Truck wash automatic chemical ratio proportioning
First Claim
1. An apparatus for proportioning a chemical with a solvent, comprising:
- a flow measurement apparatus for measuring the flow rate of the solvent;
a control unit for calculating the quantity of chemical to be added to the solvent based at least in part on the flow rate of the solvent;
a flow control device for metering the quantity of the chemical added to the solvent; and
at least one outlet for dispensing a mixture of the solvent and the chemical at a variable flow rate; and
wherein the control unit is operative to automatically adjust the quantity of the chemical added to the solvent to compensate for changes in demand of the mixture from the at least one outlet.
1 Assignment
0 Petitions
Accused Products
Abstract
A chemical ratio proportioning apparatus (100, 200) intended primarily for use in a wash bay (10) of a vehicle wash system. A gantry (14) and spray wands (18) are used for washing a vehicle (12). A quantity of solvent such as water (109) is provided under pressure from water pumps (104, 202). A chemical (114, 114a) is provided under pressure from chemical pumps (124, 206, 206a), mixed in correct proportion under control of a control unit (120) and flow sensors 112 and 118. The control unit controls metering devices such as a metering pump (124) and/or one or more proportioning solenoid valves (208, 208a) to control the quantity of chemical (114, 114a) entering the system.
34 Citations
35 Claims
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1. An apparatus for proportioning a chemical with a solvent, comprising:
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a flow measurement apparatus for measuring the flow rate of the solvent;
a control unit for calculating the quantity of chemical to be added to the solvent based at least in part on the flow rate of the solvent;
a flow control device for metering the quantity of the chemical added to the solvent; and
at least one outlet for dispensing a mixture of the solvent and the chemical at a variable flow rate; and
wherein the control unit is operative to automatically adjust the quantity of the chemical added to the solvent to compensate for changes in demand of the mixture from the at least one outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for mixing a chemical with water in a vehicle washing device, comprising:
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water flow measurement means for measuring the flow of water;
calculating means for calculating a desired flow rate for the chemical;
flow rate controlling means for controlling the flow rate for the chemical; and
outlet means for dispensing a mixture of the solvent and the chemical at a variable flow rate; and
wherein the calculating means is operative to automatically adjust the quantity of the chemical added to the water to compensate for changes in demand of the mixture from the outlet means. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification