RU169536U1 - CENTRIFUGAL THIN LAYER SEPARATOR - Google Patents

Abstract

The utility model relates to devices for the treatment of contaminated wastewater containing suspended solids, oils, emulsions, cutting fluids, oil products, and can be used in machine-building, instrument-making, petrochemical, and other industries. The technical result, the achievement of which the claimed device is aimed, is to increase the cleaning efficiency and ensure ease of use. A centrifugal-thin-layer separator for treating wastewater from oils, oil products and suspended solids contains a cylinder-conical body with nozzles for tangential inlet of waste water, water drainage after the preliminary purification stage, in which cylinder-conical hydrocyclones are coaxially located one below the other, inclined thin-layer disc systems and a foam scraper. On the shaft, rotatably rotatable with a scraper, blades are mounted located in the upper cylindrical-conical hydrocyclone in section at the level of the tangential inlet of the waste water nozzle, while the separator contains an annular drum with a vertical axis of rotation filled with an elastic coalescing bed capable of regeneration, mounted rotatably and located with the condition that water enters the drum cavity from at least one branch pipe of the water outlet after the preliminary cleaning stage, to OMe addition, in the annular cavity of the drum are filling the regeneration zone, and the number of such zones determined by the number of drainage pipes after the cleaning step alternately arranged. In a centrifugal thin layer

Description

The utility model relates to devices for the treatment of contaminated wastewater containing suspended solids, oils, emulsions, cutting fluids, oil products, and can be used in machine-building, instrument-making, petrochemical, and other industries.

Known devices for cleaning liquids from suspended solids by settling in thin layers, for example, the design of thin flat or tubular devices (A. S. Timonin. Environmental Engineering Handbook, vol. 2. Kaluga. Publishing House N. Bochkareva, 2003 - 884 p. Fig. 1.20; 1.23; 1.24, p. 417-419). In thin devices, the separation of pollutants is carried out by the deposition of gravitational forces in the field, according to the Stokes law. This process is quite slow. The intensification of the separation process is carried out in centrifugal hydrocyclones.

Known devices that implement a combination of centrifugal separation and thin-layer sedimentation, for example, in the device "Thin-layer sedimentation tank (patent for utility model No. 110284 from 05/19/2011 Bull. No. 32. 11/20/2011). Centrifugal forces arise due to a special input device, and this device is oriented for small expenses of the liquid being cleaned, since at high costs the dimensions of the rotary device increase and the intensity of centrifugal forces is significantly reduced.

A device is known (A.S. No. 1214597, bull. No. 8 of 02.28.1986) for the purification of oily wastewater containing a cylindrical housing installed one above the other along the axis of the device, a funnel, sewage pipelines, sewage, oil products and sediment, trays for collecting oil products and purified water and a scraper for removing oil products. To increase the intensity and efficiency of wastewater treatment and simplify operation, the device is equipped with a thin-layer module installed concentrically in the funnel in the casing, and a cylinder-conical septum mounted coaxially above the thin-layer module and dividing the upper part of the casing into the collection chamber for oil products and clarified water, while the thin-layer module is made in in the form of truncated conical shelves installed one above the other. The clarified water collection chamber is equipped with replaceable sorbent cassette filters installed between the clarified water collection trays, and the oil product collection chamber is equipped with a coalescing filter. The scraper for removing petroleum products is made in the form of a logarithmic spiral. Sipron and vasopron are used as a coalescing material in cassette filters.

This device is taken by us as a prototype. The disadvantages of the prototype are as follows:

The prototype is characterized by: low cleaning efficiency and low ease of use, as well as additional economic costs. The coalescing filter and replaceable cartridge filters will quickly become saturated and silt with oils, oil products and other pollutants, which requires their frequent replacement. An external drive for rotating the scraper to remove foam requires additional energy costs.

The technical result, the achievement of which the claimed device is directed, is an increase in cleaning efficiency, a reduction in energy costs and an increase in ease of use.

The technical result is achieved by the fact that in a centrifugal-thin-layer separator for treating wastewater from oils, oil products and suspended solids, containing a cylindrical-conical body with nozzles for tangential supply of wastewater, water drainage after the preliminary treatment stage, in which the cylinder is coaxially located one below the other -conic hydrocyclones, systems of inclined thin-layer discs and a scraper for foam removal, the new is that on the shaft, made with the possibility of rotation with a scraper, fixed lop spacers located in the upper cylindrical-conical hydrocyclone in cross section at the level of the tangential inlet water supply pipe, the separator comprising an annular drum with a vertical axis of rotation, filled with an elastic coalescing backfill capable of regeneration, installed with the possibility of rotation and located with the condition of water entering the the cavity of the drum from at least one branch pipe of the water drain after the preliminary cleaning stage, in addition, there are backfill regeneration zones in the cavity of the annular drum Wherein the number of zones is determined by the amount of the drainage pipes after the cleaning step alternately arranged.

In the centrifugal-thin-layer separator in the regeneration zone of the elastic coalescing backfill of the annular drum, there are squeeze rollers rotatably from one drive with the annular drum, the rotation vectors of the squeeze rollers and the annular drum in the regeneration zone coincide in direction, while the annular drum cavity has two the sides are limited by an elastic non-dip net, and under the ring drum in the area of squeezing rollers there is a sump for sludge, and in the cleaning zone there is a sump for clean water.

The essence of the utility model is illustrated in FIG. 1 and 2, where:

FIG. 1 - general view;

FIG. 2 is a cross section of an annular drum with rollers (reamer).

Here:

1. Case.

2. Adjustable valves.

3. The pipe of the tangential supply of wastewater.

4. The system of inclined thin-layer discs.

5. Cylindrical conical hydrocyclones

6. The blades

7. Foam bin

8. Scraper

9. Foam exhaust pipe

10. Val

11. The upper bottom

12. Slurry discharge pipe

13. Wringer rollers

14. gear

15. Drive

16. Toothed ring rack

17. Gears

18. Sludge tray

19. The tray for clean water

20. The inner wall of the annular drum

21. Non-penetrating elastic mesh membrane

22. Elastic coalescing backfill

23. The outer wall of the annular drum

24. A branch pipe of water drainage after a preliminary stage of cleaning

The device is a cylindrical body 1, inside of which are cylindrical-conical hydrocyclones 5 coaxially located, to each of which a tangential water supply pipe 3 with adjustable valves 2 is supplied. In the upper hydrocyclone, in the section of the tangential liquid supply, blades 6 are mounted on the shaft 10. The upper part of the shaft 10 passes through the foam collector 7, where scrapers are located on the shaft 10. The shaft 10 with blades 6 and the scraper 8 is mounted for rotation around the axis of attachment. The foam collector 7 has a foam outlet 9. The foam collector 7 is located in the upper part of the upper bottom 11 mounted on the housing 1. Inside the housing 1, around the cylinder-conical hydrocyclones 5, a system of inclined thin-layer discs 4. is installed. In the lower part of the housing 1, coaxially with the outlet nozzles of cylinder-conical hydrocyclones 5, there is a nozzle for the discharge of sludge 12. In the lower part of the housing 1 there is a nozzle 24 for drainage of water after the preliminary cleaning stage. This pipe 24 is located above a horizontally arranged annular drum with a vertical axis of rotation. The drum consists of an outer wall 23 and an inner wall of the annular drum 20. The space between the walls 20 and 23 is filled with granules of a substance, elastic coalescing backfill 22 (polyurethane foam, sipron, vasopron, etc.), and the top and bottom of the annular drum is limited by a non-failing elastic mesh membrane 21 . Under the ring drum in the area of the branch pipe 24 of the water drain after the preliminary cleaning stage there is a tray for clean water 19. The ring drum is equipped with a regeneration zone of elastic coalescing backfill 22, consisting of two from press rollers 13. The squeeze rollers 13 are driven into rotation from the drive 15. On one shaft of the drive 15 there is a gear wheel 14, which consists of a gear ring 16 mounted on the upper perimeter of the outer wall of the ring drum 23. On the same drive shaft 15 there is a gear 17, which is engaged with the same gear 17 on the shaft of the lower squeeze roller 13. Under the ring drum in the area of the squeeze rollers there is a sump for sludge 18.

Centrifugal thin-layer separator operates as follows. The initial wastewater through the nozzle of the tangential inlet of wastewater 3, through the open adjustable valves 2 enters the cylindrical-conical hydrocyclones 5, where due to the tangential inlet it acquires a rotational movement, and the largest particles of pollutants are discarded to the walls of the hydrocyclones, in the form of condensed sludge slide down and removed through the pipe discharge sludge 12. The main part of the liquid exits the cylinder-conical hydrocyclones 5 through the upper edge. The lightest fractions rise to the upper part of the body, to the neck area of the upper bottom 11. In this zone, scrapers 8 from the rotating blades 6 are driven, which is caused by an incoming flow of water at a tangential entry into the upper cylindrical-conical hydrocyclone 5.

Water released through the top of the cylindrical-conical hydrocyclones 5 enters the space between the system of inclined thin-layer disks 4, where it is further separated. The lightest fractions of contaminants rise along the lower surface of the plates 4 to the neck of the upper bottom 11 and scraper 8 fall into the foam collector 7 and are removed in the form of foam through the branch pipe of the foam 9. The bulk of the water along with flocs of oils and oil products moves down the inclined thin-layer system disks 4 and enters the pipe 24 drain water after a preliminary stage of cleaning. From this nozzle, water enters the zone of the annular drum between the outer wall of the annular drum 23 and the inner wall of the annular drum 20 filled with elastic coalescing backfill 22. Passing through the layer of elastic coalescing backfill 22, sorption results in the mating of oils and oil products in the backfill and purified water enters the clean water tray 19 and is discharged to the consumer. As water passes through the layer of elastic coalescing backfill 22, its sorption capacity may be exhausted and the backfill must be regenerated. Regeneration can be carried out mechanically by squeezing the squeeze rollers 13. To do this, the drive 15 is turned on and the drive shaft starts to rotate the gear 14. From the ring gear 16, the ring drum starts to rotate around a vertical axis. The contaminated backfill layer enters the zone of the rotating squeeze rollers 13 and the squeezed contaminants fall into the sludge tray 18, from where they are disposed of as intended. The pressed elastic coalescing backfill 22 is again ready for absorption and is fed into the cleaning zone under the water pipe 24 after a preliminary cleaning step. Thus, choosing the speed of rotation of the annular drum, depending on the flow of water, its initial concentration of pollutants, it is possible to carry out water purification with continuous regeneration of the sorbent filter element.

Claims (2)

1. A centrifugal-thin-layer separator for treating wastewater from oils, oil products and suspended solids, containing a cylindrical-conical body with nozzles for the tangential supply of wastewater, water drainage after the preliminary purification stage, in which cylindrical-conical hydrocyclones are coaxially located one below the other, systems inclined thin-layer discs and a scraper for removing foam, characterized in that on the shaft, made with the possibility of rotation with a scraper, fixed blades located in the upper hydrocyclone in at the level of the tangential inlet of sewage inlet pipe, the separator comprises an annular drum with a vertical axis of rotation, filled with an elastic coalescing bed capable of regeneration, mounted to rotate and located with the condition that water enters the cavity of the annular drum from at least one branch pipe water after the preliminary cleaning stage, in addition, in the cavity of the annular drum there are backfill regeneration zones, and the number of such zones is determined by the amount m of water discharge pipes after the preliminary cleaning stage, located alternately. 2. The centrifugal-thin-layer separator according to claim 1, characterized in that in the regeneration zone of the backfill of the annular drum there are squeeze rollers rotatably from one drive with the annular drum, the rotation vectors of the squeeze rollers and the annular drum in the regeneration zone coincide in the direction the cavity of the annular drum is bounded on both sides by a non-failing elastic mesh membrane, and under the annular drum in the area of the squeeze rollers there is a sump for sludge, and in the cleaning zone there is a sump for clean th water.

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