CS262144B1 - Passage tray to ensure tempering and mixing of siliceous blades - Google Patents

Abstract

The solution concerns a through-flow container for ensuring tempering and mixing of silica fume, which is fixed to the supporting structure and in the upper part of which there is a hinge with a level indicator. The through-flow container has a thermal insulation insert. The essence of the solution lies in the fact that the through-flow container is inclined and has four heating blades inside, in which two electric heating elements are sealed, which are connected to a switch. The through-flow container is particularly suitable for the preparation of self-hardening and liquefied molding mixtures.

Description

The invention relates to the treatment of a container to ensure the tempering and mixing of the silica slag before the inlet of the mixer for the preparation of, in particular, a foundry self-setting molding composition.

The prior art siliceous magazines are thermally insulated. Before entering the siliceous slag tank, it is preheated by a gas burner or hot air in a separate device. In another case, a conventional steel container is terminated by a dosing space provided with a tempering jacket heated by hot water.

The disadvantages are that the devices are very large and cannot be adjusted quickly and flexibly as required by the technology.

These drawbacks are overcome by a silicate slag passage tank fixed to a support structure having a level indicator hinge at its top and having a thermal insulating insert according to the invention, having four heating knives inside which it is sealed two electric heaters connected to the switch.

The advantage of the container according to the invention lies in the fact that it is not necessary to provide an additional large device for heating the grinding material into the existing technological equipment. The arrangement according to the invention replaces another pre-mixing device. It works fully automatically. TO 'means that if the ambient temperature drops below the set technological temperature of the molding mixture, the grit is automatically heated. The shape of the heating knives prevents the formation of vault arches. The same process equipment can produce molds from self-setting mixtures, cores and molds from liquefied mixtures. By keeping the still desired temperature, the most advantageous disintegration after casting can be obtained. Without tempering and premixing it is not possible to produce in the cold and winter period by the modern technology described.

In the accompanying drawings, FIG. 1 is a partial cross-sectional view of the device according to the invention; and FIG. 2 is a cross-sectional view of the container with the heating knife arrangement.

The passage tank for the tempering and mixing of the silica slag consists of a supporting structure 1 which carries over the upper frame a tank 2 with a thermal insulation insert 3, on which four heating knives 4 are fixed, in which two electric heating elements 5 are secured. entering the screw mixer with a thermal switch 6 to prevent it from being heated to the set temperature. The hinge 7 of the heating blades 4 hangs the blades in the magazine 2 and at the same time serves as a level indicator 8.

Claims (1)

Subject Through-opening silo for tempering and mixing the silica slag fixed to a supporting structure, with a level indicator hinge at its top and having a thermal insulation insert, characterized in that it is bevelled and has four heating knives (4) inside which two electric heating elements (5) connected to the switch (6) are sealed.