CN114052160A - Plasma sterilization device and sterilization method - Google Patents
Plasma sterilization device and sterilization method Download PDFInfo
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- CN114052160A CN114052160A CN202010750779.4A CN202010750779A CN114052160A CN 114052160 A CN114052160 A CN 114052160A CN 202010750779 A CN202010750779 A CN 202010750779A CN 114052160 A CN114052160 A CN 114052160A
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 189
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000007664 blowing Methods 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052721 tungsten Inorganic materials 0.000 claims description 12
- 239000010937 tungsten Substances 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 9
- 238000005243 fluidization Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000036470 plasma concentration Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 230000035764 nutrition Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 238000005215 recombination Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- A23L3/263—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating with corpuscular or ionising radiation, i.e. X, alpha, beta or omega radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Epidemiology (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Toxicology (AREA)
- Nutrition Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention relates to the technical field of sterilization equipment, and discloses a plasma sterilization device and a sterilization method, wherein the sterilization device comprises: a sterilization chamber and a plasma generating device; the plasma generating device is installed in the sterilization storehouse, and a plurality of mouths of blowing have been seted up to the bottom in sterilization storehouse, and the mouth of blowing is used for blowing to sterilization storehouse inside and makes the material in sterilization storehouse be in the fluidization state. According to the plasma sterilization device and the sterilization method provided by the invention, the blowing port is arranged for blowing air, so that the material is sterilized in a fluidized state, compared with the mode that the existing plasma sterilization equipment is in contact with a material fixing surface, the material can be sterilized in all directions without dead angles, and the advantages of high efficiency, all-direction sterilization and the like are achieved; and the plasma generating device does not need to be contacted with materials, thereby solving the problems of high pollution, incomplete sterilization and the like of the existing sterilization and disinfection method.
Description
Technical Field
The invention relates to the technical field of sterilization equipment, in particular to a plasma sterilization device and a sterilization method.
Background
The sterilization technology is a necessary technology in the food industry and the medicine field, and the sterilization refers to a process of killing or removing all microorganisms in the external environment; most of the sterilization methods used today are thermal sterilization, radiation sterilization, ethylene oxide sterilization, low-temperature formaldehyde steam sterilization, and soaking methods using various sterilizing agents such as glutaraldehyde, chlorine dioxide, peracetic acid, and hydrogen peroxide for a long time, and these sterilization methods have many limitations such as environmental damage, too long sterilization time, and too high sterilization temperature resulting in loss of nutrition in food.
Plasma sterilization has been increasingly popularized and applied in recent years as a novel sterilization technology. In the plasma state, a series of physical and chemical changes, such as electron exchange, electron energy conversion, molecular collision, chemical dissociation and recombination, occur to the substances, and the changes enable the ionized gas cloud to generate charged cloud-like substances synthesized by electrons, ions and neutrals, wherein the substances contain molecules, excited-state atoms, metastable-state atoms, free radicals and other particles, as well as ultraviolet rays, gamma rays and beta rays. But the prior plasma sterilization equipment needs to be contacted with a food fixing surface, thereby causing the problems of incomplete sterilization and the like.
Disclosure of Invention
The embodiment of the invention provides a plasma sterilization device and a plasma sterilization method, which are used for solving or partially solving the problems that in the prior art, plasma sterilization equipment needs to be in contact with a food fixing surface, so that the sterilization is incomplete and the like.
The embodiment of the invention provides a plasma sterilization device, which comprises: a sterilization chamber and a plasma generating device; the plasma generating device is arranged in the sterilization bin, the bottom of the sterilization bin is provided with a blowing port, and the blowing port is used for blowing air into the sterilization bin to enable materials in the sterilization bin to be in a fluidized state.
On the basis of the scheme, the top of the sterilization bin is provided with a feeding hole, and the bottom of the sterilization bin is provided with a discharging hole.
On the basis of the scheme, a conveying device is correspondingly arranged above the feeding hole, and a feeding bin is arranged above the conveying device.
On the basis of the scheme, door bodies are respectively arranged at the feed inlet and the discharge outlet.
On the basis of the scheme, the top of the sterilization bin is provided with an air outlet, the air outlet is connected with a dust removal device through a pipeline, and an outlet of the dust removal device is correspondingly provided with a collection box.
On the basis of the scheme, the air outlet is provided with a filtering piece.
On the basis of the scheme, the plasma generating device comprises an upper electrode mounting plate, a tungsten needle and a lower electrode plate; the upper electrode mounting plate and the lower electrode plate are fixed on two opposite side walls of the sterilization bin, and the tungsten needle penetrates through the upper electrode mounting plate and is inserted into the sterilization bin.
On the basis of the scheme, the tungsten needle is fixed on the upper electrode mounting plate through an opening screw plug.
On the basis of the scheme, the upper electrode mounting plate and the lower electrode plate are respectively fixed on the side wall of the sterilization bin through bolt assemblies.
The embodiment of the invention also provides a plasma sterilization method based on the plasma sterilization device, which comprises the following steps: starting a plasma generating device to form plasma with preset concentration in the sterilizing bin; feeding the materials to be sterilized into the sterilization bin, and blowing air from the bottom of the sterilization bin to perform fluidized sterilization on the materials; continuously feeding materials into the sterilization bin, and continuously discharging the sterilized materials from the air outlet; or feeding a preset amount of materials into the sterilization bin, and discharging the materials from the discharge hole after the materials are sterilized in a fluidized state for a preset time.
According to the plasma sterilization device and the sterilization method provided by the embodiment of the invention, the blowing port is arranged for blowing air, so that the material is sterilized in a fluidized state, compared with the mode that the existing plasma sterilization equipment is contacted with a material fixing surface, the material can be sterilized in all directions without dead angles, and the plasma sterilization device and the sterilization method have the advantages of high efficiency, all-direction sterilization and the like; and the plasma generating device does not need to be contacted with materials, thereby solving the problems of high pollution, incomplete sterilization and the like of the existing sterilization and disinfection method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in 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 plasma sterilization apparatus according to an embodiment of the present invention.
Reference numerals:
1. a feeding bin; 2. a conveying device; 3. a sterilization bin; 4. a bolt assembly; 5. a lower electrode plate; 6. an open screw plug; 7. a tungsten needle; 8. a blower; 9. a discharge port; 10. a feed inlet; 11. an upper electrode mounting plate; 12. an air outlet; 13. a dust removal device; 14. an induced draft fan; 15. and a collection box.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a plasma sterilization apparatus, including: a sterilization chamber 3 and a plasma generating device; the plasma generating device is installed in sterilization storehouse 3, and a plurality of mouths of blowing have been seted up to the bottom in sterilization storehouse 3, and the mouth of blowing is used for blowing to sterilization storehouse 3 inside and makes the material in sterilization storehouse 3 inside be in the fluidization state.
The sterilization bin 3 is used for providing a sterilization accommodating space. The material to be sterilized is sterilized in the sterilization chamber 3. The plasma generating device is used for generating plasma in the sterilizing chamber 3, so that a plasma environment is formed inside the sterilizing chamber 3. When the materials to be sterilized are sent to the sterilization bin 3, the air blowing port at the bottom of the sterilization bin 3 blows air to enable the materials to be in a flowing state and form a fluidized state; so that the material is sterilized in a fluidized state.
According to the plasma sterilization device provided by the embodiment, the blowing port is arranged for blowing air, so that the material is sterilized in a fluidized state, compared with the mode that the existing plasma sterilization equipment is in contact with a material fixing surface, the device can sterilize the material in all directions without dead angles, and has the advantages of high efficiency, all-direction sterilization and the like; and the plasma generating device does not need to be contacted with materials, thereby solving the problems of high pollution, incomplete sterilization and the like of the existing sterilization and disinfection method.
On the basis of the above embodiment, further, the top of the sterilization chamber 3 is provided with a feeding hole 10, and the bottom of the sterilization chamber 3 is provided with a discharging hole 9. The material to be sterilized enters from a feed inlet 10 at the top of the sterilization bin 3, and the sterilized material is discharged from a discharge outlet 9 at the bottom of the sterilization bin 3. The feeding hole 10 is arranged at the top of the sterilizing bin 3, so that the material falling and the upward blowing at the bottom are favorably impacted, and the fluidized state of the material is favorably formed. The discharge port 9 is arranged at the bottom of the sterilizing bin 3, so that the materials can be discharged by utilizing the self gravity of the materials conveniently.
Further, referring to fig. 1, the discharge hole 9 may be disposed on the bottom wall of the sterilization chamber 3; can also be arranged on the side wall at the bottom of the sterilization bin 3 and can be flexibly arranged according to the actual situation so as to realize the discharge of the materials, and the device is not limited specifically. Further, the discharge port 9 can be connected with a conveying power source through a pipeline, such as a fan, for providing power for discharging the material, so as to ensure smooth discharge of the material.
On the basis of the above embodiment, further, a conveying device 2 is correspondingly arranged above the feeding port 10, and a feeding bin 1 is arranged above the conveying device 2. The feeding bin 1 is used for storing materials to be sterilized. When the materials are sterilized, a certain amount of materials can be discharged from the feeding bin 1, are conveyed to the feeding hole 10 of the sterilizing bin 3 through the conveying device 2, and then enter the sterilizing bin 3 to be sterilized.
Further, the conveying device 2 may be a conveyor belt, or may be other, such as a screw conveyor, etc., and is not limited specifically, so as to achieve the purpose of conveying the material. Further, referring to fig. 1, the conveyor 2 may be arranged obliquely, so that the end of the conveyor 2 is closer to the feeding hole 10, and the material can smoothly enter the feeding hole 10.
On the basis of the above embodiment, further, door bodies are respectively arranged at the feed inlet 10 and the discharge outlet 9. The opening and closing of the feed inlet 10 and the discharge outlet 9 are realized. Can be set as an automatic door, and is convenient to control.
On the basis of the above embodiment, further, the top of the sterilizing chamber 3 is provided with an air outlet 12; the air outlet 12 is connected with a dust removing device 13 through a pipeline. The outlet of the dust removing device 13 is correspondingly provided with a collecting box 15. Specifically, referring to fig. 1, a plurality of air outlets 12 may be formed at the top of the sterilization chamber 3, the air outlets 12 are connected to an air outlet pipeline, and a dust removing device 13 and an induced draft fan 14 are connected in series to the air outlet pipeline. The draught fan 14 is used for providing air-out power to maintain the pressure stability inside the sterilization bin. And under the drive of the induced draft fan 14, the materials in the sterilization bin 3 can be carried out and led out from the air outlet 12, and then are separated and collected in the collection box 15 at the dust removal device 13. Thus, the air outlet 12 can also play a role of discharging.
Further, a filter is arranged at the air outlet 12. The filtering piece can be a filter screen and the like; the filtering device is used for filtering materials in the sterilizing bin 3 while ensuring ventilation, so that the materials cannot flow into the air outlet 12.
When no filter element is arranged at the air outlet 12, the materials can be continuously discharged from the air outlet 12, so that continuous sterilization operation on the materials can be realized. The materials can be continuously fed into the sterilizing bin 3 for sterilizing operation. At this time, the discharge time and speed can be controlled by controlling the operation of the induced draft fan 14 or connecting a valve at the air outlet 14.
When the air outlet 12 is provided with the filter element, the material cannot be discharged from the air outlet 12. At this time, the intermittent sterilization operation of the materials can be realized. And a certain amount of materials can be fed into the sterilization bin every time for sterilization operation. When sterilization is completed, the discharge port 10 can be opened to discharge the material. Therefore, the sterilization device can realize continuous sterilization operation and intermittent sterilization operation, can be flexibly selected according to actual needs, and has strong adaptability.
On the basis of the above embodiment, further, the plasma generating device includes an upper electrode mounting plate 11, a tungsten needle 7 and a lower electrode plate 5; the upper electrode mounting plate 11 and the lower electrode plate 5 are fixed on two opposite side walls of the sterilization chamber 3, and the tungsten needle 7 penetrates through the upper electrode mounting plate 11 and is inserted into the sterilization chamber 3.
The upper electrode mounting plate 11 and the lower electrode plate 5 are oppositely arranged. Specifically, the upper electrode mounting plate 11 can be arranged on the inner side or the outer side of the side wall of the sterilization bin 3; the lower electrode plate 5 can also be arranged on the inner side or the outer side of the side wall of the sterilization bin 3; and are not limited.
In addition to the above embodiment, the tungsten needle 7 is further fixed to the upper electrode mounting plate 11 by the split screw 6. The opening screw plug 6 has a through hole therein. The split screw plug 6 is fixed on the upper electrode mounting plate 11, and can be connected with the upper electrode mounting plate by screw threads or welding without limitation. The tungsten needle 7 passes through a through hole inside the opening screw plug 6.
On the basis of the above embodiment, further, the upper electrode mounting plate 11 and the lower electrode plate 5 are respectively fixed on the side wall of the sterilization chamber 3 by the bolt assembly 4. Specifically, referring to fig. 1, a long bolt may be arranged to traverse the sterilization chamber 3, and both ends of the long bolt respectively pass through the upper electrode mounting plate 11 and the lower electrode plate 5; then, nuts are respectively connected to two sides of the upper electrode mounting plate 11 and two sides of the lower electrode plate 5, so that the upper electrode mounting plate 11 and the lower electrode plate 5 are fixed.
Furthermore, two independent groups of short bolts can be respectively arranged at the upper electrode mounting plate 11 and the lower electrode plate 5 to realize fixation; the specific form of the bolt assembly 4 is not limited to achieve the fixing purpose of the upper electrode mounting plate 11 and the lower electrode plate 5.
Further, the plasma generating apparatus is not limited to the electrode form. All devices capable of generating low-temperature plasma can be used for generating low-temperature plasma in the sterilization chamber.
In addition to the above embodiments, a plurality of air blowing ports are further provided at the bottom of the sterilization chamber. The air blowing openings are connected to an air duct, and an air blower 8 is arranged on the air duct. Air is blown simultaneously to the plurality of air blowing ports by the blower 8.
A plurality of air blowing openings can be evenly distributed on the bottom wall of the sterilization bin 3 to improve the uniformity of fluidization of the materials. The blowing opening can also be provided with a door body. During sterilization, the door body can be opened to realize air blowing; when the sterilization is finished, the door body can be closed to prevent the materials from falling into the air blowing port.
Further, the air blown in from the air blowing opening is sterilizing gas; can be air after sterilization and purification, also can be other gases, can be selected according to the material to be sterilized, and aims to not influence the sterilization effect.
In addition to the foregoing embodiments, the present embodiment further provides a plasma sterilization method based on the plasma sterilization apparatus according to any of the foregoing embodiments, the plasma sterilization method including: starting a plasma generating device to form plasma with preset concentration in the sterilizing bin 3; feeding the materials to be sterilized into the sterilization bin 3, and blowing air from the bottom of the sterilization bin 3 to perform fluidized sterilization on the materials; continuously feeding materials into the sterilizing bin 3, and continuously discharging the sterilized materials from the air outlet 12; or a preset amount of materials are fed into the sterilization bin 3, and the materials are discharged from the discharge hole 10 after the materials are sterilized in a fluidized state for a preset time.
Namely, the plasma sterilization device has two sterilization modes, and can realize continuous feeding sterilization operation through the discharge of the air outlet so as to improve the sterilization efficiency and increase the sterilization treatment capacity; and the intermittent feeding and sterilization operation can be realized through discharging at the discharging port so as to enhance the sterilization effect.
On the basis of the above embodiment, further, according to the physical properties of the materials to be sterilized, the air quantity and the air speed of the air blown from the bottom of the sterilization bin 3 are adjusted. The physical properties of the material to be sterilized include in particular the particle size, weight, viscosity etc. parameters of the material. The air quantity and the air speed of the air blown from the bottom of the sterilizing bin 3 are controlled and adjusted, so that the sterilizing bin is suitable for the materials to be sterilized, and the aim of forming the fluidized state of the materials is fulfilled.
Further, the method is carried out. A plasma concentration monitoring sensor can be arranged in the sterilization bin 3; so as to ensure that the plasma concentration in the sterilization chamber 3 is within the preset concentration range, thereby ensuring the sterilization effect. The desired plasma concentration range may be determined based on the nature of the material to be sterilized and the specific sterilization requirements.
On the basis of the above embodiments, further, aiming at the defects of the prior art, the embodiment provides a low-temperature plasma fluidizing sterilization device, which can sterilize in all directions without dead angles, has the advantages of high efficiency, all-direction sterilization and the like, and solves the problems of high pollution, incomplete sterilization and the like of the existing sterilization and disinfection method. In order to realize the above-mentioned high-efficient, all-round sterilization effect, this embodiment provides the following technical scheme: a low-temperature plasma fluidization sterilization device comprises: the device comprises a sterilization bin 3, a food or article conveying device 2, a plasma generating device, a feeding hole 10, a discharging hole 9, a blower 8 and a feeding bin 1.
The plasma generating device comprises a bolt assembly 4, a lower electrode plate 5, an opening screw plug 6, a tungsten needle 7 and an upper electrode mounting plate 11; the feed door and the discharge door of the sterilization bin 3 which can be opened and closed are automatic doors. The bottom end of the sterilization bin 3 is provided with an air blower 8, so that particles to be sterilized can be in fluidized motion in the atmosphere of generating low-temperature plasma. The sterilizing chamber 3 has a reserved interface for installing a plasma generating device.
The specific operation process of the sterilization device is as follows: food particles to be sterilized are placed in the feeding bin 1, the low-temperature plasma generating device is started for a period of time, low-temperature plasma with a certain concentration is generated in the sterilizing bin 3, the conveying belt is started, the feeding port 10 is opened, the air blower 8 is started simultaneously, under the sweeping action of the air blower 8, the food particles to be sterilized are in all-dimensional dead-angle-free contact with the low-temperature plasma for a period of time when the sterilizing bin 3 is in a fluidized form, the automatic door of the discharging port 9 is opened, and the sterilized food particles are taken out.
In the embodiment, the low-temperature plasma fluidization sterilization device is utilized, under the action of the blower 8 and the low-temperature plasma in the sterilization process, food or articles to be sterilized can be in all directions, no dead angle is contacted with the plasma, and compared with the existing device which is static on a material tray, the sterilization effect is more thorough.
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 (10)
1. A plasma sterilization device, comprising: a sterilization chamber and a plasma generating device; the plasma generating device is arranged in the sterilization bin, the bottom of the sterilization bin is provided with a blowing port, and the blowing port is used for blowing air into the sterilization bin to enable materials in the sterilization bin to be in a fluidized state.
2. The plasma sterilization device according to claim 1, wherein a feed inlet is arranged at the top of the sterilization chamber, and a discharge outlet is arranged at the bottom of the sterilization chamber.
3. The plasma sterilization device according to claim 2, wherein a conveying device is correspondingly arranged above the feeding hole, and a feeding bin is arranged above the conveying device.
4. The plasma sterilization device according to claim 2, wherein a door body is respectively arranged at the feed inlet and the discharge outlet.
5. A plasma sterilization device as defined in any one of claims 1 to 4, wherein an air outlet is provided at the top of the sterilization chamber, the air outlet is connected with a dust removal device through a pipe, and a collection box is correspondingly provided at the outlet of the dust removal device.
6. A plasma sterilisation apparatus according to claim 5, wherein a filter is provided at the air outlet.
7. The plasma sterilization apparatus according to any one of claims 1 to 4, wherein the plasma generation apparatus comprises an upper electrode mounting plate, a tungsten needle, and a lower electrode plate; the upper electrode mounting plate and the lower electrode plate are fixed on two opposite side walls of the sterilization bin, and the tungsten needle penetrates through the upper electrode mounting plate and is inserted into the sterilization bin.
8. The plasma sterilization apparatus as recited in claim 7, wherein the tungsten needle is fixed to the upper electrode mounting plate by a split screw.
9. The plasma sterilization apparatus according to claim 7, wherein the upper electrode mounting plate and the lower electrode plate are respectively fixed to the side wall of the sterilization chamber by a bolt assembly.
10. A plasma sterilization method based on the plasma sterilization apparatus according to any one of claims 1 to 9, comprising:
starting a plasma generating device to form plasma with preset concentration in the sterilizing bin;
feeding the materials to be sterilized into the sterilization bin, and blowing air from the bottom of the sterilization bin to perform fluidized sterilization on the materials;
continuously feeding materials into the sterilization bin, and continuously discharging the sterilized materials from the air outlet; or feeding a preset amount of materials into the sterilization bin, and discharging the materials from the discharge hole after the materials are sterilized in a fluidized state for a preset time.
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| CN202010750779.4A CN114052160A (en) | 2020-07-30 | 2020-07-30 | Plasma sterilization device and sterilization method |
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| CN202010750779.4A CN114052160A (en) | 2020-07-30 | 2020-07-30 | Plasma sterilization device and sterilization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903138A (en) * | 2022-05-17 | 2022-08-16 | 安徽中科大禹科技有限公司 | Plasma sterilization equipment for food processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903138A (en) * | 2022-05-17 | 2022-08-16 | 安徽中科大禹科技有限公司 | Plasma sterilization equipment for food processing |
| CN114903138B (en) * | 2022-05-17 | 2023-08-01 | 安徽中科大禹科技有限公司 | Plasma sterilizing equipment for food processing |
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