Roller for recovering old asphalt mixture

Abstract

The invention provides a roller for recovering old asphalt mixture. The roller comprises a roller body, wherein six convex bars are axially arranged in the roller and are provided with a plurality offirst stirring rods, and a long-strip-shaped second stirring rod is arranged between two adjacent convex bars; each first stirring rod comprises a first rod, a second rod and a third rod which are respectively provided with a cylindrical structure; the first rod is vertical to the third rod, the second rod is obliquely connected with the first rod and the third rod, and the first rod is verticallyfixed on the convex bar; the cross section of the second stirring rod is of a L-shaped structure; and the bending direction of the first stirring rod is opposite to that of the second stirring rod, so that the heating effect is greatly improved.

Description

technical field [0001] The invention relates to a drum, in particular to a drum used for recycling old asphalt mixture. Background technique [0002] At present, the existing asphalt recovery devices all use rake teeth to sprinkle asphalt in the heating drum to form a material curtain, and inject high-temperature pressure air into one end of the drum to heat the asphalt mixture forming the material curtain. However, in the existing products, due to the unreasonable design of the rake teeth in the heating drum, the lifting of the material in the drum is very uneven. The asphalt on each rake tooth of the product is lifted at intervals, and the material lifting connection is not continuous, resulting in more holes in the material curtain on the rake teeth. Due to the negative pressure in the drum, hot air will pass through the drum in a short time. In addition, the large gap between the material curtains and the voids on the material curtains make it easier for hot air to flow...

AI Technical Summary

Problems solved by technology

However, in the existing products, due to the unreasonable design of the rake teeth in the heating drum, the lifting of the material in the drum is very uneven. The asphalt on each rake tooth of the product is lifted at intervals, and the material lifting connection is not continuous, resulting in more holes in the material curtain on the rake teeth. Due to the negative pressure in the drum, hot air will pass through the drum in a short time. In addition, the large gap between the material curtains and the voids on the material curtains make it easier for hot air to flow out of the drum, making the heat exchange time between the hot air and the material curtains shorter, resulting in a weaker heating effect of the asphalt mixture in the drum. Difference

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