Novel multi-step disc screen

Abstract

This utility model discloses a novel multi-stage disc screen. The disc screen includes: a frame, a high-level screening section, multiple low-level screening sections, and a flow guide section; the high-level screening section is installed within the high-level frame of the frame, and adjacent disc modules of the high-level screening section are provided with A1×B1 initial screening holes; multiple low-level screening sections are coaxially installed laterally from left to right within multiple low-level frames of the frame; the left end of the first low-level screening section forms an A1×B1 secondary screening hole between adjacent disc modules, and the right end of the first low-level screening section forms an A2×B2 secondary screening hole between adjacent disc modules; the left end of the Nth low-level screening section forms an A1×B1 secondary screening hole between adjacent disc modules. N‑1 ×B N‑1 The multiple selection sieve holes and the right end adjacent to the disc module form A N ×B N The subsequent selection of sieve apertures, A1 to A N B1 to B N All dimensions increase sequentially; multiple guide sections are inclinedly arranged between the high-level and low-level frames, as well as between adjacent low-level frames. This invention features high purity of screened material, ease of reprocessing, high sorting efficiency, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of primary crushing and re-sorting, and in particular to a novel multi-stage disc screen. Background Technology

[0002] In the treatment of bulky solid waste, crushers are often used to coarsely crush the waste into primary crushed material, which contains small pieces of various sizes. This primary crushed material is then further subdivided using disc screens. Different sizes of the undersize material are then processed further on different post-processing lines or reused according to their size. However, existing primary crushing processes suffer from a "cage" phenomenon where large pieces overlap, causing small pieces to mix with the large pieces. These smaller pieces cannot be screened through the appropriate screen openings and end up mixed with the larger pieces in subsequent processing. The drawbacks are: firstly, the purity of the undersize material is low, as various sizes of materials are mixed together; that is, the undersize material from the same disc screen contains small pieces of different sizes, affecting the efficiency and effectiveness of subsequent post-processing lines and preventing direct reuse; secondly, to achieve the same purity within the same size range, existing undersize materials require multiple sorting and purification processes, resulting in low sorting efficiency, unreliable quality, 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 multi-step disc screen.

[0004] According to one aspect of the present invention, the novel multi-stage disc screen includes: a frame, a high-level screening section, multiple low-level screening sections, and multiple flow guiding sections.

[0005] The frame includes a high frame and multiple low frames. A low frame is located at the right end of the high frame, and a rear low frame is located at the right end of each front low frame, forming multiple right-angled material steps from high to low.

[0006] The high-level screening unit includes several disc modules rotatably connected within a high-level frame. Adjacent disc modules form initial screening sieve holes with a length of A1 and a width of B1.

[0007] Multiple low-level screening units are arranged horizontally coaxially from left to right. Each low-level screening unit has multiple disc modules rotatably connected to a low-level frame. The first low-level screening unit has a multiplexing sieve hole of length A1 and width B1 between adjacent disc modules on its left end, and a subsequent screening sieve hole of length A2 and width B2 between adjacent disc modules on its right end. The Nth low-level screening unit has a multiplexing sieve hole of length A1 between adjacent disc modules on its left end. N-1 And the width is B N-1 The multiple selection of sieve holes and the formation of a length of A between adjacent disc modules on the right end N And the width is B N The subsequent selection of sieve apertures, wherein: A1 to A N B1 to BN All increase sequentially, N≥2;

[0008] One guide section is inclined between the high-level frame and the low-level frame, and the remaining guide sections are inclined between adjacent low-level frames. The upper end of the inclined guide plate is located below the rightmost disc module of the right-side screening section and the lower end is located above the leftmost disc module of the left-side screening section. The mixed material is thrown from above onto the disc module at the left end of the low-level screening section due to gravitational potential energy and motion inertial potential energy, and is subjected to high-purity re-selection by the re-selection sieve holes.

[0009] The disc module includes multiple discs spaced equally in the longitudinal direction and an annular groove between adjacent discs. The discs of adjacent disc modules are arranged in an alternating manner, and the left and right ends of the discs enter the annular groove of the adjacent disc module to form a sieve.

[0010] In some implementations, the multiple base frames of the frame are coaxially aligned front to back and their heights decrease sequentially. The upper end of the first base frame is connected to the high-level frame via a threaded connection, the upper end of the middle base frame is connected to the low-level frame via a threaded connection, and the upper end and lower right end of the last base frame are both threaded to a low-level frame.

[0011] The base frame, high-level frame, and low-level frame are three-dimensional rectangular frames.

[0012] In some embodiments, the frame includes a base frame with multiple right-angled steps of gradually decreasing height. A high-level frame is installed on the upper surface of the base frame, a low-level frame is installed on the upper surface of each right-angled step, and a low-level frame is also installed on the right side of the last right-angled step.

[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 threadedly connected to the end beam of the low-position frame.

[0014] In some embodiments, the vertical seat and the inclined guide plate are provided with a buffer base block in the triangular groove, and the two are fixedly connected to the buffer base block by a threaded connection.

[0015] In some implementations, there are two low-level screening units.

[0016] In the high-level screening section, the dimensions of A1 are 20-40mm, and the dimensions of B1 are 20-40mm.

[0017] In the first low-level screening section, the size of A2 is 60mm, and the size of B2 is 60mm;

[0018] In the second low-level screening section, the dimensions of A3 are 80mm and the dimensions of B3 are 80mm.

[0019] In some embodiments, at least two discharge ports are also included, with the first discharge port located below the primary selection disc module of the high-level screening section and the secondary selection disc module of the low-level screening section, the middle discharge port located below the secondary selection disc module of the front low-level screening section and the secondary selection disc module of the rear low-level screening section, and the last discharge port located below the secondary selection disc module of the low-level screening section.

[0020] In some embodiments, the rotating shaft of the disc module is longitudinally and equally spaced with multiple discs and is fitted with multiple top rings longitudinally and equally spaced with each top ring having its two side walls in contact with the adjacent discs; the shaft has bushings with seated bearings on both sides, and the multiple disc modules have seated bearings arranged laterally and equally spaced with threads connected to the vertical wall plates of the high-position frame and the low-position frame.

[0021] In some implementations, using discs of different thicknesses and top rings of different diameters and widths can achieve different A values. N B N sieve holes.

[0022] In some embodiments, a lateral pressure ring and an adjusting nut are also included. The lateral pressure ring is fitted with a gap at both ends of the rotating shaft and fits against the outermost outer surface of the disc. The adjusting nut is connected to the threaded sections at both ends of the rotating shaft and laterally presses against the lateral pressure ring. The longitudinal adjustment is achieved by adjusting the nut.

[0023] This novel multi-stage disc screen employs multiple screening sections with height differences. The rear section of each screening section has the same diameter as the front section of the adjacent section, but with a height difference. Material can be thrown from a higher position to a lower position at the height transition point, subjected to gravitational potential energy and the recoil force of the lower disc, thus disrupting the bridging of large materials and allowing smaller materials to separate within the corresponding screen openings, obtaining high-purity undersize material. The continuous operation of each screening section separates the screened material into various preset sizes of high-purity material. Its advantages are: firstly, the disc screen uses a stepped screening structure, enabling rapid... The device employs a multi-stage structure to obtain high-purity undersize materials of various grades, achieving separation of these materials. Specifically, the materials screened at the rear end of one disc screen section and the front end of an adjacent disc screen section are of the same size, allowing for direct application of the high-purity materials. This significantly improves the processing efficiency and quality of the post-processing line. Secondly, materials only need to be screened once to achieve high-purity screening, eliminating the need for multiple sorting and purification processes. This results in high sorting efficiency, reliable quality, reduced overall energy consumption, and low sorting costs. Thirdly, the disc screen has a flow guide section, providing excellent material flow guidance and preventing material from scattering and mixing, further improving sorting purity. Attached Figure Description

[0024] Figure 1This is a front view schematic diagram of a novel multi-step disc screen according to one embodiment of the present invention after being rotated 90° to the left.

[0025] Figure 2 for Figure 1 A partially enlarged schematic diagram of the disc screen shown;

[0026] Figure 3 for Figure 2 Front view schematic diagram of the guide section shown;

[0027] Figure 4 for Figure 1 A cross-sectional schematic diagram of a multi-step disc sieve is shown.

[0028] Figure 5 for Figure 4 A partially enlarged schematic diagram of the disc screen shown;

[0029] Frame 1, base frame 10, high frame 11, low frame 12, wall panel 13;

[0030] High-level screening section 2; Low-level screening section 3;

[0031] Flow guide 4, flow guide 40, inclined guide plate 400, vertical seat 401, lower baffle 402, buffer base block 41;

[0032] Disc module 5, sieve hole 50, disc 51, bearing with seat 52, rotating shaft 53, top ring 54, side pressure ring 55, adjusting nut 56;

[0033] 6. Feed port; 7. Drive motor; 8. Double-row chain drive system. Detailed Implementation

[0034] 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.

[0035] Figures 1 to 5 A novel multi-stage disc screen according to one embodiment of the present invention is schematically shown. As shown, the novel multi-stage disc screen includes: a frame 1, a high-level screening section 2, multiple low-level screening sections 3, and multiple flow guiding sections 4;

[0036] The frame 1 includes a high frame 11 and multiple low frames 12. A low frame 12 is provided at the right end of the high frame 11. Each front low frame 12 is provided at the right end of a rear low frame 12, forming multiple right-angled material steps from high to low.

[0037] The high-level screening unit 2 includes several disc modules 5 rotatably connected within the high-level frame 11. Preliminary screening holes 50 with a length of A1 and a width of B1 are formed between adjacent disc modules 5.

[0038] Multiple low-level screening units 3 are arranged horizontally coaxially from left to right. Multiple disc modules 5 of each low-level screening unit 3 are rotatably connected to a low-level frame 12. The first low-level screening unit 3 has a multiple selection sieve 50 with a length of A1 and a width of B1 between adjacent disc modules 5 on its left end, and a secondary selection sieve 50 with a length of A2 and a width of B2 between adjacent disc modules 5 on its right end. The Nth low-level screening unit 3 has a multiple selection sieve 50 with a length of A1 between adjacent disc modules 5 on its left end. N-1 And the width is B N-1 The multiple selection screen has a 50mm aperture and the right end of the adjacent disc module 5 forms a length of A. N And the width is B N The sieve with a mesh size of 50 is selected, wherein: A1 to A N B1 to B N All values ​​increase sequentially, with N≥2. Preferably, there are two low-level screening sections 3. In the high-level screening section 2, the dimensions of A1 are 20-40mm and B1 are 20-40mm; in the first low-level screening section 3, the dimensions of A2 are 60mm and B2 are 60mm; in the second low-level screening section 3, the dimensions of A3 are 80mm and B3 are 80mm. The beneficial effect is that this setup is suitable for screening and reusing conventional solid materials.

[0039] One flow guide 4 is inclined between the high-level frame 11 and the low-level frame 12, and the remaining flow guides 4 are inclined between adjacent low-level frames 12. The upper end of the inclined guide plate 400 is located below the rightmost disc module 5 of the right-side screening section, and the lower end is located above the leftmost disc module 5 of the left-side screening section. The mixed material is thrown from above onto the disc module 5 at the left end of the low-level screening section 3 due to gravitational potential energy and inertial potential energy, and is subjected to high-purity re-selection by the re-selection sieve holes 50. Furthermore, the flow guide 4 preferably includes a flow guide member 40 with a bent structure. The vertical seat 401 of the flow guide member 400 is integrally connected to the lower left end of the inclined guide plate 400. The vertical seat 401 is connected to the end beam of the low-level frame 12 through a threaded part. The beneficial effect of this arrangement is that it has a good guiding effect.

[0040] The disc module 5 includes multiple longitudinally spaced discs 51 and annular grooves between adjacent discs 51. The discs 51 of adjacent disc modules 5 are arranged in an alternating manner, and the left and right ends of the discs 51 enter the annular grooves of the adjacent disc modules 5 to form sieve holes 50. The outer peripheral surface of the disc 51 is preferably a regular N-gon structure.

[0041] This novel multi-stage disc screen employs multiple screening sections with height differences. The rear section of each screening section has the same diameter as the front section of the adjacent section, but with a height difference. Material can be thrown from a higher position to a lower position at the height transition point, subjected to gravitational potential energy and the recoil force of the lower disc, thus disrupting the bridging of large materials and allowing smaller materials to separate within the corresponding screen openings, obtaining high-purity undersize material. The continuous operation of each screening section separates the screened material into various preset sizes of high-purity material. Its advantages are: firstly, the disc screen uses a stepped screening structure, quickly obtaining... The multi-stage structure allows for the separation of various high-purity screening materials, ensuring that the screening materials at the rear end of one disc screen section and the front end of the adjacent disc screen section are of the same size. This allows for direct application of the high-purity screening materials, significantly improving the processing efficiency and quality of the post-processing line. Secondly, materials only need to be screened once on this equipment to achieve high-purity screening, eliminating the need for multiple sorting and purification processes. This results in high sorting efficiency, reliable quality, reduced overall energy consumption, and low sorting costs. Thirdly, the disc screen has a flow guide section 4, which effectively guides the material flow, preventing it from scattering and mixing, further improving the sorting purity.

[0042] Furthermore, the multiple base frames 10 of the frame 1 are coaxially arranged in the front and rear directions and their heights decrease in sequence. The upper end of the first base frame 10 is connected to the high frame 11 through a threaded part, the upper end of the middle base frame 10 is connected to the low frame 12 through a threaded part, and the upper end and the lower right end of the last base frame 10 are both threaded to a low frame 12.

[0043] The base frame 10, the high-level frame 11, and the low-level frame 12 are three-dimensional rectangular frames. The advantage of this design is that it facilitates installation and fabrication.

[0044] Furthermore, the frame 1 includes a base frame comprising multiple right-angled steps with gradually decreasing height. A high-level frame 11 is installed on the upper surface of the base frame, a low-level frame 12 is installed on the upper surface of the middle right-angled step, and a low-level frame 12 is installed on the upper surface and right side of the last right-angled step. The advantages of this arrangement are: it facilitates manufacturing and provides a good installation reference.

[0045] 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. Preferably, the buffer blocks 41 are made of rubber or polytetrafluoroethylene. The beneficial effect is that this arrangement can further improve the guiding effect, so that the material travels in a predetermined direction.

[0046] Preferably, the guide member 40 further includes a lower baffle 402, with a small gap positioned above the leftmost disc 51. The beneficial effect is that this arrangement effectively prevents material from falling forward and reducing the sorting purity.

[0047] Furthermore, it also includes at least two discharge ports 6. The first discharge port 6 is located below the initial selection disc module 5 of the high-level screening section 2 and the secondary selection disc module 5 of the low-level screening section 3. The middle discharge port 6 is located below the rear selection disc module 5 of the front low-level screening section 3 and the secondary selection disc module 5 of the rear low-level screening section 3. The last discharge port 6 is located below the rear selection disc module 5 of the low-level screening section 3. Preferably, the horizontal cross-section of the discharge port 6 is a rectangular cylinder, and the dimensions of the horizontal cross-section decrease from top to bottom. The beneficial effect is that this arrangement allows materials of various sizes to enter the designated area, facilitating subsequent material transfer.

[0048] Furthermore, the disc module 5 also includes a rotating shaft 53 and several top rings 54. Multiple discs 51 are fixedly connected longitudinally at equal intervals along the middle of the rotating shaft 53, and multiple top rings 54 are fitted longitudinally at equal intervals. The two side walls of each top ring 54 are fitted to adjacent discs 51. Bearings 52 with mounting seats are sleeved on both sides of the rotating shaft 53. The bearings 52 of the multiple disc modules 5 are threaded laterally at equal intervals onto the high-position frame 11 and the low-position frame 12. The advantage of this arrangement is that it facilitates installation and adjustment.

[0049] Preferably, both the high-level frame 11 and the low-level frame 12 have vertical wall panels 13 on both sides, and the lower end of the wall panels 13 is fixedly connected to a bearing 52 with a seat. Preferably, the high-level frame 11 and the low-level frame 12 have closed side plates on their outer sides to form a closed cavity. The beneficial effect of this arrangement is that it can improve safety.

[0050] Furthermore, it also includes a lateral pressure ring 55 and an adjusting nut 56. The lateral pressure ring 55 is fitted at both ends of the rotating shaft 53 and fits against the outermost side of the disc 51. The adjusting nut 56 is connected to the threaded sections at both ends of the rotating shaft 53 and laterally presses against the lateral pressure ring 55. Longitudinal adjustment is achieved by stopping the adjusting nut at different threaded sections. A continuous longitudinal keyway is provided on the outer peripheral wall of the rotating shaft 53. The disc 51 slides longitudinally on the keyway, and the top ring 54 is fitted at a gap outside the keyway. Preferably, using discs 51 of different thicknesses, and adjusting the diameter and width of the top ring 54, can adjust A. N B N The size of the screen can be adjusted without changing the size of the disc 51. The advantage of this setup is that it allows for easy adjustment and enables the acquisition of various screen sizes.

[0051] Furthermore, the high-level screening unit 2 includes two drive motors 7. The first drive motor 7 is fixedly connected to the outside of the high-level frame 11 and the second drive motor 7 is fixedly connected to the left side of the high-level frame 11. The rotating shafts 53 of the multiple disc modules 5 on the left side of the high-level frame 11 are connected by a double-row chain drive system 8 on the left side, and one of the rotating shafts 53 is connected to the first drive motor 7 through a coupling.

[0052] The rotating shafts 53 of multiple disc modules 5 on the right end of the high-position frame 11 are connected by a double-row chain drive system 8 on the right end, and one of the rotating shafts 53 is connected to the second drive motor 7 through a coupling.

[0053] The driving and transmission structures of the low-level screening unit 3 are the same as those of the high-level screening unit 2. Its advantages are: the power transmission torque is stable, it has strong resistance to impact loads, and its overall movement is smooth.

[0054] 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 multi-step disc sieve, characterized in that, Includes: a frame (1), a high-level screening unit (2), multiple low-level screening units (3), and multiple flow guide units (4); The frame (1) includes a high frame (11) and multiple low frames (12). A low frame (12) is provided at the right end of the high frame (11), and a rear low frame (12) is provided at the right end of each front low frame (12), forming multiple right-angled material steps from high to low. The high-level screening unit (2) includes several disc modules (5) rotatably connected within the high-level frame (11), with initial screening holes (50) of length A1 and width B1 formed between adjacent disc modules (5). Multiple low-level screening units (3) are arranged horizontally coaxially from left to right. Multiple disc modules (5) of each low-level screening unit (3) are rotatably connected to a low-level frame (12). The first low-level screening unit (3) forms a multiple selection sieve (50) with a length of A1 and a width of B1 between the left end of the adjacent disc modules (5) and a subsequent selection sieve (50) with a length of A2 and a width of B2 between the right end of the adjacent disc modules (5). The Nth low-level screening unit (3) forms a multiple selection sieve (50) with a length of A1 between the left end of the adjacent disc modules (5). (N-1) And the width is B (N-1) The multiple selection of sieve holes (50) and the right end of the adjacent disc module (5) forms a length of A N And the width is B N The subsequent selection of sieve aperture (50), wherein: A1 to A N B1 to B N All increase sequentially, N≥2; One of the flow guides (4) is inclined between the high frame (11) and the low frame (12), and the other flow guides (4) are inclined between adjacent low frames (12). The upper end of its inclined guide plate (400) is located below the rightmost disc module (5) of the right screening section and the lower end is located above the leftmost disc module (5) of the left screening section. The mixed material is thrown from above onto the disc module (5) at the left end of the low screening section (3) due to gravitational potential energy and motion inertial potential energy, and is subjected to high-purity re-selection by the re-selection sieve hole (50). The disc module (5) includes multiple longitudinally spaced discs (51) and an annular groove between adjacent discs (51). The discs (51) of adjacent disc modules (5) are arranged in an alternating manner, and the left and right ends of the discs (51) enter the annular groove of the adjacent disc module (5) to form sieve holes (50).

2. The multi-step disc sieve according to claim 1, characterized in that, The multiple base frames (10) of the frame (1) are coaxial in the front and back and their heights decrease in sequence. The upper end of the first base frame (10) is threaded to the high frame (11), the upper end of the middle base frame (10) is threaded to the low frame (12), and the upper end and the lower right end of the last base frame (10) are both threaded to a low frame (12). The base frame (10), the high frame (11), and the low frame (12) are three-dimensional rectangular frames.

3. The multi-step disc sieve according to claim 1, characterized in that, The frame (1) includes a base frame, which includes multiple right-angled steps with gradually decreasing height. A high-level frame (11) is installed on the upper surface of the base frame, and a low-level frame (12) is installed on the upper surface of each right-angled step. A low-level frame (12) is also installed on the right side of the last right-angled step.

4. The multi-step 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 threadedly connected to the end beam of the low frame (12).

5. The multi-step disc sieve according to claim 4, characterized in that, The vertical seat (401) and the inclined guide plate (400) are provided with a buffer base block (41) in the triangular groove, and the two and the buffer base block (41) are fixedly connected by threaded parts.

6. The multi-step disc sieve according to any one of claims 1 to 5, characterized in that, There are two low-level screening units (3). In the high-level screening section (2), the size of A1 is 20-40mm, and the size of B1 is 20-40mm; In the first low-level screening section (3), the size of A2 is 60mm and the size of B2 is 60mm; In the second low-level screening section (3), the size of A3 is 80mm and the size of B3 is 80mm.

7. The multi-step disc sieve according to claim 1, characterized in that, It also includes at least two discharge ports (6), the first discharge port (6) is located below the initial selection disc module (5) of the high-level screening section (2) and the secondary selection disc module (5) of the low-level screening section (3), the middle discharge port (6) is located below the rear selection disc module (5) of the front low-level screening section (3) and the secondary selection disc module (5) of the rear low-level screening section (3), and the last discharge port (6) is located below the rear selection disc module (5) of the low-level screening section (3).

8. The multi-step disc sieve according to claim 1, characterized in that, The rotating shaft (53) of the disc module (5) is longitudinally and equally spaced with multiple discs (51) and multiple top rings (54) are longitudinally and equally spaced. The two side walls of each top ring (54) are attached to the adjacent discs (51). The two sides of the rotating shaft (53) are fitted with bearings (52). The bearings (52) of the multiple disc modules (5) are arranged laterally and equally spaced and threadedly connected to the vertical wall plates (13) of the high frame (11) and the low frame (12).

9. The multi-step disc sieve according to claim 8, characterized in that, By using discs of different thicknesses (51) and top rings of different diameters and widths (54), different A values ​​were obtained. N B N sieve holes.

10. The multi-step disc sieve according to claim 9, characterized in that, It also includes a lateral pressure ring (55) and an adjusting nut (56). The lateral pressure ring (55) is fitted at both ends of the rotating shaft (53) and fits against the outermost side of the disc (51). The adjusting nut (56) is connected to the threaded sections at both ends of the rotating shaft (53) and presses the lateral pressure ring (55) laterally. The longitudinal adjustment is achieved by adjusting the nut (56).

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