EP3088333B1 - Heatable asphalt container - Google Patents

Description

The invention relates to a heatable asphalt container, wherein the asphalt container has electrical heating elements. Asphalt containers are known in various embodiments. Known in this context, in particular so-called thermal asphalt containers, which are characterized in that such thermal asphalt containers, as the word "Thermo" already gives, are thermally insulated on its periphery. This ensures that the asphalt, which has been hotly introduced into the thermal asphalt container, retains a temperature over a certain period of time, depending on the outside temperature, which makes it possible to process it.

In addition, from the DE 44 01 501 C1 and the DE 36 11 664 A1 heated asphalt tanks or asphalt containers known. Gas-heated containers are also known, one or more gas lances being provided for heating the asphalt in the container. By means of the gas lances, the asphalt in the container is heated substantially at certain points. The disadvantage of this is that the asphalt often burns in the container in the region of the gas lance and the relatively high temperatures prevailing there. This means that a regulation must be provided which prevents the asphalt from being overheated at certain points. This is relatively expensive and does not always lead to success, since in particular at relatively low outside temperatures, a high heat input is required to keep the asphalt at a temperature that allows processing. However, this can have the consequence that, as already stated, the asphalt in the container is heated unevenly, with the risk of burning the asphalt. In addition, it is disadvantageous that thermal insulation of the container is not possible in the area of the gas lance or the gas lances, since there is a risk that the insulation burns.

From the JP 2006-051887 A In this context, a vehicle with a container is known in which the load in the container can be kept warm by electrical heating.

In this respect, already electrically heated asphalt containers are known.

This ensures that the asphalt undergoes uniform heating, which prevents the asphalt burns due to excessive heat.

The asphalt container according to the invention has a particularly vertically displaceable outlet slide for the exit of the viscous asphalt, wherein the outlet valve also has at least one electrical heating element, which may also be arranged in a corresponding heating chamber. This ensures that the paving asphalt at the outlet slide always has a viscosity that allows immediate processing. Without heating the exhaust valve this would form a cold bridge. The paving asphalt at the outlet gate would harden and would have to be disposed of before the asphalting process.

As heating elements come in particular electrical heating plates, electric heating elements or electric heating coils according to a particular feature of the invention in question. For arranging these electrical heating elements in the container is provided according to a further particularly advantageous feature that the asphalt container is at least in the region of the bottom to form at least one heating chamber double-walled, wherein the heating elements are arranged in the at least one heating chamber. Advantageously, however, not only in the region of the bottom is such a heating chamber, but rather such heating chambers can also be provided in the region of the side walls and the rear wall.

To optimize the heat transfer, the heating elements are according to a further advantageous feature of the inner wall of the respective heating chamber, that is, that the heating elements abut against the wall of the heating chamber, which is in communication with the asphalt. This results in optimum heat transfer, as there is no air cushion.

The previously mentioned outlet valve is located at the rear end of the Auslaßwandung the asphalt container; it is arranged parallel to the outlet wall of the asphalt container slidably on the container. In order to ensure that the asphalt container can be completely emptied, it is provided that the asphalt container inside has on the outlet opening with the outlet slide tapered baffles. The baffles arranged on both sides of the outlet opening inside the container ensure that there are no dead spaces at which the asphalt accumulates. Because there is a risk that the asphalt hardens, and so easily the asphalt at these points can not be removed from the container.

According to a further advantageous feature of the asphalt container is thermally insulated. This ensures that the container keeps the heat after heating the liquid asphalt longer, or that a lower power supply to maintain the processing temperature of the asphalt is required.

To power a generator on the truck, which receives the thermal asphalt tank, be provided, which also has the possibility to arrange the generator on the container. It is also conceivable, however, and depending on the processing speed of the asphalt in the container to get along completely without a generator, namely, when the charging process of the asphalt, the heating elements of the container are charged so that not only the heating elements are heated, but also the wall of the container. Both, so both the heating elements and the wall of the container after heating have a certain heat capacity, which ensures that the asphalt over a longer period has a workable consistency.

Fig. 1

zeigt schematisch einen Container in einer dreidimensionalen Darstellung, wobei der Deckel des Containers im abgenommenen Zustand dargestellt ist;

Fig. 2

zeigt eine Ansicht auf die Auslasswandung des Containers, an der der Auslassschieber angeordnet ist;

Fig. 2a

zeigt einen Schnitt gemäß der Linie Ila-Ila aus Fig. 2;

Fig. 3

zeigt einen Schnitt gemäß der Linie III-III aus Fig. 1, wobei der Deckel weggelassen ist.

Reference to the drawings, the invention is explained in more detail below by way of example;

Fig. 1

shows schematically a container in a three-dimensional representation, wherein the lid of the container is shown in the detached state;

Fig. 2

shows a view of the outlet wall of the container, on which the Auslassschieber is arranged;

Fig. 2a

shows a section along the line Ila-Ila Fig. 2 ;

Fig. 3

shows a section along the line III-III Fig. 1 with the lid omitted.

The container 1 shown in the figures has the lid 3, which is shown in the manner of an exploded view in the removed state. The container 1 itself has a container bottom 5, two side walls 7, a rear wall 9, and the outlet wall 11 for receiving the designated pivotable outlet slide 13. The outlet slide is held vertically displaceably guided by the guide rails 14. The guide rails 14 are designed in cross-section L-shaped, as is apparent from Fig. 2 results. The conically tapered on the outlet slide 13 inside the container baffles are designated 20. The bottom 5, with the laterally beveled extending bottom elements 5a is also double-shelled or double-walled to form heating chambers, such as the side wall 7 and the rear wall 9, as can be seen in the view of Fig. 2 but also from Fig. 3 results. The heating chambers themselves in the region of the bottom 5 and the lateral bottom elements 5a are 15, 15a referred to, the chambers in the region of the side walls 7 and the rear wall 9 are designated 7a and 9a. The outlet spool 13 is also double-walled to form the chamber 13a. In the chambers 7a, 9a, 13a, 15, 15a, the electrically operated heating elements in the form of heating plates 19 are arranged in different sizes. The plate-shaped heating elements 19 (here Fig. 2 . Fig. 3 ) are applied to the inner wall of the individual heating chambers 5a, 7a, 9a, 13a, 15, 15a, which allows optimum heat transfer from the individual electrically operated heating elements into the interior of the container.

LIST OF REFERENCE NUMBERS

1

Container

3

cover

5

container floor

5a

lateral floor element

7

Side wall

7a

heating chamber

9

rear wall

9a

heating chamber

11

outlet wall

13

Exhaust valve

13a

heating chamber

14

guide rail

15

heating chamber

15a

heating chamber

19

heating plate

20

baffle

Claims (6)

1. A heatable asphalt container (1) with the asphalt container (1) comprising electric heating elements,
   characterized in
   that the asphalt container (1) comprises an outlet slider (13), which exhibits at least one electric heating element,
   with the outlet slider (13) comprising at least one heating chamber (13a) for receiving the at least one electric heating element.
2. The heatable asphalt container (1) according to claim 1,
   characterized in
   that the electric heating elements are heating plates, heating rods or heating coils.
3. The heatable asphalt container (1) according to any one of the preceding claims,
   characterized in
   that the asphalt container (1) at least in the area of the bottom (5, 5a) is configured in a double-walled manner for the formation of heating chambers (15, 15a), with the heating elements being disposed in the heating chamber (15, 15a).
4. The heatable asphalt container (1) according to any one of the preceding claims,
   characterized in
   that the side walls (7) and/or the rear wall (9) are configured in a double-walled manner for the formation of heating chambers (7a, 9a), with the heating elements being disposed in the heating chambers (7a, 9a).
5. The heatable asphalt container (1) according to any one of the preceding claims,
   characterized in
   that the heating elements are disposed abutting the inner wall of the heating chambers (7a, 9a, 13a, 15, 15a).
6. The heatable asphalt container (1) according to any one of the preceding claims,
   characterized in
   that the asphalt container (1) is thermally insulated.

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