SU1274722A2 - Sand trap with hydroelevator system for removing sediment - Google Patents

Abstract

The invention relates to the mechanical purification of liquids, can be used for the purification of industrial and domestic wastewater, and improves the reliability of the sand trap. A sand trap with a hydro-elevator sludge removal system contains a flow-through tank 1 with a sand bunker 2, in which a hydraulic elevator 3 (D) is installed with a pressure pipe 4 for sand disposal. sl 14) 8

Description

G 3 is made with oppositely directed nozzles 5, 6, connected HbiMH. pressure pipe (NT) 7 of industrial water, and is equipped with a cylindrical chamber (CKK) 8. At the bottom of the PAC 8 is placed a drain pipe 9, connected to the pipe (T) 10 for removal of organic primer, 1274

this. HT 7 process water communicates with T 10 for removal of organic impurities through pipeline 12 with a control valve 13, which allows you to adjust the operation of G 3 due to a quantitative redistribution

 Sludge through pipelines 4 and 10. 1 Il.

The invention relates to the mechanical purification of liquids and can be used for the purification of industrial and domestic wastewater. The purpose of the invention is to increase the reliability of the sand trap. The drawing shows a sand trap longitudinal section. A skirting with a hydro-elevator sludge removal system contains a flow-through tank 1 with the Peskov bun 2, in which a hydraulic elevator 3 is installed with a pressure pipe 4 for sand removal. The hydraulic elevator is made with two oppositely directed nozzles 5 and 6, is combined with the hydraulic turbine line 7, and is equipped with a cylinder-conical chamber 8, the upper conical part of which is connected to the pipeline 4 for sand disposal. Inside the lower cylindrical part of the chamber 8, a drain pipe 9 is connected coaxially, connected to the pipeline 10 for removing organic impurities brought to the level of the free surface of the liquid. Between the drain pipe 9 and the wall of the chamber 8 are twisting blades 11. One nozzle 5 of hydraulic elevator 3 is directed into pipeline 4 for sand removal, and the other - nozzle 6 - into drain pipe 9, Pressure pipe line 7 of industrial water is connected to pipeline 10 for removal of organic impurities A pipeline 12 is fitted with a control valve 13. A shut-off valve 14 is installed on the pressure pipe 7. The device operates as follows. When the sediment is removed from the sand bin 2, the technical water is supplied through conduit 7 to the nozzles 5 and 6. Due to the ejection created, the sediment from the sand bunker 2 enters the cylindrical-conical chamber 8 through twisting blades 11 and acquires a circular motion. Under the action of centrifugal forces, sand and mechanical impurities move from the axis of the cylinder-conical chamber 8 to its walls along a spiral trajectory into the upper conical part and are ejected by the flow. a lump of technical water coming out of the nozzle 5 into the pipeline 4 for sand disposal. The organic contaminants, as lighter ones, are concentrated at the axis of the cylinder-conical chamber 8 and are ejected by the flow of process water coming out of the nozzle 6 into the drain pipe 9 and are removed through line 10 to the level of the free surface of the liquid in the sand trap. In the presence of sand in the pipeline 10 for the removal of organic pollution, the hydraulic elevator operation is regulated. To this end, the control valve 13 is opened and part of the process water from the pipeline 7 is transferred through the pipeline 12 to the pipeline 10 to divert organic pollutants. At the same time, the pressure in the pipeline 10 increases, the ejection of sediment by the nozzle 6 decreases, and, consequently, quantitative redistribution of the precipitation withdrawn through pipelines 4 and takes place. 10, which leads to a qualitative change in abstracted sediments. If there are organic impurities in the pipeline 4 for sand extraction, the control valve 13 on the pipeline 12 is covered 1

The quality of the sand being unloaded is achieved by this slime.

In the event of clogging of the twisting blades 11, the hydraulic elevator is flushed with a pressurized flow of process water. For this, the ends of the pipes 4 and 10 are plugged, the shut-off valve 14 on the process water line 7 is closed, and the control valve 13 on the pipe 12 is completely open. When this pressure flow of industrial water, pass through the pipe 12, the pipe 10 and the drain pipe 9 enters the cylindrical-conical chamber 8, from which, the passage through the twisting blades 11, backflow flushes them.

The valves 14 and 13 installed in the pipeline 7 and the pipeline 12 for the passage of industrial water are not subject to clogging, thereby

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reliability of hydraulic elevator operation is increased. The hydraulic elevator is cleaned from clogging without dismantling the hydraulic elevator and turning the sand trap off from work, which simplifies. sand servicing process.

Regulation of the operation of the hydraulic elevator allows to obtain the quality of the discharged sand within the prescribed limits for any changes in the composition of the contaminants in the wastewater.

Claims (1)

Invention Formula Sand trap with hydro-elevator sludge removal system according to author. St. No. 1176910, characterized in that, in order to increase the reliability of the sand trap, it is provided with a pipeline with a control valve connecting the pressure pipe of industrial water with a pipeline for removing organic impurities.