EP1563919A1 - Device for cleaning the surface of cylindrical bodies as rolls or rollers - Google Patents

Abstract

An assembly removes surface particles such as scale, metal residues or paint from the surface of a roller or drum. The assembly consists of two parallel arrays of fluid cleaning jets on beams suspended at their ends via twin forks by a lifting eye. The cleaning jets are closely associated with matching suction pipes.

Description

The invention relates to a device for cleaning the Surface of cylindrical bodies, such as rollers or Roll. Devices of this kind are, for example used to remove residues that occur during the Processing sheet or strip on the surface remain of rollers or rollers. In these Residues can be, for example, tinder or Metallic particles act firmly on the surface adhere to the respective roll or roller. such Residues typically fall at the deforming Processing metal sheets or strips. As well However, it may be at the residues also on firm the respective surface adhering paint particles or comparable substances that are used in the coating of Sheet metal or bands incurred.

A device of the above type is For example, from DE 198 48 174 A1 known. The known device is for cleaning rollers / and or Rolls in strip casters, rolling mills or similar Band process lines determined. For this purpose, the known device nozzles, which in itself along the cleaning rollers extending guides linear are held displaceable. The distance between the Cleaning nozzle and the roller to be cleaned is the according to the respective operating requirements. In addition, the traversing speed, with the the nozzle is moved along the roller, depending on the speed with which the tape is controlled in each case the rolls to be cleaned happens.

Another device for cleaning pulleys, the from a rolling mill emerging from a rolling mill go through before this is unwound is off JP 06-106213 A known. Also, this known device has a nozzle that along each to be cleaned Roller can be moved. From the nozzle becomes one Cleaning fluid jet directed to the roll, its pressure and alignment is chosen so that on the roll be peeled off adhering contaminants.

With respect to those described in JP 06-106213 A Their arrangement and function comparable pulleys are usually arranged at the outlet of equipment, in which one steel strip with paint or another Coating is provided. The roles in the Usually a rubber coating or a similar one elastic material existing coat on. To often strongly adhesive coating particles from its surface solvent must be used to remove.

Problematic in the above explained Each device is that of them Fluid jet freely enters the environment after being on the to be cleaned surface is taken. In this way can get the fluid and those taken from him, by the surface to be cleaned each separated particles freely in the environment of each to be cleaned distribute the cylindrical body freely. Especially This proves to be problematic when the Cleaning fluid with adhering to the body Lubricant residues mixed or it is in the Fluid is a solvent.

Based on the above-mentioned state of Technique was the object of the invention is a To create devices that are versatile lets and with the cylindrical body with clearly reduced risk of contamination of the environment clean the cleaning fluid.

This object is achieved by a device for cleaning the surface of cylindrical bodies, such as Rollers or rollers, which are solved with at least one nozzle for applying cleaning fluid to the to be cleaned Surface, with a surface to be cleaned attachable housing whose length is at least one part corresponds to the length of the cylindrical body and the one Outlet through which of the nozzle discharged cleaning fluid to be cleaned Surface meets, with the housing in the area of Outlet opening to the shape of the cylindrical Body is adapted to the case in the on the cylindrical body fitted state with this Area flush and in the radial direction liftable on the zu cleansing surface sits, and with at least one Absaugelement for sucking off in the cleaning operation on the surface to be cleaned meeting cleaning fluid is equipped, wherein the suction opening of the Suction element adjacent to the outlet opening of the housing is arranged.

The device according to the invention has a housing which in the region of its outlet flush to the put on cleansing surface. This is the Housing not pressed firmly on the surface in question, but can be raised. This way will that reaches the surface to be cleaned apt fluid jet in the area of the edges of the Discharge port jams, leaving the case from the itself is slightly raised. The on this Way between housing and surface to be cleaned pressed liquid film prevents the surface as a result of a between housing and surface during the Cleaning occurring relative movement is damaged. Instead, the housing can be essentially move without contact over the surface to be cleaned. This proves particularly favorable when with the inventive device rollers or rollers cleaned who will be around during the cleaning process Turn the rotary axis. The strength of the liquid film leaves easily adjust to the force with which the housing in the direction of the surface to be machined is charged.

By simultaneously in the area of the outlet openings the Suction openings of suction elements are arranged is ensured that there was no discharge of excessive Cleaning fluid amounts come out of the housing. Instead is by far the most prevalent by means of the suction element Amount of cleaning fluid discharged from the housing. The Invention allows in this way the controlled Removal of the cleaning fluid. The free distribution of finely atomized fluid mist is at a Safe device according to the invention prevented. Let it be itself with a device according to the invention safely Use solvent for cleaning.

A particularly easy to build construction inventive device results when the Suction element is designed as a tube that the Outlet opening laterally at least in sections limited.

Also with regard to the simplicity of manufacture and the versatility it is convenient if the Outlet opening of the device according to the invention is formed rectangular. In this case can be Align the suction element without problems so that it opens the cylindrical body mounted housing parallel to the axis is aligned with its longitudinal axis. This turns out then as particularly useful when the to be cleaned Cylinder body turns during the cleaning process and a Suction on the lying in the direction of rotation one side and another suction on the opposite Side of the outlet opening is arranged.

Another particularly practical embodiment of Invention is characterized in that the edge of Outlet at least partially through the Housing inside curved flow elements is formed. These flow elements support the damming of the Cleaning fluid in the edge region of the outlet opening, so that the desired "aquaplaning effect" by which the Housing floats on a liquid film, especially safely enters. In such embodiments of the invention, in which the suction elements are tubular, can be the flow elements expediently produce these suction elements.

Another, the safety of the removal of the Cleaning fluid from the housing in addition improving embodiment of the invention is characterized characterized in that the housing is in the area of Outlet opening corresponding to the circumference of the cylindrical body follows, wearing a seal that is in on the cylindrical Body attached state close to this. The Seal is preferably designed so that they regardless of the outer diameter of the too cleansing cylindrical body seals. In this way can with one and the same device according to the invention cylindrical bodies of different diameters be cleaned easily.

The effectiveness of the jet of fluid discharged from the nozzle can be optimized by that of the nozzle emitted beam at the cylindrical body mounted housing at a shallow angle to the directed cleansing surface of the cylindrical body is.

Basically, it is possible slot jet nozzles or comparable nozzles with over a certain To use longitudinal section extending nozzle openings. In particular, when the cleaning fluid with higher Pressure is to be applied, it proves, however, as convenient to arrange a plurality of individual nozzles in the housing. This can be a good cover to be cleaned Surface with the applied by the individual nozzles Rays can be achieved by having a group of Nozzles one in a first direction and the other group of nozzles directed in a different direction beam submit. In particular, when the outlet opening is formed at right angles, can be a special effective cleaning in this case, then achieve if the from the nozzles of a group of emitted rays in Direction of one on one side of the outlet arranged suction and are directed by the Nozzles of the other group emitted rays towards one on the opposite side of the outlet opening arranged suction element are directed.

To be as versatile as possible, is the length of the housing of a device according to the invention preferably only on a portion of the length of the Limited to clean cylindrical body. The Device can then move along the body to to grasp its entire surface. For this purpose can the device according to the invention with a guide be equipped to the housing slidably mounted is. Along this guide, the case can be manual or motor driven along the to be cleaned Cylinder body to be moved. In terms of versatile usability of the invention Device is particularly advantageous when the Guide a holder for releasably attaching to a Has storage for the body to be cleaned. This allows the device according to the invention as a mobile To use unity in many different places without that this requires complex conversions.

Fig. 1

eine Vorrichtung zum Reinigen von Walzen in einem Querschnitt;

Fig. 2

die Vorrichtung gemäß Fig. 1 in einem Längsschnitt;

Fig. 3

die Vorrichtung gemäß Fig. 1 und 2 in Betriebsstellung in einer ersten seitlichen Ansicht;

Fig. 4

die Vorrichtung gemäß Fig. 1 und 2 in Betriebsstellung in einer zweiten seitlichen Ansicht.

The invention will be explained in more detail with reference to a drawing illustrating an exemplary embodiment. Show it:

Fig. 1

a device for cleaning rolls in a cross section;

Fig. 2

the apparatus of Figure 1 in a longitudinal section.

Fig. 3

the apparatus of Figures 1 and 2 in the operating position in a first lateral view.

Fig. 4

the device according to FIGS. 1 and 2 in the operating position in a second lateral view.

The device 1 for cleaning rollers W has a Housing 2, which has a substantially in cross section triangular, pointed roof-like shape. The length LG of Housing 2 corresponds to a fraction of the length LW to cleaning rollers W.

In between the longitudinal walls 3,4 of the housing. 2 enclosed gusset 5 is a manifold 6 mounted, the paired nozzles 7,8,9,10 with Supplied cleaning fluid. The manifold 6 is over a Supply line 6a with a not shown Fluid supply connected to it under a high Feeds pressurized cleaning fluid.

On the opposite side of the gusset 5 of the housing 2, an outlet opening 11 is formed. The Outlet opening 11 has a substantially rectangular, in the longitudinal direction of the housing 2 itself extending form. Their long sides are limited by tubular suction elements 12,13, of the longitudinal walls 3,4 of the housing 2 are worn. The slit itself also in the longitudinal direction extending suction 14,15 of the tubular suction 12,13 are for Suction opening 11 directed.

The suction 12,13 have a circular Cross-sectional shape. That is how they form in particular in the region of their side facing away from the gusset 5, Sections lying below the suction opening Flow elements 16,17 out in the direction of the interior of the housing 2 are executed bent. The suction elements 12, 13 are not connected to one via a suction line 12a shown suction device connected in the Suction elements 12,13 incoming cleaning fluid sucks and a treatment feeds.

The supplied from the manifold 6 nozzles 7,8,9 are such aligned that of each of them Fluid jet F1 each approximately parallel to the side wall. 2 aligned at a shallow angle through the Outlet opening 11 occurs. The nozzles 7,8,9 each associated nozzles, of which in the figures, only the Nozzle 7 associated nozzle 10 can be seen, are in appropriately aligned so that of them each discharged fluid jet F2 parallel to the side wall 3 runs and in a remote from the fluid jet F1 Direction also at a shallow angle through the Outlet opening 11 occurs.

On the short sides of the housing 2 is the Outlet opening 11 through which the housing to these short Limited to the sides of the final walls 18,19. These walls 18,19 have at their outlet 11 associated Each edge over the width of the outlet opening 11 extending, circular segment-shaped recess 20, the radius r of the outer radius of the rollers to be cleaned W is adjusted. At the edge of the recesses 20 runs a Lip seal 21, which in on to be cleaned roll W mounted housing 2 close to the roll surface WO is applied.

On its ridge, the housing 2 carries a guide bush 22, whose passage opening 22a transverse to the longitudinal extent of the housing 2 is aligned. By the Through opening 22a of the guide bush 22 is a rod-shaped, rectilinear guide 23 out. The storage of the guide bush 22 on the guide 23 is in this case designed so that the housing 2 with the in him manually mounted elements in a linear running Movement along the guide 23 can be moved.

At both ends of the guide 23 is in each case with a Coupled bracket 24,25. The brackets 24,25 have one each coupled to the guide 23 Holding section and one of this at right angles bent back section on. In this way, the form Guide 23 and the brackets 24,25 a bracket whose free ends 26,27 are sleeve-like hollow.

To attach the device 1 to be cleaned Roller W, these free ends 26,27 on mandrels 28,29 set vertically aligned on the housings of the Roller bearings 30,31 are provided. By means of a Clamping screw 32, the brackets then firmly with the Thorns 28,29 braced, so that the guide 23 paraxial aligned to the axis of rotation of the roller W and in a through the axis of rotation of the roller W extending vertical plane is positioned above the roller W.

In this state, the housing 2 sits with his Outlet opening 11 delimiting the long sides tubular suction 12,13 flush on the zu cleaning surface M of the roller W on. It exists between the guide 23 and the guide sleeve 22 so much Game that the case 2 by a small amount in vertical direction can be raised. At the short Pages is the housing 2 through the lip seals 21st sealed against the environment.

The width of the outlet opening 11, the arrangement of tubular suction 12,13 and the recesses 20th on the short sides of the housing 2 with the at its edge arranged lip seals 21 are dimensioned so that the housing 2 on rollers W with different Diameters can be put on and still one flush seat with secure sealing lip seals 21 is guaranteed.

Under the roller W, a tub 33 is provided by the Roller W dripping down during the cleaning operation Cleaning fluid traps and to the not shown Processing device passes.

To cleanse yourself during the cleaning process slowly rotating roller W will be the case on the Surface of the respective roller W set. About the Supply line 6a then becomes pressurized Cleaning fluid, which is for example a Solvent or water, the manifold 6 supplied and delivered to the nozzles 7-10. The angle, below which the nozzles 7-10 their fluid jet F1, F2 respectively give, is chosen so that the fluid jets F1, F2 in a shallow, cutting angle right in front of you Exhaust openings 14,15 of the suction 12,13 on the Meet surface M. The of the fluid jets F1, F2 of The surface M detached contaminants are directly after the impingement of the fluid streams F1, F2 on the Suction elements 12,13 sucked and the suction line 12a fed to a treatment.

Since the impact area of the fluid jets F1, F2 near the Absaugelementen 12,13 is located, shoots on the Surface M impinging fluid with high Flow velocity in the direction of the at Suction elements 12,13 respectively formed Flow elements 16,17. As a result, forms at the Flow elements 16,17 a fluid jam, on which the housing 2 floats. Between the housing 2 and the surface M The roller W thus forms a thin fluid film through which it is ensured that the housing 2 during the Machining the surface M not touched directly. On This way, it is guaranteed that it will be despite the Relative movements between the along the roller W shifted housing 2 and in the meantime additionally rotating roll W to no damage of Surface M is coming. At the same time, he puts on the Surface M remaining fluid film sure that Housing 2 with the elements mounted in it at Minimal friction with minimal effort by hand along the guide 23 are moved over the surface M. can to uniformly clean the surface M of the respective roll W to achieve.

REFERENCE NUMBERS

1

Device for cleaning rollers

2

casing

3.4

Longitudinal walls of the housing 2

5

gore

6

manifold

6a

supply line

7-10

jet

11

outlet opening

12.13

suction elements

12a

suction

14.15

suction

16.17

flow elements

18.19

lateral walls

20

recess

21

lip seal

22

guide bush

22a

Through opening of the guide bush 22

23

guide

24.25

brackets

26.27

free ends of the brackets 24,25

28.29

mandrels

30.31

roller bearings

32

clamping screw

33

tub

F1, F2

fluid jets

LG

Length of the housing 2

LW

Length of rolls to be cleaned W

M

Surface of the rolls W

r

Radius of the recess

W

roll

Claims (14)

Device for cleaning the surface (M) of cylindrical bodies, such as rollers (W) or rollers, with at least one nozzle (7-10) for applying cleaning fluid to the surface (M) to be cleaned, with a housing (2) which can be placed onto the surface (M) to be cleaned and whose length (LG) corresponds to at least part of the length (LW) of the cylindrical body and which has an outlet opening (11) through which the nozzle (7) 10) discharged cleaning fluid to the surface to be cleaned (M), wherein the housing (2) in the region of the outlet opening (11) is adapted to the shape of the cylindrical body, that the housing (2) in the patch on the cylindrical body state sitting flush with this area and liftable in the radial direction on the surface to be cleaned (M), and with at least one suction element (12, 13) for sucking cleaning fluid which hits the surface (M) to be cleaned in cleaning operation, the suction opening (14, 15) of the suction element (12, 13) being adjacent to the outlet opening (11) of the housing (2 ) is arranged. Apparatus according to claim 1, characterized in that the suction element (12,13) is designed as a tube which limits the outlet opening (11) laterally at least partially. Device according to one of the preceding claims,
characterized in that the outlet opening (11) is rectangular. Device according to claims 2 and 3, characterized in that the suction element (12,13) extends in the mounted state on the cylindrical body axially parallel to its longitudinal axis. Device according to one of the preceding claims,
characterized in that the edge of the outlet opening (11) is formed at least in sections by curved to the interior of the housing flow elements (16,17). Device according to claim 5 and one of claims 3 or 4, characterized in that the flow elements (16, 17) are formed by the suction elements (12, 13). Device according to one of the preceding claims,
characterized in that the housing (2) in the region of the outlet opening (11), which follows the circumference of the cylindrical body, carries a seal (21) which rests in the mounted state on the cylindrical body close thereto. Device according to one of the preceding claims,
characterized in that the jet (F1, F2) emitted by the nozzle (7-10) is directed at the housing (2) mounted on the cylindrical body at a shallow angle to the surface (M) of the cylindrical body to be cleaned. Device according to one of the preceding claims,
characterized in that a plurality of nozzles (7-10) in the housing (2) are arranged. Apparatus according to claim 9, characterized in that one group of nozzles (7-9) emit a jet (F1) directed in a first direction and the other group of nozzles (10) emit a jet (F2) directed in another direction. Device according to claims 4 and 10,
characterized in that the jets (F1) emitted by the nozzles (7-9) of one group are directed towards a suction element (12) arranged on one side of the outlet opening (11) and those of the nozzles (10) of the other Group emitted rays (F2) in the direction of one on the opposite side of the outlet opening (11) arranged suction element (13) are directed. Device according to one of the preceding claims,
characterized in that the housing (2) is displaceably mounted on a guide (23). Apparatus according to claim 12, characterized in that the length of the guide (23) is at least equal to the length (LW) of the cylindrical body to be cleaned. Device according to one of claims 12 or 13,
characterized in that the guide (23) has a holder (24,25) for releasable attachment to a bearing (30,31) for the body to be cleaned.

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