DE19509059C1 - Controlled sepn. into two-stream fluid system - Google Patents

Abstract

A device has a control arrangement where an incoming fluid passage is split into two branches, each of which has a filter, which are then recombined into a delivery passage. The controls consist principally of a rotary valve which, when turned out of the working position, allows filtration through one branch whilst the filter in the other branch is automatically cleaned by backwashing.

Description

The present invention relates to a control device for at least two fluid sub-streams with the characteristics of the Oberbe handles of claim 1.

There is a common problem in the art that fluid flows need to be filtered. To solve this problem, it is known, for example, a corresponding filter device to be arranged in a fluid channel, the fluid then Filter device happens in such a way that the Fluid containing unwanted particles are filtered off. In addition, there are corresponding filter devices at which the main fluid flow, starting from a common one Fluid supply channel, is divided into several fluid subchannels. Seen downstream in the flow direction of the fluid Fluid sub-channels are then the fluid sub-flows again in egg summarized nem common fluid discharge channel.

In the fluid subchannels of, for example, EP 0 250 695 A1  Known filter devices are then arranged, where each filter optionally from both fluid sub-streams at the same time flowed through or only a filter of the corresponding Fluid partial flow is flowed through, while the other Filters backwashed with the fluid in this production position and thus regenerated. Furthermore, the filters are at the known filter device in corresponding filter media arranged body, each filter support body at the filter device known from EP 0 250 695 A1 as a filter bolt formed and axially displaceable in a housing Filter device is mounted such that the filter from ih Filter position by shifting the carrier body can be transferred to a rinsing or regeneration position. This is then in this rinsing or regeneration position suitable filters with a flushing channel open to the atmosphere connected so that the particles filtered off by the filter the regeneration of the filter to the outside.

The known filter device described above has one relatively complex structure. This is due to the fact that a large number of subchannels have to be aligned with one another since otherwise there is a risk that current dead zones train that ultimately to plug the known Can lead filter device.

In the post-published publication DE 44 08 803 C1 is a tax Direction described for at least two partial fluid flows, where  in the control device a common fluid supply channel and has a common fluid discharge channel. Between the The fluid supply channel and the fluid discharge channel are at least two Fluid sub-channels arranged, each fluid sub-channel one Filter device is assigned. Upstream of the filter one each filter device is at the previously reported tax direction provided a valve device, the locking by means of this valve device between a first position in which the fluid flowing in the channels is filtered is, and a second position in which the fluid in the min least a subchannel is filtered while at the same time the filters arranged in the at least other subchannel direction is flushed through the fluid, is movable, wherein in the previously reported control device, the movement of the Locking means by an axial displacement of the same to be led.

The present invention has for its object a Control device of the type specified for at least two To provide partial fluid streams that are special has a simple structure.

This object is achieved by a Steuereinrich tion with the characterizing features of claim 1 solved.

The control device according to the invention for at least two Partial fluid flows, as already described above registered control device, a common  Fluid supply channel and a common fluid discharge channel, wherein the fluid supply channel with the fluid discharge channel over min least two fluid sub-channels is connected. Any fluid part nal is assigned a filter device, one or more rere filter of the filter device with that by the respective Fluid subchannel flowing fluid is in contact, so from the sem, the fluid flowing in the fluid sub-channel the unwanted To filter out particles. Furthermore, the fiction control device at least one, with at least one Locking means provided valve means, the locking by means of the valve device at least one of the channels (Fluid supply channel, fluid discharge channel, fluid sub-channel) such is assigned that the locking means between a first Position in which the fluid flowing in the channels filters is, and a second position in which the fluid in the min least a subchannel is filtered while at the same time the filters arranged in the at least other subchannel direction or the associated filter or the ge appropriate filter is flushed or can be moved. Around one of these two positions (first or second position) to bring about the control device according to the invention the respective locking means rotatably mounted such that it is made of the first to the second position or from the second to the first position can be transferred by a corresponding rotation is. In other words, the one in the present differs tax application claimed according to the invention tion from the previously reported tax device according to German patent application P 44 08 803.5- 24 initially essentially in that in the fiction  the control device the locking means of the valve device not axially displaceable but instead rotatably mounted is.

A major advantage of the Steuereinrich invention can be seen in the fact that they flow through the arranged at least two fluid sub-channels of the ent speaking filter devices and thus a separation of the unwanted particles from the fluid, or removing the separated particles from at least one filter or at the same time filtering and at least cleaning allows a fluid flow of undesirable particles, wäh the other filter or the other fil ter is flushed out by the fluid.

The control device according to the invention has a number of further advantages. So it should first be noted that the control device according to the invention compared to that of the A filter device known from EP 0 250 695 A1 is particularly suitable has a simple design, since only a few channels are required here are necessary to the three operating modes listed above enable. This is due to the fact that, in contrast to the State of the art at the beginning of the invention The control device consciously recognizes the at least one valve direction is arranged separately from the filter device. Through such a separate arrangement of the filter device and the at least one valve device is furthermore possible a particularly trouble-free operation of the inventions to achieve control device according to the invention. Another before  part of the control device according to the invention is to be se hen that if the valve device wears only this and not at the same time the filter device as a whole, d. H. thus also the filter carrier body can be replaced must, so that the corresponding repair is relatively inexpensive and can be carried out with less effort. As we significant advantage of the control device according to the invention to see that this control device allows one Change of color or material of the to be filtered Fluids, especially when using the control device Extruders for thermoplastic, a lightweight and bring about problem-free flushing of the control device. This not only saves production time but also in particular to reduce incorrect production or wrong colors. Furthermore, the invention dispenses with Control device as small as possible to suit dimensioned channels, so that a clogging of these gen channels is avoided, which is especially so is important if the control device according to the invention for filtering relatively unstable and easy to ver cracking plastics is used. Compared to the one previously announced and not yet published German application known axial Ver pushing the locking means allows the according to the invention ß control device provided rotatable storage of the lock with a much more precise and faster setting development of the first and second positions of the Locking agent, which leads to that in the invention Control device unwanted pressure fluctuations or pressure  bumps in the fluid to be filtered, especially in the ther plastic plastic liquid, can be avoided.

To the previously in the control device according to the invention to enable the spoken modes of operation sees a first, particularly simple embodiment of the inventions control device according to the invention that this embodiment has a single valve device. Regarding the arrangement tion of this single valve device there are several possibilities options as described below.

So the first possibility is that the only valve is has only a single locking means, the one zige locking means the fluid supply channel in the area of the Abzwei supply of the fluid sub-channels is assigned. Here is this Locking means then designed so that it is optionally between the first position in which flows through the fluid sub-channels fluid is filtered, and the second position in which the fluid is further filtered in at least one subchannel, while that in the other subchannel or the other Sub-channels arranged filters or the arranged filters is flushed through the fluid, is rotatable. In the second Position is preferably thanks to the fluid supply to the other Subchannel or the other subchannels blocked, so that the especially a backwash of the filter or filters instead det, as follows in more detail in one version Example is explained in more detail.  

The second possibility of the control device according to the invention tion, which is also only a single valve device and one has only blocking means, provides that the only one Locking means is assigned to all fluid subchannels. Here will by rotating the locking means either the first or second position set, this embodiment too below with reference to a specific embodiment is explained in more detail.

In another embodiment of the invention Control device has the control device according to the invention a number corresponding to the number of fluid subchannels Valve devices, each valve device with a blocking agent that is in the fluid flow of the respective Fluid sub-channel is arranged, is provided. Here is at this other embodiment of the tax according to the invention device thus arranged in each fluid subchannel netes locking means individually by rotating from the first Transfer position to the second position and vice versa bar, with the embodiment according to the invention Of course, the control device does not simultaneously control all the valves l devices are in the same position of the locking means allowed to.

Basically, the control device according to the invention with regard to the number of subchannels that At least two subchannels must be available to complete the previous operating modes that have already been repeated several times (first position, second position). It is particularly suitable  if the control device according to the invention two to eight Fluid subchannels, preferably two to four fluid subchannels, having.

Another embodiment of the control unit according to the invention direction has two fluid subchannels and two, the Valve devices associated with fluid subchannels, each Blocking means of each valve device a fluid sub-channel assigned and rotatably mounted, such that it from the first position to the second position and vice versa is feasible.

A further development of the previously described embodiments provides that the locking means of each valve device can be transferred to a third position by rotation is, with a fluid in the third position of the locking means current to the atmosphere takes place. With this training the control device according to the invention can thus block medium or can thus the blocking means between a first Position, a second position and the one described above third position can be rotated back and forth so that depending on the desired operating state and the Position of the locking means or the locking means into the fluid is filtered completely, a partial flow of the fluid is filtered rend at the same time another partial flow of the fluid Backwashing the filter is used, the be with particles charged fluid is discharged to the atmosphere or the fluid current is removed directly bypassing the filter, whereby then in particular back to the latter option  is used if strong Ver dirt is present in the fluid. It goes without saying it is possible in the previously described embodiment of the Control device according to the invention not only the locking means from the first position to the second position and from the second position then in the third position or vice versa to transfer to this. Rather, the blocking means can also for example, from the first position directly to the third position or vice versa or from the third position choice point to the second position or directly to the first position are transferred without the second position must be run.

The above is only general in connection with the valve device or the valve devices and of the locking device tel or the blocking means have been spoken. Regarding the concrete design of the locking means in the fiction There are various control devices Possibilities. Basically, it should be noted that the Locking means must be rotatably mounted and in a first position lung, a second position and possibly also in the previously be written third position must be feasible.

A preferred embodiment of the tax according to the invention device provides that each person's locking means Valve device is designed as a cylindrical bolt, the cylindrical bolt being fluid-tight in one the housing bore is arranged. Regarding the alignment this bolt is to be noted that the bolt in fluid flows  direction seen in this embodiment essentially Chen is oriented vertically, which means that the fluid flow direction and the longitudinal axis of the cylindrical pin are aligned at an angle of approximately 90 °. Furthermore is the rotatably arranged bolt in the housing bore provided a passage opening, said passage opening voltage then with an arrangement of the cylindrical bolt in Fluid supply channel can be aligned with the fluid supply channel and with this then also in alignment, while with an arrangement of cylindrical bolt in the fluid subchannel the passage opening can be aligned with the fluid subchannel and with the respective one Fluid subchannel is then also aligned, so that in the first position development of the cylindrical bolt then the fluid flow through entry opening can pass unhindered while in the two th position of the bolt this opening after Verdre hen the bolt is closed, as is shown below an embodiment is explained in more detail.

In a further development of the embodiment described above, at who designed the locking means as a cylindrical bolt has a further embodiment of the invention Control device on such a bolt, which by rotation can also be transferred to a third position, whereby in the third position of the bolt a fluid flow or Partial fluid flow to the atmosphere takes place.

To this third position of the bolt described above enable, this training provides a bolt that not just the one already described above  but also in the area of the cylinder jacket has a recess, this recess extends only over a partial circumference of the jacket of the bolt and at the same axial height as the passage opening is arranged. With a corresponding rotation of the bolt furthermore this recess with a to the atmosphere Sphere open drain opening aligned, so that optionally in the first bolt position either the fluid through the through flow or after turning the bolt Fluid flow is blocked or after another rotation of the Bolzens the recess is aligned with the drain opening, so that In this way, fluid or part of the fluid to the atmosphere sphere is discharged out of the control device.

In particular, the control device according to the invention the drain opening is designed as a drain channel, the Drain channel is arranged such that its axial length is possible is kept as short as possible until this channel leads to the atmosphere flows.

Especially when the control device according to the invention has such a configuration in which each fluid component is approx nal the previously described and out as a cylindrical bolt contains blocking means formed, this embodiment allows one individual adjustment of the flow conditions and return rinsing cycles to the respective requirements.

In a further embodiment of the invention Control device is the blocking means of each valve  direction, as described above, as a cylindrical ger bolt, but rather as a disk-shaped locking means educated. This is a disk-shaped locking device then, when it is arranged in the fluid supply channel, for Flow direction of the fluid in the fluid supply channel, or if there is arranged in the fluid subchannels, such as to the flow direction device of the fluid in the fluid sub-channels aligned that the End faces of the disk-shaped locking means essentially is positioned perpendicular to the direction of flow of the fluid. This means that the end faces of the disc-shaped Blocking means essentially at an angle of 90 ° to the Flow direction of the fluid in the fluid supply channel or in the Fluid sub-channels is aligned. Furthermore, it is shitty ben-shaped locking means with at least a first through provided opening, this passage opening from one face to the other face of the schei ben-shaped locking means extends. This first pass opening, which is preferably designed as a through hole is when the disc-shaped blocking agent is in the fluid supply channel is arranged on the fluid supply channel and then, if the disc-shaped blocking means in the fluid sub-channels is arranged, can be aligned to the fluid subchannels in such a way that by rotating the disc-shaped locking means, the first Passage opening with the fluid supply channel or Fluid sub-channels are aligned, whereby the first position of the disc-shaped locking means is brought about. Another one Turning then causes the first passage opening no longer in alignment with the fluid supply channel or the Fluid sub-channels is located, creating a fluid flow in these  Channels is interrupted, so that then the disk-shaped locking means in its second position.

A further development of the previously described embodiment of the control device according to the invention, which is a disk-shaped Locking means, provides that by turning the schei ben-shaped locking means additionally a third position is adjustable, with a fluid in this third position current to the atmosphere.

To this third position of the disk-shaped locking means and the associated discharge of a fluid flow to the atmosphere the disk-shaped locking device points towards the sphere a recess arranged in the disk-shaped locking means on that with a drain opening open to the atmosphere flees. However, this recess extends only over part of the thickness of the disc-shaped locking means.

Basically, this drain opening can be designed as desired provided that it ensures that this drain opening the fluid can also be discharged to the atmosphere. Ins it is particularly useful to use this drain opening as a drain nal design, this drain channel then in front preferably as radial through the disk-shaped locking means the recess extending drain channel is formed.

Above was in connection with the blocking agent disk-shaped locking means described, it is not he it is imperative that this is absolutely necessary  Blocking agent must act, the end faces as complete Circles are formed. Here it is very possible to take part provide disk-shaped locking means, the end faces then the shape of a semicircle or a segment of a circle point.

Another embodiment of the control unit according to the invention direction provides that this is the locking means of the valve direction or the blocking means of the valve devices single Lich between the first position and the second position is or are rotatable. In order to do this, however, a discharge of fluid contaminated partial flow of particles whatever is desired if at least one filter the valve device is flushed or backwashed this embodiment of the control device according to the invention at least one additional shut-off valve that the Fluid supply channel, the fluid discharge channel, each fluid sub-channel or is assigned to each filter device. This barrier valve then closes an opening in its locked position to the atmosphere while it is in its open position allows a fluid flow contaminated with particles can be removed from the control device to the atmosphere.

With regard to the design of the in the invention Control device provided filter device is fixed too keep that basically this filter device any can be designed, if it is ensured that the to filtering partial fluid stream actually evenly that at least one filter arranged in the filter device  flows through. Especially when the invention Control device for cleaning thermoplastic art masses of material is used, it is appropriate that the Fil tereinrichtung at least one arranged in a bolt Includes filter, preferably this pin then axially slidable within a corresponding housing bore Control device is arranged such that for changing the Filters then only an axial displacement of the bolt has taken place. Such a filter arrangement is fundamental known and in various forms in production sentence.

To in such an embodiment of the invention Control device vorzu the previously described shut-off valve see, it makes sense to close this shut-off valve to the room order, which is provided upstream of the filter. Hereby it is possible that the backwashing of the filter with Particle-laden fluid in the immediate vicinity of the Filters can be discharged to the atmosphere, if the shut-off valve is in its open position. A such arrangement of the shut-off valve also has the Advantage on the space upstream of the filter in the back rinsing position can be properly freed of foreign particles can, so that a corresponding rain within a very short time Filtered again for the filtration of the partial fluid flow is available.

In particular, in this embodiment described above form the shut-off valve at the mouth of the room  the atmosphere connecting drainage channel arranged and preferably designed as a poppet valve.

Above is in connection with the tax according to the invention device described a variety of embodiments, where predominantly the regeneration of the particles loaded filter surfaces in that in the second Position of the locking means of the valve device at least one Partial fluid stream is filtered while at least one other Partial fluid flow is deflected and that to be regenerated Channels belonging to the filter and thus the filter opposite flows through to the usual flow direction and thereby on particles separated from the surface of the filter. Such an operation is in the present application called backwashing. The following executions Forms of the control device according to the invention each have but such a construction that not Direction of flow used to regenerate the filter Fluid flow is diverted in its direction so that this type of regeneration also briefly as a rinse of the filter.

In order to enable the filter to be flushed, sees another embodiment of the invention Control device before that that already described above Shut-off valve, which in its open position is a drain allows a partial fluid flow to the atmosphere, downstream of the filter is arranged. In this embodiment then the filter provided in the fluid stream to be filtered  stored so that the loaded with dirt or particles Filter area by changing the position of the filter can be flushed out by the fluid, after flushing the filter surface with particles laden with particles then over the open shut-off valve can be discharged to the atmosphere. With in other words, he waives this embodiment of the control device according to the invention, in the regeneration position to ver the flow direction of a partial fluid flow change and instead change the position of the filter that then released accordingly by the associated partial fluid flow is rinsed.

To change in this embodiment the previously mentioned It is advisable to bring about the position of the filter on, turn the filter in the previously described bolt to be stored in cash.

A further development of the previously described embodiment of the control device according to the invention, in which a in its Po sition changeable filter is provided, that the Shutoff valve then further assigned to the filter is that it is the space located downstream of the filter or the Section of the respective fluid subchannel from locks so that when flushing the filter with Particles contaminated partial fluid flow completely to the atmosphere sphere is dissipated. This embodiment of the inventions control device according to the invention always arrives in particular for use when the particles rinsed off the filter not due to gravity in the floor area of the room or  of the fluid subchannel section and accumulate on the bottom side be completely drained through the open shut-off valve can.

To training in the control device according to the invention preventing flow dead zones, sees one particularly advantageous development of the Steuerein invention direction that in the connection area of the fluid supply channel with the fluid subchannels increase the turbulence of the fluid existing facility is provided. This will in particular suitably further ensures that all Fluid sub-channels that in the connection area of the Fluidzufuhrka branch off, always supplied with the same amount of fluid will. Depending on the respective fluid, devices that increase the turbulence of the fluid, for example as a coarse mesh sieve or as in the connection areas protruding projections or baffles can be formed.

As already mentioned several times above, the invention is invented Control device according to the invention, in particular in the case of melt pumps and / or extruders used for the extrusion of thermo plastic plastics are used. Here, the Control device then designed in such a way and with suitable ones Bracket elements provided that the control device in egg ner position downstream of the screw conveyor of the plastic extrusion ders and / or the melt pump and upstream of the tool, in particular the nozzle, the same is arranged. Conditionally there by that in such an arrangement the Steuereinrich tion inevitably a considerable fluid pressure upstream of the nozzle  is built, the inventions in such embodiments Control device according to the invention, which in the regeneration of Filters or the filter backwash them on the arrangement a further Ven assigned to the fluid discharge channel tileinrichtung be waived.

However, the control device according to the invention for others Purposes, it is recommended to use the fluid drainage channel assign a further valve device, this further Valve device at least a first valve position in which the amount of fluid through the fluid discharge channel is not limited, and a second valve position in which the fluid amount of fluid to be conveyed is limited got to.

A special and particularly suitable embodiment of the control device according to the invention, the two fluid sub-channels and two valve devices assigned to the fluid subchannels each locking means each by rotation from the first position to the second position and vice versa is feasible, provides that each fluid sub-channel he Most channel section arranged downstream of the fluid supply channel has, the first channel section at an angle α is arranged from 120 ° to 160 ° relative to the fluid supply channel. This is then seen in the direction of fluid flow each a second channel section, the two two th channel sections of the two fluid sub-channels essentially run in parallel. This is followed by fluid flows seen direction a third channel section, the  at an angle β of 120 ° to 140 ° from the second channel cut inclined relative to the common fluid discharge channel is arranged. Such an arrangement and design of the Fluid subchannels ensures that through each fluid subchannel the same amount of fluid is transported, especially if if the control device according to the invention in an extruder and / or a melt pump for thermoplastics is used.

In a development of the previously described embodiments of the control device according to the invention is in every first channel section then preferably be in the above sense Written valve device provided.

To ensure that the associated with each fluid subchannel Filter device good, especially for maintenance work, is accessible, it is recommended to use this filter device in Development of the special execution described above position in the second channel section.

Advantageous further development of the control unit according to the invention direction are specified in the subclaims.

The control device according to the invention is described below of six embodiments in conjunction with the drawing explained in more detail. Show it:

Figs. 1 to 4 in direction a first embodiment of Steuerein, wherein

Figure 1 is a schematic side view in section of the control device in the first position of the locking means.

FIG. 2 is a schematic sectional view along the line AB in FIG. 1;

Figure 3 is a schematic sectional view of the control device in the second position of the locking means.

Fig. 4 is a sectional view taken along the line AB in Fig. 3;

Figure 5 device. To 8 show a second embodiment of the Steuerein, wherein

Figure 5 is a schematic side view in section of the control device in the first position of the locking means.

FIG. 6 shows a schematic sectional view along the line AB in FIG. 5;

Fig. 7 is a schematic sectional view of the control device in the second position of the locking means;

Fig. 8 is a sectional view taken along line AB in Fig. 7;

Figure 9 device. To 14 a third embodiment of Steuerein, wherein

Fig. 9 is a schematic side view of the control device in the first position of the locking means;

FIG. 10 is a schematic sectional view along the line CD in FIG. 9;

Figure 11 is a schematic sectional view of the locking means in the first position.

Fig. 12 is a schematic side view of the control device in the second position of the locking means;

Fig. 13 is a sectional view taken along the line CD in Fig. 12;

Figure 14 represents a schematic sectional view of the locking means in the second position.

Fig 15 device. To 18 a fourth embodiment of Steuerein, wherein

Fig. 15 is a schematic side view of the control device in the first position of the locking means;

Fig. 16 is a sectional view taken along the line AB in Fig. 15;

FIG. 17 shows a sectional view along the line AB in FIG. 15, but in the second position of the locking means;

Fig. 18 is a sectional view taken along line AB in Fig. 15, but represented in the third position of the locking means,

Figs. 19 to 24, a fifth and sixth embodiment of the control device, wherein

Fig. 19 is a schematic side view of the control device in the first position of the locking means;

FIG. 20 is a sectional view taken along line AB in Figure 19 for a first embodiment of a disc-shaped blocking means in its first position.

21 is a sectional view taken along line AB in Figure 19 for a second embodiment of a disc-shaped blocking means in its first position..;

Fig. 22 is a schematic sectional view of the control device in the second position of the locking means;

Fig. 23 is a sectional view taken along line AB in Figure 22 for the first embodiment of a disc-shaped blocking means in its second position. and

FIG. 24 shows a sectional view along the line AB in FIG. 22 for the second embodiment of a disk-shaped locking means in its second position.

In FIGS. 1 to 24, the same parts are provided with the same reference numerals.

In FIGS. 1 to 4 show a first embodiment of the control device is ready. Here, this Steuerein direction in the fluid flow direction seen a fluid supply channel 10 and thereafter a valve device 3, wherein the valve means downstream of 3, two partial fluid ducts 5 and 6 from the fluid supply channel 10 branch off. A filter device 1 or 2 is arranged in each fluid subchannel 5 or 6 , the filter 13 or a filter pack 13 being perpendicular to the fluid flow direction indicated by the arrow 14 . Each fluid subchannel 5 or 6 has a first channel section 7 , a second channel section 8 adjoining it and a third channel section 9 , the channel sections 7 to 9 being numbered only for the fluid subchannel 5 . Downstream of the filter device 1 and 2 , the two fluid subchannels 5 and 6 open into a common fluid discharge channel 11 .

In the sectional view of FIG. 2, the Ventilein device 3 is then shown enlarged. Here, the valve device 3 has a valve housing 15 , wherein a locking means 16 is arranged within a bore of the valve housing 15 . The locking means 16 is in the ge shown in FIGS . 1 to 4 first embodiment out as a cylindrical bolt. Here, the cylindrical bolt 16 is aligned with the fluid supply channel 10 such that its longitudinal axis is essentially aligned at an angle of 90 °.

The bolt 16 is fluid-tight and rotatably fitted into the bore of the valve housing 15 . Furthermore, the bolt 16 has two adjacent through bores 16 a and 16 b, these two through bores 16 a and 16 b being in alignment with the fluid supply channel 10 , as shown in FIG. 2. At the same axial height as the two Durchgangsbohrun conditions 16 a and 16 b, a further bore 16 c and 16 d are arranged adjacent, the two bores 16 c and 16 d not extending over the entire radial thickness of the bolt 16 but rather open into channels 16 f, which unite to form an axially extending through the bolt 16 drain channel 20 , wherein the drain channel 20 is open to the atmosphere.

The first embodiment of the control device described above in connection with FIGS . 1 to 4 works as follows:
During the production position, as shown in FIGS. 1 and 2 and which is referred to above as the first position, the fluid to be filtered, for example the thermoplastic, is transported via the fluid supply channel 10 in the direction of arrow 14 by the control device. After passing through the valve device 3 , the locking bolt 16 of which is set in the first position ( FIG. 2), the fluid flow supplied in the direction of the arrow 14 is divided equally between the two fluid subchannels 5 and 6 and filtered there by the two filter devices 1 and 2 . After passing the filter devices 1 and 2 , the now filtrated fluid passes via the fluid discharge channel 11, for example to the tool, not shown, in particular to the nozzle, not shown, of an extruder. In this production position, the locking pin 16 of the valve device 3 is in its most he shown in Fig. 2 position, so that it does not hinder the fluid flow from the fluid supply channel 10 to the fluid discharge channel 11 .

If it is now found that a filter 13 of the Filterein device 1 or 2 is loaded with dirt particles and from there regeneration is required, the locking pin 16 is transferred from its first position shown in FIGS. 1 and 2 to a position as it is referred to above as the second position and is shown in FIGS. 3 and 4. In this second position, which can also be referred to as the backwash position, fluid is still supplied in the direction of the arrow 14 to the fluid supply channel 10 , the fluid then flowing via the fluid subchannel 6 in the direction of the fluid discharge channel 11 , such that it is the filter device 2 happens and is filtered there. The fluid subchannel 5 is shut off at this time from the fluid supply by the position of the locking bolt 16 , as shown in FIGS. 3 and 4. Due to the fact that builds up by the non-ge showed tool or by the not-shown nozzle of Extru DERS 11 downstream of the fluid discharge duct, a back pressure, is now a part flow of the fluid from the fluid discharge passage 11 via the third passage portion 9, the second channel section 8, which Filter device 1 and the first channel section 7 to the locking pin 16 ( Fig. 3), from there through the bore 16 c, which does not extend through the entire radial diameter of the locking pin, and the channel 16 f to the open to the atmosphere outflow channel 20 out, so that this fluid flow is then discharged from the control device. Be things that in this way, the fluid flow to the outside led abge opposite to the fluid filtering direction (production position), the filter 13 or the filter of the Fil tereinrichtung 1 , 13 separated particles are thereby washed off on the filter or filters and washed over the first channel section 7 , the bore 16 c, the channel 16 f and the drain channel 20 removed from the control device without the production having to be interrupted. After the backwashing has ended, the locking pin 16 is then moved back into a position as shown in FIGS. 1 and 2.

However, if the filter device 2 is to be backwashed, this is done in an analogous manner. For this purpose, it is only Lich necessary to turn the locking pin from the position shown in FIG. 1 in the counterclockwise direction of rotation into such a position that the bore 16 d is aligned with the influence of the fluid sub-channel 6 . This opens a path to the atmosphere in this position of the locking pin 16 , so that, as described above for the filter device 1 , fluid laden with dirt particles can be removed.

The second embodiment of the control device shown in FIGS. 5 to 8 differs from the previously described first embodiment of the control device in that each fluid subchannel 5 or 6 is assigned a separate valve device 3 or 4 instead of the single valve device. Furthermore, these Ventileinrich lines 3 and 4 are formed differently than the previously described only valve device, which is assigned to the fluid supply channel 10 . Otherwise, the Steuereinrichtun conditions according to FIGS. 1 to 4 (first embodiment) and the control device according to FIGS . 5 to 8 (second embodiment) do not differ.

As shown in FIG. 5, the fluid stream 14 to be filtered is fed to the two fluid sub-channels 5 and 6 via the fluid supply channel 10 . In each of the first channel section 7 of each fluid supply channel, a valve device 3 or 4 is positioned, a position (first position) of the control device being shown in FIG. 5 as it occurs in production and which enables the two partial fluid flows to be filtered. In order to achieve this, a filter device 1 or 2 is arranged in every second channel section 8 of the fluid subchannel 5 or of the fluid subchannel 6 , the corresponding third channel sections 9 then being brought together again downstream of this filter device 1 or 2 to form the fluid discharge channel 11 .

The fluid supply channel 10 is arranged relative to the first section 7 of the fluid subchannel 3 or to the first section 7 of the fluid subchannel 4 at an angle α of approximately 140 °, while the third channel section 9 is positioned relative to the fluid discharge channel 11 at an angle β of approximately 130 ° is. The at the second channel sections 8 of the two fluid sub-channels 5 and 6 run parallel.

As can best be seen from FIG. 6, each valve device 3 or 4 has a valve housing 15 which is provided with a cylindrical bore, with a locking bolt 16 and 17 being arranged in a fluid-tight manner as locking means 16 and 17 within this cylindrical bore . The cylindrical locking pins 16 and 17 are identical and rotatably arranged within the bore provided in the valve housing 15 , such that each locking pin 16 or 17 can take a position, as shown in Fig. 6, and can take a position , as shown for the locking pin 17 in FIG. 8. Due to the identical Substituted the locking pin staltung 16 and 17. Only the locking bolt 17 described in detail below.

The cylindrical locking pin 17 is arranged in the first channel from section 7 of the fluid subchannel 6 that its longitudinal axis is aligned substantially perpendicular to the fluid flow direction in the subchannel 7 . On the axial height of the partial fluid duct 7, the locking pin 17 extending over the entire radial diameter through hole 17 a, which can be so tet being rich with the first channel section 7, that as a result of the passage of the fluid is not hindered in the partial fluid duct 6, as shown in Fig. 5 for both valve devices 3 and 4 .

At the same axial height, but offset over the circumference, the cylindrical locking pin 17 is provided with a recess 17 b, this recess 17 b being connected via a partial channel 17 c to a drain channel 20 , this drain channel 20 being open to the atmosphere.

Due to the fact that the locking pin 17 is rotatable within the bore of the housing 15, which passage may optionally opening 17a or the recess 17b from the first channel section 7 of the partial fluid duct 5 or be aligned 6, wherein an alignment of the partial fluid ducts with through the openings 17 a and 16 a the fluid flow through the Ven tileinrichtung 3 and 4 not obstructed (1st position), as shown in Fig. 5, while an alignment of the opening 17 b with the first channel section 7 causes that the fluid supply to the filter device 2 is shut off, as shown in Fig. 7 for the valve device 4 (2nd position).

The second embodiment of the control device shown above in FIGS . 5 to 8 operates as follows:
During the production position, as shown in FIGS. 5 and 6 and which is referred to above as the first position, the fluid to be filtered, for example the thermoplastic, is transported via the fluid supply channel 10 in the direction of arrow 14 by the control device. After passing the valve devices 3 and 4 , the locking bolts 16 and 17 are set in the first position, the fluid flow transported in the direction of arrow 14 is filtered through the filter devices 1 and 2 provided in both fluid sub-channels 5 and 6 . After passing the Filterein devices 1 and 2 , the now filtered fluid passes through the fluid discharge channel 11, for example to the tool or to the nozzle of an extruder. In this production position, therefore, the locking bolts 16 and 17 of the valve devices 3 and 4 do not obstruct the fluid flow from the fluid supply duct 10 to the fluid discharge duct 11 .

If it is now found that a filter 13 of one of the filter devices 1 or 2 is loaded with dirt particles and regeneration is therefore necessary, the cylindrical locking pin 17 is transferred from its first position shown in FIGS. 5 and 6 to a position as it is is referred to above as the second position and as shown in FIGS. 7 and 8 for the locking pin 17 . In this second position, which can also be referred to as a backwashing position, fluid is still supplied in the direction of arrow 14 via the fluid supply channel 10 , the fluid then flowing via the fluid subchannel 5 in the direction of the fluid discharge channel 11 , such that it has the Passes filter device 1 and is filtered there. The fluid subchannel 6 is blocked at this time from the fluid supply by the position of the locking bolt 17 , as shown in FIGS. 7 and 8. Due to the fact that by the non-ge showed tool or the die of the extruder, not shown, 11 downstream of the fluid discharge duct, a back pressure builds up, is now a part flow of the fluid from the fluid discharge passage 11 via the third passage portion 9, the second channel section 8, the filter device 2 promoted to the locking pin 16 ( Fig. 7), from there via the recess 17 b, which does not extend through the entire radial diameter of the locking pin ge, and the channel 17 c to the open to the atmosphere drain channel 20 , so that this fluid flow is then discharged from the Steuerein direction. Due to the fact that opposite in this way the outwardly discharged fluid flow to the Fluidfiltrierrichtung (production position) the filter or the filter passes, are thereby rinsed off on the filter or the filters deposited particles and saving on the From 17 b, the portion of channel 17 c and the drain channel 20 removed from the control device without the production having to be interrupted. After completion of the backwashing, the locking pin 17 is then moved back into a position as shown in FIGS. 5 and 6.

If, on the other hand, the filter device 1 is to be backwashed, this is done in an analogous manner, that is to say it is only necessary to transfer the cylindrical locking bolt from the position shown in FIG. 6 to a position such as that shown in FIG. 8 for the control bolt 17 is shown. At this time, the control pin 17 is then in a position, as shown in FIG. 6.

In the two embodiments described above is thus the second position of the locking means is identical to the third Position of the locking device.

The third embodiment of the control device shown in FIGS . 9 to 14 differs from the second embodiment of the control device described previously in connection with FIGS . 5 to 8 in that the valve devices 3 and 4 are designed differently and in addition A shut-off valve is assigned to the filter devices 1 and 2 , as shown in detail in FIGS. 10 and 13.

As shown in FIG. 9, the fluid stream 14 to be filtered is supplied to the two fluid sub-channels 5 and 6 via the fluid supply channel 10 . In each of the first channel section 7 of each fluid supply channel, a valve device 3 or 4 is positioned, a position (first position) of the control device being shown in FIG. 9 as it occurs in production and which enables the two partial fluid flows to be filtered. In order to achieve this, a filter device 1 or 2 is arranged in every second channel section 8 of the fluid subchannel 5 or of the fluid subchannel 6 , the corresponding third channel sections 9 then being brought together again downstream of this filter device 1 or 2 to form the fluid discharge channel 11 .

The fluid supply channel 10 is arranged relative to the first section 7 of the fluid subchannel 3 or to the first section 7 of the fluid subchannel 4 at an angle α of approximately 140 °, while the third channel section 9 is positioned relative to the fluid discharge channel 11 at an angle β of approximately 130 ° is. The at the second channel sections 8 of the two fluid sub-channels 5 and 6 run parallel.

As can best be seen from FIG. 11, each valve device 3 or 4 has a valve housing 15 which is provided with a cylindrical bore, with a locking bolt which is arranged as a fluid-tight locking means 16 and 17 being provided within this cylindrical bore. The cylin drical locking pins 16 and 17 are identical and rotatably arranged within the bore provided in the valve housing 15 , such that each locking pin 16 or 17 can assume a position, as shown in Fig. 11, and assume a position can, as shown for the locking pin 17 in FIG. 14. Due to the identical design of the locking pin 16 and 17 , only the locking pin 17 will be described in detail below.

The cylindrical locking pin 17 ( Fig. 11) is arranged in the first channel section 7 of the fluid sub-channel 6 that its longitudinal axis is oriented substantially perpendicular to the direction of fluid flow in the sub-channel 7 . At the axial height of the fluid sub-channel 7 , the locking pin 17 has an extending over the entire radial diameter he extending passage opening 17 a, which can be aligned with the most channel section 7 , so that the passage of the fluid in the fluid sub-channel 6 does not hinder becomes, as shown in Fig. 11 for both valve devices 3 and 4 .

Furthermore, the locking pins 16 and 17 can assume a position as shown for the locking pin 17 of the Ventileinrich device 4 in Fig. 12 and in Fig. 14. This causes the fluid flow in the fluid subchannel 6 to be interrupted in this position, which is also referred to as the second position in the preceding text.

In addition to the valve devices 3 and 4 described above, the third embodiment of the control device shown in FIGS . 9 to 14 also has an additional shut-off valve for each filter device 1 and 2 , as shown in FIGS . 10 and 13. Here, this shut-off valve 30 is arranged on the foot side in each space 31 upstream of the filter 13 of the filter device 1 and the filter device 2 , the shut-off valve 30 in its closed position preventing a partial fluid flow from flowing out to the atmosphere. However, if this shut-off valve 30 is opened, as is shown tung in Fig. 13 for the lower Filtereinrich 1, it can, which is open from off valve 30 fluid via a drain passage 32 are discharged to the atmosphere, as shown in Fig. 13 by the arrow 33 is expressed.

The third embodiment of the control device described above in connection with FIGS . 9 to 14 works as follows:
During the production position, as shown in FIGS. 9 to 11 and which is referred to above as the first position, the fluid to be filtered, for example the thermoplastic, is transported via the fluid supply channel 10 in the direction of arrow 14 by the control device. After passing the valve devices 3 and 4 , the locking bolts 16 and 17 are set in the first position, the fluid flow supplied in the direction of arrow 14 is divided equally between the two fluid sub-channels 5 and 6 and filtered there by the two filter devices 1 and 2 . At this time, the shut-off valves 30 ( Fig. 10) are closed ge. After passing through the filter devices 1 and 2, the now filtered fluid reaches via the fluid discharge channel 11, for example to the tool or to the nozzle of an extruder. In this production position, the locking bolts 16 and 17 of the valve devices 3 and 4 are in their first position, shown in FIG. 11, so that the fluid flow from the fluid supply channel 10 to the fluid discharge channel 11 is not hindered thereby.

If it is now found that a filter 13 of the filter device 1 or 2 is loaded with dirt particles and from there regeneration is required, the locking pin 17 is transferred from its first position shown in FIG. 11 to a position as described above as second position is designated and is shown in FIG. 14. In this second position, which can also be referred to as a backwashing position, fluid is still supplied in the direction of arrow 14 via the fluid supply channel 10 , the fluid then flowing via the fluid subchannel 5 in the direction of the fluid discharge channel 11 , such that it has the Passes filter device 2 and is filtered there. The fluid subchannel 6 is blocked at this time from the fluid supply by the position of the locking bolt 17 , as is shown in FIG. 14 Darge. Due to the fact that a back pressure builds up downstream of the fluid discharge channel 11 through the tool or the nozzle of the extruder (not shown), a partial flow of the fluid from the fluid discharge channel 11 via the third channel is now cut off 9, the second channel section 8 , the filter device 2 promoted towards the closed locking pin 17 ( Fig. 12). At this time, however, the shut-off valve of the filter device 1 shown in FIG. 13 is open, so that the particles rinsed from the sieve surface of the filter 13 by the returned fluid can be discharged from the control device via the open shut-off valve 30 and the drain channel 32 .

However, if the filter device 2 is to be backwashed, this is done in an analogous manner. For this purpose, it is only Lich, the locking bolt 16 ( Fig. 9) in such a position as shown in Fig. 12 and Fig. 14 for the locking bolt 17 , while at this time the locking bolt 17 the flow of Fluids not obstructed by the Ventilein device 4 . Furthermore, the shut-off valve 30 of the filter device 2 is then opened, while the corresponding shut-off valve 30 of the filter device 1 is closed.

The fourth embodiment of the control device shown in FIGS . 15 to 18 corresponds with the exception of the design of the valve devices 3 and 4 and the drain channels 40 and 41 assigned to them of the second embodiment of the control device, as described above in connection with FIG. 5 until 8 was explained in more detail. Therefore, in connection with the fourth embodiment, only the following will deal with the differences that arise in comparison with the second embodiment.

In contrast to FIG. 5, FIG. 15 shows a sectional view of the control device in a side view, where the hydraulic cylinders 42 that are required to move the valve bolts 16 and 17 of the valve devices 3 are also shown schematically in FIG. 15 or 4 to rotate in the desired manner.

Furthermore, FIGS. 16 to 18 show only a partial view, this partial view showing the first channel section 7 of the fluid subchannel 5 , the valve device 3 , the filter device 1 and the second subchannel section 8 of the fluid subchannel 5 .

The valve device 3 has a valve housing, a cylindrical bore being arranged within this valve housing, which serves to receive a cylindrical valve pin 16 . This cylindrical valve pin 16 has a ste, through the entire radial diameter extending through opening 16 a, which through opening 16 a is arranged at such an axial height of the cylindrical valve pin 16 that this through opening 16 a can be aligned to the fluid sub-channel 5 , as shown in FIG. 16.

Furthermore, a recess 16 b is arranged in the jacket region of the cylindrical Ventilbol zens 16 at the same axial height as the passage opening 16 a, such that by rotating the valve pin 16 this can be transferred from its first position shown in FIG. 16 into a position is in which the recess 16 b is aligned with the opening of the drain channel 40 . This position is shown in FIG. 18.

Further, the cylindrical valve pin 16 can be brought into a position hung or by Dre, in which the fluid flow is shut off by the partial fluid duct 5 and in the same time the recess 16 b is not aligned with the drain passage 40th In this blocking position, which is shown in Fig. 17, both the fluid flow in the direction of arrow 14 and vice versa is interrupted, since in the position of the cylindrical valve body according to FIG. 17, the recess 16 b is not yet to the fluid sub-channel downstream of the valve device 3 and is not yet open upstream of the filter device 1 . As a result, a pressure is built up in the fluid system so that during the subsequent backwashing, the respective filter is flowed through with an increased initial pressure, which in turn causes a better and faster detachment of the particles and thus further reduces the regeneration time.

In the first position of the cylindrical valve pin, as shown using the example of the cylindrical valve pin 16 in FIG. 16, the partial fluid flow is not hindered by either the valve device 3 or the valve device 4 . At this point in time, both filter devices 1 and 2 are active. If one of the filter devices 1 or 2 is now to be backwashed, then the filter device 1 or the valve device 4 or 3 assigned to this filter device 2 is transferred to a position as shown in FIG. 18 for the valve device 3 by way of example. At this time, the other valve device is in the first position, as shown in FIG. 16. This leads to the fact that the valve device according to FIG. 16 does not interrupt the fluid flow flowing in this associated fluid subchannel, so that a backflow over the other fluid subchannel results, due to the back pressure then building up in front of the work or the nozzle of the extruder, which leads to locked at this time. Here, then peeled off the dirt particles from the filter 13 and over the recess 16 b and the associated drain channel leads to the atmosphere toward abge, as has already been explained in detail above in connection with the second embodiment.

The fifth and sixth embodiment of the control device shown in FIGS. 19 to 24 differs from the second embodiment of the control device described above in connection with FIGS. 5 to 8 in that the valve devices 3 and 4 are not shown as bolt-shaped locking means but instead rather are designed as a disk-shaped locking medium. Otherwise, the fifth and sixth embodiment of the control device correspond to the second embodiment.

As shown in FIG. 19, the fluid stream 14 to be filtered is supplied to the two fluid sub-channels 5 and 6 via the fluid supply channel 10 . In each of the first channel section 7 of each fluid supply channel, a valve device 3 or 4 is positioned, a position (first position) of the control device being shown in FIG. 19 as it occurs in production and which enables the two partial fluid flows to be filtered. In order to achieve this, a filter device 1 or 2 is arranged in every second channel section 8 of the fluid subchannel 5 or of the fluid subchannel 6 , the corresponding third channel sections 9 then being brought together again downstream of this filter device 1 or 2 to form the fluid discharge channel 11 .

The fluid supply channel 10 is arranged relative to the first section 7 of the fluid subchannel 3 or to the first section 7 of the fluid subchannel 4 at an angle α of approximately 140 °, while the third channel section 9 is positioned relative to the fluid discharge channel 11 at an angle β of approximately 130 ° is. The at the second channel sections 8 of the two fluid sub-channels 5 and 6 run parallel.

As can be seen 19 to 24 Figs., Each valve means 3 and 4, a valve housing 15, whereby a disc-shaped blocking means 50 is arranged rotatably within the valve housing 15. The disk-shaped locking means 50 be in the fifth embodiment of two half-shells 50 a and 50 b, as shown in FIGS. 20 and 23. The sixth embodiment of the control device, however, has a single disk-shaped locking means 50 in place of these two half disks 50 a and 50 b, this single disk-shaped locking means 50 being shown in FIGS. 21 and 24.

The disc-shaped locking means 50 and 50 a and 50 b are aligned with the fluid sub-channels 5 and 6 in such a way that their end faces are arranged substantially perpendicular to the fluid flow direction.

As can best be seen from FIG. 20 and FIG. 23, each half disk 50 a and 50 b of the disk-shaped blocking means has a passage opening 51 or 52 , these passage openings 51 or 52 being relative to each fluid subchannel 5 or 6 are arranged that depending on the rotation of the disk-shaped locking means 50, the passage openings 51 and 52 can be aligned with the respective fluid subchannel, so that the fluid flowing in this fluid subchannel is not hindered, as is shown in FIG. 19 ge is. The passage openings 51 and 52 ( FIG. 20, FIG. 23) extend through the entire material thickness of the disk-shaped locking means 50 .

Furthermore, each half disk 50 a and 50 b has a bore 53 or 54 adjacent to the passage openings 51 or 52 , these bores 53 or 54 not extending over the entire thickness of the disk-shaped locking means and each in a radially outward direction running drain channel 55 open, which is open to the atmosphere. The bores 53 and 54 are positioned such that they can be brought into a position by rotating the disk-shaped locking means in the direction of arrow 56 or vice versa, in which they are aligned with the associated fluid subchannel, as is shown in FIG. 22 and FIG . 23 is shown in each case for the bore 53. The axis of rotation of the disk-shaped locking means is formed by the bolt 57 .

In contrast to this, the ge shown in FIGS. 21 and 24 disc-shaped locking means 50 consists of one piece. Here, too, the disk-shaped locking means 50 is provided with two through openings 51 , which, however, in contrast to the embodiment described above, is not designed as a cylindrical bore but as an elliptical through opening. Furthermore, the disk-shaped locking means 50 shown in FIG. 21 has the recesses 53 and 54 described above in connection with the fifth embodiment and the drainage channels 55 are identical.

By turning the one-piece disc-shaped locking means 50 shown in FIG. 21 is brought into a position as shown in FIG. 19 and in FIG. 22.

The fifth and sixth embodiments of the control device described above operate as follows:
During the production position, as shown in FIG. 19 ge and referred to above as the first position, the fluid to be filtered, for example the thermoplastic, is transported via the fluid supply channel 10 in the direction of arrow 14 by the control device. After passing the valve devices 3 and 4 , whose common disk-shaped locking means 50 or the half disks 50 a and 50 b of which are set in the first position in which the through openings 51 and 52 are aligned with the subchannels 5 and 6 , the in Direction of arrow 14 transported fluid flow filtered through the two fluid sub-channels 5 and 6 vorgese hen filter devices 1 and 2 . After passing through the filter devices 1 and 2 , the now filtered fluid passes via the fluid discharge channel 11, for example to the tool or to the nozzle of an extruder. In this production position, therefore, the disk-shaped blocking means 50 of the valve devices 3 and 4 do not hinder the fluid flow from the fluid supply channel 10 to the fluid discharge channel 11 .

If it is now found that a filter 13 of the Filterein device 1 or 2 is loaded with dirt particles and from there regeneration is required, the disk-shaped locking means 50 or the two half disks 50 a and 50 b from his or her in transferred to the Fig. 21 or 20 gezeig th first position to a position, as it is referred to as second position before standing and as depicted in Fig. 24 and 23, respectively. In this second position, which can also be referred to as the backwash position, fluid is still supplied in the direction of arrow 14 via the Fluidzufuhrka channel 10 , the fluid then flowing over the fluid subchannel 5 in the direction of the fluid discharge channel 11 such that it is the filter device 1 happens and is filtered there. The fluid subchannel 6 is shut off at this time from the Fluidzu by the position of the locking means 50 and the two half disks 50 a and 50 b shut off, as shown in FIGS. 23 and 24. Due to the fact that by the not-shown nozzle, and the mold of the extruder 11, downstream of the fluid discharge duct, a back pressure builds up, is now a part flow of the fluid from the fluid discharge passage 11 via the third passage portion 9, the second channel section 8, the filter device 2 to the locking means 50 or 50 a and 50 b geför changed ( Fig. 22), where there via the recess 53 , which does not extend through the entire axial diameter of the locking means 50 , and the channel 55 to the atmosphere. Be thing that in this way the fluid flow led to the outside abge opposite to the fluid filtering direction (production position) passes the filter or filters, thereby the separated particles on the filter or filters are washed away and through the recess 53 and the Drain channel 55 removed from the control device without the production having to be interrupted. After the backwashing has ended, the blocking means 50 or 50 a and 50 b is then transferred back into a position as shown in FIGS. 20 and 21.

If, on the other hand, the other filter device 1 is backwashed, this is done in an analogous manner, in which case the fluid subchannel 6 is shut off and the fluid subchannel 6 is connected to the atmosphere via the recess 54 and the drainage channel 55 , while the fluid subchannel 5 is not shut off.

Claims (30)

1. Control device for at least two partial fluid streams, characterized in that the control device has a common fluid supply channel ( 10 ) and a common fluid discharge channel ( 11 ), the fluid supply channel ( 10 ) over at least two fluid partial channels ( 5 , 6 ) with the Fluid discharge channel ( 11 ) is connected that each fluid sub-channel ( 5 , 6 ) a Fil tereinrichtung ( 1 , 2 ) is assigned and that the Steuerein direction at least one, with at least one locking means ( 16 , 17 , 50 , 50 a, 50 b) provided valve device ( 3 , 4 ), the locking means ( 16 , 17 , 50 , 50 a, 50 b) of the valve device ( 3 , 4 ) being assigned to at least one of the channels ( 10 , 5 , 6 , 11 ) in this way that the locking means ( 16 , 17 , 50 , 50 a, 50 b) between a first position in which the fluid flowing in the channels ( 10 ; 5 , 6 ; 11 ) is filtered, and a two-th position in which the fluid in the at least one partial channel ( 5 ; 6 ) fil trated while at the same time the in the at least other subchannel ( 6 ; 5 ) arranged Filterein direction ( 1 , 2 ) is flushed through the fluid, is movable, and that the locking means ( 16 , 17 , 50 , 50 a, 50 b) by Dre hung from the first to the second position and vice versa can be transferred is. 2. Control device according to claim 1, characterized in that the control device has a single valve device ( 3 ). 3. A control device according to claim 2, characterized in that the single valve device (3) comprises a single locking means (16), wherein the locking means (16) to the fluid supply duct (10) in the region of the branching of the partial fluid ducts (5, 6) is ordered . 4. Control device according to claim 1 or 2, characterized in that the single valve device has a single locking means ( 50 ), the single locking means ( 50 ) being assigned to all fluid sub-channels ( 5 , 6 ). 5. Control device according to claim 1, characterized in that the control device has a number of fluid sub-channels ( 5 , 6 ) corresponding to the number of valve devices ( 3 , 4 ), each valve device ( 3 , 4 ) each with egg nem locking means ( 16 ; 17 ), which is arranged in the fluid flow of this fluid channel part ( 3 ; 4 ). 6. Control device according to claim 5, characterized in that the control device has two fluid subchannels ( 5 , 6 ) and two valve devices ( 3 , 4 ) assigned to the fluid subchannels, each locking means ( 16 , 17 ) of each valve device ( 3 , 4 ) can be brought by rotation from the first position into the second position and vice versa. 7. Control device according to one of the preceding claims, characterized in that the locking means ( 16 , 17 ) one each of the valve means ( 3 , 4 ) can be transferred by rotation further into a third position, wherein in the third position of the locking means ( 16 , 17th ) there is a fluid flow to the atmosphere. 8. Control device according to one of claims 1 to 3, 5 or 6, characterized in that the locking means of each valve device is ausgebil det as a cylindrical bolt ( 16 , 17 ), the cylindrical bolt ( 16 , 17 ) in Chen perpendicularly to wesentli the direction of flow of the fluid in the fluid supply channel ( 10 ) or in the fluid sub-channels ( 5 , 6 ) is aligned that the bolt ( 16 , 17 ) is provided with a passage opening ( 16 a, 16 b, 16 c, 17 a) , The channel on the Fluidzufuhrka ( 10 ) or the fluid sub-channels ( 5 , 6 ) can be aligned, and that by rotating the bolt ( 16 ) either the first position or the second position is adjustable. 9. Control device according to claim 7 or 8, characterized in that by the rotation of the bolt ( 16 , 17 ) additional Lich the third position is adjustable. 10. Control device according to claim 9, characterized in that in the third position of the bolt ( 16 , 17 ) in the loading area of the cylinder jacket of the bolt arranged recess ( 16 c, 16 d, 17 b) with an open to the atmosphere drain opening ( 20 ) is aligned. 11. Control device according to claim 10, characterized in that the drain opening as a drain channel ( 20 ) is ausgebil det. 12. Control device according to one of claims 8 to 11, characterized in that each fluid sub-channel is assigned a locking means designed as a cylindrical bolt ( 16 , 17 ). 13. Control device according to one of claims 1 to 7, characterized in that the locking means ( 50 ) of each valve device ( 3 , 4 ) is designed as a disc-shaped locking means ( 50 , 50 a, 50 b), the end faces of the disc-shaped Locking means ( 50 , 50 a, 50 b) are aligned substantially perpendicular to the direction of flow of the fluid in the fluid supply channel or in the fluid sub-channels ( 5 , 6 ), that the disc-shaped locking means ( 50 , 50 a, 50 b) with at least one ner Passage opening ( 51 , 52 ) is provided, which on the fluid supply channel ( 10 ) or the fluid sub-channels ( 5 , 6 ) can be directed, and that by rotating the disc-shaped locking means ( 50 , 50 a, 50 b) either the first position or the second position is adjustable. 14. Control device according to claim 7 and 13, characterized records that by rotating the disc-shaped locking means the third position can also be set. 15. Control device according to claim 14, characterized in that in the third position of the disc-shaped locking means ( 50 , 50 a, 50 b) a recess in the disc-shaped locking means ( 53 , 54 ) with an open to the atmosphere drain opening ( 55 ) flees. 16. Control device according to claim 15, characterized in that the drain opening ( 55 ) is designed as a drain channel. 17. Control device according to claim 16, characterized in that the drain channel ( 55 ) is designed as a radially through the disc-shaped locking means ( 50 , 50 a, 50 b) extending drain channel. 18. Control device according to one of claims 13 to 17, there characterized in that the disc-shaped locking means as partially disk-shaped locking means is formed. 19. Control device according to one of claims 1 to 6, 8, 13 or 18, characterized in that each fluid sub-channel ( 5 , 6 ) or each filter device ( 1 , 2 ) is assigned a shut-off valve ( 30 ), in the locked position of the shut-off valve ( 30 ) an opening ( 32 ) to the atmosphere is closed. 20. Control device according to one of the preceding claims, characterized in that the filter device ( 1 , 2 ) has at least one filter arranged in a bolt ( 13 ). 21. Control device according to claim 19 or 20, characterized in that the shut-off valve ( 30 ) is assigned to the space ( 31 ) current on the filter ( 13 ). 22. Control device according to claim 21, characterized in that the shut-off valve ( 30 ) is arranged at the mouth of a drainage channel ( 32 ) connecting the space ( 31 ) with the atmosphere. 23. Control device according to claim 19, characterized in net that the shut-off valve is arranged downstream of the filter and that the filter is arranged in the fluid flow and such ge is stored by filtering the fluid with Parti loaded filter surface by changing the position the filter can be flushed through the fluid, the after flushing the filter surface with particle-laden fluid can be discharged to the atmosphere via the shut-off valve. 24. Control device according to claim 23, characterized net that the filter is rotatably arranged in a bolt. 25. Control device according to claim 23 or 24, characterized ge indicates that the shut-off valve is assigned to the filter in this way  net is that it is the section located downstream of the filter of the respective fluid subchannel. 26. Control device according to one of the preceding claims, characterized in that the control device is suitable Bracket elements for attaching the control device in egg ner position downstream of the screw conveyor of a plastic extruder or the melt pump and upstream of the tool, ins special of the nozzle, the plastic extruder. 27. Control device according to one of the preceding claims, characterized in that the control device has two fluid sub-channels ( 5 , 6 ), that each of the two fluid sub-channels ( 5 , 6 ) has a first channel section ( 7 ) arranged downstream of the fluid supply channel ( 10 ) , wherein the first channel section ( 7 ) is arranged at an angle α of 120 ° to 160 ° relative to the fluid supply channel ( 10 ), that a second channel section ( 8 ) adjoins this, viewed in the direction of fluid flow, the two two channel sections ( 8 ) run essentially parallel, and that seen in the direction of fluid flow, a third channel section ( 9 ) follows, which is arranged at an angle α of 120 ° to 140 ° from the second channel section ( 8 ) relative to the common fluid discharge channel ( 11 ). 28. Control device according to claim 27, characterized in that in each first channel section ( 7 ) a Ventilein direction ( 3 , 4 ) is provided. 29. Control device according to claim 27 or 28, characterized in that a filter device ( 1 , 2 ) is positioned in each second channel section ( 8 ). 30. Control device according to claim 7, 9, 10, 14 or 15, characterized in that the second and third position of the locking means ( 16 , 17 ) is an identical position.