Low-temperature-resistant PVC (polyvinyl chloride) hose

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) hoses, in particular to a low-temperature-resistant PVC hose, which comprises a hose body, a support frame arranged in the wall of the hose body, a thermal insulation layer adhered to the outer surface of the hose body, a plurality of vacuum tubes embedded in the thermal insulation layer, a low-temperature-resistant layer adhered to the outer surface of the thermal insulation layer, and a plurality of first vacuum pads arranged on the inner wall of the low-temperature-resistant layer. A high-temperature-resistant layer adheres to the outer surface of the low-temperature-resistant layer, a plurality of second vacuum pads are arranged on the inner wall of the high-temperature-resistant layer, a wear-resistant layer adheres to the outer surface of the high-temperature-resistant layer, and a plurality of wear-resistant protrusions are arranged on the According to the PVC hose, the high-strength metal supporting frame is arranged in the pipe wall of the pipe body, so that the deformation resistance of the PVC hose is enhanced, and the conditions of embrittlement, fracture after impact and frost crack occurring when the PVC hose is used in a low-temperature environment are reduced; through the arrangement of the heat preservation layer, the low-temperature-resistant layer, the high-temperature-resistant layer, the vacuum pipes arranged in the layers, the first vacuum pad and the second vacuum pad, the heat preservation efficiency of the PVC pipe is enhanced, and interference of the external environment to the PVC pipe is effectively blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC hoses, in particular to a low-temperature resistant PVC hose. Background Art

[0002] Low-temperature resistant PVC hose is a PVC hose that can remain soft and durable at low temperatures. With the continuous development of industrial production and the improvement of environmental awareness, the market demand for low-temperature resistant PVC hose is increasing. Many industries, such as chemical, pharmaceutical, and food, need to use low-temperature resistant PVC hose. Since many media in industrial production need to be stored and transported at low temperatures, the research on low-temperature resistant PVC hose has an important impact on the quality and efficiency of industrial production.

[0003] The utility model with the announcement number CN212338449U discloses a cold-resistant and frost-resistant PVC pipe, including an antifreeze component, a pipe body, an insulation layer and an anticorrosion component. By setting the antifreeze component, the antifreeze layer forms a low-temperature resistant layer on the outside of the pipe body, ensuring the normal use of the PVC pipe in a low-temperature environment, avoiding the phenomenon of freezing and cracking of the PVC pipe, increasing the service life of the PVC pipe, and improving the safety performance of the PVC pipe. The wear-resistant layer protects the antifreeze layer, avoiding the phenomenon of wear and failure of the antifreeze layer during use, and ensuring the normal operation of the antifreeze layer.

[0004] The above technical solution improves the protectiveness and low-temperature resistance of the PVC pipe by establishing a wear-resistant layer and an antifreeze layer. However, in actual use, the PVC pipe does not have the ability to resist deformation when combined with the antifreeze component, pipe body, insulation layer and anti-corrosion component. When used in a low-temperature environment, it will become brittle, break and freeze after being impacted. In addition, the insulation efficiency of the insulation layer of the PVC pipe is not high, and it cannot effectively block the interference of the external environment on the PVC pipe. Utility Model Content

[0005] The purpose of the utility model is to provide a ventilation and heat dissipation device for a prefabricated cabin to solve the problem that the above-mentioned background technology discloses a cold-resistant and frost-resistant PVC pipe with the authorization announcement number CN212338449U. However, in actual use, the PVC pipe has poor deformation resistance. When used in a low-temperature environment, it will become brittle, break and freeze after being impacted. In addition, the insulation efficiency of the thermal insulation layer of the PVC pipe is not high, and it cannot effectively block the interference of the external environment on the PVC pipe.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A low-temperature resistant PVC hose, comprising a pipe body, wherein a support frame is provided in the pipe wall of the pipe body, a heat insulation layer is bonded to the outer surface of the pipe body, a number of cylindrical vacuum tubes are embedded in the heat insulation layer, a low-temperature resistant layer is bonded to the outer surface of the heat insulation layer, a number of first vacuum pads are provided on the inner wall of the low-temperature resistant layer, a high-temperature resistant layer is bonded to the outer surface of the low-temperature resistant layer, a number of second vacuum pads are provided on the inner wall of the high-temperature resistant layer, a wear-resistant layer is bonded to the outer surface of the high-temperature resistant layer, and a number of wear-resistant protrusions are provided on the outer wall of the wear-resistant layer.

[0008] Preferably, the pipe body is made of PVC material, and a toughening agent is added to the PVC material, and an anti-corrosion coating is applied to the inner surface of the pipe body.

[0009] In the present utility model, by adding a toughening agent, the toughness of the pipe body is enhanced, and by applying an anti-corrosion coating, the erosion of corrosive materials on the inner wall of the pipe body is blocked, and the service life of the pipe body is extended through mutual cooperation.

[0010] Preferably, the support frame is composed of spiral steel wires, and the inner diameter of the support frame is smaller than the thickness between the inner wall and the outer wall of the pipe body.

[0011] In the present utility model, the spiral steel wire is composed of high-elasticity and high-strength galvanized metal wires. The support frame is arranged on the pipe wall of the pipe body to support the pipe body and enable the pipe body to have anti-deformation ability.

[0012] Preferably, a number of vacuum tubes are distributed at equal intervals in a ring shape, and the inner wall of the heat insulation layer is closely attached to the outer wall of the pipe body.

[0013] In the present utility model, the heat insulation layer is made of polyurethane foam. By providing vacuum tubes, the heat insulation performance of the heat insulation layer is enhanced, and at the same time, the material usage amount of the heat insulation layer is reduced, and the material usage cost is lowered.

[0014] Preferably, a number of first vacuum pads are distributed at equal intervals in a ring shape, the inner wall of the low-temperature resistant layer is closely attached to the outer wall of the heat insulation layer and is bonded and fixed.

[0015] In the present utility model, the low-temperature resistant layer is made of rubber and plastic sponge, and a number of first vacuum pads are trapezoidal columns. By providing the first vacuum pads, the heat insulation performance of the low-temperature resistant layer is enhanced, and at the same time, the material cost of the low-temperature resistant layer is saved.

[0016] Preferably, a number of second vacuum pads are distributed at equal intervals in a ring shape, the outer wall of the high-temperature resistant layer is closely attached and is bonded and fixed, and the second vacuum pads and the first vacuum pads are cross-distributed.

[0017] In the present utility model, the high-temperature resistant layer is made of flame-retardant mica tape. A number of second vacuum pads are trapezoidal columns. By providing the second vacuum pads, the heat insulation property of the high-temperature resistant layer is enhanced, and at the same time, the material cost of the high-temperature resistant layer is saved. Through the cross distribution and mutual cooperation of the first vacuum pads and the second vacuum pads, the heat preservation property of the PVC hose is improved, and the influence of temperature change in the external environment on the internal interference is reduced.

[0018] Preferably, the wear-resistant protrusions are of an annular structure, and a number of wear-resistant protrusions are evenly distributed on the outer wall of the wear-resistant layer. The wear-resistant layer and the wear-resistant protrusions are of an integrally formed structure, and the inner wall of the wear-resistant layer is closely attached to and adhesively fixed to the outer wall of the high-temperature resistant layer.

[0019] In the present utility model, the wear-resistant protrusions are made of high-strength wear-resistant rubber. By providing the wear-resistant protrusions, the thickness of the wear-resistant layer is reduced, and the wear resistance of the wear-resistant layer is enhanced.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. In the present utility model, by adding a toughening agent in the PVC material and providing a high-strength metal support frame in the pipe wall of the pipe body, the anti-deformation ability of the PVC pipe is enhanced, and the embrittlement, cracking and freezing cracking that occur when used in a low-temperature environment are reduced; by providing a heat preservation layer, a low-temperature resistant layer, a high-temperature resistant layer and the vacuum tubes, the first vacuum pads and the second vacuum pads provided inside each layer, the heat preservation efficiency of the PVC pipe is enhanced, and the interference of the external environment on the PVC pipe is effectively blocked;

[0022] 2. In the present utility model, by applying an anti-corrosion material to the inner wall of the pipe body, the anti-corrosion ability of the pipe body is enhanced, and the service life of the PVC pipe is prolonged. By providing a number of vacuum tubes, the first vacuum pads and the second vacuum pads provided inside each layer, the material usage amount of each layer is reduced, and the manufacturing cost of the PVC pipe is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the transverse sectional structure of the present utility model;

[0025] Figure 3 is a schematic diagram of the vertical sectional structure of the present utility model;

[0026] Figure 4 is a schematic diagram of the axial sectional view of the present utility model.

[0027] The meanings of the various reference numerals in the drawings are as follows:

[0028] 1. Pipe body; 10. Support frame;

[0029] 2. Thermal insulation layer; 20. Vacuum tube;

[0030] 3. Low temperature resistant layer; 30. First vacuum pad;

[0031] 4. High temperature resistant layer; 40. Second vacuum pad;

[0032] 5. Wear resistant layer; 50. Wear resistant protrusion. Specific implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figure 1 - Figure 4 , this embodiment provides a technical solution:

[0035] A low temperature resistant PVC hose, including a pipe body 1, the pipe body 1 is made of PVC material, and a toughening agent is added to the PVC material, and an anti-corrosion coating is applied to the inner surface of the pipe body 1.

[0036] In the present invention, by adding a toughening agent, the toughness of the pipe body 1 is enhanced, and by applying an anti-corrosion coating, the erosion of corrosive materials on the inner wall of the pipe body 1 is blocked, and the two cooperate to extend the service life of the pipe body 1.

[0037] Furthermore, a support frame 10 is provided in the pipe wall of the pipe body 1, the support frame 10 is composed of spiral steel wires, and the inner diameter of the support frame 10 is smaller than the thickness between the inner wall and the outer wall of the pipe body 1.

[0038] In the present invention, the spiral steel wire is composed of high-elasticity and high-strength galvanized metal wires. The support frame 10 is provided in the pipe wall of the pipe body 1 to support the pipe body 1 and enable the pipe body 1 to have the ability to resist deformation.

[0039] It should be noted that a thermal insulation layer 2 is adhesively bonded to the outer surface of the pipe body 1, and a number of cylindrical vacuum tubes 20 are embedded in the thermal insulation layer 2. The number of vacuum tubes 20 is evenly distributed in a ring at equal intervals, and the inner wall of the thermal insulation layer 2 is closely attached to the outer wall of the pipe body 1.

[0040] In the present invention, the thermal insulation layer 2 is made of polyurethane foam. By providing the vacuum tubes 20, the heat preservation performance of the thermal insulation layer 2 is enhanced, and at the same time, the material usage amount of the thermal insulation layer 2 is reduced, and the material usage cost is lowered.

[0041] Specifically, a low-temperature resistant layer 3 is adhesively bonded to the outer surface of the heat insulation layer 2. A number of first vacuum pads 30 are provided on the inner wall of the low-temperature resistant layer 3. The plurality of first vacuum pads 30 are annularly and equidistantly distributed. The inner wall of the low-temperature resistant layer 3 is closely attached to and adhesively fixed to the outer wall of the heat insulation layer 2.

[0042] In the present utility model, the low-temperature resistant layer 3 is made of rubber and plastic sponge. The plurality of first vacuum pads 30 are trapezoidal columns. By providing the first vacuum pads 30, the low-temperature resistance of the low-temperature resistant layer 3 is enhanced, and at the same time, the material cost of the low-temperature resistant layer 3 is saved.

[0043] It should be noted that a high-temperature resistant layer 4 is adhesively bonded to the outer surface of the low-temperature resistant layer 3. A number of second vacuum pads 40 are provided on the inner wall of the high-temperature resistant layer 4. The plurality of second vacuum pads 40 are annularly and equidistantly distributed. The inner wall of the high-temperature resistant layer 4 is closely attached to and adhesively fixed to the outer wall of the low-temperature resistant layer 3. The second vacuum pads 40 and the first vacuum pads 30 are cross-distributed.

[0044] In the present utility model, the high-temperature resistant layer 4 is made of flame-retardant mica tape. The plurality of second vacuum pads 40 are trapezoidal columns. By providing the second vacuum pads 40, the high-temperature resistance of the high-temperature resistant layer 4 is enhanced, and at the same time, the material cost of the high-temperature resistant layer 4 is saved. Through the cross-distribution and mutual cooperation of the first vacuum pads 30 and the second vacuum pads 40, the heat insulation performance of the PVC hose is improved.

[0045] Finally, it should be said that a wear-resistant layer 5 is adhesively bonded to the outer surface of the high-temperature resistant layer 4. A number of wear-resistant protrusions 50 are provided on the outer wall of the wear-resistant layer 5. The wear-resistant protrusions 50 are annular structures, and the plurality of wear-resistant protrusions 50 are equidistantly distributed on the outer wall of the wear-resistant layer 5. The wear-resistant layer 5 and the wear-resistant protrusions 50 are integrally formed structures, and the inner wall of the wear-resistant layer 5 is closely attached to and adhesively fixed to the outer wall of the high-temperature resistant layer 4.

[0046] In the present utility model, the wear-resistant layer 5 and the wear-resistant protrusions 50 are made of high-strength wear-resistant rubber. By providing the wear-resistant protrusions 50, the contact area between the outer wall of the wear-resistant layer 5 and the ground is reduced, and at the same time, the thickness of the wear-resistant layer 5 is relatively increased, enhancing the wear resistance of the wear-resistant layer 5.

[0047] When the low-temperature resistant PVC hose in this embodiment is in use, the user first sleevingly adhesively bonds the heat insulation layer 2 to the outer wall of the pipe body 1, sleevingly adhesively bonds the low-temperature resistant layer 3 to the outer wall of the heat insulation layer 2, sleevingly adhesively bonds the high-temperature resistant layer 4 to the outer wall of the low-temperature resistant layer 3, and sleevingly adhesively bonds the wear-resistant layer 5 to the outer wall of the high-temperature resistant layer 4;

[0048] When a low-temperature resistant PVC hose is needed, first connect the PVC pipe before use, check the connection sealing condition, and connect the liquid. Under the protection of the anti-corrosion coating on the inner wall of the pipe body 1, the influence of corrosive liquid on the inner wall of the pipe body 1 is isolated, increasing the service life of the pipe body 1. At the same time, under the action of the support frame 10 inside the pipe wall of the pipe body 1, the anti-deformation ability of the PVC pipe is enhanced. Under the action of the heat preservation layer 2, the low-temperature resistant layer 3, and the high-temperature resistant layer 4, the low-temperature resistance and high-temperature resistance of the PVC pipe are enhanced. Under the interaction of the vacuum pipe 20, the first vacuum pad 30, and the second vacuum pad 40, the heat preservation performance of the PVC pipe is further enhanced, effectively blocking the interference of the external environment on the PVC pipe material. By setting up the wear-resistant protrusions 50, the contact area between the wear-resistant layer 5 and the ground is reduced, the friction loss with the ground is reduced, and the service life of the PVC pipe is increased.

Claims

1. A low-temperature resistant PVC hose, comprising a hose body (1), characterized in that: A support frame (10) is provided in the tube wall of the tube body (1). A heat insulation layer (2) is adhesively bonded to the outer surface of the tube body (1). A number of cylindrical vacuum tubes (20) are embedded in the heat insulation layer (2). A low-temperature resistant layer (3) is adhesively bonded to the outer surface of the heat insulation layer (2). A number of first vacuum pads (30) are provided on the inner wall of the low-temperature resistant layer (3). A high-temperature resistant layer (4) is adhesively bonded to the outer surface of the low-temperature resistant layer (3). A number of second vacuum pads (40) are provided on the inner wall of the high-temperature resistant layer (4). A wear-resistant layer (5) is adhesively bonded to the outer surface of the high-temperature resistant layer (4). A number of wear-resistant protrusions (50) are provided on the outer wall of the wear-resistant layer (5); the tube body (1) is made of PVC material, and a toughening agent is added to the PVC material, and an anti-corrosion coating is applied to the inner surface of the tube body (1).

2. The low-temperature resistant PVC hose according to claim 1, characterized in that: The support frame (10) is composed of spiral steel wires, and the inner diameter of the support frame (10) is smaller than the thickness between the inner wall and the outer wall of the tube body (1).

3. The low-temperature resistant PVC hose according to claim 1, characterized in that: A number of vacuum tubes (20) are distributed at equal intervals in a ring shape, and the inner wall of the heat insulation layer (2) is closely attached to the outer wall of the tube body (1).

4. The low-temperature resistant PVC hose according to claim 1, characterized in that: A number of first vacuum pads (30) are distributed at equal intervals in a ring shape, and the inner wall of the low-temperature resistant layer (3) is closely attached to the outer wall of the heat insulation layer (2) and adhesively fixed.

5. The low-temperature resistant PVC hose according to claim 1, characterized in that: A number of second vacuum pads (40) are distributed at equal intervals in a ring shape, the inner wall of the high-temperature resistant layer (4) is closely attached to the outer wall of the low-temperature resistant layer (3) and adhesively fixed, and the second vacuum pads (40) and the first vacuum pads (30) are cross-distributed.

6. The low-temperature resistant PVC hose according to claim 1, characterized in that: The wear-resistant protrusions (50) are of a ring structure, and a number of wear-resistant protrusions (50) are distributed at equal intervals on the outer wall of the wear-resistant layer (5). The wear-resistant layer (5) and the wear-resistant protrusions (50) are of an integrally formed structure, and the inner wall of the wear-resistant layer (5) is closely attached to the outer wall of the high-temperature resistant layer (4) and adhesively fixed.

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