Large stone screening device

Abstract

The invention discloses a boulder screening device, and relates to the technical field of earthwork backfilling, the boulder screening device comprises a screening box, a buffer box is fixed at the upper end of the screening box, a material conveying belt device is arranged at the upper end of the buffer box, baffles are fixed at the upper end of the buffer box and located on the two sides of the material conveying belt device, and a buffer mechanism is arranged on the inner side of the buffer box; a triangular hollowed-out frame is fixed to the inner side of the screen box, an inclined screen plate is fixed to the upper end of the inner side of the triangular hollowed-out frame, and discharging belt equipment is arranged on the inner side of the screen box and located at the lower end of the triangular hollowed-out frame. The buffering mechanism comprises rotating shafts, the lower end of the inner side of the buffering box is rotationally connected with the multiple rotating shafts, a buffering cylinder is fixed to the outer side of each rotating shaft, and a plurality of buffering rubber rings are fixed to the outer side of each buffering cylinder. According to the large stone screening device, stone blocks are conveniently received through the buffering mechanism, the falling distance between the stone blocks and the inclined screen plate is greatly shortened, and therefore damage caused by falling of the stone blocks to the inclined screen plate is effectively relieved.

Description

Technical Field

[0001] The invention relates to the technical field of earth backfilling, in particular to a large stone screening device. Background Art

[0002] In backfill projects, there are strict requirements for the size of the medium and large diameter stones in the backfill, which must not be larger than a certain size, but it is difficult to achieve this during actual construction. In construction sites, especially in demolition projects, a large number of slag blocks are often removed, which have a certain recycling value after a certain screening.

[0003] A conventional crushed stone screening device comprises a screening tank and a feed inlet and a discharge inlet which are respectively arranged at the top and the bottom of the screening tank, and a stirring device is arranged inside the screening tank.

[0004] When the above device is in use, stones are dropped into the screening tank through the feed pipe, so that they fall directly onto the fixed screening plate and the movable screening plate. There is no buffer structure therein, which makes the fixed screening plate and the movable screening plate very easy to be damaged, thus affecting their service life. Therefore, the present invention proposes a large stone screening device. Summary of the invention

[0005] Based on this, it is necessary to provide a large stone screening device to address the above technical problems. Through the overall structural coordination design, after the stones are dropped into the inner side of the buffer box through the conveyor belt equipment, the buffer mechanism is used to conveniently receive the stones, and then the driving assembly is used to conveniently drive the stones to the upper end of the inclined screen plate, which greatly shortens the falling distance between the stones and the inclined screen plate, thereby effectively reducing the damage to the inclined screen plate caused by the falling stones, and facilitating the long-term and stable screening of stones.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A large rock screening device, which is used for earth backfilling; It comprises a screen box, a buffer box is fixed on the upper end of the screen box, a conveyor belt device is arranged on the upper end of the buffer box, baffles are fixed on the upper end of the buffer box and on both sides of the conveyor belt device, a buffer mechanism is arranged on the inner side of the buffer box, a triangular hollow frame is fixed on the inner side of the screen box, an inclined screen plate is fixed on the upper end of the inner side of the triangular hollow frame, and a discharge belt device is arranged on the inner side of the screen box and at the lower end of the triangular hollow frame; The buffer mechanism includes a rotating shaft, and the lower end of the inner side of the buffer box is rotatably connected to multiple rotating shafts. A buffer cylinder is fixed to the outer side of each rotating shaft, and multiple buffer rubber rings are fixed to the outer side of the buffer cylinder. A first sprocket is fixed to the outer side of each rotating shaft and located on one side of the buffer cylinder. A driving assembly is arranged between the buffer box and the multiple first sprockets.

[0007] As a preferred embodiment of the large stone screening device provided by the present invention, the driving assembly includes a mounting seat, a mounting seat is fixed at the lower end of one side of the buffer box, a first motor is fixed on the inner side of the mounting seat, the output end of the first motor passes through the buffer box and is fixed with a second sprocket, the second sprocket is located on the inner side of the buffer box, the output end of the first motor is rotatably connected to the buffer box, and the second sprocket and the outer transmission between the plurality of first sprockets are connected by a chain.

[0008] As a preferred embodiment of the large stone screening device provided by the present invention, a retaining ring is fixed to the outer side of each rotating shaft close to the first sprocket, and the retaining ring is located between the first sprocket and the buffer cylinder.

[0009] As a preferred embodiment of the large stone screening device provided by the present invention, a support plate is fixed inside the screen box and at the lower end of the inclined screen plate, and the lower end of the inclined screen plate is in contact with the support plate.

[0010] As a preferred embodiment of the large stone screening device provided by the present invention, a dredging frame is slidably connected to the inner side of the inclined screen plate.

[0011] As a preferred embodiment of the large stone screening device provided by the present invention, guide columns and screws are respectively arranged on both sides of the inner side of the triangular hollow frame, and the guide columns and screws are both located at the lower end of the inclined screen plate, and the two ends of the guide columns are respectively fixed to the triangular hollow frame and the support plate, a second motor is arranged at one end of the screw, and the other end of the screw is rotatably connected to the support plate, the second motor is fixed to the triangular hollow frame, and the output end of the second motor is fixed to the screw, one side of the dredging frame is slidably connected to the guide columns, and the other side of the dredging frame is threadedly connected to the screw.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The large stone screening device provided by the present invention has an overall structural coordination design, so that after the stone is put into the inner side of the buffer box by the conveyor belt device, the buffer mechanism is used to conveniently receive the stone, and then cooperates with the driving component to conveniently drive the stone to be re-conveyed to the upper end of the inclined screen plate for screening, which greatly shortens the falling distance between the stone and the inclined screen plate, thereby effectively reducing the damage to the inclined screen plate caused by the falling stone, and is convenient for long-term and stable screening of the stone; The dredging frame is further driven to move back and forth on the inner side of the inclined screen plate, so as to facilitate the dredging of stones blocked on the inner side of the inclined screen plate during the screening process, thereby facilitating the long-term stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the scheme of the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of the overall structure of the large stone screening device provided by the present invention; Figure 2 A schematic diagram of the structure of the inner side of the buffer box of the large stone screening device provided by the present invention; Figure 3 A schematic diagram of the structure of the inner side of the screen box of the large stone screening device provided by the present invention; Figure 4 This is a schematic structural diagram of the inner side of the triangular hollow frame of the bulk stone screening device provided by the present invention.

[0015] The markings in the figure are as follows: 1. Screen box; 2. Buffer box; 3. Baffle; 4. Feed belt equipment; 5. Triangular hollow frame; 6. Inclined screen plate; 7. Support plate; 8. Discharge belt equipment; 9. Rotating shaft; 10. Buffer cylinder; 11. Buffer rubber ring; 12. First sprocket; 13. Carrying seat; 14. First motor; 15. Second sprocket; 16. Chain; 17. Baffle ring; 18. Guide column; 19. Second motor; 20. Screw; 21. Dredging frame. DETAILED DESCRIPTION

[0016] As described in the background technology, when the above-mentioned device is in use, stones are put into the screening tank through the feed pipe, so that they fall directly onto the fixed screening plate and the movable screening plate. There is no buffer structure, which makes the fixed screening plate and the movable screening plate very easy to be damaged, affecting their service life.

[0017] In order to solve this technical problem, the present invention provides a large stone screening device, which is applied to earth backfill; It comprises a screen box 1, a buffer box 2 is fixed on the upper end of the screen box 1, a conveyor belt device 4 is arranged on the upper end of the buffer box 2, baffles 3 are fixed on the upper end of the buffer box 2 and on both sides of the conveyor belt device 4, a buffer mechanism is arranged on the inner side of the buffer box 2, a triangular hollow frame 5 is fixed on the inner side of the screen box 1, an inclined screen plate 6 is fixed on the upper end of the inner side of the triangular hollow frame 5, and a discharge belt device 8 is arranged on the inner side of the screen box 1 and at the lower end of the triangular hollow frame 5; The buffer mechanism includes a rotating shaft 9, and the lower end of the inner side of the buffer box 2 is rotatably connected to multiple rotating shafts 9. A buffer cylinder 10 is fixed to the outer side of each rotating shaft 9, and multiple buffer rubber rings 11 are fixed to the outer side of the buffer cylinder 10. A first sprocket 12 is fixed to the outer side of each rotating shaft 9 and located on one side of the buffer cylinder 10, and a driving assembly is arranged between the buffer box 2 and the multiple first sprockets 12.

[0018] The large stone screening device provided by the present invention has an overall structural coordination design, so that after the stone is dropped into the inner side of the buffer box 2 through the conveyor belt equipment 4, the buffer mechanism is used to conveniently receive the stone, and then the driving component is used to conveniently drive the stone to be transported to the upper end of the inclined screen plate 6 for screening, which greatly shortens the falling distance between the stone and the inclined screen plate 6, thereby effectively reducing the damage to the inclined screen plate 6 caused by the falling stone, and facilitating the long-term and stable screening of the stone.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] Embodiment 1: Please refer to Figure 1-4 A large stone screening device comprises a screen box 1, a buffer box 2 is fixed on the upper end of the screen box 1, a conveyor belt device 4 is arranged on the upper end of the buffer box 2, and unscreened stones are conveniently put into the inner side of the buffer box 2 through the conveyor belt device 4. In order to prevent stones from leaking out during the putting-in process, baffles 3 are fixed on the upper end of the buffer box 2 and on both sides of the conveyor belt device 4; In order to facilitate the screening of stones, a triangular hollow frame 5 is fixed inside the screen box 1, and an inclined screen plate 6 is fixed at the upper end of the inner side of the triangular hollow frame 5. After the inclined screen plate 6 is used for diversion and screening, large stones roll to the outside of the screen box 1, while small stones continue to fall downward. In order to continuously transport small stones outward to avoid accumulation affecting the screening operation, a discharge belt device 8 is provided inside the screen box 1 and at the lower end of the triangular hollow frame 5; Before the stones dropped into the buffer box 2 by the conveyor belt device 4 fall to the upper end of the inclined screen plate 6, a buffer mechanism is provided inside the buffer box 2 in order to receive and re-convey the stones, thereby greatly shortening the falling distance between the stones and the inclined screen plate 6 and effectively reducing the damage to the inclined screen plate 6 caused by the falling stones; Specifically, the buffer mechanism includes a rotating shaft 9, and the lower end of the inner side of the buffer box 2 is rotatably connected with a plurality of rotating shafts 9, and a buffer cylinder 10 is fixed to the outer side of each rotating shaft 9, and a plurality of buffer rubber rings 11 are fixed to the outer side of the buffer cylinder 10, so as to facilitate receiving stones, and further buffer the fallen stones through the soft characteristics of the buffer rubber rings 11, and in order to facilitate re-transporting the stones that fall to the outer side of the plurality of buffer cylinders 10 to the upper end of the inclined screen plate 6, a first sprocket 12 is fixed to the outer side of each rotating shaft 9 and on one side of the buffer cylinder 10, and a driving assembly is provided between the buffer box 2 and the plurality of first sprockets 12; Specifically, the driving assembly includes a mounting seat 13, the mounting seat 13 is fixed at the lower end of one side of the buffer box 2, a first motor 14 is fixed inside the mounting seat 13, the output end of the first motor 14 passes through the buffer box 2 and is fixed with a second sprocket 15, the second sprocket 15 is located inside the buffer box 2, the output end of the first motor 14 is rotatably connected to the buffer box 2, and the second sprocket 15 and the outer side of the plurality of first sprockets 12 are transmission-connected by a chain 16; In the process of receiving stones, in order to conveniently protect the multiple first sprockets 12 and the chain 16, a retaining ring 17 is fixed on the outer side of each rotating shaft 9 close to the first sprocket 12, and the retaining ring 17 is located between the first sprocket 12 and the buffer cylinder 10; Embodiment 2: The large stone screening device provided in Example 1 is further optimized, specifically, as follows Figure 4 As shown, in the process of screening and guiding stones through the inclined screen plate 6, when the inner side of the inclined screen plate 6 is blocked by stones, in order to facilitate automatic dredging, the inner side of the inclined screen plate 6 is slidably connected with a dredging frame 21. In order to facilitate the dredging frame 21 to move back and forth inside the inclined screen plate 6 to achieve automatic dredging, a support plate 7 is fixed inside the screen box 1 and at the lower end of the inclined screen plate 6. The lower end of the inclined screen plate 6 is in contact with the support plate 7. Guide columns 18 and 21 are respectively provided on both sides of the inner side of the triangular hollow frame 5. The screw 20, the guide column 18 and the screw 20 are all located at the lower end of the inclined screen plate 6, the two ends of the guide column 18 are respectively fixed to the triangular hollow frame 5 and the support plate 7, a second motor 19 is provided at one end of the screw 20, the other end of the screw 20 is rotatably connected to the support plate 7, the second motor 19 is fixed to the triangular hollow frame 5, the output end of the second motor 19 is fixed to the screw 20, one side of the dredging frame 21 is slidably connected to the guide column 18, and the other side of the dredging frame 21 is threadedly connected to the screw 20; The above electrical components are all electrically connected to the main controller and the power supply, wherein the main controller can be a conventional known device for control such as a computer, and the existing disclosed power connection technology will not be described in detail here; The use process of the large stone screening device provided by the present invention is as follows: after the stone is put into the inner side of the buffer box 2 through the conveyor belt device 4, it is received by multiple buffer cylinders 10, and the buffer rubber ring 11 is used to reduce the damage of the stone to the buffer cylinder 10, and the first motor 14 is started to drive the second sprocket 15 to rotate, and the multiple first sprockets 12 are used through the transmission of the chain 16 to make the multiple shafts 9 rotate synchronously in the same direction, so that the stone is conveniently transported to the upper end of the inclined screen plate 6 for screening, and the falling distance between the stone and the inclined screen plate 6 is greatly shortened, effectively reducing the damage to the inclined screen plate 6 caused by the falling stone; In the process of screening and guiding stones through the inclined screen plate 6, large stones are guided by the inclined screen plate 6 and directly roll down to the outside of the screen box 1 to complete screening, and small stones continue to fall through the inclined screen plate 6 to the upper end of the discharge belt device 8, so that the small stones are continuously transported outward by the discharge belt device 8 to avoid accumulation, and the second motor 19 is started to drive the screw 20 to rotate back and forth in a forward and reverse cycle, and the dredging frame 21 is driven to reciprocate on the inner side of the inclined screen plate 6 through the guidance of the guide column 18, so as to realize automatic dredging when blockage occurs on the inner side of the inclined screen plate 6.

[0022] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A large stone screening device, characterized in that: It comprises a screen box (1), a buffer box (2) is fixed at the upper end of the screen box (1), a conveyor belt device (4) is arranged at the upper end of the buffer box (2), baffles (3) are fixed at the upper end of the buffer box (2) and on both sides of the conveyor belt device (4), a buffer mechanism is arranged on the inner side of the buffer box (2), a triangular hollow frame (5) is fixed on the inner side of the screen box (1), an inclined screen plate (6) is fixed at the upper end of the inner side of the triangular hollow frame (5), and a discharge belt device (8) is arranged on the inner side of the screen box (1) and at the lower end of the triangular hollow frame (5); The buffer mechanism comprises a rotating shaft (9), the lower end of the inner side of the buffer box (2) is rotatably connected to a plurality of rotating shafts (9), a buffer cylinder (10) is fixed to the outer side of each rotating shaft (9), a plurality of buffer rubber rings (11) are fixed to the outer side of the buffer cylinder (10), a first sprocket (12) is fixed to the outer side of each rotating shaft (9) and located on one side of the buffer cylinder (10), and a driving assembly is provided between the buffer box (2) and the plurality of first sprockets (12).

2. The large stone screening device according to claim 1, characterized in that: The driving assembly comprises a mounting seat (13), the mounting seat (13) being fixed at the lower end of one side of the buffer box (2), a first motor (14) being fixed inside the mounting seat (13), an output end of the first motor (14) passing through the buffer box (2) and being fixed with a second sprocket (15), the second sprocket (15) being located inside the buffer box (2), the output end of the first motor (14) being rotationally connected to the buffer box (2), and a chain (16) being transmission-connected to the outer sides of the second sprocket (15) and the plurality of first sprockets (12).

3. The large stone screening device according to claim 1, characterized in that: A retaining ring (17) is fixed to the outer side of each rotating shaft (9) on the side close to the first sprocket (12), and the retaining ring (17) is located between the first sprocket (12) and the buffer cylinder (10).

4. The large stone screening device according to claim 1, characterized in that: A support plate (7) is fixed inside the screen box (1) and at the lower end of the inclined screen plate (6), and the lower end of the inclined screen plate (6) is in contact with the support plate (7).

5. The large stone screening device according to claim 4, characterized in that: A dredging frame (21) is slidably connected to the inner side of the inclined screen plate (6).

6. The large stone screening device according to claim 5, characterized in that: A guide column (18) and a screw rod (20) are respectively arranged on both sides of the inner side of the triangular hollow frame (5); the guide column (18) and the screw rod (20) are both located at the lower end of the inclined screen plate (6); the two ends of the guide column (18) are respectively fixed to the triangular hollow frame (5) and the support plate (7); a second motor (19) is arranged at one end of the screw rod (20); the other end of the screw rod (20) is rotatably connected to the support plate (7); the second motor (19) is fixed to the triangular hollow frame (5); the output end of the second motor (19) is fixed to the screw rod (20); one side of the dredging frame (21) is slidably connected to the guide column (18); and the other side of the dredging frame (21) is threadedly connected to the screw rod (20).

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