A comprehensive automatic sampling indoor simulated soil column experiment device

Abstract

The application relates to a comprehensive automatic sampling indoor simulated soil column experiment device, which comprises a supply assembly, a filling assembly and an automatic sampling assembly. The supply assembly comprises a water supply tank and an intelligent peristaltic pump. One end of the intelligent peristaltic pump is connected with the water supply tank, and the other end is connected with the filling assembly. A liquid outlet is arranged at the bottom of the filling assembly. The automatic sampling assembly is arranged directly below the liquid outlet. Contaminated solution is filled in the water supply tank. The contaminated solution flows into the filling assembly through the intelligent peristaltic pump at different flow rates. The automatic sampling assembly replaces manual sampling, improves sampling efficiency, reduces frequent supervision of experimenters, and avoids damage of soil samples caused by large flow rate of the supply assembly, so that the experiment results are not affected. Moreover, the soil sample tube can conveniently take out the soil sample after the experiment and facilitate cleaning.

Description

Technical Field

[0001] This invention relates to an integrated, automated sampling indoor simulated soil column experimental device. Background Technology

[0002] Urban underground pollution mainly manifests as follows: (1) pollution from abandoned sites left behind by relocated urban industrial enterprises, which has become a major obstacle to the redevelopment and utilization of these sites; (2) underground pollution around solid waste disposal sites. Taking urban solid waste landfills as an example, there are over a thousand sanitary landfills and tens of thousands of simple landfills in my country's urban areas. An investigation by the Ministry of Environmental Protection found that the groundwater quality of 89% of landfill sites exceeded national standards. The above-mentioned underground pollution urgently needs to be effectively controlled to ensure the sustainable use of water resources and the health of the people.

[0003] Indoor soil column experiments are used to study the migration characteristics and adsorption properties of specific pollutants in soil through indoor simulation. They have wide applications in research fields such as agriculture, forestry, water conservancy, and environmental science. Soil column experiments can be carried out in the laboratory and have advantages such as high controllability, convenient operation, and low cost.

[0004] Currently, due to technical limitations, manual sample collection is still the primary method used in my country's laboratories for dynamic adsorption column experiments. This requires continuous manual work and the use of manual stopwatches, which consumes considerable manpower, is inefficient, and often results in sample volumes that are either too large or too small, rendering the samples unusable. Therefore, automatic sampling components have solved these problems to some extent. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an integrated automatic sampling indoor simulated soil column experimental device. The automatic sampling component replaces manual sampling, improving sampling efficiency and reducing the need for frequent monitoring by experimental personnel.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an indoor simulated soil column test device with integrated automatic sampling, comprising a supply component, a filling component, and an automatic sampling component. The supply component includes a water supply tank and an intelligent peristaltic pump. One end of the intelligent peristaltic pump is connected to the water supply tank, and the other end is connected to the filling component. The bottom of the filling component is provided with a liquid outlet. The automatic sampling component is located directly below the liquid outlet. The water supply tank contains a contaminated solution, and the contaminated solution flows into the filling component at different flow rates through the intelligent peristaltic pump.

[0007] Furthermore, the filling assembly includes a transparent round tube and a transparent round tube buckle at the bottom of the transparent round tube. The transparent round tube is divided into an upper part and a lower part according to its length. The upper and lower end faces of the upper part are clamped with a leakage plate. The lower part is provided with a slide rail. A slide rail pin is slidably connected to the slide rail. The slide rail pin is connected to a connecting rod and one end of the slide rail pin is connected to the connecting rod. The other end of the connecting rod is connected to the transparent round tube buckle. The connecting rod is hollow inside and communicates with the upper part.

[0008] Furthermore, the end face of the permeation plate facing the soil sample is provided with polyester-cotton cloth and filter sheet.

[0009] Furthermore, the seepage plate that is snapped onto the upper lower end face is funnel-shaped.

[0010] Furthermore, the filling assembly includes soil sample tubes with different diameters but concentric centers and a transparent circular tube. The transparent circular tube is sleeved around the soil sample tube, and the soil sample tube and the transparent circular tube are slidably engaged. The sidewall and bottom of the soil sample tube are provided with leakage holes. The sidewall of the soil sample tube extends with an oblique opening, and the sidewall of the transparent circular tube is provided with an oblique pipe corresponding to the oblique opening. The liquid outlet is located at the bottom of the transparent circular tube, and a liquid collecting device is provided at the bottom of the transparent circular tube and is detachably connected to the bottom of the transparent circular tube.

[0011] Furthermore, the transparent cylindrical tube is provided with a vertical slide and multiple horizontal grooves inside. The multiple horizontal grooves are distributed at different heights along the length of the transparent cylindrical tube. The multiple horizontal grooves are connected to the vertical slide. The oblique opening slides up and down along the vertical slide and rotates to engage with the horizontal grooves.

[0012] Furthermore, the liquid collecting device includes a threaded sleeve connected to the liquid outlet, a disc is fixedly arranged around the threaded sleeve, baffles with different diameters extending upward on the end face of the disc, and corresponding liquid collecting cavities are formed between adjacent baffles. The liquid collecting cavities are used to collect the solution discharged from the corresponding inclined pipe, and the threaded sleeve is used to collect the solution discharged from the liquid outlet. The liquid collecting cavities and the bottom of the threaded sleeve are provided with liquid drain ports.

[0013] Furthermore, a sealing element is provided at the end of the inclined pipe, and the sealing element is detachably connected to the end of the inclined pipe.

[0014] Furthermore, the automatic sampling component includes a base, on which a fixing plate is mounted, and the fixing plate and the base form an upper partition. A wastewater tank is provided above the base, and a sampling disc is provided on the wastewater tank. The center of the sampling disc extends through the middle of the wastewater tank and into the upper partition via a power transmission shaft. A power transmission gear, a stepper motor, and a gear on the stepper motor shaft are provided in the upper partition, and the power transmission gear and the stepper motor are both fixed on the fixing plate. The power transmission shaft is fixedly connected to the power transmission gear. A controller is provided in the lower partition, and the controller is used to control the opening and closing of the stepper motor.

[0015] Furthermore, the sampling tray is provided with multiple through holes, which are distributed circumferentially around the center of the sampling tray, and a sampling bottle is placed at each through hole.

[0016] The beneficial effects of this invention are:

[0017] 1. This indoor simulated soil column experimental device includes a supply component, a filling component, and an automatic sampling component. The automatic sampling component replaces manual sampling, improving sampling efficiency and reducing the need for frequent monitoring by experimental personnel. 2. The filling component includes a soil sample tube, a transparent circular tube, and a liquid collection device. The soil sample tube prevents soil sample damage caused by high flow rates from the supply component, which could affect experimental results. It also facilitates sample removal and cleaning after the experiment. The transparent circular tube features inclined channels, creating flow channels for soil layers at different heights. The liquid collection device connects to the automatic sampling component, enabling automatic sampling from multiple drainage outlets. This reduces the number of experiments while collecting various data, thus improving experimental efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of Example 1;

[0019] Figure 2 A schematic diagram of the inside of a transparent cylindrical tube. Figure 1 ;

[0020] Figure 3 A schematic diagram of the inside of a transparent cylindrical tube. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the sampling component;

[0022] Figure 5 This is a schematic diagram of Example 2;

[0023] Figure 6 for Figure 5A schematic diagram of the interior of a transparent cylindrical tube. Reference numerals: 1. Supply component; 11. Water supply tank; 12. Intelligent peristaltic pump; 2. Automatic sampling component; 21. Base; 22. Fixing plate; 23. Wastewater tank; 24. Sampling tray; 241. Through hole; 25. Power transmission shaft; 26. Power transmission gear; 27. Stepper motor; 28. Controller; 3. Transparent cylindrical tube; 4. Transparent cylindrical tube clip; 5. Leakage plate; 6. Slide rail; 7. Slide rail pin; 8. Connecting rod; 9. Polyester-cotton cloth; 10. Filter plate; 13. Soil sample tube; 14. Slanted opening; 15. Slanted pipe; 16. Liquid collection component; 161. Threaded sleeve; 162. Disc; 163. Baffle; 164. Liquid collection chamber; 165. Drain outlet; 17. Sealing component; 18. Horizontal groove. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] Reference Figures 1 to 4 As shown in the figure, an indoor simulated soil column test device with integrated automatic sampling in this embodiment includes a supply component 1, a filling component, and an automatic sampling component 2. The supply component 1 includes a water supply tank 11 and an intelligent peristaltic pump 12. One end of the intelligent peristaltic pump 12 is connected to the water supply tank 11, and the other end is connected to the filling component. The bottom of the filling component is provided with a liquid outlet. The automatic sampling component 2 is located directly below the liquid outlet. The water supply tank 11 contains contaminated solution, and the contaminated solution flows into the filling component at different flow rates through the intelligent peristaltic pump 12.

[0026] Based on the above embodiments, the filling component includes a transparent round tube 3 and a transparent round tube 3 buckle provided at the bottom of the transparent round tube 3. The transparent round tube 3 is divided into an upper part and a lower part according to its length. The upper and lower end faces of the upper part are snapped with a leakage plate 5. The lower part is provided with a slide 6. A slide 6 pin is slidably connected to the slide 6. The slide 6 pin is connected to a connecting rod 8 and one end of the slide 6 pin is connected to the connecting rod 8. The other end of the connecting rod 8 is snapped with the transparent round tube 3. The connecting rod 8 is hollow inside and communicates with the upper part.

[0027] Based on the above embodiments, each end face of the permeation plate 5 facing the soil sample is provided with a polyester-cotton cloth 9 and a filter sheet 10.

[0028] Based on the above embodiment, the seepage plate 5 that is snapped onto the upper lower end face is funnel-shaped.

[0029] Based on the above embodiments, the automatic sampling component includes a base 21, on which a fixing plate 22 is mounted, and the fixing plate 22 and the base 21 form an upper partition. A wastewater tank 23 is provided above the base 21, and a sampling disk 24 is provided on the wastewater tank 23. The center of the sampling disk 24 extends through the middle of the wastewater tank 23 and into the upper partition via a power transmission shaft 25. A power transmission gear 26, a stepper motor 27, and a gear on the shaft of the stepper motor 27 are provided in the upper partition, and the power transmission gear 26 and the stepper motor 27 are both fixed on the fixing plate 22. The power transmission shaft 25 is fixedly connected to the power transmission gear 26. A controller 28 is provided in the lower partition, and the controller 28 is used to control the opening and closing of the stepper motor 27.

[0030] Based on the above embodiments, the sampling disk 24 is provided with a plurality of through holes 241, which are distributed in a circle with the center of the sampling disk 24 as the center, and a sampling bottle is placed at the through hole 241.

[0031] The above improvements are specifically as follows: Figures 1 to 4As shown: The indoor simulated soil column experimental device includes a supply component 1, a filling component, and an automatic sampling component 2. The supply component 1 includes a water tank 11 and an intelligent peristaltic pump 12. One end of the intelligent peristaltic pump 12 is connected to the water tank 11 via a delivery pipe, and the other end is connected to the upper surface of the filling component via a delivery pipe with a diameter of 2 mm. The supply tank contains a contaminated solution, which can be controlled by the intelligent peristaltic pump 12 to simulate different flow rates of groundwater and flow into the filling component. The filling component includes a transparent circular tube 3 and a transparent circular tube 3 clip at the bottom of the transparent circular tube 3. The diameter of the transparent circular tube 3 is preferably 10 cm, and the outer wall of the transparent circular tube 3 is provided with scale lines to facilitate filling and observation of the transparent circular tube 3. The length is divided into an upper and lower section. The upper section has permeation plates 5 fastened to both the upper and lower ends. Each end of the permeation plate 5 facing the soil sample is fitted with a polyester-cotton cloth 9 and a filter sheet 10. The permeation plates 5 fastened to the lower end of the upper section are arc-shaped or funnel-shaped to facilitate the flow of solution into the connecting rod 8. A slide rail 6 is provided inside the lower part of the connecting rod 8, and a slide rail pin is slidably connected to the slide rail 6. The slide rail pin is connected to the connecting rod 8, and one end of the slide rail pin is connected to the connecting rod 8. The other end of the connecting rod 8 is fastened to a transparent round tube 3. The connecting rod 8 is hollow inside and communicates with the upper section. Through the arrangement of the slide rail 6, the slide rail pin, and the connecting rod 8, the position of the slide rail pin in the slide rail 6 can be adjusted according to the height of the experimental soil sample, thereby adjusting the position of the connecting rod 8. The contaminated solution seeps to the bottom through the filling soil sample material and flows through the connecting rod 8. The automatic sampling assembly 2 includes a base 21, on which a wastewater tank 23 is mounted. A sampling disc 24 is mounted on the wastewater tank 23 and has multiple through holes 241. A sampling bottle is placed inside the through holes 241 of the sampling disc 24. The wastewater tank 23 is an annular groove, and the sampling disc 24 is a circular disc 162. The diameter of the sampling disc 24 is smaller than the diameter of the wastewater tank 23. The right end of the wastewater tank 23 can rotate for waste liquid to flow out. One end of the power drive shaft is fixedly connected to the sampling disc 24, and the other end passes through the central hole of the wastewater tank 23 and engages with the power transmission gear 26. The power transmission gear 26 engages with the motor shaft gear, which is connected to the stepper motor 27. A fixing plate 22 is provided inside the base 21. The bottom end of the stepper motor 27 passes through the fixed plate 22 and is movably mounted on the fixed plate 22 via bearings. The power transmission gear 26 and the motor shaft gear are mounted on the fixed plate 22. The stepper motor 27 is connected to the controller 28. The controller 28 sets the running time of the stepper motor 27 and controls the rotation angle of the sampling disc 24 and the wastewater tank 23 according to the time, thereby controlling the position of the sampling bottle. For example, sampling is performed every hour. After the sampling time is reached, the controller 28 controls the stepper motor 27 to start. The motor shaft gear drives the power transmission gear 26 to rotate, which in turn drives the power transmission shaft 25 to rotate. The power transmission shaft 25 drives the sampling disc 24 and the wastewater tank 23 to rotate, and the sampling bottle rotates accordingly. The controller 28 sets the rotation time of the stepper motor 27.The rotation angle of the sampling disc 24 is controlled by the rotation time. After the sampling bottle reaches the position of the connecting rod 8, the controller 28 shuts off the stepper motor 27 and begins sampling. Based on the liquid flow rate, the time required to collect the required liquid volume is calculated, and the sampling duration is set on the controller 28. After sampling is complete, the controller 28 restarts the stepper motor 27, causing the sampling bottle to move away from the connecting rod 8. The sampling disc 24 and wastewater tank 23 are rotated until the connecting rod 8 is positioned between the two sampling bottles on the circumference. At this time, liquid still flows out from the connecting rod 8, dripping onto the through-hole 241 on the sampling disc 24 (where no sampling device is placed) and flowing into the wastewater tank 23. When the sampling time is reached again, the controller 28 restarts the stepper motor 27, repeating the above process. After sampling, the sample can be used to insert a moisture sensor to measure moisture content, or to collect soil samples to measure the content of pollutants or nutrients in the soil, reflecting the migration of pollutants in the soil.

[0032] For reference Figure 5 , Figure 6 As shown, this second embodiment is basically the same as the first embodiment, except that: the filling component includes a soil sample tube 13 with the same center but different diameters and a transparent round tube 3. The transparent round tube 3 is sleeved on the outside of the soil sample tube 13. The soil sample tube 13 and the transparent round tube 3 are slidably connected. The side wall and bottom of the soil sample tube 13 are provided with leakage holes. The side wall of the soil sample tube 13 extends with an oblique opening 14. The side wall of the transparent round tube 3 is provided with an oblique pipe 15 corresponding to the oblique opening 14. The liquid outlet is located at the bottom of the transparent round tube 3. The bottom of the transparent round tube 3 is provided with a liquid collection component 16 and the liquid collection component 16 is detachably connected to the bottom of the transparent round tube 3.

[0033] Based on the above embodiments, the inner wall of the transparent round tube 3 is provided with a vertical slide 6 and multiple horizontal grooves 18. The multiple horizontal grooves 18 are distributed at different heights along the length of the transparent round tube 3. The multiple horizontal grooves 18 are connected to the vertical slide 6. The oblique opening 14 slides up and down along the vertical slide 6 and rotates to engage with the horizontal grooves 18.

[0034] Based on the above embodiments, the liquid collecting component 16 includes a threaded sleeve 161 connected to the liquid outlet. A disc 162 is fixedly arranged around the threaded sleeve 161. Baffles 163 with different diameters extending upward on the end face of the disc 162 are formed. A liquid collecting cavity 164 is formed between adjacent baffles 163. The liquid collecting cavity 164 is used to collect the solution discharged from the corresponding inclined pipe 15. The threaded sleeve 161 is used to collect the solution discharged from the liquid outlet. A drain port 165 is provided at the bottom of the liquid collecting cavity 164 and the threaded sleeve 161.

[0035] Based on the above embodiments, a sealing member 17 is provided at the end of the inclined pipe 15, and the sealing member 17 is detachably connected to the end of the inclined pipe 15.

[0036] The above improvements are specifically as follows: Figure 5 , Figure 6 As shown: The filling assembly includes soil sample tubes 13 and transparent circular tubes 3 with different diameters but concentric centers. The transparent circular tube 3 is sleeved around the soil sample tube 13, and the soil sample tube 13 and the transparent circular tube 3 are slidably engaged. The soil sample tube 13 has leakage holes on its sidewalls and bottom. An inclined opening 14 extends from the sidewall of the soil sample tube 13. An inclined pipe 15 is provided on the sidewall of the transparent circular tube 3 corresponding to the inclined opening 14. The outlet is located at the bottom of the transparent circular tube 3. A liquid collecting component 16 is provided at the bottom of the transparent circular tube 3, and the liquid collecting component 16 is detachably connected to the transparent circular tube 3. The inner wall of the transparent circular tube 3 has a vertical slide 6 and multiple horizontal grooves 18. The multiple horizontal grooves 18 are distributed at different heights along the length of the transparent circular tube 3 and communicate with the vertical slide 6. The inclined openings 14 slide up and down along the vertical slide 6 and rotate to engage with the horizontal grooves 18. The liquid collecting component 16 includes a thread connecting to the outlet. The sleeve 161 has a circular disc 162 fixedly installed around its outer periphery. Baffles 163 with different diameters extend upwards from the end face of the disc 162, forming multiple liquid collection chambers 164 between adjacent baffles 163. These chambers 164 correspond sequentially to an inclined pipe 15 running from bottom to top along the length of the transparent circular tube 3. A sealing element 17 is installed at the end of the inclined pipe 15, such as a sealing plug or a rotating baffle 163, to seal the port of the inclined pipe 15. The liquid collection chambers 164 and the threaded sleeve 161 collect solutions from different heights. Both chambers 164 and the threaded sleeve 161 have outlets at their bottoms. The solution is automatically sampled at set intervals. The inclined pipe 15 and the liquid collection elements 164 enable automatic sampling of soil layers at different heights, avoiding multiple experiments, saving steps, and improving efficiency. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A comprehensive, automated sampling indoor simulated soil column experimental device, characterized in that: The system includes a supply component (1), a filling component, and an automatic sampling component (2). The supply component (1) includes a water supply tank (11) and an intelligent peristaltic pump (12). One end of the intelligent peristaltic pump (12) is connected to the water supply tank (11), and the other end is connected to the filling component. The bottom of the filling component is provided with a liquid outlet. The automatic sampling component (2) is located directly below the liquid outlet. The water supply tank (11) contains contaminated solution, and the contaminated solution flows into the filling component at different flow rates through the intelligent peristaltic pump (12). The filling assembly includes a transparent round tube (3) and a transparent round tube (3) buckle at the bottom of the transparent round tube (3). The transparent round tube (3) is divided into an upper part and a lower part according to the length of the transparent round tube (3). The upper and lower end faces of the upper part are clamped with a seepage plate (5). The inner wall of the lower part is provided with a slide (6). A slide (6) pin is slidably connected at the slide (6). The slide (6) pin is connected to a connecting rod (8). The slide (6) pin is connected to one end of the connecting rod (8). The other end of the connecting rod (8) is connected to the transparent round tube (3) buckle. The connecting rod (8) is hollow inside and communicates with the upper part. Alternatively, the filling assembly may include soil sample tubes (13) with different diameters but concentric centers and transparent round tubes (3). The transparent round tubes (3) are sleeved around the soil sample tubes (13). The soil sample tubes (13) and transparent round tubes (3) are slidably connected. The sidewalls and bottom of the soil sample tubes (13) are provided with leakage holes. The sidewalls of the soil sample tubes (13) are provided with inclined openings (14). The sidewalls of the transparent round tubes (3) are provided with inclined pipes (15) corresponding to the inclined openings (14). The liquid outlet is located at the bottom of the transparent round tubes (3). The bottom of the transparent round tubes (3) is provided with a liquid collecting device (16), and the liquid collecting device (16) is detachably connected to the bottom of the transparent round tubes (3). The inner wall of the transparent round tube (3) is provided with a vertical slide (6) and multiple horizontal grooves (18). The multiple horizontal grooves (18) are distributed at different heights along the length of the transparent round tube (3). The multiple horizontal grooves (18) are connected to the vertical slide (6). The oblique opening (14) slides up and down along the vertical slide (6) and rotates to engage with the horizontal grooves (18).

2. The indoor simulated soil column test device with integrated application and automatic sampling as described in claim 1, characterized in that: The end face of the permeation plate (5) facing the soil sample is provided with polyester-cotton cloth (9) and filter sheet (10).

3. The indoor simulated soil column test device with integrated application and automatic sampling as described in claim 2, characterized in that: The seepage plate (5) that is snapped onto the lower end face of the upper part is funnel-shaped.

4. The indoor simulated soil column test device with integrated application and automatic sampling as described in claim 1, characterized in that: The liquid collecting device (16) includes a threaded sleeve (161) connected to the liquid outlet. A disc (162) is fixedly arranged around the threaded sleeve (161). Baffles (163) with different diameters extend upward on the end face of the disc (162). A liquid collecting cavity (164) is formed between adjacent baffles (163). The liquid collecting cavity (164) is used to collect the solution discharged from the corresponding inclined pipe (15). The threaded sleeve (161) is used to collect the solution discharged from the liquid outlet. A drain port (165) is provided at the bottom of the liquid collecting cavity (164) and the threaded sleeve (161).

5. The indoor simulated soil column test device with integrated application and automatic sampling as described in claim 4, characterized in that: The inclined pipe (15) is provided with a sealing member (17) at its end, and the sealing member (17) is detachably connected to the end of the inclined pipe (15).

6. The indoor simulated soil column test device with automatic sampling for integrated application according to claim 3, 4, or 5, characterized in that: The automatic sampling assembly includes a base (21), on which a fixing plate (22) is mounted and the fixing plate (22) and the base (21) form an upper partition. A wastewater tank (23) is provided above the base (21), and a sampling plate (24) is provided on the wastewater tank (23). The center of the sampling plate (24) extends through the middle of the wastewater tank (23) and into the upper partition through a power transmission shaft (25). A power transmission gear (26), a stepper motor (27), and a gear on the shaft of the stepper motor (27) are provided in the upper partition. The power transmission gear (26) and the stepper motor (27) are both fixed on the fixing plate (22). The power transmission shaft (25) is fixedly connected to the power transmission gear (26). A controller (28) is provided in the lower partition. The controller (28) is used to control the opening and closing of the stepper motor (27).

7. The indoor simulated soil column test device with integrated application and automatic sampling as described in claim 6, characterized in that: The sampling disk (24) is provided with a plurality of through holes (241), which are distributed in a circle with the center of the sampling disk (24) as the center, and a sampling bottle is placed at the through hole (241).

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