CN205544720U

CN205544720U - Submersible electric motor

Info

Publication number: CN205544720U
Application number: CN201620116279.4U
Authority: CN
Inventors: 章正反
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-08-31
Anticipated expiration: 2026-02-04

Abstract

The utility model provides a submersible electric motor, including casing, stator, rotor, pivot, bearing, mechanical seal subassembly, bearing cap and end cover, the casing is inside to be equipped with the ring channel that is used for installing the nonrust steel drum of rotor, pivot and bearing and is used for holding the stator, and the stator transversely clamps in the ring channel, and the dress is worn in nonrust steel drum to the rotor, pivot from bottom to up overlap in proper order be equipped with that the primary shaft holds, rotor and second bearing, the rotor is arranged in the inner ring of stator, the bearing cap passes pivot and spiral -lock at the second bearing that lies in casing upper portion, the end cover passes and stretches out in the pivot of casing part and install in the upper portion of bearing cap, the mechanical seal subassembly pass stretch out in the pivot of casing part and place the bearing cap in and the end cover between, the mechanical seal subassembly through with the closely cooperating with the middle part opening of sealed bearing lid and end cover of bearing cap and end cover. The utility model provides a pair of submersible electric motor can put forward the high leakproofness ability, and the to avoid electrical card is died, increase of service life.

Description

Submersible electric motor

Technical field

This utility model relates to electric motors, in particular to a kind of submersible electric motor.

Background technology

Submersible electric motor can be as the supporting power source of various submarine mechanicals, its normal and pump group Close and use.Illustrating with water pump, water pump is using submersible electric motor as power source, submersible electric motor The pumping equipment driving water pump completes the process of whole pumping.

But, owing to submersible electric motor needs to carry out operation under water for a long time, moisture is to diving The order of severity of the erosion of motor is directly connected to the service life of submersible electric motor, therefore The sealing problem of submersible electric motor has become as the problem that this field is particularly important, the highest The seal approach of rank is very urgent, and the seal approach of common submersible electric motor is as follows:

Mode one: the simple mode using mechanical seal, mechanical seal can be to a certain degree On seal up submersible electric motor rotating shaft exit position, but be as the prolongation of use time, machine Tool sealing can gradually wear out, and the gap produced after abrasion can make water enter motor interior, Cause and leak electricity into water, thus shorten the service life of motor.

Mode two: using the mode of resin seal stator, rotor does not seal, but Directly contacting with water, in use, the impurity in water enters inside rotor, thus electric Machine rotor is stuck, causes motor electric leakage, has lost the service life of submersible electric motor.

Utility model content

In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of novel Submersible electric motor, improve submersible electric motor ground sealing property, extend the making of submersible electric motor Use the life-span.

This utility model provides a kind of submersible electric motor, including housing, stator, rotor, Rotating shaft, bearing, mechanical sealing assembly, bearing cap and end cap.

Described enclosure interior be provided with the stainless steel cask for installing rotor, rotating shaft and bearing and For accommodating the cannelure of described stator, described stator is laterally installed in cannelure, described Rotor is installed in stainless steel cask.

Described rotating shaft is set with clutch shaft bearing, rotor and the second bearing, institute the most successively Stating rotor to be positioned in the internal ring of stator, described bearing cap is being positioned at housing through rotating shaft spiral-lock On second bearing on top, described end cap is through stretching out in the rotating shaft of housing parts and being installed on The top of described bearing cap, described mechanical sealing assembly is through the rotating shaft stretching out in housing parts Be placed between described bearing cap and end cap, described mechanical sealing assembly by with described bearing Lid and end cap closely cooperate to seal the intermediate openings of described bearing cap and end cap.

Further, described housing includes stainless steel cask, the second sleeve and shell；Described Stainless steel cask is sleeved on described second sleeve inner, and described second sleeve set is at described shell Internal.

Further, described second sleeve is resin material.

Further, described second sleeve inner is provided with cannelure, described stator clamping In described annular opening groove.

Further, described clutch shaft bearing is threaded onto the bottom of described rotating shaft and is placed in stainless At the bottom of the chamber of steel drum, described second bearing is threaded onto rotating shaft top and is placed in the top of described housing Aperture position.

Further, the flange that described second bearing upper end is provided with, described second bearing leads to Cross described flange and be installed on the aperture position of described housing upper.

Further, described mechanical sealing assembly includes being installed on the most successively described The first stationary ring, the first rotating ring, spring, the second rotating ring and the second stationary ring in rotating shaft.

Further, described first rotating ring includes the first annulus and the second circle integrally connected Ring, the diameter of described first annulus is less than described second annulus, and described spring housing is connected on described On first annulus, described second rotating ring is oppositely arranged with described first rotating ring, described spring housing Being connected on the lower end of described second rotating ring, described first rotating ring closely cooperates with described second rotating ring, Described first stationary ring is positioned at the lower end of described mechanical sealing assembly, and described second stationary ring is positioned at institute State the upper end of mechanical sealing assembly.

Further, described bearing cap being provided with fixing post, described fixing post offers Screw, described end cap is provided with the through hole for accommodating described fixing post, described bearing cap It is bolted with described end cap.

Further, the closing that described bearing cap surrounds with described enclosure interior stainless steel cask Region is oil-filled cavity, and described rotor is immersed in described oil-filled inside cavity.

Using technique scheme, the technique effect that this utility model produces has:

On the one hand, the submersible electric motor that this utility model provides is provided with mechanical sealing assembly, Mechanical sealing assembly is placed in described bearing cap and end cap through the rotating shaft stretching out in housing parts Between, described mechanical sealing assembly by with the closely cooperating with close of described bearing cap and end cap Sealing the intermediate openings of described bearing cap and end cap, mechanical sealing assembly can be to a certain extent Seal up the rotating shaft exit position of submersible electric motor.

On the other hand, housing and the bearing cap of the submersible electric motor that this utility model provides surrounds Stainless steel cask, the oil-filled cavity of oil-filled formation in stainless steel cask, rotor is immersed in oil-filled chamber body, Can effectively completely cut off the impurity in moisture and water, strengthen sealing effectiveness further.

In conjunction with above 2 points, the submersible electric motor that this utility model provides can improve diving electricity The sealing property of motivation, extends the service life of submersible electric motor.

Accompanying drawing explanation

In embodiment, the required accompanying drawing used is briefly described, it will be appreciated that following attached Figure illustrate only some embodiment of the present utility model, is therefore not construed as scope Limit, for those of ordinary skill in the art, in the premise not paying creative work Under, it is also possible to obtain other according to these accompanying drawings relevant attached in order to be illustrated more clearly that this reality By the technical scheme of new embodiment.

Fig. 1 shows the profile of the submersible electric motor that this utility model provides；

Fig. 2 shows the structural representation of the submersible electric motor that this utility model provides；

Fig. 3 shows the structural representation of the second bearing in Fig. 2；

Fig. 4 shows the structural representation of the mechanical sealing assembly in Fig. 2.

Reference:

1-end cap；2-mechanical sealing assembly；3-bearing cap；

4-rotating shaft；5-the second bearing；6-rotor；

7-stator；8-clutch shaft bearing；9-housing；

91-stainless steel cask；92-the second sleeve；93-shell；

25-the first stationary ring；24-the second rotating ring；23-the first rotating ring；

22-spring；21-the second stationary ring；231-the first annulus；

232-the second annulus；51-flange；52-the second bearing main body；

Detailed description of the invention

In order in more detail this utility model be illustrated, make more below in conjunction with specific embodiment It is expanded on further, but protection domain of the present utility model is not limited thereto, any be familiar with basis Those skilled in the art, in the technical scope that this utility model discloses, can readily occur in Change or replacement, all should contain within protection domain of the present utility model.Therefore this practicality Novel protection domain should described be as the criterion with scope of the claims.

In description of the present utility model, it should be noted that term " " center ", " on ", The orientation of the instruction such as D score, "left", "right", " vertically ", " level ", " interior ", " outward " Or position relationship is based on orientation shown in the drawings or position relationship, it is for only for ease of description This utility model and simplification describe rather than indicate or imply that the device of indication or element are necessary There is specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The restriction of utility model.Additionally, in description of the present utility model, it should be noted that Unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should do Broadly understood, connect for example, it may be fixing, it is also possible to be to removably connect, or one Ground connects；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, also Can be indirectly connected to by intermediary, can be the connection of two element internals.For this For the those of ordinary skill in field, can understand that above-mentioned term is new in this practicality with concrete condition Concrete meaning in type.

As it is shown in figure 1, this utility model provide a kind of submersible electric motor, including housing 9, Stator 7, rotor 6, rotating shaft 4, bearing, mechanical sealing assembly 2, bearing cap 3 and end cap 1。

Housing 9 is internal is provided with the stainless steel cask 91 for installing rotor 6, rotating shaft 4 and bearing And for accommodating the cannelure of stator 7, stator 7 is laterally installed in cannelure, rotor 6 are installed in stainless steel cask 91.

As in figure 2 it is shown, housing 9 includes stainless steel cask the 91, second sleeve 92 and shell 93； It is internal that stainless steel cask 91 is sleeved on the second sleeve 92, and the second sleeve 92 is sleeved on shell 93 Internal.

Housing 9 is the structure of three layers of suit, and stainless steel cask 91 is thin-walled tubular structure, diving It is internal that the rotor 6 of motor is positioned at stainless steel cask 91.Second sleeve 92 is for having certain wall Thick cylinder-like structure, described second sleeve 92 is by liquid resin moulding by casting.Shell 93 For thin-walled tubular structure, shell 93 is the part directly contacted with external environment condition.

Further, as a kind of concrete can embodiment, the second sleeve 92 is resin Material.On the one hand resin material can alleviate the weight of submersible electric motor, reduces production cost, On the other hand being not easy by moisture or air erosion because of resin, therefore sealing effectiveness compares reason Think.

Stator 7 is circulus.Stator 7 is installed in the annular opening within the second sleeve 92 In groove, the outside diameter of stator 7 less than the second sleeve outside diameter.The inner circle of stator Part contacts with stainless steel cask 91.It is separated by by stainless steel cask 91 in the middle of stator 7 and rotor 6. Stator 7 includes stator core and stator winding, and stator winding produces magnetic in the case of energising ?.

Rotor 6 is installed in rotating shaft 4, and rotor 6 is positioned at the medium position of stainless steel cask.Turn Son 6 includes rotor core and rotor windings.The magnetic field that rotor windings produces for cutting stator, And produce induction electromotive force and electric current.

Further, as a kind of concrete can embodiment, rotor core is by 0.5mm Thick silicon steel plate stacking forms.

Further, as a kind of concrete can embodiment, rotor windings is squirrel-cage Rotor or phase-wound rotor.

Rotating shaft 4 is positioned at the center of the submersible electric motor that this utility model provides, described latent Centered by water power motivation one rotating shaft 4, axisymmetrical is arranged.The bottom of rotating shaft 4 is positioned at stainless The bottom of steel drum 91, rotating shaft 4 extends end cap 1 from the bottom position of stainless steel cask 91, The part stretching out end cap 1 connects water pump body part, and rotating shaft 4 is used for transmitting torque, for pump Main body is sent to provide power and support the weight of rotor 6.

Further, as a kind of concrete can embodiment, rotating shaft 4 is column structure.

Further, as a kind of concrete can embodiment, rotating shaft 4 by medium carbon steel or Person's steel alloy is made.

Rotating shaft 4 is set with clutch shaft bearing 8, rotor 6 and the second bearing 5 the most successively, Rotor 6 is positioned in the internal ring of stator 7, and bearing cap 3 is being positioned at shell through rotating shaft 4 spiral-lock On second bearing 5 on body 9 top, end cap 1 is through stretching out in the rotating shaft 4 of housing parts also Being installed on the top of bearing cap 3, mechanical sealing assembly 2 is through stretching out in housing 9 part Rotating shaft 4 is placed between bearing cap 3 and end cap 1, mechanical sealing assembly 2 by with bearing Lid 3 and end cap 1 closely cooperate seal bearing cap 3 and the intermediate openings of end cap 1.

Clutch shaft bearing 8 is threaded onto at the bottom of the chamber that the bottom of rotating shaft 4 is placed in stainless steel cask 91, institute The lower surface of the lower surface and rotating shaft 4 of stating clutch shaft bearing 8 is generally aligned in the same plane.

Further, as a kind of concrete can embodiment, clutch shaft bearing 8 is for rolling Bearing.

Second bearing 5 is threaded onto rotating shaft 4 top and is placed in the upper opening position of housing 9. Second bearing 5 is positioned at bearing cap 3 lower end, and with bearing cap 3 lower surface compact siro spinning technology.

The flange 51 that second bearing 5 upper end is provided with, the second bearing 5 is by described flange 51 It is installed on the aperture position on housing 9 top.

As it is shown on figure 3, second bearing 5 one end is provided with flange 51, the diameter of flange 51 The diameter of big second bearing main body 52.Flange 51 and the second bearing main body 52 define right angle, The square position of the second bearing 5 coordinates with the upper corner position of housing 9.

Further, as a kind of concrete embodiment, the lower section of flange 51 and shell Body 9 is provided with sealing gasket between top, can play phase attrition between sealing and anti-locking mechanism The effect damaged.

Mechanical sealing assembly 2 be sleeved in rotating shaft 4 and by with the closely cooperating of bearing cap 3 Effect seals up the intermediate openings position of bearing cap 3.Mechanical sealing assembly 2 is positioned at end cap 1 And the position between bearing cap 3.Bearing cap 3 hollow is in order to make rotating shaft 4 permissible Extend there through.

As shown in Figure 4, mechanical sealing assembly 2 includes being installed on rotating shaft 4 the most successively On first stationary ring the 25, first rotating ring 23, spring the 22, second rotating ring 24 and the second stationary ring 21。

First rotating ring 23 includes the first annulus 231 and the second annulus 232 integrally connected, the The diameter of one annulus 231 is less than the second annulus 232, and spring 22 is socketed in the first annulus 231 On, the second rotating ring 24 is oppositely arranged with the first rotating ring 23, the lower end socket of the second rotating ring 24 On the springs 22, the first rotating ring 23 and the second rotating ring 24 closely cooperate, the first rotating ring 23 The working interface that contact interface is mechanical sealing assembly 2 with the second rotating ring 24.First stationary ring 25 lower ends being positioned at mechanical sealing assembly 2, the second stationary ring 21 is positioned at mechanical sealing assembly Upper end.

The operation principle of mechanical sealing assembly 2 is as follows:

Mechanical sealing assembly 2 in normal operation, the first rotating ring 23 and the second rotating ring 24 get rid of moisture by rotary motion, maintain one between the first rotating ring 23 and the second rotating ring 24 The liquid film that layer is very thin, this tunic has hydrodynamic pressure and static pressure, plays lubrication with close The effect of envelope.

The existence of mechanical sealing assembly 2 can get rid of the rotating shaft 4 outlet in the middle part of bearing cap 3 The moisture at place, it is to avoid moisture enters inside submersible electric motor, it is to avoid submersible electric motor is by water The erosion divided, thus extend the service life of submersible electric motor.

Bearing cap 3 is circulus, and bearing cap 3 is provided with fixing post, described fixing post Offer screw, end cap 1 is provided with the through hole for accommodating described fixing post, bearing cap 3 and end cap 1 be bolted.

Further, as a kind of concrete embodiment, bearing cap 3 is tied for hollow The disk of structure, bearing cap 3 is provided with fixing post.

Further, as a kind of concrete embodiment, bearing cap 3 is provided with 4 fixing posts, 4 fixing posts are uniformly distributed along bearing cap 3 circumference.Offer in fixing post Screw.

End cap 1 is positioned at bearing cap 3 top, end cap 1 intermediate openings, and aperture position is as turning The exit position of axle 4, rotating shaft 4 afterwards can be with the pumping main body phase of water pump by end cap 1 Connecting, the pumping main body for water pump provides power.

Further, as a kind of concrete can embodiment, the corresponding bearing cap of end cap 1 The position of fixing of 3 is provided with through hole.

Further, as a kind of concrete can embodiment, described number of openings is 4 Individual.

Further, as a kind of concrete can embodiment, through hole is internally provided with spiral shell Stricture of vagina.End cap 1 and bearing cap 3 are bolted.

Further, as a kind of concrete can embodiment, bolt number is 4.

Further, as a kind of concrete can embodiment, end cap 1 is provided with out Drawing lines, goes out drawing lines and passes for the control cable of submersible electric motor.

Further, as a kind of concrete can embodiment, end cap sidewall be provided with into Oilhole, injects machinery oil from described fuel feed hole, and preferred machinery oil model is N7 and N10.

It should be noted that the housing 9 of the submersible electric motor of this utility model offer and bearing Lid 3 defines stainless steel cask 91, and stainless steel cask 91 defines oil-filled cavity, and rotor 6 soaks Stain is in described oil-filled chamber body, and the existence of oil can avoid rotor 6 to connect with moisture or air Touch, prevent rotor core to be etched, the service life of Extending Rotor 6.

The mounting process of the submersible electric motor that this utility model provides is as follows: (1) motor turns Son 6 is sleeved on motor rotary shaft 4, and motor stator is sleeved on stainless steel cylinder 91, no Rust steel cylinder 91 is fixed with bearing cap 3, and both keep concentric；(2) clutch shaft bearing 8 loads not Rust steel drum 91 in, be set with rotor 6 motor rotary shaft 4 load stainless steel cask 91 In and stainless steel cask 91 is loaded in shell 93；(3) at stainless steel cask 91 and shell 93 Between resin by injection, form the second sleeve 92 after hardening of resin；(4) second bearings 5 are inserted in On motor rotary shaft 4；(5) mechanical sealing assembly 2 is sleeved on motor rotary shaft 4；(6) End cap 1 is connected fixing with bearing cap 3.

It is last it is noted that above example is only in order to illustrate technical side of the present utility model Case, is not intended to limit；Although this utility model having been carried out in detail with reference to foregoing embodiments Thin explanation, it will be understood by those within the art that: its still can to aforementioned respectively Technical scheme described in embodiment is modified, or to the most some or all of technology Feature carries out equivalent；And these amendments or replacement, do not make appropriate technical solution Essence departs from the scope of this utility model each embodiment technical scheme.

Claims

1. a submersible electric motor, it is characterised in that include housing, stator, rotor, turn Axle, bearing, mechanical sealing assembly, bearing cap and end cap；

Described enclosure interior be provided with the stainless steel cask for installing rotor, rotating shaft and bearing and For accommodating the cannelure of described stator, described stator is laterally installed in cannelure, described Rotor is installed in stainless steel cask；

Submersible electric motor the most according to claim 1, it is characterised in that described housing Including stainless steel cask, the second sleeve and shell；Described stainless steel cask is sleeved on described second set Cylinder is internal, and described second sleeve set is in described enclosure.

Submersible electric motor the most according to claim 2, it is characterised in that described second Sleeve be between stainless steel cask and shell by the cylindrical structure of resin-cast molding.

Submersible electric motor the most according to claim 3, it is characterised in that described second Sleeve inner is provided with cannelure, and described stator is connected in described cannelure.

Submersible electric motor the most according to claim 4, it is characterised in that described first Bearing is threaded onto at the bottom of the chamber that the bottom of described rotating shaft is placed in stainless steel cask, described second bearing It is threaded onto rotating shaft top and is placed in the upper opening position of described housing.

Submersible electric motor the most according to claim 5, it is characterised in that described second The flange that bearing upper end is provided with, described second bearing is installed on described housing by described flange The aperture position on top.

Submersible electric motor the most according to claim 6, it is characterised in that described machinery The first stationary ring that black box includes being installed on the most successively in described rotating shaft, first move Ring, spring, the second rotating ring and the second stationary ring.

Submersible electric motor the most according to claim 7, it is characterised in that described first Rotating ring includes the first annulus and the second annulus integrally connected, and the diameter of described first annulus is little In described second annulus, described spring housing is connected on described first annulus, described second rotating ring Being oppositely arranged with described first rotating ring, described spring housing is connected on the lower end of described second rotating ring, Described first rotating ring closely cooperates with described second rotating ring, and described first stationary ring is positioned at described machine The lower end of tool black box, described second stationary ring is positioned at the upper end of described mechanical sealing assembly.

Submersible electric motor the most according to claim 8, it is characterised in that described bearing Covering and be provided with fixing post, described fixing post offers screw, and described end cap is provided with use In the through hole of the described fixing post of receiving, described bearing cap and described end cap are bolted.

10. according to the arbitrary described submersible electric motor of claim 1～9, it is characterised in that The closed area that described bearing cap and described enclosure interior stainless steel cask surround is oil-filled cavity, Described rotor is immersed in described oil-filled inside cavity.