CN202696332U - Sealed air bag type dust anti-explosion motor sealing device - Google Patents
Sealed air bag type dust anti-explosion motor sealing device Download PDFInfo
- Publication number
- CN202696332U CN202696332U CN 201220351260 CN201220351260U CN202696332U CN 202696332 U CN202696332 U CN 202696332U CN 201220351260 CN201220351260 CN 201220351260 CN 201220351260 U CN201220351260 U CN 201220351260U CN 202696332 U CN202696332 U CN 202696332U
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- sealing device
- pressure bladder
- air bag
- explosion
- air
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- Expired - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to a sealed air bag type dust anti-explosion motor sealing device comprising an anti-explosion shell which is connected with a sealed air bag by an airtight pipeline; an air seal port is arranged on the airtight pipeline and is sealed by a flange assembly; and the sealed air bag is arranged in an air bag shell which is provided with an air inlet and an air outlet. According to the utility model, a seal part leakage detection technology and a waste heat treatment technology are additionally provided while an inert gas diaphragm seal technology is adopted, so that the sealing device is high in technical content, simple in manufacturing technique, convenient to use and adjust, high in working reliability and wide in application scope.
Description
Technical field
The utility model relates to a kind of sealing device, especially relates to a kind of pressure bladder formula dust explosion protection motor sealing device.
Background technology
The dust explosion protection motor is mainly used in existing in the environment of explosive dust, such as Workplaces such as timber, grain depot, feed, plastics, papermaking.In the air in these places, usually filling the air a large amount of inflammable and explosive dust, therefore need to use the motor with good dust explosion protection performance.The sealing device of present employed dust explosion protection motor adopts aluminum alloy casing and Rubber Diaphragm Seal technology more, and seal point is more, and the manufacturing process demand is higher, and without leak detection, functional reliability is not high, and application prospect is uncertain, and the scope of application is less.
Chinese patent 200720111635.4 discloses a kind of sliding bearing air seal structure, comprise the seal cover that is fixed on the bearing pedestal, be located at the sealing ring between seal cover and the rotating shaft, sealing ring is two, form an annular air-pocket between two sealing rings, the top of air bag is provided with a pressurized air stream through hole, and its top is provided with hickey.Introduce pressurized air to annular air-pocket by hickey, enter minute two strands of air-flows behind the annular air-pocket, major part is inhaled into the negative pressuren zone in the bearing outside, and seldom a part enters the interior mist of oil district of bearing, thereby has guaranteed that mist of oil does not leak to motor internal.Although this bearing air seal structure is strengthened to some extent to the bearing sealing gland, but because the existence of the required air-cooled form of bearing, air-flow has the trend that flows into the inboard motor of bearing zone from closed area, the bearing outside, therefore actual the allowing of this sealing gland form still exists sealing gas and escapes into the situation in motor zone, need frequently to replenish fresh sealing gas from the pressurized air stream through hole, the sealing form is also unreliable.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defects that prior art exists, and provides a kind of manufacturing process simple, and functional reliability is high, the pressure bladder formula dust explosion protection motor sealing device of dust explosion protection motor applied widely.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of pressure bladder formula dust explosion protection motor sealing device, comprise explosion-proof casing, explosion-proof casing is connected with pressure bladder by airtight pipeline, have the sealing gland mouth on the airtight pipeline, the sealing gland mouth seals by flange assembly, pressure bladder is located in the airbag housing, and airbag housing has air inlet and gas outlet.
Further, described flange assembly comprises sealing flange, flange end cap and bolt.
Further, in the described pressure bladder inert gas should be housed.
Further, described inert gas can be argon gas.
When the utility model adopts inert gas diaphragm seal technology, seal leakage detection technique and Heat Treatment technology have been increased.Use the utility model, overcome the defective of traditional Rubber Diaphragm Seal, guaranteed the requirement of high leakproofness; The seal leakage detection technique can in time be found leakage problem, proposes solution, avoids causing adverse consequences, causes unnecessary loss; The utility model is by using the Heat Treatment technology, namely utilizes the heat exchange of inert gas and extraneous cooling blast in the annular seal space, and the heat that machine operation is produced is dredged and cooled off; If pressure bladder is without breakage, then the sealing gland of motor is positive confinement, does not have any gas leak phenomenon; If pressure bladder has breakage, then can be judged the seriousness of gas leakage by the sinking degree of pressure bladder, thereby realize the self-checking function of air sac sealing, different by the potential energy that utilizes gas in two cavitys, take air-cooled technology cooling motor waste heat, be conducive to avoid the overheated adverse consequences that causes.
The utility model is simple in structure, compact, and is with high content of technology, and manufacturing process is simple, uses easy to adjustly, and functional reliability is high, and is applied widely.
Description of drawings
Fig. 1 is the utility model one example structure schematic diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to Fig. 1, the present embodiment comprises explosion-proof casing 2, and explosion-proof casing 2 is connected with pressure bladder 9 by airtight pipeline 3, have the sealing gland mouth on the airtight pipeline 3, the sealing gland mouth seals by flange assembly, and pressure bladder 9 is located in the airbag housing 7, and airbag housing 7 has air inlet 8 and gas outlet 9.
Described flange assembly comprises sealing flange 4, flange end cap 5 and bolt 6.
In the described pressure bladder 9 inert gas is housed, described inert gas is argon gas.
Motor 1 places in the explosion-proof casing 2, and pressure bladder 9 interior argon gas are injected by the sealing gland mouth on the airtight pipeline 3, and the air pressure of argon gas can be determined according to actual conditions, can be an atmospheric pressure.The argon gas that sealing gland mouth by airtight pipeline 3 injects is full of pressure bladder 9 and explosion-resistant enclosure 2 inner chambers, and after argon gas injected, the sealing gland mouth was realized sealing by the flange assembly that sealing flange 4, flange end cap 5 and bolt 6 consist of.Under the effect of the argon gas in explosion-resistant enclosure 2 inner chambers, motor 1 is by sealing gland, if motor 1 interior generation spark, argon gas can stop burning, prevents internal explosion, and security performance is high.
Even exist explosive dust to enter explosion-proof casing 2 inner chambers in the external environment, because the existence of argon gas so that explosive dust is suspended among the cavity, can not affect the normal operation of motor 1, be conducive to the electrical fault even the blast that prevent that external environment condition from causing.
During motor 1 normal operation, the environmental radiation heat causes that the temperature of argon gas in explosion-proof casing 2 cavitys rises, because the potential energy of pressure bladder 9 is higher than explosion-proof casing 2 cavity potential energy towards periphery, the high argon gas stream of temperature is to pressure bladder 9, and the low argon gas stream of temperature is to explosion-proof casing 2 cavitys.Cooling-air flows into from air inlet 8, carries out heat exchange with argon gas in the pressure bladder 9, and 10 flows out from the gas outlet, and this process has been finished the processing to the motor waste heat indirectly.
If whole sealing device exists when leaking, the volume of pressure bladder 9 can dwindle, and namely can observe by naked eyes, thereby takes corresponding counter-measure, and this is seal leakage detection technique of the present utility model.
The utility model adopts inert gas diaphragm seal technology, increased simultaneously seal leakage detection technique and Heat Treatment technology and namely utilized the heat exchange of inert gas and extraneous cooling blast in the annular seal space, the heat that machine operation is produced is dredged and is cooled off; If pressure bladder has breakage, then can be judged the seriousness of gas leakage by the sinking degree of pressure bladder, thereby realize the self-checking function of air sac sealing, with high content of technology, applied widely.
Claims (4)
1. pressure bladder formula dust explosion protection motor sealing device, it is characterized in that, comprise explosion-proof casing, explosion-proof casing is connected with pressure bladder by airtight pipeline, have the sealing gland mouth on the airtight pipeline, the sealing gland mouth seals by flange assembly, and pressure bladder is located in the airbag housing, and airbag housing has air inlet and gas outlet.
2. pressure bladder formula dust explosion protection motor sealing device according to claim 1 is characterized in that, described flange assembly comprises sealing flange, flange end cap and bolt.
3. pressure bladder formula dust explosion protection motor sealing device according to claim 1 and 2 is characterized in that, in the described pressure bladder inert gas is housed.
4. pressure bladder formula dust explosion protection motor sealing device according to claim 3 is characterized in that, described inert gas is argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351260 CN202696332U (en) | 2012-07-19 | 2012-07-19 | Sealed air bag type dust anti-explosion motor sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351260 CN202696332U (en) | 2012-07-19 | 2012-07-19 | Sealed air bag type dust anti-explosion motor sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696332U true CN202696332U (en) | 2013-01-23 |
Family
ID=47551889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220351260 Expired - Fee Related CN202696332U (en) | 2012-07-19 | 2012-07-19 | Sealed air bag type dust anti-explosion motor sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761194A (en) * | 2012-07-19 | 2012-10-31 | 刘立文 | Sealing device for dust explosion-proof motor |
-
2012
- 2012-07-19 CN CN 201220351260 patent/CN202696332U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761194A (en) * | 2012-07-19 | 2012-10-31 | 刘立文 | Sealing device for dust explosion-proof motor |
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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: 20130123 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |