CN204865996U - Technical grading grinding structure that vertical roller ground - Google Patents
Technical grading grinding structure that vertical roller ground Download PDFInfo
- Publication number
- CN204865996U CN204865996U CN201520397078.1U CN201520397078U CN204865996U CN 204865996 U CN204865996 U CN 204865996U CN 201520397078 U CN201520397078 U CN 201520397078U CN 204865996 U CN204865996 U CN 204865996U
- Authority
- CN
- China
- Prior art keywords
- mill
- grinding
- grinding roller
- feed back
- roller
- 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.)
- Active
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a technical grading grinding structure that vertical roller ground, vertical roller grind 2 at least toper grinding rollers and mill of being equipped with evenly distributed, and main aspects are equipped with the annular groove in the middle section outside including the toper grinding roller tip, be formed with the annular bulge rather than the interlock at mill and the toper grinding roller middle section relative position of annular groove, in the mill regional broken district that form one -level new feed relative with toper grinding roller tip, at mill annular bulge regional the form milling zone relative with toper grinding roller middle section annular groove, grind the finishing district regional formation the that mill and toper grinding roller main aspects are corresponding, the milling zone is relative with the export of feed back pipe, and the import and the feed back mouth of selection powder machine of feed back pipe are connected, and the place ahead of every toper grinding roller sets up a feed back pipe. The utility model discloses under the condition of not spraying water, can improve the stability of operation in grinding, improve grinding efficiency, improve product quality, reduce the power consumption.
Description
Technical field
The utility model belongs to grinding technology field, particularly a kind of technical grading grinding structure of vertical roller grinder.
Background technology
Vertical roller grinder is called for short Vertical Mill, and its grinding principle is bed of material grinding, and namely by mutually extruding the grinding realizing material between particle and particle, grinding process controllability is good, and mill efficiency is high.The grinding structure that vertical roller grinder adopts at present is: new feeding and powder concentrator feed back mix in the middle part of feeding mill by feed bin under gravity, mill rotating band animal material rotates, material under the influence of centrifugal force by the middle part of mill to mill border movement, time below material movement to grinding roller, under the acting in conjunction of collet and grinding roller pressure, grinding roller pressing materials (bed of material), material is by grinding, material after grinding crosses collet under the influence of centrifugal force, leave mill, fall under gravity into vane, brought into the powder concentrator on grinding machine top subsequently by high velocity air upwards in vane, qualified finished product is walked by powder concentrator choosing, underproof bulky grain enters feed bin through the feedback outlet of powder concentrator, return mill after mixing with new feeding and continue grinding, until the finished product that grinding becomes release mesh to require.
Bed of material grinding guarantees that efficient prerequisite is: the bed of material is stablized.Vertical roller grinder grinding unit existing structure is when the material of the bed of material good stabilities such as pulverizing cement raw material, slag, mill efficiency is high, but work as pulverizing cement, especially when grinding height silicon (grog proportioning >=85%) and pure silicon cement, Vertical Mill exposes the problems such as vibration is large, system power consumption is high, main frame electric current is low, its main cause is: when grinding height silicon or pure silicon cement, because mill feed material grindability is deteriorated, in dish material loading, semi-finished granules (45 ~ 80 μm) content increases, the mobility of the bed of material improves, unstability, and the prerequisite of bed of material grinding is lost.When therefore will solve grinding height silicon or pure silicon cement Vertical Mill vibration large, yield poorly, the problem such as power consumption is high, key is the mill efficiency problem solving cement semi-finished product.
The problem such as large for the vibration exposed when vertical roller grinder grinding height silicon or pure silicon cement, power consumption is high, the way generally adopted in the world is: adopt the measure of water spray in mill to alleviate, but water spray has adverse effect to performance indications such as strengths of cement in mill, therefore study not under water spray condition vertical roller grinder grinding height silicon or pure silicon cement technology very necessary.
Traditional vertical roller grinder adopts combined grinding structure, powder concentrator feed back feeds above mill after mixing in feeding bin above mill with new feeding again, new feeding layer on mill can be caused like this before by grinding roller grinding, to be mingled with a large amount of fine powder, the bad stability of the bed of material, and mill efficiency reduces.
Summary of the invention
The utility model provides a kind of technical grading grinding structure of vertical roller grinder for solving in known technology the technical problem that exists, adopt this structure, under the condition that Vertical Mill is not sprayed water in mill, the stability of operation can be improved, improve mill efficiency, improve product quality, reduce power consumption.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is: a kind of technical grading grinding structure of vertical roller grinder, described vertical roller grinder is provided with equally distributed at least 2 taper grinding rollers and a mill, at interior large end outside, the stage casing of described taper grinding roller is provided with annular groove to described taper grinding roller small end; The annular projection be engaged with described taper grinding roller stage casing annular groove is formed at the position that described mill is relative with taper grinding roller stage casing annular groove, the fracture area of the new feeding of one-level is formed in the region that described mill is relative with taper grinding roller small end, the region relative with described taper grinding roller stage casing annular groove at mill annular projection forms milling zone, is formed grind Runout area in the region that described mill is corresponding with the large end of taper grinding roller; Described milling zone is relative with the outlet of feed back pipe, the described import of feed back pipe is connected with the feedback outlet of powder concentrator, the quantity of described feed back pipe is identical with the quantity of described taper grinding roller, and all described feed back pipes are evenly arranged, and the front of each described taper grinding roller arranges a described feed back pipe.
At 30 ° ~ 45 °, the front place of each described taper grinding roller, a described feed back pipe is set.
Pyramidal structure is adopted to be connected with grinding district in the middle part of described mill.
The advantage that the utility model has and good effect are: in grinding district, form milling zone by adopting the mill of the taper grinding roller of band technical grading structure and band technical grading structure, feed back pipe is connected at the feedback outlet of powder concentrator by adopting, and the structure making the outlet of feed back pipe relative with milling zone, stable for the restriction vertical roller grinder bed of material thinner two stage materials returned from powder concentrator are separated from the new feeding bed of material, feeding milling zone concentrates grinding, can guarantee that the grinding of two stage materials has higher efficiency on the one hand, the stability of the new feeding bed of material on mill can be improved on the other hand, improve the mill efficiency of new feeding.In sum, adopt this structure, under the condition that vertical roller grinder is not sprayed water in mill, the stability of operation can be improved, improve mill efficiency, improve product quality, reduce power consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 2, a kind of technical grading grinding structure of vertical roller grinder, described vertical roller grinder is provided with equally distributed at least 2 taper grinding rollers and a mill, and at interior large end outside, the stage casing of described taper grinding roller is provided with annular groove to described taper grinding roller small end; The annular projection be engaged with described taper grinding roller stage casing annular groove 12 is formed at the position that described mill is relative with taper grinding roller stage casing annular groove 12, the fracture area 23 of the new feeding of one-level is formed in the region that described mill is relative with taper grinding roller small end 13, the region relative with described taper grinding roller stage casing annular groove 12 at mill annular projection forms milling zone 22, is formed grind Runout area 21 in the region that described mill is corresponding with the large end of taper grinding roller 11.
Described milling zone 22 is relative with the outlet of feed back pipe 4, the described import of feed back pipe 4 is connected with the feedback outlet of powder concentrator, the quantity of described feed back pipe 4 is identical with the quantity of described taper grinding roller, all described feed back pipes 4 are evenly arranged, and the front of each described taper grinding roller arranges a described feed back pipe 4.
The vertical roller of the utility model grinds existing mill and taper grinding roll structure improves, and grinding roller and mill are equipped with clear and definite technical grading structure.Grinding roller is divided into the grinding roller small end 13 mainly bearing crushing function, the grinding roller stage casing annular groove mainly bearing grinding function in the width direction and mainly bears the large end 11 of grinding roller of grinding and particle correction of the flank shape function.Mill is corresponding with grinding roller is also divided into three functional areas, forms tooth form occlusion structure as shown in Figure 1, increases resistance and the milling area of bed of material flowing.
In this case, the specific works process of above-mentioned technical grading grinding structure is:
Refer to Fig. 1, the new feeding of one-level feeds in the middle part of mill by feed bin above mill 3, mill rotating band Moving plate material loading rotates, lump material under the influence of centrifugal force by the middle part of mill to mill border movement, in time moving to grinding roller small end 13 place, the block bed of material is because fine powder amount is few, the bed of material is stablized, and crushing efficiency is high; Two stage materials returned by powder concentrator are no longer with the new feeding mixing of one-level, but collected by independently feed back pipe 4, in grinding roller front feeding milling zone 22, in milling zone 22, two stage materials returned by powder concentrator and the new feeding mixed grinding of the one-level be broken, because structure band is trench structure herein, bed of material restricted in flow, two stage materials obtain concentrating grinding, and grinding efficiency is high; Under the influence of centrifugal force, the material through grinding continues to move, in this region to grinding Runout area 21, the trench structure of the bed of material also therefore regional structure band, restricted in flow, obtains high-efficient grinding and correction of the flank shape, finally under centrifugal action, cross collet 5, leave mill and complete grinding process.Then enter powder concentrator to carry out selecting powder.
The technical grading grinding structure of above-mentioned vertical roller grinder forms primarily of three kinds of functional parts: the feed back pipe 1) returning material for collecting powder concentrator; 2) structure band grading grinding roller; 3) structure band classification mill.In above-mentioned three kinds of functional parts, feed back pipe 4 is Core Feature elements, also be main innovate point of the present utility model, what feed back pipe 4 can not only determine that bed of material classification grinding realizes whether, and may can derive multiple grinding roller and the mill structural variant that can realize classification grinding function.
The concentrated grinding of the present embodiment energy effective implemention secondary fines, significantly improves mill efficiency, especially the mill efficiency of fine powder (particle diameter 80 μm), theoretical calculation model structural parameters and the results are shown in Table 1.
Table 1 combined grinding structure index theoretical value and classification grinding structure index theoretical value
The grinding district of vertical roller grinder has been carried out function division clearly by the present embodiment, adopt feed back pipe by powder concentrator feed back feeding milling zone, in conjunction with the principle of bed of material grinding, from the angle of restriction bed of material flowing, trench structure design is carried out to different functional bands, with the stable bed of material, improve mill efficiency, especially make the mill efficiency of secondary fine powder be improved significantly, refer to table 1.The present embodiment compared with the existing technology, is conducive to improving the stability that vertical roller grinder runs, and increase yield, reduces system power consumption, improves product quality.
The front of each described taper grinding roller arranges 1 described feed back pipe, can realize multiple spot feeding and concentrate grinding.Above-mentioned feed back pipe 4 is preferably arranged in 30 ° ~ 45 °, the front place of taper grinding roller, can shorten the idle stroke of two stage materials.In this enforcement, feed back pipe 4 is arranged in 30 °, the front place of taper grinding roller.Adopt pyramidal structure to be connected with grinding district in the middle part of mill, to accelerate the speed that material moves to grinding district, improve mill efficiency.
The utility model derives from cement vertical roller grinder, but is not limited to cement vertical roller grinder, can be applicable in the vertical roller grinders such as cement slurry, slag, coal, petroleum coke, superfine grinding.
Although be described preferred embodiment of the present utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, can also make a lot of form, these all belong within protection domain of the present utility model.
Claims (3)
1. the technical grading grinding structure of a vertical roller grinder, described vertical roller grinder is provided with equally distributed at least 2 taper grinding rollers and a mill, described taper grinding roller small end at interior large end outside, is characterized in that, the stage casing of described taper grinding roller is provided with annular groove; The annular projection be engaged with described taper grinding roller stage casing annular groove is formed at the position that described mill is relative with taper grinding roller stage casing annular groove, the fracture area of the new feeding of one-level is formed in the region that described mill is relative with taper grinding roller small end, the region relative with described taper grinding roller stage casing annular groove at mill annular projection forms milling zone, is formed grind Runout area in the region that described mill is corresponding with the large end of taper grinding roller; Described milling zone is relative with the outlet of feed back pipe, the described import of feed back pipe is connected with the feedback outlet of powder concentrator, the quantity of described feed back pipe is identical with the quantity of described taper grinding roller, and all described feed back pipes are evenly arranged, and the front of each described taper grinding roller arranges a described feed back pipe.
2. the technical grading grinding structure of vertical roller grinder according to claim 1, is characterized in that, arranges a described feed back pipe at 30 ° ~ 45 °, the front place of each described taper grinding roller.
3. the technical grading grinding structure of vertical roller grinder according to claim 1, is characterized in that, adopts pyramidal structure to be connected with grinding district in the middle part of described mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520397078.1U CN204865996U (en) | 2015-06-10 | 2015-06-10 | Technical grading grinding structure that vertical roller ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520397078.1U CN204865996U (en) | 2015-06-10 | 2015-06-10 | Technical grading grinding structure that vertical roller ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204865996U true CN204865996U (en) | 2015-12-16 |
Family
ID=54810430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520397078.1U Active CN204865996U (en) | 2015-06-10 | 2015-06-10 | Technical grading grinding structure that vertical roller ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204865996U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874443A (en) * | 2015-06-10 | 2015-09-02 | 天津水泥工业设计研究院有限公司 | Graded milling structure of vertical roller grinder |
| CN105833946A (en) * | 2016-04-27 | 2016-08-10 | 江苏方天电力技术有限公司 | Medium-speed coal mill with novel grinding bowl structure |
| CN107321446A (en) * | 2017-08-08 | 2017-11-07 | 江苏鹏飞集团股份有限公司 | The vertical pulverizer lapping device of twin-stage grinding |
-
2015
- 2015-06-10 CN CN201520397078.1U patent/CN204865996U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874443A (en) * | 2015-06-10 | 2015-09-02 | 天津水泥工业设计研究院有限公司 | Graded milling structure of vertical roller grinder |
| CN104874443B (en) * | 2015-06-10 | 2017-06-23 | 天津水泥工业设计研究院有限公司 | A kind of classification grinding structure of vertical roller grinder |
| CN105833946A (en) * | 2016-04-27 | 2016-08-10 | 江苏方天电力技术有限公司 | Medium-speed coal mill with novel grinding bowl structure |
| CN107321446A (en) * | 2017-08-08 | 2017-11-07 | 江苏鹏飞集团股份有限公司 | The vertical pulverizer lapping device of twin-stage grinding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204865994U (en) | Hierarchical grinding structure that vertical roller ground | |
| CN104874443A (en) | Graded milling structure of vertical roller grinder | |
| CN103521333B (en) | A kind of to pulverize and two-stage sorting process and pulverizing and two-stage separation system | |
| CN203291915U (en) | Ultrafine powder differential swing arm roller grinding machine | |
| CN204865996U (en) | Technical grading grinding structure that vertical roller ground | |
| CN106076574A (en) | A kind of double closed-circuit grinding technique of ball mill producing slag super fine | |
| CN104211312A (en) | Cement outer-circulating semi-finish grinding system of vertical mill | |
| CN105080698A (en) | Vertical roller mill system and milling process thereof | |
| CN102732652A (en) | Superfine grinding method for steel slag slurry | |
| CN204865997U (en) | Hierarchical grinding structure of parallelly connected grinding unit that vertical roller ground | |
| CN204865995U (en) | Hierarchical grinding structure of double -deck mill that vertical roller ground | |
| CN209061251U (en) | A kind of novel vertical mill staged grinding liner plate | |
| CN201990603U (en) | Cement close-circuit powder grinding system | |
| CN204768893U (en) | Wheat milling equipment | |
| CN104874445A (en) | Graded milling process of vertical roller grinder | |
| CN103495482A (en) | Smashing and sorting technology as well as smashing and sorting system | |
| CN204974022U (en) | Lime stone milling equipment | |
| CN105344446A (en) | Roller press pregrinding system adopting light grinding medium | |
| CN204058266U (en) | A kind of cement outer circulation Vertical Mill half final grinding system | |
| CN104261707B (en) | A kind of cement outer circulation Vertical Mill preparation system of grain size adjustable distribution | |
| CN203269799U (en) | Cement production device | |
| CN205903948U (en) | Grinding device for cement manufacture | |
| CN203874885U (en) | Vertical type roller mill system | |
| CN211303254U (en) | A strideing over formula material that is used for machine-made sand to grind production immediately and is kept off and discharge device | |
| CN102600931A (en) | Vertical type pin roll winnowing mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |