Groundwater pollution deep layer extraction and purification equipment based on ecological environment protection

Abstract

The present invention discloses a groundwater pollution depth stratified extraction and purification device based on ecological environment protection, belonging to the field of groundwater extraction and treatment technology, comprising: a water supply pipe, vertically inserted in a ground borehole; a stratified water sampling device, coaxially installed below the water supply pipe, the lower end of the stratified water sampling device is deep in the ground water; a plurality of delivery pipelines are arranged and distributed, one end of the delivery pipeline is connected to the water supply pipe; a flow control solenoid valve, sealed and connected to the other end of the delivery pipeline, one side of the flow control solenoid valve is horizontally connected to a drain pipe; a purification tank, a water filtration and purification unit is arranged inside the tank; the present invention can adaptively adjust the water filtration and purification intensity of the water filter seat through a porous filter mechanism according to the suspended matter content and the size distribution ratio of the suspended matter in the groundwater at different depths, thereby avoiding the rapid accumulation of suspended matter and impurities in the water filter seat.

Description

Technical Field

[0001] The present invention belongs to the technical field of groundwater extraction and treatment, and in particular is a groundwater pollution depth stratification extraction and purification device based on ecological environment protection. Background Art

[0002] With the acceleration of industrialization and the expansion of urbanization, untreated industrial wastewater, agricultural pesticide and fertilizer loss, and domestic garbage leachate and other pollutants are often discharged into the ground without effective treatment, resulting in increasingly serious groundwater pollution problems. In traditional technology, it is usually necessary to sample and test groundwater to determine the types and concentrations of pollutants therein, and before groundwater testing, it is necessary to purify and pre-treat it to prevent suspended matter or impurities in the groundwater from affecting the detection structure; currently, in the prior art, such as the invention patent with publication number CN118477392A, it is possible to transport groundwater to a filtration sedimentation tank and filter and purify it through filter screen one and filter screen two, thereby effectively cleaning suspended matter and impurities in the water; however, groundwater contains a lot of particulate impurities, and long-term use will cause the filter mesh to be blocked, and it is difficult for general cleaning devices to discharge particulate impurities from the mesh, resulting in reduced water filtration efficiency, and there are significant differences in the suspended matter content and impurity particle size of groundwater at different depths. The general filtration structure is prone to suspended matter accumulation and concentration at a certain filter screen, resulting in failure of filtration and purification;

[0003] Therefore, it is necessary to provide groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above purpose, the present invention provides the following technical solution: a groundwater pollution depth stratification extraction and purification device based on ecological environment protection, which includes:

[0005] The water supply pipe is vertically inserted into the hole drilled in the ground;

[0006] A stratified water sampling device is coaxially installed below the water delivery pipe, the lower end of which is immersed in the groundwater to extract groundwater at different depths;

[0007] A plurality of delivery pipelines are arranged and distributed, one end of each delivery pipeline is connected to the water delivery pipe, and each stratified groundwater extracted from the stratified water sampling device is delivered separately through the water delivery pipe;

[0008] A flow control solenoid valve is sealed and connected to the other end of the delivery pipeline, one side of the flow control solenoid valve is horizontally connected to a drain pipe, and a water pump is connected in series between the flow control solenoid valve and the drain pipe;

[0009] A purification tank, wherein a water filtration and purification unit is arranged inside the tank, and the water filtration and purification unit pre-treats the extracted groundwater so as to remove suspended matter and other impurities in the groundwater;

[0010] The water filtration and purification unit comprises a water filter seat, wherein the water filter seats are arranged in a plurality of upper and lower portions, a filter screen is sealed at the bottom of the purification tank, a water accumulation cavity is formed between the bottom of the filter screen and the purification tank, a transfer tube is connected to the middle of the filter screen, and the cross section of the transfer tube is an inverted J-shaped structure, the purification tank is connected to the drain pipe through the transfer tube, so that the groundwater transported in the drain pipe enters the water accumulation cavity through the transfer tube;

[0011] The water filter seat is in an inverted cone structure, and a plurality of through holes are distributed circumferentially at different diameter length positions inside the water filter seat, and each of the through holes is vertically penetrated in the water filter seat. A porous filter mechanism is provided at the through holes at each diameter length position on the water filter seat, and the porous filter mechanism filters and purifies the groundwater below the water filter seat, so that the purified groundwater flows upward through the through holes; a water intake pipe is vertically connected above the purification tank, and the water intake pipe extracts the groundwater flowing in the upper layer of the purification tank for inspection;

[0012] The porous filter mechanism adaptively adjusts the water purification intensity of each water filter seat according to the pollution of groundwater at different depths, so that the water filter seats can coordinate with each other to grade and purify groundwater, avoiding excessive accumulation of impurities that affect the water purification efficiency.

[0013] Furthermore, preferably, a sewage pipe is connected to the bottom of the purification tank, and a flushing pipe is sealedly connected to the side wall of the purification tank above each water filter seat, a main pipe is arranged outside the purification tank, and the other end of each flushing pipe is connected to the main pipe.

[0014] Further, preferably, the stratified water sampling device comprises:

[0015] An outer protective tube, in which a plurality of branch tubes are vertically fixed, the upper ends of the branch tubes are arranged flush with the outer protective tube, and the lower ends of the branch tubes extend deep into different positions of the outer protective tube;

[0016] An inner flow channel is arranged in the water delivery pipe, the inner flow channel and the branch pipe are arranged one-to-one, and the lower end of the inner flow channel is sealed and connected with the upper end of the branch pipe;

[0017] A sealing seat, fixed at the upper end of the water delivery pipe, a diverter plate is provided on one side of the sealing seat, a plurality of diverter holes corresponding to the inner flow channel are opened in the diverter plate, and the diverter holes are connected with the inner flow channel through a cut-off channel provided in the sealing seat;

[0018] A cut-off ring is coaxially fixed in the outer protective tube. A plurality of the cut-off rings are distributed up and down in the outer protective tube and are located at the lower end of each branch tube. An L-shaped joint is fixed at the lower end of the branch tube. An annular cavity is provided in the cut-off ring. One end of the L-shaped joint is connected to the annular cavity. An inner hole is opened on the side wall of the cut-off ring, and an outer hole corresponding to the inner hole is provided on the outer protective tube.

[0019] Further, preferably, the outer protective tube is formed by splicing a plurality of tube sections, and each branch tube is detachably installed in the outer protective tube.

[0020] Furthermore, as a preference, a central axis is rotatably connected in the purification tank, the central axis seal is connected through the water filter seat, and spoiler blades are installed on the central axis below each of the water filter seats.

[0021] Further, preferably, the porous filter mechanism comprises:

[0022] An inner annular groove is provided on the outer wall of the lower end surface of the water filter seat;

[0023] A filter ring is slidably connected in the inner ring groove, two T-shaped slide bars are fixed on the filter ring, and a slide groove is provided on the side wall of the inner ring groove, and the T-shaped slide bar is slidably connected to the slide groove;

[0024] A built-in motor is fixed in the water filter seat, a gear is fixed to the output end of the built-in motor, and a tooth groove is provided on one of the T-shaped slide bars, and the built-in motor is connected to the T-shaped slide bar for transmission through the meshing action of the gear and the tooth groove;

[0025] Distributed network ports are arranged in a circle on the filter ring.

[0026] Furthermore, as a preference, the distributed mesh ports on the filter ring are set to a plurality of groups of different specifications according to the aperture, so that the through holes in the water filter seat use the corresponding distributed mesh ports to filter and purify the groundwater.

[0027] Further, as a preferred embodiment, a rotating seat is coaxially rotatably connected to the water filter seat, a scraper strip is obliquely fixed to the rotating seat, a shaft sleeve is centrally rotatably arranged in the purification tank, the shaft sleeve is slidably sleeved on the central axis, a motor drive unit is installed in the purification tank, and the output end of the motor drive unit is connected to the shaft sleeve through a transmission belt for transmission;

[0028] An upper machine base is fixed on the purification tank, a shaft disc is slidably connected to the lower part of the upper machine base through a spring, and one end of the central shaft is rotatably connected to the shaft disc through a bearing;

[0029] A clamping shaft is arranged on each rotating seat on the central axis, and a clamping slot is arranged in the rotating seat. The clamping shaft slides and extends into the clamping slot when the central axis moves downward.

[0030] Further, preferably, a pressure rod is symmetrically connected to the upper machine base for rotation, one end of the pressure rod is in contact with the shaft disk, and a cylinder is symmetrically connected to the upper machine base, and the telescopic end of the cylinder is connected to the other end of the pressure rod.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The stratified water sampling device provided in the present invention can independently extract groundwater at different depths, and the extracted groundwater can enter the purification tank and pass through each water filter seat in sequence from bottom to top, so that the groundwater is filtered and purified by the water filter seat, and the probability of clogging is small; wherein a plurality of porous filter mechanisms are provided concentrically below the water filter seat, and the water filter seat can adaptively adjust the water filtration and purification intensity of the water filter seat through the porous filter mechanism according to the suspended matter content and the distribution ratio of the suspended matter size in the groundwater at different depths, thereby avoiding the rapid accumulation of suspended matter and impurities in the water filter seat, resulting in failure of filtration and purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the water filtration and purification unit in the present invention;

[0036] Figure 4 It is a structural schematic diagram of the stratified water sampling device in the present invention;

[0037] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0038] Figure 6 It is a structural schematic diagram of the porous filter mechanism in the present invention;

[0039] Figure 7 It is a structural schematic diagram of the filter ring in the present invention;

[0040] Figure 8 It is a structural schematic diagram of the motor drive unit and the upper machine base in the present invention;

[0041] Fig. 9 It is a structural schematic diagram of the bayonet and the clamping shaft in the present invention;

[0042] In the figure: 1, purification tank; 11, water supply pipe; 12, delivery pipeline; 13, water pump; 14, flow control solenoid valve; 15, drainage pipe; 16, water intake pipe; 17, sewage pipe; 18, flushing pipe; 19, main pipe; 2, stratified water sampling device; 21, outer protective pipe; 22, branch pipe; 23, inner flow channel; 24, sealing seat; 25, diverter plate; 26, diverter hole; 27, intercepting ring; 28, ring cavity; 29, outer hole; 210, inner hole; 3 , water filtration and purification unit; 31, water filter seat; 32, through hole; 33, adapter tube; 34, filter screen plate; 4, porous filter screen mechanism; 41, filter ring; 42, T-shaped slide bar; 43, built-in motor; 44, inner ring groove; 5, middle shaft; 51, spoiler blade; 52, rotating seat; 53, scraper strip; 54, bushing; 55, motor drive unit; 56, bayonet; 57, clamping shaft; 6, upper machine base; 61, shaft disc; 62, pressure rod; 63, cylinder. DETAILED DESCRIPTION

[0043] See also Figure 1-Figure 9 In an embodiment of the present invention, a groundwater pollution depth stratification extraction and purification device based on ecological environment protection includes:

[0044] The water supply pipe 11 is vertically inserted into the ground borehole;

[0045] A stratified water sampling device 2 is coaxially installed below the water delivery pipe 11, and the lower end of the stratified water sampling device 2 is inserted into the groundwater to extract groundwater at different depths;

[0046] A plurality of delivery pipes 12 are arranged and distributed, one end of each delivery pipe 12 is connected to the water delivery pipe 11, and each stratified groundwater extracted from the stratified water sampling device 2 is transported separately through the water delivery pipe 11;

[0047] A flow control solenoid valve 14 is sealed and connected to the other end of the delivery pipeline 12. A drainage pipe 15 is horizontally connected to one side of the flow control solenoid valve 14. A water pump 13 is connected in series between the flow control solenoid valve 14 and the drainage pipe 15. The flow control solenoid valve 14 can control a delivery pipeline 12 to be connected to the drainage pipe 15, so that groundwater at a corresponding depth can be pumped outward.

[0048] The purification tank 1 has a water filtration and purification unit 3 disposed therein, and the water filtration and purification unit 3 pre-treats the extracted groundwater so as to remove suspended matter and other impurities in the groundwater;

[0049] The water filtration and purification unit 3 includes a water filter seat 31, which is a plurality of water filter seats distributed up and down. A filter screen plate 34 is sealed at the bottom of the purification tank 1, and a water accumulation cavity is formed between the filter screen plate 34 and the purification tank 1. A transfer tube 33 is connected to the middle of the filter screen plate 34, and the cross section of the transfer tube 33 is an inverted J-shaped structure. The purification tank 1 is connected to the drain pipe 15 through the transfer tube 33, so that the groundwater transported in the drain pipe 15 enters the water accumulation cavity through the transfer tube 33; so that larger suspended matter such as leaves and branches in the groundwater can be quickly removed through the filter screen plate 34;

[0050] The water filter seat 31 is an inverted cone structure, and a plurality of through holes 32 are distributed circumferentially at different diameter positions inside the water filter seat 31, and each of the through holes 32 is vertically penetrated in the water filter seat 31. A porous filter mechanism 4 is provided at the through holes 32 at each diameter position on the water filter seat 31, and the porous filter mechanism 4 filters and purifies the groundwater below the water filter seat 31, so that the purified groundwater flows upward through the through holes 32; a water intake pipe 16 is vertically connected to the top of the purification tank 1, and the water intake pipe 16 extracts and sends the groundwater flowing in the upper layer of the purification tank 1 for inspection; that is, the groundwater can gradually flow and accumulate in the purification tank 1 and pass through each water filter seat 31 in turn, so that the filtered and purified groundwater is extracted by the water intake pipe 16; compared with the general filter mechanism, the water filter seat 31 of the present invention is not easily affected by suspended matter and is blocked, and is convenient for self-cleaning and maintenance;

[0051] The porous filter mechanism 4 adaptively adjusts the water purification intensity of each water filter seat 31 according to the pollution of groundwater at different depths, so that the water filter seats 31 can coordinate with each other to grade and purify groundwater, avoiding excessive accumulation of impurities that affect the water purification efficiency.

[0052] In this embodiment, a sewage pipe 17 is connected to the bottom of the purification tank 1, and a flushing pipe 18 is sealed and connected to one side of the side wall of the purification tank 1 above each water filter seat 31. A main pipe 19 is provided outside the purification tank 1, and the other end of each flushing pipe 18 is connected to the main pipe 19. The main pipe 19 can transport flushing water to the purification tank 1 through the flushing pipe 18, thereby facilitating the flushing and cleaning of each water filter seat 31.

[0053] As a preferred embodiment, the stratified water sampling device 2 comprises:

[0054] The outer protective tube 21 has a plurality of branch tubes 22 vertically fixed therein, the upper ends of the branch tubes 22 are all arranged flush with the outer protective tube 21, and the lower ends of the branch tubes 22 extend deep into different positions of the outer protective tube 21;

[0055] An inner flow channel 23 is provided in the water delivery pipe 11, the inner flow channel 23 and the branch pipe 22 are provided in one-to-one correspondence, and the lower end of the inner flow channel 23 is sealed and connected with the upper end of the branch pipe 22;

[0056] A sealing seat 24 is fixed to the upper end of the water delivery pipe 11. A diverter plate 25 is provided on one side of the sealing seat 24. A plurality of diverter holes 26 corresponding to the inner flow channel 23 are provided in the diverter plate 25. The diverter holes 26 are connected to the inner flow channel 23 through a cut-off channel provided in the sealing seat 24.

[0057] A cut-off ring 27 is coaxially fixed in the outer protective tube 21. Multiple cut-off rings 27 are distributed up and down in the outer protective tube 21 and are located at the lower end of each branch tube 22. An L-shaped joint is fixed at the lower end of the branch tube 22. An annular cavity 28 is provided in the cut-off ring 27. One end of the L-shaped joint is connected to the annular cavity 28. An inner hole 210 is opened on the side wall of the cut-off ring 27, and an outer hole 29 corresponding to the inner hole 210 is provided on the outer protective tube 21.

[0058] In this embodiment, the outer protective pipe 21 is composed of a plurality of joint pipes, and each branch pipe 22 is detachably installed in the outer protective pipe 21, so as to flexibly extract groundwater at different depths.

[0059] In this embodiment, a central axis 5 is rotatably connected in the purification tank 1, and the central axis 5 is sealed and connected to the water filter seat 31, and a spoiler blade 51 is installed on the central axis 5 below each of the water filter seats 31, so that the groundwater in the purification tank 1 can be stirred and pre-treated, so that large particles of impurities can be centrifugally distributed below the water filter seat 31, and then filtered by the corresponding porous filter mechanism 4.

[0060] In this embodiment, the porous filter mechanism 4 includes:

[0061] The inner annular groove 44 is formed on the outer wall of the lower end surface of the water filter seat 31;

[0062] The filter ring 41 is slidably connected in the inner ring groove 44. Two T-shaped slide bars 42 are fixed on the filter ring 41. A slide groove is provided on the side wall of the inner ring groove 44. The T-shaped slide bars 42 are slidably connected to the slide groove.

[0063] A built-in motor 43 is fixed in the water filter seat 31. A gear is fixed to the output end of the built-in motor 43. A tooth groove is provided on one of the T-shaped slide bars 42. The built-in motor 43 is connected to the T-shaped slide bar 42 for transmission through the meshing action of the gear and the tooth groove.

[0064] The distributed network ports are arranged in a circle on the filter ring 41 .

[0065] As a preferred embodiment, the distributed mesh ports on the filter ring 41 are set to multiple groups of different specifications according to the aperture, so that the through holes 32 in the water filter seat 31 use corresponding distributed mesh ports to filter and purify groundwater; that is, for the extraction and purification of groundwater at different depths, the filter rings 41 above and below each filter water are rotated and adjusted according to the distribution ratio of the size of suspended matter in the groundwater; at this time, after the groundwater is pre-treated by stirring with the spoiler blades 51, each water filter seat 31 filters and purifies suspended matter of various sizes through the filter ring 41, so that the suspended matter in the groundwater is relatively evenly distributed below each water filter seat 31, avoiding excessive accumulation of suspended matter in a certain water filter seat 31; and it should be noted that the aperture of the distributed mesh ports close to the center of the circle in the water filter seat 31 is not larger than the aperture of the distributed mesh ports far from the center of the circle; at the same time, each distributed mesh port in the water filter seat 31 located above is smaller than each distributed mesh port in the water filter seat 31 located below.

[0066] In this embodiment, a rotating seat 52 is coaxially rotatably connected to the water filter seat 31, a scraper strip 53 is obliquely fixed to the rotating seat 52, a shaft sleeve 54 is centrally rotatably arranged in the purification tank 1, the shaft sleeve 54 is slidably sleeved on the central axis 5, a motor drive unit 55 is installed in the purification tank 1, and the output end of the motor drive unit 55 is connected to the shaft sleeve 54 through a transmission belt for transmission;

[0067] An upper machine base 6 is fixed on the purification tank 1, and a shaft disc 61 is slidably connected to the lower part of the upper machine base 6 through a spring, and one end of the central axis 5 is rotatably connected to the shaft disc 61 through a bearing;

[0068] A clamping shaft 57 is provided on the central axis 5 at each rotating seat 52, and a bayonet 56 is provided in the rotating seat 52. The clamping shaft 57 slides into the bayonet 56 when the central axis 5 moves downward, so that each rotating seat 52 can be driven to rotate when the central axis 5 rotates, so that the scraper strip 53 on the rotating seat can self-clean the surface of the water filter seat 31.

[0069] In this embodiment, the upper machine base 6 is symmetrically connected to a pressure rod 62 for rotation. One end of the pressure rod 62 is in contact with the shaft disc 61, and the upper machine base 6 is symmetrically connected to a cylinder 63. The telescopic end of the cylinder 63 is connected to the other end of the pressure rod 62. That is, when the shaft disc 61 is pressed downward by the pressure shaft, the middle shaft 5 slides downward so that the clamping shaft 57 slides into the bayonet 56; and when the shaft disc 61 slides upward and resets under the elastic force of the spring, the middle shaft 5 slides upward and the clamping shaft 57 slides out of the bayonet 56, thereby controlling the scraper strip 53 on the rotating seat 52 to clean or stop working.

[0070] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Groundwater pollution deep layered extraction and purification equipment based on ecological environment protection, characterized by: It includes: A water supply pipe (11) is vertically inserted into a hole drilled in the ground; A stratified water sampling device (2) is coaxially installed below the water delivery pipe (11), and the lower end of the stratified water sampling device (2) is inserted into the groundwater to extract groundwater at different depths; The delivery pipelines (12) are arranged in a plurality of distributed arrangements, one end of the delivery pipeline (12) is connected to the water delivery pipe (11), and the groundwater of each layer extracted from the stratified water sampling device (2) is respectively delivered through the water delivery pipe (11); A flow control solenoid valve (14) is sealed and connected to the other end of the delivery pipe (12); a drainage pipe (15) is horizontally connected to one side of the flow control solenoid valve (14); and a water pump (13) is connected in series between the flow control solenoid valve (14) and the drainage pipe (15); A purification tank (1) is provided with a water filtration and purification unit (3) inside, and the water filtration and purification unit (3) pre-treats the extracted groundwater so as to remove suspended matter and other impurities in the groundwater; The water filtration and purification unit (3) comprises a water filtration seat (31), wherein the water filtration seats (31) are arranged in a plurality of upper and lower portions. A filter screen plate (34) is provided at the bottom of the purification tank (1) in a sealed manner, and a water accumulation cavity is formed between the bottom of the filter screen plate (34) and the purification tank (1). A transfer pipe (33) is connected to the middle of the filter screen plate (34), and the cross section of the transfer pipe (33) is in an inverted J-shaped structure. The purification tank (1) is connected to the drainage pipe (15) via the transfer pipe (33), so that groundwater transported in the drainage pipe (15) enters the water accumulation cavity via the transfer pipe (33); The water filter seat (31) is in an inverted cone-shaped structure, and has a plurality of through holes (32) distributed circumferentially at different radial length positions inside the water filter seat (31). Each through hole (32) is vertically arranged in the water filter seat (31). A porous filter mechanism (4) is arranged at the through holes (32) at each radial length position on the water filter seat (31). The porous filter mechanism (4) filters and purifies groundwater below the water filter seat (31), so that the purified groundwater flows upward through the through holes (32). A water intake pipe (16) is vertically connected above the purification tank (1), and the water intake pipe (16) extracts and sends for inspection the groundwater flowing in the upper layer of the purification tank (1). The porous filter mechanism (4) adaptively adjusts the water filtration and purification intensity of each water filter seat (31) according to the pollution conditions of groundwater at different depths, so that the water filter seats (31) can coordinate with each other to grade and purify groundwater, thereby avoiding excessive accumulation of impurities that affect the water filtration and purification efficiency.

2. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 1 is characterized by: The bottom of the purification tank (1) is connected to a sewage discharge pipe (17), and a flushing pipe (18) is sealedly connected to a side wall of the purification tank (1) located above each water filter seat (31). A main pipe (19) is provided outside the purification tank (1), and the other end of each flushing pipe (18) is connected to the main pipe (19).

3. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 1 is characterized by: The stratified water sampling device (2) comprises: An outer protective tube (21) having a plurality of branch tubes (22) vertically fixed therein, wherein the upper ends of the branch tubes (22) are all arranged flush with the outer protective tube (21), and the lower ends of the branch tubes (22) extend deep into different positions of the outer protective tube (21); An inner flow channel (23) is arranged in the water delivery pipe (11), the inner flow channel (23) and the branch pipe (22) are arranged in a one-to-one correspondence, and the lower end of the inner flow channel (23) is sealed and connected to the upper end of the branch pipe (22); A sealing seat (24) is fixed to the upper end of the water supply pipe (11), a diverter plate (25) is provided on one side of the sealing seat (24), a plurality of diverter holes (26) corresponding to the inner flow channel (23) are provided in the diverter plate (25), and the diverter holes (26) are connected to the inner flow channel (23) through a cut-off channel provided in the sealing seat (24); A cut-off ring (27) is coaxially fixed in the outer protective tube (21). A plurality of cut-off rings (27) are distributed vertically in the outer protective tube (21) and are located at the lower end of each branch tube (22). An L-shaped joint is fixed at the lower end of the branch tube (22). An annular cavity (28) is provided in the cut-off ring (27). One end of the L-shaped joint is connected to the annular cavity (28). An inner hole (210) is provided on the side wall of the cut-off ring (27), and an outer hole (29) corresponding to the inner hole (210) is provided on the outer protective tube (21).

4. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 3 is characterized by: The outer protective tube (21) is formed by splicing a plurality of tube sections, and each branch tube (22) is detachably installed in the outer protective tube (21).

5. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 1 is characterized by: A central shaft (5) is rotatably connected in the purification tank (1), the central shaft (5) is sealingly connected through the water filter seat (31), and a spoiler blade (51) is installed on the central shaft (5) below each water filter seat (31).

6. The groundwater pollution deep layered extraction and purification equipment based on ecological environment protection according to claim 5 is characterized by: The porous filter mechanism (4) comprises: An inner annular groove (44) is formed on the outer wall of the lower end surface of the water filter seat (31); A filter ring (41) is slidably connected in the inner ring groove (44), two T-shaped slide bars (42) are fixed on the filter ring (41), and a slide groove is provided on the side wall of the inner ring groove (44), and the T-shaped slide bar (42) is slidably connected to the slide groove; A built-in motor (43) is fixed in the water filter seat (31); a gear is fixed to the output end of the built-in motor (43); and a tooth groove is provided on one of the T-shaped slide bars (42); the built-in motor (43) is connected to the T-shaped slide bar (42) for transmission through the meshing action of the gear and the tooth groove; The distributed network ports are arranged in a circle on the filter ring (41).

7. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 6 is characterized by: The distributed mesh ports on the filter ring (41) are set to a plurality of groups of different specifications according to the aperture, so that the through holes (32) in the water filter seat (31) use the corresponding distributed mesh ports to filter and purify the groundwater.

8. The groundwater pollution deep layered extraction and purification equipment based on ecological environment protection according to claim 6 is characterized by: A rotating seat (52) is coaxially rotatably connected to the water filter seat (31), a scraper strip (53) is obliquely fixed to the rotating seat (52), a shaft sleeve (54) is centrally rotatably arranged in the purification tank (1), the shaft sleeve (54) is slidably sleeved on the central shaft (5), a motor drive unit (55) is installed in the purification tank (1), and an output end of the motor drive unit (55) is connected to the shaft sleeve (54) through a transmission belt for transmission; An upper machine base (6) is fixed on the purification tank (1), a shaft disc (61) is slidably connected to the lower part of the upper machine base (6) via a spring, and one end of the middle shaft (5) is rotatably connected to the shaft disc (61) via a bearing; A clamping shaft (57) is provided on each rotating seat (52) on the central shaft (5), a clamping hole (56) is provided in the rotating seat (52), and the clamping shaft (57) slides and extends into the clamping hole (56) when the central shaft (5) moves downward.

9. The groundwater pollution depth stratification extraction and purification equipment based on ecological environment protection according to claim 8 is characterized by: A pressure rod (62) is symmetrically rotatably connected to the upper machine base (6), one end of the pressure rod (62) is in contact with the shaft disc (61), and a cylinder (63) is symmetrically connected to the upper machine base (6), and the telescopic end of the cylinder (63) is connected to the other end of the pressure rod (62).

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