EP 0300342 B1 19930331 - DEVICE FOR CONTINUOUSLY MIXING MORTAR WITH WATER AND FOR TRANSPORTING THIS MIXTURE BY PUMPING
Title (en)
DEVICE FOR CONTINUOUSLY MIXING MORTAR WITH WATER AND FOR TRANSPORTING THIS MIXTURE BY PUMPING
Publication
Application
Priority
DE 3724503 A 19870724
Abstract (en)
[origin: EP0300342A2] The device for mixing plaster or mortar has, in succession, a mortar container (14), a mixer (15), a pump (12) and a conveying hose, and a vessel (10) provided with a stirrer (21, 23) is connected between the mixer (15) and the pump (12), the mixture having a free surface (37) in contact with the air and moved by the stirrer (21, 23). This enables the air content of the mortar/water mixture to be better controlled. Via the free surface in contact with the air, the same mortar/water mixture, provided with surface-active agents as pore formers, receives far more finely distributed air than is possible with conventional types of air introduction. For this purpose, the stirrer does not even need to strike the air. It can remain below the surface and needs only to generate movement on the surface. By contrast, the mortar, which is provided with anti-foaming agents, defoams on the free surface. The majority of the unwanted air escapes.
IPC 1-7
IPC 8 full level
B28C 5/12 (2006.01)
CPC (source: EP)
B01F 27/2123 (2022.01); B28C 5/1292 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0300342 A2 19890125; EP 0300342 A3 19901107; EP 0300342 B1 19930331; AT E87533 T1 19930415; DE 3724503 A1 19890202; DE 3879788 D1 19930506
DOCDB simple family (application)
EP 88111183 A 19880713; AT 88111183 T 19880713; DE 3724503 A 19870724; DE 3879788 T 19880713