An automatic sampling device in a rainwater and sewage well

Abstract

The present application discloses an automatic sampling device in a rainwater and sewage well, and relates to the field of well sampling equipment. The device comprises a mounting rod, a water pump, a water pipe and a sampling bottle arranged in the well. The mounting rod is used to install the water pipe and the sampling bottle, and the water outlet of the water pipe faces the sampling bottle. The mounting rod comprises a first rod body and a second rod body. The first rod body is inserted into the second rod body and is slidably connected with the second rod body. The sliding direction of the first rod body is the same as the length direction of the first rod body. A threaded sleeve is fixedly provided at one end of the second rod body close to the first rod body. A plurality of elastic grooves are provided at one end of the threaded sleeve close to the first rod body. A rotating sleeve is threadedly connected to the threaded sleeve. An inclined surface for locking the threaded sleeve is provided at one end of the rotating sleeve away from the second rod body. The present application draws water in the well into the sampling bottle by setting a water pump, and drives the sampling bottle to rotate by a motor, so as to sample the water in the well, thereby reducing the labor intensity of manual sampling.

Description

Technical Field

[0001] The invention relates to the field of well sampling equipment, in particular to an automatic sampling device for rainwater and sewage wells. Background Art

[0002] In recent years, with the acceleration of my country's urbanization process, the growth of urban population and economic development, the contradiction between water supply and demand has become increasingly prominent. At the same time, due to people's lack of understanding of groundwater and improper development and utilization, groundwater resources have been wasted and polluted, which has seriously threatened industrial and agricultural production and people's normal life.

[0003] The work of groundwater pollution investigation includes understanding the characteristics and natural conditions of the pollution site, the concentration and distribution range of pollutants, the transmission status and change trend of pollutants in the underground environment, and the potential harm of groundwater pollution to people's health and life. When sampling, the staff holds a tubular sampler and puts the sampler into the well at the predetermined sampling depth, draws water at the stop point, and then squeezes the drawn water into the sample container.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the manual sampling method places great pressure on the workers to take samples. Summary of the invention

[0005] In order to improve the manual sampling method of sewage in the well and the problem of high labor intensity of the workers, the present application provides an automatic sampling device for rainwater and sewage wells.

[0006] The automatic sampling device for rainwater and sewage wells provided in this application adopts the following technical solution:

[0007] An automatic sampling device in a rainwater and sewage well comprises a mounting rod, a water pump, a water pipe and a sampling bottle arranged in the well, the mounting rod is used to install the water pipe and the sampling bottle, one end of the water pump is connected to the water in the well, the other end of the water pump is connected to the water pipe, and the water outlet of the water pipe faces the sampling bottle, the mounting rod comprises a first rod body and a second rod body, the first rod body is inserted into the second rod body and is slidably connected to the second rod body, the sliding direction of the first rod body is the same as the length direction of the first rod body, an end of the second rod body close to the first rod body is fixedly sleeved with a threaded sleeve, an end of the threaded sleeve close to the first rod body is provided with a plurality of elastic grooves, a rotating sleeve is threadedly connected to the threaded sleeve, and an end of the rotating sleeve away from the second rod body is provided with an inclined surface for locking the threaded sleeve.

[0008] By adopting the above technical solution, the staff connects the water pump and the water pipe and puts the water pump into the well, slides the first rod body to lengthen the length of the installation rod, and after adjusting the length of the installation rod, rotates the rotating sleeve in the direction close to the second rod body. The inclined surface of the rotating sleeve acts on the elastic groove, thereby installing the installation rod in the well wall. The water pump provides power to suck the water in the well into the sampling bottle through the water pipe. The staff then tests the water in the well based on the water in the sampling bottle, thereby reducing the labor intensity of the staff when collecting water samples.

[0009] Optionally, the mounting rod is fixedly connected to a frame, the frame is rotatably connected to a vertically arranged main shaft, the main shaft fixing sleeve is provided with a horizontally arranged tray, the tray rotates along a vertical axis, the sampling bottles are evenly distributed circumferentially along the upper surface of the tray, and the frame is connected to a power mechanism for driving the main shaft to rotate.

[0010] By adopting the above technical solution, the staff controls the operation of the power mechanism, the power mechanism drives the main shaft to rotate, the main shaft rotates and the tray rotates, the tray rotates and several sampling bottles rotate, so that after the water pump has been working for a period of time, several sampling bottles can be filled with test samples, which makes it convenient for the staff to conduct tests based on the samples in multiple sampling bottles.

[0011] Optionally, the power mechanism includes a first motor, a first bevel gear and a second bevel gear, the first motor is horizontally arranged and fixedly connected to the frame, the first bevel gear is fixedly sleeved on the output shaft of the first motor, the second bevel gear is fixedly sleeved on the main rotating shaft, and the first bevel gear and the second bevel gear are meshed with each other.

[0012] By adopting the above technical solution, the first motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the main shaft to rotate during the rotation, and the main shaft drives the tray to rotate.

[0013] Optionally, the power mechanism includes a first pulley, a second pulley, a third bevel gear, a fourth bevel gear, a third rotating shaft and a horizontally arranged second motor, the second motor is fixedly connected to the frame, the first pulley is fixedly sleeved on the output shaft of the second motor, the second pulley is fixedly sleeved on the third rotating shaft, the third rotating shaft is parallel to the output shaft of the second motor, and the third rotating shaft and the main rotating shaft are perpendicular to each other, the first pulley and the second pulley are sleeved with a conveyor belt that drives the first pulley and the second pulley to rotate synchronously, the third bevel gear is fixedly sleeved on the third rotating shaft, the fourth bevel gear is fixedly sleeved on the main rotating shaft, and the third bevel gear and the fourth bevel gear are meshed with each other.

[0014] By adopting the above technical solution, the rotation of the second motor drives the first pulley to rotate, the first pulley drives the second pulley to rotate through the conveyor belt, the rotation of the second pulley drives the third bevel gear to rotate, the third bevel gear drives the fourth bevel gear to rotate, the fourth bevel gear drives the main shaft to rotate, and the main shaft drives the tray to rotate.

[0015] Optionally, a lifting platform is connected to the bottom of the water pump, and lifting rings are provided on both sides of the lifting platform. The lifting platform includes a base and a lifting part. The lifting part slides up and down relative to the base, and the base is provided with a driving structure for driving the lifting part to slide. The base is also connected to a positioning structure for positioning the height of the lifting part.

[0016] By adopting the above technical solution, before placing the water pump into the bottom of the well, the staff adjusts the height of the lifting platform according to the height of the sludge at the bottom of the well. The lifting platform is first driven up by the driving structure, and after being adjusted to a suitable height, the height of the lifting platform is positioned by the positioning structure, and then the height of the water pump is adjusted, so that the water pump is not easily sucked into the sludge at the bottom of the well.

[0017] Optionally, the driving structure includes a first rotating shaft, a second rotating shaft, a first gear, a second gear, a driving gear, a handwheel and a sliding rod that slides in a vertical direction, the sliding rod is vertically arranged, and the top of the sliding rod is fixedly connected to the lifting part, the first rotating shaft and the second rotating shaft are both horizontally arranged and rotatably connected to the base, the first gear is fixedly mounted on the first rotating shaft, the second gear is fixedly mounted on the second rotating shaft, the driving gear is fixedly mounted on the first rotating shaft, the handwheel is fixedly mounted on the second rotating shaft, the first gear and the second gear are meshed with each other, and the fixed rod is provided with a tooth groove that meshes with the driving gear.

[0018] By adopting the above technical solution, when the height of the lifting part needs to be adjusted, the staff turns the hand wheel, the hand wheel drives the second shaft to rotate, the second shaft drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the first shaft to rotate, and the driving gear rotates during the rotation of the first shaft. Since the driving gear and the tooth groove of the sliding rod cooperate with each other, the sliding rod is driven to slide up and down in the vertical direction, and the sliding rod drives the lifting part to slide up and down.

[0019] Optionally, the positioning structure includes a ratchet and a pawl, the pawl is rotatably connected to the base, and the ratchet is fixedly sleeved on the second rotating shaft. When the handwheel rotates clockwise, the pawl slides on the back of the teeth of the ratchet and the sliding rod slides upward. When the handwheel is rotated counterclockwise, the pawl is inserted into the tooth groove of the ratchet to prevent the ratchet from rotating. A torsion spring is connected between the pawl and the base to make the pawl fit on the ratchet.

[0020] By adopting the above technical solution, the arrangement of the ratchet and the pawl makes it possible for the second gear to rotate only clockwise but difficult to rotate counterclockwise. Therefore, after the staff turns the handwheel clockwise and adjusts the height of the lifting part, the torsion spring causes the pawl to be inserted into the ratchet, thereby positioning the height of the lifting part; when it is necessary to turn the handwheel counterclockwise, the staff only needs to overcome the force of the torsion spring and turn the pawl to stop limiting the ratchet. At the same time, due to the gravity of the sliding rod itself, the sliding rod moves downward, and the driving wheel rotates clockwise. When the sliding rod drops to a certain height, the staff releases the pawl again, and the pawl is reset at this time and has a limiting effect on the ratchet.

[0021] Optionally, the sampling bottle includes a bottle body, a cover body and a floating cover, the cover body and the floating cover are both covered at the bottle mouth of the bottle body, the floating cover is used to open and close the bottle body, the floating cover is hinged to the cover body, and an air bag is provided on the bottom surface of the floating cover.

[0022] By adopting the above technical solution, when the water level in the bottle body gradually rises to the bottle mouth, the air bag floats on the water surface as the water level rises, so that the floating cover rotates upward and is parallel to the cover body, so that the floating cover and the cover body close the bottle mouth, and water is not easy to flow into the bottle body at this time.

[0023] Optionally, a clamping ring is fixedly connected to the mounting rod, and the clamping ring is used to be clamped in a clamping groove between the external water well wall and the well cover.

[0024] By adopting the above technical solution, after the water pump and the sampling bottle are placed at the bottom of the well, the clamping ring further plays a supporting role, making the sampling system more stable.

[0025] Optionally, a handle is provided on a side of the frame close to the manhole cover.

[0026] By adopting the above technical solution, when the staff lifts the sampling bottle, they lift it by the handle, which improves convenience.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] The staff connects the water pump and the water pipe and puts the water pump into the well, slides the first rod body to lengthen the length of the installation rod, and after adjusting the length of the installation rod, rotates the rotating sleeve in the direction close to the second rod body. The inclined surface of the rotating sleeve acts on the elastic groove, thereby installing the installation rod in the well wall. The water pump provides power to suck the water in the well into the sampling bottle through the water pipe. The staff then tests the water in the well based on the water in the sampling bottle, thereby reducing the labor intensity of the staff when collecting water samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a structural schematic diagram of an automatic sampling device in a rainwater and sewage well according to an embodiment of the present application.

[0030] Figure 2 It is a structural schematic diagram of the power mechanism in Example 1 of the present application.

[0031] Figure 3 It is a schematic diagram of the structure of the mounting rod in the first embodiment of the present application.

[0032] Figure 4 It is a schematic diagram of the structure of the sampling bottle in Example 1 of the present application.

[0033] Figure 5 It is a structural schematic diagram of the lifting platform in Example 1 of the present application.

[0034] Figure 6 It is a structural schematic diagram of the power mechanism in Example 2 of the present application.

[0035] Description of the accompanying drawings: 1. manhole cover; 2. mounting rod; 3. water pump; 4. water pipe; 5. hose; 6. U-shaped stainless steel pipe; 7. sampling bottle; 8. first rod body; 9. second rod body; 10. threaded sleeve; 11. elastic groove; 12. rotating sleeve; 13. inclined plane; 14. frame; 15. main rotating shaft; 16. tray; 17. power mechanism; 18. first motor; 19. first bevel gear; 20. second bevel gear; 21. second motor; 22. first pulley; 23. second pulley; 24. third bevel gear; 25. fourth bevel gear; 26. third rotating shaft; 27. Conveyor belt; 28, lifting platform; 29, lifting ring; 30, base; 31, lifting part; 32, driving structure; 33, positioning structure; 34, first rotating shaft; 35, second rotating shaft; 36, first gear; 37, second gear; 38, driving gear; 39, hand wheel; 40, sliding rod; 41, tooth groove; 42, ratchet; 43, pawl; 44, pressing piece; 45, bottle body; 46, cover body; 47, floating cover; 48, airbag; 49, snap ring; 50, water well wall; 51, slot; 52, handle; 53, anti-slip rubber; 54, protrusion; 55, auxiliary driving part. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0037] The first embodiment of the present application discloses an automatic sampling device for rainwater and sewage wells. Figure 1 and Figure 2The automatic sampling device in the rainwater and sewage well includes a mounting rod 2 arranged in the well, a lifting platform 28 placed at the bottom of the well, a mounting rod 2 arranged in the water well wall 50, and a clamping ring 49 clamped at the clamping groove 51 between the water well wall 50 and the well cover 1. Both sides of the lifting platform 28 are provided with lifting rings 29. The upper surface of the lifting platform 28 is provided with a water pump 3. One end of the water pump 3 is connected to the water at the bottom of the well. The other end of the water pump 3 is connected to a water pipe 4. The water pipe 4 includes a hose 5 and a U-shaped stainless steel pipe 6. The hose 5 is connected to the water pump 3. The U-shaped stainless steel pipe 6 is fixedly connected to the end of the hose 5 away from the water pump 3. The water outlet of the U-shaped stainless steel pipe 6 faces the sampling bottle 7. The mounting rod 2 is horizontally arranged and fixedly arranged below the clamping ring 49. Both ends of the mounting rod 2 are fixedly provided with anti-skid rubber 53 for improving friction. The mounting rod 2 is used to install the U-shaped stainless steel pipe 6 and the sampling bottle 7.

[0038] Reference Figure 1 and Figure 3 The mounting rod 2 includes a first rod body 8 and a second rod body 9. The first rod body 8 is inserted into the second rod body 9 and is slidably connected to the second rod body 9. The sliding direction of the first rod body 8 is the same as the length direction of the first rod body 8. A threaded sleeve 10 is fixedly sleeved on one end of the second rod body 9 close to the first rod body 8. A plurality of elastic grooves 11 are provided on one end of the threaded sleeve 10 close to the first rod body 8. A rotating sleeve 12 is threadedly connected to the threaded sleeve 10. An inclined surface 13 for locking the threaded sleeve 10 is provided on the end of the rotating sleeve 12 away from the second rod body 9.

[0039] Reference Figure 1 and Figure 4 The sampling bottle 7 includes a cover body 46 and a floating cover 47. The cover body 46 and the floating cover 47 are both covered at the opening of the bottle body 45. The floating cover 47 is used to open and close the bottle body 45. An air bag 48 is provided at the bottom of the floating cover 47. The inner wall of the bottle body 45 is provided with a protrusion 54 for limiting the floating cover 47, so that the upper limit of the floating cover 47 is in a horizontal state.

[0040] Reference Figure 1 and Figure 2 The mounting rod 2 is fixedly connected to a frame 14, a handle 52 is provided on one side of the frame 14 close to the manhole cover 1, the frame 14 is rotatably connected to a vertically arranged main shaft 15, the main shaft 15 is fixedly sleeved with a horizontally arranged tray 16, the axis of the main shaft 15 coincides with the center of the circle of the tray 16, the tray 16 rotates horizontally along the main shaft 15 as the axis, there are several sampling bottles 7, and the several sampling bottles 7 are evenly distributed along the circumference of the upper surface of the tray 16, the staff can choose to use different numbers of sampling bottles 7 according to actual conditions, in the embodiment of the present application, there are 12 sampling bottles 7, the upper surface of the tray 16 is provided with several sinking grooves for placing the sampling bottles 7, and the frame 14 is provided with a power mechanism 17 for driving the main shaft 15 to rotate.

[0041] Reference Figure 1 and Figure 2 The power mechanism 17 includes a first motor 18, a first bevel gear 19 and a second bevel gear 20. The first motor 18 is horizontally arranged and fixedly connected to the frame 14. The first bevel gear 19 is fixedly sleeved on the output shaft of the first motor 18. The second bevel gear 20 is fixedly sleeved on the main shaft 15, and the first bevel gear 19 and the second bevel gear 20 are meshed with each other.

[0042] Reference Figure 1 and Figure 5 The lifting platform 28 includes a base 30 and a lifting part 31. The lifting part 31 slides up and down relative to the base 30. The base 30 is provided with a driving structure 32 for driving the lifting part 31 to slide. The base 30 is also connected to a positioning structure 33 for positioning the height of the lifting part 31. The driving structure 32 includes a first rotating shaft 34, a second rotating shaft 35, a first gear 36, a second gear 37, a driving gear 38, a handle and a sliding rod 40 that slides in a vertical direction. The sliding rod 40 is vertically arranged, and the top of the sliding rod 40 is fixedly connected to the lifting part 31. The first rotating shaft 34 and the second rotating shaft 35 are both horizontally arranged and rotatably connected to the base 30. The first gear 36 is fixedly sleeved on the first rotating shaft 34, the second gear 37 is fixedly sleeved on the second rotating shaft 35, the driving gear 38 is fixedly sleeved on the first rotating shaft 34, and the hand wheel 39 is fixedly sleeved on the second rotating shaft 35. The first gear 36 and the second gear 37 are meshed with each other. The fixed rod is provided with a tooth groove 41 that is meshed with the driving gear 38. When the handle is rotated clockwise, the sliding rod 40 slides upward; when the handle is rotated counterclockwise, the sliding rod 40 slides downward. The embodiment of the present application is also provided with an auxiliary driving part 55. The structure of the auxiliary driving part 55 and the driving structure 32 is symmetrically arranged relative to the central axis of the lifting platform 28, which will not be described here. The positioning structure 33 includes a ratchet 42 and a pawl 43. The pawl 43 is rotatably connected to the base 30. A pressing plate 44 is provided on the pawl 43 to facilitate the staff to rotate the pawl 43. A torsion spring is connected between the pawl 43 and the base 30 to make the pawl 43 fit on the ratchet 42. The ratchet 42 is fixedly sleeved on the second rotating shaft 35. When the handwheel 39 rotates clockwise, the pawl 43 slides on the back of the teeth of the ratchet 42, and at this time the sliding rod 40 slides upward. When the handwheel 39 is rotated counterclockwise, the pawl 43 is inserted into the tooth groove 41 of the ratchet 42 to prevent the ratchet 42 from rotating.

[0043] The implementation principle of the automatic sampling device in the rainwater and sewage well in the first embodiment of the present application is as follows: before starting the operation, the staff first adjusts the height of the lifting platform 28 according to the sludge in the well, so that the water pump 3 is not easy to suck in the sludge at the bottom of the well and affect the collection of samples. Then the staff hooks the lifting platform 28 and the water pump 3 to the bottom of the well by using an external tool, and then clamps the clamp ring 49 at a suitable position on the well wall, and adjusts the length of the installation rod 2 at the same time. During the operation of the water pump 3, the water in the well is continuously sucked into the sampling bottle through the water pipe 4. The staff controls the first motor 18 to work, and the first motor 18 drives the first bevel gear 19 to rotate, and the first bevel gear 19 drives the second bevel gear 20 to rotate, and the second bevel gear 20 drives the main shaft 15 to rotate, thereby driving the tray 16 to rotate and several sampling bottles 7 to rotate. During the rotation of the sampling bottles 7, the sample water levels in the several sampling bottles 7 gradually increase, and in the process of rising water levels, the airbag 48 will push the floating cover 47 to gradually rotate upward until the protrusion 54 limits the floating cover 47, and at the same time the floating cover 47 closes the bottle body 45, so that the water sucked up by the water pump 3 is not easy to enter the sampling bottle 7, thereby reducing the labor intensity of the staff when collecting water samples.

[0044] The second embodiment of the present application discloses an automatic sampling device for rainwater and sewage wells. Figure 6 , which has the same main structure and function as the first embodiment of the present application, and the difference lies in that: the power mechanism 17 includes a first pulley 22, a second pulley 23, a third bevel gear 24, a fourth bevel gear 25, a third rotating shaft 26 and a horizontally arranged second motor 21, the second motor 21 is fixedly connected to the frame 14, the first pulley 22 is fixedly sleeved on the output shaft of the second motor 21, the second pulley 23 is fixedly sleeved on the third rotating shaft 26, the third rotating shaft 26 is parallel to the output shaft of the second motor 21, and the third rotating shaft 26 is perpendicular to the main rotating shaft 15, the first pulley 22 and the second pulley 23 are sleeved with a conveyor belt 27 for driving the first pulley 22 and the second pulley 23 to rotate synchronously, the third bevel gear 24 is fixedly sleeved on the third rotating shaft 26, the fourth bevel gear 25 is fixedly sleeved on the main rotating shaft 15, and the third bevel gear 24 and the fourth bevel gear 25 are meshed with each other.

[0045] The implementation principle of the automatic sampling device in the rainwater and sewage well in the second embodiment of the present application is as follows: before starting the operation, the staff first adjusts the height of the lifting platform 28 according to the sludge in the well, so that the water pump 3 is not easy to suck the sludge at the bottom of the well and affect the collection of samples. Then the staff hooks the lifting platform 28 and the water pump 3 to the bottom of the well by using an external tool, and then clamps the clamping ring 49 at a suitable position on the well wall, and adjusts the length of the installation rod 2 at the same time. During the operation of the water pump 3, the water in the well is continuously sucked into the sampling bottle through the water pipe 4. The staff controls the second motor 21 to work. During the operation of the second motor 21, the first pulley 22 is driven to rotate. The first pulley 22 drives the second pulley 23 to rotate through the conveyor belt 27. The second pulley 23 drives the third bevel gear 24 to rotate. The third bevel gear 24 drives the fourth bevel gear 25 to rotate. The fourth bevel gear 25 drives the main shaft 15 to rotate, thereby driving the tray 16 and several sampling bottles 7 to rotate. During the rotation of the sampling bottles 7, the sample water levels in the several sampling bottles 7 gradually increase. During the water level increase, the airbag 48 will push the floating cover 47 to gradually rotate upward until the protrusion 54 limits the floating cover 47. At the same time, the floating cover 47 closes the bottle body 45, so that the water sucked up by the water pump 3 is not easy to enter the sampling bottle 7, thereby reducing the labor intensity of the staff when collecting water samples.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic sampling device for rainwater and sewage wells, characterized in that: The invention comprises a mounting rod (2), a water pump (3), a water pipe (4) and a sampling bottle (7) arranged in a well, wherein the mounting rod (2) is used to mount the water pipe (4) and the sampling bottle (7), one end of the water pump (3) is connected to the water in the well, the other end of the water pump (3) is connected to the water pipe (4), and the water outlet of the water pipe (4) faces the sampling bottle (7), and the mounting rod (2) comprises a first rod body (8) and a second rod body (9), wherein the first rod body (8) is inserted into the second rod body (9) and is connected to the second rod body (9). The rod body (9) is slidably connected, the sliding direction of the first rod body (8) is the same as the length direction of the first rod body (8), the end of the second rod body (9) close to the first rod body (8) is fixedly sleeved with a threaded sleeve (10), the end of the threaded sleeve (10) close to the first rod body (8) is provided with a plurality of elastic grooves (11), the threaded sleeve (10) is threadedly connected with a rotating sleeve (12), and the end of the rotating sleeve (12) away from the second rod body (9) is provided with a locking member for locking the threaded sleeve (11). 10) of the inclined surface (13); the mounting rod (2) is fixedly connected to a frame (14), the frame (14) is rotatably connected to a vertically arranged main rotating shaft (15), the main rotating shaft (15) is fixedly sleeved with a horizontally arranged tray (16), the tray (16) rotates along a vertical axis, there are a plurality of sampling bottles (7), and the plurality of sampling bottles (7) are evenly distributed along the circumference of the upper surface of the tray (16), the frame (14) is connected to a drive for driving the main rotating shaft (15) to rotate The water pump (3) is provided with a power mechanism (17); a lifting platform (28) is connected to the bottom of the water pump (3); lifting rings (29) are provided on both sides of the lifting platform (28); the lifting platform (28) comprises a base (30) and a lifting part (31); the lifting part (31) slides up and down relative to the base (30); the base (30) is provided with a driving structure (32) for driving the lifting part (31) to slide; the base (30) is also connected with a positioning structure (33) for positioning the height of the lifting part (31);The driving structure (32) comprises a first rotating shaft (34), a second rotating shaft (35), a first gear (36), a second gear (37), a driving gear (38), a hand wheel (39) and a sliding rod (40) that slides in a vertical direction. The sliding rod (40) is vertically arranged, and the top of the sliding rod (40) is fixedly connected to the lifting part (31). The first rotating shaft (34) and the second rotating shaft (35) are both horizontally arranged and rotatably connected to the base (30). The first gear (36) is fixedly sleeved on the first rotating shaft (34), the second gear (37) is fixedly sleeved on the second rotating shaft (35), the driving gear (38) is fixedly sleeved on the first rotating shaft (34), the hand wheel (39) is fixedly sleeved on the second rotating shaft (35), and the first gear (36) is fixedly sleeved on the second rotating shaft (35). ) and the second gear (37) are meshed with each other, and the sliding rod (40) is provided with a tooth groove (41) meshed with the driving gear (38); the positioning structure (33) includes a ratchet (42) and a pawl (43), the pawl (43) is rotatably connected to the base (30), the ratchet (42) is fixedly sleeved on the second rotating shaft (35), when the hand wheel (39) rotates clockwise, the pawl (43) slides on the back of the teeth of the ratchet (42), and the sliding rod (40) slides upward, when the hand wheel (39) rotates counterclockwise, the pawl (43) is inserted into the tooth groove of the ratchet (42) to prevent the ratchet (42) from rotating, and a torsion spring for making the pawl (43) fit on the ratchet (42) is connected between the pawl (43) and the base (30). ; 2. The automatic sampling device for rainwater and sewage wells according to claim 1 is characterized in that: The power mechanism (17) comprises a first motor (18), a first bevel gear (19) and a second bevel gear (20); the first motor (18) is horizontally arranged and fixedly connected to the frame (14); the first bevel gear (19) is fixedly sleeved on the output shaft of the first motor (18); the second bevel gear (20) is fixedly sleeved on the main rotating shaft (15); and the first bevel gear (19) and the second bevel gear (20) are meshed with each other.

3. The automatic sampling device in a rainwater and sewage well according to claim 1 is characterized in that: The power mechanism (17) comprises a first pulley (22), a second pulley (23), a third bevel gear (24), a fourth bevel gear (25), a third rotating shaft (26) and a second motor (21) arranged horizontally, wherein the second motor (21) is fixedly connected to the frame (14), the first pulley (22) is fixedly sleeved on the output shaft of the second motor (21), the second pulley (23) is fixedly sleeved on the third rotating shaft (26), and the third rotating shaft (26) is connected to the second motor (21). The third rotating shaft (26) is parallel to the output shaft of the main rotating shaft (15), and the third rotating shaft (26) is perpendicular to the main rotating shaft (15). The first belt pulley (22) and the second belt pulley (23) are sleeved with a conveyor belt (27) for driving the first belt pulley (22) and the second belt pulley (23) to rotate synchronously. The third bevel gear (24) is fixedly sleeved on the third rotating shaft (26), and the fourth bevel gear (25) is fixedly sleeved on the main rotating shaft (15), and the third bevel gear (24) and the fourth bevel gear (25) are meshed with each other.

4. The automatic sampling device for rainwater and sewage wells according to claim 1 is characterized in that: The sampling bottle (7) comprises a bottle body (45), a cover body (46) and a floating cover (47). The cover body (46) and the floating cover (47) are both arranged on the bottle mouth of the bottle body (45). The floating cover (47) is used to open and close the bottle body (45). The floating cover (47) is hinged to the cover body (46). An air bag (48) is arranged on the bottom surface of the floating cover (47).

5. The automatic sampling device in a rainwater and sewage well according to claim 1 is characterized in that: A clamping ring (49) is fixedly connected to the installation rod (2), and the clamping ring (49) is used to be clamped in a clamping groove (51) between an external water well wall (50) and the well cover (1).

6. The automatic sampling device for rainwater and sewage wells according to claim 1 is characterized in that: A handle (52) is provided on one side of the frame (14) close to the manhole cover (1).

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