Adhesive preparation reaction kettle with online viscosity detection

Abstract

The utility model discloses a kind of adhesive preparation reaction kettle with online viscosity detection, including kettle body and control unit, the top of kettle body is fixedly connected with stirring motor, the output end of stirring motor is connected with stirring shaft, stirring shaft is inserted into the inside of kettle body and the lower end of stirring shaft is connected with stirrer, kettle body is installed with online viscosity detection device, online viscosity detection device includes detection motor, torque sensor, detection shaft and detection element, detection motor is fixed in the top side of kettle body, detection shaft is inserted into the inside of kettle body and is connected with the output shaft of detection motor, detection element is fixedly installed in the lower end of detection shaft, torque sensor is installed on the output shaft of detection motor, stirring motor, detection motor, torque sensor are electrically connected with control unit respectively.The utility model is integrated online viscosity detection device, realizes real-time viscosity monitoring, simple and ingenious structure, easy to operate and use.

Description

Technical Field

[0001] This utility model relates to the field of adhesive production equipment technology, and in particular to an adhesive preparation reaction vessel with online viscosity detection. Background Technology

[0002] In the production and preparation of adhesives, viscosity is one of the key quality control indicators, directly affecting the coatability, bonding strength, and final product performance of the adhesive. Traditional reaction vessels typically employ offline viscosity testing methods, where samples are taken from the reaction vessel and sent to a laboratory for testing. This method suffers from problems such as detection delays, cumbersome operation, and susceptibility to errors. It cannot provide real-time feedback on viscosity changes, leading to inaccurate process control and impacting the quality stability and production efficiency of the adhesive. Existing online viscosity testing devices are complex in structure, costly, and prone to interfering with the reaction process, making them unsuitable for widespread application in small or medium-sized reaction vessels.

[0003] Therefore, there is an urgent need for an adhesive preparation reactor that is simple in structure, easy to operate, and capable of real-time online viscosity monitoring. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adhesive preparation reactor with online viscosity detection. By integrating an online viscosity detection device, real-time viscosity monitoring is achieved. The structure is simple and ingenious, and it is easy to operate and use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adhesive preparation reactor with online viscosity detection includes a reactor body and a control unit. A stirring motor is fixedly connected to the top of the reactor body, and a stirring shaft is connected to the output end of the stirring motor. The stirring shaft extends into the interior of the reactor body, and a stirrer is connected to the lower end of the stirring shaft. An online viscosity detection device is installed in the reactor body. The online viscosity detection device includes a detection motor, a torque sensor, a detection shaft, and a detection element. The detection motor is fixed to the top side of the reactor body. The detection shaft extends into the interior of the reactor body and is connected to the output shaft of the detection motor. The detection element is fixedly installed at the lower end of the detection shaft. The torque sensor is installed on the output shaft of the detection motor. The stirring motor, the detection motor, and the torque sensor are electrically connected to the control unit.

[0007] Furthermore, the detection element is a disc.

[0008] Furthermore, the inner wall of the vessel is provided with several flow-disrupting elements at the height position corresponding to the detection element.

[0009] Furthermore, the baffle is a rib plate welded to the vessel body.

[0010] Furthermore, the control unit includes a PLC controller, a touch screen for displaying viscosity values, and an alarm module for issuing an alarm when the target viscosity value is reached. The PLC controller includes a data storage module for pre-storing torque-viscosity calibration curve data and a data processing module for calculating the real-time viscosity value of the material based on real-time torque data.

[0011] Furthermore, both the stirring motor and the detection motor are servo motors or variable frequency motors.

[0012] Furthermore, the agitator is a U-shaped impeller.

[0013] Furthermore, the vessel body is provided with a viewing window and / or a cleaning ball.

[0014] Furthermore, the top of the vessel is provided with a feed inlet, the feed inlet is provided with a sealing cover, the bottom of the vessel is provided with a discharge outlet, and the discharge outlet is provided with a discharge valve.

[0015] Furthermore, the outer periphery of the vessel is provided with a temperature regulating jacket for adjusting the reaction temperature.

[0016] Compared with the prior art, this utility model provides an adhesive preparation reactor with online viscosity detection, which has the following beneficial effects:

[0017] (1) Viscosity changes are monitored in real time by an online viscosity detection device, avoiding the delay of offline detection and improving production efficiency and product quality control accuracy.

[0018] (2) It has a simple and ingenious structure, low cost, and is easy to modify or integrate on existing reactors. It is easy to operate and suitable for small and medium-sized production environments.

[0019] (3) The online viscosity detection device is integrated with the reaction vessel to reduce external interference and ensure detection accuracy. At the same time, the control unit realizes automatic alarm or adjustment, improving the level of automation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a block diagram illustrating the control principle of this utility model.

[0023] Reference numerals: 1. Reactor body; 11. Baffle; 12. Inlet; 13. Sealing cap; 14. Outlet; 15. Outlet valve; 16. Temperature regulating jacket; 2. Stirring motor; 3. Stirring shaft; 4. Stirrer; 5. Online viscosity detection device; 51. Detection motor; 52. Torque sensor; 53. Detection shaft; 54. Detection element; 6. Control unit; 61. PLC controller; 62. Touch screen; 63. Alarm module; 7. Viewing window; 8. Cleaning ball. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0025] Please refer to Figure 1 and Figure 2 This embodiment provides an adhesive preparation reactor with online viscosity detection, including a reactor body 1, a control unit 6, and an online viscosity detection device 5.

[0026] The reactor body 1 has a feed inlet 12 at the top, which is fitted with a sealing cap 13. The reactor body 1 also has a discharge outlet 14 at the bottom, equipped with a discharge valve 15. A temperature regulating jacket 16 for adjusting the reaction temperature is located on the outer periphery of the reactor body 1. A stirring motor 2 is fixedly connected to the center of the top of the reactor body 1 via a bracket. The output end of the stirring motor 2 is connected to a stirring shaft 3, which extends into the reactor body 1 through a mechanical seal. A stirrer 4 is connected to the lower end of the stirring shaft 3 for mixing and stirring the adhesive material inside the reactor.

[0027] The online viscosity detection device 5 includes a detection motor 51, a torque sensor 52, a detection shaft 53, and a detection element 54. The detection motor 51 is fixed to the top side of the vessel body 1 via a mounting base. The detection shaft 53 extends vertically into the vessel body 1 via bearings and seals and is connected to the output shaft of the detection motor 51. The detection element 54 is a thin disc, fixedly mounted at the lower end of the detection shaft 53. It is completely spatially separated from the stirring shaft 3, with no mechanical connection between them, and is in a non-contact state. The torque sensor 52 is mounted on the output shaft of the detection motor 51 and is used to detect in real time the torque required to drive the detection element 54 to rotate. The stirring motor 2, detection motor 51, and torque sensor 52 are electrically connected to the control unit 6.

[0028] The control unit 6 includes a PLC controller 61, a touch screen 62 for displaying viscosity values, and an alarm module 63 for issuing an alarm when the target viscosity value is reached. The PLC controller 61 includes a data storage module for pre-storing torque-viscosity calibration curve data and a data processing module for calculating the real-time viscosity value of the material based on the real-time torque data.

[0029] In some specific implementations, both the stirring motor 2 and the detection motor 51 are servo motors or variable frequency motors. The alarm module 63 is an audible and visual alarm. The discharge valve 15 is an electrically controlled valve to cooperate with the PLC controller 61 to achieve automatic material discharge.

[0030] In some specific implementation methods, such as Figure 1 As shown, the agitator 4 is a U-shaped impeller. This shape of impeller can effectively mix and stir the adhesive materials inside the vessel 1.

[0031] refer to Figure 1 As an improved implementation, a number of flow-deflecting elements 11 are welded to the inner wall of the vessel body 1 at a position corresponding to the height of the detection element 54. Specifically, these flow-deflecting elements 11 are ribs that are welded and fixedly connected to the vessel body 1 and are distributed at equal intervals. The arrangement of these flow-deflecting elements 11 can disrupt the laminar flow state of the fluid around the detection element 54, increase local turbulence, and thus make the torque measurement value more sensitive to viscosity changes.

[0032] In addition, in some other implementations, such as Figure 1 As shown, the vessel body 1 is further provided with a viewing window 7 and a cleaning ball 8 for passing cleaning water through to spray and rinse the inside of the vessel body 1, which facilitates observation and cleaning.

[0033] refer to Figure 1 and Figure 2 During operation, the stirring motor 2 drives the stirring shaft 3 to rotate at high speed, performing main stirring of the material. After a preset time interval, the PLC controller 61 starts the detection motor 51, which drives the detection shaft 53 and the detection element 54 (disc) to rotate slowly at a constant, low speed. The higher the viscosity of the material, the greater the viscous resistance torque generated on the rotation of the detection element 54. This resistance torque acts back on the detection motor 51, is accurately captured by the torque sensor 52, and converted into an electrical signal transmitted to the PLC controller 61. The PLC controller 61 has pre-stored torque-viscosity calibration curve data. By processing the real-time torque data, the real-time viscosity value of the material can be calculated. The operator can monitor the viscosity change in real time through the touch screen 62 interface, or set a viscosity threshold. When the target viscosity is reached, the PLC controller 61 activates the alarm module 63 to issue an alarm or automatically stop heating, cooling, and other operations.

[0034] As an example, suppose that at a certain moment, torque sensor 52 measures a torque value T of 0.005 N·m. Detection motor 51 drives detection element 54 (disc, 50 mm in diameter) to rotate at a constant angular velocity ω (e.g., 10 rad / s). Through prior calibration using a standard viscosity fluid (e.g., a fluid with known viscosity of 1 Pa·s, 2 Pa·s, etc.), the calibration constant C of the system is obtained as 0.001 N·m / (Pa·s). The calibration constant C is obtained through linear regression fitting and represents the proportional relationship between torque and viscosity, i.e. Therefore, the real-time viscosity μ can be calculated using this proportional relationship, where Pa·s is the unit of viscosity. The control unit 6 calculates and displays the viscosity value in real time based on this formula. In practical applications, the calibration constant C may vary slightly due to factors such as disk size, fluid type, and temperature; therefore, the control unit 6 can store multiple calibration curves to adapt to different process conditions.

[0035] It should be noted that the electric control valve, stirring motor 2, detection motor 51, torque sensor 52, PLC controller 61, touch screen 62, and audible and visual alarm are all commonly used electrical components in the chemical industry. Appropriate product specifications and models can be selected according to actual usage needs.

[0036] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adhesive preparation reactor with online viscosity detection, comprising a reactor body and a control unit, wherein a stirring motor is fixedly connected to the top of the reactor body, a stirring shaft is connected to the output end of the stirring motor, the stirring shaft extends into the interior of the reactor body, and a stirrer is connected to the lower end of the stirring shaft, characterized in that, The vessel body is equipped with an online viscosity detection device, which includes a detection motor, a torque sensor, a detection shaft, and a detection element. The detection motor is fixed to the top side of the vessel body, the detection shaft extends into the interior of the vessel body and is connected to the output shaft of the detection motor, the detection element is fixedly installed at the lower end of the detection shaft, and the torque sensor is installed on the output shaft of the detection motor. The stirring motor, the detection motor, and the torque sensor are electrically connected to the control unit.

2. The adhesive preparation reactor with online viscosity detection according to claim 1, characterized in that, The detection element is a disc.

3. The adhesive preparation reactor with online viscosity detection according to claim 1, characterized in that, The inner wall of the vessel is provided with several flow-disrupting elements at the height position corresponding to the detection element.

4. The adhesive preparation reactor with online viscosity detection according to claim 3, characterized in that, The baffle is a rib plate that is welded to the vessel body.

5. The adhesive preparation reactor with online viscosity detection according to claim 1, characterized in that, The control unit includes a PLC controller, a touch screen for displaying viscosity values, and an alarm module for issuing an alarm when the target viscosity value is reached. The PLC controller includes a data storage module for pre-storing torque-viscosity calibration curve data and a data processing module for calculating the real-time viscosity value of the material based on real-time torque data.

6. The adhesive preparation reactor with online viscosity detection according to claim 5, characterized in that, Both the stirring motor and the detection motor are servo motors or variable frequency motors.

7. The adhesive preparation reactor with online viscosity detection according to claim 1, characterized in that, The agitator is a U-shaped agitator.

8. The adhesive preparation reactor with online viscosity detection according to claim 1, characterized in that, The vessel body is provided with a viewing window and / or a cleaning ball.

9. The adhesive preparation reactor with online viscosity detection according to any one of claims 1 to 8, characterized in that, The top of the vessel is provided with a feed inlet, which is equipped with a sealing cap. The bottom of the vessel is provided with a discharge outlet, which is equipped with a discharge valve.

10. The adhesive preparation reactor with online viscosity detection according to claim 9, characterized in that, The outer periphery of the vessel is provided with a temperature regulating jacket for adjusting the reaction temperature.

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