CN212477957U - A leak protection pre-buried device for building plumbing riser installation - Google Patents

Abstract

The utility model relates to a fitting field is connected in the plumbing, specifically is a leak protection pre-buried device for building plumbing riser installation, including a toper section of thick bamboo, the fixed vertical ascending urceolus of last port of a toper section of thick bamboo, the inside wall middle part of a toper section of thick bamboo is fixed with vertical ascending inner tube, is provided with the water seal structure between urceolus and the inner tube, and is provided with eccentric adjustment mechanism on the water seal structure, the lower port of a toper section of thick bamboo is fixed with vertical decurrent inner skleeve, the outer sleeve has been cup jointed in the outside of inner skleeve, the lateral wall of the upper end fixed connection toper section of thick bamboo of outer sleeve. This kind of a leak protection pre-buried device for building plumbing riser installation realizes putting of different positions between a plurality of drainage risers, realizes getting into indoorly to the quick evacuation of bathroom caisson ponding and guaranteeing that the foul smell can not return, realizes the eccentric regulation between the upper and lower drainage riser, and the central axis is parallel to each other when guaranteeing that drainage riser connects from top to bottom.

Description

A leak protection pre-buried device for building plumbing riser installation

Technical Field

The utility model relates to a plumbing connection accessory field specifically is a leak protection pre-buried device that is used for building plumbing riser installation.

Background

In the installation of the vertical water supply and drainage pipes on the building body, connecting members are usually pre-embedded in the building floor in advance so as to connect the vertical water supply and drainage pipes at positions such as balconies, kitchens and toilets. When the existing pre-buried connecting piece is used for installing the drainage vertical pipes, when a plurality of drainage vertical pipes are arranged and installed, the center distance between the drainage vertical pipes is not convenient to regulate and control, so that the occupied space of the pipeline arrangement is unreasonable and irregular, in the actual operation, the manual measuring scale is needed in the past, time and labor are wasted, and the vertical center lines of the upper drainage vertical pipe and the lower drainage vertical pipe are not on the same straight line due to the installation error in the pre-buried connecting piece, so that the central axes are not parallel to each other when the upper drainage vertical pipe and the lower drainage vertical pipe are connected, so that the lateral stress between the upper drainage vertical pipe and the lower drainage vertical pipe is caused, the installation is not convenient, the bending of the drainage vertical pipes is easy to cause, the service life is shortened, and in the drainage process of the upper drainage vertical pipe and the lower drainage vertical pipe, the water supply and drainage stand pipe is characterized in that the water supply and drainage stand pipe can enter a room from an embedded connecting piece, indoor air deterioration is caused, accumulated water is easily generated at the embedded connecting piece, and drainage is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leak protection pre-buried device for building plumbing riser installation to solve the problem that proposes in the above-mentioned background art. In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pre-buried device of leak protection for building plumbing riser installation, including a toper section of thick bamboo, the fixed vertical ascending urceolus of last port of a toper section of thick bamboo, the inside wall middle part of a toper section of thick bamboo is fixed with vertical ascending inner tube, be provided with the water seal structure between urceolus and the inner tube, and the water seal structure is last to be provided with eccentric adjustment mechanism, the lower port of a toper section of thick bamboo is fixed with vertical decurrent inner skleeve, first outer sleeve has been cup jointed in the outside of inner skleeve, the lateral wall of the upper end fixed connection toper section of thick bamboo of first outer sleeve, the interior.

Preferably, the conical cylinder, the outer cylinder, the inner sleeve and the first outer sleeve share the central axis, a water storage tank with a circular cross section is reserved between the outer cylinder and the inner cylinder, and an insertion groove with a circular cross section and used for inserting the lower drainage vertical pipe is reserved between the inner sleeve and the first outer sleeve.

Preferably, a plurality of keyways along the axis trend are seted up to the lateral wall of urceolus, and a plurality of keyways are arranged along the circumference trend of urceolus equidistant, and a plurality of annulars have been seted up to the outside of first outer sleeve, and annular and first outer sleeve supply the central axis, and are a plurality of the annular is arranged along the axis trend equidistant of first outer sleeve.

Preferably, the center distance adjusting mechanism comprises two first connecting support legs and four second connecting support legs, two first connecting support legs and four second connecting support legs are arranged at equal intervals along the circumference direction of the first outer sleeve, two second connecting support legs are arranged on one side between the first connecting support legs, three second connecting support legs are arranged on the other side of the first connecting support legs, the first connecting support legs and the second connecting support legs are perpendicular to the central axis of the first outer sleeve, and the first connecting support legs and the second connecting support legs are fixedly connected to the outer side wall of the lower port of the first outer sleeve.

Preferably, the lengths of the first connecting support leg and the second connecting support leg are different, the end, far away from the first outer sleeve, of the first connecting support leg and the second connecting support leg is provided with a buckling block and a buckling groove matched with the buckling block, and the buckling blocks on the different connecting support legs can be connected with the corresponding buckling grooves in a buckling mode.

Preferably, the water seal structure comprises a second annular plate, a spacer sleeve is fixed on the lower surface of the second annular plate and is of a cylindrical structure, the spacer sleeve, the second annular plate and the inner cylinder share the central axis, the spacer sleeve is inserted into the water storage tank, a gap is reserved between the lower end of the spacer sleeve and the inner wall of the conical cylinder, a gap is also reserved between the upper port of the inner cylinder and the bottom surface of the second annular plate, and the distance between the bottom surface of the second annular plate and the inner side wall of the conical cylinder is not less than 5 cm.

Preferably, the second annular plate is provided with a plurality of drain holes, the drain holes are arranged at equal intervals along the circumferential direction of the second annular plate, the drain holes are positioned outside the upper end opening of the spacer sleeve and are communicated with a cavity between the spacer sleeve and the outer cylinder, a vertical skirt ring is fixed on the outer side edge of the lower surface of the second annular plate, the skirt ring is sleeved on the inner side of the outer cylinder, and the outer side wall of the skirt ring is in abutting-buckling contact with the inner wall of the inner cylinder.

Preferably, the water seal structure further comprises a ring cover, a plurality of convex blocks are fixed on the ring cover and arranged at equal intervals along the circumference of the ring cover, a plurality of plugs are fixed on the lower surface of the ring cover and arranged at equal intervals along the circumference of the ring cover, the plugs correspond to the drain holes one to one, the plugs can block the drain holes, a convex ring is fixed on the outer side edge of the upper surface of the second ring plate, and the inner side surface of the convex ring can be in buckling contact with the outer side surface of the ring cover.

Preferably, the eccentric adjusting mechanism comprises a second outer sleeve for connecting the upper drainage vertical pipe, a first annular plate is fixedly connected to the outer side wall of the second outer sleeve, the first annular plate and the second outer sleeve are eccentrically arranged, the center of an inner ring and the center of an outer ring of the second annular plate are also eccentrically arranged, and the inner diameter of the second annular plate is the same as the outer diameter of the first annular plate.

Preferably, the outer side wall of the first annular plate is in abutting-buckling contact with the inner side wall of the second annular plate, the outer side wall of the first annular plate and the inner side wall of the second annular plate are provided with matched stepped grooves, the second outer sleeve is located on the inner side of the inner cylinder, a gap is reserved between the second outer sleeve and the inner cylinder, and a gap is also reserved between the lower end of the second outer sleeve and the inner side wall of the conical cylinder.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in, realize putting of different positions between a plurality of drainage risers through centre-to-centre spacing adjustment mechanism, thereby can the effectual occupation space who utilizes the drainage riser, it is more reasonable neat to the range of drainage riser, realize the quick evacuation to bathroom caisson ponding and ensure that the foul smell can not return and get into indoorly through the water seal structure, can reach the propagation approach of effectively blocking virus and bacterium, it is healthy to keep the indoor environment, through eccentric adjustment mechanism, realize the eccentric adjustment between the upper and lower drainage riser, the central axis is parallel to each other when guaranteeing that drainage riser connects from top to bottom, thereby lead to appearing the stress that the side direction can not appear between the upper and lower drainage riser, the installation of drainage riser about the convenience, the life of drainage riser about improving.

Drawings

FIG. 1 is a first schematic view of a cross-sectional structure of an assembly shaft of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the overall explosion structure of the present invention;

FIG. 4 is a schematic view of a partial structure of the ring cover of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure of the final assembly shaft of the present invention;

fig. 6 is a schematic view of two general connection structures in the present invention;

FIG. 7 is a top view of the first two overall connection structures of FIG. 6;

FIG. 8 is a second top view of the two overall connection structures of FIG. 6;

fig. 9 is a top view of a plurality of overall connection structures in the present invention.

In the figure: 1. a tapered barrel; 2. an outer cylinder; 3. an inner barrel; 4. an inner sleeve; 5. a first outer sleeve; 6. a first connecting leg; 7. a second connecting leg; 8. a second outer sleeve; 9. a first ring plate; 10. a second ring plate; 11. a spacer sleeve; 12. a ring cover; 13. a plug; 14. a bump; 15. A skirt ring; 16. a convex ring; 17. a drain hole; 18. buckling blocks; 19. and (6) buckling grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the staff of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a pre-buried device of leak protection for building plumbing riser installation, including a toper section of thick bamboo 1, the fixed vertical ascending urceolus 2 of last port of a toper section of thick bamboo 1, the inside wall middle part of a toper section of thick bamboo 1 is fixed with vertical ascending inner tube 3, be provided with the water seal structure between urceolus 2 and the inner tube 3, and be provided with eccentric adjustment mechanism on the water seal structure, the lower port of a toper section of thick bamboo 1 is fixed with vertical decurrent inner skleeve 4, first outer sleeve 5 has been cup jointed in the outside of inner skleeve 4, the upper end fixed connection toper section of thick bamboo 1's of first outer sleeve 5 lateral wall, the interior lower extreme of first.

In this embodiment, the conical cylinder 1, the outer cylinder 2, the inner cylinder 3, the inner cylinder 4 and the first outer sleeve 5 share a central axis, a water storage tank with a circular cross section is reserved between the outer cylinder 2 and the inner cylinder 3, and an insertion groove with a circular cross section and used for inserting the lower drainage vertical pipe is reserved between the inner cylinder 4 and the first outer sleeve 5.

In this embodiment, a plurality of keyways along the axis trend are seted up to the lateral wall of urceolus 2, and a plurality of keyways move towards equidistant arrangement along the circumference of urceolus 2, and a plurality of annuluses have been seted up to the outside of first outer sleeve 5, and annular and first outer sleeve 5 supply the central axis, and are a plurality of the annular moves towards equidistant arrangement along the axis of first outer sleeve 5, and the effect of annular and keyway is in order to improve that whole pre-buried device can be better when pre-buried combine with reinforced concrete structure.

In this embodiment, the center distance adjusting mechanism includes two first connecting support legs 6 and four second connecting support legs 7, two of the first connecting support legs 6 and four of the second connecting support legs 7 are arranged at equal intervals along the circumferential direction of the first outer sleeve 5, one side between the two first connecting support legs 6 is provided with one second connecting support leg 7, the other side is provided with three second connecting support legs 7, the first connecting support legs 6 and the second connecting support legs 7 are perpendicular to the central axis of the first outer sleeve 5, and the first connecting support legs 6 and the second connecting support legs 7 are both fixedly connected to the outer side wall of the lower port of the first outer sleeve 5.

In this embodiment, the lengths of the first connecting leg 6 and the second connecting leg 7 are different, and the ends of the first connecting leg 6 and the second connecting leg 7 away from the first outer sleeve 5 are both provided with a buckling block 18 and a buckling groove 19 matched with the buckling block 18, and the buckling blocks 18 on different connecting legs can be in inserted connection with the corresponding buckling grooves 19.

In this embodiment, the water sealing structure includes a second ring plate 10, a spacer 11 is fixed on the lower surface of the second ring plate 10, the spacer bush 11 is a cylindrical structure, the spacer bush 11, the second annular plate 10 and the inner cylinder 3 share the central axis, the spacer bush 11 is inserted in the water storage tank, and a gap is reserved between the lower end of the spacer 11 and the inner wall of the conical cylinder 1, a gap is also reserved between the upper port of the inner cylinder 3 and the bottom surface of the second annular plate 10, the distance between the bottom surface of the second annular plate 10 and the inner side wall of the conical cylinder 1 is not less than 5cm, in the original patent (application number 201610539864.X), the water seal structure is in the interior of the double-adjustment eccentric, due to the height limitation of the double-adjustment eccentric, therefore, the water seal distance can not reach 5cm, the water seal structure in the technical scheme of the application is arranged between the outer cylinder 2 and the inner cylinder 3, and can surround the periphery of the inner cylinder 3, so can reach 5cm and above, improve the water seal effect.

In this embodiment, the second ring plate 10 is provided with a plurality of water drainage holes 17, the plurality of water drainage holes 17 are arranged at equal intervals along the circumferential direction of the second ring plate 10, the water drainage holes 17 are located outside the upper end opening of the spacer 11, the water drainage holes 17 are communicated with the cavity between the spacer 11 and the outer cylinder 2, the outer side edge of the lower surface of the second ring plate 10 is fixed with a vertically downward skirt ring 15, the skirt ring 15 is sleeved inside the outer cylinder 2, and the outer side wall of the skirt ring 15 is in abutting contact with the inner wall of the inner cylinder 3.

In this embodiment, the water seal structure further includes a ring cover 12, a plurality of protrusions 14 are fixed on the ring cover 12, the plurality of protrusions 14 are arranged at equal intervals along the circumferential direction of the ring cover 12, a plurality of plugs 13 are fixed on the lower surface of the ring cover 12, the plurality of plugs 13 are arranged at equal intervals along the circumferential direction of the ring cover 12, the plugs 13 correspond to the drainage holes 17 one by one, the plugs 13 can block the drainage holes 17, a convex ring 16 is fixed on the outer side of the upper surface of the second ring plate 10, and the inner side of the convex ring 16 can be in abutting-buckling contact with the outer side of the ring cover 12.

In this embodiment, the eccentric adjustment mechanism includes a second outer sleeve 8 for connecting an upper drainage vertical pipe, a first annular plate 9 is fixedly connected to an outer side wall of the second outer sleeve 8, the first annular plate 9 and the second outer sleeve 8 are eccentrically arranged, an inner ring center and an outer ring center of a second annular plate 10 are also eccentrically arranged, and an inner diameter of the second annular plate 10 is the same as an outer diameter of the first annular plate 9.

In this embodiment, the outer sidewall of the first annular plate 9 abuts against and contacts the inner sidewall of the second annular plate 10, the outer sidewall of the first annular plate 9 and the inner sidewall of the second annular plate 10 are provided with adaptive stepped grooves, the second outer sleeve 8 is located inside the inner cylinder 3, a gap is left between the second outer sleeve 8 and the inner cylinder 3, and a gap is also left between the lower end of the second outer sleeve 8 and the inner sidewall of the tapered cylinder 1.

The utility model discloses a use method and advantage: the anti-leakage embedded device for installing the building water supply and drainage stand pipe comprises the following processes:

adjusting the center distance between the vertical drainage pipes: as shown in fig. 6, 7, 8 and 9, when two or more pre-buried devices are pre-buried and connected, the first connecting leg 6 and the second connecting leg 7 with different lengths at the lower end of the first outer sleeve 5 are matched with each other, in this embodiment, the first connecting leg 6 is longer in length, and the second connecting leg 7 is shorter in length, as shown in fig. 8, when matching, the first connecting leg 6 and the first connecting leg 6 in the two pre-buried devices to be connected can be matched and connected according to actual conditions, as shown in fig. 7, the first connecting leg 6 and the second connecting leg 7 in the two pre-buried devices to be connected can also be matched and connected, as shown in fig. 9, the second connecting leg 7 and the second connecting leg 7 in the two pre-buried devices to be connected can also be matched and connected;

when the short second connecting support leg 7 and the second connecting support leg 7 are matched and connected in the three pre-buried devices 1, the pre-buried positions of the three vertical pipes for sewage disposal and diversion are pre-buried, for example, a sewage pipe is connected with a vent pipe and is connected with a clean water pipe, the distance between the center of the sewage pipe and the center of the vent pipe is 180mm, and the distance between the center of the vent pipe and the center of the clean water pipe is 180 mm;

2. when the two pre-buried devices are connected in a matching way by adopting the shorter second connecting support leg 7 and the second connecting support leg 7, the pre-buried devices are used for pre-buried positions of double vertical pipes, such as a sewage pipe connected with a ventilation pipe, and the distance between the center of the sewage pipe and the center of the ventilation pipe is 180 mm;

3. when the first connecting support legs 6 with longer lengths are matched and connected with the first connecting support legs 6 in the two embedded devices, the embedded positions of the outdoor vertical pipe and the vertical pipe of the pipe well are used, for example, a sewage pipe is connected with a vent pipe, and the distance between the center of the sewage pipe and the center of the vent pipe is 240 mm;

4. when the two embedded devices are connected in a matching way by adopting the shorter second connecting support leg 7 and the longer first connecting support leg 6, the embedded devices are used for embedding positions of outdoor vertical pipes and vertical pipes of pipe wells, such as a sewage pipe connected with a vent pipe, and the distance between the sewage pipe and the vent pipe is 210 mm;

the four types of matching connection can realize the adjustment of the center distance between the two drainage vertical pipes, the labor can be saved, the device can be directly used for realizing pre-embedding without a measuring scale, and the first connecting support leg 6 and the second connecting support leg 7 have different pointing angles, so that the placement of different positions among the plurality of drainage vertical pipes can be realized, the occupied space of the drainage vertical pipes can be effectively utilized, the arrangement of the drainage vertical pipes is more reasonable and neat, and the three types of connection can ensure that the pre-embedding devices are directly clamped through the connecting support legs, so that the operation is simple and convenient;

when the connection legs are connected in a matching manner, taking the first connection leg 6 and the second connection leg 7 as an example, as shown in fig. 7, the fastening block 18 on the first connection leg 6 is fastened with the fastening groove 19 on the second connection leg 7 correspondingly, and the fastening block 18 on the second connection leg 7 is fastened with the fastening groove 19 on the first connection leg 6 correspondingly, so that the two embedded devices are connected with each other, and the connection strength between the two embedded devices is higher through the fastening between the connection legs;

drainage of accumulated water and water sealing of odor: as shown in fig. 1, 2, 3 and 4, the spacer 11 changes the water storage tank formed between the inner cylinder 3, the conical cylinder 1 and the outer cylinder 2 into a U-shaped cross section, when the pre-embedded device accumulates water, the ring cover 12 drives the plug 13 to be taken out from the drainage hole 17 by holding the lug 14 with hands and applying force upwards, the accumulated water enters the water storage tank through the drainage hole and is discharged into the inner cylinder 4 from the gap between the upper end of the inner cylinder 3 and the second annular plate 10, and then is discharged from the lower drainage vertical pipe, so that the accumulated water in the caisson of the toilet is discharged, the operation is simple and convenient, after the accumulated water is discharged, the lug 14 is held with hands so that the ring cover 12 drives the plug 13 to block the inner cylinder 17, the water storage tank is annular and surrounds the upper drainage vertical pipe, so that the drainage amount is increased, and the quick drainage is realized under the condition of more accumulated water;

after a certain amount of water liquid is stored in the water storage tank, the height of the water liquid is higher than the gap between the lower end of the partition sleeve 11 and the inner wall of the conical cylinder 1, so that odor gushing upwards from the interior of the lower drainage vertical pipe enters the water storage tank through the gap between the inner cylinder 3 and the second annular plate 10, but the odor cannot enter a room through the water storage tank and the drainage hole 17 due to the sealing effect of the water liquid in the water storage tank, and the plugging of the drainage hole 17 by the plug 13 further seals the odor, so that the odor cannot enter the room, and the indoor environment is kept healthy;

eccentric adjustment between the upper and lower drainage vertical pipes: as shown in fig. 1, 2, 3, 6 and 7, the second annular plate 10 is eccentrically arranged with respect to the first annular plate 9, the first annular plate 9 is also eccentrically arranged with respect to the second outer sleeve 8, and the center of the first annular plate 9 is a away from the center of the second outer sleeve 8, that is, the eccentric distance is a, the distance from the center of the inner ring of the second annular plate 10 to the center of the outer ring is b, that is, the eccentric distance between the second annular plate 10 and the first annular plate 9 is b, when adjusting the eccentric distance between the upper and lower drainage risers, the distance between the center of the second outer sleeve 8 and the first annular plate 9 is changed by rotating the second outer sleeve 8, and the distance between the center of the first annular plate 9 and the center of the second annular plate 10 is changed by rotating the second annular plate 10, so as to adjust the center distance between the upper drainage riser and the lower drainage riser, the eccentric adjustment range is that the inner diameter value of the second outer sleeve 8 is subtracted from the outer diameter value of the first annular plate 9, then, the wall thickness value of the second outer sleeve 8 which is subtracted by twice enables the adjusting range to be not less than 2cm, and the central axes are ensured to be parallel to each other when the upper and lower vertical drainage pipes are connected, so that lateral stress cannot occur between the upper and lower vertical drainage pipes, the upper and lower vertical drainage pipes are convenient to install, and the service life of the upper and lower vertical drainage pipes is prolonged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a pre-buried device of leak protection for building plumbing riser installation, includes a toper section of thick bamboo (1), its characterized in that: the outer cylinder (2) with the upper end opening of the conical cylinder (1) fixed vertically upwards, the inner side wall middle part of the conical cylinder (1) is fixed with the vertically upwards inner cylinder (3), a water sealing structure is arranged between the outer cylinder (2) and the inner cylinder (3), an eccentric adjusting mechanism is arranged on the water sealing structure, a vertical downwards inner sleeve (4) is fixed on the lower end opening of the conical cylinder (1), a first outer sleeve (5) is sleeved on the outer side of the inner sleeve (4), the outer side wall of the upper end fixedly connected conical cylinder (1) of the first outer sleeve (5) is arranged, and a center distance adjusting mechanism is arranged at the inner lower end of the first outer sleeve (5).

2. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 1, wherein: the water storage tank is characterized in that the conical barrel (1), the outer barrel (2), the inner barrel (3), the inner sleeve (4) and the first outer sleeve (5) share the central axis, a water storage tank with a circular cross section is reserved between the outer barrel (2) and the inner barrel (3), and an insertion groove with a circular cross section and used for inserting the lower drainage vertical pipe is reserved between the inner sleeve (4) and the first outer sleeve (5).

3. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 2, wherein: the lateral wall of urceolus (2) is seted up a plurality of keyways that move towards along the axis, and a plurality of keyways walk to equidistant range along the circumference of urceolus (2), a plurality of annulars have been seted up in the outside of first outer sleeve (5), and annular and first outer sleeve (5) confession central axis, and are a plurality of the annular moves towards equidistant range along the axis of first outer sleeve (5).

4. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 2, wherein: center distance adjustment mechanism includes two first connection stabilizer blades (6) and four second connection stabilizer blades (7), two first connection stabilizer blade (6) and four second connection stabilizer blade (7) are walked to equidistant range along the circumference of first outer sleeve (5), two one side between first connection stabilizer blade (6) is provided with a second connection stabilizer blade (7), and the opposite side is provided with three second connection stabilizer blade (7), the central axis of first connection stabilizer blade (6) and second connection stabilizer blade (7) equal perpendicular to first outer sleeve (5), first connection stabilizer blade (6) and second connection stabilizer blade (7) equal fixed connection are on the lower port lateral wall of first outer sleeve (5).

5. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 4, wherein: the length of the first connecting supporting leg (6) is different from that of the second connecting supporting leg (7), the end, far away from the first outer sleeve (5), of the first connecting supporting leg (6) and the second connecting supporting leg (7) is provided with a buckling block (18) and a buckling groove (19) matched with the buckling block (18), and the buckling blocks (18) on different connecting supporting legs can be connected with the corresponding buckling grooves (19) in an inserting and buckling mode.

6. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 2, wherein: the water seal structure comprises a second annular plate (10), a spacer bush (11) is fixed on the lower surface of the second annular plate (10), the spacer bush (11) is of a cylindrical structure, the spacer bush (11), the second annular plate (10) and the inner cylinder (3) share the central axis, the spacer bush (11) is inserted into the water storage tank, a gap is reserved between the lower end of the spacer bush (11) and the inner wall of the conical cylinder (1), a gap is reserved between the upper end opening of the inner cylinder (3) and the bottom surface of the second annular plate (10), and the distance between the bottom surface of the second annular plate (10) and the inner side wall of the conical cylinder (1) is not smaller than 5 cm.

7. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 6, wherein: the water discharging device is characterized in that a plurality of water discharging holes (17) are formed in the second annular plate (10), the water discharging holes (17) are arranged at equal intervals along the circumferential direction of the second annular plate (10), the water discharging holes (17) are located on the outer side of an upper port of the spacer bush (11), the water discharging holes (17) are communicated with a cavity between the spacer bush (11) and the outer barrel (2), a vertical skirt ring (15) is fixed on the outer side edge of the lower surface of the second annular plate (10), the skirt ring (15) is sleeved on the inner side of the outer barrel (2), and the outer side wall of the skirt ring (15) is in abutting buckling contact with the inner wall of the inner barrel (3).

8. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 7, wherein: the water seal structure further comprises a ring cover (12), a plurality of convex blocks (14) are fixed on the ring cover (12), the convex blocks (14) are arranged at equal intervals along the circumferential direction of the ring cover (12), a plurality of plug columns (13) are fixed on the lower surface of the ring cover (12), the plug columns (13) are arranged at equal intervals along the circumferential direction of the ring cover (12), the plug columns (13) correspond to the drain holes (17) one to one, the plug columns (13) can block the drain holes (17), a convex ring (16) is fixed on the outer side edge of the upper surface of the second ring plate (10), and the inner side surface of the convex ring (16) can be in abutting-buckling contact with the outer side surface of the ring cover (12).

9. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 6, wherein: the eccentric adjusting mechanism comprises a second outer sleeve (8) used for connecting an upper drainage vertical pipe, a first annular plate (9) is fixedly connected to the outer side wall of the second outer sleeve (8), the first annular plate (9) and the second outer sleeve (8) are arranged eccentrically, the center of an inner ring and the center of an outer ring of the second annular plate (10) are also arranged eccentrically, and the inner diameter of the second annular plate (10) is the same as the outer diameter of the first annular plate (9).

10. The anti-leakage embedded device for the installation of the building water supply and drainage riser as claimed in claim 9, wherein: the outer side wall of the first annular plate (9) is in abutting-buckling contact with the inner side wall of the second annular plate (10), the outer side wall of the first annular plate (9) and the inner side wall of the second annular plate (10) are provided with adaptive step grooves, the second outer sleeve (8) is located on the inner side of the inner barrel (3), a gap is reserved between the second outer sleeve (8) and the inner barrel (3), and a gap is reserved between the lower end of the second outer sleeve (8) and the inner side wall of the conical barrel (1).

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