CN102631975B - Sealing device for separator of vertical roller mill - Google Patents
Sealing device for separator of vertical roller mill Download PDFInfo
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- CN102631975B CN102631975B CN2012101142833A CN201210114283A CN102631975B CN 102631975 B CN102631975 B CN 102631975B CN 2012101142833 A CN2012101142833 A CN 2012101142833A CN 201210114283 A CN201210114283 A CN 201210114283A CN 102631975 B CN102631975 B CN 102631975B
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- separator
- rotor
- labyrinth
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- powder
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Abstract
The invention relates to a sealing device for a separator of a vertical roller mill, which is applied to the building material industry, the metallurgical industry, the power plant industry, the chemical industry, the mine industry and the like and relates to engineering machines. In a separation process of the separator, two paths of seals are arranged between a rotor of the separator and a shell of the separator, the interior of the separator is sealed in positive pressure, the exterior of the separator is sealed in a combination manner in the form of a labyrinth, the labyrinth-shaped combined seal consists of an upper seal body and a lower seal body; and the upper seal body and the lower seal body are in a shape of circular ring, one end of each circular ring is a plane and the other end of the circular ring is provided with a plurality of trapezoid rings. The trapezoid rings of the upper seal body and the lower seal body are mutually inserted in opposite trapezoid slots, the circumferences of the trapezoid rings and the trapezoid slots are provided with intervals, the sinuate intervals are in the labyrinth-shaped combined seal. According to the sealing device for the separator of the vertical roller mill, disclosed by the invention, the pass possibility of wind through an interval between the rotor and the shell is completely avoided, the sealing effect is good, the structure is reasonable, and the assembly, the disassembly and the regulation are simple and convenient; and a machining manufacturing process is simple, the cost is low and the popularization application is convenient.
Description
Technical field
The present invention relates to a kind of engineering machinery, the sealing device used on the powder concentrator specifically for the vertical roll grinder of the use in the industries such as building materials, metallurgy, power plant, chemical industry, mine, also can be used for the mechanical rotary seal of miscellaneous equipment analog structure.
Background technology
The operation principle of vertical roll grinder is to utilize active force between grinding roller and mill by the crushing material on mill.Treat that powder material falls mill central authorities by feeding air valve and tremie pipe, the mill that constant speed rotary by means of the effect of centrifugal force will treat powder material outwards dispersed, pave, form certain thickness material bed.Material is subject to rolling of a plurality of grinding rollers on mill and is pulverized.Material after pulverizing constantly moves and leaves mill to the mill outer rim again, material runs into hot gas in air inlet duct is sent into mill and rises thereupon and enter into powder concentrator and carry out sorting, qualified powder finished product enters dust-collecting bin in company with hot gas and collects, defective coarse granule turns back on mill, continues the grinding of a new round.Powder concentrator, in assorting room, has two seals between rotor of powder separator and powder concentrator, and inside is positive seal, and outside is the sealing of combined blade formula.The combined blade formula sealing of using on powder concentrator at present, sealing effectiveness is poor, causes and leaks out, runs the material phenomenon, and the vane type sealing regulates also difficulty, unstable product quality.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the sealing device used on a kind of powder concentrator of vertical roll grinder, outside combination sealing adopts labyrinth-type excluder, and upper seal and lower seal body form; Upper and lower seal is annular, and an end of annulus is plane, and the annulus other end is made many keystone rings.The keystone ring of upper and lower seal is inserted in the other side's dovetail groove mutually, and keystone ring and dovetail groove periphery are all gapped, and this sinuate gap is labyrinth-type excluder.
The present invention is achieved through the following technical solutions: the sealing device used on a kind of powder concentrator of vertical roll grinder, and the sealing device comprises: radial ring seal plate, axial annular seal plate and be arranged on the combination sealing arrangement between diaphragm plate and rotor of powder separator in housing; Described radial ring seal plate periphery is connected with fixed head, and described fixed head is arranged on the interior diaphragm plate of housing.Described axial annular seal plate lower end is fixed on the upper end of rotor of powder separator.Radial ring seal plate and axially gapped between annular seal plate, form zone of positive pressure between described radial ring seal plate, axial annular seal plate, fixed head and rotor of powder separator, described zone of positive pressure connects by the atmosphere outside malleation induced duct and powder concentrator section.It is characterized in that: described combination sealing arrangement is labyrinth-type excluder, described labyrinth-type excluder is comprised of upper seal and lower seal body, described upper and lower seal is annular, and an end of annulus is plane, and the annulus other end is made many keystone rings; The planar ends of upper seal is fixed on the lower end of diaphragm plate in housing by the bolt and nut component I, the planar ends of lower seal body is fixed on the upper end of rotor of powder separator by the bolt and nut component II; The keystone ring of upper and lower seal is inserted in the other side's dovetail groove mutually, described keystone ring and described dovetail groove periphery are all gapped, this sinuate gap is labyrinth-type excluder, and the channel separation between diaphragm plate in the Inner chamber of rotor of powder separator and housing is come.
Good effect of the present invention is:
1, the keystone ring on upper and lower seal and dovetail groove periphery form sinuate gap, have avoided the possibility of wind from passing through between rotor and housing fully, good sealing effect.
2, rational in infrastructure, install, dismantle and regulate simple and convenient.
3, processing technology thereof is simple, with low cost, is convenient to promote the use of.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the powder concentrator structural representation.
The A place partial enlarged drawing that Fig. 2 is Fig. 1.
In figure: 1, radial ring seal plate, 2, axial annular seal plate, 3, rotor of powder separator, 3-1, rotation wind blade, 3-2, flange, 3-3, pillar, 3-4, turning cylinder, 4, fixed head, 5, malleation induced duct, 5-1, zone of positive pressure, 6, the bolt and nut component I, 7, diaphragm plate in housing, 8, upper seal, 9, the lower seal body, 10, the bolt and nut component II, 11, coarse fodder backflow hopper, 12, select the powder feeding-passage, 13, static wind blade, 14, powder concentrator, 15, negative pressure discharging opening, 16, powder-separating area.
The specific embodiment
As shown in Figure 1 and Figure 2: the sealing device used on a kind of powder concentrator of vertical roll grinder, for the mixed material that guarantees powder-separating area all passes through the sorting of cage rotor blade, between rotor of powder separator 3 and powder concentrator 14, two seals is arranged, the sealing device comprises: radial ring seal plate 1, axial annular seal plate 2 and be arranged on the combination sealing arrangement between diaphragm plate 7 and rotor of powder separator 3 in housing; Described radial ring seal plate 1 periphery is connected with fixed head 4, and described fixed head 4 is arranged on the interior diaphragm plate 7 of housing.Described axial annular seal plate 2 lower ends are fixed on the upper end of rotor of powder separator 3; Radial ring seal plate 1 and axial 2 of annular seal plates are gapped.Form zone of positive pressure between described radial ring seal plate 1, axial annular seal plate 2, fixed head 4 and rotor of powder separator 3, described zone of positive pressure connects by 14 outer atmosphere of malleation induced duct 5 and powder concentrator, above structure forms the first sealing, by the carrier frequency channel break between diaphragm plate 7 in the Inner chamber of rotor of powder separator 3 and housing, but also have the part mixed material, pass through.
Second is sealed into combination sealing arrangement, and described combination sealing arrangement is labyrinth-type excluder, and described labyrinth-type excluder is comprised of upper seal 8 and lower seal body 9.Described upper and lower seal 8,9 is annular, and an end of annulus is plane, and the annulus other end is made many keystone rings.The planar ends of upper seal 8 is fixed on the lower end of diaphragm plate 7 in housing by bolt and nut component I 6, the planar ends of lower seal body 9 is fixed on the upper end of rotor of powder separator 3 by bolt and nut component II 10.The keystone ring of upper and lower seal 8,9 is inserted in the other side's dovetail groove mutually, described keystone ring and described dovetail groove periphery are all gapped, this sinuate gap is labyrinth-type excluder, passage between diaphragm plate 7 in the Inner chamber of rotor of powder separator 3 and housing is further blocked, the mixed material of the avoiding possibility that from then on passage passes through, thus play sealing effectiveness more effectively.
As shown in Figure 1 and Figure 2: during use, material after vertical roll grinder is pulverized constantly moves and leaves mill to the mill outer rim, the hot gas that material runs in air inlet duct is delivered to mill rises thereupon, by selecting powder feeding-passage 12 to enter into powder concentrator, at first material is roughly selected by static wind blade 13, and the material of larger particles returns on mill and continues to mill.Material in company with hot gas by static wind blade 13 enters powder-separating area 16 between rotor of powder separator 3 and static wind blade 13, sorting again through over-rotation wind blade 3-1, underproof particle is disallowable and collect and to return to mill and continue to grind, and qualified particle and admixture of gas are from the outlet 15 of separator is discharged and ground.
Described rotor of powder separator 3 forms cylinder cage type framework by multi-disc flange 3-2, many pillar 3-3, cylinder cage type frame perimeter has rotation wind blade 3-1, motor drives cage type rotor of powder separator 3 High Rotation Speeds by turning cylinder 3-4, and the mixed material that enters powder-separating area 16 is carried out to sorting.Because powder concentrator cage rotor periphery is uniformly distributed static wind blade 13, can make air-flow enter uniformly up and down powder-separating area 16, static wind blade 13 carries out roughly selecting of comminuting matter simultaneously.
Claims (1)
1. the sealing device used on the powder concentrator of a vertical roll grinder, the sealing device comprises: radial ring seal plate (1), axial annular seal plate (2) and be arranged on the combination sealing arrangement between the interior diaphragm plate (7) of housing and rotor of powder separator (3); Described radial ring seal plate (1) periphery is connected with fixed head (4), and described fixed head (4) is arranged on the interior diaphragm plate (7) of housing; Described axial annular seal plate (2) lower end is fixed on the upper end of rotor of powder separator (3); Radial ring seal plate (1) and axially gapped between annular seal plate (2); Form zone of positive pressure between described radial ring seal plate (1), axial annular seal plate (2), fixed head (4) and rotor of powder separator (3), described zone of positive pressure connects by malleation induced duct (5) and the atmosphere outside powder concentrator (14) section; It is characterized in that: described combination sealing arrangement is labyrinth-type excluder, and described labyrinth-type excluder is comprised of upper seal (8) and lower seal body (9); Described upper and lower seal (8,9) is annular, and an end of annulus is plane, and the annulus other end is made many keystone rings; The planar ends of upper seal (8) is fixed on the lower end of diaphragm plate (7) in housing by bolt and nut component I (6), the planar ends of lower seal body (9) is fixed on the upper end of rotor of powder separator (3) by bolt and nut component II (10); The keystone ring of upper and lower seal (8,9) is inserted in the other side's dovetail groove mutually, described keystone ring and described dovetail groove periphery are all gapped, this sinuate gap is labyrinth-type excluder, and the channel separation between diaphragm plate (7) in the Inner chamber of rotor of powder separator (3) and housing is come.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101142833A CN102631975B (en) | 2012-04-18 | 2012-04-18 | Sealing device for separator of vertical roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101142833A CN102631975B (en) | 2012-04-18 | 2012-04-18 | Sealing device for separator of vertical roller mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102631975A CN102631975A (en) | 2012-08-15 |
| CN102631975B true CN102631975B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101142833A Expired - Fee Related CN102631975B (en) | 2012-04-18 | 2012-04-18 | Sealing device for separator of vertical roller mill |
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| CN (1) | CN102631975B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909121A (en) * | 2012-11-06 | 2013-02-06 | 四川巨子超微科技有限公司 | Automatic suction type sealing classifier |
| CN102966738B (en) * | 2012-12-05 | 2015-09-09 | 安阳中联海皇水泥有限公司 | The seal arrangement in Vertical Mill transmission scraper plate chamber |
| CN104633129B (en) * | 2015-02-02 | 2016-08-17 | 江苏鹏飞集团股份有限公司 | Exciting device for dust atmosphere seals quiet dish, Moving plate and labyrinth gland |
| CN106944239A (en) * | 2017-05-10 | 2017-07-14 | 南通利元亨机械有限公司 | A kind of sealing ring can adjust powder concentrator separator |
| CN110038688B (en) * | 2019-05-21 | 2024-06-25 | 成都建筑材料工业设计研究院有限公司 | Forced sealing device for rotor and separator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353559A (en) * | 1980-07-23 | 1982-10-12 | Nassau Recycle Corporation | Labyrinth seal |
| CN201225403Y (en) * | 2008-07-25 | 2009-04-22 | 江苏科行环境工程技术有限公司 | Radial labyrinth seal device of large-scale powder concentrator |
| JP2011092849A (en) * | 2009-10-29 | 2011-05-12 | Ihi Corp | Vertical mill |
| CN102192331A (en) * | 2010-03-16 | 2011-09-21 | 上海市离心机械研究所有限公司 | Axial and radial combined sealing device and assembling method thereof |
| CN202010658U (en) * | 2011-05-06 | 2011-10-19 | 桂林恒达矿山机械有限公司 | Ultrafine turbine grading machine |
| CN202527261U (en) * | 2012-04-18 | 2012-11-14 | 徐州飞煌重型机械厂 | Sealing device for powder concentrator of vertical roller mill |
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2012
- 2012-04-18 CN CN2012101142833A patent/CN102631975B/en not_active Expired - Fee Related
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| CN102631975A (en) | 2012-08-15 |
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Granted publication date: 20131204 Termination date: 20160418 |