CN224120382U

CN224120382U - Submersible pump

Info

Publication number: CN224120382U
Application number: CN202420009234.1U
Authority: CN
Inventors: 陈晓清; 陈云
Original assignee: Changsha Jinyang Huaxun Special Purpose Vehicle Manufacturing Co ltd
Current assignee: Changsha Jinyang Huaxun Special Purpose Vehicle Manufacturing Co ltd
Priority date: 2024-01-02
Filing date: 2024-01-02
Publication date: 2026-04-14
Anticipated expiration: 2034-01-02

Abstract

The utility model provides a submersible electric pump, which relates to the technical field of water pumps and comprises a motor module and a hydraulic module. The motor module comprises a motor inner structure, an outer cylinder body used for surrounding the motor inner structure and a driving shaft partially extending out of the outer cylinder body. The hydraulic module is arranged at the extending end of the driving shaft and comprises a diversion shell and an impeller which is accommodated in the diversion shell and is detachably arranged on the driving shaft. A mounting plate is arranged between the outer cylinder body and the diversion shell body, and the mounting plate covers the internal structure of the motor in the outer cylinder body; A bearing for rotatably supporting the driving shaft is arranged on one side of the mounting plate, which is close to the inner part of the outer cylinder body, and a sealing structure is arranged on one side of the mounting plate, which is close to the hydraulic module, wherein the sealing structure is detachably arranged on the mounting plate, and the diversion shell is detachably arranged on the mounting plate or the sealing structure. The hydraulic module can be conveniently detached and maintained and conveniently replaced, and the hydraulic performance can be greatly adjusted.

Description

Submersible electric pump

Technical Field

The application relates to the technical field of water pumps, in particular to a submersible electric pump.

Background

The submersible electric pump is used as a water supply and drainage tool, is widely used in daily life, and particularly has the characteristics of small weight and large discharge capacity in recent years, and plays an important role in flood prevention and drought resistance. In the flood prevention and drought resistance operation process, the field condition is complex and severe. On the one hand, different requirements on hydraulic performance are required according to the site situation, and on the other hand, equipment maintenance and replacement are required to be carried out rapidly due to emergency of the site situation. In order to reduce weight and volume, the traditional submerged motor pump has high integration level of internal structure, and the relationship among all parts is complicated. When realizing light and small, greatly increase the degree of difficulty of equipment maintenance and part change. Meanwhile, the performance of a single pump is limited by hydraulic components, the adjustable range is limited, and the adaptability to complex and changeable situations on site is limited.

Disclosure of utility model

The technical problem to be solved by the application is to provide a submersible electric pump aiming at the defects in the prior art.

A submersible electric pump comprising:

The motor module comprises a motor inner structure, an outer cylinder body used for surrounding the motor inner structure and a driving shaft partially extending out of the outer cylinder body;

The hydraulic module is arranged at the extending end of the driving shaft and comprises a diversion shell and an impeller which is accommodated in the diversion shell and is detachably arranged on the driving shaft;

The motor driving device comprises an outer cylinder body, a motor and a guide shell, wherein the motor is arranged in the outer cylinder body, a mounting plate is arranged between the outer cylinder body and the guide shell, the motor inner structure is covered in the outer cylinder body by the mounting plate, a bearing for rotatably supporting the driving shaft is arranged on one side, close to the inner part of the outer cylinder body, of the mounting plate, a sealing structure is arranged on one side, close to the hydraulic module, of the mounting plate, the sealing structure is detachably arranged on the mounting plate, and the guide shell is detachably arranged on the mounting plate or the sealing structure.

Optionally, the hydraulic module at least comprises an axial flow pump hydraulic module;

For the axial flow pump hydraulic module, the flow guiding shell comprises a connecting seat, an impeller chamber and a rectifier, wherein the impeller is positioned in the impeller chamber;

The connecting seat is detachably connected with the mounting plate, a water inlet channel is arranged on the connecting seat, and a water outlet channel is arranged on the whole fluid.

Optionally, the impeller chamber is detachably connected with the connecting seat, and the impeller chamber is detachably connected with the rectifier.

Optionally, the hydraulic module comprises at least a centrifugal pump hydraulic module.

Optionally, the sealing structure comprises a sealing support fixed on the mounting plate and a mechanical sealing device accommodated in the sealing support;

the mechanical sealing device is arranged in the oil cavity and is surrounded by the lubricating oil in the oil cavity.

Optionally, the mechanical sealing device is a double-end mechanical sealing device.

Optionally, the sealing support is surrounded by the flow guiding housing, the sealing support and the flow guiding housing together forming a water inlet channel.

Optionally, the seal holder is provided with a tapered structure on a side close to the impeller to act as a part of the side wall of the water inlet channel.

Optionally, the submerged motor pump is provided with a plurality of hydraulic modules with different specifications, and the hydraulic modules with different specifications can be mutually replaced and installed.

Optionally, the submerged pump is provided with a plurality of hydraulic modules, and each hydraulic module can be mutually replaced and installed on the motor module, wherein the hydraulic modules at least comprise a centrifugal pump hydraulic module, an axial flow pump hydraulic module and an oblique flow pump hydraulic module.

The submerged motor pump provided by the application has clear structural functional structure division, solves the problems of complex structure, various functional associations of parts such as hydraulic power and the like and difficult disassembly, replacement and maintenance of the traditional submerged motor pump, can realize the submerged motor pump structure which can conveniently replace different hydraulic components and sealing components by non-professional personnel, can conveniently disassemble and maintain and conveniently replace a hydraulic module, and can greatly adjust the hydraulic performance.

Drawings

FIG. 1 is a schematic diagram of a submersible pump according to an embodiment of the application.

FIG. 2 is a schematic diagram of a submersible pump according to an embodiment of the application.

Fig. 3 is a schematic block diagram of a submersible electric pump in an embodiment of the application.

Reference numerals are motor module 10, motor inner structure 11, outer cylinder 12, driving shaft 13, mounting plate 14, bearing 15, hydraulic module 20, diversion housing 21, coupling seat 211, impeller chamber 212, rectifier 213, impeller 22, sealing structure 30, sealing support 31, tapered structure 311, mechanical sealing device 32.

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the application. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments of the present application and the features of the embodiments may be combined with each other without collision.

It should be understood that the conventional submersible electric pump has high integration of internal structure and complicated relationship among various parts in order to reduce weight and volume. When realizing light and small, greatly increase the degree of difficulty of equipment maintenance and part change. Meanwhile, the performance of a single pump is limited by hydraulic components, the adjustable range is limited, and the adaptability to complex and changeable situations on site is limited. Therefore, the hydraulic module is improved in structure, so that the difficulty in equipment maintenance and part replacement is reduced, and the hydraulic module is convenient to replace, so that the hydraulic module is better suitable for complex and changeable situations on site.

Specifically, when the common submerged electric pump and the hydraulic components are replaced, the structures such as sealing, bearing and lubrication of a unit are destroyed, and key functions and safety performance of equipment are affected. According to the scheme, functions of all parts are fully distinguished and isolated structurally, so that independent disassembly and assembly of the hydraulic component and the sealing component are realized, and disassembly, assembly and maintenance are more convenient. On the basis of the advantages, the replacement of hydraulic components of different specifications and different types is realized at the same time, and further, the wide-range change of the water conveying performance is realized. The following is a detailed description with reference to the accompanying drawings.

Referring to fig. 1 and 2, the submersible electric pump includes a motor module 10, a hydraulic module 20. The motor module 10 includes a motor inner structure 11, an outer cylinder 12, and a driving shaft 13, wherein the outer cylinder 12 is used for surrounding the motor inner structure 11, and the driving shaft 13 partially extends out of the outer cylinder 12. The hydraulic module 20 is disposed at an extended end of the driving shaft 13, and the hydraulic module 20 includes a guiding casing 21 and an impeller 22, where the impeller 22 is accommodated in the guiding casing 21 and detachably mounted on the driving shaft 13.

A mounting plate 14 is provided between the outer cylinder 12 and the deflector housing 21, the mounting plate 14 sealing the motor inner structure 11 within the outer cylinder 12. On the side of the mounting plate 14 close to the interior of the outer cylinder 12, a bearing 15 for rotatably supporting the drive shaft 13 is arranged, and on the side of the mounting plate 14 close to the hydraulic module 20, a sealing structure 30 is arranged. The seal structure 30 is detachably arranged on the mounting plate 14, and the diversion housing 21 is detachably mounted on the mounting plate 14 or the seal structure 30.

Specifically, the motor module 10 is used for providing power, and includes a motor inner structure 11, an outer cylinder 12, a driving shaft 13, and a mounting plate 14. The motor inner structure 11 is enclosed by the outer cylinder 12 and the mounting plate 14, and the drive shaft 13 protrudes from the side of the mounting plate 14 to the outside for outputting power. Impeller 22 is mounted on drive shaft 13 for rotation with drive shaft 13.

Further, a bearing 15 is arranged on the side of the mounting plate 14 close to the inside of the outer cylinder 12, a sealing structure 30 is arranged on the side of the mounting plate 14 close to the hydraulic module 20, the bearing 15 is used for rotatably supporting the driving shaft 13, and the sealing structure 30 is used for sealing of the motor to prevent fluid from entering the inside of the motor module 10. In this structure, the sealing structure 30 is independent of the mounting plate 14, has a detachable relation with the mounting plate 14, and can be directly detached from the mounting plate 14 during maintenance without detaching the mounting plate 14, so that the maintenance is more convenient and less disturbed by other structures. In addition, compared with the scheme that the bearing and the sealing structure are integrated on the same mounting seat, the bearing of the driving shaft is mounted on the mounting plate, and the sealing structure is arranged separately from the mounting plate, so that the manufacturing precision required by the mounting plate is reduced.

As shown in fig. 1 and 2, in one embodiment, the inducer housing 21 is removably mounted to the mounting plate 14 with the impeller 22 received within the inducer housing 21 and removably mounted to the drive shaft 13. Therefore, the guide casing 21 and the impeller 22 are both detachably mounted, and when the hydraulic module 20 is replaced by a different hydraulic module, the guide casing 21 can be detached from the mounting plate 14, and then the impeller 22 can be detached from the driving shaft 13. When installing the hydraulic module 20, a new impeller 22 may be first installed on the drive shaft 13, followed by a new inducer housing 21 being installed on the mounting plate 14. In addition, in other embodiments, the guiding shell is detachably mounted on the sealing structure, which is not shown in the drawings, and the dismounting process is similar and will not be repeated here.

In the structure shown in fig. 1 and 2, the seal structure 30 is surrounded by the guide housing 21, and the guide housing 21 needs to be detached first when the seal structure 30 is detached and maintained. Specifically, the deflector housing 21 is first removed from the mounting plate 14, and after maintenance or replacement of the seal 30, the deflector housing 21 is reinstalled on the mounting plate 14 without removing the mounting plate 14 and the bearings on the mounting plate 14.

With further reference to fig. 1, in the structure shown in fig. 1, the part a structure above the mounting plate 14 includes the hydraulic module 20 and the sealing structure 30, and the part B structure below the mounting plate 14 is the motor internal structure 11 and the bearing. Since the part B structure is not affected when the part a structure is detached, maintenance of the hydraulic module 20 and the seal structure 30 is more convenient and is not affected by the part B structure from below the mounting plate 14.

It should be appreciated that the hydraulic module 20 may be directly detached without affecting the critical functionality, safety structures of the machine set such as seals, lubrication, bearings, etc., thereby greatly facilitating replacement and maintenance of the hydraulic module. The hydraulic modules with different parameters and specifications can be replaced when the pump is replaced, and the hydraulic modules with different types can also be replaced so as to change the type of the pump.

As shown in fig. 3, the submersible electric pump comprises a motor module and a plurality of hydraulic modules, wherein the hydraulic modules comprise a hydraulic module 1, a hydraulic module N, and the hydraulic modules N can be installed on the motor module in an adaptive manner, and can be installed in a replacement manner according to the need. In an embodiment, the submerged motor pump is provided with a plurality of hydraulic modules with different specifications, and the hydraulic modules with different specifications can be mutually replaced and installed, in fig. 3, the hydraulic modules 1, the hydraulic modules N are hydraulic modules with different specifications, the parameters of the hydraulic modules with different specifications are different, and the operation parameters of the pump can be changed through replacement and installation.

Further, the submersible electric pump is provided with a plurality of hydraulic modules, each hydraulic module can be mutually replaced and installed on the motor module, and the hydraulic modules at least comprise a centrifugal pump hydraulic module, an axial flow pump hydraulic module and an diagonal flow pump hydraulic module. As shown in fig. 3, the submersible electric pump comprises a motor module and a plurality of hydraulic modules, wherein the hydraulic modules comprise a hydraulic module 1, a hydraulic module N, and the hydraulic modules N can be installed on the motor module in an adaptive manner, and can be installed in a replacement manner according to the need. When the hydraulic module of different types is replaced, the type of the submersible electric pump is also changed, so that the type of the submersible electric pump can be changed through the replacement installation of the hydraulic module. Illustratively, the hydraulic module 1 is an axial flow pump and the hydraulic module 2 is a centrifugal pump. When the hydraulic module 2 is mounted to the motor module using the hydraulic module 1 instead of the hydraulic module, the submersible electric pump is converted from an axial flow pump to a centrifugal pump. Specifically, the hydraulic module 20 shown in fig. 1 is an axial flow pump structure, and the hydraulic module 20 shown in fig. 2 is a centrifugal pump structure, and the two can be mutually converted by interchange.

The submersible electric pump provided by the application improves the adjustable range of the performance of the submersible electric pump by replacing and installing hydraulic modules with different specifications and different types, and can meet various use requirements of complexity and variability.

In one embodiment of the application, the hydraulic module comprises at least an axial flow pump hydraulic module. Referring to fig. 1, for an axial flow pump hydraulic module, the guide housing 21 includes a coupling seat 211, an impeller chamber 212, and a rectifying body 213, wherein the impeller 22 is located in the impeller chamber, the coupling seat is located on a side of the impeller chamber close to the motor module 10, and the rectifying body is located on a side of the impeller chamber away from the motor module 10. The connecting seat is detachably connected with the mounting plate 14, a water inlet channel is arranged on the connecting seat, and a water outlet channel is arranged on the whole fluid 213. In one embodiment, the impeller chamber is detachably connected with the connecting seat, and the impeller chamber is detachably connected with the rectifier.

Based on the structure shown in fig. 1, one end of the coupling seat 211 is detachably mounted on the mounting plate 14, and the impeller chamber 212 is located between the coupling seat 211 and the rectifier 213 and is detachably connected with the coupling seat 211 and the rectifier 213, respectively. The connecting seat 211 is provided with a water inlet channel, the rectifying body 213 is provided with a water outlet channel, and water entering from the water inlet channel enters the water outlet channel after being pressurized by the impeller 22 in the impeller chamber 212 and is discharged through the water outlet channel. In a specific embodiment, the impeller chamber 212, the coupling seat 211 and the rectifier 213 are detachably connected, and the impeller chamber 212 is a vulnerable part under certain severe working conditions, so that the impeller chamber 212 can be independently replaced, thereby reducing the maintenance cost in the later period. Further, in one embodiment, the releasable connection between the coupling seat 211 and the mounting plate 14 is embodied as a bolted connection.

In one embodiment of the application, the hydraulic module comprises at least a centrifugal pump hydraulic module. Referring to fig. 2, the hydraulic module 20 is provided in a centrifugal pump structure, and the impeller 22 is provided in an impeller structure of the centrifugal pump.

Referring to fig. 1 and 2, in one embodiment of the present application, the sealing structure 30 includes a sealing support 31, a mechanical sealing device 32. A seal mount 31 is secured to the mounting plate 14 and a mechanical seal 32 is received within the seal mount 31. The seal holder 31 has an oil chamber formed therein and having lubricating oil therein, and the mechanical seal device 32 is disposed in the oil chamber and surrounded by the lubricating oil in the oil chamber. In one embodiment, the mechanical seal 32 is a double-ended mechanical seal 32.

Specifically, the seal carrier 31 is mounted on the mounting plate 14 and is removable. The mechanical seal is arranged in the seal support 31, the mechanical seal is specifically a double-end mechanical seal, two ends of the mechanical seal are respectively provided with a set of friction pairs, lubricating oil is injected into the seal support 31, and the mechanical seal can be lubricated, so that the sealing effect of the mechanical seal is enhanced.

Referring to fig. 1 and 2, in an embodiment of the present application, the seal holder 31 is surrounded by the guide housing 21, and the seal holder 31 forms a water inlet passage together with the guide housing 21. In one embodiment, the seal holder 31 is provided with a tapered structure 311 on a side near the impeller 22 to serve as a portion of the sidewall of the water intake passage. By the arrangement, the appearance structure of the sealing support 31 is fully utilized, the sealing support 31 and the diversion shell 21 are combined together to form a water inlet channel, and the structure is more compact.

Therefore, the submersible electric pump provided by the application has clear structural functional structure division, solves the problems of complex structure, various functional associations of parts such as hydraulic power and the like and difficult disassembly, replacement and maintenance of the traditional submersible electric pump, can realize the submersible electric pump structure which can conveniently replace different hydraulic components and sealing components by non-professional personnel, and can conveniently disassemble, maintain and conveniently replace the hydraulic module so as to greatly adjust the hydraulic performance.

In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. 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 application or exceeding the scope of the application as defined in the accompanying claims.

Claims

1. A submersible electric pump, comprising:

A mounting plate is arranged between the outer cylinder body and the diversion shell body, and the mounting plate covers the internal structure of the motor in the outer cylinder body; the hydraulic module comprises a mounting plate, a guide shell, a sealing structure, a bearing, a guide shell and a hydraulic module, wherein the bearing is arranged on one side of the mounting plate, which is close to the inner part of the outer cylinder, and is used for rotatably supporting the driving shaft;

The hydraulic module at least comprises an axial flow pump hydraulic module;

2. The submersible electric pump of claim 1, wherein the impeller chamber is removably connected to the coupling seat and the impeller chamber is removably connected to the rectifier.

3. The submersible electric pump of claim 1, wherein the hydraulic module comprises at least a centrifugal pump hydraulic module.

4. The submersible electric pump of claim 1, wherein the seal comprises a seal mount secured to the mounting plate, and a mechanical seal received within the seal mount;

5. The submersible electric pump of claim 4, wherein the mechanical seal is a double-ended mechanical seal.

6. The submersible electric pump of claim 4, wherein the seal carrier is surrounded by the deflector housing, the seal carrier and deflector housing together forming a water intake channel.

7. The submersible electric pump of claim 6, wherein the seal support is provided with a tapered structure on a side near the impeller to act as a portion of the side wall of the intake channel.

8. The submersible pump of claim 1, wherein the submersible pump is configured with a plurality of hydraulic modules of different gauges, and wherein the hydraulic modules of different gauges are interchangeable.

9. The submersible pump of claim 1 or 8, wherein the submersible pump is configured with a plurality of hydraulic modules of the type that can be interchangeably mounted on the motor module, the hydraulic modules of the type comprising at least a centrifugal pump hydraulic module, an axial pump hydraulic module, and a diagonal pump hydraulic module.