RU2411719C1 - Installation to treat water mainly for drip irrigation systems - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural melioration and may be used to prepare water supplied to drip irrigation systems. Installation for water treatment comprises hydraulic cyclone, input and output pipelines with gate valves, chamber of treatment wastes collection with quick-detachable cover to manually remove wastes at one end wall and ball or plug valve for hydraulic cleaning of chamber - at the other one. Pipe filter is installed into inner part of hydraulic cyclone. Pipe filter represents a tubular item, in which perforated bearing frame is installed inside fibrous porous pipe with air gap between them. Lower end of pipe filter is plugged. Corrosion-resistant nozzle with flange is mounted at upper end on thread. Pipe filter is flanged to output nozzle of hydraulic cyclone and irrigation system by bolt joint. Input and output pipelines upstream gate valves are connected to each other by pipeline with gate valve. Such arrangement makes it possible to periodically change mode of operation. In one mode irrigation water is filtered by hydraulic cyclone and pipe filter; in other one - pipe filter and chamber of treatment wastes collection are washed with a return water flow into discharge system.

EFFECT: invention provides for improved technological and operational reliability, service life of drop lines and reduced labour inputs.

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Description

The invention relates to agricultural reclamation, in particular, can be used to prepare water supplied to drip irrigation systems.

Known pressure hydrocyclone, comprising a housing, a drain chamber for draining clean water, a pipeline for tangential supply of untreated water to the housing, a slurry chamber and a valve for removing sludge (see the book of authors Skirdov I.V., Ponomarev V.T. Wastewater treatment in hydrocyclones. - M.: Stroyizdat, 1975 .-- 176 p. - P.34, Fig. 1-19).

The disadvantages of the described high-pressure hydrocyclone in our technical problem include the low quality of water treatment that does not meet the requirements of the degree of purification under irrigation with drip systems.

A known installation for cleaning irrigation water containing a sealed container divided by a partition into two equal halves, filled with filter material (sand of the required fraction).

On top of the tank there is a distribution manifold connected to the tank compartments by nozzles with valves and drain pipes with valves.

A horizontal collector is installed in the lower part of the container along its entire length, into which filtering slotted elements are screwed with a slot size of 0.25 mm in an amount of 64 pieces.

Two fine filters are connected to the outlet pipe of the prefabricated collector.

The installation is equipped with the necessary shutoff, measuring and safety valves, as well as loading and defrosting manholes.

The unit operates in irrigation water purification mode with two compartments at the same time, and in flushing mode - alternately with compartments (see information of QUEEN GIL INTERNATIONAL (horizontal gravel filter) and QUEEN GIL FILTRATION SISTEM).

The disadvantages of this system:

- the sand filter has a limited filtration rate;

- only the top layer (400-500 mm) of the sand load works most effectively in terms of removing the accumulation of pollution;

- there is a removal of filter material (sand) when washing with a reverse current of water at high speed;

- high cost of the product.

A known installation for cleaning irrigation water, mainly for drip irrigation systems, containing a horizontally installed airtight container filled with filter material, upper and lower distribution systems for supplying water to the network and removing pollution products, according to the claims, it is equipped with the ability to periodically change the operating mode: water treatment - flushing the filter material with a reverse current of water by switching a two-position distributor, the casing of which is hydraulically with it is knitted with pipes with upper and lower water distribution systems for supplying water from a pond and discharging purified water, a network for discharging pollution products and sequentially installed cyclones at the inlet and outlet of the hydraulic network, in the cavities of which self-cleaning strainers are mounted, while the bottom parts of the cyclone bodies are paired with collections of pollution products (RU, invention patent No. 227290 C2 51 IPC C02F 1/52 (2006.01), B01D 36/00 (2006.01), B04C 9/00 (2006.01). Installation for water purification mainly for drip irrigation systems. Patent holder: OJSC Volgograd Plant of Irrigation Equipment (RU), authors: Balbekov R.A. (RU), Bezrodnoe N.A. (RU), Saldaev A.M. (RU). Application 20022120959/15, 07/30/2002, published on 03/27/2006, Bull. No. 9).

The closest analogue in essence and purpose to the claimed technical object includes an installation for irrigation water treatment, mainly for drip irrigation systems, a 5000 series hydrocyclone with 8000 series fine filters.

The 5000 series hydrocyclone is made with inlet and outlet diameters from 3/4 ”to 8” and a water flow rate of 2–360 m ³ / h, respectively. In the lower part of the hydrocyclone there is a chamber with a capacity of 2-320 liters for collecting the separated suspension, which is equipped with a special hatch or valve for periodic cleaning of the chamber from sludge. A fine filter slit filter of the required size is installed at the outlet diameter of the hydrocyclone (information ODIS IRRIGATION EQUIPMENT (2002) LTD. Export Price In EURO € JANUARY, 2009, p.19, 21).

The disadvantages of this installation of water purification for drip irrigation systems, which we adopted as the closest analogue, are the complexity of the fine filter, the low life of the filter elements, mechanical cleaning it is almost impossible to restore the original throughput, with a high pressure difference the filter elements fail.

The invention consists in the following.

The task to which the invention is directed is to simplify the design, improve the quality of water treatment, increase the service life and ease of washing the filter element.

The technical result is an increase in technological and operational reliability, the service life of drip lines and lower labor costs.

The specified technical result when implementing the invention in agricultural land reclamation is that in a known installation for water treatment, mainly to drip irrigation systems containing a hydrocyclone, inlet and outlet pipelines with valves, a collection chamber for cleaning waste with a quick-release cover for manual waste removal at one end a wall and a ball or cork valve for hydraulic cleaning of the chamber - on another wall, a pipe filter is installed in the inner part of the hydrocyclone, for example, Ecoton company - a tubular product in which a perforated supporting frame is placed inside a fibrous porous pipe with an air gap between them, the lower end of the pipe filter is plugged, and a corrosion-resistant pipe with a flange and a bolt connection is flanged to the outlet pipe is mounted on the upper end of the pipe a hydrocyclone and an irrigation system, the inlet and outlet pipelines to the valves are connected by a cross-section pipeline with a valve, which allows you to periodically change the operating mode: irrigation water filtration hydrocyclone and trubofiltrom; flushing the pipe filter and the waste collection chamber with a reverse flow of water into the waste system.

The invention is illustrated by drawings.

Figure 1 is a General view of the installation for water purification.

Figure 2 is a top view of the installation for water purification.

Information confirming the possibility of carrying out the invention are as follows.

Drip irrigation has stringent requirements for suspended solids in irrigation water. Since the water flow rates in irrigation drip lines, especially in the end parts, can reach up to 0.01 m / s, then in the presence of suspended particles they precipitate and stick to droppers.

In accordance with the requirements of SNiP 11-31-74, the optimal content of dry (dissolved) substances in the filtered water should be less than 500 mg / l, suspended impurities - less than 50 mg / l.

Installation for water purification, mainly for drip irrigation systems, contains a hydrocyclone 1, inlet pipe 2 with valve 3, outlet pipe 4 with valve 5, flushing pipe 6 with valve 8, waste pipe 7 with tap 9, pipe 10, waste collection chamber cleaning 11 with quick-release cover 13, pipe filter 12, main or distribution pipe 14.

The irrigation water treatment plant can operate in two modes: filtering the supply water for irrigation and flushing the filter element and the collection chamber for cleaning waste with a reverse water flow.

The installation works as follows.

In the irrigation water filtration mode, the valve 8 and the valve 9 are closed, the valves 3 and 5 are open, the water enters through the inlet pipe 2 and pipe 10 into the cylindrical part of the hydrocyclone 1 tangentially, the flow in the hydrocyclone swirls, the heavy fractions hitting the wall along the inclined part hydrocyclone fall down and through the outlet open into the waste collection chamber 11. Then the water, passing through the side surfaces of the pipe filter 12, is cleaned of fine fractions and enters the outlet pipe 4 through the valve 5 to the main or distribution pipe 14.

In the backwash mode, the valves 3 and 5 are closed, the valve 8 and the valve 9 are opened, water from the pipeline 2 enters the pipe 6, then into the pipe 4 and the pipe filter 12. Water passing through the pores of the filter washes and extrudes dissolved substances and suspensions , directing them to the collection chamber for cleaning waste 11 and then through an open valve 9 into the discharge pipe 7. Thereby, the pipe filter 12 and the collection chamber for cleaning waste 11 are simultaneously washed.

Washing the cleaning waste collection chamber can also be carried out during the working process, opening the tap 9 for a short period.

With closed valves, the waste collection chamber 11 can be cleaned manually by opening the quick-release lid 13.

Claims (1)

Installation for water purification, mainly for drip irrigation systems, containing a hydrocyclone, inlet and outlet pipelines with valves, a waste collection chamber with a quick-release lid for manual waste removal on one end wall and a ball or cork valve for hydraulically cleaning the chamber on another wall, characterized in that a pipe filter, for example, from Ecoton, is installed in the inner part of the hydrocyclone — a tubular product in which a perforated supporting frame is placed inside the fibrous pore of a pipe with an air gap between them, the lower end of the pipe filter is plugged, and a corrosion-resistant pipe with a flange is mounted on the upper end of the pipe, bolted to the outlet of the hydrocyclone and the irrigation system, the inlet and outlet pipes to the valves are connected by a pipeline with a valve, which allows you to periodically change the mode of operation: filtering irrigation water with a hydrocyclone and a pipe filter; flushing the pipe filter and the waste collection chamber with a reverse flow of water into the waste system.

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