16-01-2020 дата публикации
Номер: US20200018315A1
Принадлежит:
A centrifugal pump for lifting clean water or water with suspended solids includes a hollow body having a front opening, a volute with a delivery port, and an impeller accommodated in the body and designed to be coupled to a motor, with blades tips substantially coplanar at an annular peripheral area. A cover of the front opening includes a flange, an annular wear plate, rigidly joined to the flange and located at a predetermined axial distance from an annular peripheral area of the impeller, and an adjustment system, mounted onto the flange and accessible from the outside, to controllably adjust the axial distance of the wear plate, and to both calibrate the axial position of the wear plate and lock the wear plate in the calibrated position. A method of adjusting the axial distance of the wear plate from an impeller in a centrifugal pump is also disclosed. 11. A centrifugal pump () for lifting clean water or water with suspended solids , comprising:{'b': 2', '2', '3', '4', '5, 'a hollow body () defining a center axis (L), said hollow body () having a front opening () and a volute () with a radial delivery port ();'}{'b': 8', '2', '8', '9', '10', '11, 'an impeller () accommodated in said hollow body () and designed to be coupled to a motor, said impeller () having blades () whose tips () are substantially coplanar at an annular peripheral area ();'}{'b': 12', '3', '12', '13', '14', '15', '16, 'a cover () for closing said front opening (), said cover () comprising a flange () with a central portion () which has a substantially axial suction port (), and a substantially radial peripheral portion ();'}{'b': 19', '13', '11', '8, 'sub': '1', 'a substantially annular wear plate (), integral with said flange () and located at a predetermined axial distance (d) from said annular peripheral area () of said impeller (); and'}{'b': 24', '19, 'sub': '1', 'an adjustment system () for controlled adjustment of said axial distance (d) of said wear plate ();'}{'b': 24', '13', '24', ...
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