Foam shield generating device

Abstract

The invention relates to the technical field of intelligent closestools, in particular to a foam shield generating device which comprises a shell, a liquid storage cavity, a mixing cavity, a movable rod, a spring, a pipeline and the like. A liquid storage cavity and a mixing cavity are formed in the shell and communicated through a channel, a movable rod is arranged in the channel and can move between a first position and a second position, and fluid isolation and communication of the liquid storage cavity, the temporary storage space and the mixing cavity are achieved. The water inlet pipe introduces tap water to impact the water baffle at the lower end of the movable rod to drive the movable rod to move to complete liquid soap filling and mixing. An electronic liquid adding pump is replaced by tap water pressure, the manufacturing cost is remarkably reduced, the operation stability is improved, and the intelligent closestool is suitable for various intelligent closestool types and meets the market requirement.

Description

Technical Field

[0001] This invention relates to a foam shield generating device. Background Technology

[0002] With the widespread adoption of smart home devices, smart toilets, as a crucial component, are seeing their functions continuously improved and matured. The foam shield function, a key technology for enhancing user experience, was initially primarily applied to high-end smart toilet models. However, with increasing market competition, this function has gradually been introduced into mid-to-low-end, less sophisticated smart toilets, leading to rapid growth in market demand. Traditional foam shield devices typically rely on a dispensing pump to deliver and mix the foam solution. While this design meets basic functional requirements, it suffers from high cost, complex structure, and reduced reliability due to electronic component failures. In existing technologies, foam solution mixing is usually accomplished using a water pump or dispensing pump. This method not only increases manufacturing costs but also raises maintenance difficulty and the risk of malfunction due to the use of electronic components. Furthermore, traditional devices have limited control precision over the foam solution during mixing, easily resulting in foam waste or uneven mixing, negatively impacting the user experience. Summary of the Invention

[0003] This invention discloses a foam shield generator driven by tap water pressure. Through a clever design that integrates the storage chamber, mixing chamber, and movable rod, it utilizes water pressure to automatically extract and mix the foam liquid, completely eliminating the need for a traditional dispensing pump. This design not only significantly reduces production costs but also improves the reliability and lifespan of the device, while meeting the needs of different models. This technical solution achieves precise switching between the storage chamber and mixing chamber through the synergistic action of springs, sealing rings, and the movable rod, ensuring efficient mixing of the foam liquid and water, and solving the problems of high cost, poor reliability, and low mixing efficiency found in traditional devices.

[0004] The present invention adopts the following solution:

[0005] A foam shield generating device includes a housing with a vertically distributed liquid storage chamber and a mixing chamber inside. A channel is provided between the liquid storage chamber and the mixing chamber, allowing soap solution from the liquid storage chamber to flow into the mixing chamber. A water inlet pipe is also provided below the housing, connecting to the mixing chamber. The device also includes a movable rod that can be positioned within the channel, forming a temporary storage space. The movable rod can move vertically between a first position and a second position within the channel. When the movable rod is in the first position, the liquid storage chamber is disconnected from the temporary storage space, and the temporary storage space is connected to the mixing chamber. When water enters through the water inlet pipe, the water flow pushes the movable rod upward, causing it to be in the second position within the channel, where the temporary storage space is disconnected from the mixing chamber, and the temporary storage space is connected to the liquid storage chamber.

[0006] In this embodiment of the invention, the movable rod is provided with a first sealing ring and a second sealing ring distributed vertically. When the movable rod is in a first position within the channel, the first sealing ring can disconnect the liquid storage chamber from the temporary storage space; when the movable rod is in a second position within the channel, the second sealing ring can disconnect the mixing chamber from the temporary storage space.

[0007] In this embodiment of the invention, a spring is also included. When the water inlet pipe is not flowing with water, the spring can drive the movable rod to move downward and to a first position, so as to disconnect the liquid storage chamber from the temporary storage space.

[0008] In this embodiment of the invention, a pressure cap is also included. A first connecting tube located on the periphery of the channel is disposed inside the liquid storage cavity. The pressure cap can be fastened to the outer periphery of the first connecting tube. A spring is sleeved on the outer periphery of the movable rod. A flange is disposed on the periphery of the movable rod. One end of the spring can abut against the flange, and the other end of the spring can abut against the bottom of the pressure cap.

[0009] In this embodiment of the invention, a liquid outlet is provided on the side wall of the cap, and the soap solution in the storage chamber can flow to the temporary storage space through the liquid outlet; a first abutment part is provided on the outer periphery of the first connecting pipe, and a second abutment part is provided on the inner periphery of the cap, and the lower part of the first abutment part can abut against the upper part of the second abutment part to connect the pressure rod to the first connecting pipe.

[0010] In this embodiment of the invention, a slot is provided on the inner sidewall of the second abutment portion, and a snap-fit ​​block is also provided on the outer periphery of the first connecting tube. The rotation of the pressure cap relative to the first connecting tube enables the snap-fit ​​block to engage with the slot.

[0011] In this embodiment of the invention, a baffle plate is also provided at the lower end of the movable rod, and the water flow from the inlet pipe can impact the baffle plate to drive the movable rod to move upward; the baffle plate is located below the channel, and the diameter of the baffle plate is larger than the aperture of the channel.

[0012] In this embodiment of the invention, a second connecting pipe is disposed inside the mixing chamber and located on the periphery of the channel. The baffle plate can be located inside the second connecting pipe. The water inlet pipe can extend into the mixing chamber and be sleeved on the inner periphery of the second connecting pipe. A gap is formed between the inner periphery of the second connecting pipe and the outer periphery of the water inlet pipe. This gap can squeeze water and soap solution into the mixing chamber.

[0013] In this embodiment of the invention, a pipe is also provided inside the housing, the inlet of the pipe being connected to the mixing chamber, and the outlet of the pipe being connected to the mixing liquid outlet on the housing.

[0014] In this embodiment of the invention, the housing is further provided with a liquid inlet and an air inlet, which are connected to the liquid storage chamber.

[0015] The working principle of this invention can be broken down into the following steps: S1, Water inlet stage: Tap water enters through the inlet pipe, the water flow impacts the baffle plate on the movable rod, compressing the spring and causing the movable rod to move upward to the second position; at this time, the storage chamber is connected to the temporary storage space, the temporary storage space is filled with soap solution, and the temporary storage space is disconnected from the mixing chamber. S2, Mixing stage: As the movable rod moves upward, the soap solution in the storage chamber flows out through the channel; the tap water and soap solution are fully mixed on the outside of the channel, and finally flow out from the mixed solution outlet through the pipe. S3, Water shut-off stage: When the water inlet stops, the spring resets, pushing the movable rod downward to the first position; at this time, the storage chamber is disconnected from the temporary storage space, and the temporary storage space is connected to the mixing chamber; under the action of gravity, part of the soap solution in the temporary storage space flows into the mixing chamber, and the other part flows into the inlet pipe; the soap solution flowing into the inlet pipe re-enters the mixing chamber with the water flow during the next water inlet, ensuring continuous mixing effect.

[0016] The beneficial effects of this invention are as follows: By utilizing tap water pressure to drive the soap dispensing, the traditional electronic dispensing pump is eliminated, significantly reducing manufacturing costs, making it particularly suitable for mid-to-low-end smart toilet models. The purely mechanical structure design avoids the use of electronic components, reducing potential failure points and improving the stability and durability of the device. The device has a simple and compact structure, suitable for various smart toilet models, meeting the needs of different markets. Furthermore, the up-and-down movement of the movable rod and the design of the gap structure achieve efficient mixing of soap and tap water, ensuring excellent foam generation.

[0017] Furthermore, this invention improves the sealing performance and ease of assembly by optimizing the design of the sealing ring, spring, and gland. The sealing ring is made of corrosion-resistant rubber to ensure sealing performance during long-term use. The groove and snap-fit ​​design between the gland and the first connecting pipe simplifies the assembly process and enhances the structural robustness.

[0018] In particular, the design of the baffle plate and gap structure of the present invention has significant technical advantages. The diameter of the baffle plate is larger than the channel aperture, ensuring that the water flow can effectively impact the movable rod and drive it to move. Attached Figure Description

[0019] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0021] Figure 2This is a cross-sectional view of an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the movable rod in the first position in this invention.

[0023] Figure 4 This is a schematic diagram of the movable rod in the second position in this invention.

[0024] Figure 5 This is a schematic diagram of the housing in this invention.

[0025] Figure 6 This is a partially enlarged schematic diagram of the shell in this invention.

[0026] Figure 7 This is a schematic diagram of the pressure cap in this invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Referring to the accompanying drawings, a foam shield generating device includes core components such as a housing 1, a liquid storage chamber 2, a mixing chamber 3, a movable rod 5, a spring 9, and a pipe 17. The housing 1 is internally designed with the liquid storage chamber 2 and the mixing chamber 3 distributed vertically. The liquid storage chamber 2 stores soap solution, which is used to generate bubbles, while the mixing chamber 3 mixes the soap solution with tap water. The liquid storage chamber and the mixing chamber are separated by a partition 26. A water inlet pipe 15 is located at the bottom of the housing 1, connected to the mixing chamber 3, for introducing tap water. A channel 4 is provided between the liquid storage chamber 2 and the mixing chamber 3. The movable rod 5 is disposed within the channel 4, and can move vertically within the channel 4, switching between a first position and a second position. A temporary storage space 6 is formed between the movable rod 5 and the channel 4 for temporarily storing soap solution, achieving quantitative storage mechanically.

[0029] The working mechanism of the movable rod 5 is achieved through several key structures. When water enters through the inlet pipe 15, the water flow impacts the baffle plate 13 at the lower end of the movable rod 5, compressing the spring 9 and pushing the movable rod 5 upward to the second position. At this time, the liquid storage chamber 2 is connected to the temporary storage space 6, which is filled with soap solution. Simultaneously, the temporary storage space 6 is disconnected from the mixing chamber 3, preventing water from flowing upward into the liquid storage chamber. When water intake stops, the spring 9 resets (or resets under its own weight), pushing the movable rod 5 downward to the first position. At this time, the liquid storage chamber 2 is disconnected from the temporary storage space 6, and the temporary storage space 6 is connected to the mixing chamber 3. Under the action of gravity, part of the soap solution in the temporary storage space 6 flows into the mixing chamber 3, and the other part flows into the inlet pipe 15. The soap solution flowing into the water inlet pipe 15 enters the mixing chamber 3 with the water flow during the next water intake, thus achieving the mixing of soap solution and tap water. At the same time, due to the gap, most of the soap solution will flow directly into the water inlet pipe. Thus, the gap setting can increase the water pressure between the second connecting pipe and the water inlet pipe during the next water intake, which can fully mix the water and soap solution. Finally, it is squeezed into the mixing chamber through the gap for further mixing, resulting in a better bubble effect. Figure 3 Figure 4 In the diagram, the dashed line indicates the direction of soap liquid flow.

[0030] To ensure effective fluid isolation, the movable rod 5 is equipped with a first sealing ring 7 and a second sealing ring 8, positioned vertically. The first sealing ring 7 is located on the side of the movable rod 5 closest to the liquid storage chamber 2. When the movable rod 5 is in the first position, the first sealing ring 7 isolates the liquid storage chamber 2 from the temporary storage space 6. The second sealing ring 8 is located on the side of the movable rod 5 closest to the mixing chamber 3. When the movable rod 5 is in the second position, the second sealing ring 8 isolates the temporary storage space 6 from the mixing chamber 3. The sealing rings are made of corrosion-resistant rubber to ensure sealing performance during long-term use. The design of the first sealing ring 7 and the second sealing ring 8 not only improves the sealing performance of the device but also simplifies the assembly process.

[0031] Spring 9 is disposed on the outer periphery of movable rod 5, with one end abutting against flange 12 on movable rod 5 and the other end abutting against the bottom of pressure cap 10. Pressure cap 10 is fastened to the outer periphery of first connecting tube 11 on the periphery of channel 4, and spring 9 is fixed by pressure cap 10. Pressure cap 10 and first connecting tube 11 are fixedly connected by the cooperation of slot 21 and locking block 22. Specifically, locking block 22 is disposed on the outer periphery of first connecting tube 11, and slot 21 is disposed on the inner periphery of pressure cap 10. By rotating pressure cap 10, locking block 22 is inserted into slot 21, thereby achieving fixed connection between pressure cap 10 and first connecting tube 11. This design enhances the structural robustness and facilitates assembly and maintenance.

[0032] Preferably, the side wall of the cap is provided with a liquid outlet 23, through which the soap solution in the storage chamber can flow to the temporary storage space; a first abutment portion 24 is provided on the outer periphery of the first connecting tube, and a second abutment portion 25 is provided on the inner periphery of the cap. The lower part of the first abutment portion can abut against the upper part of the second abutment portion to connect the pressure rod to the first connecting tube, thus preventing the pressure rod from being pushed upward by the spring. A slot 21 is provided on the inner side wall of the second abutment portion, and a locking block 22 is also provided on the outer periphery of the first connecting tube. The rotation of the cap relative to the first connecting tube allows the locking block to engage with the slot, thus enabling the cap to rotate without significant external force and maintaining a stable connection between the cap and the first connecting tube.

[0033] A baffle plate 13 is installed at the lower end of the movable rod 5. The baffle plate 13 is located below the channel 4 and its diameter is larger than the orifice of the channel 4. This ensures that the water flow will not directly impact the channel and prevent water from flowing into the storage chamber. The baffle plate 13 can be impacted by the water flow from the inlet pipe 15, thereby pushing the movable rod 5 upward. The design of the baffle plate 13 ensures that the water flow can effectively impact the movable rod 5 and drive it to move. A second connecting pipe 14 is provided in the mixing chamber 3. The baffle plate 13 is located inside the second connecting pipe 14. The inlet pipe 15 extends into the mixing chamber 3 and is sleeved on the inner circumference of the second connecting pipe 14, forming a gap 16 between the two. The gap 16 can increase the pressure in the second connecting pipe and the inlet pipe, so that the soap solution can be fully mixed with the water flow. Then, high-pressure water is forced into the mixing chamber to mix again with the remaining soap solution.

[0034] The housing 1 is equipped with a pipe 17. The inlet of the pipe 17 is connected to the mixing chamber 3, and the outlet of the pipe 17 is connected to the mixed liquid outlet 18 on the housing 1, for outputting the mixed liquid. The housing 1 is also provided with a liquid inlet 19 and an air inlet 20, which are respectively connected to the liquid storage chamber 2, for replenishing soap solution and regulating the air pressure in the liquid storage chamber 2.

[0035] The specific operating principle of this device can be explained in three stages. S1, Water Inlet Stage: Tap water enters through the inlet pipe 15. The water flow impacts the baffle plate 13 on the movable rod 5, compressing the spring 9 and causing the movable rod 5 to move upwards to the second position. At this time, the storage chamber 2 is connected to the temporary storage space 6, which is filled with soap solution, while the temporary storage space 6 is disconnected from the mixing chamber 3. S2, Mixing Stage: As the movable rod 5 moves upwards, a measured amount of soap solution in the temporary storage space 6 flows out through the gap in the channel 4. After the tap water and soap solution are fully mixed, they flow out through the pipe 17 from the mixed solution outlet 18. S3, Water Stop Stage: When water inlet stops, the spring 9 resets, pushing the movable rod 5 downwards to the first position. At this time, the storage chamber 2 is disconnected from the temporary storage space 6, and the temporary storage space 6 is connected to the mixing chamber 3. Under the influence of gravity, a small portion of the soap solution in the temporary storage space 6 flows into the mixing chamber 3, while most flows into the inlet pipe 15. The soap solution flowing into the inlet pipe 15 is mixed during the next water inlet to ensure continuous mixing.

[0036] This invention significantly reduces manufacturing costs through optimized mechanical structure design. It abandons the traditional electronic dispensing pump and adopts a tap water pressure-driven soap dispensing method, making it particularly suitable for mid-to-low-end smart toilet models. The purely mechanical structure design avoids the use of electronic components, reducing potential failure points and improving the stability and durability of the device. The device has a simple and compact structure, suitable for various smart toilet models, meeting the needs of different markets. The up-and-down movement of the movable rod 5 and the design of the gap 16 structure achieve efficient mixing of soap and tap water, ensuring excellent foam generation.

[0037] Furthermore, this invention improves the sealing performance and ease of assembly by optimizing the design of the sealing ring, spring 9, and pressure cap 10. The sealing ring is made of corrosion-resistant rubber to ensure sealing performance during long-term use. The groove 21 and snap-fit ​​block 22 of the pressure cap 10 and the first connecting pipe 11 simplify the assembly process and enhance the structural robustness. The structural design of the baffle plate 13 and the gap 16 has significant technical advantages. The sleeve design of the water inlet pipe 15 and the second connecting pipe 14 creates a gap that further improves the mixing effect of soap solution and water flow.

[0038] In summary, this invention, through ingenious mechanical structure design, solves the problems of high cost and poor stability in existing foam shield devices. Its simple structure, reliable performance, and wide applicability give it high market value. In practical applications, this device can be widely used in various smart toilet models, especially mid-to-low-end products, meeting market demand while reducing production costs.

[0039] 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 techniques or knowledge in related fields. 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, characterized in that, The device comprises a shell, a liquid storage cavity and a mixing cavity arranged in the shell, a channel arranged between the liquid storage cavity and the mixing cavity, and a water inlet pipe arranged below the shell and connected with the mixing cavity. The device further comprises a movable rod arranged in the channel, a temporary storage space formed between the movable rod and the channel, and the movable rod being movable up and down between a first position and a second position in the channel. When the movable rod is in the first position in the channel, the liquid storage cavity is disconnected from the temporary storage space, and the temporary storage space is connected with the mixing cavity. When water flows into the water inlet pipe, the water flow pushes the movable rod to move upwards to the second position in the channel, the temporary storage space is disconnected from the mixing cavity, and the temporary storage space is connected with the liquid storage cavity.

2. A foam shield generating device according to claim 1, characterized in that The movable rod is provided with a first sealing ring and a second sealing ring arranged in the channel, the first sealing ring disconnects the liquid storage cavity from the temporary storage space when the movable rod is in the first position in the channel, and the second sealing ring disconnects the mixing cavity from the temporary storage space when the movable rod is in the second position in the channel.

3. A foam shield generating device according to claim 2, wherein The device further comprises a spring arranged to drive the movable rod to move downwards to the first position when the water inlet pipe is not supplied with water, so as to disconnect the liquid storage cavity from the temporary storage space.

4. A foam shield generating device according to claim 3, wherein The device further comprises a gland, a first connecting pipe arranged around the channel in the liquid storage cavity, and the gland being capable of being buckled around the outer periphery of the first connecting pipe.

5. A foam shield generating device according to claim 4, wherein The spring is sleeved around the outer periphery of the movable rod, the movable rod is provided with a flange around the periphery, one end of the spring is capable of abutting against the flange, and the other end of the spring is capable of abutting against the lower side of the gland.

6. A foam shield generating device according to claim 5, wherein The side wall of the gland is provided with a liquid outlet, the liquid in the liquid storage cavity can flow to the temporary storage space through the liquid outlet, the outer periphery of the first connecting pipe is provided with a first abutting portion, the inner periphery of the gland is provided with a second abutting portion, the first abutting portion is capable of abutting and cooperating with the upper side of the second abutting portion, so as to connect the gland and the first connecting pipe together.

7. A foam shield generating device according to any one of claims 1-6, characterized in that The inner side wall of the second abutting portion is provided with a clamping groove, the outer periphery of the first connecting pipe is further provided with a clamping block, and the rotation of the gland relative to the first connecting pipe can enable the clamping block to abut and cooperate with the clamping groove.

8. A foam shield generating device according to claim 7, characterized in that The lower end of the movable rod is further provided with a water baffle, the water flow of the water inlet pipe can impact the water baffle to drive the movable rod to move upwards, the water baffle is located below the channel, and the diameter of the water baffle is greater than the hole diameter of the channel.

9. A foam shield generating device according to claim 8, wherein The mixing cavity is provided with a second connecting pipe around the channel, the water baffle is located in the second connecting pipe, the water inlet pipe can extend into the mixing cavity and be sleeved around the inner periphery of the second connecting pipe, and a gap is formed between the inner periphery of the second connecting pipe and the outer periphery of the water inlet pipe, so as to squeeze the water flow and the liquid into the mixing cavity.

10. A foam shield generating device according to claim 9, wherein The shell is further provided with a pipeline, the inlet of the pipeline is connected with the mixing cavity, and the outlet of the pipeline is connected with a mixed liquid outlet on the shell. The shell is further provided with a liquid inlet and an air inlet, and the liquid inlet and the air inlet are connected with the liquid storage cavity.

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