CN220711249U

CN220711249U - Motor for submersible pump

Info

Publication number: CN220711249U
Application number: CN202321777869.8U
Authority: CN
Inventors: 陈贤元; 刘伟
Original assignee: Taizhou Jiadi Pump Industry Co ltd
Current assignee: Taizhou Jiadi Pump Industry Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-04-02
Anticipated expiration: 2033-07-07

Abstract

The utility model provides a motor for a submersible pump, belongs to the technical field of motors, and solves the problem that radial runout and axial sliding easily occur when a rotary shaft of the submersible pump motor works to cause sealing failure of the motor. According to the utility model, the rotating shaft of the motor is shortened, and the rotation of the impeller set is controlled through the coupler to replace the original integrated rotating shaft; a pressure regulating type is arranged in the base, and a U-shaped rubber pressure regulating film is arranged in the pressure regulating chamber; the part of the rotating shaft extending out of the motor cylinder is provided with a sealing sleeve, a shaft sleeve and a sealing ring, the sealing sleeve and the rotating shaft are in interference fit to form a layer of sealing, the shaft sleeve and the cover plate form a second layer of sealing, an aluminum ring is arranged in the sealing ring, and the aluminum ring compresses the sealing ring to form a third layer of sealing. The utility model has the advantages that: the length of a motor rotating shaft is reduced, and the shaft coupler controls the impeller to rotate, so that stress displacement is reduced; the voltage regulating structure is independent, so that the motor can stably run; the triple seal is formed by the seal sleeve, the shaft sleeve, the cover plate and the seal ring, and the sealing performance is good.

Description

Motor for submersible pump

Technical Field

The utility model belongs to the technical field of motors, and relates to a motor, in particular to a motor for a submersible pump.

Background

The submersible pump is an important device for lifting water in a deep well, and the submersible pump is named because the whole unit is immersed in water to work, so that high requirements are put on the sealing of a motor.

The immersible pump is motor shaft stretches out the motor generally, establishes ties whole impeller group, and the stiff end on pump body top is fixed at the end, and at the during operation, the moment influence that motor shaft can receive takes place stronger radial runout and axial displacement, wearing and tearing bearing and sealing member, operating time can lead to the sealed department of motor to appear the gap soon, leads to the motor to short circuit burn because of intaking, reduces the life of immersible pump.

The submersible pump with the patent number of CN201020255665.4 aims at the problems that a pump shell is easy to corrode and the service life is short, the casing is changed into stainless steel, and the inner pump body is arranged in the casing and used for still operating normally when the stainless steel casing is damaged, so that the service life of the submersible pump is prolonged.

Above-mentioned patent exists can optimize the space, and this patent motor shaft lower extreme stretches to the bearing frame, and the upper end passes impeller group and sets up the stiff end fixed on the immersible pump, and at immersible pump during operation, the motor shaft can take place stronger radial runout and axial displacement, and friction takes place for bearing and sealed department, causes sealed department to appear the gap, and the motor burns out because of the short circuit of intaking, and the heat of motor during operation is difficult to give off, and the internal atmospheric pressure of motor increases, influences the normal running of motor.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a submersible pump motor which has good sealing performance and can stably operate.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a motor for immersible pump, includes barrel, stator, rotor and base, bolster bearing housing and bolster bearing housing are installed at the barrel both ends, install the pivot in the rotor, pivot one end stretches out in the barrel, the base is installed through screw one to bolster bearing housing below, set up the surge chamber in the base, install U type rubber pressure regulating membrane in the surge chamber.

In the motor for the submersible pump, the stator is connected with a cable, the cable penetrates out of the upper bearing seat and the cover plate, and the cable is sleeved with a first sealing ring.

In the motor for the submersible pump, the end cover is arranged at the lower end of the base, the end cover is arranged on the base through the second screw, a plurality of through holes are formed in the end cover, and the through holes are communicated with the pressure regulating chamber.

In the motor for the submersible pump, the matched bearing is arranged in the lower bearing seat, the matched bearing props against the shaft shoulder of the rotary shaft, the lower bearing seat is fixedly connected with the thrust ring through the first bolt, and the thrust ring props against the bulge on the inner wall of the machine barrel.

In the motor for the submersible pump, the guide bearing is arranged in the upper bearing seat, the guide bearing props against the shaft shoulder of the rotary shaft, the upper bearing seat is fixedly connected with the cover plate through the third screw, the side surface of the upper bearing seat is fixedly connected with the machine barrel through the second screw, and the second screw is additionally provided with the locking nut.

In the motor for the submersible pump, the sealing ring, the shaft sleeve and the sealing sleeve are sequentially arranged at the upper end of the rotating shaft, the sealing sleeve and the rotating shaft are in interference fit, the cover plate is clamped between the sealing sleeve and the shaft sleeve, the aluminum ring is arranged in the sealing ring, and the inner diameter of the aluminum ring is smaller than the outer diameter of the inner ring of the sealing ring.

In the motor for the submersible pump, the side surfaces of the upper bearing seat and the lower bearing seat are provided with the sealing rings II.

In the motor for the submersible pump, a sealing gasket is arranged between the base and the lower bearing seat.

Compared with the prior art, the utility model has the advantages that: the original rotating shaft of the whole submerged pump is shortened, the rotating shaft and the impeller set are fixedly connected through the coupler, and the stress of the rotating shaft when the submerged pump works is reduced; the pressure regulating mechanism arranged on the base is increased, the pressure regulating mechanism is changed into an independent pressure regulating chamber, the area of the rubber pressure regulating film is increased, the heat exchange area is increased, and the air pressure in the motor is prevented from being too high.

Drawings

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

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

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

FIG. 4 is an enlarged view of C in FIG. 1;

wherein, 1, a machine barrel; 1a, a bulge; 2. a stator; 3. a rotor; 4. a rotating shaft; 5. a lower bearing seat; 5a, a first screw; 6. an upper bearing seat; 7. a base; 71. a pressure regulating chamber; 711. u-shaped rubber pressure regulating film; 72. an end cap; 721. a through hole; 722. a second screw; 8. a cover plate; 8a, a screw III; 9. a cable; 10. a first sealing ring; 11. pairing bearings; 12. a thrust collar; 13. a first bolt; 14. a guide bearing; 15. a seal ring; 15a, an aluminum ring; 16. a shaft sleeve; 17. sealing sleeve; 18. a second sealing ring; 19. and a sealing gasket.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the present utility model can be realized by the following embodiments: the motor is mainly composed of a machine barrel 1, a stator 2, a rotor 3 and a rotating shaft 4 arranged in the rotor 3, wherein an upper bearing seat 6 and a lower bearing seat 5 are arranged at the upper end and the lower end of the machine barrel 1, the stator 2 is fixed on the machine barrel 1, the rotor 3 is coaxially fixed in the stator 2, the rotating shaft 4 is arranged in the rotor 3, the two ends of the rotating shaft 4 extend out of the rotor 3, the lower end extends to the lower bearing seat 5, the upper end only extends out of the upper bearing seat 6 through a shaft coupling, the lower bearing seat 5 is fixedly connected with a base 7 through a screw 5a, a pressure regulating chamber 71 is arranged in the base 7, and a U-shaped rubber pressure regulating film 711 is arranged in the pressure regulating chamber 71.

When the utility model works, the generated high temperature can expand air, the expanded air enables the U-shaped rubber pressure regulating film 711 to be inwards sunken, the U-shaped rubber pressure regulating film 711 is designed to enable more pressure regulating allowance to be generated in the motor, meanwhile, the extending part at the upper end of the rotating shaft 4 is cut into a rectangle and is fixedly connected with the shaft of the impeller set through the coupling, the bearable moment of the shortened rotating shaft 4 is also reduced, meanwhile, the coupling also shares part of moment, the moment born by the rotating shaft 4 of the motor is reduced, the stable running of the rotating shaft 4 of the motor is ensured, and the cover plate 8 is used for enhancing the sealing at the upper bearing seat 6.

Further explaining, as shown in fig. 1, a cable 9 is connected to the stator 2, the cable 9 passes through the upper bearing seat 6 and the cover plate 8, and a sealing ring I10 is installed at the cable 9 in an interference manner. The cable 9 directly connected with the stator 2 and extending out of the submersible pump can provide stable energy supply for the submersible pump, so that the submersible pump can run for a long time, and meanwhile, the first sealing ring 10 arranged on the cable 9 can prevent water from entering the cable 9 to cause short circuit by compressing a gap in the cable 9 besides sealing and waterproofing.

As shown in fig. 1, an end cover 72 is mounted at the lower end of the base 7, the end cover 72 is fixedly connected with the base 7 through a second screw 722, a plurality of through holes 721 are formed in the end cover 72, and the through holes 721 are communicated with the pressure regulating chamber 71. The rivers get into the pressure regulating chamber 71 through the through-hole 721 in, prevent to change the atmospheric pressure that the too big and lead to U type rubber pressure regulating membrane 711 to damage, carry out heat exchange through U type rubber pressure regulating membrane 711 between water and the air simultaneously, reduce the air temperature in the motor, the air after the cooling simultaneously can provide cooling effect for the motor, keeps motor job stabilization, prevents that the motor from damaging because of overheated.

As shown in fig. 1 and 3, a mating bearing 11 is installed in the lower bearing seat 5, and the mating bearing 11 is abutted against the shaft shoulder of the rotating shaft 4 while being tightly attached to the lower bearing seat 5, so that a gap between the rotating shaft 4 and the bearing is eliminated, and the rotating shaft 4 is prevented from axial displacement; the lower bearing seat 5 is fixedly connected with the thrust ring 12 through a first bolt 13, the thrust ring 12 props against the bulge 1a on the inner wall of the machine barrel 1, and the thrust ring 12 can further limit the axial displacement of the rotating shaft 4, namely when the rotating shaft 4 slides downwards to push the lower bearing seat 5, the thrust ring 12 provides the same force and the opposite tensile force, so that the position of the lower bearing seat 5 is kept unchanged, and the lower bearing seat 5 drives the rotating shaft 4 to be unchanged.

As shown in fig. 1 and 4, the upper bearing housing 6 is internally provided with a guide bearing 14, the rotating shaft penetrates through the guide bearing 14,

as shown in fig. 1 and 2, a sealing ring 15, a shaft sleeve 18 and a sealing sleeve 19 are sequentially arranged at the upper end of the rotating shaft 4, the sealing sleeve 19 is in interference fit with the rotating shaft 4, a cover plate 8 is clamped between the shaft sleeve 18 and the sealing sleeve 19, an aluminum ring 17a is arranged in the sealing ring 15, and the inner diameter of the aluminum ring 17a is smaller than that of the sealing ring. The extension part of the upper end of the rotating shaft 4 is sealed by the installation sealing ring 15, the shaft sleeve 18 and the sealing sleeve 19, and the sealing sleeve 19 and the rotating shaft 4 prevent water flow from passing through by interference fit; a cover plate 8 is clamped between the shaft sleeve 18 and the sealing sleeve 19, and the cover plate 8 fills a gap between the shaft sleeve 18 and the sealing sleeve 19 to strengthen sealing; an aluminum ring 17a is arranged in the sealing ring 15, the inner diameter of the aluminum ring 17a is smaller than that of the sealing ring, the aluminum ring 17a tightly presses the sealing ring 15, a gap between the sealing ring 15 and the rotating shaft 4 is eliminated, and sealing is enhanced.

As shown in fig. 1, 3 and 4, the side surfaces of the upper bearing seat 6 and the lower bearing seat 5 are respectively provided with 2 second sealing rings 20. And the second sealing ring 20 is used for filling gaps between the upper bearing seat 6, the lower bearing seat 5 and the machine barrel 1, so that the sealing performance is enhanced.

As shown in fig. 1 and 4, a sealing gasket 21 is installed between the base 7 and the lower bearing housing 5. The contact area between the base 7 and the machine barrel 1 is small, so that the infiltration of clean water is easy to occur, and the sealing performance can be improved by adding the sealing gasket 21.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a motor for immersible pump, includes barrel (1), stator (2), rotor (3) and base (7), its characterized in that: the novel rubber pressure regulating device is characterized in that an upper bearing seat (6) and a lower bearing seat (5) are arranged at two ends of the machine barrel (1), the stator (2) is fixed on the machine barrel (1), the rotor (3) is coaxially arranged in the stator (2), a rotating shaft (4) is arranged in the rotor (3), two ends of the rotating shaft (4) extend out from two ends of the rotor (3), a base (7) is arranged below the lower bearing seat (5) through a first screw (5 a), a pressure regulating chamber (71) is arranged in the base (7), and a U-shaped rubber pressure regulating membrane (711) is arranged in the pressure regulating chamber (71).

2. The submersible pump motor according to claim 1, wherein the stator (2) is connected with a cable (9), the cable (9) penetrates out of the upper bearing seat (6) and the cover plate (8), and a sealing ring I (10) is sleeved on the cable (9) in an interference mode.

3. The submersible pump motor according to claim 1, wherein an end cover (72) is mounted at the lower end of the base (7), the end cover (72) is mounted on the base (7) through a second screw (722), a plurality of through holes (721) are formed in the end cover (72), and the through holes (721) are communicated with the pressure regulating chamber (71).

4. The submersible pump motor according to claim 1, wherein a mating bearing (11) is installed in the lower bearing seat (5), the mating bearing (11) abuts against a shaft shoulder of the rotating shaft (4), the lower bearing seat (5) is fixedly connected with a thrust ring (12) through a first bolt (13), and the thrust ring (12) abuts against a protrusion (1 a) on the inner wall of the machine barrel (1).

5. The submersible pump motor according to claim 1, wherein in the submersible pump motor, a guide bearing (14) is installed in the upper bearing seat (6), the guide bearing (14) props against a shaft shoulder of the rotating shaft (4), the upper bearing seat (6) is fixedly connected with the cover plate (8) through a third screw (8 a), the side surface of the upper bearing seat (6) is fixedly connected with the machine barrel (1) through a second screw bolt (61), and a locking nut (62) is additionally arranged on the second screw bolt (61).

6. The submersible pump motor according to claim 1, wherein a sealing ring (17), a shaft sleeve (18) and a sealing sleeve (19) are sequentially arranged at the upper end of the rotating shaft (4), the sealing sleeve (19) and the rotating shaft (4) are in interference fit, a cover plate (8) is clamped between the sealing sleeve (19) and the shaft sleeve (18), an aluminum ring (17 a) is arranged in the sealing ring (17), and the inner diameter of the aluminum ring (17 a) is smaller than the outer diameter of the inner ring of the sealing ring (17).

7. The submersible pump motor according to claim 1, characterized in that the side surfaces of the upper bearing seat (6) and the lower bearing seat (5) are provided with a plurality of sealing rings (20).

8. A submersible pump motor according to claim 1, characterized in that a sealing gasket (21) is mounted between the base (7) and the lower bearing housing (5).