Novel vulcanization pipeline for preventing nitrogen from entering steam

Abstract

The utility model relates to a novel vulcanization pipeline for preventing nitrogen from entering steam, and belongs to the field of tire vulcanization equipment. A left capsule, a right capsule, a steam inlet pipeline, an eighth stop valve and a ninth stop valve are connected together through a steam inlet header pipe to form a vulcanizing medium inlet channel, and a steam inlet control pipeline is connected into a nitrogen inlet control pipeline through a two-position three-way stop valve. A first stop valve, a first filter, a throttling hole, a first two-position two-way stop valve and a two-position three-way stop valve are connected in series to form a nitrogen inlet control pipeline, and the nitrogen inlet control pipeline is connected to a steam inlet header pipe to form an inlet path of a vulcanization pipeline; the left capsule, the right capsule, the steam return pipeline, the sixth stop valve and the seventh stop valve are connected together through a steam return header pipe to form a vulcanizing medium return path, and the main exhaust control pipeline, the vacuumizing control pipeline and the steam condensate exhaust control pipeline are connected in parallel and are jointly connected to the steam return header pipe through a pressure retaining valve to form a loop of the vulcanizing pipeline.

Description

Technical Field

[0001] The utility model relates to the field of tire vulcanization, in particular to a novel vulcanization pipeline for preventing nitrogen from entering steam. Background Art

[0002] As we all know, semi-steel vulcanization uses nitrogen-filled vulcanization technology, which can greatly reduce steam consumption, save energy, reduce costs, and protect the environment. However, due to the high nitrogen filling pressure, nitrogen can easily enter the steam main line. The low temperature of nitrogen entering the steam pipeline will cause the steam temperature to be low, which will in turn affect the temperature of the entire system, resulting in batches of defective products, and there are great hidden dangers. The traditional method is to use the steam pipeline and the nitrogen pipeline in parallel, and connect a check valve in series in the steam pipeline. Once nitrogen is connected to the steam pipeline, the check valve will start to prevent nitrogen from entering the steam main line. However, impurities in the pipeline will be blocked at the check valve core, causing the check valve to fail. Although adding filters and increasing the frequency of maintenance can play a certain role, it is still impossible to effectively prevent such problems, and the protection effect is not ideal. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a novel vulcanization pipeline for preventing nitrogen from entering steam, so that nitrogen cannot enter the steam pipeline, thereby playing an automatic protection role.

[0004] The utility model solves the technical problem by adopting the following technical scheme: a novel vulcanization pipeline for preventing nitrogen from entering steam, which is provided with a left capsule and a right capsule, and is characterized in that the left capsule, the right capsule, the steam inlet pipeline, the eighth stop valve and the ninth stop valve are connected together through a steam inlet main pipe to form a vulcanization medium inlet passage, the second two-position two-way cut-off valve, the second filter and the second stop valve are connected in series to form a steam inlet control pipeline, the steam inlet control pipeline is connected to the nitrogen inlet control pipeline through a two-position three-way cut-off valve, the first stop valve, the first filter, the throttle hole, the first two-position two-way cut-off valve and the two-position three-way cut-off valve are connected in series to form a nitrogen inlet control pipeline, and the nitrogen inlet control pipeline is connected to the steam inlet main pipe. The left capsule, the right capsule, the return steam pipeline, the sixth stop valve and the seventh stop valve are connected together through the return steam main pipe to form a return path for the vulcanizing medium. The third two-position two-way cut-off valve, the first one-way valve and the third stop valve are connected in series to form a main exhaust control pipeline. The fourth two-position two-way cut-off valve, the second one-way valve and the fourth stop valve are connected in series to form a vacuum control pipeline. The fifth two-position two-way cut-off valve, the steam trap, the third one-way valve and the fifth stop valve are connected in series to form a steam condensate exhaust control pipeline. The main exhaust control pipeline, the vacuum control pipeline and the steam condensate exhaust control pipeline are connected in parallel and connected to the return steam main pipe through a pressure maintaining valve to form a loop of the vulcanizing pipeline.

[0005] The utility model has the beneficial effects that the pipeline is simple to manufacture and convenient to maintain after manufacture, the problem of nitrogen entering the steam is basically eliminated, and the hidden dangers of the nitrogen-filled vulcanization process are eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0007] Figure 1 A schematic structural diagram of the utility model.

[0008] In the figure, 1. left capsule, 2. steam inlet pipeline, 3. steam return pipeline, 4. steam return main pipe, 5. steam inlet main pipe, 6. steam inlet control pipeline, 7. nitrogen inlet control pipeline, 8. main exhaust control pipeline, 9. vacuum control pipeline, 10. steam condensate exhaust control pipeline, 11. first stop valve, 12. first filter, 13. throttle hole, 14. first two-position two-way cut-off valve, 15. two-position three-way cut-off valve, 16. second two-position two-way cut-off valve, 17. second filter, 18. Second stop valve, 19. Third two-position two-way shut-off valve, 20. First non-return valve, 21. Third stop valve, 22. Fourth two-position two-way shut-off valve, 23. Second non-return valve, 24. Fourth stop valve, 25. Fifth two-position two-way shut-off valve, 26. Steam trap, 27. Third non-return valve, 28. Fifth stop valve, 29. Pressure-maintaining valve, 30. Sixth stop valve, 31. Seventh stop valve, 32. Eighth stop valve, 33. Ninth stop valve, 34. Right capsule. DETAILED DESCRIPTION

[0009] In the figure, the utility model is provided with a left capsule 1, a right capsule 34, a steam inlet pipeline 2, an eighth stop valve 32, and a ninth stop valve 33 connected together through a steam inlet main pipe 5 to form a vulcanizing medium inlet passage, a second two-position two-way cut-off valve 16, a second filter 17, and a second stop valve 18 connected in series to form a steam inlet control pipeline 6, and the steam inlet control pipeline 6 is connected to the nitrogen inlet control pipeline 7 through a two-position three-way cut-off valve 15, a first stop valve 11, a first filter 12, a throttle hole 13, a first two-position two-way cut-off valve 14, and a two-position three-way cut-off valve 15 connected in series to form a nitrogen inlet control pipeline 7, and the nitrogen inlet control pipeline 7 is connected to the steam inlet main pipe 5 to form the inlet of the vulcanizing pipeline; the left capsule 1, the right capsule 34, the return steam pipeline 3, the sixth stop valve 30, and the seventh stop valve 31 are connected together through the return steam main pipe 4 to form a vulcanizing medium return path, the third two-position two-way cut-off valve 19, the first one-way valve 20, and the third stop valve 21 are connected in series to form a main exhaust control pipeline 8, the fourth two-position two-way cut-off valve 22, the second one-way valve 23, and the fourth stop valve 24 are connected in series to form a vacuum control pipeline 9, the fifth two-position two-way cut-off valve 25, the steam trap 26, the third one-way valve 27, and the fifth stop valve 28 are connected in series to form a steam condensate discharge control pipeline 10, the main exhaust control pipeline 8, the vacuum air control pipeline 9, and the steam condensate discharge control pipeline 10 are connected in parallel and connected to the return steam main pipe 4 through the pressure maintaining valve 29 to form a loop of the vulcanization pipeline, and the inlet and return loops of the steam inlet main pipe 5 and the return steam main pipe 4 form a whole through the left capsule 1 and the right capsule 34.

[0010] After the vulcanization steps are completed, the vulcanizer is in place, and the clamping force is applied, the steam inlet control line 6 is opened through the PLC program, and the steam enters the nitrogen inlet control line 7 through the second stop valve 18, the second filter 17, the second two-position two-way shut-off valve 16, and the two-position three-way shut-off valve 15 in sequence, and enters the left capsule 1 and the right capsule 34 through the steam inlet main pipe 5, the eighth stop valve 32, the ninth stop valve 33, and the steam inlet line 2 to achieve heating and vulcanization of the tire. The water generated by the condensation of the steam is discharged into the main collection tank through the steam condensation control line 10 for reuse. After the steam heating time is completed according to the vulcanization step sequence, the nitrogen inlet step is started, the nitrogen inlet control pipeline 7 is opened, and the nitrogen passes through the first stop valve 11, the first filter 12, the throttle hole 13, the first two-position two-way shut-off valve 14, the two-position three-way shut-off valve 15 in turn, through the steam inlet main pipe 5, the eighth stop valve 32, the ninth stop valve 33, and the steam inlet pipeline 2 to enter the left capsule 1 and the right capsule 34. At the same time as the nitrogen is introduced, the pressure holding valve 29 is started to close the entire circuit and perform nitrogen filling and vulcanization. After the nitrogen filling step time is completed according to the sequence, the program opens the main exhaust control pipeline 8 and the vacuum control pipe 9 in turn to exhaust the pressure in the left capsule 1 and the right capsule 34. The vulcanizer opens the mold and takes out the tire to complete a vulcanization process, and the next process is cycled.

[0011] A two-position three-way shut-off valve 15 is connected in series in the nitrogen inlet control pipeline 7, and the steam inlet pipeline is connected to the nitrogen inlet pipeline through the two-position three-way shut-off valve 15. When internal pressure nitrogen is required for vulcanization, the two-position three-way valve 15 is opened through program control to let in nitrogen, and the steam inlet pipeline is automatically blocked through the two-position three-way shut-off valve 15, so that nitrogen cannot flow into the steam pipeline, thereby playing an automatic protection role.

Claims

1. A new type of vulcanization pipeline for preventing nitrogen from entering steam, provided with a left capsule and a right capsule, characterized in that: The left capsule, the right capsule, the steam inlet pipeline, the eighth stop valve and the ninth stop valve are connected together through the steam inlet main pipe to form a vulcanizing medium inlet passage. The second two-position two-way cut-off valve, the second filter and the second stop valve are connected in series to form a steam inlet control pipeline. The steam inlet control pipeline is connected to the nitrogen inlet control pipeline through a two-position three-way cut-off valve. The first stop valve, the first filter, the throttle hole, the first two-position two-way cut-off valve and the two-position three-way cut-off valve are connected in series to form a nitrogen inlet control pipeline. The nitrogen inlet control pipeline is connected to the steam inlet main pipe to form the inlet of the vulcanizing pipeline. The left capsule, the right capsule, the steam return pipeline and the sixth stop valve are connected in series to form a vulcanizing medium inlet passage. The check valve and the seventh stop valve are connected together through the return steam main pipe to form a vulcanization medium return path, the third two-position two-way cut-off valve, the first one-way valve, and the third stop valve are connected in series to form a main exhaust control pipeline, the fourth two-position two-way cut-off valve, the second one-way valve, and the fourth stop valve are connected in series to form a vacuum control pipeline, the fifth two-position two-way cut-off valve, the steam trap, the third one-way valve, and the fifth stop valve are connected in series to form a steam condensate discharge control pipeline, the main exhaust control pipeline, the vacuum control pipeline, and the steam condensate discharge control pipeline are connected in parallel and connected to the return steam main pipe through a pressure maintaining valve to form a loop of the vulcanization pipeline.

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