US3718147A - Installation for degreasing metal articles - Google Patents

Installation for degreasing metal articles Download PDF

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Publication number
US3718147A
US3718147A US00115810A US3718147DA US3718147A US 3718147 A US3718147 A US 3718147A US 00115810 A US00115810 A US 00115810A US 3718147D A US3718147D A US 3718147DA US 3718147 A US3718147 A US 3718147A
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US
United States
Prior art keywords
chamber
solvent
spraying
final
chambers
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
US00115810A
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English (en)
Inventor
R Laroche
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.)
Alcan Holdings Switzerland AG
Baldwin Piano and Organ Co
Original Assignee
Alusuisse Holdings AG
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
Priority claimed from CH222170A external-priority patent/CH520210A/fr
Application filed by Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Application granted granted Critical
Publication of US3718147A publication Critical patent/US3718147A/en
Assigned to BALDWIN PIANO & ORGAN COMPANY reassignment BALDWIN PIANO & ORGAN COMPANY CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BPO ACQUISTION CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/04—Apparatus

Definitions

  • An installation for degreasing metal articles comprises means for driving articles to be cleaned successively through at least two chambers comprising heating means in their lower parts, the first chamber being a condensation chamber, and the other chamber(s) each comprising means for spraying a solvent.
  • Condensers are located at the inlet to the first chamber and the outlet to the last chamber.
  • Means for regenerating and recycling solvent comprise three circuitsza first circuit for each spraying chamber comprising means for pumping solvent from the bottom of the chamber to feed the spraying means a second circuit formed by overflows between adjacent chambers to enable a flow of solvent from the final chamber to the first chamber, and a first return conduit connecting the first chamber and the final chamber, said first return conduit comprising a distiller comprising level compensating means by the external supply of solvent and being adapted to deliver distilled solvent to the final chamber; and a third circuit comprising means for recuperating condensation from the condensers and second return conduits for the delivery of condensation from the recuperation means to the final chamber the second circuit having a by-pass formed by at least one spraying nozzle at the outlet of each chamber except for the final chamber, each last mentioned spraying nozzle being fed by solvent taken from the adjacent following chamber.
  • the invention concerns an installation for degreasing metallic articles, for example metal boxes, cans or other containers after manufacture and prior to coating them with a protective layer.
  • Washing with soda in addition to the drawback of being relatively inefficient for dissolving fat has the drawback of attacking the metal, especially aluminum in this case, there is formation of aluminate, then precipitation of hydroxide during rinsing with water.
  • This hydroxide remains on the walls of the container and is subsequently covered by the protective layer, for example of varnish.
  • the protective layer for example of varnish.
  • the aluminum hydroxide decomposes into alumina and water, the latter causing bubbles that can rupture the layer of varnish.
  • the residue of alumina decreases the adherence of the varnish.
  • the present invention aims to further improve these installations.
  • an installation for degreasing metal articles comprising means for driving articles to be cleaned successively through at least two chambers, a first chamber being a condensation chamber and the succeeding or following chamber or chambers being spraying chambers with means for spraying a solvent therein an inlet at the upper part of the first chamber having a first condenser therein and an outlet at the upper part of the final chamber having a second condenser heating means in the lower part of the chamber and means for regenerating and recycling solvent comprising three circuits for the solvent a first circuit for each spraying chamber comprising means for pumping solvent from the bottom of the chamber to feed the spraying means a second circuit formed by overflow passageways between adjacent chambers to enable a flow of solvent from the final chamber to the first chamber, and a first return conduit connecting the first chamber and the final chamber, said first return conduit including a distiller having level compensating means for the external supply of solvent and being adapted to deliver distilled solvent to the final chamber and a third circuit comprising means for recuperating condensation
  • a generally rectangular shaped tank 1 comprises two inner walls 113 and 1C between two outer walls 1A and 1D so as to define three chambers 2, 3 and 4.
  • Inner walls 1B and 1C are of lesser height than outer walls 1A and II).
  • cover 5 On the tank 1 is mounted a cover 5, also of generally rectangular shape comprising outer walls 5A, 5D and inner walls 5B and 5C.
  • the inner walls 5B and 5C of cover 5 bear against the frontal and rear walls of the tank ll, not shown.
  • the wall 1A of the tank 1 is partially located between the walls 5A and 5B of the tank 5, and similarly for wall 1D in relation to walls 5C and 5D.
  • Rectangular coiled condensers 6 and 7 are located respectively between the walls 1A and SE at the upper part of the inlet to chamber 2, and 5C and ID at the upper part of the outlet to chamber 4 so as to surround the inlet and outlet to the chambers 2 and 4 respectively.
  • Gutter-shaped channels 8 and 9 are located respectively under the condensers 6 and 7 and are adapted to receive condensation from these condensers.
  • Spraying heads 10 are located on the side walls of the chambers 3 and 4. Two pumps 15, each connected to one spraying chamber individually feed the spraying heads of the latter this constitues the first solvent circuit for each spraying chamber.
  • Super-heated oil or water operated heat exchangers 11 are located at the lower parts of each chamber 2, 3 and 4 to ensure evaporation of the solvent. These heat exchangers 11 intercommunicate with one another by orifices 12 acting as overflow means.
  • the orifice 12 between chambers 3 and 4 is at a slightly higher level than the orifice 12 between the chamber 2 and 3 and an outlet conduit 17 in the chamber 2 is slightly lower than the orifice 12 between the chambers 2 and 3.
  • the chamber 2 is connected by conduit 17 to a distillation apparatus 18 a conduit 19 evacuates the product of distillation collected in distillation apparatus 18 and delivers it into the chamber 4.
  • Distillation apparatus 18 contains a certain quantity of liquid solvent the level of which is kept constant by an external feed device controlled by a conventional constant head device, well known to those skilled in the art and therefore not shown. This constitutes the said second circuit for the solvent.
  • An endless chain 20 mounted on guide pulleys 21 is driven around a path through the chambers 2, 3 and 4 of the installation.
  • each part of this path between two rollers is slightly inclined in relation to the vertical, in such a way as to traverse the zones surrounded by the condensers 6 and 7 and to pass near the spraying heads 10.
  • Metallic rods 25 are fixed laterally of and perpendicular to the links of the chain and serve as supports for containers W, for example cans, to be cleaned by the removal of grease.
  • suction conduits 22 On walls A and 5D are connected suction conduits 22.
  • the installation also comprises a spraying nozzle 23 at the outlet of chamber 2, fed by solvent pumped from the chamber 3 and used as a rinsing nozzle for cans to be cleaned leaving the chamber 2, and at least one spraying nozzle 24 fed by the solvent taken up from the chamber 4 for rinsing cans leaving the chamber 3.
  • These spraying nozzles 23, 24 therefore form a by-pass avoiding the orifices 12 of the second solvent circuit.
  • the described installation operates as follows
  • the condensation chamber 2 and the spraying chambers 3 and 4 are filled with solvent, for example trichlorethylene or perchlorethylene, up to the levels of the overflow orifices 12.
  • This solvent is heated up to its boiling point by the heat exchangers 11.
  • the pumps 15 come to action and solvent discharged by the pumps 15 is atomized by the spraying heads in the chambers 3 and 4.
  • the first chamber 2 is simply filled with solvent vapor.
  • the atmosphere in the different chambers being saturated with solvent vapor, this spraying is not accompanied by any aerosol formation.
  • the solvent vapor condenses on the condensers 6 and 7. At the level of these condensers, a vapor barrier is set up separating the internal part of the installation from the exterior. Nevertheless should any vapor escape, the suction conducts 22 enable removal of solvent-laden air, for recovery of the solvent.
  • the described three chamber installation is equivalent to a five chamber installation (or Zn-l, where n is the actual member of chambers), since the first chamber is used both as a condensation chamber and a rinsing chamber and in the second chamber spraying is carried out by means of solvent taken up from this chamber and rinsing with solvent taken up from the third chamber.
  • An installation for degreasing metal articles comprising means for driving articles to be cleaned successively through at least two chambers, a first chamber being a condensation chamber and the other or succeeding chambers being spraying chambers and having means for spraying a solvent therein; an inlet at the upper part of the first chamber having a first condenser and an outlet at the upper part of the final chamber having a second condenser; heating means in the lower part of each of said chambers; and means for regenerating and recycling solvent comprising three circuits for said solvent; a first circuit for each spraying chamber comprising means for pumping solvent from the bottom of the spraying chamber to feed the spraying means; a second circuit formed by overflow connections between adjacent chambers to enable a flow of solvent from the final chamber to the first chamber, and a first return conduit connecting the first chamber and the final chamber, said first return conduit including a distiller having a level compensating means for the external supply of solvent and being adapted to deliver distilled solvent to the final chamber; and a third circuit comprising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
US00115810A 1970-02-17 1971-02-16 Installation for degreasing metal articles Expired - Lifetime US3718147A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH222170A CH520210A (fr) 1970-02-17 1970-02-17 Machine à dégraisser les récipients
CH147671 1971-02-02

Publications (1)

Publication Number Publication Date
US3718147A true US3718147A (en) 1973-02-27

Family

ID=25687764

Family Applications (1)

Application Number Title Priority Date Filing Date
US00115810A Expired - Lifetime US3718147A (en) 1970-02-17 1971-02-16 Installation for degreasing metal articles

Country Status (11)

Country Link
US (1) US3718147A (no)
JP (1) JPS563433B1 (no)
BE (1) BE762956A (no)
DE (1) DE2106446C3 (no)
DK (1) DK136835B (no)
ES (1) ES388372A1 (no)
FR (1) FR2078606A5 (no)
GB (1) GB1303000A (no)
NL (2) NL147791B (no)
NO (1) NO130018B (no)
SE (1) SE359323B (no)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906895A (en) * 1971-12-24 1975-09-23 Nippon Paint Co Ltd Spray type apparatus for treatment of metal surface
US4648417A (en) * 1985-02-11 1987-03-10 Entek Manufacturing Inc. Apparatus for degreasing a continuous sheet of thin material
US4813440A (en) * 1985-02-11 1989-03-21 Entek Manufacturing Inc. Apparatus for degreasing a continuous sheet of thin material
US4886082A (en) * 1986-07-02 1989-12-12 Brother Kogyo Kabushiki Kaisha Cleaning apparatus
US5246501A (en) * 1990-12-07 1993-09-21 Alliedsignal Inc. Flash drying treatment of solvent from workpieces
US5308452A (en) * 1992-01-31 1994-05-03 Progressive Recovery, Inc. Photopolymer washout fluid solvent distillation apparatus and method
US5349974A (en) * 1994-03-04 1994-09-27 Mansur Industries Inc. General parts washer
US5549128A (en) * 1995-02-24 1996-08-27 Mansur Industries Inc. General parts washer
US5669401A (en) * 1995-09-22 1997-09-23 Mansur Industries Inc. General washer apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2912387C3 (de) * 1979-03-29 1986-01-09 LPW-Reinigungstechnik GmbH, 7024 Filderstadt Vorrichtung zur Entfettung und/oder Reinigung von für eine Oberflächenbehandlung bestimmten Gegenständen
DE3814870C1 (no) * 1988-05-02 1989-11-16 Helmut Walter 8900 Augsburg De Leicht

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907875A (en) * 1929-05-10 1933-05-09 Carrier Engineering Co Ltd Method and apparatus for cleaning articles
US2028759A (en) * 1931-09-30 1936-01-28 James H Bell Treatment with solvents
US2270642A (en) * 1935-02-08 1942-01-20 Budd Induction Heating Inc Cleaning and degreasing system
US2369050A (en) * 1942-03-18 1945-02-06 Swiss Firm Of Fr Sauter A G Fa Plant for cleaning articles smeared with oil, greases, or the like
US2541901A (en) * 1944-10-26 1951-02-13 Metalwash Machinery Co Pickling of aluminum
US3085948A (en) * 1961-07-17 1963-04-16 Detrex Chem Ind Continuous degreaser
US3120853A (en) * 1963-04-02 1964-02-11 Detrex Chem Ind Apparatus for detergent-solvent degreasing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1907875A (en) * 1929-05-10 1933-05-09 Carrier Engineering Co Ltd Method and apparatus for cleaning articles
US2028759A (en) * 1931-09-30 1936-01-28 James H Bell Treatment with solvents
US2270642A (en) * 1935-02-08 1942-01-20 Budd Induction Heating Inc Cleaning and degreasing system
US2369050A (en) * 1942-03-18 1945-02-06 Swiss Firm Of Fr Sauter A G Fa Plant for cleaning articles smeared with oil, greases, or the like
US2541901A (en) * 1944-10-26 1951-02-13 Metalwash Machinery Co Pickling of aluminum
US3085948A (en) * 1961-07-17 1963-04-16 Detrex Chem Ind Continuous degreaser
US3120853A (en) * 1963-04-02 1964-02-11 Detrex Chem Ind Apparatus for detergent-solvent degreasing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906895A (en) * 1971-12-24 1975-09-23 Nippon Paint Co Ltd Spray type apparatus for treatment of metal surface
US4648417A (en) * 1985-02-11 1987-03-10 Entek Manufacturing Inc. Apparatus for degreasing a continuous sheet of thin material
US4813440A (en) * 1985-02-11 1989-03-21 Entek Manufacturing Inc. Apparatus for degreasing a continuous sheet of thin material
US4886082A (en) * 1986-07-02 1989-12-12 Brother Kogyo Kabushiki Kaisha Cleaning apparatus
US5246501A (en) * 1990-12-07 1993-09-21 Alliedsignal Inc. Flash drying treatment of solvent from workpieces
US5308452A (en) * 1992-01-31 1994-05-03 Progressive Recovery, Inc. Photopolymer washout fluid solvent distillation apparatus and method
US6251228B1 (en) 1992-01-31 2001-06-26 Daniel B. Marks Photopolymer washout fluid solvent distillation apparatus and method
US5349974A (en) * 1994-03-04 1994-09-27 Mansur Industries Inc. General parts washer
WO1995023657A1 (en) * 1994-03-04 1995-09-08 Mansur Industries Inc. General parts washer
US5549128A (en) * 1995-02-24 1996-08-27 Mansur Industries Inc. General parts washer
US5669401A (en) * 1995-09-22 1997-09-23 Mansur Industries Inc. General washer apparatus

Also Published As

Publication number Publication date
NL147791B (nl) 1975-11-17
BE762956A (fr) 1971-07-16
ES388372A1 (es) 1974-01-01
FR2078606A5 (no) 1971-11-05
DK136835C (no) 1978-05-08
DE2106446A1 (de) 1971-08-26
NL7102129A (no) 1971-08-19
DK136835B (da) 1977-11-28
JPS563433B1 (no) 1981-01-24
NL147791C (no)
NO130018B (no) 1974-06-24
SE359323B (no) 1973-08-27
DE2106446B2 (de) 1977-12-15
DE2106446C3 (de) 1979-09-27
GB1303000A (no) 1973-01-10

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AS Assignment

Owner name: BALDWIN PIANO & ORGAN COMPANY

Free format text: CHANGE OF NAME;ASSIGNOR:BPO ACQUISTION CORP.;REEL/FRAME:004473/0501

Effective date: 19840612