RU2417333C2 - Air lift with flushing and filtering coarse sewage - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: air lift consists of lifting pipe 1 and filter 2 of coarse sewage in form of pipe with orifices, diametre of which is less, than internal diametre of pipe 1. From beneath filter 2 is equipped with large bubble aerator 7 and hair inclusion filters-traps 8 of a radial brush design. Aerator 7 supplies air from external side of filter 2. Pipe 1 is straight. Chute 13 with an orifice for pipe 1 and collars preventing sprinkling is used for directing a flow of pumped over liquid. Also, pipe 1 has additional coarse sewage filter 6 secured on it. Pipe 1 is movable. When a level of pumped over liquid drops to a set level, a water intake orifice of pipe 1 is closed due to control of float 14 installed on pipe 1; low rate liquid pumping is stopped and, correspondingly, air lift clogging is avoided. In this design of the mixer pipelines 4 and 12 of air and flush water supply are secured on the pipe of filter 2, which eliminates their disconnection, when pipe 1 is extracted together with hair inclusion traps 8.

EFFECT: intensified process of pumping-over, upgraded quality and reliability, simplified maintenance.

1 dwg

Description

The claimed technical solution relates to hydraulic lifting devices and is intended for pumping contaminated waste liquid or liquid sludge in treatment systems.

In technology, airlifts, as a rule, have a wide range of possibilities for use, in particular, these devices are used in mining and geology, agricultural water supply, fire fighting and irrigation.

One of the tasks in the development of airlift is the task of performing a mixer of a special design, which will ensure the supply of air for transporting liquid, also urgent is the problem of cleaning the airlift and increasing the reliability of its operation. In the claimed technical solution, an attempt is made to effectively solve the problem of cleaning the airlift and increase the reliability of its operation.

Known technical solution for airlift with washing and filter of coarse sewage (PROTOTYPE) according to the patent for utility model No. 75701, IPC: F04F 1/18, published on 08.20.2008. According to the technical solution for patent for utility model No. 75701 airlift with washing and filter for rough sewage includes a lifting pipe in the lower part, made in the form of two mixers, the upper mixer is for gas, and the lower mixer is for washing liquid. The airlift prototype is equipped with a filter of coarse sewage in the form of a pipe with holes with a diameter smaller than the inner section of the airlift's water inlet, equipped with filter traps for hair inclusions with a radial brush mounted on the lifting pipe, and a coarse-bubble aerator below.

General features of the claimed technical solution and prototype: the presence of a lifting pipe, a filter of coarse sewage in the form of a pipe with holes smaller in diameter than the inner cross section of the airlift's water inlet, equipped with a coarse-bubble aerator from below and hair-trap filters with a radial brush design.

However, the prototype has the following disadvantages:

1. A coarse-bubble aerator delivers air under the bottom of the filter of coarse sewage, which has a gap at the edges into which, due to the upward movement of the supplied air, fibrous, tape or film contaminants accumulated under the filter of coarse sewage are sucked in;

2. With continuous operation of the airlift and a change in the level of the pumped liquid, it is possible to reduce the performance of the airlift to such a level that sediment may accumulate from below in mixers or in the lifting pipe due to the low flow rate through it, which cannot always be removed by the proposed automatic washing method ;

3. Maintenance of airlift is complicated by the fact that to remove the lifting pipe with filters-catchers of hair inclusions, disconnecting the air supply and washing water pipelines is required;

4. Frequent clogging of the lift pipe occurs in the upper part, at the transition to a curved section.

In the claimed technical solution, the disadvantages are overcome with the help of the following innovations:

1. A large-bubble aerator supplies air from the outside of the filter of coarse sewage, and the riser pipe has an additional filter of coarse sewage mounted on it;

2. The riser pipe and mixer are designed in such a way that the riser is movable and when the level of the pumped liquid decreases to a predetermined level, by adjusting the float installed on the riser, the intake port of the intake pipe is closed, pumping of the liquid stops at a low speed and, accordingly, is excluded clogged airlift for this reason;

3. The mixer is designed in such a way that the air and wash water pipelines are fixed to the filter of coarse sewage; therefore, to remove the lifting pipe with hair traps, they do not need to be disconnected;

4. The lifting pipe is made straight, and to direct the flow of the pumped liquid a tray is used with an opening for the lifting pipe and bumpers to prevent splashing.

The goal, to which the claimed technical solution is directed, is to create an airlift with washing and a filter of coarse sewage with the possibility of intensifying the process, improving the quality, reliability of pumping contaminated liquid, facilitating maintenance without significantly increasing the cost of the process.

The technical task is to develop airlift with flushing and filter of coarse sewage, reliable, easy to maintain, with the possibility of flushing during operation, without stopping the device.

The technical result is the ease of maintenance of the device, improving the quality and reliability of pumping fluid.

The essence of the claimed technical solution is that the airlift with washing and filter of coarse sewage includes a lifting pipe, the filter of coarse sewage in the form of a pipe with holes whose diameter is smaller than the inner diameter of the lifting pipe, the filter of coarse sewage is equipped with a coarse aerator and hair traps filters from below with the design of the radial brush, and coarse aerator made with the possibility of air supply from the outside of the filter of coarse sewage, the lifting pipe is made straight, and To direct the flow of the pumped liquid, a tray is used with an opening for the lifting pipe and splash-resistant bumpers, the lifting pipe also has an additional filter of coarse sewage mounted on it, while the lifting pipe and mixer are made so that the lifting pipe is movable and when the level decreases the pumped liquid to a predetermined level, by adjusting the float installed on the riser, the intake opening of the riser is closed, pumping is stopped and liquids with a low speed and, consequently, clogging of the airlift is eliminated for this reason, and the mixer is designed in such a way that the air and wash water pipelines are fixed to the filter of coarse sewage, therefore, to remove the lifting pipe with hair traps, they do not need to be disconnected.

The drawing shows the inventive device airlift with washing and filter of rough sewage, where:

1 - a lifting pipe;

2 - filter of rough sewage;

3 - bottom of the filter of coarse sewage;

4 - gas supply pipe;

5 - fitting;

6 - filter gas catcher;

7 - coarse aerator;

8 - catcher of hair inclusions;

9 - washing liquid;

10 - gas;

11 - jet;

12 - pipe supply fluid for washing;

13 - tray;

14 - a float;

15 - restrictive ring.

The drawing shows the design of the airlift with washing and filter of coarse sewage.

The design of the airlift with washing and filter of coarse sewage consists of a lifting pipe 1 with a gas filter 6, the bottom of the filter coarse sewer 3 and a float 14 and a trap of hair inclusions 8, which are inserted inside the filter coarse sewage 2, with holes with a diameter of 8-10 mm around and mounted vertically, at the bottom center of the filter of coarse sewage, there is a fitting 5 to which gas 10 is supplied through the gas supply pipe 4, on the outside of the filter of coarse sewage a coarse-bubble aerator pipe 7 is fixed, gas is supplied to the pipes 4 and 7 flow through calibrated jets 11, at the bottom of the filter of coarse sewage there is an opening where the liquid for flushing 9 is periodically supplied through the pipe for supplying washing liquid 12, a tray 13 is put on top of the lifting pipe inserted into the filter of coarse sewage and restrictive rings 15 are fixed on top, which limit the height ascent of the lifting pipe and allowing it to be pulled out together with the tray for cleaning.

The work of airlift with washing and filter of coarse sewage is carried out as follows.

Gas 10 is supplied to gas supply pipe 4 through nozzle 11, which through nozzle 5 enters filter gas trap 6, then the gas bubble rises along lift pipe 1, when the level of pumped liquid rises above level of float 14, the lift pipe rises, opening the water intake hole of the lift pipes, and the rising bubble carries with it the pumped liquid that has passed through the openings of the filter of coarse sewage, filter-gas catcher and filter-catcher of hair inclusions 8, which splashes into the tray 13 and flows over it It is in the desired location. When the level of the pumped liquid drops below the level of the float, then under its own weight, the lifting pipe lowers onto the nozzle 5 and closes the water inlet, and the pumping of liquid stops. The maximum level of ascent of the lifting pipe is limited by the lower restriction ring 15, and the upper restriction ring does not allow the tray 13 to come off during the operation of the airlift and during maintenance. A flushing fluid 9 is supplied to the flushing fluid supply pipe 12 for 20-40 seconds, with which the filter openings are washed from possible contaminants. The coarse bubble aerator 7 during operation creates a stream of air bubbles from the outside of the filter of coarse sewage, repelling floating large impurities from the holes of the filter of coarse sewage 2. If necessary, the filter trap for hair inclusions 8, the filter gas catcher 6, the float 14 and the bottom of the filter of coarse sewage 3 are pulled out for cleaning purposes, together with the lifting pipe and the tray, which is movably connected to the lifting pipe by means of restrictive rings 15, no hoses need to be disconnected. If the filter of coarse sewage 2 is located in the liquid, then when installing the back pipe with the bottom of the filter of coarse sewage 3 and the filter-trap of hair inclusions 8, the holes of the pipe of the filter of coarse sewage 2 are also washed with the displaced liquid, while the bottom of the filter of coarse sewage 3 works as a piston and pushes water, and therefore there is no need to remove the filter of coarse sewage.

When studying the level of technology, no totality of the features of the claimed technical solution and the possibilities of achieving a technical result were found, therefore, we can conclude that the claimed technical solution is new, industrially applicable and has an inventive step.

Claims (1)

Airlift with washing and filter of coarse sewage, including a lifting pipe, filter of coarse sewage in the form of a pipe with holes whose diameter is smaller than the inner diameter of the lifting pipe, the filter of coarse sewage is equipped with a coarse aerator from the bottom and hair traps with a radial brush design, with a coarse aerator made with the possibility of supplying air from the outside of the filter of coarse sewage, the lifting pipe is made straight, and is used to direct the flow of pumped fluid I have a tray with a hole for the lifting pipe and the bumpers that prevent splashing, the lifting pipe also has an additional filter of coarse sewage mounted on it, while the lifting pipe and mixer are made in such a way that the lifting pipe is movable and when the level of pumped liquid is reduced to a predetermined level by adjusting the float mounted on the riser, the intake opening of the riser is closed and pumping of liquid at a low speed stops, and accordingly etsya clogging airlift for this reason, and the mixer is configured such that air supply lines and the washing water pipe fixed to filter coarse impurities, so to extract the riser with hair catchers inclusions do not require disconnection of wires.