EP2613890B1 - Application unit - Google Patents

Description

The present invention relates to a device for applying liquids to moving surfaces, a method for applying liquids and the use of the device, in particular for applying liquids to rollers, screens, web loops or the like.

In the manufacture of paper and cardboard or other web-like materials and in drying processes on surfaces, often corrugations, adhesions, sticky contaminants, deposits and soils occur on rollers, cylinders and clothing. The nature of the deposit and its composition can be very diverse and depends very much on the raw materials used and the auxiliaries used. Often, in the paper industry, e.g. sticky impurities called "stickies". The causes of this type of deposits usually come from the ingredients or the components of the raw materials used. These are usually adhesives, binders and dispersants.

For example, when using primary pulps, resin particles, fibers, and paper dust can occupy and clog cylinders, rollers, and fabrics, and especially in the latter reduce porosity.

By deposits of any kind on rollers, cylinders and fabrics occur, among other problems on the production. Downtime and cleaning times, production losses and loss of performance are the result of this. Furthermore, deposits on drying cylinders in paper or paper deteriorate Cardboard production the heat transfer and thus lead to significant energy losses during drying. For example, in the prior art the US 2010/0218909 A1 which relates to a cleaning device of moving surfaces.

In the prior art, the deposits are removed during standstill of the machine by means of cleaning chemicals, high pressure cleaners and scrapers. Here, acidic and alkaline detergents are used. These cleaners can cause corrosion and penetrate the bearing housings of the rollers, causing damage to the bearings. In addition, the use of these aggressive cleaning agents for occupational safety reasons may be questionable and it must be provided at least sufficient protection equipment of employees.

When spraying the parts with acidic and alkaline cleaners, inhaling the aerosols also poses a health hazard for the employees.

Another possibility is a continuous high-pressure cleaning of the coverings, e.g. in a paper / board machine or other plant for the production of web-like materials. Here, water is sprayed onto the fabric under high pressure. Deposits should be replaced by the strings. A problem here is the location of these units. At temperatures above 100 ° C, the environment places very high demands on the technology. Failures of the systems and increased service costs are the result. It can also come to a re-wetting track, which is not wanted. If the system fails, it can only be repaired during a machine downtime. Due to the high water pressure, the clothing can be damaged. This reduces the running time of the clothing.

Another possibility is the spraying of a passivation product. But this is also a traversing nozzle necessary. Again, the environmental conditions make very high demands on the technology to avoid nozzle failure. Often, there is only a very small space requirement for installation within the machine or another system for producing web-like materials. Due to the static necessity is a certain Cross-section of the traverse necessary. Often, however, hinders the installation of Traverse the further production.

By spraying the product with a certain distance and the very high peripheral speeds of the cylinders and clothing, a very strong atomization of the product occurs inside the machine or another system. This results in the product being sprayed undefined within the machine. The formed aerosols can endanger the health of the employees.

Based on this prior art, it is an object of the present invention, at least partially overcome the disadvantages known in the prior art.

This object is achieved by a device for applying a liquid active substance according to claim 1, a method according to claim 25 and the use of the device according to claim 28. Preferred embodiments of the claimed invention are the subject of the respective subclaims.

The device according to the invention for applying a liquid active substance to a preferably continuously moving surface comprises at least one dosing unit and an application unit. The invention is characterized in that the active substance is conducted to the application unit by means of the dosing unit and taken up here in a tampon, stored and applied to the moving surface. The tampon is configured as an open-pore network structure and forms a film on the moving surface as a function of the type and pressure of the active substance dosage, the tampon's porosity, the degree of saturation and the contact pressure on the moving surface.

Moving surfaces are understood in particular to be the surfaces of cylinders, rollers and clothing, as used, for example, in the paper industry. However, it is also within the meaning of the present invention that, for example, even moving plastic or metal webs form a corresponding surface and can be treated accordingly.

As a liquid active substance, which is applied by means of the device according to the invention on a moving surface, compositions are understood which are selected from a group comprising water or mixed solvent systems, for example with aliphatic and / or aromatic, linear and / or cyclic, polar and / or non-polar solvent fractions, salts of mono- or polyvalent ions, acids and / or alkalis, aqueous and oily liquids, in particular saturated or unsaturated open-chain or cyclic normal or isomeric hydrocarbons, polymeric linear and / or cyclic alkyl and alkyl-aryl and / or aryl-siloxanes and / or their copolymers and / or cationic or quaternary and / or amphoteric silicone products and / or derivatives, silicone oils, silicone greases, silicone surfactants, silicone oil dispersions, silicone fluids, polydimethylsiloxanes, polymethylphenylsiloxanes, oily suspensions , Oil emulsions, oil-in-water emulsions, water in oil emulsions, mineral oil, natural oils and fats, vegetable oil, animal oil, such as castor oil, coconut oil and / or tall oil and / or derivatives thereof, primary , secondary and tertiary or linear and / or branched, aliphatic and / or aromatic alcohols and / or derived therefrom ethers and / or esters, betaines, lecithins, phospholipids, protein solubilisates and / or modified products thereof, wax emulsions, anionic, nonionic, amphoteric and / or cationic surfactants, anionic, nonionic, amphoteric or cationic surfactant-like and / or polymeric fluorine-containing compounds , primary, secondary or tertiary alkyl and / or alkylarylamines, -diamines and / or polyamines, alkyl and alkylaryl-amine oxides, - imidazolinones, -morpholines, quaternary ammonium compounds, optionally also ethoxylated, saturated and / or unsaturated fatty acids and / or their salts with monovalent and / or polyvalent cations, esters, amines and / or amides of saturated and / or unsaturated fatty acids and / or fatty alcohols, alkyl and / or alkylaryl phosphates, phosphonates, sulfates-sulfonates, alkyl ether and / or or alkylaryl ether phosphates and / or sulfates, alkyl and / or alkyl aryl sorbitans and / or polyols, glycerides, alkyl and / or alkylaryl polyglycol ethe R and / or - esters, wetting agents, antistatic agents, lubricants, lubricants, emulsifiers, lipophilic and hydrophilic detergents, lipophilic and hydrophilic solvents, alcohols, saturated fatty alcohols, unsaturated fatty alcohols, saturated fatty acids, unsaturated fatty acids, fatty acid monoalkyl esters, fatty acid amides, fatty acid monoalkylamides, mono- or Polyesters of saturated or unsaturated mono- or polybasic carboxylic acids, wax alcohols, glycols, benzene, isopropanols, toluene, aliphatics, glycerides, as well as anionic, nonionic, amphoteric and / or cationic synthetic and / or natural polymers in dissolved and / or dispersed form, homo- and / or copolymerized polyamines, polyesters, polyacrylates and / or Polyalkylenglycole and / or Alkylpolyglycole, combinations thereof and the like. Furthermore, corrosion inhibitors, biocides and activators and / or catalysts, UV and electron beam activatable reactive precursors of release products can be applied.

As a metering unit is understood according to the present invention, a delivery system for the active substance. According to one embodiment, the dosing unit comprises a pipe or conduit system for the liquid active substance, which for example leads from a storage container to the application unit and supplies the tampon with the liquid active substance. For this purpose, the pipe system has, in particular in the region of the tampon, at least one porous section or (transverse) openings, from which the active substance is introduced into the tampon. According to a particularly preferred embodiment, the porous sections or openings are distributed uniformly over the length of the tampon, in particular to achieve a uniform impregnation of the tampon. Alternatively, the dosage can be varied over the length of the tampon to apply more or less active substance, for example, in zones of increased contamination or deposition tendency of the moving surface.

According to a further particularly preferred embodiment, the dosing unit comprises a supply device by means of which the liquid active substance is conveyed continuously to the application unit. However, it is also within the meaning of the present invention that, for example, the tampon is only temporarily supplied with active substance and thus only a certain amount of the active substance is applied to the surface.

According to a further particularly preferred embodiment, the dosing unit comprises a pipe system in which the liquid active substance is supplied in excess with a first line and the remainder of the liquid active substance not discharged to the tampon is returned to a storage container via a second line becomes.

The liquid active substance is preferably pumped or circulated in this embodiment in a circuit, for which purpose the reservoir is equipped with a temperature control and / or a mixing device. This will be among other things, the accuracy of the mixing ratio and the temperature of the supplied liquid active substance increased or adjusted.

A tampon according to the present invention is understood to mean a body which is produced in particular from threads, cords, strands, fibers, in particular fabrics, braids, laminations, pressings or networks thereof, has an open-pored network structure and according to a particularly preferred embodiment as a sponge, Felt, nonwoven, combinations thereof or the like is formed.

According to a further embodiment, the tampon can be designed in at least two parts, wherein the tampon in particular has at least one tube with openings around the outside of which a fabric structure is arranged. This may be done, for example, by attaching around a PTFE tube with a round or square cross-section a fabric made of a material such as is used in industry for gasket packings (bushings). Such gaskets are made predominantly of materials such as graphite, iron, steel, and / or asbestos, aramid, glass, carbon and / or PTFE fibers. By using such a material, the abrasion properties of the tampon could be adapted to the respective conditions of use.

Alternatively, the tampon can also be formed from a core material in which a flow path with openings for the fluid / active substance is integrated and around which a fabric structure is arranged.

With regard to the orientation of the openings, it should be noted that these do not necessarily have to be aligned with the support side of the tampon to form a coated surface, but that they can be arranged in any direction, depending on the material / fabric to be used. In particular, the alignment on the back of the tampon appears to promote a uniform distribution of the fluid.

This tampon is received according to a further, particularly preferred embodiment in a holder and is connected to this force, friction, positive and / or cohesive.

According to a further particularly preferred embodiment, at least individual sections of the dosing unit are accommodated in the holder of the tampon, wherein the dosing unit or the pipe or pipe system is preferably arranged on the rear side of the tampon, ie on the side of the tampon facing away from the moving surface , Sections or the entire pipe system are integrated in the area of the tampon in this.

Alternatively, parallel to the tampon, a supply line can be arranged, from which via discharges the fluid / active substance is applied into the tampon. For this purpose, in particular cannula-shaped leads can be used, which are arranged at a predetermined distance along the main extension direction.

According to a further preferred embodiment, the device according to the invention is connected to or with a support system, in particular a traverse, which preferably extends over the entire width of the moving surface and optionally beyond. This has the particular advantage that at large widths, for example, over ten meters, the device according to the invention can be supported so that a deflection of the device can be avoided or at least compensated. It should be noted that the application unit should be arranged as evenly as possible over the entire web width, in particular to ensure a uniform film application.

According to a further particularly preferred embodiment, the device according to the invention is combined with at least one cleaning system, in particular a scraper or scraper system. In this case, according to a first embodiment, the application unit and the cleaning system are arranged together on a traverse, wherein preferably the connection between the traverse and the application unit or the cleaning system, in each case by a correspondingly adapted adapter. Alternatively, a separate arrangement on, for example, two trusses is conceivable. In addition, the Cleaning device arranged according to a further particularly preferred embodiment in the direction of movement or running of the surface in front of the application unit. In this way, in particular damage to the application unit or the tampon can be avoided or at least reduced.

According to a further preferred embodiment, at least the application unit is arranged tiltable about a pivot axis with respect to the surface. In addition, the cleaning system can be tiltably arranged about an independent or another, common axis with the application unit.

Furthermore, according to a further, particularly preferred embodiment, the application unit is applied or pressed about the axis on the moving surface by means of a Anpresssystems such as a pressure or loading hose, for lifting the application unit, for example, a lifting spring is provided by the Anpresssystem in applied state is biased and so lifts off the application unit when reducing the contact pressure. Alternatively, a hydraulic or pneumatic system can also be used for the lifting spring. The same applies to the contact pressure system, which according to a particularly preferred embodiment is a U-shaped clamped loading hose, which is inflated with air, in particular compressed air and thereby applies the application unit on the moving surface.

As lift-off spring, according to a further particularly preferred embodiment, single or multi-folded sheet metal or metal strips are used which are pretensioned at least when the application unit is created and generate a corresponding restoring force. It should be noted that these lift-off springs can be designed both as compression springs and as tension springs, and this depends on the particular application and arrangement. The lifting spring preferably serves to ensure that the application unit lifts off the moving surface, for example when the loading pressure in the loading hose drops.

According to a further particularly preferred embodiment, the application unit and / or the cleaning system, in particular the scraper are arranged resiliently on the moving surface or resiliently mounted.

According to a further preferred embodiment, at least the application unit and / or the cleaning system along at least one longitudinal axis arranged transversely movable with respect to the surface and driven so that they can be reciprocated over the web width in a predetermined amount, in particular continuously. This, also referred to as traversing, longitudinal movement in particular of the applicator is used to support the uniform film order or to improve the quality of the film order. In this case, in addition to electric motors and hydraulic drives, especially longitudinal drives can be used.

According to a further particularly preferred embodiment, the application unit and in particular the application unit pad is arranged with respect to the moving surface such that the distance between the pad surface facing the surface and the moving surface is greater than the distance between the scraper and the moving surface lifted state.

By arranging the application unit or the cleaning system on a base plate, which is preferably part of the traverse, both the application unit and the cleaning system can be arranged so that they can be removed laterally over the moving surface. This has particular advantages for changing, retrofitting and installing the corresponding device or system.

For this purpose, in particular, a change and fixation rail can be used, which provides the longitudinal displaceability by means of a corresponding profile and, at least in one position, possibly also fixes the inserted unit using additional elements.

According to a further particularly preferred embodiment, the applicator unit according to the invention is in individual over the width of the moving web Segments segmented or divided. In this way, in particular a differentiated application of the active substance over the width of the moving surface can be achieved.

The object of the present invention is also achieved by a method in which the application of a liquid active substance to a moving surface by means of the device described above and in particular the step of impregnation of the application unit, in particular the tampon with the liquid active substance, the placement of the application unit on the moving surface to form a film and then lift off the applicator unit.

In addition, according to a further particularly preferred embodiment, the method according to the invention comprises a continuous supply of the liquid active substance to the application unit, in particular to the tampon, wherein according to a further particularly preferred embodiment the liquid active substance is circulated and in particular tempered and / or mixed in a storage container , This is done in particular by a pipe system which uses at least two pipes or hoses and wherein at least one / is used as a flow and a / as a return.

According to a further particularly preferred embodiment, the method comprises a control with which it is ensured that when the application unit is combined with a cleaning device, the application unit is applied to the moving surface only after the cleaning device has been applied.

The present invention also includes the use of the present invention for keeping moving surfaces of cylinders, rollers, fabrics (for example screens, especially wet and dry screens) or other moving webs, in particular as part of a device for paper, board or board production or for sheet metal or pressboard production, deposits, adhesions, accumulations or soiling.

Based on the device described above and the claimed method to prevent or at least reduced by the present invention, especially in the field of paper, board and board production, the covering of rollers, cylinders and clothing and thus to a better run of the paper or Board machine (runnability optimization) or another plant for the production of fibrous materials. In this case, the claimed invention can keep rotating rolls or cylinders or a moving web, preferably in paper machines or other web-processing machines free from stickies and other contaminants, or at least reduce this sticking or soiling. Particularly advantageous is the use of the device according to the invention or of the method for the treatment of calender or calender rolls.

Another and particularly preferred application of the present invention is the treatment of cylinder surfaces in dryer sections. The applied liquid active substance prevents or at least reduces the adhesion of fibers, fines, particles, fillers, conglomerates, impurities and sticky substances. This has the advantage that e.g. The surface temperature of the cylinder can be increased and thus the system has a higher drying performance. As a result, e.g. the production speed can be increased without causing sticking or sticking of the web, as known in the art. This is reflected in an increase in production.

Further advantages of the device according to the invention are that the liquid active substance is not sprayed, the mounting mass is as small as possible and that, in particular according to a preferred embodiment, the device without electrical components such as e.g. Engines and thus a maintenance-free use under extreme environmental conditions is possible.

In the case of applying to the drying cylinders of a paper machine to increase the speed, usually a predetermined temperature curve is set. Here, a lower surface temperature is set in the first cylinders of a dryer section in order to avoid sticking and thus plucking of the paper web on the cylinder.

The application of the liquid active substance can, inter alia, provide a higher drying energy and thus set higher surface temperatures. This results in the higher drying performance and higher production capacity due to speed increase.

The compact design allows the installation of the invention even under very tight conditions, as they are very often present in practice.

The type of application produces no aerosols which can be inhaled by the employees. Thus, a threat to the staff is excluded. The product is applied specifically to the place where it is used.

Thus, with the help of this system, cylinders, rolls, fabrics and web-like materials of all kinds can be effectively treated with a passivating agent.

In experiments, a closed film could be applied to the experimental cylinder. The dosage can be varied by the pump capacity and the size of the holes. In addition, the job unit can be clocked on and off. Through these measures, the dosing order could be controlled as desired.

The invention will be described below with reference to various embodiments, it being understood that the invention is not limited to the embodiments shown here.

Figur 1a:

Eine erste Ausführungsform der Auftragseinheit in Kombination mit einem Schaber als Reinigungssystem;

Figur 1b:

Eine alternative Ausführungsform der Auftragseinheit in Kombination mit einem Schaber aus Figur 1;

Figur 2:

Eine zweite Ausführungsform der Auftragseinheit mit einem getrennt angeordneten Schaber als Reinigungseinheit;

Figuren 3a und 3b:

Detaildarstellung der Auftragseinheit in der Seitenansicht und Draufsicht;

Figur 3c:

Draufsicht einer alternativen Auftragseinheit, wie sie in Figur 8a in der Seitenansicht dargestellt ist;

Figuren 4a und 4b:

Darstellung der Ausführungsform gemäß Figur 1a in angelegtem und abgehobenem Zustand;

Figuren 4c und 4d:

Darstellung der Ausführungsform gemäß Figur 1b in angelegtem und abgehobenem Zustand;

Figur 5:

Eine weitere Ausführungsform der Auftragseinheit im angelegten Zustand auf einer Bespannung mit Walze;

Figur 6:

Eine weitere Ausführungsform der Auftragseinheit im angelegten Zustand auf einer Bespannung mit Gegenelement;

Figuren 7a und 7b:

Seitenansicht einer Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 8a und 8b:

Seitenansicht einer weiteren Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 9a und 9b:

Seitenansicht einer weiteren Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 10a und 10b:

Seitenansicht einer weiteren Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 11a und 11b:

Seitenansicht einer weiteren Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 12a und 12b:

Seitenansicht einer weiteren Auftragseinheit mit festen Auftragselement bzw. Wechselschiene für das Auftragselement;

Figuren 13a und 13b:

Eine weitere alternative Ausführungsform der Auftragseinheit mit Schaber in angelegter bzw. abgehobener Position.

To show:

FIG. 1a

A first embodiment of the application unit in combination with a scraper as a cleaning system;

FIG. 1b

An alternative embodiment of the application unit in combination with a scraper FIG. 1 ;

FIG. 2:

A second embodiment of the application unit with a separately arranged scraper as a cleaning unit;

FIGS. 3a and 3b:

Detail of the application unit in the side view and plan view;

FIG. 3c:

Top view of an alternative order unit, as in FIG. 8a is shown in side view;

FIGS. 4a and 4b:

Representation of the embodiment according to FIG. 1a in applied and off-hook condition;

FIGS. 4c and 4d:

Representation of the embodiment according to FIG. 1b in applied and off-hook condition;

FIG. 5:

Another embodiment of the application unit in the applied state on a fabric with roller;

FIG. 6:

A further embodiment of the application unit in the applied state on a fabric with counter element;

FIGS. 7a and 7b:

Side view of an application unit with fixed application element or change rail for the applicator element;

FIGS. 8a and 8b:

Side view of another application unit with fixed application element or change rail for the applicator element;

FIGS. 9a and 9b:

Side view of another application unit with fixed application element or change rail for the applicator element;

FIGS. 10a and 10b:

Side view of another application unit with fixed application element or change rail for the applicator element;

FIGS. 11a and 11b:

Side view of another application unit with fixed application element or change rail for the applicator element;

Figures 12a and 12b:

Side view of another application unit with fixed application element or change rail for the applicator element;

Figures 13a and 13b:

Another alternative embodiment of the application unit with scraper in applied or lifted position.

According to the present invention, an application unit 1 is claimed, which comprises a liquid active substance as a film on the roller or cylinder 3 (FIG. FIG. 1 a) or a moving web ( FIG. 5 and 6 ). This application unit 1 wets the circumferential surface of the rotating roller 3, the rotating cylinder or the surface of the moving web 4 substantially uniformly, wherein the liquid active substance changes the surface such that in particular dirt particles or product residues no longer adhere to the surface.

A preferred embodiment of the application unit 1 is the combination with a scraper system 2, whereby in addition a mechanical cleaning of the roller surface is realized in order to clean the one hand, the surface to be kept clean and on the other hand to keep dirt away from the application unit to their function over a long time guarantee.

The application unit 1 is supplied according to the present invention, a liquid active substance in a tube or a tube 11 and entered, for example via transverse openings (not shown) in a tampon 12. The tampon 12 soaks up with the supplied liquid active substance and delivers it to the surface of, for example, the roller 3 or the web 4 ( FIGS. 1a . 5 and 6 ).

The application unit 1 according to the embodiment shown here comprises a dosing unit whose hoses or tubes 11 are accommodated together with the tampon 12 in a holder which is in particular realized from two mutually displaceable angles 13 and 14, the tampon 12 and the tubes / Tubes 11 are fixed in a working position when pushed together and the two angles 13 and 14 for changing, cleaning or inspecting the tubes or tubes 11 and the tampon 12 are pushed apart. The two angles are fixed in the desired position by screws 15 in slots. One leg of an angle is connected to one or more bearings 16 which, together with an axis 17 lying parallel to the roll or cylinder axis, form a joint around which the application unit 1 is pivoted and thus the tampon 12 is pressed against the roller or the cylinder 3 or the web 4 can be put on or taken off ( FIG. 1a ).

According to the embodiment shown here, the axis 17 is formed as a rod and fixed on the base plate 18 via the bearing 16. Characterized in that the axis 17 is formed as part of the base plate 18, the application unit 1 can be pulled laterally out of the device on this axis 17.

The application of the application unit 1 is carried out according to the embodiment shown here by a loading hose 19 which is acted upon by compressed air or another medium. The lifting takes place by a lifting spring 110 or alternatively by a lift-off hose. The lifting spring consists for example of a one or more folded metal strip 110, which is firmly clamped on one side and resiliently applied at the other end ( FIG. 1 a) ,

According to the in FIG. 1a In the illustrated embodiment, the device has a scraper unit 2 upstream of the application unit 1 in the direction of travel. The scraper unit 2 consists of at least one scraper holder 21 and one scraper blade 22. The scraper holder 21 allows the scraper blade 22 to be applied and pivoted to and from the rotating roller 3 and the rotating cylinder 3, respectively.

The scraper device and the application unit are mounted on a common beam 50 in accordance with this illustration, wherein the application unit and the scraper device are displaceable relative to one another in their position. According to this embodiment, this embodiment is also suitable for retrofitting to existing scraper bars 50 instead of the old scraper holder. In this case, an adapter strip 6 is used for holding the application unit 1 in a suitable position to the roller or to the cylinder 3 or to the web 4. A second adapter strip 7 is slidably designed with oblong holes 71, fastening screws 72 and adjusting screws 73 for the adjustable positioning of the scraper holder 21.

In FIG. 1b an alternative embodiment of the device is shown in which in particular the contact pressure of the scraper is not by a spring, but by a hose 27 'takes place. For appropriate construction in the FIG. 1 b, the same reference numerals as in FIG. 1 a used. The same applies to the following figures.

FIG. 2 shows an alternative embodiment of the application unit, wherein the lifting spring 111 is disposed opposite to the tampon 12. According to the embodiment of FIG. 2 the scraper device 2 and applicator unit 1 are mounted on separate beams 50 and 51 and each beam is adjustable in position and distance to the roller or to the cylinder 3 or 4 web. With regard to this embodiment, however, it should also be noted that, in particular, the beam 51, which may also be designed as a traverse, can be rotated through 180 ° and, for example, would then be oriented in the direction of the scraper blade in this situation. In principle, however, it should be noted here that the scraper device 2 and the application unit 1 are independent components which are independent of one another in their position relative to the roller.

According to the in the FIGS. 3a and 3b illustrated embodiment, one or both of angles 13 and 14 are segmented by slots 130 and 140 or as individual pieces, in particular to achieve greater flexibility in the direction of the rollers or cylinder axis and / or transverse to the web.

In addition, in the figures, the circulating arrangement of Dosiereinreichung is shown, in which a supply line 112 and a return line 113 can be seen, as shown in FIG FIG. 3b are connected on the right side.

Figure 3c shows the top view of an alternative application unit, as inter alia, in the FIG. 8a is shown in the side view. In this case, the cannula-shaped discharge lines 81, the supply line 82, the screwing of the supply line 83 and the tampon 12 can be seen.

The FIGS. 4a and 4b show the arrangement of the device according to FIG. 1a in the created and lifted state. Due to the adjustment possibilities in the lifted position 4b, the distance A1 of the doctor blade 22 to the roller or to the cylinder 3 or to the web 4 (FIG. Fig. 5 or 6 ) set lower than the distance A2 of the tampon 12 to the roller or to the cylinder 3 or to the web (not shown here). Thus, in particular large foreign bodies that pass the scraper blade 22 in the lifted state on the surface to be cleaned in the running direction can also pass through the tampon 12 without this being damaged. Foreign objects that are so large that they are the lifted scraper blade 22 can not happen, are the same logically kept away from the tampon 12, whereby this is protected by the scraper system 2 both in applied, as well as in the raised position against contamination and foreign objects.

The Figures 4c and 4d show the arrangement of the device according to FIG. 1b in the created and withdrawn state according to the FIGS. 4a and 4b ,

FIG. 5 shows by way of example an application unit 1, without an additional cleaning device such as a scraper, which wets a moving web 4, wherein the web runs in the form of a roll 31. The tampon 12 touches the web 4 while it is on the roller 31. The moving web 4 is, for example, a wire which supports and guides the web-shaped product 41, for example a paper web, as it passes through a plurality of cylinders 3. The application unit 1 wets the product-contacting side of the web 4.

Fig. 6 also shows an application unit 1, which wets a moving web 4, wherein the moving web 4 is not supported on a roller 31, but on a special support shoe 8. Also in this embodiment, the application unit is alone, ie arranged without a further cleaning device.

The Figure 7a shows in a side view the embodiment of the application unit, as these in the FIG. 1b was used, wherein the tampon 12 is supplied via the tubes 11 with the order fluid and the tampon 12 received in a double clamp, which is fixed with the screw 15. About the bearing and the axis arranged thereon, the application unit is pivotally movable, wherein the contact pressure by means of the loading hose 19 and the lifting takes place by means of the spring 111, by the reference numeral 18, the base plate is labeled.

FIG. 7b shows an alternative embodiment in which the application unit with the plate 75 is arranged receivable in an exchange and fixing rail 74, wherein the change and fixing rail 74 is disposed on the counter plate 76. With this arrangement, one obtains the advantage to the embodiment according to Figure 7a in that the application unit can be pulled laterally out of the holder and thus a simple device for maintenance or exchange is provided. After insertion the applicator unit is connected with corresponding fixing elements with the change and fixation rail 74 at least non-positively. Furthermore, further securing devices can be provided which prevent inadvertent release of the connection. Identical elements have the same reference numerals.

It should also be noted that the Figures 1 to 7b embodiments shown not show the invention integrated in the tampon sections of the pipe system of the metering unit.

The FIGS. 8a and 8b show a further embodiment of the application unit in a with respect to the FIGS. 7a and 7b chosen representation. The FIGS. 8a and 8b differ essentially by the exchange and fixing rail 74. In the application unit shown here, the tampon 12 is supplied via a staggered supply system with the fluid, which is provided via the supply line 82 in the direction of arrow 86. The lines are connected via the connecting elements 83 and connected to the clamping jaws 84 and 85 on the underside shown here with the application unit. Via the connecting lines 81, which are introduced into the tampon 12 in the form of cannulas, the fluid is applied to the tampon. By means of the screw 87, the clamping device of the tampon can be fixed and, according to a further preferred embodiment, the position of the tampon can be determined.

The FIGS. 9a and 9b show a further embodiment of the application unit in a with respect to the FIGS. 7a and 7b chosen representation. The FIGS. 9a and 9b differ essentially by the exchange and fixing rail 74. According to the here in the FIGS. 9a and 9b In the embodiments shown, the supply of the fluid into the tampon 96 takes place via the channel 91, which is arranged in a core region 92 of the tampon 96 and has connecting channels 95 to the outer region 93 of the tampon 96. According to a particularly preferred embodiment, the tampon can be made in two parts wine, wherein the core 92, which may also be elastic, is covered with a fabric 93. Such a fabric may, among other things, have particular strength properties against wear due to mechanical stress, and in particular Material as it is used, inter alia, for cloth bushings for pumps or the like. Furthermore, such a tampon is not limited to a square cross-sectional shape, but this can of course also be round, rectangular or polygonal executed. By means of the screw 94 is the Clamping device of the tampon fixable and determinable according to a further preferred embodiment, the position of the tampon.

The Figures 10a and 10b show a further embodiment of the application unit in a with respect to the FIGS. 7a and 7b chosen representation. The Figures 10a and 10b differ essentially by the exchange and fixing rail 74. The embodiment shown here shows a tampon 96 according to the basic structure of the FIGS. 9a and 9b wherein the fabric here has a round cross-section.

The Figures 11 a and 11b show a further embodiment of the application unit in a with respect to FIGS FIGS. 7a and 7b chosen representation. The Figures 11a and 11b differ essentially by the exchange and Fixierschiene 74. The in the Figures 11a and 11b Application unit shown reveals a tampon 60, which is also made in two parts. Here, a tube 62 is received with openings 63 in a fabric 61, wherein the tube is made in particular of polyhalogenolefins, such as PTFE material. Of course, other plastics such as polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyurethanes, polyethylene terephthalate and the like can be used. It should also be noted that the tampon 60 in this embodiment again square - as shown - rectangular or round in cross-section can be performed. By the reference numeral 64, in turn, a fixing screw for the terminal is shown, which can be used in particular for the positioning of the tampon. In general, it is also within the meaning of the present invention that instead of the clamping device, other suitable fastening options for the tampon, such as form-fitting, fabric-bonded and / or non-positive connections, are used.

The Figures 12a and 12b show a further embodiment of the application unit in one of with reference to the FIGS. 7a and 7b chosen representation. The Figures 12a and 12b differ essentially by the exchange and fixing rail 74. The embodiment shown here shows a pad 65 according to the basic structure of the Figures 11a and 11b wherein the fabric here has a round cross-section.

With the Figures 13 A and 13b show a further embodiment of the present invention in which the application unit including the tampon 96 is combined in a very compact manner with a scraper 202. It shows the FIG. 13a the applied to a roll surface device and the FIG. 13b the lifted position of the device.

The application unit is in accordance with the embodiment shown here again connected via a change and fixation rail 74 with a tilting traverse, which can be both actively raised via the hoses 19, as well as be pressed. The application unit is connected to the changing and fixing rail 74 via the plate 75, the screw 203 being used not only to fix the clamping device for the tampon 96, but also the scraper holder with the plate 200 and the exchange and fixation rail 201 to fix. Furthermore, according to the embodiment shown here, the problem is solved that the scraper is shortened over the scraper travel time and thus the pad is pressed more strongly on de surface. To solve this problem, the tampon 96 is biased by a spring 204, wherein the bias by means of the adjusting screw 205 is adjustable. In FIG. 13b This is particularly evident, since the unit is lifted from the roll surface and thus the tampon 96 is extended to the outermost position. In addition to a spring, it is of course also within the meaning of the present invention to carry out this particular as a coil spring, rubber or spring plate.

The use and the use of such a system of adjustment of an application element, in particular a tampon is not limited to the arrangement shown here, in particular with respect to the combination with a scraper.

Claims (15)

1. An apparatus for applying a liquid active substance onto surfaces moving in a circulating fashion such as, for example, surfaces of cylinders (3), rolls, fabric covers (4) or other moving webs, consisting of a metering unit with a pipe system (11) and an application unit (1),
   characterized in that
   a feeding system for conveying the active substance to the application unit (1) is arranged by means of the metering unit, and the application unit (1) includes a pad (12,60, 65,96) with an open-pore mesh structure for receiving and storing the active substance and for applying the active substance onto the moving surface in the form of a film in dependence on the degree of saturation and the contact pressure of the pad (12, 60, 65, 96), at least sections of the pipe system of the metering unit being integrated into the pad (12, 60,65,96).
2. The apparatus according to Claim 1, comprising a liquid active substance selected from a group containing water or mixed solvent systems, e.g., with aliphatic and/or aromatic, linear and/or cyclic, polar and/or non-polar solvent fractions, salts of monovalent or multivalent ions, acids and/or alkaline solutions, aqueous and oleiferous liquids, particularly saturated or unsaturated, open-chain or cyclic, normal or isomeric hydrocarbons, polymeric linear and/or cyclic alkyl siloxanes and alkyl aryl siloxanes and/or aryl siloxanes and/or their copolymers and/or cationic or quaternary and/or amphoteric silicone products and/or silicone derivatives, silicone oils, silicone greases, silicone tensides, silicone oil dispersions, silicone liquids, polydimethyl siloxanes, polymethyl phenyl siloxanes, oleiferous suspensions, oil emulsions, oil-in-water emulsions, water-in-oil emulsions, mineral oil, natural oils and fats, vegetable oil, animal oil such as, e.g., castor oil, coconut oil and/or tall oil and/or their derivatives, primary, secondary and tertiary or linear and/or branched, aliphatic and/or aromatic alcohols and/or ethers and/or esters derived thereof, betaines, lecithins, phospholipids, protein solubilisates and/or modified products thereof, wax emulsions, tensides, in particular, anionic, nonionic, amphoteric and/or cationic tensides, anionic, nonionic, amphoteric or cationic tenside-like and/or polymeric fluoric compounds, primary, secondary or tertiary alkyl amines and/or alkyl aryl amines, diamines and/or polyamines, alkyl and alkyl aryl amino oxides, imidazolinones and morpholines, quaternary ammonium compounds, if applicable, also ethoxylated, saturated and/or unsaturated fatty acids and/or their salts with monovalent and/or multivalent cations, esters, amines and/or amides of saturated and/or unsaturated fatty acids and/or fatty alcohols, alkyl and/or alkyl aryl phosphates, phosphonates, sulphates and sulfonates, alkyl ether phosphates and/or sulphates and/or alkyl aryl ether phosphates and/or sulphates, alkyl and/or alkyl aryl sorbitans and/or polyols and glycerides, alkyl and/or alkyl aryl polyglycol ethers and/or esters, wetting agents, antistatic agents, anti-friction agents, lubricants, emulsifiers, lipophilic and hydrophilic cleaning agents, lipophilic and hydrophilic solvents, alcohols, saturated fatty alcohols, unsaturated fatty alcohols, saturated fatty acids, unsaturated fatty acids, fatty-acid monoalkyl esters, fatty-acid amides, fatty-acid monoalkyl amides, monoesters or polyesters of saturated or unsaturated monovalent or multivalent carboxylic acids, wax alcohols, glycols, benzene, isopropanols, toluene, aliphatic compounds, glycerides, as well as anionic, non-ionic, amphoteric and/or cationic synthetic and/or natural polymers in dissolved and/or dispersed form, homo-polymerized and/or copolymerized polyamines, polyesters, polyacrylates and/or polyalkylene glycols and/or alkyl polyglycols, anticorrosive agents, as well as biocides, activators and/or catalysts, reactive precursors of release products that can be activated with UV-light and electron beams, and combinations thereof.
3. The apparatus according to one of the preceding claims, characterized in that the metering unit includes a pipe system (11) with at least one section that is porous to the liquid active substance and/or with transverse openings in the region of the application unit (1), preferably of the pad (12, 60, 65, 96).
4. The apparatus according to Claim 3, characterized in that the metering unit includes a feed device, by means of which the liquid active substance is conveyed to the application unit (1), particularly in a continuous fashion.
5. The apparatus according to one of Claims 3 or 4, wherein the pipe system (11) comprises at least two pipes (112, 113) for feeding and returning the liquid active substance.
6. The apparatus according to Claim 5, characterized in that the liquid active substance is circulated in a circuit and, in particular, is tempered and/or mixed in a reservoir.
7. The apparatus according to one of the preceding claims, characterized in that the pad (12, 60, 65, 96) in the application unit (1) is accommodated in a mounting (14, 15) and, in particular, at least sections of the pad (12, 60, 65, 96) are non-positively, frictionally, positively and/or integrally connected to the mounting.
8. The apparatus according to one of the preceding claims, characterized in that the apparatus is combined with at least one cleaning system (2), particularly a scraper system (22).
9. The apparatus according to Claim 8, characterized in that the application unit (1) and the cleaning system (2) are arranged on a common cross head (50, 51), particularly by means of adapter rails (6, 7).
10. The apparatus according to one of the preceding claims, characterized in that at least the application unit (1) includes at least one pressing system, particularly a load application hose (19) for pressing the application unit against the moving surface, and a lift-off system, particularly a lift-off spring (110, 111), for lifting the application unit off the moving surface.
11. The apparatus according to one of the preceding claims, characterized in that the application unit (1) is segmented over the width of the moving surface for differentiated application of the liquid active substance.
12. The apparatus according to one of the preceding claims, characterized in that the pad (12, 60, 65, 96) is manufactured of at least one material that is selected from a group containing threads, cords, strands, fibers, particularly woven fabrics, braided fabrics, layered fabrics, compressed fabrics or meshes thereof, sponges, felts, multicomponent systems, particularly fabric-covered flow paths, particularly hoses that are manufactured, for example, of PTFE, or an elastic core, e.g., of EPDM orViton and the like, and combinations thereof.
13. A method for applying a liquid active substance onto a moving surface by means of an apparatus according to one of Claims 1 to 12, comprising the steps of:

    - saturating the application unit (1), particularly the pad (12, 60, 65, 96), with the liquid active substance;

    - placing the application unit (1) against the moving surface in order to produce a film;

    - lifting off the application unit (1).
14. The method according to Claim 13, characterized in that the liquid active substance is continuously fed to the application unit (1) and, in particular, to the pad (12, 60, 65, 96).
15. Use of the apparatus according to one of Claims 1 to 12 for keeping moving surfaces of cylinders (3), rolls, fabric covers (4) or other moving webs free from deposits, accumulations or contaminations, particularly as part of a device for manufacturing paper, cardboard or paperboard or for manufacturing metal sheets or press boards.

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