Device for testing PRB (Permeable Reactive Barrier) filled with novel material

Abstract

The invention discloses a device for testing a PRB (permeable reactive barrier) filled with a novel material, and relates to the technical field of permeable reactive barrier testing. The driving bin is fixed on one side of the base, and a driving cylinder body is fixed in the driving bin; the fixing plate is fixed to the upper end face of the base and arranged on the side, close to the driving bin, of the base. The bottom plate is fixed to the upper end face of the base and located on one side of the fixing plate, and an adjusting cylinder body is fixed in the bottom plate; the at least two supporting pieces are fixed on the bottom plate; the adjusting assembly is fixed to the side, away from the driving bin, of the fixing plate; the adjusting bin is fixed to the side, away from the fixing plate, of the adjusting assembly and is fixed through one supporting piece, and two sets of conversion grooves are symmetrically formed in the inner wall of the adjusting bin; the drainage bin is arranged on the other supporting piece in a sliding mode and located on the side, away from the adjusting assembly, of the adjusting bin; the clamping assembly is mounted on the drainage bin; the actual condition of underground water flowing can be accurately simulated, and the simulation accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of permeability reaction wall testing, in particular to a permeability reaction wall testing device filled with a novel material PRB. Background Art

[0002] A permeable reactive wall is a passive in-situ groundwater treatment technology using a filler material. Installed across the contaminated groundwater flow path, the wall degrades and retains pollutants through contact with the groundwater through the reactive material within the wall, ultimately remediating the contaminated groundwater.

[0003] The existing permeability reaction wall testing device has a single method for simulating groundwater, which is to increase the pressure through an air pressure pump to simulate the pressure of groundwater. However, the air flow of the air pressure pump can easily enter the pores of the permeability reaction wall, resulting in uneven pressure distribution, affecting the accuracy of the simulation. In addition, the existing testing device is not easy to quickly replace the material of the permeability reaction wall for control testing, which affects the test efficiency. In addition, the sealing effect is poor after replacement, resulting in pressure leakage.

[0004] In view of the above problems, the present invention provides a PRB permeability reaction wall testing device filled with a new material to solve the above problems. Summary of the Invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PRB permeability reaction wall test device filled with new materials, comprising: a base; a drive chamber, fixed to one side of the base, and a drive cylinder fixed inside the base; a fixed plate, fixed to the upper end surface of the base, and arranged on the side of the base close to the drive chamber; a bottom plate, fixed to the upper end surface of the base, located on one side of the fixed plate, and an adjustment cylinder fixed inside the bottom plate; at least two supports, both fixed to the bottom plate; an adjustment assembly, fixed to the side of the fixed plate away from the drive chamber; an adjustment chamber, fixed to the side of the adjustment assembly away from the fixed plate, and fixed by one of the supports, and the inner wall of the adjustment chamber is symmetrically opened. Two sets of conversion grooves are provided; a drainage bin is slidably arranged on the other support member and is located on the side of the adjustment bin away from the adjustment component; a clamping component is installed on the drainage bin and is located on the side close to the adjustment bin; a collecting bin is detachably installed on the drainage bin and is located on the side of the drainage bin away from the clamping component; wherein, the adjustment component includes a connecting cylinder, a water inlet and a sewage outlet are symmetrically opened on the connecting cylinder, a driving column is slidably arranged in the connecting cylinder, the driving column is driven by a driving cylinder, one end of the driving column extends into the adjustment bin and is fixed with a conversion component, a filter disc is detachably installed on the side of the conversion component close to the driving column, and the conversion component is driven and converted by the conversion groove.

[0006] Preferably, the conversion assembly includes: a connecting column, which is fixed on the driving column and has a plurality of swirl blades fixed on the circumference of its outer wall; a sliding ring, which is coaxially arranged on the connecting column with a plurality of swirl blades; a limiting ring, which is fixed on the side of the sliding ring away from the driving column, and has a plurality of arc-shaped limiting grooves on the circumference of the limiting ring; a conversion plate, which is configured into a plurality of plates, which are slidably set on the limiting grooves using a sliding shaft, and correspond one-to-one to the plurality of limiting grooves; a rotating ring, which is rotatably set on the side of the plurality of conversion plates away from the limiting rings, and is slidably connected to the plurality of conversion plates.

[0007] Preferably, two sliding columns are symmetrically provided on the side wall of the rotating ring, both of the sliding columns are slidably connected to the rotating ring, and a pressing spring is provided between the sliding columns and the rotating ring, a guide block is rotatably provided on the sliding column, the guide block is slidably connected to the conversion groove, and the guide block is elliptical.

[0008] Preferably, the conversion groove includes a sliding groove 1 and a sliding groove 2, and the sliding groove 1 and the sliding groove 2 are arranged to avoid the water inlet and the sewage outlet, and the sliding groove 1 and the sliding groove 2 are both provided with a stepped groove at one end away from the driving column, and the sliding groove 1 is provided with a driving groove 1 at one end away from the driving column, and the driving groove 1 is a spiral groove, and the other end of the driving groove 1 is communicated with the stepped groove on the sliding groove 2 at one end away from the driving column, and the sliding groove 2 is provided with a driving groove 2 at one end away from the driving column, and the driving groove 2 is a spiral groove, and its spiral direction is opposite to that of the driving groove 1, and the other end of the driving groove 2 is communicated with the stepped groove on the sliding groove 1 at one end away from the driving column.

[0009] Preferably, the clamping assembly includes: a sliding seat, which is slidably arranged on the drainage bin and driven by the adjusting motor; a mounting seat, which is fixed on the sliding seat; a fixed ring, which is fixed on the drainage bin; a reset column, which is configured as a plurality of columns, circumferentially fixed on the fixed ring, and slidably connected to the sliding seat and the mounting seat, and a reset spring is sleeved on each of the reset columns; a snap-fit groove, which is opened on the side of the sliding seat and the mounting seat away from the fixed ring; and a test assembly, which is snap-fitted into the snap-fit groove.

[0010] Preferably, the test assembly comprises: a test chamber, an outer wall of which is fixed with a clamping disc, the clamping disc being clamped in a clamping groove; and a permeation reaction wall fixed in the test chamber.

[0011] Preferably, the permeation reaction wall is cylindrical and is made of a combination of multiple different materials. A sealing component is provided at one end of the test chamber close to the drainage chamber, and the sealing component is slidably arranged in the drainage chamber.

[0012] Preferably, the sealing assembly includes: a sealing ring, which is slidably arranged in the drainage chamber, and a plurality of pressing columns are fixed at one end away from the test chamber, the pressing columns are slidably arranged in the drainage chamber, and the outer walls of the pressing columns are sleeved with pressing springs; at least three first sealing rings are installed on the outer wall of the sealing ring; and a second sealing ring is installed on one end of the sealing ring close to the test chamber.

[0013] Compared with the prior art, the present invention provides a PRB permeable reaction wall testing device filled with a new material, which has the following beneficial effects: the present invention can adjust the state of sewage entering the adjustment chamber through a conversion component. When a static groundwater simulation test is required, the conversion component is placed close to the connecting cylinder so that the water inlet directly sends the underground sewage into the space between the conversion component and the test component. Thereafter, the conversion component is pushed close to the test component through a driving column to adjust the water pressure. After reaching the set value, the driving column is slowly pushed so that the amount of sewage reduced by passing through the test component is consistent with the rate at which the conversion component approaches the test component, thereby ensuring stable water pressure and improving simulation accuracy until the collection in the collection chamber is completed.

[0014] When simulating the test of flowing groundwater, there are two test methods. The first test method is: when only the decontamination ability of the infiltration reaction wall is tested, the filter plate is installed to filter the sediment in the groundwater, and the conversion assembly is pushed close to the test assembly by the driving column. At this time, the conversion assembly is opened through the conversion slot, and then water is allowed to flow into the water inlet so that the sewage is located between the connecting cylinder and the conversion assembly. Then the driving column pulls the conversion assembly close to the connecting cylinder, and the approach speed is the same as the groundwater flow rate, thereby completing the test of the decontamination ability of the infiltration reaction wall; the second test method is: when it is necessary to determine the overall decontamination ability of the infiltration reaction wall for groundwater, the process remains unchanged. The filter plate is removed before the test to allow the sediment and sewage to flow together, and the sediment and sewage are mixed by the swirl blade to prevent the sediment from falling to the bottom of the regulating chamber due to gravity and affecting the test results, thereby accurately simulating the actual situation of groundwater flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the regulating component in the present invention; Figure 3 A schematic diagram of the structure of the conversion component in the present invention Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle Figure 5 Schematic diagram of the structure of the conversion tank in the present invention Figure 6 It is a structural schematic diagram of the clamping assembly in the present invention; Figure 7 Schematic diagram of the structure of the test assembly in the present invention; Figure 8 Schematic diagram of the structure of the sealing assembly of the present invention; In the figure: 1, base; 2, drive chamber; 3, drive cylinder; 4, fixing plate; 5, bottom plate; 6, support member; 7, adjustment assembly; 8, adjustment chamber; 9, clamping assembly; 10, drainage chamber; 11, collection chamber; 71, connecting tube; 72, water inlet; 73, sewage outlet; 74, driving column; 75, conversion assembly; 76, filter plate; 81, conversion groove; 751, connecting column; 752, sliding ring; 753, swirl blade; 754, limiting ring; 755, limiting groove; 756, conversion plate; 7 57. Sliding shaft; 758. Rotating ring; 7581. Sliding column; 7582. Guide block; 811. Sliding groove one; 812. Driving groove one; 813. Sliding groove two; 814. Driving groove two; 815. Step groove; 91. Sliding seat; 92. Mounting seat; 93. Fixed ring; 94. Reset column; 95. Snap-fit groove; 96. Test assembly; 961. Test chamber; 962. Snap-fit disk; 963. Permeation reaction wall; 964. Sealing ring; 965. Pressing column; 966. First sealing ring. DETAILED DESCRIPTION

[0016] Reference Figures 1-8The present invention provides a technical solution: a PRB permeation reaction wall test device filled with new materials, comprising: a base 1; a driving chamber 2, fixed on one side of the base 1, and having a driving cylinder 3 fixed therein; a fixing plate 4, fixed on the upper end surface of the base 1, and arranged on the side of the base 1 close to the driving chamber 2; a bottom plate 5, fixed on the upper end surface of the base 1, located on one side of the fixing plate 4, and having an adjusting cylinder fixed therein; at least two supports 6, both fixed on the bottom plate 5; an adjusting component 7, fixed on the side of the fixing plate 4 away from the driving chamber 2; an adjusting chamber 8, fixed on the side of the adjusting component 7 away from the fixing plate 4, and fixed by one of the supports 6, and the inner wall of the adjusting chamber 8 is symmetrically provided with two groups of conversion grooves 81; a drainage chamber 10, sliding It is arranged on the other support member 6 and is located on the side of the regulating bin 8 away from the regulating component 7; the clamping component 9 is installed on the drainage bin 10 and is located on the side close to the regulating bin 8; the collecting bin 11 is detachably installed on the drainage bin 10 and is located on the side of the drainage bin 10 away from the clamping component 9; wherein, the regulating component 7 includes a connecting cylinder 71, and the connecting cylinder 71 is symmetrically provided with a water inlet 72 and a sewage outlet 73, and a driving column 74 is slidably arranged in the connecting cylinder 71, and the driving column 74 is driven by the driving cylinder 3, and one end of the driving column 74 extends into the regulating bin 8 and is fixed with a conversion component 75, and the conversion component 75 is detachably installed with a filter disc 76 on the side close to the driving column 74, and the conversion component 75 is driven and converted by the conversion slot 81.

[0017] In this embodiment, the conversion assembly 75 includes: a connecting column 751, which is fixed on the driving column 74 and has a plurality of swirl blades 753 fixed on the circumference of its outer wall; a sliding ring 752, which is coaxially arranged on the connecting column 751 with a plurality of swirl blades 753; a limiting ring 754, which is fixed on the side of the sliding ring 752 away from the driving column 74, and has a plurality of arc-shaped limiting grooves 755 on the circumference of the limiting ring 754; a conversion plate 756, which is configured as a plurality of, and is slidably set on the limiting grooves 755 using a sliding shaft 757, and corresponds one to one with the plurality of limiting grooves 755; a rotating ring 758, which is rotatably set on the side of the plurality of conversion plates 756 away from the limiting ring 754, and is slidably connected to the plurality of conversion plates 756.

[0018] That is, when the rotating ring 758 rotates, the multiple conversion plates 756 are driven to slide along the limiting grooves 755, so that the multiple conversion plates 756 can perform the conversion operation of expanding and closing.

[0019] As a preferred embodiment, two sliding columns 7581 are symmetrically provided on the side wall of the rotating ring 758. The two sliding columns 7581 are both slidably connected to the rotating ring 758, and a pressing spring is provided between the sliding columns 758 and the rotating ring 758. A guide block 7582 is rotatably provided on the sliding column 7581. The guide block 7582 is slidably connected to the conversion groove 81, and the guide block 7582 is elliptical.

[0020] As a preferred embodiment, the conversion groove 81 includes a sliding groove 1 811 and a sliding groove 2 813, and the sliding groove 1 811 and the sliding groove 2 813 are arranged to avoid the water inlet 72 and the sewage outlet 73, and the sliding groove 1 811 and the sliding groove 2 813 are both provided with a stepped groove 815 at one end away from the driving column 74, and the sliding groove 1 811 is provided with a driving groove 1 812 at one end away from the driving column 74, and the driving groove 1 812 is a spiral groove, and the other end of the driving groove 1 812 is communicated with the step groove 815 on the sliding groove 2 813 at one end away from the driving column 74, and the sliding groove 2 813 is provided with a driving groove 2 814 at one end away from the driving column 74, and the driving groove 2 814 is a spiral groove, and its spiral direction is opposite to that of the driving groove 1 812, and the other end of the driving groove 2 814 is communicated with the step groove 815 on the sliding groove 1 811 at one end away from the driving column 74.

[0021] It should be noted that the long side length of the guide block 7582 is greater than the width of sliding groove 1 811, sliding groove 2 813, driving groove 1 812 and driving groove 2 814, and the depth of the depression of the step groove 815 close to the sliding groove 1 811 and the sliding groove 2 813 is smaller than the depth of the depression of the step groove 815 away from the sliding groove 1 811 and the sliding groove 2 813, thereby facilitating the reciprocating motion of the guide block 7582 along the set trajectory.

[0022] That is to say, when the plurality of conversion plates 756 are in the closed state, when the driving column 74 pushes the conversion assembly 75 to slide along the conversion groove 81, the guide block 7582 first slides in the sliding groove 1 811, and then reaches the intersection of the sliding groove 1 811 and the driving groove 1 812. At this time, the guide block 7582 rotates through the driving groove 1 812, so that the guide block 7582 enters the driving groove 1 812, and then the driving column 74 continues to push the conversion assembly 75 to slide, so that the guide block 7582 drives the rotating ring 758 to rotate. When the guide block 7582 slides to the driving groove 1 After the intersection of groove 1 812 and the stepped groove 815, the guide block 7582 falls into the stepped groove 815, and then the driving column 74 pulls the conversion assembly 75 to slide in the opposite direction. At this time, multiple conversion plates 756 complete the opening and closing operation, and then the guide block 7582 slides along the sliding groove 2 813 to the initial position, completing the opening and closing conversion of the conversion plate 756, and through the spiral direction of the driving groove 1 812 and the driving groove 2 814, the rotating ring 758 can be rotated back and forth, thereby completing the reciprocating opening and closing operation of the driving conversion plate 756, and testing different environments.

[0023] In this embodiment, the clamping assembly 9 includes: a sliding seat 91, which is slidably set on the drainage bin 10 and is driven by the adjusting motor; a mounting seat 92, which is fixed on the sliding seat 91; a fixed ring 93, which is fixed on the drainage bin 10; a reset column 94, which is configured as a plurality of columns, circumferentially fixed on the fixed ring 93, and slidably connected to the sliding seat 91 and the mounting seat 92, and a reset spring is sleeved on each of the reset columns 94; a snap-fit groove 95, which is opened on the side of the sliding seat 91 and the mounting seat 92 away from the fixed ring 93; and a test assembly 96, which is snap-fitted into the snap-fit groove 95.

[0024] Among them, when conducting the test, the test component 96 is first clamped in the adjustment chamber 8, and then the sliding seat 91 is driven to slide by the adjustment motor, and the mounting seat 92 and the drainage chamber 10 are driven to slide synchronously, so that the sliding seat 91 and the mounting seat 92 press and clamp the test component 96, and the reset spring can provide a continuous pre-tightening force for the clamping, thereby providing dynamic compensation, so that the sliding seat 91 and the mounting seat 92 can fit tightly against the test component 96, and can maintain sealing even under high pressure or slight deformation of the components, thereby improving the sealing effect.

[0025] It should be noted that a notch is provided inside the end of the regulating chamber 8 close to the drainage chamber 10, and the notch corresponds to the test component 96, which is convenient for clamping the test component 96, and a sealing gasket is installed in the notch, thereby cooperating with the clamping component 9 to complete the sealing operation at both ends of the test component 96.

[0026] As a preferred embodiment, the test assembly 96 includes: a test chamber 961 , an outer wall of which is fixed with a snap-in disc 962 , the snap-in disc 962 being snap-fitted into the snap-in groove 95 ; and a permeation reaction wall 963 fixed into the test chamber 961 .

[0027] That is to say, by fixing the permeation reaction wall 963 in the test chamber 961, the permeation reaction wall 963 can be quickly replaced, thereby improving the test efficiency.

[0028] As a preferred embodiment, the infiltration reaction wall 963 is cylindrical and adopts a combination of multiple different materials. The test chamber 961 is provided with a sealing assembly at one end close to the drainage chamber 10, and the sealing assembly is slidably set in the adjustment chamber 8 and the drainage chamber 10 respectively.

[0029] That is to say, by installing the penetration reaction wall 963 in the test chamber 961, efficient and convenient modular testing can be achieved, so that different material combinations or types of penetration reaction walls 963 can be easily replaced, greatly improving the efficiency of the test.

[0030] As a preferred embodiment, the sealing assembly includes: a sealing ring 964, which is slidably arranged in the drainage chamber 10, and a plurality of pressing columns 965 are fixed at the end away from the test chamber 961, and the pressing columns 965 are slidably arranged in the drainage chamber 10, and the outer wall of the pressing column 965 is sleeved with a pressing spring; at least three first sealing rings 966 are installed on the outer wall of the sealing ring 964; and a second sealing ring is installed on the end of the sealing ring 964 close to the test chamber 961.

[0031] That is to say, when the test chamber 961 is installed, the sealing assembly located in the drainage chamber 10 is moved close to the test chamber 961 by adjusting the push of the motor, and then the end face of the test chamber 961 contacts the second sealing ring, and continues to push to make the sealing ring 964 slide until the snap-in groove 95 fits the snap-in disc 962, completing the installation of the test chamber 961, improving the sealing during the test, and reducing the impact of the external environment on the test, and when the test assembly 96 is clamped and sealed, the clamping assembly 9 and the sealing assembly can perform a double seal on the test assembly 96, thereby greatly improving the sealing effect, and when sealing, the return spring and the pressure spring can provide double dynamic compensation, and the sealing effect can be maintained even under high pressure or slight deformation of the components, and the return spring and the pressure spring can also clamp and seal test assemblies 96 of different lengths for comparative testing or to meet specific specifications.

[0032] Specifically, first, the test component 96 is quickly clamped by the clamping component 9, which is convenient for comparative testing of various infiltration reaction walls 963, and the sealing component can improve the sealing degree between the test component 96 and the regulating chamber 8 and the drainage chamber 10, thereby further improving the test accuracy. Then, the state of the sewage entering the regulating chamber 8 is adjusted by the conversion component 75. When a static groundwater simulation test is required, the conversion component 75 is moved close to the connecting tube 71 so that the water inlet 72 directly sends the underground sewage between the conversion component 75 and the test component 96. Then, the conversion component 75 is pushed close to the test component 96 by the driving column 74 to adjust the water pressure. After reaching the set value, the driving column 74 is slowly pushed so that the amount of sewage reduced by passing through the test component 96 is consistent with the rate at which the conversion component 75 approaches the test component 96, thereby ensuring stable water pressure and improving simulation accuracy until the collection in the collection chamber 11 is completed.

[0033] When simulating the test of flowing groundwater, there are two test methods. The first test method is: when only the decontamination ability of the infiltration reaction wall 963 is tested, the filter disc 76 is installed to filter the sediment in the groundwater, and the drive column 74 is used to push the conversion assembly 75 close to the test assembly 96. At this time, the conversion assembly 75 is opened through the conversion slot 81, and then water is allowed to flow into the water inlet 72 so that the sewage is located between the connecting tube 71 and the conversion assembly 75. Then, the drive column 74 pulls the conversion assembly 75 close to the connecting tube 71, and the approach speed is the same as the groundwater flow rate, thereby completing the test of the decontamination ability of the infiltration reaction wall 963. The second test method is: when it is necessary to determine the overall decontamination ability of the infiltration reaction wall 963 for groundwater, the process remains unchanged. Before the test, the filter disc 76 is removed to allow the sediment and sewage to flow together, and the sediment and sewage are mixed by the swirl vane 753 to prevent the sediment from falling to the bottom of the regulating chamber 8 due to gravity and affecting the test results, thereby accurately simulating the actual situation of groundwater flow and improving the test accuracy.

[0034] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A PRB permeable reaction wall testing device filled with new materials, characterized in that: include: Base (1); A drive chamber (2) is fixed on one side of the base (1), and a drive cylinder (3) is fixed inside the drive chamber; A fixing plate (4) is fixed to the upper end surface of the base (1) and is arranged on a side of the base (1) close to the drive compartment (2); A bottom plate (5) is fixed to the upper end surface of the base (1), is located on one side of the fixing plate (4), and has an adjusting cylinder fixed therein; At least two support members (6) are fixed on the bottom plate (5); An adjustment assembly (7) is fixed on a side of the fixing plate (4) away from the drive compartment (2); An adjustment chamber (8) is fixed to a side of the adjustment assembly (7) away from the fixed plate (4) and is fixed via one of the support members (6), and the inner wall of the adjustment chamber (8) is symmetrically provided with two sets of conversion grooves (81); A drainage chamber (10) is slidably disposed on the other support member (6) and is located on a side of the regulating chamber (8) away from the regulating assembly (7); A clamping assembly (9) is mounted on the drainage chamber (10) and is located on a side close to the regulating chamber (8); A collecting chamber (11) is detachably mounted on the drainage chamber (10) and is located on a side of the drainage chamber (10) away from the clamping assembly (9); The regulating assembly (7) comprises a connecting cylinder (71), a water inlet (72) and a sewage outlet (73) are symmetrically provided on the connecting cylinder (71), a driving column (74) is slidably provided in the connecting cylinder (71), the driving column (74) is driven by the driving cylinder (3), one end of the driving column (74) extends into the regulating chamber (8) and is fixed with a conversion assembly (75), a filter disc (76) is detachably installed on a side of the conversion assembly (75) close to the driving column (74), and the conversion assembly (75) is driven by the conversion slot (81).

2. A PRB permeable reaction wall testing device filled with new material according to claim 1, characterized in that, The conversion component (75) includes: A connecting column (751) is fixed on the driving column (74), and a plurality of swirl blades (753) are fixed on the circumference of the outer wall of the connecting column; A sliding ring (752) is coaxially arranged on the connecting column (751) using a plurality of swirl blades (753); A limiting ring (754) is fixed on a side of the sliding ring (752) away from the driving column (74), and a plurality of arc-shaped limiting grooves (755) are formed on the circumference of the limiting ring (754); The conversion plate (756) is configured as a plurality of plates, and is slidably arranged on the limiting groove (755) using a sliding shaft (757), and corresponds one-to-one to the plurality of limiting grooves (755); The rotating ring (758) is rotatably arranged on a side of the plurality of conversion plates (756) away from the limiting ring (754) and is slidably connected to the plurality of conversion plates (756).

3. A new material filled PRB permeable reaction wall testing device according to claim 2, characterized in that, Two sliding columns (7581) are symmetrically arranged on the side wall of the rotating ring (758), and the two sliding columns (7581) are both slidably connected to the rotating ring (758), and a pressing spring is arranged between the sliding columns (7581) and the rotating ring (758). A guide block (7582) is rotatably arranged on the sliding column (7581), and the guide block (7582) is slidably connected to the conversion groove (81), and the guide block (7582) is elliptical.

4. A PRB permeable reaction wall testing device filled with new material according to claim 3, characterized in that: The conversion groove (81) includes a sliding groove 1 (811) and a sliding groove 2 (813), and the sliding groove 1 (811) and the sliding groove 2 (813) are arranged away from the water inlet (72) and the sewage outlet (73). The sliding groove 1 (811) and the sliding groove 2 (813) are provided with a stepped groove (815) at one end away from the driving column (74). The sliding groove 1 (811) is provided with a driving groove 1 (812) at one end away from the driving column (74). The driving groove 1 (812) is a spiral groove. The other end of the driving groove 1 (812) is connected to the end of the stepped groove (815) on the sliding groove 2 (813) away from the driving column (74), and the end of the sliding groove 2 (813) away from the driving column (74) is provided with a driving groove 2 (814), and the driving groove 2 (814) is a spiral groove, and its spiral direction is opposite to that of the driving groove 1 (812), and the other end of the driving groove 2 (814) is connected to the end of the stepped groove (815) on the sliding groove 1 (811) away from the driving column (74).

5. A PRB permeable reaction wall testing device filled with new material according to claim 1, characterized in that, The clamping assembly (9) comprises: A sliding seat (91) is slidably disposed on the drainage chamber (10) and driven by the regulating motor; A mounting seat (92) fixed on the sliding seat (91); A fixing ring (93) fixed on the drainage chamber (10); The reset columns (94) are configured as a plurality of reset columns, which are circumferentially fixed on the fixed ring (93) and are slidably connected to the sliding seat (91) and the mounting seat (92), and the reset columns (94) are all sleeved with reset springs; A snap-fit groove (95) is provided on a side of the sliding seat (91) and the mounting seat (92) away from the fixing ring (93); The test assembly (96) is snap-fitted into the snap-fitting slot (95).

6. A PRB permeable reaction wall testing device filled with new material according to claim 5, characterized in that: The test assembly (96) comprises: A test chamber (961) has a snap-on disc (962) fixed to its outer wall, the snap-on disc (962) being snap-on in the snap-on groove (95); The permeation reaction wall (963) is fixed in the test chamber (961).

7. A PRB permeable reaction wall testing device filled with new material according to claim 6, characterized in that: The permeation reaction wall (963) is cylindrical and is made of a combination of multiple different materials. A sealing component is provided at one end of the test chamber (961) close to the drainage chamber (10), and the sealing component is slidably arranged in the drainage chamber (10).

8. A PRB permeable reaction wall testing device filled with new material according to claim 7, characterized in that: The sealing assembly comprises: A sealing ring (964) is slidably disposed in the drainage chamber (10), and a plurality of pressing columns (965) are fixed to one end away from the test chamber (961), wherein the pressing columns (965) are slidably disposed in the drainage chamber (10), and a pressing spring is sleeved on the outer wall of the pressing column (965); At least three first sealing rings (966) are installed on the outer wall of the sealing ring (964); A second sealing ring is mounted on one end of the sealing ring (964) close to the testing chamber (961).

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