Double-roller extrusion granulating device for compound fertilizer production

Abstract

The utility model discloses a double roll extrusion granulating device for compound fertilizer production, including motor base, the lower portion fixed coupling of motor base has universal wheel and antiskid pad, and the upper portion fixed coupling has the reducer casing, the upper portion of reducer casing is connected with the feed hopper through the clamping groove formula, the inside fixed coupling of feed hopper has the filter screen, the lower portion fixed coupling of filter screen has the gear, the one side fixed coupling of gear has the input coupling, the one side fixed coupling of feed hopper has the wear -resisting bush, and the lower portion fixed coupling has the roller axial locking nut, the inside fixed coupling of roller axial locking nut has the roller end face sealing ring, the inside fixed coupling of roller end face sealing ring has the bearing gland and the plummer block bearing, and double roll extrusion granulating device is the key equipment of compound fertilizer production, and its structural stability and operating efficiency directly influence product quality and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of compound fertilizer production technology, specifically a double-roller extrusion granulation device for compound fertilizer production. Background Technology

[0002] The twin-roll extrusion granulation unit is a key piece of equipment in compound fertilizer production. Its structural stability and operating efficiency directly affect product quality and production continuity. In existing technologies, traditional units generally have the following problems: First, it is difficult to balance the movement and fixation of the equipment. The base design often focuses on a single function, resulting in inconvenience in adjusting the layout of the production site. Second, the feeding system lacks an effective pretreatment mechanism. Impurities or lumps in the material can easily cause channel blockage, requiring frequent shutdowns for cleaning. Third, as a core component, the extrusion rollers have insufficient temperature control precision, often causing material to stick to the roller surface due to local overheating, affecting the granulation rate. Fourth, the lubrication and cooling systems have low integration and messy pipeline layout, making it easy to make mistakes during maintenance. Fifth, the components are mostly rigidly fixed by welding or bolts, resulting in large assembly errors and loosening after long-term operation. Utility Model Content

[0003] The purpose of this invention is to provide a double-roller extrusion granulation device for compound fertilizer production, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-roller extrusion granulation device for compound fertilizer production, comprising a motor base, a universal wheel and an anti-slip pad fixedly connected to the lower part of the motor base, and a reducer housing fixedly connected to the upper part; a feed funnel is connected to the upper part of the reducer housing via a slot, a gear is fixedly connected inside the feed funnel, a filter screen is fixedly connected inside the feed funnel, and an input coupling is fixedly connected to one side of the gear; a wear-resistant bushing is fixedly connected to one side of the feed funnel, and a roller axial locking nut is fixedly connected to the lower part, a roller end face sealing ring is fixedly connected inside the roller end face sealing ring, and a bearing cover and a self-aligning roller bearing are fixedly connected inside the roller end face sealing ring; a lubrication pipeline is fixedly connected to the outer side of the roller axial locking nut, and a frame side plate is fixedly connected between the lubrication pipeline and the feed funnel.

[0005] As a further embodiment of this utility model: a cooling water distributor is fixedly connected to the side plate of the frame.

[0006] As a further embodiment of this utility model: a main extrusion roller is fixedly connected to one outer end of the cooling water distributor, and T-shaped plates are connected to both outer ends of the main extrusion roller through slots.

[0007] As a further embodiment of this utility model: a roller temperature sensor mounting base is fixedly connected inside the main extrusion roller, and high-pressure hoses and disc spring assemblies are fixedly connected to both ends of the roller temperature sensor mounting base. A safety protective cover is also fixedly connected inside the main extrusion roller.

[0008] As a further embodiment of this utility model: the roller temperature sensor mounting base is internally fixedly connected to a spline connecting sleeve, a screw conveyor shaft and a directional control valve, and a threaded water pipe is fixedly connected between the three. A wear-resistant alloy water pipe is fixedly connected to one side of the spline connecting sleeve.

[0009] As a further embodiment of this utility model: an overflow valve is fixedly connected to one end of the outer side of the directional control valve, and an accumulator, a driven gear, and a hydraulic piston rod are fixedly connected to both ends of the directional control valve, the screw conveyor shaft, and the spline connecting sleeve; the lower part of the driven gear is fixedly connected to the screw conveyor shaft, and the top of the directional control valve is fixedly connected to a hydraulic cylinder support.

[0010] As a further embodiment of this utility model: a planar guide rail is fixedly connected to one outer end of the spiral conveying shaft, a roller gap detection dial is fixedly connected to one outer end of the planar guide rail, a main drive shaft is fixedly connected to one outer end of the roller gap detection dial, and a universal coupling is fixedly connected to the middle of the outer side of the main drive shaft.

[0011] As a further embodiment of this utility model: a discharge scraper is fixedly connected to the lower end of the universal joint.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The lower part of the motor base of this device is simultaneously fixed with casters and anti-slip pads, which not only meets the need for flexible movement of the equipment, but also ensures the stability during operation through the anti-slip pads, improving site adaptability. A filter screen is added inside the feed hopper, which can intercept impurities and large pieces of material in advance. With the detachable structure of the slot-type connection, it is easy to clean and replace the filter screen, reducing the risk of blockage. The main extrusion roller has a built-in roller temperature sensor mounting base, which, together with the cooling water distributor and high-pressure hose, forms a temperature control system that can monitor and adjust the roller temperature in real time, avoiding quality problems caused by overheating or uneven cooling of materials. The roller axial locking nut and the frame side plate are integrated with a lubrication pipeline to achieve precise lubrication of key components and reduce wear. At the same time, the assembly method of combining slot-type and fixed connection improves the structural accuracy and stability. The setting of the safety guard enhances the operational safety, and the modular component layout allows maintenance without disassembling the entire structure, only requiring targeted replacement of damaged parts, shortening downtime. In addition, the application of wear-resistant bushings and self-aligning roller bearings extends the life of vulnerable parts. Attached Figure Description

[0013] Figure 1The three-dimensional reducer housing proposed in this utility model Figure 1 ;

[0014] Figure 2 The three-dimensional reducer housing proposed in this utility model Figure 2 ;

[0015] Figure 3 The three-dimensional reducer housing proposed in this utility model Figure 3 ;

[0016] Figure 4 The three-dimensional reducer housing proposed in this utility model Figure 4 ;

[0017] Figure 5 A cross-sectional view of a novel double-roller extrusion granulation device for compound fertilizer production.

[0018] Figure 6 A partial detail of a novel double-roller extrusion granulation device for compound fertilizer production;

[0019] Figure 7 A partial detail of a novel double-roller extrusion granulation device for compound fertilizer production;

[0020] In the diagram: 1. Motor base; 2. Main drive shaft; 3. Reducer housing; 4. Input coupling; 5. Gear; 6. Feed hopper; 7. Casters; 8. Filter screen; 9. T-shaped plate; 10. Hydraulic cylinder support; 11. Frame side plate; 12. Lubrication pipeline; 13. Roller axial lock nut; 14. Cooling water distributor; 15. Safety guard; 16. Driven gear; 17. Flat guide rail; 18. Roller gap detection dial; 19. Universal coupling; 20. 21. Discharge scraper; 22. Anti-slip pad; 23. Main extrusion roller; 24. Wear-resistant bushing; 25. Roller end face sealing ring; 26. Bearing cover; 27. Self-aligning roller bearing; 28. Screw conveyor shaft; 29. ​​Spline connecting sleeve; 30. Hydraulic piston rod; 31. Accumulator; 32. Overflow valve; 33. Directional control valve; 34. High-pressure hose; 35. Roller temperature sensor mounting base; 36. Disc spring assembly; 37. Threaded water pipe; 38. Wear-resistant alloy water pipe. Detailed Implementation

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

[0022] Please see Figure 1-7In this embodiment of the present invention, a double-roller extrusion granulation device for compound fertilizer production includes a motor base 1. A universal wheel 7 and an anti-slip pad 21 are fixedly connected to the lower part of the motor base 1, and a reducer housing 3 is fixedly connected to the upper part. A feed hopper 6 is connected to the upper part of the reducer housing 3 via a slot. A gear 5 and a filter screen 8 are fixedly connected inside the feed hopper 6. An input coupling 4 is fixedly connected to one side of the gear 5. A wear-resistant bushing 23 is fixedly connected to one side of the feed hopper 6, and a roller axial locking nut 13 is fixedly connected to the lower part. A roller end face sealing ring 24 is fixedly connected inside the roller end face sealing ring 24. A bearing cap 25 and a self-aligning roller bearing 26 are fixedly connected inside the roller end face sealing ring 24. A lubrication pipe 12 is fixedly connected to the outer side of the roller axial locking nut 13, and a frame side plate 11 is fixedly connected between the nut and the feed hopper 6.

[0023] In this invention, preferably, the cooling water distributor 14 fixed to the side plate 11 of the frame can accurately deliver coolant to the main extrusion roller 22. Combined with the roller temperature sensor mounting base 34 and high-pressure hose 33 inside the roller, a closed-loop temperature control system is formed, effectively preventing material adhesion or poor forming due to temperature fluctuations. The two ends of the main extrusion roller 22 are connected by T-shaped plates 9 with slotted joints, simplifying the assembly process and enabling quick positioning and replacement, while also enhancing the structural strength of both ends of the roller. The roller temperature sensor mounting base 34 integrates a spline connecting sleeve 28, a spiral conveyor shaft 27, and a directional control valve 32. The threaded water pipe 36 and wear-resistant alloy water pipe 37 in the middle of these three components cooperate to achieve efficient transmission of hot and cold media, reducing... With minimal pipeline losses, the overflow valve 31 on the outside of the directional control valve 32 can automatically adjust the hydraulic system pressure. Together with the accumulators 30 at both ends and the hydraulic piston rod 29, it ensures stable pressure during the extrusion process and avoids affecting the uniformity of granulation due to load fluctuations. The screw conveyor shaft 27 is connected to the roller gap detection dial 18 through the flat guide rail 17, which can precisely adjust the roller gap. Together with the universal joint 19 of the main drive shaft 2, it improves transmission efficiency and compensates for assembly errors. The discharge scraper 20 at the lower end of the universal joint 19 can promptly remove residual material on the roller surface and prevent agglomeration. The overall design, through modular component integration and precise control, achieves coordinated adjustment of temperature, pressure, and gap, significantly improving the stability of granulation quality and the reliability of equipment operation.

[0024] The working principle of this utility model is as follows: During use, compound fertilizer raw materials are fed into the feeding funnel 6. The raw materials first pass through the filter screen 8 inside the feeding funnel 6 to remove impurities and large pieces of material. Then, the material falls onto the gear 5. The power of the motor is transmitted to the gear 5 through the input coupling 4, causing the gear 5 to rotate and transport the material. The casters 7 at the bottom of the motor base 1 allow for overall movement of the equipment. After moving to the designated position, it is fixed by the anti-slip pad 21 to ensure stability during operation. The reducer housing 3 on the upper part of the motor base 1 reduces the power output of the motor before transmitting it to subsequent components. The feeding funnel 6 is fixed to the upper part of the reducer housing 3 via a slotted connection for easy disassembly and maintenance. The feeding funnel 6 has a wear-resistant... The bushing 23 reduces wear on the inner wall of the hopper from the material. The lower roller axial locking nut 13 fixes the roller end face sealing ring 24, bearing cap 25, and self-aligning roller bearing 26 inside. The self-aligning roller bearing 26 ensures the flexibility of the roller rotation, and the roller end face sealing ring 24 prevents material leakage. The lubrication pipe 12 on the outside of the roller axial locking nut 13 delivers lubricating oil to rotating parts such as the self-aligning roller bearing 26 to reduce wear. The frame side plate 11 connects the roller axial locking nut 13 to the feed hopper 6. The cooling water distributor 14 fixed on it delivers cooling water to the main extrusion roller 22 through the high-pressure hose 33. The outer ends of the main extrusion roller 22 are reinforced by T-shaped plates 9 connected by slots to enhance the roller structure. The temperature of the main extrusion roller 22 is monitored in real time by a roller temperature sensor mounting base 34 inside the main extrusion roller 22. The temperature signal is fed back to the control system, which controls the temperature of the main extrusion roller 22 by adjusting the water supply of the cooling water distributor 14 to prevent the material from being affected by excessively high or low temperatures, thus avoiding impacting the granulation quality. The spline connecting sleeve 28, the screw conveyor shaft 27, and the directional control valve 32 inside the roller temperature sensor mounting base 34 work together. The screw conveyor shaft 27 pushes the material to the extrusion area, and the directional control valve 32 controls the hydraulic system. The overflow valve 31 at one end of the directional control valve 32 adjusts the system pressure to prevent excessive pressure from damaging components. The accumulators 30 at both ends of the directional control valve 32, the screw conveyor shaft 27, and the spline connecting sleeve 28 stabilize the hydraulic system pressure. The hydraulic piston rod 29 drives the roller to move to adjust the roller gap. The hydraulic cylinder support 10 provides support for the hydraulic piston rod 29. The flat guide rail 17 at one end of the outer side of the screw conveyor shaft 27, together with the roller gap detection scale 18, precisely adjusts the gap of the main extrusion roller 22 to ensure uniform granulation particle size. The main drive shaft 2 transmits power to the main extrusion roller 22 through the universal coupling 19, driving the main extrusion roller 22 to rotate and extrude and granulate the material. The discharge scraper 20 at the lower end of the universal coupling 19 scrapes the extruded particles off the surface of the main extrusion roller 22 to complete the granulation process. The safety guard 15 inside the main extrusion roller 22 prevents foreign objects from entering the roller and ensures the safe operation of the equipment.

[0025] 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-roller extrusion granulation device for compound fertilizer production, comprising a motor base (1), characterized in that: The lower part of the motor base (1) is fixedly connected to a caster wheel (7) and an anti-slip pad (21), and the upper part is fixedly connected to a reducer housing (3); the upper part of the reducer housing (3) is connected to a feed hopper (6) via a slot, a gear (5) is fixedly connected inside the feed hopper (6), a filter screen (8) is fixedly connected inside the feed hopper (6), and an input coupling (4) is fixedly connected to one side of the gear (5); one side of the feed hopper (6) is fixedly connected to... A wear-resistant bushing (23) is attached, and a roller axial locking nut (13) is fixedly connected to the lower part. A roller end face sealing ring (24) is fixedly connected inside the roller end face sealing ring (24). A bearing cover (25) and a self-aligning roller bearing (26) are fixedly connected inside the roller end face sealing ring (24). A lubrication pipeline (12) is fixedly connected to the outer side of the roller axial locking nut (13), and a frame side plate (11) is fixedly connected between it and the feed hopper (6).

2. The double-roller extrusion granulation device for compound fertilizer production according to claim 1, characterized in that: The side plate (11) of the frame is fixedly connected to a cooling water distributor (14).

3. The double-roller extrusion granulation device for compound fertilizer production according to claim 2, characterized in that: The outer end of the cooling water distributor (14) is fixedly connected to the main extrusion roller (22), and both outer ends of the main extrusion roller (22) are connected to T-shaped plates (9) through slots.

4. The double-roller extrusion granulation device for compound fertilizer production according to claim 3, characterized in that: The main extrusion roller (22) is fixedly connected to a roller temperature sensor mounting base (34). Both ends of the roller temperature sensor mounting base (34) are fixedly connected to a high-pressure hose (33) and a disc spring assembly (35). The main extrusion roller (22) is also fixedly connected to a safety guard (15).

5. The double-roller extrusion granulation device for compound fertilizer production according to claim 4, characterized in that: The roller temperature sensor mounting base (34) is internally fixedly connected to a spline connecting sleeve (28), a screw conveyor shaft (27) and a direction control valve (32), with a threaded water pipe (36) fixedly connected in the middle of the three, and a wear-resistant alloy water pipe (37) fixedly connected to one side of the spline connecting sleeve (28).

6. The double-roller extrusion granulation device for compound fertilizer production according to claim 5, characterized in that: An overflow valve (31) is fixedly connected to one end of the outer side of the directional control valve (32), and an accumulator (30), a driven gear (16) and a hydraulic piston rod (29) are fixedly connected to both ends of the directional control valve (32), the screw conveyor shaft (27) and the spline connecting sleeve (28); the lower part of the driven gear (16) is fixedly connected to the screw conveyor shaft (27), and the top of the directional control valve (32) is fixedly connected to the hydraulic cylinder support (10).

7. A double-roller extrusion granulation device for compound fertilizer production according to claim 6, characterized in that: A planar guide rail (17) is fixedly connected to one outer end of the spiral conveying shaft (27), a roller gap detection dial (18) is fixedly connected to one outer end of the planar guide rail (17), a main drive shaft (2) is fixedly connected to one outer end of the roller gap detection dial (18), and a universal coupling (19) is fixedly connected to the middle of the outer side of the main drive shaft (2).

8. The double-roller extrusion granulation device for compound fertilizer production according to claim 7, characterized in that: The lower end of the universal joint (19) is fixedly connected to a discharge scraper (20).

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