LCB series heat jacket gear pump is designed to transport non-corrosive, non-solid particles, and solidified medium at room temperature, such as lubricating oil, fuel oil, asphalt, resin, rubber and so on. The inlet and outlet of the equipment are equipped with hollow jackets and flanges, which can heat and cool the conveyed liquid and pump by means of thermal oil, steam and hot water. It is especially suitable for outdoor installation in alpine areas and occasions where the process medium requires heat preservation. The machine can also be used for heavy oil conveying pipelines in refineries, linoleum factories, asphalt plants, unloading stations and other enterprises, as well as for asphalt spraying operations in construction projects such as roads and squares.