Linear peristaltic pump

A linear peristaltic pump apparatus for pumping liquids comprising:

• a pump housing (22);
• a high durometer compressible elastomeric liquid flow tube (12) carried by the housing (22);
• at least three discrete extensible and retractable actuating assemblies carried by the housing, including one occlusive infeed valve actuator assembly (26), one or more displacement actuator assemblies (36), and one occlusive outfeed valve actuator assembly (38), each actuating assembly including a movable actuator anvil (34) having a round surface which engages the flow tube (12) at all times;
• spaced apart top anvils (24.1), each mounted in a location directly opposite from the corresponding actuator anvil (34) and having a round surface in engagement with the flow tube at all times, the flow tube being held between the movable actuator anvils and the top anvils in a slightly compressed state when the actuating assemblies are retracted;
• and
• control means (100) for sequentially extending and retracting the actuating assemblies (26, 36, 38) to cause flow within the flow tube (12) from a location adjacent the infeed valve actuator assembly (26) to a location adjacent the outfeed valve actuator assembly (38),
• whereby the apparatus can pump highly particulated or non-homogeneous liquids and slurries effectively because of the dual symmetrical anvil design which serves to provide an efficient mechanism to move solids sway from the occlusion contact areas of the pump elements such that large solids are not trapped at the occlusion points of the pump elements and the large inclusions pass through the pump essential undamaged.

A linear peristaltic pump apparatus for pumping liquids comprising:

• a rigid generally channel shaped pump housing (22);
• a high durometer compressible elastomeric liquid flow tube (12) mounted within the channel shaped pump housing (22);
• at least three discrete extensible and retractable actuating assemblies carried by the housing, including one occlusive infeed valve actuator assembly (26), one or more displacement actuator assemblies (36), and one occlusive outfeed valve actuator assembly (38), each actuating assembly including a linear actuator and a movable actuator anvil (34) having a round surface which engages the flow tube (12);
• a cover plate (24) provided with spaced apart round shaped top anvils (24.1) such that when assembled to the housing (22) each top anvil (24.1) is in a location directly opposite from a corresponding actuator anvil (34);
• cover plate mounting means (50) for assembling the cover plate (24) to the housing (22) with the top anvils (24.1) bearing against the flow tube (12) in such a manner that the flow tube is slightly compressed;
• and
• control means (100) for sequentially extending and retracting the actuating assemblies (26, 36, 38) in such a manner as to cause flow within the flow tube (12) from a location adjacent the infeed valve actuator assembly (26) to a location adjacent the outfeed valve actuator assembly (38).