Construction waste crushing device

Abstract

The utility model discloses a construction waste crushing device, and relates to the technical field of construction waste treatment equipment. The device structurally comprises a first crushing box, a second crushing box communicating with the bottom of the first crushing box and a screening box communicating with the bottom of the second crushing box, the upper side wall of the first crushing box communicates with a feeding port, supporting leg frames are fixedly connected to the two sides of the bottom of the screening box correspondingly, and crushing mechanisms are arranged in the first crushing box and the second crushing box correspondingly; one side of the first crushing box and one side of the second crushing box are fixedly connected with a synchronous driving mechanism, and the two ends of the synchronous driving mechanism are fixedly connected with the two crushing mechanisms correspondingly. By arranging the material returning mechanism, large-particle construction waste at the screening position is returned to the feeding opening to be crushed again, the recycling treatment efficiency of the screened construction waste is higher, the screened construction waste can be treated again, and the crushing treatment effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction waste treatment equipment, and particularly relates to a construction waste crushing device. Background Technique

[0002] At present, some construction wastes cannot be directly used. Therefore, people reconstruct these waste bricks and stones to facilitate their reuse. When reusing construction waste, the original construction waste needs to be crushed.

[0003] In a Chinese patent for a construction waste crushing device (patent number: CN115301340A), the device includes a box body. A conveyor belt is installed inside the box body. A crushing box is arranged above the conveyor belt. A material guiding box is fixedly installed below the crushing box. A crushing device is arranged inside the crushing box. The crushing device includes crushing blades and crushing sawteeth. A metal box is arranged below one side of the box body. A pushing structure is arranged above the metal box. The pushing structure includes a scraping blade. A storage box is arranged below the other side of the box body. A sieve plate is arranged inside the storage box. Sliding structures are arranged on both sides of the sieve plate. A vibrating structure is arranged below the sieve plate inside the storage box. The vibrating structure includes a vibrating plate. Through the arrangement of the vibrating structure, the vibrating plate is pushed to vibrate up and down intermittently, and the vibrating is used to efficiently screen the construction waste on the sieve plate, improving the screening efficiency. However, the recycling of the larger pieces of construction waste separated by the device is relatively troublesome, affecting the recycling and treatment efficiency of construction waste, and there is no subsequent reprocessing of it, resulting in insufficient crushing and treatment of construction waste. Content of the Utility Model

[0004] The purpose of the utility model is to provide a construction waste crushing device. By setting a vibrating screen and a material return mechanism, it realizes the function of conveying the large-particle construction waste falling into the material return cylinder upward, guiding it into the feed port through the material return opening for re-crushing and processing, having a faster recycling and treatment efficiency for the separated construction waste, and being able to reprocess it to improve the crushing and processing effect.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model relates to a construction waste crushing device, which comprises a first crushing box, a second crushing box communicated with the bottom of the first crushing box, and a screening box communicated with the bottom of the second crushing box. The upper side wall of the first crushing box is communicated with a feeding port. Both sides of the bottom of the screening box are fixedly connected with supporting leg frames. Crushing mechanisms are arranged in both the first crushing box and the second crushing box. One side of the first crushing box and the second crushing box is fixedly connected with a synchronous driving mechanism. The two ends of the synchronous driving mechanism are respectively fixedly connected with the two crushing mechanisms. An inclined vibrating screen is installed in the screening box. The bottom of the screening box is communicated with a discharge port. One side of the screening box at the lower end of the vibrating screen is communicated with a material returning mechanism. One end of the material returning mechanism is communicated with the feeding port. The rear side walls of the first crushing box and the second crushing box are communicated with a dust removal mechanism. The material returning mechanism comprises a material guiding port communicated with the screening box. One end of the material guiding port is communicated with a vertically arranged material returning cylinder. The upper end of the material returning cylinder is fixedly connected with a first motor. The main shaft end of the first motor penetrates into the material returning cylinder and is fixedly connected with a spiral feeding rod. One side of the material returning cylinder is communicated with a material returning port. One end of the material returning port is communicated with the feeding port.

[0007] As a preferred technical solution of the utility model, the synchronous driving mechanism comprises a housing fixed on one side of the first crushing box and the second crushing box. A second motor is fixedly connected to one side of the housing. One end of each of the two crushing mechanisms is fixedly connected with a transmission wheel. The two transmission wheels are connected by a transmission belt. The main shaft end of the second motor is fixedly connected with one of the transmission wheels.

[0008] As a preferred technical solution of the utility model, the crushing mechanism comprises two rotating pins inserted into and rotatably connected to the side wall of the first crushing box. One end of each of the two rotating pins is fixedly connected with a crushing roller. The other ends of the two rotating pins are fixedly connected with two meshing circular gears. One end of one of the rotating pins is fixedly connected with the transmission wheel.

[0009] As a preferred technical solution of the utility model, the distance between the two crushing rollers in the first crushing box is greater than the distance between the two crushing rollers in the second crushing box.

[0010] As a preferred technical solution of the utility model, the dust removal mechanism comprises two dust guiding net ports respectively communicated with the rear side walls of the first crushing box and the second crushing box. One end of each of the two dust guiding net ports is communicated with a dust guiding pipe. An induced draft fan is arranged on the dust guiding pipe. The lower end of the dust guiding pipe is communicated with a dust collecting net box.

[0011] As a preferred technical solution of the utility model, a control switch is fixedly connected to the front side wall of the first crushing box. The control switch is electrically connected to the synchronous driving mechanism, the vibrating screen, the material returning mechanism and the dust removal mechanism respectively.

[0012] As a preferred technical solution of the present utility model, guide plates are fixedly connected to the inner walls on both sides of the first crushing box and the second crushing box.

[0013] The present utility model has the following beneficial effects:

[0014] 1. By setting a vibrating screen and a material return mechanism in the present utility model, the construction waste debris falls into the screening box. Through the filtering action of the vibrating screen, the construction waste with uniform and fine particles is discharged from the discharge port, while the large-particle construction waste at the screening part is introduced into the return cylinder through the guide port. Start the first motor to drive the spiral feeding rod to rotate, and the construction waste particles falling into the return cylinder can be conveyed upward and introduced into the feeding port through the return port for re-crushing processing. The recycling efficiency of the screened construction waste is faster, and it can be reprocessed to improve the crushing processing effect.

[0015] 2. By setting a synchronous drive mechanism and two crushing mechanisms in the present utility model, start the second motor. Since the two driving wheels are driven by a transmission belt, at this time, the two rotating pins rotate synchronously. Since the two groups of circular gears are engaged, at this time, the two groups of crushing rollers rotate simultaneously and engage, and the construction waste can be double-crushed, improving the crushing quality of the construction waste, with stable operation, and one motor drives the two crushing mechanisms to work, saving electricity and equipment investment costs.

[0016] 3. By setting a dust removal mechanism in the present utility model, start the induced draft fan to generate wind, and the dust generated in the first crushing box and the second crushing box can be sucked into the dust guide pipe through the two dust guide net openings, and gathered and stored in the dust collection net box to achieve the purpose of dust removal. Compared with the spraying method, this method saves water and is environmentally friendly, and does not wet the construction waste with water, facilitating subsequent processing.

[0017] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0020] Figure 2 It is a rear three-dimensional structural schematic diagram of the present utility model.

[0021] Figure 3 This is the front view sectional structure schematic diagram of the utility model.

[0022] Figure 4 This is the top view sectional structure schematic diagram of the first crushing box in the utility model.

[0023] Figure 5 This is the left view sectional structure schematic diagram of the first crushing box and the second crushing box in the utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1 - First crushing box, 2 - Second crushing box, 3 - Screening box, 4 - Feeding port, 5 - Leg support, 6 - Vibrating screen, 7 - Discharge port, 8 - Feeding guide port, 9 - Return material cylinder, 10 - First motor, 11 - Screw feeding rod, 12 - Return material port, 13 - Housing, 14 - Second motor, 15 - Driving wheel, 16 - Transmission belt, 17 - Rotating pin, 18 - Crushing roller, 19 - Circular gear, 20 - Dust guiding net opening, 21 - Dust guiding pipe, 22 - Induced draft fan, 23 - Dust collecting net box, 24 - Control switch, 25 - Feeding guide plate. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. Specific embodiment one:

[0028] Please refer to Figures 1-5As shown in the figure, the utility model relates to a construction waste crushing device, which comprises a first crushing box 1, a second crushing box 2 communicated with the bottom of the first crushing box 1, and a screening box 3 communicated with the bottom of the second crushing box 2. A feed inlet 4 is communicated with the upper side wall of the first crushing box 1. Leg supports 5 are fixedly connected to both sides of the bottom of the screening box 3. Crushing mechanisms are arranged in both the first crushing box 1 and the second crushing box 2. A synchronous driving mechanism is fixedly connected to one side of the first crushing box 1 and the second crushing box 2. The two ends of the synchronous driving mechanism are respectively fixedly connected to the two crushing mechanisms to perform double crushing processing on construction waste. An inclined vibrating screen 6 is installed in the screening box 3, which has a self-vibrating function and is a common device in this field. An outlet 7 is communicated with the bottom of the screening box 3 to discharge the crushed construction waste. A return material mechanism is communicated with one side of the screening box 3 at the lower end of the vibrating screen 6. One end of the return material mechanism is communicated with the feed inlet 4. Dust removal mechanisms are communicated with the rear side walls of the first crushing box 1 and the second crushing box 2 to return the large particle construction waste separated by screening to the feed inlet 4 for re-crushing processing, making the recycling and treatment efficiency of the screened construction waste faster and more convenient.

[0029] The return material mechanism includes a material guiding port 8 communicated with the screening box 3. One end of the material guiding port 8 is communicated with a vertically arranged return material cylinder 9. A first motor 10 is fixedly connected to the upper end of the return material cylinder 9. The main shaft end of the first motor 10 penetrates into the return material cylinder 9 and is fixedly connected with a spiral feeding rod 11. A return material port 12 is communicated with one side of the return material cylinder 9. One end of the return material port 12 is communicated with the feed inlet 4. Starting the first motor 10 to work drives the spiral feeding rod 11 to rotate, which can lift and convey the construction waste particles falling into the return material cylinder 9 and introduce them into the feed inlet 4 through the return material port 12.

[0030] A control switch 24 is fixedly connected to the front side wall of the first crushing box 1. The control switch 24 is electrically connected to the synchronous driving mechanism, the vibrating screen 6, the return material mechanism, and the dust removal mechanism respectively. Connecting to an external power supply, the related circuit is prior art and can be fully realized by those skilled in the art without further elaboration.

[0031] A specific application of this embodiment is as follows: Put the construction waste into the first crushing box 1 from the feed inlet 4. The construction waste is double-crushed by the crushing mechanisms in the first crushing box 1 and the second crushing box 2. Then, the construction waste debris falls into the screening box 3. Through the filtering action of the vibrating screen 6, the construction waste with uniform and fine particles is discharged from the outlet 7, while the large particle construction waste separated by screening is returned to the feed inlet 4 by the return material mechanism for re-crushing processing, making the recycling and treatment efficiency of the screened construction waste faster and more convenient. Specific Embodiment Two:

[0033] Based on the first specific embodiment, the difference in this embodiment is that the synchronous drive mechanism includes a housing 13 fixed to one side of the first crushing box 1 and the second crushing box 2. A second motor 14 is fixedly connected to one side of the housing 13. One end of each of the two crushing mechanisms is fixedly connected to a transmission wheel 15. The two transmission wheels 15 are connected by a transmission belt 16. The main shaft end of the second motor 14 is fixedly connected to one of the transmission wheels 15. One motor drives the two crushing mechanisms to work, saving electricity and equipment investment costs.

[0034] The crushing mechanism includes two rotating pins 17 inserted into and rotatably connected to the side wall of the first crushing box 1. One end of each of the two rotating pins 17 is fixedly connected to a crushing roller 18. The other ends of the two rotating pins 17 are fixedly connected to two meshing circular gears 19. One end of one of the rotating pins 17 is fixedly connected to the transmission wheel 15.

[0035] The distance between the two crushing rollers 18 in the first crushing box 1 is greater than the distance between the two crushing rollers 18 in the second crushing box 2, which can perform multi-stage crushing on construction waste and improve the crushing quality.

[0036] Guide plates 25 are fixedly connected to the inner walls on both sides of the first crushing box 1 and the second crushing box 2, facilitating the construction waste to fall between the two crushing rollers 18.

[0037] As Figures 1 to 5 shown, a specific application of this embodiment is: when using the device to crush and process construction waste, start the second motor 14. Since the two transmission wheels 15 are driven by the transmission belt 16, at this time, the two rotating pins 17 rotate synchronously. Since the two sets of circular gears 19 are meshed, at this time, the two sets of crushing rollers 18 rotate meshingly at the same time, which can perform double crushing on the construction waste, improve the crushing quality of the construction waste, and the work is stable. Specific Embodiment Three:

[0039] Based on the second specific embodiment, the difference in this embodiment is that the dust removal mechanism includes two dust guide net openings 20 respectively communicated with the rear side walls of the first crushing box 1 and the second crushing box 2. One end of each of the two dust guide net openings 20 is communicated with a dust guide pipe 21. An induced draft fan 22 is provided on the dust guide pipe 21. The lower end of the dust guide pipe 21 is communicated with a dust collection net box 23, a box body with a dust filter net, which can discharge air and intercept dust.

[0040] As Figure 2 、 Figure 4 and Figure 5As shown in the figure, a specific application of this embodiment is as follows: when the device processes construction waste by crushing, start the induced draft fan 22 to generate wind, which can suck the dust generated in the first crushing box 1 and the second crushing box 2 into the dust guide pipe 21 through two dust guide net openings 20, and gather in the dust collection net box 23 for storage, so as to achieve the purpose of dust removal. Compared with the spraying method, this method saves water and is environmentally friendly, and will not wet the construction waste with water, so as to facilitate subsequent treatment.

[0041] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A construction waste crushing device, characterized in that: The invention comprises a first crushing box (1), a second crushing box (2) connected to the bottom of the first crushing box (1), and a screening box (3) connected to the bottom of the second crushing box (2); the upper side wall of the first crushing box (1) is connected to a feed port (4); both sides of the bottom of the screening box (3) are fixedly connected to support legs (5); the first crushing box (1) and the second crushing box (2) are provided with a crushing mechanism; one side of the first crushing box (1) and the second crushing box (2) is fixedly connected to a synchronous drive mechanism; the two ends of the synchronous drive mechanism are respectively fixedly connected to the two crushing mechanisms; the screening box (3) is installed with an inclined vibrating screen (6); the bottom of the screening box (3) is connected to a discharge port (7); one side of the screening box (3) located at the lower end of the vibrating screen (6) is connected to a return mechanism; one end of the return mechanism is connected to the feed port (4); the rear side walls of the first crushing box (1) and the second crushing box (2) are connected to a dust removal mechanism; The material return mechanism comprises a material guide port (8) connected to the screening box (3); one end of the material guide port (8) is connected to a vertically arranged material return cylinder (9); the upper end of the material return cylinder (9) is fixedly connected to a first motor (10); the main shaft end of the first motor (10) passes through the material return cylinder (9) and is fixedly connected to a spiral feeding rod (11); one side of the material return cylinder (9) is connected to a material return port (12); one end of the material return port (12) is connected to a material feed port (4).

2. A construction waste crushing device according to claim 1, characterized in that: The synchronous drive mechanism comprises a cover (13) fixed to one side of the first crushing box (1) and the second crushing box (2); a second motor (14) is fixedly connected to one side of the cover (13); one end of each of the two crushing mechanisms is fixedly connected to a transmission wheel (15); the two transmission wheels (15) are connected in transmission via a transmission belt (16); and a main shaft end of the second motor (14) is fixedly connected to one of the transmission wheels (15).

3. A construction waste crushing device according to claim 1 or 2, characterized in that: The crushing mechanism comprises two rotating pins (17) inserted into the side wall of the first crushing box (1) and rotatably connected thereto, one end of each of the two rotating pins (17) being fixedly connected to a crushing roller (18), and the other ends of the two rotating pins (17) being fixedly connected to two meshing circular gears (19), one end of one of the rotating pins (17) being fixedly connected to a transmission wheel (15).

4. A construction waste crushing device according to claim 3, characterized in that: The distance between the two crushing rollers (18) located in the first crushing box (1) is greater than the distance between the two crushing rollers (18) located in the second crushing box (2).

5. The construction waste crushing device according to claim 1, characterized in that: The dust removal mechanism comprises two dust guide mesh openings (20) respectively connected to the rear side walls of the first crushing box (1) and the second crushing box (2); one end of the two dust guide mesh openings (20) is connected to a dust guide pipe (21); an induced draft fan (22) is provided on the dust guide pipe (21); and the lower end of the dust guide pipe (21) is connected to a dust collecting mesh box (23).

6. The construction waste crushing device according to claim 1, characterized in that: A control switch (24) is fixedly connected to the front side wall of the first crushing box (1), and the control switch (24) is electrically connected to the synchronous drive mechanism, the vibrating screen (6), the material return mechanism and the dust removal mechanism respectively.

7. The construction waste crushing device according to claim 1, characterized in that: Material guide plates (25) are fixedly connected to the inner walls on both sides of the first crushing box (1) and the second crushing box (2).

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