SU1361203A1 - Arrangement for delayed cooling of chemical filaments - Google Patents

Abstract

The invention relates to the production of chemical filaments, in particular, equipment for cooling chemical filaments obtained from polymer melts, and improves their quality: by ensuring uniform cooling by tapering the inner surface of the heat chamber with a slope towards the longitudinal axis of the filter kit. 2 hp ff, 4 ill.

Description

The invention relates to the production of chemical filaments, namely, equipment for cooling chemical filaments obtained from polymer melts.

The aim of the invention is to improve the quality of the yarns by ensuring uniform cooling when it is intensified.

Figure 1 shows the proposed device, a longitudinal section; in Fig.2 a section aa in Fig.1; Fig. 3 shows a longitudinal section of the device; figure 4 - section bb in figure 3.

The device comprises a molding head 1 with a filler 2 for the extrusion of elementary filaments 3 and a device for the slow cooling of the nsty, containing the heat chamber 4 for providing the slow cooling of the filament, the collector 5-for

The 20 surface of the wall 7 is provided with a liquid high-temperature organic coolant (BOT), cd-; The latter is supplied through a stop valve 11 to the lower part of the heat chamber 4.

heat chambers can be carried out from the coolant circuit, common to the molding heads, the melt line and the pressure unit of the spinning machine (not shown). Lowering the temperature of the inner wall 7 in the range from 290 to 250 ° C to supply cooling air to the through channels 6 located in the side 25 After filling the working volume of the surface 7 of the heat chamber 4, the heat and heat chambers 4 heat carrier removes the insulating gasket 8 -, c through a shut-off valve 12. Heating is valuable for eliminating the possibility of heating the air in the collector 5, the suction unit 9 with the nozzle 10, where 30 channels 6 exit, ensuring the removal of the NMS and the cooling air from the common pipeline port (not shown), shut-off valves 11 and 1 2 for supplying and discharging coolant, valve 13 for controlling the amount of air supplied to the collector 5, heat insulation 14, ensuring the safety of the thermal camera and eliminating heat loss to the environment, a blower shaft that provides cooling of the elementary filaments, a one-sided blower 15 (FIG. 1) or a radial blower 16 (FIG. 3). Inside the 45 renn the surface 7 of the heat chamber 4 may have the form of an inclined cylinder35

40

pa (fig.)) with one-sided blowing or a truncated cone (fig. 3) with a radial blowing, i.e. the inner surface 7 is inclined with respect to the longitudinal axis of the spin pack.

The device works as follows.

Molded yarns 3, extruded from dies 2, located in the molding head 1, enter the heat chamber 4, where, they are under the influence of convection 50

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it is baked by the flow rate of cooling air supplied to the manifold 5 through the valve 13.

The design feature of the proposed device is to provide the same temperature conditions for the forming thread bundle, since all of them are located parallel to the side surface 7 of the heat chamber 4. Corresponding to the inclined cylindrical shape of the thermostating zone to the position of the forming flow beam 3, eliminates the occurrence. structural heterogeneity in them and greatly improve their uniformity.

A heat chamber 4, having the shape of a truncated cone (Fig. 3), also provides shaped yarns with uniform structural properties.

The conformity of the beam forms to the thread temperature range is achieved only when using the radial cooling method in this case, when

Heat from the heated side surface 7 of the heat chamber 4 is cooled slowly. After thermostating

The filaments 3 are cooled in the blowing charge by one-sided blowing 15 by the transverse flow of air. Under the action of the cooling air flow, as well as the temperature of the medium inside the heat chamber 4, the formable threads 3 occupy an optimal position in it, in which all the elementary threads 3 are parallel to the side surface 7 of the heat chamber, made in the form of an inclined cylinder. The 3 low molecular weight compounds that are introduced by the threadable yarns are removed from the thermostating zone by the suction unit 9 and removed via the nozzle 10. The heating of the inner surface of the wall 7 is provided by a liquid high temperature organic heat transfer fluid (BOT) cd-; The latter is supplied through a stop valve 11 to the lower part of the heat chamber 4.

After filling the LOC of the working volume of the heat chamber 4, the coolant removes through the shut-off valve 12. Heating

heat chambers can be carried out from the coolant circuit, common to the molding heads, the melt line and the pressure unit of the spinning machine (not shown). Lowering the temperature of the inner wall 7 in the range from 290 to 250 ° C after completing the working volume of the heat chamber 4, the coolant removes through the shut-off valve 12. Heating

After filling the LOC of the working chamber of the heat chamber 4, the coolant removes through the shut-off valve 12. Heating

it is baked by the flow rate of cooling air supplied to the manifold 5 through the valve 13.

The design feature of the proposed device is to provide the same temperature conditions for the forming thread bundle, since all of them are located parallel to the side surface 7 of the heat chamber 4. Corresponding to the inclined cylindrical shape of the thermostating zone to the position of the forming flow beam 3, which is rejected by the cooling air, heterogeneity in them and significantly improve their uniformity.

A heat chamber 4, having the shape of a truncated cone (Fig. 3), also provides shaped yarns with uniform structural properties.

The conformity of the beam forms to the thread temperature range is achieved only when using the radial cooling method in this case, when

air flow is radially directed, i.e. to the center of the bundle of formable threads.

Claims (3)

1. A device for slow cooling of chemical threads, comprising a heat chamber, means for supplying a cooling agent, means for suctioning low molecular weight compounds mounted under the spinnerets, a blower well with means for supplying cooling air, the purpose of increasing the quality of the filaments by ensuring uniform cooling during its intensification, the inner surface of the heat chamber is made with an inclination relative to the direction the longitudinal axis of the spin pack. I, 2. The device according to claim 1, about tl and - the fact that the heat chamber is made in the form of a cylinder or a - broken cone. 3. The device according to claim 1, characterized in that in the side area of the COOLNESS of the heat chamber there are channels for the supply of a cooling agent. 13 9M.Z ten W Fig.Z Editor O. Yurkovetska Compiled by VLslinayev Tehred I. Veres Proofreader M. Sharoshi 6200/31 Circulation 428 Subscription VNIIPI USSR State Committee. for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5  Enterprise of printing and printing enterprise, Uzhgorod, ul, Proektna, 4