Efficient classifying screen of compound classificator
By setting up screening components arranged vertically and horizontally and designing multiple feed ports in the screening box of the duplex fine separator, combined with the drive of a vibrating motor, the problem of low grading screening efficiency is solved, and efficient screening of grain materials and centralized treatment of impurities are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI HELIDA GRAIN SELECTING MACHINERY TECHCO
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
The existing double-stage grain sorting machine has low grading and screening efficiency, resulting in slow grain processing speed and difficulty in handling impurities.
Two sets of screening components are arranged vertically inside the screening box and driven by a vibration motor. Combined with multiple feed inlets and guide plates, the grain material is dispersed and screened to process large and small particle impurities separately.
It improves the screening efficiency of grain materials, simplifies the impurity handling process, and facilitates the centralized processing and collection of large and small particle impurities.
Smart Images
Figure CN224237556U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of grain processing, and in particular discloses a high-efficiency grading sieve for a compound fine separator. Background Technology
[0002] Grain screening devices are essential equipment in the grain processing process. During harvesting, transportation and processing, grain inevitably gets mixed with some impurities, including dirt, dust, stones, husks and spoiled grain. The processing volume is very large, the processing speed is fast, and the feeding of grain is also very difficult. Therefore, it is necessary to screen the grain first to obtain clean grain.
[0003] The existing double-stage grain separator includes a lifting device, a frame, a grain dispersing device, an air separator, a gravity screen, and a grading screen. The raw grain is lifted to the grain dispersing device, where it is evenly spread. The air separator removes light impurities such as dust and rice husks. The gravity screen removes lighter impurities (empty husks, damaged grain, etc.). Finally, the grading screen separates large and small particles of impurities, ultimately achieving the fine selection of the grain material.
[0004] Regarding the prior art mentioned above, the inventors discovered that in order to make the overall structure of the double-selection machine reasonable, the existing grading screens are usually narrow, resulting in low screening efficiency. Utility Model Content
[0005] In order to ensure the overall structural rationality of the compound separator and improve the screening efficiency of the grading screen, this application provides a high-efficiency grading screen for the compound separator.
[0006] This application provides a high-efficiency grading sieve for a compound separator, which adopts the following technical solution:
[0007] A high-efficiency grading screen for a compound sorting machine includes a frame, a screening box, and a vibrating motor. The screening box is installed on the side of the frame away from the gravity screen. A partition is fixed inside the screening box, and the inner wall of the screening box and the partition form two screening spaces arranged vertically. Screening components are installed in the screening spaces. A first feed inlet for entering the upper screening space is opened on the side of the screening box near the gravity screen, and a second feed inlet for entering the lower screening space is also opened on the side of the screening box near the gravity screen. The vibrating motor drives the screening box to vibrate back and forth.
[0008] By adopting the above technical solution, two sets of screening components arranged vertically are set in the screening box, which enables the grading screen of the same width to screen more materials and improve the screening efficiency of grain materials.
[0009] Optionally, the screening box is fixed with a feed hopper having an upper opening on the side near the gravity screen, the feed hopper has a side opening on the side near the screening box, and a feed channel communicating with the first feed inlet is fixed inside the feed hopper.
[0010] By adopting the above technical solution, part of the grain material falling from the gravity screen enters the upper screening space through the feeding channel, while the other part falls into the lower screening space through the bottom wall of the feeding bin, making it easier for the grain material to enter the screening box.
[0011] Optionally, multiple first feed inlets are provided, and the multiple first feed inlets are equally spaced on the side of the screening box.
[0012] By adopting the above technical solution, multiple first feed inlets are equally spaced on the side of the screening box, which makes the grain materials entering the upper and lower screening spaces more dispersed, facilitating the screening of grain materials.
[0013] Optionally, the screening assembly includes a first screening plate and a second screening plate, which are fixedly mounted on the inner wall of the screening box from top to bottom. The diameter of the screening holes on the first screening plate is larger than that on the second screening plate. An inclined first guide plate is fixed to the upper surface of the first screening plate away from the feed hopper. A first discharge port for material that has not passed through the first screening plate is opened on the side wall of the screening box away from the feed hopper. A second discharge port for material between the first screening plate and the second screening plate is opened on the side wall of the screening box away from the feed hopper. An inclined second guide plate is fixed to the side of the partition and the bottom plate of the screening box away from the feed hopper. A third discharge port for material that has passed through the second screening plate is opened on the side wall of the screening box away from the feed hopper.
[0014] By adopting the above technical solution, after the grain material enters the screening space, under the action of the first screening plate and the vibrating motor, large particles of impurities remain on the first screening plate, while small particles of impurities and grain material pass through the first screening plate; under the action of the second screening plate and the vibrating motor, the grain material remains on the second screening plate, while small particles of impurities pass through the first screening plate; the grain material is discharged through the second discharge port, and under the action of the first guide plate, large particles of material are discharged from the first discharge port, while small particles of material are discharged from the third discharge port under the action of the second guide plate.
[0015] Optionally, a first discharge channel is fixed on the side wall of the screening box at the first discharge port, and the first discharge channel has a side opening on the side near the screening box.
[0016] By adopting the above technical solution, large particles of impurities discharged from both the upper and lower screening spaces can enter the first discharge channel, facilitating the centralized processing of large particles of impurities.
[0017] Optionally, a second discharge channel is fixed to the side wall of the screening box at the second discharge port, and the second discharge channel has a side opening on the side near the screening box.
[0018] By adopting the above technical solution, the grain materials discharged from both the upper and lower screening spaces can enter the second discharge channel, which facilitates the centralized collection of grain materials.
[0019] Optionally, a third discharge channel is fixed at the third discharge port on the side wall of the screening box, and the third discharge channel has a side opening on the side near the screening box.
[0020] By adopting the above technical solution, small particle impurities discharged from both the upper and lower screening spaces can enter the third discharge channel, facilitating the centralized processing of small impurity particles.
[0021] Optionally, the frame includes a frame body and rollers, with the rollers mounted on the bottom of the frame body.
[0022] By adopting the above technical solution, it is convenient to move the grading screen and the gravity screen.
[0023] Optionally, the frame further includes a fixing plate and threaded legs. The fixing plate is fixed to the bottom of the frame body, and the threaded legs are vertically arranged and threadedly mounted on the fixing plate.
[0024] By adopting the above technical solution, after the grading screen and the density screen are moved to the screening position, the threaded support leg is rotated and the threaded support leg is lowered so that the bottom surface of the threaded support leg contacts the ground. This makes it difficult for the grading screen and the density screen to move during screening, which facilitates grain screening.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. Two sets of screening components arranged vertically are set in the screening box, so that the grading screen of the same width can screen more materials, thereby improving the screening efficiency of grain materials.
[0027] 2. Grain material falling from the gravity screen, part of the grain material enters the upper screening space through the feed channel, and the other part of the grain material falls into the lower screening space through the bottom wall of the feed bin, which facilitates the grain material entering the screening box;
[0028] 3. Multiple first feed inlets are equally spaced on the side of the screening box, which makes the grain materials entering the upper and lower screening spaces more dispersed, facilitating the screening of grain materials. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of this application.
[0030] Figure 2 This is a schematic diagram of the internal structure of the screening box, feeding hopper and second discharge channel of this application.
[0031] Figure 3 This is a structural schematic diagram showing the shape of the first guide plate and the position of the first discharge port.
[0032] Figure 4 This is a structural schematic diagram showing the shape of the second guide plate and the position of the third discharge port.
[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Frame body; 12. Roller; 13. Fixing plate; 14. Threaded support leg; 2. Screening box; 21. Partition plate; 22. First feed inlet; 23. Second feed inlet; 24. First discharge outlet; 25. Second discharge outlet; 26. Third discharge outlet; 3. Vibrating motor; 4. Screening assembly; 41. First screening plate; 42. Second screening plate; 43. First guide plate; 44. Second guide plate; 5. Feed bin; 51. Feed channel; 6. First discharge channel; 7. Second discharge channel; 8. Third discharge channel; 100. Gravity screen. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0035] This application discloses a high-efficiency grading sieve for a compound separator. (Refer to...) Figure 1 and Figure 2 A high-efficiency grading screen for a compound separator includes a frame 1, a screening box 2, a vibrating motor 3, a screening assembly 4, and a feed hopper 5. The screening box 2 is installed on the side of the frame 1 away from the gravity screen 100. The vibrating motor 3 drives the screening box 2 to vibrate back and forth. The screening assembly 4 is located inside the screening box 2. The feed hopper 5 is used to allow the material discharged from the gravity screen 100 to flow into the screening box 2.
[0036] Reference Figure 1 The frame 1 includes a frame body 11, rollers 12, fixing plates 13, and threaded legs 14. Four rollers 12 are installed at the four corners of the bottom of the frame body 11. Six fixing plates 13 are symmetrically fixed to the bottom of the frame body 11. Six threaded legs 14 are vertically arranged and threaded onto the fixing plates 13. Before the frame 1 moves, rotating the threaded legs 14 raises them, lifting their bottom surfaces off the ground, facilitating movement. After the frame 1 moves to the screening position, rotating the threaded legs 14 lowers them, bringing their bottom surfaces into contact with the ground, preventing the frame 1 from shifting during screening and facilitating grain screening.
[0037] Reference Figure 1 and Figure 2 The screening box 2 is inclined. A partition 21 parallel to the bottom surface of the screening box 2 is fixed inside the screening box 2. The inner wall of the screening box 2 and the partition 21 form two screening spaces arranged vertically. Multiple first feed ports 22 for entering the upper screening space are opened on the side of the screening box 2 near the specific gravity screen 100. A second feed port 23 for entering the lower screening space is also opened on the side of the screening box 2 near the specific gravity screen 100. The feed bin 5 is fixed to the side of the screening box 2 near the specific gravity screen 100 by bolts. An upper opening is opened on the upper surface of the feed bin 5, and a side opening is opened on the side of the feed bin 5 near the screening box 2. The bottom wall of the feed bin 5 is inclined and communicates with the second feed port 23. The feed bin 5 has the same number of feed channels 51 as the first feed ports 22, and the feed channels 51 communicate with the first feed ports 22. Grain material discharged from the gravity screen 100 can enter the feed hopper 5. A portion of the grain material entering the feed hopper 5 enters the feed channel 51, and through the feed channel 51, it enters the upper screening space. Another portion of the grain material entering the feed hopper 5 enters the bottom wall of the feed hopper 5 through the gap between adjacent feed channels 51. Under the action of the inclined bottom wall of the feed hopper 5, the grain material located in the gap between adjacent feed channels 51 can enter the lower screening space. This facilitates the entry of grain material into the screening box 2. Simultaneously, multiple first feed inlets 22 are evenly spaced, making the grain material entering the upper and lower screening spaces more dispersed, facilitating the screening of the grain material.
[0038] Reference Figure 2-4Two sets of screening components 4 are provided, located in the upper and lower screening spaces respectively. Each screening component 4 includes a first screening plate 41, a second screening plate 42, a first guide plate 43, and a second guide plate 44. The first screening plate 41 and the second screening plate 42 are fixed to the inner wall of the screening box 2 from top to bottom. The diameter of the screening holes on the first screening plate 41 is larger than the diameter of the screening holes on the second screening plate 42. Two first guide plates 43 are inclined and symmetrically fixed to the upper surface of the first screening plate 41 on the side facing away from the feed hopper 5. A first outlet 24 for grain material that has not passed through the first screening plate 41 is provided on the side wall of the screening box 2 at the end of the first guide plate 43 facing away from the feed hopper 5. A second outlet 25 for grain material between the first screening plate 41 and the second screening plate 42 is provided on the side wall of the screening box 2 at the end facing away from the feed hopper 5. Two second guide plates 44 are inclined. Two first guide plates 43 located in the upper screening space are symmetrically fixed on the upper surface of the partition 21, facing away from the feed hopper 5. Two first guide plates 43 located in the lower screening space are symmetrically fixed on the upper surface of the bottom plate of the screening box 2, facing away from the feed hopper 5. A third outlet 26 for the discharge of material passing through the second screening plate 42 is provided on the side wall of the screening box 2 at the end of the second guide plate 44 facing away from the feed hopper 5.
[0039] Reference Figure 2-4 After the grain material enters the screening space, under the action of the first screening plate 41 and the vibrating motor 3, large particles of impurities remain on the first screening plate 41, while small particles of impurities and grain material pass through the first screening plate 41; under the action of the second screening plate 42 and the vibrating motor 3, the grain material remains on the second screening plate 42, while small particles of impurities pass through the first screening plate 41; the grain material is discharged through the second discharge port 25, and under the action of the first guide plate 43, large particles of material are discharged from the first discharge port 24, and under the action of the second guide plate 44, small particles of material are discharged from the third discharge port 26.
[0040] Reference Figure 2-4 A first discharge channel 6 is fixed to the side wall of the screening box 2 at the first discharge port 24. The first discharge channel 6 has a side opening near the screening box 2, allowing large particles discharged from both the upper and lower screening spaces to enter the first discharge channel 6 for centralized processing. A second discharge channel 7 is fixed to the side wall of the screening box 2 at the second discharge port 25. The second discharge channel 7 has a side opening near the screening box 2, allowing grain materials discharged from both the upper and lower screening spaces to enter the second discharge channel 7 for centralized collection. A third discharge channel 8 is fixed to the side wall of the screening box 2 at the third discharge port 26. The third discharge channel 8 has a side opening near the screening box 2, allowing small particles discharged from both the upper and lower screening spaces to enter the third discharge channel 8 for centralized processing.
[0041] The implementation principle of the high-efficiency grading screen of the compound separator according to an embodiment of this application is as follows: During the screening of grain materials, the grain materials discharged from the gravity screen 100 can fall into the feed hopper 5. Part of the grain materials entering the feed hopper 5 enter the feed channel 51 and enter the screening space above through the feed channel 51. The other part of the grain materials entering the feed hopper 5 enters the bottom wall of the feed hopper 5 through the gap between adjacent feed channels 51. Under the action of the inclined bottom wall of the feed hopper 5, the grain materials located in the gap between adjacent feed channels 51 can enter the screening space below.
[0042] After the grain material enters the screening space, large particles of impurities remain on the first screening plate 41 under the action of the first screening plate 41 and the vibrating motor 3. Under the action of the first guide plate 43, large particles of impurities are discharged from the first discharge port 24. Under the action of the second screening plate 42 and the vibrating motor 3, the grain material remains on the second screening plate 42. The grain material is discharged from the second discharge port 25. Under the action of the second screening plate 42 and the vibrating motor 3, small particles of impurities pass through the second screening plate 42. Under the action of the second guide plate 44, small particles of impurities are discharged from the third discharge port 26.
[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A high-efficiency grading sieve for a compound fine-selection machine, characterized in that: The machine includes a frame (1), a screening box (2), and a vibrating motor (3). The screening box (2) is installed on the side of the frame (1) away from the gravity screen (100). A partition (21) is fixed inside the screening box (2). The inner wall of the screening box (2) and the partition (21) form two screening spaces arranged vertically. A screening component (4) is installed in the screening space. The screening box (2) has a first feed port (22) for entering the upper screening space on the side near the gravity screen (100). The screening box (2) also has a second feed port (23) for entering the lower screening space on the side near the gravity screen (100). The vibrating motor (3) is used to drive the screening box (2) to vibrate back and forth.
2. The high-efficiency grading sieve of the compound fine-selection machine according to claim 1, characterized in that: The screening box (2) has a feed hopper (5) with an upper opening fixed on the side near the gravity screen (100). The feed hopper (5) has a side opening on the side near the screening box (2), and a feed channel (51) connected to the first feed port (22) is fixed inside the feed hopper (5).
3. The high-efficiency grading sieve of a compound fine-selection machine according to claim 2, characterized in that: Multiple first feed inlets (22) are provided, and multiple first feed inlets (22) are equally spaced on the side of the screening box (2).
4. The high-efficiency grading sieve of a compound fine-selection machine according to claim 2, characterized in that: The screening assembly (4) includes a first screening plate (41) and a second screening plate (42). The first screening plate (41) and the second screening plate (42) are fixed to the inner wall of the screening box (2) from top to bottom. The diameter of the screening holes on the first screening plate (41) is larger than the diameter of the screening holes on the second screening plate (42). An inclined first guide plate (43) is fixed on the upper surface of the first screening plate (41) on the side away from the feed hopper (5). The side wall of the screening box (2) has an opening at the end of the first guide plate (43) away from the feed hopper (5) for the outflow of unpassed material. The first discharge port (24) of the material of the first screening plate (41) is provided. The side wall of the screening box (2) is provided with a second discharge port (25) for the material between the first screening plate (41) and the second screening plate (42) to flow out. The partition plate (21) and the bottom plate of the screening box (2) are both fixed with a second guide plate (44) that is inclined on the side away from the feed hopper (5). The side wall of the screening box (2) is provided with a third discharge port (26) for the material passing through the second screening plate (42) to flow out at the end of the second guide plate (44) away from the feed hopper (5).
5. The high-efficiency grading sieve of a compound fine-selection machine according to claim 4, characterized in that: The screening box (2) has a first discharge channel (6) fixed at the first discharge port (24) on its side wall. The first discharge channel (6) has a side opening on the side near the screening box (2).
6. The high-efficiency grading sieve of a compound fine-selection machine according to claim 4, characterized in that: The screening box (2) has a second discharge channel (7) fixed at the second discharge port (25) on its side wall. The second discharge channel (7) has a side opening on the side near the screening box (2).
7. The high-efficiency grading sieve of a compound fine-selection machine according to claim 4, characterized in that: The screening box (2) has a third discharge channel (8) fixed at the third discharge port (26) on its side wall. The third discharge channel (8) has a side opening on the side near the screening box (2).
8. The high-efficiency grading sieve of a compound fine-selection machine according to claim 1, characterized in that: The frame (1) includes a frame body (11) and rollers (12), with the rollers (12) mounted on the bottom of the frame body (11).
9. The high-efficiency grading sieve of a compound fine-selection machine according to claim 8, characterized in that: The frame (1) also includes a fixing plate (13) and a threaded support leg (14). The fixing plate (13) is fixed to the bottom of the frame body (11), and the threaded support leg (14) is vertically arranged and threadedly installed on the fixing plate (13).