SU560628A1 - Cartridge filter - Google Patents

Description

one

This invention relates to a technique for separating non-uniform liquid systems by filtration.

A filtering cartridge is known, containing a 1 case, inside which is placed a single-cavity filter cartridge with a drainage tube equipped with shut-off valves tll.

The disadvantage of the filter lies in the fact that when the additional filter is left at the end of the chisel in the suspension cartridge supplied by compressed air to the housing, part of the suspension remains in the housing unfiltered due to the breakthrough of compressed air into the drainage tube to be flushed when the filter is flushed.

The purpose of the invention is to increase the performance of the cartridge filter by reducing the loss of fluid discharged from the filter housing.

For this purpose, in the lower part of the body, below the filter cartridge, a chamber for additional filtration of the suspension is installed, equipped with a separate drainage tube with a closure element.

The drawing is a diagram of the cartridge filter.

The cylindrical filter includes a housing 1 with a bottom 2 and an outlet nozzle 3 G with a crane, a filter cartridge 4 with a drainage tube 5. Below the cartridge 4 a filter chamber 6 is placed, separated from the upper cartridge by an impenetrable partition 7. An additional drainage tube 8 is removed from the lower chamber. suspensions serve as a faucet 9 p for supplying compressed air faucet 10. Kf. drainage tubes installed taps 11 for draining the filtrate and taps 12 for supplying compressed air.

1ltr works as follows. The suspension is fed under pressure into the housing 1 and (through the walls of the cartridge 4 and the chamber 6). The strain through the drainage tubes 5 and 8 (or only through one tube 5) goes into the collection.

At the end of the filtering process, the supply of the suspension to the housing is stopped and the remaining suspension is filtered out. For this purpose, the valve 9 is closed. and one of the cranes of 10 or 12 pi dacha opens

compressed air (valve 12 can only be opened when the valve 11 is closed on the drainage tube). With the faucet 10 open, the filtrate is squeezed out by compressed air through open drainage pipes 5 and 8 up to

until the moment of breakthrough of compressed air into the tube 5, then the drainage tube 5 is blocked by the crane 11 and the filtrate is removed only from the chamber 6 through the open drainage tube 8. All the remaining suspension is filtered out, thus the filter efficiency increases.

Cleaning the filter walls of the cartridge is performed by conventional methods, in particular by blowing air through the drainage tubes with the taps 12 open and the taps 11, 10 and 9 closed. The residue after cleaning is discharged through the outlet 3

The presence of an additional filtering chamber, from which the additional drainage tube is removed, makes it possible to increase the effect of after filtration of the suspension contained in the cartridge filter housing, and thus reduce the dead volume of liquid discharged from the filter housing along with the sediment.

This reduces the waste of the filtered suspension and the liquid used to flush out the precipitate, and reduces the volume and humidity of the sludge removed from the filter housing.

rete n i

p y

A cartridge hachtr comprising a housing within which the filtering of the cartridge from the drainage tube is provided with a stop valve, characterized in that, in order to reduce the loss of living space discharged from the filter housing, in the bottom of the filter cartridge there is a chamber for filtering the suspension, fitted with drainage tube with closures.

Sources of information taken into account in the examination:

1. Malinovsky, T. A. Separation of suspensions in the industry of organic synthesis, M., Himi, 1971, p. 127-132