Closestool single-pump flushing device and flushing method

Abstract

The invention discloses a closestool single-pump flushing device and a flushing method.The closestool single-pump flushing device comprises a water tank, a water inlet valve, a water pump, a distribution valve, a washing water pipe, a spraying water pipe, a water supplementing pipe and a driving part, the water inlet valve and the water pump are arranged in the water tank, the water inlet valve is provided with a water supplementing hole, and a valve cavity is formed in the distribution valve; a washing water outlet hole, a spraying water outlet hole, a water supplementing inlet and a main water inlet which are all communicated with the valve cavity are formed in the distribution valve, a water outlet of the water pump is communicated with the main water inlet, the water supplementing inlet is communicated with the water supplementing hole through a water supplementing pipe, and a switching gear block driven by a driving piece to rotate is arranged in the distribution valve. When the water level of the water tank drops to trigger water inlet of the water inlet valve, the water supplementing pipe serves as an independent pipeline and can supply water to the valve cavity of the distribution valve, water outlet of the water pump can be overlapped at the moment, and the flushing effect of pump flushing is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent toilets, and particularly to a single-pump flushing device and a flushing method for a toilet. Background Art

[0002] In the prior art, for a water pump pressurized flushing toilet, a water pump is used to extract the stored water in the water tank, and after pressurization, it outputs at a certain flow rate to enable the toilet to flush. Its control method is that the water pump starts to perform upper flushing and water replenishment, the scrub head switching valve switches to bottom flushing, the bottom flushing spray waterway is opened to form a siphon, and then the switching valve switches to upper flushing again to replenish the water seal in the ceramic tank. After the water replenishment is completed, the water pump is turned off, that is, the flushing method of upper flushing - bottom flushing - upper flushing. During this process, the inlet valve is only used for water replenishment of the water tank.

[0003] For the above-mentioned pump flushing method, the water pump extracts the stored water in the water tank, pressurizes it and transports it to the ceramic for scrubbing ring water replenishment or bottom spraying. Its effect completely depends on the water pump flow rate and head (power), and the water tank capacity needs to be large to meet the flushing and the final water seal water replenishment. In addition, the water pump extracts the stored water in the water tank and transports it to the switching valve fixed on the scrub head. The switching between upper flushing and bottom spraying is completed through the switching valve. The switching valve is equipped with a stepping motor and a switching mechanism, which is relatively large in volume. Moreover, in order to prevent siphon leakage of the water tank in the section of pipe before the switching valve, a suspended elbow pipe needs to be set, which is not conducive to the compact design of the intelligent toilet seat. Furthermore, when the inlet valve fails, the water in the water tank overflows and can only be drained through the overflow port of the water tank. Therefore, the overflow port needs to be made relatively wide, further squeezing the available space of the intelligent cover plate. Summary of the Invention

[0004] The present invention aims to at least partly solve one of the above technical problems in the related art. For this purpose, the present invention proposes a single-pump flushing device for a toilet.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] The present invention also proposes a flushing method applied to the above single-pump flushing device for a toilet.

[0007] The single-pump flushing device for a toilet according to an embodiment of the first aspect of the present invention includes a water tank, a water inlet valve, a water pump, a distribution valve, a flushing water pipe, a jet water pipe, a water replenishing pipe, and a driving member. The water inlet valve and the water pump are arranged in the water tank. The water inlet valve is provided with a water replenishing hole. The distribution valve has a valve cavity. The distribution valve is provided with a flushing water outlet hole, a jet water outlet hole, a water replenishing inlet, and a main water inlet that are all communicated with the valve cavity. The water outlet of the water pump is communicated with the main water inlet. The water replenishing inlet is communicated with the water replenishing hole through the water replenishing pipe. The flushing water outlet hole is communicated with the flushing nozzle of the toilet through the flushing water pipe. The jet water outlet hole is communicated with the siphon nozzle of the toilet through the jet water pipe. A switching block driven by the driving member to rotate is arranged in the distribution valve. When the switching block rotates to the first position, it can block the jet water outlet hole, and at the same time, the flushing water outlet hole is opened. When the switching block rotates to the second position, it can block the flushing water outlet hole, and at the same time, the jet water outlet hole is opened.

[0008] The single-pump flushing device for a toilet according to an embodiment of the present invention has at least the following beneficial effects:

[0009] 1. The water outlet of the water pump and the water replenishing pipe of the water inlet valve are connected in parallel to the same valve cavity of the distribution valve. When the water level in the water tank drops and triggers the water inlet valve to inlet water, the water replenishing pipe, as an independent pipeline, will supply water to the valve cavity of the distribution valve. At this time, the water outlet of the water pump will be superimposed, enhancing the flushing effect of the pump flush.

[0010] 2. A part of the water inlet by the water inlet valve does not enter the water tank, but enters the valve cavity of the distribution valve through the water replenishing pipe. And the distribution valve is normally in a state where the bottom spray is connected (that is, the jet water outlet hole is opened), and the water will directly flow into the toilet through the jet water pipe, reducing the water replenishing speed of the water tank and slowing down the rising time of the water level in the water tank. In this way, the overflow port of the water tank can be made narrower, reducing the extrusion of the cover plate space.

[0011] 3. The water replenishing pipe can directly replenish water to the water seal of the toilet through the valve cavity of the distribution valve. Therefore, the water pump does not need or less pumps water from the water tank for water seal replenishment. Therefore, the volume of the water tank can be reduced, making space for the cover plate. In addition, the elimination or shortening of the subsequent water replenishment reduces the noise of the entire flushing cycle.

[0012] 4. Since the volume of the water tank is reduced, on the premise that the upper and lower heights remain unchanged, the projected area of the water tank is smaller. When pumping water with a certain flow rate of the water pump, the water level drops faster, and the water inlet valve can be opened faster, improving the utilization rate of tap water in the pipeline for water replenishment and enhancing flushing.

[0013] 5. The distribution valve is connected to the water inlet valve through the water replenishing pipe. When the water inlet valve stops inletting water, air will enter the valve cavity of the distribution valve through the water replenishing pipe, destroying the siphon and preventing the stored water in the water tank from being siphoned away.

[0014] According to some embodiments of the present invention, the driving member is a motor, and the output shaft of the motor is connected to the switching block to drive the switching block to rotate.

[0015] According to some embodiments of the present invention, the distribution valve is fixed on the side wall of the water tank and is located inside the water tank, and the motor is located outside the water tank.

[0016] According to some embodiments of the present invention, the valve body of the distribution valve has opposite first valve wall and second valve wall. An installation hole is formed on the first valve wall, and the output shaft of the motor extends into the valve cavity through the installation hole. The washing water outlet hole and the spraying water outlet hole are formed on the first valve wall. The switching block is in a sheet structure, and its end face can block the washing water outlet hole and the spraying water outlet hole.

[0017] According to some embodiments of the present invention, the water replenishing inlet is arranged on the second valve wall, and the water outlet end of the water replenishing inlet faces the spraying water outlet hole.

[0018] According to some embodiments of the present invention, a backing plate, a connecting sleeve and a spring are arranged in the valve cavity. The backing plate is provided with a first through hole and a second through hole. The washing water outlet hole is docked with the first through hole, and the spraying water outlet hole is docked with the second through hole. One end of the connecting sleeve is connected to the output shaft of the motor, and the other end is slidably connected to the switching block. The switching block can slide along the axial direction of the connecting sleeve. The spring is arranged along the rotation axis of the switching block. One end of the spring abuts against the second valve wall, and the other end abuts against the switching block so that the switching block abuts against the backing plate.

[0019] According to some embodiments of the present invention, the output shaft of the motor is inserted into the shaft hole of the connecting sleeve. The other end of the connecting sleeve is provided with a chute, and the chute is arranged along the axial direction of the connecting sleeve. One end of the switching block forms a receiving cavity, and the inner wall of the receiving cavity is provided with a convex block. The other end of the connecting sleeve is embedded in the receiving cavity, and the convex block is embedded in the chute.

[0020] According to some embodiments of the present invention, the valve body of the distribution valve is cylindrical and has an annular side wall. The rotation center of the switching block is located on the axis of the valve body. The washing water outlet hole and the spraying water outlet hole are formed on the annular side wall, and a water outlet pipe extends out of the outside of the spraying water outlet hole. The water replenishing inlet is formed on the water outlet pipe. One end of the switching block has an arc surface, and the arc surface can abut against the washing water outlet hole and the spraying water outlet hole.

[0021] According to some embodiments of the present invention, the washing water outlet holes and the jet water outlet holes are located at the lower part of the valve body. The washing water pipe and the jet water pipe are connected to the distribution valve in the water tank and then arranged downward along the water tank, and penetrate out from the bottom of the water tank.

[0022] The flushing method according to the second aspect embodiment of the present invention includes the following steps:

[0023] S1: Trigger flushing. The toilet main control board sends a control signal to the driving member, and the driving member drives the switching block to rotate to the first position. At this time, it is the state where the washing water path is connected;

[0024] S2: The water pump starts to wash the toilet bowl. In the latter stage of washing, the water pump extracts the water stored in the water tank, causing the liquid level to drop to a set value, and the inlet valve opens;

[0025] S3: After the washing is completed, the water pump continues to work, and the main control board drives the switching block to rotate to the second position. At this time, it is the state where the bottom spray water path is connected;

[0026] S4: After the jet siphon ends, the water pump continues to work, and the main control board drives the switching block to rotate to the first position. At this time, it is the state where the washing water path is connected, and the water seal part of the toilet bowl is replenished with water;

[0027] S5: The main control board controls the water pump to stop, and the washing water replenishment ends. At the same time, it controls the switching block to rotate to the second position. At this time, the inlet valve is still in the water inlet state, and the water seal of the toilet bowl is replenished with water through the replenishing pipe and the bottom spray water path;

[0028] S6: When the water level in the water tank reaches the set water level of the inlet valve, the inlet valve closes, the water storage in the water tank is completed, and the water seal of the toilet bowl is also filled up.

[0029] Some additional aspects and advantages of the present invention will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1 is the overall assembly drawing of the first embodiment of the present invention;

[0032] Figure 2 is the overall structural schematic diagram of the first embodiment of the present invention;

[0033] Figure 3 is the front view of the distribution valve of the first embodiment of the present invention;

[0034] Figure 4 is the first perspective three-dimensional view of the distribution valve of the first embodiment of the present invention;

[0035] Figure 5 is the second perspective three-dimensional view of the distribution valve according to the first embodiment of the present invention;

[0036] Figure 6 is the internal structure diagram of the distribution valve according to the first embodiment of the present invention;

[0037] Figure 7 is the sectional view of the distribution valve according to the first embodiment of the present invention;

[0038] Figure 8 is the front view of the second embodiment of the present invention;

[0039] Figure 9 is the three-dimensional schematic diagram of the second embodiment of the present invention;

[0040] Figure 10 is the sectional view of the distribution valve according to the second embodiment of the present invention;

[0041] Figure 11 is the water flow direction diagram of the present invention.

[0042] Reference numerals: water tank 100, water inlet valve 200, water pump 300, distribution valve 400, washing water outlet hole 410, spraying water outlet hole 420, water replenishing inlet 430, main water inlet 440, switching block 450, first valve wall 460, second valve wall 461, backing plate 470, first through hole 471, second through hole 472, connecting sleeve 480, spring 490, washing water pipe 500, spraying water pipe 600, water replenishing pipe 700, motor 800, toilet 900, washing nozzle 910, siphon nozzle 920, annular side wall 1000, water outlet connecting pipe 1010, arc surface 1020. Detailed Description of the Embodiment

[0043] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] Refer to Figures 1-11, A single-pump flushing device for a toilet, comprising a water tank 100, a water inlet valve 200, a water pump 300, a distribution valve 400, a flushing water pipe 500, a jet water pipe 600, a make-up water pipe 700 and a driving member. The water tank 100 is arranged on one side of the toilet 900. The water inlet valve 200 and the water pump 300 are arranged inside the water tank 100. The water intake port of the water pump 300 faces downward and is placed at the bottom of the water tank 100. The water inlet valve 200 is provided with a make-up water hole. The distribution valve 400 has a valve cavity inside. The distribution valve 400 is provided with a flushing water outlet hole 410, a jet water outlet hole 420, a make-up water inlet 430 and a main water inlet 440 that are all communicated with the valve cavity. The aperture of the jet water outlet hole 420 is larger than that of the flushing water outlet hole 410. The water outlet of the water pump 300 is communicated with the main water inlet 440. The make-up water inlet 430 is communicated with the make-up water hole through the make-up water pipe 700. The flushing water outlet hole 410 is communicated with the flushing nozzle 910 of the toilet 900 through the flushing water pipe 500. The jet water outlet hole 420 is communicated with the siphon nozzle 920 of the toilet 900 through the jet water pipe 600. A switching block 450 driven by the driving member to rotate is arranged inside the distribution valve 400. When the switching block 450 rotates to the first position, it can block the jet water outlet hole 420, and at the same time the flushing water outlet hole 410 is opened. When the switching block 450 rotates to the second position, it can block the flushing water outlet hole 410, and at the same time the jet water outlet hole 420 is opened. Further, the water output of the make-up water hole of the water inlet valve 200 accounts for 35%-45% of the total water intake of the water inlet valve 200. Under normal conditions, the jet water outlet hole 420 can be controlled to open or the flushing water outlet hole 410 and the jet water outlet hole 420 can be opened simultaneously. If a failure occurs in the water inlet valve 200 and the water intake does not stop, the water tank 100 can be drained from the jet water outlet hole 420, the flushing water outlet hole 410 and the overflow port of the water tank 100. For the small water tank 100, its failure safety is greatly improved.

[0045] In some embodiments of the present invention, the driving member is a motor 800, and the output shaft of the motor 800 is connected to the switching block 450 to drive the switching block 450 to rotate.

[0046] In some embodiments of the present invention, the distribution valve 400 is fixed on the side wall of the water tank 100 and is located inside the water tank 100. The motor 800 is located outside the water tank 100. The distribution valve 400 is arranged inside the water tank 100 to utilize the space of the water tank 100 that the original intelligent cover plate could not utilize. Only the flushing water pipe 500 and the jet water pipe 600 are left outside the water tank 100, leaving enough space for the intelligent cover plate, and the components of the water tank 100 are modularized.

[0047] In some embodiments of the present invention, refer to Figures 4-7The valve body of the distribution valve 400 has a first valve wall 460 and a second valve wall 461 opposite to each other. A mounting hole is provided on the first valve wall 460. The output shaft of the motor 800 extends into the valve cavity from the mounting hole. The washing water outlet hole 410 and the jet water outlet hole 420 are provided on the first valve wall 460. The switching block 450 is a sheet-like structure, and its end face can block the washing water outlet hole 410 and the jet water outlet hole 420. The replenishing water from the water inlet valve 200 enters the valve cavity. The water volume and pressure of the water outlet from the replenishing water pipe 700 are superimposed on the bottom spray water path, increasing the flow rate and enhancing the siphon. The water level height at the moment of starting the siphon is superimposed on the washing water path, which increases the water level height at the moment of starting the siphon and generates greater potential energy. The washing water pipe 500 and the jet water pipe 600 are located outside the water tank 100. The entire device has only two pipes to the outside, which are connected to the washing nozzle 910 and the siphon nozzle 920 respectively. There are few external pipes, which is convenient for product design layout.

[0048] In some embodiments of the present invention, the water replenishment inlet 430 is provided on the second valve wall 461, and the water outlet of the water replenishment inlet 430 is directly opposite to the water jet outlet hole 420. Further, the water replenishment inlet 430 is a long hole structure, the water inlet end of which is connected to the water replenishment pipe 700, and the water outlet end is directly opposite to the water jet outlet hole 420. The water outlet of the water replenishment inlet 430 can enter the water jetting path at the first time and with less loss, and when the water flow is ejected at a high speed, the Venturi effect generated will accelerate the water in the valve cavity to flow out from the water jet outlet hole 420.

[0049] In some embodiments of the present invention, a backing plate 470, a connecting sleeve 480 and a spring 490 are provided in the valve cavity, a first through hole 471 and a second through hole 472 are provided on the backing plate 470, the washing water outlet 410 is connected to the first through hole 471, and the spraying water outlet 420 is connected to the second through hole 472, one end of the connecting sleeve 480 is connected to the output shaft of the motor 800, and the other end is slidably connected to the switching block 450, and the switching block 450 can slide along the axial direction of the connecting sleeve 480, and the spring 490 is arranged along the rotation axis of the switching block 450, one end of the spring 490 abuts against the second valve wall 461, and the other end abuts against the switching block 450 so that the switching block 450 abuts against the backing plate 470. The backing plate 470 is fixed in the valve cavity, and the switching block 450 always abuts against the backing plate 470 under the action of the spring 490, so as to ensure that the switching block 450 effectively blocks the washing water outlet 410 or the spraying water outlet 420.

[0050] In some embodiments of the present invention, the output shaft of the motor 800 is inserted into the shaft hole of the connecting sleeve 480. The other end of the connecting sleeve 480 is provided with a chute, and the chute is arranged along the axial direction of the connecting sleeve 480. One end of the switching block 450 forms a receiving cavity, and the inner wall of the receiving cavity is provided with a convex block. The other end of the connecting sleeve 480 is embedded in the receiving cavity, and the convex block is embedded in the chute. The output shaft of the motor 800 drives the switching block 450 to rotate through the connecting sleeve 480. The connection between the convex block and the chute enables the switching block 450 to rotate with the connecting sleeve 480 and can also abut against the backing plate 470 under the action of the spring 490.

[0051] In some embodiments of the present invention, referring to Figures 8-10 , the valve body of the distribution valve 400 is cylindrical and has an annular side wall 1000. The rotation center of the switching block 450 is located on the axis of the valve body. The washing water outlet hole 410 and the spraying water outlet hole 420 are opened on the annular side wall 1000, and a water outlet connecting pipe 1010 extends out on the outside of the spraying water outlet hole 420. The water replenishing inlet 430 is opened on the water outlet connecting pipe 1010. One end of the switching block 450 has an arc surface 1020, and the arc surface 1020 can abut against the washing water outlet hole 410 and the spraying water outlet hole 420. The radian of the arc surface 1020 is adapted to the radian of the annular side wall 1000, and the arc surface 1020 of the switching block 450 is used to tightly seal the washing water outlet hole 410 or the spraying water outlet hole 420.

[0052] In some embodiments of the present invention, the washing water outlet hole 410 and the spraying water outlet hole 420 are located at the lower part of the valve body. After the washing water pipe 500 and the spraying water pipe 600 are connected to the distribution valve 400 in the water tank 100, they are arranged downward along the water tank 100 and penetrate out from the bottom of the water tank 100. In this embodiment, the water outlet pipes are arranged at the lower part. The washing water outlet hole 410 and the spraying water outlet hole 420 are both arranged downward inside the water tank 100. The washing water pipe 500 and the spraying water pipe 600 extend to the bottom inside the water tank 100 and then are connected to the external pipes outward from the bottom, simplifying the external pipeline and further freeing up the space in the upper part of the water tank 100, especially the space in the cover plate area.

[0053] A flushing method based on the above-mentioned single-pump flushing device for a toilet includes the following steps:

[0054] S1: Trigger flushing. The main control board of the toilet 900 sends a control signal to the motor 800, and the motor 800 drives the switching block 450 to rotate to the first position. At this time, it is the state where the washing water circuit is connected.

[0055] S2: After step S1 is triggered, approximately 1 second later, the water pump 300 starts to wash the toilet bowl. At the later stage of the washing, the water pump 300 extracts the stored water in the water tank 100, causing the liquid level to drop to the set value, and then the water inlet valve 200 opens. After the water inlet valve 200 opens, tap water flows out from two places through the water inlet valve 200, namely the main water outlet path and the secondary water outlet path. The water flowing out from the main water outlet path enters the water tank 100 through the bottom of the water inlet valve 200 to replenish the stored water in the water tank 100. The water flowing out from the secondary water outlet path enters the valve cavity of the distribution valve 400 through the water replenishing pipe 700, and the water flowing out from this path is superimposed on the flushing function of the toilet 900.

[0056] S3: After the washing is completed, the water pump 300 continues to work. The main control board drives the switching block 450 to rotate to the second position. At this time, it is the state where the bottom water spray path is connected. The water pump 300 extracts the stored water in the water tank 100 and sprays it out from the siphon nozzle 920 at the bottom of the toilet bowl. At the same time, the water flowing out from the secondary water outlet path of the water inlet valve 200 enters the valve cavity and is superimposed on the water flowing out from the water pump 300 to enhance the bottom spraying force and flow rate, triggering siphon to wash away the dirt.

[0057] S4: After the spraying and siphoning are completed, the water pump 300 continues to work. The main control board drives the switching block 450 to rotate to the first position. At this time, it is the state where the washing water path is connected. The water pump 300 extracts the stored water in the water tank 100, and the water flowing out from the secondary water outlet path of the water inlet valve 200 is superimposed to replenish the water seal of the toilet bowl.

[0058] S5: The main control board controls the water pump 300 to stop, and the washing water replenishment ends. At the same time, it controls the switching block 450 to rotate to the second position. At this time, the water inlet valve 200 is still in the water inlet state, and the water flowing out from its secondary water outlet path enters the valve cavity and enters the bottom water seal of the toilet bowl through the connected bottom water spray path. The insufficient water volume of the water seal is replenished by the water inlet valve 200.

[0059] S6: As the water inlet of the water inlet valve 200 continues, the water level in the water tank 100 continuously rises. When the water level in the water tank 100 reaches the set water level of the water inlet valve 200, the water inlet valve 200 closes, the water storage in the water tank 100 is completed, and the water seal of the toilet bowl is also filled up.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A toilet single pump flushing device, characterized in that: The invention comprises a water tank (100), a water inlet valve (200), a water pump (300), a distribution valve (400), a washing water pipe (500), a jet water pipe (600), a water replenishment pipe (700) and a driving member, wherein the water inlet valve (200) and the water pump (300) are arranged in the water tank (100), the water inlet valve (200) is provided with a water replenishment hole, the distribution valve (400) has a valve cavity, the distribution valve (400) is provided with a washing water outlet hole (410), a jet water outlet hole (420), a water replenishment inlet (430) and a main water inlet (440) which are all connected to the valve cavity, the water outlet of the water pump (300) is connected to the main water inlet (440), the water replenishment inlet (430) is connected to the main water inlet (440) through the water replenishment pipe (700) is connected to the water replenishment hole, the washing water outlet hole (410) is connected to the washing nozzle (910) of the toilet (900) through the washing water pipe (500), and the jet water outlet hole (420) is connected to the siphon nozzle (920) of the toilet (900) through the jet water pipe (600). The distribution valve (400) is provided with a switching block (450) driven to rotate by the driving member. When the switching block (450) rotates to the first position, it can block the jet water outlet hole (420) and the washing water outlet hole (410) is opened at the same time. When the switching block (450) rotates to the second position, it can block the washing water outlet hole (410) and the jet water outlet hole (420) is opened at the same time.

2. The toilet single pump flushing device according to claim 1, characterized in that: The driving member is a motor (800), and an output shaft of the motor (800) is connected to the switching block (450) to drive the switching block (450) to rotate.

3. The toilet single pump flushing device according to claim 2, characterized in that: The distribution valve (400) is fixed on the side wall of the water tank (100) and is located inside the water tank (100), and the motor (800) is located outside the water tank (100).

4. The toilet single pump flushing device according to claim 3, characterized in that: The valve body of the distribution valve (400) comprises a first valve wall (460) and a second valve wall (461) which are opposite to each other. A mounting hole is provided on the first valve wall (460), and the output shaft of the motor (800) extends from the mounting hole into the valve cavity. The washing water outlet hole (410) and the spray water outlet hole (420) are provided on the first valve wall (460). The switching block (450) is a sheet-like structure, and its end face can block the washing water outlet hole (410) and the spray water outlet hole (420).

5. The toilet single pump flushing device according to claim 4, characterized in that: The water replenishment inlet (430) is arranged on the second valve wall (461), and the water outlet end of the water replenishment inlet (430) faces the water jet outlet hole (420).

6. The toilet single pump flushing device according to claim 4, characterized in that: A backing plate (470), a connecting sleeve (480) and a spring (490) are provided in the valve cavity. A first through hole (471) and a second through hole (472) are provided on the backing plate (470). The washing water outlet hole (410) is connected to the first through hole (471), and the spraying water outlet hole (420) is connected to the second through hole (472). One end of the connecting sleeve (480) is connected to the output shaft of the motor (800), and the other end is slidably connected to the switching block (450). The switching block (450) can slide along the axial direction of the connecting sleeve (480). The spring (490) is arranged along the rotation axis of the switching block (450). One end of the spring (490) abuts against the second valve wall (461), and the other end abuts against the switching block (450) so that the switching block (450) abuts against the backing plate (470).

7. The toilet single pump flushing device according to claim 6, characterized in that: The output shaft of the motor (800) is inserted into the axial hole of the connecting sleeve (480), the other end of the connecting sleeve (480) is provided with a slide groove, and the slide groove is arranged along the axial direction of the connecting sleeve (480), one end of the switching block (450) is formed with a receiving cavity, the inner wall of the receiving cavity is provided with a protrusion, the other end of the connecting sleeve (480) is embedded in the receiving cavity, and the protrusion is embedded in the slide groove.

8. The toilet single-pump flushing device according to claim 3, characterized in that: The valve body of the distribution valve (400) is cylindrical and has an annular side wall (1000). The rotation center of the switching block (450) is located on the axis of the valve body. The washing water outlet hole (410) and the spray water outlet hole (420) are provided on the annular side wall (1000), and a water outlet pipe (1010) extends from the outside of the spray water outlet hole (420). The water replenishment inlet (430) is provided on the water outlet pipe (1010). One end of the switching block (450) has an arc surface (1020), and the arc surface (1020) can abut against the washing water outlet hole (410) and the spray water outlet hole (420).

9. The toilet single-pump flushing device according to claim 7, characterized in that: The washing water outlet hole (410) and the spraying water outlet hole (420) are located at the lower part of the valve body; the washing water pipe (500) and the spraying water pipe (600) are connected to the distribution valve (400) in the water tank (100), are arranged downward along the water tank (100), and pass through the bottom of the water tank (100).

10. A flushing method, characterized in that: The single-pump flushing device for a toilet as claimed in any one of claims 1 to 9 comprises the following steps: S1: trigger flushing, the toilet (900) main control board sends a control signal to the driving member, and the driving member drives the switching block (450) to rotate to the first position, at which time the flushing water path is connected; S2: The water pump (300) is started to clean the toilet bowl. In the latter stage of the cleaning, the water pump (300) draws water from the water tank (100) to cause the liquid level to drop to a set value, and the water inlet valve (200) is opened; S3: After the washing is completed, the water pump (300) keeps working, and the main control board drives the switching block (450) to rotate to the second position, at which time the bottom spray water path is connected; S4: After the jet siphon is finished, the water pump (300) keeps working, and the main control board drives the switching block (450) to rotate to the first position, at which time the washing water channel is connected, and water is replenished to the water seal part of the toilet bowl; S5: The main control board controls the water pump (300) to stop, and the washing and water replenishment is completed. At the same time, the switching block (450) is controlled to rotate to the second position. At this time, the water inlet valve (200) is still in the water intake state, and the toilet water seal is replenished with water through the water replenishment pipe (700) and the bottom spray water path; S6: When the water level in the water tank (100) reaches the water level set by the water inlet valve (200), the water inlet valve (200) is closed, the water storage in the water tank (100) is completed, and the toilet bowl water seal is also filled.

Images