SU1120948A1 - Aerator - Google Patents

Abstract

An aerator containing a pump and a mixer, comprising a housing with water and air supply nozzles, a tube sheet with nozzles placed inside the housing, mounted in the end cover of the housing of the Venturi tube and intermediate mixing elements located between each nozzle and the Venturi tube, characterized in that ensuring optimal working conditions and reducing the very expense of energy, spring-loaded disks are installed inside the case, and intermediate mixtures are installed. The body elements are fastened to the latter, with the tube made with the possibility of axial movement.

Description

The invention relates to a technique 1) of production, namely to devices designed to enrich water with oxygen in fish ponds.

There is a known aerator for fish ponds, which contains a wing wheel, the upper half of which is enclosed in a casing in the form of a half-cylinder, and a pipeline for supplying air from the compressor to the casing. The device is placed under the ice. The wheel is set in motion by a stream of water exerting pressure on the lower plate of the impeller L.

However, this device has low efficiency and can work only in water bodies with the flow of water.

The closest in technical essence and the achieved effect to the proposed is an aerator containing a pump and a mixer, including a housing with nozzles for supplying water and air, a tube sheet with nozzles placed inside the housing, mounted in the end cover of the Ventura pipe housing and located between each nozzle and Venturi tube intermediate mixing elements 21.

However, the design of this aerator does not allow to change the cross section of the annular gaps between the nozzles, intermediate mixing elements and Venturi tubes and, therefore, to establish such a mode of operation at which the efficiency is maximum. The operation of the aerator in the mode, when its efficiency is lower than the maximum possible, leads to energy waste and low water saturation with oxygen.

The purpose of the invention is to provide optimal working conditions and reduce those energy consumption.

The goal is achieved by the fact that in an aerator containing a pump and a mixer, comprising a housing with water and air supply nozzles, a tube sheet with nozzles inside the housing, mounted in the end cover of the housing of the Venturi tube and intermediate mixing elements located between each nozzle and the Venturi tube The discs are fitted with spring-loaded discs, and the intermediate mixing elements are secured to the latter, with the tube sheet made with the possibility of axial movement.

FIG. 1 schematically shows an aerator, a general view, in FIG. 2 is the same longitudinal section through a mixer} in FIG. 3 - section A-A in FIG. 2

The aerator includes a pump 1 with a drive 2, a mixer 3 and a pipe 4 (FIG. 1). The mixer 3 (FIG. 2) comprises a housing 5 having an end cap 6,. in which the Venturi pipes 7 are mounted, and the pipes 8 and 9 of the supply of water and air respectively.

Inside the housing 5 there is a pipe lattice 10, in which holes the nozzles 11 are fixed.

The tube rack 10 is rigidly connected to the ring 12, on the outer surface there are annular grooves (not shown) in which the sealing rings 13 are made of rubber.

In the space between the Venturi tube 7 and the nozzle 11, intermediate mixing elements are located, each of which consists of a confuser 14 and a nozzle 15. The nozzles 15 have a cylindrical or conical shape or are a combination of a truncated cone and a cylinder. They are rigidly fixed in spring-loaded disks 16, between which resilient elements are arranged, made in the form of springs 17. One end of the adjusting screw 18 is connected by thread to the tube sheet 10, and the other is kinematically connected to the end cap 6 and has a quadrilateral head 19 under the working tool.

The connection of the screw 18 with the clip b is provided by means of an annular protrusion 20 in the holder 21 rigidly mounted on the bracket.

The discs 16 are provided with bushings 22, which enclose the guide rods 23, which are rigidly fixed in the end cap 6. The Venturi tubes 7 are enclosed in a casing 24, which is also mounted on the key 6.

The aerator is mounted on a pontoon or a craft; (not shown).

The aerator works as follows.

The aerator is immersed in water at a design depth at which water does not enter the interior of housing 5 through pipe 4. It can be operated in the same place or move around the water area of the reservoir (when installed on a watercraft), ensuring uniform oxygenation of water. 3 The water sucked in by the pump 1 from the reservoir is supplied under pressure through the nozzle 8 into the interior of the housing 5 and passes successively through the nozzles 1 of the intermediate mixing elements and the Venturi tubes 7, which is in contact with the air that is in the cavity of the housing 5, and is mixed with it. In place of air entrained by the flow of water, air from the atmosphere continuously flows through pipe 4. Since the water / air mixture is ejected from the mixer 3 at a certain depth, the mass transfer process continues as the air bubbles rise to the surface. Since it is theoretically difficult to determine the optimal width of the annular gap between the nozzle 11 and the confuser 14 of the mixing element or between the nozzle of the mixing element 15 and the confuser of the Venturi tube 7, and the efficiency of the aerator depends on this, in practice, these parameters are adjusted under operating conditions. The magnitude of the annular clearances is adjusted by moving the tube sheet 10 along the axis 484 of the mixer in one direction or another. The movement is carried out by the screw 18 while rotating it clockwise or counterclockwise. If the rotation is clockwise, then the grille 10 approaches the grip 6, the springs 17 are compressed, the distances between the nozzles 11, the mixing elements and the benturi pipes 7 change and, as a result, the annular gaps between these parts decrease, which changes condition the air inlet to the water. This ultimately affects the efficiency of the mixer. As the screw 18 rotates in the counterclockwise direction, the width of each annular gap increases accordingly. The use of an adjusting screw, springs and discs allows one to create an aerator that has a maximum efficiency, which consumes less energy for mixing water with air and increases the concentration of water with oxygen compared to a known aerator. The expected economic effect from the application of the proposed aerator in the national economy is approximately 1.2 thousand rubles. in year.

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Claims (1)

AERATOR, comprising a pump and mixer, including a housing with water and air supply nozzles, a tube sheet with nozzles placed inside the housing, mounted in the end cap of the Venturi pipe housing and intermediate mixing elements located between each nozzle and the Venturi pipe, characterized in that, for the purpose of to ensure optimal working conditions and reduce the need for energy consumption, spring-loaded discs are installed inside the housing, and intermediate mixing elements are mounted on the latter, while the pipe sieve It is made with the possibility of axial movement. SU ·. 1120948 Fig 1