Exhaust gas emission circulation filtering apparatus for air pollution prevention

A filtering apparatus comprising:

• an exhaust pipe, multiple air exhaust devices, a conveyor, a filtering net, a tank washing device, and a cleaning device;
• wherein:
• the exhaust pipe includes multiple air outlets;
• the air exhaust devices are mounted on the exhaust pipe and located at an outside of the air outlets;
• the air exhaust devices align with the air outlets respectively;
• the conveyor includes a first delivery circuit extending in a horizontal axial direction and a second delivery circuit extending in a vertical longitudinal direction;
• the first delivery circuit extends through the air outlets;
• the second delivery circuit connects the first delivery circuit;
• the first delivery circuit and the second delivery circuit form a two-stage rotation loop;
• the filtering net extends through the first delivery circuit and the second delivery circuit and is movable reciprocatingly in the two-stage rotation loop of the first delivery circuit and the second delivery circuit;
• the tank washing device is arranged in the second delivery circuit and includes a liquid tank;
• the cleaning device is mounted in the tank washing device and includes multiple rolling shafts;
• each of the rolling shafts is provided with multiple brushes;
• the conveyor is electrically connected with an external power supply;
• the conveyor is configured to be operated by the external power supply to drive the filtering net;
• the filtering net is drivable by the conveyor and movable along the two-stage rotation loop of the conveyor reciprocatingly;
• when the filtering net is movable in the first delivery circuit and configured to pass passes through the air outlets, the filtering net is configured to perform a filtering process;
• when the filtering net is movable in the second delivery circuit, the filtering net is configured to performs a cleaning process and is configured to be washed and cleaned by the tank washing device and the cleaning device;
• and
• the filtering net is movable between the first delivery circuit and the second delivery circuit to perform two-stage purifying circulation reciprocatingly to drain a purified gas from the air exhaust devices;
• the filtering apparatus further comprising:
• a deflection prevention device including multiple positioning seats and multiple positioning snaps;
• wherein:
• each of the positioning seats is provided with a C-shaped slot;
• the positioning seats are mounted on two sides of each of the first delivery circuit and the second delivery circuit;
• the positioning snaps are mounted on two sides of the filtering net and align with the positioning seats respectively;
• and
• each of the positioning snaps is movable with the filtering net and is configured to be allowed to pass through the C-shaped slot of one of the positioning seats.