CN203702589U - Fan for hollow shaft - Google Patents
Fan for hollow shaft Download PDFInfo
- Publication number
- CN203702589U CN203702589U CN201420095707.0U CN201420095707U CN203702589U CN 203702589 U CN203702589 U CN 203702589U CN 201420095707 U CN201420095707 U CN 201420095707U CN 203702589 U CN203702589 U CN 203702589U
- Authority
- CN
- China
- Prior art keywords
- fan
- shaft
- hollow shaft
- shell
- guard shield
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a fan for a hollow shaft. The fan comprises a fan shell, a fan shaft and fan blades; the fan shell is a hollow cylinder; the fan shell is mounted in a shaft hole of the hollow shaft and rotates along with the hollow shaft; the fan shaft is a cylinder; the fan blades are plate-like, the two ends of each fan blade are fixedly connected with the inner wall of the fan shell and the outer wall of the fan shaft, and the axis of the fan shaft coincides with the central line of the fan shell. The fan is mounted on the hollow shaft and driven by the hollow shaft to achieve the goals of sucking air or blowing air; no extra operating shaft is needed, and lubrication, maintenance and the like of a special shaft for a traditional fan are omitted; the fan is simple in structure, and convenient to produce and mount.
Description
Technical field
The utility model relates to fan art, particularly a kind of fan for hollow shaft.
Background technique
Existing fan generally has two kinds of induced draught fan and fan blowings, existing two kinds of fans are all made up of three parts such as motor, flabellum, guard shields at present, specifically realize air draught or exhausting function by flabellum being assembled on the axle of motor, between flabellum and guard shield, be gapped, guard shield and motor body are relative fixing with flabellum running for motor shaft in the course of the work.
But existing fan will be realized air draught or air suction function all to be needed the blades installation of fan independently above running shaft, running shaft needs extra support, such as motor, and needs lubricated and safeguards.
Model utility content
The utility model is in order to overcome defect in above-mentioned prior art, and a kind of fan for hollow shaft is provided, and does not need extra operating shaft, has reduced the problems such as lubricated, maintenance to conventional fan special axis, simple in structure, produces with easy for installation.
For achieving the above object, the utility model provides a kind of fan for hollow shaft, comprising: fan shell, and it be hollow cylinder, this fan shell is used for being installed on that the axis hole of hollow shaft is interior rotates with hollow shaft; Fan shaft, it is cylindrical body; Flabellum, it is tabular, the two ends of flabellum are fixedly connected with the fan inwall of shell and the outer wall of fan shaft respectively, and the axis of fan shaft overlaps with the center line of fan shell.
In technique scheme, also comprise guard shield, it is circular shell, and fan shell is located in guard shield, the axis hole interference fit of the outer wall of guard shield and hollow shaft.
In technique scheme, the length of fan shaft is less than the length of fanning shell, and the length of fan shell is less than the length of guard shield.
In technique scheme, fan shell, fan shaft and flabellum adopt engineering plastics integrated injection molding.
In technique scheme, guard shield adopts metal material processing to form.
In technique scheme, the number of flabellum is 5-8, and is evenly arranged on the outer wall of fan shaft.
Compared with prior art, the utlity model has following beneficial effect: by flabellum, fan shell and fan shaft are designed to overall structure, this fan is realized object air-breathing or that blow afloat by being installed on hollow shaft and by the drive of hollow shaft, do not need extra operating shaft, the problems such as lubricated, maintenance to conventional fan special axis are reduced, simple in structure, produce with easy for installation.
Accompanying drawing explanation
Fig. 1 is the plan view of the fan for hollow shaft of the present utility model;
Fig. 2 is the complete section left view of the fan for hollow shaft of the present utility model;
Fig. 3 is the axial view of the fan for hollow shaft of the present utility model;
Fig. 4 is the cross-sectional schematic of the fan for hollow shaft of the present utility model;
Fig. 5 is the schematic diagram that the fan for hollow shaft of the present utility model is installed on camshaft.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-fan shaft, 2-flabellum, 3-fans shell, 4-guard shield.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.
Fan for hollow shaft of the present utility model has departed from traditional fan design thinking, has omitted and has driven the operating shaft of flabellum rotation, but by as a whole fan design structure is arranged in the axis hole of hollow shaft, do not needed extra operating shaft.Meanwhile, the series of problems such as lubricated, maintenance to conventional fan special axis have been reduced.
As shown in Figures 1 to 4, the fan for hollow shaft of the present utility model comprises fan shell 3, fan shaft 1 and flabellum 2, and fan shell 3 be hollow cylinder, and it is used for being installed on, and the axis hole of hollow shaft is interior rotates with hollow shaft.Fan shaft 1 is cylindrical body, flabellum 2 is tabular, there is certain thickness (referring to Fig. 2 or Fig. 4), the two ends of flabellum are fixedly connected with the fan inwall of shell 3 and the outer wall of fan shaft 1 respectively, and the axis of fan shaft 1 overlaps with the center line of fan shell 3, the number of flabellum is 5-8, and is evenly arranged on the outer wall of described fan shaft, and the present embodiment is illustrated take 8 as example.As a kind of preferred embodiment, can also design guard shield 4 at fan shell 3 outer walls, it is circular shell, between fan shell 3 and guard shield 4, closely cooperates, the axis hole interference fit of the outer wall of guard shield 4 and hollow shaft.Fan shaft 1, flabellum 2 and fan shell 3 all adopt engineering-plastics integral moulding, and such as integrated injection molding, after moulding, three is integrated.Guard shield 4 adopts stainless steel or other high strength and on-deformable metal material processing to form, and fan shell 3 is relative with guard shield 4 fixing, and fan shaft 1, flabellum 2, fan shell 3, guard shield 4 just form an entirety like this, all relatively fixing between four.This fan after machine shaping, the internal diameter of fan shell 3 is identical with the external diameter that flabellum 2 is contained in the circle forming on fan shaft 1, and the internal diameter of guard shield 4 is identical with the external diameter of fan shell 3, and the external diameter of guard shield 4 is identical with the shaft hole diameter of the hollow shaft that need to install.
The fan that the present embodiment provides and hollow shaft adopt the mode of interference fit to install, specifically use the axis hole that external force is compressed into fan hollow shaft, as long as be arranged on after hollow shaft, along with the running of hollow shaft just can realize the function of fan, in order to prevent in installation process, damage engineering plastic materials and parts by pressure, be specially provided with guard shield 4, guard shield 4 adopts the metal manufactures such as stainless steel, has very strong non-deformability.Simultaneously, the length L 1 of design fan shaft 1 is less than the length L 3 of fanning shell 3, the length L 4(that the length L 3 of fan shell 3 is less than guard shield 4 is referring to Fig. 2), so just can effectively prevent from being pressed onto in installation process fan shaft 1, flabellum 2, fan shell 3, cause that structure of the present utility model is destroyed, from designing, well solved installation question.
As shown in Figure 5, the fan that the present embodiment provides can be for camshaft 10, be convenient to explanation, in accompanying drawing 5, this fan is labeled as 30, camshaft gear wheel 20 is installed in one end at camshaft 10, in the axle journal of camshaft gear wheel 20 ends, is provided with axis hole, and fan 30 is arranged in axis hole in the manner described above, like this, fan 30 is realized the function of fan along with the rotation of camshaft.By changing the angle of inclination of flabellum 2, specifically make a kind of drawing fan, this fan is during for this hollow camshaft, produces with the gas mixture of crankcase and can enter by this fan in the axis hole of camshaft 10 and carry out Oil-gas Separation.Concrete principle is; first the gas mixture producing in engine working process and machine oil steam pass through drawing fan under the effect of drawing fan; now; part mixture can contact with the blade of drawing fan; machine oil particle in gas can be adsorbed on blade and under the effect of centrifugal force and be taken the lead in separating; realize initial gross separation, the machine oil particle of separating can directly flow back in oil sump along the end face of drawing fan and camshaft gear wheel 20.Immediately, gas mixture enters axis hole and turns round together with camshaft 10, is separated in the effect of centrifugal force, and the machine oil particle of separating will be adsorbed on the inwall of axis hole, axis hole draining hole (not shown) is radially set, machine oil can throw away from draining hole under the effect of centrifugal force.Gas mixture is passing through after said process, realize separating of machine oil particle and gas, the gas of after separating will flow out at the end of axis hole (being the other end of camshaft), and the waste gas of outflow can be drawn motor by motor the gas after separating with the passage of atmosphere.
Disclosed is above only specific embodiment of the utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (6)
1. for a fan for hollow shaft, it is characterized in that, comprising:
Fan shell, it be hollow cylinder, this fan shell is used for being installed on that the axis hole of described hollow shaft is interior rotates with described hollow shaft;
Fan shaft, it is cylindrical body;
Flabellum, it is tabular, the two ends of described flabellum are fixedly connected with the inwall of described fan shell and the outer wall of described fan shaft respectively, and the axis of described fan shaft overlaps with the center line of described fan shell.
2. the fan for hollow shaft according to claim 1, is characterized in that, this fan also comprises guard shield, and it is circular shell, and described fan shell is located in described guard shield, the axis hole interference fit of the outer wall of described guard shield and described hollow shaft.
3. the fan for hollow shaft according to claim 2, is characterized in that, the length of described fan shaft is less than the length of described fan shell, and the length of described fan shell is less than the length of described guard shield.
4. the fan for hollow shaft according to claim 1, is characterized in that, described fan shell, described fan shaft and described flabellum adopt engineering plastics integrated injection molding.
5. the fan for hollow shaft according to claim 2, is characterized in that, described guard shield adopts metal material processing to form.
6. according to the fan for hollow shaft described in claim 1 to 5 any one, it is characterized in that, the number of described flabellum is 5-8, and is evenly arranged on the outer wall of described fan shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095707.0U CN203702589U (en) | 2014-03-04 | 2014-03-04 | Fan for hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420095707.0U CN203702589U (en) | 2014-03-04 | 2014-03-04 | Fan for hollow shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702589U true CN203702589U (en) | 2014-07-09 |
Family
ID=51053040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420095707.0U Expired - Fee Related CN203702589U (en) | 2014-03-04 | 2014-03-04 | Fan for hollow shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702589U (en) |
-
2014
- 2014-03-04 CN CN201420095707.0U patent/CN203702589U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20200304 |