PGZ800 Automatic bottom discharge scraper continuous flow centrifuge

1)Chemical Industry:gypsum,ammonium sulphide,bluestone,potassium chloride,borax, dyestuff,

resin,pesticide.
2)Pharmaceutical Industry:salt,monosodium glutamate,food additive,starch,sugar,flavoring, antibiotic,vitamin.
3)Food Industry:sodium glutamate.
4)Mine and Metallurgy Industry:copper,zinc,minerals,and metal refining.
5)Environmental Protection Industry:pure water sludge and sewage sludge.

Structure and Principle

It adopts platform structure, with out shell welded with bottom plate. Shell cover is fixed to shell body with flange. Hydraulic pressure is applied to open the cover. Shell cover is equipped with feeding pipe, washing pipe sight glass, viewing-light, scarper device etc.. Standard flanges are applied for the external pipe joints.

It is a kind of vertical centrifuge with PLC control, automatic filtration type and down scraping discharging, which adopts continuously running and intermittent discharge. Driven by the motor, the drum rotates step by step to the speed suitable for feeding, then the products which is to be separated enter to the rotating drum through feeding pipe, Centrifuge would stop feeding if the products' volume amounts reach to the predetermined data and the speed raises higher for separation. Suspension's separation can be made possible by filter cloth (or filter net) under the effect of centrifugal force. Liquid phase is draught out through filter layer and thrown into the empty chamber and finally discharged from liquid outlet while the solid phase remains on the drum to form bucket-shaped filter cake which will be washed in the following steps. When filter cake meets the requirement of separation, centrifuge will be slowed down to the discharging speed. The scraper begins to take effect and scrape the filter cake from inner wall to the products outlet of centrifuge.

Main Features

1)The centrifuge adopts whole enclosed structure with dependable seal facility which is filled with nitrogen to meet the explosion proof demand.

2)Adopted with quick big open cover structure and the optional swash plated distributor, products can be distributed evenly to reduce vibration caused by unbalanced distribution. With additional washing function, it has a better cleaning effect.

3)The motor is set on top of the machine and directly linked to main shaft which will bring higher transmission efficiency and reduce friction powders.
4)Pneumatic assisted scraper is adopted to remove the remnant filter cake and CIP system is optional to secure clarity to be in accordance with GMP.

5)Frequency control system is adopted to assure a stable start-up. PLC is adopted to ensure a complete automatic process including feeding, filtering, washing and discharging etc. It adopts dynamic (regenerative) braking without friction powder pollution and friction heat,it is much safer.
6)No need of human supervision. Following security systems are adopted: self-monitoring and protecting system, speed inspection, product level detection, over-vibration protection, over-heat protection for motor, mechanical and electric double interlock for scraper totary and movement, interlock for cover's open and machine's running.

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