A stirring structure for a reaction kettle

Abstract

The utility model provides a kind of stirring structure for reaction kettle, including the reaction cylinder being arranged in the inside of stirring barrel, the inside of reaction cylinder is provided with the transmission connection of driving element rotating rod, rotating rod is hollow structure, rotating rod is provided with rotating element on the axis, the inside of rotating element is provided with the inlet gas liquid inlet pipe being linked with outside gas station or water pump, rotating rod outer side wall is equipped with multiple exhaust liquid outlet, the outside of rotating rod is provided with stirring vane, the utility model can be rotated with rotating rod and its outside stirring vane by the rotation of the output shaft of driving element to realize the efficient mixing operation to material, simultaneously, the blowing operation to material adhered on stirring vane is realized by injecting gas or liquid into inlet gas liquid inlet pipe, realizes the efficient and sufficient mixing operation to material, and mixing effect is better, and efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of stirring structure technology, specifically to a stirring structure for a reaction vessel. Background Technology

[0002] A reaction vessel is a container in which different kinds of solvents can undergo physical or chemical reactions. Due to its specific materials and structure, it can withstand different levels of pressure.

[0003] Existing reaction vessels are equipped with a stirring structure for mixing reagents. This structure is usually not very complex, consisting of a rotating stirring shaft and a stirring paddle mounted on the stirring shaft. In special cases, depending on the ease of mixing the liquid being stirred, an auxiliary stirring roller can also be installed on the stirring shaft.

[0004] In existing reactor stirring structures, materials are prone to adhering to the stirring blade surface due to their high viscosity and strong adhesion, especially high molecular polymers and paste-like materials. Existing structures lack targeted cleaning mechanisms, which not only leads to material waste but also causes uneven mixing due to the reduced effective contact area of ​​the stirring blades. Severe material adhesion to the stirring blades results in material waste and uneven mixing, affecting the quality of the final product. Utility Model Content

[0005] In view of this, the present invention provides a stirring structure for a reactor. This structure utilizes an exhaust and liquid outlet on the rotating rod, combined with an inlet / outlet pipe connected to an external gas station or water pump, to efficiently blow off materials adhering to the stirring blades, allowing them to participate in the mixing process. This solves the problem in existing stirring structures for reactors where materials, especially high-viscosity and highly adhesive materials such as polymers and pastes, easily adhere to the stirring blade surface during mixing. Existing structures lack a targeted cleaning mechanism, leading to material adhesion, which not only wastes raw materials but also reduces the effective contact area of ​​the stirring blades, resulting in uneven mixing and negatively impacting the final product quality.

[0006] To solve the above-mentioned technical problems, this utility model provides a stirring structure for a reaction vessel, including a reaction cylinder disposed inside a stirring tank. Inside the reaction cylinder is a rotating rod that is driven and connected to a driving component. The rotating rod is a hollow structure, and a rotating component is disposed on its axis. An air inlet / liquid inlet pipe connected to an external gas station or water pump is disposed inside the rotating component. Multiple exhaust and drainage ports are opened on the outer wall of the rotating rod, and stirring blades are disposed on the outer side of the rotating rod. This utility model achieves efficient mixing of materials by rotating the rotating rod and its outer stirring blades through the rotation of the output shaft of the driving component. Simultaneously, by injecting gas or liquid into the air inlet / liquid inlet pipe, materials adhering to the stirring blades are blown off, achieving efficient and thorough mixing of materials with better mixing effect and higher efficiency.

[0007] The mixing blades are spiral conveyor blades, which facilitates the mixing and stirring of materials while simultaneously enabling directional conveying, further improving the efficiency of material mixing.

[0008] The driving component is a servo motor. The output shaft of the servo motor is equipped with a drive shaft, and the end of the drive shaft is equipped with a drive gear. The upper part of the rotating rod is equipped with a driven gear that meshes with the drive gear. This utility model can drive the drive gear to rotate together by rotating the output shaft of the servo motor, thereby driving the driven gear that meshes with it to rotate together with the rotating rod.

[0009] The driven gear is sleeved and welded to the outer wall of the rotating rod.

[0010] The reaction chamber includes a guide bucket inside the mixing tank and a limiting cylinder below the guide bucket. The guide bucket facilitates the guidance of the falling material, while the limiting cylinder enables the efficient upward conveying of the material by the screw conveyor blades.

[0011] A bearing is installed at the bottom of the rotating rod. The outer ring of the bearing is fixed to the inner wall of the limiting cylinder by a connecting frame. The connecting frame helps to enhance the stability of the rotating rod's rotation and avoids excessive axial swing caused by its suspension, which would affect the service life of the stirring structure.

[0012] The guide bucket has a structure where the upper opening is larger than the lower opening, which facilitates the smooth falling of materials into the guide cylinder.

[0013] The air and liquid inlet pipes are made of stainless steel to ensure sufficient rigidity.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Solve the problem of material sticking to the stirring blades, reduce waste and ensure uniform mixing: This utility model can inject gas, such as compressed air or liquid, such as process solvent, into the rotating rod through the air and liquid inlet pipe. The gas / liquid is sprayed directionally onto the surface of the stirring blades through the exhaust and liquid outlets on the side wall of the rotating rod, which can quickly blow off the adhered material. This not only reduces raw material waste, but also ensures that the stirring blades always maintain an effective contact area, avoids uneven mixing caused by material sticking, and improves the stability of product quality.

[0015] 2. Solve the problem of low mixing efficiency and improve material circulation and mixing efficiency: This utility model can adopt a spiral conveying blade structure for the stirring blade. When rotating, it can realize the circumferential stirring of materials and, together with the limiting cylinder, realize the directional conveying "from bottom to top", accelerating the circulation of materials in the reactor. Compared with ordinary paddle blades, the material mixing time is greatly shortened, significantly improving production efficiency.

[0016] 3. Solve the problem of poor stability of the rotating rod and extend the service life of the equipment: This utility model can fix the bottom of the rotating rod to the cross-shaped connecting frame through a deep groove ball bearing. The connecting frame is welded to the inner wall of the limiting cylinder, which can effectively limit the axial swing of the rotating rod and avoid friction between the rotating rod and the inner wall of the reaction cylinder. At the same time, the gear transmission adopts carburizing and quenching treatment, which greatly reduces the wear rate and extends the overall service life of the equipment to 18-24 months, reducing maintenance costs.

[0017] 4. Solve the rigidity problem of gas-liquid conveying components and ensure stable function: The air and liquid inlet pipes are made of 304 stainless steel, which has sufficient rigidity and is not easily deformed even under the impact of materials when the stirring blades are rotating at high speed, so as to stably convey gas or liquid; in conjunction with mechanical seal rotating parts, gas and liquid leakage is avoided, ensuring that the functions of cleaning sticky materials and auxiliary stirring are continuously effective. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the stirring structure for the reaction vessel of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of the stirring structure for the reactor of this utility model; Figure 4 This utility model Figure 3 Sectional view at point BB.

[0019] Explanation of reference numerals in the attached drawings: 100, reaction cylinder; 110, guide bucket; 120, limiting cylinder; 200, driving component; 210, drive shaft; 220, driving gear; 230, driven gear; 300, rotating rod; 400, rotating component; 500, air inlet and liquid inlet pipe; 600, exhaust and liquid outlet; 700, stirring blade; 800, connecting frame. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-4 As shown: This embodiment provides a stirring structure for a reaction vessel, including a reaction cylinder 100 disposed inside the stirring tank. The reaction cylinder 100 is made of 304 stainless steel, which has strong corrosion resistance, a temperature range of -270℃ to 450℃, and is suitable for most acid and alkali materials. Inside the reaction cylinder 100 is a rotating rod 300 that is connected to the driving component 200. The rotating rod 300 has a hollow structure and is made of 304 stainless steel, which balances strength and corrosion resistance, and avoids material contamination. Multiple exhaust and drainage ports 600 are evenly distributed axially on the outer wall of the rotating rod 300, with a number ≥ 6. One, facing the surface of the stirring blade 700, is used to spray gas or liquid to clean the material adhering to the stirring blade 700; a rotating component 400 is arranged on the axis of the rotating rod 300, and the rotating component 400 has an air inlet and liquid outlet pipe 500 connected to an external gas station or water pump. Multiple exhaust and liquid outlets 600 are opened on the outer wall of the rotating rod 300. The stirring blade 700 is arranged on the outer side of the rotating rod 300. The rotating component 400 is coaxially arranged on the axis of the rotating rod 300. The rotating component 400 is a mechanical seal assembly, model BIA-25, manufactured by the Mechanical Factory of Beijing University of Chemical Technology, adapted to the hollow structure of the rotating rod 300, realizing gas-liquid transport and rotational sealing; the air inlet and liquid outlet pipe 500, made of 304 stainless steel, is fixedly inserted inside the rotating component 400. To maintain rigidity and prevent deformation, one end of the air inlet / liquid inlet pipe 500 extends out of the mixing tank and connects to an external air station, such as a compressed air station or water pump (model ISG50-160, manufactured by Shanghai Kaiquan Pump Industry Group). The other end extends to the lower part of the rotating rod 300, near the exhaust / liquid outlet 600, for supplying gas or liquid into the rotating rod 300. This invention can achieve efficient mixing of materials by rotating the rotating rod 300 and the stirring blades 700 on its outer side through the rotation of the output shaft of the drive component 200. At the same time, by injecting gas or liquid into the air inlet / liquid inlet pipe 500, the material adhering to the stirring blades 700 is blown off, achieving efficient and thorough mixing of materials with better mixing effect and higher efficiency.

[0022] According to one embodiment of the present invention, such as Figure 1-3As shown, the stirring blade 700 is a spiral conveyor blade made of 316 stainless steel, which is more corrosion resistant than 304 stainless steel and is suitable for highly corrosive materials such as those containing chlorine and sulfur. The spiral conveyor blade rotates in a "right-hand" direction, which can realize the directional conveying of materials from bottom to top when rotating. Combined with the constraint of the limiting cylinder 120, it improves the material conveying and circulation efficiency. The stirring blade 700 is fixedly connected to the rotating rod 300 by welding. The welding joint is treated with argon arc welding to ensure the connection strength. This facilitates the mixing and stirring of materials while realizing their directional conveying, further improving the efficiency of material mixing.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the drive unit 200 is a model MSME022G1U manufactured by Panasonic Electric Works (China) Co., Ltd., which can achieve precise control of the stirring speed. The servo motor is fixed to the top cover plate of the mixing tank by bolts, and its output shaft is fixedly connected to the drive shaft 210 by a coupling. The drive shaft 210 is made of 45# steel with a chrome-plated surface to reduce wear. The drive shaft 210 is located at the end of the output shaft of the servo motor, and the drive gear 220 is located at the end of the drive shaft 210. The upper part of the rotating rod 300 is equipped with a driven gear 240 that meshes with the drive gear 220. The end is connected to a drive gear 220 via a flat key. The drive gear is made of 20CrMnTi and has undergone surface carburizing and quenching treatment. The upper part of the rotating rod 300 extends out of the reaction cylinder 100 and is fixedly fitted with a driven gear 240 by welding. The driven gear 240 is made of the same material as the drive gear 220, which achieves speed reduction and torque increase, and is suitable for stirring high-viscosity materials. The driven gear 240 meshes with the drive gear 220 to ensure stable power transmission. This utility model can drive the drive gear 220 to rotate together by rotating the output shaft of the servo motor, thereby driving the driven gear 240 meshing with it to rotate together with the rotating rod 300.

[0024] Driven gear 240 is fitted and welded to the outer wall of rotating rod 300.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 4As shown, the reaction cylinder 100 includes a guide bucket 110 disposed inside the mixing tank and a limiting cylinder 120 disposed below the guide bucket 110. The guide bucket is a frustum-shaped structure with an upper opening diameter larger than the lower opening diameter, and its taper is 30°-45°, which facilitates the smooth falling of materials in the mixing tank into the limiting cylinder 120. The limiting cylinder 120 is a cylindrical structure, and its inner diameter is adapted to the outer diameter of the stirring blade 700, which is used to limit the radial diffusion of materials and improve the directional conveying efficiency of the stirring blade 700. The outer wall of the reaction cylinder 100 is fixedly connected to the inner wall of the mixing tank by bolts to ensure that the reaction cylinder 100 does not shift during the mixing process. The guide bucket 110 facilitates the guidance of the falling materials, and the limiting cylinder 120 enables the efficient upward conveying of materials by the spiral conveying blades.

[0026] A bearing is installed at the bottom of the rotating rod 300. The bearing, model 6204, is manufactured by SKF (China) Co., Ltd. and is a deep groove ball bearing capable of withstanding radial and slight axial loads. The inner ring of the bearing is interference-fitted with the bottom of the rotating rod 300, and the outer ring of the bearing is fixed to the inner wall of the limiting cylinder 120 via a connecting bracket 800. The connecting bracket 800 has a "cross-shaped" structure and is made of 304 stainless steel. Its end is fixedly connected to the inner wall of the limiting cylinder 120 by welding. This is used to limit the axial swing of the rotating rod 300 and improve rotational stability. The outer ring of the bearing is fixed to the inner wall of the limiting cylinder 120 via the connecting bracket 800. The connecting bracket 800 helps to enhance the rotational stability of the rotating rod 300 and avoids excessive axial swing caused by its suspension, which would affect the service life of the stirring structure.

[0027] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the guide bucket 110 has a structure where the upper opening is larger than the lower opening, which facilitates the smooth falling of materials into the guide cylinder.

[0028] The air and liquid inlet pipes are made of stainless steel (500mm) to ensure sufficient rigidity.

[0029] Working principle and usage of this utility model: First, it should be clarified that the stirring structure involved in this utility model is mainly used for efficient stirring and adhesion removal of various highly viscous materials. This utility model takes the mild stirring of adhesives as an example to explain its working principle and usage method in detail. The working principle is as follows: This device achieves efficient material mixing and reaction assistance through the coordinated operation of four major modules: drive transmission, stirring and conveying, material removal, and stabilization support. Drive transmission module: The servo motor outputs power, which is transmitted to the drive shaft 210 through a coupling. The drive shaft 210 drives the drive gear 220 to rotate. The drive gear 220 meshes with the driven gear 240 to reduce speed and increase torque, thereby driving the rotating rod 300 to rotate coaxially. The rotation speed of the rotating rod 300 can be precisely adjusted by the servo driver to adapt to different material requirements. Stirring and conveying module: When the rotating rod 300 rotates, the outer spiral conveying blades rotate synchronously; under the constraint of the limiting cylinder 120, the right-hand structure of the blades directs the material at the bottom of the reaction cylinder 100 upwards, while realizing the circumferential stirring of the material; the material conveyed to the top falls back to the bottom of the reaction cylinder 100 through the guide bucket 110, forming a "downward conveying and upward falling" material circulation, accelerating the mixing and uniformity; Material Adhesion Cleaning Module: When material adheres to the surface of the stirring blade 700, an external air station / water pump supplies gas / liquid to the air / liquid inlet pipe 500; the gas / liquid enters the hollow cavity of the rotating rod 300 through the rotating component 400 (mechanical seal), and then is sprayed directionally toward the stirring blade 700 through the exhaust and liquid outlet 600 on the side wall of the rotating rod 300, blowing off the adhered material; the cleaned material re-participates in the mixing with the circulating flow, avoiding waste; Stable support module: The deep groove ball bearing at the bottom of the rotating rod 300 bears the radial load, and the cross-shaped connecting bracket 800 fixes the outer ring of the bearing to the inner wall of the limiting cylinder 120, limiting the axial and radial swing of the rotating rod 300; at the same time, the high-precision meshing of the driving gear 220 and the driven gear 240 further ensures the stability of the rotation of the rotating rod 300 and avoids component wear caused by swing. The usage method is as follows: Preparation stage Check device connections: Confirm that the connections between the reaction cylinder 100 and the stirring tank, the rotating rod 300 and the bearing, and the drive component 200 and the gear are secure, and that the connection between the air inlet pipe 500 and the external gas station / water pump is sealed. You can apply soapy water to check for gas leaks. Material input: Open the top cover of the mixing tank and put the materials to be mixed into the reaction cylinder 100 through the guide bucket 110. The volume of the materials should not exceed 80% of the volume of the reaction cylinder 100 to avoid overflow during mixing. Parameter settings: Set the servo motor speed according to the material viscosity, and preset the speed through the servo driver; set the gas / liquid conveying pressure of the 500mm inlet pipe, for example, gas is adjusted to 0.4MPa and liquid is adjusted to 0.3MPa. Stirring stage Start drive unit 200: Connect the servo motor power supply, start the servo driver, and the rotating rod 300 drives the stirring blade 700 to rotate at the preset speed; observe the material flow status, and if material accumulation occurs through the observation window of the mixing tank, the speed can be increased appropriately; Material removal: During the mixing process, the air / liquid delivery pipe 500 is turned on every 10-15 minutes for 30-60 seconds. Air / liquid is sprayed through the exhaust and drainage port 600 to clean the material stuck to the mixing blades 700. If the material viscosity is extremely high, the cleaning interval can be shortened. Process monitoring: Monitor the operating temperature of the device in real time. The temperature of the servo motor should not exceed 60℃ and the temperature of the bearing should not exceed 70℃. If the temperature is too high, stop stirring and check for jamming, such as material clumping causing increased resistance of the stirring blades. End and Cleanup Phase Stop mixing: After the materials are mixed, turn off the servo motor. After the rotor 300 has completely stopped rotating, open the discharge valve at the bottom of the mixing tank to discharge the mixed materials. Thorough cleaning: After the material is discharged, keep the air and liquid inlet pipes 500 open and deliver cleaning solvent into the rotating rod 300. Rinse the stirring blades 700 and the inner wall of the reaction cylinder 100 through the exhaust and liquid outlet 600 to ensure that there is no residual material. Shutdown inspection: Turn off the external gas station / water pump, disconnect the main power supply of the device, and check the agitator blades 700, gears, and bearings for wear. Replace any damaged parts promptly.

[0030] This invention utilizes the exhaust and liquid discharge port 600 on the rotating rod 300, combined with the gas or liquid introduced through the air inlet and liquid inlet pipe 500 connected to an external gas station or water pump, to efficiently blow off materials adhering to the stirring blades 700, allowing them to participate in the mixing operation. This solves the problem in existing stirring structures for reactors where materials, especially high-viscosity and strong-adhesion materials such as polymers and pastes, easily adhere to the surface of the stirring blades 700 during stirring. Existing structures lack targeted cleaning mechanisms, leading to material adhesion, which not only wastes raw materials but also reduces the effective contact area of ​​the stirring blades 700, resulting in uneven mixing and affecting the quality of the final product.

[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A stirring structure for a reaction vessel, wherein the stirring structure is disposed inside a stirring tank, characterized in that: The device includes a reaction cylinder (100) located inside a mixing tank. Inside the reaction cylinder (100) is a rotating rod (300) that is connected to a drive unit (200). The rotating rod (300) is hollow. A rotating component (400) is located on the axis of the rotating rod (300). Inside the rotating component (400) is an air inlet and liquid inlet pipe (500) that is connected to an external gas station or water pump. Multiple exhaust and liquid outlets (600) are provided on the outer wall of the rotating rod (300). A stirring blade (700) is provided on the outer side of the rotating rod (300).

2. The stirring structure for a reaction vessel as described in claim 1, characterized in that: The stirring blade (700) is a spiral conveyor blade.

3. The stirring structure for a reaction vessel as described in claim 1, characterized in that: The driving component (200) is a servo motor. The output shaft of the servo motor is provided with a drive shaft (210). The end of the drive shaft (210) is provided with a drive gear (220). The upper part of the rotating rod (300) is provided with a driven gear (240) that meshes with the drive gear (220).

4. The stirring structure for a reaction vessel as described in claim 3, characterized in that: The driven gear (240) is sleeved and welded to the outer wall of the rotating rod (300).

5. The stirring structure for a reaction vessel as described in claim 1, characterized in that: The reaction vessel (100) includes a guide bucket (110) disposed inside the stirring tank and a limiting bucket (120) disposed below the guide bucket (110).

6. The stirring structure for a reaction vessel as described in claim 5, characterized in that: The bottom of the rotating rod (300) is provided with a bearing, and the outer ring of the bearing is fixed to the inner wall of the limiting cylinder (120) by the connecting frame (800).

7. The stirring structure for a reaction vessel as described in claim 5, characterized in that: The guide bucket (110) has a structure where the upper opening is larger than the lower opening.

8. The stirring structure for a reaction vessel as described in claim 1, characterized in that: The air inlet and liquid inlet pipe (500) is a stainless steel pipe.

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