A device for quick thawing of frozen phosphorus shrimp oil

Abstract

The utility model belongs to the food thawing technical field, concretely relates to a device for quick thawing of frozen phosphorus shrimp oil, which comprises: a thawing tank, a temperature transmitter one is installed on the lower tank body in the thawing tank, a constant-temperature tank, an agitator is rotatably installed in the upper tank body in the constant-temperature tank, the agitator is drivingly connected to a speed reducer motor, a drain valve is installed on the pipeline that connects the upper tank body and the lower tank body, a temperature transmitter two and an electric heating tube are installed in the interior of the upper tank body, a circulating pipeline, the circulating pipeline comprises a three-way pipe, three ends of the three-way pipe are connected to the bottom of the lower tank body, a waste valve and a circulating valve respectively, the circulating valve is connected to the water inlet of a water pump, and the water outlet of the water pump is connected to the top side of the upper tank body through a return pipe. The water body in the lower tank body can be circulated and heated by being returned to the constant-temperature tank through the circulating pipeline, heated again and then put into the lower tank body, so as to realize the circulation and heating of the water body. The water body is transferred and heated to avoid the direct stirring and heating of the water body in the thawing tank, so that the local temperature fluctuation is avoided, and the quality of thawing is affected.

Description

Technical Field

[0001] This utility model belongs to the field of food thawing technology, specifically relating to a device for rapid thawing of frozen krill oil. Background Technology

[0002] As a functional oil rich in bioactive components, krill oil requires freezing (below -18°C) to extend its shelf life. However, the thawing process after freezing is a key factor in ensuring its quality, and a precise balance must be found between efficient thawing and strict temperature control. In existing technologies, water bath thawing has become the mainstream method for thawing frozen krill oil due to its simplicity and low cost. However, in practical applications, this technology has the following problems: First, there is an irreconcilable conflict between heating uniformity and water flow stability. When water is heated directly in the thawing tank without any water flow enhancement mechanism, heat can only be transferred through natural convection. This transfer method is extremely inefficient and inevitably leads to significant temperature stratification within the tank—the bottom area near the heating source has a higher water temperature, potentially exceeding the safe threshold of 30°C, while the upper area has a lower water temperature, often below the efficient thawing temperature of 20°C. This temperature stratification causes a "temperature difference" in the krill oil packaging submerged in the water. The oil at the bottom, in contact with the high-temperature water, oxidizes prematurely, while the upper part, in contact with the low-temperature water, remains frozen. This not only severely affects the consistency of quality after thawing but also causes the loss of active ingredients in the entire batch of products due to localized overheating. To address the issue of water temperature stratification, some devices add agitators to the thawing tank to enhance water circulation. However, this introduces new problems. The strong water flow generated by the agitator continuously impacts the krill oil packaging, causing significant differences in the heat exchange rate between different areas of the packaging surface and the water. The side facing the water flow experiences extremely high heat exchange efficiency due to the rapid water turnover, and the local temperature may rise sharply and exceed 30°C in a short period. Conversely, the side facing away from the water flow experiences slow water flow and insufficient heat exchange, remaining at a low temperature. This contradiction of "local overheating - local unthawed" keeps the krill oil in an unstable temperature environment during the thawing process. It cannot be guaranteed that all areas of the oil thaw within the optimal range of 20-25°C, ultimately leading to large fluctuations in product quality and difficulty in controlling the pass rate. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a device for rapid thawing of frozen krill oil, which solves the problem of inaccurate temperature control caused by the conflict between heating uniformity and water flow stability in existing water bath thawing technology when thawing frozen krill oil.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a device for rapid thawing of frozen krill oil, comprising: A thawing tank, comprising a lower tank body, on which a temperature transmitter is mounted. A constant temperature bath includes an upper tank body. A stirrer is rotatably mounted inside the upper tank body. One end of the stirrer is connected to the output shaft of a geared motor. The geared motor is fixed to the upper tank body. The bottom of the upper tank body is connected to the top side of a lower tank body via a pipe, and a drain valve is installed on the pipe. The bottom of the upper tank body is not lower than the top of the lower tank body. A temperature transmitter and an electric heating element are installed inside the upper tank body. The circulation pipeline includes a three-way pipe, the three ends of which are respectively connected to the bottom of the lower tank, the waste discharge valve, and the circulation valve. The circulation valve is connected to the inlet of the water pump, and the outlet of the water pump is connected to the top side of the upper tank through a return pipe.

[0005] The beneficial effects of this utility model are as follows: the water in the lower tank can be returned to the constant temperature bath through the circulation pipeline for rapid heating before being put back into the lower tank to achieve water circulation heating and utilization. The water transfer heating avoids the local temperature fluctuation caused by directly stirring and heating the water in the thawing tank, which would affect the thawing quality.

[0006] In order to effectively improve the heating uniformity of the water in the upper tank; As a further improvement to the above technical solution: the agitator is a ribbon agitator, and the bottom of the upper tank has a semi-cylindrical structure.

[0007] The beneficial effects of this improvement are: when the agitator rotates, the water in the upper tank flows along the curved inner wall of the upper tank without dead angles, ensuring the uniformity of water heating.

[0008] In order to accurately heat the water in the upper tank to the required temperature; As a further improvement to the above technical solution: both the heating element and the second temperature transmitter are located at the bottom of the upper tank, and the heating element and the second temperature transmitter are electrically connected to a controller, which includes a temperature controller.

[0009] The beneficial effects of this improvement are: the temperature transmitter can monitor and feedback the water temperature information in the upper tank, enabling the controller to control the circuit of opening and closing the heating element to heat the water to a suitable temperature.

[0010] In order to achieve automatic control of water temperature; As a further improvement to the above technical solution: the circulation valve and the drain valve are both solenoid valves, the controller includes a relay module, the relay module in the controller is electrically connected to the circulation valve, the drain valve and the water pump, and the temperature controller in the controller is electrically connected to a temperature transmitter.

[0011] The beneficial effects of this improvement are as follows: when temperature transmitter 1 detects that the water temperature in the lower tank is lower than the set threshold range, the circulation valve opens and the water pump runs to pump the water in the lower tank to the upper tank for heating. After temperature transmitter 2 detects that the water temperature has been heated to the set threshold range, the drain valve opens to put the water back into the lower tank. By transferring the water and stirring it for heating, the water is heated quickly while avoiding the impact of strong water flow fluctuations on the thawing quality.

[0012] In order to automatically drain the water in the upper tank into the lower tank; As a further improvement to the above technical solution: the relay module in the controller includes a time relay.

[0013] The beneficial effects of this improvement are as follows: after the water in the upper tank is heated to the set threshold, the drain valve is opened for a certain period of time under the control of the time relay, so that all the water in the upper tank is put into the lower tank under the action of gravity.

[0014] To ensure the safe operation of the water pump; As a further improvement to the above technical solution: a liquid level switch is also installed at the bottom of the lower tank, and the liquid level switch is electrically connected to the controller.

[0015] The beneficial effects of this improvement are: when the water level in the lower tank drops below the height of the level switch, the controller controls the circulation valve to close and the water pump to be powered off, thus preventing the water pump from running dry.

[0016] To ensure the stability of the thawing tank and constant temperature bath; As a further improvement to the above technical solution: the lower tank, the upper tank, and the controller are all fixed on the frame.

[0017] The beneficial effect of this improvement is that the frame can provide stable support for the thawing tank and the constant temperature tank.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ; In the diagram: 1. Frame; 2. Thawing tank; 21. Lower tank; 22. Temperature transmitter one; 23. Liquid level switch; 3. Constant temperature tank; 31. Upper tank; 32. Agitator; 33. Gear motor; 34. Temperature transmitter two; 35. Heating element; 36. Drain valve; 4. Circulation pipeline; 41. T-connector; 42. Waste discharge valve; 43. Circulation valve; 44. Water pump; 45. Return pipe; 5. Controller. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0021] Example 1: like Figure 1 —As shown in Figure 3: A device for rapid thawing of frozen krill oil, comprising: The thawing tank 2 includes a lower tank body 21, on which a temperature transmitter 22 is installed. A constant temperature bath 3 includes an upper tank body 31. A stirrer 32 is rotatably mounted inside the upper tank body 31. One end of the stirrer 32 is connected to the output shaft of a reduction motor 33, which is fixed to the upper tank body 31. The bottom of the upper tank body 31 is connected to the top side of a lower tank body 21 via a pipe, and a drain valve 36 is installed on the pipe. The bottom of the upper tank body 31 is not lower than the top of the lower tank body 21. A temperature transmitter 34 and an electric heating element 35 are installed inside the upper tank body 31. The circulation pipeline 4 includes a three-way pipe 41, with its three ends connected to the bottom of the lower tank 21, a waste discharge valve 42, and a circulation valve 43, respectively. The circulation valve 43 is connected to the inlet of a water pump 44, and the outlet of the water pump 44 is connected to the top of the upper tank 31 via a return pipe 45. The water in the lower tank 21 can be returned to the constant temperature bath 3 through the circulation pipeline 4 for rapid heating before being returned to the lower tank 21, thus achieving water circulation and heating utilization. This water transfer heating avoids the local temperature fluctuations caused by directly stirring and heating the water in the thawing tank 2, which would affect the thawing quality. The stirrer 32 is a ribbon stirrer. The bottom of the upper tank 31... The upper tank 31 has a semi-cylindrical structure. When the stirrer 32 rotates, the water in the upper tank 31 flows along the curved inner wall of the upper tank 31 without dead angles, ensuring uniform heating of the water. The heating element 35 and the second temperature transmitter 34 are both located at the bottom of the upper tank 31. The heating element 35 and the second temperature transmitter 34 are electrically connected to the controller 5. The controller 5 includes a thermostat. The second temperature transmitter 34 can monitor and provide feedback on the water temperature information in the upper tank 31, enabling the controller 5 to control the circuit of opening and closing the heating element 35 to heat the water to a suitable temperature. The circulation valve 43 and the drain valve 36 are both solenoid valves. The controller 5 includes a relay module. The relay module is electrically connected to the circulation valve 43, the drain valve 36, and the water pump 44. The temperature controller in the controller 5 is electrically connected to the temperature transmitter 22. When the temperature transmitter 22 detects that the water temperature in the lower tank 21 is lower than the set threshold range, the circulation valve 43 opens, and the water pump 44 runs to pump the water in the lower tank 21 to the upper tank 31 for heating. After the temperature transmitter 34 detects that the water temperature has been heated to the set threshold range, the drain valve 36 opens to return the water to the lower tank 21. By transferring and stirring the water, the thawing quality is avoided due to strong fluctuations in water flow while the water is heated quickly. The relay module in the controller 5 includes... A time relay is provided. After the water in the upper tank 31 is heated to a set threshold, the drain valve 36 is opened for a certain period of time under the control of the time relay, so that all the water in the upper tank 31 is put into the lower tank 21 under the action of gravity. A liquid level switch 23 is also installed at the bottom of the lower tank 21. The liquid level switch 23 is electrically connected to the controller 5. When the water level in the lower tank 21 drops below the height of the liquid level switch 23, the controller 5 controls the circulation valve 43 to close and the water pump 44 to cut off the power to prevent the water pump 44 from running dry. The lower tank 21, the upper tank 31 and the controller 5 are all fixed on the frame 1. The frame 1 can provide stable support for the defrosting tank 2 and the constant temperature tank 3.

[0022] The working principle of this technical solution is as follows: A suitable amount of clean water is injected into the upper tank 31, and the electric heating element 35 and the reduction motor 33 are started. The electric heating element 35 heats the water in the upper tank 31, and the ribbon agitator 32 rotates along the bottom of the semi-cylindrical structure, driving the water to circulate without dead zones, ensuring a uniform rise in water temperature. The temperature transmitter 34 monitors the water temperature in real time. When the set threshold, such as 25℃, is reached, the controller 5 automatically cuts off the power to the electric heating element, completing the preheating. The drain valve 36 is opened for a certain period of time to place the water into the lower tank 21, and then the valve is closed. The sealed packaged frozen krill oil is then steadily placed into the water in the lower tank 21, ensuring that the packages are completely submerged and do not stack on top of each other, and the static water bath thawing begins. Temperature transmitter 22 monitors the water temperature in the lower tank. If it is lower than the set lower limit, such as 20°C, controller 5 automatically opens circulation valve 43 and water pump 44 to pump the low-temperature water in the lower tank to the upper tank 31 of the constant temperature tank 3. At this time, heating element 35 restarts and works with stirrer 32 to quickly heat the water to the set threshold. After the temperature reaches the target, controller opens drain valve 36 through time relay. The constant temperature water in the upper tank flows back to the lower tank 21 under gravity, completing one cycle of heating. The above cycle process is repeated until the krill oil is completely thawed. After thawing, controller power is turned off, krill oil packaging is removed, and waste discharge valve 42 is opened to drain the water in the lower tank 21 and upper tank 31.

[0023] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of the invention; these examples are merely for the purpose of helping to understand the method and core ideas of the invention. The above descriptions are only preferred embodiments of the invention. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of the invention, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this invention.

Claims

1. A device for rapidly thawing frozen krill oil, characterized in that: include: The thawing tank (2) includes a lower tank body (21) on which a temperature transmitter (22) is installed. The constant temperature bath (3) includes an upper tank body (31), in which a stirrer (32) is rotatably installed. One end of the stirrer (32) is connected to the output shaft of a geared motor (33), which is fixed on the upper tank body (31). The bottom of the upper tank body (31) is connected to the top side of the lower tank body (21) through a pipe, and a drain valve (36) is installed on the pipe. The bottom of the upper tank body (31) is not lower than the top of the lower tank body (21). A temperature transmitter (34) and an electric heating tube (35) are installed inside the upper tank body (31). The circulation pipeline (4) includes a three-way pipe (41), the three ends of which are respectively connected to the bottom of the lower tank (21), the waste discharge valve (42) and the circulation valve (43). The circulation valve (43) is connected to the inlet of the water pump (44), and the outlet of the water pump (44) is connected to the top side of the upper tank (31) through the return pipe (45).

2. The apparatus for rapid thawing of frozen krill oil according to claim 1, characterized in that: The agitator (32) is a ribbon agitator, and the bottom of the upper tank (31) has a semi-cylindrical structure.

3. The apparatus for rapid thawing of frozen krill oil according to claim 1, characterized in that: The heating element (35) and the second temperature transmitter (34) are both located at the bottom of the upper tank (31). The heating element (35) and the second temperature transmitter (34) are electrically connected to the controller (5). The controller (5) includes a temperature controller.

4. The apparatus for rapid thawing of frozen krill oil according to claim 3, characterized in that: The circulating valve (43) and the drain valve (36) are both solenoid valves. The controller (5) includes a relay module. The relay module in the controller (5) is electrically connected to the circulating valve (43), the drain valve (36) and the water pump (44). The temperature controller in the controller (5) is electrically connected to the temperature transmitter (22).

5. The apparatus for rapid thawing of frozen krill oil according to claim 3, characterized in that: The relay module in the controller (5) includes a time relay.

6. The apparatus for rapid thawing of frozen krill oil according to claim 1, characterized in that: The bottom of the lower tank (21) is also equipped with a liquid level switch (23), which is electrically connected to the controller (5).

7. The apparatus for rapid thawing of frozen krill oil according to claim 1, characterized in that: The lower tank (21), upper tank (31) and controller (5) are all fixed on the frame (1).

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