PLD series bag-pulling bottom discharge scraper centrifuge is a type of new product with fully independent intellectual property independently developed by us. This series centrifuge retains such primary functions offered in the LGZ series as the solid- liquid separation and scraper discharge, and adds such function as to remove the residual solid cake by pulling filter cloth with the removal rate higher than 99%. PLD series avoids crossing and mixing of different batches of separated products, and also eliminates the effects of the residual solid cake on the basket wall. It is mainly used in the solid-liquid separation process in such industries as pharmacy, food, gourmet powder and chemistry.

Operating principl

　　Material to be separated enters into the basket of the centrifuge that is rotating at high speed through a feeding pipe, and under action of the centrifugal field, the material passes through the filter cloth (screen) for filtration. Then the liquid phase discharges through the discharge pipeline, while the solid phase is retained in the basket. Feeding stops once the basket is filled with the material, then wash the solid cake, and discharge the washing liquid through filtration. The centrifuge continues to rotate to spin - dry the solid cake. After the solid cake meets the requirements for separation, the centrifuge reduces its speed, and removes the cake by means of the scraper, then discharges the cake out of the centrifuge. The centrifuge further reduces its speed So that the pneumatic pulling bag device moves reciprocally to shake off the residual solid cake, thus completely eliminating the solid cake.

Operation procedures of PLD centrifuge

Main features of PLD centrifuge

In addition to all main features of the LGZ series centrifuge, the PLD series centrifuge features as follows:
1.Removing the residual solid cake by bag - pulling method. Eliminate all solid cakes left over the process of scraper discharging through reciprocal movement of the pneumatic pulling bag device, to realize complete discharging and filtering cloth regeneration.
2.Design of removable lip ring in the basket with reliable self-locking, which is easy for changing the filter cloth.
3.External cylinder+rod drive design, reliable in work
4.Fully-enclosed discharge hopper design separating the material from the driving components of the centrifuge.

Optional configurations

1.External construction: Multiple constructions including big hinged cover, fully hinged cover and flat cover
2.Feed type: Inclined feed disk, side feed pipe, middle feed pipe and material level detection device
3.Scraper discharge: Pneumatic, hydraulic and liquid-phase skimming disc
4.Motor drive: Common motor, inverter -duty motor and explosion- proof motor
5.Safety protection: Nitrogen protection (anti-explosion) system, vibration protection, temperature protection，electric-mechanical interlocking， speed monitoring and overload protection.
6.CIP system: Cleaning ball and spray pipe
7.Washing mode: Atomized nozzle rinsing, feed disk washing, pulse type washing
8.Nitrogen protection system: Automatic control device,

1.Scraping Oil Cylinder
2.Machine Lid
3.Shell
4.Drum
5.Filter Bag Supporting Jacket
6.Bearing Seat

7.Cover Opening Oil Cylinder
8.Motor
9.Hanyiny Bay Cylir luel
10.Shock Absorber
11.Base Plate
12.Manhole

13.Liquid Skimming Device
14.Explosive-proof Light
15.Washing Pipe
16.Feeding pipe
17.Material Level Detector
18.Water Outlet Pipe

Rapid replacement of PLD pulling bag

1.open the lid (hydraulic operation)
2.Take down the snap ring of basket lip of filter bag and take out the steady pin of liquid interception plate and lift out the liquid interception plate.
3.Take down the snap ring under filter bag and take out the old filter bag.
4.install the new filter bag and tension the snap ring under filter bag.
5.install the liquid interception plate and steady pin of liquid interception plate and tension the snap ring of liquid interception port of filter bag.
6.close the flip and lock it.
7.inspect the fitting condition of filter bag and confirm it by pulling bag.

◆Operation instruction and video about pulling bag replacement are provided and replacement time is about 30min.

PLD Main technical parameters

Items	Models
	PLD 1000	PLD 1250	PLD 1400	PLD 1600	PLD 1800
Basket Dia(mm)	1000	1250	1400	1600	1800
Basket Volume(L)	180	400	600	800	1250
Max.load(kg)	230	500	700	1000	1500
Max.Rotating speed(r/min)	1100	1000	950	850	800
Centrifuge force	677	700	700	647	645
Motor(kw)	15	22	30	37	55
Dimension(LxWxH)(mm)	2200*1500*2200	2400*1800*2550	2800*2100*2720	3000*2200*3000	3500*2500*3300
Weight(kg)	3500	5000	9000	12000	17000