CN113323850A - Deep well water pump fixing device - Google Patents
Deep well water pump fixing device Download PDFInfo
- Publication number
- CN113323850A CN113323850A CN202110636247.2A CN202110636247A CN113323850A CN 113323850 A CN113323850 A CN 113323850A CN 202110636247 A CN202110636247 A CN 202110636247A CN 113323850 A CN113323850 A CN 113323850A
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- Prior art keywords
- ring
- water pump
- deep well
- fixing
- well water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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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 invention provides a deep well water pump fixing device which comprises a fixing piece, wherein the fixing piece comprises a top end fixing ring and a bottom end fixing ring which are fixedly arranged on a deep well water pump; a first movable ring is arranged between the top end fixing ring and the bottom end fixing ring, and the first movable ring is sleeved on the deep well water pump; one end of the first group of telescopic fixing assemblies moving along the axial direction of the deep well water pump is connected with the top end fixing ring, and the other end of the first group of telescopic fixing assemblies is connected with the first movable ring; comprises a stay cord component which is arranged on the fixed part and matched with the first movable ring. The invention provides a deep well water pump fixing device, which can effectively reduce the collision between an underground water well and a deep well water pump when the deep well water pump submerges through the unique structural design, simultaneously prevent the deep well water pump from touching a deep well when the deep well water pump is started, prolong the service life of the whole deep well water pump, and simultaneously reduce the rupture of the whole cable, a pull rope or a water pipe.
Description
Technical Field
The invention relates to the technical field of submersible pump installation, in particular to a deep well water pump fixing device.
Background
The deep well water pump is characterized in that a motor and a pump are integrated into a whole, the deep well water pump is immersed in an underground well for pumping and conveying water, and is widely applied to farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, sewage treatment and the like.
At present, a deep well water pump drives a water wheel to turn water upwards by a rotor in a motor in the water lifting process, the rotation of the rotor has a strong reverse thrust to a stator of the motor, the stator and an outer shell of the submersible pump are fixed into a whole, and the pump can generate large swing and axial float due to large changes of axial force and radial force of the pump, so that the pump can impact a well wall, wear a pull rope, a cable and a water outlet pipe, the service life of the submersible pump is shortened, and certain dangerousness exists when the cable, the pull rope or the water pipe is broken; meanwhile, when the existing water pump is placed into an underground water well, particularly a deep well, the existing water pump is easy to collide with the well wall of the underground water well in the submerging process due to the fact that the depth of the underground water well is too high, and damage is caused to the deep well water pump.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a deep well water pump fixing device which is reasonable in design, safe and reliable.
The technical scheme adopted by the invention for solving the technical problems is as follows: a deep well water pump fixing device comprises a fixing piece, wherein the fixing piece comprises a top end fixing ring fixedly arranged at the top end of a deep well water pump and a bottom end fixing ring fixedly arranged at the bottom end of the deep well water pump; a first movable ring is arranged between the top end fixing ring and the bottom end fixing ring, and the first movable ring is sleeved on the deep well water pump; the first group of telescopic fixing assemblies are telescopic along the axial direction of the deep well water pump, one end of each first group of telescopic fixing assemblies is connected with the top end fixing ring, the other end of each first group of telescopic fixing assemblies is connected with the first movable ring, and the first group of telescopic fixing assemblies are in contact with the deep well; the pull rope assembly is arranged on the fixing piece and matched with the first movable ring, and comprises a fixed rope and a sliding wheel arranged on the bottom end fixing ring.
Specifically, the two ends of the fixed rope are respectively fixedly connected with the two ends of the top and the bottom of the first fixed ring, and the fixed rope passes through the sliding wheel and is fixedly connected with the first movable ring at one end fixedly connected with the bottom end of the first movable ring.
Preferably, the top end fixing ring is provided with a plurality of fixing bolts along the circumferential direction of the top end fixing ring, and the fixing bolts are in contact with the deep well water pump.
Preferably, the end part of one end of the fixing bolt, which is in contact with the deep well water pump, is provided with a wear-resisting plate, and a wear-resisting pattern is arranged on the contact surface of the wear-resisting plate.
The fixed part comprises a plurality of guide plates arranged along the circumferential direction of the top end fixing ring, and two ends of each guide plate are respectively and fixedly connected with the top end fixing ring and the bottom end fixing ring.
Furthermore, a guide groove is formed in the guide plate, and a guide block matched with the guide groove is arranged on the inner annular wall of the first movable ring 3 and corresponds to the guide groove.
The invention is particularly characterized in that the first group of telescopic fixing components comprises a first fixing rod hinged with the top end fixing ring, a second fixing rod hinged with the first movable ring, and a connecting plate hinged with the first fixing rod and the second fixing rod respectively, and the connecting plate is in contact with the deep well.
The stay cord subassembly is including setting up fixed block on the first movable ring, the top surface of fixed block is seted up two and is run through the fixed orifices of fixed block, the axis of fixed orifices with the axis of first movable ring is parallel, the movable pulley sets up under the fixed block.
The stay cord subassembly is including setting up the solid piece on the solid fixed ring of bottom, the top surface of solid piece is seted up two and is run through firm fast firm hole, the axis in firm hole with the solid fixed ring axis in top is parallel, the solid piece sets up directly over the fixed block.
Furthermore, the deep well water pump fixing device comprises a plurality of groups of guide assemblies arranged on the fixing piece, and the guide assemblies move along the axial direction of the deep well water pump.
The guide assembly comprises a plurality of first lantern rings arranged on the top end fixing ring, a plurality of second lantern rings arranged on the bottom end fixing ring, and a plurality of guide pieces, wherein two ends of the guide pieces are respectively connected with the first lantern rings and the second lantern rings; correspondingly, a sliding part matched with the guide piece is arranged on the first movable ring.
The mounting is still including setting up the solid fixed ring in top the solid fixed ring in middle-end between the solid fixed ring in bottom sets up the solid fixed ring in middle-end with the solid second activity ring between the solid fixed ring in bottom, first activity ring sets up the solid fixed ring in top with between the solid fixed ring in middle-end.
The stay cord subassembly is still including setting up on the solid fixed ring of middle-end, and be located run through the piece under the fixed block to and the stay cord, stay cord one end with first activity ring bottom is connected, the other end with second activity ring top is connected.
Including setting up the solid fixed ring of well end the flexible fixed subassembly of second group between the second movable ring, the flexible fixed subassembly of second is followed the axis direction of deep-well water pump is flexible, the flexible fixed subassembly of second group one end with the solid fixed ring of well end is connected, the other end with the second movable ring is connected.
According to the invention, through the unique structural arrangement, the water pump is fixed through the matching between the fixing piece and the plurality of groups of telescopic fixing assemblies, the submersible pump is placed in the fixing piece, and the first fixing rod, the second fixing rod and the connecting plate in the telescopic fixing assemblies are movably connected, so that the fixation work of the submersible pump is effectively realized, and the structure is simple, and the time and the labor are saved.
According to the invention, through the structural design of the pull rope assembly, the control of the telescopic fixing assembly can be realized at a well mouth, so that the stability of the deep well water pump is realized, the contact between the deep well water pump and a deep well is prevented when the deep well water pump is started, the service life of the whole deep well water pump is prolonged, and the condition that the whole cable, the pull rope or the water pipe is broken is also reduced.
When the deep well water pump submergence device is used, due to the existence of the whole telescopic fixing assembly, when the deep well water pump submergence is carried out, the collision between an underground water well and the deep well water pump can be effectively reduced, further, the damage to the deep well water pump is reduced, and the service life of the deep well water pump is prolonged.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is an enlarged view of the structure at A of the present invention;
FIG. 3 is an enlarged view of the structure at B of the present invention;
FIG. 4 is an enlarged view of the structure at C of the present invention;
FIG. 5 is an enlarged view of the structure at D of the present invention;
FIG. 6 is a schematic top view of the present invention;
FIG. 7 is a cross-sectional view of the tip retaining ring of the present invention;
FIG. 8 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 9 is a schematic top view of the preferred embodiment of the present invention;
wherein the reference numerals are: 1. a fixing member; 101. a top end fixing ring; 102. a bottom end fixing ring; 103. a middle end fixing ring; 2. a deep well water pump; 3. a first movable ring; 301. a guide block; 302. a sliding part; 4. a first set of telescoping fixed components; 401. a first fixing lever; 402. a second fixing bar; 403. a connecting plate; 5. a pull cord assembly; 501. fixing a rope; 502. a sliding wheel; 6. a guide plate; 601. a guide groove; 7. fixing the screw rod; 701. a wear plate; 8. a first fixed block; 801. a first fixing hole; 9. a stabilizing block; 901. a stabilizing hole; 10. a guide assembly; 1001. a first collar; 1002. a second collar; 1003. a guide member; 11. a second movable ring; 12. a second set of telescoping fixed components; 13. a contact member; 1301. a contact plate; 1302. adjusting the screw rod; 14. a through block; 1401. a through hole; 15. pulling a rope; 16. a second fixed block; 1601. and a second fixing hole.
Detailed Description
Example one
Referring to fig. 1 to 7, the present embodiment is a deep well water pump fixing device, including a fixing member 1, the fixing member including a top end fixing ring 101 fixedly disposed at a top end of a deep well water pump 2, and a bottom end fixing ring 102 fixedly disposed at a bottom end of the deep well water pump; a first movable ring 3 is arranged between the top end fixing ring and the bottom end fixing ring, and the first movable ring 3 is sleeved on the deep well water pump; the first group of telescopic fixing assemblies 4 extend and retract along the axial direction of the deep well water pump, one ends of the first group of telescopic fixing assemblies are connected with the top end fixing ring 101, the other ends of the first group of telescopic fixing assemblies are connected with the first movable ring 3, and the first group of telescopic fixing assemblies are in contact with a deep well; the setting is in on the mounting, and with first activity ring cooperation has stay cord subassembly 5, the stay cord subassembly includes fixed rope 501, the both ends of fixed rope 501 respectively with top, the end both ends fixed connection of first activity ring 3, and set up the last movable pulley 502 of the solid fixed ring in bottom, fixed rope 501 with first activity ring bottom fixed connection's one end process the movable pulley, and with first activity ring 3 fixed connection.
Preferably, the top end fixing ring is provided with a plurality of fixing screw rods 7 along the circumferential direction, and the fixing bolts are in contact with the deep well water pump.
Preferably, the end part of the end of the fixing bolt contacting the deep well water pump is provided with a wear-resisting plate 701, and the contact surface of the wear-resisting plate is provided with wear-resisting patterns.
Preferably, the first group of telescopic fixing assemblies comprise a plurality of telescopic fixing assemblies and are evenly arranged along the circumferential direction of the deep well water pump.
Preferably, the telescopic fixing assembly is provided with three.
The fixing piece is characterized by comprising a plurality of guide plates 6 arranged along the circumferential direction of the top end fixing ring, and two ends of each guide plate 6 are fixedly connected with the top end fixing ring 101 and the bottom end fixing ring 102 respectively.
Further, a guide groove 601 is formed in the guide plate, and correspondingly, a guide block 301 matched with the guide groove is arranged on the inner annular wall of the first movable ring 3.
Preferably, a guide rod is arranged in the guide groove, and in cooperation with the guide rod, the guide block is provided with a guide hole matched with the guide rod.
The invention is further characterized in that the first group of telescopic fixing components 4 comprises a first fixing rod 401 hinged with the top end fixing ring, a second fixing rod 402 hinged with the first movable ring, and a connecting plate 403 hinged with the first fixing rod and the second fixing rod respectively, wherein the connecting plate is in contact with the deep well.
The connecting plate is provided with a contact element 13 which is in contact with the deep well.
Preferably, the contact piece comprises a contact plate 1301, and the contact surface of the contact plate is provided with wear-resistant grains.
Preferably, the contact element further comprises an adjusting screw 1302 arranged on the base plate, and is matched with the base plate, and an adjusting hole is arranged on the connecting plate.
The invention is characterized in that the pull rope assembly comprises a first fixed block 8 arranged on the first movable ring, the top surface of the fixed block is provided with two first fixed holes 801 penetrating through the fixed block, the axes of the fixed holes are parallel to the axis of the first movable ring, and the sliding wheel 502 is arranged right below the first fixed block 8.
The pull rope assembly comprises a stabilizing block 9 arranged on the top end fixing ring, two stabilizing holes 901 penetrating through the top surface of the stabilizing block are formed in the top surface of the stabilizing block, the axis of each stabilizing hole is parallel to the axis of the top end fixing ring, and the stabilizing block 9 is arranged right above the first fixing block 8.
Preferably, the fixing hole and the stabilizing hole are both arranged along the radial direction of the deep well water pump.
Specifically, the one end of fixed rope run through in on the stabilizing block be close to the solid fixed ring's in top firm hole, and with the connecting hole fixed connection who is close to this first activity ring on the first activity ring, the other end of fixed rope runs through another firm hole in proper order, another fixed orifices, and is close to connecting hole fixed connection on the activity ring via movable pulley and this fixed block.
The invention is characterized in that the invention also comprises a plurality of groups of guide components 10 arranged on the fixed part, the guide components move along the axial direction of the deep well water pump, the guide components comprise a plurality of first lantern rings 1001 arranged on the top end fixed ring, a plurality of second lantern rings 1002 arranged on the bottom end fixed ring, and a plurality of guide parts 1003 with two ends respectively connected with the first lantern rings and the second lantern rings; correspondingly, a sliding part 302 matched with the guide piece is arranged on the first movable ring.
Preferably, the fixed block, the stable block and the sliding wheel are respectively welded on the top end fixing ring, the bottom end fixing ring and the movable ring by utilizing a welding technology and using a full-length welding process.
Preferably, the stabilizing block and the sliding wheel are detachably connected with the top end portion fixing ring, the bottom end portion fixing ring and the movable ring respectively.
Specifically, the top end fixing ring, the bottom end fixing ring and the movable ring are provided with mounting threaded holes which are matched with the mounting threaded holes, and the stabilizing block, the stabilizing block and the sliding wheel are provided with mounting bolts matched with the mounting threaded holes.
Example two
Referring to fig. 8 to 9, the basic structure of the present embodiment is the same as the implementation structure, and is different from the first embodiment in that: the mounting is still including setting up the solid fixed ring in top the solid fixed ring in middle-end 103 between the solid fixed ring in bottom sets up the solid fixed ring in middle-end with the solid second activity ring 11 between the solid fixed ring in bottom, first activity ring 3 sets up the solid fixed ring in top 101 with between the solid fixed ring in middle-end 103.
The fixing mode of the middle-end fixing ring and the deep-well water pump is consistent with that of the top-end fixing ring, and the fixing bolts are adopted for reinforcement.
The invention is particularly characterized in that the pull rope assembly further comprises a penetrating block 14 and a pull rope 15, wherein the penetrating block 14 is arranged on the middle end fixing ring 103 and is positioned right below the first fixing block 8, one end of the pull rope 15 is connected with the bottom end of the first movable ring 3, and the other end of the pull rope 15 is connected with the top end of the second movable ring 11.
A second fixed block 16 is arranged on the second movable ring, a second fixed hole 1601 penetrating through the second fixed block is formed in the top surface of the second fixed block, the axis of the second fixed hole is parallel to the axis of the second movable ring, and two through holes 1401 penetrating through the penetrating block are formed in the top surface of the penetrating block along the radial direction of the middle-end fixed ring; specifically, one end of the pull rope is fixedly connected with the bottom end of the first fixed hole of the first movable ring, and the other end of the pull rope penetrates through a through hole 1401 close to the middle-end fixed ring and is fixedly connected with the top end of the second fixed hole of the second movable ring; and one end of the fixed rope penetrates through the stable hole close to the top end fixing ring and is fixedly connected with the top end of the first fixed hole of the first movable ring, and the other end of the fixed rope penetrates through another stable hole, another first fixed hole, another through hole and the second fixed block in sequence and is far away from the second fixed hole on the second movable ring and is fixedly connected with the bottom end of the through hole of the second movable ring through the sliding wheel.
Further, including setting up the solid fixed ring of middle-end 103 the flexible fixed subassembly 12 of second group between the second loose ring 11, the flexible fixed subassembly of second is followed the axis direction of deep-well water pump is flexible, the flexible fixed subassembly of second group one end with the solid fixed ring of middle-end 103 is connected, the other end with the second loose ring 11 is connected.
Preferably, the second group of telescopic fixing assemblies comprise a plurality of telescopic fixing assemblies which are uniformly arranged along the circumferential direction of the deep well water pump.
Preferably, the telescopic fixing assembly is provided with three.
Furthermore, when the deep well water pump dives, the abrasion of the whole fixing rope is reduced, and particularly, the abrasion of the fixing rope is caused at the sliding wheel at the bottom end of the whole deep well water pump due to the unique position relation of the fixing rope, the sliding wheel is damaged, and the whole telescopic fixing assembly cannot work; therefore, a shield is provided at the sliding wheel.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a deep-well water pump fixing device which characterized in that: the device comprises a fixing piece (1), wherein the fixing piece comprises a top end fixing ring (101) fixedly arranged at the top end of a deep well water pump (2) and a bottom end fixing ring (102) fixedly arranged at the bottom end of the deep well water pump;
a first movable ring (3) is arranged between the top end fixing ring and the bottom end fixing ring, and the first movable ring is sleeved on the deep well water pump;
the first group of telescopic fixing assemblies (4) move along the axial direction of the deep well water pump, one ends of the first group of telescopic fixing assemblies are connected with the top end fixing ring (101), the other ends of the first group of telescopic fixing assemblies are connected with the first movable ring (3), and the first group of telescopic fixing assemblies are in contact with the deep well;
the pull rope assembly (5) is arranged on the fixed piece and matched with the first movable ring, and comprises a fixed rope (501) and a sliding wheel (502) arranged on the bottom end fixing ring.
2. The deep well water pump fixture of claim 1, wherein: the mounting includes along a plurality of deflector (6) that the solid fixed ring circumference in top set up, the both ends of deflector (6) respectively with solid fixed ring (101) in top the solid fixed ring (102) fixed connection in bottom.
3. The deep well water pump fixture of claim 2, wherein: the first group of telescopic fixing assemblies (4) comprises a first fixing rod (401) hinged with the top end fixing ring, a second fixing rod (402) hinged with the first movable ring, and a connecting plate (403) hinged with the first fixing rod and the second fixing rod respectively, and the connecting plate is in contact with the deep well.
4. The deep well water pump fixture of claim 1, wherein: the stay cord subassembly is including setting up first fixed block (8) on the first activity ring, two fixed orificess (801) of running through the fixed block are seted up to the top surface of first fixed block, the axis of fixed orificess with the axis of first activity ring is parallel, movable pulley (502) set up under fixed block (8).
5. The deep well water pump fixture of claim 4, wherein: the rope pulling assembly comprises a stabilizing block (9) arranged on the bottom end fixing ring, two stabilizing holes (901) penetrating through the stabilizing block are formed in the top surface of the stabilizing block, the axis of each stabilizing hole is parallel to the axis of the top end fixing ring, and the stabilizing block (9) is arranged right above the first fixing block (8).
6. The deep well water pump fixture of claim 1, wherein: the deep well water pump comprises a plurality of groups of guide assemblies (10) arranged on the fixing piece, and the guide assemblies move along the axial direction of the deep well water pump.
7. The deep well water pump fixture of claim 6, wherein: the guide assembly comprises a plurality of first lantern rings (1001) arranged on the top end fixing ring, a plurality of second lantern rings (1002) arranged on the bottom end fixing ring, and a plurality of guide pieces (1003) of which two ends are respectively connected with the first lantern rings and the second lantern rings; correspondingly, a sliding part (302) matched with the guide piece is arranged on the first movable ring.
8. The deep well water pump fixture of claim 1, wherein: the mounting is still including setting up the solid fixed ring in top the solid fixed ring in middle-end (103) between the solid fixed ring in bottom, the setting is in the solid fixed ring in middle-end with the solid second activity ring (11) between the solid fixed ring in bottom, first activity ring (3) set up solid fixed ring in top (101) with between the solid fixed ring in middle-end (103).
9. The deep well water pump securing device of claim 8, wherein: the stay cord subassembly is still including setting up on the solid fixed ring of middle-end (103), and be located run through piece (14) under first fixed block (8), set up on the solid fixed ring of second, and be located run through second fixed block (16) under the piece to and stay cord (15), stay cord (504) one end with first activity ring (3) bottom is connected, the other end with second activity ring (11) top is connected.
10. The deep well water pump securing device of claim 9, wherein: including setting up solid fixed ring of well end (103) the flexible fixed subassembly of second group (12) between second activity ring (11), the flexible fixed subassembly of second is followed the axis direction of deep-well water pump is flexible, the flexible fixed subassembly of second group one end with gu fixed ring of well end (103) is connected, the other end with second activity ring (11) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636247.2A CN113323850B (en) | 2021-06-08 | 2021-06-08 | Deep well water pump fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636247.2A CN113323850B (en) | 2021-06-08 | 2021-06-08 | Deep well water pump fixing device |
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| Publication Number | Publication Date |
|---|---|
| CN113323850A true CN113323850A (en) | 2021-08-31 |
| CN113323850B CN113323850B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110636247.2A Active CN113323850B (en) | 2021-06-08 | 2021-06-08 | Deep well water pump fixing device |
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| CN111852957A (en) * | 2020-07-24 | 2020-10-30 | 赵玉会 | Using method of submersible pump downhole auxiliary equipment |
| CN111946654A (en) * | 2020-08-25 | 2020-11-17 | 赣州市闻誉科技有限公司 | Anticollision positioning device on submersible pump for well |
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| CN113323850B (en) | 2023-09-01 |
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