CN2584993Y - Multipurpose flexible hose - Google Patents
Multipurpose flexible hose Download PDFInfo
- Publication number
- CN2584993Y CN2584993Y CN 02289128 CN02289128U CN2584993Y CN 2584993 Y CN2584993 Y CN 2584993Y CN 02289128 CN02289128 CN 02289128 CN 02289128 U CN02289128 U CN 02289128U CN 2584993 Y CN2584993 Y CN 2584993Y
- Authority
- CN
- China
- Prior art keywords
- enhancement layer
- negative pressure
- layer
- pressure
- flexible hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a multipurpose flexible hose, which belongs to the technical field of a hose. The multipurpose flexible hose is used for overcoming the shortages of the existing hoses, and can reliably work for a long time under a positive-negative pressure state. A wall of the hose is composed of three layers which are a PVC negative-pressure enhancement layer, a positive-pressure enhancement layer formed by high strength fibre woven fabric, and a protective layer from inside to outside. A high-strength elastic skeleton is arranged in the negative-pressure enhancement layer. The three layers are melted into one unit. The utility model can reliably work for a long term under positive-negative pressure, and is adapt to wide work occasions. By tests, the utility model can work for a long term under the condition that work pressure is less or equal to 5MPa or vacuum testing pressure is more or equal to 35 KPa, and temperature range is within-20 DEG C to 65 DEG C, and can not generate a delamination or fracture phenomenon; the appearance of the hose has no marked change.
Description
Technical field
The utility model relates to a kind of multipurpose soft tube of carrying liquid, gas or solid material, belongs to flexible pipe
Technical field.
Background technique
The flexible pipe of industrial or civilian conveying liquid, gas, solid is used rubber pipe and plastic tube two big classes more.Owing to reasons such as the material of flexible pipe and structure often can only be born single pressure, can only under the low pressure condition, use as rubber hose, though plastic flexible pipe can use under the mesolow condition, but temperature influence is bigger, the long-term use can be because of material aging generation fragility fracture, and stress relaxation phenomenon easily takes place when working under middle press strip spare, cause product to damage in early days, depress the requirement of long-term work in being difficult to satisfy.In addition, existing rubber and plastic flexible pipe are pressed the operating mode design of uniaxial pressure more, and such as a kind of rubber hose of winding steel wire braid, it can bear very high positive pressure, but when bearing negative pressure, can cause the consequence that inner layer tube wall and Steel Wire Braid come off.And in many cases, require flexible pipe under the situation that positive/negative pressure substitutes, to work again, and perhaps require flexible pipe to be applicable to various working, in this case, existing flexible pipe can not satisfy the real work requirement.
Technical problem to be solved in the utility model is, provide a kind of shortcoming that can overcome conventional hoses, can be under the positive/negative pressure state reliably and with long-term the multipurpose flexible hose of work.
The alleged problem of the utility model is solved by following technological scheme:
A kind of multipurpose flexible hose, its specialization is: the tube wall of described flexible pipe constitutes by three layers, be followed successively by from inside to outside, first layer is a PVC negative pressure enhancement layer, be provided with the high strength elastic skeleton in the negative pressure enhancement layer, the malleation enhancement layer that the second layer forms for the high strength fibre braided fabric, the 3rd layer is protective coating, each construction layer fusion is an one.
The helix of skeleton in the above-mentioned multipurpose flexible hose, described negative pressure enhancement layer for being wound at interval along the flexible pipe axial direction.
Above-mentioned multipurpose flexible hose, the warp of the braided fabric of described malleation enhancement layer and parallel quadrature or the intersection that tilts, or adopt parallel to twine.
Above-mentioned multipurpose flexible hose, the quantity of described negative pressure enhancement layer or malleation enhancement layer is more than two and alternate combinations forms.
Adopt the multipurpose flexible hose of said structure, utilize the anti-negative pressure ability of the spiral skeleton raising flexible pipe of negative pressure enhancement layer, utilize the anti-malleation ability of the braid raising flexible pipe of malleation enhancement layer, therefore, can make flexible pipe reliably and with long-term work under positive/negative pressure, be adapted to more wide in range user demand.Through check, in working pressure≤5MPa or vacuum test pressure 〉=35Kpa, temperature range long-term work under-20 ℃-65 ℃ the condition, delamination or fracture phenomena do not take place, the flexible pipe outward appearance does not have significant change.After the flexible pipe internal and external layer is selected the modified PVC material for use, also can have acid resistant alkali, oil resistant, wear-resisting, in light weight, flexibility is arranged, characteristics such as can coil, its production technology is compared with rubber hose, do not need the latter to produce equipment such as required boiler, vulcanizing oven, have little investment, low energy consumption, pollution-free, but advantages such as the simple high-efficiency and continuous production of technology.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As seen from Figure 1, the structure of multipurpose flexible hose is divided into three layers, is followed successively by from inside to outside: negative pressure enhancement layer 1; Malleation enhancement layer 2; Protective coating 3.The negative pressure enhancement layer that is positioned at the flexible pipe innermost layer is owing to directly contact with the medium of carrying, and inwall requires smooth, smooth, wear-resisting, corrosion-resistant.Present embodiment negative pressure enhancement layer adopts the modified PVC material to make, and it has following advantage: 1. can add acid-proof, alkali prevention, material such as wear-resistant according to the performance of fed sheet of a media, make it to be fit to the more applications occasion; 2. easy and other material combines together; 3. the cost of material is low, and production technology is simple.Certainly, also can choose other material according to usage requirement.Skeleton 4 in the negative pressure enhancement layer mainly is for flexible pipe can be worked under the certain negative pressure state.Need to adopt highly resilient material, be wound in helical at interval, form negative pressure and strengthen skeleton along the axial direction of flexible pipe with certain intensity, and and other material of this layer closely merge.This structure both can make flexible pipe long-term work under negative pressure state not shrink distortion, can make hose bending freely again.Can choose different framework materials according to work requirements, as: macromolecule chemical industry material, metallic material etc.What adopt in the present embodiment is polyethylene or PVC wire rod.
The second layer is the malleation enhancement layer, and the effect of this one deck is to make flexible pipe can bear certain positive pressure.Consider the anti-pressure ability and the pliability requirement of flexible pipe, select for use to have the first layer outside that higher-strength and the good fibrous braid of pliability are wrapped in flexible pipe closely.What adopt in the present embodiment is the h braided fabric.Also can adopt different materials such as ramie cotton fabric, glasscloth, gauze fabric as required.The both available wire rod of this one deck twines, and also can utilize warp and parallel to be woven into twill or positive pattern fabric.
The 3rd layer of flexible pipe that is outermost surface are protective layer, and this one deck mainly is that flexible pipe is formed protective action, and claimed layer has certain intensity and anti-corrosion capacity, and what adopt in the present embodiment is the modified PVC material.Flexible pipe requires each construction layer fusion abundant in working process, it is combined closely be integral.
When needs are made the flexible pipe of bigger rated working pressure, it obviously is not enough relying on the negative pressure or the malleation enhancement layer of individual layer, at this moment, a plurality of negative pressure or malleation enhancement layer need be combined with each other, such as two negative pressure enhancement layers and a malleation enhancement layer, or two or more malleation enhancement layer and one or more negative pressure enhancement layer be combined with each other, at this moment, can improve the ability of the anti-positive/negative pressure of flexible pipe greatly, make it that application widely be arranged.
The utility model and the contrast of rubber hose technical performance are as follows:
Impact elasticity (%) Akron abrasion (cm3/ 1.61km) rubber tube 14 0.11 Multipurpose flexible hoses 17 0.05
Claims (4)
1. multipurpose flexible hose, it is characterized in that: the tube wall of described flexible pipe constitutes by three layers, be followed successively by from inside to outside: first layer is a PVC negative pressure enhancement layer (1), be provided with high strength elastic skeleton (4) in the negative pressure enhancement layer, the malleation enhancement layer (2) that the second layer forms for the high strength fibre braided fabric, the 3rd layer is protective coating (3), and each construction layer fusion is an one.
2. multipurpose flexible hose according to claim 1 is characterized in that: the described helix of skeleton for being wound at interval along the flexible pipe axial direction of stating the negative pressure enhancement layer.
3. multipurpose flexible hose according to claim 2 is characterized in that: the warp of the braided fabric of described malleation enhancement layer and parallel quadrature or the intersection that tilts, or adopt parallel to twine.
4. multipurpose flexible hose according to claim 3 is characterized in that: the quantity of described negative pressure enhancement layer or malleation enhancement layer is more than two and alternate combinations forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289128 CN2584993Y (en) | 2002-12-04 | 2002-12-04 | Multipurpose flexible hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289128 CN2584993Y (en) | 2002-12-04 | 2002-12-04 | Multipurpose flexible hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584993Y true CN2584993Y (en) | 2003-11-05 |
Family
ID=33748769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02289128 Expired - Fee Related CN2584993Y (en) | 2002-12-04 | 2002-12-04 | Multipurpose flexible hose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584993Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022591A (en) * | 2010-11-09 | 2011-04-20 | 李文峰 | Shower hose |
-
2002
- 2002-12-04 CN CN 02289128 patent/CN2584993Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022591A (en) * | 2010-11-09 | 2011-04-20 | 李文峰 | Shower hose |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |