Material flow control arrangement and method

Details Material flow control arrangement and method Material flow control arrangement and method

1997-04-15

1999-05-11

Lee, Kevin

Fluid handling

Processes

13761413, 13761421, 137238, F16K11/02

Patent

active

059017295

ABSTRACT:
A dosing apparatus 1 includes a material flow control arrangement 2 including vertical ducting 4 having co-axial therewith a vertically reciprocatory rod 5 mounting at its ends inlet and outlet valve closure plugs 6a and 6b. The upper and lower end zones of the ducting 4 define respective circular-cylindrical inlet and outlet 13a and 13b bounded by respective circular-cylindrical valve seats 14a and 14b in which the plugs 6a and 6b are sliding fits. Mounted on at least one horizontal extension piece 4d of the ducting 4 is at least one dosing pump 16. When the outlet 13b is closed by the plug 6b, the cross-section of the inlet 13a is unobstructed; similarly, when the inlet 13a is closed by the plug 6a, the cross-section of the outlet 13b is unobstructed. Furthermore, in an intermediate position of the rod 5, the cross-sections of both the inlet 13a and the outlet 13b are unobstructed, so that passage of a cleaning fluid through the ducting 4 is facilitated.

REFERENCES:
patent: 1495166 (1924-05-01), Davis, Jr. et al.
patent: 2102571 (1937-12-01), Merwin et al.
patent: 5421358 (1995-06-01), Jaeger

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