CN219060646U - Waterproof mounting structure for water outlet - Google Patents

Abstract

The utility model discloses a waterproof installation structure for a water falling opening, which comprises a heat preservation protective layer, a rainwater hopper and a waterproof connection coiled material, wherein the heat preservation protective layer forms the water falling opening and comprises a metal plate, a heat preservation plate and a waterproof main body coiled material which are sequentially arranged from bottom to top, the rainwater hopper comprises a hopper body and a head, a connection end plate is arranged outside a water inlet of the hopper body in a radial extending mode, the inner end of the connection end plate is connected with the head through a threaded connection assembly, the outer end of the connection end plate stretches into the space between the metal plate and the heat preservation plate, the waterproof connection coiled material is provided with a butt joint opening corresponding to the water inlet of the hopper body, the inner end of the waterproof connection coiled material is provided with an installation hole for the threaded connection assembly to penetrate through, the installation hole is clamped between the inner end of the connection end plate and the head through the threaded connection assembly, the outer end of the waterproof connection coiled material is used for being connected with the waterproof main body coiled material, the waterproof connection coiled material is reliably connected between the waterproof main body coiled material and the rainwater hopper, water seepage phenomenon is avoided, and waterproof effect is improved.

Description

Waterproof mounting structure for water outlet

Technical Field

The utility model belongs to the technical field of water outlet water prevention, and particularly relates to a water outlet water-proof mounting structure.

Background

The siphon water falling hopper is a drainage device commonly used on a roof, when the accumulated water in the gutter exceeds a certain height, the siphon water falling hopper can produce a siphon effect, and at the moment, the drainage capacity of the water falling hopper is increased, so that the accumulated water on the roof can be drained more quickly. In the prior art, in order to prevent rainwater at the water falling opening from penetrating into a roof, a scheme of paving waterproof coiled materials on the roof and beating sealant at the installation position of a siphon water falling hopper and the roof is generally adopted, and water seepage is easy to cause due to installation gaps between the waterproof coiled materials and the siphon water falling hopper.

Disclosure of Invention

Aiming at the defects or shortcomings, the utility model provides a waterproof installation structure for a water falling port, and aims to solve the technical problem that water seepage is easy to cause due to an installation gap between a water falling hopper and a roof waterproof coiled material.

In order to achieve the above object, the utility model provides a waterproof installation structure for a water outlet, wherein the waterproof installation structure for the water outlet comprises a heat-insulating protection layer, a rainwater hopper and a waterproof connection coiled material, the heat-insulating protection layer forms the water outlet and comprises a metal plate, a heat-insulating plate and a waterproof main coiled material which are sequentially arranged from bottom to top, the rainwater hopper comprises a hopper body and a head, a connecting end plate is arranged outside a water inlet of the hopper body in a radial extending manner, the inner end of the connecting end plate is connected with the head through a threaded connection assembly, the outer end of the connecting end plate extends into the space between the metal plate and the heat-insulating plate, the waterproof connection coiled material is provided with a butt joint corresponding to the water inlet of the hopper body, the inner end of the waterproof connection coiled material is provided with an installation hole for the threaded connection assembly to penetrate through and is clamped between the inner end of the connecting end plate and the head through the threaded connection assembly, and the outer end of the waterproof connection coiled material is used for being connected with the waterproof main coiled material.

In the embodiment of the utility model, an adhesive layer is arranged between the waterproof connecting coiled material and the inner end of the connecting end plate.

In the embodiment of the utility model, the adhesive layer comprises a first sealing section, a second sealing section and a third sealing section which are sequentially connected, the first sealing section and the third sealing section are respectively arranged on the lower side and the upper side of the waterproof connecting coiled material, the first sealing section and the third sealing section are in one-to-one correspondence and are in gluing connection with the inner end of the connecting end plate and the head part, the first sealing section and the third sealing section are all arranged on the outer side of the threaded connecting assembly in a surrounding manner, and the second sealing section is arranged on the end side of the waterproof connecting coiled material.

In the embodiment of the utility model, the caliber of the water falling opening on the heat insulation plate is gradually increased from bottom to top, the waterproof connecting coiled material comprises a first straight section, an inclined section and a second straight section which are sequentially connected, the first straight section forms a mounting hole and is clamped between the inner end of the connecting end plate and the head part through a threaded connecting assembly, the inclined section is paved on the side wall of the water falling opening of the heat insulation plate, and the second straight section is connected with the waterproof main coiled material.

In the embodiment of the utility model, the connecting end plate comprises a first step part which is arranged to extend from the outside of the water inlet along the radial direction, a connecting part which is bent upwards from one end of the first step part far away from the water inlet and extends, and a second step part which is arranged to extend from the upper end of the connecting part along the radial direction, wherein the first straight section and the head part are sequentially overlapped on the first step part from bottom to top and are connected in series through a threaded connecting component, and the heat insulation plate and the metal plate are respectively arranged on the upper side and the lower side of the second step part.

In an embodiment of the utility model, the thermal insulation protection layer further comprises a fireproof plate arranged between the thermal insulation plate and the waterproof main body coiled material.

In the embodiment of the utility model, the caliber of the water falling opening on the waterproof main body coiled material is larger than the caliber of the water falling opening on the upper end of the fireproof plate, the second straight section comprises a jointing extension part and a welding part which are sequentially arranged, the jointing extension part is connected with one end of the inclined section, which is far away from the first straight section, and is in jointing arrangement on the fireproof plate, and the welding part extends to the upper side of the waterproof main body coiled material and is in welding connection.

In an embodiment of the utility model, the thermal insulation protection layer further comprises a steam barrier film arranged between the metal plate and the thermal insulation plate.

In the embodiment of the utility model, one end of the steam barrier close to the water falling port is fixed on the upper side of the outer end of the connecting end plate through an adhesive tape.

In the embodiment of the utility model, the head part comprises a flange plate and a guide cover, the threaded connection assembly comprises a first threaded piece and a second threaded piece, the first threaded piece sequentially penetrates through the connection end plate, the waterproof connection coiled material mounting hole and the flange plate, and the second threaded piece is positioned on the inner side of the flange plate and penetrates through the connection end plate and the guide cover.

Through the technical scheme, the waterproof installation structure for the water outlet provided by the embodiment of the utility model has the following beneficial effects:

when adopting foretell water fall mouth with waterproof mounting structure, owing to including heat preservation inoxidizing coating, the rainwater fill and waterproof connection coiled material, heat preservation inoxidizing coating forms the water fall mouth and include by supreme metal sheet that sets gradually down, heated board and waterproof main part coiled material, the outer radial extension of the water inlet of the bucket body of rainwater fill is provided with the connection end plate, the inner of connection end plate passes through threaded connection subassembly and head connection, the outer end of connection end plate stretches into between metal sheet and the heated board, the inner of waterproof connection coiled material is formed with the mounting hole that supplies threaded connection subassembly to wear to establish, waterproof connection coiled material's outer end is used for being connected with waterproof main part coiled material, then threaded connection subassembly passes connection end plate in proper order, waterproof connection coiled material and head, threaded connection subassembly is including the nut, apply the pretightning force through the nut to the head, so that waterproof connection coiled material compresses tightly, fix, and then guaranteed that waterproof connection has formed reliably between waterproof main part coiled material and rainwater fill, avoid appearing the infiltration phenomenon, improve waterproof effect, in addition, the heat preservation inoxidizing coating all is under waterproof main part coiled material and waterproof connection coiled material's protection, the metal sheet can directly provide rigid support for rainwater fill, firm rainwater fill.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

fig. 1 is a schematic structural view of a water-proof installation structure for a water drain according to an embodiment of the present utility model;

fig. 2 is a partial enlarged view at a in fig. 1.

Description of the reference numerals

1. Water outlet of thermal insulation protective layer 10

11. Metal plate 12 heat insulation plate

13. Waterproof main body coiled material 14 fireproof plate

15. Steam barrier 16 adhesive tape

2. Rain water bucket 21 bucket body

22. Flange plate of head 221

222. The air guide sleeve 23 is connected with the end plate

231. First step 232 connection

233. Waterproof connection coiled material for second step part 3

31. The first straight section 32 is an inclined section

33. The second straight section 34 conforms to the extension

35. Welded part 4 threaded connection assembly

5. First seal segment of adhesive layer 51

52. Second seal segment 53 third seal segment

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

The water-repellent mounting structure for a water outlet of the present utility model is described below with reference to the drawings.

As shown in fig. 1 and 2, the present utility model provides a water-repellent mounting structure for a water outlet, wherein the water-repellent mounting structure for a water outlet includes:

the heat-insulating protective layer 1 forms a water falling opening 10 and comprises a metal plate 11, a heat-insulating plate 12 and a waterproof main coiled material 13 which are sequentially arranged from bottom to top;

the rainwater hopper 2 comprises a hopper body 21 and a head 22, wherein a connecting end plate 23 is arranged at the outer radial extension of a water inlet of the hopper body 21, the inner end of the connecting end plate 23 is connected with the head 22 through a threaded connecting assembly 4, and the outer end of the connecting end plate 23 extends between the metal plate 11 and the heat insulation plate 12;

the waterproof connecting coiled material 3 is provided with a butt joint corresponding to the water inlet of the bucket body 21, the inner end of the waterproof connecting coiled material 3 is provided with a mounting hole for the threaded connecting assembly 4 to penetrate through and is clamped between the inner end of the connecting end plate 23 and the head 22 through the threaded connecting assembly 4, and the outer end of the waterproof connecting coiled material 3 is used for being connected with the waterproof main coiled material 13.

When adopting foretell waterproof mounting structure for water outlet, owing to including heat preservation inoxidizing coating 1, the rainwater fill 2 and waterproof connection coiled material 3, heat preservation inoxidizing coating 1 forms water outlet 10 and including the metal sheet 11 that sets gradually from bottom to top, heated board 12 and waterproof main part coiled material 13, the outer radial extension of the body 21 of rainwater fill 2 is provided with connection end plate 23, the inner of connection end plate 23 passes through threaded connection subassembly 4 and is connected with head 22, the outer end of connection end plate 23 stretches into between metal sheet 11 and the heated board 12, the inner of waterproof connection coiled material 3 is formed with the mounting hole that supplies threaded connection subassembly 4 to wear to establish, the outer end of waterproof connection coiled material 3 is used for being connected with waterproof main part coiled material 13, then threaded connection subassembly 4 passes connection end plate 23 in proper order, waterproof connection coiled material 3, head 22, threaded connection subassembly 4 is including tightening the nut, apply the pretightning force to head 22 through tightening nut, so that head 22 compresses tightly waterproof connection coiled material 3, and is fixed, and then, waterproof connection coiled material 3 has been guaranteed to form reliable connection between waterproof main part coiled material 13 and rainwater fill 2, the appearance is improved, waterproof connection coiled material 3 is in addition, waterproof main part 1 is in the waterproof connection coiled material 13, waterproof protection coiled material is under the waterproof protection effect is in the waterproof main part 13, waterproof protection coiled material is in the waterproof main part is in the waterproof protection of waterproof main part coiled material 13, waterproof protection is provided for the waterproof main part is under the waterproof protection effect, waterproof main part is under the waterproof protection, and waterproof main part coiled material is under the waterproof protection, and waterproof protection is directly and can be directly used for protecting.

Specifically, the metal plate 11 may be a steel plate, which has high strength and is suitable for roof gutter. It should be noted that the upper end opening of the bucket 21 is a water inlet of the bucket 21, and the lower end opening of the bucket 21 is a water outlet of the bucket 21.

As shown in fig. 1 and 2, in the embodiment of the present utility model, an adhesive layer 5 is provided between the waterproof connection roll 3 and the inner end of the connection end plate 23. The gap between the waterproof connecting coiled material 3 and the inner end of the connecting end plate 23 can be filled through the adhesive layer 5, so that water seepage at the joint of the waterproof connecting coiled material 3 and the connecting end plate 23 is avoided, in addition, as the adhesive layer 5 is arranged between the inner end of the connecting end plate 23 and the head 22 and is not contacted with the roof or the heat insulation protection layer 1, the roof or the heat insulation protection layer 1 cannot be deformed to fail, the adhesive layer 5 is prevented from being exposed to the outside too much, the aging speed of the adhesive layer 5 is reduced, and the service life is prolonged. Specifically, when the adhesive layer 5 is provided, the adhesive is applied around the water inlet against the screw connection assembly 4 penetrating through the connection end plate 23. Further, the inner and outer sides of the screw joint assembly 4 are coated with a ring of sealant so that the adhesive layer 5 can be uniformly spread over a larger area when the head 22 presses the waterproof connection roll 3 against the inner end of the connection end plate 23.

As shown in fig. 2, in the embodiment of the present utility model, the adhesive layer 5 includes a first seal segment 51, a second seal segment 52 and a third seal segment 53 which are sequentially connected, the first seal segment 51 and the third seal segment 53 are separately provided on the lower side and the upper side of the waterproof connecting coiled material 3, and the first seal segment 51 and the third seal segment 53 are bonded to the inner end of the connecting end plate 23 and the head 22 in one-to-one correspondence, and the first seal segment 51 and the third seal segment 53 are both provided around the outside of the screw connection assembly 4, and the second seal segment 52 is provided on the end side of the waterproof connecting coiled material 3. The gaps between the waterproof connecting coiled material 3 and the connecting end plate 23 and the head 22 can be completely filled through the structure of the three-section adhesive layer 5, so that the water seepage prevention effect is further improved. Specifically, when the gluing operation is performed, a circle of sealant can be smeared on the circumferential gap of the threaded connection assembly 4, so that the circumferential gap between the threaded connection assembly 4 and the waterproof connection coiled material 3 can be uniformly filled.

As shown in fig. 1 and 2, in the embodiment of the present utility model, the caliber of the water outlet 10 on the heat insulation board 12 gradually increases from bottom to top, the waterproof connection coiled material 3 includes a first straight section 31, an inclined section 32 and a second straight section 33, which are sequentially connected, the first straight section 31 forms a mounting hole and is clamped between the inner end of the connection end board 23 and the head 22 through the threaded connection assembly 4, the inclined section 32 is laid on the side wall of the heat insulation board 12 forming the water outlet 10, and the second straight section 33 is connected with the waterproof main coiled material 13. The side wall of the heat-insulating plate 12 which is obliquely arranged can effectively collect the accumulated water on the roof, the accumulated water is sequentially collected into the water inlet through the waterproof main coiled material 13, the second straight section 33 and the inclined section 3, and the accumulated water is not contacted with the heat-insulating plate 12, so that leakage is avoided; the second flat section 33 is tiled on the heat insulation protection layer 1, so that a constructor can conveniently connect the second flat section 33 with the waterproof main body coiled material 13, and specifically, the second flat section 33 and the waterproof main body coiled material 13 can be welded.

As shown in fig. 1 and 2, in the embodiment of the present utility model, the connection end plate 23 includes a first step portion 231 extending from the outside of the water inlet in the radial direction, a connection portion 232 extending from one end of the first step portion 231 away from the water inlet in an upward bending manner, and a second step portion 233 extending from the upper end of the connection portion 232 in the radial direction, the first straight section 31 and the head 22 are sequentially stacked on the first step portion 231 from bottom to top and connected in series by the screw connection assembly 4, and the heat insulation plate 12 and the metal plate 11 are respectively disposed on the upper and lower sides of the second step portion 233. The first step 231 facilitates press fitting of the first straight section 31 of the waterproof connecting roll 3, and the second step 232 facilitates supporting of the metal plate 11 to the bucket body 21.

As shown in fig. 1, in the embodiment of the present utility model, the insulation shield layer 1 further includes a fire protection plate 14 interposed between the insulation plate 12 and the waterproof body roll 13. The fire-retardant panel 14 may provide flame retardant and thermal insulation.

As shown in fig. 1 and 2, in the embodiment of the present utility model, the caliber of the water outlet 10 on the waterproof main body coiled material 13 is larger than the caliber of the water outlet 10 on the upper end of the fireproof plate 14, the second straight section 33 includes a fitting extension portion 34 and a welding portion 35 which are sequentially arranged, the fitting extension portion 34 is connected with one end of the inclined section 32 away from the first straight section 31 and is fitted on the fireproof plate 14, and the welding portion 35 extends to the upper side of the waterproof main body coiled material 13 and is welded and connected. The space for laying the second straight section 33 is reserved on the fireproof plate 14, so that the transition overlapping of the second straight section 33 and the waterproof main coiled material 13 is avoided, the material is saved, the gap at the joint of the waterproof connecting coiled material 3 and the waterproof main coiled material 13 can be avoided through welding, and the waterproof effect is ensured. Specifically, in one embodiment of the present utility model, the waterproof roll is made of a polymer material, and the welded portion 35 and the waterproof body roll 13 are connected together by hot air welding.

As shown in fig. 1, in the embodiment of the present utility model, the insulation shield layer 1 further includes a vapor barrier film 15 interposed between the metal plate 11 and the insulation plate 12. The steam can be prevented from penetrating into the heat insulation board 12 by the steam barrier 15, so that the heat insulation effect of the heat insulation board 12 is ensured.

As shown in fig. 2, in the embodiment of the present utility model, one end of the steam barrier 15 near the water outlet 10 is fixed to the upper side of the outer end of the connection end plate 23 by an adhesive tape 16. The adhesive tape 16 is arranged around the water inlet, and the inner end of the steam barrier 15 is glued to the outer end of the connecting end plate 23, so that good lap joint, sealing and waterproof effects can be realized through the adhesive tape 16. Specifically, the adhesive tape 16 may be a butyl adhesive tape, which has good elasticity and extensibility, stable chemical properties, and is suitable for a roof waterproof structure, and of course, the utility model is not limited thereto, and the material of the adhesive tape 16 should be selected according to the use environment and the use requirement.

As shown in fig. 1 and 2, in the embodiment of the present utility model, the head 22 includes a flange plate 221 and a guide cover 222, and the screw connection assembly 4 includes a first screw member and a second screw member, the first screw member sequentially passes through the connection end plate 23, the installation hole of the waterproof connection roll 3, and the flange plate 221, and the second screw member is located inside the flange plate 221 and passes through the connection end plate 23 and the guide cover 222. The flange plate 221 is used for compressing the inner end of the waterproof connection coiled material 3, the guide cover 222 is used for guiding water flow to improve drainage efficiency, the flange plate 221 and the guide cover 222 are installed without interference with the guide cover 222 through the first threaded piece and the second threaded piece which are arranged in a staggered mode, and the second threaded piece is located on the inner side of the flange plate 221 and does not affect the laying of the waterproof connection coiled material 3. Specifically, when the waterproof connection coiled material 3 and the flange plate 221 are installed, the complete waterproof connection coiled material 3 can be paved on the rainwater hopper 2, then the flange plate 221 is installed, the waterproof connection coiled material 3 is cut along the inner ring of the flange plate 221 to form a butt joint, and finally the flange plate 221 is fastened. Further, when the flange plate 221 is fastened by nuts, the tightening is performed diagonally and a plurality of times, so that the sealant is uniformly overflowed.

Specifically, in the present utility model, the water-drop outlet waterproof mounting structure is mounted by the steps of:

firstly, cutting a water falling opening 10 at a position of the heat preservation protective layer 1 corresponding to the rainwater hopper 2 and paving the water falling opening;

step two, uniformly smearing sealant on the inner side and the outer side of the first screw member and the circumferential gap of the first screw member on the connecting end plate 23 of the rainwater hopper 2;

thirdly, a waterproof connection coiled material 3 with the radius larger than that of the rainwater hopper 2 and meeting the welding size requirement is selected for paving, and after the waterproof connection coiled material 3 is initially positioned, the waterproof connection coiled material 3 is knocked by a claw hammer so that a first screw member penetrates through the waterproof connection coiled material 3;

uniformly coating sealant on the waterproof connecting coiled material 3 around the first screw member;

step five, placing the flange plate 221 on the bucket body 21, primarily fastening a first screw to ensure that the flange plate 221 does not shake, and then cutting the waterproof connection coiled material 3 along the inner ring of the flange plate 221;

step six, screwing nuts on the first screw member diagonally and repeatedly to ensure that sealant overflows uniformly, and uniformly smearing the overflowed redundant sealant along the inner ring of the flange plate 221 after fastening;

step seven, installing the air guide sleeve 222.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The utility model provides a waterproof mounting structure for water outlet, its characterized in that, water outlet includes:

the heat-insulating protective layer (1) forms a water falling opening (10) and comprises a metal plate (11), a heat-insulating plate (12) and a waterproof main coiled material (13) which are sequentially arranged from bottom to top;

the rainwater hopper (2), the rainwater hopper (2) comprises a hopper body (21) and a head (22), a connecting end plate (23) is arranged outside a water inlet of the hopper body (21) in a protruding mode along the radial direction, the inner end of the connecting end plate (23) is connected with the head (22) through a threaded connecting assembly (4), and the outer end of the connecting end plate (23) stretches into the space between the metal plate (11) and the heat insulation plate (12);

waterproof connection coiled material (3) is formed with the butt joint mouth that the water inlet of bucket body (21) corresponds, the inner of waterproof connection coiled material (3) is formed with the confession threaded connection subassembly (4) wears to establish the mounting hole and pass through threaded connection subassembly (4) clamp locates between the inner of connecting end plate (23) and head (22), the outer end of waterproof connection coiled material (3) be used for with waterproof main part coiled material (13) are connected.

2. The water-resistant installation structure for a water drain according to claim 1, wherein an adhesive layer (5) is provided between the waterproof connection roll (3) and the inner end of the connection end plate (23).

3. The water-proof mounting structure for water drain according to claim 2, wherein the adhesive layer (5) comprises a first sealing section (51), a second sealing section (52) and a third sealing section (53) which are sequentially connected, the first sealing section (51) and the third sealing section (53) are respectively arranged on the lower side and the upper side of the water-proof connection coiled material (3), the first sealing section (51) and the third sealing section (53) are in one-to-one correspondence with the inner end of the connection end plate (23) and the head part (22) in a gluing manner, the first sealing section (51) and the third sealing section (53) are all arranged on the outer side of the threaded connection assembly (4), and the second sealing section (52) is arranged on the end side of the water-proof connection coiled material (3).

4. The water-proof installation structure for a water outlet according to claim 1, wherein the caliber of the water outlet (10) on the heat insulation board (12) is gradually increased from bottom to top, the water-proof connection coiled material (3) comprises a first straight section (31), an inclined section (32) and a second straight section (33) which are sequentially connected, the first straight section (31) forms the installation hole and is clamped between the inner end of the connection end board (23) and the head part (22) through the threaded connection assembly (4), the inclined section (32) is paved on the side wall of the heat insulation board (12) forming the water outlet (10), and the second straight section (33) is connected with the water-proof main coiled material (13).

5. The water-proof installation structure for a water outlet according to claim 4, wherein the connecting end plate (23) comprises a first step part (231) extending from the outside of the water inlet along the radial direction, a connecting part (232) extending from one end of the first step part (231) away from the water inlet upwards in a bending manner, and a second step part (233) extending from the upper end of the connecting part (232) along the radial direction, the first straight section (31) and the head part (22) are sequentially overlapped on the first step part (231) from bottom to top, and are connected in series through the threaded connection assembly (4), and the heat-insulating plate (12) and the metal plate (11) are respectively arranged on the upper side and the lower side of the second step part (233).

6. The water-resistant installation structure for a water drain according to claim 4, wherein the heat-insulating protective layer (1) further includes a fireproof plate (14) interposed between the heat-insulating plate (12) and the waterproof main body coil (13).

7. The water-proof mounting structure for a water drain according to claim 6, wherein the caliber of the water drain (10) on the water-proof main body coiled material (13) is larger than the caliber of the water drain (10) on the upper end of the fireproof plate (14), the second straight section (33) comprises a jointing extension part (34) and a welding part (35) which are sequentially arranged, the jointing extension part (34) is connected with one end of the inclined section (32) away from the first straight section (31) and is jointed and arranged on the fireproof plate (14), and the welding part (35) extends to the upper side of the water-proof main body coiled material (13) and is welded.

8. The water-resistant mounting structure for a water drain according to any one of claims 1 to 7, wherein the heat-insulating protective layer (1) further includes a steam barrier film (15) interposed between the metal plate (11) and the heat-insulating plate (12).

9. The water-resistant mounting structure for a water drain according to claim 8, wherein an end of the steam barrier film (15) near the water drain (10) is fixed to an upper side of an outer end of the connection end plate (23) by an adhesive tape (16).

10. The water-break mounting structure according to any one of claims 1 to 7, wherein the head portion (22) includes a flange plate (221) and a guide cover (222), the screw-thread connection assembly (4) includes a first screw-thread member and a second screw-thread member, the first screw-thread member is sequentially provided to pass through the connection end plate (23), the mounting hole of the water-break connection coil (3) and the flange plate (221), and the second screw-thread member is provided inside the flange plate (221) and provided to pass through the connection end plate (23) and the guide cover (222).

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