CN202250942U - Mining explosion-proof blower fan - Google Patents
Mining explosion-proof blower fan Download PDFInfo
- Publication number
- CN202250942U CN202250942U CN2011203012093U CN201120301209U CN202250942U CN 202250942 U CN202250942 U CN 202250942U CN 2011203012093 U CN2011203012093 U CN 2011203012093U CN 201120301209 U CN201120301209 U CN 201120301209U CN 202250942 U CN202250942 U CN 202250942U
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- CN
- China
- Prior art keywords
- explosion
- motor
- blower fan
- proof
- equal
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- 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 - Fee Related
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Abstract
The utility model discloses a mining explosion-proof blower fan, comprising a motor chamber and an air chamber protective cover mutually connected, the internal of the air chamber protective cover is provided with an impeller, the internal of the motor chamber is provided with an explosion-proof motor, and the joint surfaces of the explosion-proof motor and the motor chamber are explosion-proof joint surfaces. The mining explosion-proof blower fan is advantageous in that structure is simple, and via use of the explosion-proof motor, explosive gas mixture explosion under the shaft is prevented, safety hidden trouble is eliminated, and person casualty and economy loss are prevented.
Description
Technical field
The utility model relates to a kind of mine anti-explosion blower fan, relates in particular to a kind of explosion-proof fan that is used for non-getting working face mine rescue capsule under the coal mine.
Background technique
At present; China is advancing the construction of emergency survival facilities such as colliery down-hole survival capsule; Because the colliery subsurface environment is inflammable and explosive environment; May produce spark, electric arc or temperature when using common blower fan work in the mine rescue capsule and be increased to dangerous temperature,, cause great casualties and economic loss when can explosion caused peril such as grade when on every side explosive gas mixture contact.
The model utility content
The purpose of the utility model provides a kind of mine anti-explosion blower fan, the outside explosive gas mixture of blower fan of can when work, avoiding igniting.
The utility model adopts following technical proposals:
A kind of mine anti-explosion blower fan comprises interconnective motor room and air compartment protective housing, is provided with impeller in the air compartment protective housing, and described motor room set inside has explosion-proof motor, and the mating face of explosion-proof motor and motor room is a flameproof joint.
Described motor room housing is divided into loam cake and lower cover; The width value of the flameproof joint between explosion-proof motor and the loam cake surface of contact is more than or equal to 12.5mm and less than 25mm; Gap width between explosion-proof motor and the loam cake surface of contact is smaller or equal to 0.248mm; The width value of the flameproof joint between explosion-proof motor and the lower cover surface of contact is more than or equal to 12.5mm and less than 25mm; Gap width between explosion-proof motor and the lower cover surface of contact is smaller or equal to 0.40mm; The motor shaft of explosion-proof motor and the minimum monolateral gap width that is used for the hole that motor shaft passes through that covers down setting are smaller or equal to 0.075mm, and maximum monolateral gap width is smaller or equal to 0.266mm, and motor room's housing adopts carbon steel material.
Described air compartment protective housing set inside has copper sheet.
Upper end, described motor room is provided with the outlet mouth device that seal ring is housed.
Described air compartment protective housing intake grill is provided with the intake grill protective net.
Described air compartment protective housing lower end is provided with the support lower margin.
Also comprise the alignment circuit that is used to control the explosion-proof motor rotating speed.
The utility model is simple in structure, avoids causing explosive gas mixture blast under the ore deposit through using explosion-proof motor; Position through further qualification flameproof joint; Explosive gas mixture gets into motor internal through gap, housing each several part mating face, motor room under the ore deposit; Contact when blasting with Ignition sources such as spark in motor room's housing, electric arc, dangerous high temperature, can prevent that also the motor room from damaging or distortion, and make most explosive flames or red-hot gas in the motor room inner the elimination; Avoid a large amount of explosive flames or red-hot gas to spread out of through the gap, mating face; Explosive gas mixture around igniting has been eliminated potential safety hazard, has avoided casualties and economic loss.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1; The utility model comprises interconnective motor room and air compartment protective housing 5, is provided with impeller 7 in the air compartment protective housing 5, and motor room's set inside has explosion-proof motor 2; Explosion-proof motor 2 is through motor shaft 10 drives impeller 7; The centrifugal force that produces during impeller 7 high speed rotating make air by certain flow rate, flow to forced flow, make blower fan be no more than safety value simultaneously in the situation lower surface maximum temperature of normal operation, thus the blast of the explosive gas mixture around avoiding causing; Motor room's housing is divided into loam cake 3-1 and lower cover 3-2, and the surface of contact of explosion-proof motor 2 and loam cake 3-1 and the motor shaft of explosion-proof motor 2 10 are flameproof joint 4 with the surface of contact of lower cover 3-2, and motor room's housing adopts carbon steel material to satisfy requirement of explosion proof.The width value of the flameproof joint 4 between explosion-proof motor 2 and the loam cake 3-1 surface of contact is more than or equal to 12.5mm and less than 25mm, and the gap width between explosion-proof motor 2 and the loam cake 3-1 surface of contact is smaller or equal to 0.248mm; The width value of the flameproof joint 4 between explosion-proof motor 2 and the lower cover 3-2 surface of contact is more than or equal to 12.5mm and less than 25mm; Gap width between explosion-proof motor 2 and the lower cover 3-2 surface of contact is smaller or equal to 0.40mm; The motor shaft 10 of explosion-proof motor 2 and lower cover 3-2 go up the minimum monolateral gap width that is used for the hole that motor shaft 10 passes through that is provided with smaller or equal to 0.075mm; Maximum monolateral gap width is smaller or equal to 0.266mm; Because explosive gas mixture can get into motor internal through gap, housing each several part mating face, motor room under the ore deposit; When with motor room's housing in Ignition sources such as spark, electric arc, dangerous high temperature may blast when contacting; Explosion-proof fan motor room housing adopts carbon steel board to be welded, and motor room's housing and flameproof joint 4 can prevent that the motor room from damaging or distortion when blasting, and most explosive flames or red-hot gas are eliminated in inside, motor room; When avoiding a large amount of explosive flames or red-hot gas to spread out of through the gap, mating face, the explosive gas mixture around igniting.When air compartment protective housing 5 is identical with impeller 7 materials, be easy to generate electrical spark in the process that runs up, therefore copper sheet 6 is arranged in air compartment protective housing 5 set inside, produce spark in the time of can avoiding impeller 7 high speed rotating, eliminate safe hidden trouble.Air compartment protective housing 5 intake grills are provided with intake grill protective net 8, can prevent that foreign matter from getting into intake grill; Air compartment protective housing 5 lower ends are provided with support lower margin 9, are used for cooperating with the aircondition installation; The upper end, motor room also is provided with the outlet mouth 1 that is used for the blower fan outlet; Outlet mouth 1 place is equipped with seal ring, with hold down gag seal ring is compressed, and has promptly satisfied the security level of anti-explosion motor complete machine; Improved the explosion-proof performance of blower fan, also guaranteed simultaneously and can the twisting of cable be delivered to link; The utility model also comprises the alignment circuit that is used to control explosion-proof motor 2 rotating speeds, and explosion-proof motor 2 is turned round according to high speed, middling speed and low speed, and alignment circuit is an existing technology, repeats no more at this.
Claims (7)
1. mine anti-explosion blower fan; Comprise interconnective motor room and air compartment protective housing; Be provided with impeller in the air compartment protective housing, it is characterized in that: described motor room set inside has explosion-proof motor, and the mating face of explosion-proof motor and motor room is a flameproof joint.
2. mine anti-explosion blower fan according to claim 1; It is characterized in that: described motor room housing is divided into loam cake and lower cover; The width value of the flameproof joint between explosion-proof motor and the loam cake surface of contact is more than or equal to 12.5mm and less than 25mm; Gap width between explosion-proof motor and the loam cake surface of contact is smaller or equal to 0.248mm; The width value of the flameproof joint between explosion-proof motor and the lower cover surface of contact is more than or equal to 12.5mm and less than 25mm, and the gap width between explosion-proof motor and the lower cover surface of contact is smaller or equal to 0.40mm, and the motor shaft of explosion-proof motor and the minimum monolateral gap width that is used for the hole that motor shaft passes through that covers setting down are smaller or equal to 0.075mm; Maximum monolateral gap width is smaller or equal to 0.266mm, and motor room's housing adopts carbon steel material.
3. mine anti-explosion blower fan according to claim 1 and 2 is characterized in that: described air compartment protective housing set inside has copper sheet.
4. mine anti-explosion blower fan according to claim 3 is characterized in that: upper end, described motor room is provided with the outlet mouth device that seal ring is housed.
5. mine anti-explosion blower fan according to claim 4 is characterized in that: described air compartment protective housing intake grill is provided with the intake grill protective net.
6. mine anti-explosion blower fan according to claim 5 is characterized in that: described air compartment protective housing lower end is provided with the support lower margin.
7. mine anti-explosion blower fan according to claim 6 is characterized in that: also comprise the alignment circuit that is used to control the explosion-proof motor rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203012093U CN202250942U (en) | 2011-08-18 | 2011-08-18 | Mining explosion-proof blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203012093U CN202250942U (en) | 2011-08-18 | 2011-08-18 | Mining explosion-proof blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250942U true CN202250942U (en) | 2012-05-30 |
Family
ID=46112194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203012093U Expired - Fee Related CN202250942U (en) | 2011-08-18 | 2011-08-18 | Mining explosion-proof blower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115738123A (en) * | 2022-10-26 | 2023-03-07 | 武汉船用机械有限责任公司 | Explosion-proof box |
-
2011
- 2011-08-18 CN CN2011203012093U patent/CN202250942U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115738123A (en) * | 2022-10-26 | 2023-03-07 | 武汉船用机械有限责任公司 | Explosion-proof box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20170818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |