Working Principle
The working principle of the horizontal screw centrifuge is based on the action of centrifugal force. When working, the drum and the screw rotate at high speed in the same direction with a certain differential speed. The material is continuously introduced into the inner cylinder of the feeding screw from the feed pipe and enters the drum after acceleration. Under the action of the centrifugal field, the heavier solid phase is deposited on the drum wall to form a sediment layer, while the lighter liquid phase forms an inner liquid ring. Subsequently, the feeding screw continuously pushes the deposited solid phase to the conical end of the drum and discharges it out of the machine through the slag discharge port; at the same time, the inner liquid ring continuously overflows the drum from the overflow port at the large end of the drum and is discharged out of the machine through the liquid discharge port.
Structural features
The horizontal screw centrifuge has a compact structure and is mainly composed of components such as a drum, a screw propeller and a differential system. These components have been optimized and reorganized to greatly improve the overall performance stability and ensure production capacity and output. In addition, the horizontal screw centrifuge has the following characteristics:
Continuous operation: The machine can continuously feed, separate, wash and unload at full speed, which improves production efficiency. Smooth operation: The equipment operates smoothly, reducing the failure rate and maintenance costs.
Strong adaptability: It is suitable for separating solid phase particles with a particle size greater than 0.005mm and a concentration range of 2%~40%. It is suitable for a variety of materials.
Convenient maintenance: The equipment is reasonably designed and easy to maintain and maintain.
Application in sugar industry
In the sugar industry, decanter centrifuges are mainly used for solid phase separation in starch sugar production. Specific applications include.
Protein separation after liquefaction: after liquefaction of enzyme and starch milk slurry, cooling down, the decanter centrifuge is used to separate protein and drying, and then subsequent pH adjustment and saccharification operation. Protein separation after saccharification: after liquefied enzyme and starch milk conditioning slurry liquefaction, temperature reduction, pH adjustment and saccharification operation, then use the decanter centrifuge to separate the protein and drying, and finally get the syrup.
The application of decanter centrifuge in sugar industry has the following advantages.
No need to add filter aids: decanter centrifuge in the separation process does not need to add any filter aids, to avoid the addition of impurities on product quality.
High separation efficiency: decanter centrifuge has high separation efficiency, can quickly and effectively realize solid-liquid separation.
Good drying effect: compared with the vacuum drum and other separation equipment, decanter centrifuge separation of the solid phase is presented as a block, it is easier to carry out drying operations.
Significant economic benefits: decanter centrifuge can reduce production costs, improve product quality and yield, thereby increasing the economic benefits of enterprises.
Case Study
Take the starch sugar production line with an annual output of 100,000 tons as an example, applying the decanter centrifuge to the solid phase separation link, compared with the plate and frame filter, the decanter centrifuge can increase the by-product income of starch syrup and reduce the cost expenditure. Comprehensive calculation, the decanter centrifuge can increase the annual income of more than 1.4 million yuan for the enterprise.
Decanter centrifuge in the sugar industry has a wide range of application prospects and significant economic benefits. With the continuous innovation and development of technology, the performance of decanter centrifuge will be further improved, and make greater contribution to the development of sugar industry.