A foam shield generator with liquid level detection function

Abstract

This invention provides a foam shield generating device with liquid level detection function, comprising a liquid storage chamber for storing soap, a second probe, a third probe, and a first probe disposed within the liquid storage chamber, an indicator device, and a circuit board. The probes detect the soap level, and combined with circuit control, provide low-liquid and full-liquid alerts. This invention can monitor the remaining soap level in real time, improving the user experience and avoiding problems caused by insufficient or excessive liquid addition. It also features a safe and reliable dispensing design, making it suitable for smart toilets and other scenarios requiring liquid level monitoring.

Description

Technical Field

[0001] This utility model relates to a foam shield generating device with liquid level detection function. Background Technology

[0002] With the popularization of smart home devices, smart toilets, as an important part of modern homes, are seeing their functions continuously improved and stabilized. However, current smart toilets on the market still have many shortcomings in the practical application of their foam shield function, especially in terms of user experience. Most products lack real-time monitoring and feedback mechanisms for the remaining soap level, preventing users from promptly understanding the liquid level in the reservoir. This can lead to insufficient soap and impaired normal operation. Furthermore, during the refilling process, users often struggle to accurately determine when to fill, easily causing overflow or underfilling, further reducing convenience and satisfaction. In actual use, especially during maintenance or repair, residual foam liquid can easily flow back from the filling port, increasing operational complexity and potentially causing leakage and environmental pollution, significantly reducing the overall user experience. While some existing technologies attempt to seal the filling port through simple mechanical structures, these solutions often suffer from insufficient sealing performance, cumbersome operation, and ineffective backflow prevention, failing to meet users' needs for efficient and convenient operation. Summary of the Invention

[0003] This invention addresses the technical problems of existing smart toilet foam shield functions, such as the inability to monitor the remaining soap liquid in real time and the inability to remind users to add soap or when the toilet is full. It proposes a foam shield generating device with a liquid level detection function.

[0004] This utility model adopts the following solution: a foam shield generating device with liquid level detection function, characterized in that it includes a liquid storage chamber for storing soap solution, and a liquid outlet is arranged on the side wall of the liquid storage chamber, the liquid outlet being located above the bottom of the liquid storage chamber; it also includes a second probe and a third probe that can be placed in the liquid storage chamber, the second probe being able to contact and cooperate with the soap solution located below the liquid outlet, and the third probe being able to contact and cooperate with the soap solution located above the liquid outlet; it also includes a prompting device, when the soap solution level in the liquid storage chamber is between the second probe and the third probe, the second probe and the third probe are disconnected and not conductive, the prompting device being able to remind the user to add soap solution.

[0005] In this embodiment of the invention, a first probe is also included, which can contact and engage with the soap solution located at the uppermost end of the storage chamber; when the soap solution in the storage chamber contacts and engages with the first probe, the first probe and the second probe are connected through the soap solution, and the prompting device can remind the user that the soap solution is full.

[0006] In this embodiment of the invention, a circuit board is also included. The circuit board is electrically connected to the second probe, the third probe, the prompting device, and the first probe. When the second probe and the third probe are disconnected and not conducting, the circuit board can control the prompting device to remind the user to add soap. When the first probe and the second probe are connected, the circuit board can control the prompting device to remind the user that the soap solution is full.

[0007] In this embodiment of the utility model, a top cover is provided above the liquid storage chamber, and a liquid addition tube is provided on the top cover. Soap solution can be added into the liquid storage chamber through the liquid addition tube. It also includes a liquid addition device to prevent backflow. The liquid outlet of the liquid addition device can be connected to the inlet of the liquid addition tube.

[0008] In this embodiment of the invention, the liquid adding device includes a housing and a main body containing a liquid adding box. The main body is provided with a liquid adding port and is configured to move relative to the housing to expose or conceal the liquid adding port. The main body is provided with a first pipe that communicates with the liquid adding port. The housing is provided with a second pipe and a liquid dispensing pipe, with a liquid dispensing port between the second pipe and the liquid dispensing pipe. The first pipe can be inserted into the second pipe. When the liquid adding port is exposed for adding liquid, the liquid dispensing port is open, allowing soap solution to flow in from the first pipe and out from the liquid dispensing pipe. When the liquid adding port is concealed, the liquid dispensing port is closed, and the liquid dispensing pipe is not connected to the first pipe.

[0009] In this embodiment of the present invention, a first sealing ring and a second sealing ring are disposed between the outer periphery of the first pipe and the inner periphery of the second pipe. When the first sealing ring and the second sealing ring are located on the same side of the liquid outlet, the liquid outlet is open; when the first sealing ring and the second sealing ring are located on both sides of the liquid outlet, the liquid outlet is closed. The liquid outlet is disposed in the middle of the axial direction of the second pipe. The first pipe can be inserted from the opening at one end of the second pipe and move along the axial direction. The first sealing ring can prevent soap solution from leaking out from the gap between the two pipes.

[0010] In this embodiment of the present invention, a baffle is provided at the other end of the second pipe so that the soap solution can only flow from the outlet to the outlet pipe after it flows in from the first pipe; the first sealing ring is always located on the side of the outlet near the opening of the second pipe; when the outlet is open, the second sealing ring is also located on the side of the outlet near the opening of the second pipe, and when the outlet is closed, the second sealing ring is located on the side of the outlet near the baffle.

[0011] In this embodiment of the present invention, the main body is further configured with a transition cavity that can be connected to the first pipe. The bottom of the transition cavity is provided with an inclined surface, which can guide the soap solution in the transition cavity to the first pipe. A liquid inlet is provided at the top of the transition cavity. A silicone block is provided at the opening at the top of the transition cavity, and a liquid inlet is provided in the middle of the silicone block. The invention also includes a funnel, the lower end of which is inserted into the liquid inlet and extends into the transition cavity.

[0012] In this embodiment of the invention, a motor is also included, which can drive the main body to move relative to the outer shell, thereby realizing the opening or closing of the liquid outlet.

[0013] In this embodiment of the utility model, the motor is mounted on the housing, a gear is mounted on the output shaft of the motor, and a rack is mounted on the main body. The gear can cooperate with the rack to drive the main body to move relative to the housing.

[0014] This utility model provides a foam shield generator with a liquid level detection function, which has the following beneficial effects: 1. Through the cooperation of the second and third probes, real-time detection of the soap liquid level in the storage chamber is achieved. When the liquid level drops to between the second and third probes, the device prompts the user to add liquid, avoiding the foam shield function from malfunctioning due to insufficient soap liquid. 2. The design of the first probe enables the detection of the full liquid state and reminds the user to stop adding liquid when it is full, avoiding waste and overflow. 3. Through the logic control of the circuit board and the intelligent reminder function of the device, the user experience is improved, and the anxiety caused by the inability to know the remaining soap liquid is resolved during use. 4. The automatic opening and closing of the dispensing port is achieved through motor drive, improving user convenience. The double-sealing ring design effectively prevents soap liquid backflow, enhancing the safety and reliability of the device. The compact overall structure and high component integration reduce production costs. It has a wide range of applications, suitable not only for high-end models but also for ordinary light intelligent models, meeting market demands. The transition chamber design, using a sloping flow guide, ensures that the soap liquid smoothly enters the first pipe, avoiding waste or contamination caused by residual liquid. The funnel design of this invention not only facilitates quick dispensing but also reduces liquid spillage due to improper operation. The design of the lower end of the funnel extending into the transition chamber allows the soap liquid to flow directly into the bottom of the transition chamber, avoiding inconvenience caused by liquid stagnation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the liquid storage cavity in an embodiment of this utility model.

[0017] Figure 2 This is an exploded view of the liquid storage cavity in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the liquid adding device in the liquid adding state in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the liquid adding device in the non-liquid adding state according to an embodiment of this utility model.

[0020] Figure 5 This is an exploded view of the liquid addition device according to an embodiment of this utility model.

[0021] Figure 6 This is a cross-sectional view of the liquid adding device in the liquid adding state according to an embodiment of this utility model. Figure 1 .

[0022] Figure 7 This is a cross-sectional view of the liquid adding device in the liquid adding state according to an embodiment of this utility model. Figure 2 .

[0023] Figure 8 This is a cross-sectional view of an embodiment of the present invention with the liquid outlet in a closed state.

[0024] Figure 9 This is a schematic diagram of the gear and rack in this utility model.

[0025] Figure 10 This is a schematic diagram of the motor being configured on top of the outer casing in this utility model. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0027] Reference manual attached Figure 1 , Figure 2The main structure of the device includes a liquid storage chamber 17, a liquid outlet 18, a second probe 19, a third probe 20, a first probe 21, a notification device (not shown in the figure), a circuit board (which can be a PCB circuit board, mainly a control module, not shown in the figure), a top cover 22, a liquid filling tube 23, and a liquid filling device to prevent backflow. The notification device can be implemented as an audible and visual alarm, a display screen, or other form of reminder device, and its signal output is controlled by the circuit board according to the conduction status of the probes. The liquid storage chamber 17 is the core component of the device, used to store soap solution. A liquid outlet 18 is provided on its side wall, located above the bottom of the liquid storage chamber, ensuring that the soap solution can flow out smoothly and generate foam, while preventing the soap solution in the storage chamber from being completely drained, ensuring that the second probe is always in contact with the soap solution. The second probe 19 is installed at the lowest position of the liquid storage chamber 17, below the liquid outlet 18, serving as a common probe used to detect whether soap solution is present in the liquid storage chamber. The third probe 20 is located inside the storage chamber 17, slightly above the outlet 18, and is used to detect whether the soap solution level has reached a certain height. When the soap solution level in the storage chamber drops to between the second probe 19 and the third probe 20, the two probes disconnect and are no longer conductive. At this time, the circuit board controls the prompting device to send a signal to remind the user to add soap. The prompting device can be an audible and visual alarm or other form of reminder device, which is electrically connected to the circuit board to receive control signals. The three probes are metal probes used to establish electrical connection when in contact with the soap solution.

[0028] Furthermore, the first probe 21 is installed at the top of the liquid storage chamber 17 to detect whether the soap solution is full. When the soap solution level in the storage chamber rises to contact the first probe 21, the first probe 21 and the second probe 19 are connected through the soap solution. At this time, the circuit board controls the prompting device to remind the user that the soap solution is full. The design of the first probe 21 enables the device to automatically determine whether the liquid level has reached the upper limit during the liquid filling process, thereby avoiding overflow due to overfilling. The circuit board has a built-in logic control module that determines whether the liquid level is in the filling range or full by detecting the continuity between the probes, and controls the prompting device to issue a corresponding reminder signal accordingly. The circuit board is electrically connected to the second probe 19, the third probe 20, the prompting device, and the first probe 21, realizing accurate judgment of the liquid level status and intelligent reminder.

[0029] A cover 22 is mounted above the storage chamber 17, and a filling pipe 23 is installed on the cover 22. Soap solution can be added to the storage chamber 17 through the filling pipe 23. The outlet of the filling device is connected to the inlet of the filling pipe 23 and is designed to prevent backflow. It can be connected via a connecting pipe to ensure the safety and reliability of the filling process. The backflow prevention function is achieved through a one-way valve or similar structure to ensure that soap solution does not flow back from the filling pipe 23 during the filling process.

[0030] The specific operating principle is as follows: When the soap solution level in the storage chamber 17 drops to between the second probe 19 and the third probe 20, the soap solution cannot simultaneously contact both probes, resulting in a disconnect and no electrical connection. Upon detecting this state, the circuit board immediately controls the prompting device to send a signal to remind the user to add soap. The prompting device can be an audible and visual alarm, alerting the user through sound or light signals. When the user adds soap solution to the storage chamber 17 through the adding tube 23, as the liquid level gradually rises, the soap solution first contacts the second probe 19, then the third probe 20, and finally reaches the first probe 21. When the soap solution level rises to contact the first probe 21, the first probe 21 and the second probe 19 become electrically connected through the soap solution. Upon detecting this state, the circuit board controls the prompting device to remind the user that the soap solution is full. At this point, the user should stop adding soap to avoid overflow due to overfilling.

[0031] To ensure the stability and reliability of the device, the second probe 19, the third probe 20, and the first probe 21 are all made of corrosion-resistant and electrically conductive materials, such as stainless steel or nickel-plated copper. These materials are adaptable to different types of soap solutions, extending the probe's lifespan. The specific implementation of the alerting device can be an audible and visual alarm, a display screen, or other forms of reminder device, with its signal output controlled by the circuit board based on the probe's conductivity status. The circuit board has a built-in logic control module that detects the conductivity status between the probes to determine whether the liquid level is in the filling range or at full capacity, and accordingly controls the alerting device to issue a corresponding reminder signal. The circuit board is designed with low-power technology, enabling it to maintain stable performance during long-term operation.

[0032] A filter screen is installed at the inlet of the liquid addition tube 23 to filter impurities in the soap solution and prevent the probe surface from being contaminated, which would affect the conductivity.

[0033] In practical applications, the device of this invention is suitable for the foam shield function of smart toilets. When a user uses the smart toilet, the device uses the cooperation of the second probe 19 and the third probe 20 to detect the remaining amount of soap in the storage chamber 17 in real time. When the liquid level drops to between the second probe 19 and the third probe 20, the device sends a signal to remind the user to add soap, preventing the foam shield function from malfunctioning due to insufficient soap. When the user adds soap to the storage chamber 17 through the adding tube 23, as the liquid level gradually rises, the device uses the first probe 21 to detect whether the liquid level has reached the upper limit, and reminds the user to stop adding soap when it is full, avoiding waste and overflow. Through the logic control of the circuit board and the intelligent reminder function of the device, users can promptly understand the remaining soap level, solving the anxiety caused by not knowing the remaining soap level during use.

[0034] In addition, please refer to the attached instruction manual. Figures 3-10The liquid adding device of this utility model mainly includes a shell 1, a liquid adding box body 2, a first pipe 4, a second pipe 5, a liquid outlet pipe 6, a sealing ring structure, and a motor drive system, among other core components. These components work together to complete the functions of adding soap solution, guiding flow, and preventing backflow. The liquid outlet pipe is the liquid outlet end of the liquid adding device and is connected to the liquid adding pipe.

[0035] First, the overall structure and working principle of this device are described. The outer casing 1 serves as the external support structure for the entire device, housing the main body 2 and other core components. A drawer-like structure can be formed between the main body and the outer casing, allowing the main body to be pulled out relative to the outer casing (either retractable or electrically). The main body 2 is equipped with a liquid inlet 3, which can be exposed or concealed by the movement of the main body 2 relative to the outer casing 1. When exposed, liquid can be added. This design ensures that the liquid inlet 3 can be concealed when not in use, preventing the entry of external contaminants and improving the overall aesthetics and safety of the device. The main body 2 is also equipped with a first pipe 4, used to guide soap solution from the liquid inlet 3 into the subsequent flow path. The outer casing 1 contains a second pipe 5 and an outlet pipe 6, with an outlet 7 between the second pipe 5 and the outlet pipe 6 to control the outflow of soap solution. The first pipe 4 and the second pipe 5 are connected by a plug-in joint, maintaining communication between them.

[0036] To ensure a tight seal between the first pipe 4 and the second pipe 5, two sealing rings, namely the first sealing ring 8 and the second sealing ring 9, are installed between the outer circumference of the first pipe and the inner circumference of the second pipe. The positions of these two sealing rings determine the open or closed state of the outlet 7. When the first sealing ring 8 and the second sealing ring 9 are on the same side of the outlet 7, the outlet 7 is open, and soap solution can flow in from the first pipe 4 and flow out sequentially through the outlet 7 and the outlet pipe 6. When the first sealing ring 8 and the second sealing ring 9 are on opposite sides of the outlet 7, the outlet 7 is closed, and the outlet pipe is no longer connected to the second pipe 5, thus effectively preventing soap solution backflow. This double sealing ring design not only enhances the sealing performance of the device but also provides additional protection when the device is tilted or overturned, ensuring that soap solution will not flow back to the filling port 3 due to the inversion of the equipment or gravity.

[0037] Preferably, a baffle 17 is provided at the other end of the second pipe, so that the soap solution flowing in from the first pipe can only flow from the outlet to the outlet pipe, ensuring a single flow direction. The first sealing ring is always located on the side of the outlet near the opening of the second pipe; when the outlet is open, the second sealing ring is also located on the side of the outlet near the opening of the second pipe; when the outlet is closed, the second sealing ring is located on the side of the outlet near the baffle. That is to say, the second sealing ring moves back and forth on both sides of the outlet, thereby realizing the opening or closing of the outlet.

[0038] Furthermore, the main body 2 is internally configured with a transition cavity 10, the bottom of which is designed with a sloping surface 11. This sloping surface 11 design allows the soap solution to flow smoothly from the filling port 3 and be quickly guided into the first pipe 4, avoiding the influence of residual liquid on the device. A silicone block 12 covers the opening at the top of the transition cavity 10, with an opening in the center of the silicone block 12 forming the filling port 3. The silicone block 12 is made of a material with good flexibility and sealing properties, effectively preventing leakage of soap solution when not in use. In addition, the device includes a funnel 13, the lower end of which is inserted into the filling port 3 and extends into the transition cavity 10. When the user pours soap solution into the funnel 13, the liquid flows directly into the bottom of the transition cavity 10 and is guided into the first pipe 4 through the sloping surface 11. This design not only improves the efficiency of dispensing but also reduces liquid spillage due to improper operation.

[0039] The motor 14 is a crucial component of this device, responsible for driving the body 2 to move relative to the outer casing 1, thereby exposing or concealing the filling port 3 and opening or closing the outlet port 7. The motor 14 is mounted on the outer casing 1, with a gear 15 mounted on its output shaft, and a rack 16 mounted on the body 2. The gear 15 and rack 16 mesh together, and the rotation of the motor 14 drives the body 2 to move in a linear direction. When the motor 14 rotates forward, the body 2 moves outward, exposing the filling port 3, while the first pipe 4 and the second pipe 5 are extended, opening the outlet port 7. When the motor 14 rotates in reverse, the body 2 moves inward, the first and second pipes retract, concealing the filling port 3 and closing the outlet port 7. This electric drive significantly improves user convenience and achieves automated control.

[0040] The specific operation process of this device is described in detail below. S1: When liquid needs to be added, the motor 14 is started. The motor 14 drives the main body 2 to move outward through the engagement of the gear 15 and rack 16, opening the outlet 7. S2: The user inserts the funnel 13 into the liquid inlet 3 and pours in the soap solution. The liquid is guided through the inclined surface 11 in the transition chamber 10 to the first pipe 4. S3: After flowing into the first pipe 4, the soap solution flows through the outlet 7 to the outlet pipe 6 and finally out, completing the liquid addition process. During this process, the first sealing ring 8 and the second sealing ring 9 are always located on the same side of the outlet 7, ensuring that the soap solution can flow out smoothly without leakage. After the liquid addition is completed, the motor 14 is started again to reverse its rotation, and the main body 2 moves inward, closing the outlet 7. At this time, the first sealing ring 8 and the second sealing ring 9 are located on both sides of the outlet 7, forming a barrier between the outlet and the second pipe, creating a sealed state and effectively preventing backflow of the soap solution.

[0041] In practical applications, this device can also handle various complex scenarios. For example, during maintenance or upkeep, if it is necessary to drain the residual liquid inside the device, simply moving the main body 2 to a concealed state ensures a complete seal between the liquid filling channel and the liquid outlet 7, preventing backflow even if the device is flipped over. Furthermore, since the position of the motor 14 can be flexibly adjusted according to actual needs, such as being positioned at the front, rear, or top, this device possesses a high degree of modularity, facilitating installation and maintenance.

[0042] In summary, this specific embodiment achieves automatic opening and closing of the liquid inlet through motor drive, simplifying the user's operation steps; the double sealing ring design improves the device's sealing performance, solving the problem of soap liquid backflow; the transition chamber and inclined surface structure optimize the flow path of the soap liquid, reducing waste of residual liquid; and the funnel design improves liquid dispensing efficiency and reduces the possibility of operational errors. The above technical solutions make this device compact, easy to operate, and highly reliable.

[0043] In summary, this invention, by configuring multiple probes within the liquid storage chamber 17 and utilizing the conductivity of the soap solution to detect the liquid level, combined with circuit control and a prompting device, achieves real-time monitoring and intelligent reminder functions for the soap solution level. The device design fully considers safety, reliability, and user experience, solving the technical problems of existing technologies that cannot monitor the remaining soap solution level in real time or remind users to add soap or when the solution is full. By optimizing the capacity design of the liquid storage chamber 17, the anti-backflow design of the adding device, and the logic control module of the circuit board, this invention provides a new solution for the technological development of related fields, possessing significant application value and promotional significance.

[0044] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A foam shield generating device with liquid level detection function, characterized in that, It includes a liquid storage chamber for storing soap liquid, and a liquid outlet is provided on the side wall of the liquid storage chamber, which is located above the bottom of the liquid storage chamber; It also includes a second probe and a third probe that can be placed in the liquid storage chamber. The second probe can contact and engage with the soap liquid located below the liquid outlet, and the third probe can contact and engage with the soap liquid located above the liquid outlet. It also includes a prompting device that, when the soap liquid level in the storage chamber is between the second and third probes, the second and third probes are disconnected and no longer conductive, thus reminding the user that liquid needs to be added.

2. The foam shield generating device with liquid level detection function according to claim 1, characterized in that, It also includes a first probe, which can contact and engage with the soap solution located at the top of the storage chamber; when the soap solution in the storage chamber contacts and engages with the first probe, the first probe and the second probe are connected through the soap solution, and the prompting device can remind the user that the soap solution is full.

3. A foam shield generating device with liquid level detection function according to claim 2, characterized in that, It also includes a circuit board that can be electrically connected to the second probe, the third probe, the prompting device, and the first probe; when the second probe and the third probe are disconnected and not conducting, the circuit board can control the prompting device to remind the user to add soap; when the first probe and the second probe are connected, the circuit board can control the prompting device to remind the user that the soap solution is full.

4. A foam shield generating device with liquid level detection function according to any one of claims 1-3, characterized in that, The liquid storage chamber is equipped with a top cover, and a liquid addition pipe is provided on the top cover. Soap solution can be added into the liquid storage chamber through the liquid addition pipe. The liquid addition device is also included to prevent backflow. The outlet end of the liquid addition device can be connected to the inlet of the liquid addition pipe.

5. A foam shield generating device with liquid level detection function according to claim 4, characterized in that, The liquid filling device includes a housing and a main body of a liquid filling box. The main body is provided with a liquid filling port. The main body is configured to move relative to the housing so as to expose or hide the liquid filling port. The main body is provided with a first pipe that can be connected to the liquid filling port; the outer shell is provided with a second pipe and a liquid outlet pipe, and a liquid outlet is provided between the second pipe and the liquid outlet pipe. The first pipe can be inserted and connected to the second pipe. When the filling port is exposed for adding liquid, the outlet is open, allowing the soap solution to flow in from the first pipe and then out from the outlet pipe; when the filling port is hidden, the outlet is closed, and the outlet pipe is not connected to the first pipe.

6. A foam shield generating device with liquid level detection function according to claim 5, characterized in that, A first sealing ring and a second sealing ring are disposed between the outer circumference of the first pipe and the inner circumference of the second pipe. When the first sealing ring and the second sealing ring are located on the same side of the liquid outlet, the liquid outlet is open; when the first sealing ring and the second sealing ring are located on both sides of the liquid outlet, the liquid outlet is closed. The liquid outlet is disposed in the middle of the axial direction of the second pipe. The first pipe can be inserted into the opening at one end of the second pipe and move along the axial direction. The first sealing ring can prevent soap solution from leaking out from the gap between the two pipes.

7. A foam shield generating device with liquid level detection function according to claim 6, characterized in that, The other end of the second pipe is equipped with a baffle so that the soap solution can only flow from the outlet to the outlet pipe after it flows in from the first pipe; the first sealing ring is always located on the side of the outlet near the opening of the second pipe; when the outlet is open, the second sealing ring is also located on the side of the outlet near the opening of the second pipe, and when the outlet is closed, the second sealing ring is located on the side of the outlet near the baffle.

8. A foam shield generating device with liquid level detection function according to claim 7, characterized in that, The main body is also equipped with a transition cavity that can be connected to the first pipe. The bottom of the transition cavity is provided with an inclined surface, which can guide the soap solution in the transition cavity to the first pipe. A liquid inlet can be provided at the top of the transition cavity. A silica gel block is provided at the opening at the top of the transition cavity, and a liquid inlet is provided in the middle of the silica gel block. It also includes a funnel, the lower end of which is inserted into the liquid inlet and extends into the transition cavity.

9. A foam shield generating device with liquid level detection function according to any one of claims 5-8, characterized in that, It also includes a motor that can drive the main body to move relative to the outer shell, thereby opening or closing the liquid outlet.

10. A foam shield generating device with liquid level detection function according to claim 9, characterized in that, The motor is mounted on the housing, and a gear is mounted on the output shaft of the motor. A rack is mounted on the main body, and the gear can engage with the rack to drive the main body to move relative to the housing.

Images