CN104069934B - A kind of vertical roll grinder material-returning device - Google Patents
A kind of vertical roll grinder material-returning device Download PDFInfo
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- CN104069934B CN104069934B CN201410183436.9A CN201410183436A CN104069934B CN 104069934 B CN104069934 B CN 104069934B CN 201410183436 A CN201410183436 A CN 201410183436A CN 104069934 B CN104069934 B CN 104069934B
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- powder concentrator
- vertical roll
- roll grinder
- tremie pipe
- returning charge
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Abstract
The present invention relates to a kind of vertical roll grinder material-returning device, be arranged in one in the vertical roll grinder being provided with powder concentrator, inner cone and mill, comprise a returning charge tremie pipe, the feeding end of returning charge tremie pipe is connected with the returns blanking port at powder concentrator top, returning charge tremie pipe is through the fixed blade district of powder concentrator, and the discharge end of returning charge tremie pipe is communicated to mill by inner cone.The present invention effectively controls to return to coarse fodder blanking path, returns are avoided again to be blown into rotor of powder separator gravity treatment by hot blast, improve output and the fineness of powder concentrator, improve the output of vertical roll grinder, reduce powder concentrator fixed blade, rotor blade wearing and tearing, extend the service life of powder concentrator fixed blade, rotor blade.
Description
Technical field
The present invention relates to a kind of material-returning device, particularly relate 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.Fall into inner cone through powder concentrator 1 ' fixed blade 11 ' when returns fall to fall into again on mill.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 the coarse fodder that these are blown into powder concentrator again can reduce powder concentrator grinding efficiency and fineness, accelerates the wearing and tearing of fixed blade, rotor blade, and reduces the output of vertical roll grinder, and energy consumption increases.
Summary of the invention
The object of the present invention is to provide a kind of vertical roll grinder material-returning device, be again blown into rotor of powder separator gravity treatment to avoid returns by hot blast and cause energy consumption to increase and avoid accelerating the wearing and tearing of fixed blade, rotor blade.
To achieve these goals, the invention provides a kind of vertical roll grinder material-returning device, be arranged in one in the vertical roll grinder establishing powder concentrator, inner cone and mill, 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 above described inner cone or stretches into described inner cone inside.
To achieve these goals, the invention provides a kind of vertical roll grinder material-returning device,
The present invention, owing to adopting above technical scheme, compared with prior art, has following advantage and good effect:
1) the present invention effectively controls to return to coarse fodder blanking path, avoids returns to be again blown into rotor of powder separator gravity treatment by hot blast, improves output and the fineness of powder concentrator, improve the output of vertical roll grinder;
2) present invention reduces powder concentrator fixed blade, rotor blade wearing and tearing, extend powder concentrator fixed blade, the service life of rotor blade and the shutdown number of processes of minimizing replacing, improve unit operation rate.
Accompanying drawing explanation
Fig. 1 is the vertical roll grinder of prior art and the structural representation of its material-returning device;
Fig. 2 is the structural representation of vertical roll grinder and its material-returning device in embodiments of the invention;
Fig. 3 is the partial enlarged drawing of vertical roll grinder material-returning device in embodiment of the present invention.
Detailed description of the invention
The present invention is further illustrated with reference to the accompanying drawings with specific embodiment.
As illustrated in figs. 2-3, a kind of vertical roll grinder material-returning device provided by the invention, 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, a charging aperture 9 is had 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, comparatively coarse fodder honed in mill 6 is exported to returns blanking port 10 as returns.
A kind of vertical roll grinder material-returning device provided by the invention 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, and the wear-resistant surface of wearing plate is the inwall of 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, namely pass between the space between any two fixed blades, and the discharge end of returning charge tremie pipe 11 is positioned near above inner cone 2 or stretches into inner cone 2 inside, mill 6 is communicated to by inner cone 2, returns are directly entered mill from returns blanking port and refaces, avoid returns when 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 present invention effectively controls the blanking path of returns; make returns directly from returns blanking port enter reface mill after enter powder concentrator again and select powder; improve output and the fineness of powder concentrator; improve the output of vertical roll grinder; reduce powder concentrator fixed blade, rotor blade wearing and tearing; extend the service life of powder concentrator fixed blade, rotor blade, and reduce the shutdown number of processes changed, thus improve unit operation rate.
Be only specific embodiments of the invention disclosed in above-mentioned, this embodiment is only that clearer explanation the present invention is used, and is not limitation of the invention, and 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 one in the vertical roll grinder being provided with powder concentrator, inner cone and mill, 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, it 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 above described inner cone or stretches into described inner cone inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183436.9A CN104069934B (en) | 2014-05-04 | 2014-05-04 | A kind of vertical roll grinder material-returning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183436.9A CN104069934B (en) | 2014-05-04 | 2014-05-04 | A kind of vertical roll grinder material-returning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104069934A CN104069934A (en) | 2014-10-01 |
| CN104069934B true CN104069934B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410183436.9A Active CN104069934B (en) | 2014-05-04 | 2014-05-04 | A kind of vertical roll grinder material-returning device |
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| CN (1) | CN104069934B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874445B (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 process 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 |
| CN111570023A (en) * | 2020-05-26 | 2020-08-25 | 镇江市蓝火环保能源有限公司 | Energy-saving and environment-friendly pulverized coal production system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2100617A (en) * | 1981-06-26 | 1983-01-06 | Smidth & Co As F L | Edge-runner mill |
| CN1036340A (en) * | 1987-12-24 | 1989-10-18 | 弗·尔·斯米德思公司 | Vertical roller mill |
| CN101380606A (en) * | 2007-09-06 | 2009-03-11 | 上海重型机器厂有限公司 | Bowl type half-speed grinding mill |
| JP2010201399A (en) * | 2009-03-05 | 2010-09-16 | Ihi Corp | Vertical mill |
| CN202387518U (en) * | 2011-12-19 | 2012-08-22 | 陕西斯达实业有限公司 | Large vertical roller mill for ultrafine milling |
| CN203842676U (en) * | 2014-05-04 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Return device of vertical roller mill |
-
2014
- 2014-05-04 CN CN201410183436.9A patent/CN104069934B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2100617A (en) * | 1981-06-26 | 1983-01-06 | Smidth & Co As F L | Edge-runner mill |
| CN1036340A (en) * | 1987-12-24 | 1989-10-18 | 弗·尔·斯米德思公司 | Vertical roller mill |
| CN101380606A (en) * | 2007-09-06 | 2009-03-11 | 上海重型机器厂有限公司 | Bowl type half-speed grinding mill |
| JP2010201399A (en) * | 2009-03-05 | 2010-09-16 | Ihi Corp | Vertical mill |
| CN202387518U (en) * | 2011-12-19 | 2012-08-22 | 陕西斯达实业有限公司 | Large vertical roller mill for ultrafine milling |
| CN203842676U (en) * | 2014-05-04 | 2014-09-24 | 上海宝钢节能环保技术有限公司 | Return device of vertical roller mill |
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|---|---|
| CN104069934A (en) | 2014-10-01 |
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