CN106246594A - A kind of impeller locking structure of slurry circulating pump - Google Patents
A kind of impeller locking structure of slurry circulating pump Download PDFInfo
- Publication number
- CN106246594A CN106246594A CN201610773492.7A CN201610773492A CN106246594A CN 106246594 A CN106246594 A CN 106246594A CN 201610773492 A CN201610773492 A CN 201610773492A CN 106246594 A CN106246594 A CN 106246594A
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- CN
- China
- Prior art keywords
- impeller
- locking nut
- pump shaft
- locking
- endoporus
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to the impeller locking structure of a kind of slurry circulating pump, belong to slurry circulating pump field.The impeller locking structure of the present invention, including impeller capping, locking nut, lock-screw, impeller, pump shaft；The locking nut and the impeller capping that are threaded in pump shaft nose threads section realize locking to the impeller being socketed in pump shaft front end；The lock-screw being threaded in annular positioning groove bottom surface, impeller endoporus front end inserts between the locking nut being threaded in pump shaft nose threads section by open slot, makes locking nut lock with pump shaft circumference；Screwed hole number X of impeller endoporus front end and open slot number Y of locking nut outer shroud are mutual prime rwmber.The impeller locking structure of the present invention, processing is simple, easy accessibility, reliable lock, fully ensures that impeller remains to be fastened on pump shaft in rotation for a long time, extends the service life of pump.
Description
Technical field
The present invention relates to the impeller locking structure of a kind of slurry circulating pump, belong to slurry circulating pump field.
Background technology
In conventional slurries circulating pump structure, pump shaft and the axial locking structure of impeller, as it is shown in figure 1, by before pump shaft
Side wall threaded coupling nut, attachment screw on nut, screw goes backward through pad and compresses the internal ring of impeller；Pump shaft front end face is again
Being bolted impeller capping, the outer making impeller cover covers the joint gap of pump shaft and impeller, it is achieved pump shaft front end
Seal.Owing to the axial locking of pump shaft Yu impeller is by the screw in compression pad on nut and then to compress impeller, it axially connects
Contacting surface is amassed little；After circulating pump operates for a long time, pad is susceptible to abrasion, can make impeller play forward, and impeller is at axial non-lock
Rotating under tight state, can produce bigger radial cut stress, when radial cut stress is excessive, pump shaft is fixed with impeller capping
Bolt will rupture, and serosity enters pump shaft, after running a period of time, causes nut to lose efficacy, and impeller is serious pine from pump shaft
Move and cause the damage of impeller and other parts.Have a strong impact on the safety of pump, cause the maintenance cost of whole engineering to increase.
Summary of the invention
The impeller locking mechanism that the invention aims to solve the employing of conventional recycle pump can be sent out after long-play
The situations such as leave wheel loosens, bolt fracture, and the impeller locking structure of a kind of slurry circulating pump is provided.
It is an object of the invention to be achieved through the following technical solutions:
The impeller locking structure of a kind of slurry circulating pump of the present invention, including impeller capping, locking nut, locking screw
Nail, impeller, pump shaft；
Wherein, the front end side wall of pump shaft is machined with the thread segment matched with locking nut female thread；Before impeller endoporus
End is machined with the annular positioning groove matched with locking nut external diameter, has on the bottom surface of impeller endoporus front end annular positioning groove
The screwed hole of X circle distribution；The outer shroud of locking nut axially has the screwed hole of Y and impeller endoporus circular orientation groove bottom
It is positioned at the open slot of same circumference；Impeller capping back-end central has blind with the screw thread that pump shaft nose threads section screw thread matches
Hole, impeller capping rear end end face is processed as and the occlusion part matched in impeller endoporus front end profile；
Impeller set is connected on pump shaft front end, circumferentially positioned by bond structure between impeller and pump shaft；Locking nut is threaded
At the back segment of pump shaft nose threads section, spiral tightens the rear end face compression impeller endoporus front end annular positioning groove to locking nut
Bottom surface, reversely rotates locking nut, until the open slot of the screwed hole of impeller endoporus front end and locking nut outer shroud has one first
Group aligns, and loads lock-screw in the one group of screwed hole aligned and open slot, makes locking nut lock with pump shaft circumference；Impeller
Closure threads is connected to the leading portion of pump shaft nose threads section, makes the occlusion part of impeller capping rear end be pressed on impeller endoporus front end,
And at impeller capping with impeller endoporus front end compression, sealing ring is installed；
Wherein, screwed hole number X of impeller endoporus front end and open slot number Y of locking nut outer shroud are mutual prime rwmber, and
In screwed hole number X of impeller endoporus front end, open slot number Y of locking nut outer shroud, the rear end face of locking nut and impeller
The relation of minimum axial direction distance L of annular positioning groove bottom surface, front end, hole meets following formula:
(X×Y)>(p/L)；
In formula, p is the pitch of locking nut female thread.
Locking nut covers the locking direction with pump shaft nose threads section with locking direction, the impeller of pump shaft nose threads section
All contrary with the direction of rotation of pump shaft, when pump is properly functioning, make the capping of locking nut, impeller turn tighter and tighter with pump shaft.
The locking nut and the impeller capping that are threaded in pump shaft nose threads section are real to the impeller being socketed in pump shaft front end
Existing locking, bears whole axial force；The lock-screw being threaded in annular positioning groove bottom surface, impeller endoporus front end inserts spiral shell
Stricture of vagina is connected between the locking nut of pump shaft nose threads section, by open slot, make locking nut lock with pump shaft circumference, keep away
Exempt from locking nut to occur to loosen, cause the possibility of pump shaft and impeller axial float；Additionally locking nut passes through with lock-screw
Open slot connects, and eliminating pump shaft may to the shearing of lock-screw with during impeller generation radial force；The spiral shell of impeller endoporus front end
Pit number X is mutual prime rwmber with open slot number Y of locking nut outer shroud, and it is secondary with aligning of open slot that multiple adds screwed hole
Number, effectively controls the rear end face of locking nut and the maximal clearance of annular positioning groove bottom surface, impeller endoporus front end, it is ensured that lock
Jack panel compresses impeller, has stopped to cause the probability not compressing impeller owing to locking nut assembling is not in place.
Beneficial effect
The impeller locking structure of the present invention, processing is simple, easy accessibility, and reliable lock fully ensures that impeller is when long
Between rotation remain to be fastened on pump shaft, extend pump service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of conventional slurries circulating pump impeller locking mechanism；
Fig. 2 is the schematic diagram of present slurry circulating pump impeller locking mechanism；
Fig. 3 is the close-up schematic view of Fig. 2；
Fig. 4 is the end view of locking nut in present slurry circulating pump impeller locking mechanism；
Wherein: 1-impeller；2-lock-screw；3-key；4-impeller covers；5-locking nut；6-pump shaft.
Detailed description of the invention
With embodiment, present disclosure is further described below in conjunction with the accompanying drawings:
Embodiment
As shown in Figure 2,3, the impeller locking structure of a kind of slurry circulating pump of the present invention, including impeller capping 4, locking
Nut 5, lock-screw 2, impeller 1, pump shaft 6；
Wherein, the front end side wall of pump shaft 6 is threaded the thread segment that model is M160 × 4-4g；Before impeller 1 endoporus
End is machined with the annular positioning groove matched with locking nut 5 external diameter, opens on the bottom surface of impeller 1 endoporus front end annular positioning groove
There is the screwed hole of 8 circle distribution；As shown in Figure 4, locking nut 5 female thread model is M160 × 4-5H, outside locking nut 5
Annulate shaft is to having 9 open slots being positioned at same circumference with the screwed hole of impeller 1 endoporus circular orientation groove bottom, as shown in Figure 4；
Impeller covers 4 back-end central and has the tapped blind hole that screw thread model is M160 × 4-5H, impeller cover 4 rear end end faces be processed as with
At the occlusion part that impeller 1 endoporus front end profile matches；
Impeller 1 is socketed in pump shaft 6 front end, circumferentially positioned by bond structure between impeller 1 and pump shaft 6；Locking nut 5 screw thread
Being connected to the back segment of pump shaft 6 nose threads section, spiral tightens the rear end face compression impeller 1 endoporus front end annular to locking nut 5
The bottom surface of locating slot, reversely rotates locking nut 5, until the screwed hole of impeller 1 endoporus front end and the opening of locking nut 5 outer shroud
Groove has one group to align first, loads lock-screw 2, make locking nut 5 and pump shaft in the one group of screwed hole aligned and open slot
Circumference locking；Impeller capping 4 is threaded in the leading portion of pump shaft 6 nose threads section, and the occlusion part making impeller cover 4 rear ends compresses
In impeller 1 endoporus front end, and at impeller capping 4 with impeller 1 endoporus front end compression, sealing ring is installed.
Locking nut 5 locks direction, impeller capping 4 and the locking of pump shaft 6 nose threads section with pump shaft 6 nose threads section
Direction is all contrary with the direction of rotation of pump shaft 6, when pump is properly functioning, makes the capping of locking nut, impeller turn tighter and tighter with pump shaft.
Wherein, the open slot of the screwed hole of impeller 1 endoporus front end and locking nut 5 outer shroud occurs twice slotted eye to align to be revolved
The angle turned is 360/ (8 × 9)=5 degree, according to pitch 4mm of locking nut 5 with pump shaft 6 front end side wall threaded engagement, draws
After rotating 5 degree, locking nut 5 axial displacement on impeller 1 is 4 × 5/360=0.0556mm；
Therefore, after spiral tightens locking nut 5, reversely rotate screwed hole and the lock of locking nut 5 to impeller 1 endoporus front end
The open slot of jack panel 5 outer shroud have first one group to timing, the ultimate range that locking nut 5 is moved rearwards by is 0.0556mm, i.e.
Locking nut 5 rear end face after locking is 0.0556mm with the maximal clearance of annular positioning groove bottom surface, impeller 1 endoporus front end, meets
Maximal clearance value requirement at this in circulating pump design.
Claims (3)
1. an impeller locking structure for slurry circulating pump, is characterized in that: include impeller capping, locking nut, lock-screw,
Impeller, pump shaft；
Wherein, the front end side wall of pump shaft is machined with the thread segment matched with locking nut female thread；The front end of impeller endoporus adds
Work has the annular positioning groove matched with locking nut external diameter, has X on the bottom surface of impeller endoporus front end annular positioning groove
The screwed hole of circle distribution；The outer shroud of locking nut axially has the screwed hole position of Y and impeller endoporus circular orientation groove bottom
Open slot in same circumference；Impeller capping back-end central has the tapped blind hole matched with pump shaft nose threads section screw thread,
Impeller capping rear end end face is processed as and the occlusion part matched in impeller endoporus front end profile；
Impeller set is connected on pump shaft front end, circumferentially positioned by bond structure between impeller and pump shaft；Locking nut is threaded in pump
The back segment of axle nose threads section, spiral tightens the end of the rear end face compression impeller endoporus front end annular positioning groove to locking nut
Face, reversely rotates locking nut, until the open slot of the screwed hole of impeller endoporus front end and locking nut outer shroud has one group first
Align, in the one group of screwed hole aligned and open slot, load lock-screw, make locking nut lock with pump shaft circumference；Impeller seals
Lid is threaded in the leading portion of pump shaft nose threads section, makes the occlusion part of impeller capping rear end be pressed on impeller endoporus front end；
Wherein, screwed hole number X of impeller endoporus front end and open slot number Y of locking nut outer shroud are mutual prime rwmber, and impeller
Before screwed hole number X of endoporus front end, open slot number Y of locking nut outer shroud, the rear end face of locking nut and impeller endoporus
The relation of minimum axial direction distance L of end annular positioning groove bottom surface meets following formula:
(X×Y)>(p/L)；
In formula, p is the pitch of locking nut female thread.
The impeller locking structure of a kind of slurry circulating pump the most as claimed in claim 1, is characterized in that: at impeller capping and leaf
At the compression of wheel endoporus front end, sealing ring is installed.
The impeller locking structure of a kind of slurry circulating pump the most as claimed in claim 1, is characterized in that: locking nut and pump shaft
The locking direction of nose threads section, impeller capping and pump shaft nose threads section lock direction all with the direction of rotation phase of pump shaft
Instead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773492.7A CN106246594A (en) | 2016-08-30 | 2016-08-30 | A kind of impeller locking structure of slurry circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773492.7A CN106246594A (en) | 2016-08-30 | 2016-08-30 | A kind of impeller locking structure of slurry circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106246594A true CN106246594A (en) | 2016-12-21 |
Family
ID=58079804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610773492.7A Pending CN106246594A (en) | 2016-08-30 | 2016-08-30 | A kind of impeller locking structure of slurry circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246594A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163816A (en) * | 1991-07-12 | 1992-11-17 | General Motors Corporation | Wheel lock, centering and drive means and turbocharger impeller combination |
| US20050201876A1 (en) * | 2004-03-15 | 2005-09-15 | Nidec Shibaura Corporation | Structure of the rotating member |
| CN201244447Y (en) * | 2008-08-04 | 2009-05-27 | 襄樊五二五泵业有限公司 | Blade wheel locking structure of flue gas desulfurization recycle pump |
| CN201526502U (en) * | 2009-09-30 | 2010-07-14 | 江苏双达工程技术研究中心有限公司 | Device for connecting pump shaft and impeller |
| CN202768467U (en) * | 2012-05-29 | 2013-03-06 | 南京蓝深制泵(集团)股份有限公司 | Fastening and anti-loosening structure for centrifugal pump impeller |
| CN202851600U (en) * | 2012-09-10 | 2013-04-03 | 吉林恒联精密铸造科技有限公司 | Bridge crane angle form bearing block bearing lock nut |
| CN202991906U (en) * | 2012-12-03 | 2013-06-12 | 高邮市邮元水泵厂 | Rotating body axial fastening structure on rotating shaft |
-
2016
- 2016-08-30 CN CN201610773492.7A patent/CN106246594A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163816A (en) * | 1991-07-12 | 1992-11-17 | General Motors Corporation | Wheel lock, centering and drive means and turbocharger impeller combination |
| US20050201876A1 (en) * | 2004-03-15 | 2005-09-15 | Nidec Shibaura Corporation | Structure of the rotating member |
| CN201244447Y (en) * | 2008-08-04 | 2009-05-27 | 襄樊五二五泵业有限公司 | Blade wheel locking structure of flue gas desulfurization recycle pump |
| CN201526502U (en) * | 2009-09-30 | 2010-07-14 | 江苏双达工程技术研究中心有限公司 | Device for connecting pump shaft and impeller |
| CN202768467U (en) * | 2012-05-29 | 2013-03-06 | 南京蓝深制泵(集团)股份有限公司 | Fastening and anti-loosening structure for centrifugal pump impeller |
| CN202851600U (en) * | 2012-09-10 | 2013-04-03 | 吉林恒联精密铸造科技有限公司 | Bridge crane angle form bearing block bearing lock nut |
| CN202991906U (en) * | 2012-12-03 | 2013-06-12 | 高邮市邮元水泵厂 | Rotating body axial fastening structure on rotating shaft |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161221 |