초록 ▼

The invention relates to linear peristaltic pump of known contruction, in which a first cam (30a) and a first cam follower (11a) in the form of an input valve, at least three intermediate cams (30b-30e) and cam followers (11b-11e) for pumping operation and a last cam (30f) and a last cam follower (1

The invention relates to linear peristaltic pump of known contruction, in which a first cam (30a) and a first cam follower (11a) in the form of an input valve, at least three intermediate cams (30b-30e) and cam followers (11b-11e) for pumping operation and a last cam (30f) and a last cam follower (11f) in the form of an output valve are used.

대표청구항 ▼

[ I claim:] [1.] Linear peristaltic pump comprising:(a) a support plate:(b) a flexible tube supported on the support plate and having an input end connected to a fluid reservoir as well as an output end; and(c) Pumping operation device for squeezing the flexible tube in an operation sequence traveli

[ I claim:] [1.] Linear peristaltic pump comprising:(a) a support plate:(b) a flexible tube supported on the support plate and having an input end connected to a fluid reservoir as well as an output end; and(c) Pumping operation device for squeezing the flexible tube in an operation sequence traveling along the flexible tube from the input end to the output end, the pumping operation device comprising:(i) a motor-driven cam shaft having an axis and being rotatable supported in parallel to the flexible tube,(ii) an input valve for opening and closing the flexible tube at the input end, the input valve having a first cam on the cam shaft and a first cam follower mounted for reciprocating movement in a direction normal to the axis of the cam shaft and provided with an end face for squeezing the flexible tube,(iii) at least one intermediate cam angularly displaced on the cam shaft relative to the first cam and an intermediate cam follower for each intermediate cam, each intermediate cam follower being mounted for reciprocating movement in a direction normal to the axis of the cam shaft and having an end face for squeezing the flexible tube, the at least one intermediate cam and each cam follower mounted to perform a pumping operation, wherein each of the at least one intermediate cam has three curve portions, namely a first portion with a continuously increasing radius for a pressing phase, a second, circumferential portion with a constant radius equal to the radius at the end of the first portion for maintaining the flexible tube closed, and a third portion with a sharp decrease of the radius for quick release of the flexible tube, and(iv) an output valve for opening and closing the flexible tube at the output end, the output valve having a last cam angularly displaced on the cam shaft relative to the first cam and the at least one intermediate cam, the output valve also having a last cam follower mounted for reciprocating movement in a direction normal to the axis of the cam shaft and provided with an end face for squeezing the flexible tube.