| 摘要 |
<p>A burner arrangement for use with a dryer (5 Fig 2A) for drying aggregates has means to provide an airflow, a burner chamber (3 Fig 2A), a combustion chamber (4 Fig 2A) and means to supply fuel to at least one fuel-atomising nozzle 3.16, 3.32. The combustion chamber has an opening at an upstream end communicating with the burner chamber, and an opening at a downstream end for passing combustion gases and heated air into a drying chamber of the dryer. In use, the at least one burner nozzle is arranged to direct a flow of atomised fuel into the combustion chamber for combustion. The means of providing the airflow can be a blower module (2 Fig 2A) movably mounted on a support structure (1 Fig 2A) for access to the interior of the burner chamber. A fuel valve (3.2 Fig 15) for use with the burner can also be included, allowing burner connection to two separate fuel supplies (3.27A & 3.27B, Fig 16), and which includes rotatable valve members (3.23 Fig 15). The burner arrangement can also include at least one airflow modifier device 3.11, such as a swirl plate, mounted in or across the opening at the upstream end of the combustion chamber, and which provides a gap 3.13 for airflow, which may be adjusted by pneumatic rams 3.1.</p> |
