CN211314635U - Closed impeller with narrow flow passage - Google Patents
Closed impeller with narrow flow passage Download PDFInfo
- Publication number
- CN211314635U CN211314635U CN201921831991.2U CN201921831991U CN211314635U CN 211314635 U CN211314635 U CN 211314635U CN 201921831991 U CN201921831991 U CN 201921831991U CN 211314635 U CN211314635 U CN 211314635U
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- China
- Prior art keywords
- cover plate
- impeller
- narrow flow
- rear cover
- blades
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- 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
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Abstract
The utility model discloses a narrow flow passage closed impeller, which comprises a front cover plate and an open impeller body; the open impeller body comprises a rear cover plate and blades arranged on the front side plate surface of the rear cover plate; a hub used for connecting a pump shaft is arranged in the center of the rear cover plate; the front cover plate is fixedly butted with one surface of the open impeller body, on which the blades are arranged. The utility model discloses a closed impeller structure when not influencing impeller intensity, shaft hole intensity, can guarantee runner size and roughness, does not have the problem that the clearance difficulty was polished to casting dead angle position for each runner of impeller realizes the designing requirement and impeller performance completely, uses this closed impeller structure can promote the holistic work efficiency of narrow runner closed impeller casting qualification rate and pump package greatly.
Description
Technical Field
The utility model relates to a narrow runner closed impeller belongs to impeller design field.
Background
The impeller is an important component of various pump groups, the impeller is an important part in the pump groups, and the production and manufacturing level of the impeller determines the efficiency and energy consumption of the pump. The impeller roughly can be divided into closed impeller, semi-open impeller, open impeller from structural classification impeller, and wherein closed impeller is owing to seal by the apron from top to bottom, and closed impeller leads to the inner chamber to polish the sand removal difficulty owing to there is the inner chamber structure of distortion, so the manufacturing difficulty is the biggest, and most of them can only be accomplished through all kinds of casting modes, and especially the delivery port along with closed impeller is less, and the manufacturing difficulty becomes the geometric multiple and rises. The impeller with small water outlet and high performance requirement can only be finished by precision casting, but also has the problem of scrapping due to the influence on the hydraulic performance caused by poor roughness of the impeller runner due to difficult sand removal. Therefore, another process for producing and processing the narrow-flow-passage closed impeller is important.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a there is the big problem of the preparation degree of difficulty when solving traditional technology preparation narrow runner closed impeller, and provide a narrow runner closed impeller.
The utility model aims at realizing through the following technical scheme:
the utility model relates to a narrow flow passage closed impeller, which comprises a front cover plate and an open impeller body; the open impeller body comprises a rear cover plate and blades arranged on the front side plate surface of the rear cover plate; a hub used for connecting a pump shaft is arranged in the center of the rear cover plate; the front cover plate is fixedly butted with one surface of the open impeller body, on which the blades are arranged.
And a front opening ring is arranged in the center of the front side plate surface of the front cover plate.
And a rear opening ring is arranged on the outer ring of the hub on the rear side plate surface of the rear cover plate.
And a balance hole is formed in the rear cover plate between the hub and the rear opening ring.
And a key groove for positioning the circumference of the pump shaft is processed on the inner wall surface of the hub.
The blades arranged on the front side plate surface of the rear cover plate are arc blades or straight blades.
And after the front cover plate and the open impeller body are positioned by the positioning pins, two ends of the positioning pins are respectively welded with the front cover plate and the open impeller body, so that the fixation of the front cover plate and the open impeller body is realized.
Advantageous effects
The utility model discloses a closed impeller structure when not influencing impeller intensity, shaft hole intensity, can guarantee runner size and roughness, does not have the problem that the clearance difficulty was polished to casting dead angle position for each runner of impeller realizes the designing requirement and impeller performance completely, uses this closed impeller structure can promote the holistic work efficiency of narrow runner closed impeller casting qualification rate and pump package greatly.
Drawings
Fig. 1 is a front view of the structure of the narrow flow passage closed impeller of the present invention;
fig. 2 is a left side view of the structure of the narrow flow passage closed impeller of the present invention;
fig. 3 is a schematic structural view of a front cover plate in the narrow flow passage closed impeller of the present invention;
fig. 4 is a schematic structural view of the open impeller body in the narrow flow passage closed impeller of the present invention;
in the drawings, 1-front cover plate; 2-front mouth ring; 3-a rear cover plate; 4-positioning pins; 5-a balancing hole; 6-a rear mouth ring; 7-hub.
Detailed Description
The contents of the present invention will be further explained with reference to the drawings and examples.
Examples
As shown in fig. 1 and 2, a narrow flow passage closed impeller comprises a front cover plate 1 and an open impeller body;
as shown in fig. 4, the open impeller body has a schematic structural diagram, and comprises a back cover plate 3 and blades arranged on the front side plate surface of the back cover plate 3; a hub 7 for connecting a pump shaft is arranged in the center of the rear cover plate 3; the front cover plate 1 is fixedly butted with one surface of the open impeller body, on which the blades are arranged.
As shown in fig. 3, the front cover plate 1 is a schematic structural diagram, and a front opening ring 2 is arranged in the center of a front side plate surface of the front cover plate 1.
And a rear opening ring 6 is arranged on the outer ring of the hub 7 on the rear side plate surface of the rear cover plate 3.
And a balance hole is formed on the rear cover plate 3 between the hub 7 and the rear opening ring 6.
And a key groove for positioning the circumference of the pump shaft is processed on the inner wall surface of the hub 7.
The blades arranged on the front side plate surface of the rear cover plate 3 are arc-shaped blades or straight blades.
And corresponding positioning pin holes are formed in the front cover plate 1 and each blade of the open impeller body, after the front cover plate 1 and the open impeller body are positioned through the positioning pins 4, two ends of the positioning pins 4 are respectively welded with the front cover plate 1 and the open impeller body, and the fixation of the front cover plate 1 and the open impeller body is realized.
Claims (7)
1. A narrow flow passage closed impeller is characterized in that: comprises a front cover plate and an open impeller body; the open impeller body comprises a rear cover plate and blades arranged on the front side plate surface of the rear cover plate; a hub used for connecting a pump shaft is arranged in the center of the rear cover plate; the front cover plate is fixedly butted with one surface of the open impeller body, on which the blades are arranged.
2. The narrow flow channel shrouded impeller of claim 1 wherein: and a front opening ring is arranged in the center of the front side plate surface of the front cover plate.
3. The narrow flow channel shrouded impeller of claim 1 wherein: and a rear opening ring is arranged on the outer ring of the hub on the rear side plate surface of the rear cover plate.
4. A narrow flow path shrouded impeller as claimed in claim 3 wherein: and a balance hole is formed in the rear cover plate between the hub and the rear opening ring.
5. The narrow flow channel shrouded impeller of claim 1 wherein: and a key groove for positioning the circumference of the pump shaft is processed on the inner wall surface of the hub.
6. The narrow flow channel shrouded impeller of claim 1 wherein: the blades arranged on the front side plate surface of the rear cover plate are arc blades or straight blades.
7. The narrow flow channel shrouded impeller of claim 1 wherein: and after the front cover plate and the open impeller body are positioned by the positioning pins, two ends of the positioning pins are respectively welded with the front cover plate and the open impeller body, so that the fixation of the front cover plate and the open impeller body is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921831991.2U CN211314635U (en) | 2019-10-28 | 2019-10-28 | Closed impeller with narrow flow passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921831991.2U CN211314635U (en) | 2019-10-28 | 2019-10-28 | Closed impeller with narrow flow passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211314635U true CN211314635U (en) | 2020-08-21 |
Family
ID=72055242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921831991.2U Expired - Fee Related CN211314635U (en) | 2019-10-28 | 2019-10-28 | Closed impeller with narrow flow passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211314635U (en) |
-
2019
- 2019-10-28 CN CN201921831991.2U patent/CN211314635U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200821 Termination date: 20211028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |