A heavy metal contaminated groundwater in-situ remediation and treatment device

Abstract

The invention relates to the technical field of groundwater in-situ remediation and treatment, and specifically to an in-situ remediation and treatment device for groundwater contaminated by heavy metals, comprising an injection shell, a shunt pipe is fixed on one side of the injection shell, five groups of auxiliary pipes are installed through the top of the injection shell, a main through pipe is fixed on the top of each group of auxiliary pipes, a movable plate is rotatably installed on the inner side of the injection shell, a rotating shaft is installed through the top of the movable plate, a support plate is sleeved on the outer side of the rotating shaft, a fixed plate is fixed on the inner side of the injection shell, two limiting grooves are provided on one side of the fixed plate close to the support plate, the inner side of each limiting groove is slidably engaged with the limiting plate, a push plate is sleeved on the outer side of the top end of the rotating shaft, a bottom plate is sleeved on the outer side of the bottom end of the rotating shaft, a cylinder is fixed on one side of the push plate and the bottom plate, a recovery component is arranged at the bottom of the shunt pipe, and the invention can reduce the flow rate while greatly improving the mixing effect of the precipitant, and can also classify and treat water flows with different heavy metal contents.

Description

Technical Field

[0001] The invention relates to the technical field of in-situ repair and treatment of groundwater, in particular to an in-situ repair and treatment device for groundwater contaminated by heavy metals. Background Art

[0002] Heavy metal contaminated groundwater in-situ remediation and treatment devices usually use physical, chemical or biological methods to perform in-situ remediation of heavy metal contaminated groundwater. It is necessary to first conduct a detailed investigation and analysis of the contaminated groundwater to determine the type, concentration and scope of contamination of heavy metals. At the same time, it is necessary to understand the hydrogeological conditions of the groundwater, including the type of aquifer, permeability, groundwater flow rate and flow direction, etc. Then, through physical and chemical processes such as ion exchange, adsorption, and precipitation, the heavy metal ions in the groundwater are fixed or converted into a low-toxic form; or specific microorganisms are used for bioremediation so that the heavy metals are absorbed, converted or degraded by microorganisms.

[0003] In-situ remediation technology is to treat heavy metal-contaminated groundwater directly at the contaminated site. By injecting remediation agents, using microorganisms or plants, etc., heavy metals can be transformed, fixed or degraded without pumping out groundwater, thus reducing secondary damage to the environment.

[0004] However, the existing technologies mostly directly inject relevant repair agents (such as precipitants). However, directly injecting the repair agent without slowing down the water flow rate may cause the repair agent to have a short contact time with the heavy metal, resulting in insufficient reaction, affecting the repair effect, and may be quickly washed away by the water flow, resulting in waste and difficulty in sustained operation; the pollution may spread with the water flow, increasing the difficulty of treatment, and the failure to divert the water flow with and without exceeding the heavy metal standard will cause the repair agent to be wasted by the water flow that does not exceed the standard, increasing costs, and processing a large amount but low efficiency, which may cause the treated water to be polluted again, prolonging the treatment time, increasing the difficulty of treatment, and making it difficult to accurately control the overall treatment effect.

[0005] Therefore, a heavy metal contaminated groundwater in-situ remediation and treatment device is needed to solve the problem of not slowing down the water flow rate, not diverting the water flow with and without exceeding the heavy metal standard, and the difficulty of treatment. Summary of the invention

[0006] In order to solve the problems that water flow velocity is difficult to control and difficult to manage, it is difficult to divert water flows with different heavy metal contents, and management is difficult, the present application provides an in-situ remediation and management device for heavy metal contaminated groundwater.

[0007] The technical solution of the present invention is: an in-situ remediation and treatment device for heavy metal contaminated groundwater, comprising an injection shell, a shunt pipe is fixed on one side of the injection shell, five groups of auxiliary pipes are installed through the top of the injection shell, and a main through pipe is fixed on the top of each group of the auxiliary pipes, a movable plate is rotatably installed on the inner side of the injection shell, a rotating shaft is installed through the top of the movable plate, a support plate is sleeved on the outer side of the rotating shaft, a fixed plate is fixed on the inner side of the injection shell, two limiting grooves are provided on the side of the fixed plate close to the support plate, the inner side of each of the limiting grooves is slidably engaged with the limiting plate, a main path is penetrated on the top of the fixed plate, and a spray hole is provided on the side of the main path away from the fixed plate, a push plate is sleeved on the outer side of the top end of the rotating shaft, a bottom plate is sleeved on the outer side of the bottom end of the rotating shaft, a cylinder is fixed on one side of the push plate and the bottom plate, and a recovery component is provided at the bottom of the shunt pipe; the recovery component is assembled to recover the precipitate of the heavy metal reaction.

[0008] Specifically, two motors are fixed on the top of the shunt pipe, and a rotating shaft is fixed on the bottom of the output ends of the two motors. A dividing plate is fixed on the outside of each rotating shaft, a partition is fixed on the inside of the shunt pipe, and an obstruction plate is fixed on the inside of the shunt pipe, and the obstruction plate is located on the inner sides of the two dividing plates;

[0009] Specifically, the two cylinders are located inside one end of the diverter pipe close to the injection shell.

[0010] Specifically, nine of the auxiliary tubes form a group, each of which is connected to the main channel, a vertical hole is opened through the top of each push plate, and the auxiliary tube is located on the inner side of the vertical hole, guide holes are opened through the top and bottom of the injection shell, and the rotating shaft passes through the inner side of the guide hole, and an inclined groove is opened on the side of each push plate and the bottom plate close to the injection shell, and the rotating shaft is located on the inner side of the inclined groove.

[0011] Specifically, each of the fixed plates is provided with a movable groove on one side close to the support plate, the movable groove is located on the inner side of the two limit grooves, a limiting rod is fixed on the inner side of the movable groove, a sealing plate is slidably connected to the outer side of the limiting rod, and a groove is provided on the side of the sealing plate away from the fixed plate, a spring is fixed on the inner side of each groove, and a clamping block is fixed on the other end of the spring.

[0012] Specifically, a side groove is provided on one side of the support plate close to the fixed plate, and the clamping block is located on the inner side of the side groove. The end of the support plate away from the movable plate and close to the fixed plate is designed as an arc surface. The arc surface of the support plate is provided with two side grooves, and the inner sides of the two side grooves are rotatably connected to the limit plate through connecting parts.

[0013] Specifically, an upper cover is fixed on the top of the injection shell, and five groups of auxiliary pipes pass through the upper cover, the main through pipe is located on the top of the upper cover, and a bottom cover is fixed on the bottom of the injection shell.

[0014] Specifically, the recycling part includes a recycling box, which is fixed to the bottom of the diversion tube. A support plate is rotatably installed at the bottom of the diversion tube. Threaded rods are respectively fixed to the bottoms of the two rotating shafts. Top plates are installed on the outer sides of the two threaded rods through threads, and the top of the top plate is fitted with the bottom of the support plate.

[0015] Specifically, a heavy metal detection sensor is installed inside the injection shell.

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

[0017] (1) The in-situ remediation and treatment device for heavy metal contaminated groundwater described in the present invention adopts a movable plate and a support plate. By coordinating the extension of the cylinder, the movable plate and the support plate are changed from a "I" shape to a "V" shape, and the precipitant is injected at the same time. Compared with the prior art, when the water flow hits the movable plate, it will be subjected to a reaction force, which will initially reduce the flow velocity and change the direction of the water flow, making the water flow chaotic, thereby increasing the mixing effect of the precipitant and water. After multiple collisions and mixing, the water flow velocity is greatly reduced, and the mixing effect of the precipitant is greatly improved. There is no need to pump out the groundwater for treatment, which avoids further damage to the groundwater environment and also reduces treatment costs and energy consumption.

[0018] (2) The in-situ remediation and treatment device for heavy metal contaminated groundwater described in the present invention adopts a barrier plate, a movable plate and a support plate to further slow down the water after mixing with the precipitant to ensure that the reaction is fully carried out. The precipitation product will gradually separate from the water to form a precipitate.

[0019] (3) In the in-situ remediation and treatment device for heavy metal-contaminated groundwater described in the present invention, the separated sediment needs to be properly handled. A recovery component is used to release the seal of the diversion pipe. The sediment moves into the inner side of the recovery box under the impact force of part of the water flow and the action of gravity, thereby completing the collection of the sediment.

[0020] (4) The in-situ remediation and treatment device for heavy metal contaminated groundwater described in the present invention uses a push plate and a bottom to perform the primary sealing of the water flow and the precipitant, and then a top cover and a bottom cover perform the secondary sealing, thereby improving the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention;

[0023] Figure 2 The overall structural cross-section diagram of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention Figure 1 ;

[0024] Figure 3 for Figure 2 A magnified image of point A;

[0025] Figure 4 The overall structural cross-section diagram of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention Figure 2 ;

[0026] Figure 5 Schematic diagram of the three-dimensional structure of the injection shell of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention Figure 1 ;

[0027] Figure 6 A schematic diagram of the three-dimensional structure of the recovery component of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0028] Figure 7 Schematic diagram of the three-dimensional structure of the injection shell of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention Figure 2 ;

[0029] Figure 8 A schematic diagram of the three-dimensional structure of a push plate of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention;

[0030] Fig. 9 A schematic diagram of the three-dimensional structure of the bottom plate of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0031] Fig.10 A schematic diagram of the three-dimensional structure of a movable plate of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0032] Fig.11 A schematic diagram of the three-dimensional structure of a support plate of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0033] Fig.12 A schematic diagram of the three-dimensional structure of a fixed plate of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0034] Fig.13 for Fig.12 The enlarged view of point B;

[0035] Fig.14 for Fig.12 Enlarged view of point C;

[0036] Fig.15 A cross-sectional view of a movable plate of the in-situ remediation and treatment device for heavy metal-contaminated groundwater provided by the present invention;

[0037] Fig.16A cross-sectional view of a fixed plate of the in-situ remediation and treatment device for heavy metal contaminated groundwater provided by the present invention.

[0038] In the figure: 1. injection shell; 2. diverter pipe; 3. motor; 4. main through pipe; 5. movable plate; 51. rotating shaft; 6. support plate; 61. side groove; 62. side groove; 7. auxiliary pipe; 8. main channel; 9. spray hole; 10. groove; 11. block; 12. movable groove; 13. limiting rod; 14. sealing plate; 15. limiting groove; 16. limiting plate; 17. fixed plate; 18. upper cover; 19. bottom cover; 22. rotating shaft; 23. dividing plate; 24. partition; 25. obstruction plate; 26. recovery part; 261. recovery box; 262. threaded rod; 263. top plate; 264. support plate; 27. cylinder; 28. push plate; 281. inclined groove; 282. vertical hole; 29. ​​bottom plate; 30. guide hole. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0040] Example: Figure 1-Figure 16 As shown, a heavy metal contaminated groundwater in-situ remediation and treatment device comprises an injection shell 1, a shunt pipe 2 is fixed on one side of the injection shell 1, five groups of auxiliary pipes 7 are installed through the top of the injection shell 1, a main through pipe 4 is fixed on the top of each group of auxiliary pipes 7, a movable plate 5 is rotatably installed on the inner side of the injection shell 1, a rotating shaft 51 is installed through the top of the movable plate 5, a support plate 6 is sleeved on the outer side of the rotating shaft 51, a fixed plate 17 is fixed on the inner side of the injection shell 1, and the fixed plate 17 Two limiting grooves 15 are provided on one side close to the support plate 6, and a limiting plate 16 is slidably engaged with the inner side of each limiting groove 15. A main path 8 is provided through the top of the fixed plate 17, and a spray hole 9 is provided on the side of the main path 8 away from the fixed plate 17. A push plate 28 is sleeved on the outer side of the top end of the rotating shaft 51, and a bottom plate 29 is sleeved on the outer side of the bottom end of the rotating shaft 51. A cylinder 27 is fixed on one side of the push plate 28 and the bottom plate 29, and a recovery member 26 is provided at the bottom of the shunt pipe 2;

[0041] The recovery unit 26 is configured to recover the precipitate of the heavy metal reaction.

[0042] In this embodiment, the movable plate 5, the support plate 6 and the fixed plate 17 are arranged in pairs, the number of the rotating shafts 51 is the same as the number of the movable plate 5, the support plate 6 and the fixed plate 17, the number of the auxiliary pipes 7 is consistent with the number of the fixed plate 17, and the spray holes 9 are provided with a plurality of them. The staff controls the extension of the telescopic ends of the two cylinders 27, the telescopic end of one of the cylinders 27 pushes the bottom plate 29 to move along the inner side of the bottom cover 19 to the side away from the shunt pipe 2, and the telescopic end of the other cylinder 27 pushes the push plate 28 to move along the inner side of the top cover to the side away from the shunt pipe 2, and the bottom plate 29 and the push plate 28 push the rotating shaft 51 to move along the inner side of the guide hole 30 to the side away from the shunt pipe 2 through the inclined groove 281. The rotating shaft 51 drives the movable plate 5 to rotate forward, and the rotating shaft 51 drives the supporting plate 6 to rotate reversely. When the output end of the cylinder 27 is extended to the limit, the side of the bottom plate 29 away from the shunt pipe 2 is in contact with the inner wall of the side of the bottom cover 19 away from the shunt pipe 2, and the side of the push plate 28 away from the shunt pipe 2 is in contact with the inner wall of the side of the top cover away from the shunt pipe 2, so that the movable plate 5 and the supporting plate 6 change from a "I" shape to a "V" shape. When the water flow hits the movable plate 5, it will be subjected to a reaction force, which will initially reduce the flow velocity and change the direction of the water flow, making the water flow chaotic, thereby increasing the mixing effect of the precipitant and water. After multiple collisions and mixing, the water flow velocity is greatly reduced, and the mixing effect of the precipitant is greatly improved.

[0043] Furthermore, a heavy metal detection sensor is installed inside the injection shell 1 .

[0044] In this embodiment, the staff installs the device inside the heavy metal contaminated groundwater channel, and then connects the selected precipitant storage tank to the five main pipes 4 through pipelines, and injects the precipitant into the main pipe 4, the auxiliary pipe 7, the main channel 8 and the spray hole 9, so as to prepare for the subsequent work;

[0045] When groundwater passes through the injection shell 1 and the diversion pipe 2, when the heavy metal detection sensor inside the injection shell 1 detects that the heavy metal content exceeds the standard, the heavy metal detection sensor transmits the data to the processor in the monitoring room, and the processor feeds back to the staff;

[0046] Furthermore, two cylinders 27 are located inside one end of the diverter pipe 2 close to the injection shell 1 .

[0047] Furthermore, nine auxiliary pipes 7 form a group, each auxiliary pipe 7 is connected to the main channel 8, a vertical hole 282 is opened through the top of each push plate 28, and the auxiliary pipe 7 is located on the inner side of the vertical hole 282, a guide hole 30 is opened through the top and bottom of the injection shell 1, and the rotating shaft 51 passes through the inner side of the guide hole 30, and an inclined groove 281 is opened on the side of each push plate 28 and the bottom plate 29 close to the injection shell 1, and the rotating shaft 51 is located on the inner side of the inclined groove 281.

[0048] In this embodiment, the number of the inclined grooves 281 and the guide holes 30 located at the top or bottom of the injection shell 1 is consistent with the number of the rotating shafts 51 , and the number of the vertical holes 282 is consistent with the number of the auxiliary pipes 7 .

[0049] Furthermore, a movable groove 12 is provided on a side of each fixed plate 17 close to the support plate 6, and the movable groove 12 is located on the inner side of the two limit grooves 15. A limiting rod 13 is fixed on the inner side of the movable groove 12, and a sealing plate 14 is slidably connected to the outer side of the limiting rod 13. A groove 10 is provided on the side of the sealing plate 14 away from the fixed plate 17, and a spring is fixed on the inner side of each groove 10, and a clamping block 11 is fixed to the other end of the spring.

[0050] In this embodiment, a plurality of limiting rods 13 are provided, and all limiting rods 13 are located on the inner side of the sealing plate 14 , and a plurality of grooves 10 are provided.

[0051] Furthermore, a side groove 62 is provided on one side of the support plate 6 close to the fixed plate 17, and the blocking block 11 is located on the inner side of the side groove 62. The end of the support plate 6 away from the movable plate 5 and close to the fixed plate 17 is designed as an arc surface. The arc surface of the support plate 6 is provided with two side grooves 61, and the inner sides of the two side grooves 61 are rotatably connected to the limit plate 16 through connecting parts.

[0052] In this embodiment, the support plate 6 drives the two limit plates 16 to move along the inner sides of the two limit grooves 15, and the support plate 6 drives the sealing plate 14 to move along the outer side of the limiting rod 13 through the clamping block 11. When one side of the sealing plate 14 contacts one side of the movable groove 12, the support plate 6 squeezes the clamping block 11 through the side groove 62 to move into the inner side of the groove 10, thereby releasing the closure of the spray hole 9, and the precipitant enters the inner side of the injection shell 1 under the action of pressure.

[0053] Furthermore, an upper cover 18 is fixed to the top of the injection shell 1 , and the five groups of auxiliary pipes 7 pass through the upper cover 18 , the main through pipe 4 is located on the top of the upper cover 18 , and a bottom cover 19 is fixed to the bottom of the injection shell 1 .

[0054] Furthermore, two motors 3 are fixed on the top of the shunt tube 2, and a rotating shaft 22 is fixed on the bottom of the output ends of the two motors 3. A dividing plate 23 is fixed on the outside of each rotating shaft 22, a partition plate 24 is fixed on the inside of the shunt tube 2, and an obstruction plate 25 is fixed on the inside of the shunt tube 2, and the obstruction plate 25 is located on the inner side of the two dividing plates 23.

[0055] In this embodiment, the staff controls the extension of the telescopic ends of the two cylinders 27 while controlling the two motors 3 to rotate forward. The two motors 3 drive the rotating shaft 22 to rotate forward. The two rotating shafts 22 drive the two dividing plates 23 to rotate forward to guide the water flow from one side of the partition 24 to the side where the obstruction plate 25 is fixed. The water flow after mixing with the precipitant is guided by the dividing plate 23 into the side of the partition 24 where the obstruction plate 25 is fixed. The obstruction plate 25 further decelerates the water flow. The precipitant reacts with the heavy metals in the water flow to produce precipitates and accumulates on the top of the support plate 264. Finally, the water flows out from the side of the diversion pipe 2 away from the injection shell 1.

[0056] Furthermore, the recovery part 26 includes a recovery box 261, which is fixed to the bottom of the diversion tube 2. A support plate 264 is rotatably installed at the bottom of the diversion tube 2. Threaded rods 262 are respectively fixed to the bottom of the two rotating shafts 22. Top plates 263 are threadedly installed on the outer sides of the two threaded rods 262, and the top of the top plate 263 is fitted with the bottom of the support plate 264.

[0057] In this embodiment, the heavy metal detection sensor inside the injection shell 1 detects that the heavy metal content exceeds the standard, and the staff controls the telescopic ends of the two cylinders 27 to extend while controlling the two motors 3 to rotate forward. At the same time, the two rotating shafts 22 drive the two threaded rods 262 to rotate forward, and the two threaded rods 262 drive the top plate 263 to push the support plate 264 to rotate forward, so as to close the bottom of the shunt pipe 2;

[0058] After the heavy metal index reaches the standard, the staff controls the telescopic rod to retract, so that the movable plate 5, the support plate 6 and the sealing plate 14 return to their original positions, close the spray hole 9, and control the two motors 3 to reverse at the same time. The closed partition 24 is fixed with one side of the obstruction plate 25 while guiding the water flow to the other side of the partition 24. After the top plate 263 returns to its original position, the support plate 264 reverses under the action of gravity, releasing the blockage of the diversion pipe 2, and the sediment moves into the inner side of the recovery box 261 under the impact force of part of the water flow and the action of gravity, completing the collection of the sediment.

[0059] Working principle: The initial state is as follows Figure 1-Figure 16 As shown, the staff installs the device inside the heavy metal polluted groundwater channel, and then connects the selected precipitant storage tank to the five main through pipes 4 through pipelines, injects the precipitant into the main through pipe 4, the auxiliary pipe 7, the main channel 8 and the spray hole 9. When the groundwater passes through the injection shell 1 and the diversion pipe 2, when the heavy metal detection sensor inside the injection shell 1 detects that the heavy metal content exceeds the standard, the heavy metal detection sensor transmits the data to the processor in the monitoring room, and the processor feeds back to the staff. The staff controls the extension of the telescopic ends of the two cylinders 27 to release the sealing of the spray hole 9, and the precipitant enters the inner side of the injection shell 1. The support plate 6 continues to move to the side away from the diversion pipe 2, so that the movable plate 5 and the support plate 6 change from a "one" shape to a "V" shape, initially reducing the flow rate and making the water flow chaotic;

[0060] The staff controls the extension of the telescopic ends of the two cylinders 27 and controls the two motors 3 to rotate forward at the same time. The two motors 3 drive the rotating shafts 22 to rotate forward. The two rotating shafts 22 drive the two dividing plates 23 to rotate forward to guide the water flow from one side of the partition plate 24 to the side where the obstruction plate 25 is fixed, and the bottom of the diverter pipe 2 is closed;

[0061] The water flow after mixing with the precipitant is guided by the dividing plate 23 and enters the side of the partition plate 24 where the obstruction plate 25 is fixed. The obstruction plate 25 further decelerates the water flow. The precipitant reacts with the heavy metals in the water flow to produce precipitates which accumulate on the top of the supporting plate 264. Finally, the water flow flows out from the side of the diverter pipe 2 away from the injection shell 1.

[0062] After the heavy metal index reaches the standard, the staff controls the telescopic rod to retract, releases the seal on the diversion pipe 2, and the sediment moves into the inside of the recovery box 261, completing the collection of the sediment.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An in-situ remediation device for heavy metal-contaminated groundwater, comprising an injection shell (1), a shunt pipe (2) being fixed to one side of the injection shell (1), characterized in that: Five groups of auxiliary tubes (7) are installed through the top of the injection shell (1), and a main through tube (4) is fixed on the top of each group of auxiliary tubes (7). A movable plate (5) is rotatably installed on the inner side of the injection shell (1), and a rotating shaft (51) is installed through the top of the movable plate (5). A support plate (6) is sleeved on the outer side of the rotating shaft (51). A fixed plate (17) is fixed on the inner side of the injection shell (1), and two limiting grooves (15) are provided on one side of the fixed plate (17) close to the support plate (6). Each of the movable plates (5) is rotatably installed on the inner side of the injection shell (1). The inner sides of the limit grooves (15) are slidably engaged with the limit plates (16); a main path (8) is provided through the top of the fixed plate (17); a spray hole (9) is provided on the side of the main path (8) away from the fixed plate (17); a push plate (28) is sleeved on the outer side of the top end of the rotating shaft (51); a bottom plate (29) is sleeved on the outer side of the bottom end of the rotating shaft (51); a cylinder (27) is fixed on one side of the push plate (28) and the bottom plate (29); and a recovery member (26) is provided at the bottom of the diverter pipe (2); A movable groove (12) is provided on a side of each fixed plate (17) close to the support plate (6), the movable groove (12) is located on the inner side of the two limit grooves (15), a limit rod (13) is fixed on the inner side of the movable groove (12), a sealing plate (14) is slidably connected to the outer side of the limit rod (13), a groove (10) is provided on the side of the sealing plate (14) away from the fixed plate (17), a spring is fixed on the inner side of each groove (10), a clamping block (11) is fixed on the other end of the spring, a side groove (62) is provided on the side of the support plate (6) close to the fixed plate (17), and the clamping block (11) is located on the inner side of the side groove (62), a side of the support plate (6) away from the movable plate (5) and close to the fixed plate (17) is designed as an arc surface, the arc surface of the support plate (6) is provided with two side grooves (61), and the inner sides of the two side grooves (61) are rotatably connected to the limit plate (16) through connecting components; The recovery member (26) is configured to recover the heavy metal reaction precipitate flowing out of the diversion pipe (2).

2. The in-situ remediation and treatment device for heavy metal contaminated groundwater according to claim 1, characterized in that: Two motors (3) are fixed on the top of the diverter tube (2), a rotating shaft (22) is fixed on the bottom of the output ends of the two motors (3), a dividing plate (23) is fixed on the outside of each rotating shaft (22), a partition plate (24) is fixed on the inside of the diverter tube (2), an obstruction plate (25) is fixed on the inside of the diverter tube (2), and the obstruction plate (25) is located on the inside of the two dividing plates (23).

3. The in-situ remediation and treatment device for heavy metal contaminated groundwater according to claim 2, characterized in that: The two cylinders (27) are located inside the flow dividing pipe (2) and close to one end of the injection shell (1).

4. The in-situ remediation and treatment device for heavy metal contaminated groundwater according to claim 1, characterized in that: Nine auxiliary tubes (7) form a group, each auxiliary tube (7) is connected to the main channel (8), a vertical hole (282) is formed through the top of each push plate (28), and the auxiliary tube (7) is located inside the vertical hole (282), a guide hole (30) is formed through the top and bottom of the injection shell (1), and the rotating shaft (51) passes through the inside of the guide hole (30), and each push plate (28) and the bottom plate (29) are formed with an inclined groove (281) on one side close to the injection shell (1), and the rotating shaft (51) is located inside the inclined groove (281).

5. The in-situ remediation and treatment device for heavy metal contaminated groundwater according to claim 1, characterized in that: An upper cover (18) is fixed on the top of the injection shell (1), and five groups of auxiliary pipes (7) pass through the upper cover (18). The main through pipe (4) is located on the top of the upper cover (18), and a bottom cover (19) is fixed on the bottom of the injection shell (1).

6. The in-situ remediation and treatment device for heavy metal contaminated groundwater according to claim 2, characterized in that: The recovery member (26) comprises a recovery box (261), the recovery box (261) being fixed to the bottom of the diverter tube (2), a support plate (264) being rotatably mounted on the bottom of the diverter tube (2), threaded rods (262) being respectively fixed to the bottoms of the two rotating shafts (22), top plates (263) being threadably mounted on the outer sides of the two threaded rods (262), and the top of the top plate (263) being in contact with the bottom of the support plate (264).

Images