Ladder-Lip Type Rubber Ring Sleeve Joint Casting Iron Pipe (GB/T8714-1988)
Casting iron pipe is an important engineering material widely used in municipal water supply and drainage, industry, agriculture, communications and other fields. Ladder-lip type rubber ring sleeve joint cast iron pipe is a kind of ductile iron pipe based on GB/T 8714-1988, of which the most important features are the gasket block joint and the lip-type rubber gasket. This type of pipe is now commonly used in large-scale water supply and drainage projects and some special liquid transportation projects.
The main structure of the ladder-lip type rubber ring sleeve joint cast iron pipe includes a ladder lip, a rubber gasket block, a bell, a ring, an integral spigot, an integral socket and an outer protective sleeve, and the connections are replaced by the gasket block joint. The pipeline is connected by interlocking lugs and the lugs are aligned with the gasket block lubricants on the circular groove. The rubber gasket block contains two layers of rubber: the inner layer is lip-type rubber gasket, the outer layer is O-ring type rubber gasket, the gasket is pressed into the inner surface of bell and socket. When the joint is connected, bell and socket force the gasket block to deform elastically, and the compression force on the lip-type rubber gasket increases. This ensures the gas tightness of the connection. The bell and socket also provide a stop for the rubber gasket, which secures the rubber gasket block in the connection and improves the sealing performance of the pipeline.
The advantages of ladder-lip type rubber ring sleeve joint cast iron pipe lie in its superior air tightness and performance. Because of the combination of lip-type gasket and O-ring type gasket, the sealing performance of the joint is greatly enhanced, and it can reach the required gas tightness when the joint is connected. Its working pressure can reach 10KPa, and its service life can be up to 50 years. The large-diameter pipeline connection adopts a large mixing bell, which is easy to assemble and replace, thus effectively reducing labor intensity. In addition, the structure is simple and the inner wall is smooth. The inner wall design conforms to the principle of minimum flow resistance, which reduces the energy consumption when the fluid passes through the pipe, and the environmental protection effect is good.
In the actual application, ladder-lip type rubber ring sleeve joint cast iron pipe can pass more test standards, and conforms to the requirements of chemical fertilizer pipelines and special fluid pipelines, which can better meet the requirements of various professional pipelines.
In conclusion, ladder-lip type rubber ring sleeve joint cast iron pipe enjoys excellent performance and good sealing performance. It is widely used in water supply and drainage projects, special liquid pipelines, chemical fertilizer pipelines and other fields.
