Gas path system of vulcanization medium, tire vulcanization system and tire vulcanization method

Abstract

This invention belongs to the field of tire vulcanization technology and discloses a gas path system for vulcanizing media, including a bladder, a gas supply device, a low-pressure pipeline, a pressure-reducing and shaping component, a high-pressure pipeline, a pressurizing component, a heating tank, and a circulating pump. The two ends of the low-pressure pipeline are connected to the inlet of the gas supply device and the bladder, respectively; the pressure-reducing and shaping component is located in the low-pressure pipeline; the two ends of the high-pressure pipeline are connected to the inlet of the gas supply device and the bladder, respectively; the pressurizing component is located in the high-pressure pipeline; the heating tank is located in the high-pressure pipeline and between the pressurizing component and the bladder, allowing the high-pressure gas to be heated within the heating tank; the circulating pump is located on the high-pressure pipeline, with its outlet connected to the heating tank, and the outlets of the pressurizing component and the bladder connected to the inlet of the circulating pump, forming a heating and circulating branch for the gas medium. This gas path system for vulcanizing media can avoid energy loss; improve the working environment of the vulcanization workshop; prevent condensation in the pipeline; and reduce vacuuming time.

Description

Technical Field

[0001] This invention relates to the field of tire vulcanization technology, and more particularly to a gas path system for vulcanizing media, a tire vulcanization system, and a tire vulcanization method. Background Technology

[0002] Traditional tire vulcanizing machines use steam and nitrogen, or steam and superheated water to create high-temperature steam as the vulcanizing medium, such as 1.7 MPa high-temperature steam, primarily to heat the inside of the tire. However, high-pressure steam requires a power boiler or centralized gas supply. During pipeline transmission, various losses occur, such as temperature drop leading to condensation, pressure drop over long distances, and pipeline leaks, all resulting in significant energy waste. Furthermore, the steam pipelines within the vulcanizing workshop cause excessively high temperatures, typically reaching 45℃-50℃, affecting personnel work. In addition, with steam vulcanization, some condensate remains in the pipeline after each vulcanization cycle. This condensate vaporizes instantly in the hot pipeline, requiring additional vacuuming time, increasing equipment cycle time and reducing work efficiency.

[0003] Therefore, there is an urgent need to propose a gas path system for vulcanizing media, a tire vulcanizing system, and a tire vulcanizing method to solve the above problems. Summary of the Invention

[0004] The first objective of this invention is to provide a gas path system for a vulcanizing medium that can avoid energy loss, improve the working environment of the vulcanizing workshop, prevent condensation in the pipeline, and reduce vacuuming time.

[0005] To achieve this objective, the present invention adopts the following technical solution: The gas path system for the vulcanizing medium includes: capsule; A gas supply device, which is capable of providing a gaseous medium; A low-pressure pipeline, the two ends of which are respectively connected to the gas supply device and the inlet of the capsule; A pressure-reducing and shaping assembly is located in the low-pressure pipeline, and the gas medium can be reduced and shaped by the pressure-reducing and shaping assembly to form a shaped gas. A high-pressure pipeline, the two ends of which are respectively connected to the gas supply device and the inlet of the capsule; A pressurizing assembly is located in the high-pressure pipeline, and the gas medium can be formed into high-pressure gas by passing through the pressurizing assembly; A heating tank is located in the high-pressure pipeline and between the pressurization assembly and the capsule, and the high-pressure gas can be heated inside the heating tank; A circulation pump is located on the high-pressure pipeline. The outlet of the circulation pump is connected to the heating tank, and the outlets of the pressurization component and the capsule are respectively connected to the inlet of the circulation pump to form a heating circulation branch for the gas medium.

[0006] As an optional technical solution for the gas path system of the sulfidation medium, the pressure reducing and shaping component includes a pressure reducing valve, a water separator and a pressure balancing valve connected in sequence. The gas medium is depressurized by the pressure reducing valve, dried by the water separator and balanced by the pressure balancing valve in sequence.

[0007] As an optional technical solution for the gas path system of the vulcanizing medium, the pressure reducing and shaping component also includes a shaping check valve, which is located between the pressure balancing valve and the inlet of the capsule. Excess pressure in the capsule can release pressure from the shaping check valve.

[0008] As an optional technical solution for the gas path system of the sulfidation medium, the pressurization component includes a throttling orifice and a first normally closed solenoid valve connected in sequence, and the gas medium is pressurized into the high-pressure gas through the throttling orifice.

[0009] As an optional technical solution for the gas path system of the vulcanizing medium, the heating circulation branch further includes a first switching valve and a second switching valve. The first switching valve is located between the circulation pump and the heating tank, and the second switching valve is located downstream of the circulation pump.

[0010] As an optional technical solution for the gas path system of the vulcanizing medium, the gas path system of the vulcanizing medium further includes a recovery device and a recovery pipeline. The two ends of the recovery pipeline are respectively connected to the outlet of the capsule and the recovery device, and the gas medium inside the capsule can be recovered to the recovery device through the recovery pipeline.

[0011] As an optional technical solution for the gas path system of the vulcanizing medium, the gas path system of the vulcanizing medium further includes a main discharge pipeline and a main discharge device. The two ends of the main discharge pipeline are respectively connected to the outlet of the capsule and the main discharge device, and the internal pressure of the capsule can be completely released through the main discharge pipeline and the main discharge device.

[0012] As an optional technical solution for the gas path system of the vulcanizing medium, the gas path system of the vulcanizing medium further includes a vacuum pipeline and a vacuum device. The two ends of the vacuum pipeline are respectively connected to the outlet of the capsule and the vacuum device, and the vacuum device can evacuate the capsule through the vacuum pipeline.

[0013] The second objective of this invention is to provide a tire vulcanization system that consumes less energy and has high operating efficiency.

[0014] To achieve this objective, the present invention adopts the following technical solution: The tire vulcanization system includes a vulcanizing machine and a gas path system for the vulcanizing medium, wherein the high-pressure pipeline and the low-pressure pipeline are respectively connected to the bladder through the vulcanizing machine.

[0015] A third objective of this invention is to provide a tire vulcanization method that consumes less energy and is more efficient.

[0016] To achieve this objective, the present invention adopts the following technical solution: A tire vulcanization method, which uses the above-mentioned vulcanizing medium in a pneumatic system to vulcanize tires, includes the following steps: S1: Open the gas supply device and the low-pressure pipeline. The gas medium is depressurized and shaped by the pressure reducing and shaping component to form a shaped gas that enters the capsule. S2: Close the low-pressure pipeline and open the high-pressure pipeline. At the same time, the heating tank and the circulation pump work. The gas medium enters the capsule through the pressurization component. After the capsule reaches the set pressure, close the high-pressure pipeline. At this time, the capsule pressure remains at the set value. If the pressure inside the capsule is lower than the set value, open the high-pressure pipeline again to replenish the pressure. S3: After the vulcanization process is completed, the circulating pump stops, the gas medium inside the capsule is recovered, the pressure inside the capsule is completely released, and the tire is removed by evacuating the capsule.

[0017] The beneficial effects of this invention are: The gas path system for the vulcanizing medium provided by this invention includes a capsule, a gas supply device, a low-pressure pipeline, a pressure-reducing and shaping component, a high-pressure pipeline, a pressurizing component, a heating tank, and a circulating pump. The capsule, acting as a mold, transmits pressure and heat for tire vulcanization. The gas supply device provides nitrogen or other gaseous media for tire vulcanization. The gaseous media, via the pressure-reducing and shaping component on the low-pressure pipeline, forms a shaping gas to pre-inflate the capsule for shaping. The gaseous media, via the pressurizing component on the high-pressure pipeline, is pressurized into high-pressure gas to vulcanize the tire. During this process, the heating circulation branch formed by the heating tank and the circulating pump can circulate and heat the gaseous media entering the capsule. Compared to existing technologies, this method eliminates the need for steam or superheated water, allowing the use of only nitrogen as the vulcanizing medium through external circulation heating, avoiding energy loss and waste during transmission; improving the working environment of the vulcanization workshop; preventing condensation in the pipeline; and reducing vacuuming time.

[0018] Secondly, the main pipeline of the gas circuit system of this vulcanizing medium is roughly the same as the gas pipeline in the existing technology, and can be formed by improving the design of the existing pipeline, thus saving costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the gas path system for the vulcanizing medium provided by the present invention.

[0020] In the picture: 100. Capsule; 210. Gas supply device; 221. Pressure reducing valve; 222. Water separator; 223. Pressure balancing valve; 224. Fixed check valve; 245. Pneumatic shut-off valve; 246. Inlet / outlet connecting valve; 231. Throttling orifice; 232. First normally closed solenoid valve; 241. Heating tank; 242. Circulation pump; 243. First switching valve; 244. Second switching valve; 310. Recovery device; 321. Second normally closed solenoid valve; 410. Main discharge device; 421. Third normally closed solenoid valve; 510. Vacuum device; 521. Fourth normally closed solenoid valve; 610. First manual shut-off valve; 620. Second manual shut-off valve; 630. Third manual shut-off valve; 640. Fourth manual shut-off valve; 710. Silencing device; 721. Fifth normally closed solenoid valve. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0025] This embodiment provides a gas path system for a vulcanizing medium, which can avoid energy loss, improve the working environment of the vulcanizing workshop, prevent condensation in the pipeline, and reduce vacuuming time.

[0026] Specifically, such as Figure 1 As shown, the gas path system of the vulcanizing medium includes a capsule 100, a gas supply device 210, a low-pressure pipeline, a pressure-reducing and shaping component, a high-pressure pipeline, a pressurizing component, a heating tank 241, and a circulation pump 242. The gas supply device 210 provides the gas medium; the two ends of the low-pressure pipeline are connected to the inlets of the gas supply device 210 and the capsule 100, respectively; the pressure-reducing and shaping component is located in the low-pressure pipeline, allowing the gas medium to be depressurized and shaped into a shaped gas; the two ends of the high-pressure pipeline are connected to the inlets of the gas supply device 210 and the capsule 100, respectively; the pressurizing component is located in the high-pressure pipeline, allowing the gas medium to be formed into high-pressure gas; the heating tank 241 is located in the high-pressure pipeline and between the pressurizing component and the capsule 100, allowing the high-pressure gas to be heated within the heating tank 241; the circulation pump 242 is located in the high-pressure pipeline, with its outlet connected to the heating tank 241, and the outlets of the pressurizing component and the capsule 100 connected to the inlets of the circulation pump 242, forming a heating circulation branch for the gas medium.

[0027] Based on the above design, the capsule 100, acting as a mold, can transfer pressure and heat for tire vulcanization. The gas supply device 210 provides nitrogen and other gaseous media for tire vulcanization. The gaseous media forms a shaping gas, i.e., a low-pressure gas, through a pressure-reducing and shaping component on a low-pressure pipeline, which pre-inflates the capsule 100 to shape it. The gaseous media is then pressurized into high-pressure gas through a pressure-boosting component on a high-pressure pipeline to vulcanize the tire. During this process, the heating circulation branch formed by the heating tank 241 and the circulation pump 242 can circulate and heat the gaseous media entering the capsule 100. Compared with existing technologies, it does not require the use of steam or superheated water. By externally circulating and heating the gaseous media, only nitrogen can be used as the vulcanizing medium, avoiding energy loss and waste during transmission; improving the working environment of the vulcanization workshop; and preventing condensation in the pipeline, thus reducing vacuuming time. Furthermore, the main pipeline of the vulcanizing medium's gas path system is roughly the same as that in existing technologies, and can be modified by designing existing pipelines, saving costs.

[0028] It should be noted that the gas path system of the sulfidation medium described in this embodiment and Figure 1 The schematic diagrams of the gas path system for the vulcanizing medium shown are all based on the right capsule as an example. The gas path system and its schematic diagram for the left capsule are symmetrically arranged. In the schematic diagrams of the gas path system, the symbol DN represents the nominal diameter, a common standard diameter designation for pipes, valves, and fittings. For example, DN25 = nominal diameter 25mm, a commonly used medium diameter for vulcanizing pipelines. The symbol φ represents the orifice diameter of pipe valves with throttling function. Thermistor temperature sensors are installed inside capsule 100, at its inlet, inside heating tank 241, and at the inlet of circulating pump 242 for temperature measurement. During vulcanization, capsule 100 moves vertically up and down; therefore, metal flexible hoses are installed on the inlet and outlet pipes of capsule 100 to facilitate its vertical movement. Figure 1 A circular arc tube of DN40, wherein the heating tank 241 is located downstream of the metal hose on one side.

[0029] Of course, the nominal diameter and other parameters of the pipes and valves marked in the figure are only the optimal parameters under specific working conditions and are not a limitation of the present invention.

[0030] Optionally, the pressure-reducing and shaping assembly includes a pressure-reducing valve 221, a water separator 222, and a pressure-balancing valve 223 connected in sequence. The gas medium is sequentially reduced in pressure by the pressure-reducing valve 221, dried by the water separator 222, and balanced by the pressure-balancing valve 223. The pressure-reducing valve 221 can reduce the pressure of the gas medium to meet the pressure requirements for pre-filling the capsule 100; the water separator 222 removes moisture from the gas medium to prevent moisture from entering the capsule 100 and affecting subsequent vulcanization; the pressure-balancing valve 223 allows the gas medium to enter the capsule 100 at a stable pressure. Specifically, the pressure-balancing valve 223 is a self-overflowing gas pressure-balancing valve, controlled by an electric ratio valve, outputting a 1:1 pressure to the capsule 100.

[0031] Furthermore, the pressure-reducing and shaping assembly also includes a shaping check valve 224, which is located between the pressure balancing valve 223 and the capsule 100. Excess pressure in the capsule 100 can be relieved through the shaping check valve 224 to prevent excessive pressure in the capsule 100. Specifically, the pressure at port P of the shaping check valve 224 is greater than the pressure at port A. Normally, the shaping gas flows from port P to port A, and then through the heating tank 241 to the capsule 100. However, during the mold closing process, the capsule 100 is compressed, and the internal pressure increases. When the pressure at port A is greater than that at port P, the extra pressure is discharged from port A to port O.

[0032] In this embodiment, a pneumatic shut-off valve 245 is also provided on the low-pressure pipeline. One end of the pneumatic shut-off valve 245 is connected to the shaping check and pressure relief valve 224, and the other end is connected to the heating tank 241 and the circulating pump 242 on the high-pressure pipeline. That is, the pipeline path of the gas medium is reduced by connecting the heating tank 241 to the inlet of the capsule 100. At this time, the heating element in the heating tank 241 is not working and does not need to heat the shaping gas. The heating tank 241 only serves as a passage, and the low-pressure pipeline is opened or closed by the pneumatic shut-off valve 245.

[0033] Optionally, the pressurization assembly includes a throttling orifice 231 and a first normally closed solenoid valve 232 connected in sequence. The gas medium is pressurized into high-pressure gas through the throttling orifice 231; the first normally closed solenoid valve 232 can cut off the high-pressure pipeline.

[0034] In this embodiment, the nominal diameter of the throttling orifice 231 is φ6.

[0035] Optionally, the gas system of the vulcanizing medium also includes a main gas supply pipeline. One end of the main gas supply pipeline is connected to the gas supply device 210, and the other end of the main gas supply pipeline is connected to the low-pressure pipeline and the high-pressure pipeline respectively. The low-pressure pipeline and the high-pressure pipeline share the same gas outlet of the gas supply device 210 through the main gas supply pipeline, which saves parts and reduces the gas medium pipeline path.

[0036] Furthermore, the gas path system of the sulfidation medium also includes a filter located on the main gas supply line to filter impurities in the gas medium and prevent impurities from clogging the pipeline.

[0037] Optionally, the heating circulation branch also includes a first switching valve 243 and a second switching valve 244. The first switching valve 243 is located between the circulation pump 242 and the heating tank 241, and the second switching valve 244 is located downstream of the circulation pump 242. Both the first switching valve 243 and the second switching valve 244 are flow direction switching valves. By intermittently reciprocating control of the flow direction switching valves, it is ensured that the flow direction of the gas medium is in the direction of the arrow in the figure. The circulating gas medium passes through the heating tank 241 and then through the interior of the continuously circulating heating capsule 100.

[0038] It should be noted that heating tank 241 can be configured with 1 to 3 units, depending on the equipment size, such as 1, 2 or 3 units.

[0039] In this embodiment, a resistance wire is provided inside the heating tank 241 to heat the gas medium inside the heating tank 241.

[0040] Optionally, the gas path system of the vulcanizing medium also includes a recovery device 310 and a recovery pipeline. The two ends of the recovery pipeline are connected to the outlet of the capsule 100 and the recovery device 310, respectively, and the gas medium inside the capsule 100 can be recovered to the recovery device 310 through the recovery pipeline.

[0041] In this embodiment, a second normally closed solenoid valve 321 is provided on the recovery pipeline. The second normally closed solenoid valve 321 is located downstream of the recovery device 310 and is used to open or close the recovery pipeline.

[0042] Furthermore, in this embodiment, a first low-pressure check valve is also provided on the recovery pipeline. The first low-pressure check valve is located on the outlet side of the second normally closed solenoid valve 321, that is, between the second normally closed solenoid valve 321 and the fourth manual shut-off valve 640.

[0043] Optionally, the gas path system of the vulcanizing medium also includes a main discharge pipeline and a main discharge device 410. The two ends of the main discharge pipeline are connected to the outlet of the capsule 100 and the main discharge device 410, respectively, and the internal pressure of the capsule 100 can be completely released through the main discharge pipeline and the main discharge device 410.

[0044] Similarly, a third normally closed solenoid valve 421 is provided on the main drain line. The third normally closed solenoid valve 421 is located downstream of the main drain device 410 and is used to open or close the main drain line.

[0045] In this embodiment, a second low-pressure check valve is also provided on the main pipeline. The second low-pressure check valve is located on the outlet side of the third normally closed solenoid valve 421, that is, between the third normally closed solenoid valve 421 and the third manual shut-off valve 630.

[0046] Optionally, the gas path system of the vulcanizing medium also includes a vacuum pipeline and a vacuum device 510. The two ends of the vacuum pipeline are connected to the outlet of the capsule 100 and the vacuum device 510, respectively. The vacuum device 510 can evacuate the capsule 100 through the vacuum pipeline.

[0047] Similarly, a fourth normally closed solenoid valve 521 is provided on the vacuum line. The fourth normally closed solenoid valve 521 is located downstream of the vacuum device 510 and is used to open or close the vacuum line.

[0048] In this embodiment, the gas path system of the vulcanizing medium also includes multiple manual shut-off valves, namely a first manual shut-off valve 610, a second manual shut-off valve 620, a third manual shut-off valve 630, and a fourth manual shut-off valve 640. The first manual shut-off valve 610 is located on the main gas supply pipeline near the outlet of the gas supply device 210; the second manual shut-off valve 620 is located on the vacuum pumping pipeline near the outlet of the vacuum pumping device 510; the third manual shut-off valve 630 is located on the main discharge pipeline near the outlet of the main discharge device 410; and the fourth manual shut-off valve 640 is located on the recovery pipeline near the outlet of the recovery device 310.

[0049] Optionally, the gas path system of the vulcanizing medium also includes a connecting pipeline and a main gas outlet pipeline. The connecting pipeline is sequentially connected to a low-pressure pipeline, a high-pressure pipeline, a vacuum pipeline, a main exhaust pipeline, and a recovery pipeline, and the connection points are respectively located near the outlet of the pneumatic shut-off valve 245, the outlet of the first normally closed solenoid valve 232, the outlet of the second normally closed solenoid valve 321, the outlet of the third normally closed solenoid valve 421, and the outlet of the fourth normally closed solenoid valve 521. One end of the main gas outlet pipeline is connected to the outlet of the capsule 100, and the other end is connected to the connecting pipeline and the vacuum pipeline, so that the heating circulation branch, the vacuum pipeline, the main exhaust pipeline, and the recovery pipeline are integrated into the main gas outlet pipeline and then connected to the outlet of the capsule 100.

[0050] Furthermore, an inlet / outlet connecting valve 246 is also provided on the connecting pipeline, located between the first normally closed solenoid valve 232 and the second normally closed solenoid valve 321. When the third normally closed solenoid valve 421 is energized, the main drain pipeline opens, and all the internal pressure of the capsule 100 is released. The release of the third normally closed solenoid valve 421 is linked with the inlet / outlet connecting valve 246, helping the inlet and outlet chambers of the circulation pump 242 to release pressure together, protecting the pressure balance of the two chambers of the circulation pump 242, and protecting the circulation pump 242.

[0051] The gas path system of the vulcanizing medium also includes a silencer 710 and a silencer pipeline. The two ends of the silencer pipeline are connected to the outlets of the silencer and the connecting pipeline, respectively. A fifth normally closed solenoid valve 721 is installed on the silencer pipeline. The silencer 710 and the silencer pipeline are used for silencing the venting of the capsule exhaust.

[0052] In this embodiment, to further make the gas circuit system more compact, the valves within the green dashed box in the figure are all integrated onto the valve island.

[0053] This embodiment also provides a tire vulcanization system that consumes less energy and has high working efficiency.

[0054] Specifically, the tire vulcanization system includes a vulcanizing machine (not shown in the figure) and a gas path system for the vulcanizing medium. High-pressure and low-pressure pipelines are connected to the bladder 100 via the vulcanizing machine. The gas path system for the vulcanizing medium avoids energy loss, improves the working environment of the vulcanization workshop, prevents condensation in the pipelines, and reduces vacuuming time. Therefore, the tire vulcanization system consumes less energy and has high working efficiency.

[0055] This embodiment also provides a tire vulcanization method that results in low energy consumption and high efficiency in tire vulcanization.

[0056] Specifically, the tire vulcanization method uses an air circuit system with the aforementioned vulcanizing medium to vulcanize the tire, and the tire vulcanization method includes the following steps: S1: Open the gas supply device 210 and open the low-pressure pipeline. The gas medium is depressurized and shaped by the depressurization and shaping component to form a shaped gas that enters the capsule 100.

[0057] Step S1 above also includes the following three steps: S11: The gas medium first passes through the pressure reducing valve 221 and the water separator 222 to reduce pressure and dry, and then passes through the pressure balancing valve 223 (the pressure balancing valve 223 is controlled by an electric ratio valve and outputs a 1:1 pressure). S12: The gas medium passes through the shaping check and pressure relief valve 224, the pneumatic shut-off valve 245 and the heating tank 241 in sequence to reach the capsule 100. During this process, when the pressure at port P of the shaping check and pressure relief valve 224 is greater than the pressure at port A, the gas source flows normally from P to A. When the pressure at port A of the shaping check and pressure relief valve 224 is greater than that at port P, the extra pressure is discharged from port A to port O.

[0058] Because during the mold closing process, the capsule 100 will be squeezed, and the internal pressure will increase. It is necessary to discharge the excess pressure inside the capsule 100 through the O port of the shaping check valve 224.

[0059] S2: Close the low-pressure line and open the high-pressure line. At the same time, the heating tank 241 and the circulation pump 242 work. The gas medium enters the capsule 100 through the pressurization component. After the pressure inside the capsule 100 reaches the set pressure, close the high-pressure line. At this time, the pressure inside the capsule 100 remains at the set value. If the pressure inside the capsule 100 is lower than the set value, open the high-pressure line again to replenish the pressure. Specifically, the low-pressure pipeline is closed by the pneumatic shut-off valve 245, the main pipeline is closed by the second normally closed solenoid valve 321, and the first normally closed solenoid valve 232 is opened. The gas medium slowly enters the capsule 100 through the throttle orifice 231. After the pressure inside the capsule 100 reaches the set pressure, the first normally closed solenoid valve 232 is closed. At this time, the pressure inside the capsule 100 is maintained at the set value. If the pressure inside the capsule 100 is lower than the set value, the first normally closed solenoid valve 232 is opened again to replenish the pressure.

[0060] S3: After the vulcanization process is completed, the circulating pump 242 stops, recovers the gas medium inside the capsule 100, releases all the pressure in the capsule 100, and evacuates the capsule 100 to remove the tire.

[0061] Step S3 above also includes the following steps: S31: Gas medium recovery. After the vulcanization process is completed, stop the circulating pump 242, open the fourth normally closed solenoid valve 521, and recover the gas medium in the capsule 100. S32: Main drain, restore the third normally closed solenoid valve 421, release all the internal pressure of capsule 100, the release of the third normally closed solenoid valve 421 is linked with the inlet and return connecting valve 246, help the circulation pump 242 inlet and return chambers to depressurize together, protect the pressure balance of the two chambers of circulation pump 242, and protect circulation pump 242. S33: Vacuuming, the internal pressure of capsule 100 reaches negative pressure, helping to unload the tire, opening the second normally closed solenoid valve 321, and closing the third normally closed solenoid valve 421. The second normally closed solenoid valve 321 is linked with the inlet and outlet connecting valve 246 to help the circulation pump 242 inlet and outlet chambers release pressure together, protecting the pressure balance of the two chambers of the circulation pump 242, protecting the circulation pump 242, and helping to speed up the vacuuming efficiency. The loop is complete.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gas path system for a vulcanizing medium, characterized in that, include: Capsules (100); A gas supply device (210) capable of providing a gaseous medium; A low-pressure pipeline, the two ends of which are connected to the inlet of the gas supply device (210) and the capsule (100), respectively; A pressure-reducing and shaping assembly is located in the low-pressure pipeline, and the gas medium can be reduced and shaped by the pressure-reducing and shaping assembly to form a shaped gas. A high-pressure pipeline, the two ends of which are respectively connected to the inlet of the gas supply device (210) and the capsule (100); A pressurizing assembly is located in the high-pressure pipeline, and the gas medium can be formed into high-pressure gas by passing through the pressurizing assembly; A heating tank (241) is located in the high-pressure pipeline and between the pressurization assembly and the capsule (100), and the high-pressure gas is capable of being heated in the heating tank (241); A circulation pump (242) is located on the high-pressure pipeline. The outlet of the circulation pump (242) is connected to the heating tank (241), and the outlets of the pressurization assembly and the capsule (100) are respectively connected to the inlet of the circulation pump (242) to form a heating circulation branch for the gas medium.

2. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The pressure reducing and shaping assembly includes a pressure reducing valve (221), a water separator (222), and a pressure balancing valve (223) connected in sequence. The gas medium is depressurized by the pressure reducing valve (221), dried by the water separator (222), and its pressure is balanced by the pressure balancing valve (223).

3. The gas path system for the vulcanizing medium according to claim 2, characterized in that, The pressure reducing and shaping assembly also includes a shaping check valve (224), which is located between the pressure balancing valve (223) and the inlet of the capsule (100). Excess pressure in the capsule (100) can release pressure from the shaping check valve (224).

4. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The pressurization assembly includes a throttling orifice (231) and a first normally closed solenoid valve (232) connected in sequence, and the gas medium is pressurized into the high-pressure gas through the throttling orifice (231).

5. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The heating circulation branch also includes a first switching valve (243) and a second switching valve (244). The first switching valve (243) is located between the circulation pump (242) and the heating tank (241), and the second switching valve (244) is located downstream of the circulation pump (242).

6. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The gas path system of the vulcanizing medium also includes a recovery device (310) and a recovery pipeline. The two ends of the recovery pipeline are respectively connected to the outlet of the capsule (100) and the recovery device (310). The gas medium inside the capsule (100) can be recovered to the recovery device (310) through the recovery pipeline.

7. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The gas path system of the vulcanizing medium also includes a main discharge pipeline and a main discharge device (410). The two ends of the main discharge pipeline are respectively connected to the outlet of the capsule (100) and the main discharge device (410). The internal pressure of the capsule (100) can be completely released through the main discharge pipeline and the main discharge device (410).

8. The gas path system for the vulcanizing medium according to claim 1, characterized in that, The gas path system of the vulcanizing medium also includes a vacuum pipeline and a vacuum device (510). The two ends of the vacuum pipeline are connected to the outlet of the capsule (100) and the vacuum device (510) respectively. The vacuum device (510) can evacuate the capsule (100) through the vacuum pipeline.

9. A tire vulcanization system, characterized in that, The system includes a vulcanizing machine and a gas path system for the vulcanizing medium as described in any one of claims 1-8, wherein the high-pressure pipeline and the low-pressure pipeline are respectively connected to the capsule (100) through the vulcanizing machine.

10. A tire vulcanization method, characterized in that, A tire vulcanizing method using a pneumatic system employing the vulcanizing medium according to any one of claims 1-8, wherein the tire vulcanizing method comprises the following steps: S1: Open the gas supply device (210) and open the low-pressure pipeline. The gas medium is depressurized and shaped by the depressurization and shaping component to form a shaped gas that enters the capsule (100). S2: Close the low-pressure pipeline and open the high-pressure pipeline. At the same time, the heating tank (241) and the circulation pump (242) work. The gas medium enters the capsule (100) through the pressurization component. After the pressure inside the capsule (100) reaches the set pressure, close the high-pressure pipeline. At this time, the pressure inside the capsule (100) remains at the set value. If the pressure inside the capsule (100) is lower than the set value, open the high-pressure pipeline again to replenish the pressure. S3: After the vulcanization process is completed, the circulating pump (242) stops, the gas medium inside the capsule (100) is recovered, the pressure inside the capsule (100) is completely released, and the tire is removed by vacuuming the inside of the capsule (100).

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