SU1223963A1 - Filter for purifying liquid - Google Patents

Description

The invention relates to filtration and can be used to clean cool cooling liquids used in metalworking in various industries.

The purpose of the invention is to increase the efficiency of the filter by forming a uniform layer on the filter septum of pre-enlarged particles of contaminants and removing extraneous oils.

FIG. 1 shows a filter for cleaning a fluid, longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. one.

The filter consists of a housing divided by a filter septum 2 into the chamber of the source liquid 3 and the chamber of the filtrate 4, which is connected via a pipe 5 with a pump for pumping the liquid. In the chamber 3 there is a scraper conveyor 6 with a drive 7, the lower branch of the conveyor lies on the filter, it has a partition 2, through which the ancillary filter pond material can be unwound from the roll 8.

Filter paper or cloth can be used as an auxiliary material.

The supply of the source fluid is carried out through the pipe 9, which communicates with the upper part of the device 10 for distribution of the liquid.

The liquid distribution device 10 is an inclined thin-layer sump with an upper liquid supply. Parallel partitions 11 are installed in the sump housing, inclined at an angle of 30-45 ° to the vertical. The partitions 11 have an obtuse angle upward in cross section and are provided in the upper part with catching pockets 12 with guide trays 13.

The ends of the trays 13 exit into the upper part of the body, which is an oil sump 14 and is separated from the rest of the body by a calming partition 15. A branch pipe 16 serves to drain the oil from the oil sump 14.

The sedative baffle 15 has openings for the communication of the oil sump 14 with the volume of the sump. These openings serve to return the liquid to the sump, trapped with the oil in the oil sump. The pipe 9 for supplying the source fluid is embedded in the switchgear 10 between the upper part of the inclined partitions 11 and the stilling part 15.

The lower part of the switchgear 10 is located above the section of the filter partition 2, which is cleaned when the conveyor 6 is moved to a predetermined rod, and has a cross section equal to the width of the fi lt partition 2 and the conveyor movement 6 of the conveyor 6.

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The oil pan 14 of the dispensing device 10 can be made in two versions.

In the first embodiment, the oil pan is closed at the top and is located below the level of the liquid in the chamber 3 of the filter. This achieves the necessary liquid overhead above the nozzle 16 and ensures that the oil is continuously removed from the oil sump 14.

In the second embodiment, the oil pan 14 is open at the top, and the upper edges of the walls of the oil pan 14 are located above the liquid level in the filter.

The filter works as follows.

The contaminated liquid through the pipe 9 enters the switchgear 10. The partitions 11 divide the liquid flow into thin parallel layers, due to which a more rapid settling of the liquid occurs.

Light foreign oils, present in the liquid, float upwards and along the underside of the bulkheads 11 rise to the oil catch pockets 12, from where they are drained to the oil pan 14. The oil from the oil pan 14 is drained through the pipe 16.

The removal of oil, depending on its quantity, can be carried out both periodically, as the sump is filled, and constantly.

The soothing partition 15, section 0, of the oil collector from the rest of the volume of the distributor 10, and eliminates the mixing of the separated oil with the fluid flow entering the distributor. The liquid trapped with the oil in the oil sump settles there and is removed from it through the openings in the partition 15.

Mechanical contaminants in the process of movement of the sediment from on the upper surfaces of the partitions 11 and together with the fluid flow move down to the outlet of the distributor 10. At the same time, particles of mechanical impurities coagulate with each other, become larger and evenly distributed over the clean area of the filter partitions 2, forming a coarse-grained filter layer on it, which has a good flow and filtering ability.

The lower section of the switchgear 10 has dimensions equal to the width of the non-filtering partition 2 and the step of movement of the conveyor 6, and is located above the section of the filtering partition. Most of the contaminant particles entering the source liquid concentrate and fall out in this area, due to which a layer of sludge quickly grows on it.

A pump connected to the outlet nozzle 5 creates a vacuum in the chamber of filtrate 4, the liquid passes through the filter 1, the partition 2 and the pump is pumped out

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catfish to the consumer. During filtration, the fluid passes both through the renewed section of the filter septum 2, on which the filtering layer of sludge leaks, and through the rest of the partition, on which the filtering layer of sludge was previously formed and moved by the conveyor during filter regeneration.

As filtering on the filter septum 2, a layer of contamination grows, and when the filtration resistance reaches a predetermined value, the drive 7 trans-A turns on

porter 6 and the latter is moved to a predetermined schag. In this case, the section of the partition 2, located under the distribution device 10, is cleared from the slime layer, or a clean section of filter material is fed under the distribution device.

After stopping the conveyor 6, the filtering cycle continues until the capacity of the filter layer again drops to a predetermined value.

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Claims (4)

1. FILTER FOR CLEANING A LIQUID comprising a housing divided by a filter baffle into the source fluid and filtrate chambers, a conveyor in contact with the filter baffle, an inlet for supplying the source fluid, and a device for distributing the liquid, characterized in that, in order to increase the efficiency of the filter by the formation on the filtering partition of a uniform layer of pre-aggregated particles of contaminants and the removal of foreign oils, a device for distributing liquid in is satisfied as a thin layer of the inclined clarifier from sump and nozzle for discharging the oil, with the upper part of the settling tank communicates with a pipe for supplying raw liquid, and the lower part is located on a filtering baffle, and has a cross section equal to the width of the filter septum. 2. Filter by π. 1, characterized in that it is equipped with a soothing partition separating the oil pan and the sump. 3. The filter according to paragraphs. 1 and 2, characterized in that the oil pan is closed from above and placed below the liquid level in the filter. 4. The filter according to paragraphs. 1 and 2, characterized in that the sump is made open at the top, while the upper edges of the walls of the sump are located above the liquid level in the filter. f77fCfHC / T0p ~ / 77e /? and fig.]>