CN206386299U - A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device - Google Patents
A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device Download PDFInfo
- Publication number
- CN206386299U CN206386299U CN201621468663.7U CN201621468663U CN206386299U CN 206386299 U CN206386299 U CN 206386299U CN 201621468663 U CN201621468663 U CN 201621468663U CN 206386299 U CN206386299 U CN 206386299U
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- China
- Prior art keywords
- locking nut
- pump
- open type
- positioning device
- axial direction
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- Expired - Fee Related
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Abstract
The utility model relates to field of fluid machinery, more particularly to a kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device, and mainly solving existing positioner makes axle intensity decreases, and axial gap can not lean on the problem of itself regulation is compensated.Horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device includes locking nut and key, the locking nut is arranged on the outside of impeller, pump shaft both sides are provided with the different external screw thread of rotation direction, the locking nut is threadedly coupled with pump shaft, locking nut end face is provided with circumferential uniform multiple grooves, it is provided with locating slot on pump shaft, key is arranged in locking nut groove and pump shaft locating slot, the setting of key is to prevent locking nut from loosening.The device is mainly used in the axially position of water pump.
Description
Technical field
The utility model relates to field of fluid machinery, is filled more particularly to a kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axially position
Put.
Background technology
Horizontal center-opening type multi-stage pump housing after clearance between guide vanes at different levels assembling with forming flow passage structure, similar to Scroll runner
Housing, existing Scroll horizontal space multi-stage centrifugal pump axial thrust balancing devices is mainly that impeller uses back-to-back installation side
Formula balancing axial thrust, locating and machining groove individually fixes impeller on the pump shaft for installing each impeller, and each impeller is individually positioned,
Such a mode greatly reduces the intensity of axle for multistage pump.In addition, the axial gap of water pump can not lean on itself regulation to mend
Repay, versatility is poor, practical function is not good.
Utility model content
Make axle intensity decreases to solve existing positioner, and axial gap can not lean on the problem of itself regulation is compensated,
The utility model provides a kind of in the case where not reducing the strength conditions of axle, the horizontal middle open type multistage of freely adjustable axial gap
Centrifugal pump axial direction positioning device.
The technical scheme that the utility model solves the above problems is：A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axially position dress
Put, it includes locking nut and key, the locking nut is arranged on the outside of impeller, and pump shaft both sides are provided with the different outer spiral shell of rotation direction
Line, the locking nut is threadedly coupled with pump shaft, and locking nut end face is provided with circumferential uniform multiple grooves, pump shaft and set
There is a locating slot, key is arranged in locking nut groove and pump shaft locating slot, the setting of key is to prevent locking nut from loosening.
In order to protect screw thread not worn and torn by the impurity in medium, locking nut end is settable dust-proof door, dustproof baffle
Lid is connected by screw with locking nut.
In order to preferably control gap, locking nut end face sets fluted preferred amount to be 10, the spiral shell of locking nut
Line pitch is 2mm, often by a groove, screw thread traveling 0.2mm distance, so as to reach controllable to pump axially position.
The beneficial effects of the utility model are：The utility model adjusts pump rotor and stator, housing using locking nut
Relative position, it is not necessary to process screens groove to each impeller rear and front end on pump shaft, has broken conventional horizontal water open type multistage
The single Scroll structure of pump, impeller location-independent but can not adjust runner and stator gap structure, using in pump shaft both sides
Screw thread is processed, impeller and stator are freely adjusted by the cooperation of locking nut and pump shaft, the close-fitting between stator and pump case
Positioning is closed, apparatus structure is significantly simplified, improves operational reliability, greatly shorten the axial distance of pump, overall structure
It is more compact, more preferable free adjustment axial thrust.
Brief description of the drawings
Fig. 1 is the utility model embodiment mounting structure schematic diagram；
Fig. 2 is the utility model embodiment locking nut cross-sectional view；
Fig. 3 is the utility model embodiment locking nut structure schematic diagram.
Reference：1- pump shafts, 2- keys, 3- locking nuts, 4- impellers, the dust-proof doors of 5-, 6- screws, 31- grooves
Embodiment
Content of the present utility model is described in further detail below in conjunction with the drawings and specific embodiments：
Horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device as shown in Figure 1, Figure 2, Figure 3 shows, including pump shaft 1, key 2, leaf
Wheel 4, locking nut 3 and dust-proof door 5, the both sides of pump shaft 1 are provided with the different external screw thread of rotation direction, and locking nut 3 is arranged at impeller 4
Outside, and provided with the internal thread that is engaged with the external screw thread of pump shaft 1, locking nut 3 is threadedly coupled with pump shaft 1, locking nut 3
End face, which is provided with uniform groove 31, pump shaft 1, is provided with locating slot, and key 2 is arranged on locking nut groove 31 and pump shaft 1 is positioned
In groove, the setting of key 2 is that, in order to prevent locking nut 3 from loosening, dust-proof door 5 is arranged on locking nut 3, and solid with screw 6
It is fixed.
Water pump carries out overall positioning by the two ends screw thread of pump shaft 1 and locking nut 3, in actual applications, in centrifugal pump pump
The both sides of axle 1 process screw thread respectively, and both sides rotation direction is different (oppositely oriented with pump), in the uniformly processing 10 of the end of locking nut 3
Individual same grooves 31, the pitch of locking nut 3 is 2mm, and locking nut 3 often rotates a groove, then the traveling 0.2mm of locking nut 3,
By adjusting two ends locking nut 3, thus it is possible to vary the fit clearance between rotor and housing, stator, and Adjustment precision can be with
It can be controlled according to the groove 31 that locking nut 3 is uniform within 0.2mm, effectively adjust the installation site of rotor, the axle reached
Can be controllable by both sides locking nut 3 to positioning.When it is determined that after installation site, pacifying at the locating slot on groove 31 and pump shaft 1
Retainingf key 2 is filled, to prevent locking nut 3 from loosening.To prevent rotor long-term abrasion or the greasy filth to screw thread are run in media environment
To screw corrosion on pump shaft 1, dust-proof door 5 is installed in the end of locking nut 3, dust-proof door 5 and pump shaft 1 reserve it is less between
Gap, to prevent abrasion of the larger particles to screw thread, and is tightened with screw 6, and rotor is eventually in the phase of 1 two ends locking nut of pump shaft 3
Under mutual adjustment effect, suitable location is formed between rotor and stator and housing, operation stability and reliability is improved, and extend
The maintenance cycle of bearing service life and pump.
After housing and stator tight fit, the runner of horizontal center-opening type multi-stage pump is formd, due to being combined between stator
Certain gap, then fitted into rotor it is possible that the situation deviateed with impeller is therefore, the two ends of pump shaft 1 are provided with
Screw thread, is then threadedly coupled with two ends impeller locking nut 3 with pump shaft 1, realizes that the two ends of pump shaft 1 can freely be adjusted.
Claims (4)
1. a kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device, it is characterised in that：Including locking nut and key, the lock
Tight nut is arranged on the outside of impeller, and pump shaft both sides connect provided with the different external screw thread of rotation direction, the locking nut with pump shaft screw thread
Connect, locking nut end face is provided with circumferential uniform multiple grooves, pump shaft and is provided with locating slot, and it is recessed that key is arranged on locking nut
In groove and pump shaft locating slot.
2. horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device according to claim 1, it is characterised in that：Locking nut
End is additionally provided with dust-proof door, and the dust-proof door is connected by screw with locking nut.
3. horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device according to claim 1 or 2, it is characterised in that：It is described
Locking nut number of recesses is 10.
4. horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device according to claim 3, it is characterised in that：The locking
The pitch of nut is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468663.7U CN206386299U (en) | 2016-12-29 | 2016-12-29 | A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621468663.7U CN206386299U (en) | 2016-12-29 | 2016-12-29 | A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206386299U true CN206386299U (en) | 2017-08-08 |
Family
ID=59490053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621468663.7U Expired - Fee Related CN206386299U (en) | 2016-12-29 | 2016-12-29 | A kind of horizontal middle open type centrifugal multistage pump multiple centrifugal pump axial direction positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206386299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538537A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of high speed inducer and its manufacturing method inhibiting cavitation oscillation |
-
2016
- 2016-12-29 CN CN201621468663.7U patent/CN206386299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538537A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of high speed inducer and its manufacturing method inhibiting cavitation oscillation |
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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 |
Granted publication date: 20170808 Termination date: 20171229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |