Tire capsule nitrogen cyclic heating device

Abstract

The utility model discloses a tire bladder nitrogen cyclic heating device which comprises a heating mold, a gas supply module, a nitrogen making module, a circulating pump, an electric heater, a gas inlet pipeline, a return pipeline and a circulating pipeline, the gas supply module is arranged on the heating mold, and the gas inlet pipeline and the return pipeline are respectively communicated with the interior of the heating mold through the gas supply module. The nitrogen making module is arranged at one end of the gas inlet pipeline, the circulating pump is arranged on the gas inlet pipeline, the electric heater is arranged on the gas inlet pipeline and located between the circulating pump and the gas inlet end of the gas supply module, and the circulating pipeline is connected between the gas inlet pipeline and the backflow pipeline. Nitrogen is heated through the electric heater, circulation of the nitrogen in the vulcanizing process is kept through the circulating pump, the stability of the pressure of the nitrogen in the cavity of the capsule is further kept through the pressure transmitter and the flow adjusting module, meanwhile, the nozzle form in the vulcanizing machine is improved, the tire vulcanizing efficiency is improved, and the temperature difference between the upper portion and the lower portion of the capsule is reduced. And the qualified rate of products is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tire vulcanization, especially relates to a tire capsule nitrogen circulation heating device. BACKGROUND

[0002] Tire vulcanization needs to be heated inside and outside at the same time when hot processing, external heating, namely heating mold usually adopts steam to heat, internal heating is to heat the capsule by using vulcanization medium, and the medium needs to reach a certain pressure.

[0003] The commonly used vulcanization medium currently includes saturated steam, superheated water and steam / nitrogen mixed gas, and the above vulcanization medium has respective disadvantages, for example, saturated steam as the vulcanization medium can cause uneven heating in the inner cavity and low pressure; superheated water as the vulcanization medium can cause low vulcanization efficiency; and steam / nitrogen mixed gas as the vulcanization medium can cause a large temperature difference between the upper and lower capsules.

[0004] In order to further improve the existing tire vulcanization process, the application provides a circulation heating system using pure nitrogen as the vulcanization medium to vulcanize the green tire, so as to improve the tire vulcanization efficiency. UTILITY MODEL CONTENTS

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a tire capsule nitrogen circulation heating device, including heating mold, gas supply module, nitrogen making module, circulating pump, electric heater, intake pipeline, backflow pipeline and circulation pipeline, the gas supply module sets up in heating mold, the intake pipeline and backflow pipeline respectively through gas supply module and heating mold inside intercommunication, the nitrogen making module sets up at one end of intake pipeline, the circulating pump sets up on the intake pipeline, the electric heater sets up on the intake pipeline and is located between the circulating pump and the gas inlet end of gas supply module, the circulation pipeline is connected between the intake pipeline and backflow pipeline.

[0006] Further, the position between the circulating pump and the electric heater on the intake pipeline is provided with a flow regulating module composed of a first flow sensor, a first flow transmitter, a first flow indicator, a first flow control valve and a gate valve.

[0007] Further, the gas inlet end of the electric heater on the intake pipeline is provided with a first temperature sensor and a first temperature indicator.

[0008] Further, the gas outlet end of the electric heater on the intake pipeline is provided with a temperature regulating module composed of a second temperature sensor, a second temperature indicator and a temperature difference controller.

[0009] Further, the intake pipeline between the nitrogen making module and the circulating pump is provided with a check valve.

[0010] Further, a first pressure transmitter is arranged on the air inlet pipeline between the circulating pump and the flow regulating module.

[0011] Further, an exhaust tank is arranged at one end of the return pipeline, and an exhaust valve is arranged on the return pipeline between the air outlet end of the air supply module and the exhaust tank.

[0012] Further, a second pressure transmitter is arranged on the return pipeline between the air outlet end of the air supply module and the exhaust valve.

[0013] Further, the air supply module comprises a connecting seat and a nozzle, the connecting seat is provided with an air inlet groove and a return groove on both sides and connected with the nozzle, the air inlet groove is connected with the air inlet pipeline, and the return groove is connected with the return pipeline.

[0014] Further, the bottom of the nozzle is provided with an incomplete annular groove, a plurality of nozzles are arranged in the incomplete annular groove at intervals, the incomplete annular groove is communicated with the air inlet groove, and the opposite side of the incomplete annular groove is communicated with the return groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The nitrogen is heated by the electric heater, the circulation of the nitrogen is maintained in the vulcanization process by the circulating pump, the nitrogen pressure in the capsule cavity is further stabilized by the pressure transmitter and the flow regulating module, the nozzle form in the vulcanizing machine is improved, the tire vulcanization efficiency is improved, the temperature difference of the capsule is reduced, and the qualified rate of products is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0018] Figure 1 It is the system principle diagram of the utility model;

[0019] Figure 2 It is Figure 1 It is the local structure enlarged view of A in the utility model;

[0020] Figure 3 It is the bottom structure schematic view of the nozzle in the utility model.

[0021] Reference signs:

[0022] 1-Heating mold, 2-Gas supply module, 3-Nitrogen generator module, 4-Circulation pump, 5-Electric heater, 6-Inlet pipe, 7-Return pipe, 8-Circulation pipe, 9-Tail gas tank, 10-First flow sensor, 11-First flow transmitter, 12-First flow indicator, 13-First flow control valve, 14-Gate valve, 15-First temperature sensor, 16-First temperature indicator, 17-Second temperature sensor, 18-Second temperature indicator, 19-Differential temperature controller, 20-Exhaust valve, 21-Check valve, 22-First pressure transmitter, 23-Second pressure transmitter, 24-Connecting seat, 25-Nozzle, 26-Inlet groove, 27-Return groove, 28-Non-complete annular groove, 29-Nozzle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0026] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1 As shown, the nitrogen circulation heating device for tire bladders in this embodiment includes a heating mold 1, a gas supply module 2, a nitrogen generation module 3, a circulation pump 4, an electric heater 5, an air inlet pipe 6, a return pipe 7, a circulation pipe 8, and an exhaust gas tank 9. The gas supply module 2 is installed on the heating mold 1, and the air inlet pipe 6 and the return pipe 7 are respectively connected to the interior of the heating mold 1 through the gas supply module 2.

[0028] The heating mold 1 adopts the existing technology in the field. The tire is placed in the heating cavity inside the heating mold 1. During vulcanization, the outer wall of the heating mold 1 heats the outer tire, and nitrogen gas heats the inside of the bladder.

[0029] The nitrogen generator module 3 is located at one end of the air inlet pipe 6, the circulation pump 4 is located on the air inlet pipe 6, and the electric heater 5 is located on the air inlet pipe 6 and between the air inlet end of the circulation pump 4 and the air supply module 2.

[0030] A flow regulation module consisting of a first flow sensor 10, a first flow transmitter 11, a first flow indicator 12, a first flow control valve 13, and a gate valve 14 is provided on the intake pipe 6 between the circulating pump 4 and the electric heater 5. This module is used to regulate and control the intake flow of nitrogen.

[0031] The intake pipe 6 is equipped with a first temperature sensor 15 and a first temperature indicator 16 at the intake end of the electric heater 5 to monitor the temperature of nitrogen gas before heating in real time. The intake pipe 6 is equipped with a temperature regulation module consisting of a second temperature sensor 17, a second temperature indicator 18, and a temperature difference controller 19 at the outlet end of the electric heater 5 to monitor and regulate the temperature of nitrogen gas after heating. By monitoring the temperature at the intake and outlet ends of the electric heater 5, the temperature difference between nitrogen gas entering and exiting the heating mold 1 is controlled to keep the temperature difference within a small range, thereby ensuring that the capsule can be heated sufficiently and uniformly, thus improving the tire vulcanization efficiency and tire vulcanization quality.

[0032] A circulation pipeline 8 connects the inlet pipeline 6 and the return pipeline 7 to achieve nitrogen recycling. One end of the circulation pipeline 8 is equipped with a tail gas tank 9. An exhaust valve 20 is located on the return pipeline 7 between the outlet of the gas supply module 2 and the tail gas tank 9. A one-way valve 21 is installed on the inlet pipeline between the nitrogen generation module 3 and the circulation pump 4. When the one-way valve 21 is open and the exhaust valve 20 is closed, nitrogen circulates between the inlet pipeline 6, the return pipeline 7, and the circulation pipeline 8. When the one-way valve 21 is closed and the exhaust valve 20 is open, nitrogen flows into the tail gas tank 9 for recovery.

[0033] A first pressure transmitter 22 is installed on the air inlet pipe 6 between the circulating pump 4 and the flow regulation module, and a second pressure transmitter 23 is installed on the return pipe 7 at the position between the air outlet of the air supply module 2 and the exhaust valve 20.

[0034] Combination Figure 2 As shown, the air supply module 2 includes a connecting seat 24 and a nozzle 25. The connecting seat 24 has an air inlet groove 26 and a return groove 27 on both sides, which are connected to the nozzle 25. The air inlet groove 26 is connected to the air inlet pipe 6, and the return groove 27 is connected to the return pipe 7.

[0035] Combination Figure 3As shown, the bottom of the nozzle 25 is provided with a non-complete annular groove 28, a plurality of nozzles 29 are arranged in the non-complete annular groove 28 at intervals, the non-complete annular groove 28 is communicated with the air inlet groove 26, and the opposite side of the non-complete annular groove 28 is communicated with the backflow groove 27. Among them, the nozzles 29 are arranged towards the obliquely upward direction, and the inclination angle with the horizontal direction is 10-20°, and the separation angle between every two nozzles 29 along the non-complete annular groove 28 is 40-50°.

[0036] The nitrogen enters the non-complete annular groove 28 through the air inlet pipeline 6 and the air inlet groove 26, and is sprayed out through the plurality of nozzles 29, and the used nitrogen enters the backflow pipeline 7 through the backflow groove 27, and is recycled or recycled.

[0037] It should be noted that the various valves, instruments and the like used in the present application are conventional components in the art, and the structure, principle and purpose thereof are easily known by those skilled in the art, and will not be described here.

[0038] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

Claims

1. A tire bladder nitrogen circulation heating apparatus, characterized by: The device comprises a heating mold, a gas supply module, a nitrogen production module, a circulating pump, an electric heater, an air inlet pipeline, an air return pipeline and a circulation pipeline.

2. The tire bladder nitrogen circulation heating apparatus of claim 1, wherein: A flow regulating module composed of a first flow sensor, a first flow transmitter, a first flow indicator, a first flow control valve and a gate valve is arranged on the air inlet pipeline between the circulating pump and the electric heater.

3. The tire bladder nitrogen circulation heating apparatus of claim 1, wherein: A first temperature sensor and a first temperature indicator are arranged on the air inlet pipeline at the air inlet end of the electric heater.

4. The tire bladder nitrogen circulation heating apparatus of claim 3, wherein: A temperature regulating module composed of a second temperature sensor, a second temperature indicator and a temperature difference controller is arranged on the air inlet pipeline at the air outlet end of the electric heater.

5. The tire bladder nitrogen circulation heating apparatus of claim 1, wherein: A one-way valve is arranged on the air inlet pipeline between the nitrogen production module and the circulating pump.

6. The tire bladder nitrogen circulation heating apparatus of claim 2, wherein: A first pressure transmitter is arranged on the air inlet pipeline between the circulating pump and the flow regulating module.

7. The tire bladder nitrogen circulation heating apparatus of claim 1, wherein: An exhaust gas tank is arranged at one end of the air return pipeline, and an exhaust valve is arranged on the air return pipeline between the air outlet end of the gas supply module and the exhaust gas tank.

8. The tire bladder nitrogen circulation heating apparatus of claim 7, wherein: A second pressure transmitter is arranged on the air return pipeline between the air outlet end of the gas supply module and the exhaust valve.

9. The tire bladder nitrogen circulation heating apparatus of claim 1, wherein: The gas supply module comprises a connecting seat and a nozzle, and the connecting seat is provided with an air inlet groove and an air return groove on both sides and connected with the nozzle, the air inlet groove is connected with the air inlet pipeline, and the air return groove is connected with the air return pipeline.

10. The tire bladder nitrogen circulation heating apparatus of claim 9, wherein: The bottom of the nozzle is provided with an incomplete annular groove, a plurality of nozzles are arranged in the incomplete annular groove at intervals, the incomplete annular groove is communicated with the air inlet groove, and the opposite side of the incomplete annular groove is communicated with the air return groove.

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