Mobile asphalt plant

a technology of mobile asphalt plant and drum, which is applied in the direction of roads, roads, construction, etc., can solve the problems of large amount of heat required, large heat loss, and impeded drum movemen

Pending Publication Date: 2022-06-23
MUNICIPAL ASPHALT PLANTS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0014]In still another embodiment, each of the plurality of augers comprises a rotating shaft, one or more flights attached to the shaft, and a

Problems solved by technology

An immense amount of heat is required to heat the gravel from ambient temperature to the required mix temperature.
Although this may be effective in heating the gravel, the flue gases are able to leave the drum unimpeded, with most of the heat being lost.
The escaping flue gases leave as wasted he

Method used

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Examples

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Embodiment Construction

[0053]Referring to FIGS. 1 to 3, a mobile asphalt plant 10 in accordance with the invention may take the form of a trailer, comprising a bed 11 supported by a plurality of wheels 13. The mobile asphalt plant 10 further comprises a container unit 12 configured to receive aggregate material 2 (for example, crushed gravel or other suitable material) to be used in producing asphalt. The mobile asphalt plant 10 also comprises a heating unit 14 for providing heat for the mobile asphalt plant 10. The container unit 12 and the heating unit 14 are preferably supported on the bed 11.

[0054]Referring to FIGS. 4 to 6, in one embodiment, the heating unit 14 comprises a tank 16 and one or more first plenum tubes 18. The tank 16 is configured to hold heat transfer oil 4. The one or more first plenum tubes 18 extend into and within the tank 16. The heating unit 14 further comprises one or more heaters 20 that are connected to the first plenum tubes 18. The heaters 20 are configured to provide heated...

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Abstract

A mobile asphalt plant for producing asphalt includes a heating unit, a container unit, a plurality of augers, and an injector. The heating unit includes one or more heaters to generate heated gas, a tank to hold heat transfer oil, and one or more first plenum tubes extending from the heaters to within the tank. The first plenum tubes transport the heated gas to the tank to heat the heat transfer oil. The container unit includes a hopper to receive the aggregate material and one or more second plenum tubes extending from the one or more first plenum tubes and extending within the hopper. The second plenum tubes transport the heated gas from the first plenum tubes to heat the aggregate material. The augers are arranged as a series of augers, with a first one of the augers receiving the aggregate material from the hopper. Each of the augers conveys the aggregate material to a next one of the augers. Each of the augers heats the aggregate material using the heat transfer oil from the tank. The injector is connected to one of the augers and injects asphalt oil into the aggregate material to produce asphalt.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Patent Application No. 63 / 129,201 filed Dec. 22, 2020, the contents of which are incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The invention relates to an apparatus used to produce asphalt, and in particular, to a mobile asphalt plant.BACKGROUND OF THE INVENTION[0003]Asphalt is a viscous or semi-solid substance that is commonly used in road construction. The main ingredients for producing asphalt are aggregate material (such as gravel) and asphalt oil. Typically, the production process requires that the gravel and asphalt oil must first be heated to a temperature of greater than 300° F. before being mixed together. An immense amount of heat is required to heat the gravel from ambient temperature to the required mix temperature. The specific heat for basalt rock (one of components of gravel) is 0.2 BTU / lb ° F. For example, at 100% efficiency, it would ta...

Claims

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Application Information

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IPC IPC(8): E01C19/08E01C19/10
CPCE01C19/08E01C2019/1081E01C19/1013E01C19/10E01C19/1031
Inventor WIEBE, ROBSEKYER, DANNY
Owner MUNICIPAL ASPHALT PLANTS INC
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