The invention relates to the field of sea
water desalination, and in particular, relates to a submersible self-priming filter head of a miniature
desalination machine and a working method of the submersible self-priming filter head. A
rotational flow shell, a one-way valve A, a lower inclined baffle, a supporting frame, an upper inclined baffle and a one-way valve B are arranged in the filter headshell from bottom to top; three-stage
filtration is carried out through three cavities from bottom to top, and the filtering capacity of the filtering head and the
dirt containing effect of the multiple cavities are improved by means of
cyclone separation in the first cavity and the inclined plate
sedimentation principle in the second cavity and the third cavity respectively. The supporting framecan drive a sealing
gasket to move up and down according to the negative pressure condition in the filter head, the blockage probability of the filter head is reduced, meanwhile, the flow channel area is increased, the
gravity separation time is prolonged, a complex flow field and a
water flow dead zone in the tank body are avoided, and the water-
sewage separation efficiency is effectively improved. Main parts in the filter head are of a detachable structure, even if the filter head is blocked, internal parts can be rapidly cleaned by detaching the filter head, and the effect of rapid maintenance is achieved.