Split toilet bowl foam shield

Abstract

This utility model belongs to the field of toilet technology, specifically referring to a two-piece toilet foam shield; it includes a liquid storage box, a peristaltic pump, a mixing tee, a water inlet valve, a distribution valve, and a foaming head; the mixing tee is provided with a first interface, a second interface, and a third interface; the liquid storage box is connected to the peristaltic pump through a first connecting pipe, the peristaltic pump is connected to the first interface of the mixing tee through a second connecting pipe, the water inlet valve is connected to the distribution valve through a third connecting pipe, the distribution valve is connected to the second interface of the mixing tee through a fourth connecting pipe, and the third interface of the mixing tee is connected to the foaming head through a fifth connecting pipe; the foaming head is provided with a Venturi tube structure and an independent air inlet channel and a liquid outlet, and the liquid outlet is connected to a foam spraying pipe for spraying foam; the integrated design of this utility model eliminates the need for a separate air pump and foam generator, significantly reduces the overall volume, optimizes the structural layout, and effectively reduces production costs.

Description

Technical Field

[0001] This utility model belongs to the field of toilet technology, specifically referring to a split-type toilet with a foam shield. Background Technology

[0002] Foam shield technology is widely used in the field of smart toilets. It generates foam to cover the toilet's water seal, effectively preventing splashing, staining, deodorizing, and antibacterial effects. A Chinese utility model patent (publication number CN 212165700U, publication date 2020.12.18) discloses a foam shield system for smart toilet seats. This system uses components such as a foam reservoir, a liquid pump, a foam generator, and an air pump. The liquid pump delivers foaming liquid to the foam generator to mix with water, and then an independent air pump injects air into the outlet connection pipe to generate foam. However, because this system includes multiple independent components such as the foam generator and air pump, its overall structure is complex, it occupies a large space, and its production cost is high. Summary of the Invention

[0003] The purpose of this invention is to provide a split-type toilet seat foam shield that eliminates the need for a separate foam generator and air pump, and utilizes the Venturi effect to achieve foaming, thereby solving the problems of complex structure, large space occupation, and high cost of existing technologies.

[0004] This utility model is implemented as follows: A foam shield for a split-type toilet seat, the split-type toilet seat includes a base, the base includes an upper shell and a lower shell, the foam shield includes a liquid storage container and a foaming device, the foaming device includes a liquid storage box, a peristaltic pump, a mixing tee, a water inlet valve, a distribution valve and a foaming head; the mixing tee is provided with a first interface, a second interface and a third interface; the liquid storage container is connected to the peristaltic pump through a first connecting pipe, the peristaltic pump is connected to the first interface of the mixing tee through a second connecting pipe, the water inlet valve is connected to the distribution valve through a third connecting pipe, the distribution valve is connected to the second interface of the mixing tee through a fourth connecting pipe, the third interface of the mixing tee is connected to the foaming head through a fifth connecting pipe, the foaming head is provided with a Venturi tube structure, an independent air inlet channel and a liquid outlet, the liquid outlet is connected to a foam spraying pipe for spraying foam.

[0005] In the aforementioned split-type toilet foam shield, the liquid storage container, peristaltic pump, mixing tee, water inlet valve, distribution valve, and foaming head are arranged compactly with the internal structure of the lower shell to minimize the connecting pipe path between the components.

[0006] In the aforementioned type of split-type toilet foam shield, the liquid storage container is a liquid storage box, including a lower box body and an upper box body. An injection port is provided on the upper box body. The liquid storage box is installed on the lower shell body. An injection hole for injecting liquid into the injection port is provided on the upper shell body. A sealing plug is provided on the injection hole.

[0007] In the aforementioned type of split-type toilet foam shield, the liquid storage box is provided with an overflow port, one end of the overflow pipe is connected to the overflow port, and the other end is provided on the overflow seat on the lower shell, the overflow seat having a downward drainage guide port.

[0008] In the aforementioned type of split-type toilet with foam shield, a snap-fit ​​seat is provided on the lower housing, and the overflow pipe is snapped onto the snap-fit ​​seat.

[0009] In the aforementioned type of split-type toilet foam shield, multiple overflow holes are provided on one side of the overflow seat on the lower shell.

[0010] In the aforementioned type of split-type toilet foam shield, the injection hole is set at any position along the outer edge of the upper shell, and the injection hole is connected to the injection port via a hose or directly.

[0011] In the aforementioned type of split-type toilet foam shield, a drain nozzle is provided on the bottom surface of the lower casing, a sealing plug is detachably provided on the drain nozzle, and an avoidance hole is provided on the lower casing to avoid the sealing plug.

[0012] In the aforementioned split-type toilet foam shield, the lower housing is provided with a plug-in connector, and a through hole is provided on the plug-in connector to penetrate the plug-in connector and the lower housing. The through hole constitutes an air inlet, and the two ends of the air inlet pipe are respectively connected to the air inlet channels of the plug-in connector and the foaming head.

[0013] The outstanding advantages of this utility model compared to the prior art are: 1. The mixing tee of this utility model serves as a miniature fluid hub, precisely merging the foaming liquid with the water supply pipeline to complete the initial mixing of the liquid phase. The premixed liquid is directly transported to the foaming head. The venturi tube structure inside the foaming head not only accelerates the generation of negative pressure in the liquid, but its compact cavity also integrates the three functions of air intake, mixing, and foaming, ultimately efficiently outputting foam through the liquid outlet. This integrated design eliminates the need for a separate air pump and foam generator, significantly reducing the overall volume, optimizing the structural layout, and effectively reducing production costs.

[0014] 2. This utility model allows for direct filling of the liquid storage box through the filling hole on the upper shell, making operation simple and convenient. The liquid storage box is also equipped with an overflow structure, so when too much liquid is added, the foaming liquid can be directly guided into the toilet, avoiding contamination of the machine's interior or wetting the floor. This also proves that the foaming liquid in the liquid storage box is full, thus eliminating the need for an observation window.

[0015] 3. The liquid storage container, peristaltic pump, mixing tee, water inlet valve, distribution valve and foaming head of this utility model are arranged in a compact manner in combination with the internal structure of the lower shell so as to minimize the connecting pipe path between the components. The shorter the connecting pipe, the smaller the flow resistance, and the more complete the foaming. At the same time, it can also reduce the waste of connecting pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the foam shield of this utility model installed on the lower shell.

[0017] Figure 2 This is a schematic diagram of the foam shield of this utility model.

[0018] Figure 3 This is a schematic diagram of the foam shield of this utility model installed inside the base.

[0019] Figure 4 This is a schematic diagram of the liquid storage box and overflow pipe of this utility model installed on the lower shell.

[0020] Figure 5 This is a schematic diagram of the bottom of the lower shell of this utility model facing upwards.

[0021] Figure 6 This is a front view of the foaming head of this utility model.

[0022] Figure 7 yes Figure 6 AA sectional view.

[0023] Figure 8 This is a schematic diagram of the liquid storage box of this utility model.

[0024] In the diagram: 1. Lower shell; 2. Upper shell; 3. Liquid storage box; 4. Peristaltic pump; 5. Mixing tee; 6. Water inlet valve; 7. Distribution valve; 8. Foaming head; 9. First connecting pipe; 10. Second connecting pipe; 11. Third connecting pipe; 12. Fourth connecting pipe; 13. Fifth connecting pipe; 14. Venturi tube structure; 15. Air inlet channel; 16. Liquid outlet; 17. Foam spray pipe; 18. Lower box body; 19. Upper box body; 20. Liquid injection port; 21. Sealing plug; 22. Overflow port; 23. Overflow pipe; 24. Overflow seat; 25. Guide port; 26. Snap-fit ​​seat; 27. Air inlet pipe; 28. Plug connector; 29. ​​Air inlet hole; 30. Spray nozzle; 31. Drain nozzle; 32. Sealing plug; 33. Overflow hole. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. Example 1: See Figure 1-8 : This embodiment provides a foam shield for a split-type toilet, which includes a base, a seat ring, and a toilet lid. The base includes a lower shell 1 and an upper shell 2, which form a receiving cavity. The foam shield includes a liquid storage container and a foaming device, which are disposed within the receiving cavity. The foaming device includes a peristaltic pump 4, a mixing tee 5, a water inlet valve 6, a distribution valve 7, and a foaming head 8. The mixing tee 5 has a first interface, a second interface, and a third interface. The liquid storage container 3 is connected to the peristaltic pump 4 through a first connecting pipe 9. The peristaltic pump 4 is connected to the first interface of the mixing tee 5 through a second connecting pipe 10. The water inlet valve 6 is connected to the distribution valve 7 through a third connecting pipe 11. The distribution valve 7 is connected to the second interface of the mixing tee 5 through a fourth connecting pipe 12. The third interface of the mixing tee 5 is connected to the foaming head 8 through a fifth connecting pipe 13. Furthermore, the foaming head 8 has a Venturi tube structure 14 inside, and has a liquid outlet 16 and an independent air inlet channel 15. The Venturi tube structure 14 includes a contraction section 14a, a throat 14b, and a diffuser section 14c along the fluid direction. Its working principle is as follows: water entering the mixing tee 5 via the inlet valve 6 and distribution valve 7 is premixed with the foaming liquid entering the mixing tee 5 via the storage box 3 and peristaltic pump 4. Subsequently, the premixed liquid is sent to the foaming head 8 via the fifth connecting pipe 13, first flowing through the contraction section 14a, where the cross-sectional area gradually decreases, and the flow velocity begins to increase. When the premixed liquid flows through the throat 14b, its flow velocity increases, while the static pressure of the fluid decreases. This pressure difference forces external air to be automatically drawn into the foaming head 8 through the independent air intake channel 15. The inhaled air and premixed liquid are vigorously mixed between the throat 14b and the diffuser section 14c. The mixed fluid enters the diffuser section 14c, where the cross-sectional area gradually increases. The flow rate decreases and the static pressure is partially restored. This process helps the air and liquid to be further sheared, mixed and refined, and finally form stable foam and be sprayed out from the outlet 16 through the foam injection pipe 17.

[0026] The mixing tee 5 of this invention acts as a miniature fluid hub, precisely merging the foaming liquid with the water supply pipeline to complete the initial mixing of the liquid phase. The premixed liquid is directly transported to the foaming head 8. The venturi tube structure 14 inside the foaming head 8 is not only responsible for accelerating the generation of negative pressure in the liquid, but its compact cavity also integrates the three functions of air intake, mixing and foaming, and finally outputs foam efficiently through the liquid outlet 16. This integrated design eliminates the need for a separate air pump and foam generator, significantly reduces the overall volume, optimizes the structural layout, and effectively reduces production costs.

[0027] Furthermore, the foam shield is disposed within the cavity formed by the lower shell 1 and the upper shell 2. The liquid storage container includes a liquid storage box 3, which comprises a lower box body 18 and an upper box body 19. The lower box body 18 and the upper box body 19 are connected to form a foaming liquid storage cavity. An injection port 20 is provided on the upper box body 19. The liquid storage box 3 is fixed to the lower shell 1. An injection hole is provided on the upper shell 2 at a position corresponding to the injection port 20, and a sealing plug 21 is provided on the injection hole. When the foaming liquid in the liquid storage box 3 is insufficient, the sealing plug 21 can be removed from the injection hole for direct injection. A funnel can be used for convenient injection. After injection, the sealing plug 21 can be reinstalled into the injection hole without disassembling the upper shell 2, making liquid addition quick and convenient and improving the user experience.

[0028] Furthermore, the liquid storage box 3, peristaltic pump 4, mixing tee 5, water inlet valve 6, distribution valve 7, and foaming head 8 are all distributed at any location on the lower housing 1 while maintaining the same connection sequence, thus fully realizing the foaming function. Preferably, to increase the foaming effect and reduce flow resistance, the components are arranged compactly according to the internal structure of the lower housing 1 to minimize the connecting pipe paths between the components. Each connecting pipe only needs to run from the outlet to the inlet, reducing or eliminating the need for transition pipes from the outlet to the inlet.

[0029] The injection hole of this invention can also be set at any position along the outer edge of the upper shell 2, depending on the actual design requirements. When the injection hole and the injection port 20 on the liquid storage box 3 are not set in corresponding positions, they can be connected by a flexible tube.

[0030] Furthermore, this invention features an overflow port 22 on the liquid storage box 3. One end of the overflow port 22 is connected to an overflow pipe 23, and the other end of the overflow pipe 23 is mounted on an overflow seat 24 on the lower housing 1. The overflow seat 24 has a downward-draining guide port 25, which directly guides the liquid into the toilet bowl, preventing contamination of the interior of the machine or wetting the floor. Therefore, when liquid is discharged from the guide port 25, it indicates that the foaming liquid in the liquid storage box 3 is full, thus eliminating the need for an observation window.

[0031] In order to fix the overflow pipe 23, a snap-fit ​​seat 26 is provided on the lower housing 1. The overflow pipe 23 is snapped on the snap-fit ​​seat 26 and will not shift. This also prevents the other end of the overflow pipe 23 from detaching from or shifting from the overflow seat 24.

[0032] When the foaming liquid overflows from the overflow seat 24, in order to drain the foaming liquid in time, the present invention also provides a number of overflow holes 33 on the lower housing 1 and on one side of the overflow seat 24 to prevent the foaming liquid from accumulating inside the base and causing corrosion damage to the internal components.

[0033] Furthermore, the air intake channel 15 of this utility model is connected to the lower housing 1 via the air intake pipe 27. Specifically, the lower housing 1 is provided with a plug-in connector 28, and a through hole is provided on the plug-in connector 28 to penetrate the plug-in connector 28 and the lower housing 1. The through hole forms an air intake hole 29, and the two ends of the air intake pipe 27 are respectively connected to the plug-in connector 28 and the air intake channel 15 of the foaming head 8.

[0034] Similarly, this invention also includes a spray nozzle 30 on the lower housing 1, which penetrates the lower housing 1. One end of the foam spray pipe 17 is connected to the liquid outlet 16 of the foaming head 8, and the other end is connected to the spray nozzle 30. It should be noted that the axis of the spray nozzle 30 is vertically oriented. The foam is directly sprayed into the toilet bowl cavity through the spray nozzle 30, covering the water seal surface inside the toilet bowl, quickly and evenly forming a complete covering layer, thus most effectively exerting its core functions of splash prevention, non-sticking, and odor isolation.

[0035] To facilitate the emptying of the foaming liquid in the storage box 3, this invention also provides a drain nozzle 31 on the bottom surface of the lower box body 18, and a sealing plug 32 is detachably provided on the drain nozzle 31. An avoidance hole is provided on the lower housing 1 to avoid the sealing plug 32. The sealing plug 32 and the drain nozzle 31 are detachably connected by a threaded or bayonet structure.

[0036] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A foam shield for a split-type toilet, the split-type toilet comprising a base, the base comprising an upper shell (2) and a lower shell (1), the foam shield comprising a liquid storage container and a foaming device, characterized in that: The foaming device includes a peristaltic pump (4), a mixing tee (5), a water inlet valve (6), a distribution valve (7), and a foaming head (8). The mixing tee (5) is provided with a first interface, a second interface, and a third interface. The liquid storage container is connected to the peristaltic pump (4) through a first connecting pipe (9). The peristaltic pump (4) is connected to the first interface of the mixing tee (5) through a second connecting pipe (10). The water inlet valve (6) is connected to the distribution valve (7) through a third connecting pipe (11). The distribution valve (7) is connected to the second interface of the mixing tee (5) through a fourth connecting pipe (12). The third interface of the mixing tee (5) is connected to the foaming head (8) through a fifth connecting pipe (13). The foaming head (8) is provided with a Venturi tube structure (14), an independent air inlet channel (15), and a liquid outlet (16). The liquid outlet (16) is connected to a foam spraying pipe (17) for spraying foam.

2. The foam shield for a split-type toilet according to claim 1, characterized in that: The liquid storage container, peristaltic pump (4), mixing tee (5), water inlet valve (6), distribution valve (7) and foaming head (8) are arranged in a compact manner in conjunction with the internal structure of the lower shell (1) so as to minimize the connecting pipe path between the components.

3. A split-type toilet seat foam shield according to claim 1 or 2, characterized in that: The foam shield is set in the cavity formed by the upper shell and the lower shell. The liquid storage container is a liquid storage box (3), including a lower box body (18) and an upper box body (19). An injection port (20) is opened on the upper box body (19). The liquid storage box (3) is installed on the lower shell (1). An injection hole for injecting liquid into the injection port (20) is provided on the upper shell (2). A sealing plug (21) is provided on the injection hole.

4. A split-type toilet seat foam shield according to claim 3, characterized in that: The liquid storage box (3) is provided with an overflow port (22). One end of the overflow pipe (23) is connected to the overflow port (22), and the other end is provided on the overflow seat (24) on the lower shell (1). The overflow seat (24) has a downward drain port (25).

5. A split-type toilet seat foam shield according to claim 4, characterized in that: Multiple overflow holes (33) are provided on one side of the overflow seat on the upper shell (1).

6. A split-type toilet seat foam shield according to claim 3, characterized in that: The injection hole is set at any position along the outer edge of the upper shell (2), and the injection hole is connected to the injection port (20) via a hose or directly.

7. A split-type toilet seat foam shield according to claim 3, characterized in that: The bottom surface of the lower box (18) is provided with a drain nozzle (31), and a sealing plug (32) is detachably provided on the drain nozzle (31). An avoidance hole for avoiding the sealing plug (32) is provided on the lower housing (1).

8. A split-type toilet seat foam shield according to claim 1, characterized in that: The lower housing (1) is provided with a plug-in connector (28), and a through hole is provided on the plug-in connector (28) and the lower housing (1). The through hole constitutes an air inlet (29), and the two ends of the air inlet pipe (27) are respectively connected to the air inlet channel (15) of the plug-in connector and the foaming head (8).

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