Extrusion granulation equipment for needle-shaped fertilizer production
By introducing a separation cylinder and spiral blades into the extrusion granulation equipment, the problem of granulated powder entering the collection frame was solved, enabling efficient screening and reuse of needle-shaped fertilizer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, extrusion granulation equipment fails to effectively screen out broken powders during the production of needle fertilizer, causing them to enter the collection box and resulting in raw material waste.
An extrusion granulation device comprising a fixed ring, a fixed frame, and a separation cylinder was designed. The device uses spiral blades and filter holes inside the separation cylinder for sieving, and combines the design of a flow divider and a sealing plate to achieve the separation and collection of needle-shaped fertilizer and granular powder.
This technology effectively separates needle-shaped fertilizer from granular powder, reducing raw material waste and improving processing efficiency and finished product quality.
Smart Images

Figure CN224071904U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an extrusion granulation device, specifically an extrusion granulation device for needle fertilizer production, belonging to the field of needle fertilizer production technology. Background Technology
[0002] Needle fertilizer is a type of functional fertilizer. Its main shape is strip-shaped or needle-like. It has the characteristics of stable structure and complete water solubility. Depending on the variety, it mainly includes granular water-soluble fertilizer and single-element fertilizer.
[0003] In the production of needle-shaped fertilizer, extrusion granulation equipment is used for forming. The forming equipment mainly includes a barrel, a drive unit, and a rotary mill. During processing, the material is squeezed by the rotary mill and passes through the holes in the screen barrel to form granules. The size of the granules is controlled by the screen holes inside the screen barrel. For example, the roller pressure control processing technology used in rotary granulators can perform dry granulation. A collection hopper is also installed on the outside of the screen barrel to collect the fertilizer squeezed out at the screen barrel position into the collection frame. However, the existing technology does not have a structure installed on the outside of the screen barrel to screen the processed needle-shaped fertilizer. During use, if the extrusion roller does not squeeze sufficiently, fragments and powder will form inside the needle-shaped fertilizer. These fragments and powder will enter the collection frame along with the extruded needle-shaped fertilizer, resulting in the extra consumption of raw materials. To address this problem, we provide an extrusion granulation equipment for needle-shaped fertilizer production. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides an extrusion granulation device for needle fertilizer production, the specific technical solution of which is as follows:
[0005] An extrusion granulation device for needle fertilizer production includes a base, an extrusion assembly installed inside the base, a processing cylinder installed outside the base, a sieve cylinder detachably connected inside the processing cylinder, a collection hopper fixedly installed on the outer surface of the processing cylinder, a fixing ring and a support ring fixedly installed inside the collection hopper, a fixing shaft rotatably connected inside the fixing ring and the support ring, a fixing frame fixedly installed on the outer surface of the fixing shaft, a separation cylinder fixedly installed on the outer surface of the fixing frame, and a spiral blade installed inside the separation cylinder.
[0006] Preferably, the inside of the collecting hopper is provided with a fixing groove, and a diverting plate is slidably connected inside the fixing groove, with the tip of the diverting plate located in the middle of the collecting hopper.
[0007] Preferably, multiple sets of baffles are fixedly installed on the inner wall of the collection hopper, and the multiple sets of baffles are symmetrically arranged inside the collection hopper, with one end of the baffle located at the inlet of the separation cylinder.
[0008] Preferably, a sealing plate is fixedly installed inside the collecting hopper, the outer surface of the sealing plate is in contact with one end of the separating cylinder, and an inlet is provided at the contact position between the sealing plate and the baffle.
[0009] Preferably, a fixing plate is detachably installed on the outer surface of the first collecting hopper, and a second collecting hopper is fixedly installed at one end of the fixing plate. The second collecting hopper has an incline and gradually decreases towards the outside of the first collecting hopper.
[0010] Preferably, a feed hopper is fixedly installed at one end of the processing cylinder, a control motor is installed on the outside of the fixing ring, and the output end of the control motor is fixedly installed on the outer surface of the fixing shaft.
[0011] Preferably, the fixed shaft is symmetrically arranged inside the first collection hopper, and the separating cylinder is symmetrically arranged inside the first collection hopper with their discharge ports close to each other.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This extrusion granulation equipment for needle fertilizer production, through the cooperation of a fixed ring, a fixed frame, and a separation cylinder, allows the raw material extruded by the extrusion assembly to pass through the screen cylinder and then enter the separation cylinder. The needle fertilizer is then screened as the separation cylinder rotates. The mesh inside the separation cylinder allows the broken material and powder generated during processing to leak out, thus separating the needle fertilizer from the broken powder. This makes it convenient for workers to collect the broken powder again and put it into the processing cylinder for further processing. This achieves the function of filtering and screening the processed needle fertilizer, which is beneficial for collecting the broken powder inside the needle fertilizer.
[0014] 2. This extrusion granulation equipment for needle fertilizer production, through the setting of components such as a diversion plate and a sealing plate, allows the extruded needle fertilizer to move through the first collection hopper. Then, under the action of the tip of the diversion plate, it moves to the two sides of the first collection hopper. Under the action of the baffle and sealing plate, the diverted needle fertilizer falls into the feed inlet and enters the separation cylinder. Under the rotation of the separation cylinder and the spiral blades, the needle fertilizer can be screened. After screening, the needle fertilizer can fall into the external collection frame through the discharge port of the separation cylinder. The screened fragments and powder can be collected through the second collection hopper and put back into the feed hopper for use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is an exploded view of the present invention.
[0017] Figure 3 This is a schematic diagram of a component of the collection bucket of this utility model;
[0018] Figure 4 This is a schematic diagram of the separator cylinder component of this utility model;
[0019] Figure 5 This is a schematic diagram of the sealing plate component of this utility model.
[0020] Figure descriptions: 1. Base; 2. Extrusion assembly; 3. Processing cylinder; 4. Screen cylinder; 5. Collection hopper one; 6. Fixing ring; 7. Support ring; 8. Fixing shaft; 9. Fixing frame; 10. Separating cylinder; 11. Spiral blade; 12. Fixing groove; 13. Diverting plate; 14. Baffle; 15. Sealing plate; 16. Feed inlet; 17. Fixing plate; 18. Collection hopper two; 19. Feed hopper; 20. Control motor. Detailed Implementation
[0021] The present invention will now be further described with reference to the accompanying drawings.
[0022] Please see Figure 1 - Figure 5 An extrusion granulation device for producing needle-shaped fertilizer includes a base 1, an extrusion assembly 2 installed inside the base 1, and a processing cylinder 3 installed outside the base 1. A feed hopper 19 is fixedly installed at one end of the processing cylinder 3, through which needle-shaped fertilizer raw materials can be put into the processing cylinder 3. A screen cylinder 4 is detachably connected inside the processing cylinder 3. The extrusion assembly 2 includes components such as a pressing roller and a drive motor. The pressing roller cooperates with the screen cylinder 4 to extrude the raw materials entering the processing cylinder 3. The extruded needle-shaped fertilizer can fall out through the holes inside the screen cylinder 4, thus processing and shaping the needle-shaped fertilizer. The size of the particles is controlled by the screen holes inside the screen cylinder 4. The screen cylinder 4 can be replaced by multiple sets of fixing bolts to facilitate the selection of needle-shaped fertilizer of different sizes. A collection hopper 5 is fixedly installed on the outer surface of the processing cylinder 3. The collection hopper 5 has an inclined structure, and the needle-shaped fertilizer processed by the screen cylinder 4 can fall out under the action of the collection hopper 5.
[0023] The inside of the collection hopper 5 is provided with a fixing groove 12, and a diverting plate 13 is slidably connected inside the fixing groove 12. The tip of the diverting plate 13 is located in the middle of the collection hopper 5. The diverting plate 13 can be quickly installed through the fixing groove 12. The needle-shaped fertilizer processed by the screen cylinder 4 can move to both sides of the collection hopper 5 under the action of the diverting plate 13, so as to realize the automatic diversion of the needle-shaped fertilizer.
[0024] Inside the collection hopper 5, a fixing ring 6 and a support ring 7 are fixedly installed. A fixing shaft 8 is rotatably connected inside both the fixing ring 6 and the support ring 7. The fixing shafts 8 are symmetrically arranged inside the collection hopper 5. A control motor 20 is installed outside the fixing ring 6. The output end of the control motor 20 is fixedly installed to the outer surface of the fixing shaft 8. Multiple sets of fixing rings 6 and support rings 7 are symmetrically arranged on both sides of the collection hopper 5, which can support and fix multiple sets of fixing shafts 8. Under the drive of the control motor 20, the fixing shafts 8 can be rotated.
[0025] Multiple sets of baffles 14 are fixedly installed on the inner wall of the collection hopper 5. The multiple sets of baffles 14 are symmetrically arranged inside the collection hopper 5. One end of the baffle 14 is located at the inlet of the separation cylinder 10. The needle-shaped fertilizer that has passed through the diversion can be guided by the baffle 14. At this time, with the cooperation of the baffle 14 and the diversion plate 13, the needle-shaped fertilizer will enter the interior of the separation cylinder 10 for screening.
[0026] A fixed frame 9 is fixedly installed on the outer surface of the fixed shaft 8, and a separation cylinder 10 is fixedly installed on the outer surface of the fixed frame 9. The separation cylinders 10 are symmetrically arranged inside the collection hopper 5 and their outlets are close to each other. By setting up separation cylinders 10 on both sides, the needle-shaped fertilizer separated by the diversion plate 13 can enter the interior of the separation cylinder 10 for screening, thereby improving the screening efficiency. Spiral blades 11 are installed inside the separation cylinder 10, and multiple sets of filter holes are opened inside the separation cylinder 10. Different filtering functions of the separation cylinder 10 can be selected according to different screening requirements. The needle-shaped fertilizer can be controlled by the cooperation of the spiral blades 11 and the separation cylinder 10. At this time, the needle-shaped fertilizer entering the interior of the separation cylinder 10 will move towards the outlet position of the separation cylinder 10, and can be screened inside the separation cylinder 10.
[0027] A sealing plate 15 is fixedly installed inside the collection hopper 5. The outer surface of the sealing plate 15 is in contact with one end of the separation cylinder 10. An inlet 16 is provided at the contact position between the sealing plate 15 and the baffle 14. The separation cylinder 10 can be sealed by the sealing plate 15 on one side. At this time, the needle-shaped fertilizer guided by the separation plate and the baffle 14 will enter through the inlet 16. With the cooperation of the baffle 14 and the sealing plate 15, the needle-shaped fertilizer can be prevented from falling into the outside of the collection hopper 5.
[0028] A fixing plate 17 is detachably installed on the outer surface of the first collection hopper 5. A second collection hopper 18 is fixedly installed at one end of the fixing plate 17. The second collection hopper 18 has an incline and gradually decreases towards the outside of the first collection hopper 5. The second collection hopper 18 can be disassembled through the fixing plate 17. The needle-shaped fertilizer fragments after screening will fall into the interior of the second collection hopper 18 and be collected at the outlet of the second collection hopper 18. The collected raw materials can then be put back into the feed hopper 19 for reuse.
[0029] The electrical equipment in this application is a common type of electrical equipment in the prior art. This application will not elaborate on its model or internal structure. It can also be replaced by other power sources.
[0030] In use, the raw material is placed into the feed hopper 19. The roller pressing component inside the extrusion assembly 2 applies pressure to the raw material, which is then discharged through the holes inside the screen cylinder 4. This allows the needle-shaped fertilizer to be extruded and formed. Under the action of the diversion plate 13, the needle-shaped fertilizer falling into the collection hopper 1 5 moves to both sides of the collection hopper 1 5. Then, under the action of the baffle 14 and the sealing plate 15, the needle-shaped fertilizer enters the feed hopper 19. The needle-shaped fertilizer can enter the separation cylinder 10 through the feed inlet 16. The separation cylinder 10 on both sides can be rotated by the control motor 20. The needle-shaped fertilizer inside the separation cylinder 10 can be moved and screened under the action of the spiral blade 11, which can screen out the broken powder inside the needle-shaped fertilizer. The broken powder can be collected and reused through the collection hopper 2 18.
[0031] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.
Claims
1. An extrusion granulation apparatus for producing needle-like fertilizer, comprising a base (1), characterized in that: The inside of the base (1) is provided with an extrusion assembly (2), the outside of the base (1) is provided with a processing cylinder (3), the inside of the processing cylinder (3) is detachably connected with a screen cylinder (4), the outer surface of the processing cylinder (3) is fixedly installed with a collecting hopper (5), the inside of the collecting hopper (5) is fixedly installed with a fixed ring (6) and a supporting ring (7) respectively, the inside of the fixed ring (6) and the supporting ring (7) is rotatably connected with a fixed shaft (8), the outer surface of the fixed shaft (8) is fixedly installed with a fixed frame (9), the outer surface of the fixed frame (9) is fixedly installed with a separation cylinder (10), the inside of the separation cylinder (10) is provided with a spiral blade (11).
2. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized by: The inside of the collecting hopper (5) is provided with a fixed groove (12), the inside of the fixed groove (12) is slidably connected with a shunt plate (13), the tip of the shunt plate (13) is located at the middle position of the collecting hopper (5).
3. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized in that: The inner wall of the collecting hopper (5) is fixedly installed with a plurality of baffle plates (14), a plurality of baffle plates (14) are symmetrically arranged in the collecting hopper (5), and one end of the baffle plate (14) is located at the inlet position of the separation cylinder (10).
4. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized by: The inside of the collecting hopper (5) is fixedly installed with a sealing plate (15), the outer surface of the sealing plate (15) is in contact with one end of the separation cylinder (10), and the sealing plate (15) is provided with a feeding port (16) at the contact position of the baffle plate (14).
5. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized in that: The outer surface of the collecting hopper (5) is detachably installed with a fixed plate (17), one end of the fixed plate (17) is fixedly installed with a collecting hopper (18), and the collecting hopper (18) has a slope and gradually decreases to the outside of the collecting hopper (5).
6. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized by: One end of the processing cylinder (3) is fixedly installed with a feeding hopper (19), the outside of the fixed ring (6) is provided with a control motor (20), and the output end of the control motor (20) is fixedly installed with the outer surface of the fixed shaft (8).
7. The extrusion granulation apparatus for producing needle-shaped fertilizer according to claim 1, characterized by: The fixed shaft (8) is symmetrically arranged in the collecting hopper (5), and the separation cylinder (10) is symmetrically arranged in the collecting hopper (5) and the discharge ports are close to each other.