CN110219811B - Double-volute centrifugal fan - Google Patents
Double-volute centrifugal fan Download PDFInfo
- Publication number
- CN110219811B CN110219811B CN201910503563.5A CN201910503563A CN110219811B CN 110219811 B CN110219811 B CN 110219811B CN 201910503563 A CN201910503563 A CN 201910503563A CN 110219811 B CN110219811 B CN 110219811B
- Authority
- CN
- China
- Prior art keywords
- volute
- front side
- plate
- centrifugal fan
- blade
- 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.)
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Links
- 238000004140 cleaning Methods 0.000 claims abstract description 39
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims description 7
- 241000510097 Megalonaias nervosa Species 0.000 abstract 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal 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
- F04D29/40—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
- F04D29/60—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
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M3/00—Portable or wheeled frames or beds, e.g. for emergency power-supply aggregates, compressor sets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a double-volute centrifugal fan, which comprises an outer volute and a hub, wherein a bottom plate is welded on the lower surface of the outer volute, a movable plate is arranged below the bottom plate, universal wheels are arranged on the left side and the right side below the movable plate, an inner volute is arranged on the inner side of the outer volute, a motor is arranged on a rivet above the flat plate, the hub is arranged on the front side of a rotating shaft, blades are arranged on the outer side of the hub at equal angles, an air inlet formed in the front end of the outer volute is formed in the front side of each blade, a protective cover is arranged on the front side of each air inlet, an operating rod is welded on the front side of each protective cover, and a rear cavity cleaning plate is arranged above the motor. This double-volute centrifugal fan makes things convenient for the staff to carry, alleviates staff's intensity of labour, makes things convenient for the dismantlement of outer spiral case and protection casing and back chamber wash board, through taking off protection casing and back chamber wash board from outer spiral case, makes things convenient for the front and back side of cleaning blade.
Description
Technical Field
The invention relates to the technical field of double-volute centrifugal fans, in particular to a double-volute centrifugal fan.
Background
The practicality of double-volute centrifugal fan is stronger, is widely used in industrial machinery field, can design different centrifugal fans according to different environment, and inside outer spiral case and the interior spiral case of double-volute centrifugal fan can be with the gas collection that leaves the impeller and play the effect of water conservancy diversion.
For example, the chinese patent of patent publication No. CN203453126U discloses a double-volute centrifugal fan for cooling system of generator, which not only ensures uniformity of outlet air flow, but also improves pressure and efficiency of the fan, and reduces noise, so that the whole fan is in a relatively stable working state, but is inconvenient for carrying by staff, and increases workload for staff, and after long-term use, more dust adheres to blades, which affects working efficiency of the double-volute centrifugal fan, so that it is necessary to periodically clean blades inside the double-volute centrifugal fan, but it is inconvenient to take down a protective cover on front side of the blades, and it is inconvenient to clean rear side of the blades, therefore, we propose a double-volute centrifugal fan, so as to solve the problems set forth in the foregoing.
Disclosure of Invention
The invention aims to provide a double-volute centrifugal fan, which solves the problems that the conventional double-volute centrifugal fan provided in the background art is inconvenient for workers to carry and inconvenient for cleaning the front side surface and the rear side surface of a blade.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a double-volute centrifugal fan, includes outer spiral case and wheel hub, the lower surface welding of outer spiral case has the bottom plate, and the inside equidistant mounting hole of seting up of bottom plate, the below of bottom plate is provided with the movable plate, and the universal wheel is all installed to the below left and right sides of movable plate to the equidistant connecting rod that is fixed with of upper surface of movable plate, the inner spiral case is installed to the inboard of outer spiral case, and the rear welding of outer spiral case has the flat board, the motor is installed to dull and stereotyped last Fang Maoding, and the output of motor is connected with the pivot, wheel hub installs the front side at the pivot, and the outside equi-angle of wheel hub is provided with the blade, the front side of blade is provided with the air intake of seting up at outer spiral case front end, and the air outlet has been seted up to the right-hand member of outer spiral case, the front side of air intake is provided with the protection casing, and the leading flank welding of protection casing has the action bars, the top of motor is provided with back chamber wash the board.
Preferably, the vertical central lines of the mounting holes are coincident with the vertical central lines of the connecting rods one by one, and the bottom plate is connected with the movable plate in a clamping manner through the connecting rods.
Preferably, the length of the blade is smaller than the diameter of the rear cavity cleaning plate, and the transverse center line of the rear cavity cleaning plate and the transverse center line of the blade are mutually overlapped.
Preferably, the diameter size of the air inlet is equal to the inner diameter size of the protective cover, and the protective cover is connected with the outer volute in a threaded mode.
Preferably, the longitudinal section of the protective cover is of an annular structure, and the outer side surface of the protective cover is welded with an operating rod at equal angles.
Preferably, the rear cavity cleaning plate is in threaded connection with the outer volute, and the longitudinal section of the rear cavity cleaning plate is of a convex structure.
Compared with the prior art, the invention has the beneficial effects that: the double-volute centrifugal fan is convenient for workers to carry, reduces labor intensity of the workers, facilitates disassembly and assembly of the outer volute, the protective cover and the rear cavity cleaning plate, and facilitates cleaning of the front side and the rear side of the blade by taking down the protective cover and the rear cavity cleaning plate from the outer volute;
1. The double-volute centrifugal fan is provided with a bottom plate, a movable plate and universal wheels, wherein the bottom plate is connected with the movable plate in a clamping way through a connecting rod, and after the bottom plate is installed on the movable plate, the double-volute centrifugal fan is conveniently moved under the action of the universal wheels, so that the double-volute centrifugal fan is convenient for workers to carry, and the labor intensity of the workers is reduced;
2. the outer side surface of the protective cover is welded with the operating rod at equal angles, the longitudinal section of the rear cavity cleaning plate is of a convex structure, after the rear cavity cleaning plate is installed on the outer volute, the outer end of the rear cavity cleaning plate is positioned at the outer side of the outer volute, and when the protective cover and the rear cavity cleaning plate are required to be taken down, the outer ends of the operating rod and the rear cavity cleaning plate are rotated, so that the outer volute, the protective cover and the rear cavity cleaning plate can be conveniently detached and installed;
3. The protective cover and the rear cavity cleaning plate are arranged, the protective cover and the rear cavity cleaning plate are in threaded connection with the outer volute, and the protective cover and the rear cavity cleaning plate are conveniently taken down from the outer volute, so that front and rear sides of the blades are conveniently cleaned from front and rear ends of the outer volute respectively.
Drawings
FIG. 1 is a schematic view of the front cut-away structure of the present invention;
FIG. 2 is a schematic side view in cross-section of the present invention;
FIG. 3 is a schematic rear view of the present invention;
Fig. 4 is a schematic diagram of the overall structure of the protective cover of the present invention.
In the figure: 1. an outer volute; 2. a bottom plate; 3. a mounting hole; 4. a moving plate; 5. a universal wheel; 6. a connecting rod; 7. an inner volute; 8. a flat plate; 9. a motor; 10. a rotating shaft; 11. a hub; 12. a blade; 13. an air inlet; 14. a protective cover; 15. an operation lever; 16. a rear cavity cleaning plate; 17. and an air outlet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the double-volute centrifugal fan comprises an outer volute 1, a bottom plate 2, a mounting hole 3, a moving plate 4, universal wheels 5, a connecting rod 6, an inner volute 7, a flat plate 8, a motor 9, a rotating shaft 10, a hub 11, blades 12, an air inlet 13, a protective cover 14, an operating rod 15, a rear cavity cleaning plate 16 and an air outlet 17, wherein the bottom plate 2 is welded on the lower surface of the outer volute 1, the mounting hole 3 is formed in the bottom plate 2 at equal intervals, the moving plate 4 is arranged below the bottom plate 2, the universal wheels 5 are arranged on the left side and the right side below the moving plate 4, the connecting rod 6 is fixed on the upper surface of the moving plate 4 at equal intervals, the inner volute 7 is arranged on the inner side of the outer volute 1, the flat plate 8 is welded on the rear of the outer volute 1, the motor 9 is arranged on a rivet above the flat plate 8, the output end of the motor 9 is connected with the rotating shaft 10, the hub 11 is arranged on the front side of the rotating shaft 10, blades 12 are arranged on the outer side of the hub 11 at equal angles, an air inlet 13 formed in the front end of the outer volute 1 is arranged on the front side of the blades 12, an air outlet 17 is formed in the right end of the outer volute 1, the diameter size of the air inlet 13 is equal to the inner diameter size of the protecting cover 14, the protecting cover 14 is connected with the outer volute 1 in a threaded manner, the air inlet rate is prevented from being blocked by the protecting cover 14, the protecting cover 14 and the outer volute 1 are convenient to detach and install, the protecting cover 14 is arranged on the front side of the air inlet 13, an operating rod 15 is welded on the front side of the protecting cover 14, the longitudinal section of the protecting cover 14 is of an annular structure, an operating rod 15 is welded on the outer side of the protecting cover 14 at equal angles, the protecting cover 14 is convenient to rotate, and a rear cavity cleaning plate 16 is arranged above the motor 9;
If the vertical center line of the mounting hole 3 coincides with the vertical center line of the connecting rod 6 in fig. 1 and 2, and the bottom plate 2 is connected with the moving plate 4 through the connecting rod 6 in a clamping way, after the bottom plate 2 is mounted on the moving plate 4, under the action of the universal wheel 5 below the moving plate 4, the double-volute centrifugal fan is convenient to carry, the rear cavity cleaning plate 16 and the outer volute 1 are connected in a threaded manner, the longitudinal section of the rear cavity cleaning plate 16 is of a convex structure, the rear cavity cleaning plate 16 and the outer volute 1 are convenient to detach and mount, the length of the blade 12 is smaller than the diameter size of the rear cavity cleaning plate 16, the transverse center line of the rear cavity cleaning plate 16 coincides with the transverse center line of the blade 12, and after the rear cavity cleaning plate 16 is taken down from the outer volute 1, the rear side surface of the blade 12 is convenient to clean.
Working principle: when the double-volute centrifugal fan is used, firstly, when the double-volute centrifugal fan is carried, the outer volute 1 is lifted, so that the mounting hole 3 below the bottom plate 2 is aligned with the connecting rod 6, the bottom plate 2 is connected with the movable plate 4 in a clamping way through the connecting rod 6, the double-volute centrifugal fan is carried by utilizing the universal wheel 5 below the movable plate 4, when the double-volute centrifugal fan works, the motor 9 is connected with an external power supply, the working principle of the motor 9 is that the technology mature in the prior art, the motor 9 drives the blades 12 to rotate through the rotating shaft 10 and the hub 11, external wind enters the inner part of the outer volute 1 through the air inlet 13, the external wind is collected through the outer volute 1 and the inner volute 7, and then flows out from the inner part of the inner volute 7 through the air outlet 17;
When the blade 12 needs to be cleaned, since the connection mode between the protection cover 14 and the rear cavity cleaning plate 16 and the outer volute 1 is threaded connection, the protection cover 14 is removed from the front side of the blade 12 by rotating the outer end of the operation rod 15 and the rear cavity cleaning plate 16 with a longitudinal section in a convex structure, the rear cavity cleaning plate 16 is taken out from the inside of the outer volute 1, and then the staff cleans the front side and the rear side of the blade 12 from the front end and the rear end of the outer volute 1 respectively, so as to complete a series of operations of the double-volute centrifugal fan.
Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (4)
1. The utility model provides a double-volute centrifugal fan, includes outer spiral case (1) and wheel hub (11), its characterized in that: the lower surface welding of outer spiral case (1) has bottom plate (2), and the inside equidistant mounting hole (3) of having seted up of bottom plate (2), the below of bottom plate (2) is provided with movable plate (4), and all installs universal wheel (5) in the below left and right sides of movable plate (4), and the upper surface equidistant connecting rod (6) that is fixed with of movable plate (4), inner volute (7) are installed to the inboard of outer spiral case (1), and the rear welding of outer spiral case (1) has dull and stereotyped (8), motor (9) are installed to the upper Fang Maoding of dull and stereotyped (8), and the output of motor (9) is connected with pivot (10), hub (11) are installed in the front side of pivot (10), and the outside equiangular setting of hub (11) has blade (12), the front side of blade (12) is provided with and sets up air intake (13) at outer spiral case (1) front end, and the right-hand member of outer spiral case (1) has seted up air outlet (17), the front side of protection casing (13) is provided with motor (14), and the front side of welding of the protection casing (14) has on the front side face of front side (16) of the front side (15) of the spiral case (14) is provided with cleaning the front side face (15);
The length of the blade (12) is smaller than the diameter of the rear cavity cleaning plate (16), and the transverse center line of the rear cavity cleaning plate (16) and the transverse center line of the blade (12) are mutually overlapped;
The rear cavity cleaning plate (16) is connected with the outer volute (1) in a threaded mode, and the longitudinal section of the rear cavity cleaning plate (16) is of a convex structure;
When the blade (12) is required to be cleaned, as the protection cover (14) and the rear cavity cleaning plate (16) are in threaded connection with the outer volute (1), the operation rod (15) is rotated and the outer end of the rear cavity cleaning plate (16) with the longitudinal section in a convex structure is taken down from the front side of the blade (12), the rear cavity cleaning plate (16) is taken out from the inner part of the outer volute (1), and then workers clean the front side and the rear side surface of the blade (12) from the front end and the rear end of the outer volute (1) respectively, so that a series of operations of the double-volute centrifugal fan are completed.
2. A twin-volute centrifugal fan according to claim 1, wherein: the vertical center lines of the mounting holes (3) are coincident with the vertical center lines of the connecting rods (6) one by one, and the bottom plate (2) is connected with the movable plate (4) in a clamping mode through the connecting rods (6).
3. A twin-volute centrifugal fan according to claim 1, wherein: the diameter size of the air inlet (13) is equal to the inner diameter size of the protective cover (14), and the protective cover (14) is connected with the outer volute (1) in a threaded mode.
4. A twin-volute centrifugal fan according to claim 1, wherein: the longitudinal section of the protective cover (14) is of an annular structure, and an operating rod (15) is welded on the outer side surface of the protective cover (14) at equal angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503563.5A CN110219811B (en) | 2019-06-12 | 2019-06-12 | Double-volute centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503563.5A CN110219811B (en) | 2019-06-12 | 2019-06-12 | Double-volute centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110219811A CN110219811A (en) | 2019-09-10 |
| CN110219811B true CN110219811B (en) | 2024-06-07 |
Family
ID=67816601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910503563.5A Active CN110219811B (en) | 2019-06-12 | 2019-06-12 | Double-volute centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219811B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003206896A (en) * | 2002-01-16 | 2003-07-25 | Toshiba Tec Corp | Motor-driven blower and electric cleaner |
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|---|---|---|---|---|
| US9926935B2 (en) * | 2015-04-10 | 2018-03-27 | Arris Enterprises Llc | Fan assembly and associated systems |
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- 2019-06-12 CN CN201910503563.5A patent/CN110219811B/en active Active
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| CN110219811A (en) | 2019-09-10 |
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