A vertical stainless steel reaction kettle

Abstract

The application belongs to the technical field of reaction kettles, and particularly relates to a vertical stainless steel reaction kettle, which comprises a kettle body, a separation cover fixedly connected to the top of the inner side of the kettle body, a sliding connection hole formed in the bottom of the separation cover, a first sealing ring clamped on the inner wall of the sliding connection hole, a stirring shaft slidably connected to the sliding connection hole through the first sealing ring, and a transmission groove formed in the top end of the stirring shaft; a driving device is installed on the top of the kettle body, a driving shaft is fixedly connected to the output shaft of the driving device, a spline is arranged on the shaft surface of the driving shaft, and the driving shaft is slidably connected to the transmission groove through the spline; in the application, the downward guiding of the material by the first spiral blade and the upward pushing of the bottom material by the inclined paddle blade are combined with the lifting movement of the stirring shaft driven by the hydraulic cylinder and the first spring to realize the up-and-down convection circulation of the material in the kettle body, effectively prevent the deposition, eliminate the stirring dead zone, and improve the space coverage capacity of the first spiral blade.

Description

Technical Field

[0001] This invention belongs to the field of reaction vessel technology, specifically a vertical stainless steel reaction vessel. Background Technology

[0002] Vertical stainless steel reactors are core reaction equipment in industries such as chemical, pharmaceutical, and food processing, used to complete various physical mixing or chemical reactions. They adopt a vertical cylindrical structure and are mainly composed of a reactor body, stirring system, heat transfer system, and sealing device.

[0003] Existing technologies disclose several invention patents in the field of reaction vessel technology. Among them, invention patent with publication number CN109225070B discloses a vertical reaction vessel, belonging to the field of chemical equipment technology. It includes a vessel body, a vessel cover, and a stirring shaft. A first gear is sleeved on the stirring shaft. A power device is installed on the vessel cover. The power device includes a motor fixedly connected to the vessel cover by a fixing member and a second gear sleeved on the motor output shaft. The second gear meshes with the first gear, and the second gear is connected to a third gear disposed in the reaction chamber via a transmission shaft. A rotating sleeve is sleeved on the stirring shaft, and the rotating sleeve is rotatably connected to the stirring shaft via a first bearing. A [missing information - likely a type of equipment] is sleeved on the upper part of the rotating sleeve. The vertical reactor is designed to address the technical problems of current reactors where, after adding solid materials, the solid materials fall in the same direction, which is not conducive to the rapid fusion of materials and solutions. Furthermore, the current material guiding devices have poor uniform distribution effects and high production costs. Existing vertical stainless steel reactors still have certain limitations during operation. Because the stirring position of their built-in stirring system is fixed, there are dead zones in some areas inside the reactor. Especially for particulate material systems, materials tend to settle at the bottom of the reactor, which affects the uniformity of material mixing and the final reaction effect.

[0004] Based on this, the present invention designs a vertical stainless steel reactor to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a vertical stainless steel reactor. This invention primarily addresses the limitations of existing vertical stainless steel reactors during operation. The fixed stirring position of their built-in stirring system leads to dead zones in certain areas within the reactor, especially in particulate material systems where materials tend to accumulate at the bottom, thus affecting the uniformity of mixing and the final reaction effect.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a vertical stainless steel reactor, including a reactor body; a partition cover is fixedly connected to the top of the inner side of the reactor body, a sliding hole is opened at the bottom of the partition cover, a first sealing ring is snapped on the inner wall of the sliding hole, a stirring shaft is slidably connected in the sliding hole through the first sealing ring, and a transmission groove is opened at the top of the stirring shaft. A drive device is installed on the top of the vessel body. The output shaft of the drive device is fixedly connected to a drive shaft. A spline is provided on the shaft surface of the drive shaft. The drive shaft is slidably connected to the transmission groove through the spline. The top of the stirring shaft is rotatably connected to a lifting plate. The stirring shaft is slidably mounted on the inner wall of the partition cover via the lifting plate. A first spring is sleeved around the stirring shaft. The bottom of the lifting plate is elastically supported by the first spring and the inner bottom of the partition cover. Multiple hydraulic cylinders are installed on the top of the vessel body. The telescopic ends of the hydraulic cylinders are located on the top of the lifting plate. The stirring shaft has a first spiral blade wound around its axial surface, and an inclined blade is provided on the axial surface of the stirring shaft corresponding to the inner bottom of the vessel. An annular plate is embedded inside the vessel body corresponding to the top of the first helical blade. The bottom of the annular plate is connected to a plurality of first propeller shafts arranged in an annular array. A second helical blade is wound around the plurality of first propeller shafts. The bottom ends of the plurality of first propeller shafts are driven by a driving device and move in a circular motion together.

[0007] Preferably, each of the hydraulic cylinders has a clamping groove at its telescopic end, and a ball bearing is rolled in the clamping groove. The telescopic ends of multiple hydraulic cylinders abut against the top of the lifting plate through the ball bearing.

[0008] Preferably, each of the clamp grooves is filled with lubricating oil, and a second spring is connected to the top of the inner side of the clamp groove, with the bottom end of the second spring abutting against the spherical surface of the ball.

[0009] Preferably, multiple vibrators are installed on the top of the lifting plate.

[0010] Preferably, the first spiral blade is provided with a plurality of micropores at uniform intervals.

[0011] Preferably, an annular opening is provided at the bottom of the outer wall of the vessel, and multiple bridging plates are connected to the outer wall of the vessel corresponding to the position of the annular opening. Sealing grooves are provided at the top and bottom of the inner side of the annular opening. The driving device includes a toothed ring rotatably connected to the two sealing grooves and the annular opening. A second sealing ring is provided between the toothed ring and the two sealing grooves. The bottom ends of the multiple first paddle shafts are all located at the top of the toothed ring. A wheel axle is rotatably connected to the bottom of the outer wall of the vessel. A gear that meshes with the gear ring is fixedly sleeved on the wheel axle. A frame is fixedly connected to the bottom of the outer wall of the vessel. A motor is installed on the frame. The output shaft of the motor is fixedly connected to the bottom end of the wheel axle.

[0012] Preferably, a second propeller shaft is fixedly connected to the top of the toothed ring for each first propeller shaft, the multiple second propeller shafts are arranged in a circumferential direction, and the arc of the multiple second propeller shafts is greater than the arc of the multiple first propeller shafts. A third spring is sleeved on the opposite first propeller shafts and second propeller shafts.

[0013] Preferably, a second protrusion is fixedly connected to the bottom end of each of the first propeller shafts, and a first protrusion is connected to the top end of the second propeller shaft, with the hemispherical surface of the first protrusion abutting against the hemispherical surface of the second protrusion.

[0014] Preferably, a sleeve is fixedly sleeved on the first propeller shaft, and the first protrusion and the second protrusion are both restricted to the inside of the sleeve. A pad is fixedly sleeved on the second propeller shaft, and the bottom of the sleeve is slidably connected to the top of the pad.

[0015] Preferably, a bottom cover is installed at the bottom of the vessel corresponding to the discharge port, and a limiting groove is formed on the top of the bottom cover, and the bottom end of the stirring shaft is rotatably sleeved in the limiting groove.

[0016] The beneficial effects of this invention are as follows: 1. In this invention, the material is guided downward by the first spiral blade and pushed upward by the inclined blade. Combined with the lifting and lowering motion of the stirring shaft driven by the hydraulic cylinder and the first spring, the material is circulated vertically in the reactor body, which effectively prevents sedimentation, eliminates the stirring dead zone, and improves the spatial coverage of the first spiral blade.

[0017] 2. In this invention, rolling contact of balls is used instead of sliding friction, and with the elastic support of lubricating grease and a second spring, wear is significantly reduced, shock is absorbed, clearance is automatically compensated, and transmission efficiency, accuracy and service life of key components are improved.

[0018] 3. In this invention, the vibration generated by the vibrator is transmitted to the stirring blades, which breaks up material agglomeration, promotes the discharge of air bubbles, prevents material adhesion, and reduces stirring resistance, thereby reducing driving energy consumption while improving dispersion uniformity.

[0019] 4. In this invention, the micropores on the first helical blade achieve effective shearing at a lower rotation speed, refining agglomerated particles and enhancing micro-mixing. Combined with the counter-rotating second helical blade, it guides the wall material to flow upward, forming a complete axial circulation and reducing wall deposition and dead zones.

[0020] 5. In this invention, the third spring causes the first propeller shaft to elastically deviate from the axis, breaking the dead zone of the symmetrical flow field. The protruding structure that deviates from the arc enhances vibration transmission, and the limiting groove at the bottom of the stirring shaft constrains radial oscillation, ensuring motion accuracy, stability and system reliability. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below; Figure 3 This is a cross-sectional view of the present invention. Figure 4 This is a cross-sectional structural schematic diagram from another perspective of the present invention; Figure 5 This is a schematic diagram of the structure of the invention after disassembly; Figure 6 This is the present invention. Figure 5 A schematic diagram of the three-dimensional structure viewed from below; Figure 7 This is a top view of the structure of the plurality of first protrusions and the plurality of second protrusions of the present invention; Figure 8 This is the present invention. Figure 3 Enlarged structural diagram at point A; Figure 9 This is a schematic diagram of the clamp groove in cross-section in this invention; Figure 10 This is the present invention. Figure 4 Enlarged structural diagram at point B; Figure 11 This is the present invention. Figure 3 Enlarged structural diagram at point C; Figure 12 This is a schematic diagram of the structure of the first propeller shaft and the second propeller shaft in this invention.

[0023] In the diagram: 1. Vessel body; 2. Separator cover; 3. Sliding joint hole; 4. First sealing ring; 5. Stirring shaft; 6. Drive device; 7. Drive shaft; 8. Spline; 9. Transmission groove; 10. Hydraulic cylinder; 11. Lifting plate; 12. First spring; 13. First spiral blade; 14. Inclined blade; 15. Clamp groove; 16. Ball bearing; 17. Second spring; 18. Vibrator; 19. Annular opening; 20. Bridge plate; 21. Sealing groove; 22. Second sealing ring; 23. Gear ring; 24. Annular plate; 25. Second spiral blade; 26. Micropore; 27. Wheel and axle; 28. Gear; 29. ​​Frame; 30. Motor; 31. First propeller shaft; 32. Second propeller shaft; 33. First protrusion; 34. Second protrusion; 35. Third spring; 36. Pad; 37. Shell; 38. Bottom cover; 39. Limiting groove. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 10 As shown, a vertical stainless steel reactor includes a reactor body 1; a partition cover 2 is fixedly connected to the top of the inner side of the reactor body 1, a sliding joint hole 3 is opened at the bottom of the partition cover 2, a first sealing ring 4 is snapped on the inner wall of the sliding joint hole 3, a stirring shaft 5 is slidably connected in the sliding joint hole 3 through the first sealing ring 4, and a transmission groove 9 is opened at the top of the stirring shaft 5. A drive device 6 is installed on the top of the vessel body 1. The output shaft of the drive device 6 is fixedly connected to a drive shaft 7. A spline 8 is provided on the shaft surface of the drive shaft 7. The drive shaft 7 is slidably connected to the transmission groove 9 through the spline 8. The top of the stirring shaft 5 is rotatably connected to the lifting plate 11. The stirring shaft 5 is slidably mounted on the inner wall of the partition cover 2 through the lifting plate 11. The outer periphery of the stirring shaft 5 is fitted with a first spring 12. The bottom of the lifting plate 11 is elastically supported by the inner bottom of the partition cover 2 through the first spring 12. Multiple hydraulic cylinders 10 are installed on the top of the vessel body 1. The telescopic end of the hydraulic cylinder 10 is located on the top of the lifting plate 11. A first spiral blade 13 is wound and connected on the axial surface of the stirring shaft 5, and an inclined blade 14 is provided on the axial surface of the stirring shaft 5 corresponding to the inner bottom of the vessel body 1. Inside the vessel body 1, an annular plate 24 is embedded at the top of the first spiral blade 13. The bottom of the annular plate 24 is connected to a plurality of first propeller shafts 31 arranged in an annular array. The plurality of first propeller shafts 31 are connected together with second spiral blades 25. The bottom ends of the plurality of first propeller shafts 31 are driven by a drive device and move together in a circular motion.

[0026] During operation, the drive unit is started. The output of the drive unit, via the drive shaft 7 and spline 8, transmits torque to the stirring shaft 5 through the transmission groove 9. The stirring shaft 5 drives the first spiral blade 13 to stir the material inside the vessel 1 and guide the material to flow downwards within the vessel 1. During this process, the stirring shaft 5 also stirs the material at the bottom of the vessel 1 via the inclined blades 14, causing the material deposited at the bottom of the vessel 1 to flow upwards. During this stirring process, multiple hydraulic cylinders 10 are activated to simultaneously perform telescopic movements. When the multiple hydraulic cylinders 10 extend, their… The telescopic end pushes the lifting plate 11 downward, causing it to slide down along the inner wall of the partition cover 2. Simultaneously, it pushes the stirring shaft 5 downward within the sliding joint hole 3, compressing the first spring 12 and causing it to elastically deform. This design causes the inclined blade 14 to approach the bottom of the vessel body 1, lifting the sediment at the bottom, which is then conveyed upward by the second spiral blade 25, thus incorporating the material into the circulation. When the multiple hydraulic cylinders 10 retract, the downward pressure exerted by their telescopic ends on the top of the lifting plate 11 gradually decreases, and the first spring 12 begins its elastic reset, thereby allowing the material to pass through the lifting plate... 11. The stirring shaft 5 is pushed to slide upward within the sliding joint hole 3. The lifting and lowering action of the stirring shaft 5 drives the first spiral blade 13 and the inclined blade 14 to rise and fall synchronously inside the vessel body 1. The inclined blade 14 pushes the material at the bottom of the vessel body 1 upward, and the first spiral blade 13 guides the material downward, realizing the circulation of material between the first spiral blade 13 and the second spiral blade 25. This effectively prevents material from settling at the bottom of the vessel and eliminates the stirring dead zone. Utilizing the synergistic action of the hydraulic cylinder 10 and the first spring 12, the stirring shaft 5 is driven to rotate and move up and down simultaneously. The first spiral blade 13 and the inclined blade 14 can stir materials at different heights, significantly improving their spatial coverage. The spline 8 on the drive shaft 7 slides into the transmission groove 9 at the top of the stirring shaft 5, allowing the stirring shaft 5 to move axially while continuously transmitting torque. The structure is simple and the power transmission is stable. The first spring 12 stores energy when the hydraulic cylinder 10 extends and automatically releases energy when the hydraulic cylinder 10 retracts to push the stirring shaft 5 to reset. The lifting and returning stroke can be completed without additional power, resulting in smooth movement and low energy consumption.

[0027] like Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 and Figure 10As shown, each hydraulic cylinder 10 has a clamping groove 15 at its telescopic end, and a ball bearing 16 is rolled in the clamping groove 15. The telescopic ends of multiple hydraulic cylinders 10 are jointly abutted against the top of the lifting plate 11 through the ball bearing 16.

[0028] During operation, while controlling the extension and retraction of multiple hydraulic cylinders 10, the top of the lifting plate 11 remains in contact with the bottom of multiple balls 16, thanks to the elastic support of the first spring 12. Since each ball 16 can roll freely within its corresponding clamping groove 15, frictional wear between the extension / retraction end of the hydraulic cylinder 10 and the lifting plate 11 is effectively reduced. The rolling contact of the balls 16 within the clamping groove 15 replaces traditional sliding friction, significantly reducing direct wear between the extension / retraction end of the hydraulic cylinder 10 and the lifting plate 11, thus improving the service life of key components. The rolling friction coefficient is much lower than the sliding friction coefficient, making the lifting plate 11 move more smoothly following the extension / retraction end of the hydraulic cylinder 10. Under the elastic support of the first spring 12, the top of the lifting plate 11 remains in contact with the bottom of the balls 16, eliminating gaps and ensuring precise transmission of the extension / retraction motion of the hydraulic cylinder 10. This improves the responsiveness of the lifting control of the stirring shaft 5. The reduced resistance from rolling friction lowers the driving load of the hydraulic cylinder 10, thereby reducing system energy loss and improving overall transmission efficiency.

[0029] like Figure 9 As shown, each clamp groove 15 is filled with lubricating oil, and a second spring 17 is connected to the top of the inner side of the clamp groove 15. The bottom end of the second spring 17 abuts against the spherical surface of the ball 16.

[0030] During operation, each clamp groove 15 is filled with lubricating grease, and the top of the inner side of each clamp groove 15 is elastically supported by a second spring 17 for the internal balls 16. The lubricating grease in the clamp groove 15 continuously lubricates the surface and rolling contact surface of the balls 16, further reducing the rolling friction resistance between the balls 16 and the clamp groove 15 and between the balls 16 and the lifting plate, reducing wear during long-term operation. The elastic support force applied to the balls 16 by the second spring 17 ensures that the balls 16 always maintain stable contact with the top of the lifting plate 11, eliminating the shaft wear that may occur due to machining tolerances or wear. To ensure transmission accuracy, the elasticity of the second spring 17 absorbs the instantaneous impact and vibration generated during the extension and retraction of the hydraulic cylinder 10, preventing rigid collisions between the ball 16 and the clamp groove 15, thus making the movement of the lifting plate 11 smoother. When the ball 16 or the contact surface experiences slight wear, the second spring 17 can automatically extend to compensate for the wear, continuously providing stable elastic pressure and extending the maintenance cycle. The lubricating grease, in conjunction with the elastic support of the second spring 17, reduces frictional heat generation and avoids abnormal wear caused by insufficient lubrication, significantly improving the overall durability of the clamp groove 15 and the ball 16.

[0031] like Figure 4 , Figure 5 and Figure 10 As shown, multiple vibrators 18 are installed on the top of the lifting plate 11.

[0032] During operation, the vibrator 18 is activated, generating vibrations. Since the bottom of the lifting plate 11 is elastically supported by the first spring 12, the vibrations generated by the vibrator 18 are transmitted through the lifting plate 11 and then through the lifting plate 11 and the stirring shaft 5 to the first spiral blade 13 and the inclined blade 14, respectively. During the stirring process, the first spiral blade 13 and the inclined blade 14 release the received vibrations into the material. While rotating and stirring, the first spiral blade 13 and the inclined blade 14 release vibrational energy, causing micro-amplitude relative motion between the material particles, effectively breaking up material agglomeration and significantly improving the dispersion of solid particles in the liquid phase. Uniformity: After the vibration energy is transmitted to the first stirring blade, the surface of the first stirring blade will generate micro-vibration, which can effectively prevent the adhesion of high viscosity or easily adhering materials to the surface of the first stirring blade and the inner wall of the vessel 1, reduce material residue, and facilitate subsequent cleaning. The vibration can accelerate the coalescence and floating discharge of tiny bubbles inside the material, reduce the loss of effective reaction volume caused by bubble retention, and is especially suitable for control scenarios that require degassing or gas-liquid reaction. The vibration energy can reduce the apparent frictional resistance between the material and the first stirring blade, making the material easier to push and shear, and can obtain better flow effect at the same stirring speed, thereby reducing the energy consumption of the driving equipment to a certain extent.

[0033] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 10 As shown, a plurality of micropores 26 are evenly spaced on the first helical blade 13.

[0034] During operation, multiple micropores 26 with a diameter of 10-20 mm are formed on the first helical blade 13. These micropores can exert a shearing effect on the material flowing downward along its surface. When the material flows through the micropores 26, it is subjected to shearing force, which refines the agglomerated particles or droplets in the fluid, significantly improving the mixing uniformity of the material at the microscale. This is beneficial for improving the reaction rate and product consistency. The presence of micropores 26 can disrupt the laminar flow state of the material and induce local turbulence, thereby enhancing the mass transfer and heat transfer between different flow layers and effectively reducing the formation of dead zones in the flow inside the vessel 1. Compared with the shearing method that relies on the edge of the first helical blade 13 at a high speed, the micropores 26 can achieve effective shearing at a lower speed. Under the premise of obtaining the same dispersion effect, the speed requirement of the stirring shaft 5 can be reduced, reducing the driving energy consumption. For powder suspension systems or emulsion systems that are prone to agglomeration, the shearing effect generated by the micropores 26 can continuously break down soft agglomerates in the material, maintain the stable dispersion state of the system, and provide a more uniform material environment for the reaction.

[0035] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 11 As shown, an annular opening 19 is provided at the bottom of the outer wall of the vessel body 1. Multiple bridging plates 20 are connected to the outer wall of the vessel body 1 at the position corresponding to the annular opening 19. Sealing grooves 21 are provided at the top and bottom of the inner side of the annular opening 19. The driving device includes a toothed ring 23 rotatably connected to the two sealing grooves 21 and the annular opening 19. A second sealing ring 22 is provided between the toothed ring 23 and the two sealing grooves 21. The bottom ends of multiple first paddle shafts 31 are all located at the top of the toothed ring 23. A wheel axle 27 is rotatably connected to the bottom of the outer wall of the vessel body 1. A gear 28 that meshes with a gear ring 23 is fixedly sleeved on the wheel axle 27. A frame 29 is fixedly connected to the bottom of the outer wall of the vessel body 1. A motor 30 is installed on the frame 29. The output shaft of the motor 30 is fixedly connected to the bottom end of the wheel axle 27.

[0036] During operation, the control motor 30 runs, and its output drives the gear 28 to rotate via the wheel shaft 27. This, in turn, drives the gear ring 23 to rotate within the annular opening 19. The gear ring 23 drives the second spiral blades 25 to rotate via multiple first propeller shafts 31. The rotation direction of the second spiral blades 25 is opposite to that of the first spiral blades 13, thus guiding the material near the inner wall of the vessel 1 to flow upward. The upward flow of the material near the inner wall of the vessel 1 guided by the second spiral blades 25 complements the downward flow of the material in the center guided by the first spiral blades 13, creating a complete axial convection circulation. This ensures that the material in the vessel participates in the flow from the center to the edge, significantly eliminating the dead zone in the stirring. The second spiral blades 25 do not directly contact the inner wall of the vessel 1, maintaining a gap of 5-10 mm. This gap can disturb the flow of material near the inner wall of the vessel 1, effectively reducing the adhesion and deposition of high-viscosity or easily fouling materials on the wall surface, thus improving the uniformity of the reaction. This design improves the efficiency of the vessel and reduces the difficulty of cleaning after production. By rotating the first spiral blade 13 and the second spiral blade 25 in opposite directions, strong turbulence and axial exchange can be generated at a low speed. The upward flow of material near the inner wall and the upward push of the bottom inclined blade 14 work together to lift the solid particles at the bottom and edge of the vessel body 1, effectively preventing heavy phase solids from depositing at the bottom of the vessel and improving the solid suspension effect. The upper and lower layers of the second sealing ring 22 form an independent sealing barrier at each end of the axial direction of the toothed ring 23, effectively preventing material leakage or external contaminants from entering the vessel body 1. The two layers of the second sealing ring 22 form symmetrical support and damping on the upper and lower sides of the toothed ring 23, which helps to maintain the axial alignment and radial stability of the toothed ring 23 during rotation, reduces local wear between the toothed ring 23 and the annular opening caused by tilting or vibration, and extends the service life of the second sealing ring 22 and the toothed ring 23.

[0037] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 11 and Figure 12 As shown, a second propeller shaft 32 is fixedly connected to the top of the toothed ring 23 corresponding to each first propeller shaft 31. The multiple second propeller shafts 32 are arranged in a circumferential direction, and the arc of the multiple second propeller shafts 32 is greater than the arc of the multiple first propeller shafts 31. A third spring 35 is sleeved on the opposite first propeller shafts 31 and second propeller shafts 32. The two ends of the third spring 35 are fixedly connected to the axial surfaces of the first propeller shafts 31 and second propeller shafts 32, respectively.

[0038] During operation, the gear ring 23, while making circular motion, drives multiple first propeller shafts 31 to move synchronously through multiple third springs 35 on multiple second propeller shafts 32. As the multiple first propeller shafts 31 encounter resistance when driving the second helical blades 25 to stir the material, the multiple first propeller shafts 31 will elastically deviate from the axis, thereby preventing the stirring dead zone that may be formed due to symmetrical circulation. The elastic deviation of the first propeller shafts 31 under the action of material resistance breaks the stable circulation loop or local stagnation area that may be formed due to symmetrical flow field, so that the material flow path is constantly changing, effectively avoiding the generation of dead zone. The elastic deviation motion adds extra degrees of freedom to the stirring system, so that the trajectory of the second helical blades 25 is no longer limited to a fixed circular path, thereby generating irregular disturbances, enhancing the turbulence degree and micro-mixing effect of the material. When the viscosity or resistance of the material is uneven, the third springs 35 allow the first propeller shafts 31 to produce flexible oscillation, absorbing part of the instantaneous impact load, reducing the impact of rigid transmission on the gear ring 23 and gear 28, and improving the smoothness of the transmission system.

[0039] like Figure 3 , Figure 4 , Figure 7 , Figure 11 and Figure 12 As shown, a second protrusion 34 is fixedly connected to the bottom end of each first propeller shaft 31, and a first protrusion 33 is connected to the top end of the second propeller shaft 32. The hemispherical surface of the first protrusion 33 abuts against the hemispherical surface of the second protrusion 34.

[0040] During operation, the bottom end of the first propeller shaft 31 abuts against the first protrusion 33 at the top of the second propeller shaft 32 via the second protrusion 34. The arc of the first protrusion 33 is offset from the arc of the second protrusion 34. When the first protrusion 33 and the second protrusion 34 rotate relative to each other, a squeezing action is generated between them. By setting the first protrusion 33 and the second protrusion 34 on mutually offset arcs, they do not slide concentrically when rotating relative to each other, but form a periodic squeezing and releasing action, thereby generating a regularly changing mechanical force. The periodic squeezing generated by the first protrusion 33 and the second protrusion 34 during relative rotation can more effectively transfer vibration energy to the first propeller shaft 31 and the second spiral blade 25, further enhancing the dispersion effect of the material during the mixing process. The number of first propeller shafts 31 is at least 3 and is an odd number. The fewer the number, the higher the randomness of its movement.

[0041] like Figure 3 , Figure 4 , Figure 7 , Figure 11 and Figure 12As shown, a housing 37 is fixedly sleeved on the first propeller shaft 31, and the first protrusion 33 and the second protrusion 34 are both restricted to the inside of the housing 37. A pad 36 is fixedly sleeved on the second propeller shaft 32, and the bottom of the housing 37 is slidably connected to the top of the pad 36.

[0042] During operation, as the first protrusion 33 and the second protrusion 34 rotate relative to each other, the first propeller shaft 31, supported by the elastic force of the third spring 35, always slides on the top of the pad 36 on the second propeller shaft 32 through the sleeve 37, thus maintaining its own stable movement and preventing deviation. Under the continuous elastic force of the third spring 35, the sleeve 37 always slides against the top of the pad 36, providing stable axial guidance for the first propeller shaft 31, effectively preventing axial deviation caused by eccentric compression, and ensuring the movement accuracy of the stirring shaft 5 system. The elastic force of the third spring 35 can buffer the periodic impact generated when the first protrusion 33 and the second protrusion 34 rotate relative to each other, making the sliding between the sleeve 37 and the pad 36 smoother. By preventing deviation, it ensures that the second spiral blade 25 always maintains the preset movement trajectory during rotation, avoiding the risk of uneven stirring or interference with the inner wall of the vessel 1 caused by axial offset.

[0043] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a bottom cover 38 is installed at the bottom of the vessel body 1 corresponding to the discharge port. A limiting groove 39 is opened on the top of the bottom cover 38, and the bottom end of the stirring shaft 5 is rotatably sleeved in the limiting groove 39.

[0044] During operation, as the stirring shaft 5 drives the first spiral blade 13 and the inclined blade 14 to rotate, its bottom end always rotates within the limiting groove 39 opened on the top of the bottom cover 38, thereby effectively improving the stability of the stirring shaft 5. The bottom end of the stirring shaft 5 is limited to rotating within the limiting groove 39, which effectively restrains the radial sway that may occur when the stirring shaft 5 rotates at high speed or changes in load, and avoids the aggravation of vibration or seal failure caused by shaft instability.

[0045] When in operation, the drive device is started. The output end of the drive device transmits torque to the stirring shaft 5 through the drive shaft 7 and spline 8 via the transmission groove 9. The stirring shaft 5 drives the first spiral blade 13 to stir the material inside the vessel 1 and guide the material to flow downward inside the vessel 1. During this process, the stirring shaft 5 also stirs the material at the bottom of the vessel 1 through the inclined blade 14, causing the material deposited at the bottom of the vessel 1 to flow upward. During the above stirring process, multiple hydraulic cylinders 10 are activated to perform synchronous telescopic movements: When multiple hydraulic cylinders 10 extend, their telescopic ends push the lifting plate 11 downward, causing the lifting plate 11 to slide downward along the inner wall of the partition cover 2. At the same time, the stirring shaft 5 is pushed downward so that it slides downward in the sliding hole 3, and the first spring 12 is compressed so that it undergoes elastic deformation. When multiple hydraulic cylinders 10 retract, the downward pressure exerted on the top of the lifting plate 11 by their extension and retraction ends gradually decreases, the first spring 12 begins to elastically reset, and then pushes the stirring shaft 5 to slide upward in the sliding hole 3 through the lifting plate 11. The lifting and lowering motion of the stirring shaft 5 drives the first spiral blade 13 and the inclined blade 14 to move up and down synchronously inside the vessel body 1. The inclined blade 14 pushes the material at the bottom of the vessel body 1 upward, and the first spiral blade 13 guides the material downward, realizing the circulation of the material between the first spiral blade 13 and the second spiral blade 25. This effectively prevents the material from settling at the bottom of the vessel and eliminates the stirring dead zone. The hydraulic cylinder 10 and the first spring 12 work together to drive the stirring shaft 5 to move up and down while rotating, so that the first spiral blade 13 and the inclined blade 14 can stir the material at different heights, significantly improving its spatial coverage. The spline 8 on the drive shaft 7 slides into the transmission groove 9 at the top of the stirring shaft 5, allowing the stirring shaft 5 to move up and down axially while continuously transmitting torque. The structure is simple and the power transmission is stable. The first spring 12 stores energy when the hydraulic cylinder 10 extends and automatically releases energy when it retracts to push the stirring shaft 5 to reset. The lifting and returning stroke can be completed without additional power, and the movement is smooth and the energy consumption is low. During the process of controlling the extension and retraction of multiple hydraulic cylinders 10, with the elastic support of the first spring 12, the top of the lifting plate 11 always remains in contact with the bottom of multiple balls 16. Since each ball 16 can roll freely in its clamp groove 15, the friction and wear between the extension and retraction end of the hydraulic cylinder 10 and the lifting plate 11 are effectively reduced. By using the rolling contact method of the balls 16 in the clamp groove 15 to replace the traditional sliding friction, the direct wear between the extension and retraction end of the hydraulic cylinder 10 and the lifting plate 11 is significantly reduced, and the service life of key components is improved. The rolling friction coefficient is much lower than the sliding friction coefficient, making the lifting plate 11 move more smoothly when following the extension and retraction end of the hydraulic cylinder 10. Under the elastic support of the first spring 12, the top of the lifting plate 11 always remains in contact with the bottom of the ball 16, eliminating gaps and ensuring the precise transmission of the extension and retraction movement of the hydraulic cylinder 10. This improves the responsiveness of the lifting control of the stirring shaft 5. The reduced resistance from rolling friction lowers the driving load of the hydraulic cylinder 10, thereby reducing system energy loss and improving overall transmission efficiency. Each clamp groove 15 is filled with lubricating grease, and the top of the inner side of each clamp groove 15 is elastically supported by the second spring 17 for the ball 16 inside. The lubricating grease filled in the clamp groove 15 can continuously lubricate the surface and rolling contact surface of the ball 16, further reducing the rolling friction resistance between the ball 16 and the clamp groove 15 and between the ball 16 and the lifting plate, and reducing wear during long-term operation. The second spring 17 applies elastic support force to the ball 16, ensuring that the ball 16 always maintains stable contact with the top of the lifting plate 11, eliminating axial clearance that may be caused by machining tolerances or wear, and ensuring transmission accuracy. The elasticity of the second spring 17 can absorb the instantaneous impact and vibration generated during the extension and retraction of the hydraulic cylinder 10, avoiding rigid collision between the ball 16 and the clamp groove 15, making the movement of the lifting plate 11 more stable. When the ball 16 or the contact surface experiences slight wear, the second spring 17 can automatically extend to compensate for the wear, continuously providing stable elastic pressure, extending the maintenance cycle. The lubricating grease, in conjunction with the elastic support of the second spring 17, reduces frictional heat generation and avoids abnormal wear caused by insufficient lubrication, significantly improving the overall durability of the clamp groove 15 and the ball 16. When the vibrator 18 is started, it generates vibration during operation. Since the bottom of the lifting plate 11 is elastically supported by the first spring 12, the vibration generated by the vibrator 18 can be transmitted through the lifting plate 11 and then through the lifting plate 11 and the stirring shaft 5 to the first spiral blade 13 and the inclined blade 14, respectively. During the stirring process, the first spiral blade 13 and the inclined blade 14 release the received vibration into the material. While rotating and stirring, they release vibrational energy, causing micro-amplitude relative motion between the material particles, effectively breaking down material agglomeration and significantly improving the uniformity of solid particle dispersion in the liquid phase. The vibrational energy is transmitted... After being delivered to the first spiral blade 13, the surface of the material is subjected to micro-vibration, which can effectively prevent the adhesion of high viscosity or easily adhering materials to the surface of the first spiral blade 13 and the inner wall of the vessel 1, reduce material residue, and facilitate subsequent cleaning. The vibration can accelerate the coalescence and floating discharge of tiny bubbles inside the material, reduce the loss of effective reaction volume caused by bubble retention, and is especially suitable for control scenarios that require degassing or gas-liquid reaction. The vibration energy can reduce the apparent frictional resistance between the material and the first spiral blade 13, making the material easier to push and shear, and achieving better flow effect at the same stirring speed, thereby reducing the energy consumption of the drive equipment to a certain extent. The multiple micropores 26 on the first spiral blade 13 can form a shearing effect on the material flowing downward along its surface. When the material flows through the micropores 26, it is subjected to shearing force, which refines the agglomerated particles or droplets in the fluid, significantly improves the mixing uniformity of the material at the microscale, and is beneficial to improving the reaction rate and product consistency. The presence of micropores 26 will disrupt the laminar flow state of the material and induce local turbulence, thereby enhancing the mass transfer and heat transfer between different flow layers and effectively reducing the formation of dead flow zones inside the vessel 1. Compared to the method of shearing by the edge of the first spiral blade 13 at high speed, the micropores 26 can achieve effective shearing at a lower speed. Under the premise of obtaining the same dispersion effect, the speed requirement of the stirring shaft 5 can be reduced, and the driving energy consumption can be reduced. For powder suspension or emulsion systems that are prone to agglomeration, the shearing effect generated by the micropores 26 can continuously break down soft agglomerates in the material, maintain the stable dispersion state of the system, and provide a more uniform material environment for the reaction. The motor 30 is controlled to run. The output end of the motor 30 drives the gear 28 to rotate through the wheel shaft 27, which in turn drives the gear ring 23 to make a circular motion in the annular opening 19. The gear ring 23 drives the second spiral blade 25 to rotate through multiple first propeller shafts 31. The rotation direction of the second spiral blade 25 is opposite to the rotation direction of the first spiral blade 13, thereby guiding the material near the inner wall of the vessel 1 to flow upward. The second spiral blade 25 guides the material near the inner wall of the vessel 1 to flow upward, complementing the first spiral blade 13 which guides the material in the center to flow downward, thus constructing a complete axial convection circulation. This allows the material in the vessel to participate in the flow from the center to the edge, significantly eliminating the stirring dead zone. The second spiral blade 25 does not directly contact the inner wall of the vessel 1, and the two maintain a gap of 5-10mm. This gap can disturb the material flow near the inner wall of the vessel 1, effectively reducing the adhesion and deposition of high-viscosity materials or easily scaled materials on the wall surface, which not only improves the uniformity of the reaction, but also reduces the difficulty of cleaning after production. By rotating in opposite directions with the first spiral blade 13 and the second spiral blade 25 set inside and outside, strong turbulence and axial exchange can be generated at a low speed. The upward material flow near the inner wall and the upward push of the bottom inclined blade 14 work together to lift the solid particles at the bottom and edge of the vessel body 1 upward, effectively preventing heavy phase solids from depositing at the bottom of the vessel and improving the solid suspension effect. During the circular motion of the toothed ring 23, multiple third springs 35 on multiple second propeller shafts 32 drive multiple first propeller shafts 31 to perform circular motion synchronously. Since the multiple first propeller shafts 31 will encounter resistance when driving the second spiral blades 25 on them to stir the material, the multiple first propeller shafts 31 will elastically deviate from the axis, thereby preventing the stirring dead zone that may be formed due to symmetrical circulation. The first propeller shaft 31 moves elastically away from the axis under the action of material resistance, breaking the stable circulation loop or local stagnation area that may be formed due to the symmetrical flow field, causing the material flow path to change continuously, and effectively avoiding the generation of dead zones. The elastic deviation motion adds an extra degree of freedom to the mixing system, so that the trajectory of the second helical blade 25 is no longer limited to a fixed circular path, thereby generating irregular disturbances and enhancing the turbulence and micro-mixing effect of the material. When the material viscosity or resistance is uneven, the third spring 35 allows the first propeller shaft 31 to oscillate flexibly, absorbing part of the instantaneous impact load, reducing the impact of rigid transmission on the gear ring 23 and gear 28, and improving the smoothness of the transmission system. The bottom end of the first propeller shaft 31 abuts against the first protrusion 33 at the top of the second propeller shaft 32 via the second protrusion 34. The arc of the first protrusion 33 is offset from the arc of the second protrusion 34. When the first protrusion 33 and the second protrusion 34 rotate relative to each other, a squeezing effect is generated between them. By setting the first protrusion 33 and the second protrusion 34 on mutually offset arc lines, the two do not slide concentrically when rotating relative to each other, but form a periodic squeezing and releasing, thereby generating a regularly changing mechanical force. The periodic compression generated by the first protrusion 33 and the second protrusion 34 during relative rotation can more effectively transfer vibration energy to the first propeller shaft 31 and the second spiral blade 25, further enhancing the dispersion effect of materials during the mixing process. During the relative rotation of the first protrusion 33 and the second protrusion 34, under the elastic support of the third spring 35, the first propeller shaft 31 always slides on the top of the pad 36 on the second propeller shaft 32 through the sleeve 37, thereby maintaining its own stable movement and not producing deviation. Under the continuous elastic support of the third spring 35, the sleeve 37 always slides against the top of the pad 36, providing a stable axial guide for the first paddle shaft 31, effectively preventing axial deviation caused by eccentric extrusion, and ensuring the motion accuracy of the stirring shaft 5 system. The elastic force of the third spring 35 can buffer the periodic impact generated when the first protrusion 33 and the second protrusion 34 rotate relative to each other, making the sliding between the sleeve 37 and the pad 36 smoother. By preventing skew, the second helical blade 25 is ensured to maintain the preset motion trajectory during rotation, thus avoiding the risk of uneven stirring or interference with the inner wall of the vessel 1 due to axial deviation. As the stirring shaft 5 drives the first spiral blade 13 and the inclined blade 14 to rotate, its bottom end always rotates within the limiting groove 39 opened at the top of the bottom cover 38, thereby effectively improving the stability of the stirring shaft 5's operation. The bottom end of the stirring shaft 5 is confined within the limiting groove 39 to rotate, which effectively restrains the radial sway that may occur when the stirring shaft 5 rotates at high speed or changes in load, and avoids aggravated vibration or seal failure caused by shaft instability.

[0046] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A vertical stainless steel reactor, comprising a reactor body (1); characterized in that: A partition cover (2) is fixedly connected to the top of the inner side of the vessel body (1). A sliding hole (3) is opened at the bottom of the partition cover (2). A first sealing ring (4) is snapped on the inner wall of the sliding hole (3). A stirring shaft (5) is slidably connected in the sliding hole (3) through the first sealing ring (4). A transmission groove (9) is opened at the top of the stirring shaft (5). A drive device (6) is installed on the top of the vessel body (1). The output shaft of the drive device (6) is fixedly connected to a drive shaft (7). A spline (8) is provided on the shaft surface of the drive shaft (7). The drive shaft (7) is slidably connected to the transmission groove (9) through the spline (8). The top of the stirring shaft (5) is rotatably connected to a lifting plate (11). The stirring shaft (5) is slidably mounted on the inner wall of the partition cover (2) through the lifting plate (11). A first spring (12) is sleeved around the stirring shaft (5). The bottom of the lifting plate (11) is elastically supported by the first spring (12) and the inner bottom of the partition cover (2). A plurality of hydraulic cylinders (10) are installed on the top of the vessel body (1). The telescopic end of the hydraulic cylinder (10) is located on the top of the lifting plate (11). The stirring shaft (5) has a first spiral blade (13) wound around its shaft surface, and an inclined blade (14) is provided on the shaft surface of the stirring shaft (5) corresponding to the inner bottom of the vessel body (1). Inside the vessel body (1), an annular plate (24) is embedded at the top of the first spiral blade (13). The bottom of the annular plate (24) is connected to a plurality of first propeller shafts (31) arranged in an annular array. A second spiral blade (25) is wound around the plurality of first propeller shafts (31). The bottom ends of the plurality of first propeller shafts (31) are driven by a driving device and move in a circular motion together.

2. A vertical stainless steel reactor according to claim 1, characterized in that: Each of the hydraulic cylinders (10) has a clamp groove (15) at its telescopic end. A ball (16) is rolled in the clamp groove (15). The telescopic ends of the multiple hydraulic cylinders (10) abut against the top of the lifting plate (11) through the ball (16).

3. A vertical stainless steel reactor according to claim 2, characterized in that: Each of the clamp grooves (15) is filled with lubricating oil, and a second spring (17) is connected to the top of the inner side of the clamp groove (15), with the bottom end of the second spring (17) abutting against the spherical surface of the ball (16).

4. A vertical stainless steel reactor according to claim 3, characterized in that: Multiple vibrators (18) are installed on the top of the lifting plate (11).

5. A vertical stainless steel reactor according to claim 4, characterized in that: The first spiral blade (13) is provided with a plurality of micropores (26) evenly spaced.

6. A vertical stainless steel reactor according to claim 5, characterized in that: The bottom of the outer wall of the vessel body (1) is provided with an annular opening (19). A plurality of bridge plates (20) are connected to the outer wall of the vessel body (1) corresponding to the position of the annular opening (19). The top and bottom of the inner side of the annular opening (19) are provided with sealing grooves (21). The driving device includes a toothed ring (23) rotatably connected to the two sealing grooves (21) and the annular opening (19). A second sealing ring (22) is provided between the toothed ring (23) and the two sealing grooves (21). The bottom ends of the plurality of first paddle shafts (31) are all located at the top of the toothed ring (23). A wheel axle (27) is rotatably connected to the bottom of the outer wall of the vessel body (1). A gear (28) that meshes with the gear ring (23) is fixedly sleeved on the wheel axle (27). A frame (29) is fixedly connected to the bottom of the outer wall of the vessel body (1). A motor (30) is installed on the frame (29). The output shaft of the motor (30) is fixedly connected to the bottom end of the wheel axle (27).

7. A vertical stainless steel reactor according to claim 6, characterized in that: The top of the toothed ring (23) is fixedly connected to a second propeller shaft (32) corresponding to each first propeller shaft (31). Multiple second propeller shafts (32) are arranged along the circumferential direction, and the arc of multiple second propeller shafts (32) is greater than the arc of multiple first propeller shafts (31). A third spring (35) is sleeved on the opposite first propeller shaft (31) and second propeller shaft (32). The two ends of the third spring (35) are fixedly connected to the axial surfaces of the first propeller shaft (31) and the second propeller shaft (32) respectively.

8. A vertical stainless steel reactor according to claim 7, characterized in that: Each of the first propeller shafts (31) has a second protrusion (34) fixedly connected to its bottom end, and the second propeller shaft (32) has a first protrusion (33) connected to its top end. The hemisphere of the first protrusion (33) abuts against the hemisphere of the second protrusion (34).

9. A vertical stainless steel reactor according to claim 8, characterized in that: A housing (37) is fixedly sleeved on the first propeller shaft (31), and the first protrusion (33) and the second protrusion (34) are both restricted to the inside of the housing (37). A pad (36) is fixedly sleeved on the second propeller shaft (32), and the bottom of the housing (37) is slidably connected to the top of the pad (36).

10. A vertical stainless steel reactor according to claim 9, characterized in that: The bottom of the vessel body (1) is fitted with a bottom cover (38) at the outlet. A limiting groove (39) is opened on the top of the bottom cover (38). The bottom end of the stirring shaft (5) is rotatably sleeved in the limiting groove (39).

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