Patent SG-11201810103X-A (SG)
Title: Pump for pumping liquid as well as impeller assembly
Inventor: BERGH STEFAN
IPC: F04D13/08
Filed: 2017-05-10
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 11111111111111111111101011111111111 011101111111111111001101111111101111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date . . .., . ... WO 2017/198509 Al 23 November 2017 (23.11.2017) WIPO I PCT (51) International Patent Classification: (72) Inventor: BERGH, Stefan; Norra Lindasgatan 3, 361 42 F04D 7/04 (2006.01) F04D 29/042 (2006.01) LINDAS (SE). F04D 13/08 (2006.01) F16D 1/097(2006.01) (74) Agent: BRANN AB; P.O. Box 3690, 103 59 STOCK- F04D 15/00 (2006.01) HOLM (SE). (21) International Application Number: PCT/EP2017/061137 (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (22) International Filing Date: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 10 May 2017 (10.05.2017) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (25) Filing Language: English HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, (26) Publication Language: English KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, (30) Priority Data: MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 16169846.9 17 May 2016 (17.05.2016) EP PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, (71) Applicant: XYLEM IP MANAGEMENT S.A R.L. TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. [LU/LU]; 11, Breedewues, 1259 SENNINGERBERG (84) Designated States (unless otherwise indicated, for every (LU). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (54) Title: PUMP = = = FOR PUMPING LIQUID AS WELL AS IMPELLER 4 18 20 ASSEMBLY ( 1 14 -..... 22 19 17 2 = = V -41.,411r A N — = 24 30 t o . . • • = A I L _ = = 4 - 1 • < L 1 \\,___,. 6 21 = . \> 32 . = 1 = 13 = Fig. 2 = (57) : In a fist aspect the invention relates to a pump for pumping a liquid, comprising an impeller (4) and an axially extending _ drive shaft assembly (5), wherein a distal end of the drive shaft assembly (5) is received in a central recess (8) of the impeller (4), the drive shaft assembly (5) comprising a drive shaft (14) and a connector (15), wherein the connector (15) comprises a sleeve (16) It that is in telescopic engagement with the drive shaft (14), the impeller (4) during operation of the pump (1) being displaceable in the \" I IC axial direction in relation to said sleeve (16) between a distal rest position and a proximal position. The pump is characterized in that 01 the impeller (4) is biased towards the distal rest position by means of a spring member (25) arranged between the sleeve (16) and the © impeller (4), the connector (15) comprising a hollow adjustment screw (31) that is in threaded engagement with an interior side of kr) pc the sleeve (16) and configured to limit the maximum degree of telescopic overlap between the sleeve (16) and the drive shaft (14), 01 wherein an impeller screw (33) extends through the adjustment screw (31) and is in threaded engagement with the drive shaft (14) 7 . 1 in order to press the adjustment screw (31) towards the drive shaft (14). In a second aspect the invention also relates to an impeller IN assembly for such a pump. 1-1 0 ei C [Continued on next page] WO 2017/198509 Al MIDEDIMOMOIDEIRMEMOMOHHHINIEHOMEMOIMIE UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3))