SU912855A1 - In-filtration water intake arrangement - Google Patents

Description

one

The invention relates to water supply and hydraulic engineering, and is intended to flush drainage basins from suspended sediments.

The closest to the technical essence of the invention is an infiltration water intake structure containing a water intake well, a deep & numbered pump, catchment wells with valves and an air-wash pipeline 11.

In the course of operation of this infiltration water intake, filtering of soils occurs and sediment builds up in catchment drains, which leads to a decrease in their living cross-section, and in general, leads to a decrease in water intake performance. Reverse filtering of soils on these infiltration “1X water lines” is used for underwater drains of small diameter (up to 400 mm) and small extent (up to 40 m), recessed into the bottom of the river by 1-1.5 m.

Wash is done in a food-grade manner.

The pre-drain is overlapped with a terminal valve and water is pumped into the drain by a pump or from a reservoir. Industrial water coming out of the drain and moving upwards, creeps the soil above the drain and flows it in the same way as loading quick filters. The flushing effect rises dramatically when air is injected into the drain along with water. ,

A disadvantage of this device is that it is used to flush around 10 matted filter soils in order to restore their watertightness and practically does not ensure drainage of sediment from suspended matter.

The purpose of the invention is to preserve the water flow capacity of the drains and improve reliability.

The goal is achieved by the fact that the device of the infiltration water intake, which contains the water-receiving well, is

first pump, water catchment drainage with valves and water-air supply piping, supplying the company with a sludge pump with discharge pipe of flushed water, connections 391

to drains, and the drains are ring-shaped.

FIG. 1 shows a water intake for collecting infiltration waters, a vertical section; in fig. 2 - the same plan view.

The infiltration water intake device consists of a water intake well 1, in which deep-well pumps 2 are installed to supply clean water to the network. An annular drain 3 is inserted in the lower part of the well, fitted with surface-controlled valves 4 and collecting water from the source water of the source 5. At one of the ends of the drain 3 a pipeline 6 is embedded, into which pressurized water is supplied through a pipe with a valve 7 and air through a pipe with a valve 8. To the other end of the drain 3 is connected a sewage pump 9 by means of a pipeline 10 with a valve 11. The device operates as follows. When significant sediment suspended in the ring drain 3 and clogging filter-. gates 7 and 8 through which air and water are supplied to the pipeline 6 under pressure. Water can be supplied both by a specially installed for rinsing with neosomes and by a pump 2 supplying water to the drinking water network. The air is supplied by a compressor. After the supply of air and water, open the valve 11 and turn on the draining pump 9, which discharges the washing water to the dump. After the end of the flushing, the annular drains close the valves 7 and 8 and open the valves 4 controlled from the surface. . To restore the permeability of filtering soils, the same cycle of air-and-air washing of ring drains is performed with the valve 11 closed, and the thruster pump 9 turned off.

The use of ring drains clearly distinguishes the proposed invention from the well-known ones, which allows to preserve a given drain capacity, to periodically flush the drains from lime deposits, without disconnecting from the work as a whole; during flushing, water in the well is excluded.

The number of ring drains per water intake well is determined by calculation to ensure a guaranteed water supply.

Claims (1)

Invention Formula An infiltration water intake device comprising a water intake well, a submersible pump, drainage wells with valves and an airflow flushing pipe, characterized in that, in order to preserve the drainage water carrying capacity and increase the reliability of operation, it is equipped with a drain pump with a drain pipe attached to drains, and the drains are circular. Sources of information taken into account in the examination 1. Predin A. F. Design and operation of infiltration water intakes. M., Stroizdat, 1977, p. 66-69.