High-precision blade complete adjusting device of small and medium size water pumps and design method thereof

Abstract

The invention relates to a high-precision blade complete adjusting device of small and medium size water pumps and belongs to the technical field of energy power. The high-precision blade complete adjusting device primarily comprises a blade rotating mechanism, an operating mechanism and a display mechanism. The blade rotating mechanism is composed of a blade, a rotary arm, a lug handle and an operating rack; the operating mechanism is composed of an upper operating rod, a wheel hub bottom cover, a sealing device, a separating bearing, a lower operating rod, a hinge A, a slide block A, a lever, a hinge B, a slide block C, a hinge C, an outer operating rod, an outer operating rod limiting and guiding device, a worm and gear mechanism and a handwheel; the display mechanism is composed of anangle pointer and a dial; the angle value of the blade indicated by the display mechanism is observed, the hand wheel is rotated clockwise, and the blade is adjusted toward a large angle direction bymeans of transmission of the operating mechanism and the blade rotating mechanism; on the contrary, the hand wheel is rotated anticlockwise, so that the blade is adjusted toward a small angle direction; the device is novel in structure, easy to operate and little in added cost, and the blade angle can be adjusted in halt and operation processes at any time, so that the demand on angle-changing economic operation and flow adjustment of a pump station is met.

Description

technical field [0001] The invention relates to a water pump blade adjustment device, in particular to a small and medium-sized water pump high-precision mechanical blade full adjustment device and a design method thereof, which are suitable for small and medium-sized vertical axial flow pumps and guide vane mixed flow pumps. Background technique [0002] Small and medium-sized vertical axial-flow pumps and vane-type mixed-flow pumps are widely used in drought resistance and drainage in plain polders in my country. During the operation of axial flow pumps and guide vane mixed flow pumps, the head of the pump device often changes with the upstream and downstream water levels. Under a certain pump head, it corresponds to a certain blade angle, so that the efficiency of the pump device is the highest, and the variable angle economy of the pump station is realized. To operate, it is necessary to be able to adjust the blade angle of the pump in time; by adjusting the blade angle,...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above-mentioned small and medium-sized vertical axial flow pumps and vane-type mixed flow pumps with semi-adjustable vane angles and no actual adjustment, resulting in large operating energy consumption and inability to change the flow rate, and proposes a small and medium-sized vertical pump with simple structure and easy implementation. The mechanical blade full adjustment device and design method of the pump can adjust the blade angle at any time when the water pump is running or shutting down, with high adjustment accuracy, so as to improve the efficiency of the pump device, reduce the energy consumption of the operation and adjust the flow.

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