NZ614966B2 - Screen panel with improved screening area - Google Patents
Screen panel with improved screening area Download PDFInfo
- Publication number
- NZ614966B2 NZ614966B2 NZ614966A NZ61496612A NZ614966B2 NZ 614966 B2 NZ614966 B2 NZ 614966B2 NZ 614966 A NZ614966 A NZ 614966A NZ 61496612 A NZ61496612 A NZ 61496612A NZ 614966 B2 NZ614966 B2 NZ 614966B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- screening
- screen panel
- screen
- rider bars
- panel
- Prior art date
Links
- 238000012216 screening Methods 0.000 title claims abstract description 66
- 230000002787 reinforcement Effects 0.000 claims abstract description 20
- 238000005065 mining Methods 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 239000005060 rubber Substances 0.000 claims description 12
- 238000013517 stratification Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Abstract
screen panel for mining and quarrying industries adapted to be mounted on a screen deck, the screen panel including at least a screening portion having one or more rider bars (3) and a bottom reinforcement portion. The rider bars are detachably attached to the screening portion by button type fittings (4). The rider bars are adapted to be replaced from said screening portion as and when required. ings (4). The rider bars are adapted to be replaced from said screening portion as and when required.
Description
SCREEN PANEL WITH IMPROVED SCREENING AREA
FIELD OF THE INVENTION
The present invention in general relates to screening panel for screening / separating
or grading of minerals in the mining and quarrying industries and in particular to
screen panels equipped with replaceable rider bar n.
OUND OFTHE INVENTION
Screening panel system for ore ing decks that is now widely used by the
mining industry, replaced the earlier screening cloths and large wire screening
frames. These screening panels are known to be} either of Rubber or Polyurethane
with steel reinforcements. It is also known that such panels are manufactured by hot
vulcanized method or casting. The panels are adapted to be secured with the support
frame of the screen machine by bolting. The panels may also be secured to the
frame with an alternate method using a pin and separate lug arrangement.
A difficulty tered in using the panels in vogue is that during screening
operation, lump or big particles cause substantial impact on these panels.
Consequently, the panels get worn out at a faster rate.‘ To be precise, the screening
portion gets damaged away due to constant use and consequent wear and tear,
rendering the entire screen panel unfit for use after a certain period of operation.
Also, due to low ing efficiency, the stratification achieved in the screened
material is low.
Accordingly, there exists a long felt need to design improved screen panels for its
application in mining and ing industries, which have replaceable portions in
the screening portion, so that the longevity of the screen panel is substantially
improved and simultaneously, the screening efficiency is improved.
The present invention meets the aid long felt need.
All h out the specification including the claims, the words “screen panel”,
“mining”, “quarrying”, “mineral”, , “abrasion resistant”, “wear resistant”,
“rider barII \\
, reinforcement portion”, are to be interpreted in the broadest senseof
the respective terms and es all similar items in the field known by other terms,
as may be clear to persons skilled in the art. Restriction/limitation, if any, referred to
in the specification, is solely by way of example and understanding the present
invention.
OBJECTS OF THE INVENTION .
It is the principal object of the present invention to provide a screen panel having a
screening portion with replaceable rider bars for its application in mining and
quarrying industries.
It is a r object of the present invention to provide a screen panel having
higher longevity and which is flexible.
It is a further object of the present invention to provide a screen panel adapted to
provide ed stratification in the ed material.
‘It is yet another object ofthe present invention to provide a screen panel which has
a substantially low cost of manufacturing and operation.
How the foregoing objects are achieved and the other aspects of the present
invention, will be clear from the following description which is purely by way of
understanding and not by way of any sort of limitation.
Y OF THE INVENTION
Accordingly, the t invention provides a screen panel for mining and quarrying
industries adapted to be mounted on a screen deck including at least a screening
portion having one or more rider bars and a bottom reinforcement portion, said
screen panel being designed such that said rider bar(s) is(are) adapted to be
replaced from said screening portion as and when required.
In accordance with preferred ments of the screen panel of the present
invention:
—said sCreening portion of said screen panel has abrasion ant apertures having
a flaring design and said screen panel is adapted to provide improved stratification;
—said screening portion having one or more rider bars and said reinforcement zone
are adapted to be configured as a plurality of modular units;
~said rider bars are attached to a portion of said ing portion and/or said
reinforcement portion by button type snug fitting or by pin and lug arrangement or
by g or by any slot;
asaid rider bars are made up of polyurethane/rubber/steel and said reinforcement
section is a frame made by hot vulcanizing or casting with rubber or polyurethane;
~the screening surface of said panel is made of any one of or a combination of mild
steel, stainless steel, rubber and/or polyurethane with or without steel reinforcing;
—the reinforcement n of said panel is fitted to the machine frame by button
type snug fitting or by pin and lug arrangement or by bolting.
The present invention also provides a method of cturing a screen panel for
mining and quarrying industries adapted to be mounted on a screen deck, including
designing a screening portion and
, at least a bottom reinforcement n,
detachably attaching one or more rider bars to lie on said screening portion in the
manner such as herein described and attaching said screening portion and said
reinforcement section such that said rider bars can be ed as and when
» required.
'The present invention also provides a screening deck for mining and quarrying
industries, having mounted thereon a plurality of screen panels each said panel at
least a ing portion having one or more rider bars and a bottom reinforcement
’ portion, said screen panel being designed such that said rider bar(s)
is(are) adapted
to be replaced from said screening portion as and when required.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The nature and scope of the present invention, will be better tood from the
accompanying» drawings, which are by way of illustration of some preferred
embodiments and not 'by way of any sort of limitation. In the accompanying
drawings,
Figure 1 illustrates a plan view of the screening surface in accordance with a
preferred embodiment of the present invention.
Figure 2 rates a sectional view of the ing surface in Figure 1 along the line
A—A.
Figure 3 illustrates an enlarged plan view of a preferred embodiment of the rider bar,
according to a red embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The following describes a preferred embodiment of the present invention, which are
purely for the sake of understanding the performance of the invention, and not by
way of any sort of limitation.
.Principally, the t invention aims to providing a ing device for screening
mineral ores, which improves the screening efficiency by ing stratification as
well as prevents wear of the ._Thus, the life of the panels is sed . This is
done by designing screen panels having screening portions with replacable rider
bars. This technology, improves the screening efficiency ‘to a great extent and at the
same time, it prevents wear considerably with the help of its unique rider bar
design. The polyurethane/Rubber, helps to take the impact of the materials coming
in contact with the screening surface, whereas the apertures prevent clogging, due
to its flaring type design(not shown). In the event of substantial wearing of the rider
bars, those can be replaced with fresh ones, thus eliminating the need for replacing
the entire screening portion, or] for that matter the entire screening panel.
The preSent invention, prevents the wear considerably by protecting the modular
' panels and enhances the screening efficiency, due to the presence of eable
rider bars. This in turn improves the stratification in the screened al.
The panel is manufactured by hot vulcanizing or casting with rubber or polyurethane,
having externally reinforced/supported with the panel ‘fixing frame under the edge
surface of the panel . The panels have button fixing slots
, in the screening portion,
into which button type rider bars, i.e- replaceable rider bars are fixed, say for
example, simply by press fit. The accompanying figure 1 illustrates the screening
surface of a preferred embodiment of the screen panel, according to the present
ion. It shows the slot (1) for button type fixing of the rider bars (3), best
shown in the accompanying figures 2 and 3. The accompanying figure 1 also shows
the screen panel 2 fitted to the frame through lugs and pins.
In the above context, it is hereby clarified that the screen panel 2, the reinforcement
portion to be precise, may be fitted to the frame by button type, bolting type, pin
and lug type or by any other suitable technique, as would be known to persons
skilled in the art and the present invention also encompasses all such techniques.
This is true also for the fitting arrangement of the rider bars(3) on the ing
portion of the panel as well. The accompanying s 2 and 3 show only one such
technique. Alternatively, the rider bars may be fitted in the reinforcement portion
also in the same manner
, ensuring that the ty of it lies in the screening
Now coming to the accompanying figure 2, it shows how the rider bars 43 have
preferably a button type fixing (4). This would be further clear from the
anyingufigure 3, where the like reference ls, represent like features.
The screening portion of the panel has a slot(1)[i|lustrated in figure 1], into which
the protrusion(4) is detachably attached by snug fitting. This slot, alternatively may
be in the rcement portion as well, but in that event, rider bars have to be fitted
therein , ensuring that the majority of it lies in the screening portion.
Since lump size particles do not come to the contact of main screening zone (or
comes very less), the whole screening zone or the panel need not to be replaced.
.Just replacing the rider bars in the sereening zone will do. There is no need'to
replace the entire screen panel or for that matter the entire screening zone. This
facilitates ng higher longevity of the screen panels and, simultaneously,
ensures low cest of operation. Thus, the rider bars prolong the life of the screening
elements and also reduce the cost of ion.
Further, the rider bars ensure enhancement of stratification in the screened material
and thus the screening efficiency is sed as will be understood to persons
skilled in the art. In particular,. this is achieved by replacing the damaged rider bars
from time to time so that the al to be screened is indeed screened, rigorously,
according to the grain size, so that no clogging or defective/erroneous screening
takes place. Hence, improved stratification is achieved.
The screen panels are preferably standard r .e— 305x305 or 300x300
610x300 or similar will have all the advantages of modular panels,i.e— easy to handle,
down time is much less compared to existing panels for similar ation. Further the
panels can be of any size starting from, the standard modular sizes. Rider bars are
easily replacable when they get worn out, as stated before. Hence, by changing only
the rider bars the screen can be used for a considerable period of time and without"
changing the whole screen panels. This renders the screen panels economic as well.
This technology. is applicable to both rubber and polyurethane panels.
y, the screening surface is made of any one of or a combination of mild steel,
stainless steel, rubber and/or polyurethane with or without steel reinforcing.
The comprehensive panel preferably comprises of vulcanized material, rubber
polyurethane, having embedded within it steel reinforcing bars, at the outer edges of
said panel and extended across the inner area of said panel, thereby providing
support to said screening surface.
Further the fixing of replaceable rider bars may be done by the button type snug '
fitting applying the fixing means, as protected by patent number 231453 of the
applicant. As explained before, other type of fixing arrangements are also ed
by the present invention. For example, instead of snug fitting type of arrangement,
there may be pin and lug_type fixing arrangement forfixing the two portions of the
panel and for g the panel on to the machine frame. Alternatively, there may be
bolt type of fixing arrangement.
The method of manufacturing a screen panel according to the present invention
includes designing a screening portion and at least a bottom reinforcement n,
detachably attaching one or more, rider bars to lie on said screening portion in the
manner such as herein described and attaching said screening portion and said
reinforcement section such that said rider bars can be replaced, from said screening
portion as andwhen required.
The t invention has been described with reference to some drawings and
preferred embodiments, purely for the sake of understanding and not by way of any
limitation and the present invention includes all mate developments within the
scope of what has been described hereinbefore and d in the appended claims.
Claims (9)
1. A screen panel for mining and quarrying industries adapted to be mounted on a screen deck, the screen panel including at least a screening n having one or more rider bars and a bottom rcement portion, wherein said rider bars are detachably attached to said screening n by button type fittings, and wherein said one or more rider bars are adapted to be replaced from said screening portion as and when required.
2. The screen panel as d in claim 1, wherein said screening portion of said screen panel has abrasion resistant apertures having a flaring design and said screen panel is adapted to provide improved stratification.
3. The screen panel as claimed in claim 1, wherein said screening portion having one or more rider bars and said bottom reinforcement portion are adapted to be configured as a plurality of modular units.
4. The screen panel as claimed in any preceding claim, wherein said rider bars are made up of polyurethane/rubber/steel and said bottom reinforcement portion is a frame made by hot vulcanizing or casting with rubber or polyurethane.
5. The screen panel as claimed in claim 1 wherein a ing surface of said panel is made of any one of or a combination of mild steel, stainless steel, rubber and/or polyurethane with or without steel rcing.
6. The screen panel as claimed in any preceding claim wherein the reinforcement portion of said panel is fitted to a machine frame by button type fittings or by pin and lug arrangement or by bolting.
7. A method of manufacturing a screen panel for mining and quarrying ries adapted to be mounted on a screen deck, the method including the steps of: ing a screening portion to a bottom reinforcement portion; and detachably attaching one or more rider bars to said screening portion using button type fittings such that said rider bars can be replaced from said screening portion as and when required.
8. A screening deck for mining and quarrying ries, having mounted thereon a plurality of screen panels each of said , plurality of screen panels having at least a screening portion having one or more rider bars detachably attached to said screening portion by button type fittings and said screening portion having a bottom reinforcement portion, wherein said one or more rider bars are adapted to be replaced from said screening portion as and when required.
9. The screen panel as d in claim 1, wherein the screen panel has a size that is substantially 305x305 mm or 0 mm or 610x300 mm. FIG 1 FIG 3
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN300/KOL/2011 | 2011-03-08 | ||
IN300KO2011 | 2011-03-08 | ||
PCT/IN2012/000158 WO2012120542A2 (en) | 2011-03-08 | 2012-03-06 | Screen panel with improved screening area |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ614966A NZ614966A (en) | 2015-01-30 |
NZ614966B2 true NZ614966B2 (en) | 2015-05-01 |
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