A precipitation well structure

Abstract

The present application discloses a precipitation well structure, which relates to the technical field of precipitation engineering. It includes a precipitation pipe, a water extraction pipe, and a water extraction part. The precipitation pipe is provided with water inlet holes, a filter layer is arranged on the peripheral side of the precipitation pipe, a sealing layer is arranged on the peripheral side of the precipitation pipe, a blocking block is arranged on the peripheral side of the water extraction pipe, a connecting pipe is arranged on the precipitation pipe, the connecting pipes correspond to the water inlet holes one by one and are installed in the water inlet holes, the connecting pipe is rotatably connected with a rotating shaft, a support column located inside the connecting pipe is arranged on the peripheral side wall of the rotating shaft, the side of the support column away from the rotating shaft can be flipped outside the connecting pipe, the bottom of the support column is slidably connected with a connecting column, a scraping plate for cleaning the bottom pipe wall of the connecting pipe is arranged at the bottom of the connecting column, an elastic driving part is arranged on the support column, a guiding part is arranged on the connecting pipe, a plurality of driving columns slide up and down on the precipitation pipe, the driving columns are parallel to the rotating shaft and each group of driving columns corresponds to the rotating shaft in the same vertical direction, and a driving assembly is arranged on the precipitation pipe. The present application can clean the sedimented soil in the precipitation holes.

Description

Technical Field

[0001] The present application relates to the technical field of precipitation engineering, and particularly relates to a precipitation well structure. Background Art

[0002] During the construction of building foundation works, it is usually necessary to construct precipitation wells to lower the groundwater level and avoid the influence of too high groundwater level on the construction of foundation works.

[0003] Referring to Figure 1 , a precipitation well structure includes a pipe body 1 inserted into the soil. A plurality of precipitation holes 11 are opened on the circumferential side of the pipe body 1. A gravel layer 12 composed of gravel is laid on the circumferential side and the bottom of the pipe body 1 for filtration. A clay layer 13 is arranged on the top of the gravel layer 12 for sealing. At the same time, the pipe orifice is blocked by a sealing block 14. A water outlet pipe 15 is fixedly connected to the middle of the sealing block 14. A submersible pump 16 is communicated with the bottom of the water outlet pipe 15. When precipitating, the submersible pump 16 is started. The submersible pump 16 pumps water to form a negative pressure, so that the water flow in the soil around the pipe body 1 passes through the gravel layer 12 for filtration and then enters the pipe body 1 through the precipitation holes 11, and is then pumped out by the submersible pump 16 and discharged from the water outlet pipe 15.

[0004] Regarding the above related technology, the inventor believes that there are the following defects: there are certain gaps between the gravels, so the soil with smaller particle size will pass through the gravel layer 12. When the water flow in the soil is small, the soil in the water flow is likely to deposit on the pore wall of the precipitation holes 11, gradually narrowing the precipitation holes 11 and affecting the water flow through rate. Summary of the Invention

[0005] In order to clean the deposited soil in the precipitation holes, the present application provides a precipitation well structure.

[0006] The present application provides a precipitation well structure, adopting the following technical solution:

[0007] A precipitation well structure includes a drain pipe inserted into the soil, a water extraction pipe inserted into the drain pipe, and a water extraction part communicated with the water extraction pipe. The peripheral side wall of the drain pipe is evenly spaced with water inlet holes. A filter layer is arranged on the peripheral side of the drain pipe. A sealing layer is arranged on the peripheral side of the drain pipe and above the filter layer. A plugging block for closing the pipe orifice of the drain pipe is arranged on the peripheral side of the water extraction pipe. A connecting pipe is arranged on the drain pipe. The connecting pipes correspond to the water inlet holes one by one and are installed in the water inlet holes. The connecting pipe is rotatably connected with a rotating shaft. The central axis of the rotating shaft is parallel to the central axis of the drain pipe. A support column located in the connecting pipe is arranged on the peripheral side wall of the rotating shaft. One side of the support column away from the rotating shaft can be flipped outside the connecting pipe. The bottom of the support column is slidably connected with a connecting column. The connecting column slides along the extending direction of the support column and is rotatably connected with the support column. A scraping plate for cleaning the bottom wall of the connecting pipe is arranged at the bottom of the connecting column. An elastic driving part for driving the connecting column to slide away from the rotating shaft is arranged on the support column. A guiding part for guiding the scraping plate to slide along the central axis direction of the connecting pipe is arranged on the connecting pipe. A plurality of driving columns slide up and down on the drain pipe. The driving columns are parallel to the rotating shaft and each group of driving columns corresponds to the rotating shaft in the same vertical direction. A driving component is arranged on the drain pipe to drive the support column to reciprocally flip towards the two side orifices of the connecting pipe when the driving column slides downwards.

[0008] By adopting the above technical solution, when it is necessary to clean the deposited soil, the driving column is slid downwards. Then, the driving component drives the rotating shaft to rotate, so that the support column reciprocally flips between the two side orifices of the connecting pipe, drives the scraping plate to slide, and scrapes the soil deposited at the bottom of the connecting pipe, improving the flow rate of water that can pass through the connecting pipe.

[0009] Optionally, the driving component includes a driving block, a driving strip, and a driving coil spring. The driving coil spring is arranged in the connecting pipe. One end of the driving coil spring is clamped to the rotating shaft, and the other end is clamped to the connecting pipe. The driving strip is arranged on the outer peripheral side of the rotating shaft and extends spirally upwards. There are a plurality of driving blocks, which are arranged at intervals up and down on the driving column. When the driving column slides downwards, the driving block slides on the side of the driving strip facing the pipe orifice of the drain pipe. When the driving block slides on the side of the driving strip facing the pipe orifice of the drain pipe, the support column flips from inside the drain pipe to outside the drain pipe.

[0010] By adopting the above technical solution, when the driving column slides downwards, the driving block slides on the driving strip, driving the rotating shaft to rotate. Then, when the driving block disengages from the driving strip and the adjacent upper driving block has not slid onto the driving strip, the driving coil spring drives the rotating shaft to reverse, so that the support column flips between the two side orifices of the connecting pipe. After that, the support column reciprocates according to the same steps to scrape the soil deposited in the connecting pipe.

[0011] Optionally, the driving block is in a hemispherical block structure.

[0012] By adopting the above technical solution, the frictional force generated when the driving block slides on the driving strip is reduced.

[0013] Optionally, the guiding member is a guiding column, the guiding column is arranged on the inner wall of the connecting pipe, both ends of the guiding column extend out of the connecting pipe along the central axis direction of the connecting pipe respectively, a guiding groove located directly below the connecting column is formed on the side of the scraping plate facing away from the connecting column, and the guiding column slides in the guiding groove.

[0014] By adopting the above technical solution, the movement track of the scraping plate is restricted, so that the movement track of the scraping plate can keep a state parallel to the central axis of the connecting pipe.

[0015] Optionally, the elastic driving member is a driving spring, a sliding groove is formed at the bottom of the supporting column, the connecting column slides in the sliding groove, one end of the driving spring abuts against the connecting column, and the other end is fixed to the side of the sliding groove close to the rotating shaft.

[0016] By adopting the above technical solution, when in use, the driving spring elastically releases, pushes the connecting column to slide, so that the scraping plate can scrape the deposited soil in the connecting pipe.

[0017] Optionally, when the connecting column slides to abut against the groove wall of the sliding groove away from the rotating shaft, the guiding column is located in the guiding groove.

[0018] By adopting the above technical solution, the scraping plate is supported, the possibility of the connecting column disengaging from the sliding groove is reduced, and at the same time, the state of the scraping plate being aligned with the connecting pipe is maintained, which is convenient for the scraping plate to slide into the connecting pipe.

[0019] Optionally, the connecting pipe includes a first pipe body and a second pipe body, the second pipe bodies are symmetrically arranged and are respectively located at both ends of the first pipe body, the first pipe body is fixed to the pore wall of the water inlet hole, the guiding column is fixed to the first pipe body, the second pipe bodies are respectively rotatably connected to the first pipe body and the pore wall of the water inlet hole, and the downcomer is provided with a control component for controlling the rotation of the second pipe body when the driving column moves up and down.

[0020] By adopting the above technical solution, the control component controls the rotation of the second pipe body, and the range where the scraping plate can scrape the soil is increased.

[0021] Optionally, the control component includes a control rack and a control gear, the control gears correspond to the second pipe bodies one by one and are sleeved on the outer peripheral sides of the second pipe bodies, the control racks are symmetrically arranged on the vertical side walls on the opposite sides of the driving column, the control racks slide up and down in the downcomer, and the control racks are meshed with the control gears.

[0022] By adopting the above technical solution, when the driving column moves up and down, the rack is controlled to drive the control gear to rotate, so that the second pipe body enters a rotating state.

[0023] Optionally, a linkage bar for linking adjacent driving columns is arranged at the top of the driving column.

[0024] By adopting the above technical solution, when in use, the driving columns are linked through the linkage bar, reducing the cumbersome degree of operation of the driving columns.

[0025] In summary, the present application includes at least one of the following beneficial effects:

[0026] 1. When cleaning, press the driving column downward. At this time, the driving assembly drives the rotating shaft to rotate, so that the support column flips on both sides of the connecting pipe, which is beneficial to driving the scraper to scrape the deposited soil;

[0027] 2. The second pipe body rotates, increasing the range of the scraper scraping the deposited soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the related art;

[0029] Figure 2 is an external structural schematic diagram of an embodiment of the present application;

[0030] Figure 3 is an internal cross-sectional schematic diagram of an embodiment of the present application;

[0031] Figure 4 is a schematic diagram showing the structure of the connecting pipe in an embodiment of the present application;

[0032] Figure 5 is a cross-sectional schematic diagram showing the driving block sliding in front of the driving bar in an embodiment of the present application;

[0033] Figure 6 is Figure 5 an enlarged schematic diagram of part A;

[0034] Figure 7 is a cross-sectional schematic diagram showing the internal structure of the connecting pipe in an embodiment of the present application;

[0035] Figure 8 is a schematic diagram showing the state when the driving gear meshes with the driving rack in an embodiment of the present application;

[0036] Figure 9 is Figure 8 an enlarged schematic diagram of part B.

[0037] Reference numerals: 1, pipe body; 11, precipitation holes; 12, gravel layer; 13, clay layer; 14, sealing block; 15, outlet pipe; 16, submersible pump; 2, precipitation pipe; 21, water extraction pipe; 22, water extraction part; 23, water inlet holes; 231, receiving groove; 24, filter layer; 25, sealing layer; 26, plugging block; 27, driving groove; 3, connecting pipe; 31, first pipe body; 311, installation hole; 312, rotating groove; 32, second pipe body; 33, guiding column; 4, rotating shaft; 41, supporting column; 411, sliding groove; 412, driving spring; 42, connecting column; 43, scraping plate; 431, guiding groove; 44, rotating roller; 5, driving column; 6, driving assembly; 61, driving block; 62, driving strip; 63, driving coil spring; 7, control assembly; 71, control gear; 72, control rack; 8, linkage bar. Detailed implementation manners

[0038] The following will Figure 2-9 further elaborate on this application.

[0039] An embodiment of this application discloses a precipitation well structure. Refer to Figure 2 and Figure 3 , the precipitation well structure includes a precipitation pipe 2, a water extraction pipe 21, and a water extraction part 22. The precipitation pipe 2 is inserted into the soil, and the orifice part of the precipitation pipe 2 is blocked by a plugging block 26 for sealing the precipitation pipe 2. The water extraction pipe 21 is fixed to the plugging block 26 and extends into the precipitation pipe 2. The water extraction part 22 can be a water extraction pump or a submersible pump. When the water extraction part 22 is a water extraction pump, the water extraction pump is communicated with the water extraction pipe 21 and is located outside the precipitation pipe 2; when the water extraction part 22 is a submersible pump, the submersible pump is communicated with the water extraction pipe 21 and is located inside the precipitation pipe 2. A plurality of water inlet holes 23 are evenly spaced on the circumferential side wall of the precipitation pipe 2, and the upper and lower adjacent water inlet holes 23 are on the same vertical line. A filter layer 24 composed of gravel is respectively laid on the outer peripheral side and the bottom of the precipitation pipe 2, and a sealing layer 25 composed of clay is also laid on the outer peripheral side of the precipitation pipe 2. The sealing layer 25 is located on the top of the filter layer 24. When precipitation is required, the water extraction part 22 is started to pump out the water flow in the precipitation pipe 2. At this time, a negative pressure is formed in the precipitation pipe 2, and the water flow in the surrounding soil enters the precipitation pipe 2 after being filtered by the filter layer 24 and is finally pumped out through the water extraction pipe 21.

[0040] Refer to Figure 3 and Figure 4 , the precipitation pipe 2 is provided with a connecting pipe 3. There are a plurality of connecting pipes 3, which are in one-to-one correspondence with the water inlet holes 23 and are coaxially arranged. The connecting pipe 3 includes a first pipe body 31 and a second pipe body 32. The first pipe body 31 is fixed at the middle position of the hole wall of the water inlet hole 23, and there are two symmetrically arranged second pipe bodies 32, which respectively rotate at both ends of the first pipe body 31, and the second pipe body 32 is rotatably connected to the hole wall of the water inlet hole 23.

[0041] Refer toFigure 5 and Figure 6 , an installation hole 311 is formed in the first pipe body 31, and the installation hole 311 communicates with the water inlet hole 23. A rotating shaft 4 is provided on the first pipe body 31. Rotating grooves 312 are respectively formed in the opposite side walls of the installation hole 311. Rotating rollers 44 are respectively fixedly connected to both ends of the rotating shaft 4, and the rotating rollers 44 are respectively rotatably connected in the rotating grooves 312. The central axis of the rotating shaft 4 is parallel to the central axis of the downcomer 2. A receiving groove 231 communicating with the installation hole 311 is formed in the wall of the water inlet hole 23. The rotating shaft 4 respectively protrudes into the receiving groove 231 and the first pipe body 31. The receiving grooves 231 corresponding to the water inlet hole 23 on the same vertical line are also on the same vertical line.

[0042] See Figure 6 and Figure 7 , a support column 41 is fixedly connected to the outer peripheral side of the rotating shaft 4. The support column 41 is in the shape of a long rectangular prism. The support column 41 extends into the first pipe body 31. When the rotating shaft 4 rotates, the side of the support column 41 away from the rotating shaft 4 can be flipped outside the water inlet hole 23. A sliding groove 411 extending along the length direction is formed at the bottom of the support column 41. A connecting column 42 is provided on the support column 41. The connecting column 42 is in the shape of a long cylinder. The connecting column 42 slides in the sliding groove 411 and the connecting column 42 is perpendicular to the support column 41. A scraping plate 43 in the shape of a beard plate is fixedly connected to the bottom of the connecting column 42. The arc convex surface sides of the scraping plate 43 respectively slide on the pipe walls of the first pipe body 31 and the second pipe body 32.

[0043] See Figure 7 , an elastic driving member is provided on the support column 41. The elastic driving member is a driving spring 412. The driving spring 412 is installed in the sliding groove 411. One end of the driving spring 412 abuts against the connecting column 42, and the other end is fixed to the groove wall of the sliding groove 411 close to the rotating shaft 4 side. When in use, the driving spring 412 elastically releases and pushes the connecting column 42 in a direction away from the rotating shaft 4. A guiding member is provided on the first pipe body 31. The guiding member is a guiding column 33. The guiding column 33 is fixed on the pipe wall of the first pipe body 31. The extending direction of the guiding column 33 is parallel to the central axis of the first pipe body 31. Both ends of the guiding column 33 respectively protrude outside the water inlet hole 23. A guiding groove 431 is formed on the side of the scraping plate 43 away from the connecting column 42, and the guiding groove 431 is located directly below the connecting column 42. When in use, the guiding column 33 slides in the guiding groove 431 to guide the sliding track of the scraping plate 43, and at the same time can support the scraping plate 43 to reduce the possibility of the connecting column 42 disengaging from the sliding groove 411.

[0044] See Figure 5 and Figure 7, in the initial state, the support column 41 is flipped to protrude into the downcomer 2 away from the side of the rotating shaft 4. At this time, the driving spring 412 pushes the connecting column 42 so that the scraping plate 43 slides out of the water inlet hole 23. At this time, the scraping plate 43 is restricted by the guiding column 33 and aligned with the second pipe body 32. When the rotating shaft 4 rotates to make the support column 41 flip towards the other orifice of the water inlet hole 23, at this time, the support column 41 drives the scraping plate 43 to slide into the connecting pipe 3; when the support column 41 slides from the second pipe body 32 near the central axis of the downcomer 2 to the first pipe body 31 and makes the central axis of the support column 41 perpendicular to the central axis of the first pipe body 31, the connecting column 42 compresses the driving spring 412; when the support column 41 flips to the outside of the orifice on the side of the water inlet hole 23 away from the central axis of the downcomer 2, the driving spring 412 elastically releases and pushes the connecting column 42 to slide, so that the scraping plate 43 slides out of the connecting pipe 3 in a direction away from the central axis of the downcomer 2. When the scraping plate 43 slides on the connecting pipe 3, the residual soil on the wall of the connecting pipe 3 is scraped off.

[0045] See Figure 5 and Figure 6 , the downcomer 2 is provided with a plurality of driving grooves 27 that penetrate upward to the outside of the downcomer 2, and the driving grooves 27 are respectively communicated with the accommodating grooves 231 on the same vertical line. The downcomer 2 is provided with driving columns 5, and the driving columns 5 correspond to the driving grooves 27 one by one and slide up and down in the driving grooves 27.

[0046] See Figure 6 and Figure 7The downcomer 2 is provided with a driving assembly 6. When the driving column 5 slides downward, the driving assembly 6 drives the rotating shaft 4 to reciprocate and reverse, so that the support column 41 reciprocates and flips at the openings on both sides of the connecting pipe 3. The driving assembly 6 includes a driving block 61, a driving bar 62, and a driving coil spring 63. The driving coil spring 63 is sleeved on the outer peripheral side of the rotating roller 44. One end of the driving coil spring 63 is clamped on the outer peripheral side of the rotating roller 44, and the other end is clamped on the groove wall of the rotating groove 312. When the support column 41 flips from the side close to the central axis of the downcomer 2 to the side away from the central axis of the downcomer 2, the driving coil spring 63 enters a contracted state. The driving bar 62 is fixed to the outer peripheral side of the rotating shaft 4, and the driving bar 62 is spirally arranged upward. The driving block 61 is a hemispherical block structure and is evenly spaced and fixed to the side of the driving column 5 facing the rotating shaft 4. Before the driving column 5 moves downward, the driving block 61 is aligned with the position of the driving bar 62 near the top. When the driving column 5 slides downward, the arc-shaped convex side of the driving block 61 slides on the upward side of the driving bar 62. At this time, the driving block 61 drives the rotating shaft 4 to rotate through the driving bar 62, so that the support column 41 flips from the side close to the central axis of the downcomer 2 to the side away from the central axis of the downcomer 2. When the driving block 61 is separated from the driving bar 62 and the previous adjacent driving block 61 does not slide on the driving bar 62, the driving coil spring 63 is elastically released, driving the rotating shaft 4 to rotate, so that the support column 41 flips from the side away from the central axis of the downcomer 2 to the side close to the central axis of the downcomer 2, and the process is repeated after the previous adjacent driving block 61 slides on the driving bar 62. When the driving column 5 moves upward, the driving block 61 slides on the driving bar 62 near the top position and to the downward side. At this time, the driving block 61 drives the rotating shaft 4 to flip through the driving bar 62, so that the supporting column 41 is further close to the central axis of the downcomer 2, until the driving block 61 is separated from the driving bar 62 and drives the coil spring 63 to drive the rotating shaft 4 to reverse back to the initial state.

[0047] See also Figure 3 In order to enable the driving column 5 to move up and down at the same time, a linkage bar 8 is fixedly connected to the top of the driving column 5. When in use, all the driving columns 5 can be driven to move up and down at the same time by toggling the linkage bar 8, thereby reducing the complexity of operation.

[0048] See also Figure 8 and Figure 9 The downcomer 2 is provided with a control assembly 7. When the driving column 5 moves up and down, the control assembly 7 controls the second pipe body 32 to rotate. The control assembly 7 includes a control gear 71 and a control rack 72. The water inlet 23 (the water inlet 23 is Figure 5A control groove is provided in the circumferential side wall of the circumferential side hole along the circumferential direction. The control groove corresponds to the second pipe body 32 one by one and is communicated with the driving groove 27. The control gear 71 corresponds to the second pipe body 32 one by one and is sleeved and fixed on the outer circumferential side of the second pipe body 32. The control gear 71 is rotatably connected in the driving groove 27 and protrudes into the driving groove 27. The control rack 72 corresponds to the control gear 71 one by one and is respectively fixed on the vertical side walls on the opposite sides of the driving column 5. The control rack 72 slides in the driving groove 27, and the control rack 72 meshes with the control gear 71. When the driving column 5 drives the control rack 72 to slide up and down, the control rack 72 drives the second pipe body 32 to rotate through the control gear 71, which is beneficial to increasing the range of the second pipe body 32 being scraped by the scraper 43.

[0049] The implementation principle of a precipitation well structure in an embodiment of the present application is as follows:

[0050] When it is necessary to clear the deposited soil in the connecting pipe 3, the driving column 5 is driven downward to slide, so that the rotating shaft 4 and the second pipe body 32 rotate, driving the scraper 43 to slide, and scraping the deposited soil in the connecting pipe 3, increasing the size of the orifice through which the connecting pipe 3 can supply water flow.

[0051] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A precipitation well structure, comprising a drain pipe (2) inserted into the soil, a water extraction pipe (21) inserted into the drain pipe (2), and a water extraction part (22) communicated with the water extraction pipe (21). Water inlet holes (23) are evenly spaced on the circumferential side wall of the drain pipe (2). A filter layer (24) is arranged on the circumferential side of the drain pipe (2). A sealing layer (25) is arranged on the circumferential side of the drain pipe (2) above the filter layer (24). A plugging block (26) for closing the pipe orifice of the drain pipe (2) is arranged on the circumferential side of the water extraction pipe (21), and is characterized in that: The downcomer (2) is provided with a connecting pipe (3). The connecting pipes (3) correspond to the water inlet holes (23) one by one and are installed in the water inlet holes (23). The connecting pipe (3) is rotatably connected with a rotating shaft (4). The central axis of the rotating shaft (4) is parallel to the central axis of the downcomer (2). A support column (41) located inside the connecting pipe (3) is arranged on the circumferential side wall of the rotating shaft (4). One side of the support column (41) away from the rotating shaft (4) can be flipped outside the connecting pipe (3). The bottom of the support column (41) is slidably connected with a connecting column (42). The connecting column (42) slides along the extending direction of the support column (41) and the connecting column (42) is rotatably connected with the support column (41). A scraping plate (43) for cleaning the bottom pipe wall of the connecting pipe (3) is arranged at the bottom of the connecting column (42). An elastic driving member for driving the connecting column (42) to slide away from the rotating shaft (4) is arranged on the support column (41). A guiding member for guiding the scraping plate (43) to slide along the central axis direction of the connecting pipe (3) is arranged on the connecting pipe (3). A plurality of driving columns (5) slide up and down on the downcomer (2). The driving columns (5) are parallel to the rotating shaft (4) and each group of driving columns (5) corresponds to the rotating shaft (4) in the same vertical direction. The downcomer (2) is provided with a driving assembly (6) for driving the support column (41) to reciprocally flip towards the two side pipe orifices of the connecting pipe (3) when the driving column (5) slides downwards; The guiding member is a guiding column (33). The guiding column (33) is arranged on the inner wall of the connecting pipe (3). Both ends of the guiding column (33) extend along the central axis direction of the connecting pipe (3) to the outside of the connecting pipe (3). A guiding groove (431) located directly below the connecting column (42) is formed on the side of the scraping plate (43) facing away from the connecting column (42). The guiding column (33) slides in the guiding groove (431); The connecting pipe (3) includes a first pipe body (31) and a second pipe body (32). The second pipe bodies (32) are symmetrically arranged and are respectively located at both ends of the first pipe body (31). The first pipe body (31) is fixed to the hole wall of the water inlet hole (23). The guiding column (33) is fixed to the first pipe body (31). The second pipe bodies (32) are respectively rotatably connected with the first pipe body (31) and the hole wall of the water inlet hole (23). The downcomer (2) is provided with a control assembly (7) for controlling the rotation of the second pipe body (32) when the driving column (5) moves up and down.

2. The precipitation well structure according to claim 1, characterized in that: The driving assembly (6) includes a driving block (61), a driving strip (62), and a driving coil spring (63). The driving coil spring (63) is arranged in the connecting pipe (3). One end of the driving coil spring (63) is clamped to the rotating shaft (4), and the other end is clamped to the connecting pipe (3). The driving strip (62) is arranged on the outer peripheral side of the rotating shaft (4) and extends spirally upward. There are multiple driving blocks (61) which are arranged at intervals up and down on the driving column (5). When the driving column (5) slides downward, the driving block (61) slides on the side of the driving strip (62) facing the nozzle direction of the downcomer (2). When the driving block (61) slides on the side of the driving strip (62) facing the nozzle direction of the downcomer (2), the support column (41) flips from inside the downcomer (2) to outside the downcomer (2).

3. The precipitation well structure according to claim 2, characterized in that: The driving block (61) has a hemispherical block structure.

4. A precipitation well structure according to claim 1, characterized in that: The elastic driving member is a driving spring (412). A sliding groove (411) is formed at the bottom of the support column (41). The connecting column (42) slides in the sliding groove (411). One end of the driving spring (412) abuts against the connecting column (42), and the other end is fixed to the side of the sliding groove (411) close to the rotating shaft (4).

5. A precipitation well structure according to claim 4, characterized in that: When the connecting column (42) slides to abut against the groove wall of the sliding groove (411) far from the rotating shaft (4), the guiding column (33) is located in the guiding groove (431).

6. The precipitation well structure according to claim 1, wherein: The control assembly (7) includes a control rack (72) and a control gear (71). The control gear (71) corresponds to the second pipe body (32) one by one and is sleeved on the outer peripheral side of the second pipe body (32). The control racks (72) are symmetrically arranged on the vertical side walls on the opposite sides of the driving column (5). The control racks (72) slide up and down in the downcomer (2), and the control racks (72) are meshed with the control gear (71).

7. A precipitation well structure according to claim 6, characterized in that: A linkage bar (8) for linking adjacent driving columns (5) is arranged at the top of the driving column (5).

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