CN115043600B - Online coating process and device for medium boron glass tube - Google Patents

Online coating process and device for medium boron glass tube Download PDF

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Publication number
CN115043600B
CN115043600B CN202210753651.2A CN202210753651A CN115043600B CN 115043600 B CN115043600 B CN 115043600B CN 202210753651 A CN202210753651 A CN 202210753651A CN 115043600 B CN115043600 B CN 115043600B
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glass tube
coating
boron glass
chamber
medium
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CN115043600A (en
Inventor
刘卫东
吕应成
樊兴生
戴季初
董淑娟
王春江
王西红
李益
周兴贺
叶振
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Kaisheng Junheng Co ltd
Triumph Junheng Pharmaceutical Glass Chongqing Co ltd
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Kaisheng Junheng Co ltd
Triumph Junheng Pharmaceutical Glass Chongqing Co ltd
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/42Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating of an organic material and at least one non-metal coating
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00Methods for coating glass
    • C03C2218/10Deposition methods
    • C03C2218/15Deposition methods from the vapour phase
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

The invention provides an on-line coating process and device for a medium-boron glass tube, wherein the on-line coating process for the medium-boron glass tube comprises the following steps of: A. making the medium boron glass tube pass through the first coating chamber at a constant speed; B. conveying monosilane, ethylene and nitrogen into a first mixing chamber for mixing, and conveying oxygen, helium and nitrogen into a second mixing chamber for mixing; C. spraying a nozzle in the mixed gas first film coating chamber onto the medium boron glass tube; D. making the medium boron glass tube pass through the second coating chamber at a constant speed; E. uniformly mixing Tween 80 and water, and spraying the surface of the medium boron glass tube by a nozzle which is conveyed to a second coating chamber through a spraying pump. The on-line coating device for the medium boron glass tube comprises a first coating component, a second coating component and a traction component; a plurality of first nozzles are arranged in a first coating chamber of the first coating assembly and are suitable for spraying gas to the surface of the glass tube; a plurality of second nozzles are arranged in a second coating chamber of the second coating assembly and are suitable for spraying liquid to the surface of the glass tube.

Description

Online coating process and device for medium boron glass tube
Technical Field
The invention belongs to the technical field of glass tube coating, and particularly relates to an on-line coating process and device for a medium-boron glass tube.
Background
Neutral borosilicate glass is glass with excellent chemical stability, has higher boron content and lower alkali metal content in composition compared with low borosilicate glass and soda lime glass, and is an internationally accepted safety medicine package material. Neutral borosilicate glass has been used throughout the production of injections in developed countries.
The production process of the neutral borosilicate glass tube comprises the steps of melting, forming, runway annealing, traction machine, primary cutting, fine cutting, packaging and the like from front to back. After the neutral boron glass is primarily cut, glass scraps can be generated, and the glass tubes are scratched when contacting each other or the glass tubes contact with a roller way in the roller way conveying process, so that soap spraying and film plating treatment is required.
However, after the neutral borosilicate glass tube is primarily cut, the edge of the glass tube needs to be heated by flame to carry out finish cutting and round mouth processing, and at the moment, the sprayed soap can disappear due to high-temperature vaporization, so that the glass tube can be scratched in the conveying process.
Disclosure of Invention
The embodiment of the invention provides an online coating process and device for a medium boron glass tube, which aim to solve the technical problem that in the prior art, in the process of conducting finish cutting and round mouth process on a glass tube subjected to soap spraying and coating by flame heating, soap spraying can disappear due to high-temperature vaporization, and the glass tube can be scratched in the conveying process.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an online coating process for a mesoboron glass tube, including the following steps:
A. enabling the medium boron glass tube to uniformly pass through a first coating chamber, wherein the temperature in the first coating chamber is 600-800 ℃;
C. mixing monosilane, ethylene, nitrogen, oxygen and helium, spraying the mixture onto a medium boron glass tube through a nozzle in the first film plating chamber, and forming a silicon dioxide hard film on the medium boron glass tube;
D. enabling the medium boron glass tube to uniformly pass through a second coating chamber, wherein the temperature in the second coating chamber is 100-280 ℃;
E. uniformly mixing Tween 80 and water, conveying the mixed liquid to a nozzle of the second coating chamber through a spraying pump, spraying the surface of the medium boron glass tube, and forming a layer of soft film on a silicon dioxide hard film on the medium boron glass tube.
With reference to the first aspect, in a possible implementation manner, a step B is further provided between the step a and the step C, in which monosilane, ethylene and nitrogen are delivered to the first mixing chamber for mixing, and oxygen, helium and nitrogen are delivered to the second mixing chamber for mixing.
Oxygen, helium, nitrogen are delivered to a second mixing chamber for mixing.
3. With reference to the first aspect, in one possible implementation manner, in the steps a to E, the movement speed of the medium boron glass tube is 100m/min to 800m/min.
With reference to the first aspect, in one possible implementation manner, in the step C, when the movement speed of the medium boron glass tube is 100-800 m/min, the total flow of the mixed gas is 6-60 slpm, wherein the thickness of the silicon dioxide hard film is 20-1000 nm, and the total flow of the mixed gas is 3-30 slpm, 2-30 slpm of helium, 0.05-0.1 slpm of oxygen, 0.01-0.1 slpm of silane, 1-10 slpm of ethylene; the pressure of the mixed gas is 0.05-0.2 MPa during film plating.
With reference to the first aspect, in one possible implementation manner, when the movement speed of the medium boron glass tube is 100m/min, the total flow rate of the mixed gas is 6.56-9.2 slpm, wherein the nitrogen is 3-5 slpm, the helium is 2.5-3 slpm, the oxygen is 0.05-0.08 slpm, the silane is 0.01-0.02 slpm, the ethylene is 1-1.1 slpm, and the thickness of the silicon dioxide hard film is 20nm; the pressure of the mixed gas is 0.05-0.2 MPa during film plating.
With reference to the first aspect, in a possible implementation manner, in step E, the total flow rate of the mixed liquid is 4.3L/h, wherein the ratio of tween 80 to water is 1:25, the output pressure of the spraying pump is 0.04-0.08 MPa.
With reference to the first aspect, in one possible implementation manner, in the step C, exhaust gas generated by the film plating is led out through a fan and then subjected to dilution combustion treatment; in the step E, the waste gas generated after spraying is pumped out by a waste gas fan for treatment.
In a second aspect, an embodiment of the present invention provides an on-line coating apparatus for a medium boron glass tube in an on-line coating process, where the on-line coating process for a medium boron glass tube includes:
the first coating assembly is provided with an air inlet at the outer side and a first coating chamber at the inner side, and a plurality of first nozzles are arranged in the first coating chamber and are suitable for spraying gas to the surface of the medium boron glass tube;
the second coating assembly is provided with a water inlet at the outer side and a second coating chamber at the inner side, and a plurality of second nozzles are arranged in the second coating chamber and are suitable for spraying liquid to the surface of the medium boron glass tube;
the traction assembly is suitable for traction of the middle boron glass tube, so that the middle boron glass tube uniformly passes through the first coating chamber and the second coating chamber.
With reference to the second aspect, in a possible implementation manner, the first film plating assembly includes a first frame body, an annular frame, a plurality of air inlet pipes and a plurality of first nozzles; the middle part of the first frame body is provided with a first coating chamber penetrating through two sides of the first frame body, and two ends of the first coating chamber are suitable for being connected with a medium boron glass tube in a sealing way; an annular chamber is further arranged in the first frame body, an annular groove is further arranged between the annular chamber and the first coating chamber, and the annular groove is communicated with the annular chamber; the annular frame penetrates through the annular groove and is in rotary sealing connection with the first frame body, a sealing cavity is formed between the annular frame and the annular cavity, and a plurality of first nozzles are arranged on the annular frame and are communicated with the sealing cavity; a plurality of baffles are arranged on the upper periphery of the annular frame, a plurality of baffles are arranged in the sealing cavity, one ends of a plurality of first air inlet pipes penetrate through the first frame body and are communicated with the annular cavity, the annular frame is suitable for introducing air into the sealing cavity, and the baffles are blown to drive the annular frame to rotate relative to the first frame body.
With reference to the second aspect, in one possible implementation manner, the second film plating assembly includes a second frame body and a plurality of second nozzles, the middle part of the second frame body is provided with a second film plating chamber penetrating through two sides of the second frame body, two ends of the second film plating chamber are suitable for being in sealing connection with a medium boron glass tube, and the plurality of second nozzles are arranged in the second film plating chamber and connected with the second frame body; the traction assembly comprises a traction roller and a plurality of carrier rollers, wherein the traction roller is arranged between the first coating assembly and the second coating assembly, and the carrier rollers are arranged on one side, far away from the traction roller and the one side, far away from the traction roller, of the first coating assembly and on one side, far away from the traction roller, of the second coating assembly.
The online coating process for the medium boron glass tube has the beneficial effects that: compared with the prior art, the on-line coating process of the medium boron glass tube provided by the invention has the advantages that firstly, the glass tube passes through the first coating chamber, a compact silicon dioxide hard film is coated on the glass tube, then, the glass tube passes through the second coating chamber, and a saponification soft film is coated on the outer side of the silicon dioxide hard film; the soft film is used for avoiding that excessive glass scraps are generated in the primary cutting process of the glass tube, so that the glass tube is scratched, and is used for avoiding that the roller way scratches the glass tube; the silicon dioxide hard film is used for avoiding scratch caused by collision and friction of glass tubes in the transportation process after vaporization and disappearance of the soft film; meanwhile, the saponification soft film disappears, so that the film layer on the surface of the glass tube is thin enough, and the transmittance of the glass tube is improved.
The on-line coating device for the medium boron glass tube has the beneficial effects that: compared with the prior art, the on-line coating device for the medium boron glass tube can sequentially coat a layer of silicon dioxide hard film and a layer of soft modeling film on the glass tube; the soft film is used for avoiding that excessive glass scraps are generated in the primary cutting process of the glass tube, so that the glass tube is scratched, and is used for avoiding that the roller way scratches the glass tube; the silicon dioxide hard film is used for avoiding scratch caused by collision and friction of glass tubes in the transportation process after vaporization and disappearance of the soft film; meanwhile, the saponification soft film disappears, so that the film layer on the surface of the glass tube is thin enough, and the transmittance of the glass tube is improved.
Drawings
FIG. 1 is a schematic diagram of a front view structure of an on-line coating device for a medium boron glass tube according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a first coating assembly of an on-line coating device for a medium boron glass tube according to an embodiment of the present invention;
FIG. 3 is a schematic top view of a first coating assembly of an on-line coating device for a medium boron glass tube according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a schematic diagram of a front view of a second coating assembly of an on-line coating device for a medium boron glass tube according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a second coating assembly of an on-line coating apparatus for a medium boron glass tube according to an embodiment of the present invention
Reference numerals illustrate:
10. a first frame body; 11. an annular frame; 12. an air inlet pipe; 13. a first nozzle;
14. a first coating chamber; 15. an annular chamber; 16. a baffle; 20. a second frame body;
21. a second nozzle; 22. a second coating chamber; 31. a traction roller; 32. and (3) carrying rollers.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the 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 for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, the on-line coating process and apparatus for a mesoboron glass tube according to the present invention will now be described.
An on-line coating process for a medium boron glass tube comprises the following steps:
A. enabling the medium boron glass tube to uniformly pass through a first coating chamber, wherein the temperature in the first coating chamber is 600-800 ℃, preferably 680-700 ℃;
B. conveying monosilane, ethylene and nitrogen into a first mixing chamber for mixing, and conveying oxygen, helium and nitrogen into a second mixing chamber for mixing; the early reaction of monosilane and oxygen is reduced;
C. mixing monosilane, ethylene, nitrogen, oxygen and helium, wherein when the movement speed of the medium boron glass tube is 100-800 m/min, the total flow of the mixed gas is 6-60 slpm, wherein the total flow of the mixed gas is 3-30 slpm of nitrogen, 2-30 slpm of helium, 0.05-0.1 slpm of oxygen, 0.01-0.1 slpm of silane, 1-10 slpm of ethylene and the thickness of a silicon dioxide hard film is 20-1000 nm; the pressure of the mixed gas is 0.05-0.2 Mpa during film plating; preferably, the motion speed of the medium boron glass tube is 100m/min, the total flow of the mixed gas is 6.56-9.2 slpm, wherein the total flow of nitrogen is 3-5 slpm, helium is 2.5-3 slpm, oxygen is 0.05-0.08 slpm, silane is 0.01-0.02 slpm, ethylene is 1-1.1 slpm, and the thickness of the silicon dioxide hard film is 20nm; the pressure of the mixed gas is 0.1MPa during film coating, and the mixed gas is sprayed onto the medium boron glass tube through a nozzle in a first film coating chamber, so that a silicon dioxide hard film is formed on the medium boron glass tube;
D. enabling the medium boron glass tube to pass through a second coating chamber at a constant speed, wherein the temperature in the second coating chamber is 100-280 ℃, and preferably 150 ℃;
E. uniformly mixing Tween 80 and water, wherein the total flow rate of the mixed liquid is 4.3L/h, and the ratio of Tween 80 to water is 1:25, conveying the mixed liquid to a nozzle of a second coating chamber through a spraying pump to spray the surface of the medium boron glass tube, and forming a layer of soft film on a silicon dioxide hard film on the medium boron glass tube, wherein the output pressure of the spraying pump is 0.04-0.08 MPa.
In the step C, waste gas generated by film plating is led out by a fan and then subjected to dilution combustion treatment.
In the step E, the waste gas generated after spraying is pumped out by a waste gas fan for treatment.
The online coating process for the medium boron glass tube has the beneficial effects that: compared with the prior art, the on-line coating process of the medium boron glass tube provided by the embodiment firstly enables the glass tube to pass through the first coating chamber, coats a compact silicon dioxide hard film on the glass tube, then enables the glass tube to pass through the second coating chamber, and coats a saponification soft film on the outer side of the silicon dioxide hard film; the soft film is used for avoiding that excessive glass scraps are generated in the primary cutting process of the glass tube, so that the glass tube is scratched, and is used for avoiding that the roller way scratches the glass tube; the silicon dioxide hard film is used for avoiding scratch caused by collision and friction of glass tubes in the transportation process after vaporization and disappearance of the soft film; meanwhile, the saponification soft film disappears, so that the film layer on the surface of the glass tube is thin enough, and the transmittance of the glass tube is improved.
Based on the same inventive concept, the embodiment of the application also provides an online coating device for the medium boron glass tube in the online coating process, which is characterized by comprising a first coating component, a second coating component and a traction component; the outside of the first coating group is provided with an air inlet, the inside of the first coating group is provided with a first coating chamber 14, and a plurality of first nozzles 13 are arranged in the first coating chamber 14 and are suitable for spraying gas to the surface of the medium boron glass tube; the second coating assembly is provided with a water inlet at the outer side and a second coating chamber 22 at the inner side, and a plurality of second nozzles 21 are arranged in the second coating chamber 22 and are suitable for spraying liquid to the surface of the medium boron glass tube; the pulling assembly is adapted to pull the middle boron glass tube through the first coating chamber 14 and the second coating chamber 22 at a uniform velocity.
Specifically, the traction component pulls the glass tube to sequentially pass through the first coating chamber 14 and the second coating chamber 22 at a speed of 100m/min, and the first coating component is arranged in a 600-800 ℃ area, preferably 680-700 ℃, on the production line; then, introducing mixed gas with the total flow of 6.56-9.2 slpm (wherein, nitrogen is 3-5 slpm, helium is 2.5-3 slpm, oxygen is 0.05-0.08 slpm, silane is 0.01-0.02 slpm and ethylene is 1-1.1 slpm) into a first coating chamber 14 through a first nozzle 13, so that a layer of compact silicon dioxide hard film is formed on a glass tube; setting the second film plating component in the region of 100-280 ℃, and mixing Tween 80 with water according to the weight ratio of 1:25, spraying the mixture on the surface of a glass tube at a flow rate of 4.3L/h, and forming a saponification soft film on the outer layer of the silicon dioxide hard film.
The online coating device for the medium boron glass tube has the beneficial effects that: compared with the prior art, the on-line coating device for the medium boron glass tube can sequentially coat a layer of silicon dioxide hard film and a layer of soft modeling film on the glass tube; the soft film is used for avoiding that excessive glass scraps are generated in the primary cutting process of the glass tube, so that the glass tube is scratched, and is used for avoiding that the roller way scratches the glass tube; the silicon dioxide hard film is used for avoiding scratch caused by collision and friction of glass tubes in the transportation process after vaporization and disappearance of the soft film; meanwhile, the saponification soft film disappears, so that the film layer on the surface of the glass tube is thin enough, and the transmittance of the glass tube is improved.
As shown in fig. 1 to 5, in a specific embodiment, the first film plating assembly includes a first frame body 10, an annular frame 11, a plurality of air inlet pipes 12, and a plurality of first nozzles 13; the middle part of the first frame body 10 is provided with a first coating chamber 14 penetrating through two sides of the first frame body 10, and two ends of the first coating chamber 14 are suitable for being connected with a medium boron glass tube in a sealing way; an annular chamber 15 is further arranged in the first frame body 10, an annular groove is further arranged between the annular chamber 15 and the first coating chamber 14, and the annular groove is communicated with the annular chamber 15; the annular frame 11 passes through the annular groove and is in rotary sealing connection with the first frame body 10, a sealing cavity is formed between the annular frame 11 and the annular cavity 15, and a plurality of first nozzles 13 are arranged on the annular frame 11 and are communicated with the sealing cavity; a plurality of baffles 16 are arranged on the periphery of the annular frame 11, the baffles 16 are arranged in the sealed cavity, the uniform ends of the plurality of first air inlet pipes 12 penetrate through the first frame body 10 and are communicated with the annular cavity 15, and the annular frame is suitable for introducing air into the sealed cavity, and the baffles 16 are blown to drive the annular frame 11 to rotate relative to the first frame body 10.
Specifically, the number of the first nozzles 13 is three, and the first nozzles are uniformly distributed on the annular frame 11 around the glass tube; the number of the air inlet pipes 12 is three, the air inlet pipes are uniformly distributed on the outer side of the first frame body 10, and the uniform ends penetrate into the annular cavity 15; during operation, mixed gas is respectively introduced into the sealing cavity through the three air inlet pipes 12, and the baffle 16 on the annular frame 11 is blown to drive the annular frame 11 to rotate, so that the first nozzle 13 is driven to rotate around the glass tube, the spraying is more uniform, and the quality of the coating film of the glass tube is improved.
As shown in fig. 1 to 7, in a specific embodiment, the second film plating assembly includes a second frame 20 and a plurality of second nozzles 21, a second film plating chamber 22 penetrating through two sides of the second frame 20 is provided in the middle of the second frame 20, two ends of the second film plating chamber 22 are adapted to be connected with a middle boron glass tube in a sealing manner, and a plurality of second nozzles 21 are provided in the second film plating chamber 22 and connected with the second frame 20; the traction assembly comprises a traction roller 31 and a plurality of carrier rollers 32, the traction roller 31 is arranged between the first coating assembly and the second coating assembly, and the carrier rollers 32 are arranged on one side of the first coating assembly far away from the traction roller 31 and one side of the second coating assembly far away from the traction roller 31; the number of the second nozzles 21 is also three, and the second frame 20 is uniformly arranged around the glass tube.
It should be noted that, in order to improve the transmittance of the glass tube, the silica hard film cannot be too thick, if the silica hard film is worn on the production line, the glass tube may be scratched during the later transportation process, and the silica hard film cannot reduce the scraps generated during the primary cutting process of the glass tube; it is therefore desirable to further plate a saponification soft film on the outer layer of the hard silica film as a sacrificial film to reduce glass chips during the primary cutting process while protecting the hard silica film from abrasion.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (8)

1. The on-line coating process for the medium boron glass tube is characterized by comprising the following steps of:
A. enabling the medium boron glass tube to uniformly pass through a first coating chamber, wherein the temperature in the first coating chamber is 600-800 ℃;
C. mixing monosilane, ethylene, nitrogen, oxygen and helium, spraying the mixture onto a medium boron glass tube through a nozzle in the first film plating chamber, and forming a silicon dioxide hard film on the medium boron glass tube;
D. enabling the medium boron glass tube to uniformly pass through a second coating chamber, wherein the temperature in the second coating chamber is 100-280 ℃;
E. uniformly mixing Tween 80 and water, conveying the mixed liquid to a nozzle of the second coating chamber through a spraying pump, spraying the surface of the medium boron glass tube, and forming a layer of soft film on a silicon dioxide hard film on the medium boron glass tube;
the on-line coating device for the medium boron glass tube comprises:
the first film plating assembly is provided with an air inlet at the outer side and a first film plating chamber (14) at the inner side, and a plurality of first nozzles (13) are arranged in the first film plating chamber (14) and are suitable for spraying gas to the surface of the medium boron glass tube;
the second coating assembly is provided with a water inlet at the outer side and a second coating chamber (22) at the inner side, and a plurality of second nozzles (21) are arranged in the second coating chamber (22) and are suitable for spraying liquid to the surface of the medium boron glass tube; and
the traction component is suitable for traction of the middle boron glass tube, so that the middle boron glass tube uniformly passes through the first coating chamber (14) and the second coating chamber (22);
the first film plating assembly comprises a first frame body (10), an annular frame (11), a plurality of air inlet pipes (12) and a plurality of first nozzles (13); the middle part of the first frame body (10) is provided with a first coating chamber (14) penetrating through two sides of the first frame body (10), and two ends of the first coating chamber (14) are suitable for being connected with a medium boron glass tube in a sealing way; an annular chamber (15) is further arranged in the first frame body (10), an annular groove is further formed between the annular chamber (15) and the first coating chamber (14), and the annular groove is communicated with the annular chamber (15); the annular frame (11) penetrates through the annular groove and is in rotary sealing connection with the first frame body (10), a sealing cavity is formed between the annular frame (11) and the annular cavity (15), and a plurality of first nozzles (13) are arranged on the annular frame (11) and are communicated with the sealing cavity; a plurality of baffles (16) are arranged on the upper circumference of the annular frame (11), a plurality of baffles (16) are arranged in the sealing cavity, a plurality of first air inlet pipes (12) penetrate through the first frame body (10) at the uniform ends and are communicated with the annular cavity (15), and the annular frame is suitable for introducing gas into the sealing cavity, blowing the baffles (16) and driving the annular frame (11) to rotate relative to the first frame body (10).
2. The on-line coating process of the medium boron glass tube according to claim 1, wherein a step B is arranged between the step A and the step C, monosilane, ethylene and nitrogen are conveyed to a first mixing chamber for mixing, and oxygen, helium and nitrogen are conveyed to a second mixing chamber for mixing.
3. The on-line coating process for the medium boron glass tube according to claim 1, wherein in the steps A to E, the movement speed of the medium boron glass tube is 100m/min to 800m/min.
4. The on-line coating process of the medium boron glass tube according to claim 3, wherein in the step C, when the movement speed of the medium boron glass tube is 100-800 m/min, the total flow of the mixed gas is 6-60 slpm, wherein the thickness of the silicon dioxide hard film is 20-1000 nm, and the total flow of nitrogen is 3-30 slpm, helium is 2-30 slpm, oxygen is 0.05-0.1 slpm, silane is 0.01-0.1 slpm, ethylene is 1-10 slpm; the pressure of the mixed gas is 0.05-0.2 MPa during film plating.
5. The on-line coating process of the medium boron glass tube according to claim 4, wherein when the movement speed of the medium boron glass tube is 100m/min, the total flow rate of the mixed gas is 6.56-9.2 slpm, wherein the thickness of the silicon dioxide hard film is 20nm, and the total flow rate of the mixed gas is 3-5 slpm, 2.5-3 slpm, 0.05-0.08 slpm, 0.01-0.02 slpm, 1-1.1 slpm and 1-1 slpm; the pressure of the mixed gas is 0.05-0.2 MPa during film plating.
6. The on-line coating process for the medium boron glass tube according to claim 3, wherein in the step E, the total flow rate of the mixed liquid is 4.3L/h, and the ratio of Tween 80 to water is 1:25, the output pressure of the spraying pump is 0.04-0.08 MPa.
7. The on-line coating process of the medium boron glass tube according to claim 6, wherein in the step C, exhaust gas generated by coating is led out by a fan and then diluted and combusted; in the step E, the waste gas generated after spraying is pumped out by a waste gas fan for treatment.
8. The on-line coating process for the medium boron glass tube according to claim 1, wherein the second coating assembly comprises a second frame body (20) and a plurality of second nozzles (21), the middle part of the second frame body (20) is provided with second coating chambers (22) penetrating through two sides of the second frame body (20), two ends of each second coating chamber (22) are suitable for being in sealing connection with the medium boron glass tube, and the second nozzles (21) are arranged in the second coating chambers (22) and are connected with the second frame body (20); the traction assembly comprises a traction roller (31) and a plurality of carrier rollers (32), wherein the traction roller (31) is arranged between the first coating assembly and the second coating assembly, and the carrier rollers (32) are arranged on one side, far away from the traction roller (31) and one side, of the first coating assembly and on one side, far away from the traction roller (31), of the second coating assembly.
CN202210753651.2A 2022-06-28 2022-06-28 Online coating process and device for medium boron glass tube Active CN115043600B (en)

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CN102057461A (en) * 2008-06-09 2011-05-11 松下电器产业株式会社 Glass tube for fluorescent lamp, fluorescent lamp, and lighting system
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