A vertical screw conveyor conveys materials upward in a vertical path. It requires less space than some different types of elevating conveyors.
A vertical screw conveyor conveys materials upward in a vertical path. It requires less space than some different types of elevating conveyors. Vertical screw conveyors are also referred to as ‘Lifts’ or Elevators. A vertical screw conveyor can handle most of the bulk materials provided there is no large lump. The utmost height is usually limited to 30m.
The vertical screw conveyors system is a great solution to several material managing problems by providing a cost-effective elevating action with minimum space requirements. The vertical is fed by a horizontal feed screw which is synchronized with speed and feed rate. Both the feed screw and the vertical are driven by self-sufficient screw conveyor drives.
A vertical screw conveyor consists of a screw revolving in a vertical casing. The top bearing for the screw shaft must be intended to stand against radial & thrust loads. Appropriate inlet ports at the lower end as well as a discharge port at the upper end of the casing are provided. Feeding vertical screw conveyors merit careful consideration. Most materials are fed to the vertical conveyor through a straight or offset horizontal feeder conveyor. The perfect operation of a vertical screw conveyor is to have a controlled and consistent volume of material feeding.
Uneven feeding and start-stop operation may badly affect the performance of the vertical screw conveyors in terms of speed, capacity & horsepower.
Material with huge discrepancies in particle size, or very large lumps tends not to properly convey in a vertical screw. Generally, free-flowing material that does not degrade will work correctly in a vertical screw. Friable material along with very fine powders that aerate will often have issues working correctly in a vertical screw.
Extremely dense material that has little to no compressive capability may not convey properly because of the fully-loaded condition & speed at which a vertical screw operates.
Because of the high speeds and full contact of the material to the screw, abrasive materials may quickly degrade components, with prematurely wearing seals and drive components.
Vertical screw conveyors or several special designs of vertical screw conveyor find broad application in ship unloading.
Practical experience with these conveyors has exposed that the resistance factor for vertical conveyors is more than those of horizontal conveyors. Resistance factor λ might be taken as 5.5 to 7.5 for grains. 6.5 to 8.3 for salt.
SAKSHAM vertical screw conveyor system is a great solution to numerous material handling problems by providing a cost-effective elevating action with the smallest space requirements. Both the feed screw and the vertical are driven by self-sufficient screw conveyor drives. We offer this system in numerous materials of construction including carbon, abrasion-resistant, stainless, or any mixture. Although we have standards for the length of the feed screw, the height of the vertical and the diameter of each can be designed for each precise application.