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US3783560A - Apparatus for washing packing cases - Google Patents

Apparatus for washing packing cases Download PDF

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Publication number
US3783560A
US3783560A US00157090A US3783560DA US3783560A US 3783560 A US3783560 A US 3783560A US 00157090 A US00157090 A US 00157090A US 3783560D A US3783560D A US 3783560DA US 3783560 A US3783560 A US 3783560A
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US
United States
Prior art keywords
grate
receptacle
chute
sand
solution
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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
US00157090A
Inventor
G Casapopol
N Iaru
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.)
INTREPRINDEREA JUDETEANA DE MORARIT SI PANIFICALIE RU
JUDETEANA DE MORARIT SI PANIFI
Original Assignee
JUDETEANA DE MORARIT SI PANIFI
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Publication date
Application filed by JUDETEANA DE MORARIT SI PANIFI filed Critical JUDETEANA DE MORARIT SI PANIFI
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Publication of US3783560A publication Critical patent/US3783560A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/0861—Cleaning crates, boxes or the like
    • 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

  • a rotating shaft carrying a plurality of axially-spaced blades is provided in the receptacle below the grate for agitating the solution and cleaning the cases which are immersed therein. From the grate each case is pushed by the following case up a second chute and onto a second grate above which a plurality of nozzles are provided which spray the washed crate with recycled rinsev water from which the sand has been separated, with the further upstream spray ejecting clean fresh water.
  • the present invention relates to an apparatus for continuously washing packing cases, especially those of plastic or synthetic-resin material used for stocking and carrying bakery products.
  • the known devices have the disadvantages of washing incompletely, since the liquid is not sprayed on the whole surface of the case, mechanical means for detaching the insoluble impurities are lacking, and they are of a relatively complicated structure since conveyor belts and many diffuser pipes and pumps for spraying the liquid are needed.
  • Another object is the provision of such an apparatus which carries out complete cleaning while having a minimum number of trouble-prone parts.
  • the apparatus avoids these disadvantages in that, in order to more vigorously wash the cases and to simplify the structure, it includes a device to guide the cases comprising a downwardly sloping chute or trough above which there is a bladed shaft perpendicular to the transport direction and beltdriven by an electric motor.
  • the guiding device also has a horizontal grate immersed in a vessel or receptacle containing an aqueous detergent solution and a sand suspension. Below the grate there is a bladed shaft driven by an electric motor for agitating the solution.
  • the guiding device further includes a second sloping trough or chute directed upwardly, and a second grate above which there are two pipes formed with nozzles as diffusers and connectedby means of a pipe and a pump to a second reservoir.
  • a third pipe fed with fresh water is provided at the very end of the transport path and below the grate there is a downwardly sloping trough emptying the rinse water into a third reservoir connected at the bottom with the second one by means of a sand separator and having at its upper part a slit for removal of thefoam resulting from washing and the liquid excess.
  • the apparatus comprises a guiding device for the cases 1 including a downwardly sloping trough 2 above which there is a bladed shaft 3 belt-driven by an electric motor.
  • the downwardly sloping trough 2 runs onto a grate 5 which is below theliquid level of a reservoir 6 containing a 2 percent aqueous solution of trisodium phosphate and 5 percent suspended sand.
  • a shaft 7 is parallel to the grate 5 and has radial axially spaced blades 8 so I that when they are rotated by the electric motor the sand abrasively cleans the containers 1. Without the rotating shaft 7 and its radially extending vanes 8, the sand would quickly settle to the bottom of the elongated receptacle 6 under the grate 5 and will not serve to clean the cases 1.
  • the cases or containers 1 are made of a light synthetic-resin material such as polystyrene so that they tend to float.
  • the guide path is enclosed, especially above the grate 5, which extends substantially the full length of the receptacle'6, to force the cases 1 under the level of the solution and retain then thus immersed as the following cases push them along the guide path.
  • the grate is continued as a second upwardly extending trough or chute 10 and a second horizontal grate 11.
  • two pipes 12 and 13 are provided with diffuser nozzles and are connected by pipe and pump to the reservoir 16 which is in communication through a sand separator with another reservoir 17 provided at its upper part 18 with an overflow opening or slit 19 for the removal of the foam resulting from washing and the liquid excess.
  • a third pipe 20 also provided with inwardly directed diffuser nozzles and fed with fresh water and below it is a trough 21' directed into the reservoir.
  • the cases are laid on the downwardly extending trough 2 whence they are moved in the transport direction A along the guiding device 2,5,10,11 gravitationally and also owing to the blade action of blades on the'shaft 3.
  • the cases 1 While passingthrough the reserovir'6, the cases 1 come into contact with the liquid stirred by the blades 8 of the shaft 7 so that the soluble impurities are dissolved by the water and detergent and the insoluble impurities are removed by the abrasive action of the suspended sand; particles.
  • the cases 1 are sprayed with the recycled water from pipes 12 and 13 and the fresh water from pipe 20.
  • the water flows along the trough and into the reservoir 18 where the liquid excess and the impurities containing foam pass out through the slit and the water filtered in the sand separator passes into the reservoir 16 whence it is pumped by pump 15 through pipe 14 and into diffuser pipes 12 and 13.
  • the apparatus according to this invention has the advantage of carrying out a more vigorous washing owing to the immersion and the association of the effects of dissolving by detergent solution and of the mechanical activity of the suspended sand particles; moreover, the apparatus has a simple structure since there are no conveyor belts and only a few diffuser pipes.
  • a first chute extending downwardly into said receptacle at one side thereof;
  • a grate below the level of said solution and extending across said receptacle from said first chute to the other side of said receptacle;
  • rinsing means downstream of said receptacle and having a plurality of inwardly directed fluid jets surrounding said second chute for spraying said container with rinse water and rinsing the detergent solution and sand from said container.
  • said second chute includes a second horizontal grate externally of said receptacle, said rinsing means including a plurality of diffuser pipes arranged above said second grate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

An apparatus for washing packing cases and delivery trays, e.g., for baked goods has a downwardly sloping trough leading onto a grate in a receptacle filled with a detergent solution in which sand is suspended. A rotating shaft carrying a plurality of axially-spaced blades is provided in the receptacle below the grate for agitating the solution and cleaning the cases which are immersed therein. From the grate each case is pushed by the following case up a second chute and onto a second grate above which a plurality of nozzles are provided which spray the washed crate with recycled rinse water from which the sand has been separated, with the further upstream spray ejecting clean fresh water.

Description

United States Patent [191 Casapopol et al.
CASES Assignee:
Filed;
APPARATUS FOR WASHING PACKING Inventors: Gherasim Casapopol; Napoleon Iaru, both of Galati, Romania Intreprinderea Judeteana De Morarit Si Panificalie, Galati, Romania June 28, 1971 Appl. No.: 157,090
US. Cl 51/5, 51/18, 51/323 Int. Cl B24b 31/00 Field of Search 51/5, 7, 16,17,
References Cited UNITED STATES PATENTS Meurer 51/7 X wettlauferw 51/7 UX Behnke et al.... 51/7 UX Fossen et al. 51/163 X Jan. 8, 1974 8/1967 Moore 51/163 x Primary ExaminerDonald G. Kelly Assistant ExaminerHoward N. Goldberg Attorney-Karl F. Ross [5 7] ABSTRACT An apparatus for washing packing cases and delivery trays, e.g., for baked goods has a downwardly sloping trough leading onto a grate in a receptacle filled with a detergent solution in which sand is suspended. A rotating shaft carrying a plurality of axially-spaced blades is provided in the receptacle below the grate for agitating the solution and cleaning the cases which are immersed therein. From the grate each case is pushed by the following case up a second chute and onto a second grate above which a plurality of nozzles are provided which spray the washed crate with recycled rinsev water from which the sand has been separated, with the further upstream spray ejecting clean fresh water.
5 Claims, 1 Drawing Figure 1 APPARATUS FOR WASHING PACKING CASES FIELD OF THE INVENTION The present invention relates to an apparatus for continuously washing packing cases, especially those of plastic or synthetic-resin material used for stocking and carrying bakery products.
BACKGROUND OF THE INVENTION The known devices have the disadvantages of washing incompletely, since the liquid is not sprayed on the whole surface of the case, mechanical means for detaching the insoluble impurities are lacking, and they are of a relatively complicated structure since conveyor belts and many diffuser pipes and pumps for spraying the liquid are needed.
OBJECTS OF THE INVENTION It is, therefore, an object of the present invention to provide an improved apparatus for washing packing cases or similar reusable containers.
Another object is the provision of such an apparatus which carries out complete cleaning while having a minimum number of trouble-prone parts.
SUMMARY OF THE INVENTION The apparatus according to the invention avoids these disadvantages in that, in order to more vigorously wash the cases and to simplify the structure, it includes a device to guide the cases comprising a downwardly sloping chute or trough above which there is a bladed shaft perpendicular to the transport direction and beltdriven by an electric motor. The guiding device also has a horizontal grate immersed in a vessel or receptacle containing an aqueous detergent solution and a sand suspension. Below the grate there is a bladed shaft driven by an electric motor for agitating the solution. The guiding device further includes a second sloping trough or chute directed upwardly, and a second grate above which there are two pipes formed with nozzles as diffusers and connectedby means of a pipe and a pump to a second reservoir. A third pipe fed with fresh water is provided at the very end of the transport path and below the grate there is a downwardly sloping trough emptying the rinse water into a third reservoir connected at the bottom with the second one by means of a sand separator and having at its upper part a slit for removal of thefoam resulting from washing and the liquid excess.
DESCRIPTION OF THE DRAWING An example of an apparatus in accordance with the invention is explained below with reference to the enclosed drawing whose sole FIGURE shows a longitudinal section through the washing apparatus according to the present invention.
SPECIFIC DESCRIPTION The apparatus according to the invention comprises a guiding device for the cases 1 including a downwardly sloping trough 2 above which there is a bladed shaft 3 belt-driven by an electric motor. The downwardly sloping trough 2 runs onto a grate 5 which is below theliquid level of a reservoir 6 containing a 2 percent aqueous solution of trisodium phosphate and 5 percent suspended sand. I
At the bottom of the reservoir 6, a shaft 7 is parallel to the grate 5 and has radial axially spaced blades 8 so I that when they are rotated by the electric motor the sand abrasively cleans the containers 1. Without the rotating shaft 7 and its radially extending vanes 8, the sand would quickly settle to the bottom of the elongated receptacle 6 under the grate 5 and will not serve to clean the cases 1.
The cases or containers 1 are made of a light synthetic-resin material such as polystyrene so that they tend to float. The guide path is enclosed, especially above the grate 5, which extends substantially the full length of the receptacle'6, to force the cases 1 under the level of the solution and retain then thus immersed as the following cases push them along the guide path.
The grate is continued as a second upwardly extending trough or chute 10 and a second horizontal grate 11. Above the grate 11 two pipes 12 and 13 are provided with diffuser nozzles and are connected by pipe and pump to the reservoir 16 which is in communication through a sand separator with another reservoir 17 provided at its upper part 18 with an overflow opening or slit 19 for the removal of the foam resulting from washing and the liquid excess. Above the grate is a third pipe 20, also provided with inwardly directed diffuser nozzles and fed with fresh water and below it is a trough 21' directed into the reservoir.
For washing, the cases are laid on the downwardly extending trough 2 whence they are moved in the transport direction A along the guiding device 2,5,10,11 gravitationally and also owing to the blade action of blades on the'shaft 3. While passingthrough the reserovir'6, the cases 1 come into contact with the liquid stirred by the blades 8 of the shaft 7 so that the soluble impurities are dissolved by the water and detergent and the insoluble impurities are removed by the abrasive action of the suspended sand; particles. Above the grate 11 the cases 1 are sprayed with the recycled water from pipes 12 and 13 and the fresh water from pipe 20. After rinsing the cases 1, the water flows along the trough and into the reservoir 18 where the liquid excess and the impurities containing foam pass out through the slit and the water filtered in the sand separator passes into the reservoir 16 whence it is pumped by pump 15 through pipe 14 and into diffuser pipes 12 and 13.
In comparison with other known apparatus for case washing, the apparatus according to this invention has the advantage of carrying out a more vigorous washing owing to the immersion and the association of the effects of dissolving by detergent solution and of the mechanical activity of the suspended sand particles; moreover, the apparatus has a simple structure since there are no conveyor belts and only a few diffuser pipes.
We claim:
containers comprising:
an elongated receptacle containing sand suspended in an aqueous detergent solution;
a first chute extending downwardly into said receptacle at one side thereof;
a grate below the level of said solution and extending across said receptacle from said first chute to the other side of said receptacle;
a second chute extending upwardly out of said receptacle from said grate at said other side of said receptacle;
a member spaced about said grate in said receptacle for holding said containers below said level of said solution while said containers travel across said grate, said containers then passing up said second chute;
means including a shaft underlying said grate in said receptacle and provided for agitating said solution upon rotation of said shaft and thereby bringing said sand into abrasive contact with said container on said grate; and
rinsing means downstream of said receptacle and having a plurality of inwardly directed fluid jets surrounding said second chute for spraying said container with rinse water and rinsing the detergent solution and sand from said container.
2. The apparatus defined in claim 1 wherein said second chute includes a second horizontal grate externally of said receptacle, said rinsing means including a plurality of diffuser pipes arranged above said second grate.
3. The apparatus defined in claim 2, further comprising a reservoir below said second grate and pump means connected between said reservoir and said diffuser pipes for recycling rinse water.
4. The apparatus defined in claim 3, further comprising a sloping trough under said second grate, a second reservoir under said trough, and a sand separator between said reservoirs and forming a fluid communication path therebetween, said trough emptying into said second reservoir.
5. The apparatus defined in claim 4, further comprising a fresh-water-fed diffuser upstream of said diffuser pipes and spraying fresh water on said container on said second grate.

Claims (5)

1. An apparatus for washing a succession of floatable containers comprising: an elongated receptacle containing sand suspended in an aqueous detergent solution; a first chute extending downwardly into said receptacle at one side thereof; a grate below the level of said solution and extending across said receptacle from said first chute to the other side of said receptacle; a second chute extending upwardly out of said receptacle from said grate at said other side of said receptacle; a Member spaced about said grate in said receptacle for holding said containers below said level of said solution while said containers travel across said grate, said containers then passing up said second chute; means including a shaft underlying said grate in said receptacle and provided for agitating said solution upon rotation of said shaft and thereby bringing said sand into abrasive contact with said container on said grate; and rinsing means downstream of said receptacle and having a plurality of inwardly directed fluid jets surrounding said second chute for spraying said container with rinse water and rinsing the detergent solution and sand from said container.
2. The apparatus defined in claim 1 wherein said second chute includes a second horizontal grate externally of said receptacle, said rinsing means including a plurality of diffuser pipes arranged above said second grate.
3. The apparatus defined in claim 2, further comprising a reservoir below said second grate and pump means connected between said reservoir and said diffuser pipes for recycling rinse water.
4. The apparatus defined in claim 3, further comprising a sloping trough under said second grate, a second reservoir under said trough, and a sand separator between said reservoirs and forming a fluid communication path therebetween, said trough emptying into said second reservoir.
5. The apparatus defined in claim 4, further comprising a fresh-water-fed diffuser upstream of said diffuser pipes and spraying fresh water on said container on said second grate.
US00157090A 1971-06-28 1971-06-28 Apparatus for washing packing cases Expired - Lifetime US3783560A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413797A1 (en) * 1984-04-12 1985-11-28 Helmut 6950 Mosbach Silberzahn Device for transporting boxes or the like
DE3422840A1 (en) * 1984-06-20 1986-01-09 Silberzahn, Helmut, 6950 Mosbach Apparatus for transporting boxes or the like
DE3438691A1 (en) * 1984-10-22 1986-04-24 Silberzahn, Helmut, 6950 Mosbach Apparatus for transporting boxes or the like
US4780993A (en) * 1985-04-05 1988-11-01 Carrier Vibrating Equipment, Inc. Method and apparatus for surface treating a workpiece
EP0159625A3 (en) * 1984-04-12 1988-11-30 Helmut Silberzahn Apparatus for transporting cases or the like
US4916865A (en) * 1985-04-05 1990-04-17 Carrier Vibrating Equipment, Inc. Apparatus for surface treating a workpiece
ES2228220A1 (en) * 2002-08-14 2005-04-01 Manufacturas De Precision, S.A. Plastic box washer for washing fruits and vegetables, has chain conveyor equipped in water tank and provided with water heater, hot water pump and water projection unit, and fixed outer nozzles equipped in water tank
US20140060585A1 (en) * 2010-10-04 2014-03-06 Marel Stork Poultry Processing B.V. Device and Method for Cleaning a Support Structure for Poultry Holders
EP2767493A1 (en) * 2013-02-16 2014-08-20 KNAPP Systemintegration GmbH Method and device for manipulating objects
WO2020185076A1 (en) * 2019-03-12 2020-09-17 Moba Group B.V. Method and apparatus for cleaning a stack of objects

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US830349A (en) * 1906-03-30 1906-09-04 Eugene Meurer Pulp-screen.
US2088313A (en) * 1934-01-26 1937-07-27 Tyler Co W S Screening machine
US2918926A (en) * 1957-01-30 1959-12-29 Simplicity Eng Co Washing and degreasing apparatus
US3148483A (en) * 1964-09-15 van fossen etal
US3336701A (en) * 1964-07-02 1967-08-22 Pangborn Corp Vibratory finishing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148483A (en) * 1964-09-15 van fossen etal
US830349A (en) * 1906-03-30 1906-09-04 Eugene Meurer Pulp-screen.
US2088313A (en) * 1934-01-26 1937-07-27 Tyler Co W S Screening machine
US2918926A (en) * 1957-01-30 1959-12-29 Simplicity Eng Co Washing and degreasing apparatus
US3336701A (en) * 1964-07-02 1967-08-22 Pangborn Corp Vibratory finishing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413797A1 (en) * 1984-04-12 1985-11-28 Helmut 6950 Mosbach Silberzahn Device for transporting boxes or the like
EP0159625A3 (en) * 1984-04-12 1988-11-30 Helmut Silberzahn Apparatus for transporting cases or the like
DE3422840A1 (en) * 1984-06-20 1986-01-09 Silberzahn, Helmut, 6950 Mosbach Apparatus for transporting boxes or the like
DE3438691A1 (en) * 1984-10-22 1986-04-24 Silberzahn, Helmut, 6950 Mosbach Apparatus for transporting boxes or the like
US4780993A (en) * 1985-04-05 1988-11-01 Carrier Vibrating Equipment, Inc. Method and apparatus for surface treating a workpiece
US4916865A (en) * 1985-04-05 1990-04-17 Carrier Vibrating Equipment, Inc. Apparatus for surface treating a workpiece
ES2228220A1 (en) * 2002-08-14 2005-04-01 Manufacturas De Precision, S.A. Plastic box washer for washing fruits and vegetables, has chain conveyor equipped in water tank and provided with water heater, hot water pump and water projection unit, and fixed outer nozzles equipped in water tank
ES2228220B1 (en) * 2002-08-14 2006-06-01 Roda Iberica, S.A.U. PLASTIC BOX WASHING MACHINE.
US20140060585A1 (en) * 2010-10-04 2014-03-06 Marel Stork Poultry Processing B.V. Device and Method for Cleaning a Support Structure for Poultry Holders
EP2767493A1 (en) * 2013-02-16 2014-08-20 KNAPP Systemintegration GmbH Method and device for manipulating objects
WO2020185076A1 (en) * 2019-03-12 2020-09-17 Moba Group B.V. Method and apparatus for cleaning a stack of objects

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