SU1018718A1 - Hydraulic cyclone for cleaning waste waters - Google Patents

Description

2. A hydrocyclone according to claim 1, characterized in that the erection device is designed as a sheet of rubber installed between two plates.

3. A hydrocyclone according to claim 1, characterized in that the scraper device has a shape which is smoothly bent in the direction of flow, a. the cover of the drain chamber is attached to the bottom of the filtrate chamber with pins.

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The invention relates to wastewater treatment devices and can be used for wastewater treatment of sugar factories, in food, pulp and paper, light industry, in mechanical wastewater treatment processes with a significant content of contaminants with a specific gravity, less than the specific gravity of the treated hardness, which, in hydrocyclones of a standard design, are carried to a drain nozzle together with clarified water. A hydrocyclone is known, containing a cylindrical-conical body with a tangential inlet and Khodnev suspension, draining and sand: th nozzles and a drain chamber within which ene location with the filter element, and mounted above the filter element a conical mirror whose apex faces the drain pipe 1.

The disadvantage of this hydrocyclone is the possibility of blocking due to conically divergent rods, a cone-shaped reflector with a significant content of fibrous materials. Clogging the cone-shaped reflector with fibrous materials significantly reduces the initial separation effect. In addition, it is difficult to clean the filter element and the cone-shaped reflector.

Also known is a hydrocyclone containing a cylindrical housing with a lid, a tangential inlet, a slurry patruek and drain pipe to which a drain chamber is attached with a bottom inclined to the branch pipe for collecting trapped dirt particles, a filter element located inside the drain chamber, a filtrate collection chamber with a branch pipe filtrate C2J

The disadvantage of this hydrocyclone is the possibility of blocking the filter element with contaminants. .

The closest to the invention to the technical essence and the achieved result is a rhidrocyclone comprising a cylinder-conical case with a roof, a tangential inlet, a drain and a foot pipe, a drain chamber with a lid and a filter element installed inside it, a collection chamber, and a filter outlet pipe , directing ifoHyc, larger base

. which is attached to the lid of the drain chamber 3.

A disadvantage of the known hydrocyclone is that the contaminants that are retained by the filtering element, which, due to their high fluidity, are displaced toward the periphery, must fall into a circular receiver. At the same time, when processing certain categories of wastewater, the separation products retained on the surface of the filter element have a low moisture content almost non-flowing, for example, wastewater from sugar plants and factories, and their significant content in the treated liquid leads to a decrease in the surface water capacity and working surface element, and ultimately affects the efficiency and performance of the apparatus

The purpose of the invention is to increase the reliability of the hydrocyclone by preventing clogging of the filter element.

The goal is achieved by the fact that a hydrocyclone containing a cylindrical body with a lid, a tangential inlet, a drain and a pneumatic branch, a drain chamber, a F lid and a filter element installed inside It, a filtrate collection chamber with a filtrate drain nozzle, the cone guide, the larger base of which attached to the rim of the drain chamber, equipped with a scraper device with a drive, the shaft of which is placed coaxially with the drain nozzle, a coupling and a sleeve with windows installed on the drain nozzle, th scraping device is attached to the sleeve.

In accordance with the scraper device, execute c. as established between the two plates of rubber sheet.

Preferably scraper; the device had a smoothly curved shape along the flow; and

The drainage chamber bracket is attached to the bottom of the filtrate chamber with pins.

Figure 1 shows the hydrocyclone, a general view; figure 2 - section aa in figure 1.

The hydrocyclone for wastewater treatment contains a cylindrical-conical body 1 with a lid 2f tangential inlet 3, drain 4 and sand 5 branch pipes. The directional truncated cone b is attached to a large base with a large base. 7 of the discharge chamber. The internal cavity bounded by the filter element 8, the cylinder 9 and the hydrocyclone cover 2 forms a filtrate collection chamber 10 with a filtrate outlet 11. A scraper 12, consisting of a sheet rubber installed between two plates and having a shape which is gently curved in the direction of movement, is attached to the sleeve 13 having special windows for entering from the discharge nozzle 4 into the guiding cone b of the treated liquid. The sleeve 13 with the attached shaft 14 rotates freely on bearings 15 and 16 around the drain pipe 4. The driven coupling half 17 of the shaft 14 is connected to the driving coupling half of the electric motor shaft 18 attached to the rack 19 mounted on the drain 7 of the drain chamber. A fitting 20 is attached to the mounting holes of the shaft 14 in the lid of the drain chamber, with a flap 21 for mounting the bearing 16 and the gland 22, and the lid of the drain chamber is attached to the special lugs of the bottom of the filtrate chamber 10 by studs. 23 ..

Hydrocyclone works as follows.

About the initial flow of the tangential inlet pipe 3 post; inside the hydrocyclone. Heavy solid particles with a predominance of particles of mineral origin under the action of centrifugal forces, shifting to the periphery, descend along the wall of a hydrocyclone and are discharged through a sand outlet 5. The clarified waste liquid containing lighter impurities with a predominance of particles of organic origin, rib

the drain nozzle 4, through the super window of the sleeve 13, flows in the direction of the cone 6, where energy is extinguished and the spout flows through the smallest base onto the filter element

8, and, being filtered into the filtrate chamber, is discharged through the filtrate outlet pipe 11. The detained soils, depending on the pressure of the outflow of liquid from the guide cone, form a circular roller of different diameter on the surface of the filter element. In addition, fibrous impurities clog the cells of the filter element. When turned on

the drive providing, in a preferred embodiment, 4-6 revolutions per minute, the forward movement of the scrapers 12 begins. Soils from the surface of the filter element

8 shears by scrapers tangentially to the periphery of the filtering element and fall down from it, for example, into a circular receiver, followed by supply to the conveyor or place

waste storage., depending on the location of the hydrocyclone in the treatment flow. Progressive movement of scrapers along the surface of the filter element

it also provides for the cleaning of the latter from a volcanist with 11 mixtures of clogged cells.

The use of the invention allows to expand the range of application

a centrifugal apparatus for the purification of multiphase liquids containing coarse-dispersed 1 mixtures, differing in their specific weight both in the greater and in the smaller side from the specific gravity of the treated liquid.

Compared to the limestone in this hydrocyclone, the cleaning of the cells and the surface of the filter element ensures the stability of the work of the latter and of the apparatus as a whole; stability

the operation of the filter element is responsible for the specified cleaning effect; obessg allows the device to operate in a wide range of wastewater categories; the hydrocyclone design provides free access to the scrapers and filter element, which facilitates operation.

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Claims (3)

'(54); HYDROCYCLES FOR SEWAGE CLEANING, containing a cylindrical conical housing with a cover, a tangential inlet pipe, a drain and sand pipe, a drain chamber with a cover and a filter element installed inside it, a filtrate collection chamber with a filter discharge pipe, a guide cone, the larger base of which is attached to the cover the drain chamber, from the point of view a join to the fact that, in order to increase the reliability of the hydrocyclone by preventing clogging of the filter element, it is equipped with a scraper device with a drive, al which is placed coaxially with the spout, and a clutch is installed on the drain pipe sleeve with windows, wherein -skrebkovoe device is attached to the sleeve. ^ SUm 1018718 2. hydrocyclone according to π. 1, characterized in that the scraper device is made in the form of a rubber sheet installed between two plates. 3. Hydrocyclone according to π. 1, characterized in that the scraper device has a smoothly curved shape in the direction of flow, and the cover of the drain chamber is attached to the bottom of the filtrate chamber with pins.