Novel compound fertilizer screening equipment

Abstract

The utility model relates to the field of compound fertilizer screening equipment, and discloses novel compound fertilizer screening equipment which comprises two frames, a plurality of bearing rollers are arranged on the inner walls of the sides, close to each other, of the frames, a first servo motor is fixedly connected to the rear end of the outer wall of one side of the frame, and material conveying boxes are arranged at the front ends of the frames. The upper surface of the material conveying box is fixedly connected with a material conveying motor, and the output end of the material conveying motor penetrates into the material conveying box and is fixedly connected with a material conveying auger. According to the compound fertilizer screening device, compound fertilizer enters the second screening barrels on the two sides through natural gravity, and therefore separated materials of different sizes can be screened through the multiple second screening barrels and the first screening barrel; and the second screening barrel is arranged in the first screening barrel, so that the better screening efficiency can be achieved, meanwhile, the occupied space of the equipment is reduced, meanwhile, the number of elevators can be effectively reduced, and the purchasing cost of enterprises for the screening equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of compound fertilizer screening equipment, in particular to a new type of compound fertilizer screening equipment. Background Technique

[0002] Compound fertilizer is a kind of chemical fertilizer composed of multiple nutrient elements, usually containing multiple main plant nutrient elements. During the production process of compound fertilizer, it is necessary to screen the compound fertilizer so as to classify compound fertilizers of different sizes, so that compound fertilizers of different particle sizes are suitable for different crops, which is conducive to plant absorption and utilization, improves fertilization efficiency and nutrient utilization rate, and at the same time can effectively improve the enterprise's quality control. Therefore, a compound fertilizer screening equipment is needed.

[0003] Most traditional compound fertilizer screening devices are followed by a drum screen after a hoist, and then the compound fertilizer is screened through multiple hoists and multiple drum screens. Therefore, when the traditional screening device is in use, it will consume a certain amount of floor space and relatively more energy consumption, which will increase the enterprise's procurement cost to a certain extent. At the same time, the traditional drum screen can only screen large particles, small particles and finished products for each drum screen respectively, and the screen is easy to be blocked, and the screening effect is not ideal. At the same time, after the drum of the traditional drum screen fails, it can only be stopped for repair, delaying delivery. Therefore, a new type of compound fertilizer screening equipment is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and a new type of compound fertilizer screening equipment is proposed. After the compound fertilizer of different particle sizes is conveyed to the storage tank by the feeding box driven by the feeding motor to drive the feeding auger, the second servo motor drives the rotating shaft to rotate, so that the rotating shaft drives the crushing auger to rotate, and then through a plurality of grooves opened on the blades of the crushing auger, the compound fertilizer is crushed by the position difference of each blade when the crushing auger rotates, thus avoiding the problem that the compound fertilizer condenses into blocks and blocks the holes of the drum screen.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A new type of compound fertilizer screening equipment, including two frames, a plurality of supporting rollers are arranged on the inner walls of the sides of the frames close to each other, a first servo motor is fixedly connected to the rear end of the outer wall of one side of the frame, a feeding box is arranged at the front end of the frame, a feeding motor is fixedly connected to the upper surface of the feeding box, the output end of the feeding motor penetrates into the interior of the feeding box and is fixedly connected to a feeding auger, and a hopper is fixedly connected to the lower end of the outer wall of the front end of the feeding box;

[0007] At the front end and the middle of the upper surface of the frame, support columns are fixedly connected. On the upper surfaces of the support columns, screening boxes are fixedly connected. On both sides inside the screening box, a plurality of first screening barrels are arranged. Inside each first screening barrel, a second screening barrel is arranged. On the inner wall of one side of each first screening barrel close to the screening box, a connecting rod is fixedly connected. On the barrel body of each first screening barrel, a plurality of first screening holes are formed. On the inner wall of each first screening barrel, a plurality of first arc-shaped plates are fixedly connected. On the barrel body of each second screening barrel, a plurality of second screening holes are formed. On the inner wall of each second screening barrel, a plurality of second arc-shaped plates are fixedly connected;

[0008] On the upper ends of the screening boxes, storage bins are arranged. On the upper surface of each storage bin, a storage groove is formed. On the outer wall of the rear end of each storage bin, a second servo motor is fixedly connected. The output end of the second servo motor penetrates into the interior of the storage groove and is fixedly connected to a rotating shaft. On the shaft body of the rotating shaft, a crushing auger is arranged. On the blade body of the crushing auger, a plurality of grooves are formed. On the lower surface of the storage bin, a fixing plate is fixedly connected. On the outer walls of both sides of the fixing plate, a plurality of connecting pipes are arranged. On the outer wall of one side of each support column close to the middle of the screening box, an aggregate bin is fixedly connected. On the upper surface of each aggregate bin, an aggregate groove is formed;

[0009] Through the above technical solutions, this new type of compound fertilizer screening equipment can improve production efficiency, improve product quality, reduce labor costs, achieve automated production, and play an important role in promoting and facilitating the compound fertilizer production industry.

[0010] Further, the output end of the first servo motor is fixedly connected to the outer wall of one side of the rear supporting roller. On the roller body of the supporting roller, a conveyor belt is sleeved. On the outer walls of both sides of the front supporting roller, they are rotatably connected to the frame;

[0011] Through the above technical solutions, by fixedly connecting the output end of the first servo motor to the outer wall of one side of the rear supporting roller, sleeving a conveyor belt on the roller body of the supporting roller, and rotatably connecting the outer walls of both sides of the front supporting roller to the frame, the first servo motor can better drive the conveyor belt to rotate, so as to convey the screened compound fertilizer into the coating drum for processing.

[0012] Further, on the inner wall of the rear end of the tipping hopper, a feeding groove is formed. The tipping hopper and the feeding box are connected through the feeding groove. On the upper end of the outer wall of the rear end of the feeding box, a feeding pipe is connected;

[0013] Through the above technical solutions, by forming a feeding groove on the inner wall of the rear end of the tipping hopper, connecting the tipping hopper and the feeding box through the feeding groove, and connecting a feeding pipe to the upper end of the outer wall of the rear end of the feeding box, the compound fertilizer can be better conveyed from a lower place into the interior of the storage bin.

[0014] Furthermore, a plurality of material distributing augers are arranged inside the fixed plate. The outer walls of one side of the first screening barrel close to the middle of the screening frame are rotatably connected to the connecting pipes. A rotating plate is fixedly connected to the inner wall of the second screening barrel. The two ends of the material distributing auger respectively penetrate into the inside of the second screening barrel and are fixedly connected to the rotating plate;

[0015] Through the above technical solution, since a plurality of material distributing augers are arranged inside the fixed plate, the outer walls of one side of the first screening barrel close to the middle of the screening frame are rotatably connected to the connecting pipes, a rotating plate is fixedly connected to the inner wall of the second screening barrel, and the two ends of the material distributing auger respectively penetrate into the inside of the second screening barrel and are fixedly connected to the rotating plate, the compound fertilizer to be screened inside the fixed plate can enter the inside of the second screening barrel better, and the problem that the compound fertilizer accumulates and blocks inside the fixed plate can be avoided by the material distributing auger.

[0016] Furthermore, the outer wall of one side of the second screening barrel away from the center of the screening frame is fixedly connected to a connecting rod. A plurality of electric motors are fixedly connected to the outer wall of one side of the screening frame. The output ends of the electric motors penetrate through the screening frame and are fixedly connected to one side connecting rod. The connecting rod on the side away from the electric motor is rotatably connected to the inner wall of one side of the screening frame;

[0017] Through the above technical solution, since the outer wall of one side of the second screening barrel away from the center of the screening frame is fixedly connected to a connecting rod, a plurality of electric motors are fixedly connected to the outer wall of one side of the screening frame, the output ends of the electric motors penetrate through the screening frame and are fixedly connected to one side connecting rod, and the connecting rod on the side away from the electric motor is rotatably connected to the inner wall of one side of the screening frame, the electric motors can drive the plurality of screening frames to rotate better, so as to screen the compound fertilizer. Moreover, when one of the screening barrels is damaged, the other screening barrels can continue to work, avoiding the problem of shutdown for maintenance when one of the screening barrels is damaged.

[0018] Furthermore, a plurality of discharge holes are respectively formed at the edges of the inner walls of one side of the first screening barrel and the second screening barrel away from the fixed plate;

[0019] Through the above technical solution, since a plurality of discharge holes are respectively formed at the edges of the inner walls of one side of the first screening barrel and the second screening barrel away from the fixed plate, the compound fertilizer remaining inside the first screening barrel and the second screening barrel after screening can flow out better, so that the remaining compound fertilizer can be subjected to the next processing procedure or be pulverized and screened again.

[0020] Furthermore, two supporting columns are respectively fixedly connected to the front end and the rear end of the upper surface of the screening frame. The upper surfaces of the supporting columns are respectively fixedly connected to the front end and the rear end of the lower surface of the storage box;

[0021] Through the above technical solution, two supporting columns are fixedly connected to both the front end and the rear end of the upper surface of the screening box, and the upper surfaces of the supporting columns are fixedly connected to the front end and the rear end of the lower surface of the storage box, so that the supporting columns can better play a role in supporting the storage box.

[0022] Further, one end of the rotating shaft away from the second servo motor is rotatably connected to the front inner wall of the storage tank, and the storage tank is connected to the fixed plate through connection;

[0023] Through the above technical solution, one end of the rotating shaft away from the second servo motor is rotatably connected to the front inner wall of the storage tank, and the storage tank is connected to the fixed plate through connection. Thus, when the rotating shaft drives the crushing auger to rotate, the rotational stability of the rotating shaft can be effectively improved, and thus the compound fertilizer can be better scraped into the interior of the fixed plate evenly.

[0024] Further, support legs are fixedly connected to both the front end and the rear end of the lower surface of the frame;

[0025] Through the above technical solution, support legs are fixedly connected to both the front end and the rear end of the lower surface of the frame, so that the support legs can effectively provide support for the whole device.

[0026] The utility model has the following beneficial effects:

[0027] 1. A new type of compound fertilizer screening device proposed by the utility model. After the compound fertilizer with different particle sizes is conveyed into the storage tank by the conveying motor driving the conveying auger through the arranged feeding box, the second servo motor drives the rotating shaft to rotate, so that the rotating shaft drives the crushing auger to rotate. Then, through a plurality of grooves opened on the blades of the crushing auger, the compound fertilizer is crushed by the position difference of each blade when the crushing auger rotates, thus avoiding the problem that the compound fertilizer condenses into blocks and blocks the holes of the drum screen.

[0028] 2. A new type of compound fertilizer screening device proposed by the utility model. The device drives the connecting rod to rotate through the arranged electric motor, so that the connecting rod drives the first screening barrel and the second screening barrel to rotate. After the compound fertilizer enters the second screening barrel and is screened for the first time through the second screening holes, the smaller compound fertilizer falls into the first screening barrel, while the larger compound fertilizer inside the second screening barrel drives the second arc-shaped plate to move through the rotation of the second screening barrel and is discharged from the discharge hole and falls into the inside of the aggregate tank. The compound fertilizer screened by the first screening barrel falls onto the conveyor belt and is then conveyed to the coating drum by the conveyor belt, so that the screening effect of the screening device on the compound fertilizer can be effectively improved. At the same time, when one of the screening barrels is damaged, the electric motor can be stopped to stop the work of the screening barrel and repair it, avoiding the problem that the traditional drum screen can only be shut down for repair after a failure, resulting in a delay in delivery. Description of the Drawings

[0029] Figure 1 It is an overall axonometric view of a new type of compound fertilizer screening equipment of the present utility model;

[0030] Figure 2 It is a schematic diagram of the overall structure of a new type of compound fertilizer screening equipment of the present utility model;

[0031] Figure 3 It is an axial sectional view of the material conveying box in a new type of compound fertilizer screening equipment of the present utility model;

[0032] Figure 4 It is an axial sectional view of the storage box in a new type of compound fertilizer screening equipment of the present utility model;

[0033] Figure 5 It is a schematic diagram of the structure of the crushing auger in a new type of compound fertilizer screening equipment of the present utility model;

[0034] Figure 6 It is an axonometric view of the screening frame in a new type of compound fertilizer screening equipment of the present utility model;

[0035] Figure 7 It is a schematic diagram of the overall structure of the first screening barrel and the second screening barrel in a new type of compound fertilizer screening equipment of the present utility model;

[0036] Figure 8 It is an axial sectional view of the first screening barrel and the second screening barrel in a new type of compound fertilizer screening equipment of the present utility model;

[0037] Figure 9 It is an axonometric view of the second screening barrel in a new type of compound fertilizer screening equipment of the present utility model;

[0038] Figure 10 It is a schematic diagram of the structure of the second screening barrel in a new type of compound fertilizer screening equipment of the present utility model.

[0039] Legend Explanation:

[0040] 1. Frame; 2. First servo motor; 3. Support leg; 4. Supporting roller; 5. Conveyor belt; 6. Support column; 7. Screening frame; 8. Second servo motor; 9. Groove; 10. Crushing auger; 11. Storage box; 12. Storage tank; 13. Feeding pipe; 14. Feeding motor; 15. Material conveying box; 16. Dumping hopper; 17. Aggregate box; 18. Aggregate tank; 19. Electric motor; 20. Feeding trough; 21. Feeding auger; 22. Rotating shaft; 23. Distributing auger; 24. Connecting pipe; 25. Fixed plate; 26. Supporting column; 27. Connecting rod; 28. Second screening barrel; 29. First screening hole; 30. First screening barrel; 31. First arc plate; 32. Second screening hole; 33. Discharge hole; 34. Second arc plate. Specific embodiments

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] Refer to Figures 1-10 , an embodiment provided by the present utility model is as follows:

[0043] A new type of compound fertilizer screening device includes two frames 1. A plurality of supporting rollers 4 are arranged on the inner walls of the sides of the frames 1 close to each other. A first servo motor 2 is fixedly connected to the rear end of the outer wall of one side of one frame 1. Feeding boxes 15 are arranged at the front ends of the frames 1. A feeding motor 14 is fixedly connected to the upper surface of the feeding box 15. The output end of the feeding motor 14 penetrates into the interior of the feeding box 15 and is fixedly connected to a feeding auger 21. A tipping hopper 16 is fixedly connected to the lower end of the front outer wall of the feeding box 15;

[0044] Support columns 6 are fixedly connected to the front end and the middle of the upper surface of the frame 1. A screening frame 7 is fixedly connected to the upper surface of the support column 6. A plurality of first screening barrels 30 are arranged on both sides inside the screening frame 7. A second screening barrel 28 is arranged inside each first screening barrel 30. Connecting rods 27 are fixedly connected to the inner walls of the sides of the first screening barrels 30 close to the screening frame 7. A plurality of first screening holes 29 are formed in the barrel bodies of the first screening barrels 30. A plurality of first arc-shaped plates 31 are fixedly connected to the inner walls of the first screening barrels 30. A plurality of second screening holes 32 are formed in the barrel bodies of the second screening barrels 28. A plurality of second arc-shaped plates 34 are fixedly connected to the inner walls of the second screening barrels 28;

[0045] Storage boxes 11 are arranged at the upper ends of the screening frames 7. A storage groove 12 is formed in the upper surface of the storage box 11. A second servo motor 8 is fixedly connected to the rear outer wall of the storage box 11. The output end of the second servo motor 8 penetrates into the interior of the storage groove 12 and is fixedly connected to a rotating shaft 22. A crushing auger 10 is arranged on the shaft body of the rotating shaft 22. A plurality of grooves 9 are formed in the blade bodies of the crushing auger 10. A fixing plate 25 is fixedly connected to the lower surface of the storage box 11. A plurality of connecting pipes 24 are arranged on the outer walls of both sides of the fixing plate 25. Aggregate boxes 17 are fixedly connected to the outer walls of the sides of the support columns 6 close to the middle of the screening frame 7. Aggregate grooves 18 are formed in the upper surfaces of the aggregate boxes 17;

[0046] This new type of compound fertilizer screening equipment can improve production efficiency, enhance product quality, reduce labor costs, and achieve automated production, playing an important role in promoting and facilitating the compound fertilizer production industry.

[0047] The output end of the first servo motor 2 is fixedly connected to the outer wall of one side of the rear supporting roller 4. The conveyor belt 5 is sleeved on the roller body of the supporting roller 4. The outer walls on both sides of the front supporting roller 4 are rotatably connected to the frame 1. By fixedly connecting the output end of the first servo motor 2 to the outer wall of one side of the rear supporting roller 4, the conveyor belt 5 is sleeved on the roller body of the supporting roller 4, and the outer walls on both sides of the front supporting roller 4 are rotatably connected to the frame 1, so that the first servo motor 2 can better drive the conveyor belt 5 to rotate, thereby conveying the screened compound fertilizer into the coating drum for processing. The inner wall of the rear end of the hopper 16 is provided with a feed chute 20. The hopper 16 and the material conveying box 15 are connected through the feed chute 20. The upper end of the outer wall of the rear end of the material conveying box 15 is connected with a material conveying pipe 13. By arranging the feed chute 20 on the inner wall of the rear end of the hopper 16, the hopper 16 and the material conveying box 15 are connected through the feed chute 20, and the upper end of the outer wall of the rear end of the material conveying box 15 is connected with a material conveying pipe 13, so that the compound fertilizer can be better conveyed from a lower place into the storage box 11.

[0048] A plurality of distributing augers 23 are arranged inside the fixing plate 25. The outer walls on one side of the first screening barrel 30 close to the middle of the screening frame 7 are rotatably connected to the connecting pipe 24. A rotating plate 35 is fixedly connected to the inner wall of the second screening barrel 28. The two ends of the distributing auger 23 respectively penetrate into the inside of the second screening barrel 28 and are fixedly connected to the rotating plate 35. By arranging a plurality of distributing augers 23 inside the fixing plate 25, the outer walls on one side of the first screening barrel 30 close to the middle of the screening frame 7 are rotatably connected to the connecting pipe 24, a rotating plate 35 is fixedly connected to the inner wall of the second screening barrel 28, and the two ends of the distributing auger 23 respectively penetrate into the inside of the second screening barrel 28 and are fixedly connected to the rotating plate 35, so that the compound fertilizer to be screened inside the fixing plate 25 can better enter the inside of the second screening barrel 28, and the problem of accumulation and blockage of the compound fertilizer inside the fixing plate 25 can be avoided by the distributing auger 23.

[0049] One side outer wall of the second screening barrel 28 away from the center of the screening frame 7 is fixedly connected to the connecting rod 27. A plurality of electric motors 19 are fixedly connected to one side outer wall of the screening frame 7. The output end of the electric motor 19 penetrates through the screening frame 7 and is fixedly connected to one side connecting rod 27. The connecting rod 27 on the side away from the electric motor 19 is rotatably connected to the inner wall of one side of the screening frame 7. By fixedly connecting one side outer wall of the second screening barrel 28 away from the center of the screening frame 7 to the connecting rod 27, fixedly connecting a plurality of electric motors 19 to one side outer wall of the screening frame 7, the output end of the electric motor 19 penetrating through the screening frame 7 and being fixedly connected to one side connecting rod 27, and the connecting rod 27 on the side away from the electric motor 19 being rotatably connected to the inner wall of one side of the screening frame 7, the motor 19 can better drive a plurality of screening frames 7 to rotate, so as to screen the compound fertilizer. And when one of the screening barrels is damaged, other screening barrels can continue to work, avoiding the problem of shutdown for maintenance when one of the screening barrels is damaged.

[0050] A plurality of discharge holes 33 are provided at the edges of the inner walls of the first screening barrel 30 and the second screening barrel 28 away from the fixing plate 25. By providing a plurality of discharge holes 33 at the edges of the inner walls of the first screening barrel 30 and the second screening barrel 28 away from the fixing plate 25, the compound fertilizer remaining inside the first screening barrel 30 and the second screening barrel 28 after screening can flow out better, so that the remaining compound fertilizer can be subjected to the next processing procedure or be pulverized and screened again. Two supporting columns 26 are fixedly connected to the front end and the rear end of the upper surface of the screening frame 7 respectively. The upper surfaces of the supporting columns 26 are fixedly connected to the front end and the rear end of the lower surface of the storage box 11 respectively.

[0051] By fixedly connecting two supporting columns 26 to the front end and the rear end of the upper surface of the screening frame 7 respectively, and the upper surfaces of the supporting columns 26 being fixedly connected to the front end and the rear end of the lower surface of the storage box 11 respectively, the supporting columns 26 can better play a role in supporting the storage box 11.

[0052] One end of the rotating shaft 22 away from the second servo motor 8 is rotatably connected to the inner wall of the front end of the storage tank 12. The storage tank 12 is connected to the fixing plate 25 in a penetrating manner. By one end of the rotating shaft 22 away from the second servo motor 8 being rotatably connected to the inner wall of the front end of the storage tank 12 and the storage tank 12 being connected to the fixing plate 25 in a penetrating manner, the rotational stability of the rotating shaft 22 can be effectively improved when the rotating shaft 22 drives the crushing auger 10 to rotate, so that the compound fertilizer can be better scraped into the fixing plate 25 evenly. Support legs 3 are fixedly connected to the front end and the rear end of the lower surface of the frame 1 respectively. By fixedly connecting support legs 3 to the front end and the rear end of the lower surface of the frame 1 respectively, the support legs 3 can effectively provide support for the whole device.

[0053] Working principle: When in use, start the first servo motor 2 to drive the supporting roller 4 to rotate, so that the supporting roller 4 drives the conveyor belt 5 to rotate. Then the staff pour the compound fertilizer to be screened into the feeding hopper 16, and then start the feeding motor 14 to drive the feeding auger 21 to rotate, so as to convey the compound fertilizer to be screened into the feeding pipe 13, and then drop it into the storage tank 12 through the feeding pipe 13. Then start the servo electric motor 19 to drive the connecting rod 27 to rotate, so that the connecting rod 27 drives the first screening barrel 30 and the second screening barrel 28 to rotate. Then start the second servo motor 8 to drive the rotating shaft 22 to rotate, so that the rotating shaft 22 drives the crushing auger 10 to rotate. Thus, through the multiple grooves 9 opened on the blades of the crushing auger 10, the compound fertilizer is crushed by using the position difference of each blade when the crushing auger 10 rotates. Then it is fed by the distributing auger 23 and flows into the second screening barrels 28 on both sides respectively. After the compound fertilizer enters the second screening barrel 28, it is screened for the first time through the second screening holes 29, so that the smaller compound fertilizer falls into the first screening barrel 30. The larger compound fertilizer inside the second screening barrel 28 is discharged from the discharge hole 33 along the second arc-shaped plate 31 and falls into the inside of the aggregate tank 18 due to the rotation of the second screening barrel 28. The compound fertilizer screened by the first screening barrel 30 falls onto the conveyor belt 5 and is then conveyed to the coating drum by the conveyor belt 5, which can effectively improve the screening effect of the screening equipment on the compound fertilizer. At the same time, when one of the screening barrels is damaged, the electric motor 19 can be stopped to stop the work of this screening barrel for maintenance. Then the compound fertilizer discharged from the discharge holes 33 on both sides of the first screening barrel 30 and the second screening barrel 28 is discharged from the aggregate tank 18 for the next step of processing.

[0054] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of compound fertilizer screening device, comprising two frames (1), characterized in that: On the inner walls of the mutually adjacent sides of the frame (1), a plurality of supporting rollers (4) are provided. At the rear end of the outer wall of one side of the frame (1), a first servo motor (2) is fixedly connected. At the front ends of the frame (1), a feeding box (15) is provided. On the upper surface of the feeding box (15), a feeding motor (14) is fixedly connected. The output end of the feeding motor (14) penetrates into the interior of the feeding box (15) and is fixedly connected to a feeding auger (21). At the lower end of the front outer wall of the feeding box (15), a tipping hopper (16) is fixedly connected. At the front end and the middle of the upper surface of the frame (1), support columns (6) are fixedly connected. On the upper surfaces of the support columns (6), a screening box (7) is fixedly connected. On both sides inside the screening box (7), a plurality of first screening barrels (30) are provided. Inside each of the first screening barrels (30), a second screening barrel (28) is provided. On the inner wall of one side of each first screening barrel (30) close to the screening box (7), a connecting rod (27) is fixedly connected. On the barrel body of each first screening barrel (30), a plurality of first screening holes (29) are formed. On the inner wall of each first screening barrel (30), a plurality of first arc-shaped plates (31) are fixedly connected. On the barrel body of the second screening barrel (28), a plurality of second screening holes (32) are formed. On the inner wall of each second screening barrel (28), a plurality of second arc-shaped plates (34) are fixedly connected. At the upper ends of the screening box (7), a storage box (11) is provided. On the upper surface of the storage box (11), a storage groove (12) is formed. At the rear outer wall of the storage box (11), a second servo motor (8) is fixedly connected. The output end of the second servo motor (8) penetrates into the interior of the storage groove (12) and is fixedly connected to a rotating shaft (22). On the shaft body of the rotating shaft (22), a crushing auger (10) is provided. On the blade body of the crushing auger (10), a plurality of grooves (9) are formed. On the lower surface of the storage box (11), a fixing plate (25) is fixedly connected. On both outer walls of the fixing plate (25), a plurality of connecting pipes (24) are provided. On the outer wall of one side of the support column (6) close to the middle of the screening box (7), an aggregate box (17) is fixedly connected. On the upper surface of the aggregate box (17), an aggregate groove (18) is formed.

2. A novel compound fertilizer screening device according to claim 1, characterized in that: The output end of the first servo motor (2) is fixedly connected to the outer wall of one side of the rear supporting roller (4). A conveyor belt (5) is sleeved on the roller body of the supporting roller (4). The outer walls of both sides of the front supporting roller (4) are rotatably connected to the frame (1).

3. A novel compound fertilizer screening device according to claim 1, characterized in that: At the rear inner wall of the tipping hopper (16), a feeding groove (20) is formed. The tipping hopper (16) is connected to the feeding box (15) through the feeding groove (20). At the upper end of the rear outer wall of the feeding box (15), a feeding pipe (13) is connected through.

4. A novel compound fertilizer screening device according to claim 1, characterized in that: A plurality of feeding augers (23) are arranged inside the fixed plate (25). One outer wall of the first screening barrel (30) near the middle of the screening frame (7) is rotatably connected to a connecting pipe (24). A rotating plate (35) is fixedly connected to the inner wall of the second screening barrel (28). Two ends of the feeding auger (23) respectively penetrate into the inside of the second screening barrel (28) and are fixedly connected to the rotating plate (35).

5. A novel compound fertilizer screening device according to claim 1, characterized in that: One outer wall of the second screening barrel (28) away from the center of the screening frame (7) is fixedly connected to a connecting rod (27). A plurality of electric motors (19) are fixedly connected to one outer wall of the screening frame (7). An output end of the electric motor (19) penetrates through the screening frame (7) and is fixedly connected to one connecting rod (27). The connecting rod (27) away from the electric motor (19) is rotatably connected to one inner wall of the screening frame (7).

6. The novel compound fertilizer screening equipment according to claim 1, characterized in that: A plurality of discharge holes (33) are formed at the edges of the inner walls of the first screening barrel (30) and the second screening barrel (28) away from the fixed plate (25).

7. A novel compound fertilizer screening device according to claim 1, characterized in that: Two supporting columns (26) are fixedly connected to the front end and the rear end of the upper surface of the screening frame (7). Upper surfaces of the supporting columns (26) are fixedly connected to the front end and the rear end of the lower surface of the storage box (11).

8. A novel compound fertilizer screening device according to claim 1, characterized in that: One end of the rotating shaft (22) away from the second servo motor (8) is rotatably connected to the front inner wall of the storage tank (12). The storage tank (12) is connected to the fixed plate (25) in a through manner.

9. A novel compound fertilizer screening device according to claim 1, characterized in that: Support legs (3) are fixedly connected to the front end and the rear end of the lower surface of the frame (1).

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