CN107036931A - A kind of apparatus and method of strength of fluid measurement - Google Patents
A kind of apparatus and method of strength of fluid measurement Download PDFInfo
- Publication number
- CN107036931A CN107036931A CN201710389107.3A CN201710389107A CN107036931A CN 107036931 A CN107036931 A CN 107036931A CN 201710389107 A CN201710389107 A CN 201710389107A CN 107036931 A CN107036931 A CN 107036931A
- Authority
- CN
- China
- Prior art keywords
- fluid
- chamber
- liquid
- casing
- strength
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 57
- 238000005259 measurement Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000006073 displacement reaction Methods 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 241000606750 Actinobacillus Species 0.000 claims abstract description 24
- 239000011521 glass Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/10—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials
- G01N9/12—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers
- G01N9/14—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers the body being built into a container
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 Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of apparatus and method of strength of fluid measurement, including case lid, actinobacillus device, support, unit weight, casing, testing liquid, bottom, control display, fluid level measuring gauge, fluid chamber, replace chamber, horizontal measuring instrument, discharge water valve port, the inside of the casing sets fluid chamber and displacement chamber, dividing plate is provided between the fluid chamber and displacement chamber, the fluid chamber upper side wall is provided with support, and one end of support is provided with actinobacillus device, unit weight is provided with below the actinobacillus device, and unit weight is connected with actinobacillus device by glass wire, testing liquid is placed in the fluid chamber.The liquid concentration measuring device that the present invention is designed is rational in infrastructure easy to use, it is easy to the measurement of concetration of the different liquid of correspondence, device is applied to different strength of fluids from different material manufactures and detected, fixed based on Archimedes, to judge and calculate automatically the concentration of liquid.
Description
Technical field
The present invention relates to strength of fluid measuring method；It is specifically a kind of liquid the present invention also relates to liquid concentration measuring device
The apparatus and method of measurement of concetration.
Background technology
The concentration concept of broad sense refers to the amount of solute in a certain amount of solution or solvent；This general concentration concept erect image
The concept of " amount " is equally without clear and definite implication；Traditionally, the solution that concentration is related to measures volume, and the amount of solution then often takes matter
Amount, and the amount of solute then takes the amount, quality, volume of material, and cost height is there is in existing liquid concentration measuring device,
It is inconvenient for use, the use of school and other small research mechanisms is not easy to, measuring method is cumbersome, is not easy to layman behaviour
Make.
The content of the invention
It is an object of the invention to provide a kind of apparatus and method of strength of fluid measurement, to solve survey of the prior art
The shortcomings of complex steps device production cost height is using production inconvenience is measured, measuring method is cumbersome, be not easy to layman's operation.
To achieve the above object, the present invention provides following technical scheme：
A kind of device of strength of fluid measurement, including case lid, actinobacillus device, support, unit weight, casing, testing liquid, case
Bottom, control display, fluid level measuring gauge, fluid chamber, displacement chamber, horizontal measuring instrument, discharged water valve port, and the inside of the casing is set
Fluid chamber and displacement chamber, are provided with dividing plate, the fluid chamber upper side wall is provided with support between the fluid chamber and displacement chamber,
And one end of support is provided with below actinobacillus device, the actinobacillus device and is provided with unit weight, and unit weight and unwrapping wire
Device is connected by glass wire, is placed in the fluid chamber and is provided with case lid, and case at the top of testing liquid, the casing
The bottom of body, which is provided with bottom, the bottom, is provided with horizontal measuring instrument, and liquid level survey is provided with the side wall of the displacement chamber
Instrument is measured, and the bottom of displacement chamber is provided with the valve port that discharges water, the outer wall of the displacement chamber is provided with control display.
It is preferred that, pressure sensitive device is provided with the outside of the casing, and pressure sensitive device passes through with actinobacillus device
Glass wire is connected.
It is preferred that, the unit weight beyond the region of objective existence portion is provided with integument.
It is preferred that, the casing main body selects clear glass, transparent plastic or alloy material.
It is preferred that, measurement signal special delivery is given on control display, and control display and is provided with by the fluid level measuring instrument
LCDs.
A kind of method of strength of fluid measurement, it is characterised in that selected equipment is the dress that a kind of strength of fluid is measured
Put, using it is preceding will first take out appropriate testing liquid and place contact observation successively respectively at glass, plastics and metal in a reservoir and make
Chemically reacted with wherein material, actively remove the device of correspondence material when from device when chemically reacting,
Suitable casing is selected after the completion of detection, casing is placed on horizontal experimental bench, whether casing is detected by horizontal measuring instrument
In horizontality, open case lid and testing liquid be injected into fluid chamber, testing liquid height is just reached the height of dividing plate,
Unit weight is immersed in liquid downwards by actinobacillus device, the quality of unit weight is fixation m, floating based on Archimedes principle
The buoyancy suffered by object in a liquid is equal to the weight that it discharges liquid
Buoyancy F=mg=pvg；
Testing liquid is drained into displacement intracavitary, is changed by replacing the level gauging automatic measurement liquid level on the wall of chamber side, by liquid level
Change feed back to control display on, displacement chamber bottom surface cross-sectional area be S be definite value then：
F=mg=ρvg=ρS△hg；
ρ=m/S △ h；
The density value ρ of testing liquid can be directly calculated by calculation formula.
Compared with prior art, the beneficial effects of the invention are as follows：The liquid concentration measuring device structure that the present invention is designed is closed
Reason is easy to use, is easy to the measurement of concetration of the different liquid of correspondence, and device is applied to different liquid from different material manufactures
Bulk concentration is detected, fixed based on Archimedes, and to judge and calculate automatically the concentration of liquid, actinobacillus device and pressure sensitive device are sentenced
Whether disconnected unit weight is completely immersed on liquid level, it is to avoid caused because the pulling force of rope makes unit weight not be completely immersed on liquid level
Measurement result is inaccurate, by discharge water valve port can in time by liquid from displacement intracavitary discharge avoid before measuring liquid residue exist
Intracavitary is replaced, causes measuring result error to increase, can be selected to be adapted to the casing of volume size and right according to different amount of liquid
The fluid chamber answered and the size of displacement chamber, are easy to teaching is just now middle to demonstrate Archimedes' principle and in religion by the present apparatus and method
Quick measurement strength of fluid in experiment is learned to be easy to instruction of papil and allow student resource operation experiments.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the device of strength of fluid measurement of the invention；
Fig. 2 is a kind of use schematic diagram of the device of strength of fluid measurement of the invention；
Fig. 3 is a kind of structural representation of the actinobacillus device of the apparatus and method of strength of fluid measurement of the invention.
In figure：1st, case lid；2nd, actinobacillus device；21st, pressure sensitive device；3rd, support；4th, unit weight；5th, casing；6th, treat
Survey liquid；7th, bottom；8th, display is controlled；9th, fluid level measuring gauge；10th, fluid chamber；11st, chamber is replaced；12nd, horizontal measuring instrument；13、
Discharge water valve port.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer in Fig. 1~3, the embodiment of the present invention, a kind of device of strength of fluid measurement, including case lid 1, actinobacillus device
2nd, support 3, unit weight 4, casing 5, testing liquid 6, bottom 7, control display 8, fluid level measuring gauge 9, fluid chamber 10, displacement
Chamber 11, horizontal measuring instrument 12, discharge water valve port 13, and the inside of the casing 5 sets fluid chamber 10 and displacement chamber 11, the fluid chamber
Dividing plate is provided between 10 and displacement chamber 11, the upper side wall of fluid chamber 10 is provided with support 3, and one end of support 3 is set
There is actinobacillus device 2, the lower section of the actinobacillus device 2 is provided with unit weight 4, and unit weight 4 passes through glass with actinobacillus device 2
Single is connected, and testing liquid 6 is placed in the fluid chamber 10, the top of the casing 5 is provided with case lid 1, and the bottom of casing 5
Portion, which is provided with bottom 7, the bottom 7, is provided with horizontal measuring instrument 12, and liquid level survey is provided with the side wall of the displacement chamber 11
Instrument 12 is measured, and the bottom of displacement chamber 11 is provided with the valve port 13 that discharges water, the outer wall of the displacement chamber 11 is provided with control display 8.
The outside of the casing 5 is provided with pressure sensitive device 21, and pressure sensitive device 21 passes through glass with actinobacillus device 2
Glass single is connected, and integument is provided with outside the unit weight 4, by being provided with one layer of integument on unit weight 4
Avoid unit weight from being chemically reacted with testing liquid, be easy to the cleaning of unit weight 4 and avoid unit weight 4 from using process
Middle quality, which changes, causes result of calculation to occur error, during selection unit weight 4 density should be selected to be less than testing liquid close
The unit weight 4 swum on testing liquid liquid level is spent, the main body of casing 5 selects clear glass, transparent plastic or alloy material
Measurement signal special delivery is given on control display 8, and control display 8 and is provided with liquid crystal display by matter, the fluid level measuring instrument 12
Screen.
A kind of method of strength of fluid measurement, selected equipment is the device that a kind of strength of fluid is measured, and uses preceding elder generation
Appropriate testing liquid placement will be taken out and contact observation use and wherein material successively respectively at glass, plastics and metal in a reservoir
Chemically react, actively remove the device of correspondence material when from device when chemically reacting, selected after the completion of detection
Suitable casing 5 is selected, casing 5 is placed on horizontal experimental bench, detects whether casing is in level by horizontal measuring instrument 12
State, opens case lid 1 and testing liquid is injected into fluid chamber 10, testing liquid height is just reached the height of dividing plate, passes through
Actinobacillus device 2 is by unit weight 4 downwards immersion liquid, and the quality of unit weight 4 is fixation m, floating based on Archimedes principle
The buoyancy suffered by object in a liquid is equal to the weight that it discharges liquid
Buoyancy F=mg=pvg；
Testing liquid is drained into displacement chamber 10, is changed by replacing the level gauging automatic measurement liquid level on the side wall of chamber 10, will
Liquid level change feeds back to control display 8 on, displacement chamber 10 bottom surface cross-sectional area be S be definite value then：
F=mg=ρvg=ρS△hg；
ρ=m/S △ h；
The density value ρ of testing liquid can be directly calculated by calculation formula.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Claims (6)
1. a kind of device of strength of fluid measurement, including case lid（1）, actinobacillus device（2）, support（3）, unit weight（4）, casing
（5）, testing liquid（6）, bottom（7）, control display（8）, fluid level measuring gauge（9）, fluid chamber（10）, displacement chamber（11）, water
Flat measuring instrument（12）, discharge water valve port（13）, it is characterised in that the casing（5）Inside set fluid chamber（10）With displacement chamber
（11）, the fluid chamber（10）With displacement chamber（11）Between be provided with dividing plate, the fluid chamber（10）Upper side wall is provided with branch
Frame（3）, and support（3）One end be provided with actinobacillus device（2）, the actinobacillus device（2）Lower section be provided with unit weight
（4）, and unit weight（4）With actinobacillus device（2）Connected by glass wire, the fluid chamber（10）Interior placement testing liquid
（6）, the casing（5）Top be provided with case lid（1）, and casing（5）Bottom be provided with bottom（7）, the bottom（7）On
It is provided with horizontal measuring instrument（12）, the displacement chamber（11）Side wall on be provided with fluid level measuring instrument（12）, and displacement chamber（11）
Bottom be provided with the valve port that discharges water（13）, the displacement chamber（11）Outer wall be provided with control display（8）.
2. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the casing（5）Outside
It is provided with pressure sensitive device（21）, and pressure sensitive device（21）With actinobacillus device（2）Connected by glass wire.
3. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the unit weight（4）Outside
Portion is provided with integument.
4. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the casing（5）Main body is selected
With clear glass, transparent plastic or alloy material.
5. a kind of device of strength of fluid measurement according to claim 1, it is characterised in that the fluid level measuring instrument（12）
Control display is given by measurement signal special delivery（8）, and control display（8）On be provided with LCDs.
6. a kind of method of strength of fluid measurement, it is characterised in that selected equipment is the device that a kind of strength of fluid is measured,
Using it is preceding will first take out appropriate testing liquid place in a reservoir respectively at glass, plastics and metal contact successively observation using with
Wherein material chemically reacts, and actively removes the device of correspondence material, detection when from device when chemically reacting
After the completion of select suitable casing（5）, by casing（5）It is placed on horizontal experimental bench, passes through horizontal measuring instrument（12）Detection case
Whether body is in horizontality, opens case lid（1）Testing liquid is injected into fluid chamber（10）, testing liquid height is just reached
To the height of dividing plate, pass through actinobacillus device（2）By unit weight（4）Downwards in immersion liquid, unit weight（4）Quality be fixed
M is put, its weight for discharging liquid is equal to based on the buoyancy suffered by the floating object in a liquid of Archimedes principle
Buoyancy F=mg=pvg；
Testing liquid is drained into displacement chamber（10）It is interior, by replacing chamber（10）Level gauging automatic measurement liquid level on the wall of side becomes
Change, liquid level change is fed back into control display（8）On, replace chamber（10）Bottom surface cross-sectional area be S be definite value then：
F=mg=ρvg=ρS△hg；
ρ=m/S △ h；
The density value ρ of testing liquid can be directly calculated by calculation formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389107.3A CN107036931A (en) | 2017-05-27 | 2017-05-27 | A kind of apparatus and method of strength of fluid measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389107.3A CN107036931A (en) | 2017-05-27 | 2017-05-27 | A kind of apparatus and method of strength of fluid measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107036931A true CN107036931A (en) | 2017-08-11 |
Family
ID=59539441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389107.3A Pending CN107036931A (en) | 2017-05-27 | 2017-05-27 | A kind of apparatus and method of strength of fluid measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107036931A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459339A (en) * | 2018-11-13 | 2019-03-12 | 佛山市雅洁源科技股份有限公司 | A kind of emulsifying liquid waste water concentration detection apparatus |
| CN109916771A (en) * | 2019-03-18 | 2019-06-21 | 北京工业大学 | A kind of calibration of powder-type 3D printer powder bed density and measuring device |
| CN110354362A (en) * | 2019-08-12 | 2019-10-22 | 杨豪 | The analgesia pump of controlled concentration and its control method of analgesia pump |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453430Y (en) * | 2000-12-18 | 2001-10-10 | 李千山 | Multi-functional electronic density measuring instrument |
| CN202956965U (en) * | 2012-10-24 | 2013-05-29 | 郑州利生科教设备有限公司 | Archimedes principle tester |
| CN203299081U (en) * | 2013-07-01 | 2013-11-20 | 湖南工业大学 | Real-time liquid density measuring instrument |
| CN203397570U (en) * | 2013-09-07 | 2014-01-15 | 叶天云 | Multifunctional Archimedes principle teaching instrument |
| CN204516184U (en) * | 2015-04-14 | 2015-07-29 | 张帅文 | Law of buoyancy apparatus for demonstrating |
| CN204965862U (en) * | 2015-09-16 | 2016-01-13 | 刘国戈 | Appearance is probed to multi -functional buoyancy |
| CN205508221U (en) * | 2016-02-27 | 2016-08-24 | 彭荣荣 | Physical phenomenon presentation device |
| CN106504622A (en) * | 2016-12-30 | 2017-03-15 | 神农架林区实验小学 | The experiment teaching aid of checking Archimedes principle and its using method |
| CN206740576U (en) * | 2017-05-27 | 2017-12-12 | 江苏农牧科技职业学院 | A kind of device of strength of fluid measurement |
-
2017
- 2017-05-27 CN CN201710389107.3A patent/CN107036931A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453430Y (en) * | 2000-12-18 | 2001-10-10 | 李千山 | Multi-functional electronic density measuring instrument |
| CN202956965U (en) * | 2012-10-24 | 2013-05-29 | 郑州利生科教设备有限公司 | Archimedes principle tester |
| CN203299081U (en) * | 2013-07-01 | 2013-11-20 | 湖南工业大学 | Real-time liquid density measuring instrument |
| CN203397570U (en) * | 2013-09-07 | 2014-01-15 | 叶天云 | Multifunctional Archimedes principle teaching instrument |
| CN204516184U (en) * | 2015-04-14 | 2015-07-29 | 张帅文 | Law of buoyancy apparatus for demonstrating |
| CN204965862U (en) * | 2015-09-16 | 2016-01-13 | 刘国戈 | Appearance is probed to multi -functional buoyancy |
| CN205508221U (en) * | 2016-02-27 | 2016-08-24 | 彭荣荣 | Physical phenomenon presentation device |
| CN106504622A (en) * | 2016-12-30 | 2017-03-15 | 神农架林区实验小学 | The experiment teaching aid of checking Archimedes principle and its using method |
| CN206740576U (en) * | 2017-05-27 | 2017-12-12 | 江苏农牧科技职业学院 | A kind of device of strength of fluid measurement |
Non-Patent Citations (1)
| Title |
|---|
| 陈兴 等: "《力学计量 新编计量技术初级教材第2版》", 30 November 2006, 中国计量出版社, pages: 117 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459339A (en) * | 2018-11-13 | 2019-03-12 | 佛山市雅洁源科技股份有限公司 | A kind of emulsifying liquid waste water concentration detection apparatus |
| CN109459339B (en) * | 2018-11-13 | 2024-05-03 | 佛山市雅洁源科技股份有限公司 | Emulsion waste water concentration detection device |
| CN109916771A (en) * | 2019-03-18 | 2019-06-21 | 北京工业大学 | A kind of calibration of powder-type 3D printer powder bed density and measuring device |
| CN109916771B (en) * | 2019-03-18 | 2021-11-05 | 北京工业大学 | Powder bed density calibration and measurement device for powder type 3D printer |
| CN110354362A (en) * | 2019-08-12 | 2019-10-22 | 杨豪 | The analgesia pump of controlled concentration and its control method of analgesia pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107036931A (en) | A kind of apparatus and method of strength of fluid measurement | |
| CN102590479B (en) | River and lake bottom sludge pollutant flux test method and device based on diffusion theory | |
| ITMI20132045A1 (en) | METHOD AND EQUIPMENT FOR MEASURING THE FLOW OF A GASEOUS FLOW | |
| CN206740576U (en) | A kind of device of strength of fluid measurement | |
| CN103344542A (en) | Device for measuring permeability coefficient by variable head method | |
| CN105181579B (en) | A kind of instrument for measuring adhesive force and its application | |
| CN203811456U (en) | Weighing type electric heating digestion device | |
| CN206960400U (en) | A kind of pH meter with automatic calibration and cleaning function | |
| CN206945498U (en) | A kind of full-automatic paper amenities bleeds back system safety testing device | |
| CN211904979U (en) | Foam half-life period measuring equipment for shield | |
| CN102485977B (en) | A kind of etching-cleaning machine for major diameter single crystal dislocation | |
| CN111013829B (en) | Inflation amount detection device of flotation machine | |
| CN107063929B (en) | Device and method for rapidly measuring molecular weight of chitosan | |
| CN207585714U (en) | A kind of automotive oil tank weight-measuring device | |
| CN206711463U (en) | A kind of Middle School Physics pressure intensity testing device | |
| CN202904985U (en) | Air pressure self-suction type acid solution splashing proof galvanic cell | |
| CN208537362U (en) | Show the stage property of the water proof anti-seepage effect of water-repellent paint | |
| CN206250274U (en) | A kind of battery core electrolyte filling system | |
| CN217006003U (en) | Magnetic turning plate liquid level meter | |
| CN206002299U (en) | A kind of floor drain test machine | |
| CN206891892U (en) | A kind of water absorption rate test frock | |
| CN206514909U (en) | A kind of liquid level detection device | |
| CN207066924U (en) | For testing the device of cellulose acetate stoste viscosity | |
| CN216747248U (en) | Powdery material density detection device | |
| CN219320040U (en) | Water permeable brick water permeability coefficient detection equipment |
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 |