CN102161012B - Slotted plate, tube mill having slotted plated and method for manufacturing tube mill - Google Patents
Slotted plate, tube mill having slotted plated and method for manufacturing tube mill Download PDFInfo
- Publication number
- CN102161012B CN102161012B CN201110051768.8A CN201110051768A CN102161012B CN 102161012 B CN102161012 B CN 102161012B CN 201110051768 A CN201110051768 A CN 201110051768A CN 102161012 B CN102161012 B CN 102161012B
- Authority
- CN
- China
- Prior art keywords
- plate
- slotted plate
- slotted
- tube mill
- spaced walls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
- B02C17/06—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with several compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
According to a method for manufacturing a tube mill provided with at least a spacing wall or a discharge wall in the invention, the spacing wall or the discharge wall comprises a plurality of slotted plates. The slotted plates are manufactured in the following steps: a. selecting fully hardened plate materials as source materials for the slotted plates, b. the outer contours of the slotted plates are cut and several slots are introduced in the plate materials using a non-thermal cutting process.
Description
Technical field
The present invention relates to a kind of manufacture method of tube mill, wherein, this tube mill is configured with at least one spaced walls or discharge wall, preferred several spaced walls, and described wall is equipped with polylith slotted plate.The invention still further relates to the slotted plate and tube mill that manufacture according to the method described above.
Background technology
Tube mill is for pulverizing bulk material and for such as cement manufacture.In normally used tube mill structure, tube mill has at least two grinding chambers, and these two grinding chambers are separated from each other by spaced walls, and one of them grinding chamber is used as corase grind room, and another is then used as fine grinding chamber.The abrading-ball for performing crushed work is all provided with in two grinding chambers.Spaced walls is configured with polylith slotted plate, and these slotted plates make the material of pulverizing lead in fine grinding chamber from corase grind room.These slotted plates are so a kind of mode, and make them allow to be passed through by the material fully pulverized, abrading-ball is then stopped.
Due to material to be comminuted and abrading-ball, under slotted plate is exposed to the pressure of high level, thus must be configured to correspondingly wear-resistant.Therefore, the manufacture of slotted plate also relates to a large amount of expenses.
At present, the slotted plate of tube mill manufactures according to two kinds of different manufacture methods, and one side rolled steel manufactures, and another aspect casting technique manufactures.
When manufacturing with rolled steel, first the metal plates manufactured with special milling method is selected, test, and carry out cutting by Methods of OFC-A.Then work in-process is careless or thoughtless by nature and is ground many grooves, so that the main line (gas cutting) after this controlled for taper CNC completes specific identification.After this processing, plate is through middle inspection and cleaning, so that cure operations.The plate distortion occurred in cure operations process must come corresponding by preboarding, and the situation of distortion is in acceptable scope.Cure operations also specially requires has anti-measure processed, to avoid in the region of fastening boring " overvulcanization ".After cure operations completes, need tempering again, for reality use and regulate this plate.
The great disadvantage of the method is, raw-material original microstructure can be changed by gas cutting operation, and every block plate all needs using Technology for Heating Processing (sclerosis+tempering) to readjust after a while.Therefore, different technique can not ensure that slotted plate has uniform microstructure by the gross, because can cause inconsistency occurs.Those techniques may be: for the uneven quench media temperature of cure operations, under uneven hardening temperature and for preventing the non-uniform precautionary measures of the overvulcanization of fastening boring.In addition, effective hardening depth is limited, so that thickness can only be used to be the plate of 50mm to the maximum.
Another shortcoming of the method can be seen from the restriction of channel layout.Groove minimum interval is each other specified, to get rid of the situation of breaking at plate after a while due to cure operations reason.In addition, must keep groove each other and identical relative to the interval at edge, to avoid the hardening depth of ditch groove strip not identical always.If the spaced of groove changes greatly, narrower ditch groove strip may cause because of overvulcanization breaking during operation.
In addition, slotted plate must be manufactured symmetrical in case plate too distortion between hardening period.If still there is plate distortion, when mounting strap frid, sizable distortion can be caused, because screwed fittings must be screwed onto minimum moment, in case screw unclamps during operation.
Therefore, as an alternative, a lot of manufacturer is manufactured by casting method.But casting method requires all must provide casting pattern and suitable fusing to every block slotted plate.After casting operation, must plate be cleaned, remove sprue surface and checked whether crack.This casting method also requires to heat-treat subsequently.In addition, the rear side of plate must grind, and leans against on scaffold to guarantee that this plate is flat.
Therefore, when those are also slotted plates, the original microstructure of the founding materials of every block plate needs to be made adjustment by heat treatment after a while.Therefore, plate producer can not ensure that slotted plate by the gross has uniform microstructure, because scrambling above-mentioned also can here occur.
From the viewpoint of foundry engieering, the thickness making plate is needed to remain minimum.Corresponding restriction also causes the situation of the situation at the interval between groove and whole channel layout.Particularly troublesome is that the rear side of grinding plate is to guarantee that plate fully contacts scaffold.Otherwise not getting rid of plate can break.Compared with the slotted plate of rolled steel manufacture, cast sheet must keep sizable residual wall thickness to prevent plate from breaking.
DE19638698 discloses a kind of grinding machine spaced walls, and it comprises spaced walls plate, and this plate tectonice archwise is also fixed on wall framework by fitting strip, and this spaced walls plate has the edge notches formed with flame failure method.
In addition, DE102007046193 describes a kind of as backplate or the plate as the wearing terrain for worm spiral shape thing, wherein in order to manufacture described plate, sprays cutting mode from cutout section metallizing carrier with water.
Summary of the invention
Therefore, the object of this invention is to provide a kind of manufacture new method of tube mill, wherein, this tube mill has spaced walls or discharge wall, and described wall comprises polylith slotted plate, the manufacture of slotted plate allows the design of larger change with the homogeneous microstructure of whole slotted plate for feature.
Of the present invention for the manufacture of having in the method for tube mill of at least one spaced walls or discharge wall, described spaced walls or discharge wall comprise polylith slotted plate, and these slotted plate following methods steps manufacture:
A. select the plate material that hardens completely as the raw material of described slotted plate, and
B. by non-method for hot cutting, particularly water sprays cutting method, cuts the exterior contour of described slotted plate and arrange some grooves on described slotted plate.
Raw-material original microstructure can not be changed by non-method for hot cutting.Therefore, do not need hardening again to slotted plate after a while.As a result, also can not there is undesired distortion in slotted plate, thus be no longer concerned about whether slotted plate has symmetrical configuration.Therefore complete newly-designed possibility is obtained.
According to the present invention, the direct plate material manufactured in steel mill under the optimal cases of the production line (comprising sclerosis) remained unchanged and always monitor can be used in.As a result, for all tasks (charges), material property is made file and determines.Therefore, the uncertainty of microstructure can in fact be got rid of.
Because the plate material hardened completely can use hard but ductile material, during design, the larger free degree can be obtained.Can be fabricated to now operation tube mill and there is the plate of best channel layout.This layout does not rely on symmetry completely, because no longer need cure process after a while, and does not need to consider the restriction about foundry engieering.Therefore, due to the form of scaffold, especially non-essential groove can be avoided.
According to a preferred configuration of the present invention, thus at least some slotted plate is configured with the groove of the longitudinal central axis line asymmetric arrangement relative to slotted plate.In addition, the groove of some slotted plates can manufacture the groove with intervals different each other.Every block slotted plate also may arrange more grooves, and this will improve the function of spaced walls or discharge wall.
Because no longer need other cure step, there is the suitable materials of required hardness by selection and very accurately can determine the requirement hardness of slotted plate.
Owing to forming groove by non-thermal energy method, the method almost has nothing to do with the thickness of plate.In theory, can produce now at least 40mm to the plate of (such as) 100mm.Thicker plate material can to the effect correspondingly having front the service life of slotted plate.
Because non-method for hot cutting does not need to harden after a while again, therefore material is not easy to break, especially fastening bore area.This can optimize the fastening configuration of plate.Such as, can pierce in slotted plate by multiple fastening boring, described multiple fastening boring is the form of holes drilled through, and is configured with the blind boring of diameter increase.
The invention still further relates to the slotted plate manufactured according to the method described above, and relate to the tube mill with spaced walls or discharge wall, wherein, described spaced walls or discharge wall comprise this slotted plate of polylith.
Accompanying drawing explanation
Other structure of the present invention and advantage will be described in detail below with reference to accompanying drawing.In the accompanying drawings,
Fig. 1 is the schematic side elevation of tube mill,
Fig. 2 is the view of the slotted plate of spaced walls section,
Fig. 3 is the view of the section of the scaffold of spaced walls, and
Fig. 4 is the sectional view along the fastening boring region that A-A line intercepts in Fig. 2.
Detailed description of the invention
Tube mill 1 shown in Fig. 1 consists essentially of corase grind room 2 and fine grinding chamber 3, and these two grinding chambers are separated by spaced walls 4.The polylith slotted plate 5 that spaced walls 4 has scaffold 6 and is fixed in this spaced walls.This tube mill also arranges the tapping equipment 8 with discharge wall 8a.
Tube mill 1 has cylindrical outer wall and is bearing in an appropriate manner in the bearing 9 and 10 that can rotate around axle 11.Two grinding chambers 2,3 are worked by suitable abrading-ball, and first the material carried by conveying device 7 is pulverized in corase grind room 2.Fine grinding chamber 3 is entered by slotted plate 5, to pulverize further there by the material fully pulverized.The material ground is by discharging wall 8a and tapping equipment 8 is removed.
Spaced walls 4 and discharge wall 8a can have similar structure, therefore, hereafter the mode being only relevant to spaced walls 4 pairs of slotted plates are described in more detail.
Fig. 2 illustrates the section of the spaced walls 4 seen of presenting oneself before (a monarch) from corase grind room 2.Polylith slotted plate 5 is arranged concentrically around axis 11, and covers whole spaced walls haply.Only in center, slotted plate is not set.This region can be used as gas channel.
The mounted slotted plate of every block is edge limited by two radial arc borders of lateral edges and upper and lower.Its exterior contour is relative to (radial direction) longitudinal central axis line 5b symmetrically form.Slotted plate is also configured with multiple tracks groove 5a, and the end of per pass groove has with a certain distance from lateral boundaries edge, and is preferably oriented to by per pass groove vertical with longitudinal central axis line 5b.
Arrive the respective section of scaffold 6 as seen from Figure 3, this illustrates from fine grinding chamber 3 to spaced walls 4.Scaffold 6 for restraint zone frid 5, and has recessed portion 6a in the region of each slotted plate 5, and this recessed portion is that a kind of like this form is so that can see all groove 5a of the slotted plate 5 being contained in opposite side in figure 3.The profile of the recessed portion of scaffold 6 is suitable for the operation cycle in tube mill.In the embodiment shown in the drawing, the slotted plate 5 of multiple recessed portion 6a and association is arranged on three rings, described in be periphery and be set to mutually with one heart, the profile of these recessed portions 6a and the channel layout of relevant slotted plate 5 different in different circle permutation.Even if in a specific ring, the channel layout of two adjacent recessed portion 6a and relevant slotted plate 5 is also always arranged to each other in specular way.
Usually with screw, slotted plate 5 is fixed on scaffold 6.For this purpose, slotted plate 5 is provided with suitable holes drilled through 5c, and this holes drilled through (groove enlarged drawing is shown in Figure 4) is configured with the blind boring 5d that diameter increases in addition.In scaffold 6, boring 6b is arranged on corresponding position, makes it possible to be fastened on scaffold 6 by slotted plate by suitable screw/nut.Blind boring 5d mono-aspect can make slotted plate keep fixing, head of screw can be prevented on the other hand to be projected into trench wall external cause and expose and wear and tear.
When fabricated ribbon frid 5, first, select the suitable plate material hardened completely as raw material.Select the hardness needed for slotted plate of raw material overriding concern polishing.Such as, the metallic plate of 500HV is at least as consideration using abrasion hardness.
Subsequently, the exterior contour of slotted plate 5 and the non-method for hot cutting of groove 5a, particularly cut with water injection method.Non-method for hot cutting can not cause microstructure to change, and does not thus need hardening to slotted plate after a while again.
Known for the manufacture of in the method for slotted plate so far, it is needs that groove extends symmetrically relative to longitudinal central axis line 5b, otherwise can not avoid extra distortion between hardening period.When adopting non-method for hot cutting, owing to not needing to harden in addition, groove also can extend relative to longitudinal central axis line 5b asymmetrically, and this can prove immediately from the most of slotted plate shown in Fig. 2.For most of slotted plate, opening 6a is always in so a kind of mode, that is, it is operation optimization, and has asymmetric profile relative to longitudinal central axis line 5b.This situation as a result, originally some groove have living space not by opening, be therefore configured to unnecessary longer length.According to new method, then without the need to considering symmetrical problem, groove can be made at the very start to be applicable to the opening of scaffold, thus to avoid unnecessary long otch.
Another advantage of non-method for hot cutting is, the groove 5a of slotted plate also can be arranged to the different interval of phase mutual, thus can be operation optimization form.Especially different intervals can be seen when the slotted plate radially arranged.
The plate thickness of slotted plate plays key effect the service life to slotted plate.Thus thicker plate had longer service life before being replaced.Owing to needing to carry out cure operations after a while in previous manufacture method, therefore thickness be restricted to close to 50mm.Thickness also may be used now from the even thicker plate material of 40 to 100mm.
Therefore, the feature of this new manufacturing method is also there is the larger free degree in the layout and configuration of groove.
Claims (9)
1. there is at least one spaced walls or discharge wall (4, the manufacture method of tube mill (1) 8a), described spaced walls or discharge wall comprise polylith slotted plate (5), and wherein, described slotted plate (5) manufactures according to following operation:
A. select the plate material that hardens completely as the raw material of described slotted plate (5), and
B. cut the exterior contour of described slotted plate (5) by non-method for hot cutting and on described plate material, introduce groove (5a).
2. the method for claim 1, is characterized in that, slotted plate described at least some (5) is provided with groove (5a), and described channel layout becomes asymmetric relative to the longitudinal central axis line (5b) of described slotted plate.
3. the method for claim 1, is characterized in that, the groove (5a) of slotted plate described at least some (5) is arranged to there is different intervals each other.
4. the method according to any one of claim 1-3, is characterized in that, described slotted plate (5) the plate material manufacture selected, and does not need extra cure step.
5. the method according to any one of claim 1-3, is characterized in that, the requirement hardness of the described slotted plate (5) selecting raw-material hardness that it is corresponded to will to manufacture.
6. the method according to any one of claim 1-3, is characterized in that, uses plate thickness to be at least the plate material of 40mm.
7. the method according to any one of claim 1-3, it is characterized in that, multiple fastening boring pierced in described slotted plate (5), described multiple fastening boring is the form of holes drilled through (5c), and is configured with the blind boring (5d) of diameter increase.
8. according to the slotted plate (5) that the method described in aforementioned claim manufactures.
9. there is at least one spaced walls or discharge wall (4, tube mill (1) 8a), described spaced walls or discharge wall comprise multiple slotted plate (5), and wherein said slotted plate (5) manufactures according to the method described in aforementioned claim 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010008808.0 | 2010-02-22 | ||
| DE102010008808.0A DE102010008808B4 (en) | 2010-02-22 | 2010-02-22 | Method for producing a tube mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102161012A CN102161012A (en) | 2011-08-24 |
| CN102161012B true CN102161012B (en) | 2015-07-22 |
Family
ID=44063534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110051768.8A Expired - Fee Related CN102161012B (en) | 2010-02-22 | 2011-02-22 | Slotted plate, tube mill having slotted plated and method for manufacturing tube mill |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2361687B1 (en) |
| CN (1) | CN102161012B (en) |
| AT (1) | ATE551121T1 (en) |
| DE (1) | DE102010008808B4 (en) |
| ES (1) | ES2381331T3 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19638698A1 (en) * | 1996-09-20 | 1998-03-26 | Pfeiffer Christian Maschf | Mill partition |
| DE102007046193A1 (en) * | 2007-09-26 | 2009-04-02 | Schrage, Otto, Dipl.-Ing. | Tile for use as e.g. plate, for spiral screw of decanting centrifuge, has carrier with hard coating formed as wear layer and made of material e.g. chromium oxide, aluminum oxide, titanium oxide, chromium carbide or tungsten carbide |
| CN201346483Y (en) * | 2009-01-08 | 2009-11-18 | 范荣明 | Partition plate and discharge screen of ball mill |
-
2010
- 2010-02-22 DE DE102010008808.0A patent/DE102010008808B4/en not_active Expired - Fee Related
- 2010-12-02 EP EP10193498A patent/EP2361687B1/en not_active Not-in-force
- 2010-12-02 AT AT10193498T patent/ATE551121T1/en active
- 2010-12-02 ES ES10193498T patent/ES2381331T3/en active Active
-
2011
- 2011-02-22 CN CN201110051768.8A patent/CN102161012B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19638698A1 (en) * | 1996-09-20 | 1998-03-26 | Pfeiffer Christian Maschf | Mill partition |
| DE102007046193A1 (en) * | 2007-09-26 | 2009-04-02 | Schrage, Otto, Dipl.-Ing. | Tile for use as e.g. plate, for spiral screw of decanting centrifuge, has carrier with hard coating formed as wear layer and made of material e.g. chromium oxide, aluminum oxide, titanium oxide, chromium carbide or tungsten carbide |
| CN201346483Y (en) * | 2009-01-08 | 2009-11-18 | 范荣明 | Partition plate and discharge screen of ball mill |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2381331T3 (en) | 2012-05-25 |
| EP2361687B1 (en) | 2012-03-28 |
| ATE551121T1 (en) | 2012-04-15 |
| DE102010008808A1 (en) | 2011-08-25 |
| CN102161012A (en) | 2011-08-24 |
| EP2361687A1 (en) | 2011-08-31 |
| DE102010008808B4 (en) | 2014-08-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20210222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |