Environment-friendly fertilizer granulating and drying device

Abstract

The utility model belongs to the technical field of fertilizer granulation, particularly relates to an environment-friendly fertilizer granulation drying device, and aims to solve the problems that a whole set of cooling machinery is high in purchase and maintenance cost, occupies a large plant space, needs a large amount of fuel in a drying process, increases cost input and is not beneficial to environmental protection. Comprising a processing bin, two extrusion forming rollers matched for use are arranged in the processing bin, and a plurality of semicircular grooves are densely formed in the surfaces of the extrusion forming rollers. Raw materials containing drying-free powder are adopted, the raw materials can be efficiently extruded into particles through the design of the extrusion forming rollers, configuration of cooling machines and the requirement for a large amount of fuel in a traditional drying procedure are reduced, and cost input is reduced; fuel consumption and waste gas emission are reduced, environmental protection and sustainable development are facilitated, meanwhile, the device is compact in structure and small in occupied plant space, and the space utilization rate is increased.

Description

An environmentally friendly fertilizer granulation and drying device Technical Field

[0001] This utility model relates to the field of fertilizer granulation technology, and in particular to an environmentally friendly fertilizer granulation and drying device. Background Technology

[0002] Fertilizer granulation is the process of processing fertilizer raw materials into granules, which is of great significance in fertilizer production. Granulated fertilizer particles are uniform, which can reduce the hazards such as moisture absorption, clumping, and dust generation during sales and distribution. Furthermore, granular fertilizer is suitable for mechanized fertilization, which can improve the efficiency and accuracy of fertilization.

[0003] Currently, the purchase and maintenance costs of a complete set of cooling machinery in fertilizer granulation production are relatively high, and it also occupies a large amount of factory space. Furthermore, the drying process requires a large amount of fuel, which not only increases the cost but is also detrimental to environmental protection.

[0004] To address the aforementioned problems, this utility model document proposes an environmentally friendly fertilizer granulation and drying device. Summary of the Invention

[0005] This utility model provides an environmentally friendly fertilizer granulation and drying device, which solves the shortcomings of the existing technology, such as the high purchase and maintenance cost of a complete set of cooling machinery, the large amount of factory space occupied, and the large amount of fuel required in the drying process, which not only increases the cost but is also detrimental to environmental protection.

[0006] This utility model provides the following technical solution:

[0007] An environmentally friendly fertilizer granulation and drying device includes:

[0008] The processing chamber is equipped with two matching extrusion forming rollers. The surface of the extrusion forming rollers is densely decorated with multiple semi-circular grooves. The transmission rods at both ends of the extrusion forming rollers are rotatably connected to the inner wall of the processing chamber through bearings. An inclined plate for guiding the flow is fixedly installed inside the processing chamber. The lower part of the inclined plate is set through the discharge port on the side wall of the processing chamber.

[0009] The slag screening assembly is located below the discharge port and is used to screen out slag.

[0010] In one possible design, the drive rod at one end of the extrusion forming roller passes through the outer wall of the processing chamber and is fixedly equipped with a drive gear. The two drive gears mesh with each other. A drive motor for driving one of the extrusion forming rollers to rotate is fixedly installed on the outer wall of the processing chamber. The output shaft of the drive motor passes through the inner wall of the processing chamber and is fixedly connected to the drive rod at the other end of one of the extrusion forming rollers.

[0011] In one possible design, the top of the processing chamber is connected to a hollow material hood, the bottom of which is fixedly provided with a material duct to prevent the raw material from being too dispersed, the outlet of which faces the central area of ​​the two extrusion forming rollers, and the top of the material hood is fixedly provided with a feeding hopper for adding raw material mixed with no-drying powder.

[0012] In one possible design, the slag screening assembly includes a screen plate disposed below the discharge port. One side of the screen plate is hinged to the outer wall of the processing chamber, and an electric push rod is hinged to the other side of the screen plate. A reinforcing plate is hinged to the other end of the electric push rod. Two reserved holes for reinforcing with the ground are symmetrically arranged on the reinforcing plate. A slag receiving plate is disposed below the screen plate and is placed on the ground.

[0013] In one possible design, the front end of the screen disc has two symmetrical notches for discharging material, and a corresponding baffle is provided in the notch. The inner wall of the notch is provided with slots for inserting and fixing the two ends of the baffle. The screen disc and the baffle are reinforced by two threaded bolts.

[0014] In one possible design, the two transmission gears are covered by the same security cover, which is fixedly connected to the outer wall of the processing chamber by bolts at the four corners, and the security cover is provided with heat dissipation holes.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0016] The working principle and usage process of this technical solution are as follows:

[0017] When using, the fertilizer raw materials and the no-drying powder are mixed evenly in a certain proportion to ensure that the moisture and composition of the raw materials meet the granulation requirements. The mixed raw materials are added to the granulation hood through the feeding hopper. The design of the granulation hood helps the raw materials fall in a concentrated manner and avoids dispersion. After the drive motor is started, the output shaft of the drive motor drives one of the extrusion forming rollers to rotate. Through the meshing transmission gears, the other extrusion forming roller rotates in the opposite direction. Under the guidance of the granulation pipe, the mixed raw materials fall into the central area between the two extrusion forming rollers. The semi-circular grooves on the surface of the two extrusion forming rollers cooperate to extrude the raw materials. The raw materials are extruded into granules. The extruded granules are discharged from the processing chamber from the discharge port through the guiding effect of the inclined plate.

[0018] The discharged granules fall onto the screen plate for screening. The electric push rod extends and retracts, causing the screen plate to swing around the hinge point, screening the fertilizer granules falling from the discharge port. The crushed slag falls through the screen plate into the slag receiving tray, while the qualified fertilizer granules remain on the screen plate. The operator can clean the slag receiving tray regularly. When it is necessary to discharge qualified fertilizer granules, unscrew the bolt, pull out the baffle, and the fertilizer granules will be discharged from the notch.

[0019] This utility model has the following beneficial effects:

[0020] This invention uses raw materials containing drying-free powder and the design of extrusion forming rollers enables the raw materials to be efficiently extruded into granules, reducing the need for large amounts of fuel required by traditional drying processes and lowering cost input. At the same time, it simplifies the configuration of cooling machinery, further reducing purchase and maintenance costs.

[0021] This invention reduces fuel consumption and exhaust emissions, which is beneficial to environmental protection and sustainable development. At the same time, the device has a compact structure, occupies little factory space, and improves space utilization.

[0022] The slag screening component in this invention facilitates timely separation of slag, improves product quality, and the structural design of the screen disc facilitates material discharge and cleaning. Attached Figure Description

[0023] Figure 1 is a three-dimensional structural schematic diagram of an environmentally friendly fertilizer granulation and drying device provided in an embodiment of this utility model;

[0024] Figure 2 is a schematic diagram of the separation structure of the safety cover and processing chamber of an environmentally friendly fertilizer granulation and drying device provided in an embodiment of this utility model;

[0025] Figure 3 is a schematic diagram of the internal structure of the processing chamber of an environmentally friendly fertilizer granulation and drying device provided in an embodiment of this utility model;

[0026] Figure 4 is a schematic diagram of the slag screening component of an environmentally friendly fertilizer granulation and drying device provided in an embodiment of this utility model.

[0027] Reference numerals: 1. Processing chamber; 2. Extrusion forming roller; 3. Transmission gear; 4. Drive motor; 5. Inclined plate; 6. Discharge port; 7. Material collection hood; 8. Material collection pipe; 9. Feeding hopper; 10. Screen plate; 11. Electric push rod; 12. Reinforcing plate; 13. Reserved hole; 14. Notch; 15. Baffle; 16. Slot; 17. Bolt; 18. Slag receiving tray; 19. Safety cover; 20. Heat dissipation hole. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0030] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted. Embodiment 1

[0031] Please refer to Figures 1-4. A granulation device mainly includes a processing chamber 1, an extrusion forming roller 2, and a slag screening assembly. Its working principle is to extrude fertilizer raw materials mixed with pre-dried powder into granules using the extrusion forming roller 2. The granules are then screened by the slag screening assembly to remove debris, resulting in qualified fertilizer granules. This device, through optimized structure and process, reduces the fuel requirements of traditional drying processes, lowers costs, and is also environmentally friendly.

[0032] The processing chamber 1 is made of 304 stainless steel with a polished inner wall to prevent material adhesion. Inside the processing chamber 1, there are two matching extrusion forming rollers 2. The surface of the extrusion forming rollers 2 is densely covered with multiple semi-circular grooves (groove depth 5mm, spacing 3mm) to extrude the raw material into granules. The roller core is made of 45# steel (heat treated HRC28-32) with a tungsten carbide coating on the surface, which takes into account both wear resistance and corrosion resistance. The drive rods at both ends of the extrusion forming rollers 2 are rotatably connected to the inner wall of the processing chamber 1 through deep groove ball bearings (model 6312, lubrication method: lithium-based grease periodically added) to ensure the stable rotation of the extrusion forming rollers 2. An inclined plate 5 for guiding flow is fixedly installed inside the processing chamber 1. The lower part of the inclined plate 5 is set through the discharge port 6 on the side wall of the processing chamber 1. The surface of the inclined plate 5 is coated with Teflon, so that the particles slide quickly into the discharge port 6 along the plate surface.

[0033] One of the extrusion forming rollers 2 has a transmission rod that passes through the outer wall of the processing chamber 1 and is fixedly equipped with a transmission gear 3. The transmission gear 3 is made of 45# steel (surface hardened HRC50-55). The two transmission gears 3 mesh with each other to achieve synchronous rotation of the two extrusion forming rollers 2. A drive motor 4 is fixedly installed on the outer wall of the processing chamber 1. The drive motor 4 is a variable frequency speed-regulating three-phase asynchronous motor (model Y2-160M-4) and can be equipped with a reducer. Its output shaft is connected to the right extrusion roller transmission rod through a coupling to provide power to the extrusion forming roller 2.

[0034] The top of the processing chamber 1 is equipped with a detachable hollow material hood 7, and the bottom of the material hood 7 is fixedly equipped with a material duct 8, which is lined with a polyurethane wear-resistant layer. The opening of the material duct 8 faces the central area of ​​the two extrusion forming rollers 2, and is used to concentrate and guide the raw materials to the extrusion forming rollers 2. The material duct 8 accurately guides the raw materials to the two opposing rotating extrusion forming rollers 2. The top of the material hood 7 is fixedly equipped with a feeding hopper 9, which facilitates the addition of fertilizer raw materials mixed with non-drying powder (modified diatomaceous earth). Modified diatomaceous earth can quickly absorb free water, reducing the drying requirement.

[0035] The slag screening assembly includes a screen plate 10 located below the discharge port 6. The screen mesh is made of 316L stainless steel. One side of the screen plate 10 is hinged to the outer wall of the processing chamber 1, and the other side is hinged to an electric push rod 11 (model LAC20). The other end of the electric push rod 11 is hinged to a reinforcing plate 12. The reinforcing plate 12 has two reserved holes 13 symmetrically arranged on it for reinforcing with the ground, ensuring the stability of the screen plate 10 during the screening process. The electric push rod 11 extends and retracts to drive the screen plate 10 to swing around the hinge point to screen the fertilizer particles falling from the discharge port 6. A slag receiving plate 18 is located below the screen plate 10. The slag receiving plate 18 is placed on the ground to collect the screened slag.

[0036] The screen plate 10 has two symmetrical notches 14 for discharging material at its front end. A corresponding baffle 15 is provided in the notch 14. The inner wall of the notch 14 is provided with slots 16 for inserting and fixing the two ends of the baffle 15. The screen plate 10 and the baffle 15 are reinforced by two threaded bolts 17 to ensure the stability of the baffle 15 during the screening process, and at the same time facilitate disassembly and cleaning as needed.

[0037] This application can be used in fertilizer granulation production, and also in other fields applicable to this application. Example 2

[0038] Improvements based on Example 1:

[0039] An environmentally friendly fertilizer granulation and drying device is used in the granulation field.

[0040] Please refer to Figures 1-2. The two transmission gears 3 are covered by the same Q235 carbon steel (powder-coated surface, 1.2mm thick) security cover 19. The security cover 19 is fixedly connected to the outer wall of the processing chamber 1 by bolts at the four corners to ensure the safe operation of the transmission gears 3 and effectively prevent the gear lubricating oil from splashing. The security cover 19 is provided with louvered heat dissipation holes 20 to facilitate heat dissipation of the transmission gears 3 during operation.

[0041] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 4 and the electric push rod 11 are commonplace and are all conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An environmentally friendly fertilizer granulation and drying device, characterized in that, include: The processing chamber (1) is equipped with two extrusion forming rollers (2) for use. The surface of the extrusion forming rollers (2) is densely provided with multiple semi-circular grooves. The transmission rods at both ends of the extrusion forming rollers (2) are rotatably connected to the inner wall of the processing chamber (1) through bearings. An inclined plate (5) for guiding flow is fixedly installed inside the processing chamber (1). The lower part of the inclined plate (5) is set through the discharge port (6) on the side wall of the processing chamber (1). The slag screening assembly is located below the discharge port (6) and is used to screen the slag.

2. The environmentally friendly fertilizer granulation and drying device according to claim 1, characterized in that, The transmission rod at one end of the extrusion forming roller (2) passes through the outer wall of the processing chamber (1) and is fixedly provided with a transmission gear (3). The two transmission gears (3) mesh with each other. A drive motor (4) for driving one of the extrusion forming rollers (2) to rotate is fixedly installed on the outer wall of the processing chamber (1). The output shaft of the drive motor (4) passes through the inner wall of the processing chamber (1) and is fixedly connected to the transmission rod at the other end of one of the extrusion forming rollers (2).

3. The environmentally friendly fertilizer granulation and drying device according to claim 1, characterized in that, The top of the processing chamber (1) is connected to a hollow material hood (7), and the bottom of the material hood (7) is fixedly provided with a material duct (8) to prevent the raw materials from being too dispersed. The opening of the material duct (8) faces the central area of ​​the two extrusion molding rollers (2). The top of the material hood (7) is fixedly provided with a feeding hopper (9) for adding raw materials mixed with dry-free powder.

4. The environmentally friendly fertilizer granulation and drying device according to claim 1, characterized in that, The slag screening assembly includes a screen plate (10) located below the discharge port (6). One side of the screen plate (10) is hinged to the outer wall of the processing chamber (1). An electric push rod (11) is hinged to the other side of the screen plate (10). A reinforcing plate (12) is hinged to the other end of the electric push rod (11). Two reserved holes (13) for reinforcing the ground are symmetrically arranged on the reinforcing plate (12). A slag receiving plate (18) is located below the screen plate (10) and is placed on the ground.

5. The environmentally friendly fertilizer granulation and drying device according to claim 4, characterized in that, The screen plate (10) has two symmetrical notches (14) for discharging material at its front end. A corresponding baffle (15) is provided in the notch (14). The inner wall of the notch (14) is provided with slots (16) for inserting and fixing the two ends of the baffle (15). The screen plate (10) and the baffle (15) are reinforced by two threaded bolts (17).

6. The environmentally friendly fertilizer granulation and drying device according to claim 2, characterized in that, The two transmission gears (3) are covered by the same security cover (19), which is fixedly connected to the outer wall of the processing chamber (1) by bolts at the four corners. The security cover (19) is provided with heat dissipation holes (20).

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