CN108347147A - A kind of etch-proof brush direct current motor and flow-meter - Google Patents
A kind of etch-proof brush direct current motor and flow-meter Download PDFInfo
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- CN108347147A CN108347147A CN201810139683.7A CN201810139683A CN108347147A CN 108347147 A CN108347147 A CN 108347147A CN 201810139683 A CN201810139683 A CN 201810139683A CN 108347147 A CN108347147 A CN 108347147A
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- bearing
- direct current
- brush
- current motor
- etch
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- 238000000576 coating method Methods 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 230000003628 erosive effect Effects 0.000 claims abstract description 17
- 238000007747 plating Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 13
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 12
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 29
- 229910052709 silver Inorganic materials 0.000 claims description 29
- 239000004332 silver Substances 0.000 claims description 29
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 26
- 229910052737 gold Inorganic materials 0.000 claims description 26
- 239000010931 gold Substances 0.000 claims description 26
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 16
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 16
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 14
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 claims description 14
- 239000010956 nickel silver Substances 0.000 claims description 14
- 238000009713 electroplating Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000010687 lubricating oil Substances 0.000 claims description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 238000007744 chromate conversion coating Methods 0.000 claims description 4
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- 238000001962 electrophoresis Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 235000014692 zinc oxide Nutrition 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 240000006409 Acacia auriculiformis Species 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000002421 anti-septic effect Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 25
- 238000005260 corrosion Methods 0.000 description 25
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910000537 White brass Inorganic materials 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Motor Or Generator Current Collectors (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of etch-proof brush direct current motors, solves the technical problem of brush direct current motor antiseptic property difference in the prior art, etch-proof brush direct current motor in the present invention, including stator module, rotor assembly and supports end cap component, the rotor assembly includes armature core and commutator, the stator module includes casing, first bearing on casing and magnet ring, the supports end cap component includes end cap, second bearing on end cap and brush, the first bearing and second bearing are stainless steel powder metallurgical bearing, the commutator includes the erosion resistant coating of anaerobic Copper base material and plating on the oxygen-free copper substrate outer surface, the brush is using packfong as the palldium alloy brush of base material, the surface of the armature core, the surface of casing and the surface of end cap are equipped with corrosion prevention film.In addition, the invention also discloses a kind of flow-meters using above-mentioned brush direct current motor.
Description
【Technical field】
The present invention relates to flow-meter technical field more particularly to a kind of etch-proof brush direct current motors and flow
Measuring instrument.
【Background technology】
With the improvement of people ' s living standards and universal, safety of the people to flow-meter of flow-meter
Property, reliability, maintenance-free propose requirements at the higher level.Flow-meter includes that shell and installation are used to control inside housings
The motor valve of gas liquid break-make is fired, motor valve includes the brush direct current motor for providing power source, when flow-meter works,
Combustion gas can be generated with brush direct current motor and be contacted.From in recent years, from the point of view of measuring instrument failure statistics data, lost caused by motor valve
Effect ranks forefront three, and 90% or more the failure of motor valve is caused by being corroded due to motor.Therefore, the corrosion resistance of motor and electricity
The reliability of machine valve is closely related, also contribute to people in daily life with gas safety.
Motor failure is mainly shown as three kinds：One, the ingredients such as steam, hydrogen sulfide in armature core and combustion gas
It learns reaction and generates corrosion, corrosive deposit is filled into the gap of armature core and magnet ring, and the rotor assembly of motor is caused to hinder
Power increases, and when rotor assembly resistance increases to the staring torque limit, then motor will be stuck, and can not normally start.Two, axis
It holds and uses copper-base powder metallurgy, the chemism of copper based powder metallurgy material is stronger, hydrogen sulfide and aqueous vapor can be total in combustion gas
Corrosion is generated under same-action, causes the output shaft of rotor and bearing that locking occurs；Three, commutator mostly uses copper plating, edge silver or straight
It connects using copper sheet as production material, resistance to corrosion is poor, and commutator sliding contact surface easily corrodes, and less serious case increases after corrosion
Contact resistance between commutator and brush causes the generation for closing the not tight phenomenon of valve, serious appearance open circuit phenomenon to lead to motor
Valve is unable to normal switch valve, and four, brush directly uses packfong to make, or inlay silver-colored conjunction in contact part of the brush with commutator
Gold, packfong can generate an oxidation film on its surface with after hydrogen sulfide Long Term Contact, increase between brush and commutator
Contact resistance, silver alloy can reduce the contact resistance between brush and commutator, but it can be produced with after contact with hydrogen sulfide
The nonconducting silver sulfide of black leads to the generation at motor open circuit scene.It follows that motor corrosion resistance in the prior art compared with
Difference easily causes the failure of motor, although in the prior art, part of the manufacturer protects motor, for example, by using complete
Sealing means.But in actual use, effect is not obvious, and different degrees of corrosion still occurs in motor.
【Invention content】
A kind of etch-proof direct current is provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art
Brush motor can effectively improve the corrosion resistance of brush direct current motor, extend the service life of brush direct current motor.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of etch-proof brush direct current motor, including stator module, rotor assembly and supports end cap component, the rotor
Component includes armature core and commutator, and the stator module includes casing, the first bearing on casing and magnet ring, institute
It includes end cap, the second bearing on end cap and brush to state supports end cap component, and the first bearing and second bearing are equal
For stainless steel powder metallurgical bearing, the commutator includes anaerobic Copper base material and plating on the oxygen-free copper substrate outer surface
Erosion resistant coating, the brush are the surface of the armature core, the surface of casing and end using packfong as the palldium alloy brush of base material
The surface of lid is equipped with corrosion prevention film.
Further, the erosion resistant coating includes silver-bearing copper nickel alloy coating, gold and silver coating and gold plate, the silver-bearing copper nickel alloy
Coating plating on the surface of the anaerobic Copper base material, the gold and silver coating plating the silver-bearing copper nickel alloy coating and gold plate it
Between.
Further, it is ferritic stainless steel powder metallurgical that the first bearing and second bearing, which are all made of metallographic structure,
Bearing.
Further, lubrication is marked with by high-pressure injection technique in the hole of the first bearing and second bearing
Oil.
Further, the armature core is made of multiple silicon steel sheets from tinertoy.
Further, the brush includes that nickel silver alloy matrix and the palladium being entrenched on the nickel silver alloy matrix close
Golden fitting portion, the palldium alloy mating position is between the nickel silver alloy matrix and the contact site of commutator.
Further, the corrosion prevention film is the zinc electroplating with iridescent yellow chromate conversion coating layer formed by electroplating technology or is coated by electrophoresis process
Resin layer.
Further, the magnet ring is ferrite Hard Magnetic ring.
The invention also discloses a kind of flow-meters, including the DC brush electricity described in any of the above-described technical solution
Machine.
Beneficial effects of the present invention：
First bearing and second bearing in brush direct current motor disclosed by the invention are stainless steel powder metallurgical bearing,
The chemism of stainless steel powder metallurgical bearing is weaker, is not susceptible to chemical attack, avoids bearing and locking occurs with output shaft；
Commutator includes the erosion resistant coating of anaerobic Copper base material and plating on oxygen-free copper substrate outer surface, and the selection of no oxygen layer base material can carry
The electroplating quality of high erosion resistant coating avoids anaerobic copper-based so that erosion resistant coating can play preferably protective effect to no oxygen layer base material
Material occurs corrosion and influences commutator normal operation；Brush is so to be designed using packfong as the palldium alloy brush of base material, can
The corrosion resistance of brush is improved, and the electric conductivity of brush can be improved；The surface of armature core, the surface of casing and end cap
Surface is equipped with corrosion prevention film, carries out effective protection to armature core, casing and end cap with this, avoids three because chemical attack occurs
And it is damaged.It follows that by first bearing, second bearing, commutator, brush, armature core, casing in the present invention
After carrying out selection and surface treatment processing with the parts such as end cap, can improve first bearing, second bearing, commutator, brush,
The corrosion resistance of the parts such as armature core, casing and end cap solves brush direct current motor and in the actual use environment can
There is the problem of stuck, running resistance increase or motor internal resistance increase, effectively extends the service life of brush direct current motor.
Erosion resistant coating includes silver-bearing copper nickel alloy coating, gold and silver coating and gold plate, and silver-bearing copper nickel alloy coating is electroplated in oxygen-free copper
The surface of base material, gold and silver coating are electroplated between silver-bearing copper nickel alloy coating and gold plate.Silver-bearing copper nickel alloy coating can provide compared with
Strong adhesive force, while chemical reaction will not be generated with anaerobic Copper base material, the plating of gold and silver coating in silver-bearing copper nickel alloy coating and
Between gold plate, connection transitional function can be played, to improve the electroplating quality of gold plate；Further, since anti-in this programme
Rotten layer includes silver-bearing copper nickel alloy coating, gold and silver coating and the triple coating for protection against corrosion of gold plate, therefore can further improve erosion resistant coating
Whole antiseptic property effectively extends the service life of commutator.
It is ferritic stainless steel powder metallurgical bearing that first bearing and second bearing, which are all made of metallographic structure,.So set
Meter, can improve the acid-resistant corrosion and wearability of two bearings.
Lubricating oil is marked with by high-pressure injection technique in the hole of first bearing and second bearing.When motor works,
Due to the swabbing action and frictional heating of output shaft rotation, make two bearings and lubricating oil expanded by heating, lubricating oil extrusion cavities
Gap, and then lubricating action is risen to friction surface, after two bearing coolings, lubricating oil is sucked back into hole again, to can guarantee two
A bearing need not add lubricating oil in a long time.
Armature core is made of multiple silicon steel sheets from tinertoy.So design can be convenient for the electroplating processes of follow-up corrosion prevention film.
Brush includes nickel silver alloy matrix and the palldium alloy fitting portion that is entrenched on nickel silver alloy matrix, and palldium alloy is embedding
Conjunction portion is between nickel silver alloy matrix and commutator.Since nickel silver alloy has good corrosion resistance, zinc
White brass alloy matrix also has stronger corrosion resistance, simultaneously because palldium alloy has good conductive property, therefore palladium closes
The electric conductivity of golden fitting portion, palldium alloy fitting portion are arranged between nickel silver alloy matrix and commutator, can improve
Electrical contact performance between brush and commutator.
Magnet ring is ferrite Hard Magnetic ring.It so can effectively inhibit the electromagnetic interference in environment.
These features and advantages of the present invention will the detailed elaboration in following specific implementation mode, attached drawing.
【Description of the drawings】
Following further describes the present invention with reference to the drawings：
Fig. 1 is the structural schematic diagram of brush direct current motor in the preferred embodiment of the present invention；
Fig. 2 is the structural schematic diagram of commutator in the preferred embodiment of the present invention；
Fig. 3 is the close-up schematic view of A in Fig. 2；
Fig. 4 is the structural schematic diagram of preferred embodiment of the present invention center brush.
【Specific implementation mode】
The technical solution of the embodiment of the present invention is explained and illustrated with reference to the attached drawing of the embodiment of the present invention, but under
It is only the preferred embodiment of the present invention to state embodiment, and not all.Based on the implementation example in the implementation mode, people in the art
Member's obtained other embodiments without making creative work, belong to protection scope of the present invention.
As shown in Figure 1, the brush direct current motor in this preferred embodiment includes stator module, rotor assembly and supports end cap
Component, stator module include casing 1, first bearing 2 and magnet ring 3, and magnet ring 3 is fixed on the madial wall of casing 1, and magnet ring 3 is to adopt
The ferrite Hard Magnetic ring made of injection molding or sintering process so can effectively inhibit the electromagnetic interference in environment.The one of casing 1
End is equipped with installing port, and the other end is equipped with the first mounting hole, and first bearing 2 is assemblied in the first mounting hole.Rotor assembly includes electricity
Pivot iron core 4, armature winding 5, commutator 6 and output shaft 7, armature winding 5 is around on armature core 4, the both ends of armature winding 5
It is connect with commutator 6, armature core 4, commutator 6 are fixed on output shaft 7.Supports end cap component includes end cap 8,9 and of brush
Second bearing 10, end cap 8 are mounted at the installing port of casing 1, and brush 9 is mounted on end cap 8 and is in electrical contact with commutator 6, end
Lid 8 is equipped with the second mounting hole, and second bearing 10 is assemblied in the second mounting hole, the both ends of output shaft 7 respectively with first bearing 2
It is slidably connected with second bearing 10.
First bearing 2 and second bearing 10 in this preferred embodiment are stainless steel powder metallurgical bearing, that is, the
One bearing 2 and second bearing 10 are stainless steel powder metallurgical product, and the chemism of stainless steel powder metallurgical bearing is weaker, no
Chemical attack easily occurs, therefore avoids first bearing 2 and second bearing 10 and locking occurs with output shaft 7.Preferably, this implementation
It is ferritic stainless steel powder metallurgical bearing that first bearing 2 and second bearing 10 in example, which are all made of metallographic structure,.So set
Meter, can further increase the acid-resistant corrosion and wearability of two bearings.
Since stainless steel powder metallurgical bearing can have many holes, the first bearing in the present embodiment after machine-shaping
2 and second bearing 10 hole in lubricating oil is marked with by high-pressure injection technique.Thus, when motor works, due to
The swabbing action and frictional heating that output shaft 7 rotates, make first bearing 2, second bearing 10 and lubricating oil expanded by heating, lubrication
Oil squeezes out hole, and then plays lubricating action to friction surface, after first bearing 2 and second bearing 10 cool down, lubricating oil and quilt
It sucks back in hole, to can guarantee that two bearings need not add lubricating oil in a long time.
As shown in Figures 2 and 3, the commutator 6 in this preferred embodiment includes anaerobic Copper base material 60 and plating in oxygen-free copper
Erosion resistant coating on substrate outer surface, the selection of no oxygen layer base material 60 can improve the electroplating quality of erosion resistant coating, so that erosion resistant coating can
To play preferably protective effect to no oxygen layer base material 60, avoids anaerobic Copper base material 60 that corrosion occurs and influence commutator 6 normally
Operating.Specifically, the erosion resistant coating in the present embodiment includes silver-bearing copper nickel alloy coating 61, gold and silver coating 62 and gold plate 63, silver-bearing copper
The plating of nickel alloy coating 61 is electroplated in the surface of anaerobic Copper base material 60, gold and silver coating 62 in silver-bearing copper nickel alloy coating 61 and gold plate
Between 63.Silver-bearing copper nickel alloy coating 61 can provide stronger adhesive force, and gold and silver coating 62 can play connection transitional function, with
Improve the adhesive force of the plating of gold plate 63；Further, since the erosion resistant coating in this programme includes silver-bearing copper nickel alloy coating 61, gold and silver
63 triple coating for protection against corrosion of coating 62 and gold plate, therefore the whole antiseptic property of erosion resistant coating is can further improve, effectively extend
The service life of commutator 6.
As shown in figure 4, the brush 9 in the present embodiment is using packfong as the palldium alloy brush of base material, specifically, brush 9
Including nickel silver alloy matrix 91 and the palldium alloy fitting portion 92 being entrenched on nickel silver alloy matrix 91, palldium alloy fitting portion 92
Between nickel silver alloy matrix 91 and the contact site of commutator 6.Since nickel silver alloy has good corrosion resistance,
Therefore nickel silver alloy matrix 91 also have stronger corrosion resistance, simultaneously because palldium alloy have good conductive property and
Hydrogen sulfide corrosion-resistant performance, therefore the electrical contact performance between brush 9 and commutator 6 can be improved.
Armature core 4 in this preferred embodiment is made of multiple silicon steel sheets from tinertoy, and the surface of armature core 4, which is equipped with, prevents
Rotten film, corrosion prevention film can carry out effective protection to armature core, avoid armature core and generate erosion because chemical attack occurs
Matter, so as to avoid motor, there is a phenomenon where stuck.Corrosion prevention film in this preferred embodiment is the plating formed by electroplating technology
Color zinc layers or the resin layer coated by electrophoresis process.It should be noted that：When corrosion prevention film is zinc electroplating with iridescent yellow chromate conversion coating layer, armature core
4 the difficulty that can reduce the color zinc layers of plating is made of tinertoy technique.
In addition, being equipped with corrosion prevention film on the surface of casing 1 and the surface of end cap 8 in this preferred embodiment, corrosion prevention film can be right
Casing 1 and end cap 8 carry out effective protection, and the two is avoided to be damaged because chemical attack occurs.It is anti-in this preferred embodiment
Rotten film is the zinc electroplating with iridescent yellow chromate conversion coating layer formed by electroplating technology or the resin layer coated by electrophoresis process.
In conclusion in the present embodiment by first bearing 2, second bearing 10, commutator 6, brush 9, armature core 4,
After the parts such as casing 1 and end cap 8 carry out selection and surface treatment processing, first bearing 2 can be improved, second bearing 10, changed
To the corrosion resistance of the parts such as device 6, brush 9, armature core 4, casing 1 and end cap 8, solves brush direct current motor in reality
The problem of will appear stuck, running resistance increase or motor internal resistance increase in the use environment of border, effectively extend DC brush electricity
The service life of machine.
It is 40 DEG C that brush direct current motor in the present embodiment, which is placed on temperature, and relative humidity is more than or equal to 85%RH, sulphur
In the environment of change hydrogen gas concentration is 0.8%, after carrying out corrosion resistance test in 48 hours, the items of brush direct current motor are electrical to join
Number is in indication range.By the brush direct current motor in the present embodiment be placed on temperature be 60 DEG C, relative humidity 90%RH
Hot and humid environment under, after carrying out corrosion resistance test in 168 hours, every electric parameter of brush direct current motor is in index
In range.Even if from above-mentioned test result twice it is found that brush direct current motor in the present embodiment feelings poor in environmental condition
Under condition, every electric parameter is still in indication range.Therefore compared with prior art in brush direct current motor, in the present embodiment
Brush direct current motor corrosion resistance it is more preferable.
In addition, by the way that the product data that market actually uses are counted and analyzed, the control valve of preservative treatment is not done
Motor failure rate is higher, and the brush direct current motor in the present embodiment does not occur leading to motor because motor corrodes in the phase at the same time
Defective valve.
The invention also discloses a kind of flow-meters comprising brush direct current motor described above.Flow measurement
Instrument can be gas meter, flow meter or water meter etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but not limited to attached drawing and interior described in specific implementation mode above
Hold.The modification of any function and structure principle without departing from the present invention is intended to be included in the range of claims.
Claims (9)
1. a kind of etch-proof brush direct current motor, including stator module, rotor assembly and supports end cap component, the rotor set
Part includes armature core and commutator, and the stator module includes casing, the first bearing on casing and magnet ring, described
Supports end cap component includes end cap, the second bearing on end cap and brush, which is characterized in that the first bearing and
Two bearings are stainless steel powder metallurgical bearing, and the commutator includes anaerobic Copper base material and plating outside the anaerobic Copper base material
Erosion resistant coating on surface, the brush are the surface of the armature core, casing using packfong as the palldium alloy brush of base material
Surface and the surface of end cap are equipped with corrosion prevention film.
2. etch-proof brush direct current motor according to claim 1, which is characterized in that the erosion resistant coating includes silver-bearing copper nickel
Alloy layer, gold and silver coating and gold plate, the silver-bearing copper nickel alloy coating plating is in the surface of the anaerobic Copper base material, the gold
Silvering is electroplated between the silver-bearing copper nickel alloy coating and gold plate.
3. etch-proof brush direct current motor according to claim 1, which is characterized in that the first bearing and the second axis
It is ferritic stainless steel powder metallurgical bearing to hold and be all made of metallographic structure.
4. etch-proof brush direct current motor according to claim 3, which is characterized in that the first bearing and the second axis
Lubricating oil is marked with by high-pressure injection technique in the hole held.
5. etch-proof brush direct current motor according to claim 1, which is characterized in that the armature core is by multiple silicon
Steel disc is constituted from tinertoy.
6. etch-proof brush direct current motor according to claim 1, which is characterized in that the brush includes that packfong closes
Auri body and the palldium alloy fitting portion being entrenched on the nickel silver alloy matrix, the palldium alloy mating position is in the zinc white
Between copper alloy matrix and the contact site of commutator.
7. the etch-proof brush direct current motor according to one of claim 1 to 6, which is characterized in that the corrosion prevention film is
The zinc electroplating with iridescent yellow chromate conversion coating layer formed by electroplating technology or the resin layer coated by electrophoresis process.
8. the etch-proof brush direct current motor according to one of claim 1 to 6, which is characterized in that the magnet ring is iron
Oxysome Hard Magnetic ring.
9. a kind of flow-meter, which is characterized in that the flow-meter further includes described in one of claim 1 to 8
Brush direct current motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810139683.7A CN108347147A (en) | 2018-02-11 | 2018-02-11 | A kind of etch-proof brush direct current motor and flow-meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810139683.7A CN108347147A (en) | 2018-02-11 | 2018-02-11 | A kind of etch-proof brush direct current motor and flow-meter |
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| CN108347147A true CN108347147A (en) | 2018-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270170A (en) * | 2019-12-05 | 2020-06-12 | 冮振双 | Manufacturing process of carbon fiber motor |
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