A continuous extrusion device for starch

Abstract

The utility model relates to starch extrusion equipment technical field discloses a kind of continuity extrusion devices for starch.The utility model includes ballast, and the front end of ballast is equipped with feed inlet and sealed communication feed part, rear end is cylindrical;Feed part contains storage cylinder, and the outer periphery of storage cylinder is equipped with cylinder, and cylinder output end is connected with push rod and compression plate to realize preliminary extrusion of starch;Front end is equipped with push-in device, and the spiral portion of its output end extends horizontally in ballast;Rear end is equipped with sealing part, and sealing part contains connecting support, combination block and round table shape sealing plate, screw sleeve is equipped with movable counterweight on combination block, and the device is classified extrusion by storage cylinder and ballast, and sealing plate disperses pressure and prevents caking, and counterweight adjusts pressure and adapts different starch, guarantee continuous stable operation, improve starch extrusion quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of starch extrusion equipment, and in particular to a continuous extrusion device for starch. Background Technology

[0002] In the food industry, starch, as an important basic raw material, is widely used in food processing, condiment production, and convenience food preparation. To meet the space optimization requirements of subsequent packaging and transportation processes, and to ensure the uniformity of subsequent processing steps such as dissolving, cooking, and molding, starch is usually extruded to reduce the gaps between starch granules and increase its bulk density. At the same time, it is crucial to strictly avoid starch granulation due to excessive local pressure during extrusion to ensure the starch's processing suitability.

[0003] Chinese patent CN 223211881U discloses a continuous extrusion device for starch. This device uses two sets of screws within the main body to extrude and transport starch, while simultaneously using a motor, bevel gears, and other transmission structures to drive the feed shaft and spiral blades to rotate. This solves the problems of low efficiency and easy clogging of traditional intermittent devices, but still has significant shortcomings: First, there is no graded extrusion design, relying solely on the screws to extrude loose starch in a single pass, which easily leads to uneven pressure distribution. This makes it difficult to achieve the ideal bulk density and may also cause starch agglomeration due to local pressure concentration at the screw meshing points. Second, the pressure adjustment flexibility is poor, as the pressure is controlled indirectly only by the screw speed, which cannot adapt to the needs of starches with different moisture content and particle sizes, easily resulting in wet starch adhesion or insufficient extrusion of coarse starch particles. Third, there is no raw material pretreatment stage; the feed hopper only temporarily stores and transports starch, and loose raw materials directly enter the extrusion zone, which easily leads to fluctuations in pushing resistance, affecting the stability of continuous operation and aggravating component wear.

[0004] Therefore, there is an urgent need to design a continuous extrusion device that can optimize the starch extrusion process through graded extrusion, flexibly adapt to different starch characteristics, and ensure the quality of extruded starch, so as to solve the technical bottlenecks of low starch extrusion efficiency, unstable product quality and narrow applicability in the existing technology. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a continuous extrusion device for starch.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A continuous extrusion device for starch includes a pressure chamber, which is a hollow structure and includes a front end and a rear end. The front end and the rear end are coaxially and fixedly connected. A feed inlet is provided on the side wall of the front end, and a conveying part is sealed and connected to the feed inlet. The rear end is cylindrical, and its axis coincides with the axis of the front end. The material conveying section includes a storage cylinder, and several support rods are installed on the outer periphery of the storage cylinder. One end of each support rod is connected to the outer surface of the ballast chamber, and the other end is provided with an mounting plate. A cylinder is provided on the side of the mounting plate away from the storage cylinder. One end of the front end is provided with a push-in device, the output end of the push-in device is provided with a spiral part, and the end of the spiral part away from the push-in device extends horizontally along the interior of the ballast chamber. A sealing part is provided at one end of the rear end. The sealing part includes a connecting bracket. One end of the connecting bracket is provided on the outer wall of the ballast tank, and the other end is movably connected to a connecting block. A sealing plate is provided at one end of the connecting block. The sealing plate is constructed as a truncated cone with a smooth convex curved surface on its outer circumference along the radial direction of the ballast tank. The sealing plate matches the internal dimensions of the rear end. A screw is provided at the end of the connecting block away from the sealing plate. A counterweight is sleeved on the screw. The counterweight moves on the screw through a nut.

[0007] Preferably, the connecting bracket includes a first bracket, a second bracket, and a third bracket. The first bracket is connected to the outer wall of the ballast tank, and the second bracket is rotatably mounted on the other end. The third bracket is fixedly mounted on the end of the second bracket away from the first bracket, and the third bracket is connected to the connecting block at the end away from the second bracket.

[0008] Preferably, the third bracket has movable holes at both ends, the movable holes extend along the length of the third bracket, the third bracket is sleeved on the outside of the connecting block, and is detachably connected to the connecting block by bolts.

[0009] Preferably, the sealing plate has a substrate on the side near the connecting block, the substrate is cylindrical, and the outer diameter of the substrate is larger than the outer diameter of the rear end.

[0010] Preferably, the cylinder output end is provided with a push rod, the push rod movably passes through the mounting plate and extends downward, and a compression plate is provided at the end of the push rod away from the cylinder, the size of the compression plate matching that of the storage cylinder.

[0011] Preferably, a valve is provided at the connection between the storage cylinder and the feed inlet.

[0012] Preferably, the pushing device is a rotary drive motor.

[0013] Preferably, the sealing plate has a contact surface at its end, and the contact surface is a plane.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves graded extrusion of starch through the coordinated design of a storage cylinder and a pressure chamber: the storage cylinder, as the primary extrusion unit, has a cylinder-driven push rod on its outer periphery that moves a compression plate along the inner wall of the storage cylinder, applying pre-pressure to the temporarily stored starch to complete the initial extrusion. This effectively reduces the initial gap between starch particles, increases the initial bulk density, and avoids pressure loss and uneven feeding caused by loose raw materials in subsequent extrusion. The pressure chamber, as the secondary extrusion unit, consists of a closed cavity formed by coaxially fixed front and rear ends. After the starch undergoes initial extrusion, it enters the front end stably through the feed inlet, and the spiral part of the pushing device extends horizontally along the inside of the pressure chamber, further compressing the starch. The starch is continuously and evenly pushed to the rear end, forming a deep extrusion space with a frustum-shaped sealing plate that matches the internal dimensions. The convex curved surface of the sealing plate can evenly distribute the pressure, while the counterweight can flexibly adjust the sealing pressure by moving along the screw with a nut, thus achieving deep compaction of the starch. This staged extrusion design not only lays a uniform raw material foundation for subsequent deep extrusion through initial extrusion, but also precisely controls the starch bulk density through deep extrusion. The entire process is continuous, effectively avoiding local over-pressure agglomeration of starch, ensuring the processing applicability of the extruded starch. At the same time, the structure is stable and adaptable to the extrusion requirements of different types of starch, which is conducive to large-scale production applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a continuous extrusion device for starch proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of a continuous extrusion device for starch according to the present invention. In the diagram: 1. Ballast chamber; 2. Front end; 3. Rear end; 4. Feed inlet; 5. Conveying section; 6. Storage cylinder; 7. Support rod; 8. Mounting plate; 9. Cylinder; 10. Pushing device; 11. Spiral section; 12. Sealing section; 13. Connecting bracket; 14. First bracket; 15. Second bracket; 16. Third bracket; 17. Connecting block; 18. Sealing plate; 19. Screw; 20. Counterweight; 21. Nut; 22. Movable hole; 23. Base plate; 24. Push rod; 25. Compression plate; 26. Valve; 27. Contact surface. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figures 1-2A continuous extrusion device for starch includes a pressure chamber 1, which is a hollow structure and includes a front end 2 and a rear end 3. The front end 2 and the rear end 3 are coaxially and fixedly connected. A feed inlet 4 is provided on the side wall of the front end 2, and a conveying section 5 is sealed and connected to the feed inlet 4. The rear end 3 is cylindrical, and its axis coincides with the center line of the front end 2. The conveying section 5 includes a storage cylinder 6. A support rod 7 is provided on the outer surface of the pressure chamber 1. The support rod 7 is distributed around the outer periphery of the storage cylinder 6. An mounting plate 8 is provided at the other end of the support rod 7. A cylinder 9 is provided on the side of the mounting plate 8 away from the storage cylinder 6. A pushing device 10 is provided at one end of the front end 2. A spiral part 11 is provided at the output end of the pushing device 10. The end of the spiral part 11 away from the pushing device 10 extends horizontally along the interior of the pressure chamber 1. A sealing part 12 is provided at one end of the end 3. The sealing part 12 includes a connecting bracket 13. The connecting bracket 13 includes a first bracket 14. One end of the first bracket 14 is provided on the outer wall of the ballast 1, and a second bracket 15 is rotatably provided at the other end. A third bracket 16 is fixedly provided at the end of the second bracket 15 away from the first bracket 14. A connecting block 17 is movably provided at the end of the third bracket 16 away from the second bracket 15. A sealing plate 18 is provided at one end of the connecting block 17. The sealing plate 18 is constructed as a truncated cone with a smooth convex curved surface on its outer circumference along the radial direction of the ballast 1. The sealing plate 18 matches the internal dimensions of the rear end 3. A screw 19 is provided at the end of the connecting block 17 away from the sealing plate 18. A counterweight 20 is sleeved on the screw 19. The counterweight 20 is moved on the screw 19 by a nut 21.

[0018] In the example of this application, the coordinated design of the storage cylinder 6 and the pressure chamber 1 enables graded extrusion of starch: the storage cylinder 6 serves as the primary extrusion unit, with its peripheral cylinder 9 driving the push rod 24 to move the compression plate 25 along the inner wall of the storage cylinder 6, applying pre-pressure to the temporarily stored starch to complete the initial extrusion, effectively reducing the initial gap between starch particles, increasing the initial bulk density, and avoiding pressure loss and uneven feeding caused by loose raw materials in subsequent extrusion; the pressure chamber 1 serves as the secondary extrusion unit, consisting of a coaxially fixed front end 2 and a rear end 3 forming a closed cavity. After the starch undergoes initial extrusion, it stably enters the front end 2 through the feed inlet 4, and the spiral part 11 of the pushing device 10 moves horizontally along the inside of the pressure chamber 1. The process extends the starch continuously and evenly towards the rear end 3, forming a deep extrusion space with the frustum-shaped sealing plate 18 that matches the internal dimensions of the rear end 3. The convex curved surface structure of the sealing plate 18 can evenly distribute the pressure, while the counterweight 20 can flexibly adjust the sealing pressure by moving along the screw 19 via the nut 21, thus achieving deep compaction of the starch. This staged extrusion design not only lays a uniform raw material foundation for subsequent deep extrusion through preliminary extrusion, but also precisely controls the starch bulk density through deep extrusion. Moreover, the entire process is continuous, effectively avoiding local over-pressure agglomeration of starch, ensuring the processing applicability of the extruded starch. At the same time, the structure is stable and adaptable to the extrusion requirements of different types of starch, which is conducive to large-scale production applications.

[0019] In the example of this application, the third bracket 16 has movable holes 22 at both ends, the movable holes 22 extend along the length of the third bracket 16, the third bracket 16 is sleeved on the outside of the connecting block 17, and is detachably connected to the connecting block 17 by bolts.

[0020] As a preferred example of this utility model, the movable holes 22 at both ends of the third bracket 16 extend along its length direction, and the third bracket 16 is detachably connected to the connecting block 17 by bolts. This design facilitates the assembly and disassembly of the connecting block 17.

[0021] In the example of this application, the sealing plate 18 is provided with a substrate 23 on the side near the connecting block 17. The substrate 23 is cylindrical and the outer diameter of the substrate 23 is larger than the outer diameter of the rear end 3.

[0022] As a preferred example of this utility model, the cylindrical substrate 23 on the side of the sealing plate 18 near the connecting block 17 has an outer diameter larger than that of the rear end 3, which can provide axial positioning and support for the sealing plate 18. This can prevent the sealing plate 18 from extending excessively into the rear end 3 under the extrusion pressure, which could lead to structural deformation or sealing failure. At the same time, through the limiting fit between the substrate 23 and the end face of the rear end 3, the insertion depth of the sealing plate 18 can be precisely controlled, balancing the sealing reliability and the size of the extrusion space, and ensuring the stability of the deep extrusion process.

[0023] In the example of this application, a push rod 24 is provided at the output end of the cylinder 9. The push rod 24 moves through the mounting plate 8 and extends downward. A compression plate 25 is provided at the end of the push rod 24 away from the cylinder 9. The size of the compression plate 25 matches that of the storage cylinder 6.

[0024] As a preferred example of this utility model, the push rod 24 at the output end of the cylinder 9 moves through the mounting plate 8, and the size of the compression plate 25 at the end matches that of the storage cylinder 6. This structure enables the cylinder 9 to drive the compression plate 25 to move smoothly along the inner wall of the storage cylinder 6. It can apply uniform and stable pre-pressure to the starch temporarily stored in the storage cylinder 6, effectively eliminate the loose gaps between starch particles, significantly improve the initial bulk density of starch, provide a basis for the uniformity of raw materials for the subsequent deep extrusion in the ballast chamber 1, and reduce pressure fluctuations during the subsequent extrusion process.

[0025] In the example of this application, a valve 26 is provided at the connection between the storage cylinder 6 and the feed inlet 4.

[0026] As a preferred example of this utility model, the valve 26 at the connection between the storage cylinder 6 and the feed port 4 can precisely control the feeding on / off of the storage cylinder 6 to the pressure chamber 1 and the feeding rate; it can prevent starch that has not been pre-compressed in the storage cylinder 6 from entering the pressure chamber 1 too early and affecting the extrusion effect, while making the feeding rhythm coordinated with the secondary extrusion rhythm of the pressure chamber 1, preventing starch accumulation or material interruption in the pressure chamber 1, and further ensuring the continuity and stability of the graded extrusion process.

[0027] In the example of this application, the pushing device 10 is a rotary drive motor.

[0028] As a preferred example of this utility model, the pushing device 10 adopts a rotary drive motor, which can provide continuous and stable rotational power to the spiral part 11; it can ensure that the spiral part 11 rotates at a uniform speed in the horizontal direction inside the pressure chamber 1, realize the continuous and uniform pushing of starch, avoid local accumulation of starch or interruption of pushing during the pushing process, ensure the continuous operation of the secondary deep extrusion in the pressure chamber 1, and at the same time improve the uniformity of starch distribution in the pressure chamber 1 and reduce local overpressure.

[0029] In the example of this application, the end of the sealing plate 18 is provided with a contact surface 27, which is a plane.

[0030] As a preferred example of this utility model, the flat contact surface 27 at the top of the sealing plate 18 ensures that the extrusion pressure is evenly transmitted in the starch contact area, avoiding local pressure concentration caused by the irregularity of the contact surface 27, effectively preventing starch from clumping due to local overpressure, further ensuring the looseness and processing applicability of the extruded starch, and improving the quality stability of the final extruded product.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A continuous extrusion apparatus for starch, characterized in that: The ballast includes a ballast chamber (1), which is a hollow structure. The ballast chamber (1) includes a front end (2) and a rear end (3). The front end (2) and the rear end (3) are coaxially and fixedly connected. A feed inlet (4) is provided on the side wall of the front end (2). A conveying part (5) is provided at the feed inlet (4) in a sealed connection. The rear end (3) is cylindrical, and its axis coincides with the center line of the front end (2). The conveying part (5) includes a storage cylinder (6). A support rod (7) is provided on the outer surface of the ballast chamber (1). The support rod (7) is distributed around the outer periphery of the storage cylinder (6). The other end of the support rod (7) is provided with a mounting plate (8). The mounting plate (8) is provided with a cylinder (9) on the side away from the storage cylinder (6). One end of the front end (2) is provided with a pushing device (10). The output end of the pushing device (10) is provided with a spiral part (11). The end of the spiral part (11) away from the pushing device (10) extends horizontally along the inside of the ballast chamber (1). One end of the rear end (3) is provided with a sealing part (12). The sealing part (12) includes a connecting bracket (13), the connecting bracket (13) includes a first bracket (14), one end of the first bracket (14) is disposed on the outer wall of the ballast chamber (1), and the other end is rotatably disposed on a second bracket (15). The second bracket (15) is fixedly disposed on a third bracket (16) at the end away from the first bracket (14). The third bracket (16) is movably disposed on a connecting block (17) at the end away from the second bracket (15). The connecting block (17) is disposed on a sealing plate (18) at one end, and the sealing plate (18) matches the internal size of the rear end (3). The connecting block (17) is disposed on a screw (19) at the end away from the sealing plate (18). A counterweight (20) is sleeved on the screw (19), and the counterweight (20) is moved on the screw (19) by means of a nut (21).

2. The continuous extrusion apparatus for starch according to claim 1, characterized in that, The sealing plate (18) is constructed as a truncated cone with a smooth, convex curved surface on its outer periphery that curves outward along the radial direction of the ballast (1).

3. The continuous extrusion apparatus for starch according to claim 1, characterized in that, The third bracket (16) has movable holes (22) at both ends. The movable holes (22) extend along the length of the third bracket (16). The third bracket (16) is sleeved on the outside of the connecting block (17) and is detachably connected to the connecting block (17) by bolts.

4. The continuous extrusion apparatus for starch according to claim 1, characterized in that, The sealing plate (18) has a substrate (23) on one side near the connecting block (17). The substrate (23) is cylindrical and its outer diameter is larger than that of the rear end (3).

5. A continuous extrusion apparatus for starch according to claim 1, characterized in that, The cylinder (9) is provided with a push rod (24) at its output end. The push rod (24) moves through the mounting plate (8) and extends downward. A compression plate (25) is provided at the end of the push rod (24) away from the cylinder (9). The size of the compression plate (25) matches that of the storage cylinder (6).

6. The continuous extrusion apparatus for starch according to claim 1, characterized in that, A valve (26) is provided at the connection between the storage cylinder (6) and the feed inlet (4).

7. A continuous extrusion apparatus for starch according to claim 1, characterized in that, The pushing device (10) is a rotary drive motor.

8. A continuous extrusion apparatus for starch according to claim 1, characterized in that, The sealing plate (18) has a contact surface (27) at its end, and the contact surface (27) is a plane.

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