CN202546047U

CN202546047U - Hollow spiral hush pipe with dual noise reduction functions

Info

Publication number: CN202546047U
Application number: CN2012201884167U
Authority: CN
Inventors: 陶然
Original assignee: ANHUI BEISHIDE PLASTIC TECHNOLOGY Co Ltd
Current assignee: ANHUI BEISHIDE PLASTIC TECHNOLOGY Co Ltd
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2012-11-21
Anticipated expiration: 2022-04-27

Abstract

The utility model discloses a hollow spiral hush pipe with dual noise reduction functions, relating to the technical field of drain pipes for construction. The utility model aims to solve the problem that the silencing and noise reduction capacity of the existing spiral hollow hush pipe needs to be enhanced. The hollow spiral hush pipe is a cylinder with an annular cavity and is composed of an inner pipe wall and an outer pipe wall, wherein a plurality of supporting ribs are evenly distributed between the inner pipe wall and the outer pipe wall in the circumferential direction; the internal surface of the inner pipe wall facing the central axis is provided with a plurality of water guide walls which are spirally distributed around the axis; a silencing fiber layer is filled in the annular cavity; and one end of the hush pipe is sealed by a seal plug. The utility model is especially suitable for dust-proofing and dust removal engineering in the industries of electric power, cement, construction materials, chemical engineering, metallurgy, mining and the like.

Description

A kind of hollow helical silencing pipe with dual decrease of noise functions

Technical field

The utility model relates to water-drainage tube part technical field for building, relates in particular to a kind of hollow helical silencing pipe with dual decrease of noise functions.

Background technique

At present, PVC-U waste pipe manufacturer mostly through adopt new technology, new technology, new structure produce the novel tube product and reach the purpose that reduces noise.Usually adopt following several kinds: PVC-U foamed sandwich pipe, spiral inner wall hush pipe, spiral inner wall hush pipe combine the core layer foaming structure.Core layer foaming mainly is through the middle foaming layer obstruct and absorbs the purpose that sound reaches noise reduction; The helical silencing pipe mainly is the purpose that the guide functions of current is played noise reduction through the spiral inner wall muscle.

But the sound-deadening and noise-reducing ability of spiral hollow hush pipe is still waiting further raising in the existing technology.

The model utility content

Need the further problem of its sound-deadening and noise-reducing ability of raising to existing spiral hollow hush pipe, the purpose of the utility model provides a kind of hollow helical silencing pipe with dual decrease of noise functions.

The utility model solves the technological scheme that its technical problem adopted: its cylindrical shell with ring cavity for being made up of an inner tubal wall and an outer tube wall; Between said inner tubal wall and said outer tube wall, along the circumferential direction be evenly equipped with some supporting ribs; The internal surface towards central axis of said inner tubal wall is provided with some around the axis water guide wall that distributes of shape in the shape of a spiral; Be filled with the noise reduction layer of fibers in the said ring cavity, an end of said hush pipe is sealed by sealing plug.

Further, said noise reduction layer of fibers is processed by glass fibre cotton.

Preferably, the angle of said water guide wall and said hush pipe central axis is 9 °～15 °.

Preferably, the cross section of said water guide wall is the triangle of top rounding off.

The effect of the utility model is:

One, dual erasure effect, current tangentially flow into, and avoid into water current and the collision of standpipe current, guarantee that standpipe current helical falls, and form comparatively closely knit rotary water current, greatly reduce the pipe-line system noise; Be filled with the noise reduction fiber in the ring cavity, when sound wave was invaded the noise reduction fiber, its energy can be sucked by a large amount of because of the friction with the fiber and the air pocket that varies in size, and then has stoped the noise of flowing water outwards to be propagated, and has further played the effect of sound-deadening and noise-reducing.

Two, improve ventilation capacity, under the guide functions of standpipe spiral inner wall convexity, current fall along the tube wall helical; Soil stack central authorities form unimpeded air column, improve ventilation capacity, reduce the pipe internal pressure; Increase drainage capacity, the destruction that prevents the floor drain water seal is improved pipeline coefficient safe in utilization.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further;

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the partial sectional view of the utility model;

Label declaration among the figure:

100-hollow helical silencing pipe 101-outer tube wall

102-inner tubal wall 103-supporting rib

104-water guide wall 105-noise reduction layer of fibers

The 106-sealing plug

Embodiment

The hollow helical silencing pipe 100 with dual decrease of noise functions of the utility model is described in conjunction with Fig. 1 and Fig. 2; The cylindrical body with ring cavity of tube wall for constituting by an inner tubal wall 102 and an outer tube wall 101; Between inner tubal wall 102 and outer tube wall 101, be evenly equipped with some supporting ribs 103 vertically, supporting rib 103 is solidified as a whole with inside and outside tube wall and ring cavity is divided into some holes.In its each hole, fill noise reduction layer of fibers 105 after the ring cavity molding and forming, seal the hush pipe port with sealing plug 106 then.Wherein, the preferred glass fibre cotton of noise reduction layer of fibers is processed, and it has advantages such as porosity ratio is big, acoustic absorptivity is big, thermal conductivity is low; Glass fibre cotton itself has characteristics such as heat resisting temperature is high, toughness is good, corrosion-resistant in addition; When sound wave is invaded glass fibre cotton, its energy can because of with the friction of the fiber and the air pocket that varies in size, and sucked by a large amount of; And then stop the noise of flowing water outwards to be propagated, play the effect of sound-deadening and noise-reducing.

On the internal surface of hush pipe central axis, be provided with some water guide walls 104 at inner tubal wall 102.Water guide wall 104 is around the axis convex tendon that distributes of shape in the shape of a spiral, and water guide wall 104 quantity are eight.Water guide wall 104 cross sections are triangular in shape, this leg-of-mutton top rounding off.Water guide wall 104 is 9 °～15 ° with the angle of hush pipe central axis.The thickness of inner tubal wall 102 is less than the thickness of outer tube wall 101.

The angle of swing of water guide wall (being designed to α≤73 °) like the right-handed thread lift angle, in vertical drainage system was used, the current of the helical silencing pipe 100 of flowing through were along water guide wall 104 helical flow of inner tube wall; Reduced the collision of current and air; Avoided the mix in the flow process, the direction of standard fluid reduces " water hammer " influence; Alleviated the impact of current to tube wall; And under the double action of porous tube wall, reducing the noise of pipe-line system greatly, the comparable common tube of draining noise power reduces by 50%.Simultaneously,, so just formed an intermediate air path, realized the smooth and easy discharge of gas in the vertical drainage procedure preferably, thereby avoided the noise that brings out therefrom in discharge pipe line central authorities because current are dirty along inner tube wall spiral rule.In addition; Owing to improved the ventilation capacity of vertical drainage system; Eliminated the air pressure resistance when current fall, current form stable and closely knit current along the discharge pipe line inwall, thereby have improved water passing capacity greatly; The good aeration ability has also realized the stable of pressure in the system, makes the safety in utilization of drainage system to be able to bigger raising.

Those skilled in the art will recognize that; Above-mentioned embodiment is exemplary; Be in order to make those skilled in the art can better understand the utility model content; Should not be construed as is the restriction to the utility model protection domain, changes or modifies so long as disclose spiritual any being equal to of being done according to the utility model, all falls into the utility model protection domain.

Claims

1. hollow helical silencing pipe with dual decrease of noise functions; Its cylindrical shell with ring cavity for constituting by an inner tubal wall and an outer tube wall; Between said inner tubal wall and said outer tube wall, along the circumferential direction be evenly equipped with some supporting ribs; The internal surface towards central axis of said inner tubal wall is provided with some around the axis water guide wall that distributes of shape in the shape of a spiral, and it is characterized in that: be filled with the noise reduction layer of fibers in the said ring cavity, an end of said hush pipe is sealed by sealing plug.

2. hollow helical silencing pipe according to claim 1 is characterized in that: said noise reduction layer of fibers is processed by glass fibre cotton.

3. hollow helical silencing pipe according to claim 1 is characterized in that: the angle of said water guide wall and said hush pipe central axis is 9 °～15 °.

4. hollow helical silencing pipe according to claim 1 and 2 is characterized in that: the cross section of said water guide wall is the triangle of top rounding off.