Multi-stage fertilizer screening device

Abstract

The utility model relates to the technical field of fertilizer screening, and discloses a multi-stage fertilizer screening device. Comprising a box, the upper side of the box is fixedly connected with a feed port, the lower end of the box is fixedly connected with a discharge port, and a plurality of sieve plates are arranged on the inner wall of the box. When the device sorts the fertilizer, the telescopic end of an electric telescopic rod extends to drive a lifting plate to push a hinged plate to move upwards, the electric telescopic rod retracts to enable the hinged plate to freely descend, at the moment, a shaking spring resets to drive one end of a sieve plate to shake, and the fertilizer shakes on the sieve plate; and the discharging motor is started to drive the discharging crawler belt to rotate, the fertilizer on the sieve plates is conveyed to the discharging plate, and the fertilizer is discharged from the discharging plate corresponding to the sieve plates, so that the device can sort the fertilizer more carefully, and the sorting efficiency is improved. And the fertilizers with different sizes can be correspondingly collected, so that the sorting efficiency of the fertilizers is improved.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer screening technology, specifically to a multi-stage fertilizer screening device. Background Technology

[0002] Organic fertilizer, also known as farmyard manure, is a fertilizer made from organic matter. It is characterized by its variety, wide range of sources, and long-lasting effect. The nutrients contained in organic fertilizer are mostly in an organic state, which is difficult for crops to use directly. Through the action of microorganisms, a variety of nutrients are slowly released, continuously supplying nutrients to crops. During the production process, organic fertilizers are prone to large size differences due to the varying sizes of the organic matter itself, so it is necessary to screen organic fertilizers.

[0003] An organic fertilizer screening device is mentioned in an existing Chinese patent (authorization announcement number: CN213670443U). It includes a housing with a feed pipe on its upper side. Two placement plates are fixedly connected to the inner side of the housing, and a filter box is located on the upper side of each placement plate. A collection box is slidably connected to the inner bottom of the housing. Two openings are provided on the outer side of the housing, and the filter box and collection box are located inside these openings respectively. Handles are fixedly connected to the outward-facing side walls of both the filter box and collection box. A screening mechanism for screening organic fertilizer is provided inside the housing. This utility model has a reasonable structural design, utilizing two cams to enhance the screening effect. Furthermore, the filter box and collection box can be directly pulled out via the handles, eliminating the need for personnel to operate inside the housing, thus facilitating the removal of the screened organic fertilizer and greatly improving production efficiency.

[0004] Existing organic fertilizer screening devices sort fertilizers into two groups of sizes, larger and smaller, after a single screening. However, during the production process, organic fertilizers are prone to significant size differences due to variations in the size of the organic matter itself. Organic fertilizers of various sizes need to be classified according to their size, and existing devices require multiple screenings to achieve a more detailed classification, making the fertilizer screening process complicated and inconvenient. Utility Model Content

[0005] The purpose of this application is to solve the problem that existing devices require multiple screenings to classify fertilizers more finely, resulting in a complicated and inconvenient fertilizer screening process. This application provides a multi-stage fertilizer screening device.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A fertilizer multi-stage screening device includes a box body, an inlet fixedly connected to the upper side of the box body, an outlet fixedly connected to the lower end of the box body, a plurality of sieve plates arranged on the inner wall of the box body, and a screening structure arranged between the sieve plates and the box body.

[0008] By adopting the above technical solution, when using this device to screen organic fertilizer, the fertilizer is first fed into the inlet, allowing it to fall onto the screen plate. The screening structure then drives multiple sets of screen plates of different sizes to sort the fertilizer, placing fertilizer of different sizes onto the corresponding screen plates. The screening structure then collects and discharges the fertilizer from the different screen plates separately. This makes the device more precise in sorting fertilizer and allows for the corresponding collection of fertilizer of different sizes, thus improving the sorting efficiency of fertilizer.

[0009] Furthermore, the screening structure includes a discharge trough opened on the outer wall of the box, the end of the screen plate is rotatably connected to the discharge trough, the end of the screen plate is fixedly connected to a discharge motor, the output end of the discharge motor is sleeved with a discharge track, the discharge track is rotatably connected to the screen plate, and a discharge plate is fixedly connected to the outside of the discharge trough.

[0010] By adopting the above technical solution, the discharge motor is started to drive the discharge conveyor belt to rotate, transporting the fertilizer on the screen plate to the discharge plate, so that it is discharged from the discharge plate corresponding to the screen plate. This can collect fertilizers of different sizes accordingly, thus improving the fertilizer sorting efficiency.

[0011] Furthermore, a hinge plate is hinged to the end of the sieve plate, and an electric telescopic rod is fixedly connected inside the box. A lifting plate is fixedly connected to the telescopic end of the electric telescopic rod, and the shape of the lifting plate is adapted to the hinge plate.

[0012] By adopting the above technical solution, the extension of the telescopic end of the electric telescopic rod drives the lifting plate to push the hinge plate upward. The retraction of the electric telescopic rod causes the hinge plate to descend freely, causing the screen plate to vibrate and screen the fertilizer on it.

[0013] Furthermore, a sliding column is fixedly connected to the lower end of the hinge plate, the sliding column is slidably connected to the inside of the housing, and a shaking spring is sleeved on the outside of the sliding column. The two ends of the shaking spring are fixedly connected to the hinge plate and the housing, respectively.

[0014] By adopting the above technical solution, the shaking spring resets and drives one end of the screen plate to shake, making the fertilizer shake more violently on the screen plate and improving the screening effect of the device.

[0015] Furthermore, a fixing plate is fixedly connected to the inner wall of the box, a fixing column is slidably connected inside the fixing plate, and a baffle is fixedly connected to the lower end of the fixing column.

[0016] By adopting the above technical solution, the discharge chute is blocked by a baffle attached to the upper part of the screen plate, making the screening process more enclosed and reducing the leakage of fertilizer.

[0017] Furthermore, a limiting spring is sleeved on the outside of the fixed column, and the two ends of the limiting spring are fixedly connected to the fixed plate and the baffle, respectively.

[0018] By adopting the above technical solution, the limit spring resets and pushes the baffle downward, which makes the baffle always fit against the upper part of the screen plate, further improving its sealing effect.

[0019] Furthermore, a lifting plate is fixedly connected to the end of the baffle through the box body, a lifting motor is fixedly connected to the outer wall of the box body, a threaded rod is fixedly connected to the output end of the lifting motor, the threaded rod is rotatably connected to the box body, and the outer side of the threaded rod is threadedly connected to the lifting plate.

[0020] By adopting the above technical solution, when material needs to be discharged, the lifting motor drives the threaded rod to rotate, causing the lifting block on the threaded rod to rise and drive the baffle to lift, thereby exposing the discharge chute for fertilizer to be discharged.

[0021] Furthermore, a feeding motor is fixedly connected to the upper side of the feeding port, and an auger is fixedly connected to the output end of the feeding motor through the feeding port. A dispersing rod is fixedly connected to the upper end of the auger.

[0022] By adopting the above technical solution, when fertilizer is put into the feed inlet, the feed motor is started to drive the auger and the dispersing rod to rotate. The fertilizer is first dispersed by the dispersing rod, so that the fertilizer that may clump is broken up. Then, the dispersed fertilizer is transported by the auger so that it can fall evenly onto the screen plate, thereby reducing the problem of fertilizer clumping and difficulty in screening.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. In this application, when the device sorts fertilizer, the extension of the telescopic end of the electric telescopic rod drives the lifting plate to push the hinge plate upward, causing one end of the screen plate to rise with the hinge plate and stretch the shaking spring, allowing the screen plate to rotate along the discharge chute. When the electric telescopic rod retracts, the hinge plate descends freely. At this time, the shaking spring returns to its original position, causing one end of the screen plate to shake, making the fertilizer shake on the screen plate. This allows fertilizers of the correct size to be screened and left on that screen plate, while smaller fertilizers are shaken to the lower screen plate. The above steps are then repeated to shake the screen plate, and the discharge motor is started to drive the discharge conveyor belt to rotate, transporting the fertilizer on the screen plate to the discharge plate, so that it is discharged from the discharge plate corresponding to the screen plate. This allows the device to sort fertilizers more finely and to collect fertilizers of different sizes accordingly, improving the fertilizer sorting efficiency.

[0025] 2. In this application, when the screen plate vibrates, one end rotates along the discharge chute. As the screen plate rotates upward, the baffle end is pushed upward, which in turn moves the fixed column upward, causing the limit spring to contract. When the screen plate rotates downward, the limit spring resets and pushes the baffle downward. This ensures that the baffle always adheres to the upper end of the screen plate to block the discharge chute, making the screening process more enclosed and reducing fertilizer leakage. When discharge is required, the lifting motor drives the threaded rod to rotate, causing the lifting block on the threaded rod to rise and lift the baffle, thus opening the discharge chute for fertilizer discharge. This makes the device more enclosed during the screening process and reduces waste caused by fertilizer leakage. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a fertilizer multi-stage screening device according to this application;

[0027] Figure 2 This is an internal structural diagram of a fertilizer multi-stage screening device according to this application;

[0028] Figure 3 This is a partial cross-sectional view of a fertilizer multi-stage screening device according to this application;

[0029] Figure 4 It is in this application Figure 2 Enlarged view of point A in the middle;

[0030] Figure 5 It is in this application Figure 3 Enlarged diagram of point B in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Housing; 2. Discharge port; 3. Inlet; 4. Feed motor; 5. Screw; 6. Dispersing rod; 7. Screen plate; 8. Discharge plate; 9. Discharge track; 10. Discharge motor; 11. Threaded rod; 12. Lifting plate; 13. Lifting motor; 14. Baffle; 15. Hinge plate; 16. Electric telescopic rod; 17. Lifting plate; 18. Sliding column; 19. Vibration spring; 20. Fixed column; 21. Limit spring; 22. Fixed plate. Detailed Implementation

[0033] The following will refer to the embodiments of this utility model. Figures 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Reference Figure 1 and Figure 2 This utility model provides a technical solution: a multi-stage fertilizer screening device, including a box 1, an inlet 3 fixedly connected to the upper side of the box 1, an outlet 2 fixedly connected to the lower end of the box 1, and a plurality of sieve plates 7 arranged on the inner wall of the box 1, with a screening structure arranged between the sieve plates 7 and the box 1.

[0035] When using this device to screen organic fertilizer, the fertilizer is first fed into the inlet 3, allowing it to fall onto the screen plate 7. The screening structure then drives multiple sets of screen plates 7 with different screening sizes to sort the fertilizer, placing fertilizer of different sizes onto the corresponding screen plates 7. The screening structure then collects and discharges the fertilizer from different screen plates 7 separately. This makes the device more precise in sorting fertilizer and allows for the collection of fertilizer of different sizes, thus improving the sorting efficiency of fertilizer.

[0036] Reference Figure 2 and Figure 4 The screening structure includes a discharge trough on the outer wall of the housing 1. A screen plate 7 is rotatably connected to the discharge trough at its end. A discharge motor 10 is fixedly connected to the end of the screen plate 7. A discharge track 9 is fitted around the output end of the discharge motor 10 and is rotatably connected to the screen plate 7. A discharge plate 8 is fixedly connected to the outer side of the discharge trough. A hinge plate 15 is hinged to the end of the screen plate 7. An electric telescopic rod 16 is fixedly connected inside the housing 1. A lifting plate 17 is fixedly connected to the telescopic end of the electric telescopic rod 16, and the shape of the lifting plate 17 is adapted to the hinge plate 15. A sliding column 18 is fixedly connected to the lower end of the hinge plate 15. The sliding column 18 is slidably connected to the inside of the housing 1. A shaking spring 19 is fitted around the outside of the sliding column 18, and both ends of the shaking spring 19 are fixedly connected to the hinge plate 15 and the housing 1, respectively.

[0037] When the device sorts fertilizer, the extension of the telescopic end of the electric telescopic rod 16 drives the lifting plate 17 to push the hinge plate 15 upward, causing one end of the screen plate 7 to rise with the hinge plate 15 and stretch the shaking spring 19, allowing the screen plate 7 to rotate along the discharge chute. When the electric telescopic rod 16 retracts, the hinge plate 15 falls freely. At this time, the shaking spring 19 returns to its original position, causing one end of the screen plate 7 to shake, making the fertilizer shake on the screen plate 7. Fertilizer that meets the size requirements is left on the screen plate 7, while smaller fertilizer is shaken to the lower screen plate 7. The above steps are repeated to shake the screen plate 7, and the discharge motor 10 is started to drive the discharge conveyor 9 to rotate, transporting the fertilizer on the screen plate 7 to the discharge plate 8, so that it is discharged from the discharge plate 8 corresponding to the screen plate 7. This allows the device to sort fertilizer more finely and collect fertilizer of different sizes accordingly, improving the fertilizer sorting efficiency.

[0038] Reference Figure 3 and Figure 5A fixing plate 22 is fixedly connected to the inner wall of the housing 1. A fixing column 20 is slidably connected inside the fixing plate 22. A baffle 14 is fixedly connected to the lower end of the fixing column 20. A limiting spring 21 is sleeved on the outer side of the fixing column 20. The two ends of the limiting spring 21 are fixedly connected to the fixing plate 22 and the baffle 14, respectively. A lifting plate 12 is fixedly connected to the end of the baffle 14 through the housing 1. A lifting motor 13 is fixedly connected to the outer wall of the housing 1. A threaded rod 11 is fixedly connected to the output end of the lifting motor 13. The threaded rod 11 is rotatably connected to the housing 1, and the outer side of the threaded rod 11 is threadedly connected to the lifting plate 12.

[0039] When the screen plate 7 vibrates, one end rotates along the discharge chute. As the screen plate 7 rotates upward, the baffle 14 is pushed upward, which in turn moves the fixed column 20 upward, causing the limiting spring 21 to contract. When the screen plate 7 rotates downward, the limiting spring 21 resets and pushes the baffle 14 downward. This ensures that the baffle 14 always fits against the upper end of the screen plate 7 to block the discharge chute, making the screening process more enclosed and reducing fertilizer leakage. When discharge is needed, the lifting motor 13 drives the threaded rod 11 to rotate, causing the lifting block on the threaded rod 11 to rise and lift the baffle 14, thus exposing the discharge chute for fertilizer discharge. This makes the device more enclosed during the screening process, reducing waste caused by fertilizer leakage.

[0040] Reference Figure 3 A feeding motor 4 is fixedly connected to the upper side of the feeding port 3. The output end of the feeding motor 4 passes through the feeding port 3 and is fixedly connected to an auger 5. A dispersing rod 6 is fixedly connected to the upper end of the auger 5.

[0041] When fertilizer is put into the feed inlet 3, the feed motor 4 is started to drive the auger 5 and the dispersing rod 6 to rotate. The fertilizer is first dispersed by the dispersing rod 6, so that the fertilizer that may clump is broken up. Then, the dispersed fertilizer is transported by the auger 5 so that it can fall evenly onto the screen plate 7, thereby reducing the problem of fertilizer clumping and difficulty in screening.

[0042] Working principle: When fertilizer is put into the feed inlet 3, the feed motor 4 is started to drive the auger 5 and the dispersing rod 6 to rotate. The fertilizer is first dispersed by the dispersing rod 6, so that the fertilizer that may clump is broken up. Then, through the transport of the auger 5, the dispersed fertilizer can fall evenly onto the screen plate 7, thereby reducing the problem of fertilizer clumping and difficulty in screening.

[0043] When the device sorts fertilizer, the extension of the telescopic end of the electric telescopic rod 16 drives the lifting plate 17 to push the hinge plate 15 upward, so that one end of the screen plate 7 rises with the hinge plate 15 and stretches the shaking spring 19, causing the screen plate 7 to rotate along the discharge chute. When the electric telescopic rod 16 retracts, the hinge plate 15 falls freely. At this time, the shaking spring 19 returns to its original position and drives one end of the screen plate 7 to shake, so that the fertilizer shakes on the screen plate 7. Fertilizer that meets the size is selected and left on the screen plate 7, while smaller fertilizer is shaken to the lower screen plate 7. Then the above steps are repeated to shake the screen plate 7, and the discharge motor 10 is started to drive the discharge conveyor 9 to rotate, transporting the fertilizer on the screen plate 7 to the discharge plate 8, so that it is discharged from the discharge plate 8 corresponding to the screen plate 7. This allows the device to sort fertilizer more finely and to collect fertilizer of different sizes accordingly, improving the fertilizer sorting efficiency.

[0044] When the screen plate 7 vibrates, one end rotates along the discharge chute. As the screen plate 7 rotates upward, the baffle 14 is pushed upward, which in turn moves the fixed column 20 upward, causing the limit spring 21 to contract. When the screen plate 7 rotates downward, the limit spring 21 resets and pushes the baffle 14 downward. This ensures that the baffle 14 always fits against the upper end of the screen plate 7 to block the discharge chute, making the screening process more enclosed and reducing fertilizer leakage. When discharge is needed, the lifting motor 13 drives the threaded rod 11 to rotate, causing the lifting block 12 on the threaded rod 11 to rise and lift the baffle 14, thus opening the discharge chute for fertilizer discharge. This makes the device more enclosed during the screening process and reduces waste caused by fertilizer leakage.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage fertilizer screening device, comprising a housing (1), characterized in that: The upper side of the box (1) is fixedly connected to the inlet (3), and the lower end of the box (1) is fixedly connected to the outlet (2). The inner wall of the box (1) is provided with several sieve plates (7), and a screening structure is provided between the sieve plates (7) and the box (1).

2. The fertilizer multi-stage screening device according to claim 1, characterized in that: The screening structure includes a discharge trough opened on the outer wall of the box (1), the end of the screen plate (7) is rotatably connected to the discharge trough, the end of the screen plate (7) is fixedly connected to the discharge motor (10), the output end of the discharge motor (10) is sleeved with a discharge track (9), the discharge track (9) is rotatably connected to the screen plate (7), and the outer side of the discharge trough is fixedly connected to the discharge plate (8).

3. The fertilizer multi-stage screening device according to claim 2, characterized in that: The end of the sieve plate (7) is hinged with a hinge plate (15), and an electric telescopic rod (16) is fixedly connected inside the box (1). The telescopic end of the electric telescopic rod (16) is fixedly connected with a lifting plate (17), and the shape of the lifting plate (17) is adapted to the hinge plate (15).

4. The fertilizer multi-stage screening device according to claim 3, characterized in that: The lower end of the hinge plate (15) is fixedly connected to a sliding column (18), which is slidably connected to the inside of the box (1). A shaking spring (19) is sleeved on the outside of the sliding column (18), and the two ends of the shaking spring (19) are fixedly connected to the hinge plate (15) and the box (1) respectively.

5. The fertilizer multi-stage screening device according to claim 2, characterized in that: A fixing plate (22) is fixedly connected to the inner wall of the box (1), and a fixing column (20) is slidably connected inside the fixing plate (22). A baffle (14) is fixedly connected to the lower end of the fixing column (20).

6. The fertilizer multi-stage screening device according to claim 5, characterized in that: A limiting spring (21) is sleeved on the outside of the fixed column (20), and the two ends of the limiting spring (21) are fixedly connected to the fixed plate (22) and the baffle (14) respectively.

7. The fertilizer multi-stage screening device according to claim 5, characterized in that: The end of the baffle (14) is fixedly connected to the lifting plate (12) through the box (1). The outer wall of the box (1) is fixedly connected to the lifting motor (13). The output end of the lifting motor (13) is fixedly connected to the threaded rod (11). The threaded rod (11) is rotatably connected to the box (1). The outer side of the threaded rod (11) is threadedly connected to the lifting plate (12).

8. The fertilizer multi-stage screening device according to claim 1, characterized in that: A feeding motor (4) is fixedly connected to the upper side of the feed inlet (3). The output end of the feeding motor (4) passes through the feed inlet (3) and is fixedly connected to an auger (5). A dispersing rod (6) is fixedly connected to the upper end of the auger (5).

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