Siphon Tapioca Starch Processing 1550rpm Peeler Centrifuges With Screw Discharge

GKH Siphon Tapioca Starch Processing Peeler Centrifuge With Screw Discharge For Food Industrial

Technical Parameters

 
Operation process
Feeding
The material enters the rotating basket through the feeding pipe, and the cake layer controller controls n times of pulse feeding to fill the basket in limited manner. Usually, the material cake can reach 75-80% of the basket lip. Feeding is completed once the solid cake reaches the pre-set thickness.
 
Filtration Skimming-Filtration
The mother liquid penetrates through the filtration medium across the inner wall of the basket to complete the primary filtration, which begins as the material enters and ends as the liquid just immerses the inner surface of the solid cake. For the mother liquid containing colloid protein, the mother liquid containing the colloid protein will be removed by means of the skimming device in the course of filtration.
 
Washing
The solid cake is usually washed after the primary filtration. Add the washing liquid through the feeding pipe or washing pipe, and level of the washing liquid is monitored in the material level detector. Washing is completed once the pre-set washing load is achieved and the solid cake is immersed into the liquid.
 
Dry spinning
The basket accelerates to the high speed for drying the solid cake, and filtration is completed after the moisture content of the solid cake reaches the required value or the solid cake takes the pre-set drying duration.
 
Discharging
The solid cake is removed by the scraping device at high speed or that is decelerating, and the removed cake is discharged through the discharge mechanism. The solid phase can be discharged in two modes: discharging chute and scroll conveyor.
 
Regeneration of filter cloth
Residual solid cake can be found on the inner wall of the basket after the scraper discharges the material, the filtration basket can loosen the solid cake through the high-pressure gas on the back of the basket, and then remove the solid cake by means of the scraper device. In the siphon basket, the back washing liquid can be added into the basket from the high-level-mounted back washing tank through the suction chamber, and then reversely penetrates the residual solid cake so as to make the solid cake suspended and restore its permeability.

The siphon-type peeler centrifuge is applicable to the occasions involving large-scale production and requiring low cake moisture and sufficient washing, and therefore is commonly used for the separation of starch, sodium bicarbonate, potassium chloride, calcium phosphate and other materials. Currently, it has been widely applied in such industries as pharmaceutical production, food production, bioengineering and chemical engineering.

 
Advantages of peeler centrifuge
 
Feeding phase
As it can freely regulate the filtration rate, the filtration rate is reduced during feeding phase to prevent uniform distribution of the cake.
 
Filtration phase
Siphon pipe is lower level. With the column height Hu of additional liquid, the filtration rate is increased, and thus the processing capacity is increased by 50% within the same time.
 
Washing phase
Inlet of the siphon pipe is in higher level with less filtration pushing force being generated. The washing liquid flows slowly to extend the time of the washing liquid staying in the filter cake, thus reducing loss of the washing liquid and bringing about better effects of washing.
 
Dry spinning phase
The inlet of the siphon pipe is at the bottom with the maximum filtration pushing force, therefore moisture contained in the filter cake can be removed easily, and the moisture of the filter cake is reduced.
 
Back-washing function
After the scraper discharges the material, the siphon can inject washing liquid into the suction chamber from the outside, and then reversely force the liquid to flow into the basket for washing. Achieve good performance of washing the filter cloth with strong ability to regenerate.