A rainwater pipe sealing device for roof maintenance drain outlet

Abstract

A rainwater pipe sealing device for roof maintenance drain outlets comprises an upper piston sleeve, a lower piston sleeve and a rubber sleeve, wherein a first stop is arranged on the outer side of the upper end of the upper piston sleeve, two or more clamping blocks are arranged on the outer side of the lower end of the upper piston sleeve along the circumferential direction, a second stop is arranged on the outer side of the lower end of the lower piston sleeve, two or more first notches and two or more second notches are arranged in the side wall of the lower piston sleeve along the circumferential direction, the first notch is arranged above the second notch, the upper piston sleeve is arranged in the lower piston sleeve, the rubber sleeve is arranged on the outer side of 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 in contact with the lower end face of the first stop and the upper end face of the second stop. The on-site installation operation of the present invention is very convenient and quick, and the installation operation is completed by lifting the lower piston sleeve to make the clamping block clamped in the second notch, which shortens the on-site operation time, improves the installation efficiency, and solves the problem of difficult installation operation.

Description

Technical Field

[0001] The invention relates to the field of construction, in particular to a sealing device, in particular to a rainwater pipe sealing device used for roof maintenance drain outlets. Background Art

[0002] North American house buildings usually need to have their roofs replaced after 10-20 years of use. The rainwater drains on the roofs of old houses have fallen into disrepair over the years, so new drains need to be built to prevent water leakage. Therefore, a sealing device is required to seal the connection between the new roof drain and the rainwater pipe. The commonly used mechanical compression seal assembly in the prior art is to compress the upper and lower pistons axially by screws to axially compress the rubber parts, and finally the rubber parts expand radially and contact the rainwater pipe, thereby achieving a sealing effect.

[0003] The sealing device in the prior art is very difficult to install for two reasons: 1. The sealing device is placed under a narrow pipe at a relatively deep depth, requiring an extended screw wrench to reach down and difficult to align with the screws, and needs to be tightened little by little, which is very difficult to operate in a field environment; 2. Since 3-4 screws need to be tightened, and each screw needs to be tightened to the same degree so that the piston can apply uniform force when compressing the rubber, the screws can be tightened almost by feel when the screws cannot be observed on site, which also leads to unsatisfactory sealing effect.

[0004] The existing sealing device also has problems in terms of effectiveness. Since the rainwater pipe has been in disrepair for a long time, the inner surface of the pipe is in poor condition and has many pits. If the rubber sealing surface contacts the pit surface of the rainwater pipe, the sealing effect is also very poor. Summary of the invention

[0005] The purpose of the present invention is to provide a rainwater pipe sealing device for roof repair drain outlets, which is intended to solve the technical problem that the installation operation of rainwater pipe sealing devices in the prior art is very difficult.

[0006] The rainwater pipe sealing device for roof maintenance drain outlet of the present invention comprises an upper piston sleeve, a lower piston sleeve and a rubber sleeve.

[0007] The upper end of the upper piston sleeve is provided with a first stopper, and the lower end of the upper piston sleeve is provided with more than two clamping blocks along the circumferential direction.

[0008] A second stop is arranged on the outer side of the lower end of the lower piston sleeve, and more than two first notches and more than two second notches are arranged in the side wall of the lower piston sleeve along the circumferential direction, the first notch is arranged above the second notch, and the size and position of the first notch and the second notch correspond to the block, and an auxiliary plate is arranged on the inner wall of the lower end of the lower piston sleeve.

[0009] The upper piston sleeve is arranged in the lower piston sleeve, the rubber sleeve is arranged outside the upper piston sleeve and the lower piston sleeve, and the upper end surface and the lower end surface of the rubber sleeve are respectively in contact with the lower end surface of the first stop and the upper end surface of the second stop.

[0010] Furthermore, the lower end side wall of the upper piston sleeve is evenly distributed with more than two notches along the circumferential direction, the notches are all open downward, and the length direction of any notch is parallel to the axial direction of the upper piston sleeve.

[0011] Furthermore, the side wall of the rubber sleeve includes more than two thin-walled parts, which are arranged at intervals along the axial direction, and the thickness of any thin-walled part is smaller than the thickness of the adjacent side wall of the rubber sleeve.

[0012] Compared with the prior art, the present invention has a positive and obvious effect. The on-site installation operation of the rainwater pipe sealing device for roof maintenance drain outlets of the present invention is very convenient and quick. The installation operation is completed by lifting the lower piston sleeve to make the clamping block snap into the second recess, which shortens the on-site operation time, improves the installation efficiency, and solves the problem of difficult installation operations. When the rubber sleeve is in a compressed state, more than two thin-walled parts can produce sealing contact surfaces, which increases the sealing area, makes the sealing effect more reliable, avoids leakage problems caused by poor surface conditions of the rainwater pipe, and increases the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the structure of a rainwater pipe sealing device for roof maintenance drain outlets in use.

[0014] Figure 2 Figure 1 A is a schematic diagram of a local enlarged structure.

[0015] Figure 3 The present invention is a schematic structural diagram of a rubber sleeve in a rainwater pipe sealing device for a roof maintenance drain outlet after deformation.

[0016] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of an upper sealing sleeve in a rainwater pipe sealing device for roof maintenance drain outlets.

[0017] Figure 5 The present invention is a schematic top view of the structure of an upper sealing sleeve in a rainwater pipe sealing device for a roof maintenance drain outlet.

[0018] Figure 6 for Figure 5 Schematic diagram of the BB cross-sectional structure.

[0019] Figure 7 for Figure 5 Schematic diagram of the CC cross-sectional structure.

[0020] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a lower sealing sleeve in a rainwater pipe sealing device for roof maintenance drain outlets.

[0021] Fig. 9 The present invention is a schematic top view of the structure of a lower sealing sleeve in a rainwater pipe sealing device for a roof maintenance drain outlet.

[0022] Fig.10 for Fig. 9 Schematic diagram of DD cross-sectional structure.

[0023] Fig.11 for Fig. 9 Schematic diagram of EE cross-sectional structure.

[0024] Fig.12 The present invention is a schematic top view of the structure of a rubber sleeve in a rainwater pipe sealing device for a roof repair drain outlet.

[0025] Fig.13 for Fig.12 Schematic diagram of the FF cross-sectional structure. DETAILED DESCRIPTION

[0026] Example 1

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments, and all similar structures and similar variations of the present invention should be included in the protection scope of the present invention.

[0028] like Figure 1-Figure 13 As shown, a rainwater pipe sealing device for roof maintenance drain outlet of the present invention comprises an upper piston sleeve 3, a lower piston sleeve 4 and a rubber sleeve 5.

[0029] The upper end outer side of the upper piston sleeve 3 is provided with a first stop 6, and the lower end outer side of the upper piston sleeve 3 is provided with more than two clamping blocks 7 along the circumferential direction.

[0030] A second stop 8 is provided on the outer side of the lower end of the lower piston sleeve 4, and more than two first notches 9 and more than two second notches 10 are provided in the side wall of the lower piston sleeve 4 along the circumferential direction. The first notch 9 is provided above the second notch 10. The size and position of the first notch 9 and the second notch 10 correspond to the block 7. An auxiliary plate 12 is provided on the inner wall of the lower end of the lower piston sleeve 4.

[0031] The upper piston sleeve 3 is arranged in the lower piston sleeve 4, and the rubber sleeve 5 is sleeved on the outer sides of the upper piston sleeve 3 and the lower piston sleeve 4. The upper end surface and the lower end surface of the rubber sleeve 5 are respectively in contact with the lower end surface of the first stop 6 and the upper end surface of the second stop 8.

[0032] Furthermore, more than two slots 11 are evenly distributed in the circumferential direction in the lower end side wall of the upper piston sleeve 3 , and the slots 11 are all open downward, and the length direction of any slot 11 is parallel to the axial direction of the upper piston sleeve 3 .

[0033] Furthermore, the side wall of the rubber sleeve 5 includes more than two thin-walled portions 13 , and the thin-walled portions 13 are arranged at intervals along the axial direction. The thickness of any thin-walled portion 13 is smaller than the thickness of the adjacent side wall of the rubber sleeve 5 .

[0034] The working process of this embodiment is as follows: during on-site operation, the rainwater pipe 2 is sleeved on the outer periphery of the roof drain outlet 1, the block 7 of the upper piston sleeve 3 is inserted into the first recess 9 of the lower piston sleeve 4, the rubber sleeve 5 is sleeved on the outside of the upper piston sleeve 3 and the lower piston sleeve 4 and between the first stop 6 and the second stop 8, and then the sealing device is lowered along the roof drain outlet 1 to a preset position, and the lower piston sleeve 4 is lifted upward through the auxiliary plate 12 using a tool, so that the block 7 of the upper piston sleeve 3 is inserted into the second recess 10 of the lower piston sleeve 4, and the rubber sleeve 5 is squeezed so that the rubber sleeve 5 is axially compressed, forcing the side wall or thin-walled portion 13 of the rubber sleeve 5 to be radially bent and deformed and in close contact with the inner wall of the rainwater pipe 2, thereby completing the installation operation.

[0035] The notch 11 facilitates the upper piston sleeve 3 to be deformed and reduced, and facilitates the clamping block 7 to be clamped into the first notch 9 and the second notch 10 .

[0036] The sealing device of the present invention is very convenient and quick to install on site. The installation operation is completed by lifting the lower piston sleeve 4 so that the clamping block 7 is clamped into the second recess 10, which shortens the on-site operation time, improves the installation efficiency, and solves the problem of difficult installation operation. When the rubber sleeve 5 is in a compressed state, more than two thin-walled portions 13 can generate sealing contact surfaces, which increases the sealing area, makes the sealing effect more reliable, avoids leakage problems caused by poor surface conditions of the rainwater pipe 2, and increases the service life.

Claims

1. A rainwater pipe sealing device for roof maintenance drain outlet, characterized in that: It comprises an upper piston sleeve (3), a lower piston sleeve (4) and a rubber sleeve (5). The upper end of the upper piston sleeve (3) is provided with a first stop (6) on the outer side, and the lower end of the upper piston sleeve (3) is provided with more than two clamping blocks (7) along the circumferential direction on the outer side. A second stop (8) is arranged on the outer side of the lower end of the lower piston sleeve (4), and two or more first notches (9) and two or more second notches (10) are arranged in the side wall of the lower piston sleeve (4) along the circumferential direction. The first notch (9) is arranged above the second notch (10), and the size and position of the first notch (9) and the second notch (10) correspond to the block (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), and the rubber sleeve (5) is sleeved on the outer sides of the upper piston sleeve (3) and the lower piston sleeve (4). The upper end surface and the lower end surface of the rubber sleeve (5) are respectively in contact with the lower end surface of the first stop (6) and the upper end surface of the second stop (8).

2. A rainwater pipe sealing device for roof maintenance drain outlet according to claim 1, characterized in that: The lower end side wall of the upper piston sleeve (3) is evenly distributed with more than two notches (11) along the circumferential direction, the notches (11) are all open downward, and the length direction of any notch (11) is parallel to the axial direction of the upper piston sleeve (3).

3. A rainwater pipe sealing device for roof maintenance drain outlet according to claim 1, characterized in that: The side wall of the rubber sleeve (5) comprises more than two thin-walled portions (13), the thin-walled portions (13) being arranged at intervals along the axial direction, and the thickness of any thin-walled portion (13) is smaller than the thickness of the adjacent side wall of the rubber sleeve (5).

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