CN113428824B - Sterilizing device for PET bottle blank by ray irradiation coupling gaseous hydrogen peroxide - Google Patents
Sterilizing device for PET bottle blank by ray irradiation coupling gaseous hydrogen peroxide Download PDFInfo
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- CN113428824B CN113428824B CN202110727246.9A CN202110727246A CN113428824B CN 113428824 B CN113428824 B CN 113428824B CN 202110727246 A CN202110727246 A CN 202110727246A CN 113428824 B CN113428824 B CN 113428824B
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- hydrogen peroxide
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- gaseous hydrogen
- bottle blank
- sterilization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations
- B67C7/0006—Conveying; Synchronising
- B67C7/004—Conveying; Synchronising the containers travelling along a circular path
- B67C7/0046—Infeed and outfeed devices
- B67C7/0053—Infeed and outfeed devices using grippers
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- 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
- A61L2/04—Heat
-
- 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
- A61L2/08—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
- A61L2/08—Radiation
- A61L2/087—Particle radiation, e.g. electron-beam, alpha or beta 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
- A61L2/08—Radiation
- A61L2/10—Ultra-violet 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
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/208—Hydrogen peroxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations
- B67C7/0073—Sterilising, aseptic filling and closing
Abstract
The invention discloses a sterilization device for PET bottle blanks by ray irradiation coupling gaseous hydrogen peroxide, which comprises a bottle blank conveying track, a ray irradiation sterilization section, a gaseous hydrogen peroxide sterilization section and a heating section, wherein the bottle blanks sequentially enter the ray irradiation sterilization section, the gaseous hydrogen peroxide sterilization section and the heating section through the bottle blank conveying track to complete comprehensive sterilization, and the ray irradiation pre-sterilization section sterilizes the outside of the bottle blanks; the gaseous hydrogen peroxide sterilization section is used for sterilizing the neck and the interior of the bottle blank; the heating section is used for accelerating the removal of ozone generated by ray irradiation, and activating the gaseous hydrogen peroxide attached to the bottle blank so as to further increase the sterilization effect and accelerate the volatilization of the gaseous hydrogen peroxide. The invention couples the ray irradiation with the gaseous hydrogen peroxide, respectively aims at the outer surface of the bottle blank, the inner part of the bottle blank and the neck of the bottle blank, achieves the synergistic effect, has high sterilization efficiency, ensures the sterile state of the bottle blank, reduces the physical sterilization energy consumption, reduces the consumption of the gaseous hydrogen peroxide and reduces the residual risk of the hydrogen peroxide.
Description
Technical Field
The invention relates to the technical field of aseptic filling of liquid beverages, in particular to a sterilizing device for PET bottle blanks by coupling ray irradiation with gaseous hydrogen peroxide.
Background
The PET bottle is a plastic packaging bottle which is made of Polyethylene terephthalate (PET for short) polyester as a raw material through injection molding and blowing, is widely applied to the field of beverage packaging, and becomes the packaging material with the highest development speed in the field of food and beverage. The PET aseptic filling technology is a modern beverage filling production technology which is developed and matured in recent decades and integrates a plurality of high and new technologies such as a light collection electromechanical integration technology, modern chemistry, physics, microbiology, automatic control, computer communication and the like, and in recent years, the PET aseptic filling technology is gradually developed into main production modes such as tea, fruit juice, protein beverage and the like through continuous innovation and development and continuous improvement of an industrial chain.
The sterilization of the PET bottle preform is the most critical step in the PET aseptic filling process, and the sterilization process needs to effectively kill microorganisms on the bottle preform, no chemical reagent residue is left after cleaning, and the sterilization process does not influence the physical and chemical properties of the PET bottle preform. At present, the bottle blank sterilization modes in the aseptic filling production process of PET mainly comprise peracetic acid wet sterilization, hydrogen peroxide dry sterilization, ray irradiation (such as high-energy electron beam irradiation, pulsed intense light irradiation, ultraviolet irradiation, infrared irradiation and the like) sterilization and the like. Wherein, the traditional PET aseptic filling production line mostly adopts peroxyacetic acid wet sterilization, which means that the inside and the outside of a bottle blank are continuously sprayed by adopting a peroxyacetic acid solution with the concentration of 1800 plus 2000ppm for sterilization, and the bottle blank is washed by sterile water until the residual amount of the peroxyacetic acid is below 0.5ppm, the method has high sterilization efficiency, but easily causes solvent residue, needs a large amount of sterile water for washing, and has high energy consumption; the gaseous hydrogen peroxide sterilization is to utilize the strong oxidizing property to form free hydroxyl and active derivatives with strong oxidizing capability, and the purpose of sterilization is achieved by destroying the external structure of the microorganism, causing the osmotic pressure of the microorganism cells to change and die, and destroying the DNA in the microorganism cells to die. The application of liquid hydrogen peroxide as a green and environmentally friendly disinfectant has been studied for over 100 years, but liquid hydrogen peroxide requires higher concentration and longer contact time to kill all microorganisms.
In the prior art, CN10492210A discloses a bottle blank sterilization device, in which a through hole and a connecting pipe are arranged on a rotating wheel, and a sterilization liquid is injected into a bottle blank for sterilization; CN 111632169A invented a bottle blank sterilization device, which adopts corresponding sterilization channels such as liquid distribution tray, nozzle assembly, etc., and can go deep into the bottom of the bottle blank for sterilization. Both of the above-mentioned two sterilization apparatuses sterilize only the inside of the preform, and do not sterilize the neck and the outside of the preform, and thus cannot ensure the aseptic state of the preform.
To sum up, how to realize disinfecting comprehensively to the bottle base, and how to repeat to the difficult microorganism that kills of bottle base neck screw department and disinfect, guarantee the sterile condition of bottle base, energy resource consumption when reducing the physics and disinfecting reduces gaseous hydrogen peroxide's quantity simultaneously, reduces the remaining risk of hydrogen peroxide, has become the problem that needs to solve urgently.
Disclosure of Invention
In order to overcome a series of defects in the prior art, the invention aims to provide a sterilization device for PET bottle blanks by coupling ray irradiation with gaseous hydrogen peroxide, which comprises a bottle blank conveying track 1, a ray irradiation sterilization section, a gaseous hydrogen peroxide sterilization section and a heating section, and is characterized in that bottle blanks 9 sequentially enter the ray irradiation sterilization section, the gaseous hydrogen peroxide sterilization section and the heating section through the bottle blank conveying track 1 to complete comprehensive sterilization, wherein,
the ray irradiation pre-sterilization section carries out external sterilization on the bottle blank 9;
the gaseous hydrogen peroxide sterilization section sterilizes the neck and the interior of the bottle blank 9;
the heating section is used for accelerating the removal of ozone generated by the ray irradiation and activating the gaseous hydrogen peroxide attached to the bottle blank 9 so as to further increase the sterilization effect and accelerate the volatilization of the gaseous hydrogen peroxide.
Preferably, the radiation pre-sterilization section comprises a radiation generating device 4, a bottle blank conveying star wheel 2, a bottle blank overturning support guide rail 3, a bottle blank gripper I6 and a bottle blank overturning support member 15, the bottle blank gripper I6 is fixedly connected with the bottle blank overturning support member 15, the bottle blank overturning support member 15 is in sliding connection with the bottle blank overturning support guide rail 3, and the bottle blank overturning support member 15 slides along the bottle blank overturning support guide rail 3 under the driving of the bottle blank conveying star wheel 2; starting from the grabbing of the neck of the bottle blank 9 by the bottle blank grabbing hand I6, the bottle blank overturning supporting member 15 drives the outer end of the bottle blank grabbing hand I6 to gradually rotate upwards under the action of the bottle blank overturning supporting guide rail 3 so as to drive the bottle blank 9 to gradually overturn from the vertical direction to the horizontal direction, the bottle blank 9 in the horizontal direction enters the ray generating device 4 to enable the outer surface 9a of the bottle blank to receive ray irradiation, the bottle blank 9 leaving the ray generating device 4 gradually overturns to the vertical direction under the action of the bottle blank overturning supporting member 15 and the bottle blank overturning supporting guide rail 3, and then the bottle blank is conveyed to the gaseous hydrogen peroxide sterilization section.
Preferably, an isolation cover 5 is arranged outside the ray generating device 4, and the isolation cover 5 is used for realizing isolation from the outside, so that the loss of ray irradiation energy and the radiation damage of ray irradiation to operators are avoided; the ray generating device is positioned at the upper position inside the shielding case 5, and when the bottle blank 9 enters the ray generating device 4, the ray generating device 4 is positioned right above the bottle blank 9.
Preferably, the radiation irradiation of the radiation generating device 4 includes any one of electron beam irradiation, ultraviolet irradiation, or pulsed strong light irradiation.
Preferably, a conveying rotary table I12 and a conveying rotary table II are respectively arranged at the inlet and the outlet of the ray irradiation pre-sterilization section, blank clamping grooves matched with the appearance of the bottle blanks 9 are formed in the side surfaces of the conveying rotary table I12 and the conveying rotary table II at equal intervals, the conveying rotary table I12 is used for conveying the bottle blanks 9 on the bottle blank conveying rail 1 into the ray irradiation pre-sterilization section, and the conveying rotary table II is used for conveying the bottle blanks 9 subjected to ray irradiation sterilization out of the ray irradiation pre-sterilization section.
Preferably, the gaseous hydrogen peroxide sterilization section comprises a connecting pipe lifting groove, a bottle blank gripper III, a gaseous hydrogen peroxide generation device 7, a gaseous hydrogen peroxide connecting pipe 8, a hydrogen peroxide sterilization closed cavity 10, a gaseous hydrogen peroxide pipeline 17, a gaseous hydrogen peroxide extension pipe 18 and a gaseous hydrogen peroxide guide pipe 19, wherein the gaseous hydrogen peroxide connecting pipe 8 slides in the connecting pipe lifting groove, the hydrogen peroxide sterilization closed cavity 10 is connected to the lower end of the gaseous hydrogen peroxide connecting pipe 8, a plurality of micropores 16 are uniformly formed in the inner wall of the hydrogen peroxide sterilization closed cavity 10, the micropore 16 at the top center position of the inner wall of the hydrogen peroxide sterilization closed cavity 10 is communicated with the gaseous hydrogen peroxide extension pipe 18, a nozzle 20 is formed at the lower end of the gaseous hydrogen peroxide extension pipe 18, and the gaseous hydrogen peroxide is conveyed to the hydrogen peroxide sterilization closed cavity 10 through the gaseous hydrogen peroxide pipeline 17 and the gaseous hydrogen peroxide guide pipe 19, the inner wall of the closed cavity 10 is sterilized through hydrogen peroxide, and the micropores 16 on the inner wall are sprayed to the inner surface 9b of the bottle blank and the neck 9c of the bottle blank, and simultaneously, the gaseous hydrogen peroxide is sprayed to the inner surface 9b of the bottle blank through the nozzle 20, so that the bottom of the bottle blank 9 is ensured to be fully contacted with the gaseous hydrogen peroxide, and the sterilization efficiency is ensured.
Preferably, the bottle blank grippers III rotate around the axis of the gaseous hydrogen peroxide generator 7 and are uniformly distributed, the bottle blank grippers III correspond to the gaseous hydrogen peroxide connecting pipes 8 one by one and rotate coaxially and synchronously, the gaseous hydrogen peroxide connecting pipes 8 are positioned right above the bottle blank grippers III, when the bottle blank grippers III grip the bottle blank 9, the lowest end of the gaseous hydrogen peroxide extension pipe 18 is positioned right above the opening of the bottle blank 9, the gaseous hydrogen peroxide connecting pipes 8 gradually descend along with the rotation of the bottle blank grippers III, the hydrogen peroxide sterilization closed cavity 10 gradually covers the neck 9c of the bottle blank, and the gaseous hydrogen peroxide extension pipe 18 gradually extends into the inner surface 9b of the bottle blank; when the hydrogen peroxide sterilization closed cavity 10 completely covers the bottle blank neck 9c, the micropores 16 and the nozzle 20 spray gaseous hydrogen peroxide to sterilize the bottle blank inner surface 9b and the bottle blank neck 9 c; after the sterilization is finished, the gaseous hydrogen peroxide connecting pipe 8 is gradually lifted, the hydrogen peroxide sterilization closed cavity 10 and the gaseous hydrogen peroxide extension pipe 18 are driven to be completely separated from the bottle blank 9, and then the bottle blank 9 is conveyed to the heating section.
Preferably, the inlet and outlet of gaseous hydrogen peroxide sterilization section are provided with respectively and carry star gear I and transport star gear II, carry star gear I and carry star gear II all to be located on delivery track supporting member 13, carry star gear I and carry star gear II to be provided with bottle base tongs II and bottle base tongs IV that are used for snatching bottle base 9 respectively equidistantly, and bottle base tongs II and bottle base tongs IV correspond the setting with bottle base tongs III respectively, bottle base tongs II is used for snatching bottle base 9 that the ray irradiation disinfected of carrying on bottle base delivery track 1 and sends into gaseous hydrogen peroxide sterilization section, bottle base tongs IV is used for snatching bottle base 9 that the gaseous hydrogen peroxide disinfected and sends into next processing section.
Preferably, the heating section comprises an infrared heating device 11, an infrared heating lamp tube 14 is arranged in the infrared heating device 11, the bottle blanks 9 sterilized by gaseous hydrogen peroxide enter and exit the infrared heating device 11 through the bottle blank conveying track 1, the infrared heating device 11 heats the bottle blanks 9 through the infrared heating lamp tube 14, and the bottle blanks 9 heated by the infrared heating device 11 enter the next processing section through the bottle blank conveying track 1.
Preferably, the bottle blank conveying rails 1 positioned at the upstream of the ray irradiation pre-sterilization section and the heating section are respectively provided with a blank feeding rotary transmission disc, and the blank feeding rotary transmission discs adjust the rotation direction according to the processing load capacity so as to prevent the bottle blanks 9 from being blocked on the bottle blank conveying rails 1.
Compared with the prior art, the invention has the following beneficial effects:
the invention couples the ray irradiation with the gaseous hydrogen peroxide, is applied to the sterilization of the PET bottle preform, achieves the synergistic effect aiming at the outer surface of the bottle preform, the inner part of the bottle preform and the neck part of the bottle preform respectively, has high sterilization efficiency, and simultaneously performs sterilization aiming at the microorganisms which are difficult to kill at the thread part of the neck part of the bottle preform, ensures the sterile state of the bottle preform, can reduce the energy consumption during physical sterilization, and simultaneously reduces the consumption of the gaseous hydrogen peroxide and the risk of residual hydrogen peroxide.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic plan view of the apparatus of the present invention;
FIG. 3 is a front view of the apparatus of the present invention;
FIG. 4 is a schematic diagram of a device for a radiation irradiation sterilization section;
FIG. 5 is a schematic view showing the sterilization of the neck and interior of the preform by gaseous hydrogen peroxide.
The reference numbers in the figures are:
the bottle preform overturning and sealing device comprises a bottle preform conveying rail 1, a bottle preform conveying star wheel 2, a bottle preform overturning and supporting guide rail 3, a 4-ray generating device, a 5-isolation cover, a 6-bottle preform gripper I, a 7-gaseous hydrogen peroxide generating device, an 8-gaseous hydrogen peroxide connecting pipe, a 9-bottle preform, a 9 a-bottle preform outer surface, a 9 b-bottle preform inner surface, a 9 c-bottle preform neck, a 10-hydrogen peroxide sterilization closed cavity, an 11-infrared heating device, a 12-conveying rotary table I, a 13-conveying rail supporting component, a 14-infrared heating lamp tube, a 15-bottle preform overturning and supporting component, 16-micropores, a 17-gaseous hydrogen peroxide pipeline, an 18-gaseous hydrogen peroxide extension pipe, a 19-gaseous hydrogen peroxide guide pipe and a 20-nozzle.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the 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.
The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention.
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-5, a sterilization device for PET bottle preforms by ray irradiation coupled with gaseous hydrogen peroxide comprises a bottle preform conveying track 1, a ray irradiation sterilization section, a gaseous hydrogen peroxide sterilization section and a heating section, and is characterized in that bottle preforms 9 sequentially enter the ray irradiation sterilization section, the gaseous hydrogen peroxide sterilization section and the heating section through the bottle preform conveying track 1 to complete comprehensive sterilization,
the ray irradiation pre-sterilization section carries out external sterilization on the bottle blank 9;
the gaseous hydrogen peroxide sterilization section sterilizes the neck and the interior of the bottle blank 9;
the heating section is used for accelerating the removal of ozone generated by the ray irradiation and activating the gaseous hydrogen peroxide attached to the bottle blank 9 so as to further increase the sterilization effect and accelerate the volatilization of the gaseous hydrogen peroxide.
Preferably, the radiation pre-sterilization section comprises a radiation generating device 4, a bottle blank conveying star wheel 2, a bottle blank overturning support guide rail 3, a bottle blank gripper I6 and a bottle blank overturning support member 15, the bottle blank gripper I6 is fixedly connected with the bottle blank overturning support member 15, the bottle blank overturning support member 15 is in sliding connection with the bottle blank overturning support guide rail 3, and the bottle blank overturning support member 15 slides along the bottle blank overturning support guide rail 3 under the driving of the bottle blank conveying star wheel 2; starting from the grabbing of the neck of the bottle blank 9 by the bottle blank grabbing hand I6, the bottle blank overturning supporting member 15 drives the outer end of the bottle blank grabbing hand I6 to gradually rotate upwards under the action of the bottle blank overturning supporting guide rail 3 so as to drive the bottle blank 9 to gradually overturn from the vertical direction to the horizontal direction, the bottle blank 9 in the horizontal direction enters the ray generating device 4 to enable the outer surface 9a of the bottle blank to receive ray irradiation, the bottle blank 9 leaving the ray generating device 4 gradually overturns to the vertical direction under the action of the bottle blank overturning supporting member 15 and the bottle blank overturning supporting guide rail 3, and then the bottle blank is conveyed to the gaseous hydrogen peroxide sterilization section.
Preferably, an isolation cover 5 is arranged outside the ray generating device 4, and the isolation cover 5 is used for realizing isolation from the outside, so that the loss of ray irradiation energy and the radiation damage of ray irradiation to operators are avoided; the ray generating device is positioned at the upper position inside the shielding case 5, and when the bottle blank 9 enters the ray generating device 4, the ray generating device 4 is positioned right above the bottle blank 9.
Preferably, the radiation irradiation of the radiation generating device 4 includes any one of electron beam irradiation, ultraviolet irradiation, or pulsed strong light irradiation.
Preferably, a conveying rotary table I12 and a conveying rotary table II are respectively arranged at the inlet and the outlet of the ray irradiation pre-sterilization section, blank clamping grooves matched with the appearance of the bottle blanks 9 are formed in the side surfaces of the conveying rotary table I12 and the conveying rotary table II at equal intervals, the conveying rotary table I12 is used for conveying the bottle blanks 9 on the bottle blank conveying rail 1 into the ray irradiation pre-sterilization section, and the conveying rotary table II is used for conveying the bottle blanks 9 subjected to ray irradiation sterilization out of the ray irradiation pre-sterilization section.
Preferably, the gaseous hydrogen peroxide sterilization section comprises a connecting pipe lifting groove, a bottle blank gripper III, a gaseous hydrogen peroxide generation device 7, a gaseous hydrogen peroxide connecting pipe 8, a hydrogen peroxide sterilization closed cavity 10, a gaseous hydrogen peroxide pipeline 17, a gaseous hydrogen peroxide extension pipe 18 and a gaseous hydrogen peroxide guide pipe 19, wherein the gaseous hydrogen peroxide connecting pipe 8 slides in the connecting pipe lifting groove, the hydrogen peroxide sterilization closed cavity 10 is connected to the lower end of the gaseous hydrogen peroxide connecting pipe 8, a plurality of micropores 16 are uniformly formed in the inner wall of the hydrogen peroxide sterilization closed cavity 10, the micropore 16 at the top center position of the inner wall of the hydrogen peroxide sterilization closed cavity 10 is communicated with the gaseous hydrogen peroxide extension pipe 18, a nozzle 20 is formed at the lower end of the gaseous hydrogen peroxide extension pipe 18, and the gaseous hydrogen peroxide is conveyed to the hydrogen peroxide sterilization closed cavity 10 through the gaseous hydrogen peroxide pipeline 17 and the gaseous hydrogen peroxide guide pipe 19, 16 sprays to bottle base internal surface 9b and bottle base neck 9c through the micropore on the airtight chamber 10 inner wall of hydrogen peroxide sterilization and disinfect the time, spouts gaseous state hydrogen peroxide to bottle base internal surface 9b through nozzle 20, guarantees that the bottom of bottle base 9 fully contacts gaseous state hydrogen peroxide, guarantees the efficiency of disinfecting.
Preferably, the bottle blank grippers III rotate around the axis of the gaseous hydrogen peroxide generator 7 and are uniformly distributed, the bottle blank grippers III correspond to the gaseous hydrogen peroxide connecting pipes 8 one by one and rotate coaxially and synchronously, the gaseous hydrogen peroxide connecting pipes 8 are positioned right above the bottle blank grippers III, when the bottle blank grippers III grip the bottle blank 9, the lowest end of the gaseous hydrogen peroxide extension pipe 18 is positioned right above the opening of the bottle blank 9, the gaseous hydrogen peroxide connecting pipes 8 gradually descend along with the rotation of the bottle blank grippers III, the hydrogen peroxide sterilization closed cavity 10 gradually covers the neck 9c of the bottle blank, and the gaseous hydrogen peroxide extension pipe 18 gradually extends into the inner surface 9b of the bottle blank; when the hydrogen peroxide sterilization closed cavity 10 completely covers the bottle blank neck 9c, the micropores 16 and the nozzle 20 spray gaseous hydrogen peroxide to sterilize the bottle blank inner surface 9b and the bottle blank neck 9 c; after the sterilization is finished, the gaseous hydrogen peroxide connecting pipe 8 is gradually lifted, the hydrogen peroxide sterilization closed cavity 10 and the gaseous hydrogen peroxide extension pipe 18 are driven to be completely separated from the bottle blank 9, and then the bottle blank 9 is conveyed to the heating section.
Preferably, the inlet and outlet of gaseous hydrogen peroxide sterilization section are provided with respectively and carry star gear I and transport star gear II, carry star gear I and carry star gear II all to be located on delivery track supporting member 13, carry star gear I and carry star gear II to be provided with bottle base tongs II and bottle base tongs IV that are used for snatching bottle base 9 respectively equidistantly, and bottle base tongs II and bottle base tongs IV correspond the setting with bottle base tongs III respectively, bottle base tongs II is used for snatching bottle base 9 that the ray irradiation disinfected of carrying on bottle base delivery track 1 and sends into gaseous hydrogen peroxide sterilization section, bottle base tongs IV is used for snatching bottle base 9 that the gaseous hydrogen peroxide disinfected and sends into next processing section.
Preferably, the heating section comprises an infrared heating device 11, an infrared heating lamp tube 14 is arranged in the infrared heating device 11, the bottle blanks 9 sterilized by gaseous hydrogen peroxide enter and exit the infrared heating device 11 through the bottle blank conveying track 1, the infrared heating device 11 heats the bottle blanks 9 through the infrared heating lamp tube 14, and the bottle blanks 9 heated by the infrared heating device 11 enter the next processing section through the bottle blank conveying track 1.
Preferably, the bottle blank conveying rails 1 positioned at the upstream of the ray irradiation pre-sterilization section and the heating section are respectively provided with a blank feeding rotary transmission disc, and the blank feeding rotary transmission discs adjust the rotation direction according to the processing load capacity so as to prevent the bottle blanks 9 from being blocked on the bottle blank conveying rails 1.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it should 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 (8)
1. A sterilization device for PET bottle blanks by ray irradiation coupling gaseous hydrogen peroxide comprises a bottle blank conveying track (1), a ray irradiation sterilization section, a gaseous hydrogen peroxide sterilization section and a heating section, and is characterized in that bottle blanks (9) sequentially enter the ray irradiation sterilization section, the gaseous hydrogen peroxide sterilization section and the heating section through the bottle blank conveying track (1) to complete comprehensive sterilization,
the ray irradiation pre-sterilization section is used for carrying out external sterilization on the bottle blank (9);
the gaseous hydrogen peroxide sterilization section is used for sterilizing the neck and the interior of the bottle blank (9);
the heating section is used for accelerating the removal of ozone generated by ray irradiation and activating the gaseous hydrogen peroxide attached to the bottle blank (9) so as to further increase the sterilization effect and accelerate the volatilization of the gaseous hydrogen peroxide;
the ray irradiation pre-sterilization section comprises a ray generating device (4), a bottle blank conveying star wheel (2), a bottle blank overturning support guide rail (3), a bottle blank gripper I (6) and a bottle blank overturning support member (15), wherein the bottle blank gripper I (6) is fixedly connected with the bottle blank overturning support member (15), the bottle blank overturning support member (15) is in sliding connection with the bottle blank overturning support guide rail (3), and the bottle blank overturning support member (15) slides along the bottle blank overturning support guide rail (3) under the driving of the bottle blank conveying star wheel (2); starting from the grabbing of the neck of the bottle blank (9) by the bottle blank grabbing hand I (6), the bottle blank overturning supporting member (15) drives the outer end of the bottle blank grabbing hand I (6) to gradually rotate upwards under the action of the bottle blank overturning supporting guide rail (3) so as to drive the bottle blank (9) to gradually overturn from the vertical direction to the horizontal direction, the bottle blank (9) in the horizontal direction enters the ray generating device (4) to enable the outer surface (9a) of the bottle blank to receive ray irradiation, the bottle blank (9) leaving the ray generating device (4) gradually overturns to the vertical direction under the action of the bottle blank overturning supporting member (15) and the bottle blank overturning supporting guide rail (3), and then the bottle blank is conveyed to a gaseous hydrogen peroxide sterilization section;
an isolation cover (5) is arranged outside the ray generating device (4), and the isolation cover (5) is used for realizing isolation from the outside, so that the loss of ray irradiation energy and the radiation damage of ray irradiation to operators are avoided; the ray generating device is positioned at the upper position inside the shielding cover (5), and when the bottle blank (9) enters the ray generating device (4), the ray generating device (4) is positioned right above the bottle blank (9).
2. Sterilisation apparatus according to claim 1, characterised in that the radiation irradiation of the radiation generating means (4) comprises any one of electron beam irradiation, ultraviolet irradiation or pulsed intense light irradiation.
3. The sterilization device according to claim 1, wherein the inlet and outlet of the radiation pre-sterilization section are respectively provided with a transmission turntable I (12) and a transmission turntable II, the lateral surfaces of the transmission turntable I (12) and the transmission turntable II are provided with blank clamping grooves with equal intervals, the blank clamping grooves are matched with the shapes of the bottle blanks (9), the transmission turntable I (12) is used for feeding the bottle blanks (9) on the bottle blank conveying track (1) into the radiation pre-sterilization section, and the transmission turntable II is used for sending the bottle blanks (9) sterilized by radiation out of the radiation pre-sterilization section.
4. The sterilization device according to claim 1, wherein the gaseous hydrogen peroxide sterilization section comprises a connecting pipe lifting groove, a bottle blank gripper III, a gaseous hydrogen peroxide generation device (7), a gaseous hydrogen peroxide connecting pipe (8), a hydrogen peroxide sterilization closed cavity (10), a gaseous hydrogen peroxide pipeline (17), a gaseous hydrogen peroxide extension pipe (18) and a gaseous hydrogen peroxide guide pipe (19), the gaseous hydrogen peroxide connecting pipe (8) slides in the connecting pipe lifting groove, the hydrogen peroxide sterilization closed cavity (10) is connected to the lower end of the gaseous hydrogen peroxide connecting pipe (8), the inner wall of the hydrogen peroxide sterilization closed cavity (10) is uniformly provided with a plurality of micropores (16), the micropores (16) at the top center position of the inner wall of the hydrogen peroxide closed cavity (10) are communicated with the gaseous hydrogen peroxide extension pipe (18), the lower end of the gaseous hydrogen peroxide extension pipe (18) is provided with a nozzle (20), gaseous hydrogen peroxide carries to hydrogen peroxide sealed chamber (10) of disinfecting through gaseous hydrogen peroxide pipeline (17) and gaseous hydrogen peroxide pipe (19), when disinfecting to bottle base internal surface (9b) and bottle base neck (9c) micropore (16) spraying on sealed chamber (10) inner wall of disinfecting through hydrogen peroxide, spout gaseous hydrogen peroxide to bottle base internal surface (9b) through nozzle (20), guarantee that the bottom of bottle base (9) fully contacts gaseous hydrogen peroxide, guarantee the efficiency of disinfecting.
5. The sterilization device according to claim 4, wherein the bottle preform grippers III rotate around the axis of the gaseous hydrogen peroxide generation device (7) and are uniformly distributed, the bottle preform grippers III correspond to the gaseous hydrogen peroxide connecting pipes (8) one by one and rotate coaxially and synchronously, the gaseous hydrogen peroxide connecting pipes (8) are positioned right above the bottle preform grippers III, when the bottle preform grippers III grip the bottle preforms (9), the lowest ends of the gaseous hydrogen peroxide extension pipes (18) are positioned right above the openings of the bottle preforms (9), the gaseous hydrogen peroxide connecting pipes (8) gradually descend along with the rotation of the bottle preform grippers III, the hydrogen peroxide sterilization closed cavities (10) gradually cover the neck portions (9c) of the bottle preforms, and the gaseous hydrogen peroxide extension pipes (18) gradually penetrate into the inner surfaces (9b) of the bottle preforms; when the hydrogen peroxide sterilization closed cavity (10) completely covers the bottle blank neck (9c), the micropores (16) and the nozzle (20) spray gaseous hydrogen peroxide to sterilize the inner surface (9b) of the bottle blank and the bottle blank neck (9 c); after sterilization, the gaseous hydrogen peroxide connecting pipe (8) is gradually lifted, the hydrogen peroxide sterilization closed cavity (10) and the gaseous hydrogen peroxide extension pipe (18) are driven to be completely separated from the bottle blank (9), and then the bottle blank (9) is conveyed to the heating section.
6. The sterilization device according to claim 5, wherein a conveying star wheel I and a conveying star wheel II are respectively arranged at the inlet and the outlet of the gaseous hydrogen peroxide sterilization section, the conveying star wheel I and the conveying star wheel II are both positioned on the conveying track supporting member (13), a bottle blank gripper II and a bottle blank gripper IV for gripping bottle blanks (9) are respectively arranged at equal intervals on the conveying star wheel I and the conveying star wheel II, the bottle blank gripper II and the bottle blank gripper IV are respectively arranged corresponding to the bottle blank gripper III, the bottle blank gripper II is used for gripping bottle blanks (9) which are conveyed on the bottle blank conveying track (1) and sterilized by ray irradiation and conveying the bottle blanks into the gaseous hydrogen peroxide sterilization section, and the bottle blank gripper IV is used for gripping bottle blanks (9) which are sterilized by gaseous hydrogen peroxide and conveying the bottle blanks into the next processing section.
7. The sterilization apparatus according to claim 1, wherein the heating section comprises an infrared heating apparatus (11), the infrared heating apparatus (11) is provided with an infrared heating lamp (14), the preforms (9) sterilized by gaseous hydrogen peroxide enter and exit the infrared heating apparatus (11) through the preform conveying track (1), the infrared heating apparatus (11) heats the preforms (9) through the infrared heating lamp (14), and the preforms (9) heated by the infrared heating apparatus (11) enter the next processing section through the preform conveying track (1).
8. The sterilization apparatus according to claim 1, wherein the preform conveying rails (1) located upstream of the radiation pre-sterilization section and the heating section are each provided with a preform feeding carousel that adjusts a rotation direction according to a processing load amount to prevent the preforms (9) from being jammed on the preform conveying rails (1).
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| CN202110727246.9A CN113428824B (en) | 2021-06-29 | 2021-06-29 | Sterilizing device for PET bottle blank by ray irradiation coupling gaseous hydrogen peroxide |
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| CN202110727246.9A CN113428824B (en) | 2021-06-29 | 2021-06-29 | Sterilizing device for PET bottle blank by ray irradiation coupling gaseous hydrogen peroxide |
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