CN101198410A - Apparatus for discharging material from a mill - Google Patents
Apparatus for discharging material from a mill Download PDFInfo
- Publication number
- CN101198410A CN101198410A CNA2006800217360A CN200680021736A CN101198410A CN 101198410 A CN101198410 A CN 101198410A CN A2006800217360 A CNA2006800217360 A CN A2006800217360A CN 200680021736 A CN200680021736 A CN 200680021736A CN 101198410 A CN101198410 A CN 101198410A
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- wall
- pulp lifter
- grinder
- lifter
- slurry
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- 238000007599 discharging Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 title description 38
- 239000002002 slurry Substances 0.000 claims abstract description 82
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 description 13
- 230000007704 transition Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
A pulp lifter for installation in a grinding mill has a leading edge and a trailing edge with respect to rotation of the mill and comprises a first wall bounding an interior space and a second wall dividing the interior space into first and second sections. The first wall includes a leading edge wall formed with an inlet opening providing access to the second section and an inner edge wall formed with an outlet opening for discharge of slurry from the second section. The second wall includes a guide that extends substantially from an outer end of the leading edge wall to a trailing end of the inner edge wall, and the first section of the interior space is open at the trailing edge of the pulp lifter.
Description
Technical field
The present invention relates to from grindstone equipment that material is discharged, this grindstone is used for grinding or pulverizing, and grid and pulp lifter preferably are arranged on the outlet upstream along material direction of advance (being the direction that material passes grinder) in this grinder, and so be installed in grinder inside, thereby grid and pulp lifter are rotated and are rotated along with grinder.
Background technology
Be used for grinding or the pulp lifter of the grinder of comminuting matter will be transported in the outlet of grinder by the slurry in the hole in associated grate.International open WO98/01226 relates to the pulp lifter that is used for grid discharge type grinder.This pulp lifter comprises the chamber of a plurality of radial arrangement to rotate against the downstream of vertical grid.Rotate along with grinder and roll in the charging of the grinder ore of grid upstream side.Supply water to grinder, and when moving powder ore by rolling, fine particle thing and water form slurry in the space between ore.Some slurries are passed in the hole in this grid.Each chamber on the grid downstream comprises transition compartment and collects compartment.Transition compartment has the wall facing to grid, and this wall is formed with a plurality of holes so that make slurry enter into transition compartment.During the each part of rotating of this grinder, each pulp lifter is pressing the mill charge that is positioned at the grid upstream side conversely to be passed through, and slurry passes grid and from then on enters transition compartment.Pulp lifter is designed so that slurry can be passed into the collection compartment so that discharge subsequently from transition compartment, but can not turn back to transition compartment from collecting compartment.Therefore, in the situation of the practical application described in the described WO document, when pulp lifter is in place, its travel path bottom and slurry and enters into transition compartment by grid, collect below the height that compartment is positioned at transition compartment.
Two continuous basically sections in transition compartment disclosed in the WO document WO 98/01226 and collection compartment formation pulp lifter.These sections can be divided into identical part separately by plate.These plates tilt a little towards the grid side, and be parallel to each other, thereby be formed near the grid changeover portion by the zone of a plate and a paragraph qualification, and constitute the collection compartment, itself and pulp lifter grid spaced by the zone of another piece plate and another paragraph qualification.
When 75% the speed that promptly is lower than the grinder critical speed with relatively low speed at grinder is rotated, be practicable in the pulp lifter described in the international publication document WO 98/01226.But, increase to when higher in speed, leaving over appears in the comminuting matter in collecting compartment, and has therefore reduced the grinding in grinder and the validity of pulverizing.
The shortcoming of many existing pulp lifter is, stone can be accumulated in the pulp lifter and along with grinder rotates and circulation again.The restricted number that stone exists in pulp lifter can be used for the space of slurry, and reduced flow gradient, and can cause and in grinder, form slurry pool by grid.In addition, because from the backflow of pulp lifter, so there is shortcoming in many conventional pulp lifters by grid.Therefore, in case pulp lifter chamber is full of slurry, then flow gradient reduces, and slurry can and reflux and pass grid along with the pulp lifter rising.
Be used under the situation that grinder rotates with high rotation speed more also the more effective equipment that can material be discharged from the grinder that is used to grind or pulverize even the objective of the invention is to eliminate the shortcoming of prior art and realization.
Summary of the invention
The preferred embodiments of the invention are to be used for during grinding or pulverizing the equipment that will discharge at the material that grinder produces, thereby the material of discharging from grinder is guided through this equipment.This equipment is provided with two parts, and they interconnect by at least one opening, pass described opening from the material that grinder is discharged.At least the second portion along direction of advance is provided with at least one guiding elements, it with material towards the outlets direct of second portion and with material further towards the outlets direct of grinder.By using this equipment, can adopt 90% grinder speed up to the critical speed of grinder.
Opening between two parts of equipment is the outlet along the first of material direction of advance, and is the inlet that is used for the second portion of equipment simultaneously.This equipment also is provided with at least one along the first of material direction of advance and is used for the opening that material enters, and correspondingly the second portion of this equipment is provided with the opening that leaves that at least one is used for the material that will discharge.This equipment preferably is connected on the framework that is installed in the grinder.This frame supported is on the main body of grinder, and this framework is arranged near the outlet side of grinder.This equipment extends internally from the inner surface radial direction of the wall of grinder and crosses at least 30% of electrical path length in the grinder.First and second portion have in fact just covered a sector of grinder together.Therefore, when being installed in this equipment in the grinder, this grinder can comprise 8 to 40 unit altogether, and these unit are arranged separately on the framework of grinder.
This equipment is preferably made by the single structure spare that is installed in the grinder as individual unit, but this equipment can be chosen wantonly by at least two independent structural members and makes.For example, first and second portion can be made by independent structural member, mechanical connection when these structural members are installed in the grinder at them.The structural material of this equipment is preferably the metal that is coated by rubber.
This equipment so is installed in the grinder, thereby this equipment is located at material charging below on the grid upstream side along first to the small part of material direction of advance.In this case, some materials of discharging from grinder enter first by hole grid and the inlet by first.Along with grinder is rotated further, first rises, and the material that will discharge is mobile and enter second portion by Open Side Down between two parts.The guiding elements of second portion with material towards the grinder outlets direct that is arranged in the grinder middle body.Guiding elements has prevented that material from advancing along the wall of grinder, therefore prevents or reduced at least the delay of comminuting matter.
Description of drawings
With reference to the following drawings the present invention is described in more detail below, wherein:
Fig. 1 is the partial cut schematic side elevation, demonstrates to be provided with the grinding machine structure that embodies equipment of the present invention;
Fig. 2 is a schematic side elevation, demonstrates the embodiment of the Fig. 1 that sees along the A-A line;
Fig. 3 is a schematic elevational view, demonstrates two unit of this equipment;
Fig. 4 demonstrates the embodiment of the Fig. 1 that sees along the B-B line;
Fig. 5 is a schematic side elevation, demonstrates the embodiment of Fig. 3;
Fig. 6 is for embodying the amplification fragmentary, perspective view of two pulp lifter of the present invention;
Fig. 7 is for embodying the perspective view of the 3rd pulp lifter of the present invention;
Fig. 8 is for embodying the perspective view of the 4th pulp lifter of the present invention;
Fig. 9 is a perspective view, demonstrate wherein the pulp lifter shown in Fig. 8 with have the mode of other pulp lifter cooperation of similar structures;
Figure 10 is the perspective view of the parts of embodiment the 5th pulp lifter of the present invention;
The view at parts Figure 10 shown in of Figure 10 A on the 10A-10A of Figure 10 line, obtaining;
Figure 11-13 is the perspective view of the 5th pulp lifter structure at different assembling stages place; And
Figure 14 and 15 demonstrates the stone of comparing in embodying grinder of the present invention with the common grinding machine and how to be detained.
The specific embodiment
Fig. 1 and 2 demonstrates the grindstone 1 that the material 2 that is ground therein by abrasive media is housed.This grinder 1 is arranged to rotate around rotation 3.Grinder is supported on the mechanical base by the bracing or strutting arrangement (not shown).To 4 be sent in the abrasive areas of grinder 1 by entering the mouth at the material 2 of grinding machine for grinding.Preferably also water is provided in the grinder 1 so that in grinder 1, form wet lapping.Between the abrasive areas and outlet 5 of grinder 1, framework 6 is installed in grinder 1, it is supported on the main body 7 of grinder 1.This framework 6 is for being used for the supporting member of pulp lifter assembly, and described assembly comprises guiding elements 8,9 and discharges cone 10.Material after the pulp lifter assembly will grind from abrasive areas guides to the outlet 5 of grinder 1.As shown in Figure 2, the pulp lifter assembly comprises the pulp lifter 11 of several successive.Each pulp lifter 11 is installed on the grid or sieve 12 with hole 13, and the material 2 after the grinding passes described hole and enters in the slurry bag of pulp lifter.As shown in Figure 1, at least one pulp lifter 11 is partially submerged at least in material 2 in the operating period of grinder 1.Pulp lifter 11 has the rectangle of being essentially or trapezoidal shape, thereby two outer side edges of pulp lifter 11 or edge 21 are substantially parallel, and two other outer side edges or edge 22 converge mutually.Pulp lifter 11 so is installed in the grinder 1, thereby the long outer side edges of two parallel sides 21 is near the main body 7 of grinder 1.
Fig. 3 to 5 demonstrates part interconnective two pulp lifter 11A, 11B.In the pulp lifter shown in Fig. 3-5 and similar in the embodiment shown in Fig. 1 and 2.Each pulp lifter 11 has first 15 and the second portion 16 that is separated by wall 23.Have the grid of sieve aperture 13 or sieve 12 is installed in pulp lifter 11 along the direction of advance 19 of material first 15 fronts.Between the second portion 16 of the first 15 of pulp lifter 11B and pulp lifter 11A, has opening 17.The second portion of each pulp lifter 11 is provided with guiding elements 18, and it extends near the position the radial inner end of the trailing edge 22 that is positioned at pulp lifter 11 near the position the radial outer end of the leading edge 22 (with respect to the direction of rotation 24 of grinder) that is positioned at pulp lifter 11.As shown in these accompanying drawings, guiding elements so constitutes, thus at least from that part of total length at guiding elements of second portion inlet beginning at least 25% on crooked.The outer end of the guiding elements front end of the direction of rotation of grinder (or along) guiding on grinder tangential, and the inner or tail end are basically towards rotation 3 guiding of grinder 1.
In the operating period of grinder 1, grinder 1 rotates around its rotation 3, and 11 1 of pulp lifter then one be immersed in the material 2 that institute grinds or pulverize.During given pulp lifter (for example pulp lifter 11A) submergence, some materials 2 pass the first 15 that filter screen or sieve 12 flow to pulp lifter 11A.Along with grinder 1 is rotated further, first 15 promotes step by step from its submerged state, and the material in the first of pulp lifter 11A flows to downwards in the second portion 16 of pulp lifter 11B by opening 17.Because guiding elements 18 in the second portion 16 of pulp lifter 11B, so material flow towards central authorities' guiding of grinder 1, and is advanced the outlet 5 of grinder 1 in addition by guiding elements 8,9 and 10 guiding, so that this material 5 is further handled.
Along with pulp lifter 11A rises, the material that is in the radially outer zone of first 15 flows in the second portion 16 of pulp lifter 11B by opening 17 downward (referring to the arrow in Fig. 4 19), and by the central axial line guiding of guiding elements towards grinder.When pulp lifter continued to rise, the material in the part 16 of pulp lifter 11B further guided towards central axial line, and was discharged on guiding elements 8 and 9 from pulp lifter, and these guiding elements are directed to this material on the cone 10.This material can not be accumulated or be collected in the outside lower corner zone of part 16.
Rotate along counter clockwise direction as shown in Figure 2 at the grinder shown in Fig. 1-6.Let us considers that pulp lifter 11A wherein is positioned at the situation of 6 positions (being located immediately at the rotation below of grinder).In this case, the several holes 13 in grid 12 are immersed in the slurry, and slurry enters in the first 15 of pulp lifter 11A.Slurry also flows in the second portion 16 of pulp lifter 11B by opening 17, still can not enter back (outer rear portion) folding corner region down of second portion, because that zone is subjected to stopping of guiding elements 18.When rotating towards 3 positions from 6 positions at grinder, the orientation of pulp lifter 11A changes, and some holes among the row are exposed to the slurry top in front, and the radially outermost face of arranging at least later simultaneously keeps submergence.Owing to be communicated with at slurry on the grid upstream side and the slurry in first 15, if so the slurry in the first of pulp lifter rises along with pulp lifter 11A and flows downward, then between grid upstream side and first, realized pressure balance, thereby the Free Surface of the slurry in pulp lifter trends towards always keeping below the Free Surface of the slurry on the grid upstream side, thereby keeps flow gradient on grid.In the situation of the design capacity of surpassing these pulp lifter for the grinder feed, some slurries may be back to the upstream side of grid from first, but because opening 17 is more much bigger than hole 13, so main effect is that balanced flow will enter in the second portion 16 of pulp lifter 11B by opening 17.In addition, because the curved shape of guiding elements, so grinder rotates rather than remain on second portion from 6 positions towards 3 positions below the external angle time, the extreme lower position that the free space in the second portion of pulp lifter 11B promptly is not subjected in the space that guiding elements 18 stops will be towards the radially inwardly motion of central axial line of grinder.According to the slurry degree of depth on the grid upstream side, some slurries in second portion can overflow the radial inner end of guiding elements 18 and move towards guide cone 10.In any case, when pulp lifter 11A arrives 3 positions basically, all slurries will enter into the second portion of pulp lifter 11B, and many slurries will move towards guide cone from pulp lifter 11B, and when it arrives 12 positions, all slurries will drop on the guide cone 10.
Fig. 6 demonstrates the modification in the pulp lifter shown in Fig. 3-5.In Fig. 6, two parts 15,16 of each pulp lifter are close mutually on circumference, rather than overlapping on circumference.Therefore, each pulp lifter has front portion 15 and rear portion 16 with respect to the direction of rotation of grinder, and these two parts are communicated with by opening 17.These pulp lifter are installed according to the mode of crawling, and the front portion of given pulp lifter is overlapping with the rear portion of the pulp lifter that is positioned at this given pulp lifter front along the grinder direction of rotation.The part 16 of each pulp lifter is connected with the guiding elements 9 of the upwardly extending pipeline in footpath that is formed on grinder.
Fig. 7 demonstrates the practical application of the pulp lifter that more schematically demonstrates in Fig. 3-5.Rotation along grinder is seen pulp lifter, and this pulp lifter has continuous rear wall 24, is formed with the inner wall 25 and the edge wall 26 of outlet (not shown).Pulp lifter is opened at its place, front side.Midfeather 23 is spaced apart with rear wall 24, and is connected with rear wall by guiding piece 18.Guiding piece 18 and midfeather 23 separate the first 15 of pulp lifter and second portion 16.Edge wall 26 is formed with and transmits mouth 17.The grid (not shown) uses the securing member that engages with hole 27 in edge wall to be installed on the pulp lifter.When being installed in a plurality of lifters in the grinder, be communicated with second portion 16 by the transmission mouth 17 in edge wall 26 at the disposed slurry lifter at the disposed slurry lifter in the first 15 of preceding pulp lifter.In operation, slurry is along with lifter enters the first 15 of pulp lifter by 6 o ' clock positions by the hole in grid.Along with pulp lifter is rotated towards 3 o ' clock positions, pulp lifter rises with respect to pulp lifter subsequently, and passes in transmission mouthful 17 second portions 16 that flow at the disposed slurry lifter at the slurry in the first 15 in preceding pulp lifter.When pulp lifter is rotated further, flow along guiding piece 18 at the slurry in the second portion of disposed slurry lifter, and the opening that is passed in the inner wall 25 is mobile towards cone 10, as mentioned above.The structure of guiding piece 18 is with the slightly different part of Fig. 3-5 in Fig. 7, the radial outer end of guiding piece is peripheral not tangent with grinder not, but the major function of guiding piece is identical, prevents when promptly being used in pulp lifter from 6 positions rotating towards 3 positions that comminuting matter from staying on the mill wall.
Fig. 8 and 9 demonstrates and embodies another pulp lifter of the present invention.Similar with shown in Fig. 7 of the pulp lifter shown in Fig. 8 and 9, except midfeather 23 is not to extend jointly with rear wall 24, but just extension on the second portion 16 of pulp lifter.Therefore, because guiding piece 18 is the part of the first in the lifter shown in Fig. 8 and 9, so the space between rear wall and midfeather can not be used for the slurry at the lifter shown in Fig. 7.Therefore, can be used for slurry being sent in the situation of zone Fig. 8 and 9 of second portion 16 greater than in the situation of Fig. 7 from first 15 by transmitting mouthfuls 17.In addition, should be understood that, when a plurality of pulp lifter that is equipped with as shown in Figure 7, partly stopped transmission mouth 17 at the trailing edge wall 28 of preceding pulp lifter, and only the part in 29 fronts of the dotted line shown in Fig. 7 can be used for slurry and flows at the disposed slurry lifter.In the situation of Fig. 8 and 9,, has bigger effective area at the transmission mouth 17 of disposed slurry lifter, because they are not partly stopped in preceding pulp lifter for pulp lifter with similar size.
Use guiding piece 18 in the pulp lifter in the figure because several reasons and be favourable with respect to up to now conventional pulp lifters.At first,, mouthful send slurry to second portion 16 and prevented when 6 o ' clock positions rise to 3 o ' clock positions in pulp lifter from the backflow of second portion by grid from first 15 by transmitting.The second, by preventing accumulation of material in the outer back region of pulp lifter, guiding piece 18 has been guaranteed stone and slurry delay minimum when grinder rotates.
Figure 10-13 demonstrates another pulp lifter structure.Be installed in the pulp lifter structure shown in Figure 10-13 on the axial downstream wall of grinder, this grinder is along rotating at the clockwise direction shown in Figure 10-13, and comprise have antetheca 102, radial outer wall 104, inner radial wall 106, axial downstream wall 108 with axial downstream wall 108 substantially parallel interval open and the outer slurry lifter 100 (Figure 10 and 10A) of the midfeather 110 that is connected with the axial downstream wall by curved guide members 112.Wall 102-110 and guiding piece 112 define towards the beholder and to scheming the inlet chamber 115 that open on the right.Antetheca 102 is formed with and transmits mouthful 117 (Figure 10 A), and it provides to lead to and has been limited between midfeather 110 and the axial downstream wall 108 and by the passage of the outlet chamber 116 of guiding piece 112 constraints.Inner radial wall is formed with outlet 119.A plurality of outer slurry lifter shown in Figure 10 and 10A is installed on the axial downstream wall of grinder according to annular array.Be communicated with outlet chamber 116 by the transmission mouth 117 in wall 102 at the inlet chamber 115 of preceding pulp lifter at the disposed slurry lifter at the disposed slurry lifter.
With reference to Figure 11, inner pulp lifter 120 pulp lifter 100 the insides outside is installed on the axial downstream wall of grinder according to annular array.For per two adjacent outer slurry lifters 100, has an inner pulp lifter 120.Each inner pulp lifter 120 comprises axial downstream wall 122 and two radial walls 124, and radial wall 124 is aimed at the antetheca 102 of two adjacent outer slurry lifters 100 respectively.Per two adjacent radial walls 124 of inner pulp lifter define the passage 126 that is communicated with the outlet of outer slurry lifter.Preceding inner pulp lifter back radial wall 124 and the back inner pulp lifter preceding radial wall define with outside the passage that is communicated with of the outlet 119 of slurry lifter.
Pulp lifter structure pulp lifter 120 the insides that also included are installed in displacer 130 on the axial downstream wall of grinder according to the annular array mode.Two radial walls 134 and 136 that each displacer has axial downstream wall 132 and stretches out from wall 132.Each displacer is limited with passing away between two radial wall 134,136, and per two adjacent displacers are limited with passing away between the antetheca 134 of the rear wall 136 of preceding displacer and back displacer.It is to be noted that from Figure 12 antetheca 134 is shorter than rear wall 136 diametrically.Be passed in the wall 136 of preceding displacer and the discharge space that between the wall 136 of back displacer, forms at the passage that limits between two walls 134,136 of displacer with at the wall 134 of preceding displacer with at the passage that limits between the wall 136 of back displacer.Axial downstream wall 132 at the back displacer is formed with opening 136, and it is communicated with the rear wall 136 and the discharge space between the wall 136 of preceding displacer that are limited to the back displacer.
With reference to Figure 13, center liner 140 is installed on the inner pulp lifter 120, and flase floor 150 is installed on the outer slurry lifter 100.
In operation, grinder rotate and outside slurry lifter when arriving 6 o ' clock positions, slurry (can comprise stone) enters the inlet chamber by the opening in flase floor 152.Pulp lifter is when 3 o ' clock positions move outside, outer slurry lifter is with respect to rising at the disposed slurry lifter, and the slurry in the inlet chamber 115 of preceding pulp lifter is by 117 outflows of the transmission mouth in the antetheca of the outer slurry lifter in back and enter into the outlet chamber 116 of that pulp lifter.When grinder was rotated further, the slurry in the outlet chamber of pulp lifter flowed along guiding piece 112 outside, and flows to by the opening in inner radial wall 106 119 in the passage 126 of inner pulp lifter, and finally enters into displacer 130.Most of slurry leaves displacer by opening 138, and moves towards the guide cone (not shown).
Figure 14 and 15 demonstrates discrete element (DEM) computer simulation results is carried out in operation with conventional pulp lifters of trailing edge wall (Figure 14) radially and pulp lifter of the present invention (Figure 15) with curved guide members.Figure 14 demonstrates in pulp lifter to have in the situation of trailing edge wall radially, 10 motions almost do not arrive 12 positions up to pulp lifter to many stones from pulp lifter towards cone, and then for all stones motion before pulp lifter arrives 10 positions to leave for the pulp lifter time not enough, prevented that 10 position rubbing actions stone is further towards cone motion.Therefore, steady-state charge of pebbles remains in the pulp lifter, thereby has reduced the available volume of pulp lifter and may produce slurry pool on the grid upstream side.In the situation of the grinder shown in Figure 15, have in the situation of curved guide members 18 (or 112) in pulp lifter, stone began towards cone motion before pulp lifter arrives 1 position.To arrive the possibility that 10 position stones discharge from pulp lifter very big along with pulp lifter, therefore reduced stone static state and charged into possibility in pulp lifter.Show, the efficient of removing stone in the situation of the pulp lifter shown in Figure 14 in once rotating can be approximately 31%, in the situation of the pulp lifter of Figure 15, the efficient of removing stone in once rotating can be up to being 89%, and this efficient can be improved to 100% by optimizing curved-surface structure.
It being understood that to the invention is not restricted to described just now this specific embodiments, and can make various modification therein not breaking away under the situation of the scope of the invention that claims and equivalent thereof limit.Unless specification indicates in addition, expression to key element situation quantity refers to a situation or an above situation in the claims, at least need pointed key element situation quantity, but do not plan to discharge structure or the method that has than the pointed more key element of manying situation in the scope that accessory rights requires.If used word " to comprise " in this specification or any derivatives of " comprising " or these words, then it is according to comprising rather than the mode of eliminating or limit is used.Therefore, for example parts comprise that the expression of first and second elements do not plan to get rid of the possibility of the parts that comprise one or more attachment element.
Claims (19)
1. pulp lifter, be used for being installed in grinder in the grid downstream, described grid is formed with and allows slurry be passed into pulp lifter so that the hole of removing from grinder by pulp lifter, described pulp lifter has leading edge and trailing edge with respect to the rotation direction of grinder, and comprises:
The first wall device, it limits the inner space; And
Second wall device, it is divided into first and second parts with the inner space,
Wherein, described first wall device comprises the edge wall that is formed with the inlet that the passage that leads to second portion is provided and is formed with and is used for from the inner wall of second portion with the outlet of slurry discharge, second wall device comprises the guiding piece that extends to the rear end of inner wall basically from the outer end of edge wall, and the first of described inner space opens at the trailing edge place of pulp lifter.
2. pulp lifter as claimed in claim 1, wherein, described guiding piece is recessed towards the edge wall of described first wall device.
3. pulp lifter as claimed in claim 2, wherein, described guiding piece is crooked.
4. pulp lifter as claimed in claim 2, wherein, described guiding piece has with respect to the acutangulate outer section of the outer rim of pulp lifter, and has with respect to the acutangulate inner segment of the trailing edge of pulp lifter.
5. pulp lifter as claimed in claim 4, wherein, described guiding piece is crooked, and recessed towards the edge wall of described first wall device.
6. pulp lifter as claimed in claim 1, wherein, described first wall device comprises rear wall, and described second wall device comprises the midfeather of the relation of facing at interval with rear wall, described guiding piece is substantially perpendicular to the rear wall setting, and rear wall is connected with midfeather.
7. pulp lifter as claimed in claim 6, wherein, described midfeather and rear wall extend basically jointly, and midfeather and guiding piece define chamber at the rear side of guiding piece thus, and the first and the second portion of described chamber and inner space separate.
8. pulp lifter as claimed in claim 6, wherein, described midfeather has and the consistent basically trailing edge border of the rear side of guiding piece, and the first of inner space is defined by midfeather, guiding piece and rear wall thus.
9. grinder, it comprises on the downstream that forms porose grid and be installed in grid and distributes so that a plurality of pulp lifter of from grinder slurry being removed round the rotation of grinder, described hole allows slurry to pass grid from the upstream side of grid to the downstream of grid, each pulp lifter has leading edge and trailing edge with respect to the rotation direction of grinder, be respectively in preceding pulp lifter with at the disposed slurry lifter round per two continuous pulp lifter of the rotation of grinder rotation direction, and each pulp lifter comprises with respect to grinder:
The first wall device, it limits the inner space; And
Second wall device, it is divided into first and second parts with the inner space,
Wherein, described first wall device comprises the edge wall that is formed with the inlet that the passage that leads to second portion is provided and is formed with and is used for from the inner wall of second portion with the outlet of slurry discharge, second wall device comprises the guiding piece that extends to the rear end of inner wall basically from the outer end of edge wall, and is communicated with its second portion at the disposed slurry lifter by the opening in the edge wall of disposed slurry lifter in the first of preceding pulp lifter.
10. grinder as claimed in claim 9, wherein, described guiding piece has with respect to the acutangulate outer section of the outer rim of pulp lifter, and has with respect to the acutangulate inner segment of the trailing edge of pulp lifter.
11. grinder as claimed in claim 9, wherein, described first wall device comprises rear wall, and described second wall device comprises the midfeather of the relation of facing at interval with rear wall, and described guiding piece is substantially perpendicular to the rear wall setting, and rear wall is connected with midfeather.
12. grinder as claimed in claim 11, wherein, described midfeather and rear wall extend basically jointly, and midfeather and guiding piece define chamber at the rear side of guiding piece thus, and the first and the second portion of described chamber and inner space separate.
13. grinder as claimed in claim 11, wherein, described midfeather has and the consistent basically trailing edge border of the rear side of guiding piece, and the first of inner space is defined by midfeather, guiding piece and rear wall thus.
14. grinder as claimed in claim 9, wherein, described first wall device comprises rear wall, and in the inner space of preceding pulp lifter by at edge wall, rear wall and the inner wall of preceding pulp lifter, define at the edge wall and the grid of disposed slurry lifter.
15. pulp lifter assembly, be used for being installed in grinder in the grid downstream, described grid is formed with the hole that allows slurry to pass grid to the downstream of grid from the upstream side of grid, described pulp lifter assembly comprises a plurality of adjacent pulp lifter, each pulp lifter has leading edge and trailing edge, per two adjacent pulp lifter are respectively in preceding pulp lifter with at the disposed slurry lifter, and each pulp lifter comprises:
The first wall device, it limits the inner space; And
Second wall device, it is divided into first and second parts with the inner space,
Wherein, described first wall device comprises the edge wall that is formed with the inlet that the passage that leads to second portion is provided and is formed with and is used for from the inner wall of second portion with the outlet of slurry discharge, second wall device comprises the guiding piece that extends to the rear end of inner wall basically from the outer end of edge wall, and is communicated with its second portion at the disposed slurry lifter by the opening in the edge wall of disposed slurry lifter in the first of preceding pulp lifter.
16. pulp lifter assembly as claimed in claim 15, wherein, described first wall device comprises rear wall, and described second wall device comprises the midfeather of the relation of facing at interval with rear wall, described guiding piece is substantially perpendicular to the rear wall setting, and rear wall is connected with midfeather.
17. pulp lifter assembly as claimed in claim 16, wherein, described midfeather and rear wall extend basically jointly, and midfeather and guiding piece define chamber at the rear side of guiding piece thus, and the first and the second portion of described chamber and inner space separate.
18. pulp lifter assembly as claimed in claim 16, wherein, described midfeather has and the consistent basically trailing edge border of the rear side of guiding piece, and the first of inner space is defined by midfeather, guiding piece and rear wall thus.
19. a pulp lifter structure that is used for being installed in grinder, described pulp lifter structure comprises:
Outer slurry lifter, it has leading edge and trailing edge and comprises the first wall device that has defined the inner space and second wall device that the inner space is divided into first and second parts with respect to the direction of rotation of grinder, wherein the first wall device comprises that the edge wall that is formed with the inlet that the passage that leads to second portion is provided is used for from the inner wall of second portion with the outlet of slurry discharge with being formed with, second wall device comprises the guiding piece that extends to the rear end of inner wall basically from the outer end of edge wall, and the first of described inner space opens at the trailing edge place of pulp lifter;
Grid is formed with and is used for allowing slurry be passed into pulp lifter so that the hole of removing from grinder by pulp lifter;
Inner pulp lifter is limited with and is used for the passage that receives slurry and with respect to grinder slurry is radially inwardly carried from the outlet of outer slurry lifter; And
Displacer is used for receiving slurry and discharging slurry from pulp lifter from the passage of inner pulp lifter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69198905P | 2005-06-17 | 2005-06-17 | |
| US60/691,989 | 2005-06-17 | ||
| US11/334,179 | 2006-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101198410A true CN101198410A (en) | 2008-06-11 |
| CN100569377C CN100569377C (en) | 2009-12-16 |
Family
ID=39548335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800217360A Active CN100569377C (en) | 2005-06-17 | 2006-06-05 | Be used for from grinder material equipment of discharging and grinder with this equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100569377C (en) |
| ZA (1) | ZA200710710B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102740980A (en) * | 2010-02-03 | 2012-10-17 | 奥图泰有限公司 | Multi-stage discharger for grinding mills |
| CN103861700A (en) * | 2009-06-16 | 2014-06-18 | 奥图泰有限公司 | Pulp lifter for installation in a rotary grinding mill |
| CN108290162A (en) * | 2015-11-22 | 2018-07-17 | 埃姆斯控股有限责任公司 | Starch lifter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU85767A1 (en) * | 1985-02-08 | 1986-09-02 | Communition Tech Comminutec | DEVICE FOR ADJUSTING THE TIME OF RETENTION OF MATERIAL IN A CRUSHER |
| AUPO083196A0 (en) * | 1996-07-04 | 1996-07-25 | University Of Queensland, The | Twin chamber pulp lifters for grate discharge mills |
| AU2003904343A0 (en) * | 2003-08-15 | 2003-08-28 | Bradken Resources Pty Limited | Discharge cone for grinding mills |
-
2006
- 2006-06-05 CN CNB2006800217360A patent/CN100569377C/en active Active
-
2007
- 2007-12-10 ZA ZA200710710A patent/ZA200710710B/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861700A (en) * | 2009-06-16 | 2014-06-18 | 奥图泰有限公司 | Pulp lifter for installation in a rotary grinding mill |
| CN103861700B (en) * | 2009-06-16 | 2016-09-14 | 奥图泰有限公司 | The pulp lifter being arranged in grindstone |
| CN102740980A (en) * | 2010-02-03 | 2012-10-17 | 奥图泰有限公司 | Multi-stage discharger for grinding mills |
| CN108290162A (en) * | 2015-11-22 | 2018-07-17 | 埃姆斯控股有限责任公司 | Starch lifter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100569377C (en) | 2009-12-16 |
| ZA200710710B (en) | 2008-11-26 |
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