A starch gelatinization reaction tank temperature control device

Abstract

The utility model relates to a kind of starch gelatinization reaction tank temperature control device, including reaction tank, cold water system, hot water system and control system, reaction tank is provided with jacket layer, jacket layer is linked with the cold water system and hot water system of outside and is communicated, the outside of reaction tank is provided with the control system for controlling hot water system and cold water system and jacket layer carry out water exchange.The utility model utilizes the circulation exchange of cold water system and hot water system and the water flow in jacket layer, realizes the accurate heating, cooling and insulation control to material in a reaction tank, without carrying out the operation of pouring jar;The automation of water temperature control in jacket layer is realized by controller to cold water system and hot water system control, water amount in jacket layer is unchanged in water circulation process, only through the change of water temperature keeps the circulation balance of cold and hot water.

Description

Technical Field

[0001] This utility model belongs to the field of food processing equipment technology, and in particular relates to a temperature control device for a starch gelatinization reaction tank. Background Technology

[0002] Starch production involves gelatinization and enzymatic reactions. Gelatinization requires high temperatures, while enzymatic reactions require lower temperatures. Therefore, starch production typically involves high-temperature gelatinization followed by cooling before the enzymatic reaction. Gelatinized starch has high viscosity, and uneven mixing can easily lead to incomplete gelatinization. Furthermore, after gelatinization, the starch needs to be cooled to the enzyme reaction temperature, which requires precise control. Normally, starch gelatinization and cooling are achieved using heat exchangers and repeated tank transfers. However, the high viscosity of gelatinized starch leads to significant material loss from repeated tank transfers, and this method is inefficient. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a temperature control device for a starch gelatinization reaction tank, which can achieve precise heating, cooling, and heat preservation of materials within a single reaction tank.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A temperature control device for a starch gelatinization reaction vessel includes: The reaction vessel is equipped with a jacket layer and a fishbone-type stirrer. A temperature detector is installed on one side of the reaction vessel, with the probe head of the temperature detector close to the center of the inside of the reaction vessel. The cold water system includes a cold water tank, which is connected to a chiller unit via a first pipe and a second pipe. A cold water pump is installed on the first pipe. The cold water tank is connected to the jacket layer via a cold water supply pipe and a cold water return pipe. A first temperature sensor is installed at the end of the cold water supply pipe near the cold water tank. A hot water system, comprising a hot water tank, wherein a heating rod is installed inside the hot water tank; the hot water tank is connected to the jacket layer via a hot water supply pipe and a hot water return pipe, and a second temperature sensor is installed at the end of the hot water supply pipe near the hot water tank. The control system includes a PLC controller, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. A temperature detector is connected to the PLC controller via wires. A first solenoid valve is installed on the cold water supply pipe, and a second solenoid valve is installed on the cold water return pipe. A third solenoid valve is installed on the hot water supply pipe, and a fourth solenoid valve is installed on the hot water return pipe. The PLC controller is connected to the first, second, third, and fourth solenoid valves via wires.

[0005] Furthermore, the reaction vessel is equipped with an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the jacket layer, and the other end of the inlet pipe is connected to the cold water supply pipe and the hot water supply pipe via a T-joint. One end of the outlet pipe is connected to the jacket layer, and the other end of the outlet pipe is connected to the cold return water pipe and the hot return water pipe via a T-joint.

[0006] Furthermore, the chilled water control unit includes a chiller unit connected to a chilled water tank via a first pipe and a second pipe. A chilled water pump is installed on the first pipe. The first pipe, the chiller unit, and the second pipe, which are connected in sequence, form a chilled water control unit that circulates with the chilled water tank. The water inside the chilled water control unit is driven by the chilled water pump.

[0007] Furthermore, it also includes a first PLC connected to the chiller unit, wherein the first temperature sensor is connected to the first PLC via a wire, and the first PLC is used to control the chiller unit.

[0008] Furthermore, the second temperature sensor is connected to the second PLC via wires, and the second PLC is used to control the heating rod.

[0009] Furthermore, a jacketed water inlet pump is installed on the water inlet pipe.

[0010] Furthermore, a check valve is installed on the inlet pipe between the jacketed water pump and the reaction tank.

[0011] Furthermore, the probe head of the temperature detector is located at the center of the inside of the reaction vessel.

[0012] Furthermore, the fishbone-type mixer is a four-layer mixer.

[0013] Compared with the prior art, this utility model has the following advantages: This invention utilizes a cold water system and a hot water system to achieve precise heating, cooling, and heat preservation control of materials within the same reaction tank. The controller manages both systems, automating the water temperature control within the jacket layer. During water circulation, the water volume within the jacket layer remains constant; the balance between hot and cold water circulation is maintained only by changes in water temperature. This prevents deviations between the jacket layer water temperature and the set temperature within the reaction tank, thus preventing heat transfer during prolonged reactions from affecting the reaction outcome. It also avoids material loss caused by tank swapping and helps improve production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a logic block diagram of the PLC controller of this utility model; Figure 3 This is the first PLC logic block diagram of this utility model; Figure 4 This is the second PLC logic block diagram of this utility model.

[0015] In the diagram: 1. Reaction vessel; 2. Jacket layer; 3. Herringbone agitator; 4. Cold water tank; 5. First pipe; 6. Second pipe; 7. Cold water pump; 8. Cold water supply pipe; 9. Cold water return pipe; 10. First temperature sensor; 11. Hot water tank; 12. Hot water supply pipe; 13. Hot water return pipe; 14. Second temperature sensor; 15. PLC controller; 16. First solenoid valve; 17. Second solenoid valve; 18. Third solenoid valve; 19. Fourth solenoid valve; 20. Inlet pipe; 21. Outlet pipe; 22. First PLC; 23. Second PLC; 24. Jacket inlet pump; 25. Check valve; 26. Temperature detector; 27. Probe head; 28. Chiller unit; 29. ​​Heating rod. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0017] This embodiment proposes a temperature control system for a gelatinization reaction tank, including a reaction tank 1, a cold water system, a hot water system, and a control system. The reaction tank 1 is provided with a jacket layer 2, which is connected to the external cold water system and hot water system. The reaction tank 1 is provided with a control system that can control the water exchange between the hot water system, the cold water system, and the jacket layer 2.

[0018] like Figures 1-4 As shown, the reaction vessel 1 is provided with a jacket layer 2, and hot or cold water is injected into the jacket layer 2 to regulate the internal temperature of the reaction vessel 1. The reaction vessel 1 is equipped with a fishbone-type stirrer 3, which is used to stir starch. A temperature detector 26 is installed on one side of the reaction vessel 1. The probe head 27 of the temperature detector 26 is close to the center of the inside of the reaction vessel 1. The temperature detector being close to the center of the vessel can more accurately measure the temperature of the material inside the reaction vessel.

[0019] The cold water system includes a cold water tank 4, which is connected to a chiller unit 28 via a first pipe 5 and a second pipe 6. A cold water pump 7 is installed on the first pipe 5. The cold water tank 4 is connected to the jacket layer 2 via a cold water supply pipe 8 and a cold water return pipe 9. The cold water in the cold water tank 4 can enter the jacket layer 2 through the cold water supply pipe 8, and the water in the jacket layer 2 can enter the cold water tank 4 through the cold water return pipe 9. A first temperature sensor 10 is installed at one end of the cold water pipe 8 near the cold water tank 4. During the water circulation process, the water temperature inside the cold water tank 4 will rise. The first temperature sensor 10 on the cold water pipe 8 can detect the water flow temperature output from the cold water tank 4. When the water flow temperature is too high, the chiller unit 28 is turned on and the cold water pump 7 is working. The cold water with a lower temperature enters the cold water tank 4 and adjusts the water temperature to a suitable temperature.

[0020] A hot water system, the hot water system including a hot water tank 11, a heating rod 29 is provided in the hot water tank 11, the heating rod is used to heat the water in the hot water tank 11; The hot water tank 11 is connected to the jacket layer 2 via a hot water supply pipe 12 and a hot water return pipe 13. A second temperature sensor 14 is installed at one end of the hot water supply pipe 12 near the hot water tank 11. During the water circulation process, the water temperature in the hot water tank 11 will decrease. The second sensor 14 can detect the temperature of the water injected into the jacket layer 2 from the hot water tank 11. When the temperature is low, the heating rod 29 is turned on to heat the water in the hot water tank 11 to a suitable temperature.

[0021] The control system includes a PLC controller 15, a first solenoid valve 16, a second solenoid valve 17, a third solenoid valve 18, and a fourth solenoid valve 19. A temperature detector 26 is connected to the PLC controller 15 via a wire. The temperature detector 26 is preferably a temperature sensor. The PLC controller 15 is a commonly used module in the field. Any control module that can be connected to solenoid valves and sensors, receive sensor detection signals, compare them with preset thresholds, and then control the opening and closing of relevant solenoid valves can be used in this application. Its specific structure, connection method, and principle will not be described in detail in this application.

[0022] A first solenoid valve 16 is installed on the cold water supply pipe 8, and a second solenoid valve 17 is installed on the cold water return pipe 9. When the first solenoid valve 16 is opened, the water in the cold water tank 4 can enter the jacket layer 2. When the second solenoid valve 17 is opened, the water in the jacket layer 2 can flow back to the cold water tank 4.

[0023] A third solenoid valve 18 is installed on the hot water supply pipe 12, and a fourth solenoid valve 19 is installed on the hot water return pipe 13. When the third solenoid valve 18 is opened, the water in the hot water tank 11 can enter the jacket layer 2. When the fourth solenoid valve is opened, the water in the jacket layer 2 can flow back into the hot water tank 11.

[0024] The PLC controller 15 is connected to the first solenoid valve 16, the second solenoid valve 17, the third solenoid valve 18, and the fourth solenoid valve 19 via wires. The PLC controller 15 can control the opening and closing of the first solenoid valve 16, the second solenoid valve 17, the third solenoid valve 18, and the fourth solenoid valve 19.

[0025] Furthermore, the reaction tank 1 is provided with an inlet pipe 20 and an outlet pipe 21. One end of the inlet pipe 20 is connected to the jacket layer 2, and the other end of the inlet pipe 20 is connected to the cold water supply pipe 8 and the hot water supply pipe 12 via a T-connector. One end of the outlet pipe 21 is connected to the jacket layer 2, and the other end of the outlet pipe 21 is connected to the cold return water pipe 9 and the hot return water pipe 13 via a T-connector.

[0026] Furthermore, the first temperature sensor 10 is connected to the first PLC 22 via a wire. The first PLC 22 is used to control the chiller unit 28. The first PLC 22 is used to process the signal emitted by the first temperature sensor 10 and to perform corresponding circuit on / off control on the chiller unit 28. The first PLC 22 is a commonly used module in the field. Any control module that can be connected to the sensor, receive the sensor detection signal and compare it with a preset threshold to control the chiller unit 28 can be applied to this application. Its specific structure, connection method and principle will not be described in detail in this application.

[0027] Furthermore, the second temperature sensor 14 is connected to the second PLC 23 via a wire. The second PLC 23 is used to control the heating rod 29, process the signal emitted by the second temperature sensor 14, and perform corresponding circuit on / off control on the heating rod 29. Similarly, the second PLC 23 is a commonly used module in the field. Any control module that can be connected to the sensor, receive the sensor's detection signal, compare it with a preset threshold, and then control the heating rod 29 can be applied to this application. Its specific structure, connection method, and principle will not be described in detail in this application.

[0028] Furthermore, a jacketed water inlet pump 24 is provided on the water inlet pipe 20. The jacketed water inlet pump 24 is used to pump the water inside the cold water tank 4 into the jacket layer 2 to provide power for the water flow. The jacketed water inlet pump 24 is controlled by the PLC controller 15 to turn the circuit on and off. When it is necessary to supply water into the jacket layer 2, the PLC controller 15 can control the jacketed water inlet pump 24 to be powered on and to supply water.

[0029] Furthermore, a check valve 25 is provided on the water inlet pipe 20 between the jacketed water pump 24 and the reaction tank 1. The check valve 25 prevents the water flow in the jacket layer 2 from flowing back when the water pump 24 is de-energized.

[0030] Furthermore, the fishbone-type mixer 3 is a four-layer mixer, and the multi-layer mixer makes the material more evenly mixed and achieves better results.

[0031] Working principle: When using this utility model, the starch that needs to be gelatinized and enzymatically reacted is placed in the reaction tank 1, and the fishbone stirrer 3 stirs the starch, so that the starch material that gradually becomes viscous during the gelatinization process is stirred evenly, thereby improving the gelatinization effect. The probe head 27 of the temperature detector 26 extends into the reaction vessel 1 and is located near the center of the vessel, which enables more accurate measurement of the temperature of the material inside the reaction vessel 1. If the temperature of the material inside the reaction tank 1 needs to be lowered, the PLC controller 15 controls the first solenoid valve 16 to open and the jacket water inlet pump 24 to open, allowing water to flow into the jacket layer 2 from the cold water tank 4, thus lowering the water temperature inside the jacket layer 2. At this time, the PLC controller 15 also controls the second solenoid valve 17 to open, allowing excess water inside the jacket layer 2 to flow back into the cold water tank 4, maintaining a constant water volume and achieving a balance between hot and cold water circulation. When the water temperature inside the cold water tank 4 rises, the chiller unit 28 is turned on, and the cold water pump 7 operates, allowing cooler water to enter the cold water tank 4 and adjust the water temperature to the preset temperature, preferably 10℃ in actual implementation (the specific temperature is determined in conjunction with the valve opening ratio). If the temperature of the material inside reaction tank 1 needs to be increased, PLC controller 15 controls the third solenoid valve 18 and the jacket water inlet pump 24 to open, allowing water from inside hot water tank 11 to enter the jacket layer 2, causing the water inside the jacket layer 2 to heat up rapidly. At this time, PLC controller 15 also controls the fourth solenoid valve 19 to open, allowing excess water inside the jacket layer 2 to flow back into hot water tank 11, achieving a constant water volume and a balance between hot and cold water circulation. The second sensor 14 can detect the temperature of the water injected into the jacket layer 2 from hot water tank 11. When the water temperature flowing out of hot water tank 11 is low, the heating rod 29 is turned on to heat the water in hot water tank 11 to a preset temperature, preferably 85℃ in actual implementation (the specific temperature is set in conjunction with the valve opening ratio). For example: the gelatinization temperature is set to T1, and the actual temperature measured by the temperature detector is T; that is, when T1>T, the PLC controller 15 controls the third solenoid valve 18 to be fully opened, and the water inside the hot water tank 11 flows into the jacket layer 2, so that the water inside the jacket layer 2 heats up rapidly; when T+5=T1, the PLC controller 15 will control the opening ratio of the first solenoid valve 16 to be (85-T1) / 75, and the opening ratio of the third solenoid valve 18 to be (T1-10) / 75, so that the water temperature inside the jacket layer 2 is equal to the gelatinization temperature T1, thereby achieving precise control of the material temperature rise in the reaction tank 1 and avoiding the difference between the water temperature in the jacket layer 2 and the material temperature in the reaction tank 1; After the starch gelatinization process begins and the temperature rises, the cooling phase begins. The reaction temperature is set to T2, and the actual temperature measured by the temperature detector is T. When T2 < T, the PLC controller 15 controls the first solenoid valve 16 to fully open, allowing water from the cold water tank 4 to flow into the jacket layer 2, thus lowering the water temperature within the jacket layer 2. When T-5 = T2, the PLC controller 15 controls the opening ratio of the first solenoid valve 16 to (85-T2) / 75, and the opening ratio of the third solenoid valve 18 to (T2-10) / 75, ensuring that the water temperature entering the jacket equals the reaction temperature T2. This precise cooling stabilizes the material temperature inside the reaction tank at T2, guaranteeing the accuracy of the enzyme reaction. When the first solenoid valve 16 and the third solenoid valve 18 are open, the second solenoid valve 17 and the fourth solenoid valve 19 maintain the same opening ratio as the first solenoid valve 16 and the third solenoid valve 18 at all times, so as to ensure that the water volume in the jacket layer 2 remains unchanged and to achieve a balance between hot and cold water circulation.

[0032] It is understood that the above embodiments are merely exemplary models used to illustrate the principles of this utility model, and this utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A temperature control device for a starch gelatinization reaction vessel, characterized in that, include: The reaction vessel is equipped with a jacket layer, a stirrer is installed on the reaction vessel, and a temperature detector is installed on one side of the reaction vessel. The cold water system includes a cold water tank, which is connected to an external cold water control unit. The cold water tank is connected to the jacket layer via a cold water supply pipe and a cold water return pipe. A first temperature sensor is installed at the end of the cold water supply pipe near the cold water tank. A hot water system, comprising a hot water tank, wherein a heating rod is installed inside the hot water tank; the hot water tank is connected to the jacket layer via a hot water supply pipe and a hot water return pipe, and a second temperature sensor is installed at the end of the hot water supply pipe near the hot water tank. The control system includes a PLC controller, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve. A temperature detector is connected to the PLC controller. The first solenoid valve is installed on the cold water supply pipe, and the second solenoid valve is installed on the cold water return pipe. The third solenoid valve is installed on the hot water supply pipe, and the fourth solenoid valve is installed on the hot water return pipe. The PLC controller is connected to the first, second, third, and fourth solenoid valves.

2. The temperature control device for the starch gelatinization reactor according to claim 1, characterized in that, The reaction vessel is equipped with an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the jacket layer, and the other end of the inlet pipe is connected to the cold water supply pipe and the hot water supply pipe via a T-joint. One end of the outlet pipe is connected to the jacket layer, and the other end of the outlet pipe is connected to the cold return water pipe and the hot return water pipe via a T-joint.

3. The temperature control device for the starch gelatinization reactor according to claim 1, characterized in that, The chilled water control unit includes a chiller unit connected to a chilled water tank via a first pipe and a second pipe. A chilled water pump is installed on the first pipe. The first pipe, the chiller unit, and the second pipe, which are connected in sequence, form a chilled water control unit that circulates with the chilled water tank.

4. The temperature control device for the starch gelatinization reactor according to claim 3, characterized in that, It also includes a first PLC connected to the chiller unit, the first temperature sensor being connected to the first PLC, and the first PLC being used to control the chiller unit.

5. The temperature control device for the starch gelatinization reactor according to claim 1, characterized in that, The second temperature sensor is connected to the second PLC, which is used to control the heating rod.

6. The temperature control device for the starch gelatinization reactor according to claim 2, characterized in that, A jacketed water pump is installed on the water inlet pipe.

7. The temperature control device for the starch gelatinization reactor according to claim 6, characterized in that, A check valve is installed on the inlet pipe between the jacketed water pump and the reaction tank.

8. The temperature control device for the starch gelatinization reactor according to claim 1, characterized in that, The probe head of the temperature detector is located at the center inside the reaction vessel.

9. The temperature control device for the starch gelatinization reactor according to claim 1, characterized in that, The mixer is a fishbone type mixer.

10. The temperature control device for the starch gelatinization reactor according to claim 9, characterized in that, The fishbone-type mixer is a four-layer mixer.

Images