INVESTIGATION OF THE MOVEMENT OF A SAPROPEL PARTICLE IN A FINAL INTAKE PART OF A SCREW MECHANISM

The article proposes the design of a mechanism for the extraction of sapropels in small and shallow water bodies. The mechanism allows not to dilute sapropel with water and to lift deposits of natural moisture from the bottom of the reservoir. This mechanism is easy to manufacture and operate, much cheaper than analogues, reliable in operation, mobile. Extraction of sapropels by the proposed mechanism improves the environmental performance at the extraction site, as it has a low siltation rate. To develop the design of the intake part of the mechanism, the motion of the sapropel particle during its interaction with the auger blade was analyzed. The dependences for determining the trajectory of sapropel particles in the intake part of the screw pump are theoretically derived. It is proposed to design the screw of the intake part of the mechanism so as to alternately place the intermittent blades with positive and negative values of the angle of inclination of the blade to the plane perpendicular to the axis of rotation of the auger. This will allow more intensive grinding of the compacted lower layer of sapropel. It is determined that the height of the conical intake part should be 2…3 times greater than the height of the screw. In this case, the sapropel particle will not be able to bounce off the blade and out of the conical part.