RU818U1 - Filter for the purification of drinking tap water - Google Patents

Abstract

1. The filter for the purification of drinking tap water, containing a cylindrical body, a sorption filter element located inside the body, and a latch for mounting the device on a tap, characterized in that. that the filter element made of resorcinol-formaldehyde resin is made in the form of a cup coaxially located inside the housing with a gap, moreover, the thickness of the walls of the cup is 2/3 of its diameter, and a removable exhaust pipe with a length of not more than 55 mm and the inlet valve equipped with a lock nut are angled at least 45 ° to the filter housing. 2. The filter according to claim 1, characterized in that the ratio of the inner diameter of the housing to the outer diameter of the filter element is 1: 0.75 - 0.85.

Description

FM .. FOR FURTHER CLEANING

Drinking tap water

The filter is designed for filtration and absorptive purification of drinking water coming from a centralized water supply system and can be used as a nozzle on a water tap.

Among the solutions of this problem known in the modern literature, several types of devices for water purification can be distinguished:

I. The task is solved with the help of small-sized water purifiers attached to a water tap. These devices assume only filtration of tap water and do not provide for regeneration of the filter. In addition, the lack is the sorbing properties of the filter.

Pat. Germany N3330218.1985, MKM 801 D

2. In this case, the filters consist of three or more sections, fixed by filtering and adsorbing fillers. The housing of the filter is attached to the water tap using hoses. The disadvantage of these devices is also the impossibility of their regeneration and the bulkiness of the structures.

Pat. Czechoslovakia N240183, 1986, MKM S02G1

3. The next type of devices for water purification are devices that involve only the sorption of water pollutants in the absence of filtering ability. In this case, the filter operates without the use of water pressure and in static mode. The main disadvantages of etd: is the lack of purification of water from mechanical mixtures; and the lack of ability to efficiently regenerate.

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V01D G02PI / Pat. ST N2196329, 1989

Closest to the proposed embodiment of the utility model is the filtering device described in US Pat. U.S. 4895651 dated June 23, 1990, class 210/266, LM BOI D 00/00. This filter is mounted directly on the water tap and is filled in its lower part with ion-exchange resins and sorption materials.

The disadvantages of the filter are low filtration ability, due to uncontrolled and high pore size of more than 100 microns more than 100 microns, the inability to regenerate resins and sorption materials at home, the inability to withstand high pressures created by the water supply during partial blockage of the filter by mechanical impurities.

The main advantage of the filter of the proposed design is the improvement of filtration and adsorption purification of drinking water by removing insoluble impurities, chlorine, dissolved heavy metal ions from it / lead, chromium, zinc, aluminum, copper, iron, etc. /, as well as oil products, surface-active substances, phenols and other organic compounds.

Ensuring the filtration-adsorption process is achieved due to the design features of the filter housing, consisting of:

- a cylindrical housing with inlet and outlet pipes,

filtering material from ion-exchange resorcinol formaldehyde resin made in the form of a glass, the wall thickness of which is 2/3 of its diameter,

- fastening to the crane by using the inlet

a nozzle made in the form of a retainer.

- The length of the exhaust pipe is not more than 55 mm, and the angle between the inlet and outlet pat cabin and the housing. Is 45 °.

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In contrast to the considered prototype, the proposed filter uses a highly porous polymer material with a pore size of 5-10 microns, which also has the properties of an ion exchanger. The ion-exchange properties of the polymer material used are due to its constituents: resorcinol and formaldehyde.

In FIG. the assembly drawing of the filter is shown, which consists of a coaxially located housing / 1 / and a filter element / 2 /, between which there is a gap / 3 /, a centering rubber ring / 4 /, an inlet and outlet pipe / 5,6 / two rubber gaskets / 7 , 8 / and nuts / 9 / connecting the filter housing to the tap.

The operation of the filter is as follows.

The untreated water enters through the inlet pipe / 5 / connected to the water tap with the nut / 9 /, and seeps through the outer surface of the filter element / 2 / into its central channel, and then the purified water exits through the outlet pipe / 6 /.

The advantages of the filter compared to the prototype.

I. The found constructive solution allows the filter to be fixed on the water tap and, under the pressure of the water created in the water supply, to pass water through the filter pores. Moreover, the dirt to be cleaned is deposited on the entire outer surface of the filter element, which can be easily cleaned of dirt.

2. The possibility and ease of regeneration.

The mechanical cleaning of the filter element is carried out with a stiff brush under a stream of water.

Chemical cleaning of the filter element from absorbed impurities is carried out by immersion in a 10% soda solution and washing for 5-10 minutes.

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  suspensions.

During operation of the filter, filtered dirt is deposited on the outer surface of the filter element and this process can lead to almost complete non-leakage of water through the filter, however, dirt cannot leak into the water to be cleaned.

3. Reliability of fastening to the crane at high pressures of water.

The proposed design of the filter retainer on the tap provides reliable mounting of the filter at increasing pressures when clogging the pores of the filter element.

7 / Authors / A.M. Fridkin /

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/ V.M. Safin / / N.R. Grebenshchikov /

Claims (2)

1. The filter for the purification of drinking tap water, containing a cylindrical body, a sorption filter element located inside the body, and a latch for mounting the device on a tap, characterized in that. that the filter element made of resorcinol-formaldehyde resin is made in the form of a cup coaxially located inside the housing with a gap, moreover, the thickness of the walls of the cup is 2/3 of its diameter, and a removable exhaust pipe with a length of not more than 55 mm and the inlet valve equipped with a lock nut are angled at least 45 ° to the filter housing. 2. The filter according to claim 1, characterized in that the ratio of the inner diameter of the housing to the outer diameter of the filter element is 1: 0.75 - 0.85.