CN203641003U - 45-degree pitch pressure angle involute type rotor of roots pump - Google Patents
45-degree pitch pressure angle involute type rotor of roots pump Download PDFInfo
- Publication number
- CN203641003U CN203641003U CN201320891758.XU CN201320891758U CN203641003U CN 203641003 U CN203641003 U CN 203641003U CN 201320891758 U CN201320891758 U CN 201320891758U CN 203641003 U CN203641003 U CN 203641003U
- Authority
- CN
- China
- Prior art keywords
- involute
- pressure angle
- rotor
- degree pitch
- pitch pressure
- 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
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model belongs to roots pumps and relates to a 45-degree pitch pressure angle involute type rotor of a roots pump. The 45-degree pitch pressure angle involute type rotor is characterized by comprising an involute type rotor, wherein the curve at each side is in a 45-degree pitch pressure angle involute type; the 45-degree pitch pressure angle involute type is a BK1K2C curve consisting of a tooth-root arc-section involute meshing section and a tooth-top arc section; the connecting position of the two adjacent curves forms a wholly-smooth curve by smooth transition. The 45-degree pitch pressure angle involute type rotor has the characteristics that not only is the design reasonable, is the structure compact, are the overlap ratio and the transmission performance obviously improved, but also the working efficiency of the roots vacuum pump is improved, the problem of molded-line interference in the traditional involute rotor is solved, the wear resistance and the bearing capability of rotor transmission are improved and the like. The 45-degree pitch pressure angle involute type rotor can be widely applicable to transmission of various gases, blowing of a small blast furnace and a cupola furnace and solid-particle conveying devices for grain, cement, particle-shaped chemical products and the like.
Description
Technical field
The utility model belongs to Roots pump, particularly 45 of a kind of Roots pump ° of pitch circle pressure angle involute-type rotors.45 ° of pitch circle pressure angle involute-type rotors of this Roots pump, can be widely used in the conveying of various gases, small furnace, cupola furnace air blast, and on the solid particle feedway such as grain, cement, spheroidizing chemical product.
Background technique
At present, Roots pump is rotary volume vacuum pump, its structural type is to be developed by Roots blower, its structure is in pump housing chamber, there is the rotor of two " 8 " fonts to be arranged on mutual vertically on pair of parallel axle, the a pair of gear driven that is 1 by velocity ratio, does reverse each other synchronous rotary motion.The outer contour of rotor cross-section is the molded line of rotor.Whether what molded lines of rotor designed rationally will be directly connected to the quality of pump pumping performance.Therefore,, in the design process of Roots pump, the molded line of design definite rotor is very important.
As everyone knows, the molded lines of rotor of its Roots pump mainly contains three classes: involute-type, circular arc type and gerotor type.The rotor of gerotor type is because area utilization factor is compared with low seldom application; The rotor tooth top sealability of circular arc molded line is poor, and its volumetric efficiency is lower, and when particularly machining error is larger, more obvious on the impact of volumetric efficiency, its application can not extensively be promoted; And existing pitch circle pressure angle α
tbe the involute-type rotor of 50.46 °, i.e. involute-type rotor vertical center line and Base radius r
oangle α
t; Although be widely used, its structure comprises symmetrical upper and lower two halves rotor involute-type, described every half rotor involute-type is made up of symmetrical both sides curve, every side curve of its rotor comprises top circle segmental arc, involute engaged section and root circle segmental arc, it adjoins two sections of curves and connects into overall curve, its engaged section is all involute, and its tooth top and tooth root are arc section; But due to pitch circle pressure angle α
tbe 50.46 °, cause arc section larger, while carrying out instantaneous point engagement, the molded line interference problem of existence, sealability is not good, and to the stationarity of gas flow, the area utilization factor of profile of tooth has adverse effect.Therefore, the shortcoming and defect existing for above-mentioned involute-type rotor, researchs and develops a kind of Roots pump 45 by adopting pitch circle pressure angle to reduce and spends the involute-type rotor of pitch circle pressure angle, is very necessary.
Summary of the invention
The utility model is intended to the shortcoming and defect part existing in above-mentioned technology, is grasping raising rotor meshing performance and is setting out, and reduces the involute-type curved segments of pitch circle pressure angle by employing; And provide a kind of 45 ° of pitch circle pressure angle involute-type rotors of Roots pump; These 45 ° of pitch circle pressure angle involute-type rotors are not only reasonable in design, compact structure, both made contact ratio, transmission performance significantly improve, improve again the working efficiency of Roots pump, and solved the molded line interference problem that traditional involute rotor exists, and improve the feature such as the wear resistance of rotor transmission and the bearing capacity of rotor transmission.
The purpose of this utility model is to adopt following technological scheme to realize: 45 ° of pitch circle pressure angle involute-type rotors of described Roots pump, comprise top circle segmental arc, involute engaged section and the root circle segmental arc of the every side curve of rotor, rotor of involute-type, it is characterized in that: its every side curve adopts 45 ° of pitch circle pressure angle involute-types, the BK that 45 ° of described pitch circle pressure angle involute-types are sequentially made up of root circle segmental arc involute engaged section and top circle segmental arc
1k
2c curve, its joint of adjoining two sections of curves becomes the curve of whole smooth by rounding off.
Principle of the present utility model and feature are described below:
The utility model is on the basis of existing, traditional involute-type rotor, on the curve that the every side of each involute-type rotor in its pump case is made up of top circle segmental arc, involute engaged section and root circle segmental arc, involute pitch circle pressure angle is reduced to 45 ° by 50.46 °, the BK being formed by root circle segmental arc, involute engaged section and top circle segmental arc
1k
2c curve.Its pitch circle pressure angle α
tthe arc section that reduces not only to have reduced tooth top, tooth root portion, and increased the contact ratio of rotor engagement, make rotor reach good engagement effect in the process of running.The radius of curvature of its tooth root, top circle segmental arc equals respectively the dedendum of the tooth h of involute-type rotor
f, addendum ha.
The comprehensive above technological scheme of taking, realizes the purpose of this utility model.
Compared with prior art, the utility model is not only reasonable in design, compact structure, both made contact ratio, transmission performance significantly improve, improve again the working efficiency of Roots pump, and solved the molded line interference problem that traditional involute rotor exists, and improve the feature such as the wear resistance of rotor transmission and the bearing capacity of rotor transmission.Can be widely used in the conveying of various gases, small furnace, cupola furnace air blast, and on the solid particle feedway such as grain, cement, spheroidizing chemical product.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The utility model has two width accompanying drawings.Wherein:
Accompanying drawing 1 is the main TV structure schematic diagram of specific embodiment of the utility model;
Accompanying drawing 2 is the A place enlarged diagrams in Fig. 1.
In figure: 1, root circle segmental arc, 2, involute engaged section, 3, top circle segmental arc, 4, pitch circle, 5, pump case, 6, involute-type rotor.
Embodiment
Shown in Fig. 1,2, it is specific embodiment of the utility model, it is the involute-type rotor of 45 degree pitch circle pressure angles of the Roots pump installed on gas transportation machine, its structure comprises top circle segmental arc, involute engaged section and the root circle segmental arc of rotor 6 and the every side curve of rotor 6 of pump case 5 interior involute-types, it is characterized in that: its every side curve adopts 45 ° of pitch circle pressure angle involute-types, 45 ° of described BK that pitch circle pressure angle involute-type is sequentially made up of root circle segmental arc 1, involute engaged section 2 and top circle segmental arc 3
1k
2c curve, its joint of adjoining two sections of curves becomes the curve of whole smooth by rounding off.
The radius of curvature of described root circle segmental arc 1 equals the dedendum of the tooth h of involute-type rotor
f.
The radius of curvature of described top circle segmental arc 3 equals the addendum ha of involute-type rotor.
Involute Base radius in this specific embodiment is r
o.
Involute Pitch radius in this specific embodiment is R
p.
The above; it is only preferably embodiment of the present utility model; but protection domain of the present utility model is not limited to this; allly be familiar with those skilled in the art in the disclosed technical scope of the utility model, within being equal to and replacing or change and all should be encompassed in protection domain of the present utility model according to the technical solution of the utility model and design of the present utility model thereof.
Claims (3)
1. 45 of a Roots pump ° of pitch circle pressure angle involute-type rotors, comprise top circle segmental arc, involute engaged section and the root circle segmental arc of the every side curve of rotor, rotor of involute-type, it is characterized in that: its every side curve adopts 45 ° of pitch circle pressure angle involute-types, the BK that 45 ° of described pitch circle pressure angle involute-types are sequentially made up of root circle segmental arc (1) involute engaged section (2) and top circle segmental arc (3)
1k
2c curve, its joint of adjoining two sections of curves becomes the curve of whole smooth by rounding off.
2. by 45 ° of pitch circle pressure angle involute-type rotors of Roots pump claimed in claim 1, it is characterized in that: the radius of curvature of described root circle segmental arc (1) equals the dedendum of the tooth h of involute-type rotor
f.
3. by 45 ° of pitch circle pressure angle involute-type rotors of Roots pump claimed in claim 1, it is characterized in that: the radius of curvature of described top circle segmental arc (3) equals the addendum ha of involute-type rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891758.XU CN203641003U (en) | 2013-12-31 | 2013-12-31 | 45-degree pitch pressure angle involute type rotor of roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891758.XU CN203641003U (en) | 2013-12-31 | 2013-12-31 | 45-degree pitch pressure angle involute type rotor of roots pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641003U true CN203641003U (en) | 2014-06-11 |
Family
ID=50872255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891758.XU Expired - Fee Related CN203641003U (en) | 2013-12-31 | 2013-12-31 | 45-degree pitch pressure angle involute type rotor of roots pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641003U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762632A (en) * | 2016-12-12 | 2017-05-31 | 无锡吴创环境科技有限公司 | A kind of Roots Blower Impeller |
| CN108799111A (en) * | 2018-01-09 | 2018-11-13 | 中国石油大学(华东) | A kind of asymmetry roots rotor |
-
2013
- 2013-12-31 CN CN201320891758.XU patent/CN203641003U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762632A (en) * | 2016-12-12 | 2017-05-31 | 无锡吴创环境科技有限公司 | A kind of Roots Blower Impeller |
| CN108799111A (en) * | 2018-01-09 | 2018-11-13 | 中国石油大学(华东) | A kind of asymmetry roots rotor |
| CN108799111B (en) * | 2018-01-09 | 2023-09-22 | 中国石油大学(华东) | Asymmetric Roots rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203189267U (en) | Conjugated internal-external cycloid involute-type rotor of roots vacuum pump | |
| CN101435425B (en) | Novel tooth form of screw rod rotor of double-screw compressor | |
| CN108757464B (en) | Straight claw rotor of claw type vacuum pump and molded line design method thereof | |
| CN106194717B (en) | A kind of rubber screw rod molded lines of rotor suitable for spiral displacement pump | |
| CN102828954B (en) | Novel rotor profile of twin-screw compressor | |
| CN104929942A (en) | Fully-meshed claw type rotor profile | |
| CN105041647B (en) | A kind of double-screw compressor rotor flute profile | |
| CN105822548A (en) | Total-smooth claw type rotor | |
| CN203641003U (en) | 45-degree pitch pressure angle involute type rotor of roots pump | |
| CN110762011B (en) | Claw type pump rotor and claw type pump | |
| CN112555154A (en) | Full-smooth self-meshing dry screw vacuum pump and rotor thereof | |
| CN103982425A (en) | Tooth type of dry double-screw compressor rotor | |
| CN202900668U (en) | Novel double screw compressor rotor | |
| CN203384049U (en) | Double screw rod compressor rotor molded line for oil injection | |
| CN206487619U (en) | A kind of complete smooth straight pawl claw rotor | |
| CN110645172B (en) | Screw vacuum pump rotor and screw vacuum pump | |
| CN108757438B (en) | Full-smooth screw rotor with small enclosed volume and design method thereof | |
| CN104265629B (en) | A kind of outside circle root circle phase cut distribution both sides are the cam follower of cam curve | |
| CN110878754A (en) | Two-blade rotor profile of Roots vacuum pump | |
| CN203223383U (en) | Screw rotor type line of strictly sealed dry type screw vacuum pump | |
| CN106948863B (en) | Full-smooth asymmetric double-claw rotor | |
| CN107882735A (en) | A kind of strict closed type bidentate Twin-screw vacuum pump molded lines of rotor | |
| CN205533212U (en) | Novel trochoid screw vacuum pump rotor molded lines | |
| CN108757439B (en) | Double-head full-smooth screw rotor of double-screw liquid pump and design method thereof | |
| CN210218091U (en) | Gear rotor of gear pump |
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 |
Granted publication date: 20140611 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |