CN201152281Y - Turbine blades for molecular pump - Google Patents
Turbine blades for molecular pump Download PDFInfo
- Publication number
- CN201152281Y CN201152281Y CNU2007201272865U CN200720127286U CN201152281Y CN 201152281 Y CN201152281 Y CN 201152281Y CN U2007201272865 U CNU2007201272865 U CN U2007201272865U CN 200720127286 U CN200720127286 U CN 200720127286U CN 201152281 Y CN201152281 Y CN 201152281Y
- Authority
- CN
- China
- Prior art keywords
- teeth
- leaf
- type variable
- step type
- molecular pump
- 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
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A turbine vane of a molecule pump is characterized in that the whole outline of the turbine vane is designed into a disc shape, the central part of the turbine vane is provided with a disc with installation holes, the circumference of the disc is provided with vane teeth, and the vane teeth are distributed along the circumference in the radial direction. The vane teeth have step type variable section, and an inclined angle is formed between the step type variable section vane teeth and the disc. The step number of the step type variable section vane teeth is more than or equal to two, the step surface of the step type variable section vane teeth is an arc surface 1, and the root 2 of the step is designed to a chamfer angle or circular arc transition. The radius of the arc surface 1 is designed between 8 and 15 cm. The turbine vane has simple structure, stable art, convenient manufacture, and high strength in high speed operation and long service life.
Description
Technical field
The utility model relates to a kind of mechanical device relevant with fluid, refers in particular to a kind of parts of vacuum pump, more specifically says, the utility model is a kind of turbine blade that is used for molecular pump, and in International Patent Classification (IPC), the utility model should be divided into F portion.
Background technique
In all kinds of vacuum pumps with mechanical motion, the pump that molecular pump is a kind of precise structure, technological requirement is high.The geometrical shape of pump blade and pumping speed and intensity have very big relation.At present, the kind with regard to molecular pump blade is divided into the system turned round substantially and mills system two classes.Compare with milled blade, under the condition of same diameter, angle and speed, turn round the system blade and lack variable how much, and the intensity of fan-shaped blade face root is relatively poor.Whole milled blade is subjected to the restriction of machining tool also to be difficult to select best geometrical shape.Other has a kind of milled blade of rectangle leaf-teeth, though the simple leaf-teeth of processing are difficult for lengthening, otherwise because of leaf-teeth can't bear the centrifugal force that produces when running up, and cause its fracture.
The model utility content
The purpose of this utility model is, at the deficiency of prior art, provides both to be easy to the optimization of geometric parameters selection, and very high strength is arranged again, and the simple a kind of turbine blade that is used for molecular pump of processing technology.
The purpose of this utility model is achieved through the following technical solutions:
The overall profile of described turbine blade is discoid, and the position is the disk that has mounting hole in the central, has leaf-teeth around described disk, and described leaf-teeth radially are being uniformly distributed along the circumference.
Described leaf-teeth are step type variable cross section leaf-teeth.
Described step type variable cross section leaf-teeth and described disk form the tilt angle.
The tilt angle that described step type variable cross section leaf-teeth and described disk form is 30 degree.
The tilt angle that described step type variable cross section leaf-teeth and described disk form is 15 degree.
The number of steps of described step type variable cross section leaf-teeth 〉=2 roads, the step surface of described step type variable cross section leaf-teeth is a cambered surface 1, step root 2 is chamfering or arc transition.
Described cambered surface 1 its radius is 8-15cm.
The number of steps of described step type variable cross section leaf-teeth is 4 roads, and the thickness of leaf-teeth is followed successively by from outside to inside: 0.1cm, 0.2cm, 0.3cm, 0.4cm, the per pass length of bench is 2.5cm, step root 2 chamfering 0.05cm.
Because the utility model has adopted above-mentioned technological scheme, on geometric parameter, carry out optimized choice, thereby the utlity model has very high intensity, particularly its advantage is outstanding when running up, so obviously improved working life.Another one advantage of the present utility model is that its processing technology is quite simple, thereby cost is very low, is beneficial to produce and promote.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described, wherein:
Accompanying drawing 1 is a general structure schematic representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.Accompanying drawing 1 is a general structure schematic representation of the present utility model.Shown in this accompanying drawing, the utility model overall profile is discoid, and the position is the disk that has mounting hole in the central, has leaf-teeth around described disk, and described leaf-teeth radially are being uniformly distributed along the circumference.Described leaf-teeth are step type variable cross section leaf-teeth.Described step type variable cross section leaf-teeth and described disk form the tilt angle.The number of steps of described step type variable cross section leaf-teeth 〉=2 roads.In order more to clearly illustrate concrete structure, accompanying drawing 2 shown be the partial structurtes enlarged diagram of step type variable cross section leaf-teeth, can see from this figure: the step surface of described step type variable cross section leaf-teeth is a cambered surface 1, step root 2 chamferings or arc transition.
In a concrete embodiment, described tilt angle is 30 degree, the number of steps of described step type variable cross section leaf-teeth is 4 roads, generally speaking, its radius of described cambered surface is 8-15cm, and present embodiment is chosen as 12.5cm, and the thickness of leaf-teeth is followed successively by from outside to inside: 0.1cm, 0.2cm, 0.3cm, 0.4cm, the per pass length of bench is 2.5cm, step root 2 chamfering 0.05cm.In another embodiment, described tilt angle is 15 degree; Selected number of steps is 3 roads; The per pass length of bench is 3cm, other parameter constant.Note, more than only be indivedual embodiments' concrete condition, according to actual needs, in the scope of such scheme, can similarly be equal to replacement fully.That is to say, turbine blade provided by the utility model, parameters such as the radius of the angle of its leaf-teeth, length, step cambered surface, the thickness of leaf-teeth and leaf-teeth number all can be according to the needs of the design parameter of impeller intensity and molecular pump vacuum performance and determine.
Because the step surface of step type variable cross section leaf-teeth is technical measures such as cambered surface, step root chamfering or arc transition, stress is greatly reduced, and also reduced stress on this basis and concentrated, so obviously improved intensity.The utility model and prior art compare experiment, object relatively is the moving vane of rectangle leaf-teeth, and experiment is carried out under vacuum environment, under the situation identical at material, that size is suitable, when the moving vane of rectangle leaf-teeth moves to 15000 rev/mins, the leaf-teeth fracture.And the utility model is because the advantage of technological scheme is when moving to 20000 rev/mins, still excellent.
The utility model is relatively simple for structure, and the technology quite stable is convenient to make.What is more important, having when running up has very high intensity, has obviously improved working life.
Claims (8)
1. turbine blade that is used for molecular pump is characterized in that:
The overall profile of described turbine blade is discoid, and the position is the disk that has mounting hole in the central, has leaf-teeth around described disk, and described leaf-teeth radially are being uniformly distributed along the circumference.
2. the turbine blade that is used for molecular pump according to claim 1 is characterized in that:
Described leaf-teeth are step type variable cross section leaf-teeth.
3. the turbine blade that is used for molecular pump according to claim 2 is characterized in that:
Described step type variable cross section leaf-teeth and described disk form the tilt angle.
4. the turbine blade that is used for molecular pump according to claim 3 is characterized in that:
The tilt angle that described step type variable cross section leaf-teeth and described disk form is 30 degree.
5. the turbine blade that is used for molecular pump according to claim 3 is characterized in that:
The tilt angle that described step type variable cross section leaf-teeth and described disk form is 15 degree.
6. the turbine blade that is used for molecular pump according to claim 2 is characterized in that:
The number of steps of described step type variable cross section leaf-teeth 〉=2 roads, the step surface of described step type variable cross section leaf-teeth are cambered surface (1), and step root (2) is chamfering or arc transition.
7. the turbine blade that is used for molecular pump according to claim 6 is characterized in that:
Its radius of described cambered surface (1) is 8-15cm.
8. according to claim 4 or the 7 described turbine blades that are used for molecular pump, it is characterized in that:
The number of steps of described step type variable cross section leaf-teeth is 4 roads, and the thickness of leaf-teeth is followed successively by from outside to inside: 0.1cm, 0.2cm, 0.3cm, 0.4cm, the per pass length of bench is 2.5cm, step root (2) chamfering 0.05cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201272865U CN201152281Y (en) | 2007-08-01 | 2007-08-01 | Turbine blades for molecular pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201272865U CN201152281Y (en) | 2007-08-01 | 2007-08-01 | Turbine blades for molecular pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152281Y true CN201152281Y (en) | 2008-11-19 |
Family
ID=40127959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201272865U Expired - Fee Related CN201152281Y (en) | 2007-08-01 | 2007-08-01 | Turbine blades for molecular pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152281Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291552A (en) * | 2015-12-15 | 2018-07-17 | 埃地沃兹日本有限公司 | Vacuum pump and it is equipped on the rotary wings of the vacuum pump, reflecting mechanism |
-
2007
- 2007-08-01 CN CNU2007201272865U patent/CN201152281Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291552A (en) * | 2015-12-15 | 2018-07-17 | 埃地沃兹日本有限公司 | Vacuum pump and it is equipped on the rotary wings of the vacuum pump, reflecting mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202091251U (en) | Intermediate blade of compressor with hub with diameter of phi 940 | |
| CN101310112A (en) | Impeller of radial compressor | |
| CN110159585B (en) | Disc pump impeller | |
| CN201152281Y (en) | Turbine blades for molecular pump | |
| CN1892046A (en) | Dual-scroll pump | |
| CN2806844Y (en) | Double-casing volute pump | |
| CN102536900A (en) | Axial flow wind wheel | |
| CN210087675U (en) | Disc pump impeller | |
| CN101092972A (en) | Turbine blade in use for molecular pump | |
| CN204805117U (en) | Turbine formula vacuum pump | |
| CN201339608Y (en) | Molecular pump with variable cross section rotor and stator blade | |
| CN203098280U (en) | Novel blade pump rotor | |
| CN109681462B (en) | Reversible axial-flow pump impeller adopting elliptical-tip combined wing type | |
| CN202170868U (en) | Vane pump | |
| CN202493426U (en) | Novel three-screw pump molded line | |
| CN202065241U (en) | First-stage blade of air compressor with hub diameter of phi 762 | |
| CN105041686A (en) | Turbine type vacuum pump and automatic variable pumping speed vacuum obtaining device with pump | |
| CN101008392A (en) | Novel water pump | |
| CN201599244U (en) | Pneumatic submersible pump and semi-open centrifugal vortex compound impeller thereof | |
| CN108443160A (en) | Cutting type axial-flow pump | |
| CN217055678U (en) | Bipolar centrifugal compressor for hydrogen energy hydrogen reactor | |
| CN215830791U (en) | Three-dimensional flow curved surface centrifugal impeller series of low specific speed high-efficiency blower | |
| CN214035941U (en) | Multistage water turbine with different runner blade numbers | |
| CN201232635Y (en) | Compressor or vacuum pump | |
| CN201137570Y (en) | Vane pump rotor possessing concave surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100143 Beijing city Haidian District Tian Cun Bei Lu Hai Lan Xiyuan (Xiangxi degrees) 2 Building 2 unit 201 room Patentee after: Zhu Yue Address before: 100081, No. 13, building 12, 403 South Avenue, Haidian District, Beijing, Zhongguancun Patentee before: Zhu Yue |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20150801 |
|
| EXPY | Termination of patent right or utility model |