Abstract
The invention relates to a cleaning device for internal cleaning of drain or sewer pipes comprising at least one chain comprising several chain links, two end parts, to one of which one end of the chain/chains is/are fastened and to another of which another end of the chain/chains is fastened, which end parts each comprise a central opening, through which a rotatable element extends. At least one of the chain links of at least one chain of the cleaning device comprises a blade link connected to one of the chain links.
Claims
1. A cleaning device for internal cleaning of drain or sewer pipes comprising at least one chain comprising several chain links, two end parts, to one of which one end of the chain/chains is/are fastened and to another of which another end of the chain/chains is fastened, which end parts each comprise a central opening, through which a rotatable element extends, wherein at least one of the chain links of at least one chain of the cleaning device comprises a blade link connected to one of the chain links.
2. The cleaning device according to claim 1, wherein the cleaning device comprises 1-6 chains.
3. The cleaning device according to claim 1, wherein the blade link has a substantially rectangular outer form having at least one right-angled corner.
4. The cleaning device according to claim 1, wherein the blade link has a substantially elliptic outer form having at least one right-angled corner.
5. The cleaning device according to claim 1, wherein the blade link comprises two internal openings through which openings the chain link is correspondingly located.
6. The cleaning device according to claim 1, wherein the blade link has a thickness (T) and that the thickness T is 2-10 mm.
7. The cleaning device according to claim 1, wherein the blade link includes a hard metal and hardness of the hard metal is at least 300 HB.
8. The cleaning device according to claim 1, wherein at least one of the chains, advantageously all chains, comprises several blade links, each of which is attached to a chain link of the chain, correspondingly.
9. The cleaning device according to claim 1, wherein beginning at one end of the blade link a cut is formed for forming an opening for attachment of the blade link to the chain link by pressing the by the cut formed parts together at the cut when the blade link is at its place on the chain link.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In the following the invention is described in more detail by reference to the accompanying drawing in which
[0020] FIG. 1 shows schematically a simplified example of a cleaning device according to the invention,
[0021] FIG. 2A shows schematically a simplified example of a part of a chain of a cleaning device for internal cleaning of drain or sewer pipes according to the invention,
[0022] FIG. 2B shows schematically a simplified example of a blade link of a cleaning device for internal cleaning of drain or sewer pipes according to the invention,
[0023] FIG. 3 shows schematically a simplified example of a part of a chain with blade links for a cleaning device for internal cleaning of drain or sewer pipes according to the invention,
[0024] FIG. 4 shows schematically another simplified example of a blade link of a cleaning device for internal cleaning of drain or sewer pipes according to the invention and
[0025] FIG. 5 shows schematically a simplified example of a cleaning device according to the invention in a drain or a sewer pipe.
DETAILED DESCRIPTION
[0026] During the course of the following description of the FIGS. 1-5 corresponding reference numbers and signs will be used to identify corresponding elements, parts and part components unless otherwise mentioned. In the figures some repetitive reference signs may have not been repeated for clarity reasons.
[0027] In FIG. 1 is shown schematically a simplified example of a cleaning device 20 comprising one or more chains 25 formed of several chain links 10. In the example of the figure the cleaning device 20 comprises three chains 25. The cleaning device 20 comprises at least one chain 25. The cleaning device also comprises two end parts 22 in between of which the chains 25 extend and to which end parts 22 respectively ends of each chain 25 are fastened, for example by welding or by screw fastening. The end parts 22 comprise a central through opening 24, through which the rotatable wire rope or rotatable arm or rotatable cable or like rotatable element 27 extends, FIG. 5. The end part 22 also comprises at least one screw 23 that extends to the through opening 24 for fastening the end part 22 to the desired location on the rotatable element 27 so that the end parts 22 are at required distance L from each other on the rotatable element 27 and that the end part 22 is fastened non-rotatably in the rotatable element 27, FIG. 5. At least one of the chains 25, advantageously all chains 25, comprise at least one blade link 15, advantageously several blade links 15 that are attached to the chain links 10 of the chain 25, respectively, see also FIG. 3.
[0028] In FIG. 2A a simplified example of a part of the chain 25, which part comprises three chain links 10 without blade links 15. The chain links 10 have advantageously a substantially elliptic outer form.
[0029] In FIG. 2B is shown schematically a simplified example of a chain link 10 in position for attaching the blade link 15 to a chain link 10 of a chain 25 of the cleaning device 20, FIGS. 1 and 3. In this example the blade link 15 has a substantially rectangular outer form comprising two short sidewalls and two long sidewalls with right-angled corners. The outer form of the blade link 15 comprises at least one right-angled corner, advantageously all corners are right-angled. The inner form of the blade link 15 comprises two openings 17, through which openings 17 the chain link 10 is correspondingly located, FIG. 3, such that opposite sides of the chain link 10 go through the openings 17 of the blade link 15, correspondingly. The form of the opening 17 is advantageously circular. The blade links 15 are advantageously made by cutting from a hard metal plate, for example by laser cutting, such that the blade link 15 has a thickness T. Thickness T of the blade link 15 is advantageously 2-10 mm. The link structure 15 has thus a three dimensional substantially rectangular outer form with cleaning surface 15C of the chain link 15 formed by the thickness T dimension. The cleaning surface 15C circumvents thus around the chain link 15 as outer side surfaces of the rectangular form. Beginning at one end of the rectangular form a cut 16 is formed for forming an opening for attachment of the blade link 15 to the chain link 10, FIG. 3, by pressing the by the cut 16 formed parts 15A, 15B together at the cut 16 when the blade link 15 is at its place on the chain link 10, to form a substantially continuous blade link 15. The cut 16 extends longitudinally through the rectangular form of the blade link 15 but not all the way such that a one-piece form remains. The blade link 15 will thus be connected to the corresponding chain link 10 by pressing the parts 15A, 15B of the blade link structure against or towards each other at the cut 16 such that the cut 16 will be narrowed such that the cut 16 will not allow the blade link 15 to detach from the chain link 10. The blade link 15 is of hard metal which has advantageously hardness of at least 300 HB.
[0030] In FIG. 3 is shown schematically a simplified example of chain links 10 with connected blade links 15.
[0031] In FIG. 4 is a simplified example of a chain link 10 in closed position i.e. attached to a chain link 10, FIG. 3, without the corresponding chain link 10. In this example the blade link 15 has a substantially elliptic outer form. The inner form of the blade link 15 comprises two openings 17, through which openings 17 the chain link 10 is correspondingly located, FIG. 3, such that opposite sides of the chain link 10 go through the openings 17 of the blade link 15, correspondingly. The form of the opening 17 is advantageously circular. The blade links 15 are advantageously made by cutting from a hard metal plate, for example by laser cutting, such that the blade link 15 has a thickness T. Thickness T of the blade link 15 is advantageously 2-10 mm. The blade link 15 has thus a three dimensional substantially elliptic outer form with cleaning surface 15C of the chain link 15 formed by the thickness T dimension. The cleaning surface 15C circumvents thus around the chain link 15 as outer side surface of the elliptic form. Beginning at one end of the blade link 15 a cut 16 extending longitudinally through the blade link 15 is formed such that the cut 16 does not extend through the other end all the way and such that an opened structure for attachment of the blade link 15 to the chain link 10 is formed, FIG. 3, by pressing the by the cut 16 formed parts 15A, 15B together at the cut 16 when the blade link 15 is at its place on the chain link 10, to form a substantially continuous blade link 15. The blade link 15 will thus be connected to the corresponding chain link 10 by pressing the parts 15A, 15B of the blade link structure against or towards each other at the cut 16 such that the cut 16 will be narrowed such that the cut 16 will not allow the blade link 15 to detach from the chain link 10. The blade link 15 is of hard metal which has advantageously hardness of at least 300 HB.
[0032] In FIG. 5 is shown schematically a simplified example of the cleaning device 20 in a drain or a sewer pipe 30. The cleaning device 20 is located inside the pipe 30 such that the chains 25 during rotating the rotatable element 27 contact inner surface 31 of the pipe 30 at cleaning zone Z. The rotatable element 17 is connected to a rotating means 28, for example a rotating motor or rotating drive or pneumatic rotating means. The rotatable element 27 extends through the openings 24, FIG. 1, of the end parts 22. The end parts 22 are fastened to the desired location on the rotatable by the screws 23, FIG. 1, so that the end parts 22 are at required distance L from each other on the rotatable element 27, FIG. 3. The rotatable element 27 is moved in the pipe 30 in its axial direction so that the cleaning zone Z can be moved along the length of the pipe 30. By adjusting the distance L between the end parts 22 the circumferential location of the chains 25 can be adjusted to correspond the inner diameter D of the pipe 30 such that desired cleaning effect and length of the cleaning zone Z is achieved.
[0033] The invention is applicable in many different types of drain and sewer pipes of wide range of diameters.
REFERENCE SIGNS USED IN THE DRAWING
[0034] 10 chain link
[0035] 15 blade link
[0036] 15A, 15B parts of a blade link
[0037] 15C cleaning surface
[0038] 16 cut
[0039] 17 opening
[0040] 20 cleaning device
[0041] 22 end part
[0042] 23 screw
[0043] 24 opening
[0044] 25 chain
[0045] 27 wire rope
[0046] 28 rotating means
[0047] 30 pipe
[0048] 31 inner surface of the pipe
[0049] D diameter
[0050] T thickness
[0051] L distance
[0052] Z zone
