Electromagnetic valve system and breast pump

Abstract

The utility model discloses an electromagnetic valve system and a breast pump, and relates to the field of circuit design. Wherein the first end of the monitoring circuit is connected with the first end of the airflow pipeline device, the second end of the monitoring circuit is connected with the first end of the power-off protection circuit, and the third end of the monitoring circuit is connected with the first end of the first adjusting circuit; the second end of the first adjusting circuit is connected with the second end of the power-off protection circuit, the third end of the first adjusting circuit is connected with the first end of the air pump, and the fourth end of the first adjusting circuit is connected with the first end of the electromagnetic valve circuit; the second end of the electromagnetic valve circuit is connected with the second end of the airflow pipeline device, and the third end of the electromagnetic valve circuit is connected with the third end of the power-off protection circuit; the second end of the air pump is connected with the third end of the airflow pipeline device, and the third end of the air pump is connected with the fourth end of the power-off protection circuit. Therefore, the power-off protection circuit can control the electromagnetic valve system, and unnecessary energy consumption of electrical elements is avoided.

Description

Technical Field

[0001] The utility model relates to the field of circuit design, in particular to a solenoid valve system and a breast pump. Background Art

[0002] A breast pump is a breastfeeding aid that is used by breastfeeding mothers to relieve milk swelling or pump milk. It can be used to suck out milk at any time to relieve bloating and pain when the breasts are swelling, regardless of whether the baby is around. The sucked milk can be refrigerated and stored for the baby to eat.

[0003] Among them, more and more breast pumps are beginning to use solenoid valve systems to adjust the suction of the breast pumps. However, when the breast pumps are not working, some electrical components of the solenoid valve systems of existing breast pumps will still consume power from the power supply. Therefore, it will not only cause unnecessary energy waste and reduce the service life of the power supply, but also pose certain safety hazards.

[0004] In view of the above technology, seeking a solenoid valve system is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a solenoid valve system and a breast pump, which can solve the energy waste problem of the solenoid valve system in the prior art.

[0006] In order to solve the above technical problems, the utility model provides a solenoid valve system, comprising: a first regulating circuit, a solenoid valve circuit, a monitoring circuit, a power-off protection circuit and an air pump;

[0007] Wherein, the first end of the monitoring circuit is connected to the first end of the airflow duct device, the second end of the monitoring circuit is connected to the first end of the power-off protection circuit, and the third end of the monitoring circuit is connected to the first end of the first regulating circuit;

[0008] The second end of the first regulating circuit is connected to the second end of the power-off protection circuit, the third end of the first regulating circuit is connected to the first end of the air pump, and the fourth end of the first regulating circuit is connected to the first end of the solenoid valve circuit;

[0009] The second end of the solenoid valve circuit is connected to the second end of the airflow duct device, and the third end of the solenoid valve circuit is connected to the third end of the power-off protection circuit;

[0010] The second end of the air pump is connected to the third end of the airflow duct device, and the third end of the air pump is connected to the fourth end of the power-off protection circuit.

[0011] Preferably, the power-off protection circuit includes a MOS tube and a triode;

[0012] The drain of the MOS tube is connected to the second end of the monitoring circuit as the first end of the power-off protection circuit, is connected to the second end of the first regulating circuit as the second end of the power-off protection circuit, is connected to the third end of the solenoid valve circuit as the third end of the power-off protection circuit, and is connected to the third end of the air pump as the fourth end of the power-off protection circuit;

[0013] The source of the MOS tube is connected to the power supply, and the gate of the MOS tube is connected to the collector of the transistor;

[0014] The base of the transistor is connected to the switch, and the emitter of the transistor is grounded.

[0015] Preferably, the solenoid valve circuit comprises: a first solenoid subcircuit and a second solenoid subcircuit;

[0016] Wherein, the first end of the first electromagnetic sub-circuit and the first end of the second electromagnetic sub-circuit are connected to the fourth end of the first regulating circuit as the first end of the electromagnetic valve circuit;

[0017] The second end of the first electromagnetic subcircuit and the second end of the second electromagnetic subcircuit together serve as the second end of the electromagnetic valve circuit and are connected to the third end of the airflow conduit device;

[0018] The third end of the first electromagnetic sub-circuit and the third end of the second electromagnetic sub-circuit are connected to the third end of the power-off protection circuit as the third end of the electromagnetic valve circuit.

[0019] Preferably, the first electromagnetic subcircuit comprises: a first electromagnetic valve;

[0020] The first end of the first solenoid valve is connected to the fourth end of the first regulating circuit as the first end of the first electromagnetic subcircuit; the second end of the first solenoid valve is connected to the third end of the airflow duct device as the second end of the first electromagnetic subcircuit; the third end of the first solenoid valve is connected to the third end of the power-off protection circuit as the third end of the first electromagnetic subcircuit; the first channel of the first solenoid valve is connected to the fourth end of the air pump through a pipeline;

[0021] The second electromagnetic subcircuit includes: a second electromagnetic valve;

[0022] The first end of the second solenoid valve is connected to the fourth end of the first regulating circuit as the first end of the second electromagnetic sub-circuit; the second end of the second solenoid valve is connected to the third end of the airflow duct device as the second end of the second electromagnetic sub-circuit; the third end of the second solenoid valve is connected to the third end of the power-off protection circuit as the third end of the second electromagnetic sub-circuit; the first channel of the second solenoid valve is connected to the fourth end of the air pump through a pipeline.

[0023] Preferably, the monitoring circuit comprises: a first air pressure sensor and a second air pressure sensor;

[0024] The first air pressure sensor is connected to the second channel of the first solenoid valve through a pipeline;

[0025] The second air pressure sensor is connected to the second channel of the second solenoid valve through a pipeline.

[0026] Preferably, it further comprises: a first driving circuit and a second driving circuit;

[0027] Wherein, the first end of the first driving circuit is connected to the fourth end of the first regulating circuit, and the second end of the first driving circuit is connected to the first end of the solenoid valve circuit;

[0028] The first end of the second driving circuit is connected to the third end of the first regulating circuit, and the second end of the second driving circuit is connected to the first end of the air pump.

[0029] Preferably, it further comprises: a first voltage stabilizing circuit and a second voltage stabilizing circuit;

[0030] Wherein, the first end of the first voltage stabilizing circuit is connected to the second end of the first regulating circuit, and the second end of the first voltage stabilizing circuit is connected to the second end of the power-off protection circuit;

[0031] The first end of the second voltage stabilizing circuit is connected to the second end of the monitoring circuit, and the second end of the second voltage stabilizing circuit is connected to the first end of the power-off protection circuit.

[0032] Preferably, the first voltage stabilizing circuit comprises: a first voltage stabilizer, a first end of the first voltage stabilizer being connected to a second end of the first regulating circuit as a first end of the first voltage stabilizing circuit, and a second end of the first voltage stabilizer being connected to a second end of the power-off protection circuit as a second end of the first voltage stabilizing circuit;

[0033] The second voltage stabilization circuit includes: a second voltage stabilizer, a first end of the second voltage stabilizer is connected to the second end of the monitoring circuit as the first end of the second voltage stabilization circuit, and a second end of the second voltage stabilizer is connected to the first end of the power-off protection circuit as the second end of the second voltage stabilization circuit.

[0034] Preferably, it further includes: a first step-down circuit and a second step-down circuit:

[0035] Wherein, the first end of the first step-down circuit is connected to the third end of the power-off protection circuit, and the second end of the first step-down circuit is connected to the third end of the solenoid valve circuit;

[0036] The first end of the second step-down circuit is connected to the fourth end of the power-off protection circuit, and the second end of the second step-down circuit is connected to the third end of the air pump.

[0037] Preferably, it also includes: a second regulating circuit and a power supply circuit;

[0038] The first terminal of the second regulating circuit is connected to the fourth terminal of the first regulating circuit;

[0039] The first terminal of the power supply circuit is connected to the fifth terminal of the power-off protection circuit.

[0040] In order to solve the above technical problems, the present application also provides a breast pump, including the above solenoid valve system.

[0041] The utility model provides a solenoid valve system, comprising: a first regulating circuit, a solenoid valve circuit, a monitoring circuit, a power-off protection circuit and an air pump; wherein the first end of the monitoring circuit is connected to the first end of the airflow duct device, the second end of the monitoring circuit is connected to the first end of the power-off protection circuit, and the third end of the monitoring circuit is connected to the first end of the first regulating circuit; the second end of the first regulating circuit is connected to the second end of the power-off protection circuit, the third end of the first regulating circuit is connected to the first end of the air pump, and the fourth end of the first regulating circuit is connected to the first end of the solenoid valve circuit; the second end of the solenoid valve circuit is connected to the second end of the airflow duct device, and the third end of the solenoid valve circuit is connected to the third end of the power-off protection circuit; the second end of the air pump is connected to the third end of the airflow duct device, and the third end of the air pump is connected to the fourth end of the power-off protection circuit. It can be seen that according to the circuit connection relationship provided in the present application, the monitoring circuit monitors the air pressure of the airflow duct device in real time, and then controls the solenoid valve circuit and the air pump through the first regulating circuit to regulate the air pressure of the airflow duct device. During this process, the power-off protection circuit connects the first regulating circuit, the solenoid valve circuit, the monitoring circuit and the air pump. The power-off protection circuit can be used to cut off the power and start the solenoid valve system, thereby realizing control of the solenoid valve system and avoiding unnecessary energy consumption of electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A structural diagram of a solenoid valve system provided in an embodiment of the present application;

[0044] Figure 2 A circuit diagram of a power-off protection circuit provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of an airflow duct device provided in an embodiment of the present application;

[0046] Figure 4 A structural diagram of a complete solenoid valve system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0048] The core of the utility model is to provide a solenoid valve system and a breast pump.

[0049] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] Figure 1 The structure diagram of a solenoid valve system provided in the embodiment of the present application, as shown in the figure, includes: a first regulating circuit 1, a solenoid valve circuit 2, a monitoring circuit 3, a power-off protection circuit 4 and an air pump 5, in addition to Figure 1 The airflow duct device 6 is also included. The connection relationship of the device is as follows: the first end of the monitoring circuit 3 is connected to the first end of the airflow duct device 6, the second end of the monitoring circuit 3 is connected to the first end of the power-off protection circuit 4, and the third end of the monitoring circuit 3 is connected to the first end of the first regulating circuit 1; the second end of the first regulating circuit 1 is connected to the second end of the power-off protection circuit 4, the third end of the first regulating circuit 1 is connected to the first end of the air pump 5, and the fourth end of the first regulating circuit 1 is connected to the first end of the solenoid valve circuit 2; the second end of the solenoid valve circuit 2 is connected to the second end of the airflow duct device 6, and the third end of the solenoid valve circuit 2 is connected to the third end of the power-off protection circuit 4; the second end of the air pump 5 is connected to the third end of the airflow duct device 6, and the third end of the air pump 5 is connected to the fourth end of the power-off protection circuit 4.

[0051] In a specific embodiment, the monitoring circuit 3 monitors the air pressure of the airflow duct device 6 and outputs a first electrical signal to the first regulating circuit 1; the first regulating circuit 1 determines the corresponding second electrical signal and third electrical signal based on the adjustment instruction input by the user and the first electrical signal, and outputs the second electrical signal to the solenoid valve circuit 2, and outputs the third electrical signal to the air pump 5; the solenoid valve circuit 2 and the air pump 5 are used to adjust the air pressure of the airflow duct device 6; the power-off protection circuit 4 connects the first regulating circuit 1, the solenoid valve circuit 2, the monitoring circuit 3 and the air pump 5, and is used to receive the shutdown instruction input by the user and cut off the power output of the power module, that is, the solenoid valve system can be powered off and started through the power-off protection circuit 5, thereby realizing the control of the solenoid valve system and avoiding unnecessary energy consumption of electrical components.

[0052] Among them, as a preference, the monitoring circuit 3 includes at least one negative pressure sensor; the first regulating circuit 1 includes a single-chip microcomputer; the solenoid valve circuit 2 includes at least one solenoid valve, but it should be noted that the present application does not limit the specific structure of the first regulating circuit 1, the solenoid valve circuit 2, the monitoring circuit 3, and the power-off protection circuit 4, and can be set according to the needs of the user.

[0053] The utility model provides a solenoid valve system, comprising: a first regulating circuit, a solenoid valve circuit, a monitoring circuit, a power-off protection circuit and an air pump; wherein the first end of the monitoring circuit is connected to the first end of the airflow duct device, the second end of the monitoring circuit is connected to the first end of the power-off protection circuit, and the third end of the monitoring circuit is connected to the first end of the first regulating circuit; the second end of the first regulating circuit is connected to the second end of the power-off protection circuit, the third end of the first regulating circuit is connected to the first end of the air pump, and the fourth end of the first regulating circuit is connected to the first end of the solenoid valve circuit; the second end of the solenoid valve circuit is connected to the second end of the airflow duct device, and the third end of the solenoid valve circuit is connected to the third end of the power-off protection circuit; the second end of the air pump is connected to the third end of the airflow duct device, and the third end of the air pump is connected to the fourth end of the power-off protection circuit. It can be seen that according to the circuit connection relationship provided in the present application, the monitoring circuit monitors the air pressure of the airflow duct device in real time, and then controls the solenoid valve circuit and the air pump through the first regulating circuit to regulate the air pressure of the airflow duct device. During this process, the power-off protection circuit connects the first regulating circuit, the solenoid valve circuit, the monitoring circuit and the air pump. The power-off protection circuit can be used to cut off the power and start the solenoid valve system, thereby realizing control of the solenoid valve system and avoiding unnecessary energy consumption of electrical components.

[0054] Based on the above embodiments, as a preferred embodiment, Figure 2As shown, the power-off protection circuit includes a MOS tube Q1 and a transistor Q2. In addition, it also includes: a first resistor R1, a first capacitor C1, a first diode D1, a second resistor R2, a third resistor R3, a fourth resistor R4, a second diode D2, a third diode D3 and a fourth diode D4. The connection relationship of the circuit is: the drain of the MOS tube Q1 is connected to the second end of the monitoring circuit 3 as the first end of the power-off protection circuit 4, is connected to the second end of the first regulating circuit 1 as the second end of the power-off protection circuit 4, is connected to the third end of the solenoid valve circuit 2 as the third end of the power-off protection circuit 4, and is connected to the third end of the air pump 5 as the fourth end of the power-off protection circuit 4; the source of the MOS tube Q1 is connected to the first end of the first resistor R1, the first end of the first capacitor C1, the first end of the first diode D1 and the power supply (CN4), the gate of the MOS tube Q1 is connected to the first end of the second resistor R2 and the second end of the first resistor R1, and the second end of the second diode D2 is connected to the third end of the first regulating circuit 1. The second end of the first resistor is connected to the collector of the transistor Q2; the second end of the first capacitor C1 and the second end of the first diode D1 are connected to the power supply; the base of the transistor Q2 is connected to the first end of the fourth resistor R4 and the first end of the third resistor R3, the emitter of the transistor Q2 is connected to the second end of the third resistor R3, and is grounded; the second end of the fourth resistor R4 is connected to the first end of the second diode D2, the first end of the third diode D3 and the first end of the fourth diode D4; the second end of the second diode D2 and the second end of the third diode D3 are connected to the switch (SW and SW1), and the second end of the fourth diode D2 is connected to the external circuit (DCIN).

[0055] The power supply in the circuit supplies power to it, and the switches (SW and SW1) are used to receive the user's instructions and control the conduction of the transistor Q2, the MOS tube Q1 and the transistor Q2, thereby controlling the conduction and shutoff of the first regulating circuit 1, the solenoid valve circuit 2, the monitoring circuit 3 and the air pump 5 connected thereto. The resistors, diodes and capacitors of the circuit are required for conventional circuits.

[0056] It should be noted that the circuit provided in this application is only one possible implementation method, but is not limited to this implementation method and can be set according to the needs of the user.

[0057] The present application provides a specific structure of a power-off protection circuit. Under this structure, the power-off protection circuit can control the power-off or start-up of the solenoid valve system by receiving instructions from the user, thereby achieving control over the solenoid valve system and avoiding unnecessary energy consumption of electrical components.

[0058] Based on the above embodiments, as a preferred embodiment, Figure 1 and 3As shown, the solenoid valve circuit includes: a first electromagnetic subcircuit and a second electromagnetic subcircuit; and the first electromagnetic subcircuit is specifically the first electromagnetic valve 21, and the second electromagnetic subcircuit is specifically 22. In addition, the monitoring circuit 3 includes a first air pressure sensor 61 and a second air pressure sensor 62. The connection relationship of the circuit is: the first end of the first electromagnetic valve 21 is connected to the fourth end of the first regulating circuit 1; the second end of the first electromagnetic valve 21 is connected to the third end of the airflow pipeline device 6; the third end of the first electromagnetic valve 21 is connected to the third end of the power-off protection circuit 4; the first channel of the first electromagnetic valve 21 is connected to the fourth end of the air pump 5 through a pipeline; the second channel of the first electromagnetic valve 21 is connected to the first air pressure sensor 61 through a pipeline; the first end of the second electromagnetic valve 22 is connected to the fourth end of the first regulating circuit 1; the second end of the second electromagnetic valve 22 is connected to the third end of the airflow pipeline device 6; the third end of the second electromagnetic valve 22 is connected to the third end of the power-off protection circuit 4; the first channel of the second electromagnetic valve 22 is connected to the fourth end of the air pump 6 through a pipeline; the second channel of the second electromagnetic valve 22 is connected to the second air pressure sensor 62.

[0059] In a specific embodiment, the first electromagnetic subcircuit and the second electromagnetic subcircuit have the same structure, and are mainly used to control the switches of the corresponding channels. It can also be understood that the first electromagnetic subcircuit and the second electromagnetic subcircuit are redundant with each other. The first air pressure sensor 61 and the second air pressure sensor 62 are used to obtain the air pressure of the current pipeline, and can also be understood as redundant with each other.

[0060] In addition, Figure 4As shown, the solenoid valve system also includes: a first drive circuit 7, a second drive circuit 8, a first voltage stabilizing circuit 9, a second voltage stabilizing circuit 10, a first step-down circuit 11, a second step-down circuit 12, a second regulating circuit 13 and a power supply circuit 14. The connection relationship of the circuit is as follows: the first end of the first drive circuit 7 is connected to the fourth end of the first regulating circuit 1, and the second end of the first drive circuit 7 is connected to the first end of the solenoid valve circuit 2; the first end of the second drive circuit 8 is connected to the third end of the first regulating circuit 1, and the second end of the second drive circuit 8 is connected to the first end of the air pump 5; the first end of the first voltage stabilizing circuit 9 is connected to the second end of the first regulating circuit 1, and the second end of the first voltage stabilizing circuit 9 is connected to the second end of the power-off protection circuit 4; the first end of the second voltage stabilizing circuit 10 is connected to the second end of the monitoring circuit 3, and the second end of the second voltage stabilizing circuit 10 is connected to the first end of the power-off protection circuit 4; the first end of the first step-down circuit 11 is connected to the third end of the power-off protection circuit 4, and the second end of the first step-down circuit 11 is connected to the third end of the solenoid valve circuit 2; the first end of the second step-down circuit 12 is connected to the fourth end of the power-off protection circuit 4, and the second end of the second step-down circuit 12 is connected to the third end of the air pump 5; the first end of the second regulating circuit 13 is connected to the fourth end of the first regulating circuit 1; the first end of the power supply circuit 14 is connected to the fifth end of the power-off protection circuit 4.

[0061] In a specific embodiment, the first drive circuit 7 receives the second electrical signal sent by the first regulating circuit 1, and sends a first drive signal corresponding to the second electrical signal to the solenoid valve circuit 2, so that the solenoid valve circuit 2 adjusts the air pressure of the airflow duct device 6 according to the first drive signal; the second drive circuit 8 receives the third electrical signal sent by the first regulating circuit 1, and sends a second drive signal corresponding to the third electrical signal to the air pump 5, so that the air pump 5 adjusts the air pressure of the airflow duct device 6 according to the second drive signal; the first voltage stabilizing circuit 9 is used to adjust the initial electric energy signal output by the power supply circuit 14 to a first power supply signal matching the first regulating circuit 1, and to supply power to the first regulating circuit 1; the second voltage stabilizing circuit 10 is used to adjust the initial electric energy signal output by the power supply circuit 14 to a second power supply signal matching the monitoring circuit 3, and to supply power to the monitoring circuit 3; the first step-down circuit 11 is used to adjust the initial electric energy signal output by the power supply circuit 14 to a third power supply signal matching the solenoid valve circuit 2, and to supply power to the solenoid valve circuit 2; the second step-down circuit 12 is used to adjust the initial electric energy signal output by the power supply circuit 14 to a third power supply signal matching the air pump 5, and to supply power to the air pump 5. The second regulating circuit 13 is used for receiving the regulating instruction and outputting the regulating instruction to the first regulating circuit 1 .

[0062] Preferably, the second regulating circuit 13 includes but is not limited to electronic buttons, touch buttons and / or knobs; the first voltage stabilizing circuit 9 and the second voltage stabilizing circuit 10 include field effect transistors.

[0063] Preferably, the first voltage stabilizing circuit is a first voltage stabilizer, and the second voltage stabilizing circuit is a second voltage stabilizer.

[0064] It should be noted that the present application does not limit the specific structures of the first drive circuit 7, the second drive circuit 8, the first voltage stabilizing circuit 9, the second voltage stabilizing circuit 10, the first voltage step-down circuit 11, the second voltage step-down circuit 12, the second regulating circuit 13 and the power supply circuit 14, which can be set according to the needs of the user.

[0065] The utility model provides a solenoid valve system, from the circuit connection relationship, it can be known that the monitoring circuit monitors the air pressure of the airflow pipeline device in real time, and then controls the solenoid valve circuit and the air pump through the first regulating circuit to regulate the air pressure of the airflow pipeline device. In this process, the power-off protection circuit is connected to the first regulating circuit, the solenoid valve circuit, the monitoring circuit and the air pump, and the power-off protection circuit can realize the power-off and start-up of the solenoid valve system, and then realize the control of the solenoid valve system, avoiding unnecessary energy consumption of electrical components.

[0066] To solve the above technical problems, the present application also provides a breast pump, including the above electromagnetic valve system, and having the same beneficial effects. Since the embodiment of the breast pump is the same as the embodiment of the above electromagnetic valve system, the present application will not elaborate on it here.

[0067] The above is a detailed introduction to a solenoid valve system and a breast pump provided by the utility model. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0068] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A solenoid valve system, characterized in that: include: A first regulating circuit, a solenoid valve circuit, a monitoring circuit, a power-off protection circuit and an air pump; Wherein, the first end of the monitoring circuit is connected to the first end of the airflow duct device, the second end of the monitoring circuit is connected to the first end of the power-off protection circuit, and the third end of the monitoring circuit is connected to the first end of the first regulating circuit; The second end of the first regulating circuit is connected to the second end of the power-off protection circuit, the third end of the first regulating circuit is connected to the first end of the air pump, and the fourth end of the first regulating circuit is connected to the first end of the solenoid valve circuit; The second end of the solenoid valve circuit is connected to the second end of the airflow duct device, and the third end of the solenoid valve circuit is connected to the third end of the power-off protection circuit; The second end of the air pump is connected to the third end of the airflow duct device, and the third end of the air pump is connected to the fourth end of the power-off protection circuit.

2. The solenoid valve system according to claim 1, characterized in that: The power-off protection circuit includes a MOS tube and a triode; The drain of the MOS tube is connected to the second end of the monitoring circuit as the first end of the power-off protection circuit, is connected to the second end of the first regulating circuit as the second end of the power-off protection circuit, is connected to the third end of the solenoid valve circuit as the third end of the power-off protection circuit, and is connected to the third end of the air pump as the fourth end of the power-off protection circuit; The source of the MOS tube is connected to a power supply, and the gate of the MOS tube is connected to the collector of the triode; The base of the transistor is connected to the switch, and the emitter of the transistor is grounded.

3. The solenoid valve system according to claim 1, characterized in that: The solenoid valve circuit comprises: a first solenoid subcircuit and a second solenoid subcircuit; The first end of the first electromagnetic sub-circuit and the first end of the second electromagnetic sub-circuit are connected to the fourth end of the first regulating circuit as the first end of the electromagnetic valve circuit; The second end of the first electromagnetic subcircuit and the second end of the second electromagnetic subcircuit together serve as the second end of the electromagnetic valve circuit and are connected to the third end of the airflow duct device; The third end of the first electromagnetic sub-circuit and the third end of the second electromagnetic sub-circuit are commonly connected to the third end of the power-off protection circuit as the third end of the electromagnetic valve circuit.

4. The solenoid valve system according to claim 3, characterized in that: The first electromagnetic subcircuit includes: a first electromagnetic valve; The first end of the first solenoid valve is connected to the fourth end of the first regulating circuit as the first end of the first solenoid subcircuit; the second end of the first solenoid valve is connected to the third end of the airflow duct device as the second end of the first solenoid subcircuit; the third end of the first solenoid valve is connected to the third end of the power-off protection circuit as the third end of the first solenoid subcircuit; the first channel of the first solenoid valve is connected to the fourth end of the air pump through a pipeline; The second electromagnetic subcircuit includes: a second electromagnetic valve; The first end of the second solenoid valve is connected to the fourth end of the first regulating circuit as the first end of the second electromagnetic sub-circuit; the second end of the second solenoid valve is connected to the third end of the airflow duct device as the second end of the second electromagnetic sub-circuit; the third end of the second solenoid valve is connected to the third end of the power-off protection circuit as the third end of the second electromagnetic sub-circuit; the first channel of the second solenoid valve is connected to the fourth end of the air pump through a pipeline.

5. The solenoid valve system according to claim 4, characterized in that: The monitoring circuit includes: a first air pressure sensor and a second air pressure sensor; The first air pressure sensor is connected to the second channel of the first solenoid valve through a pipeline; The second air pressure sensor is connected to the second channel of the second solenoid valve through a pipeline.

6. The solenoid valve system according to claim 1, characterized in that: Also includes: a first driving circuit and a second driving circuit; Wherein, the first end of the first driving circuit is connected to the fourth end of the first regulating circuit, and the second end of the first driving circuit is connected to the first end of the solenoid valve circuit; The first end of the second driving circuit is connected to the third end of the first regulating circuit, and the second end of the second driving circuit is connected to the first end of the air pump.

7. The solenoid valve system according to claim 1, characterized in that: Also includes: A first voltage stabilizing circuit and a second voltage stabilizing circuit; Wherein, the first end of the first voltage stabilizing circuit is connected to the second end of the first regulating circuit, and the second end of the first voltage stabilizing circuit is connected to the second end of the power-off protection circuit; The first end of the second voltage stabilizing circuit is connected to the second end of the monitoring circuit, and the second end of the second voltage stabilizing circuit is connected to the first end of the power-off protection circuit.

8. The solenoid valve system according to claim 7, characterized in that: The first voltage stabilizing circuit comprises: a first voltage stabilizer, a first end of the first voltage stabilizer being connected to a second end of the first regulating circuit as a first end of the first voltage stabilizing circuit, and a second end of the first voltage stabilizer being connected to a second end of the power-off protection circuit as a second end of the first voltage stabilizing circuit; The second voltage stabilizing circuit includes: a second voltage stabilizer, a first end of the second voltage stabilizer being connected to the second end of the monitoring circuit as the first end of the second voltage stabilizing circuit, and a second end of the second voltage stabilizer being connected to the first end of the power-off protection circuit as the second end of the second voltage stabilizing circuit.

9. The solenoid valve system according to any one of claims 1 to 8, characterized in that: Also includes: A first step-down circuit, a second step-down circuit, a second regulating circuit and a power supply circuit; Wherein, the first end of the first step-down circuit is connected to the third end of the power-off protection circuit, and the second end of the first step-down circuit is connected to the third end of the solenoid valve circuit; The first end of the second step-down circuit is connected to the fourth end of the power-off protection circuit, and the second end of the second step-down circuit is connected to the third end of the air pump; The first end of the second regulating circuit is connected to the fourth end of the first regulating circuit; The first end of the power supply circuit is connected to the fifth end of the power-off protection circuit.

10. A breast pump, characterized in that: A solenoid valve system comprising any one of claims 1-9.

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