| 摘要 |
The present invention aims for improving power load of a delivery pump and reducing absorbing resistance of a delivery pipe. When the delivery pump (3) of the fuel oil is used for delivering, a downflow pump (5) is kept to operate continuously, so that the high temperature oil form the downflow pump (5) is mixed and delivered to the fuel oil form a storage tank (1) and absorbed by the delivery pump (3) so that the viscosity of the fuel oil is reduced, and therefore the power load of the delivery pump (3) is improved, the delivery amount of the fuel oil form the storage tank (1) is reduced as much as the amount of the downflow oil, the delivery speed of the storage tank is reduced and the absorbing resistance is reduced. |
