The utility model discloses a fish excrement and particulate matter filtering device for a
fish tank, which relates to the technical field of
fish tank accessories and comprises an upper cover, a filtering main body box, a drawer outer box, a filtering drawer and a confluence bottom support, the device is small and exquisite in overall design, small in occupied space and suitable for fish tanks of different sizes, the space around the
fish tank is saved through the design, the device is more attractive and elegant, meanwhile, due to the characteristic of modular
assembly, a user can flexibly adjust the device according to the actual size and requirement of the fish tank, and the device is convenient to use. The water outlet grooves of the three groups of inclined nozzles in the device obliquely spray water to cooperatively drive the filter screen to rotate, so that effective filtering is realized, fish
manure and particle impurities are cleaned through physical scouring and rotary
centrifugation, the filter screen is effectively prevented from being blocked, the filtering effect is remarkably improved, and meanwhile, the water outlet grooves of the three groups of inclined nozzles are effectively prevented from being blocked. The design of the rotary filter screen and the inclined
nozzle also reduces the
energy consumption, and conforms to the modern environment-friendly and energy-saving concept.