CN108799161A - Circular centrifugal wind turbine in a kind of plug-in type for high temperature - Google Patents
Circular centrifugal wind turbine in a kind of plug-in type for high temperature Download PDFInfo
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- CN108799161A CN108799161A CN201810779302.1A CN201810779302A CN108799161A CN 108799161 A CN108799161 A CN 108799161A CN 201810779302 A CN201810779302 A CN 201810779302A CN 108799161 A CN108799161 A CN 108799161A
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- Prior art keywords
- motor
- wind turbine
- high temperature
- plug
- insulating layer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides circular centrifugal wind turbines in a kind of plug-in type for high temperature, belong to the technical field of Fan Equipment.Circular centrifugal wind turbine includes volute of blower, insulating layer fixed frame, motor mounting flange, thermal insulation material, motor and impeller in a kind of plug-in type for high temperature;Thermal insulation material by being arranged in the fixed part and movable part of combination and being filled in insulating layer fixed frame by the present invention, the conduction of heat is effectively blocked, to improve heat insulation, solve furnace body surface, wind turbine and the excessively high problem of furnace body surface junction temperature, and volute of blower and motor mounting flange are respectively arranged to the both sides of insulating layer fixed frame, motor is fixed on motor mounting flange, and the shaft of motor is extended in volute of blower after insulating layer fixed frame and is connect with impeller, realize impeller and the isostructural draw and insert-type installation of motor, dismounting can be fast implemented, solve the problems, such as that dismounting is inconvenient, conducive to the maintenance and repair in later stage.
Description
Technical field
The present invention relates to the technical field of Fan Equipment, it is specifically related to circular centrifugal in a kind of plug-in type for high temperature
Wind turbine.
Background technology
In industrial furnace, it usually needs hot-air equilibrium and exchange, the hot air circulation operation of furnace high-temperature air circulation in stove,
Due to the working environment of its high temperature so that the high temperature circulation blower fan used on industrial furnace it is more demanding.
Since the industrial furnace of high temperature needs certain wind pressure and air quantity to heat workpiece, wind turbine is needed in height
It works in the environment of temperature and ensures wind pressure.Traditional, it is certain to provide that the insertion volute casing centrifugal blower fan of high temperature is installed on industrial furnace
Wind pressure, still, under the small equal space restrictive condition in space in some furnace bodies, after mounting, dismounting pole is or not this wind turbine
It is convenient, in the case where breaking down in the later stage, difficulty is caused with maintenance process to safeguarding.And current this wind turbine makes
With temperature generally at 500 DEG C hereinafter, insulating layer generally use metal shell wraps heat-preservation cotton, but this heat-insulated mode is held
It easily leads to furnace heat to conduct to furnace body surface by metal shell, furnace body surface temperature and wind turbine is caused to be connect with furnace body surface
Locate the excessively high problem of temperature.
In conclusion the wind turbine that industrial furnace on the market uses at present exists, dismounting is inconvenient and heat insulation is poor asks
Topic.
Invention content
For the above-mentioned problems in the prior art, it is now intended to provide circular centrifugal in a kind of plug-in type for high temperature
Wind turbine, can be quick when breaking down dynamic structure and shell are carried out whole separation and using assembling in a manner of pulling and pushing
The dismounting for realizing dynamic structure solves the problems, such as that dismounting is inconvenient, meanwhile, the insulating layer that thermal insulation material is filled by setting is fixed
Frame has effectively blocked the conduction of heat, to improve heat insulation, prevents furnace body surface, wind turbine and furnace body surface from connecting
Locate the excessively high problem of temperature.
Specific technical solution is as follows:
Circular centrifugal wind turbine, has the feature that in a kind of plug-in type for high temperature, including:Dynamic structure and shell
Body, wherein
Shell includes volute of blower, insulating layer fixed frame and motor mounting flange, is filled in insulating layer fixed frame
There are thermal insulation material, the both sides of insulating layer fixed frame to be respectively arranged with volute of blower and motor mounting flange;
Dynamic structure includes motor and impeller, and motor is fixed on motor mounting flange, and the shaft of motor passes through heat preservation
It is extended in volute of blower after layer fixed frame, impeller is set in volute of blower and is fixed in shaft.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein solid away from insulating layer on volute of blower
The side for determining frame is provided with air inlet, and air inlet flange is provided on air inlet.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein motor is water-cooled machine.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein insulating layer fixed frame is in cage knot
Structure setting, including spiral case side flange, motor side flange and connecting tube, spiral case side flange and motor side flange coaxial and interval cloth
It sets, and is evenly equipped with several connecting tubes between spiral case side flange and motor side flange, connecting tube is along spiral case side flange or motor side
Flange axial arranged is simultaneously fixedly connected with the two.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein motor side flange and spiral case side flange
Internal diameter it is consistent, the outer diameter of motor side flange is more than the outer diameter of spiral case side flange.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein on motor side flange and be located at outer diameter
Side circular array offer several furnace wall connecting holes, the side circular array of internal diameter offers several motor fixations
Blue connecting hole.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein connecting tube is hollow steel pipe.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein thermal insulation material is divided into fixed part and work
Dynamic portion, it is high cylinder that fixed part, which is set to by the length at bottom, connecting tube of the internal diameter of spiral case side flange and the annulus of outer diameter formation,
In type space, connecting tube is embedded in fixed part, and movable part is set to using the internal diameter of spiral case side flange as bottom, the length of connecting tube
For in high cylindrical space.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein movable part is inserted in fixed part, electricity
The shaft of machine runs through movable part.
Circular centrifugal wind turbine in a kind of above-mentioned plug-in type for high temperature, wherein between air inlet and air inlet flange
It is provided with sealing ring, sealing ring, and the material of sealing ring and guarantor are again provided between volute of blower and insulating layer fixed frame
The material identical of adiabator.
The good effect of above-mentioned technical proposal is:
Circular centrifugal wind turbine in the above-mentioned plug-in type for high temperature, by by the work of motor, impeller and thermal insulation material
Dynamic portion's group is integral, and volute of blower, the fixed part of insulating layer fixed frame and insulating layer and air inlet flange are formed
Another entirety, two whole uses pull and push mode and are assembled, when breaking down, can fast implement dismounting, solve dismounting not
Just the problem of, is conducive to the maintenance and repair in later stage, meanwhile, fill thermal insulating material by the way that the insulating layer fixed frame of cage is arranged
Material, and connecting tube uses hollow steel pipe, not only increases structural strength, also reduces heat bridge, effectively blocked the conduction of heat,
To improve heat insulation, solve the problems, such as that furnace body surface, wind turbine and furnace body surface junction temperature are excessively high.
Description of the drawings
Fig. 1 is the structure chart of the embodiment of circular centrifugal wind turbine in a kind of plug-in type for high temperature of the present invention;
Fig. 2 is a preferred embodiment of the present invention the structure chart after removing thermal insulation material;
Fig. 3 is a preferred embodiment of the present invention the structure chart of insulating layer fixed frame;
Fig. 4 is a preferred embodiment of the present invention motor, motor connecting flange and the fixed structure chart of impeller.
In attached drawing:1, volute of blower;2, insulating layer fixed frame;21, spiral case side flange;22, motor side flange;23, even
It takes over;221, furnace wall connecting hole;222, motor mounting flange connecting hole;3, motor mounting flange;4, thermal insulation material;41, fixed
Portion;42, movable part;5, motor;6, impeller;7, air inlet flange.
Specific implementation mode
It is real below in order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand
It applies example combination attached drawing 1 to be specifically addressed technical solution provided by the invention to attached drawing 4, but the following contents is not as the present invention's
It limits.
Fig. 1 is the structure chart of the embodiment of circular centrifugal wind turbine in a kind of plug-in type for high temperature of the present invention.Such as Fig. 1
Shown, circular centrifugal wind turbine includes in the plug-in type provided in this embodiment for high temperature:It shell and is set to dynamic on shell
Power structure, shell include volute of blower 1, insulating layer fixed frame 2 and motor mounting flange 3, are filled out in insulating layer fixed frame 2
Filled with thermal insulation material 4, volute of blower 1 and motor mounting flange 3 are respectively arranged at the both sides of insulating layer fixed frame 2, ensure that
It can be thermally shielded between the two by thermal insulation material 4, prevent excessive heat conduction from being damaged to motor 5, meanwhile, dynamic structure point
After for motor 5 and impeller 6, motor 5 is fixed on motor mounting flange 3, and the shaft of motor 5 passes through insulating layer fixed frame 2
It extends in volute of blower 1, impeller 6 is set in volute of blower 1 and is fixed in shaft, and in volute of blower 1 away from guarantor
The side of warm layer fixed frame 2 offers air inlet, and is connected with air inlet flange 7 in air inlet upper flange, be convenient for and other
Corollary equipment connects, by the rotation of the shaft of motor 5, the rotation in volute of blower 1 of impeller 6, by air from air inlet
It is discharged from the air outlet of spiral case after sucking, to realize forced-draft, meets the use demand of industrial furnace.
Specifically, Fig. 2 is a preferred embodiment of the present invention the structure chart after removing thermal insulation material;Fig. 3 is the present invention one
The structure chart of the insulating layer fixed frame of preferred embodiment.As shown in Figure 1, Figure 2 and shown in Fig. 3, insulating layer fixed frame 2 is in cylinder
Cage construction setting, insulating layer fixed frame 2 include spiral case side flange 21, motor side flange 22 and connecting tube 23, spiral case
Side flange 21 and motor side flange 22 be coaxial and arranged for interval, and is evenly equipped between spiral case side flange 21 and motor side flange 22
Several connecting tubes 23, the end face of one end of connecting tube 23 with spiral case side flange 21 close to motor side flange 22 are connect, connecting tube
End face of 23 other end with motor side flange 22 close to spiral case side flange 21 is connect, and connecting tube 23 is along spiral case side flange
21 or motor side flange 22 it is axial arranged, effectively reduce heat bridge so that the heat transfer efficiency of insulating layer fixed frame 2 declines,
The problem for avoiding causing temperature excessively high motor 5, furnace body surface, wind turbine and furnace body surface junction.
Specifically, motor side flange 22 is consistent with the internal diameter of spiral case side flange 21, the outer diameter of motor side flange 22 is more than snail
The outer diameter of shell-side flange 21;Several furnace wall connecting holes are offered on motor side flange 22 and positioned at the side circular array of outer diameter
221, the side circular array of internal diameter offers several motor mounting flange connecting holes 222.Wherein, on motor side flange 22
Furnace wall connecting hole 221 is connect with the furnace body surface of industrial furnace, and wind turbine is integrally fastened on industrial furnace, on motor side flange 22
Motor mounting flange connecting hole 222 is connect with motor mounting flange 3, realizes the fixation to motor 5, to realize to motor
5,6 isostructural installation of impeller, to ensure that the normal operation of equipment.
More specifically, the thermal insulation material 4 being embedded in insulating layer fixed frame 2 divides for fixed part 41 and movable part 42,
The fixed part 41 of thermal insulation material 4 is set to using the internal diameter of spiral case side flange 21 and the annulus of outer diameter formation as bottom, connecting tube 23
Length is in high cartridge type space, and connecting tube 23 is embedded in fixed part 41, realizes 2 exterior space of insulating layer fixed frame
It is heat-insulated;It is high circle that the movable part 42 of thermal insulation material 4, which is set to by the length at bottom, connecting tube 23 of the internal diameter of spiral case side flange 21,
In cylindrical space, and movable part 42 is inserted in fixed part 41 so that the shaft of motor 5 run through movable part 42 after with impeller 6
Connection, realizes the heat-insulated of 2 inner space of insulating layer fixed frame, effectively prevents the heat transfer of spiral case side to motor side method
On orchid 22, the problem for causing temperature excessively high motor 5, furnace body surface, wind turbine and furnace body surface junction is avoided.
More specifically, Fig. 4 is a preferred embodiment of the present invention motor, motor connecting flange and the fixed knot of impeller
Composition.As shown in Figures 1 to 4, motor 5 is fixed on motor mounting flange 3, and impeller 6 is fixed in the shaft of motor 5, in conjunction with
Above-mentioned thermal insulation material 4 divides for fixed part 41 and movable part 42, and movable part 42 is inserted in fixed part 41, realize motor 5,
Motor mounting flange 3, the shaft of motor 5, the movable part 42 of thermal insulation material 4 and impeller 6 form an overall structure, are convenient for from guarantor
It is removed on warm layer fixed frame 2, from insulating layer fixed frame 2, the fixed part 41 of thermal insulation material 4 and snail in the form of whole
Shell, air inlet flange 7 form whole from extraction, realize when breaking down, can fast implement dismounting, solve dismounting not
Just the problem of, is conducive to the maintenance and repair in later stage.
More specifically, be provided with sealing ring between the air inlet of volute of blower 1 and air inlet flange 7, volute of blower 1 with
It is again provided with sealing ring between insulating layer fixed frame 2, effectively realizes heat-insulated and sealing purpose, improves performance.
As preferred embodiment, motor 5 selects water-cooled machine, by the form of water cooling come engine base, the electricity to motor 5
Machine mounting flange 3 and insulating layer fixed frame 2 cool down, and hot biography is carried out in the case of a high temperature to solve wind turbine
It leads and causes thermal damage's problem, protection higher to extend service life in motor 5.
As preferred embodiment, connecting tube 23 is hollow steel pipe, further reduces heat bridge, blocks heat transfer, carries
High heat insulation.
As preferred embodiment, thermal insulation material 4 is flexible material, not only realizes insulation, while can also be
When being installed with furnace body, flexible crush seal effect is generated to furnace body installing port, further realizes heat-insulated and sealing.
As preferred embodiment, volute of blower 1 is made of high temperature stainless steel material, not only high temperature resistant, Er Qiejie
Structure intensity is high, is conducive to the long-time service of equipment, ensures performance.
As preferred embodiment, the material identical of the material and thermal insulation material 4 of sealing ring is same to realize flexible squeeze
Means of press seals effect further realizes heat-insulated and sealing.
Circular centrifugal wind turbine in plug-in type provided in this embodiment for high temperature, including volute of blower 1, insulating layer are fixed
Frame 2, motor mounting flange 3, thermal insulation material 4, motor 5 and impeller 6;Pass through 41 He of fixed part by thermal insulation material 4 in combination
Movable part 42 is arranged and is filled in insulating layer fixed frame 2, the conduction of heat has effectively been blocked, to improve heat-insulated effect
Fruit solves the problems, such as that furnace body surface, wind turbine and furnace body surface junction temperature are excessively high, and by volute of blower 1 and motor fixation
Orchid 3 is respectively arranged at the both sides of insulating layer fixed frame 2, and motor 5 is fixed on motor mounting flange 3, and the shaft of motor 5 is worn
It crosses after insulating layer fixed frame 2 to extend in volute of blower 1 and be connect with impeller 6, realize impeller 6 and motor 5 is isostructural
Draw and insert-type is installed, and dismounting can be fast implemented, and is solved the problems, such as that dismounting is inconvenient, is conducive to the maintenance and repair in later stage.
It these are only preferred embodiments of the present invention, be not intended to limit the implementation manners and the protection scope of the present invention, it is right
For those skilled in the art, it should can appreciate that and all be replaced with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. circular centrifugal wind turbine in a kind of plug-in type for high temperature, which is characterized in that including:Dynamic structure and shell, wherein
The shell includes volute of blower, insulating layer fixed frame and motor mounting flange, in the insulating layer fixed frame
Filled with thermal insulation material, the both sides of the insulating layer fixed frame are respectively arranged with the volute of blower and the motor fixation
It is blue;
The dynamic structure includes motor and impeller, and the motor is fixed on the motor mounting flange, and the motor
Shaft extends to after passing through the insulating layer fixed frame in the volute of blower, and the impeller is set in the volute of blower
And it is fixed in the shaft.
2. circular centrifugal wind turbine in the plug-in type according to claim 1 for high temperature, which is characterized in that the wind turbine snail
Side on shell away from the insulating layer fixed frame is provided with air inlet, and air inlet flange is provided on the air inlet.
3. circular centrifugal wind turbine in the plug-in type according to claim 1 for high temperature, which is characterized in that the motor is
Water-cooled machine.
4. circular centrifugal wind turbine in the plug-in type according to claim 1 for high temperature, which is characterized in that the insulating layer
Fixed frame is arranged in cage construction, including spiral case side flange, motor side flange and connecting tube, the spiral case side flange and institute
Motor side flange coaxial and arranged for interval are stated, and is evenly equipped with several institutes between the spiral case side flange and the motor side flange
State connecting tube, the connecting tube connects along the axial arranged of the spiral case side flange or the motor side flange and being fixed with the two
It connects.
5. circular centrifugal wind turbine in the plug-in type according to claim 4 for high temperature, which is characterized in that the motor side
Flange is consistent with the internal diameter of spiral case side flange, and the outer diameter of the motor side flange is more than the outer diameter of the spiral case side flange.
6. circular centrifugal wind turbine in the plug-in type according to claim 5 for high temperature, which is characterized in that the motor side
Several furnace wall connecting holes are offered on flange and positioned at the side circular array of outer diameter, the side circular array of internal diameter opens up
There are several motor mounting flange connecting holes.
7. circular centrifugal wind turbine in the plug-in type according to claim 4 for high temperature, which is characterized in that the connecting tube
For hollow steel pipe.
8. circular centrifugal wind turbine in the plug-in type according to claim 5 for high temperature, which is characterized in that the thermal insulating material
Material is divided into fixed part and movable part, and the fixed part is set to is with the annulus of the internal diameter of the spiral case side flange and outer diameter formation
Bottom, the connecting tube length be high cartridge type space in, the connecting tube is embedded in the fixed part, and the movable part is set
Be placed in using the internal diameter of the spiral case side flange as the length at bottom, the connecting tube is in high cylindrical space.
9. circular centrifugal wind turbine in the plug-in type according to claim 8 for high temperature, which is characterized in that the movable part
It is inserted in the fixed part, the shaft of the motor runs through the movable part.
10. circular centrifugal wind turbine in the plug-in type according to claim 2 for high temperature, which is characterized in that the air inlet
It is provided with sealing ring between mouth and the air inlet flange, is equally set between the volute of blower and the insulating layer fixed frame
It is equipped with sealing ring, and the material identical of the material of the sealing ring and the thermal insulation material.
Priority Applications (1)
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CN201810779302.1A CN108799161B (en) | 2018-07-16 | 2018-07-16 | Inserted internal circulation centrifugal fan for high temperature |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810779302.1A CN108799161B (en) | 2018-07-16 | 2018-07-16 | Inserted internal circulation centrifugal fan for high temperature |
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CN108799161A true CN108799161A (en) | 2018-11-13 |
CN108799161B CN108799161B (en) | 2023-06-13 |
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CN201810779302.1A Active CN108799161B (en) | 2018-07-16 | 2018-07-16 | Inserted internal circulation centrifugal fan for high temperature |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151869A1 (en) * | 1981-12-30 | 1983-07-14 | Vits-Maschinenbau Gmbh, 4018 Langenfeld | High-temperature blower, in particular for annealing furnaces |
CN203641046U (en) * | 2013-11-15 | 2014-06-11 | 天津尼特风机有限公司 | Volute type high-temperature-resistant centrifugal impeller fan |
CN104314847A (en) * | 2014-10-15 | 2015-01-28 | 洛阳北玻台信风机技术有限责任公司 | High-speed high-temperature fan for kiln furnace heating circulation |
DE102015008189A1 (en) * | 2014-06-30 | 2015-12-31 | Makita Corporation | Powered air blower |
CN107100868A (en) * | 2017-06-07 | 2017-08-29 | 江苏恒康机电有限公司 | Inserted high-temperature fan |
CN107605771A (en) * | 2017-10-24 | 2018-01-19 | 宝鸡市泰得工贸有限公司 | A kind of inserted high-temperature fan heat insulation and heat control mechanism |
CN207472005U (en) * | 2017-09-19 | 2018-06-08 | 东莞市旺龙机械设备有限公司 | A kind of combustion of natural gas heats automatic cycle drying oven |
-
2018
- 2018-07-16 CN CN201810779302.1A patent/CN108799161B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151869A1 (en) * | 1981-12-30 | 1983-07-14 | Vits-Maschinenbau Gmbh, 4018 Langenfeld | High-temperature blower, in particular for annealing furnaces |
CN203641046U (en) * | 2013-11-15 | 2014-06-11 | 天津尼特风机有限公司 | Volute type high-temperature-resistant centrifugal impeller fan |
DE102015008189A1 (en) * | 2014-06-30 | 2015-12-31 | Makita Corporation | Powered air blower |
CN104314847A (en) * | 2014-10-15 | 2015-01-28 | 洛阳北玻台信风机技术有限责任公司 | High-speed high-temperature fan for kiln furnace heating circulation |
CN107100868A (en) * | 2017-06-07 | 2017-08-29 | 江苏恒康机电有限公司 | Inserted high-temperature fan |
CN207472005U (en) * | 2017-09-19 | 2018-06-08 | 东莞市旺龙机械设备有限公司 | A kind of combustion of natural gas heats automatic cycle drying oven |
CN107605771A (en) * | 2017-10-24 | 2018-01-19 | 宝鸡市泰得工贸有限公司 | A kind of inserted high-temperature fan heat insulation and heat control mechanism |
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