The working principle and structural characteristics of volute dewatering screw press

- Apr 27, 2018-

Volute dewatering screw press has been widely used due to its superior performance, such as it has been widely used in municipal sewage treatment engineering and water treatment systems in petrochemical, light industry, chemical fiber, paper, pharmaceutical, leather and other industrial industries. The actual operation proves that the spiral screw dewatering screw press can create considerable economic and social benefits for customers.


Volute dewatering screw press working principle:


First, in the enrichment phase, during the operation of the volute dewatering screw press, the internal structural components of the screw rotate when the propeller shaft is rotated, and the multiple solid laminated sheets disposed on the periphery of the propelling shaft relatively move, under the action of gravity, the water It is filtered out from the relatively moving lamination gap and achieves rapid concentration.


Then, during the dehydration process, as the whirling volute dewatering screw press continues to operate, the concentrated sludge moves forward with the rotation of the screw shaft; along the mud cake exit direction, the pitch of the screw shaft gradually becomes smaller, and the ring The gap between the ring and the ring also gradually becomes smaller and the volume of the spiral cavity shrinks. At the same time, with the effect of the back pressure plate at the outlet, the internal pressure gradually increases, and the water in the sludge is squeezed and discharged under the continuous operation of the screw pushing shaft, and the solid content of the filter cake is continuously increased, thereby realizing the sludge. Continuous dehydration.


Then the device also has the function of self-cleaning, because during the operation of the volute dewatering screw press, with the rotation of its screw shaft, pushing the continuous rotation of the moving ring, the device relies on the movement between the fixed ring and the moving ring. A continuous self-cleaning process is achieved, which ingeniously avoids the common plugging problem of traditional dewatering machines.


Volute dewatering screw press structural features:


From the aspect of structural design analysis, in fact, we can consider the spiral screw dewatering screw press as a separation equipment that uses centrifugal sedimentation to continuously separate the suspension. Judging from the current application results, the screw stack dewatering screw press has the advantages of large processing volume, low energy consumption, compact and reasonable structure, and easy maintenance.