CN112190727B - Ultraviolet laser sterilization and disinfection system and method based on conveyor belt - Google Patents
Ultraviolet laser sterilization and disinfection system and method based on conveyor belt Download PDFInfo
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- CN112190727B CN112190727B CN202010967165.1A CN202010967165A CN112190727B CN 112190727 B CN112190727 B CN 112190727B CN 202010967165 A CN202010967165 A CN 202010967165A CN 112190727 B CN112190727 B CN 112190727B
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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
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
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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
- A61L2/26—Accessories or devices or components used for biocidal treatment
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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
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
Abstract
The invention belongs to the technical field of laser biology, and particularly discloses an ultraviolet laser sterilization and disinfection system and method based on a conveyor belt. Including conveyer belt device and ultraviolet laser disinfection apparatus that disinfects, conveyer belt device includes the conveyer belt that two intervals set up, ultraviolet laser disinfection apparatus that disinfects is including the ultraviolet laser disinfection module that disinfects who locates the conveyer belt top and locate the ultraviolet laser disinfection module that disinfects of two conveyer belt clearances below, ultraviolet laser disinfection module all includes ultraviolet laser, expand beam turn light path and beam shaper, ultraviolet laser is used for launching ultraviolet laser, expand beam turn light path and be used for expanding the facula of ultraviolet laser, the beam shaper is used for the linear ultraviolet laser beam of ultraviolet laser plastic for appointed angle after will expanding. The laser beam has small divergence angle and large optical power density, can indicate where to kill, automatically realize full-coverage quick and efficient killing of objects, and is efficient, safe and effective.
Description
Technical Field
The invention belongs to the technical field of laser biology, and particularly relates to an ultraviolet laser sterilization and disinfection system and method based on a conveyor belt.
Background
The novel coronavirus pneumonia (COVID-19) has the characteristics of strong infectious capacity, long latency period and the like, and particularly under the conditions of proper temperature and humidity, the survival time on the upper surface of an object can reach several days, so that the epidemic prevention difficulty is increased rapidly. At the present stage, a novel disinfection and killing technology aiming at bacteria and viruses on the surface of an object is needed to carry out scientific epidemic prevention and disease prevention, improve the intrinsic safety of the national public health and defend the health and safety of the national people.
Aiming at public occasions such as customhouse ports, frontier defense docks, logistics centers, fresh markets, large supermarkets and the like, viruses can be attached to the surfaces of objects such as packages, express delivery, fresh foods, commodities and the like to realize diffusion and transmission, and the health of people is threatened, the ultraviolet laser sterilization and disinfection method based on the conveyor belt is adopted to sterilize and disinfect the surfaces of the objects in the occasions, so that the virus transmission path can be effectively cut off, and the cross infection of personnel can be reduced.
In the field of sterilization and disinfection of the existing object surface, conventional modes such as chemical sterilization and ultraviolet lamp sterilization are mainly adopted, the chemical sterilization and disinfection modes mainly comprise alcohol sterilization and chlorine-containing sterilization and disinfection modes, and although the alcohol sterilization and disinfection can be used for quickly sterilizing and disinfecting a large area, the alcohol is easy to volatilize and has potential safety hazards in storage; the chlorine-containing disinfection mode has chemical residues, and has great influence on human health and environment. The ultraviolet lamp has a large divergence angle, and the energy distribution of light spots is uneven, so that the local killing effect is poor, and objects carrying bacterial viruses cannot be rapidly and effectively killed. In the prior art CN104368020A patent "ultraviolet laser sterilization system", an ultraviolet laser sterilization system is disclosed, in which a scanning module includes a plurality of mirrors for receiving the ultraviolet laser and a controller for controlling the rotation of each mirror to adjust the exit angle of the ultraviolet laser, so as to perform sterilization on the surface of an object. Ultraviolet laser only 1mm 2 ～4mm 2 The sterilization area and the peak power of 5kW are small, the sterilization time is long, the efficiency is low, only one surface of an object can be sterilized, full-coverage irradiation sterilization can not be realized on each surface of the object, and a plurality of defects exist in specific application and actual operation.
Based on the defects, the field needs to further improve the design of the existing conveyor belt ultraviolet laser sterilization and disinfection device, construct the ultraviolet laser sterilization and disinfection device with good light beam directivity and high power density, and solve the problems of the existing conveyor belt ultraviolet laser sterilization and disinfection device.
Disclosure of Invention
In response to the above-identified deficiencies or needs in the art, the present invention provides a conveyor belt-based ultraviolet laserThe sterilizing system and method combines the characteristics of ultraviolet laser sterilization and disinfection and the process characteristics of conveying belt conveying articles, correspondingly designs the ultraviolet laser sterilizing and disinfecting system based on the conveying belt, researches and designs the structures and specific arrangement modes of key components of the ultraviolet laser sterilizing and disinfecting system, such as an ultraviolet laser, a beam expanding and turning light path, a beam shaper and a conveying belt device, and correspondingly can effectively solve the problem that the laser irradiation area and the peak power in the existing ultraviolet laser sterilizing system are only 1mm 2 ～4mm 2 5kW, small sterilization area, long sterilization time and low efficiency. After the laser passes through the beam expanding and turning light path and the beam shaper, the light spot is expanded and shaped into a line stripe with the width of 8-16 mm, the peak power reaches MW level, and the complete killing of microorganisms such as bacteria, viruses and the like on the surface of an object can be realized at second level. By optimizing the quantity of the ultraviolet laser, the ultraviolet laser sources are respectively placed at two opposite angles and the bottom of the system, and the high-efficiency, thorough and full-coverage and dead-angle-free killing of each surface of an object can be realized.
In order to achieve the above object, according to one aspect of the present invention, there is provided a conveyor belt-based ultraviolet laser sterilization and disinfection system, comprising a conveyor belt device and an ultraviolet laser sterilization and disinfection device, wherein,
the conveyor belt device comprises two conveyor belts which are arranged at intervals and used for conveying the objects to be sterilized and disinfected;
the ultraviolet laser sterilization and disinfection device comprises ultraviolet laser sterilization and disinfection modules arranged above conveyor belts and ultraviolet laser sterilization and disinfection modules arranged below the gaps between the two conveyor belts, wherein each ultraviolet laser sterilization and disinfection module comprises an ultraviolet laser, a beam expanding and turning light path and a beam shaper, the ultraviolet laser is used for emitting ultraviolet laser, the beam expanding and turning light path is used for expanding the light spot of the ultraviolet laser into 6-12 mm, the center of the expanded ultraviolet laser is positioned at the center of the beam shaper, the incident angle is 45 degrees, the beam shaper is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam with a specified angle, the linear ultraviolet laser beam irradiates the surface of a sterilized article to be sterilized, and the sterilized article to be sterilized is sterilized and disinfected.
As a further preferred option, two uv laser sterilization modules are provided above the conveyor belt, and the two uv laser sterilization modules are arranged symmetrically with respect to the conveyor belt.
More preferably, the wave band of the ultraviolet laser emitted by the ultraviolet laser is 200 nm-400 nm, the pulse width is not more than 1ms, and the repetition frequency is not less than 100Hz.
As a further preferred embodiment, the beam-expanding and turning optical path includes, but is not limited to, a beam-expanding and collimating module, a reflecting mirror, a beam splitter, and a light guide arm, and turns the emitted laser light of the ultraviolet laser to a beam shaping system.
More preferably, the beam shaping system includes, but is not limited to, a one-dimensional scanning galvanometer and a powell prism, and shapes the expanded ultraviolet laser beam into a linear shape.
Preferably, the one-dimensional scanning galvanometer comprises a rotating motor and a scanning galvanometer connected with a power output shaft of the rotating motor, and the scanning galvanometer changes an included angle between the expanded ultraviolet laser and the scanning galvanometer under the driving action of the rotating motor so as to change the emitting direction of the expanded ultraviolet laser, so that the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
According to another aspect of the invention, there is also provided a sterilization method using the conveyor belt-based ultraviolet laser sterilization system, which is characterized by comprising the following steps:
1) Arranging a conveyor belt device and an ultraviolet laser sterilization and disinfection device, wherein the conveyor belt device comprises two conveyor belts which are arranged at intervals and used for transporting articles to be sterilized and disinfected;
2) Adjusting the position relation between the ultraviolet laser sterilization and disinfection device and the conveyor belts to ensure that linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged above the conveyor belts cover the outer surfaces of the objects to be sterilized and disinfected, which are not in contact with the conveyor belts, and simultaneously, when the objects to be sterilized and disinfected pass through the interval between the two conveyor belts, the linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged below the gap between the two conveyor belts cover the lower surfaces of the objects to be sterilized and disinfected;
3) Opening a conveyor belt device and an ultraviolet laser sterilization and disinfection device, wherein an ultraviolet laser is used for emitting ultraviolet laser, a beam expanding turning light path is used for expanding the light spot of the ultraviolet laser into 6-12 mm, the center of the expanded ultraviolet laser is positioned at the center of a beam shaper, the incident angle is 45 degrees, the beam shaper is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam with a specified angle, and the linear ultraviolet laser beam irradiates the surface of a disinfection object to be sterilized and disinfects the disinfection object to be sterilized.
As a further preferred option, two uv laser sterilization modules are provided above the conveyor belt, and the two uv laser sterilization modules are arranged symmetrically with respect to the conveyor belt.
More preferably, the wave band of the ultraviolet laser emitted by the ultraviolet laser is 200 nm-400 nm, the pulse width is not more than 1ms, and the repetition frequency is not less than 100Hz.
More preferably, the specific method of shaping the expanded ultraviolet laser into a linear ultraviolet laser beam at a predetermined angle is as follows: the power output shaft of the rotating motor is connected with the scanning galvanometer, and the scanning galvanometer changes the included angle between the expanded ultraviolet laser and the scanning galvanometer under the driving action of the rotating motor, so that the emitting direction of the expanded ultraviolet laser is changed, and in this way, the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. the system improves the safety of ultraviolet laser sterilization and disinfection, the laser irradiation area is positioned in the closed space, and no ultraviolet laser irradiates the human body, thereby avoiding the pathological changes of skin aging, canceration and the like caused by long-term exposure under ultraviolet light; and the ultraviolet laser sterilization and disinfection mode can not generate harmful residues on the surface of the object.
2. After the laser passes through the beam expanding turning light path and the beam shaper, the light spot is expanded and shaped into a line stripe with the width of 8 mm-16 mm, the peak power reaches MW level, and the complete killing of microorganisms such as bacteria, viruses and the like on the surface of an object can be realized at second level. By optimizing the quantity of the ultraviolet laser, the ultraviolet laser sources are respectively arranged at two opposite angles and the bottom of the system, so that the high-efficiency thorough full-coverage and dead-angle-free killing of each surface of an object can be realized.
3. The invention uses ultraviolet laser, whose high energy laser photon is absorbed by deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of bacteria and virus to cause irreversible structural damage of DNA and RNA, so that the bacteria and virus can not process protein formation, and the bacteria and virus can die immediately or lose reproduction ability.
4. The ultraviolet laser is shaped into a point-scanning linear beam by utilizing the collimation property and high power density of the ultraviolet laser and adopting the beam expanding turning light path and the beam shaper, so that the second-level rapid and efficient sterilization and killing of microorganisms such as bacteria, viruses and the like can be realized.
5. According to the invention, the object is placed on the conveyor belt, passes through the laser beam at a constant speed through the conveyor belt, and the three ultraviolet laser sources are arranged at two opposite angles and the bottom of the ultraviolet laser sterilization and disinfection device, so that the full-coverage contact disinfection and killing of the object can be automatically realized.
Drawings
FIG. 1 is a schematic structural diagram of a conveyor belt-based ultraviolet laser sterilization and disinfection system according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a conveyor belt-based ultraviolet laser sterilization and disinfection system according to another embodiment of the present invention;
fig. 3 is a schematic diagram of an expanded beam bending optical path according to an embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-ultraviolet laser sterilization and disinfection device, 2-conveyor device, 3-object to be sterilized and disinfected, 4-linear ultraviolet laser beam, 11-ultraviolet laser, 12-beam expanding turning light path, 13-beam shaper, 131-scanning galvanometer and 132-rotating motor
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, 2, and 3, in the ultraviolet laser sterilization and disinfection system based on the conveyor belt according to the embodiment of the present invention, an object 3 to be sterilized is conveyed to an ultraviolet laser irradiation region through the conveyor belt, ultraviolet laser passes through a beam expanding and turning optical path to form a line light curtain, an omni-directional scanning region is constructed through three line light curtains, the ultraviolet laser is absorbed by microorganisms such as bacteria and viruses, and genetic materials (DNA and RNA) are irreversibly broken, so that effective and thorough microbial sterilization and disinfection are achieved. The ultraviolet band laser has a great killing effect on microorganisms such as bacteria, viruses and the like, and the sterilization principle is that high-energy laser photons are absorbed by deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of the bacteria and the viruses due to the chemical effect, so that the DNA and the RNA are structurally damaged, the bacteria and the viruses cannot form protein, and the bacteria and the viruses die immediately or lose the reproductive capacity.
The system comprises a conveyor belt device 2 and an ultraviolet laser sterilization and disinfection device 2, wherein the conveyor belt device 2 comprises two conveyor belts which are arranged at intervals and used for transporting the objects to be sterilized and disinfected; the ultraviolet laser sterilization and disinfection device 1 comprises ultraviolet laser sterilization and disinfection modules arranged above conveyor belts and ultraviolet laser sterilization and disinfection modules arranged below the gaps between the two conveyor belts, each ultraviolet laser sterilization and disinfection module comprises an ultraviolet laser 11, a beam expanding and turning light path 12 and a light beam shaper 13, the ultraviolet laser 11 is used for emitting ultraviolet laser, the beam expanding and turning light path 12 is used for expanding the light spot of the ultraviolet laser into 6-12 mm, the center of the expanded ultraviolet laser is positioned at the center of the light beam shaper 13, the incident angle is 45 degrees, the light beam shaper 13 is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam 4 with an appointed angle, and the linear ultraviolet laser beam 4 irradiates the surface of a to-be-sterilized and disinfected object 3 and performs sterilization and disinfection on the to-be-sterilized and disinfected object 3.
The ultraviolet laser sterilization and disinfection modules are arranged above the conveyor belt, and the two ultraviolet laser sterilization and disinfection modules are symmetrically arranged on the conveyor belt.
The wave band of ultraviolet laser emitted by the ultraviolet laser 11 is 200 nm-400 nm, the pulse width is not more than 1ms, and the repetition frequency is not less than 100Hz.
The beam expanding and turning light path comprises but is not limited to a beam expanding and collimating module, a reflector, a spectroscope and a light guide arm, and turns the emergent laser of the ultraviolet laser to a beam shaping system. The beam expanding and collimating module comprises a beam expanding lens and a collimating lens.
The beam shaping system comprises but is not limited to a one-dimensional scanning galvanometer and a Powell prism, and shapes the expanded ultraviolet laser beam into a linear shape. As shown in fig. 3, the one-dimensional scanning galvanometer includes a rotating motor 132 and a scanning galvanometer 131 connected to a power output shaft of the rotating motor 132, and the scanning galvanometer 131 changes an included angle between the expanded ultraviolet laser and the scanning galvanometer 131 under a driving action of the rotating motor 132, so as to change an emitting direction of the expanded ultraviolet laser, and in this way, the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
The ultraviolet laser sterilization and disinfection device of the system has the following working process: opening an ultraviolet laser to output ultraviolet laser, outputting line stripe light curtains at two opposite corners and the bottom, placing an object to be killed on a conveyor belt to pass through a laser irradiation area at a constant speed, so that the laser is fully contacted with the surface of the object, and the rapid, efficient and comprehensive killing of bacteria and viruses is realized. The method comprises the following specific steps:
1) Arranging a conveyor belt device 2 and an ultraviolet laser sterilization and disinfection device 1, wherein the conveyor belt device 2 comprises two conveyor belts which are arranged at intervals and used for transporting articles to be sterilized and disinfected;
2) Adjusting the position relation of the ultraviolet laser sterilization and disinfection device 1 and the conveyor belts, so that the linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged above the conveyor belts cover the outer surfaces of the objects to be sterilized and disinfected, which are not in contact with the conveyor belts, and meanwhile, when the objects to be sterilized and disinfected pass through the interval between the two conveyor belts, the linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged below the gap between the two conveyor belts cover the lower surfaces of the objects to be sterilized and disinfected;
3) The conveyor belt device 2 and the ultraviolet laser sterilization and disinfection device 1 are started, wherein the ultraviolet laser 11 is used for emitting ultraviolet laser, the wave band of the ultraviolet laser emitted by the ultraviolet laser 11 is 200 nm-400 nm, the pulse width is not more than 1ms, and the repetition frequency is not less than 100Hz. The beam expanding turning light path 12 is used for expanding the light spot of the ultraviolet laser to 6 mm-12 mm, the center of the expanded ultraviolet laser is positioned at the center of the beam shaper 13, the incident angle is 45 degrees, the beam shaper 13 is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam with a specified angle, and the linear ultraviolet laser beam irradiates the surface of the object to be sterilized and disinfected and carries out sterilization and disinfection on the object to be sterilized and disinfected.
The specific method for shaping the expanded ultraviolet laser into the linear ultraviolet laser beam with the specified angle comprises the following steps: the power output shaft of the rotating motor is connected with the scanning galvanometer, and the scanning galvanometer changes the included angle between the expanded ultraviolet laser and the scanning galvanometer under the driving action of the rotating motor, so that the emitting direction of the expanded ultraviolet laser is changed, and in such a way, the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
The system mainly comprises an ultraviolet laser, a beam expanding and turning light path, a beam shaper and a conveyor belt; and the light beam of the ultraviolet laser passes through the beam expanding and turning light path and the beam shaper to form a linear laser beam, and the laser is contacted with the surface of an object to realize sterilization and disinfection. The invention utilizes the characteristics of high peak power, high efficiency, high speed and the like of the ultraviolet laser sterilization and disinfection technology to solve the safety problem of harmful residues in the existing chemical mode and the problem of long sterilization and disinfection time and low efficiency of the ultraviolet lamp, realizes the quick and high-efficiency sterilization and disinfection of the surfaces of objects such as food, surgical instruments, luggage, goods, packages, mails and the like, and can be widely applied to places such as seafood markets, logistics centers, frontier port, hospitals, security inspection ports and the like.
The system solves the problems of chemical residues generated by the traditional chemical disinfection, the problems of large disinfection divergence angle of the outer lamp, long disinfection time (minute level), easy generation of ozone and the like, and the problems of uneven irradiation area and incomplete disinfection effect of the manual scanning mechanism. Therefore, the invention has small divergence angle (mrad) of laser beam, large optical power density, can realize which is killed, is efficient, safe and effective, is non-contact light sterilization, does not have harmful residues, is safe and reliable, is conveyed to irradiate in multiple directions, and can automatically realize full-coverage sterilization on objects.
Example 1
The scheme of embodiment 1 of the invention is shown in fig. 2, and the ultraviolet laser sterilization and disinfection method based on the conveyor belt comprises the following steps: the device comprises an ultraviolet laser 11, a beam expanding and turning light path 12, a beam shaper 13, a sterilized object 3 to be sterilized and a conveyor belt device 2. Ultraviolet laser emitted by the ultraviolet laser 11 passes through the beam expanding and turning light path 12 and then enters the beam shaper 13, the spot diameter of the ultraviolet laser entering the beam shaper 13 is 6-12 mm, and the incident angle is 45 degrees; after the ultraviolet laser is incident to the beam shaper 13, a linear ultraviolet laser beam is formed in a point scanning mode through the one-dimensional scanning galvanometer and is irradiated on the surface of the sterilized object 3 to be sterilized. The ultraviolet laser sterilization and disinfection devices 1 are respectively arranged at two opposite angles and the bottom of the conveyor belt device 2, so that the comprehensive sterilization and disinfection of all the surfaces of the object 3 to be sterilized can be realized, and the bacteria and viruses on the surface of the object 3 to be sterilized can be quickly, efficiently and safely sterilized by passing the object 3 to be sterilized through the linear ultraviolet laser beams 4 at an even speed on the conveyor belt device. The system also comprises a shell for integrating the ultraviolet laser sterilization and disinfection device 1, the shell is of a hollow structure, the hollow structure is arranged along the moving direction of the conveyor belt, and protective curtains are arranged at the inlet and the outlet of the conveyor belt on the shell, so that the ultraviolet laser can not irradiate the human body, and the skin aging, canceration and other pathological changes caused by long-term exposure to ultraviolet light are avoided.
In this embodiment, the ultraviolet laser 1 has an ultraviolet laser band of 250nm to 360nm, a pulse width of not more than 1ms, and a repetition frequency of not less than 100Hz. The high-energy laser photons of the ultraviolet laser are absorbed by deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of bacteria and viruses to cause irreversible structural damage to the DNA and the RNA, so that the bacteria and the viruses cannot form protein, and the bacteria and the viruses immediately die or lose the reproductive capacity.
In this embodiment, after the ultraviolet laser emitted from the ultraviolet laser passes through the beam expander, the diameter of the light spot is expanded to 6 mm-12 mm, the expanded ultraviolet laser is guided into the beam shaper 13 through the turning light path, the center position of the ultraviolet laser beam is consistent with the center position of the one-dimensional scanning galvanometer in the beam shaper 13, the incident angle of the ultraviolet laser beam is 45 degrees, the one-dimensional scanning galvanometer rotates at a high speed in a single-axis direction through the driving device, the included angle between the incident ultraviolet laser and the one-dimensional scanning galvanometer is changed, the direction of the emitted ultraviolet laser is changed, a line is formed in a point scanning mode, and in this way, the ultraviolet laser is shaped into a linear laser beam.
In this embodiment, the ultraviolet laser 11, the beam expanding turning light path 12 and the beam shaper 13 are respectively installed at two opposite corners and the bottom of the ultraviolet laser sterilization and disinfection device, wherein the linear laser beams at the two opposite corners irradiate the upper surface, the front and back surfaces and the two side surfaces of the object, and the linear laser beams at the bottom irradiate the lower surface of the object, so that overall irradiation and disinfection of all the surfaces of the object are realized, and no dead angle in sterilization and disinfection is effectively achieved. The objects to be killed pass through the linear laser beams at a uniform speed on the conveyor belt, so that automatic killing is realized, manual operation procedures are reduced, and the safety of the device is improved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The ultraviolet laser sterilization and disinfection system based on the conveyor belt is characterized by comprising a conveyor belt device (2) and an ultraviolet laser sterilization and disinfection device (1), wherein,
the conveyor belt device (2) comprises two conveyor belts which are arranged at intervals and used for conveying the objects to be sterilized and disinfected;
the ultraviolet laser sterilization and disinfection device (1) comprises ultraviolet laser sterilization and disinfection modules arranged above the conveyor belts and ultraviolet laser sterilization and disinfection modules arranged below a gap between the two conveyor belts, each ultraviolet laser sterilization and disinfection module comprises an ultraviolet laser (11), a beam expanding turning optical path (12) and a beam shaper (13), the ultraviolet laser (11) is used for emitting ultraviolet laser, the beam expanding turning optical path (12) is used for expanding the light spot of the ultraviolet laser into 6-12 mm, the peak power of the expanded ultraviolet laser reaches MW level, complete killing of bacterial viruses on the surface of an object can be realized in second level, the center of the expanded ultraviolet laser is positioned at the center of the beam shaper (13), the incidence angle is 45 degrees, the beam shaper (13) is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam with a specified angle, the linear ultraviolet laser beam irradiates the surface of an object to be sterilized and disinfected, and disinfected the object to be sterilized;
two ultraviolet laser sterilization modules are arranged above the conveyor belt, and the two ultraviolet laser sterilization modules are symmetrically arranged around the conveyor belt;
the linear ultraviolet laser beam of the ultraviolet laser sterilization and disinfection module outgoing above the conveyor belt covers the outer surface of the object to be sterilized and disinfected which is not contacted with the conveyor belt, and simultaneously, when the object to be sterilized and disinfected passes through the interval between the two conveyor belts, the linear ultraviolet laser beam of the ultraviolet laser sterilization and disinfection module outgoing below the clearance between the conveyor belts covers the lower surface of the object to be sterilized and disinfected.
2. A conveyor belt-based uv laser sterilization and disinfection system as defined in claim 1 wherein said uv laser (11) emits uv laser light having a wavelength range of 200nm to 400nm, a pulse width of not more than 1ms, and a repetition rate of not less than 100Hz.
3. A conveyor-based uv laser disinfection system as claimed in claim 1 wherein said beam-expanding bend optical path includes but is not limited to a beam-expanding collimating module, a mirror, a beam splitter, a light guide arm, and bends the exiting laser light of said uv laser to a beam shaper (13).
4. A conveyor-based uv laser disinfection system as claimed in claim 1 wherein said beam shaper (13) comprises a one-dimensional scanning galvanometer to shape the expanded uv laser beam into a line.
5. A conveyor belt-based ultraviolet laser sterilization and disinfection system as recited in claim 4, wherein said one-dimensional scanning galvanometer comprises a rotating motor and a scanning galvanometer connected with a power output shaft of said rotating motor, said scanning galvanometer changes an included angle between the expanded ultraviolet laser and the scanning galvanometer under a driving action of the rotating motor, so as to change an emitting direction of the expanded ultraviolet laser, in this way, the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
6. A method of sterilization using the conveyor belt-based uv laser sterilization system of any of claims 1-5, comprising the steps of:
1) Arranging a conveyor belt device (2) and an ultraviolet laser sterilization and disinfection device (1), wherein the conveyor belt device (2) comprises two conveyor belts which are arranged at intervals and used for transporting articles to be sterilized and disinfected;
2) Adjusting the position relation between the ultraviolet laser sterilization and disinfection device (1) and the conveyor belts, so that the linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged above the conveyor belts cover the outer surfaces of the objects to be sterilized and disinfected, which are not in contact with the conveyor belts, and meanwhile, when the objects to be sterilized and disinfected pass through the interval between the two conveyor belts, the linear ultraviolet laser beams emitted by the ultraviolet laser sterilization and disinfection modules arranged below the gap between the two conveyor belts cover the lower surfaces of the objects to be sterilized and disinfected;
3) The method comprises the following steps of starting a conveyor belt device (2) and an ultraviolet laser sterilization and disinfection device (1), wherein an ultraviolet laser (11) is used for emitting ultraviolet laser, a beam expanding turning light path (12) is used for expanding light spots of the ultraviolet laser into 6-12 mm, the center of the expanded ultraviolet laser is located at the center of a beam shaper (13), the incident angle is 45 degrees, the beam shaper (13) is used for shaping the expanded ultraviolet laser into a linear ultraviolet laser beam with an appointed angle, the linear ultraviolet laser beam irradiates the surface of an object to be sterilized and disinfected, and the object to be sterilized is sterilized and disinfected.
7. The method as claimed in claim 6, wherein two UV laser sterilization modules are provided above the conveyor belt, and the two UV laser sterilization modules are symmetrically arranged about the conveyor belt.
8. A method according to claim 6, characterized in that the UV laser (11) emits UV laser light in a wavelength range of 200nm to 400nm, with a pulse width of not more than 1ms and a repetition rate of not less than 100Hz.
9. The method of claim 6, wherein the shaping of the expanded UV laser into a linear UV laser beam at a predetermined angle comprises: the power output shaft of the rotating motor is connected with the scanning galvanometer, and the scanning galvanometer changes the included angle between the expanded ultraviolet laser and the scanning galvanometer under the driving action of the rotating motor, so that the emitting direction of the expanded ultraviolet laser is changed, and in this way, the expanded ultraviolet laser is shaped into a linear ultraviolet laser beam with a specified angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967165.1A CN112190727B (en) | 2020-09-15 | 2020-09-15 | Ultraviolet laser sterilization and disinfection system and method based on conveyor belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010967165.1A CN112190727B (en) | 2020-09-15 | 2020-09-15 | Ultraviolet laser sterilization and disinfection system and method based on conveyor belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112190727A CN112190727A (en) | 2021-01-08 |
| CN112190727B true CN112190727B (en) | 2022-11-18 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113003166A (en) * | 2021-01-20 | 2021-06-22 | 北京岩成科技有限公司 | Ultraviolet device with microorganism detection function |
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| CN113117106A (en) * | 2021-04-09 | 2021-07-16 | 厦门大学 | Cold chain cargo omnibearing disinfection device based on deep ultraviolet |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752386A1 (en) * | 1996-08-14 | 1998-02-20 | Commissariat Energie Atomique | METHOD FOR CLEANING OR DECONTAMINATING AN OBJECT BY MEANS OF A ULTRAVIOLET LASER BEAM AND DEVICE FOR IMPLEMENTING IT |
| CN102218415A (en) * | 2011-03-10 | 2011-10-19 | 大连理工大学 | Method and device for cleaning tokamak first mirror by vacuum ultraviolet laser |
| CN203087354U (en) * | 2013-02-05 | 2013-07-31 | 何颖霖 | Laser sterilization and disinfection device |
| CN104511032A (en) * | 2014-12-29 | 2015-04-15 | 中国工程物理研究院流体物理研究所 | Rotating mirror scanning dual waveband semiconductor laser sterilization system for medical device |
| CN205198518U (en) * | 2015-09-15 | 2016-05-04 | 王世庆 | Dry -cleaning sterilizer |
| CN107625976A (en) * | 2017-10-08 | 2018-01-26 | 苏州中蟹网电子商务有限公司 | A kind of lens focus formula medical sterilization system |
| CN111249495A (en) * | 2020-04-03 | 2020-06-09 | 光线魔人(深圳)科技有限公司 | Ultraviolet pulse type laser device for killing viruses and bacteria |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6492645B1 (en) * | 1999-06-30 | 2002-12-10 | Surebeam Corporation | System for, and method of, irradiating articles to sterilize the articles |
| CN102389583B (en) * | 2011-06-24 | 2013-11-06 | 深圳大学 | Sterilization system |
| CN103235489B (en) * | 2013-05-15 | 2015-01-07 | 中国科学院光电技术研究所 | Variable-cycle multi-beam interference photoetching method |
| TWI559942B (en) * | 2013-08-15 | 2016-12-01 | Univ Nat Cheng Kung | Ultraviolet laser sterilization system |
| WO2015116833A1 (en) * | 2014-01-29 | 2015-08-06 | P Tech, Llc | Systems and methods for disinfection |
| CN106794357B (en) * | 2014-09-19 | 2019-02-19 | 夏普株式会社 | Sterilizing unit |
| CN204618920U (en) * | 2015-03-27 | 2015-09-09 | 四川农业大学 | Multiaspect ultra-vioket radiation sterilization transporter |
| CN106199951B (en) * | 2016-08-12 | 2019-05-24 | 武汉光谷航天三江激光产业技术研究院有限公司 | A kind of compact single shaft scanning means of laser cleaning machine |
| CN107321721A (en) * | 2017-08-28 | 2017-11-07 | 深圳光韵达光电科技股份有限公司 | A kind of SMT steel meshes cleaning device and cleaning method |
| CN108816963B (en) * | 2018-08-01 | 2024-02-06 | 中山普宏光电科技有限公司 | Ultraviolet light and ultraviolet laser double-light-source cleaning equipment |
-
2020
- 2020-09-15 CN CN202010967165.1A patent/CN112190727B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752386A1 (en) * | 1996-08-14 | 1998-02-20 | Commissariat Energie Atomique | METHOD FOR CLEANING OR DECONTAMINATING AN OBJECT BY MEANS OF A ULTRAVIOLET LASER BEAM AND DEVICE FOR IMPLEMENTING IT |
| CN102218415A (en) * | 2011-03-10 | 2011-10-19 | 大连理工大学 | Method and device for cleaning tokamak first mirror by vacuum ultraviolet laser |
| CN203087354U (en) * | 2013-02-05 | 2013-07-31 | 何颖霖 | Laser sterilization and disinfection device |
| CN104511032A (en) * | 2014-12-29 | 2015-04-15 | 中国工程物理研究院流体物理研究所 | Rotating mirror scanning dual waveband semiconductor laser sterilization system for medical device |
| CN205198518U (en) * | 2015-09-15 | 2016-05-04 | 王世庆 | Dry -cleaning sterilizer |
| CN107625976A (en) * | 2017-10-08 | 2018-01-26 | 苏州中蟹网电子商务有限公司 | A kind of lens focus formula medical sterilization system |
| CN111249495A (en) * | 2020-04-03 | 2020-06-09 | 光线魔人(深圳)科技有限公司 | Ultraviolet pulse type laser device for killing viruses and bacteria |
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