A starch paste gelatinization stirring device

Abstract

The utility model relates to a kind of starch gelatinization stirring devices, including heating box, horizontal baffle is fixedly connected in the heating box, stirring drum is fixedly connected in the heating box and is located above horizontal baffle, heating cavity is formed between the outer wall of stirring drum and the inner wall of heating box, spiral heating pipe is fixedly arranged in heating cavity, spiral heating pipe is sleeved in the outside of stirring drum, industrial air heater is fixedly arranged on the outer wall of heating box, the output end of industrial air heater is communicated with the inner cavity of heating box below horizontal baffle, multiple ventilation holes are opened in horizontal baffle, multiple ventilation holes are communicated with heating cavity and are evenly distributed along the circumference of stirring drum, exhaust port that communicates heating cavity is opened in heating box, stirring mechanism is arranged in stirring drum.The utility model is convenient for controlling gelatinization temperature, makes heat distribution more uniform, improves gelatinization effect, and personnel is conveniently collected raw material evenly, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of starch gelatinization technology, specifically to a starch gelatinization stirring device. Background Technology

[0002] Starch gelatinization refers to the significant change in the physical properties of starch when the water temperature rises above 53℃, resulting in a viscous, paste-like liquid. In everyday life, starch is used to thicken sauces and gravy, utilizing this principle. Besides its applications in cooking, starch gelatinization also has uses in food processing. It can be used to thicken and maintain the shape of food, thereby improving the quality of pastries or stabilizing the internal structure of frozen foods.

[0003] During the gelatinization process, starch needs to be stirred to ensure even heating. For example, patent CN222358395U discloses a starch gelatinization device with bidirectional stirring function, resulting in better stirring effect and easier cleaning of the inner wall of the device. However, this device does not disclose its specific heating structure, and the raw material is discharged directly after gelatinization, causing it to overflow in a short time, which is not conducive to personnel collection. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a starch gelatinization stirring device that facilitates control of gelatinization temperature, ensures more uniform heat distribution, improves gelatinization effect, and allows for easy and uniform collection of raw materials by personnel, making it convenient to use.

[0005] This utility model is achieved through the following technical solution: a starch gelatinization stirring device, including a heating box, a horizontal partition fixedly connected inside the heating box, a stirring cylinder fixedly connected inside the heating box and above the horizontal partition, a heating cavity formed between the outer wall of the stirring cylinder and the inner wall of the heating box, a spiral heating tube fixedly installed inside the heating cavity, the spiral heating tube being sleeved on the outside of the stirring cylinder, an industrial hot air blower fixedly installed on the outer wall of the heating box, the output end of the industrial hot air blower communicating with the inner cavity of the heating box below the horizontal partition, multiple ventilation holes opened on the horizontal partition, the multiple ventilation holes communicating with the heating cavity and being evenly distributed along the circumference of the stirring cylinder, an exhaust port communicating with the heating cavity opened on the heating box, and a stirring mechanism installed inside the stirring cylinder.

[0006] This design uses a stirring drum and a heating chamber to form a heating cavity. A spiral heating tube rapidly heats the stirring drum within this cavity. Once the desired gelatinization temperature is reached, the spiral heating tube is discontinued. Instead, an industrial hot air blower introduces hot air into the heating cavity, filling the area around the stirring drum with a constant temperature. This hot airflow enters the cavity from bottom to top through vents in a horizontal partition, ensuring the cavity is completely filled with hot air from below. This uniform and continuous hot airflow around the stirring drum ensures even temperature distribution, eliminating dead zones and ensuring even heating of the raw materials within the drum, thus effectively guaranteeing gelatinization. During heating, a stirring mechanism continuously agitates the raw materials within the stirring drum.

[0007] As an optimization, a screw conveyor is fixedly installed in the inner cavity of the heating box below the horizontal partition. A discharge pipe is located at the bottom of the mixing drum, passing through the horizontal partition and connecting to the input port of the screw conveyor. The output port of the screw conveyor is located outside the heating box. In this optimized solution, the raw material discharged from the mixing drum is evenly transported to the outside of the heating box via the screw conveyor, preventing the material from leaking out all at once in a short time, facilitating even collection by personnel, and making it convenient to use. Furthermore, the screw conveyor is located in the cavity below the horizontal partition. An industrial hot air blower first blows hot air into this cavity, heating and insulating the screw conveyor through the hot airflow, preventing the transported raw material from cooling down, and further facilitating the conveying and discharge of the raw material.

[0008] As an optimization, the screw conveyor includes a conveying pipe fixed inside the heating chamber. The conveying pipe extends laterally, with one end penetrating the heating chamber and extending to the outside. An outlet is located on the outer wall of the conveying pipe outside the heating chamber, and an inlet is located on the outer wall of the conveying pipe inside the heating chamber. A rotating shaft is rotatably installed inside the conveying pipe, and helical blades are fixedly connected to the outer wall of the rotating shaft. This optimized solution uses a tubular screw conveyor, which is beneficial for conveying semi-liquid raw materials.

[0009] As an optimization, the shaft of the screw conveyor is linked to the mixing mechanism via a transmission mechanism. This optimized solution uses a transmission mechanism to link the two, eliminating the need for a separate motor for the screw conveyor and saving costs.

[0010] As an optimization, the stirring mechanism includes an outer tube and an inner shaft vertically arranged inside the stirring drum. The outer tube is rotatably connected to the top of the heating box and extends to the outside of the heating box. The inner shaft passes through the outer tube and is rotatably arranged. Both the upper and lower ends of the inner shaft are located outside the outer tube. A lower bevel gear is fixedly connected to the upper end of the outer tube, and an upper bevel gear is fixedly connected to the upper end of the inner shaft. The upper and lower bevel gears are arranged vertically opposite each other, and a left bevel gear meshes between them. A drive motor is fixedly installed on the top of the heating box, and the output shaft of the drive motor is fixedly connected to the left bevel gear. Multiple stirring rods are fixedly connected to the outer tube, and a scraper is fixedly connected to the inner shaft. The scraper contacts the inner wall of the stirring drum. In this optimized solution, the drive motor drives the left bevel gear to rotate, which in turn drives the meshing upper and lower bevel gears to rotate synchronously. This causes the outer tube and the inner shaft to rotate synchronously in opposite directions, so that the stirring rods stir, while the scraper scrapes the inner wall of the stirring drum to prevent material from sticking to the inner wall.

[0011] As an optimization, the transmission mechanism includes a right bevel gear meshing between the upper and lower bevel gears, with the right bevel gear opposite to the left bevel gear. A first transverse transmission rod is rotatably mounted on the top of the heating box, with one end fixed to the right bevel gear and the other end fixed to a first transmission bevel gear. The first transmission bevel gear meshes with a second transmission bevel gear. A second vertical transmission rod is rotatably mounted on the outer wall of the heating box, with its upper end fixed to the second transmission bevel gear and its lower end fixed to a third transmission bevel gear. The third transmission bevel gear meshes with a driven bevel gear. One end of the rotating shaft passes through the heating box and is fixed to the driven bevel gear. In this optimized design, the stirring mechanism simultaneously drives the right bevel gear to rotate during stirring, and the synchronous transmission of the first and second transmission rods drives the rotating shaft of the screw conveyor to rotate for material transport, saving energy.

[0012] As an optimization, a protective cover is provided on the outer wall of the heating chamber, and the drive motor, the first transmission rod, and the second transmission rod are all located inside the protective cover. This optimized solution protects the transmission mechanism with the protective cover, preventing accidental contact and injury.

[0013] As an optimization, the protective cover is provided with heat dissipation holes corresponding to the drive motor. This optimization solution dissipates heat from the drive motor through the heat dissipation holes, ensuring stable operation.

[0014] As an optimization, the spiral heating tube is an electric heating tube, and a high-temperature resistant conduit is fixed to the side wall of the heating box, extending into the heating cavity. The power cord of the spiral heating tube is threaded through the high-temperature resistant conduit. This optimized solution protects the power cord through the high-temperature resistant conduit, preventing high-temperature damage to the power cord.

[0015] The beneficial effects of this utility model are as follows: 1. This device employs a dual-mode heating system. First, rapid heating is achieved via a spiral heating element. Once the optimal gelatinization temperature is reached, the spiral heating element is discontinued. Then, an industrial hot air blower continuously pumps hot air into the heating cavity to maintain a constant temperature. The hot airflow enters the cavity from bottom to top through the vents in the horizontal partition, ensuring the cavity is filled with hot air from bottom to top. This uniform and continuous hot airflow coats the outer circumference of the mixing drum, resulting in a uniform temperature around the drum without any dead zones. The raw materials inside the drum are heated evenly, effectively guaranteeing the gelatinization process.

[0016] 2. The mixing mechanism adopts a dual-shaft synchronous rotation method. The outer tube drives the mixing rod to mix, and the inner shaft drives the scraper to scrape the inner wall of the mixing drum, which not only prevents material from sticking but also further improves the mixing effect.

[0017] 3. The screw conveyor evenly distributes the raw materials, facilitating uniform collection by personnel. Furthermore, the screw conveyor is located in a cavity below the horizontal partition. An industrial hot air blower first blows hot air into this cavity, heating and insulating the screw conveyor to prevent the conveyed raw materials from cooling down, thus further facilitating the conveying and discharge of materials.

[0018] 4. The screw conveyor and the mixing mechanism are linked by the first and second transmission rods, which saves energy and reduces operating costs. Attached Figure Description

[0019] Figure 1 This is a front view of the present utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 This is a top view of the present invention; Figure 5 This is a top sectional view of the present invention; As shown in the figure: 1. Heating box; 2. Horizontal partition; 21. Ventilation hole; 3. Stirring drum; 4. Spiral heating tube; 41. High temperature resistant conduit; 5. Discharge pipe; 6. Screw conveyor; 61. Conveying pipe; 62. Rotating shaft; 7. Industrial hot air blower; 8. Stirring mechanism; 81. Outer sleeve; 82. Inner shaft; 83. Lower bevel gear; 84. Upper bevel gear; 85. Drive motor; 86. Left bevel gear; 87. Stirring rod; 88. Scraper; 9. Right bevel gear; 10. First transmission rod; 11. First transmission bevel gear; 12. Second transmission bevel gear; 13. Second transmission rod; 14. Third transmission bevel gear; 15. Driven bevel gear; 16. Protective cover; 161. Heat dissipation hole; 17. Feed hopper; 18. Water inlet pipe; 19. Exhaust port; 20. Air inlet. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0021] like Figures 1-5 As shown, a starch gelatinization stirring device includes a heating box 1, and a horizontal partition 2 is fixedly connected inside the heating box 1. A stirring cylinder 3 is fixedly connected inside the heating box 1 and above the horizontal partition 2, and a heating cavity is formed between the outer wall of the stirring cylinder 3 and the inner wall of the heating box 1.

[0022] Specifically, the heating box 1 is a rectangular box, and the stirring drum 3 is a cylinder. The stirring drum 3 is fixed to the center of the horizontal partition 2, so that the stirring drum 3 and the heating box 1 are coaxially arranged. The upper end of the stirring drum 3 is sealed and fixed to the heating box 1, and the lower end of the stirring drum 3 is sealed and fixed to the horizontal partition 2, so that the circumferential sidewall of the stirring drum 3 and the circumferential sidewall of the heating box 1 form an annular heating cavity. The top of the heating box 1 is provided with a feed hopper 17 and a water inlet pipe 18, both of which are connected to the inner cavity of the stirring drum 3 for adding raw materials and water into the stirring drum 3, respectively.

[0023] A spiral heating tube 4 is fixedly installed inside the heating cavity, and the spiral heating tube 4 is sleeved on the outside of the stirring drum 3. An industrial hot air blower 7 is fixedly installed on the outer wall of the heating box 1. The output end of the industrial hot air blower 7 is connected to the inner cavity of the heating box 1 below the horizontal partition 2. Multiple ventilation holes 21 are opened on the horizontal partition 2. The multiple ventilation holes 21 are connected to the heating cavity and are evenly distributed along the circumference of the stirring drum 3. An exhaust port 19 connected to the heating cavity is opened on the heating box 1.

[0024] Specifically, the spiral heating tube 4 is an electric heating tube, and its upper end is fixedly connected to the top of the heating box 1. In this embodiment, the electric heating tube is a spiral electric heating tube from Yuheng, which has a built-in temperature control module for adjusting the heating temperature of the electric heating tube to achieve precise temperature control.

[0025] Preferably, a high-temperature resistant conduit 41 is fixed to the side wall of the heating chamber 1, and the high-temperature resistant conduit 41 extends into the heating cavity. The power cord of the spiral heating tube 4 is threaded through the high-temperature resistant conduit 41. The high-temperature resistant conduit 41 protects the power cord and prevents it from being damaged by high temperature.

[0026] Specifically, an air inlet 20 is provided on the side wall of the heating box 1, and the air inlet 20 is connected to the inner cavity of the heating box 1 below the horizontal partition 2. The output end of the industrial hot air blower 7 is connected to the air inlet 20. In this embodiment, the industrial hot air blower 7 is Shengchi HAM-G3A-21, and the temperature can be adjusted from room temperature to 350℃ with precise temperature control.

[0027] This device employs a dual-mode heating system. First, rapid heating is achieved via a spiral heating tube 4. Once the desired gelatinization temperature is reached, the spiral heating tube 4 is discontinued, and an industrial hot air blower 7 is used to maintain a constant temperature within the heating cavity. The hot airflow enters the heating cavity from bottom to top through the vents in the horizontal partition 2, ensuring the cavity is filled with hot air from bottom to top. This uniform and continuous hot airflow coats the outer circumference of the stirring drum 3, resulting in a uniform temperature around the drum 3 without any dead zones. The raw materials within the drum 3 are heated evenly, effectively guaranteeing the gelatinization process. It should be noted that those skilled in the art can conceive of installing temperature sensors in both the heating cavity and the stirring drum 3 to monitor the temperature of the heating cavity and the heating temperature of the raw materials within the drum 3, respectively, allowing for real-time temperature adjustments.

[0028] The stirring drum 3 is equipped with a stirring mechanism 8. The stirring mechanism 8 includes an outer tube 81 and an inner shaft 82 vertically arranged inside the stirring drum 3. The outer tube 81 is rotatably connected to the top of the heating box 1 and extends to the outside of the heating box 1. The inner shaft 82 passes through the outer tube 81 and is rotatably arranged, with both its upper and lower ends located outside the outer tube 81. A lower bevel gear 83 is fixedly connected to the upper end of the outer tube 81, and an upper bevel gear 84 is fixedly connected to the upper end of the inner shaft 82. The upper bevel gear 84 and the lower bevel gear 83 are arranged vertically opposite each other, and a left bevel gear 86 meshes between them. A drive motor 85 is fixedly installed on the top of the heating box 1, and the output shaft of the drive motor 85 is fixedly connected to the left bevel gear 86. Multiple stirring rods 87 are fixedly connected to the outer tube 81, and a scraper 88 is fixedly connected to the inner shaft 82. The scraper 88 contacts the inner wall of the stirring drum 3. The left bevel gear 86 is driven to rotate by the drive motor 85, which in turn drives the meshing upper bevel gear 84 and lower bevel gear 83 to rotate synchronously in opposite directions, thereby causing the outer sleeve 81 and inner shaft 82 to rotate synchronously in opposite directions, so that the stirring rod 87 can stir, while the scraper 88 scrapes the inner wall of the stirring drum 3 to prevent material from sticking to the inner wall.

[0029] In this embodiment, the upper part of the outer tube 81 is rotatably connected to the top of the heating box 1 via a bearing seat to ensure rotational stability. The inner shaft 82 is coaxially arranged with the outer tube 81, and the lower end of the outer tube 81 is rotatably connected to the inner shaft 82 via a mechanical seal to ensure the sealing between the outer tube 81 and the inner shaft 82 and prevent raw materials from entering.

[0030] In this embodiment, the stirring rods 87 are arranged horizontally, and multiple stirring rods 87 are arranged axially along the outer sleeve 81 to uniformly stir the raw materials inside the stirring drum 3. The scraper 88 includes a vertical rod that fits against the inner wall of the stirring drum 3, and the lower end of the vertical rod is connected and fixed to the lower end of the inner shaft 82 via a horizontal rod. Multiple horizontal auxiliary rods are fixedly connected axially to the vertical rod, and these auxiliary rods are staggered with the stirring rods 87. The auxiliary rods fill the gaps between the stirring rods 87, improving the stirring effect on the raw materials.

[0031] A screw conveyor 6 is fixedly installed in the inner cavity of the heating box 1 below the horizontal partition 2. A discharge pipe 5 is provided at the bottom of the mixing drum 3. The discharge pipe 5 passes through the horizontal partition 2 and is connected to the input port of the screw conveyor 6. The output port of the screw conveyor 6 is located outside the heating box 1.

[0032] Specifically, the inner bottom of the mixing drum 3 is cone-shaped to facilitate material discharge. The screw conveyor 6 includes a conveying pipe 61 fixed inside the heating box 1. The conveying pipe 61 extends laterally, with one end penetrating the heating box 1 and extending to the outside, while the other end is fixedly connected to the inner wall of the heating box 1. An outlet is provided on the bottom of the outer wall of the conveying pipe 61 outside the heating box 1. An inlet is provided on the top of the outer wall of the conveying pipe 61 inside the heating box 1, located directly below the discharge pipe 5 for easy connection between the discharge pipe 5 and the inlet. A solenoid valve is installed on the discharge pipe 5 for easy control of raw material discharge. A rotating shaft 62 is rotatably mounted inside the conveying pipe 61, coaxial with the conveying pipe 61, and helical blades are fixedly connected to the outer wall of the rotating shaft 62.

[0033] During discharge, the raw materials discharged from the mixing drum 3 are evenly transported to the outside of the heating box 1 by the screw conveyor 6, preventing the raw materials from being discharged all at once in a short time, facilitating the even collection of raw materials by personnel, and making it convenient to use. The height of the air inlet 20 is lower than the height of the screw conveyor 6. The screw conveyor 6 is set in the inner cavity of the heating box 1 below the horizontal partition 2. The industrial hot air blower 7 first blows hot air into this inner cavity, heating the screw conveyor 6 through the hot airflow, preventing the raw materials being transported from cooling down, and further facilitating the conveying and discharge of raw materials.

[0034] Preferably, the rotating shaft of the screw conveyor 6 is linked to the stirring mechanism 8 through a transmission mechanism.

[0035] Specifically, the transmission mechanism includes a right bevel gear 9 meshing between the upper bevel gear 84 and the lower bevel gear 83, and a left bevel gear 86 arranged opposite to the right bevel gear 9. A first transverse transmission rod 10 is rotatably mounted on the top of the heating box 1. One end of the first transmission rod 10 is fixedly connected to the right bevel gear 9, and the other end is fixedly connected to a first transmission bevel gear 11. The first transmission bevel gear 11 meshes with a second transmission bevel gear 12. A second vertical transmission rod 13 is rotatably mounted on the outer wall of the heating box 1. The upper end of the second transmission rod 13 is fixedly connected to the second transmission bevel gear 12, and the lower end of the second transmission rod 13 is fixedly connected to a third transmission bevel gear 14. The third transmission bevel gear 14 meshes with a driven bevel gear 15, and one end of the rotating shaft 62 passes through the heating box 1 and is fixedly connected to the driven bevel gear 15.

[0036] In this embodiment, the first transmission rod 10 is parallel to the rotating shaft 62, and the second transmission rod 13 is perpendicular to the first transmission rod 10. The transmission ratio of the left bevel gear 86, right bevel gear 9, upper bevel gear 84, lower bevel gear 83, first transmission bevel gear 11, second transmission bevel gear 12, and third transmission bevel gear 14 is 1:1. The transmission ratio between the third transmission bevel gear 14 and the driven bevel gear 15 is 1:2, thereby slowing down the rotational speed of the rotating shaft 62, reducing the output speed of the screw conveyor 6, and ensuring stability. When the stirring mechanism 8 stirs, it simultaneously drives the right bevel gear 9 to rotate. Through the synchronous transmission of the first transmission rod 10 and the second transmission rod 13, it drives the rotating shaft 62 of the screw conveyor 6 to rotate for material conveying, realizing the linkage between the stirring mechanism 8 and the screw conveyor 6, saving energy.

[0037] Preferably, a protective cover 16 is provided on the outer wall of the heating box 1, and the drive motor 85, the first transmission rod 10, the second transmission rod 13, the left bevel gear 86, the right bevel gear 9, the upper bevel gear 84, the lower bevel gear 83, the first transmission bevel gear 11, the second transmission bevel gear 12, the third transmission bevel gear 14, and the driven bevel gear 15 are all located inside the protective cover 16. The protective cover 16 protects the transmission mechanism and prevents accidental contact that could cause injury.

[0038] The protective cover 16 includes a horizontal section and a vertical section. The horizontal section is bolted to the top of the heating box 1. The upper end of the inner shaft 82 is rotatably connected to the horizontal section of the protective cover 16 via a bearing seat to ensure the stability of the rotation of the inner shaft 82. The horizontal section covers the drive motor 85, left bevel gear 86, right bevel gear 9, upper bevel gear 84, lower bevel gear 83, first transmission rod 10, and first transmission bevel gear 11. A vertical support plate for supporting the first transmission rod 10 is fixed inside the horizontal section, and the first transmission rod 10 is rotatably connected to the vertical support plate via a bearing. The vertical section is bolted to the outer wall of the heating box 1. The vertical section covers the second transmission rod 13, second transmission bevel gear 12, third transmission bevel gear 14, and driven bevel gear 15. A horizontal support plate for supporting the second transmission rod 13 is fixed inside the vertical section, and the second transmission rod 13 is rotatably connected to the horizontal support plate via a bearing.

[0039] The protective cover 16 has heat dissipation holes 161 on its horizontal section, which correspond to the drive motor 85. The heat dissipation holes 161 are used to dissipate heat from the drive motor 85, ensuring stable operation.

[0040] In operation, raw materials are added to the mixing drum 3 through the feed hopper 17, and water is added through the water inlet pipe 18. The spiral heating tube 4 is activated to rapidly heat the heating cavity to the gelatinization temperature. Simultaneously, the stirring mechanism 8 is activated to stir the raw materials. At this time, the solenoid valve of the discharge pipe 5 is closed. During the heating process of the spiral heating tube 4, the industrial hot air blower 7 is activated for preheating. When the spiral heating tube 4 heats the raw materials to the gelatinization temperature, heating is stopped. At this time, the hot air blown by the industrial hot air blower 7 keeps the heating cavity warm. Because the hot airflow can evenly and continuously surround the outer periphery of the mixing drum 3, the temperature around the mixing drum 3 is uniform, with no dead corners, and the raw materials inside the mixing drum 3 are heated evenly, thus effectively ensuring the gelatinization effect. During discharge, the solenoid valve is opened, and the raw materials can be evenly discharged to the outside through the spiral conveyor 6 for easy collection.

[0041] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A starch gelatinization stirring device, comprising a heating chamber (1), characterized in that: A horizontal partition (2) is fixedly connected inside the heating box (1). A stirring cylinder (3) is fixedly connected inside the heating box (1) and above the horizontal partition (2). A heating cavity is formed between the outer wall of the stirring cylinder (3) and the inner wall of the heating box (1). A spiral heating tube (4) is fixedly installed inside the heating cavity. The spiral heating tube (4) is sleeved on the outside of the stirring cylinder (3). An industrial hot air blower (7) is fixedly installed on the outer wall of the heating box (1). The output end of the industrial hot air blower (7) is connected to the inner cavity of the heating box (1) below the horizontal partition (2). Multiple ventilation holes (21) are opened on the horizontal partition (2). The multiple ventilation holes (21) are connected to the heating cavity and are evenly distributed along the circumference of the stirring cylinder (3). An exhaust port (19) connected to the heating cavity is opened on the heating box (1). A stirring mechanism (8) is provided inside the stirring cylinder (3).

2. The starch gelatinization stirring device according to claim 1, characterized in that: A screw conveyor (6) is fixed in the inner cavity of the heating box (1) below the horizontal partition (2). A discharge pipe (5) is provided at the bottom of the mixing drum (3). The discharge pipe (5) passes through the horizontal partition (2) and is connected to the input port of the screw conveyor (6). The output port of the screw conveyor (6) is located outside the heating box (1).

3. The starch gelatinization stirring device according to claim 2, characterized in that: The screw conveyor (6) includes a conveying pipe (61) fixed inside the heating box (1). The conveying pipe (61) extends laterally and one end extends through the heating box (1) to the outside. The conveying pipe (61) has an output port on the outer wall outside the heating box (1) and an input port on the outer wall inside the heating box (1). A rotating shaft (62) is rotatably installed inside the conveying pipe (61), and a spiral blade is fixed on the outer wall of the rotating shaft (62).

4. The starch gelatinization stirring device according to claim 3, characterized in that: The rotating shaft of the screw conveyor is linked to the mixing mechanism through a transmission mechanism.

5. The starch gelatinization stirring device according to claim 4, characterized in that: The stirring mechanism (8) includes an outer tube (81) and an inner shaft (82) vertically arranged inside the stirring drum (3). The outer tube (81) is rotatably connected to the top of the heating box (1) and extends to the outside of the heating box (1). The inner shaft (82) passes through the outer tube (81) and is rotatably arranged. Both the upper and lower ends of the inner shaft (82) are located outside the outer tube (81). The upper end of the outer tube (81) is fixedly connected to a lower bevel gear (83), and the upper end of the inner shaft (82) is fixedly connected to an upper bevel gear (84). The upper bevel gear (84) and the lower bevel gear (83) are arranged opposite each other and a left bevel gear (86) meshes between them. The top of the heating box (1) is fixedly provided with a drive motor (85). The output shaft of the drive motor (85) is fixedly connected to the left bevel gear (86). Multiple stirring rods (87) are fixedly connected to the outer tube (81), and a scraper (88) is fixedly connected to the inner shaft (82). The scraper (88) contacts the inner wall of the stirring drum (3).

6. The starch gelatinization stirring device according to claim 5, characterized in that: The transmission mechanism includes a right bevel gear (9) meshing between the upper bevel gear (84) and the lower bevel gear (83), with the right bevel gear (9) and the left bevel gear (86) arranged opposite to each other. A first transmission rod (10) is rotatably provided on the top of the heating box (1). One end of the first transmission rod (10) is fixedly connected to the right bevel gear (9), and the other end of the first transmission rod (10) is fixedly connected to a first transmission bevel gear (11). The first transmission bevel gear (11) meshes with a second transmission bevel gear (12). A second transmission rod (13) is rotatably provided on the outer wall of the heating box (1). The upper end of the second transmission rod (13) is fixedly connected to the second transmission bevel gear (12), and the lower end of the second transmission rod (13) is fixedly connected to a third transmission bevel gear (14). The third transmission bevel gear (14) meshes with a driven bevel gear (15). One end of the rotating shaft (62) passes through the heating box (1) and is fixedly connected to the driven bevel gear (15).

7. The starch gelatinization stirring device according to claim 6, characterized in that: The heating box (1) is provided with a protective cover (16) on its outer wall, and the drive motor (85), the first transmission rod (10) and the second transmission rod (13) are all located inside the protective cover (16).

8. The starch gelatinization stirring device according to claim 7, characterized in that: The protective cover (16) has heat dissipation holes (161) corresponding to the drive motor (85).

9. The starch gelatinization stirring device according to claim 1, characterized in that: The spiral heating tube (4) is an electric heating tube. A high-temperature resistant conduit (41) is fixed to the side wall of the heating box (1). The high-temperature resistant conduit (41) extends into the heating cavity. The power line of the spiral heating tube (4) is run through the high-temperature resistant conduit (41).

Images