Screw press is a common equipment used for dehydration of solid granular materials. Its structure is complex and precise, and it can efficiently remove water from materials, so as to achieve the purpose of solid-liquid separation. This article will introduce the basic structure and working principle of the screw press.
1. Structural composition
The structure of the screw press includes the following main parts:
Feed system: The material enters the screw press through the feed port, and is usually conveyed to the feed port by conveyor belts, screw conveyors, etc.
Screw propulsion system: The most important part of the screw press machine is the screw propulsion system. The system consists of a screw shaft, a screw blade, a screw barrel, etc. The spiral blades are helically arranged along the screw shaft, and the materials are pushed forward by rotation, and the materials are squeezed and separated during the process of advancement.
Liquid drainage system: The liquid drainage system of the screw press is used to separate the liquid in the material. The propulsion of the spiral blade makes the material continuously push in the spiral cylinder, and at the same time, the liquid is squeezed out of the material and discharged through the sieve hole of the cylinder.
Pressing area: The pressing area is located in the middle of the screw propulsion system and is the main area where materials are squeezed and dehydrated. The dense arrangement of the helical blades makes the material be strongly squeezed in this area, thereby separating the liquid in it.
Discharge system: After being processed by the screw propulsion system and the liquid discharge system, the solid material is gradually dehydrated and pushed forward to the discharge port. The outlet is usually set at one end of the screw press to discharge the dehydrated solid material.
2. Working principle
The working principle of the screw press is based on the extrusion and separation process of the material:
Material feeding: The material enters the screw press through the feeding port and is pushed forward by the screw blades.
Squeeze separation: Under the action of the screw propulsion system, the material is squeezed in the press area, and the liquid in it is separated and discharged through the liquid discharge system.
Solid-liquid separation: In the spiral barrel, the solid particles are gradually dehydrated, the water is squeezed out of the material, and the solid particles continue to move forward.
Discharge discharge: the dehydrated solid material is finally pushed to the discharge port and discharged from the screw press to complete the entire dehydration process.
3. Application fields
Screw presses are widely used in many fields, such as sludge dehydration, food processing, chemical industry, etc. Its efficient dehydration ability and reliable working performance make it an important equipment in the field of solid-liquid separation.
In short, the screw press achieves efficient dehydration and solid-liquid separation of materials through its complex and precise structure. It plays an important role in various fields, providing reliable support for production and handling processes.
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