PLD 8000/1000/1250/1600/1800 Bag-pulling Bottom Discharge Scraper
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.
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
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:
- 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.
- Design of removable lip ring in the basket with reliable
self-locking, which is easy for changing the filter cloth.
- External cylinder+rod drive design, reliable in work
- Fully-enclosed discharge hopper design separating the material from
the driving components of the centrifuge.
◇ External construction: Multiple constructionsincluding big hinged
cover, fully hinged cover and flatcover
◇ Feed type: Inclined feed disk, side feed pipe, middlefeed pipe
and material level detection device
◇ Scraper discharge: Pneumatic, hydraulic and liquid-phase skimming
◇ Motor drive: Common motor, inverter-duty motor and
◇ Safety protection: Nitrogen protection (anti-explosion) system,
vibration protection, temperature protection, electric-mechanical
interlocking, speed monitoring and overload protection.
◇ CIP system: Cleaning ball and spray pipe
◇ Washing mode: Atomized nozzle rinsing, feed disk washing, pulse
◇ Nitrogen protection system: Automatic control device,hydraulic
sealing device and gas-liquid separator.
Rapid replacement of PLD pulling bag:
Step1: open the lid (hydraulic operation)
Step2: Take down the snap ring of basket lip of filter bag and take
out the steady pin of liquid interception plate and life out the
liquid interception plate.
Step3: Take down the snap ring under filter bag and take out the
old filter bag.
Step 4: install the new filter bag and tension the snap ring under
Step 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.
Step 6: close the flip and lock it.
Step 7: inspect the fitting condition of filter bag and confirm it
by pulling bad.
Main technical parameters
Basket Dia (mm)
Basket Volume (L)
Max. Load (kg)
Max. Rotating speed (r/min)
Dimension (L*W*H) (mm)