Modified starch gelatinization device and method

Abstract

The invention relates to the technical field of starch gelatinization, and in particular to a modified starch gelatinization device and method thereof. The modified starch gelatinization device comprises an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are connected at the bottom by a support rod, a heat storage space is provided between the outer cylinder and the inner cylinder, the heating and heat preservation of the material in the gelatinization cylinder is achieved by the heat storage space, a water inlet pipe and a water return pipe are connected to the upper side of the heat storage space, during the heating gelatinization process, the water vapor in the gelatinization cylinder can be extracted by a pumping mechanism, and then sent out by a rotating shaft and refluxed to the bottom end of the rotating shaft and discharged upward again by a bottom plate, the water vapor discharged by the bottom plate passes through the gelatinization liquid and rises to the inner side of the top end of the gelatinization cylinder again, so as to realize the circulation of water vapor, on the one hand, this arrangement can avoid the water loss problem caused by gelatinization through an open boiling pot in the prior art, so that the overall water content in the gelatinization cylinder is kept stable, and the starch can be prevented from being excessively gelatinized at high temperature and causing coking.

Description

Technical Field

[0001] The invention relates to the technical field of starch gelatinization, in particular to a modified starch gelatinization device and a method thereof. Background Art

[0002] Starch gelatinization refers to the process of heating starch in water until the micelle structure of starch completely collapses, the starch molecules form single molecules, and are surrounded by water to become a paste. Currently, starch gelatinization is generally carried out in an open cooking pot.

[0003] In the starch gelatinization process, the gelatinization efficiency of starch is related to the water temperature. Within a certain range, the higher the water temperature, the higher the gelatinization efficiency. The existing open boiling gelatinization method easily makes it difficult to ensure the full gelatinization reaction due to the rapid separation of water, and easily causes the starch to be coked due to the external high temperature.

[0004] At the same time, in order to ensure that the starch is heated evenly to prevent local overheating and carbonization, an agitator is needed to maintain good mixing and slowly increase the temperature to avoid instantaneous high temperature causing starch molecules to break and affect the gelatinization effect. Existing agitators are difficult to take into account both horizontal and vertical material distribution, and there is still room for improvement.

[0005] Therefore, in view of the above problems, a modified starch gelatinization device and method are proposed. Summary of the invention

[0006] The object of the present invention is to provide a modified starch gelatinization device and method thereof, so as to solve the problem of "ensuring gelatinization effect and preventing local coking" proposed in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a modified starch gelatinization device, comprising a gelatinization cylinder with supporting feet, the gelatinization cylinder comprising an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are connected at the bottom by a supporting rod, a heat storage space is provided between the outer cylinder and the inner cylinder, the material in the gelatinization cylinder is heated and kept warm by the heat storage space, the upper side of the heat storage space is connected with a water inlet pipe and a water return pipe, the heat source in the heat storage space is replenished and updated by the water inlet pipe and the water return pipe, and the heat source is hot water;

[0008] The central position of the heat storage space is rotatably connected with a rotating shaft, which is hollow. The rotating shaft is fixedly connected with an upper push plate, a stirring rod, a lower gathering plate and a bottom plate in sequence from top to bottom. The bottom plate is also hollow and connected to the bottom end of the rotating shaft. A one-way air outlet valve is evenly embedded on the upper surface of the bottom plate. Both the upper push plate and the lower gathering plate are arc-shaped plates, and the arc opening directions of the upper push plate and the lower gathering plate are opposite.

[0009] The inner side of the top end of the rotating shaft is connected to the inside of the inner cylinder, the upper side of the gelatinization cylinder is connected to a feeding pipe for feeding the inside of the gelatinization cylinder, and the bottom end of the gelatinization cylinder is connected to a discharge pipe for discharging the inside of the gelatinization cylinder.

[0010] Under the above settings, when the present invention is used, the gelatinization liquid is first prepared, starch is dissolved in water, and a starch solution of a certain concentration is formed. Usually, an appropriate amount of water is added to every 100 grams of starch, and the solution is added to the gelatinization cylinder through the feed pipe. The gelatinization liquid entering the gelatinization cylinder should be consistent with the height of the upper push plate.

[0011] The heat source in the heat storage space is replenished and updated through the water inlet pipe and the water return pipe to achieve preheating, heating and insulation. The starch solution is heated to a temperature close to the gelatinization temperature, usually between 60-95°C, depending on the type of starch used and the intended application. A temperature sensing element, such as a thermocouple, can be set in the heat storage space to monitor the heat source temperature and the heating temperature.

[0012] Preferably, a connecting cap is spirally connected to the outer side of the bottom end of the discharge pipe, and a plug is rotatably connected to the top end of the connecting cap via a connecting rod, and the plug can move upward to be flush with the upper surface of the bottom end of the inner tube.

[0013] Under the above arrangement, after gelatinization is completed, the present invention rotates the connecting cap to separate the connecting cap from the outer side of the bottom end of the discharge pipe, and the plug leaves the inner side of the discharge pipe, so that the starch solution is discharged from the discharge pipe into the container, and then cooled by standing, and then the paste is separated by centrifugation, filtration or precipitation.

[0014] Preferably, the top of the gelatinization cylinder is fixedly connected to a pumping mechanism, the input end of the pumping mechanism is connected to an air return pipe, the bottom end of the air return pipe is connected to the inner side of the top end of the inner cylinder, the top of the rotating shaft is rotatably connected to a rotary joint, the input end of the rotary joint is fixedly connected to an air intake pipe, and the input end of the air intake pipe is connected to the output end of the pumping mechanism.

[0015] In the process of heating and gelatinization, the present invention can extract water vapor in the gelatinization cylinder through the pumping mechanism, and then send it out through the rotating shaft and flow back to the bottom end of the rotating shaft and be discharged upward again through the bottom plate. The water vapor discharged from the bottom plate passes through the gelatinized liquid and rises to the inner side of the top end of the gelatinization cylinder again, so as to realize the circulation of water vapor. On the one hand, this arrangement can avoid the water loss problem caused by gelatinization through an open boiling pot in the prior art, so that the overall water content in the gelatinization cylinder remains stable, and the starch can be prevented from being excessively gelatinized at high temperature and causing coking; on the other hand, the rising water vapor can drive the gelatinized liquid to flow upward, increase the up and down convection of the stirring device, increase the uniformity of heating, and further prevent the starch from being excessively gelatinized at high temperature; finally, it can reduce the temperature loss, avoid the temperature loss problem caused by gelatinization through an open boiling pot in the prior art, and reduce energy consumption;

[0016] In the process of heating and gelatinization, the rotating shaft rotates clockwise, and the rotating shaft drives the upper push plate, the stirring rod and the lower gathering plate on the outer side thereof to rotate. The rotation of the upper push plate can push the rising gelatinized liquid outward, and the rotation of the lower gathering plate can bring the gelatinized liquid on the outer side of the bottom of the gelatinization cylinder inward, and cooperate with the upward movement of water vapor, so that the gelatinized liquid forms a strong convection in the gelatinization cylinder, and the horizontal and vertical homogenization capabilities of the stirring device are increased.

[0017] Preferably, the pumping mechanism is an air pump.

[0018] Under the above setting, when the pumping mechanism is an air pump, the air pump will extract the water vapor in the top of the gelatinization cylinder through the return air pipe, and discharge the water vapor to the inner side of the rotating shaft through the air inlet pipe, so that the bottom plate emits gas, and the rotating joint provided plays the role of rotation compensation;

[0019] Preferably, the pumping mechanism includes a connecting cylinder, the inner center of the connecting cylinder is deviated from the axis of the rotating shaft, the rotating shaft is located to the left of the inner center of the connecting cylinder, a part of the rotating shaft on the inner side of the connecting cylinder is evenly fixedly connected to an outer plate, the inner side of the outer plate is slidably connected to an inner plate, the end of the inner plate is slidably connected to the inner wall of the connecting cylinder, and a spring is fixedly connected between the outer plate and the inner plate.

[0020] Under the above setting, the present invention also provides a pumping mechanism, which can realize automatic forced air extraction and exhaust following the rotation of the rotating shaft. The present invention makes a deviation between the inner center of the connecting tube and the axis of the rotating shaft. The rotating shaft is located to the left of the inner center of the connecting tube. When the rotating shaft rotates, it will drive the outer plate and the inner plate sliding inside to rotate. The two adjacent outer plates and the inner plate sliding inside and the inner wall of the connecting tube form a cavity. The cavity becomes larger on the right side of the connecting tube as the rotating shaft rotates, and air is extracted when passing through the return air pipe. The right side of the bottom end of the connecting tube serves as the input end of the pumping mechanism. As the rotating shaft rotates, the cavity becomes smaller on the left side of the connecting tube as the rotating shaft rotates, and air is exhausted when passing through the air inlet pipe. The left side of the top end of the connecting tube serves as the output end of the pumping mechanism, thereby realizing the pumping effect.

[0021] Preferably, two adjacent outer plates and an inner plate sliding inside thereof form a cavity with the inner wall of the connecting tube. As the rotating shaft rotates, the cavity becomes smaller on the left side of the connecting tube and becomes larger on the right side of the connecting tube. The right side of the bottom end of the connecting tube serves as the input end of the pumping mechanism, and the left side of the top end of the connecting tube serves as the output end of the pumping mechanism.

[0022] Preferably, an electric heating layer is fixedly connected to the outer surface of the rotating shaft.

[0023] Under the above settings, in order to further increase the uniformity of heating, the present invention can also be fixedly connected to the outer surface of the rotating shaft with an electric heating layer, the electric heating layer is not shown, the gas discharged from the bottom plate rises, and can also be mixed with the gelatinized liquid on the outside of the rotating shaft to form a low-density area, the fluidity of the gelatinized liquid in the low-density area is increased, and the coking phenomenon of the gelatinized liquid can be further prevented;

[0024] Preferably, a connecting rod is fixedly connected to the top of the gelatinization cylinder or the connecting cylinder, a motor is fixedly connected to the top of the connecting rod, a gear is fixedly connected to the end of the main shaft of the motor, a turntable is fixedly connected to the outside of the rotating shaft, a ball is rotatably connected to the inside of the bottom end of the turntable, the bottom end of the ball is slidably connected to the top of the gelatinization cylinder or the top of the connecting cylinder to reduce the rotational friction resistance, the outer side of the turntable is in the shape of a toothed ring, and the outer side of the turntable is meshed with the outer side of the gear.

[0025] Under the above setting, in the present invention, the rotation mode of the rotating shaft is that the motor rotates, the rotation of the motor drives the gear to rotate, and the rotation of the gear drives the rotating shaft to rotate through the turntable, thereby achieving the effects of stirring and preventing gelatinization.

[0026] A modified starch gelatinization method, the steps of which are:

[0027] S1: Preparation of gelatinization liquid: dissolve starch in water to form a starch solution of a certain concentration. Usually, an appropriate amount of water is added to every 100 grams of starch, and then added into the gelatinization cylinder through the feed pipe.

[0028] S2: Preheating: The heat source in the heat storage space is replenished and renewed through the water inlet and return pipes to achieve preheating, heating the starch solution to a temperature close to the gelatinization temperature, usually between 60-95°C, depending on the type of starch used and the intended application.

[0029] S3: Slowly increase the temperature. Slowly increase the water inlet temperature of the water inlet pipe. When it is close to the gelatinization temperature, slowly increase the temperature to avoid instantaneous high temperature causing starch molecules to rupture and affect the gelatinization effect.

[0030] S4: Maintain the temperature. During the gelatinization process, maintain the water inlet temperature of the water inlet pipe and keep the temperature stable for a period of time so that the starch can fully absorb water and undergo physical and chemical changes.

[0031] S5: Cooling and separation. After gelatinization is completed, the starch solution is discharged from the discharge pipe into the container, left to cool, and then the paste is separated by centrifugation, filtration or sedimentation.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. A modified starch gelatinization device. When the present invention is used, the gelatinization liquid is first prepared, and the starch is dissolved in water to form a starch solution of a certain concentration. Usually, an appropriate amount of water is added to every 100 grams of starch, and the solution is added to the gelatinization cylinder through a feed pipe. The gelatinization liquid entering the gelatinization cylinder should be consistent with the height of the upper push plate. The heat source in the heat storage space is replenished and updated through a water inlet pipe and a water return pipe to achieve preheating, heating and heat preservation. The starch solution is heated to a temperature close to the gelatinization temperature, usually between 60-95°C, by the heat source in the heat storage space, depending on the type of starch used and the intended application. A temperature sensing element, such as a thermocouple, can be arranged in the heat storage space to monitor the heat source temperature and the heating temperature.

[0034] 2. A modified starch gelatinization device according to the present invention can extract water vapor in the gelatinization cylinder through a pumping mechanism during the heating gelatinization process, and then send it out through a rotating shaft and flow back to the bottom end of the rotating shaft to be discharged upward again through a bottom plate. The water vapor discharged from the bottom plate passes through the gelatinization liquid and rises to the inner side of the top end of the gelatinization cylinder again to realize the circulation of water vapor. On the one hand, this arrangement can avoid the water loss problem caused by gelatinization through an open boiling pot in the prior art, so that the overall water content in the gelatinization cylinder remains stable, and can avoid the starch from being excessively gelatinized at high temperature and causing coking; on the other hand, it can enable the rising water vapor to drive the gelatinization liquid to flow upward, increase the up and down convection of the stirring device, increase the uniformity of heating, and further prevent the starch from being excessively gelatinized at high temperature; finally, it can reduce the temperature loss, avoid the temperature loss problem caused by gelatinization through an open boiling pot in the prior art, and reduce energy consumption.

[0035] 3. A modified starch gelatinization device. In the process of heating gelatinization, the rotating shaft rotates clockwise, which drives the upper push plate, the stirring rod and the lower gathering plate on the outside thereof to rotate. The rotation of the upper push plate can push the rising gelatinized liquid outward, and the rotation of the lower gathering plate can bring the gelatinized liquid on the outside of the bottom of the gelatinization cylinder inward, and cooperate with the upward movement of water vapor to form a strong convection of the gelatinized liquid in the gelatinization cylinder, thereby increasing the horizontal and vertical homogenization capabilities of the stirring device.

[0036] 4. The modified starch gelatinization device of the present invention further provides a pumping mechanism, which can realize automatic forced air extraction and exhaust following the rotation of the rotating shaft. The present invention makes a deviation between the inner center of the connecting cylinder and the axis of the rotating shaft. The rotating shaft is located to the left of the inner center of the connecting cylinder. When the rotating shaft rotates, it will drive the outer plate and the inner plate sliding inside to rotate. The two adjacent outer plates and the inner plate sliding inside and the inner wall of the connecting cylinder form a cavity. The cavity becomes larger on the right side of the connecting cylinder as the rotating shaft rotates, and exhaust is performed when passing through the return air pipe. The right side of the bottom end of the connecting cylinder serves as the input end of the pumping mechanism. As the rotating shaft rotates, the cavity becomes smaller on the left side of the connecting cylinder as the rotating shaft rotates, and exhaust is performed when passing through the air inlet pipe. The left side of the top end of the connecting cylinder serves as the output end of the pumping mechanism, thereby realizing the pumping effect.

[0037] 5. In the modified starch gelatinization device, the gas discharged from the bottom plate rises and can also mix with the gelatinized liquid on the outside of the rotating shaft to form a low-density area. The fluidity of the gelatinized liquid in the low-density area is increased, which can further prevent the gelatinized liquid from coking. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0039] Figure 2 It is a schematic diagram of the installation structure of the stirring shaft in the first embodiment of the present invention;

[0040] Figure 3 It is a schematic cross-sectional view of the gelatinization cylinder according to the first embodiment of the present invention;

[0041] Figure 4 For the present invention Figure 3 Schematic diagram of the installation structure at A in FIG.

[0042] Figure 5 is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0043] Figure 6 It is a schematic cross-sectional view of the gelatinization cylinder according to the second embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the top view of the installation structure inside the connecting cylinder of the second embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the installation structure of the stirring shaft in the second embodiment of the present invention;

[0046] Fig. 9 It is a schematic diagram of the top view of the inner plate and the outer plate in the second embodiment of the present invention;

[0047] Fig.10 For the present invention Figure 6 Schematic diagram of the installation structure at point B in the figure.

[0048] In the figure: 1. Support foot; 2. Gelatinizing cylinder; 2a. Outer cylinder; 2b. Inner cylinder; 3. Discharge pipe; 4. Connecting cap; 5. Water inlet pipe; 6. Water return pipe; 7. Air pump; 8. Air inlet pipe; 9. Rotating shaft; 10. Rotary joint; 11. Turntable; 12. Motor; 13. Connecting rod; 14. Gear; 15. Stirring rod; 16. Lower gathering plate; 17. Bottom plate; 18. Upper push plate; 19. Return pipe; 20. Heat storage space; 21. Plug; 22. Connecting cylinder; 23. Inner plate; 24. Outer plate; 25. Spring; 26. Ball; 27. Feed pipe. DETAILED DESCRIPTION

[0049] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0050] Example 1, please refer to Figure 1-4 The present invention provides a technical solution: a modified starch gelatinization device, comprising a gelatinization cylinder 2 with a support foot 1, the gelatinization cylinder 2 comprising an outer cylinder 2a and an inner cylinder 2b, the outer cylinder 2a and the inner cylinder 2b are connected at the bottom by a support rod, a heat storage space 20 is provided between the outer cylinder 2a and the inner cylinder 2b, the material in the gelatinization cylinder 2 is heated and kept warm by the heat storage space 20, the upper side of the heat storage space 20 is connected with a water inlet pipe 5 and a water return pipe 6, the heat source in the heat storage space 20 is replenished and updated by the water inlet pipe 5 and the water return pipe 6, and the heat source is hot water;

[0051] The center of the heat storage space 20 is rotatably connected with a rotating shaft 9, which is hollow. The rotating shaft 9 is fixedly connected with an upper push plate 18, a stirring rod 15, a lower gathering plate 16 and a bottom plate 17 in sequence from top to bottom. The bottom plate 17 is also hollow and communicates with the bottom end of the rotating shaft 9. A one-way air outlet valve is evenly embedded on the upper surface of the bottom plate 17. Both the upper push plate 18 and the lower gathering plate 16 are arc-shaped plates, and the arc opening directions of the upper push plate 18 and the lower gathering plate 16 are opposite.

[0052] The inner side of the top end of the rotating shaft 9 is connected to the interior of the inner cylinder 2b, the upper side of the gelatinization cylinder 2 is connected to a feed pipe 27 for feeding the inside of the gelatinization cylinder 2, and the bottom end of the gelatinization cylinder 2 is connected to a discharge pipe 3 for discharging the inside of the gelatinization cylinder 2.

[0053] Under the above settings, when the present invention is used, the gelatinization liquid is first prepared, starch is dissolved in water, and a starch solution of a certain concentration is formed. Usually, an appropriate amount of water is added to every 100 grams of starch, and the solution is added to the gelatinization barrel 2 through the feed pipe 27. The gelatinization liquid entering the gelatinization barrel 2 should be consistent with the height of the upper push plate 18.

[0054] The heat source in the heat storage space 20 is replenished and renewed through the water inlet pipe 5 and the water return pipe 6 to achieve preheating, heating and heat preservation. The starch solution is heated to a temperature close to the gelatinization temperature, usually between 60-95°C, depending on the type of starch used and the intended application. A temperature sensing element, such as a thermocouple, can be set in the heat storage space 20 to monitor the heat source temperature and the heating temperature.

[0055] Specifically, the outer side of the bottom end of the discharge pipe 3 is spirally connected with a connecting cap 4, and the top end of the connecting cap 4 is rotatably connected with a plug 21 through a connecting rod. The plug 21 can move upward to be flush with the upper surface of the bottom end of the inner tube 2b.

[0056] Under the above arrangement, after gelatinization is completed, the present invention rotates the connecting cap 4 to separate the connecting cap 4 from the outer side of the bottom end of the discharge pipe 3, and the plug 21 leaves the inner side of the discharge pipe 3, so that the starch solution is discharged from the discharge pipe 3 into the container, and then cooled by standing, and then the paste is separated by centrifugation, filtration or precipitation.

[0057] Specifically, the top of the gelatinization cylinder 2 is fixedly connected to a pumping mechanism, the input end of the pumping mechanism is connected to an air return pipe 19, the bottom end of the air return pipe 19 is connected to the inner side of the top end of the inner cylinder 2b, the top of the rotating shaft 9 is rotatably connected to a rotary joint 10, the input end of the rotary joint 10 is fixedly connected to an air intake pipe 8, and the input end of the air intake pipe 8 is connected to the output end of the pumping mechanism.

[0058] In the process of heating and gelatinization, the present invention can extract the water vapor in the gelatinization cylinder 2 through the pumping mechanism, and then send it out through the rotating shaft 9 and flow back to the bottom end of the rotating shaft 9 and be discharged upward again through the bottom plate 17. The water vapor discharged from the bottom plate 17 passes through the gelatinized liquid and rises to the inner side of the top end of the gelatinization cylinder 2 again, so as to realize the circulation of water vapor. On the one hand, this arrangement can avoid the water loss problem caused by gelatinization through an open boiling pot in the prior art, so that the overall water content in the gelatinization cylinder 2 remains stable, and can avoid the starch from being gelatinized excessively at high temperature and causing coking; on the other hand, the rising water vapor can drive the gelatinized liquid to flow upward, increase the up and down convection of the stirring device, increase the uniformity of heating, and further prevent the starch from being gelatinized excessively at high temperature; finally, it can reduce the temperature loss, avoid the temperature loss problem caused by gelatinization through an open boiling pot in the prior art, and reduce energy consumption;

[0059] In the process of heating and gelatinization of the present invention, the rotating shaft 9 rotates clockwise, and the rotating shaft 9 drives the upper push plate 18, the stirring rod 15 and the lower gathering plate 16 on the outer side thereof to rotate. The rotation of the upper push plate 18 can push the rising gelatinized liquid outward, and the rotation of the lower gathering plate 16 can bring the gelatinized liquid on the outer side of the bottom of the gelatinization cylinder 2 inward, and cooperate with the upward movement of water vapor, so that the gelatinized liquid forms a strong convection in the gelatinization cylinder 2, thereby increasing the horizontal and vertical homogenization capabilities of the stirring device;

[0060] Specifically, the pumping mechanism is an air pump 7 .

[0061] Under the above setting, when the pumping mechanism is the air pump 7, the air pump 7 will extract the water vapor in the top of the gelatinizing cylinder 2 through the return air pipe 19, and discharge the water vapor to the inner side of the rotating shaft 9 through the air inlet pipe 8, so that the bottom plate 17 emits gas, and the rotating joint 10 provided plays the role of rotation compensation;

[0062] Specifically, the pumping mechanism includes a connecting cylinder 22, the inner center of the connecting cylinder 22 is deviated from the axis of the rotating shaft 9, the rotating shaft 9 is located to the left of the inner center of the connecting cylinder 22, a part of the rotating shaft 9 on the inner side of the connecting cylinder 22 is evenly fixedly connected to an outer plate 24, the inner side of the outer plate 24 is slidably connected to an inner plate 23, the end of the inner plate 23 is slidably connected to the inner wall of the connecting cylinder 22, and a spring 25 is fixedly connected between the outer plate 24 and the inner plate 23.

[0063] Specifically, the outer surface of the rotating shaft 9 is fixedly connected with an electric heating layer.

[0064] Under the above setting, in order to further increase the uniformity of heating, the present invention can also be fixedly connected to the outer surface of the rotating shaft 9 with an electric heating layer, which is not shown. The gas discharged from the bottom plate 17 rises and can also be mixed with the gelatinized liquid on the outer side of the rotating shaft 9 to form a low-density area. The fluidity of the gelatinized liquid in the low-density area is increased, which can further prevent the gelatinized liquid from coking.

[0065] Specifically, the top of the gelatinization cylinder 2 or the connecting cylinder 22 is fixedly connected with a connecting rod 13, the top of the connecting rod 13 is fixedly connected with a motor 12, the end of the main shaft of the motor 12 is fixedly connected with a gear 14, the outer side of the rotating shaft 9 is fixedly connected with a turntable 11, the inner side of the bottom end of the turntable 11 is rotatably connected with a ball 26, the bottom end of the ball 26 is slidably connected to the top of the gelatinization cylinder 2 or the top of the connecting cylinder 22, the outer side of the turntable 11 is in a gear ring shape, and the outer side of the turntable 11 is meshed with the outer side of the gear 14.

[0066] Under the above setting, in the present invention, the rotation mode of the rotating shaft 9 is that the motor 12 rotates, the rotation of the motor 12 drives the gear 14 to rotate, and the rotation of the gear 14 drives the rotating shaft 9 to rotate through the turntable 11, thereby achieving the effects of stirring and preventing gelatinization.

[0067] Example 2: This example is a further alternative to Example 1. Figure 5-10 The present invention also provides a pumping mechanism, which can realize automatic forced air extraction and exhaust following the rotation of the rotating shaft 9. The present invention makes the inner center of the connecting tube 22 deviate from the axis of the rotating shaft 9. The rotating shaft 9 is located to the left of the inner center of the connecting tube 22. When the rotating shaft 9 rotates, it will drive the outer plate 24 and the inner plate 23 sliding inside it to rotate. The two adjacent outer plates 24 and the inner plate 23 sliding inside them and the inner wall of the connecting tube 22 form a cavity. The cavity becomes larger on the right side of the connecting tube 22 as the rotating shaft 9 rotates, and air is extracted when passing through the return air pipe 19. The right side of the bottom end of the connecting tube 22 serves as the input end of the pumping mechanism. As the rotating shaft 9 rotates, the cavity becomes smaller on the left side of the connecting tube 22 as the rotating shaft 9 rotates, and exhaust is performed when passing through the air inlet pipe 8. The left side of the top end of the connecting tube 22 serves as the output end of the pumping mechanism, thereby realizing the pumping effect.

[0068] Specifically, two adjacent outer plates 24 and the inner plate 23 sliding inside thereof form a cavity with the inner wall of the connecting tube 22. As the rotating shaft 9 rotates, the cavity becomes smaller on the left side of the connecting tube 22 and becomes larger on the right side of the connecting tube 22. The right side of the bottom end of the connecting tube 22 serves as the input end of the pumping mechanism, and the left side of the top end of the connecting tube 22 serves as the output end of the pumping mechanism.

[0069] The present invention also discloses a modified starch gelatinization method, the steps of which are:

[0070] S1: Preparation of gelatinization liquid: dissolving starch in water to form a starch solution of a certain concentration, usually adding an appropriate amount of water per 100 grams of starch, and adding it into the gelatinization cylinder 2 through the feed pipe 27.

[0071] S2: Preheating: The heat source in the heat storage space 20 is replenished and renewed through the water inlet pipe 5 and the water return pipe 6 to achieve preheating, heating the starch solution to a temperature close to the gelatinization temperature, usually between 60-95°C, depending on the type of starch used and the intended application.

[0072] S3: Slowly increase the temperature, slowly increase the water inlet temperature of the water inlet pipe 5, and slowly increase the temperature when it is close to the gelatinization temperature to avoid instantaneous high temperature causing starch molecules to break and affecting the gelatinization effect.

[0073] S4: Maintaining the temperature. During the gelatinization process, the water inlet temperature of the water inlet pipe 5 is maintained and kept stable for a period of time so that the starch can fully absorb water and undergo physical and chemical changes.

[0074] S5: Cooling and separation. After gelatinization is completed, the starch solution is discharged from the discharge pipe 3 into the container, left to cool, and then the paste is separated by centrifugation, filtration or precipitation.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modified starch gelatinization device, comprising a gelatinization cylinder (2) with supporting legs (1), characterized in that: The gelatinization cylinder (2) comprises an outer cylinder (2a) and an inner cylinder (2b), the outer cylinder (2a) and the inner cylinder (2b) being connected at the bottom by a support rod, a heat storage space (20) being provided between the outer cylinder (2a) and the inner cylinder (2b), the material in the gelatinization cylinder (2) being heated and kept warm by the heat storage space (20), the upper side of the heat storage space (20) being connected to a water inlet pipe (5) and a water return pipe (6), the heat source in the heat storage space (20) being replenished and renewed by the water inlet pipe (5) and the water return pipe (6), the heat source being hot water; The central position of the heat storage space (20) is rotatably connected to a rotating shaft (9), the rotating shaft (9) is hollow, and the rotating shaft (9) is fixedly connected to an upper push plate (18), a stirring rod (15), a lower gathering plate (16) and a bottom plate (17) in sequence from top to bottom, the bottom plate (17) is also hollow and communicates with the bottom end of the rotating shaft (9), and a one-way air outlet valve is evenly embedded on the upper surface of the bottom plate (17), the upper push plate (18) and the lower gathering plate (16) are both arc-shaped plates, and the arc opening directions of the upper push plate (18) and the lower gathering plate (16) are opposite; The inner side of the top end of the rotating shaft (9) is connected to the inside of the inner cylinder (2b); the upper side of the gelatinization cylinder (2) is connected to a feed pipe (27) for feeding materials into the inner side of the gelatinization cylinder (2); and the lower end of the gelatinization cylinder (2) is connected to a discharge pipe (3) for discharging materials from the inner side of the gelatinization cylinder (2); The outer side of the bottom end of the discharge pipe (3) is spirally connected to a connection cap (4), the top end of the connection cap (4) is rotatably connected to a plug (21) via a connecting rod, and the plug (21) can move upward to be flush with the upper surface of the bottom end of the inner tube (2b); The top end of the gelatinizing cylinder (2) is fixedly connected to a pumping mechanism, the input end of the pumping mechanism is connected to an air return pipe (19), the bottom end of the air return pipe (19) is connected to the inner side of the top end of the inner cylinder (2b), the top end of the rotating shaft (9) is rotatably connected to a rotary joint (10), the input end of the rotary joint (10) is fixedly connected to an air intake pipe (8), and the input end of the air intake pipe (8) is connected to the output end of the pumping mechanism.

2. A modified starch gelatinization device according to claim 1, characterized in that: The pumping mechanism is an air pump (7).

3. The modified starch gelatinization device according to claim 1, characterized in that: The pumping mechanism comprises a connecting cylinder (22), wherein the inner center of the connecting cylinder (22) is offset from the axis of the rotating shaft (9), the rotating shaft (9) is located to the left of the inner center of the connecting cylinder (22), a portion of the rotating shaft (9) on the inner side of the connecting cylinder (22) is evenly fixedly connected to an outer plate (24), the inner side of the outer plate (24) is slidably connected to an inner plate (23), the end of the inner plate (23) is slidably connected to the inner wall of the connecting cylinder (22), and a spring (25) is fixedly connected between the outer plate (24) and the inner plate (23).

4. A modified starch gelatinization device according to claim 3, characterized in that: Two adjacent outer plates (24) and an inner plate (23) sliding therein together with the inner wall of the connecting tube (22) form a cavity. As the rotating shaft (9) rotates, the cavity becomes smaller on the left side of the connecting tube (22) and becomes larger on the right side of the connecting tube (22). The right side of the bottom end of the connecting tube (22) serves as an input end of the pumping mechanism, and the left side of the top end of the connecting tube (22) serves as an output end of the pumping mechanism.

5. A modified starch gelatinization device according to claim 2 or 4, characterized in that: An electric heating layer is fixedly connected to the outer surface of the rotating shaft (9).

6. A modified starch gelatinization device according to claim 5, characterized in that: The top of the gelatinizing cylinder (2) or the connecting cylinder (22) is fixedly connected to a connecting rod (13), the top of the connecting rod (13) is fixedly connected to a motor (12), the end of the main shaft of the motor (12) is fixedly connected to a gear (14), the outer side of the rotating shaft (9) is fixedly connected to a turntable (11), the inner side of the bottom end of the turntable (11) is rotatably connected to a ball (26), the bottom end of the ball (26) is slidably connected to the top of the gelatinizing cylinder (2) or the top of the connecting cylinder (22), the outer side of the turntable (11) is in the shape of a toothed ring, and the outer side of the turntable (11) is meshed with the outer side of the gear (14).

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