PVC spiral drainage is more and more widely used in the process of decoration. The following edition focuses on introducing the characteristics of PVC spiral drainage.
(1) Shaping a prominent triangular spiral rib with a height of 3 mm and the influence of diversion. The spiral pipe flow of the pipe wall falls down along the tube wall, forming a more stable and denser landing of the ultimate velocity of the outlet water of the air column in the control center of the water film cyclone, which significantly reduces the pressure fluctuation in the lifting pipe, remarkably improves the drainage ability and effectively enhances the pipe, strength and stiffness. 。
(2) Ordinary fittings of pipe fittings, the level of side water pipe risers are connected by special three or four pipe fittings to prevent the impact of the reduction of transverse flow, which is conducive to the rotation of water falling along the side wall.
(3)排水，噪音低。据建材是在上海和福建建材研讨院实地丈量，内壁润滑的PVC管排水的噪音比传统的铸铁管道4分贝。同济大学完善的研讨，在1996年10月，螺旋和光管的比照测试结果的螺旋焊管比光管，低50％，比铸铁管噪音小5到7分贝的噪音。曾经证明，大量的工程实例，螺旋只会听到沙沙作响的声音，真正起到消声器的作用。(3) Drainage, low noise. According to the measurement of building materials in Shanghai and Fujian Building Materials Seminar, the noise of drainage of PVC pipe lubricated by inner wall is 4 dB higher than that of traditional cast iron pipe. In October 1996, the noise of spiral welded pipes was 50% lower than that of smooth pipes and 5 to 7 decibels lower than that of cast iron pipes. It has been proved that in a large number of Engineering examples, the screw can only hear the rustling sound and really play the role of silencer.
(4) Avoid damage to leaky seals。 Because the drainage system stacks the center of an unblocked air column, the reduced pressure variation in the pipe is formed。 It looks like the negative pressure on the ordinary pipeline system, the damage of the low-value water seal。
(5) Drainage capacity, easy to obstruct, the total cost of the project is 20% to 30%, lower than the traditional cast iron pipeline。
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