CN215262622U

CN215262622U - Soil water normal position sampling device

Info

Publication number: CN215262622U
Application number: CN202121167607.0U
Authority: CN
Inventors: 邵一先; 孔淑琼; 魏迎春; 周宗尧; 蔡达伟; 刘瑞琪; 简中华
Original assignee: Zhejiang Institute Of Geological Survey; China University of Geosciences
Current assignee: Zhejiang Institute Of Geological Survey; China University of Geosciences
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-12-21
Anticipated expiration: 2031-05-27

Abstract

The invention relates to a soil water sampling device, relates to a soil water in-situ sampling device, and belongs to the technical field of soil water sample collection. The utility model provides a soil water normal position sampling device, includes the unit that catchments, intake pipe and the unit of bleeding, the unit setting that catchments is in sample soil, and it is equipped with into water end, play water end and inlet end, the unit that catchments is used for collecting the water in the sample soil, the intake pipe is equipped with one at least, its with the play water end intercommunication of the unit that catchments, bleed the unit with the inlet end of the unit that catchments is connected, and it is used for carrying out evacuation processing to the inside of the unit that catchments. The soil water in-situ sampling device provided by the invention has the advantages of simple sampling process, flexible water taking mode, excellent soil water collecting effect, simple structure, convenience in operation, low implementation cost, low maintenance cost, capability of large-scale production, easiness in popularization and the like.

Description

Soil water normal position sampling device

Technical Field

The invention relates to a soil water sampling device, relates to a soil water in-situ sampling device, and belongs to the technical field of soil water sample collection.

Background

Soil is an important component of natural ecological environment, and is an indispensable natural resource in human survival development and industrial and agricultural production activities. The soil water is the water content in the soil from the ground surface to the underground water surface (submerged surface) or more, and is also called unsaturated zone soil water. Soil water is an important link in the interconversion relationship between "four waters" (atmospheric water, surface water, soil water and underwater), is a carrier for material transport and migration, and is also the most important way for crops to absorb nutrients.

The sampling device of soil water is the prerequisite of studying soil water, and for soil of different properties, should adopt appropriate extraction method. At the present stage, soil water sampling methods can be divided into indoor methods and field in-situ methods. The indoor sampling method comprises a mechanical squeezing method, a distillation method, a high-speed centrifugation method and the like.

The field soil water in-situ sampling technology is one of the basic technologies for in-situ monitoring of dynamic change of solute in aeration zone and submerged aquifer system, and its basic principle is that when the applied suction is greater than the soil matrix suction, it is possible to separate soil solution from soil. When the water content of the soil is higher, no matter which kind of soil has good conditions for in-situ extraction of soil water (solution), more water sample amount can be obtained, and the test requirement of the soil water component can be met; when the water content of the soil is lower, the water intake is less, or the soil water sample cannot be taken. If the soil water content is moderate, but the soil water sample cannot be taken, attention must be paid to checking the tightness of the soil water sampling device system.

Common soil water field sampling methods include a soil pore water method, a soil water extraction method, a thin film diffusion gradient technology and the like, and soil water can be directly or indirectly obtained. However, the method has the disadvantages of long sampling time, high sampling difficulty, difficulty in operation, limited application range and certain limitations.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a soil water normal position sampling device.

The utility model provides a soil water normal position sampling device, including the unit that catchments, intake pipe and the unit of bleeding, the unit setting that catchments is in sample soil, and it is equipped with into water end, play water end and inlet end, the unit that catchments is used for collecting the water in the sample soil, the intake pipe is equipped with one at least, its with the play water end intercommunication of the unit that catchments, bleed the unit with the inlet end of the unit that catchments is connected, and it is used for carrying out evacuation treatment to the inside of the unit that catchments.

Further, the water collecting unit comprises a water collecting head and a water storage pipe, the water collecting head is of an approximate cylinder structure, the inner hollow of the water collecting head is open, the upper end of the water storage pipe is open, the water storage pipe is matched with the water collecting head, the lower end of the water storage pipe is detachably connected with the upper end of the water collecting head, a water inlet channel is arranged at the lower end of the water storage pipe, the air extracting unit is communicated with the inside of the water storage pipe, a first vacuum pipe is arranged at the water inlet end of the water taking pipe, and the other end of the first vacuum pipe penetrates through the upper end of the water storage pipe and stretches into the inside of the water collecting head.

Furthermore, a valve is arranged on the first vacuum tube.

Further, the air pumping unit is a vacuum pump.

Furthermore, the number of the water intake pipes is two, and the two water intake pipes are connected in series through a pipeline.

Furthermore, the number of the water taking pipes is six, the three water taking pipes are connected in series to form a group, and the two groups of water taking pipe groups are connected in parallel.

The utility model provides a beneficial effect that technical scheme brought is: the soil water in-situ sampling device provided by the invention has the advantages of simple sampling process, flexible water taking mode, excellent soil water collecting effect, simple structure, convenience in operation, low implementation cost, low maintenance cost, capability of large-scale production, easiness in popularization and the like.

Drawings

FIG. 1 is a schematic structural view of a soil water in-situ sampling device according to the present invention;

fig. 2 is a schematic structural view of a soil water in-situ sampling device according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a soil water in-situ sampling device according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.

Referring to fig. 1-3, an embodiment of the present invention provides a soil water in-situ sampling device, including water collecting unit, water intake pipe 20 and air pumping unit 30, the water collecting unit is disposed in the sampled soil and is provided with a water inlet end, a water outlet end and an air inlet end, the water collecting unit is used for collecting water in the sampled soil, the water intake pipe 20 is provided with at least one, which is communicated with the water outlet end of the water collecting unit, the air pumping unit 30 is connected with the air inlet end of the water collecting unit, and is used for performing vacuum pumping treatment on the inside of the water collecting unit.

The utility model discloses in, the unit setting that catchments is in sample soil to collect and save the water in the sample soil, and the unit 30 of bleeding then before the unit that catchments carries out the water intaking, carries out evacuation processing to the unit that catchments earlier inside, with the unit that catchments inside founds the closed environment, carries to the collection of taking a sample in the intake pipe 20 by the water that the unit that catchments was collected. Specifically, the water collection unit is respectively communicated with the air extraction unit 30 and the water extraction pipe 20 through a first vacuum pipe 13, valves 14 are arranged on the first vacuum pipe 13, and the valves 14 are used for realizing connection and disconnection of pipelines. Specifically, the valve 14 is a line flow clamp. The utility model discloses a soil water normal position sampling device through the unit that catchments, waits for about 15min ~ 1h, can follow and extract about 50 ~ 150ml of soil water in intake pipe 20, and the soil water sample that obtains open-air collection is collected to the normal position.

In the above embodiment, the water collecting unit includes water collecting head 10 and water storage pipe 11, water collecting head 10 is similar cylinder structure, and its inside cavity and upper end are uncovered, water storage pipe 11 with water collecting head 10 looks adaptation, its lower extreme with water collecting head 10's upper end can be dismantled and be connected, water storage pipe 11's lower extreme is equipped with inhalant canal, air exhaust unit 30 with water storage pipe 11's inside intercommunication, intake end of intake pipe 20 is equipped with first vacuum tube 13, first vacuum tube 13's the other end passes water storage pipe 11's upper end stretches into in the water collecting head 10.

The utility model discloses in, water collection head 10 is the ceramic head that can supply water passageway, the upper and lower both ends of standpipe 11 all are equipped with the sealing member, and the sealing member that is located the upper end is equipped with the first through-hole that can supply to stretch into with the first vacuum tube 13 that air exhaust unit 30 is connected, and can supply the second through-hole that stretches into with the first vacuum tube 13 that water intaking pipe 20 is connected, be located and be equipped with the third through-hole that the water inlet passageway that supplies water to pass through and supply to stretch into with the first vacuum tube 13 that water intaking pipe 20 is connected on the sealing member 15 of lower extreme, water in the water collection head 10 passes through the water inlet passageway and carries to in the standpipe 11. The storage of water collection can be realized to the standpipe 11, improves the water storage capacity of the water collection unit. And the detachable connection mode of the water storage pipe 11 and the water collecting head 10 is convenient for carrying the water collecting unit. Specifically, the detachable connection mode of the water storage pipe 11 and the water collecting head 10 is bonding.

In the above embodiment, the pumping unit 30 is a vacuum pump.

The utility model discloses in, the vacuum pump has advantages such as implementation cost is low and convenient operation. Starting the vacuum extractor to make the vacuum degree reach more than 1.33 multiplied by 10 < -2 > Pa so as to form a closed environment in the water collecting unit.

In the above embodiment, two water intake pipes 20 are provided, and the two water intake pipes 20 are connected in series through a pipeline.

The utility model discloses in, the more the quantity of intake pipe 20, the efficiency of gathering soil water sample is just higher. The water taking pipes 20 are communicated with each other through a second vacuum pipe. As another embodiment of the present invention, the water intake pipes 20 are six, and three water intake pipes 20 are connected in series to form a set, and two sets of water intake pipes 20 are connected in parallel.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a soil water normal position sampling device, its characterized in that, includes water collecting unit, intake pipe (20) and air bleed unit (30), water collecting unit sets up in sample soil, and it is equipped with into water end, play water end and inlet end, water collecting unit is used for collecting the water in the sample soil, intake pipe (20) are equipped with one at least, its with water collecting unit's play water end intercommunication, air bleed unit (30) with water collecting unit's inlet end is connected, and it is used for taking out vacuum to water collecting unit's inside.

2. A soil water in-situ sampling device according to claim 1, wherein the water collection unit comprises a water collection head (10) and a water storage pipe (11), the water collection head (10) is of an approximate cylindrical structure, the interior of the water collection head is hollow, the upper end of the water collection head is open, the water storage pipe (11) is matched with the water collection head (10), the lower end of the water storage pipe is detachably connected with the upper end of the water collection head (10), the lower end of the water storage pipe (11) is provided with a water inlet channel, the air pumping unit (30) is communicated with the interior of the water storage pipe (11), the water inlet end of the water intake pipe (20) is provided with a first vacuum pipe (13), and the other end of the first vacuum pipe (13) penetrates through the upper end of the water storage pipe (11) and extends into the water collection head (10).

3. A soil water in situ sampling device according to claim 2 wherein the first vacuum tube (13) is provided with a valve (14).

4. A soil water in-situ sampling device according to claim 1, wherein the air pumping unit (30) is a vacuum pump.

5. A soil water in-situ sampling device according to claim 1, wherein there are two water intake pipes (20), and the two water intake pipes (20) are connected in series through a pipeline.

6. A soil water in situ sampling device according to claim 1 wherein there are six water intake pipes (20) and three water intake pipes (20) are arranged in series as a group and two groups of water intake pipes (20) are arranged in parallel.