CN209145967U - A kind of centrifugal blower multi-stage impeller mounting structure - Google Patents
A kind of centrifugal blower multi-stage impeller mounting structure Download PDFInfo
- Publication number
- CN209145967U CN209145967U CN201920530752.7U CN201920530752U CN209145967U CN 209145967 U CN209145967 U CN 209145967U CN 201920530752 U CN201920530752 U CN 201920530752U CN 209145967 U CN209145967 U CN 209145967U
- Authority
- CN
- China
- Prior art keywords
- stage impeller
- impeller
- main shaft
- mounting structure
- centrifugal blower
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of centrifugal blower multi-stage impeller mounting structure, the rotor structure arranged suitable for impeller in-line arrangement formula and arranged back-to-back.The structure carries out axially position using the shaft shoulder on main shaft, the delthyrium of impeller and the special-shaped shaft part clearance fit or transition fit of main shaft, axial be locked is carried out with locking nut again, the function that impeller is locked and torque transmits is realized simple and effectively, and the lossless dismounting of main shaft and multi-stage impeller is realized, impeller internal stress can be effectively reduced.
Description
Technical field
The utility model relates to a kind of centrifugal blower multi-stage impeller mounting structures.
Background technique
In centrifugal blower, main shaft is used to support impeller, axle sleeve, sealing, balancing frame rotary member, while transmitting torque,
Carry very important effect.The joint face of most of centrifugal blower fan blade wheel and main shaft is circular cross-section at present, and impeller is adopted
It is fixed on main shaft with the method for hot charging, torque and axial force is transmitted by frictional force.When rotor rotates, wheel disc and axis
Diameter diameter can all increase, and wheel disc reduces the pressing force of axis, when revolving speed rises to Speed of Rotation Loosening, make between wheel disc and axis there is no
Pressing force, wheel disc will loosen, and blower will generate vibration to work.
In order to guarantee that rotor works normally, the magnitude of interference between impeller and main shaft is sufficiently large, to guarantee Speed of Rotation Loosening
Greater than maximum continuous speed.However, will increase the extrusion stress of wheel disc inner hole when magnitude of interference is excessive；Tear interference connection open simultaneously
Impeller when need very big external force, it will usually the mating surface of part is destroyed, to cause the damage of part.
Utility model content
The utility model discloses a kind of centrifugal blower multi-stage impeller mounting structures, it is intended to solve impeller spindle by interference
Amount works normally to guarantee rotor so that bring impeller installation difficulty is big, impeller internal stress is big, magnitude of interference is difficult to ensure and is closing
The problems such as suitable range and the difficult secondary disassembly of impeller.
The solution of the utility model is as follows:
The centrifugal blower multi-stage impeller mounting structure, the centre bore including multi-stage impeller and the main shaft through multi-stage impeller；
The main shaft corresponds to every one stage impeller edge and is divided axially into the shaft shoulder, special-shaped shaft part and cylindrical thread section；The abnormal shape shaft part is three
There are three high points for angle axis, i.e. section tool；The centre bore of every one stage impeller is delthyrium, with corresponding Axis Tripod clearance fit or transition
Cooperation, the high point distribution of delthyrium and the high point distribution of corresponding Axis Tripod are consistent, so that every one stage impeller is realized in special-shaped shaft part
It is circumferentially positioned to transmit torque；
The axial length of the axial length of centre bore and corresponding Axis Tripod is quite (certainly, it is contemplated that installation locking nut adds
Work cylindrical thread section needs reserved escape, and the width of escape is related with the diameter of cylindrical thread section)；The installation of cylindrical thread section
There is locking nut；If the diameter of the shaft shoulder is a, the maximum radial dimension of Axis Tripod is bmax, smallest radial is having a size of bmin, cylinder spiral shell
The diameter of line section is c, and the minimum outer diameter of locking nut is d, then a > bmax> bmin> c, bmax< d, so that every one stage impeller is logical
The shaft shoulder for crossing main shaft realizes axially position, and carries out axial locking to impeller by locking nut in cylindrical thread section and fix.
Further, the matching relationship of the centre bore of every one stage impeller and corresponding Axis Tripod is g6/H7 or k6/H7.
The multi-stage impeller can be arranged using in-line arrangement formula, successively be penetrated from one end of main shaft；Edge penetrates direction, Ge Jiye
The centre bore of wheel and the radial dimension of respective major axes are incremented by successively.
The multi-stage impeller can also be arranged using back-to-back type, successively be penetrated respectively from the both ends of main shaft；Every one end edge
Direction is penetrated, the centre bore of impellers at different levels and the radial dimension of respective major axes are incremented by successively.
Compared with existing connection structure, the utility model is had the advantages that
1, the utility model carries out axially position by the main shaft shaft shoulder, and cylindrical thread section carries out impeller by locking nut
Axial restraint, the special-shaped shaft part of ingenious setting and the corresponding delthyrium of impeller, so that the special-shaped axis of the delthyrium of impeller and main shaft
Section clearance fit connection, realizes the function that impeller is locked and torque transmits simple and effectively.The utility model is without warm
Dress technique can be mounted directly, solve magnitude of interference it is excessive caused by the problems such as impeller is difficult to dismantle, stress is big, while also solving
The problems such as too small bring impeller of magnitude of interference loosens, transmitting torque is small.
2, the utility model is not only suitable for the rotor structure of impeller in-line arrangement formula arrangement, is also applied for what impeller was arranged back-to-back
Rotor structure.
Detailed description of the invention
Fig. 1 is the mounting structure schematic diagram that the in-line arrangement formula of the utility model is arranged.
Fig. 2 is the mounting structure schematic diagram that the back-to-back type of the utility model is arranged.
Fig. 3 is the schematic diagram of impeller.
Fig. 4 is the schematic cross-section of special-shaped shaft part.
Fig. 5 is the reference standard of shaft/bore matching relationship.
Drawing reference numeral explanation:
1- main shaft；2- impeller；3- locking nut.
Specific embodiment
The utility model is further elaborated and is illustrated in the following with reference to the drawings and specific embodiments.
Embodiment one
The mounting structure as shown in Figure 1 in-line arrangement formula arrangement and arranged back-to-back, main shaft correspond to every one stage impeller along axial
It is divided into the shaft shoulder, special-shaped shaft part (being on-circular cross-section structure as the junction of impeller and main shaft) and cylindrical thread section.
As shown in Figure 3, Figure 4, special-shaped shaft part is Axis Tripod, i.e., there are three high points for section tool；The centre bore of every one stage impeller
For delthyrium, the cooperation for being g6/H7 or k6/H7 with corresponding Axis Tripod, the high point of the high point distribution and corresponding Axis Tripod of delthyrium
Distribution is consistent.In Fig. 3, Fig. 4 to the dimension mark d1 and d4 of axis and hole according to normative document DIN 32711-2-2009-en and
DIN 32711-1-2009-en (as shown in Figure 5).
Impellers at different levels successively penetrate main shaft from side, realize axial and week by the shaft shoulder, delthyrium (axis) and locking nut
To positioning, and then transmit torque.The installation of both stage impellers is only illustrated in Fig. 1, in fact can also arrange three-level, four with in-line arrangement
Grade impeller etc., along direction is penetrated, the centre bore of impellers at different levels and the radial dimension of respective major axes are incremented by successively.
Embodiment two
The mounting structure of the centrifugal blower mounting structure of back-to-back type arrangement as shown in Figure 2, every one stage impeller and main shaft with
Embodiment one is equivalent.
Impellers at different levels successively penetrate main shaft from two sides respectively, are realized by the shaft shoulder, delthyrium (axis) and locking nut axial
With circumferential positioning, and then torque is transmitted.The installation of both stage impellers is only illustrated in Fig. 2, and more stages in fact can also be installed
Impeller etc..Each lateral edge penetrates direction, and the centre bore of impellers at different levels and the radial dimension of respective major axes are incremented by successively；In most
Between both stage impellers share the same shaft shoulder, the shaft shoulder be the radial dimension of maximum position of entire main shaft (as needed, can be at this
Place's shaft shoulder makees other designs).
The mounting structure of the utility model carries out axially position using the shaft shoulder on main shaft, the delthyrium of impeller and main shaft it is different
Profile shaft section clearance fit or transition fit, then be fixed with locking nut, it can reduce impeller internal stress, realize impeller and master
Axis Fast Installation is fixed and is dismantled, and does not especially damage any part in disassembly.
In addition to above-mentioned mounting structure, centrifugal blower those skilled in the art can be to centrifugal blower other parts
Structure improves.
Claims (4)
1. a kind of centrifugal blower multi-stage impeller mounting structure, the centre bore including multi-stage impeller and the main shaft through multi-stage impeller；
It is characterized by:
The main shaft corresponds to every one stage impeller edge and is divided axially into the shaft shoulder, special-shaped shaft part and cylindrical thread section；The abnormal shape shaft part
For Axis Tripod, i.e., there are three high points for section tool；The centre bore of every one stage impeller be delthyrium, with corresponding Axis Tripod clearance fit or
Transition fit, the high point distribution of delthyrium and the high point distribution of corresponding Axis Tripod are consistent, so that every one stage impeller is in special-shaped shaft part
It realizes circumferentially positioned to transmit torque；
The axial length of centre bore is suitable with the axial length of corresponding Axis Tripod；Cylindrical thread section is equipped with locking nut；If axis
The diameter of shoulder is a, and the maximum radial dimension of Axis Tripod is bmax, smallest radial is having a size of bmin, the diameter of cylindrical thread section is c,
The minimum outer diameter of locking nut is d, then a > bmax> bmin> c, bmax< d, so that every one stage impeller is real by the shaft shoulder of main shaft
Existing axially position, and axial locking is carried out to impeller by locking nut in cylindrical thread section and is fixed.
2. centrifugal blower multi-stage impeller mounting structure according to claim 1, it is characterised in that: the center of every one stage impeller
The matching relationship of hole and corresponding Axis Tripod is g6/H7 or k6/H7.
3. centrifugal blower multi-stage impeller mounting structure according to claim 1, it is characterised in that: the multi-stage impeller uses
In-line arrangement formula arrangement, successively penetrates from one end of main shaft；Edge penetrates direction, the centre bore of impellers at different levels and the radial direction of respective major axes
Size is incremented by successively.
4. centrifugal blower multi-stage impeller mounting structure according to claim 1, it is characterised in that: the multi-stage impeller uses
Back-to-back type arrangement, successively penetrates respectively from the both ends of main shaft；Every one end edge penetrates direction, the centre bore and phase of impellers at different levels
Answer the radial dimension of main shaft incremented by successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530752.7U CN209145967U (en) | 2019-04-18 | 2019-04-18 | A kind of centrifugal blower multi-stage impeller mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530752.7U CN209145967U (en) | 2019-04-18 | 2019-04-18 | A kind of centrifugal blower multi-stage impeller mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145967U true CN209145967U (en) | 2019-07-23 |
Family
ID=67291797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920530752.7U Active CN209145967U (en) | 2019-04-18 | 2019-04-18 | A kind of centrifugal blower multi-stage impeller mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209145967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915410A (en) * | 2019-04-18 | 2019-06-21 | 西安联创分布式可再生能源研究院有限公司 | A kind of centrifugal blower multi-stage impeller mounting structure |
-
2019
- 2019-04-18 CN CN201920530752.7U patent/CN209145967U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915410A (en) * | 2019-04-18 | 2019-06-21 | 西安联创分布式可再生能源研究院有限公司 | A kind of centrifugal blower multi-stage impeller mounting structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4339782B2 (en) | Fixing device for fixing the impeller to the shaft | |
| JPH09273564A (en) | Fastening structure of impeller | |
| CN205136122U (en) | Blade angle adjustable axial fan impeller | |
| US7563204B2 (en) | Method and system for coupling a flywheel assembly onto a shaft of an electric motor using a self-holding taper | |
| KR930002694A (en) | Impeller Wheel Lock of Drive Assembly | |
| US11025131B2 (en) | Adaptor for generator | |
| CN209145967U (en) | A kind of centrifugal blower multi-stage impeller mounting structure | |
| WO2003015904A3 (en) | Mixing impeller device and associated mixing method | |
| CN109915410A (en) | A kind of centrifugal blower multi-stage impeller mounting structure | |
| CN209145915U (en) | A kind of energy recovery type Driven by Coaxial centrifugal blower group | |
| BR102020004466A2 (en) | WIND TURBINE | |
| CN208364625U (en) | Shaft coupling | |
| US5356236A (en) | Device for connecting two elements in rotation | |
| CN202810955U (en) | Disk shaft connection structure | |
| CN214533686U (en) | Assembled double suction pump impeller structure | |
| CN204334262U (en) | A kind of disc type sprocket wheel motor | |
| CN109586498B (en) | Motorized spindle and motor | |
| CN207701461U (en) | Variable speed Silence Process axial flow blower coupling structure | |
| CN109882428A (en) | A kind of energy recovery type Driven by Coaxial centrifugal blower group | |
| CN211085529U (en) | Flange type torque sensor mounting base | |
| CN219865557U (en) | Pump coupling positioning device | |
| CN221299611U (en) | Axial fan and air conditioner | |
| CN219685409U (en) | Bowl-shaped plug disassembling tool | |
| CN2293670Y (en) | Expanding structure for air blower | |
| RU158311U1 (en) | AXIAL FAN BLADE FASTENING ASSEMBLY |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230807 Address after: 710075 Shaanxi city of Xi'an province high tech Zone Fenghui Road No. 8 Patentee after: XI'AN SHAANGU POWER Co.,Ltd. Address before: Room 403, complex building, Shaangu Power Industrial Park, No.8, Fenghui South Road, high tech Zone, Xi'an City, Shaanxi Province, 710075 Patentee before: XI'AN LIANCHUANG DISTRIBUTED RENEWABLE ENERGY RESEARCH INSTITUTE Co.,Ltd. |