Abstract An integral chemical cleaning apparatus for supplying and recirculating compositions used in the process of removing scale, rust, grease and dirt coatings from internal metallic surfaces of closed industrial equipment where the stages of pickling, passivating and flushing are performed consecutively without change-over to separate devices for each of such stages of the process. The apparatus comprises a circulating pump forcing fluids from a supply source to valve means capable of directing flow in either of two directions for reverse cleaning and flushing and circulation back to said valve and on through a second valve means for discharge into one of a plurality of filters for removal of insoluble particles wherein said filtrate is collected in said supply source for recirculation into the system.
An apparatus for supplying and recirculating compositions used in the cleaning of industrial equipment containing a fluid treating system comprising in combination; a. a source of supply for said compositions, b. a pump adapted to withdraw said composition from said source of supply for delivery to said equipment and recirculation of the composition from said equipment to said source of supply, c. a plurality of filters, d. a first valve means adapted to control the flow of composition to said equipment and from said equipment to said source of supply, e. a second valve means adapted to alternate the flow through said filters of the composition discharged from said equipment prior to its return to the source of supply.
Claim 2
Independent Claim
119 words
An apparatus for supplying and recirculating compositions used in the cleaning of industrial equipment containing a fluid treating system comprising in combination; a. a source of supply for said compositions, b. a pump adapted to withdraw said composition from said source of supply for delivery to said equipment and recirculation of the composition from said equipment to said source of supply, c. a plurality of filters, d. a first valve means adapted to control the flow of composition to said equipment and from said equipment to said source of supply, e. a second valve means adapted to alternate the flow through said filters of the composition discharged from said equipment prior to its return to the source of supply.
Claim 3
Dependent Claim
18 words
An apparatus as described in claim 1 wherein said first valve means is an integral four-way, four-port valve.
Claim 4
Dependent Claim
18 words
An apparatus as described in claim 2 wherein said second valve means is an integral three-way, three-port valve.
Claim 5
Dependent Claim
29 words
An apparatus as described in claim 3 wherein said source of supply is a tank equipped with heating means and the plurality of filters are mounted in said tank.