High-pressure composite pipe for food

Abstract

The utility model discloses a high-pressure composite pipe for food, which is of a multi-layer structure, an inner rubber pipe is arranged at the center, the inner rubber pipe is thinner and made of UPE food-grade materials, the food can be prevented from being polluted by the outside, a rubber layer is arranged outside the inner rubber pipe, and the rubber layer is used for bearing pressure and can ensure the stability of the high-pressure composite pipe for food under high pressure. A steel wire layer is arranged outside the rubber layer, the steel wire layer adopts a braided structure, a secondary protection layer is arranged outside the steel wire layer, a spiral winding layer is arranged outside the secondary protection layer, and the internal structure is integrally wrapped by the spiral winding layer; the spiral steel wire layer is arranged outside the spiral winding layer, the spiral winding layer is isolated from the outside through the spiral steel wire layer, and pipeline damage caused by outer wall friction is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of food conveying pipelines, and in particular relates to a high-pressure composite pipe for food. Background Art

[0002] As is known to all, in the technical field of food delivery pipelines, current food delivery pipelines usually use rubber pipes or polymer pipes. In order to improve the inherent strength of such delivery pipelines, metal wires are usually spirally arranged inside the pipelines, and the pipe body is formed by covering and fusing the rubber or polymer material with the metal wire. At present, such pipelines are widely used, but they are not particularly suitable for some fluid foods. Their disadvantages are reflected in: 1. Poor corrosion resistance. After long-term use, it is easy to cause the rubber layer or polymer material layer to be damaged, and the food is in direct contact with the metal wire, resulting in food contamination; 2. Insufficient pressure bearing capacity. When transporting food under pressure, it is easy to cause cracks in the pipeline under high pressure, causing liquid leakage; 3. The quality of the rubber layer or polymer material in direct contact with the food is unstable. When food grade is used as a whole, the cost of pipe production is extremely high, which affects promotion.

[0003] As R&D technicians in this field, the technical problem that urgently needs to be solved is to design a high-pressure composite pipe for food, which can effectively achieve internal stratification on the basis of improving product strength through structural changes, ensure that the pipes in direct contact with food are made of high-quality food-grade materials, and effectively control product costs. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a high-pressure composite pipe for food, which has a novel structural design and a multi-layer structure, can effectively ensure the overall strength of the pipeline while avoiding leakage, thereby ensuring the safety of food transportation.

[0005] To achieve the above technical objectives, the utility model adopts the following scheme: a high-pressure composite pipe for food, which is a multi-layer structure, with an inner rubber hose at the center, and the outside of the inner rubber hose is a rubber layer, which is used to bear pressure, and can ensure the stability of the high-pressure composite pipe for food under high pressure; the outside of the rubber layer is a steel wire layer, and the steel wire layer adopts a woven structure, and the outside of the steel wire layer is a secondary protective layer, and the outside of the secondary protective layer is a spiral winding layer, and the internal structure is covered as a whole by the spiral winding layer; the outside of the spiral winding layer is a spiral steel wire layer, and the spiral winding layer is isolated from the outside by the spiral steel wire layer to avoid pipeline damage caused by friction of the outer wall.

[0006] The inner rubber hose is made of high-density polyethylene, which has the characteristics of wear resistance, low temperature resistance, chemical resistance and corrosion resistance under normal conditions.

[0007] The secondary protective layer is made of rubber or steel wire. If steel wire is used, its weaving structure is opposite to that of the steel wire layer; if rubber is used, the thickness of the rubber is not less than 2 / 3 of the thickness of the rubber layer.

[0008] The two ends of the high-pressure composite tube for food are provided with segmented joints, which include an inner joint and an outer joint, and the inner joint and the outer joint are both provided with extension tubes and locking seats, and the adjacent locking seats are locked together by multiple bolts; the extension tube close to one side of the spiral winding layer tightly wraps the spiral winding layer. The extension tube close to one side of the spiral winding layer is provided with a raised wrapping cavity, and the spiral steel wire layer is tightly wrapped by the raised wrapping cavity.

[0009] The spiral steel wire layer is made of manganese steel, which has high wear resistance and can effectively improve peripheral wear protection.

[0010] The beneficial effects of the utility model are as follows: the utility model is a multi-layer structure, an inner rubber hose is used at the center, the inner rubber hose is relatively thin, and it adopts UPE food grade material, which can ensure that food is not polluted by the outside, the outside of the inner rubber hose is a rubber layer, and the rubber layer is used to bear pressure, which can ensure the stability of the high-pressure composite pipe for food under high pressure; the outside of the rubber layer is a steel wire layer, and the steel wire layer adopts a woven structure, and the outside of the steel wire layer is a secondary protective layer, and the outside of the secondary protective layer is a spiral winding layer, and the internal structure is covered as a whole by the spiral winding layer; the outside of the spiral winding layer is a spiral steel wire layer, and the spiral winding layer is isolated from the outside by the spiral steel wire layer, so as to avoid pipeline damage caused by friction of the outer wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a main schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0014] Figure 4 for Figure 2 A schematic diagram of the structure of the middle B region;

[0015] In the accompanying drawings, 1. inner rubber hose, 2. rubber layer, 3. steel wire layer, 4. secondary protective layer, 5. spiral winding layer, 6. spiral steel wire layer, 7. segmented joint, 71. outer joint, 72. inner joint, 73. inner extension seat, 74. inner extension tube, 75. outer extension seat, 76. outer extension tube, 77. raised covering cavity. DETAILED DESCRIPTION

[0016] A high-pressure composite tube for food, as shown in the attached drawings, is a multi-layer structure, with an inner hose 1 at the center, the inner hose 1 is made of high-density polyethylene (UPE), and under normal conditions, the material properties of this type of material are wear-resistant, low-temperature-resistant, chemical-resistant, and corrosion-resistant. Because the inner hose 1 will be in continuous contact with liquid food or gaseous substances, the liquid food is usually edible alcohol, protein liquid, and liquid seasoning, among which alcohol and liquid seasoning are highly corrosive, and this corrosiveness will cause material damage to rubber pipes. When the inner hose 1 is made of UPE, this problem can be effectively avoided. Because the inner hose 1 is heavily coated inside and does not contact the outside, the thickness of its tube wall can be controlled within a certain range, so the thickness of the inner hose can be reduced, and the production cost will be greatly reduced.

[0017] The outside of the inner hose 1 is a rubber layer 2, and the thickness of the rubber layer 2 is usually set to be more than three times that of the inner hose 1. Because the rubber layer 2 is mainly used to bear pressure, it can ensure the stability of the high-pressure composite pipe for food under high pressure. This stability ensures that the inner hose 1 is not subject to external impact.

[0018] The outside of the rubber layer 2 is a steel wire layer 3, and the steel wire layer 3 adopts a woven structure. The outside of the steel wire layer 3 is a secondary protective layer 4, and the outside of the secondary protective layer 4 is a spiral winding layer 5, and the internal structure is entirely covered by the spiral winding layer 5; the above structure is set up, and the steel wire layer 3 is used as a reinforcement of the metal braided layer, which not only provides a high-strength support structure, but also is used to combine the rubber layer 2 and the secondary protective layer 4 into one. In this embodiment, the secondary protective layer 4 is made of rubber or steel wire. It should be pointed out that if steel wire material is used, it also adopts a woven structure, which is opposite to the braided structure of the steel wire layer 3 in terms of the woven structure, and the pipeline strength is improved by the double-layer woven structure set up above and below; if the secondary protective layer 4 is made of rubber material, the thickness of the rubber of this secondary protective layer 4 is not less than 2 / 3 of the thickness of the rubber layer 2. Since the high-pressure composite pipe for food is not only used for the transportation of liquid food, but also for the transportation of oxygen in the medical field, it must have a higher pressure resistance. The above structure ensures the stability of the pipe under strong liquid pressure or gas pressure.

[0019] After the above structure is set, a spiral winding layer 5 is set outside the secondary protective layer 4, which covers the pipeline structure composed of the inner hose 1, rubber layer 2, steel wire layer 3, and secondary protective layer 4 to prevent puncture from external hard or sharp objects while maintaining a good appearance.

[0020] The outside of the spiral winding layer 5 is a spiral steel wire layer 6, which isolates the spiral winding layer 5 from the outside to avoid pipeline damage caused by the outer wall rubbing against the spiral winding layer 5. The spiral steel wire layer 6 is made of manganese steel, which has high wear resistance. The increase in its friction frequency can further enhance its strength, which can effectively improve the peripheral wear protection.

[0021] In order to facilitate the connection of the high-pressure composite pipe for food with the outside, the two ends of the high-pressure composite pipe for food are respectively designed with segmented joints, such as Figure 1 As shown, this segmented joint 7 includes an inner joint 72 and an outer joint 71, and both the inner joint 72 and the outer joint 71 are provided with extension tubes and locking seats, namely, an inner extension seat 73, an inner extension tube 74, an outer extension seat 75, and an outer extension tube 76. When connected and fixed to the outside, the inner extension seat 73 and the outer extension seat 75 can be directly connected by bolts, and the inner extension tube 74 and the outer extension tube 76 fixed above can be connected to the high-pressure composite pipe for food and the external joint respectively. This connection can extend the connection point between the pipeline and the segmented joint 7, avoiding stress concentration caused by too short a connection point between the pipeline and the joint, and ultimately increasing the breakage rate at the connection point. The fixing of the inner extension tube 74 and the outer extension tube 76 described above are all achieved by tightening.

[0022] When the utility model sets the segmented joint 7, in order to improve the stability of the joint connection, it not only sets the inner extension tube 74 to extend the connection length with the high-pressure composite tube for food, but also sets a raised covering cavity 77 on the inner extension tube 74. The spiral steel wire layer 6 is tightly covered by the raised covering cavity 77. This structure can enhance the stability of the extrusion and fixation of the spiral steel wire layer 6, and will not cause the reduction of the protection area due to the contraction of the spiral steel wire layer 6.

Claims

1. A high-pressure composite tube for food, characterized in that: It is a multi-layer structure, with an inner rubber hose at the center, and the outside of the inner rubber hose is a rubber layer; the outside of the rubber layer is a steel wire layer, and the steel wire layer adopts a woven structure, the outside of the steel wire layer is a secondary protective layer, and the outside of the secondary protective layer is a spirally wound layer, and the internal structure is entirely covered by the spirally wound layer; the outside of the spirally wound layer is a spiral steel wire layer, and the inner hose is made of UPE material.

2. The high pressure composite tube for food as claimed in claim 1, characterized in that: The secondary protective layer is made of rubber or steel wire. If steel wire is used, its weaving structure is opposite to that of the steel wire layer; if rubber is used, the thickness of the rubber is not less than 2 / 3 of the thickness of the rubber layer.

3. The high pressure composite tube for food as claimed in claim 1, characterized in that: The two ends of the high-pressure composite tube for food are provided with segmented joints, the segmented joints include an inner joint and an outer joint, the inner joint and the outer joint are both provided with extension tubes and locking seats, and the adjacent locking seats are locked together by multiple bolts; the extension tube close to one side of the spiral winding layer tightly wraps the spiral winding layer.

4. The high pressure composite tube for food as claimed in claim 3, characterized in that: A protruding covering cavity is arranged on the extension tube close to one side of the spiral winding layer, and the spiral steel wire layer is tightly covered by the protruding covering cavity.

5. The high pressure composite tube for food as claimed in claim 1, characterized in that: The spiral steel wire layer is made of manganese steel.

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