Intelligent toilet flushing device

Abstract

The application discloses a kind of intelligent toilet flushing device, belongs to the technical field of bathroom supplies, including valve body, the inside of valve body is equipped with water inlet cavity and water outlet cavity, front end cover is combined with main valve module, the rear of valve body is equipped with rear end cover, and rear end cover is installed with stepper motor, and stepper motor's output shaft is connected with water distribution pivot, the side of valve body is equipped with mounting hole, and the installation hole is installed with pilot valve module, and the pilot valve module includes pilot valve cover and pilot valve swing rod, the rear end of pilot valve swing rod is equipped with water stop rubber sleeve, and the rear of water stop rubber sleeve is equipped with pilot valve spring.The sealing performance of this flushing device is high, the volume is reduced, and it is more convenient to install.The newly invented swing rod type pilot valve and water distribution block linkage mechanism are used to control the opening and closing of the main valve and the simultaneous flushing of the two water outlets, which is simple and ingenious, reliable in sealing, can reduce the failure rate of the flushing valve, and improve the use reliability of the intelligent toilet.

Description

Technical Field

[0001] This invention belongs to the field of bathroom products technology, specifically relating to an intelligent toilet flushing device. Background Technology

[0002] Currently, the flushing devices of tankless smart toilets on the market mainly use pulse electromagnetic flushing valves, which are composed of an inlet valve body and two outlet valve bodies. The outlet valve bodies are controlled by pulse electromagnetic valves to open and close, and combined with circuit control, realize the flushing function of the smart toilet. For example, Chinese invention patent with patent number CN108661138A, publication date of 2018.10.16, entitled "A Pulse Electromagnetic Valve Flushing Device", describes this kind of dual-water-path pulse electromagnetic valve flushing device.

[0003] The following disadvantages exist in this type of pulse solenoid valve flushing device: 1. The valve group is assembled from three valve bodies, which are large in size and have a low structural utilization rate. Leakage is likely to occur at the connection points under high pressure. 2. The pulse solenoid valve is easily affected by water quality and water pressure changes, resulting in malfunctions such as inability to open or close, and abnormal noise. To address this, we propose a smart toilet flushing device with a single valve body, using a stepper motor to drive a rocker-type pilot valve and a water distribution baffle linkage mechanism to control the opening and closing of the main valve and the timed flushing of the two water outlets. Summary of the Invention

[0004] The main objective of this invention is to provide an intelligent toilet flushing device, which features a compact structure, reliable operation, and long service life.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A smart toilet flushing device includes a valve body. One side of the valve body has an upward flushing outlet, and the bottom of the valve body has a downward flushing outlet. An inlet is located in front of the adjacent downward flushing outlet. The valve body has an inlet chamber and an outlet chamber, both of which are connected to the inlet and the upward flushing outlet. The front of the valve body has a front cover, inside which a main valve module is housed. The rear of the valve body has a rear cover, on which a stepper motor is mounted. The output shaft of the stepper motor is connected to a water distribution shaft, which passes through the valve body. A vacuum breaker is located at the top of the valve body. One side of the valve body has a mounting hole, at which a pilot valve module is installed. The pilot valve module includes a pilot valve cover and a pilot valve lever. A water-stop sleeve is fitted to the rear end of the pilot valve lever, and a pilot valve spring is located at the rear of the water-stop sleeve. One end of the pilot valve spring is embedded in the pilot valve cover, and the front end of the pilot valve lever engages with a cam on the water distribution shaft.

[0007] Preferably, the main valve module includes a diaphragm support and a main valve spring. The main valve diaphragm is provided on one side of the diaphragm support, and the main valve spring is provided on the other side of the diaphragm support and fixed by the front end cover, so that a balance cavity is formed between the main valve diaphragm and the front end cover.

[0008] Preferably, the valve body has a flow guide channel on its outer side, one end of which is connected to the mounting hole. The front end cover has a connector on its front side, and a sealing ring is provided on the connector. The other end of the flow guide channel is sealed to the connector on the front end cover through the sealing ring. The other end of the connector extends into the interior of the front end cover to form a flow guide hole, which is connected to the balance chamber.

[0009] Preferably, the diaphragm support has a connector protruding outward on its edge, and the connector has a throttling hole inside. The connector passes through the main valve diaphragm and communicates with the water inlet chamber.

[0010] Preferably, the top of the valve body is provided with an assembly port, and a pressure cap is provided on the assembly port. The vacuum breaker is located in the assembly port and fixed by the pressure cap.

[0011] Preferably, a water-dividing baffle is movably connected to one side of the water-dividing shaft.

[0012] Preferably, a washing water interface is provided on the outside of the water inlet.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Compared with traditional pulse-type electromagnetic flushing valves, this flushing device has higher sealing performance, smaller size, and is easier to install;

[0015] 2. This invention abandons the traditional pulse solenoid valve and adopts a newly invented swing rod pilot valve and water diversion block linkage mechanism to control the opening and closing of the main valve and the timed flushing of the two water outlets. It is simple, ingenious, and reliably sealed, which can reduce the failure rate of the flush valve and improve the reliability of the smart toilet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is an exploded view of the structure of the present invention;

[0018] Figure 3 This is the front view of the present invention;

[0019] Figure 4 For the present invention Figure 3 CC-direction cross-section;

[0020] Figure 5 For the present invention Figure 3 DD direction cross section view;

[0021] Figure 6 This is the rear front view of the present invention;

[0022] Figure 7 This is a schematic diagram of the internal structure of the front cover of the present invention;

[0023] Figure 8 This is a cross-sectional view of the initial state of the present invention;

[0024] Figure 9 This is a cross-sectional view of the water flushing state of the present invention;

[0025] Figure 10 This is a cross-sectional view of the flushing state of the present invention.

[0026] In the diagram: 1. Valve body; 2. Upper flush outlet; 3. Lower flush outlet; 4. Inlet; 5. Wash water interface; 6. Inlet chamber; 7. Outlet chamber; 8. Front cover; 9. Rear cover; 10. Stepper motor; 11. Water distribution shaft; 12. Water distribution baffle; 13. Vacuum breaker; 14. Mounting hole; 15. Pilot valve cover; 16. Pilot valve lever; 17. Water-stop sleeve; 18. Pilot valve spring; 19. Flow guide channel; 20. Connector; 21. Flow guide hole; 22. Sealing ring; 23. Diaphragm support; 24. Main valve spring; 25. Main valve diaphragm; 26. Balance chamber; 27. Throttling orifice; 28. Assembly port; 29. ​​Pressure cap. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] like Figure 1-10As shown, an embodiment of the intelligent toilet flushing device in this solution includes a valve body 1. One side of the valve body 1 has an upward flushing outlet 2, and the bottom of the valve body 1 has a downward flushing outlet 3. An inlet 4 is located in front of the adjacent downward flushing outlet 3, and a washing water interface 5 is located outside the inlet 4. The valve body 1 has an inlet chamber 6 and an outlet chamber 7 inside, both of which are connected to the inlet 4 and the upward flushing outlet 2. The front of the valve body 1 has a front cover 8, which houses the main valve module. The rear of the valve body 1 has a rear cover 9, on which a stepper motor 10 is mounted. The output shaft is connected to a water distribution shaft 11. A water distribution block 12 is movably connected to one side of the water distribution shaft 11. The water distribution shaft 11 passes through the valve body 1. A vacuum breaker 13 is provided on the top of the valve body 1. A mounting hole 14 is provided on one side of the valve body 1. A pilot valve module is installed at the mounting hole 14. The pilot valve module includes a pilot valve cover 15 and a pilot valve lever 16. A water-stop rubber sleeve 17 is sleeved on the rear end of the pilot valve lever 16. A pilot valve spring 18 is provided at the rear of the water-stop rubber sleeve 17. One end of the pilot valve spring 18 is embedded in the pilot valve cover 15. The front end of the pilot valve lever 16 cooperates with a cam on the water distribution shaft 11.

[0029] In this embodiment, the main valve module includes a diaphragm support 23 and a main valve spring 24. A main valve diaphragm 25 is provided on one side of the diaphragm support 23, and the main valve spring 24 is provided on the other side of the diaphragm support 23 and is fixed by the front end cover 8, thereby forming a balance chamber 26 between the main valve diaphragm 25 and the front end cover 8. A connector is provided on the edge of the diaphragm support 23, and a throttling hole 27 is provided inside the connector. The connector passes through the main valve diaphragm 25 and communicates with the water inlet chamber 6.

[0030] In this embodiment, a flow guide channel 19 is provided on the outer side of the valve body 1. One end of the flow guide channel 19 is connected to the mounting hole 14. A connector 20 is provided on the front side of the front cover 8. A sealing ring 22 is provided on the connector 20. The other end of the flow guide channel 19 is sealed to the connector 20 on the front cover 8 through the sealing ring 22. The other end of the connector 20 extends into the interior of the front cover 8 to form a flow guide hole 21. The flow guide hole 21 is connected to the balance chamber 26.

[0031] In this embodiment, the valve body 1 has an assembly port 28 at its top, and a pressure cap 29 is provided on the assembly port 28. The vacuum breaker 13 is disposed in the assembly port 28 and fixed by the pressure cap 29. The vacuum breaker 13 is a known component in the prior art, and its function is to prevent sewage from flowing back into the water supply pipeline, which will not be described in detail here.

[0032] By adopting the above technical solution, the present invention uses a stepper motor 10 to drive the water distribution shaft 11, which drives the water distribution slider to rotate and controls the flushing of the upper and lower water outlets. At the same time, the cam on the water distribution shaft 11 pushes the pilot valve lever 16 to swing, controlling the opening and closing of the pilot valve, and then controlling the opening and closing of the main valve diaphragm 25, thereby realizing the upper and lower flushing control of the flushing valve.

[0033] In the initial state, the pilot valve lever 16 is vertically downward, and the water-stop rubber sleeve 17 on the pilot valve lever 16 presses against the mounting hole 14, and the pilot valve is closed. At this time, the water pressure in the balance chamber 26 inside the main valve body 1 is equal to the pressure in the inlet chamber 6. The force-bearing area on the right side of the main valve diaphragm 25 is greater than the force-bearing area on the left side. Under the action of water pressure, the main valve diaphragm 25 presses against the main valve outlet hole, and the flushing valve is in the closed state.

[0034] When flushing begins, the stepper motor 10 first drives the water distribution shaft 11 and the water distribution baffle 12 to rotate 90 degrees counterclockwise and pauses for about 5 seconds. At this time, the cam on the water distribution shaft 11 drives the pilot valve lever 16 to swing about 9 degrees, opening the pilot valve. Tap water enters the outlet chamber 7 through the throttling orifice 27, guide orifice 21, and pilot orifice on the main valve diaphragm 25. The water pressure in the balance chamber 26 decreases, and the main valve diaphragm 25 moves to the right, opening the main valve. Tap water enters the outlet chamber 7 from the inlet chamber 6. At the same time, the water distribution baffle 12 rotates to the position blocking the lower flush outlet 3, blocking the water flow so that the water can only be sprayed out through the upper flush outlet 2, thus realizing the upper flushing function. Then, the stepper motor 10 continues to drive the water distribution shaft 11 and the water distribution baffle 12 to rotate 90 degrees counterclockwise again and pauses for about 5 seconds. At this time, the pilot valve is still in the open state, and the main valve is open. The water distribution baffle 12 rotates to block the upper flush outlet 2, preventing water from flowing out and allowing water to spray only through the lower flush outlet 3, thus achieving the lower flushing function. Then, the stepper motor 10 drives the water distribution shaft 11 and the water distribution baffle 12 to rotate 90 degrees clockwise and pauses for about 5 seconds. At this time, the pilot valve remains open, the main valve opens, and the water distribution baffle 12 rotates to block the lower flush outlet 3, preventing water from flowing out and allowing water to spray only through the upper flush outlet 2, thus achieving the water replenishment function. Finally, the stepper motor 10 drives the water distribution shaft 11 and the water distribution baffle 12 to rotate 90 degrees clockwise again, returning to the initial position. The pilot valve is closed, the water pressure in the balance chamber 26 increases, and the main valve diaphragm 25 moves to the left under the action of the spring, closing the main valve and stopping the flushing. Thus, the flushing valve completes one flushing cycle.

[0035] Any aspects of this invention not described in detail are well-known to those skilled in the art.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A smart toilet flushing device, comprising a valve body (1), one side of the valve body (1) is provided with an upper flushing water outlet (2), the bottom of the valve body (1) is provided with a lower flushing water outlet (3), the front side adjacent to the lower flushing water outlet (3) is provided with a water inlet (4), the inside of the valve body (1) is provided with a water inlet cavity (6) and a water outlet cavity (7), the water inlet cavity (6) and the water outlet cavity (7) are both communicated with the water inlet (4) and the upper flushing water outlet (2), characterized in that: The front part of the valve body (1) is provided with a front end cover (8), the main valve module is covered in the front end cover (8), the rear part of the valve body (1) is provided with a rear end cover (9), the stepping motor (10) is installed on the rear end cover (9), the output shaft of the stepping motor (10) is connected with the water distribution rotating shaft (11), the water distribution rotating shaft (11) is arranged in the valve body (1), the top of the valve body (1) is provided with a vacuum breaker (13), one side of the valve body (1) is provided with a mounting hole (14), the pilot valve module is installed at the mounting hole (14), the pilot valve module comprises a pilot valve cover (15) and a pilot valve swing rod (16), the rear end of the pilot valve swing rod (16) is sleeved with a water stop rubber sleeve (17), the rear part of the water stop rubber sleeve (17) is provided with a pilot valve spring (18), one end of the pilot valve spring (18) is embedded in the pilot valve cover (15), the front end of the pilot valve swing rod (16) is matched with the cam on the water distribution rotating shaft (11), the main valve module comprises a diaphragm support (23) and a main valve spring (24), one side of the diaphragm support (23) is provided with a main valve diaphragm (25), the main valve spring (24) is arranged on the other side of the diaphragm support (23), and is fixed through the front end cover (8), so that a balance cavity (26) is formed between the main valve diaphragm (25) and the front end cover (8), one side of the outer part of the valve body (1) is provided with a flow guide channel (19), one end of the flow guide channel (19) is communicated with the mounting hole (14), the front side of the front end cover (8) is provided with a butt joint (20), the butt joint (20) is provided with a sealing ring (22), the other end of the flow guide channel (19) is sealingly connected with the butt joint (20) on the front end cover (8) through the sealing ring (22), the other end of the butt joint (20) extends to the inside of the front end cover (8) to form a flow guide hole (21), the flow guide hole (21) is communicated with the balance cavity (26), the edge of the diaphragm support (23) is outwardly protruded with a joint, the inside of the joint is provided with a throttling hole (27), the joint is communicated with the water inlet cavity (6) through the main valve diaphragm (25).

2. The intelligent toilet flushing device according to claim 1, characterized in that: The top of the valve body (1) is provided with an assembly opening (28), the assembly opening (28) is provided with a gland (29), the vacuum breaker (13) is arranged in the assembly opening (28) and is fixed by the gland (29).

3. The intelligent toilet flushing device according to claim 1, characterized in that: The water distribution stop block (12) is movably connected to one side of the water distribution rotating shaft (11).

4. The intelligent toilet flushing device according to claim 1, characterized in that: The outside of the water inlet (4) is provided with a cleaning water interface (5).

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