Mixing and aerating apparatus for plastics专利检索-四极管电子零件及设备专利检索查询-专利查询网

Mixing and aerating apparatus for plastics

阅读：444发布：2022-01-05

专利汇可以提供Mixing and aerating apparatus for plastics专利检索，专利查询，专利分析的服务。并且Mixing apparatus for liquid plastics, such as polyesters, polyurethane elastomers and polyurethane foams, and liquid additives to same, for effecting certain reactions, characterized by a plurality of mixing rotors which may be optionally employed with basic drive mechanism and liquid supply conduits, common to all rotors, to thereby provide apparatus of variable utility, for the various plastics, by minimizing the number of operative parts required. For certain foaming plastics, air is aspirated into the rotor mixing chamber to provide the required air for initiating foaming by subsequent chemical reaction. For other plastics which require a high shearing action during mixing, alternative forms of rotors are employed which move the plastic in a tortuous path for effecting such action. All rotors are driven at the same speed by a direct drive motor which rotates at 1,700-1,800 r.p.m. (four pole motor) as distinguished from former required speeds of the order of 6,000 r.p.m.，下面是Mixing and aerating apparatus for plastics专利的具体信息内容。

权利要求

2. Apparatus, as claimed in claim 1, wherein: each pair of pins is indexed with respect to an adjacent set of pins.

3. Apparatus, as claimed in claim 2, wherein: said indexing is 90* with respect to an adjacent pair of pins.

4. Apparatus, as claimed in claim 1, wherein: at least one of said pins is canted so that its flat side forms the downstream surface of a propeller blade.

5. Apparatus, as claimed in claim 1, further including: a tube affixed to the casing having an end disposed between adjacent pairs of pins, said tube having an aperture in the downstream side thereof through which air may be aspirated into the mixture as it passes around the tube in a hydrodynamic foil.

6. Apparatus for mixing liquid plastics and additives for the same, comprising: shaft support means forming an introduction chamber for receiving a metered proportion of the plastic and additive, said chamber having an open side and said support means being constructed to have a plurality of mixing head casing interchangeably affixed thereto wherein each such mixing head has a bore therein which is open at one end for communicating with said introduction chamber and has an outlet opening through which the mixture may be delivered which is remote from said one end and in communication with said bore; a rotatable drive shaft extending through said support means and said chamber; a shaft seal associated with said support means and engageable with said shaft; a mixing rotor affixed to said shaft and rotatable in said bore, said rotor having a plurality of axially-spaced radially projecting pairs of half-round pins extending through radial apertures through the shaft, at least some of said pairs being spread apart at opposite ends thereof for mixing the plastic and additive and for pumping it toward said outlet opening, each of said pairs of pins being indexed 90* with respect to an adjacent set of pins, at least one of said pins being canted so that its flat side forms the downstream surface of a propeller blade; and a tube affixed to the casing having an end disposed between adjacent pairs of pins, said tube having an aperture in the downstream side thereof through which air may be aspirated into the mixture as it passes around the tube in a hydrodynamic foil.

7. Apparatus for mixing liquid plastics and additives for the same, comprising: shaft support means forming an introduction chamber for receiving a metered proportion of the plastic and additive, said chamber having an open side and said support means being constructed to have a plurality of mixing head casings interchangeably affixed thereto wherein each such mixing head has a bore therein which is open at one end for communicating with said introduction chamber and has an outlet opening through which the mixture may be delivered which is remote from said one end and in communication with said bore; a rotatable drive shaft extending through said support means and said chamber; a shaft seal associated with said support means and engageable with said shaft; and a mixing rotor affixed to said shaft and rotatable in said bore, said rotor being provided with a first worm tooth of a diameter less than said bore adapted to propel the mixture toward said outlet, and a second worm tooth axially spaced from the first worm tooth having a plurality of angularly spaced generally helical grooves therein providing channels for discontinuity in flow through the second worm tooth, the second worm tooth being of opposite hand to the first worm and of a diameter substantially fitting said bore.

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Mixing and aerating apparatus for plastics

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