A processing device for preparing high-performance concrete by using construction solid waste
By designing a transmission assembly with a grid plate and a counterweight plate, the problem of solid waste adhering to the crushing chamber after compression and crushing was solved, enabling convenient solid waste removal and efficient operation of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-02
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, construction solid waste that has been crushed and compressed is easily compressed into blocks under pressure and adheres to the inside of the crushing chamber, making it inconvenient to remove and impractical.
The design employs a grid plate and counterweight plate, and through the cooperation of vertical rods, spring rods, and slots, the grid plate is driven to move vertically to prevent solid waste from adhering. The transmission assembly of traction rope and guide wheel enables automated operation, ensuring that solid waste is removed smoothly.
It effectively prevents solid waste from adhering inside the crushing chamber, simplifies the operation process, improves the practicality and automation of the device, and ensures that the crushed solid waste can be easily removed from the crushing chamber.
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Figure CN117245783B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of construction engineering technology, and in particular to a treatment device for preparing high-performance concrete using construction solid waste. Background Technology
[0002] With the acceleration of industrialization and urbanization, the construction industry has also developed rapidly, resulting in an increasing amount of construction solid waste. Construction solid waste refers to the general term for slag, waste concrete, waste bricks and stones and other waste generated by people in the production activities of the construction industry, such as demolition, construction, decoration and repair. If it is not treated and utilized in time, it will inevitably have an adverse impact on society, environment and resources.
[0003] Chinese patent publication number CN114210437A discloses a method and equipment for preparing environmentally friendly concrete using construction solid waste; including a base, column, beam, extrusion box, extrusion assembly, feed hopper, crushing box, support, crushing assembly, pipe and collection box, which classifies the construction solid waste and places the construction waste inside the extrusion box, etc.
[0004] In the aforementioned articles, the construction waste inside the extrusion box is crushed by an extrusion assembly. However, under the action of the extrusion assembly, the crushed solid waste may be squeezed into blocks under pressure and adhere to the inside of the extrusion box, making it inconvenient to remove from the box. This makes the operation very inconvenient and impractical. Summary of the Invention
[0005] The purpose of this invention is to address the following shortcomings in the prior art: the solid waste after crushing may be compressed into blocks under pressure and adhere to the inside of the crushing box, making it inconvenient to remove from the crushing box, which is very inconvenient to operate and not very practical. Therefore, this invention proposes a treatment device for preparing high-performance concrete using construction solid waste.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A processing device for preparing high-performance concrete using construction solid waste includes a base, an extrusion box fixedly installed on the surface of the base, a support frame fixedly installed above the base, an extrusion cylinder fixedly installed on the support frame, and an extrusion plate fixedly installed at the output end of the extrusion cylinder.
[0008] A grid plate is vertically slidably installed inside the extrusion box. Vertical rods are symmetrically fixedly installed on the surface of the grid plate. Each of the two vertical rods has an installation groove. A trapezoidal block is installed in the installation groove through a first spring rod. The extrusion plate has slots on both sides, and the trapezoidal block is located directly below the slot. A rectangular groove is opened on the lower surface of the extrusion plate. A counterweight plate is inserted into the rectangular groove. A sliding hole communicating with the rectangular groove is opened on the inner wall of the slot. A rectangular rod is slidably installed in the sliding hole. An installation block is fixedly installed on the lower surface of the rectangular rod. A moving hole is opened on the surface of the installation block. A moving rod is slidably installed in the moving hole. A second spring rod is fixedly installed at one end of the moving rod through a fixed block. The other end of the second spring rod is fixedly connected to the installation block. A limiting block with a trapezoidal longitudinal section is fixedly installed at one end of the moving rod. U-shaped positioning blocks are symmetrically fixedly installed on the upper surface of the counterweight plate. The positioning blocks are sleeved on the limiting blocks.
[0009] The support frame has symmetrical vertical lifting slots, and lifting blocks are slidably installed in the two lifting slots. Traction ropes are fixedly installed on the two lifting blocks. First guide wheels are symmetrically rotatably installed on the upper surface of the extrusion plate, and second guide wheels are rotatably installed on both sides of the extrusion plate. Through holes communicating with rectangular slots are symmetrically opened on the upper surface of the extrusion plate. The traction ropes are wound around the first and second guide wheels and pass through the through holes, with one end fixedly installed on the counterweight plate. A transmission component is provided in the rectangular slot to drive the moving rod to move towards the slot.
[0010] As a preferred embodiment, the transmission assembly includes a movable block horizontally slidably mounted on the inner wall of a rectangular groove, a support rod rotatably mounted on the movable block via a first torsion spring, a stop block rotatably mounted on one end of the support rod, and an L-shaped top rod fixedly mounted on the movable block. The top rod and the movable rod are on the same horizontal line. The stop block is in contact with the traction rope. A third spring rod is fixedly mounted on one end of the movable block, and the other end of the third spring rod is fixedly connected to the inner wall of the rectangular groove via a connecting block.
[0011] As a preferred embodiment, the extrusion box has a cavity, and the bottom wall of the extrusion box has multiple cylindrical holes communicating with the cavity. Rotating columns are inserted into each of the multiple cylindrical holes, and one end of each of the rotating columns is rotatably connected to a mesh plate. The surface of each rotating column has a threaded groove, and a threaded block matching the threaded groove is threaded onto each rotating column. The threaded block is fixedly installed on the inner wall of the cavity, and a second torsion spring is fixedly installed on the other end of the rotating column. The other end of the second torsion spring is fixedly connected to the inner wall of the cavity.
[0012] As a preferred embodiment, both the first guide wheel and the second guide wheel are fixedly equipped with U-shaped buckles, and the traction rope is sleeved inside the buckles.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] 1. When the extrusion plate crushes the solid waste in the extrusion box, the extrusion plate moves upward and, through the cooperation of the vertical rod, the first spring rod, the trapezoidal block and the slot, drives the grid plate to move vertically upward in the extrusion box. The grid on the grid plate can break up the crushed pieces in the extrusion box and prevent them from adhering to the inside of the extrusion box, thus making it easy to remove the crushed solid waste from the extrusion box. The operation is simple and effectively improves the practicality of the device.
[0015] 2. When the extrusion plate extrudes solid waste, the counterweight plate separates from the extrusion plate. As the grid plate moves upward, the counterweight plate applies a force to the surface of the solid waste, thereby preventing the grid plate from moving the solid waste in the extrusion box upward during the movement, and preventing the solid waste from overflowing from the extrusion box.
[0016] 3. When the lifting block moves to the top of the lifting slot, the traction rope will pull the counterweight plate to move vertically upward. At this time, under the action of the blocking block, the moving rod will drive the trapezoidal block to move out of the slot, and the grid plate will stop moving upward. When the counterweight plate moves back into the rectangular slot, it will be locked back into the rectangular slot. The degree of automation is high and the operation is simple.
[0017] 4. After the mesh plate separates from the extrusion plate, the mesh plate will move vertically downwards under the cooperation of the second torsion spring, the rotating column and the threaded block until it reaches the initial position at the bottom of the extrusion box. The threaded groove will also help the mesh plate move vertically downwards. Attached Figure Description
[0018] Figure 1 This is a three-dimensional cross-sectional structural diagram of a treatment device for preparing high-performance concrete using construction solid waste, as proposed in this invention.
[0019] Figure 2 This is a frontal three-dimensional partial cross-sectional structural diagram of a treatment device for preparing high-performance concrete using construction solid waste, as proposed in this invention.
[0020] Figure 3 This is a bottom-view three-dimensional partial cross-sectional structural diagram of a treatment device for preparing high-performance concrete using construction solid waste, as proposed in this invention.
[0021] Figure 4 This is a three-dimensional structural diagram of the grid plate in this invention;
[0022] Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle;
[0023] Figure 6 for Figure 2 Enlarged structural diagram at point B;
[0024] Figure 7 for Figure 3 Enlarged structural diagram at point C.
[0025] In the diagram: 1. Base, 2. Extrusion box, 3. Support frame, 4. Extrusion cylinder, 5. Extrusion plate, 6. Grid plate, 7. Vertical rod, 8. First spring rod, 9. Trapezoidal block, 10. Slot, 11. Counterweight plate, 12. Rectangular rod, 13. Mounting block, 14. Moving rod, 15. Second spring rod, 16. Limiting block, 17. Positioning block, 18. Lifting groove, 19. Lifting block, 20. Traction rope, 21. First guide wheel, 22. Second guide wheel, 23. Moving block, 24. Support rod, 25. Block, 26. Top rod, 27. Third spring rod, 28. Cavity, 29. Rotating column, 30. Threaded groove, 31. Threaded block, 32. Second torsion spring, 33. Buckle. Detailed Implementation
[0026] 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.
[0027] Reference Figures 1-7 A processing device for preparing high-performance concrete using construction solid waste includes a base 1, an extrusion box 2 fixedly installed on the surface of the base 1, a support frame 3 fixedly installed above the base 1, and an extrusion cylinder 4 (extrusion cylinder 4 is prior art and will not be described in detail here) fixedly installed on the support frame 3. An extrusion plate 5 is fixedly installed at the output end of the extrusion cylinder 4. When extruding and crushing solid waste, the solid waste is first added into the extrusion box 2, and then the output shaft of the extrusion cylinder 4 drives the extrusion plate 5 to move vertically downward. Then the extrusion plate 5 will come into contact with the solid waste in the extrusion box 2, and under the action of pressure, the solid waste in the extrusion box 2 will be extruded and crushed.
[0028] A grid plate 6 is vertically slidably installed inside the extrusion box 2. Vertical rods 7 are vertically and symmetrically fixed on the surface of the grid plate 6. The surfaces of the two vertical rods 7 are provided with mounting grooves. Trapezoidal blocks 9 are installed in the mounting grooves through the first spring rod 8. The two sides of the extrusion plate 5 are provided with slots 10. The trapezoidal blocks 9 are located directly below the slots 10, with the inclined end of the trapezoidal blocks 9 facing upward. When the extrusion plate 5 contacts the trapezoidal blocks 9, the inclined surface will drive the trapezoidal blocks 9 to move into the mounting groove. The first spring rod 8 is compressed until the trapezoidal blocks 9 move into the slots 10. Under the action of the first spring rod 8, the trapezoidal blocks 9 will be inserted into the slots 10.
[0029] A rectangular groove is formed on the lower surface of the extrusion plate 5, and a counterweight plate 11 is inserted into the rectangular groove. A sliding hole connected to the rectangular groove is formed on the inner wall of the slot 10. A rectangular rod 12 is slidably installed in the sliding hole. An installation block 13 is fixedly installed on the lower surface of the rectangular rod 12. A moving hole is formed on the surface of the installation block 13, and a moving rod 14 is slidably installed in the moving hole. A second spring rod 15 is fixedly installed at one end of the moving rod 14 through a fixing block. The other end of the second spring rod 15 is fixedly connected to the installation block 13. A limit block 16 with a trapezoidal longitudinal section is fixedly installed at one end of the moving rod 14. U-shaped positioning blocks 17 are symmetrically fixedly installed on the upper surface of the counterweight plate 11. The positioning blocks 17 are sleeved on the limit blocks 16.
[0030] When the extrusion plate 5 moves into the extrusion box 2, the limiting block 16 is inserted into the U-shaped positioning block 17. Under the action of the limiting block 16 and the positioning block 17, the counterweight plate 11 is locked in the rectangular groove. At the same time, one end of the rectangular rod 12 is inserted into the slot 10. When the trapezoidal block 9 is inserted into the slot 10, it will first contact the rectangular rod 12. Under the action of the elastic force of the first spring rod 8, the trapezoidal block 9 will drive the rectangular rod 12 to move into the rectangular groove.
[0031] The support frame 3 has symmetrical vertically opened lifting grooves 18, and lifting blocks 19 are slidably installed in the two lifting grooves 18. Traction ropes 20 are fixedly installed on the two lifting blocks 19. The upper surface of the extrusion plate 5 is symmetrically rotated and installed with first guide wheels 21. The two sides of the extrusion plate 5 are rotatably installed with second guide wheels 22. The upper surface of the extrusion plate 5 has symmetrically opened through holes that communicate with the rectangular groove. The traction ropes 20 are wound around the first guide wheels 21 and the second guide wheels 22 and pass through the through holes. One end is fixedly installed on the counterweight plate 11. The rectangular groove is provided with a transmission component that drives the moving rod 14 to move towards the slot 10.
[0032] The lifting block 19 can move up and down within the lifting groove 18. When the extrusion plate 5 moves vertically into the extrusion box 2, the lifting block 19, the traction rope 20, and the counterweight plate 11 will move downwards synchronously. When the counterweight plate 11 separates from the extrusion plate 5, and the extrusion plate 5 moves vertically upwards, the counterweight plate 11 will drive the lifting block 19 to move upwards within the lifting groove 18 via the traction rope 20 until the lifting block 19 moves to the top of the lifting groove 18. Then, the traction rope 20 will pull the counterweight plate 11 to move vertically upwards until the counterweight plate 11 returns to the rectangular groove.
[0033] The transmission assembly includes a movable block 23 that is horizontally slidably mounted on the inner wall of a rectangular groove, a support rod 24 that is rotatably mounted on the movable block 23 via a first torsion spring, a stop block 25 that is rotatably mounted on one end of the support rod 24, and an L-shaped top rod 26 that is fixedly mounted on the movable block 23. The top rod 26 and the movable rod 14 are on the same horizontal line. The stop block 25 is in contact with the traction rope 20. A third spring rod 27 is fixedly mounted on one end of the movable block 23. The other end of the third spring rod 27 is fixedly connected to the inner wall of the rectangular groove via a connecting block.
[0034] Under the torque of the first torsion spring, the support rod 24 will keep the stop block 25 in constant contact with the traction rope 20. When the traction rope 20 moves downward relative to the through hole, the stop block 25 will exert a force on the support rod 24 to rotate away from the traction rope 20. At this time, under the action of friction, it will not drive the moving block 23 to move. When the traction rope 20 moves upward relative to the through hole, under the action of friction, the traction rope 20 will drive the stop block 25 to move vertically upward, and then drive the moving block 23 to move through the support rod 24.
[0035] The extrusion box 2 has a cavity 28. The bottom wall of the extrusion box 2 has multiple cylindrical holes that communicate with the cavity 28. Rotating columns 29 are inserted into each of the cylindrical holes. One end of each rotating column 29 is rotatably connected to the grid plate 6. The surface of the rotating column 29 has a threaded groove 30. A threaded block 31 that matches the threaded groove 30 is threaded onto the rotating column 29. The threaded block 31 is fixedly installed on the inner wall of the cavity 28. A second torsion spring 32 is fixedly installed on the other end of the rotating column 29. The other end of the second torsion spring 32 is fixedly connected to the inner wall of the cavity 28.
[0036] When the extrusion plate 5 moves vertically upward, the grid plate 6 will drive multiple rotating columns 29 to move vertically upward. During the movement, the rotating columns 29 rotate under the action of the threaded block 31. The second torsion spring 32 is a stretchable torsion spring. During the movement and rotation of the rotating columns 29, the second torsion spring 32 will rotate and stretch. Under the action of the second torsion spring 32, a downward pulling force will be generated on the grid plate 6. By setting multiple second torsion springs 32, the magnitude of the pulling force is increased. At the same time, during the rotation of the rotating columns 29, under the action of the threaded groove 30, it is helpful for the rotating columns 29 to move within the solid waste.
[0037] U-shaped buckles 33 are fixedly installed on both the first guide wheel 21 and the second guide wheel 22. The traction rope 20 is sleeved in the buckle 33. Under the action of the buckle 33, the traction rope 20 can be prevented from falling off the first guide wheel 21 and the second guide wheel 22.
[0038] In this invention, when the solid waste in the compression box 2 is further compressed, the compression cylinder 4 drives the compression plate 5 to move vertically downward. When the compression plate 5 is inserted into the compression box 2, it will first contact the two trapezoidal blocks 9. Under the action of the inclined plane, the compression plate 5 will drive the trapezoidal blocks 9 to move into the mounting groove. The first spring rod 8 is compressed until the trapezoidal blocks 9 move into the slot 10. Under the action of the elastic force of the first spring rod 8, the trapezoidal blocks 9 will be inserted into the slot 10. At the same time, the lifting block 19 will move vertically downward in the lifting groove 18.
[0039] When the trapezoidal block 9 is inserted into the slot 10, it will contact one end of the rectangular rod 12. The trapezoidal block 9 will drive the rectangular rod 12 to move into the rectangular slot. The rectangular rod 12 will drive the moving rod 14 to move away from the positioning block 17 through the mounting block 13. The moving rod 14 will then drive the limiting block 16 to move until the limiting block 16 separates from the positioning block 17, the locking effect on the counterweight plate 11 disappears, and the counterweight plate 11 separates from the pressing plate 5.
[0040] After crushing, the compression cylinder 4 drives the compression plate 5 to move vertically upward. At this time, under the action of the slot 10, the grid plate 6 will move vertically upward through the vertical rod 7. During the movement of the grid plate 6, the solid waste will pass through the grid on the grid plate 6, thereby breaking up the crushed pieces in the compression box 2 and preventing them from adhering to the inside of the compression box 2. This makes it easy to remove the crushed solid waste from the compression box 2. The operation is simple and effectively improves the practicality of the device.
[0041] After separating from the extrusion plate 5, the counterweight plate 11 will remain on the crushed solid waste. When the grid plate 6 moves vertically upward, the weight of the counterweight plate 11 can prevent the grid plate 6 from driving the solid waste in the extrusion box 2 upward, thus preventing the solid waste from overflowing from the extrusion box 2.
[0042] Simultaneously, as the extrusion plate 5 moves upward and the counterweight plate 11 remains inside the extrusion box 2, the traction rope 20 drives the lifting block 19 to move vertically upward within the lifting groove 18 via the first guide wheel 21 and the second guide wheel 22. At this time, the traction rope 20 moves vertically downward relative to the through hole. Once the lifting block 19 reaches the uppermost end of the lifting groove 18, it will drive the counterweight plate 11 to move vertically upward via the traction rope 20. At this time, the traction rope 20 moves vertically upward relative to the through hole. Under the action of friction, it will drive the blocking block 25 to move vertically upward, and then through the support... Rod 24 drives moving block 23 to move closer to rectangular rod 12. When moving, moving block 23 will compress the third spring rod 27 and cause top rod 26 to contact one end of rectangular rod 12. Under the action of top rod 26, rectangular rod 12 is moved towards trapezoidal block 9 until it contacts trapezoidal block 9 and pushes trapezoidal block 9 into the mounting groove, so that trapezoidal block 9 is separated from slot 10, thereby separating extrusion plate 5 from grid plate 6. When the blocking block 25 moves to the top, the resistance will be greater than the friction, and the blocking block 25 and traction rope 20 will slide relative to each other.
[0043] When the counterweight plate 11 moves into the rectangular groove under the action of the traction rope 20, the U-shaped positioning block 17 fixedly installed on the counterweight plate 11 will contact the limiting block 16 fixedly installed on the moving rod 14. Since the longitudinal section of the limiting block 16 is trapezoidal, the positioning block 17 will drive the moving rod 14 to move towards the second spring rod 15 under the action of the inclined plane. The second spring rod 15 is stretched, and then under the action of the elastic force of the second spring rod 15, the limiting block 16 is inserted into the positioning block 17, locking the counterweight plate 11 in the rectangular groove. The degree of automation is high and the operation is simple.
[0044] After the grid plate 6 separates from the extrusion plate 5, the torque of the second torsion spring 32 will drive the rotating column 29 to move downward and rotate. Under the action of the threaded groove 30, the rotating column 29 acts like a spiral blade. During the rotation, the rotating column 29 helps the grid plate 6 to move vertically downward in the solid waste, avoiding the grid plate 6 from being unable to move vertically downward due to excessive resistance from the solid waste.
[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A treatment device for preparing high-performance concrete using construction solid waste, comprising a base (1), characterized in that, An extrusion box (2) is fixedly installed on the surface of the base (1), a support frame (3) is fixedly installed above the base (1), an extrusion cylinder (4) is fixedly installed on the support frame (3), and an extrusion plate (5) is fixedly installed at the output end of the extrusion cylinder (4). A grid plate (6) is vertically slidably installed inside the extrusion box (2). Vertical rods (7) are vertically and symmetrically fixed on the surface of the grid plate (6). The surfaces of the two vertical rods (7) are provided with mounting grooves. Trapezoidal blocks (9) are installed in the mounting grooves through the first spring rod (8). Slots (10) are provided on both sides of the extrusion plate (5). The trapezoidal blocks (9) are located directly below the slots (10). The lower surface of the extrusion plate (5) is provided with a rectangular groove, and a counterweight plate (11) is inserted in the rectangular groove. The inner wall of the slot (10) is provided with a sliding hole that communicates with the rectangular groove. A rectangular rod (12) is slidably installed in the sliding hole. An installation block (13) is fixedly installed on the lower surface of the rectangular rod (12). A moving hole is provided on the surface of the installation block (13). A moving rod (14) is slidably installed in the moving hole. A second spring rod (15) is fixedly installed at one end of the moving rod (14) through a fixing block. The other end of the second spring rod (15) is fixedly connected to the installation block (13). A limiting block (16) with a trapezoidal longitudinal section is fixedly installed at one end of the moving rod (14). A U-shaped positioning block (17) is symmetrically fixedly installed on the upper surface of the counterweight plate (11). The positioning block (17) is sleeved on the limiting block (16). The support frame (3) is symmetrically and vertically provided with lifting grooves (18), and lifting blocks (19) are slidably installed in the two lifting grooves (18). Traction ropes (20) are fixedly installed on the two lifting blocks (19). The upper surface of the extrusion plate (5) is symmetrically and rotatably provided with first guide wheels (21). The two sides of the extrusion plate (5) are rotatably provided with second guide wheels (22). The upper surface of the extrusion plate (5) is symmetrically provided with through holes that communicate with the rectangular groove. The traction rope (20) is wound around the first guide wheel (21) and the second guide wheel (22) and passes through the through hole. One end is fixedly installed on the counterweight plate (11). The rectangular groove is provided with a transmission component that drives the moving rod (14) to move towards the slot (10) via the traction rope (20).
2. The treatment device for preparing high-performance concrete using construction solid waste according to claim 1, characterized in that, The transmission assembly includes a movable block (23) horizontally slidably mounted on the inner wall of a rectangular groove, a support rod (24) rotatably mounted on the movable block (23) via a first torsion spring, a stop block (25) rotatably mounted on one end of the support rod (24), and an L-shaped top rod (26) fixedly mounted on the movable block (23). The top rod (26) and the movable rod (14) are on the same horizontal line. The stop block (25) is in contact with the traction rope (20). A third spring rod (27) is fixedly mounted on one end of the movable block (23), and the other end of the third spring rod (27) is fixedly connected to the inner wall of the rectangular groove via a connecting block.
3. The treatment device for preparing high-performance concrete using construction solid waste according to claim 2, characterized in that, The extrusion box (2) has a cavity (28) inside. The bottom wall of the extrusion box (2) has multiple cylindrical holes that communicate with the cavity (28). Rotating columns (29) are inserted into each of the multiple cylindrical holes. One end of each of the multiple rotating columns (29) is rotatably connected to the grid plate (6). The surface of the rotating column (29) has a threaded groove (30). A threaded block (31) that matches the threaded groove (30) is threaded onto the rotating column (29). The threaded block (31) is fixedly installed on the inner wall of the cavity (28). A second torsion spring (32) is fixedly installed on the other end of the rotating column (29). The other end of the second torsion spring (32) is fixedly connected to the inner wall of the cavity (28).
4. The processing device for preparing high-performance concrete using construction solid waste according to claim 1, characterized in that, U-shaped buckles (33) are fixedly installed on the first guide wheel (21) and the second guide wheel (22), and the traction rope (20) is sleeved in the buckle (33).
Citation Information
Patent Citations
Method and equipment for preparing environment-friendly concrete by using building solid waste
CN114210437A
Solid-liquid separation treatment equipment for waste treatment
CN116832903A