CN215562406U - Water conservancy dam body drainage structures - Google Patents

Abstract

The application discloses water conservancy dam body drainage structures belongs to hydraulic engineering's technical field, and it includes that vertical this internal inlet tube of dam, slope of wearing to locate this internal and with the drain pipe that the inlet tube is linked together, the water catch bowl has been seted up on the dam body, the inlet tube with the interior bottom surface of water catch bowl is linked together, the drain pipe is kept away from the dam body is extended to the one end of inlet tube, be provided with filter assembly in the drain pipe, filter assembly include installing frame and fixed mounting in filter screen in the installing frame, this internal being provided with of dam is used for the drive the elevating assembly that the installing frame moved in vertical direction. This application has the effect that prevents the pipeline jam in the dam body, guarantees the drainage efficiency of drain pipe.

Description

Water conservancy dam body drainage structures

Technical Field

The application relates to the technical field of hydraulic engineering, in particular to a water conservancy dam body drainage structure.

Background

A dam is a water retaining structure which intercepts water flow of river channels to raise the water level or adjust the flow. In order to ensure the structural strength of the dam body, constructors need to discharge water permeating into the dam body, and the constructors can achieve the purpose by arranging a drainage mechanism in the dam body.

In the related art, chinese utility model patent with publication number CN213709417U discloses a dam body drainage structure of a water conservancy homogeneous earth dam, which comprises a primary drainage pipe and a collection pipe arranged in the dam, wherein the primary drainage pipe is vertically arranged and close to the inner side of the upstream face of the dam, and a plurality of drainage holes are arranged on the primary drainage pipe; the collector pipe level sets up, the collector pipe and the interval between the dam bottom surface be greater than the liquid level height of dam surface of a river, collector pipe one end intercommunication is close to the one end of dam bottom surface in the one-level drain pipe, and the collector pipe is kept away from the one end of one-level drain pipe extends the surface of a river of dam.

Aiming at the related technologies, the inventor thinks that no filtering structure is arranged in the drain pipe and the water collecting pipe, foreign matters such as silt in the dam are easy to deposit in the drain pipe and the water collecting pipe, so that the pipeline is blocked, and the subsequent dam body drainage is influenced.

SUMMERY OF THE UTILITY MODEL

In order to prevent that this internal pipeline of dam from blockking up, guarantee the drainage efficiency of drain pipe, this application provides a water conservancy dam body drainage structure.

The application provides a water conservancy dam body drainage structures adopts following technical scheme:

the utility model provides a water conservancy dam body drainage structures, includes that vertical this internal inlet tube of dam, slope of wearing to locate this internal and with the drain pipe that the inlet tube is linked together of dam, the water catch bowl has been seted up on the dam body, the inlet tube with the interior bottom surface of water catch bowl is linked together, the drain pipe is kept away from the dam body is extended to the one end of inlet tube, be provided with filter assembly in the drain pipe, filter assembly include installing frame and fixed mounting in filter screen in the installing frame, this internal being provided with of dam is used for the drive the elevating assembly that the installing frame moved in vertical direction.

Through adopting above-mentioned technical scheme, water on the dam body is collected by the water catch bowl earlier, and water in the water catch bowl is through the inlet tube in proper order, discharge dam body behind the drain pipe, and the setting of filter frame makes things convenient for operating personnel to install the filter screen, and being provided with of filter screen does benefit to filter great debris in the rainwater, and then prevents that this internal pipeline of dam from being blockked up by debris, and lifting unit's setting does benefit to operating personnel and takes out filter assembly and clear up filter assembly, and then guarantees the drainage efficiency of inlet tube and drain pipe.

Preferably, the filter screen is hemispherical, fixed cover is equipped with fixed frame on the outer peripheral face of filter screen, be provided with in the installing frame and be used for fixing the installation component of fixed frame.

By adopting the technical scheme, after the hemispherical filter screen filters out the sundries in the water, the sundries slide onto the fixing frame along the outer peripheral surface of the filter screen under the action of gravity, so that the filter screen is prevented from being blocked by the sundries; the installation component is convenient for operators to install the filter screen on the installation frame.

Preferably, the installation component comprises an insertion block fixedly connected to the fixed frame and a limiting block slidably arranged in the installation frame, the insertion block is provided with a limiting groove for insertion and matching with the limiting block, the limiting block is fixedly connected with a moving rod, the installation frame is provided with an insertion groove for sliding and matching with the insertion block, the inner side wall of the insertion groove is provided with a guide groove for sliding and matching with the limiting block, and the inner side wall of the guide groove is provided with a moving through hole for sliding and matching with the moving rod.

Through adopting above-mentioned technical scheme, operating personnel pulls the carriage release lever along the shift through-hole, the carriage release lever drives the stopper and removes to the direction of keeping away from the inserting groove, operating personnel aligns the inserting groove with the grafting piece again, when operating personnel pushes down fixed frame and makes the inserting piece insert the inserting groove completely, operating personnel pulls the carriage release lever again, the carriage release lever drives the stopper and removes and insert the spacing inslot until the stopper, stopper and spacing groove grafting cooperation make can dismantle between fixed frame and the installing frame and be connected, thereby make things convenient for operating personnel to wash or change the filter screen.

Preferably, the limiting block is far away from a first spring fixedly connected to the end part of the insertion block, the end part of the limiting block, far away from the first spring, is fixedly connected to the inner bottom surface of the guide groove, and the mounting frame is hinged to a limiting rod used for blocking the moving rod to move.

Through adopting above-mentioned technical scheme, operating personnel is to the direction pulling carriage release lever of keeping away from the inserting groove, first spring is in compression state this moment, operating personnel utilizes gag lever post restriction carriage release lever to remove under the elastic force effect of first spring, insert the inserting inslot back when operating personnel with the grafting piece, operating personnel removes and to the injecing of carriage release lever, the stopper inserts the spacing inslot under the effect of the elastic force of first spring, being provided with of first spring does benefit to the stability that improves the installation component locking, prevent that the stopper from breaking away from the spacing groove easily, the setting of gag lever post is favorable to avoiding operating personnel to spur the carriage release lever always, thereby make the installation of filter screen convenient and fast more.

Preferably, the outer side wall of the mounting frame is fixedly connected with a sliding block, the inner side wall of the drain pipe is provided with a sliding groove which is matched with the sliding block in a sliding manner, the lifting assembly comprises a screw rod which is arranged on the sliding block in a penetrating manner and is in threaded fit with the sliding block and a rotating wheel which is fixedly connected to the screw rod, and the screw rod is rotatably connected with the inner end face of the sliding groove.

Through adopting above-mentioned technical scheme, operating personnel rotates the runner, and the runner rotates and drives the lead screw rotation, and the lead screw rotates and makes the slider remove in the vertical direction to make things convenient for operating personnel to control filter assembly's height.

Preferably, the dam body is provided with a limiting assembly, the limiting assembly comprises a positioning block fixedly connected to the dam body, a positioning rod penetrating through the positioning block, a fixed disc fixedly connected to the positioning rod and a second spring sleeved on the positioning rod, one end of the second spring is abutted against the positioning block, and the other end of the second spring is fixedly connected with the fixed disc; the screw rod is fixedly sleeved with a limiting disc, and the limiting disc is provided with a plurality of positioning holes for being in plug-in fit with the positioning rods.

Through adopting above-mentioned technical scheme, operating personnel pulling fixed disk makes the locating lever break away from the locating hole, and operating personnel rotates the runner again and utilizes lead screw drive installing frame to reach suitable position, and at this moment, the second spring is in compression state, then operating personnel loosens the fixed disk, and the fixed disk removes under the elastic force of second spring, and the fixed disk removes and drives the locating lever and remove until the locating lever inserts the locating hole once more to the restriction lead screw continues to rotate.

Preferably, the positioning rod comprises a smooth section fixedly connected with the fixed disk and a thread section fixedly connected to the smooth section and used for being in thread fit with the positioning block.

Through adopting above-mentioned technical scheme, operating personnel pulling fixed disk until the screw thread section contacts the locating piece, and operating personnel rotates the fixed disk, and the fixed disk rotates and makes screw thread section and locating piece screw-thread fit, and then the position of locking locating lever prevents that the locating lever from removing under the elastic force effect of second spring.

Preferably, the outer peripheral surface of the water inlet pipe is communicated with a plurality of collecting pipes, one ends, far away from the water inlet pipe, of the collecting pipes are arranged in an upward inclined mode, and water permeable holes are formed in the collecting pipes.

Through adopting above-mentioned technical scheme, collecting pipe and the hole of permeating water be provided with and do benefit to and collect this internal moisture of infiltration dam, and the water that gets into in the collecting pipe gets into the inlet pipe along the incline direction of collecting pipe, finally discharges from the drain pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

the water in the water collecting tank is discharged out of the dam body after sequentially passing through the water inlet pipe and the water discharge pipe, the filter screen is arranged to facilitate filtering of large sundries in rainwater, and further prevent the pipeline in the dam body from being blocked by the sundries, and the lifting assembly is arranged to facilitate an operator to take out and clean the filter assembly, so that the water discharge efficiency of the water inlet pipe and the water discharge pipe is ensured;

when an operator presses the fixed frame downwards to enable the insertion block to be completely inserted into the insertion groove, the operator pulls the moving rod, the moving rod drives the limiting block to move until the limiting block is inserted into the limiting groove, and the limiting block is in insertion fit with the limiting groove to enable the fixed frame to be detachably connected with the mounting frame, so that the operator can conveniently clean or replace the filter screen;

the runner rotates and drives the lead screw to rotate, and the lead screw rotates and makes the slider move in the vertical direction to make things convenient for operating personnel to control filter assembly's height.

Drawings

Fig. 1 is a schematic structural diagram of a water conservancy dam body drainage structure of the embodiment of the application.

Fig. 2 is a schematic view of an internal structure of a dam body according to an embodiment of the present invention.

Fig. 3 is a schematic view of the internal structure of the water inlet pipe according to the embodiment of the present application.

Fig. 4 is an enlarged schematic view at a in fig. 3.

Fig. 5 is an enlarged schematic view at B in fig. 3.

Description of reference numerals:

1. a dam body; 11. a water collection tank; 12. a cover plate; 121. passing through a water tank; 2. a water inlet pipe; 21. a collection pipe; 211. water permeable holes; 22. a chute; 3. a drain pipe; 4. a filter assembly; 41. installing a frame; 411. inserting grooves; 412. a guide groove; 413. moving the through hole; 414. a limiting rod; 415. a slider; 416. a circular hole; 42. a filter screen; 43. a fixing frame; 5. mounting the component; 51. an insertion block; 511. a limiting groove; 52. a limiting block; 521. a first spring; 522. a travel bar; 6. a lifting assembly; 61. a screw rod; 611. positioning a plate; 612. positioning holes; 62. a rotating wheel; 7. a restraining component; 71. positioning blocks; 72. positioning a rod; 721. a smooth section; 722. a threaded segment; 73. fixing the disc; 74. a second spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses water conservancy dam body drainage structures. Referring to fig. 1 and 2, the water conservancy dam body drainage structure comprises a water inlet pipe 2 and a drain pipe 3 which are arranged in the dam body 1 in a penetrating mode.

Referring to fig. 1 and 2, a water collection tank 11 is formed in the upper surface of the dam body 1, the cross section of the water collection tank 11 is rectangular, and the length direction of the water collection tank 11 is consistent with the length direction of the dam body 1. The inner side wall of the water collecting tank 11 is provided with a cover plate 12, and the upper surface of the cover plate 12 is uniformly provided with a plurality of water passing grooves 121 for water flow to pass through along the length direction of the cover plate 12.

Referring to fig. 2 and 3, the water inlet pipe 2 is vertically arranged, the upper end of the water inlet pipe 2 is communicated with the inner bottom surface of the water collecting tank 11, the lower end of the water inlet pipe 2 is communicated with the water discharging pipe 3, the water discharging pipe 3 is arranged in a manner of downwards inclining away from one end of the water inlet pipe 2, and the end part of the water discharging pipe 3 away from the water inlet pipe 2 extends out of the back water surface of the dam body 1. The inlet tube 2 is provided with a plurality ofly, and a plurality of inlet tubes 2 are evenly arranged along the length direction of dam body 1.

Referring to fig. 2 and 3, a collecting pipe 21 is disposed on the outer circumferential surface of the water inlet pipe 2, the collecting pipe 21 is embedded in the dam body 1, one end of the collecting pipe 21 is communicated with the water inlet pipe 2, and the other end of the collecting pipe 21 is arranged to be inclined upward. A plurality of holes 211 of permeating water have evenly been seted up along its length direction on the outer peripheral face of collecting pipe 21, and the moisture in the convenient infiltration dam body 1 of setting of the hole 211 of permeating water gets into in the inlet tube 2 from the hole 211 of permeating water. The inlet pipe 2 is provided in plural, and the plural inlet pipes 2 are uniformly arranged along the length direction of the collecting pipe 21.

Referring to fig. 3 and 4, a filter assembly 4 is arranged in the water inlet pipe 2, the filter assembly 4 includes a mounting frame 41 and a filter screen 42, the mounting frame 41 is in a circular frame shape, and the outer side wall of the mounting frame 41 is in sliding fit with the inner side wall of the water inlet pipe 2. A circular hole 416 is formed in the inner bottom surface of the mounting frame 41. The filter screen 42 is hemispherical, the axis of the filter screen 42 coincides with the axis of the circular hole 416, and after the water entering the water inlet pipe 2 is filtered by the filter screen 42, the water passes through the circular hole 416 and finally enters the water outlet pipe 3. The outer peripheral surface of the filter screen 42 is sleeved with a fixing frame 43, the fixing frame 43 is fixedly connected with the filter screen 42, and the bottom surface of the fixing frame 43 is abutted with the inner bottom surface of the mounting frame 41.

Referring to fig. 3 and 4, the mounting assembly 5 is disposed in the mounting frame 41, the mounting assembly 5 includes an insertion block 51 and a limiting block 52, one end of the insertion block 51 is fixedly connected to the bottom surface of the fixed frame 43, and an inclined surface is disposed at one end of the insertion block 51 away from the bottom surface of the fixed frame 43. The insertion blocks 51 are provided in two, and the two insertion blocks 51 are arranged symmetrically with respect to the axis of the filter net 42. The inner bottom surface of the mounting frame 41 is provided with a plug slot 411, the cross section of the plug slot 411 is rectangular, and the inner side wall of the plug slot 411 is in sliding fit with the plug block 51. The number of the inserting slots 411 is two, and the two inserting slots 411 correspond to the two inserting blocks 51 one by one.

Referring to fig. 3 and 4, a guide groove 412 is formed on an inner side wall of the insertion groove 411, a cross section of the guide groove 412 is rectangular, and the limiting block 52 is in sliding fit with the inner side wall of the guide groove 412. The end of the limiting block 52 close to the insertion slot 411 is provided with an inclined surface, the limiting block 52 is matched with the inclined surface of the insertion block 51 close to each other, and the side of the insertion block 51 close to the limiting block 52 is provided with a limiting slot 511 for insertion fit with the limiting block 52. The end of the limiting block 52 far away from the inserting slot 411 is provided with a first spring 521, one end of the first spring 521 is fixedly connected with the limiting block 52, and the other end of the first spring 521 is fixedly connected with the inner bottom surface of the guide slot 412.

Referring to fig. 3 and 4, a moving through hole 413 is formed on an inner top surface of the guide groove 412, a longitudinal direction of the moving through hole 413 is identical to a longitudinal direction of the guide groove 412, and the moving through hole 413 communicates with an upper surface of the mounting frame 41. The upper surface of the limiting block 52 is fixedly connected with a moving rod 522, one end of the moving rod 522, which is far away from the limiting block 52, extends out of the moving through hole 413, and the moving rod 522 is in sliding fit with the inner side wall of the moving through hole 413. The upper surface of the mounting frame 41 is provided with a limiting rod 414, one end of the limiting rod 414 is hinged to the mounting frame 41, and the other end of the limiting rod 414 can be abutted to the movable rod 522. An operator inserts the insertion block 51 into the insertion slot 411, the inclined surface of the insertion block 51 abuts against the inclined surface of the limiting block 52, the operator continues to press the fixing frame 43 downwards, the limiting block 52 is pushed by the insertion block 51, the first spring 521 is in a compressed state, and when the limiting block 52 aligns at the limiting slot 511, the limiting block 52 is inserted into the limiting slot 511 under the action of the first spring 521. When the operator wants to detach the fixing frame 43, the operator pulls the moving rod 522 in a direction away from the insertion slot 411, the moving rod 522 moves to drive the limiting block 52 to move, and at this time, the first spring 521 is in a compressed state. Then, the operator rotates the limiting rod 414, so that the limiting rod 414 abuts against the side surface of the movable rod 522 close to the filter screen 42, and the limiting rod 414 is disposed to prevent the limiting block 52 from moving under the action of the first spring 521.

Referring to fig. 4 and 5, two sliding blocks 415 are fixedly connected to the outer side surface of the mounting frame 41, and the two sliding blocks 415 are symmetrically arranged about the axis of the mounting frame 41. Two chutes 22 symmetrically arranged are formed in the inner side wall of the water inlet pipe 2, the inner side wall of each chute 22 is in sliding fit with the corresponding sliding block 415, and the two chutes 22 correspond to the two sliding blocks 415 one to one. The lifting assembly 6 comprises a screw rod 61 and a rotating wheel 62, the screw rod 61 is vertically arranged, the screw rod 61 is arranged in the water inlet pipe 2 in a penetrating mode, the bottom of the screw rod 61 is rotatably connected with the inner end face of the sliding groove 22, the other end of the screw rod 61 extends out of the water inlet pipe 2, and the screw rod 61 is rotatably connected with the water inlet pipe 2. And the screw rod 61 is arranged in one sliding block 415 in a penetrating way, and the screw rod 61 is in threaded fit with the sliding block 415. The rotating wheel 62 is arranged at the end part of the screw rod 61 extending out of the water inlet pipe 2, and the rotating wheel 62 is fixedly connected with the screw rod 61.

Referring to fig. 3 and 5, the restricting unit 7 is disposed on the inner bottom surface of the water collecting tub 11, and the restricting unit 7 includes a positioning block 71, a positioning rod 72, a fixing plate 73, and a second spring 74. The positioning block 71 is vertically arranged, and the bottom surface of the positioning block 71 is fixedly connected with the inner bottom surface of the water collecting tank 11. The positioning rod 72 is horizontally arranged, and the positioning block 71 is arranged in the positioning block 71 in a penetrating manner. The positioning rod 72 includes a smooth section 721 and a threaded section 722 fixedly connected to the smooth section 721, and an axis of the smooth section 721 coincides with an axis of the threaded section 722. Smooth section 721 slides with locating piece 71 and cooperates, and fixed disk 73 sets up in the tip that smooth section 721 keeps away from screw thread section 722, and fixed disk 73 is connected with smooth section 721 fixed, screw thread section 722 and locating piece 71 screw thread cooperation. The second spring 74 is sleeved on the positioning rod 72, one end of the second spring 74 is fixedly connected with the fixed disc 73, and the other end of the second spring 74 is abutted against the positioning block 71.

Referring to fig. 3 and 5, a positioning plate 611 is sleeved on the end of the screw rod 61 extending out of the water inlet pipe 2, the positioning plate 611 is fixedly connected with the screw rod 61, and a positioning hole 612 for inserting and matching with the positioning rod 72 is formed in the outer circumferential surface of the positioning plate 611. The positioning hole 612 is provided in plural, and the plural positioning holes 612 are uniformly arranged around the axis of the positioning plate 611. The operator pulls the fixing plate 73 to separate the positioning rod 72 from the positioning hole 612, at this time, the second spring 74 is in a compressed state, the operator rotates the fixing plate 73, the fixing plate 73 rotates to enable the threaded section 722 to be in threaded fit with the positioning block 71, and the position of the positioning rod 72 is locked. The operator then rotates the wheel 62, the wheel 62 rotates to rotate the lead screw 61, and the lead screw 61 rotates to move the slide 415 in the vertical direction. After the mounting frame 41 reaches the proper position, the operator rotates the fixed disc 73 to make the threaded section 722 disengage from the positioning block 71, the fixed disc 73 moves under the elastic force of the second spring 74, and the fixed disc 73 moves to drive the positioning rod 72 to move until the positioning rod 72 is inserted into the positioning hole 612 again, so that the screw rod 61 is limited to continue rotating.

The implementation principle of a water conservancy dam body drainage structure of the embodiment of the application is as follows: water on the dam body 1 is collected by the water collecting tank 11 first, and water in the water collecting tank 11 is discharged out of the dam body 1 after sequentially passing through the water inlet pipe 2 and the water discharge pipe 3. The water permeating into the dam body 1 enters the collecting pipe 21 through the water permeable holes 211, and the water entering the collecting pipe 21 is discharged through the water inlet pipe 2 and the water discharge pipe 3 in sequence. Filter frame and installation component 5 set up and make things convenient for operating personnel to install and dismantle filter screen 42, and filter screen 42 is provided with and does benefit to filter great debris in the rainwater, and then prevents that the pipeline in dam body 1 from being blockked up by debris. The operator rotates the rotating wheel 62, the rotating wheel 62 rotates to drive the screw rod 61 to rotate, the screw rod 61 drives the mounting frame 41 to move in the vertical direction through the sliding block 415, and the operator can conveniently control the height of the filter assembly 4. Lifting unit 6 be provided with do benefit to operating personnel and take out filter assembly 4 and clear up filter assembly 4, and then guarantee inlet tube 2 and drain pipe 3's drainage efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a water conservancy dam body drainage structures, includes vertical inlet tube (2), the slope of wearing to locate in dam body (1) wear to locate in dam body (1) and with drain pipe (3) that inlet tube (2) are linked together, keep away from drain pipe (3) the one end of inlet tube (2) extends dam body (1), its characterized in that: water catch bowl (11) have been seted up on dam body (1), inlet tube (2) with the interior bottom surface of water catch bowl (11) is linked together, be provided with filtering component (4) in drain pipe (3), filtering component (4) including installing frame (41) and fixed mounting in filter screen (42) in installing frame (41), be provided with in dam body (1) and be used for the drive installing frame (41) lifting unit (6) that move in vertical direction.

2. The water conservancy dam body drainage structure of claim 1, wherein: the filter screen (42) are hemispherical, fixed cover is equipped with fixed frame (43) on the outer peripheral face of filter screen (42), be provided with in installing frame (41) and be used for fixing installing component (5) of fixed frame (43).

3. The water conservancy dam body drainage structure of claim 2, wherein: the mounting assembly (5) comprises an insertion block (51) fixedly connected to the fixed frame (43) and a limiting block (52) slidably arranged in the mounting frame (41), the insertion block (51) is provided with a limiting groove (511) used for being in insertion fit with the limiting block (52), the limiting block (52) is provided with a moving rod (522) fixedly connected with the mounting frame, the mounting frame (41) is provided with an insertion groove (411) used for being in sliding fit with the insertion block (51), the inner side wall of the insertion groove (411) is provided with a guide groove (412) used for being in sliding fit with the limiting block (52), and the inner side wall of the guide groove (412) is provided with a moving through hole (413) used for being in sliding fit with the moving rod (522).

4. The water conservancy dam body drainage structure of claim 3, wherein: the end part, far away from the plug-in block (51), of the limiting block (52) is fixedly connected with a first spring (521), the end part, far away from the limiting block (52), of the first spring (521) is fixedly connected with the inner bottom surface of the guide groove (412), and the mounting frame (41) is hinged to a limiting rod (414) used for blocking the moving rod (522) from moving.

5. The water conservancy dam body drainage structure of claim 1, wherein: fixedly connected with slider (415) on the lateral wall of installing frame (41), seted up on the inside wall of drain pipe (3) be used for with slider (415) sliding fit's spout (22), lifting unit (6) including wear to locate on slider (415) and with slider (415) screw-thread fit's lead screw (61) and fixed connection in runner (62) on lead screw (61), lead screw (61) with the interior terminal surface rotation of spout (22) is connected.

6. The water conservancy dam body drainage structure of claim 5, wherein: the dam comprises a dam body (1), and is characterized in that a limiting assembly (7) is arranged on the dam body (1), the limiting assembly (7) comprises a positioning block (71) fixedly connected to the dam body (1), a positioning rod (72) arranged in the positioning block (71) in a penetrating mode, a fixed disc (73) fixedly connected to the positioning rod (72) and a second spring (74) sleeved on the positioning rod (72), one end of the second spring (74) is abutted to the positioning block (71), and the other end of the second spring (74) is fixedly connected with the fixed disc (73); the screw rod (61) is fixedly sleeved with a limiting disc, and the limiting disc is provided with a plurality of positioning holes (612) which are used for being in plug-in fit with the positioning rods (72).

7. The water conservancy dam body drainage structure of claim 6, wherein: the positioning rod (72) comprises a smooth section (721) fixedly connected with the fixed disk (73) and a threaded section (722) fixedly connected to the smooth section (721) and used for being in threaded fit with the positioning block (71).

8. The water conservancy dam body drainage structure of claim 1, wherein: the outer peripheral face of inlet tube (2) goes up the intercommunication and has a plurality of collecting pipes (21), collecting pipe (21) are kept away from the one end tilt up setting of inlet tube (2), the hole of permeating water (211) have been seted up on collecting pipe (21).

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