Channel for rotary extruding-type filter

Abstract

The invention provides a channel for a rotary extruding-type filter, and the channel provided by the invention is a C-shaped channel consisting of an inner wall [A] on an outer partition board [1], an outer wall [B] on an inner partition board [2] and a filter screen; the cross section of the channel is rectangular; the upper end of the channel is connected with a feed port through a feeding section; the lower end of the channel is connected with a discharging port through a discharging section; a flashboard [4] is arranged at the discharging port; and the radial side length of the rectangular cross section is gradually reduced from the feeding section to the discharging section. In the channel for the rotary extruding-type filter provided by the invention, the radial side length of the rectangular cross section is gradually reduced from the feeding section to the discharging section so that the cross section of the channel is matched with the reduction of the volume flow rate of materials. Compared with the prior art, the channel can be used for improving the uniformity of the compression ratio of the materials at each part of the channel, thereby improving the filtering efficiency of the filter; and simultaneously, the gradually reduced channel also provides an extruding force for the materials; therefore, the defect that the extruding force for the materials is provided only by the flashboard is changed so that the service life of the device is improved.

Description

technical field [0001] The invention relates to a channel of a rotary extruding filter, which belongs to the technical field of filters with rotating flat filter surfaces separated during operation. Background technique [0002] The rotary extrusion filter has a rectangular cross-section that forms a C-shaped channel around the rotating shaft. The two sides of the channel are filter screens connected to the rotating shaft. The upper end of the channel passes through the feed section to the feed port, and the lower end passes through the discharge section to the discharge The discharge section is equipped with a gate that exerts resistance to the filter cake to control the liquid content of the filter cake. Sludge or similar solid-liquid mixture with tiny solid particles enters the channel from the material inlet, and the material gradually moves to the outlet through the filter screens on both sides. During this period, the material changes from thin to thick in the channel...

AI Technical Summary

Problems solved by technology

"This kind of structure that configures protrusions in the "second half of the filter chamber to the front half of the filter cake passage" of the rotary squeeze filter, although it improves the efficiency of some filters compared to the way that the gate is used to increase the discharge resistance. Extrusion efficiency, but there is still the deficiency that the extrusion effect is mainly produced at the last part of the channel

Images