Magnetic suspension stirring reaction kettle

Abstract

The utility model relates to a magnetic suspension stirring reaction kettle which comprises a stirring barrel, a reaction kettle flange arranged at the top end of the stirring barrel, a stirring rod inserting hole formed in the center of the reaction kettle flange, an annular motor support and a split type oil seal set arranged at the top end of the reaction kettle flange, and a large-torque low-speed hollow shaft permanent magnet motor arranged at the top end of the motor support. A stirring rod is installed in a hollow motor shaft of the hollow shaft permanent magnet motor, the middle of the stirring rod is installed in the split type oil seal set, the lower portion of the stirring rod penetrates through the stirring rod insertion hole from top to bottom and then is inserted into the stirring barrel, and an upper stirring blade and a lower stirring blade which are used for stirring reaction materials are installed on the lower portion of the stirring rod. The stirring device has the beneficial effects that the stirring rod is suspended and supported, so that the stirring rod does not need to be supported by a bearing seat; the stirring rod and the hollow shaft permanent magnet motor are convenient to disassemble and assemble; and the stirring rod is subjected to oil sealing by adopting the multi-layer split type oil seal group, so that the split type oil seal is convenient to maintain and replace.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a magnetically suspended stirred reaction vessel. Background Technology

[0002] The existing reactor consists of a motor, a reducer, a bearing housing, a mechanical seal, a coupling, a stirring rod, a reactor cover, a reactor body, a feed inlet, and a discharge outlet. The motor is connected to the reducer, which is mounted on the bearing housing. A bearing is installed on the bearing housing, and a mechanical seal is located below the bearing and fixed to the bearing housing. The bearing housing is mounted on the reactor cover, which has a feed inlet. The reactor cover is connected to the reactor body with screws.

[0003] The existing reactor has the following disadvantages: 1. The reactor adopts an assembly structure of motor + reducer + bearing housing. Over time, this can lead to oil leakage from the reducer, causing environmental pollution, reducer seizure, equipment damage, and a risk of motor burnout, as well as noise from the reducer; 2. The two bearings on the reducer output shaft and the two bearings on the bearing housing, a total of four bearings, are difficult to align concentrically during installation, leading to increased motor load and equipment sway; 3. Due to the reducer's role in power transmission and the misalignment of the bearing housing, a certain amount of energy loss occurs; 4. When the mechanical seal of the equipment is damaged and needs repair, the coupling of the motor's stirring shaft needs to be removed. Because the motor + reducer + bearing housing is very heavy, disassembly and assembly are difficult and unsafe. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems in the existing technology and provide a magnetically suspended stirred reactor.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A magnetically levitated stirred reactor includes a stirring tank. A reactor flange is installed at the top of the stirring tank. A stirring rod insertion hole is opened in the center of the reactor flange. A circular motor bracket and a split-type oil seal assembly are installed at the top of the reactor flange. A high-torque, slow-speed hollow shaft permanent magnet motor is installed at the top of the motor bracket. A stirring rod is installed in the hollow motor shaft of the hollow shaft permanent magnet motor. The middle part of the stirring rod is installed in the split-type oil seal assembly. The lower part of the stirring rod passes through the stirring rod insertion hole from top to bottom and is inserted into the stirring tank. An upper stirring blade and a lower stirring blade for stirring the reaction materials are installed on the lower part of the stirring rod.

[0007] The mixing tank has a feed inlet on one side of the top and a discharge outlet at the center of the bottom.

[0008] The split-type oil seal assembly includes, from top to bottom, an annular oil seal cover, a first split-type oil seal, a second split-type oil seal, and a third split-type oil seal. The oil seal cover is connected to the reactor flange with fastening bolts, and the first split-type oil seal, the second split-type oil seal, and the third split-type oil seal are sandwiched between the oil seal cover and the reactor flange.

[0009] The hollow shaft permanent magnet motor includes a lower motor cover, a motor housing, an upper motor cover, and a hollow motor shaft. The upper and lower motor covers are respectively installed at the upper and lower ends of the motor housing. A circular stator is installed on the inner side of the motor housing. A motor bearing is installed at the center of the lower and upper motor covers, respectively. The two ends of the hollow motor shaft are respectively installed on two motor bearings. A rotor support is fixed to the middle of the outer side of the hollow motor shaft. Several evenly distributed permanent magnets are installed on the outer periphery of the rotor support. A motor junction box is installed at the top of the upper motor cover.

[0010] A connecting key is installed between the hollow motor shaft and the upper part of the stirring rod to fix the hollow motor shaft and the stirring rod axially.

[0011] The top of the stirring rod is equipped with a lifting flange and a lifting bolt. The lifting flange is sandwiched between the head of the lifting bolt and the top of the stirring rod. The top of the hollow motor shaft abuts against the bottom of the lifting flange. The outer diameter of the lifting flange is equal to the outer diameter of the top of the hollow motor shaft.

[0012] The motor bracket has an operation hole on its side wall for easy maintenance of the split oil seal assembly.

[0013] The beneficial effects of this utility model are:

[0014] 1. By utilizing the attraction between the permanent magnet on the rotor support and the silicon steel sheet in the stator, as well as the centripetal force generated between the permanent magnet and the stator during the rotation of the rotor support, the rotor support is suspended between the stators, thereby providing a suspension support for the stirring rod, so that the stirring rod does not need the support of the bearing seat.

[0015] 2. The stirring rod is directly connected to the hollow motor shaft of the hollow shaft permanent magnet motor, eliminating the coupling between the stirring rod and the motor shaft, which facilitates the disassembly and assembly of the stirring rod and the hollow shaft permanent magnet motor;

[0016] 3. A multi-layered split-type oil seal assembly is used to seal the stirring rod. When repairing the split-type oil seal, simply loosen the fastening bolts, then disassemble and remove the split-type oil seal that needs to be replaced from the split-type oil seal assembly, and it can be replaced again. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the magnetically suspended stirred reactor in this utility model;

[0019] The following are the labels in the diagram: 1. Motor housing; 2. Lower motor cover; 3. Motor bracket; 4. Reactor flange; 5. Upper stirring blade; 6. Stator; 7. Permanent magnet; 8. Upper motor cover; 9. Hanging bolt; 10. Hanging flange; 11. Connecting key; 12. Motor junction box; 13. Rotor bracket; 14. Motor bearing; 15. Hollow motor shaft; 17. Stirring rod; 18. Fastening bolt; 19. Oil seal cover; 20. Feed inlet; 21. First split oil seal; 22. Second split oil seal; 23. Third split oil seal; 24. Stirring rod insertion hole; 25. Lower stirring blade; 26. Discharge port; 27. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, a magnetically suspended stirred reactor includes a stirring tank 6, with a feed inlet 21 on one side of the top of the stirring tank 6 and a discharge outlet 27 at the center of the bottom of the stirring tank 6.

[0022] The top of the mixing tank 6 is equipped with a reactor flange 4, and the center of the reactor flange 4 has a stirring rod insertion hole 25.

[0023] A circular motor bracket 3 is installed at the top of the reactor flange 4. A high-torque, slow-speed hollow shaft permanent magnet motor is installed at the top of the motor bracket 3. The hollow shaft permanent magnet motor includes a lower motor cover 2, a motor housing 1, an upper motor cover 9, and a hollow motor shaft 17. The upper motor cover 9 and the lower motor cover 2 are respectively installed at the upper and lower ends of the motor housing 1. A circular stator 7 is installed on the inner side of the motor housing 1. A motor bearing 15 is installed at the center of the lower motor cover 2 and the center of the upper motor cover 9. The two ends of the hollow motor shaft 17 are respectively installed on the two motor bearings 15. A rotor bracket 14 is fixed to the middle of the outer side of the hollow motor shaft 17. Several evenly distributed permanent magnets 8 are installed on the outer periphery of the rotor bracket 14. A motor junction box 13 is installed at the top of the upper motor cover 9.

[0024] A stirring rod 18 is installed in the hollow motor shaft 17 of the hollow shaft permanent magnet motor. A connecting key 12 is installed between the hollow motor shaft 17 and the upper part of the stirring rod 18 to fix the hollow motor shaft 17 and the stirring rod 18 axially. The lower part of the stirring rod 18 passes through the stirring rod insertion hole 25 from top to bottom and is inserted into the stirring tank 6. The lower part of the stirring rod 18 is equipped with an upper stirring blade 5 and a lower stirring blade 26 for stirring the reaction materials.

[0025] A split-type oil seal assembly is also installed at the top of the reactor flange 4. The middle part of the stirring rod 18 is installed in the split-type oil seal assembly. The split-type oil seal assembly includes, from top to bottom, a circular oil seal cover 20, a first split-type oil seal 22, a second split-type oil seal 23, and a third split-type oil seal 24. The oil seal cover 20 is connected to the reactor flange 4 by fastening bolts 19. The first split-type oil seal 22, the second split-type oil seal 23, and the third split-type oil seal 24 are sandwiched between the oil seal cover 20 and the reactor flange 4.

[0026] The top of the stirring rod 18 is equipped with a lifting flange 11 and a lifting bolt 10. The lifting flange 11 is sandwiched between the head of the lifting bolt 10 and the top of the stirring rod 18. The top of the hollow motor shaft 17 abuts against the bottom of the lifting flange 11. The outer diameter of the lifting flange 11 is equal to the outer diameter of the top of the hollow motor shaft 17.

[0027] The motor bracket 3 has an operation hole on its side wall for easy maintenance of the split oil seal assembly.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A magnetically suspended stirred reaction vessel, characterized by: Including the stirring barrel, the reaction kettle flange is installed at the top, the center of the reaction kettle flange is provided with a stirring rod insertion hole, the circular ring motor support and split oil seal group are installed at the top of the reaction kettle flange, the hollow shaft permanent magnet motor of large torque and slow speed is installed at the top of the motor support, a stirring rod is installed in the hollow motor shaft of the hollow shaft permanent magnet motor, the middle part of the stirring rod is installed in the split oil seal group, the lower part of the stirring rod is inserted into the stirring barrel from top to bottom after passing through the stirring rod insertion hole, and the upper stirring blade and the lower stirring blade for stirring the reaction material are installed on the lower part of the stirring rod.

2. The magnetically levitated stirred reaction kettle of claim 1, wherein: A feeding port is formed in one side of the top of the stirring barrel, and a discharging port is formed in the center of the bottom of the stirring barrel.

3. The magnetically levitated stirred reaction kettle of claim 1, wherein: The split oil seal group sequentially includes a circular ring oil seal gland, a first split oil seal, a second split oil seal and a third split oil seal from top to bottom, the oil seal gland is connected with the reaction kettle flange through fastening bolts, and the first split oil seal, the second split oil seal and the third split oil seal are clamped between the oil seal gland and the reaction kettle flange.

4. The magnetically levitated stirred reaction kettle of claim 1, wherein: The hollow shaft permanent magnet motor includes a motor lower end cover, a motor shell, a motor upper end cover and a hollow motor shaft, the motor upper end cover and the motor lower end cover are respectively installed at the upper end and the lower end of the motor shell, a circular ring stator is installed on the inner side of the motor shell, one motor bearing is respectively installed at the center of the motor lower end cover and the center of the motor upper end cover, the hollow motor shaft is respectively installed on the two motor bearings, a rotor support is fixedly connected to the outer side of the middle part of the hollow motor shaft, a plurality of evenly distributed permanent magnets are installed on the outer periphery of the rotor support, and a motor junction box is installed at the top of the motor upper end cover.

5. The magnetically levitated stirred reaction vessel of claim 4, wherein: A coupling key is installed between the hollow motor shaft and the upper part of the stirring rod to axially fix the hollow motor shaft and the stirring rod.

6. The magnetically levitated stirred reaction vessel of claim 1, wherein: A hoisting flange and a hoisting bolt are installed at the top end of the stirring rod, the hoisting flange is clamped between the head of the hoisting bolt and the top end of the stirring rod, the top end of the hollow motor shaft abuts against the bottom end of the hoisting flange, and the outer diameter of the hoisting flange is equal to the outer diameter of the top end of the hollow motor shaft.

7. The magnetically levitated stirred reaction vessel of claim 1, wherein: An operation hole is formed in the side wall of the motor support to facilitate maintenance of the split oil seal group.

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