SU1457957A1 - Vertical thin-layer separation device for purifying liquids - Google Patents

Abstract

The invention relates to devices for cleaning liquids from suspended particles under the action of gravity on the field and can be used in the chemical, petrochemical industry, power system, public utilities and field conditions, mainly in small pressure water treatment plants. The aim of the invention is to increase the degree of purification of the brightened liquid and to expand the technological capabilities of the device. The vertical thin-layer separation device for cleaning liquids comprises a housing with a coagulation chamber coaxially disposed therein, a thin-layer separation unit, which is implemented as a set of inclined rectangular precipitating elements. The precipitation elements are located in the annular space between the casing and the coagulation chamber, the surfaces of which are the surfaces of single-cavity rotational hyperboloids, and are made in the form of flat or corrugated plates, the corrugation increasing towards the periphery. 2 hp f-ly, 3 ill. with (L

Description

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The invention relates to devices for cleaning liquids from suspended particles under the action of a gravitational field and can be used in the chemical, petrochemical industry, power system, public utilities and field conditions, mainly in small pressure water treatment plants.

The purpose of the invention is to increase the degree of cleaning and expand the technological capabilities of the device for thin-layer separation of liquids.

Figure 1 shows the proposed thin-layer separation device for cleaning liquids, a common

view; Fig. 2 shows a section A-A in Fig. 1, in the case of making the plates flat j in Fig. 3, the same as in the case of making the plates corrugated.

The device comprises a housing 1 having the shape of a surface of a single-cavity rotation hyperboloid, with a coagulation chamber 2 coaxially mounted therein, the housing of which also has the form of a single-cavity rotation hyperboloid. Between the hull and the ca

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with

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a vertical, single-section block 3 of thin-layer separation, executed as a set of inclined rectangles of precipitation elements installed in the annular space, is a measure of coagulation. In the lower part of the body there is a conical bunker A to collect sludge, in the upper - a cone 5 to collect the clarified liquid from block 3 thin-layer separation. The device contains nozzles 6, 7 and 8, respectively, for supplying a clarified liquid, draining the clarified liquid and dispensing sediment accumulated in a conical hopper. For a more uniform distribution of flow in the chamber 2, a soothing grating 9 is installed. The precipitation elements are made in the form of flat or corrugated plates 10, the magnitude of the corrugations increasing towards the periphery.

The device works as follows.

The clarified liquid enters through the nozzle 6 into the coagulation chamber 2 and, the passage through the soothing grate 9, is evenly distributed over its cross section. Further, the clarified liquid is evenly distributed over the lower section of the thin layer separation unit, divided into thin layers, the number of which is equal to the number of sedimentation sloping elements, rf moves upwards. In this part of the suspension, containing in liquid, settles on the inclined plates 10, slides over them, collects in the discharge hopper 4 and the devices are removed through the outlet 8 of the sediment. The clarified liquid, passing upward through the thin-layer separation unit and the upper cone 5, is outputted using the nozzle 7; In the proposed device, in block 3 of a thin layer separation, the principle of countercurrent movement of the clarified liquid and movement of sediment deposited on the inclined precipitation elements is applied.

The proposed construction of a thin layer separation unit is applicable

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also for a straight run, when the clarified liquid and the sediment settled on the inclined precipitation elements move downwards. The most optimal ratio of the cross section of the coagulation chamber to the total cross section of the device, which mainly depends on the amount and composition of the suspension in the clarified liquid, is in the range of 0.25-0.35.

In the proposed device, thin-layer separation unit in the form of a set of flat, inclined rectangular settling plates allows to simplify their manufacturing technology, assembly, reduce labor costs and material consumption, simplify the process of cleaning precipitating surfaces from sediment adhering to them. An increase in the degree of purification is achieved due to a more uniform distribution of sediment on the precipitation elements, an improvement in the degree of purification of the precipitation surfaces.

Claims (3)

1. A vertical thin layer separation device for cleaning liquids, comprising a housing with a coagulation chamber coaxially disposed therein and a thin layer block separation in the form of oblique precipitating elements, evenly spaced around the annular space between the casing and the coagulation chamber, from, depriving In order to achieve the degree of purification and expansion of technological capabilities, the casing and the coagulation chamber are in the form of single-lane rotational hyperboloids, and the precipitation elements are made in the form of rectangular plates. 2. Device POP.1, so that the precipitation elements are made flat. 3. The device according to claim 1, characterized in that the precipitation elements are corrugated, the magnitude of the corrugation of which increases towards the periphery .. phi.1 Aa L (reE.Z