Construction waste crushing device

Abstract

The utility model relates to garbage crushing technical field, specifically is a kind of construction waste crushing device.The utility model sets up in feed tank, and the anti-overflow dust component is composed of multiple baffle, and baffle is supported by torsion spring below, so that baffle can keep the state of closing feed inlet, when construction waste is put into feed tank from feed inlet, the baffle contacted by construction waste is pressed to swing, so that construction waste passes feed tank and enters crushing tank smoothly, the baffle not contacted by construction waste keeps still under the support of torsion spring, under the premise of not affecting construction waste to enter feed tank, the feeding area of feed inlet of feed tank can be maximized to reduce, thereby, dust overflow when crushing is minimized.

Description

Technical Field

[0001] This utility model relates to the field of waste crushing technology, specifically a construction waste crushing device. Background Technology

[0002] With the acceleration of urbanization and the rapid development of the construction industry, construction waste has gradually increased, with concrete and brick construction waste being the most abundant. Currently, the most common treatment method is to put the construction waste into a crusher to crush it. The crushed slag, aggregates, etc. can be reused, which is relatively environmentally friendly.

[0003] A utility model patent with publication number CN216440741U and application date of October 28, 2021, discloses a construction waste crushing device, including a base, a collection box, a crushing box, and a crushing chamber. This device effectively solves the problems of uneven crushing of construction waste and the inability to promptly discharge the crushed waste, leading to clogging of the device. However, the above-mentioned technical solution generates a large amount of dust during crushing. Because the feed inlet is an open structure, dust will drift from the feed inlet to the outside of the device, generating a large amount of dust, polluting the surrounding environment, and harming the health of the operators. Summary of the Invention

[0004] The present invention aims to solve the dust problem of the above-mentioned crusher, thereby providing a crushing device that can significantly reduce dust generated during crushing.

[0005] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0006] A construction waste crushing device includes a crusher housing, a dust prevention component, and a crushing component. The crusher housing includes a feed box and a crushing box. The feed box has a feed inlet at its upper end. The dust prevention component is installed inside the feed box below the feed inlet. The feed box is connected to the crushing box. The crushing box has a discharge outlet at its lower end. The crushing component is installed inside the crushing box and includes two counter-rotating crushing rollers for crushing the construction waste entering the crushing box.

[0007] The dust prevention assembly includes two baffle assemblies. The outer ends of the two baffle assemblies are rotatably connected to the inner walls on both sides of the feed box. The baffle assembly includes several side-by-side baffles. The outer ends of the baffles are rotatably connected to the inner walls of the feed box through torsion springs. When the torsion springs are in their natural state, the baffles on both sides are in a horizontal position and their inner ends are in contact to close the feed inlet of the feed box.

[0008] Compared with the prior art, the advantages of this utility model, which adopts the above technical solution, are as follows:

[0009] This invention incorporates a dust-prevention component within the feed hopper, consisting of multiple baffles. The outer ends of the baffles are connected to the inner wall of the feed hopper via torsion springs, ensuring the baffles remain horizontal and closed when not subjected to external force. When construction waste is fed into the feed hopper, the baffles in contact with the waste are pressed and sway, allowing the waste to pass smoothly through the feed hopper into the crushing chamber. The baffles not in contact with the waste remain stationary under the support of the torsion springs. This design minimizes the feeding area of ​​the feed hopper's inlet without hindering the entry of construction waste into the feed hopper, thereby reducing dust spillage during crushing.

[0010] As a preferred embodiment, a further technical solution of this utility model is:

[0011] The front ends of the two crushing rollers are connected to drive motors, which drive the crushing rollers to rotate through the output shaft of the drive motors.

[0012] The front and rear side walls of the feed box are provided with cleaning ports and fixing slots. A cover plate is detachably installed on the outside of the cleaning port. The cleaning port and fixing slot on the same side are connected. The rear and front ends of the two crushing rollers are respectively connected to fixing plates via bearings. The front and rear fixing plates are connected to the fixing slots on the front and rear side walls of the feed box, respectively, and the fixing plates cover the fixing slots. The size of the cleaning port is larger than the size of the fixing plate, so that the fixing plate and the crushing roller can be removed from the crushing box through the cleaning port. With this structure, when there is a lot of debris on the crushing roller or the roller teeth are damaged and the crushing roller needs to be replaced, it is easy to quickly disassemble the crushing roller.

[0013] Keyways are provided on the inner walls of the two crushing rollers, and a connecting key is fixed on the output shaft of the drive motor. When the output shaft of the drive motor is inserted into the rollers, the connecting key engages with the keyway. Through the engagement of the connecting key and the keyway, the output shaft of the drive motor can stably drive the crushing rollers to rotate.

[0014] The bottom of the feed box is equipped with a discharge ramp, which is located below the two crushing rollers and extends to the discharge port. The construction waste particles crushed by the crushing rollers slide down the discharge ramp to the discharge port for easy unloading.

[0015] The inner walls of the feed boxes on both sides of the feeding ramp are provided with sliding grooves, in which pull rods are slidably installed. A scraper is connected between the inner ends of the two pull rods, and the bottom surface of the scraper abuts against the feeding ramp. When there are many particles accumulating on the feeding ramp, affecting the feeding effect, the outer pull rods are used to drive the scraper to scrape the particles off the feeding ramp, thus assisting the feeding process. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of an embodiment of this application;

[0017] Figure 2This is a rear view of the structure according to an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the internal structure of the crushing box according to an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the dust prevention component structure according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the baffle swing state according to an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the crushing roller being removed according to an embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the crushing roller and its front and rear end structures according to an embodiment of this application;

[0023] Figure 8 This is a schematic diagram of the crushing box structure according to an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the scraper cleaning state according to an embodiment of this application;

[0025] In the diagram: 1. Feed box; 11. Guide plate; 12. Baffle; 13. Fixing rod; 14. Torsion spring; 2. Crushing box; 21. Discharge port; 22. Cleaning port; 23. Fixing groove; 24. Discharge ramp; 25. Scraper; 26. Sliding groove; 27. Tie rod; 3. Cover plate; 4. Fixing plate; 5. Motor housing; 51. Drive motor; 52. Connecting key; 6. Bolt; 7. Crushing roller; 71. Bearing; 72. Keyway. Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0027] Reference Figure 1-9This application discloses a construction waste crushing device, including a crusher shell, a dust prevention component, and a crushing component. The crusher shell includes a feed box 1 and a crushing box 2. The feed box 1 has a feed inlet at its upper end. The dust prevention component is installed inside the feed box 1 below the feed inlet. The lower end of the feed box 1 is connected to the crushing box 2. The lower end of the crushing box 2 has a discharge outlet 21. The crushing component is installed inside the crushing box 2 and includes two counter-rotating crushing rollers 7 for crushing the construction waste entering the crushing box 2. Guide plates 11 are provided on both sides of the bottom end of the feed box 1. The lower ends of the guide plates 11 are inclined inward. The lower ends of the two guide plates 11 correspond to the middle position of the two crushing rollers 7, so that after the construction waste enters the feed box 1 through the dust prevention component, it is guided by the guide plates 11 and falls to the middle position of the two crushing rollers 7, thereby improving the crushing efficiency.

[0028] The dust prevention assembly includes two baffle assemblies. The outer ends of the two baffle assemblies are rotatably connected to the inner walls on both sides of the feed box 1. Specifically, fixing rods 13 are fixed on the left and right inner walls at the middle position of the feed box 1. The baffle assembly includes several baffles 12 that are attached side by side. The number and size of the baffles 12 on the left and right sides are the same. The outer end of the baffle 12 is provided with a rotating hole with a diameter larger than that of the fixing rod 13. The outer end of the baffle 12 is movably sleeved on the corresponding fixing rod 13 on the same side through the rotating hole. Above, a torsion spring 14 is also inserted into the rotating hole of each baffle 12. The torsion spring 14 is coaxially arranged with the rotating hole. One end of the torsion spring 14 is fixed to the inner wall of the rotating hole of the baffle 12. The torsion spring 14 is sleeved on the fixing rod 13, and the other end of the torsion spring 14 is fixed to the fixing rod 13, so that the inner end of the baffle 12 can rotate around the axis of the fixing rod 13. When the torsion spring 14 is in the natural state, each baffle 12 is in the horizontal state, and the inner end faces of the baffles 12 on both sides are in contact to close the feed port of the feed box 1.

[0029] In this embodiment, the feed box 1 is configured as a rectangular cylindrical structure with a length and width of 1000mm. Ten baffles 12 are provided on both the left and right sides. The length of each baffle 12 is set to 500mm and the width of each baffle 12 is set to 100mm. The baffles 12 are made of plates with a thickness of less than 10mm. When construction waste is put into the feed box 1, it squeezes the baffles 12. Under the downward swing force of the baffles 12, the torsion spring 14 deforms in time, causing the inner end of the baffles 12 to swing downward. When the torsion spring 14 is in its natural state, the baffles 12 return to a horizontal state under the restoring force of the torsion spring 14, thus sealing the feed inlet of the feed box 1. By setting multiple baffles 12 and torsion springs 14, any baffle 12 can swing synchronously to drive the torsion spring 14 connected to it to deform. When large-volume construction waste enters the feeding box 1, more baffles 12 are in contact. When small-volume construction waste enters the feeding box 1, fewer baffles 12 are in contact. The baffles 12 in contact with the construction waste swing downward, and the remaining baffles 12 can remain in a blocking state under the support of the torsion springs 14, so as to minimize the opening of the feeding port and reduce dust overflow. Preferably, the feeding box 1 is set as a detachable structure, for example, the front half and the rear half are fixed, so as to facilitate the disassembly, maintenance or replacement of the dust overflow prevention components in the feeding box 1.

[0030] In this embodiment, the front and rear side walls of the feed box 1 are provided with cleaning ports 22 and fixing grooves 23. The positions of the cleaning ports 22 and fixing grooves 23 on the front and rear side walls are respectively corresponding to each other. The groove height of the fixing groove 23 is greater than the outer diameter of the crushing roller 7. The cleaning port 22 is circular. A cover plate 3 is detachably connected to the outside of the cleaning port 22 by bolts 6. The cover plate 3 covers the outside of the cleaning port 22 to prevent dust from overflowing from the cleaning port 22. The cleaning ports 22 and fixing grooves 23 on the same side are connected. The rear and front ends of the two crushing rollers 7 are respectively fixedly sleeved with bearings 71. The front and rear ends of the crushing rollers 7 are fixedly inserted into the inner ring of the bearings 71. A fixing plate 4 is fixed to the outer ring of the bearings 71. Specifically, the crushing rollers 7 are... The outer ring of the bearing 71 at the rear end of the crushing roller 7 is welded and fixed to the inner wall of the rear fixing plate 4. A through hole is provided on the fixing plate 4 at the front end of the crushing roller 7. The diameter of the through hole is equal to the outer diameter of the outer ring of the bearing 71. The outer ring of the bearing 71 at the front end is fixedly engaged in the through hole of the front fixing plate 4. Threaded holes are provided at the upper and lower positions of the fixing grooves 23 at the front and rear ends. The fixing plates 4 at the front and rear ends are fixed to the fixing grooves 23 on the front and rear side walls of the feed box 1 respectively by bolts 6. When the cover plate 3 and the fixing plate 4 are fixed by bolts 6, the cover plate 3 and the fixing plate 4 close the cleaning port 22 and the fixing groove 23 to prevent dust overflow. The diameter of the cleaning port 22 is larger than the groove height of the fixing groove 23. The fixing plate 4 is set at the upper and lower ends. Both ends are arc-shaped with a diameter smaller than that of the cleaning opening 22, and the diameter of the cleaning opening 22 is slightly larger than the maximum height of the fixing plate 4. When the cover plate 3 and the fixing plate 4 are fixed to the cleaning opening 22 and the fixing groove 23 by bolts 6, the cover plate 3 and the fixing plate 4 cover the cleaning opening 22 and the fixing groove 23 to prevent dust from overflowing from here; the two fixing plates 4 at the front end are fixed with motor housings 5 ​​on their outer sides, and drive motors 51 are fixed in the motor housings 5. The outer diameter of the output shaft of the drive motor 51 is equal to the inner diameter of the crushing roller 7, and keyways 72 are opened on the inner walls of the two crushing rollers 7. A connecting key 52 is fixed on the output shaft of the drive motor 51, and the output shaft of the drive motor 51 is connected by the connecting key 52 and the keyway 72. When the output shaft of the drive motor 51 is inserted into the roller shaft, the connecting key 52 and the keyway 72 engage and abut, so that the output shaft of the drive motor 51 can stably drive the crushing roller 7 to rotate. When there are many impurities on the crushing roller 7 or the roller teeth are damaged and the crushing roller 7 needs to be replaced, stop the crushing operation, first unscrew the bolts 6 of the front and rear fixing plates 4 and the bolts 6 of the cover plate 3, and remove the front and rear cover plates 3. Then move the two crushing rollers 7, along with the front and rear bearings 71, fixing plates 4 and drive motor 51 connected to them, toward the cleaning port 22, and remove them together from the front cleaning port 22 or the rear cleaning port 22 for external replacement or cleaning, which facilitates quick disassembly of the crushing roller 7.

[0031] In this embodiment, a discharge ramp 24 is provided at the bottom of the feed box 1. The discharge ramp 24 is located below the two crushing rollers 7, and the bottom end of the discharge ramp 24 extends to the discharge port 21. The construction waste particles crushed by the crushing rollers 7 slide down the discharge ramp 24 to the discharge port 21 for easy discharge. Sliding grooves 26 are provided on the inner walls of the feed box 1 on both the front and rear sides of the discharge ramp 24. The bottom end of the sliding groove 26 extends to the outside of the discharge port 21. A pull rod 27 is slidably arranged in the sliding groove 26. A scraper 25 is connected between the inner ends of the two pull rods 27. The bottom surface of the scraper 25 abuts against the discharge ramp 24. During normal operation, the scraper 25 is located at the top of the discharge ramp 24, and the pull rods 27 are not pulled out. When there are many particles accumulating on the discharge ramp 24, affecting the discharge effect, two pull rods 27 are pulled outwards at the same time. The two pull rods 27 slide down based on the sliding groove 26, and drive the scraper 25 through the two pull rods 27 to scrape the particles on the discharge ramp 24 to the discharge port 21, thereby assisting the discharge.

[0032] This utility model sets up a dust-proof component in the feed box 1, and the dust-proof component consists of multiple baffles 12. The baffles 12 are supported by torsion springs 14, so that the baffles 12 can keep the feed inlet closed. When construction waste is put into the feed box 1 from the feed inlet, the baffles 12 that the construction waste contacts are pressed and swing downward, so that the construction waste can pass smoothly through the feed box 1 and enter the crushing box 2. The baffles 12 that do not contact the construction waste remain stationary under the support of the torsion springs 14. Without affecting the entry of construction waste into the feed box 1, the feeding area of ​​the feed inlet of the feed box 1 can be minimized, thereby minimizing dust overflow during crushing.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A construction waste crushing device, characterized in that: The device includes a crusher housing, a dust prevention component, and a crushing component. The crusher housing includes a feed box and a crushing box. The feed box has a feed inlet at its upper end. The dust prevention component is installed inside the feed box below the feed inlet. The feed box is connected to the crushing box. The crushing box has a discharge outlet at its lower end. The crushing component is installed inside the crushing box and includes two counter-rotating crushing rollers for crushing construction waste entering the crushing box. The dust prevention assembly includes two baffle assemblies. The outer ends of the two baffle assemblies are rotatably connected to the inner walls on both sides of the feed box. The baffle assembly includes several side-by-side baffles. The outer ends of the baffles are rotatably connected to the inner walls of the feed box through torsion springs. When the torsion springs are in their natural state, the baffles on both sides are in a horizontal position and their inner ends are in contact to close the feed inlet of the feed box.

2. The construction waste crushing device according to claim 1, characterized in that: The front ends of the two crushing rollers are connected to drive motors, which drive the crushing rollers to rotate through the output shaft of the drive motors.

3. The construction waste crushing device according to claim 1, characterized in that: The front and rear side walls of the feed box are provided with cleaning ports and fixing slots. A cover plate is detachably installed on the outside of the cleaning port. The cleaning port and fixing slot on the same side are connected. The rear and front ends of the two crushing rollers are respectively connected to fixing plates through bearings. The front and rear fixing plates are respectively connected to the fixing slots on the front and rear side walls of the feed box, and the fixing plates cover the fixing slots. The size of the cleaning port is larger than the size of the fixing plate so that the fixing plate and the crushing roller can be removed from the crushing box through the cleaning port.

4. The construction waste crushing device according to claim 2, characterized in that: The inner walls of the two crushing rollers are provided with keyways, and the output shaft of the drive motor is fixed with a connecting key. When the output shaft of the drive motor is inserted into the roller, the connecting key and the keyway are engaged and abutted.

5. The construction waste crushing device according to claim 1, characterized in that: The bottom of the feed box is equipped with a discharge ramp, which is located below the two crushing rollers and extends to the discharge port.

6. The construction waste crushing device according to claim 5, characterized in that: Sliding grooves are provided on the inner walls of the feed boxes on both sides of the feeding ramp. A pull rod is slidably installed in the sliding groove. A scraper is connected between the inner ends of the two pull rods, and the bottom surface of the scraper abuts against the feeding ramp.

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