Classifications

• • 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
  • 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
  • B08B3/02—Cleaning by the force of jets or sprays
  • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned

Definitions

• Storage pallet containers are known in the art which are designed for storing small products, made of a base compatible with a forklift truck and a folding pallet collar with a structure made of metal bars welded in the shape of grid and fitted with internal plastic liners detachably connected to the collar.
• Such storage containers are highly durable and protect the small items stored therein against falling.
• internal liners are made of material of low thickness and when loaded with water from above, they form a pan where water accumulates, the water being difficult to drain at the subsequent container washing process step.
• removing liners from containers for washing is labour-intensive and requires the use of another washing station adapted for cleaning them.
• a device for automatically washing smoking containers and sticks, wherein a washing room is divided into washing and rinsing zones, and a conveyor is arranged inside for moving containers, the washing and conveyor travel processes being controlled by a programmer.
• a device is known from the Polish patent description PL171661 for washing containers which is divided into three washing zones, i.e. a pre-washing zone, main washing zone and final washing zone and which has a final washing zone water tank outlet connected to a pump supplying water with a pressure not lower than 0.15 MPa to the pre-washing zone where a drain is located to discharge water outside.
• a pump supplying water with a pressure not lower than 0.15 MPa to the pre-washing zone where a drain is located to discharge water outside.
• the final washing zone there is an assembly supplying water to spray nozzles, the water flowing down to a water tank in this zone.
• the final washing zone water tank is connected to the main washing zone water tank via compensating line.
• a tunnel washing station is known from description US 2007/056612 A1 , which has liquid outlet paths optimized to minimize the liquid flow between the washing station chambers and minimize the heat losses between each chamber of the washing station. Liquid outlet paths facilitate also uniform discharge of vapours from each chamber of the washing station.
• the washing station has also curtains installed apart from each other intended to isolate the chambers of the washing station to avoid transfer of liquid and heat between them and outside the washing station. Curtains with double walls have surfaces preventing sticking of curtains during operation of the tunnel washing station.
• the tunnel washing stations have also an air collector to ensure uniform drying capacity for articles of various sizes.
• a device for washing storage wire containers with internal lining having an enclosure with a transport conveyor mounted inside, the enclosure being divided by bulkheads into at least one washing chamber, at least one rinsing chamber and a drying chamber, wherein the washing chamber and the rinsing chamber are fitted with a spray system external and internal in relation to a storage container, connected to a washing liquid tank or rinsing liquid tank respectively, while drying chamber is equipped with the air blowing system and the device being connected to an automated control system and being compatible with a device for feeding and receiving containers, wherein, according to the invention, in each washing chamber and in each rinsing chamber, the spray system external in relation to a storage container faces the bottom and sides of the container and is connected to a cylinder from above, while being slidably attached in vertical guides arranged on opposite walls of the washing chamber, and the spray system internal in relation to a storage container faces the bottom and sides of the container and is connected to a cylinder from below, wherein in the upper section of each washing chamber and each rinsing
• the external spray system in the washing chamber is arranged circumferentially around a storage container and has the form of two pipes arranged opposite each other, with a rigid design and capped ends and bent in the arm-like shape, the rigid pipes further having a plurality of spray nozzles facing a storage container at various angles.
• the spray nozzles facing the bottom of a storage container and the spray nozzles facing the sides of a storage container are controlled separately.
• the internal spray system in the washing chamber has the form of a rigid rectangle-shaped pipe connected to a latticework consisting of rigid pipes arranged above the internal spray system, the rigid pipes of such a system having a plurality of spray nozzles facing a storage container at various angles.
• the spray nozzles arranged on the rectangle-shaped pipe face the sides of a storage container, while the spray nozzles arranged on latticework pipes face the bottom of a storage container.
• the spray nozzles on the rectangular-shaped pipe and the nozzles on the latticework pipes are controlled separately.
• the lifting system the internal spray system in the washing chamber is connected to has the form of a scissor jack connected to a cylinder.
• the hot air blowing system consists of at least one outlet pipe compatible with a fan connected to a heater.
• the washing station bulkheads are movable.
• the washing liquid tank and the rinsing liquid tank have filtering devices.
• a method for washing storage wire containers with internal liners consisting in that soiled containers are reversed and fed to a transport chain conveyor, then its internal and external surface is washed with a washing liquid and rinsed and dried in a chamber-type washing station, the washing and rinsing agents being supplied by means of spray nozzles, then containers are reversed and stacked, the entire process being controlled automatically, wherein, according to the invention, a soiled storage container is reversed and placed on a transport chain conveyor at a loading station, then the storage container is moved through the opened bulkheads to the washing chamber of the device for washing storage containers designed according to the invention, then all the bulkheads are closed and a washing process in the washing chamber starts by supplying a washing liquid to the spray system external in relation to a storage container and the spray system internal in relation to a storage container at the same time, the bottom of the container is washed, then the sides of the container are washed, then the described cycle of washing the outside and inside of the container is repeated many times, over the period of 2
• the washing liquid is supplied to the external spray system arranged in the washing chamber in two steps i.e. first, the washing liquid is supplied to the nozzles facing the bottom of a storage container, the liquid is sprayed under pressure, then the liquid flow to these nozzles is shut off, then as the external spray system moves along vertical guides, the washing liquid is supplied under the same pressure to the spray nozzles facing the sides of a storage container.
• the washing liquid is supplied to the internal spray system arranged in the washing chamber in two steps, i.e. first the washing liquid is supplied to the nozzles arranged on the platform pipes, a container is sprayed, then the liquid flow to these nozzles is shut off and the washing liquid flow to the nozzles facing the sides of a storage container is opened, while the jack of the internal spray system is lowered.
• the rinsing liquid is supplied to the external and internal spray system arranged in the rinsing chamber in two steps i.e. first, the rinsing liquid is supplied to the nozzles facing the bottom on the inside and outside of a storage container respectively, a container is sprayed under pressure, then the liquid flow to these nozzles is shut off, then the rinsing liquid is supplied under the same pressure to the spray nozzles facing the external and internal sides of a storage container respectively.
• a device and method for washing storage containers provide a comprehensive solution for problems involved in the washing of wire storage containers, especially those with internal linings.
• washing liquid streams reach all over a container.
• the use of an air blower which forces out the liquid retained in the upper section of a container and the use of blasting nozzles as a container is moving facilitate its subsequent drying, while simultaneous operation in all the chambers allows for the reduction of the container washing cycle.
• a device for storage wire containers with internal lining shown in Fig.1 , Fig.2 and Fig.2a , comprises a frame enclosure 1, along which a chain-design transport conveyor 2 moves which is adapted for transporting storage containers and projects out of the enclosure 1 on both sides.
• the enclosure 1 is divided along the transport conveyor 2 with crosswise bulkheads 3 into a washing chamber 4, rinsing chamber 5 and drying chamber 6, the crosswise bulkheads 3 having the form of movable curtains.
• Bulkheads 3 are also located at the beginning and end of the enclosure 1.
• a corresponding drip tray 4.1, 5.1 and 6.1 is located below the transport conveyor 2, under each chamber 4, 5 and 6.
• the device can have more bulkheads 3 depending on the number of washing chambers 4 and rinsing chambers 5 used in the washing process.
• An external spray system 7 is arranged in the washing chamber 4, for washing a storage container on the outside, and is connected to cylinders 8 from above and slidably attached in vertical guides 9 located on opposite walls of the washing chamber 4. Further, a spray system 10 is arranged in the washing chamber 4, for washing a storage container on the inside, and is connected from below to a jack 11 with a scissor design, compatible with the cylinder. In its home position, the internal spray system 10 is arranged below the chains of the transport conveyor 2. Further, in the upper section of the washing chamber 4 on the side of a bulkhead 3 dividing the enclosure 1 into the washing chamber 4 and rinsing chamber 5, an assembly of blowing-off nozzles 12 is arranged to supply compressed air, facing the bottom of a storage container.
• each washing chamber 4 has the form of two pipes 14 with a rigid design, whose ends are capped and bent in the arm-like shape 14a.
• the pipes 14 are arranged opposite each other such that together with arms 14a they embrace externally an entire storage container as shown in Fig. 1 .
• the pipes 14 have a plurality of spray nozzles 15, facing a storage container at various angles, preferably the first spray nozzles 15 face the external surface of the bottom of a storage container and the washing liquid flow thereto is controlled separately, and the second spray nozzles 15 face the sides of a storage container and the liquid flow thereto is also controlled separately, which makes it possible to wash the outside of the bottom and sides of a container without expending the washing liquid unnecessarily.
• the internal spray system 10 in the washing chamber 4 as shown in Fig.5 has the form of a rectangular frame-shaped pipe 16 with a rigid design, connected to a latticework 17 consisting of pipes 17a arranged above the internal spray system.
• the pipes 16 and pipes 17a of such a system have a plurality of spray nozzles 15, facing a storage container at various angles, wherein the spray nozzles 15 arranged on the pipes 17a of the platform 17 face the bottom of a storage container, the washing liquid flow thereto being preferably controlled separately, and the spray nozzles 15 arranged on the pipe 16 face the side walls of a container, the washing liquid flow thereto being preferably controlled separately.
• the external spray system 7 and internal spray system 10 are connected to a washing liquid tank 18 preferably by means of flexible pipes.
• the washing liquid tank 18 is divided inside into a filtering section where the washing liquid from the drip tray 4.1 flows and a principal section where the washing liquid is heated by a heating system, the liquid temperature being signalled by an appropriate sensor.
• An external spray system 19, shown on Fig.6 is arranged in the rinsing chamber 5, for rinsing a storage container on the outside, and is connected to cylinder 20 from above and moves in vertical guides 9.
• a spray system 21, shown on Fig.7 is arranged in the rinsing chamber 5, for rinsing a storage container on the outside, and is connected to cylinder 22, shown in Fig.1 , from below, moving in the vertical direction. In its home position, the spray system 21 is located below the chain of the transport conveyor 2.
• a compressed air nozzle 13 shown in Fig.1 and 2 , is arranged below the transport conveyor 2, facing upwards and whose task is to force out the water accumulating on the upper lining of a container.
• An external spray system 19 in the rinsing chamber 5, as shown in Fig.6 has the form of a rectangular frame-shaped pipe 23 having a plurality of spray nozzles 15, facing a storage container at various angles, preferably the first spray nozzles 15 face the external surface of the bottom of a storage container and the rinsing liquid flow thereto is controlled separately, and the second spray nozzles 15 face the sides of a storage container and the liquid flow thereto is also controlled separately by means of solenoid valves, which makes it possible to rinse the outside of the bottom and sides of a container without expending the rinsing liquid unnecessarily.
• the spray system 19 shown in Fig.6a may comprise a pipe 23 divided into two parts and comprising arms 23a.
• the internal spray system 21, as shown in Fig.7 has the form of a rectangular frame-shaped pipe 24 having a plurality of spray nozzles 15, facing a storage container at various angles, preferably the first spray nozzles 15 face the external surface of the bottom of a storage container and the second spray nozzles 15 face the sides of a storage container.
• the pipe 24 is connected to cross-pieces 24a.
• the internal spray system 21 may have the form of two pipes 24b and 24c connected to each other, having a plurality of spray nozzles 15 facing upwards in the pipe 24b and sidewise in the pipe 24c, the liquid flow to these pipes being controlled separately by means of solenoid valves.
• the external spray system 19 and internal spray system 21 are connected to a rinsing liquid tank 25 by means of flexible pipes.
• the rinsing liquid tank 25 has a rinsing liquid heating system and sensors to control the temperature and is connected to a separate filter 26, as shown in Fig.2a .
• a blowing system is arranged which consists of an external cold air blowing system 27 and internal cold air blowing system 28, and further a hot air blowing system 29.
• the external cold air blowing system 27 as shown in Fig.9 , comprises a rectangular frame-shaped closed pipe 30 having a plurality of outlet opening 31 facing a storage container and comprises a cylinder 30a and a fan connected to this pipe, not shown in the drawing.
• the pipe 30 moves along vertical guides 9.
• the internal cold air blowing system 28 shown in Fig.10 comprises a frame-shaped closed pipe 32 having a plurality of nozzles 33 facing the inside of a storage container and comprises an arrangement of cross-pieces 32a connected to a pipe 32 through which the pipe 32 is connected to a cylinder 32b.
• the pipe 32 is also connected to a fan not shown in the drawing.
• the pipe 32 is moved in the vertical direction by means of the cylinder 32b.
• the hot air blowing system 29 comprises a blowing pipe 34 and fan 35 connected to a heater.
• the external spray systems 7 and 19 are in their upper position, while the internal spray systems 10 and 21 are in their lower position.
• a controller installed in a control cabinet 40 enables the transport conveyor 2, then another sensor arranged in the washing chamber 4 signals the right position of the storage container, which results in stopping the transport conveyor 2 and closing the bulkheads 3 by means of subsequent pneumatic cylinders.
• the controller enables cylinders 8 and 11 connected to the spray systems 7 and 10, which results in moving these systems many times in the vertical direction, i.e.
• the washing liquid has the form of an aqueous solution of an ecological detergent used in the proportion 2/100, the washing liquid solution being heated in the washing liquid tank 18 to the temperature of 50 to 95°C depending on the container soiling level.
• the temperature and level of the washing liquid in the tank 18 are signalled by and adjustable by means of the controller 40.
• the pump which supplies the washing liquid turns off and a compressed air stream is guided through the nozzle 13 to the inside of the container, the air, forcing the bottom liner upwards, removes the accumulated washing liquid.
• the spray systems 7 and 10 return to their initial position.
• the transport conveyor 2 is enabled to move the container to the rinsing chamber 5 and bring another container to the washing chamber 4.
• the system of blowing-off nozzles 12 is enabled to remove a residue washing liquid from the top surface of the container.

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

Applications Claiming Priority (1)

Publications (2)

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ID=68470452

Family Applications (1)

Country Status (2)

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Family Cites Families (11)

• 2018
  • 2018-09-13 PL PL427049A patent/PL236907B1/pl unknown
• 2019
  • 2019-09-10 PL PL19460046.6T patent/PL3623064T3/pl unknown
  • 2019-09-10 EP EP19460046.6A patent/EP3623064B1/en active Active

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