A soil remediation test device for environmental protection

Abstract

The application discloses a soil remediation test device for environmental protection and relates to the technical field of soil remediation.The soil remediation test device comprises a rack, a test spacer sleeve is rotatably arranged in the lifting slide, the test spacer sleeve can rotate automatically, outer spiral fins are arranged on the outer side of the test spacer sleeve, a plurality of groups of capillary metal pipes are arranged on the bottom of the piston plate, an inner metal core is arranged in each capillary metal pipe, a guide hole is formed through the inner wall of the transmission cavity, a plurality of groups of sampling ports are formed on the outer side of the capillary metal pipe, a sampling baffle can block the sampling ports, and a water absorption block is arranged in the middle of the sampling baffle.The capillary metal pipe groups are pressed into the soil, a plurality of groups of capillary pipes are crossly and gradiently inserted into the soil due to the spiral distribution of the transmission cavity and the piston plate, the approximate flow direction of the leaching liquid in the soil can be judged through the wetting conditions of the plurality of groups of capillary pipes, and the adjustment of the leaching position during subsequent remediation is facilitated.

Description

Technical Field

[0001] This invention relates to the field of soil remediation technology, and more specifically to a soil remediation experimental device for environmental protection. Background Technology

[0002] Soil remediation refers to the process of restoring contaminated soil to its normal function through various technical measures. This technology is mainly used to treat pollution problems in industrial and mining waste sites and arable land. In-situ soil washing is a commonly used technique. It involves using a solvent that promotes the dissolution or migration of pollutants in the soil environment, and injecting the washing solution into the contaminated soil layer using hydraulic pressure. The liquid containing the pollutants is then extracted from groundwater for treatment and separation. The washing solution can be water or a solution containing chemical additives. It can be recycled or repeatedly injected with groundwater to remove remaining pollutants, effectively treating soil pollution.

[0003] Before in-situ soil leaching, soil remediation tests are usually required. A patent (application number: CN202310539409.X) discloses a contaminated soil remediation test device. The removal effect of this test device is limited by the geological conditions of the site, it is difficult to control the flow path of the contaminated liquid, and it is impossible to comprehensively judge the remediation quality. At the same time, when sampling, it can only sample in the vertical direction and cannot extend the sampling horizontally, which limits the sampling and makes it impossible to accurately judge the remediation quality. Summary of the Invention

[0004] The purpose of this invention is to provide an environmental protection soil remediation test device to solve the above problems.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] An environmental protection soil remediation testing device includes a frame with a lifting guide groove inside. A lifting slide is slidably connected inside the lifting guide groove and can automatically rise and fall. A test partition is rotatably installed inside the lifting slide and can automatically rotate. An outer spiral plate is provided on the outer side of the test partition. Multiple sets of transmission cavities are provided inside the test partition in a spiral arrangement. A piston plate is slidably connected inside the transmission cavity and can automatically rise and fall. Multiple sets of capillary metal tubes are provided at the bottom of the piston plate. Each capillary metal tube has an inner metal core inside. A guide hole is provided through the inner wall of the transmission cavity, and the capillary metal tube is inserted into the guide hole.

[0007] The outer side of the capillary metal tube has multiple sampling ports, and the inside of the capillary metal tube is slidably connected to multiple sampling baffles. The sampling baffles can slide automatically and can block the sampling ports. A water-absorbing block is provided in the middle of the sampling baffles.

[0008] Furthermore, a top ring is provided at the top of the capillary metal tube, a compression spring is provided between the top ring and the piston plate, the inner metal core is fixedly connected to the piston plate, multiple sets of guide sleeves are provided inside the capillary metal tube, and the guide sleeves are close to the sampling port, the inner metal core passes through the guide sleeves, and the sampling baffle is fixedly connected to the inner metal core.

[0009] Furthermore, a cone-shaped end is provided at the end of the capillary metal tube away from the piston plate.

[0010] Furthermore, a rotary sealing joint is provided on the top of the test septum, and the rotary sealing joint is connected to multiple sets of transmission cavities through connecting pipes. A drive assembly is installed on the outside of the frame, and the drive assembly is connected to the rotary sealing joint through a drive conduit. The drive assembly can press the medium into the transmission cavity, and a tension spring is provided between the piston plate and the top of the transmission cavity.

[0011] Furthermore, a drive motor is installed at the bottom of the lifting slide, a drive wheel is installed at the output end of the drive motor, and an external gear ring is installed on the outer side of the test spacer, the external gear ring meshing with the drive wheel.

[0012] Furthermore, a drive shaft is rotatably mounted inside the test diaphragm, the drive shaft is located between two sets of transmission cavities, a disintegrating rod is fixedly mounted at the bottom of the drive shaft, a drive wheel is fixedly mounted at the top of the drive shaft, and an annular toothed groove is opened at the bottom of the lifting slide, the drive wheel meshing with the annular toothed groove.

[0013] Furthermore, a rinsing port is provided on the upper part of the outer side of the test diaphragm.

[0014] Furthermore, a winding motor is installed on the side of the frame away from the drive assembly, a winding wheel is installed at the output end of the winding motor, a lifting steel wire is wound around the outside of the winding wheel, a fixed pulley is installed at the top of the frame, and the lifting steel wire is fixedly connected to the top of the lifting slide through the fixed pulley.

[0015] Furthermore, anti-sinking bottom plates are provided on both sides of the bottom of the frame, and the drive assembly and the winding motor are mounted on the anti-sinking bottom plates.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention involves screwing the test septum into the soil and then controlling the piston plate to descend. The piston plate presses the capillary metal tube assembly into the soil. Since the transmission cavity and the piston plate are spirally distributed, multiple sets of capillary tubes are inserted into the soil in a crisscross and gradient manner. By observing the wetting status of multiple sets of capillary tubes, the approximate flow direction of the leaching solution in the soil can be determined, which facilitates the adjustment of the leaching position during subsequent remediation.

[0018] 2. This invention controls the sliding of the sampling baffle, which opens the sampling port. Then, the piston plate is controlled to rise, and the piston plate drives the capillary metal tube assembly to be pulled away from the soil. The sampling port scrapes the washed soil at its location. With the setting of multiple sampling ports, multiple samples in the horizontal direction can be extracted. At the same time, since the multiple capillary tube assemblies are in a stepped shape, soil from different soil layers can be extracted, which can more accurately judge the remediation effect and provide comprehensive sampling. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the invention;

[0020] Figure 2 This is a schematic diagram of the test spacer of the present invention. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the test spacer of the present invention. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the lifting carriage of the present invention;

[0023] Figure 5 This is a schematic cross-sectional view of the experimental spacer of the present invention;

[0024] Figure 6 This is a schematic diagram showing the distribution of the capillary metal tube and the drive shaft of the present invention;

[0025] Figure 7 This is a schematic diagram of the capillary metal tube assembly of the present invention.

[0026] Figure 8 This is a cross-sectional schematic diagram of the capillary metal tube of the present invention.

[0027] Figure 9 This is the present invention. Figure 8 Enlarged diagram of part A in the middle;

[0028] Figure 10 This is a schematic diagram of the sampling baffle of the present invention.

[0029] Reference numerals: 1. Frame; 11. Lifting guide groove; 2. Lifting slide; 21. Annular toothed groove; 22. Drive motor; 23. Drive wheel; 3. Test spacer; 31. Outer spiral blade; 32. Rinse port; 33. Rotary sealing joint; 34. Outer toothed ring; 35. Transmission cavity; 36. Piston plate; 37. Tension spring; 38. Guide hole; 39. Capillary metal tube; 310. Sampling port; 311. Cone head; 312. Top ring; 313. Compression spring; 314. Inner metal core; 315. Guide sleeve; 316. Sampling baffle; 317. Dispersing rod; 318. Drive shaft; 319. Drive wheel; 4. Drive assembly; 41. Drive guide tube; 5. Rewinding motor; 6. Rewinding wheel; 7. Lifting wire; 8. Fixed pulley. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] An environmental protection soil remediation test apparatus according to a preferred embodiment of the present invention will be described in detail below.

[0032] Example 1

[0033] like Figures 1-10 As shown, a soil remediation test device for environmental protection includes a frame 1. The frame 1 has a lifting guide groove 11 inside, and a lifting slide 2 is slidably connected inside the lifting guide groove 11. The lifting slide 2 can automatically rise and fall. A test partition 3 is rotatably installed inside the lifting slide 2. The test partition 3 can automatically rotate. An outer spiral plate 31 is provided on the outside of the test partition 3. Multiple sets of transmission cavities 35 are provided inside the test partition 3, preferably three sets. The multiple sets of transmission cavities 35 are spirally distributed in the test partition 3. A piston plate 36 is slidably connected inside the transmission cavity 35. The piston plate 36 can automatically rise and fall. Multiple sets of capillary metal tubes 39 are provided at the bottom of the piston plate 36, preferably five sets. Each capillary metal tube 39 is provided with an inner metal core 314. A guide hole 38 is provided through the inner wall of the transmission cavity 35, and the capillary metal tube 39 is inserted into the guide hole 38.

[0034] Multiple sampling ports 310 are provided on the outer side of the capillary metal tube 39, with five ports preferred. Multiple sampling baffles 316 are slidably connected inside the capillary metal tube 39. The sampling baffles 316 can slide automatically and block the sampling ports 310. A water-absorbing block is provided in the middle of the sampling baffles 316. The sampling baffles 316 are made of the same material as the capillary metal tube 39.

[0035] Soil in-situ leaching remediation technology has relatively high requirements for on-site soil conditions. The soil must be sandy or have high hydraulic conductivity, and the underlying soil of the contaminated zone must be impermeable. This is necessary to achieve the remediation process of injecting leaching solution into the contaminated soil, then using a pump to draw the leaching solution containing contaminants to the ground to remove the contaminants, and finally recycling the leaching solution. The disadvantage of this method compared to ex-situ remediation is that it is difficult to control the flow path of the contaminated liquid, which may expand the scope and degree of soil contamination and affect the efficiency of soil washing. Therefore, determining the leaching flow direction is particularly important during the experiment.

[0036] The device is moved above the test soil, and then the test septum 3 is rotated. Under the action of the outer spiral plate 31, the test septum 3 is screwed into the sandy soil, separating a large area of ​​test soil inside. Once the test septum 3 is in place, the piston plate 36 is lowered, pushing the capillary metal tube 39 downwards. The capillary metal tube 39 passes through the guide hole 38 and, under its own support and the support of the inner metal core 314, is inserted into the sandy soil in a straight position. Multiple sets of capillary metal tubes 39 are linearly arranged below the piston plate 36. The capillary metal tubes 39 are arranged in rows, and the multiple sets of piston plates 36 are spirally distributed, causing the rows of capillary metal tubes 39 to interweave and form a stepped distribution. Figure 6 As shown, this design ensures that the transmission cavities 35 are not on the same vertical line, resulting in a compact structure and better detection of the leaching flow direction. Then, an in-situ leaching test is conducted on the test soil. When the leaching liquid passes through the capillary metal tube 39, the water-absorbing block in the middle of the sampling baffle 316 absorbs a certain amount of leaching liquid. After the leaching test is completed, the sampling baffle 316 is controlled to slide, and the sampling port 310 is opened by the sampling baffle 316. At this time, the piston plate 36 is controlled to rise, and the piston plate 36 drives the capillary metal tube 39 to rise. The capillary metal tube 39 drives the sampling port 310 to scrape the sample at this position. The sample enters the capillary metal tube 39. After the capillary metal tube 39 is reset, the lifting slide 2 is controlled to rise, and the lifting slide 2 drives the test septum 3 away from the soil.

[0037] After the test septum 3 is away from the soil, the lifting slide 2 is fixed. At this time, the capillary metal tube 39 is extended again, and the soil in the capillary metal tube 39 is taken out to test the remediation effect. At the same time, the position of the water-absorbing block that absorbs the leaching liquid is observed. Since the soil is sandy and the capillary metal tubes 39 are arranged in rows, when the leaching liquid passes through the plane of the capillary metal tube 39, there will be capillary metal tubes 39 in contact with the leaching liquid. At the same time, multiple sets of capillary metal tubes are arranged in a spiral. By observing the distribution of the upper and lower water-absorbing blocks, the flow direction of the leaching liquid in the soil can be determined.

[0038] Furthermore, since the capillary metal tube 39 is equipped with multiple sampling ports 310, samples from different locations can be collected on the same horizontal plane. At the same time, since the multiple capillary metal tubes are arranged in a spiral distribution, samples from different soil layers can be collected, ensuring comprehensive sampling. Moreover, both sampling and flow direction determination are achieved through the capillary metal tube 39, resulting in a compact structure and simple operation.

[0039] Furthermore, a rinsing port 32 is provided on the upper part of the outer side of the test septum 3 to facilitate rinsing operations.

[0040] Example 2

[0041] like Figures 7-9 As shown, a top ring 312 is provided at the top of the capillary metal tube 39, and a compression spring 313 is provided between the top ring 312 and the piston plate 36. The inner metal core 314 is fixedly connected to the piston plate 36. Multiple sets of guide sleeves 315 are provided inside the capillary metal tube 39, and the guide sleeves 315 are close to the sampling port 310. The inner metal core 314 passes through the guide sleeves 315, and the sampling baffle 316 is fixedly connected to the inner metal core 314.

[0042] After the test spacer 3 is screwed into place, the control piston plate 36 descends, pushing the capillary metal tube 39 down. The capillary metal tube 39 passes through the guide hole 38. Under the support of its own force and the support of the inner metal core 314, the capillary metal tube 39 is inserted into the sand in a straight state. At this time, the capillary metal tube 39 is compressed by the top ring 312 under the resistance of the soil, and the piston plate 36 drives the inner metal core 314 to move relative to the capillary metal tube 39. The inner metal core 314 drives the sampling baffle 316 to block the sampling port 310. When the compression spring 313 is compressed to a certain extent, the piston plate 36 continues to push the capillary metal tube 39 into the soil through the compression spring 313. At this time, the sampling port 310 is closed, and the water absorption block is in the sampling port 310.

[0043] After the rinsing test is completed, the piston plate 36 is raised. The piston plate 36 first moves the inner metal core 314 relative to the capillary metal tube 39. The inner metal core 314 moves the sampling baffle 316 away from the sampling port 310, and the sampling port 310 opens. The piston plate 36 moves the capillary metal tube 39 up. The capillary metal tube 39 moves the sampling port 310 to scrape the sample at this position. The sample enters the capillary metal tube 39. There is no need for additional drive control to slide the sampling baffle 316. It can be achieved at the same time as inserting and removing the capillary metal tube 39. The structure is compact and the control is simple.

[0044] By setting the guide sleeve 315, the inner metal core 314 can be slidably guided, making the sliding more stable. The guide sleeve 315 is set in correspondence with the sampling port 310, so the capillary metal tube 39 can be divided into multiple sampling cavities, and the sampled soil will not mix together. At the same time, the guide sleeve 315 is thin, so it does not affect the bending of the capillary metal tube 39 through the guide hole 38.

[0045] Furthermore, a cone 311 is provided at the end of the capillary metal tube 39 away from the piston plate 36 to facilitate the insertion of the capillary metal tube 39 into the sand.

[0046] Example 3

[0047] like Figures 1-3 As shown, a rotary sealing joint 33 is provided on the top of the test septum 3. The rotary sealing joint 33 is connected to multiple sets of transmission cavities 35 through connecting pipes. A drive assembly 4 is installed on the outside of the frame 1. The drive assembly 4 is connected to the rotary sealing joint 33 through a drive conduit 41. The drive assembly 4 can press the medium into the transmission cavity 35. A tension spring 37 is provided between the piston plate 36 and the top of the transmission cavity 35.

[0048] The drive assembly 4 can be a water pump, oil pump or negative pressure machine, so the medium can be water, oil or gas, which facilitates the descent of the piston plate 36. When the medium pressure is not urgent, the tension spring 37 drives the piston plate 36 to rise. At the same time, through the setting of the rotary sealing joint 33, the rotation of the test septum 3 will not cause the drive conduit 41 to become entangled.

[0049] Example 4

[0050] like Figure 2 As shown, a drive motor 22 is installed at the bottom of the lifting slide 2, and a drive wheel 23 is installed at the output end of the drive motor 22. An external gear ring 34 is installed on the outside of the test spacer 3, and the external gear ring 34 meshes with the drive wheel 23.

[0051] By controlling the rotation of the drive motor 22, the drive motor 22 drives the drive wheel 23 to rotate, and the drive wheel 23 drives the test spacer 3 to rotate through the external gear ring 34.

[0052] Example 5

[0053] like Figures 2-6 As shown, a drive shaft 318 is rotatably installed inside the test partition 3. The drive shaft 318 is located between two sets of transmission cavities 35. A disintegrating rod 317 is fixedly installed at the bottom of the drive shaft 318, and a drive wheel 319 is fixedly installed at the top of the drive shaft 318. An annular toothed groove 21 is opened at the bottom of the lifting slide 2, and the drive wheel 319 meshes with the annular toothed groove 21.

[0054] Because the test spacer 3 has a large radius and a certain thickness, it is difficult to screw it into the soil. Therefore, a dispersing rod 317 is set at the bottom. By controlling the rotation of the drive motor 22, the drive motor 22 drives the drive wheel 23 to rotate. The drive wheel 23 drives the test spacer 3 to rotate through the outer toothed ring 34. The test spacer 3 drives the transmission shaft 318 and the dispersing rod 317 to rotate. Under the action of the transmission wheel 319 and the annular toothed groove 21, the dispersing rod 317 rotates relative to the test spacer 3. Therefore, the dispersing rod 317 first screws into the soil, dispersing the soil at the bottom of the test spacer 3. As the test spacer 3 rotates, the soil is dispersed into a ring shape. The test spacer 3 can easily enter the ring. The outer spiral plate 31 guides the soil out. Therefore, the test spacer 3 can be inserted into the soil under its own weight.

[0055] Example 6

[0056] like Figure 1 As shown, a winding motor 5 is installed on the side of the frame 1 away from the drive assembly 4. A winding wheel 6 is installed at the output end of the winding motor 5. A lifting steel wire 7 is wound around the outside of the winding wheel 6. A fixed pulley 8 is installed on the top of the frame 1. The lifting steel wire 7 is fixedly connected to the top of the lifting slide 2 through the fixed pulley 8.

[0057] The winding motor 5 is controlled to rotate, which drives the winding wheel 6 to rotate. The winding wheel 6 drives the lifting slide 2 to rise through the lifting steel wire 7.

[0058] Furthermore, anti-sinking bottom plates are provided on both sides of the bottom of the frame 1, and the drive assembly 4 and the winding motor 5 are installed on the anti-sinking bottom plates, which lowers the overall center of gravity of the frame 1 and prevents the frame 1 from sinking into the soil.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A soil remediation testing device for environmental protection, comprising a frame (1), characterized in that, The frame (1) has a lifting guide groove (11) inside, and a lifting slide (2) is slidably connected inside the lifting guide groove (11). The lifting slide (2) can automatically lift and lower. A test septum (3) is rotatably installed inside the lifting slide (2). The test septum (3) can automatically rotate. An outer spiral plate (31) is provided on the outside of the test septum (3). Multiple sets of transmission cavities (35) are provided inside the test septum (3). The multiple sets of transmission cavities (35) are spirally distributed in the test septum (3). A piston plate (36) is slidably connected inside the transmission cavity (35). The piston plate (36) can automatically lift and lower. Multiple sets of capillary metal tubes (39) are provided at the bottom of the piston plate (36). An inner metal core (314) is provided inside each of the capillary metal tubes (39). A guide hole (38) is provided through the inner wall of the transmission cavity (35). The capillary metal tube (39) is inserted into the guide hole (38). The outer side of the capillary metal tube (39) has multiple sampling ports (310), and the inner side of the capillary metal tube (39) has multiple sampling baffles (316) that are slidably connected. The sampling baffles (316) can slide automatically and can block the sampling ports (310). A water-absorbing block is provided in the middle of the sampling baffles (316). The capillary metal tube (39) is provided with a top ring (312) at its top, and a compression spring (313) is provided between the top ring (312) and the piston plate (36). The inner metal core (314) is fixedly connected to the piston plate (36). The capillary metal tube (39) is provided with multiple sets of guide sleeves (315), and the guide sleeves (315) are close to the sampling port (310). The inner metal core (314) passes through the guide sleeves (315), and the sampling baffle (316) is fixedly connected to the inner metal core (314). The test septum (3) is provided with a rotary sealing joint (33) at the top. The rotary sealing joint (33) is connected to multiple transmission cavities (35) through a connecting pipe. A drive assembly (4) is installed on the outside of the frame (1). The drive assembly (4) is connected to the rotary sealing joint (33) through a drive conduit (41). The drive assembly (4) can press the medium into the transmission cavity (35). A tension spring (37) is provided between the piston plate (36) and the top of the transmission cavity (35).

2. The soil remediation testing device for environmental protection according to claim 1, characterized in that, The capillary metal tube (39) is provided with a cone (311) at the end away from the piston plate (36).

3. The soil remediation testing device for environmental protection according to claim 1, characterized in that, The bottom of the lifting slide (2) is equipped with a drive motor (22), and the output end of the drive motor (22) is equipped with a drive wheel (23). An external toothed ring (34) is installed on the outside of the test spacer (3), and the external toothed ring (34) meshes with the drive wheel (23).

4. The soil remediation testing device for environmental protection according to claim 3, characterized in that, The test septum (3) is rotatably mounted with a drive shaft (318). The drive shaft (318) is located between two sets of transmission cavities (35). A disintegrating rod (317) is fixedly mounted at the bottom of the drive shaft (318). A drive wheel (319) is fixedly mounted at the top of the drive shaft (318). An annular toothed groove (21) is opened at the bottom of the lifting slide (2). The drive wheel (319) meshes with the annular toothed groove (21).

5. The soil remediation testing device for environmental protection according to claim 1, characterized in that, The test septum (3) has a rinsing port (32) on the upper side of its outer side.

6. The soil remediation testing device for environmental protection according to claim 1, characterized in that, A winding motor (5) is installed on the side of the frame (1) away from the drive assembly (4). A winding wheel (6) is installed at the output end of the winding motor (5). A lifting wire (7) is wound around the outside of the winding wheel (6). A fixed pulley (8) is installed on the top of the frame (1). The lifting wire (7) is fixedly connected to the top of the lifting slide (2) through the fixed pulley (8).

7. The soil remediation testing device for environmental protection according to claim 6, characterized in that, The frame (1) has anti-sinking bottom plates on both sides of its bottom, and the drive assembly (4) and the winding motor (5) are mounted on the anti-sinking bottom plates.

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