CN208283148U - A kind of sample preparation device for soil moisture meter calibration - Google Patents
A kind of sample preparation device for soil moisture meter calibration Download PDFInfo
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- CN208283148U CN208283148U CN201820986685.5U CN201820986685U CN208283148U CN 208283148 U CN208283148 U CN 208283148U CN 201820986685 U CN201820986685 U CN 201820986685U CN 208283148 U CN208283148 U CN 208283148U
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Abstract
The utility model discloses a kind of sample preparation devices for soil moisture meter calibration, including the soil body sample preparation cylinder for holding the soil body and the firming piston matched with soil body sample preparation cylinder, the lower part of soil body sample preparation cylinder is provided with fluid-tight bottom plate or the sink with filter plate, firming piston includes the pressed discs of bottom and the force disk on top, pressed discs and force disk are disk, it is connected with force-transmitting pole between pressed discs and force disk, force-transmitting pole is cylindrical structure；Soil body sample preparation cylinder is cylindrical transparent organic glass sleeve, is provided with the graduation mark being measured to soil body volume on soil body sample preparation cylinder.The utility model is by being arranged matched soil body sample preparation cylinder and firming piston, it can obtain the molding soil sample of moisture and even density, by opening up filtration hole on filter plate, and soil body sample preparation cylinder is connected to sink by filtration hole, soil sample under saturation state can be made, the soil moisture content under accurate saturation state can be obtained.
Description
Technical field
The utility model belongs to geotechnical engineering investigation and detection technique field, is used for soil moisture meter more particularly, to one kind
The sample preparation device of calibration.
Background technique
Soil moisture meter is the instrument for measuring soil's water content indirectly using the change in dielectric constant of measurement soil.Due to soil
Dielectric constant by soil property, Effects of Density, the soil body of different regions is variant, public using the general calibration built in soil moisture meter
Formula carries out soil's water content test, often has biggish test error, to obtain higher measuring accuracy, then needs to soil
Moisture meter is demarcated.Scaling method is divided into field calibration and two kinds of indoor standardization.Field calibration method is equal because calibration soil layer
One property is difficult to ensure, and malleable moisture content does not change in a big way, current less use.Indoor standardization method is to pass through
Certain dry density, moisture content calibration soil sample are prepared, soil moisture meter is respectively adopted and oven drying method carries out water cut test, then leads to
Correlativity between soil moisture meter test value and indoor oven drying method test value is crossed, the regression equation of two class data is established, to soil
Earth moisture data is corrected.Indoor standardization test is more demanding to preparing for calibration soil sample, it is necessary to assure soil sample moisture is uniform
Distribution, sample density uniformity, otherwise will affect calibration effect.Due to lacking soil moisture meter rating test device, at present
When carrying out the calibration preparation of soil sample, usually simply the earth material of certain moisture content is fitted into container, though it can guarantee uniform moisture,
But density of soil sample is uniform compared with being difficult to guarantee, and the dry density of sample not easy to control changes in the larger context.In production sample side
Face, when density of soil sample is higher, sample is not easy into if without special sample preparation device in the lower and higher situation of moisture content
Type, it is difficult to measure accurate moisture content result.In addition, to soil moisture meter carry out it is saturated aqueous under the conditions of calibration when, generally
Sample is made by empirically determined soil moisture content, or is not only absorbed water by the naked-eye observation soil body and just thought to reach saturation shape
State, but may and practical saturation state have deviation, there is a situation where not up to fully saturated, soil moisture meter caused to contain in saturation
Calibrated error under water rate is larger.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide one kind to be used for
The sample preparation device of soil moisture meter calibration, by the way that matched soil body sample preparation cylinder and firming piston is arranged, can obtain moisture and
Soil body sample preparation cylinder is connected to by the molding soil sample of even density by opening up filtration hole on filter plate, and by filtration hole with sink,
Soil sample under saturation state can be made, the soil moisture content under accurate saturation state can be obtained.
In order to solve the above technical problems, the technical solution adopted in the utility model is: one kind is demarcated for soil moisture meter
Sample preparation device, it is characterised in that: matched including the soil body sample preparation cylinder for holding the soil body and with the soil body sample preparation cylinder
Firming piston, the lower part of the soil body sample preparation cylinder are provided with fluid-tight bottom plate or the sink with filter plate, the firming piston
The force disk of pressed discs and top including bottom, the pressed discs and force disk are disk, the pressed discs and force disk
Between be connected with force-transmitting pole, the force-transmitting pole is cylindrical structure；The soil body sample preparation cylinder is cylindrical transparent organic glass set
Tin, graduation mark is provided on the soil body sample preparation cylinder.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the filter plate is mounted on sink
Top, the upper surface of the filter plate and the notch of sink are concordant, and multiple filtration holes, the soil body sample preparation are provided on the filter plate
Cylinder is connected to by filtration hole with sink, and filter paper is equipped on the filter plate, and the soil body sample preparation cylinder and sink are bolted,
The lower part of the soil body sample preparation cylinder and the top of sink are provided with the convex edge for bolt installation, and the side of the sink is provided with
One upper lateral part of water discharging valve, the sink is connected with exhaust pipe.
A kind of above-mentioned sample preparation device for soil moisture meter calibration, it is characterised in that: the upper end of the exhaust pipe with
The upper end of soil body sample preparation cylinder is concordant.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the sink has for cylinder
The internal diameter of machine glass guide channel, the sink is identical as the internal diameter of soil body sample preparation cylinder.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the filter plate and sink processing
Production is integrated.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the filtration hole is round logical
Hole, the aperture of the filtration hole are 1.5mm~2.5mm.
A kind of above-mentioned sample preparation device for soil moisture meter calibration, it is characterised in that: the pressed discs, force disk and
Force-transmitting pole is laid in coaxial, the pressed discs and soil body sample preparation cylinder clearance fit, and the diameter of the force disk is greater than soil body sample preparation
The outer diameter of cylinder, the diameter of the force-transmitting pole are not more than the diameter of force disk.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the bottom plate is round impermeable
Level board, the diameter of the bottom plate are greater than the outer diameter of soil body sample preparation cylinder.
Above-mentioned a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: the bottom plate and soil body sample preparation
It is bolted between cylinder.
Compared with the prior art, the utility model has the following advantages:
1, the utility model is carrying out soil sample production by the way that firming piston matched with its is arranged on soil body sample preparation cylinder top
When, it can not only guarantee that uniform moisture is distributed, density of soil sample is made to keep uniformity.It is aqueous meanwhile when density of soil sample is higher
Soil sample can be made to form in the lower and higher situation of rate, measure accurate moisture content with soil moisture meter convenient for subsequent.
2, the utility model is matched by the way that graduation mark is arranged on soil body sample preparation cylinder, and with soil body sample preparation cylinder and firming piston
Sample preparation is closed, the volume of soil sample can be precisely controlled, convenient for calculating soil body dry density and volumetric water content, is improved work efficiency.
3, soil body sample preparation cylinder is connected to sink by opening up filtration hole on filter plate, can make saturation by the utility model
Soil sample can obtain the soil moisture content under accurate saturation state, and the accuracy for the calibration of subsequent soil moisture meter mentions
For reliably guaranteeing, reduce soil moisture meter calibrated error.
In conclusion the utility model by the way that matched soil body sample preparation cylinder and firming piston is arranged, can obtain moisture and
Soil body sample preparation cylinder is connected to by the molding soil sample of even density by opening up filtration hole on filter plate, and by filtration hole with sink,
Soil sample under saturation state can be made, the soil moisture content under accurate saturation state can be obtained, after capable of effectively improving
The accuracy of continuous soil moisture meter calibration.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural schematic diagram of the utility model embodiment 2.
Fig. 3 is the usage state diagram of the utility model embodiment 1.
Fig. 4 is the usage state diagram of the utility model embodiment 2.
Fig. 5 is the structural schematic diagram of 1 filter plate of the utility model embodiment.
Description of symbols:
1-soil body sample preparation cylinder；2-bolts；3-the soil bodys；
4-firming pistons；4-1-pressed discs；4-2-force disk；
4-3-force-transmitting pole；5-sinks；5-1-water discharging valve；
5-2-exhaust pipe；6-filter plates；6-1-filtration hole；
7-coarse sands layers；8-bottom plates；9-soil moisture meters；
10-saturation soil samples；11-unsaturated soil samples.
Specific embodiment
Embodiment 1
A kind of sample preparation device for soil moisture meter calibration as shown in Figure 1, including the soil body system for holding the soil body 3
Sample cylinder 1 and the firming piston 4 matched with the soil body sample preparation cylinder 1, the lower part of the soil body sample preparation cylinder 1 are provided with filter plate
6 sink 5, the firming piston 4 include the pressed discs 4-1 of bottom and force the disk 4-2, the pressed discs 4-1 on top and apply
Power disk 4-2 is disk, and force-transmitting pole 4-3 is connected between the pressed discs 4-1 and force disk 4-2, and the force-transmitting pole 4-3 is circle
Column construction；The soil body sample preparation cylinder 1 is cylindrical transparent organic glass sleeve, is provided with scale on the soil body sample preparation cylinder 1
Line.
In actual use, by the way that firming piston 4 matched with its is arranged on 1 top of soil body sample preparation cylinder, in the soil sample system of progress
When making, it can not only guarantee that uniform moisture is distributed, the density of soil sample is made to keep uniformity.It can make different water cut simultaneously
The preparation of soil sample measures accurate moisture content with soil moisture meter 9 convenient for subsequent at the sample of required dry density.
It is made by the way that the graduation mark is arranged on soil body sample preparation cylinder 1, and with soil body sample preparation cylinder 1 and the cooperation of firming piston 4
Sample can be precisely controlled the volume of the soil sample, convenient for calculating 3 dry density of the soil body and volumetric water content, improve work efficiency.
As shown in Figure 1 and Figure 5, in the present embodiment, the filter plate 6 is mounted on 5 top of sink, the upper surface of the filter plate 6
It is concordant with the notch of sink 5, multiple filtration hole 6-1 are provided on the filter plate 6, the soil body sample preparation cylinder 1 passes through filtration hole 6-1
It is connected to sink 5, filter paper, the soil body sample preparation cylinder 1 and sink 5 is equipped on the filter plate 6 and is connected by bolt 2, the soil
The lower part of system sample cylinder 1 and the top of sink 5 are provided with the convex edge installed for bolt 2, and the side of the sink 5 is provided with row
Penstock 5-1, a upper lateral part of the sink 5 are connected with exhaust pipe 5-2.
In actual use, the convex edge is that 1 lower part of soil body sample preparation cylinder is arranged in and the annulus on 5 top of sink, institute is arranged in
It states annulus to be integrated with 1 processing and fabricating of soil body sample preparation cylinder, the annulus is integrated with 5 processing and fabricating of sink.
It should be noted that soil body sample preparation cylinder 1 is connected to sink 5, can be made by opening up filtration hole 6-1 on filter plate 6
Make saturation soil sample 10, the soil moisture content under accurate saturation state can be obtained, is marked for the subsequent soil moisture meter 9
Fixed accuracy provides reliable guarantee, reduces 9 calibrated error of soil moisture meter.
In the present embodiment, the upper end of the exhaust pipe 5-2 is concordant with the upper end of soil body sample preparation cylinder 1.
In the present embodiment, the sink 5 is cylindrical organic glass slot, internal diameter and the soil body sample preparation cylinder 1 of the sink 5
Internal diameter is identical.
In the present embodiment, the filter plate 6 and 5 processing and fabricating of sink are integrated.
In the present embodiment, the filtration hole 6-1 is circular through hole, and the aperture of the filtration hole 6-1 is 1.5mm~2.5mm.
In actual use, the aperture of the filtration hole 6-1 is preferably 2mm.It, can in the case where guaranteeing infiltration
Certain blocking is carried out to the soil body 3.
In the present embodiment, the pressed discs 4-1, force disk 4-2 and force-transmitting pole 4-3 are laid in coaxial, the pressed discs 4-1
It is greater than the outer diameter of soil body sample preparation cylinder 1, the force-transmitting pole 4-3 with the diameter of 1 clearance fit of soil body sample preparation cylinder, the force disk 4-2
Diameter no more than force disk 4-2 diameter.
In actual use, it is moved in soil body sample preparation cylinder 1 for the ease of firming piston 4, the diameter ratio of the pressed discs 4-1
Small 2mm~the 3mm of internal diameter of soil body sample preparation cylinder 1.In order to ensure the stabilization of the flatness of soil body surface and pressing process in firming
Property, the diameter of the force-transmitting pole 4-3 is slightly less than the diameter of force disk 4-2, i.e., the diameter and force-transmitting pole 4-3 of the described force disk 4-2
Difference in diameter be no more than 10mm.
As shown in figures 1 and 3, in actual use, soil body sample preparation cylinder 1, filter plate 6 and the bolt 2 of sink 5 are connected as one
Body, and it is laid with filter paper on filter plate 6, prevent the soil body 3 from bringing sink 5 by water, 5 side discharge valve 5-1 of sink is closed.It will be certain
The uniformly mixed soil body 3 of weight is put into soil body sample preparation cylinder 1, and takes after the soil body 3 is pressed into certain altitude with firming piston 4
Firming piston 4 out is laid with one layer of filter paper on 3 top of the soil body, the probe of soil moisture meter 9 is entirely insertable in the soil body 3, then
Coarse sands layer 7 is uniformly laid on the filter paper, it is ensured that the soil body 3 is not disturbed.Above coarse sands layer 7 extremely with slow-flowing stream injection water
In soil body sample preparation cylinder 1, using undisturbed sample as standard, and 5cm~10cm head above the soil body is kept, until being full of in sink 5
Water, it is believed that the soil body is in a saturated state at this time, obtains saturation soil sample 10.Simultaneously institute can be measured by the soil moisture meter 9
State the moisture content of saturation soil sample 10.After measurement, soil moisture meter 9 is extracted, the moisture being saturated above soil sample 10 is sopped up,
Soil is taken at the probe inserted position of soil moisture meter 9 and is measured its quality moisture content using oven drying method and is scaled volume of aqueous
Rate.The volumetric water content result that the volumetric water content and oven drying method measure soil moisture meter 9 converts is fitted analysis,
The calibration to soil moisture meter 9 can be realized.
Embodiment 2
A kind of sample preparation device for soil moisture meter calibration as shown in Figure 2, including the soil body system for holding the soil body 3
Sample cylinder 1 and the firming piston 4 matched with the soil body sample preparation cylinder 1, the lower part of the soil body sample preparation cylinder 1 are provided with fluid-tight
Bottom plate 8, the firming piston 4 include the pressed discs 4-1 of bottom and force the disk 4-2, the pressed discs 4-1 on top and force disk
4-2 is disk, and force-transmitting pole 4-3 is connected between the pressed discs 4-1 and force disk 4-2, and the force-transmitting pole 4-3 is cylinder
Structure；The soil body sample preparation cylinder 1 is cylindrical transparent organic glass sleeve, is provided with graduation mark on the soil body sample preparation cylinder 1.
In the present embodiment, the pressed discs 4-1, force disk 4-2 and force-transmitting pole 4-3 are laid in coaxial, the pressed discs 4-1
It is greater than the outer diameter of soil body sample preparation cylinder 1, the force-transmitting pole 4-3 with the diameter of 1 clearance fit of soil body sample preparation cylinder, the force disk 4-2
Diameter no more than force disk 4-2 diameter.
In the present embodiment, the bottom plate 8 is round impermeable level board, and the diameter of the bottom plate 8 is greater than soil body sample preparation cylinder 1
Outer diameter.
In the present embodiment, connected between the bottom plate 8 and soil body sample preparation cylinder 1 by bolt 2.
As shown in Figure 2 and Figure 4, in actual use, soil sample sample preparation cylinder 1 is connect with bottom plate 8 by bolt 2, will be centainly weighed
The soil body 3 and water of amount are uniformly mixed and are placed in sample preparation cylinder 1, using firming piston 4 by mixed 3 compression moulding of the soil body, obtain
To unsaturated soil sample 11.After 3 compression moulding of the soil body, remove firming piston 4, by the soil moisture meter 9 be inserted into it is described not
It is saturated in soil sample 11, can measure the moisture content of the unsaturated soil sample 11.It is taken at the probe inserted position of soil moisture meter 9
Soil, and measure its quality moisture content using oven drying method and be scaled volumetric water content.The volume of aqueous that soil moisture meter 9 is measured
The volumetric water content result that rate and oven drying method convert is fitted analysis, and the calibration to soil moisture meter 9 can be realized.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (9)
1. a kind of sample preparation device for soil moisture meter calibration, it is characterised in that: including the soil body system for holding the soil body (3)
Sample cylinder (1) and the firming piston (4) matched with the soil body sample preparation cylinder (1), the lower part of the soil body sample preparation cylinder (1) are provided with
Fluid-tight bottom plate (8) or have filter plate (6) sink (5), the firming piston (4) include bottom pressed discs (4-1) and
The force disk (4-2) on top, the pressed discs (4-1) and force disk (4-2) are disk, the pressed discs (4-1) and force
It is connected between disk (4-2) force-transmitting pole (4-3), the force-transmitting pole (4-3) is cylindrical structure；The soil body sample preparation cylinder (1) is
Cylindrical transparent organic glass sleeve is provided with graduation mark on the soil body sample preparation cylinder (1).
2. a kind of sample preparation device for soil moisture meter calibration described in accordance with the claim 1, it is characterised in that: the filter plate
(6) it is mounted on sink (5) top, the upper surface of the filter plate (6) is concordant with the notch of sink (5), is arranged on the filter plate (6)
Have multiple filtration holes (6-1), the soil body sample preparation cylinder (1) is connected to by filtration hole (6-1) with sink (5), on the filter plate (6)
It is equipped with filter paper, the soil body sample preparation cylinder (1) and sink (5) to connect by bolt (2), the lower part of the soil body sample preparation cylinder (1)
It is provided with the convex edge for bolt (2) installation with the top of sink (5), the side of the sink (5) is provided with water discharging valve (5-
1), a upper lateral part of the sink (5) is connected with exhaust pipe (5-2).
3. a kind of sample preparation device for soil moisture meter calibration according to claim 2, it is characterised in that: the exhaust
The upper end for managing (5-2) is concordant with the upper end of soil body sample preparation cylinder (1).
4. a kind of sample preparation device for soil moisture meter calibration according to claim 1 or 2, it is characterised in that: described
Sink (5) is cylindrical organic glass slot, and the internal diameter of the sink (5) is identical as the internal diameter of soil body sample preparation cylinder (1).
5. a kind of sample preparation device for soil moisture meter calibration according to claim 1 or 2, it is characterised in that: described
Filter plate (6) and sink (5) processing and fabricating are integrated.
6. a kind of sample preparation device for soil moisture meter calibration according to claim 2, it is characterised in that: the drainage
Hole (6-1) is circular through hole, and the aperture of the filtration hole (6-1) is 1.5mm~2.5mm.
7. a kind of sample preparation device for soil moisture meter calibration described in accordance with the claim 1, it is characterised in that: the compacting
Disk (4-1), force disk (4-2) and force-transmitting pole (4-3) are laid in coaxial, the pressed discs (4-1) and soil body sample preparation cylinder (1) gap
The diameter of cooperation, force disk (4-2) is greater than the outer diameter of soil body sample preparation cylinder (1), and the diameter of the force-transmitting pole (4-3) is not more than
The diameter of force disk (4-2).
8. a kind of sample preparation device for soil moisture meter calibration described in accordance with the claim 1, it is characterised in that: the bottom plate
It (8) is round impermeable level board, the diameter of the bottom plate (8) is greater than the outer diameter of soil body sample preparation cylinder (1).
9. a kind of sample preparation device for soil moisture meter calibration described in accordance with the claim 1, it is characterised in that: the bottom plate
(8) it is connect between soil body sample preparation cylinder (1) by bolt (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986685.5U CN208283148U (en) | 2018-06-26 | 2018-06-26 | A kind of sample preparation device for soil moisture meter calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986685.5U CN208283148U (en) | 2018-06-26 | 2018-06-26 | A kind of sample preparation device for soil moisture meter calibration |
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| Publication Number | Publication Date |
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| CN208283148U true CN208283148U (en) | 2018-12-25 |
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ID=64699374
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589632A (en) * | 2024-01-18 | 2024-02-23 | 山西金宝岛基础工程有限公司 | Method for testing water content in foundation water injection humidifying process through dynamic compaction |
-
2018
- 2018-06-26 CN CN201820986685.5U patent/CN208283148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589632A (en) * | 2024-01-18 | 2024-02-23 | 山西金宝岛基础工程有限公司 | Method for testing water content in foundation water injection humidifying process through dynamic compaction |
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