Overpressure emergency anti-mixing protection device

Abstract

The utility model relates to the technical field of rubber tire production, in particular to an overpressure emergency anti-mixing protection device which is reasonable in structure, reliable in work and capable of avoiding mixing of carbon black of different specifications. The overpressure emergency anti-mixing protection device is provided with a PLC (programmable logic controller) and a carbon black daily storage hopper pressure detection component, and the PLC is connected with the carbon black daily storage hopper pressure detection component. The carbon black day storage hopper pressure detection assembly comprises more than two pressure transmitters which are respectively arranged in one-to-one correspondence with more than two carbon black day storage hoppers, and further comprises pressure relief pipelines which are connected with pressure relief valves on the tops of the carbon black day storage hoppers, and the pressure relief pipelines on the adjacent carbon black day storage hoppers are communicated. Compared with the prior art, the pressure relief device has the remarkable advantages that the structure is reasonable, the reliability is high, the product quality can be improved, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber tire production, in particular to an overpressure emergency anti-mixing protection device with reasonable structure and reliable operation, which can avoid the mixing of carbon blacks of different specifications. Background Art

[0002] During the production process of rubber tire products, it is necessary to accurately control the types of carbon black used. This is because the rubber compounds of each rubber tire rubber component are different, and the types of carbon black used are also different. The types of carbon black used during rubber compound production must ensure consistency with the formula, otherwise it will directly affect the internal quality of rubber tire products.

[0003] At present, each internal mixer for producing masterbatch rubber normally has 6 carbon black daily storage hoppers. Each carbon black daily storage hopper is equipped with a low-level, high-level, overpressure alarm switch and an overpressure relief and discharge device. The top of the daily storage hopper adopts a mechanical pressure relief method, and the pressure is relieved to the adjacent daily storage hopper through a one-way conduction connecting pipe of a check valve. Although the overpressure risk is avoided, there is a quality risk of different carbon blacks being mixed. This is because the daily storage hoppers are currently stored outdoors, and the sensitivity of the overpressure alarm switch is unstable due to environmental factors, and sometimes the pressure in the carbon black tank cannot be detected. When the pressure in the daily storage hopper reaches the pressure upper limit of the check valve, the carbon black will enter the pressure relief pipeline, and then further enter the adjacent carbon black daily storage hopper through the pressure relief pipeline, resulting in the mixing of carbon blacks of different specifications. Summary of the Invention

[0004] Aiming at the disadvantages and deficiencies existing in the prior art, in order to effectively ensure the reliability of carbon black specifications and eliminate the risk of mixing of different varieties of carbon black, the utility model provides an overpressure emergency anti-mixing protection device with reasonable structure and reliable operation, which can avoid the mixing of carbon blacks of different specifications.

[0005] The utility model is achieved by the following measures:

[0006] An overpressure emergency anti-mixing protection device is provided with a PLC controller and a carbon black daily storage hopper pressure detection component. The PLC controller is connected to the carbon black daily storage hopper pressure detection component. The carbon black daily storage hopper pressure detection component includes two or more pressure transmitters respectively corresponding to two or more carbon black daily storage hoppers. It also includes a pressure relief pipeline connected to the pressure relief valve at the top of the carbon black daily storage hopper, and the pressure relief pipelines on adjacent carbon black daily storage hoppers are connected and communicated. Its characteristic lies in that a switch-type sensor is also provided in the pressure relief pipeline, and the switch-type sensor is connected to the PLC controller.

[0007] In the utility model, a switch-type sensor is respectively arranged in the pressure relief pipelines at the tops of two or more daily carbon black storage hoppers. The switch-type sensor adopts a proximity switch and is used to detect different specifications of carbon black materials leaked into the pressure relief pipelines due to overpressure relief in the storage hoppers.

[0008] In the utility model, a pressure relief branch is respectively arranged in the pressure relief pipeline at the top of each daily carbon black storage hopper. The pressure relief branch is communicated with the pressure relief pipeline, and a valve is arranged at the connection between the pressure relief branch and the pressure relief pipeline. The valve is used to switch the connection state between the pressure relief pipeline of the current daily carbon black storage hopper and the pressure relief pipelines and pressure relief branches of adjacent daily carbon black storage hoppers. Specifically, when there is no carbon black leaking out in the current pressure relief pipeline, the valve is used to close the pressure relief branch and connect the current pressure relief pipeline and the pressure relief pipelines of adjacent daily carbon black storage hoppers. When there is carbon black leaking out in the current pressure relief pipeline, the pressure relief pipeline of the currently overpressured daily carbon black storage hopper is communicated with the pressure relief branch, and the connection state with the pressure relief pipeline of the adjacent daily carbon black storage hopper is disconnected. The pressure relief branch, the current pressure relief pipeline, and the adjacent pressure relief pipeline are connected in a T shape. The valve body is located at the center of the connection of the three and is in a T shape. The valve core has a conduction channel in an L shape and connects two pipelines each time it rotates in the valve body.

[0009] The utility model is also provided with a display panel and an alarm component connected to the PLC controller. The display panel can be used to display the data collected by the pressure transmitters in each current daily carbon black storage hopper and the working states of each current switch-type sensor. The alarm component includes an audible and visual alarm. Further, a wireless communication circuit connected to the PLC controller is arranged in the alarm component. The wireless communication circuit is implemented by a Bluetooth module and is used to transmit early warning information to an external upper computer or a mobile terminal to prompt the operator to quickly intervene in abnormal working conditions.

[0010] When the utility model is working, the pressure data of each daily carbon black storage hopper is monitored in real time through the pressure detection component of the daily carbon black storage hopper. When the pressure value exceeds the threshold data pre-written in the PLC controller, the alarm component is started in time to alarm the current abnormal working condition. During this process, the mechanical pressure relief valve at the top of the daily carbon black storage hopper will relieve pressure due to overpressure. At this time, if there is carbon black entering the pressure relief pipeline due to the pressure relief action, the switch-type sensor in the pressure relief pipeline obtains the carbon black leakage information in time and uploads the information to the PLC controller. The PLC controller further outputs the carbon black leakage alarm information through the alarm component and the wireless communication module to prompt the operator to relieve pressure in time by opening the valve on the corresponding pressure relief branch, so as to avoid the currently overpressured daily carbon black storage hopper from malfunctioning due to overpressure.

[0011] Compared with the prior art, the utility model further monitors the abnormal working conditions (carbon black leakage) during the overpressure relief process and gives corresponding alarms on the premise of real-time monitoring of the pressure of the carbon black daily storage hopper and automatically detecting and alarming when overpressure abnormality occurs. It has the remarkable advantages of reasonable structure, high reliability, and being conducive to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The Figure 1 is a schematic structural diagram of the utility model.

[0013] The Figure 2 is a block diagram of the electrical principle of the utility model.

[0014] The Figure 3 is a schematic structural diagram of the valve in the utility model.

[0015] Reference numerals: PLC controller 1, carbon black daily storage hopper 2, pressure transmitter 3, pressure relief pipeline 4, switch-type sensor 5, pressure relief branch 6, valve 7, valve body 8, valve core 9, display panel 10, alarm component 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the utility model with reference to the drawings and embodiments.

[0017] As shown in the Figure 1 drawing, an overpressure emergency anti-cross-mixing and protection device is provided with a PLC controller 1 and a carbon black daily storage hopper pressure detection component. The PLC controller 1 is connected to the carbon black daily storage hopper pressure detection component. The carbon black daily storage hopper pressure detection component includes two or more pressure transmitters 3 respectively corresponding to two or more carbon black daily storage hoppers 2, and further includes a pressure relief pipeline 4 connected to the pressure relief valve at the top of the carbon black daily storage hopper 2. The pressure relief pipelines 4 on adjacent carbon black daily storage hoppers 2 are connected and communicated, and a switch-type sensor 5 is also provided in the pressure relief pipeline 4. The switch-type sensor 5 is connected to the PLC controller 1.

[0018] In the utility model, switch-type sensors 5 are respectively provided in the pressure relief pipelines 4 at the tops of two or more carbon black daily storage hoppers 2. The switch-type sensors 5 adopt proximity switches and are used to detect different specifications of carbon black materials leaked into the pressure relief pipeline due to overpressure relief in the storage hopper.

[0019] At the top of each carbon black daily storage hopper 2 of the present utility model, a pressure relief pipeline 4 is respectively provided with a pressure relief branch 6. The pressure relief branch 6 is communicated with the pressure relief pipeline. A valve 7 is provided at the connection of the pressure relief branch 6 and the pressure relief pipeline 4. The valve 7 is used to switch the connection state between the current pressure relief pipeline 4 of the carbon black daily storage hopper and the pressure relief pipelines 4 and pressure relief branches 6 of adjacent carbon black daily storage hoppers. Specifically, when there is no carbon black discharged from the current pressure relief pipeline 4, the valve 7 is used to close the pressure relief branch 6 and connect the current pressure relief pipeline 4 and the pressure relief pipelines 4 of adjacent carbon black daily storage hoppers. When there is carbon black discharged from the current pressure relief pipeline, the pressure relief pipeline 4 of the currently over-pressurized carbon black daily storage hopper is communicated with the pressure relief branch 6, and the connection state with the pressure relief pipelines of adjacent carbon black daily storage hoppers is disconnected. The pressure relief branch 6, the current pressure relief pipeline, and the adjacent pressure relief pipeline are connected in a T shape. The valve body 8 is located at the center of the connection of the three and is in a T shape. The valve core 9 has a conduction channel in an L shape, and when rotating in the valve body, two pipelines are connected each time.

[0020] The present utility model is also provided with a display panel 10 and an alarm component 11 connected to the PLC controller 1. The display panel 10 can be used to display the data collected by the pressure transmitters in each current carbon black daily storage hopper and the working states of each current switch-type sensor. The alarm component 11 includes a sound and light alarm. Further, a wireless communication circuit connected to the PLC controller is provided in the alarm component. The wireless communication circuit is implemented by a Bluetooth module and is used to transmit early warning information to an external upper computer or a mobile terminal to prompt the operator to quickly intervene in abnormal working conditions.

[0021] When the present utility model is working, the pressure data of each carbon black daily storage hopper is monitored in real time through the carbon black daily storage hopper pressure detection component. When the pressure value exceeds the threshold data pre-written in the PLC controller, the alarm component is started in time to alarm the current abnormal working condition. During this process, the mechanical pressure relief valve located at the top of the carbon black daily storage hopper will relieve pressure due to overpressure. At this time, if there is carbon black entering the pressure relief pipeline due to the pressure relief action, the switch-type sensor located in the pressure relief pipeline obtains the carbon black discharge information in time and uploads the information to the PLC controller. The PLC controller further outputs carbon black discharge alarm information through the alarm component and the wireless communication module to prompt the operator to relieve pressure in time by opening the valve on the corresponding pressure relief branch to avoid the currently over-pressurized carbon black daily storage hopper from malfunctioning due to overpressure.

[0022] The beneficial effects of the present utility model are as follows: By adding an overpressure emergency detection device (proximity switch) in parallel with the automatic control circuit of the overpressure protection device, double detection of the overpressure of the carbon black daily storage hopper is realized, avoiding potential safety and quality hazards caused by insufficient sensitivity of one detection method, and ensuring the inherent quality of rubber tire products from the source.

Claims

1. An overpressure emergency anti-mixing protection device, provided with a PLC controller and a carbon black daily storage hopper pressure detection component, the PLC controller is connected to the carbon black daily storage hopper pressure detection component, the carbon black daily storage hopper pressure detection component includes two or more pressure transmitters respectively arranged in one-to-one correspondence with two or more carbon black daily storage hoppers, and also includes a pressure relief pipeline connected to the pressure relief valve on the top of the carbon black daily storage hopper, and the pressure relief pipelines on adjacent carbon black daily storage hoppers are connected, characterized in that: A switch type sensor is also provided in the pressure relief pipeline, and the switch type sensor is connected to the PLC controller.

2. The overpressure emergency anti-mixing protection device according to claim 1 is characterized in that: A switch type sensor is respectively provided in the pressure relief pipeline at the top of the more than two carbon black daily storage hoppers. The switch type sensor adopts a proximity switch and is used to detect carbon black materials of different specifications that leak into the pressure relief pipeline due to overpressure relief in the storage hopper.

3. The overpressure emergency anti-mixing protection device according to claim 1 is characterized in that: The pressure relief pipeline at the top of each carbon black daily storage hopper is respectively provided with a pressure relief branch, which is connected to the pressure relief pipeline. A valve is provided at the connection between the pressure relief branch and the pressure relief pipeline, and the valve is used to switch the connection status between the pressure relief pipeline of the current carbon black daily storage hopper and the pressure relief pipeline and pressure relief branch of the adjacent carbon black daily storage hopper.

4. The overpressure emergency anti-mixing protection device according to claim 3 is characterized in that: The pressure relief branch, the current pressure relief pipeline and the adjacent pressure relief pipeline are connected in a T shape. The valve body is located in the center where the three are connected and is T-shaped. The valve core has an L-shaped conducting channel. When it rotates in the valve body, two pipelines are connected each time.

5. The overpressure emergency anti-mixing protection device according to claim 1 is characterized in that: A display panel and an alarm component connected to the PLC controller are also provided. The display panel can be used to display the data collected by the pressure transmitter in each carbon black daily storage hopper and the current working status of each switch type sensor. The alarm component includes an audible and visual alarm.

6. The overpressure emergency anti-mixing protection device according to claim 5 is characterized in that: The alarm component is provided with a wireless communication circuit connected to the PLC controller. The wireless communication circuit is implemented by a Bluetooth module and is used to transmit early warning information to an external host computer or a mobile terminal.

Images