1. The utility model provides a downspout sealing device for roofing maintenance outlet which characterized in that: comprises an upper piston sleeve (3), a lower piston sleeve (4) and a rubber sleeve (5),

a first spigot (6) is arranged on the outer side of the upper end of the upper piston sleeve (3), more than two clamping blocks (7) are arranged on the outer side of the lower end of the upper piston sleeve (3) along the circumferential direction,

a second spigot (8) is arranged on the outer side of the lower end of the lower piston sleeve (4), more than two first notches (9) and more than two second notches (10) are arranged in the side wall of the lower piston sleeve (4) along the circumferential direction, the first notches (9) are arranged above the second notches (10), the sizes and the positions of the first notches (9) and the second notches (10) both correspond to the clamping blocks (7), an auxiliary plate (12) is arranged on the inner wall of the lower end of the lower piston sleeve (4),

go up piston sleeve (3) set up in piston sleeve (4) down, rubber sleeve (5) cover is established in last piston sleeve (3) and piston sleeve (4) outside down, the up end and the lower terminal surface of rubber sleeve (5) contact with the up end of the lower terminal surface of first tang (6) and second tang (8) respectively.

2. A stormwater pipe sealing device for a roof repair drain as claimed in claim 1, wherein: the lower end side wall of the upper piston sleeve (3) is uniformly provided with more than two notches (11) along the circumferential direction, the notches (11) are all opened downwards, and the length direction of any one notch (11) is parallel to the axial direction of the upper piston sleeve (3).

3. A stormwater pipe sealing device for a roof repair drain as claimed in claim 1, wherein: the side wall of the rubber sleeve (5) comprises more than two thin-wall parts (13), the thin-wall parts (13) are arranged at intervals along the axial direction, and the thickness of any thin-wall part (13) is smaller than that of the side wall of the adjacent rubber sleeve (5).

Background

The roof of the North American house building is required to be replaced when the North American house building is usually used for 10-20 years, and the rainwater drainage port of the roof of the old house is repaired again because the rainwater drainage port is repaired over the years and the water drainage port is required to be repaired again for preventing water leakage, so that the connecting part between the new rainwater drainage port and the rainwater pipe is required to be sealed by a sealing device. The common use in the prior art is mechanical compression type sealing assembly, namely, the upper piston and the lower piston are pressed by a screw to axially displace, so that the upper piston and the lower piston axially compress the rubber piece, and finally, the rubber piece is contacted with the rainwater pipe after being radially expanded, thereby achieving the sealing effect.

The prior art sealing device is very difficult to install for two reasons: 1. the sealing device is placed below a narrow pipeline, the depth is deep, a lengthened screw wrench is needed to probe downwards, the screw is difficult to align, and the screw needs to be screwed up a little by a little, so that the operation difficulty of the action is high in a field environment; 2. since 3-4 screws need to be screwed, and the screwing degree of each screw needs to be consistent, so that the force application when the piston compresses the rubber is uniform, the screws are screwed almost by feel under the condition that the screws cannot be observed on site, and the sealing effect is not ideal.

The existing sealing device also has problems in use effect, because the rainwater pipe is repaired for a long time, the inner surface of the pipe is not good, and a plurality of pits exist, and if the rubber sealing surface is contacted on the pit surface of the rainwater pipe, the sealing effect is very poor.

Disclosure of Invention

The invention aims to provide a rainwater pipe sealing device for a roof maintenance water outlet, which aims to solve the technical problem that the installation operation of the rainwater pipe sealing device in the prior art is very difficult.

The invention relates to a rainwater pipe sealing device for a roof maintenance water outlet, which comprises an upper piston sleeve, a lower piston sleeve and a rubber sleeve,

the outer side of the upper end of the upper piston sleeve is provided with a first spigot, the outer side of the lower end of the upper piston sleeve is provided with more than two clamping blocks along the circumferential direction,

the outer side of the lower end of the lower piston sleeve is provided with a second spigot, the side wall of the lower piston sleeve is provided with more than two first notches and more than two second notches along the circumferential direction, the first notches are arranged above the second notches, the sizes and the positions of the first notches and the second notches correspond to the clamping blocks, the inner wall of the lower end of the lower piston sleeve is provided with an auxiliary plate,

the upper piston sleeve is arranged in the lower piston sleeve, the rubber sleeve is sleeved outside the upper piston sleeve and the lower piston sleeve, and the upper end face and the lower end face of the rubber sleeve are respectively contacted with the lower end face of the first spigot and the upper end face of the second spigot.

Furthermore, more than two notches are uniformly distributed in the side wall of the lower end of the upper piston sleeve along the circumferential direction, the notches are all opened downwards, and the length direction of any one notch is parallel to the axial direction of the upper piston sleeve.

Furthermore, the side wall of the rubber sleeve comprises more than two thin wall parts which are arranged at intervals along the axial direction, and the thickness of any thin wall part is smaller than that of the adjacent side wall of the rubber sleeve.

Compared with the prior art, the invention has positive and obvious effect. The rainwater pipe sealing device for the roof maintenance water outlet is very convenient and rapid to install and operate on site, the lower piston sleeve is lifted to clamp the clamping block into the second notch, the installation operation is completed, the site operation time is shortened, the installation efficiency is improved, and the problem of difficulty in installation and operation is solved. The rubber sleeve is under compression state, and the thin wall portion more than two all can produce sealed contact surface, has increased sealed area, makes sealed effect more reliable, has avoided the leakage problem because the surface condition of downspout leads to badly, has increased life.

Drawings

Fig. 1 is a schematic structural view showing a state of use of a sealing device for a rainwater pipe of a roof repair outlet according to the present invention.

Fig. 2 is a schematic view of a partially enlarged structure in fig. 1.

Fig. 3 is a schematic structural view of a deformed rubber sleeve in a rainwater pipe sealing device for a roof repair outlet according to the present invention.

Fig. 4 is a schematic perspective view of an upper sealing sleeve in the rainwater pipe sealing device for a roof repair outlet according to the present invention.

Fig. 5 is a schematic top view of the upper sealing sleeve of the rainwater pipe sealing device for the roof repair outlet according to the present invention.

FIG. 6 is a schematic sectional view of the structure of FIG. 5B-B.

FIG. 7 is a schematic cross-sectional view of the structure of FIG. 5C-C.

Fig. 8 is a perspective view illustrating a lower sealing sleeve in the rainwater pipe sealing device for a roof repair outlet according to the present invention.

Fig. 9 is a schematic top view of a lower sealing sleeve in a storm drain sealing device for a roof service drain according to the present invention.

Fig. 10 is a schematic sectional view of fig. 9 taken along line D-D.

FIG. 11 is a schematic cross-sectional view of E-E of FIG. 9.

Fig. 12 is a schematic top view showing the structure of a rubber boot used in a rainwater sealing device for a roof repair outlet according to the present invention.

Fig. 13 is a schematic sectional view of fig. 12 showing the structure from F to F.

Detailed Description

Example 1

The present invention will be further described with reference to the drawings and examples, but the present invention is not limited to the examples, and all similar structures and similar variations using the present invention shall fall within the scope of the present invention.

As shown in fig. 1 to 13, a rainwater pipe sealing device for a roof repair drain opening of the present invention includes an upper piston sleeve 3, a lower piston sleeve 4 and a rubber sleeve 5,

a first spigot 6 is arranged on the outer side of the upper end of the upper piston sleeve 3, more than two clamping blocks 7 are arranged on the outer side of the lower end of the upper piston sleeve 3 along the circumferential direction,

a second spigot 8 is arranged on the outer side of the lower end of the lower piston sleeve 4, more than two first notches 9 and more than two second notches 10 are arranged in the side wall of the lower piston sleeve 4 along the circumferential direction, the first notches 9 are arranged above the second notches 10, the sizes and the positions of the first notches 9 and the second notches 10 correspond to the clamping blocks 7, an auxiliary plate 12 is arranged on the inner wall of the lower end of the lower piston sleeve 4,

the upper piston sleeve 3 is arranged in the lower piston sleeve 4, the rubber sleeve 5 is sleeved on the outer sides of the upper piston sleeve 3 and the lower piston sleeve 4, and the upper end face and the lower end face of the rubber sleeve 5 are respectively contacted with the lower end face of the first spigot 6 and the upper end face of the second spigot 8.

Furthermore, the side wall of the lower end of the upper piston sleeve 3 is uniformly provided with more than two notches 11 along the circumferential direction, the notches 11 are all opened downwards, and the length direction of any one notch 11 is parallel to the axial direction of the upper piston sleeve 3.

Further, the side wall of the rubber sleeve 5 comprises more than two thin parts 13, the thin parts 13 are arranged at intervals along the axial direction, and the thickness of any thin part 13 is smaller than that of the adjacent side wall of the rubber sleeve 5.

The working process of the embodiment: during field operation, the rainwater pipe 2 is sleeved on the periphery of the roof drainage port 1, the fixture block 7 of the upper piston sleeve 3 is clamped into the first notch 9 of the lower piston sleeve 4, the rubber sleeve 5 is sleeved outside the upper piston sleeve 3 and the lower piston sleeve 4 and between the first spigot 6 and the second spigot 8, then the sealing device is placed to a preset position along the roof drainage port 1, the lower piston sleeve 4 is lifted upwards by using a tool through the auxiliary plate 12, the fixture block 7 of the upper piston sleeve 3 is clamped into the second notch 10 of the lower piston sleeve 4, the rubber sleeve 5 is extruded, the rubber sleeve 5 is compressed axially, the side wall or the thin wall part 13 of the rubber sleeve 5 is forced to be radially bent and deformed to be in close contact with the inner wall of the rainwater pipe 2, and therefore installation operation is completed.

The notches 11 facilitate the deformation and shrinkage of the upper piston sleeve 3 and the snapping of the snapping block 7 into the first recess 9 and the second recess 10.

The sealing device is very convenient and quick to install and operate on site, the lower piston sleeve 4 is lifted to enable the fixture block 7 to be clamped into the second notch 10, the installation operation is completed, the site operation time is shortened, the installation efficiency is improved, and the problem of difficulty in installation and operation is solved. The rubber sleeve 5 is in a compressed state, more than two thin wall parts 13 can generate sealing contact surfaces, the sealing area is increased, the sealing effect is more reliable, the leakage problem caused by poor surface conditions of the rainwater pipe 2 is avoided, and the service life is prolonged.