Double-screw extrusion device based on feed additive particle forming

Abstract

The utility model relates to the technical field of feed additive processing, and discloses a feed additive particle forming-based double-helix extrusion device which comprises a bearing plate, a conveying cylinder is fixedly connected to the top of the bearing plate, a first motor is fixedly connected to the left side of the top of the bearing plate, and a screw rod is fixedly connected to the driving end of the first motor; a protective cylinder is fixedly connected to the side, away from the first motor, of the conveying cylinder, a pressing ring is fixedly connected to the end, away from the first motor, of the screw rod, a plurality of discharging holes are formed in the pressing ring, a pressing roller is fixedly connected to the interior of the protective cylinder, and a discharging assembly is arranged outside the conveying cylinder. According to the utility model, materials are extruded from the discharge hole under the extrusion of the compression roller, and meanwhile, the cutting plate cuts off the materials, so that the adhesion phenomenon is avoided, the processing quality is ensured, the position of the bearing plate can be changed by utilizing the wheels, and different processing requirements can be flexibly met.

Description

Technical Field

[0001] The utility model relates to the technical field of feed additive processing, in particular to a double-screw extrusion device based on feed additive particle molding. Background Art

[0002] Feed additives are a general term for substances added to feed in small doses for a specific purpose. They are essential raw materials used in the modern feed industry. Their main functions include improving the nutritional value of feed and promoting digestion and absorption of nutrients; improving feed taste and palatability, promoting animal growth and development; improving feed quality and preventing and treating animal diseases; and improving feed physical properties and processing performance, reducing nutrient loss. The two screws of a twin-screw extruder rotate, subjecting the material to intense shearing and stirring within the barrel, achieving a better mixing effect. For feed extrusion molding, it is necessary to thoroughly mix various raw materials and additives to ensure feed quality and nutritional consistency. Twin-screw extruders precisely meet this requirement.

[0003] During processing, the twin-screw extruder feeds the material into the barrel through the feed port. The material is then conveyed to the front end of the barrel along the axial direction of the screw under the action of the screw's rotation. During the conveying process, as the screw pitch gradually decreases and the barrel's inner diameter gradually shrinks, the material is subjected to increasing pressure, compressed, and formed into a dense stream. After being conveyed, compressed, sheared, mixed, and heated and matured, the material is finally extruded from the die hole of the die head under the push of the screw to form pellets of the desired shape and size.

[0004] In the prior art, some extrusion devices have material accumulation inside the die hole of the head after continuous use, resulting in the subsequent extruded material being discontinuous and the extruded materials sticking to each other, affecting the processing quality. Therefore, a double-screw extrusion device based on feed additive granule molding is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a twin-screw extrusion device based on feed additive granule molding, which aims to improve the problem in the prior art that material will accumulate inside the die hole after continuous use, resulting in the subsequent extruded material not being continuous, the extruded materials sticking to each other, and affecting the processing quality.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A twin-screw extrusion device based on the formation of feed additive particles comprises a carrying plate, the top of the carrying plate is fixedly connected to a conveying cylinder, the top left side of the carrying plate is fixedly connected to a motor 1, the driving end of the motor 1 is fixedly connected to a screw, the side of the conveying cylinder away from the motor 1 is fixedly connected to a protective cylinder, the end of the screw away from the motor 1 is fixedly connected to a pressure ring, a plurality of discharge holes are opened inside the pressure ring, a pressure roller is fixedly connected inside the protective cylinder, a blanking assembly is provided on the outside of the conveying cylinder, the blanking assembly can prevent material from sticking, and an adjustment assembly is provided at the bottom of the carrying plate, and the adjustment assembly can flexibly adjust the position of the carrying plate;

[0008] As a further description of the above technical solution:

[0009] The blanking assembly includes a cutting plate, the outer portion of which is fixedly connected to a side of the conveying cylinder close to the protective cylinder, a discharge port is provided inside the protective cylinder, and a receiving box is fixedly connected to a side of the carrying plate close to the protective cylinder;

[0010] As a further description of the above technical solution:

[0011] The outer portion of the cutting plate contacts the outer portion of the pressure ring, and the outer portion of the cutting plate contacts the inner wall of the discharge port;

[0012] As a further description of the above technical solution:

[0013] The top of the conveying cylinder is fixedly connected to a discharge cylinder, the top of the discharge cylinder is fixedly connected to a second motor, the driving end of the second motor is fixedly connected to a stirring rod, the bottom of the stirring rod is fixedly connected to a plurality of blades, and the top of the discharge cylinder is fixedly connected to a feed port;

[0014] As a further description of the above technical solution:

[0015] The adjustment assembly includes a plurality of support legs, the tops of the plurality of support legs are respectively fixedly connected to the four corners of the bottom end of the supporting plate, wherein the outer portions of two of the support legs are rotatably connected to a rotating frame 1, wherein the other two support legs are rotatably connected to a rotating frame 2 on a side close to the rotating frame 1, and the outer portions of the rotating frame 1 and the outer portions of the rotating frame 2 are both rotatably connected to two wheels;

[0016] As a further description of the above technical solution:

[0017] The front and rear sides of the rotating frame 1 are both fixedly connected to springs, the other end of the spring is fixedly connected to a clamping plate, and the adjacent sides of the two clamping plates are fixedly connected to a limiting column;

[0018] As a further description of the above technical solution:

[0019] The front and rear sides of the outer portion of the second rotating frame are fixedly connected with clamping columns, and the outer portion of the clamping plate contacts the outer portion of the clamping columns;

[0020] As a further description of the above technical solution:

[0021] The outside of the rotating frame 1 contacts the outside of the rotating frame 2, and the middle part of the clamping plate is rotatably connected to the outside of the rotating frame 1.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by starting motor 1, the screw conveys the material under the drive of motor 1, and then enters the interior of the protective cylinder. As the protective cylinder rotates, the material enters between the pressure roller and the pressure ring. Under the pressure of the pressure roller, the material is squeezed out from the discharge hole. At the same time, the cutting plate cuts the material to avoid adhesion and ensure processing quality.

[0024] 2. In the present invention, by pressing the rotating frame 1 downward, the rotating frame 2 will also rotate downward under the pressing of the rotating frame 1. At this time, the wheels are in contact with the ground, and then the clamping plate is rotated to compress the spring. Then the clamping plate is released to engage with the clamping column, which can fix the rotating frame 1 and the rotating frame 2. The wheels can be used to change the position of the load-bearing plate, which can flexibly adapt to different processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a double-screw extrusion device for forming feed additive particles proposed in the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the lower barrel of the double-screw extrusion device based on feed additive granule molding proposed in the utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic structural diagram of the support legs of the double-screw extrusion device for forming feed additive particles proposed in the present invention.

[0029] Legend:

[0030] 1. Loading plate; 2. Conveying cylinder; 3. Motor 1; 4. Screw; 5. Protective cylinder; 6. Pressure ring; 7. Discharge hole; 8. Pressure roller; 9. Cutting plate; 10. Discharge port; 11. Receiving box; 12. Unloading cylinder; 13. Motor 2; 14. Stirring rod; 15. Blade; 16. Feed port; 17. Support leg; 18. Rotating frame 1; 19. Rotating frame 2; 20. Wheel; 21. Spring; 22. Clamping plate; 23. Limiting column; 24. Clamping column. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figures 1 to 3 The present invention provides an embodiment of a twin-screw extruder for forming feed additive granules, comprising a carrier plate 1, a conveying cylinder 2 fixedly connected to the top of the carrier plate 1, a motor 3 fixedly connected to the left side of the top of the carrier plate 1, and a screw 4 fixedly connected to the driving end of the motor 3. The motor 3 provides power for the rotation of the screw 4, which is driven by the motor 3 to convey the material. A protective cylinder 5 is fixedly connected to the side of the conveying cylinder 2 away from the motor 3, which serves as a passage for the material to enter the protective cylinder 5 from the discharge cylinder 12. This provides a closed environment for the material forming and extrusion process.

[0033] The end of the screw 4, away from the motor 3, is fixedly connected to a pressure ring 6. Multiple discharge holes 7 are formed within the pressure ring 6, which serve as outlets for the material to be extruded and formed into pellets. As the screw 4 rotates, the material is conveyed into the protective tube 5 and into the pressure ring 6. When the material enters the gap between the pressure ring 6 and the pressure roller 8, it is extruded through the discharge holes 7. A pressure roller 8 is fixedly connected to the interior of the protective tube 5, working in conjunction with the pressure ring 6. When the material enters the gap between the pressure ring 6 and the pressure roller 8, the pressure between them forces it out of the discharge holes 7, forming pellets.

[0034] A blanking assembly is provided on the outside of the conveying cylinder 2 to prevent material from sticking. The blanking assembly includes a cutting plate 9, the outside of which is fixedly connected to the side of the conveying cylinder 2 near the protective cylinder 5. The inside of the protective cylinder 5 is provided with a discharge port 10, which serves as a channel for material to be discharged from the protective cylinder 5. The outside of the cutting plate 9 contacts the outside of the pressure ring 6, and the outside of the cutting plate 9 contacts the inner wall of the discharge port 10. The outside of the cutting plate 9 contacts the outside of the pressure ring 6 and also contacts the inner wall of the discharge port 10. The main function of the cutting plate 9 is to cut the material after it is extruded from the discharge hole 7. It can accurately cut the material and cooperates well with the pressure ring 6 and the discharge port 10 to prevent material residue or blockage during the cutting process.

[0035] A receiving box 11 is fixedly connected to one side of the supporting plate 1 close to the protective cylinder 5, which is used to collect the formed particles falling from the discharge port 10. A discharge cylinder 12 is fixedly connected to the top of the conveying cylinder 2, which is the initial channel for the material to enter the device. It can ensure that the material can flow in smoothly and prevent the material from accumulating or clogging in the cylinder. A motor 2 13 is fixedly connected to the top of the discharge cylinder 12, and a stirring rod 14 is fixedly connected to the driving end of the motor 2 13, which is the power source for the rotation of the stirring rod 14. Driven by the motor 2 13, the stirring rod 14 stirs the material and can fully stir the material, making the material more uniform during the falling process and avoiding local accumulation or blockage.

[0036] The bottom of the stirring rod 14 is fixedly connected to a plurality of blades 15. The function of the blades 15 is to perform secondary stirring on the material. In particular, for some materials that are easy to stick or clump, the blades 15 can chop and break them up, further improving the fluidity of the material and preventing the material from clogging the discharge barrel 12 during the discharge process. A feed port 16 is fixedly connected to the top of the discharge barrel 12.

[0037] Reference Figure 4 An adjustment component is provided at the bottom of the supporting plate 1, which can flexibly adjust the position of the supporting plate 1. The adjustment component includes multiple support legs 17. The tops of the multiple support legs 17 are respectively fixedly connected to the four corners of the bottom end of the supporting plate 1. The support legs 17 are an important supporting part of the supporting plate 1, providing stable support for the entire device and ensuring the stability of the device during operation.

[0038] Two of the support legs 17 are rotatably connected to a rotating frame 18 on the outside. The design of the rotating frame 18 allows it to rotate around the connection point with the support legs 17 when subjected to external force. This rotation function plays a key role in the process of adjusting the position of the support plate 1. The other two support legs 17 are rotatably connected to a rotating frame 2 19 on the side close to the rotating frame 18. Like the rotating frame 1 18, it is the core part of the adjustment assembly. The outside of the rotating frame 1 18 and the outside of the rotating frame 2 19 are both rotatably connected to two wheels 20. The main function of the wheels 20 is to contact the ground when the support plate 1 needs to be moved, and to reduce friction by rolling, thereby facilitating the placement of the support plate 1 in a suitable position.

[0039] Springs 21 are fixedly connected to the front and rear ends of rotating frame 18. A retaining plate 22 is fixedly attached to the other end of spring 21. When retaining plate 22 is moved to one side, spring 21 is compressed, storing elastic potential energy. The exterior of rotating frame 18 contacts the exterior of rotating frame 2 (19). The middle portion of retaining plate 22 is pivotally connected to the exterior of rotating frame 18. The adjacent sides of the two retaining plates 22 are fixedly connected to limit posts 23. Retaining posts 24 are fixedly connected to the front and rear ends of rotating frame 2 (19). Retaining plates 22 are pivotally connected to the exterior of rotating frame 2 (19) and connected to springs 21 on rotating frame 18. This plays a key role in the adjustment process.

[0040] When it is necessary to secure rotating frame 18 and rotating frame 2, 19, the clamping plate 22 is moved to one side to compress the spring 21, and then the clamping plate 22 is released. Under the action of the spring 21, the clamping plate 22 engages with the clamping column 24, thereby securing rotating frame 18 and rotating frame 2, 19. The outer portion of the clamping plate 22 contacts the outer portion of the clamping column 24. When the clamping plate 22 is released, the spring 21 releases its elastic potential energy, pushing the clamping plate 22 back to its original position or engaging with the clamping column 24. The clamping column 24 is fixedly connected to the front and rear sides of the outer portion of rotating frame 2, and is used to engage with the clamping plate 22 to achieve stable fixation of rotating frame 18 and rotating frame 2, 19.

[0041] Working principle: First, press the rotating frame 18 downward, and the rotating frame 2 19 rotates downward under the pressure of the rotating frame 18. At this time, the wheel 20 contacts the ground, and then the card plate 22 is pushed to one side, so that the spring 21 is compressed, and the card plate 22 is released, so that the card plate 22 is engaged with the card column 24, which can fix the rotating frame 18 and the rotating frame 2 19. Use the wheel 20 to place the supporting plate 1 to the appropriate position, and then push the card plate 22 again to separate the card plate 22 from the card column 24, push the rotating frame 18 and the rotating frame 2 19 upward, so that the wheel 20 is separated from the ground, and the supporting plate 1 can be placed stably.

[0042] After that, the material is put into the inside of the discharge barrel 12 through the feed port 16, and then the motor 2 13 is started. Under the drive of the motor 2 13, the stirring rod 14 stirs the material, and at the same time, the blade 15 stirs the material for the second time to avoid blockage. After that, the material enters the inside of the conveying barrel 2, and then the motor 1 3 is started. Under the drive of the motor 1 3, the screw 4 conveys the material. As the screw 4 rotates, the material will enter the inside of the protective barrel 5, and at the same time, the pressure ring 6 will rotate with the rotation of the screw 4. After the material enters the inside of the protective barrel 5, it will continue to enter with the subsequent material, and thus squeeze into the inside of the pressure ring 6. When the material enters the gap between the pressure ring 6 and the pressure roller 8, the material will be squeezed out from the discharge hole 7, and then the cutting plate 9 will cut it off and fall from the discharge port 10 to the inside of the receiving box 11 for collection.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A twin-screw extrusion device for forming feed additive particles, comprising a carrier plate (1), characterized in that: The top of the supporting plate (1) is fixedly connected to a conveying cylinder (2), the left side of the top of the supporting plate (1) is fixedly connected to a motor 1 (3), the driving end of the motor 1 (3) is fixedly connected to a screw (4), the side of the conveying cylinder (2) away from the motor 1 (3) is fixedly connected to a protective cylinder (5), the end of the screw (4) away from the motor 1 (3) is fixedly connected to a pressure ring (6), the interior of the pressure ring (6) is provided with a plurality of discharge holes (7), the interior of the protective cylinder (5) is fixedly connected to a pressure roller (8), the outside of the conveying cylinder (2) is provided with a blanking component, the blanking component can prevent material from sticking, the bottom of the supporting plate (1) is provided with an adjustment component, the adjustment component can flexibly adjust the position of the supporting plate (1).

2. The twin-screw extruder for forming feed additive particles according to claim 1, characterized in that: The unloading assembly includes a cutting plate (9), the outside of which is fixedly connected to a side of the conveying cylinder (2) close to the protective cylinder (5), a discharge port (10) is provided inside the protective cylinder (5), and a receiving box (11) is fixedly connected to a side of the supporting plate (1) close to the protective cylinder (5).

3. The twin-screw extruder for forming feed additive particles according to claim 2, characterized in that: The outside of the cutting plate (9) contacts the outside of the pressure ring (6), and the outside of the cutting plate (9) contacts the inner wall of the discharge port (10).

4. The twin-screw extruder for forming feed additive particles according to claim 1, characterized in that: The top of the conveying cylinder (2) is fixedly connected to a discharge cylinder (12), the top of the discharge cylinder (12) is fixedly connected to a second motor (13), the driving end of the second motor (13) is fixedly connected to a stirring rod (14), the bottom of the stirring rod (14) is fixedly connected to a plurality of blades (15), and the top of the discharge cylinder (12) is fixedly connected to a feed port (16).

5. The twin-screw extruder for forming feed additive particles according to claim 1, characterized in that: The adjustment assembly includes a plurality of support legs (17), the tops of the plurality of support legs (17) are respectively fixedly connected to the four corners of the bottom end of the supporting plate (1), wherein the outsides of two of the support legs (17) are rotatably connected to a rotating frame 1 (18), and the other two of the support legs (17) are rotatably connected to a rotating frame 2 (19) on a side close to the rotating frame 1 (18), and the outsides of the rotating frame 1 (18) and the outsides of the rotating frame 2 (19) are both rotatably connected to two wheels (20).

6. The twin-screw extruder for forming feed additive particles according to claim 5, characterized in that: The front and rear sides of the rotating frame (18) are both fixedly connected with springs (21), the other end of the spring (21) is fixedly connected with a clamping plate (22), and the adjacent sides of the two clamping plates (22) are fixedly connected with a limiting column (23).

7. The twin-screw extruder for forming feed additive particles according to claim 6, characterized in that: The front and rear sides of the exterior of the second rotating frame (19) are both fixedly connected with clamping columns (24), and the exterior of the clamping plate (22) is in contact with the exterior of the clamping columns (24).

8. The twin-screw extruder for forming feed additive particles according to claim 7, characterized in that: The outside of the rotating frame 1 (18) is in contact with the outside of the rotating frame 2 (19), and the middle part of the clamping plate (22) is rotatably connected to the outside of the rotating frame 1 (18).

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