SU1507747A2 - Spinneret cup for producing fibre from silicate melt - Google Patents

Abstract

The invention relates to the production of heat insulating and acoustic building materials, in particular, to the processing of silicate melt into fiber. The goal is to reduce energy consumption due to the turbulence of the gas flow while reducing the finned surface of the body. To do this, in the spunbond bowl, the edges of the ribs are δ = (1/8 - 1/4) L, where L is the length of the rib section between the slots, deviated from the axis in the direction opposite to the bowl rotation through the angle ρ = 9-30 °. 1 il.

Description

The invention relates to the production of heat insulating and acoustic building materials, in particular for the processing of silicate melt into fiber, and is an improvement of the invention according to the main author. St. N EEBZ E.

The aim of the invention is to reduce energy consumption by increasing the turbulence in the gas flow while reducing the finned surface of the bowl body.

The drawing shows a filleting bowl, side view.

The spinner bowl for obtaining the fiber from silicate melt is made in the form of a hollow metal cylinder 2 installed with the possibility of rotation from a shaft 1 rigidly attached to it with annular ribs 3, the edges 4 of which are deflected in the direction opposite to the rotation of the bowl from the axis of the edge on the corner A 9- 30 and the length ((t / 4 - 1/8) 1 and the value of the deviation angle / 3 and the length 5 on the lateral surface of the cy- 25 in the deviated section of the rib S are determined by the intensity of the environmental impact on the outer surface of the cylinder and its resistance laziness during rotation. The existing equipment has a range of 1: 50-1: 30 and the ratio of chasing at operating technologies or between the slots of the same production line of the mineral s in the range of 1: 12-1: | slot holes are located along

lindra 2, the annular ribs of which are made with radial grooves 6 with the ratio of the width of the groove to the radius of the outer side surface of the bowl in

Wool, for example fiber-forming centrifuges, operates at a speed of 1000-6000 rpm. Thus, at a linear speed of rotation of the cylinder no more than 100 m / s angle / 3 9, length S 1, and at a speed not less than 600 m / s angle f 30, length. 1/8 1. At / 3 9 ° and S 1/81 from the bowl height at an angle to its axis to the direction of rotation within ii / 4t f I

 glad.

Wool, for example fiber-forming centrifuges, operates at a speed of 1000-6000 rpm. Thus, at a linear speed of rotation of the cylinder no more than 100 m / s angle / 3 9, length S 1, and at a speed not less than 600 m / s angle f 30, length. 1/8 1. At / 3 9 ° and S 1/81 from How the limits of the ratio of width B of grooves to radius R of the bowl are known

caused by the possibility of flow 40 due to weak turbulence in the flow, not through them, of the cooling medium, and large-scale separation is facilitated

the medium is heated to form a surface film that impedes the cooling medium approach.

The presence of grooves twists the flow of the cooling medium and only partially eliminates the formation of this surface film.

In order to completely eliminate this film, the deviated edges on the fins, which increase the curl of the coolant flow between the fins, are made.

The presence of deflected edges on the ribs during the rotation of the bowl contributes to the occurrence of macroscale separated flows between the ribs, contributing to the intensification of the gas flow turbulization, and, thereby, more

rapid disruption of the film of the heated medium from the outer surface of the bowl, and if a new film of the medium is formed, then with a lower temperature.

The magnitude of the deflection angle / 3 and the length of the deflected portion of the rib S is determined by the intensity of the effect of the environment on the outer surface of the cylinder and its resistance during rotation. Existing equipment on existing technological lines of mineral production

in the deviated section of the rib S, it is determined by the intensity of the environmental influence on the external surface of the cylinder and its resistance during rotation. Existing equipment on existing technological lines of mineral production

Wool, for example fiber-forming centrifuges, operates at a speed of 1000-6000 rpm. Thus, with a linear speed of rotation of the cylinder no more than 100 m / s angle / 3 9, length S 1, and with a speed not less than 600 m / s angle f 30, length. 1/8 1. At / 3 9 ° and S 1/81 due to weak turbulence in the flow, no large-scale tear-offs are formed.

heat dissipation surface. The limits of the ratio A between the grooves to the radius R of the bowl determine the heat dissipation capacity of the surface and the intensity of the effect of the cooling medium. The angle ei of the location of the slots to the axis of the bowl in the direction of rotation is determined by the intensity of the effect of the cooling medium.

The nozzle bowl works as follows.

A silicate melt is fed into the rotating hollow metal cylinder 2, which, under the action of centrifugal force, passes through the holes and turns into a fiber. In this case, the melt transfers heat to the metal cylinder, around which

flow and thus j. increase heat transfer from the metal cylinder to the environment.

When fi S0 and S, the aerodynamic drag increases, contributing to an increase in energy consumption,

The said device makes it possible to reduce the power consumption for rotating the bowl with a frequency of 1000 rpm by 2 times.

Claims (1)

Invention Formula A spinner bowl for the production of a silicate melt fiber according to the model, N, N, characterized in that, in order to decrease. 15077 476 : energy consumption due to an increase in deviation from the axis: —bre in the direction of turbulization of the gas flow with a decrease, opposite to the rotation of the bowl of the scientific research institute of the finned surface of the body, by an angle, where 1 is the length of the edge edge to length S - (1: 8- 1: 4) 1 edge between the slots.