SU665049A1 - Water intake - Google Patents

Description

one

The invention relates to hydraulic engineering applications that allow water intake by pumping stations from reservoirs of fishery importance.

Known intake construction of pumping stations, including the mesh drum and the washing device 1.

This water intake structure does not provide effective cleaning of the mesh drum.

The aim of the invention is to increase the efficiency of the water intake facility.

The goal is achieved by the fact that blades are installed opposite the pipe with holes at an angle to their axes on the outer side of the mesh drum, which are connected to the washing device, and the blades are made in a streamlined shape.

FIG. I depicts the proposed water intake structure, a longitudinal section; in fig. 2 is a section A-A in FIG. one.

The water intake structure contains a mesh drum 1 fixedly attached by a flange 2 to the suction pipe of the pumping unit. Inside the mesh 6apa6aiia 1, a washing device is installed, including a central hollow shaft 3 with side branches 4 made of hollow tubes with perforations in the form of washing holes 5 facing

to the drum mesh. The central hollow shaft 3 is mounted for rotation in the sub-supports 6. To one of the ends of the central hollow shaft 3 projecting beyond the drum, longitudinal blades 8 fixed on the outer side of the mesh drum 1 opposite the flushing openings 5 are attached to the brackets 7. Blades 8 in cross-section made drop-shaped

and installed in such a way that the inner faces of the blades 8 are made up with the base of the washing hole 5, an obtuse angle facing the opposite direction of the rotation of the washer attachment, and

external faces are parallel to the tangent and forming mesh drum 1. To supply flushing water to the openings 5, a pressure pipe 9 is provided, which is hydraulically connected to

cavity central shaft 3.

Water intake works as follows.

The flushing water supplied by the pressure pipe 9 through the cavity of the central shaft of the shaft 3 enters the lateral branches 4 and through the holes 5 with pressure jets directed perpendicular to the screen of the drum 1, flushes the grid cells. The wash water streams that have passed through the reel 1 mesh, have excess kinetic energy beyond its borders, interact with the inner edges of the vanes 8 at an angle to them, and reflecting from the edges create a reactive force that ensures the flushing of the rinsing device. At the same time, the longitudinal vanes 8, the slips at the surface of the reel 1 mesh, provide an improved cleaning of the mesh from the outside.

The use of the proposed water intake facility makes it possible to increase the cleaning efficiency of the mesh drum and to improve the fish stock, the useful properties of structures of this type.

Claims (2)

1. A water intake structure, including a mesh drum attached to the pump suction, which is equipped with a flushing device in the axis of the pump, made in the form of a pipe with holes and connected to the pressure line of the pump, in order to increase the working efficiency The outer side of the mesh drum opposite the pipe, with holes at an angle to their axes, has paddles that are connected to the washing device. 2. Water intake structure according to claim 1, characterized in that the blades are made of a streamlined shape. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 562616, cl. E 02B 9/04, 1975.