SU810633A1 - Working device - Google Patents

Description

one

The invention relates to the building materials industry, in particular to the equipment of glass fiber factories for the production of fibers by melt blown energy carrier.

Constructions of devices for treating a melt jet of thermoplastic materials by high-speed air flow or steam are known. Such devices are made in the form of a chamber equipped with a nozzle, designed like a Loval nozzle, with a nozzle for supplying the energy carrier.

Spun plates are used to form the melt jets of the required diameter, and an electric current 1 is passed through the plate to obtain the melt jet of the required viscosity.

In installations with such devices for treating the melt jets, the productivity and quality of the fiber produced is limited by the diameter of the energy jet processed by the melt jet leaving the feeder die.

This is due to the fact that with a spinneret diameter of 7-8 mm, energy carrier flows preferentially blow off the outer layers of the melt. As a result, the number of non-fibrous inclusions in the resulting fiber is greater than the required rate.

The use of feeders, forming the jet

melt, seriously complicates installation and disassembly, creating operational difficulties.

The closest technical solution to the invention is a working device, including a housing, energy supply pipes, a blowing nozzle with a confuser 2.

The disadvantage of this device is the use of feeders, since the presence of a spin plate equipped with current leads in such a feeder complicates the design of the working unit, requires the use of alloys for its production, which, besides the required temperature resistance, also has a high resistance to melts and low wettability.

When working with rock melts, most often characterized by a small generation interval and a crystallization temperature close to it, the proposed device seriously hampers the mining process.

The aim of the invention is to improve the quality of the fibers obtained from the melt of the thermoplastic material.

The goal is achieved by the fact that in the working device, which includes the housing, the energy feed nozzles,

blowing nozzle with confuser, the body is divided into chambers; injection, bubbling and blowing, each of which is provided with an energy-supply pipe, the pressure chamber is isolated from the bar-type lattice partition, the bubbling chamber is equipped with a melt supply pipe and separated from the razduvochnoy plate, and in the opening of the molten conic nozzle, a narrowed conical pipe was inserted into the opening and had a razduvochnoy plate, and in the opening a narrowed conical nozzle, which was closed with a blown plate, and a circular conical pipe was inserted into the opening and had a razduvochnoy plate, and a circular conical pipe was inserted in the opening, and a razor-shaped plate was inserted into its opening, a circular wall with a blown melted valve, and a circular conic pipe was inserted into the opening of the melt; confuser blow nozzle with a gap. In so doing, the plate is made with radially mounted relative to the opening of the hollow conical nozzle, guides entering the bubbling chamber.

FIG. 1 shows the proposed device in section; in fig. 2 - section A-A of FIG. one.

The device includes a housing 1 mounted in the roof of the feeder of the furnace and immersed in the melt thermoplastic material. The case of the device is equipped with a nozzle 2, through which the melt enters the production. In the lower part of the housing of the device, the bubbling chamber 3 and the discharge chamber 4, which is connected to the nozzle 5. The bubbling chamber is connected to the discharge orifices 6 made in the baffle 7. The bubbling chamber of the case is equipped with guides 8 radially mounted relative to the orifice of the plate 9 , and connected to the nozzle 10. The hole of the plate 9 is filled with a hollow conical nozzle 11, which enters the nozzle 12 with a gap, located in the blowing chamber 13, equipped with a nozzle 14.

Use the described device as follows.

From the feeder of the furnace, the melt of thermoplastic material enters the casing of the device 1 through the pipe 2 and directly into the bubbling chamber 3, partially filling its cavity. The energy carrier supplied to the injection chamber 4 through the nozzle 5 through the holes 6 of the lattice partition 7 rushes into the bubbling chamber, the energy carrier foams the melt, increasing the contact surface. At the same time, the foamed melt fills the channels formed between radially mounted 8 in the bubbling chamber radially located with respect to the opening of the plate 9. The energy carrier fed to the bubbling chamber through the nozzle 10 carries the foamed melt to form fibers that through the hollow conical nozzle 11 enter the nozzle 12 of the blowing chamber 13. Through the pipe 14, an energy carrier is fed into the blowing chamber, which draws the fibers to the required length.

Thus, the use of a working device of this design improves the quality of the staple fibers obtained; eliminates the need for heating and the use of electricity for this, simplifies installation and operation of the device.

Claims (2)

1. A working device including a housing, energy supply nozzles, a blowing nozzle with a confuser, characterized in that, in order to improve the quality of the fibers obtained from the melt of the thermoplastic material, the housing is divided into chambers; injection, bubbling and blowing, each of which is provided with an energy-supply pipe, while the pressure chamber is isolated from the bubbling lattice and the partition, the bubbling chamber is equipped with a melt supply pipe and is separated from the blow-off plate, and a hollow conical nozzle is inserted into its opening and has a narrowed conical nozzle that has a wall, a hollow conical nozzle, a narrowed cone, and a wall with a blown plate, and a hollowed conical nozzle, which had a wall, has a wall that has a hollow conic nozzle, which had a narrowed opening and a wall that had a hole in it, a hollow conical nozzle, which had a hole, had a narrowed conical nozzle that had a wall, a conical hole, a hollowed cone, and a ramped hole. confuser blow nozzle with a gap. 2. The production device according to claim 1, characterized in that the plate is made with guides radially mounted with respect to the opening of the hollow conical nozzle and entering into the bubbling chamber. Information sources, taken into account in the examination 1.Tobolsky G.R. Mineral wool and articles made from it. Chel Binsk. South Ural book publishing house, 1968, p. 237. 2. USSR author's certificate number 565890, cl. With OZV 37/06, 1975. /four