Milk shaking device

Abstract

The utility model relates to the technical field of milk mixing devices, in particular to a milk shaking device which comprises a milk bottle placing groove and a rotating groove, and the milk bottle placing groove is placed in the rotating groove and is rotatably connected with a motor rotating shaft of the rotating groove. The temperature control device further comprises a positive and negative rotation control circuit, a plurality of NTC temperature sensors and a plurality of miniature PTC heaters. The forward and reverse rotation of the forward and reverse rotation control circuit is controlled by a switching tube, and the output end of the forward and reverse rotation control circuit is electrically connected with a motor of the rotating groove; the NTC temperature sensor and the miniature PTC heater are arranged in the groove wall of the feeding bottle placing groove at intervals along the inner groove outline of the cross section of the feeding bottle placing groove; the problems of abnormal sound, short service life and poor constant-temperature milk mixing effect of the milk shaking device are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of milk mixers, in particular to a milk shaker. Background Art

[0002] The main functions of a breast milk shaker include warming milk, shaking milk, and thawing breast milk. The warming function heats the water in the inner tank, which then heats the milk in the bottle through heat conduction, reaching the perfect temperature for the baby to drink. In addition, breast milk shakers often have an automatic keep-warm function to maintain the temperature of the milk after warming, ensuring that the baby can drink warm milk at any time. This design makes the breast milk shaker more comprehensive in terms of functions and suitable for families with different needs.

[0003] However, current breast pumps usually control the forward and reverse rotation of the motor by closing a relay, which results in high losses. The relay action is usually accompanied by contact closure, which can cause the breast pump to make unusual noises and a poor user experience. More importantly, the high frequency of forward and reverse rotation can easily damage the relay, reducing the service life of the breast pump.

[0004] On the other hand, the current milk shaker heater and temperature sensor are both arranged at the bottom of the bottle placement slot. During the forward and reverse rotation of the motor, the water moves toward the slot wall of the bottle placement slot due to the centripetal force, leaving only part of the water at the bottom of the slot. Moreover, due to the rotating flow of the water, there is less upward and downward flow. The milk shaker usually only heats the water at the bottom of the slot to the preset temperature and then stops working, resulting in poor constant temperature milk adjustment effect. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a milk shaker that solves the problems of abnormal noise and service life of the milk shaker and the problem of poor constant temperature milk conditioning effect.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A milk shaker comprises a bottle placement trough and a rotating trough, wherein the bottle placement trough is placed in the rotating trough and is rotationally connected to the rotating shaft of the rotating trough's motor; the milk shaker further comprises a forward and reverse rotation control circuit, a plurality of NTC temperature sensors, and a plurality of micro PTC heaters; the forward and reverse rotation of the forward and reverse rotation control circuit is controlled by a switching tube, and the output end of the forward and reverse rotation control circuit is electrically connected to the rotating trough's motor;

[0008] The NTC temperature sensor and the micro PTC heater are installed at intervals in the groove wall of the feeding bottle placement groove along the inner groove contour of the cross section of the feeding bottle placement groove.

[0009] Furthermore, it also includes an NTC temperature detection circuit, a PTC control circuit and a microcontroller; the first control terminal of the microcontroller is electrically connected to the input terminal of the forward and reverse control circuit, the first input terminal of the microcontroller is electrically connected to the output terminal of the NTC temperature detection circuit, and the second control terminal of the microcontroller is electrically connected to the input terminal of the PTC control circuit;

[0010] The NTC temperature sensors are electrically connected to the corresponding NTC temperature detection circuits, and the input ends of the NTC temperature detection circuits are electrically connected to the NTC temperature sensors;

[0011] The micro PTC heaters are electrically connected to the corresponding PTC control circuits, and the output end of the PTC control circuit is electrically connected to the micro PTC heaters.

[0012] Furthermore, the forward and reverse control circuit includes a resistor R36, a resistor R34, a resistor JR10, a resistor R35, a resistor R39, a diode D6, a diode D7, a diode D8, a diode D9, a MOS transistor Q6, a MOS transistor Q7, a MOS transistor Q8, a MOS transistor Q9, a transistor Q10, and a transistor Q11; one end of the resistor R36 and one end of the resistor R39 are both used as input ends of the forward and reverse control circuit, and the anode of the diode D6 and the anode of the diode D7 are both used as output ends of the forward and reverse control circuit;

[0013] One end of the resistor R34, the source of the MOS transistor Q6, the cathode of the diode D6, one end of the resistor R35, the source of the MOS transistor Q7 and the cathode of the diode D7 are all connected to a 12V power supply;

[0014] The other end of the resistor R34 and the gate of the MOS transistor Q6 are electrically connected to one end of the resistor JR10. The other end of the resistor JR10 and the gate of the MOS transistor Q8 are electrically connected to the collector of the transistor Q10. The base of the transistor Q10 is electrically connected to the other end of the resistor R36. The emitter of the transistor Q10 is grounded. The drain of the MOS transistor Q6, the drain of the MOS transistor Q8, and the cathode of the diode D8 are electrically connected to the anode of the diode D6.

[0015] The other end of the resistor R35, the gate of the MOS transistor Q7, and the gate of the MOS transistor Q9 are all electrically connected to the collector of the transistor Q11, the base of the transistor Q11 is electrically connected to the other end of the resistor R39, the emitter of the transistor Q11 is grounded, and the drain of the MOS transistor Q7, the drain of the MOS transistor Q9, and the cathode of the diode D9 are all electrically connected to the anode of the diode D7;

[0016] The source of the MOS transistor Q8 , the source of the MOS transistor Q9 , the anode of the diode D8 , and the anode of the diode D9 are all grounded.

[0017] Furthermore, the forward and reverse control circuit also includes a jam detection module; the source of the MOS tube Q8, the source of the MOS tube Q9, the anode of the diode D8, and the anode of the diode D9 are all grounded after passing through the jam detection module, and the output end of the jam detection module is electrically connected to the second input end of the microcontroller.

[0018] Furthermore, the jam detection module includes a resistor R43, a resistor R44, and a resistor R45; the source of the MOS transistor Q8, the source of the MOS transistor Q9, the anode of the diode D8, the anode of the diode D9, one end of the resistor R43, one end of the resistor R44, and one end of the resistor R45 are electrically connected, the other end of the resistor R43 and the other end of the resistor R44 are grounded, and the other end of the resistor R45 serves as the output end of the jam detection module.

[0019] Furthermore, the NTC temperature detection circuit includes a resistor R1, a resistor R2 and a capacitor C1; one end of the resistor R2 is used as an input end of the NTC temperature detection circuit, and the other end of the resistor R2 is used as an output end of the NTC temperature detection circuit;

[0020] One end of the resistor R1 is connected to a 5V power supply, the other end of the resistor R1 is electrically connected to the other end of the resistor R2, one end of the resistor R2 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded.

[0021] Furthermore, the PTC control circuit includes a MOS transistor Q1, a resistor R3, and a resistor R4; the drain of the MOS transistor Q1 serves as the output end of the PTC control circuit, and one end of the resistor R3 serves as the input end of the PTC control circuit;

[0022] The other end of the resistor R3 and one end of the resistor R4 are both electrically connected to the gate of the MOS transistor Q1 , and the other end of the resistor R4 and the source of the MOS transistor Q1 are both grounded.

[0023] The technical solution provided by the present invention can achieve the following beneficial effects: a feeding bottle placement trough is placed within the rotating trough and is rotationally connected to the rotating trough's motor shaft, allowing the feeding bottle placement trough to rotate within the rotating trough under the motor's drive, thereby performing a rotary milk-shaking operation. Furthermore, the forward and reverse rotation of the forward and reverse control circuit is controlled by a switching tube. The output end of the forward and reverse control circuit is electrically connected to the rotating trough's motor to drive the motor to rotate. The switching tube, a semiconductor device, replaces the relay, which is an electromagnetic switch. The principle of carrier diffusion modulation current is utilized to control the on-off of the circuit. This ensures that the forward and reverse control circuit does not make abnormal noises during high-frequency switching, has a longer service life, and is less likely to fail.

[0024] According to the flow characteristics of water during the forward and reverse shaking of the milk shaker, multiple NTC temperature sensors and multiple micro PTC heaters are provided. The two are installed at intervals in the groove wall of the bottle placement groove along the inner groove contour of the cross-section of the bottle placement groove, forming U-shaped detection and U-shaped heating along the groove body of the bottle placement groove. When the water fits into the inner groove due to centripetal force, it can be heated at multiple points by the micro PTC heater, ensuring that the water is heated evenly and fully, and the temperature can be detected at multiple points by the NTC temperature sensor, ensuring that the water as a whole is heated to the preset temperature before stopping heating, thereby achieving a better constant temperature milk adjustment effect.

[0025] It should be noted that, based on the need for multi-point detection and to reduce installation difficulty and cost, it is preferred to use NTC temperature sensors (compared to infrared temperature sensors, IC temperature sensors, etc.); based on the need for multi-point heating, it is preferred to use micro PTC heaters, which have the characteristics of miniaturization and are convenient for multi-point installation. They also have self-control characteristics. When the temperature rises to a certain level, their resistance value will increase rapidly, thereby limiting the flow of current, avoiding the risk of overheating and fire, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a milk shaker in one embodiment of the present utility model.

[0027] Figure 2 Yes Figure 1 The circuit diagram of a milk shaker is shown.

[0028] Figure 3 Yes Figure 2 The circuit diagram of the forward and reverse control circuit is shown.

[0029] Figure 4 Yes Figure 2 The circuit diagram of the NTC temperature detection circuit is shown.

[0030] Figure 5 Yes Figure 2 The circuit diagram of the PTC control circuit is shown.

[0031] Wherein: feeding bottle placement slot 1, rotating slot 2, NTC temperature sensor 3, micro PTC heater 4, forward and reverse control circuit 5, inner slot profile 11, NTC temperature detection circuit 31, PTC control circuit 41, microcontroller 6, resistor R36, resistor R34, resistor JR10, resistor R35, resistor R39, diode D6, diode D7, diode D8, diode D9, MOS transistor Q6, MOS transistor Q7, MOS transistor Q8, MOS transistor Q9, transistor Q10, transistor Q11, jam detection module 51, resistor R43, resistor R44, resistor R45, resistor R1, resistor R2, capacitor C1, MOS transistor Q1, resistor R3, resistor R4. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features, without distinction of order or importance.

[0034] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0036] The following combination Figures 1 to 5 , describing a milk shaker according to an embodiment of the present utility model.

[0037] A milk shaker includes a bottle placement slot 1 and a rotating slot 2. The bottle placement slot 1 is placed in the rotating slot 2 and is rotationally connected to the motor shaft of the rotating slot 2. The milk shaker also includes a forward and reverse rotation control circuit 5, multiple NTC temperature sensors 3, and multiple micro PTC heaters 4. The forward and reverse rotation of the forward and reverse rotation control circuit 5 is controlled by a switching tube, and the output end of the forward and reverse rotation control circuit 5 is electrically connected to the motor of the rotating slot 2.

[0038] The NTC temperature sensor 3 and the micro PTC heater 4 are installed in the groove wall of the feeding bottle placement groove 1 at intervals along the inner groove profile 11 of the cross section of the feeding bottle placement groove 1 .

[0039] The present invention proposes a preferred embodiment of a milk shaker, such as Figure 1 As shown, the bottle placement trough 1 is placed in the rotating trough 2 and is rotatably connected to the motor shaft of the rotating trough 2, so that the bottle placement trough 1 can rotate in the rotating trough 2 under the drive of the motor to perform rotary shaking of the milk. On this basis, the forward and reverse rotation of the forward and reverse control circuit 5 is controlled by a switching tube. The output end of the forward and reverse control circuit 5 is electrically connected to the motor of the rotating trough 2 to drive the motor to rotate. The switching tube, which is a semiconductor device, replaces the relay, which is an electromagnetic switch. The principle of carrier diffusion modulation current is used to control the on and off of the circuit. As a result, the forward and reverse control circuit 5 does not make abnormal sounds during the high-frequency forward and reverse switching process, and has a longer service life and is not easily damaged.

[0040] According to the flow characteristics of water during the forward and reverse shaking of the milk shaker, multiple NTC temperature sensors 3 and multiple micro PTC heaters 4 are provided. The two are installed at intervals in the groove wall of the bottle placement groove 1 along the inner groove contour 11 of the cross section of the bottle placement groove 1, forming a U-shaped detection and U-shaped heating along the groove body of the bottle placement groove 1, so that when the water fits into the inner groove due to centripetal force, it can be heated at multiple points by the micro PTC heater 4, ensuring that the water is heated evenly and fully, and the temperature can be detected at multiple points by the NTC temperature sensor 3, ensuring that the water as a whole is heated to the preset temperature before stopping heating, thereby achieving a better constant temperature milk adjustment effect.

[0041] It should be noted that, based on the need for multi-point detection, in order to reduce the difficulty and cost of installation, it is preferred to use an NTC temperature sensor 3 (compared to infrared temperature sensors, IC temperature sensors, etc.); based on the need for multi-point heating, it is preferred to use a miniature PTC heater 4, which has the characteristics of miniaturization and is convenient for multi-point installation. It also has self-control characteristics. When the temperature rises to a certain level, its resistance value will increase rapidly, thereby limiting the flow of current, avoiding the risk of overheating and fire, and improving safety.

[0042] Furthermore, it also includes an NTC temperature detection circuit 31, a PTC control circuit 41 and a microcontroller 6; a first control terminal of the microcontroller 6 is electrically connected to the input terminal of the forward and reverse control circuit 5, a first input terminal of the microcontroller 6 is electrically connected to the output terminal of the NTC temperature detection circuit 31, and a second control terminal of the microcontroller 6 is electrically connected to the input terminal of the PTC control circuit 41;

[0043] The NTC temperature sensors 3 are electrically connected to corresponding NTC temperature detection circuits 31, and the input end of the NTC temperature detection circuit 31 is electrically connected to the NTC temperature sensor 3;

[0044] The micro PTC heaters 4 are electrically connected to corresponding PTC control circuits 41 , and the output end of the PTC control circuit 41 is electrically connected to the micro PTC heaters 4 .

[0045] In this embodiment, Figure 2 As shown, in order to improve the stability of multi-point detection and multi-point heating, multiple NTC temperature sensors 3 are provided with NTC temperature detection circuits 31 one by one, and micro PTC heaters 4 are provided with PTC control circuits 41 one by one. Then, a microcontroller 6 (such as MCU) is electrically connected to the forward and reverse control circuit 5 and all NTC temperature detection circuits 31 and PTC control circuits 41 to achieve unified monitoring and realize multiple logic control modes.

[0046] Furthermore, the forward and reverse control circuit 5 includes a resistor R36, a resistor R34, a resistor JR10, a resistor R35, a resistor R39, a diode D6, a diode D7, a diode D8, a diode D9, a MOS transistor Q6, a MOS transistor Q7, a MOS transistor Q8, a MOS transistor Q9, a transistor Q10, and a transistor Q11; one end of the resistor R36 and one end of the resistor R39 are both used as input ends of the forward and reverse control circuit 5, and an anode of the diode D6 and an anode of the diode D7 are both used as output ends of the forward and reverse control circuit 5;

[0047] One end of the resistor R34, the source of the MOS transistor Q6, the cathode of the diode D6, one end of the resistor R35, the source of the MOS transistor Q7 and the cathode of the diode D7 are all connected to a 12V power supply;

[0048] The other end of resistor R34 and the gate of MOS transistor Q6 are electrically connected to one end of resistor JR10. The other end of resistor JR10 and the gate of MOS transistor Q8 are electrically connected to the collector of transistor Q10. The base of transistor Q10 is electrically connected to the other end of resistor R36. The emitter of transistor Q10 is grounded. The drain of MOS transistor Q6, the drain of MOS transistor Q8, and the cathode of diode D8 are electrically connected to the anode of diode D6.

[0049] The other end of the resistor R35, the gate of the MOS transistor Q7, and the gate of the MOS transistor Q9 are all electrically connected to the collector of the transistor Q11. The base of the transistor Q11 is electrically connected to the other end of the resistor R39. The emitter of the transistor Q11 is grounded. The drain of the MOS transistor Q7, the drain of the MOS transistor Q9, and the cathode of the diode D9 are all electrically connected to the anode of the diode D7.

[0050] The source of the MOS transistor Q8 , the source of the MOS transistor Q9 , the anode of the diode D8 , and the anode of the diode D9 are all grounded.

[0051] In this embodiment, Figure 3 As shown, the forward and reverse control circuit 5 is composed of switch transistors: MOS transistor Q6, MOS transistor Q7, MOS transistor Q8, MOS transistor Q9, transistor Q10 and transistor Q11; as well as resistors R36, R34, resistor JR10, resistor R35, resistor R39, diode D6, diode D7, diode D8 and diode D9. Among them, MOS transistor Q6 and MOS transistor Q7 constitute the upper bridge drive, MOS transistor Q8 and MOS transistor Q9 constitute the lower bridge drive, transistor Q10 and transistor Q11 constitute the forward and reverse control switch, and diode D6, diode D7, diode D8 and diode D9 constitute the back electromotive force protection of the motor.

[0052] The working principle of the forward and reverse control circuit 5 is:

[0053] When transistor Q10 and transistor Q11 are turned off, MOS transistor Q6 and MOS transistor Q7 are in the cut-off state, MOS transistor Q8 and MOS transistor Q9 are turned on and grounded. At this time, both ends of motor DJ-Z and DJ-F are grounded, and the motor does not work.

[0054] When transistor Q10 is turned on and transistor Q11 is turned off, MOS tubes Q6 and Q9 are turned on, and MOS tubes Q7 and Q8 are turned off. At this time, motor DJ-Z is 12V, DJ-F is grounded, and the motor rotates forward;

[0055] When transistor Q10 is turned off and transistor Q11 is turned on, MOS tubes Q6 and Q9 are turned off, and MOS tubes Q7 and Q8 are turned on. At this time, motor DJ-Z is grounded, DJ-F is 12V, and the motor reverses.

[0056] Furthermore, the forward and reverse control circuit 5 also includes a jam detection module 51; the source of the MOS tube Q8, the source of the MOS tube Q9, the anode of the diode D8 and the anode of the diode D9 are all grounded after passing through the jam detection module 51, and the output end of the jam detection module 51 is electrically connected to the second input end of the microcontroller 6.

[0057] In this embodiment, considering that the motor may get stuck during forward and reverse rotation, the milk preparation by only heating without forward and reverse rotation will seriously affect the taste and destroy the nutrients. In addition, the motor jam will cause the motor to heat up and may melt the bottle placement slot 1. Therefore, it is necessary to add a jam detection module 51 between the lower bridge drive and the ground to allow the microcontroller 6 to sense the signal change, so as to know whether a jam fault occurs during the forward and reverse rotation of the motor.

[0058] Furthermore, the jam detection module 51 includes a resistor R43, a resistor R44, and a resistor R45; the source of the MOS transistor Q8, the source of the MOS transistor Q9, the anode of the diode D8, the anode of the diode D9, one end of the resistor R43, one end of the resistor R44 are all electrically connected to one end of the resistor R45, the other end of the resistor R43 and the other end of the resistor R44 are both grounded, and the other end of the resistor R45 serves as the output end of the jam detection module 51.

[0059] In this embodiment, the jam detection module 51 mainly utilizes the resistor R44 and the resistor R43 to form a voltage divider circuit to obtain a voltage signal, which is fed back to the microcontroller 6 via the protection resistor R45 .

[0060] Furthermore, the NTC temperature detection circuit 31 includes a resistor R1, a resistor R2, and a capacitor C1; one end of the resistor R2 is used as an input end of the NTC temperature detection circuit 31, and the other end of the resistor R2 is used as an output end of the NTC temperature detection circuit 31;

[0061] One end of the resistor R1 is connected to a 5V power supply, the other end of the resistor R1 is electrically connected to the other end of the resistor R2, one end of the resistor R2 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded.

[0062] In this embodiment, Figure 4 As shown, the signal of the NTC temperature sensor 3 received by the NTC temperature detection circuit 31 usually has relatively little noise. The NTC temperature detection circuit 31 is preferably composed of a resistor R1, a resistor R2 and a capacitor C1, and can perform simple filtering and pull-up processing on the signal. The circuit structure is simple and the cost is low.

[0063] Furthermore, the PTC control circuit 41 includes a MOS transistor Q1, a resistor R3, and a resistor R4; the drain of the MOS transistor Q1 is used as the output end of the PTC control circuit 41, and one end of the resistor R3 is used as the input end of the PTC control circuit 41;

[0064] The other end of the resistor R3 and one end of the resistor R4 are both electrically connected to the gate of the MOS transistor Q1 , and the other end of the resistor R4 and the source of the MOS transistor Q1 are both grounded.

[0065] In this embodiment, the micro PTC heater 4 is used to realize multi-point heating. Therefore, the single-point control does not need to accurately control the temperature and power of the micro PTC heater 4. It only needs to choose to turn on or off the micro PTC heater 4. Figure 5 As shown, the PTC control circuit 41 is composed of a MOS transistor Q1, a resistor R3 and a resistor R4 to form a switch circuit, which can provide sufficient driving force through the MOS transistor Q1 to turn on or off the micro PTC heater 4 connected to a 12V power supply.

[0066] Other structures and operations of a milk shaker according to an embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0067] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A milk shaker comprising a bottle placement slot and a rotating slot, wherein the bottle placement slot is placed in the rotating slot and is rotatably connected to a motor shaft of the rotating slot; characterized in that: The invention also includes a forward and reverse control circuit, a plurality of NTC temperature sensors and a plurality of micro PTC heaters; the forward and reverse rotation of the forward and reverse control circuit is controlled by a switch tube, and the output end of the forward and reverse control circuit is electrically connected to the motor of the rotating slot; The NTC temperature sensor and the micro PTC heater are installed at intervals in the groove wall of the feeding bottle placement groove along the inner groove contour of the cross section of the feeding bottle placement groove.

2. A breast milk shaker according to claim 1, characterized in that: It also includes an NTC temperature detection circuit, a PTC control circuit and a microcontroller; the first control terminal of the microcontroller is electrically connected to the input terminal of the forward and reverse control circuit, the first input terminal of the microcontroller is electrically connected to the output terminal of the NTC temperature detection circuit, and the second control terminal of the microcontroller is electrically connected to the input terminal of the PTC control circuit; The NTC temperature sensors are electrically connected to the corresponding NTC temperature detection circuits, and the input ends of the NTC temperature detection circuits are electrically connected to the NTC temperature sensors; The micro PTC heaters are electrically connected to the corresponding PTC control circuits, and the output end of the PTC control circuit is electrically connected to the micro PTC heaters.

3. A milk shaker according to claim 2, characterized in that: The forward and reverse control circuit includes a resistor R36, a resistor R34, a resistor JR10, a resistor R35, a resistor R39, a diode D6, a diode D7, a diode D8, a diode D9, a MOS transistor Q6, a MOS transistor Q7, a MOS transistor Q8, a MOS transistor Q9, a transistor Q10, and a transistor Q11; one end of the resistor R36 and one end of the resistor R39 are both used as input ends of the forward and reverse control circuit, and the anode of the diode D6 and the anode of the diode D7 are both used as output ends of the forward and reverse control circuit; One end of the resistor R34, the source of the MOS transistor Q6, the cathode of the diode D6, one end of the resistor R35, the source of the MOS transistor Q7 and the cathode of the diode D7 are all connected to a 12V power supply; The other end of the resistor R34 and the gate of the MOS transistor Q6 are electrically connected to one end of the resistor JR10. The other end of the resistor JR10 and the gate of the MOS transistor Q8 are electrically connected to the collector of the transistor Q10. The base of the transistor Q10 is electrically connected to the other end of the resistor R36. The emitter of the transistor Q10 is grounded. The drain of the MOS transistor Q6, the drain of the MOS transistor Q8, and the cathode of the diode D8 are electrically connected to the anode of the diode D6. The other end of the resistor R35, the gate of the MOS transistor Q7, and the gate of the MOS transistor Q9 are all electrically connected to the collector of the transistor Q11, the base of the transistor Q11 is electrically connected to the other end of the resistor R39, the emitter of the transistor Q11 is grounded, and the drain of the MOS transistor Q7, the drain of the MOS transistor Q9, and the cathode of the diode D9 are all electrically connected to the anode of the diode D7; The source of the MOS transistor Q8 , the source of the MOS transistor Q9 , the anode of the diode D8 , and the anode of the diode D9 are all grounded.

4. A breast milk shaker according to claim 3, characterized in that: The forward and reverse control circuit also includes a jam detection module; the source of the MOS transistor Q8, the source of the MOS transistor Q9, the anode of the diode D8, and the anode of the diode D9 are all grounded after passing through the jam detection module, and the output end of the jam detection module is electrically connected to the second input end of the microcontroller.

5. A breast milk shaker according to claim 4, characterized in that: The jam detection module includes a resistor R43, a resistor R44, and a resistor R45; the source of the MOS transistor Q8, the source of the MOS transistor Q9, the anode of the diode D8, the anode of the diode D9, one end of the resistor R43, one end of the resistor R44, and one end of the resistor R45 are electrically connected, the other ends of the resistor R43 and the other ends of the resistor R44 are grounded, and the other end of the resistor R45 serves as the output end of the jam detection module.

6. A breast milk shaker according to claim 2, characterized in that: The NTC temperature detection circuit includes a resistor R1, a resistor R2 and a capacitor C1; one end of the resistor R2 is used as an input end of the NTC temperature detection circuit, and the other end of the resistor R2 is used as an output end of the NTC temperature detection circuit; One end of the resistor R1 is connected to a 5V power supply, the other end of the resistor R1 is electrically connected to the other end of the resistor R2, one end of the resistor R2 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded.

7. A breast milk shaker according to claim 2, characterized in that: The PTC control circuit includes a MOS transistor Q1, a resistor R3, and a resistor R4; the drain of the MOS transistor Q1 is used as the output end of the PTC control circuit, and one end of the resistor R3 is used as the input end of the PTC control circuit; The other end of the resistor R3 and one end of the resistor R4 are both electrically connected to the gate of the MOS transistor Q1 , and the other end of the resistor R4 and the source of the MOS transistor Q1 are both grounded.

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