• 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:
    The invention relates to a dewatering device (1) for dewatering a pumpable pulp suspension (S), wherein the pulp suspension (S) comprises pulp fibers and process water, and the dewatering device (1) is a ram device by means of which a ram (122) can be guided through a filter basket within a housing , is to be improved so that a filter cake with a pulp content of more than 50% results. For this purpose, the filter basket as a multi-walled filter basket comprising an outer filter basket (132) and an inner filter basket (133) is formed, wherein the filter baskets (132, 133) concentrically to each other an intermediate pressing space (130) are arranged forming and the outer wall (132) and the inner wall (133) is in each case formed from a perforated plate with a plurality of through holes, so that the pressing punch (122), which is designed as an annular punch (122), can be guided linearly parallel to the longitudinal axis by means of the press punch device through the pressing space (130).
    公开号:CH711511A2
    申请号:CH01312/15
    申请日:2015-09-10
    公开日:2017-03-15
    发明作者:Jörg Huber Hans；Jörg Huber Michael
    申请人:Dissolvetech Ag；
    IPC主号:
    专利说明:

    Technical area
    The present invention describes a dewatering apparatus for dewatering a pumpable pulp suspension, wherein the pulp suspension pulp fibers and process water comprises, to achieve a filter cake having a pulp content of at least 30% pulp fibers after the pressing process, comprising a ram device, by means of which a ram formed as an annular die by a multi-walled filter basket within a housing between an outer filter basket and an inner filter basket is feasible, wherein the outer wall and the inner wall is formed in each case of a perforated plate having a plurality of through holes, and a collecting and Auflösefahrzeug, comprising a dissolving device in which pulp can be dissolved by means of process water and a pulp suspension can be generated.
    State of the art
    As disclosed in the applicant's PCT / EP 2014 052 329, the applicant has introduced a method for the mobile destruction of secret media from pulp, in particular paper. For this purpose, it is imperative to create a compact dissolving device with a dissolver and at least one dewatering device, by means of which the secret data carriers can be made illegible after collection in a process designed to be secure from the outside at the point of origin. In a special version, a mobile entrainment device is used on a collection and dissolution vehicle, so that a mobile data destruction can be performed. The dissolution of the data carrier can begin directly at the point of origin after being introduced into the dissolver on the collection and dissolving vehicle, and unreadable data carriers can thus be transported to a disposal / recycling point, for example a paper factory. It thus takes place a mobile treatment of the disk shortly after the loading and before the removal from the collection point to the disposal point instead. Accordingly, the properties of the dissolver and the at least one dewatering apparatus are to be adapted to small spaces and as little weight as possible.
    [0003] According to WO 2014 131 593 and WO 2014 131 595 of the applicant, a pulp suspension of process water with small amounts of pulp in the range from 3% to at most 18% is formed in the dissolver. These pulp suspensions must be dewatered for further processing.
    Commercially available dissolvers provide efficient dissolution of fibrous materials, with various systems available. In most cases, several dissolving and deinking stages are connected in series in order to improve the purity of the pulp suspension or to carry out additional purification steps.
    After the pulp suspension has been produced by defibration of the pulp and cleaning the pulp suspension of impurities in at least one resolver, it is passed through a dewatering device. In the dewatering device, a filter cake is produced by separation of process water from the pulp suspension, which can then be fed to further processing. The entire dissolving device comprises the at least one dissolving step and at least one dewatering device.
    In the study of the state of the art in the field of dewatering devices it became clear that so far the goal to achieve a pulp content of significantly more than 30% in the pressed filter cake, if at all could be achieved only by technically high costs, for example by several Drainage devices in series switches.
    For example, in the mobile data destruction method of the Applicant but a dry as possible disposable filter cake using a compact, lightweight and resource-saving system is desired so that on the one hand as much process water can be recycled and the achieved filter cake almost dry, with a fiber content of 50 % and more, can be stored. In addition, even as fast as possible dewatering is sought in order to remove the largest possible amount of fibrous material in a very short time from the dissolver and then dewater in the dewatering device.
    The known drainage devices are technically very demanding, prone to blockages and are not suitable due to size, weight and energy requirements for a mobile entrainment. When building his collection and Auflösefahrzeuge the applicant has not been able to resort to commercially available dissolvers nor to drainage devices, since the dewatering of the pulp suspension was not possible with the desired efficiency and drainage in a confined space was not possible due to the voluminous or heavy design.
    Even if, in a neighboring technical field of chemical engineering, devices with filters, for example with filter elements stationary during filtration, e.g. Pressure or suction filters, looking, you do not come to a novel drainage device.
    When searching for a multi-part filter basket with knowledge of the present invention, one can find the filter apparatus of DE 852 243. This describes two cylindrical sheaths, which enclose an annular chamber. An annular piston or plunger is moved through the annular chamber, which annular plunger serves to push off a precipitate. In several places of the annular chamber screen surfaces are arranged perforated metal sheets through which a liquid can pass. The figures of DE 852 243 roughly resemble the filter baskets of the present invention. With the filtration apparatus of DE 852 243, the filtration or deposition of a solid from preferably oil-based solutions, for example naphthalene from coal tar, is possible. Coal tar is known to have a high viscosity, which makes processing difficult. Such a viscous and insoluble in water liquid is not comparable to a pulp suspension and accordingly a use for dewatering is not possible.
    A specialist who deals with the dewatering of pulp suspensions from a pulper would not have known DE 852 243 and would not have resorted to it. Even if the person skilled in the art had found DE 852 243, he would not have found the solution according to the invention since the apparatus would still have to be massively rebuilt so that a pulp suspension would even be fillable and dewaterable.
    Presentation of the invention
    The present invention has for its object to provide a dewatering device which easily achieved by dewatering a pumpable pulp suspension a filter cake with a pulp content of more than 40%.
    In addition to a high dewatering efficiency, preferably resulting in a filter cake with a pulp content of more than 40%, the drainage is achieved as quickly as possible.
    The presented here dewatering device has a compact structure and can be part of a small resolving device, which is mobile carried placeable, for example on a collection and Auflösefahrzeug or directly at the place of a collection point of waste paper, for example, in premises of a company can be set up.
    The inventive dewatering device comprises only a few components, a multi-walled filter basket, a special ring punch, which in particular is hydraulically driven and a closure device of the pressing chamber with a slider device.
    The present invention achieves highly efficient dewatering of a pulp suspension with pulp of pulp fibers, whereby process water and pulp fibers are separated by passing the ring punch through the multi-wall filter basket comprising an inner filter basket and an outer filter basket. The filter baskets each consist of perforated plates with a coverage of the filter basket surfaces of about 50% with filter holes.
    Brief description of the drawings
    Features, details and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention and the drawings.<Tb> FIG. 1a <SEP> shows a perspective view of a dewatering device while<Tb> FIG. 1b shows a longitudinal section through the dewatering device according to FIG. 1a in the direction of the longitudinal axis with the filling and removal section omitted, the pressure ram device being in maximum deflection and the slider device in the filling position.<Tb> FIG. FIG. 1c shows a perspective view of a dewatering apparatus with feed section, wherein the position of the pusher device releases the press chamber during. FIG<Tb> FIG. 1d <SEP> is a perspective view of the feed section according to FIG. 1c in the press position and<Tb> FIG. 1e <SEP> in filling position.<Tb> FIG. 2a <SEP> shows a perspective view of the multi-walled filter basket while<Tb> FIG. 2b shows a perspective view of a ram with a ring punch.<Tb> FIG. 3a shows a perspective longitudinal section through the dewatering device during a filling stroke during<Tb> FIG. 3b shows the dewatering device after filling and the displacement of the slide device in a press position, wherein the filling device is not completely shown in Figs. 3a and 3b for clarity.<Tb> FIG. 4 <SEP> shows the placement of multiple dewatering devices on a truck for mobile dewatering of a pulp suspension.
    description
    The compact dewatering device 1 according to the invention runs along a longitudinal axis L from a feed section Z to an outlet section A and has a substantially cylindrical construction. The dewatering device 1 has a housing 10, which consists of a stabilizing press frame 100, which at least partially a splash guard wall 101 or more splash guard walls 101 is covered. The dewatering device 1 is mounted in a vertical orientation by means of housing 10 in one place. Subsequently to the housing 10 in the direction of the longitudinal axis L, a drip pan 102 is indicated, in which filtered process water can be collected during operation. Lines from the sump 102 by means of which the process water can be pumped out and reused, are not shown in the figures. The necessary pumping devices for the supply or discharge of process water and pulp suspension are not shown here.
    On the, the collecting trough 102 opposite side of the dewatering device 1, the housing 10 is completed by a closure device 11. The closure device 11 has a fixed to the housing 10 frame 110, on which a slider device 111 is arranged to be linearly movable. The frame 110 includes strong backstops and arches or trusses. The locally fixed frame 110 is sufficiently rigid to allow the slider device 111 to reciprocate linearly. A drive M of the slider device 111 is indicated attached to the frame 110 and provides for a controlled linear movement between different slide positions. This is indicated by the marking of the long cylinder. In addition, the drive M can also be used to control the filling, which is indicated by the marking of the short cylinder. Such a drive M can be formed in practice by a hydraulic drive.
    The slider device 111 is targeted by means of drive M and a controller in different positions relative to the frame 110 and thus relative to the housing 10 can be brought. On the frame 110, a fixed Befüllzuleitung 1101 is attached. The slider device 111 comprises a movable filling and removal section E with a filling device and a filling opening 1111 and a mitbewegbaren counterpressure section G.
    The filling and removal section E is designed here with a partially rounded cap for receiving a filter cake, so that the ejected in the dewatering filter cake is wegschiebbar.
    Outstanding from the housing 10 in the direction of collecting trough 102 is a press-stamp device 12 can be seen. Stamp holding means or punch guide means 120 here in the form of guide rods and a closure plate allow the linear pressing movement in the direction of the longitudinal axis L of a press ram not shown here in different positions. Since a hydraulic drive is used, at least one hydraulic piston 123 is disposed on the ram 12.
    As can be seen in Fig. 1b, a multi-wall filter basket 13 is disposed in the interior of the housing 10 and secured to the press frame 100. The filter basket 13 defines a pressing space 130 and an inner space 131.
    In the interior 131, a hydraulic cylinder 121 is provided as part of the ram 12. So that extruded process water can easily escape from the inner filter basket 133 (133 missing in FIG. 1b) in the direction of the longitudinal axis L, the diameter of the hydraulic cylinder 121 is made smaller than the diameter of the inner space 131. The inner space 131 is poorly visible in FIG. because he is relatively narrow. By means of a hydraulic pump, not shown, by means of the operative connection of the hydraulic piston 123 and the hydraulic cylinder 121, the punch holding means 120 together with the punch 122 can be moved linearly in the direction of the closure device 11 as indicated by the dashed arrow and moved back again. During the movement of the press ram 122, the latter is guided through the pressing space 130, wherein the pressing out of a previously introduced pulp suspension in the pressing space 130 can be carried out. The hydraulic actuation of the ram 122 is procedurally the most efficient method. But there are also other known methods to achieve the linear extrusion movement of the ram 122, which can be used alternatively.
    In the position of the slider device 111 according to FIG. 1c, the filling and removal section E gives access to the pressing space 130, which is another maximum position, and the filter cake (not shown) can be pushed out of the pressing space 130 by means of a pressing die 122 upwards become. Subsequently, the slider device 111 is moved linearly in the arrow direction, wherein the rounded cap 1114 leads away the filter cake linearly in the arrow direction until it is collected in a collecting container. By means of the rails 1112, the sections E, G are linearly movable relative to the housing 10. A stop 1113 limits the maximum deflection of the slider device 111 in one direction.
    In Fig. 1d, this maximum deflection is shown, wherein the stop 1113 abuts against a device on the fixed frame 110. In practice, a sensor is attached here, with which you can read the maximum deflection.
    The counterpressure section G has a plate 1115 which is connected to a counterpressure punch, which is not shown in detail here. The counter punch is designed in the best case also in the form of a ring punch. When the slider device 111 has moved into the pressing position, as shown in FIG. 1d, and the counterpressure section G covers the pressing space 130, the counterpressure punch can be covered by the at least one hydraulic cylinder 1116 and / or partially retracted into the pressing space 130. The positioning of the stop 1113 ensures that the counter punch is in the exact correct position for the pressing process. The counter-pressure piston accordingly carries out a movement in the direction of the pressing space 130 and presses against the mass pressed upwards by the pressing ram 122 during operation. Tests have shown that four hydraulic cylinders 1116 give good results. Since extremely large forces occur in the drainage, the counterpressure plunger or the plate 1115 is designed so that the plate 1115 is clamped against a portion K on the frame 110. This prevents the plate 1115 and thus the counterpressure plunger from performing undesirable movement under pressure during the dewatering process. The frame 110 thus serves partly as a counter surface. The support strips absorb forces from the counterpressure stamp and lead them away. The arches or trusses of the frame 110 serve only to hold the filling slide.
    The filling and removal section E has a filling device with a filling opening 1111, wherein the filling device by means of slide device 111 can be arranged relative to the frame 110 so that pulp suspension easily and quickly from the Befüllzuleitung 1101 through the filling opening 1111 in the pressing space 130th can be introduced. The corresponding pusher position for filling is shown in Fig. 1e. The slider device 111 is moved to fill the pressing space 130 such that the filling and removal portion E, is located above the opening of the pressing space 130. Subsequently, the pulp suspension is introduced through the filling inlet 1101 and the filling in the press room 130.
    In detail, the multi-walled design of the filter basket 13 is shown in Fig. 2a. The multi-walled filter basket 13 here comprises an outer filter basket 132 and an inner filter basket 133, which are configured in the form of hollow cylinders with different diameters and are arranged concentrically with one another. Between the two filter baskets 132, 133 of the pressing space is recessed, through which the pressing die 122 is feasible. Here, a filter basket lid 134 closes off the interior 131 of the inner filter basket 133 in the direction of the closure device 11 so that no fibrous suspension can enter the interior 131 directly when it is being filled.
    Both filter baskets 132, 133 are preferably made of stainless steel and have a plurality of through holes 135 which are distributed over the entire surface 132 on the outer wall 132 and the inner wall 133. The complete surfaces of the outer wall 132 and the inner wall 133 are covered with the through holes 135, so that process water can escape in all areas.
    Preferably, through holes 135 having a diameter of at least 2 millimeters are used. The total area of the through holes 135 of the surface of the outer wall 132 or the inner wall 133 should be as large as possible. Good results could be achieved with a total area of the through holes 135 of about 40% of the area of the outer wall 132 and the inner wall 133 and more. Even with a share of 30% of the through hole total area to the surface of the outer and inner walls 132, 133, a drainage effect could be determined.
    Due to the design of the filter basket 13 in the form of a multi-walled filter basket 13 process water, which is extracted from the pulp suspension during pressing, from the filter basket 13 to the outside through the outer wall 132 and inwardly through the inner wall 133 from the pressing chamber 130 into the drip pan 102 escape. The distance D of the inner wall 133 to the outer wall 132 should be at most 100 millimeters. Accordingly, the process water must travel at most 50 millimeters within the pressing space 130 to leave the pressing space 130.
    The height H of the inner wall 133 and outer wall 132 here is one meter, whereby the dewatering device 1 can be kept compact and a maximum pressing of the dewatering device 1 can be limited to one meter. This is especially important when mounting on a truck and thus for the mobile version of the dewatering device 1.
    As experiments have shown, at least to the pressing space 130 facing surfaces of the outer wall 132 and the inner wall 133 must be made deburred and polished, so that in pressing no or only a few pulp in the press room 130 tilt, thus a continuous operation is possible. The punched-through holes 135 must have deburred edges, since otherwise a continuous operation is not possible. In order to additionally avoid tilting, the surfaces of the outer wall 132 and the inner wall 133 facing the pressing space 130 can additionally be polished. To stabilize the outer filter basket 132 and the inner filter basket 133, reinforcing ribs, not shown, are arranged along the circumference of the cylindrical surfaces.
    Experiments have shown that in operation pulp is conveyed in the pressing chamber 130 on the outer wall 132 and on the inner wall 131 along by the pressing die 122 rotating, which is oriented outwardly to the outer wall 132 and inwardly to the inner wall 131. In the process, this pulp is rolled along the walls 132, 131 and releases process water.
    In order for the multi-walled filter basket 13 shown to be used, a pressing die 122 in the form of a ring punch 122, which is adapted to the pressing space 130, is used here. In the perspective view of the ram device 12 according to FIG. 2b, the ring ram 122 is screwed to ram holding means or ram guide means 120 here in the form of bars 120. The rods are fastened to a punch-holding plate 120 on the side facing away from the ring punch 122. To increase the stability of the punch holding and guiding means 120, ribs are arranged on the punch holding plate 120.
    By the embodiment of the plunger device 12 and the multi-walled filter basket 13 described here, the hydraulic cylinder 121, the hydraulic piston 123 and other components necessary for the hydraulic actuation, such as supply lines, may be arranged within the filter basket 13.
    By means of the dewatering device 1 presented here, a pumpable pulp suspension S, composed of process water and a pulp, in particular pulp, can be dewatered in cycles. The fibrous suspension S used by the applicant originates from the collection of paper-based secret media which have been dissolved in a process water dissolver. The resulting pulp suspension S should be dewatered as much as possible, which can be achieved by means of the dewatering device 1. As tests have shown, other pulp suspensions S can also be dewatered from other sources, as described below.
    In a Einfüllakt, the ram 12 and thus the ring punch 122 is usually moved up to the maximum deflection of the pressing chamber 130 of the multi-walled filter basket 13 out. Since a hydraulic pressure is to take place vertically upwards, the hydraulic piston 123 is correspondingly deflected maximally downwards. The slider device 111 is moved into the filling position, so that pulp suspension S can be filled freely through the filling line 1101 and the filling opening 1111 into the pressing space 130 between the two filter baskets 132, 133.
    The supply of the pulp suspension S is shown only schematically in Fig. 3a and pumping units have been omitted for the sake of simplicity. While the pumpable pulp suspension S is introduced into the pressing space 130, a portion of the process water can already escape through the through holes 135 from both filter baskets 132, 133. This process is indicated by arrows which are intended to indicate escaping process water from both filter baskets 132, 133. The filling process is completed as soon as possible, the entire press room is filled to the filling opening 1111 with pulp suspension S.In the closure cycle, according to FIG. 3b, the slider device 111 of the closure device 11 is moved in such a way that the counterpressure section G closes at the level of the opening of the filter basket 13 and thus the pressing space 130.
    After the counterpressure section G covers the pressing space 130 and the slide device 111 has moved into a pressing position, the counterpressure plunger 1117 is at least partially lowered into the pressing space 130.
    Now the actual press cycle starts. The ram 12 and thus the ring punch 122 are pressed vertically against the effective direction of gravity by the double-walled filter basket 13 in the direction of the closure device 11 hydraulically driven. In this case, the fiber suspension S is partially dewatered, wherein process water is pressed through the outer wall 132 and the inner wall 133 of the filter basket 13 through the through holes 135 from the pressing space 130. Process water can be pressed out from the annular die 122 on both sides in the direction of the central longitudinal axis L and in the opposite direction radially out of the filter basket 13. The process water is then at least provisionally collected in the drip pan 102. Discharged process water can be pumped out through recycling lines, not shown, for reuse.
    A compacting filter cake is pressed by the ram device 12 in the direction of the counterpressure section G of the closure device 11, wherein it is further dehydrated.
    When the maximum pressure has been applied, the maximum compressed filter cake is between the ram 122, which is designed here as an annular die 122 and the counterpressive ram 1117 of the closure device 11. The filter cake also has a ring shape and the process water is so far through the filter baskets 132, 133 leaked. After reaching the maximum pressing pressure, the control ends the pressing process and the ring punch 122 is lowered slightly vertically from the counterpressure section G. Then the counter punch is opened and moved up, out of the press room 130thSubsequently, the slider device 111 is moved linearly, so that the filling and removal section E comes to rest on the pressing space 130. Since the filling and removal section E is designed here with a partially rounded cap with a cavity, according to this cavity is above the pressing space 130 to lie.
    Once the slider device 111 is placed with the filling and removal section E and a collection position according to FIG. 1c is reached, the ram 12 is further moved vertically upwards, the ring punch 122, the filter cake, not shown in the press room out in the Cavity of the slider device 111 in front of the cap 1114 presses. After completion of the pressing process, the filter cake is thus pushed up out of the filter basket 13 out into the cavity.
    In the last step, the slider device 111, entraining the filter cake, is displaced linearly relative to the ram device 12, which is indicated by the dashed arrow in FIG. 1c. In a maximum deflection of the slider device 111, an ejection position is reached. The filter cake falls next to the housing 10 in a container, not shown. After discharging the dewatering apparatus 1, the ram 12 and the shutter 11 can be returned to the filling state, and the pressing cycle can be performed anew.
    The achievable with the devices described herein and practicable filter cake is landfillable and has a pulp content of at least 30% at a process water content of at most 70%. With the dewatering device shown here usually filter cake with> 50% pulp content can be achieved, which can be recycled directly. Since so much process water can be squeezed out, an intermediate storage of the squeezable filter cake that can be disposed of is also readily possible, with the filter cake that can be disposed of being reloaded and transported away if necessary. With the present dewatering device 1 the shortest possible pressing operation with maximum Auspresswirkung is reached, which nevertheless leads to a landfillable filter cake.
    In order to selectively control the individual movements of the slider device 111, but also the ram device 12 and to avoid misalignments, a number of electrical or electromechanical sensors are provided by means of which the current positions of the slider device and the ram device 12 and the press ram 122 can be determined. The hydraulic drive should also be monitored with sensors by reading current hydraulic pressures. At any time, it should be determined where the press die 122 is located or which deflection is reached and what pressure the hydraulic cylinder of the press die 122 is subjected to.
    The sensors are connected to a control electronics, not shown, which controls the dissolution and dewatering process. So that the processes can proceed as desired, the positions of the moving components and, for example, the fill levels of the fiber suspension in the dissolving device, the fresh water tank and in a collecting container must be determined. By the sensor and the connection to the control electronics, a fully automatic implementation of the dissolution process with subsequent dewatering process with Reziklierung the process water, supply of fresh water and collection of the filter cake can be achieved. Manual intervention is only required when the file containers are delivered.
    In Fig. 4 is a collecting and Auflösefahrzeug 2, comprising a mobile resolving device 20 and a plurality of mobile entrainable drainage devices 1 is shown. Since the Applicant generates the pulp suspension S in the mobile dissolving device 20, a mobile drainage is also desired so that the process water for dissolution can be used as many times as possible. From a process water tank 21 process water is pumped into the dissolving device 20 and mixed there with the data carriers, whereby the pulp suspension S is generated. After a short time, the pulp suspension S can be filled into the dewatering apparatus 1 and dehydrated therein. In test series, 300 liters of pulp suspension S per minute were filled in each case in a dewatering device 1 and dewatered there.
    While process water is deposited in the sump 102, the squeezable landfill filter cake is moved into the sump 22.
    Especially the Ausffesseffizienz is of crucial importance here, since the filter cake can be separated from the process water as directly as possible after the complete unreading of the secret disk. The process water must be reused in mobile applications and quickly available. Otherwise, each collection and processing vehicle 2 would each have to carry an additional water tank.
    LIST OF REFERENCE NUMBERS
    [0053]<Tb> 1 <September> dewatering device<Tb> 10 <September> Housing<Tb> <September> 100101102 <September> press frameSplash guarddrip tray<Tb> 11 <September> closure device<Tb> <September> 110 <September> Frames<tb> <SEP> <SEP> 1101 filling line<tb> <SEP> <SEP> K section<Tb> <September> 111 <September> slider device1111 filling opening1112 rails1113 stop1114 cap1115 plate1116 hydraulic cylinders1117 counter punchE filling and removal sectionG counterpressure section<Tb> 12 <September> extruding die device<Tb> <September> 120120120121122123 <SEP> Stamp holding means or stamp guiding meansRodPunch platehydraulic cylindersPress punches (executed as ring punches)hydraulic pistons<tb> 13 <SEP> Filter basket (multi-walled)<Tb> <September> 130131132133134135DH <September> Press roominner spaceOuter wall / outer filter basket (cylindrical)Inner wall / Inner filter basket (cylindrical)Filter basket lidThrough holes in filter basketsdistanceheight<Tb> L <September> longitudinal axis<Tb> Z <September> feeding<Tb> A <September> outlet<Tb> M <September> Drive<tb> 2 <SEP> Collecting and dissolving vehicle<Tb> <September> 202122 <September> opening deviceProcess water tankClippings
    权利要求:
    Claims (18)
    [1]
    A dewatering apparatus (1) for dewatering a pumpable pulp suspension (S), wherein the pulp suspension (S) comprises pulp fibers and process water to achieve a filter cake having a pulp content of at least 30% pulp fibers after the press process, comprising a ram device (12) which a press ram (122) as an annular punch (122) formed by a multi-walled filter basket (13) within a housing (10) between an outer filter basket (132) and an inner filter basket (133) is feasible,the outer wall (132) and the inner wall (133) are each formed from a perforated plate having a plurality of through holes (135), characterized in that the total area of all the through holes (135) on the surface of the outer wall (132) and the inner wall (133 ) greater than 30% of the total area of the outer wall (132) and the inner wall (133) is selected, andthe edges of the through-holes (135) are made deburred to the surfaces of the outer wall (132) and the inner wall (133) facing the pressing space (130), whereby a passage of the pulp fibers through the through-holes (135) which is as frictionless as possible is achievable.
    [2]
    Second drainage device (1) according to claim 1, wherein the housing (10) of the dewatering device (1) with a closure device (11, IT), which has a filling and removal portion (E) and a counterpressure section (G) is closed.
    [3]
    A dewatering device (1) according to claim 2, wherein the shutter device (11, IT) comprises a stationary frame (110) and a movable slider device (111), whereinthe slider device (111) is linearly displaceable and can be brought into various positions relative to the frame (110) or to the housing (10).
    [4]
    4. dewatering device (1) according to claim 3, wherein the slide device (111) by means of a driven by an electronic control unit drive (M) between a filling position, a pressing position, a collecting position and an ejection position is linearly movable.
    [5]
    5. Dewatering device (1) according to claim 4, wherein the control electronics is operatively connected to a plurality of sensors, so that positions of the movable components, levels and pressures of the hydraulic drive are readable and the drainage can proceed automatically.
    [6]
    6. Dewatering device (1) according to one of the preceding claims, wherein the stationary frame (110) has a filling line (1101) is fastened, which is operatively connected to the filling and removal section (E).
    [7]
    7. dewatering device (1) according to one of the preceding claims, wherein the counterpressure section (G) a counterpressure plunger is arranged to be movable linearly in the direction of the pressing space (130).
    [8]
    8. dewatering device (1) according to claim 7, wherein the counter-pressure piston by a plurality of hydraulic cylinders (1116) is drivable.
    [9]
    A dewatering apparatus (1) according to any one of the preceding claims, wherein the through holes (135) have a diameter of at least 2 millimeters.
    [10]
    10. Dewatering device (1) according to claim 9, wherein the through holes (135) over the entire surface on the outer wall (132) and the inner wall (133) are distributed.
    [11]
    11. Dewatering device (1) according to one of the preceding claims, wherein the press room (130) facing surfaces of the outer wall (132) and the inner wall (133) are made polished.
    [12]
    A dewatering apparatus (1) according to any one of the preceding claims, wherein the outer filter basket (132) and the inner filter basket (133) have reinforcing ribs leading along the circumference of the cylindrical surfaces.
    [13]
    13. Dewatering device (1) according to one of the preceding claims, wherein the distance (D) between the inner wall (133) and outer wall (132) between 50 mm and 150 mm, preferably 100 mm.
    [14]
    A dewatering device (1) according to any one of the preceding claims, wherein the ram device (12) comprises a hydraulic piston (123) operable by a hydraulic cylinder (121) disposed within the inner filter basket (133).
    [15]
    15. Dewatering device (1) according to one of the preceding claims, wherein the inner filter basket (133) in the direction of the closure device (11) oriented a filter basket cover (134) the inner filter basket (133) is arranged to be closed, so that no pulp suspension (S) during filling can get into the interior (131).
    [16]
    A dewatering apparatus (1) according to any one of the preceding claims, wherein the ram apparatus (12) and the multi-wall filter basket (13) are oriented such that the ram (12) and ring punch (122) press against the force of gravity through the ram (130) are feasible.
    [17]
    17. Dewatering device (1) according to one of the preceding claims, wherein the outer wall (132) and / or the inner wall (133) are provided with reinforcing means, in the form of reinforcing ribs or reinforcing beads.
    [18]
    18. collecting and Auflösefahrzeug (2), comprising a dissolving device (20) in which pulp dissolvable by means of process water and a pulp suspension can be generated, characterized in that at least one mobile entrained drainage device (1) according to one of the preceding claims on the collection and Dissolving vehicle (2) is mounted so that a dehydration of the pulp suspension (S) from the dissolver device (20) is feasible and a landfillable depositing filter cake in a collecting container (22) is possible.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0397082B1|1994-09-21|Process and apparatus for dewatering sludges and similar products
    DE3319698C2|1986-05-07|Transportable press for high compression of radioactive waste from nuclear power plants and processes for pressing
    EP2335914A2|2011-06-22|Piston press
    DE202018104413U1|2019-11-04|Separator for wastewater treatment with movable sieve body
    CH711511A2|2017-03-15|&lt;TITLE&gt; Dewatering device for dissolver.
    EP0521179A1|1993-01-07|Method and device for making tubular filter elements
    EP0565824B1|1996-04-24|Press for dewatering substances through compression
    DE2731043C3|1981-01-15|Double acting membrane filter
    DE2243136C3|1980-03-27|Process and device for packaging solid radioactive or toxic waste
    CH655048A5|1986-03-27|PRESS FOR DRAINAGE AND COMPACTION OF WASTE.
    CH711512A1|2017-03-15|&lt;TITLE&gt; Dewatering process.
    DE19632964C1|1997-11-13|Filter press for dewatering sludges
    EP0463292A1|1992-01-02|Process for dehydrating aqueous sludges by way of pressure
    AT393118B|1991-08-26|SLUDGE DRAINAGE DEVICE
    DE102015221655A1|2017-05-04|Apparatus for the production of compacts
    EP0318872A2|1989-06-07|Device for the separation of gaseous and/or liquid matter from bulk or flowable material
    DE2709915A1|1978-09-14|PRESS FOR DEWATERING FIBER SUSPENSIONS
    DE516762C|1931-01-29|Piston rod dewatering press for raw peat and similar substances
    DE4212275C2|1995-01-05|Dewatering press for dewatering materials that can be dewatered by compressing
    EP0549882B1|1996-05-22|Apparatus for treating waste paint sludge
    DE3131544C2|1991-11-28|
    DE3833391A1|1989-06-08|DEVICE FOR EXPRESSING LIQUID FROM SHEET AND / OR GIANT MATERIAL
    DE166150C|1905-12-12|
    DE160853C|
    EP3159314A1|2017-04-26|Clarification unit, method and use
    同族专利:
    公开号 | 公开日
    CH711511B1|2019-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-04-30| PFA| Name/firm changed|Owner name: RHENUS DATA OFFICE AG, CH Free format text: FORMER OWNER: DISSOLVETECH AG, CH |
    2020-10-15| PFA| Name/firm changed|Owner name: RHENUS DATA OFFICE AG, CH Free format text: FORMER OWNER: RHENUS DATA OFFICE AG, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01312/15A|CH711511B1|2015-09-10|2015-09-10|Dewatering device for a dissolving device.|CH01312/15A| CH711511B1|2015-09-10|2015-09-10|Dewatering device for a dissolving device.|
    [返回顶部]