FIELD: production of chemical fibers by fibers shaping machines, apparatuses for threads solution filtration in particular. SUBSTANCE: apparatus has hollow cylindrical body with branch pipes for feeding and removal of solution and provided with gasket lid and filtering plug situated in body cavity along its longitudinal axis. Filtering plug has radial holes made in its side walls to deliver solution in its central canal and filtering material is fixed on outer surface of plug. Mean of plug fastening in body has flexible seal ring dividing body cavity for zones of different pressure of solution. Branch pipes of solution feeding and removal are located in zones of high and low pressure correspondingly. Apparatus has damping member mounted in body low pressure zone between gasket lid and flexible seal ring and is capable for forced engagement with them. Mean for plug fixing in body is made in the form of ring-type adjusting flange rigidly coupled with outer surface of plug in zone of high pressure and bush is free embracing plug in zone of low pressure and forming together with flange contour linked to flexible seal ring. Damping member made in the form of flexible spiral mounted with capability to adjust rigidity of coils embraces the plug. Gasket lid has flexible membrane of corrosion resistant material. In the case one of spiral butts contacts membrane and another one - with bush butt of mean for plug fastening in body. EFFECT: improved design. 3 cl, 2 dwg
