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泵阀资料

双螺杆泵的结构特点

　　双螺杆泵的结构特点
　　The structural characteristics of twin-screw pump

　　双螺杆泵是外啮合的螺杆泵，它利用相互啮合，互不接触的两根螺杆来抽送液体。
　　Twin-screw pump is outside the mesh of the screw pump, which uses mutual engagement, and do not touch the two screws for pumping liquids.

　　双螺杆泵作为一种容积式泵，泵内吸入室应与排出室严密地隔开。因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。同时螺杆与泵体、螺杆与螺杆间又相互形成密封腔，保证密闭，否则就可能有液体从间隙中倒流回去。
　　Twin-screw pump as a positive displacement pump, pump room exhaust inhalation chamber should be strictly separated. Therefore, the pump with the screw and screw and screw cylindrical surface gap should be as small as possible more. At the same time with the screw pump, screw and screw with each other form a sealed cavity between one another to ensure airtight, otherwise there may be liquid from the gap in the back to go back.

　　双螺杆泵可分为内置轴承和外置轴承两种形式。在内置轴承的结构型式中轴承由输送物进行润滑。外置轴承结构的双螺杆泵工作腔同轴承是分开的。由于这种泵的结构和螺杆间存在的侧间隙，它可以输送非润滑性介质。此外，调整同步齿轮使得螺杆不接触，同时将输出扭矩的一半传给从动螺杆。正如所有螺杆泵一样，外置轴承式双螺杆泵也有自吸能力，而且多数泵输送元件本身都是双吸对称布置，可消除轴向力，也有很大的吸高。Twin-screw 　　pump can be divided into internal and external bearing bearing two forms. In the built-bearing structure type of bearing material from the conveyor lubrication. External bearing structure, twin-screw pump working chamber with the bearings are separated. Because of this structure and the screw pump exist between the side gap, which can transport non-lubricating medium. In addition, the adjustment screw is not synchronized gear makes contact, at the same time pass on half of the output torque driven screw. As with all the same screw pump, external bearing type twin-screw pump is also self-priming capability, but the majority of pump delivery components are themselves double-suction symmetrical layout to eliminate the axial force, but also a great high suction.

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