RU1811541C - Die set - Google Patents

Abstract

SUMMARY OF THE INVENTION: a spinneret kit comprises a housing, a spinneret installed therein, a filter bag having a distribution plate, an elastic seal, and means for securing elements in the housing. The elastic seal is made in the form of a corrugated shell placed between the die and the filter bag. The latter is fixed on the free end of the corrugated shell with the possibility of joint longitudinal movement with it. The kit contains an additional distribution plate. 1 ill.

Description

The invention relates to the production of chemical fibers and relates to spunbond kits for forming chemical fibers.

 The purpose of the invention is to improve performance.

The object is achieved in that the spinneret kit comprises at least one spinneret installed in the housing, as well as a filter bag having a distribution plate, an elastic seal in contact with the conical surface at one end, and means for fixing the elements in the housing.

There is an additional distribution plate located inside the elastic seal.

The elastic seal is made in the form of a corrugated shell placed between the die (s) and the filter bag, which is fixed on a free

the end of the corrugated shell with the possibility of joint longitudinal movement along the axis of the spinneret kit ..

The means of fastening all elements in the housing, made in the form of a clamping nut, has a flange plate in which die (s) are pressed in. The inner surface of the flange is made in the form of a cone directed by a large base towards the filter bag.

Between the inner conical surface of the flange of the plate and the additional distribution plate, the end of the corrugated shell is clamped.

The novelty of the proposed device lies in the presence of the following distinctive features:

1, the die kit comprises an additional distribution plate located inside the elastic seal.

00

with

4

 SLE

2. The elastic seal is made in the form of a corrugated shell placed between the die and the filter bag.

3. The filter bag is fixed at the free end of the corrugated shell with the possibility of joint longitudinal movement.

4. The fastener has a plate

With burtikom ..: -.-.

5. The inner surface of the shoulder is made in the form of a cone directed by a large base towards the filter bag.

6. Between the inner surface of the shoulder and the additional distribution plate, the end of the corrugated shell is clamped.

The positive effect created by the die kit is as follows:

1. Leaks of expensive dope liquid are eliminated, i.e., the reliability in use and the efficiency of the molding process are increased.

2. Provides a longer period of operation without stopping to clean the spinneret kit and reload it.

The invention is illustrated by a specific example and is illustrated in the drawing, which shows a General view of the spinneret kit in section.

The filter kit comprises a housing 1 in which a filter bag 2 is installed, including a distribution plate and filter material, a corrugated envelope behind an elastic seal, an additional distribution plate 4 with openings 5 located inside the corrugated envelope 3, and a plate 6 with a die 7. At the free end 8 of the corrugated shell 3, a filter bag 2 is fixed with the possibility of joint longitudinal movement. The end 9 of the corrugated shell 3 is sandwiched between the additional distribution plate 4 and the inner surface of the shoulder 11 of the plate 6. The inner surface 10 of the shoulder 11 is made in the form of a cone directed by a large base towards the filter bag 2. The inner 12 and outer 13 surfaces of the additional distribution plate 4 can have a spherical or flat shape.

The plate 6 with the end surface of the shoulder 11 is pressed against the housing 1 by the fastening means 14, made in the form of a clamping nut. The filter bag 2, the corrugated sheath 3 and the additional distribution plate 4 form an inner chamber 15 into which the filtered (purified) dope liquid 16 is pumped by a gear pump (not shown) under pressure P.

The die kit works as follows,

The dope liquid 16 under pressure P enters the cavity of the housing 1 above the filter bag 2. After filling this cavity, the dope liquid 16 begins to exert pressure on the filter bag 2. Due to the created pressure, the free end of the corrugated shell 3 with the filter bag 2 is lowered until until the elastic forces of the corrugated shell 3 stop this movement. Then

5, the dope liquid 16 is forced through the filter material of the filter bag 2 and enters the inner chamber 15, where it accumulates until it is completely filled.

0 at this moment, an additional distribution plate 4 is self-installing on the inner conical surface 10 of the flange 11 of the plate 6 and the end 9 of the corrugated shell 3 is rigidly clamped.

5 As soon as the pressure above the filter bag becomes equal to the pressure in the inner chamber 15, the dope liquid 16 begins to be forced through the holes 5 in the additional

0 to the distribution plate 4 and enter the die 7. Further, the dope liquid is forced through the dope holes in the bottom of the die into a zone with a coagulating medium in which a bundle of elementary fibers forming a freshly formed filament (not shown) is formed. After that, the normal operation of the spinneret kit begins.

In this mode, the spindle kit

0 operates until the filter material of the filter bag 2 begins to become clogged. As the filter material of the filter bag 2 becomes clogged, the resistance increases by

5, and its smaller area begins to work (filter), At this moment the pressure above the filter bag 2 increases, under the influence of which the latter drops (compresses), creating additional pressure in the inner chamber 15. Under the influence of the increasing pressure of the dope liquid 16 above the filter bag 2, a reliable seal of the end 9 of the corrugated shell 3 with an additional distribution plate 4 is provided on the inner conical surface 10 of the flange 11 of the plate 6. And the radial deformation of the corrugated shell 3 from growing pressure of the filtered spinning liquid 16 within the chamber 15 allows

to carry out absolute and reliable sealing along the increasing outer diameter of the corrugations of the elastic corrugated shell 3 and their full compression in the housing 1. As the internal pressure increases, this compression and, consequently, the sealing increases more and more, i.e., the spinneret set works for self-sealing.

Claims (1)

SUMMARY OF THE INVENTION A filter kit comprising at least one die in a housing, a filter bag having a distribution plate, an elastic seal in contact at one end with a taper surface, and means for securing elements in the housing, including and with the fact that, in order to improve operational properties, it contains an additional distribution plate located inside the elastic seal, the latter being made in the form of a corrugated shell placed between the die and the filter bag, which is mounted on the free end of the corrugated shell with the possibility of joint longitudinal movement, and the fastening means has a plate with a shoulder, the inner surface of which is made in the form of a cone, directed by a large base towards the filter package, and between the inner surface of the shoulder and an additional distribution plate, the end of the corrugated shell is clamped. fi | x. jFioft the pump .