Sterilizing toilet

Abstract

The present invention relates to the technical field of sanitary ware, and in particular to a sterilizing toilet, comprising a toilet body, a water tank, and a water inlet valve and a drain valve which are arranged in the water tank. The water inlet valve is provided with a water supply pipe; the drain valve is provided with an overflow pipe; and the water supply pipe is connected to the overflow pipe, so as to supply water to the toilet body by means of the overflow pipe to form a water seal. The sterilizing toilet further comprises a sterilizing gas supply device; the sterilizing gas supply device comprises a gas inlet pipe through which sterilizing gas passes; the gas inlet pipe is connected to the overflow pipe; and the sterilizing gas supply device is configured to supply the sterilizing gas to the overflow pipe by means of the gas inlet pipe, so that the sterilizing gas and water from the water supply pipe converge and mix to supply sterilizing water to the toilet body. The sterilizing water is supplied to a sewage discharge cavity or a water-using component of the toilet body by means of a flushing water channel, so as to sterilize the flushing water channel and the sewage discharge cavity or the water-using component of the toilet body, thereby inhibiting breeding of bacteria in the toilet body, and thus preventing the toilet from becoming a source of pathogenic contamination.

Description

A sterilizing toilet Technical Field

[0001] This invention relates to the field of bathroom technology, specifically to a sterilizing toilet. Background Technology

[0002] With societal development, people are increasingly emphasizing hygiene and health. Toilets, as a type of sanitation appliance, are also a route for bacterial transmission. Toilets include sit-down toilets, squat toilets, and urinals. After flushing, toilets are refilled with water to form a water seal at the bottom. The water used to flush is tap water, which cannot kill bacteria in the toilet bowl. Over time, this makes the toilet a source of contamination. Currently, toilet sterilization measures are limited to foam shields and localized ultraviolet (UV) sterilization. However, chemical sterilization is not environmentally friendly—foam shields are expensive and their sterilization range is limited to the toilet's drainage chamber. UV sterilization is limited by light propagation and only works where UV light can directly irradiate. Existing toilet sterilization measures all have certain limitations and are difficult to effectively kill bacteria across a broad spectrum. Secondly, in order to deodorize the toilet, existing technologies use a suction fan to remove the odor from the toilet's sewage chamber. However, the odor contains a large number of bacteria from the excrement. When the suction fan stops, some of the bacteria remain in the air duct, which is connected to the toilet's sewage chamber, thus contaminating the toilet. Summary of the Invention

[0003] The purpose of this invention is to provide a sterilizing toilet to solve the problem of a large number of bacteria in the toilet causing contamination and even infection of the user.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a sterilizing toilet, comprising a toilet body, a water tank, and an inlet valve and a drain valve disposed within the water tank. The inlet valve is provided with a water supply pipe, and the drain valve is provided with an overflow pipe. The water supply pipe is connected to the overflow pipe to supply water to the toilet body through the overflow pipe to form a water seal. The device also includes a sterilizing gas supply device, comprising an air inlet pipe for supplying sterilizing gas through which it passes. The air inlet pipe is connected to the overflow pipe, and the sterilizing gas supply device supplies sterilizing gas to the overflow pipe through the air inlet pipe, thereby causing the sterilizing gas to mix with water from the water supply pipe and supply sterilizing water to the toilet body.

[0005] In one embodiment, the overflow pipe is provided with a connector, the connector having a water supply connector and a gas connector, the water supply connector and the gas connector being internally connected, the water supply pipe being connected to the water supply connector, and the air inlet pipe being connected to the gas connector, thereby the water supply pipe and the air inlet pipe being indirectly connected to the overflow pipe through the connector, and the sterilizing gas being supplied to the interior of the connector by means of the negative pressure formed by the water flow in the water supply pipe and mixing with water to form the sterilizing water.

[0006] In one embodiment, the connector is a bottom-opening connecting cover, which is located on top of the overflow pipe. The outer surface of the top end face of the connecting cover is defined as the outer top surface, and the inner surface opposite it is defined as the inner top surface. The gas connector and the water supply connector are located on the outer top surface of the connecting cover. The connecting cover also has a mixing part inside, which is located on the inner top surface of the connecting cover. The mixing part is connected to the gas connector and the water supply connector respectively. Along the direction of water flow or air flow, the mixing part is located downstream of the gas connector and the water supply connector. The inner diameter of the mixing part is greater than or equal to the sum of the inner diameters of the gas connector and the water supply connector.

[0007] In one embodiment, the water tank is equipped with a gas-liquid mixing device, which includes a connecting cover. The connecting cover is a downward-opening cover-shaped structure. The upper part of the connecting cover is connected to the air inlet pipe so that the sterilizing gas enters the upper part of the connecting cover. The upper part of the connecting cover is higher than the preset maximum water level of the water tank, and the opening of the connecting cover is lower than the preset maximum water level of the water tank, thereby forming a gas chamber above the water surface.

[0008] The toilet also includes a gas-liquid discharge device, which includes a water inlet pipe with a gas-water inlet. The gas-water inlet is located inside the connecting cover and its position in the water tank is between a preset maximum water level and a preset minimum water level, thereby supplying the sterilizing water to the water-using components.

[0009] In one embodiment, the gas-liquid discharge device further includes a water pump, the inlet of which is connected to the water inlet pipe, and the outlet of which is connected to the water-using component, thereby supplying the sterilizing water to the water-using component; the water-using component includes any one or more of a seat ring sterilization component, a spray gun, and a human body rinsing spray pipe; the sterilizing gas supply device is an electro-ion generator.

[0010] In one embodiment, the connecting cover is provided with an aeration element, one end of which is provided with an air inlet. The air inlet is higher than the preset maximum water level and connected to the air inlet pipe. The aeration element is provided with an aeration core, which is provided with multiple aeration ports. The aeration ports are located below the preset maximum water level, and the aperture of the aeration ports is much smaller than the aperture of the air inlet. The aeration ports allow the bactericidal gas from the air inlet to disperse as small bubbles and enter the water.

[0011] In one embodiment, the aeration element is further provided with a first water inlet and a second water inlet. The first water inlet is disposed on the circumferential sidewall of the aeration element and surrounds the aeration port, and the second water inlet is connected to the air-water inlet.

[0012] In one embodiment, the toilet is a toilet with a seat ring, the surface of the seat ring for the user to sit on is defined as the seat support surface, the seat support surface is located on the upper surface of the seat ring, the water-using component is a seat ring sterilization component, the seat ring sterilization component includes a spray nozzle, the spray nozzle is used to spray the sterilizing water onto the seat support surface, and the spray nozzle is configured in any of the following ways:

[0013] (1) The spray nozzle is provided on the bearing surface of the seat ring so as to spray the disinfectant water upward when the top cover is closed, and to use the cover to block the disinfectant water to fall back onto the bearing surface.

[0014] (2) The spray nozzle is located on the upper cover and faces the bearing surface, so as to spray the bactericidal water onto the bearing surface when the upper cover is closed.

[0015] In one embodiment, the device further includes a suction and exhaust purification device for drawing gas from the sewage chamber of the toilet body. The air intake of the suction and exhaust purification device is connected to the sewage chamber and the overflow pipe, thereby connecting to the air inlet pipe via the overflow pipe, so that the suction and exhaust purification device can draw the sterilizing gas through the overflow pipe.

[0016] In one embodiment, a connector is provided at the top of the overflow pipe, the connector is provided with a gas connector, and the air inlet pipe is connected to the gas connector, so that the air inlet pipe is indirectly connected to the overflow pipe through the connector. The connector is a connecting cover with an open bottom end. The gas connector is located at a position of the connecting cover above the overflow port at the top of the overflow pipe. The connecting cover is located on the outer periphery of the top of the overflow pipe, and the bottom end of the connecting cover is lower than the top of the overflow pipe. The space between the inner side of the connecting cover and the outer side of the overflow pipe forms a fluid isolation chamber, so that the water spreading from the water tank to the fluid isolation chamber can form a gas isolation between the inside and outside of the connecting cover.

[0017] In one embodiment, the connecting cover is provided with a limiting part, the limiting part is provided with a water passage hole, and the limiting part abuts against the top end of the overflow pipe so that the water passage hole communicates with the overflow port at the top end of the overflow pipe.

[0018] In one embodiment, the limiting portion includes a plurality of claws extending from the top of the connecting cover toward the opening. The plurality of claws are arranged circumferentially at intervals along the overflow pipe. The ends of the claws are used to insert into the overflow pipe to connect the connecting cover to the overflow pipe, and the claws form an interference fit with the overflow pipe. The middle part of the claw is also provided with a step, which is used to abut against the top end face of the overflow pipe, so that the claw forms an installation limiting for the connecting cover. The water passage hole is formed between adjacent claws.

[0019] In one embodiment, the suction and exhaust purification device is a suction and exhaust fan. The suction and exhaust fan is mounted to the base of the drain valve via a fan mounting assembly. The air intake of the suction and exhaust fan is located on the side of the base. The base is provided with a hydraulically driven valve. The valve is rotatably mounted on the base. The valve includes a rotating shaft and a control part and an opening and closing part respectively located on both sides of the rotating shaft. The control part is used to control the valve to rotate under the drive of the water flow generated by the drain valve, so that the opening and closing part closes the air intake. The opening and closing part is used to drive the valve to rotate under the action of gravity to open the air intake.

[0020] The beneficial effects of this invention are:

[0021] 1. The air inlet pipe and water inlet valve of the sterilizing gas supply device are both connected to the overflow pipe. The sterilizing gas is supplied to the overflow pipe. During the water tank replenishment process, the sterilizing gas and water are mixed to form sterilizing water. The sterilizing water is supplied to the sewage chamber of the toilet body through the flushing channel, thereby sterilizing the flushing channel and sewage chamber of the toilet body, preventing bacteria from growing in the toilet body and preventing the toilet from becoming a source of germ contamination.

[0022] 2. Both the water supply pipe and the air inlet pipe are connected to the connector. The water flow in the water supply pipe creates a negative pressure, which allows the sterilizing gas to enter the overflow pipe and mix with the water flow. This eliminates the need for a positive pressure device such as an air pump at the sterilizing gas supply device, simplifying the structure of the sterilizing gas supply device and making the timing of sterilizing gas supply more reasonable.

[0023] 3. By setting up an air pump, the sterilizing gas can be supplied to the overflow pipe using the pressure of the air pump. Therefore, the air inlet pipe can be set to be longer, and the installation position requirements for the sterilizing gas supply device are lower.

[0024] 4. The air intake of the exhaust fan is connected to the toilet's drain chamber and overflow pipe. Therefore, it can simultaneously draw in sterilizing gas while drawing in and out the gas from the drain chamber. The sterilizing gas is then drawn into the exhaust fan's duct to sterilize the duct and the gas from the drain chamber, preventing bacteria from the drain chamber and drain pipe from remaining and contaminating the toilet, and further preventing the toilet from becoming a source of germ contamination.

[0025] 5. This invention can set the connecting cover inside the water tank and extend a part of it below the highest water level. The sterilizing gas entering the gas chamber of the connecting cover can be retained in the gas chamber, preventing the sterilizing gas from diffusing too quickly and failing to fully mix with the water. The sterilizing gas mixes with the water in the water tank to form sterilizing water, and the sterilizing water is supplied to the outside through the gas-liquid discharge device. The sterilizing water can be used to sterilize the parts of the toilet that need to be sterilized, thereby improving the sterilization effect. Attached Figure Description

[0026] Figure 1 is a perspective view of the sterilization toilet according to the first embodiment of the present invention.

[0027] Figure 2 is a perspective view of a portion of the structure of the sterilization toilet according to the first embodiment of the present invention.

[0028] Figure 3 is another perspective view of a portion of the structure of the sterilization toilet according to the first embodiment of the present invention.

[0029] Figure 4 is a top view of the sterilization toilet according to the first embodiment of the present invention.

[0030] Figure 5 is a cross-sectional view AA of Figure 4.

[0031] Figure 6 is a partial structural diagram of Figure 5.

[0032] Figure 7 is a BB cross-sectional view of Figure 4.

[0033] Figure 8 is a perspective view of the connecting cover according to the first embodiment of the present invention.

[0034] Figure 9 is another perspective view of the connecting cover of the first embodiment of the present invention.

[0035] Figure 10 is a perspective view of a toilet according to a second embodiment of the present invention.

[0036] Figure 11 is a perspective view of a toilet with the water tank concealed according to the second embodiment of the present invention.

[0037] Figure 12 is a top view of a toilet according to a second embodiment of the present invention.

[0038] Figure 13 is a CC sectional view of Figure 12.

[0039] Figure 14 is a magnified view of part D in Figure 13.

[0040] Figure 15 is a schematic diagram of an embodiment of the present invention in which the water nozzle is set in the seat ring.

[0041] Figure 16 is a schematic diagram of an embodiment of the present invention in which the water spray nozzle is set on the upper cover.

[0042] Figure 17 is a front view of an embodiment of the squat toilet of the present invention.

[0043] Figure 18 is a top view of an embodiment of the squat toilet of the present invention. Detailed Implementation

[0044] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0045] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0046] Example 1

[0047] Referring to Figures 1 to 3, this embodiment discloses a sterilizing toilet, including a toilet body 1 and a water tank 2. In this embodiment, a toilet seat is used as an example for explanation. In other embodiments, the toilet seat can also be a squat toilet or a urinal, specifically referring to a toilet seat, squat toilet or urinal with a water tank.

[0048] The water tank 2 is equipped with an inlet valve 3 and a drain valve 4. The inlet valve 3 has a water supply pipe 31, and the drain valve 4 has an overflow pipe 41. The water supply pipe 31 is connected to the overflow pipe 41 to supply water to the toilet body 1 through the overflow pipe 41 to form a water seal. It should be noted that the inlet valve 3, the water supply pipe 31, the drain valve 4, and the overflow pipe 41, as well as their working principles, are conventional technologies in this field and will not be described in detail here.

[0049] Referring to Figures 2 to 9, this embodiment also includes a sterilizing gas supply device (not shown in the figures of this embodiment; the sterilizing gas supply device labeled 5 is shown in the figures of the next embodiment). The sterilizing gas supply device includes an air inlet pipe 51 for discharging sterilizing gas, which can also be called an air supply pipe. The air inlet pipe 51 is connected to the overflow pipe 41. The sterilizing gas supply device is used to supply sterilizing gas to the overflow pipe 41 through the air inlet pipe 51, thereby mixing the sterilizing gas with water from the water supply pipe 31 to supply sterilizing water to the toilet body. When the water level in the water tank 2 drops, most of the water flow from the water inlet valve 3 is used to fill the water tank 2 until the water level in the water tank 2 reaches the preset high water level. A small portion of the water flow from the water inlet valve 3 flows through the water supply pipe 31 to the overflow pipe 41, and then through the overflow pipe 41 and the flushing channel of the toilet body 1 to the sewage chamber 11 of the toilet body 1. Finally, under the action of the sewage pipe 12 of the toilet body 1, a water seal is formed in the sewage chamber 11. During the process of draining water from the water supply pipe 31 to the toilet body 1 through the overflow pipe 41 to form a water seal, the sterilizing gas is also supplied to the overflow pipe 41 through the air inlet pipe 51. The sterilizing gas mixes with the flowing water to form sterilizing water, which sterilizes the areas through which the sterilizing water flows. The areas through which the sterilizing water flows are the overflow pipe 41, the flushing channel of the toilet body 1, and the sewage discharge chamber 11 of the toilet body 1. This eliminates bacteria in the sewage discharge chamber 11, thereby achieving the purpose of sterilizing the toilet and preventing the toilet body 1 from becoming a source of contamination due to a large number of bacteria, thus improving the cleanliness of the toilet.

[0050] A connector is provided at the overflow pipe 41. This connector can be referred to as a gas-liquid mixing device. In this embodiment, the connector is a connecting cover 6 with an open bottom, which covers the top of the overflow pipe 41. The outer surface of the top end face of the connecting cover 6 is defined as the outer top surface, and the inner surface opposite it is defined as the inner top surface. The outer top surface is provided with a water supply connector 61 and a gas connector 62. The water supply connector 61 and the gas connector 62 are internally connected. The water supply pipe 31 is connected to the water supply connector 61, and the air inlet pipe 51 is connected to the gas connector 62. Thus, the water supply pipe 31 and the air inlet pipe 51 are indirectly connected to the overflow pipe 41 through the connecting cover 6. With the help of the negative pressure formed by the water flow in the water supply pipe 31, the bactericidal gas is supplied to the inside of the connecting cover 6 and mixed with water to form bactericidal water. To further promote the mixing of water and sterilizing gas, a mixing section 63 is provided inside the connecting cover 6. The mixing section 63 is connected to the gas connector 62 and the water supply connector 61 respectively, and is located downstream of the gas connector 62 and the water supply connector 61 along the water or air flow. The inner diameter of the mixing section 63 is larger than the sum of the inner diameters of the gas connector 62 and the water supply connector 61. In this embodiment, the water supply connector 61 and the gas connector 62 are located on the outer top surface of the connecting cover 6, which facilitates the corresponding insertion of the water supply pipe 31 and the air inlet pipe 51 into the water supply connector 61 and the gas connector 62. The mixing section 63 is located on the inner top surface of the connecting cover 6, reducing the energy loss of the water flow. Secondly, the large inner diameter of the mixing section 63 creates a negative pressure zone between the water flow and the inner wall of the mixing section 63 when the water flows from the water supply connector 61 to the mixing section 63. This negative pressure can generate suction on the gas in the air inlet pipe 51, thereby drawing the sterilizing gas in the sterilizing gas supply device into the mixing section 63 and mixing it thoroughly with the water flow in the mixing section 63.

[0051] In this embodiment, the connecting cover 6 is placed on the top of the overflow pipe 41. Since the water supply pipe 31 of the existing water inlet valve 3 is mostly placed on the top of the water inlet valve 3, placing the connecting cover on the top of the overflow pipe 41 makes the length of the water supply pipe 31 shorter and the installation and connection simpler. In other embodiments, it is also feasible to place the connecting cover 6 in the middle of the overflow pipe 41.

[0052] Referring to Figures 5 to 7, this embodiment also includes a suction and exhaust purification device 7 for suctioning gas from the sewage chamber 11 of the toilet body 1. In this embodiment, the suction and exhaust purification device 7 is specifically a suction and exhaust fan 7. The air inlet 71 of the suction and exhaust fan 7 is connected to the sewage chamber 11 and the overflow pipe 41, thereby connecting to the air inlet pipe 51 through the overflow pipe 41, so that the suction and exhaust fan 7 can suck up sterilizing gas through the overflow pipe 41.

[0053] The suction and exhaust fan 7 is mounted to the base 42 of the drain valve 4 via the fan mounting assembly 8. The suction port 71 of the suction and exhaust fan 7 is located on the side of the base. When the suction and exhaust fan 7 is working, it draws air from the sewage chamber 11 of the toilet body 1 through the water outlet 21 of the water tank 2 and the flushing channel of the toilet body 1. This air becomes foul-smelling due to the excrement present in the sewage chamber 11. The installation relationship between the suction and exhaust fan 7 and the base 42 of the drain valve 4, and the drawing of air from the sewage chamber 11 through the water outlet 21 of the water tank 2 and the flushing channel of the toilet body 1, is existing technology and will not be described in detail here.

[0054] The flushing channel of the toilet body 1 refers to the channel through which the water discharged from the water tank 2 flows.

[0055] In this embodiment, the air intake 71 of the exhaust fan 7 is indirectly connected to the air inlet pipe 51 via the overflow pipe 41. This creates a negative pressure suction force on the air inlet pipe 51 when the exhaust fan 7 is operating, allowing the sterilizing gas from the sterilizing gas supply device to be drawn towards the exhaust fan 7 and discharged into the drain pipe 12, thus sterilizing the area through which the sterilizing gas passes. Since the air intake 71 of the exhaust fan 7 is connected to both the overflow pipe 41 and the drain chamber 11, the sterilizing gas mixes with the gas from the drain chamber 11 during the suction process, eliminating bacteria in the gas. This disinfects the area through which the sterilizing gas passes and also allows the exhaust fan 7 to discharge sterile gas. The areas through which the sterilizing gas passes during the operation of the exhaust fan 7 include the air inlet pipe 51, the overflow pipe 41, the drain outlet 43 of the drain valve 4, the air intake 71, and the air duct 70 of the exhaust fan 7. The flushing channel of the toilet body 1 is sterilized by the sterilizing water during the water replenishment process. The air duct 70 of the suction and exhaust fan 7 is a channel for gas circulation between the air intake 71 and the sewage pipe 12. The airflow formed by the suction of the suction and exhaust fan 7 flows through this channel to the sewage pipe 12.

[0056] In this embodiment, the exhaust fan 7's outlet is connected to the toilet's drain pipe 12, specifically the end of the drain pipe 12 closest to the sewer. This allows the drain chamber 11 to be isolated from the gas discharged from the exhaust fan 7's outlet via a water seal, thus discharging the gas into the sewer. In other embodiments, the exhaust fan 7's outlet can be connected to other locations, such as the bathroom's exhaust pipe, to discharge the gas from the drain chamber 11 outside the bathroom.

[0057] Since the exhaust fan 7 draws sterilizing gas from the sterilizing gas supply device using negative pressure, the conventional overflow pipe 41 in the prior art has an open top design to allow water in the water tank 2 to overflow through the overflow port at the top of the overflow pipe 41 when the water level is too high. The presence of the overflow port allows gas above the water surface in the water tank to be drawn into the overflow pipe 41 through the overflow port, which disrupts the exhaust fan 7's suction of the sterilizing gas from the sterilizing gas supply device, preventing the sterilizing gas from entering the overflow pipe 41 through the exhaust fan 7. Therefore, the overflow port of the overflow pipe 41 must be sealed. However, sealing the overflow port would affect its overflow function, making it impossible to guarantee that the water level in the water tank 2 is below the preset level.

[0058] Therefore, in this embodiment, the connecting cover 6 is placed on the outer periphery of the top of the overflow pipe 41, and the bottom of the connecting cover 6 is lower than the top of the overflow pipe 41. The space between the inner side of the connecting cover 6 and the outer side of the overflow pipe 41 forms a fluid isolation chamber 60, thereby forming a gas isolation between the inside and outside of the connecting cover by means of water spreading from the water tank 2 to the fluid isolation chamber 60. In order to allow the sterilizing gas to enter the overflow pipe 41 smoothly, the gas connector 62 should be set at a position of the connecting cover 6 above the overflow port at the top of the overflow pipe 41. In this embodiment, the gas connector 62 is set on the top surface of the connecting cover 6. In other embodiments, it is also feasible to set the gas connector 62 on the side of the connecting cover 6 and above the overflow port.

[0059] Furthermore, the gas connector 62 is not limited to the connecting cover 6 located at the top of the overflow pipe 41. In other embodiments, it is also feasible to locate the gas connector 62 on the side wall of the overflow pipe 41. For example, an opening can be made in the side wall of the overflow pipe 41 to install the air inlet pipe 51. The water supply pipe 31 can also be located on the side wall of the overflow pipe 41 to satisfy the above-mentioned suction force for the bactericidal gas during water replenishment. However, attention should be paid to the gas isolation of the overflow port at the top of the overflow pipe 41. In addition to using the connecting cover 6 (in this case, the connecting cover 6 does not have the water supply connector 61 and the gas connector 62), gas isolation can also be achieved by setting an electric valve to control the closure of the overflow port. The opening and closing of the electric valve is associated with the water level sensor of the water tank.

[0060] Referring to Figures 5 to 9, in order to retain the overflow function of the overflow pipe 41, a limiting part 64 is provided inside the connecting cover 6. The limiting part 64 has a water passage hole 641. The limiting part 64 abuts against the top end of the overflow pipe 41 so that the water passage hole 641 communicates with the overflow port at the top end of the overflow pipe 41. More specifically, the limiting part 64 in this embodiment includes a plurality of claws 642 extending from the top end of the connecting cover 6 toward the opening. The plurality of claws 642 are arranged circumferentially at intervals along the overflow pipe 41. The ends of the claws 642 are used to insert into the overflow pipe 41 so that the connecting cover 6 is connected to the overflow pipe 41. The claws 642 and the overflow pipe 41 form an interference fit, so that the connecting cover 6 is fixedly installed at the top end of the overflow pipe 41, preventing the connecting cover 6 from floating and moving under the influence of the water level in the water tank. The spaced arrangement of the claws 642 facilitates the insertion of the ends of the claws 642 into the overflow pipe 41 during the installation of the connecting cover 6, and the opening of the claws after installation helps to secure the connecting cover 6. A step 6420 is also provided in the middle of the claws 642, which abuts against the top end face of the overflow pipe 41, thus limiting the installation of the connecting cover 6 and preventing it from being installed too low. In this embodiment, the water passage hole 641 is formed between adjacent claws 642.

[0061] In other embodiments, the limiting part 64 may also be a limiting strip extending radially inside the connecting cover 6, the limiting strip abutting against the top end face of the overflow pipe 41, and adjacent limiting strips forming water passage holes.

[0062] In this embodiment, both the water supply connector 61 and the gas connector 62 are located on top of the connecting cover 6, which covers the top of the overflow pipe 41, thus ensuring that the water supply connector 61 and the gas connector 62 are above the water level in the tank. In other embodiments, it is also feasible to locate the water supply connector 61 and the gas connector 62 on the side of the connecting cover 6, but care should be taken to ensure that they are above the water level in the tank.

[0063] The overflow pipe 41 includes a fixed pipe 411 disposed on the base 42 and an adjusting pipe 412 disposed within the fixed pipe 411. Adjusting the adjusting pipe 412 vertically can adjust the height of the overflow pipe 41, thereby controlling the maximum water level of the water tank 2. In this embodiment, the connecting cover 6 is disposed at the top of the adjusting pipe 412, and the connection between the fixed pipe 411 and the adjusting pipe 412 is formed by a sealing ring between them (the sealing ring is not shown in the figure).

[0064] Referring to Figures 5 and 6, when the drain valve 4 is in the draining state, the suction fan 7 also exerts a negative pressure suction on the water flow. Therefore, there is a risk that the water flow may be sucked into the air intake 71 and then into the suction fan 7. To prevent this, a hydraulically driven valve 9 is provided on the base 42 of the drain valve 4. The valve 9 is rotatably mounted on the base 42 and includes a rotating shaft 91 and a control part 92 and an opening / closing part 93 respectively disposed on both sides of the rotating shaft 91. The control part 92 is used to control the rotation of the valve 9 under the drive of the water flow generated by the drain valve 4, so that the opening / closing part 93 closes the air intake 71. The opening / closing part 93 is used to drive the valve 9 to rotate under the action of gravity to open the air intake 71. In this embodiment, the air intake 71 is arranged downwards, and the control part 92 has a water-receiving surface 920 for receiving the water flow. Thus, under the drive of the water flow, the control part 92 rotates downwards, while the opening / closing part 93 rotates upwards to close the air intake 71. When the drain valve 4 closes and the water tank stops draining, the opening and closing part 93 resets under the action of gravity, thereby opening the air intake 71.

[0065] In the above embodiment, the sterilizing gas is supplied to the overflow pipe 41 by the negative pressure created by the water flow or the suction fan. In other embodiments, the sterilizing gas can also be supplied to the overflow pipe 41 by positive pressure. Specifically, an air pump can be installed in the sterilizing gas supply device. When necessary (e.g., when the water supply pipe 31 replenishes water to the toilet body 1 and when the suction fan is working), the air pump is turned on to supply the sterilizing gas to the overflow pipe 41 through the air inlet pipe 51. In the method of drawing the sterilizing gas by the negative pressure created by the water flow and the suction fan, in order to ensure that the water flow has sufficient suction for the sterilizing gas, the air inlet pipe 51 should be set to be relatively short. However, when using an air pump to supply the sterilizing gas, the air pump can form a stable positive pressure to push the sterilizing gas, so the air inlet pipe 51 can be set to be longer, making the arrangement of the sterilizing gas supply device more flexible. In addition, the method of drawing sterilizing gas by using the negative pressure formed by water flow and suction / exhaust fans in the above embodiments is simpler. It eliminates the need for an air pump, making the structure of the sterilizing gas supply device simpler. Furthermore, it eliminates the need to control the start and stop of the air pump based on the timing of water replenishment and the operation of the suction / exhaust fans, making control simpler and more precise.

[0066] The bactericidal gas is either ozone or chlorine, both of which can be mixed with water to form bactericidal water.

[0067] It should be noted that the location of the sterilization gas supply device is not limited to inside or outside the water tank 2. If the water resistance of the sterilization gas supply device is sufficient, it can be installed inside the water tank 2 to make the toilet more aesthetically pleasing and to facilitate the arrangement of the air inlet pipe 51. If the water resistance of the sterilization gas supply device is insufficient, it is also feasible to suspend it outside the water tank 2. Installing it in the water tank 2 facilitates the maintenance and replacement of the sterilization gas supply device.

[0068] The workflow of this embodiment is as follows:

[0069] When the user uses the toilet and there is no need to flush, the suction fan 7 starts to discharge the gas from the sewage chamber 11 into the sewage pipe 12 and then into the sewer. At the same time, the negative pressure suction force of the suction fan 7 draws the sterilizing gas to the location of the suction fan 7, thereby sterilizing the gas from the sewage chamber 11.

[0070] When flushing is required, the drain valve 4 opens to drain the water in the tank 2 into the drain chamber 11 of the toilet body 1. At this time, the valve 9 closes the air intake 71 under the action of the water flow, and the toilet performs normal flushing. At this time, the water level in the tank drops. As the water level in the tank drops, the inlet valve 3 starts to fill with water, and the water supply pipe 31 drains water to the overflow pipe 41. The water flow from the water supply pipe 31 creates a negative pressure in the connecting cover 6, which siphons the sterilizing gas, causing the sterilizing gas to enter the mixing part 63 of the connecting cover 6 and mix with the water to form sterilizing water. This sterilizing water is supplied to the drain chamber 11 of the toilet body to flush the drain chamber 11, and most of it remains in the drain chamber 11 to form a water seal. This sterilizing water sterilizes the flushing channel and the drain chamber 11 of the toilet body 1.

[0071] Example 2

[0072] Referring to Figures 10 to 14, this embodiment discloses a toilet, comprising:

[0073] Toilet body 1;

[0074] Water tank 2, which is equipped with inlet valve 3, drain valve 4 and gas-liquid mixing device 600;

[0075] The sterilization gas supply device 5 is equipped with an air inlet pipe 51, which can also be called a gas supply pipe. The air inlet pipe 51 is connected to the water tank 2 to supply sterilization gas into the water tank 2.

[0076] The gas-liquid mixing device 600 includes a connecting cover 6a, which can also be called a mixing cover. The connecting cover 6a is a downward-opening cover-shaped structure. The upper part of the connecting cover 6a is connected to the air inlet pipe 51 of the sterilizing gas supply device 5, so that the sterilizing gas enters the upper part of the connecting cover 6a. The upper part of the connecting cover 6a is higher than the preset maximum water level LH ​​of the water tank 2, and the opening of the connecting cover 6a is lower than the preset maximum water level LH ​​of the water tank 2, thus forming a gas cavity 601 above the water surface. In this embodiment, the upper part of the connecting cover 6a refers to the part higher than the preset maximum water level LH ​​of the water tank 2. With the preset maximum water level LH ​​as the boundary, the connecting cover 6a is divided into an upper part and a lower part. The upper part forms a gas cavity 601, which allows the sterilizing gas to dissolve in the water in the water tank and also enter the toilet drain chamber or the suction and purification device 7 through the water supply pipe. In this embodiment, the air inlet pipe 51 is connected to the connecting cover 6a from the gas connector 62 on the top surface of the connecting cover 6a. Alternatively, the gas connector 62 can be replaced with an insertion hole, and the air inlet pipe 51 can also be inserted into the connecting cover 6a from the insertion hole on the top surface of the connecting cover 6a. In other embodiments, the air inlet pipe 51 can also be inserted into the connecting cover 6a from the side of the connecting cover 6a at a position higher than the preset highest water level LH, thereby supplying sterilizing gas to the gas chamber 601.

[0077] The gas-liquid discharge device 200 includes a water inlet pipe 210 with a gas-water inlet 212, which is located inside the water tank 2, and is used to supply the sterilizing water mixed with the sterilizing gas and the water in the water tank 2 to the water-using components.

[0078] In this embodiment, the connecting cover 6a is placed inside the water tank 2 and a part of it extends below the preset maximum water level LH. The sterilizing gas enters the gas chamber 601 of the connecting cover 6a and can be retained in the gas chamber 601, preventing the sterilizing gas from diffusing rapidly and failing to fully mix with the water. The sterilizing gas mixes with the water in the water tank 2 to form sterilizing water, and the sterilizing water is supplied to the outside through the gas-liquid discharge device 200. The sterilizing water can be used to sterilize the parts of the toilet that need to be sterilized, thereby improving the sterilization effect.

[0079] The sterilizing gas supply device 5 is an ion generator, installed below and outside the water tank 2. An air inlet pipe 51 penetrates the side wall of the water tank to supply sterilizing gas into the tank 2. The ion generator produces sterilizing gases such as ozone, plasma, and active oxygen, which mix with water to form sterilizing water. The water diffuses the gas, resulting in a wide sterilization range and good effect. In this embodiment, the ion generator is installed below the water tank 2. Of course, in other embodiments, it can be designed to be installed in a suitable location, such as on the side of the water tank 2.

[0080] Referring to Figures 10 to 14, in order to further increase the content of bactericidal gases such as ozone, plasma, and active oxygen in the sterilized water, an aeration element 50 is provided inside the connecting cover 6a. One end of the aeration element 50 is provided with an air inlet 502, which is higher than the preset maximum water level LH ​​and connected to an air inlet pipe 51. An aeration core 501 is provided inside the aeration element 50, and multiple aeration ports 504 are provided on the circumferential surface of the aeration core 501. The aeration ports 504 are located below the preset maximum water level LH, and the aperture of the aeration ports 504 is much smaller than the aperture of the air inlet 502. The aeration ports 504 disperse the bactericidal gases from the air inlet 502 into the water as tiny bubbles. The aeration port 504 is set below the preset maximum water level LH, meaning that the aeration port 504 is submerged in the water. This allows the bactericidal gas to directly enter the water through the aeration port 504, causing the bactericidal gas to form tiny bubbles in the water. This prolongs the residence time of the bactericidal gas in the water, increases the solubility of the bactericidal gas in the water, increases the concentration of the bactericidal water, and enhances the bactericidal effect.

[0081] The aeration element 50 is also provided with a first water inlet 503 and a second water inlet 505. The first water inlet 503 is located on the circumferential sidewall of the aeration element 50 and surrounds the aeration port 504. The second water inlet 505 is connected to the air-water inlet 212. When the gas-liquid discharge device 200 is not discharging water, the liquid in the inlet pipe 210 tends to be stable. Water in the water tank enters the aeration element 50 through the first water inlet 503. The aeration port 504 is submerged in water, and the bactericidal gas is discharged from the aeration port 504 as tiny bubbles into the water. The bactericidal water formed in this way is retained in the water tank. When the gas-liquid discharge device 200 discharges water, the liquid in the inlet pipe 210 flows outward. Water in the water tank enters the aeration element 50 through the first water inlet 503. The aeration port 504 is submerged in water, and the bactericidal gas is discharged from the aeration port 504 as tiny bubbles into the water. The bactericidal water formed in this way is supplied to the external water-using components.

[0082] In addition, a water inlet can be installed on the water inlet pipe 210. The position of the water inlet inside the water tank is lower than that of the air-water inlet 212. When the water level in the water tank is higher than that of the air-water inlet 212, the sterilizing water can enter the water inlet pipe 210 through the air-water inlet 212. When the water level in the water tank is lower than that of the air-water inlet 212, the sterilizing water can be supplied to external water-using components through the water inlet. The position of the water inlet inside the water tank 2 is lower than the preset minimum water level LL of the water tank, thereby ensuring continuous water intake. The preset minimum water level LL of the water tank is controlled by the drain valve 4, and the height of the drain outlet of the drain valve 4 is the preset minimum water level LL of the water tank.

[0083] The air-water inlet 212 is located inside the connecting cover 6a, and its position in the water tank 2 is between the preset highest water level LH ​​and the preset lowest water level LL. This results in a higher concentration of sterilizing water in the area where the air-water inlet 212 is located, which has a better sterilization effect on external water-using components and can also prevent the water level in the water tank 2 from being discharged to below the preset lowest water level LL.

[0084] In this embodiment, the air inlet pipe 51 is connected to the air inlet 502 of the aeration element 50 through the gas connector 62 at the top of the connecting cover 6a. In other embodiments, the air inlet pipe 51 can be inserted into the connecting cover 6a, and the sterilizing gas is supplied from the sterilizing gas supply device 5 to the aeration element 50 through the pipe between the connecting cover 6a and the air inlet 502.

[0085] The water tank 2 is equipped with an inlet valve 3 and a drain valve 4. A connecting cover 6a is installed at the top of the overflow pipe 41 of the drain valve 4. A gas chamber 601 extends to the top of the overflow pipe 41 and communicates with it. The water tank 2 forms an overflow channel through the connection between the connecting cover 6a and the overflow pipe 41. The top of the connecting cover 6a is also equipped with a water supply connector 61, which can also be a water inlet. The water supply connector 61 is connected to the water supply pipe 31 of the inlet valve 3. The position of the water supply connector 61 corresponds to the overflow pipe 41, allowing water from the water supply pipe 31 to overflow into the overflow pipe 41 through the water supply connector 61. The opening at the bottom of the connecting cover 6a and the communication between the gas chamber 601 and the overflow pipe 41 connect the overflow pipe 41 and the water tank 2, maintaining the normal overflow function of the water tank 2. The inlet valve 3 is existing technology, and its float 22 determines the height of the preset maximum water level LH ​​of the water tank 2.

[0086] The connecting cover 6a is provided with a positioning step 43 to install the connecting cover 6a on the overflow pipe 41. More specifically, the connecting cover 6a covers the top of the overflow pipe 41, and the positioning step 43 is engaged with the top end face of the overflow pipe 41. There is a distance between the top surface of the connecting cover 6a and the top of the overflow pipe 41, which allows the overflow pipe 41 to communicate with the gas chamber 601. Thus, the water flow siphon from the water supply connector 61 and the suction and exhaust purification device can create suction on the bactericidal gas in the gas chamber 601, thereby eliminating and neutralizing odor-causing bacteria. The suction and exhaust purification device and the bactericidal gas in the gas chamber 601 will be described in detail below. The bactericidal gas mixes with the water supply to form bactericidal water, which is then supplied to the sewage chamber of the toilet, so that the water remaining in the sewage chamber can sterilize the sewage chamber.

[0087] The gas-liquid discharge device 200 also includes a water pump 220, which is installed below and outside the water tank 2. The inlet of the water pump 220 is connected to a water inlet pipe 210, which penetrates the side wall of the water tank 2 to supply sterilizing water to the water pump 220. In other embodiments, the water pump 220 can also be a submersible pump installed inside the water tank. In this case, the submersible pump should be lower than the gas-water inlet 212 to prevent it from being exposed above the water surface during operation (except for draining water through the drain valve, the submersible pump will only pump the water level to the height of the gas-water inlet 212, ensuring that the submersible pump is submerged in water). The outlet of the water pump 220 is connected to a water-using component, thereby supplying sterilizing water to the water-using component. The water-using component includes any one or more of a seat sterilization component, a spray gun, and a body rinsing nozzle.

[0088] The water tank 2 is equipped with a suction and exhaust purification device 7, which includes a suction and exhaust fan for drawing gas from the sewage chamber 11 of the toilet body. The suction port of the suction and exhaust fan is connected to the sewage chamber 11 and the overflow pipe 41, thereby connecting to the connecting cover 6a through the overflow pipe 41, so that the suction and exhaust fan can draw sterilizing gas through the overflow pipe 41. The suction and exhaust fan is mounted to the base 32 of the drain valve 4 through a fan mounting assembly. The suction port 201 of the suction and exhaust fan is located on the side of the base. When the suction and exhaust fan is working, it draws gas from the sewage chamber 11 of the toilet body through the drain outlet of the water tank 2 and the flushing channel of the toilet body. This gas becomes foul-smelling due to the excrement present in the sewage chamber 11. The installation relationship between the suction and exhaust fan and the base 32 of the drain valve 4 and the drawing of gas from the sewage chamber 11 through the drain outlet of the water tank 2 and the flushing channel of the toilet body is existing technology and will not be described in detail here.

[0089] The flushing channel of the toilet body refers to the channel through which the water discharged from the drain of the water tank 2 flows.

[0090] The present invention also indirectly connects the air intake of the exhaust fan to the sterilizing gas supply device 5 through the overflow pipe 41 and the connecting cover 6a. This creates a negative pressure suction force on the gas chamber 601 and the air inlet pipe 51 when the exhaust fan is working, allowing the sterilizing gas from the sterilizing gas supply device 5 to be drawn towards the exhaust fan and discharged into the drain pipe 12, thus sterilizing the area through which the sterilizing gas passes. Since the air intake of the exhaust fan is connected to both the overflow pipe 41 and the drain chamber 11, the sterilizing gas mixes with the gas from the drain chamber 11 during the process of drawing gas from the drain chamber, thereby eliminating bacteria contained in the gas. This disinfects the area through which the sterilizing gas passes and also allows the exhaust fan to discharge sterile gas.

[0091] Referring to Figures 10, 15 and 16, the toilet in this embodiment is a seated toilet with a seat ring 300 and a cover 400. In other embodiments, the toilet is a squat toilet (Figures 17 and 18).

[0092] The surface of the seat ring 300 for the user to sit on is defined as the bearing surface 301. The bearing surface 301 is located on the upper surface of the seat ring. In this embodiment, the water-using component is a seat ring sterilization component, which includes a spray nozzle 302. The spray nozzle 302 is used to spray sterilizing water onto the bearing surface 301. The spray nozzle 302 can be located on the upper cover 400 or on the seat ring 300. More specifically: when the spray nozzle 302 is located on the bearing surface 301 of the seat ring 300, it sprays sterilizing water upward when the upper cover 400 is closed, and the sterilizing water falls back onto the bearing surface 301 due to the obstruction of the upper cover 400, thereby sterilizing the bearing surface 301; when the spray nozzle 302 is located on the upper cover 400, it faces the bearing surface 301, so that it sprays sterilizing water onto the bearing surface 301 when the upper cover 400 is closed. In order to ensure that the disinfectant water is sprayed onto the bearing surface 72 sufficiently and to prevent the disinfectant water from being wasted due to an excessively large spray area (e.g., spraying into the drain cavity in the center of the seat ring), or to prevent the water pressure from being reduced due to an excessively large spray area (which would result in the disinfectant water not being able to spread sufficiently after being sprayed), in this embodiment, the spray nozzles 302 are arranged at intervals along the annular extension direction of the seat ring 300, so that the disinfectant water can be spread by means of the water pressure of the disinfectant water until it covers most or even all of the bearing surface 301.

[0093] Referring to Figures 17 and 18, the water-using component can also be a spray gun 500. When there are many water-using components, the water pump 220 is provided with multiple outlets. The water pump controls the water output of any one or more outlets to control the water output of the corresponding water-using component. Alternatively, an electronically controlled valve can be provided at each outlet of the water pump 220. The water output of the corresponding water-using component can be controlled by the cooperation of the water pump and the valve.

[0094] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A sterilizing toilet, characterized in that: The toilet includes a toilet body, a water tank, and an inlet valve and a drain valve disposed within the water tank. The inlet valve has a water supply pipe, and the drain valve has an overflow pipe. The water supply pipe is connected to the overflow pipe to supply water to the toilet body through the overflow pipe to form a water seal. The toilet also includes a sterilizing gas supply device, which includes an air inlet pipe for passing sterilizing gas through it. The air inlet pipe is connected to the overflow pipe, and the sterilizing gas supply device supplies sterilizing gas to the overflow pipe through the air inlet pipe, thereby mixing the sterilizing gas with water from the water supply pipe to supply sterilizing water to the toilet body.

2. The sterilizing toilet according to claim 1, characterized in that: The overflow pipe is provided with a connector, which has a water supply connector and a gas connector. The water supply connector and the gas connector are internally connected. The water supply pipe is connected to the water supply connector, and the air inlet pipe is connected to the gas connector. Thus, the water supply pipe and the air inlet pipe are indirectly connected to the overflow pipe through the connector. The negative pressure formed by the water flow in the water supply pipe allows the bactericidal gas to be supplied to the interior of the connector and mixed with water to form the bactericidal water.

3. The sterilizing toilet according to claim 2, characterized in that: The connector is a bottom-opening connecting cover, which is located on the top of the overflow pipe. The outer surface of the top end face of the connecting cover is defined as the outer top surface, and the inner surface opposite it is defined as the inner top surface. The gas connector and the water supply connector are located on the outer top surface of the connecting cover. The connecting cover also has a mixing part inside, which is located on the inner top surface of the connecting cover. The mixing part is connected to the gas connector and the water supply connector respectively. Along the direction of water flow or air flow, the mixing part is located downstream of the gas connector and the water supply connector. The inner diameter of the mixing part is greater than or equal to the sum of the inner diameters of the gas connector and the water supply connector.

4. The sterilizing toilet according to claim 1, characterized in that: The water tank is equipped with a gas-liquid mixing device, which includes a connecting cover. The connecting cover is a downward-opening cover-shaped structure. The upper part of the connecting cover is connected to the air inlet pipe so that the sterilizing gas enters the upper part of the connecting cover. The upper part of the connecting cover is higher than the preset maximum water level of the water tank, and the opening of the connecting cover is lower than the preset maximum water level of the water tank, thereby forming a gas cavity above the water surface. The toilet also includes a gas-liquid discharge device, which includes a water inlet pipe with a gas-water inlet. The gas-water inlet is located inside the connecting cover and its position in the water tank is between a preset maximum water level and a preset minimum water level, thereby supplying the sterilizing water to the water-using components.

5. A sterilizing toilet according to claim 4, characterized in that: The gas-liquid discharge device further includes a water pump, the inlet of which is connected to the water inlet pipe, and the outlet of which is connected to the water-using component, thereby supplying the sterilizing water to the water-using component; the water-using component includes any one or more of a seat ring sterilization component, a spray gun, and a human body rinsing spray pipe; the sterilizing gas supply device is an electro-ion generator.

6. A sterilizing toilet according to claim 4, characterized in that: The connecting cover is equipped with an aeration element, one end of which has an air inlet. The air inlet is higher than the preset maximum water level and connected to the air inlet pipe. The aeration element is equipped with an aeration core, which has multiple aeration ports. The aeration ports are located below the preset maximum water level, and the aperture of the aeration ports is much smaller than that of the air inlet. The aeration ports allow the bactericidal gas from the air inlet to disperse as small bubbles and enter the water.

7. A sterilizing toilet according to claim 6, characterized in that: The aeration element is further provided with a first water inlet and a second water inlet. The first water inlet is disposed on the circumferential sidewall of the aeration element and surrounds the aeration port. The second water inlet is connected to the air-water inlet.

8. A sterilizing toilet according to claim 4, characterized in that: This toilet is a toilet with a seat ring. The surface of the seat ring for the user to sit on is defined as the seat support surface, which is located on the upper surface of the seat ring. The water-using component is a seat ring sterilization component, which includes a spray nozzle for spraying sterilizing water onto the seat support surface. The spray nozzle can be configured in any of the following ways: (1) The spray nozzle is provided on the bearing surface of the seat ring so as to spray the disinfectant water upward when the top cover is closed, and to use the cover to block the disinfectant water to fall back onto the bearing surface. (2) The spray nozzle is located on the upper cover and faces the bearing surface, so as to spray the bactericidal water onto the bearing surface when the upper cover is closed.

9. A sterilizing toilet according to claim 1, characterized in that: It also includes a suction and exhaust purification device for drawing gas from the sewage chamber of the toilet body. The air intake of the suction and exhaust purification device is connected to the sewage chamber and the overflow pipe, thereby connecting to the air intake pipe through the overflow pipe, so that the suction and exhaust purification device can draw the sterilizing gas through the overflow pipe.

10. A sterilizing toilet according to claim 9, characterized in that: A connector is provided at the top of the overflow pipe, and the connector is provided with a gas connector. The air inlet pipe is connected to the gas connector, so that the air inlet pipe is indirectly connected to the overflow pipe through the connector. The connector is a connecting cover with an open bottom. The gas connector is located on the connecting cover at a position higher than the overflow port at the top of the overflow pipe. The connecting cover is located on the outer periphery of the top of the overflow pipe, and the bottom of the connecting cover is lower than the top of the overflow pipe. The space between the inner side of the connecting cover and the outer side of the overflow pipe forms a fluid isolation chamber, so that the water spreading from the water tank to the fluid isolation chamber can form a gas isolation between the inside and outside of the connecting cover.

11. A sterilizing toilet according to claim 10, characterized in that: The connecting cover is provided with a limiting part, and the limiting part is provided with a water passage hole. The limiting part abuts against the top of the overflow pipe so that the water passage hole communicates with the overflow port at the top of the overflow pipe.

12. A sterilizing toilet according to claim 11, characterized in that: The limiting part includes a plurality of claws extending from the top of the connecting cover toward the opening. The plurality of claws are arranged circumferentially at intervals along the overflow pipe. The ends of the claws are used to insert into the overflow pipe so that the connecting cover is connected to the overflow pipe. The claws and the overflow pipe form an interference fit. The middle part of the claw is also provided with a step, which is used to abut against the top end face of the overflow pipe, so that the claw forms an installation limit for the connecting cover. The water passage hole is formed between adjacent claws.

13. A sterilizing toilet according to claim 9, characterized in that: The suction and exhaust purification device is a suction and exhaust fan. The suction and exhaust fan is installed on the base of the drain valve through a fan mounting assembly. The air intake of the suction and exhaust fan is located on the side of the base. The base is equipped with a water-driven valve. The valve is rotatably mounted on the base. The valve includes a rotating shaft and a control part and an opening and closing part respectively located on both sides of the rotating shaft. The control part is used to control the valve to rotate under the drive of the water flow generated by the drain valve, so that the opening and closing part closes the air intake. The opening and closing part is used to drive the valve to rotate under the action of gravity to open the air intake.

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