RU1797946C - Cartridge filter - Google Patents

Abstract

The invention relates to the purification of suspension of liquids from solids by filtration and can be used in various industries. The cartridge filter contains a cylindrical body with nozzles for supplying the suspension and removal of the filtrate 5, filter elements vertically mounted in the cavity cavity. The latter are connected to the pipes located in the lower part of the housing along parallel chords. The latter are connected through a stop valve with a prefabricated manifold. Each nozzle is made with a dividing wall installed in its middle part. To ensure the efficiency of the filtrate regeneration, adjacent nozzles are located at a distance equal to 1.3 times the diameter of the filter element. In this case, the step between adjacent filter elements on each pipe is equal to 1.8 diameters of the filter element. 2 ill. ate

Description

The invention relates to a technique for purifying liquids by filtration and can be used in various industries.

The goal is to increase operational properties.

In FIG. 1 shows a longitudinal section through a filter; in FIG. 2 is a section AA in FIG. 1,

The cartridge filter contains a vertical cylindrical body-1, made integral with the cover, a conical bottom 2, a suspension supply pipe 3, tangentially connected to the housing 1, a sediment discharge pipe 4 and a filtrate discharge pipe 5.

In the cavity of the housing 1, filter cartridges 6 are vertically mounted made of cermet, in communication with the nozzles 7 located at the bottom of the cylindrical part of the housing 1 along parallel chords. An annular prefabricated manifold 8 is mounted on the outer side of the housing 1, to which are connected through the shutoff valves 9 of the nozzle 7. The shutoff valves can be selected from the known. In each nozzle 7, a partition 10 is installed in the middle, dividing the nozzle 7 into autonomous sections, 11.

The filter cartridges b are mounted on the nozzle 7 with a step equal to 1.8 of the diameter of the filter cartridge 6.

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 ABOUT

The distance between the longitudinal axes of adjacent nozzles 7 is 1.3 times the diameter of the filter cartridge 6.

A fitting 12 is mounted on the collecting manifold 8. For supplying compressed air during the regeneration of the filter.

The cartridge filter operates as follows.

The initial suspension containing mechanical impurities is supplied under pressure to the housing 1 through the nozzle 3. The separated filtrate passes through the filter cartridges b to the nozzles 7 and then to the collection manifold 8, from which the filtrate 5 is removed from filter.

The sediment retained on the surface of the filter cartridges 6 is partially washed off with a swirling flow entering the suspension filter and entering the conical bottom 2.

After passing through the filter a predetermined dose, the filtrate, the active filtration cycle ends and filter regeneration begins. At the same time, the valve on the outlet pipe of the filtrate 5 closes - .c, and the valve on the fitting 12 for supplying compressed air opens. The incoming compressed air, displacing the filtrate from the filter cartridges 6 with a reverse flow, washes away the sediment that collects in the conical bottom from their outer surface. 2. After displacing the filtrate volume necessary for washing off the precipitate, the valve on the suspension supply pipe 3 closes and the valve on the sediment discharge pipe 4 opens, the accumulated sediment is displaced from the conical bottom for further processing and disposal. After this, the valves on the pipes 3. and 5 open, and the valve on the nozzle 12 and the valve on the branch pipe drain 4 are closed. The filtering cycle resumes.

Laboratory studies have found that the efficiency of the regeneration process is ensured when the adjacent nozzles 7 are located at a distance between their longitudinal axes of 1.3

the diameter of the filter cartridge 6, as well as when fixing the filter cartridges 6; on each of the nozzles 7 with a step equal to 1.8 of the diameter of the filter element,

When these distances are reduced, the space between the filter cartridges 6 is filled with solid sediment and the regeneration process is violated, which leads to the removal of the filter from the process.

With an increase in the indicated distances, the specific productivity of the filter decreases and, as a result, increases

metal and energy consumption.

In the case of mechanical destruction of one of the filter cartridges 6, it can be introduced from the process without stopping the equipment. At

this link containing the damaged filter cartridge 6 is blocked by shutoff valves 9 from the collecting ring collector 8. Due to the implementation in the middle part of the nozzles 7 of the separation

of the septum 10, the number of filter elements removed from the process is reduced without substantially reducing the useful filtration area.

FORMULA AND ZOBRETEN

A cartridge filter containing a cylindrical housing with nozzles for supplying suspension and filtrate, vertically mounted filter housings

cartridges mounted on nozzles located in the lower part of the housing along parallel chords, and a prefabricated collector connecting the nozzles, characterized in that, in order to increase operational properties, the filter is equipped with shutoff valves installed on the nozzles in front of the collector and partitions installed in the nozzles in the middle part and dividing them, the cavity into autonomous sections, while the distance between the longitudinal axes of adjacent nozzles is 1.3 times the diameter of the filter cartridge, and the pitch between the last L is 1,8 their diameter.