CN2599298Y - Ash cleaning device for variable rotating speed fan - Google Patents
Ash cleaning device for variable rotating speed fan Download PDFInfo
- Publication number
- CN2599298Y CN2599298Y CNU022795499U CN02279549U CN2599298Y CN 2599298 Y CN2599298 Y CN 2599298Y CN U022795499 U CNU022795499 U CN U022795499U CN 02279549 U CN02279549 U CN 02279549U CN 2599298 Y CN2599298 Y CN 2599298Y
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- CN
- China
- Prior art keywords
- deashing
- blower fan
- nozzle
- ajutage
- variable speed
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a duct-removing device of the variable-speed blower. The technical proposal of the utility model is that arrange a blast pipe [5] inside a blower shell [1]; an end of the blast pipe [5] is connected with an external-connection air duct [7] and the other end of the blast pipe [5] is connected with a spraying nozzle [3], the outlet of the spraying nozzle [3] is confronted to the dust-accumulation places on the non-working surface of a blade [4] and on the edge of the front-disc inlet of a blade wheel [2], the spraying nozzle [3] is arranged at the inlet of the blower blade wheel [2], a time relay [8] and a four-pass electromagnetic valve [6] are arranged at the junction between the external-connection air duct [7] and the blast pipe [5]. The device of the utility model has favorable dust-removing effect, low operation cost, automatic control of the dust removing and simple structure, which is easy to install and can improve two times of the operation period of the blower.
Description
One, technical field
The utility model relates to a kind of deashing device of variable speed blower fan.Particularly about the deashing device of pneumatic steelmaking gas fan, it belongs to a kind of makes dust separating device with pressurized gas.
Two, background technique
At present, the centrifugal blower that is used for the various dust-containing airflowes of dispatch, in particular for the blower fan that dispatch gas water content is big, dust granules is less and viscosity is bigger, as for the pneumatic steelmaking flue gas purification system, dust-containing airflow is through the purification of a venturi scrubber and No. two venturi scrubbers, when entering induced draught fan, the dust in flue gas particle is less, smoke moisture is 100%, and therefore, dust is easy to adhere on the impeller of blower fan.Use the not long time body high vibration will occur, even damage parts, blower fan can't be worked.Its main cause be on the blade non-working surface, impeller shroud ingress adhering to many dust smalls, after the dust smalls adheres to certain thickness, forms inhomogeneous coming off, and causes the impeller balance to be destroyed.General deashing device is the water spray deashing, but its operating cost height, ash-removal effect are poor, and the fan operation cycle is short.
Three, summary of the invention
Task of the present utility model provides that a kind of ash-removal effect is good, safe and reliable, operating cost is low, deashing is controlled automatically, can improve the deashing device in fan operation cycle.
For realizing above-mentioned task, the technological scheme that the utility model adopted is: be provided with ajutage in fan casing, one end of ajutage is connected with outer air duct, the other end of ajutage is connected with the nozzle that is provided with 1～3 row's balanced ventilation, the outlet of nozzle is facing to the non-working surface of blade, the dust stratification places such as shroud inlet edge of impeller, and the four way solenoid valve and the time relay are equipped with in the joint of air duct and ajutage outside.
Nozzle is installed in the ingress of draught fan impeller, and setting angle is that nozzle becomes 80～90 ° with the impeller tangent direction.The pressurized gas that is used for deashing is air or nitrogen, and pressure is 6～10at.
Deashing control links with the operation control of blower fan, and when rotation speed of fan was reduced to setting value, computer was with control time relay work, and solenoid valve is opened, the beginning deashing; When the deashing time reached setting value, the time relay disconnected, closed electromagnetic valve, and deashing finishes.The setting value of deashing time is 1～5 minute.
Owing to adopt technique scheme, the utlity model has that ash-removal effect is good, safe and reliable, operating cost is low, deashing is controlled automatically, simple in structure, the characteristics of being easy to are installed.The employing of pressurized gas, and blower fan deashing when low cruise have strengthened ash-removal effect, and can make the operation period of blower fan improve about two times.Four, embodiment
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view among Fig. 1.
The utility model such as Fig. 1, shown in Figure 2, in fan casing [1], be provided with ajutage [5], one end of ajutage [5] is connected with outer air duct [7], the other end of ajutage [5] is connected with the nozzle [3] that is provided with 1 row's balanced ventilation, the outlet of nozzle [3] is facing to the non-working surface of blade [4], the dust stratification places such as shroud inlet edge of impeller [2], nozzle [3] is installed in draught fan impeller [2] ingress, setting angle is that nozzle [3] becomes 85 °～90 ° with the impeller tangent direction, on the joint of air duct [7] and ajutage [5] time relay [8] and four way solenoid valve [6] is housed outside.
When blower fan during in the operation of high rotating speed, four way solenoid valve [6] cuts out, and jet deashing is in halted state, and when rotation speed of fan dropped to setting value 600～800rpm, computer was with control time relay [8] work, and four way solenoid valve [6] is opened, and jet deashing begins; After time relay [8] was finished the time of being preset, the time of presetting was 3～5 minutes, and four way solenoid valve [6] cuts out, and deashing is finished.
The pressurized gas that is used for deashing is air or nitrogen, and pressure is 7～8at.
This device ash-removal effect is good, safe and reliable, operating cost is low, deashing is controlled automatically, simple in structure, install easily.The employing of pressurized gas, and blower fan deashing when low cruise have strengthened ash-removal effect, prevent to vibrate and can make the operation period of blower fan improve two times.
Claims (5)
1, a kind of variable speed blower fan deashing device, it is characterized in that in described fan casing [1], being provided with ajutage [5], one end of ajutage [5] is connected with outer air duct [7], the other end of ajutage [5] is connected with the nozzle [3] that is provided with 1～3 row's balanced ventilation, the outlet of nozzle [3] is facing to the non-working surface of blade [4], the dust stratification places such as shroud inlet edge of impeller [2], and air duct [7] is equipped with the time relay [8] and four way solenoid valve [6] with the joint of ajutage [5] outside.
2, variable speed blower fan deashing device according to claim 1 is characterized in that nozzle [3] is installed in the ingress of draught fan impeller [2], and setting angle is that nozzle [3] becomes 80～90 ° with the impeller tangent direction.
3, variable speed blower fan deashing device according to claim 1, the pressurized gas that it is characterized in that being used for deashing is air or nitrogen, pressure is 6～10at.
4, variable speed blower fan deashing device according to claim 1, it is characterized in that the deashing control and the operation control of blower fan link, when rotation speed of fan was reduced to setting value, computer was worked control time relay [8], four way solenoid valve [6] is opened, and deashing begins; When the deashing time reached setting value, the time relay [8] disconnected, and four way solenoid valve [6] cuts out, and deashing finishes.
5, variable speed blower fan deashing device according to claim 4, the setting value that it is characterized in that the deashing time is 1～5 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022795499U CN2599298Y (en) | 2002-10-16 | 2002-10-16 | Ash cleaning device for variable rotating speed fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022795499U CN2599298Y (en) | 2002-10-16 | 2002-10-16 | Ash cleaning device for variable rotating speed fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599298Y true CN2599298Y (en) | 2004-01-14 |
Family
ID=34150561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU022795499U Expired - Fee Related CN2599298Y (en) | 2002-10-16 | 2002-10-16 | Ash cleaning device for variable rotating speed fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599298Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100862A (en) * | 2016-02-23 | 2017-08-29 | 宝钢特钢有限公司 | large centrifugal fan |
| CN111570107A (en) * | 2020-05-09 | 2020-08-25 | 南京玛格耐特智能科技有限公司 | Special gas-saving nozzle structure for ash cleaning device |
| CN111608960A (en) * | 2020-05-11 | 2020-09-01 | 南京玛格耐特智能科技有限公司 | High-efficient type online ash removal device for fan |
-
2002
- 2002-10-16 CN CNU022795499U patent/CN2599298Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100862A (en) * | 2016-02-23 | 2017-08-29 | 宝钢特钢有限公司 | large centrifugal fan |
| CN111570107A (en) * | 2020-05-09 | 2020-08-25 | 南京玛格耐特智能科技有限公司 | Special gas-saving nozzle structure for ash cleaning device |
| CN111608960A (en) * | 2020-05-11 | 2020-09-01 | 南京玛格耐特智能科技有限公司 | High-efficient type online ash removal device for fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |