Equipment for making recycled concrete aggregate from construction solid waste

Abstract

The present invention relates to the technical field of solid waste utilization and production equipment, and discloses a device for producing recycled concrete aggregate from construction solid waste, comprising a feed hopper, a bottom cover fixedly installed on one side of the bottom of the feed hopper, a rotating drum fixedly installed on the top of the bottom cover, a processing box fixedly installed on one side of the bottom cover, a third motor fixedly connected to one side of the processing box, a fixed rod slidably connected to the processing box, a connecting rod fixedly installed on the top of the fixed rod, a rack fixedly connected to one end of the connecting rod, a main drive gear sleeved on the output shaft of the third motor, the main drive gear and the rack engaged for transmission, the device for producing recycled concrete aggregate from construction solid waste drives the third motor to perform forward and reverse rotation, so that the aggregates can grind and break up each other by relying on their own edges and corners, and in the process of washing the aggregates, the aggregates rub and grind the aggregates themselves to refine the particle size, and the aggregates can be used directly after being ground.

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 aggregates from solid construction waste is an important link in resource recycling. Recycled concrete refers to the crushing, cleaning and grading of abandoned concrete blocks. It is an environmentally friendly and sustainable building material. 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, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a device for producing recycled concrete aggregates from construction solid waste, comprising a hopper, a bottom cover fixedly installed on one side of the bottom of the hopper, a rotating drum fixedly installed on the top of the bottom cover, a processing box fixedly installed on one side of the bottom cover, a third motor fixedly connected to one side of the processing box, a fixed rod slidably connected to the processing box, a connecting rod fixedly installed on the top of the fixed rod, one end of the connecting rod fixedly connected to a rack, a main drive gear sleeved on the output shaft of the third motor, the main drive gear and the rack engaged for transmission, a movable plate fixedly connected to the bottom of the fixed rod, a fixed plate 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 on the movable plate, a heater fixedly installed on the top of the processing box, a plurality of heating pipes fixedly connected to the bottom of the heater, the heating pipes pass through the processing box, a liquid inlet pipe 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 provided 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 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, an extension rod is 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 located 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 achieving a 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, one end of the fixing bar is fixedly connected to the second motor, 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 feed 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 feed 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:

[0014] 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 that assist in grinding between the fixed plate and the movable plate, and then the third motor is driven to reverse, so that the aggregates can rely on their own edges and corners to grind and break up each other. 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 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 block is manually removed from the processing box to collect the aggregates. Not only does the aggregate itself rub and grind to refine the particle size of the aggregate itself during the washing process, but the aggregate can also be used directly after grinding, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the feed hopper of the present invention;

[0017] Figure 3 This is a schematic structural diagram of another perspective of the present invention as a whole;

[0018] Figure 4 This is a schematic diagram of the structure of the rotating barrel of the present invention;

[0019] Figure 5 This is a schematic diagram of the internal structure of the processing box of the present invention;

[0020] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 7 This is a schematic diagram of the connection structure between the movable plate and the classifier of the present invention;

[0022] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0023] In the figure: 1-feed 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-sewage interception pipe; 10-bottom cover; 11-rotating barrel; 1101-spiral plate; 1102-feed port; 12-fixed bar; 13-second motor; 14-first gear; 15-second gear; 16-grinding device; 1601-grinding disc; 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 plate;36-fixed plate;37-extension rod;38-spring;39-drain rod. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-8The present invention provides a technical solution: an equipment for producing recycled concrete aggregate from construction solid waste, comprising a feed hopper 1, a bottom cover 10 is fixedly installed on one side of the bottom of the feed hopper 1, a rotating drum 11 is fixedly installed on the top of the bottom cover 10, a processing box 17 is fixedly installed 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 installed 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 engaged for transmission, 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, and 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 plate 31, a plurality of classifiers 30 for absorbing and separating metal debris 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, and the liquid inlet pipe 25 is connected to a water pump; a processing and screening area is set 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 set between the fixed plate 31 and the top of the processing box 17, and a second sealing block 27 is detachably connected to the side of the debris removal 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 to be accumulated. 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, and 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 press the fixed plate 31 and the movable plate 29 Water or other liquids that assist in grinding are added, and then the third motor 23 is driven to rotate in the reverse direction, so that the aggregates can grind each other and break up 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. 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 particle size of the aggregate itself during the washing process, but the aggregate can also be used directly after grinding, which is simple and convenient.

[0026] When the aggregate passes through the through-holes, the metal impurities contained in the aggregate can be directly absorbed by the classifier 30 .

[0027] Specifically, the other side of the processing box 17 is fixedly connected to the control box 18, and 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, and the classifier 30 is powered off, and the metal impurities are discharged to the fixed plate 31 for collection.

[0028] 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 light sensor 20, and a movable piece 35 is slidably connected to the electromagnet 34, and an extension rod 37 is fixedly connected to the bottom of both ends of the movable piece 35, and a drain rod 39 is fixedly connected to the bottom of each extension rod 37, and a fixed piece 36 is fixedly mounted between the two extension rods 37 on the same electromagnet 34, and the fixed piece 36 is slidably connected to the electromagnet 34, and a spring 38 is fixedly connected between the fixed piece 36 and the movable plate 29; the diameters of the two ends of the drain rod 39 are larger than the diameter of the middle part, so that when it descends, its middle part is included in the movable plate 29, realizing the drainage function between the movable plate 29 and the fixed plate 31, and after the material is dropped through the 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 allowed to pass through the material-piercing hole. During the process of the electromagnet 34 passing through the material-piercing hole, the light sensor 20 contacts the photosensitive sheet. After being sensed, the light sensor 20 sends information to the background control box 18 to cut off the power of the electromagnet 34 and discharge the metal debris into the space 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 under pressure from the bottom of the fixed plate 31, it tends to fall, causing the extension rod 37 to fall, and the spring 38 to be in a compressed state. 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 draining the water between the movable plate 29 and the fixed plate 31, making it convenient for the heater 24 to heat the inside of the processing box 17 and improve the processing efficiency.

[0029] 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 on the bottom of the second gear 15, and a plurality of feed ports 1102 are provided 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 feed hopper 1, and the bottom cover 10 is in an inclined state, so that the aggregate can flow along one end of the bottom cover 10 to the other end and arrive at the feeding port 1102 at the bottom of the rotating 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 rotate the aggregate. 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;

[0030] 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 rotate, and the fixed stirring roller 3 is in a fixed posture. 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 then installed on the first cylinder 7 again. The bite roller 5 and the fixed stirring roller 3 can be optionally equipped with toothed rollers, which can crush and refine metal steel bars and concrete 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.

[0031] Furthermore, a fan 2 is fixedly installed at the other end of the feed hopper 1, and one end of the fan 2 is fixedly connected to a suction pipe 4. A connecting cover 8 is fixedly installed on one side of the feed hopper 1, and one end of the suction pipe 4 is fixedly connected to the connecting cover 8. A plurality of suction holes are provided on the other side of the bottom cover 10, and the other end of the suction pipe 4 is fixedly connected to a drainage pipe 9, and one end of the drainage pipe 9 is fixedly connected to a branch pipe 901, and 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. When the bite roller 5 and the fixed stirring roller 3 are processing building waste, dust will inevitably be generated, so the fan is turned on during the processing. 2. After the fan 2 is turned on, the suction pipe 4 can suck the dust into one end of the fan 2. A dust collection bag can be connected to one end of the fan 2. At the same time, the drainage pipe 9 is connected to the suction pipe 4. The branch pipe 901 at one end of the drainage pipe 9 sucks away the dust and fine metal particles on the surface of the fixed plate 31. The connection between the drainage pipe 9 and the branch pipe 901 is a one-way output. Therefore, the debris entering the branch pipe 901 is collected in the sewage interception pipe 902, which improves the cleanliness of the surrounding environment of the entire machine and reduces pollution. After that, the second sealing block 27 is opened and the debris on the fixed plate 31 can be manually removed.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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, The bottom of the fixed rod (32) is fixedly connected to a movable plate (29), the top of the processing box (17) is fixedly installed with a fixed plate (31), the fixed plate (31) is provided with a plurality of through-holes, the movable plate (29) is fixedly connected to a plurality of classifiers (30) for absorbing and separating metal debris, the top of the processing box (17) is fixedly installed with a heater (24), 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), and one side of the processing box (17) is fixedly connected to a liquid inlet pipe (25), and the liquid inlet pipe (25) is connected to a water pump; 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, 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); The classifier (30) includes a plurality of bottom columns fixedly mounted on a movable plate (29), an electromagnet (34) fixedly connected to the top of the bottom column, each electromagnet (34) being electrically connected to a light sensor (20), a movable sheet (35) being slidably connected to the electromagnet (34), an extension rod (37) being fixedly connected to the bottom of both ends of the movable sheet (35), a discharge rod (39) being fixedly connected to the bottom of each extension rod (37), a fixed sheet (36) being fixedly mounted between two extension rods (37) located 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); A fan (2) is fixedly installed at the other end of the feed hopper (1), and one end of the fan (2) is fixedly connected to a suction pipe (4). A connecting cover (8) is fixedly installed on one side of the feed hopper (1), and one end of the suction pipe (4) is fixedly connected to the connecting cover (8). A plurality of suction holes are opened on the other side of the bottom cover (10). The other end of the suction pipe (4) is fixedly connected to a drainage pipe (9), and 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). The branch pipe (901) located at one end of the drainage pipe (9) sucks away dust and fine metal particles on the surface of the fixed plate (31).

2. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: A processing and screening area is set 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 set 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.

3. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, characterized in that: The diameters of both ends of the drain rod (39) are larger than the diameter of the middle portion, so that when it descends, the middle portion is incorporated into the movable plate (29), thereby achieving a drainage function between the movable plate (29) and the fixed plate (31).

4. 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 piece (1101) is fixedly installed on 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 piece (1601).

5. The device for producing recycled concrete aggregate from construction solid waste according to claim 1, 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).

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

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