CN210531190U - Fully-sealed explosion-proof pressure-discharge fan - Google Patents
Fully-sealed explosion-proof pressure-discharge fan Download PDFInfo
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- CN210531190U CN210531190U CN201920833484.6U CN201920833484U CN210531190U CN 210531190 U CN210531190 U CN 210531190U CN 201920833484 U CN201920833484 U CN 201920833484U CN 210531190 U CN210531190 U CN 210531190U
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Abstract
The utility model belongs to the field of fans, and provides a fully-sealed explosion-proof pressure-relief fan, which comprises a fan shell, an air inlet, a sealing tank, an explosion-proof opening, an impeller component, a fan shaft, a shaft end gland, a threaded cylindrical pin, a gasket, a motor base connecting piece, an air seal base, a flat key, a bolt, an air seal bushing and an air seal pressing plate, wherein the air inlet is communicated with the air in the sealing tank, so that the air entering the fan due to untight sealing is changed from the leakage outside the system into the leakage inside the system; the explosion-proof port is arranged on the sealed tank, and when the pressure in the tank is overlarge and exceeds the rated pressure, the explosion-proof sheet can be exploded, so that the pressure discharge effect is achieved; thereby make whole protection system inner stability operation for a long time, sealed effect is better, safer, and the life of fan also can increase.
Description
Technical Field
The utility model belongs to the field of fans, in particular to a fully-sealed explosion-proof pressure-discharge fan, through arranging an explosion-proof port on a sealed tank, when the pressure in the tank is overlarge, the rated pressure is exceeded, and an explosion-proof sheet can be exploded, thereby achieving the pressure-discharge effect; thereby make whole protection system inner stability operation for a long time, sealed effect is better, safer, and the life of fan also can increase.
Background
The existing fully-sealed fans, such as the appearance diagram of a high-pressure fully-sealed fan in the industry and a direct-connected mechanical sealing device, have the existing problems that the sealing effect between a shell at the movable sealing connection position of a leakage-prone position and a fan main shaft is unstable, the friction oil seal between the shell and the fan main shaft is easy to wear after long-distance transportation or long-time high-speed operation, a gap is generated to cause untight sealing, explosion can be caused in a flammable and explosive inert gas protection system, and the social requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at overcome current fan and seal not tight, lead to casing and fan main shaft friction oil blanket wearing and tearing easily, and then probably cause shortcomings such as explosion in leading to inflammable and explosive inert gas protection system, a totally enclosed explosion-proof pressure fan of arranging is provided, through the innovation improvement to the totally closed system of protection system, it is higher to provide a factor of safety, the longer fan sealing scheme of life, theoretically this sealed mode can reach zero leakage, and there is unlimited life, thereby inert gas's loss has been reduced, and the change of vulnerable part, the cost of use has been reduced.
The purpose of the utility model is realized through the following technical scheme:
a fully-sealed explosion-proof pressure-discharging fan comprises a fan shell, an air inlet, a sealing tank, an explosion-proof opening, an impeller assembly, a fan shaft, a shaft end gland, a threaded cylindrical pin, a gasket, a motor base connecting piece, an air seal base, a flat key, a bolt, an air seal bushing and an air seal pressing plate, wherein the shaft end gland is connected with the fan shaft through the threaded cylindrical pin; the sealed tank is provided with an explosion-proof opening, and when the pressure in the tank is overlarge and exceeds the rated pressure, the explosion-proof sheet can be exploded, so that the pressure discharge effect is achieved.
The utility model has the advantages that:
compared with the existing fan, the utility model has simple structure, and changes the air entering the fan without tight sealing from the outside leakage into the inside leakage through the air communication between the air inlet and the air in the sealing tank; the explosion-proof port is arranged on the sealed tank, and when the pressure in the tank is overlarge and exceeds the rated pressure, the explosion-proof sheet can be exploded, so that the pressure discharge effect is achieved; thereby make whole protection system inner stability operation for a long time, sealed effect is better, safer, and the life of fan also can increase.
Drawings
Fig. 1 is a schematic view of a fully-sealed explosion-proof pressure-discharge fan.
Fig. 2 is a side view.
In the figure: the air-tight structure comprises a fan shell 1, an air inlet 2, a sealing tank 3, an explosion-proof opening 4, an impeller assembly 5, a fan shaft 6, a shaft end gland 7, a threaded cylindrical pin 8, a gasket 9, a motor 10, a motor base connecting piece 11, a gas seal base 12, a flat key 13, a bolt 14, a gas seal bushing 15 and a gas seal pressing plate 16.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
The working process of the fully-sealed explosion-proof pressure-discharge fan comprises the following steps:
(1) when the fully-sealed explosion-proof pressure-discharging fan works, the air seal bushing and the air seal pressing plate are tightly connected, the sealing performance of the connection between the motor and the fan shell is guaranteed, the air inlet is communicated with air in the sealing tank, air entering the fan due to poor sealing is changed from system leakage into system leakage, system air leakage is avoided, and inert gas consumption is reduced.
(2) When the fully-sealed explosion-proof pressure-discharge fan works, the explosion-proof opening is formed in the sealing tank, and when the pressure in the tank is too high and exceeds the rated pressure, the explosion-proof piece can explode, so that the pressure-discharge effect is achieved.
As shown in figure 1, a fully-sealed explosion-proof pressure-discharging fan comprises a fan shell 1, an air inlet 2, a sealing tank 3, an explosion-proof opening 4, an impeller assembly 5, a fan shaft 6, a shaft end gland 7, a threaded cylindrical pin 8, a gasket 9, a motor 10, a motor base connecting piece 11, an air sealing base 12, a flat key 13, a bolt 14, an air sealing bush 15 and an air sealing pressing plate 16, wherein the shaft end gland 7 is connected with the fan shaft 6 through the threaded cylindrical pin 8, the motor base connecting piece 11 is fixed on the fan shell 1 through the bolt 14, the impeller assembly 5 is fixedly connected with the fan shaft 6 through the flat key 13, the motor base connecting piece 11, the air sealing base 12, the air sealing bush 15 and the air sealing pressing plate 16 are tightly connected to ensure the sealing performance of the motor 10 connected with the fan shell 1, the air inlet 2 is communicated with the air in the sealing tank 3, the air which does not enter the fan in a tight sealing mode is changed from the external, the consumption of inert gas is reduced; the sealed tank 3 is provided with an explosion-proof opening 4, and when the pressure in the tank is overlarge and exceeds the rated pressure, the explosion-proof sheet can be exploded, so that the pressure discharge effect is achieved.
Claims (1)
1. A full-sealed explosion-proof pressure-discharging fan is characterized by comprising a fan shell, an air inlet, a sealing tank, an explosion-proof opening, an impeller assembly, a fan shaft, a shaft end gland, a threaded cylindrical pin, a gasket, a motor base connecting piece, an air seal seat, a flat key, a bolt, an air seal bushing and an air seal pressing plate, wherein the shaft end gland is connected with the fan shaft through the threaded cylindrical pin; the sealed tank is provided with an explosion-proof opening, and when the pressure in the tank is overlarge and exceeds the rated pressure, the explosion-proof sheet can be exploded, so that the pressure discharge effect is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833484.6U CN210531190U (en) | 2019-06-04 | 2019-06-04 | Fully-sealed explosion-proof pressure-discharge fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920833484.6U CN210531190U (en) | 2019-06-04 | 2019-06-04 | Fully-sealed explosion-proof pressure-discharge fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531190U true CN210531190U (en) | 2020-05-15 |
Family
ID=70594479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920833484.6U Active CN210531190U (en) | 2019-06-04 | 2019-06-04 | Fully-sealed explosion-proof pressure-discharge fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531190U (en) |
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2019
- 2019-06-04 CN CN201920833484.6U patent/CN210531190U/en active Active
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