Internal mixer with wide throat and wear plates
AssigneeThe Goodyear Tire & Rubber Company
InventorsJames Richard Adams, William Jackson Cain, Robert Mark Felitsky, William Arthur Watts
Life of this patent
Estimating the term…
Abstract
A wide throat internal mixer and method of mixing a batch of petrochemical material wherein bales are fed by a corresponding large size ram weight from a large size hopper into a mixing chamber through a corresponding large size throat opening having wear plates.
Claims11
An internal mixer (46) for mixing petrochemical materials and other ingredients comprising a mixer body, a mixing chamber (14) in said body, a throat opening (42) for charging said mixer, a discharge opening (18′) for discharging said mixer, a ram weight (50), a hopper (48) and a piston-cylinder assembly (52) for urging said ram weight (50) into said throat opening (42) and applying pressure to said petrochemical materials and said other ingredients in said mixing chamber (14), said mixing chamber (14) having a volume not over 8.36 cubic feet (237 liters), characterized by said throat opening (42) having an area of at least 576 square inches (3.715 sq. cm), said hopper (48) having a cross sectional area of at least 576 square inches (3.715 sq. cm), and said ram weight (50) having an area of at least 576 square inches (3.715 sq. cm).
A method of mixing a batch of petrochemical materials and other ingredients in an internal mixer (40) having a mixing chamber with a volume of 8.36 cubic ft (237 liters), and a mixer body throat opening (42), a discharge opening (18′), a feed hopper (48) mounted on said mixer (40) over said throat opening (42), a ram weight (50) in said hopper (48) connected to a piston rod (58) of a piston-cylinder assembly (52) mounted on said hopper (48) comprising:
- a. feeding said batch of petrochemical materials in the form of bales and said other ingredients into said hopper (48) and through said throat opening (42);
- characterized by:
- b. moving said ram weight (50) into said throat opening (42) with said throat opening (42) having a width of 18 inches (45.72 cm) and a length of 32 inches (81.28 cm) to provide an effective stock pressure of about 54 psi (3.94 kg/sq cm) with a pressure in said piston cylinder assembly (52) of about 79 psi (5.55 kg/sq cm);
- c. mixing said batch at said effective stock pressure until the temperature is raised to a predetermined discharge temperature;
- and
- d. discharging said batch from said mixing chamber (14′) through said discharge opening (18′).
Dependencies are inferred from the claim text.