CN213685639U - Hose assembly for conveying liquid food - Google Patents
Hose assembly for conveying liquid food Download PDFInfo
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- CN213685639U CN213685639U CN202022178395.8U CN202022178395U CN213685639U CN 213685639 U CN213685639 U CN 213685639U CN 202022178395 U CN202022178395 U CN 202022178395U CN 213685639 U CN213685639 U CN 213685639U
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Abstract
The utility model discloses a hose assembly for liquid food is carried. The joint comprises a joint inner pipe (1) and an outer buckling pipe (2) sleeved outside the joint inner pipe (1), wherein the joint inner pipe (1) and the outer buckling pipe (2) are matched with one end of a buckling and pressing hose, and the key point is that the hose is sequentially composed of an inner sealing layer (3), an inner pressure-bearing framework layer (4), a middle adhesive bonding layer (5), an outer pressure-bearing framework layer (6) and an outer adhesive protection layer (7), wherein the inner sealing layer is composed of food-grade rubber; the inner pressure-bearing framework layer (4) is formed by winding polyester cord fabric strips dipped with high-tenacity glue at a winding angle of 45-60 degrees and winding an even number of 2-8 layers, the winding directions of the adjacent polyester cord fabric strips are opposite, so that the polyester cord fabric strips of the adjacent layers are in a cross structure, and high-strength plastic wires (10) wound in a spiral mode are arranged in the hose.
Description
The technical field is as follows:
the utility model relates to a hose assembly for food transport, in particular to a high-performance hose assembly for transporting liquid food.
Background art:
the conveying of liquid food is a common phenomenon in modern life, particularly in the production process of liquid food production enterprises, a hose pressure pump is often needed for pressurization conveying, various hoses with different specifications and lengths can be involved, and the hoses are also needed in a plurality of intermediate transfer links for conveying the liquid food. The flexible pipe is used for conveying liquid food, so that the high-efficiency operation is realized, the conveying is carried out under the closed condition, the food safety management is more convenient, and the link of food pollution is reduced. The conventional conveying hose generally comprises an inner adhesive layer, a pressure bearing layer with spiral steel wires and an outer protective layer from inside to outside, wherein the inner adhesive layer directly faces liquid food, the pressure bearing layer supports the hose so as to ensure that the hose cannot deform or flatten excessively, and the outer protective layer plays a role in protection. The hose is used in humid, deformed and other environments for a long time, and has a plurality of defects, firstly, the radial support of the hose is insufficient, flattening is easy to occur, and the transportation efficiency is influenced; secondly, the inner rubber layer is easy to generate a large amount of tiny cracks to reduce the strength, so that harmful substances are bred in the hose or harmful chemical substances in the hose are leaked, and even rusty substances of the internal steel wires are leaked to the inner rubber layer. In the hose assembly, the defects of the hose are eliminated, the sealing performance between the hose and the joint is also a problem, and the problem that the inner surface of the joint and the outer surface of the hose in the prior art have uneven gripping force, so that the liquid food is easy to permeate is also a problem to be solved.
The invention content is as follows:
the utility model aims at disclosing a hose assembly for food conveying, which has high strength, good sealing performance and good sanitary safety.
Realize the utility model discloses a technical solution is: the joint inner pipe and the outer buckling pipe are matched with one end of a buckling and pressing hose, and the key point is that the hose is sequentially composed of an inner sealing layer, an inner pressure bearing framework layer, a middle adhesive bonding layer, an outer pressure bearing framework layer and an outer adhesive protection layer, wherein the inner sealing layer, the inner pressure bearing framework layer, the middle adhesive bonding layer, the outer pressure bearing framework layer and the outer adhesive protection layer are composed of food-grade rubber; the inner pressure-bearing framework layer is formed by winding polyester cord fabric strips dipped with high-tenacity glue at a winding angle of 45-60 degrees and winding an even number of 2-8 layers, the winding directions of the adjacent polyester cord fabric strips are opposite to each other, so that the polyester cord fabric strips of the adjacent layers are of a cross structure, and high-strength plastic wires wound in a spiral mode are arranged in the hose.
The high-strength plastic wires wound in a spiral mode are arranged between the wound polyester cord fabric layers of the inner pressure-bearing framework layer; or/and high strength plastic filaments wound in a spiral fashion are disposed between the wound polyester plies of the outer pressure bearing carcass layer.
The high-strength plastic wire wound in a spiral mode is arranged in the middle adhesive bonding layer.
The connector inner tube is provided with outer convex teeth and the outer buckling tube is provided with inner convex teeth, and the height of the inner convex teeth of the outer buckling tube is gradually reduced from the inner direction to the opening direction.
The food-grade rubber of the inner sealing layer is uniformly mixed with 8-10 nm of 0.2-0.6% of bentonite particles in percentage by weight.
The middle adhesive layer is uniformly mixed with 100-300 nm of bentonite particles according to the weight percentage.
The outer bearing framework layer is formed by winding polyester cord fabric strips dipped with high-tenacity glue at a winding angle of 45-60 degrees, winding an even number of 2-8 layers, and enabling the winding directions of the adjacent polyester cord fabric strips to be opposite to each other to enable the polyester cord fabric strips of the adjacent layers to be of a cross structure.
The outer surface of outer gluey inoxidizing coating be equipped with the winding water cloth layer of nylon water cloth, the winding three-layer, water cloth connects the interval and is not less than 1 meter.
The inner sealing layer is mixed with 1-2% of randomly distributed short carbon fiber filaments in percentage by weight, and the length of the short carbon fiber filaments is 3-8 mm.
The utility model discloses an above-mentioned technical scheme the structural strength of hose among, stretch-proofing performance and anti radial deformability all obtain improving by a wide margin, the leakproofness of hose and the sealing performance between the joint have obtained improving simultaneously, and the inner seal layer of hose has can expand by oneself and eliminate above-mentioned crack when small crack appears, has further improved the health safety performance of hose, has reduced the remaining possibility of liquid food and has reduced multiplying of harmful substance.
Description of the drawings:
fig. 1 is a schematic sectional view of a hose assembly according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure view of a tube wall of a hose according to an embodiment of the present invention.
The specific implementation mode is as follows:
the detailed embodiments of the present invention are described in detail with reference to the accompanying drawings, and it should be noted that the embodiments of the present invention are provided to facilitate the understanding of the technical solutions of the present invention, and should not be construed as limiting the scope of the claims of the present invention.
Referring to fig. 1 to 2, the technical solution of the embodiment of the present invention is: the joint inner pipe 1 and the outer buckling pipe 2 are sleeved outside the joint inner pipe 1, the joint inner pipe 1 and the outer buckling pipe 2 are matched with one end of a buckling hose, and the key point is that the hose is sequentially composed of an inner sealing layer 3, an inner pressure-bearing framework layer 4, a middle adhesive bonding layer 5, an outer pressure-bearing framework layer 6 and an outer adhesive protection layer 7, wherein the inner sealing layer 3, the inner pressure-bearing framework layer 4, the middle adhesive bonding layer 5, the outer pressure-bearing framework layer; the inner pressure-bearing framework layer 4 is formed by winding polyester cord strips dipped with high-tenacity glue at a winding angle of 45-60 degrees, winding an even number of 2-8 layers, and enabling the winding directions of the adjacent polyester cord strips to be opposite to each other to enable the polyester cord strips of the adjacent layers to be of a cross structure. The structure of the hose increases the tensile resistance and radial support performance of the hose assembly, the specific winding angle greatly improves the tensile resistance of the inner pressure-bearing framework layer 4, the middle adhesive layer 5 not only plays a role in interlayer adhesion, but also enables the stress of each direction of the hose to be transitionally transferred and dispersed, and the stress of each layer of the hose cannot be excessively concentrated on a certain layer. The high-strength plastic wire 10 wound in a spiral mode is arranged in the hose, and the spiral plastic wire 10 firstly increases the radial supporting capacity of the hose, so that the hose can keep a round state as much as possible, the conveying efficiency of liquid food under certain pressure can be improved, and the axial tensile strength of the hose is also increased.
The high-strength plastic wire 10 wound in a spiral manner is arranged between the polyester cord plies wound on the inner pressure-bearing framework layer 4, so that the strength of the inner pressure-bearing framework layer 4 is increased, and the support of the inner sealing layer 3 is improved; or/and a helically wound high strength plastic filament 10 is provided between the wound polyester plies of the outer pressure bearing carcass layer 6, which further improves the axial tensile properties and radial support properties of the hose. Under certain technical requirements, the high-strength plastic wires 10 wound in a spiral manner are arranged in the middle adhesive layer 5, so that the strength of the middle adhesive layer 5 is increased, and the function of the middle adhesive layer 5 can be enhanced.
In order to improve the bonding strength and the sealing performance of the joint and the hose, the joint inner pipe 1 is provided with outer convex teeth 8 and the outer buckling pipe 2 is provided with inner convex teeth 9, and the height of the inner convex teeth 9 of the outer buckling pipe 2 is gradually reduced from the inner opening direction. In the buckling deformation process of the outer buckling pipe 2, due to the fact that a buckling end exists at one end of the outer buckling pipe 2, the deformation of the outer buckling pipe 2 from the buckling end to the opening end is not completely uniform, the deformation amount from the buckling end to the opening end is gradually increased, if the tooth heights of the inner convex teeth 9 of the outer buckling pipe 2 are the same, the meshing degrees of the teeth and the hose are different, the closer the outer buckling pipe is to the buckling end, the weaker the meshing force of the inner convex teeth 9 and the hose is, small gaps even appear in the use process, and liquid food can gradually permeate to breed harmful substances; the heights of the inner convex teeth 9 of the outer buckling pipe 2 are gradually decreased from the inner opening direction, and after the outer buckling pipe 2 is buckled and pressed by external force, the meshing degrees of the inner convex teeth 9 and the hose are basically the same, so that the combination of the joint and the hose is improved, the small gap is avoided, and the possibility of harmful substances breeding between the outer buckling pipe 2 and the hose is reduced.
The inner sealing layer 3 may have micro cracks due to various reasons during the long-term use of the hose, and the liquid food may be easily remained in the cracks and may not be easily cleaned. Therefore, the food-grade rubber of the inner sealing layer 3 is uniformly mixed with 8-10 nm of 0.5-1% of bentonite particles in percentage by weight. When tiny cracks occur in the hose in use, liquid such as moisture of liquid food can penetrate into the cracks to enter the inner sealing layer 3, the liquid such as the moisture is absorbed or adsorbed by the interlayer structure of the bentonite particles, the expansion of the interlayer structure enables the volume of the bentonite to greatly expand, and further enables the rubber to expand to eliminate the tiny cracks of the inner sealing layer 3, namely the rubber of the inner sealing layer 3 added with the nanoscale bentonite particles has self expansibility after the liquid enters, and the tiny cracks are eliminated while the liquid food is prevented from remaining. Due to the physicochemical properties of the nanoscale bentonite, the interlayer structure of the bentonite particles is combined with rubber molecules or certain structures or groups in the rubber molecules, so that the strength or elasticity of the rubber is further improved.
In order to further improve the performance of the hose, 100 to 300nm of bentonite particles calculated according to weight percentage are uniformly mixed in the middle adhesive layer 5, the bentonite particles are distributed in the middle adhesive layer 5 in a dotted manner, since the above-mentioned bentonite particles are large, each particle is bonded to molecules of constituent components of the plurality of intermediate adhesive layers 5, and a three-dimensional network-like bonding site is substantially formed in the intermediate adhesive layer 5, this improves the strength of the middle adhesive layer 5, and the above-mentioned bentonite particles located at the boundary of the middle adhesive layer 5 are bonded even with the molecules of the high tenacity glue at the boundary of the inner and outer pressure-bearing skeleton layers (4, 6), this results in an increase in the strength of the middle adhesive layer 5 and in the bonding force of the middle adhesive layer 5 to the inner and outer pressure-bearing carcass layers (4, 6), which also further increases the effect of the aforementioned middle adhesive layer 5.
In order to further improve the performance of the hose, the outer pressure-bearing framework layer 6 is formed by winding polyester cord fabric strips dipped with high-tenacity glue at a winding angle of 45-5560 degrees and winding even layers of 2-8 layers, and the winding directions of the adjacent polyester cord fabric strips are opposite to each other, so that the polyester cord fabric strips of the adjacent layers are in a cross configuration. The even number of the winding cloth layers is to avoid internal stress in the hose or the outer pressure-bearing framework layer 6, improve the bending performance of the hose and increase the overall strength, and the polyester cord fabric strips of the inner pressure-bearing framework layer 4 and the polyester cord fabric strips of the outer pressure-bearing framework layer 6 are staggered by 3-5 mm in the axial direction of the hose to be wound, so that the axial and radial stress uniformity of the hose can be further improved, the strength of the hose is further improved, and the service life of the hose is further prolonged.
In order to further improve the performance of the hose, the high-strength plastic wires 10 wound in a spiral mode are arranged between the polyester cord fabrics wound on the inner pressure-bearing framework layer 4, the plastic wires 10 have high elasticity, the axial tensile resistance and the radial deformation resistance of the inner pressure-bearing framework layer 4 are enhanced, when the hose is used for a long time, liquid penetrates into the inner pressure-bearing framework layer 4 due to cracks generated on the inner sealing layer 3, the plastic wires 10 cannot generate any corrosion, and the sanitary safety of the hose is improved; or/and the high-strength plastic wires 10 wound in a spiral mode are arranged between the wound polyester cord fabric strips of the outer pressure-bearing framework layer 6.
The food-grade rubber of the inner sealing layer 3 is Natural Rubber (NR), or nitrile rubber (NBR), or Ethylene Propylene Diene Monomer (EPDM), or polyethylene plastic, or nylon plastic, and the above materials can be properly selected according to the specification or technical requirements of the hose or the use environment.
In order to further improve the performance of the hose assembly, the outer surface of the outer rubber protective layer 7 is provided with a water cloth layer wound by nylon water cloth, three layers (not shown in the figure) are wound, the distance between water cloth joints is not less than 1 meter, and the performance of the hose and the application range of the hose can be further improved after the water cloth layer is added.
In order to further improve the performance of the hose, 1-2% of randomly distributed short carbon fiber yarns are mixed in the inner sealing layer 3 in percentage by weight, the length of the short carbon fiber yarns is 3-8 mm, the strength of the inner sealing layer 3 of the short carbon fiber yarns is increased, the generation of the micro cracks can be greatly reduced, and the sanitary safety performance can be further improved.
Claims (9)
1. A hose assembly for conveying liquid food comprises a joint inner pipe (1) and an outer buckling pipe (2) sleeved outside the joint inner pipe (1), wherein the joint inner pipe (1) and the outer buckling pipe (2) are matched with one end of a buckling and pressing hose, and the hose assembly is characterized in that the hose is sequentially composed of an inner sealing layer (3), an inner pressure-bearing framework layer (4), a middle adhesive bonding layer (5), an outer pressure-bearing framework layer (6) and an outer adhesive protective layer (7), wherein the inner sealing layer is composed of food-grade rubber; the inner pressure-bearing framework layer (4) is formed by winding polyester cord fabric strips dipped with high-tenacity glue at a winding angle of 45-60 degrees and winding an even number of 2-8 layers, the winding directions of the adjacent polyester cord fabric strips are opposite, so that the polyester cord fabric strips of the adjacent layers are in a cross structure, and high-strength plastic wires (10) wound in a spiral mode are arranged in the hose.
2. The hose assembly for transporting liquid food as claimed in claim 1, wherein the helically wound high strength plastic filaments (10) are disposed between the wound polyester plies of the inner pressure-bearing carcass layer (4); or/and high-strength plastic wires (10) wound in a spiral manner are arranged between the wound polyester cord plies of the outer bearing framework layer (6).
3. The hose assembly for transporting liquid food as claimed in claim 1, wherein the high-strength plastic wire (10) wound in a spiral manner is disposed in the middle adhesive layer (5).
4. The hose assembly for transporting liquid food according to claim 1, 2 or 3, wherein the joint inner tube (1) has external convex teeth (8) and the external crimping tube (2) has internal convex teeth (9), and the height of the internal convex teeth (9) of the external crimping tube (2) is gradually reduced from the direction of the inward opening.
5. The hose assembly for transporting liquid food as claimed in claim 4, wherein the food grade rubber of the inner sealing layer (3) is uniformly mixed with 8-10 nm of 0.2-0.6% by weight of bentonite particles.
6. The hose assembly for transporting liquid food as claimed in claim 5, wherein the middle adhesive layer (5) is uniformly mixed with 100 to 300nm of bentonite particles in percentage by weight.
7. The hose assembly for conveying liquid food as claimed in claim 6, wherein the outer pressure-bearing skeleton layer (6) is formed by winding polyester cord fabric strips impregnated with high tenacity glue at a winding angle of 45-60 degrees in an even number of 2-8 layers, and the winding directions of the adjacent polyester cord fabric strips are opposite to each other, so that the polyester cord fabric strips of the adjacent layers are in a crossed structure.
8. The hose assembly for transporting liquid food as claimed in claim 7, wherein the outer surface of the outer rubber protective layer (7) is provided with a nylon water cloth layer wound with nylon water cloth, the nylon water cloth layer is wound with three layers, and the distance between water cloth joints is not less than 1 m.
9. The hose assembly for transporting liquid food as claimed in claim 8, wherein the inner sealing layer (3) is mixed with 1-2% by weight of randomly distributed short carbon fiber filaments, and the length of the short carbon fiber filaments is 3-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022178395.8U CN213685639U (en) | 2020-09-28 | 2020-09-28 | Hose assembly for conveying liquid food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022178395.8U CN213685639U (en) | 2020-09-28 | 2020-09-28 | Hose assembly for conveying liquid food |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685639U true CN213685639U (en) | 2021-07-13 |
Family
ID=76751083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022178395.8U Active CN213685639U (en) | 2020-09-28 | 2020-09-28 | Hose assembly for conveying liquid food |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685639U (en) |
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2020
- 2020-09-28 CN CN202022178395.8U patent/CN213685639U/en active Active
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