Automatic sand coating equipment and automatic sand coating system

Abstract

The invention discloses automatic sand coating equipment and an automatic sand coating system of an effective quartz crucible for polycrystalline silicon ingot casting, and belong to the technical scheme for the field of polycrystalline silicon ingot casting, both comprise shakeout splint devices, driving devices, sand rollers and sand discharging accesses; the shakeout splint devices are provided with accommodation cavities, sand producing openings are arranged in the bottoms of the shakeout splint devices, the sand producing openings are in guiding communication with the accommodation cavities; the sand rollers are arranged under the shakeout splint devices, roller surfaces of the sand rollers are opposite to the sand producing openings, sand producing gaps are left between the roller surfaces of the sand rollers and the sand producing openings; the driving devices are connected with rotary centers of the sand rollers, the sand discharging accesses are arranged under the sand rollers, top parts of the sand discharging accesses are sand receiving openings, the sand receiving openings are used for receiving sand material discharged from the sand rollers, lower parts of the sand discharging accesses are material discharging openings, each of the sand discharging accesses comprises at least one baffle plate, the baffle plate is used for rebounding the sand material to the material discharging openings to be discharged; in summary, the invention has the advantage that automatic, effective and uniform sand coating can be realized by enabling the sand material to be sputtered uniformly into a crucible.

Description

technical field [0001] The invention relates to a sand planting device and a sand planting system, in particular to an automatic sand planting device and an automatic sand planting system. Background technique [0002] Seed crystal seeding promotes non-spontaneous nucleation of polysilicon ingots, thereby improving the size of polysilicon ingot crystal flowers, reducing dislocation density and defects, and improving terminal conversion efficiency. It is considered to be the most effective high-efficiency ingot casting technology at present. High-efficiency sand planting technology has been proven to be a crucible technology that can effectively improve the quality of polysilicon ingots. The most commonly used seeding materials for high-efficiency crucibles are generally high-purity particles such as quartz sand, silicon material, and silicon carbide. One of the most critical technical parameters for the industrialization of sand planting technology has a direct impact on the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic sand planting equipment to solve the problem of poor sand planting effect in the prior art

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