CS233205B1 - Device for continuous filtration of polymer melts - Google Patents

Abstract

The device for continuous filtration of polymer melts, especially in the production of synthetic fibers, consists of a filter body with a filter chamber, an inlet and outlet slot for the passage of the filter seam from both sides, clamped between two perforated plates.

Description

233205 2

BACKGROUND OF THE INVENTION The present invention relates to a continuous melt filtration apparatus, in particular fiber-forming polymers, comprising a filter body having a filter chamber provided with an inlet and outlet chute and a filtering sewage filtering chamber which reduces the need for filter filtration.

For continuous filtration, a filter similar to the one used so far has been used, in which the filtering sieve is moved by pulling the filter suture to the outlet side by means of sliding filter sieves as shown in Ss. AO 196876, Cs. AO 196877, Cs. AO 196878, Cs. AO 203595. In this apparatus, the mechanical pulling filter is sewn depending on the sensed pressure of the filtered melt prior to its entry into the filter chamber. When moving the filter sieve through a filtering device, there is a need for a force which is a limiting requirement for the quality and design of the filter sieve, whereas a high quality filtration would require a thinner and less rigid, and especially less expensive, filter screen. This increases the cost of the filter material and the cell filtration.

The economy of filtration and the subsequent melt molding of the melt is determined by the quality of the filtration and its trouble-free performance. During the filtration start-up, even with the high-quality and especially solid filter sieves used today, these sieves break out due to failures, production looks and waste increases.

The above drawbacks are eliminated by the continuous melt filtration device of the polymer of the present invention, which consists of a filter body with a filter chamber of an inlet and outlet chute for the passage of a filter screen in which the filter sewn between its displaced perforated plates passing through the filter screen through filter chamber closed by chilled inlet and outlet chute

In the accompanying drawing, a device for continuous filtration of the polymer melts of the present invention is shown schematically in the following section, consisting of a hollow filter material with heating 12 supply channel 9a and a channel 9b for transferring the polymer melt therebetween. The filter chamber 6 in the filter body 2 is blocked by a filter screen 2 squeezed between the upper support perforated plate 14a and the bottom support perforated plate 14b sliding over the support 4. Filter sieve 2 together with both support perforated plates 14a. 14b, the filter passes through the inlet tuned slot 1a and the outlet chilled slot 1b with the channels 2 for cooling medium.

The feed of the filter sieve 2 is performed by a mechanical feed 2 with a drive g, the speed of which is derived from the demands of the pressure sensor 10 on the polymer melt inlet 9a via the actuation control member 11 of the perforated plates 14a. 14b. Behind the outlet chill 2 is a heating zone 13 for releasing the glued abutment plates 14a. 14b from dirty shita 2 ·

A device for continuously filtering the melt-forming polymer of the fiber-forming polymer in a conventional manner.

Supporting perforated plates that fit precisely into each other through a forced mechanical movement into the inlet of the water-cooled inlet of the filter housing with the melt flow pipe, grate, and heating subsequent to the outlet cooling slot. The intermediate sieve perforated support plates transfer the force required to pass them through the full filter, a filter sieve is placed which produces the desired filter medium. It is also possible to change the filter sewn strip as needed, for example, in the production of asymmetric contamination. Upon leaving the outlet web, the filter belt assembly of the support perforated plates comes into the heating zone where the polymer is dispersed throughout the entire length of the perforated plate, thereby allowing it to be separated from the soiled filter cloth.

Claims (1)

OBJECT OF THE INVENTION A device for continuously filtering a polymer melt comprising a body with a filter chamber of an inlet and an outlet smoothed slot for passing a filter sieve and a filter sieve shifting mechanism, characterized in that the filter sieve (5) is clamped between at least two slotted perforated plates (14a, 14b) from a set of plates passing together with the filter screen (5) through the filter chamber (6).