A vacuum drying device and method for a panel substrate after cleaning, the device comprising a pre-dehydration system and a vacuum drying system. A transfer conveying device is arranged between the pre-dehydration system and the vacuum drying system and is used for connecting the pre-dehydration system and the vacuum drying system in series and conveying a product to be dried; the pre-dehydration system comprises a water tank, a circulating pump and a heater, wherein the water tank is connected to the heater, which is arranged externally, by means of the circulating pump and is used for adjusting the temperature of the water in the water tank; and the vacuum drying system comprises a static charge eliminating device, a drying chamber, a nitrogen gas source, a heating cavity, a condenser, a temperature controller, an infrared heater and a vacuum pump, wherein the nitrogen gas source is heated by means of the heating cavity, then is led into the static charge eliminating device and then is sent into an air inlet of the vacuum pump, the infrared heater is arranged in the drying chamber, one end of the condenser is connected to an air outlet of the drying chamber, the other end of the condenser is connected to the vacuum pump, and the infrared heater and the condenser are both connected to the temperature controller to adjust the chamber temperature of the drying chamber.
F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
F26B 21/14 - Arrangements for supplying or controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam
F26B 1/00 - Preliminary treatment of solid materials or objects to facilitate drying
B08B 3/04 - Cleaning involving contact with liquid
A vacuum drying apparatus and a vacuum drying method. The method comprises: immersing a processed product into pure water of 55-95°C for cleaning and preheating; slowly separating the processed product from the pure water, and transferring the processed product to a drying chamber; continuously introducing hot nitrogen to the drying chamber for initial drying; stopping introducing the hot nitrogen and continuously performing vacuumizing to further dry the processed product; continuously introducing hot nitrogen in which static charges are eliminated, so as to break a vacuum of the drying chamber and completely dry the processed product; and transferring the product out of the drying chamber. The method eliminates the use of a drying solvent, can reduce use terminal operating costs, has no deflagration risk, and has higher drying efficiency and stronger applicability.
F26B 5/04 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
An ultra-high pressure cleaning device, comprising: a supply pipe (1); a gas-liquid membrane tube (2), two liquid-passage ends of the gas-liquid membrane tube (2) being connected to different parts of the supply pipe (1), the gas-liquid membrane tube (2) also having a gas-passage end, and the gas-passage end being connected to a carbon dioxide tube (7); a plunger pump (3), the plunger pump (3) being connected to an outlet of the supply pipe (1), and the plunger pump (3) being driven by a motor (4); filter cylinders (5), the filter cylinders (5) being connected to an outlet of the plunger pump (3); and a discharge pipe (6), the discharge pipe (6) being connected to a liquid outlet of the filter cylinders (5), such that dissolution of a metal wire or a thin film on a substrate surface due to electrostatic current is prevented.
A cleaning device, comprising: a feeding mechanism, a liquid supply mechanism, a filtering mechanism and a spraying mechanism; the feeding mechanism is configured to transport or fix objects to be cleaned, the liquid supply mechanism is configured to provide ultrahigh-pressure cleaning liquid to the filtering mechanism, and the filtering mechanism is configured to filter the cleaning liquid, so that the spraying mechanism can spray the filtered cleaning liquid to said objects on the feeding mechanism. The present invention can improve the cleaning effect of products.
A photovoltaic trough machine, comprising process troughs. Each process trough comprises: a trough body; an overflow enclosure, the overflow enclosure being provided in the trough body; an enclosure heightening plates, the enclosure heightening plates being selectively disposed on the upper edge of the overflow enclosure; an overflow and volume reduction box, the overflow and volume reduction box being selectively disposed on the inner side of the overflow enclosure, the overflow and volume reduction box comprising multiple side plates; and spray tubes, there being two sets of spray tubes having different sizes, and the two sets of spray tubes being provided in the trough in the alternative only.
H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components
B08B 3/04 - Cleaning involving contact with liquid
B08B 3/02 - Cleaning by the force of jets or sprays
6.
METHOD FOR COMPATIBILITY OF PHOTOVOLTAIC SLOT TYPE MACHINE WITH DIFFERENT PRODUCTS
A method for compatibility of a photovoltaic slot type machine with different products, comprising: providing two different in-slot liquid medicine accommodating spaces, two different spray pipe sizes, and two different overflow heights for a slot body of a process slot, wherein two spray pipes are provided in the slot body in an alternative mode.
A method and device for recovering silver and mixed acid from a silver-containing waste acid solution in photovoltaic waste liquid. The method comprises: adding a chlorine-containing solution into the silver-containing waste acid solution to precipitate silver chloride so as to remove silver ions in the waste acid solution; then, performing diffusion dialysis on the obtained residual liquid so as to obtain a mixed recovered acid solution; and finally, adjusting the concentration of the mixed recovered acid to be reused in a hole expanding process of black silicon production.
A device and method for multistage selective removal of heavy metal ions in a photovoltaic waste liquid. According to the device, a multistage metal adsorption mechanism is used for selectively adsorbing and removing heavy metal ions in a dialysate and cleaning liquid; according to the method, different metal ions are directionally adsorbed and removed by means of different types of resin adsorption columns arranged in each stage of the metal adsorption mechanism; after the adsorption reaches saturation, the surface of resin for adsorption is eluted by means of eluent, and metal ions are recycled.
A device and method for removing heavy metal ions in photovoltaic waste liquid, belonging to the technical field of waste liquid recovery and treatment. The device adopts different metal absorption mechanisms, each metal absorption mechanism selectively absorbs heavy metal ions in a dialysis solution and a cleaning solution, and finally, the heavy metal ions are removed and recovered.
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C02F 1/28 - Treatment of water, waste water, or sewage by sorption
C02F 101/20 - Heavy metals or heavy metal compounds
10.
DEVICE AND METHOD FOR RECYCLING WASTE ACID LIQUID FOR POLYCRYSTALLINE SILICON TEXTURING
A device and method for recycling a waste acid liquid for polycrystalline silicon texturing. A secondary chemical reaction precipitation section neutralizes hydrofluoric acid by means of a primary reaction, and a secondary reaction generates a fluorosilicate precipitate; rectification and purification may be performed on dilute nitric acid therein in a rectification and purification section to generate concentrated nitric acid; and in a dehydrating agent regeneration section, after a certain amount of magnesium oxide is added to a solution containing a small amount of dilute magnesium nitrate for neutralization, the remainder after evaporating same is high-concentration concentrated magnesium nitrate.
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