CN219941296U - Sterilizing device and system - Google Patents

Abstract

The utility model relates to a disinfection and sterilization device, comprising: the mounting seat is provided with a mounting groove; the ultraviolet lamp is arranged in the mounting groove; the flexible filter film is covered on the ultraviolet lamp; the flexible filter film comprises an absorption material and a film forming material, wherein the absorption material comprises a guanidine salt material or a base material, and the film forming material is perfluorinated plastics; the condensing plate is arranged in the mounting groove and is positioned between the ultraviolet lamp and the mounting seat; the ultrasonic transducer is arranged on the mounting seat. Through set up flexible filter membrane on ultraviolet lamp, can make ultraviolet lamp pass through after the filter effect of flexible filter membrane and obtain the ultraviolet ray that the wavelength is 222nm, still through set up ultrasonic transducer on the mount pad, utilize the ultrasonic wave to have very strong diffraction effect in order to assist disinfection. The disinfection and sterilization device adopts ultraviolet rays and ultrasonic waves to carry out composite disinfection and sterilization on the first space where people exist, has high safety and no harm to human bodies, and can finish disinfection and sterilization in a short time.

Description

Sterilizing device and system

Technical Field

The utility model relates to the technical field of sterilization, in particular to a sterilization device and a sterilization system.

Background

Chemical agent sterilization (e.g., 84 disinfectant), plasma sterilization, ultraviolet sterilization, etc. exist on the market. Other sterilization modes except ultrasonic sterilization can cause Wen Hai to different degrees to human bodies, and the ultrasonic sterilization method is also not suitable for scenes where people exist, but the ultrasonic sterilization efficiency is low.

At present, related experiments have proved that under laboratory conditions, ultraviolet rays with the wavelength of 220nm to 230nm can effectively kill bacteria and viruses. The light can not damage the human body after long-term irradiation. However, bacteria and viruses in the experiment are generally exposed, so that the bacteria and viruses are easily killed by ultraviolet rays with small penetrability even though the volume of the bacteria and viruses is small. In actual transmission, bacteria and viruses often adhere to substances such as aerosols and dust particles, and in such a state, the bacteria and viruses in actual life are difficult to kill.

Light sources with a number of UV devices emit near 222nm, but are mainly used for sterilization, mainly excimer lasers and krypton chloride excimer lamps. Excimer laser devices are expensive and are rarely used for the disinfection of bacteria and viruses in real life. However, krypton chloride excimer lamps emit ultraviolet light in the vicinity of 222nm, which emits ultraviolet light having a wavelength ranging from 230nm to 300nm harmful to the human body, and thus it is necessary to filter ultraviolet light having a wavelength harmful to the human body. Therefore, how to realize efficient disinfection and sterilization of rooms such as classrooms and offices under the condition of people is a technical problem to be solved at present.

Prior art 1: the utility model patent application with publication number CN 111256249A;

prior art 2: the utility model patent application with publication number CN 114452431A.

Disclosure of Invention

The utility model provides a disinfection and sterilization device and a disinfection and sterilization system, which aim to solve the technical problem of how to disinfect and sterilize rooms such as classrooms, offices and the like efficiently under the condition of people.

The utility model discloses a disinfection and sterilization device which comprises a mounting seat, an ultraviolet lamp, a flexible filter film, a condensing plate and an ultrasonic transducer, wherein the mounting seat is provided with a mounting groove, the ultraviolet lamp is arranged in the mounting groove, the flexible filter film is covered by the ultraviolet lamp, the condensing plate is arranged in the mounting groove and is positioned between the ultraviolet lamp and the mounting seat, and the ultrasonic transducer is arranged on the mounting seat. The flexible filter film is used for absorbing harmful ultraviolet light, has strong absorption near 257nm and has high transmittance near 222 nm. The flexible filter film comprises an absorption material and a film forming material, wherein the absorption material comprises a guanidine salt material or a base material, and the film forming material is perfluorinated plastics.

Further, the ultrasonic transducers are arranged on two sides of the ultraviolet lamp along the length direction of the mounting seat.

Further, the disinfection and sterilization device further comprises a displacement assembly, one end of the displacement assembly is connected with one side face of the mounting seat, and the displacement assembly can drive the mounting seat to move.

Further, the displacement assembly comprises a first fixed plate, a driving motor, a screw rod and a displacement block, wherein the first fixed plate is arranged on a first plane, the driving motor is arranged on the first fixed plate, the screw rod is arranged on an output shaft of the driving motor, the displacement block is arranged on the mounting seat, and a threaded hole matched with the screw rod is formed in the displacement block.

Further, the displacement assembly further comprises a second fixing plate, and the second fixing plate is arranged at one end of the screw rod, which is far away from the driving motor.

Further, the disinfection and sterilization device further comprises a moving assembly, one end of the moving assembly is connected with at least one ultrasonic transducer, and the moving assembly can drive the ultrasonic transducer connected with the moving assembly to move.

Further, the moving assembly comprises an electric push rod, and the electric push rod comprises a telescopic end which is connected with at least one ultrasonic transducer.

The utility model also discloses a system with the disinfection and sterilization device, which comprises a first space and the disinfection and sterilization device according to any one of the above, wherein the first space comprises a first plane and a second plane, and the disinfection and sterilization device is arranged on the first plane and/or the second plane.

Further, the plurality of sterilization devices are uniformly distributed at intervals along the first direction on the first plane.

Further, when the first plane is parallel to the second plane, the plurality of sterilization devices arranged on the first plane are arranged in a crossing manner with the plurality of sterilization devices arranged on the second plane.

The disinfection and sterilization device and system provided by the utility model can realize the following technical effects:

1. according to the disinfection and sterilization device, the flexible filter film is arranged on the ultraviolet lamp, so that the ultraviolet lamp can obtain ultraviolet rays with the wavelength of 222nm after the ultraviolet lamp is subjected to the filter action of the flexible filter film, and the ultraviolet disinfection and sterilization device can be used for disinfecting the environment in the first space under the condition that people exist in the first space such as classrooms, offices, bedrooms and workshops.

2. The disinfection and sterilization device of the utility model also utilizes the strong diffraction effect of ultrasonic waves to assist disinfection and sterilization by arranging the ultrasonic transducer on the mounting seat, and utilizes the ultrasonic waves emitted by the ultrasonic transducer to disinfect the first space while the ultraviolet lamp disinfects the first space. The utility model adopts ultraviolet rays and ultrasonic waves to carry out composite sterilization and disinfection on the first space where people exist, has high safety and no harm to human bodies, and can finish the disinfection and disinfection work in a short time.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which:

FIG. 1 is a schematic view of an embodiment of an disinfection apparatus according to the present utility model;

FIG. 2 is a schematic diagram II of an embodiment of an disinfection apparatus according to the present utility model;

FIG. 3 is an exploded view of one embodiment of an disinfection apparatus of the present utility model;

fig. 4 is an enlarged view of a portion a of fig. 3;

FIG. 5 is a schematic diagram III of an embodiment of an disinfection apparatus of the present utility model;

FIG. 6 is a schematic view of an embodiment of an apparatus for sterilization according to the present utility model;

FIG. 7 is a schematic exploded view of an embodiment of an disinfection apparatus of the present utility model;

FIG. 8 is a schematic view of one embodiment of a mobile assembly of an disinfection and sterilization device of the present utility model coupled to an ultrasonic transducer;

FIG. 9 is a schematic diagram II of an embodiment of an disinfection apparatus according to the present utility model;

FIG. 10 is a schematic diagram of a sterilization apparatus according to an embodiment of the present utility model;

FIG. 11 is a schematic diagram of an embodiment of an disinfection apparatus according to the present utility model;

FIG. 12 is a schematic illustration of one embodiment of a system with an disinfection apparatus of the present utility model;

FIG. 13 is a schematic diagram II of an embodiment of a system with an disinfection apparatus of the present utility model;

FIG. 14 is a graph of the light component analysis of a krypton chloride excimer light source as referred to in the embodiments;

FIG. 15 is a graph showing transmittance requirement curves of the optical filter according to the embodiment;

FIG. 16 is an ultraviolet light absorption curve of the flexible filter film obtained in example 1 of the flexible filter film;

FIG. 17 is a graph of the transmittance of the flexible film obtained in example 1 of the flexible filter film;

FIG. 18 is an ultraviolet light absorption curve of the flexible filter film obtained in example 2 of the flexible filter film;

fig. 19 is an ultraviolet light absorption curve of the flexible filter film obtained in example 3 of the flexible filter film.

Reference numerals:

1. a mounting base; 11. a mounting groove; 12. a clamping groove; 13. a first mounting plate; 14. a second mounting plate; 15. a power supply base; 16. a mounting cavity; 17. a waist-shaped hole; 2. an ultraviolet lamp; 3. a flexible filter film; 4. a condensing plate; 41. clamping the edge; 5. an ultrasonic transducer; 51. a fixing seat; 52. a plug hole; 6. a displacement assembly; 61. a first fixing plate; 62. a second fixing plate; 63. a driving motor; 64. a screw rod; 65. a displacement block; 66. a threaded hole; 67. a rotation hole; 7. a moving assembly; 71. an electric push rod; 72. a telescoping end; 8. a first space; 81. a first plane; 82. a second plane.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, and "plurality" means two or more.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in fig. 1, the utility model discloses a disinfection and sterilization device, which comprises a mounting seat 1, an ultraviolet lamp 2 and a flexible filter film 3. Optionally, the shape of the flexible filter film 3 is tubular, the flexible filter film 3 is sleeved on the strip ultraviolet lamp 2, and the ultraviolet lamp 2 is mounted on the mounting seat 1. The flexible filter film 3 is sleeved on the ultraviolet lamp 2, so that the flexible filter film 3 can be more stably fixed on the ultraviolet lamp 2.

Optionally, as shown in fig. 2 to 5, the disinfection and sterilization device further comprises a condensing plate 4 and an ultrasonic transducer 5. The mounting seat 1 is provided with a mounting groove 11, and the length direction of the mounting groove 11 is the same as the length direction of the mounting seat 1. Alternatively, the light condensing plate 4 may be made of a stainless steel material, for example. The cross-sectional shape of the light condensing plate 4 is U-shaped. The two sides of the condensing plate 4 along the length direction are respectively provided with a clamping edge 41, the mounting groove 11 is internally provided with a clamping groove 12 matched with the clamping edge 41, and the condensing plate 4 is fixedly clamped with the mounting seat 1 by arranging the clamping edge 41 in the clamping groove 12. The first mounting plate 13 and the second mounting plate 14 are respectively mounted at both ends of the mounting base 1 in the longitudinal direction thereof. The first mounting plate 13 and the second mounting plate 14 are respectively provided with a power supply seat 15 for supplying power to the ultraviolet lamp 2. The ultraviolet lamp 2 is arranged in the mounting groove 11, at this time, two ends of the ultraviolet lamp 2 are respectively inserted into the power supply seats 15 on the first mounting plate 13 and the second mounting plate 14, and regarding the specific arrangement of the power supply seats 15, a person skilled in the art can set the power supply seats 15 according to experience, and ensure that the power supply seats 15 supply power to the ultraviolet lamp 2. When the ultraviolet lamp 2 is mounted on the mount 1, the light condensing plate 4 is located between the ultraviolet lamp 2 and the mount 1. The light condensing plate 4 is provided between the ultraviolet lamp 2 and the mount 1, and the irradiation angle of the ultraviolet lamp 2 can be limited, thereby controlling the irradiation range of the ultraviolet lamp.

Alternatively, as shown in fig. 3 and 5, the flexible filter film 3 is in a sheet shape, and the flexible filter film 3 is disposed at the notch of the mounting groove 11, and at this time, the flexible filter film 3 completes the covering of the ultraviolet lamp 2. For example, the flexible filter film 3 may be adhered to the notch of the mounting groove 11. Such an arrangement of the flexible filter film 3 facilitates later replacement.

Through setting up flexible filter membrane 3 on ultraviolet lamp 2, can make ultraviolet lamp 2 pass through after the filter effect of flexible filter membrane 3 and obtain the ultraviolet ray that the wavelength is 222nm to satisfy and carry out ultraviolet disinfection to the environment in first space 8 under the circumstances that exists the people in first space 8 such as classroom, office, bedroom and factory building.

Alternatively, as shown in fig. 2 to 5, at least one ultrasonic transducer 5 is provided on the mount 1, and the ultrasonic transducer 5 is located on a side where the mounting groove 11 is provided.

Alternatively, the ultrasonic transducer 5 may take a cylindrical shape as shown in fig. 3. When the number of the ultrasonic transducers 5 is plural, the ultrasonic transducers 5 are disposed on the mounting base 1 and are located on a side surface provided with the mounting groove 11. The plurality of ultrasonic transducers 5 are respectively provided on both sides of the mounting groove 11 in the longitudinal direction thereof.

Alternatively, the shape of the ultrasonic transducer 5 may take a circular shape as shown in fig. 5. At least two circular ultrasonic transducers 5 are in one group, for example, three circular ultrasonic transducers 5 are in one group, and when the number of the ultrasonic transducers 5 is multiple, the multiple ultrasonic transducers 5 are all arranged on the mounting seat 1 and are all positioned on one side surface provided with the mounting groove 11. The plurality of ultrasonic transducers 5 are respectively provided on both sides of the mounting groove 11 in the longitudinal direction thereof.

The ultrasonic energy converter 5 is arranged on the mounting seat 1, so that the ultrasonic wave has a strong diffraction effect to assist in sterilization, and the ultrasonic wave emitted by the ultrasonic energy converter 5 is utilized to sterilize the first space 8 while the ultraviolet lamp 2 is utilized to sterilize the ultraviolet ray in the first space 8. The utility model adopts ultraviolet rays and ultrasonic waves to carry out composite sterilization and disinfection on the first space 8 where people exist, has high safety and no harm to human bodies, and can finish the sterilization work in a short time.

Optionally, as shown in fig. 6 and 7, the sterilization device further comprises a displacement assembly 6 capable of driving the mounting seat 1 to move. The displacement assembly 6 comprises a first fixing plate 61, a second fixing plate 62, a driving motor 63, a screw 64 and a displacement block 65. The first fixing plate 61 and the second fixing plate 62 are L-shaped. The first fixing plate 61 is inserted through a hole of one end of the first fixing plate 61 by a bolt and mounted on the ceiling of the classroom. The output shaft of the driving motor 63 is then passed through the rotation hole 67 at the other end of the first fixing plate 61, and the driving motor 63 is mounted on the first fixing plate 61. And then one end of the screw rod 64 is fixedly connected with the output shaft of the driving motor 63. The displacement block 65 is provided with a threaded hole 66 which is matched with the screw rod 64. The displacement block 65 is disposed on the mounting base 1, and the displacement block 65 is located on a side surface of the mounting base 1 away from the mounting groove 11. The second fixing plate 62 is mounted on the ceiling of the house by penetrating the hole at one end of the second fixing plate 62 with a bolt, and finally, the other end of the screw rod 64 is inserted into the threaded hole 66 of the displacement block 65 and is disposed in the rotation hole 67 at the other end of the second fixing plate 62, so that the second fixing plate 62 can make the rotation of the screw rod 64 more stable. Through installing displacement subassembly 6 on mount pad 1, can make the disinfection more nimble to carry out comprehensive disinfection in the first space.

Optionally, as shown in fig. 8, the sterilization device further comprises a moving assembly 7 capable of driving the ultrasonic transducer 5 to move. The mobile assembly 7 includes an electric putter 71, for example, the electric putter 71 may be a TGE type electric putter 71 sold by the electric appliance company, kanji, bergamot. The electric pushrod 71 includes a telescoping end 72. The ultrasonic transducer 5 is disposed on the fixing seat 51, one end of the fixing seat 51 is configured with a socket 52, and the telescopic end 72 of the electric push rod 71 can be inserted into the socket 52 and can drive the ultrasonic transducer 5 to move.

Alternatively, as shown in fig. 8 to 11, the mount 1 is internally configured with a mount cavity 16, and a side surface provided with the mount groove 11 is configured with a waist-shaped hole 17, and the mount cavity 16 can communicate with the outside through the waist-shaped hole 17. The electric push rod 71 is disposed in the mounting chamber 16, and the main body of the electric push rod 71 is mounted on the first mounting plate 13 or the second mounting plate 14. When the electric push rod 71 is disposed in the mounting cavity 16, the ultrasonic transducer 5 is also disposed in the mounting cavity 16, and the ultrasonic transducer 5 is located at the waist-shaped hole 17. The ultrasonic transducer 5 can emit ultrasonic waves outside the mounting cavity 16 through the waist-shaped hole 17. By driving the electric push rod 71 to move the ultrasonic transducer 5, the sterilization angle and sterilization range of the ultrasonic transducer 5 are increased.

Alternatively, as shown in fig. 8 to 10, when the number of the ultrasonic transducers 5 is plural, at least one ultrasonic transducer 5 is fixedly connected with the telescopic end 72 of the electric putter 71.

Alternatively, as shown in fig. 8 and 11, when the number of the ultrasonic transducers 5 is plural, the holders 51 of the adjacent two ultrasonic transducers 5 are connected by a connecting rod. Wherein, an ultrasonic transducer 5 at the end is fixedly connected with a telescopic end 72 of the electric push rod 71.

Optionally, a drag chain is also disposed within the mounting cavity 16. The drag chain is used to comfort the wires of the ultrasound transducer 5 for movement of the ultrasound transducer 5.

As shown in fig. 12 and 13, the present utility model further discloses a system with a sterilization device, which includes a first space 8 and the sterilization device according to any of the above optional embodiments. A classroom may be considered as the first space 8, or an office may be considered as the first space 8, or a factory building may be considered as the first space 8, or a bedroom may also be considered as the first space 8. The first space 8 includes a first plane 81 and a second plane 82, and in the following embodiments, for convenience of description, a classroom is taken as an example of the first space 8, a ceiling of the classroom can be regarded as the first plane 81, and a floor of the classroom can be regarded as the second plane 82. The wall of the classroom can be regarded as the first plane 81 and the obliquely arranged ceiling in the classroom can also be regarded as the first plane 81. The disinfection and sterilization device can be arranged on the ceiling of the classroom and the ground of the classroom at the same time, or the disinfection and sterilization device can be arranged on the ceiling of the classroom, or the disinfection and sterilization device can be arranged on the ground of the classroom. Such an arrangement enables a complete killing operation of the first space 8.

Alternatively, as shown in fig. 12, when the number of the disinfection and sterilization apparatuses is plural, the plural disinfection and sterilization apparatuses are all disposed on the ceiling of the classroom and are uniformly arranged at intervals along the first direction, and the length direction of the classroom can be regarded as the first direction. The disinfection area of the disinfection and sterilization device in the first space 8 is increased.

Alternatively, as shown in fig. 12, when the ceiling of the classroom is parallel to the floor of the classroom, a plurality of sterilization devices provided on the ceiling of the classroom are disposed to cross a plurality of sterilization devices provided on the floor of the classroom. The sterilization area in the first space 8 is further increased by adopting a mode that a plurality of sterilization devices are arranged in an up-down crossing way.

In the present utility model, the meaning of "kill on person" means that a person who is wearing ordinary and does not need special protection performs killing in an environment on site.

Preferably, for example, the flexible filter film 3 may be the flexible filter film 3 disclosed in the application of the utility model of 202211313416X. The inventor has studied and analyzed this carefully, and it is obvious that the best way to filter such wide-space, wide-angle light-emitting excimer light sources with filters while preserving the wide-space, wide-angle light source illumination characteristics is to use flexible filter films or absorbing filter elements that are compatible with the light-emitting tube. At a minimum, the direction of illumination is conformal, rather than using a flat filter. Since krypton chloride excimer light sources emit mainly 222nm deep ultraviolet light, other wavelengths of ultraviolet light also exist, which are actually derived from transitions of other energy levels formed during discharge of the mixed gas in the lamp light, mainly from three energy levels, as shown in fig. 14.

For the first peak, its peak wavelength is about 235nm, and because of its shorter wavelength, its penetration in organisms is poor, the epidermis and tear layer of the skin substantially blocks the light it emits, so it is only slightly filtered; for ultraviolet light of 325nm, damage to organisms is not realized by DNA damage due to longer wavelength, but is generated by other mechanisms, obvious damage to human bodies is required in consideration of the fact that the human bodies have repair capability, the radiation dose of the ultraviolet light is very high, the light energy of 325nm and 235nm emitted by the excimer lamp has a small proportion to the light energy emitted by the whole lamp, and under the condition of human sterilization, special treatment can be omitted because the radiation intensity cannot be very high.

Of the ultraviolet light emitted from the excimer lamp, 257nm ultraviolet light is the most harmful to humans. UVC radiation at 257nm is below 0.2 mu W/c square meter according to IEC62471 standard to ensure long-term exposure safety, and irradiance of short-term exposure UVC radiation is not more than 1.7 mu W/c square meter. WS/T367-2012 standard of medical institution disinfection technical Specification, 2009 edition of hospital disinfection technical Specification, ultraviolet germicidal Lamp GB19258-2003 and the like, and related requirements on the power intensity and detection of the ultraviolet germicidal Lamp are met. For the current commercial 222nm excimer lamp, the light intensity of the new lamp is more than 90 mu W/c square meter, the light intensity of the old lamp is required to reach 70 mu W/c square meter, and when the light intensity is less than 40 mu W/c square meter, the disinfection effect cannot be achieved. In the ultraviolet light emitted by the existing 222nm excimer, the 257nm light intensity at the surface reaches about 1.6% of the total light intensity, thus reaching about 90 mu W/c square meter of 257nm ultraviolet light 1.44 mu W/c square meter, when the light source intensity reaches 70 mu W/c square meter, 257nm reaches 1.12 mu W/c square meter, even for 40 mu W/c square meter reaching 0.64 mu W/c square meter, the safety value is still far beyond 0.2 mu W/c square meter, and therefore, the crowd can only be exposed to the light for a short time in reaching the required effective sterilization area. In order to realize safe and effective sterilization, 257nm ultraviolet light needs to be filtered out to realize safe irradiation for human sterilization.

According to the analysis, the human body safety can be ensured by only absorbing ultraviolet light near 257nm ultraviolet light for aligning molecular light, and the requirement of the optical filter on the absorption material is much simpler than that of the band-pass filter, so that the design requirement of the absorption material is reduced. The absorption requirements of the absorbent material are shown in fig. 15.

As is well known to those skilled in the art, many materials are thin to some extent, flexible, and easily attached to the surface of a lamp tube, wherein plastic is a good choice, and the selected absorbing material can be doped into the plastic film forming material by conventional plastic processing techniques to form a flexible film, which is attached to the surface of the lamp tube.

Because deep ultraviolet belongs to short wave ultraviolet, the wavelength is short, the photon energy is high, and degradation is generated on a plurality of plastics, in order to ensure flexibility and tolerance, finding plastics which are not easy to degrade is the preference of making optical filters, wherein fluorine-containing plastics are very good film forming materials, have very strong ultraviolet light degradation resistance, and are very mature through doping modification technology on materials.

In order to ensure the flexibility and tolerance of the filter film, the film forming material is preferably a perfluorinated material; in order to ensure the short wave ultraviolet transmission of 222nm, the film forming material is preferably amorphous perfluorinated resin.

Of the perfluorinated materials, perfluorinated materials transparent to deep ultraviolet are generally amorphous plastics, which are copolymerized or homopolymerized by different plastic monomers.

Many transparent perfluorinated materials are commercially available, such as the TeflonAF series from DuPont, such as AF1600, which have good transparency to deep ultraviolet and are also very stable under ultraviolet irradiation, and can be used as film forming materials for films, and the selected absorbing materials can be doped into the plastics by adopting a proper process to form the flexible filter film finished according to the plastic processing method.

For example, using commercially available Teflon AF solution, which is prepared by dissolving inThe Teflon AF amorphous fluorine polymer in FC-40 is prepared by adding proper amount of nano powder of selective absorbing material into solution, shaking or treating in ultrasonic or other methods to make nano particles fully dissolved in the solution, forming a thin layer on a glass substrate by spraying, rotating, brushing, immersing and the like, heating and baking, and removing the transparent absorbing film from the glass substrate after cooling to obtain the flexible filter film.

For ultraviolet sterilization, the scattered light emitted from the optical filter can not only sterilize viruses, but also overcome the shielding effect when direct light encounters obstacles. Although some perfluorinated materials have unsatisfactory ultraviolet transparency, the material has weak ultraviolet absorption capacity, so perfluorinated materials with unsatisfactory transparency can be selected as film forming materials to reduce cost.

As regards the choice of the absorbing material, it is considered to have a synergistic effect with the properties of the film-forming material. For example, when an ultraviolet absorbing material is added to a film-forming material, if the size of the absorbing particles is too large, dispersion is poor, strong scattered light is generated on the particles, and although forward scattered light is advantageous for the cancellation, backward scattered light may be lost elsewhere, so that the particle size of the absorbing material should not be too large, and may be 1 to 4 times 222nm, in order to ensure efficient transmission of 222nm light, of course, the size of the absorbing particles is preferably less than 222nm, preferably less than half a wavelength or even 1/4 wavelength, but the process difficulty is increased in view of the smaller scattering particles, the particle range should be ensured in the range of 50 to 800nm, preferably 80 to 200nm.

An absorbent material having a particle size of 50-800nm is obtained by mixing a commercially available absorbent material with deionized water according to a ratio of 1: mixing the materials according to the mass ratio of 10-200, and stirring the materials for 1-10 hours under the heating condition.

In order to reduce the 222nm light scattering loss caused after addition, it is required that the light refractive index of the absorbing material should be as uniform as possible with the film-forming material, and therefore, the organic absorbing material may be selected; meanwhile, the particles of the absorbing material should be small and uniformly dispersed in the film-forming material; considering that many absorption materials are incorporated into the solvent to produce strong absorption at the short wavelength end, it is desirable to avoid producing strong absorption at 222nm after the absorption materials are added. The inventors have found that the absorbent material which is capable of meeting the several conditions listed above is a guanidine salt material or a base material.

The inventor finds that besides preparing the flexible filter film by spraying, the flexible filter film can be prepared by grinding a perfluorinated plastic monomer and an absorbing material and then preparing the filter film by a calendaring or extrusion process.

The absorbing material may also be doped into the perfluoroplastic by a suitable process such as spinning or dipping to form a filter film.

In order to ensure flexibility and to ensure 222nm transmission, the thickness of the filter should be between 0.5 and 1000 microns.

In view of the above, the utility model provides a flexible filter film for absorbing harmful ultraviolet light and a preparation method thereof, wherein the flexible filter film is a film which is flexible and resistant to short-wave strong ultraviolet light, has a transmittance higher than 85% at 222nm and a transmittance lower than 80% at 257nm, can enable a krypton chloride excimer lamp source to become a short-wave ultraviolet light source with high efficiency, low cost and large irradiation range, and provides technical assurance for using short-wave ultraviolet light in a large number of human-consumption killing occasions.

The flexible filter film is used for absorbing harmful ultraviolet light, has strong absorption near 257nm and has high transmittance near 222 nm; the flexible filter film comprises an absorption material and a film forming material, wherein the absorption material comprises a guanidine salt material or a base material, and the film forming material is perfluorinated plastics.

Further, the guanidine salt material is guanidine isothiocyanate; the base material is one or more of adenine, adenylate, guanosine, deoxyadenosine, deoxyguanosine and guanine. Adenine (Adenine), adenylic acid (Adenosine), guanosine (Guanosine), deoxyadenosine (Deoxyguanosine), deoxyguanosine (Deoxyguanosine), guanine (Guanine) and the like have strong absorption near 257nm and have high transmittance near 222 nm.

Further, the film-forming material is a fully transparent amorphous perfluorinated plastic.

Further, the thickness of the flexible filter film is between 0.5 and 1000 microns.

Further, the absorbing material is nano powder, and the weight ratio of the absorbing material in the flexible filter film is in the range of 1-15%, preferably 5%.

The preparation method of the flexible filter film for absorbing harmful ultraviolet light comprises the following steps:

s1: at normal temperature, adding 1-15% of nano powder of an absorbing material into a film forming material solvent to uniformly mix the nano powder and the film forming material solvent;

s2: spraying the uniformly mixed mixture on a substrate to form a coating film;

s3: maintaining the substrate with the coating film for 4 hours at 160-240 ℃;

s4: and cooling, and removing the coating film from the substrate to obtain the flexible filter film.

Further, the granularity of the absorption material nano powder is 50-800nm.

Further, in step S1, the mixture is vibrated by an ultrasonic irradiation device having an intensity of 10 to 90 mpa to increase the mixing speed of the absorbing material in the film-forming material solvent.

According to another technical scheme, the preparation method of the flexible filter film for absorbing harmful ultraviolet light comprises the steps of grinding perfluorinated plastic monomers and absorbing materials, and then manufacturing the flexible filter film according to a calendaring or extrusion process.

According to another technical scheme, the preparation method of the flexible filter film for absorbing harmful ultraviolet light adopts a rotating or immersing process, and a mixture of a film forming material and an absorbing material is processed to form a film so as to obtain the flexible filter film.

The light emitted by the krypton chloride excimer lamp is not required to be converted into the quasi-straight light, and the problems that the traditional band-pass filter/film or narrow-band filter is low in efficiency and harmful light cannot be filtered are solved.

The ultraviolet light is collimated without adopting a complex light filtering device, and the problems of large light loss and small sterilization range are avoided.

The light absorption capacity at 257nm is far greater than that at 222nm, and the filtering efficiency is improved.

The flexible filter film is attached to the krypton chloride excimer lamp tube, so that the condition that light with a large angle can be reflected by a flat plate is avoided, and the illumination space area is large, the illumination with a wide angle and the uniformity of the light are good.

The flexible filter film is attached to the krypton chloride excimer lamp tube, so that the krypton chloride excimer lamp can be a short-wave ultraviolet light source with high efficiency, low cost and large irradiation range, and the application range and commercial value of the krypton chloride excimer lamp are greatly improved.

Example 1 of Flexible Filter film

A preparation method of the flexible filter film for absorbing harmful ultraviolet light comprises the following steps: firstly, at normal temperature, 10g of pure guanidine isothiocyanate is dissolved in 30ml of deionized water, undissolved substances are filtered after the pure guanidine isothiocyanate is completely dissolved, then the pure guanidine isothiocyanate is poured into 100ml of perfluorinated solvent, heated to 80 ℃, treated by means of high-pressure homogenization, high-speed stirring or strong ultrasonic treatment and the like to prepare nano water-in-oil emulsion, then the nano water-in-oil emulsion is poured into amorphous fluoropolymer solution (AF 1601), the amorphous fluoropolymer solution and the amorphous fluoropolymer emulsion are fully mixed by stirring, the mixed solution is coated on clean flat glass by spraying means to form a thin layer with the thickness of about 2-5 mu m, and then the thin layer is sent into a high-temperature baking oven to be slowly heated to the temperature above the solvent removal temperature (the temperature is 160 ℃), kept at the constant temperature for 4 hours, then the thin layer is slowly cooled to the normal temperature, and the formed film layer is peeled off from the glass, thus obtaining the flexible filter film with the thickness of about 2 mu m. The ultraviolet light absorption curve of the film was examined and is shown in FIG. 16.

As can be seen from fig. 16, the absorption curve of the flexible filter film obtained in this example was 0.04 at 222nm, 0.087 at 235nm, 0.168 at 257nm, and it is apparent that the 257nm absorption was 4.2 times 222nm and that the 235nm absorption was more than 2 times the 222nm absorption.

As shown in fig. 17, the transmittance at 222nm of the flexible filter film obtained in this example was 88%, and the transmittance at 257nm was 75%. In order to ensure the effectiveness of human sterilization, the higher the transmittance at 222nm is, the better the transmittance is, but the less the material which is high in transparency at 222nm and stable to ultraviolet irradiation is, the transmittance at 222nm is inevitably reduced due to residual absorption and scattering after the material is added, but the forward scattering caused by the addition of the absorption particles reduces the transmittance, but the light has an effect on sterilization, so that the transmittance of 88% is very good. In order to ensure the safety of human disinfection, under the condition of ensuring high transmittance at 222nm, the transmittance at 257nm should be as low as possible, and the transmittance difference of the filter film at the two wavelengths is a key index of the quality of the filter film, and the larger the transmittance difference at the two wavelengths is, the better. We have here shown that the preliminary test results have reached a transmission difference of 13% and that if the effect of scattering is considered (due to the shorter wavelength of 222nm, the scattering is greater), the ratio can be more than 15% for the no scattering state.

Of course, 30ml of guanidine isothiocyanate aqueous solution and 200ml of perfluoro solvent may be directly dissolved in amorphous fluoropolymer (AF 1601) solution, and the mixture may be treated by high-pressure homogenization, high-speed stirring, or intense ultrasound to prepare nano water-in-oil emulsion (about 6 hours of treatment), and the mixed solution may be coated on clean plate glass by spraying to form a thin layer of about 2-5 μm, and then the plate glass may be sent into a high-temperature oven to be slowly heated to a temperature above the solvent removal temperature (160 ℃) and kept at constant temperature for 4 hours, and then slowly cooled to normal temperature, and then the formed film layer is peeled off from the plate glass, thereby obtaining an absorption curve similar to that of FIG. 16.

Example 2 of Flexible Filter film

A preparation method of the flexible filter film for absorbing harmful ultraviolet light comprises the following steps: firstly, 1g of pure adenine is dissolved in 50ml of deionized water at 80 ℃, undissolved substances are filtered after the pure adenine is completely dissolved, then the pure adenine is poured into 100ml of perfluorinated solvent with the temperature of 90 ℃, the perfluorinated solvent is processed by means of high-pressure homogenization, high-speed stirring or strong ultrasonic treatment to prepare nano water-in-oil emulsion, then the nano water-in-oil emulsion is poured into amorphous fluoropolymer solution (AF 2400), the amorphous fluoropolymer solution is fully mixed by stirring, the mixed solution is coated on clean flat glass by spraying means to form a thin layer with the thickness of about 2-5 mu m, the thin layer is then sent into a high-temperature baking oven to be slowly heated to the temperature above the solvent removal temperature (the temperature is 240 ℃), the temperature is kept for 4 hours, and then the thin layer is slowly cooled to normal temperature, and the formed film layer is peeled off from the flat glass, thus obtaining the flexible filter film with the thickness of about 2 mu m. The ultraviolet light absorption curve of the film is shown in fig. 18.

As can be seen from fig. 18, the absorption curve of the flexible filter film obtained in this example was 0.021 at 222nm, 0.064 at 235nm, 0.150 at 257nm, and it is apparent that the 257nm absorption was 7 times as large as 222nm and that the 235nm absorption was 3 times as large as 222nm absorption.

Example 3 of Flexible Filter film

A preparation method of the flexible filter film for absorbing harmful ultraviolet light comprises the following steps: firstly, at 80 ℃, 10g of pure adenine is dissolved in 500ml of water (deionized water), undissolved substances are filtered after the pure adenine is completely dissolved, then 1Kg of amorphous perfluorinated material AF2400 is mixed with adenine water solution, mixed and ground into fine powder in a ball mill, and then the fine powder is extruded into a flexible filter film according to an AF2400 calendaring process. The ultraviolet light absorption curve of the film is shown in fig. 19.

As can be seen from fig. 19, the absorption curve of the flexible filter film obtained in this example was 0.057 at 222nm, 0.072 at 235nm, 0.150 at 257nm, and it is apparent that the 257nm absorption was 2.6 times that of 222nm, and that the 235nm absorption was more than 1.3 times that of 222 nm.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An apparatus for sterilization, comprising:

the mounting seat (1) is provided with a mounting groove (11);

an ultraviolet lamp (2) arranged in the mounting groove (11);

a flexible filter film (3) covered on the ultraviolet lamp (2); the flexible filter film (3) is used for absorbing harmful ultraviolet light, has strong absorption near 257nm and has very high transmittance near 222 nm; the flexible filter film (3) comprises an absorption material and a film forming material, wherein the absorption material comprises a guanidine salt material or a base material, and the film forming material is perfluorinated plastics;

a light condensing plate (4) arranged in the mounting groove (11) and positioned between the ultraviolet lamp (2) and the mounting seat (1);

and the ultrasonic transducer (5) is arranged on the mounting seat (1).

2. The sterilization device according to claim 1, wherein,

the ultrasonic transducers (5) are distributed on two sides of the ultraviolet lamp (2) along the length direction of the mounting seat (1).

3. The sterilization device of claim 1, further comprising:

one end of the displacement assembly (6) is connected with one side surface of the mounting seat (1); the displacement assembly (6) can drive the mounting seat (1) to move.

4. A sterilization apparatus as claimed in claim 3, wherein said displacement assembly (6) comprises:

a first fixing plate (61) provided on a first plane (81);

a drive motor (63) provided on the first fixing plate (61);

a screw rod (64) provided on an output shaft of the drive motor (63);

the displacement block (65) is arranged on the mounting seat (1); the displacement block (65) is provided with a threaded hole (66) matched with the screw rod (64).

5. The sterilization apparatus as defined in claim 4, wherein said displacement assembly (6) further comprises:

the second fixing plate (62) is arranged at one end of the screw rod (64) far away from the driving motor (63).

6. The sterilization device of claim 1, further comprising:

-a moving assembly (7) connected at one end to at least one of said ultrasound transducers (5); the moving assembly (7) can drive the ultrasonic transducer (5) connected with the moving assembly to move.

7. The sterilization apparatus as defined in claim 6, wherein said moving assembly (7) comprises:

the electric push rod (71) comprises a telescopic end (72), and the telescopic end (72) is connected with at least one ultrasonic transducer (5).

8. A system having an disinfection apparatus, comprising:

a first space (8) comprising a first plane (81) and a second plane (82);

the disinfection apparatus of any one of claims 1-7, being arranged on said first plane (81) and/or said second plane (82).

9. The system with sterilization device according to claim 8, wherein,

a plurality of the disinfection and sterilization devices are uniformly distributed at intervals along a first direction on the first plane (81).

10. The system with sterilization device according to claim 8, wherein,

when the first plane (81) is parallel to the second plane (82), a plurality of disinfection and sterilization devices arranged on the first plane (81) are arranged in a crossing manner with a plurality of disinfection and sterilization devices arranged on the second plane (82).