CN114762518A - Continuous photodynamic sterilization system - Google Patents
Continuous photodynamic sterilization system Download PDFInfo
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- CN114762518A CN114762518A CN202110053717.2A CN202110053717A CN114762518A CN 114762518 A CN114762518 A CN 114762518A CN 202110053717 A CN202110053717 A CN 202110053717A CN 114762518 A CN114762518 A CN 114762518A
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- light source
- photosensitizer
- continuous
- sterilization system
- conveying device
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/26—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/001—Details of apparatus, e.g. for transport, for loading or unloading manipulation, pressure feed valves
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The invention provides a continuous type photodynamic sterilization system, which comprises: the device comprises a box body, a feeding device, a conveying device, a photosensitizer processing device and a light source irradiation device; the feeding device is arranged above one end of the conveying device; the photosensitizer processing device is arranged behind the feeding device and comprises a photosensitizer storage box and a sprayer, and the sprayer is connected to the lower end of the photosensitizer storage box and positioned above the conveying device; the light source irradiation device is arranged behind the photosensitizer processing device and comprises a plurality of light source components which are arranged along the conveying direction of the conveying device. According to the food continuous feeding and conveying device, the feeding device is matched with the conveying device to achieve continuous feeding and conveying of food, the food on the conveying device is subjected to photosensitizer treatment by the photosensitizer treatment device, and then the food is irradiated by the light source irradiation device to achieve photodynamic sterilization of the food. The continuous photodynamic sterilization system can continuously sterilize food, realize continuous operation and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of food sterilization, in particular to a continuous photodynamic sterilization system.
Background
Currently, the sterilization method commonly used in the food industry is heat sterilization, and mainly uses water or steam to directly or indirectly heat food. Although heat sterilization can kill pathogenic microorganisms and spoilage microorganisms in food, it also destroys nutritional ingredients in food, and affects the edible value of food. Compared with the traditional heat sterilization technology, the temperature in the non-heat sterilization process of the food is relatively low, the processing time is short, and the original quality of the food is well maintained.
Photodynamic technology (PDT) is a novel non-thermal sterilization mode based on Photodynamic reaction, and under the excitation of a light source with specific wavelength, a photosensitizer generates singlet oxygen and other active oxygen substances to cause biomolecule oxidation and cell damage. The photosensitizer and the light source are key factors influencing the photodynamic sterilization effect, and the ideal photosensitizer is safe, stable, low in cost and easy to be activated by light with proper wavelength; as a food additive, the food additive must meet the national standards of food additives, is harmless to human bodies and does not destroy the original nutritional ingredients of foods. Photosensitizers for photodynamic disinfection are often excited by ultraviolet and visible light, the light source needs to have a well-defined spectral range, a sensitive boundary illumination area, and also a certain tissue penetration, the light intensity is usually 100-2. Common Light sources include conventional Light sources (such as incandescent lamps and high-voltage arc lamps), laser Light sources, and the like, and with the rapid development of Light Emitting Diodes (LEDs), the conventional Light sources are often used as Light sources of a photodynamic system due to the advantages of safety, reliability, high photoelectric conversion efficiency, small size, easy operation, long service life, and the like.
The existing photodynamic sterilization system is mostly designed in an intermittent production mode, namely, materials are immersed in a photosensitizer solution (or the photosensitizer solution is sprayed on the surface of the materials), the materials are taken out and placed into a treatment chamber, a light source is used for irradiating for a period of time, then the materials are taken out, next material treatment is carried out, the treatment efficiency is low, and continuous production cannot be carried out.
Disclosure of Invention
The invention provides a continuous photodynamic sterilization system, which is used for solving the defects that the photodynamic sterilization system in the prior art has low treatment efficiency and can not be produced continuously.
The invention provides a continuous photodynamic sterilization system, which comprises: the device comprises a box body, a feeding device, a conveying device, a photosensitizer processing device and a light source irradiation device; wherein, the first and the second end of the pipe are connected with each other,
the conveying device, the photosensitizer processing device and the light source irradiation device are all arranged in the box body;
the feeding device is arranged above one end of the conveying device and used for feeding materials to the conveying device;
the photosensitizer treatment device is arranged behind the feeding device and comprises a photosensitizer storage box and a sprayer, and the sprayer is connected to the lower end of the photosensitizer storage box and is positioned above the conveying device;
the light source irradiation device is arranged behind the photosensitizer processing device and comprises a plurality of light source components, and the light source components are arranged along the conveying direction of the conveying device.
The continuous photodynamic sterilization system provided by the invention also comprises a discharging device, wherein the discharging device is arranged below the other end of the conveying device.
According to the continuous photodynamic sterilization system provided by the invention, the feeding device comprises a feed hopper, a kick-out device, a material box and a distributing device, wherein the kick-out device is positioned at the outlet of the material box, the feed hopper is positioned below the kick-out device, and the distributing device is arranged between the discharge end of the feed hopper and the conveying device.
According to the continuous photodynamic sterilization system provided by the invention, the conveying device comprises a driving motor, a driving roller, a driven roller and a conveying belt, wherein an output shaft of the driving motor is in driving connection with the driving roller, and the conveying belt is arranged between the driving roller and the driven roller.
The continuous photodynamic sterilization system further comprises liquid guide tanks and liquid storage tanks, wherein the liquid guide tanks are arranged on two sides of the conveying device and used for recovering the photosensitizer, and outlets of the liquid guide tanks are communicated with the liquid storage tanks.
According to the continuous photodynamic sterilization system provided by the invention, the light source irradiation device further comprises a light source support, a slide rail and a distance measuring mechanism, wherein the slide rail is vertically fixed on the inner wall of the box body, the light source support is arranged on the slide rail in a sliding manner, the light source assembly is arranged on the light source support, and the distance measuring mechanism is arranged at the lower end of the light source support.
According to the continuous photodynamic sterilization system provided by the invention, the light source irradiation device further comprises a temperature sensor, and the temperature sensor is arranged below the light source component.
According to the continuous photodynamic sterilization system provided by the invention, the light source irradiation device further comprises a fan and a radiator, the fan is arranged at the top of the box body, and the radiator is arranged at the top of the light source component.
The continuous photodynamic sterilization system provided by the invention also comprises an electric cabinet, wherein the electric cabinet is respectively and electrically connected with the conveying device, the photosensitizer processing device and the light source irradiation device.
According to the continuous type photodynamic sterilization system provided by the invention, continuous feeding and conveying of food can be realized through the matching of the feeding device and the conveying device, the food on the conveying device is subjected to photosensitizer treatment by the photosensitizer treatment device, and then the food is irradiated by the light source irradiation device, so that the photodynamic sterilization of the food is realized. The continuous photodynamic sterilization system can perform uninterrupted sterilization on food, realize continuous operation and improve the production efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a continuous type photodynamic sterilization system provided by the present invention;
reference numerals:
1: a frame body; 2: a motor; 3: a drive roll;
4: a feed hopper; 5: a kick-out device; 6: a material box;
7: a distributing device; 8: a sprayer; 9: a photosensitizer storage tank;
10: an end cap; 11: an infrared range finder; 12: a box body;
13: a light source holder; 14: a fan; 15: a finned heat sink;
16: an LED lamp group; 17: a slide rail; 18: a temperature sensor;
19: a conveyor belt; 20: a driven roller; 21: a discharge hopper;
22: an electric cabinet; 23: a liquid storage tank; 24: a liquid guide groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
A continuous-type photodynamic sterilization system of the present invention is described below with reference to fig. 1, and includes: a box body 12, a feeding device, a conveying device, a photosensitizer processing device and a light source irradiation device.
Wherein, conveyor, photosensitizer processing apparatus and light source irradiation device all install in box 12, and feed arrangement can set up in the box 12 outside, and the food that will wait to disinfect is sent to in the box 12 through the feed inlet that sets up on the box 12. The housing 12 provides an installation space and an installation fixing position of each device, and constitutes a tunnel type structure.
The feeding device is arranged above one end of the conveying device and used for feeding materials to the conveying device, and continuous feeding of food can be achieved through cooperation of the feeding device and the conveying device.
The photosensitizer processing device is arranged behind the feeding device and comprises a photosensitizer storage tank 9 and a sprayer 8, and the sprayer 8 is connected to the lower end of the photosensitizer storage tank 9 and is positioned above the conveying device. The photosensitizer storage tank 9 stores photosensitizer therein, and the end cap 10 is provided on the top, so that the photosensitizer is sprayed to the food on the conveying device through the sprayer 8, and the food is processed by the photosensitizer.
The light source irradiation device is arranged behind the photosensitizer processing device and comprises a plurality of light source components which are arranged along the conveying direction of the conveying device. The food that is handled through the photosensitizer carries out photodynamic through the light source subassembly and disinfects, and LED lamp etc. are generally selected for use to the light source subassembly, adopt the modularization combination, the dismouting of being convenient for. It should be understood that the wavelength range of the LED lamps is determined according to the characteristics of the food and the photosensitizer, and the appropriate LED lamp set 16 is installed. In this embodiment, in order to obtain uniform illumination in the entire processing area, the system adopts a square array to design the LED light sources, and is equipped with three kinds of LED light sources according to the characteristics of the photosensitizer, which are LED monochromatic light (red) with a wavelength of 700nm, LED monochromatic light (green) with a wavelength of 550nm, and LED monochromatic light (blue) with a wavelength of 470 nm. In order to ensure the illumination effect, a flexible window shade may be provided at the light source.
The continuous photodynamic sterilization system provided by the invention can realize continuous feeding and conveying of food through the matching of the feeding device and the conveying device, the food on the conveying device is subjected to photosensitizer treatment by the photosensitizer treatment device, and then the food is irradiated by the light source irradiation device, so that the photodynamic sterilization of the food is realized. The continuous photodynamic sterilization system can continuously sterilize food, realize continuous operation and improve the production efficiency.
In one embodiment, the continuous photodynamic sterilization system further comprises a discharging device, and the discharging device is arranged below the other end of the conveying device. In this embodiment, the discharging device may adopt a discharging hopper 21, and the sterilized food is discharged from the discharging hopper 21 to the system.
In one embodiment, the feeding device comprises a feeding hopper 4, a kick-out device 5, a material box 6 and a distributing device 7, the kick-out device 5 is positioned at the outlet of the material box 6, the feeding hopper 4 is positioned below the kick-out device 5, and the distributing device 7 is arranged between the discharge end of the feeding hopper 4 and the conveying device. In this embodiment, food is put into the material box 6, and is pushed into the feed hopper 4 by the pusher 5, and is scraped flat by the distributor 7 after passing through the feed hopper 4, and then enters the conveying device. Specifically, the kick-out device 5 can be a spiral kick-out device or the like; the distributing device 7 can be a baffle plate, and a gap for food to pass through is formed between the baffle plate and the feed hopper 4, and the food can be flatly input to the conveying device through the gap.
In one embodiment, the conveying device comprises a driving motor 2, a driving roller 3, a driven roller 20 and a conveying belt 19, wherein an output shaft of the driving motor 2 is in driving connection with the driving roller 3, and the conveying belt 19 is arranged between the driving roller 3 and the driven roller 20. In this embodiment, the conveying device can be supported and installed by the frame bodies 1 arranged at the two ends, the motor 2 provides power to drive the driving roller 3 to rotate, so as to drive the conveying belt 19 to move and drive the driven roller 20 to rotate together. In the embodiment, the conveyor belt 19 mechanism is adopted to continuously convey the food, so that the food can be continuously sterilized.
In one embodiment, the continuous photodynamic sterilization system further comprises a liquid guide groove 24 and a liquid storage groove 23, wherein the liquid guide groove 24 is arranged on two sides of the conveying device and used for recovering the photosensitizer, and the outlet of the liquid guide groove 24 is communicated with the liquid storage groove 23. In this embodiment, the sprayed photosensitizer is recovered by a liquid guiding tank 24, which may be in the form of a chute, disposed on both sides of the conveyor belt 19, and is transported to the liquid storage tank 23 for storage.
In one embodiment, the light source irradiation device further comprises a light source support 13, a slide rail 17 and a distance measuring mechanism, the slide rail 17 is vertically fixed on the inner wall of the box body 12, the light source support 13 is slidably disposed on the slide rail 17, the light source assembly is mounted on the light source support 13, and the distance measuring mechanism is mounted at the lower end of the light source support 13. In this embodiment, through 13 installation light source subassemblies of light source support, light source support 13 can drive the light source subassembly and carry out lifting movement on slide rail 17, and range finding mechanism can record the distance between light source subassembly and the food, carries out automatic measure and location, and then adjusts the high position of light source support 13. Specifically, the distance measuring mechanism may employ an infrared distance meter 11 or the like. It should be understood that the light source bracket 13 in this embodiment may be a power bracket, which may be controlled by a motor to perform the lifting operation.
In one embodiment, the light source irradiation device further comprises a temperature sensor 18, and the temperature sensor 18 is disposed below the light source assembly. In the present embodiment, the heat generated by the light source assembly is monitored by the temperature sensor 18, so as to avoid the influence of excessive heat on the food.
Further, the light source irradiation device further comprises a fan 14 and a heat sink, wherein the fan 14 is mounted at the top of the box body 12, and the heat sink is mounted at the top of the light source assembly. In this embodiment, if the temperature sensor 18 detects that the temperature exceeds the set value, the fan 14 can be turned on to dissipate heat, and the heat sink can use the fin-type heat sink 15 to dissipate heat from the light source assembly, so as to increase the heat dissipation area and avoid the influence on the food due to the temperature rise caused by illumination.
In one embodiment, the continuous photodynamic sterilization system further comprises an electric cabinet 22, and the electric cabinet 22 is electrically connected with the conveying device, the photosensitizer processing device and the light source irradiation device respectively. In this embodiment, the electric control box 22 is used to control the operation of the system, specifically: the electric cabinet 22 is connected with the motor 2 and can control the start and stop of the conveying device; the electric cabinet 22 is connected with the sprayer 8 and is used for controlling the spraying of the photosensitizer; the electric cabinet 22 is connected with the temperature sensor 18 and the fan 14, and can control the starting and stopping of the fan 14 to ensure that food is at an appropriate temperature and avoid damaging original nutritional ingredients of the food due to high temperature; the electric cabinet 22 and the light source component can control the on and off of the light source and adjust the illumination time of the food; the electric cabinet 22 is connected with the distance measuring mechanism, and the distance between the light source assembly and the food is judged, so that the light source support 13 is adjusted to perform lifting movement, and the illumination distance of the food is adjusted.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A continuous photodynamic sterilization system comprising: the device comprises a box body, a feeding device, a conveying device, a photosensitizer processing device and a light source irradiation device; wherein, the first and the second end of the pipe are connected with each other,
the conveying device, the photosensitizer processing device and the light source irradiation device are all arranged in the box body;
the feeding device is arranged above one end of the conveying device and used for feeding materials to the conveying device;
the photosensitizer treatment device is arranged behind the feeding device and comprises a photosensitizer storage box and a sprayer, and the sprayer is connected to the lower end of the photosensitizer storage box and is positioned above the conveying device;
the light source irradiation device is arranged behind the photosensitizer processing device and comprises a plurality of light source components, and the light source components are arranged along the conveying direction of the conveying device.
2. The continuous photodynamic sterilization system of claim 1 further comprising an outfeed device mounted below the other end of the conveyor.
3. The continuous photodynamic sterilization system as claimed in claim 1, wherein the feeding device comprises a feed hopper, a kick-out device, a material box and a distributor, the kick-out device is located at an outlet of the material box, the feed hopper is located below the kick-out device, and the distributor is arranged between a discharge end of the feed hopper and the conveying device.
4. The continuous type photodynamic sterilization system according to claim 1, wherein the conveying device comprises a driving motor, a driving roller, a driven roller and a conveyor belt, an output shaft of the driving motor is in driving connection with the driving roller, and the conveyor belt is arranged between the driving roller and the driven roller.
5. The continuous photodynamic sterilization system as claimed in claim 1, further comprising a liquid guiding tank and a liquid storage tank, wherein the liquid guiding tank is arranged on both sides of the conveying device and used for recovering the photosensitizer, and an outlet of the liquid guiding tank is communicated with the liquid storage tank.
6. The continuous photodynamic sterilization system as recited in claim 1, wherein the light source irradiation device further comprises a light source support, a slide rail and a distance measuring mechanism, the slide rail is vertically fixed on the inner wall of the box body, the light source support is slidably arranged on the slide rail, the light source assembly is arranged on the light source support, and the distance measuring mechanism is arranged at the lower end of the light source support.
7. The continuous-type photodynamic sterilization system according to claim 1, wherein the light source irradiation device further comprises a temperature sensor, and the temperature sensor is arranged below the light source component.
8. The continuous type photodynamic sterilization system as claimed in claim 7, wherein the light source irradiation device further comprises a fan and a heat sink, the fan is mounted on the top of the box body, and the heat sink is mounted on the top of the light source assembly.
9. The continuous type photodynamic sterilization system according to claim 1, further comprising an electric control box, wherein the electric control box is electrically connected with the conveying device, the photosensitizer processing device and the light source irradiation device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053717.2A CN114762518A (en) | 2021-01-15 | 2021-01-15 | Continuous photodynamic sterilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110053717.2A CN114762518A (en) | 2021-01-15 | 2021-01-15 | Continuous photodynamic sterilization system |
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| Publication Number | Publication Date |
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| CN114762518A true CN114762518A (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110053717.2A Pending CN114762518A (en) | 2021-01-15 | 2021-01-15 | Continuous photodynamic sterilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500357A (en) * | 2022-10-13 | 2022-12-23 | 深圳市儿童医院 | Photosensitive bactericide based on berberine derivative |
-
2021
- 2021-01-15 CN CN202110053717.2A patent/CN114762518A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500357A (en) * | 2022-10-13 | 2022-12-23 | 深圳市儿童医院 | Photosensitive bactericide based on berberine derivative |
| CN115500357B (en) * | 2022-10-13 | 2024-03-26 | 深圳市儿童医院 | Photosensitive bactericide based on berberine derivative |
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