SU1395501A1 - Line for making rigid mineral-wool boards - Google Patents

Abstract

The invention relates to the construction materials industry. The purpose of the invention is to increase the strength of slabs with expanded clay aggregate. The line contains a mixer 2, a hydromass stacker 3, a molding conveyor 4, under the working branch of which a dewatering unit 5 is located. A distributor with an actuator 8 is installed above the dehydration unit, made in the form of a shaft with alternating sections of different diameters, provided with longitudinal ribs. The distributor is in contact with the spring-loaded cleaning device 12. The shaft is installed in the support with eccentricity. The cleaning device 12 has a shape that copies the outer contours of the shaft surface. The filler dispensed by the feeder 7 from the hopper 6 onto the hydromass carpet, located on the forming conveyor 4, is gripped by the fins and is regularly distributed in the volume of the carpet. Due to the difference in the diameters of the shaft and the eccentricity during the rotation, the shaft sections press the claydite over the entire volume of the carpet. In this case, the ribs impart an additional bending to the mineral wool fibers and inject hydromass under the sub-press 15. The carpet, dried in the heat treatment chamber 16, is cut into plates with knives 17. 2 Cp. f-ly, 3 ill. i (L OO g SP JV J6 17

Description

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The invention can be used in the industrial construction materials for the manufacture of rigid thermal insulation boards based on mineral wool, synthetic binder and expanded clay aggregate.

The purpose of the invention is to increase the strength of slabs with expanded clay aggregate.

Figure 1 schematically shows the line, a general view; FIG. 2 is a top view of the dispenser with a cleaning device; FIG. on fig.Z - section aa in figure 2.

The production line contains a conveyor 1 for supplying mineral wool, a mixer 2, a hydromass piler 3 with a feeder, a forming mesh conveyor 4, under the working branch of which there is a suction chamber 5 installed above the coveyor hopper 6 with a feeder 7 aggregate, a distributor with a drive 8 made in the form of a shaft 9 with alternating sections 10 of different diameters, provided with longitudinal ribs 11, a cleaning device with a scraper 12 having a shape that copies the outer contours of the surface of the shaft 9, and a pressing element in the form of a spring 13, one end of which is attached to the scraper 12, and the other fixedly mounted in the support, a flexible element made of, for example, rubber tape 14 fixed with bolts and a clamping bar (not shown) with one end to the bottom of the scraper 12, and the other to the sub-press 15 ,, made of metal sheet 4-6 mm thick, having a width equal to the width of the carpet, and fixedly attached to the sides of the forming conveyor 4, heat treatment chamber 16 and knives 17 for cutting the carpet.

Shaft 9 is mounted on supports with eccentricity e.

Mineral wool conveyor 1 is fed to a continuously operating mix.

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Silent 2, where a hydromass is prepared (a mixture of fiber and an aqueous solution of a binder, for example, phenol-formaldehyde resin)

The hydromass formed by the stacker 3 with the feeder is evenly distributed as a carpet on the forming mesh conveyor D. At the beginning of the suction chamber 5, the excess part of the aqueous binder solution is removed.

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Upon reaching the liquid phase, in the carpet of hydromass 33-50% on its surface from the hopper 6, a light aggregate, for example, expanded clay, is dosed by the feeder 7. The shaft 9, the direction of rotation of which from the actuator 8 coincides with the direction of rotation of the carpet, the ribs 11 captures the expanded clay granules and regularly distributes them in the volume of the carpet. Due to the difference in diameters and eccentricity during the rotation, the sections 10 of the shaft 9 press the expanded clay across the entire volume of the carpet. In this case, the fins 11 impart additional bending to the fibers of the mineral wool and inject hydromass under the sub-press 15, which helps remove the aqueous solution of the binder and increases the density of the carpet. When winding mineral vatG fibers on the ribs 11 scraper

12 cleans them from fibers. Spring

13 and the flexible element 14 provide the clamping of the scraper 12 to the shaft 9 with the ribs 11 and the possibility of its movement.

The mineral wool, dried in the heat treatment chamber 16, is cut by the knives 17 into plates of predetermined sizes.

The use of the proposed line as compared to the known one allows to increase the strength of the plates by 10-15%, to increase the productivity of the line due to the possibility of increasing the speed of the forming conveyor with a constant flow of hydromass, and also to reduce the binder consumption by 5-7%. ,

Claims (3)

1. Lines for the manufacture of hard mineral wool boards, comprising a mixer, a hydromass piler, a molding conveyor with a suction chamber placed under its working branch, a sub-pressrower, a heat treatment chamber, and carpet cutting knives, in order to increase the strength of ceramsite aggregate plates , it is equipped with a feeder and a filler distributor placed above the suction chamber, the last of which is designed as an eccentrically mounted in supports perpendicular to the longitudinal axis of the shape ovochnogo conveyor drive shaft with alternating sections of different diameters, provided with circumferentially longitudinal ribs. 2. Line POP.1, characterized in that it is provided with a cleaning device of a distributor in the form of a spring-loaded scraper in contact with the drive shaft along the length of its sections with an elastic coating of the working surface, 3. The line according to claims 1 and 2, which differs from the fact that the sub-press is connected to the base of the scraper of the cleaning device by a flexible element. 13 0USi.3