US 4,440,500 AGranted

High pressure impingement mixing apparatus

AssigneePolyurethane Technology of America-Martin Sweets Company, Inc.

InventorFritz W. Schneider

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Abstract

Apparatus for high pressure impingement mixing includes a mixing chamber and aftermixer chamber located on opposite sides of, and perpendicular to, a transfer dispense chamber. Two or more reactive components are injected into the mixing chamber. The resultant mixture is directed across the transfer dispense chamber into the aftermixer chamber, and from the aftermixer chamber back into the transfer dispense chamber and around the crossing mixture to the outlet of the transfer dispense mixer for dispensing. Each chamber includes a plunger which is actuated sequentially to interrupt mixing and clean the respective chamber. The device provides effective and intimate mixing of the reactive components and dispenses a stable emulsion so that the device can be used in applications presently suitable only for low pressure mixing devices. It may also be used in existing high pressure applications but without the need for conventional aftermixer devices and gating systems disposed in the forming molds.

Claims12

Dependent claims

Apparatus for high pressure impingement mixing of at least two liquid components comprising:

a housing having a transfer dispense chamber including a first opening, a second opening, and an outlet for dispensing mixed components;
an impingement mixing chamber means for impingement mixing of liquid components and for directing said components through said first opening into said transfer dispense chamber, and across said transfer dispense chamber out through said second opening, said means including an impingement mixing chamber, injection means for introducing said at least two liquid components into said mixing chamber for impingement mixing thereof, and a reciprocatable plunger for selectively cleaning said mixing chamber;
an aftermixer chamber means, including an aftermixer chamber communicating with said second opening, for receiving mixed components directed from said mixing chamber means, for further mixing said components in said aftermixer chamber, and for returning said mixed components delivered thereto to said transfer dispense chamber such that the returned components are dispensed through said outlet;
second plunger means disposed in said aftermixer chamber for mechanical cleaning of said aftermixer chamber;
and
third plunger means disposed in said transfer dispense chamber for mechanical cleaning of said transfer dispense chamber after a dispense operation.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/390,777Filed 21 Jun 1982
Granted: 3 Apr 1984
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B29B 7/728
Measuring, controlling or regulating: measuring data of the driving system, e.g. torque, speed, power, vibration
B29B 7/7668
The mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube: having a second tube intersecting…
B29B 7/7636
Parts; Accessories: construction of the feed orifices, bores, ports
B29B 7/7647
Parts; Accessories: construction of the mixing conduit module or chamber part