RU40907U1 - FILTER FOR THIN LIQUID CLEANING - Google Patents

Abstract

1. The filter for fine cleaning of the liquid containing a separation and drainage element with a corrugated surface located inside the cavity formed by the track membranes, an outlet pipe connecting the cavity formed by the track membranes with the environment, characterized in that the filter is additionally equipped with at least one a pair of inner frames and one pair of outer frames, a perimeter separation and drainage element is fixed between two inner frames, and track membranes are located on both sides of the separation a drainage element and are hermetically connected to each other and the internal frames using a pair of external frames, while the separation and drainage element, track membranes, internal and external frames are placed inside a cover having a slit for fluid intake and an opening for the passage of the outlet pipe. 2. The filter according to claim 1, characterized in that the inner surface of the cover is made corrugated. The filter according to claim 1, characterized in that on the opposite side of the hole for the passage of the outlet pipe on the inner surface of the cover there is at least one thickening made of soft material, for example foam rubber.

Description

The invention relates to devices for the fine purification of liquids, in particular water, from suspensions, bacteria, viruses and chemical compounds dissolved in water.

A well-known household filter "Rodnik-ZM flow type" produced in accordance with TU 6-16-22-91-87. (RF patent for the invention No. 2145943, IPC 7 C 02 F 9/00, 01 D 29/56, 61/00, Bulletin of inventions No. 6, 2000). Water purification in it is carried out due to the presence of a filter element filled with activated carbon impregnated with silver.

The disadvantages of the filter are the relatively high hydraulic resistance of the filter element, the relatively low quality of the filter due to the use of activated carbon as a filter element, which has channels of unregulated size passing through the liquid.

The closest in technical essence to the claimed solution is a household filter for fine water purification (RF patent for the invention No. 2145943, IPC 7 C 02 F 9/00, 01 D 29/56, 61/00, Bulletin of inventions No. 6, 2000 ) The filter contains a housing closed by covers with intake openings, a hose for draining filtered water, prefilters and filter elements located between the housing and the covers. The filter elements are made of a polymer film with a thickness of 9.0-11.0 microns, having through holes with a diameter of 0.2-0.4 microns. The surface of the housing is corrugated, and the collector for collecting the filtrate is formed by this surface and the surface of the filter element. The pressure drop across the polymer film is created due to the difference in the height of the liquid level in the container with the original liquid into which the filter is immersed, and the cut-off of the water gate in the receiving container.

The disadvantages of the filter are:

- relatively high manufacturing complexity;

- relatively large overall dimensions;

- the relatively high complexity of the regeneration of filter elements;

- use in the manufacture of relatively expensive equipment and materials.

To eliminate these drawbacks in the filter for fine liquid purification, containing a separation and drainage element with a corrugated surface located inside the cavity formed by the track membranes, the outlet pipe connecting the cavity formed by the track membranes with the environment, it is proposed:

- the filter is additionally provided with at least one pair of inner and one pair of outer frames;

- fix the separation and drainage element along the perimeter between two internal frames;

- track membranes located on both sides of the separation and drainage element, tightly connected to each other and the internal frames using a pair of external frames, with a separation and drainage element placed between them;

- Separation and drainage element, track membranes, internal and external frames should be placed inside a cover having a slot for liquid intake and an opening for the passage of the outlet pipe.

In particular cases of filter execution it is proposed:

- make the inner surface of the cover corrugated,

- on the inner surface of the cover from the side opposite from the opening for the passage of the outlet pipe to produce at least one thickening of soft material, for example, foam rubber.

The invention is illustrated by graphic materials, where in Fig.1 and Fig.2 shows the design of the filter, respectively, in disassembled and assembled conditions, and in Fig.3 a diagram of the use of the filter when filtering liquid.

Figure 1-3 adopted the following notation:

1 - inner frame; 2 - outlet pipe; 3 - capacity for collecting filtrate; 4 - intake tank with filtered fluid; 5 - the outer surface of the track membrane; 6 - outer frame; 7 - hole for the passage of the outlet pipe; 8 -

separation and drainage element; 9 - a drain hose; 10 - track membrane; 11 - thickening of soft material; 12 - case; 13 - slot for fluid intake.

In the filter, track membranes 10 are used as filter material.

The separation and drainage element 8 is placed inside the cavity formed by the track membranes 10 and serves to distance them from each other.

The cavity formed by the track membranes 10 is in communication with the environment through the outlet pipe 1.

Each track membrane 10 is placed between the inner 2 and outer 3 frames.

The separation and drainage element 8 is fixed around the perimeter between the two inner frames 2. The inner 1 and outer 6 frames are hermetically connected to each other and track membranes 10.

The outlet pipe 2 is designed to drain the filtrate and is sealed simultaneously with the track membranes 10 and the inner 1 and outer 6 frames.

The separation and drainage element 8, track membranes 10, inner 1 and outer 6 frames, are placed inside the cover 12 having a slit for fluid intake 13 and an opening for the passage of the outlet pipe 7.

In particular cases of the filter, the inner surface of the cover 12 is made corrugated. In addition, at least one thickening of soft material 11 is made on the inner surface of the cover 12.

The device operates as follows (see figure 3).

The filter is placed in an intake container with a filtered liquid 4, and its drain hose 9 is placed in the liquid so that only its end remains above the surface of the liquid. In this case, the liquid penetrates through the pores in the track membrane 10 and fills the inner cavity of the filter and that part of the drain hose 9, which is below the liquid level. After a sufficient time has elapsed for the filtrate to fill the inner cavity of the filter and the hose 9, the end of the hose 9 with a tightly covered hole is removed from the intake tank with the filter

liquid 4 and sinks into a container to collect the filtrate 3 below its height (H). After that, the filtrate through the flow part of the filter continuously enters the container to collect the filtrate 3 until the level in the liquid in the intake tank 4 drops below the level fluid sampling slots 13.

As the outer surface of the track membranes 5 becomes contaminated, the filtering properties of the filter are regenerated by washing it. To do this, it is enough, holding the filter under running water, remove and put on the cover 12 several times.

An example of a specific filter.

The filter for fine liquid purification has overall dimensions of 210x105x4 mm, for the volumetric flow rate of the filtrate in the range of 1-0.5 l / h.

A track membrane 10 is used as a filter element in the filter. Track membrane 10 is a porous material with through cylindrical pores, the number of pores is about 10 ⁴ per 1 cm ² , and their diameter is in the range of 0.2-0.4 microns.

Track membrane 10 is made on the basis of a polymer polyethylene terephthalate film of PET PET grade 10.0 ± 1.0 μm thick (GOST 24234-80) by irradiation with heavy ions in an accelerator followed by physicochemical treatment.

The separation and drainage element 8 is a 0.8 mm thick polyamide mesh, 180x80 mm in size, which is placed in the cavity formed by the track membranes 10. This cavity communicates with the environment through the outlet pipe 2, which is a polyethylene tube 6x0.5 mm in size and length 25 mm.

The inner 1 and outer 6 frames are made of polyethylene, which has a melting point lower than the melting temperature of the track membranes 10. The separation and drainage element 8 is located between the pair of inner frames 1, and the track membrane 10 is between the inner 1 and outer frames.

The outlet pipe 2 is located between the two inner frames 1.

The filter is sealed around the perimeter by melting under pressure

internal 1 and external 6 frames when compressing the entire package depicted in figure 1. In this case, the polyethylene penetrates into the pores of the membranes, forming a sealed one-piece connection.

The separation and drainage element 8, the inner 1 and outer 6 frames, track membranes 10 and the outlet pipe 2 after sealing are placed inside the cover 12, which is an elastic bag made of polyethylene.

In the case 12, a hole is made for the passage of the outlet pipe 7 and a slit for fluid intake 13.

On the inner surface of the cover 12 perform corrugation by applying a notch.

A thickening 11 is made on the inner surface of the cover along the edge of the slit for fluid intake by gluing a strip of foam rubber 0.5 mm thick and 15 mm wide. This thickening is intended for cleaning the surface of track membranes during washing the filter.

Using the invention allows:

-to simplify the filter manufacturing process;

-reduce weight and size characteristics;

-exclude the use of expensive equipment and materials in the manufacture of the filter;

- reduce the cost of the filter.

Filter mock-ups for fine fluid purification were made and tested. Their efficiency and effectiveness are shown.

Claims (3)

1. The filter for fine cleaning of the liquid containing a separation and drainage element with a corrugated surface located inside the cavity formed by the track membranes, an outlet pipe connecting the cavity formed by the track membranes with the environment, characterized in that the filter is additionally equipped with at least one a pair of inner frames and one pair of outer frames, a perimeter separation and drainage element is fixed between two inner frames, and track membranes are located on both sides of the separation a drainage element and are hermetically connected to each other and the internal frames using a pair of external frames, while the separation and drainage element, track membranes, internal and external frames are placed inside the cover having a slot for fluid intake and an opening for the passage of the outlet pipe. 2. The filter according to claim 1, characterized in that the inner surface of the cover is made corrugated. 3. The filter according to claim 1, characterized in that on the opposite side of the hole for the passage of the outlet pipe on the inner surface of the cover there is at least one thickening made of soft material, for example foam rubber.