CN208142977U - A kind of sealing structure of shaft end of dry-type submersible motor - Google Patents
A kind of sealing structure of shaft end of dry-type submersible motor Download PDFInfo
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- CN208142977U CN208142977U CN201820412445.4U CN201820412445U CN208142977U CN 208142977 U CN208142977 U CN 208142977U CN 201820412445 U CN201820412445 U CN 201820412445U CN 208142977 U CN208142977 U CN 208142977U
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- capsul
- shell
- rotor
- ring
- lantern ring
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Abstract
The utility model discloses a kind of sealing structure of shaft end of dry-type submersible motor, which includes shell, rotor and capsul, and the capsul forms grease chamber together with shell seamless welding between capsul and shell, rotor passes through shell and capsul；Mechanically-sealing apparatus is socketed on the rotor, rotor is connect by lantern ring with housing into rotation；Lantern ring is bolted on shell and capsul；Isolating cylinder is fixed in the capsul, one end of isolating cylinder is fixedly mounted on capsul, and several air bags are provided in the gap between isolating cylinder and capsul.The setting that the utility model passes through grease chamber, mechanically-sealing apparatus can be stopped outside, prevent environmental liquids from entering inside motor, make to keep drying in motor, during working at the same time, machine oil can penetrate at the contact surface of lantern ring and rotor, reduce the friction between lantern ring and rotor, to reduce the abrasion of energy consumption of electrical machinery Yu interference ring.
Description
Technical field
The utility model belongs to the sealing structure technology of motor, specifically, the shaft end for being related to a kind of dry-type submersible motor is close
Seal structure.
Background technique
For submersible motor often as the power section of immersible pump, structure, which designs, so that submersible motor is completely immersed in water
It works, in order to guarantee that submersible motor safe under liquid can work, it is necessary to guarantee liquid during the work time
It will not enter in motor, it is therefore desirable to the spindle portion of motor is sealed, to can normally be operated in guarantee motor
While be not in lead to motor damage into water.
Mainly the spindle portion of motor is sealed by rotating ring, stationary ring mechanical seal structure in the prior art,
Stationary ring is fixed on motor case, rotating ring is socketed in shaft, is then close together rotation by rotating ring and stationary ring
Realize waterproof, but rotating ring and stationary ring be due to being close together, when work due to the two together rubs mutually generate it is a large amount of
Heat, the generation of one side amount of heat are easily damaged shaft, and on the other hand, high temperature when work is easy to cause stator and rotor
Deformation occurs, causes not fitting closely between stator and rotor, to influence the waterproof performance of sealing structure, causes to dive under water
The Acceptable life of motor reduces, and in order to solve this problem, the utility model provides following technical scheme.
Summary of the invention
The purpose of this utility model is to provide a kind of sealing structure of shaft end of dry-type submersible motor.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of sealing structure of shaft end of dry-type submersible motor, including shell, rotor and capsul, the capsul and shell
Seamless welding together, forms grease chamber between capsul and shell, rotor passes through shell and capsul；
Mechanically-sealing apparatus is socketed on the rotor, rotor is connect by lantern ring with housing into rotation；
The lantern ring includes clamping rings and sealing ring, and screw hole is provided on clamping rings, interference ring is equipped in sealing ring,
Lantern ring is bolted on shell and opens on first annular slot；
Isolating cylinder is fixed in the capsul, one end of isolating cylinder is fixedly mounted on capsul, isolating cylinder and sealing
It is provided with several air bags in gap between shell, there are a fixed gap between the other end and shell of isolating cylinder, is opened on capsul
There is fuel feed hole；
Rotor is connect by lantern ring with housing into rotation, and lantern ring is mounted by means of bolts on the second annular that capsul is opened
On slot.
As the further scheme of the utility model, organic oil is filled in the grease chamber.
Connecting sewing as the further scheme of the utility model, between the lantern ring and shell and lantern ring and capsul
Gap passes through welded seal.
As the further scheme of the utility model, the clamping rings is together with bolt welding.
As the further scheme of the utility model, the thickness of the clamping rings and first annular slot and the second annular groove
Deep equality.
As the further scheme of the utility model, the interference ring is all made of polar rubber with air bag and is made.
As the further scheme of the utility model, the internal diameter of the interference ring is less than the diameter of rotor, interference ring with turn
Sub- interference connection.
As the further scheme of the utility model, the height of the sealing ring is greater than the thickness of capsul.
The beneficial effects of the utility model：A kind of sealing structure of shaft end of dry-type submersible motor described in the utility model,
By the setting of grease chamber, mechanically-sealing apparatus can be stopped outside, prevent environmental liquids from entering inside motor, make to protect in motor
Drying is held, during working at the same time, machine oil can be penetrated at the contact surface of lantern ring and rotor, be reduced between lantern ring and rotor
Friction, to reduce the abrasion of energy consumption of electrical machinery Yu interference ring.
Detailed description of the invention
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of lantern ring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It is a kind of sealing structure of shaft end of dry-type submersible motor shown in Fig. 1, since the sealing structure is mainly in machine shaft
Shaft end, therefore Fig. 1 is described the shaft end of machine shaft and its near zone, as shown in Figure 1, a kind of dry diving
The sealing structure of shaft end of motor, including shell 1, rotor 2 and capsul 4, the capsul 4 together with 1 seamless welding of shell,
Grease chamber 42 is formed between capsul 4 and shell 1, organic oil is filled in grease chamber 42, and rotor 2 passes through shell 1 and capsul 4.
Mechanically-sealing apparatus 3 is socketed on the rotor 2, one end of mechanically-sealing apparatus is fixed on shell 1, the machine
Tool sealing device 3 is sealed using common mechanically-sealing apparatus on existing market, such as rotating ring, stationary ring, i.e., is socketed in rotating ring and turns
On son 2, stationary ring is fixedly mounted on shell 1, and rotating ring is close to stationary ring rotation, can achieve waterproof effect, but due to mechanical close
The case where sealing effect of seal structure is limited, just will appear leak after certain working time, therefore also need further
Seal approach, rotor 2 is rotatablely connected by lantern ring 5 and shell 1；
As shown in Fig. 2, the lantern ring 5 includes clamping rings 52 and sealing ring 54, it is provided with screw hole 53 on clamping rings 52, it is close
Seamless in seal ring 54 to be equipped with several interference rings 55, lantern ring 5 is fixed on shell 1 by bolt 51 and opens on first annular slot 11,
Bolt 52 welds together with clamping rings 52, then will be welded at the connection gap of shell 1 and lantern ring 5 by welding, and makes shell 1
With the junction of lantern ring 5 will not leakage, the deep equality of the thickness of clamping rings 52 and first annular slot 11, lantern ring 5 is in fixation
Afterwards, in the same plane, the interference ring 55 is connect with 2 interference of rotor for the upper surface of clamping rings 52 and shell inner surface.I.e.
The internal diameter of interference ring 55 is less than the diameter of rotor 2, and interference ring 55 is made of polar rubber, and polar rubber has good oil resistant
Property, it prevents during prolonged use, corrosion of the interference ring 55 by the machine oil filled in grease chamber 42.
Isolating cylinder 6 is fixed in the capsul 4, one end of isolating cylinder 6 is fixedly mounted on capsul 4, isolating cylinder 6 with
Several air bags 7 are provided in gap between capsul 4, air bag 7 is made of polar rubber, the other end and shell of isolating cylinder 6
There are a fixed gaps between body 1, and entire grease chamber 42 is made to become the entirety of a connection, during the work time due to motor, rotor 2
It rubs with the machine oil filled in grease chamber 42, causes the temperature of machine oil that can increase, so as to cause the machine oil body in grease chamber 42
Certain change can also occur for product, and the setting of air bag 7 can guarantee that larger fluctuation, capsul 4 will not occur for pressure in grease chamber 42
On be also provided with fuel feed hole 43.
Rotor 2 is rotatablely connected by lantern ring 5 and shell 1, and rotor 2 is connect with 55 interference of interference ring in lantern ring 5, lantern ring 5
It is fixedly mounted on by bolt 51 on the second annular groove 41 that capsul 4 is opened, and the junction gap of lantern ring 5 and capsul 4
By welded seal, the thickness of clamping rings 52 is equal with the thickness of the second annular groove 41, and the height of the sealing ring 54 is greater than
The thickness of capsul 4, the machine oil in such grease chamber 42 will not be excessive due to external pressure and enter outside capsul 4, to motor
Inside impact.
A kind of shaft end seal method of dry-type submersible motor, includes the following steps：
Lantern ring 5 is fixedly mounted on capsul 4 and shell 1 by bolt, by being welded lantern ring 5 and capsul 4
With the gap sealing of the junction of shell 1, while by welding bolt 51 and lantern ring 5 are welded together, then according to Fig. 1 institute
Show structure installation assembly sealing structure；
Subzero engine oil is injected in grease chamber 42 by fuel feed hole 43, machine oil is full of in grease chamber 42, without air, due to machine oil
Type is more, therefore the actual temp of injected machine oil is determined according to the low temperature flow of this kind of machine oil；
Gelatinous sodium silicate aqueous solution is slowly injected into fuel feed hole 43, until sodium silicate aqueous solution is filled up completely oil inlet
The air in fuel feed hole 43 can be discharged in hole 43 in this way, the convex portion of gel is cut with knife, then weld oil inlet by metal
Hole 43 seals；
Gas is injected into shell 1, keeps the air pressure in shell 1 equal with the hydraulic pressure for the depth that motor to be slipped into, completely
Sealing structure complete.
Structure in a kind of shaft end seal of dry-type submersible motor described in the utility model, at work, due to grease chamber 42
Not less than outside pressure, (with machine oil friction can occur for rotor 2 when motor works causes oil temperature to be promoted to interior pressure, the body of machine oil
Certain increase can also occur for product, be promoted so as to cause pressure in grease chamber), and the density of machine oil is less than the density of water, therefore logical
The a small amount of water for crossing the infiltration of mechanically-sealing apparatus 3 will not enter in grease chamber 42, therefore drying is also able to maintain in motor, work at the same time
In the process, machine oil can penetrate at the contact surface of lantern ring 5 and rotor 2, the friction between lantern ring 5 and rotor 2 be reduced, to drop
The low abrasion of energy consumption of electrical machinery and interference ring 55.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, does not limit the invention to the specific embodiments described.Obviously, according to this specification
Content, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, be in order to preferably explain
The principles of the present invention and practical application, so that skilled artisan be enable to better understand and utilize this practical
It is novel.The utility model is limited only by the claims and their full scope and equivalents.
Claims (7)
1. a kind of sealing structure of shaft end of dry-type submersible motor, which is characterized in that including shell (1), rotor (2) and capsul
(4), the capsul (4) forms grease chamber (42) between capsul (4) and shell (1) together with shell (1) seamless welding,
Rotor (2) passes through shell (1) and capsul (4)；
It is socketed with mechanically-sealing apparatus (3) on the rotor (2), rotor (2) is rotatablely connected by lantern ring (5) and shell (1)；
The lantern ring (5) includes clamping rings (52) and sealing ring (54), and screw hole (53), sealing ring are provided on clamping rings (52)
(54) it is equipped with interference ring (55) in, lantern ring (5) is fixed on shell (1) by bolt (51) and opens on first annular slot (11)；
It is fixed with isolating cylinder (6) in the capsul (4), one end of isolating cylinder (6) is fixedly mounted on capsul (4), isolation
Cylinder (6) and capsul (4) between gap in be provided with air bag (7), between the other end and shell (1) of isolating cylinder (6) there are
Gap is provided with fuel feed hole (43) on capsul (4)；
The rotor (2) is rotatablely connected by lantern ring (5) and shell (1), and lantern ring (5) is fixedly mounted on sealing by bolt (51)
On the second annular groove (41) that shell (4) is opened.
2. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the grease chamber
(42) organic oil is filled in.
3. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the lantern ring
(5) connection gap between shell (1) and lantern ring (5) and capsul (4) passes through welded seal.
4. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the fixed circle
Ring (52) welds together with bolt (51).
5. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the fixed circle
The thickness of ring (52) and the deep equality of first annular slot (11) and the second annular groove (41).
6. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the interference ring
(55) internal diameter is less than the diameter of rotor (2), and interference ring (55) is connect with rotor (2) interference.
7. a kind of sealing structure of shaft end of dry-type submersible motor according to claim 1, which is characterized in that the sealing ring
(54) height is greater than the thickness of capsul (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820412445.4U CN208142977U (en) | 2018-03-26 | 2018-03-26 | A kind of sealing structure of shaft end of dry-type submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820412445.4U CN208142977U (en) | 2018-03-26 | 2018-03-26 | A kind of sealing structure of shaft end of dry-type submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208142977U true CN208142977U (en) | 2018-11-23 |
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ID=64290449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820412445.4U Active CN208142977U (en) | 2018-03-26 | 2018-03-26 | A kind of sealing structure of shaft end of dry-type submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208142977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
| CN114922909A (en) * | 2022-03-29 | 2022-08-19 | 宁波万丰轴承有限公司 | Low-speed waterproof bearing |
-
2018
- 2018-03-26 CN CN201820412445.4U patent/CN208142977U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
| CN114922909A (en) * | 2022-03-29 | 2022-08-19 | 宁波万丰轴承有限公司 | Low-speed waterproof bearing |
| CN114922909B (en) * | 2022-03-29 | 2023-08-18 | 宁波万丰轴承有限公司 | Low-speed waterproof bearing |
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