CN204783793U - Self -balancing multistage centrifugal pump positioning end bearing housing structure and bearing assembly - Google Patents
Self -balancing multistage centrifugal pump positioning end bearing housing structure and bearing assembly Download PDFInfo
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- CN204783793U CN204783793U CN201520510044.9U CN201520510044U CN204783793U CN 204783793 U CN204783793 U CN 204783793U CN 201520510044 U CN201520510044 U CN 201520510044U CN 204783793 U CN204783793 U CN 204783793U
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Abstract
The utility model belongs to the technical field of self -balancing multistage centrifugal pump and specifically relates to a self -balancing multistage centrifugal pump positioning end bearing housing structure and bearing assembly. This bearing assembly includes that bearing housing, deep groove ball bearing, thrust ball bearing, bearing position cover and locking are equipped with the cap, thrust ball bearing includes tight ring, DNA releaxed circular DNA and rolling element, the rolling element is located between the tight ring sum DNA releaxed circular DNA, the bearing housing is installed on self -balancing multistage centrifugal pump's pump shaft, deep groove ball bearing and thrust ball bearing install just thrust ball bearing's the adjacent installation with deep groove ball bearing of tight ring on the bearing housing, locking is equipped with the cap and installs in the pump shaft tip, the bearing position cover is installed and is equipped with between cap and the bearing housing in locking. Its mode that adopts deep groove ball bearing and thrust ball bearing combination application is ensured bearing radical location and axial and is born great axial force effect, extend bearing life, and it still has simple structure, characteristics that the practicality is strong moreover.
Description
Technical field
The utility model relates to self-balancing type multistage centrifugal pump field, especially a kind of self-balancing type multistage centrifugal pump positioning end bearing housing structure and bearing unit.
Background technique
Self-balanced multiple-stage centrifugal pump axle rotates under the drive of motor, to liquid work done, can increase, thus make to need the liquid of quantity by after the water-exit vertically mouth of suction pit via the horizontal outlet of the inlet segment of pump, positive impeller, guide vane, stage casing, water exit end, transition tube, secondary inlet segment, anti-impeller, return guide vane, water exit end, liquid is sent endlessly.This type pump is the alternative of D, DG type multistage centrifugal pump of Balance disc or balancing drum structure.Because it is without Balance disc and balancing drum, impeller is arranged symmetrically with, and relies on self two prescription to contrary impeller to realize axial equilibrium of forces.As shown in Figure 1, what its positioning end bearing housing often adopted is that two cover angular contact ball bearings 3 realize radial direction, axially locating, offsets remaining axial force.Because the axle of multistage centrifugal pump is longer, be provided with multiple impeller, if impeller channel exists minor departures when casting or weares and teares uneven, when causing pump operation like this, self axial force can not complete equilibrium, and when its deviation causes more greatly pump operation, axial force is larger.In use usually cause because axial force is excessive bearing running temperature higher, very easily damage.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of bearing unit for self-balancing type multistage centrifugal pump positioning end bearing housing structure, radial location and axially bear larger axis to power effect when this bearing unit can guarantee pump operation, extends bearing working life.
The disclosed bearing unit for self-balancing type multistage centrifugal pump positioning end bearing housing structure of the utility model comprises bearing housing, deep groove ball bearing, thrust ball bearing, bearing setting sleeve and the standby cap of locking, described thrust ball bearing comprises tight ring, DNA releaxed circular DNA and rolling element, described rolling element is between tight ring and DNA releaxed circular DNA, described bearing housing is installed on the pump shaft of self-balancing type multistage centrifugal pump, described deep groove ball bearing and thrust ball bearing to be installed on bearing housing and the installation adjacent with deep groove ball bearing of the tight ring of thrust ball bearing, described locking is installed on pump shaft end for cap, it is standby between cap and bearing housing that described bearing setting sleeve is installed on locking.
Preferably, the tight ring external diameter of described thrust ball bearing is less than the outer ring internal diameter of deep groove ball bearing.
Preferably, the rolling element of described thrust ball bearing is installed in the raceway of DNA releaxed circular DNA, and coordinates with tight czermak space.
On the basis of above-mentioned bearing unit, the utility model additionally provides a kind of self-balancing type multistage centrifugal pump positioning end bearing housing structure, it comprises casing, bearing prelocalization end cap, positioning end cover after bearing, pump shaft, stuffing box gland and bearing unit, described bearing prelocalization end cap is arranged in casing, after described bearing, positioning end cover is arranged at box back, described bearing prelocalization end cap, after bearing, positioning end cover and casing form bearing installing space, one end of described pump shaft extends in bearing installing space through bearing prelocalization end cap, described stuffing box gland is arranged between bearing prelocalization end cap and pump shaft, described bearing unit to be arranged in bearing installing space and to be installed on pump shaft, described bearing unit comprises bearing housing, deep groove ball bearing, thrust ball bearing, bearing setting sleeve and the standby cap of locking, described thrust ball bearing comprises tight ring, DNA releaxed circular DNA and rolling element, described rolling element is between tight ring and DNA releaxed circular DNA, described bearing housing is installed on pump shaft, described DNA releaxed circular DNA is installed on inside bearing prelocalization end cap, the tight ring of described thrust ball bearing and deep groove ball bearing are installed on bearing housing, the tight ring of described thrust ball bearing is adjacent with deep groove ball bearing, Spielpassung on rear side of positioning end cover front end and deep groove ball bearing outer ring after described bearing, described locking is installed on pump shaft end for cap, it is standby between cap and bearing housing that described bearing setting sleeve is installed on locking.
Preferably, bottom described bearing installing space, there is bearing lubrication oil tank, be provided with between described bearing housing and bearing setting sleeve and get rid of oil jacket, described in get rid of on oil jacket disc be installed, described disc extends in bearing lubrication oil tank.
Preferably, the tight ring external diameter of described thrust ball bearing is less than the outer ring internal diameter of deep groove ball bearing.
Preferably, the gap after described deep groove ball bearing and bearing between positioning end cover and bearing clearance suitable.
The beneficial effects of the utility model are: this bearing housing structure and bearing unit adopt the mode of deep groove ball bearing and thrust ball bearing Combination application, utilize the radial location effect of component on deep groove ball bearing reinforced shaft and axle, reduce the vibration of pump in running; Utilize the axially locating effect of component on thrust ball bearing reinforced shaft and axle, offset the active force in pump operation process, thus guarantee bearing radial location and axially bear larger axis to power effect extend bearing working life, and it also to have simple, the practical feature of structure.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of self-balancing type multistage centrifugal pump positioning end bearing unit in prior art;
Fig. 2 is the schematic diagram of bearing unit disclosed in the utility model;
Fig. 3 is self-balancing type multistage centrifugal pump positioning end bearing housing structural representation of the present utility model.
Reference character: 1-pump shaft, 2-bearing housing, 3-angular contact ball bearing, 4-thrust ball bearing, the tight ring of 41-, 42-rolling element, 43-DNA releaxed circular DNA, 5-deep groove ball bearing, 6-bearing setting sleeve, the standby cap of 7-locking, 8-gets rid of oil jacket, 9-disc, 10-casing, 11-bearing prelocalization end cap, positioning end cover after 12-bearing, 13-stuffing box gland, 14-bearing installing space, 15-bearing lubrication oil tank.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
As shown in Figure 2, the disclosed bearing unit for self-balancing type multistage centrifugal pump positioning end bearing housing structure of the utility model, comprise bearing housing 2, deep groove ball bearing 5, thrust ball bearing 4, bearing setting sleeve 6 and the standby cap 7 of locking, described thrust ball bearing 4 comprises tight ring 41, DNA releaxed circular DNA 43 and rolling element 42, described rolling element 42 is between tight ring 41 and DNA releaxed circular DNA 43, described bearing housing 2 is installed on the pump shaft 1 of self-balancing type multistage centrifugal pump, described deep groove ball bearing 5 and thrust ball bearing 4 to be installed on bearing housing 2 and tight ring 41 installation adjacent with deep groove ball bearing 5 of thrust ball bearing 4, described locking is installed on pump shaft 1 end for cap 7, it is standby between cap 7 and bearing housing 2 that described bearing setting sleeve 6 is installed on locking.
Wherein, bearing setting sleeve 6 and standby cap 7 Main Function of locking carry out locking and positioning to bearing, and the effect of bearing housing 2 is mainly in order to protect pump shaft 1, is convenient to the installation of bearing simultaneously.DNA releaxed circular DNA 43 internal diameter of thrust ball bearing 4 is bigger, do not rotate with pump shaft 1, so be installed on the static element of bearing housing 10, and tight ring 41 internal diameter is less, generally be connected with bearing housing 2 interference, and deep groove ball bearing 5 is installed on bearing housing 2 equally, both mating reactions therefore to be made, need by tight ring 41 installation adjacent with deep groove ball bearing 5 of thrust ball axle 4.So, utilize the radial location effect of component on deep groove ball bearing 5 reinforced shaft and axle, reduce the vibration of pump in running; Utilize the axially locating effect of component on thrust ball bearing 4 reinforced shaft and axle, offset the active force in pump operation process, two bearings matches thus realizes pump and operationally can guarantee radial location and axially bear larger axis to power effect, extends bearing working life.
Outer ring due to deep groove ball bearing 5 is installed in bearing housing 10, and do not rotate with pump shaft 1, and the tight ring 41 of thrust ball bearing 4 can rotate along with pump shaft 1, mutually interferes for preventing both, as optimal way, tight ring 41 external diameter of described thrust ball bearing 4 is less than the outer ring internal diameter of deep groove ball bearing 5.Meanwhile, the external diameter of deep groove ball bearing 5 is bigger, can also guarantee the lubrication of thrust ball bearing 4.
For ensureing the normal operation of thrust ball bearing 4, as optimal way, the rolling element 42 of described thrust ball bearing 4 is installed in the raceway of DNA releaxed circular DNA 43, and with tight ring 41 Spielpassung.
Based on above-mentioned bearing unit, the invention also discloses a kind of self-balancing type multistage centrifugal pump positioning end bearing housing structure, comprise casing 10, bearing prelocalization end cap 11, positioning end cover 12 after bearing, pump shaft 1, stuffing box gland 13 and bearing unit, described bearing prelocalization end cap 11 is arranged in casing 10, after described bearing, positioning end cover 12 is arranged at casing 10 rear end, described bearing prelocalization end cap 11, after bearing, positioning end cover 12 and casing 10 form bearing installing space 14, one end of described pump shaft 1 extends in bearing installing space 14 through bearing prelocalization end cap 11, described stuffing box gland 13 is arranged between bearing prelocalization end cap 11 and pump shaft 1, described bearing unit to be arranged in bearing installing space 14 and to be installed on pump shaft 1, described bearing unit comprises bearing housing 2, deep groove ball bearing 5, thrust ball bearing 4, bearing setting sleeve 6 and the standby cap 7 of locking, described thrust ball bearing 4 comprises tight ring 41, DNA releaxed circular DNA 43 and rolling element 42, described rolling element 42 is between tight ring 41 and DNA releaxed circular DNA 43, described bearing housing 2 is installed on pump shaft 1, described DNA releaxed circular DNA 43 is installed on inside bearing prelocalization end cap 11, the tight ring of described thrust ball bearing 4 and deep groove ball bearing 5 are installed on bearing housing 2, the tight ring 41 of described thrust ball bearing 4 is adjacent with deep groove ball bearing 5, Spielpassung on rear side of positioning end cover 12 front end and deep groove ball bearing 5 outer ring after described bearing, described locking is installed on pump shaft 1 end for cap 7, it is standby between cap 7 and bearing housing 2 that described bearing setting sleeve 6 is installed on locking.
In this casing 10, after bearing prelocalization end cap 11, bearing, positioning end cover 12 and casing 10 form bearing installing space 14, and its front end arranges stuffing box gland 13 and carries out seal isolation.As described above, the tight ring 41 of thrust ball bearing 4 is installed on bearing housing 2, rotate, and DNA releaxed circular DNA 43 does not rotate with pump shaft 1 with pump shaft 1, is installed on inside bearing prelocalization end cap 11, to guarantee that thrust ball bearing 4 normally works.Equally, for guaranteeing that thrust ball bearing 4 and deep groove ball bearing 5 are not interfered mutually, tight ring 41 external diameter of described thrust ball bearing 4 is less than the outer ring internal diameter of deep groove ball bearing 5.
Usually be provided with lubrication system in bearing housing to lubricate bearing, lubrication system can adopt the mode such as oil mist lubrication, splash lubrication, and as optimal way, bottom described bearing installing space 14, there is bearing lubrication oil tank 15, be provided with between described bearing housing 2 and bearing setting sleeve 6 and get rid of oil jacket 8, described getting rid of on oil jacket 8 is provided with disc 9, and described disc 9 extends in bearing lubrication oil tank 14.Disc 9 works by the lubricant oil in bearing lubrication oil tank 15 by taking on bearing, thus guarantees the lubrication of bearing.
After bearing prelocalization end cap and bearing, positioning end cover Main Function is positioning bearing, damage because of expanded by heating or axial clearance vibration for avoiding bearing while positioning bearing, so, Spielpassung on rear side of positioning end cover 12 front end and deep groove ball bearing 5 outer ring after bearing, and as optimal way, gap and the bearing clearance in the gap after described deep groove ball bearing 5 and bearing between positioning end cover 12 are suitable.Namely refer to that gap after deep groove ball bearing 5 and bearing between positioning end cover 12 is slightly larger than axial internal clearance.
Below a kind of mode of execution of the concrete installation steps of self-balancing type multistage centrifugal pump positioning end bearing housing structure disclosed in the utility model,
1, first the DNA releaxed circular DNA 43 of thrust ball bearing 4 is installed on bearing prelocalization end cap 11, bearing is positioned, prevent the running axis generation axial displacement forward at pump; And bearing prelocalization end cap 11 is installed on casing 10, with bolts between bearing prelocalization end cap 11 and casing 10;
2, the tight ring 41 of thrust ball bearing 4 and deep groove ball bearing 5 are installed on bearing housing 2, the mode of interference fit is adopted to connect, adopt the mode of deep groove ball bearing 5 and thrust ball bearing 4 Combination application, utilize the radial location effect of component on deep groove ball bearing 5 reinforced shaft and axle, reduce the vibration of pump in running; Utilize the axially locating effect of component on thrust ball bearing 4 reinforced shaft and axle, offset the active force in pump operation process;
3, the rolling element 42 of thrust ball bearing 4 is installed in the raceway of thrust ball DNA releaxed circular DNA 43;
4, be installed in casing 10 by the complete bearing housing 2 of assembling, and carry out Spielpassung with the rolling element 42 of thrust ball bearing 4, gap control is within 0.08mm;
5, stuffing box gland 13 is arranged on the pump shaft 1 of multistage centrifugal pump, utilizes the axle of stuffing box gland 13 pairs of multistage centrifugal pumps to seal; And the bearing housing 10 after assembling is connected with pump pedestal;
6, getting rid of oil jacket 8 adopts the mode of Spielpassung to be installed on the pump shaft 1 of multistage centrifugal pump, and be then installed on by disc 9 and get rid of on oil jacket 8, in the running of pump, the lubricant oil in fuel tank is drained to bearing by disc 9, carries out sufficient lubrication to bearing;
7, adopt the mode of Spielpassung to be installed on the axle of multistage centrifugal pump by bearing setting sleeve 6, then utilize the coupling mechanism force between locking nut and the axle of multistage centrifugal pump to be fixed assembly;
8, mode with bolts for rear end positioning end cover is installed on casing 10, between rear end positioning end cover and deep groove ball bearing 5 contact position, retains certain gap, avoid bearing axial motion or thermal expansion and damage.
Claims (7)
1. for the bearing unit of self-balancing type multistage centrifugal pump positioning end bearing housing structure, it is characterized in that: comprise bearing housing (2), deep groove ball bearing (5), thrust ball bearing (4), bearing setting sleeve (6) and the standby cap (7) of locking, described thrust ball bearing (4) comprises tight ring (41), DNA releaxed circular DNA (43) and rolling element (42), described rolling element (42) is positioned between tight ring (41) and DNA releaxed circular DNA (43), described bearing housing (2) is installed on the pump shaft (1) of self-balancing type multistage centrifugal pump, described deep groove ball bearing (5) and thrust ball bearing (4) are installed on bearing housing (2) and go up and the tight ring (41) of thrust ball bearing (4) and deep groove ball bearing (5) adjacent installation, described locking is installed on pump shaft (1) end for cap (7), it is standby between cap (7) and bearing housing (2) that described bearing setting sleeve (6) is installed on locking.
2., as claimed in claim 1 for the bearing unit of self-balancing type multistage centrifugal pump positioning end bearing housing structure, it is characterized in that: tight ring (41) external diameter of described thrust ball bearing (4) is less than the outer ring internal diameter of deep groove ball bearing (5).
3. as claimed in claim 1 or 2 for the bearing unit of self-balancing type multistage centrifugal pump positioning end bearing housing structure, it is characterized in that: the rolling element (42) of described thrust ball bearing (4) is installed in the raceway of DNA releaxed circular DNA (43), and with tight ring (41) Spielpassung.
4. self-balancing type multistage centrifugal pump positioning end bearing housing structure, comprise casing (10), bearing prelocalization end cap (11), positioning end cover (12) after bearing, pump shaft (1), stuffing box gland (13) and bearing unit, described bearing prelocalization end cap (11) is arranged in casing (10), after described bearing, positioning end cover (12) is arranged at casing (10) rear end, described bearing prelocalization end cap (11), after bearing, positioning end cover (12) and casing (10) form bearing installing space (14), one end of described pump shaft (1) extends in bearing installing space (14) through bearing prelocalization end cap (11), described stuffing box gland (13) is arranged between bearing prelocalization end cap (11) and pump shaft (1), described bearing unit to be arranged in bearing installing space (14) and to be installed on pump shaft (1), it is characterized in that: described bearing unit comprises bearing housing (2), deep groove ball bearing (5), thrust ball bearing (4), bearing setting sleeve (6) and the standby cap (7) of locking, described thrust ball bearing (4) comprises tight ring (41), DNA releaxed circular DNA (43) and rolling element (42), described rolling element (42) is positioned between tight ring (41) and DNA releaxed circular DNA (43), described bearing housing (2) is installed on pump shaft (1), described DNA releaxed circular DNA (43) is installed on bearing prelocalization end cap (11) inner side, the tight ring of described thrust ball bearing (4) and deep groove ball bearing (5) are installed on bearing housing (2), the tight ring (41) of described thrust ball bearing (4) is adjacent with deep groove ball bearing (5), Spielpassung on rear side of positioning end cover (12) front end and deep groove ball bearing (5) outer ring after described bearing, described locking is installed on pump shaft (1) end for cap (7), it is standby between cap (7) and bearing housing (2) that described bearing setting sleeve (6) is installed on locking.
5. self-balancing type multistage centrifugal pump positioning end bearing housing structure as claimed in claim 4, it is characterized in that: described bearing installing space (14) bottom has bearing lubrication oil tank (15), be provided with between described bearing housing (2) and bearing setting sleeve (6) and get rid of oil jacket (8), described getting rid of on oil jacket (8) is provided with disc (9), and described disc (9) extends in bearing lubrication oil tank (14).
6. the self-balancing type multistage centrifugal pump positioning end bearing housing structure as described in claim 4 or 5, is characterized in that: tight ring (41) external diameter of described thrust ball bearing (4) is less than the outer ring internal diameter of deep groove ball bearing (5).
7. the self-balancing type multistage centrifugal pump positioning end bearing housing structure as described in claim 4 or 5, is characterized in that: the gap after described deep groove ball bearing (5) and bearing between positioning end cover (12) and bearing clearance suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520510044.9U CN204783793U (en) | 2015-07-14 | 2015-07-14 | Self -balancing multistage centrifugal pump positioning end bearing housing structure and bearing assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520510044.9U CN204783793U (en) | 2015-07-14 | 2015-07-14 | Self -balancing multistage centrifugal pump positioning end bearing housing structure and bearing assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043324A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of axial thrust balancing devices and design method for single-stage radial turbines expanding machine |
| CN112177924A (en) * | 2020-09-30 | 2021-01-05 | 李雪琴 | Axial force bearing mechanism of pump shaft of fracturing pump |
| CN114110127A (en) * | 2021-08-31 | 2022-03-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Double deep groove ball bearing pre-tightening eccentric cam follower |
-
2015
- 2015-07-14 CN CN201520510044.9U patent/CN204783793U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043324A (en) * | 2019-03-25 | 2019-07-23 | 华电电力科学研究院有限公司 | A kind of axial thrust balancing devices and design method for single-stage radial turbines expanding machine |
| CN110043324B (en) * | 2019-03-25 | 2023-11-28 | 华电电力科学研究院有限公司 | Axial force balancing device for single-stage radial turbine expander and design method |
| CN112177924A (en) * | 2020-09-30 | 2021-01-05 | 李雪琴 | Axial force bearing mechanism of pump shaft of fracturing pump |
| CN114110127A (en) * | 2021-08-31 | 2022-03-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Double deep groove ball bearing pre-tightening eccentric cam follower |
| CN114110127B (en) * | 2021-08-31 | 2023-06-02 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Double deep groove ball bearing pretension eccentric cam follower |
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