Both ends of the crushing roller one (6) and the crushing roller two (601) are movably inserted through the crushing box (2), and a transmission gear ring (802) is fixedly mounted on the outer wall of one end of the crushing roller one (6) and the crushing roller two (601), and the two transmission gear rings (802) are meshed with each other.

3. A waste treatment device for construction pit according to claim 1, characterized in that: A double-shaft drive motor (8) is fixedly mounted on an outer wall of one side of the crushing box (2), and a drive gear (803) is fixedly mounted on an output shaft at one end of the double-shaft drive motor (8), and the drive gear (803) is meshed with one of the transmission gear rings (802).

4. A waste treatment device for construction pit according to claim 1, characterized in that: An extension end ring (26) is fixedly mounted on one end of the second crushing roller (601) and the rotating drum (9), and a second transmission belt (25) is sleeved on the two extension end rings (26).

5. The waste treatment device for construction pit according to claim 1 is characterized in that: One side outer wall of each U-shaped mounting plate (10) is provided with evenly distributed strip-shaped through grooves (28).

6. A waste treatment device for construction pit according to claim 1, characterized in that: A side box (202) is fixedly mounted on one side of the crushing box (2) close to the collecting box (5), and a hanger (7) is coaxially arranged with the first crushing roller (6) and the second crushing roller (601) is arranged on the other side of the crushing box (2), and a fan (701) is fixedly mounted inside the hanger (7), and the top end of the hanger (7) is fixedly connected to the outer wall of the crushing box (2).

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