Connecting structure for pipes with equal diameter

Abstract

The invention discloses a connecting structure for pipes with the equal diameter and belongs to the technical field of pipeline connection. The connecting structure for the pipes with the equal diameter comprises a pipe fitting and the pipes. One end of each pipe is connected with the pipe fitting. An outer sealing ring and an inner sealing ring are arranged between the pipe fitting and each pipe. A groove structure and a protruding structure corresponding to the groove structure are arranged on the contact face of the pipe fitting and the contact face of each pipe respectively. According to the technical scheme, the groove structures are formed in the inner wall of the pipe fitting, the protruding structures are arranged on the outer walls of the pipes, when the pipe fitting is connected with the pipes, the groove structures are matched with the protruding structures, and the convenient mounting effect can be achieved without auxiliary tools; the inner sealing rings and the outer sealing rings are arranged between the connecting faces of the pipe fitting and the pipes, internal and external dual sealing is achieved, and a good sealing effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of pipeline connection, and relates to a pipeline transfer structure in plumbing facilities, in particular to an equal-diameter pipe connection structure. Background technique [0002] At present, there are many varieties of plastic (PP-R) pipe fittings in the plumbing market. Generally, rigid pipes need to be transferred through two-way pipe fittings at the corners, and they need to be transferred through pipes such as three-way and four-way pipes at the branch of the pipeline. Usually, the diameter of the interface of metal two-way, three-way and four-way pipe fittings will be larger than the diameter of the pipe orifice to be connected, and the two are connected by thread, but plastic pipe fittings and pipes are not suitable for threaded connection due to their poor processing performance. With the gradual improvement of people's quality requirements for industrial products, there have been equal-diameter...

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Problems solved by technology

[0003] However, the disadvantage of connecting hot-melt plastic pipe fittings and equal-diameter pipes is that, on the one hand, special equipment is needed to assist, and the operation is very inconvenient, especially when installing at high altitude or in a narrow space, the installation work will become more difficult; on the other hand On the one hand, when two equal-diameter pipes are connected, they also need to pass through pipe joints, which makes the shape and structure relatively bloated; in addition, due to the technological requirements of hot melting, and at the same time to ensure that the joints of pipe fittings are firm, it is necessary to ensure a thicker pipe wall thickness, so that the use of pipe fittings More materials, increased production costs

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