Single tank multi-channel vibrating screen separator

Abstract

The application discloses a single-groove multi-channel vibrating screen separator, which comprises a rack and a vibrating screen box body, the vibrating screen box body is connected with the rack through a plurality of first spring sheets, a power device and an eccentric transmission device are arranged on the rack, the power device is connected with the eccentric transmission device, one end of the vibrating screen box body is connected with the eccentric transmission device through a first connecting spring sheet, a screen assembly and a flap mechanism are arranged in the vibrating screen box body, and a flap driving device is arranged on the outer wall of the vibrating screen box body. The application can realize free switching of three-stage screening and four-stage screening according to actual requirements, realizes different screening requirements, and has the advantages of high efficiency and convenience.

Description

Technical Field

[0001] This invention relates to a screening machine, and more particularly to a single-tank multi-channel vibrating screening machine. Background Technology

[0002] During the threshing and re-drying process of tobacco leaves, threshing machines and air separators separate the tobacco leaves from the stems. After this process, the tobacco leaves are broken down into large, medium, and small pieces of varying sizes, as well as tobacco dust. Depending on production needs, the fragments need to be screened. Large tobacco pieces are returned to the main production line via air ducts; medium-sized tobacco pieces are used for high-end modular material production; small tobacco pieces are used for thin sheet production; and tobacco dust is packaged and processed separately.

[0003] Currently, vibrating screens only offer three-stage screening and lack advanced modular tobacco sheet screening capabilities, making it impossible to meet the requirements of four-stage screening. However, based on actual production batches, both three-stage and four-stage screening are necessary, requiring the equipment to be able to switch freely between the two modes. Therefore, a vibrating screen with multiple production modes is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a single-tank multi-channel vibrating screen to solve the technical problems in the prior art. It can freely switch between three-stage and four-stage screening according to actual needs, to meet different screening requirements, and has the advantages of high efficiency and convenience.

[0005] This invention provides a single-tank multi-channel vibrating screen, including a frame and a vibrating screen box. The vibrating screen box is connected to the frame via several first spring plates. A power unit and an eccentric transmission device are mounted on the frame. The power unit is connected to the eccentric transmission device. One end of the vibrating screen box is connected to the eccentric transmission device via a first connecting spring plate. A screen assembly and a flip-plate mechanism are mounted inside the vibrating screen box. A flip-plate drive device is mounted on the outer wall of the vibrating screen box.

[0006] In the aforementioned single-tank multi-channel vibrating screen, preferably, the screen assembly includes a primary screen, a secondary screen, and a tertiary screen. The length of the primary screen is less than the length of the vibrating screen box, the length of the secondary screen is less than the length of the primary screen, and the length of the tertiary screen is less than the length of the secondary screen. One end of each of the primary, secondary, and tertiary screens is fixedly connected to the side wall of the feed end of the vibrating screen box.

[0007] In the aforementioned single-tank multi-channel vibrating screen, preferably, the mesh size of the primary screen is 6.35mm × 6.35mm, the mesh size of the secondary screen is 4.5mm × 4.5mm, and the mesh size of the tertiary screen is 1.5mm × 1.5mm.

[0008] In the aforementioned single-tank multi-channel vibrating screen, preferably, the bottom of the vibrating screen box is provided with a first discharge pipe, a second discharge pipe, a third discharge pipe and a fourth discharge pipe. The inlet end of the first discharge pipe is aligned with the discharge end of the primary screen, the inlet end of the second discharge pipe is aligned with the discharge end of the secondary screen, the inlet end of the third discharge pipe is aligned with the discharge end of the tertiary screen, and the inlet end of the fourth discharge pipe is located in the middle of the bottom plate of the vibrating screen box.

[0009] In the aforementioned single-tank multi-channel vibrating screen, preferably, multiple lower fixing plates of spring sheets are evenly spaced along the length of the frame, and multiple upper fixing plates of spring sheets are evenly spaced along the length of the bottom of the vibrating screen box. The number of lower fixing plates of spring sheets is equal to the number of upper fixing plates of spring sheets. Adjacent lower fixing plates of spring sheets and upper fixing plates of spring sheets are connected by two first spring sheets. A first connecting seat is formed in the middle of the upper fixing plate of spring sheets closest to the eccentric transmission device.

[0010] In the aforementioned single-tank multi-channel vibrating screen, preferably, the eccentric transmission device includes a rotating shaft, a seated bearing, a driven pulley, a first eccentric bearing, and a second eccentric bearing. The rotating shaft is rotatably mounted on the frame via the two seated bearings. The first eccentric bearing and the second eccentric bearing are mounted on the rotating shaft. The driven pulley is fixed to one end of the rotating shaft and connected to the power device via a belt. A first connecting post is formed on the outer wall of the first eccentric bearing. A thread is formed at the end of the first connecting post. A second connecting seat is threaded onto the first connecting post. The second connecting seat is fixedly connected to one end of the first connecting spring plate, and the other end of the first connecting spring plate is fixedly connected to the first connecting seat.

[0011] In the aforementioned single-tank multi-channel vibrating screen, preferably, a counterweight base is provided between the frame and the vibrating screen box. A connecting plate is provided on the counterweight base. The number of connecting plates is the same as the number of the lower fixing plates of the spring sheet. Each connecting plate is connected to the lower fixing plate of the spring sheet through two second spring sheets. A third connecting seat is formed at one end of the counterweight base near the eccentric transmission device. A second connecting column is formed on the outer wall of the second eccentric bearing. A thread is formed at the end of the second connecting column. A fourth connecting seat is threadedly connected to the second connecting column. The fourth connecting seat is connected to the third connecting seat through a second connecting spring sheet.

[0012] In the aforementioned single-tank multi-channel vibrating screen, preferably, the power unit is a servo motor, and a drive pulley is fixedly installed on the output shaft of the servo motor. The drive pulley is connected to the driven pulley through the belt.

[0013] In the aforementioned single-tank multi-channel vibrating screen, preferably, the flipping mechanism includes a diversion baffle and a baffle mounting shaft, the flipping drive device is a rotary cylinder, the diversion baffle is rotatably connected to the lower ends of the two side walls of the vibrating screen box through the baffle mounting shaft, the rotary cylinder is fixed on the outer wall of the vibrating screen box, and the output shaft of the rotary cylinder is fixedly connected to one end of the baffle mounting shaft.

[0014] Compared with existing technologies, this invention includes a frame and a vibrating screen housing. The vibrating screen housing is connected to the frame via several first spring plates. A power unit and an eccentric transmission device are mounted on the frame. The power unit is connected to the eccentric transmission device. One end of the vibrating screen housing is connected to the eccentric transmission device via a first connecting spring plate. A screen assembly and a flip-plate mechanism are installed inside the vibrating screen housing. A flip-plate drive device is installed on the outer wall of the vibrating screen housing. This invention, through the flip-plate mechanism, allows for switching of the number of screens in operation, thereby enabling conversion between three-stage and four-stage screening, which can be adjusted according to requirements. It not only meets diverse operational needs but also has the advantage of simple adjustment, greatly improving work efficiency. Attached Figure Description

[0015] Figure 1 This is an isometric view of the present invention;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of a partial structure;

[0018] Figure 4 This is a structural diagram of the power unit and the eccentric transmission device;

[0019] Figure 5 This is a structural schematic diagram of the vibrating screen box;

[0020] Figure 6 This is a cross-sectional view of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Vibrating screen box; 3. First spring plate; 4. First connecting spring plate; 5. Primary screen; 6. Secondary screen; 7. Tertiary screen; 8. First discharge pipe; 9. Second discharge pipe; 10. Third discharge pipe; 11. Fourth discharge pipe; 12. Lower fixing plate of spring plate; 13. Upper fixing plate of spring plate; 14. First connecting seat; 15. Rotary shaft; 16. Bearing with seat; 17. Driven pulley; 18. First eccentric bearing; 19. Second eccentric bearing; 20. Belt; 21. First connecting column; 22. Second connecting seat; 23. Counterweight base; 24. Connecting plate; 25. Second spring plate; 26. Third connecting seat; 27. Second connecting column; 28. Fourth connecting seat; 29. ​​Second connecting spring plate; 30. Servo motor; 31. Drive pulley; 32. Diverting baffle; 33. Baffle mounting shaft; 34. Rotary cylinder. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Embodiments of the present invention: such as Figures 1-6 As shown, a single-tank multi-channel vibrating screen includes a frame 1 and a vibrating screen box 2. The upper part of the frame 1 is a cuboid frame structure, and the lower part is a support leg structure. The vibrating screen box 2 is connected to the frame 1 through several first spring plates 3. A power unit and an eccentric transmission device are provided on the frame 1. The power unit is connected to the eccentric transmission device. One end of the vibrating screen box 2 is connected to the eccentric transmission device through a first connecting spring plate 4. A screen assembly and a flipping mechanism are provided inside the vibrating screen box 2. A flipping drive device is provided on the outer wall of the vibrating screen box 2.

[0024] The vibrating screen box 2 is a rectangular box. The screen assembly inside the vibrating screen box 2 can perform multi-stage screening of tobacco leaf fragments as needed. The power unit is used to provide driving force for the eccentric transmission device, which is used to drive the vibrating screen box 2 to vibrate, thereby realizing the screening of tobacco leaf fragments.

[0025] In one specific embodiment, the screen assembly includes a primary screen 5, a secondary screen 6, and a tertiary screen 7. The length of the primary screen 5 is less than the length of the vibrating screen box 2, the length of the secondary screen 6 is less than the length of the primary screen 5, and the length of the tertiary screen 7 is less than the length of the secondary screen 6. One end of each of the primary screen 5, the secondary screen 6, and the tertiary screen 7 is fixedly connected to the side wall of the feed end of the vibrating screen box 2.

[0026] In this embodiment, the first-level screen 5 is located on the top layer, the second-level screen 6 is located in the middle layer, and the third-level screen 7 is located on the bottom layer. The three screens are designed with different lengths so that tobacco leaf fragments of different sizes can fall at different positions on the bottom plate of the vibrating screen box 2 for easy collection.

[0027] Furthermore, the mesh size of the primary screen 5 is 6.35mm × 6.35mm, the mesh size of the secondary screen 6 is 4.5mm × 4.5mm, and the mesh size of the tertiary screen 7 is 1.5mm × 1.5mm. The bottom of the vibrating screen box 2 is equipped with a first discharge pipe 8, a second discharge pipe 9, a third discharge pipe 10, and a fourth discharge pipe 11. The inlet end of the first discharge pipe 8 is aligned with the outlet end of the primary screen 5, the inlet end of the second discharge pipe 9 is aligned with the outlet end of the secondary screen 6, the inlet end of the third discharge pipe 10 is aligned with the outlet end of the tertiary screen 7, and the inlet end of the fourth discharge pipe 11 is located in the middle of the bottom plate of the vibrating screen box 2. The first discharge pipe 8, the second discharge pipe 9, and the third discharge pipe 10 are all arranged along the width direction of the vibrating screen box 2, and their lengths are all greater than the width of the vibrating screen box 2. The ends of the first discharge pipe 8, the second discharge pipe 9, and the third discharge pipe 10 that extend beyond the vibrating screen box 2 are designed with downward bends to facilitate the installation of receiving bags. The fourth discharge pipe 11 is used to discharge tobacco dust, which can be directly conveyed away by the conveyor belt. Therefore, the fourth discharge pipe 11 is a vertically arranged straight pipe structure.

[0028] Tobacco leaf fragments with a size ≥ 6.35mm × 6.35mm move along the primary screen 5 and eventually fall into the first discharge pipe 8. Tobacco leaf fragments with a size between 6.35mm × 6.35mm and 4.5mm × 4.5mm move along the secondary screen 6 and eventually fall into the second discharge pipe 9. Tobacco leaf fragments with a size between 4.5mm × 4.5mm and 1.5mm × 1.5mm move along the tertiary screen 7 and eventually fall into the third discharge pipe 10. Tobacco leaf fragments with a size ≤ 1.5mm × 1.5mm move along the bottom plate of the vibrating screen box 2 and enter the fourth discharge pipe 11. Tobacco leaves of different sizes are collected separately through different discharge pipes.

[0029] Furthermore, multiple lower fixing plates 12 of spring sheets are equally spaced along the length of the frame 1, and multiple upper fixing plates 13 of spring sheets are equally spaced along the length of the bottom of the vibrating screen box 2. The number of lower fixing plates 12 of spring sheets is equal to the number of upper fixing plates 13 of spring sheets. Adjacent lower fixing plates 12 and upper fixing plates 13 of spring sheets are connected by two first spring sheets 3. A first connecting seat 14 is formed in the middle of the upper fixing plate 13 of spring sheets closest to the eccentric transmission device.

[0030] In this embodiment, the number of lower fixing plates 12 and upper fixing plates 13 of the spring sheet is preferably set to three. All three upper fixing plates 13 are set at a 45° angle to the horizontal plane, and all three lower fixing plates 12 are also set at a 45° angle to the horizontal plane. The lower fixing plates 12 and upper fixing plates 13 are arranged parallel to each other. In their natural state, the three upper fixing plates 13 and three lower fixing plates 12 are opposite each other. A pair of opposite lower fixing plates 12 and upper fixing plates 13 are connected by two first spring plates 3, which are arranged at both ends of the lower fixing plates 12 and upper fixing plates 13. This structural arrangement improves the vibration effect of the vibrating screen box 2 and extends the service life of the first spring plates 3.

[0031] Furthermore, the eccentric transmission device includes a rotating shaft 15, a seated bearing 16, a driven pulley 17, a first eccentric bearing 18, and a second eccentric bearing 19. The rotating shaft 15 is rotatably mounted on the frame 1 via two seated bearings 16. The first eccentric bearing 18 and the second eccentric bearing 19 are mounted on the rotating shaft 15. The driven pulley 17 is fixed at one end of the rotating shaft 15 and is connected to the power device via a belt 20. A first connecting post 21 is formed on the outer wall of the first eccentric bearing 18. A thread is formed at the end of the first connecting post 21. A second connecting seat 22 is threaded onto the first connecting post 21. The second connecting seat 22 is fixedly connected to one end of the first connecting spring plate 4, and the other end of the first connecting spring plate 4 is fixedly connected to the first connecting seat 14.

[0032] The position of the second connecting seat 22 can be adjusted by the threaded connection between the second connecting seat 22 and the first connecting post 21, thereby overcoming production errors and making installation more convenient.

[0033] Furthermore, a counterweight base 23 is provided between the frame 1 and the vibrating screen box 2. A connecting plate 24 is provided on the counterweight base 23. The number of connecting plates 24 is the same as the number of spring plate lower fixing plates 12. Each connecting plate 24 is connected to the spring plate lower fixing plate 12 through two second spring plates 25. A third connecting seat 26 is formed at one end of the counterweight base 23 near the eccentric transmission device. A second connecting column 27 is formed on the outer wall of the second eccentric bearing 19. The end of the second connecting column 27 is threaded. A fourth connecting seat 28 is threadedly connected to the second connecting column 27. The fourth connecting seat 28 is connected to the third connecting seat 26 through a second connecting spring plate 29.

[0034] In this embodiment, there are three connecting plates 24. The connecting plates 24 are also set at a 45° angle to the horizontal plane. The connecting plates 24 are arranged parallel to the lower fixing plate 12 of the spring sheet. The second spring sheet 25 is connected to the middle of the lower fixing plate 12 and the connecting plates 24. The counterweight base 23 increases the vibration force, improves the screening effect, and also reduces the resonance phenomenon of the vibrating screen during operation, ensuring operational stability.

[0035] Furthermore, the power unit is a servo motor 30, and a drive pulley 31 is fixedly mounted on the output shaft of the servo motor 30. The drive pulley 31 is connected to the driven pulley 17 via a belt 20. The flipping mechanism includes a diverting baffle 32 and a baffle mounting shaft 33. The flipping drive device is a rotary cylinder 34. The diverting baffle 32 is rotatably connected to the lower ends of the two side walls of the vibrating screen box 2 via the baffle mounting shaft 33. The rotary cylinder 34 is fixed on the outer wall of the vibrating screen box 2, and the output shaft of the rotary cylinder 34 is fixedly connected to one end of the baffle mounting shaft 33.

[0036] Driven by the rotary cylinder 34, the diversion baffle 32 can be in a horizontal or vertical state. When the diversion baffle 32 is in a horizontal state, the second discharge pipe 9 is blocked, which is approximately equivalent to three-stage screening. When the diversion baffle 32 is in a vertical state, the second discharge pipe 9 works normally, achieving four-stage screening.

[0037] The working principle of this invention is as follows: In the normal production mode, the rotary cylinder 34 is started and rotated 90° clockwise to fix itself, which drives the diversion baffle 32 to move synchronously and cover the second discharge pipe 9.

[0038] The servo motor 30 operates, driving the driven pulley 17 to rotate via the driving pulley 31 and belt 20. The driven pulley 17 drives the rotating shaft 15 to rotate, which in turn drives the first eccentric bearing 18 and the second eccentric bearing 19. The first eccentric bearing 18 and the second eccentric bearing 19 perform simple harmonic reciprocating motion. The first eccentric bearing 18 transmits the motion to the vibrating screen housing 2 via the first connecting spring plate 4. One end of the first spring plate 3 moves together with the vibrating screen housing 2, while the other end is connected to the stationary frame 1. Therefore, the first spring plate 3 undergoes significant elastic deformation, which transmits force to the vibrating screen housing 2, generating vibration. The counterweight base 23 is connected to the second eccentric bearing 19 via the second connecting spring plate 29, operating on the same principle as the vibration of the vibrating screen housing 2. The counterweight base 23 increases the vibration force, improves the screening effect, and also reduces resonance during operation, ensuring operational stability.

[0039] When the equipment starts working, tobacco leaves fall from the feed end of the vibrating screen box 2, that is, above the end near the servo motor 30. Under vibration, tobacco leaves smaller than 6.35mm × 6.35mm pass through the screen holes of the primary screen 5 and fall. The remaining tobacco leaves move forward by vibration and fall into the first discharge pipe 8, through which they are returned to the main production line. The tobacco leaves falling onto the secondary screen 6 are screened again. Tobacco leaves smaller than 4.5mm × 4.5mm pass through the mesh of the secondary screen 6 and fall onto the tertiary screen 7. The remaining tobacco leaves move forward by vibration. Since the feed inlet of the second discharge pipe 9 is covered, the tobacco leaves enter the first discharge pipe 8 along the diversion baffle 32 and are returned to the main production line through this channel. The tobacco leaves on the third-stage screen 7 continue to be screened. Tobacco leaves smaller than 1.5mm × 1.5mm fall through the screen holes onto the bottom plate of the vibrating screen box 2. Most of the tobacco leaves passing through the third-stage screen 7 are tobacco dust. The tobacco leaves on the third-stage screen 7 move forward due to vibration and fall into the third discharge pipe 10 for sheet production, while the tobacco dust enters the fourth discharge pipe 11 under vibration for collection and centralized processing. At this point, the equipment completes the three-stage screening.

[0040] In the high-end material production mode, the rotary cylinder 34 rotates 90° counterclockwise and then fixes itself, driving the diversion baffle 32 to rotate synchronously, and the diversion baffle 32 is in a vertical state. At this time, tobacco leaves with a size smaller than 6.35mm×6.35mm and greater than or equal to 4.5mm×4.5mm fall into the second discharge pipe 9 through the secondary screen 6 and are collected for high-end module material production. The remaining tobacco leaves are screened as described above, and the equipment completes four-stage screening.

[0041] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A single-tank multi-channel vibrating screen, comprising a frame (1) and a vibrating screen housing (2), characterized in that: The vibrating screen box (2) is connected to the frame (1) through several first spring plates (3). The frame (1) is provided with a power device and an eccentric transmission device. The power device is connected to the eccentric transmission device. One end of the vibrating screen box (2) is connected to the eccentric transmission device through a first connecting spring plate (4). The vibrating screen box (2) is provided with a screen assembly and a flip plate mechanism. The outer wall of the vibrating screen box (2) is provided with a flip plate drive device. The screen assembly includes a primary screen (5), a secondary screen (6), and a tertiary screen (7). The length of the primary screen (5) is less than the length of the vibrating screen box (2). The length of the secondary screen (6) is less than the length of the primary screen (5). The length of the tertiary screen (7) is less than the length of the secondary screen (6). One end of each of the primary screen (5), the secondary screen (6), and the tertiary screen (7) is fixedly connected to the side wall of the feed end of the vibrating screen box (2). The bottom of the vibrating screen box (2) is provided with a first discharge pipe (8), a second discharge pipe (9), a third discharge pipe (10) and a fourth discharge pipe (11). The feed end of the first discharge pipe (8) is aligned with the discharge end of the first-stage screen (5), the feed end of the second discharge pipe (9) is aligned with the discharge end of the second-stage screen (6), the feed end of the third discharge pipe (10) is aligned with the discharge end of the third-stage screen (7), and the feed end of the fourth discharge pipe (11) is located in the middle of the bottom plate of the vibrating screen box (2). The flipping mechanism includes a diversion baffle (32) and a baffle mounting shaft (33). The flipping drive device is a rotary cylinder (34). The diversion baffle (32) is rotatably connected to the lower ends of the two side walls of the vibrating screen box (2) through the baffle mounting shaft (33). The rotary cylinder (34) is fixed on the outer wall of the vibrating screen box (2). The output shaft of the rotary cylinder (34) is fixedly connected to one end of the baffle mounting shaft (33). The flip-plate driving device can drive the diversion baffle (32) to be in a horizontal or vertical state. When the diversion baffle (32) is in a horizontal state, the second discharge pipe (9) is blocked, and the tobacco leaves that have not passed through the secondary screen (6) enter the first discharge pipe (8) along the diversion baffle (32) to achieve three-stage screening. When the diversion baffle (32) is in a vertical state, the second discharge pipe (9) works normally to achieve four-stage screening.

2. The single-tank multi-channel vibrating screen according to claim 1, characterized in that: The mesh size of the primary screen (5) is 6.35 mm × 6.35 mm, the mesh size of the secondary screen (6) is 4.5 mm × 4.5 mm, and the mesh size of the tertiary screen (7) is 1.5 mm × 1.5 mm.

3. The single-tank multi-channel vibrating screen according to claim 1, characterized in that: Multiple lower fixing plates (12) of spring sheets are equally spaced along the length of the frame (1), and multiple upper fixing plates (13) of spring sheets are equally spaced along the length of the bottom of the vibrating screen box (2). The number of lower fixing plates (12) of spring sheets is equal to the number of upper fixing plates (13) of spring sheets. Adjacent lower fixing plates (12) and upper fixing plates (13) of spring sheets are connected by two first spring sheets (3). A first connecting seat (14) is formed in the middle of the upper fixing plate (13) of spring sheet closest to the eccentric transmission device.

4. The single-tank multi-channel vibrating screen according to claim 3, characterized in that: The eccentric transmission device includes a rotating shaft (15), a seated bearing (16), a driven pulley (17), a first eccentric bearing (18), and a second eccentric bearing (19). The rotating shaft (15) is rotatably mounted on the frame (1) via the two seated bearings (16). The first eccentric bearing (18) and the second eccentric bearing (19) are mounted on the rotating shaft (15). The driven pulley (17) is fixed at one end of the rotating shaft (15) and connected to the power device via a belt (20). A first connecting post (21) is formed on the outer wall of the first eccentric bearing (18). A thread is formed at the end of the first connecting post (21). A second connecting seat (22) is threaded onto the first connecting post (21). The second connecting seat (22) is fixedly connected to one end of the first connecting spring plate (4). The other end of the first connecting spring plate (4) is fixedly connected to the first connecting seat (14).

5. The single-tank multi-channel vibrating screen according to claim 4, characterized in that: A counterweight base (23) is provided between the frame (1) and the vibrating screen box (2). A connecting plate (24) is provided on the counterweight base (23). The number of connecting plates (24) is the same as the number of the lower fixing plates (12) of the spring sheet. Each connecting plate (24) is connected to the lower fixing plate (12) of the spring sheet through two second spring sheets (25). A third connecting seat (26) is formed at one end of the counterweight base (23) near the eccentric transmission device. A second connecting column (27) is formed on the outer wall of the second eccentric bearing (19). The end of the second connecting column (27) is threaded. A fourth connecting seat (28) is threaded on the second connecting column (27). The fourth connecting seat (28) is connected to the third connecting seat (26) through a second connecting spring sheet (29).

6. The single-tank multi-channel vibrating screen according to claim 5, characterized in that: The power unit is a servo motor (30), and an active pulley (31) is fixedly installed on the output shaft of the servo motor (30). The active pulley (31) is connected to the driven pulley (17) through the belt (20).

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