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US3606896A - Apparatus for degreasing objects with vapor from a boiling solvent - Google Patents

Apparatus for degreasing objects with vapor from a boiling solvent Download PDF

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Publication number
US3606896A
US3606896A US837094A US3606896DA US3606896A US 3606896 A US3606896 A US 3606896A US 837094 A US837094 A US 837094A US 3606896D A US3606896D A US 3606896DA US 3606896 A US3606896 A US 3606896A
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US
United States
Prior art keywords
vapor
solvent
zone
objects
cylinder
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.)
Expired - Lifetime
Application number
US837094A
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English (en)
Inventor
Kurt Anders Holm
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.)
Uddeholms AB
Original Assignee
Uddeholms AB
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 Uddeholms AB filed Critical Uddeholms AB
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Publication of US3606896A publication Critical patent/US3606896A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/025—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid conveyor feeding and discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0413—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath

Definitions

  • the invention relates to an apparatus for degreasing objects with vapor from a boiling solvent.
  • the vapor condenses on the relatively cold object and the condensed solvent flows off the object, carrying with it oil and grease.
  • the invention relates particularly to degreasing by means of vapor from chlorinated hydrocarbon, such as trichlcroethylene and tetrachloroethylene. Vapor from these solvents is considerably heavier than air, and the vapor thus forms a well-defined layer from the air lying above it in the degreasing apparatus.
  • the degreasing apparatus thus comprises a container having a vapor zone, a means for boiling solvent and to introduce the vapor produced into the vapor zone, and a transport means for moving the objects down into and up out of the vapor zone, and is characterized in that the transport means consists of a cylinder rotatable about a horizontal'shaft and arranged partly in the vapor zone, the cylinder being provided along its periphery with openings in which the objects to be degreased are placed, the cylinder being so dimensioned that it takes up substantially the entire cross sectional area of the container at the level corresponding to the upper surface of the vapor zone in order to reduce the losses of solvent from the vapor zone.
  • FIG. 1 shows the apparatus seen from the side, partly in section.
  • FIG. 2 shows the apparatus seen from above, partly in section.
  • the apparatus illustrated consists of a container 1 having a liquid zone 2, above this a vapor zone 3 and above this a zone 4 containing air and some solvent vapor.
  • the zone 4 communicates via a conduit 5 with a fan to prevent solvent vapor from coming out into the working premises.
  • Under the bottom 6 of the liquid zone is a boiling zone 7 in which liquid solvent is heated to boiling by means of heating elements 8.
  • the vapor produced passes through a pipe 12 to the vapor zone 3.
  • the solvent condensed on the cooling tubes 10 flows through a pipe 11 down to the liquid zone 2.
  • the surface 15 of the liquid zone is defined by a pipe 13 acting as an overflow through which the solvent flows down into the boiling zone 7.
  • the container 1 contains a cylinder 16 supported by a horizontal shaft 17 which can be rotated with the help of a motor via a gear '18.
  • the cylinder consists of two parallel Walls 20, 21 and side 'walls 22 which give the cylinder a twelve-sided circumference.
  • On each two side walls an opening 25 is arranged which is produced by making a rectangular opening in the Walls 20, 21, and joining these walls 20, 21 by means of walls 23, 24.
  • the openings 25 are thus limited by four walls.
  • the centre of the cylinder 16 is thus completely closed. So that temperature alterations shall not result in an over or under-pressure in the cylinder, the shaft 17 is provided with a longitudinal slit 26 which communicates through a channel 27 with the centre of the cylinder.
  • a conveyor 28 is arranged on a level with the bottom of the upper opening 25.
  • Buckets 29 are fed forwards on the transport path, containing the objects to be degreased.
  • the buckets are provided with lids and have walls of perforated sheet metal or netting.
  • the buckets can be inserted in the upper opening 25 with the help of a pusher 30 which is operated via a piston rod 31 by a hydraulic or pneumatic cylinder 32.
  • the buckets can be pushed back onto the conveyor with the help of a pusher 33 operating in the opposite direction which is operated via a piston rod 34 by a hydraulic or pneumatic cylinder 35.
  • the described apparatus operates in the following manner:
  • the cylinder 16 is turned 60.
  • the bucket with degreased objects in the upper opening 25 is pushed out onto the conveyor and a bucket with objects to be degreased is inserted in the opening 25.
  • solvent vapor condenses on the cold objects and the condensed solvent flows down into the liquid zone 2 carrying with it grease and oil from the objects.
  • the cylinder is again turned 60 the objects reach the liquid zone 2.
  • remnants of grease and oil, if any, are removed from the objects.
  • the temperature of the liquid is preferably kept 30-5 0 below the boiling point of the solvent.
  • the objects come up into the vapor zone 3 again.
  • the cylinder 16 covers practically the entire cross sectional area of the container 1 at the level where the interface 14 between the vapor and the air is situated.
  • the remaining small interface 14 does, of course, result in a small quantity of solvent vapor mixing with the air in the zone 4 and being drawn out through the fan, but this quantity is considerably less than if the entire 'i-ce cross sectional area of the container 1 had constituted an interface between the vapor and air.
  • the cylinder 16 For objects which are difficult to degrease it may be advisable to rotate the cylinder 16 in reverse so that the objects are treated alternately with liquid and vapor at least twice. It is simplest if the cylinder 16 is permitted to turn two steps in one direction and one step in the opposite direction. Of course, the number of openings 25 need not be six as shown in the drawings.
  • Apparatus for degreasing objects with vapor from a boiling solvent comprising a container having a vapor zone, means for boiling solvent to produce vapor and to introduce the vapor produced into the vapor zone, transport means for moving the objects down into and up out of the vapor zone, said transport means comprising a hollow and closed cylinder rotatable about a horizontal shaft and arranged partly in the vapor zone, said cylinder being provided along its periphery with openings in which the objects to be degreased are placed, said cylinder being so dimensioned that it takes up substantially the entire cross sectional area of the container at the level corresponding to the upper surface of the vapor zone in order to reduce the losses of solvent from the vapor zone.
  • An apparatus for degreasing objects comprising a container having a liquid solvent reservoir adjacent the bottom thereof, means for maintaining a substantially constant liquid level within said container, solvent boiling means adjacent said container for boiling a solvent and delivering a solvent vapor into said container above the solvent liquid level, level control means in said container above the liquid level of said solvent for maintaining a vapor zone above the liquid level with a substantially constant upper level in said vapor zone, a rotatable cylinder conveyor having a plurality of substantially spaced object receiving compartments located adjacent its circumferential periphery, means rotatably supporting said cylinder conveyor in said container for rotation about a substantially horizontal axis and at a location so that the lower portion of said cylinder conveyor and the object receiving compartment located therein passes through .the vapor zone and dips into the liquid solvent, said container being disposed in closely spaced relationship with said cylinder conveyor, and said cylinder conveyor occupying substantially the entire cross sectional area of said container at the level corresponding to the upper level of the vapor zone for reducing the losses of solvent from
  • level control means comprises a cooler located within said container above the solvent liquid level therein and the upper portion of said cooler being located substantially at the upper level of the vapor zone.
  • An apparatus as set forth in claim 4, wherein said object receiving compartments are separated from the interior of said cylinder conveyor and are opened at two opposite sides, said container having openings in two opposite sides in the upper portion thereof to provide access to the receiving compartment of said cylinder conveyor located in the uppermost position within said container, and pusher means for displacing objects from the receiving compartments when they are located in the uppermost position and for displacing the objects outwardly through the openings in said container.
  • said means for maintaining a substantially constant level of liquid solvent in said container includes an overflow conduit, said solvent boiling means comprising an extension of said container enclosing a boiling zone connected to said overflow conduit and including a vapor delivery conduit connected from said boiling zone into the container above the level of the liquid therein.
  • level control means includes a cooler located with its uppermost portion adjacent the upper level of the vapor zone and having a connection for leading condensed solvent hacking into the lower portion of said liquid solvent reservoir.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US837094A 1968-07-17 1969-06-27 Apparatus for degreasing objects with vapor from a boiling solvent Expired - Lifetime US3606896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE09821/68A SE328749B (xx) 1968-07-17 1968-07-17

Publications (1)

Publication Number Publication Date
US3606896A true US3606896A (en) 1971-09-21

Family

ID=20277594

Family Applications (1)

Application Number Title Priority Date Filing Date
US837094A Expired - Lifetime US3606896A (en) 1968-07-17 1969-06-27 Apparatus for degreasing objects with vapor from a boiling solvent

Country Status (12)

Country Link
US (1) US3606896A (xx)
AT (1) AT288816B (xx)
BE (1) BE735841A (xx)
CH (1) CH500020A (xx)
DE (1) DE1934126A1 (xx)
DK (1) DK134072B (xx)
FI (1) FI49848C (xx)
FR (1) FR2013122A1 (xx)
GB (1) GB1250675A (xx)
NL (1) NL6910721A (xx)
NO (1) NO125735B (xx)
SE (1) SE328749B (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815615A (en) * 1971-07-22 1974-06-11 Uddeholms Ab Degreasing apparatus and method
US4062437A (en) * 1974-09-16 1977-12-13 Otto Durr Conveyor equipment for surface treatment of workpieces
US4690732A (en) * 1985-01-09 1987-09-01 Combs Enterprises, Inc. Apparatus for shale oil retorting
US5048548A (en) * 1990-02-15 1991-09-17 E. I. Du Pont De Nemours And Company Vapor control system for vapor degreasing/defluxing equipment
US5142873A (en) * 1990-02-15 1992-09-01 E. I. Du Pont De Nemours And Company Vapor control system for vapor degreasing/defluxing equipment
US5378287A (en) * 1993-08-17 1995-01-03 Zenith Mfg. & Chemical Corporation Compact ultrasonic cleaning and drying machine and method
US5580394A (en) * 1993-07-12 1996-12-03 Airtronic, Inc. Method for cleaning industrial parts including sequential direct spray and immersion of the part
US20070181169A1 (en) * 2006-02-03 2007-08-09 Wallace Gregory M Parts immersion apparatus and method
US20100192984A1 (en) * 2009-02-05 2010-08-05 Valley Packline Solutions Bin washer device with rotating bin holder and method of washing bins
CN116397237A (zh) * 2023-06-05 2023-07-07 吉林建筑大学 一种汽车金属配件水性锌铝涂层的镀覆装置及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722295A (en) * 1985-04-29 1988-02-02 Ultraseal International Limited Article treating apparatus
US4753255A (en) * 1987-05-01 1988-06-28 Finishing Equipment, Inc. Closure apparatus for rotating open top container
CN107199194B (zh) * 2017-06-13 2019-09-03 厦门晟硕科技有限公司 一种节能环保的动力电池铝壳清洗干燥线

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815615A (en) * 1971-07-22 1974-06-11 Uddeholms Ab Degreasing apparatus and method
US4062437A (en) * 1974-09-16 1977-12-13 Otto Durr Conveyor equipment for surface treatment of workpieces
US4690732A (en) * 1985-01-09 1987-09-01 Combs Enterprises, Inc. Apparatus for shale oil retorting
US5048548A (en) * 1990-02-15 1991-09-17 E. I. Du Pont De Nemours And Company Vapor control system for vapor degreasing/defluxing equipment
US5142873A (en) * 1990-02-15 1992-09-01 E. I. Du Pont De Nemours And Company Vapor control system for vapor degreasing/defluxing equipment
US5580394A (en) * 1993-07-12 1996-12-03 Airtronic, Inc. Method for cleaning industrial parts including sequential direct spray and immersion of the part
US5378287A (en) * 1993-08-17 1995-01-03 Zenith Mfg. & Chemical Corporation Compact ultrasonic cleaning and drying machine and method
US20070181169A1 (en) * 2006-02-03 2007-08-09 Wallace Gregory M Parts immersion apparatus and method
US7946302B2 (en) 2006-02-03 2011-05-24 George Koch Sons Llc Parts immersion apparatus and method
US20100192984A1 (en) * 2009-02-05 2010-08-05 Valley Packline Solutions Bin washer device with rotating bin holder and method of washing bins
US8695612B2 (en) * 2009-02-05 2014-04-15 Valley Packline Solutions Bin washer device with rotating bin holder and method of washing bins
CN116397237A (zh) * 2023-06-05 2023-07-07 吉林建筑大学 一种汽车金属配件水性锌铝涂层的镀覆装置及方法
CN116397237B (zh) * 2023-06-05 2023-08-08 吉林建筑大学 一种汽车金属配件水性锌铝涂层的镀覆装置及方法

Also Published As

Publication number Publication date
SE328749B (xx) 1970-09-21
DK134072B (da) 1976-09-06
CH500020A (de) 1970-12-15
NO125735B (xx) 1972-10-23
GB1250675A (xx) 1971-10-20
AT288816B (de) 1971-03-25
FR2013122A1 (xx) 1970-03-27
BE735841A (xx) 1969-12-16
DE1934126A1 (de) 1970-01-22
NL6910721A (xx) 1970-01-20
FI49848C (fi) 1975-10-10
DK134072C (xx) 1977-02-07
FI49848B (xx) 1975-06-30

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