Waste concrete recovery equipment
By setting up primary and secondary crushing components in waste concrete recycling equipment and screening after each crushing, the problem that existing equipment cannot be recycled in graded, realizing the classification and recycling of waste concrete, avoiding waste.
Patent Information
- Application Number
- CN202422064588.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Existing waste concrete recycling equipment cannot be recycled in graded manner, resulting in the waste concrete of different degrees of crushing being unable to be classified and recycled, causing waste.
A waste concrete recycling equipment is designed, including a first-level crushing assembly and a second-level crushing assembly. The waste concrete is crushed twice by the first-level crushing teeth of the first-level crushing assembly and the second-level crushing tooth of the second-level crushing assembly, and screened after each crushing to collect concrete of different particle sizes respectively.
The graded use of waste concrete is achieved, and waste is avoided and concrete of different particle sizes is most suitable for recycling.
Smart Images
Figure CN223042803U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction machinery and equipment, in particular to a waste concrete recycling device. Background Art
[0002] Concrete is mainly composed of cement, sand and gravel, which solidifies over time. In later construction, when interior decoration is required, the structure inside the building is disassembled and assembled according to the design drawings, thus forming concrete waste. Based on the concrete waste, it can be recycled and then processed into utilizable items; construction waste refers to the general term of muck, waste concrete, waste bricks and stones and other wastes generated during the production activities of the construction industry such as demolition, construction, decoration and repair. Construction waste not only occupies a large amount of land, but also causes environmental pollution; among construction waste, waste concrete accounts for a large proportion. Waste concrete can be reused after being crushed. Larger-grained waste concrete can be used as the foundation cushion for roads and buildings, and smaller-grained waste concrete can be used as the aggregate of recycled concrete after being processed.
[0003] The patent with the authorized announcement number of CN 218554206 U and the patent name of "a device for recycling and reusing waste concrete" discloses a device for recycling and reusing waste concrete. Its technical solution includes: a crushing bin, a dust suppression bin is fixedly installed at the top of the crushing bin, shower bodies are respectively fixedly installed on both sides of the inner wall of the dust suppression bin, communicating pipes are respectively communicated and installed on the opposite sides of the two shower bodies, the opposite ends of the two communicating pipes are respectively communicated and installed with a booster water pump body, the booster water pump body is fixedly installed on the back of the dust suppression bin, a liquid inlet pipe is communicated and installed at the bottom end of the booster water pump body, the upper rear end of the crushing bin is open and communicated with an exhaust pipe, the end of the exhaust pipe away from the crushing bin is communicated and installed with a dust removal fan body, and a sieve frame is fixedly installed above the exhaust pipe inside the crushing bin.
[0004] The device for recycling and reusing waste concrete in the above patent cannot perform hierarchical recycling treatment on waste concrete, which will cause waste of the recycled waste concrete and is not conducive to the classified recycling and reuse of waste concrete with different crushing degrees. Summary of the Utility Model
[0005] Aiming at the deficiencies in the prior art, the utility model provides a waste concrete recycling device, which is used to solve the technical problem that the device for recycling and reusing waste concrete in the existing patent in the background art cannot perform hierarchical recycling treatment on waste concrete, which will cause waste of the recycled waste concrete and is not conducive to the classified recycling and reuse of waste concrete with different crushing degrees.
[0006] The above technical object of the present utility model is achieved by the following technical solutions: A waste concrete recycling device, including an installation table and a crushing box. The crushing box is fixedly arranged on the installation table. Several support legs are provided at the bottom of the installation table. A control panel is provided on the installation table. A feed inlet is provided at the top of the crushing box. Inside the crushing box, a primary crushing component and a secondary crushing component are arranged in sequence from top to bottom. The primary crushing component includes first crushing teeth, and the secondary crushing component includes second crushing teeth. The density of the first crushing teeth is greater than that of the second crushing teeth.
[0007] Working principle: When technicians use this waste concrete recycling device, they control the operation of the entire device through the control panel. First, pour the waste concrete to be recycled into the crushing box from the feed inlet. The waste concrete is initially crushed by the first crushing teeth through the primary crushing component. A relatively large part of the waste concrete particles crushed by the primary crushing component is screened out, collected and used. The remaining part is screened and falls into the secondary crushing component, where the waste concrete is further crushed by the second crushing teeth. A part of the crushed waste concrete is screened out and collected for recycling. The part that passes through the screening flows out of the crushing box and is collected by the technicians for use.
[0008] Beneficial effects: The waste concrete is crushed twice by the primary crushing component and the secondary crushing component, and screening is carried out after each crushing. The waste concrete is screened and collected according to the particle size after crushing, so that the waste concrete with different particle sizes can be recycled most appropriately, realizing the classified utilization of waste concrete and avoiding waste of the recycled waste concrete.
[0009] The present utility model is further provided as: The primary crushing component includes a first rotating motor, a first rotating shaft and a first crushing roller. A first mounting plate is fixedly arranged on the outer side wall of the crushing box. The first rotating motor is fixedly arranged on the first mounting plate. The first rotating shaft is provided with two in parallel. One end of the first rotating shaft is rotatably connected to the inner side wall of the crushing box. The other end of the first rotating shaft passes through the side wall of the crushing box and is fixedly connected to the output end of the first rotating motor. A first driving gear is provided on the first rotating shaft fixedly connected to the output end of the first rotating motor. A first driven gear is provided on the other first rotating shaft. The first driving gear and the first driven gear are meshed with each other. The first crushing roller is fixedly arranged on the first rotating shaft. Several of the first crushing teeth are arranged on the first crushing roller.
[0010] By adopting the above technical solution: When technicians use the waste concrete recycling equipment, they start the first rotating motor, causing the output shaft of the first rotating motor to rotate, driving the first rotating shaft fixedly connected thereto to rotate, and then causing the first driving gear to rotate. Since the first driving gear meshes with the first driven gear, the first driven gear drives another first rotating shaft to rotate in the opposite direction, and then causes the two crushing rollers to rotate in the opposite direction, and the first crushing teeth crush the waste concrete by extrusion.
[0011] The present utility model is further arranged as follows: The secondary crushing assembly includes a second rotating motor, a second rotating shaft and a second crushing roller. A second mounting plate is fixedly provided on the outer side wall of the crushing box. The second rotating motor is fixedly provided on the second mounting plate. The second rotating shafts are arranged in two parallel. One end of the second rotating shaft is rotatably connected to the inner side wall of the crushing box. The other end of the second rotating shaft passes through the side wall of the crushing box and is fixedly connected to the output end of the second rotating motor. A second driving gear is provided on the second rotating shaft fixedly connected to the output end of the second rotating motor. A second driven gear is provided on the other second rotating shaft. The second driving gear and the second driven gear mesh with each other. The second crushing roller is fixedly provided on the second rotating shaft. A number of the second crushing teeth are provided on the second crushing roller.
[0012] By adopting the above technical solution: When the waste concrete crushed by the primary crushing assembly and passed through screening falls to the secondary crushing assembly, the technicians start the second rotating motor, causing the second rotating motor to rotate, and then driving the second rotating shaft and the second driving gear connected to its output shaft to rotate. The second driving gear drives the second driven gear meshing with it to rotate, and then drives the other second rotating shaft to rotate in the opposite direction, so that the two second crushing rollers rotate in the opposite direction, and the second crushing teeth crush the waste concrete by extrusion.
[0013] The present utility model is further arranged as follows: An inclined primary sieve plate is provided on the inner side wall of the crushing box below the first crushing roller. A number of primary sieve holes are provided on the primary sieve plate. A first discharge port is provided on the inner side wall of the crushing box at the lower end with a lower height of the primary sieve plate. A first discharge plate is provided on the outer side wall of the crushing box at the first discharge port.
[0014] By adopting the above technical solution: The waste concrete crushed by the primary crushing assembly falls onto the primary sieve plate. The waste concrete particles larger than the primary sieve holes remain above the primary sieve plate. Due to the inclined setting of the primary sieve plate and the gravity of the waste concrete itself, the waste concrete above the primary sieve plate flows out of the crushing box through the first discharge port and falls onto the first discharge plate. After the technicians collect the waste concrete on the first discharge plate for recycling, the waste concrete particles that can pass through the primary sieve holes continue to fall to the secondary crushing assembly for further crushing.
[0015] The present utility model is further configured as follows: on the inner side wall of the crushing box below the second crushing roller, a secondary sieve plate is inclinedly provided. A number of secondary sieve holes are formed in the secondary sieve plate, and the diameter of the secondary sieve holes is smaller than that of the primary sieve holes. On the inner side wall of the crushing box at the lower end with a lower height of the secondary sieve plate, a second discharge port is formed. On the outer side wall of the crushing box at the second discharge port, a second discharge plate is provided.
[0016] By adopting the above technical solution: The waste concrete crushed by the secondary crushing assembly falls onto the secondary sieve plate. The waste concrete particles larger than the secondary sieve holes remain above the secondary sieve plate. Due to the inclined setting of the secondary sieve plate and the gravity of the waste concrete itself, the waste concrete above the secondary sieve plate flows out of the crushing box through the second discharge port and falls onto the second discharge plate. After the technician collects the waste concrete on the second discharge plate for recycling, the waste concrete particles that can pass through the secondary sieve holes continue to fall, and the technician collects them and conducts subsequent recycling.
[0017] The present utility model is further configured as follows: Above the crushing box, an extrusion box is provided. The top of the extrusion box is open. Above the crushing box, a hydraulic telescopic rod is also provided. The movable end of the hydraulic telescopic rod penetrates through the side wall of the extrusion box and extends into the interior of the extrusion box. On the end of the hydraulic telescopic rod and the inner side wall of the extrusion box, extrusion plates are provided. The two extrusion plates face each other. Extrusion teeth are provided on the extrusion plates. The bottom of the extrusion box is communicated with the feed port.
[0018] By adopting the above technical solution: First, the technician puts the waste concrete to be recycled into the extrusion box, and then starts the hydraulic telescopic rod, so that the movable end of the hydraulic telescopic rod extends out, driving the extrusion plate to move, so that the extrusion teeth on the two extrusion plates perform preliminary extrusion and crushing on the waste concrete. After the extrusion and crushing, the waste concrete falls into the crushing box through the feed port for subsequent crushing and recycling.
[0019] The present utility model is further configured as follows: Above the installation table, a dust removal box is also provided. Two dust removal ports are formed in the crushing box. An air inlet pipe is communicated between the dust removal box and the dust removal ports. A suction fan is provided on the inner side wall of the dust removal box. The air inlet pipe extends into the interior of the dust removal box and is connected to the suction fan. One end of the suction fan away from the air inlet pipe is provided with an exhaust pipe.
[0020] By adopting the above technical solution: When the technician uses the waste concrete recycling equipment, the suction fan is always kept in an open state. At this time, the suction fan draws the dust generated in the crushing box into the exhaust pipe through the dust removal port and the air inlet pipe, and then discharges it into the dust removal box.
[0021] The present utility model is further configured as follows: a water storage tank is provided at the top of the dust removal box, a water pipe is provided at the bottom of the water storage tank, the water pipe penetrates through the top wall of the dust removal box and extends into the interior of the dust removal box, a spray head is provided at the end of the water pipe located inside the dust removal box, a booster pump is provided on the water pipe, and a sewage discharge port is opened at the bottom of the dust removal box.
[0022] By adopting the above technical solution: the technician turns on the booster pump, sprays the water in the water storage tank into the dust removal box through the water pipe and the spray head, mixes the dust drawn into the dust removal box with the water mist, and then the mixture falls to the bottom of the dust removal box and is discharged from the sewage discharge port.
[0023] The present utility model is further configured as follows: a baffle is obliquely provided on the inner side wall of the crushing box at the feeding port.
[0024] By adopting the above technical solution: the falling waste concrete is blocked by the baffle, so that it can fall onto the first crushing roller, avoiding the waste concrete falling into the gap and affecting the crushing effect.
[0025] The present utility model is further configured as follows: a discharge port is provided below the secondary crushing assembly, support columns are installed on the ground below the discharge port, an aggregate plate is fixedly provided on the support columns, the aggregate plate is obliquely arranged, a magnetic attraction plate is provided below the installation table, the magnetic attraction plate is obliquely arranged and has the same inclination angle as the aggregate plate, an electromagnet is embedded inside the magnetic attraction plate, and an aggregate box is placed at the lower end with a lower height of the aggregate plate.
[0026] By adopting the above technical solution: the crushed waste concrete falling from the discharge port falls onto the aggregate plate, slides into the aggregate box through the inclined aggregate plate, and at the same time the technician turns on the electromagnet, so that the magnetic attraction plate obtains magnetism and can magnetically adsorb the metal mixed in the waste concrete for separation. When the waste concrete completely falls into the aggregate box, the technician replaces the new aggregate box and turns off the electromagnet, and the magnetic attraction plate loses magnetism, so that the adsorbed metal falls onto the aggregate plate and finally slides into the new aggregate box. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic side view structure diagram of an embodiment of the present utility model;
[0028] Figure 2 It is a schematic front view structure diagram inside the crushing box of an embodiment of the present utility model.
[0029] In the above-mentioned drawings: 1. Installation platform; 2. Support leg; 3. Crushing box; 4. Extrusion box; 5. Hydraulic telescopic rod; 6. Extrusion plate; 7. Extrusion teeth; 8. Feeding port; 9. Baffle plate; 10. First mounting plate; 11. First rotating motor; 12. First rotating shaft; 13. First crushing roller; 14. First crushing teeth; 15. First driving gear; 16. First sieve plate; 17. First discharge plate; 18. Second mounting plate; 19. Second rotating motor; 20. Second rotating shaft; 21. Second crushing roller; 22. Second crushing teeth; 23. Second driving gear; 24. Second driven gear; 25. Second sieve plate; 26. Second discharge plate; 27. Discharge port; 28. Support column; 29. Aggregating plate; 30. Magnetic attracting plate; 31. Electromagnet; 32. Aggregating box; 33. Control panel; 34. Dust removal box; 35. Dust removal port; 36. Intake pipe; 37. Exhaust fan; 38. Exhaust pipe; 39. Drainage port; 40. Water storage tank; 41. Water pipe; 42. Booster water pump; 43. Spraying head. Detailed implementation manners
[0030] Embodiment:
[0031] As Figure 1 and Figure 2 shown in the figure: A waste concrete recycling device includes an installation platform 1 and a crushing box 3. The crushing box 3 is welded to the installation platform 1. A plurality of support legs 2 are welded to the bottom of the installation platform 1. A control panel 33 is installed on the installation platform 1. A feeding port 8 is opened at the top of the crushing box 3. A baffle plate 9 is obliquely welded to the inner side wall of the crushing box 3 at the feeding port 8. An extrusion box 4 is welded to the top of the crushing box 3. The top of the extrusion box 4 is open. A hydraulic telescopic rod 5 is also installed on the top of the crushing box 3. The movable end of the hydraulic telescopic rod 5 penetrates through the side wall of the extrusion box 4 and extends into the interior of the extrusion box 4. Extrusion plates 6 are welded to the end of the hydraulic telescopic rod 5 and the inner side wall of the extrusion box 4 respectively. The two extrusion plates 6 face each other. Extrusion teeth 7 are welded to the extrusion plates 6. The bottom of the extrusion box 4 is communicated with the feeding port 8.
[0032] As Figure 1 and Figure 2As shown in the figure: Inside the crushing box 3, a primary crushing component and a secondary crushing component are successively arranged from top to bottom. The primary crushing component includes a first rotating motor 11, a first rotating shaft 12, and a first crushing roller 13. A first mounting plate 10 is welded on the outer side wall of the crushing box 3. The first rotating motor 11 is installed on the first mounting plate 10. The first rotating shaft 12 is provided with two in parallel. One end of the first rotating shaft 12 is rotatably connected to the inner side wall of the crushing box 3. The other end of the first rotating shaft 12 passes through the side wall of the crushing box 3 and is welded to the output end of the first rotating motor 11. A first driving gear 15 is welded on the first rotating shaft 12 welded to the output end of the first rotating motor 11. A first driven gear is welded on the other first rotating shaft 12. The first driving gear 15 and the first driven gear mesh with each other. The first crushing roller 13 is welded on the first rotating shaft 12. A number of first crushing teeth 14 are welded on the first crushing roller 13. The secondary crushing component includes a second rotating motor 19, a second rotating shaft 20, and a second crushing roller 21. A second mounting plate 18 is welded on the outer side wall of the crushing box 3. The second rotating motor 19 is installed on the second mounting plate 18. The second rotating shaft 20 is provided with two in parallel. One end of the second rotating shaft 20 is rotatably connected to the inner side wall of the crushing box 3. The other end of the second rotating shaft 20 passes through the side wall of the crushing box 3 and is welded to the output end of the second rotating motor 19. A second driving gear 23 is welded on the second rotating shaft 20 welded to the output end of the second rotating motor 19. A second driven gear 24 is welded on the other second rotating shaft 20. The second driving gear 23 and the second driven gear 24 mesh with each other. The second crushing roller 21 is welded on the second rotating shaft 20. A number of second crushing teeth 22 are welded on the second crushing roller 21. The density of the first crushing teeth 14 is greater than that of the second crushing teeth 22.
[0033] As Figure 1 and Figure 2 shown: An inclined primary sieve plate 16 is welded on the inner side wall of the crushing box 3 below the first crushing roller 13. A number of primary sieve holes are opened on the primary sieve plate 16. A first material dropping port is opened on the inner side wall of the crushing box 3 at the lower end with a lower height of the primary sieve plate 16. A first discharge plate 17 is welded on the outer side wall of the crushing box 3 at the first material dropping port. An inclined secondary sieve plate 25 is welded on the inner side wall of the crushing box 3 below the second crushing roller 21. A number of secondary sieve holes are opened on the secondary sieve plate 25. The diameter of the secondary sieve holes is smaller than that of the primary sieve holes. A second material dropping port is opened on the inner side wall of the crushing box 3 at the lower end with a lower height of the secondary sieve plate 25. A second discharge plate 26 is welded on the outer side wall of the crushing box 3 at the second material dropping port.
[0034] As Figure 2As shown in the figure: Above the installation table 1, a dust removal box 34 is also installed. Two dust removal openings 35 are provided on the crushing box 3. An air inlet pipe 36 is connected between the dust removal box 34 and the dust removal openings 35. A suction fan 37 is provided on the inner side wall of the dust removal box 34. After the air inlet pipe 36 extends into the interior of the dust removal box 34, it is connected to the suction fan 37. One end of the suction fan 37 away from the air inlet pipe 36 is provided with an exhaust pipe 38. A water storage tank 40 is provided at the top of the dust removal box 34. A water pipe 41 is provided at the bottom of the water storage tank 40. The water pipe 41 penetrates through the top wall of the dust removal box 34 and extends into the interior of the dust removal box 34. A spray head 43 is provided at the end of the water pipe 41 located inside the dust removal box 34. A booster water pump 42 is provided on the water pipe 41. A sewage discharge port 39 is provided at the bottom of the dust removal box 34.
[0035] As Figure 1 and Figure 2 As shown in the figure: A discharge port 27 is provided below the secondary crushing assembly. Support columns 28 are installed on the ground below the discharge port 27. An aggregate plate 29 is welded on the support columns 28. The aggregate plate 29 is inclined. A magnetic attraction plate 30 is installed below the installation table 1. The magnetic attraction plate 30 is inclined and has the same inclination angle as the aggregate plate 29. An electromagnet 31 is embedded inside the magnetic attraction plate 30. An aggregate box 32 is placed at the lower end of the aggregate plate 29 with a lower height.
[0036] Working principle: When technicians use this waste concrete recycling equipment, they control the operation of the entire equipment through the control panel 33. First, the technicians put the waste concrete to be recycled into the extrusion box 4, and then start the hydraulic telescopic rod 5, so that the movable end of the hydraulic telescopic rod 5 extends, driving the extrusion plate 6 to move, so that the extrusion teeth 7 on the two extrusion plates 6 perform preliminary extrusion and crushing on the waste concrete. The waste concrete after extrusion and crushing falls into the crushing box 3 from the feed port 8. The falling waste concrete is blocked by the baffle plate 9 so that it can fall onto the first crushing roller 13. The technicians start the first rotating motor 11, so that the output shaft of the first rotating motor 11 rotates, driving the first rotating shaft 12 fixedly connected to it to rotate, and then making the first driving gear 15 rotate. Since the first driving gear 15 meshes with the first driven gear, the first driven gear drives the other first rotating shaft 12 to rotate in the reverse direction, and then makes the two crushing rollers rotate in the reverse direction. The first crushing teeth 14 perform extrusion and crushing on the waste concrete. The waste concrete crushed by the primary crushing assembly falls onto the primary sieve plate 16. The waste concrete particles larger than the primary sieve holes remain above the primary sieve plate 16. Due to the inclined setting of the primary sieve plate 16 and the gravity of the waste concrete itself, the waste concrete above the primary sieve plate 16 flows out of the crushing box 3 from the first discharge port and falls onto the first discharge plate 17. After the technicians collect the waste concrete on the first discharge plate 17, they carry out recycling. When the waste concrete crushed by the primary crushing assembly and screened falls to the secondary crushing assembly, the technicians start the second rotating motor 19, so that the second rotating motor 19 rotates, and then drives the second rotating shaft 20 and the second driving gear 23 connected to its output shaft to rotate. The second driving gear 23 drives the second driven gear 24 meshing with it to rotate, and then drives the other second rotating shaft 20 to rotate in the reverse direction, so that the two second crushing rollers 21 rotate in the reverse direction. The second crushing teeth 22 perform extrusion and crushing on the waste concrete. The waste concrete crushed by the secondary crushing assembly falls onto the secondary sieve plate 25. The waste concrete particles larger than the secondary sieve holes remain above the secondary sieve plate 25. Due to the inclined setting of the secondary sieve plate 25 and the gravity of the waste concrete itself, the waste concrete above the secondary sieve plate 25 flows out of the crushing box 3 from the second discharge port and falls onto the second discharge plate 26. After the technicians collect the waste concrete on the second discharge plate 26, they carry out recycling. The waste concrete particles that can pass through the secondary sieve holes fall from the discharge port 27 and then fall onto the aggregate plate 29, and slide into the aggregate box 32 through the inclined aggregate plate 29. At the same time, the technicians turn on the electromagnet 31, so that the magnetic adsorption plate 30 obtains magnetism and can magnetically adsorb the metal mixed in the waste concrete for separation. When the waste concrete completely falls into the aggregate box 32, the technicians replace the new aggregate box 32 and turn off the electromagnet 31. The magnetic adsorption plate 30 loses magnetism, so that the adsorbed metal falls onto the aggregate plate 29 and finally slides into the new aggregate box 32.
[0037] When technicians use this waste concrete recycling equipment, the exhaust fan 37 is always kept on. At this time, the exhaust fan 37 sucks the dust generated in the crushing box 3 into the exhaust pipe 38 through the dust removal port 35 and the intake pipe 36, and then discharges it into the dust removal box 34. The technicians turn on the booster water pump 42, and spray the water in the water storage tank 40 into the dust removal box 34 through the water pipe 41 and the spray head 43. After the dust sucked into the dust removal box 34 is mixed with the water mist, it falls to the bottom of the dust removal box 34 and is discharged from the sewage outlet 39.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. A waste concrete recycling device, comprising a mounting platform (1) and a crushing box (3), wherein the crushing box (3) is fixedly mounted on the mounting platform (1), a plurality of supporting legs (2) are arranged at the bottom of the mounting platform (1), and a control panel (33) is arranged on the mounting platform (1), characterized in that: The top of the crushing box (3) is provided with a feed port (8), and the inside of the crushing box (3) is provided with a primary crushing assembly and a secondary crushing assembly from top to bottom, the primary crushing assembly includes a first crushing tooth (14), and the secondary crushing assembly includes a second crushing tooth (22), and the density of the first crushing tooth (14) is greater than that of the second crushing tooth (22).
2. The waste concrete recycling equipment according to claim 1, characterized in that: The primary pulverizing assembly comprises a first rotating motor (11), a first rotating shaft (12) and a first pulverizing roller (13); a first mounting plate (10) is fixedly arranged on the outer wall of the pulverizing box (3); the first rotating motor (11) is fixedly arranged on the first mounting plate (10); the first rotating shaft (12) is arranged as two parallel shafts; one end of the first rotating shaft (12) is rotatably connected to the inner wall of the pulverizing box (3); the other end of the first rotating shaft (12) passes through the side wall of the pulverizing box (3) and is fixedly connected to the output end of the first rotating motor (11); a first driving gear (15) is arranged on the first rotating shaft (12) fixedly connected to the output end of the first rotating motor (11); a first driven gear (15) is arranged on the other first rotating shaft (12); the first driving gear (15) and the first driven gear are meshed with each other; the first pulverizing roller (13) is fixedly arranged on the first rotating shaft (12); and a plurality of the first pulverizing teeth (14) are arranged on the first pulverizing roller (13).
3. The waste concrete recycling equipment according to claim 1, characterized in that: The secondary crushing assembly comprises a second rotating motor (19), a second rotating shaft (20) and a second crushing roller (21). A second mounting plate (18) is fixedly arranged on the outer wall of the crushing box (3). The second rotating motor (19) is fixedly arranged on the second mounting plate (18). The second rotating shaft (20) is arranged as two parallel shafts. One end of the second rotating shaft (20) is rotatably connected to the inner wall of the crushing box (3). The other end of the second rotating shaft (20) passes through the side wall of the crushing box (3) and is fixedly connected to the output end of the second rotating motor (19). A second driving gear (23) is arranged on the second rotating shaft (20) fixedly connected to the output end of the second rotating motor (19). A second driven gear (24) is arranged on another second rotating shaft (20). The second driving gear (23) and the second driven gear (24) are meshed with each other. The second crushing roller (21) is fixedly arranged on the second rotating shaft (20). A plurality of second crushing teeth (22) are arranged on the second crushing roller (21).
4. The waste concrete recycling equipment according to claim 2, characterized in that: A primary screen plate (16) is obliquely provided on the inner wall of the crushing box (3) below the first crushing roller (13), a plurality of primary screen holes are provided on the primary screen plate (16), a first discharge port is provided on the inner wall of the crushing box (3) at the lower end of the primary screen plate (16), and a first discharge plate (17) is provided on the outer wall of the crushing box (3) exiting the first discharge port.
5. The waste concrete recycling equipment according to claim 3 is characterized in that: A secondary sieve plate (25) is obliquely provided on the inner wall of the pulverizing box (3) below the second pulverizing roller (21), and a plurality of secondary sieve holes are provided on the secondary sieve plate (25), wherein the diameter of the secondary sieve holes is smaller than that of the primary sieve holes, and a second discharge port is provided on the inner wall of the pulverizing box (3) at the lower end of the secondary sieve plate (25), and a second discharge plate (26) is provided on the outer wall of the pulverizing box (3) through the second discharge port.
6. The waste concrete recycling equipment according to claim 1, characterized in that: An extrusion box (4) is provided on the top of the crushing box (3), the top of the extrusion box (4) is open, and a hydraulic telescopic rod (5) is also provided on the top of the crushing box (3). The movable end of the hydraulic telescopic rod (5) penetrates the side wall of the extrusion box (4) and extends into the interior of the extrusion box (4). Extrusion plates (6) are provided on the end of the hydraulic telescopic rod (5) and the inner wall of the extrusion box (4), and the two extrusion plates (6) are opposite to each other. Extrusion teeth (7) are provided on the extrusion plates (6), and the bottom of the extrusion box (4) is connected to a feed port (8).
7. The waste concrete recycling equipment according to claim 1, characterized in that: A dust removal box (34) is also provided above the mounting platform (1), two dust removal ports (35) are provided on the crushing box (3), an air intake pipe (36) is connected between the dust removal box (34) and the dust removal ports (35), an exhaust fan (37) is provided on the inner wall of the dust removal box (34), the air intake pipe (36) extends into the interior of the dust removal box (34) and is connected to the exhaust fan (37), and an exhaust pipe (38) is provided at one end of the exhaust fan (37) away from the air intake pipe (36).
8. The waste concrete recycling equipment according to claim 7, characterized in that: A water storage tank (40) is provided on the top of the dust removal box (34), a water pipe (41) is provided on the bottom of the water storage tank (40), the water pipe (41) penetrates the top wall of the dust removal box (34) and extends into the interior of the dust removal box (34), a spray head (43) is provided at the end of the water pipe (41) located inside the dust removal box (34), a booster water pump (42) is provided on the water pipe (41), and a sewage outlet (39) is provided at the bottom of the dust removal box (34).
9. The waste concrete recycling equipment according to claim 1, characterized in that: A material baffle plate (9) is obliquely provided on the inner side wall of the crushing box (3) at the feed inlet (8).
10. The waste concrete recycling equipment according to claim 7, characterized in that: A discharge port (27) is provided below the secondary crushing assembly, a support column (28) is installed on the ground below the discharge port (27), a collection plate (29) is fixedly provided on the support column (28), and the collection plate (29) is tilted. A magnetic plate (30) is provided below the mounting platform (1), and the magnetic plate (30) is tilted and has the same tilt angle as the collection plate (29). An electromagnet (31) is embedded inside the magnetic plate (30), and a collection box (32) is placed at the lower end of the collection plate (29).