A vertical granulator high-efficiency forming and extruding device

Abstract

The utility model belongs to vertical granulator field, concretely relates to a vertical granulator high -efficient forming extrusion device, has solved the vertical granulator of existing in the material forming extrusion, it is difficult to compress processing before the material enters the extrusion area, leading to the existence of a large number of gap air between material particles, these air is difficult to discharge quickly in high -pressure extrusion process, will form pore or crack in the particle interior, influence particle quality, on the other hand, material is extruded and is formed and is discharged, and the phenomenon of easy sliding is reduced extrusion efficiency's problem, including guide tube, the upper surface of guide tube is fixed and is communicated with extrusion box, the inside of extrusion box is equipped with two extrusion rollers. Through the setting of extrusion roller in the extrusion box, the injected material can be preliminarily compressed under the driving of motor, effectively reduce the gap air between material particles, avoid the problem that the traditional equipment leads to the pore, crack of particle due to air residue.

Description

Technical Field

[0001] This utility model relates to the field of vertical pellet mill technology, specifically to a high-efficiency forming and extrusion device for a vertical pellet mill. Background Technology

[0002] Vertical pellet mills are pellet forming equipment widely used in feed processing, biomass energy, pharmaceutical and chemical industries. After the material enters from the top of the equipment, it is compressed into pellets with a certain density and shape under the action of gravity and extrusion.

[0003] However, existing vertical pellet mills have difficulty compressing materials before they enter the extrusion zone during the forming and extrusion process. This results in a large amount of interstitial air between the material particles. This air is difficult to expel quickly during the high-pressure extrusion process and will form pores or cracks inside the particles, affecting the particle quality. On the other hand, the material is prone to slippage during the extrusion forming and discharge process, which reduces the extrusion efficiency. To address these issues, we propose a high-efficiency forming and extrusion device for vertical pellet mills. Utility Model Content

[0004] The technical problem solved by this utility model is that existing vertical pellet mills have difficulty compressing materials before they enter the extrusion zone, resulting in a large amount of air gaps between the material particles. This air is difficult to expel quickly during high-pressure extrusion and will form pores or cracks inside the particles, affecting the quality of the particles. On the other hand, the material is prone to slippage when it is extruded and discharged, which reduces the extrusion efficiency. This utility model provides a high-efficiency forming and extrusion device for vertical pellet mills.

[0005] To solve the above-mentioned technical problems, this utility model provides a high-efficiency forming and extrusion device for a vertical pellet mill, including a guide cylinder, an extrusion box fixedly connected to the upper surface of the guide cylinder, two extrusion rollers inside the extrusion box, a drive cover inside the guide cylinder, a first variable frequency motor fixedly installed on the inner top wall of the drive cover, an extrusion screw fixedly installed at the output end of the first variable frequency motor, an extrusion cylinder fixedly connected to the bottom surface of the guide cylinder, a forming pellet cover threadedly connected to the outer surface of the bottom end of the extrusion cylinder, and two drive motors fixedly installed on the outer surface of the extrusion box, with the output ends of the two drive motors respectively fixedly installed to one end of the two extrusion rollers.

[0006] Preferably, a second variable frequency motor is fixedly installed on the bottom surface of the molded particle cover, a connecting plate is fixedly installed on the output end of the second variable frequency motor, and two cutting scrapers are fixedly connected to the outer surface of the connecting plate.

[0007] Preferably, the inner ring of the guide cylinder is fixedly connected with a plurality of fixing rods, and the end of each fixing rod that is close to each other is fixedly connected to the outer surface of the drive cover.

[0008] Preferably, a reinforcing plate is fixedly connected to the bottom end of the drive cover, and a first bearing is fixedly embedded in the bottom surface of the reinforcing plate. The inner ring of the first bearing is fixedly connected to the outer surface of the top end of the extrusion screw. Two sets of second bearings are fixedly embedded in the inner wall of the extrusion box, and the inner rings of the two sets of second bearings are respectively fixedly connected to the outer surfaces of the two ends of the two extrusion rollers.

[0009] Preferably, a plurality of stirring scrapers are fixedly connected to the outer surface of the extrusion screw, and the stirring scrapers are located below the fixed rod.

[0010] Preferably, the upper surface of the extrusion box is fixedly connected to an injection hood, and the bottom surface of the guide cylinder is fixedly connected to multiple support bases.

[0011] Compared with related technologies, this utility model has the following beneficial effects: This invention, through the setting of extrusion rollers inside the extrusion box, can initially compress the injected material under the drive of the motor, effectively reducing the gap air between material particles and avoiding the problems of air holes and cracks in particles caused by residual air in traditional equipment, thereby improving particle density. In addition, after the pre-compressed pre-tightened material falls into the guide cylinder, the first variable frequency motor drives the extrusion screw to rotate inside the extrusion cylinder, which can extrude the material downward to form it, and the material will be discharged and cut through the forming particle cover to ensure uniform particle size, thereby improving the forming and extrusion quality and extrusion speed of the material particles.

[0012] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the front of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a bottom sectional view of the present invention; Figure 4 This is a bottom-view cross-sectional view of the extrusion box in this utility model.

[0015] Numbering on the map: 1. Feed guide cylinder; 2. Extrusion box; 3. Extrusion roller; 4. Drive cover; 5. First variable frequency motor; 6. Extrusion screw; 7. Forming pellet cover; 8. Second variable frequency motor; 9. Connecting plate; 10. Cutting scraper; 11. Mixing scraper; 12. Fixing rod; 13. Reinforcing plate; 14. First bearing; 15. Extrusion cylinder; 16. Second bearing; 17. Drive motor; 18. Injection cover; 19. Support base. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 A high-efficiency forming and extrusion device for a vertical pellet mill includes a guide cylinder 1, an extrusion box 2 fixedly connected to the upper surface of the guide cylinder 1, two extrusion rollers 3 inside the extrusion box 2, a drive cover 4 inside the guide cylinder 1, a first variable frequency motor 5 fixedly installed on the inner top wall of the drive cover 4, an extrusion screw 6 fixedly installed at the output end of the first variable frequency motor 5, an extrusion cylinder 15 fixedly connected to the bottom surface of the guide cylinder 1, a forming pellet cover 7 threadedly connected to the outer surface of the bottom end of the extrusion cylinder 15, and two drive motors 17 fixedly installed on the outer surface of the extrusion box 2. The output ends of the two drive motors 17 are respectively fixedly installed to one end of the two extrusion rollers 3. Through the setting of the extrusion rollers 3 inside the extrusion box 2, the injected material can be initially compressed under the drive of the drive motors 17, effectively reducing the gap air between the material particles. By driving the extrusion screw 6 to rotate inside the extrusion cylinder 15 through the first variable frequency motor 5, the material can be extruded downwards and formed, and the material will be discharged and cut through the forming pellet cover 7.

[0018] Multiple fixing rods 12 are fixedly connected to the inner ring of the guide cylinder 1. The end of each fixing rod 12 that is close to each other is fixedly connected to the outer surface of the drive cover 4. A reinforcing plate 13 is fixedly connected to the bottom end of the drive cover 4. A first bearing 14 is fixedly embedded in the bottom surface of the reinforcing plate 13. The inner ring of the first bearing 14 is fixedly connected to the outer surface of the top end of the extrusion screw 6. Two sets of second bearings 16 are fixedly embedded in the inner wall of the extrusion box 2. The inner rings of the two sets of second bearings 16 are fixedly connected to the outer surfaces of the two ends of the two extrusion rollers 3 respectively. The fixing rods 12 can stably support the drive cover 4 and prevent it from shaking when the first variable frequency motor 5 is running, thus ensuring the stable operation of the extrusion screw 6. The reinforcing plate 13 and the first bearing 14 reduce the friction when the extrusion screw 6 rotates and improve the smoothness of rotation. The two sets of second bearings 16 can reduce the rotation resistance of the extrusion rollers 3 and ensure that they can smoothly carry out the initial compression operation under the drive motor 17.

[0019] A second variable frequency motor 8 is fixedly installed on the bottom surface of the forming granule cover 7. A connecting plate 9 is fixedly installed on the output end of the second variable frequency motor 8. Two cutting scrapers 10 are fixedly connected to the outer surface of the connecting plate 9. Multiple stirring scrapers 11 are fixedly connected to the outer surface of the extrusion screw 6, and the stirring scrapers 11 are located below the fixed rod 12. A material injection cover 18 is fixedly connected to the upper surface of the extrusion box 2. Multiple support bases 19 are fixedly connected to the bottom surface of the guide cylinder 1. The second variable frequency motor 8 can drive the connecting plate 9 and the two cutting scrapers 10 to rotate, so as to achieve precise cutting of the initial granules and ensure uniform granule length. The multiple stirring scrapers 11 can stir the material in the guide cylinder 1 to avoid material accumulation and blockage, and at the same time assist in pushing the material to move towards the extrusion cylinder 15. The material injection cover 18 facilitates the smooth entry of the material into the extrusion box 2. The multiple support bases 19 play a role in stabilizing and supporting the entire device.

[0020] The specific implementation process of this utility model is as follows: In use, after the material enters the extrusion box 2 through the injection hood 18, the two drive motors 17 synchronously drive the extrusion rollers 3 to rotate relative to each other. The material is initially compressed by the friction of the roller surface, squeezing out some gap air and forming a pre-tightened material clump. The pre-compressed material falls into the guide cylinder 1. Then, the first variable frequency motor 5 drives the extrusion screw 6 to rotate at high speed. The cooperation between the extrusion screw 6 and the inner wall of the extrusion cylinder 15 forms a secondary compression, further eliminating air and pushing the material to move towards the extrusion cylinder 15. In the discharge forming stage, the extrusion cylinder 15 presses the material into the forming particle cover 7, forming preliminary particles through the preset die hole. Then, the second variable frequency motor 8 drives the connecting plate 9 to drive the cutting scraper 10 to rotate and cut the particles according to the set length.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency forming and extrusion device for a vertical pellet mill, comprising a guide cylinder (1), characterized in that: The upper surface of the guide cylinder (1) is fixedly connected to the extrusion box (2). The extrusion box (2) is equipped with two extrusion rollers (3). The guide cylinder (1) is equipped with a drive cover (4). The inner top wall of the drive cover (4) is fixedly installed with a first variable frequency motor (5). The output end of the first variable frequency motor (5) is fixedly installed with an extrusion screw (6). The bottom surface of the guide cylinder (1) is fixedly connected to the extrusion cylinder (15). The outer surface of the bottom end of the extrusion cylinder (15) is threadedly connected with a forming particle cover (7). The outer surface of the extrusion box (2) is fixedly installed with two drive motors (17). The output ends of the two drive motors (17) are respectively fixedly installed with one end of the two extrusion rollers (3).

2. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: The bottom surface of the molded particle cover (7) is fixedly installed with a second variable frequency motor (8), and the output end of the second variable frequency motor (8) is fixedly installed with a connecting plate (9). Two cutting scrapers (10) are fixedly connected to the outer surface of the connecting plate (9).

3. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: The inner ring of the guide cylinder (1) is fixedly connected with a plurality of fixing rods (12), and the end of each fixing rod (12) that is close to each other is fixedly connected to the outer surface of the drive cover (4).

4. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: The bottom end of the drive cover (4) is fixedly connected to a reinforcing plate (13), and the bottom surface of the reinforcing plate (13) is fixedly inlaid with a first bearing (14). The inner ring of the first bearing (14) is fixedly connected to the outer surface of the top end of the extrusion screw (6).

5. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: Multiple stirring scrapers (11) are fixedly connected to the outer surface of the extrusion screw (6), and the stirring scrapers (11) are located below the fixed rod (12).

6. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: The inner wall of the extrusion box (2) is fixedly inlaid with two sets of second bearings (16), and the inner rings of the two sets of second bearings (16) are fixedly connected to the outer surfaces of the two ends of the extrusion rollers (3).

7. The high-efficiency forming and extrusion device for a vertical pellet mill according to claim 1, characterized in that: The upper surface of the extrusion box (2) is fixedly connected to the injection hood (18), and the bottom surface of the guide cylinder (1) is fixedly connected to multiple support bases (19).

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