CN218934837U

CN218934837U - Submersible pump motor assembly structure

Info

Publication number: CN218934837U
Application number: CN202222659896.7U
Authority: CN
Inventors: 张君波; 洪威博; 杨克; 周德乾; 洪利兵; 申韦
Original assignee: Ningbo Junhe Intelligent Technology Co ltd
Current assignee: Ningbo Junhe Intelligent Technology Co ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-04-28
Anticipated expiration: 2032-10-10

Abstract

The utility model relates to a submersible pump motor assembly structure, which comprises a main pump shell, wherein the lower part of the main pump shell is connected with a pump body base, a motor integration unit is arranged above the pump body base, the motor integration unit is positioned in a pump cavity formed by the inner wall of the main pump shell and the upper end face of the pump body base, the motor integration unit comprises a driving motor, a motor rear cover and a motor front cover, the driving motor is fixedly connected with the motor front cover, a guide cover is arranged at the bottom of the pump cavity, the motor rear cover is buckled above the guide cover, and the motor front cover is pressed on the end face of the motor rear cover through the guide cover, so that the motor front cover and the motor rear cover are axially fixed. The structure is characterized in that the driving motor is directly fixed on the motor front end cover, the assembly structure of the driving motor and the whole motor shell, particularly the motor rear cover, is simplified, and meanwhile, the guide cover is directly fixed with the motor rear cover, so that the motor front end cover and the motor are fixed.

Description

Submersible pump motor assembly structure

Technical Field

The utility model relates to a submersible pump, in particular to a submersible pump motor assembly structure.

Background

Due to the particularity of the working environment of the submersible pump, the sealing performance of the lower part of the submersible pump is higher in requirement on the sealing performance of the part of the lower part of the submersible pump, which is in contact with water. Meanwhile, according to the working characteristics, the output shaft of the driving motor needs to be ensured to be capable of being transmitted to the impeller, and a reasonable flow passage is arranged to enable working media to smoothly pass through the pump body, so that main working components of the pump body are arranged at the lower part of the submersible pump. The complexity of the construction results in a large number of parts, the assembly of multiple parts to one another results in a large tolerance stack-up, and the sealing performance requires assembly accuracy. Especially, the dynamic sealing structure of the motor output shaft part requires higher coaxiality to ensure the sealing effect, avoids working medium entering the motor, and further ensures the use effect and the service life.

Disclosure of Invention

In order to solve the problems, the utility model provides the submersible pump motor assembly structure with simple internal structure and good sealing effect.

In order to achieve the above purpose, the submersible pump motor assembly structure comprises a main pump shell, wherein the lower part of the main pump shell is connected with a pump body base, a motor integration unit is arranged above the pump body base and is positioned in a pump cavity formed by the inner wall of the main pump shell and the upper end face of the pump body base, the motor integration unit comprises a driving motor, a motor rear cover and a motor front end cover, the driving motor is fixedly connected with the motor front end cover, a guide cover is arranged at the bottom of the pump cavity, the motor rear cover is buckled above the guide cover, and the motor front end cover is pressed on the end face of the motor rear cover through the guide cover, so that the motor front end cover and the motor rear cover are axially fixed. The structure is characterized in that the driving motor is directly fixed on the motor front end cover, so that the coaxiality between the driving motor and the motor front end cover is ensured, the assembly structure of the driving motor and the whole motor shell, particularly the motor rear cover, is simplified, and meanwhile, the guide cover is directly fixed with the motor rear cover, so that the motor front end cover and the motor are fixed.

In order to effectively fix the axial position of the front end cover of the motor, the air guide sleeve is provided with a shaft hole formed by a first flange extending towards the direction of the front end cover of the motor, the front end cover of the motor is provided with a shaft sealing hole protruding towards the direction of the air guide sleeve, the outer side of the shaft sealing hole is provided with a boss, the inner diameter of the shaft hole is matched with the outer diameter of the shaft sealing hole, and the upper end face of the first flange is propped against the lower end face of the boss; the motor front end cover is matched with the motor rear cover through the outer edge of the motor front end cover, and the upper end face of the outer edge is propped against a step on the inner wall of the motor rear cover; the shaft sealing hole is sealed with the output shaft of the driving motor through dynamic sealing. The motor front end cover can be effectively pressed and fixed on the motor rear cover through the matching of the air guide sleeve and the end face of the motor front end cover. Meanwhile, the front end cover of the motor is directly provided with a shaft hole, and a dynamic sealing structure matched with a motor driving shaft is arranged in the shaft hole.

In order to ensure the connection stability of the motor front end cover and the driving motor, a through hole is formed in the boss, a bolt is arranged in the through hole, and the driving motor is fixed on the motor front end cover through the bolt. Through the arrangement of the through holes, the bolt can be further protected well, and the possibility of corrosion is reduced.

In order to further simplify the internal assembly structure, the guide cover and the front end cover of the motor are of an integrated structure, a shaft sealing hole protruding towards the direction of the pump body base is arranged in the center of the integrated structure, through holes are formed in two sides of the shaft sealing hole, and bolts are arranged in the through holes; the driving motor is fixed with the integrated structure through the bolts; the integrated structure is matched with the motor rear cover through the outer edge of the integrated structure, and the upper end face of the outer edge is propped against a step on the inner wall of the motor rear cover; the shaft sealing hole is sealed with the output shaft of the driving motor through dynamic sealing. Through become integrative with kuppe and motor front end housing, simple structure that changes the kuppe can directly utilize integrated into one piece structure to fix whole motor integrated element for the assembly is more convenient.

In order to ensure the tightness of the whole motor integrated unit, a sealing ring is arranged between the bolt and the through hole.

In order to further ensure the connection stability of the guide cover and the motor rear cover, the pump body base is fixed with the main pump shell through bolts, and the upper end face of the pump body base abuts against the lower end face of the guide cover. Through the press-fixing of the pump body base, the guide cover can be further axially fixed on the motor rear cover, the assembly convenience is further improved, the assembly process is reduced, and the design space is provided.

In order to further ensure the tightness of the whole submersible pump, a sealing ring is arranged between the front end cover of the motor and the rear cover of the motor, and a sealing ring is arranged between the main pump shell and the pump body base. Through structural design, only need set up the sealing washer at key position, can reach good full secret seal effect.

In order to further reduce parts and assembly procedures, the air guide sleeve and the front end cover of the motor are of an integrated structure. The process of assembling the air guide sleeve and the motor front end cover can be further omitted by integrating the air guide sleeve and the motor front end cover.

The submersible pump motor assembly structure designed by the utility model effectively simplifies the internal structure through structural design, forms a driving motor-motor front end cover-guide cover-pump body base axial fixing structure, and omits a connecting structure of the motor front end cover and the motor rear cover compared with the prior structure. And the driving motor and the motor front end cover are directly fixed, so that the coaxiality of assembly can be effectively ensured, and the dynamic sealing effect is improved. In conclusion, the utility model has the characteristics of few parts, convenient assembly and good sealing performance.

Drawings

Fig. 1 is a cross-sectional view of example 1.

Fig. 2 is a perspective view of example 1.

Fig. 3 is a cross-sectional view of example 2.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1.

As shown in fig. 1 and 2, the assembly structure of the submersible pump motor described in this embodiment includes a main pump housing 1, a pump body base 2 is connected to the lower part of the main pump housing 1, a motor integrated unit 3 is disposed above the pump body base 2, the motor integrated unit 3 is located in a pump cavity 4 formed by the inner wall of the main pump housing 1 and the upper end face of the pump body base 2, the motor integrated unit 3 includes a driving motor 5, a motor rear cover 6 and a motor front cover 7, the driving motor 5 is fixedly connected with the motor front cover 7, a guide cover 8 is disposed at the bottom of the pump cavity 4, the motor rear cover 6 is fastened above the guide cover 8, and the motor front cover 7 is pressed on the end face of the motor rear cover 6 through the guide cover 8, so that the motor front cover 7 and the motor rear cover 6 are axially fixed.

The motor front end cover 7 is provided with a shaft sealing hole 15 protruding towards the direction of the motor front end cover 7, a boss 14 is arranged on the outer side of the shaft sealing hole 15, the inner diameter of the shaft hole 10 is matched with the outer diameter of the shaft sealing hole 15, and the upper end face of the first flange 9 is propped against the lower end face of the boss 14; the motor front end cover 7 is matched with the motor rear cover 6 through the outer edge 13 of the motor front end cover, and the upper end surface of the outer edge 13 is propped against the step 12 on the inner wall of the motor rear cover 6; the shaft sealing hole 15 is sealed with the output shaft of the driving motor 5 through a dynamic seal 16. The boss 14 is internally provided with a through hole 11, the through hole 11 is internally provided with a bolt, and the driving motor 5 is fixed on the motor front end cover 7 through the bolt.

The pump body base 2 is fixed with the main pump shell 1 through bolts, and the upper end face of the pump body base 2 abuts against the lower end face of the guide cover 8.

A sealing ring is arranged between the bolt and the through hole 11. A sealing ring is arranged between the motor front end cover 7 and the motor rear cover 6, and a sealing ring is arranged between the main pump shell 1 and the pump body base 2.

Example 2

As shown in fig. 3, in the assembling structure of the submersible pump motor described in this embodiment, the air guide sleeve 8 and the motor front end cover 7 are an integrally formed structure 17, a shaft sealing hole 15 protruding towards the direction of the pump body base 2 is arranged in the center of the integrally formed structure 17, through holes 11 are arranged at two sides of the shaft sealing hole 15, and bolts are arranged in the through holes 11; the driving motor 5 is fixed with the integrated structure 17 through the bolts; the integrated structure 17 is matched with the motor rear cover 6 through the outer edge 13 of the integrated structure, and the upper end surface of the outer edge 13 is propped against the step 12 on the inner wall of the motor rear cover 6; the shaft sealing hole 15 is sealed with the output shaft of the driving motor 5 through a dynamic seal 16.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, although the present utility model has been described above with reference to the preferred embodiments, and is not intended to limit the present utility model. Any person skilled in the art should make equivalent embodiments belonging to equivalent changes and modifications by using the technical content disclosed in the above description without departing from the technical content of the present utility model, but any brief introduction modification, equivalent changes and modifications made to the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. The utility model provides a immersible pump motor assembly structure, includes main pump case (1), main pump case (1) lower part is connected with pump body base (2), pump body base (2) top sets up motor integrated element (3), motor integrated element (3) are located pump chamber (4) that main pump case (1) inner wall and pump body base (2) up end formed, its characterized in that, motor integrated element (3) include driving motor (5), motor rear cover (6) and motor front end housing (7), driving motor (5) and motor front end housing (7) fixed connection, the bottom of pump chamber (4) is provided with kuppe (8), motor rear cover (6) spiral-lock is in kuppe (8) top to press motor front end housing (7) to establish on the terminal surface of motor rear cover (6) through kuppe (8) for motor front end housing (7) and motor rear cover (6) axial fixity.

2. The submersible pump motor assembly structure according to claim 1, wherein the guide cover (8) is provided with a shaft hole (10) formed by a first flange (9) extending towards the direction of the motor front end cover (7), the motor front end cover (7) is provided with a shaft sealing hole (15) protruding towards the direction of the guide cover (8), the outer side of the shaft sealing hole (15) is provided with a boss (14), the inner diameter of the shaft hole (10) is matched with the outer diameter of the shaft sealing hole (15), and the upper end face of the first flange (9) is propped against the lower end face of the boss (14); the motor front end cover (7) is matched with the motor rear cover (6) through the outer edge (13), and the upper end surface of the outer edge (13) is propped against the step (12) on the inner wall of the motor rear cover (6); the shaft sealing hole (15) is sealed with the output shaft of the driving motor (5) through a dynamic seal (16).

3. The submersible pump motor assembly structure according to claim 2, wherein the boss (14) is provided with a through hole (11), a bolt is arranged in the through hole (11), and the driving motor (5) is fixed on the motor front end cover (7) through the bolt.

4. The submersible pump motor assembly structure according to claim 1, wherein the guide cover (8) and the motor front end cover (7) are of an integrated structure (17), a shaft sealing hole (15) protruding towards the pump body base (2) is arranged in the center of the integrated structure (17), through holes (11) are formed in two sides of the shaft sealing hole (15), and bolts are arranged in the through holes (11); the driving motor (5) is fixed with the integrated structure (17) through the bolts; the integrated structure (17) is matched with the motor rear cover (6) through the outer edge (13), and the upper end surface of the outer edge (13) is propped against the step (12) on the inner wall of the motor rear cover (6); the shaft sealing hole (15) is sealed with the output shaft of the driving motor (5) through a dynamic seal (16).

5. Submersible pump motor assembly according to claim 3 or 4, characterized in that a sealing ring is arranged between the bolt and the through hole (11).

6. The submersible pump motor assembly structure according to claim 5, wherein the pump body base (2) is fixed with the main pump casing (1) through bolts, and the upper end surface of the pump body base (2) abuts against the lower end surface of the air guide sleeve (8).

7. The submersible pump motor assembly structure according to claim 6, wherein a sealing ring is arranged between the motor front end cover (7) and the motor rear cover (6), and a sealing ring is arranged between the main pump shell (1) and the pump body base (2).