A brine sterilization device

Abstract

The utility model relates to the production field of brine, relate to a brine sterilization device, the utility model discloses: heating tank body, heat exchange coil, double -way feeding system and control unit, heating tank body is double -deck heat preservation structure and is equipped with electric heater in bottom, the inside of heating tank body is filled with water medium, heat exchange coil is placed in heating tank body inside and is both ends and is extended to outside through heating tank body side end, double -way feeding system includes brine feed pipe, boiling water feed pipe and switch valve group, brine feed pipe is connected to heat exchange coil input end through feed pump, boiling water feed pipe is connected to the input end of heat exchange coil through the flush pump, and the medium delivery switching is realized through switch valve group, be equipped with the liquid pump on heat exchange coil output end, control unit is the PLC controller, and electric heating ware, feed pump, flush pump and switch valve group electric connection respectively.

Description

Technical Field

[0001] This utility model relates to the field of braising liquid production, and specifically to a braising liquid sterilization device. Background Technology

[0002] In the production of braising liquid, sterilization is a crucial step in ensuring its shelf life and food safety. Traditional braising liquid sterilization often involves directly heating the tank: the braising liquid is poured directly into an open or closed tank, and heated directly by external heating elements (such as heating wires or open flames). This method has significant drawbacks: First, the direct contact between the braising liquid and the heat source can lead to uneven heating, with some areas becoming excessively hot, destroying volatile flavor compounds (such as spices) and affecting the taste of the braised products. Second, after sterilization, braising liquid residue can remain inside the tank and in the connecting pipes. This residue contains rich nutrients and is highly susceptible to bacterial growth at room temperature; if not thoroughly removed, it can contaminate the next batch of braising liquid. Third, traditional equipment lacks a dedicated cleaning structure, requiring manual water rinsing of the tank. This not only consumes a large amount of water but also makes it difficult to thoroughly remove residues from corners and deep within pipes, increasing labor intensity and hygiene risks in the production process.

[0003] Therefore, in order to overcome the shortcomings of the existing technology, it is necessary to design a brine sterilization device with a simple structure. Utility Model Content

[0004] This invention provides a brine sterilization device to address the problems of existing technologies.

[0005] The objective of this utility model can be achieved through the following technical solution: A brine sterilization device includes: a heating tank, a heat exchange coil, a dual-feed system, and a control unit; the heating tank has a double-layer insulation structure and an electric heater at the bottom, and the heating tank contains water medium; the heat exchange coil is S-shaped and placed inside the heating tank, with both ends extending through the sides of the heating tank to the outside; the dual-feed system includes a brine feed pipe, a boiling water feed pipe, and a switching valve group; the brine feed pipe is connected to the input end of the heat exchange coil through a feed pump, the boiling water feed pipe is connected to the input end of the heat exchange coil through a flushing pump, and the switching valve group is used to switch the medium transport; a liquid discharge pump is provided at the output end of the heat exchange coil; the control unit is a PLC controller, which is electrically connected to the electric heater, the feed pump, the flushing pump, and the switching valve group.

[0006] Further improvements include the heat exchange coil being made of 316 stainless steel, with an inner diameter of 30-50mm and a total length of 6-8m.

[0007] As a further improvement, the switching valve assembly is a pneumatic three-way valve, installed at the confluence of the brine inlet pipe and the boiling water inlet pipe.

[0008] As a further improvement, the heating tank is provided with a water inlet pipe at the top and a drain pipe at the bottom.

[0009] As a further improvement, a temperature sensor is installed on the side wall of the heating tank, and the temperature sensor is connected to a PLC controller.

[0010] Compared with the prior art, the beneficial effects of this utility model brine sterilization device are as follows:

[0011] Indirect heating ensures more even heating of the braising liquid, preventing localized high temperatures from damaging flavor compounds and solving the flavor loss problem caused by traditional direct heating. The S-shaped coil increases the residence path and heat exchange area of ​​the braising liquid in the heating tank, improving heat exchange efficiency and ensuring that the braising liquid is fully heated during flow, resulting in more thorough sterilization. The dual-feed system effectively removes residual braising liquid from the coil through boiling water rinsing, reducing the risk of bacterial growth and solving the problems of difficult cleaning and residual contamination in traditional equipment. The PLC controller enables fully automated control of the entire process, reducing differences in manual operation, ensuring consistent sterilization effect for each batch of braising liquid, and improving production stability and efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] In the diagram, 1-heating tank, 11-electric heater, 12-temperature sensor, 13-water inlet pipe, 14-drain pipe, 2-heat exchange coil, 3-dual feeding system, 31-brine feed pipe, 32-boiling water feed pipe, 33-switching valve group, 34-feed pump, 35-rinse pump, 4-control unit, 5-liquid discharge pump. Detailed Implementation

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0015] The following describes the embodiments and appendices. Figure 1 The technical solution of this utility model will be further described below.

[0016] Example 1

[0017] A brine sterilization device includes: a heating tank 1, a heat exchange coil 2, a dual-feed system 3, and a control unit 4; the heating tank 1 has a double-layer insulation structure and an electric heater 11 at the bottom, and the heating tank 1 contains water medium; the heat exchange coil 2 is S-shaped and placed inside the heating tank 1, with both ends extending through the side ends of the heating tank 1 to the outside; the dual-feed system 3 includes a brine feed pipe 31, a boiling water feed pipe 32, and a switching valve group 33, the brine feed pipe 31 is connected to the input end of the heat exchange coil 2 through a feed pump 34, the boiling water feed pipe 32 is connected to the input end of the heat exchange coil 2 through a flushing pump 35, and the switching valve group 33 realizes the switching of medium delivery; the output end of the heat exchange coil 2 is provided with a liquid discharge pump 5; the control unit 4 is a PLC controller, which is electrically connected to the electric heater 11, the feed pump 34, the flushing pump 35, and the switching valve group 33 respectively.

[0018] like Figure 1 As shown, the working principle of this utility model is as follows:

[0019] The heating tank serves as the core heating medium, containing water. The electric heater at the bottom generates heat when powered on, directly heating the water to a set temperature (such as boiling). Because the heating tank has a double-layer insulation structure, heat loss to the outside can be reduced, maintaining a stable water temperature.

[0020] The heat exchange coil, shaped like an S, is placed inside the heating tank, with its two ends extending outside the tank to connect to the inlet and outlet ends, respectively. When the water medium is heated, the heat is transferred through the coil wall to the flowing brine inside, achieving brine heating and sterilization. This indirect heat transfer method of "water medium-coil-brine" avoids direct contact between the brine and the electric heater, fundamentally solving the problem of localized overheating in traditional direct heating.

[0021] The brine feed pipe pumps the brine to be sterilized into the heat exchange coil through the feed pump. After sterilization, it is discharged from the discharge end. After sterilization, the switching valve group switches to the boiling water feed pipe, and the flushing pump pumps boiling water (high temperature water) into the coil to flush the brine remaining on the inner wall of the coil.

[0022] The control unit (PLC controller) receives signals from each component and issues instructions: controls the start and stop of the electric heater to maintain the water temperature, controls the running time of the feed pump and rinsing pump to adjust the brine flow and rinsing duration, and controls the switching timing of the switching valve group to achieve seamless connection between sterilization and rinsing, without the need for manual intervention throughout the process.

[0023] Indirect heating ensures more even heating of the braising liquid, preventing localized high temperatures from damaging flavor compounds and solving the flavor loss problem caused by traditional direct heating. The S-shaped coil increases the residence path and heat exchange area of ​​the braising liquid in the heating tank, improving heat exchange efficiency and ensuring that the braising liquid is fully heated during flow, resulting in more thorough sterilization. The dual-feed system effectively removes residual braising liquid from the coil through boiling water rinsing, reducing the risk of bacterial growth and solving the problems of difficult cleaning and residual contamination in traditional equipment. The PLC controller enables fully automated control of the entire process, reducing differences in manual operation, ensuring consistent sterilization effect for each batch of braising liquid, and improving production stability and efficiency.

[0024] As a further preferred embodiment, the heat exchange coil 2 is made of 316 stainless steel, with an inner diameter of 30-50 mm and a total length of 6-8 m. Because brine contains salt, spice extracts, and other components, prolonged contact with metal materials can easily lead to corrosion. Food production equipment must meet food safety standards, and components in direct contact with the brine must be corrosion-resistant and not release harmful substances into the brine. Compared to conventional food-grade metals (such as 304 stainless steel), 316 stainless steel, due to the addition of molybdenum, has stronger resistance to chloride corrosion, making it particularly suitable for contact with salty brine; simultaneously, its high surface smoothness makes it less prone to adsorbing brine residue.

[0025] As a further preferred embodiment, the switching valve assembly 33 is a pneumatic three-way valve, installed at the confluence of the brine inlet pipe 31 and the boiling water inlet pipe 32. The dual-feed system needs to achieve precise switching between brine and boiling water to avoid mixing the two media (mixing brine with cold water will lower the sterilization temperature, while mixing with boiling water will dilute the brine). The pneumatic three-way valve is driven by compressed air to operate the valve core, featuring fast response and good sealing performance—the valve core and valve seat fit tightly, effectively blocking media flow and ensuring no crossflow during switching; simultaneously, its operation is controlled by electrical signals from the PLC controller, allowing for precise synchronization with the operation of the feed pump and flushing pump.

[0026] As a further preferred embodiment, the heating tank 1 is provided with a water inlet pipe 13 at the top and a drain pipe 14 at the bottom.

[0027] As a further preferred embodiment, a temperature sensor 12 is provided on the side wall of the heating tank 1, and the temperature sensor 12 is connected to a PLC controller. The temperature sensor monitors the temperature of the water medium in the heating tank in real time and converts the temperature signal into an electrical signal, which is then transmitted to the PLC controller. The PLC controller compares the measured temperature with the set temperature (such as the high temperature required for sterilization). If the temperature is lower than the set value, the electric heater is activated; if it is higher than the set value, the electric heater is deactivated, forming a closed-loop control.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A brine sterilization device, characterized in that, include: The system comprises a heating tank, a heat exchange coil, a dual-feed system, and a control unit. The heating tank has a double-layer insulation structure and an electric heater at the bottom. The heating tank contains water. The heat exchange coil is S-shaped and located inside the heating tank, extending through both ends to the outside. The dual-feed system includes a brine feed pipe, a boiling water feed pipe, and a switching valve assembly. The brine feed pipe is connected to the input end of the heat exchange coil via a feed pump, and the boiling water feed pipe is connected to the input end of the heat exchange coil via a flushing pump. The switching valve assembly enables medium switching. A liquid outlet pump is provided at the output end of the heat exchange coil. The control unit is a PLC controller, electrically connected to the electric heater, feed pump, flushing pump, and switching valve assembly.

2. The brine sterilization device according to claim 1, characterized in that, The heat exchange coil is made of 316 stainless steel, the inner diameter of the heat exchange coil is 30-50mm, and the total length of the heat exchange coil is 6-8m.

3. The brine sterilization device according to claim 1, characterized in that, The switching valve assembly is a pneumatic three-way valve, installed at the junction of the brine inlet pipe and the boiling water inlet pipe.

4. The brine sterilization device according to claim 1, characterized in that, The heating tank is equipped with a water inlet pipe at the top and a drain pipe at the bottom.

5. The brine sterilization device according to claim 1, characterized in that, A temperature sensor is installed on the side wall of the heating tank, and the temperature sensor is connected to a PLC controller.

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