CN204610283U - The blade structure of vacuum pump - Google Patents
The blade structure of vacuum pump Download PDFInfo
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- CN204610283U CN204610283U CN201520229416.0U CN201520229416U CN204610283U CN 204610283 U CN204610283 U CN 204610283U CN 201520229416 U CN201520229416 U CN 201520229416U CN 204610283 U CN204610283 U CN 204610283U
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Abstract
The utility model discloses a kind of rotary-vane vaccum pump, provide a kind of blade long service life, low cost of manufacture, and the blade structure that vacuum pump uses the vacuum pump of noise can be reduced, solve the blade manufacture cost existed in prior art high, running resistance is large, life-span is short, vacuum pump uses the technical problem that noise is high, it comprises the blade seat of metal material and is located at the axial pass trough at blade seat two ends, radially be slidably connected respectively blade in axial pass trough, and when the medial extremity of blade is connected to the bottom of axial pass trough, the outboard end of blade radially extends to outside axial pass trough.Blade seat wherein is radially slidably connected in the radial groove of pump rotor.
Description
Technical field
The utility model relates to a kind of rotary-vane vaccum pump, particularly relates to a kind of blade long service life, low cost of manufacture, and can reduce the blade structure that vacuum pump uses the vacuum pump of noise.
Background technique
Vacuum pump utilizes machinery, physics, the methods such as chemistry or physical chemistry produce in a certain enclosed space, improve and maintain the device of vacuum, it is widely used in medication chemistry, electronic technology, vacuum drying, the fields such as refrigeration, generally be divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump is wherein the widest as backing pump application area, account for 60% ~ 70% in vacuum equipment configuration, general by stator, rotor, blade, the part compositions such as end cap, be located at stator cavity interior and tangent with the internal surface of stator rotor eccentricity wherein, slide in rotor radial groove and two pieces of blades are set, two pieces of blades are close on stator cavity inwall by spring tension between the two and its outboard end of centrifugal force, and when the rotor rotates, the outboard end of two pieces of blades slides along the inwall of stator cavity all the time, it is large that himself structural feature determines blade running resistance, blade is easy to wear and vacuum pump uses noise high, along with the popularization and application of rotary-vane vaccum pump, it is more and more for Strong oxdiative, containing the acid or contour corrosive industry of alkalescence, the more perishable damage of Vacuum pump rotary vane conventional under high corrosive environment, the blade of this type of vacuum pump anti-rotten material that often uses price very expensive for this reason, improve manufacture cost and the user cost of vacuum pump greatly.
Summary of the invention
The utility model mainly provides a kind of blade long service life, low cost of manufacture, and the blade structure that vacuum pump uses the vacuum pump of noise can be reduced, solve the blade manufacture cost existed in prior art high, running resistance is large, the life-span is short, the technical problem that vacuum pump uses noise high.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of blade structure of vacuum pump, comprise the blade seat of metal material and be located at the axial pass trough at blade seat two ends, radially be slidably connected respectively blade in axial pass trough, and when the medial extremity of blade is connected to the bottom of axial pass trough, the outboard end of blade radially extends to outside axial pass trough.Traditional integrated rotating chip architecture is changed into split type, namely by the blade seat two ends sliding plug blade at metal material, the blade seat of metal material is slidably connected on the eccentric rotor of vacuum pump, because blade seat and rotor are all metal material, when both materials are identical or correlation coefficient is close, as on blade seat and rotor, the chute matching gap of interworking reduces, maximizing reduces rocking of blade seat thus, reduce vacuum pump and run noise, blade seat and blade can adopt different materials simultaneously, the blade seat relative low price of metal material, according to use needs, the anti-corruption that blade can use price very expensive waits special material, reduce the consumption of special blade material, and these special materials often machinability is poor, machining accuracy is difficult to ensure, scrappage is higher, after blade shortens, can significantly improve processability and yield rate, therefore significantly manufacture cost can be reduced, simultaneously because blade seat has protective action to blade, and the extrusion ratio of blade reduces, greatly improve blade stressing conditions, greatly can reduce the wearing and tearing of blade and the temperature rise of pump and noise, improve the wear resistance of blade, therefore the working life of blade can be improved.
As preferably, described blade seat is wear-resistant metal material, and blade is Erosion-Resisting Non-metallic Materials.Working state due to blade seat back and forth runs along epitrochanterian chute, therefore adopts wear-resistant metal material can extend the working life of blade seat; According to service condition requirement, blade can use the special nonmetallic material such as corrosion-resistant, to meet Strong oxdiative, use needs containing the highly corrosive industry such as acid or alkaline.
As preferably, when the medial extremity of described blade is connected to the bottom of axial pass trough, the outboard end of blade radially extends to the outer 2mm to 3mm of axial pass trough.The blade extended to outside axial pass trough keeps rational length, both can ensure that blade is in rational stress, can reduce again the material consumption of blade, reduces manufacture cost.
As preferably, the radial center face of described axial pass trough and the radial center face of blade seat coplanar.Guarantee that blade eccentricity value is accurate.
As preferably, several blade location hole of the spring are radially provided with at the medial extremity of described blade, the blade seat location hole of the spring corresponding with blade location hole of the spring is provided with in the bottom of axial pass trough, between blade location hole of the spring and blade seat location hole of the spring, be provided with blade Compress Spring, the two ends of blade Compress Spring are connected on the bottom surface of blade location hole of the spring and blade seat location hole of the spring respectively.By arranging blade Compress Spring between the medial extremity and axial pass trough of blade, being offseted with pump chamber inwall all the time by blade Compress Spring overhead blade, ensureing the sealing of pump chamber separated region.
Therefore, the blade structure of vacuum pump of the present utility model has following advantage: the cost of material of saving blade; Optimize product structure, improve the force-bearing situation of blade, reduce the noise of pump, extend the working life of blade.
Accompanying drawing illustrates:
Fig. 1 is the blade structure of vacuum pump of the present utility model;
Fig. 2 is the plan view shown in Fig. 1;
Fig. 3 is the vacuum pump pump chamber structural representation that blade shown in Fig. 1 is housed.
Embodiment:
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As illustrated in fig. 1 and 2, the blade structure of a kind of vacuum pump of the present utility model, comprise the square shape sheet blade seat 1 be made up of cast iron materials, blade seat 1 two ends symmetry have an axial pass trough 2, and the radial center face of two axial pass troughs 2 is all coplanar with the radial center face of blade seat 1, the one piece of blade 3 that is slidably connected of radially interworking respectively in axial pass trough 2, blade 3 is made up of corrosion resistant engineering plastics, the end face outside of blade 3 is cambered surface, three blade location hole of the spring 4 are radially had in the middle part of the medial extremity of blade 3, three blade location hole of the spring 4 are longitudinally uniform on the inner side end of blade 3, three blade seat location hole of the spring 5 corresponding with blade location hole of the spring 4 are had in the bottom of axial pass trough 2, blade location hole of the spring 4 and and correspondence blade seat location hole of the spring 5 between blade Compress Spring 6 is housed, the two ends of blade Compress Spring 6 are connected on the bottom surface of blade location hole of the spring 4 and blade seat location hole of the spring 5 respectively, when the medial extremity of blade 3 is connected to the bottom of axial pass trough 2, the outboard end of blade 3 radially extends to the outer 2.5mm of axial pass trough 2.
A kind of rotary-vane vaccum pump pump chamber structure with above-mentioned novel blade, as shown in Figure 3, comprise the pump rotor 9 that the pump chamber 8 being rotatably connected on the pump housing 7 of the pump housing 7 and bias is interior and tangent with pump chamber 8 inwall, radial groove 10 is had at the middle part of pump rotor 9, the one piece of blade seat 1 that is slidably connected of radially interworking in radial groove 10, the side wall surface of blade seat 1 and the side wall surface gap of radial groove 10 are 0.06mm, blade seat 1 two ends symmetry have an axial pass trough 2, the one piece of blade 3 that is slidably connected of radially interworking respectively in axial pass trough 2, the outboard end of blade 3 radially extends to the outer 2.5mm of axial pass trough 2, the two ends of blade seat 1 extend to the outer 5mm of pump rotor 9.
Specific embodiment described herein is only to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (5)
1. the blade structure of a vacuum pump, it is characterized in that: comprise the blade seat (1) of metal material and be located at the axial pass trough (2) at blade seat (1) two ends, radially be slidably connected respectively blade (3) in axial pass trough (2), and when the medial extremity of blade (3) is connected to the bottom of axial pass trough (2), the outboard end of blade (3) radially extends to axial pass trough (2) outward.
2. the blade structure of vacuum pump according to claim 1, is characterized in that: described blade seat (1) is wear-resistant metal material, and blade (3) is Erosion-Resisting Non-metallic Materials.
3. the blade structure of vacuum pump according to claim 1 and 2, is characterized in that: when the medial extremity of described blade (3) is connected to the bottom of axial pass trough (2), and the outboard end of blade (3) radially extends to axial pass trough (2) outer 2mm to 3mm.
4. the blade structure of vacuum pump according to claim 1 and 2, is characterized in that: the radial center face of described axial pass trough (2) and the radial center face of blade seat (1) coplanar.
5. the blade structure of vacuum pump according to claim 1 and 2, it is characterized in that: be radially provided with several blade location hole of the spring (4) at the medial extremity of described blade (3), the blade seat location hole of the spring (5) corresponding with blade location hole of the spring (4) is provided with in the bottom of axial pass trough (2), between blade location hole of the spring (4) and blade seat location hole of the spring (5), be provided with blade Compress Spring (6), the two ends of blade Compress Spring (6) are connected on the bottom surface of blade location hole of the spring (4) and blade seat location hole of the spring (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229416.0U CN204610283U (en) | 2015-04-16 | 2015-04-16 | The blade structure of vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520229416.0U CN204610283U (en) | 2015-04-16 | 2015-04-16 | The blade structure of vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610283U true CN204610283U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520229416.0U Active CN204610283U (en) | 2015-04-16 | 2015-04-16 | The blade structure of vacuum pump |
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| CN (1) | CN204610283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832433A (en) * | 2015-04-16 | 2015-08-12 | 浙江飞越机电有限公司 | Novel rotary vane structure, and rotary vane vacuum pump cavity structure with rotary vane |
-
2015
- 2015-04-16 CN CN201520229416.0U patent/CN204610283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832433A (en) * | 2015-04-16 | 2015-08-12 | 浙江飞越机电有限公司 | Novel rotary vane structure, and rotary vane vacuum pump cavity structure with rotary vane |
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| GR01 | Patent grant |