CN207975023U - A kind of high efficiency tangent fire pumps - Google Patents
A kind of high efficiency tangent fire pumps Download PDFInfo
- Publication number
- CN207975023U CN207975023U CN201820156600.0U CN201820156600U CN207975023U CN 207975023 U CN207975023 U CN 207975023U CN 201820156600 U CN201820156600 U CN 201820156600U CN 207975023 U CN207975023 U CN 207975023U
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- impeller
- pump housing
- pumping chamber
- pump
- back shroud
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Abstract
The utility model is related to a kind of high efficiency tangent fire pumps, including the connected pump housing and pump cover, excessively stream part on the pump housing is by suction chamber, impeller, pumping chamber, diffuser forms, impeller is set in the pump housing, suction chamber is formed in the pump housing corresponding to the blade center space of impeller, impeller side forms spiral pumping chamber with pump housing inner wall, pumping chamber is connected to diffuser, wherein, impeller is back shroud half-opened impeller, the side of back shroud is contacted with the inner wall of pump cover, the side of back shroud and the inner wall of pump cover are embedded with impeller ring and casing wear ring respectively, pumping chamber separates impeller side flow equipped with cut water.The utility model has the advantage of：Using the spiral pressurized water chamber with cut water, efficiency is higher than conventional tangent fire pumps；Sealing ring is respectively set in pump cover and impeller, is acted on by sealing ring gap and impeller balance hole, effectively balances axial force, reduce the pressure that mechanical seal is born.
Description
Technical field
The utility model is related to pump technical fields, and in particular to a kind of high efficiency tangent fire pumps.
Background technology
Tangent fire pumps distinguishing feature is that flow-lift curve is very flat, and lift varies less within the scope of full flow, special
It is not the not superpressure in small flow, solves the problems, such as that pressure oscillation is greatly when the variation of fire water-supply flow in process.
Conventional tangent fire pumps are made of the pump housing, impeller, three major part of pump cover；Excessively stream part is by suction chamber, impeller, pressure water
Room, diffuser composition, are shown in Fig. 1 and Fig. 2,1 pump housing, 2 pump covers, 3 impellers, 4 suction chambers, 5 pumping chambers, 6 diffusers in figure.The pump housing is
Annular pumping chamber structure, impeller are open architecture, pump cover is no seal ring structure, and unshrouded impeller rotates in annular pumping chamber,
Only partially liq enters diffuser by tangential direction, and disadvantage is as follows：
1, gap is larger between impeller and pumping chamber, and partially liq rotates in annular pumping chamber, and loss is larger；
2, unshrouded impeller is big due to not having cover board, gap loss；
3, there are hydraulic losses without sealing ring for pump cover, and are unable to active balance axial force, and it is big that machine envelope bears pressure.
To sum up, the reason in structure causes conventional tangent fire pumps efficiency low, cannot meet energy-efficient requirement.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of high efficiency tangent fire pumps.
The purpose of this utility model can be realized by following technical proposals：A kind of high efficiency tangent fire pumps use
Spiral pumping chamber, casing wear ring, impeller ring and impeller balance hole design, including the connected pump housing and pump cover, pump
Excessively stream part on body is made of suction chamber, impeller, pumping chamber, diffuser, and impeller is set in the pump housing, the blade center of impeller
Form suction chamber in the pump housing corresponding to space, impeller side and pump housing inner wall form spiral pumping chamber, pumping chamber with
Diffuser is connected to, wherein impeller is back shroud half-opened impeller, is equipped with a circle impeller balance hole on impeller between two parties, back shroud
Side is contacted with the inner wall of pump cover, and the side of back shroud and the inner wall of pump cover are embedded with impeller ring and pump cover sealing respectively
Ring, pumping chamber separate impeller side flow equipped with cut water.
Compared with prior art, the utility model has the advantage of：
1, using the spiral pressurized water chamber with cut water, efficiency is apparently higher than conventional tangent fire pumps, meets energy-efficient
Demand for development；
2, sealing ring is respectively set in pump cover and impeller, is acted on by sealing ring gap and impeller balance hole, is effectively balanced
Axial force, reduces the pressure that mechanical seal is born.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the structural schematic diagram of prior art pumping chamber.
Fig. 3 is the structural schematic diagram of the utility model.
Fig. 4 is the structural schematic diagram of the utility model pumping chamber.
It is marked in figure as follows：
1 pump housing, 2 pump covers, 3 impellers, 4 suction chambers, 5 pumping chambers, 6 diffusers, 7 casing wear rings, 8 impeller rings, 9 every
Tongue, 10 impeller balance holes.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, those skilled in the art is made to become apparent from
How ground understanding puts into practice the utility model.Although describing the utility model in conjunction with its preferred embodiment, these
Embodiment only illustrates, rather than limits the scope of the utility model.
Referring to Fig. 3 and Fig. 4, a kind of high efficiency tangent fire pumps, including the connected pump housing 1 and pump cover 2, the mistake on the pump housing 1
Stream part is made of suction chamber 4, impeller 3, pumping chamber 5, diffuser 6, and impeller 3 is set in the pump housing 1, the blade center of impeller 3
Suction chamber 4 is formed in the pump housing 1 corresponding to space, 3 side of impeller forms spiral pumping chamber 5 with 1 inner wall of the pump housing, presses water
Room 5 is connected to diffuser 6, wherein impeller 3 is back shroud half-opened impeller 3, is equipped with a circle impeller balance hole on impeller 3 between two parties
10, the side of back shroud is contacted with the inner wall of pump cover 2, and the side of back shroud is embedded with impeller seals respectively with the inner wall of pump cover 2
Ring 8 and casing wear ring 7, pumping chamber 5 separate 3 side flow of impeller equipped with cut water 9.
The pump housing 1 uses spiral 5 structure of pumping chamber, and separates equipped with cut water 9, reduces hydraulic loss, spiral shape
Pumping chamber 5 than annular pumping chamber it is efficient；Back shroud half-opened impeller 3 reduces gap damage due to the presence of back shroud
It loses, it is more efficient than unshrouded impeller 3；Back shroud side is embedded with impeller ring 8, and 2 inner wall of pump cover is embedded with casing wear ring 7, reduces
Hydraulic loss, active balance axial force reduce the pressure that mechanical seal is born.
It should be pointed out that for the utility model through absolutely proving, can also have a variety of transformation and the implementation of remodeling
Scheme, it is not limited to the specific embodiment of the above embodiment.Above-described embodiment as just the utility model explanation, and
It is not limitations of the present invention.In short, the scope of protection of the utility model should be including those for ordinary skill
It obviously converts or substitutes and retrofit for personnel, and be determined by the appended claims.
Claims (1)
1. a kind of high efficiency tangent fire pumps, it is characterised in that using spiral pumping chamber, casing wear ring, impeller ring
And impeller balance hole design, including the connected pump housing and pump cover, the excessively stream part on the pump housing is by suction chamber, impeller, pumping chamber, expansion
Separate tube forms, and impeller is set in the pump housing, and suction chamber, impeller side are formed in the pump housing corresponding to the blade center space of impeller
Face forms spiral pumping chamber with pump housing inner wall, and pumping chamber is connected to diffuser, wherein impeller is back shroud semi-open type leaf
It takes turns, is equipped with a circle impeller balance hole on impeller between two parties, the side of back shroud is contacted with the inner wall of pump cover, the side of back shroud and pump
The inner wall of lid is embedded with impeller ring and casing wear ring respectively, and pumping chamber separates impeller side flow equipped with cut water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820156600.0U CN207975023U (en) | 2018-01-30 | 2018-01-30 | A kind of high efficiency tangent fire pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820156600.0U CN207975023U (en) | 2018-01-30 | 2018-01-30 | A kind of high efficiency tangent fire pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207975023U true CN207975023U (en) | 2018-10-16 |
Family
ID=63766461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820156600.0U Active CN207975023U (en) | 2018-01-30 | 2018-01-30 | A kind of high efficiency tangent fire pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207975023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201646U1 (en) * | 2018-12-17 | 2020-12-24 | Общество с ограниченной ответственностью "УНИМОД ГРУПП" | Fire pump |
-
2018
- 2018-01-30 CN CN201820156600.0U patent/CN207975023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201646U1 (en) * | 2018-12-17 | 2020-12-24 | Общество с ограниченной ответственностью "УНИМОД ГРУПП" | Fire pump |
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