A permeable reactive wall system for preventing and controlling groundwater pollution

Abstract

The present invention discloses a groundwater pollution control permeable reaction wall system in the technical field of groundwater pollution control, comprising a base and a plurality of frames arranged inside the base, wherein the interiors of the plurality of frames are used to place different filter media, and a lifting beam is arranged on the frame, and both left and right ends of the lifting beam are provided with integrally formed contact ends; in the process of placing and lifting out the frame, the friction with the inner wall of the base during the rising process can be avoided by retracting two contact frames, thereby providing good conditions for placing and lifting out, and the relative position of the contact frame with the contact wheel during the retraction and expansion process can reduce the amplitude of shaking during the placement and lifting out process, so that the lifting out and placement process can be carried out quickly, so that the time for replacing the filter medium and placing is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater pollution prevention and control, in particular to a groundwater pollution prevention and control permeable reaction wall system. Background Art

[0002] Permeable reactive wall (PRB) is a technology used for groundwater pollution remediation. By setting a wall containing active materials on the groundwater flow path, the pollutants undergo adsorption, precipitation, oxidation-reduction and other reactions when passing through the wall, thereby achieving the purpose of purifying groundwater. When a modular PRB is used, each filter module unit in the PBB is replaceable. When the active material in a module fails or needs to be replaced, the module can be taken out and replaced separately without dismantling and rebuilding the entire wall, thereby reducing maintenance costs and difficulties. The modular design may also make the monitoring and maintenance of the PRB easier. Monitoring points can be set in each module unit to monitor the removal effect of pollutants and the working status of the wall in real time. At the same time, since the connection between modules is relatively simple, it is also convenient to carry out necessary maintenance and repair work;

[0003] like Figure 1 and Figure 2 As shown, when replacing different modules, the modules need to be lifted from the base. In order to facilitate the replacement of different modules, it is necessary to make a certain distance between the two side walls of the frame of the corresponding module and the base. Otherwise, during the lifting, replacement and placement process, due to insufficient space, greater friction will be generated, making it difficult to lift and install. As shown in the figure, if there is a certain installation distance between multiple modules a, when the sewage flows to multiple modules, even if there is a distance c between adjacent modules a, even if the sewage is inside c, as long as the sewage flows from the inside of c, it will definitely pass through the subsequent module a, so it will not affect the filtering effect. When there is a distance b between the side wall of module a and the inner wall of the base, the sewage will flow to the rear along the distance b between module a and the base, which will cause the sewage to go directly without being filtered by multiple modules a. Summary of the invention

[0004] The object of the present invention is to provide a permeable reaction wall system for preventing and controlling groundwater pollution, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a permeable reaction wall system for preventing and controlling groundwater pollution, comprising a base and a plurality of frames arranged inside the base, wherein different filter media are placed inside the plurality of frames, a hoisting beam is arranged on the frame, and both left and right ends of the hoisting beam are provided with integrally formed contact ends, the hoisting beam is slidably connected to the frame in the vertical direction, and both left and right sides of the hoisting beam are provided with connection groups;

[0006] The connection group includes a contact frame and a wedge block, the contact frame is slidably connected to the side wall of the frame, a first spring is fixedly connected between the contact frame and the frame, the wedge block is fixedly connected to the top of the contact frame, a contact wheel is arranged in front of the frame, and the contact wheel is located on the inner side of the contact frame after sliding outward to the maximum extent along the frame and on the outer side after sliding inward to the maximum extent.

[0007] As a further solution of the present invention, the side walls of the contact frame are rotatably connected to push rods, the push rods are rotatably connected to pull rods, the pull rods are slidably connected to the frame in the vertical direction, the pull rods are rotatably connected to limit rings, the limit rings are slidably connected to support rods, the top ends of the support rods are rotatably connected to connecting parts, the connecting parts are arranged on the side walls of the frame, and the bottom ends of the support rods are rotatably connected to the contact wheels.

[0008] As a further solution of the present invention, an adjustment group is provided on one side of the connecting member;

[0009] The adjustment group includes a cavity, which is opened inside the frame, and the connecting piece is slidably connected to the cavity in the horizontal direction. The right end of the connecting piece is located inside the cavity, and a contact block is provided on the right side of the connecting piece. A second spring is fixedly connected between the contact block and the inner wall of the cavity, and a third spring is fixedly connected between the contact block and the connecting piece. A first rack rod is fixedly connected to the top of the connecting piece near the right side, a gear is meshed above the first rack rod, and a second rack rod is provided above the gear. The second rack rod, the third spring, the first rack rod and the second rack rod are all located inside the cavity, and the second rack rod is slidably connected to the inner wall of the cavity in the vertical direction. A wedge rod is provided below the second rack rod, and the wedge rod is located directly below the second rack rod, and the wedge rod is slidably connected to the side wall of the cavity.

[0010] As a further solution of the present invention, a sealing plate is arranged outside the cavity, and the sealing plate is threadedly connected to the frame through bolts.

[0011] As a further solution of the present invention, the contact block is fixedly connected to a guide rod, the guide rod is slidably connected to the connecting piece, and the third spring is sleeved on the outside of the guide rod.

[0012] As a further solution of the present invention, the outside of the pull rod is slidably connected to a limiting sleeve, the limiting sleeve is fixedly connected to the side wall of the frame, and the pull rod is slidably connected to the frame through the limiting sleeve.

[0013] As a further solution of the present invention, the limiting ring is slidably connected to the outside of the support rod.

[0014] As a further solution of the present invention, a fifth spring is fixedly connected between the second rack rod and the inner wall of the cavity.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] According to the present invention, during the process of placing and lifting the frame, the two contact frames are retracted to avoid friction with the inner wall of the base during rising, thereby providing good conditions for placement and lifting, and the relative position of the contact frames with the contact wheels during the process of retracting and unfolding can reduce the amplitude of shaking during the process of placing and lifting, so that the process of lifting and placing can be carried out quickly, so that the time for replacing the filter medium and placing is greatly shortened, and when the frame is placed, the two contact frames are unfolded to contact the inside of the base and then close the gap between the two contact frames and the inner wall of the base, thereby ensuring that sewage will not slip away during subsequent filtration work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the placement of the base and module a;

[0018] Figure 2 Schematic diagram of the gap between the base and module a;

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the connection relationship between the contact frame and the frame of the present invention;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0022] Figure 6 It is a schematic diagram of the positional relationship between the wedge block and the hoisting beam of the present invention;

[0023] Figure 7 It is a schematic diagram of the connection relationship between the contact frame and the frame of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the adjustment group of the present invention;

[0025] Fig. 9It is a schematic diagram of the positional relationship between the contact block, the connecting member and the second spring of the present invention;

[0026] Fig.10 Schematic diagram of the contact wheel of the present invention in different states.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Base; 2. Frame; 3. Lifting beam; 4. Contact frame; 5. First spring; 6. Contact end; 7. Wedge block; 8. Contact wheel; 9. Push rod; 10. Pull rod; 11. Limiting ring; 12. Support rod; 13. Connecting piece; 14. Cavity; 15. Contact block; 16. Second spring; 17. Third spring; 18. First rack rod; 19. Gear; 20. Second rack rod; 21. Wedge rod; 23. Sealing plate; 24. Limiting sleeve; 25. Guide rod; 26. Fifth spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 10 The present invention provides a technical solution: a permeable reaction wall system for preventing and controlling groundwater pollution, comprising a base 1 and a plurality of frames 2 arranged inside the base 1, wherein different filter media are placed inside the plurality of frames 2, a hoisting beam 3 is arranged on the frame 2, and both left and right ends of the hoisting beam 3 are provided with integrally formed contact ends 6, the hoisting beam 3 is slidably connected to the frame 2 in the vertical direction, and both left and right sides of the hoisting beam 3 are provided with connection groups;

[0031] The connection group includes a contact frame 4 and a wedge block 7. The contact frame 4 is slidably connected to the side wall of the frame 2. A first spring 5 is fixedly connected between the contact frame 4 and the frame 2. The wedge block 7 is fixedly connected to the top of the contact frame 4. A contact wheel 8 is arranged in front of the frame 2. The contact wheel 8 is located on the inner side of the contact frame 4 after sliding outward to the maximum extent along the frame 2 and on the outer side after sliding inward to the maximum extent.

[0032] like Figure 1-Figure 10 As shown:

[0033] A filter medium is placed inside each frame 2, and different filter media are placed in each frame 2 through a mesh material with a limiting effect to limit the filter medium. At this time, the frame 2 becomes a filter module. The filter module formed by multiple frames 2 can filter sewage, and after the filter module is placed, a top cover can be set above the base 1. When the frame 2 is placed inside the base 1 or when the frame 2 is lifted out of the base 1 when the filter medium is replaced, the frame 2 needs to be placed and taken out. The following takes the process of taking out and placing as an example;

[0034] When placed:

[0035] There are two types of placement processes, one is a process of placing multiple frames 2 into the base 1 in sequence, and the other is a process of placing after one of the multiple frames 2 has been taken out and the filter medium has been replaced, but the processes are the same;

[0036] Before the frame 2 is placed inside the base 1, the frame 2 is placed on the ground, and then the lifting beam 3 is lifted by a crane. When the crane lifts the lifting beam 3, the lifting beam 3 will slide up along the frame 2, and the contact end 6 will push the wedge block 7 to move. At this time, the wedge block 7 will drive the contact frame 4 to slide along the frame 2 and compress the first spring 5, so the contact frame 4 originally outside the frame 2 will slide toward the inside of the frame 2, and the originally wider filter module will become smaller. When the contact frame 4 has not entered the frame 2, the distance between the two contact frames 4 is greater than the width of the placement slot inside the base 1, that is, the filter module is larger than the placement slot at this time. , and then the hoisting beam 3 is lifted, and after the frame 2 moves to the top of the base 1, the hoisting beam 3 and the frame 2 are slowly lowered. At this time, the contact frame 4 has entered the frame 2. When the frame 2 enters the base 1, it will be convenient to enter the placement groove inside the base 1 due to its small size, and the contact wheel 8 is located on the inner side of the contact frame 4 after it slides outward to the maximum extent along the frame 2, and on the outer side after it slides inward to the maximum extent (hereinafter referred to as the perfect contact point), that is, when the contact frame 4 has not entered the frame 2, the contact wheel 8 is on the right side of the left side wall of the contact frame 4, and when the contact frame 4 enters the frame 2, the contact wheel 8 is on the left side of the left side wall of the contact frame 4;

[0037] Then when the frame 2 is hoisted into the placement groove inside the base 1, the contact frame 4 enters the frame 2 to facilitate the insertion of the frame 2 into the base 1. The setting of the contact wheel 8 can reduce the shaking of the frame 2 during the descent process. The crane needs to lower the frame 2 slowly and intermittently, and try to center the position of the frame 2, so multiple adjustments are required. Then the frame 2 will shake, and the contact between the contact wheel 8 and the two sides of the inner wall of the base 1 can play a role of limitation and guidance, so that the amplitude of the shaking of the frame 2 is reduced, thereby facilitating the placement of the frame 2. When the bottom end of the frame 2 contacts the inner wall of the base 1, it means that the frame 2 has been placed. At this time, the lifting beam 3 is no longer subject to the force of the hook. At this time, The hook can be separated from the lifting beam 3, and after the frame 2 is placed inside the base 1, the lifting beam 3 will slide down along the frame 2, and the first spring 5 will also drive the two contact frames 4 to expand outward respectively. Then, the left and right side walls of the contact frame 4 will be on the left and right sides of the contact wheel 8, and the two contact frames 4 will definitely contact and fit with the two sides of the inner wall of the base 1 after sliding outward along the frame 2, so that the gap b between the base 1 and the frame 2 is closed by the two contact frames 4. Although the distance between the base 1 and the contact frames 4 on the left and right sides will be different, the states of the two first springs 5 ​​when resetting will also be different, but it will not affect the subsequent work, thereby preventing the sewage from slipping through the gap b during the subsequent work.

[0038] When taking out:

[0039] The frame 2 is hoisted by connecting the crane with the hoisting beam 3. When the hoisting beam 3 is subjected to force, it will slide along the frame 2. Before the frame 2 is placed inside the base 1, the frame 2 is in the placement groove inside the base 1, and then the hoisting beam 3 is hoisted by the crane. When the crane hoists the hoisting beam 3, the hoisting beam 3 will slide along the frame 2. At this time, the contact end 6 will push the wedge block 7 to move. At this time, the wedge block 7 will drive the contact frame 4 to slide along the frame 2 and compress the first spring 5. Then the contact frame 4 originally outside the frame 2 will slide toward the inside of the frame 2. When the frame 2 is lifted up, the two contact racks 4 that were originally in contact with the inner wall of the base 1 will be retracted into the frame 2. At this time, the two contact racks 4 will not be in contact with the inner wall of the base 1 to avoid a large friction during the ascent of the frame 2. During the retraction of the two contact racks 4, the two contact wheels 8 will continue to be on the left and right sides of the two contact racks 4 on the left and right sides. Then, during the ascent of the frame 2, the contact wheels 8 can limit the ascent to avoid a large shaking and collision, so that the frame 2 can be quickly lifted out and then replaced with a new filter medium.

[0040] In the present invention, during the placement and lifting of the frame 2, the two contact frames 4 are retracted to avoid friction with the inner wall of the base 1 during the rise, thereby providing good conditions for placement and lifting, and the relative position of the contact frames 4 and the contact wheel 8 during the retraction and expansion process can reduce the amplitude of shaking during the placement and lifting, so that the lifting and placement process can be carried out quickly, so that the time for replacing the filter medium and placement is greatly shortened, and when the frame 2 is placed, the two contact frames 4 are expanded to contact the inside of the base 1 and then close the gap between the two contact frames 4 and the inner wall of the base 1, thereby ensuring that sewage will not slip away during subsequent filtration work.

[0041] The side walls of the contact frame 4 are rotatably connected with push rods 9, and the push rods 9 are rotatably connected with pull rods 10. The pull rods 10 are slidably connected to the frame 2 in the vertical direction. The pull rods 10 are rotatably connected with limit rings 11, and the limit rings 11 are slidably connected with support rods 12. The top ends of the support rods 12 are rotatably connected with connecting members 13, and the connecting members 13 are arranged on the side walls of the frame 2. The bottom ends of the support rods 12 are rotatably connected to the contact wheel 8.

[0042] like Figure 4 and Figure 5 As shown:

[0043] When the hoisting crossbeam 3 is subjected to force, the two contact frames 4 will be retracted into the frame 2. At this time, the contact frames 4 will slide into the frame 2. When the contact frames 4 move, they will push the pull rod 10 to slide up along the frame 2 through the push rod 9. When the pull rod 10 slides up, it will drive the support rod 12 around the rotation axis on the connecting piece 13 through the limit ring 11 to change from an inclined state to a horizontal state (the horizontal state is as follows Fig. 9 and Fig.10 As shown in the figure, and in the process that the pull rod 10 drives the support rod 12 to rotate through the limit ring 11, the support rod 12 will slide inside the limit ring 11, then the contact wheel 8 will change from an inclined state to a horizontal state, and the position of the contact wheel 8 when the contact frame 4 is retracted into the frame 2 is on the left side of the contact frame 4, and the position of the contact wheel 8 at this time is on the right side relative to the position when the contact frame 4 is not retracted into the frame 2;

[0044] The rotation of the support rod 12 drives the position of the contact wheel 8 to change, thereby folding and storing the contact wheel 8.

[0045] An adjustment group is provided on one side of the connecting member 13;

[0046] The adjustment group includes a cavity 14, which is opened inside the frame 2. The connecting member 13 is slidably connected to the cavity 14 in the horizontal direction. The right end of the connecting member 13 is located inside the cavity 14. A contact block 15 is provided on the right side of the connecting member 13. A second spring 16 is fixedly connected between the contact block 15 and the inner wall of the cavity 14. A third spring 17 is fixedly connected between the contact block 15 and the connecting member 13. A first rack rod 18 is fixedly connected to the top of the connecting member 13 near the right side. A gear 19 is meshed above the first rack rod 18. A second rack rod 20 is provided above the gear 19. The second rack rod 20, the third spring 17, the first rack rod 18 and the second rack rod 20 are all located inside the cavity 14. The second rack rod 20 is slidably connected to the inner wall of the cavity 14 in the vertical direction. A wedge rod 21 is provided below the second rack rod 20. The wedge rod 21 is located directly below the second rack rod 20, and the wedge rod 21 is slidably connected to the side wall of the cavity 14.

[0047] A sealing plate 23 is disposed outside the cavity 14 , and the sealing plate 23 is threadedly connected to the frame 2 via bolts.

[0048] The contact block 15 is fixedly connected with a guide rod 25 , the guide rod 25 is slidably connected with the connecting member 13 , and the third spring 17 is sleeved on the outside of the guide rod 25 .

[0049] The outside of the pull rod 10 is slidably connected to the limiting sleeve 24 , and the limiting sleeve 24 is fixedly connected to the side wall of the frame 2 . The pull rod 10 is slidably connected to the frame 2 through the limiting sleeve 24 .

[0050] The limiting ring 11 is slidably connected to the outside of the support rod 12 .

[0051] A fifth spring 26 is fixedly connected between the second rack rod 20 and the inner wall of the cavity 14 .

[0052] like Figure 5 , Figure 8-Figure 10 As shown:

[0053] When frame 2 is placed:

[0054] Before the frame 2 is lifted, it is on the ground. At this time, the bottom end of the wedge rod 21 will contact the ground and will be pushed into the cavity 14. At this time, the end of the wedge rod 21 is in contact with the contact block 15 and pushes the contact block 15 to slide to the left along the inner wall of the cavity 14. At this time, the contact block 15 compresses the second spring 16 to a certain extent under the push of the wedge rod 21. At this time, the contact block 15 also applies a resistance force to the wedge rod 21 in the reverse direction to keep the wedge rod 21 in this position. When the contact block 15 compresses the second spring 16, it will push the connecting member 13 to slide to the left through the third spring 17. The guide rod 25 can provide guidance for the third spring 17 to prevent the third spring 17 from twisting. The final state is Figure 5As shown;

[0055] Then the hoisting beam 3 can be hoisted. When the hoisting beam 3 is hoisted, the contact frame 4 slides toward the inside of the frame 2. At this time, the push rod 9 drives the pull rod 10 to slide along the limit sleeve 24, and the limit ring 11 drives the support rod 12 to change from an inclined state to a horizontal state. After the support rod 12 and the contact wheel 8 rotate to a horizontal state (such as Fig.10 As shown in Figure c), the contact frame 4 is completely retracted into the interior of the frame 2, but the position of the contact wheel 8 is closer to the left side relative to the perfect contact point of the contact wheel 8. Then the hook lifts the lifting beam 3 and the frame 2, and the frame 2 will gradually separate from the ground. At this time, it is necessary to pull the wedge rod 21 outward manually or by mechanical means so that the wedge rod 21 can separate from the contact block 15 and then slide down along the cavity 14. This process is relatively simple. Cylinders can be added to the inner walls of the wedge rod 21 and the cavity 14, and the elongation of the cylinder can be controlled by the built-in monitoring points of each module unit. Therefore, it is not emphasized in the figure, but in actual practice, the manual method is more recommended. At this time, the wedge rod 21 will protrude from the frame 2, and the wedge rod 2 During the downward movement, the wedge rod 21 will gradually separate from the contact block 15. At this time, the second rack rod 20 will also assist the second rack rod 20 in descending under the elastic relaxation of the fifth spring 26. When the side wall of the wedge rod 21 gradually separates from the side wall of the contact block 15, the contact block 15 will gradually move toward the direction close to the wedge rod 21 under the elastic relaxation of the second spring 16, and will pull the connecting member 13 to move rightward together through the third spring 17. At this time, the connecting member 13 will also drive the support rod 12 and the contact wheel 8 to move rightward in a horizontal state, and at this time, the first rack rod 18 will mesh with the gear 19 to drive the gear 19 to rotate. After the wedge rod 21 is completely separated from the contact block 15, the contact wheel 8 also moves rightward to the position of the perfect contact point (such as Fig.10 d), at this time, the second rack rod 20 will drop to a position meshing with the upper portion of the gear 19, and the gear 19 will be positioned by the first rack rod 18 and the second rack rod 20, so that the contact wheel 8 can be maintained at this horizontal position;

[0056] Then the hook lifts the frame 2 and the lifting beam 3 and moves them toward the inside of the base 1 for placement. At this time, the shaking amplitude of the frame 2 can be reduced by the restriction of the contact wheel 8. During the descent of the frame 2, the restriction of the gear 19 by the first rack rod 18 and the second rack rod 20 can prevent the connecting member 13 from moving, thereby preventing the contact wheel 8 from deflecting after contacting the inner wall of the base 1.

[0057] When the bottom end of the frame 2 is about to be placed in the position of contacting the inner wall of the base 1, the wedge rod 21 will first contact the inner bottom wall of the base 1 and make the wedge rod 21 slide up along the cavity 14. At this time, the wedge rod 21 will first lift the second rack rod 20, and then contact the side wall of the contact block 15 and drive the second rack rod 20 to slide up along the cavity 14. When the contact block 15 compresses the second spring 16, it will still give the wedge rod 21 a lateral resistance, so that the wedge rod 21 will not move when it is pulled up or down without external force, so that the wedge rod 21 is stuck in this position. At this time, the fifth spring 26 will be compressed, and when the second rack rod 20 rises, the restriction on the gear 19 will be released. However, at this time, the frame 2 is about to contact the base 1, so it basically does not shake or shakes to a very small extent at this time, so there will be no great impact after the second rack rod 20 releases the positioning of the gear 19;

[0058] At this time, the contact block 15 will be pushed to the left by the wedge rod 21, so the contact block 15 will slide horizontally inside the cavity 14 and compress the second spring 16. At this time, the contact block 15 will push the connecting piece 13, the support rod 12 and the contact wheel 8 to move to the left through the third spring 17. However, at this time, the two contact wheels 8 on the left and right sides have two states relative to the inside of the base 1. One state is that one contact wheel 8 is in contact with the inner wall of the base 1 while the other is not in contact. In the other state, neither of them is in contact with the inner wall of the base 1. However, no matter which state, when the contact block 15 is pushed by the third spring 17, When the connecting piece 13, the support rod 12 and the contact wheel 8 move to the left, the two contact wheels 8 on the left and right sides will be forced to move toward the inner wall of the base 1. When the two contact wheels 8 move to contact the inner wall of the base 1, the third spring 17 will be compressed as the contact block 15 moves and the contact wheel 8 cannot continue to move. However, at this time, the two contact wheels 8 have completely contacted the inner wall of the base 1, and the rear frame 2 drops to a state of contact with the inner wall of the base 1. At this time, the wedge rod 21 also slides up to the limit state inside the cavity 14, and then the hook is separated from the lifting beam 3. At this time, Figure 5 In the state shown, the two contact frames 4 are spread out to contact the inner wall of the base 1 to seal the interval, and the support rod 12 and the contact wheel 8 are also in an inclined state, but at this time the second spring 16 and the third spring 17 are both in a compressed state, and although the left and right contact wheels 8 are in contact with both sides of the inner wall of the base 1, the compression degree of the third spring 17 on both sides will be different, so at this time the support rods 12 on the left and right sides are in Figure 5 The downward tilt in the state will also be different, but at this time the filter module has been placed and can be used normally;

[0059] After long-term use, the filter medium needs to be replaced. At this time, the specific frame 2, that is, the frame 2 that needs to replace the filter medium, needs to be lifted out. At this time, when lifting the frame 2, the wedge rod 21 is already inside the cavity 14, and the side wall of the wedge rod 21 keeps pushing the contact block 15, and the second spring 16 and the third spring 17 are both compressed, and when the wedge rod 21 contacts the contact block 15, the contact block 15 is forced to move toward the direction of the contact wheel 8, so the third spring 17 and the second spring 16 are both compressed, then when the lifting beam 3 is lifted, the contact frame 4 slides toward the inside of the frame 2, which will cause the limit ring 11 to drive the support rod 12 from the inclined state to the horizontal state. Rotate, and before that, the connecting member 13 wants to move toward the inner wall of the base 1, so when the support rod 12 rotates, its rotation axis will be closer to the inner wall of the base 1, then at this time, the contact wheel 8 will compress the third spring 17 again due to contact with the inner wall of the base 1 during the process of rotating to the horizontal state, until the third spring 17 is compressed to the limit or close to the limit position, then at this time, when the contact wheel 8 is lifted with the frame 2, it will rotate along both sides of the inner wall of the base 1 to adapt to the detachment of the frame 2, and then in the process of rising, the contact wheel 8 directly contacts the inner wall of the base 1, so that the shaking amplitude of the frame 2 is close to disappearing, and then it can be lifted out quickly;

[0060] The cavity 14 can be opened conveniently through the sealing plate 23 , while the limiting sleeve 24 and the limiting ring 11 sliding to the outside of the support rod 12 are used to reduce the influence of external impurities on the sliding effect when the frame 2 enters the inside of the base 1 .

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A permeable reaction wall system for preventing and controlling groundwater pollution, comprising a base (1) and a plurality of frames (2) arranged inside the base (1), wherein different filter media are placed inside the plurality of frames (2), characterized in that: The frame (2) is provided with a lifting beam (3), the left and right ends of the lifting beam (3) are provided with integrally formed contact ends (6), the lifting beam (3) is slidably connected to the frame (2) in the vertical direction, and the left and right sides of the lifting beam (3) are provided with connection groups; The connection group comprises a contact frame (4) and a wedge block (7); the contact frame (4) is slidably connected to a side wall of the frame (2); a first spring (5) is fixedly connected between the contact frame (4) and the frame (2); the wedge block (7) is fixedly connected to the top of the contact frame (4); a contact wheel (8) is arranged in front of the frame (2); the contact wheel (8) is located on the inner side of the contact frame (4) after sliding outwards to the maximum extent along the frame (2) and on the outer side of the contact frame (4) after sliding inwards to the maximum extent.

2. A permeable reaction wall system for preventing and controlling groundwater pollution according to claim 1, characterized in that: The side walls of the contact frame (4) are rotatably connected to push rods (9), the push rods (9) are rotatably connected to pull rods (10), the pull rods (10) are slidably connected to the frame (2) in the vertical direction, the pull rods (10) are rotatably connected to limit rings (11), the limit rings (11) are slidably connected to support rods (12), the top ends of the support rods (12) are rotatably connected to connecting members (13), the connecting members (13) are arranged on the side walls of the frame (2), and the bottom ends of the support rods (12) are rotatably connected to the contact wheels (8).

3. A permeable reaction wall system for preventing and controlling groundwater pollution according to claim 2, characterized in that: An adjustment group is provided on one side of the connecting member (13); The adjustment group comprises a cavity (14), the cavity (14) being opened inside the frame (2), the connecting member (13) being slidably connected to the cavity (14) in a horizontal direction, the right end of the connecting member (13) being located inside the cavity (14), a contact block (15) being arranged on the right side of the connecting member (13), a second spring (16) being fixedly connected between the contact block (15) and the inner wall of the cavity (14), a third spring (17) being fixedly connected between the contact block (15) and the connecting member (13), and a first rack rod (18) being fixedly connected at a position close to the right side of the top end of the connecting member (13). ), a gear (19) is meshed above the first rack rod (18), a second rack rod (20) is arranged above the gear (19), the second rack rod (20), the third spring (17), the first rack rod (18) and the second rack rod (20) are all located inside the cavity (14), the second rack rod (20) is slidably connected to the inner wall of the cavity (14) in the vertical direction, a wedge rod (21) is arranged below the second rack rod (20), the wedge rod (21) is located directly below the second rack rod (20), and the wedge rod (21) is slidably connected to the side wall of the cavity (14).

4. A permeable reaction wall system for preventing and controlling groundwater pollution according to claim 3, characterized in that: A sealing plate (23) is provided outside the cavity (14), and the sealing plate (23) is threadedly connected to the frame (2) via bolts.

5. A permeable reaction wall system for preventing and controlling groundwater pollution according to claim 3, characterized in that: The contact block (15) is fixedly connected to a guide rod (25), the guide rod (25) is slidably connected to the connecting member (13), and the third spring (17) is sleeved outside the guide rod (25).

6. A permeable reaction wall system for preventing and controlling groundwater pollution according to claim 2, characterized in that: The outside of the pull rod (10) is slidably connected to a limiting sleeve (24), the limiting sleeve (24) is fixedly connected to the side wall of the frame (2), and the pull rod (10) is slidably connected to the frame (2) via the limiting sleeve (24).

7. A permeable reactive wall system for preventing and controlling groundwater pollution according to claim 2, characterized in that: The limiting ring (11) is slidably connected to the outside of the support rod (12).

8. The permeable reaction wall system for preventing and controlling groundwater pollution according to claim 3, characterized in that: A fifth spring (26) is fixedly connected between the second rack rod (20) and the inner wall of the cavity (14).

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