Solid material comminution or disintegration – Processes – Subjecting material to impact by moving comminuting surface
Reexamination Certificate
2002-05-21
2004-04-20
Rosenbaum, Mark (Department: 3725)
Solid material comminution or disintegration
Processes
Subjecting material to impact by moving comminuting surface
C241S186200, C241S189100
Reexamination Certificate
active
06722592
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to an apparatus for removing frangible objects from a container, and more particularly, to an apparatus for unloading ceramic packing from an acid tower or similar container.
During production of acids, various solid packing materials are used in the acid tower. The processing vessel, or the acid tower, needs to be emptied and cleaned from time to time. At that time the packing material, which is conventionally called “ceramic packing” needs to be removed from the vessel. Conventional ceramic packing is made of frangible ceramic material; they are formed in various shapes and sizes.
Conventionally, the ceramic packing is removed from the acid towers by mining or vacuum. The vacuum tubes or hoses used are typically 6 inches in diameter. Due to the size and shape ceramic packing becomes locked together and removal of the ceramic packing presents a substantial difficulty. A typical acid-processing tank is about 60 feet high and 9-25 feet in diameter. The packing may be deposited on a support grid of the tank and occupy up to 15 feet of the height of the tank. In effect, the interlocking saddles form a packing column in the processing tank.
With conventional equipment, even if two vacuum machines are used in tandem, the cleanup and removal operation is extremely slow, allowing to move about 200-300 cubic feet an hour. When the typical area to be cleaned is about 7000 cubic feet, one can expect to spend about 30 hours cleaning up the acid tower and unloading the ceramic packing. During vacuuming, the ceramic pieces, being frangible, often break. However, the breakage is of no concern since the packing is disposed of after it has been removed from the acid-processing vessel, or tank.
The present invention contemplates elimination of drawbacks associated with the prior art and provision of an apparatus for unloading the ceramic packing or similar frangible objects from a container.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide an apparatus for removing frangible objects from a container with the objects being designated for disposal.
It is another object of the present invention to provide an apparatus for unloading ceramic packing from an acid-processing tank.
It is a further object of the present invention to provide an apparatus for unloading ceramic packing that is easy to operate and inexpensive to manufacture and that can be used in cooperation with conventional vacuuming equipment.
It is still a further object of the present invention to provide a method of unloading frangible objects from a container.
These and other objects of the present invention are achieved through a provision of an apparatus for unloading frangible members from a container, such as for instance a processing tank of an acid tower. The unloading apparatus comprises a crushing assembly provided with a plurality of rotatable strikers that come into contact with the frangible members and break the frangible members into smaller fragments. The unloading assembly is driven by a motor, for instance a hydraulic motor, which imparts the torque to the crushing strikers. The motor-driven drive unit of the crushing assembly has sufficient power to cause fracture of the frangible members.
The crushing assembly is provided with a guiding chute secured adjacent to the crushing stikers. An opening formed in the lower portion of the guiding chute receives the broken fragments, which are pushed by the crushing strikers toward the guiding opening. The upper portion of the guiding chute is configured to be connected to a vacuum source, such as a hose of a vacuum apparatus. The crushed fragments are sucked from the guiding chute and delivered outside of the container, or tank by the vacuum apparatus.
REFERENCES:
patent: 3856218 (1974-12-01), Harmon et al.
patent: 4568029 (1986-02-01), Newton et al.
patent: 5388773 (1995-02-01), Perry
patent: 19650188 (1998-10-01), None
patent: 62014938 (1987-01-01), None
patent: 62023433 (1987-01-01), None
patent: 04045840 (1992-02-01), None
Keaty Professional Law Corporation
Rosenbaum Mark
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