CN217950704U

CN217950704U - Modular multi-stage high-pressure submersible electric pump

Info

Publication number: CN217950704U
Application number: CN202221693896.2U
Authority: CN
Inventors: 王冠超; 李佳
Original assignee: Shandong Shenwei Pump Technology Co ltd
Current assignee: Shandong Shenwei Pump Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-02
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a multistage high-pressure submerged motor pump of modularization belongs to pump production and makes technical field. The water absorption part is connected with the power device through a main shaft, the sealing part is arranged between the water absorption part and the power device, and the water outlet end of the water absorption part, which is far away from the sealing part, is provided with the anti-reflux device; the utility model discloses the modularized design to adopt precision casting technology, efficiency is higher. The dynamic and static balance of the impeller can meet the requirements of various working conditions. The universality and interchangeability of the hydraulic component are improved to the maximum extent, and the cost is lower.

Description

Modular multi-stage high-pressure submersible electric pump

Technical Field

The utility model relates to a multistage high pressure submerged motor pump of modularization belongs to pump manufacturing technical field.

Background

QJ is an energy-saving product designed according to national standards, is mainly used for extracting underground water from deep wells, and is also widely applied to farmland irrigation, water supply and drainage of cities and industrial and mining enterprises, water supply for people and livestock in plateau and mountain areas, pressurized water supply for high-rise buildings and the like. The pump and the submersible motor are integrated to be submerged underwater for working. The device has the advantages of compact structure, small volume, low noise, no secondary pollution, convenient installation, use and maintenance, safe and reliable operation, high efficiency, energy conservation, no need of building a pump house and the like. The vertical type water supply and drainage pump is vertically installed in a deep well, can be used in an open water area and used as a ground pump, and has the advantages of small occupied space, no pollution and leakage, convenience in installation and use and the like compared with other ground water supply and drainage pumps. Can be used for water supply in districts, high-rise buildings, villas and other places. The multistage high-pressure submersible electric pump is vertical, and the impeller is centrifugal or mixed flow; adopting water to lubricate a bearing; the connection with the motor adopts a coupling rigid connection. The pump impeller rotates under the driving of the motor to generate centrifugal force, so that the energy of the liquid is increased, and water is lifted under the flow guide effect of the pump shell. The upper end of the water pump is provided with a check valve body to prevent the working parts from being damaged by backflow water when the electric pump is stopped. The valve is provided with a water drainage hole, so that water in the pipeline can be slowly drained, and the pipeline is prevented from frost cracking in winter.

The prior art has the following technical defects:

1. the general pump adopts an inner runner integral casting structure, any part is abraded and damaged in long-term operation, the whole pump body needs to be maintained or replaced, and the cost of replacing the pump body is high when the pump body is damaged.

2. The interstage flow channel has a complex structure, cannot adopt a precise casting process, cannot precisely polish the blank surface of the flow channel, and has high efficiency loss.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects in the prior art are overcome, the modular multistage high-pressure submersible electric pump is provided, the modular design is adopted, a precise casting process is adopted, and the efficiency is higher. The dynamic and static balance of the impeller can meet the requirements of various working conditions. The universality and interchangeability of the hydraulic component are improved to the maximum extent, and the cost is lower.

The modular multistage high-pressure submersible electric pump comprises a power device, a sealing part, a water absorbing part and an anti-reflux device, wherein the water absorbing part is connected with the power device through a main shaft, the sealing part is arranged between the water absorbing part and the power device, and the water outlet end of the water absorbing part, which is far away from the sealing part, is provided with the anti-reflux device;

the portion of absorbing water is including the clamp plate of intaking, go out the water clamp plate, wear the thick stick, the stator, the impeller, middle section casing and baffle, suit multiunit impeller on the main shaft, the impeller both ends are equipped with the clamp plate of intaking and go out the water clamp plate respectively, it is equipped with multiunit middle section casing to intake between clamp plate and the play water clamp plate, middle section casing suit impeller, be equipped with multiunit stator and baffle between middle section casing and the impeller, it holds the chamber to form between stator and the baffle, it is used for holding the impeller to hold the chamber, wear the thick stick to run through into water clamp plate and play water clamp plate edge, it is equipped with the nut to wear the thick stick both ends, the nut is used for compressing tightly into water clamp plate and play water clamp plate.

Working process or working principle:

when the device is installed and used, the power device is firstly connected to the main shaft, the water inlet pressing plate, the positioning ring, the impeller, the guide vane and the partition plate are sequentially installed on the main shaft, the water outlet pressing plate is finally added after repeated installation, the penetrating rod penetrates through the water inlet pressing plate and the water outlet pressing plate after assembly is completed, and then the nut is used for compressing.

Preferably, a positioning ring is arranged between the guide vane and the partition plate.

Preferably, the inner surface of the middle section shell is provided with a positioning ring, and the positioning ring is matched with the positioning ring.

Preferably, its characterized in that, middle section casing one end is equipped with first ring platform, and the middle casing other end is equipped with the second ring platform, first ring platform and second ring platform looks adaptation.

Preferably, a sealing ring mounting groove is formed on the first circular ring platform.

Preferably, the surface of the outer ring of the middle section shell is provided with an annular groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up stator, impeller and middle section casing, adopt modularization project organization in the runner, make simple structure compact, accomplish "which bad which trades, avoid" bad all trades ", reduce user maintenance spare part cost and time cost, make fortune dimension simplifier, compare with the general pump of same parameter, the steady cost of operation dimension is lower, and the price/performance ratio is higher.

2. The utility model discloses stator, impeller and middle section casing etc. carry out module optimization water conservancy part, make it can adopt the manufacturing of precision casting technology, reduce the inside loss of multistage pump, raise the efficiency.

Drawings

Fig. 1 is one of the schematic structural diagrams of embodiment 1 of the present invention;

fig. 2 is a second schematic structural diagram of embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the structure of the middle shell of the present invention;

in the figure: 1. a check valve; 2. a water outlet section; 3. penetrating a bar; 4. a guide vane; 5. an impeller; 6. a middle section shell; 7. a partition plate; 8. a front seal ring; 9. a rear seal ring; 10. a water inlet pressure plate; 11. a suction elbow; 12. a lead bearing; 13. a bearing body; 14. a motor frame; 15. a motor connecting frame; 16. a motor; 17. a bond II; 18. a bond I; 19. a coupling; 20. a gland; 21. a shaft sleeve; 22. a bond III; 23. a protective cover; 24. a bond IV; 25. a guide vane; 26. a main shaft; 27. a shaft nut I; 28. a shaft nut II; 29. a back guide bearing; 30. a water outlet pressing plate; 31. a positioning ring; 61. a sealing ring mounting groove; 62. positioning the circular ring; 63. a second annular table; 64. a circular groove; 65. a first annular table.

Detailed Description

Example 1

As shown in fig. 1 to 4, the modular multistage high-pressure submersible electric pump of the present invention comprises a power device 16, a sealing portion, a water absorption portion and an anti-reverse flow device, wherein the anti-reverse flow device is a check valve 1, the water absorption portion is connected to the power device 16 through a main shaft 26, the power device 16 is a motor, the sealing portion is arranged between the water absorption portion and the power device 16, and the water outlet end of the water absorption portion, which is far away from the sealing portion, is provided with the anti-reverse flow device; the sealing part comprises a motor connecting frame 15, a motor frame 14, a coupler 19, a gland 20, a shaft sleeve 21 and a front guide bearing 12, the motor is connected with a main shaft 26 through the coupler 19, the main shaft 26 is connected with the coupler 19 through a key I18, the key I is C18x11x145, the output end of the motor is connected through a key II 17, the key II 17 is C14x9x80, the motor connecting frame 15 is fixed on the motor, the motor connecting frame 15 is connected with the motor frame 14, the gland 20 is installed outside the motor frame 14, a bearing body 13 and the front guide bearing 12 are sleeved in the gland 20, the shaft sleeve 21 is sleeved in the front guide bearing 12, a key III 22 is arranged between the shaft sleeve 21 and the main shaft 26, the key III is C10x8x20, and a protective cover 23 is sleeved outside the main shaft.

The water absorption part comprises a water inlet pressing plate 10, a water outlet pressing plate 30, a penetrating bar 3, guide vanes 25, impellers 5, a middle section shell 6 and a partition plate 7, multiple groups of impellers 5 are sleeved on a main shaft 26, a key IV 24 is arranged between each impeller 5 and the main shaft 26, the key IV 24 is C10x8x60, the water inlet pressing plate 10 and the water outlet pressing plate 30 are arranged at two ends of each impeller 5 respectively, a rear guide bearing 29 is arranged between each guide vane 25 and each impeller 5 to be connected, multiple groups of middle section shells 6 are arranged between each water inlet pressing plate 10 and each water outlet pressing plate 30, the impellers 5 are sleeved on the middle section shells 6, multiple groups of guide vanes 25 and partition plates 7 are arranged between each middle section shell 6 and each impeller 5, a containing cavity is formed between each guide vane 25 and each partition plate 7 and used for containing each impeller 5, the penetrating bar 3 penetrates through the edges of the water inlet pressing plate 10 and the water outlet pressing plate 30, nuts are arranged at two ends of the penetrating bar 3, and the nuts are used for compressing the water inlet pressing plate 10 and the water outlet pressing plate 30. The middle section shell 6 adopts a forged piece, adopts a high-efficiency modular design, has a simple structure, greatly reduces the casting process difficulty, avoids the defects caused by casting, has good mechanical property and strong bearing capacity, improves the reliability of the pump body, and greatly improves the interchangeability of parts in the flow channel. And through improving the manufacturing process of the pump, the structure is regular, and the surface that overflows can be machined, does benefit to improving water pump efficiency, and one end of main shaft 26 is fixed through shaft nut I27 and shaft nut II 28, and the interior survey of shaft nut I27 is equipped with last stage guide vane 25, and the outside is equipped with water outlet section 2, and water outlet section 2 connects check valve 1. A positioning ring 31 is arranged between the guide vane 25 and the partition plate 7. The inner surface of the middle shell 6 is provided with a positioning ring 62, which is matched with the positioning ring 31. One end of the middle section shell 6 is provided with a first circular platform 65, the other end of the middle shell is provided with a second circular platform 63, and the first circular platform 65 is matched with the second circular platform 63. The first annular table 65 is provided with a seal ring mounting groove 61. The surface of the outer ring of the middle shell 6 is provided with a circular groove 64.

The utility model discloses in to the description of the direction and the relative position relation of structure, about all around description about, do not constitute right the utility model discloses a restriction only is the description convenient.

Claims

1. A modularized multistage high-pressure submersible electric pump is characterized by comprising a power device (16), a sealing part, a water absorbing part and an anti-backflow device, wherein the water absorbing part is connected with the power device (16) through a main shaft (26), the sealing part is arranged between the water absorbing part and the power device (16), and the water outlet end, far away from the sealing part, of the water absorbing part is provided with the anti-backflow device;

the water sucking part comprises a water inlet pressing plate (10), a water outlet pressing plate (30), a penetrating rod (3), guide vanes (25), an impeller (5), a middle section shell (6) and a partition plate (7), a plurality of groups of impellers (5) are sleeved on a main shaft (26), the two ends of each impeller (5) are respectively provided with the water inlet pressing plate (10) and the water outlet pressing plate (30), a plurality of groups of middle section shells (6) are arranged between the water inlet pressing plate (10) and the water outlet pressing plate (30), the middle section shells (6) are sleeved with the impellers (5), a plurality of groups of guide vanes (25) and partition plates (7) are arranged between the middle section shells (6) and the impellers (5), a containing cavity is formed between the guide vanes (25) and the partition plates (7) and used for containing the impellers (5), the penetrating rod (3) penetrates through the edges of the water inlet pressing plate (10) and the water outlet pressing plate (30), nuts are arranged at the two ends of the penetrating rod (3), and used for compressing the water inlet pressing plate (10) and the water outlet pressing plate (30).

2. The modular multistage high-pressure submersible electric pump according to claim 1, characterized in that between the guide vanes (25) and the partition (7) there is provided a positioning ring (31).

3. The modular multistage high-pressure submersible electric pump according to claim 2, characterized in that the intermediate housing (6) has, on its inner surface, a positioning ring cooperating with the positioning ring (31).

4. The modular multistage high-pressure submersible electric pump according to any of claims 1 to 3, characterized in that the intermediate housing (6) is provided at one end with a first circular platform (65) and at the other end with a second circular platform (63), the first circular platform (65) being adapted to the second circular platform (63).

5. The modular multistage high pressure submersible electric pump according to claim 4, characterized in that the first annular table (65) is provided with a sealing ring mounting groove (61).

6. The modular multistage high pressure submersible electric pump according to claim 4, characterized in that the surface of the outer ring of the intermediate housing (6) is provided with an annular groove (64).