CN215194015U

CN215194015U - Food packaging material surface plasma rapid disinfection device

Info

Publication number: CN215194015U
Application number: CN202120654706.5U
Authority: CN
Inventors: 刘东平; 毕春光; 王茜; 王强; 张志成; 陈佳男; 吴旸; 佟银岭; 李超
Original assignee: Liaoning Chunguang Pharmaceutical Equipment Corp ltd; Dalian University of Technology
Current assignee: Liaoning Chunguang Pharmaceutical Equipment Corp ltd; Dalian University of Technology
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-17
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a quick disinfection device for surface plasma of food packaging materials, which relates to the technical field of disinfection devices and comprises two sub-modules which have the same structure and are arranged along the front and back directions; a gap is reserved between the two sub-modules; the sub-module comprises a fixed seat, a sealing cover, a dielectric plate and a circuit board; one side of the dielectric plate is provided with an electrode material which is electrically connected with a high-voltage power supply, and the other side of the dielectric plate is provided with a ground electrode wire which is electrically connected with the circuit board; the dielectric plate and the circuit board are arranged in the fixing seat, the sealing cover is positioned on one side of the fixing seat far away from the gap, and the ground electrode wire is positioned on one side close to the gap. Can effectively kill bacteria and viruses on the outer surface of the food stalk material at high speed, and has higher efficiency. The required raw materials are water and air, and the raw materials are clean and pollution-free. The flow of water drops is controlled by the peristaltic pump, so that the humidity of the air in the air can be effectively and accurately controlled, and efficient sterilization treatment is realized. The plasma reactor has simple structure and is convenient to install and maintain.

Description

Food packaging material surface plasma rapid disinfection device

Technical Field

The utility model relates to a degassing unit technical field especially relates to a quick degassing unit of food packaging material surface plasma.

Background

China is a large food country, various foods are required to be fully available, people have stronger awareness and requirements on health and food safety along with the development of China and the mature technology and strong scale of the food processing industry, most of the foods purchased on the market are packaged finished products, so the safety problem on the surface of the food outer package also becomes an important problem needing attention and being solved completely, and the detection on the food outer package has very important significance.

In the case of cheese packaging, the cheese packaging includes both a wrapping material outside the cheese and a bar handle, but during the processing of the wrapping material and the bar handle, the wrapping material and the bar handle may contact with the outside and may contact with viruses and bacteria to pollute the food, so that the sterilization of the bacteria and the viruses during the production of the food packaging material is very important.

With the development of plasma technology, the application of plasma technology is increasing. The use of plasma sterilization has raised the global hot tide in the last decade. The sterilization by the plasma technology has very important application value. The sterilization method has the advantages of low cost, simple equipment and high sterilization efficiency, and no secondary pollution is generated after treatment. A series of chemical reactions are accompanied in the plasma generation process, and then active oxygen radicals such as hydroxyl, ozone, nitrogen oxide and the like are generated, and the radicals can be used for inactivating microorganisms and the like on a large area of the surface of the cheese wrapping material.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a quick disinfection device of food packaging material surface plasma for the disinfection to food packaging material.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a quick surface plasma disinfection device for food packaging materials, which comprises two sub-modules which have the same structure and are arranged along the front and back directions; a gap is reserved between the two sub-modules; the sub-module comprises a fixed seat, a sealing cover, a dielectric plate and a circuit board; one side of the dielectric plate is provided with an electrode material which is electrically connected with a high-voltage power supply, the other side of the dielectric plate is provided with a ground electrode wire, and two ends of the ground electrode wire are respectively electrically connected with the circuit board; the dielectric plate and the circuit board are arranged in the fixed seat, the sealing cover is located on one side, away from the gap, of the fixed seat, and the ground electrode wire is located on one side, close to the gap.

Optionally, the electrode material is electrically connected to the high voltage power supply through a high voltage wire.

Optionally, the electrode material is a metal foil.

Optionally, the voltage of the high-voltage power supply is 7-21KV, and the working frequency is 10 KHZ.

Optionally, a slot is arranged on the other side of the dielectric plate, and the ground electrode wire is arranged in the slot.

Optionally, the dielectric plate is an insulating material plate.

Optionally, the dielectric plate is a ceramic plate, a PCB plate, a quartz plate, or polyimide.

Optionally, water tanks are arranged on two sides of the fixed seat, and a water inlet and a water outlet are arranged on each water tank; the water inlet is communicated with a water injection tank, and the water outlet is communicated with a waste water tank; and a pump is arranged between the water injection tank and the water inlet.

Optionally, the water flow speed in the water tank is 20-50 ml/min.

Optionally, a plurality of fans are arranged on the sealing cover.

The utility model discloses for prior art gain following technological effect:

active substances in the plasma are subjected to sterilization treatment based on surface dielectric barrier discharge, and the active substances have strong chemical activity and long half-life period, so that the active substances can carry out biochemical reaction with bacteria, fungi or viruses on the surface of a packaging material to kill the bacteria, fungi or viruses and destroy the integrity of a film of the packaging material so as to destroy the structure of the packaging material, and the generation of active oxygen substances and active nitrogen substances is an important factor required by sterilization; the ground electrode wires are uniformly distributed on the surface of the dielectric plate, and the distance between every two wires is very small, so that large-area uniform discharge can be generated, and the surface temperature is reduced; the fixing mode of the metal wire is that the metal wire is fixed by a PCB (printed Circuit Board) which is arranged at two ends of the metal wire and is parallel to and coplanar with the surface of the dielectric slab, and the metal wire is ensured to be straightened and not to be bent; a little water is introduced into the device, a humid environment is provided for a plasma generation area, air and water molecules are ionized and generate oxidized species such as peroxynitrous acid through a series of chemical reactions, and the surface sterilization efficiency is improved; in addition, the large-area packing material to be processed can be processed in a moving mode in the device, and the front surface and the rear surface of the packing material can be processed.

The device for quickly sterilizing the surface plasma of the food packaging material can effectively sterilize bacteria and viruses on the outer surface of the food handle material at a high speed, and has high sterilizing efficiency. The raw materials required by the plasma reaction device are water and air, and the reaction raw materials are clean and pollution-free. The peristaltic pump is used for controlling the flow of raw material water drops in the reactor, so that the humidity of the air in the reactor can be effectively and accurately controlled, and efficient sterilization treatment is realized. The plasma reactor has simple structure and is convenient to install and maintain.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a dividing module in the surface plasma rapid disinfection device for food packaging materials of the present invention;

FIG. 2 is a schematic view of the inner side structure of the center dividing module in the surface plasma rapid disinfection device for food packaging materials of the present invention;

FIG. 3 is a schematic side view of the surface plasma rapid sterilizer for food packaging material of the present invention;

FIG. 4 is a schematic structural view of an intermediate plate of the surface plasma rapid disinfection device for food packaging materials of the present invention;

FIG. 5 is a schematic structural view of a circuit board in the surface plasma rapid disinfection device for food packaging materials of the present invention;

FIG. 6 is a schematic structural view of a fixing base in the surface plasma rapid disinfection device for food packaging materials of the present invention;

fig. 7 is a data curve diagram of the experimental result of the surface plasma rapid disinfection device for food packaging materials of the present invention.

Description of reference numerals: 1. a fixed seat; 2. a sealing cover; 3. a fan; 4. a circuit board; 5. a dielectric plate; 6. a ground wire electrode; 7. a gap; 8. a water tank; 9. a guide plate fixing groove; 10. a water inlet; 11. and (7) a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 7, the present embodiment provides a surface plasma rapid sterilization device for food packaging materials, which comprises two sub-modules with the same structure and arranged along the front-back direction; a gap 7 is reserved between the two sub-modules; the sub-module comprises a fixed seat 1, a sealing cover 2, a dielectric plate 5 and a circuit board 4; an electrode material is arranged on one side of the dielectric plate 5 and is electrically connected with a high-voltage power supply, a ground electrode wire 6 is arranged on the other side of the dielectric plate 5, and two ends of the ground electrode wire 6 are respectively and electrically connected with the circuit board 4; the dielectric plate 5 and the circuit board 4 are arranged in the fixing seat 1, the sealing cover 2 is located on one side, away from the gap 7, of the fixing seat 1, and the ground wire electrode 6 is located on one side, close to the gap 7.

In this embodiment, the electrode material is electrically connected to the high voltage power source through a high voltage line. The electrode material is copper foil. The voltage of the high-voltage power supply is 7-21KV, and the working frequency is 10 KHZ.

And a slot is arranged on the other side of the dielectric plate 5, and the ground electrode wire 6 is arranged in the slot. The dielectric plate 5 is made of ceramics, the length is 340mm-380mm, the width is 180mm-220mm, the thickness is 2mm, the depth of the dielectric plate 5 is 0.3mm, the width of the dielectric plate is 0.6mm, and the distance between the grooves is 4 mm. The ground electrode wire 6 is made of filiform or reticular steel, tungsten or silver metal and is embedded into the groove of the dielectric plate 5.

The dielectric plate 5 is a ceramic plate.

Water tanks 8 are arranged on two sides of the fixed seat 1, and a water inlet 10 and a water outlet 11 are arranged on each water tank 8; the water inlet 10 is communicated with a water injection tank, and the water outlet 11 is communicated with a waste water tank; a peristaltic pump is arranged between the water inlet 10 and the water injection tank, and the water flow speed between the water injection tank and the water inlet tank 8 is 20-50 ml/min.

The sealing cover 2 is provided with a plurality of fans 3, and the fans 3 can be arranged on two sides of the sealing cover 2 and also can be positioned on the end face of the sealing cover 2. The fan 3 is fixed on the sealing cover 2 through a stainless steel or aluminum alloy bracket.

The sealing cover 2 and the fixed seat 1 are made of aluminum alloy.

In the using process, the treatment material freely falls from top to bottom through gravity, the power supply outputs voltage of 7-21kV, the discharge frequency is 10kHz, plasma is generated at the positions of the ground electrode wire 6 and the dielectric plate 5, the space temperature of the plasma reactor is high, so that water drops in the water tank 8 are volatilized to generate a humid air environment, and the rapid disinfection and killing of bacteria and viruses on the surface of the stem material can be realized in a short time by generating the plasma through discharge in the humid air environment. In addition, in the use process of the reactor, a user needs to electrify the fan to realize the heat dissipation on the high-voltage electrode and the medium plate 5.

The surface plasma rapid sterilization device for food packaging material in the present embodiment will be described in detail with reference to the accompanying drawings and more specific embodiments.

The first embodiment is as follows:

the method for quickly disinfecting the surface plasma of the cheese wrapping material comprises the following specific processes:

the high-voltage wire led out from the inside of the device is connected with a high-voltage power supply, the device is grounded, water in the water injection tank flows into the device through a water pipe, the flow rate of the water entering the device is controlled by adjusting the peristaltic pump, the fan 3 runs normally, the high-voltage power supply is started, and the device is preheated for 1 minute; the packing material to be processed is sent into the device from the upper side of the device, namely a micro gap 7 reserved between the fixed seats 1, the automatic machine drags the packing material to carry out front and back surface processing, and the packing material is sent out from an outlet at the bottom of the device after 10 seconds of post-processing.

Example two:

the prepared ten groups contain Escherichia coli1x1cm²The fungus flakes are placed on the ground electrode wire 6 to be directly contacted with plasma for treatment: the first group of bacterial slices are processed under the condition that the applied voltage is 7 kV; the second group of bacterial pieces are processed under the condition that the applied voltage is 9 kV; the third group of the bacterial pieces is processed under the condition that the applied voltage is 11 kV; the fourth bacterial piece is processed under the condition that the applied voltage is 13 kV; the fifth group of the bacterial pieces are processed under the condition that the applied voltage is 15 kV; the sixth group of bacterial pieces is processed under the condition that the applied voltage is 17 kV; the seventh group of discs were treated with an applied voltage of 19 kV; the eighth group of bacterial pellet is processed under the condition that the applied voltage is 20 kV; the ninth group of bacterial pieces are processed under the condition that the applied voltage is 21 kV; the tenth group of discs served as control group and were not treated at all. Each set of slides was removed after 10s of plasma treatment and placed in a centrifuge tube containing 2mL of sterile water to rinse the slides from the bacteria. Finally, 300 μ L of liquid is taken out from each group of 2mL of bacterial liquid, coated on the culture medium, and placed in an incubator for overnight culture, and then observed, as shown in fig. 7, when the applied voltage is 13kV, the logarithmic decrement value of the bacterial content on the plasma-treated bacterial sheet is maximized, it can be seen that the plasma generated by creeping discharge in the humid air can efficiently inactivate the surface bacteria in a short time, and the effect is more obvious the higher the applied voltage is.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A fast plasma sterilizing device for the surface of food packaging material is characterized by comprising two sub-modules which have the same structure and are arranged along the front and back direction; a gap is reserved between the two sub-modules; the sub-module comprises a fixed seat, a sealing cover, a dielectric plate and a circuit board; one side of the dielectric plate is provided with an electrode material which is electrically connected with a high-voltage power supply, the other side of the dielectric plate is provided with a ground electrode wire, and two ends of the ground electrode wire are respectively electrically connected with one circuit board; the dielectric plate and the circuit board are arranged in the fixed seat, the sealing cover is located on one side, away from the gap, of the fixed seat, and the ground electrode wire is located on one side, close to the gap.

2. The device for surface plasma rapid sterilization of food packaging material according to claim 1, wherein the electrode material is electrically connected to the high voltage power supply through a high voltage wire.

3. A surface plasma rapid sterilization device of food packaging material according to claim 1, characterized in that the electrode material is a metal foil.

4. The device for the rapid surface plasma sterilization of food packaging materials according to claim 1, wherein the high voltage power supply has a voltage of 7-21KV and a working frequency of 10 KHZ.

5. The device for the rapid surface plasma sterilization of food packaging materials as claimed in claim 1, wherein a slot is provided on the other side of the dielectric plate, and the ground electrode wire is disposed in the slot.

6. A surface plasma rapid sterilization device for food packaging material according to claim 1, characterized in that the dielectric sheet is a dielectric material sheet.

7. The device for the surface plasma rapid disinfection of food packaging material according to claim 1, characterized in that the medium plate is a ceramic plate, a PCB plate, a quartz plate or polyimide.

8. The device for rapidly sterilizing the surface of the food packaging material by plasma as claimed in claim 1, wherein water tanks are arranged on two sides of the fixed seat, and a water inlet and a water outlet are arranged on the water tanks; the water inlet is communicated with a water injection tank, and the water outlet is communicated with a waste water tank; and a pump is arranged between the water injection tank and the water inlet.

9. The surface plasma rapid sterilization device of food packaging material according to claim 8, characterized in that the water flow speed in the water tank is 20-50 ml/min.

10. The surface plasma rapid sterilization device for food packaging material according to claim 1, wherein a plurality of fans are provided on the sealing cover.