CN204061912U - Seal ring and coal pulverizer - Google Patents
Seal ring and coal pulverizer Download PDFInfo
- Publication number
- CN204061912U CN204061912U CN201420442977.4U CN201420442977U CN204061912U CN 204061912 U CN204061912 U CN 204061912U CN 201420442977 U CN201420442977 U CN 201420442977U CN 204061912 U CN204061912 U CN 204061912U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- air
- running shaft
- suction port
- air outlet
- 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.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 abstract description 9
- 239000002817 coal dust Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920001967 Metal rubber Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- Disintegrating Or Milling (AREA)
Abstract
The utility model discloses a kind of seal ring and coal pulverizer, wherein, sealing ring set is located at running shaft (4) and is gone up and form Spielpassung, suction port (2) and air outlet (3) are provided with in described seal ring, air flow chamber (1) is formed between this suction port (2) and air outlet (3), described suction port (2) connects high-pressure air source, the gas of this high-pressure air source enters described air flow chamber (1) from described suction port (2) and outwards flows out from described air outlet (3), the air-flow of outside outflow formed be used for preventing foreign material from entering described seal ring and described running shaft (4) outer circumferential face between annular clearance space in air curtain.By arranging jet-impingement structure being sheathed on the seal ring on running shaft, the air-flow sprayed can form air curtain between seal ring and the outer surface of running shaft, the structure preventing from the foreign material such as dust from entering seal ring sealing, avoids the foreign material such as running shaft and dust friction damage.
Description
Technical field
The utility model relates to a kind of sealing configuration, particularly, relates to a kind of seal ring and is provided with the coal pulverizer of sealing ring.
Background technique
Coal pulverizer is for coal crusher being worn into the engineering mechanism of coal dust, in its working procedure, producing coal dust airborne dust.If coal dust enters the bearing chamber of grinding roller, then can cause bearing damage, affect the normal operation of coal pulverizer, therefore need to seal the bearing of grinding roller.
The grinding roller bearing seal of coal pulverizer is domestic does not at present have very good way to solve all the time, and now basic what adopt is that the way that external import metal-rubber seal ring individual pen sealed inside applies blast seals, and rubber seal normal wear also has coal dust and enters.During regular stoppage in transit in every month, in order to the remaining coal dust in descaling machine needs to carry out purging in machine with fire-fighting high-temperature gas, owing to being high-temperature gas, rubber ring in grinding roller all will bear high temperature at every turn, make cushion rubber accelerated ageing reduction of service life, make coal dust enter bearing chamber and damage bearing, so seal ring changed by maintenance coal pulverizer of monthly will rotating at regular intervals.
In view of this, the sealing configuration providing a kind of sealing effect good is needed.
Model utility content
Problem to be solved in the utility model is to provide the good sealing configuration of a kind of sealing effect.
In addition, the problem that the utility model also will solve is to provide a kind of coal pulverizer, and the sealing configuration for the grinding roller bearing sealing this coal pulverizer can prevent coal dust from entering bearing structure.
In order to solve the above problem, the utility model provides a kind of seal ring, wherein, sealing ring set to be located on running shaft and to be formed Spielpassung, suction port and air outlet is provided with in described seal ring, air flow chamber is formed between this suction port and air outlet, described suction port connects high-pressure air source, the gas of this high-pressure air source enters described air flow chamber from described suction port and outwards flows out from described air outlet, and the air-flow outwards flowed out forms the air curtain in the annular clearance space between the outer circumferential face for preventing foreign material from entering described seal ring and described running shaft.
Preferably, described air outlet is obliquely installed towards the outer circumferential face of described running shaft.
Preferably, the angle of the outflow direction of the exit flow of described air outlet and the axis of described running shaft is 50 °-55 °.
Preferably, described air outlet is the circumferential weld structure formed continuously along the circumference of described seal ring.
Preferably, described seal ring is formed as double-sleeve structure, and described suction port and air outlet are formed on the barrel of the outer sleeve of described seal ring, and described air flow chamber is the annular chamber in described double-sleeve structure.
Preferably, described seal ring is Split type structure.
Preferably, described suction port is 2 or more.
In addition, the utility model additionally provides a kind of coal pulverizer, comprise grinding roller, grinding roller bearing and O-ring seal, wherein, described coal pulverizer also comprises the seal ring according to above any one scheme, and sealing ring set to be located on the grinding roller as described running shaft and between described grinding roller and O-ring seal.
Pass through technique scheme, by arranging jet-impingement structure being sheathed on the seal ring on running shaft, the air-flow sprayed can form air curtain between seal ring and the outer surface of running shaft, the structure preventing from the foreign material such as dust from entering seal ring sealing, avoids the foreign material such as running shaft and dust friction damage.
Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the sectional view be installed on according to the seal ring of a kind of embodiment of the present utility model on running shaft.
Fig. 2 is the cut-away view of the seal ring according to a kind of embodiment of the present utility model.
Description of reference numerals
1 air flow chamber 2 suction port
3 air outlet 4 running shafts
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1, the utility model provides a kind of seal ring, wherein, sealing ring set to be located on running shaft 4 and to be formed Spielpassung, suction port 2 and air outlet 3 is provided with in described seal ring, air flow chamber 1 is formed between this suction port 2 and air outlet 3, suction port 2 connects high-pressure air source, the gas of this high-pressure air source enters air flow chamber 1 from suction port 2 and outwards flows out from air outlet 3, and the air-flow outwards flowed out forms the air curtain in the annular clearance space between the outer circumferential face for preventing foreign material from entering described seal ring and running shaft 4.
For there is gap between the bearing of supporting rotating shaft 4 and running shaft, extraneous dust can enter in gap the normal rotating operation affecting running shaft 4.After seal ring of the present utility model is installed in the one or both sides of running shaft 4; between described seal ring and the outer surface of running shaft 4, air curtain is formed by the high velocity air ejected by described seal ring; can stop that the foreign material such as dust enter the gap between running shaft 4 and bearing, protection running shaft 4 and bearing are not damaged.
Usually, the gas that air outlet 3 is sprayed can be parallel to the cross section of running shaft 4, or can towards the lopsidedness relative with bearing (such as shown in Fig. 1 towards left bank).Preferably, air outlet 3 is obliquely installed towards the outer circumferential face of running shaft 4, and the air-flow towards lopsidedness can produce resistance, more effectively prevents the foreign material such as dust from entering gap.In this structure, between running shaft 4 and bearing, negative pressure can be produced.
Further, the angle of the outflow direction of the exit flow of air outlet 3 and the spin axis of running shaft 4 is 50 °-55 °, with be parallel to running shaft 4 cross section direction and be parallel to running shaft 4 axis direction on produce enough large resistance simultaneously, prevent the foreign material such as dust from entering bearing play.
Air outlet 3 can be the through hole that the multiple and air flow chamber of circumferentially arranging is communicated with, and at this, air outlet 3 preferably along the circumferential weld structure that the circumference of described seal ring is formed continuously, thus makes the uniform stream ejected be distributed on the periphery of running shaft 4.
Particularly, described seal ring is formed as double-sleeve structure, and suction port 2 and air outlet 3 are formed on the barrel of the outer sleeve of described seal ring, and air flow chamber 1 is the annular chamber in described double-sleeve structure.Institute's predication double-sleeve structure is concentric and cavity structure that two of different-diameter cylinder intervals and two ends sealing are formed, and suction port 2 can be arranged on the larger outer wall of diameter, and air outlet 3 can be arranged on the inwall that diameter comparatively goes up.
For the ease of processing and fabricating, described seal ring is Split type structure.Especially, above-described circumferential weld structure can be that two parts are spaced formation.
In addition, suction port 2 can be 2 or more, makes the pressure distribution in air flow chamber 1 even.Especially, the position of suction port 2 can be the form shown in Fig. 2, and to make the flow rotation entering annular airflow chamber 1, thus the air-flow ejected in the air outlet 3 of circumferential weld structure is the form rotated, and reaches sealing effect better.
In addition, the utility model additionally provides a kind of coal pulverizer, comprise grinding roller, grinding roller bearing and O-ring seal, wherein, described coal pulverizer also comprises the seal ring according to above any one scheme, and sealing ring set to be located on the grinding roller as running shaft 4 and between described grinding roller and O-ring seal.By this kind of structure, the coal dust produced can be blocked in the outside of bearing in working procedure, prevent coal dust from forming the normal operation of grinding roller.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. seal ring, it is characterized in that, sealing ring set is located at running shaft (4) and is gone up and form Spielpassung, suction port (2) and air outlet (3) are provided with in described seal ring, air flow chamber (1) is formed between this suction port (2) and air outlet (3), described suction port (2) connects high-pressure air source, the gas of this high-pressure air source enters described air flow chamber (1) from described suction port (2) and outwards flows out from described air outlet (3), the air-flow of outside outflow formed be used for preventing foreign material from entering described seal ring and described running shaft (4) outer circumferential face between annular clearance space in air curtain.
2. seal ring according to claim 1, is characterized in that, described air outlet (3) are obliquely installed towards the outer circumferential face of described running shaft (4).
3. seal ring according to claim 2, is characterized in that, the angle of the outflow direction of the exit flow of described air outlet (3) and the spin axis of described running shaft (4) is 50-55 °.
4. seal ring according to claim 1, is characterized in that, described air outlet (3) are the circumferential weld structure formed continuously along the circumference of described seal ring.
5. seal ring according to claim 1, it is characterized in that, described seal ring is formed as double-sleeve structure, described suction port (2) and air outlet (3) are formed on the barrel of the outer sleeve of described seal ring, and described air flow chamber (1) is the annular chamber in described double-sleeve structure.
6. seal ring according to claim 5, is characterized in that, described seal ring is Split type structure.
7. seal ring according to claim 4, is characterized in that, described suction port (2) is 2 or more.
8. coal pulverizer, comprise grinding roller, grinding roller bearing and O-ring seal, it is characterized in that, described coal pulverizer also comprises according to the seal ring in claim 1-7 described in any one, and sealing ring set to be located on the grinding roller as described running shaft (4) and between described grinding roller and O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442977.4U CN204061912U (en) | 2014-08-07 | 2014-08-07 | Seal ring and coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420442977.4U CN204061912U (en) | 2014-08-07 | 2014-08-07 | Seal ring and coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061912U true CN204061912U (en) | 2014-12-31 |
Family
ID=52203431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420442977.4U Expired - Lifetime CN204061912U (en) | 2014-08-07 | 2014-08-07 | Seal ring and coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204061912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794324A (en) * | 2019-01-16 | 2019-05-24 | 潍坊正远粉体工程设备有限公司 | A kind of powder crushes, integrated shaping machine and its work head |
| CN110656900A (en) * | 2019-09-29 | 2020-01-07 | 中煤科工集团重庆研究院有限公司 | Non-contact sealing structure and non-contact drilling dust extraction cover |
-
2014
- 2014-08-07 CN CN201420442977.4U patent/CN204061912U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794324A (en) * | 2019-01-16 | 2019-05-24 | 潍坊正远粉体工程设备有限公司 | A kind of powder crushes, integrated shaping machine and its work head |
| CN109794324B (en) * | 2019-01-16 | 2024-08-16 | 潍坊正远粉体工程设备有限公司 | Powder crushing and shaping integrated machine and working head thereof |
| CN110656900A (en) * | 2019-09-29 | 2020-01-07 | 中煤科工集团重庆研究院有限公司 | Non-contact sealing structure and non-contact drilling dust extraction cover |
| CN110656900B (en) * | 2019-09-29 | 2020-12-01 | 中煤科工集团重庆研究院有限公司 | Non-contact drilling dust extraction cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
|
| CX01 | Expiry of patent term |