DE2059336A1 - Device for expressing fluids from tissue articles - Google Patents

Description

¹ III! : ■■ '■:' ■ ■.! ■■ ■ ■

P. 1385

PATENT LAWYERS

Diving. HANS RUSCHKE

Dlpl.-Ing. HEiNZAGULAR

BERMN 33 AuButU-Vlktorla-Str ·! · Ts

Steiner Company Lausanne, S.A., Lausanne, Switzerland

Device for expressing liquids from tissue articles

The present invention relates to an apparatus for the large-scale treatment of soiled fabric articles and in particular a device for expressing excess Liquid from such tissue articles, in which these upwards between a freely rotating cylinder and a drive roller be passed through.

In industrial washing processes and systems one has pull-out Dzw. Applied expressing devices to after washing and / or spilling the fabric articles - the latter in order to remove the washing liquor from them - to press the liquid out of the articles. In some older systems, such as that of US Pat. No. 3,439,3,5, the liquid extractor required large and heavy drums, wringers, and power packs. Typischerwe TSSE were in industrial Ausziehanlagen both the drums al «<:. H: n Wringrollcn angetrieoen and therefore require at ■ • π.- ·"'- ■ · ■ ■■'■■■■■;k'tiWaves',i> l "-i; e increase because" AnL ^ aniyowLehn lead by I

to sagging of the drums and rolls and to sheer Liquor deprivation.

It was also common with the extraction systems used up to now, insert the wet fabric article from above between the drum and the wringing roller. This collects between the drum and roll of liquid, which in turn requires that the roll exert a very high force on the drum to keep the drum wet Article can be expressed sufficiently.

* The liquid squeezing device according to the present invention is designed to overcome these problems and generally includes a freely rotatable cylinder that rotates about a first, substantially horizontal axis is rotatably arranged, as well as a drive roller, which about a second substantially horizontal axis is rotatably arranged, which second axis is aligned substantially horizontally with the first axis

hi and runs parallel to it, and a first feed

direction, which applies the fabric article on the side facing away from the roll on the cylinder, down around the cylinder and then between the cylinder and the roll up through ^ and a motorized device that presses the cylinder and the roll against each other to to press the intervening f fabric article lying and thus push the liquid out of it, whereby the liquid from the article down between the part of the article which rests on the cylinder and the adjacent exposed face of the roller is expressed.

In a preferred form, the pull-out system according to the present invention provides for the first time a pull-out device for the simultaneous treatment of ten adjacent cloth webs without the pull-out elements having to be supported at intermediate points. In this device, the cloth is wiped out for the first time with reduced pressure /, wiping the drum and the associated wringing roller, in order to create a n U'i in the ^ öVolUui Hetfi H! der LaxkunK .''- ■■ - ".u ^; " ■ 1 l.t'hon.

BATH ORIGINAL

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The present invention therefore further provides an apparatus for expressing liquid from a plurality of Rows of juxtaposed wet tissue articles in front of this device has a number of freely rotatable cylinders on the number of the plurality of rows to be processed Corresponds to tissue article and which can be rotated axially next to one another about a first, essentially horizontal common axis are arranged, a first plurality of drive rollers, the number of which corresponds to a first group of alternating cylinders and which are rotatably arranged about a second, substantially horizontal common axis which is on one side of the cylinders lies and is aligned with the first common axis essentially horizontally and runs essentially parallel, a second plurality of drive rollers, the number of which corresponds to a second group of alternating cylinders and which are around a third, essentially horizontal, common axis rotatable which lies on the other side of the cylinder and with the first and second straight axes substantially aligned horizontally and parallel, a first plurality of feed devices, the number of which is equal to the first Group of cylinders and corresponds to the corresponding row ι of fabric articles on the cylinders of the first group of cylinders on the side facing away from the assigned rollers, down around them and up between the cylinders of the first group of cylinders and the associated rollers pass through a second plurality of first feed devices, whose number is equal to that of the second group of cylinders, and which the corresponding row of fabric articles on the Cylinders of the second group of cylinders on their side facing away from the assigned roles, down around them and pass upwards between the cylinders of the second group of cylinders and the associated rollers, a first motor device, which presses the first plurality of drive rollers against the first group of cylinders around the between them to press arranged tissue articles and thus to move liquid out of them, a second motor device, the the second plurality of drive rollers against the second group

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presses from cylinders in order to press the tissue articles arranged in between and thereby force liquid out of them, whereby the liquid from the articles between the parts resting on the associated cylinders Article and the adjacent exposed sides of the associated role is expressed downwards.

The attached drawings show the following:

Fig. 1 is a perspective view of part of the extractor and shows the axial arrangement of the drums and the mutual arrangement of the drums and the driven rollers;

Fig. 2 is a plan view of a series of cylinder / roller units; which are arranged as shown in Figure 1 and can accommodate ten webs of fabric arranged side by side;

Flg. 3 is a section through the device according to FIG the line 3-3 and shows one of the alternating groups of the drums, the associated driven rollers and the mechanisms for feeding the webs of fabric;

FIG. 4 is a section through the device according to FIG. 2 along the line 4-4 and shows one of the alternating groups of the drums, the associated driven rollers and the mechanisms for feeding the webs of fabric;

Fig. 5 is a section through a freely rotatable drum of the Fig. 3 along section line 5-5;

Fig. 6 is a section through the roller and bearing of Fig. 6 taken along line 6-6 and showing the mutual arrangement of the rollers and the bearings between them.

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The Pig. 1, 3 and 4 show the liquid kefcs extractor 925, as it expresses liquid from Flachwäsohe 6750, which from the (not shown) flushing device of an industrial washing plant exits. As already stated above, the extractor 925 also used to make the liquid to remove from the flat laundry emerging from the washing device of such a system. It should be repeated here again that the flaoh wash 6750 preferably consists of a. Variety of continuous towel webs or webs of another permeable Tuohmaterlals, which are next to each other are arranged and represent the Flächwäsahe 675.

The pull-out device 925 has a plurality of support drum 930 in the form of axially juxtaposed cylinders, which rotate freely about a fixed shaft 931, which are connected at point 932 in a suitable manner to two edgewise spaced end frames 933 and 93 ^ ·. These end frames support the drums 930j as discussed below. The cylindrical support drums 930 are constructed and arranged in such a way that they can rotate freely around the fixed horizontal shaft 931 and therefore have a comfortable axis, the drums 930 having an inner tube 937 and an outer tube 938, the inner tube 937 and the outer tube 938 through two circular and spaced end plates 939 are connected, the circular end plates 939 have a large central opening, these openings being aligned with each other, and the bankruptcies 939 % n in a suitable manner - such as by welding at point 941 ή on the inner and outer pipes 937 and 938 are attached. The inner tube 937 ^is stepped on the inside to create a shoulder 94a which serves a purpose discussed below.

In each drum 930 two bearing arrangements 9 ^ 5 are arranged at the outer ends, as shown in FIG. These storage arrangements have bearing shoes that the inner and outer running length 946 or 947 form and between them a plurality of Hold the bearing balls 948 in place with the inner races 94 # 6

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forming bearing shoes are fastened in a suitable manner to the fixed shaft 931, while the bearing shoes forming the outer race rings 947 are connected in a suitable manner to the inner tube and rest on one side on the shoulders 942. It is thus seen that each ^e £ tütztrommeln is arranged freely rotatable about the fixed shaft 930 AD.

A spacer sleeve 950 surrounds both ends of the drums 930 in the form of a tube, the shaft 931; each sleeve 950 rests on the associated bearing shoe forming the inner race 946, and each sleeve 950 is suitably connected to shaft 931 to rotate with it, the spacer sleeve 950 defines the required distance to it along the shaft 931 in order for the drum 930 to move in the direction of the Longitudinal axis of the shaft. 931 to prevent.

Although the puller 925 liquid from tissue articles in the form of the fluffy laundry 675c, they can still carry a certain amount of washing liquor with them, which prevents it must come into contact with the lubrication system for the ball bearing 948 ζψ in order to wash out the lubricant from the bearings and to prevent them from being burned out. To this end, at each end of the drum 930 is an annular inner one Oil seal 953 in a suitable manner on the inner tube 937 urü the den Outer race 947 forming bearing shoe attached; everyone who inner oil seals 953 has a lip 954 which rests against the associated spacer sleeve 950 and prevents that Sohmierstoff flows off to the outside. In the same way are two annular outer oil seals 956 are provided on each End of the drums 930 are arranged and attached to the inner oil seals 953, the outer oil seals having a lip 957 which is attached to the associated spacer sleeve 950 rests, with the lips 957 protruding outwardly away from the drum 930, so that no rinsing liquid enters the space between the bearing shoes that form the races 946 and 947 penetrate can. As can be seen from the explanations above, a

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Large number of spaced-apart mare drums 930 in the form of Cylinders provided, which are arranged freely rotatable about this on a common horizontal axis, the number of the drums 930 corresponds to the number of fabric webs that represent the flat linen 675c.

Also provided '' is a plurality of wring rollers 96Ο, the number of which corresponds to that of the drums 930. As in Fig. 1 shown, the wringing rollers 96Ο on two spaced apart and driven shafts 961 arranged, these driven Shafts 96I run parallel to the fixed shaft 931 and the axes of rotation of the driven shafts 96I in the same horizontal plane like the axis of the shaft 931. The shafts 96I are rotatably mounted in the end plates 933 and extend through openings (not shown) of face plate 934 to accommodate a drive mechanism (not shown) to be connected. The wringing rollers 96Ο are arranged in two rows, each of which consists of a number of rollers, which are aligned with the alternate drums 930. Each of the rows of rollers 96Ο alternately arranges the drums 930 a corresponding roll 96Ο to, and there two rows of rolls; 96O are available, each drum 930 is assigned a roller 96Ο, for adjacent drums 930, the associated rollers 960 are on opposite sides, such as it Fig. 2 shows.

As shown in FIG. 6, each roller 96Ο has a rubber cover in the form of a tube vulcanized onto the spacer sleeve 965 on, the Abs ^ band sleeve 965 in a suitable manner with the driven shaft 96I is connected to rotate with it, and the spacer sleeve 965 has a greater longitudinal expansion than the Has rubber blanket 963. Located between each two rollers 960 a bearing arrangement 970, the length of which is approximately equal to that of the wring rollers 960 and thus the drums 930. Any bearing arrangement consists of a sleeve 971 that is tubular and stepped on the inside at both ends to create two shoulders 972. At both ends of the sleeve 971 is an inner bearing shoe

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appropriately attached to shaft 971 - as well as at each end of the sleeve 971 an outer bearing shoe 977 with the inner bearing shoe 976 appropriately aligned therewith Sleeve attached 1st; the outer shoe 977 rests against the shoulder 972. Between the inner shoe 976 and the outer shoe is a plurality of bearing needles 978, as a result of which the shaft 961 can rotate in the bearing assembly 970, wherein the bearing assembly 970 can remain stationary as the shafts 960 rotate for a purpose discussed below.

The problems of lubricating the ball bearings 9 ^ 8 are the same This also applies to the needle bearing 978, and therefore an inner oil seal 983 is provided at both ends of the bearing sleeve 971, which is generally annular and has a lip 984 on the inner edge that extends inwardly onto needle bearings 978 and the spacer sleeve 965 touches to prevent an escape from Prevent lubricant from entering the space between the inner oil seals 983. There are two on the inner oil seals 983 outer oil seals 986, which are annular in shape and have a lip 987 on the inner edges. The Lip 987 of the outer oil seals 986 also contacts the sleeve 965, but the lips 987 of the outer oil seals 986 are down directed outwards in order to allow the washing liquor or rinsing liquid to penetrate into the space between the inner seals 983 avoid.

The wringing rollers 96O are supported by a plurality of pressure yokes

990 pressed against the drum 930, a pressure yoke being provided for each individual wringing roller 96O. As in Pig. 1, the pressure yokes 990 are identical to one another and each have a pair of horizontal and spaced-apart pairs Leg 991 *. on, which are connected by a bracket 992 which extends parallel to the axis of the shaft 96I, whereas legs 991 are generally perpendicular to the axis of shaft 96I. Furthermore, the legs

991 has a curved surface 993 at the distal end thereof; these

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Surfaces 993 have the same radius of curvature as the surface of the bearing assemblies 970 that they abut. As the orders 970 does not turn with the rotation of the shafts 96I, arises between the arrays 970 and the curved surfaces 993 no friction when the rollers 96O are pressurized as described below.

The pressure yokes 990 are moved by a motor by means of a hydraulic system that has a pressure distributor 995 in the form of a arranged parallel to the longitudinal axis of the shafts 96I and the shaft 931 Having pipe and a plurality of supply pipes 996, the number of the pressure distributor 995 going out ZuMtungsrohre 996 corresponds to the number of pressure yokes 990. Each supply pipe 996 establishes a connection between the pressure distributor 995 and a hydraulic cylinder 997 * the piston 998 of which is attached to the bracket 992 of the pressure yoke 990. The hydraulic cylinders are operated in the usual way operated to the pressure yokes 990 on the freely rotating drums 930 to move. So as can be seen, on each Row of alternating drums 930 a corresponding number of wring rollers 960 pressed from one side, the number of Andrückjoche 990 is the same on both sides of the shaft 931. The total net pressure on the shaft is therefore zero. It a dislocation effect is achieved, according to which an e & te Drum 930 through a roller 96O from the right, the next drum through a roller 96O from the left, a third drum 930 through a role 9βθ is in turn acted upon from the right, etc., what reduces the strength requirements of shafts 96I and 93I, since each wave 96I only needs to be strong enough to be a drive torque for half the usual number of rollers 96Ο can deliver. The shaft 96I can therefore become considerably smaller. Since the shaft 931 does not have to be so strong that it applies a torque to the large number of drums carried on it 930, but it is sufficient if it can withstand the weight of the drums 930, the shaft 93I can also provide a substantial have a smaller diameter than is usually found in systems of this type.

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In general, the flat linen 675c is placed on top of the associated Roller 96O is applied to the side of the drum 930 facing away from this, it goes without saying that each individual towel web is applied to a separate drum 930. If so ten towel webs are arranged next to each other, they run on ten different drums 930. The application of the laundry 675c on the drum while it is rotating, causes that the laundry is guided downwards around the drum. As shown in Figs. 3 and 4, there are a plurality of cushion rolls 1005 provided, which run on waves IOO6. The rollers 1005 k are made of a soft, resilient material and rotate at a speed equal to the speed of rotation of shafts 96I and ensure close contact the wet flat laundry 675o with the associated drum 930. When applying the wet flat laundry 675c to the side of the assigned drum 930 it adheres - essentially as a result a capillary effect - on its smooth surface, wraps around the drum 930 and runs up between the Drum 930 and its associated wringer roller 96O up to one Pinch gap IOI8. The fact that the pressure yoke 990 is assigned Presses the wringing roller 96Ο against the drum 930, the Liquid expressed from the wet laundry 675c in between, to reach wash 675d from which the liquid) has been squeezed. There is also a large number of doctor blades IOO8 provided, each over the associated drums and rollers 96Ο are arranged and run parallel to the longitudinal axis of the drum 930. Each doctor blade IOO8 has a pressurized Edge 1009, which lies opposite the associated drum 930 and is close enough to it to remove the flat laundry 675d from lift off the surface 930 when it goes up between the associated drum 930 and roller 96Ο through the nip 1018 is running. As can be seen, the wet flat laundry 675c runs upwards at the narrowest point in the gap IOI8 between them Drum 930 and roller 96Ο through; the excess liquid 1019 is squeezed out of it and falls downward from the Wash away 675c. The flat laundry 675d is then removed from the drum

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950 lifted by the doctor blade 1008 and from her onto the surface transferred to the associated roll 960, around which it revolves to be fed to a dryer 1025.

As can be seen, a pull-out system 925 has been created, having two driven shafts 961 which. each carry only half the number of driven wringing rollers 96O and therefore may be smaller for the purpose of transmitting torque to the rollers 96O. The waves 96I, as shown in FIG. 1, oppose each other in FIG Rotate directions with the right shaft 96I rotating clockwise while the left shaft 96I rotating in the Rotating counterclockwise, alternately spaced rollers 960 and bearings 970 carry, with rollers 960 each bearing Shaft 961 are assigned to alternate drums 930 and each Drum 930 associated with a roller 96O of the right shaft 96I rotates counterclockwise while each drum 930, which is assigned to a roller 96O of the left shaft 901, itself rotates clockwise.

Since the wet flat laundry 675c up between the associated Drum 930 and roller 960 is guided, no "puddle" forms between drum and roller over gap IOI8, as is the case it has already been mentioned above in connection with the prior art, in which the wet article is usually from above between the two rollers is inserted and the aforementioned puddle forms over the gap, with the liquid flowing through the gap falls down. By eliminating the need for significant wringing pressures avoids, the applicant has also avoided the need for large and strong system parts that are required would be to apply these high pressures. This means that the strength of the shafts 96I and also of the shaft 931 is kept smaller than would otherwise be necessary.

As can be seen in particular from FIG. 3, a first plurality of rollers 960 is provided, the number of which is a first group alternating Drums 930 corresponds and which are rotatably arranged about a common shaft 96I, while Fig. 4 shows the second

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Shows a plurality of lobes 960, the number of which corresponds to a second group of alternating cylinders 930 and which corresponds to a third horizontal shaft 961 are rotatably arranged, the shafts 96I and the shaft 931 being substantially horizontal with one another are aligned and arranged parallel to each other. As seen for the clockwise spinning drums, the flat laundry 675c according to Fig. 3 is on this from the right 4, while the flat laundry 675c is sprayed from the left onto the drums 930 rotating in the counterclockwise direction will; In any case, the flat laundry 675c is placed on the drum 930 on the side facing away from the associated roller 96O upset. Since the pressure yokes 990 are arranged in the same number and reciprocally with respect to the shaft 931, the same the pressure on shaft 931 is exerted, and shaft 931 only needs to be strong enough to withstand the weight of it rotatable drums 930 supported by it. Since the drums 930 are not motor-driven, there is a little difference in the surface speed of the rollers 96O on the one hand, which are motor-driven, and the drums 930, which is essentially through the thickness of the flat linen 675 is caused. It is therefore necessary to use the shafts 96I to be driven with a slightly higher surface speed than for the upstream and downstream treatment units is required, namely the transport device 77od and the transport device assigned to the dryer 1025. A (not The trough shown in the figure is provided under the drums 93 ° in order to collect the lye or liquid 1019 that has been squeezed out, and they are the To supply sewerage or a heat exchange system or to supply the extracted water 1019 to other parts of the system to be able to use.

In contrast to the typical prior art industrial exhaust systems discussed above, the drums 930 are held freely rotatable. Therefore, the shaft 931 supporting ^ frommel 930 need not be unduly strong, and the problem of increased weight does not arise. In an industrial plant that treats ten lengths of cloth at the same time, for example, the

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Waves 931 and 96I are so long that with heavy waves already deflection occurs. The towel strips in the middle of the system will then no longer be squeezed out correctly.

The following practical example proves the improved effect of the present invention. A towel that is 30.48 cm wide and 68.58 cm long has a dry weight of approx. 41 g. When fully saturated, the wet weight is approx. 155 g. When expressing according to the conventional method, in which the towel web is fed down between the drums and driven wringing rollers, the same towel web weighs 99 g after the expressing. However, if it is expressed according to the method and in the appendix as described above, the same length of towel weighs only 79.5 g. It is therefore clear that with the method and the device according to the present invention, a 15-20% better expression effect is possible.

- patent claims -

itlin / 1773

Claims (1)

Claims t (ly device for squeezing liquid out of a wet tissue article, with a rotatable drum, a rotatably mounted roller that rests under pressure on the drum surface, and with means that apply the articles to the drum surface so that they are caught by the roller there , characterized in that the drum is a freely rotatable cylinder which can rotate around a first, essentially horizontal axis, and the roller consists of a drive roller which extends around a second, essentially horizontal, essentially parallel to the first axis and is rotatably disposed substantially with said horizontally aligned axis, and further characterized by first feeding means for feeding the fabric article up on the opposite side of the roll onto the cylinder, down around it and then up between the cylinder and the roll to cause the liquid to escape from the article between the one on the Z ylinder lying part of the article and the adjacent exposed side of the roll down abf! Reading T. 2. Vorrlohtung according to claim 1, characterized in that dtr freely rotatable cylinder has a GA ^ tte outer surface. 3, Vorrlohtung according to claim 1 or 2, daduroh characterized, that the drive roller is a resiliently flexible AuesenflXohe Has. 10IS24 / U73 - 15 - p. 1385 4. Apparatus according to claim 1, 2 or 3, characterized in that that the freely rotatable cylinder and the drive roller are substantially the same length. 5. The device according to claim 4, characterized in that the freely rotatable cylinder and the drive roller at least so are long as the tissue article is wide. 6. Device according to one of claims 1-5 # characterized in that that a motorized device is provided and designed so that it presses the roller against the cylinder while the cylinder remains stationary. 7. The device according to claim 6, characterized in that the motor device has a hydraulically operated yoke, with which the roller is pressed against the cylinder. 8. Device according to one of claims 1-7 * characterized by the freely rotatable cylinder adjacent means which Contact between the tissue article applied to the cylinder by the first feeding device and the surface of the, maintain rotatable cylinder. 9. Device according to one of claims 1-8, characterized by a second feed device to the tissue articles of to transfer the side of the cylinder facing away from the first feed device onto the roll. 10. Device according to one of claims 1-9, characterized by one above the cylinder on which the first feed device facing away from the blade, which removes the tissue articles from which liquid is squeezed out from the surface of the cylinder lifts off and guides the lifted item onto the roll. 11 «Device according to one of claims 1-10 for expressing of liquid from several rows of wet tissue, which 109824/1773 - 16 - p. 1385 arranged side by side bind, characterized «that the device has a plurality of freely rotatable cylinders, the number of which is equal to that of the rows of tissue articles and which are arranged aohsially next to one another and rotatable about a first, essentially horizontal common axis, a first A multiplicity of drive rollers, the number of which corresponds to a first group of alternating cylinders and which are surrounded by a second, im essentially horizontal common axis are rotatably arranged, which axis is arranged on one side of the cylinder and is aligned essentially horizontally with the first common and runs essentially parallel to this, a second A plurality of drive rollers, the number of which corresponds to a second group of alternating cylinders and a third, im essential horizontal common axis are rotatably arranged, which axis is located on the other side of the cylinder and is substantially horizontal with the first and second common Axis aligned 1st and runs parallel to this, a first plurality of first feed devices, the number of which is the same that of the first group of cylinders and that of the corresponding rows of tissue items on the cylinders of the first group of Applies cylinder on the side facing away from the assigned roles and they naoh down around them and up between them the cylinders of the first group of cylinders and the associated rollers füfyt, a second plurality of first feed devices, the number of which is equal to the second group of cylinders and the corresponding rows of the tissues on the cylinders of the Apply the second group of cylinders on the side facing away from the associated roles, down around them and between the cylinders of the second group of cylinders and the assigned Roll up hinduoh, a motorized device, which the first plurality of drive rollers against the first group of cylinders presses in order to press the tissue articles arranged between them, and a second motorized device «die the second plurality of drive rollers presses against the second group of cylinders in order to press the fabric articles arranged between them * 109824/1773 j - 17 - S 1385 12. The device according to claim 11, characterized in that the first plurality of driving rollers rotates clockwise and the second plurality of driving rollers rotates Gegenuhrzelger- S meaningful. 13. The apparatus of claim 11 or 12, characterized by a first plurality of second feed devices, the number of which is the same as that of the first plurality of drive rollers and that of the associated fabric articles from the first group of cylinders transfer to the first plurality of drive rollers, and by a second plurality of second supply devices, the nature of which is the same as that of the second plurality of drive rollers, and *> which the associated tissue article from the second group of ί Cylinders on the second plurality of drive rollers. j 14. The device according to claim 11, 12 or I3, characterized by eii e first plurality vo / blades, the number of which is equal to the first plurality of drive rollers and the associated ones \ Separate tissue articles from the first group of cylinders and r the assigned fabric articles on the assigned drive rollers convict, and through a second multitude of blades, the number of which is equal to that of the second plurality of drive rollers and that of the associated fabric articles from the second group separate from cylinders and place the severed tissue articles on the [assigned drive rollers üoerfuhren. Cl./iir. 109824/1773