CN207868910U - The bearing blast resistance construction of composite anti-explosion type threephase asynchronous - Google Patents
The bearing blast resistance construction of composite anti-explosion type threephase asynchronous Download PDFInfo
- Publication number
- CN207868910U CN207868910U CN201721777385.8U CN201721777385U CN207868910U CN 207868910 U CN207868910 U CN 207868910U CN 201721777385 U CN201721777385 U CN 201721777385U CN 207868910 U CN207868910 U CN 207868910U
- Authority
- CN
- China
- Prior art keywords
- bearing
- blast resistance
- resistance construction
- cover
- cylinder
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of bearing blast resistance construction of composite anti-explosion type threephase asynchronous, including blast resistance construction on the inside of blast resistance construction on the outside of bearing and bearing, blast resistance construction is located at the outside of bearing on the outside of bearing, blast resistance construction is located at the inside of bearing on the inside of bearing, blast resistance construction includes bearing cover and labyrinth seal set on the outside of bearing, and flameproof joint A is formed at bearing cover and shaft cooperation；Blast resistance construction includes end cap, internal bearing cover, labyrinth seal ring on the inside of bearing, internal bearing cover includes the inner end by the outer end of proximal cover and by proximal cover, the outer diameter of inner end is less than the outer diameter of outer end, flameproof joint B is formed at internal bearing cover outer end and end cap fit inside, and flameproof joint C is formed at the cooperation of internal bearing cover and shaft.The composite bearing blast resistance construction of the utility model can effectively prevent explosive dust, explosive gas enters bearing chamber and motor inside, ensure the safe operation of motor.
Description
Technical field
The utility model is related to high efficiency explosive dust and explosibility gaseous environment motor, more specifically one
The bearing blast resistance construction of kind composite anti-explosion type threephase asynchronous.
Background technology
With the progress of science and technology, there is explosivity in recent years in the emergence of new material, new process, new product
The high place of composite anti-explosion requirement that gas and explosive dust coexist, for can pacify under the high environment of this requirement of explosion proof
The device requirement amount of row for the national games is also more and more, originally single suitable for explosive gas atmosphere or single suitable for explosivity
The fire-proof motor of dust atmosphere cannot require to use in high environment in composite anti-explosion.The position of bearings at motor both ends
（Mainly axis transfixion part）Explosion-proof performance directly determine the explosion-proof performance of motor, therefore under the situation, active demand
The gap design that parts coordinate at original motor bearings at both ends position is improved, it can blast protection to meet composite anti-explosion motor
Gas again can blast protection dust.
Utility model content
The purpose of this utility model is to provide a kind of bearing blast resistance construction of composite anti-explosion type threephase asynchronous, energy
Effectively explosive dust, explosive gas is prevented to enter inside bearing chamber and motor, ensures the safe operation of motor.
To achieve the above object, the utility model adopts the following technical solution：
The bearing blast resistance construction of composite anti-explosion type threephase asynchronous, including blast resistance construction and bearing inside on the outside of bearing
Blast resistance construction, blast resistance construction is located at the outside of bearing on the outside of bearing, and blast resistance construction is located at the inside of bearing on the inside of bearing.Outside bearing
Side blast resistance construction includes bearing cover and labyrinth seal set, forms flameproof joint A at bearing cover and shaft cooperation, flame proof connects
Bearing cover at the A of conjunction face is fitted close with shaft, and the axial length of flameproof joint A is more than or equal to 28mm, flame proof engagement
The radial clearance of face A is less than or equal to 0.3mm；
Labyrinth seal set is fastened on outside bearing cover and is coaxially disposed with shaft, and labyrinth seal set is by radial first
Baffle ring and axial the first cylinder composition, the first baffle ring are located at the first cylinder outer end, the inner ring and rotating shaft sealing of the first baffle ring
It is fixedly connected, the outer ring of the first baffle ring is fixedly connected with the outer end seal of the first cylinder, and the inner end of the first cylinder is in an axial direction
Into bearing cover internal stretch and partial insertion to bearing cover, offered with the corresponding position of the first cylinder on bearing cover
Seal groove, the inner end of the first cylinder be inserted into corresponding seal groove and with its clearance fit.
Blast resistance construction includes end cap, internal bearing cover, labyrinth seal ring on the inside of bearing, and internal bearing cover includes by the outer of proximal cover
End and inner end by proximal cover, the outer diameter of inner end are less than the outer diameter of outer end, internal bearing cover outer end on the inside of end cap
Flameproof joint B is formed at cooperation, the axial length of flameproof joint B is more than or equal to 25mm, the radial clearance of flameproof joint B
Less than or equal to 0.1mm.
Flameproof joint C is formed at the cooperation of internal bearing cover and shaft, the internal bearing cover and shaft at flameproof joint C are tight
Close fit, and the axial length of flameproof joint C is more than or equal to 40mm, the radial clearance of flameproof joint C is less than or equal to
0.2mm。
Labyrinth seal ring set is located on internal bearing cover inner end and is coaxially disposed with shaft, and labyrinth seal set is by radial the
Two baffle rings and axial the second cylinder composition, the second baffle ring are located at the second cylinder inner end, and the inner ring and shaft of the second baffle ring are close
Envelope is fixedly connected, and the outer ring of the second baffle ring is fixedly connected with the inner end seal of the second cylinder, and the outer end of the second cylinder is along axis
To extend outside internal bearing cover and be partly set on internal bearing cover inner end and with its clearance fit.
Gap between the inner peripheral surface of described the first cylinder mating surface corresponding on seal groove is less than or equal to 0.2mm.
Gap on the inner peripheral surface and internal bearing cover inner end of described the second cylinder between matched peripheral surface is less than etc.
In 0.5mm.
Labyrinth seal set is copper labyrinth seal set.
The beneficial effects of the utility model：
1, blast resistance construction bearing cover and labyrinth seal set on the outside of the utility model middle (center) bearing, labyrinth seal set and shaft,
The cooperation of bearing cover, constitutes the first line of defence；Second defence line is formd at bearing cover and shaft cooperation（Flame proof engages
Face A）, the gap by axis transfixion part and length requirement（I.e. by control bearing cover axis hole dimension D 2 dimensional tolerance with
And the dimensional tolerance of spindle outer diameter dimension D 1 and the length L of explosion-proof faying face）Realize the flame proof ability of flameproof joint A；Axis
It stretches end flame proof bearing arrangement and combustible dust can effectively prevent by twice defence line and explosibility gas enters bearing chamber and electricity
Inside machine, realizes to the closed protective of bearing, meet requirement of explosion proof.
2, blast resistance construction includes end cap, internal bearing cover, labyrinth seal ring on the inside of the utility model middle (center) bearing, outside internal bearing cover
End is more than or equal to 25mm with flameproof joint B, the axial length of flameproof joint B is formed at end cap fit inside, and flame proof connects
The radial clearance of conjunction face B is less than or equal to 0.1mm；Flameproof joint C, flameproof joint are formed at the cooperation of internal bearing cover and shaft
Internal bearing cover at C is fitted close with shaft, and the axial length of flameproof joint C is more than or equal to 40mm, flameproof joint C's
Radial clearance is less than or equal to 0.2mm；The outer end of labyrinth seal ring the second cylinder is in an axial direction to extension and portion outside internal bearing cover
Point be set on internal bearing cover inner end and with its clearance fit, the inner peripheral surface of the second cylinder matches on internal bearing cover inner end
Gap between the peripheral surface of conjunction is less than or equal to 0.5mm；By the gap for controlling above-mentioned flameproof joint B and flameproof joint C
And the fit clearance of length, the second cylinder and internal bearing cover, meet the regulation of national explosion-proof criteria GB3836, reaches even if flammable
Property gas motor inside explode, explosions will not be transmitted to the explosion for causing extraneous gas in the external world.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the enlarged drawing at E in Fig. 1；
Fig. 3 is the enlarged drawing at F in Fig. 1；
Fig. 4 is the enlarged drawing at K in Fig. 1.
Specific implementation mode
Illustrate that the embodiment of the utility model, those skilled in the art can be by these by particular specific embodiment below
Content disclosed by specification understands other advantages and effect of the utility model easily.It should be clear that this specification attached drawing is painted
Structure, ratio, size for showing etc., only to coordinate the revealed content of specification, so that those skilled in the art understands
With reading, the enforceable qualifications of the utility model are not limited to, therefore do not have technical essential meaning, any structure
Modification, the change of proportionate relationship or the adjustment of size, do not influencing the effect of the utility model can be generated and can reach
Purpose under, should all still fall in the range of the revealed technology contents of the utility model can be covered.Meanwhile institute in this specification
Such as "upper" of reference, "lower", "left", "right", " centre " and " one " term, be merely convenient to the clear of narration, Er Feiyong
To limit the enforceable range of the utility model, relativeness is altered or modified, in the case where changing technology contents without essence, when
Also it is considered as the enforceable scope of the utility model.
As shown in Figures 1 to 4, anti-on the outside of the bearing blast resistance construction of composite anti-explosion type threephase asynchronous, including bearing
Blast resistance construction on the inside of quick-fried structure and bearing, blast resistance construction is located at the outside of bearing 1 on the outside of bearing, and bearing inside blast resistance construction is located at
The inside of bearing 1.Blast resistance construction includes bearing cover 2 and labyrinth seal set 3 on the outside of bearing, and labyrinth seal set 3 is copper Qu Lu
Sealing shroud.Flameproof joint A is formed at bearing cover 2 and 4 cooperation of shaft, the bearing cover 2 at flameproof joint A and shaft 4
It is fitted close, and the axial length L 1 of flameproof joint A is more than or equal to 28mm, and the radial clearance G1 of flameproof joint A is less than etc.
In 0.3mm（That is bearing cover axis hole dimension D 2 and the difference of spindle outer diameter dimension D 1 is less than or equal to 0.3mm）.
Labyrinth seal set 3 is fastened on 2 outside of bearing cover and is coaxially disposed with shaft 4, and labyrinth seal set 3 is by radial direction
First baffle ring 5 and axial the first cylinder 6 form, and the first baffle ring 5 is located at the first cylinder outer end.First baffle ring 5 it is interior
Circle is sealedly and fixedly connected with shaft 4, and the outer ring of the first baffle ring 5 is fixedly connected with the outer end seal of the first cylinder 6.First circle
The inner end of cylinder 6 is in an axial direction into 2 internal stretch of bearing cover and partial insertion to bearing cover 2, with the on bearing cover 2
The corresponding position of one cylinder 6 offers seal groove, the inner end of the first cylinder 6 be inserted into corresponding seal groove and with its gap
Coordinate, the clearance G 4 between the inner peripheral surface of the first cylinder 6 mating surface corresponding on seal groove is less than or equal to 0.2mm.
Labyrinth seal covers the cooperation of 3 and shaft 4, bearing cover 2 in blast resistance construction on the outside of above-mentioned bearing, constitutes first
Defence line；Second defence line is formd at bearing cover 2 and 3 cooperation of shaft（Flameproof joint A）, by the gap of axis transfixion part
And length requirement（It is i.e. public by the size of the dimensional tolerance and spindle outer diameter dimension D 1 that control bearing cover axis hole dimension D 2
The length L1 of difference and flameproof joint A）Realize the explosion-proof capabilities of flameproof joint A；Blast resistance construction passes through twice on the outside of bearing
Defence line can effectively prevent combustible dust and explosibility gas enters inside bearing chamber and motor, realize that the closing to bearing is protected
Shield, meets requirement of explosion proof.
Blast resistance construction includes end cap 7, internal bearing cover 8, labyrinth seal ring 9 on the inside of bearing, and internal bearing cover 8 includes leaning on proximal cover
7 outer end and inner end by proximal cover 7, the outer diameter of inner end are less than the outer diameter of outer end, 8 outer end of internal bearing cover and end
Flameproof joint B is formed at 7 fit inside of lid, the axial length L 2 of flameproof joint B is more than or equal to 25mm, flameproof joint B
Radial clearance G2 be less than or equal to 0.1mm.
Form flameproof joint C at the cooperation of internal bearing cover 8 and shaft 4, the internal bearing cover 8 flameproof joint C at turn
Axis 4 is fitted close, and the axial length L 3 of flameproof joint C is more than or equal to 40mm, and the radial clearance G3 of flameproof joint C is less than
Equal to 0.2mm.
Labyrinth seal ring 9 is set on 8 inner end of internal bearing cover and is coaxially disposed with shaft 4, and labyrinth seal set 9 is by radial direction
The second baffle ring 10 and axial the second cylinder 11 form, the second baffle ring 10 is located at 11 inner end of the second cylinder, second gear
The inner ring of ring 10 is fixedly connected with rotating shaft sealing, and the outer ring of the second baffle ring 10 and the inner end seal of the second cylinder 11 are fixed
The outer end of connection, the second cylinder 11 is set in extension outside internal bearing cover 8 and partly 8 inner end of internal bearing cover in an axial direction
It is upper and with its clearance fit, on 8 inner end of inner peripheral surface and internal bearing cover of the second cylinder 11 between matched peripheral surface between
Gap G5 is less than or equal to 0.5mm.
Gap and length, the second cylinder of the utility model by the above-mentioned flameproof joint B and flameproof joint C of control
11 with the fit clearance of internal bearing cover 8, meet the regulation of national explosion-proof criteria GB3836, reach and exist even if imflammable gas motor
Inside is exploded, and explosions will not be transmitted to the explosion for causing extraneous gas in the external world.
The utility model is simple in structure, easy to implement, blast resistance construction reliability is high, while meeting dust explosion protection and preventing gas
It is quick-fried, it disclosure satisfy that while in combustible dust and the motor of explosibility gaseous environment.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (4)
1. the bearing blast resistance construction of composite anti-explosion type threephase asynchronous, including prevent on the inside of blast resistance construction and bearing on the outside of bearing
Quick-fried structure, blast resistance construction is located at the outside of bearing on the outside of bearing, and blast resistance construction is located at the inside of bearing on the inside of bearing, and feature exists
In：
Blast resistance construction includes bearing cover and labyrinth seal set on the outside of bearing, and forming flame proof at bearing cover and shaft cooperation engages
Bearing cover at face A, flameproof joint A is fitted close with shaft, and the axial length of flameproof joint A is more than or equal to
The radial clearance of 28mm, flameproof joint A are less than or equal to 0.3mm；
Labyrinth seal set is fastened on outside bearing cover and is coaxially disposed with shaft, and labyrinth seal set is by the first radial baffle ring
It is formed with axial the first cylinder, the first baffle ring is located at the first cylinder outer end, and inner ring and the rotating shaft sealing of the first baffle ring are fixed
Connection, the outer ring of the first baffle ring are fixedly connected with the outer end seal of the first cylinder, and the inner end of the first cylinder is in an axial direction to axis
It holds in outer cover internal stretch and partial insertion to bearing cover, sealing is offered with the corresponding position of the first cylinder on bearing cover
Slot, the inner end of the first cylinder be inserted into corresponding seal groove and with its clearance fit；
Blast resistance construction includes end cap, internal bearing cover, labyrinth seal ring on the inside of bearing, and internal bearing cover includes by the outer end of proximal cover
With the inner end by proximal cover, the outer diameter of inner end is less than the outer diameter of outer end, internal bearing cover outer end and end cap fit inside
Place forms flameproof joint B, and the axial length of flameproof joint B is more than or equal to 25mm, and the radial clearance of flameproof joint B is less than
Equal to 0.1mm；
Flameproof joint C is formed at the cooperation of internal bearing cover and shaft, the internal bearing cover at flameproof joint C is closely matched with shaft
It closes, and the axial length of flameproof joint C is more than or equal to 40mm, the radial clearance of flameproof joint C is less than or equal to 0.2mm；
Labyrinth seal ring set is located on internal bearing cover inner end and is coaxially disposed with shaft, and labyrinth seal set is by radial second gear
Ring and axial the second cylinder composition, the second baffle ring are located at the second cylinder inner end, and the inner ring and rotating shaft sealing of the second baffle ring are solid
Fixed connection, the outer ring of the second baffle ring are fixedly connected with the inner end seal of the second cylinder, the outer end of the second cylinder in an axial direction to
Extend outside internal bearing cover and be partly set on internal bearing cover inner end and with its clearance fit.
2. bearing blast resistance construction according to claim 1, it is characterised in that：The inner peripheral surface and seal groove of described the first cylinder
Gap between upper corresponding mating surface is less than or equal to 0.2mm.
3. bearing blast resistance construction according to claim 1, it is characterised in that：In the inner peripheral surface and bearing of described the second cylinder
Gap on lid inner end between matched peripheral surface is less than or equal to 0.5mm.
4. bearing blast resistance construction according to any one of claim 1 to 3, it is characterised in that：Labyrinth seal set is copper
Labyrinth seal set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777385.8U CN207868910U (en) | 2017-12-19 | 2017-12-19 | The bearing blast resistance construction of composite anti-explosion type threephase asynchronous |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777385.8U CN207868910U (en) | 2017-12-19 | 2017-12-19 | The bearing blast resistance construction of composite anti-explosion type threephase asynchronous |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207868910U true CN207868910U (en) | 2018-09-14 |
Family
ID=63465251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721777385.8U Active CN207868910U (en) | 2017-12-19 | 2017-12-19 | The bearing blast resistance construction of composite anti-explosion type threephase asynchronous |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207868910U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711306A (en) * | 2020-08-24 | 2020-09-25 | 江苏嘉轩智能工业科技股份有限公司 | Explosion-proof structure of drum motor |
| CN111786496A (en) * | 2020-06-15 | 2020-10-16 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
| CN113874155A (en) * | 2019-03-25 | 2021-12-31 | 株式会社尼康 | Machining system |
-
2017
- 2017-12-19 CN CN201721777385.8U patent/CN207868910U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113874155A (en) * | 2019-03-25 | 2021-12-31 | 株式会社尼康 | Machining system |
| CN111786496A (en) * | 2020-06-15 | 2020-10-16 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
| CN111786496B (en) * | 2020-06-15 | 2022-05-06 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
| CN111711306A (en) * | 2020-08-24 | 2020-09-25 | 江苏嘉轩智能工业科技股份有限公司 | Explosion-proof structure of drum motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207868910U (en) | The bearing blast resistance construction of composite anti-explosion type threephase asynchronous | |
| CN201873283U (en) | Shaft end sealing device of spiral conveyer | |
| CN106482506B (en) | Rotary sealing mechanism | |
| CN102079094A (en) | Robot structure | |
| CN107342647A (en) | A kind of composite anti-explosion type threephase asynchronous | |
| CN105465373B (en) | A kind of high performance magnetic liquid sealing structure | |
| CN107317424A (en) | A kind of high pressure composite anti-explosion type threephase asynchronous | |
| CN201854123U (en) | Oil-leakage prevention mechanical seal for bearing of explosion-proof motor | |
| CN105588038B (en) | Runner explosion-proof lamp | |
| CN110542307A (en) | Rotary kiln head and tail negative pressure sealing device | |
| CN207082944U (en) | A kind of composite anti-explosion type threephase asynchronous | |
| CN207082942U (en) | A kind of high pressure composite anti-explosion type threephase asynchronous | |
| CN2871923Y (en) | Anti-explosive and leadkage-proofing Roots blower | |
| CN202817962U (en) | Explosion-proof device of miniature motor | |
| CN207082943U (en) | The dust explosion separation structure of composite anti-explosion type threephase asynchronous | |
| CN209654605U (en) | A kind of power plant cigarette windshield plate shaft-head sealing device | |
| CN203281402U (en) | Classifying wheel bearing protective structure of jet mill | |
| CN205479364U (en) | High performance magnetic fluid seal structure | |
| CN206750812U (en) | A kind of bearing block for feeder | |
| CN209638396U (en) | One kind prevents pernicious gas secondary leakage air seal from protecting box device | |
| CN205212601U (en) | Industrial motor with flame proof seal structure | |
| CN207569913U (en) | Fire observation device | |
| CN207134914U (en) | Small-sized sealing brushless electric machine under a kind of detachable water | |
| CN201313068Y (en) | Double-dustproof sealing structure of jet mill sorting wheel main axle | |
| CN203352989U (en) | Device connecting panel of control box with housing of control box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |