High Quality for Coolant Filtration Paper - 4New LE Series Centrifugal Filter – 4New

Application Introduction

● LE series centrifugal filter developed and manufactured has a filtering accuracy of up to 1um. It is especially suitable for the finest and cleanest filtration and temperature control of grinding fluid, emulsion, electrolyte, synthetic solution, process water and other liquids.
● LE centrifugal filter maintains the used processing fluid optimally, so as to prolong the service life of the fluid, improve the surface quality of the workpiece or rolled product, and obtain the best processing effect. It has been verified in many industry branches, such as super finishing and fine grinding in metal, glass, ceramics, cable and other processing industries.
● LE centrifugal filter can meet the requirements of single machine filtration or centralized liquid supply. The modular design makes the processing capacity of 50, 150, 500L/min, and the processing capacity of more than 10000L/min can be obtained by multiple machines in parallel.
● The following equipment is usually provided:
● High precision grinding machine
● Honing machine
● Grinding and polishing machine
● Engraving machine
● Washer
● Rolling mill
● Wire drawing machine

Outline Layout

● The liquid to be filtered enters the centrifuge through the auxiliary pump.
● The impurities in the dirty liquid are separated at high speed and attached to the inside of the tank.
● The pure liquid is drained back to the oil sump.
● After the inside of the tank is filled with impurities, the centrifuge starts the automatic slag removal function and the drain port is opened.
● The centrifuge automatically reduces the rotation speed of the tank, and the built-in scraper starts to operate for slag removal.
● The impurities removed fall from the discharge port to the impurity collection tank under the centrifuge, and the centrifuge starts to operate.

Operation Mode

● LE centrifugal filtration system realizes solid-liquid separation, clean liquid reuse, and filter residue discharge through high-speed centrifugation. Only electricity and compressed air are consumed, no filter material is consumed, and the quality of liquid products is not affected.
Process flow
● Dirty liquid return → liquid return pump station → high-precision centrifugal filter → liquid purification tank → temperature control (optional) → liquid supply system → safety filter (optional) → use of purified liquid.
Filtering process
● Dirty liquid is delivered to the centrifuge together with impurities through the return liquid pump station equipped with 4New professional PD cutting pump.
● The high-speed rotating centrifuge makes the impurities in the dirty liquid adhere to the inner wall of the hub.
● The filtered liquid will flow into the liquid purifying tank, be temperature controlled (cooled or heated), be pumped out by the liquid supply pump with different flow pressures, and be sent to each machine tool through the liquid supply pipe.
Blowdown process
● When the impurities accumulated on the inner wall of the hub reach the preset value, the system will cut off the liquid return valve, stop filtering and start drying.
● After the preset drying time is reached, the system will reduce the rotating speed of the hub and the built-in scraper will start to remove slag.
● The scraped dry filter residue falls into the slagging box below the centrifuge from the discharge port.
● After the system self inspection, the hub rotates again at high speed, the liquid return valve opens, and the next filtering cycle starts.
Continuous liquid supply
● Continuous liquid supply can be realized by multiple centrifuges or safety filters.
● 4 New’s unique undisturbed switching keeps the cleanliness of the processing fluid stable during continuous liquid supply.

Main Technical Parameters

LE centrifugal filter adopts modular design, with filtering capacity of more than 10000 l/min. It can be used for single machine (1 machine tool), regional (2~10 machine tools) or centralized (whole workshop) filtering. All models can provide full-automatic, semi-automatic and manual operation.

Note 1: Different processing fluids and impurities have an impact on the filter selection. For details, please consult 4New Filtering Engineer.

Main product function