CN219012893U

CN219012893U - Novel submersible pump

Info

Publication number: CN219012893U
Application number: CN202223324345.1U
Authority: CN
Inventors: 李有田; 王帅杰; 薛少辉; 闫亚楠; 马鹏远; 黄晓
Original assignee: Shanxi Skysea Pump Co ltd
Current assignee: Shanxi Skysea Pump Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-12
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to a novel submersible pump, belonging to the technical field of submersible pumps; comprises a connecting pipe, a motor part, a water pump part and a water inlet section from top to bottom; the motor part comprises a motor inner shell and a motor outer shell which are sleeved with each other, an annular cavity is formed between the motor inner shell and the motor outer shell, openings at the upper end and the lower end of the motor outer shell are respectively closed by a connecting pipe and a thrust connecting seat, an upper guide bearing seat and a lower guide bearing seat are respectively arranged at the openings at the upper end and the lower end of the motor inner shell, an upper cover plate is arranged between the upper guide bearing seat and the connecting pipe and is respectively connected with the connecting pipe and the annular cavity, the thrust connecting seat is respectively communicated with the annular cavity and a water pump part below, a vertical motor shaft is arranged inside the motor inner shell, and the motor shaft is connected with the water pump part and a water inlet joint after passing through the thrust connecting seat; the problem that the efficiency of pumping water at a low water level can not be guaranteed when the conventional submersible pump is in an upright state is solved.

Description

Novel submersible pump

Technical Field

The utility model belongs to the technical field of submersible pumps, and particularly relates to a novel submersible pump.

Background

The 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 underground water is extracted to the ground surface, so that the unit is used for domestic water, mine rescue, industrial cooling, farm irrigation, seawater lifting and ship load adjustment, and can also be used for fountain landscapes. Under the condition of low water level of a pool, a river, engineering pumping water and the like, in order to pump water clean at the lowest water level as possible, the submersible pump needs to be placed at the lowest position as possible, but in the existing submersible pump, such as a ' CN 110439845B ' low water level single-port double-suction self-balancing submersible pump ', although pumping water at the low water level can also be realized, the submersible pump still adopts a traditional arrangement structure, namely an impeller section is arranged above, a motor section is arranged below, and a suction section is arranged between the impeller section and the motor section, so that the submersible pump can only absorb water in the middle of the whole body, and the water absorption water level of the submersible pump is high, and the submersible pump needs to be high submerged depth. If water is absorbed at a low water level, the submersible pump must be tilted or prevented from falling, so that the water outlet is not arranged at the top of the submersible pump, and the water outlet efficiency is reduced.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides a novel submersible pump; the problem that the efficiency of pumping water at a low water level can not be guaranteed when the conventional submersible pump is in an upright state is solved.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme.

A novel submersible pump comprises a connecting pipe, a motor part, a water pump part and a water inlet section from top to bottom; the motor part comprises a motor inner shell and a motor outer shell which are sleeved with each other, an annular cavity is formed between the motor inner shell and the motor outer shell, openings at the upper end and the lower end of the motor outer shell are respectively sealed by a connecting pipe and a thrust connecting seat, an upper guide bearing seat and a lower guide bearing seat are respectively arranged at the openings at the upper end and the lower end of the motor inner shell, an upper cover plate is arranged between the upper guide bearing seat and the connecting pipe and is respectively connected with the connecting pipe and the annular cavity, the thrust connecting seat is respectively communicated with the annular cavity and a water pump part below, a vertical motor shaft is arranged inside the motor inner shell, and the motor shaft penetrates through the thrust connecting seat and is connected with the water pump part and a water inlet joint.

Furthermore, the connecting pipe is of a cylindrical structure with openings at the upper end and the lower end, and connecting flanges are arranged at the openings at the upper end and the lower end; the upper end opening of the motor shell is connected with the outer edge of the flange plate at the lower end opening of the connecting pipe.

Further, the upper cover plate is of a cylindrical structure with an upper part and a side part open, the upper end opening of the upper cover plate is in butt joint with the lower end opening of the connecting pipe, and the upper end face of the upper cover plate is fixedly connected with the lower end face of the flange plate at the lower end opening of the connecting pipe; the lower end surface of the upper cover plate is fixedly connected with the upper end surface of the upper guide bearing seat; the annular cavity between the motor inner shell and the motor outer shell is communicated with the side opening of the upper cover plate.

Further, the anti-thrust connecting seat is of a cylindrical structure with an opening at the lower part and an opening at the side part, and the outer edge of the opening at the lower part of the anti-thrust connecting seat is connected with the opening at the lower end of the motor shell; the upper end of the outer side surface of the thrust connecting seat is connected with the outer edge of the lower guide bearing seat; the annular cavity between the motor inner shell and the motor outer shell is communicated with the side opening of the thrust connecting seat.

Further, a framework oil seal is arranged at the joint of the thrust connecting seat and the motor shaft; the lower end of the joint of the thrust connecting seat and the motor shaft is provided with a mechanical seal, the outer side of the mechanical seal is sleeved with a mechanical seal cover, and the mechanical seal cover seals the mechanical seal and is fixedly connected with the thrust connecting seat through a screw.

Further, the upper end of the motor shaft is rotatably connected to the inside of the upper guide bearing seat, and the lower end of the motor shaft sequentially penetrates through the lower guide bearing seat and the thrust connecting seat and stretches into the water pump part and the water inlet section; a rotor part is arranged on a motor shaft between the upper guide bearing seat and the lower guide bearing seat, and a stator part is arranged on the outer side of the rotor part.

Further, an upper connecting flange plate is arranged at the opening of the lower end of the thrust connecting seat and is fixedly connected with the thrust connecting seat; a lower connecting flange is arranged below the upper connecting flange, and a water pump part is arranged between the upper connecting flange and the lower connecting flange; a plurality of penetrating bars are arranged between the upper connecting flange plate and the lower connecting flange plate along the peripheral ring, and are in threaded connection with the upper connecting flange plate after upwards penetrating through the lower connecting flange plate, and the lower ends of the penetrating bars are fixed through nuts, so that the lower connecting flange plate is fixed with the upper connecting flange plate and the water pump part.

Further, the water pump part comprises three connecting units which are axially arranged along the motor shaft, and each connecting unit comprises a pump shell, an impeller, a guide vane and a shaft sleeve; the pump shell is of a cylindrical structure with openings at the upper end and the lower end, the inner diameter of the opening at the lower end is larger than that of the opening at the upper end, the pump shells of the three connecting units are sequentially sleeved along the axial direction, the pump shell at the uppermost side is sleeved with the upper connecting flange, the pump shell at the lowermost side is sleeved with the lower connecting flange, and a motor shaft sequentially penetrates through the three pump shells.

Further, a shaft sleeve and an impeller are sequentially sleeved on a motor shaft in each pump shell, the shaft sleeve and the impeller are connected with the motor shaft through keys, and the shaft sleeve and the impeller synchronously rotate along with the motor shaft; the blades are sleeved on the outer side of the shaft sleeve, and the blades are positioned on the outer side of the impeller; the impeller and the blades are provided with communication channels, and the inner spaces of the two adjacent pump shells are communicated through the communication channels inside the impeller and the blades.

Furthermore, the water inlet joint is fixedly connected with the lower connecting flange plate; the motor shaft passes through the lower connecting flange plate downwards and is fixedly connected with the water inlet joint; the outside of the water inlet section is provided with a water filtering net.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the submersible pump provided by the utility model, the motor part is arranged above the water pump part, and the water inlet section is arranged at the lowest end of the submersible pump, so that the submersible pump can extract liquid at a low water level in an upright state, the raised submerged depth is not needed, and the use efficiency of the submersible pump is ensured.

(2) The submersible pump provided by the utility model adopts a double-sealing structure of the framework oil seal and the mechanical seal, so that the internal sealing of the motor is ensured, and sand entering the motor is prevented.

(3) According to the submersible pump provided by the utility model, the air guide sleeve structure formed between the motor outer shell and the motor inner shell is adopted between the water outlet of the water pump part and the water outlet of the top of the motor part, so that the problems of connection between the submersible pump and a pipeline and heat dissipation of the motor part are solved, and insufficient heat dissipation of the motor part due to insufficient submerging depth is prevented.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings:

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

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged partial schematic view at B in FIG. 1;

wherein 1 is a connecting pipe, 2 is a motor part, 3 is a water pump part, 4 is a water inlet joint, 5 is an upper guide bearing seat, 6 is an upper cover plate, 7 is a lower guide bearing seat, 8 is a push-up connecting seat, 9 is a motor shaft, 10 is a rotor part, 11 is a stator part, 12 is an upper connecting flange plate, 13 is a framework oil seal, 14 is a mechanical seal, 15 is a machine seal cover, 16 is a lower connecting flange plate, 17 is a pump shell, 18 is an impeller, 19 is a blade, 20 is a shaft sleeve, 21 is a penetrating rod, 22 is a water filtering net, 23 is a cable, 24 is a motor inner shell, 25 is a motor outer shell, and 26 is an annular cavity.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The following describes the technical scheme of the present utility model in detail with reference to examples and drawings, but the scope of protection is not limited thereto.

As shown in fig. 1-3, the utility model provides a novel submersible pump, which sequentially comprises a connecting pipe 1, a motor part 2, a water pump part 3 and a water inlet joint 4 from top to bottom.

The connecting pipe 1 is of a cylindrical structure with openings at the upper end and the lower end, and connecting flanges are arranged at the openings at the upper end and the lower end.

The motor part 2 is of a cylindrical structure which is arranged vertically and comprises a motor inner shell 24, a motor outer shell 25, a motor shaft 9, a rotor part 10 and a stator part 11.

The motor outer shell 25 is sleeved outside the motor inner shell 24, and the motor outer shell and the motor inner shell are coaxially arranged, so that an annular cavity 26 is formed between the motor inner shell 24 and the motor outer shell 25. The upper and lower ends of the motor inner case 24 are spaced apart from the upper and lower openings of the motor outer case 25.

The upper end opening of the motor housing 25 is connected with the outer edge of the flange plate at the lower end opening of the connecting pipe 1. The lower end opening of the motor housing 25 is provided with a thrust coupling seat 8.

An upper guide bearing seat 5 is arranged at the upper end opening of the motor inner shell 24, and the upper end opening of the motor inner shell 24 is closed by the upper guide bearing seat 5. The lower end opening of the motor inner shell 24 is provided with a lower guide bearing seat 7, and the lower guide bearing seat 7 seals the lower end opening of the motor inner shell 24.

An upper cover plate 6 is arranged between the upper guide bearing seat 5 and the connecting pipe 1, and the upper cover plate 6 has a cylindrical structure with an upper part and a side part open. The upper end opening of the upper cover plate 6 is in butt joint with the lower end opening of the connecting pipe 1, and the upper end surface of the upper cover plate 6 is fixedly connected with the lower end surface of the flange plate at the lower end opening of the connecting pipe 1 through a stud bolt and a nut; the lower end face of the upper cover plate 6 is fixedly connected with the upper end face of the upper guide bearing seat 5 through a stud and a nut. The annular cavity 26 between the motor inner housing 24 and the motor outer housing 25 communicates with the side opening of the upper cover plate 6.

The anti-thrust connecting seat 8 is of a cylindrical structure with an opening at the lower part and an opening at the side part, and the outer edge of the opening at the lower part of the anti-thrust connecting seat 8 is connected with the opening at the lower end of the motor shell 25; the upper end of the outer side surface of the thrust connecting seat 8 is connected with the outer edge of the lower guide bearing seat 7. The annular cavity 26 between the motor inner housing 24 and the motor outer housing 25 communicates with the side opening of the thrust coupling seat 8.

The joint of the thrust connecting seat 8 and the motor shaft 9 is provided with a framework oil seal 13. The lower end of the joint of the thrust connecting seat 8 and the motor shaft 9 is provided with a mechanical seal 14, the outer side of the mechanical seal 14 is sleeved with a mechanical seal cover 15, and the mechanical seal cover 15 seals the mechanical seal 14 and is fixedly connected with the thrust connecting seat through a screw.

The side opening of the upper cover plate 6 is located on the opposite side to the side opening of the thrust coupling seat 8.

The upper end of the motor shaft 9 is rotatably connected to the inside of the upper guide bearing seat 5, and the lower end of the motor shaft 9 sequentially passes through the lower guide bearing seat 7 and the thrust connection seat 8 and stretches into the water pump part 3 and the water inlet joint 4. A rotor portion 10 is provided on the motor shaft 9 between the upper guide bearing housing 5 and the lower guide bearing housing 7, and a stator portion 11 is provided outside the rotor portion 10.

The cable 23 of the motor part 2 sequentially passes through the upper guide bearing seat 5, the upper cover plate 6 and the flange at the opening of the lower port of the connecting pipe 1 and then extends to the outer side of the connecting pipe 1.

An upper connecting flange plate 12 is arranged at the opening of the lower end of the thrust connecting seat 8, and the upper connecting flange plate 12 is fixedly connected with the thrust connecting seat 8 through a stud bolt and a nut. A lower connection flange 16 is provided below the upper connection flange 12, and a water pump section 3 is provided between the upper connection flange 12 and the lower connection flange 16. A plurality of penetrating bars 21 are arranged between the upper connecting flange plate 12 and the lower connecting flange plate 16 along the circumference, the penetrating bars 21 penetrate through the lower connecting flange plate 16 upwards and then are connected with the upper connecting flange plate 12 in a threaded manner, the lower ends of the penetrating bars 21 are fixed through nuts, and therefore the lower connecting flange plate 16 is fixed with the upper connecting flange plate 12 and the water pump part 3.

The upper connection flange 12 and the center of the upper connection flange 12 are provided with through holes, and the motor shaft 9 sequentially passes through the through holes on the upper connection flange 12 and the lower connection flange 16.

The water pump section 3 comprises three connection units arranged axially along the motor shaft 9, each connection unit comprising a pump housing 17, an impeller 18, a guide vane, a bushing 20, respectively.

The pump housing 17 has a cylindrical structure with openings at the upper and lower ends, and the inner diameter of the opening at the lower end is larger than that of the opening at the upper end. The pump shells 17 of the three connecting units are sequentially sleeved along the axial direction, the pump shell 17 at the uppermost side is sleeved with the upper connecting flange plate 12, and the pump shell 17 at the lowermost side is sleeved with the lower connecting flange plate 16. The motor shaft 9 passes through three pump housings 17 in turn.

A shaft sleeve 20 and an impeller 18 are sequentially sleeved on the motor shaft 9 in each pump shell 17, the shaft sleeve 20 and the impeller 18 are connected with the motor shaft 9 through keys, and the shaft sleeve 20 and the impeller 18 synchronously rotate along with the motor shaft 9. The blades 19 are sleeved on the outer side of the shaft sleeve 20, and the blades 19 are positioned on the outer side of the impeller 18. The impeller 18 and the blades 19 are provided with communication channels, and the internal spaces of the adjacent two pump housings 17 are communicated through the communication channels inside the impeller 18 and the blades 19.

The water inlet joint 4 is fixedly connected with the lower connecting flange 16 through bolt head bolts and nuts. The motor shaft 9 passes through the lower connecting flange 16 downwards and is fixedly connected with the water inlet joint 4. A water filter net 22 is arranged outside the water inlet section 4.

The communication passage inside the impeller 18 at the lowermost side communicates with the inside of the water intake section 4.

The working principle of the utility model is as follows:

after the cable 23 is electrified, the motor part 2 is driven to run, the motor shaft 9 of the motor part 2 starts to rotate, the motor shaft 9 drives the shaft sleeve 20, the impeller 18 and the water inlet joint 4 of the water pump part 3 to rotate, the water filtered by the water filtering net 22 is pumped in by the water inlet joint 4, sequentially passes through the inside of each connecting unit of the water pump part 3, enters the inside of the thrust connecting seat 8 from the through hole of the upper connecting flange, then enters the inside of the annular cavity 26 between the motor inner shell 24 and the motor outer shell 25 through the side opening of the thrust connecting seat 8, then enters the inside of the upper cover plate 6 through the side opening of the upper cover plate 6, and finally is output to the outside through the connecting pipe 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A novel submersible pump, characterized in that: comprises a connecting pipe (1), a motor part (2), a water pump part (3) and a water inlet joint (4) from top to bottom in sequence; the motor part (2) comprises a motor inner shell (24) and a motor outer shell (25) which are sleeved with each other, an annular cavity (26) is formed between the motor inner shell (24) and the motor outer shell (25), openings at the upper end and the lower end of the motor outer shell (25) are respectively sealed by a connecting pipe (1) and a thrust connecting seat (8), an upper guide bearing seat (5) and a lower guide bearing seat (7) are respectively arranged at the openings at the upper end and the lower end of the motor inner shell (24), an upper cover plate (6) is arranged between the upper guide bearing seat (5) and the connecting pipe (1), the upper cover plate (6) is respectively connected with the connecting pipe (1) and the annular cavity (26), the thrust connecting seat (8) is respectively communicated with the annular cavity (26) and the water pump part (3) below, a vertical motor shaft (9) is arranged inside the motor inner shell (24), and the motor shaft (9) passes through the thrust connecting seat (8) and is connected with the water pump part (3) and the water inlet joint (4).

2. A novel submersible pump according to claim 1, wherein: the connecting pipe (1) is of a cylindrical structure with openings at the upper end and the lower end, and connecting flanges are arranged at the openings at the upper end and the lower end; the upper end opening of the motor shell (25) is connected with the outer edge of the flange plate at the lower end opening of the connecting pipe (1).

3. A novel submersible pump according to claim 2, wherein: the upper cover plate (6) is of a cylindrical structure with an upper part and a side part open, the upper end opening of the upper cover plate (6) is in butt joint with the lower end opening of the connecting pipe (1), and the upper end surface of the upper cover plate (6) is fixedly connected with the lower end surface of the flange plate at the lower end opening of the connecting pipe (1); the lower end surface of the upper cover plate (6) is fixedly connected with the upper end surface of the upper guide bearing seat (5); an annular cavity (26) between the motor inner shell (24) and the motor outer shell (25) is communicated with the side opening of the upper cover plate (6).

4. A novel submersible pump according to claim 1, wherein: the thrust connection seat (8) is of a cylindrical structure with an opening at the lower part and an opening at the side part, and the outer edge of the opening at the lower part of the thrust connection seat (8) is connected with the opening at the lower end of the motor shell (25); the upper end of the outer side surface of the thrust connection seat (8) is connected with the outer edge of the lower guide bearing seat (7); an annular cavity (26) between the motor inner shell (24) and the motor outer shell (25) is communicated with a side opening of the thrust connection seat (8).

5. A novel submersible pump according to claim 1, wherein: a framework oil seal (13) is arranged at the joint of the thrust connecting seat (8) and the motor shaft (9); the lower end of the joint of the thrust connecting seat (8) and the motor shaft (9) is provided with a mechanical seal (14), the outer side of the mechanical seal (14) is sleeved with a mechanical seal cover (15), and the mechanical seal cover (15) seals the mechanical seal (14) and is fixedly connected with the thrust connecting seat (8) through a screw.

6. A novel submersible pump according to claim 1, wherein: the upper end of the motor shaft (9) is rotationally connected to the inside of the upper guide bearing seat (5), and the lower end of the motor shaft (9) sequentially penetrates through the lower guide bearing seat (7) and the thrust connection seat (8) and stretches into the water pump part (3) and the water inlet joint (4); a rotor part (10) is arranged on a motor shaft (9) between the upper guide bearing seat (5) and the lower guide bearing seat (7), and a stator part (11) is arranged on the outer side of the rotor part (10).

7. A novel submersible pump according to claim 1, wherein: an upper connecting flange plate (12) is arranged at the opening of the lower end of the thrust connecting seat (8), and the upper connecting flange plate (12) is fixedly connected with the thrust connecting seat (8); a lower connecting flange (16) is arranged below the upper connecting flange (12), and a water pump part (3) is arranged between the upper connecting flange (12) and the lower connecting flange (16); a plurality of penetrating bars (21) are arranged between the upper connecting flange plate (12) and the lower connecting flange plate (16) along the circumference, the penetrating bars (21) upwards penetrate through the lower connecting flange plate (16) and then are in threaded connection with the upper connecting flange plate (12), the lower ends of the penetrating bars (21) are fixed through nuts, and therefore the lower connecting flange plate (16), the upper connecting flange plate (12) and the water pump part (3) are fixed.

8. The novel submersible pump of claim 7, wherein: the water pump part (3) comprises three connecting units axially arranged along a motor shaft (9), and each connecting unit comprises a pump shell (17), an impeller (18), a guide vane and a shaft sleeve (20); the pump shell (17) is of a cylindrical structure with openings at the upper end and the lower end, the inner diameter of the opening at the lower end is larger than that of the opening at the upper end, the pump shells (17) of the three connecting units are sequentially sleeved along the axial direction, the pump shell (17) at the uppermost side is sleeved with the upper connecting flange plate (12), the pump shell (17) at the lowermost side is sleeved with the lower connecting flange plate (16), and the motor shaft (9) sequentially penetrates through the three pump shells (17).

9. The novel submersible pump of claim 8, wherein: a shaft sleeve (20) and an impeller (18) are sequentially sleeved on a motor shaft (9) in each pump shell (17), the shaft sleeve (20) and the impeller (18) are connected with the motor shaft (9) through keys, and the shaft sleeve (20) and the impeller (18) synchronously rotate along with the motor shaft (9); the blades (19) are sleeved on the outer side of the shaft sleeve (20), and the blades (19) are positioned on the outer side of the impeller (18); the impeller (18) and the blades (19) are provided with communication channels, and the internal spaces of the two adjacent pump shells (17) are communicated through the communication channels inside the impeller (18) and the blades (19).

10. A novel submersible pump according to claim 9, wherein: the water inlet joint (4) is fixedly connected with the lower connecting flange plate (16); the motor shaft (9) passes through the lower connecting flange plate (16) downwards and is fixedly connected with the water inlet joint (4); a water filtering net (22) is arranged at the outer side of the water inlet section (4).