RU12567U1 - DEVICE FOR PRODUCING FIBER FROM ROCK MELT - Google Patents

Abstract

1. A device for producing fiber from a melt of rocks, including a housing formed by the end and side walls, a die plate fixed to the bottom of the housing, current leads connected to the end walls and perforated upper and lower heating screens, characterized in that it contains an additional perforated heating screen rigidly connected to the end walls of the casing and placed above the upper heating screen at a height H equal to 1.5 - 2.0 h is the distance between the upper and lower heating by cranes. 2. The device according to claim 1, characterized in that the additional screen is made W-shaped inverted, having a height h, and h / H = 0.4 to 0.8.

Description

Device for producing fiber from rock melt

The utility model relates to devices for producing fiber from mineral melts, namely, from a melt of rocks, for example, basalt.

Certain difficulties arising in the production of continuous fibers from rock melt are associated primarily with the specific features of these high-temperature materials - a narrow melting and crystallization interval, which ensures a narrow range of operating temperatures for fiber production.

One of the main problems solved to obtain high-quality continuous fiber is to obtain a temperature-homogeneous homogeneous melt.

Known multi-filler feeder for the manufacture of continuous fiber from rocks, comprising a housing, current leads connected to it and a die plate with a convex perforated heating screen placed above it (p. RF No. 2087435, MPK SOZV 37/09, pr 02.11.93g. , Op. 20.08.97 g.).

This feeder creates a fairly uniform melt in temperature and viscosity in the fiber formation zone. However, it is not possible to achieve temperature uniformity of the melt along the entire length of the vessel, as a result of which a sufficient melt pressure is not ensured.

MPK6SOZV37 / 09

plates and the possibility of heating the melt distributor in the form of a gable roof, the ridge of which is placed across the die plate (Sv-in P.M. RF. No. 7100, MPK POPs 37/09, pr. 15.07.97, op. 16.07.98. )

This design provides a certain temperature uniformity of the entire spunbond field.

However, the known device for molten rocks cannot provide the melt from the furnace bath to the die feeder in the required volume and, therefore, the stability of the process due to the high viscosity of the melt in the zone located above the distributor.

Closest to the claimed utility model is a device for producing fiber from a melt of rocks, comprising a housing formed by end and side walls, a die plate in its bottom with means of its strengthening, current leads connected to end walls and perforated upper and lower heating screens (c. No. 99104958, IPC POPs 37/09, pr. 10.03.99). SR-.VO Not I..M. PQ ;; I07K, 01. 6.Sb. 99).

Such a device ensures the temperature uniformity of the melt supplied to the spinneret plate along the width, length and height of the device, providing an increase in its productivity.

However, the process of forming the filament on the bottom of the indicated device is not stable due to inconsistent melt level due to the fact that when passing through the shaft of the furnace feeder the melt cools down, its viscosity increases and, thus, the flow rate of the melt from the furnace bath to the die required volume for the process in terms of productivity.

fiber production by providing melt to the die feeder in the required volume by additional heating of the cooling melt in the furnace feeder shaft.

The problem is solved as follows.

A device for producing fiber from a melt of rocks, including a housing formed by end and side walls, a die plate fixed to the bottom of the housing, current leads connected to end machines and upper and lower perforated heating screens, according to the claimed technical solution, contains an additional perforated heating screen, rigidly connected to the end walls of the housing and placed above the upper heating screen at a height H equal to 1.5-2.0 h / - the distance between the upper and lower n heating screens. The additional screen is made of a W-shaped inverted form having a height h, with h, / H 0.4 - 08.

The presence of an additional heating screen rigidly connected to the end walls of the housing and placed above the upper heating screen at a height H equal to 1.5-2.0 hf - the distance between the upper and lower heating screens provides additional heating of the cooling melt entering through the shaft of the furnace feeder , increasing the flow of melt to the die plate in the volume that is necessary to ensure a constant level of melt in the die plate, ensuring the stability of the process in fiber production.

In order for the required amount of melt to enter the die plate, a certain ratio of the parameters of the relative position of the heating screens, as well as a certain height of the additional heating screen, must be observed. At H2h. the melt cooled in the furnace feeder shaft with an additional heating screen will cool down when it reaches the upper heating screen, its viscosity will increase, the melt flow to the die plate will decrease, and its required level in the fiber formation zone will not be obtained to ensure process stability. At 5 h /, the melt will not be heated in the furnace feeder shaft, as a result of which the melt entering the fiber formation zone will also not be sufficient to ensure the stability of the process.

The implementation of the additional heating screen in the form of an inverted W height h., Equal to 0.4-0.8 h. / N, it is necessary and sufficient for heating the melt in the furnace feeder shaft to the required temperature and viscosity. With its vertices, the additional heating screen heats the low-temperature zone of the melt in the furnace feeder shaft, providing a homogeneous melt over the entire surface of the additional screen

The presence of essential features distinctive from the prototype allows us to recognize the claimed utility model as new.

The possibility of using the claimed utility model in industry allows us to conclude that it meets the criterion of “industrial applicability.

In FIG. 1 presents the inventive device, a longitudinal section; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - the claimed device, a cross section.

A device for producing fiber from a melt of rocks includes a housing formed by end 1 and side 2 walls, a spinneret plate 3 in its bottom with a means of strengthening it in the form of a cooled support 4 along the central longitudinal axis of the spinneret

plate 3 mounted with the possibility of interaction with the lower surface. To heat the structural elements and the melt, the device is equipped with current leads 5 connected to the end walls 1 and a perforated heater 6 located inside the housing, which is rigidly mounted on the die plate 3 above the support 4. The device is equipped with upper 7, lower 8 and additional 9 heating elements of different height to the die plate 3 perforated screens. The additional screen 9 is made in the form of an inverted W and is installed at a height H equal to 25 mm., And the height h of the additional screen 9 is 16 mm.

The device operates as follows.

The rock melt (basalt) enters from the furnace feeder shaft into the housing formed by the end and side walls on an additional heating screen 9, heating the furnace feeder shaft and the melt passing through the shaft, which allows partially forming a composition homogeneous in temperature. The heated melt, entering the upper chamber formed by heating 7 and 8 screens and side walls 2 of the housing, is additionally heated. In this case, an even flow of melt passing through the screen 7 is formed, which is directed to the spinneret plate 3. In the lower closed chamber formed by the spinneret plate 3 and the lower heating screen 8, the melt is additionally heated before it is fed into the fiber formation zone. As a result of a three-stage heating, the basalt melt approaches the fiber formation zone, having the same temperature and viscosity. The yarn obtained from the fiber enters the winding device (not shown).

in the table we give an example of performance indicators of the proposed device for producing fiber from a melt of rocks, namely from basalt.

Technical advantages of the claimed device are identified in comparison with the known technical solutions of the same problem, indicating the availability of their specific data, including the closest analogue.

The table shows that the presence of a new structural element and a new size ratio in the inventive device provides a higher result in ensuring the stability of the technological process for producing continuous fiber.

The performance of the claimed and known devices for producing fiber from a melt of rocks

Table

Claims (2)

1. A device for producing fiber from a melt of rocks, including a housing formed by the end and side walls, a die plate fixed to the bottom of the housing, current leads connected to the end walls and perforated upper and lower heating screens, characterized in that it contains an additional perforated heating screen rigidly connected to the end walls of the housing and placed above the upper heating screen at a height H equal to 1.5 - 2.0 h ₁ - the distance between the upper and lower heating screens. 2. The device according to claim 1, characterized in that the additional screen is made of a W-shaped inverted form having a height of h ₂ , with h ₂ / N = 0.4 - 0.8.