SU1142173A1 - Device for removing sand and mechanical impurities from suspensions - Google Patents

Abstract

DEVICE FOR CLEANING SUSPENSIONS FROM SAND AND MECHANICAL: IMPURITIES containing a supply manifold, hydrocyclones connected to it, with drain and peck pipes,: a clarified liquid collection chamber and a sand chamber connected to corresponding hydrocyclones nozzles; the camera for collecting the clarified liquid,: the filtering element, which is distinguished by the fact that, in order to increase the efficiency of the clarification, it is equipped with a pipe with a bell located coaxially with the axial tube inside the filter element, and "formed as a cylindrical chamber, with ribs on its conical portion, rotatably mounted. .

Description

The invention relates to a device for the purification of suspensions from sand and mechanical impurities and can be used in wastewater treatment, in the production of bapkovite-vitamin concentrates, at the stage of purification of salt solutions in chemical and other branches; A device for cleaning waste water from mechanical impurities is known, which includes a cylindrical-conical body, a tangential device for supplying the initial suspension, a chamber for a condensed product in which a filtering element is installed, a device for draining clarified water TlJ. However, the known device is characterized by the fact that as a result of the continuous decrease in the rate of removal of solid particles, the filtering element clogs up, and the efficiency of the device drops sharply. Known hydrocyclone, working with the lower sand chamber f21. However, when working with activated sludge, it is inefficient. In addition, the device does not return the liquid phase from the lower chamber, which is removed from the apparatus through the lower outlet window. And during the separation of the suspension, a large part of the fine solid phase is carried away from the sand chamber due to the latter being washed out by the ascending stream. In the data of hydrocyclone installations during the purification of activated sludge, yeast suspension, or saline solution from sand and mechanical impurities, large losses of the latter occur. The closest to the proposed technical essence and the achieved result is a device containing a power supply manifold, hydrocyclones connected to it with drain and sand pipes, a clarified liquid collection chamber and a sand chamber connected to corresponding hydrocyclone pipes, an axial pipe through which the chamber is connected with the chamber of collecting the clarified liquid, the filter element 31. However, in the known device, when separating the suspension, most of the contamination goes into the flow through the axial tube, since the accumulation and compaction of the solid phase occurs with the valve closed to periodically discharge the accumulated solid mass. The purpose of the invention is to increase the efficiency of clarification. The goal is achieved by the fact that a device containing a supply, a collector, hydrocyclones connected to it with drain and sand pipes, a chamber for collecting clarified liquid and a sand chamber connected to corresponding pipes of hydrocyclones, an axial tube through which the sand chamber is connected to a camera for collecting clarified liquid filter element is provided with a pipe with a bell located coaxially with an axial pipe inside the filter element made in the form of a cylindrical chamber with ribs on its end rotated. The proposed constructive is-. Filling the sand chamber in the device improves the performance of the clarified product, since the processing of less concentrated suspensions, the solid phase condensed in individual separating elements undergoes additional separation in the sand chamber and the filtered liquid phase combines with the main clarified stream. FIG. 1 shows a device, a cut; in fig. 2 - node T in FIG. 1 (installation of the filter chamber). The device consists of a supply manifold 1 for supplying the source, suspension and single separating elements 2, which are connected to supply manifold 1 by means of tangential nozzles 3. Separating elements 2 are equipped with drain nozzles 4 connected to an axial drain pipe 5 and Sand nozzles 6 tangentially connected to shchindro-conical sand chamber 7 with a discharge pipe 8. In the cavity of the sand chamber 7, coaxially 0, a drain pipe 5 disposes a pipe

ba 9 with a bell 10 at its upper end. The drain pipe 5 is recessed into the cavity of the sand chamber 7 and enters the cavity of the socket 10 with a free end. In the cavity of the sand chamber 7 there is a filter chamber 11 which covers the socket 10 and is mounted rotatably on the drain pipe 5 and pipe 9 using bearings 12 installed in t3 subkeys. The conical part 4 of the one-sided camera 11 is joined by flat ribs 14, intended. to create free rotation of the sputtering chamber 11.

The device works by following the specimen.

The outer suspension through the collector 1 and the tangentially located nozzle 3 is fed into the cylindrical separating element 2. Under the action of centrifugal forces in the separating elements 2, the suspension is separated into clarified and condensed streams, which, rotating, are discharged from the apparatus through the central nozzles (clarified flow through the drain pipe 4 enters the axial drain pipe 5, and condensed through the sand pipe 6 enters the tangentially into the cylindrical-conical sand chamber 7). Owing to the tangential supply, the condensed flow acquires a rotation421734

movement inside the sand chamber 7, where it is supplemented. body separation into condensed and clarified streams. The condensed stream J is thrown to the walls of the sand chamber 7 and is directed downwardly to the top of the conical part of the chamber 7 and led out of the device through the nozzle 8. The clarified 10 stream passes through the pores of the filter chamber 11 into its cavity, is trapped in the socket 10 by the stream of clarified liquid It comes from a drain pipe 5, and through pipe 8 15 is led out of the device.

Due to the rotation of the flow of the thickened suspension entering the cavity of the sand chamber 7, the rotational movement through the fins 14 and the bearings t2 with bolsters 13 is transferred to the filtering chamber 11. This causes its self-regeneration, i.e. particulate matter deposited on

25, the surfaces of the filter chamber 11, under the action of centrifugal forces, are thrown against the walls of the sand chamber 7 and removed from the device with the main condensed flow through

0 pipe 8..

The use of the invention significantly improves the performance of the device on the clarified product.

Claims (1)

DEVICE FOR CLEANING SUSPENSIONS FROM SAND AND MECHANICAL IMPURITY, containing feed collector, hydrocyclones connected to it • with drain and sand pipes,. : a clarified liquid collection chamber and a sand chamber connected to corresponding hydrocyclone nozzles, an axial pipe by which a sand chamber is connected to a clarified liquid collection chamber, a filter element, characterized in that, in order to increase the clarification efficiency, it is provided with a pipe with a bell located coaxially with the axial tube inside the filter element, made in the form of a cylindrical chamber with ribs on its conical part, mounted for rotation. . m ¹ 1