| 摘要 |
A counterbalanced, dual submarine-type liquid mixer provides a pair of counterbalanced mixing devices that move at opposing ends of a balance bar suspended above the surface of a liquid to be mixed. The bar is able to pivot so as to vertically move its ends alternately between a raised and a lowered position in such a manner that when one of the mixing devices is in a raised position in the liquid, the other of the mixing devices is in the lowered position and each of the two mixing devices tends to counterbalance the other. Each mixing device is buoyed upwardly in the liquid by the buoyant force of a gas captured below a concave surface of the mixing device and also by the negative buoyant force of the other mixing device when it has exhausted its buoyant gas. Alternately, each of the mixing devices, on its downward stroke is moved downwardly by its own weight (negative buoyancy) and by the buoyant action of the other mixing device which moves simultaneously on its upward stroke. Buoyant gas is injected and removed from under the mixing device's concave surface by a gas conduit channel integral with a supporting rod extending from the balance bar. The mixing device, in an alternate embodiment, uses a cable for interconnecting dual rigid caps or one cap and a counterweight to accomplish identical objectives. |
