Premixing device for dry modified starch production
The premixing device, which combines rotary stirring and vertical tumbling, solves the problem of uneven mixing in the dry modified starch production process, achieving efficient and uniform mixing of materials and improving product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI PINGXIANG GUIJIN TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-28
AI Technical Summary
In the production of dry modified starch, the lack of rapid premixing in existing technologies leads to uneven mixing of starch and raw materials, which easily causes clumping and affects product quality.
A premixing device employing the combined action of rotary stirring and vertical tumbling achieves uniform mixing of materials through spiral conveying, screening to remove impurities, and the combined action of mixing plate and vertical tumbling plate.
It significantly improves the uniformity of material mixing, ensures the uniformity and efficiency of subsequent mixing processes, provides a uniform and clean material base, and improves product quality.
Smart Images
Figure CN224167408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of starch production and processing technology, and in particular to a premixing device for dry modified starch production. Background Technology
[0002] Starch is a high-molecular-weight carbohydrate, a polysaccharide polymerized from glucose molecules. To improve the properties of starch and expand its application range, physical, chemical, or enzymatic methods are used to introduce new functional groups onto starch molecules or change the size of starch molecules and the properties of starch granules, thereby altering the natural characteristics of starch and making it more suitable for certain application requirements. This type of starch that has undergone secondary processing and has had its properties altered is collectively called modified starch.
[0003] In the current dry-process modified starch production process, all raw materials and starch are usually directly poured into the reaction equipment. Due to the lack of rapid pre-mixing of starch and raw materials during the feeding process, the mixing equipment is under increased load during processing, which easily leads to uneven mixing of modified starch components. In addition, once the various raw materials clump together, it will further affect the uniformity and efficiency of mixing, thereby affecting the quality of the final product.
[0004] In response to this technical problem, this application proposes a premixing device for dry modified starch production. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a premixing device for dry modified starch production. Through the synergistic effect of rotary stirring and vertical tumbling, the device significantly improves the uniformity of material mixing and provides a uniform material base for subsequent mixing processes.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A premixing device for dry modified starch production includes a mixing chamber, a support frame fixedly connected to the outer wall of the mixing chamber, a material hopper fixedly connected to the top of the support frame, a spiral auger connected to the inner wall of the material hopper via a conveying assembly, a motor fixedly connected to the top of the mixing chamber, a drive rod fixedly connected to the drive end of the motor, a mixing plate connected to the top of the drive rod via a mixing assembly, a connecting ring fixedly connected to the bottom of the drive rod, a fixed frame connected to the outer wall of the connecting ring via a flipping assembly, flipping plates fixedly connected to opposite ends of the fixed frame, and a discharge pipe fixedly connected to the outer wall of the front end of the mixing chamber.
[0008] Furthermore, the conveying group includes a second motor fixedly connected to the left end of the material bin, and the left end of the auger is fixedly connected to the drive end of the second motor.
[0009] Furthermore, an input pipe is fixedly connected to the outer wall of the right end of the material bin, and the bottom end of the input pipe is fixedly connected to the outer wall of the top of the mixing bin.
[0010] Furthermore, a filter chamber is fixedly connected to the top of the material silo, a screen is fixedly connected to the top of the filter chamber, and a sliding door is slidably connected to the left end of the filter chamber.
[0011] Furthermore, the stirring assembly includes a connecting frame fixedly connected to the top of the drive rod, and the top of the stirring plate is rotatably connected to the left and right ends of the connecting frame and passes through it.
[0012] Furthermore, a driven gear is rotatably connected to the top of the connecting frame, and an internal gear ring is fixedly connected to the inner wall of the top of the mixing chamber. The driven gear and the internal gear ring are meshed together, and the top of each mixing plate is fixedly connected to the bottom of the driven gear.
[0013] Furthermore, the flipping assembly includes a reciprocating lead screw fixedly connected to the bottom end of the drive rod, a slider is sleeved on the outer wall of the reciprocating lead screw, and a connecting ring is fixedly connected to the outer wall of the slider.
[0014] Furthermore, a connecting shell is fixedly connected to the bottom of the inner wall of the mixing chamber, and the outer wall of the fixing frame is slidably connected to and penetrates the four sides of the outer wall of the connecting shell.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, when the motor starts, the drive rod synchronously drives the connecting frame and the reciprocating screw to rotate. The driven gear at the end of the connecting frame meshes with the internal gear ring, driving the stirring plate to rotate on its own axis while revolving around the stirring chamber, forming a compound stirring. At the same time, the reciprocating screw drives the connecting ring through the slider, causing the fixed frame to move vertically back and forth along the connecting shell, driving the flipping plate to flip the material up and down. This dual-mode linkage design significantly improves the uniformity of material mixing through the synergistic effect of rotational stirring and vertical flipping.
[0017] 2. In this utility model, after the material is placed in the filter chamber, it is sieved through the screen, and impurities are discharged through the sliding door. The motor drives the spiral auger to quantitatively transport the filtered material in the material chamber to the mixing chamber through the input pipe. The spiral auger achieves precise control of the material flow rate by adjusting the speed. At the same time, its blade structure effectively prevents secondary agglomeration during the conveying process, ensuring the stability of the entire process from filtration and impurity discharge to conveying, and providing a uniform material base for the subsequent mixing process. Attached Figure Description
[0018] Figure 1 This is a perspective view of a premixing device for dry modified starch production proposed in this utility model;
[0019] Figure 2This is a half-sectional view of the mixing chamber of a premixing device for dry modified starch production proposed in this utility model;
[0020] Figure 3 This is a half-sectional view of the connecting shell of a premixing device for dry modified starch production proposed in this utility model;
[0021] Figure 4 This is a half-sectional view of the connecting ring of a premixing device for dry modified starch production proposed in this utility model;
[0022] Figure 5 This is a material silo diagram of a premixing device for dry modified starch production proposed in this utility model.
[0023] Legend:
[0024] 1. Mixing chamber; 2. Support frame; 3. Motor 1; 4. Input pipe; 5. Material bin; 6. Discharge pipe; 7. Motor 2; 8. Filter chamber; 9. Screen; 10. Sliding door; 11. Spiral auger; 12. Drive rod; 13. Connecting frame; 14. Driven gear; 15. Internal gear ring; 16. Mixing plate; 17. Connecting shell; 18. Fixing frame; 19. Flipping plate; 20. Reciprocating screw; 21. Connecting ring; 22. Sliding block. Detailed Implementation
[0025] 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.
[0026] Reference Figure 2 and Figure 5 This utility model provides an embodiment of a premixing device for dry modified starch production, comprising a mixing chamber 1, a support frame 2 fixedly connected to the outer wall of the mixing chamber 1, a material chamber 5 fixedly connected to the top of the support frame 2, a spiral auger 11 connected to the inner wall of the material chamber 5 via a conveying assembly, the conveying assembly including a motor 7 fixedly connected to the left end of the material chamber 5, the left end of the spiral auger 11 fixedly connected to the drive end of the motor 7, an input pipe 4 fixedly connected to the outer wall of the right end of the material chamber 5, the bottom end of the input pipe 4 fixedly connected to the top outer wall of the mixing chamber 1, a filter chamber 8 fixedly connected to the top of the material chamber 5, a screen 9 fixedly connected to the top of the filter chamber 8, and a sliding door 10 slidably connected to the left end of the filter chamber 8.
[0027] Specifically, in the material handling process, after the raw materials are initially fed into the filter chamber 8, they are first screened through a built-in vibrating screen 9 to effectively remove mixed fibers, agglomerated particles, and other foreign impurities. After screening, the operator can manually or automatically open the sliding door 10 to discharge the impurities intercepted by the screen 9 into the system, avoiding secondary pollution. Simultaneously, when motor 7 starts, its output shaft is linked with the auger 11, driving the auger blades to rotate directionally within the material chamber 5, continuously conveying the filtered material to the mixing chamber 1 at a controllable rate through the input pipe 4. During this process, the rotation speed of the auger 11 can be dynamically adjusted according to the material characteristics such as humidity and particle size, achieving precise control of the conveying volume and further breaking down residual small agglomerates through mechanical compression. Ultimately, this ensures the stability of the material conveying throughout the entire process from the filter chamber 8 to the mixing chamber 1, providing a uniform and clean raw material base for subsequent mixing processes.
[0028] Reference Figure 1 , Figure 3 and Figure 4 A motor 3 is fixedly connected to the top of the mixing chamber 1. A drive rod 12 is fixedly connected to the drive end of the motor 3. A mixing plate 16 is connected to the top of the drive rod 12 via a mixing assembly. A connecting ring 21 is fixedly connected to the bottom of the drive rod 12. A fixed frame 18 is connected to the outer wall of the connecting ring 21 via a flipping assembly. Flipping plates 19 are fixedly connected to opposite ends of the fixed frame 18. A discharge pipe 6 is fixedly connected to the outer wall of the front end of the mixing chamber 1. The mixing assembly includes a connecting frame 13 fixedly connected to the top of the drive rod 12. The tops of the mixing plates 16 are rotatably connected to the left and right ends of the connecting frame 13 and pass through... The top of the connecting frame 13 is rotatably connected to the driven gear 14, and the inner wall of the top of the mixing chamber 1 is fixedly connected to the internal gear ring 15. The driven gear 14 and the internal gear ring 15 are meshed. The top of the stirring plate 16 is fixedly connected to the bottom of the driven gear 14. The flipping assembly includes a reciprocating screw 20 fixedly connected to the bottom of the drive rod 12. The outer wall of the reciprocating screw 20 is fitted with a slider 22. The outer wall of the slider 22 is fixedly connected to the connecting ring 21. The bottom of the inner wall of the mixing chamber 1 is fixedly connected to the connecting shell 17. The outer wall of the fixing frame 18 is slidably connected to the four sides of the outer wall of the connecting shell 17 and passes through it.
[0029] Specifically: In the drive system of the mixing chamber 1, when the motor 3 starts, its output shaft drives the transmission rod 12 to rotate axially through the coupling, thereby driving the connecting frame 13 rigidly connected to it and the parallel reciprocating screw 20 to rotate synchronously. In the gear transmission unit, the driven gear 14 assembled at the end of the connecting frame 13 meshes with the annular internal gear ring 15 fixed to the top of the mixing chamber 1, so that during the revolution of the transmission rod 12, the driven gear 14 is forced to generate synchronous rotational motion through the planetary gear system. This dual rotation mode is transmitted to the mixing plate 16 through the hinge shaft, so that while it revolves circumferentially along the inner wall of the mixing chamber 1, it rotates at high speed around its own axis, forming a three-dimensional composite mixing trajectory, which significantly improves the material shearing and convection efficiency. At the same time, the rotational motion of the reciprocating screw 20 is converted into linear displacement through the precision-machined helical pair transmission: the slider 22 slides periodically back and forth along the screw axis, and drives the vertically installed fixed frame 18 to move up and down in the guide groove of the connecting shell 17 through the rigid connecting ring 21. The rotating plates 19, arrayed at the end of the fixed frame 18, generate vertical vibrations with adjustable amplitude, forcibly turning over the material deposited at the bottom of the mixing chamber 1, effectively eliminating blind spots in the mixing process. This linkage mechanism achieves spatiotemporal coordination between the horizontal vortex mixing of the mixing plate 16 and the vertical convection turning of the rotating plates 19, ensuring that the material is fully mixed in the radial, axial, and tangential directions, ultimately increasing the mixing uniformity to over 98%.
[0030] Working principle: After the material is initially placed in the filter chamber 8, the screen 9 performs preliminary sieving of the material. After the impurities are removed, the sliding door 10 is opened to discharge the impurities. When motor 7 starts, it drives the auger 11 to discharge the filtered material in the material chamber 5 from the input pipe 4, so that the input pipe 4 pours the material into the mixing chamber 1. The auger 11 is used to control the material conveying and ensure the stability of the material conveying. When motor 3 starts, the drive rod 12 drives the connecting frame 13 and the reciprocating screw. When the reciprocating screw 20 rotates, the connecting frame 13, through the driven gear 14 and the internal gear ring 15, causes the driven gear 14 to drive the stirring plate 16 to rotate, so that the stirring plate 16 rotates on its own axis while rotating in a circular motion, thus stirring the material in the stirring chamber 1. When the reciprocating screw 20 rotates, it drives the connecting ring 21 through the slider 22, causing the fixed frame 18 to reciprocate within the connecting shell 17, thereby causing the fixed frame 18 to drive the flipping plate 19 to move up and down, thus flipping the material in the stirring chamber 1, thereby improving the stirring effect of the device on the material.
[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A premixing device for dry modified starch production, comprising a mixing chamber (1), characterized in that: The outer wall of the mixing chamber (1) is fixedly connected to a support frame (2), the top of the support frame (2) is fixedly connected to a material hopper (5), the inner wall of the material hopper (5) is connected to a spiral auger (11) via a conveying assembly, the top of the mixing chamber (1) is fixedly connected to a motor (3), the driving end of the motor (3) is fixedly connected to a drive rod (12), the top of the drive rod (12) is connected to a stirring plate (16) via a stirring assembly, the bottom end of the drive rod (12) is fixedly connected to a connecting ring (21), the outer wall of the connecting ring (21) is connected to a fixed frame (18) via a flipping assembly, and each end of the fixed frame (18) is fixedly connected to a flipping plate (19), and the front outer wall of the mixing chamber (1) is fixedly connected to a discharge pipe (6).
2. The premixing device for dry modified starch production according to claim 1, characterized in that: The conveying group includes a motor 2 (7) fixedly connected to the left end of the material bin (5), and the left end of the spiral auger (11) is fixedly connected to the drive end of the motor 2 (7).
3. The premixing device for dry modified starch production according to claim 1, characterized in that: An input pipe (4) is fixedly connected to the outer wall of the right end of the material bin (5), and the bottom end of the input pipe (4) is fixedly connected to the outer wall of the top of the mixing bin (1).
4. A premixing device for dry modified starch production according to claim 1, characterized in that: The top of the material bin (5) is fixedly connected to a filter bin (8), the top of the filter bin (8) is fixedly connected to a screen (9), and the left end of the filter bin (8) is slidably connected to a sliding door (10).
5. A premixing device for dry modified starch production according to claim 1, characterized in that: The stirring assembly includes a connecting frame (13) fixedly connected to the top of the drive rod (12), and the top of the stirring plate (16) is rotatably connected to the left and right ends of the connecting frame (13) and passes through it.
6. A premixing device for dry modified starch production according to claim 5, characterized in that: The top of the connecting frame (13) is rotatably connected to a driven gear (14), and the inner wall of the top of the mixing chamber (1) is fixedly connected to an internal gear ring (15). The driven gear (14) and the internal gear ring (15) are meshed together, and the top of the mixing plate (16) is fixedly connected to the bottom of the driven gear (14).
7. A premixing device for dry modified starch production according to claim 1, characterized in that: The flipping assembly includes a reciprocating lead screw (20) fixedly connected to the bottom end of the drive rod (12), and a slider (22) is sleeved on the outer wall of the reciprocating lead screw (20), and a connecting ring (21) is fixedly connected to the outer wall of the slider (22).
8. A premixing device for dry modified starch production according to claim 1, characterized in that: The bottom of the inner wall of the mixing chamber (1) is fixedly connected to a connecting shell (17), and the outer wall of the fixing frame (18) is slidably connected to the four sides of the outer wall of the connecting shell (17) and passes through it.