Microprocessor controlled liquid chemical delivery system and me

Details Microprocessor controlled liquid chemical delivery system and me Microprocessor controlled liquid chemical delivery system and me

1989-06-16

1991-05-07

Smith, Jerry

Boots, shoes, and leggings

364502, 364510, 222 59, 68 17R, 68207, 137266, G05D 1113, D06F 3902

Patent

active

050142119

ABSTRACT:
A liquid chemical delivery system automatically delivers viscous chemicals to a number of destinations, such as a number of industrial clothes washers. Several distinct chemicals are pumped, one at a time, into a manifold. The chemical being pumped is mixed with water in the manifold and then transported through a distribution line to its specified destination. By mixing the chemicals with water, viscous chemicals are diluted and delivered using a low pressure delivery system. A single flow meter is used to calibrate all the chemical metering pumps and to recalibrate those pumps periodically, thereby providing accurate chemical metering. The manifold and distribution tube are automatically flushed with water after every chemical delivery so as to reduce corrosion and maintenance costs. In addition, potentially reactive chemicals are kept separate from one another despite the use of only a single distribution line. The system uses a proof-of-flow conductivity meter in the manifold to confirm the presence of each specified chemical in the manifold during the chemical pumping process. Local proof-of-delivery conductivity meters at the system's output ports are used to verify delivery of each chemical to the specified output port.

REFERENCES:
patent: 3160317 (1964-12-01), Hambro et al.
patent: 4441340 (1984-04-01), Kaplan
patent: 4524801 (1985-06-01), Magnasco et al.
patent: 4648043 (1987-03-01), O'Leary
patent: 4691850 (1987-09-01), Kirschmann et al.
patent: 4845965 (1989-07-01), Copeland et al.
patent: 4932227 (1990-06-01), Hogrefe
patent: 4941596 (1990-07-01), Marty et al.

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