CN212003638U

CN212003638U - Deep-well pump with high motor shaft rotation stability

Info

Publication number: CN212003638U
Application number: CN202020425767.XU
Authority: CN
Inventors: 张灵辉; 陈建国; 吴应敏
Original assignee: Taizhou Huiteng Pump Industry Co ltd
Current assignee: Taizhou Huiteng Pump Industry Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-24
Anticipated expiration: 2030-03-27

Abstract

The utility model relates to a deep well pump with high motor shaft rotation stability, which comprises a pump component and a motor assembly connected with the pump component, wherein the motor assembly comprises a motor shell and a motor component; the motor shell is sealed end to form a motor cavity in the motor shell, and the motor assembly is arranged in the motor cavity and used for driving the pump assembly to work; the motor assembly comprises an upper mounting seat, a lower mounting seat and a motor shaft, wherein the two ends of the motor shaft are mounted on the upper mounting seat and the lower mounting seat through bearings, a motor rotor is arranged on the motor shaft, the upper mounting seat and the lower mounting seat are attached to the inner wall of the motor shell and limited in the motor shell, and a motor stator surrounding the motor rotor is arranged between the upper mounting seat and the lower mounting seat. The utility model has the characteristics of operating stability is high.

Description

Deep-well pump with high motor shaft rotation stability

Technical Field

The utility model relates to a deep-well pump that motor shaft rotational stability is high.

Background

With the increasing of population year by year, the shortage of domestic water supply is increasingly apparent, the water supply in many areas is unstable in one year, especially in northwest areas, drought is more serious than one year, the use of underground water is more and more extensive, the water supply is often found in deep underground in arid areas, and deep well pumps with strong power are particularly needed for people to use. Therefore, the deep well pump is a pump which is immersed in an underground well to pump and convey water, and is also widely applied to farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, sewage treatment and the like.

The deep-well pump includes pump package spare and motor assembly, motor assembly includes motor casing and motor element, the motor end cover is installed to the motor casing tip, motor element sets up and is used for driving pump package spare work in the motor casing, wherein, the motor end cover passes through sealing washer seal installation on the motor casing, the motor shaft rotates and installs on the motor end cover, because the installation characteristic of motor end cover on the motor casing, the motor shaft can arouse the micro-vibration of motor end cover at the during operation, these micro-vibrations easily make the motor shaft skew take place, make its concentricity change, influence the stability of motor assembly operation, consequently, there is certain improvement part.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a deep-well pump that motor shaft rotational stability is high has the high characteristics of operating stability.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a deep well pump with a high motor shaft rotation stability comprises a pump assembly and a motor assembly connected with the pump assembly, wherein the motor assembly comprises a motor shell and a motor assembly;

the motor shell is sealed end to form a motor cavity in the motor shell, and the motor assembly is arranged in the motor cavity and used for driving the pump assembly to work;

the motor assembly comprises an upper mounting seat, a lower mounting seat and a motor shaft, wherein the two ends of the motor shaft are mounted on the upper mounting seat and the lower mounting seat through bearings, a motor rotor is arranged on the motor shaft, the upper mounting seat and the lower mounting seat are attached to the inner wall of the motor shell and limited in the motor shell, and a motor stator surrounding the motor rotor is arranged between the upper mounting seat and the lower mounting seat.

Through the technical scheme, the motor shaft passes through the bearing and installs on last mount pad and mount pad down, goes up the mount pad and is prescribed a limit to with the inner wall laminating of motor casing down in the motor chamber with the mount pad down, from this, go up the seamless laminating between mount pad and the lower mount pad and the motor casing inner wall, consequently, the motor shaft when rotating, has ensured that the micro-vibration can not appear in last mount pad and the mount pad down to motor shaft pivoted stability has been guaranteed, the stability of the whole operation of deep-well pump has been improved.

Preferably, the motor shell is provided with an outward convex annular groove and an inward concave annular shoulder at the installation station of the motor assembly, the annular groove is positioned above the annular shoulder, the motor assembly is assembled in the motor cavity, and the lower installation seat is abutted against the annular shoulder;

the motor chamber is provided with annular chuck in the top of last mount pad, and circumferential threaded connection has a plurality of spacing bolts on the annular chuck, and the tip of spacing bolt is contradicted on last mount pad, inlay in the ring channel and be equipped with the jump ring, the jump ring chucking is at annular chuck's upper surface.

Through the technical scheme, when the motor assembly is installed, the motor assembly is integrally assembled and enters the motor cavity, the lower mounting seat is abutted to the annular blocking shoulder, the annular chuck is arranged above the upper mounting seat, the upper mounting seat is clamped through the limiting bolt, the stability of the upper mounting seat and the lower mounting seat is improved through the structure, and therefore the stability of the motor shaft is ensured.

Preferably, the head end of the motor casing is sealed through an upper sealing end cover, the tail end of the motor casing is sealed through a lower sealing end cover, the motor cavity is formed inside the motor casing through the upper sealing end cover and the lower sealing end cover, and the upper sealing end cover, the lower sealing end cover and the motor casing are sealed through sealing rings.

Through the technical scheme, the arrangement of the upper sealing end cover and the lower sealing end cover ensures the sealing performance of the motor cavity in the motor casing.

Preferably, the motor shaft passes through the upper sealing end cover to be connected to the pump assembly, and the motor shaft and the upper sealing end cover are in dynamic sealing.

Through above-mentioned technical scheme, adopt the dynamic seal between motor shaft and the last end cover, ensure the leakproofness in motor chamber, wherein, go up the mount pad and replace last end cover to provide the rotational support power to the motor shaft for the last end cover no longer provides the holding power to the rotation of motor shaft, has ensured motor shaft pivoted stability.

Preferably, the motor casing is fixed with the tail end of the pump assembly through an upper sealing end cover.

Through the technical scheme, the upper sealing end cover is fixed with the tail end of the pump assembly, so that the integrated structure of the deep-well pump is realized.

Preferably, the tail end of the pump assembly is abutted against the upper sealing end cover, a plurality of locking bolts are circumferentially arranged on the tail end of the pump assembly and penetrate through the upper sealing end cover and the end part of the locking bolt is in threaded connection with the annular chuck.

Through above-mentioned technical scheme, through the setting of locking bolt, the wholeness of assembling between pump package spare and the motor assembly has been improved.

Preferably, a sealing rubber pad is arranged in a bolt hole for the locking bolt to pass through of the upper sealing end cover.

Through above-mentioned technical scheme, the leakproofness in motor chamber is ensured in the setting of sealing rubber pad.

Preferably, the motor cavity is filled with cooling oil.

Through above-mentioned technical scheme, the purpose that cooling oil reaches and cools down motor element.

To sum up, the utility model discloses a beneficial technological effect does:

the motor shaft passes through the bearing and installs on last mount pad and mount pad down, goes up the mount pad and is injectd with the inner wall laminating of motor casing with lower mount pad in the motor chamber with the inboard wall of motor casing down, from this, goes up the mount pad and the seamless laminating between mount pad and the motor casing inner wall down, consequently, the motor shaft when rotating, has ensured that the micro-vibration can not appear in last mount pad and lower mount pad to motor shaft pivoted stability has been guaranteed, the stability of the whole operation of deep-well pump has been improved.

Drawings

FIG. 1 is a schematic structural diagram of a deep well pump according to the present invention;

FIG. 2 is a schematic cross-sectional view of a deep-well pump according to the teachings of the present invention;

FIG. 3 is a schematic diagram of a pump assembly according to the present invention;

fig. 4 is a schematic view of the installation of the motor assembly according to the technical solution of the present invention.

Reference numerals: 1. a pump assembly; 11. water outlet is saved; 12. a water inlet joint; 13. a filter screen; 14. a drive shaft; 15. an impeller; 2. a motor assembly; 21. a motor housing; 22. a motor assembly; 221. an upper mounting seat; 222. a lower mounting seat; 223. a motor shaft; 224. a motor rotor; 225. a motor stator; 23. an upper sealing end cover; 24. a lower seal end cap; 25. an annular groove; 26. an annular shoulder; 27. a ring chuck; 28. a limit bolt; 29. locking the bolt; 30. and a clamp spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 3, a deep well pump with a high rotational stability of a motor shaft includes a pump assembly 1 and a motor assembly 2 connected to the pump assembly 1. The deep well pump is vertically placed as a reference direction for explanation in the embodiment, the pump assembly 1 comprises a pump body, a water outlet joint 11, a water inlet joint 12, a transmission shaft 14 and an impeller 15, the pump body is in a long cylinder shape, and the pump body is made of stainless steel. The water outlet joint 11 is arranged at the head end of the pump body, the water inlet joint 12 is arranged at the tail end of the pump body, and the water inlet joint 12 is provided with a filter screen 13. The transmission shaft 14 is arranged in the pump body, the transmission shaft 14 is arranged along the axial direction of the pump body, the impellers 15 are arranged on the transmission shaft 14, and when the impellers 15 rotate, water can be sucked from the water inlet joint 12 and then conveyed from bottom to top along the pump body and pumped out from the water outlet joint 11 of the pump body.

As shown in fig. 2 and 4, the motor assembly 2 includes a motor housing 21 and a motor assembly 22. Motor casing 21 is long tube-shape, and motor casing 21 adopts stainless steel for motor casing 21 has stronger support strength. Motor casing 21 connects on the pump body, and coaxial axle center setting between the pump body and motor casing 21, motor casing 21 end to end seals in order to form the motor chamber in its inside.

Specifically, the head end of motor casing 21 is sealed through upper seal end cover 23, and the tail end of motor casing 21 is sealed through lower seal end cover 24, and upper seal end cover 23 and the sealing mode between lower seal end cover 24 and the motor casing 21 adopt the sealing washer sealed, through upper seal end cover 23 and lower seal end cover 24 with at the inside formation of motor casing 21 the motor chamber, motor element 22 sets up and is used for ordering about pump assembly 1 work in the motor chamber, and it has the coolant oil to fill in the motor chamber, and the coolant oil is used for when motor element 22 works, dispels the heat to motor element 22, and the coolant oil is ordinary coolant oil, can purchase from the market, like the coolant oil in the transformer.

The motor cavity serves as an installation station of the motor assembly 22 at a specific position, and the motor assembly 22 is located in the installation station and fixed, and the fixing mode and the working mode of the motor assembly 22 at the installation station are explained below.

The motor assembly 22 includes an upper mounting seat 221, a lower mounting seat 222, and a motor shaft 223 having two ends mounted on the upper mounting seat 221 and the lower mounting seat 222 through bearings, a motor rotor 224 is disposed on the motor shaft 223, the upper mounting seat 221 and the lower mounting seat 222 are disc-shaped, the upper mounting seat 221 and the lower mounting seat 222 are attached to the inner wall of the motor casing 21 and are limited on the mounting position of the motor casing 21, and a motor stator 225 surrounding the motor rotor 224 is disposed between the upper mounting seat 221 and the lower mounting seat 222. The end of the motor shaft 223 penetrates through the upper sealing end cover 23 and is connected to the transmission shaft 14 of the pump assembly 1 through a coupling, and a dynamic seal is adopted between the motor shaft 223 and the upper sealing end cover 23 to ensure that no leakage exists between the motor shaft 223 and the upper sealing end cover 23 when the motor shaft 223 rotates.

The motor casing 21 is provided with a convex annular groove 25 and a concave annular shoulder 26 at the mounting station, the annular groove 25 is located above the annular shoulder 26, when the motor component 22 is integrally assembled in the motor cavity, the motor component 22 is located between the annular groove 25 and the annular shoulder 26, and the lower mounting seat 222 abuts against the annular shoulder 26 to limit the downward movement of the lower mounting seat 222.

The motor casing 21 is further provided with an annular chuck 27 in the motor cavity, the annular chuck 27 is located above the upper mounting seat 221, the annular chuck 27 is circumferentially and threadedly connected with a plurality of limiting bolts 28, and the end portions of the limiting bolts 28 abut against the upper mounting seat 221. Wherein, install jump ring 30 in the ring channel 25, jump ring 30 is used for the upper surface of chucking ring chuck 27, from this, reaches the fixed purpose in the motor chamber of motor element 22.

Wherein, motor casing 21 is fixed mutually with the water inlet joint 12 of pump package spare 1 through upper seal end cover 23, the lower terminal surface of water inlet joint 12 is contradicted on upper seal end cover 23, circumference is provided with a plurality of locking bolt 29 on the water inlet joint 12, locking bolt 29 passes water inlet joint 12 lower terminal surface and upper seal end cover 23 respectively with pump body axial direction, the tip threaded connection of locking bolt 29 is in annular chuck 27, through locking bolt 29's effect, can fix water inlet joint 12 and upper seal end cover 23, in order to realize being connected of pump package spare 1 and motor assembly 2. It should be noted that the bolt holes of the upper end cover 23 for installing the locking bolts 29 are provided with sealing rubber pads to prevent the cooling oil in the motor cavity from seeping out.

In this application, motor shaft 223 passes through the bearing and installs on last mount pad 221 and lower mount pad 222, go up mount pad 221 and mount pad 222 down in the motor chamber with the inner wall laminating of motor casing 21 and by injectd, therefore, go up mount pad 221 and the seamless laminating between mount pad 222 and the motor casing 21 inner wall down, consequently, motor shaft 223 is when rotating, guaranteed that little vibration can not appear in last mount pad 221 and lower mount pad 222, thereby motor shaft 223 pivoted stability has been guaranteed, the stability of the whole operation of deep-well pump has been improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A deep well pump with high motor shaft rotation stability comprises a pump assembly (1) and a motor assembly (2) connected to the pump assembly (1), and is characterized in that the motor assembly (2) comprises a motor shell (21) and a motor assembly (22);

the motor shell (21) is sealed end to form a motor cavity inside, and the motor assembly (22) is arranged in the motor cavity and used for driving the pump assembly (1) to work;

motor element (22) include mount pad (221), mount pad (222) down and both ends pass through motor shaft (223) that the bearing was installed on last mount pad (221) and mount pad (222) down, be provided with motor rotor (224) on motor shaft (223), go up mount pad (221) and mount pad (222) down and the inner wall laminating of motor casing (21) and be injectd in motor casing (21), it is provided with around motor stator (225) outside motor rotor (224) to go up between mount pad (221) and mount pad (222) down.

2. The deep-well pump with the motor shaft with high rotational stability is characterized in that the motor casing (21) is provided with a convex annular groove (25) and a concave annular retaining shoulder (26) at a mounting station of the motor assembly (22), the annular groove (25) is positioned above the annular retaining shoulder (26), the motor assembly (22) is assembled in a motor cavity, and the lower mounting base (222) abuts against the annular retaining shoulder (26);

the motor chamber is provided with ring chuck (27) in the top of last mount pad (221), and circumference threaded connection has a plurality of spacing bolts (28) on ring chuck (27), and the tip of spacing bolt (28) is contradicted on last mount pad (221), it is equipped with jump ring (30) to inlay in ring channel (25), jump ring (30) chucking is at the upper surface of ring chuck (27).

3. The deep well pump with high motor shaft rotation stability as claimed in claim 2, characterized in that the head end of the motor casing (21) is sealed by an upper end cap (23), the tail end of the motor casing (21) is sealed by a lower end cap (24), the motor cavity is formed inside the motor casing (21) by the upper end cap (23) and the lower end cap (24), and the upper end cap (23) and the lower end cap (24) are sealed with the motor casing (21) by sealing rings.

4. A deep well pump with high rotational stability of motor shaft according to claim 3, characterized in that the motor shaft (223) passes through the upper end cap (23) to be connected to the pump assembly (1), and the motor shaft (223) is in dynamic seal with the upper end cap (23).

5. Deep-well pump with high rotational stability of motor shaft according to claim 3, characterized in that the motor housing (21) is fixed to the rear end of the pump assembly (1) by means of an upper sealing end cap (23).

6. The deep-well pump with the motor shaft high in rotational stability is characterized in that the tail end of the pump assembly (1) abuts against the upper sealing end cover (23), a plurality of locking bolts (29) are circumferentially arranged on the tail end of the pump assembly (1), the locking bolts (29) penetrate through the upper sealing end cover (23), and the end portion of the locking bolts is in threaded connection with the annular chuck (27).

7. Deep-well pump with high rotational stability of motor shaft according to claim 6, characterized in that the upper sealing end cover (23) is provided with a sealing rubber pad in the bolt hole for the locking bolt (29) to pass through.

8. The deep-well pump with high motor shaft rotation stability as claimed in claim 1, wherein the motor cavity is filled with cooling oil.