CN110038688B - Forced sealing device for rotor and separator - Google Patents
Forced sealing device for rotor and separator Download PDFInfo
- Publication number
- CN110038688B CN110038688B CN201910423883.XA CN201910423883A CN110038688B CN 110038688 B CN110038688 B CN 110038688B CN 201910423883 A CN201910423883 A CN 201910423883A CN 110038688 B CN110038688 B CN 110038688B
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- Prior art keywords
- rotor
- separator
- wind
- air
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 239000000843 powder Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009423 ventilation Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention provides a rotor forced sealing device and a separator, which belong to the field of sealing structures, wherein the rotor forced sealing device is used for sealing a gap between a separator rotor and a shell in the separator and comprises an air guide branch pipe and a first wind shielding ring; the air outlets of the air guide branch pipes are parallel to the axial direction of the separator rotor; the first wind-shielding ring is arranged on one side, far away from the separator rotor, of the outlet of the wind-guiding branch pipe, and a first annular sealing space is formed between the first wind-shielding ring and the separator rotor and is used for filling air flow blown out by the wind-guiding branch pipe. The structure can avoid the problem that the mechanical seal is worn, so that the sealing effect is rapidly deteriorated and the powder selecting efficiency is affected. And the sealing effect can be adjusted by the air quantity of the fan, and different ventilation strategies are adopted when the thickness degree of the selected powder is different, so that energy sources are saved.
Description
Technical Field
The invention relates to the field of sealing structures, in particular to a forced sealing device for a rotor and a separator.
Background
Along with the development and maturity of large-scale vertical roller mills, the vertical roller mill is also increasingly widely used, for example, in industries such as cement, coal mine, metallurgy (mineral powder mill) and the like. The higher requirements are put on the separator, and the sealing effect between the top of the rotor blade of the separator and the shell directly influences the powder selecting efficiency and also influences the service life of the rotor of the separator. The traditional separator generally adopts the sealing structure that the sealing ring that fixes on the separator casing and the guide plate that fixes on the rotor formed, because the guide plate area is invariable, and the dust-laden air current is relatively stable, and rotor during operation rotational speed is the change, and when the guide plate can't offset the differential pressure of the inside and outside air current of separator along with the malleation that the rotor produced, the dust-laden air current of separator part will pass through sealed passageway, causes the runing thick. In the case of high fineness requirements of the finished product, the conventional rotor blade top seal structure cannot meet the requirements.
Disclosure of Invention
The invention provides a forced sealing device for a rotor and a separator, and aims to solve the problems of the forced sealing device for the rotor and the separator in the prior art.
The invention is realized in the following way:
A forced sealing device of rotor is used for setting up the gap between sealed separator rotor and body in the separator, including wind-guiding branch pipe and first wind-shielding ring;
The air guide branch pipes are annularly distributed on the outer ring of the separator rotor, and the air outlets of the air guide branch pipes are parallel to the axial direction of the separator rotor;
the first wind shielding ring is arranged on one side, far away from the separator rotor, of the outlet of the air guiding branch pipe, a first annular sealing space is formed between the first wind shielding ring and the separator rotor, and the first annular sealing space is used for filling air flow blown out of the air guiding branch pipe.
In one embodiment of the invention, the air guide device further comprises an air guide main pipe and a fan;
All inlets of the air guide branch pipes are communicated with the air guide main pipe, and air outlets of the fans are communicated with the air guide main pipe.
In one embodiment of the invention, the air guiding branch pipe is connected with the air guiding main pipe flange.
In one embodiment of the invention, the separator further comprises a sealing blade and a second wind shielding ring, wherein the sealing blade is arranged at one end, close to the wind guiding branch pipe, in the axial direction of the separator rotor, the second wind shielding ring is arranged at one side, away from the first wind shielding ring, of the sealing blade, the second wind shielding ring is positioned on the outer ring of the annular baffle plate of the shell, and a second annular sealing space is formed between the annular baffle plate and the second wind shielding ring.
In one embodiment of the invention, the radial thickness of the second annular sealing space is 8-12mm.
A separator comprising a housing, a separator rotor and a rotor positive seal arrangement as described above;
the housing comprises an upper housing part and a lower housing part, the separator rotor is arranged in the lower housing part, and a rotating shaft of the separator rotor extends into the upper housing part from the lower housing part;
The annular baffle is arranged at one end of the upper shell part, which is close to the lower shell part, and the rotating shaft penetrates through the inside of the annular baffle;
the first wind shielding ring in the rotor forced sealing device is fixedly arranged on the inner wall of the lower shell part.
In one embodiment of the invention, a pipe clamp for fixing the air guide main pipe is arranged on the outer wall of the upper shell part;
the upper shell part and the lower shell part are correspondingly provided with mounting holes for the air guide branch pipes to pass through.
The beneficial effects of the invention are as follows: the rotor forced sealing device and the separator provided by the invention can avoid the problems that the mechanical seal is worn, the sealing effect is rapidly deteriorated, and the powder selecting efficiency is affected. And the sealing effect can be adjusted by the air quantity of the fan, and different ventilation strategies are adopted when the thickness degree of the selected powder is different, so that energy sources are saved. In addition, the forced sealing device for the rotor provided by the invention has a simple structure, and can be directly fixed on the existing produced separator to realize application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a separator provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the forced rotor seal assembly of FIG. 1;
Fig. 3 is a schematic diagram of a structure of a fan for guiding air and supplying air to an air guiding branch pipe according to an embodiment of the present invention.
Icon: 001-separator; 100-an upper housing part; 200-a lower housing portion; 110-an annular baffle; 310-fans; 330-an air guide main pipe; 350-air guiding branch pipes; 370-a first wind ring; 390-a second wind deflector ring; 331-pipe clamp; 380-sealing the blade; 010-separator rotor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Examples
This embodiment provides a separator 001, see fig. 1 and 2, such a separator 001 comprising a housing, a separator rotor 010 and a rotor forcing seal.
The housing comprises an upper housing part 100 and a lower housing part 200, the separator rotor 010 is arranged in the lower housing part 200, a rotating shaft of the separator rotor 010 extends into the upper housing part 100 from the lower housing part 200, the rotating shaft is connected with the driving device to drive the rotor to rotate, and an output end of the driving device is arranged in the upper housing part 100 and is matched with the rotating shaft.
The upper housing part 100 is provided with an annular baffle 110 at one end near the lower housing part 200, and the rotating shaft penetrates through the inner ring of the annular baffle 110 and extends into the upper housing part 100.
Since the separator rotor 010 cannot contact the housing when it rotates, a gap is formed between the upper end of the separator rotor 010 and the cover plate of the lower housing part 200, and the sealing effect of the gap directly affects the powder selecting efficiency. In this embodiment, the air wall formed by the rotor forced sealing device is used to seal and prevent powder from entering the gap.
Referring to fig. 2 and 3, the rotor forced sealing device includes a fan 310, a main air guiding pipe 330, a branch air guiding pipe 350 and a first wind shielding ring 370, wherein an air inlet of the main air guiding pipe 330 is communicated with an air outlet of the fan 310. Specifically, a plurality of pipe clamps 331 are circumferentially distributed on the outer wall of the upper housing portion 100, and the air guiding main pipe 330 is clamped into the pipe clamps 331 to achieve fixation.
The inlets of the air guide branch pipes 350 are connected to the side of the air guide main pipe 330 through flanges, and the outlets of all the air guide branch pipes 350 are annularly distributed on the outer ring of the separator rotor 010. Specifically, the upper and lower housing parts 100 and 200 are correspondingly provided with mounting holes through which the outlet ends of the air guide duct 350 extend into the interior of the lower housing part 200.
Due to the arrangement of the main air guiding pipe 330, only one fan 310 is required to provide air flow for all the sub air guiding pipes 350.
The air outlet of the air guide branch pipe 350 is parallel to the axial direction of the separator rotor 010, and the air wall blown out by the air guide branch pipe 350 is blocked outside the separator rotor 010.
In order to guide the wind blown out from the wind-guiding sub-pipe 350, a first wind-shielding ring 370 is welded to the inner wall of the lower housing part 200 at the side of the outlet of the wind-guiding sub-pipe 350 remote from the separator rotor 010. The first wind shielding ring 370 and the separator rotor 010 form a first annular sealing space therebetween, and the first annular sealing space is used for filling the air flow blown out by the air guiding branch pipe 350, and the air flow forms a sealing air wall.
In order to further seal the air from the air guide duct 350, the air is prevented from entering the gap between the upper end of the separator rotor 010 and the cover plate of the lower housing part 200. The forced rotor sealing device further comprises a sealing blade 380 and a second wind shielding ring 390, wherein the sealing blade 380 is arranged at one end of the separator rotor 010, which is close to the air guiding branch pipe 350, in the axial direction, the gap between the sealing blade 380 and the cover body of the lower shell part 200 is controlled to be 8-12mm, the second wind shielding ring 390 is arranged at one side of the sealing blade 380, which is far away from the first wind shielding ring 370, the second wind shielding ring 390 is positioned at the outer ring of the annular baffle 110 of the shell, a second annular sealing space with the radial thickness of 8-12mm is formed between the annular baffle 110 and the second wind shielding ring 390, and the outward airflow formed by the movement of the sealing blade 380 is formed by the following airflow directions: flows out of the second annular seal space into the location of the seal blades 380 without drawing powder into the second annular seal space via the seal blades 380. When the separator rotor 010 rotates, the sealing blades 380 are driven to rotate to form centrifugal air flow, and the air flow flows from the position of the separator rotor 010 to the position of the first wind shielding ring 370, and moves in the axial direction of the separator rotor 010 together with the air flow flowing out of the air guiding branch pipe 350 in the first annular sealing space to form a sealing air wall. The gap space of 8-12mm can avoid mechanical contact as much as possible while saving the manufacturing cost, and the air wall flow speed requirement required by the gap is low, so that the flow speed requirement of fluid can be easily met by a common fan.
The rotor forced sealing device and the separator 001 provided by the invention can avoid the problems that the mechanical seal is worn, the sealing effect is rapidly deteriorated, and the powder selecting efficiency is affected. And the sealing effect can be adjusted by the air quantity of the fan 310, and different ventilation strategies are adopted when the thickness degree of the selected powder is different, so that energy sources are saved. In addition, the forced sealing device for the rotor provided by the invention has a simple structure, and can be directly fixed on the existing produced separator to realize application.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The forced rotor sealing device is used for sealing a gap between a separator rotor and a shell in a separator, and an air outlet of an air guide branch pipe is parallel to the axial direction of the separator rotor;
The plurality of air guide branch pipes are annularly distributed on the outer ring of the separator rotor; the first wind shielding ring is arranged at one side of the outlet of the air guiding branch pipe far away from the separator rotor, a first annular sealing space is formed between the first wind shielding ring and the separator rotor, and the first annular sealing space is used for filling air flow blown out by the air guiding branch pipe; the air guide main pipe and the fan are also included; the inlets of all the air guide branch pipes are communicated with the air guide main pipe, and the air outlets of the fans are communicated with the air guide main pipe; the novel wind-guiding device comprises a shell, and is characterized by further comprising sealing blades and a second wind-shielding ring, wherein the sealing blades are arranged at one end, close to the wind-guiding branch pipe, of the separator rotor in the axial direction, the second wind-shielding ring is arranged at one side, far away from the first wind-shielding ring, of the sealing blades, the second wind-shielding ring is positioned on the outer ring of an annular baffle of the shell, and a second annular sealing space is formed between the annular baffle and the second wind-shielding ring.
2. The rotor force seal assembly of claim 1 wherein said air duct is flanged to said air duct main.
3. The rotor force seal assembly of claim 1 wherein the radial thickness of the second annular seal space is 8-12mm.
4. A separator comprising a housing, a separator rotor and a rotor positive seal arrangement according to claim 1 or 3;
the housing comprises an upper housing part and a lower housing part, the separator rotor is arranged in the lower housing part, and a rotating shaft of the separator rotor extends into the upper housing part from the lower housing part;
The annular baffle is arranged at one end of the upper shell part, which is close to the lower shell part, and the rotating shaft penetrates through the inside of the annular baffle; the first wind shielding ring in the rotor forced sealing device is fixedly arranged on the inner wall of the lower shell part.
5. The separator according to claim 4, wherein a pipe clamp for fixing the air guiding main pipe is arranged on the outer wall of the upper shell part; the upper shell part and the lower shell part are correspondingly provided with mounting holes for the air guide branch pipes to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423883.XA CN110038688B (en) | 2019-05-21 | 2019-05-21 | Forced sealing device for rotor and separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423883.XA CN110038688B (en) | 2019-05-21 | 2019-05-21 | Forced sealing device for rotor and separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110038688A CN110038688A (en) | 2019-07-23 |
| CN110038688B true CN110038688B (en) | 2024-06-25 |
Family
ID=67282895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910423883.XA Active CN110038688B (en) | 2019-05-21 | 2019-05-21 | Forced sealing device for rotor and separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110038688B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201277325Y (en) * | 2008-10-31 | 2009-07-22 | 中天仕名科技集团有限公司 | Rotor sealing device for high-efficiency powder separator |
| CN201728145U (en) * | 2010-06-30 | 2011-02-02 | 合肥中亚建材装备有限责任公司 | Vertical grinder high-fineness dynamic-static combined separator device |
| 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 |
| CN209997713U (en) * | 2019-05-21 | 2020-01-31 | 成都建筑材料工业设计研究院有限公司 | rotor forced sealing device and separator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3372805A (en) * | 1965-12-29 | 1968-03-12 | Microcyclomat Co | Fine particle classifier |
| GB1200996A (en) * | 1968-05-24 | 1970-08-05 | British Rema Mfg Company Ltd | Improvements in or relating to air separators for powders and granular materials |
| CN208786655U (en) * | 2018-08-28 | 2019-04-26 | 江苏羚羊机械有限公司 | A kind of device reducing powder concentrator turbulent flow |
-
2019
- 2019-05-21 CN CN201910423883.XA patent/CN110038688B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201277325Y (en) * | 2008-10-31 | 2009-07-22 | 中天仕名科技集团有限公司 | Rotor sealing device for high-efficiency powder separator |
| CN201728145U (en) * | 2010-06-30 | 2011-02-02 | 合肥中亚建材装备有限责任公司 | Vertical grinder high-fineness dynamic-static combined separator device |
| 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 |
| CN209997713U (en) * | 2019-05-21 | 2020-01-31 | 成都建筑材料工业设计研究院有限公司 | rotor forced sealing device and separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110038688A (en) | 2019-07-23 |
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