Products - Single systems - Filter systems - Vacuum filter VL

Filteranlage Vakuumfilter VL - KNOLL Maschinenbau GmbH

Areas of application

The vacuum filter VL is a high performance filter for cleaning the cooling lubricants of machining processes, in particular grinding processes. Depending on the requirement, several filter elements can be used for individual machines (locally) or machine groups (centrally). Its special efficiency is a result of high energy efficiency, low cooling lubricant loss and low disposal costs.

Properties

Production of pure concentrate with low residual moisture as standard without filter aids
Optimised filter capacity, filter quality and energy efficiency thanks to a flawless control system
Continuous filter process without reverse flushing intteruption
Forced degasification of coolant lubricants in the filter
Can be used for different machining processes, materials and coolant lubricants
Problem-free removal of light metal chips

Function

Filtering process

The contaminated liquid flows through the inlet box into the filter. It then runs through the filter belt into the filter chamber. From there, a filter pump conveys the filtered medium into the clean tank. The vacuum pump generates a vacuum in the filter chamber. The high pressure differential at the filtering surface creates a thick filter cake (concentrate) on the filter belt. This filter cake also acts as a filter medium and separates smallest dirt particles. The filter and vacuum pumps are regulated demand-driven and and provide for a tranquilized, constant filtering process.

Filter belt regeneration

The permeability of the filtering surface decreases as the filter cake grows. Now the belt drive switches on and conveys the carrier belt together with the filter belt a little further. Thereby, permeable filter belt reaches the filter surface and the volumetric flow through the filter surface continues to rise again. The feed length varies in such a way that the set clock cycle remains constant.

The endless filter belt passes through the following stations:

Filtering section (separation of the dirt particles)
Drying section (extraction of liquid from the concentrate)
Cleaning with air or brush (removal of the concentrate)
Backflushing (removal of the residual particles)

Downloads

Filter systems

Vacuum filter VL

Data sheet

pdf (377 KB)

Overview of our filter range:

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Vacuum rotation filter VRF

Filter systems for improving the quality of cooling lubricants. They are used to remove ultra-fine particles and foreign matter from the main filter system in the bypass flow.

ByPass bath maintenance filter

Automatic centrifugal separator for continuous ultrafine filtering of cooling lubricants and other industrial process fluids. Very good price-performance ratio. Max. filter output 120 l/min.

Fluid centrifuge CA 100

The HydroPur filter system is a fleece filter for cleaning the cooling lubricant (KSS) in machining processes.

Hydrostatic filter HydroPur

Simple, modular centrifugal separator for separating sedimenting solids from low-viscosity liquids (e.g. emulsions) without filter consumables. Filter performance up to 90 l/min per module.

Hydrocyclone F60

Band filter in bevel design for cleaning of cooling lubricant with filter fleece. With simple vacuum technology. Filter performance up to 1,000 l/min per unit.

Hydrostatic filter HL

Compact band filter in trough design for cleaning of cooling lubricant with filter fleece. Filter performance up to 2,000 l/min per unit.

Compact filter KF

Compact band filter in trough design for cleaning of cooling lubricant with filter fleece. Filter performance up to 2,000 l/min per unit.

Compact filter KF-E

Superfine filter MicroPur®

Chip separators CS are devices for separating short chips, which the conveyor of a hinged or slat conveyor cannot hold back.

Chip separator CS

Simple band filter in flat-bed design for cleaning of cooling lubricant with filter fleece. Filter performance up to 1,000 l/min per unit.

Gravity belt filter PF

Modular backflush filter for treatment of cooling lubricants without filter consumables, usually in combination with a sludge conveyor. Filter performance up to 250 l/min per unit.

Reversible flow filter TURBO

Vacuum filter VL

High performance band filter for cleaning of cooling lubricant without filter consumables, for example profile grinding with processing oil. Filter performance up to 900 l/min per unit.

Vacuum filter VLO

Vacuum rotation filter VRF