CN208255032U - A kind of measuring device of the critical force of water trapping layer glass separation - Google Patents
A kind of measuring device of the critical force of water trapping layer glass separation Download PDFInfo
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- CN208255032U CN208255032U CN201820961282.5U CN201820961282U CN208255032U CN 208255032 U CN208255032 U CN 208255032U CN 201820961282 U CN201820961282 U CN 201820961282U CN 208255032 U CN208255032 U CN 208255032U
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- rotating platform
- bottom plate
- pedestal
- slide
- measuring device
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Abstract
The utility model belongs to teaching experiment equipment technical field, specially a kind of measuring device of the critical force of water trapping layer glass separation.The bottom plate rotating platform of big glass film plates, several different size of small sheet glass, changeable different big glass film plates including several different surface roughness, slide rotating platform, tensiometer, syringe and the pedestal for placing different size of small sheet glass；Pedestal is equipped with a vertical posts；Bottom plate rotating platform and slide rotating platform horizontally rotate by shaft of upright bar；A hanging stick is equipped at the top of upright bar, tensiometer is hung on hanging stick by a fixed pulley；Pedestal is equipped with the bracket that can put syringe.The utility model production is simple, measurement method is easy to grasp, measurement result meets theory expectation, suitable for home use and science popularization experiment；Its critical force that can simply, be intuitively applied to analysis water trapping layer glass plate separation, the influence for the critical force such as quantitative expedition water trapping layer area and thickness, glass surface roughness.
Description
Technical field
The utility model belongs to teaching experiment equipment technical field, and in particular to a kind of critical force of water trapping layer glass separation
Measuring device.
Background technique
The two pieces of dry glass to fit together are easy to be separated；However it if is accompanied between parallel glass a thin layer of
Water, pulling open them will become very difficult.This phenomenon can often encounter in life.In the physics teaching material of junior-senior high school
In, also have such as: " after the air between two pieces of parallel glass plates is arranged with water, they being divided along vertical glass plate direction
Open, it is necessary to act on very big power along vertical glass plate direction, this is because _ _ _ _ _ _ effect, two blocks of glass are bigger, separate it
When active force _ _ _ _ _ _ " etc. examples.
Since the 1980s, people begin one's study existing liquid versus solid surfaces between solid lamella generate it is aobvious
The problem of writing adhesive attraction.1985, two piece smooth clouds of the H. K. Christenson et al. to separation soaking in ethylene glycol
Pulling force needed for master slice is measured, and the separate function of the mechanical system is given.2007, M. P. deBoer to liquid with
Adhesion strength between elastic hard coarse solids surface is modeled, and the relationship of itself and extraneous vapour pressure has been probed into, and selects polycrystalline
Silicon and water carry out experimental verification.2008, P. Lambert et al. respectively existed to liquid by ENERGY METHOD and static method
The lower concave meniscus shape formed of surface of solids constraint is studied, and demonstrates the equivalence of two methods.
For the utility model relates to water trapping layer the research that adheres to each other, physical mechanism pair are generated to small glass stratum
There is reference value in the adhesion effect for studying other liquid and solid.The measurement and analysis of the common phenomenon can design simultaneously
At experiment, applied in junior-senior high school and the basic physics course of university, excitation experiment person probe into and thinking ability.
The utility model proposes a kind of critical force of water trapping layer parallel glass separation under this research and application background
Simple measurement device and corresponding measurement method are operated by easy measuring device and careful measurement, realize that water trapping layer is flat
The measurement of critical force high accuracy needed for row glass separates.It, should compared to the high-acruracy survey equipment in specialized laboratory's measurement
Measuring device can be realized that measuring process can be from a people independently or with two people with the component being easily obtained in daily life
It completes.
Summary of the invention
It is high that the purpose of this utility model is to provide a kind of integrated levels, convenient for moving, is used for classroom instruction easily to operate
The measuring device of the critical force of the water trapping layer glass separation of experiment.
The measuring device of the critical force of water trapping layer glass separation provided by the utility model, including several different surfaces
The big glass film plates 1 of roughness, several different size of small sheet glass 2, the big glass bottom that different surface roughness can be switched
The bottom plate rotating platform 3 of plate 1, slide rotating platform 4, tensiometer 5, syringe 6 and the pedestal 7 for placing the small sheet glass 2 of different size；
The pedestal 7 is a flat surface platform, and pedestal 7 is equipped with the cylindrical upright bar 8 an of vertical feet 7；
Turn hole, slide rotating platform 4 and bottom plate rotation are equipped on the bottom plate rotating platform 3 and slide rotating platform 4
Platform 3 is covered in upright bar 8 by turn hole, and slide rotating platform 4 is on bottom plate rotating platform 3；Bottom plate rotating platform 3 limits
In 8 bottom of upright bar, i.e., on pedestal 7 and cannot move up；Slide rotating platform 4 is limited in 8 middle part of upright bar；Bottom plate rotating platform 3
Horizontally rotated with slide rotating platform 4 with upright bar 8 for shaft；
The big glass film plates 1 is fixedly installed in bottom plate rotating platform 3；
2 center of small sheet glass is equipped with the link 9 being fixedly connected, and is placed in slide rotating platform 4；
8 top horizontal of upright bar is equipped with a hanging stick 10, and a fixed pulley 11 is fixed on hanging stick 10, and tensiometer 5 is logical
Suspension strop is crossed to hang on fixed pulley 11；By pulling suspension strop, control tensiometer 5 is moved up and down；
1 center of big glass film plates can be adjusted by rotating bottom board rotating platform 3 with the hook center of tensiometer 5
In on a vertical line；
The pedestal 7 is equipped with the bracket that can put syringe 6.
In the utility model, the bottom plate rotating platform 3 is a big disk, and turn hole setting is in the center of circle, several difference tables
The big glass film plates 1 of surface roughness is arranged around turn hole, is fixed on bottom plate rotating platform 3.
In the utility model, the slide rotating platform 4 is made of the roundel of several mounted on top, and turn hole is set to
Each roundel is close to marginal position；Roundel is equipped with concave station, and the small sheet glass 2 of different size specification is placed in different small
In the concave station of disk；Each roundel can be rotated independently around upright bar 8.
In the utility model, the bottom plate rotating platform 3 is two disks connected by connecting rod, and turn hole is set to connecting rod
Center；The big glass film plates 1 of two kinds of different surface roughness is separately fixed on disk.
In the utility model, the slide rotating platform 4 is formed by connecting by four slide placement plates by cross connecting rod, is turned
Hole is set to the bar crossing center of cross connecting rod, and the small sheet glass 2 of four kinds of different size specifications is respectively placed in slide placement plate
On.
In the utility model, the bracket is c-type clip, and soft material, upward, bottom is the same as the fixed company of pedestal 7 for c-opening
It connects.Syringe 6 when not in use, using soft material deformability, is pressed into from c-opening, thus blocks fixation by clip.
In the utility model, the syringe 6 is set in bracket, and the syringe needle of syringe 6 is located at big 1 top of glass film plates.
It takes out, the core bar for cylinder of directly pushing pin, water can be instilled on big glass film plates 1 from bracket therefore without by syringe 6.
In the utility model, water storage case 12 is additionally provided on the pedestal 7.It fetches water and uses convenient for syringe.
The utility model proposes measuring device production it is simple, measurement method is easy to grasp, measurement result meet it is theoretical pre-
Phase, suitable for home use and science popularization experiment.The utility model can simply, intuitively be applied to analysis water trapping layer parallel plate separation
Critical force, the influence for the critical force such as quantitative expedition water trapping layer area and thickness, glass surface situation.
Detailed description of the invention
Fig. 1 is the structure diagram of the utility model embodiment 1.
Fig. 2 is the structure diagram of the utility model embodiment 2.
Fig. 3 is measurement data analysis chart.
Figure label: 1 for big glass film plates 1,2 be small sheet glass, and 3 be bottom plate rotating platform, and 4 be slide rotating platform, 5
It is syringe for tensiometer, 6,7 be pedestal, and 8 be upright bar, and 9 be link, and 10 be hanging stick, and 11 be fixed pulley, and 12 be water storage case, and 13 are
Limited block, 14 be limiting device.
Specific embodiment
Embodiment 1
The utility model includes big glass film plates 1, small sheet glass 2, bottom plate rotating platform 3, slide rotating platform 4, pulling force
Meter 5, syringe 6 and pedestal 7；
The pedestal 7 is a horizontal positioned surface platform, and plastic material, 7 center of pedestal is equipped with a vertical bottom
The cylindrical upright bar 8 of seat 7.
The bottom plate rotating platform 3 is the big disk of a plastic material, and diameter is less than the length and width of pedestal, turn hole setting
In the center of circle, the big glass film plates 1 of 3 pieces of different surface roughness is arranged around turn hole, is revolved by fixed be sticked to of seccotine in bottom plate
Turn on platform 3.
The bottom plate rotating platform 3 is covered in upright bar 8 by turn hole, and slide rotating platform 4 bottom plate rotating platform 3 it
On；Bottom plate rotating platform 3 is limited in 8 bottom of upright bar, i.e., on pedestal 7 and cannot move up；Limiting device 14 is to cover in upright bar 8
An annulus touch bottom plate rotating platform 3 and above the turn hole of bottom plate rotating platform 3；Annulus side wall is equipped with horizontal thread
Through-hole, equipped with lateral fixed screw；After fixed screw is tightened, screw withstands upright bar 8, fixes limiting device 14, same to time limit
Having made bottom plate rotating platform 3 cannot move up.
The slide rotating platform 4 is made of the roundel of four mounted on top, and it is close that turn hole is set to each roundel
Marginal position, each roundel can be rotated independently around upright bar 8, and roundel is equipped with concave station.
For the small sheet glass 2 there are four types of different area size specification, each small 2 center of sheet glass is same by seccotine
9 fixed bonding of link, small sheet glass 2 are placed in roundel concave station.
The link 9 includes square plate as adhesive surface and a shackle connected with adhesive surface, and shackle energy
Adhesive surface vertically is stood on, is also able to rotate and lies low on adhesive surface；Reduce 9 whole height of link with this.Roundel has certain thickness,
Interior concave station depth is greater than 9 whole height of link under shackle lying status.It can be reduced when rotating slide rotating platform 4 in this way
Interference, keeps slide rotating platform 4 compact-sized.
The roundel of the slide rotating platform 4 is limited in 8 middle part of upright bar；Limit is equipped with below the roundel in upright bar 8
Device 14, limiting device 14 of 14 structure of limiting device with bottom plate rotating platform 3.The quantity of roundel can be according to needed for experiment
Small 2 quantity of sheet glass increases and increases, and overlays in upright bar 8.
8 top horizontal of upright bar is fixed with a hanging stick 10, and fixed pulley 11 is set on hanging stick 10, and suspension strop passes through
Fixed pulley 11, one end are connected with tensiometer 5, and the other end is pulled by operator, controls tensiometer 5 with this and move up and down；Determining cunning
Wheel 11 is equipped with a limited block 13 on the suspension strop of one end that operator pulls, and 13 size of limited block is greater than fixed pulley 11
Gap between pulley and pulley bracket thereby guarantees that suspension strop will not fall off from fixed pulley 11.Limited block 13 is being hung simultaneously
Position setting on rope, it is ensured that the hook of tensiometer 5 can touch bottom plate rotating platform 3.
1 center of big glass film plates can be adjusted by rotating bottom board rotating platform 3 with the hook center of tensiometer 5
In on a vertical line；
The horizontal bracket being positioned radially that can put syringe 6 is set on the pedestal 7.The bracket is c-type clip, flexible plastic
Material, upward, bottom is fixedly connected by vertical screw with pedestal 7 c-opening.Syringe 6 when not in use, can using soft material
Morphotropism is pressed into from c-opening, thus blocks fixation by clip.
Water storage case 12 is additionally provided on the pedestal 7.It fetches water and uses convenient for syringe 6.
Embodiment 2
The bottom plate rotating platform 3 is two disks connected by connecting rod, and turn hole is set to connecting rod center；Two kinds
The big glass film plates 1 of different surface roughness is separately fixed on disk.
The slide rotating platform 4 is connected by four slide placement plates by cross connecting rod, and turn hole is set to cross connecting rod
Bar crossing center, the small sheet glass 2 of four kinds of different size specifications is respectively placed in different slide placement plates.Slide rotation
Platform 4 can increase according to 2 quantity of small sheet glass that experiment needs, and be superimposed upon in upright bar 8.
The syringe 6 is set in bracket, and the syringe needle of syringe 6 is located at big 1 top of glass film plates.Therefore without by syringe
6 take out from bracket, the core bar for cylinder of directly pushing pin, and can be instilled into water on big glass film plates 1.As shown in Figure 2.
Remaining structure is the same as embodiment 1.
Operation example
It is operated based on embodiment 1, the big glass film plates 1 that needs are measured goes to tensiometer 5 by bottom plate rotating platform 3
Underface；It will need to participate in the small sheet glass 2 of measurement, flipped out by the roundel of slide rotating platform 4, erect link 9
Shackle；The hook of tensiometer 5 is hooked on link 9, suspension strop is pulled, small sheet glass 2 is pulled out into slide rotating platform 4；
Water will be sucked in syringe 6, be then slowly instilled into water on big glass film plates 1, unclamp suspension strop, put down tensiometer
5, small sheet glass 2 is fitted on big glass film plates 1, is uniformly pressed water around by center by small sheet glass self gravity
It is flat, until water is full of entire small glass panel region, allow water overflowed between small sheet glass 2 and big glass film plates 1 completely, and without gas
Bubble.
Suspension strop is slowly pulled again, improves tensiometer 5, tensiometer 5 starts counting, when small sheet glass 2 and big glass film plates 1
When separation, the reading of tensiometer 5, critical force size are recorded；Then small sheet glass 2 is put into slide rotating platform 4.
Rotating bottom board rotating platform 3 switches the big glass film plates 1 of another surface roughness to 5 underface of tensiometer, turns over
Produce the roundel for storing the small sheet glass 2 of another dimensions；It is operated before repeating, different surface roughness is measured with this
The size of separation critical force between different area glass.
After the completion of experimental implementation, bottom plate rotating platform 3, slide rotating platform 4 and syringe 6 are playbacked, suspension strop is another
End, which is tied up, to be wound in upright bar 8, and pedestal 7 is walked at end.
Tensiometer, which is selected, digital to show pulling force size, while range ability and precision are higher, it is easy to accomplish this is practical
The novel desired tensiometer accurately measured.The selection of specific range ability and precision size, depending on actual measurement situation
It is fixed, if encountering the case where pulling force goes out greatly range, need replacing the tensiometer of a greater amount of journeys.If necessary to improve the accurate of measurement
Degree, can select high-precision tensiometer.The line of the fixed pulley other side is then held by gauger, and gauger, which passes through, pulls bracing wire,
It realizes that the vertical direction of tensiometer is mobile, upward pulling force is applied to the small sheet glass of epipelagic zone link.
Small sheet glass and the big glass film plates of the large scale of absorption are had nothing in common with each other in the selection of size, thickness and weight.It is small
The small sheet glass of size has selected the load glass that light weight, thickness are small to eliminate the influence that its own gravity measures critical force
Piece (quartz and glass material).The rectangular or square glass slide that muti-piece different area is cut out by cutting diamond tool is made
For the small sheet glass of upper layer small size in measurement.
Result that the present embodiment specifically measures as shown in figure 3, wherein abscissa is water layer area, with 25mm ×
The area of 25mm quartz slide is basic unit area 1 to be measured.Water layer thickness in legend, with 25mm × 25mm stone
The water layer thickness definition that English glass slide drop 1 drips is unit water layer thickness 1.Conclusion as can be drawn from Figure 3, in same thickness
In the case where, water trapping layer area is bigger, and critical force required for small sheet glass is bigger in parallel for separation water trapping layer, and the two is directly deposited
In linear relationship.In the case where same area, separation water trapping layer in parallel critical force size required for small sheet glass with water layer
The increase of thickness is gradually reduced.The conclusion that measurement data induction and conclusion in Fig. 3 goes out is calculated with theoretically progress surface tension
The conclusion arrived is almost the same, illustrates the feasibility of this programme.
In terms of specific value calculating, with reference to Calculation on Critical Force expression formula in theoretical calculation: F=Δ p × A(A: water level
Product；Δ p: there are difference of extra pressure inside and outside water), wherein pressure difference formula Δ p=σ/r.σ is the surface tension coefficient (table of σ=72 of water
The face coefficient of tension (poor)；R is water layer edge indent radius surface (r=δ/2).So, with 25mm, the smooth glass with concave surface half is
Example, it is 1.125N that critical force size, which is calculated, close with the 1.29N that actual measurement obtains.Measured data and theoretical calculation number
According to the close Simple measurement device for also illustrating the utility model and measurement method reasonability and science.
Claims (8)
1. a kind of measuring device of the critical force of water trapping layer glass separation, which is characterized in that coarse including several different surfaces
The big glass film plates (1) of degree, several different size of small sheet glass (2), the big glass bottom that different surface roughness can be switched
The bottom plate rotating platform (3) of plate (1), the slide rotating platform (4) for placing different size of small sheet glass (2), tensiometer (5),
Syringe (6) and pedestal (7)；
The pedestal (7) is a flat surface platform, and pedestal (7) is equipped with the cylindrical upright bar (8) an of vertical feet (7)；
Turn hole, slide rotating platform (4) and bottom plate rotation are equipped on the bottom plate rotating platform (3) and slide rotating platform (4)
Turn platform (3) to cover on upright bar (8) by turn hole, and slide rotating platform (4) is on bottom plate rotating platform (3)；Bottom plate rotation
Turn platform (3) and be limited in upright bar (8) bottom, i.e., on pedestal (7) and cannot move up；Slide rotating platform (4) is limited in upright bar
(8) middle part；Bottom plate rotating platform (3) and slide rotating platform (4) are horizontally rotated with upright bar (8) for shaft；
The big glass film plates (1) is fixedly installed in bottom plate rotating platform (3)；
Small sheet glass (2) center is equipped with the link (9) being fixedly connected, and is placed in slide rotating platform (4)；
Upright bar (8) top horizontal is equipped with a hanging stick (10), is fixed with a fixed pulley (11), tensiometer on hanging stick (10)
(5) it is hung on fixed pulley (11) by suspension strop；By pulling suspension strop, control tensiometer (5) is moved up and down；
The big glass film plates (1) can be located at below tensiometer (5) by rotating bottom board rotating platform (3)；
The pedestal (7) is equipped with the bracket that can put syringe (6).
2. measuring device as described in claim 1, which is characterized in that the bottom plate rotating platform (3) is a big disk, is turned
Hole setting is arranged in the center of circle, the big glass film plates (1) of several different surface roughness around turn hole, is fixed on bottom plate rotating platform
(3) on.
3. measuring device as described in claim 1, which is characterized in that the bottom plate rotating platform (3) is two and passes through connecting rod
The disk of connection, turn hole are set to connecting rod center；The big glass film plates (1) of two kinds of different surface roughness is separately fixed at
On disk.
4. measuring device as claimed in claim 1,2 or 3, which is characterized in that the slide rotating platform (4) is by several
Under the roundel composition that stacks, turn hole is set to each roundel close to marginal position；Roundel is equipped with concave station, different size
The small sheet glass (2) of specification is placed in the concave station of different roundels；Each roundel can be revolved independently around upright bar (8)
Turn.
5. measuring device as claimed in claim 1,2 or 3, which is characterized in that the slide rotating platform (4) is by four slides
Placement plate is formed by connecting by cross connecting rod, and turn hole is set to the bar crossing center of cross connecting rod, four kinds of different size specifications
Small sheet glass (2) is respectively placed in slide placement plate.
6. measuring device as claimed in claim 1,2 or 3, which is characterized in that the bracket is c-type clip, soft material, C
Type is opening up, and the same pedestal in bottom (7) is fixedly connected.
7. measuring device as claimed in claim 6, which is characterized in that the syringe (6) is set in bracket, and syringe (6)
Syringe needle be located above big glass film plates (1).
8. measuring device as claimed in claim 1,2 or 3, which is characterized in that be additionally provided with water storage case on the pedestal (7)
(12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820961282.5U CN208255032U (en) | 2018-06-21 | 2018-06-21 | A kind of measuring device of the critical force of water trapping layer glass separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820961282.5U CN208255032U (en) | 2018-06-21 | 2018-06-21 | A kind of measuring device of the critical force of water trapping layer glass separation |
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| Publication Number | Publication Date |
|---|---|
| CN208255032U true CN208255032U (en) | 2018-12-18 |
Family
ID=64654879
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820961282.5U Expired - Fee Related CN208255032U (en) | 2018-06-21 | 2018-06-21 | A kind of measuring device of the critical force of water trapping layer glass separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208255032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444912A (en) * | 2018-06-21 | 2018-08-24 | 任致辰 | A kind of measuring device of the critical force of water trapping layer glass separation |
-
2018
- 2018-06-21 CN CN201820961282.5U patent/CN208255032U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444912A (en) * | 2018-06-21 | 2018-08-24 | 任致辰 | A kind of measuring device of the critical force of water trapping layer glass separation |
| CN108444912B (en) * | 2018-06-21 | 2024-05-07 | 任致辰 | Device for measuring critical force of water-clamping layer glass separation |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20200621 |