Reducing Conveyor Screw Adhesion
Industry: Chemical, product transfer
Material: 304 Stainless Steel
Case: 1501
Problem:
This customer had ongoing problems with product adhesion and buildup on the surfaces of transfer lines and equipment. The product buildup had slowed product transfer rates and lowered the system efficiency. Conveyor screws quickly developed product buildup, and began to place a large load on the drive motors. Product line was regularly shutdown to clean product buildup from screw faces. Surfaces exhibited heavy pitting due to corrosive environment.
Solution:
The required surfaces were polished to Harrison C-75 specifications. The shaft and flight faces of the conveyor screw were polished to reduce product adhesion. The OD surface was not polished so that the critical dimension was not altered. The customer saw a significant reduction of product buildup. Interval between cleaning shutdowns was increased. Time required to perform cleaning operation was decreased. Drive motors no longer experienced elevated loads.
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Reducing Rotary Valve Adhesion
Industry: Chemical, product transfer
Material: 304 Stainless Steel
Case: 1502
Problem:
This customer had ongoing problems with product adhesion and buildup on the surfaces of transfer lines and equipment. Rotary valves quickly became caked with product, not allowing a full “dump” of the product. The product buildup had slowed product transfer rates and lowered the system efficiency. The product production line was regularly shutdown to clean and remove caked material from the rotor veins.
Solution:
The required surfaces were polished to Harrison C-75 specifications. All internal surfaces of the rotor veins were polished to reduce product adhesion. The inlet and outlet of the rotor body were also polished. The customer saw a reduction of product buildup and a significant increase in product transfer rates. The customer added the C-75 polishing to the rotor valve’s preventative maintenance schedule. All valves are reconditioned as they are rotated out and back into service.
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