SU850624A1 - Device for making melt spray - Google Patents

Description

The invention relates to the use of building materials, in particular, to equipping glass fiber factories to obtain fibers by blowing melt with energy carrier and continuous filaments by stretching with rotating drums. Devices are known for producing melt streams from thermoplastic materials. Such devices are made in the form of plates, equipped with dies, to which the floor and current leads are attached, or in the form of a boxed case, equipped with a receiving pipe, a distribution grid with a spin plate, and current leads. The process of forming the jets is carried out by passing the melt through the nozzle holes of the feeder plastics, and in order to obtain the melts of the required viscosity, an electric current is passed through the plate. In installations with such devices, the quality of the resulting products deteriorates over time. the effects of the melt increase in diameter. In addition, in view of the good wettability by the melt of the material of the feeder, the spinnerets swim. This leads to forced shutdowns in installations. The use of die feeders seriously hampers the use of heat-resistant alloys instead of scarce and expensive platinum-rhodium alloys, widely known as JX today. Due to the low thermal transparency of non-KOTOixdx glass melts, such as basalt, some of the jet does not have time. warm up due to insufficient temperature difference and then quickly cooled, which leads to breakage of the jet, the atomic device is the closest technical solution to the proposed one and includes a feeder, robotic body, suction cup, distribution grid, spinneret plate and current leads 1. The disadvantage of the known The device is an extruded spin plate of the plate through which heat is transferred to the melt formed in the form of jets. The heat resistance and heat resistance of the plate material used in the manufacture of glass fibers should be very high while maintaining a high chemical resistance. This almost does not satisfy nn one of

currently known heat resistant alloys. When working with rock melts, most often characterized by a small generation interval and a crystallization temperature close to it, known structures seriously impede the mining process.

The purpose of the invention is to increase the quality of the fiber.

The goal is achieved by the fact that in the device; to produce melt jets containing a box-shaped body with a suction inlet and mounted in the first melter jets, as well as current leads, the melt jet former is made in the form of a series of vertical plates installed with a gap, connected in pairs at the bottom with hollow conical protrusions with holes and jumpers installed at the bottom and at the top between the paired plates, as well as between the extreme plates and the body. At the same time, the jumpers, installed at the top between the extreme plates and the JttcoM core, are made of melt-resistant The electrically insulated materi / 1a, and the bridges, installed below between the paired plates, as well as between the outer plates and the body, are made of porous refractory material.

FIG. 1 shows the proposed device, the cut; in fig. 2 - the same, side view, section; in fig. 3 - the same, top view.

The proposed design includes a suction inlet 1 mounted in a box-shaped housing 2. Inside the box-shaped housing insulated from it. A former is mounted to the melt jets, made in the form of a series of vertical plates 4 installed with a gap, connected below in pairs with conical protrusions 5 and provided with holes 6, and at the top connected by bridges between each pair of plates. The formed cavities 7 between each pair of vertical plates are closed by plates 8 of a porous material, and the gaps between the outer plates and the core empty blocked melt-resistant jumpers 9, the body is equipped with a pipe 10 for supplying a mixture of combustible gas with air. To the extreme vertical plates attached current,: carts 11 and 12.

The device works as follows;

From the feeder of the furnace, the melt through the inlet pipe 1 enters the box-shaped body 2 and, spreading over the surface of the forming unit 3 of the melt jets, penetrates into the gaps between the pairs of vertical plates 4 and ya directs to the conical protrusions 5, which is fed through the holes b. the melt forms, in the form of a series of jets, in the insulated cavities 7 between the vertical plates and the bridges 8 and 9 through the pipe 10 a gas-air mixture is fed, which, having penetrated through the porous plates 9, ignited. At that, giving additional heat to the melt. An electrical current is passed through the current leads 11 and 12, which allows maintaining the required temperature conditions of the melt jet s former.

Thus, the use of the device for producing melt jets of the proposed design allows improving the quality of the fibers and continuous filaments obtained by eliminating the melt temperature gradient along the length and height of the jet former.

Claims (3)

1. A device for producing melt jets, a cS box box body with a suction inlet and mounted in the first melt jet former, as well as current leads, in order to improve the quality of the fiber, the melt jet former is made There are a number of vertical plates installed with a gap, connected in pairs BOTTOM by hollow conical protrusions with holes, and jumpers installed at the bottom and top between the paired plates, and also between the outer plates and the body. 2. The device according to claim 1, characterized in that the jumpers are installed at the top between the outer plates; and the casing is made of a melt-resistant electrically insulating material. 3. The device according to paragraphs. 1 and 2, characterized in that the bridges installed below between the spa plates and between the outer plates and the housing are made of porous refractory material. 5, Sources of information, taken into account in the examination 1, A.Ya. Shkolnikov Glass staple fiber. M., Himi, 1969, p. 203. gjui.j 12 / rig. 2  // fig. 3