Global Patent Index - EP 0515134 A1

EP 0515134 A1 19921125 - Improvements in and relating to vacuum sewage systems.

Title (en)

Improvements in and relating to vacuum sewage systems.

Title (de)

Verbesserungen in Vakuum-Abwassersystemen.

Title (fr)

Perfectionnements aux systèmes d'évacuation sous vide.

Publication

EP 0515134 A1 19921125 (EN)

Application

EP 92304502 A 19920519

Priority

SE 9101572 A 19910523

Abstract (en)

A method and an arrangement for cleaning the evacuation duct (28) of a vacuum sewer system is described. In such a system partial vacuum is used for providing transport of waste matter through a sewer pipe (2) from a waste matter providing unit (1) to a collecting chamber (13). Function control units (5, 12, 25) govern the generation of a partial vacuum in the sewer pipe (2) prior to each transport of a volume of waste matter through the sewer pipe (2). After completing the transport of a volume of waste matter from the providing unit (1) to the collecting chamber (13), the function control units (5, 12, 25) are activated to regenerate partial vacuum in the sewer system (2, 13) and thereafter to let in a charge of ambient air to flow through the evacuation duct (28), through which air is normally drawn from the system (2, 13) when the partial vacuum is generated. This provides a purging and cleaning of the evacuation duct (28). <IMAGE>

IPC 1-7

E03F 1/00

IPC 8 full level

B61D 35/00 (2006.01); E03D 5/00 (2006.01); E03F 1/00 (2006.01); E03F 3/00 (2006.01)

CPC (source: EP)

E03F 1/006 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT DE FR GB IT

DOCDB simple family (publication)

EP 0515134 A1 19921125; EP 0515134 B1 19940824; AT E110432 T1 19940915; DE 69200346 D1 19940929; DE 69200346 T2 19941222; JP H05148883 A 19930615; SE 468485 B 19930125; SE 9101572 D0 19910523; SE 9101572 L 19921124

DOCDB simple family (application)

EP 92304502 A 19920519; AT 92304502 T 19920519; DE 69200346 T 19920519; JP 13210092 A 19920525; SE 9101572 A 19910523