SU1680260A1 - Phase separation arrangement - Google Patents

Description

The invention relates to a device for cleaning liquid by the method of filtration and allows you to intensify the cleaning of the liquid from fine impurities. In the middle part of the body, tangentially one above the other, the inlet 8 and outlet 9 are located, with a common wall 10 for them, equipped with a strainer 11. The inlet 8 is recessed into the body and is located obliquely. In the upper part of the body there is an annular channel 14 of liquid overflow, made in the form of a pocket in which a cylindrical screen filter 15 is located. Along the body axis there is a plate 7 on which are fixed conical diaphragms 16 with visors 17 pointing downwards, one of the diaphragms is located above the inlet pipe, the rest - under it *. 1 hp f-ly, 3 ill.

Output

entrance

FIG. one

1680260 A1

and-

1680260

The invention relates to a device for cleaning liquid by the method of filtration and sludge and can be used as a means of protecting membranes in ultrafiltration plants for separating industrial effluents in the textile, chemical and other industries.

The purpose of the invention is the intensification of cleaning fluid from fine impurities.

FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 — section BB in FIG. one.

The device consists of a vertical cylindrical tank 1, closed with a figured lid 2 and a folding removable flat bottom 3, equipped with a snap device 4. The lid 2 has a pressure gauge 5 and a rubber nipple 6 with a valve to drain the light fraction, and welded to the lid 2 on the symmetry axis vertical flat plate 7. In the middle part and on the outer side of the container 1, tangentially, one above durgim, are the inlet 8 and the outlet 9 branch pipes with a common wall 10, made in the form of a flat filter 11, and parallel to rub on the outlet wall 9 is encased transparent viewing window 12.

The inlet 8 is buried in the tank, has a recessed part 13 in the case, which is inclined to the horizon at an angle of 10-13 °. Above the inlet pipe, inside the case, on its periphery is an annular channel 14 of liquid overflow, made in the form of a pocket in which walls, in the middle part of a cylindrical mesh filter 15, installed in front of the outlet pipe 9.

The ribs of the plate 7 with their smallest base are rigidly attached to an annular conical diaphragm 16. One of them is located above the nozzle 8, and the rest are below and are made with a constant gap between them. Moreover, the diaphragm 16 is equipped with cylindrical visors

17, located on the outer perimeter and directed downwards.

To drain the liquid from the sump in its lower part has a pipe

18, and to remove sludge from the bottom, the latter is removable. The zone of conical diaphragms is a zone of liquid settling in a thin layer, and above it is an additional zone of settling of small impurities.

The device works as follows.

Liquid with foreign inclusions enters under pressure into the nozzle 8. Part of the liquid (up to 25%) passes through a flat screen filter 11, installed parallel to the main flow, and enters the outlet nozzle 9, bypassing the capacity of the apparatus. The amount of fluid passing through the filter 11 is determined by the pressure difference between the nozzles 8 and 9. Since the velocity of the main tangential flow is higher than the filtration rate, the foreign inclusions appearing on the filter surface have minimal adhesion forces and are carried away by this flow, which contributes to the timely regeneration of the filter, t . its self-cleaning, which ensures a more efficient operation of the filter, as well as the remaining elements of the system by increasing the concentration of pollutants.

The main stream from the inlet 8 enters the conical diaphragm 16 and receives a forced helical motion. At this moment, due to the hydrodynamic resistance of the fluid from the side of the container 1 and the visor 17, forces arise that do not allow foreign inclusions to shift to the periphery of the body. Therefore, impurities are collected directly at the bottom 3, which is a collection of sludge. Due to the difference in the angular velocities of rotation of the fluid particles in height, a vortex flow occurs, which directs impurities to the center, and a cone-shaped slime is formed on the bottom 3. Moreover, the quick-release latching device 4 allows you to completely remove this sludge in a timely manner.

The fluid, freed from large impurities, passes through the holes of the smallest bases of the cones of the diaphragms 16 along the vertical plate 7 upwards, due to which the rotational energy is completely extinguished, and the horizontal reactive forces provide fine impurities to the zone of action of the conical diaphragms 16, in which the liquid slowly moves, and particles of pollution are deposited on conical diaphragms, slide down in enlarged form, are picked up at the periphery of the diaphragms by a rotating flow and descend.

At this moment in the upper part of the body a zone of circulation of small particles is formed, which, enlarging on the upper conical diaphragm, descend to the bottom 3. In addition, the liquid enters the annular overflow channel 14, where it is finally cleaned using a cylindrical filter 15 and is discharged through the outlet 9.

five

1680260

6

The light fraction of the liquid is discharged through

pipe 6. Hydrodynamic environment in

the system is controlled by a pressure gauge 5 and visually through a window 12.

The proposed device, compared with prototype 5 is compact and can be widely used for filtering liquids containing fine impurities. This device is locked in series and in parallel in pressure mode with other devices and can be mounted at any height.

Claims (2)

Claim 1. A device for phase separation, containing a container with a nozzle for discharging purified liquid, placed along the vessel axis one above the other conical annular diaphragms, located at their level an input tangential nozzle, characterized in that, in order to intensify cleaning of the liquid from fine impurities , it is equipped with a vertical plate installed along the vessel's axis, diaphragms are fitted with visors placed along the outer perimeter, the nozzle for discharging the purified liquid 10 is located on the inlet pipe, and the separating and wall is formed by a mesh filter, wherein the transfer tube is recessed below the top aperture and the bottom of the container is flat. 2. The device according to p. 1, characterized in that it is provided with an additional mesh filter installed in front of the outlet pipe of the purified liquid. Aa