Compact module for the wet spinning of chemical fibres

Compact module for wet spinning of chemical fibres, of the type comprising a spinning head (F) of a limited number of tows (S), each one consisting of a plurality of continuous filaments, relative supply pumps (P) of the spinning solution, a coagulation tank (V) containing a coagulation solution, and a plurality of drive rollers (2) and respective idle diverter rollers (3) which determine a zigzag path of the tows (S) downstream of the spinning area, comprising rectilinear lengths along which liquid-based treatments are carried out on said tows (S);

• wherein the rectilinear lengths of said zigzag path are horizontal and said liquid-based treatments on said tows (S) are carried out in horizontal treatment trays (4) of the spillway type;
• wherein said treatment trays (4) comprise at least one washing area (11) provided with two opposite spillways (W);
• wherein the tows (S) are evenly wetter by a treatment liquid supplied to said washing area (11), without imposing any diversion to said tows (S) with respect to the length of rectilinear and horizontal path between two drive rollers (2);
• wherein each of said treatment trays (4) comprises at least one treatment step employing a treatment liquid, each of which is comprised of:
• a said washing area (11) having two opposite spillways (Q), the bottom of which has a surface finish apt to aid the turbulence of the treatment liquid;
• an inlet (10) of the treatment liquid into said washing area (11);
• at least two main outlets (12) of the treatment liquid, which collect the treatment liquid coming from the two opposite spillways, respectively (W);
• and
• an additional outlet (13) of the treatment liquid, which collects the dripping from the tows (S) from the wash area (11), said additional outlet (13) being arranged immediately downstream of each main outlet (12), in the advancement direction (F) of the tows (S);
• wherein said treatment tray (4) is fastened in an adjustable manner to said support plate (1) by means of rigid arms (8), projecting from the lower part of the treatment tray (4) and hinged thereto, which cooperate with respective angular joints (9), each one provided with a cavity wherein a corresponding rigid arm (8) is housed and tightened, said angular joints (9) being integral with the support plate (1) in correspondence of a hole on the same.