RU2132217C1 - Water filter, its cartridge and cartridge attachment thread - Google Patents

Abstract

FIELD: water supply; additional cleaning of water getting from centralized water supply source. SUBSTANCE: filter has intake reservoir with threaded hole, replaceable cartridge with attachment thread for turning into hole and detachable branch pipe on one end of which thread is cut for turning into hole of intake reservoir, and on other end, thread for connecting replaceable cartridge. Cartridge has housing with inlet hole and filtering layers of fiber materials arranged in housing. Filter cartridge has sorptionally-active, ion-exchange and iodinated layers with perforated gaskets between layers. Profile of thread in hole of filter intake reservoir and/or cartridge for filter is nonstandard, in form of equilateral trapezium with larger base of 1.4-2.0 mm and smaller base curved to arc with radius of 0.5 ± 0.1 mm. EFFECT: provision of reliable cleaning of water from ion admixtures, enhanced operating capabilities of filter. 7 cl, 3 dwg

Description

 The invention relates to household equipment for additional purification of water coming from a centralized water supply source.

 For the purification of drinking water can be used installation containing a battery, a treatment tank, pipes and valves (US patent 4623451, CL C 02 F 1/44, publ. 1986). This installation is stationary and can be mounted in a room where there is a water tap, for example in the kitchen. During installation, it is necessary to connect the installation directly to the pipes of the centralized water supply system, which is not always possible and advisable. In addition, the installation is expensive and has large dimensions.

 It is possible to use a filter for additional water purification, which is installed directly on the water tap (RF patent 2027677, class C 02 F 1/28, publ. 1995). Such filters are inconvenient in operation, as they have high performance and to fill any container with purified water, the consumer must be located directly near the open tap for a sufficiently long period of time. In addition, after using the filter, it is usually necessary to remove it from the tap.

 For purification of drinking water can be used a filter containing a receiving tank for untreated water, a replacement cartridge and a receiving tank for purified water (German application 3922391, CL C 02 F 1/42, publ. 1991). The cartridge is screwed into the opening of the receiving tank for raw water and contains a layer of activated carbon and layers of anion exchange resin. Such filters have a low cost and are convenient to use. Their performance depends on the design of the cartridge, the degree of clogging, and the pressure of water at its inlet. The quality of water treatment is determined by the filter materials used in the cartridge. Application Germany 3922391 adopted for the prototype of the claimed group of inventions.

 The objective of the group of inventions is to increase the operational characteristics of the filter.

 The problem is solved due to the fact that the filter for water purification, containing a receiving container with a threaded hole and a replaceable cartridge with a mounting thread for screwing into the aforementioned hole, is equipped with a removable pipe, at one end of which a thread is made for screwing it into the opening of the receiving container, and at the other end is a thread for attaching a replaceable cartridge to it. This allows, if necessary, to increase the water pressure at the inlet of the cartridge and, accordingly, to increase the performance of the filter. The installation of an additional nozzle for the receiving container and the cartridge is advisable, for example, when the cartridge has already spent more than half of its life.

 To control the residual cartridge life or the amount of water passed through it, the filter can be equipped with an appropriate indicator (counter).

 To collect purified water does not require a special container, since the receiving capacity of the filter is made with the possibility of installation on a standardized container, in particular on a glass jar.

 The problem is also solved due to the fact that the cartridge for water purification, comprising a housing with an inlet and an installation thread, and filter layers placed on the housing, at least one of which is made sorption-active, and the other anion-exchange, is equipped with a cation-exchange layer and a layer containing iodinated fiber, wherein the anion-exchange and cation-exchange layers are made of fibrous materials processed respectively in an alkali or acid solution and washed with a deionized liquid, and between the layers p zmescheny perforated liner.

 The presence of cation exchange and anion exchange layers makes it possible to remove a wide range of ionic impurities from water. Using an iodized layer, water is disinfected, and using a sorption-active material containing activated carbon, water is purified from organic impurities. The presence of perforated drainage pads between the layers prevents the weaving of tissue fibers and the predominant flow of water along the inner surface of the cartridge wall. The implementation of fibrous filter materials allows to reduce the size of the cartridge and increase the filter performance.

 The presence of all the mentioned filter layers together makes it possible to purify water from bacterial contaminants, residual chlorine, heavy metal ions, iron, surfactants, aromatic compounds, nitrates, nitrites, chlorides, sulfates, etc.

 To prevent large particles from entering the cartridge, a streamlined cap with slots is made on its body to cover the inlet.

 The problem is also solved due to the fact that the thread made in the opening of the receiving tank of the filter for water purification and / or on the filter cartridge has a non-standard profile, which is based on an equal-sided trapezoid with a large base equal to 1.4 - 2.0 mm, and a smaller base, curved mainly along an arc of a circle with a radius of (0.5 ± 0.1) mm. The same thread is made, respectively, at the ends of the removable filter pipe. This thread profile, as well as the fact that it is double-thread, allows you to securely fasten the filter elements to each other and prevent water leakage without using additional gaskets.

 From a technological point of view, it is advisable to perform a thread diameter equal to (40.0 ± 0.5) mm, and the distance between adjacent turns equal to (2.6 ± 0.1) mm.

 In FIG. 1 shows the appearance of the filter assembly.

 In FIG. 2 is a longitudinal section through a filter.

 In FIG. 3 is a profile of the external and internal threads used to fasten the filter elements to each other.

 The filter contains a receiving tank 1 with a threaded hole 2, a cartridge 3 with a mounting thread 4 and a pipe 5, at one end of which a thread 6 is made for screwing it into the opening of the receiving tank, and at the other end, a thread 7 for attaching a replaceable cartridge 3 to it. The cartridge 3 can be screwed either directly into the opening 2 of the receiving container, or into the nozzle 5. The receiving container is closed by a cover 8. At the bottom of the receiving container there is a movable ring 9 on which a scale 10 is applied, and a fixed ring 11 with a risk 12. Scale 10 and rice and the pointer 12 are the amount of water passed through the filter (or the amount of water that can still pass through the filter cartridge to generate the resource). The thread profile used to fasten the filter elements is based on an isosceles trapezoid with a large base 13 and a smaller base 14. In the particular case, for the internal thread in the opening of the receiving tank, the larger base 14 is equal to (1.7 ± 0.1) mm , and for the external thread on the cartridge - equal to (1.6 ± 0.1) mm. In this case, the maximum profile height is (1 ± 0.1) mm.

 At the base of the receiving tank, a groove 15 is made for its installation on a glass jar, with a capacity of 1-3 liters (not shown in the drawings).

Cartridge 3 contains a housing 16 with an inlet 17. A perforated cover 18 is attached to the housing at the bottom. Layers of filtering materials are placed inside the housing, namely, a layer of a needle-punched filter web VION KN-1, TU 17-14-13-13-137-95, translated into H ⁺ form; fiber layer of chemisorption VION AC-1, TU 6-12-31-774-91, converted to OH ^- form: layer of AS-1 iodinated fiber; a layer of coal fabric "Viskumak", TU 6-12-131-805-93; layer of the cloth VION KN-1.

To transfer KN-1 tissue to the H ⁺ form, it is treated in a solution of hydrochloric acid, washed in deionized water and dried in a centrifuge and in a laminar flow of air purified on Petryanov’s tissues. To transfer AC-1 tissue to OH ^- form, it is treated in a dilute solution of caustic potassium and then washed and dried in the same way as KN-1 tissue.

 The layers of sorption-active and ion-exchange materials 19 are separated by perforated gaskets (nets) 20. Above the layer 19, which is located first along the water, a gasket 20 is also placed. On the cartridge case 16, a streamlined shape cap 21 with slots for water flow is made.

 The filter and cartridge work as follows.

 The assembled filter is mounted on a glass jar. Water is poured into the receiving tank 1 and enters through the hole 2 and the pipe 5 to the cartridge 3. Passing through the cartridge 3, the water is cleaned of unwanted components. After cleaning a certain amount of water (for example, a completely filled receiving tank), the movable ring 9 of the pointer is manually moved one division relative to risks 12.

 The tests showed that when filtering the original Moscow water, there is a decrease in its odor, alkalinity, total hardness, solids, magnesium, ammonia, nitrates, nitrites, chlorides, sulfates, fluorine, chlorine and zinc.

 A cartridge made in accordance with the present invention can be used not only for treating drinking water, but also for preparing water for irrigation of indoor plants, softening water for refueling irons with steaming, and clarifying the water supplied to automatic washing machines.

Claims (7)

 1. A filter for water purification, comprising a receiving container with a threaded hole and a replaceable cartridge with a mounting thread for screwing into said hole, characterized in that it is provided with a removable pipe, at one end of which a thread is made for screwing into the opening of the receiving container, and the other end is a thread for attaching a replaceable cartridge to it.  2. The filter according to claim 1, characterized in that it is provided with an indicator of the amount of water passed through it or the remaining cartridge life.  3. The filter according to claim 1 or 2, characterized in that the receiving tank is made with the possibility of installation on a standardized tank for purified water, in particular on a glass jar.  4. A cartridge for water purification, comprising a housing with an inlet and an installation thread and filter layers located in the housing, at least one of which is made sorption-active, and the other is anion-exchange, characterized in that it is equipped with a cation-exchange layer and a layer containing iodized fiber, moreover, the anion-exchange and cation-exchange layers are made of fibrous materials treated respectively in an alkali or acid solution and washed with a deionized liquid, and perforated layers are placed between the layers masonry.  5. The cartridge according to claim 4, characterized in that a streamlined cap with slots is formed on the body, covering the inlet.  6. A thread made in the opening of the receiving tank of the filter for water purification and / or on the filter cartridge, characterized in that it has a non-standard profile, which is based on an equal-sized trapezoid with a large base equal to 1.4 - 2.0 mm, and a smaller base, curved mainly along an arc of a circle with a radius of (0.5 ± 0.1) mm.  7. The thread according to claim 6, characterized in that it is made of a two-start diameter (40.0 ± 0.5) mm and an axis distance between adjacent turns (2.6 ± 0.1) mm.

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