CS196871B1 - Precast lower part of the sewerage entering shaft - Google Patents

Description

The invention relates to prefabricated lower parts of sewer inlet manholes in which shaft inserts can be incorporated.

The previously known prefabricated lower parts of sewer manholes consist of two parts - the vertical part and the bottom of the manhole. These shafts do not have the bottom shaped according to the direction of wastewater flow and the construction of the vertical part does not allow direct connection of different types of piping according to the material. With these shafts, the flow trough must be lined or monolithically executed, which results in a great increase in labor and the obligation to observe technological breaks. Manholes composed of two or more parts cannot safely prevent sewage from entering the surrounding area.

The above-mentioned drawbacks are eliminated by the prefabricated bottom part of the sewer inlet shaft according to the invention, which consists of a cylindrical or box-shaped body provided with a shaped bottom of the shaft. In the cylindrical or box body of the manhole there are concreted or glued manhole inserts for connecting the piping, which allow articulated connection with the manhole in the same way as in the sewerage route. The bottom of the shaft forms a single unit with the prefabricated bottom part of the sewer entrance shaft. By shaping the bottom in the production of the shaft, a smooth transition between the flow trough and the shaft insert is achieved and thus better hydraulic conditions.

The shaped bottom connected to the vertical part of the shaft will reduce the time of construction of the sewerage system, increase labor productivity, reduce the demands on qualified professions and reduce the seasonality of work. The shaft inserts built into the vertical walls will allow unification in the connection of piping throughout the triassic. An articulated joint formed between the shaft insert and the pipeline will eliminate damage to the pipeline.

Exemplary embodiments are shown in the accompanying drawings, wherein Figure 1 is an embodiment with a shaft insert for a straight pipe, Figure 2 is a section A-A of Figure 1, Figure 3 is a section Β-B 'of Figure 1, Fig. 4 is another embodiment for a straight pipe; Fig. 5 is a section C-C 'of Fig. 4; Fig. 6 is a section D-D' of Fig. 4; Fig. 8 is a sectional view of E-E 'of Fig. 7, Fig. 9 is a sectional view of the F-F' of Fig. 7; Fig. 10 shows an embodiment with several types of piping; G-G 'of Fig. 10 and Fig. 12 is a cross-section of Η-H' of Fig. 10.

The prefabricated lower part of the sewer inlet shaft consists of a cylindrical or box-shaped body 1 of the shaft, a shaped bottom 2 of the shaft, built-in shaft inserts 3 for various pipelines, walkways 4 and a handling device 5. When

196 871

196 871 the use of the fork treads omits the production opening 6 for their mounting.

The cylindrical or box body 1 of the shaft (Fig. 1j is connected to the shaped bottom 2 of the shaft and forms a single prefabricated part). molded bottom 2 shafts

Claims (3)

Prefabricated lower part of a sewer inlet shaft, characterized in that it consists of a cylindrical or box-shaped shaft body (1) provided with a shaped shaft bottom (2). 2. The prefabricated lower part of the sewer inlet shaft according to claim 1, characterized in that there is a footbridge 4 in the cylindrical or box-shaped shaft. The shaft is handled by the device 5. Prefabricated lower parts of sewer entrance manholes can be installed on all types of sewer networks of circular or other profile. at least two shaft inserts (.3) are installed or glued to the body. Prefabricated bottom part of a sewer inlet shaft according to claim 1, characterized in that the face (1) is provided with a shaft handling device (5) for example by means of handling lugs, bayonet hinges.