CN217531968U - Self-circulation nitrogen heating system of vulcanizing machine - Google Patents
Self-circulation nitrogen heating system of vulcanizing machine Download PDFInfo
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- CN217531968U CN217531968U CN202221046533.XU CN202221046533U CN217531968U CN 217531968 U CN217531968 U CN 217531968U CN 202221046533 U CN202221046533 U CN 202221046533U CN 217531968 U CN217531968 U CN 217531968U
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Abstract
The utility model discloses a self-circulation nitrogen heating system of a vulcanizing machine, which comprises an air supply pipeline, wherein the air supply pipeline is connected with a low-pressure air inlet device and a high-pressure air inlet device; the gas supply pipeline is sequentially provided with a radiator, a gas circulating pump and a low-temperature gas heater; be connected with the total circulation pipeline and the circulation pipeline of preheating that parallelly connected set up between the end of air supply line and the head end, be equipped with the circulation valve of preheating on the circulation pipeline of preheating, be connected with the design air vent pipeline, high temperature air vent pipeline and the low temperature air vent pipeline of parallelly connected setting between the head end of total circulation pipeline and the end of air supply line, be equipped with design cut-off valve group on the design air vent pipeline, be equipped with high temperature trip valve and high temperature gas heater on the high temperature air vent pipeline, be equipped with the low temperature trip valve on the low temperature air vent pipeline, the end of total circulation pipeline is equipped with the total circulation trip valve. The utility model discloses can realize better temperature and pressure control, it is extravagant to reduce the energy, does benefit to and improves vulcanization quality.
Description
Technical Field
The utility model relates to a capsule vulcanizer technical field especially relates to a vulcanizer self-loopa nitrogen gas heating system.
Background
The capsule vulcanizing machine adopts a mould pressing method to manufacture the tire, the inside of the capsule is heated by a heating medium in the vulcanizing process, and the outer mould is heated by electric heating. In a traditional capsule vulcanizing machine, high-temperature steam heated by a boiler is adopted in a capsule to heat. In the whole capsule vulcanization process, different pressure and temperature of the heating medium are required to be adjusted in different time periods, and the pressure, particularly the temperature control of high-temperature steam is difficult to adapt to the adjustment, so that only the initial capsule preheating and temperature rising are carried out by adopting the steam, and the self-circulation heating is carried out by using the electrically heated nitrogen during normal capsule vulcanization operation. However, the following problems still exist in this heating method. First, a boiler is usually used with a plurality of vulcanizing machines, and even if only one vulcanizing machine is used for production, the boiler must be started, so that the energy consumption of the boiler is serious. Secondly, the temperature of the electrically heated nitrogen is seriously reduced after heat exchange, the temperature control of the electrically heated nitrogen is difficult to adapt to temperature regulation in different time periods, and even the temperature required by vulcanization in the bladder can not be achieved all the time, so that the final tire vulcanization quality is defective. Thirdly, the steam and the nitrogen pass through a capsule vulcanizing machine and adopt the same pipeline, and in the vulcanizing production process, liquid water generated by the steam is inevitably mixed into the nitrogen, so that the nitrogen is impure, and the heating temperature and the pressure of the nitrogen during independent heating are difficult to control.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a vulcanizer self-loopa nitrogen gas heating system that can realize better temperature and pressure control, it is extravagant to reduce the energy, does benefit to the improvement vulcanization quality is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the self-circulation nitrogen heating system of the vulcanizing machine comprises an air supply pipeline, wherein the air supply pipeline is connected with a low-pressure air inlet device and a high-pressure air inlet device; the gas supply pipeline is sequentially provided with a radiator, a gas circulating pump and a low-temperature gas heater; a main circulating pipeline and a preheating circulating pipeline which are arranged in parallel are connected between the tail end and the head end of the air supply pipeline, and the main circulating pipeline is connected with a capsule of a vulcanizing machine; the utility model discloses a set up the valve, including preheating circulation pipeline, total circulation pipeline, air supply pipeline, design vent line, high temperature vent line and the low temperature vent line that is equipped with preheating circulation valve on the preheating circulation pipeline, total circulation pipeline's head end with be connected with parallelly connected setting vent line, high temperature vent line and the low temperature vent line that sets up between the end of air supply pipeline, be equipped with the design valve block that cuts off on the design vent line, be equipped with high temperature trip valve and high temperature gas heater on the high temperature vent line, be equipped with the low temperature trip valve on the low temperature vent line, total circulation pipeline's end is equipped with total circulation trip valve.
As a preferable technical scheme, a nitrogen recovery pipeline is arranged on the main circulation pipeline between the main circulation stop valve and the capsule, and a nitrogen recovery valve is arranged on the nitrogen recovery pipeline.
As a preferred technical scheme, a nitrogen exhaust pipeline is arranged on the main circulating pipeline between the main circulating cut-off valve and the capsule, and a capsule exhaust valve is arranged on the nitrogen exhaust pipeline.
As a preferable technical scheme, a vacuum pumping pipeline is arranged on the main circulation pipeline between the main circulation cut-off valve and the capsule, and a vacuum valve is arranged on the vacuum pumping pipeline.
As a preferable technical scheme, a vulcanization temperature sensor is arranged on the main circulating pipeline before air is fed into the capsule.
As a preferable technical scheme, a return air temperature sensor is arranged between the air supply pipeline and the main circulation pipeline and between the air supply pipeline and the preheating circulation pipeline.
According to the preferable technical scheme, the low-pressure air inlet device comprises a low-pressure nitrogen inlet pipeline connected with the air supply pipeline, and a low-pressure nitrogen inlet valve and a low-pressure nitrogen filter valve are arranged on the low-pressure nitrogen inlet pipeline.
As an optimized technical scheme, the high-pressure air inlet device comprises a high-pressure nitrogen inlet pipeline connected with the air supply pipeline, and a high-pressure nitrogen inlet valve and a high-pressure nitrogen filter valve are arranged on the high-pressure nitrogen inlet pipeline.
Since the technical scheme is used, the utility model discloses following beneficial effect is obtained:
(1) The pressure of nitrogen is adjusted at different time intervals of vulcanization by selectively inputting low-pressure nitrogen and high-pressure nitrogen into the pipeline, so that better pressure control is realized;
(2) Before air is supplied into the capsule, the air supply pipeline and the closed loop pipeline of the preheating circulation pipeline are heated in a circulating manner, so that heat loss can be reduced, and higher preheating rate is ensured;
(3) Two-stage heating is adopted in the positive vulcanization stage, the nitrogen temperature raising effect is good, the high temperature required by vulcanization is more easily formed, and the first-stage heating utilizes a low-temperature gas heater which is used for preheating nitrogen originally, so that the effects of simplifying the design of a system pipeline and improving the temperature controllability can be achieved at the same time;
(4) High-pressure nitrogen is used for low-temperature heating in the over-vulcanization stage and is matched with a radiator for heat dissipation, so that the bladder gradually gets rid of a high-temperature environment, the scorching phenomenon of the tire in the over-vulcanization stage can be reduced, the quality of the tire is ensured, the energy consumption can be reduced, and the energy conservation is realized.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic diagram of an embodiment of the present invention.
In the figure: 1-a gas supply line; 11-a low pressure air intake; 12-a high pressure air intake; 13-a heat sink; 14-gas circulation pump; 15-a low temperature gas heater; 2-total circulation line; 21-nitrogen recovery line; 22-nitrogen recovery valve; 23-nitrogen gas exhaust line; 24-capsule venting valve; 25-vacuum pumping pipeline; 26-a vacuum valve; 27-a vulcanization temperature sensor; 28-return air temperature sensor; 29-total circulation shut-off valve; 3-shaping the ventilation pipeline; 31-shaping a cut-off valve group; 32-a front shaping cut-off valve; 33-shaping pressure stabilizing valve; 34-cutting off the valve after shaping; 4-high temperature ventilation pipeline; 41-high temperature shut-off valve; 42-high temperature gas heater; 5-a low temperature vent line; 51-low temperature shut-off valve; 6-preheating a circulating pipeline; 61-preheat circulation valve; 7-capsule preparation; 8-a centering mechanism; 81-central ventilation line.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments may be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive on the scope of the claims.
As shown in FIG. 1, the self-circulation nitrogen heating system of the vulcanizing machine comprises an air supply pipeline 1, wherein the air supply pipeline 1 is connected with a low-pressure air inlet device 11 and a high-pressure air inlet device 12. The low-pressure air inlet device 11 is used for supplying low-pressure nitrogen to the air supply pipeline 1, and the high-pressure air inlet device 12 is used for supplying high-pressure nitrogen to the air supply pipeline 1. According to the embodiment, the nitrogen pressure is adjusted at different periods of vulcanization through selective input of low-pressure nitrogen and high-pressure nitrogen, so that better pressure control is realized.
This embodiment low pressure air inlet unit 11 include with the low pressure nitrogen gas inlet line that air supply line 1 is connected, be equipped with low pressure nitrogen gas admission valve and low pressure nitrogen gas strainer valve on the low pressure nitrogen gas inlet line. The high-pressure air inlet device 12 comprises a high-pressure nitrogen inlet pipeline connected with the air supply pipeline 1, and a high-pressure nitrogen inlet valve and a high-pressure nitrogen filter valve are arranged on the high-pressure nitrogen inlet pipeline.
The gas supply pipeline 1 is provided with a radiator 13, a gas circulating pump 14 and a low-temperature gas heater 15 in sequence, and the sequential arrangement is understood to be the sequential arrangement according to the flowing direction of nitrogen. In this embodiment, the heat sink 13 generally refers to a heat dissipation box structure having a heat dissipation pipeline through which nitrogen gas can pass, and which can dissipate heat through air cooling or water cooling, and when air cooling or water cooling is not performed, the heat dissipation of the heat dissipation pipeline is limited. The gas circulation pump 14 is used for providing nitrogen self-circulation power, and the structural principle thereof is well known by those skilled in the art, and will not be described in detail herein. The low temperature gas heater 15 is used to heat the nitrogen gas to a low temperature, which is typically an electric coil heating structure.
The tail end and the head end of the air supply pipeline 1 are connected with a main circulating pipeline 2 and a preheating circulating pipeline 6 which are arranged in parallel, and the main circulating pipeline 2 is connected with a capsule 7 of a vulcanizing machine. Thus, the air supply pipeline 1, the preheating circulation pipeline 6 and the main circulation pipeline 2 can form a closed-loop circulation pipeline of nitrogen respectively. The preheating circulation pipeline 6 is provided with a preheating circulation valve 61, and when the preheating circulation valve 61 is opened, nitrogen can form closed-loop circulation between the air supply pipeline 1 and the preheating circulation pipeline 6. Wherein, the head end and the end of the pipeline involved in this embodiment both use the end when nitrogen gas enters this pipeline as the head end, and use the end when nitrogen gas goes out this pipeline as the end.
The head end of total circulation pipeline 2 with be connected with design air vent pipeline 3, high temperature air vent pipeline 4 and the low temperature air vent pipeline 5 of parallelly connected setting between the end of air supply pipeline 1, be equipped with design cut-off valve group 31 on the design air vent pipeline 3, be equipped with high temperature trip valve 41 and high temperature gas heater 42 on the high temperature air vent pipeline 4, be equipped with low temperature trip valve 51 on the low temperature air vent pipeline 5, the end of total circulation pipeline 2 is equipped with total circulation trip valve 29. Three parallel pipelines are arranged between the main circulation pipeline 2 and the air supply pipeline 1, and nitrogen can be selected to enter the capsule 7 through which pipeline according to the pressure and temperature requirements of nitrogen at different vulcanization time periods. This embodiment thus allows for a flexible control of the temperature and pressure at the capsule 7 by means of a relatively simple piping design. The sizing cut-off valve group 31 comprises a sizing front cut-off valve 32, a sizing pressure stabilizing valve 33 and a sizing rear cut-off valve 34 which are sequentially arranged.
Preferably, a nitrogen recovery pipeline 21 is arranged on the main circulation pipeline 2 between the main circulation shut-off valve 29 and the capsule 7, and a nitrogen recovery valve 22 is arranged on the nitrogen recovery pipeline 21. When the vulcanization is finished, the nitrogen recovery valve 22 can be opened to recover part of nitrogen in the pipeline, so that the waste of nitrogen resources is reduced.
Preferably, a nitrogen exhaust pipeline 23 is arranged on the main circulation pipeline 2 and between the main circulation cut-off valve 29 and the capsule 7, and a capsule exhaust valve 24 is arranged on the nitrogen exhaust pipeline 23. At the end of the vulcanization operation, the capsule 7 is filled with nitrogen and can be vented by opening the capsule vent valve 24.
Preferably, a vacuum-pumping pipeline 25 is arranged on the main circulation pipeline 2 between the main circulation cut-off valve 29 and the capsule 7, and a vacuum valve 26 is arranged on the vacuum-pumping pipeline 25. In the case of a vulcanizer, the bladder 7 is usually provided with a central mechanism 8 for use. After vulcanization, the bladder 7 needs to be exhausted, elongated and contracted, and the central mechanism 8 needs to be synchronously extended in the process so as to facilitate the subsequent taking out of the vulcanized tire and the placement of the next green tire. The vacuum valve 26 is provided in this embodiment, so that nitrogen in the capsule 7 can be forcibly exhausted by using a vacuum pumping manner, thereby facilitating smooth elongation. Of course, the central mechanism 8 of the present embodiment is also connected with a central ventilation pipeline 81, so that the central mechanism 8 can be matched with the capsule 7 to stretch or shape by air intake and exhaust.
Preferably, a vulcanization temperature sensor 27 is arranged on the main circulation pipeline 2 before the air enters the capsule 7, so that the temperature of the nitrogen entering the capsule 7 can be detected in real time, and the normal temperature requirement of the vulcanization operation at the capsule 7 can be ensured. Air supply line 1 with total circulating line 2 preheat and be equipped with return air temperature sensor 28 between the circulating line 6 to the process the temperature of nitrogen gas behind capsule 7 carries out real-time detection, in order to conveniently carry out regulation such as circulation speed, heat radiation intensity, perhaps heating strength to its temperature condition.
The heating method of the self-circulation nitrogen heating system of the vulcanizing machine comprises the following steps.
The method comprises the following steps: the low-pressure air inlet device 11 supplies low-pressure nitrogen to the air supply pipeline 1, the preheating circulating valve 61 is opened, the low-temperature gas heater 15 and the gas circulating pump 14 work, and the radiator 13 does not work; low-pressure nitrogen gas circulates between the gas supply line 1 and the preheating circulation line 6 and is gradually preheated to a cryogenic temperature. Nitrogen gas is in air supply line 1 with preheat the closed loop pipeline inner loop heating of circulating line 6, reducible heat scatters and disappears, guarantees higher preheating rate, and this closed loop pipeline simple structure, and one quick-witted one is joined in marriage easily, therefore the vulcanizer preheats the stage and can abandon the use of boiler steam, and does not receive the vulcanizer to set up the influence of several for the energy obtains more reasonable utilization, and it is extravagant to reduce the energy.
Step two: closing the preheating circulating valve 61, opening the sizing cut-off valve group 31 and the total circulating cut-off valve 29, keeping the low-temperature gas heater 15 and the gas circulating pump 14 working, and keeping the radiator 13 not working; and introducing low-pressure low-temperature nitrogen into the capsule 7 to perform pre-shaping on the capsule 7. This step corresponds to the preheating stage of vulcanization. For the design shut-off valve set 31 of the present embodiment, which employs the design front shut-off valve 32, the design pressure stabilizing valve 33 and the design rear shut-off valve 34, the nitrogen gas entering the capsule 7 can be supplied under a stable pressure, thereby ensuring smooth pre-design.
Step three: closing the shaping cut-off valve set 31, opening the high-temperature cut-off valve 41, operating the high-temperature gas heater 42, keeping the low-temperature gas heater 15 and the gas circulating pump 14 in operation, and keeping the radiator 13 in non-operation; low pressure low temperature nitrogen gas process during high temperature vent line 4, receive form low pressure high temperature nitrogen gas after high temperature gas heater 42 promotes the temperature once more, low pressure high temperature nitrogen gas gets into capsule 7 and carries out vulcanization operation heat supply, and nitrogen gas is in air supply line 1 high temperature vent line 4 with carry out the self-loopa between the total circulation pipeline 2, keep capsule 7 department vulcanization operation's high temperature. This step is the positive cure stage of the curing process. The embodiment adopts two-stage heating, the nitrogen heating effect is good, the high temperature required by vulcanization is easier to form, and the high-temperature nitrogen forms self-circulation in the closed-loop pipeline, so that the heat loss can be reduced; and the first-stage heating utilizes the low-temperature gas heater 15 which preheats nitrogen originally, so that the effects of simplifying the design of a system pipeline and improving the temperature controllability can be achieved at the same time.
Step four: closing the high temperature cut-off valve 41, stopping the high temperature gas heater 42, opening the low temperature cut-off valve 51, supplying high pressure nitrogen gas to the gas supply pipeline 1 by the high pressure gas inlet device 12, keeping the low temperature gas heater 15 and the gas circulation pump 14 working, and starting the radiator 13; the high-pressure nitrogen is heated by the low-temperature gas heater 15 to form high-pressure low-temperature nitrogen, the high-pressure low-temperature nitrogen enters the capsule 7 for cooling and shape keeping, the high-pressure nitrogen passing through the capsule 7 is firstly cooled by the radiator 13, and then is heated to the low-temperature by the low-temperature gas heater 15 to be circulated again; the temperature at capsule 7 is gradually reduced and eventually maintained at the cryogenic temperature level of nitrogen.
The step is equivalent to an over-vulcanization stage of tire vulcanization, and the bladder 7 can gradually get rid of a high-temperature environment under the condition of ensuring the vulcanization temperature, so that the scorching phenomenon of the tire in the over-vulcanization stage is reduced, the tire quality is ensured, the energy consumption is reduced, and the energy conservation is realized. And in the step, high-pressure nitrogen replaces low-pressure nitrogen, so that the capsule 7 can be free from high-temperature environment, and meanwhile, pressure loss is avoided, and the tire shaping quality is also favorably ensured.
Step five: and stopping the low-temperature gas heater 15, the gas circulating pump 14 and the radiator 13, and carrying out discharge treatment on the nitrogen in the gas supply pipeline 1, the total circulating pipeline 2 and the low-temperature ventilation pipeline 5. Preferably, the method of efflux treatment in this step comprises high pressure nitrogen recovery and residual nitrogen venting. For the embodiment provided with the nitrogen recovery valve 22 and the capsule exhaust valve 24, the nitrogen recovery valve 22 is opened first, and the high-pressure nitrogen is partially recovered; then the nitrogen recovery valve 22 is closed, the capsule exhaust valve 24 is opened, and the nitrogen which cannot be recovered and utilized in the pipeline is directly discharged.
Further, for the present embodiment provided with the vacuum valve 26, the present embodiment further includes the step six: the vacuum valve 26 is opened and the capsule 7 is evacuated. At the same time, of course, the central ventilation line 81 supplies compressed air to elongate and contract the capsule 7 in cooperation with the evacuation of the capsule 7.
This embodiment can be in the cooperation of vulcanizer each stage of vulcanization with ideal pressure and temperature through reasonable pipeline design and valve body control, does benefit to and guarantees the vulcanization quality, and every stage all adopts nitrogen gas self-loopa mode operation for the energy obtains rational utilization, and the energy is extravagant obviously to be reduced, and efficiency obviously improves.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Vulcanizer self-loopa nitrogen gas heating system, its characterized in that: the air supply pipeline is connected with a low-pressure air inlet device and a high-pressure air inlet device; the gas supply pipeline is sequentially provided with a radiator, a gas circulating pump and a low-temperature gas heater; a main circulating pipeline and a preheating circulating pipeline which are arranged in parallel are connected between the tail end and the head end of the air supply pipeline, and the main circulating pipeline is connected with a capsule of a vulcanizing machine; the utility model discloses a set up the valve, including preheating circulation pipeline, total circulation pipeline, air supply pipeline, design vent line, high temperature vent line and the low temperature vent line that is equipped with preheating circulation valve on the preheating circulation pipeline, total circulation pipeline's head end with be connected with parallelly connected setting vent line, high temperature vent line and the low temperature vent line that sets up between the end of air supply pipeline, be equipped with the design valve block that cuts off on the design vent line, be equipped with high temperature trip valve and high temperature gas heater on the high temperature vent line, be equipped with the low temperature trip valve on the low temperature vent line, total circulation pipeline's end is equipped with total circulation trip valve.
2. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: and a nitrogen recovery pipeline is arranged on the main circulation pipeline between the main circulation cut-off valve and the capsule, and a nitrogen recovery valve is arranged on the nitrogen recovery pipeline.
3. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: the total circulation pipeline is located be equipped with nitrogen gas exhaust pipe between total circulation trip valve and the capsule, be equipped with capsule discharge valve on the nitrogen gas exhaust pipe.
4. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: and a vacuumizing pipeline is arranged on the main circulating pipeline between the main circulating cut-off valve and the capsule, and a vacuum valve is arranged on the vacuumizing pipeline.
5. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: and a vulcanization temperature sensor is arranged on the main circulating pipeline before the air is introduced into the capsule.
6. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: and an air return temperature sensor is arranged between the air supply pipeline and the main circulating pipeline as well as between the air supply pipeline and the preheating circulating pipeline.
7. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: the low-pressure air inlet device comprises a low-pressure nitrogen inlet pipeline connected with the air supply pipeline, and a low-pressure nitrogen inlet valve and a low-pressure nitrogen filter valve are arranged on the low-pressure nitrogen inlet pipeline.
8. The vulcanizer self-circulating nitrogen gas heating system of claim 1, wherein: the high-pressure air inlet device comprises a high-pressure nitrogen inlet pipeline connected with the air supply pipeline, and a high-pressure nitrogen inlet valve and a high-pressure nitrogen filter valve are arranged on the high-pressure nitrogen inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221046533.XU CN217531968U (en) | 2022-04-29 | 2022-04-29 | Self-circulation nitrogen heating system of vulcanizing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221046533.XU CN217531968U (en) | 2022-04-29 | 2022-04-29 | Self-circulation nitrogen heating system of vulcanizing machine |
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| Publication Number | Publication Date |
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| CN217531968U true CN217531968U (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221046533.XU Active CN217531968U (en) | 2022-04-29 | 2022-04-29 | Self-circulation nitrogen heating system of vulcanizing machine |
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| CN (1) | CN217531968U (en) |
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- 2022-04-29 CN CN202221046533.XU patent/CN217531968U/en active Active
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