Half joint sealing gasket

Abstract

The invention belongs to the technical field of pipeline emergency repair, and in particular relates to a half joint sealing pad. The present invention includes two semi-arc sealing rings arranged opposite to each other and sealing strips arranged at the ends of the two sealing rings for connecting each other. The cross-sectional shape of the part is a trapezoidal or stepped structure that gradually extends from the outer side of the sealing ring to the inside or decreases in steps, and the snap-in part forms a snap-fit ​​fit with the corresponding part of the outer shell. From the completion of its assembly to the process of use, the snap-fit ​​fit between its snap-fitting part and the shell can not only play an auxiliary positioning and fixing role, but even rely on the snap-fit ​​fit formed between the two to completely realize its structure The stable performance on the board eliminates the requirement of the bonding process during assembly, which not only realizes the initial high sealing requirements, but also greatly reduces the production and production costs, which meets the actual economic benefit needs of the enterprise.

Description

technical field [0001] The invention belongs to the technical field of pipeline emergency repair, and in particular relates to a half joint sealing pad. Background technique [0002] The half joint is a device that seals and wraps the leakage or damage of the pipeline to achieve rapid repair. Its structure is simple, and it only needs two half joint shells installed opposite to each other and set on the joint surface of the half joint shell. It can be composed of two pieces of gaskets, and it is easy to install. When in use, put the two shells together at the water leakage and tighten the nuts to complete the emergency repair of the pipeline; this device can not only save the time of water stoppage, but also reduce the cost of emergency repairs , so it is widely used. Specifically, it includes semi-arc sealing rings arranged on both sides, and a sealing strip connecting each other is provided between the ends of the sealing rings. The end-to-end connection between the above...

AI Technical Summary

Problems solved by technology

In the prior art, the lower half of the sealing ring or sealing strip is usually chamfered for easy insertion; from the cross-section of the sealing ring, the overall shape is a trapezoidal block with a large inner side and a small outer side. It ensures that the gasket can be assembled into the sinker faster. However, due to differences in the bonding effect of the adhesive, the harsh and complex environment during specific use, and even some alternative assembly structures that are directly clamped without bonding, etc. As a result, the gasket is very easy to fall off from the shell, especially for the structure that only relies on the gasket to be directly clamped with the sinker on the shell, the trapezoidal structure with a small outside and a big inside will cause it to drop. Occurs from time to time, which brings great inconvenience to the construction personnel's rapid maintenance and construction

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