CN109187572A - For bleeding agent aspiration device during Liquid penetrant testing - Google Patents
For bleeding agent aspiration device during Liquid penetrant testing Download PDFInfo
- Publication number
- CN109187572A CN109187572A CN201811336983.0A CN201811336983A CN109187572A CN 109187572 A CN109187572 A CN 109187572A CN 201811336983 A CN201811336983 A CN 201811336983A CN 109187572 A CN109187572 A CN 109187572A
- Authority
- CN
- China
- Prior art keywords
- lower case
- bleeding agent
- piston
- device during
- liquid penetrant
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses for bleeding agent aspiration device during Liquid penetrant testing, including upper housing, lower case and electromagnetic coil assembly, lower case is connected to upper housing lower end, the piston slided up and down along lower case inner wall is provided in lower case, battery unit and electromagnetic coil assembly are provided in upper housing, switch is provided on upper housing, battery unit, switch and electromagnetic coil assembly electrical connection, electromagnetic coil assembly includes coil rack, enamel-cover line winding group, static iron core, movable core, enamel-cover line winding group is wound on coil rack, static iron core is fixed on the upper end of coil rack, movable core is provided in coil rack, the lower end of the movable core is fixedly connected with the piston, spring is arranged with outside the lower part of movable core, the upper end of the spring offsets with coil rack, its lower end offsets with piston, by applying negative pressure to bleeding agent, add Bleeding agent in fast Surface-breaking defect is bled back in imaging agent, is reduced Liquid penetrant testing and is influenced by temperature degree.
Description
Technical field
The present invention relates to the Liquid penetrant testing equipment technical fields of non-destructive testing, are particularly used for during Liquid penetrant testing
Bleeding agent aspiration device.
Background technique
The general step of Liquid penetrant testing in non-destructive testing: 1. checking matters surface treatment;2. applying penetrating fluid;3. stagnating certain
Time;4. surface penetration liquid cleans;5. applying imaging agent;6. the penetrating fluid of defect internal residual is rasterized agent and adsorbs, into
Row observation;7. determining defects.
The working principle of Liquid penetrant testing is: workpiece surface is applied the bleeding agent containing fluorescent dye or illuminating colour
Afterwards, under capillary action, by certain time, bleeding agent can penetrate into Surface-breaking defect;It is extra to remove working surface
Bleeding agent applies adsorbing medium --- imaging agent, equally under capillary action, imaging agent after drying, then in workpiece surface
The bleeding agent in defect will be attracted, i.e. bleeding agent is bled back in imaging agent;(black light or white light), fault location under certain light source
Bleeding agent trace be shown (yellow-green fluorescence or hunting pink), to detect the pattern and distribution of defect.
The process of imaging is that the penetrating fluid of fault location is adsorbed to piece surface with imaging agent, generates high-visible defect
Image, time of developing cannot be too long, and otherwise defect, which is shown, to fog, time of developing be 10~30 minutes, imaging agent with a thickness of
0.05~0.07 millimeter, and in the prior art, operator is being formally that should carry out related test to workpiece sensing, needs to measure
Certain class workpiece use certain class imaging agent under the optimal temperature of imaging and the time, excessively and insufficient time of developing or temperature,
When will influence the differentiation of defect, therefore larger by temperature in the process of the imaging of Liquid penetrant testing, while need longer imaging
Between, cause detection efficiency low, testing result poor reliability, it is also desirable to which operator has operating experience abundant, increases detection
Cost.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to above-mentioned state of the art, and provides and be used for Liquid penetrant testing process
Middle bleeding agent aspiration device, operation of the present invention is convenient, and the bleeding agent in Surface-breaking defect is accelerated to bleed back in imaging agent, reduces
Liquid penetrant testing is influenced by temperature degree, effectively saves detection time, improves detection reliability, while improving working efficiency,
The present invention is suitable for the more smooth checking matter in surface.
The technical scheme of the invention to solve the technical problem is:
For bleeding agent aspiration device during Liquid penetrant testing, including upper housing, lower case and electromagnetic coil assembly, lower case
It is connected to upper housing lower end, the piston slided up and down along lower case inner wall is provided in lower case, is provided with battery in upper housing
Unit and electromagnetic coil assembly are provided with switch, battery unit, switch and electromagnetic coil assembly electrical connection, electricity on upper housing
Magnetic coil assemblies include coil rack, enamel-cover line winding group, static iron core, movable core, and enamel-cover line winding group is wound on coil rack,
Static iron core is fixed on the upper end of coil rack, is provided with movable core in coil rack, and the lower end of the movable core and piston are solid
It is fixed to connect, it is arranged with spring outside the lower part of movable core, upper end and the coil rack of the spring offset, lower end and piston phase
It supports;Lower case bottom is against to be coated with the detection position of imaging agent and fit closely it and prevents gas leakage, movable core is in electromagnetism
It moves upwards under power control with piston along lower case inner wall upward sliding, it is negative to make to be located at lower case inside formation below piston
It presses, the bleeding agent in the Surface-breaking defect of detection position is bled back in imaging agent.
To optimize above-mentioned technical proposal, the measure taken further include:
The Nut column that above-mentioned piston includes piston crown, is fixed on piston crown end face, the lower end of movable core and nut
Male screw connection.
Above-mentioned upper housing is provided with shift button, and shift button can change electromagnetic coil group by controlling the size of electric current
The strong and weak control movable core displacement of part magnetic force, there are five gear, the first gears to fifth speed position to respectively correspond control for shift button
Current capacity processed is A1 to A5.
Seal groove is offered on above-mentioned piston crown, the seal groove is embedded to be formed with sealing ring, the periphery of sealing ring
It seals and cooperates with the inner wall of lower case.
The lower end of above-mentioned lower case is provided with sealing ring, sealing ring upper end downwards concave shape at connector, lower case
Lower end be inlaid in connector.
Above-mentioned sealing ring lower end extends outward to form annular edge.
Above-mentioned lower case is made of transparent material.
The outer wall of above-mentioned upper housing is provided with heat release hole.
A circle convex ring body is provided on the lower section inner wall of above-mentioned lower case.
The upper surface of above-mentioned coil rack is provided with connecting hole, and connecting hole is provided with electric mortiser piece, electric mortiser piece and enameled wire
Winding is electrically connected.
Compared with prior art, of the invention for bleeding agent aspiration device during Liquid penetrant testing, including upper housing, under
Shell and electromagnetic coil assembly, lower case are connected to upper housing lower end, are provided in lower case and glide along lower case inner wall
Dynamic piston is provided with battery unit and electromagnetic coil assembly in upper housing, switch is provided on upper housing, battery unit is opened
It closing and electromagnetic coil assembly electrical connection, electromagnetic coil assembly includes coil rack, enamel-cover line winding group, static iron core, movable core,
Enamel-cover line winding group is wound on coil rack, and static iron core is fixed on the upper end of coil rack, is provided with active iron in coil rack
The lower end of core, the movable core is fixedly connected with the piston, and is arranged with spring outside the lower part of movable core, the upper end of the spring and line
Ring framework offsets, and lower end offsets with piston;Lower case bottom is against and is coated with the detection position of imaging agent and pastes it closely
Conjunction prevents gas leakage, and movable core moves upwards under electromagnetic force control with piston along lower case inner wall upward sliding, makes position
Lower case inside forms negative pressure below piston, and the bleeding agent in the Surface-breaking defect of detection position is bled back in imaging agent,
It is easy to operate, by applying negative pressure to bleeding agent, accelerates the bleeding agent in Surface-breaking defect to bleed back in imaging agent, reduce and seep
Detection is influenced by temperature degree thoroughly, effectively saves detection time, improves detection reliability, while improving working efficiency, this
Invention is suitable for the more smooth checking matter in surface.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention;
Fig. 2 is structure sectional view of the invention;
Fig. 3 is coil skeleton structure cross-sectional view of the invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 to Fig. 3 show structural schematic diagram of the invention.
Appended drawing reference therein are as follows: upper housing 1, battery unit 11, switch 12, shift button 13, lower case 2, convex ring body
21, electromagnetic coil assembly 3, coil rack 31, enamel-cover line winding group 32, static iron core 33, movable core 34, spring 35, electric mortiser piece 36,
Piston 4, piston crown 41, Nut column 42, sealing ring 43, sealing ring 5, annular edge 51, heat release hole 6.
It is as shown in Figure 1 to Figure 3:
For bleeding agent aspiration device during Liquid penetrant testing, including upper housing 1, lower case 2 and electromagnetic coil assembly 3, under
Shell 2 is connected to 1 lower end of upper housing, is provided with the piston 4 slided up and down along 2 inner wall of lower case in lower case 2, in upper housing 1
It is provided with battery unit 11 and electromagnetic coil assembly 3, battery unit 11 is rechargeable storage battery, battery unit 11 is provided with+
Electrode earth plate and-electrode earth plate are set on upper housing 1 for the electric energy of battery unit 11 to be supplied to electromagnetic coil assembly 3
It is equipped with switch 12, battery unit 11, switch 12 and electromagnetic coil assembly 3 are electrically connected, the on-off of 12 control circuit of switch, upper casing
It is additionally provided with charhing unit on body 1, is electrically connected with battery unit 11, therefore battery unit 11 can pass through the external powers such as household electric
It charges, then electric power needed for other components supply internally, electromagnetic coil assembly 3 includes coil rack 31, enamel-cover
Line winding group 32, static iron core 33, movable core 34, enamel-cover line winding group 32 are wound on coil rack 31, and static iron core 33 is soft magnetism material
Material is made, and forms electromagnet after the energization of enamel-cover line winding group 32, so as to move up or down movable core 34, static iron core
33 are fixed on the upper end of coil rack 31, movable core 34 are provided in coil rack 31, the lower end of the movable core 34 and work
Plug 4 is fixedly connected, and spring 35 is arranged with outside the lower part of movable core 34, and upper end and the coil rack 31 of the spring 35 offset,
Lower end offsets with piston 4, and when not being powered to electromagnetic coil assembly 3, piston 4 is located at 2 inside lower section of lower case;By lower case 2
Bottom, which is against the detection position for being coated with imaging agent and fits closely it, prevents gas leakage, by switch 12 by the electricity of battery unit 11
Can be supplied to electromagnetic coil assembly 3, movable core 34 moved upwards under electromagnetic force control and with piston 4 along lower case 2
Wall upward sliding makes to form negative pressure, the infiltration in the Surface-breaking defect of detection position inside 4 lower section lower case 2 of piston
Agent is bled back in imaging agent, by applying negative pressure to bleeding agent, the bleeding agent in Surface-breaking defect is accelerated to bleed back to imaging agent
In, reduce Liquid penetrant testing and be influenced by temperature degree, effectively save detection time, improves detection reliability, while improving work
Make efficiency, the present invention is suitable for the more smooth checking matter in surface.
In embodiment, piston 4 includes piston crown 41, the Nut column 42 being fixed on 41 end face of piston crown, active iron
The lower end of core 34 is threadedly coupled with Nut column 42.
In embodiment, upper housing 1 is provided with shift button 13, shift button 13 and battery unit 11, switch 12 and electricity
Magnetic coil assemblies 3 are electrically connected, and shift button 13 can change the strong and weak control of 3 magnetic force of electromagnetic coil assembly by the size of control electric current
Movable core 34 processed is displaced, and there are five gear, the first gears to fifth speed position to respectively correspond control current capacity for shift button 13
For A1 to A5, multi gear position can adapt to the workpiece of unlike material, and optimal gear can be selected to be operated.
In embodiment, seal groove is offered on piston crown 41, the seal groove is embedded to be formed with sealing ring 43, sealing ring
43 periphery and the inner wall of lower case 2 seal and cooperate, and prevent gas leakage.
In embodiment, the lower end of lower case 2 is provided with sealing ring 5,5 upper end of sealing ring downwards concave shape at connector,
The lower end of lower case 2 is inlaid in connector, and 2 bottom of lower case, which can be fitted tightly over detection position surface, prevents gas leakage.
In embodiment, 5 lower end of sealing ring extends outward to form annular edge 51, prevent extraneous gas from 2 bottom of lower case into
Enter.
In embodiment, lower case 2 is made of transparent material, if transparent plastic is made, convenient for observing the surface of detection position
Bleeding agent in flaws bleeds back situation.
In embodiment, the outer wall of upper housing 1 is provided with heat release hole 6, can radiate to electromagnetic coil assembly 3.
In embodiment, a circle convex ring body 21 is provided on the lower section inner wall of lower case 2, switch 12 is to down circuitry, bullet
Spring stops moving when 4 lower end of piston and convex ring body 21 offset because restoring force band piston 4 moves down, one circle of setting on convex ring body 21
The rubber pad of buffer function is played, convex ring body 21 can stop 4 lower end surface of piston to contact with imaging agent.
In embodiment, the upper surface of coil rack 31 is provided with connecting hole, and connecting hole is provided with electric mortiser piece 36, electric mortiser piece 36
It is electrically connected with enamel-cover line winding group 32, electric mortiser piece 36 is convenient to be connect with other circuit elements.
Working principle:
The sealing ring 5 of 2 bottom of lower case is against to be coated with the detection position of imaging agent and fit closely it and prevents gas leakage, will be become
Shelves button 13, which is adjusted, arrives lowest gear A1, the electric energy of battery unit 11 is supplied to electromagnetic coil assembly 3 by switch 12, activity
Iron core 34 moves upwards under electromagnetic force control with piston 4 along 2 inner wall upward sliding of lower case, makes to be located at 4 lower section of piston
Negative pressure is formed inside lower case 2, the bleeding agent observed in the Surface-breaking defect of detection position bleeds back situation, by adjusting shift
13 gear of button bleeds back to bleeding agent acceleration in imaging agent.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (10)
1. for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: including upper housing (1), lower case (2) and electricity
Magnetic coil assemblies (3), the lower case (2) are connected to upper housing (1) lower end, are provided in the lower case (2) along lower case
(2) piston (4) that inner wall slides up and down, the upper housing (1) is interior to be provided with battery unit (11) and the electromagnetic coil assembly
(3), it is provided with switch (12) on the upper housing (1), the battery unit (11), switch (12) and electromagnetic coil assembly
(3) it is electrically connected, the electromagnetic coil assembly (3) includes coil rack (31), enamel-cover line winding group (32), static iron core (33), activity
Iron core (34), the enamel-cover line winding group (32) are wound on the coil rack (31), and the static iron core (33) is fixed on described
The upper end of coil rack (31), the coil rack (31) is interior to be provided with movable core (34), the lower end of the movable core (34)
It is fixedly connected with the piston (4), is arranged with spring (35) outside the lower part of the movable core (34), the upper end of the spring (35)
It offsets with the coil rack (31), lower end offsets with the piston (4);Lower case (2) bottom is against and is coated with imaging agent
Detection position and it is fitted closely prevent gas leakage, the movable core (34) moves upwards under electromagnetic force control and is driven
Piston (4) makes to be located at the internal formation negative pressure of lower case (2), test section below piston (4) along lower case (2) inner wall upward sliding
Bleeding agent in the Surface-breaking defect of position is bled back in imaging agent.
2. it is according to claim 1 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the piston
It (4) include piston crown (41), the Nut column (42) that is fixed on piston crown (41) end face, under the movable core (34)
End is threadedly coupled with the Nut column (42).
3. it is according to claim 2 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the upper housing
(1) it is provided with shift button (13), the shift button (13) can change electromagnetic coil assembly (3) by the size of control electric current
Strong and weak control movable core (34) displacement of magnetic force, there are five gear, the first gears to fifth speed position for the shift button (13)
Respectively corresponding control current capacity is A1 to A5.
4. it is according to claim 3 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the piston head
Portion offers seal groove on (41), and the seal groove is embedded to be formed with sealing ring (43), the periphery of the sealing ring (43) and institute
State the inner wall sealing cooperation of lower case (2).
5. it is according to claim 4 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the lower case
(2) lower end is provided with sealing ring (5), sealing ring (5) upper end downwards concave shape at connector, the lower case (2)
Lower end be inlaid in the connector.
6. it is according to claim 5 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the sealing ring
(5) lower end extends outward to form annular edge (51).
7. it is according to claim 6 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the lower case
(2) it is made of transparent material.
8. it is according to claim 7 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the upper housing
(1) outer wall is provided with heat release hole (6).
9. it is according to claim 8 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the lower case
(2) a circle convex ring body (21) is provided on lower section inner wall.
10. it is according to claim 9 for bleeding agent aspiration device during Liquid penetrant testing, it is characterized in that: the coil
The upper surface of skeleton (31) is provided with connecting hole, and the connecting hole is provided with electric mortiser piece (36), the electric mortiser piece (36) with it is described
Enamel-cover line winding group (32) is electrically connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811336983.0A CN109187572B (en) | 2018-11-12 | 2018-11-12 | Osmotic agent suction device used in osmotic detection process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811336983.0A CN109187572B (en) | 2018-11-12 | 2018-11-12 | Osmotic agent suction device used in osmotic detection process |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109187572A true CN109187572A (en) | 2019-01-11 |
CN109187572B CN109187572B (en) | 2020-11-20 |
Family
ID=64938734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811336983.0A Active CN109187572B (en) | 2018-11-12 | 2018-11-12 | Osmotic agent suction device used in osmotic detection process |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109187572B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111957362A (en) * | 2020-08-13 | 2020-11-20 | 温州市人民医院 | Sample sucking device in batches |
CN113588174A (en) * | 2021-08-04 | 2021-11-02 | 福建南平南孚电池有限公司 | Method for detecting sealing performance of battery |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09218167A (en) * | 1996-02-13 | 1997-08-19 | Hitachi Ltd | Liquid penetration detecting method and device |
CN105697292A (en) * | 2016-01-24 | 2016-06-22 | 徐園植 | Environmental protection vacuumizing device |
CN105715497A (en) * | 2016-01-24 | 2016-06-29 | 徐園植 | Energy-saving air exhausting device |
-
2018
- 2018-11-12 CN CN201811336983.0A patent/CN109187572B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09218167A (en) * | 1996-02-13 | 1997-08-19 | Hitachi Ltd | Liquid penetration detecting method and device |
CN105697292A (en) * | 2016-01-24 | 2016-06-22 | 徐園植 | Environmental protection vacuumizing device |
CN105715497A (en) * | 2016-01-24 | 2016-06-29 | 徐園植 | Energy-saving air exhausting device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111957362A (en) * | 2020-08-13 | 2020-11-20 | 温州市人民医院 | Sample sucking device in batches |
CN113588174A (en) * | 2021-08-04 | 2021-11-02 | 福建南平南孚电池有限公司 | Method for detecting sealing performance of battery |
Also Published As
Publication number | Publication date |
---|---|
CN109187572B (en) | 2020-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109115797A (en) | For bleeding agent aspiration device during weld seam Liquid penetrant testing | |
CN109187572A (en) | For bleeding agent aspiration device during Liquid penetrant testing | |
CN109142385B (en) | Device for accelerating permeation of penetrant by pressurization and operation method thereof | |
KR200492382Y1 (en) | Dual Type Magnetic Particle Detection Inspection System | |
CN111868494A (en) | Inspection device and inspection method for inspecting three-way valve device for leakage | |
CN109580113B (en) | Detection apparatus for whether short-term test cylinder cap seepage is | |
CN103033317B (en) | Testing tool of air cylinder end cover | |
CN205787009U (en) | A kind of PCBA tests device | |
CN106052972A (en) | Bearing air leakage detection tool and bearing air leakage detection device comprising same | |
CN108593281B (en) | A kind of Intelligent well underground metal sealing experimental provision | |
CN109115796A (en) | A kind of pressurized equipment accelerating bleeding agent infiltration | |
CN204882458U (en) | Magnetic particle inspection appearance with automatic spray function | |
CN211121832U (en) | Dry type automatic leakage detector for diesel engine body | |
CN210487193U (en) | Device for detecting air leakage in target piece production process | |
CN106246904A (en) | A kind of fluid drive gear box controls electromagnetic valve | |
CN110455912B (en) | Method for detecting surface dent of valve body | |
CN206320259U (en) | A kind of differential assembly axle alignment pin neglected loading error prevention device | |
CN213779382U (en) | Power battery sealing leak detector | |
CN214667495U (en) | Grinding head air tightness leakage detection equipment for wafer polishing | |
CN106769310B (en) | A kind of scene metallurgic replica verifying attachment | |
CN213091072U (en) | Air tightness testing mechanism | |
CN209132150U (en) | A kind of giant salamander Skin mucus component detection apparatus | |
TWI802381B (en) | Gas positive and negative pressure detection device and detection method for water filter element | |
CN109060082A (en) | Water level sensor air-tightness detection device and its detection method | |
CN108692879A (en) | Filter end part seal detection method easy to operate |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230426 Address after: 525000 Hengxiang, No. 80 Changqian West Road, Maoming City, Guangdong Province Patentee after: Maoming Weite Testing Technology Co.,Ltd. Address before: 315043 Junyue garden, No. 881, Baizhang East Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: Lu Le |