• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The disclosure describes a method and a device for pumping fiber suspensions of high consistency. Shear forces disrupting fiber flocs are induced near the front edge of the vanes of the impeller in a centrifugal pump which fluidize the fiber suspension hereby converting it into an easily pumpable state. This is effected by an inlet part having recesses and/or lobes in its inner surface in front of the impeller which cooperate with a rotor having an outer surface in which there are recesses and/or lobes disposed into the inlet part.
    公开号:SU1421263A3
    申请号:SU782618500
    申请日:1978-05-15
    公开日:1988-08-30
    发明作者:Нисканен Тойво；Сундман Фрей；Туомаала Йорма；Гулликсен Йохан
    申请人:Камюр Аб (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to devices for pumping slurries in fibrous materials and is intended for centrifugal slurries used in paper and cellulose washes for pumping slurry of fibrous materials or fibrous masses of high consistency.
    The aim of the invention is to increase the pumping efficiency by destroying the fibrous structure using tangential forces.
    Fig. 1 shows a pump for pumping fiber suspensions, a vertical sectional view in Fig. 2, a section A-A in Fig. 1 {in Fig. 3, an embodiment of the pump} in Fig. 4, section B-B in Fig. 3.
    The pump for pumping fiber-TbDt suspensions includes a housing 1 in which the impeller 2 with blades 3 is located. The impeller is rotatably fixed on the shaft 4.-
    An outlet (not shown) is formed in the housing 1. Inlet duct 5
    located coaxially with the impeller 2
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    On the shaft 4, a yank-mounted rotor 6, placed in the intake duct 5 in front of the impeller 2. The cylindrical surface 7 of the inlet duct 5 is provided with protrusions 8 and recesses 9.
    The periphery 10 of the rotor 6 along its entire axial length is provided with protrusions 11 and recesses 12. The notches 9 and 12 are provided with axially opposing open ends.
    The pump inlet 5 is connected to the outlet window of the cooking autoclave 13 with a pulp (Fig. 1)
    In the embodiment shown in FIGS. 3 and 4, the protrusions and depressions of the rotor 6 and the inlet channel 5 are formed by the non-circular cross-sectional shape of the rotor 6 and the non-circular cross-section corresponding to it by the inlet channel 5.
    The pump works as follows.
    Coming from the autoclave 13 suspension of fibrous materials pop,.
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    gives into the intake port 5 and the rotor 6 is driven into rotational motion.
    The protrusions a and 11 and recesses 9 and 12 on the surface of the inlet duct 5 and the periphery 10 of the rotor 6 are provided with a cross-section of a variable profile. Due to this, the suspension of fibrous materials in the inlet channel 5, with the alternate increase and decrease of its cross section in the direction of rotation, is exposed to tangential forces that break the bond between the fibers. Thus, the suspension of fibrous materials becomes fluidized immediately in front of the impeller 2 and flows freely to the channels of the blades 3.
    Tests have shown that the proposed pump is well adapted for pumping various fibrous masses used in paper and cellulose industry and having a consistency from 8 to 12%. You can also pump the fibrous masses of higher consistencies. With a consistency of less than 6%, the pump operates at an inlet pressure of 2–3 m water column, which is lower than the pressure at the inlet of conventional pumps for pumping about
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A pump for pumping fiber suspensions, comprising a housing, an impeller with blades, an exhaust channel located in the housing, an inlet channel and an icoocHo with an impeller rotor mounted on the impeller shaft and located in front of the impeller in the inlet channel, characterized in that in order to improve pumping efficiency by destroying the fibrous structure with the help of tangential forces, the periphery of the rotor along its entire axial length is provided with protrusions and recesses between them, all of which are provided with axially opposite open ends.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1421263A3|1988-08-30|Pump for pumping fibrous suspensions
    EP0368530B1|1993-07-14|Fluidizing centrifugal pump or impeller for such a pump
    SE8501030D0|1985-03-04|A screening device
    CA2013132A1|1990-10-27|Pump for and method of separating gas from a fluid to be pumped
    US5078573A|1992-01-07|Liquid ring pump having tapered blades and housing
    CA1128368A|1982-07-27|Method and apparatus for pumping fibre suspensions
    US3013501A|1961-12-19|Centrifugal impeller
    FI77481C|1989-03-10|Strainer.
    US5413460A|1995-05-09|Centrifugal pump for pumping fiber suspensions
    GB1412488A|1975-11-05|Pump for pumping liquids containing ce-lulose or other fibre suspensions
    CN211713509U|2020-10-20|Pumping screen and pumping screening system
    CA1180686A|1985-01-08|Paper making stock screening apparatus incorporatingcircular apertured cylindrical pressure screen
    US5476178A|1995-12-19|Rotor for pressurized hydrodynamic purification of paper pulp and equipment fitted with this rotor
    CA1062544A|1979-09-18|Turbine engine and pump
    US2680409A|1954-06-08|Centrifugal pump
    SU985435A1|1982-12-30|Centrifugal pump for pumping fibrous hydraulic mixtures
    SU808694A1|1981-02-28|Centrifugal pump
    SU1368502A1|1988-01-23|Axial fan inlet device
    SU558083A1|1977-05-15|Device for dewatering pulp
    SU1498951A1|1989-08-07|Rotor machine
    SU1402716A1|1988-06-15|Liquid-packed ring machine
    KR0150406B1|1998-11-02|Impeller for a pump
    SU1055542A1|1983-11-23|Impeller unit of flotation machine
    FI66037B|1984-04-30|ANORDNING FOER SIKTNING AV FIBROES SLAM
    FI81891C|1990-12-10|MASSPUMP ELLER -PRESS.
    同族专利:
    公开号 | 公开日
    FI771541A|1978-11-17|
    ZA782727B|1979-05-30|
    FI62871B|1982-11-30|
    US4435122A|1984-03-06|
    JPS62282091A|1987-12-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT176507B|1951-10-23|1953-10-26|Josef Romann|Blower for hay, straw, etc. like|
    DE1211905B|1964-02-26|1966-03-03|Draiswerke Ges Mit Beschraenkt|Agitator mill for the production of solid dispersions|
    CH417340A|1964-07-14|1966-07-15|Emile Egger & Cie S A|Multipurpose pump unit|
    JPS4936041A|1972-08-08|1974-04-03|
    US3973866A|1975-01-02|1976-08-10|Vaughan Co., Inc.|Centrifugal chopping slurry pump|
    FI82728C|1977-05-16|1991-04-10|Ahlstroem Oy|Device for pumping a fiber suspension|US4780053A|1978-04-10|1988-10-25|Johan Gullichsen|Method and apparatus for pumping fiber suspensions|
    FI67580C|1983-07-12|1985-04-10|Ahlstroem Oy|FOERFARANDE OCH ANORDNING FOER FIBRERING SILNING OCH PUMPNING AV CELLULOSAMASSA OCH RETURPAPPER|
    FI76132C|1985-10-21|1988-09-09|Rauma Repola Oy|Process and apparatus for admixture of liquid or gas in cellulose mass|
    US4884943A|1987-06-25|1989-12-05|A. Ahlstrom Corporation|Method and apparatus for pumping high-consistency fiber suspension|
    FI81136C|1987-11-11|1990-09-10|Ahlstroem Oy|FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MASSA.|
    FI79361B|1988-01-05|1989-08-31|Ahlstroem Oy|FOERFARANDE OCH APPARATUR FOER UNDERLAETTANDE AV UTTOEMNING AV FALLROER ELLER LIKNANDE OCH BEHANDLING AV MASSA I SAGDA UTRYMME.|
    FI85751B|1988-06-17|1992-02-14|Ahlstroem Oy|FOERFARANDE OCH ANORDNING FOER PUMPNING AV TJOCKT MEDIUM.|
    US4877368A|1988-11-08|1989-10-31|A. Ahlstrom Corporation|Fluidizing centrifugal pump|
    US5413460A|1993-06-17|1995-05-09|Goulds Pumps, Incorporated|Centrifugal pump for pumping fiber suspensions|
    US5813758A|1993-12-10|1998-09-29|Ahlstrom Machinery Inc.|Concentric ring fluidizing mixer|
    DE20201092U1|2002-01-24|2003-03-06|Pfister Gmbh|Device for the continuous, gravimetric dosing and pneumatic conveying of bulk goods|
    EP3196469B1|2007-05-21|2021-04-07|Weir Minerals Australia Ltd|Pump assembly having a flow directing device with flow circulating passageways and delivery passageways|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI771541A|FI62871B|1977-05-16|1977-05-16|FOERFARANDE FOER PUMPNING AV EN FIBERSUSPENSION|LV920545A| LV5321A3|1977-05-16|1992-12-29|Rotator for slurry suspension|
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