CN2136349Y - Dedusting fan - Google Patents
Dedusting fan Download PDFInfo
- Publication number
- CN2136349Y CN2136349Y CN 92230500 CN92230500U CN2136349Y CN 2136349 Y CN2136349 Y CN 2136349Y CN 92230500 CN92230500 CN 92230500 CN 92230500 U CN92230500 U CN 92230500U CN 2136349 Y CN2136349 Y CN 2136349Y
- Authority
- CN
- China
- Prior art keywords
- spiral case
- dust
- volute
- control
- described spiral
- 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 dedusting fan comprising a rotor and a volute. The volute of the fan is composed of front and back two side wall plates and a circular wall plate. A layer of fire-resistant cement inner liner is coated on the inside wall surfaces of the outer brims of the side wall plates near the circular wall plate and the inside wall surface of the circular wall plate, forming a compound wall surface. A plurality of dust cleaning holes are orderly arranged on the compound wall surface. The outside of the volute is covered with a dust collecting machine shell, and an annular cavity is reserved between the volute and the dust collecting machine shell. The lower part of the dust collecting machine shell is designed with a gradually contracted transition section, and is downwardly connected with a dust discharging hole. The central part of the dust collecting machine shell is provided with a return air pipe which is communicated with the outlet of the volute via a horizontal air duct. Compared with the existing fans, the utility model has the advantages of energy-saving and dust removing.
Description
The utility model relates to and a kind ofly collects dedusting, air inducing is the Dedusting fan of one.
The induced draught fan of existing medium small boiler institute adapted is generally centrifugal blower, and this blower fan is made of housing and rotor.Prismatic blade or backward leaning vane are arranged on the rotor, and housing is the spiral case of variable cross section, and this blower fan only has the function of air inducing, and a large amount of dusts that carry in the flue gas then can not be separated and remove.Remove these dusts deduster of then must before induced draught fan, connecting.This just increases the flow losses of flue gas inevitably.
The purpose of this utility model be to provide a kind of can air inducing, but the Dedusting fan of dedusting again.
The purpose of this utility model is to realize like this; Volute of blower is by preceding, latter two side panel and circumference wallboard constitute, on close circumference wallboard place's interior sidewall surface of two side panel outer rims and circumference wallboard interior sidewall surface, lay one deck refractory cement liner, constitute compound wall, and several clean dirt holes that on this wall, distribute in an orderly manner, this clean dirt hole is divided into two sections, in the refractory cement inner liner portion is cone shape hole, be divided into cylindrical hole in described spiral case wall plate, the outside of spiral case is covered with the dust collector shell, leave a toroidal cavity between spiral case and the control of dust casing, the bottom design of control of dust casing has the convergent changeover portion, with the lower link dust-exhausting port, control of dust casing changeover portion middle position is equipped with a backwind tube below the spiral case, and this backwind tube is by a horizontal air channel and spiral case outlet UNICOM.Flue gas in boiler sucks blower fan from fans entrance, enter spiral case after rotor quickens, rotational flow in spiral case is at this moment because runner becomes big gradually, airspeed decreases, but the dust granule that is entrained in the air-flow is used to the power effect still with original speed and direction flight because of it, until arriving the spiral case wall, passes clean dirt hole and enters in the control of dust casing, open with the airflow breakaway in the spiral case, can't sneak into swirling eddy once more, then, then drop to floss hole and discharge blower fan along the control of dust casing.The flue gas that is separated dust then is discharged to chimney by the spiral case outlet.Because control of dust casing and volute of blower be by clean dirt hole UNICOM, thus some air flow still in the control of dust casing, and through backwind tube, horizontal air channel to spiral case outlet discharge, so that keep suitable pressure in the control of dust casing.
The utility model can not cause the pressure loss because of dedusting owing to direct udst separation flue gas in the volute of blower body.Therefore, compare with existing induced draught fan and not only to have the air inducing function, but also have the dedusting effect concurrently, add whirlwind deduster system with existing blower fan and compare, then have energy-conservation and reduce the advantage of equipment investment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1, the utility model structural representation
The A-A sectional view of Fig. 2, Fig. 1
The B of Fig. 3, Fig. 1 is to view
The C-C sectional drawing of Fig. 4, Fig. 3
The D of Fig. 5, Fig. 2 is to view
Referring to shown in the drawings be a Dedusting fan that is used for 0.5 ton of steam boiler, by axle 9, wheel disc 8, formation rotors such as backward leaning vane 14 also are contained on the support 15 through bearing 12, by return panels 3, rear side wall panel 5 and circumference wallboard 6 are welded into spiral case, on close circumference wallboard place's interior sidewall surface of two side panel outer rims and circumference wallboard interior sidewall surface, lay one deck refractory cement liner 16 and constitute compound wall, and several clean dirt holes 17 that on this wall, distribute in an orderly manner, this clean dirt hole is divided into two sections, in the refractory cement inner liner portion is cone shape hole, the spiral case wall plate is divided into cylindrical hole, this bore dia is 7 millimeters, the diameter at butt end of cone shape hole is 15 millimeters, each hole centre distance is 15 millimeters, outside at spiral case also is covered with control of dust casing 7, leave a toroidal cavity 4 between spiral case and the control of dust casing, uniform several piece dunnage 10 between spiral case and the control of dust casing, control of dust casing bottom is designed to convergent changeover portion 19, with lower link dust-exhausting port 11, control of dust casing changeover portion middle position is equipped with a backwind tube 20 below spiral case, this backwind tube exports 13 UNICOMs by a horizontal air channel 21 with spiral case.Discharge blower fan for preventing the dust in the control of dust casing through backwind tube, in backwind tube, be provided with a porous slab 22, which is provided with filter screen 23, the dust-exhausting port of this Dedusting fan connects air locking device, the outlet 13 of spiral case connects chimney, on control of dust casing header board 2 fans entrance 1 is housed, after tested, the dust removal efficiency of this Dedusting fan can reach 85%.
Claims (1)
1, a kind of Dedusting fan, rotor is arranged, spiral case, it is characterized in that, described spiral case is by preceding, latter two side panel and circumference wallboard constitute, on close circumference wallboard place's interior sidewall surface of two side panel outer rims and circumference wallboard interior sidewall surface, lay one deck refractory cement liner, constitute compound wall, and several clean dirt holes that on this wall, distribute in an orderly manner, this clean dirt hole is divided into two sections, in the refractory cement inner liner portion is cone shape hole, be divided into cylindrical hole in described spiral case wall plate, the outside of described spiral case is covered with the dust collector shell, leaves a toroidal cavity between described spiral case and the control of dust casing, the bottom design of control of dust casing has the convergent changeover portion, with the lower link dust-exhausting port, control of dust casing changeover portion middle position is equipped with a backwind tube below described spiral case, and this backwind tube is by a horizontal air channel and spiral case outlet UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230500 CN2136349Y (en) | 1992-08-17 | 1992-08-17 | Dedusting fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230500 CN2136349Y (en) | 1992-08-17 | 1992-08-17 | Dedusting fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2136349Y true CN2136349Y (en) | 1993-06-16 |
Family
ID=33773598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230500 Expired - Fee Related CN2136349Y (en) | 1992-08-17 | 1992-08-17 | Dedusting fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2136349Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734655A (en) * | 2020-07-31 | 2020-10-02 | 宁波丰沃涡轮增压系统有限公司 | Turbofan for breathing machine |
-
1992
- 1992-08-17 CN CN 92230500 patent/CN2136349Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734655A (en) * | 2020-07-31 | 2020-10-02 | 宁波丰沃涡轮增压系统有限公司 | Turbofan for breathing machine |
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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 |