DE29604299U1 - water-tank - Google Patents

Description

WESTPHAL · MUSSGNUG &; PARTNER

PATENT ATTORNEYS· EUROPEAN PATENT ATTORNEYS

times 034

Mall-Concrete GmbH
Hüfinger Strasse 39-45
7 8166 Donaueschingen

water-tank

The invention relates to a water reservoir according to the preamble of claim 1. . ·

Water tanks of this type are used to collect water, especially rainwater, in order to store it for later use. The water is usually filtered before being fed into the water tank in order to remove dirt particles from the water. From DE 43 07 066 A1 it is known to provide an additional filter device in the water tank itself in order to filter even fine dirt particles from the stored water. For this purpose, a carrier plate is provided on the open top of the container in which the water is collected, which has openings through which the water enters the container. Removable filter plates are inserted into the openings.

The invention is based on the object of reducing the manufacturing and installation costs of such a water storage tank.

Westphal · Mussgnug & Partner

u,.j.,.,^ _Q -3-3 . Tdofnn +7791 5&bgr;&Pgr;&Ggr;)7 · Telefax +7721 55614

• ·

This object is achieved according to the invention by a water reservoir with the features specified in the claims.

The water reservoir according to the invention uses a particularly simple, inexpensive and effective filter device. This consists of a basket that can be placed on an opening in the carrier plate and closes off this opening at its edge. The underside of the basket, which sits on the opening in the carrier plate, is open. The side walls of the basket have passage areas that are covered by a flat filter material. The water flowing in above the carrier plate collects on the carrier plate and passes through the filter material of the side walls of the basket, thus reaching the container through the opening in the carrier plate.

If the filter material is clogged with the dirt that has been filtered out, the basket can be easily lifted off the support plate using a handle, for example, to replace or rinse the filter material. The filter material can be selected according to the desired filter fineness. A stainless steel mesh can be used, which has the advantage of a long service life, but is limited in terms of filter fineness. If a higher filter fineness is desired, a textile fabric, preferably a plastic fabric, is used as the filter material. An even higher filter fineness can be achieved with a filter fleece. Such a filter fleece also retains very fine particles, such as flower pollen.

The filter material can be an integral part of the basket or be firmly attached to the basket.

Preferably, the filter material is placed in the form of a sleeve around the basket and spans the cylindrical surface

of the basket. This design is particularly suitable for a replaceable filter material, for example a fabric or fleece. The basket is made of a corrosion-resistant material, preferably stainless steel or plastic. The outer surface of the basket is formed by a grid or a perforated surface of this material.

It is also possible to design the basket with a partially closed bottom. This allows the basket to be filled with loose filter material, e.g. clay granules or the like, through which the water to be filtered passes. If the basket volume is not sufficient, the basket can be enlarged and arranged so that it partially protrudes downwards through the carrier plate.

In addition, the opening in the support plate under the basket can be closed by a hanging tray that is provided with sieve-like openings. This sieve-like tray has the advantage that the water that enters the container through the filter device trickles down into the container over the water surface, like a watering can. This advantageously enriches the water collected in the container with oxygen. The tray also catches dirt that can fall down when the basket is removed, so that these dirt cannot get into the stored water.

The tank and the support plate are preferably cast concrete prefabricated parts. Since the water tank is usually installed sunk into the ground, the water tank is preferably closed at the top by a shaft cone. To simplify the installation of the water tank on site, the shaft cone has prefabricated openings into which the inlets and feeders can be inserted. The support plate can also have prefabricated openings for an overflow or for feeders of clean water.

water or supply lines. These prefabricated ducts also allow the pipes or supply lines to be easily inserted.

Preferably, elastomer seals are provided between the upper edge of the tank and the support plate resting on this edge, and also between the support plate and the shaft cone resting on this support plate. This means that the water tank can be installed on site without the need for additional concreting work. The elastomer seals also ensure reliable sealing.

In the following, the invention is explained in more detail using an embodiment shown in the drawing.

Show it:

Figure 1 shows a vertical section of the water reservoir along the line I-I in Figure 3,

Figure 2 shows a vertical section of the water reservoir according to the section line II-II in Figure 3 and

Figure 3 is a plan view of the support plate of the water tank.

The water storage tank shown is preferably installed sunk into the ground.

The water reservoir has a container 1, which is made of concrete or reinforced concrete in a circular design. Preferably, the container is made in one casting as a monolithic shaft. It is also possible to create the container 1 in a conventional shaft ring design. The container

1 is closed at its bottom and side walls and open at its top.

A support plate 5 made of concrete, reinforced concrete, fiber concrete or a corresponding material is placed on the upper edge 3 of the container 1. A circumferential groove is formed in the edge 3, into which an elastomer seal is inserted, which creates a seal between the container 1 and the support plate 5.

A shaft cone 15, which is also cast from concrete or reinforced concrete, is placed on the carrier plate 5. A groove is also formed in the top edge 6 of the carrier plate 5, which accommodates an elastomer seal in order to create a seal between the carrier plate 5 and the shaft cone 15.

A screw anchor 4 is cast into the edge 3 of the container 1 at three points evenly distributed around the circumference, which protrudes axially upwards from the edge 3. The screw anchors 4 can be used for transporting the container 1. When assembling the water tank, the support plate 5 and the shaft cone 15 are each placed on the screw anchors 4 with correspondingly recessed sleeves 8 and a nut placed on top of the screw anchor 4 is used to screw the container 1, support plate 5 and shaft cone 15 together.

The carrier plate 5 has an opening 22 in the middle, which is composed of a semicircle with a smaller radius and a semicircle with a larger radius. The semicircle with a larger radius enables the opening 22 to be used as a manhole for inspection and repair work inside the container. 1. An insert ring 7 is inserted into the semicircle with a larger radius of the opening 22 and reduces the

Cross-section of the opening 22 to a full circle with the smaller radius.

A flat circular tray 12 made of rust-proof metal or plastic is suspended in an edge fold of the central circular opening 22 that remains after the insert ring 7 has been inserted. The tray 12 has a sieve-like surface with a large number of small openings. A rod 25 projecting upwards is inserted in the middle of the tray 12, which enables the tray 12 to be removed and inserted from above through the access hole 21 of the shaft cone 15.

A filter basket 13 is placed on the tray 12 in the edge fold of the opening 22. The filter basket 13 consists of a grid made of stainless steel wire in the form of a right circular cylinder, which is open at the top and bottom. The lower edge of the filter basket 13 sits on the edge fold of the opening 22 and is sealed against the carrier plate 5 by means of an elastomer seal. A handle 14 is attached to the top of the filter basket 13, which enables the filter basket 13 to be lifted out and inserted through the access hole 21 of the shaft cone 15.

A sleeve 23 made of a flat filter material is stretched onto the cylindrical outer casing of the filter basket 13. The sleeve 23 consists of a stainless steel mesh, a textile mesh, preferably a plastic mesh or a nonwoven material. The sleeve 23 is preferably replaceable.

Brackets 24 are cast onto the outside circumference of the shaft cone 15. The brackets 24 accommodate passages. As Figure 1 shows, a plastic sleeve 16 is cast into one of the brackets 24, through which an inlet pipe 20 can be inserted. The inlet pipe 20 opens into the interior of the

Shaft cone 15 above the carrier plate 5. The collected rainwater is fed to the water tank via the inlet pipe 2 0. The water fed in via the inlet pipe 2 0 collects on the carrier plate 5 and passes through the filter material of the sleeve 23 and trickles through the sieve-like perforated tray 12 into the container 1.

An overflow is provided to prevent rainwater from overflowing the upper edge of the sleeve 23 of the filter basket 13 and entering the container 1 unfiltered. For this purpose, an opening 9 with a plastic sleeve is incorporated into the carrier plate 5 at the factory. An overflow pipe 26 is inserted into this opening 9, which extends above the carrier plate 5 up to just below the upper edge of the sleeve 23. The overflow pipe 26 leads outwards below the carrier plate 5 via a siphon 11 through an opening 2 prefabricated in the side wall of the container 1. An elastomer seal seals the pipe in the opening 2.

Furthermore, three openings 10 are provided in the support plate 5. These openings 10 correspond to brackets 24 of the shaft cone 15. - Pipe sections 17 are concreted into the brackets 24. Pre-assembled pipes 19 can be passed through these pipe sections 17, which then lead through the respective opening 10 of the support plate 5 into the container 1. The pipes 19 are each sealed by plastic or rubber sealing elements 18 in the pipe section 17 or the opening 10. The pipes 19 are used to draw water from the container 1. Furthermore, pipes 19 can be provided to feed drinking water into the container 1 or to lead electrical cables into the container 1. Unused pipe sections 17 and openings 10 can be closed with appropriate blind plugs.

Claims (14)

♦ ··· &phgr; 4 WESTPHAL · MUSSGNÜG *&dgr;&igr;; PÄftTfslER PATENTANWÄLTE ■ EUROPEAN PATENT ATTORNEYS times 034 PROTECTION CLAIMS 1. Water reservoir, with a container for collecting and storing the water, with a carrier plate spanning the container on its open top, with an opening in the carrier plate into which a removable filter device can be inserted, and with at least one inlet opening above the carrier plate, characterized in that the filter device has a basket (13) which can be placed on the opening (22) in the carrier plate (5) and which has passage surfaces provided with filter material (23) at least on its side walls. 2. Water reservoir according to claim 1, characterized in that the filter material (23) is a flat material covering the passage surfaces. 3. Water reservoir according to claim 2, characterized in that the basket (13) consists of a cylindrical wire mesh or a perforated sheet or plastic material, onto which a sleeve (23) made of the filter material is clamped. 4. Water reservoir according to claim 2 or 3, characterized in that the filter material (23) is a stainless steel fabric, a textile fabric, in particular a plastic fabric or a filter fleece, which is arranged in one or more layers, optionally also in a combination of different materials. D-78048 VS-Villingen · Waldstrasse 33 · Telephone +7721 56007 · Fax +7721 55614 5. Water reservoir according to claim 1, characterized in that the basket (13) can be filled at least partially with a pourable filter material which covers the area of the passage surfaces. 6. Water reservoir according to one of claims 1 to 5, characterized in that the basket (13) with a seal is seated in an edge fold of the opening (22) of the carrier plate (5). 7. Water reservoir according to one of claims 1 to 6, characterized in that a trough (12) can be inserted into the opening (22) of the carrier plate (5) under the basket (13), the bottom surface of which is provided with small openings in the manner of a sieve. 8. Water reservoir according to claim 7, characterized in that the tub (12) consists of rust-proof metal or plastic. 9. Water reservoir according to one of claims 1 to 8, characterized in that the opening (22) of the carrier plate (5) has a cross-section which is widened to form a manhole and which is reduced in size by an insert ring (7). 10. Water reservoir with a container for collecting and storing the water, with a carrier plate spanning the container on its open top, with an opening in the carrier plate into which a removable filter device can be inserted, and with at least one inlet opening above the carrier plate, characterized in that the at least one inlet (20) can be inserted through a prefabricated passage (16) in an attachable shaft cone (15). • » · ■ 11. Water storage tank according to claim 10, characterized in that an overflow pipe (26) can be inserted through a prefabricated opening (9) in the support plate (5) and is designed to be inserted through a prefabricated opening (2) laterally in the wall of the container (1). 12. Water reservoir according to claim 10 or 11, characterized in that prefabricated passages (17) for lines (19) are provided in the shaft cone (15), each of which is assigned openings (10) in the carrier plate (5). 13. Water reservoir according to one of claims 10 to 12, characterized in that the carrier plate (5) can be placed on the edge (3) of the container (1), that the shaft cone (15) can be placed on the edge (6) of the carrier plate (5) and that the container (1), the carrier plate (5) and the shaft cone (15) can be screwed together by means of screw anchors (4) cast into the edge (3) of the container (12). 14. Water reservoir according to claim 13, characterized in that elastomer seals are inserted between the edge (3) of the container (1) and the carrier plate (5) and between the carrier plate (5) and the shaft cone (15).