US 5,433,380 A · Self-cleansing pressure washing system for chemical sprayer

Abstract

An injection type chemical sprayer (30) including interior and exterior cleaning systems. The interior cleaning system can include a rinsing nozzle (58) located within the concentrated chemical tank (52). Rinsing nozzle (58) can be selectively connected to the pressure side of a spray pump (34). The chemical rinsate can be dispensed by means of a rinsate pump (64) in combination with a rinsate nozzle (66). Following the rinsing operation, the concentrated chemical tank (52) can be reconnected to an injection pump (56), and then the concentrated chemical tank (52) can be filled with clean water which is then pumped through the injection system to completely flush it of the chemical being injected. System (30) also preferably includes an exterior cleaning system which can include a spray gun (60) selectively connected to the pressure side of the spray pump (34).

Claims20

Dependent claims

A chemical spray system comprising:

(a) a source of pressurized water;
(b) a tank for holding concentrated chemical;
(c) means in fluid communication with the chemical tank for injecting concentrated chemical into the pressurized water source to form a chemical solution;
(d) means for spraying the chemical solution in a desired manner;
(e) means in selective fluid communication with the source of pressurized water for rinsing the chemical tank, thereby forming a rinsate solution within the chemical tank;
and
(f) means in selective fluid communication with the chemical tank for dispensing the rinsate solution.

4 more elements

A chemical spray system comprising:

(a) a source of pressurized water;
(b) a tank for holding concentrated chemical;
(c) an injection device having an inlet and an outlet, wherein the injection device inlet is in fluid communication with the chemical tank;
(d) a mixing device having an inlet and an outlet, wherein the injection device outlet and the pressurized water source are in fluid communication with the mixing device inlet, and wherein the water and concentrated chemical combine to form a chemical solution in the mixing device;
(e) a nozzle for spraying the chemical solution in a desired manner in fluid communication with the outlet of the mixing device;
(f) a rinsing nozzle located within the chemical tank in selective fluid communication with the pressurized water source, for rinsing the chemical tank, thereby forming a rinsate solution within the chemical tank;
and
(g) a rinsate spray nozzle in selective fluid communication with the chemical tank for dispensing the rinsate solution.

5 more elements

Dependencies are inferred from the claim text.

Self-cleansing pressure washing system for chemical sprayer

Life of this patent

Self-cleansing pressure washing system for chemical sprayer

Life of this patent

Abstract

Claims20