CN208073858U - A kind of axial-flow pump flow guiding nut - Google Patents
A kind of axial-flow pump flow guiding nut Download PDFInfo
- Publication number
- CN208073858U CN208073858U CN201820276076.0U CN201820276076U CN208073858U CN 208073858 U CN208073858 U CN 208073858U CN 201820276076 U CN201820276076 U CN 201820276076U CN 208073858 U CN208073858 U CN 208073858U
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- flow guiding
- guiding nut
- axial
- flow
- impeller hub
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Abstract
The utility model flow guiding nut is set as bullet curved face, the curved surface of the sub warhead is evenly arranged with six spiral shape diversion trenches, the rotation direction of diversion trench is opposite with the thread rotary orientation of flow guiding nut, the thread rotary orientation of flow guiding nut screw thread is opposite with main axis direction, the water conservancy diversion amount for increasing liquid in axial-flow pump, improves the working efficiency of axial-flow pump;The contact surface of lock washer and impeller hub is set as the first plane, first plane surface is provided with spiral oil groove, oil groove depth is set as 1-2mm, axial-flow pump is at work, connection between flow guiding nut and main shaft is closer, reduce the friction between impeller hub and lock washer by the design of oil groove, to extend the service life of impeller hub.
Description
Technical field
The utility model belongs to axial-flow pump field, more particularly to a kind of axial-flow pump flow guiding nut.
Background technology
Axial-flow pump has the characteristics that flow is big, lift is low, be widely used in distruting water transregionally, agricultural irrigation and municipal administration to
The fields such as draining.Under design conditions, axial-flow pump flow condition is good, internal flow is stablized, and the hydraulic efficiency pumped at this time is higher
And it is stable.But under off-design behaviour when especially low flow rate condition, the change of impeller inlet inflow angle is not only drawn
It rises and generates flow separation at vacuum side of blade inlet side, also cause the increase of blade upper and lower surface pressure difference and clearance leakage of blade tip stream is promoted to increase
By force.Vacuum side of blade separation stream is with the flow direction of impeller blade-tip leakage flow and main flow direction on the contrary, impeller hub and locking nut
Between frictional force it is bigger, reduce the service life of impeller hub to a certain extent.
Invention content
The utility model provides a kind of axial-flow pump flow guiding nut, solves the above technical problem.
What the purpose of this utility model was realized in:A kind of axial-flow pump flow guiding nut, including main shaft, it is characterised in that:
The main shaft is locked with impeller hub by flow guiding nut, lock washer, and the impeller hub outer end is provided with impeller, institute
The impeller outer end stated is enclosed with blade wheel chamber, and the blade wheel chamber lower end has been bolted outer tube, in the outer tube
Gusset is provided with inner sleeve, the inner sleeve pipe internal surface is provided with the whirlpool plate that disappears;The flow guiding nut is set as bullet
Curved face, the curved surface of the sub warhead are evenly arranged with six spiral shape diversion trenches, the rotation direction of the diversion trench with
The thread rotary orientation of flow guiding nut is on the contrary, the thread rotary orientation of the flow guiding nut screw thread is opposite with main axis direction.
The impeller hub is set as bullet curved face corresponding with flow guiding nut, and the impeller hub lower end is set
It is equipped with spiral slot corresponding with the diversion trench of flow guiding nut.
The depth R of the diversion trench is set as 2 ~ 3mm.
The contact surface of the lock washer and impeller hub is set as the first plane, first plane surface setting
There are spiral oil groove, the oil groove depth to be set as 1-2mm.
The utility model flow guiding nut is set as bullet curved face, and the curved surface of the sub warhead is evenly arranged with six
Road spiral shape diversion trench, the rotation direction of diversion trench and the thread rotary orientation of flow guiding nut on the contrary, the thread rotary orientation of flow guiding nut screw thread with
Main axis direction on the contrary, increase axial-flow pump in liquid water conservancy diversion amount, improve the working efficiency of axial-flow pump;Lock washer and leaf
The contact surface of wheel wheel hub is set as the first plane, and first plane surface is provided with spiral oil groove, the setting of oil groove depth
For 1-2mm, at work, the connection between flow guiding nut and main shaft is closer for axial-flow pump, reduces impeller by the design of oil groove
Friction between wheel hub and lock washer, to extend the service life of impeller hub.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is flow guiding nut structural schematic diagram.
Fig. 3 is the first planar structure schematic diagram of lock washer.
In figure:1, flow guiding nut, 1-1, diversion trench, 1-2, screw thread, 2, main shaft, 3, impeller, 4, inner sleeve, 5, gusset, 6,
Disappear whirlpool plate, and 7, outer tube, 8, blade wheel chamber, 9, impeller hub, 10, lock washer, 10-1, the first plane, 10-2, oil groove.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings, but not as limitations of the present invention:
In the accompanying drawings:A kind of axial-flow pump flow guiding nut, including main shaft 2, it is characterised in that:The main shaft 2 passes through water conservancy diversion
Nut 1, lock washer 10 are locked with impeller hub 9, and 9 outer end of impeller hub is provided with impeller 3, outside the impeller 3
End is enclosed with blade wheel chamber 8, and 8 lower end of blade wheel chamber has been bolted outer tube 7, has passed through muscle in the outer tube 7
Plate 5 is provided with inner sleeve 4, and 4 inner surface of inner sleeve is provided with the whirlpool plate 6 that disappears;The flow guiding nut 1 is set as sub warhead
The curved surface of curved surface, the sub warhead is evenly arranged with six spiral shape diversion trench 1-1, the rotation of the diversion trench 1-1
To, thread rotary orientation and main shaft 2 rotation of the screw thread 1-2 of the flow guiding nut 1 oppositely oriented with the screw thread 1-2 of flow guiding nut 1
Direction is opposite.
The impeller hub 9 is set as bullet curved face corresponding with flow guiding nut 1, under the impeller hub 9
End is provided with spiral slot corresponding with the diversion trench 1-1 of flow guiding nut 1.
The depth R of the diversion trench 1-1 is set as 2 ~ 3mm.
The contact surface of the lock washer 10 and impeller hub 9 is set as the first plane 10-1, first plane
The surfaces 10-1 are provided with spiral oil groove 10-2, and the oil groove 10-2 depth is set as 1-2mm.
Above-described embodiment is only intended to clearly illustrate made by the utility model and describes, and not to the limit of embodiment
It is fixed, to those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or change, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation thus amplified out
Or among changing still in the scope of protection of the utility model.
Claims (4)
1. a kind of axial-flow pump flow guiding nut, including main shaft(2), it is characterised in that:The main shaft(2)Pass through flow guiding nut(1),
Lock washer(10)It is locked with impeller hub(9), the impeller hub(9)Outer end is provided with impeller(3), the impeller
(3)Outer end is enclosed with blade wheel chamber(8), the blade wheel chamber(8)Outer tube has been bolted in lower end(7), the housing
Pipe(7)Inside pass through gusset(5)It is provided with inner sleeve(4), the inner sleeve(4)Inner surface is provided with the whirlpool plate that disappears(6);Described
Flow guiding nut(1)It is set as bullet curved face, the curved surface of the sub warhead is evenly arranged with six spiral shape diversion trenches
(1-1), the diversion trench(1-1)Rotation direction and flow guiding nut(1)Screw thread(1-2)Oppositely oriented, described flow guiding nut
(1)Screw thread(1-2)Thread rotary orientation and main shaft(2)Rotation direction is opposite.
2. a kind of axial-flow pump flow guiding nut according to claim 1, it is characterised in that:The impeller hub(9)Setting
For with flow guiding nut(1)Corresponding bullet curved face, the impeller hub(9)Lower end is provided with and flow guiding nut(1)'s
Diversion trench(1-1)Corresponding spiral slot.
3. a kind of axial-flow pump flow guiding nut according to claim 1, it is characterised in that:The diversion trench(1-1)Depth
Degree R is set as 2 ~ 3mm.
4. a kind of axial-flow pump flow guiding nut according to claim 1, it is characterised in that:The lock washer(10)With leaf
Take turns wheel hub(9)Contact surface be set as the first plane(10-1), first plane(10-1)Surface is provided with spiral type oil
Slot(10-2), the oil groove(10-2)Depth is set as 1-2mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820276076.0U CN208073858U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump flow guiding nut |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201820276076.0U CN208073858U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump flow guiding nut |
Publications (1)
Publication Number | Publication Date |
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CN208073858U true CN208073858U (en) | 2018-11-09 |
Family
ID=64038329
Family Applications (1)
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CN201820276076.0U Active CN208073858U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump flow guiding nut |
Country Status (1)
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CN (1) | CN208073858U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
-
2018
- 2018-02-27 CN CN201820276076.0U patent/CN208073858U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111946670A (en) * | 2020-08-11 | 2020-11-17 | 绍兴华放新材料有限公司 | T-shaped resistance micropore multi-combination exhaust silencer |
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