SU1380960A2 - Apparatus for making rigid mineral-wool board - Google Patents

Abstract

The invention relates to the building materials industry, in particular, to devices for the manufacture of hard mineral wool. The goal is to reduce binder losses and increase device reliability. The natural dewatering system 5 and the cold-vacuum table 6 are connected by ducts 12 and 13 to the pipes 14 and 15 of the recirculation pool 8. The hot-vacuum table 7 is connected to the inlet pipe 17 of the fan 10 directly by means of the exhaust duct 16 vacuum suction. The outlet 18 of the recirculation basin 8 is connected to the flue 16. The discharge port 19 of the suction fan 10 is connected via a flue 20 and a distribution manifold 21, located in the heat treatment chamber 11, to the discharge zone of this chamber. In the exhaust gas duct 16, an irrigation nozzle 22 is installed for spraying a stabilizing liquid. The vacuum cavity of the fan 10 is connected by a drainage pipe 23 to a recirculation basin 8. 1 sludge. From € cl

Description

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The invention can be used with 11/11 Hzl 111 (:: a heat-sounding diole cTpoHTO-jiijHbix material for the preparation of hard mineral and x slabs.

The purpose of the invention is to avoid the loss of binding and increase the reliability of the device.

The drawing shows a schematic diagram of a device for the manufacture of mineral wool pieces.

The device for the manufacture of mineral wool plates contains a feeder 1 of hydromass, a molding conveyor 2 with a profiling 3 and an underpressing 4 drums, a slotted system with an adjustable gap, a system of 5 natural dehydration of hydromass, a vacuum dewatering system with vacuum tables 6 and 7 of cold and hot vacuuming, respectively a recirculation basin 8 for collecting and returning the binder, a hot vacuum chamber 9 located above the vacuum tables 7, and a vacuum suction fan 10, as well as a chamber 11, heat The natural dehydration system 5 and the cold table 6 of the cold Mirovapi vacuum are combined with the boxes 12 and 13 with the inlets 14 and 15 of the recirculation basin 8, the vacuum table 7 of the hot evacuation using the exhaust duct 16 directly with The outlet pipe 17 of the fan 10 of the vacuum suction and the outlet pipe 18 of the recirculation basin 8 are connected to the flue 16. The discharge pipe 19 of the suction valve 10 is connected by means of the flue 20 and the distribution manifold 21 located above the chamber 11 heat treatment otki, with the discharge zone of this chamber. In the exhaust gas duct 16, a sprinkler} 1a is installed; a nozzle 22 for spraying a stabilizing liquid. The vacuum cavity of the fan casing 10 is connected via a drainage pipe 23 to a recirculation basin 8. At the same time, the outlet section of the pipe 23 is located below the level of the binder solution, thereby forming together with im water seal. The chamber 9 of the hot evacuation is made, for example, of two zones, which are separated from each other by means of an L-shaped gate 24 and connected by means of gas ducts 25 and 26 with regulating

gates with channels 27 and 28, respectively, for fresh supply and withdrawal of recirculation coolant. The area of the vacuum chamber 9 is about 0.3-0.7 square of the vacuum table.

The device works as follows.

The hydromass produced in the mixer (not shown) using the feeder 1 is evenly distributed on the molding conveyor 2. 15 The passage over the natural dewatering system 5, the hydromass is partially dehydrated due to the hydrostatic pressure of the liquid column, after which it is profiled by the drum 3 20 and enters the system forced vacuum dewatering, where it is further dehydrated, at first, due to pumping through the carpet using a vacuum table 6 cold

.25 air (from the workshop) up to 60–40%, and then, due to the suction through the carpet with the help of a vacuum table, 7 hot gases fed to the chamber 9 from the channel 27 of the fresh heat carrier of the chamber 11 are heat treated. The vapor-gas mixture containing particles of a dropping entrainment binder, which forms as a result of a pumping through the hot gases carpet, is directed to the exhaust gas duct 16, where it is treated with a solution of a stabilizing liquid using an irrigation nozzle 22. The cold air that is sucked through the carpet along with the binder solution enters from the vacuum table 6 of cold evacuation through the duct 13 and the nozzle 15 into the recirculation basin 8, where it is separated from the binder solution and through the outlet 18 enters the duct 16. Obtained in the duct 16 a vapor-air-gas mixture is supplied to the inlet 17 of the fan 10 of the vacuum suction, from where through the discharge pipe 19, the flue 20 and the distribution manifold 21

O is discharged into the discharge zone of the heat treatment chamber 11 and, together with the fresh coolant, is blown through the carpet, thereby filtering the binder droplets ejected from the vacuum dewatering system. In this case, the binder settles mainly on the surface layer of the carpet and strengthens it.

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The binder solution, condensed in the fan casing 10, flows through the drainage pipe 23 into the collection pool 8 and the binder is returned. Iodine through the nozzle 22 into the duct 16 stabilizing fluid, such as ammonia solution, prevents the binder on the walls of the duct 16 from coagulating in the cochlea of the fan and the exhaust duct 20.

The use of the invention makes it possible to minimize losses of the binder with drip entrainment and irreversible curing and reduce environmental pollution by harmful emissions. At the same time, the strengthening of the surface layer of the carpet is achieved, and POVE-L reliability of the operation of the line is achieved by reducing forced stops for preventive cleaning of the equipment.

Claims (1)

Invention Formula A device for making hard mineral wool plates according to ed. St. No. 1178626, characterized in that, in order to reduce binder losses and increase reliability, the recirculation basin of the dewatering system and binder return is made with nozzles, the output of which is connected to a vacuum table exhaust duct connected through a fan and distribution manifold to heat treatment chamber; In the exhaust gas duct, a nozzle for spraying a stabilizing fluid is mounted, and the vacuum cavity of the fan is connected through a hydraulic lock to a recirculation basin.