High-performance arc surface mixing propeller provided with diversion trench
A high-performance belt and stirring paddle technology, which is applied in the field of stirring paddles, can solve the problems of poor stirring effect, reduced stirring performance, and high energy consumption index of folding blade paddles, and achieve good stirring effect, increased flow rate, and low energy consumption.
Active Publication Date: 2013-06-05
SHENYANG ALUMINIUM MAGNESIUM INSTITUTE
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Problems solved by technology
Folding paddles have the following problems: (1) Since the blades of the folding paddles are an inclined plane, the liquid flow suddenly turns when it encounters the blades, resulting in large resistance; (2) The flow direction of the fluid turns when it encounters the stirring blades Finally, not all of them are discharged from the lower part of the agitator blades, but most of them are discharged from the lower part of the agitator blades, and a small part is discharged from the upper part of the agitator blades, which reduces the stirring performance.
Therefore, the stirring effect of the folding blade paddle is poor, but the energy consumption index is relatively high
Method used
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[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0014] As shown in the figure, a high-performance stirring paddle with a diversion groove arc surface of the present invention includes a paddle blade 5, and the section of the paddle blade 5 is arc-shaped or approximately arc-shaped; the tangent line of the upstream side of the paddle blade 5 The direction is parallel to the direction of rotation of the paddle blades; under the paddle blades 5, a flow guide groove is set near the root 8 and the end 7, and the direction is the same as the rotation direction of the blades; Deviated to the center of the stirring shaft; the direction of the guide groove 6 at the end 7 of the stirring paddle blade 5 is biased towards the bottom corner of the groove; the width of the stirring paddle blade 5 gradually narrows from the root 8 to the outer end, and the outer end is chamfered, and the The outflow edge 9 is gradually c...
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The invention relates to a mixing propeller which is applied to stirring mixing of various diversion trenches in the aluminum oxide industry, in particular to a high-performance arc surface mixing propeller provided with diversion trench requiring high in uniformity. The high-performance arc surface mixing propeller provided with the diversion trench comprises mixing propeller blades and is characterized in that the section of each mixing propeller blade is in an arc shape or in a shape similar to an arc, the tangential direction of an incident flow edge of each mixing propeller blade is parallel to the rotation direction of each mixing propeller blade, a current guiding groove is formed in the end portion, close to a root portion, below each mixing propeller blade, and the current guiding grooves are the same in rotation direction as the blades. The high-performance arc surface mixing propeller has the advantages of being low in stirring energy consumption and good in stirring effect, improving blade stirring performance, remarkably solving the problem of material accumulation at bottoms of the grooves, and reducing energy consumption by more than 40% compared with a folded-blade propeller of the same specification.
Description
technical field [0001] The invention relates to a stirring paddle, which is suitable for stirring and mixing of various stirring tanks in the alumina industry, and is especially suitable for a high-performance stirring paddle with a diversion groove and an arc surface, which requires high uniformity in the stirring tank. It has the characteristics of high mixing uniformity, low energy consumption and good sedimentation inhibition. Background technique [0002] At present, in the production process of alumina hydrometallurgy, paddle-type stirring devices are usually used in various stirring tanks, and the stirring paddles are in the form of folding paddles. The blade of the folding paddle is a flat plate, which forms an included angle with the rotary surface, about 30°-45°, and the direction of inclination is opposite to the direction of rotation of the liquid flow. When working, the central shaft drives the stirring paddle to rotate in a circle, and the liquid moves downwa...
Claims
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Inventor 张超李志国
Owner SHENYANG ALUMINIUM MAGNESIUM INSTITUTE