CN212225573U - Multistage turbine fan for papermaking - Google Patents
Multistage turbine fan for papermaking Download PDFInfo
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- CN212225573U CN212225573U CN202020521976.4U CN202020521976U CN212225573U CN 212225573 U CN212225573 U CN 212225573U CN 202020521976 U CN202020521976 U CN 202020521976U CN 212225573 U CN212225573 U CN 212225573U
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- 241001189642 Theroa Species 0.000 description 1
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Abstract
The utility model relates to a multistage turbine fan for papermaking, the utility model provides a prior art's problem, its technical scheme main points are, its characterized in that: the main gear is arranged in the gear box, the center of the main gear is in transmission connection with the driving shaft, the first independent pump head and the second independent pump head are independent turbine fans with inlet pipes arranged at the inlet ports, the inlet ports of the first independent pump head and the auxiliary pump head face back to each other, rotors of the first independent pump head and rotors of the auxiliary pump head are coaxially linked rotors, the middle section of the coaxially linked rotors is in transmission connection with the first side of the main gear, rotors of the second independent pump head are in transmission connection with the second side of the main gear, and the transmission ratio of the rotors of the second independent pump head to the main gear is smaller than or equal to that of the coaxially linked rotors to the main gear.
Description
Technical Field
The utility model belongs to a flat fan relates to a multistage turbine fan for papermaking.
Background
The turbo fan, i.e. the turbo fan, is generally mainly a centrifugal fan, and the turbo fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, boats and buildings for ventilation, dust removal and cooling; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind swimming and air cushion boat inflation and propulsion. The department has applied for the cantilever type high-speed centrifugal fan of adjustable stator angle of patent with publication number CN204828061U with centrifugal fan in 2015 in the comparatively extensive use in papermaking trade, its technical characterstic is:
cantilever type high-speed centrifugal fan of adjustable stator angle, including the spiral case, the impeller and drive rotatory transmission shaft by the motor, the impeller is installed in the spiral case, the impeller is connected with the transmission shaft and is driven rotatoryly by the transmission shaft, install angle-adjustable's ware of prewhirling on the spiral case, the ware of prewhirling includes drive arrangement, the roating seat, inner circle and rotatable outer lane, drive arrangement is connected with the first member of installing on the outer lane, install the second member of being connected with the roating seat on the outer lane, the inner circle all is coaxial with the impeller with the outer lane, the air intake department in impeller the place ahead is all installed to inner circle and outer lane, it is rotatory to be connected with the stator on the roa. Still include the gear speed increaser, the gear speed increaser adopts the single-stage acceleration rate, the gear speed increaser includes the gear wheel, the bearing and the thrust disc that prevents the gear wheel skew, be equipped with the pinion on the transmission shaft, the transmission shaft is supported by slide bearing, pinion and gear wheel meshing, thereby the thrust disc is installed on the transmission shaft and is set up the more that prevents the gear wheel and produce when high-speed rotation in the both sides of gear wheel, prevent the unable meshing of gear wheel and the epaxial pinion of rotation, the gear wheel is connected with the motor and drives the transmission. The volute is internally provided with an inner shell, the inner shell is provided with an impeller fixed wheel cover and a suction pipe, the volute and the inner shell are matched to form a gas flow channel, the suction pipe is connected with the impeller fixed wheel cover, and the inner shell, the impeller fixed wheel cover and the suction pipe form a body and are embedded in the volute. The impeller is driven to rotate by the transmission shaft, so that gas is sucked from the suction pipe at a high speed and finally forms high-temperature gas to be discharged from the outlet of the volute at a high speed through the flow channel of the impeller with high rotating speed, and thus a vacuum state is formed at the suction inlet of the impeller, and vacuum extraction is realized.
The above patents of this department disclose: the transmission shaft, the volute, the impeller static wheel cover and the suction pipe are matched to form an independent pump head, and the independent pump head is erected on one side of the gear speed increaser to realize vacuum extraction at a single position of a vacuum pump; or two independent pump heads are respectively erected on two sides of the gear speed increasing box, so that more than two different positions can be vacuum extracted by one vacuum pump; for the structure of two, four or six independent pump heads, one, two or three transmission shafts can be adopted, and one transmission shaft corresponds to two independent pump heads and adopts a symmetrical arrangement structure. One shaft corresponds to the two pump heads and adopts a symmetrical arrangement structure. Each pump head can be designed into the same structural size to meet the requirements of various vacuum degree extraction. The outlets of the pump heads can be communicated with each other and independently discharged, high-temperature gas discharged from the outlets can be directly discharged by connecting a silencer, and heat can be recovered by a heat exchanger for other purposes. However, only the above contents do not realize multi-stage adjustment, and cannot expand the application range, thereby limiting the application and use in the paper making industry.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prior art exist can't realize multistage adjustment, can't enlarge the range of application, inject the problem of using for the application that represents at the papermaking trade, provide a multistage turbine fan for papermaking.
The utility model provides a technical scheme that its technical problem adopted is: a multi-stage turbo fan for paper making is composed of a drive shaft driven by motor, a main gear, a gear box, the first and the second independent pump heads, and an auxiliary pump head selectively connected to air channel according to working condition, the main gear is arranged in the gear box, the center of the main gear is in transmission connection with the driving shaft, the first independent pump head and the second independent pump head are independent turbo fans with inlet pipes, the inlet ports of the first independent pump head and the auxiliary pump head face back to each other, the rotor of the first independent pump head and the rotor of the auxiliary pump head are coaxial linkage rotors, the middle section of the coaxial linkage rotor is in transmission connection with the first side of the main gear, and the rotor of the second independent pump head is in transmission connection with the second side of the main gear, and the transmission ratio of the rotor of the second independent pump head to the main gear is smaller than or equal to that of the coaxially linked rotor and the main gear. The utility model discloses in with the form of first independent pump head and supplementary pump head adopted the coaxial linkage rotor, and supplementary pump head can select the concrete form of connecting the wind path according to the operating mode demand, consequently can realize different negative pressure operating modes under the little circumstances of power adjustment change, specifically do: the negative pressure value can be formed by connecting auxiliary pump head and first independent pump head, and the independent pump head of second and auxiliary pump head are connected and also can be formed a negative pressure value, and first independent pump head and the independent pump head of second then can provide different negative pressure values alone, and first independent pump head, the independent pump head of second and auxiliary pump head series connection each other can form a negative pressure operating mode again, just, with this department before the application still a great difference point just lie in, the rotor of the independent pump head of second and the drive ratio of master gear are less than or equal to the drive ratio of coaxial linkage rotor and master gear for the negative pressure value of the independent pump head of first and second is different, consequently, through the connected mode of adjusting the connection wind path, can realize the multistage adjustment, enlarged the range of application, improved the application use of this application in the papermaking trade.
Preferably, the coaxially linked rotor is connected with the main gear in a direct gear meshing or gear set meshing transmission mode, and the rotor of the second independent pump head is connected with the main gear in a direct gear meshing or gear set meshing transmission mode.
Preferably, the driving shaft and the main gear are in meshed helical gear transmission, the driving shaft and the main gear are perpendicular to each other, the coaxially linked rotor and the main gear are in meshed helical gear transmission, the coaxially linked rotor and the main gear are perpendicular to each other, the rotor of the second independent pump head and the main gear are in meshed helical gear transmission, the rotor of the second independent pump head and the main gear are perpendicular to each other, and the coaxially linked rotor and the rotor of the second independent pump head rotate in the same direction. The helical gear has good performance: the meshing process between the gear teeth of the helical cylindrical gear is a transition process, and the stress on the gear teeth is gradually increased from small to large and then decreased from large to small; the helical gear is suitable for high-speed and heavy-load conditions. The contact ratio is large: the increase of the contact ratio improves the bearing capacity of the gear. Thereby prolonging the life of the gear. The contact ratio is mainly determined by the meshing time, and the helical gear has long meshing time and large contact area, so that the stress is reduced. And the transmission is stable, and the economical efficiency is improved. The structure is compact: the smaller the minimum number of teeth, the more compact the structure.
Preferably, the output port of the first independent pump head is connected to the input port of the auxiliary pump head through a controlled connecting pipe, and the output port of the auxiliary pump head is connected to the input port of the second independent pump head through a controlled connecting pipe. The technical scheme is a connection mode under the working condition of maximum negative pressure, and is also the most common connection mode.
Preferably, the first independent pump head and the auxiliary pump head are all provided with a volute, an impeller and a rotor, all the rotors are meshed with the main gear, all the impellers are driven by the corresponding rotors, the impeller and the rotor are matched with the volute, the volute output port of the independent turbine fan is smaller than the volute output port of the auxiliary pump head, and the input port of the auxiliary pump head is provided with a flange plate for connecting a controlled connecting pipe.
Preferably, the coaxial linkage rotor comprises a rotor spindle, a helical gear is arranged at the middle section of the rotor spindle, two limit rings are fixed on the rotor spindle, the two limit rings are located on the same side of the helical gear, and two ends of the rotor spindle are connected with the impeller. The utility model discloses in make the in-process loss of negative pressure transmission between first independent pump head and the supplementary pump head as far as possible reduce to improve holistic work efficiency.
Preferably, the diameter of the main gear is at least 5 times the diameter of the drive gear on the rotor of the second independent pump head.
The utility model discloses a substantive effect is: the utility model discloses can realize the production of multiple negative pressure operating mode, can adapt to various different operating mode demands, it is most suitable to use in the occasion that needs multiple different negative pressures, through the connected mode of adjusting the connecting wind path, can realize multistage adjustment, enlarged the range of application, improved the application use of this application in the papermaking trade; meanwhile, the virtual redundant backup can be formed through a quick dismounting and repairing mode, and a better using effect is achieved.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 is a schematic view of the force transmission of the main gear according to the present invention.
In the figure: 1. the device comprises a first independent pump head, a second independent pump head, a third independent pump head, a fourth.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples.
Example 1:
a multi-stage turbo fan for papermaking (see attached figures 1 and 2) comprises a driving shaft 4 driven by a motor, a main gear 5, a gear box 6, a first independent pump head 1, a second independent pump head 2 and an auxiliary pump head 3 selectively connected with an air path according to working condition requirements, wherein the main gear is arranged in the gear box, the center of the main gear is in transmission connection with the driving shaft, the first independent pump head and the second independent pump head are independent turbo fans of which the input ports are provided with suction pipes 9, the input ports of the first independent pump head and the auxiliary pump head face opposite directions, the rotor of the first independent pump head and the rotor of the auxiliary pump head are coaxially linked rotors 7, the middle section of the coaxially linked rotors is provided with a first gear 71, the first gear is in transmission connection with the first side of the main gear, and the second independent rotor is provided with a second gear 81, the second gear is in transmission connection with the second side of the main gear, and the transmission ratio of the rotor 8 of the second independent pump head to the main gear is smaller than that of the coaxial linkage rotor to the main gear. The drive shaft and the main gear are in meshed helical gear transmission, the drive shaft is perpendicular to the main gear, the coaxial linkage rotor and the main gear are in meshed helical gear transmission, the coaxial linkage rotor is perpendicular to the main gear, the rotor of the second independent pump head is in meshed helical gear transmission with the main gear, the rotor of the second independent pump head is perpendicular to the main gear, and the coaxial linkage rotor and the rotor of the second independent pump head rotate in the same direction. The positive thrust face 20 of each gear cancels the positive thrust through the thrust disk.
The independent pump head portion in this embodiment is the same as the independent pump head that this department published before, all: including spiral case 13, impeller 12 and drive rotatory drive shaft 4 by the motor, impeller 12 installs in the spiral case, the impeller is connected with the rotor, the rotor in this embodiment is this department promptly in the technical scheme last time the transmission shaft, the impeller is connected with the transmission shaft and is driven rotatoryly by the transmission shaft, but install angle regulation's ware of prewhirling on the spiral case, the ware of prewhirling includes drive arrangement 10, the roating seat, inner circle and rotatable outer lane, drive arrangement is connected with the first member of installing on the outer lane, install the second member of being connected with the roating seat on the outer lane, the inner circle all is coaxial with the impeller with the outer lane, the air intake department in impeller the place ahead is all installed with the outer lane to the inner circle, be connected with import stator 11 on the roating seat and drive. Still include the gear speed increaser, the gear speed increaser adopts the single-stage acceleration rate, the gear speed increaser includes the master gear, the bearing and the thrust disc that prevents the gear wheel skew, be equipped with the pinion on the transmission shaft, the transmission shaft is supported by slide bearing, pinion and gear wheel meshing, thereby the thrust disc is installed on the transmission shaft and is set up the more that prevents the gear wheel and produce when high-speed rotation in the both sides of gear wheel, prevent the unable meshing of gear wheel and the epaxial pinion of rotation, the gear wheel is connected with the motor and drives the transmission shaft. The volute is internally provided with an inner shell, the inner shell is provided with an impeller fixed wheel cover and a suction pipe, the volute and the inner shell are matched to form a gas flow channel, the suction pipe is connected with the impeller fixed wheel cover, and the inner shell, the impeller fixed wheel cover and the suction pipe form a body and are embedded in the volute. The impeller is driven to rotate by the transmission shaft, so that gas is sucked from the suction pipe at a high speed and finally forms high-temperature gas to be discharged from the outlet of the volute at a high speed through the flow channel of the impeller with high rotating speed, and thus a vacuum state is formed at the suction inlet of the impeller, and vacuum extraction is realized. In this embodiment the diameter of the main gear is at least 5 times the diameter of the drive gear on the rotor of the second independent pump head. The delivery outlet of first independent pump head is connected through the input port of controlled connecting pipe with supplementary pump head, the delivery outlet of supplementary pump head is connected through the input port of controlled connecting pipe with the independent pump head of second. The volute output port of the independent turbine fan is smaller than the volute output port of the auxiliary pump head, and the input port of the auxiliary pump head is provided with a flange plate used for being connected with a controlled connecting pipe. The coaxial linkage rotor comprises a rotor spindle, a helical gear is arranged at the middle section of the rotor spindle, two limiting rings are fixed on the rotor spindle, the two limiting rings are located on the same side of the helical gear, and two ends of the rotor spindle are connected with an impeller.
With first independent pump head and supplementary pump head adopted the form of coaxial linkage rotor in this embodiment, and supplementary pump head can select the concrete form of connecting the wind path according to the operating mode demand, consequently can realize different negative pressure operating modes under the little circumstances of power conditioning change, specifically do: the negative pressure value can be formed by connecting auxiliary pump head and first independent pump head, and the independent pump head of second and auxiliary pump head are connected and also can be formed a negative pressure value, and first independent pump head and the independent pump head of second then can provide different negative pressure values alone, and first independent pump head, the independent pump head of second and auxiliary pump head series connection each other can form a negative pressure operating mode again, just, with this department before the application still a great difference point just lie in, the rotor of the independent pump head of second and the drive ratio of master gear are less than or equal to the drive ratio of coaxial linkage rotor and master gear for the negative pressure value of the independent pump head of first and second is different, consequently, through the connected mode of adjusting the connection wind path, can realize the multistage adjustment, enlarged the range of application, improved the application use of this application in the papermaking trade.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (6)
1. A multistage turbofan for papermaking, characterized in that: comprises a driving shaft driven by a motor, a main gear, a gear box, a first independent pump head, a second independent pump head and an auxiliary pump head which is selectively connected with an air path according to the working condition requirement, the main gear is arranged in the gear box, the center of the main gear is in transmission connection with the driving shaft, the first independent pump head and the second independent pump head are independent turbo fans with inlet pipes, the inlet ports of the first independent pump head and the auxiliary pump head face back to each other, the rotor of the first independent pump head and the rotor of the auxiliary pump head are coaxial linkage rotors, the middle section of the coaxial linkage rotor is in transmission connection with the first side of the main gear, and the rotor of the second independent pump head is in transmission connection with the second side of the main gear, and the transmission ratio of the rotor of the second independent pump head to the main gear is smaller than or equal to that of the coaxially linked rotor and the main gear.
2. The multi-stage turbo fan for papermaking according to claim 1, wherein: the drive shaft and the main gear are in meshed helical gear transmission, the drive shaft is perpendicular to the main gear, the coaxial linkage rotor and the main gear are in meshed helical gear transmission, the coaxial linkage rotor is perpendicular to the main gear, the rotor of the second independent pump head is in meshed helical gear transmission with the main gear, the rotor of the second independent pump head is perpendicular to the main gear, and the coaxial linkage rotor and the rotor of the second independent pump head rotate in the same direction.
3. The multi-stage turbo fan for papermaking according to claim 1, wherein: the delivery outlet of first independent pump head is connected through the input port of controlled connecting pipe with supplementary pump head, the delivery outlet of supplementary pump head is connected through the input port of controlled connecting pipe with the independent pump head of second.
4. The multistage turbofan for papermaking according to claim 1, 2 or 3, wherein: first independent pump head, first independent pump head and supplementary pump head all dispose spiral case, impeller and rotor, and all rotors all mesh with the master gear, and all impellers are driven by the rotor that corresponds, impeller and rotor all with the spiral case phase-match, independent turbofan's spiral case delivery outlet is less than the spiral case delivery outlet of supplementary pump head, the input port of supplementary pump head disposes the ring flange that is used for connecting controlled connecting pipe.
5. The multistage turbofan for papermaking according to claim 1, 2 or 3, wherein: the coaxial linkage rotor comprises a rotor spindle, a helical gear is arranged at the middle section of the rotor spindle, two limiting rings are fixed on the rotor spindle, the two limiting rings are located on the same side of the helical gear, and two ends of the rotor spindle are connected with an impeller.
6. The multi-stage turbo fan for papermaking according to claim 5, wherein: the diameter of the main gear is at least 5 times of the diameter of the transmission gear on the rotor of the second independent pump head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020521976.4U CN212225573U (en) | 2020-04-10 | 2020-04-10 | Multistage turbine fan for papermaking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020521976.4U CN212225573U (en) | 2020-04-10 | 2020-04-10 | Multistage turbine fan for papermaking |
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| CN212225573U true CN212225573U (en) | 2020-12-25 |
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| CN202020521976.4U Active CN212225573U (en) | 2020-04-10 | 2020-04-10 | Multistage turbine fan for papermaking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425424A (en) * | 2020-04-10 | 2020-07-17 | 杭州四鑫工业泵制造有限公司 | Multistage turbine fan for papermaking and control method thereof |
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- 2020-04-10 CN CN202020521976.4U patent/CN212225573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425424A (en) * | 2020-04-10 | 2020-07-17 | 杭州四鑫工业泵制造有限公司 | Multistage turbine fan for papermaking and control method thereof |
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