SU1193227A2 - Flexible coupling for joining drainage pipes - Google Patents

Abstract

FLEXIBLE CLUTCH FOR CONNECTING DRAIN PIPES according to auth.St. No. 1041625 0 is different from the fact that, in order to reduce the volume of closed drainage without increasing the overall standard length of the sleeves, the ribs on the surface of the fitting tubes have the form of broken lines.

Description

The invention 'relates to land reclamation and can be used in the construction of closed drainage and combined reclamation systems with the possibility of mechanized pipe laying.

The purpose of the invention is the reduction of the siltability of the closed drainage without increasing the standard length of the couplings.

This goal is achieved by the fact that the ribs on its planting nozzles are made in a zigzag shape in the form of broken lines.

Figure 1 shows a flexible coupling, side view; figure 2 is a section aa in figure 1.

The flexible coupling of the proposed design contains a hollow body 1 with a transverse corrugation 2 and landing pipes 3. On the outer surface of the coupling 4 are applied. Frequently located on the surface of the housing 1 and pipes 3 are frequent 'zigzag ribs 5 in the form of splines. To ensure a reliable tight fit of the coupling at the ends of the connecting pipes, the outer diameter of the nozzles 3, taking into account the height of the ribs 5, is made identical with the inner diameter of the ceramic pipes

6.

The work of a flexible drainage sleeve is as follows.

During the drainage period, excess water in the soil through the soil layer is gravitationally directed to the drainage pipeline, which consists

1193227 * yz ceramic drainage pipes. standard sizes (333 mm) and flexible couplings connecting them together. Water through slots'7, in which a reverse filter is formed, seeps into the drainage pipeline and is discharged by gravity outside the drained massif. When positioned through a return filter, groundwater is freed from the pumps contained in it.

The zigzag configuration of the ribs 5 (Fig. 1) with an unchanged length of the landing pipes 3 increases 15 the length of the water-receiving slots 7, creates additional resistance to the flow of groundwater when passing through a layer of the inverse filter. The extension of the groundwater flow filtration path with a constant standard width of the landing pipes is achieved by appropriate selection of the angles of rotation of the broken lines that make up the zigzag ribs.

: 25 It is as a result of such a structural change that the required thickness of the inverse filter is achieved, i.e. not less than 50-120 mm with a standard length of the landing pipes 30 3, i.e. 30-50 mm, as well as the corresponding pulp resistance. The increased resistance along the length of the water receiving slots 7 contributes to the rapid retention of soil particles in them and _{35 the} formation of the required thickness of the inverse filter.

Claims (1)

No. 1041625 _? It is characterized by the fact that, in order to reduce the creepability of the closed drainage without increasing the total standard length of the couplings, the ribs on the surface of the landing pipes have the form of broken lines.