Description:FIELD OF THE INVENTION

[1] The present disclosure generally relates to rotary pumps. More particularly, the present disclosure relates to a rotary pump having an enhanced filter mechanism, used for a washing machine and an associated method of operation.
BACKGROUND

[2] Washing machines are essential appliances for many households around the world. Washing machines are designed to clean and wash different types of laundry, including clothes, bed sheets, curtains, towels, and the like. The primary use of a washing machine is to clean clothes, thereby saving time and energy compared to manual washing. Modern washing machines are relatively energy efficient and consume less water and electricity compared to traditional washing methods. Washing machines operate with different wash cycles, allowing users to choose the appropriate cycle depending on the type of fabric and level of dirt.
[3] Typically, some of the main components in a washing machine include a drum/tub, a water pump, a drain pipe, a water inlet val , Claims:WE CLAIM:

1. A rotary pump (18) for a washing machine (10, 84), the rotary pump (18) comprising:
a pump casing (20) comprising a first helical structure (36) oriented along a first direction and extending along an inner peripheral surface (38);
a water inlet pipe (22) disposed proximate to an inlet cavity (32) in the pump casing (20) and coupled to the pump casing (20);
a water drain pipe (24) disposed proximate to an outlet cavity (34) in the pump casing (20) and coupled to the pump casing (20);
an impeller (58) disposed within the pump casing (20);
a motor (28) coupled to the impeller (58) and configured to drive the impeller (58);
a filter casing (60) disposed within the pump casing (20), wherein the filter casing (60) comprises a honey-comb structure (62) provided with a mesh, wherein the filter casing (60) comprises a second helical structure (64) oriented along a second direction opposite to the first direction and extending along an inner periphery (66);
a trap member (30) detachably coupled to