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Rapid fluid mixer

Image Number 3 for United States Patent #6082889.

A mixer and method of mixing are described which involves forming a viscous first fluid into a thin film by passage through an annulus and then injecting a second fluid into the flowing liquid. Injection may be through either annulus-forming surface or both in various patterns. A particular mixer adapted for use in the uniform mixing of rennet and precheese. The precheese is suitably formed by ultrafiltration of milk. The mixer forms an annulus and injects rennet circumferentially into the surface of precheese/retentate flowing in the form of a thin film through the annulus formed by the mixer. Downstream of injection, additional mixing means may be included to further enhance mixing. The mixer is adapted for modification and facile disassembly for cleaning to maintain sanitary standards.

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