Underground water extraction device for layered extraction environmental engineering

Abstract

The invention discloses an underground water extraction device for layered extraction environmental engineering, and relates to the technical field of environmental engineering, the underground water extraction device for layered extraction environmental engineering comprises a machine body, and also comprises a support device, an adjusting device and an extraction device; wherein the bottom of the machine body is fixedly connected with a telescopic rod, the supporting device comprises a rotating rod, a supporting plate, a first cylinder, a connecting frame, a handle, a sliding column and a supporting frame, the supporting plate is fixedly connected to the left side of the machine body, the rotating rod is rotatably connected to the bottom of the supporting plate, and the bottom of the chain is fixedly connected to the left side of the rotating rod; the connecting frame is fixedly connected to the other end of the chain; according to the underground water extraction device for layered extraction environmental engineering, when the rotating rod rotates, the rotating rod can drive the supporting frame to rotate, when the supporting frame rotates, the supporting frame can play a supporting role, and when the supporting frame is supported on the ground, the extraction device can conduct stable operation.

Description

Technical Field

[0001] The invention relates to the technical field of environmental engineering, in particular to a groundwater extraction device for layered extraction environmental engineering. Background Art

[0002] With the rapid development of urbanization, urban sewer systems are facing increasing pressure. A large amount of sewage and rainwater mix and flow into the sewers, resulting in complex and changeable water quality, which brings challenges to environmental protection and water resources management.

[0003] Patent publication number CN216160238U relates to the field of environmental engineering technology, specifically a groundwater extraction device for stratified extraction. The device comprises a protective casing and a holding bucket mounted at its bottom. The protective casing comprises an upper casing, the lower end of which is telescopically connected to a lower casing. The inner end of the lower casing is telescopically connected to an inner rod. The inner rod is provided with a retaining post at its bottom end, and is externally threaded. The holding bucket has an upper cavity at its upper end and a lower cavity at its lower end. The retaining post is positioned between the two cavities, and the lower cavity is provided with several side holes. The patent discloses a holding bucket that is immersed in sewage from the upper part of the sewer. The side holes in the upper cavity collect sewage from the top of the sewer. When the holding bucket is inserted into the bottom end, the inner rod is rotated, driving the retaining post upward. The side holes are unblocked, allowing water to flow through the side holes into the lower cavity, completing the extraction of sewer water quality at different locations, thereby improving the accuracy of subsequent testing.

[0004] In the above patent, water flows along the side holes into the lower cavity to complete the extraction of sewer water quality at different positions, so as to improve the accuracy of subsequent detection. However, during the extraction, the support may be unstable and the extraction device may be accidentally touched when not in use, causing damage to the extraction device. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a groundwater extraction device for layered extraction environmental engineering, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A groundwater extraction device for layered extraction environmental engineering, comprising a body, a supporting device, an adjusting device and an extraction device, wherein a telescopic rod is fixedly connected to the bottom of the body, and the supporting device comprises a rotating rod, a support plate, a cylinder 1, a connecting frame, a handle, a sliding column and a supporting frame, wherein the support plate is fixedly connected to the left side of the body, the rotating rod is rotatably connected to the bottom of the support plate, the bottom of the chain is rotatably connected to the left side of the rotating rod, the connecting frame is fixedly connected to the top of the chain, the cylinder 1 is fixedly connected to the top of the support plate, the chain is slidably connected to the inside of the cylinder 1, the sliding column is slidably connected to the inside of the rotating rod, the support frame is fixedly connected to the bottom of the sliding column, and the handle is fixedly connected to the top of the connecting frame.

[0007] According to the above technical solution, the bottom of the connecting frame contacts the top of the cylinder 1, and the left side of the rotating rod contacts the bottom of the supporting plate.

[0008] According to the above technical solution, a long groove is provided on the circumferential surface of the telescopic rod, a blocking rod is fixedly connected to the right side of the rotating rod, and the right side of the blocking rod is in contact with the long groove.

[0009] According to the above technical solution, the adjusting device includes a pressing plate, a connecting rod 1, a cylinder 2, a sliding rod, a push block, a push plate and a hollow warehouse. The hollow warehouse is fixedly connected to the top of the machine body, the pressing plate is slidably connected to the top of the hollow warehouse, the connecting rod 1 is fixedly connected to the bottom wall inside the hollow warehouse, the cylinder 2 is fixedly connected to the right side of the hollow warehouse, the sliding rod is slidably connected to the inside of the cylinder 2, the push block is fixedly connected to the right side of the sliding rod, and the push plate is fixedly connected to the left side of the support frame.

[0010] According to the above technical solution, the adjusting device also includes a connecting frame, a support column, a scraper and a second connecting rod. The connecting frame is fixedly connected to the bottom of the rotating rod, the support column is rotatably connected to the right side of the connecting frame, one end of the second connecting rod is rotatably connected to the bottom of the support column, and the scraper is fixedly connected to the other end of the second connecting rod.

[0011] According to the above technical solution, the push block contacts the push plate, and the inner ring of the scraper contacts the circumferential surface of the free end of the telescopic rod.

[0012] According to the above technical solution, the extraction device includes a protective cover, a protective plate, a bottom plate, a triangular oblique block, a shrinkage cover, an upper circular plate, a lower circular plate, a collecting tube and a telescopic cover. The protective cover is fixedly connected to the bottom of the scraper, the protective plate is rotatably connected to the bottom of the protective cover, the bottom plate is fixedly connected to the bottom of the telescopic rod, the top of the shrinkage cover is fixedly connected to the bottom of the bottom plate, the upper circular plate is fixedly connected to the bottom of the shrinkage cover, the top of the telescopic cover is fixedly connected to the bottom of the upper circular plate, the top of the collecting tube is fixedly connected to the bottom of the bottom plate, the lower circular plate is fixedly connected to the bottom of the telescopic cover, the triangular oblique block is fixedly connected to the top of the bottom plate, and the lower circular plate is rotatably connected to the top of the collecting tube.

[0013] According to the above technical solution, a one-way valve is provided at the bottom of the upper circular plate, circular holes are provided on the upper and lower surfaces of the lower circular plate, four collection ports are provided at the top of the collecting cylinder, a threaded groove is provided on the circumferential surface of the collecting cylinder, and the collecting cylinder is threadedly connected to the upper circular plate.

[0014] The present invention provides a groundwater extraction device for layered extraction environmental engineering. It has the following beneficial effects: (1) In this invention, by pulling the handle upward, the handle can drive the connecting frame to move upward. When the connecting frame moves upward, the connecting frame will drive the chain to move upward. When the chain moves upward, the chain will drive the rotating rod to rotate. When the rotating rod rotates, the rotating rod will drive the supporting frame to rotate. When the supporting frame rotates, the supporting frame can play a supporting role. When the supporting frame is supported on the ground, the extraction device can operate stably. When the handle is not pulled, the blocking rod will be inserted into the long slot. When the blocking rod is inserted into the long slot, the blocking rod will block the telescopic rod, which can effectively prevent the worker from accidentally touching the operation and causing the telescopic rod to extend.

[0015] (2) In this invention, when the push block moves in the direction away from the hollow chamber, the push block will drive the push plate to move in the direction away from the hollow chamber. When the push plate moves in the direction away from the hollow chamber, the push plate will drive the support frame to move in the direction away from the hollow chamber. At this time, the sliding column is extended to adjust the telescopic distance. At this time, the support frame can adapt to different sewer sizes to ensure that the extraction device is suitable for different scenarios. When the rotating rod rotates, the rotating rod will drive the support column to rotate. When the support column rotates, the support column will cause the scraper to move up and down. When the scraper moves up and down, the scraper can scrape off impurities and moisture adhering to the surface of the free end of the telescopic rod, which can effectively prevent impurities and moisture from entering the fixed end of the telescopic rod, causing the lubricating oil in the telescopic rod to be diluted, and prevent the telescopic rod from getting stuck.

[0016] (3) In this invention, when the scraper moves upward, it will drive the protective cover and the protective plate to move upward. When the protective plate and the protective cover move upward, the extraction device will leak. When the device is not in use, the protective cover and the protective plate can protect the extraction device from being damaged by bumps. As the telescopic rod is extended, the extraction device will come into contact with the water in the sewer. When the telescopic rod continues to extend, the water will completely cover the extraction device. The pressure in the water will drive the upper circular plate to move upward. When the upper circular plate moves upward, the upper circular plate will drive the collection tube to rotate. When the collection tube rotates, the collection port on the top of the collection tube will coincide with the circular hole of the lower circular plate. At this time, water can be collected. As the telescopic rod is extended, the water pressure will continue to increase. The upper circular plate will continue to rise. At this time, the collection tube will continue to rotate. The collection tube can collect water at different depths, which can be better studied. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure of the middle A part; Figure 3 This is a schematic diagram of the position structure of the support device and the adjustment device of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure of part B in the middle; Figure 5 This is a schematic diagram of the position structure of the extraction device of the present invention; Figure 6 This is a schematic cross-sectional view of the position structure of the extraction device of the present invention; Figure 7 This is a schematic diagram of the position structure of the shrink cover and the collecting tube of the present invention; Figure 8 This is a schematic diagram of the position structure of the one-way valve and the telescopic cover of the present invention.

[0018] In the figure: 1. body; 2. telescopic rod; 31. rotating rod; 32. chain; 33. support plate; 34. cylinder 1; 35. connecting frame; 36. handle; 37. slide column; 38. support frame; 39. stop rod; 310. long groove; 41. pressing plate; 42. connecting rod 1; 43. cylinder 2; 44. slide rod; 45. push block; 46. push plate; 47. connecting frame; 48. support column; 49. scraper; 410. connecting rod 2; 411. hollow bin; 51. protective cover; 52. protective plate; 53. bottom plate; 54. triangular oblique block; 55. retractable cover; 56. upper circular plate; 57. lower circular plate; 58. collecting cylinder; 59. one-way valve; 510. telescopic cover. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1-8 One embodiment of the present invention is: a groundwater extraction device for layered extraction environmental engineering, including a body 1, and a support device, wherein the bottom of the body 1 is fixedly connected to a telescopic rod 2, the support device includes a rotating rod 31, a support plate 33, a cylinder 34, a connecting frame 35, a handle 36, a sliding column 37 and a support frame 38, the support plate 33 is fixedly connected to the left side of the body 1, the rotating rod 31 is rotatably connected to the bottom of the support plate 33, the bottom of the chain 32 is rotatably connected to the left side of the rotating rod 31, the connecting frame 35 is fixedly connected to the top of the chain 32, the cylinder 34 is fixedly connected to the top of the support plate 33, and the chain 32 is slidably connected to the cylinder 38. 34, the sliding column 37 is slidably connected to the inside of the rotating rod 31, the support frame 38 is fixedly connected to the bottom of the sliding column 37, and the handle 36 is fixedly connected to the top of the connecting frame 35. When the rotating rod 31 rotates, the rotating rod 31 will drive the support frame 38 to rotate. When the support frame 38 rotates, the support frame 38 can play a supporting role. When the support frame 38 is supported on the ground, the extraction device can be operated stably. When the handle 36 is not pulled, the blocking rod 39 will be inserted into the long slot 310. When the blocking rod 39 is inserted into the long slot 310, the blocking rod 39 will block the telescopic rod 2, which can effectively prevent the worker from accidentally touching the operation and causing the telescopic rod 2 to extend.

[0021] The bottom of the connecting frame 35 contacts the top of the cylinder 1 34 , and the left side of the rotating rod 31 contacts the bottom of the supporting plate 33 , which is used to support the rotating rod 31 .

[0022] A long groove 310 is formed on the circumferential surface of the telescopic rod 2. A blocking rod 39 is fixedly connected to the right side of the rotating rod 31. The right side of the blocking rod 39 contacts the long groove 310. The blocking rod 39 can prevent the telescopic rod 2 from extending.

[0023] When this embodiment is working, by pulling the handle 36 upward, the handle 36 will be lifted upward, and when the handle 36 moves upward, the handle 36 will drive the connecting frame 35 to move upward, and when the connecting frame 35 moves upward, the connecting frame 35 will drive the chain 32 to move upward, and when the chain 32 moves upward, the chain 32 will slide in the cylinder 1 34, and when the chain 32 slides in the cylinder 1 34, the chain 32 will drive the rotating rod 31 to rotate, and when the rotating rod 31 rotates, the rotating rod 31 will drive the sliding post 37 to rotate, and when the sliding post 37 rotates, the sliding post 37 will drive the supporting frame 38 to rotate, and when the rotating rod 31 rotates, the rotating rod 31 will contact the supporting plate 33, and when the rotating rod 31 contacts the supporting plate 33, the supporting plate 33 will be supported by the supporting plate 33, and when the support plate 33 is supported by the support plate 33, the rotating rod 31 will not continue to rotate. When the handle 36 is not pulled, the blocking rod 39 is inserted into the long slot 310, and the blocking rod 39 plays a fixing role. When the blocking rod 39 plays a fixing role, the telescopic rod 2 is fixed. When the telescopic rod 2 is fixed, it can prevent the telescopic rod 2 from being extended by accidental touch. When the rotating rod 31 rotates, the rotating rod 31 drives the blocking rod 39 to rotate. When the blocking rod 39 rotates, the blocking rod 39 will be out of contact with the long slot 310. When the blocking rod 39 is out of contact with the long slot 310, the blocking rod 39 will release the limit on the telescopic rod 2. The telescopic rod 2 will be extended and retracted when the blocking rod 39 releases the limit on the telescopic rod 2.

[0024] See also Figures 1-8 On the basis of the above embodiment, another embodiment of the present invention further includes an adjusting device and an extraction device, the adjusting device includes a pressing plate 41, a connecting rod 1 42, a cylinder 2 43, a sliding rod 44, a pushing block 45, a pushing plate 46 and a hollow bin 411, the hollow bin 411 is fixedly connected to the top of the body 1, the pressing plate 41 is slidably connected to the top of the hollow bin 411, the connecting rod 1 42 is fixedly connected to the bottom wall inside the hollow bin 411, the cylinder 2 43 is fixedly connected to the right side of the hollow bin 411, the sliding rod 44 is slidably connected inside the cylinder 2 43, the pushing block 45 is fixedly connected to the right side of the sliding rod 44, and the pushing plate 46 is fixedly connected to the left side of the support frame 38. When the pushing plate 46 moves in the direction away from the hollow bin 411, the pushing plate 46 will drive the support frame 38 to move in the direction away from the hollow bin 411. At this time, the sliding column 37 is extended to adjust the telescopic distance. At this time, the support frame 38 can adapt to different sewer sizes to ensure that the extraction device is suitable for different scenarios.

[0025] The adjusting device also includes a connecting frame 47, a support column 48, a scraper 49 and a second connecting rod 410. The connecting frame 47 is fixedly connected to the bottom of the rotating rod 31, the support column 48 is rotatably connected to the right side of the connecting frame 47, one end of the second connecting rod 410 is rotatably connected to the bottom of the support column 48, and the scraper 49 is fixedly connected to the other end of the second connecting rod 410. When the scraper 49 moves up and down, the scraper 49 can scrape off impurities and moisture adhering to the surface of the free end of the telescopic rod 2, which can effectively prevent impurities and moisture from entering the fixed end of the telescopic rod 2, causing the dilution of the lubricating oil in the telescopic rod 2, and prevent the telescopic rod 2 from getting stuck.

[0026] The push block 45 contacts the push plate 46, and the inner ring of the scraper 49 contacts the circumferential surface of the free end of the telescopic rod 2. When the telescopic rod 2 is retracted, the scraper 49 will clean it.

[0027] The extraction device includes a protective cover 51, a protective plate 52, a bottom plate 53, a triangular oblique block 54, a shrinking cover 55, an upper circular plate 56, a lower circular plate 57, a collecting cylinder 58 and a telescopic cover 510. The protective cover 51 is fixedly connected to the bottom of the scraper 49, the protective plate 52 is rotatably connected to the bottom of the protective cover 51, the bottom plate 53 is fixedly connected to the bottom of the telescopic rod 2, the top of the shrinking cover 55 is fixedly connected to the bottom of the bottom plate 53, the upper circular plate 56 is fixedly connected to the bottom of the shrinking cover 55, the top of the telescopic cover 510 is fixedly connected to the bottom of the upper circular plate 56, the top of the collecting cylinder 58 is fixedly connected to the bottom of the bottom plate 53, and the lower circular plate 57 is fixedly connected to the telescopic cover 51. 0, the triangular oblique block 54 is fixedly connected to the top of the bottom plate 53, and the lower circular plate 57 is rotatably connected to the top of the collecting cylinder 58. When the scraper 49 moves upward, the scraper 49 will drive the protective cover 51 and the protective plate 52 to move upward. When the protective plate 52 and the protective cover 51 move upward, the extraction device will leak. When the device is not in use, the protective cover 51 and the protective plate 52 can protect the extraction device from being damaged by bumps. As the telescopic rod 2 extends, the water pressure will continue to increase, and the upper circular plate 56 will continue to rise. At this time, the collecting cylinder 58 will continue to rotate, and the collecting cylinder 58 can collect water at different depths, which can be better studied.

[0028] A one-way valve 59 is provided at the bottom of the upper circular plate 56, circular holes are provided on the upper and lower surfaces of the lower circular plate 57, four collecting ports are provided at the top of the collecting tube 58, and a threaded groove is provided on the circumferential surface of the collecting tube 58. The collecting tube 58 is threadedly connected to the upper circular plate 56. The one-way valve 59 can only discharge gas from the inside of the shrinking cover 55, and external water cannot enter the shrinking cover 55.

[0029] When this embodiment is working: when the rotating rod 31 is in a horizontal state, the pressing plate 41 can be pressed downward. When the pressing plate 41 is pressed downward, the gas in the hollow chamber 411 will be compressed. When the gas in the hollow chamber 411 is compressed, the gas in the hollow chamber 411 will enter the cylinder 2 43. When the gas enters the cylinder 2 43, the gas will push the sliding rod 44 to move in the direction away from the hollow chamber 411. When the sliding rod 44 moves in the direction away from the hollow chamber 411, the sliding rod 44 will drive the pushing block 45 to move in the direction away from the hollow chamber 411. When the pushing block 45 moves in the direction away from the hollow chamber 411, the pushing block 45 will contact the pushing plate 46. When the pushing block 45 contacts the pushing plate 46, the pushing plate 46 will be pushed by the pushing block 45 in the direction away from the hollow chamber 411. When the pushing plate 46 When the push plate 46 moves in the direction away from the hollow bin 411, the push plate 46 will drive the support frame 38 to move in the direction away from the hollow bin 411. When the support frame 38 moves in the direction away from the hollow bin 411, the support frame 38 will drive the sliding column 37 to extend. When the support frame 38 moves in the direction away from the hollow bin 411, the support frame 38 will adapt to sewer pipes of different sizes. When the extraction work is completed, the handle 36 can be pressed downward. When the handle 36 is pressed downward, the handle 36 will drive the rotating rod 31 to rotate, and the rotating rod 31 will drive the support column 48 to rotate. When the support column 48 rotates, the support column 48 will drive the connecting rod 2 410 to move downward. The connecting rod 2 410 will drive the scraper 49 to move downward. When the scraper 49 moves downward, the free end of the telescopic rod 2 can be cleaned.

[0030] When the support column 48 rotates, the support column 48 will drive the connecting rod 2 410 to move upward, and when the connecting rod 2 410 moves upward, the connecting rod 2 410 will drive the scraper 49 to move upward, and when the scraper 49 moves upward, the scraper 49 will drive the protective cover 51 to move upward, and when the protective cover 51 moves upward, the protective plate 52 of the protective cover 51 moves upward, and when the protective plate 52 moves upward, the protective plate 52 will contact the collecting tube 58, and when the protective plate 52 contacts the collecting tube 58, the protective plate 52 will rotate, and when the protective cover 51 moves upward, the extraction device will leak, and when the extraction device is placed underwater, the water pressure will push the upper circular plate 56 upward, and when the upper circular plate 56 moves upward, the upper circular plate 56 will squeeze the shrinkage cover 55, and when the shrinkage cover 55 is squeezed, the gas in the shrinkage cover 55 will be discharged through the one-way valve 59, and the one-way valve 59 only It can discharge gas. When the upper circular plate 56 moves upward, the upper circular plate 56 will drive the telescopic cover 510 to extend, and the upper circular plate 56 is threadedly connected to the collecting tube 58. When the upper circular plate 56 moves upward, the upper circular plate 56 will drive the collecting tube 58 to rotate. When the collecting tube 58 rotates, the collecting port at the top of the collecting tube 58 will coincide with the circular hole on the surface of the lower circular plate 57. When the collecting port coincides with the circular hole on the surface of the lower circular plate 57, the water in the sewer will enter the collecting port. As the telescopic rod 2 moves downward, the pressure of the water in the sewer will become greater and greater. When the pressure becomes greater, the upper circular plate 56 will continue to move upward. When the upper circular plate 56 moves upward, the collecting tube 58 will continue to rotate, so that the extraction device can take sewer samples at different depths. When the extraction is completed, the protective plate 52 moves downward and contacts the triangular oblique block 54. The triangular oblique block 54 can prevent the protective plate 52 from getting stuck.

[0031] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A groundwater extraction device for layered extraction environmental engineering, comprising a body (1), characterized in that: It also includes a supporting device, an adjusting device and an extracting device; The bottom of the body (1) is fixedly connected to a telescopic rod (2), and the supporting device comprises a rotating rod (31), a chain (32), a supporting plate (33), a cylinder (34), a connecting frame (35), a handle (36), a sliding column (37) and a supporting frame (38), wherein the supporting plate (33) is fixedly connected to the left side of the body (1), the rotating rod (31) is rotatably connected to the bottom of the supporting plate (33), the bottom of the chain (32) is rotatably connected to the left side of the rotating rod (31), the connecting frame (35) is fixedly connected to the top of the chain (32), the cylinder (34) is fixedly connected to the top of the support plate (33), the chain (32) is slidably connected to the inside of the cylinder (34), the sliding column (37) is slidably connected to the inside of the rotating rod (31), the supporting frame (38) is fixedly connected to the bottom of the sliding column (37), and the handle (36) is fixedly connected to the top of the connecting frame (35).

2. The groundwater extraction device for layered extraction environmental engineering according to claim 1, characterized in that: The bottom of the connecting frame (35) contacts the top of the cylinder (34), and the left side of the rotating rod (31) contacts the bottom of the supporting plate (33).

3. The groundwater extraction device for layered extraction environmental engineering according to claim 2, characterized in that: A long groove (310) is formed on the circumferential surface of the telescopic rod (2), and a blocking rod (39) is fixedly connected to the right side of the rotating rod (31), with the right side of the blocking rod (39) in contact with the long groove (310).

4. The groundwater extraction device for layered extraction environmental engineering according to claim 3, characterized in that: The regulating device comprises a pressing plate (41), a connecting rod (42), a cylinder (43), a sliding rod (44), a push block (45), a push plate (46) and a hollow bin (411), wherein the hollow bin (411) is fixedly connected to the top of the body (1), the pressing plate (41) is slidably connected to the top of the hollow bin (411), the connecting rod (42) is fixedly connected to the bottom wall inside the hollow bin (411), the cylinder (43) is fixedly connected to the right side of the hollow bin (411), the sliding rod (44) is slidably connected to the inside of the cylinder (43), the push block (45) is fixedly connected to the right side of the sliding rod (44), and the push plate (46) is fixedly connected to the left side of the support frame (38).

5. The groundwater extraction device for layered extraction environmental engineering according to claim 4, characterized in that: The regulating device further comprises a connecting frame (47), a supporting column (48), a scraper (49) and a second connecting rod (410), wherein the connecting frame (47) is fixedly connected to the bottom of the rotating rod (31), the supporting column (48) is rotatably connected to the right side of the connecting frame (47), one end of the second connecting rod (410) is rotatably connected to the bottom of the supporting column (48), and the scraper (49) is fixedly connected to the other end of the second connecting rod (410).

6. The groundwater extraction device for layered extraction environmental engineering according to claim 5, characterized in that: The push block (45) contacts the push plate (46), and the inner ring of the scraper (49) contacts the circumferential surface of the free end of the telescopic rod (2).

7. The groundwater extraction device for layered extraction environmental engineering according to claim 6, characterized in that: The extraction device comprises a protective cover (51), a protective plate (52), a bottom plate (53), a triangular inclined block (54), a shrinking cover (55), an upper circular plate (56), a lower circular plate (57), a collecting cylinder (58) and a telescopic cover (510), wherein the protective cover (51) is fixedly connected to the bottom of the scraper (49), the protective plate (52) is rotatably connected to the bottom of the protective cover (51), the bottom plate (53) is fixedly connected to the bottom of the telescopic rod (2), and the top of the shrinking cover (55) is fixedly connected to the bottom of the scraper (49). The bottom of the bottom plate (53) is connected to the bottom of the bottom plate (53), the upper circular plate (56) is fixedly connected to the bottom of the contraction cover (55), the top of the telescopic cover (510) is fixedly connected to the bottom of the upper circular plate (56), the top of the collecting cylinder (58) is fixedly connected to the bottom of the bottom plate (53), the lower circular plate (57) is fixedly connected to the bottom of the telescopic cover (510), the triangular inclined block (54) is fixedly connected to the top of the bottom plate (53), and the lower circular plate (57) is rotatably connected to the top of the collecting cylinder (58).

8. The groundwater extraction device for layered extraction environmental engineering according to claim 7, characterized in that: A one-way valve (59) is provided at the bottom of the upper circular plate (56), circular holes are provided on the upper and lower surfaces of the lower circular plate (57), four collecting ports are provided at the top of the collecting cylinder (58), a threaded groove is provided on the circumferential surface of the collecting cylinder (58), and the collecting cylinder (58) is threadedly connected to the upper circular plate (56).

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