Control method of intelligent chopper and intelligent chopper

Abstract

The invention relates to a control method of an intelligent chopping machine and the intelligent chopping machine, the intelligent chopping machine comprises a motor and a chopping mechanism, the motor is connected with the chopping mechanism, and the control method of the intelligent chopping machine comprises the following steps: an operator sets a chopping mode; the chopping mode corresponds to the type and the final chopping form of the food materials; a motor is started, and the start-stop rule of the motor is determined according to the chopping mode; detecting the size of the working current of the motor; and the working time of the motor is determined according to the magnitude of the working current and the chopping mode. According to the food material type set by an operator and the expected final chopping form of the food materials, the food material chopping method and the food material chopping device have the advantages that food materials can be chopped; when the food materials in the chopper tend to be stable, the motor brakes, the food materials in the chopper are disordered, the situation that the food materials cannot be repeatedly chopped by the chopping mechanism after being stacked is avoided, and the chopping effect is improved. According to the intelligent chopping machine, the duration time of chopping work is adjusted by detecting the magnitude of the current of the motor and the types of food materials.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a control method of an intelligent shredder and an intelligent shredder. Background Art

[0002] Household choppers can quickly process various ingredients, such as chopping, juicing, grinding, etc., thereby greatly improving cooking efficiency.

[0003] Although existing household shredders are provided with multiple gears for operators to choose from in order to cope with different usage scenarios, the difference between the various gears of the shredder is only the difference in the constant rotation speed of the knife assembly in the shredder. In actual use of the shredder, the types and quantities of ingredients will change. If only the constant rotation speed of the knife assembly is adjusted, the adjustment range is too small and it is not able to cope with ingredients that have changed in type and quantity. At the same time, the knife assembly rotates at a fixed speed for a long time, and the constant speed makes the operation of the knife assembly stable, and the ingredients in the shredder tend to be stable and easy to accumulate. Therefore, the existing shredders have great functional limitations, and the food processing effect is limited, which in turn affects the user experience.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a control method of an intelligent shredder and an intelligent shredder, so as to enhance the ability of the shredder to adapt to different usage scenarios.

[0006] The technical solution of the present invention is as follows:

[0007] A control method for an intelligent shredder, the intelligent shredder comprising a motor and a shredding mechanism, the motor being connected to the shredding mechanism, the control method for the intelligent shredder comprising the following steps:

[0008] The operator sets the chopping mode; the chopping mode corresponds to the type of food and the final chopping form;

[0009] Starting the motor, and determining the start and stop rules of the motor according to the shredding mode;

[0010] Detecting the magnitude of the working current of the motor;

[0011] The working time of the motor is determined according to the magnitude of the working current and the chopping mode.

[0012] A further technical solution is that the motor is driven by a single chip microcomputer; the single chip microcomputer receives an electrical signal corresponding to the shredding mode.

[0013] A further technical solution is that before the operator sets the shredding mode, the single chip microcomputer is first powered on, and the ports and AD are initialized.

[0014] A further technical solution is that the output port of the single chip microcomputer is connected to a transistor, and the conduction and cutoff of the transistor drive a thyristor; the thyristor is connected to the motor.

[0015] A further technical solution is that the voltage detection port of the single chip microcomputer is connected to the circuit connected to the motor; the specific steps of detecting the magnitude of the working current of the motor include:

[0016] Obtaining a reading of the voltage detection port;

[0017] The magnitude of the current flowing through the motor is calculated using the known resistance data and the read voltage data.

[0018] A further technical solution is that before the working time of the motor ends, the method further comprises the following steps:

[0019] Repeatedly detecting the magnitude of the working current of the motor;

[0020] Compare the magnitudes of the previous working current and the subsequent working current;

[0021] If the previous working current is greater than the subsequent working current, it is determined that the intelligent shredder is working normally;

[0022] If the previous working current is less than or equal to the subsequent working current, it is determined that the intelligent shredder is operating abnormally.

[0023] A further technical solution is to detect the magnitude of the working current of the motor, which specifically includes the steps of:

[0024] measuring the magnitude of the current flowing through the motor in different time periods;

[0025] An average value of the current flowing through the motor is calculated, and the average value is taken as the working current of the motor.

[0026] A further technical solution is to determine the start and stop rules of the motor according to the shredding mode, which specifically includes the steps of:

[0027] Determine the type of the food; for different types of food, the same final chopped form corresponds to different start and stop rules of the motor;

[0028] The start and stop rules of the motor are determined according to the final chopped form of the food.

[0029] An intelligent shredder, comprising a motor, a shredding mechanism and a control mechanism;

[0030] The motor is connected to the shredding mechanism;

[0031] The control mechanism is connected to the motor and is used to implement the control method of the intelligent shredder according to any one of claims 1 to 8.

[0032] Its further technical solution is that it also includes a planetary transmission mechanism and a gear transmission mechanism;

[0033] The planetary transmission mechanism comprises a central wheel connected to the motor, a planetary wheel meshing with the central wheel, and a planetary carrier connected to the planetary wheel; the planetary carrier is provided with driving teeth, and a reverse connection hole is provided on the planetary carrier;

[0034] The gear transmission mechanism comprises a first transmission gear meshing with the planet carrier, a second transmission gear meshing with the first transmission gear, and a driven connecting sleeve meshing with the second transmission gear, wherein a driven connecting hole is provided on the driven connecting sleeve;

[0035] The shredding mechanism comprises a rotating shaft and a shaft sleeve; the rotating shaft is connected to the reversing connecting hole; and the shaft sleeve is connected to the driven connecting hole.

[0036] The beneficial technical effects of the present invention are as follows

[0037] (1) The control method of the intelligent shredder in the present invention sets the start and stop time of the motor according to the type of food set by the operator and the expected final shredding shape of the food. The motor drives the shredder mechanism to select and shred the food. When the food inside the shredder tends to be stable, the motor brakes to disrupt the food inside the shredder to prevent the food from piling up and not being able to be repeatedly shredded by the shredder mechanism, thereby improving the shredding effect of the intelligent shredder. In addition, the more food there is in the shredder, the greater the resistance the shredder mechanism encounters. The intelligent shredder in the present invention adjusts the duration of the shredding operation by detecting the size of the motor current and the type of food.

[0038] In summary, the intelligent chopper in the present invention can start and stop intelligently during the chopping process, and flexibly adjust the chopping time and start and stop time according to the type and quantity of food to adapt to different usage scenarios and optimize the food processing effect.

[0039] (2) Furthermore, the motor is driven by the single-chip microcomputer, and the voltage detection port of the single-chip microcomputer is used to measure the current flowing through the motor, thereby avoiding the need to set up additional current detection equipment, making the structure of the food processor more streamlined and compact. The streamlined and compact structure makes the chopper smaller in size and footprint, and lighter in weight. When kitchen space is limited, the chopper can save valuable space and make the kitchen more tidy and orderly. It is also easy to carry for outdoor activities. In addition, the streamlined and compact structure of the chopper reduces unnecessary components and simplifies the structure, which can reduce the possibility of failure and improve the stability and durability of the food processor. It is also convenient for later maintenance.

[0040] (3) Furthermore, the current of the motor is obtained by averaging the current detected in different time periods. Detecting the current in multiple time periods increases the diversity of data samples and avoids the fluctuation of instantaneous current affecting the accuracy of motor current detection, thereby more accurately reflecting the actual current and determining the duration of the shredding work. Avoiding the shredding work time being affected by detection errors, thereby reducing the working efficiency or shredding quality of the intelligent shredder. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A flow chart of a control method of an intelligent shredder according to the present invention is shown.

[0042] Figure 2 The present invention shows a schematic diagram of the current detection principle of the motor in the control method of the intelligent shredder.

[0043] Figure 3 A three-dimensional structural schematic diagram of the intelligent shredder of the present invention is shown.

[0044] Figure 4 An exploded perspective view of the intelligent shredder of the present invention is shown.

[0045] Figure 5 A partial enlarged view of the intelligent shredder of the present invention at position A is shown.

[0046] Figure 6 A vertical cross-sectional structural schematic diagram of the intelligent shredder of the present invention is shown.

[0047] Markings in the accompanying drawings:

[0048] 1. Motor; 21. First resistor; 22. Third resistor; 23. Fifth resistor; 24. Seventh resistor; 25. Diode; 26. Voltage detection port; 27. Output port; 28. SCR; 29. ​​Transistor; 3. Planetary transmission mechanism; 31. Center wheel; 32. Planetary gear; 33. Planet carrier; 331. Reverse connection hole; 332. Driving tooth; 4. Gear transmission mechanism; 41. First transmission gear; 42. Second transmission gear; 5. Driven connection sleeve; 51. Driven connection hole; 6. Chopping mechanism; 61. Rotating shaft; 62. Bushing; 63. Knife assembly. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0050] In the description of the present invention, the orientations or positional relationships indicated by terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, and “circumferential” are defined as orientations or positional relationships based on those shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] Embodiment 1

[0052] Figure 1 The flowchart of the control method of the intelligent shredder of the present invention is shown. Figure 1 , a control method of an intelligent shredder, the intelligent shredder comprises a motor 1 and a shredding mechanism 6, the motor 1 is connected to the shredding mechanism 6, and the control method of the intelligent shredder comprises the following steps:

[0053] S1. The microcontroller first performs power-on, port initialization and AD initialization.

[0054] Figure 2 The current detection principle diagram of the motor in the control method of the intelligent shredder of the present invention is shown. Figure 2 In this embodiment, the motor 1 is driven by a single chip microcomputer. The single chip microcomputer driving the motor 1 can achieve precise motion control. And the control of the motor 1 by the single chip microcomputer can be adjusted according to different needs to adapt to different working environments and working requirements. The control strategy of the single chip microcomputer is also very easy to adjust. By modifying the program, the control strategy of the motor 1 can be easily changed, avoiding the situation where the traditional mechanical transmission method requires frequent replacement of parts. It reduces maintenance costs and facilitates the debugging and upgrading of equipment.

[0055] Preferably, the operator sets the shredding mode before. The single-chip microcomputer is first powered on, port initialized and AD initialized. Through the power-on step, the single-chip microcomputer will undergo a series of internal initialization processes, including reset, clock initialization, memory initialization, etc., to ensure that it can start running from a known state. The port initialization of the single-chip microcomputer is to configure the ports of the single-chip microcomputer to determine the functions of each port so that the single-chip microcomputer can read the signal and control the motor 1. Among them, AD initialization sets the key parameters of the ADC module, such as the working mode, channel selection, sampling time, etc. Ensure that the ADC module can accurately collect and convert analog signals according to predetermined parameters and modes, provide a reliable data basis for subsequent digital signal processing, and improve the stability and reliability of the entire single-chip microcomputer system.

[0056] S2. The operator sets the chopping mode, which corresponds to the type of food and the final chopped shape. Different types of food have different hardness and different difficulty in chopping. Therefore, different types of food, even if the weight and expected final chopped shape are the same, require different chopping times. Similarly, even if the type of food is the same, the operator expects different chopped shapes, and the time required for the food processor to work is also different. Knowing the type of food and the final chopped shape in advance makes it easier for the chopper to make adaptive adjustments, thereby improving the chopper's work efficiency and quality.

[0057] S3. Drive the motor 1 and determine the start and stop rules of the motor 1 according to the shredding mode. Specifically, the steps include:

[0058] Determine the type of food. The chopping mode set by the operator is converted into a digital signal through a button, and the single-chip microcomputer receives the digital signal through a cable. Different types of food have different start-stop rules for the same final chopping form. That is, for different types of food, even if the same chopping effect is expected, different start-stop rules should be set for motor 1 to adapt to the characteristics of different food.

[0059] Then, according to the final chopped shape of the food, determine the start and stop rules of motor 1. For example, compare chopping a single food into large pieces and chopping it more finely. When the food is chopped into large pieces, motor 1 needs to be started and stopped more frequently so that the food is fully stirred in the chopper due to the influence of inertia and gravity. Avoid the chopping mechanism 6 rotating at a fixed speed for a long time, the food in the chopper tends to be stable, and some food is chopped too finely. When the food is chopped more finely, the start and stop interval of motor 1 needs to be extended, and then some food is stirred after it is chopped finely enough. Avoid frequent starting and stopping of motor 1 affecting the chopping efficiency of food.

[0060] Preferably, the output port 27 of the single-chip microcomputer is connected to the transistor 29, and the single-chip microcomputer controls the conduction and cutoff of the transistor 29 to drive the thyristor 28. The thyristor 28 is connected to the motor 1. Among them, a seventh resistor 24 is set between the single-chip microcomputer and the transistor 29 to limit the current of the single-chip microcomputer. Through the amplification effect of the transistor 29, the single-chip microcomputer can have a smaller current to control a larger current, thereby realizing effective control of the thyristor 28. At the same time, as an intermediate link, the transistor 29 can also play a role in isolating and protecting the single-chip microcomputer, thereby enhancing the reliability of the system.

[0061] S4. Detect the magnitude of the working current of the motor 1. Among them, the voltage detection port 26 of the single-chip microcomputer is connected to the circuit connected to the motor 1. While the motor 1 is driven by the single-chip microcomputer, the voltage detection port 26 of the single-chip microcomputer is used to measure the current flowing through the motor 1, avoiding the need to set up additional current detection equipment, making the structure of the food processor more streamlined and compact. The streamlined and compact structure makes the chopper have a smaller size and footprint, and is also lighter in weight. When the kitchen space is limited, the chopper can save valuable space and make the kitchen more tidy and orderly. At the same time, it is easy to carry for outdoor activities. In addition, the streamlined and compact structure of the chopper reduces unnecessary components and simplifies the structure, which can reduce the possibility of failure and improve the stability and durability of the food processor. It is also convenient for later maintenance. The current detection specifically includes the following steps:

[0062] Get the reading of the voltage detection port 26;

[0063] The magnitude of the current flowing through the motor 1 is calculated using the known resistance data and the read voltage data.

[0064] In the embodiment itself, the motor 1 is connected in series with the thyristor 28 and the fifth resistor 23, and the current on the fifth resistor 23 is the current of the motor 1. At the same time, the first resistor 21, the third resistor 22 and the diode 25 are connected in series, and the first resistor 21, the third resistor 22 and the diode 25 are connected in parallel with the fifth resistor 23. The voltage of the diode 25 is set at the factory, and the resistance values ​​of the first resistor 21 and the third resistor 22 are set to be consistent. At this time, the voltage drop of the first resistor 21 and the third resistor 22 is the same. The voltage detection port 26 is connected between the first resistor 21 and the third resistor 22. The current of the motor 1 meets the following conditions:

[0065] Vz=Vx-(Vcc-Vx)=2Vx-Vcc

[0066] Vy=Vz-Vd

[0067] Im=Ir5=(Vcc-Vy) / R5

[0068] Wherein, Vz is the voltage between the diode 25 and the third resistor 22; Vx is the reading of the voltage detection terminal; Vcc is the circuit power supply voltage; Vy is the voltage of the parallel circuit; Vd is the voltage of the diode 25;

[0069] Measuring the magnitude of the current flowing through the motor 1 in different time periods multiple times;

[0070] Calculate the average value of the current flowing through the motor 1, and take the average value as the working current of the motor 1. Detect the current in multiple time periods to increase the diversity of data samples, avoid the fluctuation of instantaneous current affecting the accuracy of the current detection of the motor 1, so as to more accurately reflect the actual size of the current and determine the duration of the shredding work. Avoid the shredding time being affected by the detection error, which reduces the working efficiency or shredding quality of the intelligent shredder.

[0071] S5. According to the magnitude of the working current and the chopping mode, the working time of the motor 1 is determined. After receiving the chopping mode electrical signal and the current magnitude electrical signal, the single chip microcomputer executes the budgeted program instruction to determine the working time of the motor 1.

[0072] S6. Before the working time of the motor 1 ends, the step of:

[0073] Repeat the detection of the magnitude of the working current of the motor 1. Calculate the working current through the reading of the voltage detection section and the known resistance data;

[0074] Compare the magnitudes of the previous working current and the subsequent working current;

[0075] If the first working current is greater than the second working current, it is determined that the intelligent shredder is working normally;

[0076] If the previous working current is ≤ the subsequent working current, it is determined that the intelligent shredder is working abnormally.

[0077] When the ingredients start to be chopped, the volume of the ingredients is relatively large, usually in the form of blocks or larger particles. When the chopping mechanism 6 contacts and chops part of the ingredients, the contact restriction between the ingredients generates a large friction force, and the resistance to the chopping mechanism 6 is relatively large. At this time, the whole piece of food is also harder, and the high hardness requires a greater force to break, so the resistance to chopping is relatively large, and the prior working current is also relatively large. As the ingredients are chopped into smaller particles, these smaller particles are easier to chop and move, so the resistance encountered by the food processor during the chopping process will gradually decrease. At the same time, some ingredients with a higher water content are also prone to form a fluid state when chopped, thereby reducing the chopping resistance and reducing the current of the motor 1. Therefore, when the intelligent chopper is working normally, the prior working current will be smaller than the subsequent working current. The intelligent chopper can give an opinion on whether the chopping work is proceeding normally based on the current size, and assist the operator in making a judgment.

[0078] Embodiment 2

[0079] Figure 3 A three-dimensional structural schematic diagram of the intelligent shredder of the present invention is shown. Figure 4 The exploded perspective view of the intelligent shredder of the present invention is shown. Figure 3 and Figure 4 Based on the first embodiment, the second embodiment discloses an intelligent shredder, which includes a motor 1, a shredding mechanism 6 and a control mechanism. The control mechanism can be a single chip microcomputer. The motor 1 is connected to the shredding mechanism 6. The control mechanism is connected to the motor 1, and is used to implement a control method of the intelligent shredder.

[0080] Figure 5 A partial enlarged view of the intelligent shredder of the present invention at position A is shown. Figure 6 The vertical cross-sectional view of the intelligent shredder of the present invention is shown. Figure 5 and Figure 6In this embodiment, the intelligent shredder further includes a planetary transmission mechanism 3 and a gear transmission mechanism 4. The planetary transmission mechanism 3 includes a central wheel 31 connected to the motor 1, a planetary wheel 32 meshing with the central wheel 31, and a planetary carrier 33 connected to the planetary wheel 32. A driving tooth 332 is provided on the planetary carrier 33, and a reversing connection hole 331 is provided on the planetary carrier 33. The planetary carrier 33 outputs a torque in the opposite direction to the torque of the motor 1 through the reversing connection hole 331. The gear transmission mechanism 4 includes a first transmission gear 41 meshing with the planetary carrier 33, a second transmission gear 42 meshing with the first transmission gear 41, and a driven connection sleeve 5 meshing with the second transmission gear 42, and a driven connection hole 51 is provided on the driven connection sleeve 5. The driven connection sleeve 5 outputs a torque in the same direction as the torque of the motor 1 through the driven connection hole 51. The shredding mechanism 6 includes a rotating shaft 61 and a shaft sleeve 62. The rotating shaft 61 is connected to the reversing connection hole 331. The shaft sleeve 62 is connected to the driven connection hole 51. The double-layer bidirectional rotation of the rotating shaft 61 and the shaft sleeve 62 is realized. When the knife assembly 63 is arranged on both the rotating shaft 61 and the shaft sleeve 62, the food can be chopped more quickly in a larger range.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A control method for an intelligent shredder, characterized in that: The intelligent shredder comprises a motor and a shredding mechanism, wherein the motor is connected to the shredding mechanism, and the control method of the intelligent shredder comprises the following steps: The operator sets the chopping mode; the chopping mode corresponds to the type of food and the final chopping form; Starting the motor, and determining the start and stop rules of the motor according to the shredding mode; Detecting the magnitude of the working current of the motor; The working time of the motor is determined according to the magnitude of the working current and the chopping mode.

2. The control method of the intelligent shredder according to claim 1, characterized in that: The motor is driven by a single chip microcomputer; the single chip microcomputer receives an electrical signal corresponding to the shredding mode.

3. The control method of the intelligent shredder according to claim 2, characterized in that: Before the operator sets the shredding mode, the single chip microcomputer is first powered on, and the ports and AD are initialized.

4. The control method of the intelligent shredder according to claim 2, characterized in that: The output port of the single chip microcomputer is connected to a transistor, and the conducting and cutting-off of the transistor drives a thyristor; the thyristor is connected to the motor.

5. The control method of the intelligent shredder according to claim 2, characterized in that: The voltage detection port of the single chip microcomputer is connected to the circuit connected to the motor; The specific steps of detecting the magnitude of the working current of the motor include: Obtaining a reading of the voltage detection port; The magnitude of the current flowing through the motor is calculated using the known resistance data and the read voltage data.

6. The control method of the intelligent shredder according to claim 1, characterized in that: Before the working time of the motor ends, the method further comprises the following steps: Repeatedly detecting the magnitude of the working current of the motor; Compare the magnitudes of the previous working current and the subsequent working current; If the previous working current is greater than the subsequent working current, it is determined that the intelligent shredder is working normally; If the previous working current is less than or equal to the subsequent working current, it is determined that the intelligent shredder is operating abnormally.

7. The control method of the intelligent shredder according to claim 1, characterized in that: Detecting the magnitude of the working current of the motor specifically comprises the steps of: measuring the magnitude of the current flowing through the motor in different time periods; An average value of the current flowing through the motor is calculated, and the average value is taken as the working current of the motor.

8. The control method of the intelligent shredder according to claim 1, characterized in that: Determining the start and stop rules of the motor according to the shredding mode specifically includes the following steps: Determine the type of the food; for different types of food, the same final chopped form corresponds to different start and stop rules of the motor; The start and stop rules of the motor are determined according to the final chopped form of the food.

9. Intelligent shredder, characterized in that: The intelligent shredder comprises a motor, a shredding mechanism and a control mechanism; the motor is connected to the shredding mechanism; The control mechanism is connected to the motor and is used to implement the control method of the intelligent shredder according to any one of claims 1 to 8.

10. The control method of the intelligent shredder according to claim 9, characterized in that: It also includes a planetary transmission mechanism and a gear transmission mechanism; The planetary transmission mechanism comprises a central wheel connected to the motor, a planetary wheel meshing with the central wheel, and a planetary carrier connected to the planetary wheel; the planetary carrier is provided with driving teeth, and a reverse connection hole is provided on the planetary carrier; The gear transmission mechanism comprises a first transmission gear meshing with the planet carrier, a second transmission gear meshing with the first transmission gear, and a driven connecting sleeve meshing with the second transmission gear, wherein a driven connecting hole is provided on the driven connecting sleeve; The shredding mechanism comprises a rotating shaft and a shaft sleeve; the rotating shaft is connected to the reversing connecting hole; and the shaft sleeve is connected to the driven connecting hole.

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