• 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:
    summary patent of invention: "centrifuge and discharge port member of a centrifuge for power reduction". the present invention relates to a rotating machine (1), especially a settling centrifuge, which comprises a bowl (2) rotating around a geometrical axis (5) to generate a cylindrical grouping of a feeding fluid paste, being that said basin (2) has a heavy phase discharge port (10); and a base plate (6) provided at a longitudinal end (8) of said bowl (2); at least one outlet opening (9) provided on said base plate (6); a liquid phase discharge port member (14, 22) placed over at least one outlet opening (9); characterized by the fact that said liquid phase discharge port member (14, 22) includes at least one straight open channel (17) with a longitudinal geometric axis (18); wherein the longitudinal geometric axis (18) of said channel (17) extends at an acute angle (?) in relation to said base plate (6) and said channel (17) has an extension in the direction of said longitudinal geometric axis (18). the invention also relates to a liquid phase discharge port member (14, 22) adapted to be placed over an outlet opening (9) of a rotating machine (1), especially a settling centrifuge.
    公开号:BR112014002159B1
    申请号:R112014002159-7
    申请日:2012-07-26
    公开日:2021-04-06
    发明作者:Laurentiu Pasol；Jean-Marc Huyghe
    申请人:Andritz S.A.S.；
    IPC主号:
    专利说明:

    [0001] [0001] The present invention relates to a rotating machine comprising a rotating basin around a geometrical axis to generate a cylindrical grouping of a fluid feed slurry, said basin having a heavy phase discharge port and a base plate provided at a longitudinal end of said bowl, at least one outlet opening provided in said base plate and a liquid phase discharge port member placed over at least one outlet opening. The invention also relates to a liquid phase discharge port member adapted to be placed over an outlet opening of a rotating machine.
    [0002] [0002] Such a rotating machine is known from US 7022061, which has a tubular outlet member with an elbow bend in the opposite direction to the turning of the pelvis. A similar rotary machine is described in US 2004/072668 and describes a casing provided with a nozzle on the casing side. Above the enclosure a dam can be provided. The discharge of liquid has an angle with the base plate. However, the nozzle in certain applications of such a machine tends to clog and, thus, the liquid will flow through overflow, which can increase the power consumption.
    [0003] [0003] Another rotating machine, especially a centrifugal separator, is described in WO 2008/138345. Here, a housing is also provided with a discharge opening at an angle to the base plate. The tank level is generated by a dam with an overflow edge. This dam operates similarly to the dams known, for example, from US 4575370, the only difference being that the flow is in a direction in which it cannot hang outside the base plate.
    [0004] [0004] The document separator mentioned above WO 2008/138345 seems to solve the problem of document US 4575370. However, there is an uncontrolled flow of the liquid in a radial direction and low acceleration of the liquid at the outlet, compared to the document US4575370.
    [0005] [0005] The present invention, therefore, aims to provide a rotary machine and a liquid phase discharge port member for such a rotary machine that eliminates or reduces the problems mentioned above and in which the power recovery is improved.
    [0006] [0006] The rotary machine comprises, according to the present invention, a rotating basin around a geometrical axis to generate a cylindrical grouping of a fluid feed slurry, said basin containing a heavy phase discharge port and a base plate provided at a longitudinal end of said bowl, at least one outlet opening provided in said base plate and a liquid phase discharge port member placed over at least one outlet opening.
    [0007] [0007] The invention is characterized by said liquid phase discharge port member and includes at least one straight open channel with a longitudinal geometric axis, wherein the longitudinal geometric axis of said channel extends at an acute angle with respect to said base plate and said channel have an extension in the direction of said longitudinal geometric axis. With this extension, the flow of the liquid is directed through the channel at an acute angle to the base plate in a more or less circumferential direction and the reaction forces can be used to rotate the basin, thus reducing energy consumption considerably.
    [0008] [0008] Since the length of said channel is between 0.1 and 5 times, advantageously, between 1 and 3 times the width of the same, the flow can be directed in the desired direction more safely.
    [0009] [0009] If an additional closed channel is disposed radially outwards with respect to said at least one channel having a longitudinal geometry axis disposed parallel to said longitudinal geometry axis of said at least one channel, there is an additional source of energy recovery.
    [0010] [00010] When the length of said closed channel is approximately equal to the length of said channel, the flow of both currents is in an approximately similar direction and, thus, do not disturb each other.
    [0011] [00011] If a nozzle member is placed at the end of said closed channel, the flow can be even better directed in one direction and, due to the high speed of the flow, an even greater energy recovery is possible. In case the nozzle is clogged, the liquid will discharge through the open channel with low increase in power consumption.
    [0012] [00012] An additional improvement is given when said nozzle member is adjustable and / or replaceable. Thus, the liquid flow can be adjusted to the desired production.
    [0013] [00013] Furthermore, if cracks or other mechanical solutions are provided in said liquid phase discharge port member to adjust said liquid phase discharge port member in a radial direction, the level in the basin can be easily modified.
    [0014] [00014] A further object of the invention is to provide a liquid phase discharge port member adapted to be placed over an outlet opening of a rotating machine. The liquid phase discharge port member according to the invention comprises a flange, an inlet opening provided in said flange. The invention is characterized by said liquid-phase discharge port member and includes a straight open channel with a longitudinal geometric axis, wherein the longitudinal geometric axis of said channel extends at an acute angle with respect to said flange and said channel has an extension in the direction of said longitudinal geometric axis. With this extension, the flow of the liquid is directed through the channel at an acute angle to the base plate in a more or less circumferential direction and the reaction forces can be used to rotate the basin, thus considerably reducing the energy consumption of a rotating machine, for example, centrifugal.
    [0015] [00015] Preferably, said liquid phase discharge port member has a length of said channel that is equal to or greater than the width, so that the flow can be directed in the desired direction more safely.
    [0016] [00016] If said member of the liquid phase discharge port has an additional tubular opening disposed below a bottom of said channel and contains a longitudinal geometry axis disposed parallel to said longitudinal geometry axis of said channel, there is a second source of recovery power.
    [0017] [00017] It is advantageous when the length of said tubular opening is approximately equal to the length of said channel, so the flow of both currents is approximately in a similar direction and, thus, do not disturb each other.
    [0018] [00018] A further improvement is characterized by a nozzle member which is placed at the end of said tubular opening, wherein said nozzle member can be adjustable and / or replaceable. If a nozzle member is placed at the end of said tubular opening, the flow may even be better directed in a desired direction and, due to the high speed of the flow, an even higher energy recovery is possible and by the adjustable nozzle member and / or replaceable the flow of liquid can be easily adjusted to the desired production of the rotary machine, for example, centrifugal.
    [0019] [00019] If the liquid phase discharge door member according to the invention has slots to adjust said liquid phase discharge door member in relation to said outlet opening of said rotating machine, the level in said bowl rotary machine, for example, centrifugal, can be easily modified.
    [0020] [00020] The invention will now be described in greater detail based on the exemplary, but not limiting, modalities, with reference to the drawings. In the drawings: Fig. 1 shows a schematic view of a rotating machine, for example, a decanter centrifuge, of prior art; Fig. 2a shows a section of the base plate at the end of a rotating machine, equipped with liquid phase discharge members of an embodiment according to the invention; Fig. 2b shows a top view in Fig. 2a; Fig. 3 shows a view of a liquid phase discharge member of an embodiment according to the invention; Fig. 4a shows a top view of liquid phase discharge members of an embodiment according to Fig. 3; Fig. 4b shows a section along lines IV-IV in Fig. 4a; Fig. 5a shows the base plate at the end of a rotating machine, equipped with liquid phase discharge members of another embodiment according to the invention; Fig. 5b shows a top view in Fig. 5a; Fig. 6 shows a 3D view of liquid phase discharge members according to Fig. 5; Fig. 7 shows a front view of liquid phase discharge members according to Fig. 5; Fig. 8 shows a section through lines VIII-VIII in Fig. 7; and Fig. 9 shows a third embodiment of a liquid phase discharge member according to the invention.
    [0021] [00021] Fig. 1 shows a prior art settling centrifuge 1 comprising a bowl and a helical conveyor 3 which are mounted on an axis 4 so that, in use, they can be placed to rotate around a geometric axis 5 pivoting, the pivoting geometry axis 4 extends in a longitudinal direction of the bowl 2. The bowl 2 also comprises a base plate 6 provided at a longitudinal end of the bowl 2, where the base plate 6 has an inner side 7 and a side external 8. The base plate 6 is provided with several liquid phase outlet openings 9. Furthermore, the basin 2 is at an opposite end to the base plate 6 provided with solid phase discharge openings 10.
    [0022] [00022] Furthermore, the helical conveyor 3 comprises inlet openings 1 for supplying, as food, for example, slurry to the centrifugal separator 1, the slurry comprises a light or liquid phase 12 and a heavy or solid phase 13. During rotation of centrifuge separator 1, separation of the liquid 12 and solid 13 phases is obtained. The liquid phase 12 is discharged through the outlet openings 9 in the base plate 6, while the helical conveyor 3 carries the solid phase 13 towards the discharge openings of the solid phase 10 through which the solid phase 13 is discharged.
    [0023] [00023] Fig. 2a shows a view of a section of the base plate 6 assembled with a liquid phase discharge member 14 and fixed with screws 24 according to an embodiment of the invention. Also the pivoting direction 15 of the bowl 2 is shown. Furthermore, it can be seen that the direction 16 of the liquid flow is essentially in the opposite direction to the rotating direction 15. However, there is also a component in the direction of the rotating geometry axis 5, which leads to a better flow without interfering with other members of liquid phase discharge. This can be seen in Fig. 2b.
    [0024] [00024] Fig. 3 shows a view of the liquid phase discharge member 14 with an open straight channel 17. Here channel 17 can be seen with its longitudinal geometric axis 18. Channel 17 is covered only on three sides, that is yes, it is open at the top. Thus, there is no risk of clogging or similar closing of channel 17. It can also be seen cracks 19 in flange 20 which allows the adjustment of the liquid phase discharge member 14 to a specific level in the basin. However, there may be other mechanical solutions for attaching flange 20 to the base plate 6. Furthermore, this allows it to be mounted on different types or sizes of rotating machines or centrifuge separators. Also shown is the progressive reduction 21 before channel 17. This progressive reduction to the liquid when it is approaching the channel leads to a low loss of pressure of the liquid. Channel 17 may also have a cross-section in the form of a U, a half circle or any other appropriate shape.
    [0025] [00025] In Fig. 4a, a top view for the liquid phase discharge member 14 is shown. Here, clearly an angle between the flange 20 and the longitudinal geometric axis 18 of the channel 17 can be seen. The angle α can be in the range of 1 to 35 °, more preferably between 10 and 20 °, with a preferred value of 15 °. The flange 20 can be rectangular (as shown), circular or of another shape. Fig. 4b shows a section along line IV-IV in Fig. 4a in which an increase in wall 21 of flange 20 at an angle β can be seen. The angle β can be in the range of 1 to 80 °, more preferably between 25 and 45 °, specifically close to 35 °. This increase in wall 21 creates a progressive reduction when the liquid is approaching the channel. Thus, the pressure loss of the liquid is not high. With this reduction in pressure drop, the liquid velocity does not decrease much at the beginning of the channel. Therefore, this leads to a high speed at the end of the channel and an increased power reduction.
    [0026] [00026] Fig. 5a shows a view for a base plate 6 similar to Fig. 2a, but with a liquid phase discharge member 22 according to another embodiment of the invention. Again the rotating direction 15 is shown and the flows 16 and 16 'of the liquid in the opposite direction to the rotating direction 15. Through the closed channel 23, which is arranged outwardly from the geometric axis 5 in relation to the channel 17, there is a second flow 16 '. Again there is a component also in the direction of the rotating geometry axis 5, which can be seen in the top view in Fig. 5b.
    [0027] [00027] In Fig. 6, a view of an embodiment of a liquid phase discharge member 22 according to the invention is shown. This liquid phase discharge member 22 consists of a flange 20, which can be rectangular (as shown), circular or of another shape, with slits 19 through which screws 24 are mounted to the base plate 6 of the basin 2. There is a channel open straight 17 which directs the flow at an angle away from the base plate 6. Below it, which also refers to the level of the fluid in the basin, the closed channel 23 is arranged. The closed channel 23 can be adjusted or equipped with a replaceable nozzle 26 with another open diameter to be adapted to different volumes of fluid. The fluid in the center of the rotating machine, for example, settling centrifuge, can be in the ratio of 10 to 90 to 70 to 30 from fluid through channel 17 to fluid through nozzle 23 in normal operation, but can range from up to 100 to 0 especially if all nozzles are clogged. Preferential is a ratio of less than 50 to 50, as this allows for a better directed flow and a higher speed that leads to a greater amount of energy recovered.
    [0028] [00028] Fig. 7 shows a drawing of the liquid phase discharge member 22 with slits 19 arranged in flange 20. Open straight 17 can be seen with its outlet opening and later closed channel 23, which can have a cross section tubular, rectangular, polygonal or other cross section, can be seen. Since the opening of the closed channel 23 (and straight open channel 17) can be seen, of course, they are at an angle to the plane of the flange 20.
    [0029] [00029] Fig. 8 shows a section through the liquid phase discharge member 22 along line VIII-VIII in Fig. 7. The diameter 25 of the (shown) closed tubular channel 23 corresponds to the width of the open straight channel 17 and the central geometric axis of the closed channel 23 is therefore in the direction of the longitudinal geometric axis 18 of the channel 17 and limits an angle α to the flange 20. The length 24 of the closed channel 23 is in the range between 0.1 and 5 times the diameter or the width, more favorably in 1 to 2 times. Fig. 9 shows another embodiment of the liquid phase discharge port similar to Fig. 2 a. However, here channel 17 is curved.
    [0030] [00030] From Figures 5 a, 5b, 6, 7, 8 and 9 it can be seen that the progressive reduction to the liquid when it is approaching the channel can have several shapes. The main effect of this progressive reduction is that the pressure loss of the liquid is not high.
    [0031] [00031] In general, the liquid phase discharge port 14, 22 is provided with two parts. One part has a progressive restriction 21 to channel (s) 17, 23. The other part includes at least one open channel 17 or closed channel 23 with or without a nozzle.
    [0032] [00032] Although the invention has been described in terms of particular modalities, it is not limited to these examples, but can be other modalities within the scope of the embodiments. For example, cross sections of channels can take all types of formats.
    权利要求:
    Claims (13)
    [0001]
    Rotary machine (1), especially a decanter centrifuge, comprising a bowl (2) rotatable about a geometrical axis (5) to generate a cylindrical grouping of a fluid feed slurry, said bowl (2) having a heavy phase discharge port (10); and a base plate (6) provided at a longitudinal end (8) of said bowl (2); at least one outlet opening (9) provided on said base plate (6); a liquid phase discharge port member (14, 22) placed over at least one outlet opening (9); said liquid phase discharge port member (14, 22) including at least one channel (17) with a longitudinal geometric axis (18); the longitudinal geometric axis (18) of said channel (17) extending at an acute angle (α) in relation to said base plate (6) and said channel (17) has an extension in the direction of said longitudinal geometric axis (18), characterized by the fact that the at least one channel (17) with said longitudinal geometric axis (18) is an open straight channel covered only on three sides and the said liquid phase discharge port member ( 14, 22) includes a progressive reduction before said channel (17, 23).
    [0002]
    Rotary machine (1) according to claim 1, characterized in that the length of said channel (17, 23) is 0.1 to 5 times the width.
    [0003]
    Rotating machine (1) according to claim 1, characterized in that an additional closed channel (23) disposed radially outwardly in relation to said at least one channel (17) has a longitudinal geometric axis (18) disposed in parallel to said longitudinal geometric axis (18) of said at least one channel (17).
    [0004]
    Rotary machine (1), according to claim 3, characterized by the fact that the length of the closed channel (23) is equal to the length of said at least one channel (17).
    [0005]
    Rotating machine (1) according to claim 3, characterized in that a nozzle member is placed at the end of said closed channel (23).
    [0006]
    Rotary machine (1) according to claim 5, characterized in that said nozzle member is adjustable and / or replaceable.
    [0007]
    Rotating machine (1) according to claim 1, characterized in that slots (19) are provided in said liquid phase discharge port member (14, 22) to adjust said phase discharge port member liquid (14, 22) in the radial direction.
    [0008]
    Liquid phase discharge door member (14, 22) adapted to be placed over an outlet opening of a rotating machine (1), especially a settling centrifuge, comprising a flange (20); an inlet opening (9) provided in said flange (20); said liquid phase discharge port member (14, 22) including at least one channel (17) with a longitudinal geometric axis (18); the longitudinal geometric axis (18) of said channel (17) extending at an acute angle (α) relative to said flange (20) and said channel (17) has an extension in the direction of said longitudinal geometric axis (18) ), characterized by the fact that the at least one channel (17) with said longitudinal geometric axis (18) is an open straight channel covered only on three sides and said liquid phase discharge port member (14, 22) includes a progressive reduction before said channel (17, 23).
    [0009]
    Liquid phase discharge port member (14, 22) according to claim 8, characterized in that the length of said channel (17) is 0.1 to 5 times the width.
    [0010]
    Liquid phase discharge port member (14, 22) according to claim 8, characterized in that an additional closed channel (23) disposed below a bottom of said at least one channel (17) has an axis longitudinal geometric (18) arranged parallel to said longitudinal geometric axis (18) of said at least one channel (17).
    [0011]
    Liquid phase discharge port member (14, 22) according to claim 10, characterized in that the length of said closed channel (23) is equal to the length of said at least one channel (17).
    [0012]
    Liquid phase discharge port member (14, 22) according to claim 10, characterized by an adjustable and / or replaceable nozzle member disposed at the end of said closed channel (23).
    [0013]
    Liquid phase discharge port member (14, 22) according to claim 8, characterized in that slots (19) are provided in said liquid phase discharge port member (14, 22) to adjust the said liquid phase discharge port member (14, 22) in relation to said outlet opening (9) of said rotating machine (1).
    类似技术:
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    同族专利:
    公开号 | 公开日
    WO2013017223A1|2013-02-07|
    KR102026391B1|2019-11-04|
    EP2736648B1|2016-09-28|
    EP2551021A1|2013-01-30|
    JP2014523812A|2014-09-18|
    BR112014002159A2|2017-02-21|
    CN106238230A|2016-12-21|
    ZA201400241B|2014-09-25|
    CN106238230B|2020-03-03|
    CA2843483C|2019-05-14|
    CN103842092A|2014-06-04|
    ES2606134T3|2017-03-22|
    PL2551021T3|2017-02-28|
    DK2551021T3|2017-01-02|
    US20140235423A1|2014-08-21|
    EP2736648A1|2014-06-04|
    CN103842092B|2016-08-24|
    JP5995334B2|2016-09-21|
    RU2014104771A|2015-09-10|
    ES2609078T3|2017-04-18|
    PL2736648T3|2017-08-31|
    CA2843483A1|2013-02-07|
    US9993831B2|2018-06-12|
    DK2736648T3|2017-01-16|
    KR20140052001A|2014-05-02|
    RU2593775C2|2016-08-10|
    JP6228636B2|2017-11-08|
    JP2016179472A|2016-10-13|
    EP2551021B1|2016-09-14|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-05| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-04-22| B25G| Requested change of headquarter approved|Owner name: ANDRITZ S.A.S. (FR) |
    2020-10-27| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-02-23| B09A| Decision: intention to grant|
    2021-04-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/07/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11006271.8A|EP2551021B1|2011-07-29|2011-07-29|Centrifuge and discharge port member of a centrifuge for power reduction|
    EP11006271.8|2011-07-29|
    PCT/EP2012/003159|WO2013017223A1|2011-07-29|2012-07-26|Centrifuge and discharge port member of a centrifuge for power reduction|
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