A stirring motor for food processing

Abstract

The invention discloses a stirring motor for food processing, belonging to the field of motors. The stirring motor mainly consists of a motor housing, a stator winding, an output shaft, a rotor, a magnetic pole frame, a control mechanism, a transmission mechanism and a permanent magnet, wherein the magnetic pole frame can be switched between a flipping state and a vertical state; when the magnetic pole frame is in the vertical state, the magnetic field generated by the permanent magnet and the magnetic field generated by the stator winding interact with each other; when the magnetic pole frame is in the flipping state, the magnetic field generated by the permanent magnet and the magnetic field generated by the stator winding do not interact; the transmission mechanism is used to drive each group of magnetic pole frames to switch working states; the control mechanism and the transmission mechanism cooperate to control each group of magnetic pole frames to switch working states in sequence; the invention changes the number of revolutions by changing the number of magnetic poles on the rotor, so that the invention can change the number of revolutions of the motor under normal power, can prolong the service life, and can switch between high speed, medium speed and low speed, is easy to operate, has a compact structure, and can adapt to different working conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a stirring motor used for food processing. Background Art

[0002] In the process of food manufacturing, uniform mixing of food is a very necessary process. At present, stirring equipment is generally used to complete the work of food mixing. Since there are many types of food that need to be mixed, it is necessary to select the stirring method according to the type of food when performing the mixing work. When the food needs to be quickly dispersed and mixed, the stirring equipment is required to provide fast, small torque stirring, and when the food needs to be gently mixed, the stirring equipment is required to provide slow, large torque stirring. In the prior art, when the number of motor speeds in the stirring equipment needs to be adjusted, it is generally adjusted by changing the frequency of the AC power through a frequency converter, which is expensive. This method not only requires the motor to be equipped with a control device, which is complicated to operate and difficult to control, but also reduces the efficiency of the motor, increases losses, causes additional heat, and reduces the service life of the motor. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a stirring motor for food processing.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stirring motor for food processing, comprising: a motor housing, a stator winding, an output shaft and a rotor, wherein a shell cavity is provided in the motor housing, a plurality of stator windings are provided, and are respectively evenly distributed in the shell cavity along the circumferential direction, the output shaft is rotatably arranged in the motor housing, the rotor is rotatably arranged in the shell cavity, and the rotor and the output shaft are fixedly connected; this embodiment also includes: a magnetic pole frame, a control mechanism, a transmission mechanism, and a permanent magnet; a plurality of rotor slots are evenly distributed on the rotor along the circumferential direction, a plurality of rotor bosses are evenly distributed on the rotor along the circumferential direction, and the rotor slots and the rotor bosses are staggered; a magnetic pole frame is provided in each of the rotor slots, and every two magnetic pole frames form a group, and the two magnetic pole frames in each group are symmetrically arranged relative to the output shaft, so that The magnetic pole frame can be switched between a flipping state and a vertical state; a plurality of permanent magnets are provided, and the plurality of permanent magnets are fixedly arranged on the rotor boss and the magnetic pole frame respectively; when the magnetic pole frame is in a vertical state, the permanent magnets on the magnetic pole frame face the radial direction of the output shaft, and the magnetic field generated by the permanent magnets and the magnetic field generated by the stator winding interact with each other; when the magnetic pole frame is in a flipping state, the permanent magnets on the magnetic pole frame face the axial direction of the output shaft, and the magnetic field generated by the permanent magnets and the magnetic field generated by the stator winding do not interact with each other; the transmission mechanism is slidably arranged on the rotor to drive each group of the magnetic pole frames to switch the working state; the control mechanism is fixedly arranged on the left side of the motor housing, and the control mechanism cooperates with the transmission mechanism to control each group of magnetic pole frames to switch the working state in sequence.

[0005] Preferably, the pole frame comprises: a pole block, a first connecting rod and a second connecting rod; a vertical rod is provided below the pole block, and the permanent magnet is fixedly arranged on the pole block; one end of the first connecting rod is hinged in the rotor slot, and the other end is hinged to the side of the vertical rod close to the pole block, and a first connecting rod slot is axially provided on the first connecting rod; one end of the second connecting rod is hinged in the rotor slot, and the other end is hinged to the side of the vertical rod away from the pole block.

[0006] Preferably, the transmission mechanism includes: a first transmission component and a second transmission component; the first transmission component is provided with multiple sets, each two sets form a group, and each group of first transmission components corresponds to a group of magnetic pole frames; the second transmission component is provided with multiple sets, each two sets form a group, and each group of second transmission components corresponds to a group of magnetic pole frames; the first transmission component includes a first transmission rod and a first transmission spring; the first transmission rod is slidably arranged in the rotor, one end of the first transmission rod is radially provided with a first transmission pin, and the other end is radially provided with a first pulling pin, and the first transmission pin is slidably arranged in the first connecting rod groove; the first transmission spring is arranged in the rotor to drive the first transmission rod to move right; the second transmission component includes a second transmission rod and a second transmission spring; the second transmission rod is slidably arranged in the rotor, one end of the second transmission rod is radially provided with a second transmission pin, and the other end is radially provided with a second pulling pin, and the second transmission pin is slidably arranged in the first connecting rod groove; the second transmission spring is arranged in the rotor to drive the second transmission rod to move right.

[0007] Preferably, the control mechanism comprises: a control cylinder, a first sleeve, a second sleeve, a third sleeve, a first sliding pin and a second sliding pin; the control cylinder is fixedly arranged on the left side of the motor housing, and the control cylinder is provided with a cylinder annular groove along the inner circumference; the first sleeve is slidably arranged in the control cylinder, a first pulling groove is provided on the right side of the first sleeve along the outer circumference, the second pulling pin is slidably arranged in the first pulling groove, and a first annular groove is provided on the left side of the first sleeve along the outer circumference; the second sleeve is sleeved on the first sleeve, a first sleeve hole is provided in the radial direction on the left side of the second sleeve, and a first sleeve hole is provided in the radial direction on the right side of the second sleeve A second annular groove is provided on the outer circumferential surface; the third sleeve is sleeved on the second sleeve, a third annular groove is provided along the inner circumferential surface on the left side of the third sleeve, and a second pulling groove is provided along the inner circumferential surface on the right side of the third sleeve, the first pulling pin is slidably arranged in the second pulling groove, and a second sleeve hole is radially arranged between the third annular groove and the second pulling groove; the first sliding pin is slidably arranged in the second sleeve hole, and the first sliding pin can switch between the barrel annular groove and the second annular groove; the second sliding pin is slidably arranged in the first sleeve hole, and the second sliding pin can switch between the third annular groove and the first annular groove.

[0008] Preferably, it further comprises an electric push rod; the electric push rod is fixedly arranged on the control cylinder, and the telescopic end of the electric push rod is fixedly connected to the second sliding sleeve.

[0009] Preferably, the number of the stator windings is greater than the number of the permanent magnets.

[0010] Preferably, when the first sliding pin is placed in the annular groove of the cylinder, the second sliding pin is placed in the first annular groove, the second sliding sleeve is fixedly connected to the first sliding sleeve, and the third sliding sleeve is fixedly connected to the control cylinder.

[0011] Preferably, when the first sliding pin is placed in the second annular groove, the second sliding pin is placed in the third annular groove, the second sliding sleeve is fixedly connected to the third sliding sleeve, and the first sliding sleeve is positioned under the action of the second transmission assembly.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. By providing a magnetic pole frame with switchable states, the number of magnetic poles working in the present invention is changed by switching the state of the magnetic pole frame, and the speed of the motor is changed, so that the present invention is in a normal voltage and frequency state during operation, with low energy loss, reduced heat generation, and can effectively extend the service life of the present invention;

[0014] 2. By setting up a transmission mechanism, due to the cooperation between the transmission mechanism and the magnetic pole frame, the magnetic pole frames of the same group of the present invention can be in the switching state at the same time, thereby realizing the change of the number of magnetic poles, which is simple to operate and convenient to control;

[0015] 3. By setting up a control mechanism, the operation of the control mechanism can drive different groups of magnetic pole frames to switch states in sequence, thereby realizing a gradual change in the number of magnetic poles of the present invention, so that the rotation speed of the present invention can be switched between high speed, medium speed and low speed. The operation is convenient, the structure is compact, and it can adapt to different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the present invention at a low speed;

[0017] Figure 2 For the present invention Figure 1 Section view in the AA direction;

[0018] Figure 3 It is a cross-sectional view of the present invention at the highest speed;

[0019] Figure 4 For the present invention Figure 3 Cross-sectional view in the middle BB direction;

[0020] Figure 5 For the present invention Figure 1 The enlarged image at point I in the middle;

[0021] Figure 6 For the present invention Figure 3 Enlarged view of II in the middle;

[0022] Figure 7 For the present invention Figure 3 Enlarged view of point III in the middle. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings.

[0024] Combination Figure 1-Figure 7 As shown, a stirring motor for food processing in this embodiment comprises: a motor housing 1, a stator winding 2, an output shaft 3 and a rotor 4, a shell cavity is provided in the motor housing 1, a plurality of stator windings 2 are provided, and are respectively evenly distributed in the shell cavity along the circumferential direction, the output shaft 3 is rotatably arranged in the motor housing 1, the rotor 4 is rotatably arranged in the shell cavity, and the rotor 4 is fixedly connected to the output shaft 3; this embodiment also comprises: a magnetic pole frame 5, a control mechanism 6, a transmission mechanism 7, and a permanent magnet 8; a plurality of rotor slots 42 are evenly distributed on the rotor 4 along the circumferential direction, a plurality of rotor bosses 41 are evenly distributed on the rotor 4 along the circumferential direction, and the rotor slots 42 and the rotor bosses 41 are staggered; a magnetic pole frame 5 is provided in each rotor slot 42, and every two magnetic pole frames 5 form a group, and the two magnetic pole frames 5 in each group are symmetrically arranged relative to the output shaft 3, and the magnetic pole frames 5 in each group are symmetrically arranged relative to the output shaft 3. The pole frame 5 can switch between a flipping state and a vertical state; a plurality of permanent magnets 8 are provided, and the plurality of permanent magnets 8 are fixedly arranged on the rotor boss 41 and the pole frame 5 respectively; when the pole frame 5 is in a vertical state, the permanent magnets 8 on the pole frame 5 face the radial direction of the output shaft 3, and the magnetic field generated by the permanent magnets 8 and the magnetic field generated by the stator winding 2 interact with each other; when the pole frame 5 is in a flipping state, the permanent magnets 8 on the pole frame 5 face the axial direction of the output shaft 3, and the magnetic field generated by the permanent magnets 8 and the magnetic field generated by the stator winding 2 do not interact with each other; the transmission mechanism 7 is slidably arranged on the rotor 41 to drive each group of pole frames 5 to switch the working state; the control mechanism 6 is fixedly arranged on the left side of the motor housing 1, and the control mechanism 6 cooperates with the transmission mechanism 7 to control each group of pole frames 5 to switch the working state in sequence.

[0025] Combination Figure 1-Figure 6 As shown, in this embodiment, the pole frame 5 includes: a pole block 51, a first connecting rod 52 and a second connecting rod 53; a vertical rod 511 is provided below the pole block 51, and the permanent magnet 8 is fixedly arranged on the pole block 51; one end of the first connecting rod 52 is hinged in the rotor slot 42, and the other end is hinged to the side of the vertical rod 511 close to the pole block 51, and a first connecting rod slot 521 is axially provided on the first connecting rod 52; one end of the second connecting rod 53 is hinged in the rotor slot 42, and the other end is hinged to the side of the vertical rod 511 away from the pole block 51.

[0026] At this time, by means of the magnetic pole frame 5 with switchable states, the number of magnetic poles working in the present invention is changed by switching the state of the magnetic pole frame 5, and then the rotation speed of the present invention is changed, so that the present invention is in a normal voltage and frequency state when working, with small energy loss, reduced heat generation, and can effectively extend the service life of the present invention.

[0027] Combination Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, in this embodiment, the transmission mechanism 7 includes: a first transmission component and a second transmission component; the first transmission component is provided with multiple sets, each two sets form a group, and each set of the first transmission component corresponds to a group of magnetic pole frames 5; the second transmission component is provided with multiple sets, each two sets form a group, and each set of the second transmission component corresponds to a group of magnetic pole frames 5; the first transmission component includes a first transmission rod 71 and a first transmission spring 731; the first transmission rod 71 is slidably arranged in the rotor 4, one end of the first transmission rod 71 is provided with a first transmission pin 711 in the radial direction, and the other end is provided with a first pull pin 712 in the radial direction, and the first transmission pin 711 is slidably arranged in the first connecting rod groove 521; the first transmission spring 731 is arranged in the rotor 4 to drive the first transmission rod 71 to move rightward; the second transmission assembly includes a second transmission rod 72 and a second transmission spring 732; the second transmission rod 72 is slidably arranged in the rotor 4, and a second transmission pin 721 is radially provided at one end of the second transmission rod 72, and a second pulling pin 722 is radially provided at the other end, and the second transmission pin 712 is slidably arranged in the first connecting rod groove 521; the second transmission spring 732 is arranged in the rotor 4 to drive the second transmission rod 72 to move rightward.

[0028] At this time, with the help of the transmission mechanism 7, through the cooperation between the transmission mechanism 7 and the magnetic pole frame 5, the magnetic pole frames 5 of the same group of the present invention can be in the switching state at the same time, thereby realizing the change of the number of magnetic poles, which is simple to operate and convenient to control.

[0029] Combination Figure 1 , Figure 3 , Figure 4 , Figure 7As shown, in this embodiment, the control mechanism 6 includes: a control cylinder 61, a first sliding sleeve 62, a second sliding sleeve 63, a third sliding sleeve 64, a first sliding pin 651 and a second sliding pin 652; the control cylinder 61 is fixedly arranged on the left side of the motor housing 1, and the control cylinder 61 is provided with a cylinder annular groove 611 along the inner circumferential surface; the first sliding sleeve 62 is slidably arranged in the control cylinder 61, and a first pulling groove 622 is provided along the outer circumferential surface on the right side of the first sliding sleeve 62, and the second pulling pin 722 is slidably arranged in the first pulling groove 622, and a first annular groove 621 is provided along the outer circumferential surface on the left side of the first sliding sleeve 62; the second sliding sleeve 63 is sleeved on the first sliding sleeve 62, and a first sliding sleeve hole is provided radially on the left side of the second sliding sleeve 63, and a first sliding sleeve hole is provided on the right side of the second sliding sleeve 63 A second annular groove 631 is provided along the outer circumferential surface; the third sleeve 64 is sleeved on the second sleeve 63, a third annular groove 641 is provided along the inner circumferential surface on the left side of the third sleeve 63, and a second pulling groove 642 is provided along the inner circumferential surface on the right side of the third sleeve 63, the first pulling pin 712 is slidably arranged in the second pulling groove 642, and a second sleeve hole is radially arranged between the third annular groove 641 and the second pulling groove 642; the first sliding pin 651 is slidably arranged in the second sleeve hole, and the first sliding pin 651 can switch between the barrel annular groove 611 and the second annular groove 631; the second sliding pin 652 is slidably arranged in the first sleeve hole, and the second sliding pin 652 can switch between the third annular groove 641 and the first annular groove 621.

[0030] At this time, with the help of the control mechanism 6, the operation of the control mechanism 6 can drive different groups of magnetic pole frames 5 to switch states in sequence, thereby realizing the gradual change of the number of magnetic poles of the present invention, so that the rotation speed of the present invention can be switched between high speed, medium speed and low speed. The operation is convenient, the structure is compact, and it can adapt to different working conditions.

[0031] Combination Figure 1 , Figure 3 As shown, in this embodiment, an electric push rod 9 is also included; the electric push rod 9 is fixedly arranged on the control cylinder 61, and the telescopic end of the electric push rod 9 is fixedly connected to the second sliding sleeve 63.

[0032] Combination Figure 2 As shown, in this embodiment, the number of stator windings 2 is greater than the number of permanent magnets 8 .

[0033] Combination Figure 1 As shown, in this embodiment, when the first sliding pin 651 is placed in the cylinder annular groove 611, the second sliding pin 652 is placed in the first annular groove 621, the second sliding sleeve 63 is fixedly connected to the first sliding sleeve 62, and the third sliding sleeve 64 is fixedly connected to the control cylinder 61.

[0034] Combination Figure 3 , Figure 7As shown, in this embodiment, when the first sliding pin 651 is placed in the second annular groove 631, the second sliding pin 652 is placed in the third annular groove 641, the second sliding sleeve 63 and the third sliding sleeve 64 are fixedly connected, and the first sliding sleeve 62 is positioned under the action of the second transmission assembly.

[0035] The working principle of this stirring motor for food processing is as follows:

[0036] like Figure 1 The figure shows the internal structure of the present invention at the lowest speed. When the stirring device of the present invention is used to stir food, a three-phase AC power supply needs to be firstly supplied to the present invention, and a rotating magnetic field is generated by the stator winding 2. The rotating magnetic field interacts with the magnetic field generated by the permanent magnet 8 to drive the rotor 4 to rotate, so that the output shaft 3 rotates to output torque, and then drives the stirring rod in the mixer to stir the food. Since the magnetic pole frames 5 in the present invention are all in a vertical state at this time, the permanent magnets 8 in the present invention are all working, and the number of magnetic poles is the largest, so that the present invention has the lowest speed and the maximum output torque.

[0037] When the present invention needs to switch from the highest speed to the medium speed, the control electric push rod 9 is extended to drive the second sliding sleeve 63 to move to the right. Since the second sliding pin 652 slides and cooperates in the first sliding sleeve hole, one end of the second sliding pin 652 is in the first annular groove 621, and the other end is pressed against the inner wall of the third sliding sleeve 64, so that the second sliding sleeve 63 and the first sliding sleeve 62 are fixedly connected. At the same time, since the first sliding pin 651 slides and cooperates in the second sliding sleeve hole, one end of the first sliding pin 651 is in the cylinder annular groove 611, and the other end is pressed against the outer circumferential wall of the second sliding sleeve 63, so that the third sliding sleeve 64 and the control cylinder 61 are fixedly connected. When the second sliding sleeve 63 moves to the right, it drives the first sliding sleeve 62 to move to the right, and the third sliding sleeve 64 remains stationary. Since the second pulling pin 722 is slidably arranged in the first pulling groove 622, and the first pulling pin 712 is slidably arranged in the second pulling groove 642, the first sliding sleeve 62 moves to the right and drives a group of second transmission rods 72 to move to the right at the same time. Since the second transmission pin 721 slides and cooperates in the first connecting rod groove 521, it drives the first connecting rod 52 to swing to the right. Through the cooperation between the second connecting rod 53 and the vertical rod 511, it drives the magnetic pole block 51 to flip while swinging to the right, so that the permanent magnet 8 fixed on the magnetic pole block 51 turns to the right and away from the stator winding 2. Moreover, since the magnetic pole orientation of the permanent magnet 8 changes, the magnetic field generated by the stator sleeve winding 2 has no effect on the permanent magnet 8. When the permanent magnet 8 on this group of magnetic pole frames 5 flips 90 degrees and faces the right side, the electric push rod 9 is controlled to stop. At this time, the third annular groove 641 and the second sliding pin 652 are not aligned, and the second annular groove 631 and the first sliding pin 651 are not aligned, so that the third sliding sleeve 64 is positioned, and the magnetic pole frame 5 corresponding to the third sliding sleeve 64 remains in a vertical state. The present invention provides medium speed and medium torque output;

[0038] When the present invention needs to switch from medium speed to maximum speed, the control electric push rod 9 continues to extend, driving the second sliding sleeve 63 to continue to move to the right. When the third annular groove 641 and the second sliding pin 652 are aligned, and the second annular groove 631 and the first sliding pin 651 are aligned, the first sliding sleeve 62 is pressed against the rotor 4 and cannot continue to move to the right. At this time, the magnetic pole frame 5 corresponding to the first sliding sleeve 62 is in a flipping state. As the second sliding sleeve 63 continues to move to the right, and both ends of the first sliding pin 651 and the second sliding pin 652 are both ball head structures, due to the action of the first transmission spring 731, the first transmission rod 71 drives the third sliding sleeve 64 to move to the right, so that the first sliding pin 651 exits the cylinder annular groove 611 and enters the second annular groove 631, so that the second sliding sleeve 63 and the third sliding sleeve 64 are fixedly connected, and the second sliding pin 652 exits the first annular groove 621 and enters the third annular groove The shaped groove 641 separates the first sliding sleeve 62 and the second sliding sleeve 63, so that the third sliding sleeve 64 moves to the right following the second sliding sleeve 63. Since the first pulling pin 712 slides and cooperates in the second pulling groove 642, a group of first transmission rods 71 ​​are driven to move to the right. Since the first transmission pin 711 slides and cooperates in the first connecting rod groove 521, the first connecting rod 52 is driven to swing to the right. Through the cooperation between the second connecting rod 53 and the vertical rod 511, the magnetic pole block 51 is driven to flip while swinging to the right. When the third sliding sleeve 64 touches the rotor 4, the corresponding magnetic pole frame 5 is switched to the flipping state, and the electric push rod 9 is stopped. Since all the magnetic pole frames 5 are kept in the flipping state under the action of the first transmission spring 731 and the second transmission spring 732 at this time, the number of effective magnetic poles in the present invention is the least, so that the present invention can provide the highest speed and the minimum torque.

[0039] When the present invention needs to switch from the highest speed to the medium speed, the electric push rod 9 is controlled to retract. At this time, the second sliding sleeve 63 and the third sliding sleeve 64 are fixedly matched by the first sliding pin 651 and the second sliding pin 652, thereby driving the third sliding sleeve 64 to move left, driving the first transmission rod 71 to overcome the first transmission spring 731 to move left, and the first transmission pin 711 slides in the first connecting rod groove 521, thereby driving the first connecting rod 52 to swing left, and through the cooperation of the second connecting rod 53 and the vertical rod 511, the magnetic pole block 51 is turned over. When the first sliding pin 651 is aligned with the cylinder annular groove 611, and the second sliding pin 652 is aligned with the first annular groove 621, the first connecting rod 52 is turned left. The magnetic pole frame 5 corresponding to a transmission rod 71 is switched to a vertical state, and the electric push rod 9 is controlled to continue to shrink, so that when the first sliding pin 651 exits the second annular groove 631 and enters the cylindrical annular groove 611, the second sliding pin 652 exits the third annular groove 641 and enters the first annular groove 621, so that the third sliding groove 64 is positioned, and the corresponding magnetic pole frame 5 is kept in a vertical state. At the same time, the first sliding sleeve 62 follows the second sliding sleeve 63 to move to the left, driving the second transmission rod 72 to overcome the second transmission spring 732 to move to the left, driving the corresponding first connecting rod 52 to swing to the left, driving the magnetic pole block 51 to rotate so that the permanent magnet 8 faces right, and stopping the electric push rod 9, and the present invention returns to a medium speed state;

[0040] When the present invention needs to switch from a medium speed to a maximum speed, the control electric push rod 9 continues to contract, thereby driving the first sliding sleeve 62 to continue to move to the left, thereby driving the second transmission rod 72 to overcome the second transmission spring 732 to move to the left, driving the first connecting rod 52 to swing to the left, and through the cooperation of the second connecting rod 53 and the vertical rod 511, driving the magnetic pole block 51 to rotate, when the second sliding sleeve 63 comes to the left end and touches the control tube 61 again, the magnetic pole frame 5 switches to a vertical state, stops the electric push rod 9, and the present invention returns to a high speed state.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stirring motor for food processing, comprising: A motor housing (1), a stator winding (2), an output shaft (3) and a rotor (4), wherein the motor housing (1) is provided with a housing cavity, a plurality of stator windings (2) are provided and are evenly distributed in the housing cavity along a circumferential direction, the output shaft (3) is rotatably arranged in the motor housing (1), the rotor (4) is rotatably arranged in the housing cavity, and the rotor (4) and the output shaft (3) are fixedly connected; characterized in that it also includes: a magnetic pole frame (5), a control mechanism (6), a transmission mechanism (7), and a permanent magnet (8); A plurality of rotor slots (42) are evenly distributed on the rotor (4) in a circumferential direction, a plurality of rotor bosses (41) are evenly distributed on the rotor (4) in a circumferential direction, and the rotor slots (42) and the rotor bosses (41) are staggered; A magnetic pole frame (5) is provided in each rotor slot (42), two magnetic pole frames (5) form a group, the two magnetic pole frames (5) in each group are symmetrically arranged relative to the output shaft (3), and the magnetic pole frames (5) can be switched between a flipped state and a vertical state; A plurality of permanent magnets (8) are provided, and the plurality of permanent magnets (8) are respectively fixedly arranged on the rotor boss (41) and the magnetic pole frame (5); when the magnetic pole frame (5) is in a vertical state, the permanent magnets (8) on the magnetic pole frame (5) face the radial direction of the output shaft (3), and the magnetic field generated by the permanent magnets (8) and the magnetic field generated by the stator winding (2) interact with each other; when the magnetic pole frame (5) is in a flipped state, the permanent magnets (8) on the magnetic pole frame (5) face the axial direction of the output shaft (3), and the magnetic field generated by the permanent magnets (8) and the magnetic field generated by the stator winding (2) do not interact with each other; The transmission mechanism (7) is slidably arranged on the rotor (41) to drive each group of the magnetic pole frames (5) to switch working states; The control mechanism (6) is fixedly arranged on the left side of the motor housing (1), and the control mechanism (6) cooperates with the transmission mechanism (7) to control each group of magnetic pole frames (5) to switch working states in sequence.

2. A stirring motor for food processing according to claim 1, characterized in that: The magnetic pole frame (5) comprises: a magnetic pole block (51), a first connecting rod (52) and a second connecting rod (53); A vertical rod (511) is provided below the magnetic pole block (51), and the permanent magnet (8) is fixedly arranged on the magnetic pole block (51); One end of the first connecting rod (52) is hinged in the rotor slot (42), and the other end is hinged on a side of the vertical rod (511) close to the magnetic pole block (51), and a first connecting rod slot (521) is provided on the first connecting rod (52) along the axial direction; One end of the second connecting rod (53) is hinged in the rotor slot (42), and the other end is hinged on a side of the vertical rod (511) away from the magnetic pole block (51).

3. A stirring motor for food processing according to claim 2, characterized in that: The transmission mechanism (7) comprises: a first transmission assembly and a second transmission assembly; The first transmission components are provided in a plurality of sets, with two sets forming a group, and each set of the first transmission components corresponds to a group of magnetic pole frames (5); the second transmission components are provided in a plurality of sets, with two sets forming a group, and each set of the second transmission components corresponds to a group of magnetic pole frames (5); The first transmission assembly comprises a first transmission rod (71) and a first transmission spring (731); the first transmission rod (71) is slidably arranged in the rotor (4); a first transmission pin (711) is radially arranged at one end of the first transmission rod (71), and a first pulling pin (712) is radially arranged at the other end; the first transmission pin (711) is slidably arranged in the first connecting rod groove (521); the first transmission spring (731) is arranged in the rotor (4) and is used to drive the first transmission rod (71) to move rightward; The second transmission assembly comprises a second transmission rod (72) and a second transmission spring (732); the second transmission rod (72) is slidably arranged in the rotor (4); a second transmission pin (721) is radially arranged at one end of the second transmission rod (72); a second pull pin (722) is radially arranged at the other end; the second transmission pin (712) is slidably arranged in the first connecting rod groove (521); the second transmission spring (732) is arranged in the rotor (4) to drive the second transmission rod (72) to move rightward.

4. A stirring motor for food processing according to claim 3, characterized in that: The control mechanism (6) comprises: a control cylinder (61), a first sliding sleeve (62), a second sliding sleeve (63), a third sliding sleeve (64), a first sliding pin (651) and a second sliding pin (652); The control cylinder (61) is fixedly arranged on the left side of the motor housing (1), and the control cylinder (61) is provided with a cylinder annular groove (611) along the inner circumferential surface; The first sliding sleeve (62) is slidably disposed in the control cylinder (61); a first pulling groove (622) is provided on the right side of the first sliding sleeve (62) along the outer circumferential surface; the second pulling pin (722) is slidably disposed in the first pulling groove (622); and a first annular groove (621) is provided on the left side of the first sliding sleeve (62) along the outer circumferential surface; The second sliding sleeve (63) is sleeved on the first sliding sleeve (62); a first sliding sleeve hole is radially provided on the left side of the second sliding sleeve (63); and a second annular groove (631) is provided on the right side of the second sliding sleeve (63) along the outer circumferential surface; The third sliding sleeve (64) is sleeved on the second sliding sleeve (63); a third annular groove (641) is provided on the left side of the third sliding sleeve (63) along the inner circumferential surface; a second pulling groove (642) is provided on the right side of the third sliding sleeve (63) along the inner circumferential surface; the first pulling pin (712) is slidably arranged in the second pulling groove (642); and a second sliding sleeve hole is radially provided between the third annular groove (641) and the second pulling groove (642); The first sliding pin (651) is slidably disposed in the second sliding sleeve hole, and the first sliding pin (651) can switch between the barrel annular groove (611) and the second annular groove (631); The second sliding pin (652) is slidably disposed in the first sliding sleeve hole, and the second sliding pin (652) can switch between the third annular groove (641) and the first annular groove (621).

5. A stirring motor for food processing according to claim 4, characterized in that: It also comprises an electric push rod (9); the electric push rod (9) is fixedly arranged on the control cylinder (61), and the telescopic end of the electric push rod (9) is fixedly connected to the second sliding sleeve (63).

6. A stirring motor for food processing according to claim 1, characterized in that: The number of the stator windings (2) is greater than the number of the permanent magnets (8).

7. A stirring motor for food processing according to claim 4, characterized in that: When the first sliding pin (651) is placed in the cylinder annular groove (611), the second sliding pin (652) is placed in the first annular groove (621), the second sliding sleeve (63) and the first sliding sleeve (62) are fixedly connected, and the third sliding sleeve (64) and the control cylinder (61) are fixedly connected.

8. A stirring motor for food processing according to claim 4, characterized in that: When the first sliding pin (651) is placed in the second annular groove (631), the second sliding pin (652) is placed in the third annular groove (641), the second sliding sleeve (63) and the third sliding sleeve (64) are fixedly connected, and the first sliding sleeve (62) is positioned under the action of the second transmission assembly.

Images