Separation and recovery device for mixing fertilizers

Abstract

This invention provides a separation and recycling device for mixed fertilizers, relating to the field of fertilizer production technology. It includes: a mounting frame with a through groove in the middle and a side guide plate fixedly installed on the inner wall of the groove; a drive rotating frame fixedly installed on the top front side of the mounting frame, the top of which is a circular frame structure with six sets of supporting front wheels arranged in a circumferential rotation on both sides; two sets of rear support frames fixedly installed on the top rear side of the mounting frame, with a rear connecting block fixedly installed between the two sets of rear support frames; and a support plate fixedly installed on the top front side of the mounting frame. This invention relies on the centrifugal rotation of the thrower and the separation net, utilizing density differences to allow small particles and water in the wet fertilizer to pass through the mesh and be discharged simultaneously, while large, qualified particles are retained. No drying pretreatment is required, allowing direct connection to the wet fertilizer production process, significantly shortening the overall production cycle. Through multiple rounds of centrifugal stirring and filtration, the filtration accuracy is improved, ensuring that all subsequently output particles are qualified products.

Description

Technical Field

[0001] This invention relates to the field of fertilizer production technology, and in particular to a separation and recycling device for mixed fertilizers. Background Technology

[0002] During the production of granular compound fertilizer, some fragments may be generated due to compression and other issues. This results in smaller fertilizer granules, which affects spreading and makes it easy to lose fertilizer fertility. These are considered substandard products and need to be recycled and collected again. The fragments will then be reprocessed into granules and packaged.

[0003] The current recycling devices mainly use screening to separate the particles, which requires the particles to be completely dry, affecting efficiency. The fragments of wet fertilizer may stick to the large particles due to adhesion and cannot be screened out. There is a lack of separation function for different types of fertilizers. Summary of the Invention

[0004] In view of the above, the present invention addresses the shortcomings of the prior art by providing a separation and recycling device for mixed fertilizers.

[0005] This invention provides a separation and recycling device for mixed fertilizers, specifically comprising: a mounting frame, wherein a through groove is provided in the middle of the mounting frame, and a side guide plate is fixedly installed on the inner wall of the through groove; a drive rotating frame is fixedly installed on the top front side of the mounting frame, the top of the drive rotating frame is a circular frame structure, and six sets of supporting front wheels are arranged in a circumferential manner on both sides of the circular frame structure; two sets of rear support frames are fixedly installed on the top rear side of the mounting frame, and a rear connecting block is fixedly installed between the two sets of rear support frames; a support plate is fixedly installed on the top front side of the mounting frame, and a mounting frame is fixedly installed on the upper rear side of the support plate; five sets of recycling troughs are fixedly installed between the mounting frame and the rear connecting block, and a rearwardly inclined transfer pipe is fixedly installed at the bottom of each recycling trough; The thrower consists of two sets of flange structures with an integrally integrated ring-shaped connecting rod in the middle. A carrying plate is fixedly installed around the middle of the thrower, and a ring-shaped separation net is fixedly installed outside the carrying plate. A front cover is fixedly installed on the front side of the foremost thrower, and the outside of the front cover fits against the front wheel. A feeding channel is fixedly installed in the middle of the mounting frame. A dust removal channel is fixedly connected to the top of the feeding channel. An input device is fixedly connected to the top of the dust removal channel. An input hopper is fixedly connected to the top of the input device.

[0006] Optionally, a support wheel set is fixedly provided on the top of the rear connecting block, and two sets of support tail wheels are rotatably provided on the front side of the support wheel set; a rear end cover is fixedly provided on the rear side of the rear end thrower, and an assembly edge is integrally provided on the rear side of the rear end cover, with the support tail wheels attached to the upper part of the inner side of the assembly edge.

[0007] Optionally, a drive motor is fixedly installed on the upper front side of the drive frame, and a transmission gear is fixedly installed on the rotor end of the drive motor; a drive gear ring is fixedly installed on the outside of the front end cover, and the transmission gear meshes with the drive gear ring.

[0008] Optionally, the bottom of the feeding channel is inclined backward, and the bottom end of the feeding channel is located below the middle of the foremost thrower; the bottom of the front set of transfer tubes is located below the middle of the rear set of throwers; the thrower is located in the middle of the side guide plate.

[0009] Optionally, an output guide bucket is fixedly installed below the rear support frame, and the bottom of the last set of transfer pipes is located above the output guide bucket.

[0010] Optionally, the upper and lower ends of the dust removal channel are both bucket-type structures; a through slot is opened in the middle of the dust removal channel, and three sets of electric fans are fixedly installed at the rear end of the through slot; two sets of partitions are fixedly installed in the middle of the dust removal channel, and the connecting part between the upper and lower ends of the dust removal channel is located between the two sets of partitions.

[0011] Optionally, the input device has a rotating dial in the center, and circular paddles are equidistantly arranged around the outside of the dial; the dial rotates inside the input device; a rotating motor is fixedly installed outside the input device, and the rotating motor is connected to the rotating shaft of the dial.

[0012] Optionally, a dust removal chamber is connected to the front side of the dust removal channel. The top of the dust removal chamber has a triangular structure, and a through groove is opened on the front side of the top of the dust removal chamber. A dust-blocking net is installed in the through groove. The dust-blocking net is made of non-woven fabric, and a small counterweight is fixedly installed in the lower middle of the dust-blocking net. The unfolded area of ​​the dust-blocking net is larger than the through groove area of ​​the dust removal chamber.

[0013] Optionally, a receiving container is installed at the lower front of the dust collection bin, and a pin structure is provided at the front end of the contact position between the dust collection bin and the receiving container for fixed connection.

[0014] The beneficial effects are as follows: This invention relies on the centrifugal rotation of the thrower and the separation mesh, utilizing density differences to allow small particles and water in wet fertilizer to pass through the mesh synchronously and be discharged, while large, qualified particles are retained. No drying pretreatment is required, allowing direct connection to the wet fertilizer production process, significantly shortening the overall production cycle. Multiple rounds of centrifugal agitation and filtration improve filtration accuracy, ensuring that all output particles are qualified products. Furthermore, multiple sets of supporting front wheels on the drive frame are fitted to the front end cover, and the supporting wheel set of the rear connecting block is fitted to the rear end cover, providing stable support for the thrower's rotation. Even when processing batches of wet fertilizer, multiple throwers can operate synchronously and smoothly, avoiding equipment failures caused by uneven load and ensuring the continuity of the wet fertilizer separation process.

[0015] This invention utilizes an electric fan in the dust removal channel to generate directional airflow, which, in conjunction with a screen, intercepts qualified particles and large fragments, allowing only fine particles to pass through. After entering the dust removal chamber, the screen further captures particles and discharges the airflow. When the electric fan is running, the airflow expands the screen to increase the interception area. When the fan stops, a counterweight pulls the screen down quickly and shakes it, dislodging the fine particles adhering to the screen surface. This prevents incomplete recycling due to particle adhesion and improves the recovery rate of dry fertilizer fragments.

[0016] In this invention, the input device's rotary wheel is wrapped with a rubber layer, which, together with the rotary motor, enables controlled-speed conveying of dry fertilizer: this avoids the dry fertilizer particles from colliding and breaking due to excessive conveying speed, and also prevents the speed from being too slow and affecting production efficiency, ensuring that the dry fertilizer particles entering the separation stage maintain their original shape and guaranteeing the integrity of the final qualified particles. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown; Figure 2 A schematic diagram of the axial structure of an embodiment of the present invention is shown; Figure 3 A three-dimensional disassembly diagram of an embodiment of the present invention is shown; Figure 4 A schematic diagram of the assembly structure of the thrower in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the disassembled structure of the thrower in an embodiment of the present invention is shown; Figure 6 An embodiment of the present invention is shown. Figure 5 Another structural diagram from a different angle; Figure 7 A three-dimensional cross-sectional view of the throwing device according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the transmission structure of the front cover in an embodiment of the present invention is shown.

[0018] List of reference numerals in the attached diagram: 1. Mounting frame; 101. Side guide plate; 102. Rear support frame; 103. Rear connecting block; 104. Support wheel set; 105. Support tail wheel; 106. Output guide hopper; 2. Drive frame; 201. Support front wheel; 202. Drive motor; 203. Transmission gear; 3. Support plate; 301. Mounting frame; 302. Feeding channel; 4. Recycling trough; 401. Transfer pipe; 5. Thrower; 501. Carrying plate; 502. Separation net; 6. Front cover; 601. Drive gear ring; 7. Rear cover; 701. Assembly edge; 8. Dust removal channel; 801. Electric fan; 802. Partition net; 9. Input device; 901. Rotating wheel; 902. Rotating motor; 10. Feeding hopper; 11. Dust removal bin; 1101. Dust trap net; 12. Collection container. Detailed Implementation

[0019] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0020] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 8 As shown: This invention proposes a separation and recycling device for mixed fertilizers, comprising: a mounting frame 1, with a through groove in the middle of the mounting frame 1 and a side guide plate 101 fixedly installed on the inner wall of the through groove; a drive rotating frame 2 fixedly installed on the top front side of the mounting frame 1, the top of the drive rotating frame 2 being a circular frame structure, with six sets of supporting front wheels 201 arranged in a circumferential manner on both sides of the circular frame structure; two sets of rear support frames 102 fixedly installed on the top rear side of the mounting frame 1, with a rear connecting block 103 fixedly installed between the two sets of rear support frames 102; a support plate 3 fixedly installed on the top front side of the mounting frame 1, with a mounting frame 301 fixedly installed on the upper rear side of the support plate 3; and five sets of recycling troughs 4 fixedly installed between the mounting frame 301 and the rear connecting block 103, with a rearwardly inclined transfer pipe 401 fixedly installed at the bottom of each recycling trough 4. The thrower 5 consists of two sets of flange structures with an integrally integrated ring-shaped connecting rod in the middle. A carrying plate 501 is fixedly installed around the middle of the thrower 5, and an annular separation net 502 is fixedly installed outside the carrying plate 501. A front cover 6 is fixedly installed on the front side of the foremost thrower 5, and the front wheel 201 is attached to the outside of the front cover 6. A feeding channel 302 is fixedly installed in the middle of the mounting frame 301. A dust removal channel 8 is fixedly connected to the top of the feeding channel 302. An input device 9 is fixedly connected to the top of the dust removal channel 8. An input hopper 10 is fixedly connected to the top of the input device 9.

[0021] Among them, a support wheel set 104 is fixedly installed on the top of the rear connecting block 103, and two sets of support tail wheels 105 are rotatably installed on the front side of the support wheel set 104; a rear end cover 7 is fixedly installed on the rear side of the rear end thrower 5, and an assembly edge 701 is integrally installed on the rear side of the rear end cover 7. The upper part of the assembly edge 701 is attached to the support tail wheel 105 to provide auxiliary bearing effect and ensure the stable rotation of the thrower 5.

[0022] Among them, a drive motor 202 is fixedly installed on the upper front side of the drive frame 2, and a transmission gear 203 is fixedly installed on the rotor end of the drive motor 202; a drive gear ring 601 is fixedly installed on the outside of the front cover 6, and the transmission gear 203 meshes with the drive gear ring 601.

[0023] Among them, the bottom of the feeding channel 302 is inclined backward, and the bottom end of the feeding channel 302 is located in the middle and lower part of the foremost thrower 5; the bottom of the front set of transfer pipes 401 is located in the middle and lower part of the rear set of throwers 5; the thrower 5 is located in the middle of the side guide plate 101; the lower part of the inside of the recycling tank 4 is a bucket-shaped structure.

[0024] The output guide bucket 106 is fixedly installed below the rear support frame 102, and the bottom of the last set of transmission pipes 401 is located above the output guide bucket 106.

[0025] The dust removal channel 8 has a bucket-type structure at both the top and bottom. A through slot is provided in the middle of the dust removal channel 8, and three sets of electric fans 801 are fixedly installed at the rear end of the slot. Two sets of partition nets 802 are fixedly installed in the middle of the dust removal channel 8, and the connecting part between the top and bottom of the dust removal channel 8 is located between the two sets of partition nets 802.

[0026] The input device 9 has a rotating wheel 901 in the center, and circular paddles are equidistantly arranged around the outside of the rotating wheel 901. The paddles adopt a combination structure with a fixed bone plate inside and a rubber layer on the outside to avoid crushing fertilizer particles during transportation. The rotating wheel 901 rotates inside the input device 9. A rotating motor 902 is fixedly installed outside the input device 9, and the rotating motor 902 is connected to the rotating shaft of the rotating wheel 901.

[0027] The dust removal channel 8 is connected to a dust removal chamber 11. The top of the dust removal chamber 11 is a triangular structure. A through groove is opened on the front side of the top of the dust removal chamber 11, and a dust-blocking net 1101 is installed in the through groove. The dust-blocking net 1101 is made of non-woven fabric, and a small counterweight is fixedly installed in the lower middle of the dust-blocking net 1101. The unfolded area of ​​the dust-blocking net 1101 is larger than the area of ​​the through groove of the dust removal chamber 11.

[0028] The dust collection chamber 11 is connected to the lower front of the receiving container 12, and the dust collection chamber 11 and the receiving container 12 are fixedly connected by a pin structure at the contact position.

[0029] Input device 9 provides fertilizer conveying and speed control functions and serves as the common conveying starting point in both wet and dry fertilizer processing procedures.

[0030] Driven by the rotary motor 902, the rotary wheel 901 rotates to convey the fertilizer downwards, while simultaneously achieving precise control of the fertilizer conveying speed to ensure the stable progress of subsequent separation steps. Rotary motor 902: provides power for the rotation of rotary wheel 901, and indirectly realizes fertilizer conveying and speed control by driving rotary wheel 901. Whether it is wet fertilizer or dry fertilizer, it is put into the equipment from the input hopper 10 to start the separation process. Dust removal channel 8 is a transition channel for wet fertilizer, receiving wet fertilizer delivered at controlled speed from input device 9, allowing the fertilizer to fall smoothly through the channel and directly into feeding channel 302. The feed channel 302 is a guide channel for wet fertilizer. It receives wet fertilizer falling from the dust removal channel 8, guides the fertilizer to slide out of the channel and fall into the foremost thrower 5, in preparation for subsequent separation. The drive motor 202 provides power to the entire throwing system and drives the transmission gear 203 to rotate after starting. The transmission gear 203 drives the drive gear ring 601 to rotate, thereby linking the front cover 6, the rear cover 7 and each set of throwers 5. The drive gear ring 601 cooperates with the transmission gear 203 to transmit the power of the transmission gear 203 to the front cover 6, thereby realizing the overall rotation of the throwing system. The front cover 6 rotates under the drive of the drive gear ring 601, which in turn drives each set of throwers 5 and the rear cover 7 to rotate synchronously, ensuring that multiple sets of throwers 5 work together. The rear cover 7 rotates synchronously with the front cover 6 and the thrower 5 to help maintain the stable operation of the throwing system. The thrower 5 separates and screens wet fertilizer particles, and improves the fault tolerance effect through multiple sets of cooperation, eliminating most small particles and moisture. During the rotation of the thrower 5, the carrying plate 501 drives the particles to move, generating a centrifugal effect that causes the particles to tumble. When the number of particles in the thrower 5 increases to the point where it cannot be pushed forward, the particles above are thrown into the recycling tank 4. During the stirring process, small particles and water near the separation net 502 pass through the mesh and are discharged, while large particles remain in the thrower 5, thus completing the separation. The core functions of the recycling tank 4 and the transfer pipe 401 are: to realize the transfer of fertilizer between multiple sets of throwers 5 to ensure the continuity of the separation process; and to receive particles (including some small particles that have not been discharged) falling from the foremost thrower 5 in a throwing manner.

[0031] Transfer pipe 401: guides the particles in the recycling tank 4 to slide backward and enter the next set of throwers 5; qualified large particles discharged from the last set of throwers 5 fall into the output guide bucket 106 from below the last transfer pipe 401. The core function of the output guide bucket 106 is to be a discharge guide device for qualified large particles, receiving the particles sent by the last set of throwers 5 and guiding them out, so as to facilitate the collection of qualified fertilizer by setting up a collection container at the rear. The core function of the side guide plate 101 is to collect and guide small particles and water. It receives small particles and water discharged from the separation net 502 of the thrower 5 and guides them to fall inside the side guide plate 101. A collection container can be set at the bottom in advance to collect them. Example 2: Dedicated components and functions for dry fertilizer separation Dust collection channel 8 is a component specifically for dry fertilizer, and its function is as follows: When the electric fan 801 is started, it generates a forward-pushing airflow, which is used to blow out the very fine particles in the dry fertilizer that cannot be discharged with water, thus achieving the initial separation of fine particles from qualified fertilizer. The mesh 802 provides an interception effect, preventing qualified fertilizer and large debris from passing through, allowing only fine fertilizer particles to pass through, ensuring that the subsequent dust collection chamber 11 only collects fine particles. The dust collection chamber 11 provides space for collecting and intercepting fine particles, and works with the dust filter 1101 to separate the airflow from the fine particles.

[0032] The dust trap 1101 can intercept fine fertilizer particles that enter the dust collection chamber 11 with the airflow. The airflow can pass through the dust trap 1101 and be discharged outward. Its unfolded area is larger than the through-slot area of ​​the dust collection chamber 11. A small counterweight is fixed in the lower middle. It can unfold to increase the interception area when air passes through. When the electric fan 801 stops, the counterweight pulls the dust trap 1101 to fall and shake, shaking off the attached micro particles. The receiving container 12 is a recycling vessel for fine particles. It collects fine particles that fall off the dust screen 1101 or fall off after accumulating too much. The particles can be recycled by removing the receiving container 12, which facilitates subsequent re-fusion and granulation for reuse. The separated fragments (small particles from wet fertilizer separation) or microparticles (fine particles from dry fertilizer separation) can be re-blended and granulated again, enabling the reuse of fertilizer and improving resource utilization.

[0033] Example 3: Based on Example 1, the number of throwers 5 is not limited to five sets. The separation effect can be increased by increasing the number of throwers 5.

[0034] The specific usage and function of this embodiment: In this invention, the input device 9 provides the functions of conveying and controlling the speed; Depending on the process, fertilizers are generally made into wet fertilizers (through crystallization and other steps) or dry fertilizers (through extrusion granulation and drying). When using, add fertilizer from point 10 of the feeding hopper: When separating wet fertilizer, the fertilizer falls into the input device 9. The rotary motor 902 is started to drive the rotary wheel 901 to rotate. During the rotation of the rotary wheel 901, the fertilizer is conveyed downward and conveyed to the dust removal channel 8 at a controlled speed. The fertilizer falls and passes through the dust removal channel 8, and falls directly into the feeding channel 302. It slides out from the feeding channel 302 and falls into the foremost thrower 5. Start the drive motor 202 to drive the transmission gear 203 to rotate, and use the transmission gear 203 to drive the drive gear ring 601 to rotate. At the same time, the front cover 6 drives each set of throwers 5 and the rear cover 7 to rotate, so that each set of throwers 5 rotates synchronously and continuously stirs the fertilizer. During the rotation of the thrower 5, the carrying plate 501 will drive the particles to move, generating a centrifugal effect and causing the particles to tumble. As the particles continuously tumble, small particles and moisture approach the separation net 502 and gradually pass through the mesh of the separation net 502 and are discharged, while large particles remain in the thrower 5. As the number of particles in the foremost thrower 5 increases, some small particles may remain. When the number of particles continues to increase and the carrying plate 501 can no longer be pushed forward, the particles above will fall into the recycling tank 4 by throwing, slide backward through the transfer pipe 401, and then into the next set of throwers 5. Through the separation of the five sets of throwers 5, the fault tolerance effect is improved, and most of the small particles and moisture are removed. The particles discharged from the last thrower 5 fall into the output guide hopper 106 from below the last transfer pipe 401 and are discharged. A collection container is set behind the output guide hopper 106 to collect them. Small particles and water discharged from the separation net 502 will fall inside the side guide plate 101, and can be collected by setting a collection container at the bottom of the side guide plate 101 in advance. When adding dry fertilizer, the input speed is also controlled by rotating wheel 901; Start the electric fan 801. The electric fan 801 generates a forward airflow. Since the very fine particles in the dry fertilizer cannot be mixed with the fine particles in the wet fertilizer and discharged in the water, the airflow can blow the fine particles forward. The screen 802 provides an interception effect, preventing qualified fertilizer and large debris from passing through it and causing them to fall. Fine fertilizer particles can pass through the screen 802 and enter the dust collection chamber 11. After entering the dust collection chamber 11 with the airflow, the airflow passes through the dust barrier 1101 and is discharged outwards. The debris is intercepted below the dust barrier 1101, and after accumulating too much, it falls into the collection container 12. The unfolded area of ​​the dust barrier 1101 is larger than the through-slot area of ​​the dust collection chamber 11, and a small counterweight is fixedly installed in the lower middle of the dust barrier 1101, which creates a pulling effect. When air passes through the dust barrier 1101, it unfolds, increasing the interception area. When the electric fan 801 stops, the small counterweight pulls the dust barrier 1101 to fall quickly and shake it, dislodging the micro-particles attached to the bottom of the dust barrier 1101. The microparticles can be recovered by removing the collection container 12. The separated fragments or microparticles can be re-fused and granulated for reuse.

Claims

1. A separation and recovery device for mixed fertilizers, comprising: Mounting frame (1), wherein a through groove is provided in the middle of the mounting frame (1), and a side guide plate (101) is fixedly provided on the inner wall of the through groove; characterized in that a drive rotating frame (2) is fixedly provided on the top front side of the mounting frame (1), the top of the drive rotating frame (2) is a circular frame structure, and six sets of supporting front wheels (201) are arranged in a circumferential rotation on both sides of the circular frame structure; two sets of rear support frames (102) are fixedly provided on the top rear side of the mounting frame (1), and a rear connecting block (103) is fixedly provided between the two sets of rear support frames (102); a support plate (3) is fixedly provided on the top front side of the mounting frame (1), and a mounting frame (301) is fixedly provided on the upper rear side of the support plate (3); five sets of recycling troughs (4) are fixedly provided between the mounting frame (301) and the rear connecting block (103), and a rearward inclined transfer pipe (401) is fixedly provided at the bottom of each recycling trough (4); The thrower (5) is composed of two sets of flange structures with an integrally arranged ring-shaped connecting rod in the middle. A carrying plate (501) is fixedly arranged in the middle of the thrower (5), and an annular separation net (502) is fixedly arranged outside the carrying plate (501). A front cover (6) is fixedly arranged on the front side of the foremost thrower (5), and the front wheel (201) is attached to the outside of the front cover (6). A feeding channel (302) is fixedly arranged in the middle of the mounting frame (301), and a dust removal channel (8) is fixedly connected to the top of the feeding channel (302). An input device (9) is fixedly connected to the top of the dust removal channel (8), and an input hopper (10) is fixedly connected to the top of the input device (9).

2. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, The top of the rear connecting block (103) is fixedly provided with a support wheel set (104), and two sets of support tail wheels (105) are rotatably provided on the front side of the support wheel set (104); the rear end of the last thrower (5) is fixedly provided with a rear end cover (7), and an assembly edge (701) is integrally provided on the rear side of the rear end cover (7), and the support tail wheel (105) is attached to the upper part of the inner side of the assembly edge (701).

3. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, A drive motor (202) is fixedly installed on the upper front side of the drive frame (2), and a transmission gear (203) is fixedly installed on the rotor end of the drive motor (202); a drive gear ring (601) is fixedly installed on the outside of the front cover (6), and the transmission gear (203) meshes with the drive gear ring (601).

4. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, The bottom of the feeding channel (302) is tilted backward, and the bottom end of the feeding channel (302) is located in the middle and lower part of the foremost thrower (5); the bottom of the front set of transfer pipes (401) is located in the middle and lower part of the rear set of throwers (5); the thrower (5) is located in the middle of the side guide plate (101).

5. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, An output guide bucket (106) is fixedly installed below the rear support frame (102), and the bottom of the last set of transmission pipes (401) is located above the output guide bucket (106).

6. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, The upper and lower ends of the dust removal channel (8) are both bucket-shaped structures; a through slot is opened in the middle of the dust removal channel (8) and three sets of electric fans (801) are fixedly installed at the rear end of the through slot; two sets of partitions (802) are fixedly installed in the middle of the dust removal channel (8) and the connecting part of the upper and lower ends of the dust removal channel (8) is located between the two sets of partitions (802).

7. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, The input device (9) has a rotating dial (901) in the middle, and circular paddles are arranged equidistantly around the outside of the dial (901); the dial (901) rotates inside the input device (9); a rotating motor (902) is fixedly installed outside the input device (9), and the rotating motor (902) is connected to the rotating shaft of the dial (901) via a transmission.

8. The separation and recovery device for mixed fertilizers as described in claim 1, characterized in that, A dust removal chamber (11) is connected to the front side of the dust removal channel (8). The top of the dust removal chamber (11) is a triangular structure. A through groove is opened on the front side of the top of the dust removal chamber (11). A dust-blocking net (1101) is installed in the through groove. The dust-blocking net (1101) is made of non-woven fabric. A small counterweight is fixedly installed in the lower middle of the dust-blocking net (1101). The unfolded area of ​​the dust-blocking net (1101) is larger than the through groove area of ​​the dust removal chamber (11).

9. The separation and recovery device for mixed fertilizers as described in claim 8, characterized in that, The dust removal chamber (11) is connected to the lower front of the receiving container (12), and a pin structure is provided at the front end of the contact position between the dust removal chamber (11) and the receiving container (12) for fixed connection.

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