Automatic slurry filter device

Abstract

The invention discloses an automatic slurry filter device which comprises a material receiving bracket and an extruder, wherein the extruder comprises a cylinder body which is hollow at the bottom, and an extrusion piston mounted in the cylinder body; a filter screen is arranged at a hollow part of the bottom of the cylinder body; a slurry feeding pipeline which is straight through the bottom is arranged in the center of the extrusion piston; a push rod matched with the pipeline is arranged in the pipeline; a telescopic rod is connected on the push rod, and connected with a motor; the motor drives the telescopic rod to drive the push rod to move; a conveying belt is arranged at the bottom of the material receiving bracket, and stretches to the outsides of the two ends; a hollow structure is arranged in the middle of the material receiving bracket; a material receiving box is mounted on the conveying belt at a hole matched with the hollow part of the bottom of the cylinder body at the upper part of the material receiving bracket; and the detachable filter screen is mounted at a material receiving opening at the upper part of the material receiving box. The filter device is simple and convenient to operate, can save the production time and the manpower, greatly improves the production efficiency, and lowers the production cost.

Description

technical field [0001] The invention belongs to the field of solar cell manufacturing, and in particular relates to an automatic slurry filtering device. Background technique [0002] The solar cell screen printing process uses screen printing technology to print silver (aluminum) paste on the surface of the silicon wafer through the screen. If the paste is contaminated during use, solid foreign matter larger than the mesh is introduced, which will affect the printing. The effect will also greatly reduce the service life of the screen plate. At the same time, the slurry is expensive and cannot be easily discarded. Therefore, filtering the slurry contaminated by solid foreign matter is a problem that every solar cell manufacturer must face. At present, the slurry is filtered by smearing back and forth on the blank screen with a spatula. The filtration efficiency is low, the plate is easy to break, and the organic components of the slurry are easy to volatilize. Contents of...

AI Technical Summary

Problems solved by technology

[0002] The solar cell screen printing process uses screen printing technology to print silver (aluminum) paste on the surface of the silicon wafer through the screen. If the paste is contaminated during use, solid foreign matter larger than the mesh is introduced, which will affect the printing. The effect will also greatly reduce the service life of the screen plate

At the same time, the slurry is expensive and cannot be easily discarded. Therefore, it is a problem that every solar cell manufacturer must face to filter the slurry contaminated by solid foreign matter.

At present, the slurry is filtered by smearing back and forth on the blank screen with a spatula. The filtration efficiency is low, the plate is easy to be broken, and the organic components of the slurry are easy to volatilize.

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