RU28116U1 - Flotator - Google Patents

Abstract

1. A flotator comprising a flotation chamber, a settling chamber with a conical bottom and a nozzle for removing non-floatable sediment, a source liquid distribution unit, an air supply and distribution unit inside the flotation chamber, a foam tray in the upper part of the flotation chamber and a nozzle for draining clarified liquid, characterized the fact that the flotation chamber further comprises thin-layer vertical modules in the form of hollow coaxially mounted cylinders located inside this chamber above the feed unit and air distribution, and an air curtain in front of the inlet of the clarified fluid outlet, the nozzle being placed in the lower part of the flotation chamber, and the upper part of the flotation chamber equipped with an inclined side diametrically opposite to the foam tray, expanding from the bottom up, in addition, the distribution unit the initial liquid is made in the form of a cone facing the base of the flotation chamber. 2. The skimmer according to claim 1, characterized in that the cone is made hollow with holes.

Description

2002122860

2 in and

The utility model relates to devices for wastewater treatment from fats, protein organic and other floated compounds. It can be used in impoverished, livestock and other related industries.

The well-known flotator for cleaning liquids from mechanical gfimes (A.С- No. 1504222, С 02 F 1/24, 1/46, 1/52), adopted for the analogue, contains a sedimentation tank, sedimentation tanks, which are made in the form of inverted pyramids. Sedimentary accumulators are equipped with nozzles with valves, designed for the release of sediment. In the central part of the sump there is a rectangular-shaped pipe, tapering to the bottom (pipe A). The electrode stack is located in the middle of the pipe. In the upper part of the pipe is the main device for introducing part of the contaminated water. Under the package of electrodes is an additional device for introducing another part of the contaminated water in the form of perforated pipelines. Pa inclined surfaces inside the tapering part of the pipe installed inclined ribs, and between their upper edges and the walls of the pipe there is a gap. The narrowing part of the pipe A is lowered into the upwardly expanding tray. At the bottom of the tray is a perforated compressed air line. Pipe A with a package of electrodes is coaxially located in another pipe, neither the 11th part of which has an extension, and the upper edges HIRSCHRCH ™, MnK7C02Fl / 24

Flotator

expanding to the bottom of the pipe, over the entire area between it and the device case, elements for thin-layer sedimentation are installed. A fine-mesh mesh and a layer of filtering material are laid directly on the thin-layer elements, above which there are devices for removing purified water, made in the form of drainage trays. For the removal of gases formed on the outer side of the upper edges of the pipe expanding to the bottom, side slopes are installed, made in the form of boxes with holes in the pipe walls. The disadvantages of this design is that the design of the flotator is complex, cumbersome, inclined thin-layer elements are clogged with floating particles of suspension, which reduces the efficiency of the flotator.

Known pressure flotator (AS No. 1655908, C 02 F 1/24, 03 D 1/14), adopted as a prototype containing flotation, settling and filtering chambers. The flotation chamber has no bottom and is placed inside the settling tank. The flotator is connected to the pressure tank through a pump, between which an ejector is installed. The flotation chamber contains an air mixture supply device located inside it, a source distribution unit in the form of a pipe with S-shaped tubular blades with longitudinal slit-like openings in the lower part. However, the unit is equipped with a device for removing foam in the form of S-shaped blades rigidly fixed on a vertical drive shaft, directed

The chamber in the conical dash has a fitting for periodic removal of sediment. The filtering chamber is filled with a large-porous filtering element on a support grid, under which a perforated circular pipe is located, designed to flush the filter with a reverse flow of water from the pipeline. At the same level, there is a fitting for the discharge of clarified water. Above the filter load is a fitting for draining the wash water. The filter chamber bends around the settling chamber and its upper edge is higher than the upper edge of the settling chamber. A part of the initial liquid is filtered through a foam layer in the upper part of the flotator, and suspended particles deposited in the foam layer are discharged by S-shaped blades — devices for removing foam into the foam-tray. The liquid filtered through the foam layer enters the settling chamber and then overflows over the edge of the settling chamber into the filtering chamber, where it is filtered, undergoing a filling charge, after which, like clarified, it is discharged through a pipe to drain clarified water. Large particles settle in the conical bottom of the settling camphor and are discharged through a pipe to remove sediment. This ensures the design quality of the cleaning. However, the disadvantages of this design are that there is turbulence in the flow in the settling chamber, and as a result, the destruction of the flotation complexes, which leads to an excess of air supply to Baiyiyo and the achievement of the theoretically possible effect of the flotana - S-shaped blades do not trap foam at the extreme and also destroy it with their mechanical action.

The objective of the utility model is to increase the efficiency of the flotator while simplifying its design.

The problem is solved as follows. The proposed flotator contains two chambers: flotation and settling with a conical bottom and a pipe to remove non-floated sediment. The flotator also contains, like the prototype, an initial liquid distribution unit, an air supply and distribution device inside the flotation chamber, a foam trap in the upper part of the flotation chamber, and a nozzle for draining the clarified liquid. Unlike the known flotator in the inventive device, the flotation chamber additionally contains thin-layer modules placed inside it, which are cylindrical partitions, in the form of hollow coaxially mounted cylinders above the air / for air distribution. In the upper part of the flotation chamber, an inclined guarding rim is made from the inside, expanding in the direction from the bottom up and diametrically opposite to the foam tray, which performs the function of organizing the direction of movement of the foam flow into the foam tray. The difference from the known flotator is also that the device p | 1 distribution of the source fluid is made in the form of a hollow cone with holes facing the base to the flotation chamber. In addition, the flotator additionally contains an air curtain in front of the inlet of the pipe for the removal of clarified water, and the pipe itself is placed in

bottom of the flotation chamber. Thus, the proposed design of the flotator differs from the prototype in that thin-layer modules are vertically lowered downwards inside the flotation chamber, which make it possible to exclude circular motion of the liquid, stagnant zones, and also increases the volume utilization coefficient with higher productivity of the entire device. An air curtain (cut-off) is installed in front of the outlet pipe for clarified water. The cutter performs two functions: firstly, it allows the particles that have passed through the fleetpiyiyibie to be retained and podschmivaet them in the water-air mixture to the surface, which further increases the percentage of cleaning and, secondly, directs the foam formed in the foam tray. Thin-layer vertical modules introduced into the design make it possible to achieve a uniform air supply to each point on the surface of the flotator, which eliminates stagnant zones, and also allows flotation complexes to rise to the SL01P foam with less decaying. In addition, vertically pubescent thin-layer modules, if clogged or overgrown, are easier to spot. An installed air curtain (cut-off) in front of the outlet for clarified water removal reduces the probability of breakthrough of particles that have not had time to swallow and this also increases the cleaning effect of the entire structure. Thus, an air curtain (cut-off) sets the circular motion of water in the flotation chamber and allows the foam to be formed on the surface without mechanical impact, which does not lead to its (foam) destruction. This increases the amount of sediment collected from the flotator. A node distribution of the source fluid, made in the form of a cone with holes, allows you to evenly (in volume) to distribute the source fluid; to achieve the effect of sprinkling, which allows an additional eighty water air; and make a first-drop drip-blow cleaning — that is, where the cleanest suspension is located at the periphery of the flotator, and the dirtiest, rolling down the cone into its holes, is in the center, which increases the suspension of this suspension until it leaves the flotator. This allows you to increase the effect of the entire structure. The proposed design of the flotator is easier to manufacture, as it contains fewer nodes and elements. Such a design allows to achieve the compactness of structures: combining two cameras in one housing. The softness of the proposed technical solution is illustrated by the drawing, where Fig. 1 schematically shows a longitudinal section of a flotator.

Thin-layer modules 2 are located inside the flotation chamber 1. They are hollow cylinders mounted coaxially to the cylindrical flotation chamber 1. At the bottom of the flotation chamber 1, there is an air supply and distribution unit inside the chamber — an aerator 3. The source liquid distribution unit 4 is installed coaxially to the pipeline for supplying the source fluid 5 and is made in the form of a cone or hollow cone with holes. In the upper part of the flotation chamber 1 there is a foam trap 6 and an inclined sidewall for organizing the movement of the foam 7. The settling chamber 8 in the lower part of the conical bottom has a pipe 9 for periodic removal of accumulated non-floated sludge 10. For removal of clarified liquid in the lower part of the flotation chamber 1 is located a pipe for draining the clarified liquid 11. An air curtain (cut-off) 12 is installed in front of this pipeline.

The flotator operates as follows. To supply air to the flotation chamber 1 and the air curtain 12, the flotator is connected through a main riser piping to a blower. A contaminated initial fluid is gravity-fed or pressurized through a main supply pipe 5 to cone 4 and is hit by a spray, which allows to achieve a sprinkling effect and evenly distribute the supplied cleaned liquid over the surface of the flotator. In addition, the initial liquid, falling on the cone 4, performing the function of a droplet former, undergoes primary cleaning - exfoliation, because drop-by-drop cleaning occurs, in which the most clarified part of the liquid is sprayed to the periphery, and the more contaminated A1 — rolls along the droplet former and falls in the center of flotation chamber 1. Falling droplets of the effluent source fluid radrre on the surface of the foam layer in the upper part of flotation chamber 1, eject air (effect sprinkling), which allows to achieve a higher degree of saturation of water with air. If the cone is made with holes, then a more uniform sprinkling is achieved over the entire area of the flotation chamber. At the same time, some floated particles are immediately retained in the top layer 13, while non-floated and frequently phdotized particles move towards the air flow

along thin-layer modules 2. As a result, the floated particles, forming a flotation complex with air bubbles, rise up, and the peflotireium and flew-through particles that have slipped by the movement of water are pulled to the cutter 12, where they are finally separated. Oil-free

- settle under the action of gravity into the settling chamber 8, and float

- rise by a water-air flow to the surface. The cutter 12 prevents ingress of non-floated particles into the pipe 11 and carries them to the surface. Heavier non-floatable impurities deposited in the settling chamber 8 on the conical bottom accumulate in the form of sediment 10 and are periodically removed through the nozzle 9. The clarified liquid is discharged through the nozzle 11, in front of which an air curtain (cut-off) 12 is installed. The side 7 prevents the foam from spreading 13 and sends it to the foam tray 6. The resulting foam 13 is discharged through the pipe 14.

Claims (2)

1. A flotator comprising a flotation chamber, a settling chamber with a conical bottom and a nozzle for removing non-floatable sediment, a source liquid distribution unit, an air supply and distribution unit inside the flotation chamber, a foam tray in the upper part of the flotation chamber and a nozzle for draining clarified liquid, characterized the fact that the flotation chamber further comprises thin-layer vertical modules in the form of hollow coaxially mounted cylinders located inside this chamber above the feed unit and air distribution, and an air curtain in front of the inlet of the clarified fluid outlet, the nozzle being placed in the lower part of the flotation chamber, and the upper part of the flotation chamber equipped with an inclined side diametrically opposite to the foam tray, expanding from the bottom up, in addition, the distribution unit the initial liquid is made in the form of a cone facing the base of the flotation chamber. 2. The flotator according to claim 1, characterized in that the cone is made hollow with holes.