Concrete crusher with screening function

Abstract

This invention relates to the field of concrete crushing and screening technology, specifically a concrete crusher with screening function. The feeding mechanism, crushing mechanism, and recycling mechanism are arranged sequentially from top to bottom, with the feeding mechanism located at the top of the machine body, and the crushing and recycling mechanisms both located inside the machine body. The concrete crusher of this invention features sized feeding openings for more uniform material feeding and more even crushing. The crushing rollers and grinding plates allow for multiple crushing and grinding processes, resulting in more thorough material handling. The screening screen separates the material by size. For dusty, pulverized materials, a spraying component during recycling reduces dust, thereby improving overall work efficiency and providing basic protection for the working environment of the personnel.

Description

Technical Field

[0001] This invention relates to the field of concrete crushing and screening technology, specifically a concrete crusher with screening function. Background Technology

[0002] The state encourages the adoption of advanced technologies, processes, equipment, and management measures to promote the reduction of construction waste at its source and establish a construction waste recycling system. Currently, the main method for reusing concrete solid waste is crushing, which presents challenges in processing.

[0003] A construction concrete crusher is a piece of equipment used to crush construction waste concrete. It features a large crushing ratio, uniform finished product particle size, low power consumption, and convenient maintenance. It can also recycle the crushed concrete, reducing resource waste. It is widely used in the fields of construction and concrete waste treatment.

[0004] When recycling waste concrete, it is necessary to crush the concrete using a concrete crusher. Existing concrete crushers require screening the crushed concrete through a screen at the bottom. The screen is driven by a motor and moves back and forth in the crusher to accelerate the screening process. However, this screening method requires starting a separate set of motors, which not only wastes more resources but also makes it easy to forget to start the motor, causing the screen to become stationary and thus affecting the screening effect of the concrete crusher. Summary of the Invention

[0005] The purpose of this invention is to provide a concrete crusher with screening function to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a concrete crusher with screening function, comprising a body, a feeding mechanism, a crushing mechanism and a recycling mechanism, wherein the feeding mechanism, the crushing mechanism and the recycling mechanism are arranged sequentially from top to bottom, and the feeding mechanism is located at the upper end of the body, while the crushing mechanism and the recycling mechanism are both located inside the body;

[0007] The feeding mechanism includes a feeding port, and a feeding chamber is provided at the lower end of the feeding port. A small discharge port and a large discharge port are opened at the lower end of the feeding chamber. Both the small discharge port and the large discharge port are connected to the interior of the machine body.

[0008] The crushing mechanism includes a motor, a crushing roller, and a screening screen. Both the crushing roller and the screening screen are located inside the machine body. The crushing roller is located at the lower end of the feed inlet, and the screening screen is located at the lower end of the crushing roller. Both ends of the crushing roller and one end of the screening screen are connected to the side of the machine body through a meshing transmission assembly. The other end of the screening screen is provided with a baffle, which is located on the side of the machine body. A locking rod is provided at the lower end of the baffle, and a third spring is provided at the lower end of the locking rod. The third spring is located inside the machine body.

[0009] The recycling mechanism includes a recycling chamber located at the lower end of the screening screen. Inside the recycling chamber, there is a first connecting plate and a discharge plate. The first connecting plate is located at the upper end of the discharge plate. The discharge plate is inclined, and one end of the discharge plate is fixedly connected to the inner side of the machine body. The other end of the discharge plate is connected to a baffle plate located on the side of the machine body. A spraying assembly is located on the outward side of the baffle plate, and the spraying assembly is connected to the outer side of the machine body. The spraying assembly is located at the lower end of the meshing transmission assembly.

[0010] Furthermore, the feeding chamber is inclined, and a wire mesh is provided at the lower end of the inside of the feeding chamber;

[0011] Multiple small discharge ports are provided, and the multiple small discharge ports are evenly arranged at the lower end of the feeding chamber. The multiple small discharge ports are all located at the upper end of the large discharge port, and the lower end of each small discharge port is connected to the interior of the machine body.

[0012] Furthermore, a second connecting plate is provided on both sides of the inner side of the small feed port, and a plurality of second connecting rods are provided on the outward side of the second connecting plate. A second spring is provided at the outward end of each second connecting rod, and the second spring is located inside the machine body.

[0013] Furthermore, the output end of the motor is provided with a drive gear, and a driven gear is meshed with the outer side of the drive gear. Both the drive gear and the driven gear are fixedly connected to the crushing roller through a transmission shaft.

[0014] Furthermore, the crushing mechanism also includes a grinding plate. The crushing roller, grinding plate, and screening screen are arranged sequentially from top to bottom. One end of the grinding plate is connected to the machine body through a sliding component, and the sliding component is connected to the meshing transmission component.

[0015] Furthermore, the sliding assembly includes a second rotating disk and a second connecting sleeve. The second rotating disk is connected to the meshing transmission assembly, and the side of the second rotating disk and the interior of the second connecting sleeve are connected through a protrusion.

[0016] The second connecting sleeve is disposed on the end side of the grinding plate, and a first rack is disposed on the side of the second connecting sleeve. A second rack is disposed at the lower end of the first rack. The first rack and the second rack are connected by a gear body. At the same time, both the first rack and the second rack are connected to the end of the grinding plate.

[0017] Furthermore, the meshing transmission assembly includes a first bevel gear and a second bevel gear, both of which are disposed inside the housing, and the housing is disposed inside the machine body;

[0018] A second synchronous pulley is provided at one end of the first bevel gear. One end of the second synchronous pulley is fixedly connected to the inner side of the housing. A first synchronous belt is provided inside the second synchronous pulley. The first synchronous belt is connected to the connecting shaft of the motor through the first synchronous pulley. At the same time, the other end of the first bevel gear is meshed with the side of the second bevel gear. A first rotating disk is provided at the lower end of the second bevel gear. A first connecting sleeve is provided on one side of the lower end of the first rotating disk. The first connecting sleeve is provided at the end of the screening screen.

[0019] Furthermore, the meshing transmission assembly also includes a third bevel gear and a fourth bevel gear. The third bevel gear is disposed on one side of the fourth bevel gear, and the outer side of the third bevel gear and the fourth bevel gear are meshed together. Meanwhile, one side of the fourth bevel gear is movably connected to the machine body through a rotating shaft. The fourth bevel gear is disposed on the upper end of the second rotating disk, and the fourth bevel gear is connected to the second rotating disk through a connecting shaft.

[0020] A fourth synchronous pulley is provided on one side of the third bevel gear. The interior of the fourth synchronous pulley is connected to the third synchronous pulley via a second synchronous belt. At the same time, the third synchronous pulley is connected to one end of the crushing roller via a connecting shaft.

[0021] Furthermore, one end of the first connecting plate is movably connected to the inner side of the machine body, and the other end of the first connecting plate is provided with a first spring. The first spring is located at the upper end of the discharge plate, and the first spring is fixedly connected to the machine body through a mounting plate.

[0022] Furthermore, the spraying assembly includes a nozzle and a liquid storage box. The liquid storage box is located on the outer side of the machine body, and the lower end of the liquid storage box is connected to one side of the connecting box via a connecting pipe. The nozzle is located at the lower end of the connecting box.

[0023] The connecting box is equipped with a piston rod and a shielding block. The shielding block is located at the upper end of the nozzle, and one end of the shielding block is connected to the piston rod via a first connecting rod. One end of the piston rod is located on the outward side of the shielding block.

[0024] This invention provides a concrete crusher with screening function through improvements, which have the following improvements and advantages compared with the prior art:

[0025] The concrete crusher of this invention features a variety of feeding openings, resulting in more uniform material feeding and a more even crushing process. The crushing rollers and grinding plates allow for multiple crushing and grinding operations, ensuring more thorough material processing. A screening screen separates the materials by size. For dusty, pulverized materials, a spray system helps reduce dust during the recycling process. This not only improves overall work efficiency but also provides a basic guarantee for the working environment of the workers. Attached Figure Description

[0026] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0027] Figure 1 This is a front view of the concrete crusher of the present invention;

[0028] Figure 2 This is a side view of the concrete crusher of the present invention;

[0029] Figure 3 This is an enlarged view of the crushing mechanism of the present invention;

[0030] Figure 4 This is an enlarged view of the screening screen of the present invention;

[0031] Figure 5 In this invention Figure 2 A magnified view of a section at point A in the middle;

[0032] Figure 6 In this invention Figure 1 A magnified view of a section at point B in the middle;

[0033] Figure 7 This is an enlarged view of the connection between the fourth synchronous pulley and the third bevel gear of the present invention;

[0034] Figure 8 This is an enlarged view of the connection between the second synchronous pulley and the first bevel gear of the present invention;

[0035] Figure 9 This is an enlarged view of the connection between the first connecting rod and the shielding block of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Machine body; 2. Motor; 3. Drive gear; 4. Driven gear; 5. Crushing roller; 6. First synchronous pulley; 7. First synchronous belt; 8. Second synchronous pulley; 9. First bevel gear; 10. Second bevel gear; 11. First rotating disk; 12. First connecting sleeve; 13. Outer shell; 14. Screening screen; 15. Third synchronous pulley; 16. Second synchronous belt; 17. Fourth synchronous pulley; 18. Third bevel gear; 19. Fourth bevel gear; 20. Second rotating disk; 21. Second connecting sleeve; 22. First rack and pinion; 23. 24. Gear body; 25. Second rack rod; 26. Grinding plate; 27. First connecting plate; 28. First spring; 29. ​​Discharge plate; 30. Baffle plate; 31. Piston rod; 32. First connecting rod; 33. Baffle block; 34. Nozzle; 35. Connecting box; 36. Liquid storage box; 37. Feed inlet; 38. Feed chamber; 39. Small discharge port; 40. Large discharge port; 41. Second spring; 42. Second connecting rod; 43. Second connecting plate; 44. Wire mesh; 45. Baffle plate; 46. Clamping rod; 47. Third spring. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0042] refer to Figures 1-9This embodiment provides a concrete crusher with screening function. The concrete crusher includes a body 1, a feeding mechanism, a crushing mechanism and a recycling mechanism, wherein the feeding mechanism, the crushing mechanism and the recycling mechanism are arranged in order from top to bottom, and the feeding mechanism is located at the upper end of the body 1, while the crushing mechanism and the recycling mechanism are both located inside the body 1.

[0043] In this embodiment, the feeding mechanism includes a feeding port 36, a feeding chamber 37, a small discharge port 38, and a large discharge port 39. The feeding chamber 37 is located at the lower end of the feeding port 36, and the small discharge port 38 and the large discharge port 39 are located at the lower end of the feeding chamber 37, both communicating with the interior of the machine body 1. Furthermore, the feeding chamber 37 is inclined, and a wire mesh 43 is provided at the lower end of the interior of the feeding chamber 37. It is noteworthy that multiple small discharge ports 38 are provided, evenly distributed at the lower end of the feeding chamber 37, and all small discharge ports 38 are located above the large discharge port 39, with the lower end of each small discharge port 38 communicating with the interior of the machine body 1. Specifically, a second connecting plate 42 is provided on both sides of the small discharge port 38. A plurality of second connecting rods 41 are provided on the outward side of the second connecting plate 42. A second spring 40 is provided on the outward end of each second connecting rod 41. The second spring 40 is located inside the machine body 1.

[0044] In this embodiment, the crushing mechanism includes a motor 2, a crushing roller 5, a grinding plate 25, and a screening screen 14. The output end of the motor 2 is equipped with a drive gear 3, and a driven gear 4 is meshed with the outer side of the drive gear 3. Both the drive gear 3 and the driven gear 4 are fixedly connected to the crushing roller 5 via a transmission shaft. The crushing roller 5 and the screening screen 14 are both located inside the machine body 1. The crushing roller 5 is located at the lower end of the feed inlet 36, and the screening screen 14 is located at the lower end of the crushing roller 5. Both ends of the crushing roller 5 and one end of the screening screen 14 are connected to the side of the machine body 1 via a meshing transmission assembly. The other end of the screening screen 14 is equipped with a baffle 44, which is located on the side of the machine body 1. A locking rod 45 is located at the lower end of the baffle 44, and a third spring 46 is located at the lower end of the locking rod 45. The third spring 46 is located inside the machine body 1.

[0045] Furthermore, the crushing roller 5, grinding plate 25, and screening screen 14 are arranged sequentially from top to bottom. One end of the grinding plate 25 is connected to the machine body 1 via a sliding assembly, which is also connected to the meshing transmission assembly. Specifically, the sliding assembly includes a second rotating disk 20 and a second connecting sleeve 21. The second rotating disk 20 is connected to the meshing transmission assembly, and the side of the second rotating disk 20 and the interior of the second connecting sleeve 21 are connected through a protrusion. The second connecting sleeve 21 is located on the end side of the grinding plate 25, and a first rack 22 is provided on the side of the second connecting sleeve 21. A second rack 24 is provided at the lower end of the first rack 22. The first rack 22 and the second rack 24 are connected via a gear body 23, and both the first rack 22 and the second rack 24 are connected to the end of the grinding plate 25.

[0046] Furthermore, the meshing transmission assembly includes a first bevel gear 9 and a second bevel gear 10, both of which are located inside the housing 13, which in turn is located inside the machine body 1. A second synchronous pulley 8 is located at one end of the first bevel gear 9, and one end of the second synchronous pulley 8 is fixedly connected to the inner side of the housing 13. A first synchronous belt 7 is located inside the second synchronous pulley 8, and the first synchronous belt 7 is connected to the connecting shaft of the motor 2 via the first synchronous pulley 6. Simultaneously, the other end of the first bevel gear 9 meshes with the side of the second bevel gear 10. A first rotating disk 11 is located at the lower end of the second bevel gear 10, and a first connecting sleeve 12 is located on one side of the lower end of the first rotating disk 11. The first connecting sleeve 12 is located at the end of the screening screen 14.

[0047] Furthermore, the meshing transmission assembly also includes a third bevel gear 18 and a fourth bevel gear 19. The third bevel gear 18 is disposed on one side of the fourth bevel gear 19, and the outer side of the third bevel gear 18 is meshed with the fourth bevel gear 19. Simultaneously, one side of the fourth bevel gear 19 is movably connected to the machine body 1 via a rotating shaft. The fourth bevel gear 19 is disposed at the upper end of the second rotating disk 20 and is connected to the second rotating disk 20 via a connecting shaft. A fourth synchronous pulley 17 is disposed on one side of the third bevel gear 18. The interior of the fourth synchronous pulley 17 is connected to the third synchronous pulley 15 via a second synchronous belt 16. The third synchronous pulley 15 is connected to one end of the crushing roller 5 via a connecting shaft.

[0048] In this embodiment, the recycling mechanism includes a recycling chamber located at the lower end of the screening screen 14. Inside the recycling chamber, a first connecting plate 26 and a discharge plate 28 are arranged. The first connecting plate 26 is located above the discharge plate 28, which is inclined. One end of the discharge plate 28 is fixedly connected to the inner side of the machine body 1, and the other end is connected to a baffle plate 29 located on the side of the machine body 1. A spraying assembly is located on the outward-facing side of the baffle plate 29, connected to the outer side of the machine body 1, and positioned at the lower end of the meshing transmission assembly. Specifically, one end of the first connecting plate 26 is movably connected to the inner side of the machine body 1, and the other end of the first connecting plate 26 is equipped with a first spring 27 located above the discharge plate 28. The first spring 27 is fixedly connected to the machine body 1 via a mounting plate.

[0049] Furthermore, the spraying assembly includes a nozzle 33 and a liquid storage box 35. The liquid storage box 35 is located on the outer side of the body 1, and its lower end is connected to one side of a connecting box 34 via a connecting pipe. The nozzle 33 is located at the lower end of the connecting box 34. The connecting box 34 contains a piston rod 30 and a shielding block 32. The shielding block 32 is located at the upper end of the nozzle 33, and one end of the shielding block 32 is connected to the piston rod 30 via a first connecting rod 31. One end of the piston rod 30 is located on the outward-facing side of the shielding plate 29.

[0050] In this embodiment, when the concrete crusher is operating, waste concrete enters the feed chamber 37 through the feed inlet 36, and then enters the small discharge inlet 38 and the large discharge inlet 39. It is worth noting that the waste concrete first comes into contact with multiple sets of small discharge inlets 38; in this embodiment, two sets of small discharge inlets 38 are provided. Due to the small openings of the small discharge inlets 38, not all the waste concrete will enter the machine body 1 through the first set of small discharge inlets 38. During discharge, some will accumulate on the small discharge inlets 38, causing slight blockage, while the remaining waste concrete will enter the second set of small discharge inlets 38 and the large discharge inlet 39. As waste concrete enters, it impacts the waste concrete blocking the small discharge port 38. The impact compresses the second connecting plate 42. When the second connecting plate 42 moves, it compresses and contracts the second spring 40 on one side. At this time, the opening of the small discharge port 38 will increase, allowing the waste concrete to fall. The wire mesh 43 can deform when the second connecting plate 42 moves to adapt to the position of the second connecting plate 42 and block the connection between the second connecting plate 42 and the machine body 1, preventing the waste concrete from obstructing the movement of the second connecting plate 42. Through the above operation, the waste concrete will enter the interior of the machine body 1 through the two sets of small discharge ports 38 and large discharge ports 39, and fall evenly between the two sets of crushing rollers 5, thereby improving the efficiency of concrete crushing.

[0051] After the waste concrete enters the machine body 1, the motor 2 is started, which drives the drive gear 3 and driven gear 4 to rotate. The two sets of gears drive the two sets of crushing rollers 5 to rotate in opposite directions, crushing the waste concrete. The initially crushed waste concrete falls onto the grinding plate 25 for further grinding. After crushing, it is screened through the screening screen 14. Specifically, the crushed concrete falls onto the screening screen 14. When the motor 2 rotates, it drives the first bevel gear 9 to rotate through the first synchronous pulley 6, the first synchronous belt 7, and the second synchronous pulley 8. The first bevel gear 9 meshes with the second bevel gear 10, driving the first rotating disk 11 to rotate. The first rotating disk 11 slides in the movable groove inside the first connecting sleeve 12 through the protrusion, causing the first connecting sleeve 12 and the screening screen 14 to move. As the first rotating disk 11 rotates continuously, the screening screen 14 moves back and forth, screening the concrete fragments on its top. After screening, the clamping rod 45 can be moved to compress the third spring 46, causing it to contract. Once the clamping rod 45 disengages from the baffle 44, the baffle 44 can be rotated to open and clean the concrete filtered down from the top of the screening mesh 14. This operation allows for thorough crushing of the concrete, and simultaneous screening, thereby improving the efficiency of concrete crushing.

[0052] For the concrete that falls into the recycling chamber after screening, the crushed concrete will fall onto the first connecting plate 26 and accumulate there. When the first connecting plate 26 accumulates to a preset weight, the first spring 27 on one side of the first connecting plate 26 will be compressed and deformed, causing the accumulated material to fall onto the discharge plate 28. After the material leaves the first connecting plate 26, the first spring 27 will reset, pushing the first connecting plate 26 to reset as well. The inclined surface of the discharge plate 28 will cause the material to impact the baffle 29 at a relatively high speed, thereby discharging the material. When the baffle 29 is impacted, it will rotate. When the baffle 29 rotates, it will push the piston rod 30 on one side. When the piston rod 30 moves, it will drive the baffle block 32 to move through the first connecting rod 31, so that the baffle block 32 will be free from blocking the nozzle 33. At the same time, when the piston rod 30 moves, it will squeeze the dust-suppressing liquid inside the connecting box 34, so that the dust-suppressing liquid will be sprayed out through the nozzle 33. The nozzle 33 will spray atomized dust-suppressing liquid, thereby treating the dust of the discharged concrete.

[0053] After all the material is discharged, the baffle 29 will reset. Simultaneously, the liquid storage box 35 will add liquid to the connecting box 34 through a pipe, pushing the piston rod 30 to reset. As the piston rod 30 resets, it will cause the baffle block 32 to block the nozzle 33, preventing the connecting box 34 from overflowing through the nozzle 33. It is worth noting that when the first connecting plate 26 accumulates a certain weight of material again, the above operation will be repeated, thus effectively reducing dust from the discharged concrete pulverizer and preventing dust from spreading and affecting the working environment.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete crusher with screening function, characterized in that, It includes an organic body (1), a feeding mechanism, a crushing mechanism and a recycling mechanism, which are arranged sequentially from top to bottom. The feeding mechanism is located at the upper end of the body (1), and the crushing mechanism and the recycling mechanism are both located inside the body (1). The feeding mechanism includes a feeding port (36), and a feeding chamber (37) is provided at the lower end of the feeding port (36). A small discharge port (38) and a large discharge port (39) are provided at the lower end of the feeding chamber (37). At the same time, the small discharge port (38) and the large discharge port (39) are both connected to the interior of the machine body (1). The crushing mechanism includes a motor (2), a crushing roller (5), and a screening screen (14). The crushing roller (5) and the screening screen (14) are both located inside the machine body (1). The crushing roller (5) is located at the lower end of the feed inlet (36), and the screening screen (14) is located at the lower end of the crushing roller (5). At the same time, both ends of the crushing roller (5) and one end of the screening screen (14) are connected to the side of the machine body (1) through a meshing transmission assembly. The other end of the screening screen (14) is provided with a baffle (44). The baffle (44) is located on the side of the machine body (1). The lower end of the baffle (44) is provided with a locking rod (45). The lower end of the locking rod (45) is provided with a third spring (46). The third spring (46) is located inside the machine body (1). The recycling mechanism includes a recycling chamber, which is located at the lower end of the screening screen (14). The recycling chamber is equipped with a first connecting plate (26) and a discharge plate (28). The first connecting plate (26) is located at the upper end of the discharge plate (28). The discharge plate (28) is inclined and is fixedly connected to the inner side of the machine body (1). A shield (29) is located on the side of the machine body (1). A spraying assembly is located on the outward side of the shield (29). The spraying assembly is connected to the outer side of the machine body (1) and is located at the lower end of the meshing transmission assembly. The feeding chamber (37) is inclined, and a wire mesh (43) is provided at the lower end of the inside of the feeding chamber (37). Multiple small discharge ports (38) are provided, and multiple small discharge ports (38) are evenly arranged at the lower end of the feeding chamber (37). Multiple small discharge ports (38) are all arranged at the upper end of the large discharge port (39). At the same time, the lower end of each small discharge port (38) is connected to the interior of the machine body (1). The small discharge port (38) is provided with a second connecting plate (42) on both sides inside. The second connecting plate (42) is provided with a plurality of second connecting rods (41) on the outward side. Each second connecting rod (41) is provided with a second spring (40) at the outward end. The second spring (40) is provided inside the machine body (1). The crushing mechanism also includes a grinding plate (25). The crushing roller (5), grinding plate (25) and screening screen (14) are arranged sequentially from top to bottom. At the same time, one end of the grinding plate (25) is connected to the machine body (1) through a sliding component, and the sliding component is connected to the meshing transmission component. One end of the first connecting plate (26) is movably connected to the inner side of the machine body (1), and the other end of the first connecting plate (26) is provided with a first spring (27). The first spring (27) is located at the upper end of the discharge plate (28), and the first spring (27) is fixedly connected to the machine body (1) through the mounting plate. The spraying assembly includes a nozzle (33) and a liquid storage box (35). The liquid storage box (35) is located on the outside of the body (1). The lower end of the liquid storage box (35) is connected to one side of the connecting box (34) through a connecting pipe. The nozzle (33) is located at the lower end of the connecting box (34). The connecting box (34) is provided with a piston rod (30) and a shield (32). The shield (32) is located at the upper end of the nozzle (33). At the same time, one end of the shield (32) is connected to the piston rod (30) through the first connecting rod (31). One end of the piston rod (30) is located on the side of the shield (29) facing outward.

2. A concrete crusher with screening function according to claim 1, characterized in that, The output end of the motor (2) is provided with a drive gear (3), and a driven gear (4) is meshed with the outer side of the drive gear (3). Both the drive gear (3) and the driven gear (4) are fixedly connected to the crushing roller (5) through a transmission shaft.

3. A concrete crusher with screening function according to claim 1, characterized in that, The sliding assembly includes a second rotating disk (20) and a second connecting sleeve (21). The second rotating disk (20) is connected to the meshing transmission assembly. The side of the second rotating disk (20) and the interior of the second connecting sleeve (21) are connected through a protrusion. The second connecting sleeve (21) is disposed on the end side of the grinding plate (25), and a first rack rod (22) is disposed on the side of the second connecting sleeve (21). A second rack rod (24) is disposed at the lower end of the first rack rod (22). The first rack rod (22) and the second rack rod (24) are connected by a gear body (23). At the same time, the first rack rod (22) and the second rack rod (24) are both connected to the end of the grinding plate (25).

4. A concrete crusher with screening function according to claim 1, characterized in that, The meshing transmission assembly includes a first bevel gear (9) and a second bevel gear (10), both of which are disposed inside the housing (13), and the housing (13) is disposed inside the body (1); A second synchronous pulley (8) is provided at one end of the first bevel gear (9). One end of the second synchronous pulley (8) is fixedly connected to the inner side of the outer shell (13). A first synchronous belt (7) is provided inside the second synchronous pulley (8). The first synchronous belt (7) is connected to the connecting shaft of the motor (2) through the first synchronous pulley (6). At the same time, the other end of the first bevel gear (9) is meshed with the side of the second bevel gear (10). A first rotating disk (11) is provided at the lower end of the second bevel gear (10). A first connecting sleeve (12) is provided on one side of the lower end of the first rotating disk (11). The first connecting sleeve (12) is provided at the end of the screening screen (14).

5. A concrete crusher with screening function according to claim 1, characterized in that, The meshing transmission assembly also includes a third bevel gear (18) and a fourth bevel gear (19). The third bevel gear (18) is disposed on one side of the fourth bevel gear (19), and the outer side of the third bevel gear (18) and the fourth bevel gear (19) are meshed together. Meanwhile, one side of the fourth bevel gear (19) is movably connected to the machine body (1) through a rotating shaft. The fourth bevel gear (19) is disposed on the upper end of the second rotating disk (20), and the fourth bevel gear (19) is connected to the second rotating disk (20) through a connecting shaft. A fourth synchronous pulley (17) is provided on one side of the third bevel gear (18). The interior of the fourth synchronous pulley (17) is connected to the third synchronous pulley (15) through the second synchronous belt (16). At the same time, the third synchronous pulley (15) is connected to one end of the crushing roller (5) through the connecting shaft.

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