Portable soil body pore water squeezing collector

Abstract

The utility model discloses a portable soil body pore water squeezing collector which comprises a collecting tank, a squeezing tank and an air extractor, the air extractor is communicated with the collecting tank through an air extraction pipe, the collecting tank is communicated with a liquid extraction pipe, the squeezing tank is fixed above the collecting tank, the bottom of the squeezing tank is communicated with the collecting tank through a plurality of through holes, and the liquid extraction pipe is communicated with the liquid extraction pipe. The squeezing groove is detachably provided with a movable squeezing rod, a rubber plug is arranged at the end, close to the groove bottom of the squeezing groove, of the squeezing rod, and the side periphery of the rubber plug is tightly attached to the groove wall of the collecting groove. According to the device, the modes of squeezing the soil body to obtain pore water and extracting the pore water of the soil body under negative pressure are integrated, so that the pore water in different types of soil bodies can be quickly and efficiently collected.

Description

Technical Field

[0001] The utility model relates to the technical field of pore water collection, in particular to a portable soil pore water squeezing collector. Background Art

[0002] Collecting soil pore water is a key method for analyzing the evolution and interactions of the "water-soil-ecology-environment" system, providing irreplaceable data support for environmental governance, disaster prevention and control, and resource optimization. Existing soil pore water collection methods are limited in efficiency. For surface soils, they typically use multiple sets of water-conducting plastic tubes spaced a few centimeters apart. One end is inserted into the soil, and the other end is connected to a negative pressure device. This negative pressure slowly draws the pore water into the corresponding container. This method is inefficient and time-consuming, reducing the efficiency of soil pore water analysis. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a portable soil pore water squeezing collector.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0005] The invention relates to a portable soil pore water squeezing collector, comprising a collecting trough, a squeezing trough and an air extraction device. The air extraction device is connected to the collecting trough through an air extraction pipe. The collecting trough is connected to a liquid extraction pipe. The squeezing trough is fixed above the collecting trough, and a plurality of through holes are passed through between the bottom and the collecting trough. The squeezing trough is detachably equipped with a movable squeezing rod. The squeezing rod is provided with a rubber plug at one end close to the bottom of the squeezing trough, and the side of the rubber plug is tightly fitted with the groove wall of the collecting trough, so that a closed cavity is formed between the collecting trough and the squeezing trough. During implementation, the collected soil is placed in the position of the closed cavity located in the squeezing trough. At this time, the setting of the air extraction device is used to generate a negative pressure in the closed cavity to extract the pore water in the soil. At the same time, the squeezing rod, the rubber plug and the squeezing trough cooperate with each other to apply pressure to the soil to further squeeze out the pore water in the soil, thereby efficiently obtaining the pore water in the soil.

[0006] Preferably, it also includes a pressing sleeve with a through top, which is made of geotextile to avoid the through holes from being blocked while ensuring that the pore water in the soil can be obtained.

[0007] Preferably, the top of the collecting trough has a connecting port, the connecting port and the pressing trough are both cylindrical, and the bottom of the pressing trough is screwed to the connecting port to achieve separation of the pressing trough and the collecting trough.

[0008] Preferably, the bottom of the pressing trough is provided with a plurality of support rods abutting against the bottom of the collecting trough at a position avoiding the through hole, so as to improve the force bearing capacity of the bottom of the pressing trough.

[0009] Preferably, the portable soil pore water squeeze collector further includes a lifting mechanism for driving the squeezing rod to move up and down within the squeezing trough. Specifically, the lifting mechanism includes a base for placing the squeezing trough, a telescopic arm provided on one side of the base, and a fixed rod located above the base at the top of the telescopic arm. The squeezing rod and the fixed rod are detachably connected.

[0010] Preferably, a positioning groove is provided on the base. When the pressing groove is placed in the positioning groove, the pressing groove is coaxial with the pressing rod assembled on the fixing rod, ensuring that the pressing rod can move up and down in the pressing groove.

[0011] Preferably, the bottom circumference of the collecting trough has an extension portion. When the collecting trough is placed in the positioning slot, the extension portion is connected to the base through bolts to ensure that the lifting mechanism can pull the pressing rod out of the pressing trough.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model combines the methods of obtaining pore water by squeezing soil and obtaining pore water by negative pressure extraction, thereby realizing fast and efficient collection of pore water in different types of soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the utility model after being cut apart along the length direction;

[0015] Figure 2 It is a schematic structural diagram of the utility model after being cut apart along the width direction;

[0016] Figure 3 It is a schematic diagram of the top structure of the base of the utility model.

[0017] Figure identification: 1. Collection trough, 101. Connection port, 102. Extension part, 2. Pressing trough, 201. Through hole, 202. Support rod, 3. Vacuum device, 4. Vacuum pipe, 5. Liquid collection pipe, 6. Pressing rod, 7. Rubber stopper, 8. Pressing sleeve, 9. Lifting mechanism, 901. Base, 902. Telescopic arm, 903. Fixing rod, 904. Positioning groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0019] Example 1

[0020] like Figure 1-2The portable soil pore water squeeze collector shown in the figure includes a collection tank 1, a squeezing tank 2 and an air extraction device 3. The air extraction device 3 is connected to the collection tank 1 through an air extraction pipe 4. The collection tank 1 is connected to a liquid extraction pipe 5. The squeezing tank 2 is fixed above the collection tank 1, and the bottom and the collection tank 1 are connected through multiple through holes 201. The squeezing tank 2 is detachably equipped with a movable squeezing rod 6. The squeezing rod 6 is provided with a rubber plug 7 at one end near the bottom of the squeezing tank 2, and the side of the rubber plug 7 is tightly fitted with the wall of the collection tank 1. A closed cavity is formed between the collecting tank 1 and the squeezing tank 2. During implementation, the collected soil is placed in the closed cavity at the position of the squeezing tank 2. At this time, the air extraction device 3 is used to extract the gas in the collecting tank 1 to generate a negative pressure in the closed cavity to extract the pore water in the soil. At the same time, the squeezing rod 6 is used to push the rubber plug 7 to apply pressure to the soil to further squeeze out the pore water in the soil. The generated pore water flows into the collecting tank 1 from the through hole 201 for storage, and the pore water stored in the collecting tank 1 is subsequently extracted through the liquid extraction pipe 5. Specifically, the liquid inlet end of the liquid collection pipe 5 is connected to an extension pipe extending into the bottom of the collection tank 1, and the liquid discharge end is connected to a peristaltic pump through the extension pipe, and a valve is provided on the liquid collection pipe 5. When it is necessary to squeeze and extract the pore water in the soil, the valve closes the liquid collection pipe 5, and the closed cavity can form a negative pressure under the operation of the air extraction device 3; when the pore water stored in the collection tank 1 is extracted, the valve opens the liquid collection pipe 5, and the pore water stored in the collection tank 1 is extracted under the operation of the peristaltic pump. When the pore water in the collection tank 1 is extracted again, air enters from the exhaust port of the air extraction device 3 and enters the collection tank 1 through the air extraction pipe 4 to ensure that the peristaltic pump can extract the pore water stored in the collection tank 1.

[0021] In order to avoid the situation where the soil blocks the through hole 201, the soil is loaded into the pressing groove 2 through the pressing sleeve 8 that passes through the top, and then the pressing rod 6 is used to push the rubber plug 7 to apply pressure to the soil. Specifically, the pressing sleeve 8 is made of geotextile.

[0022] Taking into account that the soil may seep into the collection trough 1 in the form of muddy water, in order to facilitate the cleaning of the soil entering the collection trough 1 in the later stage, the top of the collection trough 1 is provided with a connecting port 101. The connecting port 101 and the squeezing trough 2 are both cylindrical, and the bottom of the squeezing trough 2 is screwed to the connecting port 101, so that the collection trough 1 and the squeezing trough 2 can be disassembled, and the soil in the collection trough 1 can be cleaned through the connecting port 101.

[0023] Example 2

[0024] In the preferred solution of the above embodiment, in order to increase the force that the bottom of the pressing tank 2 can withstand, the bottom of the pressing tank 2 is provided with multiple support rods 202 that abut against the bottom of the collecting tank 1 at a position avoiding the through hole 201.

[0025] Furthermore, the above-mentioned portable soil pore water squeezing collector also includes a lifting mechanism 9, which includes a base 901 for placing the squeezing trough 2. A telescopic arm 902 is provided on one side of the base 901, and a fixed rod 903 is provided on the top of the telescopic arm 902 above the base 901. The squeezing rod 6 is detachably connected to the fixed rod 903. The telescopic arm 902 is a telescopic cylinder. By controlling the formation of the telescopic end of the telescopic cylinder, the vertical height of the fixed rod 903 can be changed, thereby realizing the pushing and pulling of the squeezing rod 6 in the squeezing trough 2, so that the squeezing quality of the soil is higher.

[0026] Specifically, a positioning groove 904 is provided on the base 901. When the pressing groove 2 is placed in the positioning groove 904, the pressing groove 2 is coaxial with the pressing rod 6 assembled on the fixing rod 903; the bottom circumferential side of the collecting groove 1 is provided with an extension portion 102. When the collecting groove 1 is placed in the positioning groove 904, the extension portion 102 is connected to the base 901 by bolts, ensuring that the telescopic arm 902 can pull the pressing rod 6 out of the pressing groove 2.

[0027] Of course, the present invention may have many other implementation methods. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A portable soil pore water squeeze collector, characterized in that: The invention comprises a collecting tank (1), a squeezing tank (2) and an air extraction device (3), wherein the air extraction device (3) is connected to the collecting tank (1) via an air extraction pipe (4), and the collecting tank (1) is connected to a liquid extraction pipe (5). The squeezing tank (2) is fixed above the collecting tank (1), and a plurality of through holes (201) are connected between the bottom and the collecting tank (1). The squeezing tank (2) is detachably equipped with a movable squeezing rod (6), and the squeezing rod (6) is provided with a rubber plug (7) at one end close to the bottom of the squeezing tank (2), and the side periphery of the rubber plug (7) is tightly fitted with the tank wall of the collecting tank (1).

2. The portable soil pore water squeeze collector according to claim 1, characterized in that: It also includes a pressing sleeve (8) with a through top, and the pressing sleeve (8) is made of geotextile.

3. The portable soil pore water squeeze collector according to claim 2, characterized in that: The top of the collecting trough (1) is provided with a connecting port (101), the connecting port (101) and the squeezing trough (2) are both cylindrical, and the bottom of the squeezing trough (2) is screwed to the connecting port (101).

4. The portable soil pore water squeeze collector according to claim 3, characterized in that: The bottom of the squeezing trough (2) is provided with a plurality of support rods (202) that abut against the bottom of the collecting trough (1) at a position avoiding the through hole (201).

5. The portable soil pore water squeeze collector according to any one of claims 1 to 4, characterized in that: The device further comprises a lifting mechanism (9), wherein the lifting mechanism (9) comprises a base (901) for placing the pressing tank (2), a telescopic arm (902) being provided on one side of the base (901), a fixing rod (903) being provided on the top of the telescopic arm (902) and being located above the base (901), and the pressing rod (6) and the fixing rod (903) being detachably connected.

6. The portable soil pore water squeeze collector according to claim 5, characterized in that: A positioning groove (904) is provided on the base (901). When the pressing groove (2) is placed in the positioning groove (904), the pressing groove (2) is coaxial with the pressing rod (6) mounted on the fixing rod (903).

7. The portable soil pore water squeeze collector according to claim 6, characterized in that: The bottom circumference of the collecting trough (1) is provided with an extension portion (102). When the collecting trough (1) is placed in the positioning groove (904), the extension portion (102) is connected to the base (901) via bolts.

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