An electrically heated vulcanization system

Abstract

The application discloses an electric heating vulcanization system, which comprises an air inlet end, a first three-way cut-off valve, a second three-way cut-off valve, a circulating pipeline, an air outlet end, a closed circulation driving device, a central heating mechanism and a special heating device. The first three-way cut-off valve and the second three-way cut-off valve are arranged in the circulating pipeline, the central heating mechanism and the special heating device are arranged between the first three-way cut-off valve and the second three-way cut-off valve, the air inlet end is arranged at an air inlet of the first three-way cut-off valve, and the air outlet end is arranged at an air outlet of the second three-way cut-off valve. The electric heating vulcanization system provided by the application is low in cost and simple in processing compared with the prior art, and can ensure to meet the tire vulcanization process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire vulcanization technology, and more particularly to an electric heating vulcanization system. BACKGROUND

[0002] In the original tire vulcanization production, the vulcanization process uses high-pressure steam heating and delays heating to the required time, then nitrogen is introduced to pressurize, so that the tire is fully attached to the mold at the set pressure, which meets the requirements of the tire vulcanization process, and the tire blank is vulcanized. This vulcanization process will pollute the environment. In recent years, with the continuous updating of technology, electric heating gradually realizes the vulcanization process, such as adding a heating device inside the capsule, adding a high-temperature resistant stirring fan inside the capsule, stirring the internal temperature evenly, and stopping heating after heating to a certain time to achieve tire vulcanization process. Electric heating vulcanization is realized.

[0003] This process removes high-pressure steam in the traditional process, reduces environmental pollution during vulcanization, and reduces energy loss during vulcanization. However, if the heating device is damaged, the tire will also be scrapped.

[0004] In summary, how to solve the problem of tire scrapping after the heating device is damaged is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0005] Therefore, the purpose of the present application is to provide an electric heating vulcanization system, which can still work normally after the center heating mechanism is damaged, avoiding tire scrapping.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] An electric heating vulcanization system, comprising: an air inlet end, a first three-way cut-off valve, a second three-way cut-off valve, a circulation pipeline, an air outlet end, a closed circulation driving device, a center heating mechanism and a backup heating device, the first three-way cut-off valve and the second three-way cut-off valve are arranged in the circulation pipeline, the center heating mechanism and the backup heating device are arranged between the first three-way cut-off valve and the second three-way cut-off valve, the air inlet end is arranged at the air inlet of the first three-way cut-off valve, and the air outlet end is arranged at the air outlet of the second three-way cut-off valve.

[0008] Preferably, the closed circulation driving device comprises two circulation pumps, and the two circulation pumps are arranged in parallel in the circulation pipeline.

[0009] Preferably, the closed circulation driving device comprises two fans, and the two fans are arranged in parallel in the circulation pipeline.

[0010] Preferably, the backup heating device is arranged on the circulating pipeline between the center heating mechanism and the second three-way cut-off valve.

[0011] Preferably, a filter is arranged on the circulating pipeline between the backup heating device and the second three-way cut-off valve.

[0012] Preferably, the center heating mechanism comprises a center heater and a temperature sensor, both of which are connected with the circulating pipeline.

[0013] Preferably, the center heater comprises an upper ring oil cylinder, a spray cover, a plurality of straight-line heating pipes, a ring-shaped heating assembly and an end heating assembly, the spray cover is arranged at the end of the upper ring oil cylinder, all the straight-line heating pipes are arranged in a circumferential direction around the upper ring oil cylinder, all the straight-line heating pipes are arranged along the length direction of the upper ring oil cylinder, all the straight-line heating pipes are arranged in series, the gas outlet of adjacent straight-line heating pipes is connected with the gas inlet, the gas inlet of one end of the straight-line heating pipe is connected with the circulating pipeline, the gas outlet of the other end of the straight-line heating pipe is connected with the circulating pipeline, the spray cover is arranged at the end of all the straight-line heating pipes, all the straight-line heating pipes are connected with the spray cover, the spray cover is provided with a plurality of air holes, the air holes are connected with the end heating assembly, and the ring-shaped heating assembly is arranged on the outer wall of all the straight-line heating pipes.

[0014] Preferably, the ring-shaped heating assembly comprises a first ring-shaped heating barrel and a second ring-shaped heating barrel, the diameter of the first ring-shaped heating barrel is smaller than that of the second ring-shaped heating barrel, all the straight-line heating pipes are arranged between the first ring-shaped heating barrel and the second ring-shaped heating barrel, the first ring-shaped heating barrel is arranged in the second ring-shaped heating barrel, and the first ring-shaped heating barrel is sleeved on the outer periphery of the main frame body.

[0015] Preferably, all the air holes of the spray cover are arranged in a spiral manner from one end to the other end of the spray cover.

[0016] Preferably, the end heating assembly comprises a heating piece and a protective cover, the heating piece is connected with the end of the spray cover, the protective cover is buckled on the heating piece, and the protective cover is connected with the spray cover.

[0017] The electric heating vulcanization system provided by the application has low cost and simple processing compared with the existing center mechanism internal circulation heating, when the center heating mechanism is damaged, the backup heating device can be started to heat the nitrogen in the circulating pipeline, so as to ensure the normal progress of the vulcanization process and ensure that the tire vulcanization process is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on the provided drawings are within the scope of the present application.

[0019] Figure 1 A schematic diagram of the electric heating vulcanization system provided by the present application;

[0020] Figure 2 A sectional view of the center heating mechanism provided by the present application;

[0021] Figure 3 A sectional view of the spray cover provided by the present application;

[0022] Figure 4 A sectional view of the center heater provided by the present application;

[0023] Figure 5 A sectional view of the straight-line heating pipeline provided by the present application.

[0024] Figures 1-5 In the center heating mechanism provided by the present application,

[0025] 1 - air inlet end, 2 - air outlet end, 3 - first three-way shut-off valve, 4 - circulation pipeline, 5 - second three-way shut-off valve, 6 - circulation driving device, 7 - filter, 8 - backup heating device, 9 - center heating mechanism, 10 - center heater, 11 - sensor, 12 - end heating assembly, 13 - spray cover, 14 - straight-line heating pipeline, 15 - annular heating assembly, 16 - upper annular oil cylinder, 17 - air hole, 18 - heating rod, 19 - second annular heating barrel, 20 - first annular heating barrel. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0027] The core of the present application is to provide an electric heating vulcanization system, which can still work normally after the center heating mechanism is damaged, avoiding tire scrapping.

[0028] Please refer to Figures 1-5The application relates to an electric heating vulcanization system, which comprises an air inlet end 1, a first three-way cut-off valve 3, a second three-way cut-off valve 5, a circulating pipeline 4, an air outlet end 2, a closed circulation driving device 6, a central heating mechanism 9 and a special heating device 8, the first three-way cut-off valve 3 and the second three-way cut-off valve 5 are arranged on the circulating pipeline 4, the central heating mechanism 9 and the special heating device 8 are arranged between the first three-way cut-off valve 3 and the second three-way cut-off valve 5, the air inlet end 1 is arranged on an air inlet of the first three-way cut-off valve 3, and the air outlet end 2 is arranged on an air outlet of the second three-way cut-off valve 5.

[0029] It is to be noted that the first three-way cut-off valve 3 and the second three-way cut-off valve 5 each comprise three air inlets, the air inlet end 1 is connected with an air inlet of the first three-way cut-off valve 3, the first three-way cut-off valve 3 is arranged on the circulating pipeline 4, and the other two air inlets of the first three-way cut-off valve 3 are connected with the circulating pipeline 4 respectively. The air outlet end 2 is connected with an air outlet of the second three-way cut-off valve 5, the second three-way cut-off valve 5 is arranged on the circulating pipeline 4, and the other two air inlets of the second three-way cut-off valve 5 are connected with the circulating pipeline 4 respectively. The closed circulation driving device 6 is used for driving nitrogen in the circulating pipeline 4 to move along the circulating pipeline 4.

[0030] In use, the air inlet of the first three-way cut-off valve 3 is opened, the air outlet of the second three-way cut-off valve 5 is closed, the other two air inlets of the first three-way cut-off valve 3 are opened, the other two air inlets of the second three-way cut-off valve 5 are opened, rated pressure and normal temperature nitrogen is introduced into the electric heating vulcanization system through the air inlet end 1, the central heating mechanism 9 is opened to heat the nitrogen, when the nitrogen pressure in the circulating pipeline 4 reaches the set pressure, the air inlet of the first three-way cut-off valve 3 is closed, the closed circulation driving device 6 is opened to drive the nitrogen in the circulating pipeline 4 to move along the circulating pipeline 4, and the nitrogen forms a circulation in the circulating pipeline 4, the first three-way cut-off valve 3, the central heating mechanism 9, the special heating device 8 and the second three-way cut-off valve. When the temperature reaches the set high temperature, the closed circulation driving device 6 and the central heating mechanism 9 are closed. When the temperature drops to the set low temperature, the closed circulation driving device 6 and the central heating mechanism 9 are opened to continue heating. The above-mentioned circulation operation is continued until the time required by the vulcanization process is reached, then the central heating mechanism 9 and the closed circulation driving device 6 are closed, the air outlet of the second three-way cut-off valve 5 is opened, the nitrogen in the circulating pipeline 4 is discharged along the air outlet end 2 to the standby device for recycling, and the vulcanization operation is completed.

[0031] The present application is more energy-saving than the prior electric heating process of heating outside the capsule, because nitrogen is an inert gas, its specific heat capacity is Cp: 1.038 J / (g*K), the specific heat capacity of water vapor is Cp: 1.525 J / (g*K), and the specific heat capacity of conversion into liquid is Cp: 4.19 J / (g*K). It can be seen from the formula for calculating heat Q that time has a great effect on nitrogen for a certain amount of heat, and cannot be transported over a long distance. Therefore, the present application heats in the capsule, absorbs and releases heat from the nearby nitrogen, and has high temperature control precision and high efficiency inside the capsule.

[0032] The electric heating vulcanization system provided by the present application has low cost and simple and convenient processing compared with the prior central mechanism internal circulation heating. When the central heating mechanism 9 is damaged, the special heating device 8 can be started to heat the nitrogen in the circulation pipeline 4, so that the normal vulcanization process is ensured, and the tire vulcanization process is ensured to meet the requirements.

[0033] In order to ensure the normal operation of the electric heating vulcanization system, on the basis of the above embodiment, as a further preferred, the closed loop driving device 6 includes two circulation pumps, and the two circulation pumps are arranged in parallel in the circulation pipeline 4. When the system circulates and heats the nitrogen, one circulation pump is started, and the other circulation pump is not started. When the working circulation pump is damaged, the other circulation pump can be started to replace the working circulation pump, so that the heating of the nitrogen by the system is avoided.

[0034] In addition to using a circulation pump, other closed loop driving devices 6 can also be used. On the basis of the above embodiment, as a further preferred, the closed loop driving device 6 includes two fans, and the two fans are arranged in parallel in the circulation pipeline 4. The fans have the same effect as the circulation pumps, and can be used in combination according to actual application conditions, for example, one circulation pump and one fan are arranged on two parallel pipelines respectively.

[0035] The number and position of the special heating device 8 can be arranged according to actual application conditions. On the basis of the above embodiment, as a further preferred, the circulation pipeline 4 between the central heating mechanism 9 and the first three-way cut-off valve 3 and the circulation pipeline 4 between the central heating mechanism 9 and the second three-way cut-off valve 5 are provided with the special heating device 8. By arranging two special heating devices 8, one or both of them can be started according to actual application conditions to achieve different heating effects. If one special heating device 8 cannot work normally, the other special heating device 8 can also be started to work normally.

[0036] In order to ensure the cleanliness of the circulation pipeline 4 and reduce the pollution of gas discharge, on the basis of the above embodiment, as a further preferred, a filter 7 is arranged on the circulation pipeline 4 between the special heating device 8 and the second three-way cut-off valve 5. The filter 7 can filter impurities in the gas in the circulation pipeline 4, and filter impurities in the gas discharged to the atmosphere along the second three-way cut-off valve 5.

[0037] On the basis of the above-mentioned embodiments, as a further preferred embodiment, the central heating mechanism 9 comprises a central heater 10 and a temperature sensor 11, both of which are connected to the circulation pipeline 4. The temperature sensor 11 is used to detect the temperature of the circulation pipeline 4, and when the temperature of the circulation pipeline 4 reaches a set high temperature, a signal can be transmitted to the personnel or control system, which controls the central heater 10 to stop heating. When the temperature of the circulation pipeline 4 reaches a set low temperature, a signal can be transmitted to the personnel or control system, which controls the central heater 10 to stop heating.

[0038] The special heating device 8 is also provided with a temperature sensor 11 to control the heating temperature.

[0039] On the basis of the above-mentioned embodiments, as a further preferred embodiment, the central heater 10 comprises an upper ring oil cylinder 16, a spray cover 13, a plurality of straight-line heating pipelines 14, a ring-shaped heating assembly 15, and an end heating assembly 12. The spray cover 13 is arranged at the end of the upper ring oil cylinder 16, all the straight-line heating pipelines 14 are arranged circumferentially around the upper ring oil cylinder 16, all the straight-line heating pipelines 14 are arranged along the length direction of the upper ring oil cylinder 16, all the straight-line heating pipelines 14 are connected in series, the gas inlet of one end of the straight-line heating pipeline 14 is connected to the circulation pipeline 4, the gas outlet of the other end of the straight-line heating pipeline 14 is connected to the circulation pipeline 4, the spray cover 13 is arranged at the end of all the straight-line heating pipelines 14, all the straight-line heating pipelines 14 are connected to the spray cover 13, the spray cover 13 is provided with a plurality of gas holes 17, the gas holes 17 are connected to the end heating assembly 12, and the ring-shaped heating assembly 15 is arranged on the outer wall of all the straight-line heating pipelines 14.

[0040] After the plurality of straight-line heating pipelines 14 are combined and connected, a plurality of U-shaped pipelines connected in sequence are formed. The gas enters through the gas inlet of one end of the straight-line heating pipeline 14, and is discharged through the gas outlet of the other end of the straight-line heating pipeline 14. The gas in the heating pipeline is sprayed onto the end heating assembly 12 through the gas holes 17 of the spray cover 13 connected to the heating pipeline. After the end heating assembly 12 heats the gas, the gas is discharged to other heating pipelines through other gas holes 17. Since a plurality of heating pipelines are arranged, and the ring-shaped heating assembly 15 is arranged outside the straight-line heating pipeline 14, the nitrogen gas can be heated more uniformly, and the heating efficiency is improved.

[0041] On the basis of the above-mentioned embodiments, as a further preferred, the annular heating assembly 15 comprises a first annular heating barrel 20 and a second annular heating barrel 19, the diameter of the first annular heating barrel 20 is smaller than the diameter of the second annular heating barrel 19, all the straight heating pipes 14 are arranged between the first annular heating barrel 20 and the second annular heating barrel 19, the first annular heating barrel 20 is arranged in the second annular heating barrel 19, and the first annular heating barrel 20 is sleeved on the outer periphery of the main frame. The first annular heating barrel and the second annular heating barrel can heat the straight heating pipes 14 from the radial inner side and the radial outer side of the straight heating pipes 14 respectively, thereby improving the heating efficiency. In order to further improve the heating efficiency, heating rods 18 are arranged between adjacent straight heating pipes 14.

[0042] On the basis of the above-mentioned embodiments, as a further preferred, all the air holes 17 of the spray cover 13 are arranged spirally from one end to the other end of the spray cover 13. The spirally arranged air holes 17 can make the gas spraying generate centrifugal force and be sprayed more uniformly on the end heating assembly 12, thereby improving the gas heating effect.

[0043] On the basis of the above-mentioned embodiments, as a further preferred, the end heating assembly 12 comprises a heating piece and a protective cover, the heating piece is connected with the end of the spray cover 13, the protective cover is buckled on the heating piece, and the protective cover is connected with the spray cover 13. After the vulcanization is completed, the capsule is under the protective cover, so that the capsule is not separated from the end heating assembly 12, thereby effectively improving the service life of the capsule and the end heating assembly 12.

[0044] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] The electric heating vulcanization system provided by the present application is described in detail above. In this paper, specific examples are applied to describe the principles and implementation modes of the present application. The above embodiment is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An electrically heated vulcanization system characterized by, The application relates to a closed-loop circulation heating device, which comprises an air inlet end (1), a first three-way cut-off valve (3), a second three-way cut-off valve (5), a circulation pipeline (4), an air outlet end (2), a closed-loop driving device (6), a central heating mechanism (9) and a standby heating device (8), the first three-way cut-off valve (3) and the second three-way cut-off valve (5) are arranged in the circulation pipeline (4), the central heating mechanism (9) and the standby heating device (8) are arranged between the first three-way cut-off valve (3) and the second three-way cut-off valve (5), the air inlet end (1) is arranged at an air inlet of the first three-way cut-off valve (3), and the air outlet end (2) is arranged at an air outlet of the second three-way cut-off valve (5). The standby heating device (8) is arranged in the circulation pipeline (4) between the central heating mechanism (9) and the first three-way cut-off valve (3) and in the circulation pipeline (4) between the central heating mechanism (9) and the second three-way cut-off valve (5). The central heating mechanism (9) comprises a central heater (10) and a temperature sensor (11), and the central heater (10) and the temperature sensor (11) are connected with the circulation pipeline (4). The central heater (10) comprises an upper ring oil cylinder (16), a spraying cover (13), a plurality of straight-line heating pipelines (14), a ring-shaped heating assembly (15) and an end heating assembly (12), the spraying cover (13) is arranged at the end of the upper ring oil cylinder (16), all the straight-line heating pipelines (14) are arranged in a circumferential direction around the upper ring oil cylinder (16), all the straight-line heating pipelines (14) are arranged along the length direction of the upper ring oil cylinder (16), all the straight-line heating pipelines (14) are connected in series, the air inlets and outlets of adjacent straight-line heating pipelines (14) are connected with each other, the air inlet of one end of the straight-line heating pipeline (14) is connected with the circulation pipeline (4), the air outlet of the other end of the straight-line heating pipeline (14) is connected with the circulation pipeline (4), the spraying cover (13) is arranged at the end of all the straight-line heating pipelines (14), all the straight-line heating pipelines (14) are connected with the spraying cover (13), the spraying cover (13) is provided with a plurality of air holes (17), the air holes (17) are connected with the end heating assembly (12), and the ring-shaped heating assembly (15) is arranged on the outer wall of all the straight-line heating pipelines (14). The closed-loop driving device (6) comprises two circulation pumps which are arranged in parallel in the circulation pipeline (4).

2. The electrically heated curing system of claim 1, wherein, The closed-loop driving device (6) comprises two fans which are arranged in parallel in the circulation pipeline (4).

3. The electrically heated curing system of claim 1, wherein, A filter (7) is arranged in the circulation pipeline (4) between the standby heating device (8) and the second three-way cut-off valve (5).

4. The electrically heated curing system of claim 1, wherein, ​ 5. The electrically heated curing system of claim 1, wherein, The annular heating assembly (15) comprises a first annular heating barrel (20) and a second annular heating barrel (19), the diameter of the first annular heating barrel (20) is smaller than the diameter of the second annular heating barrel (19), all the straight heating pipes (14) are arranged between the first annular heating barrel (20) and the second annular heating barrel (19), the first annular heating barrel (20) is arranged in the second annular heating barrel (19), and the first annular heating barrel (20) is sleeved on the outer periphery of the main frame body.

6. The electrically heated curing system of claim 1, wherein, All the air holes (17) of the spray cover (13) are spirally arranged from one end to the other end of the spray cover (13).

7. The electrically heated curing system of claim 1, wherein, The end heating assembly (12) comprises a heating piece and a protective cover, the heating piece is connected with the end of the spray cover (13), the protective cover is buckled on the heating piece, and the protective cover is connected with the spray cover (13).

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