CN106050683B - A kind of wear and shock-resistant immersible pump - Google Patents
A kind of wear and shock-resistant immersible pump Download PDFInfo
- Publication number
- CN106050683B CN106050683B CN201610482817.6A CN201610482817A CN106050683B CN 106050683 B CN106050683 B CN 106050683B CN 201610482817 A CN201610482817 A CN 201610482817A CN 106050683 B CN106050683 B CN 106050683B
- Authority
- CN
- China
- Prior art keywords
- pump
- ceramic body
- metal substrate
- wear
- outlet pipe
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
-
- 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
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/083—Units comprising pumps and their driving means the pump being electrically driven for submerged use and protected by a gas-bell
-
- 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
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of wear and shock-resistant immersible pumps, belong to radial flow non-positive-displacement fluid pump technical field.The wear and shock-resistant immersible pump includes the pump housing, motor and impeller in the pump housing, pump cover is set on the pump housing, outlet pipe is formed on pump cover, motor output shaft is stretched out and is connected with impeller middle spindle downward, outlet pipe includes the metal substrate and ceramic body of tubular, metal substrate is formed with the mounting hole of perforation its external cylindrical surface and inner cylinder face, it is covered with cast layer on metal substrate external cylindrical surface and inner cylinder face, ceramic body be set to cast layer and mounting hole in, ceramic body be located at the metal substrate external cylindrical surface one end be made as it is cellular.Ceramic body can be fixedly secured on outlet pipe by the wear and shock-resistant immersible pump so that wear-resisting and impact resistance inside outlet pipe, it is at low cost.
Description
Technical field
The present invention relates to a kind of immersible pumps, belong to radial flow non-positive-displacement fluid pump technical field.
Background technology
Immersible pump generally comprises the pump housing, motor, impeller;Water inlet, water outlet are provided on the pump housing;Electric motor starting band
Dynamic wheel rotation, drives water to enter from water inlet, is then discharged from water outlet, water stream channel is the hollow portion by pump body
Divide the channel formed.
Immersible pump is the machinery for conveying liquid or liquid being made to be pressurized.It passes the mechanical energy of prime mover or other external energies
Liquid is given, liquid energy is made to increase, is mainly used to convey liquid to include water, oil, acid & alkali liquid, emulsion, suspended emulsion and liquid
Metal etc. also can transport liquid, admixture of gas and the liquid containing suspended solids.
According to the applicant understood, when containing considerable silt particle in water, the service life of immersible pump is frequently not to depend on
Motor quality but depending on water pump overcurrent part (such as impeller, pump cover) resistance to sand wear ability.For immersible pump,
The synthesis of the cost of raw material and processing cost, being cannot irrespective factor.It seeks and carries using low cost based on this condition
The approach of the high anti-sand abrasion performance of submersible pump overcurrent part is a project of significant.
Invention content
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, propose a kind of inexpensive and wear-resisting and resistance to punching
The wear and shock-resistant immersible pump hit.
The technical solution that the present invention proposes to solve above-mentioned technical problem is:A kind of wear and shock-resistant immersible pump, including pump
Body, motor and impeller in the pump housing are arranged pump cover on the pump housing, outlet pipe are formed on the pump cover, the motor is defeated
Shaft is stretched out and is connected with impeller middle spindle downward, and the outlet pipe includes the metal substrate and ceramic body of tubular, the gold
Belong to the mounting hole that substrate is formed with perforation its external cylindrical surface and inner cylinder face, on the metal substrate external cylindrical surface and inner cylinder face
It is covered with cast layer, the ceramic body is set in cast layer and mounting hole, and the ceramic body is located at the metal substrate external cylindrical surface
One end be made as it is cellular.
The present invention is using the advantageous effect of above-mentioned technical proposal:1)Due to outlet pipe include tubular metal substrate and
Ceramic body is formed with the mounting hole of perforation its external cylindrical surface and inner cylinder face by metal substrate, when making outlet pipe, can will make pottery
Porcelain body is set on mounting hole, and the cast layer outside outlet pipe is flowed by mounting hole inside outlet pipe, and ceramic body is fixedly secured
On the outlet pipe of tubular so that it is wear-resisting inside outlet pipe, it is at low cost;2)Since ceramic body is located at metal substrate external cylindrical surface
One end be made as it is cellular so that outlet pipe impact resistance.
The improvement of above-mentioned technical proposal is:It is coated with resin layer in the cast layer.
The improvement of above-mentioned technical proposal is:The ingredient and mass percentage content that the cast layer contains be:C:3.5~
3.7%, Sb:0.04~0.08%, Mn:0.40~0.60%, Cu:0.30~0.40%, remaining is Fe and is inevitably mingled with member
Element.
Antimony:630 DEG C of Sb fusing points, it is to promote pearlite formation element that can make the complete pearly-lustre of tissue to thin-section casting
Body, and it is atomic to different wall thickness matrix difference, sectional sensitivity significantly reduces.With the larger latent heat of fusion, it is added
The Sb of 0.04~0.08% content, hence it is evident that refinement macrostructure, microcell forms temperature fluctuation in part, causes indigenous graphite core
The heart can refine graphite.
The present invention is using the advantageous effect of above-mentioned technical proposal:It is raw by the way that micro Sb and Cu are added in cast layer
Produce of low cost, wear-resisting property is good so that the immersible pump service life that works in water is obviously improved.
The improvement of above-mentioned technical proposal is:The mounting hole is taper mounting hole, and the ceramic body is the corresponding installation
The conic ceramic body in hole.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the structural schematic diagram of wear and shock-resistant immersible pump of the embodiment of the present invention;
Fig. 2 is the cross-sectional structure schematic diagram of Fig. 1 outlet pipes.
Specific implementation mode
The wear and shock-resistant immersible pump of the present embodiment, as depicted in figs. 1 and 2, including the pump housing 1, the motor in the pump housing 1
2 and impeller 3.Pump cover 4 is set on the pump housing 1, outlet pipe 5 is formed on pump cover 4.2 output shaft of motor stretch out downward and with 3 center of impeller
Axis is connected.
Outlet pipe 5 includes the metal substrate 51 and ceramic body 52 of tubular, and metal substrate 51, which is formed with, penetrates through its external cylindrical surface
With the mounting hole 53 of inner cylinder face, cast layer 54 is covered on 51 external cylindrical surface of metal substrate and inner cylinder face.Ceramic body 52 is set
In in cast layer 54 and mounting hole 53.Ceramic body 52 be located at 51 external cylindrical surface of metal substrate one end be made as it is cellular.
Resin layer 55 is coated in the cast layer of the present embodiment.
The ingredient and mass percentage content that the cast layer 54 of the present embodiment contains be:C:3.5~3.7%, Sb:0.04~
0.08%, Mn:0.40~0.60%, Cu:0.30~0.40%, remaining is Fe and inevitable tramp element.
The mounting hole 53 of the present embodiment is taper mounting hole, and ceramic body 52 is the conic ceramic of the corresponding mounting hole 53
Body.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted
The protection domain asked.
Claims (1)
1. a kind of wear and shock-resistant immersible pump, including the pump housing, motor and impeller in the pump housing, pump is set on the pump housing
It covers, outlet pipe is formed on the pump cover, motor output shaft is stretched out and is connected with impeller middle spindle downward, it is characterised in that:It is described
Outlet pipe includes the metal substrate and ceramic body of tubular, and the metal substrate, which is formed with, penetrates through its external cylindrical surface and inner cylinder face
Mounting hole, cast layer is covered on the metal substrate external cylindrical surface and inner cylinder face, and the ceramic body is set to cast layer and peace
Fill hole in, the ceramic body be located at the metal substrate external cylindrical surface one end be made as it is cellular;
It is coated with resin layer in the cast layer;
The ingredient and mass percentage content that the cast layer contains be:C:3.5~3.7%, Sb:0.04~0.08%, Mn:
0.40~0.60%, Cu:0.30~0.40%, remaining is Fe and inevitable tramp element;
The mounting hole is taper mounting hole, and the ceramic body is the conic ceramic body of the corresponding mounting hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610482817.6A CN106050683B (en) | 2014-07-31 | 2014-07-31 | A kind of wear and shock-resistant immersible pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610482817.6A CN106050683B (en) | 2014-07-31 | 2014-07-31 | A kind of wear and shock-resistant immersible pump |
CN201410371866.3A CN104265647B (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410371866.3A Division CN104265647B (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106050683A CN106050683A (en) | 2016-10-26 |
CN106050683B true CN106050683B (en) | 2018-08-17 |
Family
ID=52157203
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610482972.8A Pending CN106122075A (en) | 2014-07-31 | 2014-07-31 | A kind of immersible pump |
CN201610481766.5A Pending CN106122073A (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
CN201610814425.5A Pending CN106194774A (en) | 2014-07-31 | 2014-07-31 | A kind of impact resistance immersible pump |
CN201610814258.4A Pending CN106321461A (en) | 2014-07-31 | 2014-07-31 | Wear and impact resistance submersible pump |
CN201610482817.6A Expired - Fee Related CN106050683B (en) | 2014-07-31 | 2014-07-31 | A kind of wear and shock-resistant immersible pump |
CN201610813806.1A Pending CN106286322A (en) | 2014-07-31 | 2014-07-31 | A kind of immersible pump |
CN201410371866.3A Active CN104265647B (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610482972.8A Pending CN106122075A (en) | 2014-07-31 | 2014-07-31 | A kind of immersible pump |
CN201610481766.5A Pending CN106122073A (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
CN201610814425.5A Pending CN106194774A (en) | 2014-07-31 | 2014-07-31 | A kind of impact resistance immersible pump |
CN201610814258.4A Pending CN106321461A (en) | 2014-07-31 | 2014-07-31 | Wear and impact resistance submersible pump |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610813806.1A Pending CN106286322A (en) | 2014-07-31 | 2014-07-31 | A kind of immersible pump |
CN201410371866.3A Active CN104265647B (en) | 2014-07-31 | 2014-07-31 | Wear and shock-resistant immersible pump |
Country Status (1)
Country | Link |
---|---|
CN (7) | CN106122075A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110319029B (en) * | 2019-06-19 | 2021-04-27 | 黎明职业大学 | Immersible pump device of reinforcing drainage flow |
CN111472995A (en) * | 2020-04-16 | 2020-07-31 | 襄阳五二五泵业有限公司 | Manufacturing method of silicon carbide ceramic lining metal pump cover |
CN111396367A (en) * | 2020-05-11 | 2020-07-10 | 山东省章丘鼓风机股份有限公司 | Drag-reducing wear-resistant slurry pump volute |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052133A (en) * | 1975-11-12 | 1977-10-04 | The Gorman-Rupp Company | Corrosion and abrasion resistant centrifugal pump |
DE3344765A1 (en) * | 1983-12-10 | 1985-06-13 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Submerged pump |
DE3741978A1 (en) * | 1987-12-11 | 1989-06-22 | Philips Patentverwaltung | PUMPING DEVICE FOR LIGHT VISCOSE LIQUIDS |
JP2766437B2 (en) * | 1992-08-25 | 1998-06-18 | 株式会社クボタ | Manufacturing method of heat-resistant composite ceramic tube |
CN2330815Y (en) * | 1997-02-28 | 1999-07-28 | 罗定市水泵厂 | Submerged pump with axial seal structure |
CN2646515Y (en) * | 2003-10-30 | 2004-10-06 | 陈海渊 | High temperature resistant and abrasion proofing multiple-unit tube |
CN2736626Y (en) * | 2004-08-24 | 2005-10-26 | 张俊海 | Antiseptic water delivery pipe |
CN100351567C (en) * | 2005-02-03 | 2007-11-28 | 西安建筑科技大学 | Abrasion proof pipe with ternary composite material as liner and preparing technique thereof |
CN101225496A (en) * | 2008-01-31 | 2008-07-23 | 山东省耐磨耐蚀材料工程技术研究中心 | Sea water corrosion resistant low-alloy cast iron |
CN201407429Y (en) * | 2009-04-23 | 2010-02-17 | 朱华平 | High-temperature and abrasion resistant composited pipe |
CN102003396A (en) * | 2010-12-14 | 2011-04-06 | 四川润德机电技术有限公司 | Self-cooling guide vane downdraft type submersible pump |
CN102206784A (en) * | 2011-04-29 | 2011-10-05 | 吉林大学 | Friction disk material |
KR101089788B1 (en) * | 2011-05-24 | 2011-12-07 | 주식회사 금양테크 | Pipe for wear-resistant having improved durability |
CN202501180U (en) * | 2012-03-23 | 2012-10-24 | 任明 | Wear-resisting metal ceramic composite board |
CN202852217U (en) * | 2012-10-19 | 2013-04-03 | 湖南潇湘源科技开发有限责任公司 | High-pressure-resisting glass fiber reinforced plastic pipeline |
CN103206589B (en) * | 2013-03-23 | 2016-06-29 | 广州有色金属研究院 | A kind of manufacture method of composite special-shaped pipeline |
CN103286222B (en) * | 2013-06-29 | 2016-04-06 | 苏州海而仕信息科技有限公司 | Wear-resisting diel |
CN203541492U (en) * | 2013-11-27 | 2014-04-16 | 江苏凯特汽车部件有限公司 | Compound type liquid lifting tube for low pressure casting |
-
2014
- 2014-07-31 CN CN201610482972.8A patent/CN106122075A/en active Pending
- 2014-07-31 CN CN201610481766.5A patent/CN106122073A/en active Pending
- 2014-07-31 CN CN201610814425.5A patent/CN106194774A/en active Pending
- 2014-07-31 CN CN201610814258.4A patent/CN106321461A/en active Pending
- 2014-07-31 CN CN201610482817.6A patent/CN106050683B/en not_active Expired - Fee Related
- 2014-07-31 CN CN201610813806.1A patent/CN106286322A/en active Pending
- 2014-07-31 CN CN201410371866.3A patent/CN104265647B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN106321461A (en) | 2017-01-11 |
CN106286322A (en) | 2017-01-04 |
CN106122075A (en) | 2016-11-16 |
CN106122073A (en) | 2016-11-16 |
CN106194774A (en) | 2016-12-07 |
CN104265647A (en) | 2015-01-07 |
CN104265647B (en) | 2016-11-09 |
CN106050683A (en) | 2016-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106050683B (en) | A kind of wear and shock-resistant immersible pump | |
CN105782069B (en) | Using the wear-resisting immersible pump of ceramic body | |
CN105673522B (en) | A kind of wear-resisting immersible pump | |
CN105782134B (en) | Jet vacuum pump with immersible pump | |
CN105864058B (en) | Wear-resistant submersible pump adopting ceramic body | |
CN106122072B (en) | A kind of wear-resisting jet vacuum pump using ceramic body | |
CN106015119B (en) | A kind of jet vacuum pump | |
CN104179710B (en) | Immersible pump | |
CN104265688B (en) | Wear-resistant pipe | |
CN104265688A (en) | Wear resistant pipe | |
CN104265646A (en) | Immersible pump with adjustable water outlet pressure | |
CN205677853U (en) | A kind of novel centrifugal axial flow combined type immersible pump | |
CN203248394U (en) | Sealing structure used for pump or rotary device | |
CN105864112B (en) | A kind of adjustable jet vacuum pump of discharge pressure using immersible pump | |
CN105757007B (en) | Using the jet vacuum pump of immersible pump | |
CN105782133B (en) | A kind of method of work of adjustable discharge pressure jet vacuum pump | |
CN1952604A (en) | New plug-in water meter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20180706 Address after: 528415 E building, No. 1, Lu Yun Road, Xiaolan Town, Zhongshan, Guangdong (No. 58, block B, North District, E) Applicant after: ZHONGSHAN HAIYI ELECTRIC APPLIANCE Co.,Ltd. Address before: 213000 Jinling North Road, Xinbei District, Changzhou, Jiangsu, China, Hohai University Applicant before: Chong Mengxia |
|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20200731 |