| 摘要 |
<p>A generally cylindrical mixing tank for oil well drilling mud circulates the mud passing out of a set of urethane nozzles about an elliptical path in the tank, which is coated internally with urethane thereby to provide a long lasting mixer in the presence of the abrasive drilling mud. New ingredients are entered into the tank directly from bags as they are passed over a cutter knife and across an entry grillwork platform. Water may be added for proper viscosity. The nozzles, by aid of a circulating pump taking mud from the tank, cause the mud to flow in a generally rotary path inside the tank and a set of knives is placed in this path to slice up any lumps or chunks of mud that may form.</p> |
