Building concrete solid waste recycling treatment device and treatment method thereof

Abstract

The invention discloses a building concrete solid waste recycling treatment device and a treatment method thereof. The treatment method comprises the following steps: 1) crushing treatment; (2) transporting and flattening; (3) removing impurities by magnetic attraction; 4) collecting metal; 5) three-stage screening and storage; (6) preparing recycled concrete; the device comprises a treatment bin, a crushing device, a conveying mechanism, a magnetic attraction mechanism, a material receiving mechanism, a three-stage screening device, a mixing mechanism and a concrete conveying frame. The crushing device is installed in the treatment bin, the conveying mechanisms are installed at the bottom of the crushing device, the two magnetic attraction mechanisms are arranged and located between the conveying mechanisms, the material receiving mechanism is located at the bottoms of the magnetic attraction mechanisms, the three-stage screening device is installed at the bottoms of the conveying mechanisms, the mixing mechanism is located at the bottom of the storage bin, and a concrete conveying frame is installed on one side of the treatment bin. The two groups of magnetic attraction mechanisms alternately work, and the magnetic attraction mechanisms are adjusted between the transportation mechanisms, so that the magnetic attraction mechanisms can fully adsorb metal impurities in recycled aggregates.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction concrete waste recycling, and in particular relates to a construction concrete solid waste recycling and treatment device and a treatment method thereof. Background Art

[0002] The large-scale recycling and utilization of concrete waste generally focuses on the optimization of a single link, namely sorting or crushing, and lacks an integrated design for collecting metal impurities in recycled aggregates and resource regeneration, making it difficult to achieve efficient treatment and high-quality recycling of concrete waste throughout the entire process.

[0003] After searching, the prior art announcement number is: CN219944086U A concrete waste recycling device for subway construction, including a water tank, a vibrating plate, a box body, a magnetic separation roller, a crushing roller, a second motor and a third motor, a crushing roller is rotatably installed inside the upper end of the box body, a second motor is provided at the front end of the box body, a rotating roller is rotatably installed under the crushing roller, a conveyor belt is rotatably sleeved on the outer wall of the rotating roller, a third motor is provided on the outer wall of the box body, a magnetic separation roller is installed inside the upper end of the box body, a vibrating plate is provided inside the lower end of the box body, a vibrating motor is provided at the lower end of the vibrating plate, a water tank is provided at one end of the box body, a water pump is provided at one end of the water tank, and a nozzle is provided at one end of the water pump; when the concrete of the prior art is conveyed by the conveyor belt after being crushed, the concrete on the conveyor belt will be locally accumulated and unevenly distributed, which will cause the magnetic separation roller to fully screen the metal parts in the concrete, reduce the purity of the concrete, and ultimately affect the quality of the recycled concrete product, making it difficult to meet high-standard construction requirements;

[0004] Further search, the prior art announcement number: CN118950663A A concrete production waste crushing and recycling system includes a box fixedly installed on the upper surface of the base, a crusher fixedly installed on the upper surface of the box, a feed port is opened on the upper surface of the crusher, an opening corresponding to the discharge port at the bottom of the crusher is opened on the upper surface of the box, and a sorting mechanism is arranged in the box; the magnetic suction plate of the prior art is fixed in position. When a large amount of metal impurities are attached to an adsorption surface of the conveyor belt outside the magnetic plate and the metal impurities are not transported to the outside of the box, the magnetic force of the magnetic suction plate will be weakened, and the metal parts in the concrete cannot be fully screened, which reduces the purity of the concrete, and ultimately affects the quality of the recycled concrete product, making it difficult to meet high-standard construction requirements. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a construction concrete solid waste recycling and treatment device and a treatment method thereof. Through the transportation mechanism, the material diverting mechanism, and the material diverting plate II on the magnetic roller, the concrete in the transportation mechanism is ensured to be evenly distributed; through the alternating operation of the two groups of magnetic suction mechanisms and the adjustment of the magnetic suction mechanisms between the transportation mechanisms, the magnetic suction mechanisms are ensured to fully adsorb the metal impurities in the recycled aggregate. After three-level screening and storage, the preparation of recycled concrete is completed.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for recycling construction concrete solid waste, comprising the following steps:

[0008] 1) Crushing: Construction concrete is transported to the feed port I on the top of the processing bin via a conveyor belt on a concrete transport rack at a speed of 1-1.5m / s. The dimensions of feed port I are 1.2m long and 0.8m wide. Concrete falls into the crushing device at a flow rate of 10-20t / h. The concrete is crushed into recycled aggregate with a particle size of 5-50mm by the crushing roller with a diameter of 1.5m and a rotation speed of 300-500r / min.

[0009] 2) Transport and leveling: The power of the transport mechanism's motor I is 5.5-7kW, driving the rotating shaft II at a speed of 180-200r / min. The eccentricity of the eccentric wheel is 30-50mm, driving the inclined plates II and III to vibrate. The bidirectional cylinder drives the material stripping plate I to reciprocate, leveling the aggregate layer.

[0010] 3) Magnetic impurity removal: Two sets of magnetic mechanisms work alternately, with each set working for 30-45 minutes. Motor II drives the magnetic roller at a speed of 200-350 r / min, and the material stripping plate II stirs the recycled aggregate to further expose metal impurities. Motor III has a power of 1.5kW and adjusts the angle of the magnetic roller via a sector gear. Motor IV has a power of 2kW and drives gear II to cooperate with the outer rack of the sliding frame, driving the sliding frame to move on the lifting plate at a speed of 100mm / min. Motor V has a power of 2.5kW and rotates shaft III at a speed of 150r / min, thereby driving the screw to rotate, causing the lifting plate to move along the sliding rod at a speed of 80mm / min, driving the sliding frame to rise and fall, and further fine-tune the height of the magnetic roller within an adjustment range of 100-300mm, so that the distance between the magnetic roller and the recycled aggregate is maintained at 50-150mm, improving the adsorption effect of the magnetic roller.

[0011] 4) Metal collection: The electric push rod pushes the receiving plate through the discharge port to the bottom of the magnetic roller at a speed of 200mm / s. After the magnetic roller is powered off for 10 seconds, the metal impurities fall into the receiving plate. The electric push rod shrinks at the same speed, and the receiving plate transfers the metal to the collection plate to complete the impurity collection;

[0012] 5) Three-stage screening and storage: Recycled aggregate enters the three-stage screening device. The aperture of the first-stage screen is 20mm, the aperture of the second-stage screen is 10mm, and the aperture of the third-stage screen is 5mm. The aggregate is screened according to particle size. The screened aggregate is temporarily stored in different areas of the storage bin to provide graded raw materials for subsequent mixing.

[0013] 6) Recycled concrete preparation:

[0014] a) Raw material ratio: The recycled aggregate in the storage bin and other raw materials in the raw material bin are added to the mixing bin at a mass ratio of 7:3. The volume of the mixing bin is 20m³. Recycled coarse aggregate with a particle size of 20-30mm accounts for 30-40% of the recycled aggregate, recycled fine aggregate with a particle size of 20-10mm accounts for 35-40% of the recycled aggregate, and recycled micro powder with a particle size of less than 5mm accounts for 25-30% of the recycled aggregate. Other raw materials include cement, natural sand, polycarboxylate high-efficiency water reducer, and early strength agent. Cement accounts for 40-50% of the other raw materials, natural sand accounts for 30-40% of the other raw materials, and polycarboxylate high-efficiency water reducer and early strength agent each account for 5-15% of the other raw materials.

[0015] b) Add water and stir: The water pump has a flow rate of 8-10m³ / h. Water is injected through the 100mm diameter water pipe II and the rotating water pipe I. The motor VI drives the mixing frame at a speed of 60-100r / min. The auger in the inner drum is driven by the 5kW motor VII at a speed of 120r / min to accelerate the mixing of the recycled concrete. The mixing time is 20-40 minutes.

[0016] c) Wall scraping and cleaning: The hydraulic cylinder pushes the scraper to remove the materials adhering to the inner wall of the mixing bin;

[0017] d) Discharging: The mixed recycled concrete is discharged through the discharge port I with a diameter of 600mm at the bottom of the mixing bin, completing the recycling process.

[0018] The construction concrete solid waste recycling and processing device includes a processing bin, a crushing device, a transportation mechanism, a magnetic attraction mechanism, a material receiving mechanism, a three-stage screening device, a mixing mechanism, and a concrete transportation rack; the top of the processing bin is provided with a feed port I, the crushing device is installed in the processing bin and is located at the bottom of the feed port I, the transportation mechanism is installed at the bottom of the crushing device, the magnetic attraction mechanism is provided in two groups and is located between the transportation mechanisms, the material receiving mechanism is located at the bottom of the magnetic attraction mechanism, the three-stage screening device is installed at the bottom of the transportation mechanism, a storage bin is installed at the bottom of the three-stage screening device, raw material bins are provided on both sides of the storage bin, the mixing mechanism is located at the bottom of the storage bin, a discharge port I is provided at the bottom of the mixing mechanism, a concrete transportation rack is installed on one side of the processing bin, and a conveyor belt is installed on the concrete transportation rack.

[0019] Baffles are provided on both sides of the crushing roller of the crushing device to prevent the crushed concrete from splashing when the crushing device crushes the building concrete and preventing the crushed concrete from entering the transportation mechanism smoothly.

[0020] The top feed end of the three-stage screening device is located at the bottom of the bottom discharge end of the transportation mechanism, and the three-stage screening device is communicated with the storage bin.

[0021] The discharge ends at the bottom of the storage bin and the raw material bin are both located at the top of the feed end of the mixing mechanism.

[0022] The transport mechanism includes an inclined plate I, an inclined plate II, an inclined plate III, a partition I, a partition II, a partition III, a partition IV, a connecting rod, a rotating shaft I, a rotating shaft II, and a motor I; the partition I is installed at the bottom of the crushing device in the processing bin, a partition II is installed at the bottom of the partition I, the partition I and the partition II are separated by a material receiving opening of the material receiving mechanism, the partition III is mirrored to the partition I, the partition III and the bottom partition IV are separated by a material receiving opening of the material receiving mechanism, the inclined plate I is installed in the processing bin, a section of the inclined plate I is fixedly connected to the partition I, the partition II and the partition III are both provided with a sliding groove I on one side, the inclined plate II and the inclined plate III are fixed by several groups of connecting rods The inclined plate II and the inclined plate III are slidably installed at the bottom of the inclined plate I in the processing bin, one end of the inclined plate II is slidably installed in the sliding groove I on one side of the partition III, and one end of the inclined plate III is slidably installed in the sliding groove I on one side of the partition II. The rotating shaft I is provided with two groups and is installed at the bottom of the inclined plate III. Two groups of driven wheels are provided on the rotating shaft I. The two groups of rotating shafts II are rotatably installed at the bottom of the rotating shaft I. Two groups of eccentric wheels are provided on the rotating shaft II. The eccentric wheels are meshed with the driven wheels. One end of the rotating shaft II passes through the processing bin and is provided with a pulley. The two groups of pulleys are connected by belts. The motor I is installed on the side wall of the processing bin, and the output end of the motor I is fixedly connected to a group of rotating shaft II.

[0023] The blanking ends of the inclined plates I and II are both provided with a material shifting mechanism, which includes a material shifting plate I and a two-way cylinder; the two-way cylinder is installed at the bottom of the blanking ends of the inclined plates I and II, and the material shifting plate I is installed at the telescopic end of the two-way cylinder;

[0024] Two groups of mounting openings are provided on the side wall of the processing chamber, one group of mounting openings is located between the inclined plate I and the inclined plate II, and the other group of mounting openings is located between the inclined plate II and the inclined plate III. Each group of mounting openings is arranged in a mirror image. A sliding groove II is provided on the side wall of the processing chamber, and the sliding groove II is connected to the mounting opening.

[0025] The magnetic attraction mechanism is provided with two groups, one group of magnetic attraction mechanisms is installed between the transport mechanism through the installation port located between the inclined plate I and the inclined plate II, and the other group of magnetic attraction mechanisms is installed between the transport mechanism through the installation port located between the inclined plate II and the inclined plate III; the magnetic attraction mechanism includes a magnetic roller, a material stripping plate II, a rotating disk, a motor II, a motor III, a sliding frame, a lifting plate, a motor IV, a screw, a sliding rod, a rotating shaft III, a motor V, a gear I, and a gear II; the rotating disk is installed in the installation port, a limit plate is provided on the inside of the rotating disk, and a limit ring is provided on the outside of the rotating disk. The limit plate and the limit ring ensure that the rotating disk can only move in the installation port. Two groups of magnetic attraction rollers are rotatably installed between each group of rotating disks, and one end of the two groups of magnetic attraction rollers passes through a group of rotating disks and is provided with a pulley. The two groups of pulleys are connected by belts, and the output shaft of motor II is fixedly connected to a group of magnetic attraction rollers. Motor II is installed on the rotating disk at the pulley end of the magnetic attraction roller. The magnetic attraction roller belt The gear train of said motor is mounted on a link board, and the gear train of said motor is mounted on a link board, wherein said link board is mounted on a link board of said motor, and said gear train is mounted on a link board of said motor.

[0026] The magnetic roller is provided with several groups of shifting plates II. When the magnetic roller absorbs metal impurities, the shifting plates II further shift the recycled aggregate, so that the metal impurities inside the recycled aggregate are fully in contact with the magnetic roller, which significantly improves the adsorption efficiency and adsorption effect of the magnetic roller on the metal impurities. At the same time, the shifting of the recycled aggregate by the shifting plates II can also make the distribution of the recycled aggregate on the transportation mechanism more uniform, avoid the situation of local excessive accumulation, and ensure that the subsequent screening and processing processes can be carried out more smoothly.

[0027] The material receiving mechanism includes a material receiving plate, an electric push rod, a collecting plate, and a connecting plate; discharge ports are provided on both sides of the processing bin, and the positions of the discharge ports correspond to the material receiving ports separated by partitions I and II, and the material receiving ports separated by partitions III and IV, respectively. The collecting plate is installed on the side wall of the processing bin, and the collecting plate is located outside the discharge port. The material receiving end of the collecting plate is sloped, and two groups of sliding grooves III are provided at the bottom of the collecting plate. The material receiving plate and the collecting plate are slidably installed, and the material receiving plate passes through the discharge port and the material receiving port and is located at the bottom of the magnetic roller. The electric push rod is provided with two groups and is installed at the bottom of the collecting plate. The telescopic end of the electric push rod is provided with a connecting plate, and the connecting plate is slidably installed in the sliding groove III and fixedly connected to the material receiving plate.

[0028] The mixing mechanism includes a stirring frame, a water pipe I, a sleeve, a water pipe II, a water pump, a motor VI, a fixed rod, a mixing bin, a scraper, a hydraulic cylinder, an inner tube, an auger, and a motor VII; the mixing bin is installed at the bottom of the processing bin, and a discharge port I is provided at the bottom of the mixing bin. The water pipe I is rotatably installed in the mixing bin through a fixed rod in the mixing bin, a water outlet is provided at the top of the water pipe I, the bottom end of the water pipe I passes through the bottom of the mixing bin and is rotatably installed with a sleeve, the water pipe II is installed at the bottom of the processing bin, one end of the water pipe II is fixedly connected to the sleeve, the other end of the water pipe II is provided with a water inlet, and the water inlet end is installed Water pump, the motor VI is installed on the side wall of the processing bin, the pulley at the output end of the motor VI is connected to the pulley at the bottom end of the water pipe I through a belt, the stirring frame is located in the mixing bin and is fixedly connected to the water pipe I, two groups of inner cylinders are installed on the stirring frame, the bottom end of the inner cylinder is provided with a feed port II, the top end of the inner cylinder is provided with a discharge port II, an auger is installed in the inner cylinder, the motor VII is installed on the top of the stirring frame, the output shaft of the motor VII is fixedly connected to the auger, a waterproof shell is provided on the outside of the motor VII, two groups of hydraulic cylinders are provided on both sides of the stirring frame, a waterproof shell is provided on the outside of the hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to the scraper.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1) The output end of motor I drives the rotating shaft II to rotate, and the eccentric wheel on the rotating shaft II rotates, causing the rotating shaft I to push up with two sets of driven wheels, driving the inclined plate III to shake, so that the inclined plate II moves synchronously, so that the recycled aggregate is evenly distributed during transportation; the bidirectional cylinder drives the material shifting plate I to move back and forth, and the recycled aggregate on the inclined plates II and III is initially flattened to avoid local excessive accumulation. When the magnetic roller absorbs metal impurities, the material shifting plate II further shifts the recycled aggregate, so that the metal impurities inside the recycled aggregate are fully in contact with the magnetic roller, which significantly improves the magnetic roller's adsorption efficiency and adsorption effect on metal impurities, ensuring that the magnetic attraction mechanism can more fully and efficiently absorb metal impurities in the recycled aggregate.

[0031] 2) During the transportation of recycled aggregate on the transport mechanism, motor II drives the two sets of magnetic rollers to rotate synchronously through belt drive to absorb metal impurities in the recycled aggregate; the fan-shaped gear at the output end of motor III rotates gear I on the rotating disk at the pulley end of the magnetic roller to adjust the adsorption angle of the magnetic roller; motor IV drives gear II to cooperate with the outer rack of the sliding frame, driving the sliding frame to move on the lifting plate, and motor V rotates shaft III, thereby driving the lead screw to rotate, causing the lifting plate to move along the sliding rod, driving the sliding frame to rise and fall, and further fine-tuning the height of the magnetic roller and the distance between the magnetic roller and the recycled aggregate to prevent the magnetic force of the magnetic roller from weakening when a large amount of metal impurities are adsorbed on the surface of the magnetic roller, thereby reducing the adsorption effect of the magnetic roller and failing to fully screen the metal parts in the concrete;

[0032] 3) When one set of magnetic suction mechanisms absorbs more metal impurities for cleaning, the other set of magnetic suction mechanisms begins to absorb the metal impurities in the recycled aggregate. The two sets of magnetic suction mechanisms work alternately to ensure that the adsorption of metal impurities in the recycled aggregate is carried out uninterruptedly, avoiding the stagnation of the recycling process due to the cleaning of the magnetic suction mechanisms, greatly improving the overall work efficiency and ensuring the processing progress of the recycled aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Attachment Figure 1 This is a structural schematic diagram of a construction concrete solid waste recycling and treatment device according to the present invention;

[0034] Attachment Figure 2 It is a concrete transport direction diagram of a construction concrete solid waste recycling and treatment device;

[0035] Attachment Figure 3 It is attached Figure 1 Schematic diagram of the transportation organization structure Figure 1 ;

[0036] Attachment Figure 4 It is attached Figure 1 Schematic diagram of the transportation organization structure Figure 2 ;

[0037] Attachment Figure 5 It is attached Figure 3 Schematic diagram of the structure of the middle material transfer mechanism;

[0038] Attachment Figure 6 It is attached Figure 1 Schematic diagram of the magnetic attraction mechanism structure;

[0039] Attachment Figure 7 It is attached Figure 6 Schematic diagram of the installation position of the middle rotating disk;

[0040] Attachment Figure 8 It is attached Figure 6 Schematic diagram of the structure of the middle magnetic roller;

[0041] Attachment Figure 9 It is attached Figure 6 Schematic diagram of the mobile rack structure;

[0042] Attachment Figure 10 It is attached Figure 9 Schematic diagram of the connection between the middle moving frame and the rotating disk;

[0043] Attachment Figure 11 It is attached Figure 6 Schematic diagram of the middle lifting plate structure;

[0044] Attachment Figure 12 It is attached Figure 1 Schematic diagram of the position of the center material receiving mechanism;

[0045] Attachment Figure 13 It is attached Figure 1 Schematic diagram of the structure of the center material receiving mechanism;

[0046] Attachment Figure 14 It is attached Figure 1 Schematic diagram of the hybrid mechanism structure Figure 1 ;

[0047] Attachment Figure 15 It is attached Figure 1 Schematic diagram of the hybrid mechanism structure Figure 2 ;

[0048] Attachment Figure 16 This is a schematic diagram of the appearance of a construction concrete solid waste recycling and treatment device of the present invention;

[0049] In the figure: 1. Processing bin; 101. Feed port I; 102. Discharge port I; 103. Baffle; 104. Slide trough II; 105. Mounting port; 106. Discharge port; 107. Raw material bin; 108. Storage bin; 2. Crushing device; 3. Transport mechanism; 31. Inclined plate I; 32. Inclined plate II; 33. Inclined plate III; 34. Partition I; 35. Partition II; 3501. Slide trough I; 36. Partition III ; 37, partition plate IV; 38, connecting rod; 39, rotating shaft I; 310, rotating shaft II; 311, motor I; 312, material feeding mechanism; 3121, material feeding plate I; 3122, two-way cylinder; 4, magnetic mechanism; 41, magnetic roller; 4101, material feeding plate II; 42, rotating disk; 4201, limiting ring; 4202, limiting plate; 43, motor II; 44, motor III; 45, sliding frame; 4 6. Lifting plate; 47. Motor IV; 48. Lead screw; 49. Sliding rod; 410. Rotating shaft III; 411. Motor V; 412. Fixed plate; 413. Gear I; 414. Sector gear; 415. Gear II; 416. Rack; 5. Material receiving mechanism; 51. Material receiving plate; 52. Electric push rod; 53. Collecting plate; 5301. Sliding trough III; 54. Connecting plate; 6. Three-stage screening device; 7. Mixing mechanism; 71. Mixing frame; 72. Water pipe I; 7201. Water outlet; 73. Casing; 74. Water pipe II; 7401. Water inlet; 75. Water pump; 76. Motor VI; 77. Fixed rod; 78. Mixing bin; 79. Scraper; 710. Hydraulic cylinder; 711. Inner cylinder; 712. Auger; 713. Motor VII; 714. Feed port II; 715. Discharge port II; 8. Concrete transport rack. DETAILED DESCRIPTION

[0050] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 work are within the scope of protection of the present invention. To facilitate the understanding of those in this technical field, the following is combined with the attached Figure 1-16 , the technical solution of the present invention is further described in detail.

[0051] Example 1

[0052] 1. A method for recycling construction concrete solid waste, comprising the following steps:

[0053] 1) Crushing: Construction concrete is transported to the feed port I on the top of the processing bin via a conveyor belt on a concrete transport rack at a speed of 1.5m / s. The dimensions of feed port I are 1.2m long and 0.8m wide. Concrete falls into the crushing device at a flow rate of 15t / h. It is crushed into recycled aggregate with a particle size of 5-30mm by a crushing roller with a diameter of 1.5m and a rotation speed of 500r / min.

[0054] 2) Transport and leveling: The transport mechanism's motor I has a power of 5.5kW, driving the rotating shaft II at a speed of 180r / min. The eccentric wheel has an eccentricity of 50mm, which drives the inclined plates II and III to vibrate. The bidirectional cylinder drives the material stripping plate I to reciprocate, leveling the aggregate layer.

[0055] 3) Magnetic impurity removal: Two sets of magnetic mechanisms work alternately, with each set working for 45 minutes. Motor II drives the magnetic roller at 350 r / min, and the material stripper plate II stirs the recycled aggregate to further expose metal impurities. Motor III has a power of 1.5 kW and adjusts the angle of the magnetic roller via a sector gear. Motor IV has a power of 2 kW and drives gear II to cooperate with the outer rack of the slide frame, driving the slide frame to move on the lifting plate at a speed of 100 mm / min. Motor V has a power of 2.5 kW and rotates shaft III at a speed of 150 r / min, thereby driving the lead screw to rotate, causing the lifting plate to move along the slide rod at a speed of 80 mm / min, driving the slide frame to rise and fall. The height of the magnetic roller can be further fine-tuned within a range of 150 mm to maintain a distance of 100 mm between the magnetic roller and the recycled aggregate, thereby improving the magnetic roller's adsorption effect.

[0056] 4) Metal collection: The electric push rod pushes the receiving plate through the discharge port to the bottom of the magnetic roller at a speed of 200mm / s. After the magnetic roller is powered off for 10 seconds, the metal impurities fall into the receiving plate. The electric push rod shrinks at the same speed, and the receiving plate transfers the metal to the collection plate to complete the impurity collection;

[0057] 5) Three-stage screening and storage: Recycled aggregate enters the three-stage screening device. The aperture of the first-stage screen is 20mm, the aperture of the second-stage screen is 10mm, and the aperture of the third-stage screen is 5mm. The aggregate is screened according to particle size. The screened aggregate is temporarily stored in different areas of the storage bin to provide graded raw materials for subsequent mixing.

[0058] 6) Recycled concrete preparation

[0059] a) Raw material ratio: The recycled aggregate in the storage bin and other raw materials in the raw material bin are added to the mixing bin at a mass ratio of 6:4. The volume of the mixing bin is 20m³. Recycled coarse aggregate with a particle size of 20-30mm accounts for 40% of the recycled aggregate, recycled fine aggregate with a particle size of 20-10mm accounts for 35% of the recycled aggregate, and recycled micro powder with a particle size of less than 5mm accounts for 25% of the recycled aggregate. The other raw materials include cement, natural sand, polycarboxylate high-efficiency water reducer, and early strength agent. Cement accounts for 40% of the other raw materials, natural sand accounts for 30% of the other raw materials, and polycarboxylate high-efficiency water reducer and early strength agent each account for 15% of the other raw materials.

[0060] b) Add water and stir: The water pump has a flow rate of 10m³ / h and is injected through the 100mm diameter water pipe II and the rotating water pipe I. The motor VI drives the mixing frame to rotate at a speed of 100r / min. The auger in the inner drum is driven by the 5kW motor VII at a speed of 120r / min to accelerate the mixing of the recycled concrete. The mixing time is 40 minutes.

[0061] c) Wall scraping and cleaning: The hydraulic cylinder pushes the scraper to remove the materials adhering to the inner wall of the mixing bin;

[0062] d) Discharge and solidification: The mixed recycled concrete is discharged through the discharge port I with a diameter of 600mm at the bottom of the mixing bin, completing the recycling process.

[0063] The construction concrete solid waste recycling and processing device includes a processing bin 1, a crushing device 2, a transportation mechanism 3, a magnetic attraction mechanism 4, a material receiving mechanism 5, a three-stage screening device 6, a mixing mechanism 7, and a concrete transportation rack 8; the top of the processing bin 1 is provided with a feed port I 101, the crushing device 2 is installed in the processing bin 1 and is located at the bottom of the feed port I 101, the transportation mechanism 3 is installed at the bottom of the crushing device 2, the magnetic attraction mechanism 4 is provided with two groups and is located between the transportation mechanisms 3, the material receiving mechanism 5 is located at the bottom of the magnetic attraction mechanism 4, the three-stage screening device 6 is installed at the bottom of the transportation mechanism 3, a storage bin 108 is installed at the bottom of the three-stage screening device 6, and raw material bins 107 are provided on both sides of the storage bin 108, the mixing mechanism 7 is located at the bottom of the storage bin 108, and a discharge port I 102 is provided at the bottom of the mixing mechanism 7, a concrete transportation rack 8 is installed on one side of the processing bin 1, and a conveyor belt is installed on the concrete transportation rack 8;

[0064] The crushing device 2 is provided with baffles 103 on both sides of the crushing roller to prevent the crushed concrete from splashing when the crushing device 2 crushes the building concrete and preventing it from entering the transport mechanism 3 smoothly;

[0065] The top feed end of the three-stage screening device 6 is located at the bottom of the bottom discharge end of the conveying mechanism 3, and the three-stage screening device 6 is connected to the storage bin 108;

[0066] The bottom discharge ends of the storage bin 108 and the raw material bin 107 are both located at the top of the feeding end of the mixing mechanism 7;

[0067] From the above description, it can be seen that: the construction concrete is transported to the feed port Ⅰ101 on the top of the processing bin 1 through the conveyor belt on the concrete transport rack 8, and the construction concrete falls into the crushing device 2 through the feed port Ⅰ101. The crushing device 2 crushes the construction concrete into recycled aggregate. Subsequently, the recycled aggregate is carried by the transport mechanism 3 to the tertiary screening device 6. During the transportation process, the magnetic attraction mechanism 4 absorbs the metal impurities in the recycled aggregate, and the receiving mechanism 5 is responsible for collecting the metal impurities absorbed by the magnetic attraction mechanism 4. The recycled aggregate after magnetic attraction enters the tertiary screening device 6, and is accurately graded and screened according to the particle size. After screening, it enters different areas of the storage bin 108 for storage according to the particle size. Finally, the recycled aggregates of different particle sizes enter the mixing mechanism 7 according to the proportion with other raw materials, and are mixed into new finished concrete in the mixing mechanism 7. Finally, the finished concrete is output from the discharge port Ⅰ102 at the bottom of the mixing mechanism 7.

[0068] The transport mechanism 3 includes an inclined plate I 31, an inclined plate II 32, an inclined plate III 33, a partition I 34, a partition II 35, a partition III 36, a partition IV 37, a connecting rod 38, a rotating shaft I 39, a rotating shaft II 310, and a motor I 311; the partition I 34 is installed at the bottom of the crushing device 2 in the processing bin 1, and a partition II 35 is installed at the bottom of the partition I 34. The partition I 34 and the partition II 35 are separated by a material receiving port of the receiving mechanism 5. The partition III 36 is mirror-imaged with the partition I 34, and the partition III 36 and the bottom partition IV 37 are separated by a material receiving port of the receiving mechanism 5. The inclined plate I 31 is installed in the processing bin 1, and a section of the inclined plate I 31 is fixedly connected to the partition I 34. The partition II 35 and the partition III 36 are both provided with a sliding groove I 3501 on one side. The inclined plate II 32 and the inclined plate III 33 are connected by a sliding groove I 3501. The dry group connecting rod 38 is fixedly connected, the inclined plate II 32 and the inclined plate III 33 are slidably installed at the bottom of the inclined plate I 31 in the processing chamber 1, one end of the inclined plate II 32 is slidably installed in the sliding groove I 3501 on one side of the partition III 36, and one end of the inclined plate III 33 is slidably installed in the sliding groove I 3501 on one side of the partition II 35. The rotating shaft I 39 is provided with two groups and is installed at the bottom of the inclined plate III 33. Two groups of driven wheels are provided on the rotating shaft I 39. The two groups of rotating shafts II 310 are rotatably installed at the bottom of the rotating shaft I 39. Two groups of eccentric wheels are provided on the rotating shaft II 310. The eccentric wheels are meshed with the driven wheels. One end of the rotating shaft II 310 passes through the processing chamber 1 and is provided with a pulley. The two groups of pulleys are connected by a belt. The motor I 311 is installed on the side wall of the processing chamber 1, and the output end of the motor I 311 is fixedly connected to a group of rotating shafts II 310;

[0069] The material-diverting mechanism 312 is provided at the blanking end of the inclined plate I 31 and the inclined plate II 32. The material-diverting mechanism 312 includes a material-diverting plate I 3121 and a two-way cylinder 3122. The two-way cylinder 3122 is installed at the bottom of the blanking end of the inclined plate I 31 and the inclined plate II 32. The material-diverting plate I 3121 is installed at the telescopic end of the two-way cylinder 3122.

[0070] From the above description, it can be seen that when the transport mechanism 3 is started, the output end of the motor I 311 drives the rotating shaft II 310 to rotate, and the eccentric wheel on the rotating shaft II 310 rotates, so that the rotating shaft I 39 carries the two sets of driven wheels upward, driving the inclined plate III 33 to shake, and the inclined plates II 32 and III 33 are fixedly connected by the connecting rod 38, so that the inclined plate II 32 moves synchronously, one end of the inclined plate II 32 slides in the sliding groove I 3501 of the partition III 36, and one end of the inclined plate III 33 slides in the sliding groove I 3501 of the partition II 35, so that the recycled aggregate moves toward the blanking end. When the recycled aggregate reaches the blanking end of the inclined plates I 31 and II 32, the two-way cylinder 3122 drives the diverter plate I 3121 to reciprocate, and the recycled aggregate on the inclined plates II 32 and III 33 is preliminarily flattened, ensuring that the magnetic suction mechanism 4 can more fully and efficiently absorb the metal impurities in the recycled aggregate.

[0071] Two groups of mounting openings 105 are provided on the side wall of the processing chamber 1, one group of mounting openings 105 is located between the inclined plate I 31 and the inclined plate II 32, and the other group of mounting openings 105 is located between the inclined plate II 32 and the inclined plate III 33. Each group of mounting openings 105 is arranged in a mirror image. A sliding groove II 104 is provided on the side wall of the processing chamber 1, and the sliding groove II 104 is connected to the mounting opening 105;

[0072] The magnetic attraction mechanism 4 is provided with two groups, one group of magnetic attraction mechanism 4 is installed between the transport mechanism 3 through the installation opening 105 located between the inclined plate I 31 and the inclined plate II 32, and the other group of magnetic attraction mechanism 4 is installed between the transport mechanism 3 through the installation opening 105 located between the inclined plate II 32 and the inclined plate III 33; the magnetic attraction mechanism 4 includes a magnetic roller 41, a material stripping plate II 4101, a rotating disk 42, a motor II 43, a motor III 44, a sliding frame 45, a lifting plate 46, a motor IV 47, a screw 48, a sliding rod 49, a rotating shaft III 410, a motor V 411, a gear I 413, and a gear II 415; The rotating disk 42 is installed in the installation opening 105, and a limit plate 4202 is provided on the inside of the rotating disk 42, and a limit ring 4201 is provided on the outside of the rotating disk 42. The limit plate 4202 and the limit ring 4201 ensure that the rotating disk 42 can only move in the installation opening 105. Two groups of magnetic rollers 41 are rotatably installed between each group of rotating disks 42. One end of the two groups of magnetic rollers 41 passes through a group of rotating disks 42 and is provided with a pulley. The two groups of pulleys are connected by a belt. The output shaft of the motor II 43 is fixedly connected to a group of magnetic rollers 41. The motor II 43 is installed on the rotating disk 42 at the pulley end of the magnetic roller 41. The pulley of the magnetic roller 41 The rotating disk 42 at the end is fixedly connected to the gear I 413, and the motor III 44 is located on one side of the gear I 413. The output end of the motor III 44 is provided with a sector gear 414, which meshes with the gear I 413. A sliding frame 45 is rotatably mounted on the outer limiting ring 4201 of each set of rotating disks 42. The motor III 44 is fixedly connected to the sliding frame 45. Two sets of racks 416 are provided on the outer side of the sliding frame 45. The lifting plate 46 is slidably connected to the rack 416 on the outer side of the sliding frame 45. A motor IV 47 is installed on the top of the lifting plate 46. The output shaft of the motor IV 47 has two sets of gears II 415 that mesh with the two sets of racks 416. The lifting plate 46 is provided with a fixed plate 412 on both the upper and lower sides, and a sliding rod 49 and a lead screw 48 are installed between the fixed plates 412. The lifting plate 46 is slidably connected to the sliding rod 49 and is threadedly connected to the lead screw 48. A bevel gear is provided at the top of the lead screw 48. The rotating shaft III 410 is rotatably installed in the processing chamber 1 and is located on one side of the baffle 103. Both ends of the rotating shaft III 410 pass through the processing chamber 1. The bevel gears at both ends of the rotating shaft III 410 are engaged with the bevel gear at the top of the lead screw 48. The motor V 411 is installed on one side of the baffle 103. The bevel gear of the output shaft of the motor V 411 is engaged with the bevel gear in the middle of the rotating shaft III 410.

[0073] The magnetic roller 41 is provided with a plurality of groups of diverting plates II 4101. When the magnetic roller 41 absorbs metal impurities, the diverting plates II 4101 further divert the recycled aggregate, so that the metal impurities inside the recycled aggregate are fully in contact with the magnetic roller 41, which significantly improves the adsorption efficiency and adsorption effect of the magnetic roller 41 on the metal impurities. At the same time, the diverting plates II 4101 divert the recycled aggregate, which can also make the distribution of the recycled aggregate on the transport mechanism 3 more uniform, avoid the situation of local excessive accumulation, and ensure that the subsequent screening and processing steps can be carried out more smoothly.

[0074] From the above description, it can be seen that: during the transportation of the recycled aggregate on the transport mechanism 3, the two sets of magnetic suction mechanisms 4 also operate alternately. The motor II 43 drives the two sets of magnetic suction rollers 41 to rotate synchronously through the belt drive to absorb the metal impurities in the recycled aggregate; the fan gear 414 at the output end of the motor III 44 rotates the gear I 413 on the rotating disk 42 at the pulley end of the magnetic suction roller 41 to adjust the suction angle of the magnetic suction roller; the motor IV 47 drives the gear II 415 to cooperate with the outer rack 416 of the sliding frame 45 to drive the sliding frame 45 to move on the lifting plate 46, and the motor V 411 rotates the shaft III 41 0 rotates, thereby driving the lead screw 48 to rotate, causing the lifting plate 46 to move along the sliding rod 49, driving the sliding frame 45 to rise and fall, and further fine-tuning the height of the magnetic roller 41 and the distance between the magnetic roller 41 and the recycled aggregate. The material shifting plate II 4101 continuously shifts the recycled aggregate to fully expose the metal impurities and improve the adsorption effect. The treated recycled aggregate continues to move to the three-stage screening device 6. When one group of magnetic suction mechanisms 4 absorbs more metal impurities for cleaning, the other group of magnetic suction mechanisms 4 begins to absorb the metal impurities in the recycled aggregate, and the two groups of magnetic suction mechanisms 4 work alternately.

[0075] The material receiving mechanism 5 includes a material receiving plate 51, an electric push rod 52, a collecting plate 53, and a connecting plate 54; a discharge port 106 is provided on both sides of the processing bin 1, and the positions of the discharge port 106 correspond to the material receiving ports separated by the partitions I34 and II35, and the material receiving ports separated by the partitions III36 and IV37, respectively. The collecting plate 53 is installed on the side wall of the processing bin 1, and the collecting plate 53 is located outside the discharge port 106. The material receiving end of the collecting plate 53 is sloped, and two groups of sliding grooves III5301 are provided at the bottom of the collecting plate 53. The material receiving plate 51 is slidably installed with the collecting plate 53, and the material receiving plate 51 passes through the discharge port 106 and the material receiving port and is located at the bottom of the magnetic roller 41. The electric push rod 52 is provided with two groups and is installed at the bottom of the collecting plate 53. The telescopic end of the electric push rod 52 is provided with a connecting plate 54, and the connecting plate 54 is slidably installed in the sliding groove III5301 and is fixedly connected to the material receiving plate 51;

[0076] From the above description, it can be seen that: when there are more metal impurities attached to the surface of the magnetic roller 41, the two groups of electric push rods 52 synchronously push the receiving plate 51 through the discharge port 106 and the receiving port, and accurately reach the bottom of the magnetic roller 41. At this time, the magnetic roller 41 is powered off and loses its magnetic force. The metal impurities adsorbed on the surface of the magnetic roller 41 fall onto the receiving plate 51. Subsequently, the two groups of electric push rods 52 shrink synchronously, driving the receiving plate 51 to shrink into the collecting plate 53. The metal impurities on the surface of the receiving plate 51 reach the top of the collecting plate 53, which is convenient for subsequent collection and processing.

[0077] The mixing mechanism 7 includes a stirring frame 71, a water pipe I 72, a sleeve 73, a water pipe II 74, a water pump 75, a motor VI 76, a fixed rod 77, a mixing bin 78, a scraper 79, a hydraulic cylinder 710, an inner tube 711, a screw dragon 712, and a motor VII 713; the mixing bin 78 is installed at the bottom of the processing bin 1, and a discharge port I 102 is provided at the bottom of the mixing bin 78. The water pipe I 72 is rotatably installed in the mixing bin 78 through the fixed rod 77 in the mixing bin 78. A water outlet 7201 is provided at the top of the water pipe I 72. The bottom end of the water pipe I 72 passes through the bottom of the mixing bin 78 and is rotatably installed with a sleeve 73. The water pipe II 74 is installed at the bottom of the processing bin 1. One end of the water pipe II 74 is fixedly connected to the sleeve 73, and the other end of the water pipe II 74 is provided with a water inlet 7401. A water pump 75 is installed at the 01 end, the motor VI 76 is installed on the side wall of the processing bin 1, and the pulley at the output end of the motor VI 76 is connected to the pulley at the bottom end of the water pipe I 72 through a belt. The stirring frame 71 is located in the mixing bin 78 and is fixedly connected to the water pipe I 72. Two groups of inner cylinders 711 are installed on the stirring frame 71. The bottom end of the inner cylinder 711 is provided with a feed port II 714, and the top end of the inner cylinder 711 is provided with a discharge port II 715. An auger 712 is installed in the inner cylinder 711, and the motor VII 713 is installed on the top of the stirring frame 71. The output shaft of the motor VII 713 is fixedly connected to the auger 712. A waterproof shell is provided on the outside of the motor VII 713. Two groups of hydraulic cylinders 710 are provided on both sides of the stirring frame 71. A waterproof shell is provided on the outside of the hydraulic cylinder 710. The output end of the hydraulic cylinder 710 is fixedly connected to the scraper 79.

[0078] From the above description, it can be seen that: the screened recycled aggregate and other raw materials in the raw material bin are added to the mixing mechanism 7 in proportion, the water pump 75 is started, and water flows from the water inlet 7401 at one end of the water pipe II 74 into the water pipe I 72 in the mixing bin 78, and then flows out from the water outlet 7201 at the top of the water pipe I 72, providing the necessary moisture for mixing the recycled aggregate and the raw materials; the motor VI 76 runs, driving the water pipe I 72 to rotate, so that the stirring frame 71 rotates to stir the recycled aggregate and the raw materials; the motor VII 713 drives the auger 712 to rotate, so that the materials at the bottom of the mixing bin 78 and the materials at the top of the mixing bin 78 are mixed faster; after the overtime is completed, the mixed concrete raw materials are discharged from the discharge port I 102. After the raw materials are discharged, the hydraulic cylinder 710 pushes the scraper 79 to scrape off the raw materials adhering to the wall of the mixing bin 78.

[0079] After the discharged recycled concrete is sampled and solidified, its compressive strength, water absorption rate, and carbonation depth are measured and tested according to standards. The average value of the test results is recorded in the following Table 1:

[0080] Example 1 Compressive strength / MPa Water absorption / % Carbonization depth / mm 69.3 4.2 0.83

[0081] Example 2

[0082] A method for recycling construction concrete solid waste: the other steps are the same as those in Example 1, except that: recycled coarse aggregate with a particle size of 20-30 mm accounts for 35% of the recycled aggregate, recycled fine aggregate with a particle size of 20-10 mm accounts for 35% of the recycled aggregate, and recycled micropowder with a particle size of less than 5 mm accounts for 30% of the recycled aggregate; the other raw materials include cement, natural sand, polycarboxylic acid high-efficiency water reducer, and early strength agent; wherein cement accounts for 45% of the other raw materials, natural sand accounts for 30% of the other raw materials, and the polycarboxylic acid high-efficiency water reducer and early strength agent each account for 10% of the other raw materials;

[0083] After the discharged recycled concrete is sampled and solidified, its compressive strength, water absorption rate, and carbonation depth are measured according to standard tests. The average value of the test results is recorded in the following Table 2:

[0084] Example 2 Compressive strength / MPa Water absorption / % Carbonization depth / mm 67.6 4.8 0.92

[0085] Example 3

[0086] A method for recycling construction concrete solid waste: the other steps are the same as those in Example 1, except that: recycled coarse aggregate with a particle size of 20-30 mm accounts for 30% of the recycled aggregate, recycled fine aggregate with a particle size of 20-10 mm accounts for 40% of the recycled aggregate, and recycled micropowder with a particle size of less than 5 mm accounts for 30% of the recycled aggregate; the other raw materials include cement, natural sand, polycarboxylic acid high-efficiency water reducer, and early strength agent; wherein cement accounts for 50% of the other raw materials, natural sand accounts for 40% of the other raw materials, and the polycarboxylic acid high-efficiency water reducer and early strength agent each account for 5% of the other raw materials;

[0087] After the discharged recycled concrete is sampled and solidified, its compressive strength, water absorption rate, and carbonation depth are measured and tested according to standards. The average value of the test results is recorded in the following Table 3:

[0088] Example 3 Compressive strength / MPa Water absorption / % Carbonization depth / mm 67.2 4.5 0.88

[0089] Comparative Example 1

[0090] A method for recycling and utilizing construction concrete solid waste: The other steps are the same as those in Example 1, except that the recycled aggregate in the storage bin and the other raw materials in the raw material bin are added to the mixing bin at a mass ratio of 8:2; the discharged recycled concrete is sampled and solidified, and then the compressive strength, water absorption rate, and carbonation depth are measured by standard tests. The average values ​​of the test results are recorded in Table 4 below:

[0091] Comparative Example 1 Compressive strength / MPa Water absorption / % Carbonization depth / mm 57.5 6.25 1.25

[0092] Comparative Example 2

[0093] A method for recycling construction concrete solid waste: The other steps are the same as those in Example 1, except that no polycarboxylate high-efficiency water reducer is added; after solidification, the discharged recycled concrete is sampled and tested for compressive strength, water absorption, and carbonation depth, and the average values ​​of the test results are recorded in Table 5 below:

[0094] Comparative Example 2 Compressive strength / MPa Water absorption / % Carbonization depth / mm 55.3 6.35 1.38

[0095] The compressive strength, water absorption, and durability of the concrete samples prepared from the recycled concrete prepared in Examples 1-3 and Comparative Examples 1-2 were tested after curing for 28 days. The compressive strength and water absorption of the concrete samples were tested in accordance with the standard GB / T50081-2019 "Standard for Test Methods for Physical and Mechanical Properties of Concrete", and the durability was measured by measuring the carbonization depth of the samples in accordance with the standard GB / T50082-2024 "Standard for Test Methods for Long-term Performance and Durability of Concrete".

[0096] By comparing Tables 1-5, it is found that the compressive strength of the concrete sample prepared by the present invention reaches 69.3 MPa, the water absorption rate is reduced to 4.2%, and the carbonization depth is reduced to 0.83 mm. All performance test data are better than those of the comparative example.

[0097] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0098] To sum up, including but not limited to motors, electric push rods, hydraulic cylinders, water pumps, two-way cylinders and other electronic or electrical components are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, which are not within the scope of protection of the present invention; to sum up, including but not limited to motors, and motor output transmission systems are all provided with protective covers to prevent dust overflowing during the crushing process from causing wear to the transmission system; in order to better adapt to environmental protection requirements, in the process of recycling construction concrete solid waste, the problem of dust overflow is solved by adding dust removal devices or dust reduction devices in the prior art externally.

[0099] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A construction concrete solid waste recycling and processing device, comprising a processing chamber, a crushing device, a transport mechanism, a magnetic suction mechanism, a material receiving mechanism, a three-stage screening device, a mixing mechanism, and a concrete transport frame; characterized in that A feed port I is provided on the top of the processing bin, the crushing device is installed in the processing bin and is located at the bottom of the feed port I, the transportation mechanism is installed at the bottom of the crushing device, the magnetic attraction mechanism is provided in two groups and is located between the transportation mechanisms, the material receiving mechanism is located at the bottom of the magnetic attraction mechanism, the three-stage screening device is installed at the bottom of the transportation mechanism, a storage bin is installed at the bottom of the three-stage screening device, raw material bins are provided on both sides of the storage bin, the mixing mechanism is located at the bottom of the storage bin, a discharge port I is provided at the bottom of the mixing mechanism, a concrete transport rack is installed on one side of the processing bin, and a conveyor belt is installed on the concrete transport rack; The magnetic attraction mechanism is provided with two groups, one group of magnetic attraction mechanisms is installed between the transport mechanism through the installation port located between the inclined plate I and the inclined plate II, and the other group of magnetic attraction mechanisms is installed between the transport mechanism through the installation port located between the inclined plate II and the inclined plate III; the magnetic attraction mechanism includes a magnetic roller, a material stripping plate II, a rotating disk, a motor II, a motor III, a sliding frame, a lifting plate, a motor IV, a screw, a sliding rod, a rotating shaft III, a motor V, a gear I, and a gear II; the rotating disk is installed in the installation port, a limit plate is provided on the inside of the rotating disk, and a limit ring is provided on the outside of the rotating disk. Two groups of magnetic attraction rollers are rotatably installed between each group of rotating disks, one end of the two groups of magnetic attraction rollers passes through a group of rotating disks and is provided with pulleys, the two groups of pulleys are connected by belts, the output shaft of motor II is fixedly connected to a group of magnetic attraction rollers, and motor II is installed on the rotating disk at the pulley end of the magnetic attraction roller, and the rotating disk at the pulley end of the magnetic attraction roller is fixedly connected to the gear The transmission gears are connected to the transmission gears on the upper and lower sides of the transmission gears, and the transmission gears are connected to the transmission gears on the upper and lower sides of the transmission gears on the lower and upper sides of the transmission gears on the lower and upper sides of the transmission gears on the lower and upper sides of the transmission gears.

2. The construction concrete solid waste recycling and treatment device according to claim 1, characterized in that Baffles are provided on both sides of the crushing roller of the crushing device; the top feed end of the three-stage screening device is located at the bottom of the bottom discharge end of the transportation mechanism, and the three-stage screening device is connected to the storage bin; the bottom discharge ends of the storage bin and the raw material bin are both located at the top of the feed end of the mixing mechanism.

3. The construction concrete solid waste recycling and treatment device according to claim 1 is characterized in that The transport mechanism includes an inclined plate I, an inclined plate II, an inclined plate III, a partition I, a partition II, a partition III, a partition IV, a connecting rod, a rotating shaft I, a rotating shaft II, and a motor I; the partition I is installed at the bottom of the crushing device in the processing bin, a partition II is installed at the bottom of the partition I, the partition I and the partition II are separated by a material receiving opening of the material receiving mechanism, the partition III is mirrored to the partition I, the partition III and the bottom partition IV are separated by a material receiving opening of the material receiving mechanism, the inclined plate I is installed in the processing bin, a section of the inclined plate I is fixedly connected to the partition I, the partition II and the partition III are both provided with a sliding groove I on one side, the inclined plate II and the inclined plate III are fixed by several groups of connecting rods The inclined plate II and the inclined plate III are slidably installed at the bottom of the inclined plate I in the processing bin, one end of the inclined plate II is slidably installed in the sliding groove I on one side of the partition III, and one end of the inclined plate III is slidably installed in the sliding groove I on one side of the partition II. The rotating shaft I is provided with two groups and is installed at the bottom of the inclined plate III. Two groups of driven wheels are provided on the rotating shaft I. The two groups of rotating shafts II are rotatably installed at the bottom of the rotating shaft I. Two groups of eccentric wheels are provided on the rotating shaft II. The eccentric wheels are meshed with the driven wheels. One end of the rotating shaft II passes through the processing bin and is provided with a pulley. The two groups of pulleys are connected by belts. The motor I is installed on the side wall of the processing bin, and the output end of the motor I is fixedly connected to a group of rotating shaft II.

4. The construction concrete solid waste recycling and treatment device according to claim 3 is characterized in that The blanking ends of the inclined plates I and II are both provided with a material shifting mechanism, which includes a material shifting plate I and a two-way cylinder; the two-way cylinder is installed at the bottom of the blanking ends of the inclined plates I and II, and the material shifting plate I is installed at the telescopic end of the two-way cylinder.

5. The construction concrete solid waste recycling and treatment device according to claim 1 is characterized in that Two groups of mounting openings are provided on the side wall of the processing chamber, one group of mounting openings is located between the inclined plate I and the inclined plate II, and the other group of mounting openings is located between the inclined plate II and the inclined plate III. Each group of mounting openings is arranged in a mirror image. A sliding groove II is provided on the side wall of the processing chamber, and the sliding groove II is connected to the mounting opening.

6. The construction concrete solid waste recycling and treatment device according to claim 1, characterized in that The magnetic roller is provided with a plurality of groups of material-diverting plates II.

7. The construction concrete solid waste recycling and treatment device according to claim 1, characterized in that The material receiving mechanism includes a material receiving plate, an electric push rod, a collecting plate, and a connecting plate; discharge ports are provided on both sides of the processing bin, and the positions of the discharge ports correspond to the material receiving ports separated by partitions I and II, and the material receiving ports separated by partitions III and IV, respectively. The collecting plate is installed on the side wall of the processing bin, and the collecting plate is located outside the discharge port. The material receiving end of the collecting plate is sloped, and two groups of sliding grooves III are provided at the bottom of the collecting plate. The material receiving plate and the collecting plate are slidably installed, and the material receiving plate passes through the discharge port and the material receiving port and is located at the bottom of the magnetic roller. The electric push rod is provided with two groups and is installed at the bottom of the collecting plate. The telescopic end of the electric push rod is provided with a connecting plate, and the connecting plate is slidably installed in the sliding groove III and fixedly connected to the material receiving plate.

8. The construction concrete solid waste recycling and treatment device according to claim 1, characterized in that The mixing mechanism includes a stirring frame, a water pipe I, a sleeve, a water pipe II, a water pump, a motor VI, a fixed rod, a mixing bin, a scraper, a hydraulic cylinder, an inner tube, an auger, and a motor VII; the mixing bin is installed at the bottom of the processing bin, and a discharge port I is provided at the bottom of the mixing bin. The water pipe I is rotatably installed in the mixing bin through a fixed rod in the mixing bin, a water outlet is provided at the top of the water pipe I, the bottom end of the water pipe I passes through the bottom of the mixing bin and is rotatably installed with a sleeve, the water pipe II is installed at the bottom of the processing bin, one end of the water pipe II is fixedly connected to the sleeve, the other end of the water pipe II is provided with a water inlet, and the water inlet end is installed Water pump, the motor VI is installed on the side wall of the processing bin, the pulley at the output end of the motor VI is connected to the pulley at the bottom end of the water pipe I through a belt, the stirring frame is located in the mixing bin and is fixedly connected to the water pipe I, two groups of inner cylinders are installed on the stirring frame, the bottom end of the inner cylinder is provided with a feed port II, the top end of the inner cylinder is provided with a discharge port II, an auger is installed in the inner cylinder, the motor VII is installed on the top of the stirring frame, the output shaft of the motor VII is fixedly connected to the auger, a waterproof shell is provided on the outside of the motor VII, two groups of hydraulic cylinders are provided on both sides of the stirring frame, a waterproof shell is provided on the outside of the hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to the scraper.

9. The construction concrete solid waste recycling and treatment device according to claim 1, characterized in that The treatment method and steps for recycling construction concrete solid waste are as follows: 1) Crushing: Construction concrete is transported to the feed port I on the top of the processing bin via a conveyor belt on a concrete transport rack at a speed of 1-1.5m / s. The dimensions of feed port I are 1.2m long and 0.8m wide. Concrete falls into the crushing device at a flow rate of 10-20t / h. The concrete is crushed into recycled aggregate with a particle size of 5-50mm by the crushing roller with a diameter of 1.5m and a rotation speed of 300-500r / min. 2) Transport and leveling: The power of the transport mechanism's motor I is 5.5-7kW, driving the rotating shaft II at a speed of 180-200r / min. The eccentricity of the eccentric wheel is 30-50mm, driving the inclined plates II and III to vibrate. The bidirectional cylinder drives the material stripping plate I to reciprocate, leveling the aggregate layer. 3) Magnetic impurity removal: Two sets of magnetic mechanisms work alternately, with each set working for 30-45 minutes. Motor II drives the magnetic roller at a speed of 200-350 r / min, and the material stripping plate II stirs the recycled aggregate to further expose metal impurities. Motor III has a power of 1.5kW and adjusts the angle of the magnetic roller via a sector gear. Motor IV has a power of 2kW and drives gear II to cooperate with the outer rack of the sliding frame, driving the sliding frame to move on the lifting plate at a speed of 100mm / min. Motor V has a power of 2.5kW and rotates shaft III at a speed of 150r / min, thereby driving the screw to rotate, causing the lifting plate to move along the sliding rod at a speed of 80mm / min, driving the sliding frame to rise and fall, and further fine-tune the height of the magnetic roller within an adjustment range of 100-300mm, so that the distance between the magnetic roller and the recycled aggregate is maintained at 50-150mm, improving the adsorption effect of the magnetic roller. 4) Metal collection: The electric push rod pushes the receiving plate through the discharge port to the bottom of the magnetic roller at a speed of 200mm / s. After the magnetic roller is powered off, the metal impurities fall into the receiving plate. The electric push rod shrinks at the same speed, and the receiving plate transfers the metal to the collection plate to complete the impurity collection; 5) Three-stage screening and storage: Recycled aggregate enters the three-stage screening device. The aperture of the first-stage screen is 20mm, the aperture of the second-stage screen is 10mm, and the aperture of the third-stage screen is 5mm. The aggregate is screened according to particle size. The screened aggregate is temporarily stored in different areas of the storage bin to provide graded raw materials for subsequent mixing. 6) Recycled concrete preparation: a) Raw material ratio: The recycled aggregate in the storage bin and other raw materials in the raw material bin are added to the mixing bin at a mass ratio of 6:

4. The volume of the mixing bin is 20m³; b) Add water and stir: The water pump has a flow rate of 8-10m³ / h. Water is injected through the 100mm diameter water pipe II and the rotating water pipe I. The motor VI drives the mixing frame to rotate at a speed of 60-100r / min. The auger in the inner drum is driven by the 5kW motor VII at a speed of 120r / min to accelerate the mixing of the recycled concrete. The mixing time is 20-40 minutes. c) Wall scraping and cleaning: The hydraulic cylinder pushes the scraper to remove the materials adhering to the inner wall of the mixing bin; d) Discharging: The mixed recycled concrete is discharged through the discharge port I with a diameter of 600mm at the bottom of the mixing bin, completing the recycling process.

10. The construction concrete solid waste recycling and treatment device according to claim 9, characterized in that Among them, recycled coarse aggregate with a particle size of 20-30mm accounts for 30-40% of the recycled aggregate, recycled fine aggregate with a particle size of 20-10mm accounts for 35-40% of the recycled aggregate, and recycled micropowder with a particle size of less than 5mm accounts for 25-30% of the recycled aggregate. Other raw materials include cement, natural sand, polycarboxylic acid high-efficiency water reducer, and early strength agent; among them, cement accounts for 40-50% of other raw materials, natural sand accounts for 30-40% of other raw materials, and polycarboxylic acid high-efficiency water reducer and early strength agent each account for 5-15% of other raw materials.

Images