A high torque and low friction stirring device

Abstract

The present invention relates to the technical field of stirring devices, including an outer shell, an inner shell, a magnetic drive mechanism and a stirring mechanism; the inner shell and the magnetic drive mechanism are arranged in the outer shell; the stirring mechanism is arranged in the inner shell; the magnetic drive mechanism includes an active disk, a support block and a driving member; the active disk is provided with a plurality of active magnets; a first supporting protrusion is provided between the active disk and the support block; the stirring mechanism includes a stator and a driven disk; the outer periphery of the driven disk is provided with stirring blades; the driven disk is provided with a driven magnet; a second supporting protrusion is provided between the stator and the driven disk. Specifically, it relates to a high-torque and low-friction stirring device. The present invention can greatly reduce the friction force of the active disk and the driven disk when they rotate by arranging the first supporting protrusion and the second supporting protrusion, thereby increasing the magnetic force of the active magnet and the driven magnet to prevent the stirring mechanism from losing step and slipping.

Description

Technical Field

[0001] The invention relates to the technical field of stirring devices, and in particular to a stirring device with high torque and low friction. Background Art

[0002] In daily life, with the progress of society and the continuous development of science and technology, people have more and more demands for mixing drinks or food and have higher requirements such as: light, energy-saving, beautiful, environmentally friendly, etc. In short, they need to be good quality and cheap. The existing cup beverage mixing systems are mainly divided into two categories: direct drive and indirect drive:

[0003] 1. The first type of direct transmission is that the connecting shaft of the motor is directly inserted into the inner liner of the cup, the front end of the connecting shaft of the motor is connected to the rotating disk, the motor drives the connecting shaft, and the connecting shaft drives the rotating disk to rotate at high speed to stir the beverage or food. Since the connecting shaft is inserted into the inner liner, the connecting shaft and the cup body need to be sealed, and liquid is easily retained in the sealing part, which breeds microorganisms; the sealing parts are easily worn when the connecting shaft rotates at high speed, and the sealing parts are aged when used in a high temperature environment for a long time, causing the seal to fail, and liquid enters the inside of the drive device, causing a safety accident.

[0004] 2. The second type of indirect transmission is that the motor's rotating shaft is connected to the active disk embedded with magnets, which drives the driven disk blades embedded with magnets through magnetic force. The active disk applies rotational torque to the driven disk through magnetic force, and the motor rotates at high speed, thereby driving the blades to rotate, thereby stirring drinks or food.

[0005] However, since the magnetic force of mutual attraction between the active disk and the driven disk is completely transmitted to the contact surface between the driven disk and the inner pot, the friction of the contact surface will increase, and the contact surface will be ground into powder, posing a risk of powder entering the beverage or food. Due to the above reasons, the active disk and the driven disk in the current products are designed to have small magnetic forces of the active magnet and the driven magnet, and the torque generated is small, which makes it easy for the active disk and the driven disk to lose step and slip. Therefore, only beverages with low viscosity can be stirred.

[0006] In addition, due to the wear of the supporting parts and the unstable rotation, the current products are generally noisy. Because the transmission motor is affected by the axial magnet attraction, the friction is large, and the temperature of the motor rises rapidly when it is working, which reduces the life of the motor. The published magnetic suspension mechanism adopts a surrounding magnetic suspension structure, but this structure is large and heavy, and has a high manufacturing cost, which is not conducive to the use of portable blenders, especially the design and production of portable accompanying cups. Summary of the invention

[0007] The purpose of the present invention is to provide a high-torque and low-friction stirring device to reduce the friction during rotation in view of the above-mentioned deficiencies in the prior art.

[0008] The object of the present invention is achieved through the following technical solutions: A high-torque, low-friction stirring device, comprising an outer shell, an inner pot, a magnetic drive mechanism and a stirring mechanism; the inner pot and the magnetic drive mechanism are arranged in the outer shell; the stirring mechanism is arranged in the inner pot;

[0009] The magnetic drive mechanism comprises an active disk, a support block and a drive member; the drive member is used to drive the active disk to rotate; the active disk is provided with a plurality of active magnets; a first support convex body is provided between the active disk and the support block; the active disk and the support block are in rotational contact through the first support convex body; the support block is provided on the outer bottom wall of the inner container;

[0010] The stirring mechanism includes a stator and a driven disk; stirring blades are provided on the outer periphery of the driven disk; the driven disk is provided with a plurality of driven magnets cooperating with the active magnet; a second supporting protrusion is provided between the stator and the driven disk; the stator and the driven disk are in rotational contact through the second supporting protrusion; the stator is provided on the inner bottom wall of the inner pot.

[0011] The present invention is further configured such that the number of the active magnets is multiple; the multiple active magnets are equally spaced and distributed in a circle along the center of the active disk;

[0012] There are multiple driven magnets; the multiple driven magnets are evenly spaced and distributed in a circle along the center of the driven disk.

[0013] The present invention is further configured such that the center of the top of the active disk is recessed downward to form a rotation groove; the support block is arranged in the rotation groove; the first support protrusion is arranged between the bottom wall of the rotation groove and the bottom of the support block; and the side wall of the rotation groove is spaced apart from the support block.

[0014] The present invention is further configured such that the magnetic drive mechanism further includes a first gear and a second gear; the output end of the drive member is connected to the first gear; the second gear is meshed with the first gear; and the second gear is coaxially driven with the active disk.

[0015] The present invention is further configured such that a first fixing member is provided on the active disk; the active magnet is detachably connected to the active disk via the first fixing member;

[0016] The driven disk is provided with a second fixing piece; the driven magnet is detachably connected to the driven disk via the second fixing piece.

[0017] The present invention is further configured such that the center of the bottom of the driven disk is recessed upward to form a rotating cavity; the stator is disposed in the rotating cavity; the second supporting protrusion is disposed between the top wall of the rotating cavity and the top surface of the stator; the side wall of the rotating cavity is spaced apart from the stator;

[0018] The top surface of the stator protrudes out of the rotating cavity to form a handle.

[0019] The present invention is further configured such that the stirring blades include an upwardly tilted blade and a downwardly tilted blade;

[0020] The number of the upward-curving blades and the number of the downward-curving blades are both multiple, and the upward-curving blades and the downward-curving blades are alternately arranged.

[0021] The present invention is further configured such that a buffer magnet is provided in the stator; the top surface of the buffer magnet has the same polarity as the bottom surface of the driven magnet; and the height of the bottom surface of the driven magnet is higher than the height of the bottom surface of the buffer magnet.

[0022] The present invention is further configured that a bracket is provided inside the outer shell; the bracket and the inner shell are respectively provided at two ends of the outer shell; the driving member is provided on the bracket;

[0023] A first buffer pad is provided at the bottom of the stator;

[0024] A second buffer pad is provided at the bottom of the shell;

[0025] The top of the shell is connected with a cover body; the cover body is detachably connected to the shell;

[0026] A sealing ring is provided between the outer shell and the inner container;

[0027] A battery and a connector are arranged in the housing;

[0028] The outer wall of the shell is provided with a heating pipe.

[0029] The present invention is further configured such that the shape of the first supporting protrusion and / or the shape of the second supporting protrusion is a sphere, a hemisphere, a cylinder, a torus, a cone, a cube, a cuboid or a trapezoid.

[0030] Beneficial effects of the present invention: 1. The present invention can greatly reduce the friction force when the active disk and the driven disk rotate by setting the first supporting protrusion and the second supporting protrusion, thereby increasing the magnetic force of the active magnet and the driven magnet to prevent the stirring mechanism from losing step and slipping.

[0031] 2. The present invention reduces the friction between the stator and the driven disk while increasing the torque by buffering the reverse repulsive force of the magnet and the lift of the stirring blade.

[0032] 3. The detachable design between the driven disk and the stator of the present invention realizes the separation design of the stirring mechanism and the inner container, thereby making the stirring device easy to clean.

[0033] 4. Compared with the traditional magnetic levitation technology, the present invention has a simple structure, low manufacturing cost, and small size, and can be promoted and used on portable blenders, especially portable blending cups. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0035] Figure 1 is a cross-sectional view of Example 1 of the present invention;

[0036] Figure 2 is a cross-sectional view from another viewing angle of Embodiment 1 of the present invention;

[0037] Figure 3 is a cross-sectional view of the magnetic drive mechanism of Example 1 of the present invention;

[0038] Figure 4 This is a structural exploded view of the driving member, the active disk and the supporting block in Embodiment 1 of the present invention;

[0039] Figure 5 is a cross-sectional view of the stirring mechanism of Example 1 of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the stirring mechanism of Example 1 of the present invention;

[0041] Figure 7 This is a structural exploded view of the stirring mechanism of Example 1 of the present invention after the buffer magnet is hidden;

[0042] Figure 8 is a cross-sectional view of the magnetic drive mechanism of embodiment 2 of the present invention;

[0043] Fig. 9 is a cross-sectional view of a driven disk according to Embodiment 3 of the present invention;

[0044] Among them: 1. outer shell; 2. liner; 31. bracket; 32. active disk; 321. active magnet; 322. rotating groove; 33. support block; 34. driving member; 35. first supporting protrusion; 36. first fixing member; 371. first gear; 372. second gear; 41. stator; 411. buffer magnet; 42. driven disk; 421. driven magnet; 422. rotating cavity; 43. second supporting protrusion; 44. handle; 45. second fixing member; 461. upturned blade; 462. downturned blade; 47. first buffer pad; 5. second buffer pad; 6. cover; 7. sealing ring; 81. battery; 82. connector; 9. heating tube. DETAILED DESCRIPTION

[0045] The present invention is further described in conjunction with the following examples.

[0046] Embodiment 1, by Figures 1 to 7 It can be seen that the high-torque and low-friction stirring device described in this embodiment includes a shell 1, an inner pot 2, a magnetic driving mechanism and a stirring mechanism; the inner pot 2 and the magnetic driving mechanism are arranged in the shell 1; the stirring mechanism is arranged in the inner pot 2;

[0047] The magnetic drive mechanism includes an active disk 32, a support block 33 and a drive member 34; the drive member 34 is used to drive the active disk 32 to rotate; the active disk 32 is provided with a plurality of active magnets 321; a first support protrusion 35 is provided between the active disk 32 and the support block 33; the active disk 32 and the support block 33 are in rotational contact through the first support protrusion 35; the support block 33 is provided on the outer bottom wall of the inner container 2;

[0048] The stirring mechanism includes a stator 41 and a driven disk 42; stirring blades are provided on the outer periphery of the driven disk 42; the driven disk 42 is provided with a plurality of driven magnets 421 that cooperate with the active magnet 321; a second supporting protrusion 43 is provided between the stator 41 and the driven disk 42; the stator 41 and the driven disk 42 are in rotational contact through the second supporting protrusion 43; the stator 41 is provided on the inner bottom wall of the inner pot 2; the driving member 34 is a motor, and the active magnet 321 and the driven magnet 421 can be permanent magnets or electromagnets; in addition, the top surface of the support block 33 is higher than the top surface of the active disk 32, and the bottom surface of the driven disk 42 is higher than the bottom surface of the stator 41.

[0049] Specifically, the high-torque, low-friction stirring device described in this embodiment, when in use, first puts the stator 41 and the driven disk 42 into the inner pot 2, wherein the stator 41 and the driven disk 42 are detachably connected, and since the stator 41 can move freely in the inner pot 2, under the magnetic force of the active disk 32 and the driven disk 42, the stator 41 and the driven disk 42 can automatically adjust the centering position; and the top surface of the support block 33 is fixed to the outer bottom wall of the inner pot 2, due to the mutual attraction between the active magnet 321 and the driven magnet 421, the active disk 32 has an attraction toward the inner pot 2, and by providing the support block 33, the active disk 32 can be prevented from contacting the outer bottom wall of the inner pot 2.

[0050] When stirring is required, the driving member 34 is started, and the driving member 34 drives the active disk 32 to rotate. The rotating disk is in rotational contact with the support block 33 through the first supporting protrusion 35. Then, during the rotation of the active disk 32, the driven disk 42 is driven to rotate through the magnetic force between the active magnet 321 and the driven magnet 421, and the driven disk 42 is in rotational contact with the stator 41 through the second supporting protrusion 43, thereby stirring through the stirring blades.

[0051] In this embodiment, a first supporting protrusion 35 is set between the active disk 32 and the supporting block 33, so that the active disk 32 and the supporting block 33 are in rotational contact through the supporting protrusion, thereby greatly reducing the contact area between the active disk 32 and the supporting block 33. When the driving member 34 drives the active disk 32 to rotate, the friction force of the active disk 32 is greatly reduced, thereby increasing the life of the driving member 34 and increasing the magnetic force of the active magnet 321 and the driven magnet 421 to prevent the stirring mechanism from losing step and slipping.

[0052] In addition, by providing a second supporting protrusion 43 between the driven disk 42 and the stator 41, the driven disk 42 and the stator 41 are in rotational contact through the supporting protrusion, which greatly reduces the contact area between the driven disk 42 and the stator 41. When the driven disk 42 rotates, the friction force of the driven disk 42 is greatly reduced, thereby increasing the magnetic force of the driven magnet 421 and the active magnet 321 to prevent the stirring mechanism from losing step and slipping.

[0053] In the high-torque and low-friction stirring device described in this embodiment, the number of the active magnets 321 is multiple; the multiple active magnets 321 are equally spaced and distributed in a circle along the center of the active disk 32;

[0054] There are multiple driven magnets 421 ; the multiple driven magnets 421 are evenly spaced and distributed in a circle along the center of the driven disk 42 .

[0055] Specifically, the above-mentioned arrangement can ensure the magnetic force of the stirring device, thereby preventing the driven disk 42 and the active disk 32 from losing step and slipping; and when the stator 41 and the driven disk 42 are installed to the inner tank 2, under the action of the magnetic force of the active disk 32 and the driven disk 42, the stator 41 and the driven disk 42 can automatically adjust the centering position.

[0056] The present embodiment describes a high-torque, low-friction stirring device, in which the center of the top of the active disk 32 is recessed downward to form a rotating groove 322; the support block 33 is arranged in the rotating groove 322; the first supporting protrusion 35 is arranged between the bottom wall of the rotating groove 322 and the bottom of the support block 33; the side wall of the rotating groove 322 is spaced apart from the support block 33.

[0057] Specifically, by setting the rotating groove 322, most of the support block 33 can be accommodated in the rotating groove 322, thereby reducing the space of the stirring device; in addition, by spacing the side wall of the rotating groove 322 and the support block 33, friction force is prevented from being generated after the side wall of the rotating groove 322 contacts the side wall of the support block 33.

[0058] In the high torque and low friction stirring device described in this embodiment, the active disk 32 is provided with a first fixing member 36; the active magnet 321 is detachably connected to the active disk 32 through the first fixing member 36; wherein the first fixing member 36 is a bolt. The above arrangement facilitates the replacement of the active magnet 321 by the active disk 32.

[0059] The driven disk 42 is provided with a second fixing member 45; the driven magnet 421 is detachably connected to the driven disk 42 via the second fixing member 45; wherein the second fixing member 45 is a bolt. The above arrangement facilitates the replacement of the driven magnet 421 on the driven disk 42.

[0060] The present embodiment describes a high-torque, low-friction stirring device, wherein the center of the bottom of the driven disk 42 is recessed upward to form a rotating chamber 422; the stator 41 is disposed in the rotating chamber 422; the second supporting protrusion 43 is disposed between the top wall of the rotating chamber 422 and the top surface of the stator 41; the side wall of the rotating chamber 422 is spaced apart from the stator 41; specifically, by providing the rotating chamber 422, most of the stator 41 can be accommodated in the rotating chamber 422, thereby reducing the space of the stirring device; in addition, by spaced apart from the stator 41, the side wall of the rotating chamber 422 is prevented from generating frictional force after contacting the side wall of the stator 41.

[0061] A handle 44 is formed on the top surface of the stator 41 after it protrudes out of the rotating cavity 422. The handle 44 is provided to facilitate the extraction of the stator 41 and the driven disk 42.

[0062] The high-torque and low-friction stirring device described in this embodiment, wherein the stirring blades include an upwardly tilted blade 461 and a downwardly tilted blade 462.

[0063] The number of the upward-curving blades 461 and the number of the downward-curving blades 462 are both plural, and the upward-curving blades 461 and the downward-curving blades 462 are alternately arranged.

[0064] Specifically, in the combination of the upward blade 461 and the downward blade 462, the upward angle of the upward blade 461 is greater than the downward angle of the downward blade 462, and the upward angle and the downward angle are between 1 degree and 55 degrees. The shape of the upward blade 461 and the shape of the downward blade 462 are both designed to be knife-edge shapes on all sides, that is, a structure with a thin thickness on all sides and a thick thickness in the middle, so that a vortex can be generated during the stirring process of the beverage, allowing for sufficient stirring; in addition, the upper vortex generated by the upward blade 461 can also generate an upward lift, thereby reducing the friction between the driven disk 42 and the stator 41 while increasing the torque.

[0065] The embodiment of the invention is a high-torque, low-friction stirring device, in which a buffer magnet 411 is provided in the stator 41; the top surface of the buffer magnet 411 has the same polarity as the bottom surface of the driven magnet 421; the height of the bottom surface of the driven magnet 421 is higher than the height of the bottom surface of the buffer magnet 411.

[0066] Specifically, by providing a buffer magnet 411, and the polarity of the top surface of the buffer magnet 411 is the same as the polarity of the bottom surface of the driven magnet 421, the stator 41 can generate an opposite thrust on the driven disk 42, pushing the driven disk 42 upward, thereby reducing the pressure on the driven disk 42, the stator 41 and the second supporting protrusion 43, so as to achieve the purpose of further reducing friction.

[0067] In the high torque and low friction stirring device described in this embodiment, a bracket 31 is provided in the housing 1; the bracket 31 and the inner container 2 are respectively provided at two ends of the housing 1; the driving member 34 is provided on the bracket 31; the above arrangement facilitates fixing the driving member 34 and the battery 81;

[0068] The bottom of the stator 41 is provided with a first buffer pad 47; by providing the first buffer pad 47, the friction between the stator 41 and the inner liner 2 can be reduced during operation, the buffering effect can be enhanced, and the movement can be more stable;

[0069] The bottom of the housing 1 is provided with a second cushion 5; the first cushion 47 can protect the housing 1 and the internal parts;

[0070] The top of the shell 1 is connected to a cover 6; the cover 6 is detachably connected to the shell 1; the inner liner 2 is conveniently opened and closed by the cover;

[0071] A sealing ring 7 is provided between the outer shell 1 and the inner shell 2; the above arrangement can prevent liquid from entering the inner shell 1;

[0072] The housing 1 is provided with a battery 81 and a connector 82. The above arrangement facilitates the stirring device to be powered by the battery 81 or by an external connection for power supply.

[0073] The outer shell 1 is provided with a heating tube 9 on the outer wall of the inner container 2. The above arrangement facilitates heating of the beverage or food in the inner container 2.

[0074] In the high-torque, low-friction stirring device described in this embodiment, the shape of the first supporting protrusion 35 and / or the shape of the second supporting protrusion 43 is a sphere, a hemisphere, a cylinder, a torus, a cone, a cube, a cuboid or a trapezoid. The above shapes can change the surface contact between the traditional active disk 32 and the inner container 2 and the surface contact between the driven disk 42 and the stator 41, thereby reducing friction.

[0075] In the high torque and low friction stirring device described in this embodiment, one end of the first supporting protrusion 35 is fixedly arranged on the active disk 32; the other end of the first supporting protrusion 35 is in rotational contact with the supporting block 33. In this embodiment, by arranging the first supporting protrusion 35 on the active disk 32, the active disk 32 is in rotational contact with the supporting block 33 through the first supporting protrusion 35.

[0076] In the high torque and low friction stirring device described in this embodiment, one end of the first supporting protrusion 35 is fixedly arranged on the supporting block 33; the other end of the first supporting protrusion 35 is in rotational contact with the active disk 32. In this embodiment, the first supporting protrusion 35 is arranged on the supporting block 33, so that the active disk 32 is in rotational contact with the first supporting protrusion 35.

[0077] In the high-torque and low-friction stirring device described in this embodiment, one end of the second supporting protrusion 43 is fixedly arranged on the driven disk 42; the other end of the second supporting protrusion 43 is in rotational contact with the stator 41. In this embodiment, the second supporting protrusion 43 is arranged on the driven disk 42, so that the driven disk 42 is in rotational contact with the stator 41 through the second supporting protrusion 43.

[0078] In the high-torque and low-friction stirring device described in this embodiment, one end of the second supporting protrusion 43 is fixedly arranged on the stator 41; the other end of the second supporting protrusion 43 is in rotational contact with the driven disk 42. In this embodiment, the second supporting protrusion 43 is arranged on the stator 41, so that the driven disk 42 is in rotational contact with the stator 41 through the second supporting protrusion 43.

[0079] Embodiment 2, as Figure 8 As shown, different from Example 1, in the high-torque and low-friction stirring device described in this embodiment, the magnetic drive mechanism further includes a first gear 371 and a second gear 372; the output end of the driving member 34 is connected to the first gear 371; the second gear 372 is meshed with the first gear 371; the second gear 372 is coaxially driven with the active disk 32. Specifically, since the space of the stirring device is small, only a motor driving member 34 with a smaller volume can be used, and the torque generated by the motor driving member 34 with a smaller volume is small, so this embodiment adopts the first gear 371 and the second gear 372, and by adjusting the size of the first gear 371 and the second gear 372, the torque on the active disk 32 can be increased.

[0080] Embodiment 3, as Fig. 9 As shown, different from Example 1, the high-torque and low-friction stirring device described in this embodiment has a handle 44 arranged on the top of the driven disk 42, and the number of the second supporting protrusion 43 is one, and the second supporting protrusion 43 is arranged in the center of the driven disk 42.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A high torque and low friction stirring device, characterized in that: It comprises an outer shell (1), an inner shell (2), a magnetic drive mechanism and a stirring mechanism; the inner shell (2) and the magnetic drive mechanism are arranged in the outer shell (1); the stirring mechanism is arranged in the inner shell (2); The magnetic drive mechanism comprises an active disk (32), a support block (33) and a driving member (34); the driving member (34) is used to drive the active disk (32) to rotate; the active disk (32) is provided with a plurality of active magnets (321); a first supporting protrusion (35) is provided between the active disk (32) and the support block (33); the active disk (32) and the support block (33) are in rotational contact via the first supporting protrusion (35); the support block (33) is provided on the outer bottom wall of the inner container (2); The stirring mechanism comprises a stator (41) and a driven disk (42); stirring blades are arranged on the outer periphery of the driven disk (42); the driven disk (42) is provided with a plurality of driven magnets (421) cooperating with the driving magnet (321); a second supporting protrusion (43) is arranged between the stator (41) and the driven disk (42); the stator (41) and the driven disk (42) are in rotational contact via the second supporting protrusion (43); the stator (41) is arranged on the inner bottom wall of the inner pot (2); The number of the active magnets (321) is multiple; the multiple active magnets (321) are equally spaced and distributed in a circle along the center of the active disk (32); The number of the driven magnets (421) is multiple; the multiple driven magnets (421) are equally spaced and distributed in a circle along the center of the driven disk (42); A buffer magnet (411) is provided in the stator (41); the top surface of the buffer magnet (411) has the same polarity as the bottom surface of the driven magnet (421); and the height of the bottom surface of the driven magnet (421) is higher than the height of the bottom surface of the buffer magnet (411).

2. A high torque and low friction stirring device according to claim 1, characterized in that: The center of the top of the active disk (32) is recessed downward to form a rotation groove (322); the support block (33) is arranged in the rotation groove (322); the first support protrusion (35) is arranged between the bottom wall of the rotation groove (322) and the bottom of the support block (33); and the side wall of the rotation groove (322) is spaced apart from the support block (33).

3. A high torque and low friction stirring device according to claim 1, characterized in that: The magnetic drive mechanism further comprises a first gear (371) and a second gear (372); the output end of the driving member (34) is connected to the first gear (371); the second gear (372) is meshed with the first gear (371); and the second gear (372) is coaxially driven with the driving disk (32).

4. A high torque and low friction stirring device according to claim 1, characterized in that: The active disk (32) is provided with a first fixing member (36); the active magnet (321) is detachably connected to the active disk (32) via the first fixing member (36); The driven disk (42) is provided with a second fixing member (45); the driven magnet (421) is detachably connected to the driven disk (42) via the second fixing member (45).

5. A high torque and low friction stirring device according to claim 1, characterized in that: The center of the bottom of the driven disk (42) is recessed upward to form a rotating cavity (422); the stator (41) is arranged in the rotating cavity (422); the second supporting protrusion (43) is arranged between the top wall of the rotating cavity (422) and the top surface of the stator (41); and the side wall of the rotating cavity (422) is spaced apart from the stator (41).

6. A high torque and low friction stirring device according to claim 1, characterized in that: The stirring blade comprises an upwardly tilted blade (461) and a downwardly tilted blade (462). The number of the upward-curving blades (461) and the number of the downward-curving blades (462) are both plural, and the upward-curving blades (461) and the downward-curving blades (462) are arranged alternately.

7. A high torque and low friction stirring device according to claim 1, characterized in that: A bracket (31) is provided inside the outer shell (1); the bracket (31) and the inner shell (2) are respectively provided at two ends of the outer shell (1); the driving member (34) is provided on the bracket (31); A first buffer pad (47) is provided at the bottom of the stator (41); A second buffer pad (5) is provided at the bottom of the housing (1); The top of the outer shell (1) is connected to a cover body (6); the cover body (6) is detachably connected to the outer shell (1); A sealing ring (7) is provided between the outer shell (1) and the inner shell (2); A battery (81) and a connector (82) are provided in the housing (1); The outer shell (1) is provided with a heating tube (9) on the outer wall of the inner container (2).

8. A high torque and low friction stirring device according to claim 1, characterized in that: The shape of the first supporting protrusion (35) and / or the shape of the second supporting protrusion (43) is a sphere, a hemisphere, a cylinder, a torus, a cone, a cube, a cuboid or a trapezoid.

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