CN113479418B - Food outer package disinfection method and device based on combination of jet flow and coating - Google Patents
Food outer package disinfection method and device based on combination of jet flow and coating Download PDFInfo
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- CN113479418B CN113479418B CN202110828633.1A CN202110828633A CN113479418B CN 113479418 B CN113479418 B CN 113479418B CN 202110828633 A CN202110828633 A CN 202110828633A CN 113479418 B CN113479418 B CN 113479418B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
- B65B55/02—Sterilising, e.g. of complete packages
- B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
- B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases
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Abstract
The invention discloses a method and a device for disinfecting food outer packages based on combination of jet flow and coating, which can be used for killing pathogenic microorganisms on the outer surfaces of food packing cases and can also be used for killing pathogenic microorganisms on the outer surfaces of other packing cases. The sterilization method comprises the steps of firstly coating chemical disinfectant to sterilize pathogenic microorganisms on the bottom surface of the packaging box, and then sterilizing the top surface and the side surface of the packaging box by means of low-temperature plasma jet with atmospheric pressure. Correspondingly, the sterilizing device is composed of a chemical sterilizing unit and a low-temperature plasma jet sterilizing unit. Wherein, the chemical disinfection unit comprises a conveying roller partially soaked in the chemical disinfection solution and a disinfection solution storage container. The low-temperature plasma jet disinfection unit consists of a channel type low-temperature plasma disinfection machine, a transmission mechanism, an external high-voltage power supply and gas supply equipment.
Description
Technical Field
The invention relates to the technical field of sterilization of food outer packages, in particular to a method and a device for sterilizing food outer packages by combining a jet unit utilizing atmospheric pressure low-temperature plasma and a coating unit utilizing chemical disinfectant.
Background
For the sterilization of food outer packages, the influence on the food quality and the package appearance needs to be avoided. The particularity of the food excludes heat sterilization means based on dry heat, steam and the like; the problems of waste liquid generation, residual secondary pollution, influence on food quality and the like exist when chemical reagents (ethylene oxide and hydrogen peroxide) are improperly killed or excessively used; the ultraviolet radiation killing distance is short, obvious thermal effect can be generated, and the far-distance killing performance can not meet the requirement. Therefore, new sterilization techniques and equipment are needed. The low-temperature plasma sterilization is a new non-thermal sterilization technology, has the advantages of rapidness (second level), high efficiency, low energy consumption, low thermal effect, controllable secondary hazard and the like, and is widely applied to industries such as pathogenic microorganism sterilization, clinical medical treatment and the like of medical instruments, fruits, vegetables and other articles. However, for food outer packaging, a sterilization method with low-temperature plasma as the main part and chemical disinfectant as the auxiliary part is adopted, so that no dead angle is left on the outer surface of the package, and no relevant report is found.
Disclosure of Invention
On the basis of analyzing the specific requirements of food logistics and outer package disinfection, the invention combines the research of low-temperature plasma and chemical disinfection and the engineering application result, and provides a method and a device for killing food outer package viruses and bacteria by mainly using atmospheric pressure low-temperature plasma jet disinfection and assisting chemical disinfection liquid in disinfection, so that the method and the device are suitable for killing pathogenic microorganisms in food packages, have no dead angle and apply the chemical disinfection liquid as little as possible, and avoid the requirement of influencing the food quality.
The invention relates to a food outer package disinfection device based on combination of jet flow and coating, which consists of a packing box transmission unit (2), an image and positioning acquisition unit (3), a chemical disinfectant coating unit (4) and an atmospheric pressure low-temperature plasma jet flow unit (5);
the packaging box transmission unit (2) is a mechanism for pushing and conveying the outer food packaging box (1) along the X-axis direction; the packaging box conveying unit (2) at least comprises a first-stage conveyor belt conveying unit (7) and a second-stage conveyor belt conveying unit (6), and the first-stage conveyor belt conveying unit (7) and the second-stage conveyor belt conveying unit (6) are identical in structure; the first-stage conveyor belt transmission unit (7) is arranged in front of the coating unit (4) of the chemical disinfection solution; the second-stage conveyor belt transmission unit (6) is arranged behind the coating unit (4) of the chemical disinfection solution, and a jet unit (5) of atmospheric pressure low-temperature plasma is arranged above the second-stage conveyor belt transmission unit (6);
the first-stage conveyor belt transmission unit (7) comprises a first motor, a first working belt, a driving transmission wheel (7A), a driven transmission wheel (7B) and a transmission bracket (7C); a driving transmission wheel (7A) is mounted on an output shaft of the first motor, a first working belt is movably sleeved between the driving transmission wheel (7A) and the driven transmission wheels (7B), and the driving transmission wheel (7A) and the driven transmission wheels (7B) are mounted on a transmission bracket (7C); the driving transmission wheel (7A) is driven to rotate under the driving of the first motor, so that the first working belt is driven to rotate, the driven transmission wheels (7B) are driven to move along by the rotation of the first working belt, and the food outer packing box (1) is conveyed to an inlet of a chemical disinfectant coating unit (4);
the second-stage conveyor belt transmission unit (6) comprises a second motor, a second working belt, a driving transmission wheel (6A), a driven transmission wheel (6B) and a transmission bracket (6C); a driving transmission wheel (6A) is mounted on an output shaft of the second motor, a second working belt is movably sleeved between the driving transmission wheel (6A) and the driven transmission wheels (6B), and the driving transmission wheel (6A) and the driven transmission wheels (6B) are mounted on a transmission bracket (6C); under the drive of a second motor, a driving transmission wheel (6A) is driven to rotate, a second working belt is further driven to rotate, a plurality of driven transmission wheels (6B) are driven to move along by the rotation of the second working belt, and the outer food packing box (1) treated by the chemical disinfectant coating unit (4) is transported by a second-stage conveyor belt transmission unit (6);
the image and positioning acquisition unit (3) consists of a camera (3A) and a range finder (3B); the camera is used for collecting image information of the outer food packaging box (1); the distance measuring instrument (3B) is used for collecting the working position information of the outer food packing box (1) on the working belt;
the coating unit (4) of the chemical disinfectant comprises a first dipping roller driving motor, a second dipping roller driving motor, a first dipping roller (4A), a second dipping roller (4B) and a chemical disinfectant storage container (4C);
a DA coupling is arranged on an output shaft of the first medicine dipping roller driving motor, and the other end of the DA coupling is arranged at the end part of the left end of the first medicine dipping roller (4A);
a DB coupling is arranged on an output shaft of the second medicine dipping roller driving motor, and the other end of the DB coupling is arranged at the end part of the left end of the second medicine dipping roller (4B);
the chemical disinfection liquid storage container (4C) is used for placing chemical disinfection liquid; on the other hand, the first medicine dipping roller (4A) and the second medicine dipping roller (4B) are arranged and supported;
a DA bearing mounting hole (4C1) and a DC bearing mounting hole (4C3) are formed in one side panel of the chemical disinfectant storage container (4C); a DA deep groove ball bearing (4A1) is arranged in the DA bearing mounting hole (4C1), and the DA deep groove ball bearing (4A1) is sleeved at the right end of the first medicine dipping roller (4A); a DC deep groove ball bearing (4A3) is arranged in the DC bearing mounting hole (4C3), and the DC deep groove ball bearing (4A3) is sleeved at the right end of the second medicine dipping roller (4B);
a DB bearing mounting hole (4C2) and a DD bearing mounting hole (4C4) are arranged on the other side panel of the chemical disinfectant storage container (4C); a DB deep groove ball bearing (4A2) is installed in the DB bearing installation hole (4C2), the DB deep groove ball bearing (4A2) is sleeved at the left end of the first dipping roller (4A), and the end part of the left end of the first dipping roller (4A) is installed with an output shaft of a first dipping roller driving motor through a coupler, so that the first dipping roller driving motor drives the first dipping roller (4A) to rotate; a DD deep groove ball bearing (4A4) is installed in the DD bearing installation hole (4C4), the DD deep groove ball bearing (4A4) is sleeved at the left end of the second medicine dipping roller (4B), and the end part of the left end of the second medicine dipping roller (4B) is installed with an output shaft of a second medicine dipping roller driving motor through a coupler, so that the second medicine dipping roller driving motor drives the second medicine dipping roller (4B) to rotate;
the jet unit (5) of the atmospheric pressure low-temperature plasma comprises an external high-voltage power supply, an external gas source supply device, a jet upper frame (5A), a jet right frame (5B), a jet left frame (5C) and an atmospheric pressure low-temperature plasma jet integration module (5D); the structure of the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are the same, and the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are built into a channel structure; an atmospheric pressure low-temperature plasma jet integration module (5D) is arranged in each grid of the jet framework;
a plurality of grids (5C1) are arranged on the jet flow left frame (5C), and the grids (5C1) are used for installing an atmospheric pressure low-temperature plasma jet flow integration module (5D);
the atmospheric pressure low-temperature plasma jet integrated module (5D) is formed by arraying a plurality of dielectric barrier discharge reactors (51) in a jet box shell (5D 1);
the dielectric barrier discharge reactor (51) comprises a tungsten steel solid iron bar (51A), a quartz tube (51B), a grounding copper tube (51C) and a fixed iron sheet (51D); the tungsten steel solid iron bar (51A) is connected with an external high-voltage power supply through a cable; a tungsten steel solid iron bar (51A) is used as a metal discharge electrode; the grounding copper pipe (51C) is used as a metal grounding electrode; the discharge electrode is arranged at the center of the quartz tube (51B), the grounding electrode is tightly attached to the outer surface of the quartz tube (51B), and airflow passes through a spacing cavity (51E) between the inner wall of the quartz tube and the discharge electrode;
the quartz tube (51B) is provided with a gas source through hole (51B1) and an EA central through hole (51B 2); the air source through hole (51B1) is used for being communicated with an external air source supply device through a hose; the EA central through hole (51B2) is used for placing a tungsten steel solid iron bar (51A), and a spacing cavity (51E) is arranged between the tungsten steel solid iron bar (51A) and the quartz tube (51B); the spacing cavity (51E) is used for conveying a gas source;
an EB center through hole (51C1) is arranged on the grounding copper pipe (51C); the EB center through hole (51C1) is used for placing the quartz tube (51B), and the outer wall of the quartz tube (51B) is jointed and sleeved with the inner wall of the grounding copper tube (51C);
an EC center through hole (51D1) is arranged on the fixed iron sheet (51D); the EC center through hole (51D1) is used for one end of the tungsten steel solid iron rod (51A) to pass through.
Compared with the traditional method, the disinfection method and the disinfection device which combine the low-temperature plasma and the chemical decontamination liquid have the following beneficial effects:
1. pathogenic microorganism capable of disinfecting outer surface of packaging box in all-around dead-corner-free manner
The bottom surface of the packing box is basically flat under the action of the gravity of the articles in the box. The idler wheel with the brush can ensure that pathogenic microorganisms on the bottom surface of the packaging box can be eliminated and killed without dead angles; for the top surface and the side surface of the packing box, the distance between the jet module and the packing box can be reduced as far as possible by virtue of the regulating mechanism of the distance between the jet module and the packing box, and the flowing characteristic of low-temperature plasma jet is utilized to ensure that pathogenic microorganisms on the top surface and the side surface can be killed and eliminated without dead angles.
2. Can apply chemical disinfectant as little as possible to avoid food quality damage
The traditional chemical disinfection liquid atomization disinfection can realize the omnibearing dead-angle-free disinfection of the outer surface of the packaging box. However, due to the large amount of disinfectant, the atomized disinfectant enters the interior of the packaging box and directly contacts the food, which inevitably results in the quality of the food being damaged. The chemical disinfectant is only coated on the bottom surface of the packing box to kill pathogenic microorganisms on the bottom surface, and the chemical disinfectant is not used at all for killing the top surface and the side surfaces of the packing box. Therefore, on one hand, the application amount of the chemical disinfection solution can be obviously reduced, and the residual pollution of the chemical disinfection solution caused by excessive application can be prevented. On the other hand, the chemical disinfectant does not need to be atomized to coat the packaging box, so that the atomized disinfectant can be prevented from permeating into the packaging box.
Drawings
Fig. 1 is a functional block diagram of the sterilization device for the outer packages of food based on the combination of jet flow and coating.
Fig. 2 is a block diagram of the sterilization apparatus for food external packages according to the present invention based on a combination of a jet flow and coating.
Fig. 2A is another perspective view of the sterilizer of the exterior package of food based on the combination of jet flow and coating according to the present invention.
FIG. 3 is an exploded view showing the structure of a sterilizing liquid applying unit according to the present invention.
Fig. 4 is a structural view of a jet unit of atmospheric pressure low temperature plasma in the present invention.
Fig. 4A is a structural view of a fluidic frame in a fluidic unit of the atmospheric pressure low-temperature plasma of the present invention.
Fig. 4B is a box-like structure diagram of a jet unit of the atmospheric pressure low temperature plasma in the present invention.
FIG. 5 is a structural diagram of an atmospheric pressure low temperature plasma jet integration module according to the present invention.
FIG. 5A is a structural diagram of a dielectric barrier discharge reactor in an atmospheric pressure low temperature plasma jet integrated module according to the present invention.
Fig. 5B is a cross-sectional view of fig. 5A.
Fig. 5C is an exploded view of fig. 5A.
Fig. 6 is a structural view of the folding sterilizer of the present invention.
Fig. 6A is a structural view of the folding sterilizer without the outer case installed.
FIG. 6B is a schematic diagram of a gas purification unit according to the present invention.
Fig. 6C is a cross-sectional view of fig. 6B.
FIG. 7 is a comparison chart of Escherichia coli treated by the folding sterilizer of the present invention.
FIG. 8 is a comparison between the golden staphylococcal colonies before and after treatment with the foldable sterilizing device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, 2 and 2A, the invention relates to a food outer package sterilization device by combining a jet unit utilizing atmospheric pressure low-temperature plasma and a coating unit utilizing chemical disinfectant, which comprises a packing box transmission unit 2, an image and positioning acquisition unit 3, a chemical disinfectant coating unit 4 and a jet unit 5 utilizing atmospheric pressure low-temperature plasma. The invention can be used for killing pathogenic microorganisms on the outer surface of the food packaging box and can also be used for killing pathogenic microorganisms on the outer surfaces of other packaging boxes.
The sterilization method of the food outer package sterilization device provided by the invention is characterized in that the sterilization method is firstly carried out by coating chemical disinfection liquid to sterilize pathogenic microorganisms on the bottom panel of the packaging box, and then the sterilization method is carried out in five directions of the upper panel, the front panel, the rear panel, the left panel and the right panel of the packaging box by using electron beams of atmospheric pressure low-temperature plasma jet flow.
The food outer package disinfection method combining the atmospheric pressure low-temperature plasma jet flow and the chemical disinfectant coating is realized by the following ways:
the sterilizing device consists of a low-temperature plasma jet sterilizing unit and a chemical sterilizing unit. Wherein, the low-temperature plasma jet disinfection unit consists of a channel type disinfection machine and an external gas supply device. The chemical disinfectant disinfection unit consists of a conveying roller and a disinfectant storage container, wherein the conveying roller is partially soaked in disinfectant. During the disinfection operation, the packaging box is firstly conveyed to the liquid venom disinfection unit close to the inlet of the channel type disinfection machine by the conveying roller, and the bottom surface of the packaging box is disinfected. The method specifically comprises the steps that the roller is firstly rotated and immersed in a container filled with chemical disinfectant and adhered with the disinfectant, then the disinfectant adhered to the surface of the roller is coated on the bottom surface of the packaging box by utilizing the opportunity that the roller is rotated to be in contact with the bottom surface of the packaging box, and the operation is repeated in such a circulating way, so that the bottom panel disinfection treatment of all the packaging boxes passing through the disinfection device is realized. Compromise the demand of packing box bottom disinfection and reduction antiseptic solution natural volatilization, gyro wheel width size design is 600mm, can handle the packing box that the maximum width is 600 mm. Meanwhile, one side of the roller is provided with a limiting cover plate, and when the width of the packing box is smaller than 600mm, the limiting cover plate plays a dual role in guiding the packing box to enter a disinfection area and reducing natural volatilization of disinfectant.
The package leaving the chemical sterilizing liquid sterilizing unit is conveyed to a low-temperature plasma jet sterilizer for sterilizing the top and side surfaces of the package. The method comprises the following steps of firstly detecting the distances between the jet flow module and the top surface, the left side surface and the right side surface of the packing box by using a distance meter after the packing box enters a sterilizing machine, and keeping the distances between the jet flow module and the top surface, the left side surface and the right side surface of the packing box between 10mm and 30mm by using a positioning adjusting mechanism. Then, the gas valve is opened and the high-voltage power supply is carried out to generate low-temperature plasma jet with the speed of 1.0m/s to 3.0m/s, and the top surface, the left side surface and the right side surface of the packing box are disinfected within 10s to 20 s. The box is then advanced by another set of conveyor rollers, which are at 90 ℃ to the previous set. Similar to the previous set of conveying rollers, after the packaging box enters the conveying rollers, the distance between the jet flow module and the left side surface and the distance between the jet flow module and the right side surface (the front side surface and the rear side surface on the previous set of conveying rollers) of the packaging box are detected by using the distance measuring instrument, and the distance between the jet flow module and the top surface and the left side surface and the distance between the jet flow module and the right side surface of the packaging box are maintained between 10mm and 30mm by means of the positioning adjusting mechanism. Then, the air valve is opened and high-voltage power supply is carried out to generate low-temperature plasma jet with the speed of 1.0m/s to 3.0m/s, and the left side surface and the right side surface (the front side surface and the rear side surface on the upper group of conveying rollers) of the packing box are disinfected within 10s to 20 s.
Outer packing cases for food 1
In the present invention, the outer wrapper 1 is divided into six panels for the purpose of clearly explaining the sterilization process of the respective panels of the outer wrapper 1. As shown in fig. 2, the outer food packing case 1 is provided with an upper panel, a bottom panel, a front panel, a rear panel, a left panel and a right panel.
Packing box conveying unit 2
In the present invention, referring to the packing box conveying unit 2 shown in fig. 1, the outer packing box 1 for food is a mechanism for advancing and conveying in the X-axis direction. The packaging box transmission unit 2 at least comprises a first-level conveyor belt transmission unit 7 and a second-level conveyor belt transmission unit 6, and the first-level conveyor belt transmission unit 7 and the second-level conveyor belt transmission unit 6 are identical in structure. The first-stage conveyor belt transmission unit 7 is arranged in front of the chemical disinfection solution coating unit 4; the second-stage conveyor belt transmission unit 6 is installed behind the chemical sterilizing liquid coating unit 4, and the jet unit 5 of the atmospheric pressure low-temperature plasma is installed above the second-stage conveyor belt transmission unit 6.
When the sterilization is performed, the outer food packing case 1 is moved in the X-axis direction by the packing case transferring unit 2.
First-stage belt conveyor transport unit 7
Referring to fig. 2 and 2A, the first-stage belt conveyor transmission unit 7 includes a first motor, a first working belt, a driving transmission wheel 7A, a driven transmission wheel 7B, and a transmission bracket 7C. A driving transmission wheel 7A is mounted on an output shaft of the first motor, a first working belt is movably sleeved between the driving transmission wheel 7A and the driven transmission wheels 7B, and the driving transmission wheel 7A and the driven transmission wheels 7B are mounted on a transmission bracket 7C. Under the drive of first motor, it is rotatory to drive initiative transfer gear 7A, and then drives first work belt and rotate, and the rotation of first work belt has driven a plurality of driven transfer gears 7B and has followed the motion to transport outer packing box 1 of food to the entrance of the coating unit 4 of chemical antiseptic solution.
In the invention, the first-stage conveyor belt transmission unit 7 adopts a Siemens PLC1200 multi-stage conveyor belt system.
Second stage conveyor transfer unit 6
Referring to fig. 2, 2A and 4, the second-stage belt conveyor transmission unit 6 includes a second motor, a second working belt, a driving transmission wheel 6A, a driven transmission wheel 6B, and a transmission bracket 6C. The output shaft of the second motor is provided with a driving transmission wheel 6A, a second working belt is movably sleeved between the driving transmission wheel 6A and the driven transmission wheels 6B, and the driving transmission wheel 6A and the driven transmission wheels 6B are arranged on a transmission bracket 6C. Under the drive of second motor, it is rotatory to drive initiative transfer gear 6A, and then drives the rotation of second work belt, and the rotation of second work belt has driven a plurality of driven transfer gear 6B and has followed the motion, and outer packing box 1 of food after the coating unit 4 of chemical sterilizing liquid is handled is transported by second level conveyer belt transmission unit 6.
In the invention, the second-stage conveyor belt transmission unit 6 adopts a Siemens PLC1200 multi-stage conveyor belt system.
Image and positioning acquisition unit 3
Referring to fig. 1, 2, and 2A, the image and location acquiring unit 3 is composed of a camera 3A and a range finder 3B. The camera is used for collecting image information of the outer food packing case 1. The distance measuring instrument 3B is used for collecting the working position information of the outer food packing box 1 on the working belt.
In the invention, a camera and a distance meter are respectively arranged on the first-stage conveyor belt transmission unit 7, the chemical disinfection solution coating unit 4, the atmospheric pressure low-temperature plasma jet unit 5 and the second-stage conveyor belt transmission unit 6.
Referring to fig. 2, 2A, and 3, the chemical sterilizing liquid coating unit 4 includes a first dipping roller driving motor, a second dipping roller driving motor, a first dipping roller 4A, a second dipping roller 4B, and a chemical sterilizing liquid storage container 4C.
Install the DA shaft coupling on first dipping on the output shaft of medicine gyro wheel driving motor, the other end of DA shaft coupling is installed and is being dipped the tip of the left end of medicine gyro wheel 4A first.
The second is dipped and is installed the DB shaft coupling on the output shaft of medicine gyro wheel driving motor, the other end of DB shaft coupling is installed and is dipped the tip of the left end of medicine gyro wheel 4B at the second.
The chemical disinfection liquid storage container 4C is used for storing chemical disinfection liquid; and on the other hand, the first and second dipping rollers 4A and 4B are mounted and supported.
A DA bearing mounting hole 4C1 and a DC bearing mounting hole 4C3 are formed in a side panel of the chemical disinfectant storage container 4C; a DA deep groove ball bearing 4A1 is arranged in the DA bearing mounting hole 4C1, and the DA deep groove ball bearing 4A1 is sleeved at the right end of the first medicine dipping roller 4A; a DC deep groove ball bearing 4A3 is arranged in the DC bearing mounting hole 4C3, and the DC deep groove ball bearing 4A3 is sleeved at the right end of the second medicine dipping roller 4B;
a DB bearing mounting hole 4C2 and a DD bearing mounting hole 4C4 are arranged on the other side panel of the chemical disinfectant storage container 4C; a DB deep groove ball bearing 4A2 is installed in the DB bearing installation hole 4C2, the DB deep groove ball bearing 4A2 is sleeved at the left end of the first medicine dipping roller 4A, and the end part of the left end of the first medicine dipping roller 4A is installed with an output shaft of a first medicine dipping roller driving motor through a coupler, so that the first medicine dipping roller driving motor drives the first medicine dipping roller 4A to rotate; install DD deep groove ball bearing 4A4 in DD bearing mounting hole 4C4, DD deep groove ball bearing 4A4 cup joints the left end that the second dips the medicine gyro wheel 4B, and the tip that the second dips the left end of medicine gyro wheel 4B is installed through shaft coupling and second output shaft that dips medicine gyro wheel driving motor, realizes that the second dips the medicine gyro wheel driving motor drive second and dips the medicine gyro wheel 4B and rotate.
In the invention, when the first dipping roller driving motor drives the first dipping roller 4A to rotate, chemical disinfection solution is adhered to the outer part of the first dipping roller 4A; when the second medicine dipping roller driving motor drives the second medicine dipping roller 4B to rotate, chemical disinfection solution is adhered to the outer part of the second medicine dipping roller 4B; the first medicine dipping roller 4A and the second medicine dipping roller 4B which are stuck with chemical disinfection liquid are contacted with the bottom panel of the external food packaging box 1, and the disinfection of the bottom panel of the external food packaging box 1 is achieved in the process that the motor drives the medicine dipping rollers to push.
In the chemical disinfectant coating unit 4 designed by the present invention, the lower half parts of the conveying rollers (the first dipping roller 4A and the second dipping roller 4B) are immersed in the chemical disinfectant storage container 4C containing disinfectant to adhere the disinfectant. Then, in the process that the roller driving motor drives the roller to roll along the direction of the jet unit to push the packing box to move forward, the disinfectant is coated on the bottom panel of the packing box. The effective components of the disinfectant are hydrogen peroxide, peracetic acid, chlorine dioxide, electrolyzed oxidizing water or sodium hypochlorite, and the solvent is water. The concentration of the disinfectant is 1-10%.
Referring to fig. 2, 2A, 3, 4A, 4B, 5A and 5B, the jet unit 5 for atmospheric pressure low temperature plasma includes an external high voltage power supply, an external gas supply device, an upper jet frame 5A, a right jet frame 5B, a left jet frame 5C and an integrated atmospheric pressure low temperature plasma jet module 5D. The structure of the jet upper frame 5A, the jet right frame 5B and the jet left frame 5C are the same, and the jet upper frame 5A, the jet right frame 5B and the jet left frame 5C are built into a channel type structure. An atmospheric pressure low-temperature plasma jet integrated module 5D is arranged in each grid of the jet frame.
In the invention, a jet upper frame 5A, a jet right frame 5B, a jet left frame 5C and an atmospheric pressure low temperature plasma jet integration module 5D are arranged in an outer shell 8. The inlet end of the outer shell 8 adopts a soft sheet-shaped plastic thin plate to block air from entering, and the outlet end of the outer shell 8 is also provided with a sheet-shaped plastic thin plate.
The external high-voltage power supply adopts a high-frequency alternating current, positive and negative direct current or pulse power supply as a power supply, and the high-voltage end of the power supply is connected into a discharge electrode (namely a tungsten steel solid iron rod 51A) of the high-voltage discharge reactor for gas discharge.
The gas species supplied by the external gas supply device is argon, nitrogen or air, and the high-pressure discharge activates the gas to form plasma when passing through the discharge region (i.e., the compartment 51E), so that the gas flow after the discharge region is argon, nitrogen or air containing plasma components.
Referring to fig. 4A, the jet left frame 5C is provided with a plurality of squares 5C1, and the squares 5C1 are used for mounting the atmospheric pressure low temperature plasma jet integration module 5D.
Referring to fig. 5, a structural diagram of the atmospheric pressure low temperature plasma jet integration module 5D is shown, in which the atmospheric pressure low temperature plasma jet integration module 5D is formed by arraying a plurality of dielectric barrier discharge reactors 51 in a jet box housing 5D 1.
Referring to fig. 5A, a structural diagram of the dielectric barrier discharge reactor 51 is shown, in which the dielectric barrier discharge reactor 51 includes a tungsten steel solid iron rod 51A, a quartz tube 51B, a grounding copper tube 51C and a fixed iron sheet 51D. The tungsten steel solid iron rod 51A is connected with an external high-voltage power supply through a cable. A solid iron tungsten rod 51A serves as a metal discharge electrode. The grounding copper pipe 51C serves as a metal grounding electrode. The discharge electrode is disposed at the center of the quartz tube 51B, the ground electrode is in close contact with the outer surface of the quartz tube 51B, and the airflow passes through the space 51E between the inner wall of the quartz tube and the discharge electrode. The dielectric barrier discharge reactor 51 is of a needle-ring dielectric barrier structure, that is, the tungsten steel solid iron rod 51A is a needle, the spacing cavity 51E formed between the tungsten steel solid iron rod 51A and the quartz tube 51B is a ring, the outlet end of the dielectric barrier discharge reactor 51 is a jet head, and the jet head emits plasma beam.
The quartz tube 51B is provided with a gas source through hole 51B1 and an EA center through hole 51B 2. The air supply through hole 51B1 is used for communicating with an external air supply device through a hose. The EA central through hole 51B2 is used for placing the solid iron bar 51A of tungsten steel, and a spacing cavity 51E is arranged between the solid iron bar 51A of tungsten steel and the quartz tube 51B. The compartment 51E is used to deliver a source of gas.
The grounding copper pipe 51C is provided with an EB center through hole 51C 1. The EB center through hole 51C1 is used for placing the quartz tube 51B, and the outer wall of the quartz tube 51B is jointed and sleeved with the inner wall of the grounding copper tube 51C.
The fixed iron sheet 51D is provided with an EC center through hole 51D 1. The EC central through hole 51D1 is for one end of the solid iron bar 51A of tungsten steel to pass through.
The jet unit 5 of the atmospheric pressure low-temperature plasma designed by the invention is of a channel type, the top surface, the left side surface and the right side surface of the channel are provided with a plurality of atmospheric pressure low-temperature plasma jet integrated modules 5D which supply air and power independently, and a camera and a distance meter are also arranged in the channel and used for observing and detecting the conditions (such as distance and speed) of the packing box in the channel. The jet flow is communicated with the atmosphere, and the pressure is almost the same as the atmosphere; the plasma is generated in high-pressure gas discharge, and the temperature is close to the atmosphere; the air flow is discharged from the discharge area (i.e., the compartment 51E) under the driving action of the ion wind and the subsequent air flow generated by the high-voltage discharge to form a jet flow. The distance between the jet emitted by the atmospheric pressure low-temperature plasma jet integrated module 5D and the outer surface of the packing box is kept between 10mm and 30 mm.
In order to more intuitively understand the structure of the jet unit 5 of the atmospheric pressure low temperature plasma designed by the present invention, refer to the jet unit 5 of the atmospheric pressure low temperature plasma with a box-type structure shown in fig. 4B, in the figure, a modularized atmospheric pressure low temperature plasma jet integration module 5D is installed through a rectangular support frame 50B, a range finder 50E of a camera 50D is also installed on the rectangular support frame 50B, a belt 50C is placed below, and a box-type housing 50A is outside the rectangular support frame 50B. The high voltage power supply provides high voltage electrode voltage for the tungsten steel solid iron rod 51A in the dielectric barrier discharge reactor 51 in each atmospheric pressure low temperature plasma jet integrated module 5D.
Food external packing disinfection combined device (folding type disinfection device for short) equipped with degradation ozone
Referring to fig. 6 and 6A, in the present invention, in order to achieve dead-angle-free killing of a large batch of food outer packaging boxes in a large-scale scene, foldable distributed food outer packaging sterilization combination devices (folding type killing devices for short) equipped with degraded ozone of an X-axis section killing unit and a Y-axis section killing unit are adopted.
The X-axis section sterilizing unit consists of a packing box transmission unit 2, an image and positioning acquisition unit 3, a chemical disinfectant coating unit 4 and an atmospheric pressure low-temperature plasma jet unit 5.
The Y-axis section sterilizing unit consists of an ozone decomposition catalytic unit 9, a Y-axis atmospheric pressure low-temperature plasma jet unit 10, a gas purifying unit 11 and a Y-axis conveying belt transmission unit 12. The Y-axis atmospheric pressure low-temperature plasma jet unit 10 is composed of a jet frame 10A and a Y-axis atmospheric pressure low-temperature plasma jet integration module 10D.
The structures of the Y-axis atmospheric pressure low-temperature plasma jet integrated module 10D and the atmospheric pressure low-temperature plasma jet integrated module 5D are the same.
The Y-axis belt transfer unit 12 is identical in structure to the first-stage belt transfer unit 7.
And the jet unit 5 of the atmospheric pressure low-temperature plasma in the X-axis section sterilizing unit, the second-stage roller transmission unit 6 and the Y-axis section sterilizing unit are respectively provided with an outer shell 8 for surrounding. A beam 8A is installed between the housing portion of the jet upper frame 5A and the jet upper frame 5A, and the beam 8A supports a portion of the outer housing 8.
The folding type sterilizing device designed by the invention adopts folding distribution as shown in fig. 6 and 6A in order to save floor space. On the other hand, in order to prevent the large-batch food outer packaging boxes from generating ozone in the dead-corner-free sterilization process, in order to avoid ozone pollution, the outer shell 8 is provided with a gas purification unit 11, and purified gas after ozone decomposition is discharged through an external discharge pipeline 11A.
The folding type killing device designed by the invention adopts a structure that guide plates are arranged on two sides in order to prevent the outer food packaging box 1 from leaving the first-stage conveyor belt transmission unit 7, the second-stage conveyor belt transmission unit 6 and the Y-axis conveyor belt transmission unit 12 in the belt transmission process. The A guide plate 13A is disposed opposite to the B guide plate 13B, and the C guide plate 13C is disposed opposite to the D guide plate 13D.
Referring to fig. 6, 6B and 6C, the gas purification unit 11 includes an outer discharge pipe 11A and a gas purifier 11B. One end of the outer discharge pipe 11A is fixedly mounted on the outer shell 8. The gas purifier 11B is fixedly mounted on the outer housing 8 through a turndown 11B 4. The gas purifier 11B is disposed in the discharge pipe 11A.
The gas purifier 11B is composed of a hollow cylinder 11B1, a filter element 11B3, an upper gauze 11B2, and a lower gauze 11B 5. The filter element 11B3 is placed between the upper screen 11B2 and the lower screen 11B5 and is externally hollow cylindrical 11B 1. The filter element 11B3 is a porous structure made of activated carbon.
Ozone decomposition catalytic unit 9
Referring to fig. 6 and 6A, the ozone decomposition catalyst unit 9 includes a support frame 9A and a catalyst material 9B, and the catalyst material 9B is disposed in each cell of the support frame 9A. The catalytic material 9B is a lithium potassium manganese composite oxide catalyst.
The treatment method for sterilizing operation by applying the folding sterilizing device designed by the invention comprises the following steps:
(A) placing the outer food packing box 1 on a belt of the first-stage conveyor belt transmission unit 7 and between the guide plate A13A and the guide plate B13B;
(B) the first motor in the first-stage conveyor belt transmission unit 7 drives the transmission wheel to move, so that the outer food packaging box 1 is transmitted to the chemical sterilizing liquid coating unit 4;
the movement of the outer food packaging box 1 in the first-stage conveyor belt conveying unit 7 is detected by a camera and a distance meter;
(C) when the external food packaging box 1 passes through the dipping roller of the chemical disinfectant coating unit 4, disinfectant is adhered to the bottom panel of the external food packaging box 1; the medicine dipping rollers dip disinfection liquid from the chemical disinfection liquid storage container in the rolling process, and when the packing box 1 passes over the medicine dipping rollers, the chemical disinfection liquid on the medicine dipping rollers is coated on the bottom surface of the packing box 1, so that the bottom surface of the packing box is killed.
(D) The outer food packaging box 1 enters an inlet of a jet flow unit 5 of atmospheric pressure low-temperature plasma after passing through a coating unit 4 of chemical disinfectant; in the jet unit 5 of atmospheric pressure low temperature plasma, left side low temperature plasma jet module and top low temperature plasma jet module can reciprocate, and the horizontal migration of 1 width of packing box that right side low temperature plasma jet module measured according to the distancer makes the distance between 1 left surface of packing box and left side low temperature plasma jet module, 1 right flank of packing box and right side low temperature plasma jet module maintain 10 ~ 30mm to the realization is to the killing of two sides of packing box 1. Meanwhile, the height of the packaging box 1 is detected by means of the top distance meter, the top low-temperature plasma jet module is linked with the left low-temperature plasma jet module and the top low-temperature plasma jet module to move up and down according to the height of the packaging box 1 measured by the distance meter, so that the distance between the top surface of the packaging box 1 and the top low-temperature plasma jet module is maintained at 10-30 mm, and therefore the top surface of the packaging box 1 is killed.
(E) And the packaging box 1A is conveyed into the Y-axis conveyor belt conveying unit 12 under the action of the second-stage conveyor belt conveying unit 6, and the temperature between the Y-axis conveyor belt conveying unit 12 and the second-stage conveyor belt conveying unit 6 is 90 ℃. Therefore, the front and back surfaces of the original packaging box 1 are changed into the left and right side surfaces. Similarly, the Y-axis conveyor transport unit 12 transports the combined sterilized outer food packing box 1A between the C and D guide plates 13C and 13D, and pushes the packing box 1 toward the C guide plate 13C by means of the D guide plate 13D.
(F) And the combined sterilized outer food packaging box 1A is conveyed to the position of the distance measuring instrument by the Y-axis conveying belt conveying unit 12, and the width of the combined sterilized outer food packaging box 1A which rotates by 90 ℃ is determined by the distance measuring instrument.
(G) The combined and sterilized outer food packaging box 1A is conveyed forwards by the Y-axis conveying belt transmission unit 12, and under the action of the ozone decomposition catalytic unit 9 and the Y-axis atmospheric pressure low-temperature plasma jet unit 10, the sterilization and the sterilization of two side surfaces of the combined and sterilized outer food packaging box 1A at 90 ℃ are realized.
The packaging box is continuously sterilized, and dead-angle-free sterilization of all 6 sides of the packaging box can be realized by means of a method combining atmospheric pressure low-temperature plasma jet flow and chemical coating.
Example 1
During actual work, the position of the packing box is monitored by using the camera and the distance measuring instrument. The upper and lower positions of the top jet module and the horizontal position of the side jet module are adjusted according to the length of the plasma jet so as to ensure that the jet head is close to a killing object as much as possible and realize effective killing. The jet head adopts a needle-ring dielectric barrier structure, the dielectric barrier material is a quartz tube (the outer diameter is 13mm, the inner diameter is 10mm), the high-voltage electrode adopts a tungsten steel solid iron rod (the diameter is 6mm), the low-voltage electrode adopts a perforated copper plate, and the dielectric material penetrates through the perforated copper plate. Each fluidic module contained 25 fluidic heads (5 x 5) spaced 3mm apart. A high-voltage alternating current power supply is used as a power supply, argon is used as carrier gas, the flow rate of single-tube argon is 4L/min, the voltage of a high-voltage electrode is 8kV, and the length of plasma jet flow is 30 mm. After cold chain foods with different shapes are sterilized, the sterilizing efficiency of pathogenic microorganisms can reach 100 percent.
As shown in FIG. 7, Escherichia coli was cultured for 24 hours, and the Escherichia coli was sterilized for 2 seconds using the apparatus of example 1 of the present invention, and the removal rate of Escherichia coli was 100%.
Example 2:
example 2 differs from example 1 in that:
the jet head adopts a ring-ring dielectric barrier structure, the dielectric barrier material is a quartz tube (the outer diameter is 5mm, the inner diameter is 3mm), the high-voltage electrode and the low-voltage electrode both adopt perforated copper plates, wherein the high-voltage electrode is positioned close to the gas source end, and the quartz tube penetrates through the two copper plates and is fixed in the jet module. Each fluidic module contained 25 fluidic heads (5 x 5) spaced 3mm apart. A high-voltage pulse power supply is used as a power supply, argon is used as carrier gas, the flow rate of single-tube argon is 4L/min, the voltage of a high-voltage electrode is 20kV, the frequency of an output power supply is 10kHz, and the length of plasma jet flow is 30 mm. After cold chain foods with different shapes are sterilized, the sterilizing efficiency of pathogenic microorganisms can reach 100 percent.
Example 3
Referring to fig. 8, staphylococcus aureus was formed after 24 hours of culture, and the device of example 3 of the present invention was used to kill staphylococcus aureus for 2 seconds, which resulted in a 100% removal rate.
Example 4:
example 4 differs from example 3 in that:
the jet head adopts a plate-plate dielectric barrier structure, the form of plasma generated by discharge is creeping discharge, the dielectric barrier material is a quartz plate (3 mm in thickness, 150 in length and 25 in width), the high-voltage electrode and the low-voltage electrode both adopt copper plates, the quartz plate is attached to the low-voltage electrode, the distance between the high-voltage electrode and the quartz plate is 3mm, and the outer part of the jet head is insulated and packaged by adopting a polytetrafluoroethylene material. A high-voltage pulse power supply is used as a power supply, argon is used as carrier gas, the argon flow of a single jet head is 6L/min, the voltage of a high-voltage electrode is 20kV, the frequency of an output power supply is 10kHz, and the length of plasma jet flow is 30 mm. After cold chain foods with different shapes are sterilized, the sterilizing efficiency of pathogenic microorganisms can reach 100 percent.
It will be apparent to those skilled in the art that various modifications and improvements can be made to the embodiments of the present invention without departing from the inventive concept of the present application, which falls within the scope of the present application.
Claims (4)
1. A food outer package degassing unit based on efflux combines together with coating which characterized in that: the device consists of a packing box transmission unit (2), an image and positioning acquisition unit (3), a chemical disinfectant coating unit (4) and an atmospheric pressure low-temperature plasma jet unit (5);
the packaging box transmission unit (2) is a mechanism for pushing and conveying the outer food packaging box (1) along the X-axis direction; the packaging box conveying unit (2) at least comprises a first-stage conveyor belt conveying unit (7) and a second-stage conveyor belt conveying unit (6), and the first-stage conveyor belt conveying unit (7) and the second-stage conveyor belt conveying unit (6) are identical in structure; the first-stage conveyor belt transmission unit (7) is arranged in front of the coating unit (4) of the chemical disinfection solution; the second-stage conveyor belt transmission unit (6) is arranged behind the coating unit (4) of the chemical disinfection solution, and a jet unit (5) of atmospheric pressure low-temperature plasma is arranged above the second-stage conveyor belt transmission unit (6);
the first-stage conveyor belt transmission unit (7) comprises a first motor, a first working belt, a first driving transmission wheel (7A), a first driven transmission wheel (7B) and a first transmission bracket (7C); a first driving transmission wheel (7A) is mounted on an output shaft of the first motor, a first working belt is movably sleeved between the first driving transmission wheel (7A) and the plurality of first driven transmission wheels (7B), and the first driving transmission wheel (7A) and the first driven transmission wheels (7B) are mounted on a first transmission bracket (7C); under the drive of a first motor, a first driving transmission wheel (7A) is driven to rotate, so that a first working belt is driven to rotate, and the rotation of the first working belt drives a plurality of first driven transmission wheels (7B) to move along, so that the outer food packaging box (1) is conveyed to an inlet of a chemical disinfectant coating unit (4);
the second-stage conveyor belt transmission unit (6) comprises a second motor, a second working belt, a second driving transmission wheel (6A), a second driven transmission wheel (6B) and a second transmission bracket (6C); a second driving transmission wheel (6A) is mounted on an output shaft of the second motor, a second working belt is movably sleeved between the second driving transmission wheel (6A) and the plurality of second driven transmission wheels (6B), and the second driving transmission wheel (6A) and the second driven transmission wheels (6B) are mounted on a second transmission bracket (6C); under the drive of a second motor, a second driving transmission wheel (6A) is driven to rotate, so that a second working belt is driven to rotate, a plurality of second driven transmission wheels (6B) are driven to move along with the rotation of the second working belt, and the outer food packing box (1) treated by the chemical disinfectant coating unit (4) is transported by a second-stage transmission belt transmission unit (6);
the image and positioning acquisition unit (3) consists of a camera (3A) and a range finder (3B); the camera is used for collecting image information of the outer food packaging box (1); the distance measuring instrument (3B) is used for collecting the working position information of the outer food packing box (1) on the working belt;
the coating unit (4) of the chemical disinfectant comprises a first dipping roller driving motor, a second dipping roller driving motor, a first dipping roller (4A), a second dipping roller (4B) and a chemical disinfectant storage container (4C);
a DA coupling is arranged on an output shaft of the first medicine dipping roller driving motor, and the other end of the DA coupling is arranged at the end part of the left end of the first medicine dipping roller (4A);
a DB coupling is arranged on an output shaft of the second medicine dipping roller driving motor, and the other end of the DB coupling is arranged at the end part of the left end of the second medicine dipping roller (4B);
the chemical disinfection liquid storage container (4C) is used for placing chemical disinfection liquid; on the other hand, the first medicine dipping roller (4A) and the second medicine dipping roller (4B) are arranged and supported;
a DA bearing mounting hole (4C1) and a DC bearing mounting hole (4C3) are formed in one side panel of the chemical disinfectant storage container (4C); a DA deep groove ball bearing (4A1) is arranged in the DA bearing mounting hole (4C1), and the DA deep groove ball bearing (4A1) is sleeved at the right end of the first medicine dipping roller (4A); a DC deep groove ball bearing (4A3) is arranged in the DC bearing mounting hole (4C3), and the DC deep groove ball bearing (4A3) is sleeved at the right end of the second medicine dipping roller (4B);
a DB bearing mounting hole (4C2) and a DD bearing mounting hole (4C4) are arranged on the other side panel of the chemical disinfectant storage container (4C); a DB deep groove ball bearing (4A2) is installed in the DB bearing installation hole (4C2), the DB deep groove ball bearing (4A2) is sleeved at the left end of the first dipping roller (4A), and the end part of the left end of the first dipping roller (4A) is installed with an output shaft of a first dipping roller driving motor through a coupler, so that the first dipping roller driving motor drives the first dipping roller (4A) to rotate; a DD deep groove ball bearing (4A4) is installed in the DD bearing installation hole (4C4), the DD deep groove ball bearing (4A4) is sleeved at the left end of the second medicine dipping roller (4B), and the end part of the left end of the second medicine dipping roller (4B) is installed with an output shaft of a second medicine dipping roller driving motor through a coupler, so that the second medicine dipping roller driving motor drives the second medicine dipping roller (4B) to rotate;
the jet unit (5) of the atmospheric pressure low-temperature plasma comprises an external high-voltage power supply, an external gas source supply device, a jet upper frame (5A), a jet right frame (5B), a jet left frame (5C) and an atmospheric pressure low-temperature plasma jet integration module (5D); the structure of the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are the same, and the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are built into a channel structure; an atmospheric pressure low-temperature plasma jet integration module (5D) is arranged in each grid of the jet framework;
a plurality of grids (5C1) are arranged on the jet flow left frame (5C), and the grids (5C1) are used for installing an atmospheric pressure low-temperature plasma jet flow integration module (5D);
the atmospheric pressure low-temperature plasma jet integrated module (5D) is formed by arraying a plurality of dielectric barrier discharge reactors (51) in a jet box shell (5D 1);
the dielectric barrier discharge reactor (51) comprises a tungsten steel solid iron bar (51A), a quartz tube (51B), a grounding copper tube (51C) and a fixed iron sheet (51D); the tungsten steel solid iron bar (51A) is connected with an external high-voltage power supply through a cable; a tungsten steel solid iron bar (51A) is used as a metal discharge electrode; the grounding copper pipe (51C) is used as a metal grounding electrode; the discharge electrode is arranged at the center of the quartz tube (51B), the grounding electrode is tightly attached to the outer surface of the quartz tube (51B), and airflow passes through a spacing cavity (51E) between the inner wall of the quartz tube and the discharge electrode;
the quartz tube (51B) is provided with a gas source through hole (51B1) and an EA central through hole (51B 2); the air source through hole (51B1) is used for being communicated with an external air source supply device through a hose; the EA central through hole (51B2) is used for placing a tungsten steel solid iron bar (51A), and a spacing cavity (51E) is arranged between the tungsten steel solid iron bar (51A) and the quartz tube (51B); the spacing cavity (51E) is used for conveying a gas source;
an EB center through hole (51C1) is arranged on the grounding copper pipe (51C); the EB center through hole (51C1) is used for placing the quartz tube (51B), and the outer wall of the quartz tube (51B) is jointed and sleeved with the inner wall of the grounding copper tube (51C);
an EC center through hole (51D1) is arranged on the fixed iron sheet (51D); the EC center through hole (51D1) is used for one end of the tungsten steel solid iron rod (51A) to pass through.
2. A food outer package degassing unit based on efflux combines together with coating which characterized in that: adopting the folding distribution of the X-axis section killing units and the Y-axis section killing units;
the X-axis section sterilizing unit consists of a packing box transmission unit (2), an image and positioning acquisition unit (3), a chemical disinfectant coating unit (4) and an atmospheric pressure low-temperature plasma jet unit (5);
the Y-axis section sterilizing unit consists of an ozone decomposition catalytic unit (9), a Y-axis atmospheric pressure low-temperature plasma jet unit (10), a gas purifying unit (11) and a Y-axis conveyor belt transmission unit (12); the Y-axis atmospheric pressure low-temperature plasma jet unit (10) is composed of a jet frame (10A) and a Y-axis atmospheric pressure low-temperature plasma jet integration module (10D);
the Y-axis atmospheric pressure low-temperature plasma jet integrated module (10D) and the atmospheric pressure low-temperature plasma jet integrated module (5D) have the same structure;
the Y-axis conveyor belt transmission unit (12) and the first-stage conveyor belt transmission unit (7) are identical in structure;
outer shells (8) are arranged outside the jet unit (5) of the atmospheric pressure low-temperature plasma in the X-axis section killing unit, the second-stage conveyor belt transmission unit (6) and the Y-axis section killing unit for surrounding; a cross beam (8A) is arranged between the shell part at the jet flow upper frame (5A) and the jet flow upper frame (5A), and the cross beam (8A) is utilized to support part of the outer shell (8);
the packaging box transmission unit (2) is a mechanism for pushing and conveying the outer food packaging box (1) along the X-axis direction; the packaging box conveying unit (2) at least comprises a first-stage conveyor belt conveying unit (7) and a second-stage conveyor belt conveying unit (6), and the first-stage conveyor belt conveying unit (7) and the second-stage conveyor belt conveying unit (6) are identical in structure; the first-stage conveyor belt transmission unit (7) is arranged in front of the coating unit (4) of the chemical disinfection solution; the second-stage conveyor belt transmission unit (6) is arranged behind the coating unit (4) of the chemical disinfection solution, and a jet unit (5) of atmospheric pressure low-temperature plasma is arranged above the second-stage conveyor belt transmission unit (6);
the first-stage conveyor belt transmission unit (7) comprises a first motor, a first working belt, a first driving transmission wheel (7A), a first driven transmission wheel (7B) and a first transmission bracket (7C); a first driving transmission wheel (7A) is mounted on an output shaft of the first motor, a first working belt is movably sleeved between the first driving transmission wheel (7A) and the plurality of first driven transmission wheels (7B), and the first driving transmission wheel (7A) and the first driven transmission wheels (7B) are mounted on a first transmission bracket (7C); under the drive of a first motor, a first driving transmission wheel (7A) is driven to rotate, so that a first working belt is driven to rotate, and the rotation of the first working belt drives a plurality of first driven transmission wheels (7B) to move along, so that the outer food packaging box (1) is conveyed to an inlet of a chemical disinfectant coating unit (4);
the second-stage conveyor belt transmission unit (6) comprises a second motor, a second working belt, a second driving transmission wheel (6A), a second driven transmission wheel (6B) and a second transmission bracket (6C); a second driving transmission wheel (6A) is mounted on an output shaft of the second motor, a second working belt is movably sleeved between the second driving transmission wheel (6A) and the plurality of second driven transmission wheels (6B), and the second driving transmission wheel (6A) and the second driven transmission wheels (6B) are mounted on a second transmission bracket (6C); under the drive of a second motor, a second driving transmission wheel (6A) is driven to rotate, so that a second working belt is driven to rotate, a plurality of second driven transmission wheels (6B) are driven to move along with the rotation of the second working belt, and the outer food packing box (1) treated by the chemical disinfectant coating unit (4) is transported by a second-stage transmission belt transmission unit (6);
the image and positioning acquisition unit (3) consists of a camera (3A) and a range finder (3B); the camera is used for collecting image information of the outer food packaging box (1); the distance measuring instrument (3B) is used for collecting the working position information of the outer food packing box (1) on the working belt;
the coating unit (4) of the chemical disinfectant comprises a first dipping roller driving motor, a second dipping roller driving motor, a first dipping roller (4A), a second dipping roller (4B) and a chemical disinfectant storage container (4C);
a DA coupling is arranged on an output shaft of the first medicine dipping roller driving motor, and the other end of the DA coupling is arranged at the end part of the left end of the first medicine dipping roller (4A);
a DB coupling is arranged on an output shaft of the second medicine dipping roller driving motor, and the other end of the DB coupling is arranged at the end part of the left end of the second medicine dipping roller (4B);
the chemical disinfection liquid storage container (4C) is used for placing chemical disinfection liquid; on the other hand, the first medicine dipping roller (4A) and the second medicine dipping roller (4B) are arranged and supported;
a DA bearing mounting hole (4C1) and a DC bearing mounting hole (4C3) are formed in one side panel of the chemical disinfectant storage container (4C); a DA deep groove ball bearing (4A1) is arranged in the DA bearing mounting hole (4C1), and the DA deep groove ball bearing (4A1) is sleeved at the right end of the first medicine dipping roller (4A); a DC deep groove ball bearing (4A3) is arranged in the DC bearing mounting hole (4C3), and the DC deep groove ball bearing (4A3) is sleeved at the right end of the second medicine dipping roller (4B);
a DB bearing mounting hole (4C2) and a DD bearing mounting hole (4C4) are arranged on the other side panel of the chemical disinfectant storage container (4C); a DB deep groove ball bearing (4A2) is installed in the DB bearing installation hole (4C2), the DB deep groove ball bearing (4A2) is sleeved at the left end of the first dipping roller (4A), and the end part of the left end of the first dipping roller (4A) is installed with an output shaft of a first dipping roller driving motor through a coupler, so that the first dipping roller driving motor drives the first dipping roller (4A) to rotate; a DD deep groove ball bearing (4A4) is installed in the DD bearing installation hole (4C4), the DD deep groove ball bearing (4A4) is sleeved at the left end of the second medicine dipping roller (4B), and the end part of the left end of the second medicine dipping roller (4B) is installed with an output shaft of a second medicine dipping roller driving motor through a coupler, so that the second medicine dipping roller driving motor drives the second medicine dipping roller (4B) to rotate;
the jet unit (5) of the atmospheric pressure low-temperature plasma comprises an external high-voltage power supply, an external gas source supply device, a jet upper frame (5A), a jet right frame (5B), a jet left frame (5C) and an atmospheric pressure low-temperature plasma jet integration module (5D); the structure of the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are the same, and the jet upper frame (5A), the jet right frame (5B) and the jet left frame (5C) are built into a channel structure; an atmospheric pressure low-temperature plasma jet integration module (5D) is arranged in each grid of the jet framework;
the jet upper frame (5A), the jet right frame (5B), the jet left frame (5C) and the atmospheric pressure low-temperature plasma jet integration module (5D) are arranged in the outer shell (8); the inlet end of the outer shell (8) adopts a soft flaky plastic thin plate to block air from entering, and the outlet end of the outer shell (8) is also provided with a flaky plastic thin plate;
a plurality of grids (5C1) are arranged on the jet flow left frame (5C), and the grids (5C1) are used for installing an atmospheric pressure low-temperature plasma jet flow integration module (5D);
the atmospheric pressure low-temperature plasma jet integrated module (5D) is formed by arraying a plurality of dielectric barrier discharge reactors (51) in a jet box shell (5D 1);
the dielectric barrier discharge reactor (51) comprises a tungsten steel solid iron bar (51A), a quartz tube (51B), a grounding copper tube (51C) and a fixed iron sheet (51D); the tungsten steel solid iron bar (51A) is connected with an external high-voltage power supply through a cable; a tungsten steel solid iron bar (51A) is used as a metal discharge electrode; the grounding copper pipe (51C) is used as a metal grounding electrode; the discharge electrode is arranged at the center of the quartz tube (51B), the grounding electrode is tightly attached to the outer surface of the quartz tube (51B), and airflow passes through a spacing cavity (51E) between the inner wall of the quartz tube and the discharge electrode; the dielectric barrier discharge reactor (51) is of a needle-ring dielectric barrier structure, namely a tungsten steel solid iron rod (51A) is a needle, a spacing cavity (51E) formed between the tungsten steel solid iron rod (51A) and a quartz tube (51B) is a ring, the outlet end of the dielectric barrier discharge reactor (51) is a jet head, and plasma beams are emitted from the jet head;
the quartz tube (51B) is provided with a gas source through hole (51B1) and an EA central through hole (51B 2); the air source through hole (51B1) is used for being communicated with an external air source supply device through a hose; the EA central through hole (51B2) is used for placing a tungsten steel solid iron bar (51A), and a spacing cavity (51E) is arranged between the tungsten steel solid iron bar (51A) and the quartz tube (51B); the spacing cavity (51E) is used for conveying a gas source;
an EB center through hole (51C1) is arranged on the grounding copper pipe (51C); the EB center through hole (51C1) is used for placing the quartz tube (51B), and the outer wall of the quartz tube (51B) is jointed and sleeved with the inner wall of the grounding copper tube (51C);
an EC center through hole (51D1) is arranged on the fixed iron sheet (51D); the EC center through hole (51D1) is used for one end of the tungsten steel solid iron bar (51A) to pass through;
a gas purification unit (11) is arranged on the outer shell (8), and purified gas after ozone decomposition is discharged through an external discharge pipeline (11A);
the A guide plate (13A) and the B guide plate (13B) are arranged oppositely, and the C guide plate (13C) and the D guide plate (13D) are arranged oppositely;
the gas purification unit (11) comprises an external discharge pipeline (11A) and a gas purifier (11B); one end of the outer discharge pipeline (11A) is fixedly arranged on the outer shell (8); the gas purifier (11B) is fixedly arranged on the outer shell (8) through a lower flanging (11B 4); the gas purifier (11B) is arranged in the outer discharge pipeline (11A);
the gas purifier (11B) is composed of a hollow cylinder (11B 1), a filter core (11B 3), an upper gauze (11B 2) and a lower gauze (11B 5); the filter core (11B 3) is arranged between the upper gauze (11B 2) and the lower gauze (11B 5), and the outer part of the filter core is a hollow cylinder (11B 1); the filter element (11B 3) is a porous structure body made of activated carbon;
the ozone decomposition catalytic unit (9) comprises a supporting frame (9A) and a catalytic material (9B), wherein the catalytic material (9B) is arranged in each square of the supporting frame (9A); the catalytic material (9B) is a lithium potassium manganese composite oxide catalyst.
3. The combined jet and coating based sterilization device for outer food packages according to claim 1 or 2, characterized in that: the distance between the jet emitted by the atmospheric pressure low-temperature plasma jet integrated module (5D) and the outer surface of the packing box is kept between 10mm and 30 mm.
4. The combined jet and coating based sterilization device for outer food packages according to claim 1 or 2, characterized in that: argon is used as carrier gas, the flow of the single-tube argon is 2-6L/min, and the voltage of the high-voltage electrode is 8-20 kV.
Priority Applications (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002191679A (en) * | 2000-10-02 | 2002-07-09 | Ethicon Inc | Method and system of disinfection using low frequency plasma |
| KR20170120838A (en) * | 2016-04-22 | 2017-11-01 | 주식회사 에스피텍 | Spraying Type Sterilization Apparatus And Method Using Complex Disinfectant Fluids and Plasma Jet |
| CN111617291A (en) * | 2020-06-29 | 2020-09-04 | 中科圣杰(深圳)科技集团有限公司 | Rapid disinfection channel |
| CN111878920A (en) * | 2020-07-22 | 2020-11-03 | 费勉仪器科技（上海）有限公司 | High-efficient air disinfection and sterilization device |
| CN112755213A (en) * | 2021-01-08 | 2021-05-07 | 广东爱森医学科技有限公司 | A sterilization passageway for cold chain commodity circulation |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002191679A (en) * | 2000-10-02 | 2002-07-09 | Ethicon Inc | Method and system of disinfection using low frequency plasma |
| KR20170120838A (en) * | 2016-04-22 | 2017-11-01 | 주식회사 에스피텍 | Spraying Type Sterilization Apparatus And Method Using Complex Disinfectant Fluids and Plasma Jet |
| CN111617291A (en) * | 2020-06-29 | 2020-09-04 | 中科圣杰(深圳)科技集团有限公司 | Rapid disinfection channel |
| CN111878920A (en) * | 2020-07-22 | 2020-11-03 | 费勉仪器科技（上海）有限公司 | High-efficient air disinfection and sterilization device |
| CN112755213A (en) * | 2021-01-08 | 2021-05-07 | 广东爱森医学科技有限公司 | A sterilization passageway for cold chain commodity circulation |
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