A food stirring motor with overload protection structure

Abstract

The present invention relates to the technical field of stirring equipment, and specifically discloses a food stirring motor with an overload protection structure, which is used to solve the problem of stirring overload in the prior art; the food stirring motor comprises a first shell, a second shell is fixedly provided on the upper end of the first shell, a power connection component for connecting electricity is provided on the outer side of the second shell, a driving shaft is rotatably provided at the center position of the second shell, a rotor is provided on the driving shaft, and a stator is fixedly provided on the inner wall of the second shell. The present invention is designed according to existing needs, and can avoid the problem of motor stalling and overloading due to excessive stirring damping, thereby ensuring the service life of the equipment. In addition, the stirring position can also float up and down, thereby avoiding stirring at one position all the time, thereby promoting the fluidity of the material. The floating up and down method also helps to actively avoid positions with large damping, thereby reducing the phenomenon of stalling due to stirring overload at a constant position.

Description

Technical Field

[0001] The invention relates to the technical field of stirring equipment, in particular to a food stirring motor with an overload protection structure. Background Art

[0002] Food blenders are commonly used tools in household life. This kind of blender can blend a variety of fruits and vegetables to squeeze out fresh and delicious fruit and vegetable juices. The working principle of a food blender is that the blade at the bottom of the blender cup rotates at high speed and repeatedly breaks the food under the action of water flow. The driving source of an existing food blender is a blender motor. The blender motor will encounter resistance when driving the blender blades to rotate. If the resistance is too large, the blender motor will be overloaded. The overload behavior will make the blender motor drive shaft unable to rotate, which is not conducive to improving the life of the blender motor.

[0003] The existing patent announcement number CN117358124B discloses a high-speed mixer with a self-cleaning function. The device can fully stir the materials, adapt to the moving trajectory of the stirring blades, and clean the stirring blades more accurately. Moreover, when the stirring shaft drives the stirring blades to rotate at a high speed, the stirring blades can generate a large friction force with the two rag-fixed metal sheets, thereby cleaning the chemical raw materials with high viscosity remaining on the stirring blades, which can greatly improve the cleaning effect of special-shaped blades such as stirring blades.

[0004] However, the stirring motor in the above stirring device lacks an overload mechanism. When the stirring is overloaded, the stirring motor is prone to stop rotating, which is not conducive to improving the life of the stirring motor.

[0005] Based on this, a food stirring motor with an overload protection structure is now provided to eliminate the drawbacks of the existing device. Summary of the invention

[0006] The purpose of the present invention is to provide a food stirring motor with an overload protection structure, which solves the problem of stirring overload in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A food stirring motor with an overload protection structure comprises a first shell, a second shell is fixedly provided on the upper end of the first shell, a power connection component for connecting electricity is provided on the outer side of the second shell, a drive shaft is rotatably provided at the center position of the second shell, a rotor is provided on the drive shaft, a stator is fixedly provided on the inner wall of the second shell, a graded heat dissipation component for gradually dissipating heat inside the second shell is provided on the second shell, a transmission through hole is provided at the lower end position of the first shell, a stirring shaft is provided at the transmission through hole position, and the drive shaft and the stirring shaft are transmission-connected via the overload protection component.

[0009] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0010] In an optional scheme: the overload protection component includes a reset side plate arranged on the outer side of the lower end of the driving shaft, the lower end of the driving shaft extends to the inside of the first shell, and a rotation limit protrusion is provided on the driving shaft on the lower side of the reset side plate, and a second friction disk is slidably provided on the driving shaft where the rotation limit protrusion is located, and the second friction disk and the reset side plate are connected by a second spring, and a first friction disk is fixedly provided at the upper end of the stirring shaft, and a conical protrusion is provided on the opposite surfaces of the first friction disk and the second friction disk, and an intermediate elliptical wheel is cooperated between the second friction disk and the first friction disk, and the intermediate elliptical wheel and the second friction disk and the first friction disk are connected by friction transmission, a fixed ring is fixedly provided at the bottom of the inner side of the first shell where the stirring shaft is located, and a rotating ring is rotatably provided at the upper end of the fixed ring, and the rotating ring is connected to the first friction disk by a first spring, and the intermediate elliptical wheel is connected to a transverse moving member used to drive it to move toward the axial position of the expansion cylinder.

[0011] In an optional scheme: the transverse moving member includes a rotating shaft rotatably connected to the center of the middle elliptical wheel, the other end of the rotating shaft is fixedly connected to the adjusting slide post, the adjusting slide post is slidably set on the guide sleeve, the guide sleeve is fixedly set on the first shell, an adjusting screw is matched in the threaded hole at the end of the guide sleeve, the adjusting screw is rotatably set on the guide sleeve, and an adjusting hand dial is provided at the end of the adjusting screw.

[0012] In an optional scheme: the graded heat dissipation component includes an isolation plate arranged inside the second shell, the isolation plate is arranged near the top of the second shell, an adjustment perforation is provided in the middle position of the isolation plate, and a rotating cylinder is provided at the position of the adjustment perforation, and a plurality of air intake guide blades for guiding the outside air to flow to the middle are distributed in an array on the outside of the rotating cylinder, an expansion pusher for pushing the rotating cylinder to move upward is provided at the upper end of the driving shaft, a plurality of heat dissipation blowing pipes for blowing air toward the inside of the second shell are provided at the lower end of the rotating cylinder, a plurality of first air intake notches for exhaust are also provided on the outside of the lower end of the second shell, a blocking member for driving the first air intake notch to be automatically blocked is also provided at the position of the first air intake notch, a plurality of second air intake notches are provided on the outside of the upper end of the second shell, and a filter for filtering air is provided at each second air intake notch.

[0013] In an optional solution: the graded heat dissipation component further includes a plurality of compression pipes inside the second shell, the compression pipes are pipe structures with a small inner end and a large outer end, and the outer end of the compression pipe corresponds to the position of the filter.

[0014] In an optional scheme: a semiconductor refrigeration plate is also provided on the top of the second shell, and the position of the semiconductor refrigeration plate corresponds to the position of the compression pipe. The cooling surface of the semiconductor refrigeration plate is located inside the second shell. A plurality of heat-conducting plates are distributed on the cooling surface of the semiconductor refrigeration plate. The lower end of the heat-conducting plate extends into the compression pipe. The semiconductor refrigeration plate is electrically connected to a trigger switch arranged at the top of the second shell. A central friction block is provided at the position of the trigger switch. An external blowing member is also provided on the upper end of the central friction block for dissipating heat from the heating end surface of the semiconductor refrigeration plate.

[0015] In an optional scheme: the external blowing part includes a power ring, the lower end of the power ring is connected to the central friction block through the central axis, the central axis is rotatably connected to the top of the second shell, a pushing block is provided at the opening position of the upper end of the power ring, and a plurality of side blowing pipes for blowing air outward are provided on the outer side of the power ring, and a plurality of heat dissipation fins are distributed on the upper end surface of the semiconductor refrigeration plate.

[0016] In an optional solution: the sealing member includes a sealing ring slidably arranged on the inner wall of the first shell, the sealing ring matches the first air inlet notch, and a rotating outer ring is rotatably arranged on the outer side of the lower end of the rotating cylinder, and the rotating outer ring is connected to the sealing ring through at least one traction connecting rod.

[0017] In an optional solution, the axis of the heat dissipation air blowing pipe is arranged at an acute angle to the axis of the drive shaft.

[0018] In an optional solution: the expansion pusher includes an expansion cylinder arranged at the upper end of the driving shaft, the piston cavity inside the expansion cylinder is filled with an expansion filler, the expansion filler can be mercury, the volume of the expansion filler will increase when heated, thereby triggering the optimization of the heat dissipation effect, an expansion piston block is slidably fitted in the piston cavity of the expansion cylinder, the upper end of the expansion piston block is connected to a push block through a connecting rod, and the push block is fixed to the middle position of the bottom of the rotating cylinder.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention is designed according to existing needs, and can avoid the problem of motor stalling and overloading due to excessive stirring damping, thereby ensuring the service life of the equipment. In addition, the stirring position can be made to float up and down, thereby avoiding stirring at one position all the time, thereby promoting the fluidity of the material. The up and down floating method can also help to actively avoid positions with greater damping, thereby reducing the phenomenon of stalling due to overload stirring at a constant position.

[0021] 2. The present invention avoids the problem of motor overheating and overload by dissipating heat from the motor, and the heat dissipation here is gradually increased according to the actual temperature inside the motor, and the principle of thermal expansion is used to trigger the gradual upgrade of heat dissipation, thereby meeting the actual heat dissipation needs.

[0022] 3. The present invention utilizes the contraction of the thermal expansion mechanism to block the air outlet of the motor when the device is not working, thereby preventing mosquitoes or dust from entering and improving the safety of the device;

[0023] 4. The present invention can also adjust the initial position of the stirring end according to actual needs, so as to adapt to the processing of materials of different depths and improve the adaptability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the lower side of the present invention.

[0026] Figure 3 It is a schematic diagram of the internal upper structure of the present invention.

[0027] Figure 4 It is a schematic diagram of the internal lower structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the upper structure of the second shell of the present invention.

[0029] Figure 6 It is a schematic diagram of the top structure inside the second shell of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the upper side of the rotating drum of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the lower side of the rotating drum of the present invention.

[0032] Fig. 9 It is a schematic diagram of the compression pipeline structure of the present invention.

[0033] Fig.10 It is a schematic diagram of the structure of the second friction disc and the first friction disc of the present invention.

[0034] Reference numerals: first housing 100, adjusting hand plate 101, guide sleeve 102, adjusting screw 103, adjusting slide post 104, rotating shaft 105, intermediate elliptical wheel 106, stirring shaft 108, first spring 109, first friction disc 111, rotation limiting protrusion 112, second friction disc 113, second spring 114, reset side plate 115, conical protrusion 116, rotating ring 118, fixing ring 117;

[0035] The second shell 200, the electrical connection component 201, the first air intake gap 202, the sealing ring 203, the traction link 204, the rotating outer ring 205, the second air intake gap 206, the filter 207, the side blow pipe 208, the power ring 209, the heat dissipation blades 210, the semiconductor refrigeration plate 211, the heat dissipation fins 212, the heat conductive plate 213, the compression pipe 214, the heat dissipation blow pipe 215, the rotating cylinder 216, the central friction block 217, the air intake guide blades 218, the push block 219, the expansion cylinder 220, the rotor 221, the drive shaft 222, the stator 223, the expansion piston block 224, the isolation plate 225, and the friction spring block 226. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1-Figure 10 As shown, an embodiment of the present invention provides a food stirring motor with an overload protection structure, including a first shell 100, a second shell 200 is fixedly provided on the upper end of the first shell 100, a power connection component 201 for connecting electricity is provided on the outer side of the second shell 200, a driving shaft 222 is rotatably provided at the center position of the second shell 200, a rotor 221 is provided on the driving shaft 222, a stator 223 is fixedly provided on the inner wall of the second shell 200, and a graded heat dissipation component for gradually dissipating heat inside the second shell 200 is provided. The graded heat dissipation component can automatically increase the heat dissipation effect when the passive heat dissipation inside the motor cannot meet the standard, thereby increasing the continuous working time of the motor and avoiding the problem of overheating. A transmission through hole is provided at the lower end position of the first shell 100, and a stirring shaft 108 is provided at the transmission through hole position. The driving shaft 222 and the stirring shaft 108 are connected by transmission through the overload protection component. When the stirring overload occurs, the transmission can be disconnected to avoid the problem of the rotor 221 and the stator 223 being relatively still, thereby achieving the purpose of overload protection.

[0038] The overload protection assembly includes a reset side plate 115 arranged on the outer side of the lower end of the drive shaft 222, the lower end of the drive shaft 222 extends to the inside of the first housing 100, and a rotation limiting protrusion 112 is provided on the drive shaft 222 at the lower side of the reset side plate 115. A second friction disc 113 is slidably provided on the drive shaft 222 where the rotation limiting protrusion 112 is located. The rotation limiting protrusion 112 matches the rotation limiting groove on the second friction disc 113, so that the second friction disc 113 can only slide on the drive shaft 222 and cannot rotate relative to the first housing 100. For rotation, the second friction disc 113 and the reset side plate 115 are connected by a second spring 114, a first friction disc 111 is fixedly provided on the upper end of the stirring shaft 108, and a conical protrusion 116 is provided on the opposite surfaces of the first friction disc 111 and the second friction disc 113, and an intermediate elliptical wheel 106 is provided between the second friction disc 113 and the first friction disc 111, and the intermediate elliptical wheel 106 and the second friction disc 113 and the first friction disc 111 are connected by friction transmission, and the stirring shaft 108 is fixedly provided with a first friction disc 111. A fixing ring 117 is fixedly provided at the bottom of the first shell 100 where 8 is located, and a rotating ring 118 is rotatably provided at the upper end of the fixing ring 117. The rotating ring 118 is connected to the first friction disk 111 through a first spring 109. Under the action of the first spring 109 and the second spring 114, the middle elliptical wheel 106 will be in tight contact with the upper and lower friction surfaces. When overload occurs, the middle elliptical wheel 106 and the second friction disk 113 will slip, and the power will be cut off, thereby playing a protective role. In addition, the middle elliptical wheel 106 here is an elliptical structure, so when the middle elliptical wheel 106 rotates, it will drive the first friction disk 111 up and down, which is conducive to the floating of the stirring position and improves the stirring effect. The middle elliptical wheel 106 is connected to a transverse member for driving it to move toward the axial position of the expansion cylinder 220. The transverse member can make the middle elliptical wheel 106 contact with the conical protrusion 116 and move along the generatrix of the conical protrusion 116, thereby adjusting the basic position of stirring at the lower end of the stirring shaft 108 to meet the stirring requirements of materials of different depths;

[0039] The transverse moving member includes a rotating shaft 105 rotatably connected to the center of the intermediate elliptical wheel 106, and the other end of the rotating shaft 105 is fixedly connected to the adjusting slide post 104, and the adjusting slide post 104 is slidably set on the guide sleeve 102, and the guide sleeve 102 is fixedly set on the first shell 100. An adjusting screw 103 is matched in the threaded hole at the end of the guide sleeve 102, and the adjusting screw 103 is rotatably set on the guide sleeve 102. An adjusting hand plate 101 is provided at the end of the adjusting screw 103, and the adjusting screw 103 and the adjusting slide post 104 are driven to rotate relative to each other by the adjusting hand plate 101. Under the action of the thread, the adjusting slide post 104 slides along the inside of the guide sleeve 102, thereby providing power for the transverse movement of the intermediate elliptical wheel 106. As the intermediate elliptical wheel 106 moves transversely, the initial positions of the second friction disk 113 and the first friction disk 111 will increase, so that the stirring position of the lower end of the stirring shaft 108 will also decrease;

[0040] The graded heat dissipation component includes an isolation plate 225 arranged inside the second shell 200, and the isolation plate 225 is arranged near the top of the second shell 200. An adjustment perforation is arranged in the middle of the isolation plate 225, and a rotating cylinder 216 is arranged in cooperation with the adjustment perforation. A plurality of air intake guide blades 218 for guiding the air outside to flow to the middle are arranged in an array outside the rotating cylinder 216, and an expansion pusher for pushing the rotating cylinder 216 to move upward is arranged at the upper end of the driving shaft 222. The rotating cylinder 216 can be driven to move upward by the expansion pusher. The more the rotating cylinder 216 is located above the air intake guide blades 218, the larger the effective working area of ​​the air intake guide blades 218 is, and the heat dissipation effect is improved. The effect is better. The lower end of the rotating cylinder 216 is provided with a plurality of heat dissipation blowing pipes 215 for blowing air toward the inside of the second shell 200. The lower end of the second shell 200 is also provided with a plurality of first air inlet notches 202 for exhaust. The first air inlet notches 202 are also provided with a blocking member for driving the automatic blocking thereof. When there is no need for blowing air for heat dissipation, the blocking ring 203 will automatically block the first air inlet notches 202 to prevent mosquitoes or dust from entering the inside of the second shell 200 along the blowing port. The upper end of the second shell 200 is provided with a plurality of second air inlet notches 206. Each second air inlet notch 206 is provided with a filter screen 207 for air filtration. The filter screen 207 can filter and remove dust from the intake air.

[0041] The hierarchical heat dissipation component further includes a plurality of compression pipes 214 inside the second housing 200. The compression pipes 214 are pipe structures with a small inner end and a large outer end. The outer end of the compression pipes 214 corresponds to the position of the filter 207, so that the air entering the filter 207 will flow along the compression pipes 214. During the flow, the gas will be compressed under the guidance of the contraction-shaped channel. When the compressed gas is ejected, the airflow will expand and do work externally, thereby reducing its own temperature, which is helpful for the subsequent heat dissipation.

[0042] A semiconductor refrigeration sheet 211 is also provided at the top of the second shell 200. The position of the semiconductor refrigeration sheet 211 corresponds to the position of the compression pipe 214. The cooling surface of the semiconductor refrigeration sheet 211 is located inside the second shell 200. A plurality of heat-conducting sheets 213 are distributed on the cooling surface of the semiconductor refrigeration sheet 211. The lower end of the heat-conducting sheet 213 extends into the compression pipe 214, so that the temperature of the air flow passing through the compression pipe 214 can be further reduced. The semiconductor refrigeration sheet 211 is electrically connected to a trigger switch provided at the top of the second shell 200. A central friction block 217 is provided at the trigger switch position. When the rotating cylinder 216 moves upward to the set position, the friction block 226 at the top of the rotating cylinder 216 will contact the central friction block 217. When in contact, the trigger switch will be squeezed, so that the semiconductor refrigeration sheet 211 works. An external blowing piece is also provided at the upper end of the central friction block 217 for dissipating heat from the heating end surface of the semiconductor refrigeration sheet 211. The cooling effect of the semiconductor refrigeration sheet 211 is maintained by dissipating heat from the external blowing piece.

[0043] The external air blowing member includes a power ring 209, the lower end of which is connected to the central friction block 217 through a central axis, and the central axis is rotatably connected to the top of the second shell 200. A push block 219 is provided at the upper opening position of the power ring 209, and a plurality of side blowing pipes 208 for blowing outward are provided on the outer side of the power ring 209. A plurality of heat dissipation fins 212 are distributed on the upper end surface of the semiconductor refrigeration plate 211, so that when the friction block 226 contacts the central friction block 217, the central friction block 217 is driven to rotate while triggering the semiconductor refrigeration plate 211 to work. The central friction block 217 drives the power ring 209 to rotate through the central axis, and the power ring 209 drives the heat dissipation blades 210 to rotate, so that air enters the power ring 209 from top to bottom, and then the air is sprayed along the side blowing pipe 208 to the heat dissipation fins 212, so as to dissipate the heat of the heating end surface of the semiconductor refrigeration plate 211. The side blowing pipe 208 is a conical structure, which helps to improve the heat dissipation effect.

[0044] The blocking member includes a blocking ring 203 slidably arranged on the inner wall of the first housing 100, the blocking ring 203 matches the first air inlet notch 202, and a rotating outer ring 205 is rotatably arranged on the outer side of the lower end of the rotating cylinder 216, and the rotating outer ring 205 is connected to the blocking ring 203 through at least one traction link 204, so at the initial time, the expansion pusher is not triggered, and the rotating cylinder 216 does not move upward, so the blocking ring 203 blocks the first air inlet notch 202 at this time, and as the expansion pusher drives the rotating cylinder 216 to move upward, the first air inlet notch 202 will gradually move upward, thereby canceling the obstruction to the first air inlet notch 202;

[0045] The axis of the heat dissipation air blowing pipe 215 is set at an acute angle with the axis of the drive shaft 222, so that the airflow blown in can form a rotating airflow, which helps to improve the heat dissipation effect;

[0046] The expansion pusher includes an expansion cylinder 220 arranged at the upper end of the driving shaft 222, and the piston cavity inside the expansion cylinder 220 is filled with an expansion filler, which can be mercury. The expansion filler will increase in volume when heated, thereby triggering the optimization of the heat dissipation effect. An expansion piston block 224 is slidably matched in the piston cavity of the expansion cylinder 220, and the upper end of the expansion piston block 224 is connected to a push block 219 through a connecting rod. The push block 219 is fixed to the middle position of the bottom of the rotating cylinder 216, so that the internal heat of the second shell 200 can be used to heat the expansion cylinder 220, so that the expansion filler inside it expands, so that the expansion piston block 224 will drive the push block 219 to move upward, and the push block 219 will push the rotating cylinder 216 to move upward, so that the intake guide vane 218 moves to above the isolation plate 225, increasing the effective blowing area. That is to say, if the internal temperature of the second shell 200 is higher, the air flow rate blown into the second shell 200 will be larger, thereby improving the heat dissipation effect.

[0047] Working principle: In actual use, the rotor 221 and the stator 223 are matched to drive the driving shaft 222 to rotate rapidly, the driving shaft 222 drives the second friction disk 113 to rotate, the second friction disk 113 drives the intermediate elliptical wheel 106 to rotate, and the friction between the intermediate elliptical wheel 106 and the first friction disk 111 drives the stirring shaft 108 to rotate. When overload occurs, the intermediate elliptical wheel 106 and the second friction disk 113 will slip, and the power will be cut off, thereby playing a protective role. In addition, the intermediate elliptical wheel 106 here is an elliptical structure, so when the intermediate elliptical wheel 106 rotates, it will drive the first friction disk 111 up and down, thereby facilitating the floating of the stirring position and improving the stirring effect;

[0048] The adjusting screw 103 and the adjusting slide post 104 are driven to rotate relative to each other by adjusting the hand plate 101. Under the action of the thread, the adjusting slide post 104 slides along the inside of the guide sleeve 102, thereby providing power for the lateral movement of the middle elliptical wheel 106. As the middle elliptical wheel 106 moves laterally, the initial positions of the second friction disc 113 and the first friction disc 111 will increase, so that the stirring position of the lower end of the stirring shaft 108 will also decrease.

[0049] When there is no need to blow air for heat dissipation, the blocking ring 203 will automatically block the first air inlet notch 202 to prevent mosquitoes or dust from entering the second shell 200 along the air blowing port. When the passive heat dissipation of the second shell 200 cannot meet the requirements, the temperature inside the second shell 200 will rise, the expansion pusher will be activated by heat, the expansion piston block 224 will drive the push block 219 to move upward, and the push block 219 will push the rotating cylinder 216 to move upward, so that the air intake guide blade 218 moves to above the isolation plate 225, increasing the effective air blowing area. In other words, if the temperature inside the second shell 200 is higher, the air flow rate blown into the second shell 200 will be greater, thereby improving the heat dissipation effect;

[0050] As the rotating cylinder 216 continues to move upward, when the rotating cylinder 216 moves upward to the set position, the friction block 226 on the top of the rotating cylinder 216 will contact the central friction block 217, and when in contact, it will squeeze the trigger switch, thereby making the semiconductor refrigeration plate 211 work. The upper end of the central friction block 217 is also provided with an external blowing piece for dissipating the heat from the heated end surface of the semiconductor refrigeration plate 211. The cooling effect of the semiconductor refrigeration plate 211 is maintained by dissipating the heat through the external blowing piece.

[0051] The heat dissipation here is successively: passive heat dissipation, active heat dissipation and heat dissipation in conjunction with the principle of semiconductor refrigeration, achieving a multi-level heat dissipation effect and maximizing the requirements for long-term operation of the motor.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A food stirring motor with an overload protection structure, comprising a first housing (100), a second housing (200) being fixedly disposed on the upper end of the first housing (100), and a power connection component (201) for connecting electricity being disposed on the outer side of the second housing (200), characterized in that: A drive shaft (222) is rotatably provided at the center of the second housing (200), a rotor (221) is provided on the drive shaft (222), a stator (223) is fixedly provided on the inner wall of the second housing (200), a graded heat dissipation component for gradually dissipating heat inside the second housing (200) is provided on the second housing (200), a transmission through hole is provided at the lower end of the first housing (100), a stirring shaft (108) is provided at the transmission through hole, and the drive shaft (222) and the stirring shaft (108) are transmission-connected via an overload protection component. The overload protection assembly comprises a reset side plate (115) arranged on the outer side of the lower end of the drive shaft (222); the lower end of the drive shaft (222) extends into the interior of the first housing (100); a rotation limiting protrusion (112) is provided on the drive shaft (222) below the reset side plate (115); a second friction disc (113) is slidably provided on the drive shaft (222) where the rotation limiting protrusion (112) is located; the second friction disc (113) and the reset side plate (115) are connected via a second spring (114); a first friction disc (111) is fixedly provided on the upper end of the stirring shaft (108); and a cone is provided on the opposing surfaces of the first friction disc (111) and the second friction disc (113). shaped protrusion (116), an intermediate elliptical wheel (106) is provided between the second friction disc (113) and the first friction disc (111), the intermediate elliptical wheel (106) and the second friction disc (113) and the first friction disc (111) are connected via friction transmission, a fixed ring (117) is fixedly provided at the bottom of the first housing (100) where the stirring shaft (108) is located, a rotating ring (118) is rotatably provided at the upper end of the fixed ring (117), the rotating ring (118) is connected to the first friction disc (111) via a first spring (109), and the intermediate elliptical wheel (106) is connected to a transverse member for driving it to move toward the axial position of the expansion cylinder (220); The transverse moving member comprises a rotating shaft (105) rotatably connected to the center of the middle elliptical wheel (106); the other end of the rotating shaft (105) is fixedly connected to an adjusting slide post (104); the adjusting slide post (104) is slidably arranged on a guide sleeve (102); the guide sleeve (102) is fixedly arranged on a first housing (100); an adjusting screw (103) is matched in a threaded hole at the end of the guide sleeve (102); the adjusting screw (103) is rotatably arranged on the guide sleeve (102); and an adjusting hand plate (101) is arranged at the end of the adjusting screw (103).

2. The food stirring motor with overload protection structure according to claim 1, characterized in that: The graded heat dissipation assembly comprises an isolation plate (225) arranged inside the second housing (200), the isolation plate (225) being arranged close to the top of the second housing (200), an adjustment hole being arranged in the middle of the isolation plate (225), a rotating cylinder (216) being arranged in coordination with the adjustment hole, a plurality of air intake guide blades (218) being arranged in an array outside the rotating cylinder (216) for guiding the outside air to flow toward the middle, and a shaft for pushing the rotating cylinder (216) to move upward is arranged at the upper end of the driving shaft (222). An expansion pusher, a plurality of heat dissipation air blowing pipes (215) for blowing air toward the inside of the second shell (200) are provided at the lower end of the rotating cylinder (216), a plurality of first air inlet notches (202) for exhausting air are also provided on the outer side of the lower end of the second shell (200), a blocking member for driving the first air inlet notches (202) to be automatically blocked is also provided at the position of the first air inlet notches (202), a plurality of second air inlet notches (206) are provided on the outer side of the upper end of the second shell (200), and a filter (207) for filtering air is provided at the position of each second air inlet notch (206).

3. The food stirring motor with overload protection structure according to claim 2, characterized in that: The graded heat dissipation component further comprises a plurality of compression pipes (214) inside the second housing (200), the compression pipes (214) being a pipe structure with a small inner end and a large outer end, the outer end of the compression pipe (214) corresponding to the position of the filter screen (207).

4. The food stirring motor with overload protection structure according to claim 2, characterized in that: A semiconductor refrigeration sheet (211) is also provided at the top of the second shell (200), the position of the semiconductor refrigeration sheet (211) corresponds to the position of the compression pipe (214), the cooling surface of the semiconductor refrigeration sheet (211) is located inside the second shell (200), a plurality of heat conducting sheets (213) are distributed on the cooling surface of the semiconductor refrigeration sheet (211), the lower end of the heat conducting sheet (213) extends into the compression pipe (214), the semiconductor refrigeration sheet (211) is electrically connected to a trigger switch arranged at the top of the second shell (200), a central friction block (217) is provided at the position of the trigger switch, and an external blowing member for dissipating heat from the heating end surface of the semiconductor refrigeration sheet (211) is also provided at the upper end of the central friction block (217).

5. The food stirring motor with overload protection structure according to claim 4, characterized in that: The external blowing member comprises a power ring (209), the lower end of the power ring (209) is connected to a central friction block (217) via a central axis, the central axis is rotatably connected to the top of the second shell (200), a push block (219) is provided at an opening position at the upper end of the power ring (209), a plurality of side blowing pipes (208) for blowing air outward are provided on the outer side of the power ring (209), and a plurality of heat dissipation fins (212) are distributed on the upper end surface of the semiconductor cooling plate (211).

6. The food stirring motor with overload protection structure according to claim 2, characterized in that: The sealing member comprises a sealing ring (203) slidably arranged on the inner wall of the first shell (100), the sealing ring (203) matching the first air inlet notch (202), and a rotating outer ring (205) rotatably arranged on the outer side of the lower end of the rotating cylinder (216), the rotating outer ring (205) being connected to the sealing ring (203) via at least one traction connecting rod (204).

7. The food stirring motor with overload protection structure according to claim 2, characterized in that: The axis of the heat dissipation air blowing pipe (215) and the axis of the driving shaft (222) are arranged at an acute angle.

8. The food stirring motor with overload protection structure according to claim 2, characterized in that: The expansion pusher comprises an expansion cylinder (220) arranged at the upper end of a driving shaft (222); an internal piston cavity of the expansion cylinder (220) is filled with an expansion filler, which is mercury. When heated, the expansion filler increases in volume, thereby triggering optimization of the heat dissipation effect; an expansion piston block (224) is slidably fitted in the piston cavity of the expansion cylinder (220); the upper end of the expansion piston block (224) is connected to a push block (219) via a connecting rod; and the push block (219) is fixed to the middle position of the bottom of the rotating cylinder (216).

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