Recycling concrete aggregate screening and recycling crushing device

Abstract

The application discloses a regenerated concrete aggregate screening and recycling crushing device, which comprises a machine body, a feeding port is formed in the upper end of the machine body, a crushing assembly is arranged at the feeding port, a separation cylinder one and a separation cylinder two are sequentially arranged in the machine body, openings are formed in the upper ends of the separation cylinder one and the separation cylinder two, the opening of the separation cylinder one is located below the crushing assembly and is used for receiving crushed materials, a plurality of sieve holes one are formed in the lower ends of the separation cylinder one and the separation cylinder two, conveying assemblies are arranged in the separation cylinder one and the separation cylinder two, a centrifugal disc one is arranged at one end of the separation cylinder one, the machine body is provided with a motor one for driving the centrifugal disc one to work, a striking plate one is fixedly arranged in the machine body, the centrifugal disc one carries materials to collide with the striking plate one, a striking assembly for striking materials is arranged at one end of the separation cylinder two, a screening piece is arranged at one end of the separation cylinder two, and a plurality of discharge ports are arranged at the end of the machine body away from the feeding port. The application has the effect of improving the separation quality of the crushing device.

Description

Technical Field

[0001] This invention relates to the field of recycling and processing technology, and in particular to a device for screening, recycling and crushing recycled concrete aggregates. Background Technology

[0002] With the acceleration of urbanization and the continuous advancement of infrastructure construction, concrete is increasingly widely used in the construction field. However, a large amount of waste concrete is generated during the demolition process. Waste concrete still contains a large number of useful components. Through crushing and processing, waste concrete can be transformed into recycled aggregates for the production of new concrete or other building materials, thereby realizing the recycling of resources.

[0003] Related technology can be found in Chinese Patent No. CN212040702U, which discloses a concrete screening and crushing device, including a screening and crushing box. A feed funnel is welded to the top of the screening and crushing box, and a discharge funnel is welded to the bottom of the screening and crushing box. A second filter plate is connected to the bottom of the inner cavity of the screening and crushing box by screws. A first filter plate is set on the top of the second filter plate. An air pump is connected to the left side of the first filter plate by screws. A screw is set on the top of the inner cavity of the screening and crushing box. A motor is threadedly connected to the left side of the screw, and a fixed seat is threadedly connected to the right side of the screw. Orientation rods are set on both the upper and lower sides of the screw. A mounting seat is threadedly connected to the surface of the screw. Fixed rods are fixedly connected to the front and rear sides of the mounting seat. A crushing drum is rotatably connected to the inner side of the two fixed rods. This new solution can screen and crush concrete in one machine, saving manpower and improving the efficiency of screening and crushing.

[0004] Regarding the aforementioned technologies, waste concrete contains not only cement but also other impurities such as stones. Fine cement particles easily adhere to the surface of sand and gravel, and during the concrete forming process, they are tightly bound together through the hydration reaction of cement. The aforementioned crushing device cannot effectively separate cement from aggregates such as sand and gravel, resulting in a reduction in the separation quality of the crushing device. Summary of the Invention

[0005] To improve the separation quality of the crushing device, this application provides a screen, recycling, and crushing device for recycled concrete aggregates.

[0006] This application provides a screen, recycling, and crushing device for recycled concrete aggregates, which adopts the following technical solution: A recycled concrete aggregate screening, recycling, and crushing device includes a machine body with a feed inlet at the upper end. A crushing component for preliminary crushing of the material is located at the feed inlet. Separating cylinder one and separating cylinder two are arranged sequentially along the length of the machine body. Both separating cylinder one and separating cylinder two have openings at their upper ends. The opening of separating cylinder one is located below the crushing component and is used to receive the crushed material. Separating cylinder one and separating cylinder two have several sieve holes at their lower ends. Both separating cylinder one and separating cylinder two have conveying components for conveying material. A centrifugal disc is located at the end of separating cylinder one furthest from the crushing component. The machine body is equipped with a drive mechanism. The centrifugal disc has a motor that operates, and an impact plate is fixed inside the machine body. When the centrifugal disc operates, it drives the material to collide with the impact plate. The opening of the separation cylinder is located at the end near the centrifugal disc and is used to receive the material after colliding with the impact plate. The end of the separation cylinder away from the separation cylinder is provided with an impact component that impacts the material. The lower end of the machine body is provided with a collection part for collecting the impacted material. The end of the separation cylinder near the impact component is provided with a screening component for screening the material. The end of the machine body away from the feed inlet is provided with several discharge outlets that are directly opposite the screening component. The screened material flows out from the discharge outlets.

[0007] By adopting the above technical solution, the material enters the machine body through the feed inlet, and is initially crushed by the crushing component. After crushing, the material enters the first separation cylinder through the opening. The conveying component drives the material to move along the length of the first separation cylinder. During the movement, the concrete in the crushed material falls into the collection section through the screen hole 1 of the first separation cylinder. When the material is conveyed to the centrifugal disc, the motor starts and drives the centrifugal disc to rotate. The rotation of the centrifugal disc impacts the material against the impact plate, causing the cement on the surface of the material to separate from the material. The impacted material enters the second separation cylinder through the opening. The conveying component drives the material to move along the length of the second separation cylinder. During the movement, the cement in the material impacted by the impact plate falls into the collection section through the screen hole 1 of the second separation cylinder. The conveying component conveys the material to the impact component, which impacts the material again, causing secondary impact crushing. The impacted material reaches the screening component for screening. The screened material flows out from the discharge port. After multiple impacts, the cement on the material is knocked off, separating the cement from the material and improving the separation quality of the crushing device.

[0008] Optionally, the impact assembly includes a centrifugal disc two, an impact plate two, and a motor two. The motor two is fixedly installed inside the machine body. The centrifugal disc two is located at the end of the separation cylinder two away from the separation cylinder one. The output end of the motor two is fixedly connected to the centrifugal disc two. The impact plate two is fixedly installed inside the machine body, and the impact plate two and the spraying surface of the centrifugal disc two are directly opposite each other when they rotate.

[0009] By adopting the above technical solution, the second motor starts and drives the second centrifugal disc to rotate. The rotation of the second centrifugal disc drives the material to move closer to the second impact plate, so that the material collides with the second impact plate again, knocking off the cement on the surface of the material, thereby improving the separation quality of the crushing device.

[0010] Optionally, the impact plate 1 has several through holes on the side near the separation cylinder 1, the impact plate 1 has a push plate inside, the push plate 1 has several impact blocks fixed on the side near the separation cylinder 1, the impact blocks pass through the corresponding through holes, the impact plate 1 has a hydraulic cylinder fixed inside, the hydraulic cylinder is located on the side of the push plate away from the impact blocks, and the output end of the hydraulic cylinder is fixedly connected to the push plate.

[0011] By adopting the above technical solution, the impact block collides with the material, causing the cement on the surface of the material to be knocked off. When the material is blocked on the first impact plate, the hydraulic cylinder is activated to push the push plate to move. The movement of the push plate drives the impact block to move, and the impact block extends into the first impact plate, causing the blocked material to fall off, thereby improving the material handling efficiency and reducing the occurrence of blockage.

[0012] Optionally, the conveying assembly includes a third motor, a rotating rod, and helical blades. The third motor is fixed to the outside of the machine body, the rotating rod is located inside the corresponding first and second separation cylinders, and the rotating rod is coaxially fixed with the output shaft of the third motor. The helical blades are fixed to the outside of the rotating rod and are arranged circumferentially along the rotating rod.

[0013] By adopting the above technical solution, the motor starts the rotating rod, which drives the spiral blades to move circumferentially along the rotating rod. The material moves with the rotation of the spiral blades, thereby pushing the material evenly in the lateral direction and improving the stability of the crushing device.

[0014] Optionally, the crushing assembly includes two rotating drums, a motor, a gear, a gear, and several crushing rods. The motor is fixed to the outside of the machine body, and its output shaft is rotatably connected to the machine body. The two rotating drums are located on both sides of the machine body. The gears are fixed to the side of the two rotating drums near the motor. The output shaft of the motor is coaxially fixed with the gears, and the gears mesh with each other. Several crushing rods are arranged around the rotating drums and are fixedly connected to the rotating drums.

[0015] By adopting the above technical solution, the motor starts and drives gear one to rotate, gear one to rotate, gear two to rotate, and gear one and gear two to rotate the two rotating drums. The rotation of the rotating drums causes the crushing rods on the surface to crush the material, thus improving the ease of use of the crushing device.

[0016] Optionally, the screening component includes two screen plates located below the impact assembly. The screen plates have several screen holes on their surfaces, and the two screen plates are placed in parallel and inclined from top to bottom toward the discharge port.

[0017] By adopting the above technical solution, the material is impacted by the impact component and then reaches the screen plate for screening. The lower screen plate screens cement, and the upper screen plate screens small stones. The screen plate is inclined from top to bottom towards the discharge port, so that materials of different particle sizes are automatically separated and gathered towards the discharge port under the action of gravity, thereby realizing the rapid classification and discharge of materials and improving the convenience of using the crushing device.

[0018] Optionally, the collecting section includes a guide plate located at the lower end of the screening element. The guide plate has a conveying port at the end away from the screening element, and the guide plate is inclined from top to bottom towards the conveying port.

[0019] By adopting the above technical solution, the design of the guide plate allows the impacted cement to flow smoothly to the conveying port, facilitating the collection of cement for subsequent work and improving the stability of equipment operation.

[0020] Optionally, two rotating drums are provided at the conveying port. The two rotating drums are fixed with crushing teeth along the circumference. The two rotating drums cooperate to crush the collected material. A motor is provided on the outside of the machine body. A gear is fixed at one end of the rotating drum near the motor. The two gears mesh. The output shaft of the motor is coaxially fixed with any one of the gears. A collection box is provided below the rotating drum. The collection box is slidably connected to the machine body along the width direction of the machine body. The collection box collects the crushed material.

[0021] By adopting the above technical solution, the motor five starts and drives the two gears three to rotate, the two gears three to drive the corresponding rotating drum two to rotate, the rotating drum two causes the crushing teeth to crush the cement, and the crushed cement is stored in the collection box, which facilitates the subsequent reprocessing of concrete and improves the convenience of using the crushing device.

[0022] Optionally, the centrifugal disc includes a disc and connecting plates. The disc is located at the end of the separation cylinder away from the crushing component, and the disc is coaxially fixed with the output shaft of the motor. Several connecting plates are arranged around the circumference of the disc, and the connecting plates are fixedly connected to the disc.

[0023] By adopting the above technical solution, the rotation of the motor drives the disc to rotate, and the rotation of the disc causes the connecting plate to generate centrifugal force, which drives the material in the separation cylinder to be thrown outward, so that the material collides with the impact plate, thereby achieving the separation of cement and material, thus improving the stability of the crushing device.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The conveying component transports the material to the impact component, which then impacts the material again. The impacted material reaches the screening component for screening, and the screened material flows out from the discharge port. After the material passes through the impact, the cement on the material is knocked off, separating the cement from the material and improving the separation quality of the crushing device. 2. The rotation of the motor drives the disc to rotate. The rotation of the disc generates centrifugal force on the connecting plate, which throws the material in the separation cylinder outward, causing the material to collide with the impact plate, thus improving the stability of the crushing device. 3. The guide plate design allows the impacted cement to flow smoothly to the conveying port, facilitating cement collection for subsequent work and improving the stability of equipment operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a recycled concrete aggregate screening, recycling, and crushing device.

[0026] Figure 2 This is a schematic diagram designed to highlight the centrifugal disc connection structure.

[0027] Figure 3 This is a cross-sectional schematic diagram designed to highlight the connection structure of the two separator cylinders.

[0028] Figure 4 This is a cross-sectional schematic diagram designed to highlight the impact plate connection structure.

[0029] Figure 5 This is a schematic diagram designed to highlight the two-way connection structure of the rotating drum.

[0030] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Feed inlet; 12. Crushing assembly; 121. Rotary drum one; 122. Gear one; 123. Gear two; 124. Motor four; 125. Crushing rod; 13. Separating drum one; 131. Opening; 132. Screen hole one; 133. Motor one; 134. Centrifugal disc one; 1341. Disc; 1342. Connecting plate; 135. Impact plate one; 1351. Push plate; 1352. Impact block; 1353, hydraulic cylinder; 136, motor three; 137, rotating rod; 138, spiral blade; 14, separation cylinder two; 141, centrifugal disc two; 142, impact plate two; 143, motor two; 15, sieve plate; 151, sieve hole two; 16, guide plate; 161, conveying port; 17, discharge port; 18, rotating drum two; 181, motor five; 182, gear three; 183, crushing teeth; 19, collection box. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] This application discloses a device for screening, recycling, and crushing recycled concrete aggregates. Example

[0033] Reference Figure 1 and Figure 2 A recycled concrete aggregate screening, recycling, and crushing device includes a machine body 1. A feed inlet 11 is located at the upper end of the machine body 1, through which material enters the machine body 1. A crushing assembly 12 is located at the feed inlet 11. The crushing assembly 12 includes two rotating drums 121, a motor 124, a gear 122, a gear 123, and several crushing rods 125. The motor 124 is fixed to the outside of the machine body 1, and its output shaft is rotatably connected to the machine body 1. The output shaft of the motor 124 is coaxially fixed with the gear 122. When the motor 124 is started, it drives the gear 122 to rotate. Gear 122 meshes with gear 2123. The rotation of gear 122 drives the rotation of gear 2123. Two rotating drums 121 are located on both sides of the machine body 1. Gear 122 and gear 2123 are fixedly connected to the two rotating drums 121. The rotation of gear 122 and gear 2123 drives the rotation of the two rotating drums 121. Several crushing rods 125 are arranged around the circumference of the rotating drums 121 and are fixedly connected to the rotating drums 121. The rotation of the rotating drums 121 causes the crushing rods 125 on the surface of the two rotating drums 121 to cooperate in crushing the material, thereby improving the convenience of using the crushing device.

[0034] Reference Figure 2 and Figure 3 The machine body 1 contains a first separation cylinder 13 and a second separation cylinder 14 arranged sequentially along its length. Both the first separation cylinder 13 and the second separation cylinder 14 have openings 131 at their upper ends. The opening 131 of the first separation cylinder 1 is located below the crushing component 12. The crushed material enters the first separation cylinder 13 through the opening 131 of the first separation cylinder 1. Both the first separation cylinder 13 and the second separation cylinder 14 are equipped with conveying components for transporting material. The conveying components include a third motor 136, a rotating rod 137, and a spiral blade 138. The third motor 136 is fixed to the outside of the machine body 1, and the rotating rod 137 is located below the first separation cylinder 14. Inside the corresponding separation cylinders 13 and 14, the rotating rod 137 is coaxially fixed with the output shaft of the motor 136. When the motor 136 starts, it drives the rotating rod 137 to rotate. The spiral blade 138 is fixed on the outside of the rotating rod 137 and is arranged around the circumference of the rotating rod 137. The rotation of the rotating rod 137 drives the spiral blade 138 to move around the circumference of the rotating rod 137. The material moves with the rotation of the spiral blade 138, thereby pushing the material evenly in the lateral direction, which facilitates subsequent operations on the material and improves the convenience of using the crushing device.

[0035] Reference Figure 2 and Figure 3Both the first separation cylinder 13 and the second separation cylinder 14 have several sieve holes 132 at their lower ends. During the material conveying process in the first separation cylinder 13, the cement initially crushed by the crushing component 12 falls through the sieve holes 132 of the first separation cylinder 13. A centrifugal disc 134 is provided at the end of the first separation cylinder 13 away from the crushing component 12. The centrifugal disc 134 includes a disc 1341 and a connecting plate 1342. A motor 133 is fixedly installed inside the machine body 1. The disc 1341 is located at the end of the first separation cylinder 13 away from the crushing component 12, and the disc 1341 is coaxial with the output shaft of the motor 133. When the motor 133 starts, it drives the disc 1341 to rotate. Several connecting plates 1342 are arranged circumferentially along the surface of the disc 1341. The connecting plates 1342 are bent and fixedly connected to the disc 1341. The conveying component conveys the material to a separation disc. An impact plate 135 is fixedly installed inside the machine body 1. The rotation of the disc 1341 causes the connecting plate 1342 to generate centrifugal force, which drives the material in the separation cylinder 13 to be thrown outward, so that the material collides with the impact plate 135. The cement on the material is separated from the material through the impact, which improves the stability of the crushing device.

[0036] Reference Figure 2 and Figure 3 The opening 131 of the second separator cylinder 14 is located at the end of the second separator cylinder 14 near the first centrifugal disc 134. After being impacted by the first impact plate 135, the material enters the second separator cylinder 14 through the opening 131. The conveying assembly conveys the material. During the conveying process, the cement that is impacted by the first impact plate 135 falls through the first screen hole 132 of the second separator cylinder 14. The second motor 143 is fixed inside the machine body 1. The second centrifugal disc 141 is located at the end of the second separator cylinder 14 away from the first centrifugal disc 134. Centrifugal disc 2 141 is coaxially fixed with the output shaft of motor 2 143. Impact plate 2 142 is fixed inside the machine body 1. When motor 2 143 starts, it drives centrifugal disc 2 141 to rotate. The rotation of centrifugal disc 2 141 generates centrifugal force, which drives the material to move closer to impact plate 2 142, causing the material to collide with impact plate 2 142 and knocking off the cement on the surface of the material. After the material is impacted twice by impact plate 1 135 and impact plate 2 142, the probability of separation between the material and cement is increased, and the separation quality of the crushing device is improved.

[0037] Reference Figure 2The separator 14 has a screening element at one end near the centrifugal disc 141. The screening element includes two screen plates 15, each with several screen holes 151. The two screen plates 15 are located below the impact assembly and are placed parallel to each other. After being impacted by the impact plate 142, the material reaches the screen plates 15 and is screened by the screen holes 151. The lower screen plate 15 screens cement, while the upper screen plate 15 screens small stones in the material, thus removing both cement and small stones and improving the screening efficiency. The machine body 1 has several discharge ports 17 opposite the screening element at the end furthest from the feed inlet 11. The two screen plates 15 are inclined from top to bottom towards the discharge ports 17, causing materials of different particle sizes to automatically separate under gravity and gather at the discharge ports 17, thereby achieving rapid material classification and discharge and improving the ease of use of the crushing device.

[0038] Reference Figure 4 The impact plate 135 has several impact blocks 1352 on the side near the separation cylinder 13. The impact blocks 1352 collide with the material, causing the cement on the surface of the material to be knocked off. The impact plate 135 has several through holes on the side near the separation cylinder 13. A push plate 1351 is provided inside the impact plate 135. Several impact blocks 1352 are fixed on the side of the push plate 1351 near the separation cylinder 13. The impact blocks 1352 pass through the corresponding through holes. A hydraulic cylinder 1353 is fixed inside the impact plate 135. The hydraulic cylinder 1353 is located on the push plate. On the side of 1351 away from the impact block 1352, the output end of the hydraulic cylinder 1353 is fixedly connected to the push plate 1351. When the hydraulic cylinder 1353 is activated, it pushes the push plate 1351 to move along the length of the impact plate 135. The movement of the push plate 1351 along the length of the impact plate 135 causes the impact block 1352 to move, so that the impact block 1352 moves into the impact plate 135. The material blocked between the impact blocks 1352 can then flow to the opening 131 of the separator cylinder 14, thereby improving the material processing efficiency and reducing the occurrence of blockage.

[0039] Reference Figure 5A guide plate 16 is fixedly provided at the lower end of the machine body 1. A conveying port 161 is opened at the end of the guide plate 16 away from the screening element. The guide plate 16 is inclined from top to bottom towards the conveying port 161. After the cement on the material after two impacts falls from the screen hole 132 and the screen hole 151, under the guidance of the guide plate 16, the cement that has been impacted flows smoothly to the conveying port 161, which facilitates the collection of cement for subsequent work and improves the stability and convenience of equipment operation. Two rotating drums 18 are provided at the conveyor 161. The two rotating drums 18 work together to crush the collected material. A motor 181 is provided on the outside of the machine body 1. Gears 182 are fixed at the end of the rotating drums 18 near the motor 181. The two gears 182 mesh. The output shaft of the motor 181 is coaxially fixed with any one of the gears 182. When the motor 181 starts, it drives the two gears 182 to rotate. The rotation of the two gears 182 drives the corresponding rotating drums 18 to rotate. The two rotating drums 18 are fixed with crushing teeth 183 along the circumference. The crushing teeth 183 are located on the outside of the rotating drums 18. The rotation of the rotating drums 18 causes the crushing teeth 183 on the surface of the two rotating drums 18 to crush the cement, so that the cement obtained meets the requirements of concrete recycling and improves the accuracy of the crushing device.

[0040] Reference Figure 5 A collection box 19 is provided below the rotating drum 18. The collection box 19 is slidably connected to the machine body 1 along the width direction of the machine body 1. The crushed cement is stored in the collection box 19, which facilitates the subsequent reprocessing of concrete and improves the convenience of using the crushing device.

[0041] The implementation principle of the recycled concrete aggregate screening, recycling and crushing device in this application embodiment is as follows: The material enters the machine body 1 from the feed inlet 11. The crushing component 12 performs preliminary crushing on the material. The cement produced by the crushing flows through the screen hole 132 of the separation cylinder 13 to the conveying port 161. The material is conveyed to the centrifugal disc 134 by the conveying component. The centrifugal disc 134 rotates and drives the material to impact the impact plate 135. The material after impact by the impact plate 135 enters the separation cylinder 2 14. The cement from the impact by the impact plate 135 flows through the screen hole 132 of the separation cylinder 2 14 to the output port. The conveying component conveys the material to the centrifugal disc 2 141. The centrifugal disc 2 141 rotates and drives the material to impact the impact plate 2 142. The cement produced by the impact by the impact plate 2 142 flows through the screen plate 15 to the conveying port 161. The material undergoes multiple impacts, which separates the cement from the material surface, thus improving the separation quality of the crushing device.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for screening, recycling, and crushing recycled concrete aggregates, comprising a body (1), characterized in that: The upper part of the machine body (1) is provided with a feed inlet (11), and a crushing component (12) for preliminary crushing of materials is provided at the feed inlet (11). Separating cylinder one (13) and separating cylinder two (14) are arranged sequentially along the length direction inside the machine body (1). The upper part of separating cylinder one (13) and separating cylinder two (14) are both provided with an opening (131). The opening (131) of separating cylinder one (13) is located below the crushing component (12) and is used to receive the crushed material. The lower part of separating cylinder one (13) and separating cylinder two (14) are both provided with several sieve holes (132). Separating cylinder one (13) and separating cylinder two (14) are both provided with a conveying component for conveying materials. The end of separating cylinder one (13) away from the crushing component (12) is provided with a centrifugal disc (134). The machine body (1) is provided with a centrifugal disc (134) for driving centrifugal disc (134). 34) The working motor (133) has an impact plate (135) fixed inside the machine body (1). When the centrifugal disc (134) is working, it drives the material to collide with the impact plate (135). The opening (131) of the separation cylinder (14) is located at the end of the separation cylinder (14) close to the centrifugal disc (134) and is used to receive the material after colliding with the impact plate (135). The end of the separation cylinder (14) away from the separation cylinder (13) is provided with an impact component to impact the material. The lower end of the machine body (1) is provided with a collection part to collect the impacted material. The end of the separation cylinder (14) close to the impact component is provided with a screening component to screen the material. The end of the machine body (1) away from the feed inlet (11) is provided with several discharge ports (17) facing the screening component. The screened material flows out from the discharge port (17).

2. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The impact assembly includes a second centrifugal disc (141), a second impact plate (142), and a second motor (143). The second motor (143) is fixed inside the machine body (1). The second centrifugal disc (141) is located at the end of the second separation cylinder (14) away from the first separation cylinder (13). The output end of the second motor (143) is fixedly connected to the second centrifugal disc (141). The second impact plate (142) is fixed inside the machine body (1), and the second impact plate (142) and the spraying surface of the second centrifugal disc (141) are directly opposite each other when they rotate.

3. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The impact plate (135) has several through holes on the side near the separation cylinder (13). The impact plate (135) has a push plate (1351) inside. The push plate (1351) has several impact blocks (1352) fixed on the side near the separation cylinder (13). The impact blocks (1352) pass through the corresponding through holes. The impact plate (135) has a hydraulic cylinder (1353) fixed inside. The hydraulic cylinder (1353) is located on the side of the push plate (1351) away from the impact blocks (1352). The output end of the hydraulic cylinder (1353) is fixedly connected to the push plate (1351).

4. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The conveying assembly includes a third motor (136), a rotating rod (137), and a spiral blade (138). The third motor (136) is fixed on the outside of the machine body (1). The rotating rod (137) is located inside the corresponding first separation cylinder (13) and second separation cylinder (14). The rotating rod (137) is coaxially fixed with the output shaft of the third motor (136). The spiral blade (138) is fixed on the outside of the rotating rod (137) and is arranged circumferentially along the rotating rod (137).

5. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The crushing assembly (12) includes two rotating drums (121), a motor (124), a gear (122), a gear (123), and several crushing rods (125). The motor (124) is fixed on the outside of the machine body (1), and the output shaft of the motor (124) is rotatably connected to the machine body (1). The two rotating drums (121) are located on both sides of the machine body (1). The gears (122) and (123) are fixed on the side of the two rotating drums (121) near the motor (124). The output shaft of the motor (124) is coaxially fixed with the gear (122), and the gears (122) and (123) mesh. Several crushing rods (125) are arranged circumferentially along the rotating drums (121), and the crushing rods (125) are fixedly connected to the rotating drums (121).

6. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The screening component includes two screen plates (15), and a plurality of screen holes (151) are opened on the surface of the screen plates (15). The two screen plates (15) are located below the impact assembly and are placed in parallel. The two screen plates (15) are inclined from top to bottom towards the discharge port (17).

7. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The collecting section includes a guide plate (16), which is located at the lower end of the screening element. A conveying port (161) is provided at the end of the guide plate (16) away from the screening element. The guide plate (16) is inclined from top to bottom towards the conveying port (161).

8. The recycled concrete aggregate screening, recycling, and crushing device according to claim 7, characterized in that: Two rotating drums (18) are provided at the conveying port (161). The two rotating drums (18) are fixed with crushing teeth (183) along the circumference. The two rotating drums (18) work together to crush the collected material. A motor (181) is provided on the outside of the machine body (1). A gear (182) is fixed at one end of the rotating drum (18) near the motor (181). The two gears (182) mesh. The output shaft of the motor (181) is coaxially fixed with any gear (182). A collection box (19) is provided below the rotating drum (18). The collection box (19) is slidably connected to the machine body (1) along the width direction of the machine body (1). The collection box (19) collects the crushed material.

9. The recycled concrete aggregate screening, recycling, and crushing device according to claim 1, characterized in that: The centrifugal disc (134) includes a disc (1341) and a connecting plate (1342). The disc (1341) is located at the end of the separation cylinder (13) away from the crushing component (12), and the disc (1341) is coaxially fixed with the output shaft of the motor (133). Several connecting plates (1342) are arranged around the disc (1341), and the connecting plates (1342) are fixedly connected to the disc (1341).

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