Classifications

• • 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
  • B08B3/044—Cleaning involving contact with liquid using agitated containers in which the liquid and articles or material are placed
• • 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
  • B08B3/045—Cleaning involving contact with liquid using perforated containers, e.g. baskets, or racks immersed and agitated in a liquid bath
  • B08B3/047—Containers specially adapted therefor
• • 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
  • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
  • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations

Definitions

• the present invention relates to the technical field of parts cleaning, by immersion in a specific solution subjected to ultrasonic waves. Technological background
• the surface of a part can be cleaned in different ways, in particular by immersion in a specific solution, subjected to ultrasonic waves, so as to promote detachment of the residues present on its surface by a cavitation effect (see par. example the device proposed by document FR 2402496 A1).
• document CN209077323 proposes the use of a basket permeable to the specific solution.
• the basket allows several parts to be immersed simultaneously in the specific solution in order to increase the productivity of the cleaning process.
• the invention aims to provide a device for cleaning several parts simultaneously, by immersion in a specific solution subjected to ultrasonic waves, allowing a more homogeneous cleaning of said parts while limiting their deterioration due to impacts between the parts.
• the invention provides a device for cleaning several parts, by simultaneous immersion in a specific solution subjected to ultrasonic waves, comprising a tank capable of containing a specific cleaning solution, an ultrasonic wave generator suitable to generate ultrasonic waves in the tank.
• the invention is remarkable in that the cleaning device comprises a drum insertable into the tank and in that the drum comprises:
• [10] at least two pockets capable of containing a part to be cleaned, the pockets being permeable to a specific solution contained in the tank and the pockets are held to at least one rod of the frame.
• the invention provides a cleaning device comprising a drum that can be introduced or removed at will, in the tank capable of containing a specific cleaning solution.
• the drum comprises a frame serving as a support for several pockets.
• Each pocket is configured to accommodate a part to be cleaned, and to protect said part from other parts present in the adjacent pockets.
• the pockets are permeable to a specific solution contained in the tank, so that the drum can immerse in the specific cleaning solution, simultaneously, each part confined in the pockets.
• the cleaning device according to the invention advantageously makes it possible to expose, in a substantially homogeneous manner, several parts contained in the pockets, to the ultrasonic waves emitted by the generator, without being in contact with other parts liable to mask or reflect ultrasonic waves. As a result, the parts are cleaned in a substantially homogeneous manner.
• each part is confined in a pocket.
• the parts are not likely to collide and therefore be damaged during cleaning.
• At least one pocket comprises a reversible holding means to one or two rods of the frame.
• the reversible retention means comprises a hook or more hooks configured to grip or nest on a rod of the frame.
• a pocket is delimited by a cage permeable to a specific solution contained in the tray, the cage comprising an opening allowing the insertion and removal of a part in said cage.
• the internal volume of the cage is between 10 mm and 350 mm, preferably between 25 mm and 200 mm.
• the opening of at least one cage is closed off by an elastic wall, the elastic wall being crossed by at least one slot allowing the forceful introduction and withdrawal. force of a part in the cage.
• the elastic wall is made from one of the following materials: polyurethane elastomers, latex, silicone and mixed formulas.
• the elastic wall has a thickness between 0.5 mm and 5 mm
• the first plate and the second plate have an outline of circular shape, and the first plate is parallel to the second plate, and at least two rods extend perpendicular to the first platinum.
• the first plate comprises one or more permanent magnets, configured to allow the pivoting of the drum about a pivot axis perpendicular to the first plate, when the permanent magnet (s) are coupled with a rotating magnetic field, generated by a magnetic motor.
• the cleaning device comprises a magnetic motor capable of generating a rotating magnetic field, the magnetic motor is arranged outside the tank and opposite. a wall of the tank, so as to allow a magnetic coupling between the magnetic motor and at least one permanent magnet present at the level of the first plate of the drum, when the drum is inserted or present in the tank.
• the cleaning device comprises a base configured to support the drum in the tank, and the base comprises pivoting means facilitating the pivoting of the drum on the base, when the drum is driven by the magnetic motor.
• the pivoting means of the base comprise at least two rollers parallel to each other, of lengths greater than the drum and spaced apart by a distance less than a greater dimension of a plate, so that the plates can rest on the rollers when the plates are perpendicular to said rollers, and each end of the rollers is held by an arm so as to allow free pivoting of the rollers between the arms.
• the cleaning device comprises a means of reversible displacement of the base, between an immersion position and an emersion position, of a drum supported by the base, in a specific cleaning solution contained in the tank.
• the displacement means comprises at least one hinge supported by a side wall of the tray.
• the movement means comprises a gripping means, allowing a user to switch the base between the immersion position and the emersion position.
• the cleaning device comprises a filtration circuit, of a specific cleaning solution present in the tank, the filtration circuit comprises an exposure chamber in which the water is intended to flow.
• specific cleaning solution the walls of the exposure chamber are transparent or translucent, so that a light source positioned opposite the exposure chamber, promotes polymerization of cleaning residues from parts immersed in the specific cleaning solution.
• a mechanical filter is present downstream of the exposure chamber, so as to retain the polymerized cleaning residues.
• FIG. 1 illustrates a longitudinal section of a schematic representation of a cleaning device according to the invention
• FIG. 2 illustrates a side view of a schematic representation of a frame of a drum of the cleaning device shown in Figure 1;
• FIG. 3 illustrates a front view of a first plate of the frame shown in Figure 2
• FIG. 4 illustrates a front view of a schematic representation of a pocket intended to be mounted on the frame shown in Figure 2;
• FIG. 5 illustrates a schematic representation of a cross section of a pocket shown in Figure 4;
• FIG. 6 illustrates a cross section of a schematic representation of the cleaning device shown in Figure 1, when the drum is in the submerged position;
• FIG. 7 illustrates a cross section of a schematic representation of the cleaning device shown in Figure 1, when the drum is in the emerged position
• FIG. 8 illustrates a cross section of a schematic representation of a variant of the cleaning device shown in Figure 1, comprising a filtration circuit for the specific cleaning solution contained in the cleaning device.
• the invention provides a device for cleaning several parts, simultaneously, by immersion in a specific solution subjected to ultrasonic waves, allowing a more homogeneous cleaning of said parts while limiting their deterioration due to impacts between them. rooms.
• Figure 1 illustrates a longitudinal section of a cleaning device 2 according to the invention, comprising a tank 4 capable of containing a specific cleaning solution, an ultrasonic wave generator 6 and a drum 8.
• the tray 4 comprises a bottom 10 and four side walls 12 defining an internal volume of parallelepiped or substantially parallelepiped shape.
• the internal volume delimited by the tank is between 2 liters and 100 liters, preferably between 15 liters and 30 liters.
• the length of the tank 4 defined along an axis AA ′ illustrated in FIG. 1 is between 100 mm and 1000 mm, preferably between 250 and 500 mm.
• the width of the tray defined in a direction normal to the axis AA ’ is between 100 mm and 500 mm, preferably between 250 mm and 400 mm.
• the height of the tray defined in a direction perpendicular to the axis AA ’and to the bottom 10, is between 100 mm and 500 mm.
• the thickness of the side walls 12 is between 0.5 mm and 3 mm.
• the tank is made from a material capable of containing a specific cleaning solution.
• a specific cleaning solution can be a mixture of basic salts in the aqueous phase.
• the tray can thus be made from one of the following materials: 304 or 316 L stainless steel.
• the drum 8 which can be inserted into the tray 4 consists of a frame 14 visible in FIG. 2, delimited by a first plate 16, connected to a second plate 18 by means of six rods 20.
• the first plate 16 and the second plate 18 are delimited by a contour of circular shape, the diameter of which is between 100 mm and 350 mm, preferably between 150 mm and 250 mm.
• the thickness of the plates is between 5 mm and 25 mm.
• the plates are made from a polymer or a stainless steel.
• the plates are parallel to each other and the rods 20 are perpendicular to said plates.
• the length of the rods is between 100 mm and 500 mm, preferably between 250 mm and 400 mm.
• the diameter of each rod is between 6 mm and 12 mm, preferably between 8 mm and 10 mm.
• the rods are made from a metal or a polymer.
• the rods 20 are arranged so that their ends 22 are positioned along an outline 24 of circular shape and centered on the facing faces of the plates.
• the diameter of the contour 24 illustrated in FIG. 3 is between 25 mm and 150 mm, preferably between 50 mm and 100 mm.
• the distance separating two adjacent rods is identical between the different rods.
• the drum 8 also includes pockets 26, capable of containing a part to be cleaned.
• the cleaning device comprises a number of pockets between 1 and 150.
• FIG. 4 and 5 illustrate a non-limiting example of pocket 26 according to the invention.
• a pocket 26 consists of a cage 28 closed by an elastic wall 30.
• the walls 32 of the cage are perforated so as to allow a specific cleaning solution to completely flood the interior of the cage.
• the cage defines a volume of parallelepiped or substantially parallelepiped shape.
• the internal volume of the cage 28 is between 1 and 25 liters, preferably between 10 and 20 liters.
• the length of the cage defined along an axis AA ′ illustrated in FIG. 4 is between 250 mm and 500 mm, preferably between 350 mm and 450 mm.
• the width of the cage 28 defined in a direction normal to the axis AA ’ is between 80 mm and 350 mm, preferably between 150 mm and 250 mm.
• the height of the cage, defined along an axis BB ’visible in Figure 5, is between 10 mm and 450 mm, preferably between 25 mm and 100 mm.
• the walls 32 of the cage have a thickness of between 1 mm and 5 mm.
• the elastic wall 30 closing the cage 28 is crossed in its thickness by a slot 34 in the form of a cross.
• the slot 34 is dimensioned to allow a user to forcibly insert a workpiece into the cage, without damaging said room.
• the slot 34 is also dimensioned to allow a tool or the hand of a user to grasp an object present in the cage in order to extract it.
• the elastic wall 30 as well as the cage 28 are made from the same material based on polyurethane, silicone or other elastomeric polymers.
• Each pocket 26 comprises a reversible holding means to a rod 20 of the frame 14 of the drum 8.
• the reversible holding means is illustrated in FIG. 5 and comprises hooks 36 positioned at the level of opposite sides of the resilient wall 30.
• Each hook 36 is configured to grip or interlock with a rod 20 of the frame, to allow a user to simply and quickly position on the frame 14, the number of pockets corresponding to the number of parts to be treated.
• the first plate 16 defining the frame 14 comprises one or more permanent magnets 38, configured to allow the pivoting of the drum 8 about a pivot axis AA 'perpendicular to the first plate 16 , when the permanent magnets 38 are coupled with a rotating magnetic field, generated by a magnetic motor 40 of the cleaning device 2.
• the magnetic motor 40 is arranged outside the tray 4, facing a side wall 12A, so as to allow a magnetic coupling between the magnetic motor 40 and the permanent magnets 38 present at the level of the first plate 16 of the drum 8, when the drum is inserted into the tank 4.
• the cleaning device 2 also comprises a base 42 illustrated by Figures 1 and 6, configured to support the drum 8 in the tank 4 so that the drum is not in contact with the bottom 10 of the tank.
• the base 42 comprises pivoting means.
• the pivoting means comprise at least two rollers 44 parallel to each other.
• the length of the rollers 44 is greater than the drum 8.
• the rollers 44 are spaced apart by a distance less than a greater dimension of a plate of the drum, so that the plates can rest on the rollers, when the plates are perpendicular to said plates. rollers.
• the distance between the rollers 44 is between 10 mm and 80 mm.
• the ends of the rollers 44 are held by two arms 48 so as to allow free pivoting of the rollers.
• the base 42 is secured to a reversible displacement means, comprising two arms 48 holding the base 42 to one of their end and having a gripping means 50 at an opposite end.
• the displacement means also comprises a hinge 52 fixed to a side wall 12 of the tank 4, arranged so as to allow a user to quickly and easily position the base in a position immersed in a specific cleaning solution 54 contained in the tray 4, illustrated by FIG. 6, to an emersion position of the base illustrated by FIG. 7.
• the drum 8 supported by the base 42 is at least partially immersed in the specific cleaning solution 54 contained by the tank 4.
• the base 42 is taken out of the tank in order to allow the specific cleaning solution 54 to be evacuated from the bags 26.
• FIG. 8 now illustrates an alternative embodiment of a cleaning device 2A according to the invention.
• the cleaning device 2A differs from the cleaning device 2 described above, in that it comprises a filtration circuit 56 of the specific cleaning solution 54 present in the tank 4.
• the filtration circuit consists of a conduit 58, the ends of which open out at the level of the bottom 10 of the tank of the cleaning device.
• the specific cleaning solution 54 is taken from the tank at an upstream end 60 of the conduit 58, in order to supply an exposure chamber 62.
• the exposure chamber comprises translucent or transparent walls 64, so as to supply an exposure chamber 62.
• the exposure chamber comprises translucent or transparent walls 64. allow exposure of the specific cleaning solution to a light beam.
• the walls of the exposure chamber are made of glass.
• the light beam is emitted by a light source 66, directed towards a transparent wall 64 or else translucent of the exposure chamber.
• the light beam is configured to polymerize the resins present in the specific cleaning solution, resins originating from the parts immersed in the specific cleaning solution.
• the light source 66 is able to emit a light beam whose wavelengths are between 220 nm and 450 nm, preferably between 365 nm and 405 nm.
• the power of the light beam, at the exposure chamber is between 200 mW / cm 2 to 550 mW / cm 2 , preferably between 250 mW / cm 2 to 500 mW / cm 2
• the light beams coming from the exposure chamber are redirected towards the exposure chamber, using a reflecting surface 68, positioned opposite the exposure chamber, as illustrated in FIG. 8.
• a mechanical filter 70 Downstream of the exposure chamber 62 is present a mechanical filter 70, in order to trap the agglomerates 72 of polymerized resin, contained in the specific cleaning solution 54 , at the exit of the exhibition chamber 62.
• a downstream end 74 of conduit 58 opens at the bottom 10 of the tank, so as to reintroduce into the tank the specific cleaning solution 54 from a mechanical pump 76, positioned downstream of the mechanical filter 70.
• upstream and downstream refer to the direction of flow of the specific cleaning solution in the filtration circuit 56 described above.
• the filtration circuit makes it possible to retain a portion of the resins diluted in the specific cleaning solution, so as to significantly extend the duration of use of the specific cleaning solution. As a result, the filtration circuit reduces the amount of cleaning solutions when using the cleaning device. According to another advantage, the filtration circuit also makes it possible to space the drain cycles of the specific cleaning solution, in order to ensure optimal cleaning of the parts. Therefore, the filtration circuit also makes it possible to simplify the use of the cleaning device.

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• Cleaning By Liquid Or Steam (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=70978170

Family Applications (1)

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Family Cites Families (11)

• 2020
  • 2020-03-20 FR FR2002773A patent/FR3108265B1/fr active Active
• 2021
  • 2021-03-19 EP EP21712187.0A patent/EP4121223A1/de active Pending
  • 2021-03-19 WO PCT/EP2021/057099 patent/WO2021186038A1/fr active Application Filing

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