Centrifugal pump
A centrifugal pump and impeller technology, applied in the field of centrifugal pumps, can solve problems such as unfavorable energy saving and consumption reduction, reduce the efficiency of centrifugal pumps, etc., achieve good economic benefits, improve cavitation performance and hydraulic efficiency, and improve operating efficiency
Inactive Publication Date: 2010-06-02
ZHEJIANG UNIV OF TECH
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Problems solved by technology
[0005] The invention solves the problem that the axial force balance structure of the existing centrifugal pump reduces the efficiency of the centrifugal pump and is not conducive to energy saving and consumption reduction, and provides a centrifugal pump that can effectively balance the axial force of the centrifugal pump and is also efficient and reliable
Method used
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Embodiment Construction
[0015] refer to figure 1 , figure 2 , a centrifugal pump, comprising an impeller 1, a shaft 2, a suction chamber, a volute, and a nut 3, the suction chamber is connected to the inlet of the impeller 1, and the conveying liquid flow enters the impeller 1, and the impeller 1 is installed in the volute, tightly Fixed on the shaft 2, the balance hole 4 used to balance the axial force is set on the contact surface between the impeller 1 and the shaft 2, the rear part of the balance hole 4 is the inlet, and it is set on the back of the root of the impeller 1 , the outlet of the balance hole 4 is located at the inlet of the liquid flow; the front part of the balance hole 4 is in a folded shape, so that the direction of the outlet is in the same direction as the flow of the inlet of the liquid flow.
[0016] The front part of the balance hole 1 reaches the nut 3, the end of the nut 3 is provided with an L-shaped retaining ring 5, and the wing plate of the L-shaped retaining ring 5 ...
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The invention relates to a centrifugal pump which comprises an impeller, a shaft, a suction chamber, a volute and a nut, wherein the suction chamber is connected at an impeller inlet, a conveying liquid flow enters into the impeller, the impeller is mounted in the volute and fastened on the shaft, a balance hole used for balancing axial force is formed on the contact surface between the impeller and the shaft, an inlet is formed at the back of the balance hole and arranged on the back surface of the root part of the impeller, and an outlet of the balance hole is formed at a liquid flow inlet; and the front part of the balance hole is in the shape of turn-back, thereby leading the direction of the outlet to be consistent with the flow direction of the liquid flow inlet. The centrifugal pump has the benefits that the centrifugal pump improves the running operation of the centrifugal pump, improves the cavitation performance of the centrifugal pump and the hydraulic efficiency and has good economic benefits.
Description
technical field [0001] The invention relates to a centrifugal pump. Background technique [0002] Centrifugal pumps have many advantages such as wide range of performance, stable flow, simple structure, reliable operation and convenient maintenance. Therefore, centrifugal pumps are the most widely used in industrial production. The axial force balance technology of centrifugal pump is the key technology of centrifugal pump, and the balance of axial force of centrifugal pump is directly related to the reliability and life of centrifugal pump. [0003] The balance hole is a widely used centrifugal pump axial force balance technology. By opening the balance hole on the impeller, the axial force of the centrifugal pump can be effectively balanced, and the mechanical efficiency of the centrifugal pump can be improved. [0004] The balance hole has a simple structure and is easy to process. However, traditional centrifugal pumps refer to image 3 , the balance hole 4' increases...
Claims
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Inventor 张生昌张华军张金海邓鸿英张鹤
Owner ZHEJIANG UNIV OF TECH