A thread-based filter comprising: a thread-based medium comprising multiple threads; and a tube, wherein the tube at least partially houses the thread-based medium with the threads oriented lengthwise along the length of the tube, and wherein the thread-based medium is configured to trap impurities present in a fluid flowing substantially lengthwise along the threads during a filtration mode, and wherein the thread-based medium is configured to release impurities into a fluid flowing substantially lengthwise along the threads during a washing mode.

A thread-based filter comprising: a thread-based medium comprising multiple threads; and a tube, wherein the tube at least partially houses the thread-based medium with the threads oriented lengthwise along the length of the tube, and wherein the thread-based medium is configured to trap impurities present in a fluid flowing substantially lengthwise along the threads during a filtration mode, and wherein the thread-based medium is configured to release impurities into a fluid flowing substantially lengthwise along the threads during a washing mode.

A backwash header for a cloth filter includes a body having a length, a diameter, first and second ends, a longitudinal axis, and an exterior surface, the body defining at least one internal cavity. The body includes at least one suction slot sized to allow fluids and solids to enter the internal cavity from outside of the exterior surface. A structure is attached to a portion of the exterior surface of the body around and extending away from the suction slot to form an open-ended chamber defined by the structure and a portion of the exterior surface near the suction slot. The structure allows fluids and solids to enter the open-ended chamber and then the suction slot and cavity from a material being cleaned. Cloth filters and methods of treating water and wastewater using the backwash headers and cloth filters.

A backwash header for a cloth filter includes a body having a length, a diameter, first and second ends, a longitudinal axis, and an exterior surface, the body defining at least one internal cavity. The body includes at least one suction slot sized to allow fluids and solids to enter the internal cavity from outside of the exterior surface. A structure is attached to a portion of the exterior surface of the body around and extending away from the suction slot to form an open-ended chamber defined by the structure and a portion of the exterior surface near the suction slot. The structure allows fluids and solids to enter the open-ended chamber and then the suction slot and cavity from a material being cleaned. Cloth filters and methods of treating water and wastewater using the backwash headers and cloth filters.

An air conditioner unit includes a blower fan, an inlet grille upstream of the blower fan, and an outlet grille downstream of the blower fan. The air conditioner unit also includes an air filter positioned between the inlet grille and the outlet grille with a belt encircling and enclosing the air filter on four sides. The air conditioner unit further includes a motor operatively connected to the belt. The motor is configured to rotate the belt around the air filter and thereby clean the air filter.

An air conditioner unit includes a blower fan, an inlet grille upstream of the blower fan, and an outlet grille downstream of the blower fan. The air conditioner unit also includes an air filter positioned between the inlet grille and the outlet grille with a belt encircling and enclosing the air filter on four sides. The air conditioner unit further includes a motor operatively connected to the belt. The motor is configured to rotate the belt around the air filter and thereby clean the air filter.

A thread-based filter having a thread-based medium including multiple threads and a tube, the tube at least partially housing the thread-based medium with the threads oriented lengthwise along the length of the tube and the thread-based medium is configured to trap impurities present in a fluid flowing substantially lengthwise along the threads during a filtration mode, and the thread-based medium is configured to release impurities into a fluid flowing substantially lengthwise along the threads during a washing mode.

A thread-based filter having a thread-based medium including multiple threads and a tube, the tube at least partially housing the thread-based medium with the threads oriented lengthwise along the length of the tube and the thread-based medium is configured to trap impurities present in a fluid flowing substantially lengthwise along the threads during a filtration mode, and the thread-based medium is configured to release impurities into a fluid flowing substantially lengthwise along the threads during a washing mode.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.