Ultrafiltration flow monitoring device for blood purification

The utility model relates to the technical field of blood purification, and discloses an ultrafiltration flow monitoring device for blood purification, which comprises an equipment body shell, the inner wall of the equipment body shell is provided with two wall grooves, the interiors of the two wall grooves are respectively connected with an extension rod in a sliding manner, and the other side of each extension rod is fixedly provided with an arc-shaped fitting plate. According to the ultrafiltration flow monitoring device for blood purification, the overall flow change is obtained through the position change of a scale groove formed in the surface of an auxiliary scale rod of a connecting sleeve, and meanwhile, an auxiliary sliding plate fixedly connected with the connecting sleeve preliminarily slides in a fixed sleeve shell; a ball in the auxiliary sliding plate is attached to the inner wall of the fixed sleeve shell to perform auxiliary sliding, so that the sliding friction force is reduced, the unbalanc