CN111921826A - Method for maintaining light flux of high-power quartz glass tube ultraviolet sterilizing lamp - Google Patents
Method for maintaining light flux of high-power quartz glass tube ultraviolet sterilizing lamp Download PDFInfo
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- CN111921826A CN111921826A CN202010444868.6A CN202010444868A CN111921826A CN 111921826 A CN111921826 A CN 111921826A CN 202010444868 A CN202010444868 A CN 202010444868A CN 111921826 A CN111921826 A CN 111921826A
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- quartz glass
- glass tube
- protective film
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- luminous flux
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
- B05D7/225—Coating inside the pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
- B05D2203/35—Glass
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention provides a method for maintaining high-power ultraviolet germicidal lamp luminous flux, which comprises the following steps: coating the inner wall of the quartz glass tube which is cleaned and dried with a nano-scale oxide protective film solution, and baking and forming. The invention provides a method capable of effectively maintaining the luminous flux of the ultraviolet sterilizing lamp aiming at a quartz glass tube, remarkably slows down the growth of amalgam, effectively maintains the ultraviolet radiation efficiency, prolongs the service life of the ultraviolet sterilizing lamp, and has good social significance, engineering practice significance and guidance significance.
Description
Technical Field
The invention belongs to the field of manufacturing of electric light sources in the lighting industry, and particularly relates to a method for maintaining the luminous flux of ultraviolet sterilizing light of a high-power quartz glass tube.
Background
The ultraviolet germicidal lamp has a gas discharge type ultraviolet light source, namely a low-pressure mercury lamp, and a solid type ultraviolet light emitting diode, namely a UVC-LED according to the light emitting mechanism. The low-pressure mercury vapor emits characteristic spectral lines with 253.7nm and 185nm wavelengths after being excited, ultraviolet rays with the wavelengths have photochemical action with cell genetic materials, namely DNA, and the energy of ultraviolet photons is absorbed by base pairs in the DNA to cause genetic material variation, so that bacteria die immediately or cannot reproduce later generations, thereby achieving the aim of sterilization. The UVC-LED can accurately manufacture a single spectral line with the highest sterilization efficiency, and has the advantages of long service life, low voltage, no mercury, environmental protection, firmness, shock resistance, small size and light weight.
The ultraviolet germicidal lamp needs to adopt quartz glass composed of oxides with smaller molecular weight, the ultraviolet transmittance reaches more than 90%, and some ultraviolet-transmitting glasses such as borate glass and phosphate glass have lower cost than the quartz glass, but the ultraviolet transmittance is only 60% of that of the quartz glass, so the ultraviolet germicidal lamp adopts the quartz glass as the preferred material of the glass bulb. The ultraviolet germicidal lamp with power of more than 100W or smaller tube diameter has larger tube wall load, impurities such as alkali metal in quartz glass and mercury generate amalgam at high temperature, the quartz glass is devitrified, the ultraviolet light transmitting capacity is attenuated and finally loses effectiveness, and meanwhile, due to mercury loss, the optimal mercury vapor pressure cannot be maintained, so that the luminous efficiency is reduced.
Therefore, how to maintain the flux of the high-power UV germicidal lamp light is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the problems, the invention discloses a method for maintaining the luminous flux of an ultraviolet sterilizing lamp of a high-power quartz glass tube.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for maintaining the luminous flux of ultraviolet sterilizing lamp of a high-power quartz glass tube comprises the following steps: coating the inner wall of the quartz glass tube which is cleaned and dried with a nano-scale oxide protective film solution, and baking and forming.
Further, the components of the nanoscale oxide protective film solution and the mass percentages of the components are respectively as follows: oxide powder: 3-10 wt%, pure solvent: 10-30 wt%, binder solution: 60-80 wt%, and the balance of additives.
Further, the preparation method of the nanoscale oxide protective film solution comprises the following steps:
(1) sequentially adding oxide powder, pure solvent and additive into the tank body, finally adding binder solution, stirring uniformly at low speed, and standing;
(2) stirring at a high speed of 20 meters per second at a linear speed, continuously stirring for 30-60 minutes, stopping stirring, standing for 10 minutes, and repeating the steps for 2-4 times to obtain the nanoscale oxide protective film solution.
Furthermore, the nano-scale oxide protective film solution has a viscosity of 5-15 seconds, a specific gravity of 120-140% and a pH of 5.0-6.0.
Further, the oxide powder is Al2O3Powder; the pure solvent is deionized water or distilled water; the additive is dispersant and surfactant; the concentration of the binder solution is 3-6%, the solute is binder raw powder, and the solvent is deionized water or distilled water.
Further, the preparation method of the binder solution comprises the following steps: dividing the solvent into two parts, pouring the first part of the solvent into a vessel, and stirring by using a low-speed stirrer; and adding the second part of solvent into a vessel, pouring the binder raw powder, and continuously stirring for 2-4 hours.
Further, the oxide powder is nano Al prepared by a vapor phase method2O3The powder has the purity of more than 99.8 percent, the primary particle size of 10-30 mm, the specific surface area of 90-130 and the PH value of 4.5-5.5.
Further, the solution for coating the nano-scale oxide protective film on the inner wall is coated on the inner wall of the quartz glass tube which is cleaned and dried by adopting a pouring coating method or a spraying coating method or a suction coating method.
Further, the specific method of baking and forming is as follows:
(a) conveying the quartz glass tube with the inner wall coated with the nano-scale oxide protective film solution to an oven or drying equipment, keeping the drying temperature at 50-100 ℃, blowing hot air into the quartz glass tube, and keeping for 20-40 seconds until the nano-scale oxide protective film solution is dried into a nano-scale oxide protective film; then keeping the drying temperature at 100-300 ℃, and keeping for 2-5 minutes until the nano-scale oxide protective film is firmly adhered to the inner wall of the quartz glass tube; finally, the drying temperature is kept at 50-100 ℃, and the temperature is kept for 1-2 minutes to eliminate the residual stress in the quartz glass tube;
(b) conveying the quartz glass tube with the dried oxide protective film into a tube baking device, slowly heating the quartz glass tube to 450-550 ℃, and preserving heat for 3-5 minutes; heating to 700-800 ℃, and keeping the temperature for 2-4 minutes; then cooling to 450-550 ℃, and preserving heat for 1-3 minutes; and finally, gradually reducing the temperature to the normal temperature.
Further, in the steps (a) and (b), the silica glass tube is in a self-rotating state during baking, and oxygen is blown into the silica glass tube to completely decompose the binder.
Compared with the prior art, the invention provides a method capable of effectively maintaining the luminous flux of the ultraviolet sterilizing lamp aiming at the quartz glass tube, obviously slows down the growth of the amalgam, effectively maintains the ultraviolet radiation efficiency, prolongs the service life of the ultraviolet sterilizing lamp, has good social significance, and also has engineering practice significance and guidance significance.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions provided by the present invention will be described in detail below with reference to specific examples, and it should be understood that the following specific embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention.
The invention provides a method for maintaining the luminous flux of ultraviolet sterilizing light of a high-power quartz glass tube, which comprises the following steps: coating the inner wall of the quartz glass tube which is cleaned and dried with a nano-scale oxide protective film solution, and baking and forming. Wherein, the solution for coating the nanometer oxide protective film on the inner wall is coated on the inner wall of the quartz glass tube which is cleaned and dried by adopting a pouring coating method, a spraying coating method or a suction coating method.
The components of the nanoscale oxide protective film solution in the method and the mass percentages of the components are respectively as follows: oxide powder: 3-10 wt%, pure solvent: 10-30 wt%, binder solution: 60-80 wt%, and the balance of additives.
The nano-scale oxide protective film solution has the viscosity of 5-15 seconds, the specific gravity value of 120-140% and the pH value of 5.0-6.0; the preparation method comprises the following steps:
(1) sequentially adding oxide powder, pure solvent and additive into the tank body, finally adding binder solution, stirring uniformly at low speed, and standing;
(2) stirring at a high speed of 20 meters per second at a linear speed, continuously stirring for 30-60 minutes, stopping stirring, standing for 10 minutes, and repeating the steps for 2-4 times to obtain the nanoscale oxide protective film solution.
The oxide powder in the step (1) is nano Al prepared by a vapor phase method2O3The powder has the purity of more than 99.8 percent, the primary particle size of 10-30 mm, the specific surface area of 90-130 and the PH value of 4.5-5.5; the pure solvent is deionized water or distilled water; the additive is dispersant and surfactant; the concentration of the binder solution is 3-6%, the solute is binder raw powder, and the solvent is deionized water or distilled water.
The preparation method of the binder solution comprises the following steps: dividing the solvent into two parts, pouring the first part of the solvent into a vessel, and stirring by using a low-speed stirrer; and adding the second part of solvent into a vessel, pouring the binder raw powder, and continuously stirring for 2-4 hours.
The specific method for baking and forming comprises the following steps:
(a) conveying the quartz glass tube with the inner wall coated with the nano-scale oxide protective film solution to an oven or drying equipment, keeping the drying temperature at 50-100 ℃, blowing hot air into the quartz glass tube, and keeping for 20-40 seconds until the nano-scale oxide protective film solution is dried into a nano-scale oxide protective film; then keeping the drying temperature at 100-300 ℃, and keeping for 2-5 minutes until the nano-scale oxide protective film is firmly adhered to the inner wall of the quartz glass tube; finally, the drying temperature is kept at 50-100 ℃, and the temperature is kept for 1-2 minutes to eliminate the residual stress in the quartz glass tube;
(b) conveying the quartz glass tube with the dried oxide protective film into a tube baking device, slowly heating the quartz glass tube to 450-550 ℃, and preserving heat for 3-5 minutes; heating to 700-800 ℃, and keeping the temperature for 2-4 minutes; then cooling to 450-550 ℃, and preserving heat for 1-3 minutes; and finally, gradually reducing the temperature to the normal temperature.
In the steps (a) and (b), the quartz glass tube is in a self-rotating state during baking, and oxygen is blown into the quartz glass tube at the same time, so that the adhesive is thoroughly decomposed.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.
Claims (10)
1. A method for maintaining the luminous flux of ultraviolet sterilizing lamp of a high-power quartz glass tube is characterized by comprising the following steps: the method comprises the following steps: coating the inner wall of the quartz glass tube which is cleaned and dried with a nano-scale oxide protective film solution, and baking and forming.
2. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 1, wherein: the nanometer oxide protective film solution comprises the following components in percentage by mass: oxide powder: 3-10 wt%, pure solvent: 10-30 wt%, binder solution: 60-80 wt%, and the balance of additives.
3. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 2, wherein: the preparation method of the nanoscale oxide protective film solution comprises the following steps:
(1) sequentially adding oxide powder, pure solvent and additive into the tank body, finally adding binder solution, stirring uniformly and standing;
(2) stirring at a high speed of 20 meters per second at a linear speed, continuously stirring for 30-60 minutes, stopping stirring, standing for 10 minutes, and repeating the steps for 2-4 times to obtain the nanoscale oxide protective film solution.
4. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 1, wherein: the nano-scale oxide protective film solution has a viscosity of 5-15 seconds, a specific gravity of 120-140% and a pH of 5.0-6.0.
5. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 2, wherein: the oxide powder is Al2O3Powder; the pure solvent is deionized water or distilled water; the additive is a dispersant and a surfactant; the concentration of the binder solution is 3-6%, the solute is binder raw powder, and the solvent is deionized water or distilled water.
6. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 5, wherein: the preparation method of the binder solution comprises the following steps: dividing the solvent into two parts, pouring the first part of the solvent into a vessel, and stirring by using a low-speed stirrer; and adding the second part of solvent into a vessel, pouring the binder raw powder, and continuously stirring for 2-4 hours.
7. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 5, wherein: the oxide powder is nano Al prepared by a vapor phase method2O3The powder has the purity of more than 99.8 percent, the primary particle size of 10-30 mm, the specific surface area of 90-130 and the PH value of 4.5-5.5.
8. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 1, wherein: and the solution for coating the nanoscale oxide protective film on the inner wall is coated on the inner wall of the cleaned and dried quartz glass tube by adopting a pouring coating or spraying coating or suction coating method.
9. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 1, wherein: the specific method for baking and forming comprises the following steps:
(a) conveying the quartz glass tube with the inner wall coated with the nano-scale oxide protective film solution to an oven or drying equipment, keeping the drying temperature at 50-100 ℃, blowing hot air into the quartz glass tube, and keeping for 20-40 seconds until the nano-scale oxide protective film solution is dried into a nano-scale oxide protective film; then keeping the drying temperature at 100-300 ℃, and keeping for 2-5 minutes until the nano-scale oxide protective film is firmly adhered to the inner wall of the quartz glass tube; finally, the drying temperature is kept at 50-100 ℃, and the temperature is kept for 1-2 minutes to eliminate the residual stress in the quartz glass tube; (b) conveying the quartz glass tube with the dried oxide protective film into a tube baking device, slowly heating the quartz glass tube to 450-550 ℃, and preserving heat for 3-5 minutes; heating to 700-800 ℃, and keeping the temperature for 2-4 minutes; then cooling to 450-550 ℃, and preserving heat for 1-3 minutes; and finally, gradually reducing the temperature to the normal temperature.
10. The method for maintaining the luminous flux of the ultraviolet germicidal lamp for the high power quartz glass tube as claimed in claim 9, wherein: and (b) enabling the quartz glass tube to be in a self-rotating state during baking, and blowing oxygen into the quartz glass tube to thoroughly decompose the binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010444868.6A CN111921826A (en) | 2020-05-23 | 2020-05-23 | Method for maintaining light flux of high-power quartz glass tube ultraviolet sterilizing lamp |
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| CN202010444868.6A CN111921826A (en) | 2020-05-23 | 2020-05-23 | Method for maintaining light flux of high-power quartz glass tube ultraviolet sterilizing lamp |
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| CN202010444868.6A Pending CN111921826A (en) | 2020-05-23 | 2020-05-23 | Method for maintaining light flux of high-power quartz glass tube ultraviolet sterilizing lamp |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108455649A (en) * | 2018-01-09 | 2018-08-28 | 佛山优维士光电科技有限公司 | A kind of production method of ball shaped nano yttrium oxide powder for quartz burner |
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2020
- 2020-05-23 CN CN202010444868.6A patent/CN111921826A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108455649A (en) * | 2018-01-09 | 2018-08-28 | 佛山优维士光电科技有限公司 | A kind of production method of ball shaped nano yttrium oxide powder for quartz burner |
Non-Patent Citations (5)
| Title |
|---|
| 中国照明电器协会组织编写: "《紧凑型荧光灯设计与制造》", 30 June 2012, 中国轻工业出版社 * |
| 吕家东: "深紫外光源技术及其应用", 《2017年中国照明论坛——半导体照明创新应用于智慧照明发展论坛论文集》 * |
| 吴文东等: "高透紫外线纳米保护膜的研发及其在紫外线灯管中的应用", 《中国照明电器》 * |
| 陈家驹等: "高输出紫外线杀菌灯", 《中国照明电器》 * |
| 陈枕流等: "无灯丝热阴极紫外线灯管及制作方法", 《中国照明电器》 * |
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Application publication date: 20201113 |
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