Geopolymer recycled concrete production sorting device and working method thereof

Abstract

The application discloses a sorting device for geopolymer recycled concrete production and a working method thereof. The sorting device comprises a main body, a feeding cavity is formed in the upper end of the inside of the main body, a sorting chamber is formed below the feeding cavity and is communicated with the feeding cavity, a PLC controller is mounted on one side of the front end of the main body, rotating doors are movably mounted on the two sides and the front and back ends of the main body, a rotating shaft is rotatably arranged in the inside of the feeding cavity, spiral conveying blades are welded to the outer wall of the rotating shaft, a threaded transmission rod is rotatably arranged on one side of the upper end of the inside of the sorting chamber, and a moving block is threadedly connected to the outer part of the threaded transmission rod. The sorting device can avoid the influence of metal impurities on subsequent sorting, improve the sorting effect, make the metal impurities enter the inside of a second collecting frame, facilitate a user to collect and take out the metal impurities, and can inhale generated dust to avoid the diffusion of the dust, thus being good in practicability.

Description

Technical Field

[0001] This invention relates to the field of geopolymer recycled concrete production technology, specifically to a sorting device and its working method for geopolymer recycled concrete production. Background Technology

[0002] Geopolymer recycled concrete refers to concrete made by replacing ordinary Portland cement with geopolymers formed from industrial solid wastes such as fly ash and slag through alkali activation, and replacing natural coarse aggregates with recycled coarse aggregates made from crushed waste concrete. Geopolymer recycled concrete has advantages such as excellent waterproofing. However, the production of geopolymer recycled concrete requires crushing, washing, and grading of waste concrete blocks, and then mixing them with graded aggregates in a certain proportion. Usually, sorting devices are needed to separate the crushed materials.

[0003] For example, the Chinese authorized patent CN217616045U, "Recycled Concrete Crusher Sorting Device," includes a left support platform and a right support platform. The top of the left and right support platforms is fixedly equipped with the same drive platform. The top of the drive platform is fixedly equipped with a feeding platform. The drive platform contains multiple drive rods. The bottom of the drive platform is fixedly equipped with a support plate. The top of the support plate is equipped with a discharge pipe. The top of the discharge pipe is equipped with an installation structure. Two support rods are movably installed in the installation structure. The top of the two vertical support rods is fixedly equipped with the same identification plate. The top of the identification plate is equipped with a protective structure. Both support rods are equipped with positioning holes.

[0004] While the existing technology can sort crushed waste concrete, the waste concrete in recycled concrete may contain certain pollutants, such as metals. If the metals are not treated during sorting, it can easily affect the sorting of coarse and fine aggregates, thus affecting the sorting effect. Furthermore, the sorting of recycled concrete by this device can easily generate a lot of dust, polluting the working environment. Therefore, it does not meet the current requirements. In response, we propose a sorting device and its working method for the production of geopolymer recycled concrete. Summary of the Invention

[0005] The purpose of this invention is to provide a sorting device and its working method for the production of geopolymer recycled concrete, so as to solve the problems mentioned in the background art of sorting devices lacking metal processing and easily generating dust that affects the working environment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sorting device for the production of geopolymer recycled concrete and its working method, comprising a main body, wherein a feeding chamber is provided at the upper end of the main body, a sorting chamber is provided below the feeding chamber and the sorting chamber is connected to the feeding chamber, a PLC controller is installed on one side of the front end of the main body, and rotating doors are movably installed on both sides and the front and rear ends of the main body;

[0007] It also includes a rotating shaft that rotates inside the feed chamber, and spiral conveying blades are welded to the outer wall of the rotating shaft;

[0008] It also includes a threaded drive rod, which is rotatably disposed on one side of the upper end of the sorting chamber. The threaded drive rod is externally threaded with a moving block. A U-shaped connecting block is welded to one side of each moving block. A connecting plate is provided inside each U-shaped connecting block, and both ends of the connecting plate extend to the outside of the U-shaped connecting block. A rectangular electromagnet is installed on one side of each connecting plate.

[0009] It also includes an annular suction groove, which is opened on one side of the upper end of the feeding chamber. An annular filter screen is provided on one side of the inner side of the annular suction groove. A dust collection fan is provided on one side of the annular suction groove. A dust settling box is provided on one side of the upper end of the main body. The dust collection fan is connected to the annular suction groove and the dust settling box through an air inlet pipe.

[0010] Preferably, a water tank is provided on one side of the dust settling box, and the dust settling box and the water tank are connected by a water inlet pipe. The water tank is provided with three equidistant activated carbon adsorption layers. A water spray plate is provided at the upper end of the dust settling box, and a pump is provided at the upper end of the dust settling box. The pump is connected to the water spray plate and the water tank by a water outlet pipe.

[0011] Preferably, each of the U-shaped connecting blocks has three equidistant guide rods welded inside, and each guide rod passes through the connecting plate and is movably engaged with the connecting plate. Each guide rod is fitted with a return spring, one end of which is connected to the connecting plate and the other end of which is connected to the U-shaped connecting block.

[0012] Preferably, each of the U-shaped connecting blocks has a pressure sensor installed at its lower end, and the output end of each pressure sensor is electrically connected to the input end of the PLC controller.

[0013] Preferably, a limiting rod is welded to one side of the threaded transmission rod, the limiting rod passes through the moving block, and the moving block slides in cooperation with the limiting rod.

[0014] Preferably, the sorting chamber is equipped with a screening plate, a vibration motor is installed on one side of the lower end of the screening plate, and the input end of the vibration motor is electrically connected to the output end of the PLC controller. A conveyor belt is installed below the screening plate, and a first collection frame is provided on one side below the conveyor belt.

[0015] Preferably, a first servo motor is provided on one side of the feeding chamber, the output end of the first servo motor is connected to the rotating shaft through a coupling, and the input end of the first servo motor is electrically connected to the output end of the PLC controller.

[0016] Preferably, a second servo motor is provided behind the threaded transmission rod, the output end of the second servo motor is connected to the threaded transmission rod through a coupling, and the input end of the second servo motor is electrically connected to the output end of the PLC controller.

[0017] Preferably, a second collection frame is provided on both the front and rear sides of the lower end of the sorting chamber.

[0018] The working method of the sorting device for the production of geopolymer recycled concrete includes the following steps:

[0019] Step 1: The crushed material from the geopolymer recycled concrete is fed into the feeding chamber. The first servo motor is started, and the shaft is rotated under the drive of the coupling. The shaft drives the screw conveyor blades to rotate, and the rotating screw conveyor blades convey the material into the sorting chamber.

[0020] Step 2: The rectangular electromagnet is energized by the PLC controller. After the material enters the sorting chamber, it will fall above the rectangular electromagnet under the action of gravity. Metal impurities in the material will be attracted to the rectangular electromagnet, and the remaining non-metallic material will slide into the upper end of the screening plate through the rectangular electromagnet.

[0021] Step 3: When the rectangular electromagnet attracts a sufficient amount of metal impurities, it will cause the connecting plate to move downwards. The downward movement of the connecting plate will squeeze the pressure sensor, which will send an electrical signal to the PLC controller for processing. After processing, the PLC controller will start the second servo motor, which will cause the two moving blocks to rotate synchronously under the transmission of the coupling. The moving blocks will move linearly under the axial limit of the limit rod, causing the rectangular electromagnet that attracts impurities to move to the top of the second collection frame. The other rectangular electromagnet will move to the top of the screening plate for continuous metal attraction. After the rectangular electromagnet moves to the top of the second collection frame, it will be turned off under the control of the PLC controller, releasing the attraction of metal impurities. The metal impurities will fall into the interior of the second collection frame along the rectangular electromagnet. When in use, open the rotating door at the front and rear of the main body to remove the metal impurities.

[0022] Step 4: Non-metallic materials will be screened after falling onto the screening plate. Fine aggregates will fall onto the top of the conveyor belt through the screening plate and move to the inside of the first collection box via the conveyor belt. The user can then remove the fine aggregates by opening the rotating door on one side.

[0023] Step 5: Coarse aggregate will not pass through the screening plate. Start the vibration motor to make the screening plate vibrate. The coarse aggregate will slide into the lower end of the screening plate during vibration. The user can take out the coarse aggregate by opening the rotating door on the other side.

[0024] Step Six: When sorting materials, start the dust extraction fan. The dust extraction fan generates suction through the air inlet pipe to the annular suction groove, drawing dust into the dust settling box. The annular filter screen prevents materials from being sucked in. After the dust enters the dust settling box, start the pump. With the water outlet pipe connected, water in the water tank is delivered to the spray plate and sprayed out. The sprayed water mist will adsorb the dust that has entered, generating wastewater which enters the water tank through the water inlet pipe. Under the pump's suction, the wastewater will pass through three activated carbon adsorption layers in sequence, so that the wastewater is filtered and purified for reuse.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention provides a rectangular electromagnet on one side above the screening plate. When the crushed concrete material enters the sorting chamber, the material falls onto the rectangular electromagnet first. The metal impurities contained in the material are attracted by the rectangular electromagnet, thereby preventing the metal impurities from affecting the subsequent sorting and improving the sorting effect.

[0027] 2. This invention incorporates a pressure sensor inside the U-shaped connecting block. When a rectangular electromagnet attracts sufficient metal impurities, it moves the connecting plate downwards, squeezing the pressure sensor. The pressure sensor then sends an electrical signal to the PLC controller for processing. The PLC controller then activates a second servo motor, which moves another rectangular electromagnet above the screening plate, achieving continuous metal impurity removal. The rectangular electromagnet that attracted the metal impurities moves above the second collection frame. By turning off the rectangular electromagnet, the attraction is released, allowing the metal impurities to enter the second collection frame for easy collection and removal by the user.

[0028] 3. This invention features a rotating shaft inside the feeding chamber. When the shaft rotates, it drives the spiral conveyor blades to rotate synchronously. The rotation of the spiral conveyor blades enables the material to be transported and enters the sorting chamber at a certain rate. This avoids material accumulation during feeding and prevents insufficient sorting caused by excessive material in the sorting chamber, making it easy to use.

[0029] 4. This invention features an annular suction groove on one side of the upper end of the feeding chamber. During routine sorting, dust can be prevented from escaping by operating inside the main body. Furthermore, by activating the dust extraction fan, the annular suction groove can draw dust from the feeding port, further preventing dust from escaping. This invention is highly practical.

[0030] 5. This invention features a water tank and a dust collection box on one side of the upper part of the main body. After dust is absorbed, the pump is activated to discharge water mist from the spray plate, which can then adsorb the dust entering the dust collection box, thus achieving the effect of dust suppression. At the same time, the activated carbon adsorption layer inside the water tank can filter and purify the wastewater that has adsorbed the dust, thereby enabling water to be recycled, saving water resources, and reducing operating costs. Attached Figure Description

[0031] Figure 1 This is a front view of the overall structure of the present invention;

[0032] Figure 2 This is a front view of the internal structure of the present invention;

[0033] Figure 3 This is a top view of the internal structure of the present invention;

[0034] Figure 4 This is a side view of the internal structure of the present invention;

[0035] Figure 5 For the present invention Figure 2 Enlarged view of a portion of region A in the middle;

[0036] Figure 6 For the present invention Figure 2 Enlarged view of a portion of region B in the middle;

[0037] Figure 7 For the present invention Figure 2 Enlarged view of a portion of region C.

[0038] In the diagram: 1. Main body; 2. Feeding chamber; 3. First servo motor; 4. Rotating shaft; 5. Spiral conveyor blades; 6. Sorting chamber; 7. Screening plate; 8. Vibrating motor; 9. Conveyor belt; 10. First collection frame; 11. Rectangular electromagnet; 12. Connecting plate; 13. U-shaped connecting block; 14. Guide rod; 15. Return spring; 16. Pressure sensor; 17. Moving block; 18. Threaded transmission rod; 19. Limiting rod; 20. Second servo motor; 21. Second collection frame; 22. Annular suction groove; 23. Annular filter screen; 24. Dust extraction fan; 25. Air inlet pipe; 26. Dust settling box; 27. Water spray tray; 28. Water outlet pipe; 29. ​​Pump; 30. Water inlet pipe; 31. Water tank; 32. Activated carbon adsorption layer; 33. Rotating door; 34. PLC controller. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] Please see Figure 1-7 An embodiment of the present invention provides a sorting device for the production of geopolymer recycled concrete and its working method, comprising a main body 1, a feeding chamber 2 is provided at the upper end of the main body 1, a sorting chamber 6 is provided below the feeding chamber 2 and the sorting chamber 6 is connected to the feeding chamber 2, a PLC controller 34 is installed on one side of the front end of the main body 1, and rotating doors 33 are movably installed on both sides and the front and rear ends of the main body 1.

[0041] It also includes a rotating shaft 4, which rotates inside the feed chamber 2, and spiral conveying blades 5 are welded to the outer wall of the rotating shaft 4;

[0042] It also includes a threaded drive rod 18, which is rotatably mounted on one side of the upper end inside the sorting chamber 6. The threaded drive rod 18 is externally threaded with a moving block 17. A U-shaped connecting block 13 is welded to one side of each moving block 17. A connecting plate 12 is provided inside each U-shaped connecting block 13, and both ends of the connecting plate 12 extend to the outside of the U-shaped connecting block 13. A rectangular electromagnet 11 is installed on one side of each connecting plate 12.

[0043] It also includes an annular suction groove 22, which is opened on one side of the upper end of the feeding chamber 2. An annular filter screen 23 is provided on one side of the inner side of the annular suction groove 22. A dust collection fan 24 is provided on one side of the annular suction groove 22. A dust settling box 26 is provided on one side of the upper end of the main body 1. The dust collection fan 24 is connected to the annular suction groove 22 and the dust settling box 26 through an air inlet pipe 25.

[0044] In use, the rectangular electromagnet 11 can adsorb metal impurities in the material by activating it, thus avoiding affecting subsequent sorting. After activating the second servo motor 20, the two moving blocks 17 can drive the two rectangular electromagnets 11 to move synchronously, so that the rectangular electromagnet 11 adsorbing metal impurities moves to the upper end of the second collection frame, thereby allowing the other rectangular electromagnet 11 to move above the screening plate 7, achieving continuous and uninterrupted adsorption of metal impurities, which is highly practical.

[0045] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7A water tank 31 is provided on one side of the dust settling box 26. The dust settling box 26 and the water tank 31 are connected by a water inlet pipe 30. The water tank 31 is provided with three equidistant activated carbon adsorption layers 32. A water spray plate 27 is provided at the upper end of the dust settling box 26. A pump 29 is provided at the upper end of the dust settling box 26. The pump 29 is connected to the water spray plate 27 and the water tank 31 by a water outlet pipe 28. The activated carbon adsorption layer 32 can filter and purify sewage, realize the multiple use of water resources, and save water resources.

[0046] Please see Figure 3 and Figure 6 The U-shaped connecting block 13 has three equally spaced guide rods 14 welded inside, and each guide rod 14 passes through the connecting plate 12 and is movably engaged with the connecting plate 12. Each guide rod 14 is fitted with a return spring 15, one end of which is connected to the connecting plate 12 and the other end of which is connected to the U-shaped connecting block 13. The return spring 15 makes it easy for the rectangular electromagnet 11 to rebound.

[0047] Please see Figure 6 Pressure sensors 16 are installed at the lower end of each U-shaped connecting block 13, and the output end of each pressure sensor 16 is electrically connected to the input end of the PLC controller 34. The setting of pressure sensors 16 allows the rectangular electromagnets 11 to be replaced in time, facilitating the alternating adsorption of metal impurities.

[0048] Please see 2 and Figure 3 A limit rod 19 is welded to one side of the threaded transmission rod 18. The limit rod 19 passes through the moving block 17, and the moving block 17 slides with the limit rod 19. The limit rod 19 can limit the moving block 17 axially, so that the rotation of the moving block 17 is converted into horizontal linear movement.

[0049] Please see Figure 2 , Figure 3 and Figure 4 The sorting chamber 6 is equipped with a screening plate 7. A vibration motor 8 is installed on one side of the lower end of the screening plate 7, and the input end of the vibration motor 8 is electrically connected to the output end of the PLC controller 34. A conveyor belt 9 is installed below the screening plate 7, and a first collection frame 10 is set on one side below the conveyor belt 9. The first collection frame 10 can collect fine aggregates, while the vibration motor 8 can prevent the screening plate 7 from being blocked.

[0050] Please see Figure 2 A first servo motor 3 is provided on one side of the feeding chamber 2. The output end of the first servo motor 3 is connected to the rotating shaft 4 through a coupling, and the input end of the first servo motor 3 is electrically connected to the output end of the PLC controller 34. The first servo motor 3 provides power for the screw conveying of materials.

[0051] Please see Figure 3 A second servo motor 20 is provided behind the threaded transmission rod 18. The output end of the second servo motor 20 is connected to the threaded transmission rod 18 through a coupling, and the input end of the second servo motor 20 is electrically connected to the output end of the PLC controller 34. The second servo motor 20 provides power for the movement of the rectangular electromagnet 11.

[0052] Please see Figure 3 and Figure 4 The front and rear sides of the lower end of the sorting chamber 6 are equipped with second collection frames 21. The second collection frames 21 are used to collect metal impurities, which can be collected separately from the materials and are convenient to use.

[0053] The working method of the sorting device for the production of geopolymer recycled concrete includes the following steps:

[0054] Step 1: The crushed material of the geopolymer recycled concrete is fed into the feeding chamber 2. The first servo motor 3 is started, and the shaft 4 is rotated under the drive of the coupling. The shaft 4 drives the screw conveyor blades 5 to rotate. The rotating screw conveyor blades 5 convey the material into the sorting chamber 6.

[0055] Step 2: The rectangular electromagnet 11 is energized by the PLC controller 34. After the material enters the sorting chamber 6, it will fall above the rectangular electromagnet 11 under the action of gravity. Metal impurities in the material will be adsorbed on the rectangular electromagnet 11, and the remaining non-metallic material will slide into the upper end of the screening plate 7 through the rectangular electromagnet 11.

[0056] Step 3: When the rectangular electromagnet 11 adsorbs a sufficient amount of metal impurities, it will cause the connecting plate 12 to move downward. The downward movement of the connecting plate 12 will squeeze the pressure sensor 16. The pressure sensor 16 will send an electrical signal to the PLC controller 34 for processing. After processing, the PLC controller 34 will start the second servo motor 20. Under the transmission of the coupling, the two moving blocks 17 will rotate synchronously. The moving blocks 17 will move linearly under the axial limit of the limit rod 19, which will move the rectangular electromagnet 11 that adsorbs impurities to the top of the second collection frame 21. The other rectangular electromagnet 11 will move to the top of the screening plate 7 for continuous metal adsorption. After the rectangular electromagnet 11 moves to the top of the second collection frame 21, it will be turned off under the control of the PLC controller 34, releasing the adsorption of metal impurities. The metal impurities will fall into the interior of the second collection frame 21 along the rectangular electromagnet 11. When in use, open the rotating door 33 at the front and rear ends of the main body 1 to remove the metal impurities.

[0057] Step 4: Non-metallic materials will be screened by the screening plate 7 after falling onto the screening plate 7. Fine aggregates will fall onto the upper end of the conveyor belt 9 through the screening plate 7 and move to the inside of the first collection box 10 via the conveyor belt 9. The user can take out the fine aggregates by opening the rotating door 33 on one side.

[0058] Step 5: Coarse aggregate will not pass through the screening plate 7. Start the vibration motor 8 to make the screening plate 7 vibrate. The coarse aggregate slides into the lower end of the screening plate 7 during vibration. The user can take out the coarse aggregate by opening the rotating door 33 on the other side.

[0059] Step Six: When sorting materials, start the dust extraction fan 24. The dust extraction fan 24 generates suction through the air inlet pipe 25 to the annular suction groove 22, drawing dust into the dust settling box 26. The annular filter screen 23 prevents materials from being sucked in. After the dust enters the dust settling box 26, start the pump 29. With the connection of the water outlet pipe 28, the water in the water tank 31 is transported to the water spray plate 27 and sprayed out. The sprayed water mist will adsorb the dust that has entered, generating wastewater that enters the water tank 31 through the water inlet pipe 30. Under the pumping of the pump 29, the wastewater will pass through three activated carbon adsorption layers 32 in sequence, so that the wastewater is filtered and purified for reuse.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sorting device for producing recycled geopolymer concrete, comprising a main body (1), wherein a feeding chamber (2) is provided at the upper end of the main body (1), and a sorting chamber (6) is provided below the feeding chamber (2), and the sorting chamber (6) is connected to the feeding chamber (2), a PLC controller (34) is installed on one side of the front end of the main body (1), and rotating doors (33) are movably installed on both sides and the front and rear ends of the main body (1), characterized in that: It also includes a rotating shaft (4) that rotates inside the feed chamber (2), and the outer wall of the rotating shaft (4) is welded with spiral conveying blades (5); It also includes a threaded drive rod (18), which is rotatably disposed on one side of the upper end inside the sorting chamber (6). The threaded drive rod (18) is externally threaded with a moving block (17). A U-shaped connecting block (13) is welded to one side of each moving block (17). A connecting plate (12) is provided inside each U-shaped connecting block (13), and both ends of the connecting plate (12) extend to the outside of the U-shaped connecting block (13). A rectangular electromagnet (11) is installed on one side of each connecting plate (12). It also includes an annular suction groove (22), which is opened on one side of the upper end of the feeding chamber (2). An annular filter screen (23) is provided on one side of the interior of the annular suction groove (22). A dust collector (24) is provided on one side of the annular suction groove (22). A dust settling box (26) is provided on one side of the upper end of the main body (1). The dust collector (24) is connected to the annular suction groove (22) and the dust settling box (26) through an air inlet pipe (25). The U-shaped connecting block (13) has three equally spaced guide rods (14) welded inside, and each guide rod (14) passes through the connecting plate (12) and is movably engaged with the connecting plate (12). Each guide rod (14) is fitted with a return spring (15), one end of which is connected to the connecting plate (12), and the other end of which is connected to the U-shaped connecting block (13). A pressure sensor (16) is installed at the lower end of each U-shaped connecting block (13), and the output of each pressure sensor (16) is connected to the PLC control unit. The input end of the device (34) is electrically connected. A limit rod (19) is welded to one side of the threaded transmission rod (18). The limit rod (19) passes through the moving block (17), and the moving block (17) slides with the limit rod (19). A screening plate (7) is provided inside the sorting chamber (6). A vibration motor (8) is installed on one side of the lower end of the screening plate (7), and the input end of the vibration motor (8) is electrically connected to the output end of the PLC controller (34). A conveyor belt (9) is installed below the screening plate (7), and a first collection frame (10) is provided on one side below the conveyor belt (9).

2. The sorting device for producing geopolymer recycled concrete according to claim 1, characterized in that: A water tank (31) is provided on one side of the dust settling box (26). The dust settling box (26) and the water tank (31) are connected by a water inlet pipe (30). The water tank (31) is provided with three equidistant activated carbon adsorption layers (32). A water spray plate (27) is provided at the upper end of the dust settling box (26). A pump (29) is provided at the upper end of the dust settling box (26). The pump (29) is connected to the water spray plate (27) and the water tank (31) by a water outlet pipe (28).

3. The sorting device for producing recycled geopolymer concrete according to claim 1, characterized in that: A first servo motor (3) is provided on one side of the feeding chamber (2). The output end of the first servo motor (3) is connected to the rotating shaft (4) through a coupling, and the input end of the first servo motor (3) is electrically connected to the output end of the PLC controller (34).

4. A sorting device for producing recycled geopolymer concrete according to claim 1, characterized in that: A second servo motor (20) is provided behind the threaded transmission rod (18). The output end of the second servo motor (20) is connected to the threaded transmission rod (18) through a coupling, and the input end of the second servo motor (20) is electrically connected to the output end of the PLC controller (34).

5. A sorting device for producing recycled geopolymer concrete according to claim 1, characterized in that: The sorting chamber (6) is equipped with a second collection frame (21) on both the front and rear sides of the lower end of the interior.

6. The working method of the sorting device for producing geopolymer recycled concrete according to any one of claims 1-5, characterized in that: Includes the following steps: Step 1: The crushed material of the geopolymer recycled concrete is fed into the feeding chamber (2), the first servo motor (3) is started, and the shaft (4) is rotated under the drive of the coupling. The shaft (4) drives the spiral conveyor blades (5) to rotate. The spiral conveyor blades (5) rotate to convey the material into the sorting chamber (6). Step 2: The rectangular electromagnet (11) is energized by the PLC controller (34). After the material enters the sorting chamber (6), it will fall above the rectangular electromagnet (11) under the action of gravity. Metal impurities in the material will be adsorbed on the rectangular electromagnet (11), and the remaining non-metallic material will slide into the upper end of the screening plate (7) through the rectangular electromagnet (11). Step 3: When the rectangular electromagnet (11) adsorbs a sufficient amount of metal impurities, it will cause the connecting plate (12) to move downwards. The downward movement of the connecting plate (12) will squeeze the pressure sensor (16). The pressure sensor (16) will send an electrical signal to the PLC controller (34) for processing. After processing, the PLC controller (34) will start the second servo motor (20), which will cause the two moving blocks (17) to move synchronously under the transmission of the coupling. The moving blocks (17) will move linearly under the axial limit of the limit rod (19), driving the adsorbed impurities... The rectangular electromagnet (11) moves to the top of the second collection box (21), and another rectangular electromagnet (11) moves to the top of the screening plate (7) to continuously attract metal. After the rectangular electromagnet (11) moves to the top of the second collection box (21), it is turned off under the control of the PLC controller (34) to release the attraction of metal impurities. The metal impurities fall into the interior of the second collection box (21) along the rectangular electromagnet (11). When in use, open the rotating door (33) at the front and rear ends of the main body (1) to take out the metal impurities. Step 4: Non-metallic materials fall onto the screening plate (7) and are screened by the screening plate (7). Fine aggregates fall onto the upper end of the conveyor belt (9) through the screening plate (7) and are moved to the inside of the first collection box (10) by the conveyor belt (9). The user takes out the fine aggregates by opening the rotating door (33) on one side. Step 5: Coarse aggregate will not pass through the screening plate (7). Start the vibration motor (8) to make the screening plate (7) vibrate. The coarse aggregate slides into the lower end of the screening plate (7) during vibration. The user can take out the coarse aggregate by opening the rotating door (33) on the other side. Step 6: When sorting materials, start the dust extraction fan (24). The dust extraction fan (24) generates suction in the annular suction groove (22) through the air inlet pipe (25), sucking the dust into the dust settling box (26). The annular filter screen (23) prevents the material from being sucked in. After the dust enters the dust settling box (26), start the pump (29). With the connection of the water outlet pipe (28), the water in the water tank (31) is transported to the water spray plate (27) and sprayed out through the water spray plate (27). The sprayed water mist will adsorb the dust that enters and generate sewage. It enters the water tank (31) through the water inlet pipe (30). Under the pump (29), the sewage will pass through three activated carbon adsorption layers (32) in sequence, so that the sewage is filtered and purified and reused.

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