A portable oil filtration unit 10 comprising a tank section 11 and a pump and filter unit 12 and an electrical control box 13. Operational switches are illustrated generally at 14. The unit is equipped with an inlet lance or wand 15 and an outlet lance or wand 16. The lances are located in position
A portable oil filtration unit 10 comprising a tank section 11 and a pump and filter unit 12 and an electrical control box 13. Operational switches are illustrated generally at 14. The unit is equipped with an inlet lance or wand 15 and an outlet lance or wand 16. The lances are located in position so that the lances have their ends at the bottom of a tank located in the tank housing 11. Thus when the unit is in a filtration mode and the pump turned on, oil will circulate from the tank through each of the lances and through the filtration unit.
대표청구항▼
1. A portable oil filtration unit, comprising: a tank;a pump;a filter unit comprising a strainer assembly and a paper filter roll downstream of the strainer assembly;an inlet;an outlet; andflow paths within the filter unit,the tank, the pump, the filter unit, the inlet and the outlet are all mounted
1. A portable oil filtration unit, comprising: a tank;a pump;a filter unit comprising a strainer assembly and a paper filter roll downstream of the strainer assembly;an inlet;an outlet; andflow paths within the filter unit,the tank, the pump, the filter unit, the inlet and the outlet are all mounted on a wheel assembly, the filtration unit being adapted to draw oil into the filtration unit from an external source through the inlet and then circulate oil through the tank and the filter unit and back to the tank and subsequently enable return of filtered oil from the tank through the outlet,wherein the filtration unit has a circulation mode of operation where oil travels around a circulation path including the outlet, inlet, the strainer assembly, the paper filter roll and the tank, and the inlet and outlet comprise manually operable inlet and outlet wands having respective ends and the tank includes wand holders adapted to locate the ends of the wands in oil in the tank during the circulation mode of operation. 2. The portable oil filtration unit according to claim 1, wherein the filtration unit operates with the oil at operating temperature. 3. The portable oil filtration unit according to claim 1, wherein the filtration unit has a number of operational phases, firstly at initial start up the filtration unit enters into a heating cycle to heat the pump in order to heat oil flowing through the pump, the filter unit and the strainer, once the filtration unit has reached operating temperature, the pump is switched on to either circulate oil held in the tank, return oil held in the tank to the external source or draw fresh oil to be filtered into the tank through the inlet. 4. The portable oil filtration unit according to claim 1, wherein the pump is heated in order to heat oil flowing through the pump and the filter unit is heated in order to heat oil flowing through the filter unit. 5. The portable oil filtration unit according to claim 1, wherein the filtration unit includes a strainer access and a separate filter access so that the filter and strainer may be independently accessed for cleaning or replacement. 6. The portable oil filtration unit according to claim 1, wherein the filtration unit includes a carriage assembly and the tank removably fits inside the carriage assembly. 7. A portable oil filtration unit, comprising: a tank;a pump;a filter including a paper filter roll;an inlet; andan outlet,the tank, the pump, the filter, the inlet and the outlet are all mounted on a wheel assembly, the unit being adapted to draw oil into the unit from an external source through the inlet and then circulate oil through the tank and the filter and back to the tank and subsequently allow return of filtered oil from the tank through the outlet,wherein the unit has a circulation path corresponding to a circulation mode of operation where oil travels around the circulation path including in series the outlet, the tank and the inlet, andthe inlet and outlet comprises manually operable inlet and outlet wands having respective ends, and the tank includes wand holders adapted to locate the ends of the wands in oil in the tank during the circulation mode of operation. 8. The portable oil filtration unit according to claim 7, wherein the unit includes a carriage assembly and the tank removably fits inside the carriage assembly. 9. A portable oil filtration unit, comprising: a tank;a pump;a filter including a paper filter roll;an inlet; andan outlet,the tank, the pump, the filter, the inlet and the outlet are all mounted on a wheel assembly, the unit being adapted to draw oil into the unit from an external source through the inlet and then circulate oil through the tank and the filter and back to the tank and subsequently allow return of filtered oil from the tank through the outlet,wherein the unit has a circulation path corresponding to a circulation mode of operation where oil travels around the circulation path including in series the outlet, the tank and the inlet, andthe inlet and outlet comprises manually operable inlet and outlet wands having respective ends and the tank includes wand holders adapted to locate the ends of the wands in oil in the tank during the circulation mode of operation, the wands being manually movable from the wand holders to the external source in order to fill or empty the tank. 10. The portable oil filtration unit according to claim 9, wherein the unit includes a carriage assembly and the tank removably fits inside the carriage assembly. 11. A portable oil filtration unit, comprising: a tank;a pump;a filter including a paper filter roll;an inlet; andan outlet,the tank, the pump, the filter, the inlet and the outlet are all mounted on a wheel assembly, the unit being adapted to draw oil into the unit from an external source through the inlet and then circulate oil through the tank and the filter and back to the tank and subsequently allow return of filtered oil from the tank through the outlet,wherein the unit has a circulation path corresponding to a circulation mode of operation where oil travels around the circulation path including in series the outlet, the tank and the inlet, andthe inlet and outlet comprises manually operable inlet and outlet wands having respective ends and the tank includes wand holders adapted to locate the ends of the wands in oil in the tank during the circulation mode of operation, and further wherein the unit is arranged such that oil is initially drawn from the external source into the tank via the inlet wand which is temporarily located in the external source, the outlet wand remaining located in the tank, oil is initially passed through the inlet wand, through the filter, through the outlet wand and into the tank, the inlet wand is subsequently returned to the inlet wand holder in the tank and the oil is circulated several times through the filter via the inlet wand, tank and outlet wand is subsequently moved from the outlet wand holder in the tank to be temporarily located in the external source for a purpose of return of oil to the external source through the outlet wand. 12. The portable oil filtration unit according to claim 11, wherein the unit includes a carriage assembly and the tank removably fits inside the carriage assembly.
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