Novel clean disc screen and sorting line using the same
By designing a new type of clean disc screen, the negative pressure shell and flow guiding structure are used to break up the material, and combined with downblowing separation and upsuction separation technology, the problem of mixed materials and dust in the treatment of construction waste is solved, achieving efficient and clean sorting and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI XINGSHI TECHNOLOGY CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-14
AI Technical Summary
Existing disc screens have problems in the treatment of construction waste, such as mixed screening materials, low cleanliness, dust pollution, and low sorting efficiency, resulting in high subsequent processing costs and high energy consumption.
A novel clean disc screen was designed, comprising a stepped frame, an outer cover, a screening body, a flow guide, and a light material suction section. By using a negative pressure shell and flow guide structure to break up the material, combined with downward blowing separation and upward suction separation technologies, efficient separation of dust and film materials is achieved.
It improves the purity and cleanliness of the screened material, reduces dust, simplifies subsequent processing, reduces energy consumption and costs, and achieves clean production and efficient sorting.
Smart Images
Figure CN224486777U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste sorting, and in particular to a novel clean disc screen and a sorting line using it. Background Technology
[0002] In the treatment of construction solid waste, the waste is coarsely crushed by a crusher to form primary crushed material. This primary crushed material is then further subdivided using a disc screen. This primary crushed material includes small pieces of various sizes, dust, lightweight materials (wood chips, foam boards, and other plastic sheets), and plastic film. During the subdivision of the primary crushed material, large pieces tend to overlap, and the film wraps around smaller pieces, causing them to mix with the larger pieces and making them impossible to screen. The disc screen also produces a mixture of film, dust, and small pieces of various sizes. The drawbacks are: firstly, the mixed materials result in low cleanliness, requiring further sorting and purification before direct reprocessing; secondly, the screening site is prone to dust generation, polluting the working environment and affecting worker health; and thirdly, subsequent processing lines also generate dust, requiring complex structures for reprocessing, impacting sorting efficiency, resulting in high overall energy consumption and high sorting costs. Utility Model Content
[0003] To address one or more of the aforementioned problems, this utility model provides a novel clean disc sieve.
[0004] According to one aspect of the present invention, the novel clean disc screen includes: a stepped frame, an outer cover, two screening bodies, a flow guide, and a light material suction part;
[0005] The high-level shelf on the upper left side and the low-level shelf on the right side of the stepped shelf form a right-angle step. Both the high-level shelf and the low-level shelf have two opposing horizontal shelves inside.
[0006] The front and rear covers of the outer casing are connected to the outer walls of the high-level frame and the low-level frame, respectively. The lower opening of the front cover is connected to the first feeder, and the lower opening of the rear cover is connected to the second feeder. The right opening of the front cover and the upper opening of the rear cover are sealed to the left and lower ports of the negative pressure shell, forming a closed screen cavity.
[0007] The two screening bodies are respectively located in the high frame and the low frame, and their disc modules are rotatably connected to the lower end of the corresponding transverse frame. The mixing inlet at the upper end of the left side wall of the front cover is directly opposite the left end of the high screening body, and the large material outlet at the upper end of the rear side wall of the rear cover is directly opposite the right end of the low screening body.
[0008] The flow guide is fixed on the left end of the low frame, and its guide plate is inclined between the upper rightmost disc module and the lower leftmost disc module. The material is thrown from the upper disc module to the lower right and then to the lower disc module.
[0009] A suction pipe is installed on the upper wall of the negative pressure shell of the lightweight material suction section. Lightweight materials and dust materials inside the cavity are discharged through the suction pipe, achieving clean sorting.
[0010] In some embodiments, a downblown separation section is also included. The downblown separation section is located below the left end of the guide plate and fixed on the low-position frame. The high-speed air holes of the downblown separation section are directly opposite the ventilation holes of the guide plate, and the diameter of the ventilation holes is smaller than the diameter of the screen holes of the screening body.
[0011] In some implementations, the high-speed air inlet, ventilation hole, and suction tube inlet are sequentially aligned and located in the same inclined space; the lower end of the suction tube is a conical speed-increasing end with a gradually decreasing diameter.
[0012] In some embodiments, the longitudinal air duct of the downblown separation section is fixed on the left end of the low-position frame and located below the guide plate, and the multiple high-speed air holes of the longitudinal air duct and the multiple ventilation holes of the guide plate are aligned one by one.
[0013] In some embodiments, the flow guide includes a bent flow guide, the vertical seat of which is integrally connected to the lower left end of the inclined guide plate, and the vertical seat is connected to the left end crossbeam of the low frame via a threaded connection; the lower baffle at the lower end of the guide plate is positioned above the disc with a small gap.
[0014] In some embodiments, a base block is threaded into the groove formed by the vertical seat and the guide plate. The base block is made of rubber or polytetrafluoroethylene.
[0015] In some embodiments, the stepped frame includes a base frame, a high frame, and a low frame of a three-dimensional rectangular frame. The high frame is fixed to the upper surface of the base frame, and the low frame is flush with the right side of the base frame. The upper part of both the high frame and the low frame is vertically connected to two symmetrical transverse frames. The negative pressure shell is a right-angled triangular shell with open lower and right ends.
[0016] The first and second feeders are conical shell-shaped chutes.
[0017] In some embodiments, both the front and rear covers include multiple rectangular panels, which are threaded or welded to the inner wall of the rectangular port of the high or low frame.
[0018] In some embodiments, the screening body includes several disc modules. Each disc module includes a rotating shaft, several discs that are longitudinally and equally spaced on the rotating shaft, and a top ring. The two ends of each top ring are attached to the discs to form an annular groove. The left and right ends of the discs enter the annular grooves of the adjacent disc modules to form sieve holes. The two ends of the rotating shaft are connected to the lower ends of the transverse frames on both sides through bearings with seats.
[0019] This novel clean disc screen forms a sealed shell through an outer cover and a negative pressure shell. The height difference between the high and low screening bodies breaks up the overlapping material, facilitating the separation of dust, light materials, and thin film materials from the mixture, which are then discharged through the suction pipe. Each screened material is clean and free of mixing. Its beneficial effects are: First, each screened material has high purity and cleanliness, eliminating the need for further sorting and purification, and facilitating reprocessing; Second, the enclosed screen frame structure and the inclusion of an air-separation clean module ensure a clean and dust-free screening site, effectively protecting the health of workers; Third, in subsequent reprocessing units, dust is greatly reduced, effectively minimizing dust generation, simplifying production line equipment and processes, achieving clean production and high sorting efficiency, with low overall energy consumption and effectively reducing costs.
[0020] A sorting line includes multiple transverse transfer chain conveyors, multiple longitudinal discharge chain conveyors, and multiple disc screens of the same height. The disc screens are arranged transversely and coaxially from left to right. The lower screening body of each disc screen and the upper screening body of the adjacent disc screen on its right are connected by an inclined transverse transfer chain conveyor. Each first feeder and second feeder has a longitudinal discharge chain conveyor at its lower end. Its advantages are: this sorting line facilitates clean production and has a high degree of automation. Attached Figure Description
[0021] Figure 1 This is a front view schematic diagram of a novel clean disc sieve according to one embodiment of the present invention;
[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of the novel clean disc screen shown.
[0023] Figure 3 for Figure 2 A cross-sectional schematic diagram of the guide section and the downflow separation section shown;
[0024] Figure 4 for Figure 3 The diagram shows a top view of the downward-blowing separation section;
[0025] Figure 5 for Figure 3 The diagram shows a front view of the upper suction section of the lightweight material.
[0026] Figure 6 for Figure 2 A top view of the disc sieve shown;
[0027] Disc screen 00, stepped frame 1, reference frame 10, high frame 11, low frame 12, transverse frame 13, adjustable support leg 14, outer cover 2, front cover 21, rear cover 22, screening body 3, disc 31, top ring 32, rotating shaft 33, bearing with seat 34, drive motor 35, double-row chain drive system 36, flow guide 4, flow guide component 40, guide plate 400, vertical seat 401, lower baffle 402, ventilation hole 403, base block 41, light material suction part 5, negative pressure shell 50, suction pipe 51, conical speed-increasing end 511, speed-increasing fan 52, cyclone separator 53, dust removal chamber 54, downward blowing separation part 6, high-speed airflow nozzle 60, longitudinal air duct 61, high-speed air hole 610, high-speed blower 62; first feeder 7, second feeder 8;
[0028] Horizontal transfer chain conveyor 01;
[0029] Longitudinal discharge chain conveyor 02. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0031] Figures 1 to 6 The diagram schematically illustrates a novel clean disc screen according to one embodiment of the present invention. As shown, the novel clean disc screen includes: a stepped frame 1, an outer cover 2, two screening bodies 3, a flow guide 4, and a light material suction part 5;
[0032] The upper left frame 11 and the lower right frame 12 of the stepped frame 1 form a right-angle step. Both the upper and lower frames 11 and 12 have two opposing transverse frames 13 inside. Furthermore, the stepped frame 1 also includes a reference frame 10. The reference frame 10, the upper frame 11, and the lower frame 12 are three-dimensional rectangular frames. The upper frame 11 is fixed to the upper surface of the reference frame 10, and the lower frame 12 is flush with the right side of the reference frame 10. The lower sides of the beams at both ends of the upper and lower frames 11 and 12 are vertically connected to two symmetrical transverse frames 13. Adjustable support legs 14 are also installed at the lower ends of the reference frame 10 and the lower frame 12. The stepped frame 1 with this structure has high structural strength, is easy to manufacture, and its internal cavity can accommodate other parts, simplifying the product size.
[0033] The front cover 21 and rear cover 22 of the outer casing 2 are respectively connected to the outer walls of the high-level frame 11 and the low-level frame 12. The lower opening of the front cover 21 is connected to the first feeder 7, and the lower opening of the rear cover 22 is connected to the second feeder 8. The right opening of the front cover 21 and the upper opening of the rear cover 22 are sealed to the left and lower ports of the negative pressure shell 50, forming a closed screen cavity, which can prevent dust from entering the external environment and facilitate the subsequent formation of a negative pressure suction environment. In a further preferred embodiment, the first feeder 7 and the second feeder 8 are conical shell-shaped chutes, which facilitate the safe and stable falling of the screened material.
[0034] Two screening bodies 3 are respectively located in the high frame 11 and the low frame 12, and their disc modules 30 are rotatably connected to the lower end of the corresponding transverse frame 13. The mixing inlet at the upper end of the left side wall of the front cover 21 is directly opposite the left end of the high screening body 3, and the large material outlet at the upper end of the rear side wall of the rear cover 22 is directly opposite the right end of the low screening body 3.
[0035] The flow guide 4 is fixed to the left end of the low frame 12. Its guide plate 400 is inclined between the upper rightmost disc module 30 and the lower leftmost disc module 30. The material is thrown from the upper disc module 30 to the lower disc module 30. The initially selected material is thrown down due to the gravitational potential energy and inertial potential energy. Most of the material is thrown directly to the disc module 30, some is thrown to the guide plate 400 and then bounces down to the lower disc module 30, and a small part is thrown to the guide plate 400 and slides down to the lower disc module 30. Further, the flow guide 4 includes a bent flow guide 40. The vertical seat 401 of the flow guide 40 is integrally connected to the lower left end of the inclined guide plate 400. The vertical seat 401 is connected to the left end crossbeam of the low frame 12 through a threaded part. Preferably, the lower end of the guide plate 400 is also integrally provided with a vertical lower baffle 402. The lower baffle 402 is positioned with a small gap above the leftmost disc 31.
[0036] A suction pipe 51 is installed on the upper wall of the negative pressure shell 50 of the light material suction part 5. Under the action of the negative pressure of the cavity and the inertial force of the falling material, the light material and dust material are separated from the downward throwing material and enter the screen cavity, and are discharged by the suction pipe 51 to achieve clean sorting.
[0037] This novel clean disc screen forms a sealed housing through an outer cover 2 and a negative pressure shell 50. The height difference between the high and low screening bodies 3 breaks up the mixed material, facilitating the separation of dust, light materials, and thin film materials from the mixture, which are then discharged through the suction pipe 51. Each screened material is clean and free of mixing. Its beneficial effects are: First, each screened material has high purity and cleanliness, eliminating the need for further sorting and purification, and facilitating reprocessing; Second, the enclosed screen frame structure and the inclusion of an air-separation clean module ensure a clean and dust-free screening site, effectively protecting the health of workers; Third, in subsequent reprocessing units, dust is greatly reduced, effectively minimizing dust generation, simplifying production line equipment and processes, achieving clean production and high sorting efficiency, with low overall energy consumption and effectively reducing costs.
[0038] Furthermore, in some preferred embodiments, the disc screen also includes a downblown separation section 6, which is located below the left end of the guide plate 400 and fixed on the low-position frame 12. The high-speed air holes 610 of the downblown separation section 6 are directly opposite the ventilation holes 403 of the guide plate 400. The diameter of the ventilation holes 403 is smaller than the screen hole diameter of the screening body 3. The downblown separation section 6 blows, causing light materials and dusty materials to efficiently and quickly detach from the downblown material and enter the upper part of the screen cavity. Preferably, the inlets of the high-speed air holes 610, the ventilation holes 403, and the suction pipe 51 are sequentially opposite each other and located in the same inclined space, and the dimensions of the three increase sequentially. More preferably, the head end of the suction pipe 51 connected to the sorting cover 50 is a conical speed-increasing end 511 with a gradually decreasing diameter. The other end of the suction pipe 51 is connected to the speed-increasing fan 52, which is connected to the cyclone separator 53. The cyclone separator 53 is connected to the dust removal chamber 54 through a pipeline. Its beneficial effects are: the combination of inertial force, downward blowing force and upward suction force further improves the separation degree of membrane material, dust material, lightweight material and aggregate, and further improves the clean sorting effect.
[0039] Preferably, the downward blowing separation section 6 includes a longitudinal air duct 61, which is fixed to the left end of the low-position frame 12 and located below the guide plate 400. Multiple high-speed air holes 610 are evenly spaced longitudinally on the longitudinal air duct 61, and multiple ventilation holes 403 are evenly spaced longitudinally at the lower end of the guide plate 400, with each high-speed air hole 610 directly opposite a ventilation hole 403. The outer end of the longitudinal air duct 61 is connected to a high-speed blower 62 via a pipeline, and a high-speed airflow nozzle 60 is installed at each high-speed air hole 610. The beneficial effect of this configuration is that the blowing and stripping effect is superior.
[0040] Furthermore, the vertical seat 401 and the inclined guide plate 400 are provided with buffer blocks 41 of equal contour size in the triangular grooves, and the two are fixedly connected to the buffer blocks 41 by threaded parts; the buffer blocks 41 are made of rubber or polytetrafluoroethylene. The beneficial effect is that this arrangement makes the overall structure stable and free from abnormal stress.
[0041] Furthermore, the negative pressure shell 50 is a right-angled triangular shell with an open lower and right end. The upper end of the rectangular upper inclined plate of the negative pressure shell 50 is fixedly connected to the high-level frame 11 and the lower end is fixedly connected to the low-level frame 12. Its two triangular side plates are respectively fixedly connected to the right side wall of the high-level frame 11 and the upper wall of the front and rear end beams of the low-level frame 12. It and the outer cover 2 form a sealed screening chamber. The upper inclined plate is equipped with a suction pipe 51. Its beneficial effect is that the negative pressure effect of this setting is good, which facilitates the sorting and discharge of the membrane material.
[0042] Preferably, the front cover 21 and the rear cover 22 are two relatively independent rectangular shells, which are respectively fixedly connected to the high frame 11 or the low frame 12 by threaded parts; the beneficial effect is that the structure has high sealing performance.
[0043] Preferably, both the front cover 21 and the rear cover 22 include multiple rectangular panels. The bent flanges of the rectangular panels are threadedly connected to the inner wall of the rectangular port of the high frame 11 or the low frame 12, or the rectangular panels are directly welded to the inner wall of the rectangular port. The advantage of this structure is that it is easy to process and manufacture.
[0044] Furthermore, the screening body 3 includes several transversely spaced disc modules 30. Each disc module 30 includes a rotating shaft 33, several longitudinally spaced discs 31 sleeved on the rotating shaft 33, and several top rings 32. Each top ring 32 has its two ends attached to the disc 31. The adjacent discs 31 and top rings 32 of each disc module 30 surround and form an annular groove. The discs 31 of adjacent disc modules 30 are arranged alternately. The left and right ends of the discs 31 enter the annular groove of the adjacent disc module 30 to form sieve holes. The two ends of the rotating shaft 33 are connected to the lower ends of the transverse frames 13 on both sides through bearings 34 with seats. Preferably, it also includes lateral pressure rings and adjusting nuts. The lateral pressure rings are gapped at both ends of the rotating shaft 33 and fit against the outer surface of the outermost disc 31. The adjusting nuts are connected to the threaded sections at both ends of the rotating shaft 33 and laterally press the lateral pressure rings. The longitudinal adjustment is achieved by stopping the adjusting nuts at different threaded sections. The outer peripheral wall of the rotating shaft 33 is provided with a continuous longitudinal keyway. The disc 31 is longitudinally slidably connected to the longitudinal keyway, and the top ring 32 is fitted over the longitudinal keyway. Preferably, by using discs 31 of different thicknesses and adjusting the diameter and width of the top ring 32, the length and width of the screen holes can be adjusted. For example, in the high-level screening body 3, the length and width are 60-70mm and 60-70mm respectively; in the low-level screening body 3, the length and width are both 80mm. The beneficial effect is that this setting is easy to adjust and can obtain screen holes of various sizes.
[0045] Preferably, the screening body 3 includes two drive motors 35. One drive motor 35 is fixedly connected to the middle of the outer side of a high frame 11 or a low frame 12 of a mounting frame, and the other drive motor 35 is fixedly connected to the left side of the mounting frame. Each rotating shaft 33 is connected by a double-row chain drive system 36, and one of the rotating shafts 33 is connected to a drive motor 35 through a coupling. Its beneficial effects are: the power structure has stable transmission torque, strong resistance to impact load, and smooth overall movement.
[0046] A sorting line includes multiple transverse transfer chain conveyors 01, multiple longitudinal discharge chain conveyors 02, and multiple disc screens 00 of the same height, any one of which are mentioned above. The disc screens 00 are arranged transversely and coaxially from left to right. The screening body 3 of each disc screen 00 and the high-level screening body 3 of the adjacent disc screen 00 on the right are connected by an inclined transverse transfer chain conveyor 01. Each first feeder 7 and second feeder 8 is equipped with a longitudinal discharge chain conveyor 02 at its lower end. Its advantages are: this sorting line facilitates clean production and has a high degree of automation.
[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A novel clean disc sieve, characterized in that, Includes: a stepped frame (1), an outer cover (2), two screening bodies (3), a flow guide (4), and a light material suction part (5); The high frame (11) on the upper left side and the low frame (12) on the right side of the stepped frame (1) form a right-angle step. Both the high frame (11) and the low frame (12) are equipped with two opposing horizontal frames (13). The front cover (21) and rear cover (22) of the outer cover (2) are respectively connected to the outer walls of the high frame (11) and the low frame (12). The lower opening of the front cover (21) is connected to the first feeder (7), and the lower opening of the rear cover (22) is connected to the second feeder (8). The right opening of the front cover (21) and the upper opening of the rear cover (22) are sealed to the left port and lower port of the negative pressure shell (50) to form a closed screen cavity. The two screening bodies (3) are respectively located in the high frame (11) and the low frame (12), and their disc modules (30) are rotatably connected to the lower end of the corresponding transverse frame (13). The mixing inlet at the upper end of the left side wall of the front cover (21) is directly opposite to the left end of the high screening body (3), and the large material outlet at the upper end of the rear side wall of the rear cover (22) is directly opposite to the right end of the low screening body (3). The flow guide (4) is fixed on the left end of the low frame (12), and its guide plate (400) is inclined between the upper rightmost disc module (30) and the lower leftmost disc module (30). The material is thrown from the upper disc module (30) to the lower right and down to the lower disc module (30). The suction pipe (51) is installed on the upper wall of the negative pressure shell (50) of the light material suction part (5). Light materials and dust in the cavity are discharged through the suction pipe (51) to achieve clean sorting.
2. The novel clean disc screen according to claim 1, characterized in that, It also includes a down-blowing separation section (6), which is located below the left end of the guide plate (400) and fixed on the low-position frame (12). The high-speed air hole (610) of the down-blowing separation section (6) is directly opposite the ventilation hole (403) of the guide plate (400). The diameter of the ventilation hole (403) is smaller than the diameter of the screen hole of the screening body (3).
3. The novel clean disc screen according to claim 2, characterized in that, The inlets of the high-speed air hole (610), ventilation hole (403) and suction tube (51) are aligned and located in the same inclined space; the lower end of the suction tube (51) is a conical speed-increasing end (511) with a gradually decreasing diameter.
4. The novel clean disc screen according to claim 2, characterized in that, The longitudinal air duct (61) of the downblowing separation section (6) is fixed on the left end of the low frame (12) and located below the guide plate (400). The multiple high-speed air holes (610) of the longitudinal air duct (61) and the multiple ventilation holes (403) of the guide plate (400) are aligned with each other.
5. The novel clean disc sieve according to claim 1, characterized in that, The flow guide (4) includes a bent flow guide (40), the vertical seat (401) of the flow guide (40) is integrally connected to the lower left end of the inclined guide plate (400), and the vertical seat (401) is connected to the left end crossbeam of the low frame (12) through a threaded part; the lower baffle (402) at the lower end of the guide plate (400) is provided with a small gap above the disc (31).
6. The novel clean disc screen according to claim 5, characterized in that, The groove formed by the vertical seat (401) and the guide plate (400) is threaded with a base block (41), which is made of rubber or polytetrafluoroethylene.
7. The novel clean disc screen according to claim 1, characterized in that, The stepped frame (1) includes a three-dimensional rectangular frame, a base frame (10), a high frame (11), and a low frame (12). The high frame (11) fixes the upper surface of the base frame (10), and the low frame (12) is flush with the right side of the base frame (10). The upper part of both the high frame (11) and the low frame (12) is vertically connected to two symmetrical transverse frames (13). The negative pressure shell (50) is a right-angled triangular shell with an open lower and right end. The first feeder (7) and the second feeder (8) are conical shell-shaped chutes.
8. The novel clean disc screen according to claim 7, characterized in that, The front cover (21) and the rear cover (22) each include multiple rectangular boxes, which are threaded or welded to the inner wall of the rectangular port of the high frame (11) or the low frame (12).
9. The novel clean disc screen according to claim 7, characterized in that, The screening body (3) includes several disc modules (30). Each disc module (30) includes a rotating shaft (33), several discs (31) that are longitudinally and equally spaced on the rotating shaft (33), and a top ring (32). Each top ring (32) is attached to the disc (31) at both ends to form an annular groove. The left and right ends of the disc (31) enter the annular groove of the adjacent disc module (30) to form a sieve hole. The two ends of the rotating shaft (33) are connected to the lower ends of the transverse frame (13) on both sides through bearings (34).
10. A sorting line, characterized in that, It includes multiple transverse transfer chain conveyors (01), multiple longitudinal discharge chain conveyors (02), and multiple disc screens (00) of the same height as described in any one of claims 1 to 9. The disc screens (00) are arranged transversely and coaxially from left to right. The low screening body (3) of each disc screen (00) and the high screening body (3) of the disc screen (00) adjacent to the right end are connected by an inclined transverse transfer chain conveyor (01). Each first feeder (7) and second feeder (8) is provided with a longitudinal discharge chain conveyor (02) at its lower end.