Photovoltaic glass anti-reflection strengthening continuous production device and method

Abstract

The invention discloses a photovoltaic glass anti-reflection strengthening continuous production device which comprises a glass feeding roller way, a film-plating machine, a drying chamber, a heatingfurnace and an air grid which are arranged in sequence, and a glass discharging roller way is arranged below the film-plating machine; an upper-layer roller way and a lower-layer roller way which aredistributed up and down are arranged in the drying chamber, the production device further comprises a glass return channel arranged below the heating furnace, and a glass return roller way, a first lifting roller way and a second lifting roller way are arranged in the glass return channel; the glass feeding roller way, the film-plating machine, the upper-layer roller way, the heating furnace and the air grid are adopted to form a glass forward transmission line; the second lifting roller way, the glass return roller way, the first lifting roller way, the lower-layer roller way and a glass discharge roller way are adopted to form a glass reverse transmission line. According to the above production device, photovoltaic glass is directly conveyed to the lower-layer roller way of the drying chamber through the glass return channel after quenching at the air grid, a next piece of photovoltaic glass is dried by using residual heat, the anti-reflection and strengthening procedures are continuous while consumption is reduced and energy is saved, and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic glass production, in particular to a continuous production device and method for antireflection and strengthening of photovoltaic glass. Background technique [0002] Photovoltaic glass is a special glass that is laminated into solar cells, can generate electricity by solar radiation, and has related current extraction devices and cables. With the requirements of energy saving and environmental protection, photovoltaic glass has also been widely used. [0003] Photovoltaic glass needs to go through two processes of anti-reflection and strengthening during the manufacture. When anti-reflection, first coat a layer of liquid anti-reflection film on the surface of photovoltaic glass, and then send it to the drying room and heat it to 150-200°C to make the wet film Drying and solidification on the glass surface; followed by strengthening, the glass is first sent to a heating furnace to be heated ...

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Problems solved by technology

[0004] The disadvantages of the existing process are: during coating, the wet film drying and curing process consumes a lot of energy, and the drying room occupies a certain workshop area, and because the drying and heating furnaces are not continuously set up, the glass is already heated before entering the heating furnace. After cooling to room temperature, the heating furnace needs to consume electric energy and time to heat the glass from room temperature to 620°C; secondly, during strengthening, the glass is quenched by strong wind from 620°C to about 550°C in the high-pressure section of the air grid, and the strengthening stress is already After forming, it enters the middle and low pressure section of the air grid to lower the photovoltaic glass from 550°C to room temperature, just to increase the cooling speed, increase the output, and facilitate unloading. The glass at 550°C still contains a lot of heat energy and is forced to cool by the air grid At room temperature, the heat energy cannot be used and is lost to the air. At the same time, the air grille consumes a lot of additional electric energy, and the medium and low voltage section of the air grille also occupies a certain workshop area.

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