CN111503004B - Motor limit structure of multi-stage pump - Google Patents
Motor limit structure of multi-stage pump Download PDFInfo
- Publication number
- CN111503004B CN111503004B CN202010331528.2A CN202010331528A CN111503004B CN 111503004 B CN111503004 B CN 111503004B CN 202010331528 A CN202010331528 A CN 202010331528A CN 111503004 B CN111503004 B CN 111503004B
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- China
- Prior art keywords
- motor
- connecting seat
- friction plate
- thrust
- motor shaft
- 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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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
- F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
- F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a motor limiting structure of a multistage pump, which can effectively improve the rotation stability of a motor shaft and has the technical scheme that the motor limiting structure comprises a motor barrel, a motor and a motor shaft, wherein the motor and the motor shaft are both arranged in the motor barrel, an upper connecting seat and a lower connecting seat are respectively arranged at two ends of the motor barrel, the upper connecting seat and the lower connecting seat respectively comprise shaft holes for the motor shaft to pass through, a thrust structure sleeved on the motor shaft is arranged between the lower connecting seat and the motor, the thrust structure comprises an upper friction plate, a lower friction plate and a thrust block which are sequentially arranged from top to bottom, the top end of the lower connecting seat is provided with a spherical groove, and the bottom surface of the thrust block is provided with a spherical lug matched with the spherical groove.
Description
Technical Field
The invention belongs to the technical field of water pumps, and particularly relates to a high-stability thrust structure of a multi-stage pump.
Background
In order to obtain a higher lift, the water pump needs to be provided with a multi-stage impeller and a flow guide component on a pump shaft, but along with the increase of the impeller, the running stability of a motor in the water pump is reduced, and the performance of the water pump is affected, so that how to effectively improve the running stability of the motor is particularly important.
Disclosure of Invention
The invention aims to provide a motor limiting structure of a multistage pump, which can effectively improve the rotation stability of a motor shaft.
The purpose of the invention is realized as follows: the utility model provides a multistage pump's motor limit structure, includes motor barrel, motor and motor shaft, and motor shaft are all installed in motor barrel, its characterized in that: the motor is characterized in that two ends of the motor barrel are respectively provided with an upper connecting seat and a lower connecting seat, the upper connecting seat and the lower connecting seat respectively comprise a shaft hole for a motor shaft to pass through, an anti-thrust structure sleeved on the motor shaft is arranged between the lower connecting seat and the motor, the anti-thrust structure comprises an upper friction plate, a lower friction plate and a thrust seat which are sequentially arranged from top to bottom, the top end of the lower connecting seat is provided with a spherical groove, and the bottom surface of the thrust seat is provided with a spherical convex block matched with the spherical groove.
The invention is further configured to: a first limiting mechanism used for limiting circumferential rotation is arranged between the spherical convex block and the spherical groove.
The invention is further configured to: first stop gear is including the spacing sand grip that is located spherical lug and the spacing recess of arranging the spherical groove in, spacing sand grip and the mutual adaptation of spacing recess.
The invention is further configured to: and a second limiting mechanism used for limiting circumferential rotation is arranged between the lower friction plate and the thrust block.
The invention is further configured to: the second limiting mechanism comprises a positioning lug arranged on the bottom surface of the lower friction plate and a positioning groove arranged on the top surface of the thrust block, and the positioning lug is matched with the positioning groove.
The invention is further configured to: the lower friction plate is of a multi-petal structure, and the positioning lug is arranged on the bottom surface of each lower friction plate.
The invention is further configured to: and a framework oil seal is arranged in the shaft hole.
The invention is further configured to: and the outer wall of the motor shaft is also provided with a ceramic coating matched with the framework oil seal.
By adopting the technical scheme, the thrust structure is used for bearing the axial load of the motor shaft, and the thrust structure is abutted against the lower connecting seat through the spherical surface, so that the automatic centering effect is good, the levelness is high after the installation, and the stability of the motor shaft during rotation can be improved; go up the shaft hole of connecting seat and the shaft hole of connecting seat down and be used for bearing the radial load of motor shaft, play the effect that reduces wearing and tearing through skeleton oil blanket and ceramic coating simultaneously, stability when improving the motor shaft rotation.
Drawings
FIG. 1 is a schematic view of the construction of a multistage pump according to the present invention;
FIG. 2 is a schematic structural diagram of a motor limiting structure according to the present invention;
the reference numbers in the figures are: 1. a motor cartridge; 2. a motor shaft; 3. an upper connecting seat; 4. a lower connecting seat; 5. an upper friction plate; 6. a lower friction plate; 7. a thrust block; 8. a spherical bump; 9. limiting convex strips; 10. positioning the bump; 11. and (5) framework oil seal.
Detailed Description
The invention is further described in the following with specific embodiments in conjunction with the accompanying drawings, see fig. 1-2:
the utility model provides a multistage pump's motor limit structure, includes motor barrel 1, motor and motor shaft 2, and motor shaft 2 are all installed in motor barrel 1, its characterized in that: be equipped with connecting seat 3 and lower connecting seat 4 on the both ends of motor barrel 1 respectively, go up connecting seat 3 and connecting seat 4 down and all include the shaft hole that supplies motor shaft 2 to pass, be equipped with the thrust structure of cover on motor shaft 2 between lower connecting seat 4 and the motor, the thrust is equipped with spherical groove on the top of lower connecting seat 4 including last friction disc 5, lower friction disc 6 and the thrust socket 7 that set gradually from top to bottom, the bottom surface of thrust socket 7 is equipped with the spherical lug 8 with spherical groove adaptation.
Because the spherical contact surface is arranged between the thrust block 7 and the base, the self-centering device can automatically center between the thrust block 7 and the base when in use, has good stability, is not easy to deviate, and improves the stability of the rotation of the motor shaft 2.
And a first limiting mechanism for limiting circumferential rotation is arranged between the spherical bump 8 and the spherical groove.
First stop gear is including the spacing concave groove of being located spacing sand grip 9 on spherical lug 8 and arranging the spherical groove in, spacing sand grip 9 and the mutual adaptation of spacing concave groove.
Through above-mentioned structure, realize that circumference is spacing through spacing sand grip 9 and the spacing recess of adaptation between thrust block 7 and the base, avoid producing relative circumferential direction between thrust block 7 and the base.
And a second limiting mechanism for limiting circumferential rotation is arranged between the lower friction plate 6 and the thrust block 7.
The second limiting mechanism comprises a positioning lug 10 arranged on the bottom surface of the lower friction plate 6 and a positioning groove arranged on the top surface of the thrust block 7, and the positioning lug 10 is matched with the positioning groove.
Through the structure, the lower friction plate 6 and the thrust block 7 can be prevented from rotating circumferentially relatively, so that the upper friction plate 5 can rotate stably relative to the lower friction plate 6.
The lower friction plate 6 is of a multi-petal structure, and the positioning lug 10 is arranged on the bottom surface of each petal of lower friction plate 6, so that each petal of lower friction plate 6 can be separately stressed, and the stability is better.
Be equipped with skeleton oil blanket 11 in the shaft hole, the shaft hole plays radial limiting displacement to motor shaft 2, and skeleton oil blanket 11 is used for increasing the lubrication between shaft hole and the motor shaft 2, reducing wear.
Still be equipped with on the outer wall of motor shaft 2 with skeleton oil blanket 11 complex ceramic coating, the porcelain is spouted to the outer wall of motor shaft 2 and is handled, plays further stand wear and tear effect through ceramic coating.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (3)
1. The utility model provides a multistage pump's motor limit structure, includes motor barrel (1), motor and motor shaft (2), and motor shaft (2) are all installed in motor barrel (1), its characterized in that: an upper connecting seat (3) and a lower connecting seat (4) which are connected with the pump body part are respectively arranged at two ends of the motor barrel (1), the upper connecting seat (3) and the lower connecting seat (4) respectively comprise shaft holes for a motor shaft (2) to pass through, and two ends of the motor shaft (2) are respectively connected with an impeller set in the pump body part; a thrust structure sleeved on the motor shaft (2) is arranged between the lower connecting seat (4) and the motor, the thrust structure comprises an upper friction plate (5), a lower friction plate (6) and a thrust seat (7) which are sequentially arranged from top to bottom, a spherical groove is arranged at the top end of the lower connecting seat (4), and a spherical convex block (8) matched with the spherical groove is arranged at the bottom surface of the thrust seat (7);
a first limiting mechanism used for limiting circumferential rotation is arranged between the spherical bump (8) and the spherical groove;
the first limiting mechanism comprises a limiting convex strip (9) positioned on the spherical bump (8) and a limiting groove arranged in the spherical groove, and the limiting convex strip (9) is matched with the limiting groove;
a second limiting mechanism used for limiting circumferential rotation is arranged between the lower friction plate (6) and the thrust block (7);
the second limiting mechanism comprises a positioning lug (10) arranged on the bottom surface of the lower friction plate (6) and a positioning groove arranged on the top surface of the thrust block (7), and the positioning lug (10) is matched with the positioning groove;
the lower friction plate (6) is of a multi-petal structure, and the positioning lug (10) is arranged on the bottom surface of each lower friction plate (6).
2. The motor limit structure of a multistage pump according to claim 1, wherein: and a framework oil seal (11) is arranged in the shaft hole.
3. The motor limit structure of a multistage pump according to claim 2, wherein: and the outer wall of the motor shaft (2) is also provided with a ceramic coating matched with the framework oil seal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331528.2A CN111503004B (en) | 2020-04-24 | 2020-04-24 | Motor limit structure of multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331528.2A CN111503004B (en) | 2020-04-24 | 2020-04-24 | Motor limit structure of multi-stage pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111503004A CN111503004A (en) | 2020-08-07 |
| CN111503004B true CN111503004B (en) | 2022-03-29 |
Family
ID=71873088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010331528.2A Active CN111503004B (en) | 2020-04-24 | 2020-04-24 | Motor limit structure of multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111503004B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967240A (en) * | 2015-07-22 | 2015-10-07 | 赵颖 | Submersible pump motor for well |
| CN108266383A (en) * | 2018-04-04 | 2018-07-10 | 天津格耐泵业有限公司 | A kind of sea water pump |
| CN108397395A (en) * | 2018-04-04 | 2018-08-14 | 天津格耐泵业有限公司 | A kind of multistage water supply pump applied to skyscraper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2874009C (en) * | 2013-12-10 | 2016-11-29 | Baker Hughes Incorporated | Spherical sleeve and bushing bearing for centrifugal pump stage |
-
2020
- 2020-04-24 CN CN202010331528.2A patent/CN111503004B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967240A (en) * | 2015-07-22 | 2015-10-07 | 赵颖 | Submersible pump motor for well |
| CN108266383A (en) * | 2018-04-04 | 2018-07-10 | 天津格耐泵业有限公司 | A kind of sea water pump |
| CN108397395A (en) * | 2018-04-04 | 2018-08-14 | 天津格耐泵业有限公司 | A kind of multistage water supply pump applied to skyscraper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111503004A (en) | 2020-08-07 |
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