CN205937232U - Phosphoric acid tail gas fan impeller - Google Patents
Phosphoric acid tail gas fan impeller Download PDFInfo
- Publication number
- CN205937232U CN205937232U CN201620480860.4U CN201620480860U CN205937232U CN 205937232 U CN205937232 U CN 205937232U CN 201620480860 U CN201620480860 U CN 201620480860U CN 205937232 U CN205937232 U CN 205937232U
- Authority
- CN
- China
- Prior art keywords
- impeller
- phosphoric acid
- tail gas
- acid tail
- blades
- 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
Links
Abstract
The utility model discloses a phosphoric acid tail gas fan impeller, include the impeller shaft and fix at the epaxial impeller dish of impeller, be provided with a plurality of main blade on the excircle of impeller dish, the back of impeller dish is provided with a plurality of back blades, the back blades becomes fan -shaped form evenly distributed on the circumference of the impeller dish wheel hub back, main blade adopts special steel material welding -on on the impeller dish excircle. The utility model discloses utilize the regional special steel that adopts of impeller erodible to replace, promote the characteristics of corrosion stability ability, and at the back blades that wheel hub back welding increases, can produce the suction phenomenon when impeller operation to the bearing seal that makes the impeller back forms the negative pressure, and or else protection support bearing is leaked aggressive fume in here and encroach on. Reach the requirement of using in the adverse circumstances operating mode, lifting means core part operation life.
Description
Technical field
This utility model belongs to industry law phosphoric acid production technical field, is specifically related to a kind of phosphoric acid tail gas draught fan impeller.
Background technology
In industry law phosphoric acid production, in extraction tank sulphuric acid and phosphate ore pulp reaction after produced a large amount of fluoro-gas pass through
Fluorine absorption tube, Tower System are discharged after carrying out water circulation washing.It is big for realizing the key equipment that this system can continuously run
The centrifugal exhaust fan of power, in such operating condition, produced corrosive medium is strong, humidity and temperature is higher, solid content
Greatly, therefore determine that the length in fan operation life-span depends on anti-corrosion, the wear-resisting and heat resistance of blower fan flow passage components.
At present, during the phosphoric acid extraction of domestic phosphorizing treatment produces, for single exhaust fan impeller, such draught fan impeller anti-
Rotten majority is to carry out using common steel lining glass flake material that appearance is anti-corrosion, and operation ratio reaches service life under 93% normal condition
About 4000 hours, afterwards because the blade of impeller extension can be made with centrifugal force by washing away because of the glass flake of its anticorrosive coat
After causing to come off, blade body steel are led to unbalance generation of impeller to vibrate aggravation it is impossible to normally run by corrosion again, therefore,
How to improve the corrosion resistance of draught fan impeller, be current phosphoric acid production technical field problem demanding prompt solution.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of phosphoric acid tail gas draught fan impeller so as in identical work
More than 2 times of service life can effectively be extended, thus lifting effective Homes Using TV of phosphoric acid production and reducing overhaul of the equipments frequency under condition
Secondary.
This utility model is achieved by the following technical programs.
A kind of phosphoric acid tail gas draught fan impeller that this utility model provides, including impeller axle and be fixed on the impeller in impeller axle
Disk；The described impeller disk cylindrical on be provided with some primary blades, the back side of the described impeller disk is provided with some back blades, described pair
Blade becomes fan shape to be evenly distributed in impeller disk wheel hub back side periphery.
Described primary blades adopt special steel material welding-on on the impeller disk is cylindrical.
Described special steel material is 316L or 904L rustless steel.
Described primary blades are welded in impeller plate wheel and prolong the corrosion region easy to wear with blade extension.
The width of described primary blades is 100mm.
The described impeller disk deviates from back blades one side and is additionally provided with boss.
The beneficial effects of the utility model are：
Compared with prior art, this utility model is replaced using special steel using the erodible region of impeller, lifting
The feature of etch resistant properties；And the back blades in the welding increase of the wheel hub back side, swabbing can be produced in impeller operation, thus
The axle envelope of wheel backface is made to form negative pressure, the protection spring bearing corrosive gas that or else leaked herein is encroached on.Reach and disliking
Require used in bad environmental working condition, lifting means core part runs service life.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the right view of Fig. 1.
In figure：The 1- impeller disk, 2- primary blades, 3- back blades, 4- impeller axle, 5- boss.
Specific embodiment
Further describe the technical solution of the utility model below in conjunction with the accompanying drawings, but claimed scope is not limited to
Described.
As shown in Figure 1 and Figure 2, a kind of phosphoric acid tail gas draught fan impeller described in the utility model, including impeller axle 4 and fixation
The impeller disk 1 in impeller axle 4；The described impeller disk 1 cylindrical on be provided with some primary blades 2, the back side of the described impeller disk 1 sets
It is equipped with some back blades 3, described 3 one-tenth fan shapes of back blades are evenly distributed in the impeller disk 1 wheel hub back side periphery.The technical program
There is lifting impeller vulnerable zone anti-corrosion anti-abrasion and damage function, and can make to produce negative pressure at impeller axle envelope, do not leak outside at axle envelope
Corrosive gas causes bearing impaired, and impeller remanufactures low cost, the back blades 3 being increased due to welding, can transport in impeller
Swabbing is produced, so that the axle envelope of wheel backface forms negative pressure, the corrosive gas that do not leak encroaches on spring bearing when turning.
Described primary blades 2 adopt special steel material welding-on on the impeller disk 1 is cylindrical.
Described special steel material is 316L or 904L rustless steel.There is anti-phosphoric acid, the corrosion resistant superior function of Fluohydric acid..
Described primary blades 2 are welded in the impeller disk 1 wheel and prolong the corrosion region easy to wear with blade extension.
The width of described primary blades 2 is 100mm.
The described impeller disk) deviate from back blades 3 one side and be additionally provided with boss 5.
Corrosion area is subject to phosphoric acid production center type exhaust fan impeller it has been observed that blade extension 1/2 by long-term
Divide the centrifugal force due to producing during operating maximum, lead to the glass flake of its anticorrosive coat to come off after being washed away for a long time, make this part
Corroded by phosphoric acid, Fluohydric acid. mist after the common iron of no etch resistant properties is exposed.And draught fan impeller is in the running, impeller hub is carried on the back
Face is zone of positive pressure, is difficult to seal, the fluorine gas emerged at this easily makes spring bearing cause erosion damage, therefore fixes at axle envelope
Service life under this operating mode for such impeller.Therefore adopt technique scheme, substantially increase blower fan in phosphoric acid production
The service life of impeller.
In technique scheme, special steel material welding-on, in impeller blade extension glass flake easy to fall off region, substitutes
The no common iron blade of etch resistant properties and impeller two extension.Described replacement area is blade 2/3 extension area and impeller diameter
Two extension 100mm areas；Described impartial being welded in impeller hub back side periphery of back blades increasing in the welding of the wheel hub back side；Institute
State common material, special materials and back blades partly all carried out with glass flake covering anti-corrosion.The i.e. impeller disk 1, primary blades 2 and pair
All carried out covering anti-corrosion on blade 3 with glass flake.
Claims (6)
1. a kind of phosphoric acid tail gas draught fan impeller, including impeller axle (4) and be fixed on the impeller disk (1) in impeller axle (4), its feature
It is：The described impeller disk (1) cylindrical on be provided with some primary blades (2), the back side of the described impeller disk (1) is provided with some pairs
Blade (3), described back blades (3) becomes fan shape to be evenly distributed in the impeller disk (1) wheel hub back side periphery.
2. phosphoric acid tail gas draught fan impeller as claimed in claim 1 it is characterised in that：Described primary blades (2) adopt special steel material
Matter welding-on is on the impeller disk (1) is cylindrical.
3. phosphoric acid tail gas draught fan impeller as claimed in claim 2 it is characterised in that：Described special steel material is 316L or 904L
Rustless steel.
4. phosphoric acid tail gas draught fan impeller as claimed in claim 1 it is characterised in that：Described primary blades (2) are welded in the impeller disk
(1) wheel prolongs the corrosion region easy to wear with blade extension.
5. phosphoric acid tail gas draught fan impeller as claimed in claim 1 it is characterised in that：The width of described primary blades (2) is
100mm.
6. phosphoric acid tail gas draught fan impeller as claimed in claim 1 it is characterised in that：The described impeller disk (1) deviates from back blades (3)
Simultaneously it is additionally provided with boss (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620480860.4U CN205937232U (en) | 2016-05-25 | 2016-05-25 | Phosphoric acid tail gas fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620480860.4U CN205937232U (en) | 2016-05-25 | 2016-05-25 | Phosphoric acid tail gas fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937232U true CN205937232U (en) | 2017-02-08 |
Family
ID=57934323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620480860.4U Expired - Fee Related CN205937232U (en) | 2016-05-25 | 2016-05-25 | Phosphoric acid tail gas fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205937232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524620A (en) * | 2017-09-25 | 2017-12-29 | 张家港保税区创典炉窑通风设备有限公司 | A kind of centrifugal hot air circulation blower |
-
2016
- 2016-05-25 CN CN201620480860.4U patent/CN205937232U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524620A (en) * | 2017-09-25 | 2017-12-29 | 张家港保税区创典炉窑通风设备有限公司 | A kind of centrifugal hot air circulation blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205937232U (en) | Phosphoric acid tail gas fan impeller | |
| CN104675748B (en) | A kind of low noise with conduit is without spiral case centrifugal fan | |
| CN203702658U (en) | Draught fan | |
| CN203257732U (en) | Impeller for residual heat removal pump | |
| CN104500444A (en) | Bionic erosion-resistant and efficient centrifugal fan blade | |
| WO2023104003A1 (en) | Impeller blade of dry quenching circulating fan and dry quenching circulating fan | |
| CN108867142B (en) | Energy supply system of papermaking production line | |
| CN202090960U (en) | Wet steam waste heat power generation steam turbine | |
| CN212130807U (en) | High-wear-resistance and corrosion-resistance desulphurization pump | |
| CN108759501B (en) | Assembled flue gas condenser | |
| CN210251790U (en) | Graphite modified polypropylene falling film absorber | |
| CN111561475A (en) | Furnace water circulating pump casing | |
| CN201448130U (en) | Flow guide device of air cooling exhausting pipeline | |
| CN101865155A (en) | Heat resistant centrifugal fan | |
| CN205977794U (en) | High anti scuffing, corruption flue gas desulfurization pump | |
| CN105673566A (en) | Novel draught fan | |
| CN209780969U (en) | Novel high, medium and low pressure stator blade for steam turbine unit | |
| CN206668567U (en) | A kind of split type mortar pump | |
| CN209295746U (en) | A kind of inside lining anti-corrosive abrasionproof heat exchanger | |
| CN213981308U (en) | TA9 composite shaft disc fan | |
| CN218991694U (en) | BPRT unit high efficiency low pressure jar last stage blade | |
| CN214998435U (en) | Impeller structure for vortex type hydrogen circulating pump | |
| CN213450510U (en) | Anticorrosive type steam turbine blade | |
| CN214974859U (en) | Improved generation ferronickel electrostatic precipitator casing | |
| CN217999953U (en) | Draught fan wheel hub cover based on high-temperature flue gas conveying |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20200525 |