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
  • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
  • B07B1/4645—Screening surfaces built up of modular elements
• • 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
  • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
  • B07B1/4672—Woven meshes
• • 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 chip-wave screening machine comprising a first moving system having a first cross member and a second moving system having a second cross member, wherein first and second moving systems are arranged to be movable relative to each other and at least one screen mat is provided on both an associated first cross member as well as to an associated second cross member to achieve an alternating upsetting and stretching of the screen mats, according to the preamble of claim 1, and to a screen mat unit for a Spannwellensiebmaschine with a screen mat and one for attachment to a cross member of a moving system of Spannwellensiebmaschine provided, arranged in the edge region clamping element, according to the preamble of claim 12th
• Spannwellensiebmaschinen are already known. They are used both in the coarse grain and in the fine grain range and are characterized by compression and expansion of the screen mats, which has the consequence that the formation of the plug grain opposite
• the punching of the screen openings is a time-consuming and cost-intensive process, which requires a high production time for a screen mat.
• the diameter of the screen openings during punching technology can not be reduced arbitrarily or in other words, there is a limit to the dimensions of the screen openings, from which the punching of the same is no longer possible, both as regards the technology as such and as regards the economy , In practice, this limit is at a mesh size of about 1 mm for square screen openings and about 0.4 mm x 4 mm for slot-shaped screen openings.
• fine sieve mats made of synthetic fabric, for example polyamide fabric.
• These fine mesh mats offer due to their production as a fabric, in contrast to the stamped polyurethane solution, the possibility of particularly fine-meshed design of the screen mats, which also involves a much larger, open screen surface, which causes among other things, a small size of equipped with such Feinsiebmatten screening machines.
• Dispensing with the use of the whip effect would, however, drastically reduce the screening performance due to increased occurrence of plug-in grain and require service lives within which the plug-in grain has to be manually removed from the wire.
• Chipwellensiebmaschinen comprising a first cross member having first moving system and a second transverse system having second moving system, wherein first and second moving system are arranged to be movable relative to each other and at least one screen mat is provided, which is attached to both an associated first cross member and to an associated second cross member, to alternately compressing and stretching the screen mats to achieve, the screen mat is formed as a fabric made of plastic fabric Feinsiebmatte and is connected via at least one connecting element with the associated first cross member and / or the associated second cross member, which has a, compared to the fabric made of plastic fabric Feinsiebmatte, greater elongation at break.
• connection element Due to the already mentioned low elongation at break of the plastic fabric compared to the stamped polyurethane mesh mats is dampened by placing one or more elastic connection elements between Feinsiebmatte and first or second moving system or between Feinsiebmatte and associated first cross member or associated second cross member whiplash effect, without however, its screen opening to prevent cleaning effect.
• the material must not be chosen so that there is an excessive swinging of the Feinsiebmatten.
• the at least one attachment element is a spring element, for example, a conventional coil spring could be used, which moved the Feinsiebmatte on the first moving system, such as a screen box or on the second System, such as a swing frame, mounted on the respective cross member.
• connection element is a clamping element made of plastic, which is fastened to the associated first cross member and / or the associated second cross member and in which the Feinsiebmatte is poured.
• This variant is characterized by particular robustness.
• a further preferred embodiment of the invention according to claim 4 provides as a connection element before a plastic bed which is cast in a receptacle of a fastened to the associated first cross member and / or the associated second cross member clamping element.
• the Feinsiebmatte is poured.
• the clamping element may well be made of a harder material in this case and not have the required for the present application in a Spannwellensiebmaschine Elongation or elasticity, since the whip effect damping element in this embodiment is the plastic bed formed in the clamping element, in which the Feinsiebmatte is poured.
• the attachment of Feinsiebmatte in plastic bed can be done for example by casting the Feinsiebmatten in plastic or for example by vulcanization or sticking.
• the receptacles are slot-shaped, whereby a particularly simple fastening of the fine mesh mats in the receptacle or in the plastic bed therein is possible.
• connection element and the fine mesh mat form an exchangeable screening mat unit.
• clamp In particular, in the case of an intended clamping element whose training may already have a corresponding with the mounting options, in particular the cross member, on the Spannwellensiebmaschine shape, so that a rapid yet secure attachment of Siebmattenhow to the tensioning shaft machine is possible.
• connection element is a preferably separate separate elastic element attached to the associated first cross member or associated second cross member.
• the Feinsiebmatte made of plastic fabric can be attached directly to the associated first cross member or associated second cross member.
• fastening means are provided according to claim 8, which connect the elastic element on the one hand with the Feinsiebmatte and on the other hand with the associated first cross member and the associated second cross member.
• the Feinsiebmatte made of plastic fabric itself acts as a connection element and the required elongation at break for use of Feinsiebmatte in Spannwellensiebmaschinen done by appropriate skewing of warp and weft with respect to the cross member.
• an additional attachment element for attaching the Feinsiebmatte to the cross members is no longer required and the Feinsiebmatten plastic fabric can be attached to the cross members in a conventional manner.
• the claims 12 to 15 relate to a screening mat unit for a Spannwellensiebmaschine with a
• the screen surface is formed as a Feinsiebmatte made of plastic fabric and the clamping element comprises a connection element, which has a greater elongation at break compared to Feinsiebmatte having.
• the immediate arrangement of serving as a damping element for the whip attachment element on the screen mat made of plastic fabric allows the use of fine mesh mats made of plastic fabric with correspondingly small mesh size of Spannwellensiebmaschinen, wherein connecting element and Feinsiebmatte form a replaceable unit that facilitates replacement of the entire Siebmatteniser on the Spannwellensiebmaschine ,
• the clamping element itself, which establishes the connection between Feinsiebmatte and the respective cross members, designed as a connection element with greater elongation at break.
• the clamping element has a, preferably slot-shaped, receptacle with a plastic bed, which serves as a connection element for the Feinsiebmatte made of plastic fabric and with which the Feinsiebmatte is connected, for example by pouring.
• Fig.l an axonometric view of a Spannwellensiebmaschine
• FIG. 5 shows a schematic side view of a screen mat unit in attached to cross members state
• FIG. 6 shows a plan view of a screening mat unit
• FIG. 8 shows a schematic side view of a screening mat unit in a state fastened to cross members
• FIG. 9 is a schematic side view of a screen mat in attached to a cross member state with a separate connection element
• FIG. 10 is a plan view of a screen mat unit with inclined shot or chain
• 11 is a plan view of a screen mat unit with inclined shot and chain
• Fig.l shows a preferred type of tensioning ⁇ screen machine 1 with a Siebwangen 3a, 3b having Siebkasten 3 as the first moving system which is supported on springs 15 against a fixed surface and a Sieve box 3 vibrated drive 16, which may be performed, for example, as a simple or Doppelunwuchtantrieb.
• the screen cheeks 3a, 3b are connected to each other via a plurality of mutually parallel first cross member forming Siebkastenquerées 2 together.
• a second moving system in the present case designed as a swing frame, which on the wire cheeks 3a, 3b and arranged on bars 18 mounted push rods 17 includes.
• the push rods 17 are connected to each other via parallel to each other and parallel to the Siebkastenqueranyn 2 arranged second cross member forming swing frame ⁇ cross member 4.
• the screen surfaces are constructed by individual screen mats 5, which are alternately attached to a swing frame cross member 4 and a Siebkastenquerthe 2.
• the swing frame is also amplified by the unbalanced by means of vibrating 16 vibrated screen box 3 vibrated. Due to the elastic mounting of the push rods 17 of the swing frame on the screen box 3 results in a fundamental vibration of the screen box 3 offset vibration of the swing frame.
• the screen mats 5 are alternately compressed and stretched or overstretched, whereby not only the screening of the screenings is accomplished, but also the formation of pinch is prevented. This in turn causes an optimal screening effect.
• the present embodiment shows a screening device with a screen plane. It goes without saying that the arrangement of several layers of sieves one above the other is possible and also common in tension wave screening machines.
• a plurality of push rods 17 are elastically mounted on the screen box 3, or more, extending in different planes swing frame cross member 4 on a push rod 17th
• the present oscillating system can also be made in banana design with continuously decreasing screen deck inclination.
• At least one of the screen mats is designed as a fine mesh mat 5 made of synthetic fabric which has at least one attachment element 6, 7, 8 with an associated swing frame cross member 4 and / or an associated screen box cross member 2 is connected, which connecting element 6,7,8 a, compared to the made of plastic fabric Feinsiebmatte 5, greater elongation at break.
• connection element and the fine mesh mat, preferably inseparable, are connected to one another.
• the second embodiment principle provides that the whip effect damping connection element on a corresponding Siebkastenquerities 2 or
• Oscillating frame cross member 4 arranged element whose elongation at break is inventively greater than that of the Feinsiebmatte.
• FIGS. 2, 3 and 4 each show exemplary embodiments which operate according to the first embodiment.
• FIG. 2 shows the schematic representation of a Feinsiebmatte 5 which is connected via a spring element 6 with a known clamping element 12, to which no further requirements are made than that it must be fastened to a cross member 2.4 of one of the two moving systems ,
• FIG. 3 shows a screening mat unit with a fine mesh mat 5 and a clamping element 10, which has a slot-like receptacle 11.
• a plastic bed 7 which is cast into the receptacle or otherwise secured therein.
• the ends of the plastic mesh fabric are embedded in the plastic bed 7.
• the clamping element 10 may in this case also be made of a material having a lower elongation at break, since the plastic bed 7 is present as a damping, elastic element with a corresponding elongation at break, which contributes to the fact that the occurring whip effect does not lead to the destruction of the plastic fabric of the fine mesh mat.
• FIG. 4 shows a further embodiment of the first embodiment.
• a clamping element 8 is cast directly with the Feinsiebmatte 5 and forms the connection element.
• the clamping element has the required elongation at break, which according to the invention must be higher than the elongation at break of the Feinsiebmatte 5 forming plastic fabric.
• the clamping elements 8, 10, 12 each have a special shape, which enables them to be securely and quickly clamped to the screen box cross members 2 or swing frame cross members 4, as shown in FIG.
• the clamping elements 8,10,12 have for this purpose a corresponding recess 19, with which they are plugged onto the Siebkastenqueranyn 2 and swing frame cross members 4.
• one or more bolts 25 or a bar 25 is provided so that the clamping elements 8,10,12 are immovably fixed to the Siebkastenquerryn 2 or swing frame cross members 4.
• FIGS. 2 to 4 are a possible embodiment variant. Of course, other embodiments are possible, which allow a secure attachment of Siebmatteniseren to the Siebkastenqueranyn 2 or swing frame cross members 4.
• FIG.7 Such an alternative embodiment of a clamping element, for example, Fig.7.
• the clamping element 20 is in contrast to the clamping elements 8,10 of 2, 3 formed flat.
• a fastening means 14 for example a screw, as can be seen from Figure 8.
• FIGS. 2 to 5 and FIGS. 7 and 8 show a fine mesh mat 5 according to the invention made of synthetic fabric, as shown in FIGS. 2 to 5 and FIGS. 7 and 8, in a plan view.
• the clamping element 8,10 with which the attachment to the Siebkastenqueranyn 2 or Schwingrahmenqueranyn 4 takes place, extending in the longitudinal direction of the Feinsiebmatte along the edge region thereof.
• connection element 13 is fixed as a preferably separate element on a screen box cross member 2 or swing frame cross member 4 via a fastening means 14, for example a screw.
• the fastening ⁇ means 14 also serves for direct fixing of the Feinsiebmatte 5, which in this case, no clamping is required to have at Siebkastenquerany 2 or swing frame crossbeams 4 is also a means of clamping between a clamping element 21 and 13, the connecting element In this way achieved very elastic connection of Feinsieb Structure of plastic fabric to the Siebkastenquerany 2 or swing frame cross member 4.
• FIGS. 10 and 11 show a plan view of a fine mesh mat 5 made of plastic fabric according to another preferred embodiment of the invention.
• the Siebkastenquerany 2 or swing frame cross member 4 are indicated schematically.
• the thread group of the fabric forming the chain 23 is, as can be seen in FIG. 10, inclined to the direction of the sieve 24 instead of parallel.
• the thread group forming the weft 22 is additionally arranged obliquely to the screen box cross members 2 or swing frame cross members 4. Due to the oblique arrangement, a higher elasticity of the plastic fabric is achieved in the sieve direction 24 and thus the elongation at break is increased.

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• Combined Means For Separation Of Solids (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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ID=54768031

Family Applications (1)

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Cited By (2)

Families Citing this family (4)

Citations (7)

• 2005
  • 2005-11-24 AT AT0080105U patent/AT8742U1/de not_active IP Right Cessation
• 2006
  • 2006-11-21 EP EP06830053.2A patent/EP1957210B1/de active Active
  • 2006-11-21 RU RU2008119321/03A patent/RU2428264C2/ru not_active IP Right Cessation
  • 2006-11-21 PL PL06830053T patent/PL1957210T3/pl unknown
  • 2006-11-21 WO PCT/EP2006/068704 patent/WO2007060155A1/de active Application Filing
  • 2006-11-21 AU AU2006316485A patent/AU2006316485C1/en not_active Ceased
  • 2006-11-21 ES ES06830053.2T patent/ES2553460T3/es active Active

Patent Citations (7)

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