Sleeve type UHT sterilization equipment

Abstract

The utility model discloses a sleeve type UHT sterilization device which comprises a machine frame, a material tank and a material pump, the material tank and the material pump are installed on the machine frame, the input end of the material pump is communicated with the bottom of the material tank, a plurality of transversely-arranged heat exchange pipe sets are installed in the machine frame, and each heat exchange pipe set comprises an outer sleeve, an isolation pipe and an inner pipe. The heat exchange pipe sets are connected in series in an end-to-end mode, the output end of the material pump is connected to the inner cavity of the outer sleeve, a hot water tank, a hot water pump and a heat exchanger are installed on the machine frame, the hot water pump is connected between the hot water tank and the heat exchanger, and the hot water pump is connected between the hot water tank and the heat exchanger. The output end of the heat exchanger is connected to the inner pipe. The equipment is suitable for ultra-high temperature UHT sterilization of liquid materials, the materials are sterilized and cooled by the equipment to achieve the purpose of prolonging the shelf life, and the requirements of users on different processes of sterilization, heat preservation and cooling of the materials can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of food sterilization equipment, in particular to a sleeve-type UHT sterilization equipment. Background Art

[0002] As people's quality of life improves, their demands for food safety are also increasing. Therefore, food companies, driven by food safety concerns, need to sterilize food. Common sterilization methods include ultra-high pressure sterilization (UHP), low-temperature sterilization (LTS), pasteurization, and UHT sterilization. UHT, short for ultra-high temperature sterilization, typically involves heating at temperatures of 125-150°C for 2-8 seconds, achieving commercial sterility. This sterilization method achieves sterilization instantly and effectively. In tube-in-tube UHT sterilization equipment, the material and heat exchange medium flow through different layers of the tube, achieving heat sterilization through heat exchange. However, the heat exchange medium in current tube-in-tube UHT sterilization equipment typically flows through a straight-through process, resulting in low heat exchange efficiency. Utility Model Content

[0003] The purpose of the present invention is to provide a sleeve-type UHT sterilization device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sleeve-type UHT sterilization equipment, comprising a frame, a material tank and a material pump installed thereon, the input end of the material pump being connected to the bottom of the material tank, a plurality of transversely arranged heat exchange tube groups being installed in the frame, the heat exchange tube group comprising an outer sleeve, an isolation tube and an inner tube, the isolation tube being located in the inner cavity of the outer sleeve and being concentric therewith, the inner end of the isolation tube being closed, the inner tube being located in the inner cavity of the isolation tube and being concentric therewith, a spiral blade being provided between the outer side of the inner tube and the isolation tube to form a spiral channel, the outer sleeves being connected in series end to end for circulating the material to be sterilized, the end of the inner tube extending to the bottom of the closed end of the isolation tube, the inner tube and the spiral channel being used for circulating the heat exchange medium, and the output end of the material pump being connected to the inner cavity of the outer sleeve.

[0005] Preferably, a clean water tank and a clean water pump are respectively installed on the frame, the input end of the clean water pump is connected to the clean water tank, and the output end of the clean water pump is connected in parallel with the output end of the material pump.

[0006] Preferably, a hot water tank, a hot water pump and a heat exchanger are respectively installed on the rack, the hot water pump is connected between the hot water tank and the heat exchanger, and the output end of the heat exchanger is connected to the inner pipe.

[0007] Compared with the prior art, the beneficial effect of the present invention is that in the heat exchange tube group, the heat exchange medium is first transported to the bottom of the isolation tube through the inner tube, and then refluxed and output through the spiral channel, increasing the flow path of the heat medium, making the heat exchange more sufficient, which is conducive to improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is a schematic diagram of the cross-sectional structure of the heat exchange tube group.

[0010] In the figure: 1. Frame; 2. Heat exchange tube group; 21. Outer casing; 22. Isolation tube; 23. Inner tube; 3. Clean water tank; 4. Clean water pump; 5. Material pump; 6. Material tank; 7. Hot water tank; 8. Hot water pump; 9. Heat exchanger. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0012] See also Figure 1-2 The utility model provides a technical solution: a sleeve-type UHT sterilization equipment, including a frame 1 and a material tank 6 and a material pump 5 installed thereon. A control cabinet is fixedly installed on the upper side of the frame 1. The input end of the material pump 5 is connected to the bottom of the material tank 6. A plurality of transversely arranged heat exchange tube groups 2 are installed in the frame 1. The heat exchange tube group 2 includes an outer sleeve 21, an isolation tube 22 and an inner tube 23. The isolation tube 22 is located in the inner cavity of the outer sleeve 21 and is concentric with it, and the inner end of the isolation tube 22 is closed. An annular material channel is formed between the outer side of the isolation tube 22 and the inner wall of the outer sleeve 21. The material channel is used to circulate the material to be sterilized.

[0013] The inner tube 23 is located within the inner cavity of the isolation tube 22 and is concentric therewith. A spiral blade is provided between the outer side of the inner tube 23 and the isolation tube 22 to form a spiral channel. The outer tubes 21 are connected end to end in series for circulating the material to be sterilized. The end of the inner tube 23 extends to the bottom of the closed end of the isolation tube 22. The inner tube 23 and the spiral channel are used to circulate a heat exchange medium. The heat medium first flows from the inner tube 23 to the innermost end of the isolation tube 22, and then returns through the spiral channel for output. The spiral channel can extend the heat medium flow path, allowing the heat medium to more fully contact the isolation tube 22, which is beneficial for improving heat exchange efficiency. The output end of the material pump 5 is connected to the inner cavity of the outer tube 21. The heat exchange tube groups 2 are connected end to end in series. The heat exchange tube groups 2 are divided into three groups, respectively used for preheating, sterilization, and cooling. The three heat exchange tube groups 2 circulate different heat exchange media: hot water is used as the heat medium for preheating, high-temperature steam is used as the heat medium for sterilization, and low-temperature water is used as the heat medium for cooling.

[0014] The output end of the material pump 5 is connected to the inner cavity of the outer sleeve 21. The hot water tank 7, the hot water pump 8 and the heat exchanger 9 are respectively installed on the frame 1. The hot water pump 8 is connected between the hot water tank 7 and the heat exchanger 9. The output end of the heat exchanger 9 is connected to the inner tube 23. The clean water tank 3 and the clean water pump 4 are respectively installed on the frame 1. The input end of the clean water pump 4 is connected to the clean water tank 3. The output end of the clean water pump 4 is connected in parallel with the output end of the material pump 5. After sterilization, the clean water pump 4 pumps clean water from the clean water tank 3 to the material channel for cleaning to ensure hygiene and avoid cross contamination between different materials.

[0015] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeve-type UHT sterilization device, comprising a frame (1), a material tank (6) and a material pump (5) mounted thereon, wherein the input end of the material pump (5) is connected to the bottom of the material tank (6), and is characterized in that: A plurality of heat exchange tube groups (2) arranged transversely are installed in the frame (1). The heat exchange tube group (2) includes an outer sleeve (21), an isolation tube (22) and an inner tube (23). The isolation tube (22) is located in the inner cavity of the outer sleeve (21) and is concentric therewith. The inner end of the isolation tube (22) is closed. The inner tube (23) is located in the inner cavity of the isolation tube (22) and is concentric therewith. A spiral blade is provided between the outer side of the inner tube (23) and the isolation tube (22) to form a spiral channel. The outer sleeves (21) are connected in series end to end for circulating the material to be sterilized. The end of the inner tube (23) extends to the bottom of the closed end of the isolation tube (22). The inner tube (23) and the spiral channel are used for circulating the heat exchange medium. The output end of the material pump (5) is connected to the inner cavity of the outer sleeve (21).

2. The sleeve-type UHT sterilization equipment according to claim 1, characterized in that: A clean water tank (3) and a clean water pump (4) are respectively installed on the frame (1); the input end of the clean water pump (4) is connected to the clean water tank (3); and the output end of the clean water pump (4) is connected in parallel with the output end of the material pump (5).

3. The sleeve-type UHT sterilization equipment according to claim 2, characterized in that: A hot water tank (7), a hot water pump (8) and a heat exchanger (9) are respectively installed on the frame (1); the hot water pump (8) is connected between the hot water tank (7) and the heat exchanger (9); and the output end of the heat exchanger (9) is connected to the inner pipe (23).

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