CN208140702U - Simulate the experimental system of salt ion migration in soil - Google Patents

Simulate the experimental system of salt ion migration in soil Download PDF

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Publication number
CN208140702U
CN208140702U CN201820613808.0U CN201820613808U CN208140702U CN 208140702 U CN208140702 U CN 208140702U CN 201820613808 U CN201820613808 U CN 201820613808U CN 208140702 U CN208140702 U CN 208140702U
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China
Prior art keywords
soil
experimental
containers
salt ion
salting liquid
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CN201820613808.0U
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Chinese (zh)
Inventor
赵海超
臧榕
赵海香
乔赵崇
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赵海超
臧榕
赵海香
乔赵崇
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Abstract

The utility model provides a kind of experimental system for simulating salt ion migration in soil, the experimental system carries out pumping to the device that storage has soil by air extractor and forms vacuum, moisture pulling force is generated, migrates salting liquid towards the direction of soil, thus the evaporation pulling force of analog soil moisture;Experimental system can adjust the height of salting liquid storing unit by elevating mechanism simultaneously, to change the size for the pressure difference that salting liquid water body generates, the salt ion transition state under the conditions of different evaporation pulling force is simulated, the Transport of different salt ions under the conditions of different evaporation pulling force is studied for researcher.

Description

Simulate the experimental system of salt ion migration in soil
Technical field
The utility model belongs to agrology, environmental science scope, and in particular to one kind is transported for simulating salt ion in soil The experimental system of shifting.
Background technique
The salinization of soil is one of the environmental problem faced in current global range.The formation mechenism of the salinization of soil is main It is the salt ion (Na because in soil+、Mg2+Equal metal ions) under soil evaporation effect with moisture to global migration, moisture It can be scattered and disappeared by evaporation after reaching earth's surface, and salt ion is then enriched in upper soll layer, forms salinization of soil phenomenon.With agricultural Fertilizer amount continue to increase and the use of level of ground water decline and unreasonable irrigation practice, current agricultural land soil is saline and alkaline Change degree is in the trend development gradually to aggravate.Salt ion can make soil hardening in upper soll layer enrichment, to change soil Physicochemical character influences the conversion of crop growth and soil nutrient.
Recent domestic has carried out a large amount of research work, soil to the harm of soil salt ion, Transport And Transformation process The research of salt ion transition process has become the hot issue of the area research.But currently, the prior art, which still lacks, to be had The experimental provision of effect simulation soil salt ion transition process in the soil, this causes to be difficult to carry out soil salt ion in laboratory to move The simulated experiment of shifting makes technical staff be difficult to carry out a large amount of mechanism Mechanism Study.
Utility model content
What the utility model solved is the experiment for lacking simulation soil salt ion transition process in the soil in the prior art The technical issues of device, and then a kind of experiment that can effectively simulate soil salt Ion transfer, be suitable for experimental study is provided System.
The technical scheme in the invention for solving the above technical problem is:
The experimental system of salt ion migration in a kind of simulation soil, including:Salting liquid storing unit, the salting liquid storage Device is provided with the first storage chamber for storing salting liquid, is provided with opening on first storage chamber;Elevating mechanism, with The salting liquid storing unit connection setting, is suitable for that the salting liquid storing unit is driven back and forth to be moved along the vertical direction It is dynamic;Soil storing unit, the soil storing unit are provided with the second storage chamber for storing soil;In second storage One end of chamber is provided with inlet, and the inlet is connected to setting with the bottom end of first storage chamber by flexible duct;? The other end of second storage chamber is provided with bleeding point;In described second between the inlet and the bleeding point Closeable sample acquisition port is provided on the wall surface of storage chamber;Air extractor, the air extractor pass through pump-line and institute State bleeding point connection setting.
The soil storing unit includes:Containers of soil, the containers of soil form second storage chamber, the soil The top end opening of earth container is arranged, and the bottom end of the containers of soil is provided with the inlet;Cover is filtered, it is closed to be mounted on institute It states at the top end opening of containers of soil, is provided with the bleeding point on suction filtration cover.
The suction filtration enclosure is located on the outer wall of the containers of soil, in the connection for filtering cover with the containers of soil Place is provided with sealing ring.
Annular groove is provided on the outer wall of the containers of soil, the annular groove is located at the outer of the containers of soil Between wall and the inner wall for filtering cover, the sealing ring is mounted in the annular groove.
The sample acquisition port is provided with multiple, and multiple sample acquisition ports are on the side wall of the containers of soil along perpendicular Histogram is to setting gradually.
Valve is provided in each sample acquisition port.
Net-like spacer is provided at the inlet.
It is additionally provided with the sample collection bottle for collecting sample from the sample acquisition port.
The salting liquid storing unit includes salting liquid container, and the salting liquid container formation has first storage chamber.
Annular line is provided on the salting liquid container and the inner wall of the containers of soil.
The advantages of experimental system of salt ion migration, is in simulation soil described in the utility model:
(1) in simulation soil described in the utility model salt ion migration experimental system, by air extractor to depositing The device for being placed with soil carries out pumping and forms vacuum, generates moisture pulling force, migrates salting liquid towards the direction of soil, so as to Simulate the evaporation pulling force of soil moisture;The application changes the height of salting liquid storing unit by elevating mechanism simultaneously, can be changed The size for the pressure difference that salting liquid water body generates, so that the salt ion transition state under the conditions of different evaporation pulling force is simulated, The Transport of different salt ions under the conditions of different evaporation pulling force is studied for researcher.
(2) experimental system that salt ion is migrated in simulation soil described in the utility model, the preferably described sample acquisition Mouth is provided with multiple, and multiple sample acquisition ports are set gradually along the vertical direction on the side wall of the containers of soil.This Kind set-up mode makes in experiment, and the salt ion in aqueous solution that the sample acquisition port by detecting different height releases is dense Degree, can further calculate out the migration velocity of salt ion.
(3) experimental system that salt ion is migrated in simulation soil described in the utility model, sets at the inlet It is equipped with net-like spacer, the net-like spacer plays a supporting role to the pedotheque in containers of soil, prevents soil from sinking Or reflux.
(4) experimental system that salt ion is migrated in simulation soil described in the utility model, further preferably described Annular line is provided on salting liquid container and the inner wall of the containers of soil, the annular line can be eliminated caused by solution impregnation Wall surface at solution flow " boundary effect " deposited, improve the precision of experiment.
In order to keep the technical solution of the experimental system of salt ion migration in simulation soil described in the utility model more clear Chu Mingbai, below in conjunction with specific drawings and the specific embodiments, the present invention will be further described in detail.
Detailed description of the invention
It is the schematic diagram of the experimental system of salt ion migration in simulation soil described in the utility model as shown in Figure 1;
It is the structural schematic diagram described in the utility model for filtering cover and distribution device as shown in Figure 2;
Wherein appended drawing reference is:
11- salting liquid storing unit;12- liquid outlet;
21- containers of soil;22- filters cover;23- exhaust tube;231- distribution device;24- valve;25- net-like spacer;26- Inlet;
3- elevating mechanism;
4- flexible duct.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that Like that, without departing from the spirit or scope of the present utility model, it can be modified by various different modes described real Apply example.Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
In following specific embodiments, " top " " bottom end " when being related to orientation be for vertical direction, It is top that the experimental system is located at the top on vertical direction when in use, otherwise is bottom end.
Present embodiments provide for a kind of experimental systems of salt ion migration in simulation soil, as shown in Figure 1, the experiment System includes:
Salting liquid storing unit 11, salting liquid storing unit 11 described in present embodiment is salting liquid container, described Salting liquid container is provided with the first storage chamber for storing salting liquid, is provided with opening on first storage chamber;As Selectable embodiment, salting liquid container described in present embodiment are a hollow cylinder, the top of the hollow cylinder End is provided with opening, and the bottom end of the hollow cylinder is provided with liquid outlet 12.
Elevating mechanism 3 connect setting with the salting liquid storing unit 11, is suitable for driving the salting liquid storing unit 11 move back and forth along the vertical direction;Elevating mechanism 3 described in present embodiment is screw lift, is gone up and down with the screw rod Machine is connected with motor driver, for driving the screw lift that the salting liquid storing unit 11 is driven to be risen Drop.
Soil storing unit, soil storing unit described in present embodiment include:Containers of soil 21, the containers of soil 21 form second storage chamber, one end of second storage chamber are provided with inlet 26, the inlet 26 passes through Flexible duct 4 is connected to setting with the liquid outlet 12 of the bottom end of the salting liquid container, and flexible duct 4 described in present embodiment is Silica gel pipeline;To prevent soil settlement or reflux, present embodiment is provided with net-like spacer 25 at the inlet 26.This reality It applies containers of soil 21 described in mode and is likewise provided as hollow cylinder, the bottom of the containers of soil 21 is arranged in the inlet 26 End, the top opening setting of the containers of soil 21;The soil storing unit is additionally provided with suction filtration cover 22, the suction filtration cover 22 At the closed top end opening for being mounted on the containers of soil 21, the bleeding point is provided on suction filtration cover.It is being located at institute It states and is provided with closeable sample acquisition port on the wall surface of second storage chamber between inlet 26 and the bleeding point.Make For preferred embodiment, the sample acquisition port is provided with multiple, and multiple sample acquisition ports are in the containers of soil 21 Side wall on set gradually along the vertical direction, consequently facilitating being sampled in different height, each described in present embodiment Valve 24 is provided in sample acquisition port, to control the opening and closing of the sample acquisition port.
Air extractor, the air extractor are vacuum pump;The air extractor is connected by exhaust tube 23 and the bleeding point Logical setting.As preferred embodiment, suction filtration cover described in present embodiment 22 is set in the outer wall of the containers of soil 21 On, the junction for filtering cover 22 and the containers of soil 21 is provided with sealing ring.The set-up mode of the sealing ring is: Be provided with annular groove on the outer wall of the containers of soil 21, the annular groove be located at the outer wall of the containers of soil 21 with Between the inner wall for filtering cover 22, the sealing ring is mounted in the annular groove.
In present embodiment, it is provided on the salting liquid container and the side wall of the containers of soil 21 for indicating body Long-pending and height scale.As preferred mode, also set up on the salting liquid container and the inner wall of the containers of soil 21 There is annular line.The annular line is suitably any one in annular groove or annular protrusion, and the annular line is further preferred Along multi-turn is provided with, it is interior that annular line described in multi-turn is arranged in the salting liquid container/containers of soil 21 along the vertical direction On wall.
It is equally used as preferred embodiment, exhaust tube 23 described in present embodiment extends to institute by the bleeding point The inside setting for filtering cover 22 is stated, and the exhaust tube 23 is located at the outlet filtered inside cover 22 and is arranged along the vertical direction, The outgassing direction of the i.e. described exhaust tube 23 is arranged along the vertical direction;The lower section of the exhaust tube 23 is provided with a distribution device 231, the distribution device 231 is air distribution plate, recessed towards being provided on one side for the outlet of the exhaust tube 23 in the air distribution plate Face, the concave surface are a part of spherical surface, and the air distribution plate setting is in suction filtration cover 22, the air distribution plate and the suction filtration Gas passage is formed between the inner wall of cover 22.The effect of the air distribution plate is to prevent exhaust tube 23 from directly carrying out pedotheque Pumping, prevents fine grain pedotheque and takes away with air-flow, or pumping concentration leads to the non-uniform problem of pressure.
The process of simulated experiment is carried out using the experimental system of salt ion migration in simulation soil described in present embodiment For:
(1) pedotheque is placed in the containers of soil 21;Saline sample is placed in the salting liquid container, institute Stating saline sample can be single salting liquid, or the mixing of a variety of salting liquids, such as the mixing of sodium salt and magnesium salt solution Solution.
(2) vacuumize process is carried out to the containers of soil 21 by air extractor, generates moisture pulling force, simulate the soil water The evaporation pulling force divided, moisture is migrated from salting liquid container to containers of soil 21 at this time, drives salt ion migration.
(3) timing is carried out using time set, water is calculated according to the scale of the liquid level of solution decline in salting liquid container Divide the amount of migration;Solution, the salt in solution released according to the sample acquisition port at different height are acquired by sample acquisition port Ion concentration calculates the migration velocity of salt ion.According to water translocation amount and salt ion the amount of migration, calculates salt ion and moved with moisture The relationship of shifting, so as to analyze the quantity relative ratio relationship of soil water evaporation amount Yu salt ion enriching quantity.In addition, can also Simultaneous Determination soil The variation of nutrient density in earth, to study salt ion migration to the affecting laws of Soil nutrient movement.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.Therefore, the protection scope of the utility model patent should be subject to the claims.

Claims (10)

1. the experimental system of salt ion migration in a kind of simulation soil, which is characterized in that including:
Salting liquid storing unit, the salting liquid storing unit is provided with the first storage chamber for storing salting liquid, described Opening is provided on first storage chamber;
Elevating mechanism connect setting with the salting liquid storing unit, is suitable for driving the salting liquid storing unit along vertical Direction moves back and forth;
Soil storing unit, the soil storing unit are provided with the second storage chamber for storing soil;It is deposited described second The one end for putting chamber is provided with inlet, and the inlet is connected to setting with the bottom end of first storage chamber by flexible duct; The other end of second storage chamber is provided with bleeding point;In described between the inlet and the bleeding point Closeable sample acquisition port is provided on the wall surface of two storage chambers;
Air extractor, the air extractor are connected to setting with the bleeding point by pump-line.
2. the experimental system of salt ion migration in simulation soil according to claim 1, which is characterized in that the soil is deposited Putting device includes:Containers of soil, the containers of soil form second storage chamber, and the top end opening of the containers of soil is set It sets, the bottom end of the containers of soil is provided with the inlet;
It filters and covers, at the closed top end opening for being mounted on the containers of soil, be provided with the bleeding point on suction filtration cover.
3. the experimental system of salt ion migration in simulation soil according to claim 2, which is characterized in that the suction filtration cover It is set on the outer wall of the containers of soil, the junction for filtering cover and the containers of soil is provided with sealing ring.
4. the experimental system of salt ion migration in simulation soil according to claim 3, which is characterized in that in the soil Annular groove is provided on the outer wall of container, the outer wall that the annular groove is located at the containers of soil filters the interior of cover with described Between wall, the sealing ring is mounted in the annular groove.
5. the experimental system of salt ion migration in simulation soil according to claim 4, which is characterized in that the sample is adopted Ji Kou is provided with multiple, and multiple sample acquisition ports are set gradually along the vertical direction on the side wall of the containers of soil.
6. the experimental system of salt ion migration in simulation soil according to claim 5, which is characterized in that each described Valve is provided in sample acquisition port.
7. the experimental system that salt ion is migrated in -6 any simulation soil according to claim 1, which is characterized in that in institute It states and is provided with net-like spacer at inlet.
8. the experimental system of salt ion migration in simulation soil according to claim 1, which is characterized in that be additionally provided with use In the sample collection bottle for collecting sample from the sample acquisition port.
9. the experimental system of salt ion migration in simulation soil according to claim 2, which is characterized in that the salting liquid Storing unit includes salting liquid container, and the salting liquid container formation has first storage chamber.
10. the experimental system of salt ion migration in simulation soil according to claim 9, which is characterized in that in the salt Annular line is provided on solution container and the inner wall of the containers of soil.
CN201820613808.0U 2018-04-26 2018-04-26 Simulate the experimental system of salt ion migration in soil Expired - Fee Related CN208140702U (en)

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Application Number Priority Date Filing Date Title
CN201820613808.0U CN208140702U (en) 2018-04-26 2018-04-26 Simulate the experimental system of salt ion migration in soil

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Application Number Priority Date Filing Date Title
CN201820613808.0U CN208140702U (en) 2018-04-26 2018-04-26 Simulate the experimental system of salt ion migration in soil

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109557283A (en) * 2018-12-10 2019-04-02 宁夏农林科学院荒漠化治理研究所(宁夏防沙治沙与水土保持重点实验室) Simulation substance is in the soil with the device and measuring method of water migration rule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109557283A (en) * 2018-12-10 2019-04-02 宁夏农林科学院荒漠化治理研究所(宁夏防沙治沙与水土保持重点实验室) Simulation substance is in the soil with the device and measuring method of water migration rule

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Granted publication date: 20181123

Termination date: 20190426