A monitoring and sampling device for plasticizer production

Abstract

The utility model relates to the field of plasticizer production, especially a kind of plasticizer production monitoring sampling device.The utility model provides a kind of can carry out real-time monitoring to plasticizer acid value in production process, reduce the time of plasticizer back to reaction kettle, avoid the plasticizer production monitoring sampling device of temperature influence production quality.A kind of plasticizer production monitoring sampling device, including support foot, reaction kettle and upper cover etc., reaction kettle downside is connected with multiple support feet, and reaction kettle upside is detachably connected with upper cover.The utility model carries out real-time monitoring to its acid value by NIR spectrometer when plasticizer overflow to sampling tank, after the data obtained by detection, second motor can be started, drive screw conveying rod rotation, so that plasticizer is inwardly conveyed to reaction kettle, reaches can carry out real-time monitoring to plasticizer acid value in production process, reduce the time of plasticizer back to reaction kettle, avoid the effect of temperature influence production quality.

Description

Technical Field

[0001] This utility model relates to the field of plasticizer production, and in particular to a plasticizer production monitoring and sampling device. Background Technology

[0002] In the field of chemical materials production, plasticizers, as key additives for improving the flexibility and processing performance of polymer materials, directly affect the performance and application safety of downstream products due to their quality stability. The production process of plasticizers involves complex chemical reactions, among which acid value, as a core indicator for measuring the purity of plasticizers and the progress of the reaction, is crucial for ensuring product quality.

[0003] For example, a plasticizer reaction apparatus with announcement number CN114849616B includes a reactor body and an equipment mounting plate fixed to one side of the lower end of the reactor body. Above the equipment mounting plate is a sampling and detection mechanism for detecting the liquid inside the reactor body. In this apparatus, the sampling and detection mechanism can extract, detect, and return the reaction liquid inside the reactor to the reactor. The entire process does not dilute or reduce the amount of reaction liquid returned to the reactor, thus not affecting the reaction endpoint of the entire plasticizer production process. Furthermore, after the sampling and detection mechanism has completed its self-cleaning process, it can continue to detect the reaction liquid inside the reactor, achieving continuous detection of the reaction liquid. The self-cleaning process does not require manual operation, greatly improving production safety. However, because the plasticizer has a long path to the reactor during the extraction, detection, and return processes, it takes longer to leave the reactor. Since the external temperature differs from the internal temperature, it is easily affected by the external temperature, which can impact production quality.

[0004] Therefore, it is necessary to design a plasticizer production monitoring and sampling device that can monitor the acid value of plasticizers in real time during the production process, reduce the time of plasticizer discharge back to the reactor, and avoid the impact of temperature on production quality. Utility Model Content

[0005] To overcome the shortcomings of existing technologies where the plasticizer has a long path to be discharged back into the reactor during the extraction, testing, and discharge process, increasing the time it takes to leave the reactor, and being easily affected by the difference between the external temperature and the temperature inside the reactor, thus affecting the production quality, this utility model provides a plasticizer production monitoring and sampling device that can monitor the acid value of plasticizer in real time during the production process, reduce the time for plasticizer to be discharged back into the reactor, and avoid the impact of temperature on production quality.

[0006] The technical solution of this utility model is: a plasticizer production monitoring and sampling device, including support feet, a reaction vessel, a top cover, a connecting frame, a first motor, a visual inspection cover, a heating wire, a stirring rod, a discharge pipe, an overflow prevention pipe, a monitoring and sampling component, and a conveying component. Multiple support feet are connected to the lower side of the reaction vessel. A top cover is detachably connected to the upper side of the reaction vessel. A connecting frame is connected to the upper part of the top cover. A first motor is connected to the middle of the connecting frame. The first motor and a processor are electrically connected via a control module. A visual inspection cover is rotatably connected to the top cover. A stirring rod is connected to the output shaft of the first motor. A heating wire is connected inside the reaction vessel. A discharge pipe is connected to the lower side of the reaction vessel. An overflow prevention pipe is connected to the upper left side of the reaction vessel. A monitoring and sampling component is provided at the lower part of the reaction vessel, enabling real-time monitoring and convenient sampling of plasticizers during production. A conveying component is provided on the monitoring and sampling component, enabling upward or downward conveying.

[0007] Furthermore, a handle is provided on the upper side of the inspection cover.

[0008] Furthermore, it also includes a feed pipe, with two feed pipes connected to the upper right side of the top cover.

[0009] Furthermore, it also includes scrapers, with multiple scrapers connected to the outside of the stirring rod.

[0010] Furthermore, the monitoring and sampling assembly includes a temperature sensor, a valve, a sampling vessel, and an NIR spectrometer. The temperature sensor is connected to the lower left of the reactor, and the sampling vessel is threadedly connected to the lower left of the reactor. A valve is installed at the bottom of the sampling vessel, and an NIR spectrometer is connected to the front of the sampling vessel.

[0011] Furthermore, it also includes a conveying assembly, which includes a second motor and a screw conveyor. The second motor is connected to the lower side of the sampling tank. The second motor and the processor are electrically connected through a control module. The screw conveyor is connected to the output shaft of the second motor.

[0012] The beneficial effects are as follows: 1. When the plasticizer overflows into the sampling tank, the acid value of the plasticizer is monitored in real time by an NIR spectrometer. After the data is obtained, the second motor can be started to drive the screw conveyor to rotate, so that the plasticizer is transported into the reactor. This achieves the effect of real-time monitoring of the acid value of the plasticizer during the production process, reducing the time for the plasticizer to be discharged back into the reactor, and avoiding the effect of temperature affecting the production quality.

[0013] 2. This utility model connects the sampling can with the connecting pipe via the thread on the sampling can, and the installation is completed by rotating the sampling can, which achieves the effect of easy installation and disassembly of the sampling can, simple operation, and convenient use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the stirring rod and scraper components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the sampling container and valves of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the sampling container and spiral conveyor rod of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the second motor and the screw conveyor rod of this utility model.

[0019] Component names and serial numbers in the diagram: 1_Support leg, 2_Reaction vessel, 3_Top cover, 4_Feed pipe, 5_Connecting frame, 6_First motor, 7_Inspection cover, 8_Heating wire, 9_Stirring rod, 10_Scraper, 11_Discharge pipe, 12_Overflow prevention pipe, 13_Temperature detection head, 14_Valve, 15_Sampling tank, 16_NIR spectrometer, 17_Second motor, 18_Screw conveyor rod. Detailed Implementation

[0020] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] A plasticizer production monitoring and sampling device, such as Figures 1-3 As shown, the assembly includes support legs 1, a reactor 2, a top cover 3, a feed pipe 4, a connecting frame 5, a first motor 6, a sight glass 7, a heating wire 8, a stirring rod 9, a scraper 10, a discharge pipe 11, an overflow prevention pipe 12, a monitoring and sampling assembly, and a conveying assembly. Three support legs 1 are connected to the lower side of the reactor 2. The top cover 3 is detachably connected to the upper side of the reactor 2. Two feed pipes 4 are connected to the upper right side of the top cover 3. A connecting frame 5 is connected to the upper middle part of the top cover 3. The first motor 6 is connected to the middle of the connecting frame 5. The first motor 6 and the processor are electrically connected through the control module. A sight cover 7 is rotatably connected to the upper cover 3. A stirring rod 9 is connected to the output shaft of the first motor 6. A handle is provided on the upper side of the sight cover 7 for easy gripping. A heating wire 8 is connected inside the reactor 2. Thirteen scrapers 10 are connected to the outside of the stirring rod 9. A discharge pipe 11 is connected to the lower side of the reactor 2. An anti-overflow pipe 12 is connected to the upper left side of the reactor 2. A monitoring and sampling component is provided at the lower part of the reactor 2. A conveying component is provided on the monitoring and sampling component.

[0022] like Figures 2-5As shown, the monitoring and sampling assembly includes a temperature detection head 13, a valve 14, a sampling canister 15, and an NIR spectrometer 16. The temperature detection head 13 is connected to the lower left of the reaction vessel 2, and the sampling canister 15 is threadedly connected to the lower left of the reaction vessel 2. The valve 14 is installed at the bottom of the sampling canister 15, and the NIR spectrometer 16 is connected to the front of the sampling canister 15.

[0023] like Figure 4 and Figure 5 As shown, it also includes a conveying assembly, which includes a second motor 17 and a screw conveyor 18. The second motor 17 is connected to the lower side of the sampling tank 15. The second motor 17 and the processor are electrically connected through a control module. The screw conveyor 18 is connected to the output shaft of the second motor 17.

[0024] When using this device, the reactor 2 is first placed in the plasticizer production area and supported by the support legs 1. Then, the raw materials are added into the reactor 2 through the feed pipe 4, and then heated by the heating wire 8. The internal temperature of the reactor 2 is detected by the temperature detection head 13. Then, the first motor 6 is started to drive the stirring rod 9 to rotate, heating and stirring the plasticizer raw materials. The plasticizer adhering to the inner wall of the reactor 2 is scraped off by the scraper 10. When the plasticizer in the reactor 2 is too full, it can be discharged from the overflow pipe 12. When the plasticizer overflows into the sampling tank 15, its acid value is monitored in real time by the NIR spectrometer 16. After the data is obtained, the second motor 17 can be started to drive the screw conveyor 18 to rotate, so that the plasticizer is transported into the reactor 2 and mixed by the stirring rod 9. This allows for real-time monitoring of the acid value of the plasticizer during the production process, reduces the time for the plasticizer to be discharged back into the reactor 2, and avoids the impact of temperature on production quality. When it is necessary to sample the plasticizer, valve 14 can be opened, and the second motor 17 can drive the screw conveyor 18 to rotate, so that the plasticizer is conveyed downwards for sampling. Afterwards, the sampling canister 15 can be rotated, so that the sampling canister 15 moves downwards and separates from the reactor 2 under the action of the thread. When it is necessary to install the sampling canister 15 onto the connecting pipe of different reactors 2, it can be connected to the connecting pipe through the thread on the sampling canister 15, and the installation can be completed by rotating the sampling canister 15. Thus, the sampling canister 15 can be easily installed and disassembled, and the operation is simple and convenient.

[0025] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A sampling device for monitoring plasticizer production, characterized in that, The reactor includes a support foot (1), a reactor vessel (2), a top cover (3), a connecting frame (5), a first motor (6), a visual inspection cover (7), a heating wire (8), a stirring rod (9), a discharge pipe (11), an overflow prevention pipe (12), a monitoring and sampling assembly, and a conveying assembly. Multiple support feet (1) are connected to the lower side of the reactor vessel (2). A top cover (3) is detachably connected to the upper side of the reactor vessel (2). A connecting frame (5) is connected to the upper part of the middle of the top cover (3). A first motor (6) is connected to the middle of the connecting frame (5). The first motor (6) and the processor are also connected. Electrically connected via control module, inspection cover (7) is rotatably connected to the top cover (3), stirring rod (9) is connected to the output shaft of the first motor (6), heating wire (8) is connected inside the reactor (2), discharge pipe (11) is connected to the lower side of the reactor (2), overflow pipe (12) is connected to the upper left side of the reactor (2), and a monitoring and sampling component is provided at the lower part of the reactor (2) to monitor the plasticizer in real time and facilitate sampling during the production process. The monitoring and sampling component is provided with a conveying component that can convey upward or downward.

2. The plasticizer production monitoring and sampling device according to claim 1, characterized in that, The inspection cover (7) has a handle on the upper side.

3. The plasticizer production monitoring and sampling device according to claim 1, characterized in that, It also includes a feed pipe (4), and the upper right side of the cover (3) is connected to two feed pipes (4) in the front and rear.

4. The plasticizer production monitoring and sampling device according to claim 1, characterized in that, It also includes a scraper (10), and multiple scrapers (10) are connected to the outside of the stirring rod (9).

5. The plasticizer production monitoring and sampling device according to claim 1, characterized in that, The monitoring and sampling assembly includes a temperature sensor (13), a valve (14), a sampling container (15), and an NIR spectrometer (16). The temperature sensor (13) is connected to the lower left of the reactor (2), and the sampling container (15) is connected to the lower left of the reactor (2) by a thread. The valve (14) is installed at the bottom of the sampling container (15), and the NIR spectrometer (16) is connected to the front of the sampling container (15).

6. The plasticizer production monitoring and sampling device according to claim 1, characterized in that, It also includes a conveying assembly, which includes a second motor (17) and a screw conveyor (18). The second motor (17) is connected to the lower side of the sampling tank (15). The second motor (17) and the processor are electrically connected through a control module. The screw conveyor (18) is connected to the output shaft of the second motor (17).

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