CN109167459A - High sealing submersible motor - Google Patents

Abstract

The present invention provides high sealing submersible motors, belong to submersible motor field, shell and shaft including coaxial arrangement, the both ends of shell are equipped with end cap, sand-throwing ring component is equipped between end cap and shaft, the inside of shell is equipped with rotor and stator, rotor is fixedly connected with shaft, the inner ring of stator is equipped with thrust component, thrust component and shaft are coaxially disposed, thrust component includes coaxial slide plate, thrust bearing and lower guide bearing, one end of slide plate contacts setting with the shoulder of shaft, slide plate is fixed by key and shaft, one end of thrust bearing contacts setting with slide plate, the other end contacts setting with lower guide bearing, one end solid lock of the lower guide bearing far from thrust bearing is on lower seam allowance circle, lower seam allowance circle is installed in the shell inner ring of submersible motor, the side of solid lock lower guide bearing and stator contact are not arranged lower seam allowance circle.Leakproofness of the present invention is high, and the subtle grains of sand can be effectively prevent to enter.

Description

High sealing submersible motor

Technical field

The invention belongs to submersible motor field, it is related to applying in the submersible motor of sewage treatment industry more particularly to highly dense Seal submersible motor.

Background technique

Submersible electric motor is applied in combination with pump, or directly loads onto pump part by submersible electric motor axle stretch end and form pump unification Product.It slips into mine water or rivers, lake, works in ocean water and in other occasion water, there is small in size, weight Gently, prestart be not required to diversion, do not limited by suction, do not need separately to set pump house, easy to install and use, reliable performance, efficiency it is higher, It is cheap, can investment reduction the advantages that, be widely used in fetching water from underground or rivers, lake, agricultural irrigation, city supply Water, industrial and mining enterprises' draining, urban and rural buildings draining, resident living water, city or plant effuent filth disposal etc. are applied at present Often there is the problems such as poor sealing or unstable internal pressure in high sealing submersible motor, high failure rate, maintenance and repair not side Just, cause performance poor, overall cost is high.

Summary of the invention

The problem to be solved in the present invention is to provide a kind of high sealing submersible motors, and structure is simple, easy to adjust, sealing performance It is good, it can prevent the subtle grains of sand in water from entering in core motor, promote the security performance of whole device, prolong the service life.

In order to achieve the above objectives, it the technical scheme of the present invention is realized as follows: high sealing submersible motor, including coaxially sets The both ends of the shell and shaft set, the shell are equipped with end cap, and sand-throwing ring component, the shell are equipped between the end cap and shaft The inside of body is equipped with rotor and stator, and the rotor is fixedly connected with the shaft, and the inner ring of the stator is equipped with thrust component, The thrust component and the shaft are coaxially disposed；

The sand-throwing ring component includes sealing ring, seal receptacle and the gasket of coaxial arrangement, and the gasket is embedded latent It is arranged on the end cap of hydroelectric machine and with end cap solid lock, the seal receptacle is located at side of the gasket far from the end cap, institute It states sealing ring and is located at side of the seal receptacle far from the gasket, the sealing ring includes seal section and cooperates section, described Seal section is bonded setting with the shaft of submersible motor, and the cooperation section is located at close to one end of the seal receptacle, the seal receptacle For T-type and one end be located at it is described cooperation section inner ring and be in contact with it setting, the other end extend outwardly setting cover be located at it is described close On packing, the seal receptacle and the gasket one lead to solid lock on the end cap；

The thrust component includes coaxial slide plate, thrust bearing and lower guide bearing, one end of the slide plate and shaft Shoulder contact setting, the slide plate are fixed by key and shaft, and one end of the thrust bearing contacts setting with the slide plate, separately One end contacts setting with lower guide bearing, and one end solid lock of the lower guide bearing far from the thrust bearing is on lower seam allowance circle, institute State the shell inner ring that lower seam allowance circle is installed in submersible motor, the lower seam allowance circle not the side of lower guide bearing described in solid lock with it is described Stator contact setting.

Further, the seal section includes the first fitting section, changeover portion and the second fitting section for setting gradually and connecting, The first fitting section and the second fitting section correspond to the different-diameter position of the shaft, and the changeover portion corresponds to the shaft It is arranged at chamfering.

Further, the shaft is connect by shaft coupling with external driving device.

Further, the sealing ring is located between shaft coupling and seal receptacle, the end of the sealing ring and the shaft coupling Face contact setting, the sealing ring is equipped with an outside chamfering of keeping away close to one end of the shaft coupling, described to keep away the interior of a chamfering Portion is not contacted with the shaft.

Further, the shaft is connect by shaft coupling with external driving device.

Further, the gasket is embedded in the end cap for one end of T-type and microcephaly.

Further, the thickness of the cooperation section is greater than the thickness of the seal section.

Further, the sealing ring is integrally formed by rubber material.

Further, the end cap is equipped with outwardly directed jump lead, between the jump lead and the end cap Equipped with sealing ring.

Further, the lower guide bearing by stud solid lock on the lower seam allowance circle, the lower seam allowance circle with The inner ring of the shell is welded as a whole.

Further, the rotor is equipped with balance ring close to one end of the stator, and the balance ring is located at the stator Inner ring and with the fiducial axis be coaxially disposed.

Further, the balance ring is cast iron quality and is integrated with the shaft hot-cast.

Further, the outer diameter of the balance ring is equal to the outer diameter of the slide plate.

Further, the maximum outside diameter of the lower guide bearing is equal with the outer diameter of the thrust bearing, the thrust bearing Outer diameter be greater than the slide plate outer diameter.

Further, the shell and lower seam allowance circle are process by stainless steel material.

Compared with prior art, the advantages and positive effects of the present invention are: the 1, present invention sets gradually sealing ring, close Seat and gasket are sealed, the sealing of shaft output end and the sealing of end cap junction are realized, gasket is embedded in end cap, sealing Seat is embedded in the cooperation section of sealing ring, while seal receptacle and gasket pass through solid lock in end seat, are arranged layer by layer, effectively prevent The subtle grains of sand in water enter in core motor, promote the security performance of whole device, prolong the service life；2, the first patch It closes section and the second fitting section corresponds to the different-diameter position of shaft, changeover portion corresponds to be arranged at the chamfering of shaft, according to shaft Shape is set, and guarantees fitting closely for each stage, lift-off seal performance；3, setting keep away a chamfering it is latter be can avoid with Screw thread directly contacts generation abrasion, second is that keeping away a chamfering can avoid generating vacuum in shaft coupling installation process, guarantees the suitable of installation Benefit carries out；4, slide plate, thrust bearing and lower guide bearing are arranged to the inner ring of stator, stopping for two ends of rotor will be set originally Selection structure is changed to the inner ring of stator, so that the length of shaft greatly shortens, thrust structure no longer occupies the length of submersible motor, Overall structure can shorten, and structure is more compact, assemble more convenient, cost reduction, and length is longer before shaft, processing Higher cost, using postponing in this thrust structure, the length of shaft can be greatly shortened, and reduce processing cost；5, setting is flat It weighs after ring, can further promote the balance quality of rotor, the lower generation rotary inertia that avoids running at high speed is big, guarantees to run at high speed Stability；6, shell and lower seam allowance circle are process by stainless steel material, not oxidizable, and intensity is high.

Detailed description of the invention

The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of sand-throwing ring component of the present invention；

Fig. 2 is the structural schematic diagram of sealing ring of the present invention；

Fig. 3 is the structural schematic diagram of sealing ring thrust component real use state of the present invention.

Appended drawing reference:

1- shaft coupling；2- shaft；3- sealing ring；31- seal section；32- cooperates section；33- first is bonded section；34- changeover portion； 35- second is bonded section；36- keeps away a chamfering；4- seal receptacle；5- gasket；6- end cap；7- leader cable；71- sealing ring；81- turns Son；82- stator；83- slide plate；84- key；85- thrust bearing；Guide bearing under 86-；Seam allowance circle under 87-；88- balance ring；89- Shell.

Specific embodiment

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " It is meant that two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.

Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As depicted in figs. 1 and 2, the present invention is high sealing submersible motor, shell 89 and shaft 2 including coaxial arrangement, shell The both ends of body 89 are equipped with end cap 6, and sand-throwing ring component is equipped between end cap 6 and shaft 2, and the inside of shell 6 is equipped with rotor 82 and determines Son 83, rotor 82 is fixedly connected with shaft 2, and the inner ring of stator 83 is equipped with thrust component, and thrust component and shaft 2 are coaxially disposed.

Sand-throwing ring component includes sealing ring 3, seal receptacle 4 and the gasket 5 of coaxial arrangement, and gasket 5 is embedded in diving electricity It is arranged on the end cap 6 of machine and with 6 solid lock of end cap, seal receptacle 4 is located at side of the gasket 5 far from end cap 6, and sealing ring 3 is located at close Side of the seat 4 far from gasket 5 is sealed, sealing ring 3 includes seal section 31 and cooperation section 32, the shaft of seal section 31 and submersible motor 2 fitting settings, cooperation section 32 are located at close to one end of seal receptacle 4, and seal receptacle 4 is the inner ring that T-type and one end are located at cooperation section 32 And it is in contact with it setting, the other end, which extends outwardly to be arranged to cover, to be located on gasket 5, and seal receptacle 4 is being held with the logical solid lock of gasket 5 one On lid 6.

Preferably, seal section 31 includes the first fitting section 33, changeover portion 34 and the second fitting section for setting gradually and connecting 335, the different-diameter position of the first fitting section 33 and the second corresponding shaft 2 of fitting section 335, the corresponding shaft 2 of changeover portion 34 is fallen It is arranged at angle, is set according to the shape of shaft 2, guarantee fitting closely for each stage, lift-off seal performance.

Preferably, shaft 2 is connect by shaft coupling 1 with external driving device, can drive different rule after shaft coupling 1 is arranged The product of lattice connects more convenient；It is highly preferred that sealing ring 3 is located between shaft coupling 1 and seal receptacle 4, sealing ring 3 with The end face of shaft coupling 1 contacts setting, realizes the whole of 2 output par, c of shaft and seals, lift-off seal performance, and sealing ring 3 is close A chamfering 36 is kept away equipped with outside in one end of shaft coupling 1, and the inside for keeping away a chamfering 36 is not contacted with shaft 2, because of shaft 2 and shaft coupling It is mostly screw thread at 1 cooperation of device, it is that can avoid directly contacting generation abrasion with screw thread that it is latter, which to keep away a chamfering 36, for setting, is fallen second is that keeping away position Angle 36 can avoid generating vacuum in 1 installation process of shaft coupling, guarantee going on smoothly for installation.

Preferably, gasket 5 is embedded in end cap 6 for one end of T-type and microcephaly, using the structure being embedded, can effectively be prevented Sealing adverse current enters, lift-off seal performance.

Preferably, cooperate the thickness of section 32 to be greater than the thickness of seal section 31, the inner ring of section 32 and seal receptacle 4 is cooperated to match splice grafting Touching setting, guarantees the intensity of cooperation section 32, avoids cooperation stress deformation.

Preferably, sealing ring 3 is integrally formed by rubber material, and wearability is good, anti-oxidant, long service life.

Preferably, end cap 6 is equipped with outwardly directed jump lead 7, guarantees the connection with external power supply, meets rotation Demand, sealing ring 71 is equipped between jump lead 7 and end cap 6 ensure that the performance that jump lead 7 is tightly connected, and prevent grey trifle in the world Matter enters the inside of submersible motor from there, promotes the leakproofness of entire submersible motor.

Thrust component includes the rotor 81 and stator 82 relatively rotated, and rotor 81 is fixed in shaft 2, the inner ring of stator 82 Equipped with coaxial slide plate 83, thrust bearing 85 and lower guide bearing 86, one end of slide plate 83 contacts setting with the shoulder of shaft 2, sliding Plate 83 is fixed by key 84 and shaft 2, and one end of thrust bearing 85 contacts setting with slide plate 83, and the other end connects with lower guide bearing 86 Touching setting, for one end solid lock of the lower guide bearing 86 far from thrust bearing 85 on lower seam allowance circle 87, lower seam allowance circle 87 is installed in diving 89 inner ring of shell of motor, the side of solid lock lower guide bearing 86 does not contact setting, lower guide bearing 86 with stator 82 to lower seam allowance circle 87 It is primarily subjected to 81 mechanical imbalance power of rotor and the unilateral magnetic force due to caused by 81 bias of rotor, main function is to prevent The swing of shaft 2 is used cooperatively with thrust bearing 85, compact-sized.

Preferably, lower guide bearing 86 is through stud solid lock on lower seam allowance circle 87, and detachable connection, assembly is more Fast, the inner ring of lower seam allowance circle 87 and shell 89 is welded as a whole, and intensity is high, reduces the quantity of Assembly part, promotes assembling effect Rate.

Preferably, rotor 81 close to one end of stator 82 be equipped with balance ring 88, balance ring 88 be located at the inner ring of stator 82 and It is coaxially disposed with fiducial axis, after balance ring 88 is set, can further promote the balance quality of rotor 81, avoid the lower generation that runs at high speed Rotary inertia is big, guarantees the stability to run at high speed；It is highly preferred that balance ring 88 is cast iron quality and is one with 2 hot-cast of shaft Body, cast iron quality is at low cost, is integrated with 2 hot-cast of shaft, reduces the quantity of part, promotes packaging efficiency.

Preferably, the outer diameter of balance ring 88 is equal to the outer diameter of slide plate 83, and excessive generate with stator 82 is avoided to interfere；More preferably The maximum outside diameter on ground, lower guide bearing 86 is equal with the outer diameter of thrust bearing 85 and the consistency of thickness of the two, is conducive to lower guide bearing 86 pairs of 85 uniform applications of thrust bearing, so that fixation is more stable, the inner ring of thrust bearing 85 is not contacted with shaft 2, thrust shaft Hold 85 outer diameter be greater than slide plate 83 outer diameter.

Preferably, shell 89 and lower seam allowance circle 87 are process by stainless steel material, not oxidizable, and intensity is high.

In the actual use process, sealing ring 3 is closely fitted in shaft 2, and one end is bonded with shaft coupling 1, separately The inside of one end and seal receptacle 4 cooperate, and seal receptacle 4 and the logical solid lock of gasket 5 one are on end cap 6, and total is by the company of shaft 2 Socket part is all isolated with external, is realized the sealing to shaft 2, can be prevented the subtle grains of sand in water from entering in core motor, The security performance of whole device is promoted, structure is simple, and easy to adjust, good seal performance prolongs the service life, and is increasing sand-throwing ring Thrust structure is changed on the basis of component, will be located at originally in shaft 2, and stator 82 is arranged in the thrust structure at 81 both ends of rotor Slide plate 83, thrust bearing 85 and lower guide bearing 86, are arranged at the inner ring of stator 82 by inside, and balance ring 88 is also disposed at stator 82 inner ring, substantially reduces the length of shaft 2, and then shortens the length of entire submersible motor, reduces the processing of shaft 2 Cost, so that structure is more compact, the specification of corresponding other parts also reduces, and reduces the overall cost of submersible motor, whole It is a simple and compact for structure, it assembles more efficient and convenient.

One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range Deng should still be within the scope of the patent of the present invention.

Claims (10)

1. high sealing submersible motor, it is characterised in that: shell and shaft including coaxial arrangement, the shell

Both ends are equipped with end cap, and sand-throwing ring component is equipped between the end cap and shaft, and the inside of the shell is equipped with rotor and determines Son, the rotor are fixedly connected with the shaft, and the inner ring of the stator is equipped with thrust component, the thrust component with described turn Axis coaxial arrangement；

The sand-throwing ring component includes sealing ring, seal receptacle and the gasket of coaxial arrangement, and the gasket is embedded in diving electricity It is arranged on the end cap of machine and with end cap solid lock, the seal receptacle is located at side of the gasket far from the end cap, institute It states sealing ring and is located at side of the seal receptacle far from the gasket, the sealing ring includes seal section and cooperates section, described Seal section is bonded setting with the shaft of submersible motor, and the cooperation section is located at close to one end of the seal receptacle, the seal receptacle For T-type and one end be located at it is described cooperation section inner ring and be in contact with it setting, the other end extend outwardly setting cover be located at it is described close On packing, the seal receptacle and the gasket one lead to solid lock on the end cap；

The thrust component includes coaxial slide plate, thrust bearing and lower guide bearing, one end of the slide plate and the shoulder of shaft Contact setting, the slide plate are fixed by key and shaft, and one end of the thrust bearing contacts setting, the other end with the slide plate Setting is contacted with lower guide bearing, one end solid lock of the lower guide bearing far from the thrust bearing is on lower seam allowance circle, under described Seam allowance circle is installed in the shell inner ring of submersible motor, the lower seam allowance the circle not side of lower guide bearing described in solid lock and the stator Contact setting.

2. high sealing submersible motor according to claim 1, it is characterised in that: the seal section includes setting gradually and connecting The first fitting section, changeover portion and the second fitting section connect, the first fitting section and the second fitting section correspond to the shaft not Same diametrical position, the changeover portion corresponds to be arranged at the chamfering of the shaft.

3. high sealing submersible motor according to claim 2, it is characterised in that: the shaft passes through shaft coupling and outside Driving device connection.

4. high sealing submersible motor according to claim 3, it is characterised in that: the sealing ring is located at shaft coupling and sealing Between seat, the sealing ring contacts setting with the end face of the shaft coupling, and the sealing ring is set close to one end of the shaft coupling There is an outside chamfering of keeping away, the inside for keeping away a chamfering is not contacted with the shaft.

5. high sealing submersible motor according to claim 1, it is characterised in that: the gasket is the one of T-type and microcephaly End is embedded in the end cap, and the sealing ring is integrally formed by rubber material.

6. high sealing submersible motor according to claim 1, it is characterised in that: the thickness of the cooperation section is greater than described close Seal the thickness of section.

7. high sealing submersible motor according to claim 1, it is characterised in that: the end cap is equipped with outwardly directed draw Cable is connect, sealing ring is equipped between the jump lead and the end cap.

8. high sealing submersible motor according to claim 1, it is characterised in that: the lower guide bearing is solid by stud On the lower seam allowance circle, the inner ring of the lower seam allowance circle and the shell is welded as a whole lock.

9. high sealing submersible motor according to claim 1, it is characterised in that: the rotor is close to one end of the stator Equipped with balance ring, the balance ring is located at the inner ring of the stator and is coaxially disposed with the fiducial axis, and the balance ring is cast iron It material and is integrated with the shaft hot-cast.

10. high sealing submersible motor according to claim 1, it is characterised in that: the shell and lower seam allowance circle are by stainless Steel material is process.