Valve for controlling solids flow
- Fairlawn, NJ
A fluidized solids control valve is disclosed that is particularly well adapted for use with a flow of coal or char that includes both large particles and fines. The particles may or may not be fluidized at various times during the operation. The valve includes a tubular body that terminates in a valve seat covered by a normally closed closure plate. The valve body at the seat and the closure plate is provided with aligned longitudinal slots that receive a pivotally supported key plate. The key plate is positionable by an operator in inserted, intermediate and retracted positions respecting the longitudinal slot in the valve body. The key plate normally closes the slot within the closure plate but is shaped and aligned obliquely to the longitudinal slot within the valve body to provide progressively increasing slot openings between the inserted and retracted positions. Transfer members are provided between the operator, key plate and closure plate to move the closure plate into an open position only when the key plate is retracted from the longitudinal slot within the valve body.
- Research Organization:
- Lummus Co., New York (USA)
- DOE Contract Number:
- EY-76-C-02-0003
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4184662
- OSTI ID:
- 863491
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
controlling
solids
flow
fluidized
control
disclosed
particularly
adapted
coal
char
particles
fines
various
times
operation
tubular
terminates
seat
covered
normally
closed
closure
plate
provided
aligned
longitudinal
slots
receive
pivotally
supported
key
positionable
operator
inserted
intermediate
retracted
positions
respecting
slot
closes
shaped
obliquely
provide
progressively
increasing
openings
transfer
move
position
progressively increasing
pivotally supported
valve seat
retracted position
normally closed
control valve
solids flow
fluidized solids
normally close
various time
controlling solids
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