CN205423300U - Fire control dredge pump impeller - Google Patents
Fire control dredge pump impeller Download PDFInfo
- Publication number
- CN205423300U CN205423300U CN201620139999.2U CN201620139999U CN205423300U CN 205423300 U CN205423300 U CN 205423300U CN 201620139999 U CN201620139999 U CN 201620139999U CN 205423300 U CN205423300 U CN 205423300U
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- China
- Prior art keywords
- shroud
- back shroud
- front shroud
- blade
- wheel hub
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- Expired - Fee Related
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Abstract
The utility model discloses a fire control dredge pump impeller, it includes wheel hub, the front shroud, back shroud and blades's vane wheel, the front shroud, the back shroud is circularly, front shroud middle part shaping has the axial import, the back shroud is even as an organic whole with wheel hub, the front shroud, the shaping has the radial channel who communicates with the axial import between the back shroud, the blade is equidistant radial range and its free end extends to radial channel's export department, blade width direction's a side is even as an organic whole with the back shroud, another side of blade width direction is even as an organic whole with the front shroud, the blade comprises straight section and arcuation section respectively, straight section extending direction is 90 with the tangential contained angle of vane wheel excircle, the beneficial effects are that: this kind of design had not only done the lift of dredge pump high, but also can reach the blowdown purpose, and the flow head curve of water pump is a straight line basically simultaneously, and outlet pressure is undulant very little, satisfies the acceptance requirement of fire control standard.
Description
Technical field
This utility model relates to blowdown pump impeller technical field, is specially a kind of fire-fighting blowdown pump impeller.
Background technology
Existing blowdown pump impeller typically uses dual channel or single channel structure, apply and be not easily blocked at field of sewage impeller, pollution discharge capability is extremely strong, but weak point is lift low (being generally not more than 50 meters), fire-fighting domain typically requires that pump lift is higher, is now difficult to choose suitable water pump during the type selecting of pump.Force reconstruction of pump house, to reach application target, the most just bring unnecessary use cost and time that reconstruction of pump house is wasted.
The problem that the above-mentioned technical staff of being needs to solve.
Summary of the invention
For drawbacks described above, the purpose of this utility model is to provide a kind of fire-fighting blowdown pump impeller, to solve the problem that tradition dredge pump cann't be solved.
For achieving the above object, this utility model have employed following technical scheme:
nullA kind of fire-fighting blowdown pump impeller，It includes by wheel hub (41)、Front shroud (42)、The impeller body (4) that back shroud (43) and blade (44) form，Described front shroud (42)、The cross section of back shroud (43) is circle，Described front shroud (42) middle part forms axial inlet (421)，Described back shroud (43) is connected as a single entity with wheel hub (41)，Described front shroud (42)、The radial passage connected with axial inlet (421) is formed between back shroud (43)，Described blade (44) is the center of circle equally radial arrangement and the export department's extension to radial passage of its free end with wheel hub (41) axis，One side of described blade (44) width is connected as a single entity with back shroud (43)，Another side of described blade (44) width and front shroud even (42) are integrated；
Wherein, described blade (44) is respectively by being located at the flat segments (441) of radial passage export department and being connected the arcuation section (442) extended to radial passage import department with flat segments (441) and form, and the angle (A) of described flat segments (441) bearing of trend and impeller body (4) cylindrical tangent line is 90 °.
Further, the oral area of described axial inlet (421) is provided with preoral loop (45), is provided with the rear choma (46) coaxial with preoral loop (45) in the back side of back shroud (43).
This practicality provides the benefit that: the angle that blade design becomes import department to be divided into distortion formula, exit portion is straight formula and exit blade and impeller body cylindrical tangent line is 90 °, this design not only done blowdown pump lift high, but also can reach blowdown purpose, the flow lift curve of water pump is substantially straight line simultaneously, outlet pressure pulsations is the least, meets fire protection criteria acceptance requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fire-fighting blowdown pump impeller in embodiment；
Fig. 2 be in embodiment a kind of fire-fighting blowdown pump impeller install in place after structural representation.
Detailed description of the invention
In order to make the technological means of this practicality, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with being specifically illustrating, this practicality is expanded on further.
See Fig. 1-2, a kind of fire-fighting blowdown pump impeller, it includes wheel hub 41, front shroud 42, back shroud 43 and the impeller body 4 of blade 44 composition, front shroud 41, the cross section of back shroud 43 is circle, axial inlet 421 is formed in the middle part of front shroud 42, back shroud 43 is connected as a single entity with wheel hub 41, front shroud 42, the radial passage connected with axial inlet 421 is formed between back shroud 43, blade 44 is equally radial arrangement and its free end export department's extension to radial passage with wheel hub 41 axis for the center of circle, one side of blade 44 width is connected as a single entity with back shroud 43, another side of blade 44 width is connected as a single entity with front shroud 42；Wherein, blade 44 is respectively by being located at the flat segments 441 of radial passage export department and being connected the arcuation section 442 extended to radial passage import department with flat segments 441 and form, flat segments 441 bearing of trend is 90 ° with the included angle A of impeller body 4 cylindrical tangent line, blade 44 is designed to import department and is divided into distortion formula, the angle of formula that exit portion is straight and exit blade and impeller body 4 cylindrical tangent line is 90 °, blowdown pump lift has both been done in this design high, blowdown purpose can be reached again, the flow lift curve of water pump is substantially straight line simultaneously, outlet pressure pulsations is the least, meet fire protection criteria acceptance requirement.
In order to coordinate installation, as it is shown in figure 1, the oral area of axial inlet 421 is provided with preoral loop 45, it is provided with the rear choma 46 coaxial with preoral loop 45 in the back side of back shroud 43.
nullThe mounting structure of impeller body is described further below,See Fig. 2，Fire-fighting dredge pump structure includes motor 1、Grease chamber 2、Pump cover 3、Impeller 4、The pump housing 5、Base 6，The pump housing 5 is formed with inducer、Outlet section and impeller installation cavity，Base 6、The pump housing 5、Pump cover 3、Grease chamber 2 and motor 1 pass sequentially through bolt compact siro spinning technology from bottom to top，The outfan of motor 1 main shaft is connected by shaft coupling pump shaft 9，Pump shaft 9 is along the axially extending of grease chamber 2 and is formed with the free end extended in the pump housing 5 installation cavity，Pump shaft 9 in grease chamber 2 is provided with mechanical seal 7，The wheel hub 41 of impeller 4 is accessed by the axle head of pump shaft free end and is fixed by impeller nut 8 and flat key structure，It is located in the holding groove that the preoral loop 45 of axial inlet 421 oral area accesses base 6，The rear choma 46 at the back side being located at back shroud 43 is connected with pump cover 3.
The foregoing is only the preferred implementation of this practicality; the protection domain of this practicality is not limited in above-mentioned embodiment; every technical scheme belonging to this practical principle belongs to the protection domain of this practicality; for a person skilled in the art; the some improvement carried out on the premise of without departing from the principle of this practicality, these improve the protection domain that also should be regarded as this practicality.
Claims (2)
- null1. a fire-fighting blowdown pump impeller，It includes by wheel hub (41)、Front shroud (42)、The impeller body (4) that back shroud (43) and blade (44) form，It is characterized in that，Described front shroud (42)、The cross section of back shroud (43) is circle，Described front shroud (42) middle part forms axial inlet (421)，Described back shroud (43) is connected as a single entity with wheel hub (41)，Described front shroud (42)、The radial passage connected with axial inlet (421) is formed between back shroud (43)，Described blade (44) is the center of circle equally radial arrangement and the export department's extension to radial passage of its free end with wheel hub (41) axis，One side of described blade (44) width is connected as a single entity with back shroud (43)，Another side of described blade (44) width is connected as a single entity with front shroud (42)；Wherein, described blade (44) is respectively by being located at the flat segments (441) of radial passage export department and being connected the arcuation section (442) extended to radial passage import department with flat segments (441) and form, and the angle (A) of described flat segments (441) bearing of trend and impeller body (4) cylindrical tangent line is 90 °.
- A kind of fire-fighting blowdown pump impeller the most according to claim 1, it is characterized in that, the oral area of described axial inlet (421) is provided with preoral loop (45), is provided with the rear choma (46) coaxial with preoral loop (45) in the back side of back shroud (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139999.2U CN205423300U (en) | 2016-02-25 | 2016-02-25 | Fire control dredge pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139999.2U CN205423300U (en) | 2016-02-25 | 2016-02-25 | Fire control dredge pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423300U true CN205423300U (en) | 2016-08-03 |
Family
ID=56545144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620139999.2U Expired - Fee Related CN205423300U (en) | 2016-02-25 | 2016-02-25 | Fire control dredge pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997904A (en) * | 2020-08-15 | 2020-11-27 | 西南石油大学 | Novel discontinuous multistage composite blade disc pump |
-
2016
- 2016-02-25 CN CN201620139999.2U patent/CN205423300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997904A (en) * | 2020-08-15 | 2020-11-27 | 西南石油大学 | Novel discontinuous multistage composite blade disc 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |