Hexamethyldisiloxane mixing reaction kettle

Abstract

The utility model relates to the field of chemical equipment, in particular to a hexamethyldisiloxane mixing reaction kettle, which comprises a supporting seat and a mixing kettle, the supporting seat is used as a supporting structure of the mixing kettle, a sealing cover plate is arranged at the top of the mixing kettle, two feeding pipes are arranged at the top of the sealing cover plate and are respectively used for adding a silane precursor and water, and the sealing cover plate is used for sealing the mixing kettle. Each feeding pipe is provided with a valve, a motor is mounted at the bottom in the mixing kettle, and an output shaft of the motor is connected with a stirring paddle. A set of high-precision temperature control system is integrated by the thermal insulation shell, the temperature controller, the circulating pipe, the temperature detector and the controller, temperature change can be quickly responded by utilizing the temperature controller and the circulating pipe, the temperature in the kettle is ensured to quickly reach and be stabilized at a set value, the influence of temperature fluctuation on reaction is avoided, and the temperature in the kettle is continuously monitored by utilizing the temperature detector, so that the reaction time is shortened. And data are fed back to the temperature controller in real time, so that closed-loop control of the temperature is realized, the stability and consistency of reaction conditions are ensured, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and in particular to a hexamethyldisiloxane mixing reactor. Background Technology

[0002] Hexamethyldisiloxane is an important organosilicon compound with wide applications in semiconductor manufacturing, coatings, adhesives, cosmetics, and many other fields. In the synthesis and production process of hexamethyldisiloxane, hydrolysis is a common method, which is prepared by reacting trimethylchlorosilane with water. In this process, the rapid and thorough mixing of raw materials and temperature are key factors affecting its hydrolysis efficiency and the quality of the finished product.

[0003] Patent CN221514506U discloses a stirred tank for the preparation of hexamethyldisiloxane. This patent uses a squeeze box to deform and eject liquid, and controls the size of the opening on the other side to spray the liquid onto the side wall of the tank, causing the reactants adhering to the side wall to flow. By impacting the side wall with the fluid, friction caused by the hard connection between the stirrer and the tank can be avoided. This allows the stirrer to maintain a gap with the side wall while also removing the reactants adhering to the side wall. However, this patent still has some shortcomings in practical applications. Since precise temperature control during the reaction is crucial for the reaction rate and product purity, excessively high temperatures may lead to side reactions, while excessively low temperatures will affect the reaction rate. This patent lacks effective temperature control methods, resulting in large temperature fluctuations within the reactor, which affects the stability of product quality.

[0004] To address the above problems, this utility model provides a hexamethyldisiloxane mixing reactor with automatic temperature control function. Utility Model Content

[0005] In order to overcome the shortcomings of existing patents in lacking effective temperature control, which affects the stability of product quality, this utility model provides a hexamethyldisiloxane mixing reactor with automatic temperature control function.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a hexamethyldisiloxane mixing reactor, comprising a support base and a mixing vessel. The support base serves as the supporting structure for the mixing vessel. A sealing cover is provided on the top of the mixing vessel, and two feed pipes are installed on the top of the sealing cover for adding silane precursor and water, respectively. Each feed pipe is equipped with a valve. A motor is installed at the bottom of the mixing vessel, and a stirring paddle is connected to the output shaft of the motor. A discharge pipe is provided at the bottom of the mixing vessel, and an electronic valve is installed at the upper end of the discharge pipe. The mixing vessel is externally encased in an insulation shell, and a temperature controller is installed on the insulation shell. A circulation pipe is connected to the temperature controller and is located inside the insulation shell. A temperature detector is installed at the upper end of the mixing vessel, and a controller is installed on the top of the insulation shell. The controller is connected to the temperature controller and the electronic valve to achieve automated control of the entire system.

[0007] Optionally, the circulation pipe is arranged around the outer surface of the mixing vessel.

[0008] Optionally, an observation plate is embedded in the side of the discharge pipe.

[0009] Optionally, a spiral blade is rotatably installed inside the discharge pipe, and a servo motor is installed at the rear end of the discharge pipe via a support plate. The output shaft of the servo motor passes through the discharge pipe and is connected to the spiral blade.

[0010] Optionally, a support ring is sleeved on the outside of the feed pipe, and a circular baffle is rotatably mounted on the support ring. The circular baffle has a circular material-blocking portion located inside the feed pipe, which serves to close the feed inlet. A warning plate is fixed to the upper end of the circular baffle, and a torsion spring is also sleeved on the upper end of the circular baffle. The two ends of the torsion spring are respectively connected to the circular baffle and the support ring.

[0011] Optionally, a protective shell is fitted onto the upper end of the support ring, and the torsion spring is located inside the protective shell.

[0012] Optionally, a counterweight is provided on the support base.

[0013] Compared with the prior art, the present invention has the following technical effects: 1. By integrating a high-precision temperature control system through the insulation shell, temperature controller, circulation tube, temperature detector and controller, the temperature controller and circulation tube can quickly respond to temperature changes, ensuring that the temperature inside the vessel quickly reaches and stabilizes at the set value, avoiding the influence of temperature fluctuations on the reaction. The temperature detector continuously monitors the temperature inside the vessel and feeds the data back to the temperature controller in real time, realizing closed-loop temperature control, ensuring the stability and consistency of reaction conditions, and improving product quality.

[0014] 2. By combining a servo motor and spiral blades, the automatic discharge function of the mixing vessel is realized, thereby accelerating the discharge speed of reaction products, reducing human intervention, and improving production efficiency and safety.

[0015] 3. A prompting device is formed by a support ring, a circular baffle, a prompting plate, and a torsion spring. This device can intuitively display the material conveying status of the feed pipe, thereby facilitating the control of the feed pipe's opening and closing and ensuring the smooth and reliable feeding process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the mixing vessel, sealing cover, and feed pipe of this utility model.

[0018] Figure 3 This is a three-dimensional sectional view of the insulation shell, temperature controller, and circulation pipe of this utility model.

[0019] Figure 4 This is a three-dimensional sectional view of the motor, impeller, and electronic valve of this utility model.

[0020] Figure 5 This is a three-dimensional sectional view of the support plate, servo motor, and spiral blades of this utility model.

[0021] Figure 6 This is a three-dimensional sectional view of the feed pipe, indicator plate, and protective shell of this utility model.

[0022] Figure 7 This is a three-dimensional sectional view of the support ring, circular baffle, and indicator plate of this utility model.

[0023] Figure 8 This is a three-dimensional sectional view of the indicator board, torsion spring, and protective shell of this utility model.

[0024] The markings in the attached diagram are as follows: 1: Support base, 2: Mixing vessel, 3: Sealing cover, 4: Feed pipe, 5: Valve, 6: Motor, 7: Stirring paddle, 8: Electronic valve, 9: Discharge pipe, 10: Insulation shell, 11: Temperature controller, 12: Circulation pipe, 13: Temperature detector, 14: Controller, 15: Observation panel, 16: Support plate, 17: Servo motor, 18: Spiral blade, 19: Support ring, 20: Circular baffle, 21: Indication panel, 22: Torsion spring, 23: Protective shell, 24: Counterweight. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figures 1-3 A hexamethyldisiloxane mixing reactor includes a support base 1 and a mixing vessel 2. The support base 1 serves as the supporting structure for the mixing vessel 2. A counterweight 24 is installed on the support base 1 to increase the stability of the entire device, preventing shaking or tilting during stirring and reaction, and ensuring smooth operation. A sealing cover 3 is installed on the top of the mixing vessel 2. Two symmetrically distributed feed pipes 4 are installed on the top of the sealing cover 3 for adding silane precursors and water, respectively. Each feed pipe 4 is equipped with a valve 5 to control the material flow. A motor 6 is installed at the bottom of the mixing vessel 2. A stirring paddle 7 is connected to the output shaft of the motor 6, driving the stirring paddle 7 to rotate and achieve stirring of the materials inside the vessel. A discharge pipe 9 is installed at the bottom of the mixing vessel 2. An electronic valve 8 is installed at the upper end of the discharge pipe 9 to control the discharge of reaction products. An observation plate 15 is embedded on the right side of the discharge pipe 9 for operation. Operators can monitor the discharge process in real time through the observation board 15, improving the reliability and safety of discharge. The mixing vessel 2 is wrapped with an insulation shell 10 to maintain a stable temperature inside the reaction vessel. A temperature controller 11 is installed on the insulation shell 10, and a circulation pipe 12 is connected to the temperature controller 11. The circulation pipe 12 is located inside the insulation shell 10 and surrounds the mixing vessel 2. Heating or cooling media is transported through the circulation pipe 12 to regulate and maintain the temperature inside the vessel. Furthermore, the surrounding arrangement of the circulation pipe 12 ensures that the heating or cooling media is evenly distributed on the surface of the mixing vessel 2, making the temperature inside the vessel more uniform. A temperature detector 13 is installed at the upper end of the mixing vessel 2. The probe of the temperature detector 13 extends into the mixing vessel 2 to monitor the temperature changes inside the vessel in real time. A controller 14 is installed on the top of the insulation shell 10. The controller 14 is connected to the temperature controller 11 and the electronic valve 8 to realize the automated control of the entire system.

[0027] First, according to the production process requirements, trimethylchlorosilane and water are added to the mixing vessel 2 through two feed pipes 4. After the materials are added, valve 5 is closed and motor 6 is started. The output shaft of motor 6 drives the stirring paddle 7 to rotate, thereby uniformly stirring the materials in the vessel and promoting the chemical reaction. Next, the required reaction temperature is set by temperature controller 11. Temperature controller 11 delivers heating or cooling medium to the inside of the insulation shell 10 through circulation pipe 12 to ensure that the temperature inside the vessel can quickly reach and stabilize at the set value. During this period, temperature detector 13 continuously monitors the temperature inside the vessel and feeds the data back to temperature controller 11. To achieve closed-loop temperature control, at the set temperature, the silane precursor undergoes a hydrolysis reaction with water to generate hexamethyldisiloxane and hydrochloric acid as a byproduct. The stirring paddle 7 continues to work to ensure uniform distribution of reactants, improve reaction rate and product purity. The entire process is monitored by the controller 14, which receives data from the temperature detector 13 and automatically adjusts the working state of the temperature controller 11 according to preset parameters. If necessary, it can also adjust the stirring speed or the opening and closing state of the valve 5 to ensure that the reaction conditions meet the process requirements. When the reaction is completed, the stirring system and the temperature control system are stopped, and the electronic valve 8 is opened to discharge the reaction product from the discharge pipe 9.

[0028] Example 2: Based on Example 1, please refer to... Figure 4 and Figure 5 The discharge pipe 9 has a spiral blade 18 rotatably installed inside for outputting reaction products. A servo motor 17 is installed at the rear end of the discharge pipe 9 via a support plate 16. The output shaft of the servo motor 17 passes through the discharge pipe 9 and connects to the spiral blade 18 to provide power to the spiral blade 18. After the servo motor 17 is turned on, the spiral blade 18 can rotate under the drive of the servo motor 17 to push the reaction products out of the discharge pipe 9, thereby accelerating the discharge of the reaction products.

[0029] Please see Figure 6 and Figure 8 The feed pipe 4 is fitted with a support ring 19, and a circular baffle 20 is rotatably mounted on the support ring 19. The circular baffle 20 has a circular material blocking part inside the feed pipe 4, which serves to close the feed inlet. An indicator plate 21 is fixed to the upper end of the circular baffle 20 to display the material conveying status of the device. A torsion spring 22 is also fitted on the upper end of the circular baffle 20. The two ends of the torsion spring 22 are connected to the circular baffle 20 and the support ring 19, respectively, to provide a restoring force for the circular baffle 20. A protective shell 23 is fitted on the upper end of the support ring 19, and the torsion spring 22 is located inside the protective shell 23 to protect the torsion spring 22 and prevent external impurities from affecting the operation of the torsion spring 22.

[0030] When the feed pipe 4 starts feeding, the material flow impacts the circular baffle 20, causing the circular baffle 20 to rotate and open. The torsion spring 22 deforms, and the indicator plate 21 changes position with the rotation of the circular baffle 20, indicating that the material is being conveyed. When the feed pipe 4 stops feeding, the circular baffle 20 resets under the elastic force of the torsion spring 22, returning to the position of closing the feed port. The indicator plate 21 also resets, indicating that the material has stopped being conveyed. The indicator plate 21 visually displays the status of the feed pipe 4, making it convenient for operators to effectively control the opening and closing of the feed pipe 4.

[0031] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A hexamethyldisiloxane mixing reactor, comprising a support base (1) and a mixing vessel (2), wherein the support base (1) serves as the supporting structure for the mixing vessel (2), the mixing vessel (2) is provided with a sealing cover plate (3) at the top, and two feed pipes (4) are provided at the top of the sealing cover plate (3) for adding silane precursor and water respectively, and each feed pipe (4) is equipped with a valve (5), a motor (6) is installed at the bottom of the mixing vessel (2), a stirring paddle (7) is connected to the output shaft of the motor (6), and a discharge pipe (9) is provided at the bottom of the mixing vessel (2), and an electronic valve (8) is installed at the upper end of the discharge pipe (9), characterized in that, The mixing vessel (2) is wrapped with an insulation shell (10). A temperature controller (11) is installed on the insulation shell (10). A circulation pipe (12) is connected to the temperature controller (11). The circulation pipe (12) is located inside the insulation shell (10). A temperature detector (13) is installed at the upper end of the mixing vessel (2). A controller (14) is installed on the top of the insulation shell (10). The controller (14) is connected to the temperature controller (11) and the electronic valve (8) to realize the automatic control of the entire system.

2. A hexamethyldisiloxane mixing reactor according to claim 1, characterized in that, The circulation pipe (12) is arranged around the outer surface of the mixing vessel (2).

3. A hexamethyldisiloxane mixing reactor according to claim 2, characterized in that, An observation plate (15) is embedded in the side of the discharge pipe (9).

4. A hexamethyldisiloxane mixing reactor according to claim 3, characterized in that, The discharge pipe (9) has a spiral blade (18) rotatably installed inside. A servo motor (17) is installed at the rear end of the discharge pipe (9) through a support plate (16). The output shaft of the servo motor (17) passes through the discharge pipe (9) and connects with the spiral blade (18).

5. A hexamethyldisiloxane mixing reactor according to claim 4, characterized in that, The feed pipe (4) is fitted with a support ring (19), and a circular baffle (20) is rotatably mounted on the support ring (19). The circular baffle (20) has a circular material blocking part inside the feed pipe (4) to close the feed inlet. A prompt plate (21) is fixedly connected to the upper end of the circular baffle (20). A torsion spring (22) is also fitted on the upper end of the circular baffle (20). The two ends of the torsion spring (22) are connected to the circular baffle (20) and the support ring (19) respectively.

6. A hexamethyldisiloxane mixing reactor according to claim 5, characterized in that, The upper end of the support ring (19) is fitted with a protective shell (23), and the torsion spring (22) is located inside the protective shell (23).

7. A hexamethyldisiloxane mixing reactor according to claim 6, characterized in that, The support base (1) is provided with a counterweight (24).

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