CN202756257U - Multistage high-pressure centrifugal fan - Google Patents
Multistage high-pressure centrifugal fan Download PDFInfo
- Publication number
- CN202756257U CN202756257U CN 201220459508 CN201220459508U CN202756257U CN 202756257 U CN202756257 U CN 202756257U CN 201220459508 CN201220459508 CN 201220459508 CN 201220459508 U CN201220459508 U CN 201220459508U CN 202756257 U CN202756257 U CN 202756257U
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- intermediate casing
- guide disc
- high pressure
- spiral case
- pressure fan
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Abstract
A multistage high-pressure centrifugal fan comprises at least two stages of pressurizing impellers, an air guide disk is arranged on the back portion of each stage of pressurizing impeller, air guide disks are arranged in middle casings, a front cover at the front end of a first stage middle casing is fixed and attached on the first middle casing through a front bearing seat, and a volute shell is connected with the tail portion of a last stage middle casing, meanwhile a back bearing seat is arranged on the back portion of the volute shell, and the front bearing seat is matched with the back bearing seat to insert and fix a fixing main shaft. The middle casings are made of mold in a one-step molding mode, and the air guide disks and the volute shell are formed in a welding mode or through casts. The multistage high-pressure centrifugal fan is simple in technology, convenient to process, easy to assemble, meanwhile, good in centrifugal effects, and steady in fan speed.
Description
Technical field
The utility model relates to centrifugal blower, is specially a kind of multistage centrifugal high pressure fan.
Background technique
In modern industry, particularly in industrial production, often need to some in pelletized form or pulverous material (comprising grain, breeze, ore particle, cement and some other industrial material) carry, character reason owing to these materials itself, it carries the three kinds of modes that adopt more: machinery is carried, pipeline is carried and container transport, in these three kinds of mode of movements, pipeline is carried pollutes the main flow that the characteristics such as little have become existing mass transport mode simultaneously because its efficient is high, floor space is few, cost is low.
Pipeline transportation art at material, Pneumatic conveyer and technology are exactly core wherein, and because the continuous production process requirement that pipeline is carried, adopt common blower fan to drive core component as the source of the gas of Pneumatic conveyer and exist the still problem that lays particular stress on of undesirable, fuselage of pressure efficiency.Also have and adopt Multi-stage centrifugal fan as pneumatic transport equipment, but a lot of because the design reasons of Multi-stage centrifugal fan itself, many complex structures, be difficult to safeguard, and easily cause in the gas flow channel airspeed inhomogeneous, windage loss is large, is not suitable for the high pressure operating mode and has influence on the working efficiency of blower fan.
The model utility content
The technical problem that the utility model solves is to provide a kind of multistage centrifugal high pressure fan, and this blower fan structure is compact, reasonable in design, and supercharging to guarantee the blower fan working efficiency, solves the shortcoming in the above-mentioned background technology to improve blast and wind speed step by step.
The technical problem that the utility model solves realizes by the following technical solutions:
Multistage centrifugal high pressure fan, comprise at least two-step supercharging impeller, and the rear portion of every one-level supercharging impeller is provided with guide disc, guide disc is installed in the intermediate casing, and protecgulum is fixed and is fitted in by front-end bearing pedestal at the intermediate casing front end of previous stage on the intermediate casing of previous stage, and the intermediate casing afterbody of afterbody is connected with spiral case, simultaneously, rear portion at spiral case also is provided with rear bearing block, and front-end bearing pedestal cooperates with rear bearing block and is used for plug-in mounting and fixed main shaft; Described intermediate casing is that the mould once-through is made, and guide disc and spiral case are then by welding fabrication or utilize the cast casting moulding.
In the utility model, the Placement between intermediate casing, guide disc, protecgulum and the spiral case adopts bolt screw rod Placement to realize.
In the utility model, between described protecgulum and the front-end bearing pedestal and between the adjacent impeller interstage seal assembly is installed.
In the utility model, between the guide disc in intermediate casing and guide disc and main shaft link position place is provided with the guide disc sealing.
In the utility model, described interstage seal assembly and guide disc are sealed and matched, can be in order to guarantee the overall sealing performance of centrifugal blower.
Beneficial effect: the utility model is simple in structure, compact to design, can in body, effectively improve the flow condition of gas in runner, reduced the loss of gas in the pressurized flow process, air-flow changes near the principle value from the gas flow rate of previous stage when one-level flows backward, Effective Raise the working efficiency of multistage centrifugal high pressure fan body.
Description of drawings
Fig. 1 is the schematic diagram of the utility model preferred embodiment.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Preferred embodiment referring to the multistage centrifugal high pressure fan of Fig. 1, in the present embodiment, comprise front-end bearing pedestal 1, interstage seal assembly 2, protecgulum 3, impeller 4, guide disc 5, guide disc sealing 6, rear bearing block 7, spiral case 8, intermediate casing 9, wherein, supercharging impeller 4 comprises level Four, and the rear portion of every one-level supercharging impeller is provided with guide disc 5, guide disc 5 is installed in the intermediate casing 9, spiral case 8 is positioned at the right-hand member of intermediate casing 9, so that intermediate casing 9 can be wrapped in inside with impeller 4, guide disc 5, guide disc sealing 6.
In addition, in the present embodiment, front-end bearing pedestal 1 is fixed on protecgulum 3 on the bearing, and rear bearing block 7 is fixed on the rear end of bearing.Protecgulum 3 rear sides are impeller 4, simultaneously, between adjacent two impellers 4 interstage seal assembly 2 are installed, and guide disc sealing 6 is installed between the guide disc 5
During operation, power system drive bearing rotates, thereby impeller 4 rotations because inter-stage sealing 2 and guide disc seal 6 sealing, thereby have guaranteed the performance of centrifugal blower.
Above demonstration and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. multistage centrifugal high pressure fan, comprise at least two-step supercharging impeller, it is characterized in that, the rear portion of every one-level supercharging impeller is provided with guide disc, and guide disc is installed in the intermediate casing, and protecgulum is fixed and is fitted in by front-end bearing pedestal at the intermediate casing front end of previous stage on the intermediate casing of previous stage, and the intermediate casing afterbody of afterbody is connected with spiral case, simultaneously, also be provided with rear bearing block at the rear portion of spiral case, front-end bearing pedestal cooperates with rear bearing block and is used for plug-in mounting and fixed main shaft; Described intermediate casing is that the mould once-through is made, and guide disc and spiral case are then by welding fabrication or utilize the cast casting moulding.
2. multistage centrifugal high pressure fan according to claim 1 is characterized in that, adopts the bolt screw rod to connect between intermediate casing, guide disc, protecgulum and the spiral case.
3. multistage centrifugal high pressure fan according to claim 1 is characterized in that, between described protecgulum and the front-end bearing pedestal and between the adjacent impeller interstage seal assembly is installed.
4. multistage centrifugal high pressure fan according to claim 1 is characterized in that, between described protecgulum and the front-end bearing pedestal and between the adjacent impeller interstage seal assembly is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459508 CN202756257U (en) | 2012-09-11 | 2012-09-11 | Multistage high-pressure centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459508 CN202756257U (en) | 2012-09-11 | 2012-09-11 | Multistage high-pressure centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756257U true CN202756257U (en) | 2013-02-27 |
Family
ID=47735442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220459508 Expired - Fee Related CN202756257U (en) | 2012-09-11 | 2012-09-11 | Multistage high-pressure centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756257U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471150A (en) * | 2013-08-19 | 2013-12-25 | 杭州老板电器股份有限公司 | Axially spiral exhaust type range hood applying cold accelerant decomposition technique |
| CN107781176A (en) * | 2017-11-30 | 2018-03-09 | 浙江颐顿机电有限公司 | A kind of stacked Multi-layer centrifugal formula blower fan |
| CN110529402A (en) * | 2019-08-14 | 2019-12-03 | 湖南伟玛集团有限公司 | A kind of middling speed Multi-stage centrifugal fan |
-
2012
- 2012-09-11 CN CN 201220459508 patent/CN202756257U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471150A (en) * | 2013-08-19 | 2013-12-25 | 杭州老板电器股份有限公司 | Axially spiral exhaust type range hood applying cold accelerant decomposition technique |
| CN103471150B (en) * | 2013-08-19 | 2015-11-18 | 杭州老板电器股份有限公司 | A kind of axial screw air draft type range hood using cold catalyst decomposition technique |
| CN107781176A (en) * | 2017-11-30 | 2018-03-09 | 浙江颐顿机电有限公司 | A kind of stacked Multi-layer centrifugal formula blower fan |
| CN110529402A (en) * | 2019-08-14 | 2019-12-03 | 湖南伟玛集团有限公司 | A kind of middling speed Multi-stage centrifugal fan |
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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 |
Granted publication date: 20130227 Termination date: 20150911 |
|
| EXPY | Termination of patent right or utility model |