CN201539421U - Extraction structure of centrifugal fan - Google Patents
Extraction structure of centrifugal fan Download PDFInfo
- Publication number
- CN201539421U CN201539421U CN2009202090755U CN200920209075U CN201539421U CN 201539421 U CN201539421 U CN 201539421U CN 2009202090755 U CN2009202090755 U CN 2009202090755U CN 200920209075 U CN200920209075 U CN 200920209075U CN 201539421 U CN201539421 U CN 201539421U
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- CN
- China
- Prior art keywords
- spiral case
- scroll casing
- transmission device
- guide rail
- centrifugal impeller
- 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 - Lifetime
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Abstract
The utility model relates to an extraction structure of a centrifugal fan. The extraction structure of the centrifugal fan comprises a scroll casing, a wind collector, a centrifugal impeller and a transmission device; the wind collector is mounted at the front part of the scroll casing; the centrifugal impeller for driving the transmission device to rotate is arranged in the scroll casing; an opening is formed at the rear part of the scroll casing; a rear cover plate of the scroll casing is arranged at the opening; a rotating shaft of the transmission device penetrates the rear cover plate of the scroll casing and is linked with the centrifugal impeller; the transmission device and a common base with a pulley at the bottom are fixed and form a link mechanism together; the link mechanism is arranged on the guide rail; and the centrifugal impeller is driven by the link mechanism to be extracted from the opening at the rear part of the scroll casing along the guide rail, or to be pushed in the scroll casing from the opening at the rear part of the scroll casing outside. By adopting the extraction structure, the overhaul is convenient and the operation is simple and convenient, fast and flexible without dismounting the wind collector and opening the scroll casing in a hanging manner; the link mechanism is conveniently positioned; and the components have low probability of damage during overhaul, and the mechanical adaptability is high after overhaul, thereby ensuring starting performance and lowering noise, and greatly reducing maintenance cost and expense.
Description
Technical field
The utility model relates to a kind of centrifugal blower draw-out type structure, greatly reduces the repair and maintenance cost and the expense of centrifugal blower, and structural type is simple, easy-to-operat.
Background technique
Centrifugal blower mainly is made up of parts such as the shell of impeller, the scroll casing type of rotation, wind collecting unit, guide plate, motor.
The function of rotary blade is to make air obtain energy; The function of spiral case is to collect air, and the dynamic pressure of air is converted into static pressure effectively.
Centrifugal blower has wide range of applications, and is applicable to the centrifugal blower of various band spiral cases, comprises technology centrifugal blower, kitchen cooking-fume discharging blower fan, blower, induced draught fan etc., is specially adapted to the place of work under bad environment.According to the existing market market, centrifugal blower generally all is to adopt stationary structure, and this class formation is compared with the drawing and pulling type centrifugal blower in actual applications, has deficiency in all many-sides:
1, maintenance the time need be pulled down the intake grill airduct earlier, and it is moved to and blower fan axis not in the interference plane, site space is required big, and operation relative complex influences airduct working life, and the situation of leaking out will be more serious also;
Need dismantle airduct and the soft part that connects of intake grill when 2, overhauling, influence the soft working life that connects.Dismounting impeller or cleaning spiral case frequency are higher, and soft to connect the life-span shorter;
Need dismantle the intake grill wind collecting unit when 3, overhauling, will influence the cooperation progress of impeller and wind collecting unit during assembling, thereby influence the aeroperformance and the noise of blower fan;
Need adopt the lifting mode that spiral case is hung out when 4, overhauling, operation easier is big, has increased recondition expense;
5, the dismounting impeller will produce bigger influence to the dynamic balancing of blower fan, thereby have influence on the performance and the noise of blower fan;
When 6, blower fan wind collecting unit and spiral case were assembled in the maintenance back, it is bigger that wind collecting unit and impeller quality of fit are influenced by manual operation, has influence on aeroperformance and noise in the blower fan work greatly.
Adopt conventional fixed formula structure centrifugal blower, in actual applications, the frequency of maintenance depends on the operating mode that blower fan residing working environment, especially work under bad environment, gas particles are big, the gas dust loading is big, and frequency is higher.The centrifugal blower that adopts conventional construction is in maintenance, maintenance and maintenance process, and serious to the destruction of the performance of blower fan own, the later stage investment cost increases greatly, should be more serious to the loss of standby redundancy.
Summary of the invention
The utility model will reach exhausted purpose, be to provide a kind of novel centrifugal blower draw-out type structure, solve traditional centrifugal blower fixed structure in maintenance, maintenance process, spare parts consumption is fast, operating difficulties, relevant issues such as the parts quality of fit influences aeroperformance and noise during assembling, and the later stage investment is big.
The utility model solves the problems of the technologies described above the technological scheme of being taked: a kind of centrifugal blower draw-out type structure, comprise spiral case, wind collecting unit, centrifugal impeller and transmission device, the anterior wind collecting unit of installing of spiral case, inside is provided with the centrifugal impeller by the transmission device driven rotary, wherein, described spiral case rear portion is provided with perforate, is provided with the spiral case back shroud at tapping; The rotating shaft of described transmission device links with described centrifugal impeller after passing this spiral case back shroud, fixing and the common formation linking mechanism of the common bed of transmission device and bottom band pulley, this linking mechanism is located on the guide rail, centrifugal impeller is driven along guide rail by linking mechanism and extracts out from the perforate at spiral case rear portion, or pushes in the spiral case from the outside from the perforate at spiral case rear portion.
The utility model centrifugal blower draw-out type structure is in blower fan common bed position, removably constitutes the integral body of interlock between common bed, spiral case back shroud, pulley, the centrifugal impeller.Compared with the prior art, overhaul, when safeguarding dismounting simple and efficient, reduce later stage investment greatly, simple in structure.
On the basis of such scheme, described spiral case back shroud and spiral case rear portion are fixed by fastening piece, and cover whole spiral case perforate.
Can adopt the form of sliding or rolling between pulley and the guide rail, its intensity should be enough to support whole common bed with and go up the gross weight of transmission device, spiral case back shroud and the centrifugal impeller installed, the specification of draw-out type structure and size can be with centrifugal blower common bed size variation.
On the basis of such scheme, location for convenience of guide rail and pulley room, be provided with positioning device between described linking mechanism and the guide rail, be the regulating type fastening piece, linking mechanism laterally moves and is positioned on the guide rail by positioning device along guide rail, the slip of sliding device or location all rely on this positioning device to finish, can be with the pulley free adjustment.
The beneficial effects of the utility model are:
Adopt the draw-out type structure, when needs overhauled, linking mechanism laterally slides along guide rail centrifugal impeller is extracted out from the rear portion of spiral case, need not to dismantle wind collecting unit and hangs out spiral case and just can conveniently overhaul, and was easy and simple to handle and flexibly quick;
Positioning device can be located linking mechanism at diverse location as required;
To the degree of protection height of parts, not fragile parts do not have influence to soft the connecing with airduct of flange during maintenance, and maintenance back mechanical engagement degree height guarantees the startability of blower fan and reduces noise.
Description of drawings
Fig. 1 cuts open structural representation for side of the present utility model.
Fig. 2 is the A portion enlarged view of Fig. 1.
Fig. 3 extracts the structural representation of state out for the utility model.
Label declaration in the accompanying drawing
The 1-wind collecting unit
2-spiral case 21-perforate
3-centrifugal impeller 4-spiral case back shroud
5-transmission device 51-rotating shaft
6-common bed 7-pulley
8-positioning device 9-guide rail
Embodiment
See also Fig. 1 and cut open structural representation for side of the present utility model, Fig. 2 is that the A portion enlarged view of Fig. 1 and Fig. 3 extract out for the utility model shown in the structural representation of state, a kind of centrifugal blower draw-out type structure, comprise spiral case 2, wind collecting unit 1, centrifugal impeller 3 and transmission device 5, the spiral case 2 anterior wind collecting units 1 of installing, inside is provided with the centrifugal impeller 3 by transmission device 5 driven rotary, wherein
Described spiral case 2 rear portions are provided with perforate 21, and 21 places are provided with spiral case back shroud 4 in perforate;
The rotating shaft 51 of described transmission device 5 is passed these spiral case back shroud 4 backs and is connected with 3 of described centrifugal impellers, transmission device 5 is fixed and common formation linking mechanisms with the common bed 6 of bottom band pulley 7, this linking mechanism is located on the guide rail 9, centrifugal impeller 3 is driven along guide rail 9 by linking mechanism and extracts out from the perforate 21 at spiral case 2 rear portions, or push in the spiral case 2 from the outside from the perforate 21 at spiral case rear portion, spiral case back shroud 4 is fixed by fastening piece with spiral case 2 rear portions, covers whole spiral case perforate 21.
Be provided with positioning device 8 between described linking mechanism and the guide rail 9, be the regulating type fastening piece, linking mechanism laterally moves and is positioned on the guide rail 9 by this positioning device 8 along guide rail 9.
The utility model is applicable to the centrifugal blower of the various kinds of drive, as the transmission of A formula, the transmission of C formula, the transmission of D formula etc.
When for example adopting C formula transmission type, should earlier belt guard and belt be pulled down, guarantee that transmission device 5 can carry out pull by pulley 7 and guide rail 9, and can not produce interference.
Working principle of the present utility model is:
1, before blower fan is safeguarded, is maintained and overhauls:
When safeguarding, maintaining and overhauling at blower fan, fastening piece between spiral case back shroud and spiral case is turned on, open the positioning device between pulley and guide rail, the linkage structure that centrifugal impeller, spiral case back shroud, transmission device, common bed, pulley are formed laterally is drawn out to the position of easy access from the guide rail, with positioning device locking, impeller and spiral case are overhauled again.
2, blower fan is safeguarded, is maintained and the maintenance back:
After maintenance finishes, open positioning device, by the rolling between pulley and guide rail, the linkage structure that centrifugal impeller, spiral case back shroud, transmission device, common bed, pulley are formed is pushed into the blower fan size positions of dispatching from the factory, guarantee the gap uniformity between centrifugal impeller and the wind collecting unit, with positioning device locking, spiral case back shroud and spiral case close-coupled are got final product by fastening piece.
Claims (3)
1. centrifugal blower draw-out type structure, comprise spiral case, wind collecting unit, centrifugal impeller and transmission device, the anterior wind collecting unit of installing of spiral case, inside is provided with the centrifugal impeller by the transmission device driven rotary, it is characterized in that: described spiral case rear portion is provided with perforate, is provided with the spiral case back shroud at tapping; The rotating shaft of described transmission device links with described centrifugal impeller after passing this spiral case back shroud, fixing and the common formation linking mechanism of the common bed of transmission device and bottom band pulley, this linking mechanism is located on the guide rail, centrifugal impeller is driven along guide rail by linking mechanism and extracts out from the perforate at spiral case rear portion, or pushes in the spiral case from the outside from the perforate at spiral case rear portion.
2. centrifugal blower draw-out type structure according to claim 1 is characterized in that: described spiral case back shroud and spiral case rear portion are fixed by fastening piece, and cover whole spiral case perforate.
3. centrifugal blower draw-out type structure according to claim 1 is characterized in that: be provided with positioning device between described linking mechanism and the guide rail, be the regulating type fastening piece, linking mechanism laterally moves and is positioned on the guide rail by positioning device along guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202090755U CN201539421U (en) | 2009-09-03 | 2009-09-03 | Extraction structure of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202090755U CN201539421U (en) | 2009-09-03 | 2009-09-03 | Extraction structure of centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539421U true CN201539421U (en) | 2010-08-04 |
Family
ID=42590873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202090755U Expired - Lifetime CN201539421U (en) | 2009-09-03 | 2009-09-03 | Extraction structure of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788045A (en) * | 2011-05-17 | 2012-11-21 | 南通辰丰自动化设备制造有限公司 | Dismountable self-insulating blower |
| CN105952667A (en) * | 2016-06-15 | 2016-09-21 | 镇江市中能机械设备有限公司 | High-efficiency fan |
| CN107725435A (en) * | 2017-10-30 | 2018-02-23 | 佛山市南海九洲普惠风机有限公司 | A kind of centrifugal fan structure |
| WO2020124981A1 (en) * | 2018-12-17 | 2020-06-25 | 中车大连机车研究所有限公司 | Integrated centrifugal fan set having high maintainability |
-
2009
- 2009-09-03 CN CN2009202090755U patent/CN201539421U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788045A (en) * | 2011-05-17 | 2012-11-21 | 南通辰丰自动化设备制造有限公司 | Dismountable self-insulating blower |
| CN105952667A (en) * | 2016-06-15 | 2016-09-21 | 镇江市中能机械设备有限公司 | High-efficiency fan |
| CN107725435A (en) * | 2017-10-30 | 2018-02-23 | 佛山市南海九洲普惠风机有限公司 | A kind of centrifugal fan structure |
| CN107725435B (en) * | 2017-10-30 | 2024-03-19 | 佛山市南海九洲普惠风机有限公司 | Centrifugal fan structure |
| WO2020124981A1 (en) * | 2018-12-17 | 2020-06-25 | 中车大连机车研究所有限公司 | Integrated centrifugal fan set having high maintainability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |