Apparatus for conveying and degassing a viscous liquid

Claim 1

In an apparatus for treating photographic suspensions wherein a viscous liquid is conveyed from a storage tank to a mold shell by way of an intermediate container placed higher than the mold shell and for degassing this liquid, the improvement comprising a further container being between the storage tank and the intermediate container, said further container being closed off from the surrounding atmospheric pressure, pressure means for selectively producing alternatively a subatmospheric pressure or an atmospheric pressure in said further container, at least one ultrasonic generator, said further container having an automatic inlet valve at the intake from the storage tank, said intake valve opening during subatmospheric pressure in the further container, an automatic outlet valve in the container at the outlet to the intermediate container, said outlet valve opening during atmospheric pressure in the further container, a wall downwardly projecting into the liquid from above and an upwardly extending wall being disposed between said inlet opening and outlet opening, said walls being arranged in such a manner that the liquid is conducted over the upwardly extending wall and then under the downwardly extEnding wall, and the upwardly extending wall being in the form of a truncated-cone-shaped conduit located directly over and communicating with the inlet opening of said further container to spread the inflowing liquid into a thin layer as it flows over said truncated-cone-shaped conduit with the cone-shaped wall of the conduit being at the bottom of the cylindrical container.