CN212407048U

CN212407048U - High-lift multistage submersible pump motor shaft anti-swing structure

Info

Publication number: CN212407048U
Application number: CN202022011064.5U
Authority: CN
Inventors: 张显亮
Original assignee: Yuli Electric Machinery Engineering Co ltd
Current assignee: Yuli Electric Machinery Engineering Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-01-26
Anticipated expiration: 2030-09-15

Abstract

The utility model provides a multistage immersible pump motor shaft anti-swing structure of high-lift belongs to fluid machinery technical field. It has solved the easy wobbling problem of current multistage immersible pump motor shaft. This multistage immersible pump motor shaft anti-swing structure of high-lift, include motor portion and install in the pump body of motor portion top, it is provided with the first positioning seat rather than formula structure as an organic whole to lie in its middle section center in the pump body, the inside of positioning seat one is provided with axle sleeve one, its top is supported with positioning seat one inside on locating the motor shaft by the lower extreme and is fixed through snap ring one in this axle sleeve one set, be provided with bearing frame and the second positioning seat of formula structure in the pump cover, the inside of positioning seat two is provided with axle sleeve two, its both ends are supported through bearing frame and snap ring two respectively on the motor shaft is located to this axle sleeve cover, be provided with the bearing that is used for. The utility model discloses increase bearing structure to the motor shaft, have the operation advantage that makes impeller subassembly more stable.

Description

High-lift multistage submersible pump motor shaft anti-swing structure

Technical Field

The utility model belongs to the technical field of fluid machinery, a immersible pump is related to, in particular to multistage immersible pump motor shaft anti-swing structure of high-lift.

Background

The submersible pump is a water lifting machine with a motor and a water pump directly connected into a whole to be submerged into water for working, and has the advantages of simple structure, energy conservation, high efficiency, safety and reliability. The multistage submersible pump is characterized in that a plurality of groups of impeller assemblies are connected to a pump body motor shaft, the impeller assemblies are sequentially and axially arranged, so that the submersible pump with more number is longer in length, and in the prior art, the pump body motor shaft is extended out, and the rear end part or the middle part of the pump body motor shaft is generally not provided with a supporting structure, so that the motor shaft is easy to swing during operation, the longer the length of the pump is, the more obvious the swing is, and the problem can cause the reduction of the efficiency and the reduction.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind and increase bearing structure to the motor shaft and prevent its swing, make the multistage immersible pump of high lift that impeller assembly's operation is more stable.

The purpose of the utility model can be realized by the following technical proposal: a motor shaft anti-swing structure of a high-lift multistage submersible pump comprises a motor part and a pump body arranged above the motor part, the motor shaft of the motor part extends upwards to the pump cover at the top of the pump body, and a plurality of groups of impeller assemblies fixed on the motor shaft are arranged in the pump body, it is characterized in that a first positioning seat which is integrated with the pump body is arranged in the center of the middle section of the pump body, a first shaft sleeve is arranged inside the first positioning seat, the shaft sleeve is sleeved on the motor shaft, the top of the shaft sleeve is abutted against the inner part of the positioning seat I, the lower end of the shaft sleeve is fixed through a snap ring I, the pump cover is internally provided with a bearing seat and a second positioning seat which are of an integrated structure, the second positioning seat is internally provided with a second shaft sleeve, the two ends of the shaft sleeve are arranged on the motor shaft in a sleeved mode and are abutted against the bearing block and the clamping ring II respectively, a bearing used for positioning the end portion of the motor shaft is arranged in the bearing block, and the bearing is fixed through a cover plate.

In the anti-swing structure of the motor shaft of the high-lift multistage submersible pump, the bearing seat is positioned above the second positioning seat.

In the anti-swing structure of the motor shaft of the high-lift multistage submersible pump, the blade is arranged on the motor shaft between the second positioning seat and the pump body, and the blade is positioned in the pump cover and matched with the internal structure of the pump cover.

In the anti-swing structure of the motor shaft of the high-lift multistage submersible pump, a water inlet joint is arranged between the motor part and the pump body, and a grid type filter screen is arranged at the water inlet joint.

In the anti-swing structure of the motor shaft of the high-lift multistage submersible pump, the side of the motor part is provided with a wire outlet, a lead of the motor part is connected with an internal wiring cavity, a winding in the motor part is connected with a thermal protector in series, and the thermal protector is fixed in the wiring cavity.

In the anti-swing structure of the motor shaft of the high-lift multistage submersible pump, the water outlet channel is arranged between the pump cover and the bearing seat, and the water outlet of the submersible pump is positioned at the top of the pump cover.

Compared with the prior art, this multistage immersible pump motor shaft anti-swing structure of high-lift has following advantage:

1. because the motor shaft length of the multistage submersible pump is longer, the positioning seat with an integrated structure is arranged in the middle section of the pump body and the pump cover and used for installing the shaft sleeve, and the motor shaft is supported by the shaft sleeve, so that the motor shaft can be effectively prevented from swinging during operation;

2. the end part of the motor shaft influences the important swinging position of the motor shaft, and in order to ensure that the stability of the motor shaft is better, a bearing seat is added in the pump cover in parallel with the positioning seat, so that the motor shaft has the advantage of better shaft swinging prevention effect;

3. the higher motor load of multistage immersible pump lift is big, in order to play certain guard action to the motor, installs hot protector in motor portion wiring intracavity, can prevent motor overload damage.

Drawings

FIG. 1 is a cross-sectional view of the present submersible pump;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

in the figure, 1, a motor part; 1a, a motor shaft; 2. a pump body; 3. a pump cover; 4. an impeller assembly; 5. a first positioning seat; 6. a first shaft sleeve; 7. a first snap ring; 8. a bearing seat; 9. a second positioning seat; 10. a second shaft sleeve; 11. a snap ring II; 12. a cover plate; 13. a blade; 14. a water inlet joint; 15. filtering with a screen; 16. an outlet; 17. a wiring cavity; 18. a thermal protector; 19. and a water outlet flow passage.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the motor shaft anti-swing structure of the high-lift multistage submersible pump comprises a motor part 1 and a pump body 2 arranged above the motor part 1, wherein a motor shaft 1a of the motor part 1 upwards extends to a pump cover 3 at the top of the pump body 2 and a plurality of groups of impeller assemblies 4 fixed on the motor shaft 1a are arranged in the pump body 2, each impeller assembly 4 comprises an inner impeller and an outer guide vane, the inner impeller and the outer guide vanes are sequentially upwards arranged and arranged side by side, and the upper end and the lower end of each guide vane are provided with step structures which can be.

It is provided with rather than the positioning seat 5 of formula structure as an organic whole to lie in its middle section center in the pump body 2, positioning seat 5 is fixed with the pump body 2 through the splice bar of many radial settings, liquid can flow through from the interval of every splice bar, the inside of positioning seat 5 is provided with axle sleeve 6, its top is supported the lower extreme through snap ring 7 with positioning seat 5 inside on motor shaft 1a to this axle sleeve 6 cover is located, be provided with bearing frame 8 and positioning seat two 9 of formula structure in the pump cover 3, the inside of positioning seat two 9 is provided with axle sleeve two 10, its both ends support through bearing frame 8 and snap ring two 11 respectively on motor shaft 1a are located to this axle sleeve two 10 covers, be provided with the bearing that is used for fixing a position motor shaft 1a tip in the bearing frame 8 and fix the bearing through.

To sum up, be in the utility model discloses well motor shaft 1a middle part and tip all use the axle sleeve to support the cooperation positioning seat fixed, consequently can play effectual anti-swing effect to motor shaft 1a, more be favorable to multistage immersible pump's design, increase impeller subassembly 4's quantity to a certain extent promptly, what need explain in addition that the quantity of axle sleeve can be according to the increase in quantity or the reduction of actual impeller subassembly 4, can directly set up the axle sleeve in 3 departments of pump cover when impeller subassembly 4 is less, when impeller subassembly 4 is in a large number, can be in the inside quantity that increases the axle sleeve of the pump body 2.

Further, the bearing seat 8 is located above the second positioning seat 9, and the design of the structure can facilitate the installation and fixation of the second shaft sleeve 10 and the bearing.

Be provided with blade 13 on motor shaft 1a between the second 9 of positioning seat and the pump body 2, blade 13 is located pump cover 3 interior structure and cooperatees, and the structure through blade 13 cooperation pump cover 3 after liquid is carried makes liquid upwards flow more easily, has increased the efficiency and the lift of immersible pump to a certain extent.

A water inlet joint 14 is arranged between the motor part 1 and the pump body 2, a grid type filter screen 15 is arranged at the water inlet joint 14, liquid is sucked from the water inlet joint 14 and impurities are filtered through the filter screen 15, the water inlet joint 14 also has the effect of connecting the motor part 1 and the pump body 2, and the motor part 1 and the pump body 2 are respectively fixed at two ends of the water inlet joint 14 to form the whole submersible pump.

The side of motor portion 1 is connected with internal wiring chamber 17 for its wire of outlet 16, and winding in the motor portion 1 has concatenated thermal protector 18, and thermal protector 18 is fixed in wiring chamber 17, because the higher motor load of multistage immersible pump's lift is big, can effectively prevent through thermal protector 18 that the motor from damaging, and is further the utility model discloses in, thermal protector 18 is located wiring chamber 17 and can makes thermal protector 18 not fragile for traditional ligature at motor winding tip this structure.

A water outlet flow passage 19 is formed between the pump cover 3 and the bearing seat 8, a water outlet of the submersible pump is positioned at the top of the pump cover 3, and liquid conveyed by the impeller assembly 4 flows out of the pump submersible pump from the water outlet flow passage 19 through the blades 13 in cooperation with the pump cover 3 to form a top water outlet structure.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although various terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A high-lift multistage submersible pump motor shaft anti-swing structure comprises a motor part (1) and a pump body (2) arranged above the motor part (1), wherein a motor shaft (1 a) of the motor part (1) upwards extends to a pump cover (3) at the top of the pump body (2), and a plurality of groups of impeller assemblies (4) fixed on the motor shaft (1 a) are arranged in the pump body (2), the pump body (2) is internally provided with a first positioning seat (5) which is of an integral structure with the pump body at the center of the middle section of the pump body, a first shaft sleeve (6) is arranged in the first positioning seat (5), the first shaft sleeve (6) is sleeved on the motor shaft (1 a), the top of the first shaft sleeve is abutted against the inner part of the first positioning seat (5) and is fixed at the lower end through a first snap ring (7), a bearing seat (8) and a second positioning seat (9) of the integral structure are arranged in the pump cover (3), and a second, the two shaft sleeves (10) are sleeved on the motor shaft (1 a) and two ends of the two shaft sleeves are abutted against the two snap rings (11) through the bearing seats (8), the bearing seats (8) are internally provided with bearings used for positioning the end part of the motor shaft (1 a) and fix the bearings through the cover plates (12).

2. The anti-swing structure of the motor shaft of the high-lift multistage submersible pump according to claim 1, characterized in that the bearing seat (8) is located above the second positioning seat (9).

3. The motor shaft anti-swing structure of the high-lift multistage submersible pump according to claim 2, characterized in that a blade (13) is arranged on the motor shaft (1 a) between the second positioning seat (9) and the pump body (2), and the blade (13) is arranged in the pump cover (3) and is matched with the internal structure of the pump cover (3).

4. The motor shaft anti-swing structure of the high-lift multistage submersible pump according to claim 1, characterized in that a water inlet joint (14) is arranged between the motor part (1) and the pump body (2), and a grid type filter screen (15) is installed at the water inlet joint (14).

5. The motor shaft anti-swing structure of the high-lift multistage submersible pump according to claim 1 or 4, characterized in that the motor part (1) is provided with an outlet (16) at the side, a lead of the motor part is connected with an internal wiring cavity (17), a winding in the motor part (1) is connected with a thermal protector (18) in series, and the thermal protector (18) is fixed in the wiring cavity (17).

6. The motor shaft anti-swing structure of the high-lift multistage submersible pump according to claim 1, characterized in that a water outlet channel (19) is arranged between the pump cover (3) and the bearing seat (8), and a water outlet of the submersible pump is positioned at the top of the pump cover (3).