SU914711A1 - Water-aerating device - Google Patents

Description

The invention relates to a water-generating devices of hydraulic structures, such as weirs and fleets, and can be used for. cleaning ponds contaminated by petroleum products and other impurities, sub ^{1 * 3} authorizing flotation effect, as well as for water oxygenation and hydrated kinetic energy of the flow.

A water-generating device is known, which includes a water control board with air supply pipes installed at the dam base and a water-air ejector containing a block of nozzles for water supply, a mixing chamber and a diffuser [1] ·

However, when large objects are passing through the dam (logs, ice floes, etc.) / especially when the water control board is raised, it is possible that the nozzle block of the water-air ejector is clogged or destroyed, which reduces the reliability of the device.

Nel of the invention - improving the reliability of the water aerial device.

2

This object is achieved in that vodoaeriruyuschem device vklyuchayu- _ν shom installed at the base of the dam water regulating shield vozduhopodvo- as coming from pipes and water-air ejector comprising a nozzle unit for supplying water, mixing chamber and a diffuser unit installed in the intake nozzle recess formed in base of the dam and equipped with a safety grid.

The drawing schematically shows a water aerating device, the section.

The water-aerating device includes a water control board 2 installed at the base of the dam with air supply pipes 3 and a water-air ejector containing a block of 4 nozzles for supplying water, a mixing chamber 5 and a diffuser 6. The nozzle block 4 is installed in the intake recess 7 provided safety guard 8.

Water aeration device also

Includes foam tray 9.

3,907;

The device works as follows.

Water through the safety grate 8, the intake recess 7, made in the base 1 of the dam, enters the '5 in block 4 of the nozzles. The streams of water flowing from the nozzle unit 4 entrain air entering through the air supply pipes 3 of the water control board 2 into the mixing chamber 5. In the chamber 5, the mixing of the water jet and the air are mixed, as a result of which a simultaneous saturation (aeration) of the water with air occurs. Formed in the chamber 5 mixing two-phase water-air. 15

the flow through the diffuser 6 enters the zone behind the water regulating shield 2, where flotation water purification takes place; The foam that emerges on the surface of the water is delayed by a foam collecting tray'9, 20

by which it is discharged into the sump (shown in the drawing).

In the case of passing large objects through the dam, especially when raised

14

volume of the water control board, these objects pass over the water-air ejector, bypassing the nozzle block, without clogging or destroying it, which increases the reliability of the airborne device.

Claims (1)

Claim Water aerating device containing a water control panel with air supply pipes installed at the dam base, and a water-air ejector containing a nozzle unit for supplying water, a mixing chamber and a diffuser, characterized in that, in order to improve reliability, the nozzle unit is installed in the intake recess dam and equipped with a safety grate.