SU925255A3 - Apparatus for heat treating of yarn from synthetic fibers - Google Patents

Abstract

1424652 Heating yarns N KODAIRA 21 March 1974 [3 April 1973] 12752/74 Heading D1F In apparatus for heat treating running yarns comprising a series of elongate spaced vessels 1 each providing a (grooved, as at 2, or channelled) heated surface over and in contact with which yarn passes, the upper portion of each vessel communicating by pipe 5 with an upper common pipe 4 and the lower portion communicating by pipe 7 with a lower common pipe 6 and the vessel being filled with hot medium liquid 9 so as to cover a heater 8, the removal of accumulated unwanted gaseous material is effected as required by (repeated) opening and closing of a manually operated (needle) valve 12 in a pipe line 11, 15, between pipe 4 and a gas reservoir 16. When filled, the latter is exhausted by suction applied to a normally closed end of a tube 17. The reservoir may be external of (as shown) or within a casting 20, with a cooling wall thereof exposed to atmosphere. The valve 12 may be mounted above pipe 4 so that condensed liquid will not be trapped therein, Fig. 4 (not shown).

Description

(54) DEVICE FOR HEAT TREATMENT OF YARN FROM SYNTHETIC FIBERS

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The invention relates to apparatus for the heat treatment of yarn from synthetic, preferably long, fibers during movement of the yarn in contact with the heating surface.

The closest to the proposed technical essence and the achieved result is a device for heat treatment of synthetic fiber yarn, containing vertically arranged heaters installed parallel to each other and having containers connected in the upper and lower parts by channels, a heating element placed in the lower channel containers, and a means for regulating the pressure of the working medium, having a gas tank 11.

A disadvantage of the known device is the Impossibility of providing high-quality processing of the yield.

The purpose of the invention is to improve the quality of processing yarn by ensuring uniform distribution

heat on the heating surfaces and the possibility of removal of gas and air impurities from condensate. This goal is achieved by

5 that the means for regulating the pressure of the working medium has a valve for venting gas impurities attached on one side to the upper channel of the tanks and on the other to the gas tank, with a condensate drain tube mounted on the bottom of the gas tank.

FIG. 1 shows a device for heat treatment of synthetic fiber yarn, longitudinal section; in fig. 2 and 3 - the same, versions; in fig. 4 is a view of And figure 1.

A device for heat treatment of synthetic fiber yarn contains

20 parallel vertically arranged heating elements made in the form of tank 1. Each tank 1 has a groove or groove 2 for conducting the treated

25 YARNS and back wall 3. A common upper pipe is mounted on the side of tanks 1, connected by means of a pipe 5 of relatively large diameter to tank 1. In the lower part of pipe 6, having a bottom 7, a heating element 8 mounted in a liquid heating medium is mounted 9. The device has a pipe 10 connecting the bottom of the upper pipe with the lower pipe 6 and serving to return condensate to the heating medium 9. pipe 11, valve 12 with needle 13, rod 1 for opening and closing valve 12 by means of needle 13. zhen 1k on one side is protected forces the background 15 to seal the valve; on the other hand, carries the head 16 for opening and closing it. The device is equipped with a gas reservoir 17 for gas impurities with a capacity of about 1000 sms with an external wall for cooling connected to valve 12 through pipe 18. On the other hand, gas reservoir 17 has a pipe 19 with a closed end. The gas tank 17 can also be installed inside the housing 20 (FIG. 2), and the valve 12 can be installed above the housing (FIG. 3). The device works in the following way. After the heating element 8 is turned on, the liquid heating medium 9 in the lower tube 6 is heated until evaporation, the tanks 1 are filled with heated steam and are uniformly heated to heat the treated yarn, which passes on the same foreheads 2, and the steam leaves the upper part of the tanks 1 in the upper pipe 4. In the pipe k, the vapor is cooled, turning into a liquid. The condensed liquid through pipe 10 returns to the heating medium 9 in pipe 6. During prolonged operation of the device, gas impurities accumulate on the inner surface of the tanks 1 and in the pipe, which impede the circulation of the vapors of the heating medium and tend to mix with the evaporated medium, while the temperature in the middle part of the tanks 1 decreases. At this point, if the valve 12 open, gas impurities having a low boiling point are quickly transferred to the gas tank 17 and, consequently, the pressure in the tanks becomes lower than in the upper pipe k, and when the evaporated liquid condenses, its internal Adding falls again. By several opening and closing of the valve 12, the pressure in it is equalized with the pressure in the upper tube C, so that the temperature drop in the upper part of the tank 1 is compensated. When the gas tank 17 is full and can no longer absorb gas impurities, the valve 12 closes and the end of the tube 19 opens to eject the liquid heating medium, after which the gas or Air from the gas tank 17 is removed with a suction pump and the end of the tube 19 is closed. In the tanks 1 and the lower tube 6, the internal cavities of the tanks 1 are released, and the valve 12 (normally open) is closed immediately before entering the heating fluid. The presence of a valve for the removal of gas impurities and a pipe for the removal of condensate allows for cleaning the internal cavity of the tanks and pipes, which contributes to the uniform distribution of heat over the heating surface with which the treated yarn interacts. 4 of the invention, a device for heat treatment of yarn of synthetic fibers, comprising vertically arranged heaters installed parallel to each other and having containers connected in the upper and lower parts by channels, a heating element placed in the lower channel of the container, and means for adjusting the pressure of the working medium, having a gas tank, in order to improve the quality of the yarn processing, the means for adjusting the pressure of the working medium has a valve for venting gas impurities, connected on the one hand to the upper channel of the tank, and on the other hand to the gas tank, while in the bottom of the gas tank a tube for condensate drainage is mounted. Sources of information taken into account in the examination 1. USSR patent on the application ff 1697167 / 28-12, CL. 02J 13 / 00,1971.

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Claims (1)

Claim A device for heat treatment of synthetic fiber yarn containing vertically arranged heaters installed parallel to each other and having containers connected in the upper and lower parts of the channels, a heating element placed in the lower channel of the container, and means for adjusting the pressure of the working medium having a gas reservoir, On the one hand, in order to improve the quality of processing the yarn, the means for adjusting the pressure of the working medium has a valve for removing gas impurities, connected to one oron the upper channel capacity, and on the other hand - to the gas reservoir, the gas reservoir in the bottom of the tube is mounted for condensate.