Nitrogen recovery device with independent control function

Abstract

The utility model discloses a nitrogen recovery device with an independent control function, and relates to the field of tire vulcanization detection.The nitrogen recovery device comprises a first nitrogen storage tank and a second nitrogen storage tank which are arranged side by side, each of the first nitrogen storage tank and the second nitrogen storage tank is provided with a pressure regulation and control assembly, and the first nitrogen storage tank and the second nitrogen storage tank communicate with a gas supply pipeline of a vulcanization capsule; any one of the first nitrogen storage tank and the second nitrogen storage tank provides nitrogen for the vulcanization capsule, the other one provides nitrogen recovery for the vulcanization capsule, gas inlet pipes of the first nitrogen storage tank and the second nitrogen storage tank are connected to a gas return pipeline of the vulcanization capsule in parallel, gas outlet pipes of the first nitrogen storage tank and the second nitrogen storage tank are connected to a gas inlet pipeline of the vulcanization capsule in parallel, and each pipeline is additionally provided with a valve body structure for pipeline switching; the system has the technical advantages that the vulcanizing capsule always uses the same nitrogen through the pressure regulation and control assembly and the first nitrogen storage tank and the second nitrogen storage tank which are arranged in parallel, the temperature of the nitrogen cannot be lost, the temperature of the inner capsule of the vulcanizing machine can be just supplemented, and real energy conservation and consumption reduction can be achieved without configuring a large nitrogen making unit.

Description

TECHNICAL FIELD

[0001] The application relates to the field of tire vulcanization detection, in particular to a nitrogen recovery device with independent control function. BACKGROUND

[0002] The tire vulcanization equipment, also known as tire vulcanization machine, is usually composed of clamping mechanism, control system, pressure system and heating system. The tire vulcanization equipment, also known as tire vulcanization machine, is a key equipment in tire manufacturing industry, which is mainly used for converting raw rubber into cooked rubber through specific pressure and temperature conditions to realize the final molding of tire. The equipment is usually composed of clamping mechanism, control system, pressure system, heating system and vulcanization capsule. The vulcanization capsule, as the inner mold of tire mold, needs to be filled with compressed gas, nitrogen or hot water medium in the capsule during the tire vulcanization process, so as to support the tire rubber blank and form the internal pressure vulcanized tire. The clamping mechanism is generally composed of frame and bolts to ensure the stability of the upper and lower molds and the vulcanization capsule during the vulcanization process. The control system is composed of electric control box and wire, which is used to realize the functions of timing lock, automatic pressure compensation, accurate temperature control, automatic timing and alarm at the time. The pressure system is composed of water pressure plate and pressure test pump, which provides stable pressure required for vulcanization. The heating system is composed of heating plate and heat insulation plate to ensure accurate temperature control during vulcanization.

[0003] In the current tire vulcanization process, the tire vulcanization equipment relies on the air compressor to provide the necessary compressed air for the nitrogen supply system. However, once the tire vulcanization process is completed, the equipment will directly release the used nitrogen to the atmosphere. This practice not only leads to the unnecessary waste of valuable nitrogen resources, but also poses a challenge to environmental sustainability. Therefore, how to efficiently recover and reuse this part of nitrogen has become a technical problem to be solved in the field of tire manufacturing. SUMMARY

[0004] The device provides a nitrogen recovery device with independent control function, and the specific implementation manner is as follows:

[0005] A nitrogen recovery device with independent control function, comprising:

[0006] The first nitrogen storage tank and the second nitrogen storage tank are arranged in parallel, and both are provided with a pressure regulating component. The first nitrogen storage tank and the second nitrogen storage tank are connected to the gas supply pipeline of the vulcanization capsule. Either one of them provides nitrogen for the vulcanization capsule, and the other one provides nitrogen recovery for the vulcanization capsule.

[0007] The gas inlet pipes of the first and second nitrogen storage tanks are connected in parallel to the gas return pipe of the vulcanization capsule, the gas outlet pipes of the two are connected in parallel to the gas inlet pipe of the vulcanization capsule, and each pipe is additionally provided with a valve structure for pipe switching, and the recycling and circulation in the vulcanization capsule are realized through the alternating supply of the first and second nitrogen storage tanks.

[0008] Based on the above technical scheme, through the pressure regulating assembly combined with the parallel first and second nitrogen storage tank systems, the required nitrogen for the vulcanization capsule in the production process can be effectively retained and stored after each use. Not only is the utilization efficiency of nitrogen optimized, but also a solid guarantee is provided for the recycling of subsequent vulcanization capsules. It can intelligently manage the supply and recovery of nitrogen, maximize the utilization of nitrogen resources, reduce resource waste, and improve overall production efficiency and sustainability.

[0009] Preferably, the pressure regulating assembly includes a mechanical push rod, the output end of which is connected to the piston slidingly arranged in the first or second nitrogen storage tank.

[0010] Based on the above technical scheme, the mechanical push rod system uses a lead screw structure as its core driving component, which can control and push the piston inside the nitrogen storage tank to move reciprocally and stably, thereby flexibly adjusting the pressure state inside the nitrogen storage tank to meet the nitrogen demand of the vulcanization capsule at different production stages. When the vulcanization capsule needs to be injected with nitrogen, the mechanical push rod drives the piston to move forward to release the stored nitrogen in the single nitrogen storage tank. When the vulcanization capsule has completed the use of nitrogen and needs to retain the remaining nitrogen for subsequent recycling, the mechanical push rod reverses the operation to drive the piston to retreat, thereby achieving effective recovery and storage of nitrogen in the other nitrogen storage tank. This not only ensures stable and reliable nitrogen supply during the production process of the vulcanization capsule, but also greatly improves the utilization efficiency of nitrogen and the sustainability of production.

[0011] Preferably, a gas supplementing pipe with a gas supplementing valve is further included, and the gas supply areas of the first and second nitrogen storage tanks are connected to the gas supplementing pipe after being additionally provided with gas supply valves.

[0012] Preferably, a pressure sensor for detecting the nitrogen pressure is additionally provided on the gas inlet pipe.

[0013] Based on the above technical scheme, the nitrogen pressure on the gas inlet pipe is continuously and real-time monitored by the pressure sensor, which can accurately grasp the dynamic changes of the nitrogen supply system. Once the nitrogen pressure is detected to be below the preset safety threshold, the system will automatically trigger the gas supplementing pipe to safely and stably supplement the nitrogen in the external nitrogen source into the nitrogen storage tank, thereby ensuring that the nitrogen in the nitrogen storage tank always remains at a reasonable pressure level that meets the use requirements, greatly reducing the frequency of manual intervention and making the entire nitrogen supplementing process more efficient and convenient.

[0014] Preferably, the end of the return gas pipeline is connected with a drain valve, and the end of the drain valve is communicated with an external drain outlet.

[0015] Based on the above technical scheme, by setting the drain valve, regular and effective cleaning operation of the water mixed and condensed in the return gas pipeline can be realized; the drain valve can be internally provided with upper and lower liquid level sensors, which can accurately identify the degree of water accumulation in the pipeline, and once the preset cleaning condition is reached, the accumulated water can be automatically discharged, thereby ensuring the smoothness of the return gas pipeline and the purity and stability of the gas flow.

[0016] Preferably, a first switching valve is connected in series on the gas inlet pipe, and a second switching valve is connected in series on the gas outlet pipe.

[0017] Preferably, the gas supply area of the first nitrogen storage tank and the second nitrogen storage tank is additionally provided with an exhaust valve.

[0018] Based on the above technical scheme, the exhaust valve realizes convenient replacement of nitrogen and effective pressure relief function when the system pressure abnormally rises; the exhaust valve can stably operate under various complex working conditions, and its unique structure design makes the nitrogen replacement process simple and fast, greatly improving the work efficiency; at the same time, when the internal pressure of the system exceeds the preset safety range, the exhaust valve can respond quickly and automatically open to safely release the excess pressure, thereby effectively preventing equipment damage or safety accidents caused by excessive pressure, and ensuring the stable operation of the nitrogen supply system and personnel safety.

[0019] Preferably, the controller is further provided, and a signal input end of the controller is electrically connected with the pressure sensor, and a signal output end of the controller is electrically connected with each valve body and the pressure regulating component.

[0020] Based on the above technical scheme, by setting the automatic controller, the automatic operation and management of the nitrogen recovery device are realized; the controller can monitor the key parameters in the nitrogen recovery process in real time, such as the nitrogen concentration, flow and pressure, and automatically adjust the operation state of the device according to the preset program and conditions, to ensure the efficiency, stability and continuity of the nitrogen recovery process; at the same time, it can also automatically select the working state of the two nitrogen storage tanks according to the concentration of nitrogen, to ensure that the quality of the recovered nitrogen meets the use requirements.

[0021] In summary, the present application has the following beneficial technical effects:

[0022] 1. The utility model discloses a pressure regulating component and sets parallel first nitrogen storage tank and second nitrogen storage tank, make sulfurization capsule always use same nitrogen, and the temperature of nitrogen also can not be consumed, just can make up the temperature of the capsule in the vulcanizing machine, need not configure large -scale nitrogen -making unit and can reach the energy -conserving and consumption -reducing of true just;

[0023] 2. The mechanical push rod in the utility model usually adopts a lead screw structure, and reciprocating movement of a piston in a nitrogen storage tank is pushed to realize pressure adjustment in the nitrogen storage tank, and then injection of nitrogen required by a vulcanization capsule and retention after extraction are realized;

[0024] 3. The utility model has simple structure, and nitrogen pressure on the air inlet pipe is detected in real time through a pressure sensor, and then nitrogen loss in the nitrogen storage tank can be supplemented in time by using a gas supplement pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of a vulcanization device in the utility model;

[0026] Figure 2 is a structural schematic view of a gas supply for a double-table vulcanization device in the utility model;

[0027] Figure 3 is a structural schematic view of a gas supply for a single-table vulcanization device in the utility model;

[0028] Figure 4 is a structural schematic view of a first nitrogen storage tank in the utility model Figure 3 in a gas supply state;

[0029] Figure 5 is a structural schematic view of a second nitrogen storage tank in the utility model Figure 3 in a gas supply state;

[0030] Figure 6 is a running state schematic view of a vulcanization device in the utility model.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1, first nitrogen storage tank, 2, second nitrogen storage tank, 3, air inlet pipeline, 4, air return pipeline, 5, gas supplement pipeline, 6, pressure control assembly, 7, exhaust valve, 8, drain valve, 9, gas supply valve, 10, upper mold, 11, vulcanization capsule, 12, lower mold, 13, pressure sensor,

[0033] 101, air inlet pipe, 102, first switch valve, 103, air outlet pipe, 104, second switch valve, 501, gas supplement valve, 601, piston, 602, mechanical push rod. DETAILED DESCRIPTION

[0034] The specific implementation of the utility model will be described below in combination with the drawings and examples:

[0035] It should be noted that the structure, proportion, size and the like shown in the drawings of the present application are only used to understand and read the content disclosed in the present application by those skilled in the art, and are not used to limit the implementation of the present application. Any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the function and purpose of the present application, should still fall within the scope of the present application.

[0036] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present application are only for the convenience of understanding and reading, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content is also considered as the implementation of the present application.

[0037] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0038] The present application discloses a nitrogen recovery device with independent control function.

[0039] Embodiment 1

[0040] Referring to Figures 1-6 , the present embodiment discloses a nitrogen recovery device with independent control function, comprising a first nitrogen storage tank 1 and a second nitrogen storage tank 2 arranged in parallel, both of which are additionally provided with a pressure regulating component 6. The first nitrogen storage tank 1 and the second nitrogen storage tank 2 are both connected to the gas supply pipeline of the vulcanization capsule 11. Either one of them provides nitrogen gas for a single vulcanization capsule 11, and the other provides nitrogen recovery for the vulcanization capsule 11. The gas inlet pipe 101 of the first nitrogen storage tank 1 and the second nitrogen storage tank 2 is connected in parallel to the gas return pipeline 4 of the vulcanization capsule 11, and the gas outlet pipe 103 of the two is connected in parallel to the gas inlet pipeline 3 of the vulcanization capsule 11. Each pipeline is additionally provided with a valve structure for pipeline switching. The recovery and circulation in the vulcanization capsule 11 are realized by the alternating supply of the first nitrogen storage tank 1 and the second nitrogen storage tank 2. The pressure regulating component 6 in the structure includes a mechanical push rod 602, the output end of which is connected to the piston 601 slidingly arranged in the first nitrogen storage tank 1 or the second nitrogen storage tank 2.

[0041] Referring to Figures 1-3 , the end of the gas return pipeline 4 is connected with a drain valve 8, the end of which is communicated with an external drain outlet. The first switching valve 102 is connected in series on the gas inlet pipe 101, and the second switching valve 104 is connected in series on the gas outlet pipe 103. The gas supply area of the first nitrogen storage tank 1 and the second nitrogen storage tank 2 is additionally provided with an exhaust valve 7.

[0042] The specific implementation process is as follows: in normal operation, the first nitrogen storage tank 1 is filled with nitrogen gas at a certain pressure, and then the second nitrogen storage tank 2 is in a negative pressure state; the first nitrogen storage tank 1 adjusts the internal nitrogen pressure through the pressure regulating assembly 6, and injects the process required pressure into the vulcanization capsule 11 by opening the second switch valve 104 of the first nitrogen storage tank 1; when it is necessary to discharge nitrogen, the first switch valve 102 of the second nitrogen storage tank 2 is opened to discharge nitrogen into the second nitrogen storage tank 2;

[0043] The second nitrogen storage tank 2 is always in a negative pressure state controlled by the pressure regulating assembly 6, and when the entire vulcanization is completed, all the gas in the first nitrogen storage tank 1 is pressed into the second nitrogen storage tank 2, and the positions of the two tanks are interchanged; the second nitrogen storage tank 2 is used as a pressure tank, and the first nitrogen storage tank 1 is used as a negative pressure tank, so that the total amount of nitrogen gas basically does not change, and the same nitrogen gas is always used, and the temperature of the nitrogen gas does not decrease, which can compensate for the temperature of the capsule in the vulcanizing machine.

[0044] Embodiment 2

[0045] With reference to Figures 1-3 Based on embodiment 1, the nitrogen gas recovery device with independent control function is also disclosed, further comprising a controller and a gas supplementing pipeline 5 connected with a gas supplementing valve 501, the gas supply areas of the first nitrogen storage tank 1 and the second nitrogen storage tank 2 are connected to the gas supplementing pipeline 5 after being provided with a gas supply valve 9, and a pressure sensor 13 for detecting the pressure of nitrogen gas is provided on the gas inlet pipe 101; in the structure, the signal input end of the controller is electrically connected to the pressure sensor 13, and the signal output end is electrically connected to each valve body and the pressure regulating assembly 6; when the feedback nitrogen gas is insufficient, the two storage tanks are supplemented with nitrogen gas from the standby nitrogen storage tank through the gas supplementing pipeline 5; because the theoretical loss is very low, only a small gas tank is needed to supplement the pressure, so a large nitrogen gas generating unit is not needed, and the energy saving and consumption reduction are achieved.

[0046] Embodiment 3

[0047] With reference to Figure 1 and Figure 2 Based on the above embodiment, the nitrogen gas recovery device with independent control function is also disclosed, the vulcanization capsule 11 is provided with two parts, the two gas return pipelines 4 are connected in parallel and merged into one, and the two gas inlet pipelines 3 are also connected in parallel and merged into one; in the structure, the two vulcanization capsules 11 are simultaneously realized for nitrogen gas recovery through the gas return pipeline 4 and the gas inlet pipeline 3, and the maximum utilization rate of recovery is realized.

[0048] Many other changes and modifications can be made without departing from the spirit and scope of the present application. It should be understood that the present application is not limited to the specific embodiments, and the scope of the present application is defined by the appended claims.

Claims

1. A nitrogen recovery device with independent control function, characterized in that, The application relates to a nitrogen storage device. The first nitrogen storage tank (1) and the second nitrogen storage tank (2) are arranged in parallel and are provided with pressure regulating components (6); the first nitrogen storage tank (1) and the second nitrogen storage tank (2) are connected to the gas supply pipeline of a vulcanization capsule (11), and any one of the first nitrogen storage tank (1) and the second nitrogen storage tank (2) provides nitrogen for the vulcanization capsule (11), and the other one provides nitrogen recovery for the vulcanization capsule (11). The gas inlet pipes (101) of the first nitrogen storage tank (1) and the second nitrogen storage tank (2) are connected in parallel to the gas return pipeline (4) of the vulcanization capsule (11), the gas outlet pipes (103) of the first nitrogen storage tank (1) and the second nitrogen storage tank (2) are connected in parallel to the gas inlet pipeline (3) of the vulcanization capsule (11), and each pipeline is provided with a valve structure for pipeline switching; the recovery and circulation in the vulcanization capsule (11) are realized through the alternate supply of nitrogen by the first nitrogen storage tank (1) and the second nitrogen storage tank (2).

2. The nitrogen gas recovery device with independent control function according to claim 1, characterized in that, The pressure regulating component (6) comprises a mechanical push rod (602), and the output end of the mechanical push rod (602) is connected to a piston (601) arranged in the first nitrogen storage tank (1) or the second nitrogen storage tank (2).

3. The nitrogen gas recovery device with independent control function according to claim 2, characterized in that, The first nitrogen storage tank (1) and the second nitrogen storage tank (2) are connected to the air supplement pipeline (5) provided with an air supplement valve (501) after being provided with air supply valves (9).

4. The nitrogen gas recovery device with independent control function according to claim 3, characterized in that, A pressure sensor (13) for detecting the pressure of nitrogen is arranged on the gas inlet pipe (101).

5. The nitrogen gas recovery device with independent control function according to claim 4, characterized in that, The gas return pipeline (4) is provided with a hydrophobic valve (8) at the tail end, and the tail end of the hydrophobic valve (8) is communicated with an external drain outlet.

6. The nitrogen gas recovery device with independent control function according to claim 1, characterized in that, A first switching valve (102) is connected in series on the gas inlet pipe (101), and a second switching valve (104) is connected in series on the gas outlet pipe (103).

7. The nitrogen gas recovery device with independent control function according to claim 1, characterized in that, The air supply areas of the first nitrogen storage tank (1) and the second nitrogen storage tank (2) are provided with air exhaust valves (7).

8. The nitrogen gas recovery device with independent control function according to claim 4, characterized in that, A controller is further arranged, the signal input end of the controller is electrically connected to the pressure sensor (13), and the signal output end of the controller is electrically connected to each valve and the pressure regulating component (6).

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