Soil remediation test device for environmental protection

Abstract

The invention discloses a soil remediation test device for environmental protection, and relates to the technical field of soil remediation. The device comprises a rack, a test spacer bush is rotationally installed in a lifting sliding frame and can automatically rotate, an outer spiral piece is arranged on the outer side of the test spacer bush, multiple sets of capillary metal pipes are arranged at the bottom of a piston plate, inner metal cores are arranged in the capillary metal pipes, and the inner metal cores are arranged in the capillary metal pipes. A guide hole is formed in the inner wall of the transmission cavity in a penetrating mode, a plurality of sets of sampling openings are formed in the outer side of the capillary metal pipe, a sampling baffle can block the sampling openings, and a water absorption block is arranged in the middle of the sampling baffle. According to the device, the capillary metal tube groups are pressed into the soil, the transmission cavities and the piston plates are spirally distributed, so that the capillary tube groups are crossed and are inserted into the soil in a gradient manner, the approximate flow direction of leacheate in the soil can be judged according to the wetting conditions of the capillary tube groups, and the adjustment of the leaching position during subsequent remediation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of soil remediation, and in particular to a soil remediation test device for environmental protection. Background Art

[0002] Soil remediation refers to the process of restoring contaminated soil to its normal function through various technical measures. This technology is primarily used to address pollution issues in industrial and mining wastelands and cultivated soil. In-situ soil leaching is a commonly used technique. Using a solvent that promotes the dissolution or migration of pollutants in the soil environment, a cleaning fluid is injected into the contaminated soil layer using hydraulic pressure. The liquid containing the pollutants is then extracted from the groundwater for treatment and separation. The cleaning fluid can be either pure water or a solution containing chemical additives. It can be recycled or injected into the groundwater multiple times to remove remaining pollutants, effectively controlling soil contamination.

[0003] Before in-situ soil leaching, soil remediation trials are usually required. A patent (application number: CN202310539409.X) discloses a contaminated soil remediation test device. The removal effect of this test device is subject to the geological conditions of the site, making it difficult to control the flow path of the contaminated liquid and unable to comprehensively judge the remediation quality. Furthermore, sampling can only be done vertically and cannot be extended horizontally. This limited sampling makes it impossible to accurately judge the remediation quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a soil remediation test device for environmental protection.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A soil remediation test device for environmental protection comprises a frame, wherein a lifting guide groove is provided inside the frame, a lifting slide is slidably connected inside the lifting guide groove, and the lifting slide can be automatically lifted and lowered, a test spacer is rotatably installed inside the lifting slide, and the test spacer can be automatically rotated, an outer spiral sheet is provided on the outer side of the test spacer, a plurality of groups of transmission cavities are provided inside the test spacer, and the plurality of groups of transmission cavities are spirally distributed in the test spacer, a piston plate is slidably connected inside the transmission cavity, and the piston plate can be automatically lifted and lowered, a plurality of groups of capillary metal tubes are provided at the bottom of the piston plate, an inner metal core is provided inside the capillary metal tubes, a guide hole is provided through the inner wall of the transmission cavity, and the capillary metal tubes are inserted into the guide hole; The outer side of the capillary metal tube is provided with multiple groups of sampling ports, and the interior of the capillary metal tube is slidably connected with multiple groups of sampling baffles, which can slide automatically and seal the sampling ports. A water absorbing block is arranged in the middle of the sampling baffle.

[0006] 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 groups 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.

[0007] Furthermore, a cone head is provided at one end of the capillary metal tube away from the piston plate.

[0008] Furthermore, a rotary sealing joint is provided on the top of the test spacer, and the rotary sealing joint is connected to multiple groups of transmission cavities through connecting pipes. A driving assembly is installed on the outside of the frame, and the driving assembly is connected to the rotary sealing joint through a driving conduit. The driving 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.

[0009] Furthermore, a driving motor is installed at the bottom of the lifting slide, a driving wheel is installed at the output end of the driving motor, an outer gear ring is installed on the outer side of the test spacer, and the outer gear ring is meshed with the driving wheel.

[0010] Furthermore, a transmission shaft is rotatably installed inside the test spacer, and the transmission shaft is located between two groups of transmission cavities. A breaking rod is fixedly installed on the bottom of the transmission shaft, and a transmission wheel is fixedly installed on the top of the transmission shaft. An annular tooth groove is provided at the bottom of the lifting slide, and the transmission wheel is engaged with the annular tooth groove.

[0011] Furthermore, a rinse port is provided above the outer side of the test spacer.

[0012] Furthermore, a winding motor is installed on the side of the frame away from the driving assembly, a winding wheel is installed on the output end of the winding motor, a lifting wire is wound around the outside of the winding wheel, a fixed pulley is installed on the top of the frame, and the lifting wire is fixedly connected to the top of the lifting slide through the fixed pulley.

[0013] Furthermore, anti-sinking bottom plates are provided on both sides of the bottom of the frame, and the driving assembly and the winding motor are installed on the anti-sinking bottom plates.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention screws the test spacer into the soil and then controls the piston plate to descend. The piston plate presses the capillary metal tube group into the soil. Since the transmission cavity and the piston plate are spirally distributed, multiple groups of capillary tube groups are crossed and inserted into the soil in a gradient. The approximate flow direction of the eluent in the soil can be determined by the wetting conditions of the multiple groups of capillary tube groups, which facilitates the adjustment of the eluent position during subsequent repair.

[0015] 2. The present invention controls the sliding of the sampling baffle to open the sampling port, and then controls the piston plate to rise. The piston plate drives the capillary metal tube group to be pulled out of the soil, and the sampling port scrapes the washed soil at its position. By setting multiple groups of sampling ports, multiple groups of samples in the horizontal direction can be extracted. At the same time, since the multiple groups of capillary tube groups are stepped, soil from different soil layers can be extracted, which can more accurately judge the repair effect and ensure comprehensive sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the test spacer of the present invention Figure 1 ; Figure 3 This is a schematic diagram of the test spacer of the present invention Figure 2 ; Figure 4 It is a schematic diagram of the lifting slide of the present invention; Figure 5 is a schematic cross-sectional view of a test spacer of the present invention; Figure 6 This is a schematic diagram of the distribution of the capillary metal tube and the transmission shaft of the present invention; Figure 7 Schematic diagram of the capillary metal tube group of the present invention Figure 8 Schematic diagram of the cross section of the capillary metal tube of the present invention Figure 9 This invention Figure 8 A magnified schematic diagram of part A; Figure 10 It is a schematic diagram of the sampling baffle of the present invention.

[0017] Figure numerals: 1. Frame; 11. Lifting guide groove; 2. Lifting slide; 21. Annular tooth groove; 22. Driving motor; 23. Driving wheel; 3. Test spacer; 31. Outer spiral sheet; 32. Rinse port; 33. Rotary sealing joint; 34. Outer tooth 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. Breaking rod; 318. Transmission shaft; 319. Transmission wheel; 4. Driving assembly; 41. Driving guide tube; 5. Winding motor; 6. Winding wheel; 7. Lifting wire; 8. Fixed pulley. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] A soil remediation test device for environmental protection according to a preferred embodiment of the present invention will be described in detail below.

[0020] Example 1 like Figures 1-10 As shown, a soil remediation test device for environmental protection includes a frame 1, a lifting guide groove 11 is provided inside the frame 1, a lifting slide 2 is slidably connected inside the lifting guide groove 11, and the lifting slide 2 can automatically rise and fall, a test sleeve 3 is rotatably installed inside the lifting slide 2, and the test sleeve 3 can automatically rotate, an outer spiral piece 31 is provided on the outside of the test sleeve 3, a plurality of groups of transmission cavities 35 are provided inside the test sleeve 3, preferably three groups are provided, and the plurality of groups of transmission cavities 35 are spirally distributed in the test sleeve 3, a piston plate 36 is slidably connected inside the transmission cavity 35, and the piston plate 36 can automatically rise and fall, a plurality of groups of capillary metal tubes 39 are provided at the bottom of the piston plate 36, preferably five groups are provided, an inner metal core 314 is provided inside the capillary metal tubes 39, and a guide hole 38 is provided through the inner wall of the transmission cavity 35, and the capillary metal tubes 39 are inserted into the guide hole 38; Multiple groups of sampling ports 310 are provided on the outside of the capillary metal tube 39, with five groups being preferred. Multiple groups of sampling baffles 316 are slidably connected inside the capillary metal tube 39. 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 baffle 316. The sampling baffle 316 is made of the same material as the capillary metal tube 39.

[0021] In-situ soil leaching remediation technology has relatively high requirements for on-site soil conditions. It requires the soil to be sandy or have high hydraulic conductivity, and the lower soil layer of the contaminated zone to be non-permeable. In this way, the leaching liquid can be injected into the contaminated soil, and then the pollutant-containing leaching liquid is sucked to the ground with a pump to remove the pollutants. The leaching liquid is then recycled for use in the remediation process. The disadvantage of this method compared to the ex-situ remediation method is that it is difficult to control the flow path of the contaminated liquid flow, which may expand the scope and degree of soil contamination and affect the efficiency of soil cleaning. Therefore, during the test process, it is particularly important to judge the leaching flow direction. Move the device to the top of the test soil, and then control the test spacer 3 to rotate. The test spacer 3 is screwed into the sandy soil under the action of the outer spiral piece 31, and a large area of ​​test soil is separated inside the test spacer 3. When the test spacer 3 is screwed into place, control the piston plate 36 to descend, and the piston plate 36 pushes the capillary metal tube 39 to descend. The capillary metal tube 39 passes through the guide hole 38. Under the action of its own supporting force and the supporting force of the inner metal core 314, the capillary metal tube 39 is inserted into the sand in a straight state. A plurality of groups of capillary metal tubes 39 are linearly arranged below the piston plate 36. The capillary metal tubes 39 are in a row, and the plurality of groups of piston plates 36 are spirally distributed, so that the rows of capillary metal tubes 39 are staggered and distributed in a stepped manner. Figure 6 As shown, through this design, each group of transmission cavities 35 are not on the same vertical line, the structure is compact, and the elution flow direction can be better detected. Then, an in-situ elution test is performed on the test soil. When the elution liquid passes through the capillary metal tube 39, the water absorption block in the middle of the sampling baffle 316 absorbs a certain amount of elution liquid. After the elution test is completed, the sampling baffle 316 is controlled to slide, and the sampling baffle 316 opens the sampling port 310. 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 spacer 3 away from the soil. When the test spacer 3 is away from the soil, the lifting slide 2 is fixed, and the capillary metal tube 39 is extended again. The soil in the capillary metal tube 39 is taken out to detect the repair effect, and the position of the water absorbent block that absorbs the eluent is observed at the same time. Since the soil is sandy and the capillary metal tubes 39 are arranged in a row, when the eluent passes through the plane of the capillary metal tube 39, the capillary metal tube 39 will contact the eluent. At the same time, multiple groups of capillary metal tubes form a spiral distribution. By observing the distribution of the upper and lower water absorbent blocks, the flow direction of the eluent in the soil can be determined. And because the capillary metal tube 39 is provided with multiple groups of sampling ports 310, samples at different positions can be collected on the same horizontal plane. At the same time, because the multiple groups of capillary metal tubes are spirally distributed, samples from different soil layers can be collected. The sampling is comprehensive, and the collection and flow direction judgment are both realized through the capillary metal tube 39. The structure is compact and the operation is simple.

[0022] Furthermore, a rinsing port 32 is provided on the upper portion of the outer side of the test spacer 3 to facilitate rinsing operations.

[0023] Example 2 like Figure 7-Figure 9 As shown, a top ring 312 is provided at the top of the capillary metal tube 39, 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, and multiple groups 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.

[0024] When the test spacer 3 is screwed into place, the control piston plate 36 is controlled to descend, and the piston plate 36 pushes the capillary metal tube 39 to descend, and the capillary metal tube 39 passes through the guide hole 38. Under the action of its own supporting force and the supporting force 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 squeezes the compression spring 313 through 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 positioned in the sampling port 310; After the elution test is completed, the piston plate 36 is controlled to rise. The piston plate 36 first 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 away from the sampling port 310. The sampling port 310 is opened. 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. There is no need to additionally drive the sampling baffle 316 to slide. This can be achieved while the capillary metal tube 39 is being pulled out and inserted. The structure is compact and the control is simple. By setting the guide sleeve 315, the inner metal core 314 can be guided for sliding, and the sliding is smoother. The guide sleeve 315 is set corresponding to the sampling port 310, so the capillary metal tube 39 can be divided into multiple sampling cavities, and the sampled soil will not be mixed together. At the same time, the guide sleeve 315 is relatively thin and does not affect the capillary metal tube 39 from bending through the guide hole 38.

[0025] Furthermore, a cone head 311 is provided at one 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.

[0026] Example 3 like Figure 1-Figure 3As shown, a rotary sealing joint 33 is provided on the top of the test spacer 3, and the rotary sealing joint 33 is connected to multiple groups of transmission cavities 35 through connecting pipes. A driving assembly 4 is installed on the outside of the frame 1, and the driving assembly 4 is connected to the rotary sealing joint 33 through a driving conduit 41. The driving assembly 4 can press the medium into the transmission cavity 35, and a tension spring 37 is provided between the piston plate 36 and the top of the transmission cavity 35.

[0027] The driving component 4 can adopt a water pump, an oil pump or a negative pressure machine, so the medium can be water, oil or gas, which is convenient for driving the piston plate 36 to descend. 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 spacer 3 will not cause the drive guide tube 41 to be entangled.

[0028] Example 4 like Figure 2 As shown, a driving motor 22 is installed at the bottom of the lifting slide 2, a driving wheel 23 is installed at the output end of the driving motor 22, and an outer gear ring 34 is installed on the outer side of the test spacer 3, and the outer gear ring 34 is engaged with the driving wheel 23.

[0029] By controlling the driving motor 22 to rotate, the driving motor 22 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the test spacer 3 to rotate through the outer gear ring 34.

[0030] Example 5 like Figure 2-Figure 6 As shown, a transmission shaft 318 is rotatably installed inside the test spacer 3, and the transmission shaft 318 is located between the two sets of transmission cavities 35. A breaking rod 317 is fixedly installed at the bottom of the transmission shaft 318, and a transmission wheel 319 is fixedly installed at the top of the transmission shaft 318. An annular tooth groove 21 is provided at the bottom of the lifting slide 2, and the transmission wheel 319 is engaged with the annular tooth groove 21.

[0031] Since the radius of the test spacer 3 is large and it has a certain thickness, it is difficult to screw it into the soil. Therefore, a breaking rod 317 is set at the bottom, and the driving motor 22 is controlled to rotate. The driving motor 22 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the test spacer 3 to rotate through the outer gear ring 34. The test spacer 3 drives the transmission shaft 318 and the breaking rod 317 to rotate. Under the action of the transmission wheel 319 and the annular tooth groove 21, the breaking rod 317 rotates relative to the test spacer 3. Therefore, the breaking rod 317 is first screwed into the soil to break up the soil at the bottom of the test spacer 3, and as the test spacer 3 rotates, the soil is broken into a circle. The test spacer 3 can easily enter the circle, and the outer spiral piece 31 leads the soil out. Therefore, the test spacer 3 can be inserted into the soil under the action of its own gravity.

[0032] Example 6 like Figure 1As shown, a winding motor 5 is installed on the side of the frame 1 away from the driving assembly 4, and a winding wheel 6 is installed on 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, and the lifting wire 7 is fixedly connected to the top of the lifting slide 2 through the fixed pulley 8.

[0033] The winding motor 5 is controlled to rotate, and the winding motor 5 drives the winding wheel 6 to rotate, and the winding wheel 6 drives the lifting slide 2 to rise through the lifting wire 7.

[0034] Furthermore, anti-sinking bottom plates are provided on both sides of the bottom of the frame 1, and the driving 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.

[0035] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A soil remediation test device for environmental protection, comprising a frame (1), characterized in that: The frame (1) is provided with a lifting guide groove (11) inside, and a lifting slide (2) is slidably connected inside the lifting guide groove (11), and the lifting slide (2) can be automatically lifted and lowered. A test sleeve (3) is rotatably installed inside the lifting slide (2), and the test sleeve (3) can be automatically rotated. An outer spiral sheet (31) is provided on the outer side of the test sleeve (3). A plurality of transmission cavities (35) are provided inside the test sleeve (3), and the plurality of transmission cavities (35) are spirally distributed in the test sleeve (3). A piston plate (36) is slidably connected inside the transmission cavity (35), and the piston plate (36) can be automatically lifted and lowered. A plurality of capillary metal tubes (39) are provided at the bottom of the piston plate (36), and an inner metal core (314) is provided inside the capillary metal tubes (39). 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). The outer side of the capillary metal tube (39) is provided with a plurality of sampling ports (310), and the interior of the capillary metal tube (39) is slidably connected to a plurality of sampling baffles (316). 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).

2. A soil remediation test device for environmental protection according to claim 1, characterized in that: A top ring (312) is provided at the top of the capillary metal tube (39), 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), a plurality 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).

3. A soil remediation test device for environmental protection according to claim 2, characterized in that: A cone head (311) is provided at one end of the capillary metal tube (39) away from the piston plate (36).

4. The soil remediation test device for environmental protection according to claim 3, characterized in that: A rotary sealing joint (33) is provided on the top of the test spacer (3), and the rotary sealing joint (33) is connected to multiple groups of transmission cavities (35) through connecting pipes. A driving assembly (4) is installed on the outside of the frame (1), and the driving assembly (4) is connected to the rotary sealing joint (33) through a driving conduit (41). The driving assembly (4) can press the medium into the transmission cavity (35), and a tension spring (37) is provided between the piston plate (36) and the top of the transmission cavity (35).

5. The soil remediation test device for environmental protection according to claim 1, characterized in that: A driving motor (22) is installed at the bottom of the lifting slide (2), a driving wheel (23) is installed at the output end of the driving motor (22), an outer gear ring (34) is installed on the outer side of the test spacer (3), and the outer gear ring (34) is meshed with the driving wheel (23).

6. The soil remediation test device for environmental protection according to claim 5, characterized in that: A transmission shaft (318) is rotatably mounted inside the test spacer (3), and the transmission shaft (318) is located between two sets of transmission cavities (35). A breaking rod (317) is fixedly mounted on the bottom of the transmission shaft (318), and a transmission wheel (319) is fixedly mounted on the top of the transmission shaft (318). An annular tooth groove (21) is provided at the bottom of the lifting slide (2), and the transmission wheel (319) is meshed with the annular tooth groove (21).

7. The soil remediation test device for environmental protection according to claim 1, characterized in that: A rinse port (32) is provided above the outer side of the test spacer (3).

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

9. The soil remediation test device for environmental protection according to claim 8, characterized in that: Anti-sinking bottom plates are provided on both sides of the bottom of the frame (1), and the driving assembly (4) and the winding motor (5) are mounted on the anti-sinking bottom plates.

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