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Horizontal scraper (peeler) centrifuges

PLD pull action filter centrifuges

Scraper acts in unloading process and most materials are discharged out of machine through the discharge port at the bottom of basket under the action of scraper, while the residual materials are completed cleared by the vibration generated by the automatic pulling mechanism inside basket.

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Vertical Series

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Detail

PLD pull action filter centrifuges

Principle of Operation

During the discharging process, the scraper operates to scrap filter cake, most of the cake is discharged out from the machine via the outlets at the basket bottom, and the residual cake is released from the filter cloth and then completely falls vertically downwards out of the centrifuge because the filter cloth is stretched downwards and oscillated by the automatic sack pulling mechanism inside the housing.

Main features

The machine adopts variable frequency drive speed regulation and fully automatic control, has all the advantages of an ordinary vertical scraper centrifuge, with fully automatic operation for sack stretched downwards and returning. The filter cloth sack can move up and down inside the basket, producing an oscillation effect that can completely remove residual heel. The fully openable housing cover or housing can be selected according to customer’s requirements. Optional residual heel removal device and external or internal sack stretching mechanism are available.

Principle of Operation

The pneumatically activated pull mechanism drives the lower edge of the filter cloth sack to move up and down rapidly, which causes the filter cloth sack to oscillate so that the residual heel might be removed thoroughly. A special blocking component is installed between the bottom of the sack pulling cover and the discharge outlet, which has been proven to effectively block the solids from entering the back of the filter cloth during the sack pulling action so that the scraper would not damage the filter cloth. The sack pulling cylinder rotates synchronously with the main shaft pulley without relative motion and vulnerable components.

Sack pulling drive method

1. Internal cylinder type: The cylinder driving the sack pulling cover is set directly below the shaft pulley and connected directly to the draw rod. Advantages: Compact design; Simple and beautiful appearance; Easy belt replacement.

2. External cylinder type: The cylinder driving the sack pulling cover is set on the side of the bearing housing and connected to the sack pulling shaft through a connecting rod. Advantages: High sack pulling velocity.

PLD series centrifuge Standard Sizes and Technical Data

Model	PLD-800	PLD-1000	PLD-1250		PLD-1350	PLD-1400		PLD-1600		PLD-1680		PLD-1800
Basket diameter（mm）	800	1000	1250		1600	1400		1600		1680		1800
Basket height（mm）	400	500	500	630	800/720	700		720	800	740		800	1000
Loading volume（L）	95	175	320	425	800/720	720		765	855	950		1055	1300
Loading limit（Kg）	115	210	400	520	1000/870	600		920	1025	1140		1265	1560
Basket speed（r/min）	1500	1200	1000	1200	850	970	1150	950	850	850	900	800
"g" force（Fr）	1007	805	698	1006	646	730	1033	807	646	646	761	645
Motor Power（kw）	7.5	15	18.5	22	37	37		37	45	39	45	55
External dimension（mm）	1800×1500×2300	2100×1600×2750	2300×1800×2950	2300×1800×3050	3000×2400×3100	2600×2000×3400		3000×2400×3950		3000×2400×3950		3230×2630×4970	3280×2630×5020
Machine weight (kg)（Kg）	2300	4500	5600	6000	12000	9500		12000	12500	140000		17000	18500

Specifications	Basket diameter（mm）	Basket height（mm）	Basket volume（L）	Loading capacity（Kg）	Speed（r/min）	Separation factor(Fr）	Motor power（kw）	Dimension（mm）	Weight（Kg）
PLD-800	800	400	95	115	1500	1007	7.5	1800x1500x2300	2300
PLD-1000	1000	500	175	210	1200	805	15	2100x1600x2750	4500
PLD-1250	1250	500/630	320/425	400/520	1000/1200	698/1006	18.5/22	2300x1800x2950 2300x1800x3050	5600/6000
PLD-1350	1350	630	445	534	120	1086	30	2600x2000x2900	6000
PLD-1400	1400	700	600	720	970/1150	730/1033	37	2600x2000x3400	9500
PLD-1600	1600	720/800	765/855	920/1025	950/850	807/646	37/45	3000x2400x3950	12000/12500
PLD-1680	1680	740	950	1140	850/900	646/761	37/45	3000x2400x3950	14000
PLD-1800	PLD-1800	800/1000	1055/1300	1265/1560	800	645	55	3230x2630x4970 3280x2630x5020	17000/18500