CN204716622U - A kind of sewage pump - Google Patents
A kind of sewage pump Download PDFInfo
- Publication number
- CN204716622U CN204716622U CN201520286311.9U CN201520286311U CN204716622U CN 204716622 U CN204716622 U CN 204716622U CN 201520286311 U CN201520286311 U CN 201520286311U CN 204716622 U CN204716622 U CN 204716622U
- Authority
- CN
- China
- Prior art keywords
- spiral case
- arc surface
- impeller
- pump cover
- 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of sewage pump, comprise the pump housing, rotating shaft, impeller and pump cover, the pump housing comprises spiral case and front shroud, pump cover is connected with spiral case left surface, rotating shaft one end is connected with impeller, and impeller is arranged at spiral case inside, and front shroud is secured by bolts on spiral case inwall; Described pump cover forms an overcurrent cavity in a side of impeller outlet and spiral case between a side and impeller outlet of impeller outlet; Described spiral case is the first arc surface in the face of a side of impeller outlet, and described pump cover is the second arc surface in the face of a side of impeller outlet, and an end face circular arc of described first arc surface extends to the second arc surface; Described first arc surface becomes arc transition with the section transition position of the second arc surface.The utility model makes the flow-passing surface of spiral case and pump cover smooth, smooth-going, natural to greatest extent, effectively avoid because wetted surfaces irregularity causes wetted surfaces to occur the generation of the problem such as groove, bank, thus make flow field more unobstructed, smooth-going, decrease hydraulic loss.
Description
Technical field
The utility model relates to pump field, particularly a kind of sewage pump.
Background technique
Shown in Fig. 1 and Fig. 2, the convenience of pump cover 1 in order to cast and process of general mixed flow sewage pump, itself and spiral case 2 form an overall cavity position and are typically designed to simple horizontal plane 4; This pump cover structure makes the overcurrent cavity 3 between spiral case 2 and pump cover 1 define obvious groove and bank, make wetted surfaces not round and smooth, have impact on the unobstructed, smooth-going of flow field, easily cause waterpower whirlpool, pulsation and speed discontinuous, affect the hydraulic performance of pump, reduce the reliability of pump.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of sewage pump that a kind of structure is simple, drainage performance is good.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of sewage pump, comprise the pump housing, rotating shaft, impeller and pump cover, the pump housing comprises spiral case and front shroud, and pump cover is connected with spiral case left surface, and rotating shaft one end is connected with impeller, and impeller is arranged at spiral case inside, and front shroud is secured by bolts on spiral case inwall; Described pump cover forms an overcurrent cavity in a side of impeller outlet and spiral case between a side and impeller outlet of impeller outlet; Described spiral case is the first arc surface in the face of a side of impeller outlet, and described pump cover is the second arc surface in the face of a side of impeller outlet, and an end face circular arc of described first arc surface extends to the second arc surface; Described first arc surface becomes arc transition with the section transition position of the second arc surface.
In an embodiment of the present utility model, the radian of described second arc surface is greater than the radian of the first arc surface.
By technique scheme, the beneficial effects of the utility model are:
The utility model makes the flow-passing surface of spiral case and pump cover smooth, smooth-going, natural to greatest extent, effectively avoid because wetted surfaces irregularity causes wetted surfaces to occur the generation of the problem such as groove, bank, thus make flow field more unobstructed, smooth-going, decrease hydraulic loss.
The pump cover structure of the utility model sewage pump can meet the hydraulic performance requirement of sewage pump, turn improve the reliability of performance of sewage pump, effectively avoid because of pump cover and the uneven generation causing the problem of flow instability of spiral case each section transition, be conducive to the stable of performance of sewage pump.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is existing sewage pump structural representation;
Fig. 2 is the enlarged view of A in Fig. 1;
1, pump cover 2, spiral case 3, overcurrent cavity 4, horizontal plane
Fig. 3 is the utility model sewage pump structural representation;
Fig. 4 is the enlarged view of B in Fig. 3;
Numeral and the corresponding part title represented by letter in figure:
10, the pump housing 11, spiral case 12, front shroud 20, rotating shaft 30, impeller 31, impeller outlet 40, pump cover 50, overcurrent cavity 60, first arc surface 70, second arc surface.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Shown in Fig. 3 and Fig. 4, the utility model discloses a kind of sewage pump, comprise the pump housing 10, rotating shaft 20, impeller 30 and pump cover 40, the pump housing 10 comprises spiral case 11 and front shroud 12, pump cover 40 is connected with spiral case 11 left surface, rotating shaft 20 one end is connected with impeller 30, and it is inner that impeller 30 is arranged at spiral case 11, and front shroud 12 is secured by bolts on spiral case 11 inwall; Pump cover 40 forms an overcurrent cavity 50 in a side of impeller outlet 31 and spiral case 11 between a side and impeller outlet 31 of impeller outlet 31; Spiral case 11 is the first arc surface 60 in the face of a side of impeller outlet 31, and pump cover 40 is greater than the radian of the first arc surface 60 in the face of radian that a side of impeller outlet 31 is the second arc surface 70, second arc surface 70, which raises the patency of sewage; The mode that one end face of the first arc surface 60 adopts circular arc to extend extends to the second arc surface 70; First arc surface 60 becomes arc transition with the section transition position of the second arc surface 70, see on the whole, first arc surface 60 and that is as a whole arc surface of the second arc surface 70, make overcurrent housing surface smooth, smooth-going, natural to greatest extent like this, effectively avoid because overcurrent housing surface irregularity causes overcurrent housing surface to occur the generation of the problem such as groove, bank, thus make flow field more unobstructed, smooth-going, decrease hydraulic loss.
The utility model pump cover structure is when designing, pump cover and scroll casing shape become the wetted surfaces of cavity need design in strict accordance with the prolongation value of the corresponding each section circular arc of spiral case, according to assembly structure requirement, extend the center of circle X of circular arc, the coordinate value of Y-direction need be accurate, errorless.
The pump cover structure of the utility model sewage pump can meet the hydraulic performance requirement of sewage pump, turn improve the reliability of performance of sewage pump, effectively avoid because of pump cover and the uneven generation causing the problem of flow instability of spiral case each section transition, be conducive to the stable of performance of sewage pump.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. a sewage pump, comprises the pump housing, rotating shaft, impeller and pump cover, and the pump housing comprises spiral case and front shroud, and pump cover is connected with spiral case left surface, and rotating shaft one end is connected with impeller, and impeller is arranged at spiral case inside, and front shroud is secured by bolts on spiral case inwall; It is characterized in that, described pump cover forms an overcurrent cavity in a side of impeller outlet and spiral case between a side and impeller outlet of impeller outlet; Described spiral case is the first arc surface in the face of a side of impeller outlet, and described pump cover is the second arc surface in the face of a side of impeller outlet, and an end face circular arc of described first arc surface extends to the second arc surface; Described first arc surface becomes arc transition with the section transition position of the second arc surface.
2. a kind of sewage pump according to claim 1, is characterized in that: the radian of described second arc surface is greater than the radian of the first arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286311.9U CN204716622U (en) | 2015-05-04 | 2015-05-04 | A kind of sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286311.9U CN204716622U (en) | 2015-05-04 | 2015-05-04 | A kind of sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716622U true CN204716622U (en) | 2015-10-21 |
Family
ID=54315624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520286311.9U Expired - Fee Related CN204716622U (en) | 2015-05-04 | 2015-05-04 | A kind of sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257557A (en) * | 2015-11-25 | 2016-01-20 | 湘潭金阳电机泵业有限公司 | Efficient low-lift submersible sewage pump |
-
2015
- 2015-05-04 CN CN201520286311.9U patent/CN204716622U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257557A (en) * | 2015-11-25 | 2016-01-20 | 湘潭金阳电机泵业有限公司 | Efficient low-lift submersible sewage pump |
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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: 20151021 Termination date: 20160504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |