Building waste crushing and screening device

Abstract

According to the building waste crushing and screening device, the threaded rod, the positioning groove, the positioning ring and the threaded ring are arranged, the threaded ring moves on the threaded rod in a reciprocating mode, the position of the positioning ring is not changed, the folding rod is bent along with movement of the threaded ring, and the folding rod and the connecting rod form the screen. Materials shoveled into the bucket are turned over through bending of the folding rod, so that muck and cement stones are screened. A crushing block is arranged to further crush the muck screened out by the moving screening mechanism; and the crushing blocks movably abut against the filter screen in the rotating process through the filter screen and the reinforcing ribs, so that the filter screen vibrates, and the muck is screened out of the bucket. By the adoption of the technical scheme, cement stones and muck are effectively separated through the screen composed of the folding rods and the connecting rods under the bending movement of the folding rods; bending motion screening is not simple vibration, so that the screening effect and efficiency are effectively improved; and the crushing block movably abuts against the filter screen, so that the muck is effectively crushed and filtered out.

Description

Technical Field

[0001] The utility model relates to the field of construction waste processing equipment, in particular to a construction waste crushing and screening device. Background Art

[0002] Construction waste refers to the slag, abandoned soil, abandoned materials, silt and other waste generated during the construction, laying, demolition and repair of various buildings, structures, pipelines, etc. by construction units or individuals.

[0003] Most construction waste from buildings and structures is collected centrally, crushed, and screened for reuse. Due to the high volume of construction waste produced, crushing and screening are often concentrated in large factories using extensive equipment. However, for excavated soil and stone materials generated during demolition and renovation, smaller crushing and screening equipment, such as screening buckets, is required. These crush and separate cement blocks from the waste, and the separated fine soil is then backfilled to minimize damage to pipelines. However, in practice, the screening bucket is often attached to the excavator's arm. After excavation, the material is screened by a rotating wheel within the bucket. The excavator's swing arm typically creates a sloshing motion within the hopper to accelerate screening. However, the soil excavated during pipeline repair often contains a high moisture content, resulting in poor crushing and screening efficiency. Even with this sloshing motion, the screening effect is often insignificant.

[0004] Chinese invention patent application number CN202311860265.4 discloses a construction waste recycling and cleaning machine for green engineering projects. The machine comprises a housing, a medium-fine crushing mechanism for crushing concrete blocks, and a screening mechanism for preliminary screening within the housing. A collecting hopper is fixedly connected to a second base and two first bases. A vibrating plate is movably connected between the first and second bases. A vibrating screen is slidably connected to the inside of the vibrating plate. An output pipe is inserted into the inside of the first base. The vibrating screen improves the screening efficiency of this cleaning machine to a certain extent, but the efficiency is still poor when the sludge is highly viscous. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the above-mentioned technology and propose a construction waste crushing and screening device, which aims to solve the problem of poor crushing and screening effect and low efficiency when the above-mentioned slag has a lot of moisture.

[0006] The utility model provides a construction waste crushing and screening device, comprising a bucket and a hanging shaft. The bucket is hollow, and a plurality of equidistantly arranged threaded rods are rotatably connected to the opening side of the bucket. The threaded rods are movably connected to a motion screening mechanism for screening cement blocks. A crushing mechanism for crushing slag is provided below the motion screening mechanism. The crushing mechanism is rotatably connected to the inner wall of the bucket, and a gap is set between the crushing mechanism and the motion screening mechanism. A screen mechanism elastically connected to the inner wall of the bucket is provided below the crushing mechanism, and the crushing mechanism and the screen mechanism are movably abutted.

[0007] Preferably, the motion screening mechanism includes a telescopic tube, a threaded ring, a positioning groove, a positioning ring, a support rod, and a folding rod. The telescopic tube is sleeved onto the threaded rod, one end of the telescopic tube is fixedly connected to the threaded ring, and the other end of the telescopic tube is fixedly connected to the positioning ring. The threaded rod has a positioning groove without threads, and the positioning ring is sleeved into the positioning groove. The threaded ring and the positioning ring are both fixedly connected to one end of the support rod. The threaded ring is threadedly connected to the threaded rod, and the other end of the support rod is hinged to the bending point of the folding rod. The two ends of the folding rod are hinged to the inner wall of the bucket. The bending points of multiple groups of folding rods are connected by a connecting rod, and the center point of the connecting rod is rotatably connected to the center of the bending point of the folding rod. By providing the threaded rod, positioning groove, positioning ring, and threaded ring, the threaded ring moves on the threaded rod, the positioning ring remains in position, and the folding rod bends as the threaded ring moves. The bending of the folding rod flips the material shoveled into the bucket, making the slag looser, thereby achieving the screening of slag and cement blocks.

[0008] Preferably, the crushing mechanism includes a rotating shaft and crushing blocks. Several rotating shafts are rotatably connected to the inner wall of the bucket, and several crushing blocks are fixedly connected to the rotating shafts, with the rotating shafts passing through the centers of the crushing blocks. The cross-section of the crushing blocks is a polygon with arc-shaped corners. A triangle is preferred in this application. The crushing blocks further crush the debris screened by the moving screening mechanism.

[0009] Preferably, the screen mechanism includes a filter, a telescopic rod, and reinforcing ribs. One end of the telescopic rod is fixedly connected to the edge of the bucket opening, and the other end of the telescopic rod is fixedly connected to the edge of the filter away from the crushing block. The reinforcing ribs are sleeved over the telescopic rod, allowing the filter to flexibly abut the crushing block. The filter is fixedly connected to the reinforcing ribs. By arranging the filter and reinforcing ribs, the crushing block flexibly abuts the filter during rotation, causing the filter to vibrate and filter the debris out of the bucket.

[0010] Preferably, the outer sleeve of the reinforcement rib is provided with a telescopic sleeve, and the two ends of the telescopic sleeve are fixedly connected to the edges of the filter screen and the bucket respectively.

[0011] Compared with the existing technology, it has the following beneficial effects:

[0012] The utility model provides a construction waste crushing and screening device, which is provided with a threaded rod, a positioning groove, a positioning ring and a threaded ring. The threaded ring moves on the threaded rod, and the positioning ring remains in a fixed position. The folding rod bends as the threaded ring moves. The folding rod and the connecting rod form a screen. The bending of the folding rod turns over the material shoveled into the bucket to achieve the screening of slag and cement blocks. The slag screened by the motion screening mechanism is further crushed by the provision of crushing blocks. The filter screen and the reinforcement ribs make the crushing blocks movably abut against the filter screen during the rotation process, causing the filter screen to vibrate and screen the slag out of the bucket. With the above technical solution, the screen composed of the folding rod and the connecting rod can effectively separate cement blocks and slag under the bending movement of the folding rod. The bending motion screening instead of simple vibration effectively improves the screening effect and efficiency. The crushing blocks and the filter screen movably abut, effectively crushing and filtering out the slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of a construction waste crushing and screening device according to the present invention;

[0015] Figure 2 This is a side sectional view of a construction waste crushing and screening device according to the present invention;

[0016] Figure 3 This is a schematic diagram of the motion screening mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of the telescopic tube and folding rod of the utility model;

[0018] Figure 5 This is a cross-sectional view of the telescopic tube and folding rod of the utility model;

[0019] Figure 6 This is a schematic diagram of the crushing mechanism of the utility model;

[0020] Figure 7 Schematic diagram of the screen mechanism of the present invention;

[0021] Figure 8 It is a partial enlarged schematic diagram of A of the present utility model.

[0022] In the figure, bucket 1; hanging shaft 11; threaded rod 2; screening mechanism 3; telescopic tube 31; threaded ring 32; positioning groove 33; positioning ring 34; support rod 35; folding rod 36; connecting rod 37; crushing mechanism 4; rotating shaft 41; crushing block 42; screening mechanism 5; filter screen 51; telescopic rod 52; spring 53; reinforcing rib 54; telescopic sleeve 55. DETAILED DESCRIPTION

[0023] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings:

[0024] Example:

[0025] like Figures 1 to 8 As shown, the present invention provides a construction waste crushing and screening device, comprising a bucket 1 and a hanging shaft 11. The bucket 1 is mounted on the excavator arm via the hanging shaft 11. The bucket 1 is hollow, i.e., both sides of the bucket 1 are open, with the side used for shoveling debris having a larger opening. The bucket 1 is rotatably connected to a plurality of equidistantly arranged threaded rods 2 on its open side. The threaded rods 2 are movably connected to a movable screening mechanism 3 for screening cement blocks. A crushing mechanism 4 for crushing debris is disposed below the movable screening mechanism 3. The crushing mechanism 4 is rotatably connected to the inner wall of the bucket 1, and a gap is provided between the crushing mechanism 4 and the movable screening mechanism 3. A screen mechanism 5 is elastically connected to the inner wall of the bucket 1 below the crushing mechanism 4. The crushing mechanism 4 and the screen mechanism 5 are movably abutted. During use, after the bucket 1 shovels debris into the bucket 1, the side of the bucket 1 used for shoveling debris is flipped upward via the excavating arm. The larger cement stones in the slag are screened out by the moving screening mechanism 3, and then the slag is further broken up by the crushing mechanism 4. Finally, the broken slag is discharged into the bucket 1 by the screening mechanism 5. The crushing mechanism 4 and the screening mechanism 5 are in movable contact with each other to cause the screening mechanism 5 to vibrate, thereby further improving the filtering efficiency.

[0026] As another example, Figures 1 to 5 As shown, the motion screening mechanism 3 of the present application includes a telescopic tube 31, a threaded ring 32, a positioning groove 33, a positioning ring 34, a support rod 35 and a folding rod 36. The telescopic tube 31 is sleeved on the outside of the threaded rod 2. One end of the telescopic tube 31 is fixedly connected to the threaded ring 32, and the other end of the telescopic tube 31 is fixedly connected to the positioning ring 34. The threaded rod 2 is provided with a positioning groove 33 without threads. The positioning ring 34 is sleeved in the positioning groove 33. The threaded ring 32 and the positioning ring 34 are both fixedly connected to one end of the support rod 35. The threaded ring 32 is threadedly connected to the threaded rod 2. The other end of the support rod 35 is hinged to the bending point of the folding rod 36. The two ends of the folding rod 36 are hinged to the inner wall of the bucket 1. The bending points of multiple groups of folding rods 36 are connected by a connecting rod 37. The center point of the connecting rod 37 is rotatably connected to the center of the bending point of the folding rod 36.

[0027] The positioning groove 33 is an annular groove formed on the threaded rod 2 and lacks internal threads. The positioning ring 34 is a ring with a T-shaped cross-section that is embedded within the annular groove and cannot move on the threaded rod 2. The threaded ring 32 slides along the threaded rod 2 as the threaded rod 2 rotates. The rotation of the threaded rod 2 is achieved by the forward and reverse motors. The rotation of multiple threaded rods 2 can be achieved by fixing one of the threaded rods 2 to the output end of the forward and reverse motor, with gears fixedly connected to the ends of the threaded rods 2. The rotation of multiple threaded rods 2 is achieved through the meshing of the gears. Alternatively, the output end of each threaded rod 2 can be fixedly connected to the output end of the forward and reverse motor. The forward and reverse motors are fixedly embedded in the walls on both sides of the bucket 1. Support rods 35 are fixedly connected to the positioning ring 34 and the threaded ring 32, and the support rods 35 point toward the side of the bucket 1 that shovels the soil. Each bending point of the folding rod 36 is hinged to each other, and each folding rod 36 has a bending point between two support rods 35. When the forward and reverse motors are turned on, the threaded rod 2 is driven to rotate back and forth by the forward and reverse motors, and the threaded ring 32 slides back and forth on the threaded rod 2. The distance between the threaded ring 32 and the positioning ring 34 becomes smaller or larger, thereby driving the bending amplitude of the folding rod 36 from small to large or from large to small, and then driving the connecting rod 37 to move. The bending of the folding rod 36 turns over the material shoveled into the bucket 1, making the slag looser, and the gap between the connecting rod 37 and the bending rod causes the slag to fall onto the crushing mechanism 4.

[0028] As another example, Figure 2 and Figure 6 As shown, the crushing mechanism 4 of the present application includes a rotating shaft 41 and crushing blocks 42. Several rotating shafts 41 are rotatably connected to the inner wall of the bucket 1, and several crushing blocks 42 are fixedly connected to the rotating shaft 41, and the rotating shaft 41 passes through the center of the crushing blocks 42. The cross-section of the crushing blocks 42 is a polygon with arc-shaped corners. The rotating shaft 41 is driven to rotate by the rotation of a motor embedded in the side wall of the bucket 1. Multiple rotating shafts 41 can be connected by chains or gears to achieve synchronous rotation of multiple rotating shafts 41. When the rotating shaft 41 rotates, it drives the crushing blocks 42 to rotate, and crushing is achieved by changing the time interval of the crushing blocks 42. The crushing mechanism 4 is mainly used to crush stones and cement blocks in the slag. Therefore, the spacing between the crushing blocks 42 should not be too small, and needs to be larger than the aperture of the filter described below.

[0029] As another example, Figure 2 、 Figure 7 and Figure 8As shown, the screen mechanism 5 of the present application includes a filter 51, a telescopic rod 52 and a reinforcing rib 54. One end of the telescopic rod 52 is fixedly connected to the edge of the opening of the bucket 1, and the other end of the telescopic rod 52 is fixedly connected to the edge of the filter 51 away from the crushing block 42. The reinforcing rib 54 is sleeved outside the telescopic rod 52, and the filter 51 is movably abutted against the crushing block 42. When the crushing block 42 rotates, since it is a polygon or triangle, when the corner of the triangle contacts the filter 51, the filter 51 is squeezed. When the side of the triangle points to one side of the filter 51, the filter 51 is reset by the reinforcing rib 54. The telescopic rod 52 can keep the reinforcing rib 54 in vertical elastic deformation, thereby realizing the reciprocating vibration of the filter 51. The filter 51 is fixedly connected with a reinforcing rib, which is composed of thicker rods arranged at an angle and is used to support the filter 51 to increase the service life of the filter 51. By providing a filter screen 51 and reinforcing ribs 54, the crushing block 42 is allowed to flexibly abut against the filter screen 51 during rotation, causing the filter screen 51 to vibrate and filter the debris out of the bucket 1. A telescopic sleeve 55 is mounted on the outer surface of the reinforcing ribs 54. The ends of the telescopic sleeve 55 are fixedly connected to the filter screen 51 and the edge of the bucket 1, respectively. The telescopic sleeve 55 is a flexible, retractable tube that prevents excessive debris from falling into the gap between the telescopic rods 52, which could reduce the vibration effect.

[0030] The present application discloses a construction waste crushing and screening device having the following operating principles: During use, after bucket 1 shovels soil into bucket 1, the side of bucket 1 used for shoveling soil is flipped upward by the digging arm. The forward and reverse motors are turned on, driving threaded rod 2 to rotate back and forth. Threaded ring 32 slides back and forth on threaded rod 2, and the spacing between threaded ring 32 and positioning ring 34 decreases or increases, thereby driving the bending amplitude of folding rod 36 from small to large or from large to small, thereby driving connecting rod 37 to move. The bending of folding rod 36 flips the material shoveled into bucket 1, loosening the soil. The gap between connecting rod 37 and the folding rod causes the soil to fall onto crushing mechanism 4. The rotating shaft 41 of crushing mechanism 4 is driven to rotate by the rotation of a motor embedded in the side wall of bucket 1. The rotation of rotating shaft 41 drives crushing block 42 to rotate, and crushing is achieved by the change in the spacing between crushing block 42 during rotation. When the crushing block 42 rotates, since it is a polygon or a triangle, when the corner of the triangle contacts the filter screen 51, the filter screen 51 is squeezed. When the side of the triangle points to one side of the filter screen 51, the filter screen 51 is reset by the reinforcement rib 54. The telescopic rod 52 can keep the reinforcement rib 54 in vertical elastic deformation, thereby realizing the reciprocating vibration of the filter screen 51, thereby improving the effect and efficiency of the slag filtering.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can utilize the above technical content to make many possible changes and modifications to the present invention without departing from the scope of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes, and modifications made to the above embodiments based on the technology of the present invention that do not depart from the content of the present invention are within the scope of protection of the present invention.

Claims

1. A construction waste crushing and screening device, comprising a bucket (1) and a hanging shaft (11), characterized in that The bucket (1) is hollow and is rotatably connected to a plurality of equidistantly arranged threaded rods (2) on its opening side. The threaded rods (2) are movably connected to a motion screening mechanism (3) for screening cement blocks. A crushing mechanism (4) for crushing slag is provided below the motion screening mechanism (3). The crushing mechanism (4) is rotatably connected to the inner wall of the bucket (1), and a gap is provided between the crushing mechanism (4) and the motion screening mechanism (3). A screen mechanism (5) elastically connected to the inner wall of the bucket (1) is provided below the crushing mechanism (4), and the crushing mechanism (4) and the screen mechanism (5) are movably abutted.

2. The construction waste crushing and screening device according to claim 1, characterized in that: The motion screening mechanism (3) comprises a telescopic tube (31), a threaded ring (32), a positioning groove (33), a positioning ring (34), a support rod (35) and a folding rod (36). The telescopic tube (31) is sleeved on the outside of the threaded rod (2). One end of the telescopic tube (31) is fixedly connected to the threaded ring (32). The other end of the telescopic tube (31) is fixedly connected to the positioning ring (34). The threaded rod (2) is provided with a positioning groove (33) without threads. The positioning ring (34) is sleeved in the positioning groove (33). The threaded ring (32) and the positioning ring (34) are both fixedly connected to one end of the support rod (35). The threaded ring (32) is threadedly connected to the threaded rod (2). The other end of the support rod (35) is hinged to the bending point of the folding rod (36). The two ends of the folding rod (36) are hinged to the inner wall of the bucket (1).

3. The construction waste crushing and screening device according to claim 2, characterized in that: The bending points of the multiple groups of folding rods (36) are connected by a connecting rod (37), and the center point of the connecting rod (37) is rotationally connected to the center of the bending point of the folding rod (36).

4. The construction waste crushing and screening device according to claim 1, characterized in that: The crushing mechanism (4) comprises a rotating shaft (41) and a crushing block (42), wherein a plurality of the rotating shafts (41) are rotatably connected to the inner wall of the bucket (1), and a plurality of the crushing blocks (42) are fixedly connected to the rotating shaft (41), and the rotating shaft (41) passes through the center of the crushing block (42).

5. The construction waste crushing and screening device according to claim 4, characterized in that: The cross section of the crushing block (42) is a polygon with arc-shaped corners.

6. The construction waste crushing and screening device according to claim 5, characterized in that: The screen mechanism (5) comprises a filter (51), a telescopic rod (52) and a reinforcing rib (54); one end of the telescopic rod (52) is fixedly connected to the edge of the opening of the bucket (1); the other end of the telescopic rod (52) is fixedly connected to the edge of the filter (51) away from the crushing block (42); the reinforcing rib (54) is sleeved outside the telescopic rod (52); and the filter (51) is in movable contact with the crushing block (42).

7. The construction waste crushing and screening device according to claim 6, characterized in that: The filter screen (51) is fixedly connected with a reinforcing rib.

8. The construction waste crushing and screening device according to claim 6, characterized in that: The outer cover of the reinforcing rib (54) is provided with a telescopic sleeve (55), and the two ends of the telescopic sleeve (55) are fixedly connected to the filter screen (51) and the edge of the bucket (1) respectively.

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