DE29623117U1 - Leaf separator - Google Patents

Description

4643 Oil 15.01.1996 (WP 96/3)

LEAF SEPARATOR
TECHNICAL PART

The present invention relates to a device for separating impurities such as leaves, pine needles, etc. from a water flow in a rainwater downpipe and consists partly of a channel part with upper and lower connections to an upper rainwater downpipe or to a lower rainwater downpipe or a rainwater drain, partly of a laterally directed discharge which is limited by a lower wall, opposite side walls and an upper wall, the lower wall rising obliquely upwards from the side of the center of the channel part, and partly of a grid which closes at least the majority of the cross-section and which connects with its lower end to the outer region of the lower wall of the discharge.

STATE OF THE ART

A separation device of the type described in the introduction is already known from WO 9514832.

This patent application describes a separation device which has a channel part and a sideways discharge, and in which the upper boundary wall of the discharge slopes laterally from the center of the channel part. In this type of design, the grid is manufactured as a separate unit which is subsequently mounted.

According to the publication mentioned, the channel part and the ejection cannot be efficiently manufactured in a single piece

but rather they must be manufactured as two individual parts that are subsequently assembled. This means that the separation device according to WO 95514832 is expensive and complicated to manufacture and requires complex assembly work.

The sloping upper boundary wall of the discharge makes visual inspection of the grid difficult. In addition, due to the size and direction of the upper boundary wall, the grid arranged in the channel section is difficult to access should cleaning become necessary.

PROBLEM STATEMENT

The present invention aims to achieve the device indicated in the introduction, which is designed in such a way that the disadvantages of previously known constructions are eliminated. In particular, the invention provides a device that can be manufactured simply and efficiently without subsequent complicated assembly operations. In particular, the invention provides a device that can be manufactured in a single piece in an automatic machine. In addition, the invention provides a device in which the visual inspection of the grid and its cleaning are facilitated.

TROUBLESHOOTING

The aim underlying the invention is achieved if the device described in the introduction is characterized in that the channel part and the ejection are made in one piece and that the upper wall of the ejection has an upward inclination angle which is exactly as large as or larger than the inclination angle of the lower wall.

These characteristics bring the great advantage that the grille is largely freely visible from above and easily

is accessible. Furthermore, it is possible to
The object of the invention can be produced very efficiently by injection molding in a single piece.

Further advantages are achieved if the subject of the
Invention one or more characteristics according to the
Patent claims 2-6.

LAYOUT OF DRAWINGS

The invention will now be described in more detail with reference to the accompanying drawings.

Fig. 1· Schematic representation of a vertical

Side view of the subject matter of the invention;

Fig. 2 Approximately diametrical vertical section through the
Subject of the invention.

Number 1 in Fig.l refers to a channel part 1 which has a basic shape which predominantly has a circular cylindrical
cross-section with the central axis approximately vertical in the application position. The channel part 1 has at its upper
End a connector 2 for connection to an upper
Rainwater downpipe. At the lower end, channel section 1 has a
lower connection 3 for connection to a lower
Rainwater downpipe or a rainwater drain. The channel part 1
is provided with a side-facing ejection outlet 4, which can be described as a short channel piece, nozzle or the like. This provides a lateral connection to the interior
of the channel part 1, so that impurities such as leaves,
Pine needles etc. that fall down through the downpipe, are separated and migrate or are thrown out sideways
can be.

The ejection 4 is limited at the bottom by a predominantly flat wall, which is connected at its side edges to the opposite side walls 6 and 7 of the ejection. The ejection 4 is limited at the top by an upper wall 8, which can be flat or, for example, curved in a semicircle, and which is connected to the side walls 6 and 7.

Inside the channel part 1 there is a diagonally arranged grid 9, the lower end of which ends in the area of the outer edge of the lower wall 5. The grid 9, which covers most of the cross-section of the channel 1, consists of several upright slats 10, which are parallel to each other and to a vertical diameter plane of the channel part 1. The slats 10 are connected to each other by horizontal or transverse ribs 11, with the upper edges of the ribs being flush with or lying below the upper edges of the slats 10. As a result, the top of the grid 9 has no transverse elevations that could possibly prevent the contaminants from sliding along the grid and out through the discharge 4.

The grid 9 merges at its upper end into a shield wall section 12, which is manufactured in one piece with the channel part 1 and the grid 9. The shield wall section has a steep incline, approx. 30° to the vertical, and covers the smaller part of the cross section of the channel part on the side facing away from the discharge 4. The remaining part of the cross section of the channel part is covered by the grid 9 so that no contaminants, or at least no larger contaminants, can pass through the channel part 1.

The slats 10 present in the grid 9 end at some distance inside the outer edge of the lower wall 5 of the ejection 4.

·♦ *

To ensure that the water flowing along the grid 9 at an angle downwards and towards the opening of the discharge 4 does not run out, the lower wall 5 of the opening slopes upwards from the middle of the channel part 1. As a result, the water flowing along the grid and reaching the outer end area of the lower wall 5 will hit this wall and be directed back into the interior of the channel part 1. The angle of inclination of the lower wall is marked with α in Fig. 2.

The upper wall 9 of the discharge 4 also slopes upwards from the interior of the channel part and towards the outer end of the discharge. In Fig. 2 the angle of inclination is indicated by β . Preferably the inclination of the upper wall is equal to or slightly greater than the inclination of the lower wall 5 and thus β a a.

The lower section of the channel part 1, i.e. the part below the grid 9, is uniformly thick or converges slightly in the direction from bottom to top, up to the grid 9. Accordingly, the upper section of the channel part 1, i.e. the section located above the grid 9, is uniformly thick or converges slightly from top to bottom.

From Fig. 2 it can be seen that the slats 10 contained in the grid 9 have approximately triangular sections on the upper side of the lower wall 5 of the discharge 4. These sections have inner boundary edges 16 which are designed as upwardly directed continuations of the inner boundary surface of the channel part 1 directly below the wall 5.

The sections of the channel part 1 above and below the grille 9 are shaped in such a way that it is possible to insert a solid body from below into the channel part up to the grille and connect it to it. Accordingly, it should be possible to insert a solid body into the upper section up to the grille

down. In both cases, the solid body should fill the inner space of the canal part.

The shape of the ejection 4, in particular the inclination of the upper wall 8, also makes it possible to introduce a solid body through the ejection 4 up to the grid 9 and also to shape this solid body in such a way that it completely fills the cavity.

Due to the above-described shaping of the object of the invention, it is possible to produce it in a single piece by injection molding.

In order to make the object of the invention compatible with at least two different diameters of the upper downpipe, the upper section of the channel part 1 can be provided with two or more guide springs 13 extending in the longitudinal direction of the channel part. If the upper downpipe has a small diameter, it can rest against the inner edges 14 of the said guide springs 13 and be held thereby.

In the upper area of the guide springs 13, recesses 15 are arranged between the inside of the channel part 1 and the guide spring. These recesses serve to accommodate the lower end section of a thicker rainwater downpipe.

The invention may be modified within the scope of the following claims.

Claims (6)

EXPECTATIONS 1. Device for separating impurities such as leaves, pine needles, etc. from a water flow in a rainwater downpipe, consisting partly of a channel part (1) with upper (2) and lower (3) connections to an upper rainwater downpipe, or to a lower rainwater downpipe or a rainwater drain, and partly of a laterally directed discharge (4) which is formed by a lower wall (5), opposite side walls (6, 7) and an upper wall (8), the lower wall rising obliquely upwards from the side of the channel part (1), and partly from a grid (9) which closes at least the majority of the cross-section of the channel part (1) and connects with its lower end to the outer region of the lower wall (5) of the ejection (4), characterized in that the channel part (1) and the ejection (4) are made in one piece and that the upper wall (8) of the ejection (4) has an upward inclination angle β which is equal to or greater than the upward inclination angle α of the lower wall (5). 2. Device according to claim 1, characterized in that the side walls (6, 7) of the ejector (4) are predominantly parallel to one another. 3. Device according to claim 1, characterized in that the side walls of the ejection (4) diverge laterally from the center of the channel part (1). 4. Device according to one of claims 1 - 3, characterized in that a lower section of the channel part (1) is uniformly thick or slightly converges from bottom to top towards the grid (9). 5. Device according to one of claims 1 - 4, characterized in that an upper section of the channel part �Mgr;.�Lgr;�Lgr; �Lgr;�Lgr;�Lgr; ··» »* ** * (1) is uniformly thick or slightly converges from top to bottom towards the grid (9). 6. Device according to one of claims 1-5, characterized in that the channel part (1), the grid (9) and the ejector (4) are made in one piece.