CN206770268U - A kind of semi-open centrifugal impeller with splitterr vanes - Google Patents
A kind of semi-open centrifugal impeller with splitterr vanes Download PDFInfo
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- CN206770268U CN206770268U CN201720485286.6U CN201720485286U CN206770268U CN 206770268 U CN206770268 U CN 206770268U CN 201720485286 U CN201720485286 U CN 201720485286U CN 206770268 U CN206770268 U CN 206770268U
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- linear leaf
- centrifugal impeller
- semi
- short blade
- linear
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Abstract
The utility model discloses a kind of semi-open centrifugal impeller with splitterr vanes.The utility model includes back shroud, linear leaf and short blade；And linear leaf and short blade and back shroud are integral type structure；Its section molded line of linear leaf is cylinder, and is smoothly connected for two sections of circular arcs；Short blade is placed between two linear leafs, and its number is equal with the number of linear leaf；Multiple different size of holes are opened up in the end of linear leaf, keyway is opened up with the equal numbers of balance pipe of linear leaf, the side of centre bore offering near the centre bore, are easy to being fastenedly connected for centrifugal impeller and external drive shaft.The utility model can effectively suppress the separation of flow stall event in semi-open centrifugal impeller exit, reduce flow losses, so as to effectively improve flow stream pressure, finally improve transfer efficiency.
Description
Technical field
A kind of semi-open centrifugal impeller with splitterr vanes is the utility model is related to, it is specifically a kind of that there is length leaf
The semi-open centrifugal impeller of piece and back shroud, while further eliminate impeller by setting up different size of hole on linear leaf
Export the novel centrifugal impeller of separation of flow stall event.
Background technology
With China's economic development, pollution of river getting worse, it is therefore desirable to periodically clear up riverway sludge.In the past
Generally use manual cleaning mode, this mode cycle are very long.Especially as the constantly soaring of human cost, cleaning up cost is more
It is that linear upward trend is presented.In order to reduce cost, shorten cleaning cycle, realize the clear of river course by means of sewage pump extensively at present
Become silted up and administer.Active rotation flow passage components in sewage pump --- impeller is core component.
Semi-open centrifugal pump impeller can be used to because it does not have front shroud, only back shroud, anti-clogging better performances
Convey the solid-liquid two-phase flow containing certain granules concentration.But semi-open centrifugal impeller complete convey solid-liquid two-phase flow while,
The low problem of transfer efficiency also be present.To find out its cause, the separation of flow phenomenon of mainly half-opened impeller is extremely serious, especially impeller
Outlet port.Based on this, the utility model proposes a kind of new semi-open centrifugal impeller, can effectively solve the above problems.
The content of the invention
The utility model shunts in view of the above-mentioned problems, proposing a kind of band that can effectively control impeller outlet separation of flow phenomenon
The semi-open centrifugal impeller of blade.The utility model is related to two aspects altogether：On the one hand it is the addition point between two linear leafs
Blade, i.e. short blade are flowed, is on the other hand to set up certain amount, hole of different sizes in linear leaf terminal position.
Technical scheme is as follows used by the utility model solves its technical problem：
A kind of semi-open centrifugal impeller with splitterr vanes, including back shroud, linear leaf and short blade；And linear leaf and short
Blade and back shroud are integral type structure；Its section molded line of linear leaf is cylinder, and is smoothly connected for two sections of circular arcs；Short blade
It is placed between two linear leafs, its number is equal with the number of linear leaf；Opened up in the end of linear leaf multiple different size of
Hole, keyway is opened up with the equal numbers of balance pipe of linear leaf, the side of centre bore offering near the centre bore, be easy to from
Lobus cardiacus wheel is fastenedly connected with external drive shaft.
Preferably：The start radius of short blade is the half of semi-open centrifugal impeller radius.
Preferably：The set location of balance pipe is produced closer to the suction surface of linear leaf when can effectively eliminate impeller operation
Raw part axial force.
Preferably：Short blade is placed in the centre position of two linear leafs.
Preferably：Short blade entrance carries out surface smooth treatment to short blade, and linear leaf is entered in linear leaf entrance
Mouth has carried out skiving processing.
Preferably：The end of linear leaf offers three different size of holes：Macropore, mesopore and aperture, closer to end,
The Kong Yue great opened up.
It is of the present utility model to have technical effect that：
By the short blade of certain amount is set up in semi-open centrifugal impeller and set up on linear leaf certain amount,
Liquid flow hole of different sizes, it can effectively suppress the separation of flow stall event in semi-open centrifugal impeller exit, reduce flow losses,
So as to effectively improve flow stream pressure, transfer efficiency is finally improved.
Brief description of the drawings
Fig. 1 is semi-open centrifugal impeller overall structure figure；
Fig. 2 is semi-open centrifugal impeller side back sight figure.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
In Fig. 1~Fig. 2, including back shroud 1, linear leaf 2, short blade 3, macropore 4, mesopore 5, aperture 6, balance pipe 7, center
Hole 8 and keyway 9.Linear leaf 2 and short blade 3 and back shroud 1 are integral type structure, can carry out the works such as turning, milling by lathe
Sequence completes processing；Material is usually No. 45 steel, but is not limited to No. 45 steel, or Q235 steel.Linear leaf 2 and short blade 3
It can also be completed with back shroud 1 by welding sequence, i.e., back shroud 1, linear leaf 2 and short blade 3 completed by lathe respectively
Processing, then combined together by welding.When short blade 3 is added between two linear leafs 2, the start radius of short blade 3 is
The half of semi-open centrifugal impeller radius, it can be also adjusted according to actual conditions；Short blade is positioned at the centre of two linear leafs 2
Position, appropriate biasing adjustment can be also carried out according to actual conditions.The number of short blade 3 is generally consistent with the number of linear leaf 2,
It can be adjusted according to actual conditions.In the entrance of short blade 3, to eliminate liquid flow impact, it is necessary to carry out surface light to short blade 3
Sliding processing.In the entrance of linear leaf 2, in order to eliminate exclusion phenomenon, skiving processing has been carried out to the import of linear leaf 2.By setting up
Short blade 3, the separation of flow phenomenon at impeller outlet is suppressed, while short blade 3 can also be realized and liquid stream is done work, and add
Flow stream pressure.The suction surface pressure of linear leaf 2 is usually less than pressure surface pressure, therefore when runner is broad, the separation of flow usually occurs
Phenomenon., can also be by setting up three holes of different sizes, the number in hole on linear leaf 2 in order to preferably suppress separation of flow phenomenon
It can be adjusted according to actual conditions.In this way, the high-pressure fluid of pressure surface side will flow to the low-pressure fluid of suction surface side, to inhaling
The low-pressure fluid of power surface side plays good energy supplement effect, so as to inhibit the generation of separation of flow phenomenon, so as to improve liquid
The pressure of stream.Three different size of holes, macropore 4, mesopore 5 and aperture 6 are opened up in the end of linear leaf 2.Close to centre bore 8
Near, balance pipe 7 equal numbers of with linear leaf 2 is opened up, and balance pipe 7 is closer to the suction surface of linear leaf 2；Balance pipe
7 setting can effectively eliminate part axial force caused by impeller operation, so as to improve impeller service life.Centre bore 8
Side opens up keyway 9, is easy to being fastenedly connected for centrifugal impeller and external drive shaft.
The suction surface pressure of linear leaf is usually less than pressure surface pressure, therefore when runner is broad, the separation of flow usually occurs and show
As., can also be by setting up three holes of different sizes on linear leaf in order to preferably suppress separation of flow phenomenon, the number in hole can root
It is adjusted according to actual conditions.In this way, the high-pressure fluid of pressure surface side will flow to the low-pressure fluid of suction surface side, to suction surface
The low-pressure fluid of side plays good energy supplement effect, so as to inhibit the generation of separation of flow phenomenon, so as to improve liquid stream
Pressure.
Claims (6)
1. a kind of semi-open centrifugal impeller with splitterr vanes, it is characterised in that including back shroud (1), linear leaf (2) and short leaf
Piece (3)；And linear leaf (2) and short blade (3) and back shroud (1) are integral type structure；Its section molded line of linear leaf (2) is cylinder
Shape, and be smoothly connected for two sections of circular arcs；Short blade (3) is placed between two linear leafs (2), its number and the number of linear leaf (2)
Mesh is equal；Multiple different size of holes are opened up in the end of linear leaf (2), is nearby offering and is coming into leaves close to centre bore (8)
Piece (2) equal numbers of balance pipe (7), the side of centre bore (8) open up keyway (9), are easy to centrifugal impeller and external drive shaft
Be fastenedly connected.
2. a kind of semi-open centrifugal impeller with splitterr vanes according to claim 1, it is characterised in that short blade (3)
Start radius is the half of semi-open centrifugal impeller radius.
3. a kind of semi-open centrifugal impeller with splitterr vanes according to claim 1, it is characterised in that balance pipe (7)
Set location can effectively eliminate part axial force caused by impeller operation closer to the suction surface of linear leaf (2).
4. a kind of semi-open centrifugal impeller with splitterr vanes according to claim 1, it is characterised in that short blade (3) is put
In the centre position of two linear leafs (2).
5. a kind of semi-open centrifugal impeller with splitterr vanes according to claim 1, it is characterised in that in short blade (3)
Entrance carries out surface smooth treatment to short blade, and linear leaf (2) import has been carried out at skiving in linear leaf (2) entrance
Reason.
6. a kind of semi-open centrifugal impeller with splitterr vanes according to claim 1, it is characterised in that in linear leaf (2)
End offer three different size of holes：Macropore (4), mesopore (5) and aperture (6), closer to end, the Kong Yue opened up
Greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485286.6U CN206770268U (en) | 2017-05-04 | 2017-05-04 | A kind of semi-open centrifugal impeller with splitterr vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485286.6U CN206770268U (en) | 2017-05-04 | 2017-05-04 | A kind of semi-open centrifugal impeller with splitterr vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206770268U true CN206770268U (en) | 2017-12-19 |
Family
ID=60648926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720485286.6U Expired - Fee Related CN206770268U (en) | 2017-05-04 | 2017-05-04 | A kind of semi-open centrifugal impeller with splitterr vanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206770268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404711A (en) * | 2018-05-23 | 2018-08-17 | 江苏大学 | A kind of Fermat spiral surface Agitator Impeller |
-
2017
- 2017-05-04 CN CN201720485286.6U patent/CN206770268U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404711A (en) * | 2018-05-23 | 2018-08-17 | 江苏大学 | A kind of Fermat spiral surface Agitator Impeller |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20180504 |