推进机械搅拌发酵的旋转方向将使叶片前表面成为螺旋面的一部分，后表面成为

Promoting the rotation direction of the mechanical stirring fermentation will make the front surface of the blade become a part of the spiral surface, and the rear surface becomes the commonly used secondary paraboloid or round surface. The spiral surface cannot be expanded, so we can only expand the blade in an approximate manner. If the plane perpendicular to the stirring axis is used as the projection surface of the blade, and then the projection of the blade cross section on the projection surface is approximately expanded, the expansion surface of the propeller blade of the propulsive mechanical stirring fermentation tank can be obtained The actual width of the blade.

推进机械搅拌发酵的旋转方向将使叶片前表面成为螺旋面的一部分，后表面成为常用的二次抛物面或圆形表面。螺旋面不能展开，所以我们只能以近似的方式展开叶片。如果将垂直于搅拌轴的平面作为叶片的投影面，然后将叶片截面在该投影面上的投影近似展开，则可以得到推进式机械搅拌发酵罐的螺旋桨叶片的展开面，在展开面上可以得到叶片的实际宽度。

To promote the rotation direction of mechanical agitation fermentation will make the front surface of the blade become a part of the spiral surface, and the back surface become the commonly used secondary paraboloid or circular surface. The helix can not be expanded, so we can only expand the blade in an approximate way. If the plane perpendicular to the mixing shaft is taken as the projection surface of the blade, and then the projection of the blade section on the projection surface is approximately expanded, the expanded surface of the propeller blade of the propulsion mechanical mixing fermentor can be obtained, and the actual width of the blade can be obtained on the expanded surface.<br>