CA2992665C - Screen segment comprising wear-resistant elements - Google Patents
Screen segment comprising wear-resistant elements Download PDFInfo
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- CA2992665C CA2992665C CA2992665A CA2992665A CA2992665C CA 2992665 C CA2992665 C CA 2992665C CA 2992665 A CA2992665 A CA 2992665A CA 2992665 A CA2992665 A CA 2992665A CA 2992665 C CA2992665 C CA 2992665C
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- screen
- antiwear
- segment
- base plate
- screen segment
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- 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
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- Combined Means For Separation Of Solids (AREA)
Abstract
A screen segment of a screen device for separating or sorting feedstock, in particular mineral material to be crushed such as tar sand, into at least two grain size fractions, comprises, according to a first aspect, a substantially screen-shaped base plate on which at least one plate-shaped wear-resistant element is arranged.
Description
Screen segment comprising wear-resistant elements The invention relates to a screen segment and to a screen device with antiwear elements.
Background To process raw materials, in particular mineral materials which have been or are to be crushed, such as for example oil sand, coal and ores, such as iron ore and nickel ore, screen devices are used which have a plurality of screen segments io which classify the material to be comminuted or already comminuted into at least two grain size fractions by means of vibration. Such a screen device is described for example in DE102007034512B3.
The materials to be classified frequently comprise materials with elevated hardness and which are highly abrasive. As a result, severe wear occurs to the surface of the is screen segments, which means very short maintenance intervals and elevated treatment costs for the screen segments.
Summary Certain exemplary embodiments provide a screen segment of a screen device for 20 separating or classifying charging stock, which have been or are to be crushed into at least two grain size fractions, the screen segment comprising a substantially screen-shaped base plate, wherein a plurality of plate-shaped antiwear elements are arranged on the base plate, wherein a plurality of support plates are affixed next to one another on the base plate and the plurality of plate-shaped antiwear 25 elements are affixed to each of the support plates.
i Date Recue/Date Received 2020-06-22 On this basis, it is an object of the present invention to provide a screen segment of a screen device which has elevated wear resistance when used to classify highly abrasive materials and is at the same time inexpensive and simple to produce.
la According to a first aspect, a screen segment of a screen device for separating or classifying charging stock, in particular mineral materials which have been or are to be crushed, such as oil sand, into at least two grain size fractions comprises a substantially screen-shaped base plate, wherein at least one plate-shaped antiwear element is arranged on the base plate.
A substantially screen-shaped base plate should be understood to mean a base plate which comprises a plurality of screen passages, through which material to be classified may fall. The screen passages are preferably of uniform size, such that from a specific grain size material does not fall through the screen passages, resulting in classification of the material into at least two grain sizes. The screen passages are for example round or rectangular and arranged in rows relative to one another, such that a maximally large number of screen passages are arranged next to one another. The base plate is in particular plate-shaped with a rectangular base area and preferably comprises at least one attachment region which does not comprise any screen passages. The attachment region serves for attaching the base plate for example to a screen device support. Furthermore, the base plate comprises a classification region, in which the screen passages are arranged.
The plate-shaped antiwear element is made from a material with a higher hardness and higher wear resistance than the screen segment base plate. The antiwear elements are preferably rectangular, in particular square, so simplifying production and arrangement of the antiwear elements on the base plate. The at least one antiwear element for example comprises at least one screen passage, such that from a specific grain size material falls through the at least one screen passage.
At least one plate-shaped antiwear element arranged on the base plate enables an antiwear layer of uniform thickness over the base plate. In contrast for example to an overlay, in particular an overlay welding, on the base plate, plate-shaped antiwear elements offer the advantage of elevated thickness of the more wear-resistant material. The thickness of the plate-shaped antiwear elements may be
Background To process raw materials, in particular mineral materials which have been or are to be crushed, such as for example oil sand, coal and ores, such as iron ore and nickel ore, screen devices are used which have a plurality of screen segments io which classify the material to be comminuted or already comminuted into at least two grain size fractions by means of vibration. Such a screen device is described for example in DE102007034512B3.
The materials to be classified frequently comprise materials with elevated hardness and which are highly abrasive. As a result, severe wear occurs to the surface of the is screen segments, which means very short maintenance intervals and elevated treatment costs for the screen segments.
Summary Certain exemplary embodiments provide a screen segment of a screen device for 20 separating or classifying charging stock, which have been or are to be crushed into at least two grain size fractions, the screen segment comprising a substantially screen-shaped base plate, wherein a plurality of plate-shaped antiwear elements are arranged on the base plate, wherein a plurality of support plates are affixed next to one another on the base plate and the plurality of plate-shaped antiwear 25 elements are affixed to each of the support plates.
i Date Recue/Date Received 2020-06-22 On this basis, it is an object of the present invention to provide a screen segment of a screen device which has elevated wear resistance when used to classify highly abrasive materials and is at the same time inexpensive and simple to produce.
la According to a first aspect, a screen segment of a screen device for separating or classifying charging stock, in particular mineral materials which have been or are to be crushed, such as oil sand, into at least two grain size fractions comprises a substantially screen-shaped base plate, wherein at least one plate-shaped antiwear element is arranged on the base plate.
A substantially screen-shaped base plate should be understood to mean a base plate which comprises a plurality of screen passages, through which material to be classified may fall. The screen passages are preferably of uniform size, such that from a specific grain size material does not fall through the screen passages, resulting in classification of the material into at least two grain sizes. The screen passages are for example round or rectangular and arranged in rows relative to one another, such that a maximally large number of screen passages are arranged next to one another. The base plate is in particular plate-shaped with a rectangular base area and preferably comprises at least one attachment region which does not comprise any screen passages. The attachment region serves for attaching the base plate for example to a screen device support. Furthermore, the base plate comprises a classification region, in which the screen passages are arranged.
The plate-shaped antiwear element is made from a material with a higher hardness and higher wear resistance than the screen segment base plate. The antiwear elements are preferably rectangular, in particular square, so simplifying production and arrangement of the antiwear elements on the base plate. The at least one antiwear element for example comprises at least one screen passage, such that from a specific grain size material falls through the at least one screen passage.
At least one plate-shaped antiwear element arranged on the base plate enables an antiwear layer of uniform thickness over the base plate. In contrast for example to an overlay, in particular an overlay welding, on the base plate, plate-shaped antiwear elements offer the advantage of elevated thickness of the more wear-resistant material. The thickness of the plate-shaped antiwear elements may be
2 substantially freely selected, depending on application, and is not restricted the material to be applied. The at least one antiwear element is formed for example of a hard metal, ceramic or polyurethane or of a composite of the stated materials and steel.
A plurality of antiwear elements are arranged on the base plate. In particular, the entire surface which comes into contact with the material to be classified is provided with antiwear elements, which are arranged next to one another, such that no or only a very slight gap is formed between adjacent antiwear elements.
The antiwear elements preferably have the same shape and size, whereby the 1.0 .. arrangement and production of the antiwear elements is simplified.
According to a first embodiment, the at least one antiwear element is made from a hard metal. In particular, the at least one plate-shaped antiwear element comprises sintered tungsten carbide. Hard metal, in particular sintered tungsten carbide plates, offers more cost-effective wear protection of the screen segments.
According to one further embodiment, the at least one antiwear element exhibits a thickness of around 1.5 mm ¨ 40 mm, preferably 20 mm ¨ 30 mm, in particular 8 mm ¨ 15 mm.
According to one further embodiment, the at least one antiwear element comprises a coating. The coating preferably comprises an anticorrosion coating or a nonstick coating, such as for example a Teflon layer or a ceramic layer for additional wear protection. Such a coating increases the service life of the antiwear elements and extends utilization times for the screen elements.
According to one further embodiment, at least one support plate is attached to the base plate and the at least one antiwear element is attached to the support plate.
.. The support plate in particular comprises a rectangular base area and is smaller than the base plate. Fifteen support plates are for example arranged on the base plate of a screen segment, in three rows each comprising five support plates
A plurality of antiwear elements are arranged on the base plate. In particular, the entire surface which comes into contact with the material to be classified is provided with antiwear elements, which are arranged next to one another, such that no or only a very slight gap is formed between adjacent antiwear elements.
The antiwear elements preferably have the same shape and size, whereby the 1.0 .. arrangement and production of the antiwear elements is simplified.
According to a first embodiment, the at least one antiwear element is made from a hard metal. In particular, the at least one plate-shaped antiwear element comprises sintered tungsten carbide. Hard metal, in particular sintered tungsten carbide plates, offers more cost-effective wear protection of the screen segments.
According to one further embodiment, the at least one antiwear element exhibits a thickness of around 1.5 mm ¨ 40 mm, preferably 20 mm ¨ 30 mm, in particular 8 mm ¨ 15 mm.
According to one further embodiment, the at least one antiwear element comprises a coating. The coating preferably comprises an anticorrosion coating or a nonstick coating, such as for example a Teflon layer or a ceramic layer for additional wear protection. Such a coating increases the service life of the antiwear elements and extends utilization times for the screen elements.
According to one further embodiment, at least one support plate is attached to the base plate and the at least one antiwear element is attached to the support plate.
.. The support plate in particular comprises a rectangular base area and is smaller than the base plate. Fifteen support plates are for example arranged on the base plate of a screen segment, in three rows each comprising five support plates
3 arranged next to one another. The entire surface of the base plate is preferably covered with a plurality of support plates, such that the material to be classified does not come into contact with the base plate and wear of the base plate is reliably avoided. In particular, a plurality of antiwear elements is arranged on each support plate.
According to one further embodiment, the at least one antiwear element is joined to the support plate by substance-to-substance bonding. A bonded substance-to-substance joint should be understood to mean one produced in particular by soldering, adhesion or welding of the antiwear elements to the base plate. A
bonded substance-to-substance joint between the antiwear elements and the support plate offers a simple way of attaching the antiwear elements to the support plate. It is thereby further possible to apply antiwear elements with a thickness of in particular up to 50 mm to the support plate and thus significantly to improve wear protection. Bonded, in particular detachable attachment furthermore offers the .. possibility of removing individual antiwear elements from the support plate, for example in the case of uneven wear of the individual antiwear elements, and replacing them. This allows a considerable cost saving, since it is not necessary to replace the entire support plate or base plate in the event of wear to individual antiwear elements.
According to one further embodiment, each antiwear element is affixed in each case to one support plate. In particular, the surface of the antiwear element corresponds to that of the support plate, such that the antiwear element covers the entire support plate. The antiwear element preferably comprises a plurality of screen passages. In particular, the antiwear element is joined detachably to the support plate, for example screwed, such that simple replacement of the antiwear element is possible.
According to a further embodiment, the support plate is affixed detachably to the base plate. For example, the support plate is attached to the base plate by means
According to one further embodiment, the at least one antiwear element is joined to the support plate by substance-to-substance bonding. A bonded substance-to-substance joint should be understood to mean one produced in particular by soldering, adhesion or welding of the antiwear elements to the base plate. A
bonded substance-to-substance joint between the antiwear elements and the support plate offers a simple way of attaching the antiwear elements to the support plate. It is thereby further possible to apply antiwear elements with a thickness of in particular up to 50 mm to the support plate and thus significantly to improve wear protection. Bonded, in particular detachable attachment furthermore offers the .. possibility of removing individual antiwear elements from the support plate, for example in the case of uneven wear of the individual antiwear elements, and replacing them. This allows a considerable cost saving, since it is not necessary to replace the entire support plate or base plate in the event of wear to individual antiwear elements.
According to one further embodiment, each antiwear element is affixed in each case to one support plate. In particular, the surface of the antiwear element corresponds to that of the support plate, such that the antiwear element covers the entire support plate. The antiwear element preferably comprises a plurality of screen passages. In particular, the antiwear element is joined detachably to the support plate, for example screwed, such that simple replacement of the antiwear element is possible.
According to a further embodiment, the support plate is affixed detachably to the base plate. For example, the support plate is attached to the base plate by means
4 of screws, soldering, adhesion or welding. Attaching the support plate in particular by means of screws, soldering or adhesion makes affixing the support plate to the base plate simple and quick. Furthermore, affixing the support plate detachably to the base plate makes the support plate easily replaceable in the event of wear to the antiwear elements affixed to the support plate. This enables a considerable cost saving, since individual support plates may be replaced, for example in the event of uneven wear, and it is not necessary to replace the entire screen segment.
According to one further embodiment, a plurality of support plates are affixed next to one another on the base plate and a plurality of antiwear elements are affixed to each of the support plates. In particular, the entire surface of the base plate facing the material to be classified is covered with support plates, wherein the entire surface of the support plates facing the material to be classified is covered with antiwear elements. This allows reliable wear protection of the screen segment.
According to one further embodiment, the at least one support plate is configured as a screen. For example, at least one region of the support plate is provided with screen passages, which are in particular of rectangular configuration and are arranged aligned with the screen passages in the base plate. Support plates which are affixed in the classification region of the base plate in particular comprise a plurality of screen passages arranged in rows next to one another.
According to one further embodiment, the at least one support plate is made from steel, in particular from a high-temperature steel. This provides the support plates with high temperature resistance, wherein use of the screen segment to classify hot materials with a temperature of for example up to 600 degrees Celsius is also possible. The base plate is in particular also made from a high-temperature steel.
According to one further embodiment, the at least one support plate is made at least in part of an elastomer. In particular, the antiwear elements are vulcanized
According to one further embodiment, a plurality of support plates are affixed next to one another on the base plate and a plurality of antiwear elements are affixed to each of the support plates. In particular, the entire surface of the base plate facing the material to be classified is covered with support plates, wherein the entire surface of the support plates facing the material to be classified is covered with antiwear elements. This allows reliable wear protection of the screen segment.
According to one further embodiment, the at least one support plate is configured as a screen. For example, at least one region of the support plate is provided with screen passages, which are in particular of rectangular configuration and are arranged aligned with the screen passages in the base plate. Support plates which are affixed in the classification region of the base plate in particular comprise a plurality of screen passages arranged in rows next to one another.
According to one further embodiment, the at least one support plate is made from steel, in particular from a high-temperature steel. This provides the support plates with high temperature resistance, wherein use of the screen segment to classify hot materials with a temperature of for example up to 600 degrees Celsius is also possible. The base plate is in particular also made from a high-temperature steel.
According to one further embodiment, the at least one support plate is made at least in part of an elastomer. In particular, the antiwear elements are vulcanized
5 onto the support plate made from an elastomer. The support plate is for example made from a steel plate with an elastomer layer affixed thereto.
According to one further embodiment of the invention, the at least one antiwear element is joined to the base plate by substance-to-substance bonding. The antiwear elements are preferably attached directly to the base plate, wherein a support plate arranged therebetween may be dispensed with. This enables simple and inexpensive production of the screen segments.
According to one further embodiment, the antiwear elements are arranged spaced from one another, such that a gap is formed between adjacent antiwear elements.
Such a gap between two adjacent antiwear elements allows a for example temperature-related change to the size of the support plate and/or the base plate, without stresses arising between adjacent antiwear elements. Furthermore, material is saved by such an arrangement of the antiwear elements.
The invention further comprises a screen device, which comprises at least one screen segment according to one of the above-described embodiments. A screen device further comprises at least one vibration exciter, which is connected to the at least one screen segment in order to move the latter in a vibratory manner.
The screen segments are for example arranged next to one another on a support of the screen device. The screen device preferably comprises a plurality of screen segments arranged in rows next to one another. The screen segments are in particular affixed in such a way that the screen device comprises a surface inclined relative to the horizontal, for example at an angle of 5-200. This allows optimum classification of material charged onto the surface of the screen device.
According to one embodiment, the screen device comprises a plurality of screen segments, wherein the size of the screen passages in the screen segments differs over the length of the screen device. In particular, the screen device comprises smaller screen passages at one end thereof, preferably at the end at which the material to be classified is charged onto the screen device, than at the opposite
According to one further embodiment of the invention, the at least one antiwear element is joined to the base plate by substance-to-substance bonding. The antiwear elements are preferably attached directly to the base plate, wherein a support plate arranged therebetween may be dispensed with. This enables simple and inexpensive production of the screen segments.
According to one further embodiment, the antiwear elements are arranged spaced from one another, such that a gap is formed between adjacent antiwear elements.
Such a gap between two adjacent antiwear elements allows a for example temperature-related change to the size of the support plate and/or the base plate, without stresses arising between adjacent antiwear elements. Furthermore, material is saved by such an arrangement of the antiwear elements.
The invention further comprises a screen device, which comprises at least one screen segment according to one of the above-described embodiments. A screen device further comprises at least one vibration exciter, which is connected to the at least one screen segment in order to move the latter in a vibratory manner.
The screen segments are for example arranged next to one another on a support of the screen device. The screen device preferably comprises a plurality of screen segments arranged in rows next to one another. The screen segments are in particular affixed in such a way that the screen device comprises a surface inclined relative to the horizontal, for example at an angle of 5-200. This allows optimum classification of material charged onto the surface of the screen device.
According to one embodiment, the screen device comprises a plurality of screen segments, wherein the size of the screen passages in the screen segments differs over the length of the screen device. In particular, the screen device comprises smaller screen passages at one end thereof, preferably at the end at which the material to be classified is charged onto the screen device, than at the opposite
6 end of the screen device. The screen passages preferably increase in size over the length of the screen device from the charging end to the opposite end of the screen device. This enables efficient classification of the charged material into a plurality of different grain sizes, wherein the coarse material is screened out at the charging end of the screen device, with material of a smaller grain size being screened out over the length of the screen device. In particular, the screen device comprises screen passages of a size ranging from 30 x 30 mm to 150 x 150 mm.
Preferably, the thickness of the antiwear elements varies over the length of the screen device. For example, the antiwear elements exhibit a large thickness of around 8 mm to 40 mm in the regions in which the screen device comprises screen passages of a small size, wherein antiwear elements exhibit a small thickness of around 1.5 mm to 30 mm in a region in which the screen device comprises large screen passages.
.. Preferred exemplary embodiments of the invention The invention is explained in greater detail below with the aid of an exemplary embodiment and with reference to the appended figures.
Fig. 1 shows a perspective front view of a schematic representation of a screen segment of a screen device according to one exemplary embodiment.
Fig. 2 shows a perspective rear view of a schematic representation of a screen segment of a screen device according to the exemplary embodiment of fig.1.
Fig. 3 shows a screen device with a plurality of screen segments according to figs. 1 and 2.
Preferably, the thickness of the antiwear elements varies over the length of the screen device. For example, the antiwear elements exhibit a large thickness of around 8 mm to 40 mm in the regions in which the screen device comprises screen passages of a small size, wherein antiwear elements exhibit a small thickness of around 1.5 mm to 30 mm in a region in which the screen device comprises large screen passages.
.. Preferred exemplary embodiments of the invention The invention is explained in greater detail below with the aid of an exemplary embodiment and with reference to the appended figures.
Fig. 1 shows a perspective front view of a schematic representation of a screen segment of a screen device according to one exemplary embodiment.
Fig. 2 shows a perspective rear view of a schematic representation of a screen segment of a screen device according to the exemplary embodiment of fig.1.
Fig. 3 shows a screen device with a plurality of screen segments according to figs. 1 and 2.
7 =
Fig. 4 shows a perspective front view of a schematic representation of a screen segment of a screen device according to one further exemplary embodiment.
Fig. 5 shows a perspective rear view of a schematic representation of a screen segment of a screen device according to the exemplary embodiment of fig.
4.
Fig. 1 shows a screen segment 10 of a screen device 38 shown in fig. 3. The screen segment 10 comprises a base plate 12 which is plate-shaped with a rectangular base area. The base plate comprises two mutually opposing lateral attachment regions 32, 34 and a classification region 36 arranged between the attachment regions 32, 34. The attachment regions 32, 34 extend along opposing sides of the base plate and exhibit a width of around a fifth of the total width of the base plate 12. In fig. 1 the attachment regions 32, 34 are each provided with four holes 14, which are arranged spaced evenly from one another over each attachment region 32, 34. The attachment regions 32, 34 serve for attaching the base plate for example to a support, not shown, of a screen device 38. The classification region 36 of the base plate 12 comprises a plurality of screen passages 20 in the base plate. The screen passages 20 are rectangular, in particular square, and arranged in rows adjacent to one another. The classification region 36 shown in figure 1 comprises by way of example 54 screen passages 20, wherein in each case six screen passages are arranged next to one another in a row of screen passages 20 running from the first attachment region 32 to the second attachment region 34. In total, the classification region 36 of the screen segment 10 comprises nine parallel rows of screen passages 20. The base plate 12 is for example made from steel.
A plurality of substantially rectangular and plate-shaped support plates 16 are affixed to the base plate 12. The support plates 16 are arranged in such a way on
Fig. 4 shows a perspective front view of a schematic representation of a screen segment of a screen device according to one further exemplary embodiment.
Fig. 5 shows a perspective rear view of a schematic representation of a screen segment of a screen device according to the exemplary embodiment of fig.
4.
Fig. 1 shows a screen segment 10 of a screen device 38 shown in fig. 3. The screen segment 10 comprises a base plate 12 which is plate-shaped with a rectangular base area. The base plate comprises two mutually opposing lateral attachment regions 32, 34 and a classification region 36 arranged between the attachment regions 32, 34. The attachment regions 32, 34 extend along opposing sides of the base plate and exhibit a width of around a fifth of the total width of the base plate 12. In fig. 1 the attachment regions 32, 34 are each provided with four holes 14, which are arranged spaced evenly from one another over each attachment region 32, 34. The attachment regions 32, 34 serve for attaching the base plate for example to a support, not shown, of a screen device 38. The classification region 36 of the base plate 12 comprises a plurality of screen passages 20 in the base plate. The screen passages 20 are rectangular, in particular square, and arranged in rows adjacent to one another. The classification region 36 shown in figure 1 comprises by way of example 54 screen passages 20, wherein in each case six screen passages are arranged next to one another in a row of screen passages 20 running from the first attachment region 32 to the second attachment region 34. In total, the classification region 36 of the screen segment 10 comprises nine parallel rows of screen passages 20. The base plate 12 is for example made from steel.
A plurality of substantially rectangular and plate-shaped support plates 16 are affixed to the base plate 12. The support plates 16 are arranged in such a way on
8 the base plate 12 that they cover the entire surface of the base plate 12 facing the material to be classified. In the exemplary embodiment according to fig. 1, fifteen support plates in total are arranged next to one another in three parallel rows. The support plates 16 arranged on the attachment regions 32, 34 of the base plate are plate-shaped and merely have at least one hole 14 which serves for attaching the support plate to the base plate 12. In the middle one of the three rows of support plates 16, the two support plates 16 affixed in each case to the attachment regions 32, 34 of the base plate 12 each comprise two holes 14 for attaching the support plate 16 to the base plate 12. The support plates 16 are affixed to the attachment regions 32, 34 of the base plate 12 for example by means of screws.
It is moreover feasible for the support plates 16 to be adhered, soldered or welded to the base plate. The support plates 16 affixed to the classification region 36 of the base plate 12 are plate-shaped, with a plurality of screen passages 20. The screen passages 20 correspond to the screen passages 20 of the base plate 12 and are arranged aligned therewith, so resulting in a passage for material. The support plates 16 are affixed to the classification region 36 by means of welding, adhesion, soldering or screwing. The support plates 16 on the attachment regions 32, 34 and on the classification region 36 are made for example of steel, in particular a high-temperature resistant steel, or of polyurethane.
A plurality of plate-shaped antiwear elements 18 are affixed to the support plates 16. The antiwear elements 18 exhibit a rectangular, in particular square, base area and are affixed next to one another in a plurality of parallel rows on the support plates 16. In the exemplary embodiment shown in fig. 1, the antiwear elements are affixed to the support plates 16 in such a way that the entire opposite surface of the respective support plate 16 from the base plate 12 is covered with antiwear elements 18. The antiwear elements 18 are identical in size. By way of example, in each case five antiwear elements 18 are arranged in a row on a support plate affixed to an attachment region 32, 34 of the base plate 12 and not having any screen passages 20, wherein thirteen rows of antiwear elements 18 are affixed
It is moreover feasible for the support plates 16 to be adhered, soldered or welded to the base plate. The support plates 16 affixed to the classification region 36 of the base plate 12 are plate-shaped, with a plurality of screen passages 20. The screen passages 20 correspond to the screen passages 20 of the base plate 12 and are arranged aligned therewith, so resulting in a passage for material. The support plates 16 are affixed to the classification region 36 by means of welding, adhesion, soldering or screwing. The support plates 16 on the attachment regions 32, 34 and on the classification region 36 are made for example of steel, in particular a high-temperature resistant steel, or of polyurethane.
A plurality of plate-shaped antiwear elements 18 are affixed to the support plates 16. The antiwear elements 18 exhibit a rectangular, in particular square, base area and are affixed next to one another in a plurality of parallel rows on the support plates 16. In the exemplary embodiment shown in fig. 1, the antiwear elements are affixed to the support plates 16 in such a way that the entire opposite surface of the respective support plate 16 from the base plate 12 is covered with antiwear elements 18. The antiwear elements 18 are identical in size. By way of example, in each case five antiwear elements 18 are arranged in a row on a support plate affixed to an attachment region 32, 34 of the base plate 12 and not having any screen passages 20, wherein thirteen rows of antiwear elements 18 are affixed
9 parallel to one another on the support plate 16. The support plates 16 affixed to the classification region 36 of the base plate 12 are wider than the support plates 16 affixed to the attachment regions 32, 34 of the base plate 12 and comprise eight antiwear elements 18 arranged in a row. The antiwear elements 18 are arranged around the rectangular screen passages 20 at the edges thereof. In each case one row of antiwear elements 18 is arranged between two adjacent screen passages 20 of a support plate 16. The antiwear elements 18 are made of a hard metal, in particular of sintered tungsten carbide, and soldered or adhered to the support plates 16. In the case of a support plate 16 made of a plastics material, the antiwear elements 18 are vulcanized onto the surface of the support plate.
Each of the antiwear elements 18 exhibits a thickness of around 1.5 mm ¨ 40 mm, preferably 20 mm ¨ 30 mm, most preferably 8 mm ¨ 15 mm. An anticorrosion coating, not shown in figs. 1 and 2, or a nonstick coating is applied to the antiwear elements 18, this for example comprising a Teflon layer or a ceramic layer for additional wear protection.
in an exemplary embodiment not shown in figs. 1 and 2, the antiwear elements are affixed to the base plate 12. A support plate 16 is not provided. The antiwear elements 18 are soldered or adhered to the base plate 12 and are attached directly to the base plate 12.
Fig. 2 shows the screen segment 10 of fig. 1 in rear view. The base plate 12 of the screen segment 10 has in each case six further holes 30 in its attachment regions 32, 34. The holes 30 exhibit a larger diameter than the holes 14 and serve for attaching the base plate 12 for example to a screen device support.
Furthermore, four guide elements 22, 24, 26, 28 are arranged on the opposite side of the base .. plate 12 from the support plates 16, these serving on the one hand to guide the material falling through the screen passages and on the other hand to support the base plate for example on a screen device support. The guide elements 22, 24, 26, 28 comprise two lateral guide elements 22, 24, which each extend along one side of the classification region adjoining the attachment regions 32, 34. The material classified by the screen segment is then conventionally charged onto conveyor belts, which extend below the screen device. The lateral guide elements 22, 24 serve to guide the material falling through the screen passages 20 onto the conveyor belts, such that the material does not fall down to the sides thereof. The lateral guide element 24 exhibits a greater width than the guide element 22, whereby the screen segment 10 adopts an inclined position when the guide elements are supported on a screen device support. The guide elements 26, 28 extend orthogonally to the lateral guide elements 22, 24 and from the guide element 24 towards the guide element 22. The guide elements 26, 28 exhibit approximately the width of the lateral guide element 22 and are arranged parallel to one another at a distance from one another and from the edge of the screen segment 10 which corresponds to approximately a third of the length of the screen segment 10.
Figure 3 shows a screen device 38 with a plurality of screen segments 10. By way of example, the screen device 38 in fig. 3 comprises nine screen segments 10, which are arranged next to one another in three rows each with three screen segments. The screen segments 10 are arranged such that the respective guide elements 22-28 are supported on a frame arranged beneath the screen segments and the screen device 38 is arranged at an angle to the horizontal of around 5-20 , such that material to be classified that has been charged onto the screen device 38 is moved along the surface of the screen device 38 and thus efficient classification is achieved over the entire surface of the screen device. The screen segments
Each of the antiwear elements 18 exhibits a thickness of around 1.5 mm ¨ 40 mm, preferably 20 mm ¨ 30 mm, most preferably 8 mm ¨ 15 mm. An anticorrosion coating, not shown in figs. 1 and 2, or a nonstick coating is applied to the antiwear elements 18, this for example comprising a Teflon layer or a ceramic layer for additional wear protection.
in an exemplary embodiment not shown in figs. 1 and 2, the antiwear elements are affixed to the base plate 12. A support plate 16 is not provided. The antiwear elements 18 are soldered or adhered to the base plate 12 and are attached directly to the base plate 12.
Fig. 2 shows the screen segment 10 of fig. 1 in rear view. The base plate 12 of the screen segment 10 has in each case six further holes 30 in its attachment regions 32, 34. The holes 30 exhibit a larger diameter than the holes 14 and serve for attaching the base plate 12 for example to a screen device support.
Furthermore, four guide elements 22, 24, 26, 28 are arranged on the opposite side of the base .. plate 12 from the support plates 16, these serving on the one hand to guide the material falling through the screen passages and on the other hand to support the base plate for example on a screen device support. The guide elements 22, 24, 26, 28 comprise two lateral guide elements 22, 24, which each extend along one side of the classification region adjoining the attachment regions 32, 34. The material classified by the screen segment is then conventionally charged onto conveyor belts, which extend below the screen device. The lateral guide elements 22, 24 serve to guide the material falling through the screen passages 20 onto the conveyor belts, such that the material does not fall down to the sides thereof. The lateral guide element 24 exhibits a greater width than the guide element 22, whereby the screen segment 10 adopts an inclined position when the guide elements are supported on a screen device support. The guide elements 26, 28 extend orthogonally to the lateral guide elements 22, 24 and from the guide element 24 towards the guide element 22. The guide elements 26, 28 exhibit approximately the width of the lateral guide element 22 and are arranged parallel to one another at a distance from one another and from the edge of the screen segment 10 which corresponds to approximately a third of the length of the screen segment 10.
Figure 3 shows a screen device 38 with a plurality of screen segments 10. By way of example, the screen device 38 in fig. 3 comprises nine screen segments 10, which are arranged next to one another in three rows each with three screen segments. The screen segments 10 are arranged such that the respective guide elements 22-28 are supported on a frame arranged beneath the screen segments and the screen device 38 is arranged at an angle to the horizontal of around 5-20 , such that material to be classified that has been charged onto the screen device 38 is moved along the surface of the screen device 38 and thus efficient classification is achieved over the entire surface of the screen device. The screen segments
10 of the screen device are furthermore affixed, in particular screwed, via the holes 30 in the base plate 12 to a support for the screen device 38 arranged beneath the screen segments 10 of fig. 3.
When the screen device 38 is in operation, it is driven in such a way via a drive, not shown, for example a vibration exciter, that the screen segments 10 move in a vibratory manner, so resulting in optimum classification of the material charged onto the screen device 38.
When the screen device 38 is in operation, it is driven in such a way via a drive, not shown, for example a vibration exciter, that the screen segments 10 move in a vibratory manner, so resulting in optimum classification of the material charged onto the screen device 38.
11 Fig. 4 and fig. 5 show a screen segment 10 in a further embodiment. The screen segment 10 corresponds substantially to the screen segment 10 of figs. 1 and 2, with the difference that the antiwear elements 18 of figs. 4 and 5 correspond in shape substantially to the support plate 16 on which they are arranged. One antiwear element 18 is arranged in each case on each support plate 16. In total, the screen segment 10 comprises sixteen antiwear elements 18, which have each been affixed to a support plate 16. The antiwear elements 18 arranged on the attachment region 32, 34 of the screen segment 10 are substantially plate-shaped and each comprise a hole for attaching the screen segment 10 for example to a support, not shown. The antiwear elements 18 arranged in the classification region 36 of the screen segment 10 are substantially screen-shaped, with a plurality of screen passages 20. The antiwear elements 18 are for example screwed, welded or adhered to the support plate 16. The support plates 16 are screwed together with the base plate 12. Fig. 5 shows that each of the support plates 16 is attached to the base plate 12 by means of two screws.
List of reference signs 10 Screen segment
List of reference signs 10 Screen segment
12 Base plate zo 14 Hole 16 Support plate 18 Antiwear element Screen passages 22 Guide element 24 Guide element 26 Guide element 28 Guide element Hole 32 Attachment region =
34 Attachment region 36 Classification region 38 Screen device
34 Attachment region 36 Classification region 38 Screen device
13
Claims (19)
1. A screen segment of a screen device for separating or classifying charging stock, which have been or are to be crushed into at least two grain size fractions, the screen segment comprising a substantially screen-shaped base plate, wherein a plurality of plate-shaped antiwear elements are arranged on the base plate, wherein a plurality of support plates are affixed next to one another on the base plate and the plurality of plate-shaped antiwear elements are affixed to each of the support plates.
2. The screen segment of claim 1, wherein the mineral materials comprise oil sand.
3. The screen segment as claimed in claim 1, wherein the at least one antiwear element is made of a hard metal.
4. The screen segment as claimed in any one of claims 1 to 3, wherein the at least one antiwear element exhibits a thickness of around 1.5 mm ¨ 40 mm.
5. The screen segment as claimed in any one of claims 1 to 3, wherein the at least one antiwear element exhibits a thickness of around 20 mm ¨ 30 mm.
6. The screen segment as claimed in any one of claims 1 to 3, wherein the at least one antiwear element exhibits a thickness of around 8 mm ¨ 15 mm.
7. The screen segment as claimed in any one of claims 1 to 6, wherein the at least one antiwear element comprises a coating.
8. The screen segment as claimed in any one of claims 1 to 7, wherein the at least one antiwear element is joined to the support plates by substance-to-substance bonding.
9. The screen segment as claimed in any one of claims 1 to 8, wherein each antiwear element is affixed in each case to one of the support plates.
10. The screen segment as claimed in any one of claims 1 to 9, wherein the support plates are affixed detachably to the base plate.
11. The screen segment as claimed in any one of claims 1 to 10, wherein at least one of the support plates is screen-shaped.
12. The screen segment as claimed in any one of claims 1 to 11, wherein at least one of the support plates is made from steel.
13. The screen segment of claim 12, wherein the steel is high-temperature steel.
14. The screen segment as claimed in any one of claims 1 to 11, wherein the support plates are made at least in part of an elastomer.
15. The screen segment as claimed in any one of claims 1 to 7, wherein the at least one antiwear element is joined to the base plate by substance-to-substance bonding.
16. The screen segment as claimed in any one of claims 1 to 15, wherein the antiwear elements are arranged spaced from one another, such that a gap is formed between adjacent antiwear elements.
17. The screen segment as claimed in any one of claims 1 to 16, wherein the charging stock comprises mineral materials.
18. A screen device comprising at least one screen segment as claimed in any one of claims 1 to 17 and at least one vibration exciter, which is connected to the at least one screen segment in order to move the at least one screen segment in a vibratory manner.
19. The screen device as claimed in claim 18, wherein the screen device comprises a plurality of screen segments with screen passages, wherein the size of the screen passages in the screen segments differs at least in part over the length of the screen device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015213327.3A DE102015213327B4 (en) | 2015-07-16 | 2015-07-16 | Sieve segment with wear protection elements |
| DE102015213327.3 | 2015-07-16 | ||
| PCT/EP2016/066435 WO2017009288A1 (en) | 2015-07-16 | 2016-07-11 | Screen segment comprising wear-resistant elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2992665A1 CA2992665A1 (en) | 2017-01-19 |
| CA2992665C true CA2992665C (en) | 2021-01-26 |
Family
ID=56404125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2992665A Active CA2992665C (en) | 2015-07-16 | 2016-07-11 | Screen segment comprising wear-resistant elements |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2992665C (en) |
| DE (1) | DE102015213327B4 (en) |
| WO (1) | WO2017009288A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017211948B3 (en) | 2017-07-12 | 2018-03-22 | Thyssenkrupp Ag | Sieve segment with a wear protection and method for producing a sieve segment |
| DE102017211958A1 (en) | 2017-07-12 | 2019-01-17 | Thyssenkrupp Ag | Sieve segment with wear protection elements |
| CN108686945B (en) * | 2018-04-12 | 2020-04-17 | 浙江华堃环保建筑构件有限公司 | Manufacturing device for high-strength concrete structural member |
| DE102019212715A1 (en) * | 2019-08-26 | 2020-03-05 | Thyssenkrupp Ag | Sieve made by casting |
| US11624031B2 (en) | 2021-02-23 | 2023-04-11 | Syncrude Canada Ltd. | Tiled screen cloth |
| US11679416B1 (en) | 2022-05-05 | 2023-06-20 | Syncrude Canada Ltd. In Trust For The Owners Of Th | Screen cloths |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043768B (en) * | 1957-02-20 | 1958-11-13 | Rosenthal Isolatoren Ges Mit B | Plate sieve bottom |
| DE2310840B2 (en) * | 1973-03-05 | 1978-07-27 | Hein, Lehmann Ag, 4000 Duesseldorf | Wear protection plate |
| DE3008931A1 (en) * | 1980-03-08 | 1981-09-17 | Hein, Lehmann AG, 4000 Düsseldorf | SYSTEM SCREEN |
| DE8709909U1 (en) * | 1987-07-18 | 1987-09-17 | Steinhaus Gmbh, 4330 Muelheim, De | |
| DE29610431U1 (en) * | 1996-06-14 | 1996-08-22 | Haver & Boecker | Feed plate for bulk material processing plants |
| DE19627039A1 (en) * | 1996-07-05 | 1998-01-08 | Gotek Gmbh | Sieve plate |
| DE102007034512B3 (en) | 2007-07-24 | 2008-06-26 | ThyssenKrupp Fördertechnik GmbH | Drive device i.e. unbalance drive, for driving sieving body of sieving machine, has bearing units exclusively arranged at horizontal shafts in axis direction of shaft section between unbalance units and supported at crossbar |
| CA2645317C (en) * | 2008-11-27 | 2014-07-22 | Pac Mining Pty Ltd | Wear resistant screen plate |
-
2015
- 2015-07-16 DE DE102015213327.3A patent/DE102015213327B4/en active Active
-
2016
- 2016-07-11 WO PCT/EP2016/066435 patent/WO2017009288A1/en active Application Filing
- 2016-07-11 CA CA2992665A patent/CA2992665C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015213327A1 (en) | 2017-01-19 |
| DE102015213327B4 (en) | 2020-03-05 |
| CA2992665A1 (en) | 2017-01-19 |
| WO2017009288A1 (en) | 2017-01-19 |
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| EEER | Examination request |
Effective date: 20180116 |