DE1197436B - Vortex separator - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

BOId

German KL: 12 d- 1/01

Number: 1197 436

File number: V17231IV a / 12 d

Filing date: September 11, 1959

Opening day: July 29, 1965

For the elimination of impurities from suspensions, especially from fiber suspensions For paper and cardboard production, vortex separators are generally used. As is known, these preferably consist of a vertical-axis, cylindrical container, the so-called vortex tube, which tapers conically at least in its lower part. The suspension is introduced into the vortex tube under pressure, either tangentially and / or on a slinger. With the excretion of the impurities on the wall of the vortex tube the suspension moves helically downwards and after gradual reversal of the Direction of flow in the conical lower part of the vortex tube within the outer helical flow back to the top, where the cleaned suspension passes through an immersed in the vortex tube Tube is pulled off. The separated impurities slide on the wall of the vortex tube down and get into a dirt container located below the vortex tube.

In such a device is known from which to the lower end of the vortex tube by means a cylindrical connecting pipe having a gate valve and a constriction wide dirt container through a flue pipe attached near its flat ceiling to continuously remove a small amount of sediment in order to maintain a constant one downward liquid flow in the lower part of the vortex tube and in the adjoining one produce cylindrical connecting pipe, which the excreted dirt particles in the Should transport dirt container. It is also known to have one with a in the ceiling of the dirt container To arrange a shut-off valve provided water pipe. The water pipe is when emptying the dirt container open to with the gate valve closed in the connecting line between the Vortex tube and the dirt container to wash out the dirt adhering to the container walls.

In order to prevent clogging of the lower end of the vortex tube and the greatest possible excretion To achieve the impurities from the suspension with the lowest possible fiber loss, it is known to suspend to supply flushing water below the lowest point of reversal of the flow in the vortex tube, namely with a flow velocity that is slightly greater than the rate of descent of the fibers, but less than Vortex separator

Applicant:

J. M. Voith G. m. B. H., Heidenheim / Brenz

Named as inventor:

Dr.-Ing. Giovanni Ferro-Luzzi, Rome;

Klaus Kurth, Heidenheim / Brenz

is the rate of descent of most of the discharged dirt particles. This creates a breakup of the fibers from the dirt particles and in particular also a detachment of most of the after Sinking dirt particles at the bottom, adhering fibers from the dirt particles reached, as the sinking speed the dirt particles in turn is greater than the flow rate of the rinse water. the Large and medium-sized dirt particles therefore fall easily with the known vortex separators against the direction of flow of the rinsing water into the dirt container; the small pieces of dirt, on the other hand, their rate of descent is only slightly less than or almost equal to the flow rate of the flushing water collect below the lowest point of reversal of the flow in the vortex tube and can only be discharged into the dirt container with difficulty. That's why very often in the known vortex separators undesirably the fine dirt particles with the Rinse water in the cleaned suspension, especially if there are pressure fluctuations in the Substance feed and / or occur in the rinse water feed line. Due to such pressure fluctuations it can also happen that the fiber suspension to be cleaned after in an undesirable manner flows down into the dirt container. In order to achieve good excretion, the amount of rinse water is kept as low as possible; therefore, there are pressure fluctuations in the flushing water supply line particularly disadvantageous noticeable.

Another disadvantageous reduction in the cleaning effect is with the known vortex separators due to the type of emptying of the dirt container necessary from time to time. These can be used either with the vortex separator closed from the inlet or during operation of the

509 628/263

3 4

same done. The dirt container is in both of the vortex tube and is therefore in this space Cases emptied by hand by opening the vortex tube only during the short duration of the flushing period its lower end by means of a slide of water supply line below the separation zone ansamdem Dirt container closed, then the pre-meal, up to below the confluence of the rinsing water pivotable or hinged trained 5 lower supply line. Because when the sink floor comes to a standstill of the dirt container opened, the accumulated water flow comes the sinking speed of this Melt dirt removed from the container, the bottom fine dirt particles to full advantage, with the closed again, then the container from a pressing, containing numerous debris Water pipe filled with water and finally the separation zone this sinking movement of the fine Slide is opened again. During this ent- io dirt particles supported. Furthermore, when emptying of the dirt container is the vortex tube in use of the method according to the invention In both cases, the amount of flushing water removed from the flushing water supply line is selected to be relatively large, so closed, so that during this time the cleaning process that pressure and thus volume fluctuations the suspension is interrupted or a clogging in the flushing water supply line is no longer adversely reduced Can make the elimination of dirt in purchase 15 noticeable.

must be taken. Particularly in the case of strong injuries. When using the method according to

dirty suspensions where an in invention there are different ways to Repeated emptying at short intervals to throw the dirt particles out of the dirt space Dirt container is required, make yourself, sen. There is an advantageous possibility with that in papermaking in particular, the common 20 processes according to the invention are that the Interruptions in operation or the repeated one containing the coarse and fine particles reduced excretion of the impurities as dirt shared by the only within the Disturbance of the continuous work process and closing time of the flushing water supply line opened in particular as unevenness in the sheet-holding dirt space. This is because of this education noticeable. 25 achieved that the flushing water supply

To remedy these disadvantages of the known line and open dirt chamber outlet after According to the invention, vortex separator is a down in the dirty space to under the rinse water process proposed, according to the fine dirt that has sunk into the feed line, its sinking flushing water feed line in repetitive, voluntary movement in the dirty room, even during the recurrent exercise adjustable time intervals so briefly following opening time of the flushing water supply line, It is concluded that the separating zone, which is thereby sinking, during which the dirt space outlet is closed of the fibers from the dirt particles is the rinse, continues and thus together with the water supply is not achieved, with the coarse and medium-sized dirt particles on the bottom Dirt chamber inlet kept open and that of the dirt chamber accumulates. From there, all Dirt chamber outlet at least within the closing 35 of this dirt during the next closing period of the the duration of the flushing water supply line is kept open. Rinsing water supply line through the opened dirt

This invention achieves that while exhaust is removed. This process is repeated every time the flushing water supply is switched off, for example a space 40 minutes long with a discharge of the dirt particles collected into the dirt space ^{below the lowest reversal point of operation with an open flushing water supply of 3 1 A Mi vortex flow in the vortex tube} Parts from the dirty space during which about 5 seconds below the flushing water supply line are discharged, during the closing time of the flushing water without interrupting the operation of the vortex separator.

needs to be broke. Also at times Another option that is used when applying

reduced excretion of the dirt parts takes 45 of the method according to the invention from the not to be accepted here, since the vortex separator separated dirt particles in Vortex tube also during the emptying of the advantageous way continuously and without sub-dirt space is related to this. The vortex separator ceases to operate During the period when the flushing water supply line is closed, discharging the dirty space consists of only decreases the separation zone of the fibers from the 50 that the continuously open dirt chamber outlet during Dirt parts, in which the dirt parts to the opening duration of the flushing water supply to a Adhering fibers are detached from the dirt particles with a line provided with a sedimentation box, temporarily down. The dirt closes through which predominantly the majority Thus, during the closing period of the ben dirt particles fall from the dirt space-flushing water supply line downwards faster than wah- 55 leads, whereby that by discontinuing the coarse end of the rinsing process with the rinsing water open to dirt particles in the sedimentation box management. The closing time of the flushing water supply line in the circuit through a line to the flushing water compared to the sinking time of the separation zone line is returned, and that also this of the fibers from the dirt particles chosen so short, dirt space outlet during the closing period of the that the flushing water supply line is already open again So the flushing water supply line is interrupted in the circuit, before this separation zone the flushing water supply line is connected to a separate discharge line has reached. This means that the rinsing water can still be used, through which predominantly the fine dirt particles are removed from the fibers present in this separation zone. In this procedure separate from the dirt. This shift can be relatively large amounts of flushing water the separation zone downwards has the great advantage that 65 can be used because the rinsing water is in the circle the fine dirt particles whose sinking speed is controlled. The during the rinsing process the same or less than the downward falling, predominantly coarse dirt velocity parts of the rinsing water in the lowest part are immediately removed from the dirty space

5 6

discharged. The near the confluence of the flushing invention particularly suitable, but also not sewer located, predominantly fine depending on it advantageously to be used dirt-dirt parts arrive only after the room has been switched off, there are several possible flushing water supply lines according to the invention in the lower part of the handle.

5 According to the invention, in a dirty room, Separated discharge line discharged. Only after the one upper dirt space part and one on this The flushing out of the fine dirt particles becomes the lower with a sudden expansion water supply line opened again and at the same time the dirt space part has a larger cross-section, the Dirt chamber outlet back into the rinsing water circuit - upper dirt chamber part constant or after running on. By such a reversal 10 below steadily decreasing flow crossover Dirt chamber outlet is achieved that the cut own and the automatically controlled rinsing fines Dirt parts, which only with difficulty in the water supply line to the lower part of the dirt space Sedimentation box excreted from the rinse water has a larger cross-section immediately below the can be kept away from the flushing water circuit sudden expansion. A and removed separately. There are also 15 such cylindrical or steady downwards no fiber losses, since the flow cross-section decreases in the dirt space if fibers are always reached back with the rinse water, the upper part of the dirt chamber brakes the rotation of the brought to the vortex tube and there the accepted material to- suspension, if this when the sinking of the be guided. Separation zone of the fibers from the dirt particles in

Another possibility for continuous _ao enters the dirt chamber top. The sudden discharge of medium-coarse and fine dirt expansion of the dirt space in the vicinity of the parts from the dirt space consists in further entry of the flushing water supply line, that the formation of the invention is that through a flushing water over the circumference of the dirt known per se, constantly open, Distributed in sufficient container top. Furthermore, this widening distance from the floor of the dirty space has the advantage that dirt particles which have got into the orderly dirt space outlet during the opening and expansion will certainly no longer be carried upwards by the duration of the flushing water supply line and during the closing period of the flushing.

water supply fine and finest dirt particles With the cylindrical upper part of the dirt chamber, the

can be drawn off while the coarse dirt particles collected at the bottom of the dirt space are large. It can therefore happen that fine pieces of dirt and occasionally, for example by opening the base, which are located near the outlet opening of the dens, are removed. With a vortex tube located in such a way, the medium-sized vortex tube will be pushed back by the flushing water flow into the vortex separator operated. This nachben dirt particles through the flushing water supply line 35 part of the cylindrical upper part of the dirty space is discharged, while its design as a container with fine and extremely fine dirt particles prevents the flushing water supply line from closing through liquid cut during the continuously decreasing flow cross-section. Due to the speed from the dirt space in this training, the resulting reduction in the rinsing water _{speed due to the 40} speed dropping out of the vortex tube on the way between the exit from the separation zone of the fibers from the dirt parts from the dirt space upper part and the entry into which the dirt space is displaced. Shortly before this vortex tube an additional layering of the separation zone reaches the rinsing water supply line, fine dirt particles are opened, with the finest dirt these reopening, so that fresh rinsing water still flows far enough from the lowest, the fibers in the separation zone 45 reversal point of the flow dissolves in the vortex tube away from the adhering dirt particles and collects back. This ensures that it also brings to the vortex tube. finest dirt particles no longer get into the vortex tube

To carry out the backwash according to the invention.

The proposed method is a vortex separator. According to a further concept of the invention

uses, the one with a flue pipe for the 50 is only cleaned with a vortex separator Suspended (accepts) provided, closed flushing water supply line, opened dirt vortex pipe and has a dirt space, the space outlet of which is the outlet opening of the dirt space upper part of the dirty space at the bottom of the outlet opening is assigned a shut-off device from which the of the vortex pipe with the same diameter as the shut-off device of the flushing water supply line this is connected and in which at least 55 pulse generators are controlled, the opening one Lower dirty space position of one shut-off element of the closed position, having outlet part of a flushing water supply line opens. This we- is assigned to the other.

Belabscheider is characterized according to the invention in a vortex separator, which with constantly

shows that with a constantly open connection between the open dirt chamber outlet is provided and at see vortex tube and dirt space of the rinse water 60 to which the rinse water is circulated supply line an automatically working pulse generator - according to a further idea of the invention - is assigned, e.g. a timer, which is placed in below the dirt space outlet The box is arranged in an arbitrarily adjustable time sequence, to which a pressure-changing opening and closing of the shut-off increasing pump leads to the flushing water supply line causes the flushing water supply line. 65 line is connected; furthermore there is the

The formation of the dirt space comes in the dirt space outlet from which the shut-off element In the context of this invention, an essential meaning of the flushing water supply line controlling pulse generator gotung to. For the design of a for the purposes of the controlled reversing organ assigned, which the

7 8

Dirt chamber outlet flows through alternately one after the other to the settling vortex separator. Under

box and - when the flushing water is closed - the vortex separator is then a dirt collector

management - connects to a separate discharge line. arranged container from which the dirt,

Such a design of the vortex separator, if still necessary, a fiber recovery

According to the invention it is achieved that the fine system is fed.

Dirt particles through the reversing device when closed- In the drawing are schematic execution

Sener rinsing water allocation shown by means of a particular example of the invention.

Line are discharged so that they are from the flushing Fig. 1 shows a vortex separator, its

Be kept away from the water cycle. Dirt area outlet only when the rinsing

In the context of the invention, an outlet water line is also open,

formation of the dirt space can be used, in the case of the in F i g. 2 an embodiment in which the rinse water

In a manner known per se, a constantly open, circulated in during the flushing process

sufficient distance from the bottom of the dirt-will and

Raumes arranged dirt space outlet in the upper F i g. 3 an embodiment in which the fine and area of the dirt space part of the larger cross-section 15 medium dirt is constantly arranged, the coarse dirt, on the other hand, is arranged in a section and is only removed from time to time in its lower area,
vorzupweise in its bottom, another outlet. The vortex separator according to FIG. 1 has a vortex tube 1 with an arbitrarily operated shutter, on which the fiber to be cleaned is provided. This closure can for example flood through the inlet 2 tangentially designed as a flap or it can lead to the bottom or ao and in which the cleaned flood can be opened a side wall of the container. through the immersion tube 3 and the nozzle 4

With these types of construction the vortex separator depends on the discharge. The lowest reversal point of the flow size of the outlet opening of the dirt space mung of the cleaned fiber suspension in the type of substance to be cleaned, i.e. in the vortex tube 1 is located approximately at point 5. The particular of the average degree of its 25 dirt particles fall further down in the contamination and the size of the dirt space 6 to be removed, the outlet opening 47 of which can be closed off by means of dirt particles and by the method of a slide 7 used. At the dirt removal. For example, the slide 7 is followed by an outlet connection 10 vortex separators with a timer which directs the dirt out of the dirt space 6 in a controlled dirt outlet with a diameter of 30 to a collecting container 11.
Dirt outlet opening of about 12 to 15 mm. The dirt space 6 consists of a pipe, while a vortex separator with a shaped, conically tapering downwardly tapered dirt outlet has a clear width of the upper part 8 and one to the upper part 8 with a sudden opening from 6 to 8 mm is sufficient. Licher extension attached lower part 9 with the

According to a further proposal of the invention 35 flushing water inlet 19, to which the means of the a flushing water supply line 12, which can be shut off according to one of the methods of valve 13, is appropriate for operation the invention suitable vortex separator includes. The conical upper part 8 is either in with a conical, downwardly tapering upper whole formed transparent or at least with Dirt space part and a sight glass 34 provided on it with sudden expansion. The slide 7 and terung attached lower dirt space part size 40 the valve 13 is assigned a timer 14, ren cross-section and in this lower dirt space according to the setting part in the timer 14 draining water supply line at expedient time intervals via a servo motor 15 or designed so that the upper dirt space part 16 opens the slide 7 or the valve 13 or has such a cone angle that it closes. The shut-off devices 7 and 13 are included Flow rate of the flushing water from the 45 assigned to one another in such a way that the open position The confluence of the flushing water supply line up to the largest one corresponds to the closed position of the other, th flow cross-section of the conical upper The vortex separator of the embodiment Dirty space part reduced to about half. according to FIG. 2 is designed as in FIG. Therefore The size of the cone to be used in the individual case is only shown in the lower part of the vortex tube 1. At winkeis depends on the one hand on the size of the vortex tube 1 closes the dirt space 31 End cross-sections of the conical top of the dirt space, which in this case consists of a conical partly, partly depending on its length. below tapering upper part 17, one on this with

What is advantageous here is the lower part 18 connected according to a further sudden expansion

Thoughts of the invention - in one with either the flushing water inlet and another, yourself

At least partially conical vortex tube formed 55 conical tube 20 adjoining the lower part

th vortex separator consists of the cone angle of the upper one, the outlet 21 of which is

The dirt space part is much smaller than the cone valve 22 is closed off. Instead of the conical

angle on the vortex tube. Tube 20 can also be a cylindrical tube

To be turned around the dirt separation in the dirt container. At the flushing water inlet, an upper part is well observed and accordingly the flushing water supply line 23 is connected, which is to be able to correctly set a valve 24 controlled by a timer 28 by means of flushing water volume and the time sequence of the time, tils 24 can be shut off. The reversing valve 22, which was also controlled from the time in a further development of the invention, the cylinder switch mechanism 28, is designed as a threshed or conical upper dirt space part we three-way valve,
at least partially made of transparent material. 65 The facility works in the following way:

The vortex separator according to the invention can during the flushing process is flushed through line 23

nen za a multi-stage system connected together water introduced into the dirt space 31, from which

tet, with the fiber suspension several a small amount, e.g. B 51 / min, through the conical

Dirt chamber upper part 17 out into the vortex tube 1 upwards and its larger part, for. B. 100 l / min, flows through the conical tube 20 and the outlet 21 into a settling box 25. With this large amounts of flushing water also get the medium and coarse dirt particles out of the dirt chamber lower part 18 and the conical tube 20 in the settling box 25. These debris settle on Bottom of the sedimentation box 25, while the water via an overflow 26 of a booster pump 27 flows in. The pump 27 presses the water through a line 29 in the circuit into the flushing water line 23. When the flushing water valve 24 is closed, the circuit is interrupted and the from the Fine dirt particles flowing out of the dirt space are controlled by switching the three-way valve 22 Discharged separately via a dirt line 30. During this time, the pump 27 delivers via the overflow valve 35 the rinsing water back into the settling box 25.

At 36 'and 37' is one opening into the container 25 Fresh water supply line labeled with float control.

In the case of the one shown in FIG. 3 shown embodiment consists of the vortex tube 1 (des otherwise as in FIG. 1 trained vortex separator) subsequent dirt space 32 from the conical upper part 36 and the wide lower part 33. To the lower part 33 is in the same way as with the other exemplary embodiments, a flushing water supply line 37 is connected, which is connected to one of the timer 38 is provided via a servomotor 39 controlled shut-off valve 40. The inlet of the flushing water supply line 37 is located directly below the ceiling of the dirt space lower part 33. The Dirt chamber outlet 41 is arranged in an outlet pipe 42 fastened in the ceiling of the lower part 33, which is followed by a discharge line 43.

During the flushing period, the dirt chamber bottom part 33 is discharged through the continuously open dirt chamber outlet 41 medium-sized dirt particles removed. The fine and finest particles of dirt that prevented from settling due to the backwashing, accumulate in the conical dirt space upper part 36, arrive only during the periodic and brief interruption of the flushing water supply to the Dirt chamber lower part 33, from which it is discharged through the continuously open dirt chamber outlet 41 to 43 will. The coarse dirt collects continuously on the floor of the dirt space lower part 33 and is occasionally removed from this by folding out the base by means of the lever 46 will. For cleaning the dirt chamber outlet pipe 41 and for eliminating any one that may occur Blockages, an externally operated device 44 is provided.

The conical dirt space upper part 36 consists of a transparent material.

Claims (12)

Claims: 60 1. Process for removing the debris from cleaning by means of a vortex separator accumulating dirt particles from a below the lower outlet of the vortex separator arranged, having a flushing water supply line and a dirt outlet opening Dirty space, especially from fiber suspensions for the manufacture of paper or cardboard, characterized in that the rinsing water supply line (12, 23, 37) in itself repeating, arbitrarily adjustable time intervals are closed so briefly that the resulting sinking separation zone of the fibers from the dirt particles the rinsing water supply line not reached, the dirt chamber inlet (8, 17, 36) kept open and the Dirt chamber outlet (47, 21, 44) at least during the closing period of the flushing water supply line is held open. 2. The method according to claim 1, characterized in that the coarse and the fine Particle-containing dirt collectively through the only within the closing time of the rinsing water supply (12) kept open dirt chamber outlet (47) is discharged. 3. The method according to claim 1, characterized in that the continuously open dirt space outlet (21) is connected to a line provided with a settling box (25) while the flushing water supply line (23) is open is, through which predominantly the coarse dirt particles are removed from the dirt space (31) cleaned by settling the coarse dirt particles in the sedimentation box Recirculated water through a line (29) to the flushing water supply line (23) is, and that also this dirty space outlet during the closing period of the flushing water supply line connected to a separate discharge line (30) with interruption of the circuit through which predominantly the fine dirt particles are removed. 4. The method according to claim 1, characterized in that by a known per se, constantly open, arranged at a sufficient distance from the floor of the dirty room Dirt chamber outlet (41) during the opening period of the flushing water supply line (37) is medium coarse Dirt particles and fine and extremely fine during the closing time of the flushing water supply line Dirt particles are pulled off, while the coarse dirt particles at the bottom of the dirt space collected and occasionally removed by opening the bottom. 5. vortex separator for performing the method according to any one of claims 1 to 4, the one provided with a discharge pipe for the cleaned suspension (accept) and has a dirt space, the upper part of the dirt space at the bottom of the outlet opening of the vortex tube with the same diameter as this is connected and in its at least one outlet having the lower dirty space part opens a flushing water supply line, characterized in that with a constantly open connection between vortex tube and Dirty space of the flushing water supply line (12, 23, 37) an automatically working pulse generator (14, 28, 38) is assigned, e.g. B. a timer, which in an arbitrarily adjustable Sequence of times the alternating opening and closing of the shut-off element (13,24,40) of the flushing water supply line causes. 6. vortex separator according to claim 5 with an upper dirt space part and a lower 509 628/263 Ren dirt space part of larger cross-section, which is attached to the upper dirt space part with a sudden Extension is set, characterized in that the upper dirt space part (8,17, 36) has constant or steadily decreasing flow cross-section and that also the automatically controlled flushing water supply line (12,23,37) to the lower dirty space part larger cross-section (9,18,38) immediately below the sudden expansion connected. 7. vortex separator according to claim 5 or 6 for performing the method according to claim 2, characterized in that the outlet opening (47) of the dirt space (6) has a shut-off device (7) is assigned, from which the shut-off element (13) of the flushing water supply line (12) controlling pulse generator (14) is controlled, the open position of a shut-off device is assigned to the closed position of the other. ao 8. vortex separator according to claim 5 or 6, for performing the method according to claim 3, characterized in that a settling box below the dirt space outlet (21) (25) is arranged, to which one via a pressure booster pump (27) to the flushing water supply line (23) leading line (29) is connected, and that also the dirt chamber outlet (21) controlled by the pulse generator (28) controlling the shut-off element (24) of the flushing water supply line (23) Reversing device (22) is assigned, which alternately connects to the dirt chamber outlet (21) the settling box (25) and - with the flushing water supply line (23) closed - to a separate one Drain line (30) connects. 9. vortex separator according to claim 5 or 6, for performing the method according to claim 4, characterized in that in a known manner a constantly open in sufficient Distance from the bottom of the dirt space arranged dirt space outlet (41) in the upper area of the lower dirt space part (33) arranged larger cross-section and that in its lower region, preferably in its bottom, a further outlet with an arbitrarily operated shutter, for example a flap (45) is provided. 10. Vortex separator with upper dirt space part tapering downwards and the lower part of the dirt space with a larger cross-section attached to it with a sudden expansion and flushing water supply line according to one of the claims opening into this lower dirty space part 6 to 9, characterized in that the upper dirt space part (8,17,36) has such a Has cone angle that the flow rate of the flushing water from the confluence the flushing water supply line (12, 23, 37) up to the largest flow cross-section of the conical the upper part of the dirty space reduced to about half. 11. vortex separator according to claim 10, with at least partially conical vortex tube, characterized characterized in that the cone angle of the upper dirt space part (8,17,36) is essential is smaller than the cone angle on the vortex tube (1). 12. Vortex separator according to one of claims 6 to 11, characterized in that the cylindrical or conical upper dirt space part (8, 17, 36) at least partially transparent material. Considered publications:
German patent specification No. 746 910. 1 sheet of drawings 509 628/263 6.65 © Bundesdruckerei Berlin