• 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:
    Decanting centrifuge with an inner drum and an outer drum coaxial with the inner drum, each having a helical scraper rotating with a number of revolutions slightly differing from that of the drums, in which sewage sludge to be dewatered is fed to the inner drum and therefrom after initial separation through common passages is transported to the outer drum, in which separated sludge by means of the helical scraper is transported to a discharge at one end and liquid is removed through reject outlets at the other.
    公开号:SU927102A3
    申请号:SU762347404
    申请日:1976-04-21
    公开日:1982-05-07
    发明作者:Стен Бюе-Иергенсен Иерген；Вальдемар Хартвиг Ларсен Гуннар；Хенрик Вермехрен Поуль
    申请人:И.Крюгер А/С (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to equipment for the separation of heterogeneous liquid systems using centrifugal forces, in particular to a centrifuge, and can be used in food, chemical and other sectors of the national economy.
    A known centrifuge for dewatering sewage sludge, including a cylindrical conical rotor, a drum coaxially housed inside it, serving to pre-dewater the incoming sediment, screw conveyors, feeding pipe for the sump and a window for draining the separated liquid and dehydrated sludge located at opposite ends of the rotor 1.
    However, in the known centrifuge, the quality of the separated fractions is not high due to the occurrence of vortex flows in the rotor — I separated from sludge, grinding and secondary suspension of particles, and low productivity.
    The aim of the invention is to increase productivity and improve the quality of the separated fractions.
    This goal is achieved by the fact that in a centrifuge, including a cylindro-conical rotor, placed
    10 inside it is a coaxial drum that serves to pre-dehydrate incoming sludge, screw conveyors, feed pipe for sludge, windows for draining the separated liquid and dehydrated sludge located at opposite ends of the rotor, the drum has end partitions separating its inner space from the inner
    权利要求:
    Claims (3)
    [1]
    20 space of the rotor, a window for drainage of pre-dried sludge and separated liquid on the site, located opposite to the loading zone. 39 At the same time, the drum can be placed in the rotor. So that the windows for unloading the previously dehydrated sludge and separated liquid are located in the middle part of the rotor. In addition, a shell is installed in the cylindrical part of the rotor, between which a drum channel is formed from the middle of the rotor to the unloading zone of the latter, with the turns of the screw conveyor of the cylindrical part of the rotor fixed on the outer surface of the shell. FIG. 1 is a schematic representation of a centrifuge for dewatering sewage sludge, longitudinal section; FIG. 2 - the same, with windows for unloading of previously dehydrated sludge and separated liquid, located in the middle part of the rotor, a longitudinal section. The centrifuge (Fig. 1) includes a shaft 1, a cylindrical conical rotor 2, placed inside the coaxial drum 3 for pre-dewatering incoming sediment screw conveyors and 5 supply pipe 6 for suction, windows 7 and 8 for draining separated liquid and dehydrated sludge. Windows 7 and 8 are located at opposite ends of the rotor 2. The drum 3 has end partitions 9 separating its internal space from the internal space of the rotor 2, and windows 10 for draining the previously dehydrated sludge and separated liquid in the area opposite to the loading zone. The feed tube 6 is placed in the hollow shaft 1 1 of the drum 3 while the hollow shaft 11 serves to feed the sludge into the centrifuge, and the feed tube 6 serves to feed the various chemicals to the centrifuge to improve the separation process. A shell 12 is installed in the cylindrical part of the rotor 2, between which and the drum 3 forms a fluid channel 13 from the middle of the rotor 2 to the discharge zone of the latter. The turns of the screw conveyor k in the cylindrical part of the rotor 2 are mounted on the outer surface of the shell 12. The centrifuge operates as follows. The sludge is fed to the centrifuge through the hollow shaft 11. The dehydrated sludge continuously moves to the windows 8 to unload it, due to the difference between 4 speeds of rotation of the drum 3 and the screw conveyor 4 and the rotor 2 and the screw conveyor 5 provided with a planetary gear, gear or belt drive gears with different sized pulleys (not shown). In drum 3, the sludge is subjected to centrifugal force, at which turbulence is not high in the liquid. From the drum 3, the separated sludge and liquid through the windows 10 enter the rotor 2, in which the sludge is further compacted due to the effect of a greater magnitude of centrifugal force on it. The liquid separated from the sludge flows from the rotor 2 through the edge of the screw conveyor Ik into the channel 13, from which it enters the chamber 15 and from the latter flows out through the windows 7. In another embodiment of the centrifuge of FIG. 2), the drum 3 is placed in the rotor 2 in this way that the windows 10 for discharging the pre-dewatered sludge and separated liquid are located in the middle part of the rotor 2. In the centrifuge (FIG. 2), the withdrawal of the purified liquid is carried out directly through the windows 7. Used in the proposed centrifuge is a two-stage separation Sewage sludge Qi allows improving the quality of separation and increasing the productivity per unit volume of the centrifuging chamber. The proposed centrifuge also provides a high degree of purification with a relatively short length of the centrifuge and the distance between its main bearings, which makes it possible to reduce the cost of manufacturing the centrifuge. Claim 1, A centrifuge for dewatering sewage sludge, including a cylindrical rotor, a drum coaxially placed inside it, used for preliminary dehydration of incoming sludge, screw conveyors, feed pipe for sludge, window for draining separated liquid and dehydrated sludge, located at opposite ends of the rotor , characterized in that, in order to increase the productivity and improve the quality of the separated fractions, the drum has end partitions separating its internal its inner space from the rotor space, windows for discharging pre-dewatered sludge and liquid separated at a portion located opposite to the loading zone,
    [2]
    2. The centrifuge according to claim 1, about tl and so that the drum is placed in the rotor so that the window for unloading pre-dehydrated sludge and separated liquid are located in the middle part of the rotor. 5 10 15
    [3]
    3. The centrifuge according to claim 1, about t l and duct with the fact that a shell is installed in the cylindrical part of the rotor, between which and the drum a channel is formed for the liquid from the middle of the rotor to the unloading zone of the latter, while the turns of the screw conveyor in the cylindrical part of the rotor are reinforced on the outer surface of the shell. Sources of information, rintye taken into account during the examination 1. Patent of England No. 1357775, cl. 8 2 Р, publ. 197 "SPROTOTYPE".
    类似技术:
    公开号 | 公开日 | 专利标题
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    US4381849A|1983-05-03|Solids-liquid slurry separating centrifuge
    JP3032283B2|2000-04-10|Decanter centrifuge
    KR100953671B1|2010-04-20|The separating screw decanter centrifuges having helical designed outlet for discharging concentrated liquid or cake
    CN101327466A|2008-12-24|Helical-conveyer centrifugal
    SU927102A3|1982-05-07|Centrifuge for dehydrating precipitate of effluents
    US3200068A|1965-08-10|Recovering fines in a mechanical dehydrator
    US6004255A|1999-12-21|Decanter centrifuge
    GB899310A|1962-06-20|Solid-bowl centrifuge with discharge screw
    KR200384169Y1|2005-05-11|Decanter centrifugal separator including a screw for water distribution
    US2905379A|1959-09-22|Solid jacket centrifugal separator
    US5586966A|1996-12-24|Apparatus and method for separating solid/fluid mixtures
    RU2185892C2|2002-07-27|Suspension separating centrifuge
    SU787091A1|1980-12-15|Sedimentation centrifugal apparatus
    CN201257404Y|2009-06-17|Helical conveyer centrifugal
    SU724212A2|1980-03-30|Settling centrifuge
    US3658182A|1972-04-25|Sludge centrifuge
    SU1007739A1|1983-03-30|Settling centrifugal machine
    SU1174088A1|1985-08-23|Sedimentation scroll-discharge centrifuge
    CN216005601U|2022-03-11|High-efficient type environmental protection centrifugal dehydrator for engineering
    SU923627A1|1982-04-30|Cetrifugal machine for filtering suspensions through subsidery substance layer
    US3409215A|1968-11-05|Continuous centrifuge
    SU1465122A2|1989-03-15|Sedimetation centrifuge
    CN114146825A|2022-03-08|Device for quickly dewatering and conveying sediments
    SU1168293A1|1985-07-23|Filtering centrifuge
    同族专利:
    公开号 | 公开日
    AU499119B2|1979-04-05|
    IT1059475B|1982-05-31|
    DE2617179A1|1976-11-04|
    NO761327L|1976-10-22|
    HU175774B|1980-10-28|
    CH603247A5|1978-08-15|
    FI65766C|1984-07-10|
    DE2617179C2|1987-01-02|
    DK143797B|1981-10-12|
    US4085887A|1978-04-25|
    AU1308876A|1977-10-20|
    NL7604135A|1976-10-25|
    SE423185B|1982-04-26|
    ES447162A1|1977-06-16|
    JPS5939192B2|1984-09-21|
    NO141041B|1979-09-24|
    FR2308414A1|1976-11-19|
    FI65766B|1984-03-30|
    FR2308414B1|1979-06-01|
    ATA291076A|1978-07-15|
    JPS51128841A|1976-11-10|
    AT348957B|1979-03-12|
    DK143797C|1982-04-26|
    SE7604441L|1976-10-22|
    CA1049472A|1979-02-27|
    GB1546900A|1979-05-31|
    DK170275A|1976-10-22|
    FI761082A|1976-10-22|
    NO141041C|1980-01-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2649448C1|2017-01-17|2018-04-03|Георгий Петрович Трошин|Precipitating centrifuge|US1064184A|1911-09-16|1913-06-10|Paul Oscar Wels|Centrifugal concentrator.|
    US1806241A|1929-03-09|1931-05-19|Dupuis Fernand|Centrifugal separator|
    NL57749C|1941-08-14|1900-01-01|
    GB726596A|1952-05-14|1955-03-23|Separator Ab|Improvements in or relating to centrifuges for separating, sludge containing liquids|
    DE1027140B|1954-05-28|1958-03-27|Trenntechnik G M B H|Continuously working solid bowl centrifuge|
    DE1082192B|1958-10-30|1960-05-19|Krauss Maffei Ag|Screw centrifuge for clearing liquids from slurries|
    US3782623A|1970-06-11|1974-01-01|Krueger As I|Decanting centrifuge for draining off water from sewage sludge|
    DE2130633C3|1971-06-21|1982-09-23|Flottweg-Werk Dr. Georg Bruckmayer GmbH & Co. KG, 8313 Vilsbiburg|Solid bowl screw centrifuge|
    DE2154535A1|1971-11-03|1973-05-10|Georg Hiller|Solid jacket worm centrifuge - with double worms in coaxial configuration|HU187708B|1982-05-19|1986-02-28|Budapesti Vegyipari Gepgyar|Settling centrifuge|
    US5107599A|1990-08-28|1992-04-28|General Motors Corporation|Universal fixture for coordinate measuring machines|
    KR950704199A|1992-11-06|1995-11-17|미카엘 크니히트|How to biologically remove phosphorus from wastewater|
    DE59601456D1|1995-01-30|1999-04-22|Vit Robert Dipl Ing|Thickening centrifuge for thickening excess sludge|
    DE202014004097U1|2014-05-19|2015-08-24|Accon Gmbh|Device for generating force impulses|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DK170275A|DK143797C|1975-04-21|1975-04-21|DECENTER Centrifuge for Drainage of Sludge|
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