A breast pump with a liquid level detection device

Abstract

The utility model relates to the technical field of maternal and infant feeding, specifically is a breast pump with liquid level detection device, including host computer, host computer casing and milk storage casing, host computer sets up in the host computer casing, and milk storage casing has the milk storage cavity, and the host computer casing is installed with liquid level sensor, and the waterproof sealing structure is installed between the host computer casing and liquid level sensor, and the installation surface elasticity of waterproof sealing structure presses in liquid level sensor surface and / or the surface of host computer casing, and liquid level sensor passes through waterproof sealing structure electricity connection host computer. The utility model improves waterproof sealing effect of installation position through waterproof sealing structure between host computer casing and liquid level sensor, and through installation surface elasticity presses in liquid level sensor surface and the surface of host computer casing, avoids the situation that installation gap is easily infiltrated liquid and enters host computer casing inside, and easily user cleans the surface liquid trace, realizes waterproof sealing effect, and the characteristic of elasticity presses in facilitates assembly personnel to dismount waterproof sealing structure, improves assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of maternal and infant feeding technology, specifically a breast pump with a liquid level detection device. Background Technology

[0002] Breast pumps are common tools used by mothers to collect breast milk. The collected milk usually flows into the pump's storage compartment for measured feeding of the baby. With existing breast pumps, mothers typically need to constantly monitor the milk level in the storage compartment. Since the compartment has a fixed capacity, milk must be removed promptly when full to prevent overflow, waste, and contamination. To address this, manufacturers install level sensors on breast pumps to detect milk levels. However, these sensors can allow liquid to seep into the main unit during use or cleaning, making cleaning difficult and potentially affecting internal circuitry, thus hindering user convenience.

[0003] To address the above shortcomings, we need to develop a breast pump with a liquid level detection device to meet the needs of a wide range of users. Utility Model Content

[0004] Regarding the aforementioned problem of leakage into the interior of existing breast pumps due to the installation location of the liquid level sensor, the technical solution adopted by this utility model to solve this problem is: A breast pump with a liquid level detection device includes a main unit, a main unit housing, and a milk storage housing. The main unit is disposed inside the main unit housing. The milk storage housing has a milk storage cavity. A liquid level sensor for detecting the level of milk is installed on the main unit housing near the milk storage cavity. A waterproof sealing structure is installed between the main unit housing and the liquid level sensor. The mounting surface of the waterproof sealing structure elastically presses against the surface of the liquid level sensor and / or the surface of the main unit housing. The liquid level sensor passes through the waterproof sealing structure and is electrically connected to the main unit.

[0005] As described above, in a breast pump with a liquid level detection device, the liquid level sensor is located at the top near the milk storage chamber, and the wall thickness of the milk storage shell on the side near the liquid level sensor is less than the maximum detection distance of the liquid level sensor.

[0006] As described above, a breast pump with a liquid level detection device has a sensing assembly hole in the main housing for mounting the liquid level sensor. The waterproof sealing structure includes a soft mounting clip for sealing the liquid level sensor. The soft mounting clip is installed in the sensing assembly hole, such that the detection end of the liquid level sensor faces the milk storage chamber.

[0007] As described above, a breast pump with a liquid level detection device has an outer mounting groove on the outside of the soft mounting buckle for easy positioning and installation. The sensing mounting opening has a raised limiting edge for engaging the outer mounting groove, and the raised limiting edge protrudes towards the inside of the main housing.

[0008] As described above, in a breast pump with a liquid level detection device, the inner side of the soft mounting buckle is provided with an inner mounting groove for easy sealing installation, and the liquid level sensor is fastened to the inner mounting groove so that the detection end of the liquid level sensor does not protrude from the surface of the main housing.

[0009] As described above, in a breast pump with a liquid level detection device, the soft mounting buckle is installed in the sensor mounting hole via a sensor mounting bracket. The sensor mounting bracket is fastened to the outer mounting groove of the soft mounting buckle to restrict the axial movement of the liquid level sensor. The sensor mounting bracket is located inside the main housing.

[0010] As described above, in a breast pump with a liquid level detection device, the soft mounting buckle extends in a direction away from the sensing mounting opening to form a mounting handle for easy assembly and disassembly. The soft mounting buckle is made of silicone material.

[0011] As described above, a breast pump with a liquid level detection device has a milk inlet in the milk storage chamber for milk to flow in, and the bottom of the main body housing includes a left section a and a right section b located on the left and right sides of the milk inlet, respectively. At least two liquid level sensors are respectively arranged within the range of the left section a and the right section b.

[0012] As described above, in a breast pump with a liquid level detection device, the liquid level sensor is a capacitive liquid level sensor or a capacitive liquid level sensing element.

[0013] The breast pump with a liquid level detection device as described above also includes an alarm reminder module electrically connected to the main unit. When the liquid level sensor detects that the milk level has risen to a preset position, the alarm reminder module issues an alarm message and stops the breast pump from pumping milk.

[0014] The beneficial effects of this utility model are as follows: This invention features a liquid level sensor installed on the main housing for detecting the level of milk. A waterproof sealing structure is used between the main housing and the liquid level sensor to improve the waterproof sealing effect at the installation location. The mounting surface elastically presses against the surface of the liquid level sensor and the main housing, preventing liquid from easily seeping into the main housing through the installation gap. This makes it easy for users to clean liquid traces on the surface, achieving a waterproof sealing effect. The elastic pressing feature of the mounting surface facilitates the installation and removal of the waterproof sealing structure by assembly personnel, improving assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a top view of a breast pump with a liquid level detection device according to the present invention.

[0016] Figure 2 for Figure 1 AA section view.

[0017] Figure 3 This is an internal structural diagram of a breast pump with a liquid level detection device according to the present invention.

[0018] Figure 4 for Figure 2 C magnified view.

[0019] Figure 5 for Figure 3 A magnified view of D.

[0020] Figure 6 for Figure 1 BB section view.

[0021] Figure 7 for Figure 6 The E-magnified view.

[0022] Figure 8 This is a bottom view of a breast pump with a liquid level detection device according to the present invention.

[0023] Figure 9 This is an internal structural diagram of another breast pump with a liquid level detection device according to the present invention. Detailed Implementation

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1: As Figures 1 to 8The breast pump shown includes a main unit, a main unit housing 1, and a milk storage housing 2. The main unit is disposed inside the main unit housing 1. The milk storage housing 2 has a milk storage chamber 21. A liquid level sensor 4 for detecting the level of milk is installed on the main unit housing 1 near the milk storage chamber 21. A waterproof sealing structure 3 is installed between the main unit housing 1 and the liquid level sensor 4. The mounting surface of the waterproof sealing structure 3 elastically presses against the surface of the liquid level sensor 4 and / or the surface of the main unit housing 1. The liquid level sensor 4 passes through the waterproof sealing structure 3 and is electrically connected to the main unit.

[0026] Specifically, in this embodiment, the main unit housing 1 is the outer shell structure of the breast pump for mounting the main unit. The main unit housing 1 is equipped with a breast suction shield for adhering to the user's breast skin. The main unit includes an air pump for performing suction, a main unit circuit board for controlling suction, an air passage structure for connecting the air pump to the breast suction shield, and a solenoid valve for controlling the on / off state of the air passage. The solenoid valve is installed in the air passage structure connecting the air pump to the breast suction shield. The milk storage housing 2 is a milk storage container independently mounted on the main unit housing 1 for the breast pump (which can be connected by one of the following detachable methods: plug-in, screw-in, snap-on, or snap-fit). The milk storage chamber 21 inside the milk storage housing 2 is a storage structure that can connect to the breast suction shield of the main unit housing 1 and is used to store milk. To avoid user... If the milk is not stopped in time when the milk storage chamber 21 is full, milk will overflow. This application installs a liquid level sensor 4 near the milk storage chamber 21 on the main unit housing 1 to detect the position of the milk level. The rise of the milk storage water level triggers the liquid level sensor 4 to stop the main unit, allowing the user to remove the milk in time. In addition, in order to solve the problem of leakage caused by traditional sensor installation structure, the liquid level sensor 4 is installed on the main unit housing 1 through a waterproof sealing structure 3. The waterproof sealing structure 3 preferably uses a soft elastic material to seal the installation of the liquid level sensor 4, so that the installation surface can elastically press against the liquid level sensor 4 and the main unit housing 1, so that liquid cannot seep into the sealing position, achieving the effect of waterproof sealing.

[0027] When in use, the user starts the main unit. The air pump uses the air passage structure to create negative pressure suction in the sealed space formed by the breast shield adhering to the user's breast skin. Under the negative pressure, the milk flows through the main unit housing 1 into the milk storage chamber 21. The milk is stored in the milk storage chamber 21 and accumulates from the bottom of the milk storage chamber 21. The level of the accumulated milk gradually rises. The level sensor 4 continuously transmits the real-time detection results to the main unit circuit board. When the level of the milk rises to near the level sensor 4 above the milk storage chamber 21, the main unit circuit board compares the detection result of the level sensor with a preset value (which can be set to the maximum limit value of the bottle or close to the maximum limit value of the bottle). When the detection result is greater than the preset value, it is determined that milk overflow has occurred or is about to occur. The main unit circuit board controls the air pump to stop or controls the solenoid valve to disconnect the air passage, so as to stop the milk suction before the milk overflow occurs.

[0028] Optionally, as a preferred embodiment, the liquid level sensor 4 is a capacitive liquid level sensor or a capacitive liquid level sensing element. Specifically, in this embodiment, the capacitive liquid level sensor is a variable dielectric capacitor that utilizes the change in capacitance caused by the change in the surface of the measured medium. The capacitance formed by the liquid medium between the positive and negative electrodes changes linearly with the liquid level. The change in capacitance (i.e., the change in liquid level) is converted into a standard electrical signal output. More specifically, the position of the milk level inside the milk storage chamber 21 will rise and move as the collection time increases. When the milk level reaches the milk inlet, further milk storage will cause overflow. The capacitive liquid level sensor continuously transmits the real-time detection results to the host circuit board. The circuit board compares the detection result of the capacitive liquid level sensor with a preset value (which can be set to the maximum limit value of the bottle or close to the maximum limit value of the bottle). When the detection result is greater than the preset value, it determines that overflow has occurred or is about to occur, and can indicate that the bottle is full. It has the advantages of large dynamic range, fast response speed, small zero drift, simple structure, and strong adaptability. In particular, since the capacitive liquid level sensor can detect the change of milk level inside the milk storage chamber 21 through the thin-walled shell structure, it can trigger the stop of the main unit without opening the milk storage space or touching the milk level, ensuring the sealing of the milk storage space and preventing milk leakage or contamination. It is suitable for detecting the milk level in breast pumps.

[0029] Alternatively, as another embodiment, such as Figure 9 The breast pump shown has a liquid level detection device. The milk storage shell 2 can be an integrally formed milk storage structure on the main body shell 1. The main body and the milk storage chamber 21 are separated by a partition structure 14. The milk storage shell 2 is detachably equipped with a milk storage front cover 23 for easy opening and milk retrieval from the front of the milk storage chamber 21. The main body shell is detachably equipped with a main body rear cover 13 for easy opening and maintenance from the rear. The liquid level sensor 4 is installed on the partition structure 14 and faces the milk storage chamber 21 for detection.

[0030] Example 2: Based on Example 1, as follows Figures 1 to 8 The breast pump shown has a liquid level detection device. The liquid level sensor is located at the top near the milk storage chamber, and the wall thickness of the milk storage shell on the side near the liquid level sensor is less than the maximum detection distance of the liquid level sensor.

[0031] Specifically, in this embodiment, since the milk accumulates from the bottom of the milk storage chamber 21 due to the influence of natural gravity, the liquid level sensor 4 is preferably located at the top near the milk storage chamber 21. However, in order to ensure that the liquid level sensor 4 can be successfully triggered, the liquid level sensor 4 is preferably a sensor type whose detection range can penetrate the wall thickness and body of the milk storage shell 2. The wall thickness of the milk storage shell 2 on the side near the liquid level sensor 4 is preferably less than the maximum detection distance of the liquid level sensor 4, so that the milk can always successfully trigger the liquid level sensor 4 and stop the operation of the host when it is about to be full.

[0032] Example 3: Based on Example 1 or Example 2, such as Figures 1 to 8 The breast pump shown has a liquid level detection device. The main body housing 1 has a sensor assembly hole 11 for mounting a liquid level sensor 4. The waterproof sealing structure 3 includes a soft mounting buckle 31 for sealing the mounting of the liquid level sensor 4. The soft mounting buckle 31 is installed in the sensor assembly hole 11, so that the detection end of the liquid level sensor 4 faces the milk storage chamber 21.

[0033] Specifically, in this embodiment, the sensor assembly opening 11 is located on the main housing 1 near the milk storage chamber 21. The detection end of the liquid level sensor 4 faces the milk storage chamber 21 and is installed in the sensor assembly opening 11, so that the sensor data transmission cable can extend into the main housing 1 and be electrically connected to the control circuit. The soft assembly buckle 31 is a waterproof sealing structure 3 mainly used to seal the installation of the liquid level sensor 4. The soft assembly buckle 31 has a hollow through structure for installing the liquid level sensor 4. The soft assembly buckle 31 is preferably made of a soft elastic material such as silicone, rubber, or plastic. During assembly, the liquid level sensor 4 is first installed in the soft assembly buckle 31, so that the detection end of the liquid level sensor 4 faces the milk storage chamber 21. Then, the soft assembly buckle 31 is installed in the sensor assembly opening 11 to achieve a sealing effect on the sensor assembly opening 11 and the installation gap of the liquid level sensor 4.

[0034] Example 4: Based on Example 3, such as Figures 6 to 8 The breast pump shown has a liquid level detection device. In this embodiment, the sealing installation structure is an integrally formed protruding edge structure on the main body housing 1. The outer side of the soft assembly buckle 31 is provided with an assembly outer groove 311 for easy positioning installation. The sensing assembly opening 11 has a protruding limiting edge 12 for engaging the assembly outer groove 311. The protruding limiting edge 12 protrudes towards the inside of the main body housing 1.

[0035] Specifically, in this embodiment, the protruding limiting edge 12 is an integrally formed edge structure on the sensing assembly opening 11 and extends from the sensing assembly opening 11 toward the interior of the main housing 1. The outer surface of the soft assembly buckle 31 is provided with an assembly outer groove 311 that facilitates installation on the protruding limiting edge 12. The assembly outer groove 311 is circumferentially opened around the outer side of the soft assembly buckle 31. After installation, the protruding limiting edge 12 can restrict the axial installation position of the soft assembly buckle 31.

[0036] Furthermore, as another preferred embodiment of Example 4, such as Figures 1 to 5 The breast pump shown has a liquid level detection device. The inner side of the soft mounting buckle 31 is provided with an inner mounting groove 312 for easy sealing installation. The liquid level sensor 4 is fastened in the inner mounting groove 312 so that the detection end of the liquid level sensor 4 does not protrude from the surface of the main body housing 1.

[0037] Specifically, in this embodiment, the soft assembly buckle 31 has an inner assembly groove 312 in its hollow through-structure for easy sealing and installation. The liquid level sensor 4 extends into the soft assembly buckle 31 and is fastened in the inner assembly groove 312 to achieve the positioning for installation. The soft assembly buckle 31 is then installed on the main housing 1, so that the detection end of the liquid level sensor 4 does not protrude from the surface of the main housing 1, thus avoiding the soft assembly buckle 31 or the liquid level sensor 4 protruding from the surface of the main housing 1 and affecting the detection or installation of the milk storage container.

[0038] Example 5: Based on Example 3, unlike Example 4, this example uses a detachable bracket structure connected inside the main unit housing 1 for sealing and mounting. Figures 1 to 5 The breast pump shown has a liquid level detection device. The soft assembly buckle 31 is installed in the sensor assembly opening 11 through the sensor assembly bracket 32. The sensor assembly bracket 32 ​​is fastened to the assembly outer groove 311 of the soft assembly buckle 31 to limit the axial movement of the liquid level sensor 4. The sensor assembly bracket 32 ​​is located inside the main housing 1.

[0039] Specifically, in this embodiment, the sensor mounting bracket 32 ​​is a bracket structure that is detachably connected inside the main housing 1. The inner side of the main housing 1 is provided with mounting posts for mounting the sensor mounting bracket 32. Preferably, screws are used to lock the sensor mounting bracket 32 ​​into the post holes of the mounting posts. During assembly, the sensor mounting bracket 32 ​​is fastened into the outer mounting groove 311 of the soft mounting buckle 31 to restrict the axial installation position of the liquid level sensor 4. The sensor mounting bracket 32 ​​is then locked inside the main housing 1 by screws to achieve sealed installation of the liquid level sensor 4.

[0040] Example 6: Based on Example 3, such as Figures 1 to 8The breast pump shown has a liquid level detection device. A soft mounting buckle 31 extends in the direction away from the sensing mounting hole 11 to form a mounting handle 33 for easy assembly and disassembly. The soft mounting buckle 31 is made of silicone material.

[0041] Specifically, in this embodiment, the assembly handle 33 is an assembly handle structure that facilitates the installation or removal of the soft assembly buckle 31 by the assembly personnel. The assembly handle 33 extends from the side of the soft assembly buckle 31 away from the sensor assembly opening 11 and extends in a direction away from the sensor assembly opening 11. In order to further reduce the difficulty of installing or removing the soft assembly buckle 31 and to ensure the sealing effect, the soft assembly buckle 31 is preferably made of silicone material.

[0042] Example 7: Based on Example 1 or Example 2, such as Figure 8 The breast pump shown has a milk storage chamber 21 with a milk inlet for milk to flow in. The bottom of the main body housing 1 includes a left section a and a right section b located on the left and right sides of the milk inlet, respectively. At least two liquid level sensors 4 are respectively arranged in the range of the left section a and the right section b.

[0043] Specifically, in this embodiment, the breast pump uses at least two liquid level sensors 4, which are respectively arranged at different positions on the bottom of the main body housing 1 to detect the liquid level in the milk storage chamber 21. More specifically, the bottom of the main body housing 1 is divided into left bottom section a and right bottom section b on the left and right sides of the bottom of the housing. The milk inlet is located between the left bottom section a and the right bottom section b. By setting the liquid level sensors 4 separately, it is possible to reliably detect when the water level inside the milk storage chamber 21 is close to the milk inlet and about to overflow. By distributing them at multiple points, the possibility of trigger blind spots or detection errors caused by a single liquid level sensor 4, which may prevent the main body from stopping smoothly, is reduced, thereby reliably triggering and stopping the operation of the main body.

[0044] Example 8: Based on Example 1 or Example 2, such as Figures 1 to 8 The breast pump shown has a liquid level detection device. The top of the milk storage chamber 21 adopts an arc-shaped curved surface structure. The middle position of the arc-shaped curved surface structure is higher than the outer edge position, or the middle position of the arc-shaped curved surface structure is lower than the outer edge position. The detection end of the liquid level sensor 4 is located between the middle position and the outer edge position of the arc-shaped curved surface structure.

[0045] Specifically, in this embodiment, the arc-shaped curved surface structure is beneficial for the milk storage chamber 21 to fit the bottom shape of the main unit housing. When the arc-shaped curved surface structure adopts a curved surface shape with the middle position higher than the outer edge position, the milk inlet is set in the middle position of the arc-shaped curved surface structure. When the arc-shaped curved surface structure adopts a curved surface shape with the middle position lower than the outer edge position, the milk inlet is set in the outer edge position of the arc-shaped curved surface structure (not shown). This is beneficial for reducing the amount of milk residue left in the cavity when the milk is taken out. The detection end of the liquid level sensor 4 is located between the middle position and the outer edge position of the arc-shaped curved surface structure, which can adapt to the above two curved surface shapes at the same time, so that the liquid level sensor 4 can always be stably triggered by the rising milk level.

[0046] Example 9: Based on Example 1, a breast pump capable of liquid level detection and alarm reminder also includes an alarm reminder module electrically connected to the main unit. When the liquid level sensor 4 detects that the milk level has risen to a preset position, the alarm reminder module issues an alarm message and stops the breast pump from pumping milk.

[0047] Specifically, in this embodiment, the liquid level sensor 4 is preferably a capacitive liquid level sensor. The position of the milk level inside the milk storage chamber 21 will rise and move as the collection time increases. The capacitive liquid level sensor continuously detects the liquid level inside the milk storage chamber 21. When the milk level reaches the milk inlet, continuing to store milk will cause overflow. The capacitive liquid level sensor continuously transmits the detection results to the host circuit board. The host circuit board compares the detection results of the liquid level sensor 4 with the preset value (which can be set to the maximum limit value of the milk storage container or close to the maximum limit value of the milk storage container). When the detection result is greater than the preset value, it is determined that overflow has occurred or is about to occur, and the alarm reminder module can be used to indicate that the milk is full.

[0048] Specifically, in this embodiment, the breast pump also includes an alarm reminder module (not shown). The alarm reminder module is electrically connected to the main circuit board. When the main circuit board determines that milk has overflowed or is about to overflow, it sends a signal to the alarm reminder module. The alarm reminder module issues an alarm message. The alarm message can remind the user in any way, such as voice broadcast, screen prompt, light flashing or strong vibration, so that the full milk can be taken out in time.

[0049] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A breast pump with a liquid level detection device, comprising a main unit, a main unit housing (1), and a milk storage housing (2), wherein the main unit is disposed within the main unit housing (1), and the milk storage housing (2) has a milk storage chamber (21), characterized in that: The main housing (1) is equipped with a liquid level sensor (4) for detecting the position of the milk liquid level at a position close to the milk storage chamber (21). A waterproof sealing structure (3) is installed between the main housing (1) and the liquid level sensor (4). The mounting surface of the waterproof sealing structure (3) is elastically pressed against the surface of the liquid level sensor (4) and / or the surface of the main housing (1). The liquid level sensor (4) passes through the waterproof sealing structure (3) and is electrically connected to the main unit.

2. A breast pump with a liquid level detection device according to claim 1, characterized in that: The liquid level sensor (4) is located at the top of the milk storage chamber (21), and the wall thickness of the milk storage shell (2) on the side near the liquid level sensor (4) is less than the maximum detection distance of the liquid level sensor (4).

3. A breast pump with a liquid level detection device according to claim 1, characterized in that: The main housing (1) has a sensor assembly opening (11) for mounting the liquid level sensor (4). The waterproof sealing structure (3) includes a soft mounting buckle (31) for sealing the mounting of the liquid level sensor (4). The soft mounting buckle (31) is installed in the sensor assembly opening (11) so that the detection end of the liquid level sensor (4) faces the milk storage chamber (21).

4. A breast pump with a liquid level detection device according to claim 3, characterized in that: The soft assembly buckle (31) has an assembly outer groove (311) on its outer side for easy positioning and installation. The sensing assembly opening (11) has a raised limiting edge (12) for engaging the assembly outer groove (311). The raised limiting edge (12) protrudes toward the inside of the main housing (1).

5. A breast pump with a liquid level detection device according to claim 4, characterized in that: The inner side of the soft assembly buckle (31) is provided with an assembly inner slot (312) for easy sealing installation. The liquid level sensor (4) is fastened to the assembly inner slot (312) so that the detection end of the liquid level sensor (4) does not protrude from the surface of the main housing (1).

6. A breast pump with a liquid level detection device according to claim 3, characterized in that: The soft assembly buckle (31) is installed in the sensor assembly opening (11) through the sensor assembly bracket (32). The sensor assembly bracket (32) is fastened to the assembly outer slot (311) of the soft assembly buckle (31) to limit the axial movement of the liquid level sensor (4). The sensor assembly bracket (32) is located inside the main housing (1).

7. A breast pump with a liquid level detection device according to claim 5, characterized in that: The soft assembly buckle (31) extends in a direction away from the sensor assembly opening (11) to form an assembly handle (33) for easy assembly and disassembly. The soft assembly buckle (31) is made of silicone material.

8. A breast pump with a liquid level detection device according to claim 1, characterized in that: The milk storage chamber (21) has a milk inlet for milk to flow in. The bottom of the main unit housing (1) includes a left section a and a right section b located on the left and right sides of the milk inlet, respectively. At least two liquid level sensors (4) are respectively arranged within the range of the left section a and the right section b.

9. A breast pump with a liquid level detection device according to any one of claims 1-8, characterized in that: The liquid level sensor (4) is a capacitive liquid level sensor or a capacitive liquid level sensing element.

10. A breast pump with a liquid level detection device according to any one of claims 1-8, characterized in that: It also includes an alarm reminder module that is electrically connected to the host. When the liquid level sensor (4) detects that the milk level has risen to a preset position, the alarm reminder module issues an alarm message and stops the breast pump from pumping milk.

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