Segment sealing mechanism

Abstract

The utility model discloses a pipe piece sealing mechanism which comprises a fan-ring-shaped pipe piece, an annular groove is formed in the side wall of the pipe piece, a sealing rubber strip is arranged in the annular groove, the width of the rubber strip close to one side of the pipe piece is the same as that of the annular groove, the thickness of the rubber strip is larger than the depth of the annular groove, and hot-melt pressure-sensitive adhesive is coated on the side wall of the rubber strip. And the adhesive tape and the duct piece are tightly bonded together. The hot-melt pressure-sensitive adhesive is coated on the side wall of the adhesive tape close to one side of the duct piece through a hot-melt adhesive machine, so that the adhesive tape is environment-friendly, can be directly used and has no solidification time, the adhesive tape can be directly and tightly bonded with the duct piece, position deviation is avoided, workers do not need to use strong glue, the operation is simple and convenient, time and labor are saved, the construction speed is 5-8 times of that of the prior art, and the construction efficiency is greatly improved. And the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of segment sealing, and particularly relates to a segment sealing mechanism. Background Art

[0002] During the construction of pipelines, in order to ensure the stability of the pipeline structure and avoid the occurrence of collapse accidents, it is necessary to lay segments that can form a cylindrical shape in the pipeline to provide reliable support for the pipeline. Since there are gaps at the joints of the segments, in order to prevent water from seeping along the gaps, it is necessary to perform waterproof operations on the segments. Currently, generally, workers use brushes to apply strong glue to the joints between the grooved openings of the pipeline and the rubber strips, and then bond the two together. Since the strong glue is liquid and takes some time to solidify, when the rubber strips are placed into the grooved openings on the segments, it is easy for the positions to shift, resulting in cumbersome and difficult operations, time-consuming and laborious, and low work efficiency. Content of the Utility Model

[0003] In order to solve the above problems, the utility model provides a segment sealing mechanism.

[0004] The utility model is realized as follows: A segment sealing mechanism includes fan-shaped segments. A plurality of the segments can enclose a cylindrical barrel structure to provide reliable support for the pipeline. A ring groove is formed on the side wall of the segment near the outer wall to define the position of the rubber strip. A sealing rubber strip is arranged in the ring groove. When the segments are closely abutted against each other, the rubber strip is extruded and deformed to block the gap between the segments, thereby completing waterproofing. The width of the rubber strip near one side of the segment is the same as the width of the ring groove to limit the rubber strip and enable the rubber strip to be quickly connected to the segment. The depth of the ring groove is 2 mm to 4 mm to reliably place the end of the rubber strip in the ring groove. The thickness of the rubber strip is 1.5 cm to 2 cm to ensure a reliable amount of extrusion deformation. A hot melt pressure-sensitive adhesive is coated on the side wall of the rubber strip near one side of the segment through a hot melt adhesive machine. The rubber strip is closely bonded to the segment. The hot melt pressure-sensitive adhesive is a new type of adhesive tape mainly made by mixing synthetic rubber, resin, rubber oil, etc. and heating them into a molten state and then coating them on substrates such as release films. It does not use solvents, is more conducive to environmental protection and safe production, has high production efficiency, and relatively low production costs.

[0005] Preferably, a plurality of first through grooves are uniformly formed on the side wall of the rubber strip near one side of the segment, and a plurality of second through grooves are uniformly formed in the rubber strip. This not only reduces the weight of the rubber strip, facilitating carrying and use, but also makes the rubber strip more likely to deform when being extruded, thereby reliably blocking the gap between the segments.

[0006] Preferably, the material of the rubber strip is ethylene propylene diene monomer (EPDM), which has excellent oxidation resistance, corrosion resistance and aging resistance, and can be used for a long time in high-temperature, high-humidity and high-oxidation environments without easy aging and deterioration.

[0007] The beneficial effects of the present utility model are as follows: The hot melt pressure-sensitive adhesive is coated on the side wall of the rubber strip close to the segment by a hot melt adhesive machine, which is environmentally friendly and can be directly used without a setting time. The rubber strip can be directly and tightly bonded to the segment without position deviation. Workers do not need to use strong glue, and the operation is simple and convenient, saving time and effort. The construction speed is 5 to 8 times that of the previous one, greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram when the segment is connected to the rubber strip;

[0009] Figure 2 It is a schematic structural diagram of the segment;

[0010] Figure 3 It is a schematic structural diagram of the rubber strip;

[0011] Figure 4 It is a sectional view when the rubber strip is connected to the hot melt pressure-sensitive adhesive;

[0012] In the figure: 1. Segment; 2. Annular groove; 3. Rubber strip; 4. Hot melt pressure-sensitive adhesive; 5. First through groove; 6. Second through groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] In order to more clearly understand the technical solution of the present utility model, the present utility model will be further described below with reference to the accompanying drawings.

[0014] As Figures 1-4A segment sealing mechanism as shown includes a segment 1 in a sector-annular shape. A plurality of the segments 1 can form a cylindrical barrel structure to reliably support a pipeline. A ring groove 2 is formed on the side wall of the segment 1 near the outer wall to define the position of a rubber strip 3. A sealing rubber strip 3 is arranged in the ring groove 2. When the segments 1 are tightly abutted against each other, the rubber strip 3 is extruded and deformed to block the gap between the segments 1, thereby completing waterproofing. The rubber strip 3 is made of ethylene propylene diene monomer (EPDM) rubber, which has excellent oxidation resistance, corrosion resistance and aging resistance, and can be used for a long time in high-temperature, high-humidity and high-oxidation environments without being easily aged and deteriorated. The width of the rubber strip 3 on one side close to the segment 1 is the same as the width of the ring groove 2 to limit the rubber strip 3 and enable the rubber strip 3 to be quickly connected to the segment 1. The depth of the ring groove 2 is 3 mm to reliably place the end of the rubber strip 3 in the ring groove 2. The thickness of the rubber strip 3 is 1.8 cm to ensure a reliable amount of extrusion deformation. A hot melt pressure-sensitive adhesive 4 is coated on the side wall of the rubber strip 3 on one side close to the segment 1 by a hot melt adhesive machine. The rubber strip 3 and the segment 1 are tightly bonded together. The hot melt pressure-sensitive adhesive 4 is a new type of adhesive tape made by mixing synthetic rubber, resin, rubber oil, etc. and heating them into a molten state and then coating them on a substrate such as a release film. It does not use solvents, is more environmentally friendly and safe for production, has high production efficiency and relatively low production cost.

[0015] Three first through grooves 5 are evenly formed on the side wall of the rubber strip 3 on one side close to the segment 1, and four second through grooves 6 are evenly formed in the rubber strip 3, which not only reduces the weight of the rubber strip 3, facilitates carrying and use, but also makes the rubber strip 3 more likely to be deformed when being extruded, so as to reliably block the gap between the segments 1.

[0016] The hot melt pressure-sensitive adhesive 4 is coated on one end of the rubber strip 3 provided with the first through groove 5 by a hot melt adhesive machine, and the other side of the hot melt pressure-sensitive adhesive 4 is covered and protected by a release film. During use, the release film on the hot melt pressure-sensitive adhesive 4 is torn off, and the rubber strip 3 is placed in the ring groove 2 on the segment 1 to reliably connect the rubber strip 3 and the segment 1.

[0017] The above is only the preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A segment sealing mechanism, comprising segment rings in a sector-annular shape, and a plurality of said segments can form a cylindrical barrel structure, characterized in that, A ring groove is formed on the side wall of the segment near the outer wall, and a sealing rubber strip is arranged in the ring groove. The width of the rubber strip on the side close to the segment is the same as the width of the ring groove. The depth of the ring groove is 2 mm to 4 mm, and the thickness of the rubber strip is 1.5 cm to 2 cm. A hot melt pressure-sensitive adhesive is coated on the side wall of the rubber strip on the side close to the segment by a hot melt adhesive machine, and the rubber strip is tightly bonded to the segment.

2. The segment sealing mechanism according to claim 1, characterized in that, A plurality of first through grooves are uniformly formed on the side wall of the rubber strip on the side close to the segment, and a plurality of second through grooves are uniformly formed in the rubber strip.

3. A segment sealing mechanism according to claim 1, characterized in that, The material of the rubber strip is ethylene propylene diene monomer rubber (EPDM).

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