Rolling granulator for dry-method fertilizer production

Abstract

The utility model discloses a rolling granulator for dry-method fertilizer production, which belongs to the technical field of granulators and comprises a granulation box, a feeding barrel is fixedly connected to the top surface of the granulation box, a feeding mechanism is arranged on the feeding barrel, a screening mechanism is arranged in an inner cavity of the granulation box, and the screening mechanism is connected with the granulation box. An inner cavity of the granulation box is rotationally connected with two forming granulation rollers, and the inner side faces of the two forming granulation rollers are attached to each other. According to the utility model, the third motor drives the first reciprocating screw rod to rotate, and the first reciprocating screw rod and the scraper blade are in threaded fit to drive the scraper blade to move back and forth, so that when a granulation raw material falls to the inner sides of the top ends of the two forming granulation rollers, the raw material is scraped by the scraper blade; and the raw materials are uniformly distributed to the inner sides of the top ends of the two forming granulation rollers, so that high-quality granulation can be realized through the granulation holes in the two forming granulation rollers, incomplete granulation and forming of some fertilizers are avoided, and the practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of granulator technology, and more specifically, to a roller press granulator for dry fertilizer production. Background Technology

[0002] The production process of fertilizers mainly includes two processes: wet processing and dry processing. The dry processing method involves mechanically mixing and grinding raw materials in a solid state, and then directly producing granular fertilizers through specific equipment and technology. Roller granulators are required during the processing.

[0003] A search revealed that utility model patent CN220737443U discloses a granulation device for fertilizer production, comprising a mounting shell, hinges, a door panel, a feeding frame, a servo motor, and rollers. Two hinges are fixedly connected to one side of the mounting shell, and the door panel is fixedly connected to both hinges. The feeding frame is fixedly connected to the mounting shell and is connected to the mounting shell. A servo motor is mounted on the mounting shell, and two rollers are rotatably arranged inside the mounting shell. The output shaft of the servo motor is connected to the adjacent rollers via a key. By activating the heating wire, the granular fertilizer can be dried as it falls from the guide frame, thereby increasing the strength of the granular fertilizer and preventing it from being easily damaged during subsequent transportation.

[0004] However, the above patent still has the following shortcomings: when the raw material is placed between the two rollers, it is not easy to ensure that the raw material is evenly distributed on the upper part of the rollers, which can easily lead to some fertilizer granules not forming completely, affecting the quality of granulation; in addition, manual feeding is required for the granulator, which is not convenient for automatic feeding. Therefore, we have proposed a roller press granulator for dry fertilizer production. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a roller press granulator for dry fertilizer production.

[0006] To solve the above problems, this utility model adopts the following technical solution: a roller press granulator for dry fertilizer production, comprising a granulation box, a feeding cylinder fixedly connected to the top surface of the granulation box, a feeding mechanism provided on the feeding cylinder, a screening mechanism provided in the inner cavity of the granulation box, and two forming granulation rollers rotatably connected to the inner cavity of the granulation box, the inner surfaces of the two forming granulation rollers being in contact with each other, one end of the rotating shaft of each of the two forming granulation rollers extending to the outside of the granulation box and fixedly sleeved with a spur gear, the two spur gears meshing with each other, and the granulation box... A first motor is fixedly installed on the side. The output shaft of the first motor is connected to the other end of a forming granulation roller shaft. The end faces of the two forming granulation rollers are respectively in contact with the inner wall of the granulation box. A first reciprocating screw is rotatably connected to the top of the inner cavity of the granulation box. A first sliding rod is fixedly sleeved on the top of the inner cavity of the granulation box. A third motor is fixedly installed at the end of the granulation box. The output shaft of the third motor is connected to the end of the first reciprocating screw. A scraper is threaded onto the outer side of the first reciprocating screw. The scraper and the first sliding rod are movably sleeved together.

[0007] In a preferred embodiment of this utility model, the feeding mechanism includes a second reciprocating screw rotatably connected to the inner cavity of the feeding cylinder, a second sliding rod fixedly sleeved in the inner cavity of the feeding cylinder, and a second motor fixedly installed on the end face of the feeding cylinder. The output shaft of the second motor is connected to the end of the second reciprocating screw. A movable frame is threaded onto the outer side of the second reciprocating screw. The movable frame and the second sliding rod are movably sleeved together. A feeding tube is fixedly sleeved on the inner side of the movable frame. A storage hopper is fixedly connected to the top of the feeding tube. A support frame is fixedly connected to the top surface of the storage hopper. A fourth motor is fixedly installed on the top surface of the support frame. The output shaft of the fourth motor extends into the inner cavity of the storage hopper and is fixedly connected to a spiral conveying rod. The bottom end of the spiral conveying rod extends into the inner cavity of the feeding tube. The inner wall of the feeding tube and the side of the spiral conveying rod are in contact with each other.

[0008] As a preferred embodiment of the present invention, the screening mechanism includes two support seats fixedly connected to the inner wall of the granulation box. Multiple springs are fixedly connected to the top surface of each of the two support seats, and a sieve plate is fixedly connected to the top of the multiple springs. The side of the sieve plate is in contact with the inner wall of the granulation box.

[0009] As a preferred embodiment of this utility model, a material receiving door is hinged to the outer side of the bottom end of the granulation box, and a material receiving box is placed at the bottom of the inner cavity of the granulation box, with the side of the material receiving box fitting against the inner wall of the granulation box.

[0010] As a preferred embodiment of this utility model, guide plates are fixedly connected to both sides of the top of the granulation box cavity.

[0011] As a preferred embodiment of this utility model, a viewing plate is fixedly sleeved on one side of the granulation box, a control panel is fixedly installed on the other side of the granulation box, and a discharge hopper is provided on the other side of the granulation box, with the top surface of the discharge hopper located below the top surface of the sieve plate.

[0012] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, the first reciprocating screw is rotated by the third motor, and the scraper is moved back and forth by the threaded engagement between the first reciprocating screw and the scraper. When the granulation raw material falls to the inner side of the top of the two forming granulation rollers, the scraper scrapes the raw material to ensure that the raw material is evenly distributed to the inner side of the top of the two forming granulation rollers, thereby ensuring that the granulation holes on the two forming granulation rollers can granulate with high quality and avoid some fertilizer granulation incomplete formation.

[0013] In this invention, a fourth motor drives a spiral conveyor to rotate, which guides the raw material in the storage hopper into the inner cavity of the granulation box. A second motor drives a second reciprocating screw to rotate, and the threaded connection between the second reciprocating screw and the moving frame causes the moving frame, the injection pipe, and the storage hopper to reciprocate along the axial direction of the second slide rod. This ensures that the raw material falling from the bottom of the injection pipe is distributed at all positions inside the tops of the two forming granulation rollers, and also achieves automatic connection and feeding of the granulator, making it highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the front of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the back of this utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the present invention;

[0017] Figure 4 This is a cross-sectional schematic diagram of the granulation box of this utility model;

[0018] Figure 5 This is a cross-sectional schematic diagram of the storage hopper of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Granulation box; 2. Discharge cylinder; 3. Feeding mechanism; 4. Forming and granulating roller; 5. Spur gear; 6. First motor; 7. Screening mechanism; 8. First reciprocating screw; 9. First slide bar; 10. Scraper; 11. Third motor; 12. Discharge hopper; 13. Second reciprocating screw; 14. Second slide bar; 15. Second motor; 16. Moving frame; 17. Injection pipe; 18. Storage hopper; 19. Support frame; 20. Fourth motor; 21. Spiral conveyor rod; 22. Support base; 23. Spring; 24. Screen plate; 26. Receiving box; 27. Discharge gate; 28. Transparent panel; 29. ​​Control panel; 30. Guide plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0024] Please see Figure 1-5A roller press granulator for dry fertilizer production includes a granulation box 1, a feeding cylinder 2 fixedly connected to the top surface of the granulation box 1, a feeding mechanism 3 provided on the feeding cylinder 2, a screening mechanism 7 provided inside the granulation box 1, two forming granulation rollers 4 rotatably connected to the inside of the granulation box 1, the inner surfaces of the two forming granulation rollers 4 being in contact with each other, one end of the rotating shaft of each forming granulation roller 4 extending to the outside of the granulation box 1 and fixedly sleeved with a spur gear 5, the two spur gears 5 meshing with each other, and a first motor 6 fixedly installed on the side of the granulation box 1. The output shaft of a motor 6 is connected to the other end of the shaft of a forming granulation roller 4. The end faces of the two forming granulation rollers 4 are respectively in contact with the inner wall of the granulation box 1. The top of the inner cavity of the granulation box 1 is rotatably connected to a first reciprocating screw 8. The top of the inner cavity of the granulation box 1 is fixedly sleeved with a first sliding rod 9. The end of the granulation box 1 is fixedly installed with a third motor 11. The output shaft of the third motor 11 is connected to the end of the first reciprocating screw 8. The outer side of the first reciprocating screw 8 is threaded with a scraper 10. The scraper 10 and the first sliding rod 9 are movably sleeved together.

[0025] In this embodiment, the scraper 10 is limited by the movable sleeve between the first slide rod 9 and the scraper 10, so that the scraper 10 can only move along the axial direction of the first reciprocating screw 8.

[0026] For details, please refer to Figure 1 , Figure 3 and Figure 5 The feeding mechanism 3 includes a second reciprocating screw 13 rotatably connected to the inner cavity of the feeding cylinder 2, a second slide rod 14 fixedly sleeved in the inner cavity of the feeding cylinder 2, and a second motor 15 fixedly installed on the end face of the feeding cylinder 2. The output shaft of the second motor 15 is connected to the end of the second reciprocating screw 13. A movable frame 16 is threadedly sleeved on the outer side of the second reciprocating screw 13. The movable frame 16 and the second slide rod 14 are movably sleeved together. A feeding tube 17 is fixedly sleeved on the inner side of the movable frame 16. A storage hopper 18 is fixedly connected to the top end of the feeding tube 17. A support frame 19 is fixedly connected to the top surface of the storage hopper 18. A fourth motor 20 is fixedly installed on the top surface of the support frame 19. The output shaft of the fourth motor 20 extends into the inner cavity of the storage hopper 18 and is fixedly connected to a spiral conveying rod 21. The bottom end of the spiral conveying rod 21 extends into the inner cavity of the feeding tube 17. The inner wall of the feeding tube 17 and the side of the spiral conveying rod 21 are in contact with each other.

[0027] In this embodiment, the movable frame 16 is limited by the movable sleeve between the second slide rod 14 and the movable frame 16, ensuring that the movable frame 16 can only move along the axial direction of the second reciprocating screw 13.

[0028] For details, please refer to Figure 3The screening mechanism 7 includes two support seats 22 fixedly connected to the inner wall of the granulation box 1. Multiple springs 23 are fixedly connected to the top surface of each of the two support seats 22. A sieve plate 24 is fixedly connected to the top of the multiple springs 23. The side of the sieve plate 24 is in contact with the inner wall of the granulation box 1.

[0029] In this embodiment, the inner wall of the granulation box 1 is used to limit the sieve plate 24, so that the sieve plate 24 can only move up and down.

[0030] For details, please refer to Figure 2 and Figure 3 A material receiving door 27 is hinged to the outer side of the bottom of the granulation box 1. A receiving box 26 is placed at the bottom of the inner cavity of the granulation box 1. The side of the receiving box 26 is in contact with the inner wall of the granulation box 1.

[0031] In this embodiment, the particles and powder filtered by the sieve plate 24 are collected through the receiving box 26, and the receiving box 26 is taken out by opening the material dispensing door 27.

[0032] For details, please refer to Figure 3 The top of the granulation box 1 is fixedly connected to two sides of the top of the granulation box 1.

[0033] In this embodiment, the fertilizer raw materials are guided by the guide plate 30 to ensure that the raw materials can enter the inner side of the two forming and granulating rollers 4.

[0034] For details, please refer to Figure 1 and Figure 2 A viewing plate 28 is fixedly fitted on one side of the granulation box 1, and a control panel 29 is fixedly installed on the other side of the granulation box 1. A discharge hopper 12 is provided on the other side of the granulation box 1, and the top surface of the discharge hopper 12 is located below the top surface of the sieve plate 24.

[0035] In this embodiment, the granulation process inside the granulation box 1 is observed through the viewing plate 28, and the device is controlled by the control panel 29. The fertilizer granules filtered on the screen plate 24 are discharged through the discharge hopper 12.

[0036] Working principle: In use, the fertilizer raw material to be granulated is first placed into the inner cavity of the storage hopper 18. At the same time, the first motor 6 is started to drive one forming granulation roller 4 and one spur gear 5 to rotate. Through the meshing transmission between the two spur gears 5, the other forming granulation roller 4 is driven to rotate, so that the two forming granulation rollers 4 rotate inward synchronously. In addition, the second motor 15 and the third motor 11 are started. The second motor 15 drives the second reciprocating screw 13 to rotate. Through the threaded engagement between the second reciprocating screw 13 and the moving frame 16, the moving frame 16, the injection pipe 17 and the storage hopper 18 reciprocate along the axial direction of the second slide rod 14. The third motor 11 drives the first reciprocating screw 8 to rotate. Through the threaded engagement between the first reciprocating screw 8 and the scraper 10, the scraper is driven to rotate. The scraper 10 moves back and forth along the axial direction of the first reciprocating screw 8. The direction of movement of the scraper 10 is opposite to that of the storage hopper 18. Then, the fourth motor 20 is started to drive the screw conveyor 21 to rotate. The screw conveyor 21 guides the raw material in the storage hopper 18 into the inner cavity of the granulation box 1. The position of the material is adjusted by moving the storage hopper 18 and the injection pipe 17. The scraper 10 scrapes the raw material falling between the two forming granulation rollers 4 to ensure the uniformity of the raw material between the two forming granulation rollers 4. Finally, the fertilizer granulated by the two forming granulation rollers 4 falls onto the screen plate 24. The screen plate 24 is used to screen the qualified and unqualified fertilizer. The qualified waste material is discharged from the discharge hopper 12, and the unqualified fertilizer falls into the receiving box 26.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A roll granulator for dry method fertilizer production, comprising a granulation box (1), characterized in that: The top surface of the granulating box (1) is fixedly connected with a discharging cylinder (2), the discharging cylinder (2) is provided with a feeding mechanism (3), the inner cavity of the granulating box (1) is provided with a screening mechanism (7), the inner cavity of the granulating box (1) is rotatably connected with two forming granulating rollers (4), the inner sides of the two forming granulating rollers (4) are attached to each other, one end of the rotating shafts of the two forming granulating rollers (4) extends to the outside of the granulating box (1) and is fixedly sleeved with a straight gear (5), the two straight gears (5) are meshed with each other, a first motor (6) is fixedly installed on the side surface of the granulating box (1), the output shaft of the first motor (6) is connected with the other end of the rotating shaft of one forming granulating roller (4), the end surfaces of the two forming granulating rollers (4) are respectively attached to the inner walls of the granulating box (1), a first reciprocating screw rod (8) is rotatably connected with the top of the inner cavity of the granulating box (1), a first sliding rod (9) is fixedly sleeved with the top of the inner cavity of the granulating box (1), a third motor (11) is fixedly installed on the end of the granulating box (1), the output shaft of the third motor (11) is connected with the end of the first reciprocating screw rod (8), a scraper (10) is threadedly sleeved with the outer side of the first reciprocating screw rod (8), and the scraper (10) and the first sliding rod (9) are movably sleeved.

2. A roll granulator for dry process fertilizer production as claimed in claim 1, characterized in that: The feeding mechanism (3) comprises a second reciprocating screw rod (13) rotatably connected in the inner cavity of the discharging cylinder (2), a second sliding rod (14) fixedly sleeved in the inner cavity of the discharging cylinder (2) and a second motor (15) fixedly installed on the end surface of the discharging cylinder (2), the output shaft of the second motor (15) is connected with the end of the second reciprocating screw rod (13), a moving frame (16) is threadedly sleeved with the outer side of the second reciprocating screw rod (13), the moving frame (16) and the second sliding rod (14) are movably sleeved, an injection pipe (17) is fixedly sleeved in the inner side of the moving frame (16), a storage hopper (18) is fixedly connected with the top end of the injection pipe (17), a supporting frame (19) is fixedly connected with the top surface of the storage hopper (18), a fourth motor (20) is fixedly installed on the top surface of the supporting frame (19), the output shaft of the fourth motor (20) extends to the inner cavity of the storage hopper (18) and is fixedly connected with a spiral conveying rod (21), the bottom end of the spiral conveying rod (21) extends to the inner cavity of the injection pipe (17), and the inner wall of the injection pipe (17) and the side surface of the spiral conveying rod (21) are attached to each other.

3. A roll granulator for dry process fertilizer production as claimed in claim 1, wherein: The screening mechanism (7) comprises two supporting seats (22) fixedly connected with the inner walls of the granulating box (1), the top surfaces of the two supporting seats (22) are fixedly connected with a plurality of springs (23), the top ends of the plurality of springs (23) are fixedly connected with a screen plate (24), and the side surface of the screen plate (24) and the inner wall of the granulating box (1) are attached to each other.

4. A roll granulator for dry process fertilizer production as claimed in claim 1, wherein: The bottom end of the granulating box (1) is hingedly connected with a material taking door (27), and the bottom of the inner cavity of the granulating box (1) is placed with a receiving box (26), and the side surface of the receiving box (26) and the inner wall of the granulating box (1) are attached to each other.

5. A roll granulator for dry process fertilizer production as claimed in claim 1, wherein: Two sides of the top of the granulation box (1) are respectively fixedly connected with guide plates (30).

6. A roll granulator for dry process fertilizer production as claimed in claim 3 wherein: One side of the granulation box (1) is fixedly sleeved with a perspective plate (28), the other side of the granulation box (1) is fixedly installed with a control panel (29), the other side of the granulation box (1) is provided with a discharge hopper (12), and the top surface of the discharge hopper (12) is located below the top surface of the sieve plate (24).

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