CN208886173U - ETPU environment-friendly type bellows - Google Patents
ETPU environment-friendly type bellows Download PDFInfo
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- CN208886173U CN208886173U CN201821570019.XU CN201821570019U CN208886173U CN 208886173 U CN208886173 U CN 208886173U CN 201821570019 U CN201821570019 U CN 201821570019U CN 208886173 U CN208886173 U CN 208886173U
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- resistant coating
- erosion resistant
- etpu
- environment
- friendly type
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Abstract
The utility model discloses a kind of ETPU environment-friendly type bellowss, including bellows tube body, the interior erosion resistant coating and the external anti-corrosion layer that are bonded in inside and outside bellows tube body, inside and outside anticorrosive coating is made of the first erosion resistant coating, the second erosion resistant coating and third erosion resistant coating being radially arranged successively, three layers of erosion resistant coating combine, corrosive medium can be prevented directly to contact with tube body, barrier layer by layer is played by shielding and reaches anti-corrosion effect.And protrusion and lower convexity on several is respectively set in the upper and lower surface of the second erosion resistant coating; upper protrusion and lower convexity are respectively embedded in the inside of the first erosion resistant coating and third erosion resistant coating; once the third erosion resistant coating for being higher by height of projection is worn in the long-term use; third erosion resistant coating positioned at raised gap can be got off because of the design of protrusion by protection; and protrusion itself also has anti-corrosive properties; while guaranteeing bellows anti-corrosion; it is greatly improved the durability of its erosion resistant coating, to extend tubing service life.
Description
Technical field
The utility model relates to tubing technical field, in particular to a kind of ETPU environment-friendly type bellows.
Background technique
Bellows refers to the tubular elastomeric sensing element connected into foldable wrinkle piece along folding retractable direction.Bellows
Be widely used in instrument and meter, be mainly used for the measuring cell as pressure measuring instruments, convert pressure into displacement or
Power.Ripple tube wall is relatively thin, and sensitivity is higher, and measurement range is tens of pas to tens of megapascal.Its open end is fixed, sealed end
Increase elasticity in free state, and using the helical spring of auxiliary or reed.Along pipe under the action of internal pressure when work
Sub- elongated lengthwise makes movable end generation and pressure at the displacement of certain relationship.Movable end drives pointer that can directly indicate
The size of pressure.Bellows, which usually combines with displacement sensor, constitutes output as the pressure sensor of electricity, also uses sometimes
Make isolation element.
But due to being easy to appear the phenomenon that being corroded in bellows use process, influence service life.The prior art
In, by the problem of the inner wall of bellows is arranged one layer of erosion resistant coating, can improve its poor corrosion resistance to a certain extent.So
And in the long-term use process, the erosion resistant coating of tube wall easily cracks, falls off, and causes bellows antiseptic property impaired, influences pipe
The service life of material.
Utility model content
Aiming at the problem that bellows antiseptic property existing in the prior art is easily destroyed, the utility model provides one kind
ETPU environment-friendly type bellows.
The technical solution of the utility model are as follows: a kind of ETPU environment-friendly type bellows, including bellows tube body, it is bonded in ripple
Interior erosion resistant coating and external anti-corrosion layer inside and outside pipe tube body, interior erosion resistant coating and external anti-corrosion layer are by being radially arranged successively
First erosion resistant coating, the second erosion resistant coating and third erosion resistant coating composition, if the upper and lower surfaces of the second erosion resistant coating are respectively arranged with
Dry upper protrusion and lower convexity, upper protrusion and lower convexity are respectively embedded in the inside of the first erosion resistant coating and third erosion resistant coating.
Further, upper protrusion arranges in equally spaced manner.
Further, upper protrusion and the setting of lower convexity interleaved.
Further, upper protrusion and lower convexity are identical as the second erosion resistant coating material.
Further, the thickness of the first erosion resistant coating is equal to the thickness of third erosion resistant coating.
The utility model has the beneficial effect that
1. the utility model is equipped with inside and outside anticorrosive coating, corrosive medium can be prevented to contact with the direct of bellows tube body, passed through
Anti-corrosion effect is played in shielding.Also, inside and outside anticorrosive coating is by the first erosion resistant coating, the second erosion resistant coating being radially arranged successively
It is formed with third erosion resistant coating, barrier action layer by layer can be played, keep anti-corrosion effect stronger.
2. the upper protrusion and lower convexity of the second erosion resistant coating upper and lower surface are respectively embedded in the first erosion resistant coating and third erosion resistant coating
Inside, once the third erosion resistant coating for being higher by height of projection be worn in the long-term use generation cracking, fall off, be located at it is convex
The third erosion resistant coating for playing gap can be protected because of the design of protrusion, and protrusion itself also has anti-corrosive properties, guarantee ripple
While pipe antiseptic property, it is greatly improved the durability of its erosion resistant coating, to extend tubing service life.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the cross-sectional view of erosion resistant coating in the utility model.
In figure: erosion resistant coating in 1-, 2- bellows tube body, 3- external anti-corrosion layer, the first erosion resistant coating of 4-, the second erosion resistant coating of 5-, 6-
Third erosion resistant coating, the upper protrusion of 7-, 8- lower convexity.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
It is as shown in Figs. 1-2: a kind of ETPU environment-friendly type bellows, including bellows tube body 2, be bonded in bellows tube body 2
The interior erosion resistant coating 1 and external anti-corrosion layer 3 of outer two sides, inside and outside anticorrosive coating 1 can prevent corrosive medium from connecing with the direct of bellows tube body 2
Touching plays anti-corrosion effect by shielding.
Interior erosion resistant coating 1 and external anti-corrosion layer 3 are by the first erosion resistant coating 4,5 and of the second erosion resistant coating being radially arranged successively
Third erosion resistant coating 6 forms, and can further function as barrier action layer by layer, keep the anti-corrosion effect of bellows stronger.
The upper and lower surfaces of second erosion resistant coating 5 are respectively arranged with upper raised 7 and lower convexity of several interleaveds
8, upper raised 7 and lower convexity 8 be respectively embedded in the inside of the first erosion resistant coating 4 and third erosion resistant coating 6, once be higher by height of projection
Third erosion resistant coating 6 be worn in the long-term use generation cracking, fall off, the third erosion resistant coating 6 positioned at raised gap can be because
The design of protrusion is protected, and protrusion itself also there are anti-corrosive properties to extend wave to improve the durability of erosion resistant coating
The service life of line pipe.
Specifically, upper raised 7 arrange in equally spaced manner.
Specifically, upper raised 7 and lower convexity 8 it is identical as 5 material of the second erosion resistant coating.
Specifically, the thickness of the first erosion resistant coating 4 is equal to the thickness of third erosion resistant coating 6.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (5)
1. a kind of ETPU environment-friendly type bellows, including bellows tube body (2), it is bonded in inside and outside the bellows tube body (2)
Interior erosion resistant coating (1) and external anti-corrosion layer (3), it is characterised in that: the interior erosion resistant coating (1) and the external anti-corrosion layer (3) are by edge
The first erosion resistant coating (4), the second erosion resistant coating (5) and third erosion resistant coating (6) composition that radial direction is arranged successively, second anti-corrosion
The upper and lower surfaces of layer (5) are respectively arranged on several raised (7) and lower convexity (8), the upper protrusion are (7) and described
Lower convexity (8) is respectively embedded in the inside of first erosion resistant coating (4) and the third erosion resistant coating (6).
2. ETPU environment-friendly type bellows according to claim 1, it is characterised in that: upper raised (7) are with equidistant
Mode arranges.
3. ETPU environment-friendly type bellows according to claim 1, it is characterised in that: upper raised (7) and it is described under it is convex
Play the setting of (8) interleaved.
4. ETPU environment-friendly type bellows according to claim 1, it is characterised in that: upper raised (7) and it is described under it is convex
It is identical as the second erosion resistant coating (5) material to play (8).
5. ETPU environment-friendly type bellows according to claim 1, it is characterised in that: the thickness of first erosion resistant coating (4)
Equal to the thickness of the third erosion resistant coating (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821570019.XU CN208886173U (en) | 2018-09-26 | 2018-09-26 | ETPU environment-friendly type bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821570019.XU CN208886173U (en) | 2018-09-26 | 2018-09-26 | ETPU environment-friendly type bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208886173U true CN208886173U (en) | 2019-05-21 |
Family
ID=66513910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821570019.XU Active CN208886173U (en) | 2018-09-26 | 2018-09-26 | ETPU environment-friendly type bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208886173U (en) |
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2018
- 2018-09-26 CN CN201821570019.XU patent/CN208886173U/en active Active
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