METHOD FOR CONTROLLING THE CAPACITY OF A PERISTALTIC PUMP AND PERISTALTIC PUMP
First Claim
1. Method for controlling the flow rate in a peristaltic pump comprising occlusion means for compressing a flexible tube, creating at least one zone of occlusion moving cyclically from an upstream part to a downstream part of the pump, the occlusion means comprising mobile compression means that compress the tube toward a counter surface, the occlusion means being actuated by control means placed on a rotation shaft, characterized in that wherein the occlusion means in the furthest downstream part of the pump remain in the occlusive position for a greater portion of the cycle than the occlusion means in a further upstream part of the pump.
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Accused Products
Abstract
A method for controlling the flow rate of a peristaltic pump includes compressing a flexible tube, forming at least one occlusion region that moves cyclically downstream from the upstream end of the pump, and compressing the tube in the direction of a counter surface to form an occlusion. A peristaltic pump can be used to carry out the method so as to suppress reverse flow without altering the speed of the motor. The occlusion in the most downstream part of the pump remain in the occluding position for a longer portion of the cycle than occlusion in a more upstream part of the pump, preferably for longer than the compression in the most upstream part of the pump.
25 Citations
26 Claims
- 1. Method for controlling the flow rate in a peristaltic pump comprising occlusion means for compressing a flexible tube, creating at least one zone of occlusion moving cyclically from an upstream part to a downstream part of the pump, the occlusion means comprising mobile compression means that compress the tube toward a counter surface, the occlusion means being actuated by control means placed on a rotation shaft, characterized in that wherein the occlusion means in the furthest downstream part of the pump remain in the occlusive position for a greater portion of the cycle than the occlusion means in a further upstream part of the pump.
- 4. Peristaltic pump comprising occlusion means for compressing a flexible tube, creating at least one zone of occlusion able to move cyclically from an upstream part to a downstream part of the pump, the occlusion means comprising mobile compression means that compress the tube toward a counter surface, the occlusion means being actuated by control means placed on a rotation shaft, wherein the control means for the compression means are proportioned so as to keep said compression means in the occlusive position in the furthest downstream part of the pump for a greater portion of the cycle than a further upstream part of the pump.
Specification