WO2001012346A1 - Dispositif de criblage, procede de production d'un crible et crible pour dispositif de criblage - Google Patents

Dispositif de criblage, procede de production d'un crible et crible pour dispositif de criblage Download PDF

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Publication number
WO2001012346A1
WO2001012346A1 PCT/EP2000/007595 EP0007595W WO0112346A1 WO 2001012346 A1 WO2001012346 A1 WO 2001012346A1 EP 0007595 W EP0007595 W EP 0007595W WO 0112346 A1 WO0112346 A1 WO 0112346A1
Authority
WO
WIPO (PCT)
Prior art keywords
sieve
layers
screen
screening device
grooved
Prior art date
Application number
PCT/EP2000/007595
Other languages
German (de)
English (en)
Inventor
Job-Jorik Steinbeck
Original Assignee
Steinbeck Job Jorik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steinbeck Job Jorik filed Critical Steinbeck Job Jorik
Priority to AU66994/00A priority Critical patent/AU6699400A/en
Priority to AT00954589T priority patent/ATE281248T1/de
Priority to DE50008521T priority patent/DE50008521D1/de
Priority to EP00954589A priority patent/EP1202821B1/fr
Publication of WO2001012346A1 publication Critical patent/WO2001012346A1/fr

Links

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
    • B07B1/4663—Multi-layer screening surfaces
    • 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
    • B07B1/469—Perforated sheet-like material

Definitions

  • Sie device method for producing a sieve and sieve for a sieve device
  • the invention relates to a sieve device for cleaning fluids, sludges or the like, hereinafter referred to as sludge, by separating out larger particles, a sieve and a method for producing a sieve.
  • the invention has for its object to improve the separation of larger particles from the sludge.
  • CONFIRMATION OPIE This object is achieved by the invention defined in claim 1. Developments of the invention are described in the subclaims. A method for producing a screen for a screening device according to claim 1 is defined in claim 14. Further developments of this method are described in the subclaims. A screen for a screening device according to claim 1 is defined in claim 18 and a further development is described in claim 19. It is achieved by the invention that the sieved particles of larger diameter are largely dry. This is essentially due to the fact that the coarse particles are held on the sieve for a long time and the full width of the sieve is used.
  • the invention in a sieve device for cleaning sludge by separating out larger particles is that the sieve is provided with grooves, that the grooves of the sieve are arranged transversely to the direction of flow of the sludge and that the grooves have a sawtooth have a shaped profile with a rising slope in the flow direction.
  • the sieve which is designed as a grooved sieve, is moved back and forth mechanically, electrically and / or magnetically in the direction of flow, so that the larger sludge particles, which do not flow together with the sludge through the sieve into a container underneath, are moved in the longitudinal direction of the sieve and over it Edge to be ejected.
  • the shaking movement can also have lateral components, for example oval or elliptical.
  • the sieve which is interchangeably arranged in the sieving device, has a multilayer structure, the lower layers each having larger sieve openings than the respective upper layers.
  • the bottom layer with the coarsest openings is so stable that it can support the top layers with the openings getting smaller and smaller.
  • Several layers arranged one above the other in this way are glued and / or welded together. Increased strength is achieved if the upper, not very strong layers are prestressed before they are joined to the lowest, relatively stable layer of fabric, provided with the sawtooth-shaped profile and with an essentially flat perforated plate Unit connected, in particular glued.
  • a grooved sieve unit designed in this way is interchangeably connected in the sieving device by hooks, bolts, airbags or the like, or inserted as a cassette in it and is moved back and forth or shaken in the sieving device by a vibrator, motor or the like arranged there.
  • the grooved screen unit is preferably rectangular, but can also be circular in shape or have another shape predetermined for the screen device used in each case.
  • a method for producing such a grooved sieve first several fabrics made of steel or synthetic wires with predetermined different mesh sizes are put together. Such fabrics are commercially available and are usually supplied in roll form.
  • each upper layer has an ever smaller mesh size, for example more than 100 mesh.
  • the layers arranged one above the other are glued or welded to form a unit and the unit connected to one another is shaped, in particular pressed, into a sawtooth shape.
  • the unit thus formed is placed on a flat perforated plate made of steel, aluminum or plastic and connected to it, in particular glued.
  • the fabric and / or the perforated plate can be coated with a polyamide. When pressed under the influence of heat, the polyamide softens, penetrates the fabric parts assigned to it and in this way connects the individual layers to form a stable unit.
  • the surface of the screen in the area of the adhesive points is covered with an aluminum foil in an experimentally tested example.
  • a preferred application example is the cleaning of drilling muds.
  • Screening devices according to the invention can also be used in production processes are used in industry, for example to avoid granular particles in the film production.
  • Figure 1 is a schematic representation of the method according to the invention for use in borehole systems
  • Figure 1 a shows a detail from Figure 1;
  • FIG. 2 shows a screening device for separating the drilling mud into coarser particles and remaining drilling mud with smaller particles with a flat plate with sawtooth-shaped layers arranged thereon and with coarser particles visible thereon;
  • FIG. 3 shows a top view of the illustration in FIG. 2;
  • Figure 4 is a plan view of one of the lower layers of the grooved screen
  • FIG. 5 shows a simplified perspective exploded view of the layers of the grooved sieve before the profiling
  • Figure 6 shows a method for producing the grooved screen.
  • FIG. 1 a borehole system with a borehole 1 is shown in section, in which a tubular drill string 2 protrudes, which carries a drill bit for producing the bore 1 to its front end on the one hand and, on the other hand, flushing liquid leads to the drill bit.
  • the loosened drilling mud is conveyed upwards on the outer wall of the tubular string 2 and conveyed into a container 3 and from there to a screening device 4.
  • This sieve device 4 essentially contains one or more sieves 5, which are moved back and forth by a vibrator 6, preferably in the direction of flow of the drilling mud being conveyed. Lateral components are also possible because oval or elliptical vibrations are advantageous.
  • a collecting container 8 arranged underneath catches the mud with fine particles, while larger particles 9 remaining on the sieve are conveyed by the vibrating mechanism over the edge of the sieving device 4 into a further collecting container 10, which is used for later disposal of the coarse particles.
  • the screened sludge is returned to the flushing circuit of the drill pipe 2 by means of a pump 11.
  • the fine particles may or may not be added, as desired.
  • the sieving device 4 is arranged such that sieves 5 lie one behind the other in the flow direction 57 of the sludge emerging from the container 30.
  • a sieve 5 is shown.
  • the sludge thus flows from the container 3 in the flow direction 57 onto the sieve in such a way that the entire width of the sieve is used as evenly as possible.
  • the sieve 5 is provided with one or more grooves 58, 59 sawtooth-shaped profile arranged transversely to the flow direction 57 and is thereby inhibited in its conveying speed. All particles that are smaller than the mesh size 511 of the upper layer 51, which acts as a sieve 5, pass through the sieve 5, hereinafter referred to as a grooved sieve 5, and are collected by the container 8.
  • the container 8 can consist of several sub-containers in which the sludge is moved more or less.
  • a pump 11 feeds the mud to the drill pipe 2 and returns to the borehole 1 via the pipe 2. There, the sludge can deliberately reduce gas outbreaks due to its weight or strengthen the walls of borehole 1.
  • the grooved sieve 5 vibrated by the vibrator or motor 6 now transports the particles 9, which are larger than the mesh size 511 of the upper layer 51, in the flow direction 57 until they fall into the further container 10 for these particles 9.
  • the larger particles 9 are conveyed upward by the flank of the sawtooth in the flow direction 57 by means of the vibrating mechanism, but initially roll or roll back because of their own weight and the incline or incline.
  • the Larger particles 9 largely freed of sludge residues of smaller grain size and liquid and fall relatively dry into the container 10.
  • the sludge with its particles of small grain size is largely returned to the borehole 1, so that no or a few residues remain above ground.
  • the particles 9 large grain size can be easily disposed of in this way. They form a so-called special waste, which has a reduced volume because of the small grain size particles largely flowing back into the container 8 with the liquid and thus causes lower costs than was previously the case.
  • the screening device 4 is shown with the inserted screen 5 in a perspective view.
  • the vibrator 6 is arranged here above the sieve 5 in order to illustrate the resilient mounting 61 of the sieve 5 relative to the container 8.
  • the overflow 31 of the container 3 to the sieve 5 is so wide that its width corresponds approximately to that of the sieve 5.
  • the drilling mud flows through this overflow with all particles at a relatively high speed.
  • FIG. 2 shows the basic structure of an essential part of the grooved sieve 5 shown in FIG. 1.
  • the grooved sieve 5 has a plurality of layers 51, 52, 53 of a fabric woven from steel or synthetic wires, for example commercially available, which glues together at least in the area of their edges or are welded and pressed in a sawtooth shape.
  • the interconnected sawtooth-shaped layers 51, 52, 53 are placed on a flat perforated plate 54 made of steel, aluminum, plastic or other stable materials and connected to this plate 54, for example glued or welded.
  • the perforated plate 54 has openings 55, the clear width of which is, for example, 2x2 m / m.
  • the struts between the holes are about 3-4 m / m.
  • the plate 54 is provided with adhesive 56 at predetermined locations before the unit 51, 52, 53 is supported.
  • the plate 54 can also be coated with a polyamide or other heat-soft material.
  • the polyamide penetrates through the fabric when heated connects the layers firmly after cooling, the perforated plate 54 and the sawtooth floors touching across the entire width. Vertical profile parts are closed or blocked at the ends of the profiles.
  • FIG. 3 shows a top view of the grooved screen 5 according to FIG. 2. It is essentially rectangular, but can also be round or circular. An arrow 57 indicates the flow direction of the sludge, the large areas the rising surface 58 and the vertical stripes the short falling flanks 59 of the sawtooth profile. In practice, the sieve openings are also rectangular, but the borders are woven and not flat.
  • FIG. 4 shows a top view of a layer 52 arranged below the layer 51 in FIG. 3 with a significantly larger sieve opening 521.
  • FIG. 5 shows a so-called exploded view of the unit 5 with its layers 51, 52, 53 prior to its profiling, for example pressing into a sawtooth shape.
  • the top layer has relatively narrow meshes 511, while the layers 52, 53 underneath each have larger meshes 521, 531 from layer to layer. This means that each layer lying below forms a stability reinforcement for the layer lying above and no obstacle for the sludge passing through.
  • the unit consisting of three layers 51, 52, 53 is a stable unit due to the lower layer with a coarse mesh size, which can be pressed into a sawtooth shape after gluing and / or welding. If necessary, the number of layers can be selected to be smaller or larger.
  • This sawtooth-shaped unit 5 of layers 51, 52, 53 already profiled with one another is now placed on the stable perforated plate 54 and glued or welded to it.
  • the unit stabilized in this way represents an exchange unit, a screen covering for the screen device 4 in FIG. 1. It can be attached in a hook shape or inserted as a cassette in a corresponding opening of the screen device.
  • correction pieces can be used to compensate for the differences.
  • sieve devices 4 for a plurality of sieves 5 grooved sieves according to the invention can be combined with homogeneous sieves and / or sieves with grooves running in the direction of flight.
  • Figure 6 shows a method for producing the grooved screen in several steps.
  • the top grooved screen 51 is cut from steel or synthetic wires, which has a relatively small cross section.
  • the cross section of these wires is dimensioned such that they cannot be worn away too quickly by the particles 9. However, they do not have to be so strong that they alone have to carry the weight of the mud.
  • the wires had a diameter of 0.3 mm.
  • the layers 52, 53 lying under the sieve 51 are produced with a larger mesh size, the bottom layer being so stable that it is also able to do so to carry the top sieves and the weight of the mud.
  • the wire diameter can be chosen larger.
  • the unit 5 with the layers 51, 52, 53 placed one above the other is first glued or welded to one another, for example by pressing plastic or similar material through the meshes of the fabric layers 51, 52, 53 by hot pressing.
  • the individual layers can also be connected to one another by placing a sample of an adhesive on a non-adhesive base on which the individual layers are arranged.
  • This adhesive is preferably arranged in the region of the support points of the unit 51, 52, 53 and / or the edge regions on the perforated plate 54. In this case, the adhesive penetrates the mesh openings and forms the bond.
  • the layers above the coarse-mesh layer are prestressed.
  • the unit is pressed into a sawtooth profile with a short, almost vertical steep flank and a long rising flank.
  • the plate made of steel or plastic serving as a base is dimensioned such that it is able to make the grooved sieve 5 usable in a sieving machine and to fasten it like a cassette shape by means of hooks, bolts, air cushions or the like.
  • the base plate and thus the layers lying on it are then vibrated by a vibrator, motor or the like, which essentially cause a flow in the flow direction 57.
  • the grooved sieve 5 is inserted into the receiving opening of the sieving device in such a way that the long rising flanks face the sludge feed source.
  • Collection container larger particles

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

L'invention concerne un dispositif de criblage utilisé pour l'épuration de boues (7), telles que des boues de forage, par séparation de particules de grande taille au moyen d'un crible (5). L'invention réside dans le fait que l'on utilise un crible présentant des rainures disposées transversalement par rapport au sens d'écoulement de la boue et que ces rainures présentent un profil en dents de scie dont un flanc (58) est ascendant dans le sens d'écoulement de la boue. Un crible et son procédé de production sont également décrits.
PCT/EP2000/007595 1999-08-11 2000-08-04 Dispositif de criblage, procede de production d'un crible et crible pour dispositif de criblage WO2001012346A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU66994/00A AU6699400A (en) 1999-08-11 2000-08-04 Sieve device, method for the production of a sieve and sieve for a sieve device
AT00954589T ATE281248T1 (de) 1999-08-11 2000-08-04 Siebeinrichtung, verfahren zur herstellung eines siebes und sieb für eine siebeinrichtung
DE50008521T DE50008521D1 (de) 1999-08-11 2000-08-04 Siebeinrichtung, verfahren zur herstellung eines siebes und sieb für eine siebeinrichtung
EP00954589A EP1202821B1 (fr) 1999-08-11 2000-08-04 Dispositif de criblage, procede de production d'un crible et crible pour dispositif de criblage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19937338A DE19937338A1 (de) 1999-08-11 1999-08-11 Siebeinrichtung, Verfahren zur Herstellung eines Siebes und Sieb für eine Siebeinrichtung
DE19937338.8 1999-08-11

Publications (1)

Publication Number Publication Date
WO2001012346A1 true WO2001012346A1 (fr) 2001-02-22

Family

ID=7917573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/007595 WO2001012346A1 (fr) 1999-08-11 2000-08-04 Dispositif de criblage, procede de production d'un crible et crible pour dispositif de criblage

Country Status (5)

Country Link
EP (1) EP1202821B1 (fr)
AT (1) ATE281248T1 (fr)
AU (1) AU6699400A (fr)
DE (2) DE19937338A1 (fr)
WO (1) WO2001012346A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111644376A (zh) * 2020-06-19 2020-09-11 长江师范学院 一种方便拆装的电极回收筛分设备壳体结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015103583A1 (de) * 2015-03-11 2016-09-15 Max Wild Gmbh Verfahren zur Aufbereitung und Wiederverwertung von Bohrschlamm

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827169A (en) * 1954-12-07 1958-03-18 Internat Pulp Products Inc Screen plate
WO1994015723A1 (fr) * 1993-01-13 1994-07-21 Derrick Manufacturing Corporation Crible pour cribleur a vibration et procede de fabrication d'un tel crible
US5417858A (en) * 1993-01-13 1995-05-23 Derrick Manufacturing Corporation Screen assembly for vibrating screening machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100132A3 (fr) * 1982-07-24 1984-08-22 Derek Parnaby Cyclones International Limited Tamis de déshydratation et de compactage
US5551575A (en) * 1994-07-29 1996-09-03 Environmental Procedures, Inc. Shale shaker screens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827169A (en) * 1954-12-07 1958-03-18 Internat Pulp Products Inc Screen plate
WO1994015723A1 (fr) * 1993-01-13 1994-07-21 Derrick Manufacturing Corporation Crible pour cribleur a vibration et procede de fabrication d'un tel crible
US5417858A (en) * 1993-01-13 1995-05-23 Derrick Manufacturing Corporation Screen assembly for vibrating screening machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111644376A (zh) * 2020-06-19 2020-09-11 长江师范学院 一种方便拆装的电极回收筛分设备壳体结构

Also Published As

Publication number Publication date
AU6699400A (en) 2001-03-13
DE50008521D1 (de) 2004-12-09
ATE281248T1 (de) 2004-11-15
DE19937338A1 (de) 2001-02-15
EP1202821B1 (fr) 2004-11-03
EP1202821A1 (fr) 2002-05-08

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