CN2268174Y

CN2268174Y - Silencing drain-pipe

Info

Publication number: CN2268174Y
Application number: CN 96246559
Authority: CN
Inventors: 张效慧
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-15
Filing date: 1996-11-15
Publication date: 1997-11-19
Anticipated expiration: 2006-11-15

Abstract

The utility model relates to a silencing drain pipe used for various architectural buildings, particularly for drain pipes for sewage of a sewer of a multi story building. A plurality of spiral rifles presenting spiral convex shapes on the internal surface of the pipe form a plurality of flow guiding channel; the convex spiral rifles can present triangular shapes, rectangular shapes or involute shapes; spiral angles are from 5 DEG to 60 DEG; an air buffer space is arranged between the inner wall and the outer wall of the pipe; the utility model reduces the resistance of fluid and air when the fluid slides down, enlarges flow rate, reduces noise, lightens the weight of pipes, reduces cost and improves physical properties.

Description

A kind of noise reduction waste pipe

A kind of noise reduction waste pipe is used for building constructions, particularly the waste pipe of high-rise building sewerage.

Used its internal surface of waste pipe is cylindrical at present, the disadvantage of noise takes place owing to fluid flowing friction and collision, Patent Office of the People's Republic of China had once announced and had had the pipe of water conservancy diversion with the spirality projection on the CN2063597U internal surface for this reason, forming runner by the slow spirality projection that is concatenated to form many synthetic resin on inner surface of tube abates the noise, but above-mentioned technology also exists shortcoming and defect, it is the rifle formation fluid course that tube inner wall has many spirality projectioies, the structure of this technology, make this kind pipe fitting Heavy Weight, foaming structure on the tube wall also exists certain pinking and certain weight led, the helix of projection is＞any angle of 0 is unpractical, the line of projection is not optimal selection, also exists certain noise and draining water conservancy diversion speed also undesirable.

Shortcoming and defect in view of above-mentioned technology, the purpose of this utility model provides a kind of abundant minimizing noise in light weight, increase drain discharge, have the noise reduction waste pipe in air buffer space on a kind of spiral inner wall of the ring rigidity energy of enhancing pipe and counter-bending and counter-bending and resistance performance and the wall.

The purpose of this utility model can realize by following technical proposals: the spiral rifle that has many water conservancy diversion projectioies on the inner wall surface of noise reduction waste pipe forms the runner of a plurality of fluids, the projection of water conservancy diversion is that to be many helixes, its helix angle that involute profile, rectangle, leg-of-mutton projection come be between 5 °～60 °, this is best selection, at this moment the flow of fluid and free drop are best, fluid fully attached jet changes, to avoid the impact with air.To guarantee reducing noise to greatest extent, strengthened the intensity of caliber and the tensile strength of physics, between inside and outside wall is the air buffer of hollow with the runner position, and such structure makes it in light weight, and noise reduces in a large number simultaneously.

The utility model compared with prior art, drainage rate is fast, good muffling effect, in light weight, the ring rigidity energy and the counter-bending and shock resistance that have strengthened pipe.

Fig. 1 is that the utility model pipe end has triangular hill helix plan view.

Fig. 2 is one section pipe of Fig. 1 broken away view.

Fig. 3 is the pipe end view that the utlity model has triangle helix projection and have tube wall air buffer space.

Fig. 4 is one section view of cutting open of Fig. 3 pipe.

Fig. 5 is the pipe end view that the utlity model has the rectangular preiection helix and have jacket space on the tube wall.

Fig. 6 is the pipe end view that the utlity model has the helix projection helix of involute profile and have jacket space on the tube wall.

Fig. 7 is that the utility model is the stereogram of the part pipe of cutting open of many rectangular preiection helixes on the inner tubal wall.

Fig. 8 the utlity model has the triangular hill helix, and the stereogram of a part of semicanal that is broken away of jacket space on the tube wall is arranged.

1--pipe outer wall, 2--water conservancy diversion slideway, 3--triangular hill helix, 4--jacket space, 5--rectangular preiection helix, 6--involute projection helix.

Specifically describe embodiment of the present utility model in conjunction with the accompanying drawings.

The head that need manufacture different spiral spiral tubing by noise reduction waste pipe shown in the drawings is installed in that extruder can be ST60 * 22 types on the conical double screw extruder, by the Vacuum shaping cooling system, again by the traction of tubing tractor, again through the cutting of cast-cutting saw scale, make different tubing, the specification of tubing is by NBS, and the raw material of tubing is that various synthetic resin raw materials such as polyethylene, PVC, polypropylene ABS all can.

Claims

1, a kind of noise reduction waste pipe, the helix that is many spiral stream guidance projectioies on the inner surface of tube, form many honeycomb ducts, it is characterized in that: the helix of water conservancy diversion projection is involute profile, rectangle or triangle, its helix angle is 5 °～60 °, has the space of air buffer between the inside and outside wall of pipe.