Patent Publication Number: US-2005138752-A1

Title: Cylinder cleaning brush unit

Description:
FIELD OF THE INVENTION  
      The invention relates to a cylinder cleaning brush unit including a brush roller for cleaning a cylinder in an offset printing press, paper making machine, paper converting machine, textile machinery or the like. The cylinder includes an outer surface to which impurities are adhered. The impurities are removed from the outer surface by the brush roller with cleaning liquid being supplied.  
     Prior Art  
      For example, impurities such as ink and powdered paper are adhered to the outer surface of a cylinder in an offset printing press or other printing press. It is therefore required to clean the cylinder at intervals to keep each of printed products having a good quality.  
      Under the circumstances, there has heretofore been proposed a cylinder cleaning apparatus including a brush unit  2  which comprises a brush roller  4  for cleaning a cylinder  6 , as shown in  FIG. 27 . The brush roller  4  is disposed between and mounted on side frames  8  for rotation to be brought into contact with the cylinder  6  at a contact position P, the brush roller  4  extending parallel to the cylinder  6 . In addition, the brush roller  4  is connected to a drive such as a motor  10 , as shown in  FIG. 28 , and rotated clockwise in  FIG. 27  by the drive  10  to clean the cylinder  6  which is rotated counterclockwise in  FIG. 27  at a speed different from the brush roller  4 . The cylinder  6  includes an outer surface to which impurities are adhered, the impurities being removed from the outer surface by the brush roller  4  with cleaning liquid being supplied. The cleaning liquid may comprise solvent and water. For example, nozzles  12  are mounted on a cross frame  14  to spout the solvent and water which are directed to the brush roller  4  and the cylinder  6  by a cover plate  16  and a hood  18 . The cross frame  14  is disposed between and mounted on the side frames  8  to extend longitudinally of the brush roller  4 .  
      The apparatus is accompanied with effluent including the cleaning liquid and impurities and discharged from the brush unit  2 . In this connection, a tray  20  is disposed beneath the brush unit  2  so that the effluent can be discharged from the brush unit  2  to be received in the tray  20 . The tray  20  may include an outlet or drain port  22  formed in the bottom thereof, the effluent being discharged from the outlet port  22 . In addition, the apparatus includes a flipper bar  24  supported by a stay  26  and brought into contact with the brush roller  4 . The effluent is flipped from the brush roller  4  by the flipper bar  24 . The stay  26  is disposed between and mounted on the side frames  8  to extend longitudinally of the brush roller  4 .  
      However, in the apparatus in which the tray  20  does not include the outlet port  22 , an operator has to detach and convey the tray  20  from the apparatus whenever the tray  20  is filled with the effluent to pour the effluent into a receptacle from the tray  20  without spilling the effluent. In addition, it is required to clean the tray  20  of sludge grown from the effluent. The operator is therefore forced to do dirty work taking labours and times. The work is very hard especially in the apparatus including many brush units.  
      On the other hand, as to the tray  20  which includes the outlet port  22 , a drain pipe is generally connected to the outlet port  22  to drain the effluent into a receptacle from the tray  20  through the drain pipe. However, the drain pipe may be clogged with sludge grown from the effluent and adhered to and deposited on the inner surface of the drain pipe. In this case, the effluent can overflow the tray  20  due to lack of drainage. Accordingly, the operator is required to clean the drain pipe clogged with the sludge, taking labours and times. It may be required to exchange the drain pipe for new one.  
      Furthermore, the cross frame  14  is splashed with the effluent flipped from the brush roller  4  by the flipper bar  24  so that sludge can be grown from the effluent and adhered to and deposited on the cross frame  14 . It is therefore required to clean the cross frame  14  of sludge.  
      It is therefore an object of the invention to provide a new and improved cylinder cleaning brush unit and cylinder cleaning apparatus, to thereby overcome the above problems.  
      Other object of the invention is to liberate an operator from dirty work taking labours and times for maintenance to improve efficiency, safety and productivity.  
     SUMMARY OF THE INVENTION  
      According to the invention, there is provided a cylinder cleaning brush unit including a brush roller for cleaning a cylinder. The cylinder includes an outer surface to which impurities are adhered, the impurities being removed from the outer surface by the brush roller with cleaning liquid being supplied.  
      The brush unit comprises an opening through which effluent is discharged from the brush unit, the effluent including the cleaning liquid and the impurities. The brush unit further comprises a filter installed in the opening, the effluent being filtrated by the filter.  
      In a preferred embodiment, the brush roller is brought into contact with the cylinder at a constant position and rotated in a rotating direction to clean the cylinder.  
      The filter may be installed in the opening to extend to the vicinity of a tangent which extends tangentially to the brush roller and the cylinder at the contact position.  
      The filter may be made of a woven or nonwoven fabric, net or perforated film. The filter may comprise a sheet.  
      In the embodiment, the brush unit further comprises a cover frame disposed opposite to the cylinder with respect to the brush roller, the cover frame including a curved surface extending along the periphery of the brush roller, the brush roller being brought into contact with the curved surface in an angular range. The brush roller may be close to the curved surface in an angular range.  
      The filter may comprise a continuous web held by and fed from a holder. In this case, the brush unit may further comprise take up means for taking up the used filter.  
      In the embodiment, the brush unit further comprises a flipper bar disposed downstream of the contact position in the rotating direction and brought into contact with the brush roller, and adjustment means by which the flipper bar is moved for adjustment of position. The opening is formed downstream of the flipper bar in the rotating direction.  
      The filter may be received and supported by a receiver. The brush unit may further comprise detecting means for detecting the decrease or exhaustion of the filter held by the holder.  
      In the embodiment, the brush unit further comprises a stay extending longitudinally of the brush roller and mounted on side frames. The flipper bar is supported by the stay for movement. The stay includes the adjustment means mounted thereon.  
      The stay may have a reversed U-shaped channel or L-shaped angle cross section in which an inside space is formed, the adjustment means being accommodated in the inside space. The filter may be held by the holder to be accommodated in the inside space.  
      In the embodiment, the the brush roller and the cylinder are rotated downwardly at the contact position.  
      The take up means may include positioning means formed on a take up shaft for positioning the filter when attached to the take up shaft.  
      The cover frame may include an inclined surface extending downwardly from the lower edge of the curved surface to be inclined away from the cylinder with respect to a vertical plane. The curved surface and the inclined surface may be disposed downstream of the flipper bar in the rotating direction. The brush roller may be rotated about a center line extending along a vertical plane, the flipper bar being disposed near the vertical plane.  
      The brush unit may comprise an opening and a sheet or continuous web installed in the opening.  
      There is also provided a tray disposed beneath the cylinder cleaning brush unit. The tray comprises an opening through which the effluent is received in the tray. The tray further comprises a filter by which at least a portion of the opening is covered, the effluent being filtrated by the filter.  
      The filter may extend to the vicinity of a tangent which extends tangentially to the brush roller and the cylinder at the contact position.  
      The tray may further comprise a bottom in which an outlet port is formed, an additional tray being disposed under the outlet port so that the effluent can be discharged from the outlet port to be received in the additional tray.  
      The filter may be made of woven or nonwoven fabric, net or perforated film. The filter may comprise a sheet.  
      The filter may comprise a continuous web held by and fed from a holder. In this case, the tray may further comprise take up means for taking up the used filter. The tray may further comprise first and second end portions, the holder being disposed under the first end portion, the take up means being disposed in the second end portion. In addition, it is preferred that the brush unit can be moved toward and away from the cylinder, the tray including driven means driven in accordance with the movement of the brush unit to make the take up means take up the used filter. The tray may further comprise detecting means for detecting the decrease or exhaustion of the filter held by the holder.  
      The filter may comprise a sheet made of woven or nonwoven fabric, net or perforated film, the tray further comprising fixing means by which the filter is fixed to the opening.  
      The tray may further comprise an outlet port through which the effluent is discharged after filtrated by the filter. The tray may further comprise absorbent material for absorbing the effluent for disposal. The tray may further comprise solidification or gelatinization agent for solidifying or gelatinizing the effluent for disposal.  
      The filter may be received and supported by a receiver. The filter may comprise a perforated plate. The plate may include a surface having convex or concave portions. The plate may include a surface wave-shaped. The filter may further comprise fabric, net or perforated film by which the surface of the plate is covered. The filter may further comprise lubricant for lubricating the surface of the plate. The filter may include positioning means cooperating with the positioning means of the take up shaft to position the filter when attached. The filter may include fixing means cooperating with the fixing means of the tray.  
      There is also provided a cylinder cleaning apparatus including the brush unit which comprises the brush roller for cleaning the cylinder. The apparatus comprises an opening through which effluent is discharged from the brush unit, the effluent including the cleaning liquid and the impurities, and a filter disposed in the opening, the effluent being filtrated by the filter.  
      The opening may be formed in the brush unit, the filter being mounted on the brush unit to be disposed in the opening.  
      The apparatus may further comprise a tray disposed beneath the brush unit, the opening being formed in the tray, the filter being mounted on the tray to be disposed in the opening, the effluent being received in the tray after filtrated by the filter. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is an explanatory view of a brush unit according to the invention.  
       FIG. 2  is an explanatory view of other brush unit according to the invention.  
       FIG. 3  is a side view of a preferred embodiment of the invention.  
       FIG. 4  is a perspective view of a filter according to the invention.  
       FIG. 5  is a perspective view of other filter according to the invention.  
       FIG. 6  is a perspective view of other filter according to the invention.  
       FIG. 7  is a side view of other embodiment of the invention.  
       FIG. 8  is a side view of other embodiment of the invention.  
       FIG. 9  is a perspective view of a tray according to the invention.  
       FIG. 10  is a sectional view taken along a line I-I of  FIG. 9 .  
       FIG. 11  is a plan view of the filter of  FIG. 9 .  
       FIG. 12  is a perspective view of other tray according to the invention.  
       FIG. 13  is a side view of other embodiment of the invention.  
       FIG. 14  is a side view of other embodiment of the invention,  
       FIG. 15  is a side view of other embodiment of the invention.  
       FIG. 16  is a perspective view of the positioning means of the take up shaft according to the invention.  
       FIG. 17  is a perspective view of the positioning means of the filter according to the invention.  
       FIG. 18  is an explanatory view of a detecting means for detecting the decrease or exhaustion of the filter according to the invention.  
       FIG. 19  is an elevational view of the filter of  FIG. 18 .  
       FIG. 20  is an explanatory view of other detecting means for detecting the decrease of exhaustion of the filter according to the invention.  
       FIG. 21  is a side view of adjustment means for a flipper bar according to the invention.  
       FIG. 22  is a sectional view taken along a line II-II of  FIG. 21 .  
       FIG. 23  is a side view of other adjustment means for the flipper bar according to the invention.  
       FIG. 24  is a side view of other embodiment of the invention.  
       FIG. 25  is a side view of other embodiment of the invention.  
       FIG. 26  is a side view of other embodiment of the invention.  
       FIG. 27  is a side view of a cylinder cleaning apparatus of prior art.  
       FIG. 28  is a perspective view of the apparatus of  FIG. 27 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      Referring now to the drawings,  FIG. 1  illustrates a cylinder cleaning apparatus including a brush unit  2  which comprises a brush roller  4  for cleaning a cylinder  6  according to the invention. The brush roller  4  is disposed between and mounted on side frames for rotation to be brought into contact with the cylinder  6  at a contact position P, the brush roller  4  extending parallel to the cylinder  6 , as in the case of the apparatus of  FIG. 27 . In addition, the brush roller  4  is rotated in a rotating direction to clean the cylinder  6 . In the embodiment, the brush roller  4  is rotated clockwise in  FIG. 1  by a drive such as a motor to clean the cylinder  6  which is rotated counterclockwise at a speed different from the brush roller  4 , as also in the case of the apparatus of  FIG. 27 . It should therefore be recognized that the brush roller  4  and the cylinder  6  are rotated downwardly at the contact position P. The cylinder  6  includes an outer surface to which impurities are adhered, the impurities being removed from the outer surface by the brush roller  4  with cleaning liquid being supplied.  
      The brush roller  4  may be rotated reversely to clean the cylinder  6 .  
      The brush unit  2  further includes a spray bar or nozzles  12  for spouting the cleaning liquid comprising solvent and water which are directed to the brush roller  4  and the cylinder  6  by a cover plate  16  and a hood  18 , as also in the case of the apparatus of  FIG. 27 . In addition, a flipper bar  24  is disposed downstream of the contact position P in the rotating direction of the brush roller  4  and brought into contact with the brush roller  4 . The flipper bar  24  is supported by a stay  26  disposed between and mounted on the side frames to extend longitudinally of the brush roller  4 . The effluent is therefore flipped from the brush roller  4  by the flipper bar  24 .  
      The brush unit  2  further includes an opening  28  formed therein. Effluent is discharged from the brush unit  2  through the opening  28 , the effluent including the cleaning liquid and the impurities. The opening  28  is formed downstream of the flipper bar  24  in the rotating direction of the brush roller  4 . The brush unit  2  further includes a filter  30  disposed and installed in the opening  28  so that the effluent can be filtrated by the filter  30 . The filter  30  is made of a woven or nonwoven fabric, net or perforated film. The fabric should be composed of synthetic fibers, natural fibers, metal wires or the mixture thereof to be free of oil impregnation, oil absorbency, lipophilic, water impregnation, water absorbency and hydrophilic.  
      The apparatus further includes a tray  20  disposed beneath the brush unit  2  so that the effluent can be discharged from the brush unit  2  to be received in the tray  20 , as also in the case of the apparatus of  FIG. 27 . The tray  20  includes a bottom in which an outlet port  22  is formed. An additional tray  32  is disposed under the outlet port  22  so that the effluent can be discharged from the outlet port  22  to be received in the additional tray  32 . The additional tray  32  includes a bottom in which an outlet port  34  is formed. A drain pipe can therefore be connected to the outlet port  34  to drain the effluent into a receptacle from the additional tray  32  through the drain pipe.  
      Accordingly, in the apparatus, the effluent can be received in the tray  20  after filtrated by the filter  30 . The effluent is then received in the additional tray  34  and directed into the drain pipe. As a result, no sludge can be grown from the effluent received in the tray  20  and the additional tray  34  after filtrated by the filter  30 . It is therefore not required to clean the tray  20  and the additional tray  34  of sludge. In addition, no sludge can be grown from the effluent and adhered to and deposited on the inner surface of the drain pipe, the drain pipe being not clogged with sludge. It is therefore not required to clean the drain pipe of sludge. The operator is not forced to do dirty work taking labours and times. It is also not required to exchange the drain pipe for now one.  
      Furthermore, the apparatus includes a cover frame or cross frame  14  disposed opposite to the cylinder  6  with respect to the brush roller  4 . The spray bar  12  is mounted on the cover frame  14  which is disposed between and mounted on the side frames to extend longitudinally of the brush roller  4 , as in the case of the cross frame  14  of  FIG. 27 . In addition, the cover frame  14  includes a curved surface  36  extending along the periphery of the brush roller  4 . The brush roller  4  is brought into contact with the curved surface  36  in an angular range A. The brush roller  4  can therefore be rotated in the rotating direction to clean the curved surface  36  of the cover frame  14  even if sludge will be grown from the effluent and adhered to the curved surface  36 . The brush roller  4  may be close to the curved surface  36  in the angular range A to clean the curved surface  36 . Accordingly, no sludge can be deposited on the curved surface  36 . The operator is therefore not required to clean the curved surface  36  of sludge.  
      The cover frame  14  further includes an inclined surface  38  extending downwardly from the lower edge of the curved surface  36  to be inclined away from the cylinder  6  with respect to a vertical plane. The curved surface  36  and the inclined surface  38  are disposed downstream of the flipper bar  24 . Sludge is therefore not adhered to and deposited on the inclined surface  38  but moved down along the inclined surface  38  to be dropped onto the filter  30  when the inclined surface  38  is splashed with the effluent flipped from the brush roller  4  by the flipper bar  24 . The operator is not required to clean the inclined surface  38  of sludge.  
      The brush roller  4  is rotated about a center line extending along a vertical plane. The flipper bar  24  is disposed near the vertical plane so that the effluent can be flipped from the brush roller  4  by the flipper bar  24  to be directed into the opening  28 .  
      The filter  30  may be installed in the opening  28  to extend the vicinity of a tangent L which extends tangentially to the brush roller  4  and the cylinder  6  at the contact position P, as shown in  FIG. 2 . In this case, the effluent can be filtrated by the filter  30  even if flipped from the brush roller  4  brought into contact with the cylinder at the contact position P to be directed to the vicinity of the tangent L. The effluent is then received in the tray  20  after filtrated by the filter  30 .  
      In a preferred embodiment shown in  FIG. 3 , the filter  30  is received and supported by a receiver  40  which comprises a perforated plate mounted on a pivotal member  41  for pivotally movement thereabout. The receiver  40  may comprise comb-shaped member or net. The effluent is discharged from the brush unit  2  through the opening  28  which is formed between the flipper bar  24 , the stay  26  and the cover frame  14 , to be filtrated by the filter  30 . The effluent then passes through the receiver  40  after filtrated, to be received in the tray  20  and discharged from the outlet port  22 . The filter  30  and the receiver  40  extend toward the stay  26  to be inclined downwardly with respect to a horizontal plane to keep the cover frame  14  being not splashed with the effluent flipped from the brush roller  4  by the flipper bar  24 .  
      In the embodiment, the filter  30  comprises a continuous web held by and fed from a holder which comprises a core  42  about which the filter  30  is wound so that a supply roll  44  can be formed by the filter  30 , the core  42  being disposed between and mounted on the side frames for rotation. The filter  30  may be arranged to be held by and fed from a holder other than the core  42 . The stay  26  has a reversed U-shaped channel cross section in which an inside space is formed, the filter  30  being held by the holder to be accommodated in the inside space. The brush unit  2  further includes a take up means comprising a take up shaft  46  disposed at the back of the cover frame  14  for taking up the used filter  30 . The take up shaft  46  may be rotated manually or automatically to take up the used filter  30 .  
      The filter  30  may comprise a sheet.  
      The filter  30  may comprise a perforated plate including perforations  47 , as shown in  FIG. 4 . The plate  30  may includes a surface wave-shaped having valley portions in which the perforations  47  are formed, as shown in  FIG. 5 . The plate  30  may take the form of stairs having horizontal steps  48  in which the perforations  47  are formed, as shown in  FIG. 6 . The filter  30  may comprise fabric, net or perforated film by which the surface of the plate is covered. In this case, the filter  30  may further comprise lubricant for lubricating the surface of the plate to prevent the fabric, net or perforated film from being adhered to the plate. It should be recognized that the adhesion is harmful to the filtration. In addition, the fabric, net or perforated film can be slidingly moved along the plate by the lubricant.  
      In other embodiment shown in  FIG. 7 , the filter  30  and the receiver  40  extend horizontally between the lower end portions of the stay  26  and the cover frame  14  which includes the curved surface  36  and the inclined surface  38 , as in the case of the apparatus of  FIG. 1 .  
      In other embodiment shown in  FIG. 8 , the filter  30  is directed to a guide member  50  from the supply roll  44 . The guide member  50  is mounted on the side frames to extend parallel to the stay  26 . The filter  30  is engaged with the guide member  50  to be turn down to the lower side from the upper side thereof. The filter  30  is then directed to the take up shaft  46  from the guide member  50  through a clearance formed between the stay  26  and the receiver  40 . The guide member  50  is disposed at the vicinity of the tangent L which extends tangentially to the brush roller  4  and the cylinder  6  at the contact position P so that the filter  30  can be installed in the opening  28  to extend to the vicinity of the tangent L, as in the case of the apparatus of  FIG. 2 .  
      In other embodiment shown in  FIG. 9 , the apparatus includes the tray  20  which includes an opening  52  through which the effluent is discharged from the brush unit  2  to be received in the tray  20 . The tray  20  further includes the filter  30  by which at least a portion of the opening  52  is covered, the effluent being filtrated by the filter  30 . The filter  30  comprises a sheet which includes holes  54  formed therein, as shown in  FIG. 11 . The tray  20  further includes Hooks  56  and  58  mounted on the side surfaces thereof and engaged with the holes  54  so that the filter  30  can be mounted on the tray  20  to be disposed in the opening  52 . The hooks  56  are fixed to the tray  20 . The hooks  58  are mounted on the tray  20  by hinge means  60  for pivotally movement about the hinge means  60 . The tray  20  may include the receiver  40  mounted thereon for removal to be disposed in the opening  52  so that the filter  30  can be received and supported by the receiver  40 .  
      In the embodiment, the effluent is received in the tray  20  after filtrated by the filter  30 . Accordingly, no sludge can be grown from the effluent received in the tray  20 . It is therefore not required to clean the tray  20  of sludge. The filter  30  can be removed from the tray  20  for disposal at intervals by the hooks  58  pivotally moved about the hinge means  60  to be disengaged from the holes  54 , the hooks  56  being then disengaged from the holes  56 .  
      The tray  20  may include the hooks  56  and  58  which are mounted not on the side surfaces but the end surfaces thereof and engaged with the holes  54  so that the filter  30  can be mounted on the tray  20  to be disposed in the opening  52 , as shown in  FIG. 12 .  
      In other embodiment shown in  FIG. 13 , the filter  30  comprises a continuous web held by and fed from a holder which comprises a case  62  mounted on an upper plate  64  by hinge means  66  for pivotal movement about the hinge means  66 , the upper plate  64  being mounted on the lower surface of the stay  26 . The filter  30  is folded and received in the case  62  and directed to the take up shaft  46  along the receiver  40  which is formed integrally with the case  62 . The receiver  40  extends from the case  62  to reach a position under the cover frame  14 . The case  62  is pivotally moved about the hinge means  66  when the filter  30  is received in the case  62 , as shown by broken line.  
      In other embodiment shown in  FIG. 14 , a standing portion  68  is formed between the case  62  and the receiver  40 . The upper plate  64  extends across the standing portion  68  and includes an end portion  70  which is bended downwardly along the standing portion  68  and then horizontally along the receiver  40  so that a passage can be formed between the upper plate  64  and the standing portion  68 . The filter  30  is directed along the receiver  40  from the case  62  through the passage. The end portion  70  cooperates with the standing portion  68  to prevent the effluent from entering the case  62 .  
      In other embodiment shown in  FIG. 15 , the filter  30  is directed from the case  62  which is disposed under the receiver  40 . The receiver  40  includes an edge with which the filter  30  is engaged to be turn up to the upper side from the lower side of the receiver  40 . The filter  30  is then directed along the receiver  40 . The filter  30  can be received in the case  62  through a lid which is not shown but formed in one wall of the case  62 .  
      As to the take up means comprising the take up shaft  46  for taking up the used filter  30 , positioning means should be formed on the take up shaft  46  for positioning the filter  30  when attached to the take up shaft  46 . The positioning means may comprise at least one of the protrusions  72  formed on the take up shaft  46 , as shown in  FIG. 16 . The filter  30  should include positioning means cooperating with the protrusions  72  of the take up shaft  46  to position the filter  30  when attached. For example, the filter  30  may include at least one of holes  74  formed therein, as shown in  FIG. 17 , so that the protrusions  72  can be engaged with the holes  74  to position the filter  30  when attached.  
      The brush unit  2  should include detecting means for detecting the decrease or exhaustion of the filter  30  held by the holder. The holder may comprise the case  62  in which the supply roll  44  is received, as shown in  FIG. 18 . The detecting means comprises a pair of fingers  76  formed of conductor and disposed in the case  62 , as shown in  FIG. 19 , so that the supply roll  44  can be put on the fingers  76 . The supply roll  44  comprises the filter  30  wound about the core  42 . It should therefore be recognized that the supply roll  44  or filter  30  is held by the fingers  76  and the case  62 . The fingers  76  are connected to an electrical circuit. In addition, the core  42  includes an outer surface  78  formed of conductor such as aluminum so that the fingers  76  can be connected to each other by the core  42  when the filter  30  is decreased or exhausted in the case  62  to detect the decrease or exhaustion of the filter  30  for electrical indication such as warning.  
      The fingers  76  may be disposed in the case  62  in which the filter  30  is folded and received, as shown in  FIG. 20 . The fingers  76  are connected to each other by a membranous member  80  which is formed of conductor such as aluminum and fixed to the end portion of the filter  30 . In this case, the membranous member  80  is lifted and separated from the fingers  76  by the filter  30  when the filter  30  is decreased or exhausted in the case  62  so that the fingers  76  are disconnected from each other to detect the decrease or exhaustion of the filter  30  for electrical indication such as warning.  
      The detecting means may comprise an optical sensor disposed in the case  62  to detect a light reflected from the filter  30 . This can also detect the decrease or exhaustion of the filter  30 .  
      The brush unit  2  should include adjustment means by which the flipper bar  24  is moved for adjustment of position. The adjustment means may comprise bolts  82  and  84 , as shown in  FIG. 21  and  FIG. 22 , the bolts  82  passing through the stay  26  to be threadedly engaged with the flipper bar  24 . The bolts  84  are threadedly engaged with the stay  26  to be engaged with the under surface of the flipper bar  24  so that the flipper bar  24  can be moved upwardly or downwardly by the bolts  82  and  84  for adjustment of position. The effluent can therefore be flipped toward the opening  28  from the brush roller  4  by the flipper bar  24  effectively. It should therefore be recognized that the flipper bar  24  is supported by the stay  26  for movement, the stay  26  including the adjustment means  82  and  84  mounted thereon. The stay  26  has a reversed U-shaped channel or L-shaped angle cross section in which an inside space is formed, the adjustment means  82  and  84  being accommodated in the inside space.  
      The stay  26  may include elongated slots  86  formed therein, as shown in  FIG. 23 , the bolts  82  passing through the slots  86  to be threadedly engaged with the flipper bar  24 . In the embodiment, the adjustment mean further includes bolts  88  by which the flipper bar  24  is moved along the slots  86  for adjustment of position.  
      The tray  20  may include absorbent material  90  comprising a sheet laid along the bottom of the tray  20  for absorbing the effluent for disposal, as shown in  FIG. 24 . The tray  20  may include solidification or gelatinization agent for solidifying or gelatinizing the effluent for disposal.  
      In other embodiment shown in  FIG. 25 , the tray  20  includes the opening through which the effluent is received in the tray  20 . The tray  20  further includes the filter  30  by which at least a portion of the opening is covered, the effluent being filtrated by the filter  30 . The filter  30  comprises the continuous web which is held by the holder comprising the case  62  in which the filter  30  is folded and received. The tray  20  further includes the take up means comprising the take up shaft  46  for taking up the used filter  30 . In addition, the tray  20  includes first and second end portions, the case  62  being disposed under and mounted on the first end portion which is disposed under the brush roller  4  and the flipper bar  24 . The take up shaft  46  is disposed in the second end portion of the tray  20 . The filter  30  is fed from the case  62  and engaged with the edge of the tray  20  to be turn up to the upper side from the lower side of the tray  20 . The filter  30  is then directed to the take up shaft  46  through a guide roller or bar  92  which is also disposed in the tray  20 . The filter  30  therefore extends to the vicinity of the tangent L which extends tangentially to the brush roller  4  and the cylinder  6  at the contact position P.  
      In other embodiment shown in  FIG. 26 , the filter  30  is wound about the core  42  so that the supply roll  44  can be formed by the filter  30 . The core  42  and the supply roll  44  are disposed under the first end portion of the tray  20  to keep the supply roll  44  from being stained with the effluent. In addition, the core  42  and the supply roll  44  are mounted on the first end portion of the tray  20  for rotation so that the filter  30  can be fed from the supply roll  44  and engaged with a guide roller or bar  94  which is mounted on the edge of the tray  20 . The filter  30  is then directed to the take up shaft  46  through the guide roller or bar  92 . The take up shaft  46  is disposed in the second end portion of the tray  20  and mounted on the side walls of the tray  20  for rotation.  
      In the embodiment of  FIG. 26 , the apparatus includes drive means  96  comprising an air or hydraulic cylinder which is connected to the brush unit  2  so that the brush unit  2  can be moved toward and away from the cylinder  6 . The tray  20  includes driven means driven in accordance with the movement of the brush unit  2  to make the take up shaft  46  take up the used filter  30 . The driven means comprises a lever  96  connected to the take up shaft  46  through a one way clutch  98 . The brush unit  2  includes a pusher  100  mounted thereon so that the lever  96  can be engaged with and pushed by the pusher  100  when the brush unit  2  is moved toward the cylinder  6 . The take up shaft  46  is therefore rotated by the lever  96  and the one way clutch  98  to take up the used filter  46 . The lever  96  is then returned by a return spring  102 , the take up shaft  46  being prevented from reversely rotated by the one way clutch  98 , when the brush unit  2  is moved away from the cylinder  6 .  
      The tray  20  may include the detecting means shown in  FIG. 18  or  FIG. 20  for detecting the decrease or exhaustion of the filter  30  held by the holder.  
      The brush unit  2  may be arranged to clean the cylinder  6  without utilizing the cleaning liquid. The cylinder  6  includes the outer surface to which impurities are adhered. In this case, a sheet or continuous web may be installed in an opening so that the impurities can be removed from the outer surface by the brush roller  4  to be directed into the opening and received by the sheet or continuous web, according to the invention.