3GR85×4W21三螺杆泵/稀油站柴油输送泵
1.螺杆主杆与从杆.螺杆就相当于螺杆泵的心脏.其主要原理就是相互啮合的螺杆沿轴向输送介质（主要材质为40Cr, 38CrMoAl)
1 screw the main rod and screw rod. From the heart is e to the screw pump. Screwthe main principle is meshed with each other along the axial transport medium (the main material for the 40Cr, 38CrMoAl)
2.衬套螺杆泵的衬套及泵体的长度应至少能覆盖一个导程的螺杆副.（衬套主要材质为HT200//ZCuSn5Pb5Zn5/ZL109外壳为HT200/）
Bush and a pump body 2 Bush screw pump length of the screw pair can at least cover a lead.(Bush the main material for the HT200//ZCuSn5Pb5Zn5/ZL109 shell is HT200/)
3.泵体螺杆泵的衬套及泵体的长度应至少能覆盖一个导程的螺杆副.（材质为HT200/）
Bush and the pump body and pump body pump 3 screw length of screw pair can at leastcover a lead (material HT200/).
4.机封座铸件直接加工（材质为HT200/）
4 mechanical seal seat casting process directly (material HT200/)
5.密封压盖密封压盖一般为车床加工产品.是连接密封件的重要部件.其精度要求非常高。
5 sealing gland gland for the general lathe machining products. Is an important component inthe connection seal. The very high accuracy requirements.
6.前端盖铸件直接加工（材质为HT200/）
Direct casting 6 front cover (material HT200/)
7.后端盖铸件直接加工（材质为HT200/）
Direct casting 7 rear cover (material HT200/)
8.安全阀安全阀是起到保护泵及电机不被损坏的一套装置.由于泵出厂前就设定了使用的压力.故在超过此压力时.就会自动开启泄压.起到了一定保护的作用。
8 safety valve safety valve is a device to protect the pump and motor are not damaged.Because the pump factory set using pressure. So in excess of this pressure. Pressure reliefwill automatically open. Played a certain role in the protection of the.
9.易损件为机械密封.轴承螺杆泵密封分为.机械密封（适用于介质润滑性好温度小于80°)填料密封(适用于润滑介质较差粘度大温度小于150°）和波纹管密封（适用于介质粘度大温度在250°）
9 wearing parts for mechanical seal. Divided