Stirring driving device of reaction kettle

Abstract

The invention discloses a reaction kettle stirring driving device which comprises a stirring rod, one end of the stirring rod is rotatably connected with a sealing cover used for being fixedly connected with a reaction kettle, the sealing cover is fixedly connected to the reaction kettle and then matched with the reaction kettle to form a closed container, and the end, away from the sealing cover, of the stirring rod extends into the reaction kettle. The end, located in the sealing cover, of the stirring rod is connected with an axial magnetic flux rotor, an axial magnetic flux stator corresponding to the axial magnetic flux rotor is fixedly arranged on the outer side of the sealing cover, the axial magnetic flux stator generates a magnetic field when working and drives the axial magnetic flux rotor to rotate through the magnetic field, and the axial magnetic flux rotor drives the stirring rod to rotate when rotating. The axial magnetic flux rotor and the axial magnetic flux stator are mutually separated through a sealing cover, the sealing cover is fixedly provided with a sealing piece, the sealing piece is located between the reaction kettle and the sealing cover, the stirring rod penetrates through the sealing piece, and when the stirring rod rotates, the sealing piece is used for preventing materials in the reaction kettle from getting close to the axial magnetic flux rotor. The stirring device has the effect of improving the operation precision of the stirring device.

Description

Technical Field

[0001] The present invention relates to the field of motor drive structures, in particular to a stirring drive device for a reactor. Background Art

[0002] With the development of industries such as pharmaceuticals, petrochemicals, and environmental protection, the stirring of flammable and explosive media faces more stringent requirements. Stirred reactors must meet leak-free standards to prevent the ingress of foreign matter. Currently, magnetically driven stirred reactors are widely used in the industry. The power output and input are completely separated by a magnetic coupling, eliminating the leakage problem.

[0003] For related technologies, please refer to the Chinese patent with announcement number CN215586265U, which discloses a magnetically driven agitator, which includes a stirring assembly, the stirring assembly including a shell and a stirring paddle with one end rotatably connected to the shell and the other end extending out of the shell, the stirring paddle is located outside the shell and is covered with an isolation sleeve fixedly connected to the shell, and also includes a drive motor and a linkage assembly, the drive motor and the isolation sleeve are spaced apart, the linkage assembly includes an outer magnetic rotor coaxially fixedly connected to the output shaft of the drive motor and an inner magnetic rotor coaxially fixedly connected to the stirring paddle, the inner magnetic rotor is located in the isolation sleeve, and the outer magnetic rotor and the inner magnetic rotor are connected by magnetic transmission. The stirring paddle rotates in the shell and the isolation sleeve, and the shell and the isolation sleeve are isolated from the outside world, thereby reducing the occurrence of material leakage in the agitator.

[0004] Regarding the above-mentioned related technologies, in the actual working process, there will inevitably be a magnetic angle between the outer magnetic rotor and the inner magnetic rotor. When the load torque changes, the magnetic field force torque will also change, thereby reducing the operating accuracy of the stirring device. Summary of the Invention

[0005] In order to improve the operating accuracy of a stirring device, the present application provides a stirring drive device for a reactor.

[0006] The present application provides a stirring drive device for a reactor, which adopts the following technical solution: A stirring drive device for a reactor comprises a stirring rod, one end of which is rotatably connected to a sealing cover for being fixed to the reactor. After the sealing cover is fixed to the reactor, it cooperates with the reactor to form a closed container. The end of the stirring rod away from the sealing cover extends into the reactor. The end of the stirring rod located in the sealing cover is connected to an axial magnetic flux rotor. An axial magnetic flux stator corresponding to the axial magnetic flux rotor is fixed on the outside of the sealing cover. The axial magnetic flux stator generates a magnetic field when working and drives the axial magnetic flux rotor to rotate through the magnetic field. When the axial magnetic flux rotor rotates, it drives the stirring rod to rotate. The axial magnetic flux rotor and the axial magnetic flux stator are separated from each other by the sealing cover. The sealing cover is fixed with a seal. The seal is located between the reactor and the sealing cover. The stirring rod passes through the seal. When the stirring rod rotates, the seal is used to prevent the material in the reactor from approaching the axial magnetic flux rotor.

[0007] By adopting the above technical solution, the axial flux stator generates a magnetic field when energized, and this magnetic field drives the axial flux rotor within the sealing cover to rotate. Supported by the sealing cover, the axial flux rotor rotates, driving the stirring rod to rotate and stir within the reactor. During operation of the stirring shaft, the seal prevents the material within the reactor from penetrating the axial flux rotor, thereby reducing the probability of material corrosion affecting the circumferential flux rotor. The axial flux stator is located outside the sealing cover, making it easy to inspect and maintain. The sealing cover also keeps the reactor sealed and isolated from external materials, eliminating the risk of leakage. The axial flux stator and axial flux rotor are connected by electromagnetic induction, synchronizing the rotational speed of the axial flux rotor with the magnetic field of the axial flux stator, eliminating any speed difference. This allows for precise rotation angles and improves operating accuracy. By eliminating the need for a reduction gearbox and coupling, transmission efficiency is increased and the structure is more streamlined.

[0008] Optionally, the sealing cover includes a fixed part and a blocking disk, the fixed part is directly fixed to the reactor, the axial magnetic flux rotor is located in the fixed part and is rotatably connected to the fixed part, a support ring is fixed to the end of the fixed part away from the reactor, and an annular groove for placing the blocking disk is opened on the side of the support ring facing away from the reactor, the blocking disk is made of non-magnetic insulating material, and the support ring is also provided with a mounting ring for fixing the blocking disk, the mounting ring is located on the side of the support ring facing away from the reactor, the axial magnetic flux stator is located on the side of the blocking disk facing away from the axial magnetic flux rotor and is fixed to the mounting ring, the inner diameter of the support ring is larger than the outer diameter of the axial magnetic flux stator and the axial magnetic flux rotor, and the axial magnetic flux stator and the axial magnetic flux rotor both extend into the support ring and are close to the blocking disk.

[0009] By adopting the above technical solution, the support ring is connected to the reactor via a fixing portion, and the annular groove accommodates the barrier disc. The mounting ring cooperates with the support ring to secure the barrier disc, ensuring that the barrier disc remains stably within the annular groove. The barrier disc seals the support ring, keeping the reactor in a sealed state. The reactor and the sealing cover serving as the mounting structure are typically made of metal. The barrier disc, made of non-magnetic insulating material, is less likely to affect the electromagnetic induction between the axial flux rotor and the axial flux stator, thereby reducing hysteresis losses between the axial flux stator and the axial flux rotor.

[0010] Optionally, the blocking disc is made of ceramic, and a placement groove is provided on the side where the support ring and the mounting ring are close to each other, and a buffer pad is installed in each of the two placement grooves. The blocking disc is located between the two buffer pads and fits with the buffer pads, and the two buffer pads protrude from the corresponding placement grooves. The blocking disc does not contact the support ring and the mounting ring. The support ring is circumferentially provided with a limiting groove connected to the annular groove, and a flexible positioning ring is placed in the limiting groove. The blocking disc is located in the flexible positioning ring and fits with the flexible positioning disc. The mounting ring, the flexible positioning ring and the buffer pad cooperate with the annular cavity, and the annular cavity is filled with adhesive. The mounting ring is provided with a casting hole connected to the annular cavity, and the part of the blocking disc located in the annular cavity is covered with the adhesive.

[0011] By adopting the above technical solution, the ceramic material has excellent heat resistance and a long service life. The support ring and the mounting ring both accommodate and position the buffer pads through the placement grooves, allowing the two buffer pads to cooperate to clamp and position the barrier disc, while reducing the probability of damage to the barrier disc during the clamping process. The support ring fixes the flexible positioning through the limit groove, allowing the flexible positioning to position the barrier disc, while improving the installation accuracy of the barrier disc and reducing the probability of the barrier disc and support ring colliding and causing breakage. Adhesive is filled into the annular cavity through the pouring hole, and then the barrier disc, the mounting ring, and the support ring are fixed together by bonding, which helps to improve the installation stability and sealing effect of the barrier disc.

[0012] Optionally, the blocking disk is made of transparent glass, and reinforcement layers are bonded on both sides of the blocking disk along the axial direction, a flexible pressure ring is fixedly connected to the side of the mounting ring close to the blocking disk, a placement groove is circumferentially opened on the side of the support ring close to the mounting ring, a buffer ring is arranged in the placement groove, and the side of the blocking disk facing away from the mounting ring is fitted with the buffer ring, the buffer ring, the blocking disk and the inner wall of the annular groove cooperate to form an annular accommodating cavity, the accommodating cavity is filled with adhesive, the support ring is connected to the blocking disk by the adhesive, the mounting ring is detachably connected to the support ring by bolts, and the axial magnetic flux stator is located between the mounting ring and the blocking disk and is fixed to the mounting ring.

[0013] By adopting this technical solution, the reinforcement layer helps improve the structural strength of the barrier disc. Similarly, the support ring positions the buffer ring through the placement groove. After the adhesive is filled into the receiving cavity, the buffer ring helps prevent the adhesive from flowing toward the support ring shaft. The adhesive connects the barrier disc to the support ring, thereby improving the airtightness between the two discs. The mounting ring is detachable. When connected to the support ring, the mounting ring presses the barrier disc in place via a flexible pressure ring. The barrier disc is made of transparent glass, making it easy for operators to observe the status of the axial flux rotor from the outside.

[0014] Optionally, the sealing member includes an upper sealing ring, a lower sealing ring and a connecting ring, the connecting ring is fixedly connected to the fixing part, the upper sealing ring and the lower sealing ring are coaxially fixedly connected to the inner side of the connecting ring, and the upper sealing ring is located on the side of the lower sealing ring close to the axial magnetic flux rotor, a sealing ring is coaxially fixed to the inner side of the upper sealing ring, the stirring rod passes through the sealing ring and is rotatably connected to the sealing ring, the lower sealing ring is provided with an exhaust hole for the stirring rod to pass through along the axial direction, the exhaust hole diameter is larger than the stirring rod diameter, an annular space is left between the upper sealing ring and the lower sealing ring, a plurality of fan blades are fixedly connected to the outside of the stirring rod, and the plurality of fan blades are all located in the annular space. When the stirring rod rotates, the fan blades push the airflow in the annular space to flow in the direction of the upper sealing ring pointing to the lower sealing ring, the connecting ring and the upper sealing ring are provided with curved vents, one end of the vent is located at the lower end face of the upper sealing ring, and the other end is located at the lower end face of the connecting ring and is connected to the reactor.

[0015] By adopting the above technical solution, the connecting ring supports and secures the upper and lower sealing rings. The upper sealing ring is connected to the stirring shaft via the sealing ring, which prevents the material in the reactor from penetrating the axial magnetic flux rotor. When the stirring rod rotates, the fan blades rotate, causing the fan blades to discharge the airflow in the annular space through the exhaust holes, and the air in the reactor is drawn into the annular space through the vent holes. The curved design of the vent holes increases the difficulty of the material in the reactor entering the annular space with the airflow. The airflow flowing along the exhaust holes can prevent the material in the reactor from approaching the sealing ring, which helps to further improve the sealing effect.

[0016] Optionally, the vent holes are evenly arranged along the circumference of the connecting ring, a convex ring is fixedly connected to the lower end of the connecting ring, the vent holes extend to the side of the convex ring close to the axis of the stirring rod, a rotating ring is provided at the lower end of the lower sealing ring, the inner diameter of the rotating ring is larger than the diameter of the exhaust hole, a number of connecting rods are fixedly connected between the stirring rod and the rotating ring, the rotating ring is located on the inner side of the convex ring and has no contact with the convex ring, a number of impact plates are fixedly connected to the outer side of the rotating ring along the circumference, the impact plates are located between the convex ring and the rotating ring and are spirally arranged along the circumference of the rotating ring.

[0017] By adopting the above technical solution, the vent hole is located on the inner side of the convex ring, thereby reducing the probability of the material in the reactor splashing onto the end of the vent hole during the stirring process. When the stirring rod rotates, the connecting rod drives the rotating ring to rotate, and the rotating ring then drives all the impact plates to rotate. During the rotation of the impact plate, it passes through the end of the vent hole. When the material in the reactor flows toward the vent hole, the rotating impact plate is used to prevent the material from entering the vent hole. When the material contacts the impact plate and the rotating ring, the rotating impact plate and the rotating ring use centrifugal force to throw the material out, further reducing the probability of the material in the reactor entering the vent hole.

[0018] Optionally, the lower sealing ring is provided with a rotating groove along the circumference of the stirring rod, and a retaining ring is provided in the rotating groove, and the axial end face of the retaining ring is fitted with the inner wall of the rotating groove, and a gap is left between the inner wall of the retaining ring and the outer circle of the stirring rod, and a support rod is fixedly connected between the retaining ring and the stirring rod, and a plurality of abutting rods are slidably connected along the axial direction on the side of the retaining ring close to the stirring rod, and the same flexible blocking ring is fixedly connected between all the abutting rods, and an elastic part is provided between the retaining ring and the abutting rod. In the natural state of the elastic part, the abutting rod is pushed close to the stirring rod, so that the flexible blocking ring blocks the gap between the retaining ring and the stirring rod, and when the abutting rod is away from the stirring rod, the flexible blocking ring is separated from the stirring rod.

[0019] By adopting the above technical solution, the stirring rod supports and positions the baffle ring via the support rod, and when the stirring rod rotates, the support rod drives the baffle ring to rotate. In the initial state, when the stirring rod is stationary, the abutment rod, under the action of the elastic member, pushes the flexible blocking ring to fit the stirring rod, so that the flexible blocking ring blocks the gap between the baffle ring and the stirring rod, and the exhaust hole is in a closed state. When the stirring rod drives the baffle ring to rotate, the abutment rod drives the flexible blocking ring to separate from the stirring rod under the action of centrifugal force. At this time, the exhaust hole is in an unobstructed state, making it easier to use the airflow discharged along the exhaust hole to block the material.

[0020] Optionally, there are two groups of axial magnetic flux rotors and sealing covers, and the two sealing covers are respectively connected to two different reactors, and a stirring shaft connected to the axial magnetic flux rotor is also rotated inside the sealing cover. The axial magnetic flux stator is located between the two groups of axial magnetic flux rotors. When the axial magnetic flux stator is working, it drives the two groups of axial magnetic flux rotors to rotate synchronously.

[0021] By adopting the above technical solution, the same axial magnetic flux stator is used to drive the two axial magnetic flux rotors to rotate respectively, thereby simultaneously driving the stirring rods in the two reactors to rotate, which is beneficial to improving the working efficiency of the reactors.

[0022] Optionally, there are two groups of axial magnetic flux rotors and sealing covers, and the two groups of sealing covers are connected to the same reactor. Two groups of stirring rods corresponding to the axial magnetic flux rotors are arranged in the reactor, and the stirring rods are connected to the corresponding axial magnetic flux rotors. The axial magnetic flux stator is located between the two axial magnetic flux rotors and is used to drive the two axial magnetic flux rotors to rotate.

[0023] By adopting the above technical solution, the same axial magnetic flux stator is used to drive the two axial magnetic flux rotors to rotate, and then drive the two stirring rods to rotate in the same reactor, which is conducive to improving the stirring effect.

[0024] Optionally, a heat exchange ring is fixedly provided in the sealing cover, and the heat exchange ring is located at the end of the circumferential magnetic flux rotor away from the axial magnetic flux stator. A heat sink is fixedly provided on the outside of the sealing cover, and a circulation pipe is connected between the heat sink and the heat exchange ring. The circulation pipe is filled with heat exchange medium, and the heat sink is provided with a power pump for driving the heat exchange medium to circulate between the heat sink and the heat exchange ring.

[0025] By adopting the above technical solution, the power pump drives the heat exchange medium to flow along the circulation pipe, and the heat exchange medium exchanges heat with the axial magnetic flux rotor through the heat exchange ring. The heat exchange medium with increased temperature flows along the circulation pipe to the heat sink to dissipate heat and cool down, which is beneficial to reduce the temperature of the circumferential magnetic flux rotor during operation and improve the working stability of the circumferential magnetic flux rotor.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. When the axial flux stator is energized, it generates a magnetic field, and drives the axial flux rotor in the sealing cover to rotate through the magnetic field. Under the support of the sealing cover, the axial flux rotor drives the stirring rod to rotate and stir in the reactor. During the operation of the stirring shaft, the seal prevents the material in the reactor from penetrating into the axial flux rotor, thereby reducing the probability of material corrosion affecting the circumferential flux rotor. The axial flux stator is located outside the sealing cover, which is convenient for inspection and maintenance. The sealing cover keeps the reactor in a closed state and is not connected to external substances, so there is no risk of leakage. The axial flux stator and the axial flux rotor are connected by electromagnetic induction, so that the speed of the axial flux rotor is synchronized with the magnetic field of the axial flux stator, and there is no speed difference, so a precise rotation angle can be achieved, improving working accuracy. Since the reduction box and coupling are eliminated, the transmission efficiency is higher and the structure is more streamlined; 2. The agitator rod supports and positions the retaining ring via the support rod. When the agitator rod rotates, the support rod drives the retaining ring to rotate. Initially, when the agitator rod is stationary, the abutment rod, under the action of the elastic member, pushes the flexible blocking ring into contact with the agitator rod, causing the flexible blocking ring to seal the gap between the two. The vent is now closed. When the agitator rod drives the retaining ring to rotate, the abutment rod, under the action of centrifugal force, drives the flexible blocking ring away from the agitator rod. The vent remains unobstructed, allowing the airflow discharged through the vent to block the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0028] Figure 2 Schematic diagram of the internal structure of the reactor in Example 1.

[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of part A.

[0030] Figure 4 This is a schematic diagram intended to highlight the internal structure of the retaining ring.

[0031] Figure 5 It is a schematic diagram of the barrier disk installation structure in Example 2.

[0032] Figure 6 It is a schematic diagram of the internal structure of Example 3.

[0033] Figure 7 It is a schematic diagram of the internal structure of Example 4.

[0034] Explanation of reference numerals: 1, stirring rod; 11, fan blade; 12, rotating ring; 13, connecting rod; 14, impact plate; 2, sealing cover; 21, fixing portion; 22, blocking disk; 221, reinforcement layer; 23, supporting ring; 231, annular groove; 24, mounting ring; 241, pouring hole; 242, flexible pressure ring; 25, placement groove; 26, buffer pad; 27, limiting groove; 271, flexible positioning ring; 28, buffer ring; 3 , reactor; 4. axial flux rotor; 5. axial flux stator; 6. seal; 61. upper sealing ring; 611. sealing ring; 62. lower sealing ring; 621. exhaust hole; 63. connecting ring; 631. convex ring; 64. vent; 65. retaining ring; 651. support rod; 652. abutting rod; 653. flexible blocking ring; 654. elastic part; 7. heat exchange ring; 71. heat sink; 72. circulation pipe; 73. power pump. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0036] The embodiment of the present application discloses a stirring drive device for a reactor.

[0037] Example 1 Reference Figure 1 and Figure 2 A stirring drive device for a reactor 3 includes a sealing cover 2 and a stirring rod 1. The sealing cover 2 is used to connect to the reactor 3. One end of the stirring rod 1 is rotatably connected to the sealing cover 2, and the other end extends into the reactor 3. The sealing cover 2 includes a fixed portion 21 and a barrier disc 22. The fixed portion 21 is cylindrical and fixedly connected to the reactor 3 by welding. One end of the stirring rod 1 is located within the fixed portion 21 and is rotatably connected to the fixed portion 21.

[0038] Reference Figure 2 and Figure 3 A support ring 23 is coaxially fixed to the end of the fixed portion 21 away from the reactor 3. An axial magnetic flux rotor 4 is provided on the side of the support ring 23 near the reactor 3, and the axial magnetic flux rotor 4 is rotatably connected to the fixed portion 21. An annular groove 231 is defined on the side of the support ring 23 facing away from the reactor 3, and a mounting ring 24 corresponding to the annular groove 231 is provided on the end of the support ring 23 away from the reactor 3. In this embodiment, the mounting ring 24 is detachably connected to the support ring 23 by bolts.

[0039] Reference Figure 2 and Figure 3 The blocking disc 22 is located within the annular groove 231 and between the mounting ring 24 and the support ring 23. A placement groove 25 is defined on the side of the mounting ring 24 and the support ring 23 that is adjacent to each other. A buffer pad 26 made of an elastic material, such as rubber, is installed in each placement groove 25. The support ring 23 also has a circumferential limit groove 27 that communicates with the annular groove 231. A flexible positioning ring 271, also made of a deformable material, such as rubber or silicone, is installed in the limit groove 27.

[0040] Reference Figure 2 and Figure 3 The inner diameter of the flexible positioning ring 271 matches the outer diameter of the blocking disc 22. When the blocking disc 22 is located inside the flexible positioning ring 271, it abuts against the inner wall of the flexible positioning ring 271. The blocking disc 22 is made of a non-magnetic insulating material. In this embodiment, the blocking disc 22 is preferably made of ceramic. The two buffer pads 26 protrude from the corresponding placement grooves 25. When the blocking disc 22 is placed in the annular groove 231, the flexible positioning ring 271 and the buffer pads 26 in the annular groove 231 cooperate to support and limit the blocking disc 22. The blocking disc 22 does not contact the support ring 23 or the mounting ring 24, which helps reduce the probability of collision between the blocking disc 22 and the support ring 23.

[0041] Reference Figure 2 and Figure 3An adhesive is provided between the support ring 23 and the barrier disc 22. In this embodiment, the adhesive is preferably an inorganic, high-temperature-resistant adhesive. The adhesive is filled between the flexible positioning ring 271 and the buffer pad 26, connecting the barrier disc 22 and the support ring 23. The mounting ring 24 cooperates with the flexible positioning ring 271 to form another closed annular cavity on the side of the barrier disc 22 facing away from the reactor 3. The mounting ring 24 has a pouring hole 241 connected to the annular cavity. After the mounting ring 24 is connected to the support ring 23, the adhesive is refilled between the mounting ring 24 and the barrier disc 22 through the pouring hole 241, thereby improving the airtightness between the mounting ring 24 and the barrier disc 22.

[0042] Reference Figure 2 and Figure 3 The axial flux stator 5 is mounted on the side of the mounting ring 24 near the baffle disc 22. Both the axial flux stator 5 and the axial flux rotor 4 extend inside the support ring 23 and are close to the baffle disc. During operation, the axial flux stator 5 generates electromagnetic induction with the axial flux rotor 4, driving the axial flux rotor 4 to rotate. This rotation of the axial flux rotor 4 drives the agitator shaft, which in turn stirs the material within the reactor 3.

[0043] Reference Figure 2 and Figure 3 A heat exchange ring 7 is also disposed within the fixed portion 21. The heat exchange ring 7 is hollow and located on the side of the axial flux rotor 4 facing away from the mounting ring 24. A heat sink is fixedly disposed on the outside of the fixed portion 21. At least two circulation pipes 72 are connected between the heat sink and the heat exchange ring 7. The heat sink, circulation pipes 72, and heat exchange ring 7 are all filled with a heat exchange medium. The axial flux rotor 4 easily generates a large amount of heat during rotation, and heat exchange occurs between the heat exchange medium in the heat exchange ring 7 and the axial flux rotor 4.

[0044] Reference Figure 2 and Figure 3 Any one of the circulation pipes 72 is equipped with a power pump 73. When the power pump 73 is in operation, it drives the heat exchange medium to flow between the heat sink 71 and the heat exchange ring 7 along the circulation pipe. After the heat exchange medium exchanges heat with the axial magnetic flux rotor 4 in the heat exchange ring 7, it flows along the circulation pipe 72 to the heat sink 71, and transfers the heat to the air through the heat sink 71, thereby helping to reduce the operating temperature of the axial magnetic flux rotor 4 and improve the operating stability of the axial magnetic flux rotor 4.

[0045] Reference Figure 2 and Figure 3A seal 6 is also provided in the fixed part 21. The seal 6 is located on the side of the heat exchange ring 7 away from the axial magnetic flux rotor 4. The seal ring 611 includes an upper seal ring 61, a lower seal ring 62 and a connecting ring 63. The connecting ring 63 is located on the inner side of the fixed part 21 and is fixedly connected to the fixed part 21. The upper seal ring 61 and the lower seal ring 62 are both fixedly connected in the connecting ring 63 and are coaxial with each other. The upper seal ring 61 is located on the side of the lower seal ring 62 close to the heat exchange ring 7. The stirring shaft passes through the upper seal ring 61 and the lower seal ring 62 in sequence. The fixed part 21 supports the upper seal ring 61 and the lower seal ring 62 through the connecting ring 63.

[0046] Reference Figure 2 and Figure 3 A sealing ring 611 is coaxially fixed to the inner side of the upper sealing ring 61. The stirring rod 1 passes through the sealing ring 611 and is rotatably connected to the sealing ring 611. The sealing ring 611 is made of copper, which has a self-lubricating effect, which helps reduce friction between the stirring rod 1 and the sealing ring 611 during rotation. The lower sealing ring 62 has a vent hole 621. The stirring rod 1 passes through the vent hole 621 and does not contact the inner wall of the vent hole 621. A gap is left between the upper sealing ring 61 and the lower sealing ring 62, so that the upper sealing ring 61, the lower sealing ring 62, and the connecting ring 63 cooperate to form an annular space.

[0047] Reference Figure 2 and Figure 3 The stirring rod 1 is fixedly connected to a plurality of blades 11 along the circumferential direction, and the blades 11 are driven to rotate when the stirring rod 1 rotates. All the blades 11 are located in the annular space, and when the blades 11 rotate, the gas in the annular space is discharged from the exhaust hole 621. The connecting ring 63 and the upper sealing ring 61 are also provided with an air vent 64, one end of the air vent 64 is connected to the upper end of the annular space, and the other end extends to the lower end face of the connecting ring 63 and is connected to the reactor 3. The lower end of the connecting ring 63 is fixedly connected to a convex ring 631, and the end of the air vent 64 away from the annular space extends to the side of the convex ring 631 close to the stirring rod 1. During the stirring process, the material in the reactor 3 is moved away from the stirring rod 1 under the action of centrifugal force, which helps to reduce the probability of chemical materials flowing into the air vent 64.

[0048] Reference Figure 2 and Figure 3A rotating ring 12 is provided along the lower end of the stirring rod 1. The rotating ring 12 is located inside the convex ring 631, and a plurality of connecting rods 13 are fixedly connected between the rotating ring 12 and the convex ring 631. When the stirring rod 1 rotates, the rotating ring 12 is driven to rotate by the connecting rods 13. A plurality of impact plates 14 are fixedly connected along the circumference of the rotating ring 12 on the side facing away from its own axis. When the rotating ring 12 rotates, the impact plates 14 push the stirring material close to the convex ring 631 away. The impact plates 14 are spirally arranged along the circumference of the rotating ring 12, which helps to improve the impact plate 14's pushing effect on the material, further reducing the probability of material in the reactor 3 entering the vent 64. A filter can also be provided in the vent 64 to further reduce the probability of material entering the vent 64.

[0049] Reference Figure 2 and Figure 3 When the fan blades 11 rotate, the air flow in the annular space is discharged from the exhaust hole 621. At the same time, the air vent 64 sucks the air flow in the reactor 3 into the annular space to realize the circulation of the air flow. When the air flow is discharged along the exhaust hole 621, it pushes away the material close to the stirring rod 1, thereby reducing the probability of the material in the reactor 3 penetrating into the sealing ring 611.

[0050] Reference Figure 2 and Figure 4 The lower sealing ring 62 has a rotating groove connected to the exhaust hole 621 along the circumferential direction. The rotating groove is provided with a retaining ring 65. The end face of the retaining ring 65 along the axial direction is in contact with the inner wall of the rotating groove. A plurality of support rods 651 are fixedly connected between the retaining ring 65 and the stirring rod 1. When the stirring rod 1 rotates, the retaining ring 65 is driven to rotate by the support rods 651.

[0051] Reference Figure 2 and Figure 4 , leaving a gap between adjacent support rods 651, thereby keeping the exhaust hole 621 unobstructed. A flexible blocking ring 653 is provided on the side of the retaining ring 65 close to the stirring rod 1. The flexible blocking ring 653 is made of rubber or silicone and has elasticity. The retaining ring 65 is provided with a plurality of abutment rods 652 along the circumference. The abutment rods 652 are slidably connected to the retaining ring 65 along the diameter direction of the retaining ring 65. The retaining ring 65 is provided with a mounting groove for accommodating the abutment rods 652. One end of the abutment rod 652 close to the stirring rod 1 is fixedly connected to the outer edge of the flexible blocking ring 653. When the abutment rod 652 moves, it drives the flexible blocking ring 653 to deform. An elastic member 654 is provided between the abutment rod 652 and the baffle ring 65. The elastic member 654 is a spring. One end of the spring is fixedly connected to the baffle ring 65, and the other end is fixedly connected to the abutment rod 652. When the elastic member 654 is in a natural state, it pushes the abutment rod 652 close to the stirring rod 1. At this time, the flexible blocking ring 653 blocks the gap between the baffle ring 65 and the stirring rod 1.

[0052] Reference Figure 2 and Figure 4When the stirring rod 1 is in a stationary state, the elastic member 654 and the flexible blocking ring 653 are both in a natural state. At this time, the flexible blocking ring 653 blocks the gap between the retaining ring 65 and the stirring rod 1, thereby reducing the probability of the material in the reactor 3 penetrating through the exhaust hole 621 to the sealing ring 611 when the stirring rod 1 is in a stationary state. When the stirring rod 1 rotates, the retaining ring 65 rotates synchronously with the stirring rod 1. At this time, the abutting rod 652 drives the flexible blocking ring 653 away from the stirring rod 1 under the action of centrifugal force, so that the exhaust hole 621 is unblocked again, making it easier for the airflow to prevent the material in the reactor 3 from approaching the sealing ring 611. Through the three methods of the flexible blocking ring 653, the circulating airflow, and the sealing ring 611, the material in the reactor 3 is prevented from penetrating to the axial magnetic flux rotor 4 and causing pollution and interference to the axial magnetic flux rotor 4.

[0053] The implementation principle of Example 1 is as follows: the reactor 3 can be directly connected to the pipeline for conveying the reaction materials, and the reactor 3 itself is not connected to the outside world. During operation, the fixing part 21 and the barrier disc 22 cooperate to keep the reactor 3 in a closed state, and thus no material exchange occurs with the outside world, thereby reducing the risk of leakage of the reactor 3. The barrier disc 22 is made of non-magnetic inorganic material, which reduces the interference between the axial flux rotor 4 and the axial flux stator 5, and is conducive to improving the rotation efficiency of the axial flux rotor 4. The axial flux stator 5 and the axial flux rotor 4 are connected by electromagnetic induction, so that the rotation speed of the axial flux rotor 4 is synchronized with the magnetic field change of the axial flux stator 5, reducing the speed difference between the axial flux rotor 4 and the axial flux stator 5, which is conducive to improving the precise control of the rotation angle of the stirring rod 1 and improving the working accuracy of the reactor 3.

[0054] Example 2 Reference Figure 5 The difference between this embodiment and embodiment 1 is that the material and installation structure of the barrier disk 22 are different. In this embodiment, the barrier disk 22 is made of glass, which has transparent properties, and a reinforcing layer 221 for reinforcing the structure of the barrier disk 22 is adhered to both sides of the barrier disk 22. The reinforcing layer 221 is preferably a CPI film, which has good high temperature resistance and chemical stability.

[0055] In this embodiment, the mounting ring 24 is removably connected to the support ring 23 via bolts, and the buffer pad 26 and adhesive are only provided between the blocking disc 22 and the support ring 23. A buffer ring 28 is installed in the placement groove 25 of the support ring 23. The buffer ring 28, the blocking disc 22, and the inner wall of the annular groove 231 cooperate to form an annular accommodating cavity, and the adhesive is located within the accommodating cavity. A flexible pressure ring 242, which can be a rubber ring, is fixedly connected to the side of the mounting ring 24 near the blocking disc 22. When the mounting ring 24 is connected to the support ring 23 via bolts, the flexible pressure ring 242 presses the blocking disc 22 against the support ring 23. The mounting ring 24 is removable. After removing the mounting ring 24, the operator can observe the axial flux rotor 4 through the blocking disc 22, thereby improving the convenience of equipment inspection.

[0056] Example 3 Reference Figure 6 This embodiment differs from Embodiment 1 in that: In this embodiment, two sets of axial flux rotors 4 and sealing covers 2 are provided. The two sets of sealing covers 2 are respectively connected to the two reactors 3, and stirring shafts are provided in both sealing covers 2. The axial flux stator 5 is installed between the two sealing covers 2. When the axial flux stator 5 is in operation, it drives the two axial flux rotors 4 to rotate simultaneously, thereby driving the two stirring rods 1 to stir the materials in the two reactors 3, thereby improving the operating efficiency of the reactors 3.

[0057] Example 4 Reference Figure 7 The difference between this embodiment and embodiment 1 is that, in this embodiment, two groups of axial flux rotors 4 are provided, and the two groups of axial flux rotors 4 are respectively located at the two ends of the axial flux stator 5 along the axial direction. And the axial flux stator 5 and the axial flux rotor 4 are separated by a sealing cover 2. The sealing cover 2 is connected to the reactor 3, and two stirring rods 1 are provided in the reactor 3. The two stirring rods 1 correspond to the axial flux rotors 4 one by one and are connected through a gear set. When the axial flux stator 5 is working, it drives the two axial flux rotors 4 to rotate synchronously. The axial flux rotors 4 drive the corresponding stirring rods 1 to rotate through the gear set. A double stirring rod 1 structure is provided in the reactor 3, and the two stirring rods 1 are driven by different axial flux rotors 4, which is beneficial to improve the stirring efficiency of the material in the reactor 3.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A stirring drive device for a reactor, comprising a stirring rod (1), characterized in that: One end of the stirring rod (1) is rotatably connected to a sealing cover (2) for being fixed to the reactor (3). After the sealing cover (2) is fixed to the reactor (3), it cooperates with the reactor (3) to form a closed container. The end of the stirring rod (1) away from the sealing cover (2) extends into the reactor (3). The end of the stirring rod (1) located in the sealing cover (2) is connected to an axial magnetic flux rotor (4). An axial magnetic flux stator (5) corresponding to the axial magnetic flux rotor (4) is fixed on the outside of the sealing cover (2). The axial magnetic flux stator (5) generates magnetic flux when it is in operation. The axial magnetic flux rotor (4) is driven to rotate by the magnetic field. When the axial magnetic flux rotor (4) rotates, the stirring rod (1) is driven to rotate. The axial magnetic flux rotor (4) and the axial magnetic flux stator (5) are separated from each other by a sealing cover (2). The sealing cover (2) is fixed with a sealing member (6). The sealing member (6) is located between the reactor (3) and the sealing cover (2). The stirring rod (1) passes through the sealing member (6). When the stirring rod (1) rotates, the sealing member (6) is used to prevent the material in the reactor (3) from approaching the axial magnetic flux rotor (4).

2. A stirring drive device for a reactor according to claim 1, characterized in that: The sealing cover (2) includes a fixed portion (21) and a blocking disc (22), the fixed portion (21) is directly fixed to the reactor (3), the axial magnetic flux rotor (4) is located in the fixed portion (21) and is rotatably connected to the fixed portion (21), a support ring (23) is fixed to one end of the fixed portion (21) away from the reactor (3), and an annular groove (231) for placing the blocking disc (22) is provided on the side of the support ring (23) away from the reactor (3), the blocking disc (22) is made of non-magnetic insulating material, and the support ring (23) is fixed to the reactor (3). 3) A mounting ring (24) for fixing the blocking disk (22) is also provided. The mounting ring (24) is located on the side of the support ring (23) away from the reactor (3). The axial magnetic flux stator (5) is located on the side of the blocking disk (22) away from the axial magnetic flux rotor (4) and is fixed to the mounting ring (24). The inner diameter of the support ring (23) is larger than the outer diameters of the axial magnetic flux stator (5) and the axial magnetic flux rotor (4). The axial magnetic flux stator (5) and the axial magnetic flux rotor (4) both extend into the support ring (23) and are close to the blocking disk (22).

3. A stirring drive device for a reactor according to claim 2, characterized in that: The blocking disc (22) is made of ceramics. A placement groove (25) is provided on the side where the support ring (23) and the mounting ring (24) are close to each other. Buffer pads (26) are installed in the two placement grooves (25). The blocking disc (22) is located between the two buffer pads (26) and fits with the buffer pads (26). The two buffer pads (26) protrude from the corresponding placement grooves (25). The blocking disc (22) does not contact the support ring (23) and the mounting ring (24). The support ring (23) is provided with a circumferential groove that is parallel to the support ring (23). The annular groove (231) is connected to a limiting groove (27), a flexible positioning ring (271) is placed in the limiting groove (27), the blocking disc (22) is located in the flexible positioning ring (271) and is in contact with the flexible positioning disc, the mounting ring (24), the flexible positioning ring (271) and the buffer pad (26) cooperate with the annular cavity, the annular cavity is filled with adhesive, the mounting ring (24) is opened with a pouring hole (241) connected to the annular cavity, and the portion of the blocking disc (22) located in the annular cavity is covered with the adhesive.

4. The stirring drive device for a reactor according to claim 2, characterized in that: The blocking disc (22) is made of transparent glass, and both sides of the blocking disc (22) along the axial direction are bonded with a reinforcement layer (221), a flexible pressure ring (242) is fixedly connected to the side of the mounting ring (24) close to the blocking disc (22), a placement groove (25) is opened along the circumferential direction on the side of the support ring (23) close to the mounting ring (24), a buffer ring (28) is arranged in the placement groove (25), the side of the blocking disc (22) away from the mounting ring (24) is fitted with the buffer ring (28), the buffer ring (28), the blocking disc (22) and the inner wall of the annular groove (231) cooperate to form an annular accommodating cavity, the accommodating cavity is filled with adhesive, the support ring (23) is connected to the blocking disc (22) by the adhesive, the mounting ring (24) is detachably connected to the support ring (23) by bolts, and the axial magnetic flux stator (5) is located between the mounting ring (24) and the blocking disc (22) and is fixed to the mounting ring (24).

5. The stirring drive device for a reactor according to claim 1, characterized in that: The sealing member (6) comprises an upper sealing ring (61), a lower sealing ring (62) and a connecting ring (63). The connecting ring (63) is fixedly connected to the fixing portion (21). The upper sealing ring (61) and the lower sealing ring (62) are both coaxially fixedly connected to the inner side of the connecting ring (63). The upper sealing ring (61) is located on the side of the lower sealing ring (62) close to the axial magnetic flux rotor (4). A sealing ring (611) is coaxially fixed to the inner side of the upper sealing ring (61). The stirring rod (1) passes through the sealing ring (611) and is rotatably connected to the sealing ring (611). The lower sealing ring (62) is provided with an exhaust hole (621) along the axial direction for the stirring rod (1) to pass through. The diameter of the hole (621) is larger than the diameter of the stirring rod (1). An annular space is left between the upper sealing ring (61) and the lower sealing ring (62). A plurality of fan blades (11) are fixedly connected to the outside of the stirring rod (1). The plurality of fan blades (11) are all located in the annular space. When the stirring rod (1) rotates, the fan blades (11) push the air flow in the annular space to flow in the direction from the upper sealing ring (61) to the lower sealing ring (62). The connecting ring (63) and the upper sealing ring (61) are opened with a curved vent hole (64). One end of the vent hole (64) is located at the lower end surface of the upper sealing ring (61), and the other end is located at the lower end surface of the connecting ring (63) and is connected to the reactor (3).

6. The stirring drive device for a reactor according to claim 5, characterized in that: The vent holes (64) are evenly arranged along the circumference of the connecting ring (63); a convex ring (631) is fixedly connected to the lower end of the connecting ring (63); the vent holes (64) extend to a side of the convex ring (631) close to the axis of the stirring rod (1); a rotating ring (12) is provided at the lower end of the lower sealing ring (62); the inner diameter of the rotating ring (12) is larger than the diameter of the exhaust hole (621); a plurality of connecting rods (13) are fixedly connected between the stirring rod (1) and the rotating ring (12); the rotating ring (12) is located inside the convex ring (631) and does not contact the convex ring (631); a plurality of impact plates (14) are fixedly connected to the outer side of the rotating ring (12) along the circumference; the impact plates (14) are located between the convex ring (631) and the rotating ring (12) and are spirally arranged along the circumference of the rotating ring (12).

7. The stirring drive device for a reactor according to claim 5, characterized in that: The lower sealing ring (62) is provided with a rotation groove along the circumference of the stirring rod (1), and a retaining ring (65) is provided in the rotation groove. The end face of the retaining ring (65) along the axial direction is in contact with the inner wall of the rotation groove, and a gap is left between the inner wall of the retaining ring (65) and the outer circle of the stirring rod (1). A support rod (651) is fixedly connected between the retaining ring (65) and the stirring rod (1). A side of the retaining ring (65) close to the stirring rod (1) is slidably connected to a plurality of abutting rods (652) along the axial direction. All abutting rods (651) are fixedly connected to the stirring rod (1). The rods (652) are fixedly connected with a same flexible blocking ring (653). An elastic member (654) is provided between the blocking ring (65) and the abutting rod (652). In a natural state, the elastic member (654) pushes the abutting rod (652) close to the stirring rod (1), so that the flexible blocking ring (653) blocks the gap between the blocking ring (65) and the stirring rod (1). When the abutting rod (652) moves away from the stirring rod (1), the flexible blocking ring (653) separates from the stirring rod (1).

8. The stirring drive device for a reactor according to claim 1, characterized in that: There are two groups of axial magnetic flux rotors (4) and sealing covers (2), and the two sealing covers (2) are respectively connected to two different reactors (3). A stirring shaft connected to the axial magnetic flux rotor (4) is also rotatably connected inside the sealing cover (2). The axial magnetic flux stator (5) is located between the two groups of axial magnetic flux rotors (4). When the axial magnetic flux stator (5) is in operation, it drives the two groups of axial magnetic flux rotors (4) to rotate synchronously.

9. The stirring drive device for a reactor according to claim 1, characterized in that: There are two groups of axial magnetic flux rotors (4) and sealing covers (2), and the two groups of sealing covers (2) are connected to the same reactor (3). Two groups of stirring rods (1) corresponding to the axial magnetic flux rotors (4) are provided in the reactor (3), and the stirring rods (1) are connected to the corresponding axial magnetic flux rotors (4). The axial magnetic flux stator (5) is located between the two axial magnetic flux rotors (4) and is used to drive the two axial magnetic flux rotors (4) to rotate.

10. The stirring drive device for a reactor according to claim 1, characterized in that: A heat exchange ring (7) is fixedly provided in the sealing cover (2), and the heat exchange ring (7) is located at one end of the axial magnetic flux rotor (4) away from the axial magnetic flux stator (5). A heat sink (71) is fixedly provided on the outside of the sealing cover (2), and a circulation pipe (72) is connected between the heat sink (71) and the heat exchange ring (7). The circulation pipe (72) is filled with a heat exchange medium, and the heat sink (71) is provided with a power pump (73) for driving the heat exchange medium to circulate between the heat sink (71) and the heat exchange ring (7).

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