DE2055148A1 - Device for preventing the clogging of drainage pipes for surface water - Google Patents

Description

Device for preventing the clogging of surface water drains

The present invention relates to a device for prevention the clogging of drainage lines for surface water by leaves, pine needles, twigs and the like., The through a drainage pipe for rainwater to get into the sewer system.

Various means are known for this purpose, e.g. of the pipe is arranged. The disadvantage of the former device is that it is not tested from the ground and that it only becomes apparent that the drainpipe is clogged and must therefore be cleaned when rainwater comes on the side begins to flow over the gutter. In many cases, a ladder is also needed for this purpose, as the strainer is arranged at the eaves. As far as the latter type is concerned, in which the strainer is placed inside the drain pipe a unification as with the previous type is indicated by the overflow of the gutter. In such a In case, a part of the drainpipe must be raised sufficiently, to make the sieve accessible for the purpose of cleaning. It is obvious a disadvantage that the facility only acts as a warning sign when it rains, as the owners of the houses

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do not stay outside at such times.

The above-mentioned drawbacks are completely eliminated by the device of the invention. The device consists of one upwardly open funnel which receives the lower end of the drain pipe and whose lower part is connected to the drain pipe is. At least in one direction a part of the funnel extends so far outside of the drainpipe that one can reach with one hand a host located just above the hopper bottom, and in this way the hopper can clean.

It has been found beneficial to have the host in a sloping position Position against the longitudinal direction of the drainpipe and therefore inclined against the part of the funnel that is outside of said drill extends. The advantage gained thereby lies in the fact that it is easier to remove the leaves and twigs and that the free area of the east is not so either is easily clogged again. It has also been found that in this position the funnel has to some extent a has a self-cleaning effect, since in the case of heavy showering, i.e. when large volumes of water come down, the leaves are thrown out of the funnel. Another advantage, which is gained by the inclination is that the total area of the host perforation can be made large in relation to the cross-sectional area of the drain pipe.

The invention will be further illustrated by a pair of representative embodiments in conjunction with the accompanying drawings; show it:

Fig. 1 is a longitudinal section of a funnel of the invention. _{; T}

Fig. 2 is a section on the line I-I of

n _s . 1

3 shows a longitudinal section of another embodiment

Fig. 4 finally shows a section on the Line II-II of FIG. 3

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In Fig. 1 and 2, 11 denotes a downpipe. This ends in a funnel 12 which is open at the top and which is partially perforated and thus forms a kind of grate 13, the funnel removes a protruding one Part 14-, which is so far outside the downpipe 11 extends so that a normal hand can reach the host and so be able to remove any build-up of digested sludge released by the rainwater is filtered off on its passage through the funnel and sieve. By means of a tail 15, the funnel is connected to a tube 16, which is either a continuation of the downpipe 11 or optionally a cast iron or concrete pipe can be according to the height at which the Funnel is arranged on the downpipe. It turned out to be the _ proved to be part of the funnel in a comparatively low- ™ at the right height, as this facilitates control. It is customary to use sheet metal or downspouts at foundation level Plastics go over to cast iron or concrete, which then connected to the sewer system. It is preferred to be at this transition point in the pipeline system to attach a funnel according to the invention. The downpipe is held in the funnel by sliding it into a recess or groove 17 in the head portion of the funnel. An additional Groove 18 enables the funnel to be used in conjunction with a smaller diameter downpipe. The fastening shown igun £ s arrangement is obviously not the only possible but can be modified in many ways. The grate perforation should preferably have the largest possible area, and it is desirable that this area be as large as that Cross-sectional area of the downpipe. By moving the grate lengthways If the pipe is inclined, there is every possibility of meeting this requirement.

Fig. 5 and 4 lines show a slightly different embodiment of the Invention. The difference between this embodiment and that described above lies primarily in the arrangement of the grate. In this case the grate is a separate part, thus not integral with the funnel as in the case of the funnel according to FIGS. 1 and 2. It is correct that the funnel is somewhat becomes more complicated, but there is gained the advantage that

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the east has a larger surface area and, consequently, a broader one Perforation area. Any digested sludge that is caught by the grate will be carried further out by the Hegen water led into the protruding part 24 of the funnel and is thus more easily accessible when cleaning. In this embodiment, the downpipe 21 is 2 thirds of its circumference through the Funnel 22 enclosed and therefore firmly connected to the same. There are no further differences in other respects, and via an intermediate pipe end 25, the funnel is by means of a pipe section 26 connected to the sewer system.

A funnel according to the invention is preferably made of plastic, such as FVG, HD polythene or polypropene. It is also possible, the foolproof made of pressed sheet metal or by die casting to manufacture. However, plastic funnels are preferred for some reasons. If the downpipe or the pipe 16 or 26 are made of metal, there is no risk of any galvanic process and the resulting corrosion problems when plastic funnel can be used. In addition, a funnel is made of plastic - even if it is in 2 parts, as shown in FIGS. 3 and 4 is made - cheaper than if the funnel is made of metal.

If necessary, a funnel according to the invention with a Cap "covering the part of the funnel that goes over the Downpipe protrudes, covers.

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Claims (5)

2055U8 - 5 - Claims (ΐΓ) Device to prevent clogging of drain lines for surface water from fallen leaves, second and the like. Which reach the sewer pipe through a downpipe consisting of an upwardly open funnel which forms the opening of the downpipe with its lower part connected to the sewer system, in which case said funnel partially protrudes beyond the downpipe, characterized in that the upward facing free surface (14, 24) of the funnel (12, 22) has such shape and dimensions that a host (15? 23} which is arranged in the lower part of the funnel, is accessible by hand from above for the purpose of access. 2. Apparatus according to claim 1, characterized in that the grate (13, 23) obliquely against the longitudinal direction of the downpipe (11, 21) is arranged and that it is inclined downwards against the part of the funnel which extends outside the downpipe is. 3. Apparatus according to claim 2, characterized in that the Total area of the food perforation (13 »23) is greater than half tyuschnittsfläche the downpipe (11, 21). 4. Apparatus according to claim 3? characterized in that the The total area of the host perforation (13 »23) is practically as large as the cross-sectional area of the downpipe (11, 21). 5. Device according to one of the preceding claims, characterized in that a cap for covering the upwardly open part (14, 24) of the funnel (12, 2.2) is provided, which is outside the downpipe. • TO 9822/1237