Modified starch pretreatment equipment

Abstract

The invention relates to the technical field of starch processing, in particular to modified starch pretreatment equipment which comprises an upper gland and a lower gland which are distributed up and down, the upper gland and the lower gland are coaxial, two rotating drums are arranged between the upper gland and the lower gland, one rotating drum is located on the inner side of the other rotating drum, and the other rotating drum is located on the lower side of the upper gland. The upper gland, the lower gland and the two rotary drums form an annular cavity, and the two rotary drums can rotate on the upper gland and the lower gland; according to the equipment, the continuous starch pre-gelatinization process is realized through the circularly rotating treatment chamber, so that the intermittency of pre-gelatinization treatment in a traditional method is avoided, and the production efficiency and the productivity are greatly improved; the air guide structure not only controls the air pressure change in the treatment chamber, but also effectively utilizes the high-temperature gas extracted from the treatment chamber, and the high-temperature gas is reused as a heating source, so that the energy waste is reduced, and the overall energy utilization efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of starch processing, and particularly to a modified starch pretreatment device. Background Art

[0002] As a natural polysaccharide, starch plays an important role in industries such as food, medicine, papermaking, textile, oil extraction, and construction. However, due to its inherent limitations, such as heat sensitivity, low solubility, instability, and unsatisfactory rheological properties, natural starch performs poorly in certain applications. To overcome these limitations, modified starch has emerged. By physically, chemically, or biotechnologically modifying starch, it is endowed with improved properties, broadening its application scope.

[0003] The pregelatinization treatment of modified starch refers to the process of converting modified starch into a paste with certain characteristics through physical or chemical means. Pregelatinization is an important physical and chemical change of starch, which involves the swelling, structural disintegration, and dissolution of starch granules under the conditions of heating and water absorption, forming a viscous solution or paste. When performing pregelatinization treatment on starch, it is necessary to introduce a mixture of starch and water into a heating furnace and heat it to a specified temperature under high pressure, and then perform a pressure reduction treatment to cause the starch to rapidly expand and disintegrate under the pressure change, thereby completing the pregelatinization treatment work. However, the traditional treatment method can only perform the next pregelatinization treatment after the pregelatinization treatment of starch in the heating furnace is completed and exported. The continuity of its treatment work is poor, and at the same time, due to the pressure change, a large amount of heat will be carried by the high-temperature gas discharged from the equipment, resulting in energy waste. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a modified starch pretreatment device, and the specific technical solution adopted is as follows: A modified starch pretreatment device includes an upper pressing cover and a lower pressing cover which are distributed up and down and are coaxial. There are two rotating cylinders arranged between the upper pressing cover and the lower pressing cover, with one rotating cylinder inside the other. The upper pressing cover, the lower pressing cover, and the two rotating cylinders form an annular chamber, and the two rotating cylinders can rotate on the upper pressing cover and the lower pressing cover. A plurality of partition plates are arranged in the annular chamber. The partition plates connect the two rotating cylinders, and the plurality of partition plates divide the annular chamber into a plurality of treatment chambers; Among them, a feed pipe is connected to the upper pressing cover, a discharge pipe is connected to the lower pressing cover. Two air guide grooves are oppositely arranged on the upper pressing cover with the axis of the upper pressing cover as the reference line, and both air guide grooves are communicated with the annular chamber. And the two air guide grooves are communicated through an air guide structure, and the air guide structure is used to introduce the air in one air guide groove into the other air guide groove. An electric heating plate is arranged at the bottom of the lower pressing cover.

[0005] Further, the air guiding structure includes an air guiding cylinder and two air guiding pipes connected to both ends of the air guiding cylinder. The two air guiding pipes are respectively connected to two air guiding grooves. A power ring is rotatably arranged in the air guiding cylinder, and a plurality of fan blades are arranged on the inner wall of the power ring. When the power ring rotates, the power ring pushes the gas in the air guiding cylinder to flow.

[0006] Further, a notch is formed on the outer wall of the fan blade, and the circumferential outer wall of the power ring seals the notch. A bracket rolls on the upper pressing cover, and a first transmission wheel is rotatably arranged on the bracket. The first transmission wheel is in transmission connection with the circumferential outer wall of the power ring through the notch. A first transmission ring rolls on the inner-side rotating cylinder among the two rotating cylinders, and the first transmission ring is in transmission connection with the first transmission wheel.

[0007] Further, an avoidance groove is formed on the first transmission ring, and an annular tooth groove is formed on the circumferential outer wall of the power ring; A plurality of inclined grooves are formed at the middle position of the circumferential outer wall of the first transmission wheel, and the plurality of inclined grooves are annularly distributed around the axis of the first transmission wheel. A clamping plate is rotatably arranged in the inclined groove, and the clamping plate is connected to the first transmission wheel through an elastic piece; Wherein, the clamping plate is used in cooperation with the teeth in the annular tooth groove, and the clamping plate is located inside the avoidance groove.

[0008] Further, a rotating shaft is rotatably arranged in each processing chamber, the axis direction of the rotating shaft is along the radial direction of the upper pressing cover, and a plurality of stirring blades are arranged on the rotating shaft.

[0009] Further, the shape of the stirring blade is spiral along the radial direction of the rotating shaft.

[0010] Further, a base frame is arranged on the lower pressing cover, the base frame supports the lower pressing cover, the upper pressing cover is fixed on the base frame, and a second transmission ring is arranged on the base frame; The end of the rotating shaft extends into the inner-side rotating cylinder, and a second transmission wheel is arranged at the end of the rotating shaft. The second transmission wheel is in transmission connection with the second transmission ring.

[0011] Further, a motor is arranged on the base frame, a third transmission wheel is arranged at the output end of the motor, and the third transmission wheel is in transmission connection with the outer wall of the outer-side rotating cylinder.

[0012] The advantages of the present invention are as follows: The device realizes a continuous starch pregelatinization process through a processing chamber that rotates cyclically, avoiding the intermittency of pregelatinization treatment in traditional methods, and greatly improving production efficiency and production capacity. The air guiding structure not only controls the air pressure change in the processing chamber, but also effectively utilizes the high-temperature gas extracted from the processing chamber and uses it as a heating source again, reducing energy waste and enhancing the overall energy utilization efficiency. The automatic operation of the device reduces manual intervention, lowers labor intensity, and at the same time improves the safety and reliability of production. The efficient energy recovery mechanism reduces waste gas emissions and the impact on the environment, meeting the requirements of green production. In short, through its unique design, this new type of modified starch pregelatinization treatment device not only solves the deficiencies of traditional pregelatinization technologies, but also improves production efficiency, saves energy, and reduces production costs, which is a major technological innovation in the starch industry field. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is Figure 1 the top view sectional structure schematic diagram; Figure 3 is Figure 1 the front view sectional structure schematic diagram; Figure 4 is Figure 3 the enlarged structure schematic diagram of the middle air guiding cylinder and the first transmission ring; Figure 5 is Figure 4 the sectional structure schematic diagram of the middle air guiding cylinder; Figure 6 is Figure 2 the enlarged structure schematic diagram of the middle rotating shaft; Reference numerals: 1, upper pressure cover; 2, lower pressure cover; 3, rotating cylinder; 4, feed pipe; 5, discharge pipe; 6, partition board; 7, air guiding groove; 8, base frame; 9, air guiding cylinder; 10, air guiding pipe; 11, power ring; 12, fan blade; 13, notch; 14, first transmission wheel; 15, bracket; 16, first transmission ring; 17, annular tooth groove; 18, clamping plate; 19, elastic sheet; 20, avoidance groove; 21, rotating shaft; 22, stirring blade; 23, second transmission wheel; 24, second transmission ring; 25, motor; 26, third transmission wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. This embodiment is written in a progressive manner.

[0018] As Figures 1 to 6 shown, a modified starch pretreatment device of the present invention includes an upper pressing cover 1 and a lower pressing cover 2 which are distributed up and down. The upper pressing cover 1 and the lower pressing cover 2 are coaxial. There are two rotating cylinders 3 arranged between the upper pressing cover 1 and the lower pressing cover 2. One rotating cylinder 3 is located inside the other rotating cylinder 3. The upper pressing cover 1, the lower pressing cover 2 and the two rotating cylinders 3 form an annular chamber, and the two rotating cylinders 3 can rotate on the upper pressing cover 1 and the lower pressing cover 2. A plurality of partition plates 6 are arranged in the annular chamber. The partition plates 6 connect the two rotating cylinders 3, and the plurality of partition plates 6 divide the annular chamber into a plurality of treatment chambers; Among them, a feed pipe 4 is communicated with the upper pressing cover 1, a discharge pipe 5 is communicated with the lower pressing cover 2. Two air guide grooves 7 are oppositely arranged on the upper pressing cover 1 with the axis of the upper pressing cover 1 as the reference line. Both of the two air guide grooves 7 are communicated with the annular chamber, and the two air guide grooves 7 are communicated through an air guide structure. The air guide structure is used to introduce the air in one air guide groove 7 into the other air guide groove 7. An electric heating plate is arranged at the bottom of the lower pressing cover 2.

[0019] Specifically, the positions of the upper pressing cover 1 and the lower pressing cover 2 are fixed, and the two rotating cylinders 3 and the multiple partition plates 6 inside them can rotate between the upper pressing cover 1 and the lower pressing cover 2. In this way, the multiple processing chambers between the two rotating cylinders 3 can move in a cycle, and the processing chambers cycle through the feed pipe 4 and the discharge pipe 5. The feed pipe 4 is used to introduce the mixture of water and starch into the processing chambers between the two rotating cylinders 3. As the rotating cylinders 3 rotate, the processing chambers storing the mixture move towards the direction of the discharge pipe 5. The electric heating plate at the bottom of the lower pressing cover 2 is used to heat-treat the mixture in the processing chamber. When the mixture moves to the position of a gas guiding groove 7, the gas guiding structure supplies gas into the gas guiding groove 7 and the corresponding processing chamber, so that the mixture realizes the heating work under high pressure. When this processing chamber continues to move and deviates from the gas guiding groove 7, the mixture in the processing chamber remains under high pressure and undergoes gelatinization work. When the processing chamber moves to the position of another gas guiding groove 7, the gas guiding structure quickly evacuates the gas in the processing chamber under high pressure through this gas guiding groove 7, so that the pressure of the mixture in the processing chamber drops rapidly, and the starch in the mixture quickly collides and undergoes gelatinization work. When the processing chamber moves to the position of the discharge pipe 5, the mixture that has undergone gelatinization treatment is discharged through the discharge pipe 5. As the rotating cylinders 3 continue to rotate, the pregelatinization treatment of starch can be continuously carried out. At the same time, the gas guiding structure is used to transport the high-temperature gas in the annular chamber between the two rotating cylinders 3, so that the air pressure can be adjusted, and the high-temperature gas can heat and pressurize the mixture that starts to undergo pregelatinization treatment, thus facilitating the full utilization of thermal energy.

[0020] The equipment realizes the continuous pregelatinization process of starch through the circulating and rotating processing chambers, avoiding the intermittency of the pregelatinization treatment in the traditional method, and greatly improving the production efficiency and production capacity; the gas guiding structure not only controls the air pressure change in the processing chamber, but also effectively utilizes the high-temperature gas extracted from the processing chamber and uses it as a heating source again, reducing energy waste and improving the overall energy utilization efficiency; the automatic operation of the equipment reduces manual intervention, reduces the labor intensity, and improves the safety and reliability of production at the same time; the efficient energy recovery mechanism reduces waste gas emissions and reduces the impact on the environment, meeting the requirements of green production; in short, this new type of pregelatinization treatment equipment for modified starch not only solves the deficiencies of the traditional pregelatinization technology through its unique design, but also improves the production efficiency, saves energy, reduces the production cost, and is a major technological innovation in the starch industry.

[0021] Furthermore, the gas guiding structure includes a gas guiding cylinder 9 and two gas guiding pipes 10 connected to both ends of the gas guiding cylinder 9. The two gas guiding pipes 10 are respectively connected to the two gas guiding grooves 7. A power ring 11 is rotatably arranged in the gas guiding cylinder 9, and a plurality of fan blades 12 are arranged on the inner wall of the power ring 11. When the power ring 11 rotates, the power ring 11 pushes the gas in the gas guiding cylinder 9 to flow.

[0022] Specifically, the two air guide grooves 7 can be connected through an air guide cylinder 9 and two air guide pipes 10. The air guide cylinder 9 simultaneously provides support for the power ring 11 and the fan blades 12. When the power ring 11 and multiple fan blades 12 thereon rotate, the fan blades 12 can push the gas in the air guide cylinder 9 to flow unidirectionally, thereby sucking the gas from one air guide groove 7 and transporting it to the other air guide groove 7. This facilitates the entry of the gas in the processing chamber in a high-temperature and high-pressure state into the processing chamber in an atmospheric pressure state, facilitates the adjustment of the pressure in the processing chamber, and at the same time facilitates the heating of the mixture initially subjected to gelatinization treatment by the high-temperature gas, thereby facilitating the full utilization of energy.

[0023] Further, a notch 13 is formed on the outer wall of the fan blade 12, and the circumferential outer wall of the power ring 11 seals the notch 13. A bracket 15 rolls on the upper pressing cover 1, and a first transmission wheel 14 is rotatably provided on the bracket 15. The first transmission wheel 14 is in transmission connection with the circumferential outer wall of the power ring 11 through the notch 13. A first transmission ring 16 rolls on the inner drum 3 of the two drums 3, and the first transmission ring 16 is in transmission connection with the first transmission wheel 14.

[0024] Specifically, when the drum 3 rotates, it can drive the first transmission ring 16 to rotate. The first transmission ring 16 can drive the power ring 11 to rotate through the first transmission wheel 14, thereby providing power for the air guide structure. The bracket 15 can support the first transmission wheel 14, and the power ring 11 maintains the sealing effect on the notch 13 during rotation, thereby preventing the gas in the air guide cylinder 9 from leaking.

[0025] Further, an avoidance groove 20 is formed on the first transmission ring 16, and an annular tooth groove 17 is formed on the circumferential outer wall of the power ring 11; A plurality of inclined grooves are formed at the middle position of the circumferential outer wall of the first transmission wheel 14. The plurality of inclined grooves are annularly distributed around the axis of the first transmission wheel 14. A clamping plate 18 is rotatably provided in the inclined groove, and the clamping plate 18 is connected to the first transmission wheel 14 through an elastic piece 19; Among them, the clamping plate 18 is used in cooperation with the teeth in the annular tooth groove 17, and the clamping plate 18 is located inside the avoidance groove 20.

[0026] Specifically, the avoidance groove 20 can provide space for the clamping plate 18 on the first transmission wheel 14, thereby preventing the first transmission ring 16 from contacting the clamping plate 18. Other positions on the upper surface of the first transmission ring 16 can be in transmission connection with the left and right sides of the circumferential outer wall of the first transmission wheel 14. In this way, when the first transmission ring 16 rotates, it can still drive the first transmission wheel 14 to rotate. The first transmission wheel 14 can use the plurality of elastic pieces 19 thereon to push the teeth in the annular tooth groove 17 to move, thereby driving the power ring 11 to rotate.

[0027] During actual use, due to the pressure difference between the two air guide grooves 7, the gas will automatically be transported from the air guide groove 7 in the high-pressure state to the air guide groove 7 in the low-pressure state. At this time, due to the action of the gas, the power ring 11 can rotate automatically. The rotational speed of the power ring 11 is faster than that of the first transmission wheel 14. The teeth on the power ring 11 can push the clamping plate 18 to tilt, and the elastic piece 19 undergoes elastic deformation, thereby generating a relative movement with misaligned teeth between the power ring 11 and the first transmission wheel 14. When the pressure difference decreases, the rotational speed of the power ring 11 decreases. At this time, due to the action of the first transmission ring 16, the first transmission wheel 14 will actively drive the power ring 11 to rotate by using the clamping plate 18, thereby continuing the gas transportation and gradually transforming the processing chamber in the high-pressure state into a processing chamber in a vacuum negative pressure state.

[0028] Further, a rotating shaft 21 is rotatably provided in each of the processing chambers. The axis direction of the rotating shaft 21 is along the radial direction of the upper pressing cover 1, and a plurality of stirring blades 22 are provided on the rotating shaft 21.

[0029] Specifically, by providing the rotating shaft 21 and the stirring blades 22, it is convenient to stir the mixture in the gelatinization treatment state, so that it is uniformly heated and pressed, and the uniformity of starch gelatinization is improved.

[0030] Further, the shape of the stirring blade 22 is spiral along the radial direction of the rotating shaft 21.

[0031] Specifically, since the shape of the stirring blade 22 is spiral, the inclination direction of the corresponding position on the stirring blade 22 changes as the distance from the axis of the rotating shaft 21 changes. In this way, when the rotating shaft 21 and the stirring blades 22 rotate, different positions on the stirring blade 22 can push the mixture in different directions, thereby realizing the multi-directional pushing and mixing effect of the mixture and improving the uniformity of the mixture.

[0032] Further, a base frame 8 is provided on the lower pressing cover 2. The base frame 8 supports the lower pressing cover 2, and the upper pressing cover 1 is fixed on the base frame 8. A second transmission ring 24 is provided on the base frame 8; The end of the rotating shaft 21 extends into the inner rotating cylinder 3, and a second transmission wheel 23 is provided at the end of the rotating shaft 21. The second transmission wheel 23 is in transmission connection with the second transmission ring 24.

[0033] Specifically, when the rotating cylinder 3 rotates, it can drive the rotating shaft 21 to move synchronously. The rotating shaft 21 drives the second transmission wheel 23 to roll on the second transmission ring 24, thereby providing power for the rotation of the rotating shaft 21 and the plurality of stirring blades 22.

[0034] Further, a motor 25 is provided on the base frame 8. The output end of the motor 25 is provided with a third transmission wheel 26. The third transmission wheel 26 is in transmission connection with the outer wall of the rotating cylinder 3.

[0035] Specifically, the motor 25 and the third transmission wheel 26 can provide power for the rotation of the rotating cylinder 3.

[0036] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A modified starch pretreatment device, characterized in that, It includes an upper pressing cover (1) and a lower pressing cover (2) which are distributed up and down. The upper pressing cover (1) and the lower pressing cover (2) are coaxial. There are two rotating cylinders (3) arranged between the upper pressing cover (1) and the lower pressing cover (2). One rotating cylinder (3) is located inside the other rotating cylinder (3). The upper pressing cover (1), the lower pressing cover (2) and the two rotating cylinders (3) form an annular chamber, and the two rotating cylinders (3) can rotate on the upper pressing cover (1) and the lower pressing cover (2). A plurality of partition plates (6) are arranged in the annular chamber. The partition plates (6) connect the two rotating cylinders (3), and the plurality of partition plates (6) divide the annular chamber into a plurality of processing chambers; Among them, a feed pipe (4) is communicated with the upper pressing cover (1), and a discharge pipe (5) is communicated with the lower pressing cover (2). Two air guide grooves (7) are oppositely arranged on the upper pressing cover (1) with the axis of the upper pressing cover (1) as the reference line. Both of the two air guide grooves (7) are communicated with the annular chamber, and the two air guide grooves (7) are communicated through an air guide structure. The air guide structure is used to introduce the air in one air guide groove (7) into the other air guide groove (7). An electric heating plate is arranged at the bottom of the lower pressing cover (2).

2. The modified starch pretreatment equipment according to claim 1, wherein, The air guide structure includes an air guide cylinder (9) and two air guide pipes (10) communicated with both ends of the air guide cylinder (9). The two air guide pipes (10) are respectively communicated with the two air guide grooves (7). A power ring (11) is rotatably arranged in the air guide cylinder (9). A plurality of fan blades (12) are arranged on the inner wall of the power ring (11). When the power ring (11) rotates, the power ring (11) pushes the gas in the air guide cylinder (9) to flow.

3. The modified starch pretreatment equipment according to claim 2, characterized in that, A notch (13) is arranged on the outer wall of the fan blade (12). The circumferential outer wall of the power ring (11) seals the notch (13). A bracket (15) rolls on the upper pressing cover (1). A first transmission wheel (14) is rotatably arranged on the bracket (15). The first transmission wheel (14) is in transmission connection with the circumferential outer wall of the power ring (11) through the notch (13). A first transmission ring (16) rolls on the inner rotating cylinder (3) of the two rotating cylinders (3). The first transmission ring (16) is in transmission connection with the first transmission wheel (14).

4. The denatured starch pretreatment equipment according to claim 3, characterized in that, An avoidance groove (20) is arranged on the first transmission ring (16), and an annular tooth groove (17) is arranged on the circumferential outer wall of the power ring (11); A plurality of inclined grooves are arranged at the middle position of the circumferential outer wall of the first transmission wheel (14). The plurality of inclined grooves are annularly distributed around the axis of the first transmission wheel (14). A clamping plate (18) is rotatably arranged in the inclined groove. The clamping plate (18) is connected with the first transmission wheel (14) through an elastic piece (19); Among them, the clamping plate (18) is used in cooperation with the teeth in the annular tooth groove (17), and the clamping plate (18) is located inside the avoidance groove (20).

5. The modified starch pretreatment equipment according to claim 4, characterized in that, A rotating shaft (21) is rotatably arranged in each processing chamber. The axis direction of the rotating shaft (21) is along the radial direction of the upper pressing cover (1). A plurality of stirring blades (22) are arranged on the rotating shaft (21).

6. The modified starch pretreatment equipment according to claim 5, characterized in that, The shape of the stirring blade (22) is spiral along the radial direction of the rotating shaft (21).

7. A modified starch pretreatment device according to claim 6, characterized in that, A base frame (8) is provided on the lower pressing cover (2), the base frame (8) supports the lower pressing cover (2), and the upper pressing cover (1) is fixed on the base frame (8). A second transmission ring (24) is provided on the base frame (8). The end of the rotating shaft (21) extends into the inner rotating cylinder (3), and a second transmission wheel (23) is provided at the end of the rotating shaft (21). The second transmission wheel (23) is in transmission connection with the second transmission ring (24).

8. A modified starch pretreatment device according to claim 7, wherein, A motor (25) is provided on the base frame (8). A third transmission wheel (26) is provided at the output end of the motor (25). The third transmission wheel (26) is in transmission connection with the outer wall of the rotating cylinder (3).

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