Construction waste crushing device

Abstract

The utility model discloses a construction waste crushing device which comprises a crushing box, a dust removal box, a transition channel and a feed hopper, a booster pump is arranged above the dust removal box, one side of the booster pump is communicated with a water inlet pipe, the booster pump is communicated with a dust removal plate in the dust removal box, a plurality of spray heads are arranged on the dust removal plate, and the spray heads are used for spraying water mist; a crushing assembly is arranged in the middle of the crushing box and used for crushing materials, a sieve plate is obliquely arranged below the crushing assembly, a lifting channel is arranged on one side of the crushing box, the lower portion of the lifting channel communicates with the crushing box through a feeding channel, the upper portion of the lifting channel communicates with the crushing box through a discharging channel, and a spiral shaft is arranged in the middle of the lifting channel. The upper portion of the spiral shaft is matched with an output shaft of the lifting motor, after construction waste enters the crushing device, diffusion of smoke dust can be avoided through water mist sprayed by the spray head, and crushed materials with unqualified sizes can be thrown into the crushing assembly again from the position above the crushing assembly to be crushed repeatedly through cooperation of the sieve plate and the lifting channel.

Description

Technical Field

[0001] This utility model belongs to the technical field of construction waste treatment equipment, and specifically relates to a crushing device for construction waste. Background Technology

[0002] With the continuous development of society, urban construction is also developing rapidly, accompanied by the demolition of many buildings. The construction waste generated during demolition needs to be processed first. To improve screening efficiency, construction waste is usually fed into a screening feeder using equipment such as excavators. The portion of the construction waste that meets customer requirements falls through the screen holes and is then conveyed to form a finished product pile. Larger pieces are further crushed and discharged from the outlet into a vibrating unloader. Currently, excavators directly feed construction waste into the screening feeder before it enters the crusher. As soon as the excavator pours construction waste into the screening feeder, larger pieces continuously enter the crusher. The already crushed waste, partially crushed waste, and newly entered waste mix together, causing interference and easily affecting the crusher's crushing efficiency, thus impacting the overall construction efficiency.

[0003] In response to the above situation, Chinese utility model patent application number 201821909821.7 discloses a construction waste crushing device, which includes: an outer cover, a feed inlet disposed near a screening feeder on the outer cover, crushing blades disposed inside the outer cover, and a discharge outlet disposed below the crushing blades; a buffer plate rotatably connected to the outer cover is provided at the feed inlet, and a torsion spring is provided at the rotatable connection between the buffer plate and the feed inlet, the torsion spring driving the buffer plate to cover the feed inlet. The technical solution of this utility model is that the buffer plate can buffer the impact of construction waste on the crushing blades, providing a certain degree of protection for the crushing blades; the torsion spring drives the buffer plate to cover the feed inlet, and when the construction waste on the buffer plate reaches a certain weight, the buffer plate rotates, opening the feed inlet, and the construction waste is poured into the crushing device for crushing, with the crushed waste leaking out from the discharge outlet; this process is repeated, achieving relatively concentrated crushing of construction waste, resulting in better crushing efficiency and facilitating the acceleration of the entire construction process.

[0004] However, the construction waste crushing device cannot handle the smoke and dust generated during the crushing process. The smoke and dust generated during the crushing operation will pollute the environment and affect the health of the workers. Furthermore, the construction waste crushing device cannot screen or repeatedly crush construction waste that is still large in size after the initial crushing, and cannot guarantee the output size of the crushed construction waste. Utility Model Content

[0005] This utility model provides a crushing device for construction waste, which aims to solve the problems that existing construction waste crushing devices cannot handle the smoke and dust generated during the crushing process and cannot repeatedly crush construction waste that is large in size after the initial crushing.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A construction waste crushing device includes: a rectangular crushing box, a dust collection box disposed above the crushing box, a transition channel communicating with the dust collection box and inclined upwards, and a feed hopper disposed above the transition channel. A booster pump is disposed above the dust collection box, and a water inlet pipe is connected to one side of the booster pump. The booster pump is connected to a dust collection plate inside the dust collection box, and the dust collection plate is provided with several nozzles for spraying water mist. A crushing assembly is disposed in the middle of the crushing box for crushing materials. A screen plate is inclinedly disposed below the crushing assembly. A cylindrical lifting channel is provided on the side. The lower part of the lifting channel is connected to the crushing box through a feeding channel, and the upper part of the lifting channel is connected to the crushing box through a discharge channel. A screw shaft is rotatably connected to the middle of the lifting channel. The upper part of the screw shaft extends to the outside of the lifting channel and cooperates with the output shaft of the lifting motor. The connection position between the feeding channel and the crushing box is in cooperation with the screen plate. The feeding channel is used to guide the material screened by the screen plate into the lifting channel. The connection position between the discharge channel and the crushing box is located above the crushing component. The discharge channel is used to guide the material lifted by the screw shaft into the crushing box.

[0008] Furthermore, the crushing assembly includes: a drive roller and a driven roller rotatably connected to the front and rear side walls of the crushing box. The drive roller and the driven roller are set at the same height and are both perpendicular to the front and rear side walls of the crushing box. Several crushing blades are evenly spaced on the drive roller and the driven roller. The crushing blades on the drive roller and the driven roller are staggered. Transmission gears are respectively set on the same side of the drive roller and the driven roller extending to the outside of the crushing box. The two transmission gears mesh with each other. A driven pulley is set on the other side of the drive roller extending to the outside of the crushing box. A crushing motor is set on the left side wall of the crushing box. A drive pulley is set on the output shaft of the crushing motor. The drive pulley and the driven pulley are driven by a belt.

[0009] Furthermore, dustproof curtains are provided at the upper and lower parts of the inner cavity of the transition channel. The dustproof curtains further include: a rotating shaft and dustproof blades. The rotating shaft is perpendicular to the front and rear side walls of the transition channel. Several dustproof blades are rotatably connected to the rotating shaft. The several dustproof blades overlap and fill the inner cavity of the transition channel.

[0010] Furthermore, support plates are provided on both the left and right side walls inside the crushing box, and several support columns are vertically arranged on the support plates. The screen plate is sleeved on the support columns, and springs are sleeved on the support columns. The springs are located between the screen plate and the support plates. The upper end of each support column is threaded with a limit nut. The limit nut is used to prevent the screen plate from falling off the support column. A vibration motor is provided at the lower part of the screen plate.

[0011] Furthermore, buffer plates are inclinedly arranged on the left and right side walls of the inner cavity of the crushing box. The buffer plates are located between the crushing components and the discharge channel and the crushing box. The buffer plates are used to guide the material to fall between the driving roller and the driven roller.

[0012] Furthermore, a conical discharge hopper is provided at the bottom of the crushing box.

[0013] Furthermore, four support feet are provided at the four corners of the lower part of the crushing box.

[0014] Furthermore, the nozzles are arranged in a rectangular array on the dust removal plate.

[0015] Compared with the prior art, the present invention has the following technical effects:

[0016] 1. The construction waste crushing device of this utility model sprays water mist above the crushing components through the cooperation of dust removal plates, nozzles and external booster pumps in the dust removal box, which can effectively reduce the smoke and dust generated during the crushing process and prevent the smoke and dust from spreading and affecting the workers. The crushing device is also equipped with a screen plate and a lifting channel, which can transport construction waste that does not meet the size requirements after crushing back to the crushing components for repeated crushing. It does not require the setting of multiple crushing components, can effectively ensure the output size of the crushed construction waste and reduce the size of the equipment.

[0017] 2. The construction waste crushing device of this utility model, through the dustproof curtain set inside the transition channel, can buffer the material when it enters the transition channel, and the dust generated during the material movement can also be blocked by the dustproof curtain, further reducing the dust generated during the entire crushing process; the dustproof curtain is composed of several dustproof blades rotatably set on the rotating shaft, and an appropriate number of dustproof blades can be opened according to the amount of material entering the transition channel, and after the material passes through, the dustproof blades automatically return to the closed state under the action of gravity, without the need for additional devices, which is very flexible and convenient.

[0018] 3. The construction waste crushing device of this utility model has a screen plate sleeved on the support column of a support plate, and a spring sleeved on the support column. The spring is located between the screen plate and the support plate, and a vibration motor is installed at the lower part of the screen plate. The vibration of the vibration motor can accelerate the screening of the crushed material by the screen plate, improve the screening efficiency, and prevent the crushed material from accumulating on the screen plate, which would affect the entire crushing process. Furthermore, through the spring between the screen plate and the support plate, the screen plate can be movably sleeved on the support column, which can fully transmit the vibration generated by the vibration motor, further accelerating the screening of the crushed material by the screen plate. Attached Figure Description

[0019] Figure 1 This is an isometric view of a construction waste crushing device according to the present invention;

[0020] Figure 2 This is a rear view of a construction waste crushing device according to the present invention;

[0021] Figure 3 This is a side view of a construction waste crushing device according to the present invention;

[0022] Figure 4 This is a cross-sectional view of a construction waste crushing device according to the present invention;

[0023] Figure 5 This is a schematic diagram of the dust collector box of a construction waste crushing device according to the present invention;

[0024] Figure 6 This is a schematic diagram of the screen plate of a construction waste crushing device according to the present invention;

[0025] Figure 7 This is a schematic diagram of the crushing component of a construction waste crushing device according to the present invention.

[0026] In the diagram: 1. Feed hopper; 2. Transition channel; 3. Dust collector; 4. Crushing box; 5. Crushing motor; 6. Driven roller; 7. Driven roller; 8. Booster pump; 9. Water inlet pipe; 10. Driven pulley; 11. Belt; 12. Driven pulley; 13. Discharge hopper; 14. Support leg; 15. Feed channel; 16. Lifting channel; 17. Lifting motor; 18. Discharge channel; 19. Transmission gear; 20. Spiral shaft; 21. Dustproof curtain; 211. Rotating shaft; 212. Dustproof blade; 22. Dust collector plate; 23. Nozzle; 24. Buffer plate; 25. Crushing blade; 26. Screen plate; 27. Support plate; 28. Support column; 29. ​​Vibration motor; 30. Spring; 31. Limit nut. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0028] like Figure 1-4 As shown, a construction waste crushing device includes: a rectangular crushing box 4, a dust collection box 3 disposed above the crushing box 4, a transition channel 2 connected to the dust collection box 3 and inclined upwards, and a feed hopper 1 disposed above the transition channel 2. A booster pump 8 is disposed above the dust collection box 3, and a water inlet pipe 9 is connected to one side of the booster pump 8. The booster pump 8 is connected to a dust collection plate 22 inside the dust collection box 3. Several nozzles 23 are disposed on the dust collection plate 22 for spraying water mist. A crushing component is disposed in the middle of the crushing box 4 for crushing materials. A screen plate 26 is inclinedly disposed below the crushing component. A cylindrical part is disposed on one side of the crushing box 4. The lifting channel 16 is shaped like a feed channel 15, and its lower part is connected to the crushing box 4 via the feed channel 15. The upper part of the lifting channel 16 is connected to the crushing box 4 via the discharge channel 18. A spiral shaft 20 is rotatably connected to the middle of the lifting channel 16. The upper part of the spiral shaft 20 extends to the outside of the lifting channel 16 and cooperates with the output shaft of the lifting motor 17. The feed channel 15 is connected to the crushing box 4 at a position that cooperates with the screen plate 26. The feed channel 15 is used to guide the material screened by the screen plate 26 into the lifting channel 16. The discharge channel 18 is connected to the crushing box 4 at a position above the crushing assembly. The discharge channel 18 is used to guide the material lifted by the spiral shaft 20 into the crushing box 4.

[0029] like Figure 1-4 and Figure 7 As shown, the crushing assembly includes: a drive roller 6 and a driven roller 7 rotatably connected to the front and rear side walls of the crushing box 4. The drive roller 6 and the driven roller 7 are set at the same height and are both perpendicular to the front and rear side walls of the crushing box 4. Several crushing blades 25 are evenly spaced on the drive roller 6 and the driven roller 7. The crushing blades 25 on the drive roller 6 and the driven roller 7 are staggered. On the same side of the drive roller 6 and the driven roller 7 extending to the outside of the crushing box 4, there are transmission gears 19 respectively. The two transmission gears 19 mesh with each other. On the other side of the drive roller 6 extending to the outside of the crushing box 4, there is a driven pulley 12. A crushing motor 5 is set on the left side wall of the crushing box 4. A drive pulley 10 is set on the output shaft of the crushing motor 5. The drive pulley 10 and the driven pulley 12 are driven by a belt 11.

[0030] like Figure 5As shown, dust curtains 21 are provided at the upper and lower parts of the inner cavity of the transition channel 2. The dust curtain 21 further includes a rotating shaft 211 and dust-proof blades 212. The rotating shaft 211 is perpendicular to the front and rear side walls of the transition channel 2. Several dust-proof blades 212 are rotatably connected to the rotating shaft 211. The several dust-proof blades 212 overlap and fill the inner cavity of the transition channel 2.

[0031] like Figure 4 and Figure 6 As shown, support plates 27 are provided on both the left and right side walls inside the crushing box 4. Several support columns 28 are vertically arranged on the support plates 27. The screen plate 26 is sleeved on the support columns 28. Springs 30 are sleeved on each support column 28. The springs 30 are located between the screen plate 26 and the support plate 27. The upper end of each support column 28 is threaded with a limit nut 31. The limit nut 31 is used to prevent the screen plate 26 from falling off the support column 28. A vibration motor 29 is provided at the lower part of the screen plate 26.

[0032] like Figure 4 As shown, buffer plates 24 are inclinedly arranged on the left and right side walls of the inner cavity of the crushing box 4. The buffer plates 24 are located between the crushing components and the discharge channel 18 and the crushing box 4. The buffer plates 24 are used to guide the material to fall between the driving roller 6 and the driven roller 7.

[0033] like Figure 1 As shown, a conical discharge hopper 13 is provided at the lower part of the crushing box 4.

[0034] like Figure 1 As shown, the crushing box 4 has four supporting feet 14 at its lower corners.

[0035] like Figure 5 As shown, the nozzles 23 are distributed in a rectangular array on the dust removal plate 22.

[0036] Working principle: The staff pours the construction waste into the feed hopper 1. The construction waste passes through the transition channel 2 and the dust removal box 3 in sequence, and then enters the crushing box 4 for crushing.

[0037] The dustproof curtain 21 installed inside the transition channel 2 is pushed open by the construction waste when it passes through, and automatically resets under the action of gravity after the construction waste passes through. It can buffer the construction waste and block some of the smoke and dust generated during the transportation of construction waste.

[0038] A booster pump 8 is installed above the dust collection box 3. A dust collection plate 22 is installed inside the dust collection box 3. A nozzle 23 is installed on the dust collection plate 22. A water inlet pipe 9 is installed on one side of the booster pump 8. Clean water enters the booster pump 8 through the water inlet pipe 9. The booster pump 8 pressurizes the clean water and delivers it to the dust collection plate 22. The clean water is then sprayed through the nozzle 23 on the dust collection plate 22 to form a water mist. The water mist is used to reduce the smoke and dust generated during the crushing of construction waste.

[0039] After the construction waste enters the crushing box 4, it falls between the drive roller 6 and the driven roller 7 under the guidance of the buffer plate 24. Both the drive roller 6 and the driven roller 7 are equipped with several crushing blades 25, and the crushing blades 25 on the two rollers are interlaced. The drive roller 6 rotates clockwise under the drive of the crushing motor 5. The rear sides of the drive roller 6 and the driven roller 7 are driven by the meshing of the transmission gear 19, so the driven roller 7 rotates counterclockwise. Therefore, the crushing blades 25 on the two rollers cooperate with each other to crush the construction waste.

[0040] The crushed construction waste falls onto the screen plate 26 below the crushing assembly. The screen plate 26 vibrates continuously under the drive of the vibrating motor 29, thereby accelerating the screening of the crushed material above the screen plate 26. The construction waste that passes through the screen falls into the cone-shaped discharge hopper 13 located below the crushing box 4 and is discharged. The construction waste that does not pass through the screen enters the lifting channel 16 through the feeding channel 15. The lifting channel 16 is rotatably connected to a screw shaft 20. The screw shaft is driven to rotate by the lifting motor 17. After entering the lifting channel 16, the construction waste rises under the drive of the screw shaft 20 and re-enters the upper part of the crushing box 4 through the discharge channel 18. Then, under the guidance of the buffer plate 24, it falls back between the active roller 6 and the driven roller 7 for crushing until it passes through the screen plate 26.

[0041] The screen plate 26 is sleeved on the support plate 27 on both sides of the crushing box 4 and the support column 28 is provided. The support column 28 is also sleeved with a spring 30. The spring 30 is located between the screen plate 26 and the support plate 27, so that the screen plate 26 can vibrate more significantly under the drive of the vibration motor, thereby improving the screening efficiency of the screen plate 26 and reducing the impact of the screen plate 26 vibration on the crushing box 4. The top of the support column 28 is also threaded with a limit nut 31 to prevent the screen plate 26 from falling off the support column 28.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A crushing device for construction waste, characterized in that, include: A rectangular crushing box (4), a dust removal box (3) set above the crushing box (4), a transition channel (2) connected to the dust removal box (3) and set at an upward angle, and a feed hopper (1) set above the transition channel (2); A booster pump (8) is installed above the dust collector (3). A water inlet pipe (9) is connected to one side of the booster pump (8). The booster pump (8) is connected to the dust collector plate (22) inside the dust collector (3). Several nozzles (23) are installed on the dust collector plate (22). The nozzles (23) are used to spray water mist. A crushing component is installed in the middle of the crushing box (4). The crushing component is used to crush materials. A screen plate (26) is installed at an incline below the crushing component. A cylindrical lifting channel (16) is installed on one side of the crushing box (4). The lower part of the lifting channel (16) is connected to the crushing box (4) through the feeding channel (15). The upper part is connected to the crushing box (4) through the discharge channel (18). The middle part of the lifting channel (16) is rotatably connected to the spiral shaft (20). The upper part of the spiral shaft (20) extends to the outside of the lifting channel (16) and cooperates with the output shaft of the lifting motor (17). The feed channel (15) is connected to the crushing box (4) and cooperates with the screen plate (26). The feed channel (15) is used to guide the material screened by the screen plate (26) into the lifting channel (16). The discharge channel (18) is connected to the crushing box (4) above the crushing component. The discharge channel (18) is used to guide the material lifted by the spiral shaft (20) into the crushing box (4).

2. The construction waste crushing device according to claim 1, characterized in that, The crushing assembly includes: an active roller (6) and a driven roller (7) rotatably connected to the front and rear side walls of the crushing box (4). The active roller (6) and the driven roller (7) are set at the same height and are both perpendicular to the front and rear side walls of the crushing box (4). Several crushing blades (25) are evenly spaced on the active roller (6) and the driven roller (7). The crushing blades (25) on the active roller (6) and the driven roller (7) are staggered. On the same side of the active roller (6) and the driven roller (7) extending to the outside of the crushing box (4), transmission gears (19) are respectively provided. The two transmission gears (19) mesh with each other. On the other side of the active roller (6) extending to the outside of the crushing box (4), a driven pulley (12) is provided. A crushing motor (5) is provided on the left side wall of the crushing box (4). An active pulley (10) is provided on the output shaft of the crushing motor (5). The active pulley (10) and the driven pulley (12) are driven by a belt (11).

3. The construction waste crushing device according to claim 2, characterized in that, Dustproof curtains (21) are provided at the upper and lower parts of the inner cavity of the transition channel (2). The dustproof curtain (21) further includes a rotating shaft (211) and dustproof blades (212). The rotating shaft (211) is perpendicular to the front and rear side walls of the transition channel (2). Several dustproof blades (212) are rotatably connected to the rotating shaft (211). The several dustproof blades (212) overlap and fill the inner cavity of the transition channel (2).

4. The construction waste crushing device according to claim 3, characterized in that, The crushing box (4) is provided with support plates (27) on both the left and right side walls. Several support columns (28) are vertically arranged on the support plates (27). The screen plate (26) is sleeved on the support columns (28). Springs (30) are sleeved on the support columns (28). The springs (30) are located between the screen plate (26) and the support plate (27). The upper end of the support column (28) is threaded with a limit nut (31). The limit nut (31) is used to prevent the screen plate (26) from falling off the support column (28). A vibration motor (29) is provided at the lower part of the screen plate (26).

5. The construction waste crushing device according to claim 4, characterized in that, The left and right side walls of the inner cavity of the crushing box (4) are respectively inclinedly provided with buffer plates (24). The buffer plates (24) are located between the crushing components and the discharge channel (18) and the crushing box (4). The buffer plates (24) are used to guide the material to fall between the active roller (6) and the driven roller (7).

6. The construction waste crushing device according to claim 5, characterized in that, The lower part of the crushing box (4) is provided with a conical discharge hopper (13).

7. A construction waste crushing device according to claim 6, characterized in that, The crushing box (4) is provided with four support feet (14) at the four corners of its lower part.

8. The construction waste crushing device according to claim 7, characterized in that, The nozzles (23) are arranged in a rectangular array on the dust removal plate (22).

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