Explosion Proof Continuous Pharmaceutical Industrial Centrifuge

Product Description

Product Introduction of shenzhou decanter centrifuge
The centrifuge is used in explosive or flammable applications in chemical industry, petrochemical industry, pharmacy industry and other industries.
What is a Decanter Centrifuge and How Does it Work? Description of a Decanter Centrifuge A decanter centrifuge, also known as a horizontal bowl centrifuge, solid bowl centrifuge or scroll centrifuge, is a machine used to separate a solid material from a liquid(s) using a high-speed and continual rotational process. While wastewater treatment of biosolids is a primary application, the separation of one solid material from one liquid (2-phase dewatering) in a slurry is also important for a number of industries including chemical, food, oil, and mining to name a few.


How it Works The separation of a solid and liquid(s) in a decanter centrifuge system work on the principle of gravitational forces. Whereas it takes considerable time for the gravitational separation of a muddy mixture (to fall to the bottom) and water (to rise to the top) in separation technologies based on 1xG separation such as,a static container, clarifier or lamal separator, the rapid rotation of a centrifuge greatly speeds up this gravitational principle.
In fact, the G-force generated by a decanter centrifuge can be well in excess of three-thousand times greater than gravity reducing the separation process from hours to mere seconds. Today's centrifuges are a counter-current type technology. The separation process in a 2-phase decanter centrifuge results in the denser solid particles to be compacted and settled out in the inner drum and then transported and removed via solids discharge end of the decanter. The centrate is routed to the opposite end of the centrifuge and removed via the centrate outlet. In a 3-phase centrifuge, the baffle system is built inside the centrifuge. The baffle system blocks the oil from being discharged with the water. The oil (the lighter phase fluid) is collected between the two baffles and skimmed off the top.
Structure and principle of airtight sealThe gas-tight seal is a special structure consisting of the mechanical seal and inert gas supply device. It effectively prevents the external air from penetrating into the inner chamber of the centrifuge, and prevents the gas inside the centrifuge from leaking into the external environment. The seal device consists of several seal rings and glands, and separates the inner chamber of the centrifuge from the surrounding environment. The inert gas is injected into the space among the seal rings, and then penetrates into the inner chamber of the centrifuge and the external environment through the narrow sealing clearance. The pressure of inert gas is higher than those of the inner chamber of the centrifuge and the external atmosphere, therefore ,entrance of air into the inner chamber of the centrifuge or escape of the gas out of the inner chamber of the centrifuge can be avoided.
Products Features
The centrifuge is used in explosive or flammable applications in chemical industry, petrochemical industry, pharmacy industry and other industries, and any leakage of gas into the external atmosphere is prohibited in the course of solid-liquid separation, or used in solid-liquid separation in applications in which explosion may be caused if the external air enters the inner chamber of the centrifuge. Both ends of the bowl and the liquid outlet are airtight to achieve the airtight and f|ame proof effect.
Technical Parameter of Shenzhou decanter

Model	Blow Diameter	L/D Ratio	Bowl Speed	G-force	Main Motor Power	Weight	Dimension
LWF355*1460	350	4.17	4000 r/min	3100	22kW	2020kg	3235*1010*1029mm
LWF420*1680	420	4	3500 r/min	3080	30-37kW	3500kg	3459*1320*1303mm
LWF530*2120	530	4	3200 r/min	3040	45-55kW	4200kg	4054*1650*1431mm
LWF720*2880	720	4	2500 r/min	2516	90-110kW	11000kg	5280*2033*1720mm

The basic operation includes the following centrifuge parts and how they function:
The feed material enters the centrifuge via the feed pipe inlet on one end of the centrifuge
Due to centrifugal force, the heavier particles are pushed through the liquid and collected on the inner wall of the bowl; the high speed rotation of the bowl separates the solids and liquid materials
The continuous rotation of the bowl can be accomplished by a VFD (Variable Frequency Drive)
The scroll conveyor (scroll) inside the bowl rotates at a slightly different speed than the bowl (differential speed)
The scroll conveyor continuously scrapes the solids off the inner bowl wall and moves the solids in the direction of the centrifuge conical's solids discharge area
The liquid (centrate) moves in the opposite direction from the solids due to Pascal's Law (or a system of combined piping) and because the solids discharge end is sealed by the solids
The differential speed of the centrifuge controls the solids retention time; the longer the solids are under g-force the drier the solids become in the dewatering process

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