SPINNERET FEEDER FOR PRODUCTION OF A FIBER OUT OF ROCKS

FIELD: production of a fiber out of rocks. ^ SUBSTANCE: the invention is aimed at a raise of productivity, quality of a thread of a continuous fiber and an increase of the device service life. The spinneret feeder contains the heated body formed by the made as a single whole with the coverage lateral walls, the butt walls, the current leads and the spinneret plate with the spinnerets, which is made as a single whole with the lower part of the lateral walls. The body is supplied by a loading pipe. The inlet and average areas of the channel of the spinneret are formed by the a curvilinear surface of the bent form narrowing to the cylindrical section of the spinneret channel at the outlet, the generatrix of which is formed by three radiuses of different value. Inside the body above the spinneret plate there is a heated perforated filtering screen rigidly fixed on the body and rigidly connected with the spinneret plate by three heated stiffening members rigidly fixed to the body and are made in the form of an inverted isosceles trapezium, in which the length of the lower base makes 0.38 of the length of the upper base, and diameters of holes in it are equal to 0.93 of the diameter of the outlet channel of the spinneret. The coverage is inclined to the filtering screen plane at an angle of 2.5° and the angle between a butt wall and the upper plane of the coverage makes 106°. The inlet and the middle areas of the channel surface of the spinneret also may be formed by three truncated cones continuously transferring one into another, the angle of a conicity of which makes 130° - at the channel inlet, 74° - in middle part of these areas and 30° - at the outlet to the cylindrical section of the channel of the spinneret. ^ EFFECT: the invention ensures a raised productivity, improved quality of the continuous thread fiber, increased service life of the spinneret feeder. ^ 5 cl, 4 dwg, 1 tbl