A kind of cleaning device and cleaning method for bad screen printing film

Abstract

The invention discloses a cleaning apparatus and a cleaning method for unqualified battery pieces produced in silk-screen printing. A first solution circulation apparatus (29) comprises a first sedimentation tank (35), a second sedimentation tank (36), a third sedimentation tank (37) and a first mixing apparatus (38) from front to back in sequence, wherein a first liquid outlet (26) is connected with the inlet of the first sedimentation tank (35); a liquid inlet (39) is formed above the first sedimentation tank; a hook-shaped stirring apparatus is arranged in each of the first sedimentation tank (35), the second sedimentation tank (36) and the third sedimentation tank (37) separately; and a filtering net (40) used for filtering flocculent sediments is arranged in the outlet of each of the first sedimentation tank (35), the second sedimentation tank (36) and the third sedimentation tank (37) separately. The cleaning apparatus and the cleaning method have the beneficial effects that due to the first solution circulation apparatus and a second solution circulation apparatus, aluminum-containing floccules and silver sediments can be filtered in the circulation process through solution circulation; and then a certain amount of solute is supplemented for realizing cyclic utilization of the solution.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a device for cleaning bad screen printing sheets and a cleaning method thereof. Background technique [0002] The back electric field and back electrode of crystalline silicon solar energy are located on the back of the solar cell, forming the back and lower electrodes of the silicon cell. Cooperating with the upper electrode on the surface of the silicon cell, it plays the role of transmitting the electric energy generated by the silicon solar cell to the outside world. The positive electrode and the back electrode are made of silver paste, and the back electrode is made of aluminum paste through printing, drying, and sintering. [0003] In the normal production process of cell screen printing, there are often some defective screen printing products caused by abnormal printing. These defective products mainly include incomplete graphics on the front, incomplete graphics on the back, and...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems of low cleaning efficiency, poor effect, and unfavorable industrial production needs in the manual cleaning of defective screen printing sheets existing in the prior art, the present invention provides a cleaning production line for defective screen printing sheets, from front to back It includes a feeding device, a soaking device, a front flushing device, a reverse flushing device, a drying device and a discharging device in turn, and the feeding device, the soaking device, the front flushing device, the reverse flushing device, the drying device and the discharging device A conveying device is used to connect between them. The bottom of the soaking device is provided with a first liquid outlet, the top is provided with a first gas outlet, the side is provided with a first liquid inlet, and the first liquid outlet is provided with a first solution. Circulation device, the outlet of the first solution circulation device is connected to the first liquid inlet, the front flushing device and the back flushing device are provided with a water storage tank, and the side of the storage tank is provided with a second liquid outlet , the top is provided with a second air outlet, the side is provided with a second liquid inlet, the second liquid outlet is provided with a second solution circulation device, the outlet of the second solution circulation device is connected to the second liquid inlet connected

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