SPRAY PIPE AND PRINTING PRESS ROLLER CLEANING DEVICE HAVING A SPRAY PIPE

Abstract

The invention relates to a spray pipe (1), in particular for a printing press roller cleaning device, wherein the spray pipe (1) extends at least in regions in a longitudinal direction and has a plurality of liquid discharge openings (5, 7, 11) which are formed in a wall of the spray pipe (1), wherein a first liquid discharge opening (5) extends with respect to a first direction and a second liquid discharge opening (7) adjacent to the first liquid discharge opening (5) extends in relation to a second direction, the second direction being different from the first direction in such a way that the direction vectors (6, 8) of the first and the second direction intersect in an atomizing region (10) which is spaced apart from the lateral surface (9) of the spray pipe (1).

Claims

1. A spray pipe (1) for a printing press roller cleaning device, wherein at least parts of the spray pipe (1) extend in a longitudinal direction and include a plurality of fluid discharge openings (5, 7, 11) formed in a wall of the spray pipe (1), wherein a first fluid discharge opening (5) extends with respect to a first direction and a second fluid discharge opening (7) adjacent to the first fluid discharge opening (5) extends with respect to a second direction, wherein the second direction differs from the first direction such that direction vectors (6, 8) of the first and second directions intersect in an atomizing region (10) distanced from a surface area (9) of the spray pipe (1).

2. The spray pipe (1) according to claim 1, wherein the spray pipe (1) has a plurality of the first fluid discharge openings (5) with associated second fluid discharge openings (7), wherein the respective direction vectors of the directions, relative to which the first and second fluid discharge openings (5, 7), are aligned and lie in a common plane.

3. The spray pipe (1) according to claim 1, wherein the direction vectors (6, 8) of the first and second direction intersect in the atomizing region (10) at an intercept point, the shortest distance of which to the surface area (9) of the spray pipe (1) is at most three times an inner diameter of the spray pipe.

4. The spray pipe (1) according to claim 1, wherein the direction vectors (6, 8) of the first and second direction intersect in the atomizing region (10) at an intercept point, the shortest distance of which to the surface area (9) of the spray pipe (1) is at least one half times an inner diameter of the spray pipe.

5. The spray pipe (1) according to claim 1, wherein an angle spanned between the first direction vector (6) and a line intersecting the first fluid discharge opening (5) and perpendicular to the surface area (9) of the spray tube (1) is between 10 to 50.

6. The spray pipe (1) according to claim 1, wherein an angle spanned between the second direction vector (8) and a line intersecting the second fluid discharge opening (7) and perpendicular to the surface area (9) of the spray tube (1) is between 10 to 50.

7. The spray pipe (1) according to claim 1, wherein the fluid discharge openings (5, 7, 11) each have a diameter of between 0.1 mm and 2.0 mm.

8. The spray pipe (1) according to claim 1, wherein the spray pipe (1) exhibits a length of between 0.5 m and 1.5 m and between 40 and 120 fluid discharge openings (5, 7, 11).

9. The spray pipe (1) according to claim 1, wherein the fluid discharge openings (5, 7, 11) are arranged in a straight line extending in the longitudinal direction of the spray pipe (1) on the surface area (9) of said spray pipe (1).

10. The spray pipe (1) according to claim 1, wherein discharge openings (5, 7, 11) are each formed as holes having a at least a substantially constant inner diameter.

11. The spray pipe (1) according to claim 1, wherein discharge openings (5, 7, 11) are adapted and configured on the spray pipe such that at a nozzle pressure of between 0.5 bar to 2.5 bar, jets of fluid exiting from the first and second fluid discharge openings (5, 7) are completely atomized at the point at which the direction vectors (6, 8) of the first and second direction intersect.

12. The spray pipe (1) according to claim 1, wherein the spray pipe (1) exhibits a first end region and an oppositely disposed second end region, wherein at least the fluid discharge opening (11) abutting the first or second end region extends along a direction at a direction vector which is at least substantially perpendicular to the surface area (9) of the spray pipe (1).

13. The spray pipe (1) of claim 1 comprising a fluid applicator of a printing press roller cleaning device for cleaning the rotating rollers of a roller train containing a plurality of successive printing press rollers.

14. The spray pipe (1) of claim 1 comprising a wash bar wherein the spray pipe is adapted and configured to moisten a wash cloth section of a wash cloth for cleaning the surface area (9) of a cylinder to be cleaned in the printing press.

15. The spray pipe (1) of claim 1 comprising a wash brush wherein the spray pipe is adapted and configured to moisten a wash brush for cleaning the surface area (9) of a cylinder to be cleaned in the printing press. cm 16. The spray pipe (1) according to claim 5, wherein the angle spanned between the first direction vector (6) and the line intersecting the first fluid discharge opening (5) and the perpendicular to the surface area (9) of the spray tube (1) is between 25 and 35.

17. The spray pipe (1) according to claim 6, wherein an angle spanned between the second direction vector (8) and the line intersecting the second fluid discharge opening (7) and the perpendicular to the surface area (9) of the spray tube (1) is between 25 to 35.

18. The spray pipe (1) according to claim 7, wherein the diameters of the fluid discharge openings (5, 7, 11) are between 0.3 mm and 0.5 mm.

19. The spray pipe (1) according to claim 1, wherein a number of fluid discharge openings (5, 7, 11) and the distance between the at least one first fluid discharge opening (5) and its adjacent second fluid discharge opening (7) is selected such that at the nozzle pressure of between 0.5 bar to 2.5 bar, jets of fluid exiting from the first and second fluid discharge openings (5, 7) are completely atomized at the point at which the direction vectors (6, 8) of the first and second direction intersect.

20. The spray pipe (1) according to claim 1, wherein the number of fluid discharge openings (5, 7, 11) and the first and second direction are selected such that at the nozzle pressure of between 0.5 bar to 2.5 bar, jets of fluid exiting from the first and second fluid discharge openings (5, 7) are completely atomized at the point at which the direction vectors (6, 8) of the first and second direction intersect.

Description

[0027] Shown are:

[0028] FIG. 1 a schematic and side view of an exemplary embodiment of the spray pipe according to the invention in sectional view;

[0029] FIG. 2 a plan view of the exemplary embodiment of the inventive spray pipe according to FIG. 1 in sectional view;

[0030] FIG. 3 an enlarged schematic view of a region of the spray pipe according to FIG. 1;

[0031] FIG. 4 an enlarged schematic view of a region of the spray pipe according to FIG. 2; and

[0032] FIG. 5 a schematic sectional view of the spray pipe according to FIG. 1.

[0033] The accompanying drawings show a spray pipe 1 serving as a fluid spraying device which comprises a channel-shaped fluid chamber 2 closed on the left side, for example by means of a corresponding stopper. On the right side, the spray pipe 1 comprises a fluid inlet 3, which is shown in detail in FIG. 4.

[0034] A plurality of fluid discharge openings 5, 7 are provided on the channel-shaped fluid chamber 2 in a spraying region 4.

[0035] The fluid discharge openings 5, 7 are divided into first fluid discharge openings 5 and corresponding adjacently arranged second fluid discharge openings 7. These two types of fluid discharge openings 5, 7 differ from one another in their respective orientation. Specifically provided is for the first fluid discharge openings 5 to extend relative to a first direction and the second fluid discharge openings 7 to extend relative to a second direction, wherein the second direction differs from the first direction in such a way that the direction vectors 6, 8 of the first and second direction intersect in an atomizing region 10 distanced from the spray pipe 1.

[0036] The embodiment depicted as an example in the drawings provides for an angle spanning 30 between the first direction vector 6 and a line intersecting the first fluid discharge opening 5 and perpendicular relative to the surface area 9 of the spray pipe 1. At the same time, an angle spanned between the second direction vector 8 and a line intersecting the second fluid discharge opening 7 and perpendicular relative to the surface area 9 of the spray pipe 1 is likewise 30, at least in the embodiment depicted in the drawings.

[0037] It can be seen in particular from the depiction in FIG. 4 that, in contrast, the last fluid discharge opening 11, which abuts fluid inlet 3, is at a 90 orientation with respect to the surface area 9 of the spray pipe so as to prevent a stream of fluid from being sprayed in an area outside of the atomizing region 10 via said fluid discharge opening 11.

[0038] In the embodiment depicted in the drawings, the distance between the fluid discharge openings 5, 7 on the surface area 9 of the spray pipe 1 amounts to approximately 11 mm. The distance is thereby selected such that at a nozzle pressure of between 0.5 bar to 2.5 bar, the jets of fluid exiting the fluid discharge openings 5, 7 are atomized as completely as possible in atomizing region 10.

[0039] The invention is not limited to the embodiment depicted in the drawings as an example but rather yields from an integrated overall consideration of all the features disclosed herein.

LIST OF REFERENCE NUMERALS

[0040] 1 spray pipe [0041] 2 channel-shaped fluid chamber [0042] 3 fluid inlet [0043] 4 spraying region [0044] 5 first fluid discharge opening [0045] 6 first direction vector [0046] 7 second fluid discharge opening [0047] 8 second direction vector [0048] 9 surface area [0049] 10 atomizing region [0050] 11 end fluid discharge opening