CN107524610A - A kind of Magnetic driving formula high-temperature resistant pump - Google Patents
A kind of Magnetic driving formula high-temperature resistant pump Download PDFInfo
- Publication number
- CN107524610A CN107524610A CN201710812019.XA CN201710812019A CN107524610A CN 107524610 A CN107524610 A CN 107524610A CN 201710812019 A CN201710812019 A CN 201710812019A CN 107524610 A CN107524610 A CN 107524610A
- Authority
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- China
- Prior art keywords
- impeller
- temperature resistant
- magnet rotor
- pump
- magnetic driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims description 18
- 210000004907 gland Anatomy 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Abstract
The invention belongs to pump technical field, and in particular to the Magnetic driving component of a kind of Magnetic driving formula high-temperature resistant pump, including the pump housing, impeller assembly and the driving impeller assembly work, the high-temperature resistant pump also include being used for the heat sink for reducing the Magnetic driving assembly temperature.The beneficial effects of the invention are as follows：The high-temperature resistant pump of the present invention is provided with heat sink, when can effectively reduce pump housing work, the temperature of inside and outside magnet rotor, inside and outside magnet rotor is avoided when conveying fluid temperature is too high, due to producing loss of excitation, motor transmission efficiency is caused to decline, the efficiency of pump also declines.Tube-axial fan cooling replaces traditional circumscribed forced water circulation to cool down, simple in construction, easy to operate and more preferable to the cooling-down effect of inside and outside magnet rotor, greatly improves motor transmission efficiency.
Description
Technical field
The invention belongs to pump technical field, and in particular to a kind of Magnetic driving formula high-temperature resistant pump.
Background technology
Magnetic driving formula high-temperature resistant pump is mainly used in petroleum chemical industry, and Magnetic driving formula high-temperature resistant pump is to apply modern magnetic force
Principle is learned, a kind of chemical flow-process pump of contactless indirect drive is realized using permanent magnet.Magnetic driving formula high-temperature resistant pump is by pump, magnetic force
Driver, motor three parts composition.When motor driven outer rotor assembly rotates, by the effect magnetic line of force in magnetic field pass through every
Internal rotor assembly and impeller synchronous rotary, medium is driven to be completely enclosed within static separation sleeve from set, so as to reach No leakage
The purpose of medium is pumped, the shaft sealing leakage for thoroughly solving mechanical pump, is hermetically sealed, No leakage, free of contamination novel work
Industry pump.Magnetic driving formula high-temperature resistant pump is to prevent run, drip, leak phenomenon in chemical-process, eliminates environmental pollution, creates " No leakage
Workshop ", " leakproof plant ", realize safely, the ideal pump carried out production strictly in line with rules and regulations.But because inside and outside magnet rotor is in conveying liquid
Temperature can produce loss of excitation when too high, electric-motor drive efficiency declines, and the efficiency of pump also declines.And because import liquid stream is to impeller
Axial impact produce that axial force is larger, and the vibration of pump increase, the whole efficiency of pump declines.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of Magnetic driving formula high-temperature resistant pump, can effectively drop
During low pump housing work, the temperature of inside and outside magnet rotor.
The invention provides following technical scheme：
The magnetic of a kind of Magnetic driving formula high-temperature resistant pump, including the pump housing, impeller assembly and the driving impeller assembly work drives
Dynamic component, the high-temperature resistant pump also include being used for the heat sink for reducing the Magnetic driving assembly temperature.
Preferably, the Magnetic driving component includes outer magnet rotor and is magnetically coupled with the outer magnet rotor in transmission
Magnet rotor, the outer magnet rotor are rotated by motor driven, and the interior magnet rotor is arranged on inside the impeller assembly.
Preferably, the heat sink is the tube-axial fan being arranged on the outer magnet rotor.
Preferably, the impeller assembly includes impeller, impeller hub and impeller axle, the impeller, impeller hub and interior magnetic
Rotor is integrated part, and the integral piece is rotated by sliding bearing around impeller axle, and the interior magnet rotor is arranged in impeller hub
Portion, the high-temperature resistant pump also include preceding shaft stool, rear axle support, wear-resisting clasp and separation sleeve, and the impeller axle is close to impeller
One end is connected by preceding shaft stool with wear-resisting choma, and the impeller axle other end is connected by rear axle support with separation sleeve.
Preferably, the impeller is provided with elastic choma, the elastic choma and the wear-resisting choma close to pump inlet side
Friction pair is complemented each other to form to be used to reduce fluid media (medium) volume caused by cover plate to impeller inlet backflow before the impeller
Loss and the axial force of balance high-temperature resistant pump.
Preferably, the high-temperature resistant pump also includes bracket, pump cover, gland, and the pump cover, bracket pass through bolt and pump housing phase
Even, the pump cover compresses gland, and the separation sleeve is connected with the pump housing by gland, so as to which high-temperature medium and the outer magnetic be turned
Son, motor isolation separate.
Preferably, the wear-resisting choma uses silicon carbide material, and the elastic choma uses fluorubber material.
Preferably, the outer magnet rotor is integrated part with tube-axial fan.
Preferably, the outer magnet rotor is provided with the bolt hole one of radial direction, and bolt hole two is correspondingly provided with tube-axial fan,
Radial screw fixes tube-axial fan and outer magnet rotor through bolt hole one, bolt hole two.
Preferably, the pump cover is provided with through hole, and the gap between the through hole, outer magnet rotor and separation sleeve collectively forms
The air channel being engaged with the tube-axial fan.
The beneficial effects of the invention are as follows：
1st, high-temperature resistant pump of the invention is provided with heat sink, when can effectively reduce pump housing work, inside and outside magnet rotor
Temperature, avoid inside and outside magnet rotor convey fluid temperature it is too high when, due to produce loss of excitation, cause under motor transmission efficiency
Drop, the efficiency of pump also decline.
2nd, the type of drive of high-temperature resistant pump of the present invention, motor drive outer magnet rotor to rotate by axle first, high-temperature resistant pump
Impeller and interior magnet rotor one, outer magnet rotor drives coupled inner magnet to rotate, so as to realize the rotation of impeller.Cross herein
Cheng Zhong, fixed impeller axle is not rotated on axle bearing, and impeller axle is fixed with separation sleeve and wear-resisting choma, only plays support
The effect of impeller, it is possible to disturbance of the uneven influent stream to pump speed field caused by avoiding impeller axle rotation, improve high temperature resistant
The hydraulic performance of pump, and the power loss caused by impeller axle and sliding bearing rub can be reduced to improve efficiency, together
When can reduce vibration and noise improve operation stability.
3rd, tube-axial fan cooling replaces traditional circumscribed forced water circulation to cool down, simple in construction, easy to operate, and
It is more preferable to the cooling-down effect of inside and outside magnet rotor, greatly improve motor transmission efficiency.
4th, elastic choma and wear-resisting choma complement each other to form friction pair, reduce impeller higher-pressure region and low-pressure area it
Between gap, can both extend choma service life when balancing high-temperature resistant pump axial force, can also reduce front shroud of impeller return
The volumetric loss of stream, improve the efficiency of pump.
Brief description of the drawings
Fig. 1 is Magnetic driving formula high-temperature resistant pump structural representation；
Fig. 2 is pump body structure schematic diagram；
Fig. 3 is the sectional view of outer magnet rotor and heat sink；
Fig. 4 is the side view of outer magnet rotor and heat sink；
Fig. 5 is wear-resisting clasp and elastic choma mutual cooperation figure；
Fig. 6 is the sectional view of pump cover；
Fig. 7 is the front view of pump cover；
Fig. 8 is the sectional view of bracket.
The implication marked in accompanying drawing is as follows：
The wear-resisting separation sleeve 141- separation sleeve reinforcing sleeves of clasp 14 of shaft stool 12- rear axle supports 13- before 10- pump housings 11-
15- pump inlet 16- elasticity choma 17- bracket 171- perforate 18- pump cover 181- through hole 19- gland 21- impeller 22- leaves
Take turns the outer 40- heat sink 41- bolts hole two of magnet rotor 321- bolts hole one of magnet rotor 32- in wheel hub 23- impeller axles 31-
50- motor 60- sliding bearings
Embodiment
The present invention is illustrated with reference to specific embodiment.
A kind of Magnetic driving of Magnetic driving formula high-temperature resistant pump, including the pump housing 10, impeller assembly and driving impeller assembly work
Component, high-temperature resistant pump also include being used for the heat sink 40 for reducing the Magnetic driving assembly temperature.The high-temperature resistant pump of the present embodiment
Be provided with heat sink 40, can effectively reduce the pump housing 10 work when, the temperature of inside and outside magnet rotor 31,32, avoid in,
Outer magnet rotor 31,32, due to producing loss of excitation, causes motor transmission efficiency to decline, the efficiency of pump when conveying fluid temperature is too high
Also decline.
Further optimize above-described embodiment, heat sink 40 is the tube-axial fan being arranged on the outer magnet rotor 32.
Tube-axial fan can suck cold wind at the perforate 171 on bracket 17, and by outer magnet rotor 32 and separation sleeve reinforcing sleeve
Gap between 141, finally discharged at the side through hole 181 of pump cover 18, tube-axial fan cooling replaces traditional circumscribed strong
Water circulation cooling processed, it is simple in construction, easy to operate and more preferable to the cooling-down effect of inside and outside magnet rotor 31,32, make motor 50
Transmission efficiency greatly improves.
Further optimize above-described embodiment, Magnetic driving component includes outer magnet rotor 32 and carries out magnetic coupling with outer magnet rotor 32
The interior magnet rotor 31 of transmission is closed, outer magnet rotor 32 drives rotation by motor 50, and interior magnet rotor 31 is arranged in the impeller assembly
Portion.Impeller assembly includes impeller 21, impeller hub 22 and impeller axle 23, and impeller 21, impeller hub 22 and interior magnet rotor 31 are one
Body part, the integral piece are rotated by sliding bearing 60 around impeller axle 23, and interior magnet rotor 31 is arranged on inside impeller hub 22, resistance to
High-temperature pump also includes preceding shaft stool 11, rear axle support 12, wear-resisting clasp 13 and separation sleeve 14, impeller axle 23 close to impeller 21 one
End is connected by preceding shaft stool 11 with wear-resisting choma 13, and the other end of impeller axle 23 is connected by rear axle support 12 with separation sleeve 14.
The type of drive of the present embodiment high-temperature resistant pump, motor 50 drive outer magnet rotor 32 to rotate by axle first, the impeller of high-temperature resistant pump
21 is integral with interior magnet rotor 31, and outer magnet rotor 32 drives coupled interior magnet rotor 31 to rotate, so as to realize the rotation of impeller 21
Turn.In the process, impeller axle 23 fixed on axle bearing 11,12 does not rotate, impeller axle 23 and separation sleeve 14 and resistance to
Ground ring 13 is fixed, and only plays a part of to support impeller 21, it is possible to avoids uneven influent stream pair caused by the rotation of impeller axle 23
The disturbance of pump speed field, the hydraulic performance of high-temperature resistant pump is improved, and can reduced because impeller axle 23 and sliding bearing 60 are rubbed
Power loss caused by wiping improves efficiency, while can reduce vibration and noise improves operation stability.
Further optimize above-described embodiment, impeller 21 is provided with elastic choma 16, elastic choma 16 close to the side of pump inlet 15
Friction pair is complemented each other to form with the wear-resisting choma 13, reduces the gap between the higher-pressure region of impeller 21 and low-pressure area,
Both choma service life can be extended when balancing high-temperature resistant pump axial force, the volume of the front shroud of impeller 21 backflow can also be reduced
Loss, improve the efficiency of pump.
Further optimize above-described embodiment, high-temperature resistant pump also includes bracket 17, pump cover 18, gland 19, the pump cover 18, support
Frame 17 is connected by bolt with the pump housing 10, and pump cover 18 compresses gland 19, and separation sleeve 14 is connected with the pump housing 10 by gland 18, from
And high-temperature medium is isolated with outer magnet rotor 32, motor 50 and separated.
Further optimize above-described embodiment, wear-resisting choma 13 uses silicon carbide material, and elastic choma 16 uses fluorubber material
Matter.
Further optimize above-described embodiment, outer magnet rotor 32 is integrated part with tube-axial fan.
Further optimize above-described embodiment, outer magnet rotor 32 is provided with the bolt hole 1 of radial direction, right on tube-axial fan
Bolt hole 2 41 should be provided with, radial screw fixes tube-axial fan and outer magnet rotor 31 through bolt hole one, bolt hole two.
Further optimize above-described embodiment, pump cover 18 is provided with through hole 181, through hole 181, outer magnet rotor 32 and separation sleeve 14
Between gap collectively form the air channel being engaged with tube-axial fan
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
- A kind of 1. Magnetic driving formula high-temperature resistant pump, it is characterised in that including the pump housing (10), impeller assembly and the driving impeller sets The Magnetic driving component of part work, the high-temperature resistant pump also include being used for the heat sink for reducing the Magnetic driving assembly temperature (40)。
- 2. a kind of Magnetic driving formula high-temperature resistant pump according to claim 1, it is characterised in that the Magnetic driving component includes outer Magnet rotor (32) and the interior magnet rotor (31) that transmission is magnetically coupled with the outer magnet rotor (32), the outer magnet rotor (32) Driven and rotated by motor (50), the interior magnet rotor (31) is arranged on inside the impeller assembly.
- 3. a kind of Magnetic driving formula high-temperature resistant pump according to claim 2, it is characterised in that the heat sink (40) is to set Put the tube-axial fan on the outer magnet rotor (32).
- 4. a kind of Magnetic driving formula high-temperature resistant pump according to claim 3, it is characterised in that the impeller assembly includes impeller (21), impeller hub (22) and impeller axle (23), the impeller (21), impeller hub (22) and interior magnet rotor (31) are integrated Part, the integral piece are rotated by sliding bearing (60) around impeller axle (23), and the interior magnet rotor (31) is arranged on impeller hub (22) internal, the high-temperature resistant pump also includes preceding shaft stool (11), rear axle support (12), wear-resisting clasp (13) and separation sleeve (14), the impeller axle (23) is connected close to one end of impeller (21) by preceding shaft stool (11) with wear-resisting choma (13), described Impeller axle (23) other end is connected by rear axle support (12) with separation sleeve (14).
- 5. a kind of Magnetic driving formula high-temperature resistant pump according to claim 4, it is characterised in that the impeller (21) is entered close to pump Mouth (15) side is provided with elastic choma (16), and the elastic choma (16) complements each other to form a pair with the wear-resisting choma (13) Friction pair be used to reduce fluid media (medium) in volumetric loss caused by impeller (21) front shroud to impeller (21) circumfluence and Balance the axial force of high-temperature resistant pump.
- 6. a kind of Magnetic driving formula high-temperature resistant pump according to claim 5, it is characterised in that the high-temperature resistant pump also includes support Frame (17), pump cover (18), gland (19), the pump cover (18), bracket (17) are connected by bolt with the pump housing (10), the pump cover (18) gland (19) is compressed, the separation sleeve (14) is connected with the pump housing (10) by gland (19) so that by high-temperature medium and The outer magnet rotor (32), motor (50) isolation separate.
- 7. a kind of Magnetic driving formula high-temperature resistant pump according to claim 6, it is characterised in that the wear-resisting choma (13) uses Silicon carbide material, the elastic choma (16) use fluorubber material.
- 8. a kind of Magnetic driving formula high-temperature resistant pump according to claim 7, it is characterised in that the outer magnet rotor (32) and axle Flow fan is integrated part.
- 9. a kind of Magnetic driving formula high-temperature resistant pump according to claim 3, it is characterised in that set on the outer magnet rotor (32) Have the bolt hole one (321) of radial direction, be correspondingly provided with bolt hole two (41) on tube-axial fan, radial screw through bolt hole one, Bolt hole two is fixed by tube-axial fan and outer magnet rotor (31).
- 10. a kind of Magnetic driving formula high-temperature resistant pump according to claim 6, it is characterised in that the pump cover (18) is provided with Through hole (181), the gap between the through hole (181), outer magnet rotor (32) and separation sleeve (14) collectively form and the axle stream The air channel that formula fan is engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812019.XA CN107524610A (en) | 2017-09-11 | 2017-09-11 | A kind of Magnetic driving formula high-temperature resistant pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812019.XA CN107524610A (en) | 2017-09-11 | 2017-09-11 | A kind of Magnetic driving formula high-temperature resistant pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107524610A true CN107524610A (en) | 2017-12-29 |
Family
ID=60736484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710812019.XA Pending CN107524610A (en) | 2017-09-11 | 2017-09-11 | A kind of Magnetic driving formula high-temperature resistant pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524610A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273839A (en) * | 2018-03-14 | 2019-09-24 | 三花亚威科电器设备（芜湖）有限公司 | Pump and dish-washing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100935707B1 (en) * | 2009-04-30 | 2010-01-07 | 케이이티주식회사 | Magnetic drive-type sealless pump |
| CN202251019U (en) * | 2011-08-16 | 2012-05-30 | 上海佰诺泵阀有限公司 | Lining fluorine magnetic drive pump |
| CN202840733U (en) * | 2012-06-02 | 2013-03-27 | 安徽江南泵阀有限公司 | External magnetic rotor having fan blades |
| CN206190555U (en) * | 2016-11-18 | 2017-05-24 | 安徽南方化工泵业有限公司 | High temperature resistant lining fluorine magnetic drive pump structure |
| CN207278532U (en) * | 2017-09-11 | 2018-04-27 | 合肥工业大学 | A kind of Magnetic driving formula high-temperature resistant pump |
-
2017
- 2017-09-11 CN CN201710812019.XA patent/CN107524610A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100935707B1 (en) * | 2009-04-30 | 2010-01-07 | 케이이티주식회사 | Magnetic drive-type sealless pump |
| CN202251019U (en) * | 2011-08-16 | 2012-05-30 | 上海佰诺泵阀有限公司 | Lining fluorine magnetic drive pump |
| CN202840733U (en) * | 2012-06-02 | 2013-03-27 | 安徽江南泵阀有限公司 | External magnetic rotor having fan blades |
| CN206190555U (en) * | 2016-11-18 | 2017-05-24 | 安徽南方化工泵业有限公司 | High temperature resistant lining fluorine magnetic drive pump structure |
| CN207278532U (en) * | 2017-09-11 | 2018-04-27 | 合肥工业大学 | A kind of Magnetic driving formula high-temperature resistant pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273839A (en) * | 2018-03-14 | 2019-09-24 | 三花亚威科电器设备（芜湖）有限公司 | Pump and dish-washing machine |
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