A double vacuum disc filter

Abstract

The invention relates to the technical field of solid-liquid separation equipment, in particular to a novel double-vacuum disc filter. It enables the equipment to respond to the fluctuation of the incoming pulp concentration more quickly, and more efficiently guarantee the moisture content of the filter cake and the processing capacity of the equipment. Including new distribution head, bearing seat, main drive system, main shaft, tank body, adjustable scraper guide wheel, stirring device, filter plate device. The stirring device is arranged in the tank body, the main shaft is arranged above the tank body, and the stirring device is parallel to the main shaft; the new distribution head is arranged on the outside of the bearing seat close to the main transmission system, and the filter plate device Set on the main shaft, adjustable scraper guide wheels are set on both sides of the filter plate device, the tank body is set with ore discharge tank, overflow port and discharge port, the stirring device is equipped with stirring blades, installed In the gap between the two filter plate devices.

Description

technical field [0001] The invention relates to the technical field of solid-liquid separation equipment, in particular to a double-vacuum disc filter. Background technique [0002] Disc vacuum filter is a kind of solid-liquid separation equipment, which is widely used in mineral processing plants, coal washing plants, thermal power plants, chemical industry and environmental protection industries. The equipment uses vacuum force as the driving force to separate the slurry from solid to liquid. The existing disc vacuum filter has a filtration area of ​​40㎡~200㎡. When it is used for iron concentrate dehydration, the equipment is sensitive to the fluctuation of the incoming pulp concentration. The processing capacity of the disc vacuum filter and the moisture content of the filter cake, It cannot be adjusted in time when the concentration of the incoming pulp changes. The existing equipment can only be adjusted by changing the spindle speed. When the feed concentration is high...

AI Technical Summary

Problems solved by technology

The existing disc vacuum filter has a filtration area of ​​40㎡~200㎡. When it is used for iron concentrate dehydration, the equipment is sensitive to the fluctuation of the incoming pulp concentration. The processing capacity of the disc vacuum filter and the moisture content of the filter cake, It cannot be adjusted in time when the concentration of the incoming pulp changes. The existing equipment can only be adjusted by changing the spindle speed. When the feed concentration is high, the filter plate device is immersed in the pulp, and when the filter cake is formed in the adsorption area, the filter cake is prone to appear. If the thickness is too thick, in this case, the main shaft speed is generally increased to shorten the time of the filter plate device in the slurry adsorption area, but the time of the main shaft speed is increased, and the time for the filter plate device to go from the filter cake dehydration area to the back blowing mine area is shortened. It will also be shortened accordingly, and the thickness of the filter cake may become thinner in time, and the moisture content of the filter cake is still high.

On the contrary, when the pulp concentration in the tank is low, the spindle speed is usually reduced, so that the filter plate device can stay in the pulp adsorption area as much as possible to ensure the thickness of the filter cake, but the slow spindle speed will easily lead to the situation that the output does not meet the standard; When blowing and unloading the mining area, the filter cloth is in a bulging state due to the back blowing of the fan, and it will take a long time to discharge the gas through the filter cloth itself into a shrinking state, which is prone to scraping between the filter cloth and the adjustable scraper guide wheel. Wiping will eventually lead to damage to the filter cloth and even the filter plate device; in addition, when the disc vacuum filter handles fine-grained materials, the filter cloth is easy to clog and has a short service life, so the filter cloth needs to be replaced frequently

During the long-term use and frequent assembly and disassembly of the filter plate device, there will be some deformation, and the filter plate will be deflected. Equipment damage

Images