EP0353601A2 - Dispositif pour le nettoyage et le séchage des pièces métalliques - Google Patents

Dispositif pour le nettoyage et le séchage des pièces métalliques Download PDF

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Publication number
EP0353601A2
EP0353601A2 EP89113724A EP89113724A EP0353601A2 EP 0353601 A2 EP0353601 A2 EP 0353601A2 EP 89113724 A EP89113724 A EP 89113724A EP 89113724 A EP89113724 A EP 89113724A EP 0353601 A2 EP0353601 A2 EP 0353601A2
Authority
EP
European Patent Office
Prior art keywords
pieces
machine
disk
washing
drying
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.)
Granted
Application number
EP89113724A
Other languages
German (de)
English (en)
Other versions
EP0353601A3 (fr
EP0353601B1 (fr
Inventor
Mario Reni
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.)
Reni Cirillo SRL
Original Assignee
Reni Cirillo SRL
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 Reni Cirillo SRL filed Critical Reni Cirillo SRL
Publication of EP0353601A2 publication Critical patent/EP0353601A2/fr
Publication of EP0353601A3 publication Critical patent/EP0353601A3/fr
Application granted granted Critical
Publication of EP0353601B1 publication Critical patent/EP0353601B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/30—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work

Definitions

  • the present invention relates to a machine for the washing and drying of metal pieces consisting of a metal disk turning around a support which keeps it inclined from 15 to 45 degrees in respect of the vertical; the central part of said disk consisting of a cylindrical drum while the outer, coaxial ring is divided into sections separated by radial partitions; during the rotatory movement of the disk, the lowest sector is plunged into a tank containing a washing liquid while the highest one comes to be connected with a hot air system which allows the pieces contained in the said sector to be dried.
  • the finishing processes are effected by using water solutions and/or suspensions of various chemical compounds with detergent, pickling, abrasive or colouring action and they must, therefore, always be completed with a washing and drying cycle of the finished pieces.
  • the washing cycle carried out with a liquid, which normally is water with the possible addition of a dewatering agent which make water flow more easily on the wet surfaces of the pieces, must always be followed by a drying cycle of the washed pieces before these are packed for despatch or submitted to subsequent terminal processes such as painting or punching.
  • the water in fact, tends to adhere to the surface of the metal pieces in the form of small drops which may leave calcareous residue (if normal water is used for the final wash) or stains, but in any case the drops favour surface oxidation of the pieces if these are made from metals or from alloys subject to oxidation.
  • the system which uses solid absorbing material, broken down into small particles, such as wood sawdust or other synthetic and natural materials. These materials have the power to absorb a great quantity of water in proportion to their own weight and, furthermore, they exercise a very slight abrasive action on the surface of the pieces processed, without altering their finish but, on the contrary, improving their polish.
  • One of the problems connected with the driers using absorbing material is represented by the fact that the absorbing material is likely to get stuck into the small holes and the grooves of the pieces.
  • the machine according to the present invention consists of:
  • the rim rotating around the central drum is endowed with either continuous or intermittent motion according to the type and the quantity of the pieces fed into the rim sectors.
  • the rim makes from 20 to 60 rounds per hour.
  • the number of sectors of the rim is between 6 and 18.
  • a further advantage of the machine of the present invention is that the motion of the rotating rim causes the pieces contained in the sectors to be moved, each of said sectors performing a rotational movement over the 180 degrees. Said rotation causes the pieces either to be turned over or to roll one on the other, according to the number of pieces contained in each sector, and thus promoting the draining of the liquid which is possibly present in the turned upwards cavities of the pieces.
  • the particular inclination of the disk make certain the liquid to be drained and allows its recovering into the tank during the progress of the rim sectors from the exit from the tank and the injection of the hot air, without having the upper pieces dripping on the lower ones, which would certainly occur if the disk was fitted in a vertical position.
  • the inclination of the fixed disk allows pieces to be unloaded when the sector containing them reaches the proper hole of the fixed disk.
  • Pieces are unloaded by gravity without falling or knocking against each other, which might damage their surfaces and compromise the finish obtained throught the previous treatment.
  • the angle between the pieces unloading hole and the hot air suction hole is comprised between 20 and 60 degrees.
  • FIG. 1 shows a vertical section of the machine.
  • a metal disk 2 is fixed to the basement 1 by means of supports 4 with an inclination of 30 degrees in respect of the vertical.
  • the rotatory part of the machine is mounted on the fixed disk 2 by means of ball bearings, which consists of a rim 10 rotating around a cylindrical drum 11 fixed to the metal disk 2.
  • Rim 10 is divided into twelve sectors having the same size and separated by radial partitions (not shown in the figure).
  • the upper section of drum 11, adjoining the hot air supply area from the heating system 12, consist of a grate which allows the passage of the air and of the liquid but holds back the pieces.
  • the lower part of the disk 2 is plunged in a tank 5 containing the washing liquid.
  • the level of said liquid is kept at a height such as to completely cover the lowest sector of the rim 10.
  • the upper part of the disk 2 is provided with an opening connected with a chute 13 for the unloading of the metal pieces contained into the sector of rim which happens to reach that position.
  • the grate of the central drum which enables the passage of the hot air flow is situated 30 degrees far from the pieces unloading chute and is connected with suction duct 3 for the air fed to the machine through the heating system 12.
  • Pieces to be washed are fed to the machine through the chute 9 and fill the sector of the rim 10 plunged into tank 5.
  • Rim 10 rotates around its axis 7 driven by a motor (not shown in the figure) and, as a result of the rotation, the lowest sector is progressively moved upward with its content of pieces. The following sector will now come to be situated in the lowest position and thus be loaded by other pieces fed to the machine and so on. Owing to the rotation of the rim 10, the sector charged with pieces will emerge from the washing liquid and said liquid will flow back into tank 5 by passing through the interstices existing between the fixed disk, the central drum and the radial partitions.
  • the supporting wall of the heating system 12 forms an enclosed chamber with sector 8 which is situated in the highest position of the fixed disk 2 and is connected with the grate of the central drum 11 and with air duct 3.
  • the hot air is fed into sector 8 to dry the pieces.
  • the hot air is suctioned by a fan (not shown in the figure) which is connected with duct 3.
  • the fed air is coming from the heating system 12.
  • the sector 8 forms a quasi-enclosed area which, owing to the suction exerted through the duct 3, happens to be an area of slight depression which favours the elimination of the liquid or of the residual humidity of the pieces contained in said sector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP89113724A 1988-08-01 1989-07-25 Dispositif pour le nettoyage et le séchage des pièces métalliques Expired - Lifetime EP0353601B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8883654A IT1225613B (it) 1988-08-01 1988-08-01 Macchina per il lavaggio e l'asciugatura di pezzi metallici
IT8365488 1988-08-01

Publications (3)

Publication Number Publication Date
EP0353601A2 true EP0353601A2 (fr) 1990-02-07
EP0353601A3 EP0353601A3 (fr) 1991-07-17
EP0353601B1 EP0353601B1 (fr) 1994-11-09

Family

ID=11323672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113724A Expired - Lifetime EP0353601B1 (fr) 1988-08-01 1989-07-25 Dispositif pour le nettoyage et le séchage des pièces métalliques

Country Status (5)

Country Link
EP (1) EP0353601B1 (fr)
AT (1) ATE113872T1 (fr)
DE (1) DE68919293T2 (fr)
ES (1) ES2066810T3 (fr)
IT (1) IT1225613B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426045A1 (fr) * 1989-10-30 1991-05-08 RENI CIRILLO S.r.l. Machine vibrante pour le finissage, le lavage et le séchage de pièces métalliques
WO2001068280A1 (fr) * 2000-03-16 2001-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif pour nettoyer et secher des pieces

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1467746A (fr) * 1966-02-09 1967-01-27 Appareil de trempage automatique dans un bain de traitement
GB1446083A (en) * 1973-11-20 1976-08-11 Ici Ltd Cleaning apparatus
WO1979000244A1 (fr) * 1977-10-29 1979-05-03 R Steimel Procede et dispositif pour enlever l'huile, ecurer, laver et secher notamment des objets avec des cavites
GB2059754A (en) * 1979-10-04 1981-04-29 Corval Machinery Ltd Washing moulded plastics articles
GB2181205A (en) * 1985-09-30 1987-04-15 Newsmith Stainless Limited Tray-cleaning apparatus
DE3543892A1 (de) * 1985-12-12 1987-06-19 Aluplast Gmbh Verfahren und vorrichtung zum reinigen von folienabfaellen
FR2597368A1 (fr) * 1986-04-17 1987-10-23 Guilbaud Jean Pierre Dispositif pour le traitement de produits divers par immersion dans des liquides puis essorage.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1467746A (fr) * 1966-02-09 1967-01-27 Appareil de trempage automatique dans un bain de traitement
GB1446083A (en) * 1973-11-20 1976-08-11 Ici Ltd Cleaning apparatus
WO1979000244A1 (fr) * 1977-10-29 1979-05-03 R Steimel Procede et dispositif pour enlever l'huile, ecurer, laver et secher notamment des objets avec des cavites
GB2059754A (en) * 1979-10-04 1981-04-29 Corval Machinery Ltd Washing moulded plastics articles
GB2181205A (en) * 1985-09-30 1987-04-15 Newsmith Stainless Limited Tray-cleaning apparatus
DE3543892A1 (de) * 1985-12-12 1987-06-19 Aluplast Gmbh Verfahren und vorrichtung zum reinigen von folienabfaellen
FR2597368A1 (fr) * 1986-04-17 1987-10-23 Guilbaud Jean Pierre Dispositif pour le traitement de produits divers par immersion dans des liquides puis essorage.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426045A1 (fr) * 1989-10-30 1991-05-08 RENI CIRILLO S.r.l. Machine vibrante pour le finissage, le lavage et le séchage de pièces métalliques
WO2001068280A1 (fr) * 2000-03-16 2001-09-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dispositif pour nettoyer et secher des pieces

Also Published As

Publication number Publication date
ATE113872T1 (de) 1994-11-15
DE68919293T2 (de) 1995-06-22
IT1225613B (it) 1990-11-22
DE68919293D1 (de) 1994-12-15
ES2066810T3 (es) 1995-03-16
EP0353601A3 (fr) 1991-07-17
EP0353601B1 (fr) 1994-11-09
IT8883654A0 (it) 1988-08-01

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