DE102020111449A1 - Replaceable drain strainer - Google Patents

Abstract

A drainage strainer comprising a grid made of a flexible material, the individual grid bars being 0.5 mm - 1.5 mm wide and the grid having a through hole in the middle.

Description

Field of invention

The invention relates to an exchangeable strainer for a drain of a sink, shower or bathroom for domestic use.

State of the art

Sinks and drains become clogged easily, in the case of shower and bathing devices in particular through human hair that attaches to projections and the like. In order to avoid these blockages there are commercially available sieves, mostly made of metal, which must be placed over the drain and cleaned regularly. However, cleaning these sieves is comparatively time-consuming or, depending on the frequency of cleaning, the sieves are not particularly hygienic.

Presentation of the invention

The object of the invention is to provide a drainage strainer which enables the trapped dirt to be removed in a simple and uncomplicated manner.

This object is achieved by a drainage strainer according to claim 1. Further features which design the invention are contained in the dependent claims.

A drain strainer according to the invention comprises a grid made of a flexible material, the individual bars being 0.5 mm-1.5 mm wide and the grid having a through hole in the middle. Such a sieve helps to avoid clogging in the drain and makes cleaning easier, because the sieve can easily be replaced, while the drain cannot be blocked during use and the drain can still be closed with a plug. The flexible material can be a plastic such as PVC, the main thing is that the strainer can be pushed into the drain. However, the flexible material is preferably biodegradable and / or compostable. For example, the drain strainer can be made of hemp, wood or another biodegradable material. This means that disposal can be carried out in an environmentally friendly manner and does not have to be done with household waste.

A circumferential ring is preferably formed on the inner edge and / or on the outer edge. These rings stabilize the drainage strainer.

The grid holes preferably have a maximum diameter of 6 mm or less, in particular 4 mm or less, and a minimum diameter of 2 mm, preferably 3 mm. This diameter allows the water to flow through unhindered, but the mesh is tight enough to hold back hair, leftover food or other residues.

The drainage strainer preferably has a maximum thickness of 1 mm, in particular 0.8 mm, and is at least 0.5 mm thick.

The drainage strainer is preferably designed to be essentially circular. As a result, there are fewer gaps between the sieve and the drainpipe on the outer edges, so that all materials that end up in the drain are caught.

The through hole has in particular a diameter of 7.5 mm to 8.5 mm.

Optionally, the drainage strainer has at least one pulling element on which the drainage strainer can be pulled out of a drain. This makes it easier to remove the sieve.

Radially inwardly projecting projections are preferably provided on the through hole. These hold the drainage strainer on the stopper if this is designed with a pin.

Furthermore, two intersecting slots, in particular two slots running perpendicular to one another, can be provided, so that a slot cross is formed starting from the through hole. This means that the drain strainer can also be combined with a wing stopper.

Figure list

• 1 Figure 3 shows a basic version of a drain strainer according to the present invention;
• 2 Figure 3 shows a version of a drain strainer with an inner and an outer ring; and
• 3 Figure 12 shows a version of a drain strainer with protrusions on the inner ring.

Description of the preferred embodiments

In 1 a basic version of a drain strainer according to the invention is shown. The basic version of a drain strainer 10 has a grid 12th on that here is formed from intersecting rods. In the embodiment in 1 the grid forms a plurality of square through holes. However, the grid can also have other shapes, for example diamond-shaped, rectangular or even round holes, in which the grid is formed by punching out the holes in a corresponding film, mesh or fabric. In general, the grille must have through holes through which water can drain and at the same time catch the material that should not end up in the drain. There is a through hole in a central area 11 provided through which a drain plug can be inserted. In this way, the drain strainer can be combined with a drain plug. In order to also make wing plugs combinable, a slotted cross can be provided in the grille (see dashed lines in 1 ). The slots extend from the through hole 11 starting to the edge of the grid. You can, so to speak, be viewed as two mutually perpendicular slots that go through the through hole 11 to run.

The grid 10 is preferably circular, but other shapes are also conceivable, for example a square, rectangular or other polygonal shape in which the corners bend upwards when the grille is pushed in, but there must not be too much space between the drain and the grille (less than 5 mm).

As in 2 can be shown on the outer edge of the grille 12th a reinforcement 14th be designed, for example as a flat ring or as a bead-shaped border. Reinforcement can also be used on the inside 16 be provided. The reinforcement 16 at the through hole 11 can also have protrusions 18th that improve the hold on a stopper (see 3 ).

A tension element can also be used 20th be attached to the grid, for example as a simple extension of a lattice bar of the grid. Since the grille is made of a flexible material, the extension can bend upwards and be easily grasped by hand at the drain inlet. So the drain strainer can other pulling elements 20th but are also conceivable, for example an upwardly protruding rod-shaped projection on the outer ring 14th is trained.

The material should be flexible so that deviations in the exact dimensions of the drainage through the drainage screen can be compensated for. Suitable materials are, for example, various plastics such as PVC, but also biodegradable materials such as hemp or wood or suitable types of cardboard or paper.

The grid is preferably 0.5-1 mm thick, preferably a maximum of 0.8 mm thick. The individual bars are 0.5 mm - 1.5 mm thick, more preferably a maximum of 1 mm or even only 0.8 mm thick. The outside diameter can vary depending on the dimensions of the drain on which the strainer is to be used. For example, the outside diameter can be adapted to an Austrian or German standard and accordingly have a diameter of 4-5 cm

In use, the plug, if one is present, is first removed from the drain. Then the drain strainer becomes 10 pressed into the drain so that the sieve completely covers the diameter of the drain. The sieve can only be pushed in slightly or deeper. Then the drain is covered with the stopper again, with the rod of the stopper in the through hole 11 is inserted, preferably without pushing the drain strainer further into the drain. Depending on the amount of materials that end up in the drain, the sieve can then be removed in the household waste or in compost after a few days or only after one or more weeks.

List of reference symbols

10

Drain strainer

11

Through hole

12th

Grid

14th

Reinforcement

16

Reinforcement

18th

head Start

20th

Tension element

Claims (10)

Drainage strainer (10), comprising a grid (12) made of a flexible material, the individual grid bars being 0.5 mm - 1.5 mm wide and the grid (12) having a through hole (11) in the middle. Drain strainer (10) Claim 1 where the flexible material is biodegradable. Drainage strainer (10) according to one of the preceding claims, in which a circumferential reinforcement (14, 16) is formed on the inner edge and / or on the outer edge. Drainage strainer (10) according to one of the preceding claims, in which the grid holes have a maximum diameter of 6 mm or less. Drainage strainer (10) according to one of the preceding claims, in which the drainage strainer (10) has a maximum thickness of 1 mm, in particular 0.8 mm Drainage strainer (10) according to one of the preceding claims, which is essentially circular. Drainage strainer (10) according to one of the preceding claims, in which the through hole (11) has a diameter of 7.5 mm to 8.5 mm. Drainage strainer (10) according to one of the preceding claims, further comprising at least one pulling element (20) on which the drainage strainer can be pulled out of a drain. Drainage strainer (10) according to one of the preceding claims, in which projections (18) projecting radially inward are provided on the through hole (11). Drainage strainer (10) according to one of the preceding claims, in which two or more intersecting slots are provided so that at least one slot cross is formed starting from the through hole (11).

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