CN203858181U - Novel liquid surface tension coefficient tester - Google Patents
Novel liquid surface tension coefficient tester Download PDFInfo
- Publication number
- CN203858181U CN203858181U CN201420179451.1U CN201420179451U CN203858181U CN 203858181 U CN203858181 U CN 203858181U CN 201420179451 U CN201420179451 U CN 201420179451U CN 203858181 U CN203858181 U CN 203858181U
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- CN
- China
- Prior art keywords
- suspension ring
- hole
- measurement
- surface tension
- ring
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model provides a novel liquid surface tension coefficient tester. A regulating ring is additionally arranged above a measurement ring; three uniformly distributed horizontal vent holes are formed in the lateral wall of the regulating ring; a vertical linear hole is formed at the horizontal vent holes, and is communicated with the horizontal vent holes; a regulating hand-wheel is arranged in each horizontal vent hole; a suspension wire winds each regulating hand-wheel reversely; one end of each suspension wire runs through the vertical linear hole and is fixedly connected with a silicon piezoresistive force sensor, and the other end of each suspension wire runs through the vertical linear hole and is fixedly connected with the measurement ring; the regulating hand-wheels and the regulating ring form rotating fit; a round positioning plate is fixed on the inner wall of the measurement ring; the round positioning plate is parallel to the lower surface of the measurement ring and positioned above the lower surface; a gradienter is fixed on the round positioning plate. The measurement ring is completely in a horizontal state in measurement, the operation is simple and convenient, gross errors are prevented from being introduced, measurement errors are reduced, measurement accuracy is improved, and liquid surface tension coefficients at different temperatures can be measured.
Description
Technical field
The utility model belongs to measurement instrument technical field, relates to a kind of analyzer, particularly a kind of new liquid surface tension coefficient analyzer.
Background technology
Liquid surface has tension force, utilizes it that the peculiar many phenomenons of liquid condition of material can be described, as the formation of foam, moistening and capillarity etc.In industrial technology, as all wanted effects on surface tension force to study in the aspects such as flotation technology and liquid conveying technology.In existing Measurement of liquid surface tension coefficient instrument, the general method that pulls that adopts is measured liquid surface tension coefficient, mostly replace Jolly spring balance in the past with silicon pressure resistance dependent sensor and digital voltmeter that semiconductor resistor foil gauge forms at present, torsion balance, it equality, carry out the measurement of liquid surface tension coefficient, there is following some deficiency in existing Measurement of liquid surface tension coefficient instrument: (1) is by regulating the length of 3 fine wires, with under eyes observe and decide suspension ring along apart from whether uniformity of the distance of the water surface, both inconvenient by the method, there is no again scientific basis, whether level is difficult to judgement to suspension ring, regulate the bad accuracy that directly has influence on measurement result, when measurement as 1 ° of suspension ring deviation, it is 0.5% that measurement result is introduced error, 2 ° of deviations, error is 16%, (2) liquid level regulation device can not ensure that container steadily moves up and down, suspension ring or scale pan vibrations, swing (single pendulum and conical pendulm), rotation etc. while easily causing container to decline, can make like this hook on silicon pressure resistance dependent sensor stressed unstable, not vertical, digital voltmeter shows unstable, liquid film is fracture suddenly easily, introduces gross error measuring accuracy is reduced, (3) can only measure the liquid surface tension coefficient under room temperature environment, different demands when actual measurement can not be met.
Summary of the invention
The utility model is to solve the larger technical matters of Measurement of liquid surface tension coefficient instrument measuring error in prior art, design a kind of new liquid surface tension coefficient analyzer, utilize the control hand wheel regulating on suspension ring to regulate the length of suspension wire, make to measure suspension ring measure time completely in horizontality, simple to operation, avoid the introducing of gross error, reduced measuring error, improved measuring accuracy.
The concrete technical scheme that the utility model adopts is: a kind of new liquid surface tension coefficient analyzer, comprise digital voltmeter, support, robot scaling equipment, on the crossbeam of top of the trellis, be provided with the silicon pressure resistance dependent sensor being connected with digital voltmeter, measuring suspension ring hangs below silicon pressure resistance dependent sensor by suspension wire, measure suspension ring below and be provided with container, on container, be provided with liquid level regulation device, key is: above measuring suspension ring, set up adjusting suspension ring, on the sidewall of adjusting suspension ring, offer 3 equally distributed horizontal through hole, horizontal through hole place offers vertical curve hole, vertical curve hole is communicated with horizontal through hole, in horizontal through hole, be provided with control hand wheel, suspension wire reverse-winding is on control hand wheel, the break-through vertical curve hole, one end of suspension wire is fixedly connected with silicon pressure resistance dependent sensor, the other end break-through vertical curve hole of suspension wire is fixedly connected with measurement suspension ring, control hand wheel is rotatably assorted with regulating suspension ring formation, on the inwall of measurement suspension ring, be fixed with circular location-plate, circular location-plate is parallel with the lower surface of measuring suspension ring and be positioned at above lower surface, on circular location-plate, be fixed with level meter.
The beneficial effects of the utility model are: the utility model is simple in structure, easy to operate, utilize the control hand wheel regulating on suspension ring to regulate the length of suspension wire, make to measure suspension ring completely in horizontality by eye-level instrument.Utilize water drain valve to control the flow velocity of testing liquid, make liquid level smooth decreasing, pull easily, and the measurement suspension ring that can avoid liquid level to shake causing or scale pan vibrations, swing (single pendulum and conical pendulm), rotation etc., make hook stability under loading on silicon pressure resistance dependent sensor, vertically, digital voltmeter shows stable, has avoided the introducing of gross error, reduce measuring error, improved measuring accuracy.Utilize heated at constant temperature instrument to heat the testing liquid in container, can measure the liquid surface tension coefficient under different temperatures, the different demands while meeting actual measurement.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the diagrammatic cross-section of measuring suspension ring in the utility model.
Fig. 3 is the vertical view that regulates suspension ring in the utility model.
Fig. 4 is the front view of control hand wheel in the utility model.
Fig. 5 is the vertical view of control hand wheel in the utility model.
In accompanying drawing, 1 represents digital voltmeter, and 2 represent support, 3 represent silicon pressure resistance dependent sensor, and suspension ring are measured in 4 representatives, and 5 represent suspension wire, 6 represent container, and 7 representatives regulate suspension ring, and 8 represent vertical curve hole, 9 represent circular location-plate, and 10 represent level meter, and 11 represent mozzle, 12 representatives connect liquid container, and 13 represent water drain valve, 14 representative hooks, 15 represent rotating shaft, and 16 represent handle, and 17 represent through wires hole.
Embodiment
The utility model is to solve the larger technical matters of Measurement of liquid surface tension coefficient instrument measuring error in prior art, design a kind of new liquid surface tension coefficient analyzer, utilize the length that regulates suspension ring 7 to regulate suspension wire 5, make to measure suspension ring 4 measure time completely in horizontality, simple to operation, avoid the introducing of gross error, reduced measuring error, improved measuring accuracy.
A kind of new liquid surface tension coefficient analyzer, comprise digital voltmeter 1, support 2, robot scaling equipment, on the crossbeam at support 2 tops, be provided with the silicon pressure resistance dependent sensor 3 being connected with digital voltmeter 1, measuring suspension ring 4 hangs below silicon pressure resistance dependent sensor 3 by suspension wire 5, measure suspension ring 4 belows and be provided with container 6, on container 6, be provided with liquid level regulation device, key is: above measuring suspension ring 4, set up adjusting suspension ring 7, on the sidewall of adjusting suspension ring 7, offer 3 equally distributed horizontal through hole, horizontal through hole place offers vertical curve hole 8, vertical curve hole 8 is communicated with horizontal through hole, in horizontal through hole, be provided with control hand wheel, suspension wire 5 reverse-windings are on control hand wheel, the break-through vertical curve hole, one end 8 of suspension wire 5 is fixedly connected with silicon pressure resistance dependent sensor 3, the other end break-through vertical curve hole 8 of suspension wire 5 is fixedly connected with measurement suspension ring 4, control hand wheel is rotatably assorted with regulating suspension ring 7 formation, on the inwall of measurement suspension ring 4, be fixed with circular location-plate 9, circular location-plate 9 is parallel with the lower surface of measuring suspension ring 4 and be positioned at above lower surface, on circular location-plate 9, be fixed with level meter 10.Utilize control hand wheel to regulate suspension wire 5 length, make to measure suspension ring 4 completely in horizontality by eye-level instrument 10, make hook 14 stability under loading on silicon pressure resistance dependent sensor 3, vertically, digital voltmeter 1 shows stable, avoid the introducing of gross error, reduce measuring error, improved measuring accuracy.
Described control hand wheel comprises rotating shaft 15, and one end of rotating shaft 15 is fixed with handle 16, offers circular through hole as through wires hole 17 in rotating shaft 15, suspension wire 5 break-through through wires holes 17 reverse-winding are in rotating shaft 15, utilize through wires hole 17 to realize the reverse-winding of suspension wire 5, simple in structure, easy to operate.
Described container 6 is heated at constant temperature instrument, utilizes heated at constant temperature instrument to heat testing liquid, can measure the liquid surface tension coefficient under different temperatures, the different demands while meeting actual measurement.
Described liquid level regulation device comprises the mozzle 11 being communicated with container 6, mozzle 11 with connect liquid container 12 and be communicated with, on mozzle 11, be provided with water drain valve 13, utilize water drain valve 13 to control the flow velocity of testing liquid, make liquid level smooth decreasing, pull easily, and the measurement suspension ring 4 that can avoid liquid level to shake causing or scale pan vibrations, swing (single pendulum and conical pendulm), rotation etc., make hook 14 stability under loading on silicon pressure resistance dependent sensor 3, vertically, digital voltmeter 1 shows stable, avoid the introducing of gross error (human error), improve measuring accuracy.
Described robot scaling equipment comprises the scale pan, the counterweight that are placed on measurement suspension ring 4 upper surfaces.
Described analyzer also comprises the hook 14 being fixedly connected with silicon pressure resistance dependent sensor 3, and suspension wire 5 hangs on hook 14, when measurement, suspension wire 5 is hung on hook 14, simple to operation.
The utility model comprises the following steps in the specific implementation:
A, first open digital voltmeter 1 preheating three to five minutes, then utilize robot scaling equipment to calibrate silicon pressure resistance dependent sensor 3.Its concrete operations are that scale pan is hung on the hook of silicon pressure resistance dependent sensor 3, by the rotation knob that returns to zero, digital voltmeter 1 is made zero, then the counterweight of seven 0.5g is added in scale pan successively, record corresponding voltage output value, to measure data fitting straight line, obtain the sensitivity B of silicon pressure resistance dependent sensor 3 by least square method.
B, measure the inside and outside diameter of suspension ring 4 with vernier caliper measurement, be designated as respectively D
1, D
2.
C, by regulating control hand wheel on suspension ring 7 to regulate the length of suspension wire 5, the level meter 10 being fixed on circular location-plate 9 by observations judges whether measurement suspension ring 4 are up to the standard.
D, in container 6, pack testing liquid into, making to measure 4 times edges of suspension ring immerses in testing liquid, open the power supply preheating of heated at constant temperature instrument, utilize temperature control equipment target setting temperature, heated at constant temperature instrument is started working, due to heat conducting effect, testing liquid temperature can slowly approach the target temperature of setting.
E, open the water drain valve 13 on liquid level regulation device, slowly discharge testing liquid, utilize water drain valve 13 to control liquid level decline rate well.Write down the reading value U that measurement suspension ring 4 are about to break the front digital voltmeter 1 of fluid column
1, break rear moment digital voltmeter reading value U of 1
2.
F, according to F=π (D
1+ D
2) α=(U
1-U
2) ∕ B obtains liquid surface tension coefficient α=(U
1-U
2) ∕ π (D
1+ D
2) B, compare computation and measurement error with standard value.
Taking pure water as example: generally, 25 DEG C time, the surface tension coefficient of water is 7.196 × 10
-2n/m, liquid surface tension coefficient can utilize relative deviation to describe error condition, the relative deviation of existing instrument gained is about 2.5%, and the relative deviation that utilizes the utility model gained is about 0.8%, by contrast, be not difficult to find out, the utility model is simple in structure, easy to operate, utilize control hand wheel to adjust the length of suspension wire 5, make to measure suspension ring 4 completely in horizontality, make hook 14 stability under loading on silicon pressure resistance dependent sensor 3, vertically, digital voltmeter 1 shows stable, avoid the introducing of gross error, reduce measuring error, improve measuring accuracy, utilize heated at constant temperature instrument to heat testing liquid, can measure the liquid surface tension coefficient under different temperatures, different demands while meeting actual measurement.
Claims (5)
1. a new liquid surface tension coefficient analyzer, comprise digital voltmeter (1), support (2), robot scaling equipment, on the crossbeam at support (2) top, be provided with the silicon pressure resistance dependent sensor (3) being connected with digital voltmeter (1), measuring suspension ring (4) hangs in silicon pressure resistance dependent sensor (3) below by suspension wire (5), measure suspension ring (4) below and be provided with container (6), container is provided with liquid level regulation device on (6), it is characterized in that: above measuring suspension ring (4), set up adjusting suspension ring (7), on the sidewall of adjusting suspension ring (7), offer 3 equally distributed horizontal through hole, horizontal through hole place offers vertical curve hole (8), vertical curve hole (8) is communicated with horizontal through hole, in horizontal through hole, be provided with control hand wheel, suspension wire (5) reverse-winding is on control hand wheel, the break-through vertical curve hole, one end (8) of suspension wire (5) is fixedly connected with silicon pressure resistance dependent sensor (3), the other end break-through vertical curve hole (8) of suspension wire (5) is fixedly connected with measurement suspension ring (4), control hand wheel is rotatably assorted with regulating suspension ring (7) formation, on the inwall of measurement suspension ring (4), be fixed with circular location-plate (9), circular location-plate (9) is parallel with the lower surface of measuring suspension ring (4) and be positioned at above lower surface, on circular location-plate (9), be fixed with level meter (10), described liquid level regulation device comprises the mozzle (11) being communicated with container (6), mozzle (11) with connect liquid container (12) and be communicated with, on mozzle (11), be provided with water drain valve (13).
2. a kind of new liquid surface tension coefficient analyzer according to claim 1, it is characterized in that: described control hand wheel comprises rotating shaft (15), one end of rotating shaft (15) is fixed with handle (16), in rotating shaft (15), offer circular through hole as through wires hole (17), suspension wire (5) break-through through wires hole (17) reverse-winding are in rotating shaft (15).
3. a kind of new liquid surface tension coefficient analyzer according to claim 1, is characterized in that: described container (6) is heated at constant temperature instrument.
4. a kind of new liquid surface tension coefficient analyzer according to claim 1, is characterized in that: described robot scaling equipment comprises the scale pan, the counterweight that are placed on measurement suspension ring (4) upper surface.
5. a kind of new liquid surface tension coefficient analyzer according to claim 1, is characterized in that: described analyzer also comprises the hook (14) being fixedly connected with silicon pressure resistance dependent sensor (3), and suspension wire (5) hangs on hook (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179451.1U CN203858181U (en) | 2014-04-14 | 2014-04-14 | Novel liquid surface tension coefficient tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179451.1U CN203858181U (en) | 2014-04-14 | 2014-04-14 | Novel liquid surface tension coefficient tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203858181U true CN203858181U (en) | 2014-10-01 |
Family
ID=51608027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179451.1U Expired - Fee Related CN203858181U (en) | 2014-04-14 | 2014-04-14 | Novel liquid surface tension coefficient tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203858181U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964900A (en) * | 2015-08-05 | 2015-10-07 | 湖南城市学院 | Lifting ring for liquid surface tension coefficient measuring experiment |
| CN108267386A (en) * | 2018-01-12 | 2018-07-10 | 长沙雁飞电子科技有限公司 | Liquid surface tension measuring instrument |
| CN110376103A (en) * | 2019-07-10 | 2019-10-25 | 金华职业技术学院 | A kind of Surface Tension of Liquid Drops test device |
| CN111323340A (en) * | 2020-03-12 | 2020-06-23 | 青岛理工大学 | Device for measuring surface tension of liquid |
| CN113376059A (en) * | 2021-05-11 | 2021-09-10 | 南京航空航天大学 | STM32 singlechip intelligent control-based liquid surface tension meter and use method thereof |
-
2014
- 2014-04-14 CN CN201420179451.1U patent/CN203858181U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964900A (en) * | 2015-08-05 | 2015-10-07 | 湖南城市学院 | Lifting ring for liquid surface tension coefficient measuring experiment |
| CN108267386A (en) * | 2018-01-12 | 2018-07-10 | 长沙雁飞电子科技有限公司 | Liquid surface tension measuring instrument |
| CN110376103A (en) * | 2019-07-10 | 2019-10-25 | 金华职业技术学院 | A kind of Surface Tension of Liquid Drops test device |
| CN110376103B (en) * | 2019-07-10 | 2024-04-09 | 金华职业技术学院 | Liquid drop surface tension testing device |
| CN111323340A (en) * | 2020-03-12 | 2020-06-23 | 青岛理工大学 | Device for measuring surface tension of liquid |
| CN113376059A (en) * | 2021-05-11 | 2021-09-10 | 南京航空航天大学 | STM32 singlechip intelligent control-based liquid surface tension meter and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141001 Termination date: 20160414 |