Constant volume type accurate automatic liquid replenishing device

An automatic rehydration device and fixed-volume technology, which is applied to the cleaning method of using liquid, sustainable manufacturing/processing, climate sustainability, etc., can solve the problems that the accuracy of rehydration is greatly affected by human factors and the amount of rehydration is inaccurate, etc. Achieve the effect of keeping the solution concentration stable, ensuring the cleaning quality and improving the use efficiency

Active Publication Date: 2011-08-10
EGING PHOTOVOLTAIC TECHNOLOGY CO LTD
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Problems solved by technology

Ordinary washing machines use manual addition method for rehydration, and manual addition has the defect of inaccurate rehydration volume, and human factors have a great influence on the accuracy of rehydration

Method used

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  • Constant volume type accurate automatic liquid replenishing device

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specific Embodiment approach

[0010] Described a kind of constant volume type precision automatic replenishment device, such as figure 1 As shown, it includes a liquid storage tank 1, a mechanical replenishment pump 2, a calibration tank 3, an upper liquid level sensor 4, a lower liquid level sensor 5, a float 6, a U-shaped float rod 7, a constant volume sensor 8, and a scale 9 , an electromagnetic reversing valve 10, a cleaning tank 11 and a control system 12. The liquid storage tank 1 is arranged next to the automatic silicon wafer cleaning machine, and the solution to be replenished is stored in the liquid storage tank 1, and a liquid filling opening is arranged on the top of the liquid storage tank 1 , for the operator to add solution to it, the mechanical replenishment pump 2 is set between the liquid storage tank 1 and the calibration tank 3, and the upper liquid level sensor 4 and the lower liquid level sensor 5 are arranged on the side wall of the calibration tank 3 , the liquid replenishment pipe ...

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Abstract

The invention discloses a constant volume type accurate automatic liquid replenishing device. The device comprises a liquid storage tank, a mechanical liquid replenishing pump, a sizing tank, an upper liquid level sensor, a lower liquid level sensor, a floating ball, a U-shaped floating ball rod, a constant volume sensor, a ruler, an electromagnetic directional valve, a cleaning groove and a control system, wherein the inner side wall of the sizing tank is provided with the upper liquid level sensor and the lower liquid level sensor; the primary liquid replenishing volume can be acquired through the diameter of the sizing tank and the drop distance of the floating ball; the drop distance of the floating ball is controlled by the constant volume sensor; the electromagnetic directional valve is opened during liquid replenishing; after the constant volume sensor drops for a predetermined distance, a signal is transmitted to the control system by the constant volume sensor and the electromagnetic directional valve is immediately closed, so that the liquid can be accurately replenished in the cleaning groove, the concentration of a solution in the cleaning groove is kept stable, and the cleaning quality of a silicon slice is substantially guaranteed.

Description

Technical field: [0001] The invention relates to a solar silicon chip cleaning device, in particular to a liquid replenishing device in a fully automatic cleaning device. Background technique: [0002] In the production process of solar cells, the cleaning process of silicon wafers is a very important process, and the cleaning quality directly affects the photoelectric conversion performance of solar cells. In the silicon wafer cleaning equipment, due to the chemical reaction between the silicon wafer and the cleaning solution, the relevant chemical components in the cleaning solution will be consumed. If it is not replenished in time, the cleaning effect of the silicon wafer will be directly affected. In order to improve the stability of the silicon wafer cleaning process, corresponding chemical liquid must be added to the cleaning solution after cleaning for a certain number of times. Ordinary washing machines use manual addition method for rehydration, and manual additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18B08B3/08
CPCY02P70/50
Inventor 刘志刚
Owner EGING PHOTOVOLTAIC TECHNOLOGY CO LTD
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