德国BOLL & KIRCH Filterbau GmbH过滤器 滤芯

In all BOLL automatic filters, sieve candles or sieve cylinders are cleaned automatically by backflushing without interrupting operation. This can be actuated either by differential pressure or is time controlled, and uses an internal medium, internal medium with compressed air support or an external medium.
Automatic filters are used for applications with continuous contamination and for which manual cleaning is uneconomical, or if the plant is largely automated.

Duplex filters comprise two filter housings. One half of the filter is in operation whilst the other clean half is on stand-by.

When the contamination exceeds a preset tolerance level, the flow can be switched to the cleaned half of the filter without any pressure shock. The contaminated filter element is cleaned whilst the plant continues to run. Switch-over is performed by a cylindrical cock valve or double stage three-way ball valves. The design prevents both filter chambers from being shut off at the same time.

Simplex filters are the basic model of filter technology. They perform filtration tasks just as reliably as duplex filters with dual chambers or automatic filters.
All filter element designs with different filter materials can be installed. BOLL simplex filters are used everywhere where the plant or the filter with shut-off device can be shut down in order to clean or replace the filter elements.

Differential Pressure Indicator
BOLL Differential Pressure Indicators are sturdy and compact devices to be mounted on the filter indicating the degree of contamination of the filter element.

Cleaning Devices
To efficiently regenerate filter elements that have become engrained with contaminants and secure full functionality, it is recommended to clean the filter mesh from time to time. Optimum results are achieved by using the BOLL cleaning units in combination with the special cleaning fluid BOLL-CLEAN 2000.