CN201353562Y - Main shaft structure - Google Patents
Main shaft structure Download PDFInfo
- Publication number
- CN201353562Y CN201353562Y CNU200820180465XU CN200820180465U CN201353562Y CN 201353562 Y CN201353562 Y CN 201353562Y CN U200820180465X U CNU200820180465X U CN U200820180465XU CN 200820180465 U CN200820180465 U CN 200820180465U CN 201353562 Y CN201353562 Y CN 201353562Y
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- China
- Prior art keywords
- hermetically
- sealed construction
- main axle
- housing
- cover
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Abstract
The utility model provides a main shaft structure for a rotary sieve, which comprises a main shaft, a bearing and a bearing sleeve. A conical part is arranged at one end of the main shaft, and a making plate is arranged at the other end thereof; a packing auger is arranged between the conical part and the making plate; the conical part, the packing auger and the making plate are integrated structures which are symmetrical along the radial direction of the axis of the main shaft; and the bearing is sleeved on the conical part in an interference fit way. By adopting the main shaft structure, the defects that the traditional rotary sieve can be not assembled, disassembled and cleaned easily, the precision is hard to be ensured, the temperate at the bearing part is higher, and the powder pollution occurs, and the like can be overcome.
Description
Technical field
The utility model relates to a kind of main axle structure, more particularly, relates to a kind of main axle structure that is used for rotary screen.
Background technology
Among the powder material preparation technology, the control of material particular diameter is directly connected to the quality of end product quality, especially for powdery paints preparation and application, because the manufacturing of powder can produce the thick particle of part unavoidably, therefore powder diameter requires to be controlled in the very narrow distribution, just can obtain the appearance of surface smoothing, so rotary screen is one of vital parts in the powder spray coating device.And in actual production, the powder color replacement is frequent, therefore, convenient dismounting, is easy to cleaning, is the very harsh requirement to powdery paints preparation and application, also is one of main judging quota of equipment success or failure and performance quality.
The most of multiple bearing supports main shaft structure of crossing over the screen cloth two ends that adopts of rotary screen in the tradition is fixed by multi-point support, the dismounting and cleaning very complicated, and precision is not easy to guarantee.The cantilevered main axle structure is also arranged, but dismounting and cleaning is very inconvenient abroad, and the bearing portions temperature is very high, easily causes the vitrifying caking of powdery paints.In addition, the situation that main axle structure of the prior art also exists powder to pollute, the service life of seriously having reduced bearing.
The utility model content
For overcoming the above-mentioned defective in the existing equipment, first purpose of the present utility model is to provide a kind of new-type cantilevered rotary screen main axle structure, this main axle structure can be broken through the deficiency of traditional multiple bearing supporting construction, is easy to dismounting, can improve the precision stability of rotary screen.
Second purpose of the present utility model is bearing holder (housing, cover) is carried out novel design, with the fricative heat of timely discharge bearing portion and reduce the powder glass phase transformation may.
The 3rd purpose of the present utility model is that strict control powder enters bearing portion, avoids powder to pollute, and it is stuck to stop the powder curing main shaft, improves bearing service life.
According to an aspect, the utility model provides a kind of novel main axle structure that is used for rotary screen, this main axle structure comprises main shaft, bearing and bearing holder (housing, cover), wherein, one end of described main shaft is the tapering, and the other end is provided with and re-packs, described tapering and re-pack between be provided with auger, described tapering, auger and re-pack and be the integrative-structure along the main-shaft axis radial symmetric, described bearing is sleeved on the described tapering in the mode of interference fit.
According to further improvement of the utility model, described re-pack and auger adopt full smooth transition.
According to another aspect, be provided with cooling structure according to the bearing holder (housing, cover) of main axle structure of the present utility model.According to a preferred embodiment, described cooling structure is the helicla flute that is arranged on the outer peripheral edges of described bearing holder (housing, cover).Described helicla flute can be rectangular coil groove or triangle helicla flute.
According to further improvement of the utility model, be set with cooling jacket on the described bearing holder (housing, cover).
According to further improvement of the utility model, described cooling jacket is provided with cooling medium inlet and cooling medium outlet.
According to another aspect of the present utility model, described auger is arranged in the sieve nest, and between described bearing and sieve nest, hermetically-sealed construction is set.
According to further improvement of the utility model, described hermetically-sealed construction is the level Four combined sealing structure, described level Four combined sealing structure comprises: first order hermetically-sealed construction is the sealing ring that is sleeved on the described bearing holder (housing, cover), second level hermetically-sealed construction is the labyrinth gland that cooperates with described cooling jacket and described bearing holder (housing, cover), third level hermetically-sealed construction is the pressurized seal between described cooling jacket and the described labyrinth gland, fourth stage hermetically-sealed construction is the high speed combination sealing between described labyrinth gland and the described bearing holder (housing, cover), wherein, the described first order to third level hermetically-sealed construction sets gradually along the direction from the tapering that re-packs, and described fourth stage hermetically-sealed construction is arranged on the below of described third level hermetically-sealed construction.
According to further improvement of the utility model, described sealing ring is the VS sealing ring.
For above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, concrete preferred embodiment cited below particularly, and cooperate appended accompanying drawing to be elaborated.
Description of drawings
Fig. 1 is a structural representation of using the rotary screen of main axle structure of the present utility model.
Fig. 2 is the partial sectional view of main axle structure of the present utility model.
Fig. 3 is the front view according to rotary screen main shaft of the present utility model.
Fig. 4 is another partial sectional view of main axle structure of the present utility model.
The specific embodiment
As shown in Figure 1, the rotary screen of using main axle structure of the present utility model mainly is made up of main shaft 1, screen drum 3, sieve nest 4, finished product discharge bucket 5, meal discharging opening 6, motor 7 and belt pulley 8,9.Wherein, an end of described main shaft 1 is tapering 20, and the other end is provided with and re-packs 2, described tapering 20 and re-pack and be provided with auger 19 between 2, as shown in Figure 3.Tapering 20, auger 19 and re-pack 2 for along the integrative-structure of main-shaft axis radial symmetric, this integrative-structure adopts 360 ° of radial symmetric distributed materials when global design, can reduce unbalancing value to greatest extent, and the stationary vibration of turning round is little.Re-pack 2 and auger 19 adopt full smooth transition, no dead angle and slit are easy to the cleaning of powder especially.
Described main axle structure also comprises the bearing 21 that is sleeved on the tapering 20.The standard Morse's taper is adopted in tapering 20, mode with interference fit connects with bearing 21, thereby realized that on the one hand no gap cooperates, guaranteed the highest assembly precision, the running runout error that auger is re-packed drops to minimum, be easy to dismounting on the other hand especially, be better than all rotary screen main shaft fit structures.
Described main axle structure also comprises the bearing holder (housing, cover) 10 that is sleeved on the bearing 21, and this bearing holder (housing, cover) 10 is provided with cooling structure.According to a preferred embodiment of the present utility model, described cooling structure can be arranged on the rectangular coil groove 18 on the bearing holder (housing, cover) 10, as shown in Figure 2.According to another embodiment of the present utility model, described helicla flute can be leg-of-mutton.
As shown in Figure 2, be set with cooling jacket 11 on the bearing holder (housing, cover) 10, this cooling jacket 11 is provided with cooling medium inlet 16 and cooling medium outlet 17.The cooling medium of all gases or liquid is entered by inlet 16, through helicla flute 18 the fricative heat of bearing portion is constantly taken away, and is flowed out from exporting 17.Pressure cooling medium and flow adopt auto-associating control, thereby can the strict temperature rise of controlling main shaft and body.
First order hermetically-sealed construction adopts the sealing ring 13 that is sleeved on the described bearing holder (housing, cover), and the sealing circle can be the VS sealing ring.VS sealing ring 13 can at utmost limit the leakage of powder on the one hand, can guarantee again that on the other hand the heat of moving contact friction generation is less, and the replacing mounting or dismounting of VS sealing ring 13 are very convenient;
Second level hermetically-sealed construction adopts and cooling jacket 11 and the bearing holder (housing, cover) 10 radial and axial labyrinth glands that cooperate 14, thereby further limits the leakage of powder;
Third level hermetically-sealed construction adopts the pressurized seal 15 between cooling jacket 11 and the labyrinth gland 14, thereby forms bigger pressure differential with sieve nest 4, thoroughly stops powder to enter bearing portion, can stop lubricating oil to enter sieve nest again simultaneously;
Fourth stage hermetically-sealed construction adopts the high speed combination sealing 16 between described labyrinth gland 15 and the bearing holder (housing, cover) 10, infiltrates sieve nest to stop lubricating oil to greatest extent.
Wherein, the described first order to third level hermetically-sealed construction along from re-pack 2 to the tapering 20 direction sets gradually, described fourth stage hermetically-sealed construction is arranged on the below of described third level hermetically-sealed construction.
By adopting above-mentioned hermetically-sealed construction, can enter bearing portion by strict control powder, avoid powder to pollute, stop powder curing and cause main shaft stuck, thereby improve bearing service life.
Should be noted that this specification is described preferred embodiment of the present utility model.Other schemes that are equal to specific embodiment described herein that can expect for those skilled in the art, this is equal to scheme and also should comprises in the appended claims.
Claims (10)
1. main axle structure, comprise main shaft, bearing and bearing holder (housing, cover), it is characterized in that, one end of described main shaft is the tapering, the other end is provided with and re-packs, described tapering and re-pack between be provided with auger, described tapering, auger and re-pack and be integrative-structure along the main-shaft axis radial symmetric, described bearing is sleeved on the described tapering in the mode of interference fit.
2. main axle structure according to claim 1 is characterized in that, described re-pack and auger adopt full smooth transition.
3. main axle structure according to claim 1 is characterized in that described bearing holder (housing, cover) is provided with cooling structure.
4. main axle structure according to claim 3 is characterized in that, described cooling structure is the helicla flute that is arranged on the outer peripheral edges of described bearing holder (housing, cover).
5. main axle structure according to claim 4 is characterized in that, described helicla flute is rectangular coil groove or triangle helicla flute.
6. according to each described main axle structure among the claim 1-5, it is characterized in that, be set with cooling jacket on the described bearing holder (housing, cover).
7. main axle structure according to claim 6 is characterized in that, described cooling jacket is provided with cooling medium inlet and cooling medium outlet.
8. according to claim 1 or 3 described main axle structures, it is characterized in that described auger is arranged in the sieve nest, be provided with hermetically-sealed construction between described bearing and the sieve nest.
9. main axle structure according to claim 8, it is characterized in that, described hermetically-sealed construction is the level Four combined sealing structure, described level Four combined sealing structure comprises: first order hermetically-sealed construction is the sealing ring on the described bearing holder (housing, cover) of suit, second level hermetically-sealed construction is the labyrinth gland that cooperates with described cooling jacket and described bearing holder (housing, cover), third level hermetically-sealed construction is the pressurized seal between described cooling jacket and the described labyrinth gland, fourth stage hermetically-sealed construction is the high speed combination sealing between described labyrinth gland and the described bearing holder (housing, cover), wherein, the described first order to third level hermetically-sealed construction sets gradually along the direction from the tapering that re-packs, and described fourth stage hermetically-sealed construction is arranged on the below of described third level hermetically-sealed construction.
10. main axle structure according to claim 9 is characterized in that, described sealing ring is the VS sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820180465XU CN201353562Y (en) | 2008-12-03 | 2008-12-03 | Main shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820180465XU CN201353562Y (en) | 2008-12-03 | 2008-12-03 | Main shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353562Y true CN201353562Y (en) | 2009-12-02 |
Family
ID=41409904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820180465XU Expired - Fee Related CN201353562Y (en) | 2008-12-03 | 2008-12-03 | Main shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353562Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455464A (en) * | 2014-11-20 | 2015-03-25 | 中广核工程有限公司 | Pressure-resistant shell sealing structure of control rod drive mechanism (CRDM) of nuclear power plant reactor |
| CN113524472A (en) * | 2021-07-28 | 2021-10-22 | 无锡阳光精机有限公司 | Bearing protection structure for photovoltaic section |
| CN114669766A (en) * | 2022-04-15 | 2022-06-28 | 纽威数控装备(苏州)股份有限公司 | Telescopic spindle cooling structure |
-
2008
- 2008-12-03 CN CNU200820180465XU patent/CN201353562Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455464A (en) * | 2014-11-20 | 2015-03-25 | 中广核工程有限公司 | Pressure-resistant shell sealing structure of control rod drive mechanism (CRDM) of nuclear power plant reactor |
| CN113524472A (en) * | 2021-07-28 | 2021-10-22 | 无锡阳光精机有限公司 | Bearing protection structure for photovoltaic section |
| CN114669766A (en) * | 2022-04-15 | 2022-06-28 | 纽威数控装备(苏州)股份有限公司 | Telescopic spindle cooling structure |
| CN114669766B (en) * | 2022-04-15 | 2024-05-17 | 纽威数控装备(苏州)股份有限公司 | Telescopic main shaft cooling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20131203 |