CN110144584A - A kind of coaxial three beams powder-feeding nozzle - Google Patents

A kind of coaxial three beams powder-feeding nozzle Download PDF

Info

Publication number
CN110144584A
CN110144584A CN201910478921.1A CN201910478921A CN110144584A CN 110144584 A CN110144584 A CN 110144584A CN 201910478921 A CN201910478921 A CN 201910478921A CN 110144584 A CN110144584 A CN 110144584A
Authority
CN
China
Prior art keywords
nozzle
powder
nozzle body
coaxial
beams
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
Application number
CN201910478921.1A
Other languages
Chinese (zh)
Inventor
刘祥宇
唱丽丽
徐建国
邢飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Zhongke Yuchen Technology Co Ltd
Original Assignee
Shenyang Zhongke Yuchen Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenyang Zhongke Yuchen Technology Co Ltd filed Critical Shenyang Zhongke Yuchen Technology Co Ltd
Priority to CN201910478921.1A priority Critical patent/CN110144584A/en
Publication of CN110144584A publication Critical patent/CN110144584A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00Coating starting from inorganic powder
    • C23C24/08Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Nozzles (AREA)

Abstract

The invention discloses a kind of coaxial three beams powder-feeding nozzles, including block in nozzle body, nozzle head, water cooling and straight mouth connector, the nozzle head is detachably connected on the lower section of the nozzle body, block is mounted in the inner cavity of the nozzle body in the water cooling, and also forms cooling trough between block and the nozzle body in the water cooling;The straight mouth connector is mounted on the top of the nozzle body.Beneficial effect is: when nozzle damage, the interchangeable nozzles head of lower part can be removed, new nozzle be reinstalled, compared with integral replacing nozzle, it not only saves and reconnects the time of each pipeline and nozzle location debugging on nozzle, and decrease the cost for remaking nozzle.Simultaneously as internal annular air intake structure, so that coaxial gas air inlet is more evenly, better Backup lightpath system.

Description

A kind of coaxial three beams powder-feeding nozzle
Technical field
The present invention relates to laser melting and coating technique fields, and in particular to a kind of coaxial three beams powder-feeding nozzle.
Background technique
Laser melting and coating technique is a kind of under laser beam effect, and metal powder is heated rapidly with matrix surface, is melted, cold But one layer of high performance alloy coat is formed in matrix surface after, so as to significantly improve wear-resisting, the corrosion resistance of matrix surface Etc. characteristics.Due to its have very big economic benefit, at present in the industrial production using more and more extensive.
During laser melting coating, laser beam reaches workpiece by the nozzle on laser head.Since laser beam itself can A large amount of heat is generated, in addition reflex of the laser on workpiece, so that nozzle is easy to damage because of overheat.In usual situation Under, replacement nozzle needs to remove nozzle entirety from laser head.After in new nozzle peace to laser head, it is also necessary to connect again Tube cell, water pipe and air inlet pipe are tapped into, and nozzle is also required to debug again at a distance from workpiece, causes greatly to time and cost Amount waste.Moreover, because being to be directly entered laser head by connector when the coaxial shielding gas air inlet of routine, so that in laser head It protects gas not uniform enough, comprehensive protection cannot be played to optical system.
Summary of the invention
The object of the invention is that a kind of coaxial three beams powder-feeding nozzle is provided to solve the above-mentioned problems, when nozzle damages The nozzle head of lower part can be removed, reinstall new nozzle head by bad when.
The present invention through the following technical solutions to achieve the above objectives:
A kind of coaxial three beams powder-feeding nozzle, including block and straight mouth connector in nozzle body, nozzle head, water cooling, the nozzle head It is detachably connected on the lower section of the nozzle body, block is mounted in the inner cavity of the nozzle body in the water cooling, and described Cooling trough is also formed between block and the nozzle body in water cooling;The straight mouth connector is mounted on the nozzle body Top;
Inlet opening, apopore, air inlet and several powder entering holes are additionally provided on the nozzle body, each powder entering hole is equal It is connected with one into powder connector;The inlet opening is connected with water supply connector, and the apopore is connected with water outlet connector, institute Air inlet is stated to be connected with inlet suction port.
The interchangeable nozzles head of lower part can be removed, be reinstalled newly when nozzle damage using above technical scheme Nozzle.The setting of the cooling trough, cooling water reach cooling trough after entering nozzle by inlet opening, reach to spray Blunt purpose but.It being mounted on powder entering hole into powder connector, powder feeding pipe into powder connector by being connected on nozzle, realization powder supply, The air inlet connects inlet suction port, makes nozzle with coaxial shielding gas.
Further, the inner cavity of the nozzle body is the combination of cylindrical cavity and rotary table chamber;Block is cylinder in the water cooling Shape structure, the columnar structured outside form circle convex platform, the inner wall cooperation of the circle convex platform and cylindrical cavity, the annulus Columnar structured part below boss and the cavity formed between the inner wall of the rotary table chamber are cooling trough, the cooling trough It is connected to the inlet opening and the apopore.
Further, the lateral surface of the circle convex platform offers the second seal groove, block in the nozzle body and water cooling The face of contact offers third seal groove.
Further, the straight mouth connector is equipped with threaded hole, by screw by straight mouth connector and the nozzle master Body is fixedly connected, and straight mouth connector is embedded in the inner cavity of the nozzle body and is fixed block in water cooling.
Further, block close to top offers the first seal groove in the water cooling, which is coupled close Seal will seal between block in water cooling and the straight mouth connector;
The inlet plenum of annular is formed between the circle convex platform and the straight mouth connector insertion nozzle chamber branch point.
Further, several air inlets are uniformly provided on the periphery of block in the water cooling, these air inlets with into Gas chamber connection.
Further, the nozzle head is equipped with screw hole, and nozzle head is connected with nozzle body by screw.
Further, there are three the powder entering hole opens up, the nozzle head is provided with the powder out with powder entering hole equal amount Hole, and the position of flour opening is corresponding with the position of powder entering hole and is connected to.
Further, the opening that each flour opening is connect with powder entering hole is also provided with chamfering and forms rotary table slot.
Further, the lower end of the nozzle body offers positioning spigot, forms positioning convex platform on the nozzle head, The positioning convex platform and positioning spigot cooperation position.
To sum up, the beneficial effects of the present invention are: when nozzle damage when, the interchangeable nozzles head of lower part can be removed, again New nozzle is installed, compared with integral replacing nozzle, not only saves and reconnects each pipeline and nozzle position on nozzle The time of debugging is set, and decreases the cost for remaking nozzle.Simultaneously as internal annular air intake structure, so that Coaxial gas air inlet more evenly, better Backup lightpath system.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is main view of the invention;
Fig. 2 is the D-D cross-sectional view of Fig. 1;
Fig. 3 is the axonometric drawing of Fig. 1.
The reference numerals are as follows:
1, nozzle body;2, nozzle head;2a, positioning convex platform;2b, flour opening;2c, chamfering;3, block in water cooling;3a, air inlet;4, Straight mouth connector;5, into powder connector;6, water supply connector;7, water outlet connector;8, inlet suction port;9, the first seal groove;10, second is close Sealing groove;11, third seal groove;12, cooling trough.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.
Shown in referring to figures 1-3, the present invention provides a kind of coaxial three beams powder-feeding nozzles, including nozzle body 1, nozzle head 2, block 3 and straight mouth connector 4 in water cooling, the nozzle head 2 is detachably connected on the lower section of the nozzle body 1, when nozzle damages Bad when, can remove the interchangeable nozzles head 2 of lower part, reinstall new nozzle head 2, high-efficient, at low cost.The water Cold interior piece 3 is mounted in the inner cavity of the nozzle body 1, and is also formed between block 3 and the nozzle body 1 in the water cooling Cooling trough 12;Cooling water reaches cooling trough 12 after entering nozzle, achievees the purpose that cooling to nozzle.The straight mouth connection Part 4 is mounted on the top of the nozzle body 1, and block 3 is fixed by straight mouth connector 4 in water cooling.On the nozzle body 1 also Equipped with inlet opening, apopore, air inlet and several powder entering holes, each powder entering hole is connected with one into powder connector 5 It connects;The inlet opening is connected with water supply connector 6, and the apopore is connected with water outlet connector 7, the air inlet and air inlet connecting First 8 are connected.
The interchangeable nozzles head 2 of lower part can be removed, be reinstalled new when nozzle damage using above technical scheme Nozzle.The setting of the cooling trough 12, cooling water reach cooling trough 12 after entering nozzle by inlet opening, reach To the purpose cooling to nozzle.It is mounted on powder entering hole into powder connector 5, powder feeding pipe is real by being connected on nozzle into powder connector 5 Existing powder supply, the air inlet connect inlet suction port 8, make nozzle with coaxial shielding gas.
As the preferred technical solution of this case, the inner cavity of the nozzle body 1 is the combination of cylindrical cavity and rotary table chamber;It is described Block 3 is columnar structured in water cooling, which forms circle convex platform, the circle convex platform and cylindrical cavity it is interior Wall cooperation, columnar structured part below the circle convex platform and the cavity formed between the inner wall of the rotary table chamber are cooling Sink 12, the cooling trough 12 are connected to the inlet opening and the apopore, and cooling water enters cooling trough by inlet opening In 12, effectively nozzle can be cooled down.
The lateral surface of the circle convex platform offers the second seal groove 10, and the nozzle body 1 is contacted with block 3 in water cooling Face offers third seal groove 11.The straight mouth connector 4 be equipped with threaded hole, by screw by straight mouth connector 4 with it is described Nozzle body 1 is fixedly connected, and straight mouth connector 4 is embedded in the inner cavity of the nozzle body 1 and is fixed block 3 in water cooling. Block 3 offers the first seal groove 9 close to top in the water cooling, which is coupled sealing ring for block 3 in water cooling It being sealed between the straight mouth connector 4, the first seal groove 9, the second seal groove 10 and third seal groove 11 are equipped with sealing ring, Effectively cooling water can be sealed.The circle convex platform and the straight mouth connector 4 are embedded between nozzle chamber branch point The inlet plenum of annular is formed, is uniformly provided with several air inlet 3a on the periphery of block 3 in the water cooling, these air inlets 3a is equal It is connected to inlet plenum, protection gas can enter nozzle interior from inlet plenum by the air inlet 3a of collar, so that coaxial gas air inlet More evenly, better Backup lightpath system.
The nozzle head 2 is equipped with screw hole, and nozzle head 2 is connected with nozzle body 1 by screw, can by screw Make 2 replaceable of nozzle head.There are three the powder entering hole opens up, the nozzle head 2 is provided with the powder out with powder entering hole equal amount Hole 2b, and the position of flour opening 2b is corresponding with the position of powder entering hole and is connected to.
The opening that each flour opening 2b is connect with powder entering hole is also provided with chamfering 2c and forms rotary table slot.From nozzle body 1 The metal powder of upper entrance is sent to workpiece surface by rotary table slot, and the chamfering 2c of powder entering end can be prevented caused by installation site deviation Powder leakage.
The lower end of the nozzle body 1 offers positioning spigot, and positioning convex platform 2a is formed on the nozzle head 2, described Positioning convex platform 2a and positioning spigot cooperation position, and thus do installation positioning to interchangeable nozzles.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (10)

1. a kind of coaxial three beams powder-feeding nozzle, it is characterised in that: connected including block in nozzle body, nozzle head, water cooling with straight mouth Part, the nozzle head are detachably connected on the lower section of the nozzle body, and block is mounted on the nozzle body in the water cooling In inner cavity, and cooling trough is also formed between block and the nozzle body in the water cooling;The straight mouth connector is mounted on The top of the nozzle body;
Inlet opening, apopore, air inlet and several powder entering holes are additionally provided on the nozzle body, each powder entering hole is equal It is connected with one into powder connector;The inlet opening is connected with water supply connector, and the apopore is connected with water outlet connector, institute Air inlet is stated to be connected with inlet suction port.
2. a kind of coaxial three beams powder-feeding nozzle according to claim 1, it is characterised in that: the inner cavity of the nozzle body is circle The combination of column chamber and rotary table chamber;Block is columnar structured in the water cooling, which forms circle convex platform, The cooperation of the inner wall of the circle convex platform and cylindrical cavity, columnar structured part below the circle convex platform in the rotary table chamber The cavity formed between wall is cooling trough, which is connected to the inlet opening and the apopore.
3. a kind of coaxial three beams powder-feeding nozzle according to claim 2, it is characterised in that: the lateral surface of the circle convex platform is opened Equipped with the second seal groove, the face that the nozzle body is contacted with block in water cooling offers third seal groove.
4. a kind of coaxial three beams powder-feeding nozzle according to claim 3, it is characterised in that: the straight mouth connector is equipped with spiral shell Straight mouth connector is fixedly connected by pit by screw with the nozzle body, and straight mouth connector is embedded in the nozzle body Inner cavity in block in water cooling is fixed.
5. a kind of coaxial three beams powder-feeding nozzle according to claim 4, it is characterised in that: block is opened close to top in the water cooling Equipped with the first seal groove, which is coupled sealing ring and will seal between block in water cooling and the straight mouth connector;
The inlet plenum of annular is formed between the circle convex platform and the straight mouth connector insertion nozzle chamber branch point.
6. a kind of coaxial three beams powder-feeding nozzle according to claim 5, it is characterised in that: in the water cooling on the periphery of block Several air inlets are uniformly provided with, these air inlets are connected to inlet plenum.
7. a kind of coaxial three beams powder-feeding nozzle according to claim 1, it is characterised in that: the nozzle head is equipped with screw Nozzle head is connected by hole by screw with nozzle body.
8. a kind of coaxial three beams powder-feeding nozzle according to claim 7, it is characterised in that: there are three the powder entering hole opens up, The nozzle head is provided with the flour opening with powder entering hole equal amount, and the position of flour opening it is corresponding with the position of powder entering hole and Connection.
9. a kind of coaxial three beams powder-feeding nozzle according to claim 8, it is characterised in that: each flour opening is connect with powder entering hole Opening be also provided with chamfering formed rotary table slot.
10. -9 any a kind of coaxial three beams powder-feeding nozzle according to claim 1, it is characterised in that: the nozzle body Lower end offers positioning spigot, and positioning convex platform is formed on the nozzle head, and the positioning convex platform and the positioning spigot cooperate Positioning.
CN201910478921.1A 2019-06-04 2019-06-04 A kind of coaxial three beams powder-feeding nozzle Pending CN110144584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910478921.1A CN110144584A (en) 2019-06-04 2019-06-04 A kind of coaxial three beams powder-feeding nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910478921.1A CN110144584A (en) 2019-06-04 2019-06-04 A kind of coaxial three beams powder-feeding nozzle

Publications (1)

Publication Number Publication Date
CN110144584A true CN110144584A (en) 2019-08-20

Family

ID=67590241

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910478921.1A Pending CN110144584A (en) 2019-06-04 2019-06-04 A kind of coaxial three beams powder-feeding nozzle

Country Status (1)

Country Link
CN (1) CN110144584A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111850547A (en) * 2020-07-24 2020-10-30 西安建筑科技大学 Multi-shaft ultrahigh-speed laser cladding nozzle
CN111962067A (en) * 2020-08-24 2020-11-20 常熟智造激光装备研究院有限公司 Powder feeding device for laser cladding
CN112030160A (en) * 2020-09-27 2020-12-04 熔创金属表面科技(常州)有限公司 Multi-axis laser cladding anti-gravity deflecting ring cone focusing powder feeding nozzle
CN112430813A (en) * 2020-12-11 2021-03-02 泰尔(安徽)工业科技服务有限公司 Split type laser cladding powder feeding nozzle and method for carrying out laser cladding by using same
WO2024045907A1 (en) * 2022-08-29 2024-03-07 上海嘉强自动化技术有限公司 Cooling structural body

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202643843U (en) * 2012-06-12 2013-01-02 沈阳新松机器人自动化股份有限公司 Laser cladding machining head
CN203741418U (en) * 2014-02-28 2014-07-30 中国石油大学(华东) Coaxial protective gas conveying device for laser cladding
CN104694922A (en) * 2015-03-30 2015-06-10 湖南大学 Ring hole type laser coaxial powder feeding nozzle
CN105290399A (en) * 2014-07-08 2016-02-03 大族激光科技产业集团股份有限公司 Powder feeding mechanism
CN107245715A (en) * 2017-06-12 2017-10-13 中国矿业大学 A kind of built-in sieve mesh type loop laser melting-painting nozzle
CN108687440A (en) * 2018-07-20 2018-10-23 苏州迅镭激光科技有限公司 A kind of gentle uniform laser cutting head gas path device of blowing
CN211311587U (en) * 2019-06-04 2020-08-21 沈阳中科煜宸科技有限公司 Coaxial three-beam powder feeding nozzle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202643843U (en) * 2012-06-12 2013-01-02 沈阳新松机器人自动化股份有限公司 Laser cladding machining head
CN203741418U (en) * 2014-02-28 2014-07-30 中国石油大学(华东) Coaxial protective gas conveying device for laser cladding
CN105290399A (en) * 2014-07-08 2016-02-03 大族激光科技产业集团股份有限公司 Powder feeding mechanism
CN104694922A (en) * 2015-03-30 2015-06-10 湖南大学 Ring hole type laser coaxial powder feeding nozzle
CN107245715A (en) * 2017-06-12 2017-10-13 中国矿业大学 A kind of built-in sieve mesh type loop laser melting-painting nozzle
CN108687440A (en) * 2018-07-20 2018-10-23 苏州迅镭激光科技有限公司 A kind of gentle uniform laser cutting head gas path device of blowing
CN211311587U (en) * 2019-06-04 2020-08-21 沈阳中科煜宸科技有限公司 Coaxial three-beam powder feeding nozzle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111850547A (en) * 2020-07-24 2020-10-30 西安建筑科技大学 Multi-shaft ultrahigh-speed laser cladding nozzle
CN111850547B (en) * 2020-07-24 2024-04-12 西安建筑科技大学 Multi-shaft ultra-high-speed laser cladding spray head
CN111962067A (en) * 2020-08-24 2020-11-20 常熟智造激光装备研究院有限公司 Powder feeding device for laser cladding
CN112030160A (en) * 2020-09-27 2020-12-04 熔创金属表面科技(常州)有限公司 Multi-axis laser cladding anti-gravity deflecting ring cone focusing powder feeding nozzle
CN112430813A (en) * 2020-12-11 2021-03-02 泰尔(安徽)工业科技服务有限公司 Split type laser cladding powder feeding nozzle and method for carrying out laser cladding by using same
WO2024045907A1 (en) * 2022-08-29 2024-03-07 上海嘉强自动化技术有限公司 Cooling structural body

Similar Documents

Publication Publication Date Title
CN110144584A (en) A kind of coaxial three beams powder-feeding nozzle
CN106322024A (en) Feeding sealing device for wet ball mill, sealing system and mounting method of sealing system
CN110455542A (en) A kind of operating condition type variable equipment water jetting cooler for high-temperature fuel gas
CN211311587U (en) Coaxial three-beam powder feeding nozzle
CN106319514A (en) Turbulence-thread rotational flow water-cooling device used for laser cladding nozzle
CN217474297U (en) Self-cleaning device of sintering furnace electrode component
CN104018942B (en) For fuel manifold joint and the gas turbine of gas turbine
CN201401240Y (en) Cylinder cover with oil injector cooling water mantle cavity and high-temperature resistant bushing
CN213238472U (en) Water-cooling spraying metallurgical electric furnace
CN213288608U (en) Rotary joint and bearing seat assembly structure in continuous casting roller system
CN208555517U (en) A kind of novel water ring cooling for copper pipe rolling special roller
CN201618638U (en) Metal organic source atomizer for preparing semiconductor material
CN219944581U (en) Be used for cast diverging device of aluminum alloy wheel hub
CN210920135U (en) Angle-shaped regulating valve
CN217330653U (en) Sintering furnace electrode component convenient to clean
CN213899904U (en) Freeze dryer
CN220926937U (en) CVD butterfly-shaped cavity structure
CN205528626U (en) Coal gasification nozzle with protecting cover
CN210499484U (en) Water spraying ring of main shaft ring
CN219951086U (en) Blast furnace mud gun rotary joint cooling system and blast furnace mud gun machine
CN221217724U (en) Ash discharger and anaerobic cracking furnace
CN212955195U (en) Steel slag hot braising device
CN220435429U (en) Ball conical surface seal structure
CN217843125U (en) Connecting pipe with cooling structure
CN210548778U (en) Nozzle conversion device for aqueous medium plasma cutting and welding machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: No.1, Haigang street, offshore economic zone, Shenyang, Liaoning Province, 114202

Applicant after: Shenyang Zhongke Yuchen Technology Co.,Ltd.

Address before: 114202 No. 1 Offshore Street, Shenyang Offshore Economic Zone, Anshan City, Liaoning Province

Applicant before: Shenyang Zhongke Yuchen Technology Co.,Ltd.