[go: up one dir, main page]

WO2010039083A1 - Dispositif de séparation d'une phase liquide plus légère d'un liquide de traitement plus lourd, installation de purification d'un liquide de traitement en recirculation au moyen du dispositif de séparation et procédé de séparation d'une phase liquide plus légère d'une phase liquide de traitement plus lourde - Google Patents

Dispositif de séparation d'une phase liquide plus légère d'un liquide de traitement plus lourd, installation de purification d'un liquide de traitement en recirculation au moyen du dispositif de séparation et procédé de séparation d'une phase liquide plus légère d'une phase liquide de traitement plus lourde Download PDF

Info

Publication number
WO2010039083A1
WO2010039083A1 PCT/SE2009/050457 SE2009050457W WO2010039083A1 WO 2010039083 A1 WO2010039083 A1 WO 2010039083A1 SE 2009050457 W SE2009050457 W SE 2009050457W WO 2010039083 A1 WO2010039083 A1 WO 2010039083A1
Authority
WO
WIPO (PCT)
Prior art keywords
processing liquid
tank
liquid
separation
collection container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2009/050457
Other languages
English (en)
Inventor
Hyosong M. Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2010039083A1 publication Critical patent/WO2010039083A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles

Definitions

  • the invention relates primarily to a device for separating a lighter liquid phase, preferably leaked oil, from a heavier liquid phase, preferably a processing liquid, such as a cutting fluid, in accordance with the preamble to claim 1.
  • Cutting fluids are used for example to cool and lubricate cutting machine tools and often consist of an emulsion of water and oil.
  • the cutting fluid is recirculated to a cutting fluid tank, it is often polluted with leaked oil from various components of the machine tool, which require lubrication.
  • leaked oil is accumulated in the cutting fluid and in time creates, among other things, hygiene problems and quality problems in machining.
  • the leaked oil thus promotes the growth of bacteria and reduces cooling capacity, as well as soiling tools and finished products. This requires regular fluid changes involving production down-time, increased environmental burden through waste incineration, and increased production cost.
  • One alternative to frequent fluid changes is to clean the fluid from leaked oil to thereby extend the interval between fluid changes.
  • Known equipment for cleaning cutting fluid includes for example band skimmers and mobile separators.
  • the disadvantage of the known equipment is, inter alia, that they require extensive manual maintenance and large capital investment in the central cutting fluid system, which must supply a number of machine tools.
  • the separation device comprises
  • a separation tank which is divided by an intermediate wall into, firstly, a separation chamber provided with an inlet, in which separation chamber there is placed a removable oil collection container with an upper inlet for the processing liquid flowing into the separation chamber and with a closed bottom, and secondly, an outlet chamber, to which cleaned processing liquid from the oil collection chamber can flow via a communication opening at the bottom of the separation tank via a liquid trap;
  • the liquid trap comprising firstly a substantially vertical outer pipe extending into the oil collection container and having a lower open end spaced from the bottom of the oil collection container and with an upper end which extends at least up to the upper portion of the oil collection container, and secondly an inner trap pipe which extends inside the outer pipe and substantially parallel therewith, and has an open upper inlet end and an open lower outlet end, which extends in a sealed manner through the oil collection container, the opening of the upper inlet end of the inner liquid trap pipe being disposed at a level below the normal liquid level in the oil collection container, and
  • a pump arranged in the outlet chamber in the separation tank to pump clean processing liquid from the outlet chamber to a processing liquid tank and at the same time creating a liquid level in the cleaned processing liquid in the outlet chamber, which is lower than the liquid level in the processing liquid tank and lower than the opening of the upper inlet end of the inner liquid trap pipe.
  • the leaked oil can be collected in an oil collection container and, at appropriate intervals, be emptied by lifting the container out of the first chamber of the separation tank and pouring the oil out into an external sump or the like.
  • the outer pipe is permanently fixed in the oil collection container and extends up from the upper portion of the oil collection container and has a gripping handle for lifting up the oil collection container from the separation chamber for emptying the oil out of the container.
  • its inlet has a funnel configuration, and a strainer can be placed above the inlet of the oil collection container to catch larger polluting particles in the processing liquid.
  • a separation device is mounted stationary in the upper portion of the processing liquid tank, but, alternatively, it can be installed floating in the processing liquid in the processing liquid tank to follow the processing liquid level changes.
  • the separation tank can be coupled to buoyant bodies (pontoons) which can be vertically displaceably guided in the processing liquid tank by means of suitable guides.
  • the separation device can also be arranged to stand free outside the processing liquid tank.
  • an oil separating coalescing element can be placed in the oil collection container upstream of the lower, open end of the outer pipe to improve collection of leaked oil.
  • the invention further relates to a plant for cleaning, with the aid of a separating device according to the invention, a recirculating processing liquid, which is to be fed to at least one working machine, said plant comprising a separation device according to one of claims 1 to 11, which can be immersed in processing liquid in a processing liquid tank, there being in the processing liquid tank at least one outlet pump for pumping processing liquid to the working machine, and an inlet for polluted processing liquid from the working machine or machines.
  • the invention also relates to a method for separating a lighter liquid phase, preferably leaked oil, from a heavier liquid phase, preferably processing liquid, such as a cutting fluid. That which particularly characterizes the method is disclosed in the independent claiml3, said method comprising the steps of:
  • Fig. 1 is a side view of a processing liquid cleaning plant, including the separation device according to the invention
  • Fig. 2 is a schematic perspective view of the separation device according to the invention.
  • Fig. 3 is a schematic side view of an oil collection container in the separation device of Figs. 1 and 2, with associated liquid trap;
  • Fig. 4 is a plan view of the container in Fig. 3;
  • Fig. 5 is a schematic perspective view of a separation device according to the invention in an embodiment with floating suspension in the processing liquid tank;
  • Fig. 6 is a side view of the embodiment in Fig. 5.
  • 10 generally designates a processing liquid cleaning plant with a separation device according to the present invention.
  • the plant 10 comprises a tank 12 which contains a processing liquid 14, for example a cutting fluid in form of a water/oil emulsion for cooling and lubricating one or more machines 16 for cutting machining of workpieces.
  • the processing liquid can also consist of a cleaning fluid, which can be used to clean machined workpieces or the like.
  • the cutting fluid 14 in the tank 12 is fed to the machines 16 with the aid of a pump 18 driven by an electric motor and is and is returned to the tank 12 via a return line 20.
  • a pump 18 driven by an electric motor
  • is and is returned to the tank 12 via a return line 20 During the use of the cutting fluid in the machines 16 it is polluted to a certain degree by leaking lubricant from the various components of the machines.
  • This leaked oil is accumulated as a lighter liquid phase in the cutting fluid and in time can create inter alia hygienic and quality problems for machining. Such leaked oil can increase bacteria growth and reduce the cooling capacity as well as dirtying the tools and the finished products. In the tank 12 the leaked oil is spread as a thin surface layer a few tenth of a millimeter thick on the heavier emulsion phase.
  • the separation device 22 comprises a separation tank 24 provided with an inlet 36.
  • the tank can be mounted stationary in an upper portion of the cutting fluid tank 12 and extend down into the cutting fluid therein.
  • the separation tank 24 has a closed bottom 26 and is divided by means of a substantially vertical intermediate wall 28 into a separation chamber 30 and an outlet chamber 32 for cleaned cutting fluid.
  • the separation chamber 30 communicates with the outlet chamber 32 via a free space 34 under the intermediate wall 28.
  • the inlet opening(s) 36 of the separation tank 24 have portions lying under the liquid level 38 in the cutting fluid tank 12 to permit a surface layer of the cutting fluid 14 to flow down into an oil collection container 40 placed in the separation chamber 30.
  • the oil collection container 40 has an upper, funnel-shaped inlet 42 to receive the cutting fluid flowing down with its lighter leaked oil phase.
  • the inlet 42 can have a strainer 44 (Figs. 2 — 4) placed thereover to catch particles in the liquid.
  • the oil collection container 40 has a bottom 45 and is permanently integrated with a liquid trap, which comprises a substantially vertically orientated outer pipe 46 with a lower, open end 48, spaced from the bottom 26 of the separation tank 24, and with an upper end, which extends up above the separation tank 24 and there has a handle 50 to permit the oil collection container 40 to be lifted up simply out of the separation chamber 30 in the tank 24 in order to empty out the collected oil in the oil collection container 40.
  • a liquid trap which comprises a substantially vertically orientated outer pipe 46 with a lower, open end 48, spaced from the bottom 26 of the separation tank 24, and with an upper end, which extends up above the separation tank 24 and there has a handle 50 to permit the oil collection container 40 to be lifted up simply out of the separation chamber 30 in the tank 24 in order to empty out the collected oil in the oil collection container 40.
  • the liquid trap further comprises an inner liquid trap pipe 52 which extends inside the outer pipe 46, essentially parallel and coaxial therewith. It has an open upper inlet end 54 and an open lower outlet end 56, the latter extending in a sealed manner through the bottom or through an adjacent side wall of the oil collection container 40, the opening of the upper inlet end 54 of the inner liquid trap pipe 52 being at a level below the normal liquid level 58 in the oil collection container 40.
  • a liquid pump 60 In the outlet chamber 32 of the separation tank 24 there is a liquid pump 60, which can be operated continuously to pump the cleaned cutting fluid phase flowing via the liquid trap 46, 52 to the outlet chamber 32, to the processing liquid tank 12.
  • Figs. 5 and 6 show an embodiment where the separation device 22, instead of being permanently mounted on or in the cutting fluid tank 12, is equipped with buoyant bodies or pontoons 66 on the sides of the separation tank 24 to make it possible for the separation device 22 to follow the surface level changes in the cutting fluid 14 in the tank 12.
  • the separation device 22 is guided vertically in tank 12 with the aid of vertical guide elements 68.
  • a brace 70 holding the pontoons 66 together on either side of the separation device 22 can abut against the edges of the guide elements 68 to guide the entire separation device 22 linearly vertically.
  • the separation device 22 is supported at 72 on the braces 70 and thus follows the movements of the pontoons 66 and thus the liquid level changes in the processing liquid tank 12. It is also possible to arrange the separation device 22 to be free outside the processing liquid tank 12. In this embodiment, the processing liquid is led between the separation device 22 and the processing liquid tank 12 via hoses or pipes (not shown).

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Abstract

L'invention concerne un dispositif (22) de séparation d'une phase liquide plus légère d'une phase liquide plus lourde, de préférence d'un liquide de traitement dans une cuve de liquide de traitement (12), qui comporte une cuve de séparation (24) avec premièrement une chambre de séparation (30), dans laquelle est placé un contenant de récupération  d'huile monté de façon amovible (40) avec un fond fermé (45), et deuxièmement une chambre de sortie (32), vers laquelle du liquide de traitement purifié provenant de la chambre de récupération d'huile (40) peut s'écouler par l'intermédiaire d'une ouverture de communication (34) au fond de la cuve de séparation (24) par l'intermédiaire d'un piège à liquide (46, 52), et une pompe disposée dans la chambre de sortie (32) dans la cuve de séparation (24) afin de pomper le liquide de traitement purifié provenant de la chambre de sortie (32) vers la cuve de liquide de traitement et, en même temps, afin d’établir un niveau de liquide (62) dans le liquide de traitement purifié dans la chambre de sortie (32) qui est inférieur au niveau de liquide (38) dans la cuve de liquide de traitement (12) et inférieur à une ouverture d'entrée supérieure d'un tuyau (52) du piège à liquide. L'invention concerne également une installation et un procédé de purification d'un liquide de traitement en recirculation qui doit alimenter au moins une machine de travail (16), comprenant le dispositif de séparation (22) selon l'invention.
PCT/SE2009/050457 2008-10-02 2009-04-28 Dispositif de séparation d'une phase liquide plus légère d'un liquide de traitement plus lourd, installation de purification d'un liquide de traitement en recirculation au moyen du dispositif de séparation et procédé de séparation d'une phase liquide plus légère d'une phase liquide de traitement plus lourde Ceased WO2010039083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0802079A SE532974C2 (sv) 2008-10-02 2008-10-02 Anordning för separation av en lättare vätskefas från en tyngre processvätskefas, anläggning för rening av en recirkulerande processvätska medelst separationsanordningen, samt förfarande för att separera en lättare vätskefas från en tyngre processvätskefas
SE0802079-4 2008-10-02

Publications (1)

Publication Number Publication Date
WO2010039083A1 true WO2010039083A1 (fr) 2010-04-08

Family

ID=42073704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/050457 Ceased WO2010039083A1 (fr) 2008-10-02 2009-04-28 Dispositif de séparation d'une phase liquide plus légère d'un liquide de traitement plus lourd, installation de purification d'un liquide de traitement en recirculation au moyen du dispositif de séparation et procédé de séparation d'une phase liquide plus légère d'une phase liquide de traitement plus lourde

Country Status (2)

Country Link
SE (1) SE532974C2 (fr)
WO (1) WO2010039083A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871005A (zh) * 2020-07-14 2020-11-03 国家能源集团煤焦化有限责任公司 环丁砜和导热油的分离装置
CN113856587A (zh) * 2021-09-08 2021-12-31 安徽广信农化股份有限公司 一种茚虫威生产用原料循环筛分设备及其筛分方法
CN114043308A (zh) * 2021-11-12 2022-02-15 上海应用技术大学 一种生物切削液循环处理系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508224A (en) * 1974-04-26 1978-04-19 Liquid Processing Syst Inc Method for separating oil from a dispersion of oil in water
US20040159597A1 (en) * 2003-02-14 2004-08-19 Lee F. Donald Portable purifying system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508224A (en) * 1974-04-26 1978-04-19 Liquid Processing Syst Inc Method for separating oil from a dispersion of oil in water
US20040159597A1 (en) * 2003-02-14 2004-08-19 Lee F. Donald Portable purifying system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871005A (zh) * 2020-07-14 2020-11-03 国家能源集团煤焦化有限责任公司 环丁砜和导热油的分离装置
CN111871005B (zh) * 2020-07-14 2022-03-01 国家能源集团煤焦化有限责任公司 环丁砜和导热油的分离装置
CN113856587A (zh) * 2021-09-08 2021-12-31 安徽广信农化股份有限公司 一种茚虫威生产用原料循环筛分设备及其筛分方法
CN114043308A (zh) * 2021-11-12 2022-02-15 上海应用技术大学 一种生物切削液循环处理系统
CN114043308B (zh) * 2021-11-12 2023-08-08 上海应用技术大学 一种生物切削液循环处理系统

Also Published As

Publication number Publication date
SE532974C2 (sv) 2010-06-01
SE0802079A1 (sv) 2010-04-03

Similar Documents

Publication Publication Date Title
EP0006925B1 (fr) Methode et installation de nettoyage d'un fluide de coupe
US7364663B2 (en) Filter system
US5601705A (en) Skimmer/coalescher system for removing and separating tramp oil from an aquaeous coolant
CN101450267B (zh) 切削液净化机
US5296150A (en) Water oil separator
JP5264001B1 (ja) 浮上油分離回収装置
CN109227214A (zh) 一种稳定加工品质的自动排屑过滤系统
US7384548B2 (en) Manually controlled skimming of industrial oil contaminants
CA2737609A1 (fr) Systemes et procedes de nettoyage des installations laitieres
WO2010039083A1 (fr) Dispositif de séparation d'une phase liquide plus légère d'un liquide de traitement plus lourd, installation de purification d'un liquide de traitement en recirculation au moyen du dispositif de séparation et procédé de séparation d'une phase liquide plus légère d'une phase liquide de traitement plus lourde
CN219907325U (zh) 油水分离设备
CN212347804U (zh) 浮动式液体收集装置和油水分离装置
KR102237989B1 (ko) 공작기계용 유수분리장치
EP1815900B1 (fr) Dispositif de séparation et procédé
CN107739069A (zh) 带旋转环套自润滑功能的含油污水的油水分离系统
US6827853B2 (en) Manually controlled skimming of industrial oil contaminants
JP2001327965A (ja) 油回収装置および油回収装置用油吸引手段
KR101694233B1 (ko) 폐절삭유의 유수분리장치
CN222132199U (zh) 一种用于切削液循环过滤系统的油水分离装置
CN219984108U (zh) 一种隔油提升设备
CN211004680U (zh) 撇油器
CN218529886U (zh) 一种餐饮油脂处理分离设备
CN115028279B (zh) 一种船舶污水处理装置
CN220530934U (zh) 一种餐厨垃圾一体化集装箱式提油装备自动提料机构
CN223029221U (zh) 一种分离油污的过滤装置器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09818053

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09818053

Country of ref document: EP

Kind code of ref document: A1