CN106762817A - A kind of improved centrifugal high pressure fan for reducing air quantity leakage - Google Patents
A kind of improved centrifugal high pressure fan for reducing air quantity leakage Download PDFInfo
- Publication number
- CN106762817A CN106762817A CN201611202942.3A CN201611202942A CN106762817A CN 106762817 A CN106762817 A CN 106762817A CN 201611202942 A CN201611202942 A CN 201611202942A CN 106762817 A CN106762817 A CN 106762817A
- Authority
- CN
- China
- Prior art keywords
- impeller
- main
- chassis
- spiral case
- main shaft
- 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.)
- Pending
Links
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of improved centrifugal high pressure fan for reducing air quantity leakage.The present invention includes spiral case, main impeller and the main shaft being connected with main impeller, the accessory impeller for closing on spiral case arrangement is installed on the main shaft axle journal between the main impeller back side and spiral case, accessory impeller includes the impeller chassis rotated with the main shaft and multiple back blades, back blades is located at side of the impeller chassis away from main impeller, and impeller chassis is constituted by being split as two-part half disk assembly.Accessory impeller blower fan main impeller can in operation be dissipated excessive kinetic energy and change into pressure energy again, reduce the pressure difference of fan outlet higher-pressure region and main impeller rear low-pressure area, even if being in the state that builds the pressure in fan outlet, air quantity leakage in spiral case can be also prevented effectively from, improve fan operation efficiency.In addition, impeller chassis is half dish structure for splitting, realize with tearing open with dress, and can also be directly welded above main shaft axle journal, it is not necessary to do any change to volute of blower, it is reliability, practical.
Description
Technical field
The present invention relates to centrifugal high pressure fan field, be specifically related to a kind of improved high pressure for reducing air quantity leakage from
Heart blower fan.
Background technology
Patent CN205243937U discloses a kind of centrifugal high pressure fan, and the centrifugal high pressure fan is by impeller, spiral case, main shaft
Deng part composition, air inlet is provided with the middle of spiral case front end, spiral case side is provided with gas outlet, and main shaft is entered by spiral case rear end center section
Enter and be connected with impeller.The multiple fins of disk increase after the impeller are mentioned in the patent can effectively reduce air quantity leakage, but
It is that air quantity still has the situation of external leakage loss in spiral case when actual impeller works, particularly when fan outlet builds the pressure
When, the clearance leakage between blower fan main shaft and spiral case steams can be very serious, causes site environment to pollute.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of improved centrifugal high pressure wind for reducing air quantity leakage
Machine, the centrifugal high pressure fan causes that air quantity external leakage loss further reduces, even if when fan outlet builds the pressure, can also play very
The good effect for preventing air quantity from leaking, substantially increases the operational efficiency of blower fan.
To achieve the above object, present invention employs following technical scheme：
It is a kind of it is improved reduce air quantity leakage centrifugal high pressure fan, including spiral case, main impeller and with the main lobe
The main shaft of drive connection is taken turns, the accessory lobes for closing on spiral case arrangement are installed on the main shaft axle journal between the main impeller back side and spiral case
Wheel, the accessory impeller includes that the impeller chassis rotated with the main shaft and multiple are fixed on impeller chassis and along impeller
The radially-arranged back blades in chassis, the back blades is located at side of the impeller chassis away from the main impeller, the impeller
Chassis is constituted by being split as two-part half disk assembly.
Further, the impeller chassis is led to by splitting the back blades bonded to each other arranged edge positioned at two and half disks
Cross bolt connection and realize assembly.
Further, the accessory lobes leaf length is the 1/2 of the major axis diameter, and the back blades width is major axis diameter
1/4。
Further, the quantity of the back blades is 6~8.
The beneficial effect of above-mentioned technical proposal is mainly reflected in the following aspects：
(1) present invention sets accessory impeller by main shaft axle journal, blower fan main impeller can in operation be dissipated what is overflow
Kinetic energy changes into pressure energy again, reduces the pressure difference of higher-pressure region at main impeller rear low-pressure area and fan outlet, prevents gas
Into main impeller rear, thus the leakage rate of gas gap location between blower fan main shaft and spiral case further can be effectively reduced,
Even if being in the state for building the pressure in fan outlet, the purpose for being prevented effectively from air quantity leakage in spiral case can be also reached, improve wind
Machine operational efficiency, improved structure of the invention is simple, invest small.In addition, by the impeller chassis design be split half disk knot
Structure, it is convenient to install, realize with tearing open with dress, and can also be directly welded above main shaft axle journal, it is not necessary to which any is done to volute of blower
Change, it is reliability, practical.
(2) accessory impeller when mounted, two and half disks is spliced so that the accessory lobes of edge are split positioned at two and half disks
Piece is bonded to each other, reuses bolt and fastens back blades bonded to each other, that is, constitute the accessory impeller after complete installation.It is described
Accessory impeller simple structure, is easily installed, dismantles.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the right view of accessory impeller in Fig. 1.
Fig. 3 is the left view of accessory impeller in Fig. 2.
The implication of label symbol is as follows in figure：
The disk 12- back blades 13- bolts of 1- accessory impeller 11- impellers chassis 11a- half
14- anchor ear 2- spiral case 21- air inlet 22- air outlet 3- main impeller 4- main shafts
Specific embodiment
In conjunction with brief description of the drawings design feature of the invention：
As shown in Figure 1, 2, 3, the present invention includes spiral case 2, main impeller 3 and the main shaft being connected with the main impeller 3
4, the accessory impeller 1 for closing on the arrangement of spiral case 2, the pair are installed on the axle journal of main shaft 4 between the back side of the main impeller 3 and spiral case 3
Impeller 1 includes that the impeller chassis 11 rotated with the main shaft 4 and multiple are fixed on impeller chassis 11 and along impeller bottom
The radially-arranged back blades 12 of disk, the back blades 12 is located at side of the impeller chassis 11 away from the main impeller 3, described
Impeller chassis 11 is constituted by being split as two-part half disk 11a assembly.
The length of the back blades 12 is the 1/2 of the major axis diameter, and the width of the back blades 12 is the 1/4 of major axis diameter.
The quantity of the back blades 12 is 6~8.
The present invention blower fan main impeller 3 can in operation be dissipated what is overflow by setting accessory impeller 1 on the axle journal of main shaft 4
Kinetic energy changes into pressure energy again, reduces the pressure difference of higher-pressure region at the rear low-pressure area of main impeller 3 and fan outlet 22, prevents gas
Body enters main impeller 3 rear, thus further can effectively reduce gas gap location between blower fan main shaft 4 and spiral case 2 and let out
Leakage quantity, even if being in the state for building the pressure in fan outlet 22, can also reach the purpose for being prevented effectively from air quantity leakage in spiral case 2,
Fan operation efficiency is improve, improved structure of the invention is simple, invest small.In addition, the impeller chassis 11 is designed as tearing open
Point half disk 11a structure, it is convenient to install, realize with tearing open with dress, and can also be directly welded above the axle journal of main shaft 4, it is not necessary to
Do any change to volute of blower 2, it is reliability, practical.
The impeller chassis 11 is passed through by splitting the back blades 12 bonded to each other arranged edge positioned at two and half disk 11a
The connection of bolt 13 is realized assembled.I.e. described accessory impeller 1 when mounted, two and half disk 11a is spliced so that positioned at two and half disks
The back blades 12 that 11a splits edge is bonded to each other, reuses bolt 13 and fastens back blades 12 bonded to each other, that is, constitute
Accessory impeller 1 after complete installation.The simple structure of the accessory impeller 1, is easily installed, dismantles.
Claims (4)
1. it is a kind of it is improved reduce air quantity leakage centrifugal high pressure fan, including spiral case (2), main impeller (3) and with it is described
The main shaft (4) of main impeller (3) drive connection, it is characterised in that：Main shaft (4) between main impeller (3) back side and spiral case (3)
The accessory impeller (1) for closing on spiral case (2) arrangement is installed, the accessory impeller (1) with the main shaft (4) including rotating on axle journal
Impeller chassis (11) and multiple be fixed on impeller chassis (11) and along the radially-arranged back blades in impeller chassis (12), institute
State back blades (12) positioned at the impeller chassis (11) away from the main impeller (3) side, the impeller chassis (11) is by tearing open
It is divided into the assembled composition of two-part half disk (11a).
2. centrifugal high pressure fan as claimed in claim 1, it is characterised in that：The impeller chassis (11) is by positioned at two and half disks
The back blades (12) bonded to each other that (11a) splits edge arrangement connects realization assembly by bolt (13).
3. centrifugal high pressure fan as claimed in claim 1, it is characterised in that：Back blades (12) length is that the main shaft is straight
The 1/2 of footpath, back blades (12) width is the 1/4 of major axis diameter.
4. centrifugal high pressure fan as claimed in claim 1, it is characterised in that：The quantity of the back blades (12) is 6~8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202942.3A CN106762817A (en) | 2016-12-23 | 2016-12-23 | A kind of improved centrifugal high pressure fan for reducing air quantity leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611202942.3A CN106762817A (en) | 2016-12-23 | 2016-12-23 | A kind of improved centrifugal high pressure fan for reducing air quantity leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762817A true CN106762817A (en) | 2017-05-31 |
Family
ID=58899834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611202942.3A Pending CN106762817A (en) | 2016-12-23 | 2016-12-23 | A kind of improved centrifugal high pressure fan for reducing air quantity leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555714A (en) * | 2019-01-23 | 2019-04-02 | 上海诺地乐通用设备制造有限公司 | The variable double air intake centrifugal blowers of one kind, realization method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052068U (en) * | 1989-02-22 | 1990-01-31 | 窦庆福 | Leak-proof corrosion-resisting centrifugal pump |
| CN2418280Y (en) * | 2000-04-13 | 2001-02-07 | 丁震华 | Boosted centrifugal air-blower for transfering coal gas |
| CN201851395U (en) * | 2010-07-08 | 2011-06-01 | 北京蓝爱迪电力技术有限公司 | Shaft blower fan device with burning preventing motor |
| CN204247385U (en) * | 2014-11-05 | 2015-04-08 | 四川安宁铁钛股份有限公司 | Flotation machine stator and flotation device |
| CN204942074U (en) * | 2015-09-16 | 2016-01-06 | 镇江市丹徒区双诚风机厂 | The anti-dust leakage device of centrifugal blower |
| CN205533276U (en) * | 2016-01-22 | 2016-08-31 | 上海凯仕泵业集团有限公司 | There is not sealed pipeline pump |
| CN206338243U (en) * | 2016-12-23 | 2017-07-18 | 安徽六国化工股份有限公司 | A kind of improved centrifugal high pressure fan for reducing air quantity leakage |
-
2016
- 2016-12-23 CN CN201611202942.3A patent/CN106762817A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052068U (en) * | 1989-02-22 | 1990-01-31 | 窦庆福 | Leak-proof corrosion-resisting centrifugal pump |
| CN2418280Y (en) * | 2000-04-13 | 2001-02-07 | 丁震华 | Boosted centrifugal air-blower for transfering coal gas |
| CN201851395U (en) * | 2010-07-08 | 2011-06-01 | 北京蓝爱迪电力技术有限公司 | Shaft blower fan device with burning preventing motor |
| CN204247385U (en) * | 2014-11-05 | 2015-04-08 | 四川安宁铁钛股份有限公司 | Flotation machine stator and flotation device |
| CN204942074U (en) * | 2015-09-16 | 2016-01-06 | 镇江市丹徒区双诚风机厂 | The anti-dust leakage device of centrifugal blower |
| CN205533276U (en) * | 2016-01-22 | 2016-08-31 | 上海凯仕泵业集团有限公司 | There is not sealed pipeline pump |
| CN206338243U (en) * | 2016-12-23 | 2017-07-18 | 安徽六国化工股份有限公司 | A kind of improved centrifugal high pressure fan for reducing air quantity leakage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555714A (en) * | 2019-01-23 | 2019-04-02 | 上海诺地乐通用设备制造有限公司 | The variable double air intake centrifugal blowers of one kind, realization method and system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |