CN102022369A - Anti-reversing structure for pump - Google Patents
Anti-reversing structure for pump Download PDFInfo
- Publication number
- CN102022369A CN102022369A CN2009100443598A CN200910044359A CN102022369A CN 102022369 A CN102022369 A CN 102022369A CN 2009100443598 A CN2009100443598 A CN 2009100443598A CN 200910044359 A CN200910044359 A CN 200910044359A CN 102022369 A CN102022369 A CN 102022369A
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- CN
- China
- Prior art keywords
- impeller
- chuck
- rotating shaft
- impeller nut
- nut
- 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.)
- Pending
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An anti-reversing structure for a pump comprises a rotating shaft (1), wherein one end of the rotating shaft (1) is provided with an impeller (6); an impeller nut (3) is arranged on the shaft end; a chuck (2) is arranged between the impeller (6) and the impeller nut (3) on the shaft end; the chuck (2) is linked with the rotating shaft (1) by the flat keys which are arranged in a shaft hole key slot of the chuck and a corresponding key slot of the rotating shaft; the impeller nut (3) is arranged in a thin-wall sleeve (7) on the front end of the chuck (2); and the thin-wall sleeve (7) is deformed and then clasps the multiangular impeller nut (3) so as to fixedly connect the impeller nut (3) with the chuck (2). The structure can efficiently prevent the problems that the impeller nut loosens and drops when the impeller reversely rotates caused by machine halt, so as to greatly increase the running stability of pump.
Description
Technical field
The present invention relates to transfer pump, further be meant the structure that prevents the impeller shaft counter-rotating of cantilever pump.
Background technique
At present, existing IH suspension-type cantilever pump on the market (referring to " and Paddle Pump Designing handbook P109, China Machine Press) impeller all be that impeller nut directly is tightened on the axle at fixing on the axle.The defective that this structure exists is that the user only has been equipped with gate valve on pumping under many circumstances, cuts down and be equipped with non-return; When pump normally moved, from drive end, pump clockwise direction rotation reached, and screw thread is a right-hand thread on the axle, and impeller nut is a right-hand thread, and impeller nut under liquid resistance and the rotatory inertia effect, can change tighter and tighter in pump, problem can not take place.But can occur the impeller nut problem that gets loose when shutting down, this is that pump and pipeline liquid back flow because motor is shut down; water hammer takes place, the axle counter-rotating, it is loose more until coming off that impeller nut changes under liquid resistance and inertia more; in case impeller nut comes off, can cause the loss of entire pump.
Summary of the invention
The technical problem to be solved in the present invention is, at the defective that prior art exists, designs a kind of anti-reverse-rotation structure of pump, and it can be shut down at pump prevent that effectively impeller nut from becoming flexible extremely, coming off when the impeller shaft counter-rotating takes place.
Technological scheme of the present invention is, the anti-reverse-rotation structure of described pump comprises the rotating shaft that an end is equipped with impeller and impeller nut is housed at this axle head, its structural feature is, chuck between impeller and impeller nut is being housed on the described axle head, and this chuck and rotating shaft connect by the flat key in the corresponding keyway that is contained in chuck axis hole keyway and rotating shaft, and impeller nut is arranged in the thin walled cylinder body of described chuck front end and is embraced polygonal impeller nut and made this chuck become fixedly connected with impeller nut by this thin walled cylinder body distortion.
Below the present invention made further specify.
Referring to Fig. 1, the anti-reverse-rotation structure of described pump comprises the rotating shaft 1 that an end is equipped with impeller 6 and impeller nut 2 is housed at this axle head, its structural feature is, chuck 2 between impeller 6 and impeller nut 3 is being housed on the described axle head, and this chuck 2 and rotating shaft 1 connect by the flat key in the corresponding keyway that is contained in chuck axis hole keyway and rotating shaft makes chuck and rotating shaft relative rotation can not take place, and impeller nut 3 is arranged in the thin walled cylinder body 7 of described chuck 2 front ends and is embraced polygonal impeller nut 3 and made this chuck 2 fixedly connected with 3 one-tenth of impeller nuts by these thin walled cylinder body 7 distortion.
Described polygonal impeller nut 3 can be the hexagon nut or the tetragonal nut of prior art.
The present invention has designed a chuck 2 on the original structure basis, the corresponding keyway that is milled with keyway and rotating shaft (impeller shaft) 1 on the chuck 2 is linked together by flat key, and chuck 2 just relative rotation can not take place with rotating shaft 1 so; Impeller nut 3 makes impeller 6, rotating shaft 1, chuck 2 at axial restraint by screw thread; Flatten the thin walled cylinder body 7 of chuck 2 front ends and make it fixedly connected after fixing, then can not produce relative rotation between chuck 2 and the impeller nut 3, realized fixedlying connected of impeller nut 3 and rotating shaft 1 by chuck 2 thus with 3 one-tenth of impeller nuts; When pump was shut down, liquid flow backwards, and did not have relative rotation angle because of impeller nut 3 and rotating shaft 1 are linked together, so impeller nut 3 rotates synchronously with rotating shaft 1, can not come off.When pump needs repairing, can pry open the thin walled cylinder body 7 that chuck 2 is flattened, unscrew impeller nut 3, get final product.
As known from the above, the present invention is a kind of anti-reverse-rotation structure of pump, and it is with respect to existing IH pump, ZA pump, and what thoroughly solved former existence causes the impeller nut problem of becoming flexible, come off when the impeller shaft counter-rotating takes place because of shutting down, and makes the operation stability of pump greatly improve.
Description of drawings
Fig. 1 is the sectional structure of an embodiment of the present invention;
Fig. 2 is the sectional structure chart of chuck among Fig. 1;
Fig. 3 is the sectional structure chart of impeller nut among Fig. 1;
Fig. 4 is that the A of Fig. 3 is to view;
In the drawings:
The 1-rotating shaft, the 2-chuck, the 3-impeller nut,
The 4-pad, the 5-flat key, the 6-impeller,
The 7-thin walled cylinder body, the 8-keyway.
Embodiment
As shown in Figure 1, the anti-reverse-rotation structure of pump of the present invention comprises the rotating shaft 1 that an end is equipped with impeller 6 and impeller nut 3 is housed at this axle head, its structural feature is, chuck 2 between impeller 6 and impeller nut 3 is being housed on the described axle head, and this chuck 2 and rotating shaft 1 connect by the flat key in the corresponding keyway that is contained in chuck axis hole keyway and rotating shaft makes chuck and rotating shaft relative rotation can not take place, and impeller nut 3 is arranged in the thin walled cylinder body 7 of described chuck 2 front ends and is embraced polygonal impeller nut 3 and made this chuck 2 fixedly connected with 3 one-tenth of impeller nuts by these thin walled cylinder body 7 distortion.Described polygonal impeller nut 3 is the hexagon nut of prior art.
This structure is applicable to suspension-type cantilever pump etc.It is used for the XB90-80 pump, turns round nearly 2 years, does not break down so far, and is unkitted using in same operating mode of anti-deinstall equally, the impeller obscission just takes place in general about 20 days, damages pump.
Claims (1)
1. the anti-reverse-rotation structure of a pump comprises that an end is equipped with impeller (6) and the rotating shaft (1) of impeller nut (3) is housed at this axle head, it is characterized in that, a chuck (2) that is positioned between impeller (6) and the impeller nut (3) is being housed on the described axle head, and this chuck (2) and rotating shaft (1) connect by the flat key in the corresponding keyway that is contained in chuck axis hole keyway and rotating shaft, and impeller nut (3) is arranged in the thin walled cylinder body (7) of described chuck (2) front end and is embraced polygonal impeller nut (3) and made this chuck (2) become fixedly connected with impeller nut (3) by this thin walled cylinder body (7) distortion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100443598A CN102022369A (en) | 2009-09-16 | 2009-09-16 | Anti-reversing structure for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100443598A CN102022369A (en) | 2009-09-16 | 2009-09-16 | Anti-reversing structure for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022369A true CN102022369A (en) | 2011-04-20 |
Family
ID=43864031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100443598A Pending CN102022369A (en) | 2009-09-16 | 2009-09-16 | Anti-reversing structure for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499677A (en) * | 2016-11-11 | 2017-03-15 | 艾迪机器(杭州)有限公司 | A kind of reverse self-lock protection mechanism |
-
2009
- 2009-09-16 CN CN2009100443598A patent/CN102022369A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499677A (en) * | 2016-11-11 | 2017-03-15 | 艾迪机器(杭州)有限公司 | A kind of reverse self-lock protection mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |