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특허 상세정보

Two stage medium consistency pulp pumping

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F04D-001/10   
미국특허분류(USC) 415/143 ; 415/1996
출원번호 US-0735350 (1985-05-17)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 15  인용 특허 : 9
초록

A centrifugal pump for pumping suspensions having a consistency of about 6-20% (for example, for pumping paper pulp) has a second stage for increasing head. An auxiliary impeller is connected to the drive shaft in front of the main impeller, and upon rotation of the drive shaft directs the suspension being pumped axially into association with the main impeller. Mounted between the pump inlet and the auxiliary impeller are a plurality of stationary guide vanes, and mounted on the opposite side of the guide vanes from the auxiliary impeller are a plurality...

대표
청구항

A method of pumping a suspension having a consistency between about 6-20%, comprising the step of continuously acting upon a suspension to progressively (a) effect initial fluidization of the suspension; (b) effect removal of extreme pre-rotation of the fluidized suspension, and define a definite directional flow angle of the suspension; (c) effect a first fluidizing pumping of the suspension, in a first stage, to pump the suspension directly to a second stage; and (d) effect a second fluidizing centrifugal pumping of the suspension in the second stage. ...

이 특허를 인용한 특허 피인용횟수: 15

  1. Niskanen Toivo (Hamina FIX). Apparatus for pumping high consistency fiber suspension. USP1991035000658.
  2. Burgess, Kevin Edward; Liu, Wen-Jie; Lavagna, Luis Moscoso. Centrifugal pump impellers. USP2015049004869.
  3. Miller Patrick C. (Phoenix AZ). Centrifugal pump with splitter vane/shut-off valve system. USP1989074850796.
  4. Imai Masayuki,JPX ; Endo Takashi,JPX ; Ninomiya Tatsushi,JPX. Drainage pump with noise and vibration reducing features. USP1999105961283.
  5. Gullichsen Johan (Sjundea FIX). Medium consistency pump with self-feeding. USP1989054826398.
  6. Gullichsen Johan (Siuntion vanha pappila 02570 Siuntio FIX). Method and apparatus for pumping fiber suspensions. USP1988104780053.
  7. Gullichsen Johan (Siuntio FIX). Method and apparatus for pumping fibre suspensions. USP1989084854819.
  8. Niskanen Toivo,FIX ; Peltonen Kari,FIX. Method and apparatus for separating gas from a gaseous material. USP2000066071331.
  9. Nikpour, Bahram. Multistage compressor with improved map width performance. USP2013048414249.
  10. Nikpour, Bahram. Multistage compressor with improved map width performance. USP2014048690522.
  11. Nikpour, Bahram. Multistage compressor with improved map width performance. USP2014098845268.
  12. Franz Petschaurer AT; Reinhard Pinter AT; Adolf Engler AT. Process and device for distributing a pulp suspension, particularly at medium consistency. USP2002106461479.
  13. Walker, Craig Ian. Pump intake device. USP2016089422829.
  14. Richter Johan C. F. C. (Oslo NOX) Richter Ole J. (Karlstad SEX). Pump with separate fluidizing vaned shaft adjacent impeller. USP1990124976586.
  15. Burgess, Kevin Edward; Liu, Wen-Jie; Lavagna, Luis Moscoso. Relating to centrifugal pump impellers. USP2016089422938.