Normal atmosphere filter

The utility model discloses a normal-pressure filter which comprises a filtering tank, an inflow pipeline, an outflow pipeline and a filtering structure and a magnet bar that are arranged in the filtering tank, wherein, the inflow pipeline is communicated with the interior and the exterior of the filtering tank from the upper part of the filtering tank, the inflow pipeline extends into the interior of the filtering structure from an port in the filtering tank and the outflow pipeline is communicated the interior and the exterior of the filtering tank between the lower part of the filtering structure and the bottom of the filtering tank. The normal-pressure filter can play a better filtering role with simple structure and realize the normal-pressure filtration by making use of the height difference of the liquid, thereby being safer for operators; the device has no demands on the pressurization grade and the manufacture cost is saved; the delivery lift of a supply pump can be reduced at the same time and the o