CN205559340U - Multistage centrifugal fan air speed automatic regulating apparatus - Google Patents
Multistage centrifugal fan air speed automatic regulating apparatus Download PDFInfo
- Publication number
- CN205559340U CN205559340U CN201620120354.4U CN201620120354U CN205559340U CN 205559340 U CN205559340 U CN 205559340U CN 201620120354 U CN201620120354 U CN 201620120354U CN 205559340 U CN205559340 U CN 205559340U
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- China
- Prior art keywords
- air door
- centrifugal fan
- ventilation duct
- ventilation pipe
- rotating shaft
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Abstract
The utility model discloses a multistage centrifugal fan air speed automatic regulating apparatus, include: ventilation pipe and flange, flange sets up the both ends at the ventilation pipe respectively, the ventilation pipe outside is provided with an electric actuator, electric actuator's output is provided with a shaft coupling, the shaft coupling tip is provided with the first air door pivot of crossing the ventilation pipe, be provided with the first deep bead that corresponds with the ventilation pipe internal diameter in the first air door pivot, first air door pivot below is provided with the second air door pivot of crossing the ventilation pipe, be provided with the second deep bead that corresponds with the ventilation pipe internal diameter in the pivot of second air door. In this way, multistage centrifugal fan air speed automatic regulating apparatus, utilize electric actuator to realize the electrodeless rotation regulation and the auto -lock of first air door pivot, realize that it changes to overflow sectional area in the ventilation pipe.
Description
Technical field
This utility model relates to centrifugal blower field, particularly relates to a kind of Multi-stage centrifugal fan air velocity self-checking device.
Background technology
Multi-stage centrifugal fan belongs to fluid machinery, due to the error manufacturing, processing and on the links such as assembling, the performance curve that each Multi-stage centrifugal fan can be caused to dispatch from the factory is different, therefore, each Multi-stage centrifugal fan general assembly all should carry out attribute testing after completing, and draws characteristic curve to judge whether this blower fan meets factory calibration.
Need to be connected to the area of flow section in the airduct of Multi-stage centrifugal fan by control during Multi-stage centrifugal fan test, in order to regulate the operating current in fan driving motor, when operating current is stablized in a certain value, measure the blast of fan inlet and outlet, form one group of data.Repeat above procedure repeatedly after, " electric current blast " curve of this blower fan can be drawn out by the multi-group data obtained, use this curve to judge the stability of this blower fan according to relevant criterion.
The air velocity adjusting meanss using Non-follow control in industry at present, this kind of adjusting means has the disadvantage in that more
Degree of regulation is the best: the regulation angle of air velocity manual regulating device is completely by operator's control, it is impossible to precisely regulate；
Self-lock ability is the best: air velocity manual regulating device needs electrodeless regulation, and this requirement makes the self-locking property of manual damper to ensure, in the case of fan pressure is excessive, the area that may result in flow section in airduct changes；
nullOperate complicated: test uses and determines the method that electric current surveys blast，In regulation airduct after the area of flow section，Drive the electric current in motor will not change immediately to a stationary value，Therefore predetermined work electric current and real work electric current are contrasted after needing the current stabilization of work drive motor by the time after regulation air velocity manual regulating device，If the real work electric current of work drive motor relatively predetermined work electric current difference is bigger，Then need to be changed the real work electric current of work drive motor by regulation air velocity manual regulating device，Again contrast the difference of the two value，Repeat this process，Until this difference reaches to measure blast after within tolerance，The installation site of manual damper is away from motor farther out，Tester is caused repeatedly to travel to and fro between air velocity manual regulating device and electric control room before measuring one group of data，Or need two testers be operated the reading of current of electric respectively and change the switch angle of air velocity manual regulating device；
Automaticity is low: the characteristic without automatization of air velocity manual regulating device can hinder the Automation Construction of factory.
More than need to improve.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of Multi-stage centrifugal fan air velocity self-checking device, it is achieved the electrodeless regulation of air velocity, promotes and is automatically adjusted precision and convenience.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide a kind of Multi-stage centrifugal fan air velocity self-checking device, including: ventilation duct and adpting flange, described adpting flange is separately positioned on the two ends of ventilation duct, a YE it is provided with outside described ventilation duct, the outfan of described YE is provided with a shaft coupling, described shaft coupling end is provided with the first air door rotating shaft of cross ventilation pipe, it is provided with the first gear aerofoil corresponding with ventilation duct internal diameter in described first air door rotating shaft, the second air door rotating shaft of cross ventilation pipe it is provided with below described first air door rotating shaft, it is provided with the second gear aerofoil corresponding with ventilation duct internal diameter in described second air door rotating shaft.
In one preferred embodiment of this utility model, described ventilation duct is cylindrical structure, and described first gear aerofoil and second gear aerofoil are respectively circular slab.
In one preferred embodiment of this utility model, described second air door rotating shaft front end is provided with the manual wrench being positioned at outside ventilation duct.
In one preferred embodiment of this utility model, described first air door shaft end is provided with the reading pointer being positioned at outside ventilation duct.
In one preferred embodiment of this utility model, described YE is provided with self-locking device, described YE is connected with control device.
The beneficial effects of the utility model are: a kind of Multi-stage centrifugal fan air velocity self-checking device that this utility model is pointed out, YE is utilized to realize electrodeless rotation regulation and the self-locking of the first air door rotating shaft, accurately regulation first gear aerofoil angle in ventilation duct, realize the area change of flow section, the beneficially construction of Multi-stage centrifugal fan automatic checkout system in ventilation duct.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of this utility model a kind of Multi-stage centrifugal fan air velocity self-checking device one preferred embodiment.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Referring to Fig. 1, this utility model embodiment includes:
A kind of Multi-stage centrifugal fan air velocity self-checking device, including: ventilation duct 6 and adpting flange 2, described adpting flange 2 is separately positioned on the two ends of ventilation duct 6.Utilize adpting flange 2, ventilation duct 6 is connected on the pipeline that is connected with Multi-stage centrifugal fan, it is achieved the keying to pipeline regulates.
A YE 4 it is provided with outside described ventilation duct 6, the outfan of described YE 4 is provided with a shaft coupling 5, described shaft coupling 5 end is provided with the first air door rotating shaft 3 of cross ventilation pipe 6, it is provided with the first gear aerofoil 31 corresponding with ventilation duct 6 internal diameter in described first air door rotating shaft 3, described YE 4 is connected with control device.Utilize and control the device regulation to YE 4, operator easily realizes the electrodeless rotation regulation of the first air door rotating shaft 3, the accurately regulation first gear aerofoil 31 angle in ventilation duct 6, realize the area change of flow section, the beneficially construction of Multi-stage centrifugal fan automatic checkout system in ventilation duct 6.
Described first air door rotating shaft 7 end is provided with the angle that the reading pointer 1 being positioned at outside ventilation duct 6, beneficially operator regulate at external observation first gear aerofoil 31, regulates convenient, beneficially the collection of experimental data.
Being provided with self-locking device on described YE 4, YE 4 rotates after regulation completes, and utilizes self-locking device to complete oneself's locking, it is to avoid inertial rotation or Wind-driven rotating and the unstable factor brought, the stability of lifting device.
The second air door rotating shaft 71 of cross ventilation pipe 6 it is provided with below described first air door rotating shaft 3, being provided with the second gear aerofoil 72 corresponding with ventilation duct 6 internal diameter in described second air door rotating shaft 71, described second air door rotating shaft 71 front end is provided with the manual wrench 7 being positioned at outside ventilation duct 6.Utilize manual wrench 7, it is achieved the second air door rotating shaft 71 and the manual rotation of second gear aerofoil 72, standby when YE 4 lost efficacy, improve work efficiency, the beneficially maintenance of YE 4.
Described ventilation duct 6 is cylindrical structure, and described first gear aerofoil 31 and second gear aerofoil 72 are respectively circular slab, first gear aerofoil 31 and the rotation of second gear aerofoil 72, can realize the rea adjusting of flow section in ventilation duct 6.
In sum, a kind of Multi-stage centrifugal fan air velocity self-checking device that this utility model is pointed out, stability is high, and regulation is convenient, improves the test of the work efficiency of operator, beneficially Multi-stage centrifugal fan and the construction of Auto-Test System.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (5)
1. a Multi-stage centrifugal fan air velocity self-checking device, including: ventilation duct and adpting flange, described adpting flange is separately positioned on the two ends of ventilation duct, it is characterized in that, a YE it is provided with outside described ventilation duct, the outfan of described YE is provided with a shaft coupling, described shaft coupling end is provided with the first air door rotating shaft of cross ventilation pipe, it is provided with the first gear aerofoil corresponding with ventilation duct internal diameter in described first air door rotating shaft, the second air door rotating shaft of cross ventilation pipe it is provided with below described first air door rotating shaft, it is provided with the second gear aerofoil corresponding with ventilation duct internal diameter in described second air door rotating shaft.
Multi-stage centrifugal fan air velocity self-checking device the most according to claim 1, it is characterised in that described ventilation duct is cylindrical structure, described first gear aerofoil and second gear aerofoil are respectively circular slab.
Multi-stage centrifugal fan air velocity self-checking device the most according to claim 1, it is characterised in that described second air door rotating shaft front end is provided with the manual wrench being positioned at outside ventilation duct.
Multi-stage centrifugal fan air velocity self-checking device the most according to claim 1, it is characterised in that described first air door shaft end is provided with the reading pointer being positioned at outside ventilation duct.
Multi-stage centrifugal fan air velocity self-checking device the most according to claim 1, it is characterised in that be provided with self-locking device on described YE, described YE is connected with control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620120354.4U CN205559340U (en) | 2016-02-15 | 2016-02-15 | Multistage centrifugal fan air speed automatic regulating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620120354.4U CN205559340U (en) | 2016-02-15 | 2016-02-15 | Multistage centrifugal fan air speed automatic regulating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559340U true CN205559340U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620120354.4U Expired - Fee Related CN205559340U (en) | 2016-02-15 | 2016-02-15 | Multistage centrifugal fan air speed automatic regulating apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN205559340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500581A (en) * | 2019-08-29 | 2019-11-26 | 江苏闳业机械股份有限公司 | A kind of flame assembly machine burning fire row of band fire adjustment |
| WO2020015632A1 (en) * | 2018-07-19 | 2020-01-23 | 南京久诺科技有限公司 | Full-range high-precision air volume adjustment device |
-
2016
- 2016-02-15 CN CN201620120354.4U patent/CN205559340U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020015632A1 (en) * | 2018-07-19 | 2020-01-23 | 南京久诺科技有限公司 | Full-range high-precision air volume adjustment device |
| CN110500581A (en) * | 2019-08-29 | 2019-11-26 | 江苏闳业机械股份有限公司 | A kind of flame assembly machine burning fire row of band fire adjustment |
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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: 20160907 Termination date: 20180215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |