CN114658669A

CN114658669A - Oil-immersed submersible pump

Info

Publication number: CN114658669A
Application number: CN202210497525.5A
Authority: CN
Inventors: 庄垚垚; 刘敬平
Original assignee: Jiangsu Qiyan Pump Co ltd
Current assignee: Jiangsu Qiyan Pump Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-06-24

Abstract

The invention discloses an oil-immersed submersible pump which comprises a working area, a water inlet structure and a driving structure, wherein the working area is protected by a spliced working area shell, a water inlet is formed in the top end of the working area shell, the bottom end of the working area shell is connected with the water inlet structure, the working area comprises a working area rotating shaft, a water pumping impeller and a diffuser, the bottom end of the water inlet structure is connected with the driving structure, a base is arranged at the bottom end of the driving structure, and a motor structure which is used for cooling oil in a circulating mode is arranged in the driving structure. The invention can realize a multi-section splicing structure, is simple and convenient to install, and can be disassembled subsequently to be respectively overhauled or replaced; the motor part adopts a full-sealing structure, and is reasonable in design and durable; the working area that draws water adopts solitary pivot, and can select the quantity of impeller that draws water to assemble according to the actual demand, the various occasions of adaptation that can be better.

Description

Oil-immersed submersible pump

Technical Field

The invention relates to the technical field of submersible pumps, in particular to an oil-immersed submersible pump.

Background

The submersible pump is an important device for pumping water from a deep well, when in use, the whole unit is submerged into water to work, and the underground water is pumped to the ground surface, so that the submersible pump is a common device for domestic water, mine emergency rescue, industrial cooling, farmland irrigation, seawater lifting and ship load adjustment, and can also be used for fountain landscape; the submersible pumps are classified by coils in the motor, and are of an oil immersion type, a water immersion type or a dry type, wherein the oil immersion type submersible pump has the advantages of low temperature rise, long service life and the like, and is also a common submersible pump at present.

The existing oil-immersed submersible pump is usually of a fixed model type, the using environment and conditions of the oil-immersed submersible pump have certain limitations, and the oil-immersed submersible pump is usually of a matched assembly type structure, although the structure is compact, the oil-immersed submersible pump and the motor can not be separated after the motor and the pump body are assembled, and once a problem occurs, the oil-immersed submersible pump is inconvenient to maintain and needs to be directly replaced, and the maintenance cost is too high.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide an oil-immersed submersible pump which can be of a multi-section splicing structure, is simple and convenient to install, and can be subsequently disassembled to be respectively overhauled or replaced; the motor part adopts a full-sealing structure, and is reasonable in design and durable; the working area that draws water adopts solitary pivot, and can select the quantity of impeller that draws water to assemble according to actual demand, the various occasions of adaptation that can be better.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to an oil-immersed submersible pump, which comprises a water outlet, a working area shell, a water inlet structure and a driving structure, wherein the working area shell comprises a top shell and a plurality of groups of spliced shells, the top shell and the spliced shells are respectively provided with a top end cover, the bottom end of the top end cover is provided with a main shell, reinforcing ribs are arranged between the top end cover and the main shell, the top end surface of the top shell is provided with the water outlet, the top end surface of the spliced shell is provided with a hollow boss, the water inlet structure comprises a water inlet cover and a protective net, the bottom end of the working area shell is provided with the water inlet cover, the outer part of the water inlet cover is sleeved with the protective net, the driving structure comprises a motor shell, a stator and a rotor, the bottom end of the water inlet cover is connected with the motor shell, the bottom end of the motor shell is provided with a liquid storage cavity, and the stator is arranged in the motor shell, the inside of stator is provided with the rotor, motor housing's bottom surface is encircleed and is provided with inlet opening and apopore, the inlet opening is located the stator outside, the apopore is located inside the stator, the bottom of rotor is provided with the fixed block, the top of rotor is provided with motor power, the inside of rotor is provided with the initiative pivot, motor power cup joints the surface in the initiative pivot, be provided with the axle sleeve between rotor and the fixed block, the bottom of fixed block is provided with heat dissipation impeller, the inside of workspace shell is provided with the workspace pivot, impeller and diffuser have been drawn water to the surface cup joint of workspace pivot.

As a preferred technical scheme of the invention, the main shell comprises a hollow round table and a hollow cylindrical base, wherein the inner surface of the hollow cylindrical base and the outer surface of the hollow boss are respectively provided with matched occlusion threads and are connected through the occlusion threads.

As a preferred technical scheme of the invention, the water inlet cover comprises a top end connecting frame, a water filter screen and a mounting base, wherein the outer surface of the top end connecting frame is provided with threads and matched with the occluded threads at the bottom end of the spliced shell, the bottom end of the top end connecting frame is provided with the water filter screen, the outer surface of the water filter screen is provided with a plurality of groups of filter holes, the bottom end of the water filter screen is provided with the mounting base, and the mounting base is of a solid structure and is connected with the driving structure.

As a preferred technical scheme of the invention, a plurality of groups of fixing baffles are arranged on the periphery of the top end surface of the motor shell, the fixing baffles are matched with the mounting base, bolt holes are formed in the top end surface of the motor shell, the mounting base is fixedly connected with the motor shell through bolts, and the bolts are sealed by sealing rings.

As a preferred technical scheme of the invention, a sealing top cover is arranged at the top end of the water outlet, a sealing block is embedded on the top end surface of the motor shell, the sealing block is sleeved on the outer surface of the driving rotating shaft, and the motor shell and the liquid storage cavity at the lower end are integrally designed.

As a preferred technical scheme of the invention, four reinforcing ribs are arranged and equally arranged on the outer surface of the main shell in a surrounding manner, and the top ends of the reinforcing ribs are welded and fixed with the top end cover.

As a preferred technical scheme of the invention, the outer surface of the fixed block is connected with the stator through four fixed shafts, and the four fixed shafts are arranged on the outer surface of the fixed block in an evenly-distributed surrounding manner.

As a preferred technical solution of the present invention, the diffuser is disposed outside the pumping impeller, and the diffuser and the pumping impeller correspond to each other one by one, and both the diffuser and the pumping impeller are disposed inside the spliced casing.

As a preferred technical scheme of the invention, the water outlet, the working area shell and the motor shell are all made of stainless steel materials, and the protective net is made of aluminum alloy materials.

As a preferred technical scheme of the invention, the top end of the driving rotating shaft penetrates through the water inlet structure, and the top end of the driving rotating shaft is connected with the bottom end of the rotating shaft in the working area through the coupler.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the independent rotating shaft of the working area is matched with the detachable pumping impeller and the diffuser to pump water, the spliced working area shell is adopted for protection, and the number of the pumping impellers can be selected according to the requirement of the actual situation, so that the pumping requirements under different depth conditions are met.

2. The motor structure is completely sealed, so that cooling oil in the motor can be well prevented from leaking, external water is not only the motor, the internal structure of the motor can be well protected, and the motor structure is reasonable in design and is durable and difficult to use.

3. The submersible pump is formed by splicing a multi-section structure, each part can be independently spliced and disassembled, when the submersible pump works in a problem, the corresponding damaged structure can be independently disassembled and maintained according to the problem, and the submersible pump is very convenient and low in maintenance cost.

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 specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the workspace enclosure structure of the present invention;

FIG. 3 is a cross-sectional view of a workspace configuration of the present invention;

FIG. 4 is an exploded view of the water intake structure of the present invention;

FIG. 5 is a schematic view of the interior of the drive structure of the present invention;

in the figure: 1. a water outlet; 2. a workspace enclosure; 3. a top housing; 4. a spliced shell; 5. a water inlet structure; 6. a drive structure; 7. a base; 8. a top end cap; 9. a main housing; 10. reinforcing ribs; 11. a hollow boss; 12. a water inlet cover; 13. a protective net; 14. a motor housing; 15. a liquid storage cavity; 16. a stator; 17. a rotor; 18. a water inlet hole; 19. a water outlet hole; 20. a fixed block; 21. a driving rotating shaft; 22. a shaft sleeve; 23. a heat dissipation impeller; 24. a water pumping impeller; 25. a diffuser; 26. a working area rotating shaft; 27. sealing the top cover; 28. engaging the threads; 29. a top connection frame; 30. a water filtering net; 31. installing a base; 32. fixing a baffle plate; 33. a sealing block; 34. a fixed shaft; 35. and a motor power supply.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Wherein like reference numerals refer to like parts throughout.

Example 1

As shown in fig. 1-5, the invention provides an oil-immersed submersible pump, which comprises a water outlet 1, a working area housing 2, a water inlet structure 5 and a driving structure 6, wherein the working area housing 2 comprises a top housing 3 and a plurality of groups of spliced housings 4, the top housing 3 and the spliced housings 4 are both provided with top end covers 8, the bottom ends of the top end covers 8 are provided with main housings 9, reinforcing ribs 10 are arranged between the top end covers 8 and the main housings 9, the top end surface of the top housing 3 is provided with the water outlet 1, the top end surface of the spliced housing 4 is provided with a hollow boss 11, the water inlet structure 5 comprises a water inlet cover 12 and a protective net 13, the bottom end of the working area housing 2 is provided with the water inlet cover, the outside of the water inlet cover 12 is sleeved with the protective net 13, the driving structure 6 comprises a motor housing 14, a stator 16 and a rotor 17, the bottom end of the water inlet cover 12 is connected with the motor housing 14, the bottom end of the motor housing 14 is provided with a liquid storage cavity 15, motor housing 14's inside is provided with stator 16, stator 16's inside is provided with rotor 17, motor housing 14's bottom surface encircles and is provided with inlet opening 18 and apopore 19, inlet opening 18 is located stator 16 outside, apopore 19 is located inside stator 16, rotor 17's bottom is provided with fixed block 20, rotor 17's top is provided with motor power 35, rotor 17's inside is provided with initiative pivot 21, motor power 35 cup joints the surface at initiative pivot 21, be provided with axle sleeve 22 between rotor 17 and the fixed block 20, the bottom of fixed block 20 is provided with heat dissipation impeller 23, the inside of workspace shell 2 is provided with workspace pivot 26, impeller 24 and diffuser 25 have been cup jointed to the surface of workspace pivot 26.

Further, the main casing 9 includes a hollow circular truncated cone and a hollow cylindrical base, and the inner surface of the hollow cylindrical base and the outer surface of the hollow boss 11 are both provided with matching engaging threads 28 and are connected through the engaging threads 28, and the threaded connection is convenient and reliable.

The cover 12 of intaking includes top connection frame 29, water strainer 30 and installation base 31, and the surface of top connection frame 29 is provided with the screw thread, and cooperatees with the interlock screw thread 28 of 4 bottoms of concatenation formula shells, and the bottom of top connection frame 29 is provided with water strainer 30 for filter some impurity when absorbing water, and water strainer 30's surface is provided with the multiunit and filters the hole, and water strainer 30's bottom is provided with installation base 31, and installation base 31 is solid construction, and links to each other with drive structure 6.

The periphery of the top surface of motor housing 14 is provided with multiunit fixed stop 32, and fixed stop 32 cooperatees with installation base 31, and motor housing 14's top surface is provided with the bolt hole, and installation base 31 passes through bolt fixed connection with motor housing 14, and bolt department adopts the sealing washer to seal, and sealing treatment prevents to intake from motor housing 14 top.

The top of delivery port 1 is provided with seal cap 27, and the top surface of motor housing 14 is rabbeted and is had sealed piece 33, and sealed piece 33 cup joints the surface at initiative pivot 21, and motor housing 14 adopts the integrated design with the stock solution chamber 15 of low side, wholly constitutes airtight structure, prevents that motor housing 14 is inside to be intake.

The strengthening rib 10 is provided with four, and the equipartition encircles and sets up in main casing body 9 surface, and the top and the 8 welded fastening of top end cover of strengthening rib 10 guarantee main casing body 9 and 8 firm in connection of top end cover.

The outer surface of the fixed block 20 is connected to the stator 16 by a fixed shaft 34, and four fixed shafts 34 are equally disposed around the outer surface of the fixed block 20 to fix the fixed block 20.

The diffuser 25 is disposed outside the pumping impeller 24, the diffusers 25 correspond to the pumping impellers 24 one by one, and both the diffusers 25 and the pumping impellers 24 are disposed inside the spliced casing 4.

The water outlet 1, the working area shell 2 and the motor shell 14 are all made of stainless steel materials, the protective net 13 is made of aluminum alloy materials, and the materials are low in price, waterproof and durable.

The top end of the driving rotating shaft 21 penetrates through the water inlet structure 5, and the top end of the driving rotating shaft 21 is connected with the bottom end of the working area rotating shaft 26 through a coupler.

Specifically, the structures of the oil-immersed submersible pump are fixedly connected through bolts and threads for assembly, the demand of the pumping impeller 24 is planned according to the depth during operation, so that the number of the diffusers 25 and the spliced shells 4 is determined, the working area rotating shafts 26 with the corresponding length are selected after the determination, the working area rotating shafts 26 are connected with the active rotating shaft 21 through the couplers, the pumping impeller 24 and the diffusers 25 are sleeved at the corresponding positions, the spliced shells 4 are assembled one by one, finally the top shell 3 is assembled, when the oil-immersed submersible pump is put into operation, more stable power supply can be performed in an external power supply mode, the rotor 17 rotates after being electrified, the active rotating shaft 21 and the radiating impeller 23 are driven to rotate, the rotation of the radiating impeller 23 drives the cooling liquid in the motor shell 14 to start circulating flow inside the driving structure 6, specifically, the heat-dissipating impeller 23 draws the cooling fluid into the interior of the stator 16, then from the top of the stator 16 into between the stator 16 and the motor housing 14, after entering the liquid storage cavity 15 through the water inlet hole 18, the water is finally pumped into the stator 16 from the water outlet hole 19 by the heat dissipation impeller 23, thereby completing the circulation, the rotation of the driving rotating shaft 21 simultaneously provides centrifugal force to the water rushing in the water inlet structure, so that the water flow is jetted out in a radial shape and impacted to the water pumping impeller 24, the water molecules obtain kinetic energy and pressure energy at the same time, then gradually passes upwards through different grooves of the pumping impeller 24 and the diffuser 25, finally, water pumped upwards through the pumping impeller 24 and the diffuser 25 flows out through the water outlet 1, the water outlet 1 is connected with a water outlet pipe and then can be connected to the ground surface, and then the pump outlet is connected with a ground surface structure through a flange.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The oil-immersed submersible pump comprises a water outlet (1), a working area shell (2), a water inlet structure (5) and a driving structure (6), and is characterized in that the working area shell (2) comprises a top shell (3) and a plurality of groups of spliced shells (4), wherein the top shell (3) and the spliced shells (4) are respectively provided with a top end cover (8), the bottom end of the top end cover (8) is provided with a main shell (9), a reinforcing rib (10) is arranged between the top end cover (8) and the main shell (9), the top surface of the top shell (3) is provided with the water outlet (1), the top surface of the spliced shell (4) is provided with a hollow boss (11), the water inlet structure (5) comprises a water inlet cover (12) and a protective net (13), and the bottom end of the working area shell (2) is provided with a water inlet cover, the water inlet cover (12) is sleeved with a protective net (13), the driving structure (6) comprises a motor shell (14), a stator (16) and a rotor (17), the bottom end of the water inlet cover (12) is connected with the motor shell (14), a liquid storage cavity (15) is arranged at the bottom end of the motor shell (14), the stator (16) is arranged inside the motor shell (14), the rotor (17) is arranged inside the stator (16), a water inlet hole (18) and a water outlet hole (19) are arranged on the bottom end surface of the motor shell (14) in a surrounding mode, the water inlet hole (18) is located outside the stator (16), the water outlet hole (19) is located inside the stator (16), a fixing block (20) is arranged at the bottom of the rotor (17), a motor power supply (35) is arranged at the top of the rotor (17), an active rotating shaft (21) is arranged inside the rotor (17), the motor power supply (35) is sleeved on the outer surface of the driving rotating shaft (21), a shaft sleeve (22) is arranged between the rotor (17) and the fixing block (20), a heat dissipation impeller (23) is arranged at the bottom end of the fixing block (20), a working area rotating shaft (26) is arranged inside the working area shell (2), and a water pumping impeller (24) and a diffuser (25) are sleeved on the outer surface of the working area rotating shaft (26).

2. The oil-immersed submersible pump according to claim 1, wherein the main housing (9) comprises a hollow circular truncated cone and a hollow cylindrical base, and the inner surface of the hollow cylindrical base and the outer surface of the hollow boss (11) are provided with matching engaging threads (28) and are connected through the engaging threads (28).

3. The oil immersed submersible pump according to claim 1, wherein the water inlet cover (12) comprises a top end connection frame (29), a water filter screen (30) and a mounting base (31), the outer surface of the top end connection frame (29) is provided with threads and is matched with the meshing threads (28) at the bottom end of the spliced shell (4), the bottom end of the top end connection frame (29) is provided with the water filter screen (30), the outer surface of the water filter screen (30) is provided with multiple groups of filter holes, the bottom end of the water filter screen (30) is provided with the mounting base (31), and the mounting base (31) is of a solid structure and is connected with the driving structure (6).

4. The oil-immersed submersible pump according to claim 3, wherein a plurality of groups of fixing baffles (32) are arranged on the periphery of the top end surface of the motor housing (14), the fixing baffles (32) are matched with the mounting base (31), the top end surface of the motor housing (14) is provided with bolt holes, the mounting base (31) is fixedly connected with the motor housing (14) through bolts, and the bolts are sealed through sealing rings.

5. The oil immersed submersible pump according to claim 1, wherein a top sealing cover (27) is arranged at the top end of the water outlet (1), a sealing block (33) is embedded on the top end surface of the motor housing (14), the sealing block (33) is sleeved on the outer surface of the active rotating shaft (21), and the motor housing (14) and the liquid storage cavity (15) at the lower end are integrally designed.

6. The oil-immersed submersible pump according to claim 1, wherein four reinforcing ribs (10) are arranged and equally distributed around the outer surface of the main shell (9), and the top ends of the reinforcing ribs (10) are welded and fixed with the top end cover (8).

7. The oil immersed submersible pump according to claim 1, wherein the outer surface of the fixed block (20) is connected to the stator (16) by means of four fixed shafts (34), and the fixed shafts (34) are arranged around the outer surface of the fixed block (20) in equal parts.

8. Oil-immersed submersible pump according to claim 1, characterized in that the diffuser (25) is arranged outside the pumping impeller (24) and the diffusers (25) are in one-to-one correspondence with the pumping impeller (24), both the diffusers (25) and the pumping impellers (24) being arranged inside the spliced casing (4).

9. The oil-immersed submersible pump according to claim 1, wherein the water outlet (1), the working area housing (2) and the motor housing (14) are all made of stainless steel materials, and the protective net (13) is made of aluminum alloy materials.

10. The oil immersed submersible pump according to claim 1, wherein the top end of the active shaft (21) penetrates through the water inlet structure (5), and the top end of the active shaft (21) is connected with the bottom end of the working area shaft (26) through a coupling.