WATER AND DEBRIS RECOVERY SYSTEM
The present system relates to a water and debris recovery system for a water blasting device or water demolition system suitable for mounting upon the frame of a mobile vehicle for easy transport and use. The system includes a liquid reservoir connected to a high pressure fluid pump for directing ultra-high pressure water through a blast head to remove the coatings or markings from a surface. The blast head includes a shroud which surrounds the blasting area to at least partially contain the water and debris dislodged from the surface. A vacuum pump is secured to the shroud with the vacuum passing through a cyclone type separator allowing the water and debris to settle to the bottom portion of the cyclone. A mud type pump is then utilized to transfer the collected water and debris into an open top tank.
1 . A water and debris recovery system comprising:
a blast head having at least nozzle therein, said nozzle constructed and arranged to direct high pressure fluid against a surface for impingement thereon, said blast head having a shroud at least partially surrounding said at least one nozzle for substantially containing said high pressure fluid after said impingement,
a vacuum system constructed and arranged to provide a negative pressure air flow through said shroud sufficient to draw said fluid into a tubular member, said tubular member fluidly connected to a separator, said separator being constructed and arranged to separate said air flow and said fluid,
a mud pump assembly, said mud pump assembly including a reciprocating member for drawing said separated fluid from said separator during movement in a first direction, said fluid directed to an open topped tank during movement of said reciprocating member in a second direction, and
a tank for containing said separated fluid.
2 . The water and debris recovery system of claim 1 wherein said vacuum system includes a roots type blower for creating said negative air flow.
3 . The water and debris recovery system of claim 1 wherein said separator is a cyclonic separator.
4 . The water and debris recovery system of claim 1 wherein said separator is a two stage cyclonic separator.
5 . The water and debris recovery system of claim 1 wherein said mud pump assembly includes a main body, said main body having an inlet and an outlet and a variable volume pump chamber, whereby variation in said pump chamber volume creates a negative pressure when said pump chamber volume is expanded and a positive pressure when said pump chamber volume is collapsed.
6 . The water and debris recovery system of claim 5 wherein said variable volume pump chamber includes a piston mounted for reciprocation within a cylinder.
7 . The water and debris recovery system of claim 6 wherein said piston is operably connected to a first end of a connecting rod member, a second end of said connecting rod member secured to an offset crank member, whereby rotation of said offset crank member causes reciprocation of said piston within said cylinder.
8 . The water and debris recovery system of claim 7 wherein said offset crank member includes an adjustable offset.
9 . The water and debris recovery system of claim 5 wherein said inlet includes a first check valve constructed and arranged to allow said separated fluid to enter said variable volume pump chamber and said outlet includes a second check valve constructed and arranged to allow said separated fluid to exit said variable volume pump chamber.
10 . The water and debris recovery system of claim 9 wherein said first and said second check valves are constructed of a polymeric material that resists adhesion to sticky polymers.
11 . The water and debris recovery system of claim 10 wherein said check valves are constructed from rubber.
12 . The water and debris recovery system of claim 10 wherein said check valves are constructed from polyurethane.
13 . The water and debris recovery system of claim 5 wherein said variable volume pump chamber includes a diaphragm having an outer perimeter edge fixedly secured so that a central portion of diaphragm may be reciprocated to alter said volume within said variable volume chamber.
14 . The water and debris recovery system of claim 13 wherein said diaphragm is operably connected to a first end of a connecting rod member, a second end of said connecting rod member secured to an offset crank member, whereby rotation of said offset crank member causes reciprocation of said piston within said cylinder.
15 . The water and debris recovery system of claim 14 wherein said offset crank member includes an adjustable offset.
16 . The water and debris recovery system of claim 14 wherein said inlet includes a first check valve constructed and arranged to allow said separated fluid to enter said variable volume pump chamber and said outlet includes a second check valve constructed and arranged to allow said separated fluid to exit said variable volume pump chamber.
17 . The water and debris recovery system of claim 16 wherein said first and said second check valves are constructed of a polymeric material that resists adhesion to sticky polymers.
18 . The water and debris recovery system of claim 17 wherein said check valves are constructed from polyurethane.
19 . The water and debris recovery system of claim 1 wherein said tank is an open topped tank.
20 . The water and debris recovery system of claim 1 wherein said water and debris recovery system is mounted on a vehicular frame.