| 摘要 |
A foam spraying rig having an engine, a compressor and a hydraulic system positioned within a compartment. The foam spraying rig has a heat exchanger positioned within the compartment, and a fluid line connected to the engine, compressor and hydraulic system passes through the heat exchanger. A first storage tank containing a first material and a second storage tank containing a second material is positioned within the compartment. The first and second materials are conveyed through the heat exchanger through fluid lines which connect to a proportioner which meters the first and second material at specified proportions. The proportioner is fluidly connected to a dispenser which mixes the first and second material before it is dispensed. This arrangement of components within the compartment and the use of the heat exchanger warms the first and second materials to an operative temperature in a quick, inexpensive, low maintenance and durable manner.
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