CN214465114U - Axial-flow main fan impeller clearance adjusting device - Google Patents
Axial-flow main fan impeller clearance adjusting device Download PDFInfo
- Publication number
- CN214465114U CN214465114U CN202120647596.XU CN202120647596U CN214465114U CN 214465114 U CN214465114 U CN 214465114U CN 202120647596 U CN202120647596 U CN 202120647596U CN 214465114 U CN214465114 U CN 214465114U
- Authority
- CN
- China
- Prior art keywords
- flange
- clearance
- protection ring
- machine shell
- main machine
- 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
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an axial flow main ventilator impeller clearance adjusting device, which comprises a main machine shell and a protection ring; one end of the main machine shell is provided with a main machine shell flange, one end of the protection ring is provided with a protection ring flange, and the main machine shell flange is connected with the protection ring flange through a bolt; be equipped with a plurality of clearance adjustment seats on the host computer casing flange, leave the clearance between the excircle of clearance adjustment seat and guard circle flange, be equipped with the screw hole on the clearance adjustment seat, threaded hole is equipped with adjusting bolt, and adjusting bolt sets up along the guard circle is radial, and adjusting bolt top tight guard circle flange. The utility model discloses a detect the clearance of blade and guard circle, be not conform to the position control of requirement to the clearance, simple reliable, convenient and fast has improved regulation efficiency, practices thrift installation and debugging time greatly.
Description
Technical Field
The invention relates to the field of fans, in particular to an impeller gap adjusting device of an axial flow main fan.
Background
GB/T21151 technical conditions of axial flow main ventilator for coal mine 3.3.2.1 provides: the clearance between the blades of the impeller of the ventilator and the casing (or the protective ring) is uniform, the radial single-side clearance is not less than 1 per thousand-2 per thousand of the nominal diameter of the impeller, and the minimum value is not less than 2.5 mm.
In the existing mining main ventilator, a main machine shell and a protection ring are welded parts, and the main machine shell is horizontally split along a central line. The main ventilator is generally transported in bulk, assembled and installed on site. The main ventilator all has micro-deformation in transportation, installation, leads to the blade of impeller and the clearance between the guard circle to be uneven, even does not accord with the standard, needs adjust the impeller clearance once more after the installation. Because the impeller clearance can not atress in the clearance adjustment process, otherwise the blade is easy to be out of shape or damage, has increased the adjustment degree of difficulty. On-site installation personnel generally adjust the position of the protective ring by using a crane or a jack, adjust the roundness of the protective ring by using a chain block, find out a proper gap and then fasten the connecting bolt group of the main machine shell and the protective ring.
The existing method for adjusting the impeller clearance of the axial flow main ventilator has the following problems:
1. the method of adjusting the position of the protective ring by a crane or a jack and the method of adjusting the clearance of the impeller by the crane have low precision and cannot ensure the required requirements; the method for adjusting the clearance of the impeller by the jack has low labor efficiency, and if a plurality of clearances on the protective ring are too small or the protective ring deforms in the transportation process, the proper clearance required by the national standard is more difficult to adjust.
2. The method of adjusting the impeller clearance by adopting a crane or a jack has the disadvantages of repeated operation, time and labor consumption and high cost because a reliable fulcrum cannot be found.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a simple structure, it is with low costs, adjust efficiently, and can reduce workman's intensity of labour's axial compressor main blower impeller's blade clearance adjusting device.
The utility model provides a technical scheme of above-mentioned problem is: an impeller gap adjusting device of an axial flow main ventilator comprises a main machine shell and a protective ring; one end of the main machine shell is provided with a main machine shell flange, one end of the protection ring is provided with a protection ring flange, and the main machine shell flange is connected with the protection ring flange through a bolt; be equipped with a plurality of clearance adjustment seats on the host computer casing flange, leave the clearance between the excircle of clearance adjustment seat and guard circle flange, be equipped with the screw hole on the clearance adjustment seat, threaded hole is equipped with adjusting bolt, and adjusting bolt sets up along the guard circle is radial, and adjusting bolt top tight guard circle flange.
In the impeller gap adjusting device of the axial flow main ventilator, the plurality of gap adjusting seats are uniformly arranged along the circumferential direction; each adjusting bolt is provided with a locking nut.
In the impeller gap adjusting device for the axial flow main ventilator, the difference between the radiuses of pitch circles of the inner side surfaces of the gap adjusting seats and the outer circle of the flange of the protection ring is 5 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a detect the clearance of blade and guard circle, be not conform to the position control of requirement to the clearance, simple reliable, convenient and fast has improved regulation efficiency, practices thrift installation and debugging time greatly.
2. The utility model discloses the crane that need not be when making the clearance adjustment of blade and guard circle, practiced thrift the cost.
3. The utility model discloses structurally at original main blower, only increase the clearance adjustment seat, adjusting bolt, lock nut, incremental cost can neglect. After the clearance of main ventilation blower impeller blade is adjusted, locking adjusting bolt prevents that the guard circle from warping rebound, and the blade clearance of impeller is more reliable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is an enlarged view of the gap adjusting seat of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-3, the present invention comprises a main frame housing 1 and a guard ring 4; one end of the host shell 1 is provided with a host shell flange 1.1, and the host shell flange 1.1 is connected with a guard ring flange 4.1 through bolts. A protection ring flange 4.1 is arranged at one end of a protection ring 4, a main ventilator motor 2 is installed in an inner barrel of a main machine shell 1, a main ventilator impeller 3 is installed at the shaft extension end of a motor and is positioned through a baffle 3.1, and the protection ring 4 is installed outside the impeller 3. The welding has a plurality of clearance adjustment seats 5.2 on host computer casing flange 1.1, and a plurality of clearance adjustment seats 5.2 are evenly arranged along the circumferencial direction, the pitch circle at a plurality of clearance adjustment seat medial surface places and the difference of the radius of guard circle flange excircle be 5 mm. Be equipped with the screw hole on the clearance adjustment seat 5.2, threaded hole is equipped with adjusting bolt 5.1, and adjusting bolt 5.1 radially sets up along guard circle 4, and adjusting bolt 5.1 top tight guard circle flange 4.1's excircle. The adjusting bolt 5.1 is also provided with a locking nut 5.3.
The utility model can finely adjust the protecting ring 4 up, down, left and right in the same vertical plane by adjusting the adjusting bolt 5.1, and can finely adjust the roundness of the protecting ring, thereby keeping a reasonable gap between the blade 3.2 of the impeller 3 and the protecting ring 4; and (3) fastening a locking nut 5.3, and fixing a gap between the blade 3.2 of the impeller 3 and the protective ring 4 to ensure the operation safety of the main ventilator.
Claims (3)
1. The utility model provides an axial compressor main blower impeller clearance adjusting device which characterized by: comprises a main machine shell and a protection ring; one end of the main machine shell is provided with a main machine shell flange, one end of the protection ring is provided with a protection ring flange, and the main machine shell flange is connected with the protection ring flange through a bolt; be equipped with a plurality of clearance adjustment seats on the host computer casing flange, leave the clearance between the excircle of clearance adjustment seat and guard circle flange, be equipped with the screw hole on the clearance adjustment seat, threaded hole is equipped with adjusting bolt, and adjusting bolt sets up along the guard circle is radial, and adjusting bolt top tight guard circle flange.
2. The axial-flow main blower impeller gap adjusting device according to claim 1, wherein: the plurality of gap adjusting seats are uniformly arranged along the circumferential direction; each adjusting bolt is provided with a locking nut.
3. The axial-flow main blower impeller gap adjusting device according to claim 1, wherein: the difference between the pitch circle of the inner side surfaces of the plurality of clearance adjusting seats and the radius of the outer circle of the flange of the protection ring is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647596.XU CN214465114U (en) | 2021-03-31 | 2021-03-31 | Axial-flow main fan impeller clearance adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647596.XU CN214465114U (en) | 2021-03-31 | 2021-03-31 | Axial-flow main fan impeller clearance adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465114U true CN214465114U (en) | 2021-10-22 |
Family
ID=78176264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120647596.XU Active CN214465114U (en) | 2021-03-31 | 2021-03-31 | Axial-flow main fan impeller clearance adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465114U (en) |
-
2021
- 2021-03-31 CN CN202120647596.XU patent/CN214465114U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105298561B (en) | Packing-off piece installation device of turbine stator blades and use method of packing-off piece installation device | |
| EP2557277B1 (en) | Method and Apparatus to Facilitate Turbine Casing Assembly | |
| CN214465114U (en) | Axial-flow main fan impeller clearance adjusting device | |
| US5362204A (en) | Gas turbine with flanged-on exhaust gas casing | |
| CN109209517B (en) | Second-stage stationary blade ring assembly of self-adaptive thermal expansion of flue gas turbine | |
| US20120189452A1 (en) | Impeller Attachment Method | |
| CN204984986U (en) | Centrifugal fan | |
| CN203670299U (en) | Heavy slurry pump with overflow assembly capable of being quickly demounted and mounted | |
| CN220687664U (en) | Adjustable impeller structure of centrifugal pneumatic conveying fan | |
| CN207728684U (en) | A kind of bolt protection cup and its fan blade of application | |
| CN207892867U (en) | A kind of mining axial blower | |
| CN203627305U (en) | Impeller for reactor top type fan | |
| CN220151608U (en) | Adjustable stator blade fixing clamp of gas turbine | |
| CN217056237U (en) | Combined guide wheel | |
| CN118088489A (en) | Impeller capable of adjusting fan blade angle | |
| CN112720338B (en) | Large-interference stationary blade ring dismounting device of gas turbine | |
| CN113309732B (en) | Gas conveying device | |
| CN213016866U (en) | Anti-leakage fan | |
| CN217282402U (en) | Motor rotor device | |
| CN217633062U (en) | Fan transmission shaft for special thread processing furnace | |
| CN218575486U (en) | Bearing dismounting structure | |
| CN208795006U (en) | A kind of improved material-blocking wall of ring cooling machine device | |
| CN219299636U (en) | Vibration suppression device for shaft blower motor | |
| CN112621652B (en) | Assembly method of front intermediate bearing cover of aero-engine | |
| RU2296888C1 (en) | Unit for fastening pump wheel on shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |