A high-voltage pulsed electric field sterilization device for liquid food

Abstract

This invention belongs to the field of liquid food sterilization technology, and particularly relates to a high-voltage pulsed electric field sterilization device for liquid food. It includes a main body, a high-voltage electrode plate, a grounding electrode plate, and a guide tube. The main body has a first cavity, a cooling cavity, and a second cavity. The upper end of the first cavity and the lower end of the second cavity are open. The high-voltage electrode plate is located at the opening of the first cavity; the grounding electrode plate is located at the opening of the second cavity. The guide tube is vertically arranged in the cooling cavity, with its upper and lower ends penetrating the cooling cavity to connect the first and second cavities. The side wall of the main body has an inlet and an outlet communicating with the cooling cavity, a feed inlet communicating with the first cavity, and a discharge inlet communicating with the second cavity. This invention uses a pulsed electric field generated by the high-voltage electrode to disinfect and sterilize liquid food; the cooling cavity cools the food, preventing heat damage and ensuring the quality of the liquid food.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid food sterilization devices, and particularly relates to a high-voltage pulse electric field sterilization device for liquid food. Background Technology

[0002] High-voltage pulsed electric field technology involves placing liquid food between two electrodes and applying a voltage higher than the critical transmembrane potential of the cell, causing irreversible electroporation to achieve cell inactivation or substance dissolution. As one of the most advanced non-thermal processing technologies internationally, high-voltage pulsed electric field technology can better preserve the inherent nutrients, texture, color, and freshness of food compared to traditional heat treatment methods. However, some sensitive liquid foods, such as milk and fruit juice, are easily affected by external temperatures during processing, leading to changes in taste or nutritional components and affecting their usability. Utility Model Content

[0003] The purpose of this invention is to provide a high-voltage pulse electric field sterilization device for liquid food that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides a high-voltage pulsed electric field sterilization device for liquid food, comprising: The main body has a first cavity, a cooling cavity, and a second cavity arranged sequentially from top to bottom. The upper end of the first cavity and the lower end of the second cavity are open. The side wall of the main body has a water inlet and a water outlet communicating with the cooling cavity, a feed inlet communicating with the first cavity, and a discharge inlet communicating with the second cavity. A high-voltage electrode plate is disposed at the opening of the first cavity and can seal the opening of the first cavity, and is used to generate an electric field to disinfect and sterilize the liquid food in the first cavity. A grounding electrode plate is disposed at the opening of the second cavity and is capable of sealing the opening of the second cavity; and A guide pipe is vertically installed in the cooling cavity, with its upper and lower ends penetrating the cooling cavity to connect the first cavity and the second cavity.

[0005] Optionally, the first mounting plate, the annular connecting wall, and the permanent magnet are provided. The annular connecting wall is disposed at the lower end of the grounding electrode, and the first mounting plate is disposed at the lower end of the annular connecting wall. The first mounting plate is provided with a plurality of mounting slots corresponding to the grounding electrode. The permanent magnet is installed in the mounting slots and forms a space with the grounding electrode.

[0006] Optionally, multiple guide tubes are evenly distributed, and gaps are formed between the guide tubes.

[0007] Optionally, the body includes a first annular wall, a second mounting plate that closes the lower end opening of the first annular wall is provided at the lower end of the first annular wall, the high-voltage electrode sheet is provided at the upper end of the first annular wall, the high-voltage electrode sheet, the first annular wall and the second mounting plate form the first cavity, the upper end of the guide tube passes through the second mounting plate, and the feed port is opened on the side wall of the first annular wall.

[0008] Optionally, the upper edge of the first annular wall extends outward horizontally to form a brim, and an annular insulating pad is provided at the upper end of the brim, with the high-voltage electrode plate clamped on the inner sidewall of the annular insulating pad.

[0009] Optionally, a clamping plate is also provided at the upper end of the high-voltage electrode sheet, and the clamping plate abuts against the upper end of the annular insulating pad.

[0010] Optionally, the body further includes a second annular wall disposed at the lower end of the second mounting plate, and a third mounting plate is disposed at the lower end of the second annular wall to close its lower opening. The second mounting plate, the second annular wall, and the third mounting plate form the cooling cavity. The lower end of the guide pipe passes through the third mounting plate, and the water inlet and the water outlet are opened on the side wall of the second annular wall.

[0011] Optionally, the body further includes a third annular wall, which is disposed at the lower end of the third mounting plate, and the grounding electrode is disposed at the lower end of the third annular wall. The third mounting plate, the third annular wall, and the grounding electrode form the second cavity, and the discharge port is opened on the side wall of the third annular wall.

[0012] Compared with the prior art, the beneficial effects of this utility model are: to disinfect and sterilize the liquid food in the first cavity by generating a pulsed electric field through a high-voltage electrode; and to cool down the liquid food in the first cavity, the guide pipe and the second cavity by setting a cooling cavity, so as to prevent the liquid food from being damaged by heat, which would cause changes in taste or nutritional components and affect the quality of the liquid food. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a top view of the present invention.

[0015] Figure 2 For along Figure 1 Sectional view along line AA in the middle.

[0016] Figure 3 This is a schematic diagram of the structure of the second annular wall and the guide tube in this utility model.

[0017] Figure 4 This is a perspective view of the first mounting plate in this utility model.

[0018] In the picture: 100. Body; 110. First annular wall; 111. First cavity; 112. Water inlet; 113. Water outlet; 114. Feed inlet; 115. Cap brim; 116. Annular insulating pad; 117. Clamping plate; 120. Second mounting plate; 130. Second annular wall; 140. Third mounting plate; 141. Cooling cavity; 150. Third annular wall; 151. Second cavity; 152. Discharge outlet; 200. High-voltage electrode sheet; 300. Grounding electrode plate; 400. Drainage tube; 500. First mounting plate; 510. Mounting slot; 600. Annular connecting wall; 700. Permanent magnet. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the embodiments of this utility model, it should be understood that if the embodiments of this utility model involve directional indications, such as up, down, left, right, front, back, inside, outside, etc., the orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a structure. They can be mechanical or electrical connections. They can be direct connections or indirect connections through an intermediate medium, and can represent the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, this utility model embodiment provides a high-voltage pulse electric field sterilization treatment device for liquid food, including a body 100, a high-voltage electrode plate 200, a grounding electrode plate 300, a flow guide tube 400, a first mounting plate 500, an annular connecting wall 600, and a permanent magnet 700.

[0024] The main body 100 is provided with a first cavity 111, a cooling cavity 141 and a second cavity 151 arranged sequentially from top to bottom. The upper end of the first cavity 111 and the lower end of the second cavity 151 are open. A high-voltage electrode plate 200 is disposed at the opening of the first cavity 111 and can close the opening of the first cavity 111. A grounding electrode plate 300 is disposed at the opening of the second cavity 151 and can close the opening of the second cavity 151. A guide pipe 400 is vertically disposed in the cooling cavity 141 and its upper and lower ends pass through the cooling cavity 141 respectively to connect the first cavity 111 and the second cavity 151. The side wall of the main body 100 is provided with a water inlet 112 and a water outlet 113 communicating with the cooling cavity 141, a feed inlet 114 communicating with the first cavity 111 and a discharge outlet 152 communicating with the second cavity 151.

[0025] Specifically, the body 100 includes a first annular wall 110, wherein a second mounting plate 120 is provided at the lower end of the first annular wall 110 to close its lower opening, the second mounting plate 120 is welded to the lower end of the first annular wall 110, a high-voltage electrode 200 is provided at the upper end of the first annular wall 110, the high-voltage electrode 200, the first annular wall 110 and the second mounting plate 120 form a first cavity 111, the upper end of the guide tube 400 passes through the second mounting plate 120, and the feed port 114 is opened on the side wall of the first annular wall 110.

[0026] The main body 100 also includes a second annular wall 130 disposed at the lower end of the second mounting plate 120. A third mounting plate 140 is disposed at the lower end of the second annular wall 130 to close its lower opening. The third mounting plate 140 is welded to the lower end of the second annular wall 130. The second annular wall 130 is welded to the second mounting plate 120. The second mounting plate 120, the second annular wall 130 and the third mounting plate 140 form a cooling chamber 141. The lower end of the guide pipe 400 passes through the third mounting plate 140. The water inlet 112 and the water outlet 113 are opened on the side wall of the second annular wall 130. Specifically, the water inlet 112 is disposed near the upper end of the second annular wall 130 and the water outlet 113 is disposed near the lower end of the second annular wall 130, thereby improving the water inlet and outlet efficiency and thus improving the cooling efficiency. Furthermore, the two ends of the guide pipe 400 are connected to the second mounting plate 120 and the third mounting plate 140 by welding.

[0027] The main body 100 also includes a third annular wall 150, which is disposed at the lower end of the third mounting plate 140. The upper end of the third annular wall 150 is welded to the third mounting plate 140. The grounding electrode 300 is disposed at the lower end of the third annular wall 150. The two are connected by welding. The third mounting plate 140, the third annular wall 150 and the grounding electrode form a second cavity 151. The discharge port 152 is opened on the side wall of the third annular wall 150 to facilitate the processing and assembly of the processing device.

[0028] During operation, the liquid food first enters the first cavity 111 through the feed inlet 114. The high-voltage electrode 200 generates a pulsed electric field to disinfect and sterilize the liquid food in the first cavity 111. The grounding electrode 300, together with the high-voltage electrode 200, forms an electric field circuit to ensure the smooth progress of the electric field disinfection and sterilization process, effectively killing harmful microorganisms in the liquid food. The liquid food then enters the second cavity 151 through the guide pipe 400 and is discharged from the outlet 152.

[0029] The cooling chamber 141 is designed to cool down the liquid food in the first chamber 111, the guide pipe 400, and the second chamber 151 to prevent the liquid food from being damaged by heat, which could cause changes in taste or nutritional components and affect the quality of the liquid food. Specifically, cold water enters the cold water chamber through the inlet 112 to absorb the temperature of the liquid food in the first chamber 111, the guide pipe 400, and the second chamber 151, and is then discharged from the outlet 113.

[0030] In one embodiment, an annular connecting wall 600 is disposed at the lower end of the grounding electrode, and a first mounting plate 500 is disposed at the lower end of the annular connecting wall 600. The first mounting plate 500 is provided with a plurality of mounting slots 510 corresponding to the grounding electrode. The permanent magnet 700 is installed in the mounting slots 510 and forms a space with the grounding electrode. The magnetic field formed by the permanent magnet 700 can make the electric field distribution more uniform and improve the disinfection and sterilization efficiency of the electric field.

[0031] In one embodiment, multiple guide tubes 400 are evenly distributed and gaps are formed between the guide tubes 400, thereby improving heat exchange efficiency and material guiding efficiency, thus improving work efficiency.

[0032] In one embodiment, the upper edge of the first annular wall 110 extends outward horizontally to form a brim 115. An annular insulating pad 116 is provided at the upper end of the brim 115. The high-voltage electrode plate 200 is clamped on the inner sidewall of the annular insulating pad 116. A clamping plate 117 is also provided at the upper end of the high-voltage electrode plate 200. The clamping plate 117 abuts against the upper end of the annular insulating pad 116. Specifically, the brim 115, the annular insulating pad 116 and the clamping plate 117 are connected by bolts (not shown in the figure). Specifically, the bolts pass through the clamping plate 117, the annular insulating pad 116 and the brim 115 from top to bottom to clamp the annular insulating pad 116. This makes disassembly and assembly convenient and facilitates subsequent maintenance and replacement.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-voltage pulsed electric field sterilization device for liquid food, characterized in that, include: The main body has a first cavity, a cooling cavity, and a second cavity arranged sequentially from top to bottom. The upper end of the first cavity and the lower end of the second cavity are open. The side wall of the main body has a water inlet and a water outlet communicating with the cooling cavity, a feed inlet communicating with the first cavity, and a discharge inlet communicating with the second cavity. A high-voltage electrode sheet is disposed at the opening of the first cavity and is capable of sealing the opening of the first cavity; A grounding electrode plate is disposed at the opening of the second cavity and is capable of sealing the opening of the second cavity; as well as A guide pipe is vertically installed in the cooling cavity, with its upper and lower ends penetrating the cooling cavity to connect the first cavity and the second cavity.

2. The high-voltage pulse electric field sterilization device for liquid food according to claim 1, characterized in that, Also includes: The system comprises a first mounting plate, an annular connecting wall, and a permanent magnet. The annular connecting wall is disposed at the lower end of the grounding electrode, and the first mounting plate is disposed at the lower end of the annular connecting wall. The first mounting plate is provided with a plurality of mounting slots corresponding to the grounding electrode. The permanent magnet is installed in the mounting slots and forms a space with the grounding electrode.

3. The high-voltage pulse electric field sterilization device for liquid food according to claim 1, characterized in that, The guide tubes are evenly distributed in multiples, and gaps are formed between the guide tubes.

4. The high-voltage pulse electric field sterilization device for liquid food according to claim 1, characterized in that, The body includes a first annular wall, a second mounting plate that closes the lower end opening of the first annular wall, a high-voltage electrode plate that is disposed at the upper end of the first annular wall, the high-voltage electrode plate, the first annular wall and the second mounting plate forming the first cavity, the upper end of the guide tube penetrating the second mounting plate, and the feed inlet being opened on the side wall of the first annular wall.

5. A high-voltage pulsed electric field sterilization device for liquid food according to claim 4, characterized in that, The upper edge of the first annular wall extends outward horizontally to form a brim, and an annular insulating pad is provided at the upper end of the brim. The high-voltage electrode sheet is clamped on the inner side wall of the annular insulating pad.

6. The high-voltage pulse electric field sterilization device for liquid food according to claim 5, characterized in that, The upper end of the high-voltage electrode sheet is also provided with a clamping plate, which abuts against the upper end of the annular insulating pad.

7. The high-voltage pulse electric field sterilization device for liquid food according to claim 4, characterized in that, The main body also includes a second annular wall disposed at the lower end of the second mounting plate, and a third mounting plate is disposed at the lower end of the second annular wall to close its lower opening. The second mounting plate, the second annular wall and the third mounting plate form the cooling cavity. The lower end of the guide pipe passes through the third mounting plate. The water inlet and the water outlet are opened on the side wall of the second annular wall.

8. A high-voltage pulse electric field sterilization device for liquid food according to claim 7, characterized in that, The body also includes a third annular wall, which is disposed at the lower end of the third mounting plate. The grounding electrode is disposed at the lower end of the third annular wall. The third mounting plate, the third annular wall, and the grounding electrode form the second cavity. The discharge port is opened on the side wall of the third annular wall.

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