Filter cleaning system and method
AssigneeFiltration Technology Corporation
InventorsJohn HAMPTON, Greg WALLACE, James HARRIS
Life of this patent
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Abstract
The present invention discloses a system and method for self-cleaning filters without having to open the filter housing. Wash nozzles are integrated with the filter housings such that when the filters are clogged, both back-wash and regular washing can be performed with practically no down time. Moreover, without opening the filter housing, the hazardous components of the fluid to be filtered can be contained and dealt with before they escape the filter housing, thereby significantly reduces the environmental impact and harm to the working crew.
Claims20
A system for cleaning a filter cartridge located within a filter housing, the filter cartridge having a hollow core, the system comprising:
- a) a wash nozzle integrated in a filter housing;
- said wash nozzle on a movable cylinder, said cylinder mounted on top of the filter housing, wherein the wash nozzle is fluidly coupled to a source of wash fluid through a wash pipe located in the cylinder within the hollow core of the filter cartridge and capable of moving vertically within the hollow core by raising and lowering the cylinder;
- b) a purge pipe concentrically surrounds the wash pipe and forms a purge inlet to form an annular space around the wash pipe capable of fluid travel and terminates near the wash nozzle;
- c) the filter housing having a fluid inlet for introducing a fluid to be filtered, and a fluid outlet for draining filtered fluid, wherein the fluid inlet is fluidly coupled to the hollow core of the filter cartridge;
- and
- d) a processor controlling the movement of the wash nozzle.
A method for self-cleaning a filter cartridge located within a filter housing without opening the filter housing, the filter cartridge having a fluid outlet, a hollow core fluidly connected to a fluid inlet of the filter housing, a gas injection inlet, and a wash nozzle and purge pipe mounted on the filter housing in a cylinder on top of the filter housing, the method comprising the steps of:
- a) terminating the fluid inlet to the filter housing;
- b) closing the fluid outlet to the filter so that the filter housing is filled with fluid;
- c) placing the wash nozzle and the purge pipe at the top of the filter housing;
- d) initiating a back-wash by introducing a high-pressure gas into the interior of the filter housing;
- and
- e) forcing the fluid out of the filter housing with the gas with particulate matter from the interior of the filter cartridge through the purge pipe.
A method for self-cleaning a filter cartridge located within a filter housing without opening the filter housing, the filter cartridge having a hollow core, the filter housing having a fluid inlet for introducing the influent, and a wash nozzle and wash pipe mounted on the filter housing capable of traveling through the core of the filter cartridge, the method comprising the steps of:
- a) closing the fluid inlet to the filter housing;
- b) washing the filter cartridge by spraying a high pressure wash fluid introduced through the wash nozzle to break the particulate build-up on the hollow core;
- and
- c) draining the wash fluid and debris from the filter housing through the filter inlet.
A method for self-cleaning a filter cartridge located within a filter housing without opening the filter housing, the method comprising the steps of:
- a) closing a fluid inlet to the filter housing so that the filter housing is substantially full of fluid;
- b) gradually introducing pressurized gas into the filter housing such that the gas creates turbulence that will dislodge particulate matter from the interior of the filter core;
- c) backwashing the filter core by purging the fluid inside the filter housing and the dislodged particulate matter by providing a purge exit from the filter housing utilizing the force of the pressurized gas;
- d) terminating the backwashing by ceassation of introduction of pressurized gas in the filter housing and closing the purge exit;
- e) washing the filter cartridge by spraying a high-pressure wash fluid to the interior of the filter core to remove any additional particulate matter;
- and
- f) draining the wash fluid with any particulate matter from the filter housing.
Dependencies are inferred from the claim text.