The invention discloses a
slurry purifying and filtering device and
system.The liquid inlet end and the liquid outlet end of the filtering device are connected with a first two-way fluid driving unit and a second two-way fluid driving unit respectively, the filtering device comprises a thickening body, supporting nets, filtering membranes, convex edges and a cylinder, and the multiple
layers of supporting nets and filtering membranes are arranged in a space defined by the thickening body, the convex edges and the cylinder; one end of the cylinder is open and fixedly connected with the convex edge in a threaded mode, the convex edge is connected with the thickened body, the supporting net is connected with the convex edge and divides a cavity formed by the thickened body and the cylinder into an inner cavity and an outer cavity, a liquid flow channel is formed in the thickened body and connected with the inner cavity, and an anti-blocking gap is reserved. The filtering
system comprises the filtering device, a bidirectional fluid driving module and an ultrasonic enhanced
backwashing module. Through the multi-layer nested structure and standardized
interface design of the quick-release filtering functional component, quick switching and free matching of the thickness degree of the filter screen are realized, and the filter screen can be flexibly connected in series, is adaptive to purification scenes of different working conditions and is high in purification precision.