A concrete production waste crushing and recycling system

Abstract

The present invention belongs to the technical field of concrete recycling, and specifically relates to a concrete production waste crushing and recycling system. The upper surface of a base is fixedly provided with a box body. The upper surface of the box body is fixedly provided with a crusher. The upper surface of the crusher is provided with a feed inlet. The upper surface of the box body is provided with an opening corresponding to the discharge outlet at the bottom of the crusher. A sorting mechanism is arranged inside the box body. The present invention ensures that the waste is fully crushed, can screen out the residual metal materials after crushing, realizes the refined separation of metal materials and non-metal materials, improves the recycling rate of resources, and can flexibly adjust the height and position of the filter screen plate to meet the screening requirements of aggregates with different particle sizes, improves the adaptability and flexibility of the system, realizes more refined classification, reduces the environmental pollution caused by construction waste, and effectively realizes the systematic recycling and reuse of waste precast concrete slabs.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete recycling, and particularly to a crushing and recycling system for concrete production waste. Background Art

[0002] Concrete refers to artificial stone made by using cement as the main binder, together with water, sand, gravel, and if necessary, chemical admixtures and mineral admixtures, and proportioned appropriately, uniformly stirred, densely formed, and cured and hardened. During the processing of artificial stone or precast slabs made of concrete, some unqualified waste materials are easily generated, and the concrete waste can be recycled through crushing treatment;

[0003] In the prior art, when treating concrete waste, it is difficult to ensure sufficient crushing of the concrete waste, reasonable classification of the crushed aggregates, and more refined classification between metals and non-metals, which is not convenient for subsequent reuse or further treatment;

[0004] In view of the above technical defects, a solution is proposed herein. Summary of the Invention

[0005] The purpose of the present invention is to provide a crushing and recycling system for concrete production waste. The reciprocating scraping of the crushed materials is achieved by a turntable driving a plurality of evenly spaced scraping rods on the lower surface of the corresponding connecting frame, so that the crushed materials are evenly distributed. At the same time, the movement of the first toothed plate can automatically discharge the metal materials on the first conveyor belt, realizing the effective separation of metals and non-metals; at the same time, by adjusting the height and position of the filter screen plate, the screening requirements for aggregates of different particle sizes can be met, so as to solve the technical defects proposed in the background art.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A crushing and recycling system for concrete production waste, including a base, on the upper surface of which a box body is fixedly installed, on the upper surface of the box body a crusher is fixedly installed, on the upper surface of the crusher a feed inlet is opened, and on the upper surface of the box body an opening corresponding to the bottom discharge port of the crusher is opened;

[0007] A sorting mechanism is arranged inside the box body. The sorting mechanism includes a first conveyor belt, a second conveyor belt, and a first screening cylinder for sorting. A magnetic plate is arranged inside the first conveyor belt. The first conveyor belt extends out of the box body through the box body. A filter screen plate is vertically slidably connected inside the first screening cylinder. The filter screen plate is penetrated and rotationally connected with a spline shaft in a limited manner. A first scraping plate that abuts against the filter screen plate is fixedly connected to the outer wall of the spline shaft. A connecting cylinder, a first receiving cylinder, and a second receiving cylinder are sequentially arranged in the box body from top to bottom. An opening groove is opened on the outer wall of the first screening cylinder near the lower surface.

[0008] Preferably, the spline shaft penetrates and is rotationally connected to a connecting plate in a limited manner. One end of the connecting plate close to the second conveyor belt is fixedly connected to a fork bar. A guide plate is fixedly connected to the inner wall of the box body between the second conveyor belt and the first screening cylinder. The first conveyor belt is arranged directly above the end of the second conveyor belt. An outlet one penetrating the box body is formed on one side of the first receiving cylinder. The connecting cylinder penetrates the first receiving cylinder and is rotationally connected to the first receiving cylinder. Scraping plates two are annularly and arrayedly distributed on the outer wall of the connecting cylinder. The bottom end of the connecting cylinder abuts against the surface of the second receiving cylinder. A cross-shaped scraping plate is fixedly connected to the inner wall of the connecting cylinder. The spline shaft penetrates the cross-shaped scraping plate on the connecting cylinder and is vertically slidably connected to the cross-shaped scraping plate. An outlet two penetrating the box body is formed on one side of the second receiving cylinder.

[0009] Preferably, an electric push rod is fixedly installed on the upper surface of the box body. The telescopic end of the electric push rod penetrates the box body and is fixedly connected to the connecting plate. Two symmetrically arranged limiting columns are fixedly connected to the upper surface of the connecting plate. The two limiting columns penetrate the box body and are vertically slidably connected to the box body.

[0010] Preferably, a driving roller for sleeving the second conveyor belt is fixedly connected to the inner wall of the box body in a fixed-axis rotation manner. The second conveyor belt is located directly below the crusher. A motor one for driving the driving roller to rotate is fixedly installed on the outer wall of the box body.

[0011] Preferably, a first mounting frame is fixedly connected to the inner wall of the box body on the side far from the first screening cylinder. The first mounting frame is located directly above the second conveyor belt. A first gear is fixedly connected to the first mounting frame in a fixed-axis rotation manner. The first gear is meshed with a first toothed plate limited in the horizontal direction on both sides. The lower surface of the first toothed plate is fixedly connected to a connecting frame. A plurality of spaced-apart material pushing rods are fixedly connected to the lower surface of the connecting frame. A material pushing plate extending towards the lower surface of the first conveyor belt is fixedly connected to one side of the connecting frame.

[0012] Preferably, a limiting frame is fixedly connected to the inner wall of the box body. The limiting frame is penetrated and fixedly connected to a socket sleeve in a fixed-axis rotation manner. The spline shaft penetrates the lower surface of the socket sleeve and is vertically and slidably connected to the socket sleeve in a limited manner. A turntable is fixedly connected to the top end of the socket sleeve. An eccentric column is fixedly connected to the upper surface of the turntable. The eccentric column penetrates and is slidably connected to a connecting frame. The connecting frame is fixedly connected to a second toothed plate extending towards the first gear and meshing with the first gear.

[0013] Preferably, a second mounting frame for installing the first conveyor belt is fixedly connected to the inner wall of the box body. The second toothed plate penetrates the second mounting frame and is horizontally and slidably connected to the second mounting frame. Two limiting rods penetrating the first toothed plate are fixedly connected to the inner wall of the box body. The first toothed plate is horizontally slidably connected to the two limiting rods.

[0014] Preferably, one side of the outer wall of the box body is fixedly connected with a feeding hopper. An opening through which the first conveyor belt passes is provided on one side of the box body near the top of the feeding hopper. Support frames are fixedly connected to both sides of the feeding hopper. A driving roller around which the first conveyor belt is sleeved is rotatably connected between the two support frames on the feeding hopper. The magnetic plate is fixedly connected to the second mounting frame and extends away from the box body along the direction of the first conveyor belt.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The present invention efficiently and fully crushes waste precast concrete slabs. Through the coordinated setting of the first conveyor belt, the second conveyor belt, the first screening cylinder and the sorting mechanism, the crushed materials can be effectively sorted. The first conveyor belt cooperates with the magnetic plate to screen out the residual metal materials after crushing, realizing the effective separation of metal and non-metal. The height and position of the filter mesh plate can be flexibly adjusted to meet the screening requirements of aggregates with different particle sizes. The spline shaft moves vertically and cooperates with the fork bar to further assist the first conveyor belt in screening and adsorbing metals in the aggregates, improving the adaptability and flexibility of the system and achieving more refined classification.

[0017] (2) The present invention also drives the screened aggregates to be discharged separately from the first discharge port and the second discharge port by rotating the spline shaft. The reciprocating raking of the broken materials is carried out by the multiple spaced distribution of the lower surface of the corresponding connecting frame driven by the turntable, so that the broken materials are evenly distributed. At the same time, the movement of the first toothed plate can automatically discharge the metal materials on the first conveyor belt, realizing the refined separation of metal materials and non-metal materials, facilitating subsequent reuse or treatment, improving the resource recovery utilization rate, reducing the environmental pollution caused by construction waste, and effectively realizing the systematic recycling and reuse of waste precast concrete slabs. Description of the Drawings

[0018] The following further describes the present invention with reference to the drawings;

[0019] Figure 1 is the three-dimensional view of the overall structure of the present invention Figure 1 ;

[0020] Figure 2 is the three-dimensional view of the overall structure of the present invention Figure 2 ;

[0021] Figure 3 is the three-dimensional view of the overall structure of the present invention Figure 3 ;

[0022] Figure 4 is the schematic diagram of the internal structure of the box body of the present invention;

[0023] Figure 5 is the schematic diagram of the first gear structure of the present invention;

[0024] Figure 6It is a schematic structural diagram of the spline shaft of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the first screening cylinder of the present invention.

[0026] Legend: 1. Base; 2. Box body; 3. Crusher; 4. Feed inlet; 5. First discharge port; 6. Second discharge port; 7. Material receiving hopper; 8. First conveyor belt; 9. Second conveyor belt; 10. First screening cylinder; 11. Guide plate; 12. Spline shaft; 13. Connecting cylinder; 14. First material receiving cylinder; 15. First gear; 16. First mounting frame; 17. Second toothed plate; 18. Turntable; 19. Connecting frame; 20. Eccentric column; 21. First scraping plate; 22. Second scraping plate; 23. Second mounting frame; 24. Connecting plate; 25. Insertion sleeve; 26. Limit column; 27. Electric push rod; 28. Fork bar; 29. Limit frame; 30. Open slot; 31. First toothed plate; 32. Filter screen plate; 33. Second material receiving cylinder; 34. Connecting frame; 35. Magnetic plate. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1: This embodiment is used to solve the problems that it is difficult to ensure the full pulverization treatment of concrete waste, it is impossible to reasonably classify the crushed aggregates, and the fine classification between metals and non-metals is not convenient for subsequent reuse or further treatment.

[0029] Please refer to Figures 1-7 As shown in the figure, this embodiment is a concrete production waste crushing and recycling system, including a base 1. A box body 2 is fixedly installed on the upper surface of the base 1. A crusher 3 is fixedly installed on the upper surface of the box body 2. A feed inlet 4 is opened on the upper surface of the crusher 3. The waste cement board is placed into the corresponding feed inlet 4. When the belt pulley on the crusher 3 rotates, the crusher 3 can perform a crushing operation on the waste precast concrete board. The crusher 3 is a jaw crusher. The moving jaw in the crusher 3 reciprocally squeezes the waste precast concrete board to perform a full crushing operation, separating the steel bars and aggregates in the waste cement board. An opening corresponding to the bottom discharge port of the crusher 3 is opened on the upper surface of the box body 2, and it falls into the box body 2 through the opening on the box body 2. A sorting mechanism is arranged in the box body 2;

[0030] The sorting mechanism includes conveyor belt 1 for sorting, conveyor belt 2 and screening cylinder 1. Conveyor belt 1, conveyor belt 2 and screening cylinder 1 perform sorting operations on the crushed precast concrete slabs. Conveyor belt 2 conveys the crushed precast concrete slabs. A magnetic plate 35 is arranged inside conveyor belt 1. Conveyor belt 1 cooperates with magnetic plate 35 to screen and convey the remaining metal materials after crushing. Conveyor belt 1 penetrates through the box body 2 and extends outward. Conveyor belt 1 screens and conveys the metal materials outside the box body 2.

[0031] Screening cylinder 1 is fixedly connected to the inner wall of box body 2 through a mounting frame. When the crushed precast concrete slabs are fed through the guide plate 11 and fall into screening cylinder 1, a filter screen plate 32 is vertically slidably connected inside screening cylinder 1. A limiting rib penetrating through filter screen plate 32 is arranged on the inner wall of screening cylinder 1, so that filter screen plate 32 is limited to slide in the vertical direction. Filter screen plate 32 is penetrated and rotatably connected with a spline shaft 12 in a limited way. A scraping plate 1 is fixedly connected to the outer wall of spline shaft 12 and abuts against filter screen plate 32. When spline shaft 12 moves and rotates in the vertical direction, it can pull filter screen plate 32 to move vertically inside screening cylinder 1.

[0032] When scraping plate 1 rotates with spline shaft 12, scraping plate 1 pushes the crushed precast concrete slab aggregates to move on filter screen plate 32. The filter holes on filter screen plate 32 perform preliminary screening and filtering on the crushed precast concrete slab aggregates.

[0033] A connecting cylinder 13, a receiving cylinder 1 and a receiving cylinder 33 are sequentially arranged in box body 2 from top to bottom. An opening groove 30 is formed on the outer wall of screening cylinder 1 near the lower surface. When spline shaft 12 pushes filter screen plate 32 to move vertically downward so that the vertical height of filter screen plate 32 is lower than opening groove 30, the vertical downward movement of filter screen plate 32 can adjust the size of the feeding aperture at opening groove 30. As spline shaft 12 rotates, scraping plate 1 pushes the crushed precast concrete slab aggregates to move, so that the unfiltered large-grain aggregates fall into receiving cylinder 1 through opening groove 30, realizing the separation of aggregates with different particle sizes and facilitating the further processing of the subsequent precast concrete slab aggregates.

[0034] Spline shaft 12 penetrates through and is rotatably connected with a connecting plate 24 in a limited way. A fork bar 28 is fixedly connected to one end of connecting plate 24 close to conveyor belt 2. When spline shaft 12 moves vertically, it can lift the aggregates and metal on conveyor belt 1, making them fit to the lower surface of conveyor belt 1 and assisting conveyor belt 1 to screen the metal. A guide plate 11 is fixedly connected to the inner wall of box body 2 between conveyor belt 2 and screening cylinder 1. Guide plate 11 conveys the crushed aggregates into screening cylinder 1. Conveyor belt 1 is arranged directly above the end of conveyor belt 2.

[0035] On one side of the first material receiving cylinder 14, there is a first discharge port 5 penetrating through the box body 2. The radius of the first material receiving cylinder 14 is larger than that of the connecting cylinder 13. The connecting cylinder 13 penetrates through the first material receiving cylinder 14 and is rotatably connected to the first material receiving cylinder 14. The outer wall of the connecting cylinder 13 is annularly and arrayedly distributed with second scraping plates 22. The second scraping plates 22 are in contact with the inner wall of the first material receiving cylinder 14. The bottom end of the connecting cylinder 13 is in contact with the surface of the second material receiving cylinder 33. When the connecting cylinder 13 rotates in the first material receiving cylinder 14, the second scraping plates 22 on the outer wall of the connecting cylinder 13 push the aggregate falling into the first material receiving cylinder 14 from the opening groove 30 to move. The bottom of the first material receiving cylinder 14 is inclined away from the connecting cylinder 13, which can realize the fitting of the aggregate with the inner wall of the first material receiving cylinder 14;

[0036] A cross-shaped scraper is fixedly connected to the inner wall of the connecting cylinder 13. The spline shaft 12 penetrates through the cross-shaped scraper on the connecting cylinder 13 and is vertically slidably connected to the cross-shaped scraper. On one side of the second material receiving cylinder 33, there is a second discharge port 6 penetrating through the box body 2. When the spline shaft 12 rotates, the connecting cylinder 13 can rotate along with the spline shaft 12, so as to push the aggregate in the first material receiving cylinder 14 to be discharged from the first discharge port 5, and can automatically discharge the aggregate that has not passed through the filter screen plate 32. At the same time, the cross-shaped scraper in the connecting cylinder 13 rotates in the second material receiving cylinder 33, which can realize pushing the aggregate falling from the filter screen plate 32 into the second material receiving cylinder 33 to be discharged through the second discharge port 6, so as to realize the classified recycling and automatic discharging of the aggregate after the waste precast concrete slab is crushed. A second motor is fixedly installed in the base 1. The output shaft of the second motor penetrates through the spline shaft 12 and is inserted into the spline shaft 12. Starting the second motor can make the corresponding spline shaft 12 rotate.

[0037] An electric push rod 27 is fixedly installed on the upper surface of the box body 2. The telescopic end of the electric push rod 27 penetrates through the box body 2 and is fixedly connected to the connecting plate 24. Two symmetrically arranged limiting columns 26 are fixedly connected to the upper surface of the connecting plate 24. The two limiting columns 26 penetrate through the box body 2 and are vertically slidably connected to the box body 2. Starting the electric push rod 27 on the box body 2, the telescopic end of the second toothed plate 17 pushes the corresponding connecting plate 24, and the connecting plate 24 moves in the vertical direction, which can push the connecting plate 24 and the spline shaft 12 to move in the vertical direction;

[0038] When controlling the filter screen plate 32 to move vertically upward, the fork bars 28 at the other end of the connecting plate 24 lift the aggregate on the second conveyor belt 9. There are multiple fork bars 28, and one ends of the multiple fork bars 28 close to the connecting plate 24 are arranged at intervals and unfolded, which is convenient for assisting in adsorbing the metal in the aggregate on the lower surface of the first conveyor belt 8. When the spline shaft 12 moves vertically downward, it can push the filter screen plate 32 to move vertically downward, so as to discharge the aggregate in the first screening cylinder 10 through the opening groove 30.

[0039] A driving roller around which a second conveyor belt 9 is sleeved is rotatably connected to the inner wall of the box body 2. The second conveyor belt 9 is located directly below the crusher 3. A first motor for driving the driving roller to rotate is fixedly installed on the outer wall of the box body 2. Starting the first motor can move the driving roller corresponding to the second conveyor belt 9, and can convey the aggregate falling from the bottom of the feed inlet 4. The second conveyor belt 9 moves the aggregate towards the bottom of the first conveyor belt 8, and the first conveyor belt 8 screens the metal materials. The second conveyor belt 9 conveys the aggregate and slides it into the first screening cylinder 10 through the guide plate 11.

[0040] Embodiment 2: This embodiment is used to fully separate metal materials and non-metal materials to ensure the full recycling and utilization of aggregates.

[0041] Please refer to Figure 1 - Figure 7 As shown in the figure, on one side inner wall of the box body 2 away from the first screening cylinder 10, a first mounting frame 16 is fixedly connected. The first mounting frame 16 is located directly above the second conveyor belt 9. A first gear 15 is rotatably connected to the first mounting frame 16. On both sides of the first gear 15, a first toothed plate 31 limited in the horizontal direction is engaged. The lower surface of the first toothed plate 31 is fixedly connected to a connecting frame 34. A plurality of evenly spaced stirring rods are fixedly connected to the lower surface of the connecting frame 34.

[0042] When the first gear 15 reciprocally rotates on the first mounting frame 16, the two engaged first toothed plates 31 can reciprocally move. The stirring rods at the bottom of the connecting frame 34 reciprocally move along with the connecting frame 34, and can push the crushed materials piled up on the second conveyor belt 9 to be spread out, facilitating the subsequent materials to be adsorbed and screened by the first conveyor belt 8. A pushing plate extending towards the lower surface of the first conveyor belt 8 is fixedly connected to one side of the connecting frame 34. At the same time, as the first toothed plate 31 near the first conveyor belt 8 reciprocally moves, it can push the metal materials adsorbed on the lower surface of the first conveyor belt 8 out of the box body 2.

[0043] A limiting frame 29 is fixedly connected to the inner wall of the box body 2. The limiting frame 29 is penetrated and rotatably connected with a socket 25. A spline shaft 12 penetrates the lower surface of the socket 25 and is vertically and slidably connected with the socket 25 in a limited way. When the spline shaft 12 moves in the vertical direction, it can drive the socket 25 to rotate while moving in the vertical direction.

[0044] A turntable 18 is fixedly connected to the top of the plug-in sleeve 25. The turntable 18 fixedly connected to the plug-in sleeve 25 rotates with the spline shaft 12. An eccentric column 20 is fixedly connected to the upper surface of the turntable 18. The eccentric column 20 penetrates and is slidably connected to a connecting frame 19. The connecting frame 19 is fixedly connected to a tooth plate 217 extending toward the gear 15 and meshing with the gear 15. When the turntable 18 rotates, under the action of the eccentric column 20, the eccentric column 20 slides in the connecting frame 19, pushing the eccentric column 20 so that the eccentric column 20 pushes the tooth plate 217 fixedly connected thereto to move back and forth. The reciprocating movement of the tooth plate 217 pushes the gear 15 to rotate back and forth, thereby realizing the reciprocating and staggered movement of the two tooth plates 131 mentioned above, and the crushed stone material on the conveyor belt 8 is moved to be evenly distributed.

[0045] The inner wall of the box body 2 is fixedly connected with a mounting frame 23 for mounting the conveyor belt 8, and the mounting frame 23 is rotatably connected with a transmission roller for the conveyor belt 8 to be mounted. The mounting frame 23 is fixedly installed with a motor 3 for driving the conveyor belt 8 to move. Starting the mounting frame 23 can rotate the transmission roller on the mounting frame 23, thereby transporting the metal material adsorbed on the lower surface of the conveyor belt 8. The tooth plate 217 penetrates the mounting frame 21 and is horizontally limited and slidably connected with the mounting frame 21. The mounting frame 21 limits the tooth plate 17 in the horizontal direction. The inner wall of the box body 2 is fixedly connected with two limit rods penetrating the tooth plate 31. The tooth plate 31 is horizontally slidably connected with the two limit rods. The limit rod limits the tooth plate 31, so that the two tooth plates 31 are stably sliding on the limit rod.

[0046] A receiving hopper 7 is fixedly connected to one side of the outer wall of the box body 2, and an opening for a conveyor belt 8 to pass through is opened on one side of the box body 2 near the top of the receiving hopper 7, so that the conveyor belt 8 can transport the adsorbed metal material and collect and process it in a centralized manner through the receiving hopper 7. Support frames are fixedly connected to both sides of the receiving hopper 7, and the support frames support and install the transmission roller at the other end of the conveyor belt 8. A transmission roller for the conveyor belt 8 to be mounted is rotatably connected between the two support frames on the receiving hopper 7. The magnetic plate 35 is fixedly connected to the mounting frame 23 and extends along the direction of the conveyor belt 8 away from the box body 2, so that the conveyor belt 8 can transport the metal material on its lower surface.

[0047] Combining the first and second embodiments, it can be known that the jaw crusher 3 of the present invention can efficiently and fully crush the waste precast concrete slabs, and effectively sort the crushed materials. The conveyor belt 8 cooperates with the magnetic plate 35 to screen out the metal materials remaining after crushing, and realize the effective separation of metal and non-metal. The height and position of the filter plate 32 can be flexibly adjusted to meet the needs of aggregate screening of different particle sizes. The spline shaft 12 moves vertically to cooperate with the fork bar 28, further assisting the conveyor belt 8 to screen and adsorb metal in the aggregate, thereby improving the adaptability and flexibility of the system and realizing more refined classification.

[0048] The automatic discharging mechanism of the connecting cylinder 13, the first material receiving cylinder 14 and the second material receiving cylinder 33 can drive the sorted aggregates to be discharged separately from the first discharge port 5 and the second discharge port 6 by the rotation of the spline shaft 12. The turntable 18 drives the multiple evenly-spaced material-pushing rods on the lower surface of the corresponding connecting frame 34 to scrape the crushed materials reciprocally, making the crushed materials evenly distributed. At the same time, the movement of the first toothed plate 31 can automatically discharge the metal materials on the first conveyor belt 8, realizing the refined separation of metal materials and non-metal materials, facilitating subsequent reuse or treatment, improving the recycling rate of resources, reducing the environmental pollution caused by construction waste, and effectively realizing the systematic recycling and reuse of waste precast concrete slabs.

[0049] As Figures 1-7 shown, the working process and principle of the present invention are as follows:

[0050] Step 1: Start the crusher 3, put the waste precast concrete slab into the feeding port 4 on the crusher 3. The crusher 3 crushes the waste precast concrete slab, and the crushed materials fall onto the second conveyor belt 9 in the box body 2. Start the second motor that drives the spline shaft 12. The second motor drives the spline shaft 12 to rotate, and the socket 25 vertically limited thereto rotates, enabling the eccentric column 20 on the turntable 18 to push the connecting frame 19, so that the second toothed plate 17 fixedly connected to the connecting frame 19 pushes the first gear 15 to rotate reciprocally. At this time, the two first toothed plates 31 move alternately. The first toothed plate 31 pushes the connecting frame 34 fixedly connected thereto, and the material-pushing rod at the bottom end of the connecting frame 34 stirs the crushed materials on the second conveyor belt 9, making them evenly cover the second conveyor belt 9. The second conveyor belt 9 continues to convey the crushed materials, facilitating the subsequent screening and removal of the metal materials on the second conveyor belt 9 by the first conveyor belt 8;

[0051] Step 2: The conveyor belt 2 continues to convey the screened crushed materials. The crushed materials on the conveyor belt 2 are conveyed into the first screening cylinder 10 through the material guide plate 11. Start the electric push rod 27 on the box body 2. The electric push rod 27 pushes the connecting plate 24 to move in the vertical direction. While the spline shaft 12 moves and rotates in the vertical direction, it can pull the filter screen plate 32 to move in the vertical direction in the first screening cylinder 10. When the scraping plate 1 rotates with the spline shaft 12, the scraping plate 1 pushes the crushed precast concrete slab aggregate to move on the filter screen plate 32. The filter holes on the filter screen plate 32 conduct preliminary screening and filtration on the crushed precast concrete slab aggregate. When the spline shaft 12 pushes the filter screen plate 32 to move vertically downward so that the vertical height of the filter screen plate 32 is lower than the opening groove 30, as the spline shaft 12 rotates, the scraping plate 1 pushes the crushed precast concrete slab aggregate to move, enabling the unfiltered large-particle aggregates to fall into the first receiving cylinder 14 through the opening groove 30, realizing the separation of aggregates of different particle sizes, facilitating the further processing of the subsequent precast concrete slab aggregates, and simultaneously enabling the separation of metal materials and non-metal materials.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A concrete production waste crushing and recycling system, including a base (1), on the upper surface of the base (1), a box body (2) is fixedly installed, on the upper surface of the box body (2), a crusher (3) is fixedly installed, on the upper surface of the crusher (3), a feed inlet (4) is opened, and on the upper surface of the box body (2), an opening corresponding to the discharge port at the bottom of the crusher (3) is opened. It is characterized in that: A sorting mechanism is arranged in the box body (2). The sorting mechanism includes a first conveyor belt (8) for sorting, a second conveyor belt (9) and a first screening cylinder (10). A magnetic plate (35) is arranged inside the first conveyor belt (8). The first conveyor belt (8) extends out of the box body (2) through the box body (2). A filter screen plate (32) is vertically slidably connected inside the first screening cylinder (10). The filter screen plate (32) is penetrated and rotatably connected with a spline shaft (12) in a limited way. On the outer wall of the spline shaft (12), a first scraping plate (21) abutted against the filter screen plate (32) is fixedly connected. Inside the box body (2), a connecting cylinder (13), a first material receiving cylinder (14) and a second material receiving cylinder (33) are arranged in sequence from top to bottom. An opening groove (30) is opened on the outer wall of the first screening cylinder (10) near the lower surface; The spline shaft (12) penetrates and is rotatably connected with a connecting plate (24) in a limited way. At one end of the connecting plate (24) close to the second conveyor belt (9), a fork bar (28) is fixedly connected. A guide plate (11) is fixedly connected to the inner wall of the box body (2) between the second conveyor belt (9) and the first screening cylinder (10). The first conveyor belt (8) is arranged directly above the end of the second conveyor belt (9). On one side of the first material receiving cylinder (14), a first discharge port (5) penetrating the box body (2) is opened. The connecting cylinder (13) penetrates the first material receiving cylinder (14) and is rotatably connected with the first material receiving cylinder (14). On the outer wall of the connecting cylinder (13), second scraping plates (22) are annularly distributed. The bottom end of the connecting cylinder (13) abuts against the surface of the second material receiving cylinder (33). Inside the connecting cylinder (13), a cross scraping plate is fixedly connected. The spline shaft (12) penetrates the cross scraping plate on the connecting cylinder (13) and is vertically slidably connected with the cross scraping plate. On one side of the second material receiving cylinder (33), a second discharge port (6) penetrating the box body (2) is opened; An electric push rod (27) is fixedly installed on the upper surface of the box body (2). The telescopic end of the electric push rod (27) penetrates the box body (2) and is fixedly connected with the connecting plate (24). On the upper surface of the connecting plate (24), two symmetrically arranged limiting columns (26) are fixedly connected. The two limiting columns (26) penetrate the box body (2) and are vertically slidably connected with the box body (2); A driving roller for the second conveyor belt (9) to be sleeved is fixedly rotatably connected to the inner wall of the box body (2). The second conveyor belt (9) is located directly below the crusher (3). A motor for driving the driving roller to rotate is fixedly installed on the outer wall of the box body (2); On the inner wall of the box body (2) on the side far from the first screening cylinder (10), a first mounting frame (16) is fixedly connected. The first mounting frame (16) is located directly above the second conveyor belt (9). A first gear (15) is rotatably connected to the first mounting frame (16) by a fixed shaft. On both sides of the first gear (15), a first toothed plate (31) with horizontal limitation is engaged. The lower surface of the first toothed plate (31) is fixedly connected with a connecting frame (34). The lower surface of the connecting frame (34) is fixedly connected with a plurality of evenly spaced material pushing rods. One side of the connecting frame (34) is fixedly connected with a material pushing plate extending towards the lower surface of the first conveyor belt (8).

2. The concrete production waste crushing and recycling system according to claim 1, characterized in that, On the inner wall of the box body (2), a limiting frame (29) is fixedly connected. The limiting frame (29) is penetrated and rotatably connected with a plugging sleeve (25) by a fixed shaft. The spline shaft (12) penetrates the lower surface of the plugging sleeve (25) and is vertically and slidably connected with the plugging sleeve (25) with limitation. The top end of the plugging sleeve (25) is fixedly connected with a turntable (18). On the upper surface of the turntable (18), an eccentric column (20) is fixedly connected. The eccentric column (20) penetrates and is slidably connected with a connecting frame (19). The connecting frame (19) is fixedly connected with a second toothed plate (17) extending towards the first gear (15) and engaged with the first gear (15).

3. A concrete production waste crushing and recycling system according to claim 2, wherein, On the inner wall of the box body (2), a second mounting frame (23) for installing the first conveyor belt (8) is fixedly connected. The second toothed plate (17) penetrates the second mounting frame (23) and is horizontally and slidably connected with the second mounting frame (23). On the inner wall of the box body (2), two limiting rods penetrating the first toothed plate (31) are fixedly connected. The first toothed plate (31) is horizontally slidably connected with the two limiting rods.

4. A concrete production waste crushing and recycling system according to claim 3, characterized in that, On one side of the outer wall of the box body (2), a receiving hopper (7) is fixedly connected. On the side of the box body (2) close to the top of the receiving hopper (7), an opening for the first conveyor belt (8) to penetrate is provided. On both sides of the receiving hopper (7), support frames are fixedly connected. Between the two support frames on the receiving hopper (7), a driving roller for the first conveyor belt (8) to be sleeved is rotatably connected by a fixed shaft. The magnetic plate (35) is fixedly connected with the second mounting frame (23) and extends away from the box body (2) along the direction of the first conveyor belt (8).

Images