초록 ▼

A gear pump for dispersing a gas into a liquid is provided with mixing means for improving the uniformity of the dispersion. In preferred form, the mixing means comprises a series of fixed, shallow, blind cavities that open to the pumping cavity between the liquid inlet and the outlet, and which are

A gear pump for dispersing a gas into a liquid is provided with mixing means for improving the uniformity of the dispersion. In preferred form, the mixing means comprises a series of fixed, shallow, blind cavities that open to the pumping cavity between the liquid inlet and the outlet, and which are positioned to be “wiped”by the gear teeth as the gears rotate. The alternate connection and disconnection of the intertooth spaces to these cavities as the gears rotate establishes motion or turbulence of the gas/liquid mixture within the intertooth spaces, and surprisingly improves uniformity of the dispersion.

대표청구항 ▼

In a gear pump wherein a gas under pressure and a liquid are introduced into a pumping chamber, intermixed by the action of the gear teeth which mesh in intertooth spaces in said pumping chamber and the mixture is delivered to an outlet port, mixing means for improving the dispersion of the gas in t

In a gear pump wherein a gas under pressure and a liquid are introduced into a pumping chamber, intermixed by the action of the gear teeth which mesh in intertooth spaces in said pumping chamber and the mixture is delivered to an outlet port, mixing means for improving the dispersion of the gas in the liquid comprising, a series of blind cavities formed in a surface which adjoins said chamber, said cavities opening to said chamber, said cavities being at spaced positions along the path of movement of the teeth of at least one of said gears, said teeth wiping across the respective cavities as the gear rotates, the intertooth spaces of said gear alternately connecting to and disconnecting from the cavities in sequence as the gear rotates, the cavities when connected to the respective intertooth spaces providing additional volume into which gas in the intertooth spaces can surge, thereby improving the dispersion of the gas in the liquid.