CS239267B1 - Apparatus for releasing freezing masses from the wagon by radiant heating - Google Patents

Abstract

The invention relates to a device consisting of radiant troughs in which resistance, steam, hot water or gas heating elements are placed, the troughs being arranged along wagon edges, surfaces, above and below the wagons.

Description

(54) Devices for releasing antifreeze masses from a wagon by radiant heating

BACKGROUND OF THE INVENTION The invention relates to a device comprising radiant trays in which resistance, steam, hot water or gas heating elements are arranged, the trays being arranged along the wagon edges, surfaces, above the wagons 1 below the wagons.

The invention solves the acceleration of freezing masses from wagons. Double-sided freezing is maximally attacked by the material in the restricted space of the dumping edges and behind the lower part of the hopper flaps.

Layers of frozen material remain behind the dumping edges, preventing slipping by gravity of the released load. Furthermore, the crest of the saddle bottom of the self-discharge wagons, the bottom surface itself, on which the weight of the material is pressed by the sticky substances with the highest moisture content and the vertical wagon edges, are attacked by bilateral freezing, which makes the landslide difficult.

The same applies to wagons with a horizontal bottom. The heat transfer used by the pre-heated air flow in the tunnel to release the freezing masses is sufficient only to heat the vertical wagon walls to tear off the gravity and release the material.

However, it is insufficient to thaw the edges, the bottom and the entire layer of material thereon. The present invention, which overcomes these disadvantages, is based on the use of heating pipes, which may be resistance, steam or hot water, housed in troughs formed of reflective sheets and arranged continuously along the wagon assembly.

Thermal energy impinges directly on the material, waggons and surfaces immediately by direct radiation from the tubes. The inner surfaces of the wagon walls will soon become sliding. However, this does not thaw the charge of the material up to the furthest edge of the saddle bottom.

When the hopper flaps are opened, the non-thawed boulders of the charge defy and stop another landslide. If they pass, they must be smashed with hoes on the tray rack. Failure to do so requires manual or mechanical intervention in the wagon.

Since the heating of the side wagon walls is only allowed up to 100 ° C and the heating of the bottom with respect to air brakes and bearings only up to 60 ° C, efficient heating must be placed above the wagon and directed to the material above the top edge of the bottom.

Installation of heating elements with reflective troughs can be easily ensured by hanging on the ceiling structure along the axis of the wagon set. If they cannot be arranged along the wagon axis, due to the height of the existing tunnel or the intensity of the thermal radiation, they will be placed above the wagons on their sides, behind the clearance profile and directed to the material above. saddle ridge.

It is easy to install steam pipes with a surface temperature of 200 ° C. For smaller wagon sets, radiant heating can be used with hot water pipes with a flow heater or exchanger and a circulation pump.

In order to significantly reduce the dwell time of the wagon set in the tunnel, the radiant troughs above the wagons must be equipped with resistance tubes. For existing defrost tunnels tempered by preheated air, which heats the perimeter of the wagons, it is sufficient to accelerate thawing and unloading, combined with the addition of heating by heating pipes in reflective troughs arranged along the discharge edges and along the top edge of the saddle floor above the wagon.

Reflective heating by steam or hot water pipes directed to the top edge, can also be placed between the rails, under the passage profile. Preheated air defrosting, lasting for hours, can be shortened to minutes in places exposed to radiation.

If heat transfer by pre-heated air flow is not included, the reflective troughs with heating elements will be installed along the side walls of the wagons. Where there is insufficient steam source and the power supply is limited, combinations with gas burners in a ceramic jacket can be used to heat the charge material.

All reflective troughs are provided continuously, along the entire wagon set, thus along the gaps between the wagons. Thereby a radiant thermal impact is also achieved on the wagon fronts and the heating of the vertical wagon edges is ensured from two sides. Behind these vertical, double-sided freezing edges, the material binding is maximum.

Since radiant heating is characterized by high efficiency, the installation of the heating elements in the reflective walls can be carried out with greater spacing. An example of use is shown in the drawing, where the front view is a cross-section of a self-discharge wagon with side discharge flaps.

The heating pipes 7, 8, 8, housed in the radiant trays 2 mounted on the support structure 3, are arranged along the side walls 4, the leading edges 2 of the wagon and along the top edge of the saddle floor 6 above and below the wagon.

When combined with the use of preheated air, air is blown onto the discharge flaps and the side walls of the wagons by means of tubular nozzles from the side air channels 10.

Claims (3)

OBJECT OF THE INVENTION A device for releasing freezing masses from wagons, comprising radiant trays in which heating elements are arranged, characterized in that the radiant trays (2) with heating elements (1) are arranged continuously along the discharge edges (5), side walls (1). 4 / wagons, along the top edge of the saddle floor (6) above and below the wagons. Device according to Claim 1, characterized in that the radiant trough (2) is made of a reflective sheet and contains at least one heating element (1). Device according to claim 1, characterized in that a source of heating air (9) is arranged between the radiant troughs (2).