CN208073857U - A kind of axial-flow pump locking nut - Google Patents
A kind of axial-flow pump locking nut Download PDFInfo
- Publication number
- CN208073857U CN208073857U CN201820271872.5U CN201820271872U CN208073857U CN 208073857 U CN208073857 U CN 208073857U CN 201820271872 U CN201820271872 U CN 201820271872U CN 208073857 U CN208073857 U CN 208073857U
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- CN
- China
- Prior art keywords
- locking nut
- washer
- main shaft
- axial
- pad
- 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.)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The nut cap of the utility model is connect with anti-corrosive cover using petal surface blending, bead outer surface is provided with seal groove, sealing ring is provided in the seal groove closely to connect with anti-corrosive cover, improve the rotation efficiency that nut cap follows anti-corrosive cover, the frictional force loss for reducing nut cap rotation, to improve the service life of nut cap；Locking nut pad and main shaft by flat key, be bolted and be integrated, the locking nut pad is provided in round, in the circle multiple minor thread holes are evenly distributed with centered on a major thread hole, the minor thread hole is set as counter sink, ensure bolt and main shaft bonding strength, to ensure impeller hub and main shaft rotation stability.
Description
Technical field
The utility model belongs to shurry pump field, more particularly to a kind of axial-flow pump locking nut.
Background technology
Axial-flow pump belongs to low lift, big flow type pump, simple in structure, easy to use, is mainly used for farmland discharging-irrigating, it is also possible to
Recirculated water, dock lifting water level etc. are conveyed in urban water supply and drainage, thermo-power station.Hydraulic model of axial-flow pump is studied, is to develop me
The basis of state's low lift irrigation and drainage cause.In order to improve the performance of axial-flow pump, and provided first to the engineerings such as irrigation Large Axial Flow Pump
Into hydraulic model, but so far, the country there is no that inflow-rate of water turbine is big, efficient, anti-cavitation performance is good, good manufacturability axial-flow pump
Model.
Invention content
The utility model provides a kind of readily removable removing nut of axial-flow pump, solves the above technical problem.
What the purpose of this utility model was realized in：A kind of axial-flow pump locking nut, including impeller hub, feature exists
In：The impeller hub outer end is enclosed with anti-corrosive cover, and the impeller hub is wrapped in main shaft outer end, in the anti-corrosive cover
It is provided with nut cap and locking nut pad, bolt is provided in the nut cap and is connect with main shaft across locking nut pad；Institute
The nut cap stated includes the hollow cap that washer and protecgulum form, and the washer is set as petal curve, and the washer is left
Side is provided with protecgulum, and the left end of the protecgulum is provided with rounded corner, turret head is provided on the right side of the rounded corner；Described
Locking nut pad and main shaft by flat key, be bolted and be integrated, the locking nut pad is provided in round, the circle
Multiple minor thread holes are evenly distributed with centered on interior major thread hole, the minor thread hole is set as counter sink.
The bead outer surface is provided with seal groove, and sealing ring is provided in the seal groove and is closely connected with anti-corrosive cover
It connects, the washer includes curved surface, and the curved surface and anti-corrosive cover are set as clearance fit, and the anti-corrosive cover and curved surface connect
Contacting surface is set as petal curved surface.
The locking nut pad is provided with the keyway to match with flat key.
It is provided with the first inner surface in the washer, the boss of first inner surface and bolt is provided with gap,
The thickness H of the washer is more than the thickness D of bolt boss, and the left end of the bolt is not contacted with nut cap.
The nut cap of the utility model is connect with anti-corrosive cover using petal surface blending, and bead outer surface is provided with sealing
Slot is provided with sealing ring in the seal groove and is closely connect with anti-corrosive cover, improves the rotation efficiency that nut cap follows anti-corrosive cover,
The frictional force loss for reducing nut cap rotation, to improve the service life of nut cap；Locking nut pad and main shaft by flat key,
It is bolted and is integrated, the locking nut pad is provided in round, and is uniformly divided centered on a major thread hole in the circle
Multiple minor thread holes are furnished with, the minor thread hole is set as counter sink, ensures the bonding strength of bolt and main shaft, to ensure
The stability of the rotation of impeller hub and main shaft.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is nut cap structural schematic diagram.
Fig. 3 is the A-A sectional views of Fig. 2.
Fig. 4 is the structural schematic diagram of locking nut pad.
In figure：1, locking nut pad, 2, nut cap, 3, bolt, 4, anti-corrosive cover, 5, impeller hub, 6, main shaft, 7, flat key,
2-1, washer, 2-11, seal groove, 2-12, curved surface, 2-13,2-2, protecgulum, 2-21, rounded corner, 2-22, turret head, 1-1, small spiral shell
Pit, 1-2, major thread hole, 1-3, keyway.
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 locking nut, including impeller hub 5, it is characterised in that：The impeller hub 5
Outer end is enclosed with anti-corrosive cover 4, and the impeller hub 5 is wrapped in 6 outer end of main shaft, nut cap 2 is provided in the anti-corrosive cover 4
With locking nut pad 1, bolt 3 is provided in the nut cap 2 and is connect with main shaft 6 across locking nut pad 1；The nut
Lid 2 includes the hollow cap of washer 2-1 and protecgulum 2-2 compositions, and the washer 2-1 is set as petal curve, the washer
The left end that protecgulum 2-2, the protecgulum 2-2 are provided on the left of 2-1 is provided on the right side of rounded corner 2-21, the rounded corner 2-21
It is provided with turret head 2-22；The locking nut pad 1 and main shaft 6 by flat key 7, be bolted and be integrated, the locking
Nut pad 1 is provided in round, and multiple minor thread hole 1-1, institute are evenly distributed with centered on a major thread hole 1-2 in the circle
The minor thread hole 1-1 stated is set as counter sink, ensures the bonding strength of bolt 3 and main shaft, to ensure impeller hub and main shaft
Rotation stability.
The outer surfaces washer 2-1 be provided in seal groove 2-11, the seal groove 2-11 be provided with sealing ring with
Anti-corrosive cover 4 closely connects, and the washer 2-1 includes curved surface 2-12, and the curved surface 2-12 is set as gap with anti-corrosive cover 4 and matches
It closes, the contact surface of the anti-corrosive cover 4 and curved surface 2-12 is set as petal curved surface.
The locking nut pad 1 is provided with the keyway 1-3 to match with flat key 7.
The first inner surface 2-13, the boss of the first inner surface 2-13 and bolt 3 are provided in the washer 2-1
Be provided with gap, the thickness H of the washer 2-1 is more than the thickness D of 3 boss of bolt, the left end of the bolt 3 not with spiral shell
Female lid 2 contacts, and nut cap 2 is effectively protected bolt 3.
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 locking nut, including impeller hub（5）, it is characterised in that：The impeller hub（5）It wraps up outer end
There is anti-corrosive cover（4）, the impeller hub（5）It is wrapped in main shaft（6）Outer end, the anti-corrosive cover（4）Inside it is provided with nut cap
（2）With locking nut pad（1）, the nut cap（2）Inside it is provided with bolt（3）Across locking nut pad（1）With main shaft（6）Even
It connects；The nut cap（2）Including washer（2-1）And protecgulum（2-2）The hollow cap of composition, the washer（2-1）It is set as
Petal curve, the washer（2-1）Left side is provided with protecgulum（2-2）, the protecgulum（2-2）Left end be provided with rounding
Angle（2-21）, the rounded corner（2-21）Right side is provided with turret head（2-22）；The locking nut pad（1）With main shaft
（6）Pass through flat key（7）, be bolted and be integrated, the locking nut pad（1）It is provided in round, one is big in the circle
Threaded hole（1-2）Centered on be evenly distributed with multiple minor thread holes（1-1）, the minor thread hole（1-1）It is set as counter sink.
2. a kind of axial-flow pump locking nut according to claim 1, it is characterised in that：The washer（2-1）Outer surface
It is provided with seal groove（2-11）, the seal groove（2-11）Inside it is provided with sealing ring and anti-corrosive cover（4）Close connection, it is described
Washer（2-1）Including curved surface（2-12）, the curved surface（2-12）With anti-corrosive cover（4）It is set as clearance fit, the anti-corrosion
Set（4）With curved surface（2-12）Contact surface be set as petal curved surface.
3. a kind of axial-flow pump locking nut according to claim 1, it is characterised in that：The locking nut pad（1）If
It is equipped with and flat key（7）The keyway to match（1-3）.
4. a kind of axial-flow pump locking nut according to claim 1, it is characterised in that：The washer（2-1）Interior setting
There is the first inner surface（2-13）, first inner surface（2-13）With bolt（3）Boss be provided with gap, the washer
（2-1）Thickness H be more than bolt（3）The thickness D of boss, the bolt（3）Left end not with nut cap（2）Contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271872.5U CN208073857U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271872.5U CN208073857U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208073857U true CN208073857U (en) | 2018-11-09 |
Family
ID=64039219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820271872.5U Active CN208073857U (en) | 2018-02-27 | 2018-02-27 | A kind of axial-flow pump locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208073857U (en) |
-
2018
- 2018-02-27 CN CN201820271872.5U patent/CN208073857U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |