Equipment for manufacturing recycled concrete aggregate from building solid waste

Abstract

The invention relates to the technical field of solid waste utilization and manufacturing devices, and discloses equipment for manufacturing recycled concrete aggregate from building solid waste, which comprises a feeding hopper, a bottom cover is fixedly mounted on one side of the bottom of the feeding hopper, a material rotating cylinder is fixedly mounted on the top of the bottom cover, a treatment box is fixedly mounted on one side of the bottom cover, and a third motor is fixedly connected to one side of the treatment box. A fixing rod is slidably connected to the treatment box, a connecting rod is fixedly mounted at the top of the fixing rod, a rack is fixedly connected to one end of the connecting rod, a main driving gear is connected to an output shaft of the third motor in a sleeving mode, and the main driving gear and the rack are in meshing transmission. The aggregates can be mutually polished and scattered by means of edges and corners of the aggregates, the sizes of particles of the aggregates are refined through friction polishing of the aggregates in the material washing process, and the aggregates can be directly used after being polished.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste utilization and production equipment, in particular to equipment for producing recycled concrete aggregate from construction solid waste. Background Art

[0002] Solid construction waste mainly includes abandoned concrete blocks, abandoned asphalt concrete blocks, mortar, concrete and broken bricks scattered during the construction process, as well as masonry and concrete fragments produced by grooving, reinforced concrete pile heads cut by piling, metal, bamboo and wood, waste generated by decoration, various packaging materials and other wastes. These wastes can be transformed into materials or products with reuse value through a series of processing and treatment. The process of making recycled concrete aggregate from solid construction waste is an important link in the recycling of resources. Recycled concrete refers to the waste concrete blocks that have been crushed, cleaned and graded. It is an environmentally friendly and sustainable building material. The existing recycled concrete aggregate equipment, During the manufacturing process, it is usually processed by a single screening structure, usually with a single screen surface structure, so that the concrete blocks are mixed with impurities such as steel bars. When processing large amounts or high-density construction solid waste, the crushing, screening and other capabilities of the equipment may not be sufficient to meet production needs, resulting in low production efficiency, which will affect the quality and particle size distribution of the recycled aggregate, and thus affect the performance of the recycled concrete; therefore, it affects the molding density of the concrete. The uneven distribution of aggregate particle size may cause a large number of bubbles to be generated during concrete molding, affecting the structural strength of the concrete. Therefore, we propose a device for making recycled concrete aggregate from construction solid waste to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a device for producing recycled concrete aggregate from construction solid waste to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a device for making recycled concrete aggregate from construction solid waste, comprising a hopper, a bottom cover is fixedly installed on one side of the bottom of the hopper, a rotating barrel is fixedly installed on the top of the bottom cover, a processing box is fixedly installed on one side of the bottom cover, a third motor is fixedly connected to one side of the processing box, a fixed rod is slidably connected to the processing box, a connecting rod is fixedly installed on the top of the fixed rod, a rack is fixedly connected to one end of the connecting rod, a main driving gear is sleeved on the output shaft of the third motor, the main driving gear and the rack are meshed for transmission, a movable plate is fixedly connected to the bottom of the fixed rod, a fixed plate is fixedly installed on the top of the processing box, a plurality of material penetration holes are opened on the fixed plate, a plurality of classifiers for absorbing and separating metal debris are fixedly connected to the movable plate, a heater is fixedly installed on the top of the processing box, a plurality of heating pipes are fixedly connected to the bottom of the heater, the heating pipes pass through the processing box, a liquid inlet pipe is fixedly connected to one side of the processing box, and the liquid inlet pipe is connected to a water pump.

[0005] Preferably, a control box is fixedly connected to the other side of the processing box, a light sensor is arranged between the rack and the control box, the light sensor and the processing box are fixedly connected together, and a photosensitive sheet is fixedly connected to the bottom of the rack, and a drain pipe is fixedly connected to the bottom of the processing box.

[0006] Preferably, a processing and screening area is set between the fixed plate and the movable plate, a humidity sensor is fixedly connected to the side of the processing box next to the processing and screening area, a first sealing block is detachably connected to the side of the processing and screening area, and a debris removal area is set between the fixed plate and the top of the processing box, and a second sealing block is detachably connected to the side of the debris removal area.

[0007] Preferably, the classifier includes a plurality of base columns fixedly mounted on a movable plate, an electromagnet is fixedly connected to the top of the base column, each electromagnet is electrically connected to a light sensor, a movable plate is slidably connected to the electromagnet, extension rods are fixedly connected to the bottom of both ends of the movable plate, a discharge rod is fixedly connected to the bottom of each extension rod, a fixed plate is fixedly mounted between two extension rods on the same electromagnet, the fixed plate and the electromagnet are slidably connected, and a spring is fixedly connected between the fixed plate and the movable plate.

[0008] Preferably, the diameters of both ends of the drain rod are larger than the diameter of the middle portion, so that when the drain rod descends, the middle portion thereof is incorporated into the movable plate, thereby realizing the drainage function between the movable plate and the fixed plate.

[0009] Preferably, a second gear is rotatably connected to the top of the rotating barrel, a fixing bar is fixedly connected to one side of the top of the bottom cover, a second motor is fixedly connected to one end of the fixing bar, a first gear is sleeved on the output shaft of the second motor, the first gear and the second gear are meshed together, a spiral piece is fixedly installed on the bottom of the second gear, a plurality of feed ports are opened at the bottom of the rotating barrel, a plurality of grinders are installed on the outer ring of the rotating barrel, the inner ring of each grinder faces the inside of the rotating barrel, and the inner ring of the grinder is elastically connected to a grinding sheet.

[0010] Preferably, a first motor is fixedly installed at one end of the feed hopper, a bite roller is sleeved on the output shaft of the first motor, the bite roller and the feed hopper are rotatably connected, first cylinders are fixedly connected at both ends inside the feed hopper, and a fixed stirring roller is connected between the two first cylinders.

[0011] Preferably, the fixed stirring roller and the bite roller are both made of metal.

[0012] Preferably, a fan is fixedly installed at the other end of the hopper, one end of the fan is fixedly connected to a suction pipe, a connecting cover is fixedly installed on one side of the inside of the hopper, one end of the suction pipe is fixedly connected to the connecting cover, a plurality of suction holes are provided on the other side of the bottom cover, the other end of the suction pipe is fixedly connected to a drainage pipe, one end of the drainage pipe is fixedly connected to a branch pipe, one end of the branch pipe passes through the inside of one side of the bottom cover, and one end of the branch pipe is detachably connected to a sewage interception pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the movable plate of the present invention rises, the water pump can be turned on at the same time to add water or other liquids for auxiliary grinding between the fixed plate and the movable plate, and then the third motor is driven to reverse, so that the aggregates can grind and break up each other by relying on their own edges and corners. After processing for a period of time, the third motor is driven to rotate forward again, so that the aggregates are in a compressed state between the fixed plate and the movable plate, and the heater is turned on again to heat the inside of the processing box. After heating for a certain period of time, the heating is stopped to maintain the humidity between the aggregates. During the heating process, the parameters on the humidity sensor can be observed in real time. When the standard is reached, the heater is turned off, and then the first sealing block is manually removed from the processing box to collect the aggregates. Not only does the friction and grinding of the aggregates themselves refine the particle size of the aggregates themselves during the washing process, but the aggregates can also be used directly after grinding, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the feed hopper of the present invention; Figure 3 It is a schematic diagram of the structure of the present invention from another perspective; Figure 4 This is a schematic diagram of the structure of the rotary barrel of the present invention; Figure 5 This is a schematic diagram of the internal structure of the processing box of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle; Figure 7 It is a schematic diagram of the connection structure between the movable plate and the classifier of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0015] In the figure: 1-feeding hopper; 2-fan; 3-fixed stirring roller; 4-suction pipe; 5-bite roller; 6-first motor; 7-first cylinder; 8-connecting cover; 9-drainage pipe; 901-branch pipe; 902-sewer interception pipe; 10-bottom cover; 11-rotating barrel; 1101-spiral sheet; 1102-feeding port; 12-fixed bar; 13-second motor; 14-first gear; 15-second gear; 16-grinding machine; 1601-grinding sheet; 17-processing box ; 18-control box; 19-rack; 20-light sensor; 21-drain pipe; 22-humidity sensor; 23-third motor; 24-heater; 25-liquid inlet pipe; 26-first sealing block; 27-second sealing block; 28-heating tube; 29-movable plate; 30-classifier; 31-fixed plate; 32-fixed rod; 33-connecting rod; 34-electromagnet; 35-movable sheet; 36-fixed sheet; 37-extension rod; 38-spring; 39-drain rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-8, the present invention provides a technical solution: a device for producing recycled concrete aggregates from construction solid waste, including a feeding hopper 1. One side of the bottom of the feeding hopper 1 is fixedly installed with a bottom cover 10. The top of the bottom cover 10 is fixedly installed with a transfer cylinder 11. One side of the bottom cover 10 is fixedly installed with a processing box 17. One side of the processing box 17 is fixedly connected to a third motor 23. A fixed rod 32 is slidably connected to the processing box 17. The top of the fixed rod 32 is fixedly installed with a connecting rod 33. One end of the connecting rod 33 is fixedly connected to a rack 19. A main driving gear is sleeved on the output shaft of the third motor 23. The main driving gear and the rack 19 are engaged and driven. The bottom of the fixed rod 32 is fixedly connected to a movable plate 29. A fixed plate 31 is fixedly installed on the inner top of the processing box 17. A plurality of material passing holes are formed in the fixed plate 31. A plurality of classifiers 30 for absorbing and separating metal impurities are fixedly connected to the movable plate 29. A heater 24 is fixedly installed on the top of the processing box 17. The bottom of the heater 24 is fixedly connected to a plurality of heating pipes 28. The heating pipes 28 pass through the processing box 17. One side of the processing box 17 is fixedly connected to a liquid inlet pipe 25. The liquid inlet pipe 25 is connected to a water pump; the area between the fixed plate 31 and the movable plate 29 is set as a processing and screening area. A humidity sensor 22 is fixedly connected to the side of the processing box 17 beside the processing and screening area. A first sealing block 26 is detachably connected to the side of the processing and screening area. The area between the fixed plate 31 and the inner top of the processing box 17 is set as a waste discharging area. A second sealing block 27 is detachably connected to the side of the waste discharging area;First, when the aggregate is put into the processing box 17, it will be collected through the penetration holes on the fixed plate 31. The penetration holes can be regarded as a mesh structure for screening the particle size of the aggregate. Aggregates with larger particle sizes cannot pass through the penetration holes directly, while aggregates with smaller particle sizes pass through the penetration holes and enter between the fixed plate 31 and the movable plate 29 for accumulation. When too much aggregate is accumulated on the movable plate 29, the feeding into the processing box 17 is stopped, and the third motor 23 is turned on to rotate. When the third motor 23 rotates, it drives the main drive gear to rotate. The main drive gear rotates to drive the rack 19 to rise. In this process, the movable plate 29 is stuck to the inner wall of the processing box 17 on all sides, thereby forming a movable piston. When the movable plate 29 rises, the water pump can be turned on at the same time to Water or other liquids for auxiliary grinding are added, and then the third motor 23 is driven to reverse, so that the aggregates can grind and break up each other by their own edges and corners. After processing for a period of time, the third motor 23 is driven to rotate forward again, so that the aggregates are in a compressed state between the fixed plate 31 and the movable plate 29, and the heater 24 is turned on again to heat the inside of the processing box 17. After heating for a certain period of time, the heating is stopped to maintain the humidity between the aggregates. During the heating process, the parameters on the humidity sensor 22 can be observed in real time. When the standard is reached, the heater 24 is turned off, and then the first sealing block 26 is manually removed from the processing box 17 to collect the aggregates. Not only does the aggregate itself rub and grind to refine the size of the aggregate particles during the washing process, but the aggregate can also be used directly after grinding, which is simple and convenient. When the aggregate passes through the penetration holes, the metal impurities contained in the aggregate can be directly absorbed by the classifier 30 .

[0018] Specifically, the other side of the processing box 17 is fixedly connected to the control box 18, a light sensor 20 is arranged between the rack 19 and the control box 18, the light sensor 20 and the processing box 17 are fixedly connected together, and a photosensitive sheet is fixedly connected to the bottom of the rack 19, and a drain pipe 21 is fixedly connected to the bottom of the processing box 17. When the classifier 30 passes through the material hole when rising, the photosensitive sheet on the rack 19 contacts the light sensor 20, the classifier 30 is powered off, and the metal impurities are discharged to the fixed plate 31 for collection.

[0019] Specifically, the classifier 30 includes a plurality of bottom columns fixedly mounted on the movable plate 29, the top of the bottom column is fixedly connected to an electromagnet 34, each electromagnet 34 is electrically connected to the optical sensor 20, a movable sheet 35 is slidably connected to the electromagnet 34, and extension rods 37 are fixedly connected to the bottom of both ends of the movable sheet 35, and a drainage rod 39 is fixedly connected to the bottom of each extension rod 37, and a fixed sheet 36 is fixedly mounted between two extension rods 37 located on the same electromagnet 34, the fixed sheet 36 is slidably connected to the electromagnet 34, and a spring 38 is fixedly connected between the fixed sheet 36 and the movable plate 29; the diameters of the two ends of the drainage rod 39 are larger than the diameter of the middle part, so that the middle part of the drainage rod 39 is incorporated into the movable plate 29 when it descends, realizing the drainage function between the movable plate 29 and the fixed plate 31, and after the material is dropped from the penetration hole, as the third motor 23 is turned on, the movable plate 29 is repeatedly raised and lowered, and the movable plate 2 During the rising process, the electromagnet 34 is passed through the material hole. During the process of the electromagnet 34 passing through the material hole, the optical sensor 20 contacts the photosensitive sheet. After being sensed, the optical sensor 20 sends information to the background control box 18 to cut off the power of the electromagnet 34 and discharge the metal debris between the movable plate 29 and the fixed plate 31. After the aggregate between the movable plate 29 and the fixed plate 31 is compressed, the water between the movable plate 29 and the fixed plate 31 cannot be discharged. Therefore, when the movable sheet 35 is subjected to the pressure from the bottom of the fixed plate 31, it tends to fall, causing the extension rod 37 to fall, and the spring 38 is in a compressed state, so that when the drain rod 39 falls, its middle part is incorporated into the movable plate 29, realizing the drainage function between the movable plate 29 and the fixed plate 31, and discharging the water between the movable plate 29 and the fixed plate 31, so that the heater 24 can heat the inside of the processing box 17 and improve the processing efficiency.

[0020] Furthermore, a second gear 15 is rotatably connected to the top of the rotating barrel 11, a fixing bar 12 is fixedly connected to one side of the top of the bottom cover 10, and a second motor 13 is fixedly connected to one end of the fixing bar 12. A first gear 14 is sleeved on the output shaft of the second motor 13, and the first gear 14 and the second gear 15 are meshed together. A spiral piece 1101 is fixedly installed at the bottom of the second gear 15, and a plurality of feed ports 1102 are opened at the bottom of the rotating barrel 11. A plurality of grinders 16 are installed on the outer ring of the rotating barrel 11, and the inner ring of each grinder 16 faces the inside of the rotating barrel 11, and the inner ring of the grinder 16 is elastically connected to a grinding sheet 1601. When the aggregate starts to be processed, it will flow out to the top of the bottom cover 10 through the inlet hopper 1, and the bottom cover 10 is in an inclined state, so that the aggregate can be retained along one end of the bottom cover 10 to the other end to the feed port 1102 at the bottom of the transfer barrel 11. At this time, the second motor 13 can be turned on to rotate. When the second motor 13 rotates, the first gear 14 can be rotated. When the first gear 14 rotates, it drives the second gear 15 to rotate, so that when the second gear 15 rotates, the spiral piece 1101 rotates to transfer the aggregate to rise. In this process, the spiral piece 1101 makes the aggregate rise, and then the aggregate and the grinding piece 1601 come into contact, so that the edges and corners of the aggregate are polished and refined for the second time, thereby improving the fineness of the aggregate, and facilitating the input of the fixed plate 31 and then entering the movable plate 29 for processing; Furthermore, a first motor 6 is fixedly installed at one end of the feed hopper 1, and a bite roller 5 is sleeved on the output shaft of the first motor 6. The bite roller 5 and the feed hopper 1 are rotatably connected. First cylinders 7 are fixedly connected at both ends of the feed hopper 1, and a fixed stirring roller 3 is connected between the two first cylinders 7; the fixed stirring roller 3 and the bite roller 5 are both made of metal. After the building is crushed, it is directly put into the feed hopper 1, and then the telescopic rods of the two first cylinders 7 are driven to extend, so that the distance between the fixed stirring roller 3 and the bite roller 5 can be controlled, the bite roller 5 can be rotated, and the fixed stirring roller 3 is in a fixed posture. At the same time, it can also be detachable from the first cylinder 7. When the fixed stirring roller 3 is worn out, it can be disassembled and rotated and installed on the first cylinder 7 again. The bite roller 5 and the fixed stirring roller 3 can be selected as rollers with teeth, and metal steel bars and concrete can be crushed and refined at the same time. The gap between the bite roller 5 and the fixed stirring roller 3 is adjusted by two first cylinders 7 so that the aggregate size can be selected, allowing users to choose the material cost.

[0021] Further, a blower 2 is fixedly installed at the other end of the feed hopper 1. One end of the blower 2 is fixedly connected to a suction pipe 4. A connecting cover 8 is fixedly installed on one side inside the feed hopper 1. One end of the suction pipe 4 is fixedly connected to the connecting cover 8. A plurality of suction holes are formed on the other side of the bottom cover 10. The other end of the suction pipe 4 is fixedly connected to a diversion pipe 9. One end of the diversion pipe 9 is fixedly connected to a branch pipe 901. One end of the branch pipe 901 penetrates into the inside of one side of the bottom cover 10. One end of the branch pipe 901 is detachably connected to a sewage intercepting pipe 902. When the biting roller 5 and the fixed stirring roller 3 process construction waste, dust is inevitably generated. Therefore, during the processing, the blower 2 is turned on. After the blower 2 is turned on, the suction pipe 4 can suck the dust into one end of the blower 2. A dust reduction collection bag can be connected to one end of the blower 2. At the same time, the diversion pipe 9 is connected to the suction pipe 4. The branch pipe 901 located at one end of the diversion pipe 9 sucks away the dust and fine metal particles on the surface of the fixed plate 31. The connection between the diversion pipe 9 and the branch pipe 901 is a one-way output. Therefore, the sundries entering the inside of the branch pipe 901 are collected by the sewage intercepting pipe 902, improving the cleanliness of the surrounding environment of the entire machine, reducing pollution. Then, the second sealing block 27 is opened, and the sundries on the fixed plate 31 are removed manually.

[0022] It should be noted that in this article, 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 terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0023] 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 device for producing recycled concrete aggregate from construction solid waste, comprising a feed hopper (1), characterized in that: A bottom cover (10) is fixedly mounted on one side of the bottom of the feed hopper (1), a rotating barrel (11) is fixedly mounted on the top of the bottom cover (10), a processing box (17) is fixedly mounted on one side of the bottom cover (10), a third motor (23) is fixedly connected to one side of the processing box (17), a fixed rod (32) is slidably connected to the processing box (17), a connecting rod (33) is fixedly mounted on the top of the fixed rod (32), one end of the connecting rod (33) is fixedly connected to a rack (19), a main drive gear is sleeved on the output shaft of the third motor (23), the main drive gear and the rack (19) are meshed for transmission, and the A movable plate (29) is fixedly connected to the bottom of the fixed rod (32); a fixed plate (31) is fixedly installed on the top of the processing box (17); a plurality of material penetration holes are provided on the fixed plate (31); a plurality of classifiers (30) for absorbing and separating metal impurities are fixedly connected to the movable plate (29); a heater (24) is fixedly installed on the top of the processing box (17); a plurality of heating pipes (28) are fixedly connected to the bottom of the heater (24); the heating pipes (28) pass through the processing box (17); a liquid inlet pipe (25) is fixedly connected to one side of the processing box (17); the liquid inlet pipe (25) is connected to a water pump.

2. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: The other side of the processing box (17) is fixedly connected to a control box (18), a light sensor (20) is provided between the rack (19) and the control box (18), the light sensor (20) and the processing box (17) are fixedly connected together, a photosensitive sheet is fixedly connected to the bottom of the rack (19), and a drainage pipe (21) is fixedly connected to the bottom of the processing box (17).

3. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: A processing and screening area is provided between the fixed plate (31) and the movable plate (29); a humidity sensor (22) is fixedly connected to the side of the processing box (17) next to the processing and screening area; a first sealing block (26) is detachably connected to the side of the processing and screening area; a debris removal area is provided between the fixed plate (31) and the top of the processing box (17); a second sealing block (27) is detachably connected to the side of the debris removal area.

4. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: The classifier (30) comprises a plurality of bottom columns fixedly mounted on a movable plate (29), the top of the bottom column being fixedly connected to an electromagnet (34), each of the electromagnets (34) being electrically connected to a light sensor (20), a movable sheet (35) being slidably connected to the electromagnet (34), the bottoms of both ends of the movable sheet (35) being fixedly connected to extension rods (37), the bottom of each extension rod (37) being fixedly connected to a discharge rod (39), a fixed sheet (36) being fixedly mounted between two extension rods (37) on the same electromagnet (34), the fixed sheet (36) being slidably connected to the electromagnet (34), and a spring (38) being fixedly connected between the fixed sheet (36) and the movable plate (29).

5. The device for producing recycled concrete aggregate from construction solid waste according to claim 4, characterized in that: The diameters of both ends of the drainage rod (39) are larger than the diameter of the middle portion, so that when the drainage rod (39) descends, the middle portion thereof is received in the movable plate (29), thereby achieving a drainage function between the movable plate (29) and the fixed plate (31).

6. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: The top of the rotating barrel (11) is rotatably connected to a second gear (15), one side of the top of the bottom cover (10) is fixedly connected to a fixing bar (12), one end of the fixing bar (12) is fixedly connected to a second motor (13), a first gear (14) is sleeved on the output shaft of the second motor (13), the first gear (14) and the second gear (15) are meshed together, a spiral sheet (1101) is fixedly installed at the bottom of the second gear (15), a plurality of feed ports (1102) are opened at the bottom of the rotating barrel (11), a plurality of grinders (16) are installed on the outer ring of the rotating barrel (11), the inner ring of each grinder (16) faces the inside of the rotating barrel (11), and the inner ring of each grinder (16) is elastically connected to a grinding sheet (1601).

7. The device for producing recycled concrete aggregate from construction solid waste according to claim 6, characterized in that: A first motor (6) is fixedly mounted on one end of the feed hopper (1); a bite roller (5) is sleeved on an output shaft of the first motor (6); the bite roller (5) and the feed hopper (1) are rotatably connected; first cylinders (7) are fixedly connected to both ends of the feed hopper (1); and a fixed stirring roller (3) is connected between the two first cylinders (7).

8. The device for producing recycled concrete aggregate from construction solid waste according to claim 7, characterized in that: The fixed stirring roller (3) and the biting roller (5) are both made of metal.

9. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: A fan (2) is fixedly mounted on the other end of the feed hopper (1), one end of the fan (2) is fixedly connected to an air suction pipe (4), a connection cover (8) is fixedly mounted on one side of the feed hopper (1), one end of the air suction pipe (4) is fixedly connected to the connection cover (8), a plurality of air suction holes are provided on the other side of the bottom cover (10), the other end of the air suction pipe (4) is fixedly connected to a drainage pipe (9), one end of the drainage pipe (9) is fixedly connected to a branch pipe (901), one end of the branch pipe (901) passes through the inside of one side of the bottom cover (10), and one end of the branch pipe (901) is detachably connected to a sewage interception pipe (902).

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