Auxiliary water tank and pump assembly for a vehicle

• US 20070189108A1
• Filed: 02/15/2006
• Published: 08/16/2007
• Est. Priority Date: 02/15/2006
• Status: Active Grant

• Current Assignee: Lmi (ABB Limited)
• Original Assignee: McNeilus Truck and Manufacturing Inc. (Oshkosh Corporation)
• Inventors: Quigley, Thomas, Daly, Ted, Lindblom, Thomas
• Granted Patent: US 7,824,096 B2
• Time in Patent Office: Days
• US Class Current: 366/30
• CPC Class Codes: B28C 5/4231 Proportioning or supplying water in general B28C7/12
• CPC Class Codes: B60P 3/16 for carrying mixed concrete, e.g. having rotatable drums concrete-mixing apparatus specially adapted for being mounted on vehicles with provision for mixing during transport B28C5/42
• CPC Class Codes: Y10T 137/85994 Manual

Abstract

A self-purging auxiliary fluid supply system for supplying washout or makeup water or other fluids under pressure to a truck-mounted concrete mixing/dispensing drum is disclosed. The system includes a truck-mounted fluid reservoir for containing a quantity of fluid connected to supply fluid to an air-operated diaphragm pump connected to supply auxiliary fluid from the fluid reservoir under pressure to a discharge assembly. The pump further provides an integral purge system for displacing fluid in the fluid supply system after use.

Claims

1. A self-purging auxiliary fluid supply system for supplying washout or makeup water or other fluids under pressure to a truck-mounted concrete mixing/dispensing drum, said system comprising:

(a) a truck-mounted fluid reservoir for containing a quantity of fluid, said reservoir being connected to supply fluid to a pump assembly; and

(b) an air-operated pump apparatus having an intake assembly connected to receive fluid from said reservoir for supplying auxiliary fluid from said fluid reservoir under pressure to a discharge assembly associated with the operation of said concrete mixing drum, said pump further providing air to an integral purge system for displacing fluid in said fluid supply system after use.

2. A fluid supply system as in claim 1 further comprising a drain valve in said intake line for draining said intake assembly and acting as an intake valve for purge air.

3. A fluid supply system as in claim 1 wherein said pumping apparatus is a diaphragm pump and wherein said system further comprises a source of high pressure air to operate said pump.

4. A fluid supply system as in claim 1 wherein said fluid source is a top-discharging, bottom-draw tank and said pump is mounted on said tank.

5. A fluid supply system as in claim 1 wherein said fluid source is a bottom-draw tank and said pump is mounted apart from said tank.

6. A fluid supply system as in claim 1 wherein said fluid source is a top-discharging, bottom-draw tank and said pump is mounted apart from said tank.

7. A fluid supply system as in claim 1 wherein said intake assembly is connected to a plurality of fluid sources.

8. A transit, concrete mixing vehicle for receiving concrete ingredients, mixing and dispensing concrete comprising:

(a) an inclined revolving concrete mixing drum carried on a vehicle chassis;

(b) a self-purging auxiliary fluid supply system for supplying washout or makeup water optionally including other additives under pressure to said concrete mixing drum, said system comprising;

(1) a truck-mounted fluid reservoir for containing a quantity of fluid, said reservoir being connected to supply fluid to a pump assembly; and

(b) an air-operated pump apparatus having an intake assembly connected to receive fluid from said reservoir for supplying auxiliary fluid from said fluid reservoir under pressure to a discharge assembly as needed associated with the operation of said concrete mixing drum, said pump further providing an integral purge system for displacing fluid in said fluid supply system after use.

9. A fluid supply system as in claim 8 wherein said fluid source is a bottom-feeding tank and said pump is mounted apart from said tank.

10. A fluid supply system as in claim 8 wherein said intake assembly is connected to a plurality of fluid sources.