A toilet flushing system and a toilet

Abstract

The utility model relates to a flushing system of closestool and closestool, and the flushing system comprises a water pump and a first drain pipeline, the water pump is arranged in the water tank of closestool, the water pump is equipped with first water outlet and second water outlet, the direction of first water outlet is the water flow direction when motor rotates along the first direction, first water outlet is communicated with the import end of first drain pipeline, second water outlet is communicated with the washing hole of closestool, the bottom of water tank is equipped with drain hole, the drain hole is communicated with the blow-off hole of closestool, the export end of first drain pipeline is communicated with drain hole, or the export end of first drain pipeline is communicated with blow-off hole after passing through drain hole, or the export end of first drain pipeline is communicated with blow-off hole through pipeline, the pipeline passes through drain hole, the anti-siphon port is equipped on first drain pipeline, and the anti-siphon port is higher than the working water level of water tank, the utility model discloses only need to control the positive and negative rotation of water pump to realize different water outlet mode control, and the control is convenient, and the structure is simple, and the assembly is convenient.

Description

Technical Field

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

[0002] Toilet flushing generally includes draining water and washing the walls of the toilet bowl. Currently, most smart toilets use a water pump to supply water, with the pump located at the bottom of the toilet tank.

[0003] Due to customer demand, some toilets require different flushing modes, such as separate flushing and drainage, or flushing followed by simultaneous flushing and drainage. Based on existing pump structures, the approaches are essentially threefold: 1. Dedicated pumps for drainage and flushing, with separate operation of the two pumps to achieve this; 2. A single pump with two outlets (or a T-junction), with an internal on / off mechanism to control the separate water flow from each outlet; 3. A single pump with an external electronic switching valve for controlling the separate water flow. Approach 1 has higher equipment costs, consumes more power, and occupies more space in the toilet tank. Approaches 2 and 3 also suffer from increased equipment costs and more complex pump structures, leading to more potential failure points.

[0004] In addition, due to the installation of the water pump, it is often necessary to pre-install a connection hole in the toilet tank for installing the water pump. If the connection hole is not effectively sealed, it may cause the water tank to leak, and the assembly process is also more troublesome. Utility Model Content

[0005] The purpose of this utility model is to provide a toilet flushing system and toilet, which only requires one water pump and can achieve different water output modes by controlling the forward and reverse rotation of the water pump. It is easy to control, and has a simple structure and is easy to assemble.

[0006] To achieve the above objectives, this utility model discloses a toilet flushing system, which includes a water pump and a first drain pipe.

[0007] The water pump is placed in the toilet tank. The water pump includes a pump body, a motor, and an impeller. The pump body has a pump chamber, at least two outlets, and at least one inlet. The inlet connects to the pump chamber. The impeller is built into the pump chamber, and the motor drives the impeller to rotate. Both ends of the outlet are open-ended and connect to the pump chamber. The two outlets are defined as the first outlet and the second outlet, respectively. The orientation of the first outlet is the direction of water flow when the motor rotates in a first direction. The first outlet is connected to the inlet end of the first drain pipe. The second outlet is directly connected to the toilet's wash hole, or the second outlet is connected to the toilet's wash hole through a connecting pipe.

[0008] The toilet tank has a drain hole at the bottom; the drain hole is connected to the toilet's drain outlet, and the outlet end of the first drain pipe is connected to the drain hole; or, the outlet end of the first drain pipe passes through the drain hole and is connected to the toilet's drain outlet through a pipe, and the outlet end of the first drain pipe is sealed to the drain hole; or, the outlet end of the first drain pipe is connected to the toilet's drain outlet through a pipe, and the pipe passes through the drain hole and is sealed to it.

[0009] The first drain pipe is equipped with an anti-siphon inlet, and the anti-siphon inlet is higher than the working water level of the toilet tank.

[0010] With the above configuration, as long as the orientation of the second water outlet differs from the water flow direction when the motor rotates in the first direction (for example, the orientation of the second water outlet is the water flow direction when the motor rotates in the second direction, which is opposite to the first direction), water output control for different outlets can be achieved by controlling the forward and reverse rotation of the motor. This is convenient, and no additional on / off structure is needed to control the outlets, resulting in a simpler structure and lower manufacturing and maintenance costs for the water pump. Furthermore, by connecting the toilet's drain outlet to the first water outlet and the toilet's wash hole to the second water outlet, different flushing modes can be controlled by rotating the motor in both directions. For example, washing and draining can be performed separately, or washing and draining can be performed simultaneously. The anti-siphon design prevents water loss from the tank due to siphoning when the motor stops, ensuring normal water storage in the tank under normal conditions. Additionally, this invention has the advantage of a short drainage path.

[0011] Preferably, at least one limiting block is evenly distributed on the outer wall of the inlet end of the first drain pipe; a stop ring is provided on the outer periphery of the first outlet, and there is a gap between the stop ring and the outer wall of the first outlet, the width of which is adapted to the wall thickness of the inlet end of the first drain pipe, and the inlet end of the first drain pipe is inserted into the gap; the stop ring is provided with a limiting port corresponding to each limiting block, the limiting port including a limiting elongated hole that cooperates with the limiting block and a guide groove for guiding the limiting block into the limiting elongated hole, the length direction of the guide groove being the depth direction of the stop ring, and the length direction of the limiting elongated hole being the circumferential direction of the stop ring. Because the toilet has a large drainage water supply, the first drain pipe, as the first section of the entire drainage flow path, is subjected to a large pump water impact, and the above-mentioned arrangement can better stabilize it. Specifically, when installing the first drainage pipe, insert its inlet end into the gap and then rotate it to limit the inlet end. After the other end of the first drainage pipe is plugged and fixed, the first drainage pipe can maintain stability under the impact of large water volume, and the installation is convenient and quick.

[0012] Preferably, the first drainage pipe includes an adapter and a U-shaped pipe. One end of the adapter is the inlet end of the first drainage pipe, and the other end of the adapter is connected to one end of the U-shaped pipe, which is the outlet end of the first drainage pipe. The adapter and the U-shaped pipe are integrally formed, or the adapter and the U-shaped pipe are inserted together. The U-shaped pipe is arched, and the anti-siphon port is located at or near the top of the arch of the U-shaped pipe, and the anti-siphon port is connected to the cavity of the U-shaped pipe. This configuration facilitates the fabrication of the first drainage pipe.

[0013] Preferably, the opening of the first outlet is oriented parallel to the tangent direction of the outer edge of the pump chamber near it, or is set at an angle α with the tangent direction, wherein the angle α ≤ 30°;

[0014] The opening of the second outlet is parallel to the tangent direction of the outer edge of the pump chamber closest to it, or at an angle α to the tangent direction, wherein the angle α ≤ 30°, and the orientation of the second outlet is the direction of water flow when the motor rotates in the second direction, with the first direction opposite to the second direction; or, the opening of the second outlet is at an angle β to the tangent direction of the corresponding outer edge of the pump chamber, where β > 30°. When the opening of the second outlet is at an angle β to the tangent direction of the corresponding outer edge of the pump chamber, it can be ensured that water can be discharged from the second outlet when the motor rotates in either the first or second direction.

[0015] Preferably, the included angle α ≤ 10° and the included angle β > 45°.

[0016] Preferably, at least the first outlet has a secondary outlet, wherein both ends of the secondary outlet are through-holes and the secondary outlet connects to the corresponding outlet and the inner cavity of the housing. The connection point between the secondary outlet and the corresponding outlet is located on the side of the outlet near the connection end of the pump cavity. The cross-sectional area of ​​the outlet is larger than that of the secondary outlet, the depth of the pump cavity is greater than the diameter of the outlet, and the opening orientation of the secondary outlet is perpendicular to or at an angle b to the opening orientation of the corresponding outlet, where 30°≤b≤150°. The centerline of the secondary outlet passes through the center of the cross-section of the pump cavity. By providing secondary outlets, less water flows into the outlet when no water is needed. Furthermore, since all secondary outlets can connect to the water tank through the inner cavity of the housing and the water passage, the water volume in the tank is not lost, and the impact on the water output of the outlet is minimal. In addition, the above settings can ensure that when water is discharged from the outlet, the corresponding secondary outlet discharges water at a low flow rate or does not discharge water at all, reducing the impact of the secondary outlet discharge on the outlet discharge and ensuring the water pressure or flow rate of the outlet discharge.

[0017] Preferably, a guide member is provided in the pump chamber. The guide member is located between the first water outlet and the second water outlet, and is positioned close to the first water outlet. The length direction of the guide member is parallel to the water outlet direction of the first water outlet, and the height of the guide member is no more than one-third of the depth of the pump chamber. By providing the guide member, water can be discharged from the first water outlet, ensuring the flow rate of toilet drainage.

[0018] Preferably, the diameter of the first outlet is greater than or equal to the diameter of the second outlet.

[0019] Preferably, the toilet also includes a silencer pipe, one end of which is connected to a first water outlet or a first drain pipe, while the other end of the silencer pipe is suspended in the air above the working water level of the toilet tank. By installing the silencer pipe, the toilet can release air, eliminate air bubbles, and reduce noise during drainage.

[0020] Preferably, the system further includes a housing, in which the water pump and the first drain pipe are both housed, with the outlet end of the first drain pipe extending outside the housing; the second outlet extends outside the housing, or the second outlet extends outside the housing via a connecting pipe; the housing is provided with a water inlet / outlet hole. By housing the water pump and the first drain pipe, the three components can form an integrated unit, facilitating assembly and use, and simplifying the internal structure of the water tank. Furthermore, housing the water pump, the first drain pipe, and the silencer pipe within the housing helps reduce noise.

[0021] Preferably, the housing has a through hole for the outlet end of the first drain pipe to extend out. A limiting ring with an open loop is provided in the through hole. The middle section of the limiting ring is connected to the inner wall of the through hole, and the portions of the limiting ring on both sides of the middle section are suspended. The outlet end of the first drain pipe has a locking slot that engages with the inner ring of the limiting ring. The outlet end of the first drain pipe passes through the inner ring of the limiting ring and engages with the limiting ring through the locking slot. This configuration limits and fixes the outlet end of the first drain pipe, ensuring the stability of the flow path. Furthermore, the limiting ring structure, with its two ends suspended, has a certain degree of elasticity, making it easier to assemble and disassemble.

[0022] Preferably, the limiting ring includes a ring portion, an extension portion, and a reinforcing portion. The ring portion is connected to the inner wall of the through hole and engages with a locking mechanism. The extension portion extends axially from the outer edge of the ring portion, and the extension portion engages with the ring portion to form a limiting groove. The outlet end of the first drainage pipe is provided with a positioning ring adapted to the limiting groove. When the outlet end of the first drainage pipe is engaged with the limiting ring, the positioning ring is inserted into the limiting groove. The reinforcing portion is connected to the outside of the extension portion and corresponds to the suspended portion of the extension portion. This type of limiting ring structure has high strength, and its suspended portion is not easily broken. In addition, the limiting groove and positioning ring can better stabilize the outlet end of the second drainage pipe.

[0023] Preferably, the housing is further provided with air holes, and some or all of the air holes are higher than the working water level of the toilet tank. The air holes ensure that the water level inside the housing is consistent with the water level in the tank, thereby ensuring the supply of water for flushing and washing.

[0024] Preferably, the system further includes a transition pipe, which is detachably connected to the drain hole; or, the transition pipe is integrally formed with the toilet tank, and the cavity of the transition pipe serves as the drain hole. The outlet end of the first drain pipe is inserted into and connected to one end of the transition pipe located in the toilet tank, and the other end of the transition pipe is directly connected to the toilet's drain outlet; or, the other end of the transition pipe is connected to the toilet's drain outlet via a connecting pipe. The housing is detachably connected to the transition pipe. By providing the transition pipe, it is convenient to connect the first drain pipe to the drain outlet, and it also facilitates later maintenance. The detachable connection between the housing and the transition pipe helps ensure the installation stability of the integrated component.

[0025] Preferably, the system further includes a tightening component and a sealing component; the transition tube is provided with a stop that matches the drain hole; the transition tube passes through the sealing component and the drain hole in sequence and is then threadedly connected to the tightening component; the stop and the tightening component cooperate to secure the transition tube to the drain hole; the housing is snap-fitted to the stop. This configuration ensures a convenient and tight connection between the transition tube and the drain hole, provides a stable foundation for the installation of the integrated components, and also facilitates the manufacturing of the toilet body.

[0026] This utility model also discloses a toilet that uses the above-mentioned flushing system.

[0027] This utility model has the following beneficial effects:

[0028] This invention allows for switching between different water outlet modes by controlling the forward and reverse rotation of the motor. Control is convenient, and no additional on / off structure is needed for the water outlet, resulting in a simpler structure and lower manufacturing and maintenance costs for the water pump. Furthermore, the toilet's drain outlet is connected to the first water outlet, and the flushing hole is connected to the second water outlet. Different flushing modes can be controlled by rotating the motor, such as separate flushing and draining, or flushing followed by draining and flushing simultaneously. This design also features a short drainage path and low flushing noise. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of Example 1.

[0030] Figure 2 This is a schematic diagram from another perspective of Embodiment 1.

[0031] Figure 3 This is a cross-sectional view of Example 1.

[0032] Figure 4 This is a schematic diagram of the integrated component in Example 1.

[0033] Figure 5 This is a schematic diagram of the integrated component after the cover is hidden, as shown in Example 1.

[0034] Figure 6 This is a schematic diagram from another perspective after the integrated component is concealed under the cover in Embodiment 1.

[0035] Figure 7 This is a schematic diagram of the water pump in Example 1.

[0036] Figure 8 This is a schematic diagram of the water pump from another perspective in Example 1.

[0037] Figure 9 This is a cross-sectional view of the water pump in Example 1.

[0038] Figure 10 This is a partial schematic diagram of the pump body in Example 1.

[0039] Figure 11 This is a schematic diagram of the water pump output when the motor rotates forward in Example 1.

[0040] Figure 12 This is a schematic diagram of the water pump output when the motor reverses in Example 1.

[0041] Figure 13 This is a schematic diagram of the adapter in Example 1.

[0042] Figure 14 This is a schematic diagram of the U-shaped tube in Example 1.

[0043] Figure 15 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0044] Figure 16 This is a schematic diagram of the connection between the U-shaped tube and the base in Example 1.

[0045] Figure 17 This is a schematic diagram (sectional view) showing the connection between the U-shaped tube and the base in Embodiment 1.

[0046] Figure 18 This is a schematic diagram of the base in Embodiment 1.

[0047] Figure 19 This is a schematic diagram showing the connection between the integrated component and the transition tube.

[0048] Figure 20 This is a schematic diagram of the transition pipe and its connecting components in Embodiment 1.

[0049] Figure 21 This is an exploded view of the transition pipe and its connecting components in Embodiment 1.

[0050] Figure 22 This is a schematic diagram of the water pump output when the motor rotates forward in Example 3.

[0051] Figure 23 This is a schematic diagram of the water pump output when the motor reverses in Example 3.

[0052] Figure 24 This is a schematic diagram of Example 9.

[0053] Note: Figure 3 The image shows only the bottom of the toilet tank.

[0054] Explanation of symbols for main components:

[0055] Toilet body 10, toilet chamber 11, water tank 12, drain outlet 13, drain hole 14, water inlet control valve 15;

[0056] Integrated component 20, base 211, cover 212, water passage 213, air hole 214, through hole 215, limiting ring 216, ring part 217, extension part 218, reinforcing part 219, limiting groove 21a, adapter 221, U-shaped tube 222, limiting block 223, anti-siphon port 224, bayonet 225, positioning ring 226, silencer pipe 23, pump body 241, pump chamber 242, first outlet 243, second outlet 244, auxiliary port 245, guide 246, stop ring 247, guide groove 248, limiting elongated hole 249, inlet 24a, transition pipe 251, tightening part 252, sealing part 253, stop part 254;

[0057] Second drainage pipe 30;

[0058] Clean the pipes 40. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0060] Example 1

[0061] like Figure 1-21 As shown, this embodiment discloses a toilet, including a toilet body 10. The toilet body 10 has a toilet seat 11 and a water tank 12. A plurality of washing holes are spaced apart at the upper part of the wall of the toilet seat 11, and a drain outlet 13 is provided at the bottom of the toilet seat 11. A drain hole 14 and a water inlet are provided at the bottom of the water tank 12, and a water inlet control valve 15 is provided on the water inlet. Providing a drain hole 14 at the bottom of the water tank 12 helps to shorten the drainage path. The toilet in this embodiment uses a flushing system as described below, which includes an integrated component 20, a second drain pipe 30, and a washing pipe 40.

[0062] like Figure 3-6 As shown, the integrated component 20 includes a housing, a first drain pipe, a silencer pipe 23, and a water pump. The housing includes a base 211 and a cover 212, which are detachably connected. In this case, the cover 212 is directly inserted into the base 211, forming a cavity between the base 211 and the cover 212. The first drain pipe, the silencer pipe 23, and the water pump are disposed within the cavity. A water inlet 213 for supplying water is provided on the base 211, directly opposite the water pump inlet 24a, and a filter screen is provided on the water inlet 213. An air vent 214 is provided on the cover 212, and part or all of the air vent 214 is set higher than the working water level of the water tank 12. The air vent 214 ensures that the water level inside the housing is consistent with the water level in the water tank 12, thereby ensuring the supply of water for rinsing and washing.

[0063] like Figure 7-12As shown, the water pump includes a pump body 241, a motor, and an impeller. The pump body 241 has a pump chamber 242, two outlets, and an inlet 24a. The inlet 24a connects to the pump chamber 242, preferably directly opposite the water passage 213. The impeller is housed within the pump chamber 242, and the motor drives the impeller to rotate. Both ends of the outlet are open and connected to the pump chamber 242. The two outlets are defined as the first outlet 243 and the second outlet 244. The orientation of the first outlet 243 is the direction of water flow when the motor rotates in a first direction, and the orientation of the second outlet 244 is the direction of water flow when the motor rotates in a second direction. The first and second directions are opposite. To ensure smooth water flow when the water outlet faces the same direction as the motor during rotation, the outlet opening must be parallel to the tangent to the outer edge of the pump chamber 242 (α = 0), or at an angle α ≤ 30°, more preferably α ≤ 10°. It should be noted that this application does not require the angle between the opening of the first outlet 243 and the tangent to the outer edge of the pump chamber 242 to be equal to the angle between the opening of the second outlet 244 and the tangent to the outer edge of the pump chamber 242. In this application, the first outlet 243 is also provided with a secondary outlet 245, with both ends of the secondary outlet 245 being open and connected to the first outlet 243, while also connecting to the inner cavity of the housing. The connection point between the secondary port 245 and the first outlet 243 is located on the side of the first outlet 243 near the connection end of the pump chamber 242. The opening orientation of the secondary port 245 is perpendicular or inclined to the opening orientation of the first outlet 243. Specifically, the opening orientation of the secondary port 245 is set at an angle b with the opening orientation of the first outlet 243, where 30°≤b≤150°. Furthermore, it is preferable that the centerline of the secondary port 245 passes through the center of the cross-section of the pump chamber 242. In this case, it is also required that the cross-sectional area of ​​the first outlet 243 is larger than the cross-sectional area of ​​the secondary port 245, and the depth of the pump chamber 242 is greater than the diameter of the outlet. This arrangement ensures that when water is discharged from the outlet, the corresponding secondary port 245 discharges water at a small flow rate, reducing the impact of the water discharged from the secondary port 245 on the water discharged from its corresponding outlet, and ensuring the water pressure or flow rate at the outlet.

[0064] In addition, a guide member 246 is provided in the pump chamber 242. The guide member 246 is located between the first water outlet and the second water outlet, and is positioned close to the first water outlet. The length direction of the guide member 246 is parallel to the water outlet direction of the first water outlet, and the height H1 of the guide member 246 is no greater than one-third of the depth H2 of the pump chamber 242. By providing the guide member 246, water can be discharged from the first water outlet 243, ensuring the flow rate of the toilet flush.

[0065] In this embodiment, the diameter of the first outlet 243 is equal to or not significantly different from the diameter of the second outlet 244. Figure 11As shown, when the motor rotates in the first direction (e.g., clockwise), the first outlet 243 discharges water at a large flow rate, the second outlet 244 discharges water at a relatively large flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges no water or discharges water at a small flow rate. Figure 12 As shown, when the motor rotates in the second direction (e.g., counterclockwise), water mainly flows from the second outlet 244 (high flow rate), while the first outlet 243 either does not flow or flows at a low flow rate. The auxiliary outlet 245 corresponding to the first outlet 243 flows at a higher flow rate. This allows for time-sharing water flow from the first outlet 243 and the second outlet 244 by controlling the forward and reverse rotation of the motor. Control is convenient, and no additional on / off structure is needed for the outlets, resulting in a simpler structure and lower manufacturing and maintenance costs for the pump. Because all auxiliary outlets 245 are connected to the water tank 12, the water volume in the tank 12 is not lost, and the impact on the water flow rate is minimal.

[0066] The first drainage pipe includes an adapter 221 and a U-shaped pipe 222. One end of the adapter 221 is the inlet of the first drainage pipe, and the other end of the adapter 221 is connected to one end of the U-shaped pipe 222. The other end of the U-shaped pipe 222 is inserted into and connected to a transition pipe 251. The adapter 221 and the U-shaped pipe 222 are integrally formed, or the adapter 221 and the U-shaped pipe 222 are inserted together; the latter is preferred for ease of manufacturing. Figure 14 As shown, the U-shaped pipe 222 is placed in an arch shape, and an anti-siphon port 224 is set at the top of the arch or at the top of the arch. The anti-siphon port 224 is connected to the cavity of the U-shaped pipe 222, and the anti-siphon port 224 is set higher than the working water level of the water tank 12.

[0067] At least one limiting block 223 is evenly distributed on the outer wall of the inlet end of the first drainage pipe (i.e., one end of the adapter 221), such as Figure 13 As shown, two limiting blocks 223 are provided in this case. A stop ring 247 is provided on the outer periphery of the first outlet 243. There is a gap between the stop ring 247 and the outer wall of the first outlet 243, and the width of the gap is adapted to the wall thickness of the inlet end of the first drainage pipe. The inlet end of the first drainage pipe is inserted into the gap and is connected to the first outlet 243. The stop ring 247 is provided with limiting ports corresponding to the limiting blocks 223. The limiting ports include limiting elongated holes 249 that cooperate with the limiting blocks 223 for limiting, and guide grooves 248 for guiding the limiting blocks 223 into the limiting elongated holes 249. The length direction of the guide groove 248 is the depth direction of the stop ring 247, and the length direction of the limiting elongated holes 249 is the circumferential direction of the stop ring 247. When installing the first drainage pipe, first align the limiting block 223 at the inlet end of the adapter 221 with the guide groove 248 so that the inlet end can be inserted into the gap. Then rotate it to limit the inlet end. Figure 15As shown. After the other end of the first drainage pipe is inserted and fixed, that is, after the U-shaped pipe 222 is also inserted and fixed, the first drainage pipe can remain stable under the impact of large water volume, and the installation is convenient and quick. Furthermore, the orientation of the first outlet 243 can be made perpendicular to the orientation of the drain hole 14 to further improve the stability of the first drainage pipe.

[0068] like Figure 5 , 14 As shown, one end of the silencer pipe 23 is connected to the first drain pipe (specifically, to the U-shaped pipe 222), and the connection between the silencer pipe 23 and the first drain pipe is located near the outlet end of the first drain pipe or near the transition pipe 251. The other end of the silencer pipe 23 is suspended and higher than the working water level of the water tank 12. By setting up the silencer pipe 23, it can play the role of venting, eliminating air bubbles, and reducing the noise when the toilet is flushed.

[0069] Furthermore, this embodiment also connects the outlet end of the first drainage pipe (i.e., the outlet end of the U-shaped pipe 222) to the shell, thereby making the outlet end of the U-shaped pipe 222 more stable. Specifically, as Figure 14 , 16 As shown in Figures 17 and 18, a through hole 215 is provided on the base 211 of the housing for the outlet end of the first drain pipe to extend out. A limiting ring 216 with an open loop is provided in this through hole 215. The middle section of the limiting ring 216 is connected to the inner wall of the through hole 215 (integrated molding), and the portions of the limiting ring 216 on both sides of the middle section are suspended. A retaining clip 225 is provided at the outlet end of the first drain pipe to engage with the inner ring of the limiting ring 216. The outlet end of the first drain pipe passes through the inner ring of the limiting ring 216 and is engaged with the limiting ring 216 through the retaining clip 225. Because the limiting ring 216 is an open loop, i.e., it has a notch, and the portion near the notch is suspended, the suspended portion has a certain degree of elasticity. This makes it easier to assemble and disassemble the outlet end of the U-shaped pipe 222 and the limiting ring 216.

[0070] To ensure the strength of the limiting ring 216, it is designed as follows: The limiting ring 216 includes an integrally formed ring portion 217, an extension portion 218, and a reinforcing portion 219. The ring portion 217 is connected to the inner wall of the through hole 215, and the ring portion 217 is engaged with the bayonet 225 for limiting. The extension portion 218 is formed by the outer edge of the ring portion 217 extending axially, and the extension portion 218 and the ring portion 217 cooperate to form a limiting groove 21a. The outlet end of the first drainage pipe is provided with a positioning ring 226 adapted to the limiting groove 21a. When the outlet end of the first drainage pipe is engaged with the limiting ring 216, the positioning ring 226 is inserted into the limiting groove 21a, thereby better stabilizing the outlet end of the second drainage pipe. The reinforcing portion 219 is connected to the outside of the extension portion 218 and corresponds to the suspended part of the extension portion 218, so that the suspended part of the limiting ring 216 is not easy to break.

[0071] Of course, the outlet end of the first drainage pipe can pass directly through the base 211 without being fixed.

[0072] like Figure 3 , 17 As shown in Figures 19, 20, and 21, a transition pipe 251 is also provided on the drain hole 14. Specifically, the transition pipe 251 passes through the drain hole 14, with its upper end placed in the water tank 12 and its lower end placed outside the water tank. In this case, the transition pipe 251 is connected to and sealed to the drain hole 14 via a tightening member 252 and a sealing member 253. Specifically, a stop member 254 that limits the movement of the drain hole 14 is provided on the outer wall of the transition pipe 251. After the transition pipe 251 passes through the sealing member 253 and the drain hole 14 in sequence, it is threadedly connected to the tightening member 252. By rotating the tightening member 252, the stop member 254 and the tightening member 252 can cooperate to fasten the transition pipe 251 to the bottom of the water tank 12. The base 211 is located above the transition pipe 251. The base 211 and the stop member 254 are detachably connected, preferably by a snap-fit ​​connection. The number of snap-fits is at least three to ensure connection stability. After passing through the base 211, the first drain pipe (U-shaped pipe 222) is inserted into and connected to the end of the transition pipe 251 located in the water tank 12. At the same time, the first drain pipe (U-shaped pipe 222) and the transition pipe 251 cooperate to clamp the base 211, so that the integrated component 20 can be firmly placed at the bottom of the water tank 12.

[0073] One end of the second drain pipe 30 is connected to the other end of the transition pipe 251, and the other end of the second drain pipe 30 is connected to the drain outlet 13. Thus, the water flow path for flushing the toilet is: water tank 12 → inner cavity of the casing → water pump → first outlet 243 → adapter 221 → U-shaped pipe 222 → transition pipe 251 → second drain pipe 30 → drain outlet 13. The second outlet 244 is connected to the wash hole via the wash pipe 40.

[0074] With the above settings, when the toilet is flushed, the control motor first rotates in the second direction (counterclockwise) for a certain period of time and then rotates in the first direction (counterclockwise) for a certain period of time. At this time, the toilet executes a flushing mode in which washing and draining are performed simultaneously.

[0075] Example 2

[0076] The difference between this embodiment and Embodiment 1 is that the diameter of the first outlet 243 is larger than that of the second outlet 244, and the difference is significant. When the motor rotates in the first direction (e.g., clockwise), the first outlet 243 discharges water at a high flow rate, while the second outlet 244 and the corresponding auxiliary outlet 245 of the first outlet 243 discharge water at a low flow rate or no flow. However, when the motor rotates in the second direction (e.g., counterclockwise), the second outlet 244 discharges water primarily (at a high flow rate), while the first outlet 243 discharges water at a low flow rate or no flow, and the corresponding auxiliary outlet 245 discharges water at a relatively high flow rate. This achieves time-sharing water discharge from the first outlet 243 and the second outlet 244.

[0077] Example 3

[0078] like Figure 22 and Figure 23 As shown, the difference between this embodiment and Embodiment 1 is that the opening of the second outlet 244 is set at an angle β with the tangent direction of the outer edge of the corresponding pump chamber 242, where β > 30°, preferably β > 45°.

[0079] When the motor rotates in the first direction (e.g., clockwise), the first outlet 243 discharges water at a high flow rate, the second outlet 244 discharges water at a high flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges no water or discharges water at a low flow rate. However, when the motor rotates in the second direction (e.g., counterclockwise), water primarily flows from the second outlet 244 (at a high flow rate), the first outlet 243 discharges no water or discharges water at a low flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges water at a relatively high flow rate. In other words, regardless of whether the motor rotates in the first direction (clockwise) or the second direction (counterclockwise), water will always flow from the second outlet 244.

[0080] With the above settings, when the toilet is flushed, the control motor first rotates in the second direction (counterclockwise) for a certain period of time and then rotates in the second direction (counterclockwise) for a certain period of time. At this time, the toilet executes a flushing mode that first washes and then drains, and washes simultaneously.

[0081] Example 4

[0082] The difference between this embodiment and embodiment two is that the opening direction of the second water outlet 244 is set at an angle β with the tangent direction of the outer edge of the corresponding pump chamber 242, where β > 30°, preferably β > 45°.

[0083] When the motor rotates in the first direction (e.g., clockwise), the first outlet 243 discharges water at a high flow rate, the second outlet 244 discharges water at a low flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges no water or discharges water at a low flow rate. When the motor rotates in the second direction (e.g., counterclockwise), the second outlet 244 discharges water primarily (at a high flow rate), while the first outlet 243 discharges no water or discharges water at a low flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges water at a relatively high flow rate. This embodiment allows for timed water discharge for drainage and washing (when the motor rotates in the first direction, the second outlet 244 discharges water at a low flow rate, and the water reaching the washing holes is almost negligible).

[0084] Example 5

[0085] This embodiment, based on any of the above embodiments, eliminates the secondary outlet 245 on the first water outlet 243 and seals the location of the secondary outlet 245. Eliminating the secondary outlet 245 increases the water flow from the first water outlet 243 to some extent when the motor rotates in the second direction. However, by controlling the motor's forward and reverse rotation, speed, and rotation time, the same switching between different water flow modes as described above can be achieved. Taking the elimination of the secondary outlet 245 in Embodiment 1 as an example, in actual application to a toilet, the paths of the first and second drain pipes 30 are more convoluted and have larger diameters, while the length and diameter of the washing pipe 40 are smaller. When the motor rotates in the second direction (reverse rotation), the motor speed is lower and the running time is shorter, allowing only water to flow from the washing outlet while the toilet does not actually drain. Then, the motor switches to forward rotation, increasing the motor speed and running for a longer time, allowing washing and drainage to occur simultaneously.

[0086] Example 6

[0087] Based on Embodiment 1, this embodiment also includes a secondary outlet 245 on the second outlet 244. The relationship between the second outlet 244 and its corresponding secondary outlet 245 is the same as that between the first outlet 243 and its corresponding secondary outlet 245, and will not be repeated here. In this case, the first outlet 243 and the second outlet 244 will tend to discharge water at different times when the motor rotates in both directions. Specifically, when the motor rotates in the first direction (e.g., clockwise), the first outlet 243 discharges water at a large flow rate, while the second outlet 244 and the corresponding secondary outlet 245 of the first outlet 243 discharge no water or a small flow rate, and the corresponding secondary outlet 245 of the second outlet 244 discharges water at a larger flow rate. When the motor rotates in the second direction (e.g., counterclockwise), water is mainly discharged from the second outlet 244 (large flow rate), while the first outlet 243 and the auxiliary outlet 245 corresponding to the second outlet 244 do not discharge water or discharge water at a small flow rate, and the auxiliary outlet 245 corresponding to the first outlet 243 discharges water at a larger flow rate.

[0088] Example 7

[0089] This embodiment differs from any of the above embodiments by the following changes: the tightening member 252 and the sealing member 253 are eliminated, and the transition pipe 251 is integrally formed with the water tank 12. In this case, the cavity of the transition pipe 251 serves as the drain hole 14. This arrangement reduces one sealing node.

[0090] Example 8

[0091] This embodiment modifies any of the above embodiments by eliminating the transition pipe 251, allowing the outlet end of the first drainage pipe to be directly connected to the inlet end of the second drainage pipe 40. In this case, the outlet end of the first drainage pipe passes through the drain hole 14 and connects to the inlet end of the second drainage pipe 40, with the outlet end of the first drainage pipe and the drain hole 14 forming a sealed connection. The drain hole 14 serves as a clearance hole. Alternatively, the inlet end of the second drainage pipe 40 passes through the drain hole 14 and connects to the outlet end of the first drainage pipe, with the inlet end of the second drainage pipe and the drain hole 14 forming a sealed connection. Another alternative is that the outlet end of the first drainage pipe is connected to the inlet end of the second drainage pipe 40 via a pipe that passes through the drain hole 14 and is sealed to the drain hole 14.

[0092] Example 9

[0093] like Figure 24 As shown, this embodiment is based on any of the above embodiments, but the shell is removed. Removing the shell will not affect the implementation of the above flushing function and control.

[0094] It should be noted that the water flow rate of the first outlet 243 and the second outlet 244 of the water pump of this utility model is not only related to the direction of the motor rotation, but also to the motor speed (corresponding to the water inflow), as well as the orientation and diameter of the outlet. Different combinations can achieve water control methods different from those described in the above embodiments, which will not be listed here. The most crucial point of this utility model is that it controls the water flow of different outlets by controlling the forward and reverse rotation of the motor. Furthermore, when the water pump is connected to the toilet, the design of the pipe connecting the outlets also has a certain impact on the actual water flow. For example, with the U-shaped pipe 222, when the water head of the first outlet 243 is insufficient (i.e., when the water flow is low), the water from the first outlet 243 will still not flow into the second drain pipe 40 due to the effect of the drop equalization.

[0095] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A toilet flushing system, characterized in that: Including the water pump and the first drainage pipeline; The water pump is placed in the toilet tank. The water pump includes a pump body, a motor, and an impeller. The pump body has a pump chamber, at least two outlets, and at least one inlet. The inlet connects to the pump chamber. The impeller is built into the pump chamber, and the motor drives the impeller to rotate. Both ends of the outlet are open-ended and connect to the pump chamber. The two outlets are defined as the first outlet and the second outlet, respectively. The orientation of the first outlet is the direction of water flow when the motor rotates in a first direction. The first outlet is connected to the inlet end of the first drain pipe. The second outlet is directly connected to the toilet's wash hole, or the second outlet is connected to the toilet's wash hole through a connecting pipe. The toilet tank has a drain hole at the bottom; the drain hole is connected to the toilet's drain outlet, and the outlet end of the first drain pipe is connected to the drain hole; or, the outlet end of the first drain pipe passes through the drain hole and is connected to the toilet's drain outlet through a pipe, and the outlet end of the first drain pipe is sealed to the drain hole; or, the outlet end of the first drain pipe is connected to the toilet's drain outlet through a pipe, and the pipe passes through the drain hole and is sealed to it. The first drain pipe is equipped with an anti-siphon inlet, and the anti-siphon inlet is higher than the working water level of the toilet tank.

2. The flushing system of the toilet according to claim 1, characterized in that: At least one limiting block is evenly distributed on the outer wall of the inlet end of the first drainage pipe; a stop ring is provided on the outer periphery of the first outlet, and there is a gap between the stop ring and the outer wall of the first outlet, and the width of the gap is adapted to the wall thickness of the inlet end of the first drainage pipe, and the inlet end of the first drainage pipe is inserted into the gap; the stop ring is provided with a limiting port corresponding to each limiting block, and the limiting port includes a limiting elongated hole that cooperates with the limiting block and a guide groove for guiding the limiting block into the limiting elongated hole, the length direction of the guide groove is the depth direction of the stopping ring, and the length direction of the limiting elongated hole is the circumferential direction of the stopping ring.

3. The flushing system of the toilet according to claim 2, characterized in that: The first drainage pipe includes an adapter and a U-shaped pipe. One end of the adapter is the inlet end of the first drainage pipe, and the other end of the adapter is connected to one end of the U-shaped pipe, which is the outlet end of the first drainage pipe. The adapter and the U-shaped pipe are integrally formed, or the adapter and the U-shaped pipe are inserted together. The U-shaped pipe is placed in an arch shape, and the anti-siphon port is located at or near the top of the arch of the U-shaped pipe, and the anti-siphon port is connected to the cavity of the U-shaped pipe.

4. The flushing system of the toilet according to claim 1, characterized in that: The opening of the first outlet is oriented parallel to the tangent direction of the outer edge of the pump chamber near it, or is set at an angle α with the tangent direction, wherein the angle α ≤ 30°; The opening of the second outlet is parallel to the tangent direction of the outer edge of the pump chamber closest to it, or is set at an angle α with the tangent direction, wherein the angle α ≤ 30°, and the orientation of the second outlet is the direction of water flow when the motor rotates in the second direction, wherein the first direction is opposite to the second direction; or, the opening of the second outlet is set at an angle β with the tangent direction of the corresponding outer edge of the pump chamber, wherein β > 30°.

5. The flushing system of the toilet according to claim 4, characterized in that: The included angle α ≤ 10°, and the included angle β > 45°.

6. The flushing system of the toilet according to claim 1, characterized in that: Of the first and second water outlets, at least the first water outlet is provided with a secondary outlet. Both ends of the secondary outlet are open-ended, and the secondary outlet connects to the corresponding water outlet and the inner cavity of the housing. The connection position between the secondary outlet and the corresponding water outlet is located on the side of the water outlet near the connection end of the pump cavity. The cross-sectional area of ​​the water outlet is larger than the cross-sectional area of ​​the secondary outlet, the depth of the pump cavity is larger than the diameter of the water outlet, and the opening orientation of the secondary outlet is perpendicular to or at an angle b to the opening orientation of the corresponding water outlet, where 30°≤b≤150°. The centerline of the secondary outlet passes through the center of the cross-sectional circle of the pump cavity.

7. The toilet flushing system according to claim 1, characterized in that: A guide is provided in the pump chamber. The guide is located between the first outlet and the second outlet, and is close to the first outlet. The length direction of the guide is parallel to the water outlet direction of the first outlet, and the height of the guide is no more than one-third of the depth of the pump chamber.

8. The flushing system of the toilet according to claim 1, characterized in that: The diameter of the first outlet is greater than or equal to the diameter of the second outlet.

9. The flushing system of the toilet according to claim 1, characterized in that: It also includes a silencer pipe, one end of which is connected to the first water outlet or the first drainage pipe, while the other end of the silencer pipe is suspended in the air, and the suspended end of the silencer pipe is higher than the working water level of the toilet tank.

10. The flushing system of the toilet according to claim 1, characterized in that: It also includes a housing, in which the water pump and the first drain pipe are both housed, and the outlet end of the first drain pipe extends to the outside of the housing; the second outlet extends to the outside of the housing, or the second outlet extends to the outside of the housing through a connecting pipe; the housing is provided with a water inlet and outlet hole for supplying water.

11. The flushing system of the toilet according to claim 10, characterized in that: The housing is provided with a through hole for the outlet end of the first drainage pipe to extend out. A limiting ring with an open loop is provided in the through hole. The middle section of the limiting ring is connected to the inner wall of the through hole, and the portions of the limiting ring on both sides of the middle section are suspended. The outlet end of the first drainage pipe is provided with a retaining groove that fits into the inner ring of the limiting ring. The outlet end of the first drainage pipe passes through the inner ring of the limiting ring and is engaged with the limiting ring through the retaining groove.

12. The flushing system of the toilet according to claim 11, characterized in that: The limiting ring includes a ring portion, an extension portion, and a reinforcing portion. The ring portion is connected to the inner wall of the through hole and is engaged with a locking mechanism. The extension portion is formed by the outer edge of the ring portion extending axially and is engaged with the ring portion to form a limiting groove. The outlet end of the first drainage pipe is provided with a positioning ring adapted to the limiting groove. When the outlet end of the first drainage pipe is engaged with the limiting ring, the positioning ring is inserted into the limiting groove. The reinforcing portion is connected to the outside of the extension portion and corresponds to the suspended portion of the extension portion.

13. The flushing system of the toilet according to claim 10, characterized in that: The housing is also provided with air holes, and some or all of the air holes are higher than the working water level of the toilet tank.

14. The flushing system of the toilet according to claim 10, characterized in that: It also includes a transition pipe, which is detachably connected to a drain hole, or the transition pipe is integrally formed with the toilet tank, and the cavity of the transition pipe is a drain hole; the outlet end of the first drain pipe is inserted into and connected to one end of the transition pipe located in the toilet tank, and the other end of the transition pipe is directly connected to the toilet's drain outlet, or the other end of the transition pipe is connected to the toilet's drain outlet through a connecting pipe; the housing is detachably connected to the transition pipe.

15. The flushing system of the toilet according to claim 14, characterized in that: It also includes a tightening component and a sealing component; the transition tube is provided with a stop that matches the drainage hole limit; the transition tube passes through the sealing component and the drainage hole in sequence and is then threadedly connected to the tightening component; the stop and the tightening component cooperate to fasten the transition tube to the drainage hole; the housing is snapped together with the stop.

16. A toilet, characterized in that: The flushing system described in any one of claims 1-15 is adopted.

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