The principle diagram of the single screw pump, graphic interpretation

2019 - 10 - 12

a, single screw water pump is introduced

single screw pump belongs to the rotor type positive displacement pump, it is depend on the screw meshing with liner on the discharge and suction cavity to conveying liquid volume change. It is a kind of method of pressurized screw pump, a main working parts by bushing has a double helix cavity ( The stator) And in the stator cavity and its meshing single-head screw screw ( Rotor) Composition. When the input shaft through the universal joint drive rotor, stator center as a planet revolving around the stator - Rotor vice continuous mesh form a sealed cavity, the seal chamber volume invariably uniform axial movement, the medium from the suction end by the stator - Vice to pressure the rotor side, the medium into cavity through the stator without stirring and destruction. Single screw pump classification: overall stainless steel single screw pump, stainless steel shaft single screw pump.

second, the working principle of the

screw with a single thread, the arbitrary cross section of radius R of the circle, the center of the cross section is located in a spiral line and screw axis deviation from an eccentricity e, pivoting and move along the axial and form Numbers than Lobes: screw the stator Numbers T1 one more than the rotor quotas T2 and T1 = T2 + 1. The ratio of their specific lobe. Screw pump can be divided into single head ( 1:2) And long ( 2:3, 3:4) And so on. The more specific lobe, the greater the output torque of screw pump, the lower the speed. On the other hand, the output torque is smaller, the higher the speed. Surface with double threads in the bushing, the arbitrary cross section for a long, both ends is radius R ( Is equal to the screw section radius) The semicircle, the middle one is long is a 4 e of straight line segments. Bushing of arbitrary cross section are the same long, just each other stagger an Angle. After the screw into the bushing, the surface of the single screw pump and bushing internal thread surface to form a closed chamber, between arbitrary cross section at the same time also is divided into two crescent-shaped studio. When the screw rotates, the first studio near the suction chamber volume increases gradually, form the negative pressure, under the action of pressure difference, liquid drawn into the studio. As a continuation of the screw rotation, continuous working volume to maximum, the studio closed, pushed along the axial liquid and the pressure out of the room. At the same time two studio cycle of suction and discharge liquid, so the liquid is continuously from the suction chamber along the axial direction to the pressure chamber.

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