SU1546443A1 - Centrifuge for making mineral fibre - Google Patents

Abstract

The invention relates to fiber production devices and can be used in the industry of thermal insulating building materials. The aim of the invention is to increase the productivity and quality of the fiber. It contains a hollow cooled bowl 1 mounted on a drive shaft 2 with channels 3 for supplying coolant. The inner working surface of the bowl 1 contains a receiving cone 4 and several steps formed by the side surfaces of the truncated cones 5, 6, 7 with transitional ledges 8 and 9 at the base of the cones. It also contains a blow head. When the melt moves under the action of centrifugal forces, the melt particles are additionally broken up, falling through the ledges onto the next cone, as a result, the melt waste is significantly reduced. 1 il.

Description

(21) 129 / 23-33

(22) 18.0.88

() 02.28.90. Bul P 8

(71) Chisinau combine of building materials

(72) N.D.Gogush

(53) 666.198 (088.8)

(56) US Patent K ° 4111673,

cl. 65-6, 1978.

USSR author's certificate №, cl. From 03 to 37/04, 1986.

(CENTERIFUGA FOR PREPARING MINERAL FIBER

(57) The invention relates to devices for producing fiber and can be used in the industry of thermal insulating building materials. The aim of the invention is to increase the productivity and quality of the fiber. The centrifuge contains a hollow cooled bowl 1 mounted on a drive shaft 2 with channels 3

(I

ate

J

About 4 4b

WITH

for coolant supply. The inner working surface of the bowl 1 contains a receiving cone i and several steps formed by the side surfaces of the truncated cones 5,6,7 with transitional ledges 8 and 9 at the base of the cones. It contains

The invention can be used in the industry of heat insulating materials to obtain mineral fiber from a melt.

The purpose of the invention is to improve the performance and quality of the fiber.

In the drawing a centrifuge is shown schematically, a slit.

The centrifuge contains a hollow cooled bowl 1 mounted on a drive shaft 2 with channels 3 for supplying coolant in fluid communication with the cavity of bowl 1. The inner working surface of bowl 1 contains a receiving cone k and several steps formed by the side surfaces of truncated cones 5, b, 7 with transitional ledges 8 and 9 at the base of the cones, the centrifuge also contains a blow head (not shown).

The centrifuge works as follows.

When the bowl 1 rotates, the melt moves from the tap hole to the receiving part of the melt processing - cone C. Under the action of centrifugal forces, the melt particles move to the edge of the cone 5 and collapse through ledge 8, fall onto the cone 6, and then through the ledge 9 to the last cone 75 where blown head blown away. Because to the edge

also blow head. When the melt moves under the action of centrifugal forces, the melt particles are additionally broken up, falling through the ledges onto the next cone, as a result, the melt waste is significantly reduced. 1 il.

The bowl circumferential particle velocity increases and, moreover, the melt is broken, falling through the ledges onto the next cone, the melt waste in the form of undivided particles of the bead decreases significantly, which ultimately improves the productivity and quality of the fiber.

The test results of two-stage and three-stage centrifuges showed that the reduction of the unprocessed melt is about 15%, i.e. 20% less than in a single-stage centrifuge.

25

Claims (1)

30 claims A centrifuge for mineral fiber containing a hollow cooled bowl mounted on the drive shaft with an inner conical working surface and a blow head, characterized in that, in order to improve the performance and quality of the fiber, the working surface of the bowl is made of several stages side surfaces of truncated cones with a transitional step at the base of the cones.