CN109297902A - A kind of devices and methods therefor measuring dust surface adhesiveness - Google Patents
A kind of devices and methods therefor measuring dust surface adhesiveness Download PDFInfo
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- CN109297902A CN109297902A CN201811139370.8A CN201811139370A CN109297902A CN 109297902 A CN109297902 A CN 109297902A CN 201811139370 A CN201811139370 A CN 201811139370A CN 109297902 A CN109297902 A CN 109297902A
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- 239000000428 dust Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005303 weighing Methods 0.000 claims abstract description 63
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims description 27
- 238000007790 scraping Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention discloses a kind of devices for measuring dust surface adhesiveness, including slowspeed machine, stretch cord, upper cylinder, lower bonding piece, weighing sensor and data acquisition device；The upper cylinder is placed in the top of the lower bonding piece, and the lower bonding piece is placed on the weighing sensor；The weighing sensor is connected with the data acquisition device；One end of the stretch cord is upper along connecting with the upper cylinder, and the other end is connected with the shaft for the slowspeed machine being disposed above.The present invention provides a kind of methods for measuring dust surface adhesiveness, the vertical stretch-break method combined using slowspeed machine and stretch cord, so that the power uniform speed slow applied increases, give the record time of dust bonding face stripping process abundance, the method for overcoming the problems, such as not capturing record using non-stretchable rope moment drawing crack adhesive surface, and offset table top active force using counterpoise, overcomes the problems, such as that the high weighing sensor range of precision is small, the measurement device range is wide, and precision is high.
Description
Technical field
The present invention relates to dust surface adhesiveness technical field of measuring equipment more particularly to a kind of measurement dust surface to bond
The devices and methods therefor of property.
Background technique
In sack cleaner, since dust surface cohesive force causes dust bonding in filtration system, it is not easy blowing and falls off,
To influence ash-removal effect.However dust surface cohesive force is not easy to determine, existing measuring method is in GB/T 16913-2008
Powder sample is placed in viscosity balance left arm hook, and hang in right arm by using viscosity balance by the vertical stretch break method used
Place tube filled with water on disk, filled the water in cylinder using injector, at the same observe balance indicator until pointer left avertence i.e. stop water filling, this
Kind of method needs manual operation, and operate it is fine, by manual operation be added dropwise moisture be easy to cause in microdetermination method compared with
Big error, and since moisture is micro, moisture is easy evaporation loss quality in air, can all cause larger mistake in actual operation
Difference, and this method is only capable of the cohesive force between measurement dust and dust, and the cohesive force between dust and filter membrane can not be measured, it fits
It is more narrow with range.
Based on the above considerations, the present invention devises a kind of devices and methods therefor for measuring dust surface adhesiveness, energy
Enough Accurate Determining dust bonding power.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, adapt to reality and need, provide a kind of measurement dust surface
The devices and methods therefor of caking property, being capable of Accurate Determining dust bonding power.
In order to achieve the object of the present invention, the technical solution adopted by the present invention are as follows:
The invention discloses it is a kind of measure dust surface adhesiveness device, including slowspeed machine, stretch cord, upper cylinder, under
Bonding piece, weighing sensor and data acquisition device；The upper cylinder is the cylindrical structure of cross section in a ring, the upper cylinder
It is placed in the top of the lower bonding piece, the lower bonding piece is placed on the weighing sensor；The weighing sensor with
The data acquisition device is connected；One end of the stretch cord and the upper cylinder it is upper along connect, the other end be set to it
The shaft of the slowspeed machine of top is connected.
The slowspeed machine is placed in the top of bracket, and the bracket is fixed on the weighing and sensing in inverted "L" shape structure
The side of device；One end of the stretch cord is connected with the shaft of the slowspeed machine, and the upper edge of the other end and the upper cylinder passes through
Hook connection.
The middle part of the bracket is equipped with the annulus baffle being set in outside the upper cylinder；The outer wall of the upper cylinder is equipped with section
Flange in a ring, the outer diameter of the flange are greater than the internal diameter of the annulus baffle.
The lower bonding piece be lower cylinder, the lower cylinder be in open-topped hollow cylindrical structure, the lower cylinder it is inside and outside
Diameter is equal with the inside and outside diameter of the upper cylinder respectively, and the upper cylinder is placed in the top of the lower cylinder and its lower edge and the lower cylinder
It is upper along being overlapped, be placed on the weighing sensor after the upper and lower cylinder docking combination.
The lower bonding piece is filter membrane, and the filter membrane is placed on the weighing sensor, and the bottom of the upper cylinder is placed
In the top of the filter membrane.
The top of the weighing sensor is equipped with the weighing sensor platform for placing lower cylinder.
Two upper sides of the weighing sensor platform are respectively equipped with fixed pulley, are set with connecting rope on the fixed pulley,
One end of the connecting rope is connect with the weighing sensor platform, and the other end is fixed with counterpoise.
A method of measurement dust surface adhesiveness, it is characterised in that: include the following steps,
S1: dress dirt: upper cylinder being placed at the top of lower bonding piece, dirt sample is put by upper cylinder top opening, is full of upper cylinder, pressure
It is real fine and close, upper cylinder upper end dirt sample is struck off with scraping blade and is cleaned out periphery dirt sample with hairbrush；
S2: counterweight: the upper cylinder after dress dirt is placed in lower bonding piece, lower bonding piece is placed in weighing sensor platform
On, if upper cylinder, lower bonding piece and dirt sample weight are more than weighing sensor range, one is respectively added two fixed pulley other sides
The equal counterpoise of quality, so that the registration of weighing sensor is in 1/2 range between full scale；
S3: upper cylinder is hung under stretch cord, so that stretch cord keeps perpendicular to the ground, starts weighing sensor and data
Acquisition device starts slowspeed machine, adjusts the slowspeed machine speed, observes data acquisition device data and curves, which attaches most importance to
Power versus time curve, as slowspeed machine is run, which slowly declines, until in upper cylinder dust and lower bonding piece
Between be broken, upper cylinder can be bounced with stretch cord moment at this time, and the minimum value before record fracture is G1 (mg), the fracture of dirt sample
Stability number later is G2 (mg), and measurement terminates；
S4: it calculates: calculating caking property P (g/cm2) as follows:
P=(G2-G1)/A
Wherein A is dirt sample sectional area, and unit is square centimeter (cm2).
The slowspeed machine revolving speed is 2~5r/min.
The stretch cord stiffness factor is 10~20N/m.
The lower bonding piece is lower cylinder, and in the step S1, upper cylinder is placed at the top of lower cylinder and upper cylinder lower edge and lower cylinder
It is upper to be put into dirt sample by upper cylinder top opening along being overlapped, it is full of upper and lower cylinder, compacting is fine and close, strikes off upper cylinder upper end dirt sample with scraping blade
And periphery dirt sample is cleaned out with hairbrush；In the step S2, the upper and lower cylinder after dress dirt is placed in weighing sensor platform
On, if upper and lower cylinder and dirt sample weight are more than weighing sensor range, a quality phase is respectively added two fixed pulley other sides
Deng counterpoise so that the registration of weighing sensor is in 1/2 range between full scale.
The lower bonding piece is filter membrane, in the step S1, the bottom of upper cylinder is placed on filter membrane, by dirt sample by upper cylinder
Top opening is put into, and is full of upper and lower cylinder, and compacting is fine and close, with scraping blade strike off upper cylinder upper end dirt sample and with hairbrush periphery dirt sample is clear
Reason is clean；In the step S2, the upper cylinder after dress dirt is placed on filter membrane, filter membrane is placed on weighing sensor platform, if
Upper cylinder, filter membrane and dirt sample weight are more than weighing sensor range, then it is equal respectively to add a quality two fixed pulley other sides
Counterpoise so that the registration of weighing sensor is in 1/2 range between full scale.
The beneficial effects of the present invention are:
1. the vertical stretch-break method that the present invention is combined using slowspeed machine and stretch cord is turned by control slowspeed machine
Speed, slowspeed machine at the uniform velocity pull stretch cord, so that the power increasing degree applied is uniformly slow, therefore remove in dust bonding face
Journey, there are the sufficient record times, and overcome and broken adhesive surface using non-stretchable rope moment and be difficult to capture and recording device drawing
The problem of disconnected front and back moment stress；
2. the present invention offsets lower cylinder self weight using counterpoise, overcome the problems, such as that the range of the high sensor of precision is small, thus
Avoid the problem that cylinder and filled dust quality sum outrange continuous mode up and down, meet most of experiment demands；
3. device range provided by the present invention is wide, precision is high, and records the quality in stretch breaking process by data and curves
Change, the data obtained is reliably easy to get, and there's almost no human error, and the calculation method science used is easy, is a kind of efficient
Measurement dust surface adhesiveness method.
4. the present invention can not only measure the cohesive force between dust and dust, can also measure between dust and filter membrane
Cohesive force.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure, 1 slowspeed machine, 2 shafts, 3 brackets, 4 stretch cords, 5 are linked up with, 6 annulus baffles, 7 flanges, cylinder on 8,9 lower cylinders,
10 fixed pulleys, 11 counterpoises, 12 weighing sensors, 13 weighing sensor platforms, 14 data acquisition devices.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Referring to Fig. 1.
The invention discloses it is a kind of measure dust surface adhesiveness device, including slowspeed machine 1, stretch cord 4, upper cylinder 8,
Lower bonding piece, weighing sensor 12 and data acquisition device 14；The upper cylinder 8 is the cylindrical structure of cross section in a ring,
The upper cylinder 8 is placed in the top of the lower bonding piece, and the lower bonding piece is placed on the weighing sensor 12；The title
Sensor 12 is retransmitted to be connected with the data acquisition device 14；One end of the stretch cord 4 is connect with the upper edge of the upper cylinder 8,
The other end is connected with the shaft 2 for the slowspeed machine 1 being disposed above, and this case is combined using slowspeed machine 1 and stretch cord 4
Vertical stretch-break method at the uniform velocity pulls stretch cord 4 by controlling 1 revolving speed of slowspeed machine, so that the power increasing degree applied is at the uniform velocity slow
Slowly, therefore in dust bonding face stripping process there are the sufficient record times, and overcome broken using non-stretchable rope moment it is viscous
Junction and be difficult to capture the problem of breaking front and back moment stress with recording device；This case range is wide, and precision is high, and passes through data song
Line records the mass change in stretch breaking process, and the data obtained is reliably easy to get, and there's almost no human error, and the calculating side used
Forensic science is easy；Data acquisition device 14 is the prior art in this case, and is not the main innovation point of this case, therefore no longer superfluous
State its working principle.
The slowspeed machine 1 is placed in the top of bracket 3, and the bracket 3 is fixed on the weighing in inverted "L" shape structure and passes
Slowspeed machine 1 is placed in the top of upper cylinder 8 by setting bracket 3 by the side of sensor 12, it is ensured that stretch cord 4 respectively with low speed
Motor 1, upper cylinder 8 it is upper along connection when, keep plumbness, it is ensured that measurement dust bonding accuracy.
One end of the stretch cord 4 is connected with the shaft 2 of the slowspeed machine 1, along logical on the other end and the upper cylinder 8
5 connection of hook is crossed, is easily installed and dismantles by the upper edge that hook 5 connects upper cylinder 8, improve working efficiency.
The middle part of the bracket 3 is equipped with the annulus baffle 6 being set in outside the upper cylinder 8；The outer wall of the upper cylinder 8 is equipped with
The flange 7 of ring-shaped section and ring-shaped, the outer diameter of the flange 7 are greater than the internal diameter of the annulus baffle 6, pass through annulus baffle 6 and flange 7
It matches, the moment for preventing stretch cord 4 from separating upper cylinder 8 with lower bonding piece, height is bounced on upper cylinder 8, hit bracket 3 and upper end
Slowspeed machine 1, cause unnecessary loss.
Embodiment one: the lower bonding piece is lower cylinder 9, and the lower cylinder 9 is in open-topped hollow cylindrical structure, described
The inside and outside diameter of lower cylinder 9 is equal with the inside and outside diameter of the upper cylinder 8 respectively, the upper cylinder 8 be placed in the top of the lower cylinder 8 and its
Lower edge is upper along being overlapped with the lower cylinder 8, is placed on the weighing sensor 12 after the upper and lower cylinder docking combination, this reality
Example is applied by filling dirt sample in upper and lower cylinder, the cohesive force between dust and dust can be measured.
Embodiment two: the lower bonding piece is filter membrane, and the lower bonding piece is filter membrane, and the filter membrane is placed in the weighing
On sensor 12, the bottom of the upper cylinder 8 is placed in the top of the filter membrane, can measure the bonding between dust and filter membrane
Power.
The top of the weighing sensor 12 is equipped with the weighing sensor platform 13 for placing lower cylinder 9, is claimed by setting
Bonding piece under the more convenient placement of weight sensor platform 13.
Two upper sides of the weighing sensor platform 13 are respectively equipped with fixed pulley 10, the company of being set on the fixed pulley 10
Splicing, one end of the connecting rope are connect with the weighing sensor platform 13, and the other end is fixed with counterpoise 11, by flat
The counterweight 11 that weighs offsets lower cylinder 9 and is self-possessed, and overcomes the problems, such as that the range of the high sensor of precision is small, to avoid the upper and lower cylinder of continuous mode
And filled dust quality sum the problem of outranging, meet most of experiment demands.
Embodiment three: it is 20mm that the present embodiment, which selects internal diameter, the upper and lower cylinder of a height of 24mm, and sectional area is
3.14cm2；Selected range is 0~200g, and precision is the weighing sensor of 0.0001g；Selecting stiffness factor is the elastic force of 15N/m
Rope.
S1: dress dirt: by upper cylinder be placed at the top of lower cylinder and upper cylinder lower edge on lower cylinder along being overlapped, by dirt sample by upper cylinder top
Opening is put into, and is full of upper and lower cylinder, and compacting is fine and close, is struck off upper cylinder upper end dirt sample with scraping blade and is cleared up periphery dirt sample with hairbrush and done
Only；
S2: counterweight: the upper and lower cylinder after dress dirt is placed on weighing sensor platform, at this time upper and lower cylinder and dirt sample weight
More than weighing sensor range, then the counterpoise that a quality is 50g is respectively added two fixed pulley other sides, so that weighing
The registration of sensor is in 1/2 range between full scale, and registration is 130.5213g after balancing in this embodiment；
S3: upper cylinder is hung under stretch cord, so that stretch cord keeps perpendicular to the ground, starts weighing sensor and data
Acquisition device starts slowspeed machine, which is 5r/min, observes data acquisition device data and curves, should
Curve is gravity versus time curve, and as slowspeed machine is run, which slowly declines, the dust in upper and lower cylinder
Fracture, upper cylinder can be bounced with stretch cord moment at this time, and the minimum value before record fracture is G1=59.5893g, and dirt sample is disconnected
Stability number after splitting is G2=60.9112g, and measurement terminates；
P=(G2-G1)/A=0.4210g/cm2
The dust bonding measured in the present embodiment is 0.4210g/cm2。
Example IV: selection internal diameter is 20mm, the upper cylinder of a height of 24mm, sectional area 3.14cm2；Select diameter 30mm
Filter membrane；Selected range is 0~200g, and precision is the weighing sensor of 0.0001g；Selecting stiffness factor is the elastic force of 15N/m
Rope.
S1: dress dirt: filter membrane is placed on weighing sensor platform, then upper cylinder is placed on filter membrane, by dirt sample by
Upper cylinder top opening is put into, and is full of upper cylinder, and compacting is fine and close, with scraping blade strike off upper cylinder upper end dirt sample and with hairbrush periphery dirt sample is clear
Reason is clean；
S2: counterweight: the upper cylinder after dirt will be filled and filter membrane is placed on weighing sensor platform, weighing sensor shows at this time
Digital display shows 180.4587g, registration in 1/2 range between full scale, without adding counterpoise in fixed pulley two sides；
S3: upper cylinder is hung under stretch cord, so that stretch cord keeps perpendicular to the ground, starts weighing sensor and data
Acquisition device starts slowspeed machine, which is 5r/min, observes data acquisition device data and curves, should
Curve is gravity versus time curve, and as slowspeed machine is run, which slowly declines, the dust in upper and lower cylinder
Fracture, upper cylinder can be bounced with stretch cord moment at this time, and the minimum value before record fracture is G1=108.7684g, dirt sample
Stability number after fracture is G2=110.7324g, and measurement terminates；
P=(G2-G1)/A=0.4210g/cm2
The dust bonding measured in the present embodiment is 0.6255g/cm2。
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (10)
1. a kind of device for measuring dust surface adhesiveness, it is characterised in that: including slowspeed machine (1), stretch cord (4), upper cylinder
(8), lower bonding piece, weighing sensor (12) and data acquisition device (14)；The upper cylinder (8) is the circle of cross section in a ring
Column construction, the upper cylinder (8) are placed in the top of the lower bonding piece, and the lower bonding piece is placed in the weighing sensor
(12) on；The weighing sensor (12) is connected with the data acquisition device (14)；One end of the stretch cord (4) and institute
The upper along connection of cylinder (8) is stated, the other end is connected with the shaft (2) for the slowspeed machine (1) being disposed above.
2. a kind of device for measuring dust surface adhesiveness according to claim 1, it is characterised in that: the slowspeed machine
(1) it is placed in the top of bracket (3), the bracket (3) is fixed on the one of the weighing sensor (12) in inverted "L" shape structure
Side；One end of the stretch cord (4) is connected with the shaft (2) of the slowspeed machine (1), and the other end is upper with the upper cylinder (8)
It is connected along by hook (5).
3. a kind of device for measuring dust surface adhesiveness according to claim 2, it is characterised in that: the bracket (3)
Middle part be equipped be set in the annulus baffle (6) of the upper cylinder (8) outside；The outer wall of the upper cylinder (8) is equipped with ring-shaped section and ring-shaped
Flange (7), the outer diameter of the flange (7) is greater than the internal diameter of the annulus baffle (6).
4. a kind of device for measuring dust surface adhesiveness according to claim 3, it is characterised in that: the lower bonding piece
For lower cylinder (9), the lower cylinder (9) is in open-topped hollow cylindrical structure, the inside and outside diameter of the lower cylinder (9) respectively with institute
The inside and outside diameter for stating cylinder (8) is equal, and the upper cylinder (8) is placed in the top of the lower cylinder (8) and its lower edge and the lower cylinder
(8) upper edge is overlapped, and is placed on the weighing sensor (12) after the upper and lower cylinder docking combination.
5. a kind of device for measuring dust surface adhesiveness according to claim 3, it is characterised in that: the lower bonding piece
For filter membrane, the filter membrane is placed on the weighing sensor (12), and the bottom of the upper cylinder (8) is placed in the top of the filter membrane
Portion.
6. a kind of device for measuring dust surface adhesiveness according to claim 4 or 5, it is characterised in that: the weighing
The top of sensor (12) is equipped with the weighing sensor platform (13) for placing lower cylinder (9).
7. a kind of device for measuring dust surface adhesiveness according to claim 6, it is characterised in that: the weighing and sensing
Two upper sides of device platform (13) are respectively equipped with fixed pulley (10), are set with connecting rope, the connection on the fixed pulley (10)
One end of rope is connect with the weighing sensor platform (13), and the other end is fixed with counterpoise (11).
8. a kind of method for measuring dust surface adhesiveness, it is characterised in that: include the following steps,
S1: dress dirt: upper cylinder being placed at the top of lower bonding piece, dirt sample is put by upper cylinder top opening, is full of upper cylinder, and compacting causes
It is close, upper cylinder upper end dirt sample is struck off with scraping blade and is cleaned out periphery dirt sample with hairbrush；
S2: counterweight: the upper cylinder after dress dirt is placed in lower bonding piece, and lower bonding piece is placed on weighing sensor platform, if
Upper cylinder, lower bonding piece and dirt sample weight are more than weighing sensor range, then respectively add a quality two fixed pulley other sides
Equal counterpoise, so that the registration of weighing sensor is in 1/2 range between full scale；
S3: upper cylinder is hung under stretch cord, so that stretch cord keeps perpendicular to the ground, starts weighing sensor and data acquisition
Device starts slowspeed machine, adjusts the slowspeed machine speed, observes data acquisition device data and curves, the curve be gravity with
The change curve of time, as slowspeed machine is run, which slowly declines, until the dust in upper cylinder and between lower bonding piece
Fracture, upper cylinder can be bounced with stretch cord moment at this time, and the minimum value before record fracture is G1 (mg), after the fracture of dirt sample
Stability number be G2 (mg), measurement terminates；
S4: it calculates: calculating caking property P (g/cm2) as follows:
P=(G2-G1)/A
Wherein A is dirt sample sectional area, and unit is square centimeter (cm2).
9. a kind of method for measuring dust surface adhesiveness according to claim 8, it is characterised in that: the lower bonding piece
For lower cylinder, in the step S1, upper cylinder is placed at the top of lower cylinder and upper cylinder lower edge is overlapped with edge on lower cylinder, by dirt sample by upper cylinder
Top opening is put into, and is full of upper and lower cylinder, and compacting is fine and close, with scraping blade strike off upper cylinder upper end dirt sample and with hairbrush periphery dirt sample is clear
Reason is clean；In the step S2, the upper and lower cylinder after dress dirt is placed on weighing sensor platform, if upper and lower cylinder and dirt sample weight
Amount is more than weighing sensor range, then respectively adds the equal counterpoise of quality two fixed pulley other sides, so that claiming
The registration of re-transmission sensor is in 1/2 range between full scale.
10. a kind of method for measuring dust surface adhesiveness according to claim 8, it is characterised in that: the lower bonding
Part is filter membrane, and in the step S1, the bottom of upper cylinder is placed on filter membrane, and dirt sample is put by upper cylinder top opening, is full of
Upper and lower cylinder, compacting is fine and close, strikes off upper cylinder upper end dirt sample with scraping blade and is cleaned out periphery dirt sample with hairbrush；The step S2
In, the upper cylinder after dress dirt is placed on filter membrane, filter membrane is placed on weighing sensor platform, if upper cylinder, filter membrane and dirt sample weight
Amount is more than weighing sensor range, then respectively adds the equal counterpoise of quality two fixed pulley other sides, so that claiming
The registration of re-transmission sensor is in 1/2 range between full scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811139370.8A CN109297902A (en) | 2018-09-28 | 2018-09-28 | A kind of devices and methods therefor measuring dust surface adhesiveness |
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| CN201811139370.8A CN109297902A (en) | 2018-09-28 | 2018-09-28 | A kind of devices and methods therefor measuring dust surface adhesiveness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111077070A (en) * | 2019-12-17 | 2020-04-28 | 中安联合煤化有限责任公司 | Fly ash adhesion force measuring device and measuring method thereof |
| CN113108971A (en) * | 2021-03-16 | 2021-07-13 | 南京航空航天大学 | Box type balance with pretightening force and measuring method |
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