Concord Screen Inc manufacurer of wedge wire screens laterals headers screen vee wire profile filters filter nozzles elements.

Model ACS Design, Features & Operation

Concord Model ACS strainers are offered in capacities to 100,000 gallons per minute. The strainers are offered for vertical installation and are available to 0.001" degree of cleaning using Concord's own "POSI-CLEAN" elements.

The Concord Screen Inc. Model ACS strainer is a fabricated single body vessel with a single straining element, designed as a fully automatic self-cleaning strainer. The vessel is available fabricated to ASME Code latest edition and addenda ("U" stamped) and National Board Registered, or built in gerneral accordance to ASME Code without code stamp or registration. In Canada, it is available also with "CRN" registration as required by province.

Inlet and outlet connections are on the sides. The debris laden fluid enters the large lower chamber where it slows down and contaminants settle to the bottom. The fluid flows upward into the straining basket. The fluid then passes through the "POSI-CLEAN" element and exits the strainer through the outlet nozzle. Contaminants gather on the inside of the basket in pockets created by the baskets vertical spacer rods.

The backwash arms provide a flow path for the debris collected and the fluid to dislodge the debris during the backwash cycle. The backwash arms direct the dirty fluid to an open pit or tank at atmospheric pressure outside of the strainer. The arms rotate slowly to allow wach section of the basket to be backewashed in turn. The backwash drive system converts the high rotational speed of the electiric motor to a straining basket. A shear pin protects the gear reducer, shafting and backwash arm from serious damage.

The ACS strainer can perform self-cleaning (backwashing) without interruption of flow. These strainers are designed primarily for water service where large quantities of debris must be removed.

The Concord Screen Inc. Model ACS Strainer users a motor driven backwash arm to clean the strainer basket. A hollow shaft with two diametrically opposite arms rotates inside the basket and in turn blocks off a section of the basket. The two arms are open to the basket and to the atmosphere through the hollow shaft and backwash piping. Reversal of flow causes the debris and other contaminants to flow out through the backwash arm and out through a control valve to the drain. The strainer can be set for continuous backwash or automatic intermittent backwash operation. The backwash arm is driven by a standard motor through a reduction gear. Access opening is provided for inspection and removal of large pieces of debris accumulated at the bottom of the strainer.