screw press dehydrator

The screw press dehydrator is a kind of equipment commonly used in the field of solid-liquid separation, which is mainly used to separate and dehydrate the solid particles suspended in the liquid. Its structure is complex but efficient, and its structure and working principle will be introduced in detail below.

1. Structure

The main structure of the screw press dehydrator includes a feed system, a press system, a slag discharge system and a drive system.

Feed system: The feed system usually consists of a feed hopper, a feed pipe and a feed screw. The solid particles mixed with liquid enter the feed pipe through the feed hopper, and then are transported to the pressing area.

Pressing system: The pressing system is the core part of the screw press dehydrator, which includes the main shaft, propeller, screen drum and filter screen. The main shaft is fixed in the casing, and the propeller is located on the main shaft, which is responsible for pushing the mixture to the screen drum. The outer layer of the sieve drum is covered with a filter screen. When the mixture is pushed to the screen, the liquid leaks through the screen, and the solid particles are squeezed on the screen. With the rotation of the propeller, the solids are gradually squeezed.

Slag discharge system: The slag discharge system is used to discharge the pressed solid particles from the screw press dehydrator. Usually, the slag discharge port is located on one side of the casing, and the solid particles can be discharged by opening the slag discharge door.

Drive system: The drive system is composed of motor, reducer and transmission. The motor transmits power to the main shaft and propeller through the reducer and transmission device, thus driving the whole pressing process.

2. Working principle

The working principle of the screw press dehydrator is based on the basic principle of solid-liquid separation, that is, the use of mechanical force to separate solid particles from liquid.

Feeding: The mixture enters the screw press dehydrator through the feeding system and enters the pressing area.

Pressing: In the pressing area, the rotation of the propeller pushes the mixture towards the screen drum, the solid particles are squeezed on the screen, and the liquid leaks out through the screen. With the continuous rotation of the propeller, the solid particles are gradually compressed, and the liquid in them is removed as much as possible.

Slag discharge: The pressed solid particles are pushed from the screen drum to the slag discharge port, and are discharged out of the screw press dehydrator through the slag discharge door.

Collecting liquid: The liquid that emerges from the pressing process is usually collected through the equipment's drainage system for subsequent treatment or recycling.

The screw press dehydrator can efficiently separate the solid particles from the liquid through the repeated pressing process, so as to achieve the effect of dehydration. It is compact in structure and easy to operate, and is suitable for many fields, such as sewage treatment, food processing, metallurgy, etc.

Summarize

The structure and working principle of the screw press dehydrator make it one of the important equipment in the field of solid-liquid separation. Through the steps of feeding, pressing, and slag discharge, it can efficiently separate solid particles from liquid, and plays an important role in environmental protection, industrial production and other fields.

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