A fresh-keeping storage and transportation device for raw yak milk based on ultrasonic waves and a spiral tube

Abstract

This utility model discloses a raw yak milk preservation and transportation device based on ultrasound and spiral tubes. Multiple spiral tubes are nested sequentially within a water tank, serving as containers for storing raw yak milk. The temperature of the raw yak milk can be raised or lowered by adjusting the water temperature in the tank. An ultrasonic transducer is installed at the bottom of the tank. The ultrasonic waves generated by the transducer pass through the bottom wall of the tank, the water, and the spiral tube walls before acting on the raw yak milk, inactivating enzymes and sterilizing it. Because the radial space inside the spiral tube is much smaller than that of a traditional plastic bucket, the impact force generated by the shaking of the raw yak milk on the tube wall during transportation is relatively small. Moreover, due to the spiral structure of the spiral tube itself, the shaking of the raw yak milk during transportation is along the spiral direction, which can reduce the oscillation impact of the raw yak milk on the tube wall, thereby reducing the rupture of fat globules in the raw yak milk. This provides a raw yak milk preservation and transportation device that integrates ultrasonic enzyme inactivation sterilization, low-temperature storage, and oscillation impact mitigation.

Description

Technical Field

[0001] This utility model belongs to the field of raw yak milk storage and transportation, and particularly relates to a raw yak milk preservation and transportation device based on ultrasound and a spiral tube. Background Technology

[0002] Yak farming continues the traditional method of household-based, free-range grazing. To accommodate the yaks' preference for cold climates, Tibetan herders typically choose high-altitude mountainous areas or pastures far from local dairy processing plants for summer pastures. The yak's lactation period is from June to October each year. Furthermore, compared to regular cow's milk, yak milk has a higher nutrient content, making it more susceptible to spoilage by microorganisms. The presence of more fat rafts on the surface of fat globules weakens its mechanical resistance, making it prone to rupture and floating. Additionally, the higher distribution of endogenous lipases in both the fat and whey phases facilitates lipolysis, forming short- and medium-chain volatile fatty acids with a characteristic milky odor. Therefore, raw yak milk requires timely enzyme inactivation sterilization, effective mitigation of vibration and shock, and consistent refrigeration during storage and transportation to ensure freshness and provide high-quality raw milk for subsequent processing of refined dairy products.

[0003] Currently, Tibetan herders typically use simple plastic, wooden, or stainless steel buckets to temporarily store raw yak milk, maintaining its freshness through conventional methods like cooling with cold water. However, during subsequent transportation to milk collection stations, ordinary storage buckets cannot maintain low temperatures or cushion shaking, nor do they possess the function of inactivating enzymes for sterilization. Furthermore, the relatively large lateral or radial flow space within the storage buckets causes changes in speed and direction during transport, resulting in the yak milk impacting the bucket walls and potentially rupturing fat globules. In short, existing milk storage devices are inadequate for maintaining the freshness of yak milk during storage and transportation in real-world production environments, hindering the high-value utilization of yak milk resources.

[0004] Therefore, there is an urgent need to develop a multi-functional intelligent storage and transportation device that integrates ultrasonic enzyme inactivation sterilization, low-temperature storage, and vibration shock reduction to solve the problem of quality deterioration of raw yak milk before processing, thereby ensuring the economic income of Tibetan herders and the purchase volume of high-quality raw milk and the production efficiency of high-end dairy products for dairy companies. Utility Model Content

[0005] (1) Technical problem to be solved: Provide a raw yak milk preservation and transportation device that integrates ultrasonic inactivation of enzyme sterilization, low temperature storage and reduction of vibration impact.

[0006] (2) The technical solution adopted by this utility model is as follows:

[0007] A device for preserving and transporting raw yak milk based on ultrasound and spiral tubes includes a water tank with multiple spiral tubes nested inside. The upper end of each spiral tube is connected to an upper connector, and each spiral tube is also connected to the interior of the upper connector. The upper connector has an inlet extending to the top of the water tank. The water tank is filled with a cooling medium, and the water tank has a medium inlet and a medium outlet. The lower end of each spiral tube is connected to a lower connector, and the bottom of the lower connector has an outlet pipe extending to the outside of the water tank. A support is provided at the bottom of the water tank, and an ultrasonic transducer is installed at the bottom of the water tank, connected to an ultrasonic generator.

[0008] A further technical solution involves providing a filter and a sealing cover at the inlet.

[0009] A further technical solution involves setting up a circulation pipeline between the upper and lower connectors, and connecting the circulation pipeline to a circulation pump.

[0010] (3) Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: By nesting multiple spiral tubes in the water tank, the spiral tubes are used as containers for storing raw yak milk. The temperature of the raw yak milk can be raised or lowered by adjusting the temperature of the water in the water tank to achieve the effects of heating and cooling. Before ultrasound, the temperature of the raw yak milk is adjusted to 45-60°C, and then ultrasonic enzyme inactivation sterilization is performed. Subsequently, the temperature of the raw yak milk is immediately adjusted to 4-6°C to achieve cold storage of raw yak milk. An ultrasonic transducer is installed at the bottom of the water tank. The ultrasonic waves generated by the ultrasonic transducer act on the raw yak milk after passing through the bottom wall of the water tank, the water, and the spiral tube wall. The process of inactivating enzymes and sterilizing raw yak milk using a spiral tube is beneficial because the radial space inside the tube is much smaller than that of traditional plastic containers. This reduces the impact force on the tube wall caused by the shaking of the raw yak milk during transport. Furthermore, the spiral structure of the tube itself ensures that the shaking of the raw yak milk occurs along the spiral direction, further mitigating the impact of the milk on the tube wall and reducing the reaction force on the milk itself. This increases transport stability and reduces the rupture of fat globules in the yak milk. Therefore, this device integrates ultrasonic enzyme inactivation sterilization, low-temperature storage, and shock mitigation for the preservation and transport of raw yak milk. Attached Figure Description

[0011] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the spiral tube, upper connector, and lower connector described in this utility model;

[0014] Figure 4This is a schematic diagram of the spiral tube nesting structure described in this utility model;

[0015] Figure 5 This is a schematic diagram of the internal structure of the lower connector described in this utility model;

[0016] Figure 6 This is a top view (with the closed cover removed) structural schematic diagram of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-6 As shown. A device for preserving and transporting raw yak milk based on ultrasound and spiral tubes includes a water tank 1, inside which spiral tubes 2 are arranged in multiple nested configurations. The upper end of each spiral tube 2 is connected to an upper connector 3, and each spiral tube 2 is internally connected to the upper connector 3. An inlet 4 is provided on the upper connector 3, extending to the top of the water tank 1. The water tank 1 is filled with a cooling medium, and a medium inlet 6 and a medium outlet 7 are provided on the water tank 1. The lower end of each spiral tube 2 is connected to a lower connector 8, and an outlet pipe 9 is provided at the bottom of the lower connector 8. A control valve is provided on the outlet pipe 9, which extends to the outside of the water tank 1. A support 10 is provided at the bottom of the water tank 1, and an ultrasonic transducer 11 is provided at the bottom of the water tank 1, connected to an ultrasonic generator 12. A filter screen 13 and a sealing cover 14 are provided at the inlet 4.

[0019] Working Principle: Traditional plastic milk storage containers are used for temporary storage of raw yak milk. Due to the structural characteristics of these containers, the yak milk impacts the containers during transportation, causing the fat globules to rupture. Therefore, a storage container with limited space but sufficient capacity is needed. The spiral tube 2 is a good choice. Since a single spiral tube 2 has limited storage capacity, multiple spiral tubes 2 nested together ensure sufficient capacity. Furthermore, immersing the spiral tube 2 in the water tank 1 facilitates temperature control of the yak milk. Insulating materials (rock wool, glass wool, polyurethane foam, etc.) are installed on the outer wall of the water tank 1, or a layer filled with insulating material is installed within the tank body to reduce heat exchange between the inside and outside.

[0020] The cooling medium in water tank 1 is water. Medium inlet 6 is connected to the water inlet pipe, and medium outlet 7 is connected to the drain pipe. The water inlet pipe and the drain pipe are connected to a traditional integrated heating and cooling machine (an integrated heating and cooling machine is a temperature control device that integrates heating and cooling functions). The water outlet of the integrated heating and cooling machine is connected to the water inlet pipe, and the water inlet of the integrated heating and cooling machine is connected to the drain pipe. Valves are installed at both medium inlet 6 and medium outlet 7. The temperature of the raw yak milk can be raised or lowered by adjusting the temperature of the water in the tank through the integrated heating and cooling machine. After the raw yak milk fills the spiral tube, the temperature of the raw yak milk is first adjusted to 55°C before ultrasonic treatment. Then, ultrasonic enzyme inactivation sterilization is performed. Subsequently, the temperature of the raw yak milk is immediately adjusted to 4-6°C to achieve cold storage of raw yak milk. After that, it is transported. The integrated heating and cooling machine and the raw yak milk preservation and transportation device based on ultrasonic waves and spiral tubes are installed together in the transport vehicle, and the power is provided by the transport vehicle. The manufacturer of the integrated heating and cooling unit selected in this utility model is Wuxi Guanya Constant Temperature Refrigeration Technology Co., Ltd. (Wuxi Guanya Intelligent Equipment), and the equipment model is: SUNDIZ4-3 or SUNDIZ8-3W.

[0021] Because the internal radial space of the spiral tube 2 is much smaller than that of a traditional plastic bucket, the impact or collision force of the raw yak milk on the tube wall during transportation is relatively small, and the reaction force on the milk itself is also smaller. Furthermore, due to the spiral structure of the spiral tube 2, the shaking of the raw yak milk during transportation is along the spiral direction, which can reduce the oscillation impact of the raw yak milk on the tube wall, thereby reducing the rupture of fat globules in the yak milk. An ultrasonic transducer 11 is installed at the bottom of the water tank 1, and the ultrasonic transducer 11 is connected to an ultrasonic generator 12. The connection method and operating principle of the ultrasonic transducer 11 to the ultrasonic generator 12 are well known. This invention adopts the existing ultrasonic cleaning machine method. An ultrasonic cleaning machine generally includes a water tank, a transducer, and an ultrasonic generator 12. The transducer is fixedly installed at the bottom outside the water tank; the water tank 1 of this invention is equivalent to the water tank. When the ultrasonic generator 12 is started, the ultrasonic transducer 11 begins to work. The ultrasonic waves pass through the bottom wall of the water tank 1, the water, and the wall of the spiral tube 2 before acting on the raw yak milk, achieving the effect of ultrasonic inactivation of enzymes and sterilization of the raw yak milk. The upper connector 3 is connected to all spiral tubes 2, and the lower connector 8 is connected to all spiral tubes 2. After the spiral tubes 2 are filled with milk, the upper connector 3 can be filled with yak milk, a small amount of yak milk, or the yak milk can be kept below the top of the spiral tube 2.

[0022] In this utility model, the water tank 1 is made of stainless steel, and the spiral tube 2 is made of 316L stainless steel, which is the optimal solution in terms of comprehensive performance, taking into account durability, acoustic efficiency, heat conduction and processability. The upper connector 3 and the lower connector 8 are connected by a frame. The upper end of the spiral tube 2 is connected to the upper connector 3 through a flange, and the lower end of the spiral tube 2 is connected to the lower connector 8 through a flange. The frame is welded and fixed to the inner wall of the water tank 1.

[0023] The filter screen 13 is used to filter yak milk during filling. In addition, when filling yak milk, it should be filled slowly so that the yak milk flows along the inner wall of the spiral tube 2 so that the air in the spiral tube 2 can be discharged evenly.

[0024] Example 2: Based on Example 1, a circulation pipe 15 is installed between the upper connector 3 and the lower connector 8. The upper connector 3 and circulation pipe 15 are connected to a circulation pump 16. Considering the need for uniform heat exchange and sound transmission of the yak milk in the spiral tube 2, the yak milk needs to circulate during ultrasonic treatment. The circulation pump 16 (such as a peristaltic pump, gear pump, or diaphragm pump) can briefly circulate the yak milk in the spiral tube 2. The yak milk in the lower connector 8 is drawn out by the circulation pump 16 and sent to the upper connector 3, then enters the spiral tube 2. The yak milk in the spiral tube 2 enters the lower connector 8, and so on. The circulation pump 16 is turned off during transportation. The circulation pump 16 only operates after the milk is squeezed out and poured into the spiral tube 2 to ensure the thermal ultrasonic sterilization effect and the cooling effect before subsequent transportation.

[0025] The overall process is as follows: after the yak milk is poured into the spiral tube 2, it is immediately heated. After being heated to the set temperature, the ultrasonic device is activated to perform ultrasonic enzyme inactivation sterilization. After the enzyme inactivation sterilization is completed, the yak milk is cooled (the circulation pump is activated during the heating, ultrasonic enzyme inactivation, and cooling processes). It is then cooled to about 4-6℃ (at this time, the water temperature should drop, that is, the circulation pump is turned off after reaching the refrigeration temperature). During storage and transportation, the low temperature inside the spiral tube is maintained by the cooling system and the heat insulation layer.

[0026] The above are merely preferred embodiments of this utility model.

Claims

1. An ultrasonic and spiral tube based fresh keeping storage and transportation device for raw buffalo milk, characterized in that, The system includes a water tank (1), which has a spiral tube (2) inside. The spiral tube (2) includes multiple spiral tubes, which are nested in sequence. The upper end of each spiral tube (2) is connected to an upper connector (3), and each spiral tube (2) is connected to the interior of the upper connector (3). An inlet (4) is provided on the upper connector (3), which extends to the top of the water tank (1). The water tank (1) is filled with a cooling medium. A medium inlet (6) and a medium outlet (7) are provided on the water tank (1). The lower end of each spiral tube (2) is connected to a lower connector (8). An outlet pipe (9) is provided at the bottom of the lower connector (8), which extends to the outside of the water tank (1). A support (10) is provided at the bottom of the water tank (1), and an ultrasonic transducer (11) is provided at the bottom of the water tank (1). The ultrasonic transducer (11) is connected to an ultrasonic generator (12).

2. The device as claimed in claim 1, wherein A filter screen (13) and a sealing cover (14) are provided at the inlet (4).

3. The device as claimed in claim 1, wherein the device is based on ultrasonic waves and a spiral tube for preserving and storing fresh raw cow milk. A circulation pipeline (15) is provided between the upper connector (3) and the lower connector (8), and a circulation pump (16) is connected to the circulation pipeline (15).

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