EP4056287B1 - Dispositif crible, en particulier dispositif crible à effet trampoline - Google Patents

Dispositif crible, en particulier dispositif crible à effet trampoline Download PDF

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Publication number
EP4056287B1
EP4056287B1 EP21201349.4A EP21201349A EP4056287B1 EP 4056287 B1 EP4056287 B1 EP 4056287B1 EP 21201349 A EP21201349 A EP 21201349A EP 4056287 B1 EP4056287 B1 EP 4056287B1
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EP
European Patent Office
Prior art keywords
sieve
sieve element
cross members
screening
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP21201349.4A
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German (de)
English (en)
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EP4056287C0 (fr
EP4056287A1 (fr
Inventor
Jörg Thomas
Paul Rademacher
Felix Matheisl
Günter SPECHT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wima Wilsdruffer Maschinen und Anlagenbau GmbH
Original Assignee
Wima Wilsdruffer Maschinen und Anlagenbau GmbH
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Publication date
Application filed by Wima Wilsdruffer Maschinen und Anlagenbau GmbH filed Critical Wima Wilsdruffer Maschinen und Anlagenbau GmbH
Priority to EP22187408.4A priority Critical patent/EP4115993B1/fr
Publication of EP4056287A1 publication Critical patent/EP4056287A1/fr
Application granted granted Critical
Publication of EP4056287C0 publication Critical patent/EP4056287C0/fr
Publication of EP4056287B1 publication Critical patent/EP4056287B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/48—Stretching devices for screens
    • B07B1/485—Devices for alternately stretching and sagging screening surfaces

Definitions

  • the present invention relates to a screening device, in particular a tension wave screening device, with a screen box having at least two opposite side walls, with a plurality of cross members arranged between the side walls and running transversely to the longitudinal direction of the screen box, and at least one elastic sieve element which preferably rests on the cross members and is connected to the cross members.
  • a sieving device of the aforementioned type feed materials that are difficult to sieve, such as moist, sticky, clumping and/or caking materials, can be separated or sieved.
  • transverse supports which are movable relative to one another, in particular pivotable, are used, on which at least one sieve element rests and is fastened. Due to the tension and relaxation or compression of the sieve element initiated by the relative movements of the cross members, particularly high throwing accelerations of the feed material resting on the sieve element are achieved. This is due in particular to the fact that the sieve element connected to the cross members is elastically deformed by the regular movement of the cross members, for example due to the cross members swinging relative to one another, and is thus caused to deflect or oscillate relative to the sieve box.
  • the disadvantage of this fastening solution is, first of all, that the terminal strip used protrudes from the top of the sieve element or from a sieve surface of the sieve element and therefore represents an obstacle to the particle transport during the sieving process.
  • the particles to be screened can build up in the area of the terminal strip and have a detrimental effect on the particle or conveying flow.
  • fastening elements protruding on the top are subject to increased wear, especially when screening fine and/or moist and/or abrasive materials, which requires replacement Sieve elements difficult.
  • the assembly and maintenance effort increases considerably, as the use of conventional wrenches becomes virtually impossible over time due to the wear of the screw heads or cap nuts caused by material flowing past.
  • the problem is to ensure a reliable seal of the sieve space or the sieve element from the adjacent environment.
  • the areas in which the sieve element delimits the sieve surface towards the side walls have proven to be particularly vulnerable. This is due in particular to the fact that gap areas form in the area of adjacent or abutting screen elements. These inevitably form weak points with regard to a reliable seal, since an enlargement of these gap areas is sometimes unavoidable due to the compression or stretching of the sieve elements during sieving operation.
  • the sieving device disclosed here has a sieve box in which alternating rigid and movable cross members are provided, with sieve elements resting on the cross members. Each screen element is connected via a curved covering support to a rigid cross member on the one hand and a movable cross member on the other hand in order to achieve tensioning and/or relaxation of the screen covering as a result of a relative movement between the rigid and movable cross members during the screening process.
  • longitudinal edge sections of the sieve element that run along the longitudinal direction of the sieve box also have a high susceptibility to unwanted passage of sieve materials or an inadequate seal.
  • the one in the EP 2 926 916 A1 disclosed screening device is also inadequate.
  • the screen linings are mounted on lining supports and are curved upwards at their lateral edge areas.
  • the lateral sealing in the area of the longitudinal edge sections takes place via a cover strip running in the longitudinal direction of the screen box, which overlaps the screen covering on the top side and rests in a clamping manner on the top end of the screen elements.
  • the sealing via the cover strip is inadequate in that a reliable seal only occurs in the areas in which the cover strip rests directly in a clamping manner on the upper edge of the covering carrier, which then acts as a counter bearing to the cover strip.
  • there is no abutment between the covering carriers so that in this area in particular during sieving operation there is no continuous seal between the cover strip and the sieve element due to the relative movement or compression of the sieve element.
  • This then also leads to the formation of a gap in the area of the cover strip, especially when the sieve element is compressed, as a result of which material to be sieved can then escape from the sieve area and enter the environment, accompanied by reduced sieving efficiency and the need for frequent cleaning of the sieve device.
  • the US 2005/0274652 A1 relates to a screening device with cross members.
  • the US 2013/0126398 A1 relates to a screening device and a method for screening material.
  • the DE 10 2012 206 347 A1 relates to a screening device with a base frame that can be set in vibration.
  • the present invention has the task of providing a sieve device which enables a particularly reliable seal in the area of the longitudinal edge section of the sieve element.
  • the aforementioned object is achieved in a sieve device of the type described above in that at least one longitudinal edge section of the sieve element, which runs along the longitudinal direction of the sieve box, is clamped and thus held over its entire length by a sealing device.
  • a clamping of the longitudinal edge section is provided over the entire length of the sieve element.
  • an appropriately designed sealing device is used, which ensures that the sieve element is clamped in the longitudinal edge section not only over a limited area, for example in the area of the cross members, but is tightly clamped to the side wall over its entire length, in particular between adjacent cross members is held.
  • the sealing device has at least one lower, in particular strip-shaped, sealing means and at least one upper, in particular strip-shaped, sealing means, and that the longitudinal edge section of the sieve element is clamped in a clamping gap between the upper and the lower sealing means.
  • Such a design of the sealing device provided according to the invention ensures that the longitudinal edge section of the sieve element is clamped flat over the entire length along the longitudinal direction of the sieve box and is therefore held particularly reliably relative to the side wall. Unlike the prior art, where a more punctual sealing occurs, the invention results in a secure seal over the length of the sieve element.
  • the sealing device is fastened to the side wall in such a way that the clamping gap is arranged above the cross members and in particular above deflection means arranged on the cross members and deflecting the sieve element along the longitudinal edge.
  • the clamping gap in which the longitudinal edge section of the sieve element is clamped, is arranged offset upwards relative to the cross members and, in particular, relative to the deflection means.
  • the sieve element is preferably guided upwards on its two opposite longitudinal edge sections which run in the longitudinal direction of the sieve box in order to achieve a trough or container-shaped design of the sieve surface.
  • the sealing described above advantageously takes place in the area of the two longitudinal edge sections of the sieve element.
  • the clamping gap is designed to extend in an angular range of greater than 5° to the plane of the side wall, in particular with the sealing elements being wedge-shaped on mutually facing sides and/or each having beveled clamping surfaces.
  • the implementation of a bevelled clamping gap is associated with further improvements in terms of the sealing effect in the longitudinal edge section and thus further increases the screening efficiency.
  • the deflection means which can be designed in the form of an arc section and/or polygon for deflection, it is in particular provided that they are attached exclusively to rigid cross members. In contrast, preferably no deflection means are provided on movable cross members. This also takes into account the fact that rigid cross members are less susceptible to inadequate sealing compared to movable cross members. Accordingly, it would be comparatively disadvantageous, but in principle possible, to also provide deflection means on the movable cross members, since these would cause corresponding deformations in the longitudinal edge sections as a result of the movement of the movable cross member. This could then lead to undesirable gap formation and also increases material wear on the sieve element, the deflection means and the sealing means.
  • At least two rigid cross members and at least one between the rigid cross members arranged movable cross members are provided that the sieve element is connected to the cross members in such a way that a relative movement of adjacent cross members results in a tensioning or relaxation of the sieve element, and that the sieve element is attached to at least three successive cross members.
  • the screening device preferably has several screening elements and/or several alternately arranged rigid and movable cross members.
  • each sieve element is attached to at least three successive cross members.
  • a single sieve element can also be provided, which extends over any number of rigid and movable cross members, preferably arranged alternately, and is firmly connected to them. In this embodiment, no sieve gap is ultimately provided, since only a single sieve element of the sieve device is provided.
  • At least one sieve element is attached to its opposite transverse edge sections, which run transversely to the longitudinal direction of the sieve box, to a rigid cross member and in the central area to at least one movable cross member arranged between the rigid cross members.
  • the sieve element has at least one fastening means running transversely to the longitudinal direction of the sieve box on its underside facing the cross members in the area of the transverse edge sections and in a central area for cooperation with a corresponding fastening means of the cross members.
  • This inventive aspect is ultimately independent of the sieve device and therefore only affects the design of the sieve element with the fasteners on the underside.
  • the sieve element can also have the fastening means only in the area of the transverse edge sections.
  • the sieve element also has fastening means in the central or middle region transverse to the longitudinal direction of the sieve box for cooperation with corresponding fastening means of the cross members.
  • a special sieve element which has specifically designed fastening means on the underside to ensure a reliable connection or attachment to at least three successive cross members.
  • the sieve element provided according to the invention is designed in particular for use in a sieve device preferably according to the invention, in particular in a tension wave sieve device, in order to ensure fastening to at least three cross members arranged one behind the other in the longitudinal direction to ensure sealed sieving operation.
  • the sieve element is fastened to a cross member via at least one sieve element holder and that the connection or attachment of the sieve element holder to the cross member takes place via a latching device.
  • the sieve elements are attached to the associated cross beams via strip-shaped sieve element supports.
  • the sieve element carriers are fastened along the cross member using a plurality of screws.
  • the screen element carriers are exposed to considerable mechanical stress. This can be observed in particular in the area of the movable cross members, through which the screen element carriers are constantly exposed to recurring compressive and stretching loads.
  • the EP 2 926 916 A1 The proposed screw connection has proven to be particularly vulnerable, since the sieve element carrier made of plastic is ultimately fastened via a metal connection, which is formed by the screw or a reinforcement of the sieve element carrier on the one hand and the cross member on the other hand, accompanied by an increased wear effect on the cross member , in contrast to the sieve element carrier, cannot be replaced or can only be replaced with increased effort.
  • a locking device ensures a simple and therefore time- and cost-saving connection and attachment of the sieve element carrier to assigned cross members, which can be carried out by an operator largely without tools or with reduced use of tools. This ensures maintenance-friendly operation due to the efficient replacement of worn screen element carriers. At the same time, the advantages associated with the locking device are also transferred to the replacement of different or foreign screen element carriers, especially if correspondingly differently designed screen elements have to be used when changing the screening operation. This applies in particular to the case when a screening device conventionally designed as a tension shaft screening device is used in throwing screen operation with system coverings or is converted to this, which will be described in detail below
  • the latching device has at least one latching projection of the screen element holder which projects in the direction of the cross member and at least one latching receptacle which extends on the cross member transversely to the longitudinal direction of the screen box and corresponds to the latching projection.
  • the locking projection is preferably assigned to the sieve element holder.
  • the locking projection is arranged, preferably formed, on an underside of the screen element holder facing the cross member.
  • the sieve element holder proposed in the context of the present invention also represents an independent or inventive aspect of the invention, in particular in that a sieve element holder is proposed for use in a sieve device, in particular in a tension wave sieve device, which has a locking device with an associated cross member can be connected.
  • a screen element holder designed according to the invention in a screening device preferably according to the invention, in particular a tension wave screening device is also proposed.
  • the sieve element holder acts as a fastening means for connecting the sieve element to the cross member, the sieve element holder in turn being fastened to the associated cross member in a latching manner or by means of a latching device, i.e. without screws and/or directly.
  • the latching receptacle is provided on an upper side facing the sieve element holder of a, preferably C-profile, connecting holder which runs transversely to the longitudinal direction of the sieve box.
  • the connection of the screen element holder to the associated cross member is thus carried out indirectly or via the connection holder, in the sense that a locking projection of the screen element holder engages in an assigned locking receptacle on the connection holder and can therefore be releasably fixed relative to the connection holder and ultimately to the cross member.
  • connection holder which preferably consists of a rigid material, in particular a metal material, is connected directly to the cross member, in particular positively, non-positively and/or materially, for example welded.
  • connection or fastening techniques for connecting, in particular, profile-shaped holders to, for example, metal supports are possible and are well known to those skilled in the art.
  • the sieve element holder preferably has at least one side bar for laterally reaching over the connecting holder.
  • the side bar can preferably be connected in one piece to the sieve element holder or formed in one piece on it. In this way, a reliable fixation of the sieve element holder on the cross member can be achieved, accompanied by an efficient transfer of movement from the cross member to the sieve element and ultimately with a reliable and efficient sieving operation.
  • the sieve element holder preferably has on its upper side facing the sieve element at least one fastening means which runs transversely to the longitudinal direction of the sieve box and is preferably groove-shaped, the fastening means of the sieve element holder being intended to cooperate with a corresponding fastening means of the sieve element.
  • the sieve element holder has at least two fastening means, in particular these fastening means being designed to run parallel to one another and transversely to the longitudinal direction in order to cooperate with corresponding fastening means which are preferably arranged on the underside of the sieve element. In this way, a gentle and/or efficient connection of the sieve element to the sieve element holders or the cross members is achieved.
  • Fig. 1 shows a perspective view of a proposed screening device 1, which is in particular a tension wave screening device.
  • the sieving device 1 has a sieve box 2, which comprises two opposite, mutually parallel side walls 3.
  • the sieve box 2 has a longitudinal extension L.
  • the longitudinal extent L preferably refers to a longitudinal extent or longitudinal extension of the side walls 3.
  • the longitudinal direction L is aligned parallel to the side walls 3.
  • the longitudinal direction L is not associated with a restriction with regard to the shape of the sieve box 2 or the side walls 3, for example in that they must be elongated or elongated.
  • the longitudinal direction L can also relate to a conveying direction of the material to be screened. This is particularly the case when the sieve box 2 is not placed horizontally, but rather diagonally on a surface or floor.
  • the inclined arrangement is often used in practice in order to realize a flow of the sieved material, in particular due to gravity, as part of the sieving process and thus to ensure a continuous supply or removal of the material to be sieved along the sieve surface.
  • the sieve box 2 can be mounted so that it can oscillate relative to the ground and/or be decoupled from the ground.
  • a spring-damper arrangement or at least one suspension and/or at least one damping can be arranged between the sieve box 2 and the substrate.
  • the side walls 3 are formed in one piece or in one piece.
  • one or both side walls 3 can be designed in several parts in the longitudinal direction L or can be composed of several wall segments.
  • the screening device 1 of the Fig. 1 and 2 has several rigid cross members 4 arranged between the side walls 3, in this case rigidly connecting the side walls 3, which is shown in the sectional view Fig. 2 is indicated.
  • rigid cross members 4 in particular several cross members 5 that are movable relative to the rigid cross members 4 are provided.
  • the movable cross members 5 can be driven by a motor to realize a preferably oscillating pivoting movement.
  • the movable cross members 5 can be pivoted about a pivot axis, so that the movable cross beams 5 can carry out a pivoting back and forth movement on a circular arc section around the pivot axis, in particular in a positively guided manner.
  • the movable cross members 5 it is also possible for the movable cross members 5 to be moved and/or driven translationally or linearly in the longitudinal direction L relative to the rigid cross members 4. Ultimately, it is in principle also possible to carry out a combination of pivoting and translational movement components in order to realize a relative movement of the movable cross members 5 relative to the rigid cross members 4.
  • the implementation of the invention is preferably not limited to a specific type of movement of the movable cross members 5, as long as a relative movement of movable cross members 5 to rigid cross members 4 is implemented.
  • the sieve device 1 has a plurality of sieve elements 6, preferably made of an elastic material, which are connected to the rigid cross members 4 and the movable cross members 5 in such a way that when the movable cross members 5 are pivoted, these sieve elements 6 are tensioned and/or relaxed results.
  • the sieve elements 6 are arranged one after the other or adjacent to one another in the longitudinal direction L. Furthermore, it is shown that the sieve elements 6 rest on the cross members 4, 5, so they preferably cover them in order to form a closed sieve surface. Adjacent sieve elements 6 can abut each other at the edges. An edge-side overlap is also possible, in particular in such a way that a sloping step results in the conveying direction.
  • the sieve elements 6 extend over their longitudinal edge sections R running along the longitudinal direction L of the sieve box 2 entire length are held clampingly by a sealing device 9, as in Fig. 1 is clarified.
  • the opposite longitudinal edge sections R of the sieve elements 6 are clamped and held by a sealing device 9 over the entire length of the sieve element 6.
  • the sealing device 9 is located on a side wall 3 of the sieve box 2, with the sieve element 6 being deflected from its support plane via the rigid cross member 4 in the direction of the side wall 3 via deflection means 10.
  • a trough-shaped sieve surface is ultimately formed, as is the case in particular in the embodiment according to Fig. 5 is shown.
  • the sieve element 6 can be guided in the direction of the side wall 3 via deflection means 10 provided on at least one movable cross member 5.
  • the screening device 1 in the embodiment according to Fig. 1 is ultimately characterized by a particularly efficient sealing of the sieve elements 6 in the area of the longitudinal edge sections R, in that a sealing device 9 in the longitudinal direction L enables continuous or uninterrupted clamping of the longitudinal edge sections R of the sieve elements 6 independently of the deflection means 10.
  • the sealing device 9 is formed over the entire length of the sieve elements 6 in the longitudinal direction L and is held or fastened to an associated side wall 3.
  • the sealing device 9 has at least one lower strip-shaped sealing means 9a and at least one upper strip-shaped sealing means 9b, the longitudinal edge sections R of the sieve elements 6 being clamped in a clamping gap formed between the sealing means 9a, 9b.
  • the upper sealant 9b is made up of several parts or is composed of several, here two, sealant segments.
  • one or each sealing means 9a, 9b can also be designed in one piece or continuously in one piece or without interruption in the longitudinal direction L.
  • the gap width of the clamping gap and / or the clamping force acting to achieve a sufficient frictional connection between the sealing means 9a, 9b and the longitudinal edge section R is preferably infinitely adjustable.
  • sieve elements 6 with any thickness can be clamped securely and sealingly on their longitudinal edge sections R.
  • the preferably stepless adjustment takes place in particular via a threaded or other spindle-like device, which is preferably part of the sealing device 9 and/or is arranged on it.
  • each sieve element 6 is deflected upwards on both opposite longitudinal edge sections R via a deflection means 10 in order to realize a container- or trough-shaped sieve surface with regions guided upwards at the edge, as is particularly the case with reference to Fig. 3 is clarified.
  • FIG. 1 This shows Fig. 1 that the sealing device 9 is fastened to the side wall 3 in such a way that the clamping gap is arranged above the cross members 4, 5 and above the deflection means 10 arranged on the cross members 4, 5.
  • the clamping gap is arranged or aligned in an angular range of greater than 5° to the plane of the associated side wall 3, in particular whereby the sealing elements 9a, 9b are wedge-shaped on mutually facing sides and/or each have beveled clamping surfaces.
  • the clamping gap is inclined towards the associated side wall 3.
  • other technical solutions are also possible here, according to which the clamping gap is inclined away from the side wall 3, as shown in particular Fig. 5 is clarified.
  • At least one sieve element 6 is attached to at least three successive cross members 4, 5, as shown by the sieve element 6 arranged on the left in the illustration Fig. 2 visible.
  • the exact attachment of the sieve element 6 to the cross members 4, 5 will be discussed in detail later.
  • the screening device 1 in particular the embodiments of Fig. 1 to 2 , is ultimately characterized by the fact that at least one, preferably each, sieve element 6 is attached to three successive cross members 4, 5. This reduces gap or transition areas, such as those present in the area of adjacent sieve elements 6.
  • the connection of the sieve elements 6 takes place without fastening parts which protrude from the top or are accessible from the top of the sieve elements 6.
  • the sieve surfaces of the individual, adjoining sieve elements 6 are preferably at least essentially aligned with one another on the upper side or, in the case of an overlap, merge into one another over a step.
  • this is preferably achieved in that the sieve elements 6 are aligned with their transverse edge sections Q facing each other or abutting one another. This avoids areas that protrude on the top and negatively influence the flow of the material being screened.
  • the same effect is also achieved if - as described above - adjacent sieve elements overlap at the edge, with a step sloping in the conveying direction.
  • each sieve element 6 is attached to opposite transverse edge sections Q, which run transversely to the longitudinal direction L of the sieve box 2, to a rigid cross member 4 and to at least one central region M on at least one movable cross member 5 arranged between the rigid cross members 4.
  • each sieve element 6 is attached to a rigid cross member 4 at its transverse edge sections Q and to exactly one movable cross member 5 in the central area M.
  • central area M is to be interpreted accordingly broadly, in the sense that ultimately every section running between the transverse edge sections Q and along the longitudinal direction L is included.
  • the middle or central area M does not necessarily have to be exactly or at the same distances or when viewed in the longitudinal direction L. lie symmetrically between the transverse edge sections Q, but can also run at different distances, with respect to the longitudinal direction L, between the transverse edge sections Q.
  • a sieve element 6 can also be attached to several central areas M with further cross members 4, 5, in particular to each central area M on a movable cross member 5. However, at least one additional attachment in a further central area M on a rigid cross member 4 be provided.
  • a sieve element 6 In the enlarged view according to Fig. 2a the attachment of a sieve element 6 to a movable cross member 5 is shown in a central area M.
  • the sieve element 6 has on its underside facing the cross members 4, 5 in the central area M a row of two fastening means 7 running transversely to the longitudinal direction L of the sieve box 2, which are designed to cooperate with corresponding fastening means 8 which are arranged on the movable cross member 5. are trained. However, this does not necessarily have to be the case. A number of fasteners are generally sufficient.
  • fastening means 7 of the sieve element 6 protrude from the underside of the sieve element 6 in the direction of the movable cross member 5 and are integrally formed on the underside of the sieve element 6.
  • other technical solutions are also possible here, for example a connection of fastening means 7 to the sieve element 6, in particular via appropriately designed adapter elements or adapter strips, which are subsequently attached to the underside of the sieve element 6 after the actual sieve element 6 has been manufactured.
  • each sieve element 6 also has a fastening means 7 running transversely to the longitudinal direction L of the sieve box 2 in the area of the transverse edge sections Q.
  • the fastening means 7 provided on the transverse edge sections Q can in principle, and preferably, be similar to the fastening means 7 in the area of the central region M can be formed, i.e. formed on the underside and/or in one piece.
  • a different design of the fastening means 7 compared to the central region M can also be realized on the transverse edge sections Q.
  • no fastening means 7 on the underside are preferably provided in order to obtain a connection of the sieve element 6 that is as gap-free as possible on the edge to a sealing device which will be described in more detail below.
  • each fastening means 7 is strip-shaped and/or designed with a thickened or widened free end.
  • this thickened free end is then designed to engage in a corresponding widened receptacle of the fastening means 8 of the cross members 4, 5 in order to realize a clamping and/or locking fixation of the sieve element 6 on the cross members 4, 5.
  • the fastening means 7 are preferably designed to be elastic, in particular to enable them to snap into the associated fastening means 8 on the cross members 4, 5 at the top.
  • each sieve element 6 is fastened to the cross members 4, 5 via several sieve element holders 11, in the example shown via three sieve element holders 11. How this attachment is carried out in detail is explained below using the enlarged illustration Fig. 2a explained, in which the attachment of a sieve element 6 in the central area M to a movable cross member 5 is shown enlarged. It goes without saying that the following statements apply equally to the other fastening areas, i.e. to the transverse edge sections Q or to the rigid cross members 4.
  • the sieve element holder 11 is connected to the movable cross member 5 via a latching device 12.
  • the locking device 12 has a locking projection 13 projecting in the direction of the cross member 5 and a locking receptacle 14 on the cross member 5, which also runs transversely to the longitudinal direction L of the screen box 2.
  • the locking projection 13 is preferably on the cross member 5 facing Underside of the sieve element holder 11 arranged, integrally formed in the example shown.
  • connection holder 15 running transversely to the longitudinal direction L is also provided.
  • the locking receptacle 14 is provided or formed on or in the connection holder 15.
  • the connection holder 15 is profile-shaped, preferably as a C-profile with a slot on the top, the locking receptacle 14 being formed within the connection holder 15 and laterally limited by legs of the connection holder 15 projecting in the direction of the sieve element 6, preferably with the legs on their free ends are aligned facing each other, preferably bent towards each other, so that a rear grip is possible.
  • the locking projection 13 can snap between the legs and ultimately into the locking receptacle 14.
  • connection holder 15 consists of a rigid material, in particular a metal material, preferably steel, and is firmly connected to the cross member 5.
  • fastening options for example a detachable connection, in particular by means of screwing.
  • an inseparable connection of the connection holder 15 to the cross member 5 can also be realized, for example by means of welding or gluing.
  • Other fastening options for example via a further snap connection and/or clamping, are also possible.
  • the sieve element holder 11 which in principle also has its own inventive significance, has two side strips 16 in the example shown, which preferably stand on the respective cross member 5, 6.
  • the side strips 16 also extend transversely to the longitudinal direction L and surround the connection holder 15 on both sides.
  • the side strips 16 are integrally formed on the sieve element holder 11.
  • other technical solutions are also possible here, for example a detachable connection of the side strips 16 to the sieve element holder 11.
  • the sieve element holder 11 as such is preferably made of or has a plastic material.
  • the sieve element holder 11 has on its upper side at least one fastening means 8, in the example shown, which runs transversely to the longitudinal direction L and which are designed to cooperate with the corresponding or complementary fastening means 7 of the sieve element 6.
  • the fastening means 8 are designed as longitudinal grooves and, in particular, have a widened end region into which correspondingly designed, widened free ends of the fastening means 7 can engage and/or preferably snap in a clamping and/or locking manner.
  • the implementation of two fastening means 8 on the top of the sieve element holder 11 has the advantage that two adjacent sieve elements 6 can be fastened at the edge via a sieve element holder 11. With such a design of the sieve element holder 11, it can then also make sense to provide two corresponding fastening means 7 on the underside of the sieve element in the central area M in order to ensure a particularly good connection of the central area of the sieve element 6 to the associated cross member 4, 5, in particular to the movable one Cross member 5, available.
  • Fig. 3 An embodiment is shown in which the sieve element 6 is fastened to a rigid cross member 4 in the transverse edge section Q and is fastened to movable cross members 5 in between in the central region M. Accordingly, according to this embodiment, the sieve element 6 can extend in the longitudinal direction over any number of cross members 4, 5, in particular over more than three cross members 4, 5, in the longitudinal direction L.
  • the deflection means 10 are designed to be curved upwards in order to realize a corresponding upward deflection of the sieve elements 6 at their longitudinal edge sections R.
  • a polygon-like shape can also be provided.
  • the deflection means 10 serve to move the sieve element 6 out of the actual Sieve plane, which is provided by the cross members 4, 5, in the direction of the side walls 3, which preferably run at right angles to them.
  • the deflection means 10 are arranged in the area of the side walls 3 and, if necessary, attached to cross members 4, 5 or adjoin them. In the present case, 4 deflection means 10 are only provided on rigid cross members.
  • the deflection means 10 can only be attached to the cross members 4, 5, i.e. not to the side walls 3.
  • the attachment of the deflection means 10 to the cross members 4, 5 can preferably be carried out in a latching and/or clamping manner.
  • an analogous locking device 12 which was previously discussed in connection with the sieve element holder 11, to connect the deflection means 10 to the cross member 4 or 5.
  • another type of fastening for example screwing, can also be used to connect the deflection means 10 to the cross members 4, 5.
  • a deflection means 10 adjoins one end of the sieve element holder 11. It is understood that when deflecting both longitudinal edge regions R of a sieve element 6, a deflection means 10 is arranged at each end of the sieve element holder 6 or adjoins it.
  • deflection means 10 can be formed in one piece with the sieve element holder 11. This results in a compact unit that is easy to assemble.
  • the deflection means 10 can, as is particularly the case in Fig. 5 can be seen, be arranged or aligned directly adjacent or contact-bound to the side walls 3. In this constellation, it is particularly possible for the sealing devices 9 or the corresponding sealing means 9a, 9b to be arranged offset above or upwards relative to the deflection means 10.
  • the deflection means 10 it is also possible for the deflection means 10 to be arranged inwardly offset relative to the side wall 3 or to be arranged relative to the side walls 3 to form an intermediate gap. This is preferably done in such a way that between the deflection means 10 and the Side walls 3, the lower sealing element 9a of the sealing device 9 can protrude into this intermediate gap.
  • Such a constellation is particularly advantageous if the screening device 1 according to the invention is to be transferred from an operation as a tension wave screening device to another operation, in particular a throwing sieve operation with system sieves.
  • the sieving device 1 according to the invention is shown here in a throwing sieve operation with system sieves or not in a tension wave sieve operation.
  • the throwing sieve operation with system sieves can be accompanied by the use of additional or different sieve elements 17, which are preferably designed to be inelastic or inflexible.
  • the lower sealing means 9a of the sealing device 9 can function as a protective element for the side wall 3, and, particularly preferably, extends to the top of the sieve elements 17 . It goes without saying that the lower sealant 9a acts as a protective element not only for one but for both side walls 3 and/or protrudes up to the top of the sieve elements 17.
  • the upper sealing means 9b as well as the preferably elastic sieve elements 6 and, if necessary, deflection means 10 are to be removed.
  • the lower sealant 9a remains on the screen box 2 and, as defined above, fulfills the function as a protective element or protective strip for the associated side wall 3.
  • the sieve element holders 11, which are used in particular for the tension shaft sieve operation can be removed from the connecting holders 15 quickly or largely without tools.
  • the other sieve element holders 18, which also preferably have a latching device 12 in the sense discussed above are snapped onto the connecting holders 15 provided on the cross members 4, 5.
  • the sieve elements 17 provided for the throwing sieve operation with system sieves can then be placed or clamped onto the sieve element holders 18.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Claims (5)

  1. Dispositif de tamisage (1), en particulier dispositif de tamisage à arbre de tension, avec un caisson de tamisage (2) présentant au moins deux parois latérales (3) opposées, avec plusieurs supports transversaux (4, 5) disposés entre les parois latérales (3) et s'étendant transversalement à la direction longitudinale (L) du caisson de tamisage (2) et au moins un élément de tamisage (6) élastique et relié aux supports transversaux (4, 5),
    caractérisé en ce
    qu'au moins une section de bord longitudinal (R) de l'élément de tamisage (6) s'étendant dans la direction longitudinale (L) du caisson de tamisage (2) est serrée sur toute sa longueur par un dispositif d'étanchéité (9) et est ainsi maintenue.
  2. Dispositif de tamisage selon la revendication 1, caractérisé en ce que le dispositif d'étanchéité (9) présente au moins un moyen d'étanchéité inférieur (9a), en particulier en forme de baguette, et au moins un moyen d'étanchéité supérieur (9b), en particulier en forme de baguette, et en ce que la section de bord longitudinal (R) de l'élément de tamisage (6) est serrée dans une fente de serrage entre les moyens d'étanchéité supérieur et inférieur (9a, 9b).
  3. Dispositif de tamisage selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'étanchéité (9) est fixé sur la paroi latérale (3) de telle sorte que la fente de serrage est disposée au-dessus des supports transversaux (4, 5) et, en particulier, au-dessus de moyens de déviation (10) disposés sur les supports transversaux (4, 5) et déviant l'élément de tamisage (6) du côté du bord longitudinal.
  4. Dispositif de criblage selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de déviation (10) sont fixés exclusivement sur des supports transversaux rigides (4).
  5. Dispositif de criblage selon l'une des revendications 1 à 4, caractérisé en ce que la fente de serrage s'étend dans une plage angulaire supérieure à 5 degrés par rapport au plan de la paroi latérale (3), en particulier dans lequel les moyens d'étanchéité (9a, 9b) sont réalisés en forme de coin sur des côtés tournés l'un vers l'autre et/ou présentent chacun des surfaces de serrage biseautées.
EP21201349.4A 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline Active EP4056287B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22187408.4A EP4115993B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021001207.0A DE102021001207A1 (de) 2021-03-08 2021-03-08 Siebvorrichtung insbesondere Spannwellensiebvorrichtung

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP22187408.4A Division-Into EP4115993B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline
EP22187408.4A Division EP4115993B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline

Publications (3)

Publication Number Publication Date
EP4056287A1 EP4056287A1 (fr) 2022-09-14
EP4056287C0 EP4056287C0 (fr) 2023-09-27
EP4056287B1 true EP4056287B1 (fr) 2023-09-27

Family

ID=82781978

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21201349.4A Active EP4056287B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline
EP22187408.4A Active EP4115993B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22187408.4A Active EP4115993B1 (fr) 2021-03-08 2021-10-07 Dispositif crible, en particulier dispositif crible à effet trampoline

Country Status (2)

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EP (2) EP4056287B1 (fr)
DE (1) DE102021001207A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521753A1 (de) 1985-06-18 1986-12-18 Hein, Lehmann AG, 4000 Düsseldorf Siebmaschine mit einem an querelementen befestigten siebbelag
US7344032B2 (en) * 2004-06-14 2008-03-18 Action Equipment Company, Inc. Flexible sieve mat screening apparatus
US8757392B2 (en) * 2011-11-23 2014-06-24 Action Vibratory Equipment, Inc. Flexible mat screening apparatus with offset supports
DE102012206347B4 (de) * 2012-04-18 2014-09-04 Spaleck Gmbh & Co Kg Siebvorrichtung
EP2926916A1 (fr) 2014-04-03 2015-10-07 IFE Aufbereitungstechnik Gmbh Joint d'étanchéité latéral pour un tamis à arbres tendeurs
DE102017112108B3 (de) 2017-06-01 2018-02-22 Spaleck GmbH & Co. Kommanditgesellschaft Siebvorrichtung mit Querträgern und daran angebrachten Siebmatten
WO2020057719A1 (fr) 2018-09-17 2020-03-26 Sandvik Srp Ab Support pour milieu de tamisage
DE102020002308B3 (de) 2020-03-06 2020-12-03 WIMA Wilsdruffer Maschinen- und Anlagenbau GmbH Siebvorrichtung, insbesondere Spannwellensiebvorrichtung

Also Published As

Publication number Publication date
EP4056287C0 (fr) 2023-09-27
EP4115993C0 (fr) 2024-04-17
EP4115993B1 (fr) 2024-04-17
EP4115993A1 (fr) 2023-01-11
EP4056287A1 (fr) 2022-09-14
DE102021001207A1 (de) 2022-09-08

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