CN2303957Y - Collector-regulatable centrifugal fan - Google Patents
Collector-regulatable centrifugal fan Download PDFInfo
- Publication number
- CN2303957Y CN2303957Y CN 97205095 CN97205095U CN2303957Y CN 2303957 Y CN2303957 Y CN 2303957Y CN 97205095 CN97205095 CN 97205095 CN 97205095 U CN97205095 U CN 97205095U CN 2303957 Y CN2303957 Y CN 2303957Y
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- CN
- China
- Prior art keywords
- slip ring
- bolt
- impeller
- utility
- model
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- 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 an adjustable centrifugal fan for a fluid collector, which is composed of an air inlet tank, a connecting component, an adjusting door, the fluid collector, a machine casing, an impeller, etc. The utility model is characterized in that the connecting component has a flexible structure; the fluid collector and the machine casing are fixed by an adjustable mechanism which is composed of an axial disengaging bolt, a radial positioning bolt and an axial protrusion bolt. The utility model has the advantages of convenient maintenance and installation and ensured installation quality.
Description
The novel blower fan technology that relates to of this reality provides a kind of slip ring of easy access can debug centrifugal blower especially.
At present, the early stage boiler of China substantially all adopts non-electrostatic in formula or wet scrubber, it is lower to remove out efficient, induced draught fan is in the flue gas operation that contains dust particle, damage in impeller is very serious, when impeller need overhaul, must earlier the inlet adjusting door be disassembled, again slip ring is pulled down, hung out impeller then.Both at home and abroad now be can not mode-structure for the centrifugal blower slip ring of making, as shown in Figure 1.The interface shape of impeller and slip ring has two kinds, and a kind of is counterpart form (axial clearance), and another kind is running-on form (radial clearance).The difference of gap form directly affects the aeroperformance of blower fan.Because the internal leakage air-flow in the counterpart form structure is vertical with main air flow, destroyed the mobility status of main air flow, reduce the efficient of blower fan, thereby less employing; Parallel at running-on form structure Central Plains internal leakage air-flow with main air flow, do not destroy the mobility status of main air flow.Thereby, make blower fan in manufactory and all adopt this form.But, in actual applications, because ash is given birth to the effect of attrition to impeller, impeller be must unload during maintenance and repair welding or replacing carried out, that uses the running-on form can not mode centrifugal blower slip ring, very difficult when maintenance worker's dismounting and installation impeller, the maintenance worker often cuts off a circle to slip ring, the decline of exerting oneself after the blower fan maintenance.Because internal leakage increases, the rill Shu Fangxiang that flows around main air flow is changed, its degree of regulation and net sectional area are reduced, the turning situation of air-flow in impeller degenerates, import absolute velocity and relative velocity have been increased, cause that impeller inlet drag losses and Ye Dao flow losses increase, cause fan efficiency to descend.When the excesssive gap between impeller inlet and the slip ring, can make fan efficiency descend 10%～20%, influence the motion of economy of blower fan.
The purpose of this utility model is to provide a kind of convenient maintenance and installs, and can guarantee the centrifugal blower of installation quality.
The utility model provides a kind of slip ring adjustable centrifugal blower, is made of parts such as inlet box (1), coupling member (2), adjustment doors (3), slip ring (4), casing (5), impellers (6), it is characterized in that:
Coupling member (2) is 4 flexible structures;
Fix with adjusting mechanism between slip ring (4) and the casing (5), this adjusting mechanism is by axially withdrawing from bolt (41), radial location bolt (42), axially putting in bolt (42) and constitute.
The utility model is owing to adopted adjustable mechanism between slip ring and casing, make centrifugal blower provided by the utility model maintenance or can be separately and be transferred to needed position when changing impeller slip ring and impeller, the effect of flexible connection band is that blower fan and the stress that the cigarette air channel produces are separately separated mutual noninterference, also can isolate the vibration that produces separately, can also abdicate the space for the slip ring axial stretching.The adjustable centrifugal blower of the utility model slip ring promptly can guarantee the repair quality of blower fan, can alleviate working strength of workers again, can also improve the Economy of blower fan.By embodiment in detail the utility model is described in detail below in conjunction with accompanying drawing.
Accompanying drawing 1 can not mode blower fan structure schematic representation for slip ring;
Accompanying drawing 2 is a slip ring adjustable blower fan structural representation;
Accompanying drawing 3 is a slip ring adjusting portion separation structure schematic representation;
Accompanying drawing 4 is an accompanying drawing 3B-B sectional view;
Accompanying drawing 5 is an accompanying drawing 3C-C sectional view;
Accompanying drawing 6 is an accompanying drawing 3D-D sectional view;
Accompanying drawing 7 is an accompanying drawing 1A-A sectional view;
Accompanying drawing 8 is an accompanying drawing 2E-E sectional view.
Embodiment
The adjustable centrifugal blower of slip ring is made of inlet box (1), coupling member (2), adjustment doors (3), slip ring (4), casing (5), impeller (6) part as shown in Figure 2, and coupling member (2) is a flexible structure; Fix with adjusting mechanism between slip ring (4) and the casing (5), as shown in Figure 3, this adjusting mechanism is by axially withdrawing from bolt (41), radial location bolt (42), axially putting in bolt (42) and constitute.When impeller (6) need overhaul, the slip ring (4) and the clamping bolt (42) of casing (5) are pulled down, with axially withdrawing from bolt (41) slip ring (4) and casing (5) are separated, hang out impeller (6) then.During installation, after impeller (6) is in place slip ring (4) is axially inserted in the impeller (6), impeller (6) is adjusted to the appropriate location, then slip ring (4) and casing are tightened with radial location bolt (42).This slip ring is very convenient to maintenance or the work of replacing impeller.
Claims (1)
1. the adjustable centrifugal blower of slip ring is made of parts such as inlet box (1), coupling member (2), adjustment doors (3), slip ring (4), casing (5), impellers (6), it is characterized in that:
Coupling member (2) is a flexible structure;
Fix with adjusting mechanism between slip ring (4) and the casing (5), this adjusting mechanism is by axially withdrawing from bolt (41) radial location bolt (42), axially putting in bolt (42) and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205095 CN2303957Y (en) | 1997-01-17 | 1997-01-17 | Collector-regulatable centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205095 CN2303957Y (en) | 1997-01-17 | 1997-01-17 | Collector-regulatable centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2303957Y true CN2303957Y (en) | 1999-01-13 |
Family
ID=33925393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97205095 Expired - Fee Related CN2303957Y (en) | 1997-01-17 | 1997-01-17 | Collector-regulatable centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2303957Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251985A (en) * | 2011-08-04 | 2011-11-23 | 张家港施亿百机电设备有限公司 | Box-type centrifugal fan |
-
1997
- 1997-01-17 CN CN 97205095 patent/CN2303957Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251985A (en) * | 2011-08-04 | 2011-11-23 | 张家港施亿百机电设备有限公司 | Box-type centrifugal 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 |