Vertical shaft-type double-turbine mixer

Abstract

The invention belongs to the technical field of environmental protection facilities, and discloses a vertical shaft-type double-turbine mixer. The vertical shaft-type double-turbine mixer comprises a parallel gear deceleration motor (1), an elastic fixing base (2), a hollow transmission shaft (4) and a turbine stirring impeller (5). The turbine stirring impeller (5) is in a shape of a concave taper. Long diversion stirring ribs (6) and short diversion stirring ribs (7) are arranged on an inner side of an arc surface of the concave taper and along the periphery. The long diversion stirring ribs (6) and short diversion stirring ribs (7) are arranged in intervals. Compared with common stirring equipment, the vertical shaft-type double-turbine mixer has excellent energy-saving advantages, and has power density of 1.5 to 2.0W / m<3>. Compared with a traditional underwater mixer, the vertical shaft-type double-turbine mixer has an energy saving rate of above 50 to 60% and can protect bods against damage.

Description

technical field [0001] The invention belongs to the technical field of environmental protection facilities and relates to a vertical-shaft twin-turbine mixer. Background technique [0002] In the urban sewage treatment process, the stirring of the mixed liquid is the key process. At present, most of the applications are double-blade paddles and multi-blade paddle mixers with the impeller shafts placed horizontally. The structure of these blades is suitable for specific mixing requirements. It plays a certain role, but there are more or less deficiencies, such as: such as the local flow velocity in the mixing area, the sludge mass passing through the impeller is easily broken, there is a certain dead angle of mixing, underwater drive motor, reducer maintenance It is more difficult, and the impeller is easy to hang with impurities. Moreover, the power density of ordinary agitators is as high as 5-8W / m 3 . Contents of the invention [0003] The object of the present invent...

AI Technical Summary

Problems solved by technology

[0002] In the urban sewage treatment process, the stirring of the mixed liquid is the key process. At present, most of the applications are double-blade paddles and multi-blade paddle mixers with the impeller shafts placed horizontally. The structure of these blades is suitable for specific mixing requirements. It plays a certain role, but there are more or less some deficiencies, such as: how high the local flow velocity in the mixing area is, the sludge mass passing through the impeller is easily broken, there is a certain dead angle of mixing, the underwater drive motor, and the maintenance of the reducer Difficult, the impeller is easy to hang with impurities, etc.

Moreover, the power density of ordinary agitators is as high as 5-8W / m 3

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