CN201313068Y - Double-dustproof sealing structure of jet mill sorting wheel main axle - Google Patents
Double-dustproof sealing structure of jet mill sorting wheel main axle Download PDFInfo
- Publication number
- CN201313068Y CN201313068Y CNU2008202220966U CN200820222096U CN201313068Y CN 201313068 Y CN201313068 Y CN 201313068Y CN U2008202220966 U CNU2008202220966 U CN U2008202220966U CN 200820222096 U CN200820222096 U CN 200820222096U CN 201313068 Y CN201313068 Y CN 201313068Y
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- wheel main
- main shaft
- separation wheel
- dust
- sleeved
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Abstract
The utility model discloses a double-dustproof sealing structure of a jet mill sorting wheel main axle, which comprises an axle seal, a sealing sleeve layer which is soaked with high-temperature vacuum grease and possessed of the adsorption function, and a magnetic fluid sealing structure, wherein, the axle seal, the sealing sleeve layer and the magnetic fluid sealing structure are all sleeved on the sorting wheel main axle from left to right in sequence, both the axle seal and the sealing sleeve layer are positioned between a flange plate sleeved on the outer side of the sorting wheel main axle and the sorting wheel main axle, and the magnetic fluid sealing structure is positioned on the right side outside the flange plate. The utility model has the advantages of reasonable structure and good sealing effect, and can thoroughly solve the dustproof sealing problem of the jet mill sorting wheel main axle.
Description
Technical field
The utility model relates to a kind of dust-proof sealing structure, especially relates to a kind of two dust-proof sealing structures of airflow milling separation wheel main shaft.
Background technology
In the prior art field, the airflow milling classification mainly relies on the separation wheel of rotation at a high speed to bring the centrifugal force of powder and newton's viscous suction of discharging air-flow carries out.Proved already, the separation wheel that rotary speed is fast more, diameter is more little is favourable more to the classification of powder, but, because main shaft one end of high speed separation wheel is operated in the mill chamber of malleation slightly, in a single day so fine high rigidity metal magnetic seals in the bearing of main shaft inside, just can cause separation wheel speed unstability, cause the granularity of magnet powder skewness and reduce magnetic property; Simultaneously, also can cause accelerated wear test, the locking bearing of separation wheel main shaft bearing, thereby the replacing main shaft bearing that must stop production in actual use, operation is wasted time and energy; In addition, might cause that also accidents such as burning out motor takes place.To sum up, the dust-proof sealing structure of airflow milling separation wheel main shaft seems particularly important.
Existing separation wheel main shaft mainly is by the continuous purge of cleaning pressure, prevents to grind indoor magnetic and enters in the main shaft bearing.But, continuous wearing and tearing along with the main shaft seal end, air gap between sealed end and the main shaft can constantly increase, correspondingly cleaning pressure will diminish gradually, the wearing and tearing of sorting main shaft have so just further been aggravated, the vicious circle that goes round and begins again, magnetic will soon enter in the bearing of main shaft, thereby very easily causes accident.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of two dust-proof sealing structures of airflow milling separation wheel main shaft are provided, its rational in infrastructure and good sealing effect can thoroughly solve the dust seal problem of airflow milling separation wheel main shaft.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of two dust-proof sealing structures of airflow milling separation wheel main shaft, it is characterized in that: comprise the axle envelope that is sleeved on successively from left to right on the separation wheel main shaft, soaked the high temperature vacuum grease and have the sealing jacket layer and the magnetic fluid sealing structure of adsorption function, described axle envelope and sealing jacket layer all are positioned at the ring flange inside that is sleeved on the separation wheel main shaft outside, and described magnetic fluid sealing structure is positioned at the outside right side of ring flange.
Described axle envelope inside is filled with high-temperature vacuum fat.
The quantity of described axle envelope is two.
Described two axles envelope all is sleeved on inwardly on the separation wheel main shaft or about the two and is sleeved on relatively on the separation wheel main shaft.
Described sealing jacket layer is wool felt or polytetrafluoroethylene (PTFE).
Described magnetic fluid sealing structure comprises and is sleeved on the separation wheel main shaft and the magnetic conduction annulus of inner band shape cavity cover and be installed in the permanent magnet that the magnetic conduction annulus puts, there is the gap above the described ring cavity and between ring flange and magnetic conduction annulus cover in permanent magnet between described magnetic conduction annulus cover and the separation wheel main shaft.
Wool felt or the polytetrafluoroethylene (PTFE) that soaked the high temperature vacuum grease is equipped with in the inside of described ring cavity.
The utility model compared with prior art has the following advantages, 1, rational in infrastructure, adopt the compound seal mode, in case the wearing and tearing of the gap between hermetically-sealed construction and the separation wheel main shaft become big, the formed magnetic field of magnetic fluid sealing structure just can attract magnetic and accumulate in gap location, thereby turns the gap automatically down to stablize cleaning pressure; Simultaneously, magnetic fluid sealing structure also forms a sect in the magnetic field of above-mentioned gap location, and magnetic is played an effect that intercepts automatically; 2, dust seal is effective, adopt two dust-proof sealing structures, promptly near the wool felt of airflow milling mill chamber side and magnetic fluid sealing structure and away from the axle envelope of mill chamber one side, specifically be to adopt wool felt and permanent-magnetic field carries out preliminary dust seal and utilize the malleation purge to carry out the transition dust seal, simultaneously, utilize axle envelope and high temperature resistant lubricating grease (high-temperature vacuum fat) to carry out final dust seal, thereby, the dust seal problem of airflow milling separation wheel main shaft can thoroughly be solved; 3, owing to the multiple magnetic that prevents of employing enters in the bearing of separation wheel main shaft, thereby prolong the life-span of main shaft bearing greatly, made accident rate also reduce significantly.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model first preferred implementation.
Fig. 2 is the structural representation of the utility model second preferred implementation.
Description of reference numerals:
1-separation wheel main shaft; 2-axle envelope; 3-high-temperature vacuum fat;
4-external shaft sleeve pipe; 5-ring flange; 6-wool felt;
7-magnetic conduction annulus cover; 8-permanent magnet; 9-air flue.
The specific embodiment
As shown in Figure 1, the utility model comprises the axle envelope 2 that is sleeved on successively from left to right on the separation wheel main shaft 1, soaked high temperature vacuum grease 3 and have the sealing jacket layer and the magnetic fluid sealing structure of adsorption function, described axle envelope 2 and sealing jacket layer all are positioned at ring flange 5 inside that are sleeved on separation wheel main shaft 1 outside, described magnetic fluid sealing structure is positioned at the outside right side of ring flange 5, and ring flange 5 is sleeved on external shaft sleeve pipe 4 inside.The air flue of offering in the ring flange 59 is relative with wool felt 6, has a malleation owing to be arranged in the airflow milling mill chamber on described magnetic fluid sealing structure right side, and for equalizing pressure, then can add a normal pressure in the internal cavities of ring flange 5 by air flue 9.In addition, described sealing jacket layer is wool felt 6 or polytetrafluoroethylene (PTFE).
In the present embodiment, the quantity of described axle envelope 2 is that two and two axles envelopes 2 all are sleeved on the separation wheel main shaft 1 inwardly, and the sealing jacket layer of suit is a wool felt 6 on the separation wheel main shaft 1.In addition, described axle seals 2 inside and is filled with high-temperature vacuum fat 3.Described magnetic fluid sealing structure comprises and is sleeved on the separation wheel main shaft 1 and the magnetic conduction annulus of inner band shape cavity cover 7 and be installed in permanent magnet 8 on the magnetic conduction annulus cover 7, permanent magnet 8 is overlapping between 7 above the described ring cavity and at ring flange 5 and magnetic conduction annulus, and has the gap between magnetic conduction annulus cover 7 and the separation wheel main shaft 1.In addition, the wool felt 6 that soaked high temperature vacuum grease 3 is equipped with in the inside of described ring cavity; In the practice, polytetrafluoroethylene (PTFE) also can be adorned in ring cavity inside.Like this, in the actual use, when the gap between magnetic conduction annulus cover 7 and the separation wheel main shaft 1 and ring flange 5 and and separation wheel main shaft 1 between the gap become big gradually because of wearing and tearing, the formed magnetic field of magnetic fluid sealing structure just can attract magnetic and accumulate in gap location, thereby turns the gap automatically down to stablize cleaning pressure; Simultaneously, magnetic fluid sealing structure also forms a sect in the magnetic field of above-mentioned gap location, and magnetic is played an effect that intercepts automatically.
As shown in Figure 2, present embodiment is with the difference part of embodiment 1: the quantity of described axle envelope 2 is two and relative being sleeved on the separation wheel main shaft 1 about the two, and the 26S Proteasome Structure and Function of other parts is all identical with embodiment 1.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (7)
1. two dust-proof sealing structures of an airflow milling separation wheel main shaft, it is characterized in that: comprise the axle envelope (2) that is sleeved on successively from left to right on the separation wheel main shaft (1), soaked high temperature vacuum grease (3) and have the sealing jacket layer and the magnetic fluid sealing structure of adsorption function, described axle envelope (2) and sealing jacket layer all are positioned at ring flange (5) inside that is sleeved on separation wheel main shaft (1) outside, and described magnetic fluid sealing structure is positioned at the outside right side of ring flange (5).
2. according to two dust-proof sealing structures of the described a kind of airflow milling separation wheel main shaft of claim 1, it is characterized in that: described axle envelope (2) inside is filled with high-temperature vacuum fat (3).
3. according to two dust-proof sealing structures of claim 1 or 2 described a kind of airflow milling separation wheel main shafts, it is characterized in that: the quantity of described axle envelope (2) is two.
4. according to two dust-proof sealing structures of the described a kind of airflow milling separation wheel main shaft of claim 3, it is characterized in that: described two axles envelopes (2) all are sleeved on separation wheel main shaft (1) inwardly and upward or about the two are sleeved on relatively on the separation wheel main shaft (1).
5. according to two dust-proof sealing structures of claim 1 or 2 described a kind of airflow milling separation wheel main shafts, it is characterized in that: described sealing jacket layer is wool felt (6) or polytetrafluoroethylene (PTFE).
6. according to two dust-proof sealing structures of claim 1 or 2 described a kind of airflow milling separation wheel main shafts, it is characterized in that: described magnetic fluid sealing structure comprises and is sleeved on that separation wheel main shaft (1) is gone up and the magnetic conduction annulus cover (7) of inner band shape cavity and be installed in permanent magnet (8) on the magnetic conduction annulus cover (7), permanent magnet (8) is positioned at described ring cavity top and is positioned between ring flange (5) and the magnetic conduction annulus cover (7), has the gap between described magnetic conduction annulus cover (7) and the separation wheel main shaft (1).
7. according to two dust-proof sealing structures of the described a kind of airflow milling separation wheel main shaft of claim 6, it is characterized in that: wool felt (6) or the polytetrafluoroethylene (PTFE) that soaked high temperature vacuum grease (3) is equipped with in the inside of described ring cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202220966U CN201313068Y (en) | 2008-10-27 | 2008-10-27 | Double-dustproof sealing structure of jet mill sorting wheel main axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202220966U CN201313068Y (en) | 2008-10-27 | 2008-10-27 | Double-dustproof sealing structure of jet mill sorting wheel main axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201313068Y true CN201313068Y (en) | 2009-09-23 |
Family
ID=41124854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202220966U Expired - Fee Related CN201313068Y (en) | 2008-10-27 | 2008-10-27 | Double-dustproof sealing structure of jet mill sorting wheel main axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201313068Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352098A (en) * | 2015-07-15 | 2017-01-25 | 霓达株式会社 | Industrial sealing component and sealing device |
-
2008
- 2008-10-27 CN CNU2008202220966U patent/CN201313068Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352098A (en) * | 2015-07-15 | 2017-01-25 | 霓达株式会社 | Industrial sealing component and sealing device |
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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: 20090923 Termination date: 20111027 |