Filtration aiding feeder on horizontal spiral discharge screen centrifuge

Abstract

The invention discloses a filtration aiding feeder on a horizontal spiral discharge screen centrifuge. The centrifuge comprises a shell, a spindle arranged in the shell and a rotary drum sheathed on the spindle, wherein the filtration aiding feeder is arranged on the feeding end of the rotary drum, the filtration aiding feeder comprises a feeding pipe inserted in the shell and a feed screw arranged on the discharge end of the feeding pipe, the feed screw comprises a feeding spiral pipe provided with an inner chamber, a rotating shaft inserted into the feeding spiral pipe and a spiral blade fixedly arranged on the rotating shaft and distributed along the axial direction of the rotating shaft, the front end of the feeding spiral pipe is inserted into the inner chamber of the rotary drum, a feed inlet communicated with the inner chamber of the feeding pipe is formed in the upper pipe wall of the feeding spiral pipe, the filtration aiding feeder further comprises a primary filter device arranged on the inner side of the lower pipe wall of the feeding spiral pipe, and the primary filter device comprises a primary filter screen arranged under the rotating shaft. The filtration aiding feeder has the advantages of simple structure and capabilities of greatly reducing the liquid content of materials entering the rotary drum and greatly improving the solid-liquid separation capacity of the rotary drum.

Description

technical field [0001] The invention relates to the field of discharge centrifuges, in particular to a filter aid feeder on a horizontal screw discharge filter centrifuge. Background technique [0002] As a solid-liquid separation equipment, the screw discharge filter centrifuge is widely used in chemical industry, coal, food and other industries. The working principle of the screw discharge filter centrifuge is: the material enters the high-speed rotating drum through the feed pipe, the liquid is thrown into the casing through the screen on the drum and discharged, and the solid phase material trapped on the screen is pushed by the screw. Under the action of the feeder, the drum is gradually pushed out, and the liquid is continuously removed during the advancing process. The feeding method under normal conditions is to enter the drum through the elbow (see figure 1 As shown), when some material particles are large and the proportion of liquid is too high, when it enters...

AI Technical Summary

Problems solved by technology

The feeding method under normal conditions is to enter the drum through the elbow (see figure 1 As shown), when some material particles are large and the proportion of liquid is too high, when it enters the centrifuge drum through the feed pipe, the screen on the inner wall of the drum has no time to remove the liquid, which will cause the separated solid phase moisture content Too high, can not meet the requirements, so that the centrifuge can not be used normally

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