The utility model discloses a high-precision pulse back-blowing
silicon powder filtering device. The device comprises a filter shell, a back-blowing
assembly, a filtering
assembly and an ash discharging device, and a back-blowing pipeline central gas distribution structure is adopted, so that the back-blowing effect is enhanced, and the service life of equipment is prolonged. And the shell is additionally provided with a purging opening, and the outer wall surface is additionally provided with a bin wall vibrator, so that the
powder flowability is improved, the
silicon powder is prevented from being stacked and bridged, and the
silicon powder is ensured to be discharged smoothly. The
filter element and the pattern plate are both of a double-end fixing structure, the
structural stability is effectively guaranteed, and
filter element damage and sealing failure caused by
impact vibration of blowback
airflow are prevented. A high-precision sintered
metal filter element is adopted as a filter element, reduction
tail gas, emptying
tail gas or replacement gas is purified, it is guaranteed that no other impurities are introduced, and the product discharging quality is guaranteed. Intercepted silicon powder particles can still be recycled as
system byproducts, and the good expectation of reducing cost and improving efficiency is achieved.