CN113364189B - Integrated submersible pump motor bracket - Google Patents
Integrated submersible pump motor bracket Download PDFInfo
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- CN113364189B CN113364189B CN202110676632.XA CN202110676632A CN113364189B CN 113364189 B CN113364189 B CN 113364189B CN 202110676632 A CN202110676632 A CN 202110676632A CN 113364189 B CN113364189 B CN 113364189B
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- Prior art keywords
- casing
- driving
- rotor
- end cover
- rotary
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
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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
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of submersible pumps and discloses an integrated submersible pump motor bracket which comprises a casing, a first end cover and a second end cover which are respectively fixed at two ends of the casing, wherein a rotor is further arranged in the casing, the inner end of the rotor is rotationally connected with the inner side of the first end cover, the outer end of the rotor extends out of the second end cover, an inner cavity for installing a stator is further arranged in the casing, a plurality of installation shells are circumferentially fixed at the outer side of the casing, a notch is formed in one side, far away from the casing, of the installation shells, a supporting rod is rotationally arranged in the notch through a rotating shaft, the movable end of the supporting rod can rotationally extend out of the notch, the rotating shaft is driven by a driving mechanism, and the driving mechanism is a waterproof motor fixed on the installation shells. The invention has simple structure, can avoid the use of the submerged pump under the ground, ensures that the submerged pump works stably and reliably and is not easy to damage.
Description
Technical Field
The invention relates to the technical field of submersible pumps, in particular to an integrated submersible pump motor bracket.
Background
At present, a submersible pump is an important device for deep well water extraction. When in use, the whole unit is immersed into water for working, and the groundwater is extracted to the ground surface, which is domestic water, mine rescue, industrial cooling, farm irrigation, seawater lifting and ship load adjustment, and can be also suitable for extracting the groundwater from deep wells, and can also be used for water lifting projects such as rivers, reservoirs, channels and the like. The water pump is mainly used for farm irrigation and water for people and livestock in mountain areas, and can also be used for central air conditioning cooling, heat pump units, cold pump units, cities, factories, railways, mines and construction sites.
The submersible pump has no function of preventing sinking, and once the fixed rope falls off, the submersible pump is very difficult to salvage.
Disclosure of Invention
The present invention is directed to a solution to the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the integrated submersible pump motor support comprises a shell, a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively fixed at two ends of the shell, a rotor is further arranged in the shell, the inner end of the rotor is rotationally connected with the inner side of the first end cover, the outer end of the rotor extends out of the second end cover, and an inner cavity for installing a stator is further formed in the shell.
The outside circumference of casing is fixed with a plurality of installation shell, and one side that the installation shell was kept away from the casing has the breach, rotate through a pivot in the breach and install branch, the expansion end of branch can rotate and stretch out the breach, and the pivot is driven by actuating mechanism.
As a further improvement of the above, the driving mechanism is a waterproof motor fixed on the mounting case.
As a further improvement of the scheme, the driving mechanism comprises a gear fixedly sleeved on the outer side of the rotating shaft and a toothed plate meshed with the gear for transmission, a guide jack movably connected with the toothed plate is formed in the mounting shell, and the outer end of the toothed plate extends out of the guide jack and is connected with an external driving unit.
As the further improvement of above-mentioned scheme, the casing is close to one side of end cover one and has annular ladder groove, drive unit sets up in the ladder inslot, and drive unit includes the bracing piece with rotor parallel arrangement, rotate the column spinner of cup jointing in the bracing piece outside, bracing piece and ladder groove sliding connection, the outside of column spinner has the external screw thread, and the spiral has cup jointed movable sleeve, movable sleeve and pinion rack are fixed, and the bracing piece is along the radial of rotor in the ladder inslot's slip direction, and drive unit still includes the driving gear that sets up in the casing, driving gear and rotor are fixed cup joint, the perforation has been seted up to the tank bottom in ladder groove, perforation department rotation is provided with the drive gear with driving gear meshing, the opposite side and the column spinner transmission hookup of drive gear.
As a further improvement of the scheme, the outer side of the rotary column is provided with a meshing section, the outer surface of the meshing section is in a toothed column shape, the meshing section is in meshing transmission with the transmission gear, a bearing seat is movably sleeved on the outer side of one end of the rotary column, and the bottom of the bearing seat is connected with a push rod.
As a further improvement of the scheme, a through hole is formed in the bottom of the stepped groove, one end of the ejector rod penetrates through the through hole in a sliding mode and is connected with an adjusting mechanism, the adjusting mechanism is used for driving the ejector rod to lift, and the rotating column is lifted along with the ejector rod, so that the rotating column is meshed with or separated from the transmission gear.
As a further improvement of the scheme, the adjusting mechanism comprises a rotary table and a connecting rod, wherein the rotary table and the connecting rod are arranged in the shell in a rotary mode, one end of the connecting rod is rotationally connected with the eccentric part of the rotary table, the other end of the connecting rod is rotationally connected with the end part of the ejector rod, a driving shaft is coaxially fixed on one side of the rotary table, and a driving motor is arranged at the other end of the driving shaft to drive the driving shaft to rotate.
As a further improvement of the scheme, a first partition plate and a second partition plate are fixed inside the shell corresponding to the stepped groove, and the driving gear and the transmission gear are located between the first partition plate and the second partition plate.
As a further improvement of the scheme, an annular rotary groove is formed in the inner wall of one side of the stepped groove, a rotary ring is rotationally arranged in the rotary groove, a plurality of connecting plates are circumferentially fixed on the outer wall of the rotary ring, hanging rings are mounted at the tail ends of the connecting plates, and a traction rope is tethered to the hanging rings.
The beneficial effects of the invention are as follows:
the supporting rod capable of rotatably extending out of the installation shell can effectively prevent the submersible pump from sinking into the water when the submersible pump with the motor support provided by the scheme is used, so that the operation of the submersible pump is stable and reliable, and damage to the submersible pump is avoided.
According to the invention, the rotating column in the stepped groove rotates to drive the movable sleeve in threaded connection with the movable sleeve to move along the axial direction of the movable sleeve, so that the toothed plate is driven to slide, the toothed plate is meshed with the gear to drive the rotating shaft to rotate, and finally the supporting rod is driven to rotate and stretch out. And this scheme adopts the rotor as the power take off source, and indirect drive column spinner rotates, and the kinetic energy of rational utilization rotor avoids extra other power sources of installation for overall structure is simpler.
The adjusting mechanism is used for driving the ejector rod to lift so as to enable the rotary column to be meshed with or separated from the transmission gear, when the ejector rod is required to extend, the adjusting mechanism drives the rotary column to be meshed with the transmission gear, after the ejector rod rotates to a certain position after working for a period of time, the adjusting mechanism works and drives the transmission gear to be separated from the rotary column, and at the moment, the ejector rod can be kept to work at the position so as to prevent the submersible pump from sinking to cause working failure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a perspective view of a portion of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention as seen from one side of the first end cap;
FIG. 3 is a cross-sectional view at A-A of FIG. 2 in accordance with the present invention;
fig. 4 is a schematic cross-sectional view of a submersible pump motor bracket according to embodiment 1 of the present invention;
fig. 5 is a schematic cross-sectional view of a submersible pump motor bracket according to embodiment 2 of the present invention;
FIG. 6 is an enlarged view of FIG. 5B of the present invention
Fig. 7 is a schematic structural view of embodiment 3 of the present invention;
fig. 8 is a schematic structural view of embodiment 4 of the present invention;
fig. 9 is a schematic view of a part of the structure of the present invention.
In the figure: the device comprises a shell 1, an inner cavity 101, an end cover I2, an end cover II 3, a rotor 4, a mounting shell 5, a notch 501, a guide jack 502, a supporting rod 6, a rotating shaft 7, a first partition plate 71, a second partition plate 72, a stepped groove 8, a perforation 801, a toothed plate 9, a sliding block 10, a rotating column 11, a movable sleeve 12, a supporting rod 13, a transmission gear 14, a driving gear 15, a hanging ring 16, a connecting plate 17, a traction rope 18, a rotating ring 19, a rotating groove 20, a bearing seat 21, a top rod 22, a rotating disc 23, a connecting rod 24, a driving shaft 25 and a through hole 26.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
referring to fig. 1-4, the integrated submersible pump motor bracket comprises a casing 1, a first end cover 2 and a second end cover 3 which are respectively fixed at two ends of the casing 1, wherein a rotor 4 is further arranged in the casing 1, the inner end of the rotor 4 is rotationally connected with the inner side of the first end cover 2, the outer end of the rotor 4 extends out of the second end cover 3, and an inner cavity 101 for installing a stator is further formed in the casing 1.
The outside circumference of casing 1 is fixed with a plurality of installation shell 5, and one side that installation shell 5 kept away from casing 1 has breach 501, install branch 6 through a pivot 7 rotation in the breach 501, the expansion end of branch 6 can rotate and stretch out breach 501, and pivot 7 is driven by actuating mechanism.
As a further improvement of the above, the driving mechanism is a waterproof motor fixed to the mounting case 5.
The rotatable branch 6 that stretches out installation shell 5 that proposes in this scheme can prevent effectively that the immersible pump from sinking into the submarine when using the immersible pump that has the motor support that this scheme proposed for its job stabilization is reliable, avoids damaging the immersible pump.
Example 2:
referring to fig. 5-9, the integrated submersible pump motor bracket comprises a casing 1, a first end cover 2 and a second end cover 3 which are respectively fixed at two ends of the casing 1, wherein a rotor 4 is further arranged in the casing 1, the inner end of the rotor 4 is rotationally connected with the inner side of the first end cover 2, the outer end of the rotor 4 extends out of the second end cover 3, and an inner cavity 101 for installing a stator is further formed in the casing 1.
The outside circumference of casing 1 is fixed with a plurality of installation shell 5, and one side that installation shell 5 kept away from casing 1 has breach 501, install branch 6 through a pivot 7 rotation in the breach 501, the expansion end of branch 6 can rotate and stretch out breach 501, and pivot 7 is driven by actuating mechanism.
In this embodiment, unlike embodiment 1, the driving mechanism includes a gear fixedly sleeved on the outer side of the rotating shaft 7 and a toothed plate 9 meshed with the gear for transmission, a guiding jack 502 movably connected with the toothed plate 9 is provided on the mounting shell 5, and the outer end of the toothed plate 9 extends out of the guiding jack 502 and is connected with an external driving unit.
As a further improvement of the above scheme, the casing 1 has an annular stepped groove 8 near one side of the end cover 2, the driving unit is disposed in the stepped groove 8, and the driving unit includes a support rod 13 disposed parallel to the rotor 4, a rotating column 11 rotatably sleeved on the outer side of the support rod 13, the support rod 13 is slidably connected with the stepped groove 8, the outer side of the rotating column 11 has an external thread, and is spirally sleeved with a movable sleeve 12, the movable sleeve 12 is fixed with the toothed plate 9, and the sliding direction of the support rod 13 in the stepped groove 8 is along the radial direction of the rotor 4, and the driving unit further includes a driving gear 15 disposed in the casing 1, the driving gear 15 is fixedly sleeved with the rotor 4, a through hole 801 is formed in the bottom of the stepped groove 8, a transmission gear 14 meshed with the driving gear 15 is rotatably disposed at the through hole 801, and the other side of the transmission gear 14 is in transmission connection with the rotating column 11.
In this scheme, through the rotation of column 11 in the ladder groove 8, drive the movable sleeve 12 rather than threaded connection along its axial displacement to drive pinion rack 9 slip, pinion rack 9 and gear engagement, with the rotatory drive pivot 7, finally drive branch rotatory stretch out. In addition, the rotor 4 is adopted as a power output source, the rotary column 11 is indirectly driven to rotate, the kinetic energy of the rotor is reasonably utilized, and additional installation of other power sources is avoided, so that the whole structure is simpler.
Example 3:
referring to fig. 7, as a further improvement of the above-mentioned scheme, the outer side of the rotating column 11 has a meshing section, the outer surface of the meshing section is in a toothed column shape, the meshing section is meshed with the transmission gear 14 for transmission, a bearing seat 21 is movably sleeved at the outer side of one end of the rotating column 11, and a push rod 22 is connected to the bottom of the bearing seat 21. By the above structure, the operation of the spin column 11 is made more stable.
Example 4:
referring to fig. 8, as a further improvement of the above-mentioned scheme, a through hole 26 is formed at the bottom of the stepped groove 8, one end of the ejector rod 22 slides through the through hole 26 and is connected with an adjusting mechanism, the adjusting mechanism is used for driving the ejector rod 22 to lift, and the rotating column 11 follows the ejector rod 22 to lift, so that the rotating column 11 is engaged with or separated from the transmission gear 14.
Referring to fig. 8 and 9, the adjusting mechanism includes a turntable 23 rotatably disposed in the casing 1, and a connecting rod 24, wherein one end of the connecting rod 24 is rotatably connected to an eccentric portion of the turntable 23, the other end of the connecting rod 24 is rotatably connected to an end portion of the ejector rod 22, a driving shaft 25 is coaxially fixed to one side of the turntable 23, and a driving motor is mounted at the other end of the driving shaft 25 to drive the driving shaft 25 to rotate.
In this scheme, adjustment mechanism is used for driving ejector pin 2 for going up and down to make column spinner 11 and drive gear 14 meshing or separation, when needs branch stretch out, adjustment mechanism drive column spinner 11 and drive gear 14 meshing, after the work a period of time, after branch rotated certain position, adjustment mechanism work, drive gear and column spinner 11 separation, and the branch can keep working in this position this moment, in order to prevent that the immersible pump from sinking and leading to its work inefficacy.
Example 5:
as a further improvement of the above solution, a first partition 71 and a second partition 72 are fixed inside the casing 1 corresponding to the stepped groove 8, and the driving gear 15 and the driving gear 14 are located between the first partition 71 and the second partition 72. The provision of the first partition 71 and the second partition 72 can make the sealability in the housing of the present apparatus better.
In this scheme, annular gyration groove 20 has been seted up to the one side inner wall of ladder groove 8, and gyration groove 20 rotation is provided with gyration ring 19, and the outer wall circumference of gyration ring 19 is fixed with a plurality of connecting plates 17, and rings 16 are all installed to the end of every connecting plate 17, and rings 16 are gone up to tie down and are had the traction rope 18. Through the gyration groove 20 that sets up and rotate the gyration ring 19 of locating in the gyration groove 20, cooperation rings 16 and stay cord 18 for this device can be through the stay cord 18 protection when using, avoids connecting the cable conductor of immersible pump to be broken, and work is more stable.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Integration immersible pump motor support, be in including casing (1), respectively end cover one (2) and end cover two (3) at casing (1) both ends, still be equipped with rotor (4) in casing (1), the inboard rotation of inner and end cover one (2) of rotor (4) is connected, and the outer end of rotor (4) stretches out end cover two (3), still have in casing (1) inner chamber (101) of installation stator, its characterized in that:
a plurality of mounting shells (5) are circumferentially fixed on the outer side of the machine shell (1), a notch (501) is formed in one side, far away from the machine shell (1), of each mounting shell (5), a supporting rod (6) is rotatably mounted in each notch (501) through a rotating shaft (7), the movable end of each supporting rod (6) can rotatably extend out of each notch (501), and the rotating shafts (7) are driven by a driving mechanism;
the driving mechanism comprises a gear fixedly sleeved on the outer side of the rotating shaft (7) and a toothed plate (9) meshed with the gear for transmission, a guide jack (502) movably connected with the toothed plate (9) is formed in the mounting shell (5), and the outer end of the toothed plate (9) extends out of the guide jack (502) and is connected with an external driving unit;
the machine shell (1) is provided with an annular stepped groove (8) on one side close to the first end cover (2), the driving unit is arranged in the stepped groove (8) and comprises a supporting rod (13) which is arranged in parallel with the rotor (4), a rotating column (11) which is rotationally sleeved on the outer side of the supporting rod (13), the supporting rod (13) is in sliding connection with the stepped groove (8), the outer side of the rotating column (11) is provided with an external thread, a movable sleeve (12) is spirally sleeved on the outer side of the rotating column, the movable sleeve (12) is fixed with the toothed plate (9), the sliding direction of the supporting rod (13) in the stepped groove (8) is along the radial direction of the rotor (4), the driving gear (15) is fixedly sleeved with the rotor (4), a through hole (801) is formed in the bottom of the stepped groove (8), a transmission gear (14) which is meshed with the driving gear (15) is rotationally arranged at the position of the through hole (801), and the other side of the transmission gear (14) is in transmission connection with the rotating column (11);
the outer side of the rotary column (11) is provided with a meshing section, the outer surface of the meshing section is in a toothed column shape, the meshing section is meshed with a transmission gear (14) for transmission, a bearing seat (21) is movably sleeved at the outer side of one end of the rotary column (11), and the bottom of the bearing seat (21) is connected with a push rod (22);
a through hole (26) is formed in the bottom of the stepped groove (8), one end of the ejector rod (22) penetrates through the through hole (26) in a sliding mode and is connected with an adjusting mechanism, the adjusting mechanism is used for driving the ejector rod (22) to lift, and the rotary column (11) lifts along with the ejector rod (22) so that the rotary column (11) is meshed with or separated from the transmission gear (14);
the adjusting mechanism comprises a rotary table (23) and a connecting rod (24) which are rotatably arranged in the shell (1), one end of the connecting rod (24) is rotatably connected with the eccentric part of the rotary table (23), the other end of the connecting rod (24) is rotatably connected with the end part of the ejector rod (22), a driving shaft (25) is coaxially fixed on one side of the rotary table (23), and a driving motor is arranged at the other end of the driving shaft (25) to drive the driving shaft (25) to rotate.
2. The integrated submersible pump motor support of claim 1, wherein: the driving mechanism is a waterproof motor fixed on the mounting shell (5).
3. The integrated submersible pump motor support of claim 1, wherein: the driving gear (15) and the transmission gear (14) are both positioned between the first partition plate (71) and the second partition plate (72).
4. The integrated submersible pump motor support of claim 3, wherein: an annular rotary groove (20) is formed in the inner wall of one side of the stepped groove (8), a rotary ring (19) is rotationally arranged in the rotary groove (20), a plurality of connecting plates (17) are circumferentially fixed on the outer wall of the rotary ring (19), hanging rings (16) are mounted at the tail end of each connecting plate (17), and traction ropes (18) are tethered to the hanging rings (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110676632.XA CN113364189B (en) | 2021-06-18 | 2021-06-18 | Integrated submersible pump motor bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110676632.XA CN113364189B (en) | 2021-06-18 | 2021-06-18 | Integrated submersible pump motor bracket |
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| Publication Number | Publication Date |
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| CN113364189A CN113364189A (en) | 2021-09-07 |
| CN113364189B true CN113364189B (en) | 2023-06-30 |
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| CN202110676632.XA Active CN113364189B (en) | 2021-06-18 | 2021-06-18 | Integrated submersible pump motor bracket |
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| CN208734566U (en) * | 2018-08-21 | 2019-04-12 | 合肥凯泉电机电泵有限公司 | New construction explosion-proof type submersible pump |
| CN109742904A (en) * | 2018-11-28 | 2019-05-10 | 天津中蓝泵业有限责任公司 | A kind of submersible pump for being easy to radiate |
| WO2020168862A1 (en) * | 2019-02-18 | 2020-08-27 | 维沃移动通信有限公司 | Terminal device |
| DE102020104241A1 (en) * | 2019-02-20 | 2020-08-20 | Johnson Electric International AG | Electric oil pump |
| CN209704837U (en) * | 2019-03-12 | 2019-11-29 | 劳伦斯泵业机械(北京)有限公司 | The support construction of submersible progressive cavity pump |
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