A kind of stretchable thermal insulation pipe fitting and its production device and method

Abstract

The invention discloses an extendable-and-retractable heat-preservation pipe fitting and a production device and method thereof. The extendable-and-retractable heat-preservation pipe fitting comprises a pipe body. The pipe body is a threaded pipe with the longitudinal section being in a wavelike shape. The pipe body comprises a first aluminum foil layer, steel wires, a second aluminum foil layer, a heat preservation layer and an outer protection layer. The steel wires are wound in a spiral manner, arranged between the first aluminum foil layer and the second aluminum foil layer in a wrapped manner and used for forming a support framework of the pipe body. The portions, supported by the steel wires, of the pipe body protrude outwards. The heat preservation layer is arranged at the outer side of the second aluminum foil layer in a covering manner, and the outer protection layer is arranged at the outer side of the heat preservation layer in a covering manner. In the production process, the first aluminum foil layer, the steel wires, the second aluminum foil layer, the heat preservation layer and the outer protection layer are sequentially guided in and wound outside a rolling wheel set in a spiral manner so that a round tube can be obtained through rolling, and the round tube is pressed into the threaded pipe through a pressing wheel. The pipe fitting is firm and durable; the service life is prolonged; the heat insulation effect is improved; production cost is lowered; and production efficiency and product quality are improved.

Description

technical field [0001] The invention relates to the technical field of ventilation pipes, in particular to a stretchable thermal insulation pipe fitting and a production device and method thereof. Background technique [0002] Ventilation pipe is a channel used for gas water heaters, range hoods, exhaust fans, air conditioners and other equipment exhaust. Supported by steel wires, the telescopic and bending performance of this ventilation pipe is relatively good, but the existing spiral ventilation pipe is not strong enough, easy to damage, has a low service life, and its thermal insulation effect is relatively poor, and the spiral ventilation pipe It is not easy to produce, the manufacturing cost is high, the efficiency is low, and the quality cannot be guaranteed. Contents of the invention [0003] Aiming at the defects in the prior art, the present invention provides a stretchable thermal insulation pipe fitting and its production device and method, so as to make it st...

AI Technical Summary

Problems solved by technology

[0002] Ventilation pipe is a channel used for gas water heaters, range hoods, exhaust fans, air conditioners and other equipment exhaust. Supported by steel wires, the telescopic and bending performance of this ventilation pipe is relatively good, but the existing spiral ventilation pipe is not strong enough, easy to damage, has a low service life, and its thermal insulation effect is relatively poor, and the spiral ventilation pipe Difficult to produce, high manufacturing cost, low efficiency, and quality cannot be guaranteed

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