A device for regulating the multi-stage gradual increase of the internal pressure of a hot water process tire vulcanizer

Abstract

The utility model relates to a multi-stage gradual increase regulating device for the internal pressure of a hot water process tire vulcanizer, and belongs to the field of tire vulcanization. A capsule is provided, and a steam inlet automatic control valve and a hot water inlet automatic control valve are arranged on the capsule inlet pipeline, an internal pressure regulating valve is arranged on the collecting pipeline of the rear branches of the steam inlet automatic control valve and the hot water inlet automatic control valve, and a hot water return automatic control valve is arranged on the capsule outlet pipeline. The utility model avoids the influence of the primary hot water charging process on the power system by controlling the gradual increase of the internal pressure, and is beneficial to the quality of the tire; at the same time, since primary water is no longer used, the power system investment and operation and maintenance costs can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of tire vulcanization, in particular to a device for regulating the multi-stage gentle increase of the internal pressure of a hot water process tire vulcanizer. Background Art

[0002] As we all know, hot water vulcanization technology is currently used for engineering vehicle tires and giant tires. Since the capsules filled with hot water in engineering vehicle tire and giant tire vulcanizers are generally large in volume, in order to avoid the process of filling hot water into the capsules affecting the pressure of the hot water main, thereby causing internal pressure fluctuations in other vulcanizers, these vulcanizers generally use a primary hot water automatic control valve to initially fill the capsules from the primary hot water main, so an independent primary hot water supply system is required, and due to the correlation of the power system, the primary hot water filling process still has a certain impact on the overall hot water supply system. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a device for regulating the multi-stage gradual increase of the internal pressure of a hot water process tire vulcanizer, which is beneficial to improving the quality of tires.

[0004] The utility model adopts the technical scheme to solve the technical problem: a multi-stage gradual increase regulating device for the internal pressure of a hot water process tire vulcanizer, which is provided with a capsule and is characterized in that a steam inlet automatic control valve and a hot water inlet automatic control valve are arranged on the capsule inlet pipeline, an internal pressure regulating valve is arranged on the collecting pipeline of the rear branches of the steam inlet automatic control valve and the hot water inlet automatic control valve, and a hot water return automatic control valve is arranged on the capsule outlet pipeline.

[0005] The beneficial effect of the utility model is that, by controlling the slow rise of the internal pressure, the influence of the hot water charging process on the power system is avoided and the tire quality is improved; at the same time, since primary water is no longer used, the power system investment and operation and maintenance costs can be reduced. 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] Figure 2 Schematic diagram of the internal pressure curve of this embodiment

[0009] Figure 3 Schematic diagram of the internal pressure curve of the prior art

[0010] In the figure, 1. capsule, 2. internal pressure regulating valve, 3. steam inlet automatic control valve, 4. hot water inlet automatic control valve, 5. hot water return automatic control valve. DETAILED DESCRIPTION

[0011] In the figure, the utility model is provided with a bladder 1 of a tire vulcanizer, a steam inlet automatic control valve 3 and a hot water inlet automatic control valve 4 are arranged in the inlet pipeline thereof, an internal pressure regulating valve 2 is arranged in the collecting pipeline of the rear branches of the steam inlet automatic control valve 3 and the hot water inlet automatic control valve 4, and a hot water return automatic control valve 5 is arranged in the outlet pipeline of the bladder 1.

[0012] Each time the green tire is loaded and vulcanization begins, the preset steps are executed: the first step is the steam stage, the steam inlet automatic control valve 3 is opened to fill the capsule 1 with steam and maintained for a certain time according to the process setting. During this period, the control target value of the internal pressure regulating valve 2 is set to the pressure of the steam source pipeline. According to the preset PID parameters, the internal pressure is gently increased to the pressure of the steam source pipeline, which is about 0.8MPa; the second step is the hot water filling stage, the steam inlet automatic control valve 3 is closed, and the hot water inlet automatic control valve 4 is opened to fill the capsule 1 with hot water. At the same time, the control target value of the internal pressure regulating valve 2 is changed to the second highest value. This embodiment adopts 2.2M Pa, and according to the preset PID parameters, the internal pressure is gently increased to the target value of this stage until the second step process setting time ends; in the third step of normal hot water circulation, the hot water inlet automatic control valve 4 is kept open, the hot water return automatic control valve 5 is opened, and the control target value of the internal pressure regulating valve 2 is changed to the highest value, which is 2.8MPa in this embodiment, and according to the preset PID parameters, the internal pressure is gently increased to the target value of this stage, and then, the control mode of the internal pressure regulating valve 2 is changed from pressure control to opening control, and the opening degree is set to 100%, and this state is maintained until the third step process time ends.

[0013] The internal pressure setting values ​​of the first to third steps can also be divided into more sections according to the process experiment conditions.

[0014] The internal pressure curve of this embodiment is as follows Figure 2 , the comparative internal pressure curve without using the present invention is as follows Figure 3 In the figure, the horizontal axis is the time axis, the vertical axis is the pressure axis, the a period is the first steam stage, and the b period is Figure 2 The second step is the hot water filling stage. Figure 3 The middle is the primary water period, and the period after period b is the third step of normal hot water circulation. By comparing the two pressure curves, it can be seen that the primary water pressure of the embodiment not using the present invention rises faster, especially after the capsule 1 is filled, it almost instantly rises to a value higher than the maximum value of the embodiment, while the internal pressure of the embodiment rises gently in multiple stages.

Claims

1. A device for regulating the internal pressure of a hot water process tire vulcanizer to increase gradually in multiple stages, provided with a capsule, characterized in that: A steam inlet automatic control valve and a hot water inlet automatic control valve are arranged on the capsule inlet pipeline, an internal pressure regulating valve is arranged on the collecting pipeline of the rear branches of the steam inlet automatic control valve and the hot water inlet automatic control valve, and a hot water return automatic control valve is arranged on the capsule outlet pipeline.

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