CN202527261U - Sealing device for powder concentrator of vertical roller mill - Google Patents
Sealing device for powder concentrator of vertical roller mill Download PDFInfo
- Publication number
- CN202527261U CN202527261U CN2012201652155U CN201220165215U CN202527261U CN 202527261 U CN202527261 U CN 202527261U CN 2012201652155 U CN2012201652155 U CN 2012201652155U CN 201220165215 U CN201220165215 U CN 201220165215U CN 202527261 U CN202527261 U CN 202527261U
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Abstract
The utility model discloses a sealing device for a powder concentrator of a vertical roller mill and applied to industries of building materials, metallurgy, power plants, chemical engineering, mines and the like, and relates to engineering machinery. During a separation process of the power concentrator, two seals exist between a rotor of the powder concentrator and a casing of the powder concentrator, positive pressure seal is adopted inside, labyrinth combined seal is adopted outside, the labyrinth combined seal is composed of an upper sealing body and a lower sealing body which are in a circular ring shape, one ends of the circular rings are planes, and a plurality of trapezoid-shaped rings are made at the other ends of the circular rings. The trapezoid-shaped rings of the upper sealing body and the lower sealing body are mutually inserted into trapezoid-shaped grooves of each other, gaps exist on the periphery of the trapezoid-shaped rings and the trapezoid-shaped grooves, and squiggly gaps are the labyrinth seal. The sealing device has the advantages of being good in sealing effect, reasonable in structure, simple and convenient to mount, dismantle and adjust, simple in manufacturing process, low in cost, convenient to popularize and use, and capable of completely avoiding the wind passing between the rotor and the casing.
Description
Technical field
The utility model relates to a kind of engineering machinery, specifically is used for the sealing device that uses on the powder concentrator of vertical roll grinder of use of 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 the active force between grinding roller and the mill that the material on the mill is pulverized.Treat that powder material falls mill central authorities through feeding air valve and tremie pipe, the mill that constant speed is being rotated will treat that by means of action of centrifugal force powder material outwards evenly disperses, paves, forms certain thickness material bed.Material receives on the mill rolling of a plurality of grinding rollers and is pulverized.Material after the pulverizing is again constantly to mill outer rim motion and leave mill; 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 gets into dust-collecting bin in company with hot gas and collects; Defective coarse granule turns back on the mill, continues the grinding of a new round.Powder concentrator has two seals between rotor of powder separator and the powder concentrator housing in assorting room, inside is positive seal, and outside is that the combined blade formula seals.The combined blade formula sealing of using on the 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 utility model provides the sealing device that uses on a kind of powder concentrator of vertical roll grinder, and outside combination sealing adopts labyrinth-type excluder, and last seal and lower seal body are formed; Upper and lower seal is an annular, and an end of annulus is the 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 the dovetail groove each other, and keystone ring and dovetail groove periphery are all gapped, and this sinuate gap is a labyrinth-type excluder.
The utility model is realized through following technical scheme: the sealing device that uses 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 the diaphragm plate and rotor of powder separator in the housing; Described radial ring seal plate periphery is connected with fixed head, and described fixed head is installed 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 the annular seal plate; Form zone of positive pressure between described radial ring seal plate, axial annular seal plate, fixed head and the rotor of powder separator, described zone of positive pressure connects through malleation induced duct and the outer atmosphere of powder concentrator housing section.It is characterized in that: described combination sealing arrangement is a labyrinth-type excluder; Described labyrinth-type excluder is made up of last seal and lower seal body; Described upper and lower seal is an annular, and an end of annulus is the plane, and the annulus other end is made many keystone rings; The planar ends of last seal is fixed on the lower end of diaphragm plate in the housing by the bolt and nut component I, and 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 the dovetail groove each other; Described keystone ring and described dovetail groove periphery are all gapped; This sinuate gap is a labyrinth-type excluder, and the channel separation between the diaphragm plate in the inner chamber of rotor of powder separator and the housing is come.
The good effect of the utility model is:
1, the keystone ring on the upper and lower seal becomes sinuate gap with the dovetail groove contoured, has avoided the possibility of wind from passing through between rotor and the housing fully, good sealing effect.
2, rational in infrastructure, install, dismantle and regulate simple and convenient.
3, processing technology thereof is simple, and is with low cost, is convenient to promote the use of.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain.
Fig. 1 is the powder concentrator structural representation.
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Among the 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, the malleation induced duct; 5-1, zone of positive pressure, 6, the bolt and nut component I, 7, diaphragm plate in the housing, 8, go up seal; 9, 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, the powder concentrator housing, 15, the negative pressure discharging opening, 16, powder-separating area.
The specific embodiment
Like Fig. 1, shown in Figure 2: the sealing device that uses on a kind of powder concentrator of vertical roll grinder; All pass through the sorting of cage rotor blade for the mixed material that guarantees powder-separating area; Between rotor of powder separator 3 and the powder concentrator housing 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 the diaphragm plate 7 and rotor of powder separator 3 in the housing; Described radial ring seal plate 1 periphery is connected with fixed head 4, and described fixed head 4 is installed 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.Described radial ring seal plate 1, axially form zone of positive pressure between annular seal plate 2, fixed head 4 and the rotor of powder separator 3; Described zone of positive pressure connects by 14 outer atmosphere of malleation induced duct 5 and powder concentrator housing; Above structure is formed the sealing of first road; With the carrier frequency channel break between the diaphragm plate 7 in the inner chamber of rotor of powder separator 3 and the housing, pass through but also have partially mixed material.
Second road is sealed into combination sealing arrangement, and described combination sealing arrangement is a labyrinth-type excluder, and described labyrinth-type excluder is made up of with lower seal body 9 last seal 8.Described upper and lower seal 8,9 is an annular, and an end of annulus is the plane, and the annulus other end is made many keystone rings.The planar ends of last seal 8 is fixed on the lower end of diaphragm plate 7 in the housing through bolt and nut component I 6, and the planar ends of lower seal body 9 is fixed on the upper end of rotor of powder separator 3 through bolt and nut component II 10.The keystone ring of upper and lower seal 8,9 is inserted in the other side's the dovetail groove each other; Described keystone ring and described dovetail groove periphery are all gapped; This sinuate gap is a labyrinth-type excluder; Passage between the diaphragm plate 7 in the inner chamber of rotor of powder separator 3 and the housing is further blocked, and the mixed material of avoiding is the possibility passed through of passage from then on, thereby plays sealing effectiveness more effectively.
Like Fig. 1, shown in Figure 2: during use; Material after vertical roll grinder is pulverized is constantly to the motion of mill outer rim and leave mill; The hot gas that material runs in air inlet duct is delivered to mill rises thereupon; Through selecting powder feeding-passage 12 to enter into powder concentrator, material is at first roughly selected by static wind blade 13, and the material of larger particles returns and continues on the mill to mill.The material that passes through static wind blade 13 in company with hot gas gets into powder-separating area 16 between rotor of powder separator 3 and the static wind blade 13; Sorting once more through rotation wind blade 3-1; Underproof particle is disallowable and collect and to return mill and continue to grind, qualified particle and admixture of gas from the outlet 15 of separator discharge grind outside.
Described rotor of powder separator 3 is formed 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 rotation at a high speed through turning cylinder 3-4, and the mixed material that gets into powder-separating area 16 is carried out sorting.The static wind blade 13 because powder concentrator cage rotor periphery evenly distributes can make air-flow get into powder-separating area 16 up and down uniformly, and static wind blade 13 carries out roughly selecting of comminuting matter simultaneously.
Claims (1)
1. the sealing device that uses on the powder concentrator of a vertical roll grinder, the sealing device comprises: radial ring seal plate (1), axially annular seal plate (2) and the combination sealing arrangement that is arranged between interior diaphragm plate (7) of housing and the rotor of powder separator (3); Described radial ring seal plate (1) periphery is connected with fixed head (4), and described fixed head (4) is installed 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 the 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 the rotor of powder separator (3), described zone of positive pressure connects by the atmosphere outside malleation induced duct (5) and powder concentrator housing (14) portion; It is characterized in that: described combination sealing arrangement is a labyrinth-type excluder, and described labyrinth-type excluder is made up of last seal (8) and lower seal body (9); Described upper and lower seal (8,9) is an annular, and an end of annulus is the plane, and the annulus other end is made many keystone rings; The planar ends of last seal (8) is fixed on the lower end of diaphragm plate (7) in the housing by bolt and nut component I (6), and 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 the dovetail groove each other; Described keystone ring and described dovetail groove periphery are all gapped; This sinuate gap is a labyrinth-type excluder, and the inner chamber of rotor of powder separator (3) and the channel separation between the interior diaphragm plate (7) of housing are come.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201652155U CN202527261U (en) | 2012-04-18 | 2012-04-18 | Sealing device for powder concentrator of vertical roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201652155U CN202527261U (en) | 2012-04-18 | 2012-04-18 | Sealing device for powder concentrator of vertical roller mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202527261U true CN202527261U (en) | 2012-11-14 |
Family
ID=47128469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201652155U Withdrawn - After Issue CN202527261U (en) | 2012-04-18 | 2012-04-18 | Sealing device for powder concentrator of vertical roller mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202527261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631975A (en) * | 2012-04-18 | 2012-08-15 | 徐州飞煌重型机械厂 | Sealing device for separator of vertical roller mill |
| CN103883732A (en) * | 2014-02-19 | 2014-06-25 | 合肥中亚建材装备有限责任公司 | Top seal structure for separator of grinding device |
-
2012
- 2012-04-18 CN CN2012201652155U patent/CN202527261U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631975A (en) * | 2012-04-18 | 2012-08-15 | 徐州飞煌重型机械厂 | Sealing device for separator of vertical roller mill |
| CN103883732A (en) * | 2014-02-19 | 2014-06-25 | 合肥中亚建材装备有限责任公司 | Top seal structure for separator of grinding 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: 20121114 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |