| 摘要 |
PCT No. PCT/SE85/00145 Sec. 371 Date Nov. 13, 1985 Sec. 102(e) Date Nov. 13, 1985 PCT Filed Mar. 29, 1985 PCT Pub. No. WO85/04454 PCT Pub. Date Oct. 10, 1985.A device in a peristaltic pump of the type including at least one pressure body (8) driven along a circular path, there being disposed concentrically around at least the major portion of this path a support structure (9, 10) accommodating an elastic hose (11) which is subjected to a local compression against the support structure by means of the pressure body as this body moves along its circular path, and an annular member (12) placed between the pressure body (8) and the hose (11), with its inner circumference abutting against the pressure body and its outer circumference abutting against the hose, towards which the annular member is locally pressed by the pressure body. The primary characteristic feature of the inventive device is a non-return valve (15) acting adjacent the end of the hose (11) connected to the pressure outlet (16) of the pump, at least part of the outer circumference of the annular member (12) together with the pressure body (8) constituting the operating means for this valve. |
