RU217939U1 - NOZZLE DRAINAGE FILTRATION DEVICE - Google Patents

Abstract

The utility model relates to water purification and can be used in filtration systems, filters for various purposes, both pressure and non-pressure. Nozzle drainage filtration device, consisting of a vertically mounted central riser of the drainage pipe with its transition and continuation at the bottom into the outlet distribution line of the base of the nozzle drainage, which is provided with drainage holes for each respective nozzle installed on the lower outlet distribution line and facing vertically upwards for directional water flow in filtration and backwash modes, characterized in that the lower outlet distribution line is a twisting flat hyperbolic spiral made of a flexible material of the tube profile of the same section. The central riser is a drainage pipe for supplying direct and reverse direction of water flow for filtration and backwashing mode.

Description

The utility model relates to water purification and can be used in filtration systems, filters for various purposes, both pressure and non-pressure.

The aim is to increase the reliability of the drainage system and simplify the design of the filter device.

Nozzle drainage has an effective property of washing, cleaning the filtering system by taking water from various water contaminants, accumulations and fine deposits, which guarantees the prevention of their further ingress into the filter material and purified water.

Known filter for water purification, patent No. 2193911, which contains a cylindrical body, divided by a horizontal partition with holes in the chamber of the source liquid and the filtrate chamber, a coaxial filter element, a granular load and a branch pipe for supplying and discharging water, and the granular load is located on both sides filter element to half of its side [1].

Common disadvantages include the complexity of manufacturing and assembling structural elements, as well as inconvenience during operation associated with maintenance and cleaning.

In addition, a significant disadvantage of the known filter is the inability to self-cleaning. Secondary removal of various contaminants into the water is possible, which are capable of settling, concentrating and depositing when the filter is not working in a stationary static load, since the granular load is located and filled with separation of the phase boundary of various media on both sides of the filter element by half its height. This significantly reduces the flow volume of perforated pipes with open holes. Holes and pipes during filter operation will most likely be plugged, clogged, with granular material with various contaminants, not ensuring uniform distribution of wash water over the entire filter area. In addition, this tubular drainage distribution filter device has a large material consumption and the complexity of manufacturing, installation and impossibility of maintenance during operation.

The objective of the proposed utility model is to create a nozzle drainage device of a special shape, adaptable to any size of treatment systems and filters, capable of effectively performing its functions by eliminating the secondary active removal of various water contaminants and fine sediments into purified water.

The technical result of the claimed utility model.

The nozzle drainage filtration device, unlike known drainage systems, does not form stagnant, non-flushing zones and can be mounted in an existing filter through a mounting hole.

It also provides an increase in work efficiency and an increase in the quality of filtered water due to the uniform distribution of individual flows and a decrease in the amount of flush water, a simplification of the design, a reduction in the cost of manufacture and installation, as well as energy consumption of flush water pumps.

The nozzle drainage filtration device is identified directly by its design of a special structure, the elements of which are shown in the figures.

In FIG. 1 is a cross-sectional view of the relevant nozzle drainage device, showing the general view and arrangement of the elements contained in the filter device.

In FIG. 2 shows an enlarged fragment of the nozzle of the drainage filtration device.

In FIG. 3 shows the installation diagram of the nozzle drainage device in the filter section.

Nozzle drainage, the structure of the drainage distribution device in the filtration system (figure 1) is a single structural form, which can be identified by the following elements: 1 - vertical drainage pipe, central riser; 2 - lower output distribution line of the base of the nozzle drainage; 3 - drainage nozzle with slotted cap; 4 - housing, filter reservoir; 5 - filter material.

The lower output distribution line of the base of the nozzle drainage 2 is made of a flexible tube with the same internal section and is rigidly attached to the vertical pipe of the central riser.

The lower output distribution line of the base of the nozzle drainage 2 is permanently in working condition in the form of a twisting flat (Archimedean or hyperbolic) spiral and is located in the lower layer of the filter material 5.

The drainage filtration device (Fig. 2) contains nozzles with a slotted cap 6, which are located on the lower output distribution line of the base of the nozzle drainage 2 in conjunction with the corresponding holes.

Filtration mode, the operation of the nozzle drainage device is that the untreated water under pressure enters the filter through the control valve, passes through the filter material 5 into the lower layer of the filter. Further, the water purified from impurities passes into the outlet line 2 through the nozzle drainage 3. Structurally, the purified water enters consumers through the drainage pipe of the central riser 1.

The backwash mode consists in the fact that through the vertical pipe of the central riser 1 under pressure, water in the opposite direction of the filtration mode through the nozzles 3 reversely enters the lower layer of the filter material 5. The created reverse flow of water reduces the compaction of the filter load, loosens and uplifts the accumulated contaminants in the form suspension to remove them from the filter by active washing.

The proposed nozzle drainage filtration device (Fig. 3) determines the design that allows for simple installation and dismantling of the drainage device in the filter due to the flexible tube of the lower output line of the base of the nozzle drainage 2, consisting of the drain slotted caps of the nozzle 3 attached to it (not indicated) in the existing filter housing 4.

Nozzle drainage filtration device, its lower outlet distribution line of the nozzle drainage base 2, when installed, initially has a linear or helical shape. When installed in place in the filter with rotation 7 of the central riser 1 from its transition and continuation in the lower part, the flexible tube of the outlet line 2 straightens out in the form of a twisting flat spiral, forms a distributed base of the nozzle drainage and is fixed in the filter material layer 5 when it is backfilled.

This method of mounting the nozzle drainage device in the filter tank 4 is possible due to the torque 7 transmitted to the pipe of the central riser 1 and the axial force on the flexible tube of the output line 2.

The versatility lies in the fact that the installation, dismantling of the nozzle drainage device, the replacement of the spent filter material is carried out without violating the integrity of the structure and disassembling the main body of the filter reservoir.

When designing a nozzle drainage filtration device, it is necessary to take into account the required volume, flow for water purification and the dimensions of the elements of the filter itself [4].

Calculation of the developed drainage filtration device. The capacity of the filter's drainage device is calculated by determining the flow rate of a given volume of water flushing:

where F _f - filter cross-sectional area, m ² ,

V _pr - flushing speed, m/h.

The pipe diameter d of the drainage system is determined by the formula:

where Q _prom - washing flow, m ³ / s.

Taking into account the required flushing rate of the system, depending on the size of the filter and its cross-sectional area, the total area of the drainage holes is calculated. Optimally, the total area of the drainage holes should be 200 times less than the cross-sectional area of the filter.

The total area of drainage holes is determined by the formula:

where F _f is the cross-sectional area of the filter, m ² .

The required number of nozzles 3 (Fig. 1) is taken according to the formula:

where Σ F _otv - the total area of the drainage holes, cm ² ;

S _c - the area of the holes of one nozzle, cm ² .

Implementation of the utility model.

The proposed nozzle drainage filtration device has been manufactured and tested for efficiency for further operation.

Example 1. Tests were carried out on a prototype, consisting of a control unit, a filter housing with a drain valve, a nozzle drainage assembly; filter fillings: quartz gravel, fractions of 2-5 mm and EcoFerox iron removal load.

In order to check the possibility of coking in the lower layers of the filter, 25 kg of slaked lime was added to the system in order to create water with increased liming.

The tests were carried out for 14 days. Washing was carried out once after 14 days. As a result of the tests, it was found that in the lower layers of the filter filling, with the constant use of the device, coking does not occur.

Example 2. Tests were carried out on a prototype according to the method described in example 1.

In order to check the possibility of coking in the lower layers of the filter, 25 kg of slaked lime was added to the system in order to create water with increased liming, and the amount of backfill was reduced by 50% in order to increase the load on the filtrate. The tests were carried out for 14 days. Washing was carried out daily.

As a result of testing the prototype of the nozzle drainage device, it was found that no coked filtrate was found in the lower layers of the filter, with constant use and daily washing.

Claims (4)

1. Nozzle drainage filtration device, consisting of a vertically mounted central riser of the drainage pipe with its transition and continuation at the bottom into the outlet distribution line of the base of the nozzle drainage, which is provided with drainage holes for each respective nozzle installed on the lower outlet distribution line and facing vertically upwards for a directed water flow in filtration and backwash modes, characterized in that the lower outlet distribution line is a twisting flat hyperbolic spiral made of a flexible material of a tube profile of one section. 2. Nozzle drainage filtration device according to claim 1, characterized in that the central riser is a vertical drainage pipe for supplying direct and reverse water flow for the filtration and backwash mode. 3. Nozzle drainage filtration device according to claim 1, characterized in that the central riser, when mounting the lower output distribution line and putting it in place in the filter, starting from the transition of the lower part of the drainage pipe to the continuation of the outlet line of the base of the nozzle drainage, is made with the possibility rotation, in which the lower output distribution line is straightened into a twisting flat spiral, forming a distributed base of the nozzle drainage. 4. Nozzle drainage filtration device according to claim 1, characterized in that the required number of nozzles is determined relative to the cross-sectional diameter of the drainage pipe of the filtration device.

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