CA2894043A1 - Disk screen for separating solid materials - Google Patents
Disk screen for separating solid materials Download PDFInfo
- Publication number
- CA2894043A1 CA2894043A1 CA2894043A CA2894043A CA2894043A1 CA 2894043 A1 CA2894043 A1 CA 2894043A1 CA 2894043 A CA2894043 A CA 2894043A CA 2894043 A CA2894043 A CA 2894043A CA 2894043 A1 CA2894043 A1 CA 2894043A1
- Authority
- CA
- Canada
- Prior art keywords
- disks
- separating solid
- disk screen
- sleeve
- solid residues
- 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.)
- Abandoned
Links
- 239000011343 solid material Substances 0.000 title description 12
- 239000007787 solid Substances 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 20
- 238000012216 screening Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000003923 scrap metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
- B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/026—Separating fibrous materials from waste
- D21B1/028—Separating fibrous materials from waste by dry methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Processing Of Solid Wastes (AREA)
- Centrifugal Separators (AREA)
- Cyclones (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Disk screen for separating solid residues, provided with multiple parallel rotating shafts (3), each of which carrying, associated therewith, a plurality of disks (8) mounted spaced from each other in succession along the extension thereof. A plurality of sleeves (10) provided with a tubular body (11) are externally and idly mounted on the rotating shafts (3) between pairs of disks (8) in succession. The lateral faces of the aforesaid disks (8) have a central depression (12) of circular form, in which the annular shoulders (13) of each sleeve (10) are inserted, such shoulders fixed to the ends of the corresponding tubular body (11).
Description
. =
DISK SCREEN FOR SEPARATING SOLID MATERIALS
DESCRIPTION
Field of application The present invention regards a disk screen for separating solid materials, according to the preamble of the main independent claim.
The present disk screen is intended to be employed, in a per se conventional manner, for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
The disk screen according to the invention is therefore inserted in the industrial field of treating solid residues and is advantageously intended to be installed downstream of plants for crushing and grinding the same residues.
State of the art Hereinbelow, the term "residues" refers - in an undifferentiated manner and for the sake of brevity - to any one solid material which requires being separated into its components based on size or mass.
Known on the market are numerous different apparatuses intended to be employed for separating solid residues in multiple fields of application, as well as employing different structural and functioning principles. Among such apparatuses, there are for example the following: mesh screens, screw screens, disk screens, ballistic separators, drum screens, fluid bed separators, electrostatic separators, magnetic separators and still other apparatuses.
The present invention regards a screen of disk type, for example described in the patent US
4972959.
More in detail, the disk screens usually comprise a support structure, which carries, rotatably mounted thereon, numerous equidistant shafts in succession, parallel to each other and rotating in a same rotation direction. A group of disks is axially fixed on each shaft, such disks separated from each other by a distance less than the thickness of the single disks, in order to allow interposing the disks mounted on the contiguous shafts such that each disk of any one shaft is interposed between two disks of the adjacent front and rear shafts.
In the present field of the art, one thing that marks the characteristics of the disk screen is the screening surface. The latter is defined as the area of the openings delimited between the disks and the rotating shafts and is therefore indicative of the size of the residues that are separated 1 0 by the screen, falling by gravity below the surface of the screening surface.
A screen is known from the model DE 29711724 in which the disks mounted on the rotating shafts are maintained spaced from each other by spacer rollers directly fit on the disks, so as to rotate together therewith.
The disk screens of the above-described type have in practice proven that they do not lack 1 5 drawbacks.
The main drawback lies in the fact that the presence of filiform elements between the residues to be screened, such as the presence of cables, strips, rags, plastic bags and similar materials, jeopardizes the correct operation of the screen. Such filiform elements in fact tend to be twisted around the disks and shafts of the screen and to obstruct the spaces between the disks, 20 modifying the screen area and in the end compromising the screening operations.
Consequently, repeated maintenance operations are frequently necessary for these screens, for cleaning operations, with consequent undesired stops of production.
In order to overcome such drawbacks, a disk screen is known from the patent EP
1106264 on behalf of the same Applicant that is provided with idle sleeves interposed between the disks,
DISK SCREEN FOR SEPARATING SOLID MATERIALS
DESCRIPTION
Field of application The present invention regards a disk screen for separating solid materials, according to the preamble of the main independent claim.
The present disk screen is intended to be employed, in a per se conventional manner, for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
The disk screen according to the invention is therefore inserted in the industrial field of treating solid residues and is advantageously intended to be installed downstream of plants for crushing and grinding the same residues.
State of the art Hereinbelow, the term "residues" refers - in an undifferentiated manner and for the sake of brevity - to any one solid material which requires being separated into its components based on size or mass.
Known on the market are numerous different apparatuses intended to be employed for separating solid residues in multiple fields of application, as well as employing different structural and functioning principles. Among such apparatuses, there are for example the following: mesh screens, screw screens, disk screens, ballistic separators, drum screens, fluid bed separators, electrostatic separators, magnetic separators and still other apparatuses.
The present invention regards a screen of disk type, for example described in the patent US
4972959.
More in detail, the disk screens usually comprise a support structure, which carries, rotatably mounted thereon, numerous equidistant shafts in succession, parallel to each other and rotating in a same rotation direction. A group of disks is axially fixed on each shaft, such disks separated from each other by a distance less than the thickness of the single disks, in order to allow interposing the disks mounted on the contiguous shafts such that each disk of any one shaft is interposed between two disks of the adjacent front and rear shafts.
In the present field of the art, one thing that marks the characteristics of the disk screen is the screening surface. The latter is defined as the area of the openings delimited between the disks and the rotating shafts and is therefore indicative of the size of the residues that are separated 1 0 by the screen, falling by gravity below the surface of the screening surface.
A screen is known from the model DE 29711724 in which the disks mounted on the rotating shafts are maintained spaced from each other by spacer rollers directly fit on the disks, so as to rotate together therewith.
The disk screens of the above-described type have in practice proven that they do not lack 1 5 drawbacks.
The main drawback lies in the fact that the presence of filiform elements between the residues to be screened, such as the presence of cables, strips, rags, plastic bags and similar materials, jeopardizes the correct operation of the screen. Such filiform elements in fact tend to be twisted around the disks and shafts of the screen and to obstruct the spaces between the disks, 20 modifying the screen area and in the end compromising the screening operations.
Consequently, repeated maintenance operations are frequently necessary for these screens, for cleaning operations, with consequent undesired stops of production.
In order to overcome such drawbacks, a disk screen is known from the patent EP
1106264 on behalf of the same Applicant that is provided with idle sleeves interposed between the disks,
- 2 -such sleeves having the function of preventing or at least limiting the obstruction of the screen area.
More in detail, each sleeve is axially mounted on the shaft between two disks with clearance adapted to allow it to freely idly rotate on the shaft or on a tubular body provided externally with respect to the shaft.
In operation, possible filiform elements that twist externally with respect to the idle sleeves, until they affect the disks mounted on the adjacent shafts, would not compromise the functioning of the screen nor would they cause stoppage since each sleeve, being idle with respect to the shaft on which it is mounted, would be driven in rotation without constraining 1 0 the rotation of the shafts.
Also known, from the patent application WO -A- 2011045656 on behalf of the same Applicant, is a screen of the above-described type, in which a stabilizing mass is arranged within the idle sleeves in order to prevent or at least limit, during screen operation, the sleeves from being driven in rotation by the filiform elements, facilitating the twisting of the latter.
The disk screens with idle sleeves of the above-described known type have in practice the drawback of allowing small-size material (such as sand, dust etc.) to be inserted in the clearance existing between the idle sleeves and the disks fit on the shafts, so as to create a mechanical connection between the rotating shafts and the sleeves themselves, coming to drive in rotation the sleeves to the detriment of their anti-twisting action.
Presentation of the invention In this situation, the problem underlying the present invention is therefore that of eliminating the problems of the abovementioned prior art, by providing a disk screen for separating solid materials which is entirely reliable in operation over time.
Another object of the present invention is to provide a disk screen for separating solid
More in detail, each sleeve is axially mounted on the shaft between two disks with clearance adapted to allow it to freely idly rotate on the shaft or on a tubular body provided externally with respect to the shaft.
In operation, possible filiform elements that twist externally with respect to the idle sleeves, until they affect the disks mounted on the adjacent shafts, would not compromise the functioning of the screen nor would they cause stoppage since each sleeve, being idle with respect to the shaft on which it is mounted, would be driven in rotation without constraining 1 0 the rotation of the shafts.
Also known, from the patent application WO -A- 2011045656 on behalf of the same Applicant, is a screen of the above-described type, in which a stabilizing mass is arranged within the idle sleeves in order to prevent or at least limit, during screen operation, the sleeves from being driven in rotation by the filiform elements, facilitating the twisting of the latter.
The disk screens with idle sleeves of the above-described known type have in practice the drawback of allowing small-size material (such as sand, dust etc.) to be inserted in the clearance existing between the idle sleeves and the disks fit on the shafts, so as to create a mechanical connection between the rotating shafts and the sleeves themselves, coming to drive in rotation the sleeves to the detriment of their anti-twisting action.
Presentation of the invention In this situation, the problem underlying the present invention is therefore that of eliminating the problems of the abovementioned prior art, by providing a disk screen for separating solid materials which is entirely reliable in operation over time.
Another object of the present invention is to provide a disk screen for separating solid
- 3 -materials which prevents repeating maintenance operations due to the twisting of filiform elements.
Another object of the present invention is to provide a disk screen for separating solid materials which is capable of maintaining the idle rotation of provided sleeves mounted on rotating shafts.
Another object of the present invention is to provide a disk screen for separating solid materials which is simple and inexpensive to attain and entirely reliable in operation.
Another object of the present invention is to provide a disk screen for separating solid materials which can be employed in a versatile manner in different application areas.
Brief description of the drawings The technical characteristics of the finding, according to the aforesaid objects, can be clearly seen in the contents of the below-reported claims and the advantages thereof will be clearer in the following detailed description, made with reference to the enclosed drawings, which represent a merely exemplifying and non-limiting embodiment of the invention, in which:
- figure 1 shows a perspective image of the disk screen for separating solid materials, according to the present invention;
- figure 2 shows an enlarged detail of the screen of figure 1 in plan view, relative to several rotating shafts with a plurality of disks mounted thereon;
- figure 3 shows the detail of figure 2 in a side view;
- figure 4 shows a section view carried out along the lines IV - IV of figure 2;
- figure 5 shows an enlarged detail of the screen of figure 1 relative to a disk with a sleeve associated therewith, in perspective view;
- figure 6 shows an enlarged detail of the screen of figure 1 relative to a disk with a spacer associated therewith together with a rotating shaft portion, with the sleeve of figure 5 depicted
Another object of the present invention is to provide a disk screen for separating solid materials which is capable of maintaining the idle rotation of provided sleeves mounted on rotating shafts.
Another object of the present invention is to provide a disk screen for separating solid materials which is simple and inexpensive to attain and entirely reliable in operation.
Another object of the present invention is to provide a disk screen for separating solid materials which can be employed in a versatile manner in different application areas.
Brief description of the drawings The technical characteristics of the finding, according to the aforesaid objects, can be clearly seen in the contents of the below-reported claims and the advantages thereof will be clearer in the following detailed description, made with reference to the enclosed drawings, which represent a merely exemplifying and non-limiting embodiment of the invention, in which:
- figure 1 shows a perspective image of the disk screen for separating solid materials, according to the present invention;
- figure 2 shows an enlarged detail of the screen of figure 1 in plan view, relative to several rotating shafts with a plurality of disks mounted thereon;
- figure 3 shows the detail of figure 2 in a side view;
- figure 4 shows a section view carried out along the lines IV - IV of figure 2;
- figure 5 shows an enlarged detail of the screen of figure 1 relative to a disk with a sleeve associated therewith, in perspective view;
- figure 6 shows an enlarged detail of the screen of figure 1 relative to a disk with a spacer associated therewith together with a rotating shaft portion, with the sleeve of figure 5 depicted
- 4 --in exploded view.
Detailed description of a preferred embodiment With reference to the enclosed drawings, reference number 1 indicates a disk screen for separating solid materials, subject of the present invention.
The screen 1 according to the invention is adapted to be employed for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
The disk screen 1 as schematically represented in the enclosed figures comprises a support structure 2, intended to abut against the ground, and on which a plurality of rotating shafts 3 -parallel to and spaced from each other - are rotatably mounted, as in particular can be appreciated in the image of figure 2 which represents a plan view of the screen.
The rotating shafts 3 have longitudinal extension axes, indicated with Y, which define a preferably horizontal position, as illustrated in the drawings, but which can also assume a tilt without departing from the protective scope of the present patent.
Driving means 4 are provided that are adapted to carry the shafts 3 in rotation, in the rotation direction indicated by the arrow and marked with the reference R.
The shafts 3 all rotate in the same rotation direction R in order to move the residues between an inlet port and an outlet port in a per se entirely conventional manner, for this reason not described in more detail.
In accordance with a preferred embodiment of the invention illustrated in figures 2 and 3, the driving means 4 comprise an electric motor 4a and motion transmission means 5 mechanically connected to the electric motor 4a. Such transmission means 5 in turn comprise a chain 6
Detailed description of a preferred embodiment With reference to the enclosed drawings, reference number 1 indicates a disk screen for separating solid materials, subject of the present invention.
The screen 1 according to the invention is adapted to be employed for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
The disk screen 1 as schematically represented in the enclosed figures comprises a support structure 2, intended to abut against the ground, and on which a plurality of rotating shafts 3 -parallel to and spaced from each other - are rotatably mounted, as in particular can be appreciated in the image of figure 2 which represents a plan view of the screen.
The rotating shafts 3 have longitudinal extension axes, indicated with Y, which define a preferably horizontal position, as illustrated in the drawings, but which can also assume a tilt without departing from the protective scope of the present patent.
Driving means 4 are provided that are adapted to carry the shafts 3 in rotation, in the rotation direction indicated by the arrow and marked with the reference R.
The shafts 3 all rotate in the same rotation direction R in order to move the residues between an inlet port and an outlet port in a per se entirely conventional manner, for this reason not described in more detail.
In accordance with a preferred embodiment of the invention illustrated in figures 2 and 3, the driving means 4 comprise an electric motor 4a and motion transmission means 5 mechanically connected to the electric motor 4a. Such transmission means 5 in turn comprise a chain 6
- 5 -wound as a closed loop and engaging with a pinion 7 fixed to the shaft of the motor 4a and to gear wheels 70 fit on each rotating shaft 2.
The screen 1 also comprises a plurality of disks 8, which are axially mounted in succession along the rotating shafts 3 in order to receive the rotation motion therefrom.
More in detail, on each rotating shaft 3, a group of disks 8 is mounted which, for example, in accordance with the enclosed figure 2, can be formed by nine and ten disks on adjacent shafts in succession.
The disks 8 of each group of disks are mounted spaced from each other along the extension of the longitudinal axis Y of the rotating shaft 3.
The screen 1 is also provided with a plurality of sleeves 10, each of which comprising a tubular body 11 mounted externally idle on a respective rotating shaft 3 between two disks 8 in succession.
The disks 8 are instead otherwise mechanically rotatably coupled to the rotating shaft 3 in order to receive the rotation motion thereof For such purpose, the rotating shaft 3 for example has a male shaped profile 30, defined by the form of its external surface and in particular by its cross section, and the disk 8 has a female shaped profile 80 joined to the aforesaid male shaped profile 30, and in particular defined by a through hole adapted to receive the aforesaid male shaped profile 30.
More in detail, the male shaped profile 30 has a polygonal (e.g. hexagonal) cross section, and the disks 8 have a female shaped profile 80 defined by a through hole 80 with corresponding polygonal shape traversed, to size, by the rotating shaft 3 which, due to the aforesaid form engagement, is thus susceptible to rotate the group of disks 8.
Preferably, each disk 8 has the shape of a hexagonal polygonal prism having six flat faces 8C
that facilitate the advancement of the residues to be screened during the rotation of the shafts
The screen 1 also comprises a plurality of disks 8, which are axially mounted in succession along the rotating shafts 3 in order to receive the rotation motion therefrom.
More in detail, on each rotating shaft 3, a group of disks 8 is mounted which, for example, in accordance with the enclosed figure 2, can be formed by nine and ten disks on adjacent shafts in succession.
The disks 8 of each group of disks are mounted spaced from each other along the extension of the longitudinal axis Y of the rotating shaft 3.
The screen 1 is also provided with a plurality of sleeves 10, each of which comprising a tubular body 11 mounted externally idle on a respective rotating shaft 3 between two disks 8 in succession.
The disks 8 are instead otherwise mechanically rotatably coupled to the rotating shaft 3 in order to receive the rotation motion thereof For such purpose, the rotating shaft 3 for example has a male shaped profile 30, defined by the form of its external surface and in particular by its cross section, and the disk 8 has a female shaped profile 80 joined to the aforesaid male shaped profile 30, and in particular defined by a through hole adapted to receive the aforesaid male shaped profile 30.
More in detail, the male shaped profile 30 has a polygonal (e.g. hexagonal) cross section, and the disks 8 have a female shaped profile 80 defined by a through hole 80 with corresponding polygonal shape traversed, to size, by the rotating shaft 3 which, due to the aforesaid form engagement, is thus susceptible to rotate the group of disks 8.
Preferably, each disk 8 has the shape of a hexagonal polygonal prism having six flat faces 8C
that facilitate the advancement of the residues to be screened during the rotation of the shafts
- 6 -2. In other embodiments of the present invention, the disks 8 can also have external profiles of different shape, advantageously adapted for facilitating the advancement of the residues between the inlet port and the outlet port.
Functionally, when the screen 1 is operating, the motor 4a - by means of the chain 6 wound as a ring on the pinion 7 of the motor shaft and on the gear wheels 70 of the rotating shafts 3 -rotates the rotating shafts 3 in the same direction, indicated with R, and the hexagonal profile with flat surface 8c of the disks 8 impacts with the residues, facilitating the advancement thereof via thrust along the screening plane in the advancement direction indicated with A in figure 1.
During such advancement of the residues, those with size smaller than the openings defined between the disks 8 and the sleeves 10 fall via gravity below the screening plane, obtaining the selection of the materials as a function of their size.
During screening, the presence of the sleeves 10 prevents, or at least limits, the winding of filiform residues around the rotating shafts 3. Indeed, the sleeves 10 do not follow the rotating shafts 3 during their rotation and are not integrally moved with the residues.
Each disk 8 is provided with two lateral faces 8A and 8B orthogonal to the longitudinal axis Y
of the respective rotating shafts 3.
Such faces 8A and 8B are preferably substantially parallel and oriented in opposite directions.
In accordance with the idea underlying the present invention, the lateral faces 8A and 8B of the disks 8 have a central depression 12 of circular form and each sleeve 10 in turn comprises two annular shoulders 13 fixed to the ends of the tubular body 11, such shoulders radially extended with respect to the tubular body 11 itself, and inserted, substantially to size, within the central depressions 12 of the faces 8A and 8B of the disks 8.
Advantageously, the annular shoulders 13 of each sleeve 10 are fixed to the ends of the tubular
Functionally, when the screen 1 is operating, the motor 4a - by means of the chain 6 wound as a ring on the pinion 7 of the motor shaft and on the gear wheels 70 of the rotating shafts 3 -rotates the rotating shafts 3 in the same direction, indicated with R, and the hexagonal profile with flat surface 8c of the disks 8 impacts with the residues, facilitating the advancement thereof via thrust along the screening plane in the advancement direction indicated with A in figure 1.
During such advancement of the residues, those with size smaller than the openings defined between the disks 8 and the sleeves 10 fall via gravity below the screening plane, obtaining the selection of the materials as a function of their size.
During screening, the presence of the sleeves 10 prevents, or at least limits, the winding of filiform residues around the rotating shafts 3. Indeed, the sleeves 10 do not follow the rotating shafts 3 during their rotation and are not integrally moved with the residues.
Each disk 8 is provided with two lateral faces 8A and 8B orthogonal to the longitudinal axis Y
of the respective rotating shafts 3.
Such faces 8A and 8B are preferably substantially parallel and oriented in opposite directions.
In accordance with the idea underlying the present invention, the lateral faces 8A and 8B of the disks 8 have a central depression 12 of circular form and each sleeve 10 in turn comprises two annular shoulders 13 fixed to the ends of the tubular body 11, such shoulders radially extended with respect to the tubular body 11 itself, and inserted, substantially to size, within the central depressions 12 of the faces 8A and 8B of the disks 8.
Advantageously, the annular shoulders 13 of each sleeve 10 are fixed to the ends of the tubular
- 7 -body 11 by means of fixing means, such as welding or screw means.
While the disks 8 rotate, moved by the rotating shaft 3, the sleeves 10 with their annular shoulders 13 remain mainly stopped, given that they are idly mounted on the rotating shafts 3.
The provided object of the invention - to insert the annular shoulders 13 within the central depressions 12 - allows obtaining the necessary clearance between the two moving parts at a position in which it is improbable that there will be an insertion of undesired material that would lead to connecting the sleeve 10 to the disk 8 and to the shaft 3, i.e.
bringing in rotation also the sleeve 10, as if it were not idly mounted.
Otherwise, in the screens of the known type, the clearance between sleeve and disks is obtained on the tubular body, i.e. on the bottom of the space enclosed between the disks, and involves the undesired penetration of material with the consequent formation of a mechanical drive constraint between sleeves and disks that leads to the twisting of the filiform material.
As can be observed in the enclosed figures 4, 5 and 6, the depressions 12 are situated on a lying plane that is more retreated and within the disk 8 than the plane defined by the remaining annular portions 9 of the lateral faces 8A, 8B, to which the depressions 12 are connected by means of a sunken edge 120. Such edge 120 peripherally delimits the depressions 12, is therefore extended with an axial component within the thickness of the disk 8, and faces, with a minimum clearance, the circumferential profile 113 of the annular shoulders 13.
Consequently, the lateral areas of the annular shoulders 13, i.e. the most external faces directed towards the opposite shoulder 13 of the same sleeve 10, are embedded within the central depressions 12, i.e. they are slightly recessed in the disk 8 by a thickness S illustrated in figure 4.
In addition, advantageously, the annular shoulders 13 of each sleeve 10 are radially extended for a section 23 towards the longitudinal axis Y of the shaft 3 and are each provided with a
While the disks 8 rotate, moved by the rotating shaft 3, the sleeves 10 with their annular shoulders 13 remain mainly stopped, given that they are idly mounted on the rotating shafts 3.
The provided object of the invention - to insert the annular shoulders 13 within the central depressions 12 - allows obtaining the necessary clearance between the two moving parts at a position in which it is improbable that there will be an insertion of undesired material that would lead to connecting the sleeve 10 to the disk 8 and to the shaft 3, i.e.
bringing in rotation also the sleeve 10, as if it were not idly mounted.
Otherwise, in the screens of the known type, the clearance between sleeve and disks is obtained on the tubular body, i.e. on the bottom of the space enclosed between the disks, and involves the undesired penetration of material with the consequent formation of a mechanical drive constraint between sleeves and disks that leads to the twisting of the filiform material.
As can be observed in the enclosed figures 4, 5 and 6, the depressions 12 are situated on a lying plane that is more retreated and within the disk 8 than the plane defined by the remaining annular portions 9 of the lateral faces 8A, 8B, to which the depressions 12 are connected by means of a sunken edge 120. Such edge 120 peripherally delimits the depressions 12, is therefore extended with an axial component within the thickness of the disk 8, and faces, with a minimum clearance, the circumferential profile 113 of the annular shoulders 13.
Consequently, the lateral areas of the annular shoulders 13, i.e. the most external faces directed towards the opposite shoulder 13 of the same sleeve 10, are embedded within the central depressions 12, i.e. they are slightly recessed in the disk 8 by a thickness S illustrated in figure 4.
In addition, advantageously, the annular shoulders 13 of each sleeve 10 are radially extended for a section 23 towards the longitudinal axis Y of the shaft 3 and are each provided with a
- 8 -through hole 130 traversed by the same rotating shaft 3.
In accordance with a preferred embodiment of the present invention, the annular shoulders 13 of each sleeve 10 are obtained with shaped metal plates, centrally provided with the through hole 130 for traversing the shaft 3.
The screen 1 also comprises preferably a plurality of spacer tubular bodies 14, each of which is externally mounted on the rotating shaft 3 and is interposed and in abutment between the lateral faces 8A and 8B of two disks 8 in succession. Therefore, the disks 8 are inserted in succession on the rotating shaft 8, alternating them with the spacer tubular bodies 14 which, being pressed between the contiguous disks, rotate together therewith.
In addition, externally with respect to each spacer tubular body 14, a corresponding sleeve 10 is externally mounted with clearance.
Therefore, the longitudinal length D of each spacer tubular body 14 defines the distance between each pair of disks 8 and is slightly greater than the longitudinal length d of each sleeve 10, in order to ensure the axial clearance of such sleeve between the pair of disks 8, between which it is comprised.
In such a manner, each sleeve 10 can be rotatably moved in a free manner around the corresponding spacer tubular body 14 on which it is mounted.
In order to allow an entirely idle rotation of the sleeves 10 on the spacer tubular bodies 14, a radial clearance G is provided therebetween, illustrated as an example in figure 4.
The finding thus conceived therefore attains the pre-established objects. Of course, it can also assume, in the practical attainment thereof, shapes and configurations that are different from that illustrated above, without departing from the present protective scope.
In addition, all details can be substituted with technically equivalent elements, and the size, shapes and materials used can be of any type in accordance with requirements.
In accordance with a preferred embodiment of the present invention, the annular shoulders 13 of each sleeve 10 are obtained with shaped metal plates, centrally provided with the through hole 130 for traversing the shaft 3.
The screen 1 also comprises preferably a plurality of spacer tubular bodies 14, each of which is externally mounted on the rotating shaft 3 and is interposed and in abutment between the lateral faces 8A and 8B of two disks 8 in succession. Therefore, the disks 8 are inserted in succession on the rotating shaft 8, alternating them with the spacer tubular bodies 14 which, being pressed between the contiguous disks, rotate together therewith.
In addition, externally with respect to each spacer tubular body 14, a corresponding sleeve 10 is externally mounted with clearance.
Therefore, the longitudinal length D of each spacer tubular body 14 defines the distance between each pair of disks 8 and is slightly greater than the longitudinal length d of each sleeve 10, in order to ensure the axial clearance of such sleeve between the pair of disks 8, between which it is comprised.
In such a manner, each sleeve 10 can be rotatably moved in a free manner around the corresponding spacer tubular body 14 on which it is mounted.
In order to allow an entirely idle rotation of the sleeves 10 on the spacer tubular bodies 14, a radial clearance G is provided therebetween, illustrated as an example in figure 4.
The finding thus conceived therefore attains the pre-established objects. Of course, it can also assume, in the practical attainment thereof, shapes and configurations that are different from that illustrated above, without departing from the present protective scope.
In addition, all details can be substituted with technically equivalent elements, and the size, shapes and materials used can be of any type in accordance with requirements.
- 9 -
Claims (9)
1) Disk screen for separating solid residues, which comprises:
- a support structure (2);
- a plurality of rotating shafts (3) parallel to each other and rotatably mounted on said support structure (2);
- means (4) for driving said rotating shafts (3) in order to rotate them around their longitudinal extension axis (Y);
- a plurality of disks (8) axially mounted in succession, spaced from each other along said rotating shafts (3), provided with two lateral faces (8A, 8B) orthogonal to the longitudinal axis of the corresponding said rotating shafts (3);
- a plurality of sleeves (10), each comprising a tubular body (11) mounted externally idle on a corresponding said rotating shaft (3) between two disks (8) in succession;
characterized in that the lateral faces of said disks (8) have a central depression (12) of circular form;
each said sleeve (10) comprising two annular shoulders (13) fixed to the ends of said tubular body (11), radially extended with respect to said tubular body (11) and inserted inside the central depressions (12) of the lateral faces (8A, 8B) of said disks (8).
- a support structure (2);
- a plurality of rotating shafts (3) parallel to each other and rotatably mounted on said support structure (2);
- means (4) for driving said rotating shafts (3) in order to rotate them around their longitudinal extension axis (Y);
- a plurality of disks (8) axially mounted in succession, spaced from each other along said rotating shafts (3), provided with two lateral faces (8A, 8B) orthogonal to the longitudinal axis of the corresponding said rotating shafts (3);
- a plurality of sleeves (10), each comprising a tubular body (11) mounted externally idle on a corresponding said rotating shaft (3) between two disks (8) in succession;
characterized in that the lateral faces of said disks (8) have a central depression (12) of circular form;
each said sleeve (10) comprising two annular shoulders (13) fixed to the ends of said tubular body (11), radially extended with respect to said tubular body (11) and inserted inside the central depressions (12) of the lateral faces (8A, 8B) of said disks (8).
2) Disk screen for separating solid residues according to claim 1, characterized in that said depressions (12) are perimetrically delimited by a sunken edge (120) facing, to size, the circumferential profile (113) of said annular shoulders (13).
3) Disk screen for separating solid residues according to claim 1, characterized in that the lateral areas of said annular shoulders (13) are embedded within said central depressions (12).
4) Disk screen for separating solid residues according to claim 1, characterized in that the annular shoulders (13) of each said sleeve (10) are radially extended towards the axis (Y) of said rotating shaft (3) and are each provided with a through hole (130) traversed by said rotating shaft (3) in order to allow the idle rotation of said sleeve (10) on said rotating shaft (3) itself.
5) Disk screen for separating solid residues according to claim 1, characterized in that the annular shoulders (13) of each said sleeve (10) are fixed to the ends of said tubular body (11) by means of fixing means.
6) Disk screen for separating solid residues according to claim 1, characterized in that the annular shoulders (13) of each said sleeve (10) are obtained with shaped metal plates.
7) Disk screen for separating solid residues according to claim 1, characterized in that it comprises a plurality of spacer tubular bodies (14), each of which is externally mounted on a corresponding said rotating shaft (3), is interposed and in abutment between the lateral faces (8A, 8B) of two disks (8) in succession, and externally carries a corresponding sleeve (10) idly mounted thereon.
8) Disk screen for separating solid residues according to claim 7, characterized in that the longitudinal length (D) of said spacer tubular bodies (14) is greater than the longitudinal length (d) of said sleeves (10).
9) Disk screen for separating solid residues according to claim 7, characterized in that between said spacer tubular bodies (14) and said sleeves (10), a radial clearance (G) is present.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITPD2015A000086 | 2015-04-23 | ||
| ITPD2015A000086A ITPD20150086A1 (en) | 2015-04-23 | 2015-04-23 | DISC SCREEN FOR THE SEPARATION OF SOLID MATERIALS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2894043A1 true CA2894043A1 (en) | 2016-10-23 |
Family
ID=53765332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2894043A Abandoned CA2894043A1 (en) | 2015-04-23 | 2015-06-09 | Disk screen for separating solid materials |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP3085462B1 (en) |
| CA (1) | CA2894043A1 (en) |
| DK (1) | DK3085462T3 (en) |
| ES (1) | ES2781702T3 (en) |
| HR (1) | HRP20200531T1 (en) |
| IT (1) | ITPD20150086A1 (en) |
| LT (1) | LT3085462T (en) |
| PL (1) | PL3085462T3 (en) |
| PT (1) | PT3085462T (en) |
| RS (1) | RS60086B1 (en) |
| SI (1) | SI3085462T1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457174A (en) * | 2017-10-10 | 2017-12-12 | 天津百利阳光环保设备有限公司 | A kind of disc screen for sieving house refuse |
| WO2019197969A2 (en) * | 2018-04-12 | 2019-10-17 | GEO S.A.S. di Tazzoli Antonio & C. | Separator screen in discs or stars for waste, axle useable in such screen as well as method for modifying a separator screen in discs or stars for waste |
| IT201800004449A1 (en) * | 2018-04-12 | 2019-10-12 | DISCS OR STARS SEPARATOR SCREEN FOR WASTE, AXIS THAT CAN BE USED IN THIS SCREEN AND SLEEVE THAT CAN BE USED IN THIS AXIS | |
| IT201800004450A1 (en) * | 2018-04-12 | 2019-10-12 | DISCS OR STARS SEPARATOR SCREEN FOR WASTE, AXIS THAT CAN BE USED IN THIS SCREEN AND SLEEVE THAT CAN BE USED IN THIS AXIS | |
| IT201900013791A1 (en) | 2019-08-02 | 2021-02-02 | Ecostargreen S R L | DISC SCREEN FOR THE SEPARATION OF SOLID MATERIALS |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB833698A (en) * | 1956-01-13 | 1960-04-27 | August Fischer | Improvements in or relating to idler rollers for endless belt conveyor assemblies |
| US4972959A (en) | 1989-11-30 | 1990-11-27 | Beloit Corporation | Compressible ring spacer disk screen |
| DE29711724U1 (en) | 1997-07-04 | 1997-09-04 | Kronenberger Ernst Josef | Scraper for a disc sieve or a disc separator |
| US6250478B1 (en) * | 1999-02-08 | 2001-06-26 | C P Manufacturing Inc. | Stepped disc screens of unequal inclination angles for conveying and grading recycling materials |
| DE10100473B4 (en) | 1999-10-28 | 2008-01-24 | Eurec Technology Gmbh Development & Design | Star or disk screen assembly comprising a plurality of screen disk shafts |
| DE10117496B4 (en) | 1999-10-28 | 2009-02-19 | Eurec Technology Gmbh Development & Design | Star or disk screen assembly comprising a plurality of screen disk shafts |
| DE60017535T2 (en) | 1999-12-01 | 2006-03-23 | Ecostar S.R.L., Sandrigo | Screen for waste sorting |
| DE102007027846B3 (en) * | 2007-06-13 | 2008-05-15 | Neuenhauser Maschinenbau Gmbh | Star-shaped screening machine for screening e.g. peat, of domestic waste, has screening disks with pockets, and sleeve extending in pockets, where two disks are enclosed by freely rotatable sleeve, which is made of impact-resistant plastic |
| IT1396412B1 (en) * | 2009-10-14 | 2012-11-19 | Ecostar Srl | PERFECTED SCREEN FOR THE SEPARATION OF SOLID MATERIALS. |
-
2015
- 2015-04-23 IT ITPD2015A000086A patent/ITPD20150086A1/en unknown
- 2015-06-09 CA CA2894043A patent/CA2894043A1/en not_active Abandoned
-
2016
- 2016-04-22 ES ES16166548T patent/ES2781702T3/en active Active
- 2016-04-22 RS RS20200363A patent/RS60086B1/en unknown
- 2016-04-22 PT PT161665484T patent/PT3085462T/en unknown
- 2016-04-22 LT LTEP16166548.4T patent/LT3085462T/en unknown
- 2016-04-22 PL PL16166548T patent/PL3085462T3/en unknown
- 2016-04-22 SI SI201630703T patent/SI3085462T1/en unknown
- 2016-04-22 EP EP16166548.4A patent/EP3085462B1/en active Active
- 2016-04-22 DK DK16166548.4T patent/DK3085462T3/en active
-
2020
- 2020-04-01 HR HRP20200531TT patent/HRP20200531T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SI3085462T1 (en) | 2020-09-30 |
| EP3085462B1 (en) | 2020-01-01 |
| ES2781702T3 (en) | 2020-09-04 |
| DK3085462T3 (en) | 2020-03-30 |
| LT3085462T (en) | 2020-04-10 |
| ITPD20150086A1 (en) | 2016-10-23 |
| PT3085462T (en) | 2020-03-31 |
| HRP20200531T1 (en) | 2020-09-18 |
| RS60086B1 (en) | 2020-05-29 |
| PL3085462T3 (en) | 2020-11-30 |
| EP3085462A1 (en) | 2016-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20200602 |
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| FZDE | Discontinued |
Effective date: 20221122 |
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| FZDE | Discontinued |
Effective date: 20221122 |