Single flow channel centrifugal pump capable of balancing radial force automatically

Abstract

The invention discloses a single flow channel centrifugal pump capable of balancing a radial force automatically. The Single flow channel centrifugal pump comprises a pump housing, an impeller, a pump shaft and a bearing box, wherein the impeller is mounted in the pump housing, and is in fastening connection with the pump shaft through impeller nuts; the impeller has only one blade, so that a single flow channel is formed; the pump shaft is mounted in the bearing box through a bearing and a bearing seat; a C-shaped balancing ring is fixed to the pump shaft, and adopts a notched annular structure; the balancing ring comprises an annular inner wall, an annular outer wall, a front cover plate and a rear cover plate; the balancing ring also adopts a sealing hollow structure, so that a balance weight unit which can slide freely is arranged inside the balancing ring; as the structure of the impeller and water power are dissymmetrical, the impeller has unbalanced radial force which is the main reason for leading the vibration of the pump. According to the single flow channel centrifugal pump, the balancing ring is arranged on the pump shaft, so that the balancing ring can be driven to rotate synchronously when the pump shaft rotates; being affected by the unbalanced radial force, the balance weight unit can slide to a position opposite to the radial force, so that the action of balancing the radial force is realized.

Description

technical field [0001] The invention belongs to the technical field of centrifugal pump manufacturing, in particular to a single-channel centrifugal pump that automatically balances radial force. Background technique [0002] The single-channel impeller is a spatially distorted flow channel from the inlet to the outlet. As a kind of sewage pump, the known single-channel pump has the characteristics of high efficiency, wide high-efficiency area, steep head curve, and good non-clogging performance. It is suitable for Conveying liquids containing debris such as particles or long fibers has advantages that other sewage pumps cannot match. However, this type of structural impeller has the following disadvantages: First, the single-channel impeller is an eccentric structure, and its mass distribution is uneven, and the center of gravity of the impeller is not on the axis line, resulting in mass unbalanced force; second, when the single-channel centrifugal pump is working, due to ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the single-channel centrifugal pump has the defects of large vibration and poor safety and reliability due to unbalanced radial force, and a single-channel centrifugal pump that can automatically balance the radial force is proposed

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