Determination and Calculation of Rotation Center Position of Mix flow Pump

Determination and Calculation of Rotation Center Position of Mixing Pump
The position of the valve shaft is determined by the rotation center of the mixed pump plate, which has a great influence on the performance and quality of the mixed flow pump. The better position of the mixed-flow pump shaft usually means that the following conditions should be met in addition to the correct action of the mixed-flow pump:
① mixed flow pump opening and closing with the mixed pump friction torque is small.
② mixed flow pump closed or even closed, the metal seal elastic deformation and wear more uniform, to ensure the service life of mixed flow pump.
③ When the mixed flow pump is closed, the metal seal shall have a large elastic deformation in the critical part of its seal (as in point B in Fig. 1) to improve the reliability of the seal. Figure 1 three-dimensional coordinate system in the mixed-flow pump position 2 mixed flow pump shaft to determine the best position of the principle and calculation method 2  1 mixed flow pump shaft position analysis shown in Figure 1, in the coordinate system, SR ball in the O1 point, mixed Pump diameter ΦAB, and SR cross Z  X section of the A and B points, and perpendicular to the X axis. Mixing pump diameter ΦAB = 2a, the foot of the foot for the C point. Let CO1 = H, vertex at O ​​point, and with SR cut ΦAB cone, the cone angle is 2θ. In the Z-X section t1 and t'1 are SR tangent at the A and B points, then the coordinates of A and B are A (a2H, ∞, a) and B (a2H, ∞, -a) respectively. If E0 (x1, ∞, Z1) is the rotation center of the mixed-flow pump diameter ΦAB, the direction of movement of A and B can only be tα and tβ direction when the mixed flow pump is clockwise and counterclockwise.