CN2721914Y - Corrosion-proof rotor of Roots pump - Google Patents
Corrosion-proof rotor of Roots pump Download PDFInfo
- Publication number
- CN2721914Y CN2721914Y CN2004200787606U CN200420078760U CN2721914Y CN 2721914 Y CN2721914 Y CN 2721914Y CN 2004200787606 U CN2004200787606 U CN 2004200787606U CN 200420078760 U CN200420078760 U CN 200420078760U CN 2721914 Y CN2721914 Y CN 2721914Y
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotating shaft
- corrosion
- roots pump
- bodies
- 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 - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
- F01C1/126—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with elements extending radially from the rotor body not necessarily cooperating with corresponding recesses in the other rotor, e.g. lobes, Roots type
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a corrosion-proof rotor of roots pump with a waist shape cross section and a center penetrated with a rotating shaft. The corrosion-proof rotor of roots pump is characterized in that two sides at the diameter direction of the rotating shaft are respectively and symmetrically welded with the same metal tube bodies, two ends of the tube bodies are respectively welded with cover plates for forming sealing rotor bodies, and a plastic corrosion-proof layer is formed via the appearance pre-embedded and injected in the rotor bodies and the body part of the rotating shaft welded to the rotor bodies. The surfaces of the rotor bodies of the utility model are distributed with lugs or convex edges for firm combination between the plastic and metal surface, and thus the aims of corrosion prevention and long service life can be realized.
Description
Technical field:
The utility model relates to the pump technology, particularly to the improvement of roots pump rotor.
Background technique:
When pump when conveying contains Korrosionsmedium, can produce corrosion, reduction of service life to the cylinder body of pump and blade.The pump housing of existing multiple model improves this, and the spraying fluorine is moulded the alloy anticorrosive coat in pump, but has the caducous inadequately problem of anticorrosive coat bonding strength.In addition, because complex-shaped in the Roots pump, the spraying corrosion resistant coating difficulty is so the anticorrosion problem of Roots pump fails effectively to solve always.
Summary of the invention:
The purpose of this utility model is to have anticorrosive coat and in conjunction with firm rotor for Roots pump provides a kind of.
The cross section of the utility model rotor is waist shape, rotating shaft is run through at the center, it is characterized in that each balanced welding of rotating shaft diametric(al) both sides connects an identical metal body, each weldering of body two ends connects cover plate and constitutes enclosed rotor body, and the appearance by the pre-buried rotating shaft axle body position that is injection-moulded in rotor body and connects with its weldering constitutes the plastics anticorrosive coat.The rotating shaft axle body position weldering that connects at rotor body or/and with its weldering connects a plurality of metal fins.
The utility model connects the slightly little metal body of diameter at rotating shaft axle body two face down bondings and constitutes rotor body, pre-buried injection moulding can realize thicker anticorrosive coat, add that the metal surface distribution is shaped on projection or fin, it is more firm that plastics are combined with the metal surface, thereby realize purpose anticorrosion, that increase the service life.
Description of drawings:
Fig. 1 is the utility model embodiment longitudinal section.
Fig. 2 is the utility model embodiment cross-sectional view.
Embodiment:
With reference to accompanying drawing.Each weldering of the diameter both sides of rotating shaft 3 connects an identical metal tube, and each weldering of the two ends of pipe connects metal cover board 4, constitutes the rotor body 1 of sealing.Connect fin 5 at interval in rotating shaft 3 with outer surface weldering in the length range that rotor body 1 is connected, or the multiple spot projection.Fin or projection 5 can be welded in surface both, one of also can be therein welding.After this on injection machine, utilize waist shape mould,, form thicker engineering plastics anticorrosive coat 2 at rotor body 1 and rotating shaft 3 appearances with the pre-buried injection moulding of rotor.Because the effect of fin 5 or projection, plastic protective cover 2 and metal to combine effect stronger, even be subjected to the bump of lump in the medium in running, the anticorrosive coat plastics can not peel off yet.
Claims (2)
1, a kind of corrosion resistant roots pump rotor, the cross section is waist shape, rotating shaft (3) is run through at waist shape center, it is characterized in that each balanced welding of rotating shaft (3) diametric(al) both sides connects an identical metal body, each weldering of body two ends connects cover plate (4) and constitutes enclosed rotor body (1), and the appearance by the pre-buried rotating shaft axle body position that is injection-moulded in rotor body (1) and connects with its weldering constitutes plastics anticorrosive coats (2).
2, roots pump rotor according to claim 1 is characterized in that at rotor body (1) or/and connect a plurality of metal fins (5) with its weldering rotating shaft axle body position weldering even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004200787606U CN2721914Y (en) | 2004-08-18 | 2004-08-18 | Corrosion-proof rotor of Roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004200787606U CN2721914Y (en) | 2004-08-18 | 2004-08-18 | Corrosion-proof rotor of Roots pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2721914Y true CN2721914Y (en) | 2005-08-31 |
Family
ID=35012286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004200787606U Expired - Lifetime CN2721914Y (en) | 2004-08-18 | 2004-08-18 | Corrosion-proof rotor of Roots pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2721914Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962266A (en) * | 2022-05-08 | 2022-08-30 | 烟台东德实业有限公司 | One-way bearing type ice-breaking hydrogen circulating pump |
-
2004
- 2004-08-18 CN CN2004200787606U patent/CN2721914Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962266A (en) * | 2022-05-08 | 2022-08-30 | 烟台东德实业有限公司 | One-way bearing type ice-breaking hydrogen circulating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140818 Granted publication date: 20050831 |