SU1623694A2 - Pressure filter for purification of liquid - Google Patents

Abstract

The invention relates to pressure filters for cleaning liquids and improves regeneration efficiency. The filter includes a housing 1, a drainage system, in the form of a perforated partition 2 and caps 3, a granular zergrueck 4, and a filter element 5 in the form of stacks 6 with external grids 7 placed over loading Coaxially with cups 6 cone-shaped guides 11 are reinforced with a gap, the inner surface of which is provided with an eddy in the form of shovels. At the moment of washing the loading grain with an upward flow liquid liquid change the direction of their movement upward towards the grids 7 by means of guides 11 and acquire rotational movement of the blades. Next, the loading grains rotate up and down around the grid 7 upward, intensively rubbing its surface from the sediment. s about o in)

Description

The invention relates to the purification of liquids from mechanical impurities, can be used in the production of water supply and chemical technology, and is an improvement of the known device (described in ed. St. No. 1031457.

The purpose of the invention is to increase the efficiency of grid regeneration.

FIG. 1 shows a schematic of an offer filter; figure 2 - node I in figure 1; in Fig. 3, the settlement A-A in Fig. 2.

The pressure filter for cleaning the fluid contains a building with 1, a drainage-distribution system in the form of a perforated bulkhead 2 and caps 3, a granular load 4 and a filter element 5 for pre-cleaning.

Zernist loading 4 is located on the drainage-distribution system.

The filter element 5 is made in the form attached to the lid of the housing 1 and 4 cups 6 partially immersed in the granular load with external nets 7. placed above the load. Glasses 6 have holes 8 above the load and 9 at the bottom of the bottom

Coaxially with glasses 6 in the lower part of the grids 7 are reinforced with a gap of 10 cone-shaped guides 11. The internal air guides of the guides 1 1 are provided with swirls gel in the form of blades 12. The broadened part of the guides 11 is placed in their pinned part (pointing down).

The guide rails 1 1 are attached to the yoke 13 set1 7 using radial rods U

A cap 15 is fastened to a pipe 15 for supplying the source liquid with dispensing gels 16 and a pipe 17 for removing the washing liquid, and in the lower part of the body a pipe 18 is fixed to remove the cleaned liquid from the pipe 19 for washing liquid

The pressure head works as follows.

ShchPM 0 & pd30M

After cleaning, the liquid enters the tubes 15 into the housing 1 and spreads in the radial tubes through the fiber 16, after which it is filtered through the granular load 4 and cleaned out through the drain caps 3, the holes in the perforated partition 2 and the socket 18 of the drain a certain amount of warring, which depends on the filtering speed and the processing of contaminants in the original liquid on the surface of the granular layer 4, a layer of retained i is formed. whose "grief is compacted} by the filtration process. In addition, intensive clogging of the upper layer of the load 4, contaminants contained in the initial fluid, and a decrease in its porosity occur.

All this leads to a significant increase in the hydraulic resistance of the granular load, which exceeds the resistance of the grid 7.

In connection with this, a large part of the initial liquid begins to be filtered through the mesh surface. The partially cleaned liquid enters the inside of the glasses b, leaves them through the holes 9, is additionally filtered through the lower layers of the load 4, passes through the caps 3 and is brought out through the nozzle 18. The sufficiently large mesh surface of the glasses 6 exceeding the surface area of the granular load 4 provides a relatively slow filtering speed through the grid 7.

After the end of the filter cycle, which occurs with full silting of the granular layer (rulers 4 and grids 7 and the maximum decrease in the filtration rate, the regeneration of load 4 and grids 7 is regenerated.

For this purpose, the nozzles 15 and 18 are closed and the nozzles 17 and 19 are opened. The washing liquid enters through the nozzle 19 and passes under pressure through the granular load 4. loosens it, removes the retained soils and brings them out of the filter through the holes 16 and the nozzle 17.

An upward flow of washing fluid moving at high speed causes the granular load 4 to become suspended.

At the same time, a significant part of the loading grains, lifting, by the guides 1 1, change their trajectory of movement towards the net 7 while simultaneously twisting the blades 12

The loading grains move up in a spiral around the grid 7 and intensively scrub it from the sediment. The contaminants are carried by the flow of wash liquid outside the filter through the nozzle 17. After the end of the washing, the nozzles 17 and 19 are closed, and the nozzles 15 and 18 are opened and the liquid is again filtered through the granular load 4 and the grid 7

Claims (1)

Invention Formula Pressure filter for cleaning fluid according to av. No 10 ° 1457, characterized in that in order to increase regeneration efficiency, it is provided with reinforced with a gap in the lower part of the outer grids coaxially with glasses, cone-shaped guides with vortexes in the form of blades placed on internal surfaces of these guides. L X / 1