Low-temperature-resistant metal hose

Abstract

The low-temperature-resistant metal hose comprises a metal hose body, a protective layer, an air exhaust head, a vacuum layer, a pipeline, a fixing cap and a blocking pad, the outer wall of the metal hose body is sleeved with the protective layer, the vacuum layer is arranged in the protective layer, an outer blocking layer is arranged on the outer ring wall of the vacuum layer, and the outer blocking layer is arranged on the outer ring wall of the pipeline. An outer blocking layer is arranged on the inner ring wall of the vacuum layer, an inner blocking layer is arranged on the inner ring wall of the vacuum layer, reinforcing ribs are arranged between the outer blocking layer and the inner blocking layer, an air exhaust head is installed on the protection layer, a pipeline is installed on the air exhaust head, and the other end of the pipeline is connected with the vacuum layer. The metal hose solves the problem that most metal hoses are poor in cold resistance and low temperature resistance, the low temperature resistance of the metal hose is improved, and the problem that normal transmission of media is affected due to the fact that pipelines are prone to frost crack in low-temperature weather is solved.

Description

Technical Field

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

[0002] Metal hose is an important component of the connecting pipeline of modern industrial equipment. The hose body has strong flexibility, scalability, bending and vibration resistance. It also has the characteristics of high and low temperature resistance, light weight, small size and good softness. Metal hose is widely used in aviation, aerospace, petroleum, chemical, metallurgy, electric power, papermaking, wood, textile, construction, medicine, food, tobacco, transportation and other industries.

[0003] The existing devices have the following shortcomings when in use: most of the existing metal hoses have limited cold resistance and low temperature resistance, and are easily frozen and cracked in low temperature weather, and the medium is easily affected by the low temperature, affecting the normal transmission of the medium. Utility Model Content

[0004] The utility model aims to provide a low temperature resistant metal hose to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature resistant metal hose, comprising a metal hose body, a protective layer, an exhaust head, a vacuum layer, a pipeline, a fixing cap and a blocking pad, a protective layer is sleeved on the outer wall of the metal hose body, a vacuum layer is opened in the protective layer, an outer barrier layer is arranged on the outer ring wall of the vacuum layer, an inner barrier layer is arranged on the inner ring wall of the vacuum layer, reinforcing ribs are arranged between the outer barrier layer and the inner barrier layer, an exhaust head is installed on the protective layer, a pipeline is installed on the exhaust head, the other end of the pipeline is connected to the vacuum layer, by sleeved the protective layer on the outer wall of the metal hose body, a vacuum layer is opened in the protective layer, when in use, the fixing cap is rotated to be removed, and then cooperate with an exhaust pump or an exhaust The cylinder is connected to the vacuum head, the vacuum rod of the vacuum pump or the vacuum cylinder is inserted into the vacuum port on the pipeline, and the blocking pad is pushed away, and then air is pumped out to extract the air in the vacuum layer to form a vacuum in the vacuum layer. After the vacuum is completed, the vacuum rod of the vacuum pump or the vacuum cylinder is pulled out, and then the fixing cap is rotated to seal. At the same time, due to the resilience of the spring, the blocking pad is offset against the vacuum port, and the reinforcing ribs arranged between the outer barrier layer and the inner barrier layer prevent the protective layer from deforming. The vacuum environment formed in the vacuum layer can well block temperature conduction. With the outer barrier layer and the inner barrier layer made of glass fiber, the problem of poor cold resistance and low temperature resistance of most metal hoses is solved, the low temperature resistance of the metal hose is improved, and the problem of easy freezing and cracking of the pipeline in low temperature weather affecting the normal transmission of the medium is avoided.

[0006] In a further embodiment, a fixing cap is threadedly installed on the vacuum head, a spring is installed at the vacuum port on the pipe, and the other end of the spring is connected to a blocking pad. The vacuum layer can be easily evacuated by rotating the fixing cap forward and backward. The spring installed at the vacuum port on the pipe cooperates with the blocking pad to seal the vacuum port.

[0007] In a further embodiment, connecting flanges are installed at both ends of the metal hose body, an insulation layer is provided on the outer wall of the metal hose body, and an anti-corrosion layer is provided on the inner wall of the metal hose body. The insulation layer provided on the outer wall of the metal hose body serves to insulate the metal hose body, and the anti-corrosion layer provided on the inner wall of the metal hose body increases the corrosion resistance of the inner wall of the metal hose body.

[0008] In a further embodiment, the vacuum head can be used in conjunction with equipment such as a vacuum pump or a vacuum cylinder, and the outer barrier layer and the inner barrier layer are made of fiberglass. The vacuum head can be used in conjunction with equipment such as a vacuum pump or a vacuum cylinder, and the outer barrier layer and the inner barrier layer are made of fiberglass, which can block temperature conduction.

[0009] In a further embodiment, the blocking pad is a plastic plate and a silicone pad is installed on one side, and a sealing ring is installed on the inner wall of the fixing cap. The silicone pad installed on one side of the blocking pad and the sealing ring installed on the inner wall of the fixing cap increase the sealing of the vacuum layer.

[0010] In a further embodiment, the connections between the metal hose body and the protective layer at both ends are blocked.

[0011] Compared with the prior art, the beneficial effects of the utility model are: solving the problem that most metal hoses are not resistant to cold and low temperatures, improving the low temperature resistance of metal hoses, and avoiding the problem that pipelines are easily frozen and cracked in low temperature weather, affecting the normal transmission of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 This is a front view structural schematic diagram of the utility model;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the enlarged structure of the air extraction port of the utility model.

[0016] In the figure: 1. Metal hose body; 2. Protective layer; 3. Connecting flange; 4. Vacuum head; 5. Fixing cap; 6. Vacuum layer; 7. Outer barrier layer; 8. Inner barrier layer; 9. Reinforcing ribs; 10. Anti-corrosion layer; 11. Insulation layer; 12. Pipeline; 13. Vacuum port; 14. Spring; 15. Blocking pad. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] See also Figure 1-4 , comprising a metal hose body 1, a protective layer 2, an exhaust head 4, a vacuum layer 6, a pipeline 12, a fixing cap 5 and a blocking pad 15, wherein the outer wall of the metal hose body 1 is covered with a protective layer 2, a vacuum layer 6 is provided in the protective layer 2, an outer barrier layer 7 is provided on the outer ring wall of the vacuum layer 6, an inner barrier layer 8 is provided on the inner ring wall of the vacuum layer 6, and a reinforcing rib 9 is provided between the outer barrier layer 7 and the inner barrier layer 8, an exhaust head 4 is installed on the protective layer 2, a pipeline 12 is installed on the exhaust head 4, and the other end of the pipeline 12 is connected to the vacuum layer 6. By covering the outer wall of the metal hose body 1 with a protective layer 2, a vacuum layer 6 is provided in the protective layer 2, when in use, the fixing cap 5 is rotated to be removed, and then the exhaust head 4 is connected with an exhaust pump or a vacuum cylinder, and the exhaust head 4 is connected with the exhaust head 4. The suction rod of the vacuum pump or vacuum cylinder is inserted into the suction port 13 on the pipe 12, and the blocking pad 15 is pushed open, and then air is pumped out to extract the air in the vacuum layer 6 to form a vacuum in the vacuum layer 6. After the suction is completed, the suction rod of the vacuum pump or vacuum cylinder is pulled out, and then the fixing cap 5 is rotated to seal. At the same time, due to the rebound force of the spring 14, the blocking pad 15 is offset against the suction port 13, and the reinforcing ribs 9 arranged between the outer barrier layer 7 and the inner barrier layer 8 prevent the protective layer 2 from deforming. The vacuum environment formed in the vacuum layer 6 can well block temperature conduction. With the outer barrier layer 7 and the inner barrier layer 8 made of glass fiber, the problem of poor cold resistance and low temperature resistance of most metal hoses is solved, the low temperature resistance of the metal hose is improved, and the problem of easy freezing and cracking of the pipeline in low temperature weather affecting the normal transmission of the medium is avoided.

[0019] See also Figure 1-4A fixing cap 5 is threadedly installed on the vacuum head 4, a spring 14 is installed at the vacuum port 13 on the pipe 12, and a blocking pad 15 is connected to the other end of the spring 14. The vacuum layer 6 can be easily evacuated by rotating the fixing cap 5 forward and reversely. The spring 14 installed at the vacuum port 13 on the pipe 12 cooperates with the blocking pad 15 to seal the vacuum port 13. Connecting flanges 3 are installed at both ends of the metal hose body 1. An insulation layer 11 is provided on the outer wall of the metal hose body 1, and an anti-corrosion layer 10 is provided on the inner wall of the metal hose body 1. The insulation layer 11 provided on the outer wall of the metal hose body 1 serves to keep the metal hose body 1 warm, and the anti-corrosion layer 10 provided on the inner wall of the metal hose body 1 increases the corrosion resistance of the inner wall of the metal hose body 1.

[0020] See also Figure 1-4 The vacuum head 4 can be used in conjunction with equipment such as a vacuum pump or a vacuum cylinder. The outer barrier layer 7 and the inner barrier layer 8 are made of glass fiber. The vacuum head 4 can be used in conjunction with equipment such as a vacuum pump or a vacuum cylinder. The outer barrier layer 7 and the inner barrier layer 8 are made of glass fiber, which can block temperature conduction. The blocking pad 15 is a plastic plate and a silicone pad is installed on one side. A sealing ring is installed on the inner wall of the fixing cap 5. The silicone pad installed on one side of the blocking pad 15 and the sealing ring installed on the inner wall of the fixing cap 5 increase the sealing of the vacuum layer 6. The connection between the two ends of the metal hose body 1 and the protective layer 2 is blocked.

[0021] Working principle: a protective layer 2 is mounted on the outer wall of the metal hose body 1, and a vacuum layer 6 is provided in the protective layer 2. When in use, the fixing cap 5 is removed by rotating it, and then the vacuum pump or vacuum cylinder is connected to the vacuum head 4, the vacuum rod of the vacuum pump or vacuum cylinder is inserted into the vacuum port 13 on the pipe 12, and the blocking pad 15 is pushed open, and then air is pumped out to extract the air in the vacuum layer 6, so that the vacuum layer 6 forms a vacuum. After the vacuuming is completed, the vacuum rod of the vacuum pump or vacuum cylinder is pulled out, and then the fixing cap 5 is rotated for sealing. At the same time, due to the rebound force of the spring 14, the blocking pad 15 is offset against the vacuum port 13, and the reinforcing ribs 9 arranged between the outer barrier layer 7 and the inner barrier layer 8 prevent the protective layer 2 from deforming. The vacuum environment formed in the vacuum layer 6 can well block temperature conduction. With the outer barrier layer 7 and the inner barrier layer 8 made of glass fiber, the problem of poor cold resistance and low temperature resistance of most metal hoses is solved, the low temperature resistance of the metal hose is improved, and the problem of easy freezing and cracking of the pipeline in low temperature weather affecting the normal transmission of the medium is avoided.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A low temperature resistant metal hose, comprising a metal hose body (1), a protective layer (2), a vacuum head (4), a vacuum layer (6), a pipeline (12), a fixing cap (5) and a plugging pad (15), characterized in that: A protective layer (2) is sleeved on the outer wall of the metal hose body (1), a vacuum layer (6) is opened in the protective layer (2), an outer barrier layer (7) is arranged on the outer ring wall of the vacuum layer (6), an inner barrier layer (8) is arranged on the inner ring wall of the vacuum layer (6), reinforcing ribs (9) are arranged between the outer barrier layer (7) and the inner barrier layer (8), a vacuum head (4) is installed on the protective layer (2), a pipe (12) is installed on the vacuum head (4), and the other end of the pipe (12) is connected to the vacuum layer (6).

2. A low temperature resistant metal hose according to claim 1, characterized in that: A fixing cap (5) is threadedly mounted on the vacuum head (4), a spring (14) is mounted at the vacuum port (13) on the pipeline (12), and a blocking pad (15) is connected to the other end of the spring (14).

3. The low temperature resistant metal hose according to claim 1, characterized in that: Connecting flanges (3) are installed at both ends of the metal hose body (1), a heat-insulating layer (11) is arranged on the outer wall of the metal hose body (1), and an anti-corrosion layer (10) is arranged on the inner wall of the metal hose body (1).

4. The low temperature resistant metal hose according to claim 1, characterized in that: The vacuum head (4) can be used in conjunction with a vacuum pump or a vacuum cylinder, and the outer barrier layer (7) and the inner barrier layer (8) are made of glass fiber.

5. The low temperature resistant metal hose according to claim 1, characterized in that: The blocking pad (15) is a plastic plate with a silicone pad installed on one side surface, and a sealing ring is installed on the inner wall of the fixing cap (5).

6. The low temperature resistant metal hose according to claim 1, characterized in that: The connection points between the two ends of the metal hose body (1) and the protective layer (2) are blocked.

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