• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An arrangement for sealing a disc filter (1), the assembly comprising at least one seal arranged between a bowl (8) for the disc filter (1) and a filtrate valve (19) for the disc filter (1), the seal comprising a resilient annular seal (10). 33, 48).
    公开号:AT13455U1
    申请号:TGM225/2012U
    申请日:2012-05-25
    公开日:2013-12-15
    发明作者:Ari Kopra
    申请人:Metso Paper Inc；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13 455U1 2013-12-15
    description
    BACKGROUND OF THE INVENTION
    The invention relates to an arrangement for sealing a disc filter, wherein the arrangement comprises at least one arranged between a basin for the disc filter and a filtrate valve for the disc filter seal.
    Disc filters are commonly used in the recovery of fibers and for cleaning in a recirculating water system of paper and board machines. The disc filters have a rotatable axis and in the longitudinal direction of the axis several successively positioned disc-shaped filter or filter discs. In the circumferential direction of the axis, the filter disks are formed by filter sectors fastened next to one another on the axle, which are separated from one another by sector-shaped filter constructions surrounded by supporting edges.
    The disk filters will have a fibrous mass, i. a pulp slurry, generally supplied in such a way that the pulp slurry is fed via a feed trough into a basin located in the lower part of the disc filter. When using the disc filter, a suction force is applied to the fiber mass suspension via filter sectors located below the surface of the fiber slurry, resulting in a screen coating forming the surface of the filter disc within the support margins the filter sectors limited areas forms a fiber layer. As a result of the same suction effect, the water contained in the pulp slurry is filtered through the fiber layer formed on the surface of the filter disk as filtrate into the interior of the filter sectors. The fiber layer mentioned here acts as a filter which removes particles from the water flowing through the relevant fiber layer. The filtrate which has reached the interior of the filter sectors is passed on to a filtrate channel located inside the axis of the disk filter, which corresponds to each filter sector, and then discharged out of the disk filter via the filtrate valve. The fiber layer formed on the surface of the filter disk, i. the precipitated pulp is removed after the filter disk has rotated to the surface of the pulp slurry in the basin.
    The filtrate which has reached the filtrate channel via the filter sector thus reaches the filtrate valve via the filtrate channel. In the filtrate valve are located in the circumferential direction of separate filtrate chambers in such a way that in each Filtratkammer the degree of purity forms a filtrate of certain quality. The filtrate valve typically has two filtrate chambers, the first filtrate chamber for a turbid filtrate and the second filtrate chamber for a clear, i.e. pure filtrate is provided. The cloudy filtrate forms at the beginning of the filtration process before a more substantial layer of fiber has precipitated on the surface of the filter sector. The pure filtrate or the filtrate, in which only very few or no solids are contained, forms thereafter, if a proper fiber layer has formed on the surface of the filter sector. Filtrate valves may also include a third filtrate chamber intended for a very clean filtrate or filtrate which is filtered at the very end of the filtration process, just before the filter sector rotates to the surface of the pulp slurry in the basin and before the fiber layer precipitated on the surface of the filter sector is removed from this surface. In the publications US 4,136,028 and 5,792,352 some disc filters are shown.
    A prerequisite for efficient operation of the disc filter is that in the basin for the disc filter to be supplied fiber mass suspension can not flow out of the basin from the connections between this and the other parts that belong to the disc filter. The pulp slurry may flow out of the pool, for example, from the connection between the pool and the filtrate valve as a result of wear of wear plates associated with the particular connection. Sealing the connection between the basin and the filtrate valve is intended to prevent these leaks in the pulp suspension. In a known sealing solution is between a 1/13 Austrian Patent Office AT13 455U1 2013-12-15
    Endplate of the basin and the filtrate valve positioned a groove which circulates the filtrate valve and is welded to the filtrate valve body over the entire distance of the circumference of the filtrate valve. In addition to the said channel, the sealing solution includes a V-ring seal arranged between the end plate of the basin and the channel and a retaining clip which holds the latter and extends over the entire circumference of the V-ring seal. The sealing assembly in question is quite complicated and time-consuming to implement from the overall construction and associated with high costs.
    BRIEF DESCRIPTION OF THE INVENTION
    The object of this invention is to obtain a novel sealing solution between a tank for a disc filter and a filtrate.
    For an arrangement according to the invention is characteristic that the seal is an elastic annular seal.
    The arrangement for sealing the disc filter thus comprises at least one arranged between the basin for the disc filter and the filtrate valve for the disc filter seal, which is an elastic annular seal. With the elastic annular seal, a connection between the bowl for the disc filter and the filtrate valve can be easily sealed in such a way that the pulp suspension can not flow out of the connection between the bowl and the filtrate valve. A gasket made of an elastic material, such as rubber, plastic or a mixture of rubber and plastic, is inherently elastic in design and changing in shape. In addition, regardless of the large construction caused by the filtrate valve and the large size of the entire disc filter, a seal made of an elastic material is an advantageous solution for sealing the connection between the bowl of the disc filter and the filtrate valve in terms of cost.
    According to one embodiment, the seal is a bellows seal. With the bellows seal the connection between the bowl for the disc filter and the filtrate valve can be sealed in a very simple way in such a way that the pulp suspension can not flow out of the connection between the basin and the filtrate valve. The bellows seal thus connects the filtrate valve and the basin as a firm and play-free connection with each other, whereby leakage flows of the pulp suspension from the connection between the basin and the filtrate valve can not be done. Without affecting the tightness of the connection, the bellows seal permits reciprocal movement between the basin and the filtrate valve both in the axial direction and in the radial direction of the disc filter, without interrupting the movements and changes in shape.
    According to one embodiment, a flange portion directed outwardly from the filtrate valve is disposed on the outer periphery of the filtrate valve in the radial direction of the disc filter, the inner periphery of the seal being fixed to the flange portion provided on the filtrate valve, and the outer periphery of the seal being fixed to the end plate of the basin , The flange portion projecting outwardly from the filtrate valve on the outer circumference of the filtrate valve forms an attachment surface on the inner circumference of the seal which runs in the same direction as the disc filter end plate, allowing the seal to be easily interposed between the disc filter bowl and the bowl can be attached to the filtrate valve.
    BRIEF DESCRIPTION OF THE FIGURES
    Some embodiments of the invention will be described in more detail in the accompanying drawings: Fig. 1 shows schematically a disc filter as seen from the end; Fig. 2 schematically shows a part of a disc filter according to Fig. 1 from the side and partially as a cross-section, and FIG. 3 schematically illustrates part of a second disc filter of FIG. 1 as seen from the side and partly as a cross-section. [0014] FIG.
    Some embodiments of the invention are shown in simplified form in the figures for the sake of clarity. Like parts are indicated in the figures with the same reference numerals.
    DETAILED DESCRIPTION OF THE INVENTION
    In Fig. 1, a disc filter 1 is seen schematically from the end and shown partially open. The disc filter 1 shown in FIG. 1 has a body construction 2 and an axle 3 supported in the body structure 2. On the axis 3 filter sectors 4 are attached. Several filter sectors 4 are attached in parallel to the axis 3 in the circumferential direction thereof, these filter sectors 4 positioned in parallel in the circumferential direction of the axis 3 forming a filter disk 5 of the disk filter 1. In the longitudinal direction of the axis 3, the disc filter 1 a plurality of filter discs 5 in a row at a distance from each other. The filter sector 4 has a support edge 6, on the inside of the limited area of this a screen coating is arranged, which forms a filter surface or a filter pad at the filter sector 4. Each filter sector 4 is connected in the circumferential direction of the axis 3 to a filtrate channel 7 which is located at the corresponding point in the interior of the axis 3 in the longitudinal direction of the axis 3. The axis 3 and the filter disks 5 arranged thereon are positioned in the manner in the basin 8 for the disk filter 1 that at least the largest part of the axis 3 and in particular the surface of the filter disks 5 remains below the surface of the fiber mass suspension located in the basin 8. The surface of the fiber mass suspension located in the basin 8 is shown schematically with a broken line 9. The fiber mass suspension to be treated is fed into the basin 8 via a feed tube 10 and a feed trough 11 in such a way that the feed trough 11 evenly distributes the fiber pulp suspension over the entire length of the basin 8.
    When using the disc filter 1 is located above the surface 9 of the fiber mass suspension filter sectors 4 and the corresponding filtrate channels 7, a suction or a suction directed to the fiber mass suspension, with the result that on the surface of the filter sectors 4 forms a fiber layer on the inside of the bounded by supporting edges 6 areas. As a result of the same suction effect, the water contained in the pulp slurry is filtered through the fiber layer formed on the surface of the filter sectors 4 as filtrate into the interior of the filter sectors 4. The fiber layer mentioned here acts as a filter which removes particles from the water flowing through the relevant fiber layer.
    The fiber layer F formed on the surface of the filter sector 4, i. the precipitated fiber mass F or the deposition material F, is removed after the filter sector 4 has rotated to the surface of the fiber mass suspension located in the basin 8. The direction of rotation of the disc filter 1 is shown schematically in Fig. 1 with an arrow A. The removal of the deposition substance F from the surface of the filter sector 4 is generally carried out in such a way that the suction pressure is switched off, whereby the deposition material can be released from the surface of the filter sector 4 solely by the action of gravity. In general, however, the dissolution of the deposition material is made more effective with water jets directed at them, which are generated in FIG. 1 by nozzles 13 arranged on the cover 12 of the disk filter 1. The dissolution of the deposition material can also be made more effective via the filtrate channel 7 corresponding to each filter sector 4 by a pressure in the interior of the filter sector 4 which is higher than the outside air pressure. The deposition material released from the filter disk 5 falls on the chamfers 15 located between the filter disks 5, i. into the discharge channels 15 for the deposition material of the disc filter 1, from which the deposition material passes to a screw conveyor 16 located below the bevels 15 or something similar which removes this precipitated mass from the disc filter 1 for further treatment. In Fig. 1, a nozzle 17 is still shown; by means of the water jets 18 produced by this, the surface of the filter disk 5 can still be cleaned before it rotates again below the fiber mass suspension located in the basin for the filter disk 5 AT13 455U1 2013-12-15.
    In Fig. 1, in addition, a partially arranged at the end of the axis 3 filtrate valve 19 is shown, which receives the filtrate filtered between the filter sectors 4 and on the surface thereof through the filtrate corresponding to each filter sector 4 filtrate channel 7. In the filtrate valve 19 are located in the circumferential direction of each other separate filtrate chambers from which enters a filtrate of certain quality in each filtrate from the purity ago. The internal construction of the filtrate valve 19 is shown in more detail in FIG.
    The filtrate valve 19 of FIG. 1 has three filtrate chambers, which can be deduced from the fact that the filtrate valve of FIG. 1 has three Ableitblöcke, i. the first discharge block 20 and a first discharge channel 20c corresponding thereto are provided for a turbid filtrate, the second discharge block 21 and a second discharge channel 21c corresponding thereto are intended for a pure filtrate and the third Ableitblock 22 and a corresponding thereto the third discharge channel 22c are provided for a very pure filtrate. Depending on the various embodiments of the disc filter 1, the disc filter may comprise either only at one end of the axle 3 or at both ends of the axle 3, a filtrate valve.
    2, a disc filter 1 according to FIG. 1 is schematically seen from the side and shown as a cross section. From the disc filter 1, a part of the axis 3, of the body structure 3c and the filtrate channel 7 in the axis 3 are shown in Fig. 2. FIG. 2 also shows a sector sleeve 23 connected to the filtrate channel 7, in connection with which the filter sector 4 for fastening the filter sector 4 to the axis 3 is fastened. Furthermore, the filtrate valve 19 is shown in FIG. 2, which has a body construction 19c and in the circumferential direction of the filtrate valve 19 by a partition wall separate filtrate chambers 24, with which the in the axis 3 located filtrate channels 7 are in flow communication. The filtrates obtained from defined filtrate channels 7 into a specific filtrate chamber 24 are removed via a discharge block, which is identified by way of example as first discharge block 20 in FIG. 2.
    In Fig. 2 is still a befindlicher at the end of the axis 3, on the outside of the basin 8 for the disc filter 1 protruding and the filtrate 19 penetrating axle journal 25, with the axis 3 for the disc filter 1 in a support structure 26th is stored, which may be, for example, a part of the body structure 2 for the disc filter 1 or a separate bearing block or a corresponding construction. The bearing located in the support structure 26 is identified by the reference numeral 27. In Fig. 2, a bearing between the filtrate valve 19 and the journal 25 is shown, which was realized in Fig. 2 with plain bearings 28, i. the filtrate valve 19 is supported by means of the slide bearings 28 on the outer circumference of the axle journal 25. The journal 25 thus forms a common bearing surface for both the axis 3 and the filtrate valve 19, with the result that the axis 3 and the filtrate valve 19 are concentric.
    In an embodiment according to FIG. 2, the bearing of the axle 3 for the disc filter 1 is therefore arranged with the aid of the axle journal 25 and the associated bearing 27, but the bearing of the axle 3 for the disc filter 1 can also be used, for example, as a slide bearing be realized, which is to be arranged at the ends of the basin 8 for the disc filter 1.
    Further, in Fig. 2, in the longitudinal direction of the axis 3 between the axis 3 and a first end 19a of the filtrate valve 19, i. the directed against the basin 8 for the disc filter 1 end 19a of the filtrate valve 19, arranged wear plates 30 and 31 are shown, which are intended to reduce the from the axis 3 and the filtrate valve 19 against each other directed wear during operation of the disc filter 1. The first wear plate 30 is positioned in the direction of the axis 3 for the disc filter 1 between the axis 3 and the filtrate valve 19. The first wear plate 30 in radial R direction of the 4/13 Austrian Patent Office AT 13 455 Ul 2013-12-15
    Disc filter 1 is positioned between the filtrate channel 7 in the axis 3 and a first flange portion 29 on the axis 3, which extends in the direction of located on the inner circumference 3d of the axis 3 in the body structure 3c for the axis 3 axis 3, and the first flange portion 29th on the axle 3 is supported on the axle journal 25. The second wear plate 31 is in turn positioned between the axis 3 and the filtrate valve 19 at its outer periphery, supported in the direction of the axis 3 of an outer periphery 3e of the axis 3 in the radial direction of the disc filter 1 located second flange portion 32 on the axis 3 and one on the outer periphery 19d of the filtrate valve 19 in the radial direction of the disc filter 1 from the filtrate valve 19 outwardly directed outer periphery 19e of the filtrate 19 located second flange portion 34. In the radial direction of the disc filter 1, the wear plate 31 is based on the second flange portion 35, located on the outer periphery 19e of the filtrate valve 19 is in the direction of the axis 3 on the outer periphery 19 e of the filtrate 19, wherein the flange portion 35 is directed toward the axis 3, extending into the interior of the bowl 8 for the disc filter 1 and in the radial direction of the disc filter 1 on the outer side of the outer periphery of the axis 3 position rt is. In the radial direction of the disc filter 1, the wear plates 30 and 31 with the axis 3 and the filtrate valve 19 are concentric.
    The wear plates 30 and 31 are attached, for example, with a screw on the filtrate valve. Between the wear plates 30 and 31 are also directed in the radial direction of the disc filter wear plates 46 and 47, which are shown schematically in Figure 2 with a broken line. the wear plates 46 and 47 are arranged in arbitrary positions at the circumferential angle. With the positioning of the wear plates 46 and 47 it is determined in which filtrate chamber of the filtrate the filtrate flowing from the filtrate channel is passed or in which filtrate channel or filtrate which is controlled via the filtrate in the filtrate channels under or overpressure. The wear plates 46 and 47 may be thinner in thickness than the wear plates 30 and 31 and may be formed in the thickness direction of a plurality of wear plates to form desired fluid communication between the filtrate chambers of the filtrate valve and the filtrate channels in the axis. The wear plates 46 and 47 may also be thinned in thickness, in particular on the side of the axis 3. The wear plates 46 and 47 are fastened to the wear plates 30 and 31, for example by screw connections.
    In the embodiment of Fig. 2, the flange portion 35 is arranged to start at the end of the first flange portion 34 facing away from the disc filter 1 in the radial direction of the disc filter 1, but it could also be arranged to be from any other Section of the first flange portion 34 to begin.
    In the embodiment of Fig. 2, the sealing of the connection between the filtrate valve 19 for the disc filter 1 and the basin 8 for the disc filter 1 with a between the basin 8 for the disc filter 1 and in particular between the end plate 36 of the basin. 8 and the filtrate valve 19 fixed annular bellows seal 33 which is arranged to rotate around the entire outer periphery 19 e of the filtrate 19. In the embodiment of Fig. 2, the bellows seal 33 comprises a bellows 33c, but of course may also include a plurality of bellows 33c. The bellows seal 33 is made of an elastic material such as rubber, plastic or a mixture of rubber and plastic in such a manner that the construction of the bellows seal 33 is elastic or its shape changing. In the embodiment of FIG. 2, the outer periphery 33d of the bellows seal 33 is fixed to the end plate 36 of the bowl 8 for the disc filter 1 and the inner periphery 33e of the bellows seal 33 to the first flange portion 34 on the outer periphery 19e of the filtrate valve 19. The bellows seal 33 is fastened with mechanical fastening means both to the basin 8 and to the filtrate valve 19, such as with bolts 37 which are to be arranged through the edges of the outer and inner circumference of the bellows seal 33 therethrough. The bellows seal 33 can also be attached, for example, to the basin 8 and the filtrate valve 19 by glueing.
    With the bellows seal 33, the connection between the tank 8 for the disc filter 1 and the filtrate valve 19 can be sealed in a very simple manner in such a way that the 5/13 Austrian Patent Office AT 13 455 Ul 2013-12-15
    Fiber mass suspension can not flow from the connection between the basin 8 and the filtrate valve 19 to the outside of the basin 8. The bellows seal 33 thus connects the filtrate valve 19 and the basin 8 as a solid and play-free connection with each other, whereby leakage flows of the fiber mass suspension from the connection between the basin 8 and the filtrate valve 19 can not take place. Without affecting the tightness of the connection allows the bellows seal 33 both in the direction of the axis 3 of the disc filter 1 and in the radial direction mutual movements and changes in shape between the basin 8 and the filtrate valve 19, which in the disc filter easily as a result of very long construction, which can occur from the axis of the disc filter, which are formed at both ends of the axle and the axle to be fastened to these parts. The bellows seal also allows very large movements and even a back and forth lurching movement of the axis 3, without the tightness is impaired. In addition, the bellows seal is maintenance-free.
    For sealing the connection between the filtrate valve 19 and the axis 3, a seal 38 is arranged on the outer circumference between the second flange portion 35 on the outer periphery of the filtrate valve 19 and the flange 3 at the outer periphery 3e of the axis 3 for the disc filter 1, a seal 38 is arranged in the embodiment shown in Fig. 2 is an O-ring seal. The seal between the filtrate valve 19 and the axis 3 prevents leakage of the located in the basin 8 fiber mass suspension between the axis 3 and the filtrate valve 19 in the filtrate channels 7 and the filtrate in the filtrate valve 19. The seal in question thus prevents mixing in the basin 8 yet unfiltered fiber mass suspension in the filtrate valve 19 reaching already filtered filtrate. In the embodiment illustrated in FIG. 2, the seal between the shaft 3 and the filtrate valve 19 provided with the seal 38 also assures the sealing action of the wear plate 31, thereby not necessarily damaging the seal 38 between the filtrate valve 19 and the axle 3 a leakage flow between the axis 3 and the filtrate valve 19 leads. The life of the seal between the filtrate valve 19 and the axis 3 is prolonged by the aforementioned concentricity of the axis 3, the filtrate valve 19 and the wear plate 31, whereby the radial position of the wear plate 31 is not changed, maintaining the tightness between the parts and thus promote the obtaining of filtrates from the disc filter 1 as separate, non-mixed streams.
    In the embodiment of Fig. 2 is located between the flange portion 35 on the filtrate valve 19 and the flange portion 32 on the axis 3, only a seal 38. However, it can be arranged 38 more seals in the manner that more than one seal 38th mounted in series, for example two or three seals. Should at least two seals 38 be present, the durability of the seal assembly or series can be monitored by arranging a pressure measurement in which the pressure of the space between the seals is measured.
    In the embodiment of Fig. 2 is still a seal 39 between the wear plate 30 and located on the inner circumference of the axis 3 d 3 flange portion 29 is disposed in the example shown in Fig. 2, an O-ring seal. With the relevant seal, the tightness of the connection between the axis 3 and the filtrate valve 19 can be ensured on the inner circumference and a leakage flow of the filtrate or the pulp suspension from the disc filter 1 or the passage to the inner periphery 19d on the filtrate valve 19 on the bearing surface between the journal 25 and the filtrate valve 19 can be prevented. Since the wear plate 30 connected to the seal is concentric with the axis 3 and the filtrate valve 19, this seal also remains tight for a long time due to the concentricity of the parts.
    In the embodiment of Fig. 3, the sealing of the connection between the filtrate valve 19 for the disc filter 1 and the basin 8 for the disc filter 1 with a between the tank 8 for the disc filter 1 and in particular between the end plate 36 of the basin. 8 and the filtrate valve 19 fixed annular disc seal 48 which is arranged to rotate around the entire outer periphery 19 e of the filtrate 19. 6/13 Austrian Patent Office AT 13 455 Ul 2013-12-15
    The disc seal 48 is made of an elastic material, such as rubber, plastic or a mixture of rubber and plastic, in such a way that the construction of the disc seal 48 easily yields or changes its shape. In the embodiment of FIG. 3, the outer periphery of the disc seal 48 is fixed to the end plate 36 of the bowl 8 for the disc filter 1 and the inner periphery of the disc seal 48 to the first flange portion 34 on the outer periphery 19 e of the filtrate valve 19. The disc seal 48 is secured by mechanical fasteners to both the bowl 8 and the filtrate valve 19, such as with bolts 37 to be disposed through the edges of the outer and inner periphery of the disc seal 48. The disc seal 48 may also be attached to the basin 8 and the filtrate valve 19, for example, by gluing.
    Even with the disc seal 48, the connection between the tank 8 for the disc filter 1 and the filtrate valve 19 can be sealed in a very simple manner in such a way that the fiber mass suspension is not from the connection between the basin 8 and the filtrate valve 19 on the Outside of the basin 8 can flow. The disc seal 48 thus connects the filtrate valve 19 and the basin 8 as a solid and play-free connection with each other, whereby leakage flows of the fiber mass suspension from the connection between the basin 8 and the filtrate valve 19 can not be done. If a disc seal 48 is used to seal the connection between the bowl 8 for the disc filter 1 and the filtrate valve 19, the connections between the axis 3 and the filtrate valve 19 can be sealed at its inner and outer circumference, as in connection with FIG is shown.
    In a comparison of the bellows seal and the disc seal with each other can be found that the allowed by the bellows seal elasticity in the radial and circumferential direction of the axis is greater than the corresponding elasticity margins of the disc seal. Often it is advantageous to choose as a gasket a bellows seal, which allows large elasticity margins, and to arrange as a separate support a support in the radial and circumferential direction of the filtrate, since the bellows seal allows larger mutual movements of the parts of the disc filter as the disc seal. On the other hand, due to radial and circumferential loads, the disc seal yields less than the bellows seal, which reduces the need for placing a support in the radial or circumferential direction of the filtrate valve when using a disc seal. Also, a rotational resistance of the disk seal can be increased relatively easily by arranging cords or other reinforcements made of metal or fiber material at an angle between the inner circumference and the outer circumference of the disk seal in the disk seal. Since in the disk seal the elasticity in the axial direction is relatively small, when using the disk seal or in particular a face plate seal the wear margin of the wear plates can be arranged smaller than when using the bellows seal.
    Thus, in the chambers in the filtrate valve can expressly flow the angular positions of the filtrate valve and the wear plates corresponding filtrate, the filtrate valve and the wear plates attached thereto are pressed against the axis. By pushing the filtrate valve against the axis, a normal force is formed between the axis and the wear plate multiplied by a coefficient of friction between the wear plate and the axis to provide a circumferential force whereby twisting of the filtrate valve with a support arranged in the circumferential direction of the filtrate valve can be prevented , The force is often quite large, which is to be considered in the arrangement of the support in the circumferential direction of the filtrate valve. Some possible embodiments for support in the radial and / or circumferential direction of the filtrate valve are shown below.
    For controlling or positioning or supporting in the radial direction R and / or circumferential direction of the filtrate valve 19 for the disc filter 1 with respect to the axis 3, only one bellows seal 33 may be sufficient, i. E. in connection with the filtrate valve 19, it is not always essential to arrange another organ which controls the filtrate valve 19 in the radial and / or circumferential direction of the disc filter 1. For controlling or positioning or supporting the filtrate valve 19 in the radial and / or circumferential direction of the disc filter 1 with respect to the axis 3, however, for example, a closure connection 40 according to the in 2, which is arranged in connection with a second end 19b of the axis 3 facing away filtrate valve 19. The respective closure connection 40 includes a closure member 41 formed on the support structure 26 and a closure rod 42 movably attached thereto in the direction of the axis 3, which in turn is disposed in a closure cavity 44 and a closure member 41, respectively, which is at the other end 19b of the filtrate valve 19 located closure member 43 is located. At least three corresponding closure connections 40 are preferably positioned symmetrically in the circumferential direction of the filtrate valve 19 between the other end 19b of the filtrate valve 19 and the support structure 26, thereby easily providing a uniform axial line load directed from the filtrate valve to the wear plate. In this connection, the closure rods 42 and closure elements 43 belonging to these closure connections 40 together prevent movement of the filtrate valve 19 in the radial direction R and / or circumferential direction of the disk filter 1, but permit movement of the closure rods 42 with respect to the closure members 41 in the direction of the axis 3 Closures may be positioned in place of the end 19b of the filtrate valve 19 in conjunction with the outer periphery of the filtrate valve 19.
    Although the above-mentioned, directed to the filtrate circumferential force is quite large, a corresponding support force can be arranged only for a fixed point for this. A fixed point can be sufficient, in particular, if the support is arranged as a support in the tangential direction of the circumference of the filtrate valve and the support is positioned with the largest possible diameter on the filtrate valve, for example on its outer circumference. A force loading the fixed point in the tangential direction can be the lower, the larger the circumference for the arrangement of the fixed point.
    If the bearing for the axis 3 was not realized on the support structure 26 and the bearing 27, but with a sliding bearing at the ends of the basin 8, a corresponding closure connection in connection 35 with the other end 19b of the filtrate valve 19 at the Center be realized.
    If the position of the filtrate valve 19 with respect to the axis 3 in the radial and / or circumferential direction of the disc filter 1 remains as stable as possible, the directed to the bellows seal 33 force effects reduce in the radial direction of the disc filter 1 and the life of the bellows seal 33 increases yourself. Likewise, with a reduction of the loads in the radial direction of the disc filter 1, the service life of the sealing effect brought about by the wear plates 30, 31 also increases.
    The control or positioning or support of the filtrate valve 19 in the direction of the axis 3 with respect to the axis 3, for example, according to the illustrated in Fig. 2 by placing a load between the other end 19 b of the filtrate valve 19 and the support structure 26 in Direction of the axis 3, for example, with a arranged between the other end 19b of the filtrate valve 19 and the support structure 26 spring 45 or with any other, the same effect reaching loading member can be realized, which can be preferably arranged at least at three locations on the Umfangmaß. The spring 45 presses the filtrate valve 19 against the axis 3, whereby a compressive load or stress forms against the located between the filtrate valve 19 and the axis 3 wear plates 30, 31, 46, 47, resulting in wear of the wear plates 30, 31, 46, 47, the filtrate valve 19 is offset from the axis 3. This effectively seals the seal between the axle 3 and the filtrate valve 19, further preventing mixing of the filtrate flows moving in the filtrate passage 7 in the axle 3 with each other in the connection between the axle 3 and the filtrate valve 19. The movement of the filtrate valve 19 in the direction of the axis 3 is also possible with the use of the closure connection 40, since the closure rod 42 can move in the closure member 41 in the direction of the axis 3. There may be a plurality of closure members on the circumferential dimension of the support structure 26, whereby the position of the filtrate valve can be locked when mounting at a suitable circumferential angle to form desired filtrates. The position of the filtrate valve in the circumferential direction can be adjusted by releasing the bellows seal fixture from the basin 8 or filtrate valve 19 by opening the closure joint 40, rotating the filtrate valve to a new position, and securing the open fixture of the bellows seal and fastener connection.
    Although the supports for the filtrate valve shown above are illustrated in the examples in connection with the operation of the bellows seal, the supports described above can be used if necessary, even if the seal between the bowl of the disc filter and the filtrate valve with a disc seal is realized. In some cases, the characteristics presented in this application can be used as such regardless of other characteristics. On the other hand, the characteristics presented in this application can be combined to different combinations as needed.
    The drawings and the related explanations are only intended to illustrate the idea of the invention. From its details, the invention may vary within the scope of the claims. 9/13
    权利要求:
    Claims (11)
    [1]
    Austrian Patent Office AT13 455U1 2013-12-15 Claims 1. Arrangement for sealing a disc filter (1), the arrangement comprising at least one between a reservoir (8) for the disc filter (1) and a filtrate valve (19) for the disc filter (1). arranged seal, characterized in that the seal is a resilient annular seal (33, 48).
    [2]
    2. Arrangement according to claim 1, characterized in that the seal (33, 48) between an end plate (36) of the basin (8) for the disc filter (1) and an outer periphery (19e) of the filtrate valve (19) is arranged.
    [3]
    3. Arrangement according to claim 1 or 2, characterized in that on the outer circumference (19e) of the filtrate valve (19) in the radial direction (R) of the disc filter (1) from the filtrate valve (19) outwardly directed first flange portion (34) of the outer circumference ( 19e) of the filtrate valve (19) is arranged, and that the inner circumference of the seal (33, 48) on said first flange portion (34) on the outer periphery (19e) of the filtrate valve (19) is fixed, and that the outer periphery of the seal (33, 48) is attached to the end plate (36) of the bowl (8) for the disc filter (1).
    [4]
    4. Arrangement according to claim 1, characterized in that the seal (33, 48) made of rubber, plastic or a mixture of rubber and plastic.
    [5]
    5. Arrangement according to one of claims 1 to 4, characterized in that the seal (33, 48) with bolts (37) or glueing both in the basin (8) for the disc filter (1) and in the filtrate valve (19) is attached ,
    [6]
    6. Arrangement according to one of claims 1 to 5, characterized in that the seal is a bellows seal (33) or a disk seal (48).
    [7]
    7. Arrangement according to one of claims 1 to 6, characterized in that between the axis (3) of the disc filter (1) and the filtrate valve (19) at least one seal (38, 39) for sealing the connection between the filtrate valve (19) and the axis (3) is present.
    [8]
    8. Arrangement according to claim 7, characterized in that at the end (19 a) of the basin (8) of the disc filter (1) directed towards the filtrate valve (19) on its outer periphery (19 e) of the filtrate valve (19) directed away in the direction of Axis (3) of the disc filter (1) second flange portion (35) on the outer periphery (19e) of the filtrate valve (19) is arranged, which extends into the basin (8) for the disc filter (1) on the outer side on the outer circumference (3e) the axis (3) extends, and that between said second flange portion (35) on the outer periphery (19e) of the filtrate valve (19) and the outer periphery (3e) of the axis (3) at least one seal (38) for sealing off the connection between the outer periphery (19e) on the filtrate valve (19) and the outer periphery (3e) on the axis (3) is arranged. 10/13 Austrian Patent Office AT 13 455 Ul 2013-12-15
    [9]
    9. Arrangement according to one of claims 1 to 8, characterized in that the disc filter (1) at the end of the axis (3) for the disc filter (1) arranged axle journal (25), supported against the outer periphery of the filtrate valve (19) is mounted, and that between the axis (3) of the disc filter (1) and the filtrate valve (19) a supported wear plate (30) on a on the inner circumference (3d) of the axis (3) located flange construction (29) is arranged, wherein between at least one seal (39) for sealing the connection between the inner circumference (3d) of the axle (3) and the inner circumference (19d) of the wear plate (30) and the flange construction (29) located on the inner circumference (3d) of the axle (3) Filtrate valve (19) is arranged.
    [10]
    10. Arrangement according to one of claims 1 to 9, characterized in that the arrangement further comprises at least one in connection with the filtrate valve (19) formed closure connection (40) for supporting the filtrate valve (19) in the radial direction (R) and / or circumferential direction of the disc filter (1) belongs.
    [11]
    11. Arrangement according to one of claims 1 to 10, characterized in that the arrangement further includes at least one spring (45) for pressing the filtrate valve (19) against the axis (3). For this 2 sheets drawings 11/13
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    同族专利:
    公开号 | 公开日
    FI9810U1|2012-09-24|
    DE202012005724U1|2012-07-31|
    FIU20114070U0|2011-06-22|
    CN203075734U|2013-07-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4136028A|1976-09-13|1979-01-23|Rauma-Rapola Oy|Method for filtering a fibrous material by means of a disc filter as well as a disc filter for performing the method|
    DE3629374A1|1985-08-20|1988-03-03|Schenk Filterbau Gmbh|Disc filter|
    AT401355B|1994-09-08|1996-08-26|Andritz Patentverwaltung|DISC FILTERS FOR SEPARATING LIQUIDS FROM A SUSPENSION, IN PARTICULAR FIBER FIBER SUSPENSION|DE102012218511A1|2012-10-11|2014-04-17|Voith Patent Gmbh|disc filter|
    CN104358176B|2014-10-31|2016-10-05|东莞理文造纸厂有限公司|A kind of mthod of white water from paper making recovery system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20114070U|FI9810U1|2011-06-22|2011-06-22|Sealing of filtrate valve in disc filter|
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