A squat toilet

Abstract

A squat toilet includes a toilet bowl, a water tank, and a drain pipe. The toilet bowl has a flushing channel connecting to the toilet bowl, and the drain pipe connects the water outlet of the water tank and the flushing channel of the toilet bowl. A first installation opening is provided on the inner wall of the toilet bowl. It also includes a foam module, a foam pipe, and a control module. The foam module is installed inside the water tank and has a mixed liquid outlet. The foam pipe partially passes through the drain pipe, with its first end connected to the mixed liquid outlet and its second end having a foam outlet head installed at the first installation opening. The control module is installed on the water tank and electrically connected to the foam module to control the foam module to start or stop foaming. This utility model adopts a compact layout integrating the foam module inside the water tank and uses the drain pipe as the passage for the foam pipe, which does not affect the overall appearance, simplifies installation, facilitates maintenance and operation, and has strong versatility.

Description

Technical Field

[0001] This utility model relates to the field of sanitary ware, and in particular to a squat toilet. Background Technology

[0002] In daily life, the splashing of excrement is a common problem when using squat toilets, especially when urine hits the surface of the toilet bowl and when feces fall, which can easily cause contamination of skin, clothing, and shoes, seriously affecting hygiene. To solve this problem, existing technologies have added a foaming system, which covers the surface of the toilet bowl with a foam layer to prevent splashing and suppress the spread of odors.

[0003] Currently, commonly used foaming systems mainly adopt two installation methods: one is to integrate the foaming module into the water tank. Although the structure is compact, the entire water tank assembly needs to be disassembled when the foaming device fails, resulting in poor compatibility; the other is to install the foaming module externally and independently, which requires the separate laying of independent foam delivery pipes and power supply lines. This not only increases the installation complexity but also occupies valuable bathroom space, and the exposed pipes and equipment also affect the overall aesthetics. Utility Model Content

[0004] The main purpose of this utility model is to overcome the shortcomings of existing squat toilet foaming modules, such as inconvenient integrated maintenance, complex external installation, and large space occupation. It proposes a squat toilet that adopts a modular structure combined with pipe reuse, which is convenient to install, has a neat appearance, and is highly versatile.

[0005] The present invention adopts the following technical solution:

[0006] A squat toilet includes a toilet bowl, a water tank, and a drain pipe. The toilet bowl has a flushing channel connecting to the toilet bowl, and the drain pipe connects the water outlet of the water tank and the flushing channel of the toilet bowl. A first installation opening is provided on the inner wall of the toilet bowl. The toilet bowl also includes a foam module, a foam pipe, and a control module. The foam module is installed in the water tank and has a mixed liquid output port. The foam pipe is partially inserted into the drain pipe, with its first end connected to the mixed liquid output port and its second end having a foam outlet. The foam outlet is installed in the first installation opening. The control module is installed on the water tank and electrically connected to the foam module to control the foam module to turn on or off foaming.

[0007] The top of the inner wall of the toilet bowl is provided with several circumferentially spaced flushing holes, which are connected to the flushing channel; the rear of the toilet bowl is provided with a second installation port connected to the flushing channel for connecting the drain pipe; the first installation port is located below the several flushing holes and opposite to the second installation port; the second end of the foam pipe extends out of the end of the drain pipe, passes through the flushing channel, and is inserted into the first installation port.

[0008] The drain pipe includes a first section and a second section. The two ends of the first section are connected to the outlet of the water tank and one end of the second section, respectively. The second section is connected to the first section and has a first connector on its outer periphery. The inner wall of the second section near the first connector is also provided with a second connector that communicates with the first connector. The foam pipe is divided into a first foam pipe and a second foam pipe. The two ends of the first foam pipe are connected to the mixed liquid outlet and the first connector, respectively. The second foam pipe is located inside the second section and one end is connected to the second connector. The other end extends out of the end of the second section and is provided with a foam outlet.

[0009] It also includes a distance sensing unit, which is installed in the water tank to detect the distance information between the human target and the distance sensing unit; the control module is connected to the distance sensing unit to control the foam module to turn on or off foaming according to the distance information.

[0010] It also includes a switch unit, which is installed on the top, bottom, side, front, or rear of the water tank; the control module is electrically connected to the switch unit to control the foam module to start or stop the foaming function according to the command of the switch unit.

[0011] It also includes an inlet valve and an outlet valve; the inlet valve and the outlet valve are installed inside the water tank, and the outlet end of the outlet valve is connected to the outlet of the water tank; the control module is also electrically connected to the outlet valve to open or close the outlet valve to allow water to flow out according to the control.

[0012] The foam module is equipped with a liquid storage chamber, and the water tank is equipped with a top cover; the top cover is equipped with a liquid filling port at a position opposite to the liquid storage chamber, the liquid filling port is connected to the liquid storage chamber and is equipped with an openable and closable flip cover.

[0013] The foam module includes a box, a base, a foaming component, and a connecting pipe assembly. The box has a liquid storage chamber. The base is installed on the outer wall of the box and forms a receiving cavity therewith. The connecting pipe assembly has a water inlet pipe, a mixing liquid pipe, and a liquid inlet pipe. The water inlet pipe connects to a water tank, the liquid inlet pipe connects to the liquid storage chamber, and the mixing liquid pipe has a mixing liquid outlet. The foaming component is located in the receiving cavity and connected to the connecting pipe assembly. The control module is connected to the foaming component to control the extraction of clean water and foaming solution for mixing, and then outputting foam through the mixing liquid pipe.

[0014] The foam module also includes a conduit, with the first end of the conduit located inside the liquid storage chamber and extending to the top of the liquid storage chamber, and the second end of the conduit passing through the box and connected to the bottom of the water tank; the control module is installed at the bottom of the water tank and near the second end of the conduit; the mixing liquid pipe is inserted into the conduit and passes through the second end of the conduit to connect with the foam pipe.

[0015] The water tank includes a main body, a base, and a top cover; the main body is open from top to bottom and has a cavity to accommodate the foam module; the base is connected to the bottom of the main body and has a water outlet; the top cover is connected to the top of the main body; the control module and / or distance sensing unit are mounted on the base.

[0016] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0017] 1. In this utility model, the foam module is integrated inside the water tank, which realizes the compact layout of the foam module. The drain pipe is used as the passage for the foam pipe, which does not affect the overall appearance, simplifies the installation difficulty, reduces the space occupation, facilitates maintenance and operation, and has strong versatility.

[0018] 2. In this utility model, the second end of the foam pipe is inserted through the corresponding end of the drain pipe and through the flushing channel before being inserted into the first installation port. This arrangement not only ensures the reliability of foam delivery, but also avoids the need to add an extra foam delivery pipeline inside the toilet bowl, reducing costs and simplifying installation.

[0019] 3. In this utility model, the foam pipe is divided into a first foam pipe and a second foam pipe. The first foam pipe is located outside the first section of the drain pipe, and the second foam pipe is inserted into the second section of the outlet pipe. This segmented pipe design is not only convenient for installation and maintenance, but also makes effective use of the internal space of the drain pipe, so that the foam delivery pipeline is combined with the flushing water pipeline. While ensuring the realization of functions, it optimizes the overall structural layout and improves the space utilization rate.

[0020] 4. This utility model also includes a distance sensing unit and a switch unit. The distance sensing unit is used to detect the distance information of the human target, and the switch unit is used to input commands. The control module controls the foam module to turn on or off foaming according to the distance information. Alternatively, the control module can be configured to control the foam module to turn on or pause foaming according to the commands of the switch unit, etc., to meet the user's personalized control needs.

[0021] 5. In this utility model, the foam module includes a box, a base, a foaming component, and a connecting pipe. The box has a liquid storage chamber, and the base and the box form a receiving cavity to hold the foaming component. The connecting pipe includes a water inlet pipe connecting to the water tank, a liquid inlet pipe connecting to the liquid storage chamber, and a mixing liquid pipe with an output port. The control module controls the foaming component to mix clean water and foaming liquid to generate foam, which is output through the mixing liquid pipe. This modular structure has strong compatibility. The top cover of the water tank has a liquid inlet and an openable flip cover at a position opposite to the liquid storage chamber for easy addition of foaming liquid.

[0022] 6. In this utility model, the foam module also includes a conduit, one end of which is located at the top of the liquid storage chamber and has an openable and closable cap, while the other end passes through the housing and is detachably connected to the bottom of the water tank. The control module is located near the conduit, and the electrical connection wires of the foaming component are guided and connected to the control module through the conduit. The mixing liquid pipe extends from the conduit and connects to the foam pipe. The conduit provides a channel for the electrical wires and the mixing liquid pipe, preventing tangling and exposure, simplifying installation, and meeting waterproofing requirements. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the present utility model;

[0024] Figure 2 for Figure 1 Exploded view;

[0025] Figure 3 Diagram showing the fit between the foam module and the drainage pipe;

[0026] Figure 4 This is a magnified view of a portion of the foaming component;

[0027] Figure 5 This is a diagram of the internal structure of the foaming component;

[0028] Figure 6 Diagram showing the connection between the water tank and the drainage pipes;

[0029] Figure 7 Partial cross-section of this utility model Figure 1 ;

[0030] Figure 8 Partial cross-section of this utility model Figure 2 ;

[0031] Figure 9 This is a structural diagram of the present invention (with the flip cover open);

[0032] Figure 10 This is a schematic diagram of the usage state of this utility model (the target human body is in the urination position);

[0033] Figure 11 This is a schematic diagram of the usage state of this utility model (the target human body is in the position of defecation).

[0034] The components include: 10. Bedpan; 11. Toilet bowl; 12. First mounting port; 13. Second mounting port; 14. Flushing channel; 15. Flushing hole; 16. Inlet sealing ring; 20. Water tank; 21. Inlet valve; 22. Outlet valve; 23. Outlet; 24. Main body; 25. Base; 26. Top cover; 27. Receptacle; 28. Liquid filling port; 29. ​​Flip cover; 30. Drain pipe; 31. First section; 32. Second section; 33. First connector; 34. Second connector; 40. Bubble... Foam module; 41. Box body; 41a. Liquid storage chamber; 42. Base; 43a. Water pump; 43b. Liquid pump; 43c. Mixer; 44. Connecting pipe assembly; 44a. Water inlet pipe; 44b. Mixed liquid pipe; 44c. Liquid inlet pipe; 44d. Mixed liquid outlet; 45. Cap; 46. Wire conduit; 50. Foam pipe; 51. First foam pipe; 52. Second foam pipe; 53. Foam outlet head; 60. Control module; 70. Distance sensing unit; 80. Switch unit. Detailed Implementation

[0035] The present invention will be further described below through specific embodiments.

[0036] See Figures 1 to 11 A squat toilet includes a toilet bowl 10, a water tank 20, a drain pipe 30, a foam module 40, a foam pipe 50, and a control module 60. The toilet bowl 10 is provided with a flushing channel 14, a toilet bowl 11, and a sewage discharge channel. The flushing channel 14 connects to the toilet bowl 11, and water flows through the flushing channel 14 to flush the wall of the toilet bowl 11 before being discharged through the sewage discharge channel. The drain pipe 30 connects the water outlet 23 of the water tank 20 and the flushing channel 14 of the toilet bowl 10, and is used to deliver the flushing water discharged from the water outlet 23 of the water tank 20 to the toilet bowl 10. A first mounting opening 12 is provided on the inner wall of the toilet bowl 11, near the top of the rear part of the toilet bowl 11 or other suitable location, for installing a foam nozzle 53. Foam module 40 is installed inside water tank 20 and has a mixed liquid outlet 44d. The first end of foam pipe 50 is connected to the mixed liquid outlet 44d, and the second end has a foam outlet head 53 installed at the first mounting port 12. The portion of foam pipe 50 with the first end exposed is connected to drain pipe 30, and the portion with the second end passing through drain pipe 30. Control module 60 is installed on water tank 20 and electrically connected to foam module 40. Control module 60 controls foam module 40 to start or stop foaming. When foam module 40 starts foaming, mixed liquid outlet 44d outputs foam. After foaming is complete, control module 40 to stop foaming, and mixed liquid outlet 44d stops outputting foam.

[0037] The squat toilet of this utility model achieves a compact layout of the foam module 40 by detachably integrating the foam module 40 into the water tank 20, and uses the drain pipe 30 as the passage for the foam pipe 50, which does not affect the overall appearance, simplifies the installation difficulty, reduces the space occupation, facilitates maintenance and operation, and has strong versatility.

[0038] The toilet bowl 11 has several circumferentially spaced flushing holes 15 at its top, which communicate with the flushing channel 14. These evenly spaced flushing holes thoroughly flush the walls of the toilet bowl 11. A second mounting port 13, communicating with the flushing channel 14, is located at the rear of the toilet bowl 10. This second mounting port 13 connects to the corresponding end of the drain pipe 30, and the connection is sealed with a sealing ring. A first mounting port 12 is located below the flushing holes 15 and opposite the second mounting port 13. A sealing ring is also used to seal the first mounting port 12 and the foam outlet head 53. The second end of the foam pipe 50 extends out of the drain pipe 30, passes through the flushing channel 14, and then inserts into the first mounting port 12. This arrangement ensures reliable foam delivery while avoiding the need for additional foam delivery piping inside the toilet bowl 10, reducing costs and simplifying installation.

[0039] Furthermore, the drain pipe 30 includes a first section 31 and a second section 32. The first section 31 is an exposed structure, with its two ends connected to the outlet 23 of the water tank 20 and one end of the second section 32, respectively. The second section 32 is a pre-embedded structure. A first connector 33 is provided on the outer periphery of the end of the second section 32 connected to the first section 31. The end of the second section 32 where the first connector 33 is located is bent to facilitate connection with the first section 31. A second connector 34 communicating with the first connector 33 is also provided on the inner wall of the second section 32 near the first connector 33. The second connector 34 is partially located outside the second section 32. Correspondingly, the foam pipe 50 is divided into a first foam pipe 51 and a second foam pipe 52. The first foam pipe 51 can be tightly attached to the outer periphery of the first section 31. The two ends of the first foam pipe 51 are connected to the mixed liquid outlet 44d and the first connector 33, respectively. The second foam pipe 52 is located inside the second section 32, with one end connected to the second connector 34 and the other end extending out of the end of the second section 32 and connected to the foam outlet head 53. A water inlet sealing ring 16 is installed between the first connector 33 and the first foam pipe 51, and between the second connector 34 and the second foam pipe 52 for sealing. This segmented pipeline design facilitates installation and maintenance, and effectively utilizes the internal space of the drain pipe 30, organically combining the foam delivery pipeline with the flushing water pipeline. While ensuring functionality, it optimizes the overall structural layout and improves space utilization.

[0040] It also includes a distance sensing unit 70, which is installed in the water tank 20 to detect the distance information between the human target and the distance sensing unit. This distance sensor can be a millimeter-wave sensing module or an ultrasonic sensor, and it can be installed at the bottom of the water tank 20. The control module 60 is connected to the distance sensing unit 70 to control the foam module 40 to turn foaming on or off based on the distance information. For example, when the distance to the detected human target is within a set range, the control module 40 is controlled to output foam, realizing the foam shield function. Figure 11 When the target human body is outside the set range, the foam module 40 will not output foam. (See below) Figure 10 .

[0041] In practical applications, a switch unit 80 can also be installed. The switch unit 80 can be installed at a suitable location such as the top, bottom, side, front, or rear of the water tank 20; the figure shows it installed at the top of the water tank 20 as an example. The switch unit 80 is used to input commands to control the working state of the foam module 40. The switch unit 80 can be a touch-sensitive switch or a push-button switch, etc. The control module 60 is electrically connected to the switch unit 80 to control the foam module 40 to start or stop foaming according to the commands from the switch unit 80. For example, it can be set to activate the foaming function once by triggering the switch unit 80 once, or to pause the foaming function by triggering the switch unit 80 once, so that the foam module 40 does not work; triggering the switch unit 80 again will activate the foam module 40 normally.

[0042] In this embodiment, an inlet valve 21 and an outlet valve 22 are also included, which are installed inside the water tank 20. The inlet valve 21 is used to supply water to the water tank 20, and the outlet valve 22 is used to discharge water from the water tank 20 to the drain pipe 30 according to a flushing command. The outlet end of the outlet valve 22 is connected to the drain pipe 30 at the outlet 23 of the water tank 20. The outlet valve 22 is an electrically controlled outlet valve, and the control module 60 is also electrically connected to the outlet valve 22 to control the opening or closing of the outlet valve 22. The control module 60 can control the opening of the outlet valve 22 to discharge water based on the change in distance information detected by the distance sensing unit 70. For example, when a target human body is detected in the usage position and it is determined that the target human body is using the bedpan 10, and then when the target human body is detected to leave the usage position, it is determined that the use is completed, and the outlet valve 22 can be controlled to drain water. After the drainage is completed, the outlet valve 22 is controlled to close the drainage. If necessary, the outlet valve 22 can also be equipped with a mechanical button, which can be pressed to open the drainage function.

[0043] In this embodiment, see Figure 4 and Figure 5 The foam module 40 includes a box 41, a base 42, a foaming component, and a connecting pipe assembly 44. The box 41 has an opening at the top and a liquid storage chamber 41a inside. The base 42 is installed on the outside of the box 41, and a receiving cavity 27 is formed between the base 42 and the corresponding side of the box 41, which is used to house the foaming component. The connecting pipe assembly 44 includes a water inlet pipe 44a, a mixing liquid pipe 44b, and a liquid inlet pipe 44c. The water inlet pipe 44a connects to a water tank 20, the liquid inlet pipe 44c connects to the liquid storage chamber 41a, and the mixing liquid pipe 44b has a mixing liquid outlet 44d. The foaming component is located in the accommodating cavity 27 and connected to the connecting pipe group 44; the control module 60 is connected to the foaming component and is used to control the foaming component. After fully mixing the clean water drawn through the water inlet pipe 44a and the foaming solution drawn through the liquid inlet pipe 44c, foam is generated. The mixed liquid, i.e., the foam, is output from the mixed liquid outlet 44d through the mixed liquid pipe 44b.

[0044] The foaming component is a common foaming structure, including a water pump 43a, a liquid pump 43b, and a mixer 43c. The water pump 43a's inlet is connected to an inlet pipe 44a, and its outlet is connected to the mixer 43c. The liquid pump 43b's inlet is connected to an inlet pipe 44c, and its outlet is connected to the mixer 43c. The mixer 43c is also connected to a mixing pipe 44b. The control module 60 controls the operation of the water pump 43a and the liquid pump 43b to achieve the foaming function. Specifically, the liquid pump 43b is pre-controlled to draw foaming liquid into the mixer 43c. When the foaming function is activated, the water pump 43a is controlled to start drawing clean water into the mixer 43c to mix with the foaming liquid, and then extruding the mixture from the mixer 43c to achieve foaming. After foaming is complete, the liquid pump 43b draws liquid into the mixer 43c, ready for secondary mixing during the next foaming cycle.

[0045] Furthermore, the foam module 40 also includes a conduit 46. The first end of the conduit 46 is located within the liquid storage chamber 41a and extends to the top of the chamber. The first end of the conduit 46 is fitted with an openable cap 45. The second end of the conduit 46 passes through the housing 41 and connects to the bottom of the water tank 20. The connection between the second end and the bottom of the water tank 20 is detachable, facilitating quick and easy assembly and disassembly of the water tank 20 and the foaming component, and simplifying maintenance. The control module 60 is installed at the bottom of the water tank 20, near the second end of the conduit 46. The electrical connection wires of the foaming component can be guided through the conduit 46 to connect electrically with the control module 60. The mixing liquid pipe 44b is inserted from the first end of the conduit 46 and exits from the second end to connect to the foam pipe 50. The conduit 46 provides a directional channel for the electrical connection wires and the mixing liquid pipe 44b, preventing wire tangling or exposure and reducing installation complexity.

[0046] The water tank 20 includes a main body 24, a base 25, and a top cover 26. The main body 24 is vertically continuous and has a receiving cavity 27, which can accommodate components such as clean water, foam module 40, inlet valve 21, and outlet valve 22. The base 25 is connected to the bottom of the main body 24 and has a water outlet 23. The distance sensing unit 70 and the control module 60 can be installed on the base 25. The outlet end of the outlet valve 22 and the drain pipe 30 are connected at the outlet 23. The top cover 26 is connected to the top of the main body 24. The top cover 26 has a liquid inlet 28 located opposite the liquid storage cavity 41a of the foam module 40. The liquid inlet 28 is connected to the liquid storage cavity 41a and has an openable flip cover 29. By opening the flip cover 29, foaming agent can be added to the liquid inlet 28 without disassembling any parts.

[0047] The control module 60 of this squat toilet is implemented using a commonly used chip, such as the STM32 series chip. The specific working principle is as follows:

[0048] When the distance sensing unit 70 detects a human target entering the set range, the control module 60 starts the foam module 40; the liquid pump 43b of the foaming component draws foaming agent from the liquid storage chamber 41a, and the water pump 43a draws clean water from the water tank 20. The two are fully mixed in the mixer 43c to generate foam; the foam is output through the mixing pipe 44b and transported through the segmented foam pipe 50 (the first foam pipe 51 is close to the outer wall of the drain pipe 30, and the second foam pipe 52 is inserted inside the drain pipe 30) to the foam outlet 53 at the rear of the toilet bowl 11 and sprayed evenly, forming an isolation layer on the wall of the toilet bowl 11 to prevent dirt from adhering and block odors;

[0049] After the human target has finished using the toilet, the distance sensing unit 70 detects that the human has left, and the control module 60 triggers the water outlet valve 22 to open the water outlet. The clean water in the water tank 20 is transported to the flushing channel 14 of the toilet bowl 10 through the drain pipe 30, and the toilet bowl 11 is thoroughly flushed through the circumferentially distributed flushing holes 15; the sewage is discharged through the sewage outlet channel.

[0050] The terms "first" and "second" used in this utility model are merely for ease of description and to distinguish different components with the same name, and do not indicate a sequential or primary / secondary relationship.

[0051] In the description of this utility model, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "front" and "back" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.

[0052] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A squat toilet, comprising a toilet bowl, a water tank, and a drain pipe, wherein the toilet bowl is provided with a flushing channel communicating with the toilet bowl, and the drain pipe is connected between the water outlet of the water tank and the flushing channel of the toilet bowl; characterized in that: The toilet bowl has a first installation port on its inner wall; it also includes a foam module, a foam pipe, and a control module; the foam module is installed in the water tank and has a mixed liquid outlet; the foam pipe is partially inserted into the drain pipe and its first end is connected to the mixed liquid outlet, and its second end has a foam outlet head, which is installed in the first installation port; the control module is installed on the water tank and electrically connected to the foam module to control the foam module to start or stop foaming.

2. A squat toilet as described in claim 1, characterized in that: The inner wall of the toilet bowl is provided with a plurality of circumferentially spaced flushing holes at the top, and the flushing holes are connected to the flushing channel; the rear of the toilet bowl is provided with a second mounting port connected to the flushing channel for connecting the drain pipe; the first mounting port is located below the plurality of flushing holes and opposite to the second mounting port; the second end of the foam pipe extends out of the end of the drain pipe and passes through the flushing channel before being inserted into the first mounting port.

3. A squat toilet as described in claim 1, characterized in that: The drain pipe includes a first section and a second section. The first section is connected to the outlet of the water tank and one end of the second section at both ends, respectively. A first connector is provided on the outer periphery of the end of the second section connected to the first section. A second connector is also provided on the inner wall of the second section near the first connector, which communicates with the first connector. The foam pipe is divided into a first foam pipe and a second foam pipe. The first foam pipe is connected to the outlet of the mixed liquid and the first connector at both ends, respectively. The second foam pipe is located inside the second section, with one end connected to the second connector and the other end extending out of the end of the second section and connected to the foam outlet.

4. A squat toilet as described in claim 1, characterized in that: It also includes a distance sensing unit, which is installed in the water tank to detect the distance information between the human target and the distance sensing unit; the control module is connected to the distance sensing unit to control the foam module to turn foaming on or off according to the distance information.

5. A squat toilet as described in claim 1, characterized in that: It also includes a switch unit, which is installed on the top, bottom, side, front, or rear of the water tank; the control module is electrically connected to the switch unit to control the foam module to start or stop the foaming function according to the command of the switch unit.

6. A squat toilet as described in claim 1, 4, or 5, characterized in that: It also includes an inlet valve and an outlet valve; the inlet valve and the outlet valve are installed inside the water tank, and the outlet end of the outlet valve is connected to the outlet of the water tank; the control module is also electrically connected to the outlet valve to open or close the outlet valve to allow water to flow out according to the control.

7. A squat toilet as described in claim 1, characterized in that: The foam module is provided with a liquid storage chamber, and the water tank is provided with a top cover; the top cover is provided with a liquid inlet at a position opposite to the liquid storage chamber, the liquid inlet is connected to the liquid storage chamber and is provided with an openable and closable flip cover.

8. A squat toilet as described in claim 1, characterized in that: The foam module includes a box, a base, a foaming component, and a connecting pipe assembly; the box has a liquid storage chamber; the base is installed on the outer wall of the box and forms a receiving cavity therewith; the connecting pipe assembly has a water inlet pipe, a mixing liquid pipe, and a liquid inlet pipe, the water inlet pipe being connected to the water tank, the liquid inlet pipe being connected to the liquid storage chamber, and the mixing liquid pipe having a mixing liquid outlet; the foaming component is located in the receiving cavity and connected to the connecting pipe assembly; the control module is connected to the foaming component to control the extraction of clean water and foaming solution for mixing and then outputting foam through the mixing liquid pipe.

9. A squat toilet as described in claim 8, characterized in that: The foam module also includes a conduit, the first end of which is located inside the liquid storage chamber and extends to the top of the liquid storage chamber, and the second end of which passes through the box and is connected to the bottom of the water tank; the control module is installed at the bottom of the water tank and close to the second end of the conduit; the mixing liquid pipe is inserted into the conduit and extends out from the second end of the conduit to connect with the foam pipe.

10. A squat toilet as described in any one of claims 1 to 5 and 7 to 9, characterized in that: The water tank includes a main body, a base, and a top cover; the main body is through-hole and has a cavity to accommodate the foam module; the base is connected to the bottom of the main body and has the water outlet; the top cover is connected to the top of the main body; the control module and / or the distance sensing unit are disposed on the base.

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