CN110388453A - A kind of thermometric oil discharge screw and the temperature measuring equipment containing the bolt - Google Patents
A kind of thermometric oil discharge screw and the temperature measuring equipment containing the bolt Download PDFInfo
- Publication number
- CN110388453A CN110388453A CN201910776457.4A CN201910776457A CN110388453A CN 110388453 A CN110388453 A CN 110388453A CN 201910776457 A CN201910776457 A CN 201910776457A CN 110388453 A CN110388453 A CN 110388453A
- Authority
- CN
- China
- Prior art keywords
- discharge screw
- oil discharge
- oil
- installation cavity
- temperature measuring
- 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
- 238000009434 installation Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 67
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 8
- 239000010705 motor oil Substances 0.000 abstract description 7
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/04—Filling or draining lubricant of or from machines or engines
- F01M11/0408—Sump drainage devices, e.g. valves, plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0408—Exchange, draining or filling of transmission lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/04—Filling or draining lubricant of or from machines or engines
- F01M11/0408—Sump drainage devices, e.g. valves, plugs
- F01M2011/0416—Plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
- F01M2011/14—Indicating devices; Other safety devices for indicating the necessity to change the oil
- F01M2011/1473—Indicating devices; Other safety devices for indicating the necessity to change the oil by considering temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of thermometric oil discharge screw and containing the temperature measuring equipment of the bolt, in particular to a kind of temperature measuring equipment for capableing of real-time monitoring engine oil and gear-box lubricating oil oil temperature belongs to technical field of engines.The oil discharge screw is the stud for being radially equipped with class flange arrangement, inner cylinder and outer-hexagonal head including being located at flange arrangement two sides.The oil discharge screw is axially arranged with the variable cross-section mount type chamber of perforation oil discharge screw along oil discharge screw.It is oil suction chamber in inner cylinder middle front part, is installation cavity at outer hexagon-head center, installation cavity is connected to oil suction chamber by being tightly connected chamber.Meanwhile the present invention also provides the temperature measuring equipments containing the oil discharge screw.The temperature measuring equipment has many advantages, such as that structure is simple, easy to use, by wireless measurement technology, can be realized real-time measurement, real-time Transmission substantially reduces measurement difficulty, has both been able to satisfy the requirement of experimental test, while being also able to satisfy the requirement during automobile routine use.
Description
Technical field
The present invention relates to a kind of thermometric oil discharge screw and containing the temperature measuring equipment of the bolt, in particular to one kind can be real
When monitor engine oil and gear-box lubricating oil oil temperature temperature measuring equipment, belong to technical field of engines.
Background technique
Cylinder oil is known as engine oil, and gearbox is known as gear box oil, engine oil and speed change with lubricating oil
Case oil is the key factor for influencing engine friction loss and oil consumption, and oil temperature has engine oil/gear box oil performance
Very big influence, so carrying out observing and controlling with extremely important to the oil temperature during the vehicle or experimental test in driving process
Meaning.
Engine/gearbox overall test is to verify the important means of engine/gearbox design, the test of overall test
Period is long, at high cost, but the actual condition of closer work.During test, lubricating oil temperature is the data of real-time monitoring, can
There are preferable simulation, while the reliability of guarantee test with guarantee test and actual condition.The test of vehicle rank is from being
Verifying components measure oil temperature in driving process, Ke Yiwei in the reliability and durability of vehicle in integrated level of uniting
Oil temperature data is shown and engine/gearbox reliability service provides data and supports.
Currently, either overall test or complete vehicle test, oil temperature data measurement is required to the progress of specific placement sensor
Measurement, and temperature data is sent to signal receiving device using signal transmssion line simultaneously.Temperature is carried out using signal transmssion line
During the transmission of data may be only available for experimental test, the oil temperature that can not be applied in automobile normal use process is monitored.
Summary of the invention
For solve the problems, such as available engine oil and gearbox lubrication oil temperature can not real-time monitoring, the present invention provides
A kind of oil discharge screw being exclusively used in thermometric and the temperature measuring equipment containing the oil discharge screw, the technical solution taken are as follows:
A kind of thermometric oil discharge screw, be in radially be equipped with class flange arrangement stud, including be located at flange knot
The inner cylinder of structure two sides and outer-hexagonal head；The oil discharge screw is axially arranged with the variable cross-section of perforation oil discharge screw along oil discharge screw
Mount type chamber；It is oil suction chamber 33 in the inner cylinder middle front part；It is installation cavity 35 in the outer-hexagonal head center；The peace
Behave affectedly 35 with oil suction chamber 33 by be tightly connected chamber be connected to.
Preferably, the outer peripheral surface of the inner cylinder is equipped with oil discharge screw external screw thread 31.
Preferably, the sealed connection chamber is equipped with internal screw thread.
Preferably, the diameter of the oil suction chamber 33 and installation cavity 35 is greater than the diameter for being tightly connected chamber.
It is highly preferred that the oil suction chamber 33 is connected to sealed connection chamber by the convergent part 34 of truncated cone-shaped.
Preferably, the annular groove for mounting O-shaped rings 6 is equipped with towards inner cylinder side in flange arrangement.
A kind of temperature measuring equipment containing any of the above oil discharge screw, the temperature measuring equipment include being installed on the oil discharge screw 3
Temperature measurement component 7 in interior sealing installation cavity and installation cavity 35；The temperature measurement component includes temperature sensor 71, signal processing module
72, signal emission module 73 and power supply module 74；The 71 temperature sensing end of temperature sensor is fixedly connected on sealing installation cavity
Front is contacted with oil suction chamber 33；72 front of signal processing module is fixedly connected with temperature sensor 71, and rear portion and signal are sent out
It penetrates module 73 to be fixedly connected, side is tightly connected by the internal screw thread of the external screw thread and sealing installation cavity that are equipped with sealant；It is described
Signal emission module 73 connect with power supply module 74 and is located in the installation cavity 35.
Preferably, the signal processing module 72 is equipped with the cylindrical shell body being cooperatively connected with sealing installation cavity, installation
In the signal amplifier and digital analog converter of interior of shell；Wireless communication controller is equipped in the signal emission module 73；Institute
It states power supply module 74 and the wireless communication controller, digital analog converter, signal amplifier and temperature sensor is electrically connected.
Preferably, the wireless communication controller realizes wireless telecommunications by bluetooth.
Preferably, the temperature measuring equipment further include the signal receiving device being connect with signal emission module 73 by signal and
Signal output and display device.
Compared with the existing technology, what the present invention obtained has the beneficial effect that:
Temperature measuring equipment of the invention does not need to be compared original structure big change, has structure simple, user
Just the advantages of.Oil discharge screw and temperature measurement component are integrated, using wireless measurement technology, can be realized real-time measurement,
Real-time Transmission, substantially reduces measurement difficulty, has both been able to satisfy the requirement of experimental test, while being also able to satisfy automobile routine use process
In requirement.
Detailed description of the invention
Fig. 1 is the positive structure diagram of oil discharge screw in a kind of preferred embodiment of the present invention.
Fig. 2 is oil discharge screw in a kind of preferred embodiment of the present invention along the cross-sectional view of axis (temperature measurement component is not splitted).
Fig. 3 is the positive structure diagram of temperature measurement component in a kind of preferred embodiment of the present invention.
Fig. 4 is the overlooking structure diagram of oil sump.
Fig. 5 is the side structure schematic view of oil sump.
Fig. 6 is the working principle diagram of temperature measuring equipment in a kind of preferred embodiment of the present invention.
Wherein, 1, oil sump；2, connect bolt；3, oil discharge screw；4, link block；5, sealing surface；6, O-ring；7, thermometric
Component；31, oil discharge screw external screw thread；32, outer-hexagonal head；33, oil suction chamber；34, convergent part；35, installation cavity；71, temperature passes
Sensor；72, signal processing module；73, signal emission module；74, power supply module.
Specific embodiment
The present invention in following description, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The indicating positions such as "front", "rear", "left", "right", "top", "bottom", "inner", "outside" and " endways " or positional relationship are based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, it is thus impossible to be interpreted as to of the invention
Limitation.
The present invention in following description, it should be noted that unless otherwise expressly provided and limit, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be and be directly connected to, be also possible to be indirectly connected with by intermediate medium, can be the connection of two components interiors.For
For those skilled in the art, it can be concrete condition and understand the concrete meaning of term in the present invention of submitting a written statement to a higher authority.
In addition, the present invention in following description, unless otherwise indicated, " multiple ", " multiple groups ", " more " are meant that two
It is a or more than two.
Following embodiment material therefor, reagent, device, equipment, method and control process are this without specified otherwise
Field common material, reagent, device, equipment, method and control process, those skilled in the art can be obtained by commercial channel
, or conventional arrangement is carried out according to specific needs, without involving an inventive effort.
The present invention will be further described combined with specific embodiments below, but the present invention should not be limited by the examples.
Fig. 1 is the positive structure diagram of oil discharge screw in a kind of preferred embodiment of the present invention.From fig. 1, it can be seen that this is put
Oil draining bolt is the stud structure that middle part is radially equipped with flange arrangement.Wherein, bottom is outer-hexagonal head 32, and top is
Inner cylinder.It is equipped with oil discharge screw external screw thread 31, on the periphery of inner cylinder in order to be attached with oil sump 1.Together
When, sealing O-ring 6 is embedded with by annular groove in flange arrangement inner cylinder side.
Fig. 2 is oil discharge screw in a kind of preferred embodiment of the present invention along the cross-sectional view of axis (temperature measurement component is not splitted).
As can be seen from Figure 2, in the middle part of the oil discharge screw 3 be equipped with completely through variable cross-section mount type chamber.The mount type chamber mainly has top circle
Cylindrical oil suction chamber 33,33 bottom of oil suction chamber are in the convergent part 34 for leading to truncated cone-shaped, the installation cavity 35 positioned at bottom, and connection
The sealed connection chamber of installation cavity 35 and convergent part 34.Being tightly connected chamber is cylinder, and inner wall is equipped with internal screw thread and is installed in it
Temperature measurement component (shown in virtual coil) external screw thread cooperate be tightly connected.Meanwhile the internal diameter of oil suction chamber 33 and installation cavity 35
Almost the same, the internal diameter for sealing installation cavity is much smaller than the internal diameter of oil suction chamber 33 and installation cavity 35.
Fig. 3 is the positive structure diagram of temperature measurement component in a kind of preferred embodiment of the present invention.As can be seen from Figure 3, the survey
Warm component by be located at top temperature sensor 71, positioned at temperature sensor 71 signal processing module 72, be located at signal processing
The signal emission module 73 of 72 bottom of module, and the power supply module 74 positioned at 73 bottom of signal emission module.Wherein, at signal
It manages module 72 and is equipped with an elongated cylindrical outer housing, be equipped with signal amplifier and digital analog converter, the letter of bottom inside the shell
Number transmitting module is the communication controller for passing through bluetooth wireless transmission signal.The power supply module 74 of bottommost and above-mentioned temperature sensing
Device, signal amplifier, digital analog converter and communication controller are electrically connected, to be powered for above-mentioned component.Wherein, warm
Spending sensor can be K-type thermocouple, and signal amplifier is TLV9061 microminiature operational amplifier；Digital analog converter is 12 DAC
Chip MCP4725；Wireless communication module is ASK/FSK radio receiving transmitting module；Power supply module is that PAM8403D power supply power supply is miniature
Digital power amplifier module.As for the physical circuit connection type of above-mentioned module, those skilled in the art can from the description above, specifically
Working condition requirement and common knowledge carry out conventional arrangement.
Fig. 4 is the overlooking structure diagram of oil sump.Fig. 5 is the side structure schematic view of oil sump.It can from Fig. 4 and Fig. 5
Know, oil discharge screw is located at the bottom of oil sump 1, is multiple connection bolts 2,1 top edge surface of oil sump on the top of oil sump 1
For sealing surface.Oil discharge screw 3 is fixedly connected by link block 4 with oil sump 1, in order to measure oil sump inner engine oil or lubricating oil
Temperature.
Fig. 6 is the working principle diagram of temperature measuring equipment in a kind of preferred embodiment of the present invention.As can be seen from Figure 6, temperature sensing
After 71 thermometric harvest temperature signal of device, by signal amplification and digital-to-analogue conversion, digital quantity is converted the electrical signal to, is controlled via communication
Device (signal processing module) processed and bluetooth BLE (signal emission module 73) launch, and in signal receiving end, are connect by bluetooth BLE
The collection of letters number, then data processing is carried out, can finally there be data-interface to export or show, from the reality realized to oil temperature in oil sump
When monitor.
Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the invention, any to be familiar with this
The people of technology can do various changes and modification, therefore protection of the invention without departing from the spirit and scope of the present invention
Range should subject to the definition of the claims.
Claims (10)
1. a kind of thermometric oil discharge screw, be in be radially equipped with the stud of class flange arrangement, including be located at flange arrangement
The inner cylinder of two sides and outer-hexagonal head；It is characterized in that, being axially arranged with the variable cross-section of perforation oil discharge screw along oil discharge screw
Mount type chamber；It is oil suction chamber (33) in the inner cylinder middle front part；It is installation cavity (35) in the outer-hexagonal head center；Institute
It states installation cavity (35) and is connected to oil suction chamber (33) by being tightly connected chamber.
2. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that on the outer peripheral surface of the inner cylinder
Equipped with oil discharge screw external screw thread (31).
3. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that the sealed connection chamber is equipped with interior spiral shell
Line.
4. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that the oil suction chamber (33) and installation cavity
(35) diameter is greater than the diameter for being tightly connected chamber.
5. a kind of thermometric oil discharge screw according to claim 4, which is characterized in that the oil suction chamber (33) and sealing connect
Chamber is connect to be connected to by the convergent part (34) of truncated cone-shaped.
6. a kind of thermometric oil discharge screw according to claim 1, which is characterized in that in flange arrangement towards inner cylinder
Side is equipped with the annular groove for mounting O-shaped rings (6).
7. a kind of temperature measuring equipment containing any oil discharge screw of claim 1-6, which is characterized in that described including being installed on
Temperature measurement component (7) in oil discharge screw (3) in sealing installation cavity and installation cavity (35)；The temperature measurement component includes temperature sensor
(71), signal processing module (72), signal emission module (73) and power supply module (74)；Temperature sensor (71) temperature is visited
Survey end is fixedly connected on sealing installation cavity front and contacts with oil suction chamber (33)；Signal processing module (72) front and temperature pass
Sensor (71) is fixedly connected, and rear portion is fixedly connected with signal emission module (73), side by be equipped with sealant external screw thread with
The internal screw thread for sealing installation cavity is tightly connected；The signal emission module (73) connect with power supply module (74) and is located at the peace
It behave affectedly in (35).
8. temperature measuring equipment according to claim 7, which is characterized in that the signal processing module (72) is equipped with pacifies with sealing
It behave affectedly the cylindrical shell body of mating connection, is installed on the signal amplifier and digital analog converter of interior of shell；The signal hair
It penetrates and is equipped with wireless communication controller in module (73)；The power supply module (74) and the wireless communication controller, digital-to-analogue conversion
Device, signal amplifier and temperature sensor are electrically connected.
9. temperature measuring equipment according to claim 7, which is characterized in that the wireless communication controller realizes nothing by bluetooth
Line communication.
10. temperature measuring equipment according to claim 7, which is characterized in that further include passing through letter with signal emission module (73)
Number connection signal receiving device and signal output and display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776457.4A CN110388453A (en) | 2019-08-22 | 2019-08-22 | A kind of thermometric oil discharge screw and the temperature measuring equipment containing the bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776457.4A CN110388453A (en) | 2019-08-22 | 2019-08-22 | A kind of thermometric oil discharge screw and the temperature measuring equipment containing the bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388453A true CN110388453A (en) | 2019-10-29 |
Family
ID=68289166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910776457.4A Pending CN110388453A (en) | 2019-08-22 | 2019-08-22 | A kind of thermometric oil discharge screw and the temperature measuring equipment containing the bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388453A (en) |
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|---|---|---|---|---|
| KR20040046715A (en) * | 2002-11-28 | 2004-06-05 | 현대자동차주식회사 | A device for mounting temperature sensor in engine oil pan for automobile |
| CN101793566A (en) * | 2010-02-26 | 2010-08-04 | 江苏镇安电力设备有限公司 | Temperature-measuring bolt |
| CN202732034U (en) * | 2012-07-16 | 2013-02-13 | 安徽天利动力股份有限公司 | Oil drain plug with temperature sensor |
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| CN104989490A (en) * | 2015-08-06 | 2015-10-21 | 张得飞 | Respiration type oil-discharging plug screw assembly |
| DE102015112608A1 (en) * | 2014-08-01 | 2016-02-04 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Systems with thermoelectrically operated wireless vehicle system sensor |
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| DE102015213741A1 (en) * | 2015-07-21 | 2017-03-09 | Zf Friedrichshafen Ag | Intelligent oil drain plug |
| CN107763123A (en) * | 2017-10-26 | 2018-03-06 | 安徽农业大学 | A kind of temperature-measuring bolt for being used to measure vehicle brake fluid temperature |
| CN207248370U (en) * | 2017-07-24 | 2018-04-17 | 江道康 | Temperature measuring equipment and the liquid container using the temperature measuring equipment |
| CN210484580U (en) * | 2019-08-22 | 2020-05-08 | 河南科技学院 | Oil drainage bolt for temperature measurement and temperature measuring device with same |
-
2019
- 2019-08-22 CN CN201910776457.4A patent/CN110388453A/en active Pending
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| CN104989490A (en) * | 2015-08-06 | 2015-10-21 | 张得飞 | Respiration type oil-discharging plug screw assembly |
| CN207248370U (en) * | 2017-07-24 | 2018-04-17 | 江道康 | Temperature measuring equipment and the liquid container using the temperature measuring equipment |
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