IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0872149
(1978-01-25)
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우선권정보 |
SE-0008608 (1975-07-29) |
발명자
/ 주소 |
- Hellqvist Ake O. V. (130 40 Djurhamn SEX)
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인용정보 |
피인용 횟수 :
3 인용 특허 :
0 |
초록
▼
This invention is related to a sludge and slime separating and settling device which typically comprises a container with a bottom and a lower, truncated conical part, an upper, truncated conical part with a spillover overflow extending around the upper edge, and an intermediate cylindrical part. Th
This invention is related to a sludge and slime separating and settling device which typically comprises a container with a bottom and a lower, truncated conical part, an upper, truncated conical part with a spillover overflow extending around the upper edge, and an intermediate cylindrical part. The inlet is in the vertical direction in the middle of the container. The container is closed with a cover provided with an annular flow barrier wall extending from above the overflow level and dipping into the container.
대표청구항
▼
A domestic waste water and sewage sludge separating and settling device which comprises a container of essentially circular cross section over the main part of the vertical extension of the container, said container comprising a bottom wall, a lower, essentially frusto-conical, upwardly diverging pa
A domestic waste water and sewage sludge separating and settling device which comprises a container of essentially circular cross section over the main part of the vertical extension of the container, said container comprising a bottom wall, a lower, essentially frusto-conical, upwardly diverging part extending a distance H1 upwardly from said bottom wall and having a diameter D1 at its lower end, and essentially cylindrical intermediate part extending a distance H2 upwardly from said lower part and having a diameter D2 and an upper, esssentially frusto-conical, upwardly diverging part extending a distance H3 upwardly from said intermediate part and having a diameter D3 at its upper end, the ratios of the distances H1, H2 and H3 being H1 : H2 : H3 =1 to 2 : 0.5 to 1.5 : 1 to 2, and the ratios of the diameters D1, D2 and D3 being D1 : D2 : D3 =0.3 to 0.8 : 1 : 1.2 to 1.5, the upper end of the container being provided with a spillover overflow extending around the major part of its periphery, and the device also comprising means defining a vertically directed liquid inlet opening arranged essentially in the middle of a horizontal cross section through the device and at a vertical distance H4 from said bottom wall which is from ⅓to �1, H2 and H3, said inlet opening directing the flow of water towards the bottom of the device, a cover which encloses the upper end of said container and an annular weir extending from above the overflow level to below said level, the vertical projection of said weir falling within the limits of the vertical projection of the upper conical part of the container. A method of purifying a flow of domestic waste water, comprising passing said flow into a chamber of essentially circular horizontal cross section over the main part of the vertical extension of the chamber, said chamber being bounded by a bottom wall, a lower, essentially frusto-conical, upwardly diverging part extending a distance H1 upwardly from said bottom wall and having a diameter D1 at its lower end, an essentially cylindrical intermediate part extending a distance H2 upwardly from said lower part and having a diameter D2 and an upper, esentially frusto-conical, upwardly diverging part extending a distance H3 upwardly from said intermediate part and having a diameter D3 at its upper end, the ratios of the distances H1, H2 and H3 being H1:H2:H3 =1 to 2; 0.5 to 1.5:1 to 2, the ratios of the diameter D1, D2 and D3 being D1:D2:D3 =0.3 to 0.8:1:1.2 to 1.5, the slope angle of the wall of at least one of said lower and upper conical parts amounting to from 50°to 80°, said flow being passed vertically downwards into said chamber through a liquid inlet opening arranged essentially in the middle of a horizontal cross section of the chamber at a vertical distance H4 from the bottom wall of the chamber where H4 is from ⅓to ⅔of the sum of the distances H1, H2 and H3, and further comprising allowing liquid to leave the chamber by way only of the upper end of the upper part of the chamber, and causing liquid in the central region of the horizontal cross section of the chamber at the level of the upper end of the upper part of the chamber to flow downwardly, beneath an annular weir which projects downwards into the chamber to a height between H1 +H2 and H1 +H2 +H3 from the bottom wall of the chamber, in order to leave the chamber.
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