CN219973900U - Pre-buried type water stop joint of drainage pipeline - Google Patents

Abstract

The utility model discloses a pre-buried water stop joint of a drainage pipeline, which belongs to the field of water stop joints and comprises a water stop main pipe, wherein a pipe cover is arranged above the water stop main pipe, a side liquid draining mechanism is arranged on the side edge of the water stop main pipe, an annular liquid collecting pipe on the side liquid draining mechanism is arranged on the outer side of the water stop main pipe and used for collecting and draining ground liquid, the pipe cover is covered on the top side of the annular liquid collecting pipe, the top side of a rotation stop lever is contacted with the inner wall of the top side of a stop lever fixing notch along with the continuous movement of a rotating disc, at the moment, the rotation stop lever cannot continuously move upwards, the pipe cover can be fixedly arranged on the water stop main pipe through threaded rotation, the top protection and sealing are realized, mortar and sand stone in concrete are not easy to be injected into the water stop main pipe in the concrete pouring process, and the problem that the inner wall of the water stop main pipe is dirty or caking is avoided, and the installation of a subsequent drainage pipeline is affected is avoided.

Description

Pre-buried type water stop joint of drainage pipeline

Technical Field

The utility model relates to a water stop joint, in particular to a pre-buried water stop joint of a drainage pipeline.

Background

The drainage pipe refers to a system formed by a pipe canal for collecting and discharging sewage, wastewater and rainwater and auxiliary facilities thereof, and comprises a main pipe, a branch pipe and a pipeline leading to a treatment plant, wherein the pipeline is built on a street or elsewhere, and is used for statistics of drainage pipelines, and in the construction of drainage pipelines of high-rise buildings, the water-stop joint is buried in the building concrete pouring process, and the problem of pipeline leakage caused by the adoption of the traditional sleeve pre-burying and pipe filling processes after hole reservation is avoided through the arrangement of the water-stop joint.

In the prior art, according to Chinese patent, the patent with the application number of CN202020801668.7 discloses a pre-buried water stop joint of a drainage pipeline of a high-rise building, and the working principle is as follows: the pipe joint is arranged on the building template and is poured with concrete, the lower pipe joint and the connecting pipe in the pipe joint are integrated with the concrete, the cracking phenomenon is not easy to occur, the tightness of the pipe joint is improved, water enters the containing groove between the conical water guide pipe and the top opening pipe through the upper pipe joint, water enters the liquid drain containing channel from the flow blocking containing channel along with the rising of the liquid level and flows into the lower pipe joint, after the water is discharged, the flow blocking containing channel and the conical water guide pipe form a U-shaped communicating vessel, so that a part of water can remain, the pipe plays a role of blocking peculiar smell, bad smell, bacteria and the like in the pipe cannot return to a room, accumulated water generated in the later period in a room can enter the lower pipe joint through the liquid flow communicating cavity formed in the liquid drain plate, the phenomenon that the water in the room is permeated by the water liquid is avoided, the water leakage and the like around the pre-buried water stop joint is convenient to use for a long time.

The stagnant water festival is along with concrete placement in the use, and the stagnant water festival is upper and lower open-ended pipeline generally, places at floor intermediate position, building concrete around, when pouring concrete, mortar and grit in the concrete can splash into the stagnant water festival, and the pipeline of stagnant water festival is thinner, and concrete mortar and abrasive paper after splashing into are difficult to be cleared up, and is comparatively inconvenient when later installation drainage pipeline, and the pipeline is difficult to install and gets into, causes drainage effect to receive the influence, and for this reason proposes a pre-buried stagnant water festival of drainage pipeline.

Disclosure of Invention

The utility model aims to provide a pre-buried water stop joint of a drainage pipeline, wherein a pipe cover is arranged on a water stop main pipe, so that the top of the water stop main pipe and an annular liquid collecting pipe can be protected from the upper part, and the problems that mortar and sand Dan Jianru are generated in the concrete pouring process and the water stop main pipe is polluted are avoided.

The technical aim of the utility model is realized by the following technical scheme: a drain pipe pre-buried water stop, comprising:

the water stopping main pipe is provided with a pipe cover above, the side edge of the water stopping main pipe is provided with a side edge liquid discharging mechanism, an annular liquid collecting pipe on the side edge liquid discharging mechanism is arranged on the outer side of the water stopping main pipe for collecting and discharging ground liquid, and the pipe cover covers the top side of the annular liquid collecting pipe;

the cover plate lifting fixing mechanism comprises a threaded rotating rod which is arranged on the pipe cover in a threaded manner, a moving block is rotatably arranged at the bottom end of the threaded rotating rod, rotating stop rods are rotatably arranged at two sides of the moving block, two stop rod fixing notches are formed in the inner wall of the water stop main pipe, and the two rotating stop rods are movably arranged in the two stop rod fixing notches respectively;

the stable connecting mechanism comprises a plurality of fixing plates fixedly arranged on the outer side of the water stop main pipe, and a plurality of fixing holes are formed in the top sides of the fixing plates.

Preferably, the screw hole has been seted up to the topside of tube cap, and the top screw thread of screw thread bull stick runs through the screw hole to fixed mounting has the rolling disc, the equal fixed mounting in both sides of movable block has the rolling seat, and two rotation pin rotate respectively and install on two rolling seats, and the downside of rotation pin flushes with the downside of movable block, and the topside of rotation pin is fixed mounting has the one end of extrusion spring, and the other end fixed mounting of extrusion spring is on one side of movable block, the downside fixed mounting of movable block has bottom level to prop the layer board, and the both sides of bottom level to prop the layer board are located the below position of two rotation pins respectively, and the topside of bottom level to prop the layer board contacts with the downside of two rotation pins, is equipped with manual pole mechanism of lifting on the rotation pin.

Through adopting above-mentioned technical scheme, through the rotation of rolling disc, can realize movable block and two rotation pin upward movement, after the topside of rotation pin contacts with the topside inner wall of the fixed notch of pin, just can realize the fixed position of tube cap, the tube cap can block the stagnant water and be responsible for, realizes the protection seal at top, in concrete placement in-process, mortar and grit in the concrete will be difficult for injecting into the stagnant water and be responsible for in, avoid making dirty or be responsible for the inner wall caking at the stagnant water, influence the problem of follow-up drainage pipe installation.

Preferably, the manual lifting rod mechanism comprises a moving hole formed in the top side of the rotating blocking rod, a pulling column is movably mounted in the moving hole, two ends of the pulling column are all extended out of the moving hole, a bottom tray and a top tray are fixedly sleeved on the pulling column, the bottom tray and the top tray are respectively located below and above the rotating blocking rod, two pulling column holes are formed in the top side of the pipe cover, the tops of the two pulling columns respectively movably penetrate through the two pulling column holes, and the same lifting ring is fixedly mounted.

Through adopting above-mentioned technical scheme, through the pull ring removal on the manual pole mechanism that lifts, can drive two rotation pin rotations, rotate the pin and break away from the fixed notch of pin to be convenient for take out the tube cap.

Preferably, the annular liquid collecting pipe is provided with a liquid circulation notch, the annular liquid collecting pipe is in a conical barrel structure, a plurality of circulation holes are formed in the inner wall of the water stopping main pipe and are communicated with the liquid circulation notch, and the inner wall of the annular liquid collecting pipe is fixedly provided with a liquid accumulation filter screen which is in an annular structure.

Through adopting above-mentioned technical scheme, the setting of annular liquid collecting pipe, when later stage uses, there is ponding on the concrete floor after pouring, can flow into in the stagnant water is responsible for through annular liquid collecting pipe, discharges.

Preferably, the stable connecting mechanism comprises an annular plate fixedly arranged on the outer side of the water stop main pipe, a plurality of reinforcing rings are fixedly arranged on the top side of the annular plate, and the diameters of the reinforcing rings gradually decrease from outside to inside.

Through adopting above-mentioned technical scheme, through the annular plate on the stable coupling mechanism, the stagnant water that can effectively strengthen the installation is responsible for and is connected firm with the concrete, and the phenomenon that the difficult and concrete of pouring appear separating of stagnant water is responsible for.

Preferably, the stable connecting mechanism comprises a bottom ring, a middle ring and an upper ring which are fixedly arranged on the outer side of the water stop main pipe, and the diameters of the bottom ring, the middle ring and the upper ring are gradually decreased.

Through adopting above-mentioned technical scheme, bottom ring, middle part ring and the upper portion ring that set up to make things convenient for the filling and the pouring of concrete more, after pouring, the stagnant water is responsible for and the connection stability of concrete is strong.

In summary, in the construction of the drainage pipeline of the high-rise building, the pipe cover is placed on the water stop main pipe, the diameter of the pipe cover is wider, the pipe cover is consistent with the diameter of the annular liquid collecting pipe on the side drainage mechanism, the pipe cover can be covered on the top side of the annular liquid collecting pipe, the cover plate lifting fixing mechanism is arranged on the pipe cover, two rotation stop rods on the cover plate lifting fixing mechanism are unfolded into two stop rod fixing notches under the action of the elastic force of the extrusion springs, along with the continuous movement of the rotating disc, the top side of the rotation stop rods are contacted with the top side inner wall of the stop rod fixing notch, at the moment, the rotation stop rods can not move upwards continuously, the pipe cover can be fixedly installed on the water stop main pipe through threaded rotation, the protection sealing of the top is realized, mortar and sand stone in concrete are not easy to be injected into the water stop main pipe in the concrete pouring process, and the problem of pollution or agglomeration on the inner wall of the water stop main pipe is avoided, and the installation of the subsequent drainage pipeline is affected;

according to the utility model, the annular plate on the stable connecting mechanism can be embedded in the poured concrete, and meanwhile, the annular plate is provided with the plurality of reinforcing rings, the plurality of reinforcing rings are outward and inward, the diameters of the reinforcing rings are gradually decreased, the reinforcing rings and the annular plate are arranged, so that the connection between the installed water-stop main pipe and the concrete is effectively enhanced, and the phenomenon that the water-stop main pipe is not easy to separate from the poured concrete is avoided;

the bottom ring, the middle ring and the upper ring on the stable connecting mechanism are embedded in the poured concrete, and the diameters of the bottom ring, the middle ring and the upper ring are decreased progressively, so that the filling and pouring of the concrete are more convenient, and after the pouring, the connection stability of the water-stopping main pipe and the concrete is strong.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of a cross-section of the present utility model;

FIG. 3 is a schematic view of a cover plate lifting and fixing mechanism of the present utility model;

FIG. 4 is a schematic view of the manual lever lifting mechanism of the present utility model;

FIG. 5 is a schematic view of a side drainage mechanism of the present utility model;

FIG. 6 is a schematic view of a stable connection mechanism in embodiment 1 of the present utility model;

fig. 7 is a schematic view of a stable connection mechanism in embodiment 2 of the present utility model.

In the figure: 1. a water stopping main pipe; 2. a tube cover; 3. a side drainage mechanism; 31. a circular liquid collection tube; 32. a liquid flow slot; 33. a liquid accumulation filter screen; 34. a flow hole; 4. the cover plate lifting and fixing mechanism; 41. a moving block; 42. a threaded rotating rod; 43. a threaded hole; 44. a rotating disc; 45. a rotating seat; 46. rotating the stop lever; 47. a stop lever fixing notch; 48. a bottom horizontal supporting plate; 49. extruding a spring; 5. a manual lever lifting mechanism; 51. a moving hole; 52. pulling the column; 53. pulling a column hole; 54. a pull ring is lifted; 55. a bottom tray; 56. a top tray; 6. a stable connection mechanism; 61. an annular plate; 62. a reinforcing ring; 63. a bottom ring; 64. a middle ring; 65. an upper ring; 7. a fixing piece; 8. and a fixing hole.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Example 1:

as shown in fig. 1-2, the stagnant water is responsible for 1, stagnant water is responsible for 1 top is equipped with tube cap 2, the side liquid discharging mechanism 3 is installed to the side that stagnant water was responsible for 1, annular liquid collecting pipe 31 on the side liquid discharging mechanism 3 sets up in the outside that stagnant water was responsible for 1, carry out ground liquid collection and discharge, tube cap 2 lid is on the top side of annular liquid collecting pipe 31, tube cap 2 that sets up can protect stagnant water is responsible for 1 and annular liquid collecting pipe 31 from the top, avoid the concrete mortar of pouring to splash into inside, the apron is carried and is drawn fixed establishment 4, apron is carried and is drawn fixed establishment 4 and includes threaded rotation pole 42 of screw thread installation on tube cap 2, the movable block 41 is installed in the bottom rotation of threaded rotation pole 42, rotation piece 46 is all installed in the both sides of movable block 41, set up two pin fixed slot 47 on the inner wall of stagnant water is responsible for 1, two movable mounting are respectively in two pin fixed slot 47, the apron that sets up is carried and is drawn fixed establishment 4, can make things convenient for tube cap 2 and stagnant water to be responsible for 1 and annular liquid collecting pipe 31 to protect, stable connection mechanism 6 includes the screw-thread of thread 42 is installed in the fixed connection 7 outside the fixed connection of stagnant water is responsible for 1, a plurality of fixed connection 8 of stability is set up with the stability of the side of fixing piece 1.

As shown in fig. 3, screw hole 43 has been seted up to the topside of tube cap 2, screw thread 42's top screw thread runs through screw hole 43, and fixed mounting has rolling disc 44, the equal fixed mounting in both sides of movable block 41 rotates seat 45, two rotation catch bars 46 rotate respectively and install on two rotation seats 45, the bottom side of rotation catch bar 46 flushes with the bottom side of movable block 41, the one end of extrusion spring 49 is fixed to the topside of rotation catch bar 46, the other end fixed mounting of extrusion spring 49 is on one side of movable block 41, the bottom side fixed mounting of movable block 41 has bottom horizontal support board 48, the both sides of bottom horizontal support board 48 are located the below position of two rotation catch bars 46 respectively, the top side of bottom horizontal support board 48 contacts with the bottom side of two rotation catch bars 46, be equipped with manual lift bar mechanism 5 on the rotation catch bar 46, drive screw thread bull stick 42 after the rotation of movable block 44 rotates, and drive movable block 41 and upwards move this moment, along with the continuous removal, the top side and the top side inner wall of catch bar fixed notch 47 contacts, the rotation catch bar 46 will not be able to continue to move upwards, install in the main pipe 1 through rotating the screw thread, can not pour the problem in the water-stop pipe 1, the sealing up concrete is avoided, the water-stop pipe is sealed up, the water-stop pipe is difficult to pour, the problem is realized, and the water-stop pipe is sealed, can be filled in the water-stop pipe is sealed, and the inside the pipe is difficult to be filled.

As shown in fig. 4, the manual lifting rod mechanism 5 includes a moving hole 51 formed on the top side of the rotation stop rod 46, a pulling column 52 is movably mounted in the moving hole 51, two ends of the pulling column 52 extend out of the moving hole 51, a bottom tray 55 and a top tray 56 are fixedly sleeved on the pulling column 52, the bottom tray 55 and the top tray 56 are respectively located below and above the rotation stop rod 46, two pulling column holes 53 are formed on the top side of the tube cover 2, the top ends of the two pulling columns 52 respectively movably penetrate through the two pulling column holes 53, and the same lifting ring 54 is fixedly mounted, after pouring is completed, the tube cover 2 needs to be taken out, the rotating disc 44 is reversely rotated, the moving block 41 can be driven to move downwards, an operator pulls the lifting ring 54 upwards, the two rotation stop rods 46 are rotationally accommodated at the moment, the extrusion spring 49 is in a compressed state, and after the two rotation stop rods 46 are separated from the fixing notch 47, the tube cover 2 can be lifted upwards, and the tube cover 2 is taken out.

As shown in fig. 5, the annular liquid collecting pipe 31 is provided with a liquid circulation notch 32, the annular liquid collecting pipe 31 is arranged in a cone-shaped barrel structure, the inner wall of the water stopping main pipe 1 is provided with a plurality of circulation holes 34, the plurality of circulation holes 34 are communicated with the liquid circulation notch 32, the inner wall of the annular liquid collecting pipe 31 is fixedly provided with a liquid collecting screen 33, the liquid collecting screen 33 is arranged in an annular structure, the annular liquid collecting pipe 31 is arranged, accumulated water is on the concrete ground after pouring during later use, and the accumulated water can flow into the water stopping main pipe 1 through the annular liquid collecting pipe 31 to be discharged.

As shown in fig. 6, the stable connection mechanism 6 comprises an annular plate 61 fixedly installed on the outer side of the water-stop main pipe 1, a plurality of reinforcing rings 62 are fixedly installed on the top side of the annular plate 61, the diameters of the reinforcing rings 62 gradually decrease from outside to inside, the reinforcing rings 62 and the annular plate 61 are arranged, the water-stop main pipe 1 can be effectively reinforced and firmly connected with concrete, and the water-stop main pipe 1 is not easy to separate from the poured concrete.

Working principle: in the construction of the drainage pipeline of the high-rise building, the water-stopping main pipe 1 is placed between pouring templates, then the water-stopping main pipe 1 placed on the top plate template is stably placed through the fixing plate 7 and the fixing holes 8 by utilizing the fixing nails, then the pipe cover 2 is placed on the water-stopping main pipe 1, the diameter of the pipe cover 2 is wider and can be consistent with the diameter of the annular liquid collecting pipe 31 on the side drainage mechanism 3, the pipe cover 2 can be covered on the top side of the annular liquid collecting pipe 31, the cover plate lifting fixing mechanism 4 is arranged on the pipe cover 2, two rotating stop rods 46 on the cover plate lifting fixing mechanism 4 are unfolded into two stop rod fixing notch 47 under the pushing action of the elastic force of the extrusion spring 49, the stop rod fixing notch 47 is matched with the rotating stop rod 46, then the rotating disc 44 rotates, the threaded stop rod 42 is driven to rotate, the threaded rod moves upwards under the action of the threaded hole 43, and drive the movable block 41 to move upwards, the rotation stop lever 46 moves in the stop lever fixing notch 47, vertical movement limit can be realized, the movable block 41 is not easy to rotate, simultaneously, under the action of two pulling columns 52, vertical position limit of the movable block 41 can be realized, the movable block 41 moves to drive the two rotation stop levers 46 to move upwards, along with continuous movement, the top side of the rotation stop lever 46 is contacted with the top side inner wall of the stop lever fixing notch 47, at the moment, the rotation stop lever 46 can not move upwards continuously, the bottom horizontal supporting plate 48 can support the rotation stop lever 46 in a horizontal state, the pipe cover 2 can be fixedly arranged on the water stop main pipe 1 through threaded rotation, top protection seal is realized, mortar and sand in concrete are not easy to be injected into the water stop main pipe 1 in the concrete pouring process, the problem of pollution or at stagnant water main pipe 1 inner wall caking, influence follow-up drainage pipe installation is avoided, after pouring is accomplished, need take out tube cap 2, reverse rotation rolling disc 44, can drive movable block 41 and move down, this moment rotate the lower position that pin fixed slot 47 will be moved to pin 46, operating personnel upwards pull lift ring 54, drive two pulling columns 52 upwards, and under the effect of bottom tray 55 and top tray 56, the cooperation removes hole 51, two rotation pin 46 will rotate and accomodate, extrusion spring 49 is in compressed state this moment, after two rotation pin 46 break away from pin fixed slot 47, can upwards mention tube cap 2, realize tube cap 2's taking out, stable coupling mechanism 6 of setting, annular slab 61 on stable coupling mechanism 6 can inlay in the concrete of pouring, simultaneously be equipped with a plurality of reinforcing ring 62 on annular slab 61, a plurality of reinforcing ring 62 has outside inwards, the diameter gradually decreases, reinforcing ring 62 and annular slab 61's setting, can effectively strengthen the water stop 1 of installation and concrete main pipe's connection, firm water stop 1 is difficult to pour, the annular 63 is gone up with the fixed slot 47, the annular 64 is gone up in the middle part and the middle part is more convenient, the bottom is difficult for pouring, the annular 64 is gone up with the concrete main pipe's bottom, the annular 64 is difficult to separate, the annular 64 is filled in the middle part is convenient, the bottom 65, the bottom is easy to be connected with the annular slab 63, and the bottom is filled with the annular slab, and the annular slab is more difficult to be filled down.

Example 2:

as shown in fig. 7, a drainage pipe embedded type water stop joint is different from embodiment 1 in that the stable connection mechanism 6 is different from embodiment 2, and the stable connection mechanism 6 in embodiment 2 is as follows: the stable connection mechanism 6 includes a bottom ring 63, a middle ring 64 and an upper ring 65 fixedly installed at the outside of the water stop main pipe 1, and the diameters of the bottom ring 63, the middle ring 64 and the upper ring 65 gradually decrease.

The principle of this embodiment is similar to embodiment 1, with the main differences: the bottom ring 63, the middle ring 64 and the upper ring 65 on the stable connecting mechanism 6 are embedded in poured concrete, the diameters of the bottom ring 63, the middle ring 64 and the upper ring 65 are decreased progressively, so that filling and pouring of the concrete are more convenient, after pouring, the water stop main pipe 1 and the concrete are strong in connection stability, and the principles of other parts are the same as those of the embodiment 1 and are not repeated herein.

Claims (9)

1. The utility model provides a pre-buried stagnant water festival of drainage pipe which characterized in that includes

The water stopping main pipe (1), a pipe cover (2) is arranged above the water stopping main pipe (1), a side liquid discharging mechanism (3) is arranged on the side edge of the water stopping main pipe (1), an annular liquid collecting pipe (31) on the side liquid discharging mechanism (3) is arranged on the outer side of the water stopping main pipe (1) to collect and discharge ground liquid, and the pipe cover (2) covers the top side of the annular liquid collecting pipe (31);

the cover plate lifting fixing mechanism (4), the cover plate lifting fixing mechanism (4) comprises a threaded rotating rod (42) which is installed on the pipe cover (2) in a threaded mode, a moving block (41) is installed at the bottom end of the threaded rotating rod (42) in a rotating mode, rotating stop rods (46) are installed at two sides of the moving block (41) in a rotating mode, two stop rod fixing notch (47) are formed in the inner wall of the water stop main pipe (1), and the two rotating stop rods (46) are movably installed in the two stop rod fixing notch (47) respectively;

the water stop main pipe comprises a stable connecting mechanism (6), wherein the stable connecting mechanism (6) comprises a plurality of fixing plates (7) fixedly installed on the outer side of the water stop main pipe (1), and a plurality of fixing holes (8) are formed in the top sides of the plurality of fixing plates (7).

2. A drain pipe pre-buried water stop according to claim 1, wherein: a threaded hole (43) is formed in the top side of the pipe cover (2), and the top thread of the threaded rotating rod (42) penetrates through the threaded hole (43) and is fixedly provided with a rotating disc (44).

3. A drain pipe pre-buried water stop according to claim 1, wherein: both sides of movable block (41) are all fixed mounting have and rotate seat (45), and two rotation pin (46) rotate respectively and install on two rotation seats (45), and the bottom side of rotation pin (46) flushes with the bottom side of movable block (41), and the one end that extrusion spring (49) was installed to the top side fixed mounting of rotation pin (46), and the other end fixed mounting of extrusion spring (49) is on one side of movable block (41).

4. A drain pipe pre-buried water stop according to claim 1, wherein: the bottom side of movable block (41) fixed mounting has bottom level to prop layer board (48), and the both sides of bottom level to prop layer board (48) are located the below position of two rotation pin (46) respectively, and the top side of bottom level to prop layer board (48) contacts with the bottom side of two rotation pin (46), is equipped with manual pole mechanism (5) that lifts on rotation pin (46).

5. The drainage pipeline embedded water stop joint according to claim 4, wherein: the manual lifting rod mechanism (5) comprises a moving hole (51) formed in the top side of the rotation stop rod (46), a pulling column (52) is movably mounted in the moving hole (51), two ends of the pulling column (52) extend out of the moving hole (51), a bottom tray (55) and a top tray (56) are fixedly sleeved on the pulling column (52), and the bottom tray (55) and the top tray (56) are respectively located below and above the rotation stop rod (46).

6. The drainage pipe pre-buried type water stop according to claim 5, wherein: two pull column holes (53) are formed in the top side of the pipe cover (2), the top ends of the two pull columns (52) respectively penetrate through the two pull column holes (53) in a movable mode, and the same pull ring (54) is fixedly installed.

7. A drain pipe pre-buried water stop according to claim 1, wherein: be equipped with liquid circulation notch (32) on annular liquid collecting pipe (31), annular liquid collecting pipe (31) are awl barrel structure setting, have seted up a plurality of circulation hole (34) on the inner wall of stagnant water person in charge (1), and a plurality of circulation hole (34) all are linked together with liquid circulation notch (32), and fixed mounting has hydrops filter screen (33) on the inner wall of annular liquid collecting pipe (31), and hydrops filter screen (33) are annular structure setting.

8. A drain pipe pre-buried water stop according to claim 1, wherein: the stable connecting mechanism (6) comprises an annular plate (61) fixedly arranged on the outer side of the water stop main pipe (1), a plurality of reinforcing rings (62) are fixedly arranged on the top side of the annular plate (61), and the diameters of the reinforcing rings (62) gradually decrease from outside to inside.

9. A drain pipe pre-buried water stop according to claim 1, wherein: the stable connecting mechanism (6) comprises a bottom ring (63), a middle ring (64) and an upper ring (65) which are fixedly arranged on the outer side of the water stop main pipe (1), and the diameters of the bottom ring (63), the middle ring (64) and the upper ring (65) are gradually decreased.