• 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:
    Centrifuge for cleaning a liquid to be cleaned, in particular free-jet centrifuge for cleaning lubricating oil of an internal combustion engine, with a rotor, wherein the rotor has a radially inner rotor spindle, a radially outer rotor cylinder, and an insert (16) with deposition surfaces positioned between the rotor spindle and the rotor cylinder Impurities, wherein the insert (16) is axially flowed through by the liquid to be cleaned. The insert (16) has a plurality of concentric walls (18, 19, 20), namely a tubular inner wall (18), a tubular outer wall (19) and a plurality of tubular central walls (20) formed by radially extending webs (21) are connected. The rotor further includes a bottom member (22), the bottom member (22) having recesses (23) sized to be permeable to the liquid but impermeable to a majority of the contaminant's sediment.
    公开号:CH712415A2
    申请号:CH00009/17
    申请日:2017-01-04
    公开日:2017-10-31
    发明作者:Gruschwitz Florian；Hellriegel Fabian
    申请人:Man Diesel & Turbo Se；
    IPC主号:
    专利说明:

    Description [0001] The invention relates to a centrifuge. Furthermore, the invention relates to an insert and a bottom element for a centrifuge.
    From EP 1268 074 B1 a centrifuge, namely a free-jet centrifuge, for the purification of lubricating oil of an internal combustion engine is known. The free-jet centrifuge known from this prior art has a housing and a rotor rotatably mounted in the housing. The rotor has a radially inner rotor spindle, a radially outer rotor cylinder and a positioned between the radially inner rotor spindle and the radially outer rotor cylinder insert with deposition surfaces for contamination of the liquid to be cleaned. The liquid to be cleaned can be supplied via the rotor spindle and at least one recess introduced into the rotor spindle to the insert, which has the deposition surfaces for the contaminants. The deposition surfaces are aligned according to EP 1268 074 B1 spirally to the axis of rotation of the rotor.
    Centrifuges known from the prior art have only a limited separation efficiency for impurities. There is a need to increase the separation efficiency of centrifuges. Another problem with centrifuges known from the prior art is that when the use of the centrifuge has to be changed due to too high loading of the same with sediments of the contaminants deposited sediments in the direction of the ground or towards in the area the soil positioned exit nozzles can get, causing the outlet nozzles clog. This also limits the separation efficiency of centrifuges. Under certain circumstances, even with excessive contamination of the nozzles, the centrifuge must be subjected to a very expensive cleaning process.
    On this basis, the present invention seeks to provide a novel centrifuge and an insert and a bottom element for a centrifuge.
    This object is achieved by a centrifuge according to claim 1. According to the invention, the insert has a plurality of concentric walls, namely a tubular inner wall, a tubular outer wall and a plurality of tubular middle walls connected by webs extending radially between the inner deposition surface and the outer deposition surface. The rotor further comprises a bottom member, the bottom member having recesses sized to be impermeable to the liquid but impermeable to the majority of the sediments of the contaminants. Minimal amounts of small particles, the recesses can happen. Nevertheless, well over 50% of the sediments remain within the centrifuge.
    The design of the use of the inventive centrifuge allows a particularly effective cleaning of a liquid to be cleaned and thus the provision of a high separation efficiency. Also, the bottom element of the centrifuge ensures the increase of the separation efficiency, since there is no danger that when replacing the insert a disturbing amount of sediment of contaminants in the area of outlet nozzles of the centrifuge passes.
    According to an advantageous embodiment, an outer diameter of the outer wall of the insert corresponds to an inner diameter of the radially outer rotor cylinder and an inner diameter of the inner wall of the insert corresponds to an outer diameter of the radially inner rotor spindle, wherein the webs of the insert exclusively between a directed radially outward Deposition surface of the inner wall and a radially inwardly directed deposition surface of the outer wall extend. Hereby, the entire interior of the rotor of the centrifuge, which is limited in the radial direction by the rotor spindle and the rotor cylinder, are optimally filled by the use, whereby the provision of a high separation efficiency is possible.
    The use, namely of the concentric walls and the webs limited sedimentation of the insert are open at the bottom, so that the use or the sedimentation without direction reversal of the liquid to be cleaned is flowed through from top to bottom or are. This also makes it possible to provide a high separation efficiency.
    Preferably, the inner rotor spindle has at least one recess for the entry of the liquid to be cleaned in the insert, wherein the tubular inner wall is dimensioned at an upper end such that the tubular inner wall does not obscure the or each recess but rather the Inlet of the liquid to be cleaned in the insert releases, and wherein the tubular-like middle walls are sized at an upper end as the tubular inner wall. This ensures that the liquid to be cleaned can pass unhindered into the area of all deposition surfaces, whereby a high separation efficiency can be provided.
    Preferably, the bottom member is positioned at a lower end of the rotor cylinder and insert, wherein the rotor cylinder and the insert with the lower end stand up flush on the bottom element. This detail also serves to optimally fill the available interior of the rotor by the use and thus the provision of a high separation efficiency.
    Preferably, the bottom member is contoured frusto-conical, wherein the tubular inner wall of the insert and the tubular middle walls of the insert at a lower end thereof are successively shortened relative to the outer wall in the axial direction such that seen from radially outside to radially inside the axial length of the middle walls successively reduced in the direction of the axial length of the inner walls, so that the use in
    Reach each wall with the lower end of the same flush on the floor element. Again, the separation efficiency of the centrifuge can be increased.
    The insert for a centrifuge is in claim 13 and the bottom element for a centrifuge is defined in claim 15.
    Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
    1 shows a detail of a centrifuge in the region of a rotor without insert;
    Fig. 2: a cross section in the radial direction through the use of the centrifuge;
    3 shows a cross section in the axial direction through the use of the centrifuge;
    4 shows a perspective view from below of the insert;
    5 is a perspective view from above of the floor element; and FIG. 6 shows a cross section in the axial direction through the bottom element.
    The present invention relates to a preferably designed as a free-jet centrifuge centrifuge for cleaning a liquid to be cleaned, in particular for cleaning lubricating oil of an internal combustion engine.
    Such a free-jet centrifuge has a housing (not shown) and a rotatably mounted in the housing rotor 10th
    The rotor 10 has a radially inner rotor spindle 11 and a radially outer rotor cylinder 12, wherein a cavity of the rotor 10 in the radial direction of an outer diameter of the radially inner rotor spindle 11 and an inner diameter of the radially outer rotor cylinder 12 is limited.
    In the rotor spindle 11 at least one bore or recess 13 is introduced, can be introduced via the liquid to be cleaned in the cavity between the rotor spindle 11 and the rotor cylinder 12. Below the rotor cylinder 12, a bottom structure 14 is positioned with at least one cleaned liquid outlet nozzle 15.
    In the plane defined by the rotor spindle 11 and the rotor cylinder 12 free space of the rotor 10 of the centrifuge, not shown in Fig. 1, but shown in Fig. 2 to 4 shown insert 16 is positioned, the deposition surfaces 17 has for impurities. This insert 16 is in the axial direction of the same flows through by the liquid to be cleaned.
    The insert 16 has a plurality of concentric walls, namely a tubular inner wall 18, a tubular outer wall 19 and a plurality of positioned between the radially inner wall 18 and the radially outer wall 19, tubular middle walls 20. All walls 18, 19 and 20 of the insert 16 are positioned concentrically with each other, wherein these walls 18,19 and 20 are interconnected by radially extending webs 21. Deposit surfaces 17 for the contaminants are provided both by the concentric walls 18, 19 and 20 and by the webs 21.
    The concentric walls 18, 19, 20 and the webs 21 define sedimentation chambers of the insert 16, wherein deposited on the deposition surfaces 17 of the sedimentation impurities in the form of sediments. The insert 16 or the sedimentation chambers of the latter is or are open at the bottom, so that the insert 16 or the sedimentation chambers are flowed through without reversing the direction of the liquid exclusively from top to bottom. This is particularly advantageous for an optimal residence time of the liquid to be cleaned and thus a high separation efficiency.
    As best seen in Figure 2, the walls 18, 19 and 20 of the insert 16, which are concentric with each other and provide deposition surfaces 17, are not uniformly spaced apart in the radial direction, rather, this radial distance is between the concentric Walls 18, 19 and 20 of the insert 16 different, so that the same varies accordingly seen from radially inward to radially outward.
    An outer diameter of the radially outer wall 19 of the insert 16 is adapted to an inner diameter of the radially outer rotor cylinder 12 and corresponds to the same. Further, an inner diameter of the radially inner wall 18 of the insert 16 corresponds to an outer diameter of the radially inner rotor spindle 12. webs 21, which serve to connect the concentric walls 18, 19 and 20 extend in the radial direction exclusively between an outwardly directed deposition surface of the inner wall 18 and a radially inwardly directed deposition surface of the outer wall 19 of the insert 16. The webs 21 are therefore neither radially inwardly relative to the inner wall 18 nor radially outwardly relative to the outer wall 19 of the insert 16 before. The spanned by the rotor spindle 11 and the rotor cylinder 12 in the radial direction cavity of the rotor 10 of the free-jet centrifuge is optimally filled by the insert 16.
    An axial length of the insert 16 preferably corresponds to an inner height of the rotor cylinder 10. As already stated, the inner rotor spindle 12 has the or each recess 13, can be directed through the liquid to be cleaned in the direction of the insert 16. The tubular inner wall 18 of the insert 16 is dimensioned at an upper end thereof such that the inner wall 18 of the insert 16 does not cover the or each recess 13, but rather releases it, so that the entry of the liquid to be cleaned in the direction of the insert 16 is possible without hindrance.
    Further, the central walls 21 of the insert 16 are configured accordingly at its upper end, namely such that the same seen in the projection, the or each recess 13 of the rotor spindle 11 does not obscure, so that the liquid to be cleaned in the field of all Deposit surfaces can reach, ie in all axially to flow through chambers of the insert 16, which are spanned by the concentric walls 18,19 and 20 and by the webs 21.
    The radially outer wall 19 of the insert 16 may at its upper end (see Fig. 3) opposite the walls 18,20 be extended, so as to prevent liquid to be cleaned on the radially inner wall of the radially outer rotor cylinder 12 passes ,
    In order to prevent replacement of the insert 16 that sediments or deposited impurities reach the area of the outlet nozzles 15, the centrifuge according to the invention has, in addition to the insert 16, a bottom element 22, the bottom element 22 having recesses 23 (see FIG. 5) ) whose size is such that it is permeable to purified liquid but impermeable to most of the sediment of the contaminants.
    The recesses may for example be designed as holes with a diameter of about 0.1 mm to 10 mm. The diameter of the holes on a floor element can vary quite a bit. Especially in the field of large diesel engines, for example, for ships, the particle diameter of the sediments compared to those in a conventional passenger car diesel engine can be considerably larger.
    Accordingly, most of the sediments can not pass through the recesses 23 in the bottom element 22 and can not reach the region of the outlet nozzles 15 and clog them.
    As shown in particular in FIGS. 5 and 6, the bottom element 22, which may be embodied as a perforated perforated plate, preferably has a frustoconical contour, which tapers frustoconically from bottom to top. The radially outer rotor cylinder 12 of the rotor 10 is flush with a lower end on the bottom element 22, namely on a radially outer portion of the bottom member 22. The walls 18, 19 and 20 of the insert 16 are adapted at its lower end to the frusto-conical contour contoured of the bottom element 22, namely such that all walls 18, 19 and 20 of the insert 16 are flush with the bottom element 22.
    For this purpose, the walls 18,19 and 20 are successively shortened from radially outward radially inward, so that seen from radially outward to radially inwardly, the axial length in particular of the central walls 20 in the direction of the inner wall 18 towards gradually decreases. This makes it possible that the insert 16 rests flush on the bottom element 22 in the region of each of its walls 18, 19 and 20.
    The bottom element 22 may also be a lattice-like structure which is permeable to the liquid but impermeable to the vast majority of the sediments of the contaminants.
    The inventive centrifuge has a high separation efficiency. The liquid to be cleaned can pass unhindered onto the deposition surfaces 17 provided by the insert 16. The bottom element 22 predominantly prevents the entry of contaminated liquid into the outlet nozzles 15 and therefore clogs the same when replacing the insert 16.
    For the use of 16 and the bottom element 22 different materials can be used, such as metallic materials or plastics.
    The invention further relates to the insert 16 and the bottom element 22 as such in order to retrofit existing centrifuges can. With regard to the features of the insert 16 and the bottom element 22, reference is made to the above statements.
    List of Reference Numerals 10 rotor 11 rotor spindle 12 rotor cylinder 13 recess 14 soil structure
    权利要求:
    Claims (16)
    [1]
    15 outlet nozzle 16 insert 17 deposition surface 18 wall 19 wall 20 wall 21 web 22 bottom element 23 recess claims
    1. Centrifuge for cleaning a liquid to be cleaned, in particular free-jet centrifuge for cleaning lubricating oil of an internal combustion engine, with a rotor (10), wherein the rotor (10) has a radially inner rotor spindle (11), a radially outer rotor cylinder (12), and a between the rotor spindle (11) and the rotor cylinder (12) positioned insert (16) having deposition surfaces (17) for contaminants, wherein the insert (16) is axially flowed through by the liquid to be cleaned, characterized in that the insert (16) a plurality of concentric walls (18, 19, 20), namely a tubular inner wall (18), a tubular outer wall (19) and a plurality of tubular central walls (20) joined by radially extending webs (21); the rotor further comprises a bottom member (22), the bottom member (22) having recesses (23) sized to be impermeable to the liquid but impermeable to a majority of the contaminants.
    [2]
    2. Centrifuge according to claim 1, characterized in that the insert (16), namely of the concentric walls (18, 19, 20) and the webs (21) limited sedimentation chambers of the insert (16), is open at the bottom or are, so that the insert (16) or the sedimentation chambers flow through without reversing the direction of the liquid from top to bottom.
    [3]
    3. Centrifuge according to claim 1 or 2, characterized in that an outer diameter of the outer wall (19) of the insert (18) has an inner diameter of the radially outer rotor cylinder (12) and an inner diameter of the inner wall (18) of the insert (16) Outer diameter of the radially inner rotor spindle (1) corresponds.
    [4]
    4. Centrifuge n according to one of claims 1 to 3, characterized in that the webs (21) of the insert (16) exclusively between a radially outwardly directed deposition surface of the inner wall (18) and a radially inwardly directed deposition surface of the outer Extend wall (19).
    [5]
    5. Centrifuge according to one of claims 1 to 4, characterized in that an axial length of the insert (16) corresponds to an inner height of the rotor cylinder (12).
    [6]
    6. Centrifuge according to one of claims 1 to 5, characterized in that a radial distance between the concentric walls (18, 19, 20) of the insert (16) varies from radially inward to radially outward.
    [7]
    7. Centrifuge according to one of claims 1 to 6, characterized in that the inner rotor spindle (11) has at least one recess (13) for the entry of the liquid to be cleaned in the insert (16), wherein the tubular inner wall (18). the insert (16) is sized at an upper end such that the tubular inner wall (18) of the insert (16) does not obscure the or each recess (13) of the inner rotor spindle (11) but rather obstructs the entry of the liquid to be cleaned the insert (16) releases.
    [8]
    A centrifuge according to claim 7, characterized in that the tubular central walls (20) of the insert (16) are sized at an upper end thereof, such as the tubular inner wall (18) of the insert (16).
    [9]
    9. Centrifuge according to one of claims 1 to 8, characterized in that the bottom element (22) at a lower end of the outer rotor cylinder (12) and the insert (16) is positioned, wherein the rotor cylinder (12) and the insert (16 ) with the lower end flush with the floor element (22).
    [10]
    10. Centrifuge according to one of claims 1 to 9, characterized in that the bottom element (22) is designed as a perforated perforated plate or as a fabric structure.
    [11]
    11. Centrifuge according to one of claims 1 to 10, characterized in that the bottom element (22) is frustoconically contoured.
    [12]
    12. A centrifuge according to claim 11, characterized in that the tubular inner wall (18) of the insert (16) and the tubular central walls (20) of the insert (16) at a lower end thereof successively with respect to the outer wall (19) of the Insert (16) are shortened in the axial direction such that seen from radially outside to radially inside the axial length of the central walls (20) successively reduced in the direction of the axial length of the inner walls (18), so that the insert (16) Region of each wall (18,19, 20) with the lower end of the same flush on the bottom element (22).
    [13]
    13. insert (16) for a centrifuge for cleaning a liquid to be cleaned, characterized in that it has a plurality of concentric walls (18,19, 20), namely a tubular inner wall (18), a tubular outer wall (19) and a plurality of tubular middle walls (20) joined by radially extending webs (21).
    [14]
    14. Use according to claim 13, characterized in that the same is further developed according to one of claims 2 to 8,12.
    [15]
    15 bottom element (22) for a centrifuge for cleaning a liquid to be cleaned, characterized in that the same recesses (23) whose size is dimensioned such that the same for the liquid permeable but impermeable to a vast majority of the sediments of the contaminants ,
    [16]
    16. Floor element according to claim 15, characterized in that the same is further developed according to one of claims 9 to 11.
    类似技术:
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    DE102019008741A1|2021-06-17|Filter device
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    同族专利:
    公开号 | 公开日
    CN107303541A|2017-10-31|
    CH712415B1|2021-04-15|
    JP2017200692A|2017-11-09|
    JP6873733B2|2021-05-19|
    DE102016206823A1|2017-10-26|
    KR20170120508A|2017-10-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SU450593A1|1972-01-12|1974-11-25|Карагандинский политехнический институт|Thin-blade paddle insert for centrifuges|
    SU889104A1|1979-12-03|1981-12-15|Всесоюзный Научно-Исследовательский И Экспериментально-Конструкторский Институт Продовольственного Машиностроения|Liquid separator|
    DE50107568D1|2000-04-03|2006-02-09|Mann & Hummel Gmbh|CENTRIFUGE WITH AXIAL LOCATED DEPOSITS|
    US6428700B1|2000-09-06|2002-08-06|Baldwin Filters, Inc.|Disposable centrifuge cartridge backed up by reusable cartridge casing in a centrifugal filter for removing soot from engine oil|
    CN200939404Y|2006-08-22|2007-08-29|洛阳航峰自动化设备有限公司|Centrifugal oil-liquid purifier|
    CN203578027U|2013-10-23|2014-05-07|新乡市利尔过滤技术有限公司|Conical metal filter screen for centrifuge|
    CN204234223U|2014-11-27|2015-04-01|覃湘|Piston push centrifuge pusher dish filter|
    CN105195339B|2015-11-04|2018-02-02|世林（漯河）冶金设备有限公司|A kind of closed centrifugal machine exhaust apparatus|TW201917173A|2017-10-20|2019-05-01|日商道康寧東麗股份有限公司|Curable silicone composition and optical semiconductor device|
    法律状态:
    2018-07-31| PFA| Name/firm changed|Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL AND TURBO SE, DE |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016206823.7A|DE102016206823A1|2016-04-21|2016-04-21|Centrifuge and insert and bottom element for a centrifuge|
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