| 摘要 |
An automatic volumetric chemical mixer which has a mixing tank with agitator, an electronic liquid level control and a tank cover together with a hopper secured to said cover for delivering of dry granular chemicals, a power operated chemical feed metering mechanism between the hopper and cover to deliver to the tank predetermined quantities of chemical for a given time element and a chemical prewetting device for facilitating the production of homogenious solutions in the tank, with the total liquid feed to the tank delivered through the prewetting device in a predetermined volume for a given time element, together with a circuit to provide an automatic operation.
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