CN204851644U - Deformable vacuum pump blade of tip and vacuum pump - Google Patents
Deformable vacuum pump blade of tip and vacuum pump Download PDFInfo
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- CN204851644U CN204851644U CN201520541385.2U CN201520541385U CN204851644U CN 204851644 U CN204851644 U CN 204851644U CN 201520541385 U CN201520541385 U CN 201520541385U CN 204851644 U CN204851644 U CN 204851644U
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- vacuum pump
- blade
- deformable
- shaped tip
- hook shaped
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Abstract
The utility model discloses a deformable vacuum pump blade of tip, include: including blade body and hook tip, be equipped with the hook tip at the width direction of blade body. The utility model discloses a blade body is firm and the precision is high, terminal wear -resisting, the blade sealed effectual, the operation is stable and easily make and low cost.
Description
Technical field
The utility model relates to a kind of for the blade in vacuum pump, particularly but be not limited to be used in automobile application on.The utility model relates to the vacuum pump with this blade.
Background technique
Vacuum pump application, in service braking sytem system, uses rotating vane vacuum pump to provide negative pressure of vacuum for vacuum booster.When the rotor rotates, blade rotates along with rotor and passes rotor to keep fitting with shell body wall on its every one end, and the slot between blade and wall is sealed by oil film.Upon the rotation of the blade, produce vacuum, make gas enter in chamber by entrance, then this gas is discharged by outlet when blade rotary.
Mostly existing blade is combined type, and the blade terminals of the blade body and two band latches that can hold terminal latch by forms.In running, terminal relies on centrifugal force to be close to vacuum pump inner walls, completes sealing.In vacuum pump running, terminal can ceaselessly slide, and causes vibrations, not only wastes power, and noise is comparatively large, and sealing effect is also bad.
Chinese patent CN201827007U discloses vacuum pump and blade thereof, and its blade is made up of from one piece, and have plane central portion and curved end, wherein curved end bends toward each other.This design emphasizes that end radius of arc is concentric with rotor, the radius of arc of blade tip does not change at movement process, i.e. the main precision relying on product of its sealing, and this is very high to the technological requirement of product, be not suitable for industrial mass production, and once wearing and tearing can affect the working efficiency of vacuum pump greatly.
Summary of the invention
Model utility object: in order to overcome above deficiency, the purpose of this utility model is to provide that a kind of body is firm and precision is high, end is wear-resisting and be easy to manufacture and blade with low cost and have the vacuum pump of this blade.
Technological scheme: the utility model discloses the deformable vacuum pump vanes in a kind of end, comprise body and hook shaped tip, be provided with hook shaped tip at the width direction of described blade body.Described configuration end has certain elasticity, deformable.Described blade and vacuum pump inner walls adopt Spielpassung at width direction, even if blade and vacuum pump inner walls have gap or wear and tear that to produce gap less like this.When vacuum pump works, because of the pressure difference on blade both sides, blade tip can be caused to be out of shape, to make blade tip be close to vacuum pump inwall, complete sealing.And because variability end and blade body are one, product can not shake in running, improves the stability of blade working.In addition, the body width end of blade adopts hook shaped tip design, and required material is few, and fabricating cost is low, and in addition, this design also reduces the weight of blade, thus reduces inertia torque, decreases power consumpiton.
The deformable vacuum pump vanes in above-mentioned end, the hook extreme direction of described hook shaped tip is contrary.The hook extreme direction of the utility model hook shaped tip is contrary, and make blade when rotated, in interior lining ring, gas pressure is consistent with the deformation direction of hook shaped tip, is namely clockwise or counterclockwise, more meets aerodynamic principle, sealing can be made tightr.
Improve as one of the present utility model, in the deformable vacuum pump vanes in above-mentioned end, blade body comprises inserts and shell composition.The utility model kind body is made up of inserts and shell, selects different materials as required, meet this body high strength and high-precision requirement simultaneously, overcome the shortcoming that homogenous material cannot meet the demands simultaneously for inserts and shell.
The deformable vacuum pump vanes in above-mentioned end, described blade insert selects the high-strength materials such as steel, aluminium material or polymer composite, improves product strength.The thermal expansion coefficient of inserts is all close with vacuum pump case material with blade shell, so just can ensure that blade can not crack because of expanding with heat and contract with cold of inserts, also ensures that the gap change of blade at different temperature and between vacuum pump housing is little simultaneously.And wrap up wear-resisting thermoplastic or thermosetting plastics at shell and hook shaped tip, because its plastic layer is thin, injection moulding contour projector is less, substantially increases the precision of body.These parts linked together by the method for molding and forming, allow its once-through and the blade shape error produced is very little, precision is high.After injection moulding, do not need to carry out machining again.When mass production, inserts is processed in advance except first meets need of production, and other both periods carry out simultaneously, substantially reduce generating period.This hook shaped tip designs for elastic ends simultaneously, and sealing can be made tightr.With injection molding forming method, these parts are combined, allow its once-through, reduce cost of production.
The vacuum pump that the utility model provides comprises vacuum pump vanes, and this vacuum pump vanes has above-mentioned technique effect, and the vacuum pump comprising this vacuum pump vanes also should have identical technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the deformable vacuum pump vanes in end described in the utility model;
Fig. 2 is the structural representation of the deformable vacuum pump vanes in end of improvement described in the utility model;
Fig. 3 is the structural representation of vacuum pump described in the utility model;
Fig. 4 is the working method schematic diagram of the deformable vacuum pump vanes in end described in the utility model.
In figure: 1 body, 11 shells, 12 inserts, 2 hook shaped tip, 3 rotors, 4 vacuum pumps.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further.
The deformable vacuum pump vanes in end as shown in Figure 1, comprises body 1 and hook shaped tip 2, is provided with hook shaped tip 2 at the width direction of described blade body 1.
The deformable vacuum pump vanes in above-mentioned end, the hook extreme direction of described hook shaped tip 2 is contrary.
As shown in Figure 2, in the deformable vacuum pump vanes in above-mentioned end, blade body 1 comprises shell 11 and inserts 12 forms.
The deformable vacuum pump vanes in above-mentioned end, described shell 11 and hook shaped tip 2 are that thermoplastic or thermosetting plastics are made, this material has very high tear strength, lower friction factor, and this material can keep stable at-40 DEG C to 170 DEG C.Described inserts 12 is obtained by high-strength material formed by machining, casting or other forming methods, and this material has very high mechanicalness and power character carrying and oil resistance and very stable.Described shell 11 and inserts 12 have close thermal expansion coefficient.By the method for molding and forming, shell 11 and inserts 12 are combined into one.
Embodiment 1
Blade as shown in Figure 1, other structures of the present utility model are as above-mentioned, and wherein body 1 and hook shaped tip 2 form for polyphenylene sulfide-carbon fibre material molding and forming.As shown in Figure 3, by blades installation in rotor 3.During work, rotor banding moving vane rotates in vacuum pump, and hook shaped tip 2 keeps drive fit with lining ring in vacuum pump 4, and the slot between blade and interior lining ring wall is sealed by oil.Upon the rotation of the blade, as shown in Figure 4, hook shaped tip 2 is along with the certain resiliently deformable of rotation generation, make hook shaped tip 2 be close to lining ring wall in vacuum pump further, blade body 1 stablizes to-and-fro motion along blade body 1 length direction in rotor 3 makes hook shaped tip 2 compress lining ring wall in vacuum pump 4 further.Along with blade rotary, produce vacuum, make gas enter in chamber by entrance, then this gas is discharged by outlet when blade rotary.
Embodiment 2
Blade as shown in Figure 2, other structures of the present utility model are as above-mentioned, and its housing 11 and hook shaped tip 2 are polyphenylene sulfide-fiber glass material, and blade insert 12 is steel material.By blades installation in rotor 3.During work, rotor banding moving vane rotates in vacuum pump 4, and hook shaped tip 2 keeps drive fit with lining ring in vacuum pump 4, and the slot between blade and interior lining ring wall is sealed by oil.Upon the rotation of the blade, hook shaped tip 2 is along with the certain resiliently deformable of rotation generation, make hook shaped tip 2 be close to lining ring wall in vacuum pump further, blade body 13 is stablized to-and-fro motion along blade body 1 length direction and is made hook shaped tip 2 compress lining ring wall in vacuum pump further in rotor.Along with blade rotary, produce vacuum, make gas enter in chamber by entrance, then this gas is discharged by outlet when blade rotary.
Embodiment 3
Other structures of the present utility model are as above-mentioned, and other structures of the present utility model are as above-mentioned, and its housing 11 and hook shaped tip 2 are polyether-ether-ketone-carbon fibre material, and blade insert 12 is fiberglass composite plate.By the method for molding and forming, shell 11 and inserts 12 are combined into one, by blades installation in rotor.All the other are with embodiment 2.
The vacuum pump that the utility model provides comprises vacuum pump vanes, this vacuum pump vanes is the vacuum pump vanes described in above-mentioned either a program, because this vacuum pump vanes has above-mentioned technique effect, the vacuum pump comprising this vacuum pump vanes also should have identical technique effect.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.
Claims (5)
1. the deformable vacuum pump vanes in end, is characterized in that: comprise body (1) and hook shaped tip (2), be provided with hook shaped tip (2) at the width direction of described blade body (1).
2. the deformable vacuum pump vanes in end according to claim 1, is characterized in that: the hook extreme direction of described hook shaped tip (2) is contrary.
3. the deformable vacuum pump vanes in end according to claim 1, is characterized in that: described blade body (1) comprises shell (11) and inserts (12) composition.
4. the deformable vacuum pump vanes in end according to claim 3, it is characterized in that: described shell (11) and hook shaped tip (2) are that thermoplastic or thermosetting plastics are made, described inserts (12) is made up of high-strength material, combined by these parts with injection molding forming method.
5. a vacuum pump, comprises vacuum pump vanes, it is characterized in that, described vacuum pump vanes is the vacuum pump vanes described in any one of claim 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520541385.2U CN204851644U (en) | 2015-07-24 | 2015-07-24 | Deformable vacuum pump blade of tip and vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520541385.2U CN204851644U (en) | 2015-07-24 | 2015-07-24 | Deformable vacuum pump blade of tip and vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851644U true CN204851644U (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520541385.2U Active CN204851644U (en) | 2015-07-24 | 2015-07-24 | Deformable vacuum pump blade of tip and vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020141A (en) * | 2015-07-24 | 2015-11-04 | 裕克施乐塑料制品（太仓）有限公司 | Vacuum pump blade with deformable ends and vacuum pump |
-
2015
- 2015-07-24 CN CN201520541385.2U patent/CN204851644U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020141A (en) * | 2015-07-24 | 2015-11-04 | 裕克施乐塑料制品（太仓）有限公司 | Vacuum pump blade with deformable ends and vacuum pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |