Plastic quarter bend and metal member connection structure

Abstract

The invention discloses a connection structure of a right-angle elbow pipe and a metal part; wherein, a plastic connecting flange (3) is arranged on the plastic part right-angle elbow pipe (1); a metal part connecting flange surface (6) is arranged on a metal part (2); the plastic connecting flange (3) is tightly connected with the metal part connecting flange surface (6) to realize the connection of the plastic right-angle elbow pipe (1) and the metal part (2). The technical proposal is adopted to enable the connection structure to have the advantages of high temperature resistance, erosion resistance, firm combination, enduring greater force effect, well realizing the connection of the plastic part and the metal part, uneasy malfunction and looseness, reliable sealing, simpler process, low cost and high practical value.

Description

technical field [0001] The invention belongs to the technical field of the connection structure of mechanical parts, in particular, the invention relates to a connection structure between a plastic right-angle elbow and a metal part. Background technique [0002] At present, the connection structure between plastic material parts and metal parts, such as the connection between plastic connecting pipes and metal parts, is widely used in various industries and various industrial products, such as metal valves and pipe fittings. [0003] Although the connection method is different, most of the connection structure is to realize the connection of plastic parts and metal parts by injection molding. This is done by applying an organic or inorganic primer to the metal part, then heating the metal part, followed by hot dipping the metal part in a fluid bed of plastic material, and overmolding with plastic material by injection molding metal parts. [0004] The disadvantage of the ...

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Problems solved by technology

[0004] The disadvantage of the above structural scheme is that the bonding strength of the connection between plastic parts and metal parts is low, especially under the conditions of high temperature, high-intensity movement and strong external corrosion, it is easy to loosen, lose the function of connection, and the sealing performance is not good

Especially right-angle elbows are more likely to be rotated under force, which will loosen the joint surface and cause the above-mentioned connection to fail.

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