Portable continual mixer

• US 5,609,416 A
• Filed: 06/04/1996
• Issued: 03/11/1997
• Est. Priority Date: 06/04/1996
• Status: Expired due to Fees

• Current Assignee: Donald L. Duckworth
• Original Assignee: Donald L. Duckworth
• Inventors: Duckworth, Donald L.
• Primary Examiner(s): JENKINS, ROBERT
• Application Number:
  US08/657,956
• Time in Patent Office: 280 Days
• Field of Search: 366/8, 366/10, 366/33, 366/34, 366/35, 366/38, 366/40, 366/64, 366/156, 366/157, 366/158, 366/167, 366/168, 366/177, 366/181, 366/194, 366/195, 366/196, 366/318, 366/322 , 366/156.1, 366/158.1, 366/331, 366/300, 366/297, 366/298, 366/299
• US Class Current: 366/34
• CPC Class Codes: B28C 5/1276 with consecutive separate containers with rotating stirring and feeding or discharging means
• CPC Class Codes: B28C 5/143 for materials flowing continuously through the mixing device
• CPC Class Codes: B28C 5/148 the stirrer shaft carrying a plurality of radially extending mixing bars

Abstract

A small batch mixer particularly suited for preparing small quantities of mixture blends dry powdered material with an aggregate and a liquid. The ingredients may be cement, sand, and water. The batch mixer has two screw augers. The first auger feeds dry mix into an elongated mixing chamber of constant diameter. The second auger mixes the dry and liquid mix constituents, and conducts blended mixture to a discharge port located at the end of the elongated mixing chamber. The blade of the second auger is formed in three sections. In respective order, these sections include a first section wherein the blade is configured as a screw auger; a second section wherein the blade has intermittent gaps, thereby forming paddles pitched to urge the mixture onward to the third section; and a third section which, like the first section, includes a blade configured as a screw auger. The liquid is metered by a valve controlled in accordance with the feed rate of the solid constituents. A predetermined proportion of dry and liquid constituents is thus maintained. The second auger mixes and blends dry and liquid constituents, and discharges a final blended mixture. The housing of the mixing chamber is longitudinally split, so that it is readily opened and quickly cleaned after operation is complete.

Claims

1. A portable continual mixer for mixing dry, granular or powdered material with a liquid, comprising:

a feed auger for feeding the powdered material;

a mixing chamber comprising a housing and a mixing auger disposed within said housing, said mixing auger disposed in communication with said feed auger to receive powdered material from said feed auger, said mixing auger including a blade having a first section having a continuous screw blade arranged at a pitch, a second section having paddles arranged at a second pitch urging powdered material and liquid to migrate in the same direction as urged by said first section, said mixture blade further having a third section disposed after said first section and said second section, said third section characterized by a second continuous screw blade having a third pitch urging the powdered material and liquid to move in the same direction as urged by said first blade section and said second blade section; and

drive means for driving said feed auger and said mixing auger, said drive means comprising a single motor and means for drivingly connecting said feed auger and said mixing auger to said single motor.

2. The portable continual mixer according to claim 1, said housing of said mixing chamber being of construction split longitudinally, said housing having an upper section and a lower section, said upper section being movable with respect to said lower section, whereby access into said mixing chamber for cleaning and service is provided.

3. The portable continual mixer according to claim 1, further comprising means for conducting a liquid into said mixing chamber, and a liquid metering device controlling liquid being introduced to said mixing chamber.

4. The portable continual mixer according to claim 1, further comprising a first chute for accepting powdered material fed by said feed auger, and discharging the powdered material to said mixing chamber;

and

a second chute for feeding a second powdered material by gravity to said mixing chamber, said first chute and said second chute located above said mixing chamber.

5. The portable continual mixer according to claim 1, said motor comprising a single cylinder internal combustion engine.

6. The portable continual mixer according to claim 1, said housing having a constant diameter.

7. The portable continual mixer according to claim 1, said single motor drivingly connected to said mixing auger, and said drive means including a first pulley connected to said shaft of said mixing auger and a pulley connected to said shaft of said feed auger, and a belt connecting said first pulley and said second pulley.

8. A portable continual mixer for mixing dry, granular or powdered material with a liquid, comprising:

a feed auger for feeding the powdered material;

a mixing chamber comprising

a housing being of construction split longitudinally, said housing having an upper section and a lower section, said upper section being movable with respect to said lower section, whereby access into said mixing chamber for cleaning and service is provided, and

a mixing auger disposed within said housing, said mixing auger disposed in communication with said feed auger to receive powdered material from said feed auger, said mixing auger including a blade having a first section having a continuous screw blade arranged at a pitch, a second section having paddles arranged at a second pitch urging powdered material and liquid to migrate in the same direction as urged by said first section, said mixture blade further having a third section disposed after said first section and said second section, said third section characterized by a second continuous screw blade having a third pitch urging the powdered material and liquid to move in the same direction as urged by said first blade section and said second blade section;

a first chute for accepting powdered material fed by said feed auger, and discharging the powdered material to said mixing chamber and a second chute for feeding a second powdered material by gravity to said mixing chamber, said first chute and said second chute located above said mixing chamber;

means for conducting a liquid into said mixing chamber and a liquid metering device controlling liquid being conducted to said mixing chamber; and

drive means for driving said feed auger and said mixing auger, said drive means comprising a single motor and means for drivingly connecting said feed auger and said mixing auger to said single motor, said single motor drivingly connected to said mixing auger, and said drive means including a first pulley connected to said shaft of said mixing auger and a pulley connected to said shaft of said feed auger, and a belt connecting said first pulley and said second pulley.

9. The portable continual mixer according to claim 8, said motor comprising a single cylinder internal combustion engine.