Efficient stirring turbine of vertical stirrer

Abstract

The invention discloses an efficient stirring turbine of a vertical stirrer. The efficient stirring turbine comprises a turbine body formed by rotating a set curve around any center axis and shaped like a horn with a small upper part and a big lower part, at least three main blades evenly arranged along the turbine body, at least three auxiliary blades evenly arranged along the turbine body, at least three flow guide holes evenly formed along the turbine body, a positioning hole and a mounting thread hole. The device is simple in structure, and can be used for increasing a flow rate in an area above the turbine body, eliminating a wake space with a low flow rate and sludge sediment at a pond bottom below the turbine body, and improving the efficiency of stirring sewage with poor flowability; proved by experimental comparison, under the same working condition, when the same stirring effect is achieved, the revolving speed of the stirrer adopting the stirring turbine is lower than that of a hyperboloid stirrer of the same specification by 3 to 6 percent, the energy consumption is reduced by 5 to 10 percent, and the energy saving effect is more remarkable for liquid with poor stirring flowability.

Description

technical field [0001] The invention relates to a turbine, in particular to a high-efficiency stirring turbine for a vertical mixer. Background technique [0002] In the activated sludge process of sewage treatment, the sewage in the biological pool is continuously stirred by the mixer to prevent sludge sedimentation, promote the growth and reproduction of beneficial microorganisms in the activated sludge, and achieve the purpose of separating organic matter in sewage. The mixers used for mixing sewage mainly include submersible mixers and vertical hyperboloid mixers. Because the vertical hyperboloid mixer is more energy-efficient than the submersible mixer, and the motor and reducer installed on the water are easy to maintain, it has been more and more widely used in the biological tank sewage mixing process in recent years. However, there are certain deficiencies in the actual engineering operation of the hyperboloid mixer. For example, the Chinese patent application numb...

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Problems solved by technology

However, there are certain deficiencies in the actual engineering operation of the hyperboloid mixer. For example, the Chinese patent application number 201220332811.8 discloses a hyperboloid mixer. Since the hyperboloid impeller of the mixer is only provided with blades on the lower part of the upper surface of the impeller body, The sewage in the pool is stirred unevenly. There is a dead water area with a very low flow rate above the impeller, and there is sludge

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