CN204403594U - A kind of band spiral fluted construction drainage plastic standing tube - Google Patents
A kind of band spiral fluted construction drainage plastic standing tube Download PDFInfo
- Publication number
- CN204403594U CN204403594U CN201420868285.6U CN201420868285U CN204403594U CN 204403594 U CN204403594 U CN 204403594U CN 201420868285 U CN201420868285 U CN 201420868285U CN 204403594 U CN204403594 U CN 204403594U
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- Prior art keywords
- standing tube
- spiral fluted
- spiral
- plastic standing
- construction drainage
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Abstract
The utility model discloses a kind of band spiral fluted construction drainage plastic standing tube, comprise plastic standing tube body, in plastic standing tube inner body wall, the coaxial circumference of standpipe axial direction is provided with some spiral chutes, the joint of spiral fluted bottom land and cell wall and the joint of spiral fluted notch and plastic standing tube inner body wall are arc transition structure.The joint of spiral fluted bottom land and cell wall and the joint of spiral fluted notch and plastic standing tube inner body wall are arc transition structure, spiral chute of the present utility model is made to be the little streamlined arcuate structure that namely radius of curvature is large of curvature, according to the theory of fluid wall attachment effect, avoid the situation that current direction standpipe centralized movement produces water plug flow, reduce the fluctuation of overpressure, improve the drain discharge in certain pressure wave range, also avoid the alternately impinge of current to tube wall, pipe vibration and draining noise are reduced greatly.
Description
Technical field
The utility model relates to construction drainage pipe field, and particularly a kind of have the band spiral fluted construction drainage plastic standing tube preventing the advantages such as floor drain deodorization, reduction current noise, drainage capacity are strong.
Background technique
Plastic tube is the tubing that a kind of construction drainage is conventional, but due to plastic tube inner wall smooth, surface friction drag is little, during for construction drainage standpipe, water velocity is higher, when flow is slightly large, easily forms water plug flow (water plug flow: when referring to construction drainage standpipe for gravity drainage, when flow is excessive, is attached to the water film thickness of the tube wall current that affect that are excessive or that be subject to structure and forms central water body and fall in pipeline, form the group's plug-like current fallen in pipeline.Under this streamflow regime, current are little by pipe friction drag effects, and lower speed is fallen soon, formed under gravity and accelerate flowing.Build-up of pressure fluctuation is violent, and current noise is large, easily causes toilet floor drain damage of water block, occurs back foul phenomenon.), cause in pipe and occur larger pressure surge and toilet back foul.This disadvantage limits the raising of plastic tube drainage capacity.In order to address this problem, nearly more than ten years, a kind of novel internal spiral plastic drain pipe was developed out, and by wide popularization and application.
See shown in Fig. 1 to Fig. 3, the structure characteristic of current internal spiral plastic drain pipe 10 is the triangle spiral ribbed steel wires 12 at pipe material inner wall 11 with several constant pitch certain altitudes, and the root of triangle spiral ribbed steel wire 12 and the joint 13 of pipe material inner wall 11 are without arc transition.The object of triangle spiral ribbed steel wire 12 is that the current making to fall along tube wall form spirality attached wall current (the attached wall current of spirality: when referring to construction drainage standpipe for gravity drainage, current are attached to inner-walls of duct and fall twist, form the membranaceous current of spirality fallen along inner-walls of duct.Under this streamflow regime, current reduce in the falls downward speed of pipe friction resistance and rotary centrifugal force, are formed and at the uniform velocity flow, and water film thickness increases.Be conducive to improving pipe drainage performance, reduce pressure surge, prevent toilet floor drain back foul, reduce current noise, improve drainage capacity.), reduce current falling speed, increase pipe friction resistance, to reach pressure surge when reducing standpipe draining, prevent floor drain damage of water block, reduce the generation of toilet back foul phenomenon.When drain discharge is less, overpressure fluctuation and current falling speed obviously reduce.Internal spiral plastic drain pipe 10 drainage capacity also comparatively light wall plastic tube increase.
But when reality uses and drainage capacity is tested, when water displacement increases, in internal spiral plastic drain pipe 10, produce larger pressure surge and vibration noise.Shown in composition graphs 4, its reason is: the impact 1) being subject to gravity and pipe friction resistance, and the current 1 fallen along tube wall cross triangle spiral ribbed steel wire 12 along tube wall flowing, cannot form spiral water flow along triangle spiral ribbed steel wire 12; 2) when current 1 fall to flowing through triangle spiral ribbed steel wire 12 surface along tube wall, due to triangle spiral ribbed steel wire 12 surface curvature very big (radius of curvature is minimum), according to fluid wall attachment effect, (wall attachment effect: refer to that fluid (current or air-flow) has and leave original flow direction changes the tendency along with the body surface flowing of protruding into.When there is surface friction between fluid and its body surface of flowing through, the flow velocity of fluid can slow down.As long as the curvature of body surface is not too large, according to the Bernoulli's law in fluid mechanics, the slowing down of flow velocity can cause fluid to be attracted on body surface flowing.) theory, current 1 have and leave the strong tendency of curvature maximal face to standpipe central motion, and water displacement is larger, and current 1 are larger to the water yield of standpipe central motion.Cause current 1 big ups and downs in pipe, form the water plug flow that alternately impinge tube wall falls, air-flow path in chock tube, build-up of pressure fluctuation sharply raises, and noise increases, thus occurs damage of water block, the generation of toilet back foul phenomenon.
Model utility content
The purpose of this utility model is easily to occur pressure surge when water displacement increases for existing internal spiral plastic drain pipe, destroy the not enough and defect such as water seal, floor drain back foul, noise increase, provide a kind of reach change falling water flow form in soil stack, overpressure fluctuation when reducing draining, the band spiral fluted construction drainage plastic standing tube that reduces falling water flow speed, avoid damage of water block and toilet back foul, reduce draining noise, improve the objects such as drainage capacity.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of band spiral fluted construction drainage plastic standing tube, comprise plastic standing tube body, it is characterized in that, in described plastic standing tube inner body wall, the coaxial circumference of standpipe axial direction is provided with some spiral chutes, the joint of described spiral fluted bottom land and cell wall and the joint of described spiral fluted notch and described plastic standing tube inner body wall are arc transition structure.
In a preferred embodiment of the present utility model, described spiral fluted bottom land is indent arc shaped surface.
In a preferred embodiment of the present utility model, described spiral fluted groove depth is 1.5 ~ 2mm, and groove width is 8 ~ 10mm, the fillet radius 2 ~ 5mm of described arc transition structure.
In a preferred embodiment of the present utility model, described some spiral chutes are along point distributions such as tube section circumferencial directions.
In a preferred embodiment of the present utility model, described spiral chute is 6 ~ 12, and adjacent two spiral fluted pitch are 500 ~ 760mm.
In a preferred embodiment of the present utility model, it is one-body molded that described plastic standing tube body and some spiral chutes adopt plastic materials thermoplastic to extrude.
In a preferred embodiment of the present utility model, described plastic materials is polyethylene or polypropylene or PVC＝polyvinyl chloride.
In a preferred embodiment of the present utility model, described spiral fluted Hand of spiral is seen as counterclockwise from top to bottom along axis.
Owing to have employed technological scheme as above, the beneficial effects of the utility model are: the joint of spiral fluted bottom land and cell wall and the joint of spiral fluted notch and plastic standing tube inner body wall are arc transition structure, spiral chute of the present utility model is made to be the little streamlined arcuate structure that namely radius of curvature is large of curvature, according to the theory of fluid wall attachment effect, when in-pipe flow falls along tube wall, current are attracted to tube wall and can not leave, form good attached wall water film flow pattern, avoid the situation that current direction standpipe centralized movement produces water plug flow, reduce the fluctuation of overpressure, improve the drain discharge in certain pressure wave range, also avoid the alternately impinge of current to tube wall, pipe vibration and draining noise are reduced greatly.Moreover be subject to the effect of pipe friction resistance by the current adsorbed, falling speed reduces greatly, avoid destroying water seal, prevent floor drain back foul.Because falling water flow is attracted to tube wall, add the effect of pipe friction resistance to current, the current descent path of helical curve wire extends the water movement length of unit height of drop simultaneously, and current falling speed is reduced further.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the surface structure schematic diagram of the internal spiral plastic drain pipe of currently available technology.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
The flowing state schematic diagram of current in the internal spiral plastic drain pipe pipe of prior art when Fig. 4 is water displacement increase.
Fig. 5 is the surface structure schematic diagram of a kind of embodiment of the utility model.
Fig. 6 is the A-A sectional view of Fig. 5.
Fig. 7 is the B-B sectional view of Fig. 5.
Fig. 8 is the perspective view of a kind of embodiment of the utility model.
The flowing state schematic diagram of current in a kind of embodiment's pipe of the utility model when Fig. 9 is water displacement increase.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, setting forth the utility model further below.
See the one band spiral fluted construction drainage plastic standing tube shown in Fig. 5 to Fig. 8, comprise plastic standing tube body 100, at plastic standing tube body 100 inwall 110, the coaxial circumference of standpipe axial direction is provided with some spiral chutes 120.
In the present embodiment, spiral chute 120 is 12, along point distributions such as tube section circumferencial directions.The bottom land 121 of spiral chute 120 is arc transition structure with the joint 122 of the joint 121a of cell wall and the notch of spiral chute 120 and plastic standing tube inner body wall 110.In the present embodiment, the bottom land 121 of spiral chute 120 is indent arc shaped surface, and spiral chute 120 curvature is reduced greatly, and namely radius of curvature increases.
In the present embodiment, the groove depth of spiral chute 120 is 1.5 ~ 2mm, and groove width is 8 ~ 10mm, two joint, place 121a, 122 the fillet radius 2 ~ 5mm of arc transition structure, the pitch of adjacent two spiral chutes 120 is 500 ~ 760mm.So the plastic standing tube inner body wall 110 of the present embodiment and spiral chute 120 and both joints are the little streamlined arcuate structure that namely radius of curvature is large of curvature, improve the attached wall effect of current to greatest extent.
According to the theory according to fluid wall attachment effect, shown in composition graphs 9, when in-pipe flow 1a falls along tube wall, current 1a is attracted to plastic standing tube inner body wall 110 and can not leaves, and forms good attached wall water film flow pattern, avoids current 1a produces situation from water plug flow to standpipe centralized movement, reduce the fluctuation of overpressure, improve the drain discharge in certain pressure wave range, also avoid the alternately impinge of current to tube wall, pipe vibration and draining noise are reduced greatly.Moreover be subject to the effect of pipe friction resistance by the current 1a adsorbed, falling speed reduces greatly, avoid destroying water seal, prevent floor drain back foul.Because falling water flow is attracted to plastic standing tube inner body wall 110, add the effect of pipe friction resistance to current, the current descent path of helical curve wire extends the water movement length of unit height of drop simultaneously, and current falling speed is reduced further.
Due to earth autobiography direction, the Hand of spiral of spiral chute 120 can be determined according to specified place, and such as, when place to use is positioned at the northern hemisphere, the Hand of spiral of spiral chute 120 is seen as counterclockwise, to improve water flow rotary effect along axis from top to bottom.
It is one-body molded that plastic standing tube body of the present utility model 100 and some spiral chutes 120 adopt plastic materials thermoplastic to extrude, and plastic materials is polyethylene or polypropylene or PVC＝polyvinyl chloride, and the utility model conveniently makes processing.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a band spiral fluted construction drainage plastic standing tube, comprise plastic standing tube body, it is characterized in that, in described plastic standing tube inner body wall, the coaxial circumference of standpipe axial direction is provided with some spiral chutes, the joint of described spiral fluted bottom land and cell wall and the joint of described spiral fluted notch and described plastic standing tube inner body wall are arc transition structure.
2. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 1, it is characterized in that, described spiral fluted bottom land is indent arc shaped surface.
3. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 2, it is characterized in that, described spiral fluted groove depth is 1.5 ~ 2mm, and groove width is 8 ~ 10mm, the fillet radius 2 ~ 5mm of described arc transition structure.
4. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 3, it is characterized in that, described some spiral chutes are along point distributions such as tube section circumferencial directions.
5. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 3, it is characterized in that, described spiral chute is 6 ~ 12, and adjacent two spiral fluted pitch are 500 ~ 760mm.
6. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 3, it is characterized in that, it is one-body molded that described plastic standing tube body and some spiral chutes adopt plastic materials thermoplastic to extrude.
7. the one band spiral fluted construction drainage plastic standing tube as described in claim as arbitrary in claim 1 to 6, is characterized in that, described plastic materials is polyethylene or polypropylene or PVC＝polyvinyl chloride.
8. a kind of band spiral fluted construction drainage plastic standing tube as claimed in claim 7, it is characterized in that, described spiral fluted Hand of spiral is seen as counterclockwise from top to bottom along axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868285.6U CN204403594U (en) | 2014-12-30 | 2014-12-30 | A kind of band spiral fluted construction drainage plastic standing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868285.6U CN204403594U (en) | 2014-12-30 | 2014-12-30 | A kind of band spiral fluted construction drainage plastic standing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204403594U true CN204403594U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420868285.6U Withdrawn - After Issue CN204403594U (en) | 2014-12-30 | 2014-12-30 | A kind of band spiral fluted construction drainage plastic standing tube |
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| CN (1) | CN204403594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565565A (en) * | 2014-12-30 | 2015-04-29 | 上海深海宏添建材有限公司 | Building drainage plastic stack with spiral grooves |
-
2014
- 2014-12-30 CN CN201420868285.6U patent/CN204403594U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565565A (en) * | 2014-12-30 | 2015-04-29 | 上海深海宏添建材有限公司 | Building drainage plastic stack with spiral grooves |
| CN104565565B (en) * | 2014-12-30 | 2016-06-15 | 上海深海宏添建材有限公司 | A kind of band spiral fluted construction drainage plastic standing tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150617 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |