CN103759079A

CN103759079A - Low-noise drainage pipeline

Info

Publication number: CN103759079A
Application number: CN201410037705.0A
Authority: CN
Inventors: 李殿奎; 郝一生; 李唯雄
Original assignee: Sanming Xingye Science And Technology (tianjin) Co Ltd
Current assignee: Sanming Xingye Science And Technology (tianjin) Co Ltd
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2014-04-30

Abstract

The invention relates to a low-noise drainage pipeline. The low-noise drainage pipeline comprises a pipeline body. The low-noise drainage pipeline is characterized in that the surface of the inner wall of the pipeline body is provided with a plurality of protrusions to form an unsmooth surface of the inner wall of the pipeline. Compared with the prior art, the low-noise drainage pipeline has the advantages that the protrusions are arranged on the inner wall of the drainage pipeline to form a non-sticky structure, the unsmooth surface is formed on the non-sticky structure, the energy of sound waves is absorbed based on the lotus leaf surface tension principle, a water flow fracture face structure and a local water flow direction are changed, the frequency of noise produced by friction between the water flow and the pipe wall is fairly reduced, resonance produced by noise caused by flowing of fluid in a sewer is weakened, and finally the purpose of lowering noise of the sewer and a water channel is achieved. The experimental result shows that the noiseless effect is obviously superior to that of other pipelines, and the noise of the plastic pipeline is lower than 45 decibels.

Description

Low noise drainage pipe

Technical field

The invention belongs to pipeline, relate in particular to a kind of building plastic low noise drainage pipe that is applicable to.

Background technique

The noise of building drainage pipeline system has become a problem that generally perplexs resident living, is having a strong impact on the mankind's quality of life.Building pipe noise source is mainly from the flow velocity of liquid in pipeline and the pressure producing.Wherein flowing water noise is mainly current and pipe friction and the noise that produces and changes and water (flow) direction changes the noise producing because of active cross-section size.Duct noise produces and along pipeline transmission in pipeline.

At present, domestic first construction drainage pipe-line system noise test cabinet of having set up, investigated and developed < < drainage pipeline noise detection chamber and test method > > standard, pilot development Novel noise reduction plastic tube, the pipe fittings such as water conservancy diversion eccentric three-way, the threeway of dilatation eddy flow.Simultaneously, in order to meet the demand of construction project, four kinds of low noise construction drainage pipeline combinations such as " multi-storey building can be selected the sewerage system of the low noise PVC-U solid wall pipe material combination of water conservancy diversion eccentric three-way pipe piece and 3.2mm wall thickness or 5.2mm wall thickness " have been recommended.Sewerage system test result shows: four kinds of System noises are all lower than the noise of existing building plastic duct system; The low noise sewerage system of dilatation eddy flow tee pipe fitting, water conservancy diversion eccentric three-way pipe piece and the combination of polypropylene silencing tubing, drain discharge≤2.5L/s and≤during 2.0L/s, noise approaches iron drain-pipe road system.Current, the most typical employing spiral hush pipe of the drainage pipe noise-reduction method of China Democratic National Construction Association on market, its cost of production is higher, and noise reduction is unstable and can occupy building and fitting space, increasing building man-hour and difficulty more.Along with the development of tall building, the better drainage pipe of research and development noise reduction is all being made great efforts in countries in the world.

The research and development route of drainage pipe noise reduction is pipeline or spiral hush pipe or the research and development novel PVC pipeline material that installs puigging additional in pipeline outside or adopt above-mentioned increase wall thickness substantially at present.But the market mainstream remains is using conventional pvc pipe road, so the noise of drainage pipe severe jamming and destroy people's normal life quality, even because sleep quality causes mental illness.As application number: 201220194982.9 disclosed building co-layer draining noise-reduction joints, comprise adapter body, this adapter body comprises horizontal arm connecting body, on, lower main riser connecting body, on horizontal arm connecting body has, lower main riser connecting body interface and at least one horizontal interface tube, the bottom of upper main riser connecting body is connected with upper main riser connecting body interface, top is provided with main riser interface, lower main riser connecting body is columnar structured, top is connected with lower main riser connecting body interface, the inwall of this lower main riser connecting body is shaped with spiral bar, horizontal interface tube extends in horizontal arm connecting body by spiral stream guidance water channel.The present invention makes whole main riser spiral water flow continuity, arm current converge through spiral channel and main riser spiral water flow, together along under pipe material inner wall rotating flow, avoid arm current and the collision of standpipe current, guarantee standpipe current helical whereabouts all the time, reduce pipe-line system noise, and also can be connected in smooth inner wall plastic drain-pipe, reduce noise.Described pipe joint is exactly to adopt the Design Mode of spiral hush pipe to carry out noise reduction.The noise reduction of this kind of mode unstable, if in design to the flow velocity of current with pressure is inconsiderate also can increase noise.

Summary of the invention

The object of the invention is to overcome the deficiency of above-mentioned technology, and a kind of low noise drainage pipe is provided, for applying of green building provides product and technical support, for effectively solving the drainage pipe noise problem that disturbs residents, for building quiet comfortable living environment.

The present invention for achieving the above object, by the following technical solutions: a kind of low noise drainage pipe, comprise pipe main body, it is characterized in that: described pipe main body inner wall surface is provided with some projections and forms the unsmooth surfaces of inner-walls of duct.

The unsmooth surface of described inner-walls of duct consists of pipe main body inner wall surface and the TPE elastomeric layer with some projections affixed with it.

The convex surfaces of the some projections in the unsmooth surface of described inner-walls of duct and surface, the lowest point between projection thereof are non-smooth surface.

The shape of cross section of described projection is half downward water-drop-shaped, semicircle, parabola shaped or oval.

Described projection is left and right or the upper and lower symmetrical and asymmetric arrangement that interweaves at inner-walls of duct.

Beneficial effect: compared with prior art, drainage pipe inwall arranges some not viscosity structures that convex to form, its surface forms unsmooth surface, utilize the principle of lotus leaf surface tension force, the vibration energy that absorbs or offset sound wave, has changed active cross-section size and water (flow) direction, reduces current and pipe friction, reduce the noise intensity that flow velocity produces, finally realize reducing noise.Experimental result muting function is obviously better than other pipelines, and plastic pipe noise is less than 45 decibels.

Accompanying drawing explanation

Fig. 1 is cross-sectional view of the present invention;

Fig. 2 is plan structure schematic diagram of the present invention.

Embodiment

Below in conjunction with preferred embodiment, describe the specific embodiment of the present invention in detail.

Embodiment

Refer to accompanying drawing, the invention provides a kind of low noise drainage pipe, comprise pipe main body 1, described pipe main body inner wall surface is provided with some protruding 2 and forms the unsmooth surface of inner-walls of duct.The convex surfaces of the some projections in the unsmooth surface of described inner-walls of duct and surface, the lowest point between projection thereof are non-smooth surface.Convex shape depends on caliber and noise reduction standard.The present embodiment adopts semicircle spherical, because making current, some projections change in direction when the tube wall and speed, weaken water hammer effect, reduce water flow pressure, simultaneously, the interionic interaction of both positive and negative polarity that utilizes the Skin effect of current to produce, weaken compression and the suction of air in body, the air that flows down rapidly and the friction of water are reduced, thereby realize the acoustic noise reducing of drainage pipe.

Preferred version of the present invention is the uniform some projections of described pipe main body inner wall surface, and described projection is left and right or the upper and lower symmetrical and asymmetric arrangement that interweaves at inner-walls of duct.As matrix type is arranged or concentric circle annular even or symmetrical, asymmetric being staggered.The convex surfaces of the some projections in the unsmooth surface of described inner-walls of duct and surface, the lowest point between projection thereof are non-smooth surface.Described non-smooth surface can be with reference to the NBS of machining relevant surfaces roughness.Ra:3.2-6.3,Rz:12.5-25。

Preferred version of the present invention is: select and the plastic tie very strong TPE elasticity new material of making a concerted effort, make surface with the elastic soft material film 3 of some projections, be bonded into integral body with inboard wall of tube body, make pipe.The anti-acoustic capability of soft material is better.

The present invention on the make can adopt compacting or be injection molded into the plastic-plate that there are some projections on surface, then carries out helical coil and be coiled into pipe, or utilizes and make the direct extrusion modling inwall of mould with protruding fixed length circular pipe.

The above, be only preferred embodiment of the present invention, not structure of the present invention done to any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technological scheme of the present invention.

Claims

1. a low noise drainage pipe, comprises pipe main body, it is characterized in that: described pipe main body inner wall surface is provided with some projections and forms the unsmooth surface of inner-walls of duct.

2. low noise drainage pipe according to claim 1, is characterized in that: the unsmooth surface of described inner-walls of duct consists of pipe main body inner wall surface and the TPE elastomeric layer with some projections affixed with it.

3. low noise drainage pipe according to claim 1 and 2, is characterized in that: the convex surfaces of the some projections in the unsmooth surface of described inner-walls of duct and surface, the lowest point between projection thereof are non-smooth surface.

4. low noise drainage pipe according to claim 3, is characterized in that: the shape of cross section of described projection is half downward water-drop-shaped, semicircle, parabola shaped or oval.

5. low noise drainage pipe according to claim 4, is characterized in that: described projection is left and right or the upper and lower symmetrical and asymmetric arrangement that interweaves at inner-walls of duct.