CN203842676U - Return device of vertical roller mill - Google Patents
Return device of vertical roller mill Download PDFInfo
- Publication number
- CN203842676U CN203842676U CN201420222687.9U CN201420222687U CN203842676U CN 203842676 U CN203842676 U CN 203842676U CN 201420222687 U CN201420222687 U CN 201420222687U CN 203842676 U CN203842676 U CN 203842676U
- Authority
- CN
- China
- Prior art keywords
- powder concentrator
- vertical roll
- roll grinder
- inner cone
- tremie pipe
- 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.)
- Withdrawn - After Issue
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to a return device of a vertical roller mill. The return device is arranged in a vertical roller mill in which a powder concentrator, an inner cone and an abrasive disk are arranged; the return device comprises a returned material feed pipe; the feed end of the returned material feed pipe is connected with a returned material falling opening formed in the top of the powder concentrator; the returned material feed pipe goes through a fixed blade region of the powder concentrator, and the discharge end of the returned material feed pipe is communicated with the abrasive disc by virtue of the inner cone. The return device is capable of effectively controlling the falling path of the returned coarse materials and avoiding the returned materials from being re-blown in the powder concentrator by hot air for reselection, and therefore, the yield of the powder concentrator and the fineness are improved, the yield of the vertical roller mill is improved, the abrasion of the fixed blade and the rotor blade of the powder concentrator is reduced, and the service lives of the fixed blade and the rotor blade of the powder concentrator are prolonged.
Description
Technical field
The utility model relates to a kind of material-returning device, relates in particular to a kind of vertical roll grinder material-returning device.
Background technology
Vertical roll grinder is generally made up of powder concentrator 1 ', inner cone 2 ', main drive 3 ', some grinding rollers 4 ', grinding roller seat 5 ', mill 6 ', housing 7 ', finished product discharging opening 8 ' and charging aperture 9 ', powder concentrator 1 ' top is provided with material returns entrance 10 ', as shown in Figure 1.When returns fall, falling into inner cone through powder concentrator 1 ' fixed blade 11 ' falls on mill again.Returns are when through powder concentrator fixed blade district, and a part of coarse fodder is blown into rotor of powder separator gravity treatment (a is hot blast direction) again by hot blast.The shortcoming of this kind of method is that these coarse fodders that are again blown into powder concentrator can reduce powder concentrator grinding efficiency and fineness, accelerates the wearing and tearing of fixed blade, rotor blade, and has reduced the output of vertical roll grinder, and energy consumption increases.
Utility model content
The purpose of this utility model is to provide a kind of vertical roll grinder material-returning device, causes energy consumption to increase and avoids accelerating the wearing and tearing of fixed blade, rotor blade to avoid returns to be again blown into rotor of powder separator gravity treatment by hot blast.
To achieve these goals, the utility model provides a kind of vertical roll grinder material-returning device, be arranged in the vertical roll grinder of establishing powder concentrator, inner cone and mill in one, comprise a returning charge tremie pipe, the feeding end of described returning charge tremie pipe is connected with the returns blanking port at described powder concentrator top, described returning charge tremie pipe is through the fixed blade district of described powder concentrator, and the discharge end of described returning charge tremie pipe is communicated to described mill by described inner cone.
Preferably, described returning charge tremie pipe is combined by connector and pipeline, and described connector connects described returns blanking port.
Preferably, described pipeline is made up of wearing plate.
Preferably, the discharge end of described returning charge tremie pipe is positioned near described inner cone top or stretches into described inner cone inside.
To achieve these goals, the utility model provides a kind of vertical roll grinder material-returning device,
The utility model, owing to adopting above technical scheme, compared with prior art, has following advantage and good effect:
1) the utility model is effectively controlled and is returned to coarse fodder blanking path, avoids returns to be again blown into rotor of powder separator gravity treatment by hot blast, has improved output and the fineness of powder concentrator, has improved the output of vertical roll grinder;
2) the utility model has reduced powder concentrator fixed blade, rotor blade wearing and tearing, has extended powder concentrator fixed blade, the service life of rotor blade and the shutdown number of processes that minimizing is changed, and has improved unit operation rate.
Brief description of the drawings
Fig. 1 be prior art vertical roll grinder with and the structural representation of material-returning device;
Fig. 2 be in embodiment of the present utility model vertical roll grinder with and the structural representation of material-returning device;
Fig. 3 is the partial enlarged drawing of vertical roll grinder material-returning device in embodiment of the present utility model.
Detailed description of the invention
Further illustrate the utility model with specific embodiment with reference to the accompanying drawings.
As shown in accompanying drawing 2-3, a kind of vertical roll grinder material-returning device that the utility model provides, be arranged in a vertical roll grinder, vertical roll grinder is generally by powder concentrator 1, inner cone 2, main drive 3, some grinding rollers 4, grinding roller seat 5, mill 6, housing 7 and finished product discharging opening 8 form, powder concentrator 1 comprises fixed blade district 14 and movable vane section 15, there is a charging aperture 9 on vertical roll grinder top, one returns blanking port 10 is arranged at the top of powder concentrator 1, mill 6 has discharging opening to be connected with returns blanking port 10 by conveying equipment below, export to returns blanking port 10 compared with coarse fodder as returns using what ground in mill 6.
A kind of vertical roll grinder material-returning device that the utility model provides comprises a returning charge tremie pipe 11, and in the present embodiment, returning charge tremie pipe 11 is combined by connector 12 and pipeline 13, and connector 1 connects returns blanking port 10.Preferably, in order to reduce the wearing and tearing of returns material to pipeline, pipeline is welded by wearing plate, the inwall that the wear-resistant surface of wearing plate is pipeline.In the present embodiment, connector adopts adpting flange, but is not limited to this.
The feeding end of returning charge tremie pipe 11 is connected with the returns blanking port at powder concentrator 1 top, returning charge tremie pipe is through the fixed blade district 14 of powder concentrator, from between the space between any two fixed blades, pass, and the discharge end of returning charge tremie pipe 11 is positioned near inner cone 2 tops or stretches into inner cone 2 inside, be communicated to mill 6 by inner cone 2, returns are directly entered mill and refaced from returns blanking port, avoid returns in the time of the fixed blade district through powder concentrator, part coarse fodder is blown into rotor of powder separator gravity treatment again by hot blast, as shown in Figure 2, a is hot blast direction.
The utility model is effectively controlled the blanking path of returns; make returns directly enter and enter again powder concentrator after refacing mill and select powder from returns blanking port; output and the fineness of powder concentrator are improved; improve the output of vertical roll grinder; powder concentrator fixed blade, rotor blade wearing and tearing are reduced; extend the service life of powder concentrator fixed blade, rotor blade, and reduced the shutdown number of processes of changing, thereby improved unit operation rate.
Above-mentioned disclosed be only specific embodiment of the utility model, this embodiment is only that clearer explanation the utility model is used, and not to restriction of the present utility model, the changes that any person skilled in the art can think of, all should drop in protection domain.
Claims (4)
1. a vertical roll grinder material-returning device, be arranged in the vertical roll grinder that is provided with powder concentrator, inner cone and mill in, it is characterized in that, comprise a returning charge tremie pipe, the feeding end of described returning charge tremie pipe is connected with the returns blanking port at described powder concentrator top, described returning charge tremie pipe is through the fixed blade district of described powder concentrator, and the discharge end of described returning charge tremie pipe is communicated to described mill by described inner cone.
2. a kind of vertical roll grinder material-returning device as claimed in claim 1, is characterized in that, described returning charge tremie pipe is combined by connector and pipeline, and described connector connects described returns blanking port.
3. a kind of vertical roll grinder material-returning device as claimed in claim 2, is characterized in that, described pipeline is made up of wearing plate.
4. a kind of vertical roll grinder material-returning device as claimed in claim 1, is characterized in that, the discharge end of described returning charge tremie pipe is positioned near described inner cone top or stretches into described inner cone inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222687.9U CN203842676U (en) | 2014-05-04 | 2014-05-04 | Return device of vertical roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222687.9U CN203842676U (en) | 2014-05-04 | 2014-05-04 | Return device of vertical roller mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203842676U true CN203842676U (en) | 2014-09-24 |
Family
ID=51555740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420222687.9U Withdrawn - After Issue CN203842676U (en) | 2014-05-04 | 2014-05-04 | Return device of vertical roller mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203842676U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069934A (en) * | 2014-05-04 | 2014-10-01 | 上海宝钢节能环保技术有限公司 | Returning device of vertical roller mill |
| CN109174320A (en) * | 2018-09-10 | 2019-01-11 | 中国矿业大学 | A kind of roller medium speed coal mill device |
| CN109963654A (en) * | 2016-11-15 | 2019-07-02 | 诺曼艾索工艺技术有限公司 | Grinding machine |
-
2014
- 2014-05-04 CN CN201420222687.9U patent/CN203842676U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069934A (en) * | 2014-05-04 | 2014-10-01 | 上海宝钢节能环保技术有限公司 | Returning device of vertical roller mill |
| CN104069934B (en) * | 2014-05-04 | 2016-03-09 | 上海宝钢节能环保技术有限公司 | A kind of vertical roll grinder material-returning device |
| CN109963654A (en) * | 2016-11-15 | 2019-07-02 | 诺曼艾索工艺技术有限公司 | Grinding machine |
| CN109963654B (en) * | 2016-11-15 | 2022-04-12 | 诺曼艾索工艺技术有限公司 | Grinding machine |
| CN109174320A (en) * | 2018-09-10 | 2019-01-11 | 中国矿业大学 | A kind of roller medium speed coal mill device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140924 Effective date of abandoning: 20160309 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |