Drainage control mechanism of pressure type flushing system

Abstract

The invention discloses a drainage control mechanism of a pressure type flushing system, which can have electric control and mechanical control modes and comprises a first pressure bag, a second pressure bag, a first electromagnetic valve, a second electromagnetic valve, a communication assembly and an opening valve, the first pressure bag is provided with a first drainage structure, and the second pressure bag is provided with a second drainage structure. The first electromagnetic valve opens and closes a first drain opening of the first drainage structure; the second electromagnetic valve opens and closes a second drain opening of the second drainage structure; a movable cavity and a two-way non-return ball movably matched in the movable cavity are arranged in the communicating assembly; a first water passing opening and a second water passing opening are formed in the two axial ends of the movable cavity, and a water outlet is formed in the side face. The first water passing port and the second water passing port are respectively communicated with a first backpressure cavity of the first drainage structure and a second backpressure cavity of the second drainage structure, and the bidirectional check ball moves between the first water passing port and the second water passing port along with the pressure change of the first backpressure cavity and the second backpressure cavity; the opening valve mechanically opens and closes the water outlet.

Description

Technical Field

[0001] The present invention belongs to the technical field of pressure-type flushing systems, and in particular relates to a drainage control mechanism of a pressure-type flushing system. Background Art

[0002] The pressure flushing system is a sanitary ware flushing technology that mainly uses compressed air to enhance the force of water flow. It is commonly found in toilets and other bathroom equipment. Its core is to quickly release water flow through pressure to improve flushing efficiency and cleaning effects. It has the characteristics of high water efficiency, anti-clogging, wide applicability, and strong hygiene. It is especially suitable for areas with scarce water resources and insufficient water pressure.

[0003] Pressure-type flushing systems typically utilize a structure similar to a pilot valve to achieve drainage. For example, the utility model patent CN216920583U discloses a "pressure bag drainage system," which includes a pressure bag body and a drainage structure. The drainage structure includes a chamber and a diaphragm. The chamber is provided with a drain port, a water inlet, and a drain pipe. The diaphragm flexibly engages within the chamber to separate the chamber into a back-pressure chamber and a drainage chamber, and is provided with a water supply hole connecting the back-pressure chamber and the drainage chamber. The drain port connects to the back-pressure chamber, while the water inlet and drain pipe connect to the drainage chamber. The pressure bag body is provided with a water storage chamber, which is connected to the water inlet. When the water storage chamber is supplied with water, water enters the drainage chamber and enters the back-pressure chamber through the water supply hole, increasing the pressure in the back-pressure chamber. When the drain port is opened, the back-pressure chamber drains water, reducing the pressure. The diaphragm moves closer to or further away from the drain pipe as the back-pressure chamber pressure changes, thereby blocking or opening the drain pipe. This simplifies the drainage method of the pressure-type flushing system, ensuring that the drainage structure is not affected by changes in water supply pressure and flow, and ensuring stable drainage. At the same time, there are usually two control methods for existing pressure flushing systems: one is to use a solenoid valve to control the opening and closing of the back pressure chamber drain port to achieve electrical control, and convenient remote control can be achieved in conjunction with the sending and receiving of electrical signals; the other is to use an opening valve to control the opening and closing of the back pressure chamber drain port to achieve pure mechanical control, which does not require electricity and has a more stable function. For example, the utility model patent CN210562475U disclosed in "An opening valve for a pressure flushing system and a toilet using the opening valve" realizes this function.

[0004] Currently, toilet drainage is typically divided into two routes: the upper route forms the wash ring water path, and the lower route forms the main flush (also known as bottom flush) water path. To avoid complex waterway connections and control, at least two pressure packs are required, each connected to the toilet's upper and lower routes. If the product also requires both electrical and mechanical control, at least two sets of solenoid valves and opening valves are required, which also complicates the pressure flush system's waterway connections. Furthermore, unlike two solenoid valves, which can be programmed to open and close simultaneously with a single button, using two opening valves to control the drainage of two pressure packs separately requires a certain learning curve and introduces operational inconvenience. Summary of the Invention

[0005] The main purpose of the present invention is to provide a drainage control mechanism for a pressure-type flushing system to solve the problems existing in the prior art. It can have two control modes: electrical control and mechanical control, and has a simplified structure and convenient operation.

[0006] In order to achieve the above object, the solution of the present invention is: A drainage control mechanism of a pressure-type flushing system comprises a first pressure bag, a second pressure bag, a first solenoid valve, a second solenoid valve, a connecting component and an opening valve; the first pressure bag is provided with a first drainage structure, and the second pressure bag is provided with a second drainage structure; the first solenoid valve is used to open and close the first drain port of the first drainage structure; the second solenoid valve is used to open and close the second drain port of the second drainage structure; a movable chamber and a two-way check ball that is movably fitted in the movable chamber are provided in the connecting component; a first water port and a second water port are provided at both axial ends of the movable chamber, and a water outlet is provided on its side; the first water port and the second water port are respectively connected to the first back pressure chamber of the first drainage structure and the second back pressure chamber of the second drainage structure, and the two-way check ball moves between the first water port and the second water port as the pressure of the first back pressure chamber and the second back pressure chamber changes; the opening valve is used to mechanically open and close the water outlet.

[0007] An annular groove is provided between the axial ends of the bidirectional check ball, and the annular groove is opposite to the water outlet in a normal state.

[0008] The drainage control mechanism of the pressure-type flushing system further includes a pressure-stabilizing valve connected to a water source; the pressure-stabilizing valve is simultaneously connected to the water inlet ends of the first pressure bag and the second pressure bag.

[0009] Preferably, the water outlet end of the pressure-stabilizing valve is provided with a three-way pipe; the water inlet ends of the first pressure bag and the second pressure bag are respectively provided with a first water inlet and air intake structure and a second water inlet and air intake structure, and the two outlets of the three-way pipe are respectively connected to the fluid inlets of the first water inlet and air intake structure and the second water inlet and air intake structure.

[0010] The drainage control mechanism of the pressure-type flushing system further includes a water outlet box; the water outlet box is communicated with the first drainage pipe of the first drainage structure and the second drainage pipe of the second drainage structure respectively.

[0011] Preferably, the water outlet box includes a water outlet box lower body, a water outlet box upper body and a water outlet box cover; the water outlet box lower body is provided with a first water passage chamber and a second water passage chamber that are not connected, and a first inlet and a first outlet connected to the first water passage chamber, and a second inlet and a second outlet connected to the second water passage chamber; the first inlet is connected to the first drain pipe of the first drainage structure, and the first outlet is connected to the wash ring water path of the toilet; the second inlet is connected to the second drain pipe of the second drainage structure, and the second outlet is connected to the main flushing water path of the toilet; the water outlet box upper body is covered on the water outlet box lower body, and is provided with a third water passage chamber, and the bottom of the third water passage chamber is provided with two through holes connected to the first water passage chamber and the second water passage chamber respectively; the water outlet box upper cover is covered on the water outlet box upper body, and is provided with an air hole connected to the atmosphere.

[0012] Preferably, the connecting component is further provided with a water passage, which is a three-way water channel, respectively connected to the first back pressure chamber of the first drainage structure, the second back pressure chamber of the second drainage structure and the third water passage chamber.

[0013] The first drainage structure includes a first cavity and a first diaphragm; the first cavity is provided with a first drain port and a first drain pipe; the first diaphragm movably cooperates in the first cavity to separate the first cavity into a first back pressure cavity and a first drainage cavity, and is provided with a first water replenishment hole connecting the first back pressure cavity and the first drainage cavity; the first drain port is connected to the first back pressure cavity, and the first pressure bag and the first drain pipe are both connected to the first drainage cavity; when the first pressure bag supplies water, water enters the first drainage cavity and enters the first back pressure cavity through the first water replenishment hole, and the pressure in the first back pressure cavity increases; when the first drain port is opened, the first back pressure cavity discharges water to reduce the pressure, and the first diaphragm moves closer to or away from the first drain pipe as the pressure in the first back pressure cavity changes to block or open the first drain pipe.

[0014] The second drainage structure includes a second chamber and a second diaphragm; the second chamber is provided with a second drain port and a second drain pipe; the second diaphragm movably cooperates in the second chamber to separate the second chamber into a second back pressure chamber and a second drainage chamber, and is provided with a second water supply hole connecting the second back pressure chamber and the second drainage chamber; the second drain port is connected to the second back pressure chamber, and the second pressure bag and the second drain pipe are both connected to the second drainage chamber; when the second pressure bag supplies water, water enters the second drainage chamber and enters the second back pressure chamber through the second water supply hole, and the pressure in the second back pressure chamber increases; when the second drain port is opened, the second back pressure chamber drains water to reduce the pressure, and the second diaphragm moves closer to or away from the second drain pipe as the pressure in the second back pressure chamber changes to block or open the second drain pipe.

[0015] The first drainage structure and the second drainage structure are respectively arranged at the bottom of the first pressure bag and the second pressure bag, and the first solenoid valve and the second solenoid valve are respectively installed at the bottom of the first pressure bag and the second pressure bag.

[0016] After adopting the above technical solution, the present invention has the following technical effects: (1) The present invention has two independent pressure packs, which can supply water to the toilet's wash water circuit and main flush water circuit respectively, meeting product requirements; at the same time, the drainage structures of the two pressure packs are controlled by two solenoid valves respectively. Through program design, the opening time of the two solenoid valves can be asynchronous, realizing the delayed flushing function of the toilet's wash water circuit and main flush water circuit asynchronously; (2) Under the action of the two-way check ball, when one back pressure chamber is opened, the two-way check ball can block the water outlet on the corresponding side of the active chamber under the action of the pressure difference, preventing the water in the other back pressure chamber from being discharged, ensuring that the solenoid valve only controls the corresponding drainage opening and has stable function; (3) The opening valve is connected to the two back pressure chambers through the water outlet at the same time, which can mechanically control the drainage structure of the two pressure bags to open at the same time, realizing the function of simultaneous drainage of the wash ring and main flush; (4) The present invention has a variety of control modes, which can be either electrically controlled or purely mechanically controlled. The electrical control can also realize the delayed flushing function of "washing the ring first and then the main flushing". With the assistance of the connecting component, complex pipeline connections can be avoided. In addition, the connecting component can be molded independently of the pressure bag to meet various shape requirements according to different product designs, thereby simplifying the pipeline connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a specific embodiment of the present invention.

[0018] Figure 2 It is a front view of a specific embodiment of the present invention.

[0019] Figure 3 It is a side view of a specific embodiment of the present invention.

[0020] Figure 4 It is a top view of a specific embodiment of the present invention.

[0021] Figure 5 It is a rear view of a specific embodiment of the present invention.

[0022] Figure 6 for Figure 3 Cross-sectional view along the AA direction and schematic diagram of the water inlet state of the pressure regulating valve.

[0023] Figure 7 for Figure 4Cross-sectional view in the middle BB direction and schematic diagram of the water filling status of the first water bag.

[0024] Figure 8 for Figure 4 Cross-sectional view in CC direction and schematic diagram of water filling status of the second water bag.

[0025] Figure 9 for Figure 5 Cross-sectional view in the DD direction and schematic diagram of the two-way check ball status.

[0026] Figure 10 This is a schematic diagram of the two-way check ball status during electronically controlled drainage of the first water drum.

[0027] Figure 11 This is a schematic diagram of the drainage direction when the first water drum is electronically controlled to drain water.

[0028] Figure 12 This is a schematic diagram of the two-way check ball status during electronic drainage of the second water drum.

[0029] Figure 13 This is a schematic diagram of the drainage direction when the second water drum is electronically drained.

[0030] Figure 14 This is a schematic diagram of the two-way check ball status when the first and second water bags are simultaneously mechanically controlled to drain water.

[0031] Figure 15 This is a schematic diagram of the drainage direction when the first and second water bags are simultaneously drained by machine control.

[0032] Figure 16 This is an exploded view of the water outlet box according to a specific embodiment of the present invention.

[0033] Description of Figure Numbers: 1-first pressure bag; 11-first drainage structure; 111-first chamber; 1111-first drain port; 1112-first drain pipe; 111a-first back pressure chamber; 111b-first drainage chamber; 111c-first water replenishment hole; 112-first diaphragm; 113-first return spring; 12-first water and air inlet structure; 2 - second pressure bag; 21 - second drainage structure; 211 - second chamber; 2111 - second drain port; 2112 - second drainage pipe; 211a - second back pressure chamber; 211b - second drainage chamber; 211c - third water supply hole; 212 - second diaphragm; 213 - second return spring; 22 - second water and air inlet structure; 3-first solenoid valve; 4-Second solenoid valve; 5-connecting component; 51-active chamber; 511-first water outlet; 512-second water outlet; 513-water outlet; 52-two-way check ball; 521-annular groove; 53-water channel; 6-Open valve; 7-pressure stabilizing valve; 8- tee pipe; 9-water outlet box; 91-lower body of water outlet box; 911-first water passage chamber; 912-second water passage chamber; 913-first inlet; 914-first outlet; 915-second inlet; 916-second outlet; 92-upper body of water outlet box; 921-third water passage chamber; 922-through hole; 93-upper cover of water outlet box; 931-air hole. DETAILED DESCRIPTION

[0034] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0035] refer to Figure 1-16 As shown, the present invention discloses a drainage control mechanism of a pressure-type flushing system, comprising a first pressure pack 1, a second pressure pack 2, a first solenoid valve 3, a second solenoid valve 4, a connecting component 5 and an opening valve 6; The first pressure bag 1 is provided with a first drainage structure 11, and the second pressure bag 2 is provided with a second drainage structure 21; The first solenoid valve 3 is disposed opposite to the first drain port 1111 of the first drain structure 11 and is used to open and close the first drain port 1111; the second solenoid valve 4 is disposed opposite to the second drain port 2111 of the second drain structure 21 and is used to open and close the second drain port 2111; The connecting assembly 5 is provided with a movable chamber 51 and a two-way check ball 52 that movably fits within the movable chamber 51. A first water outlet 511 and a second water outlet 512 are provided at both axial ends of the movable chamber 51, and a water outlet 513 is provided on its side. The first water outlet 511 and the second water outlet 512 are respectively connected to the first back pressure chamber 111a of the first drainage structure 11 and the second back pressure chamber 211a of the second drainage structure 21. The two-way check ball 52 moves between the first water outlet 511 and the second water outlet 512 as the pressure in the first back pressure chamber 111a and the second back pressure chamber 211a changes. The water inlet end of the opening valve 6 is communicated with the water outlet 513 and is used for mechanically opening and closing the water outlet 513 .

[0036] Through the above scheme, the present invention has two independent pressure bags, which can supply water to the wash ring water channel and the main flush water channel of the toilet respectively to meet product requirements; at the same time, the drainage structures of the two pressure bags are controlled by two solenoid valves respectively. Through program design, the opening time of the two solenoid valves can be made asynchronous, so as to realize the delayed flushing function of the wash ring water and the main flush water of the toilet. For example, the first pressure bag 1 supplies wash ring water, and the second pressure bag 2 supplies the main flush water, and the second solenoid valve 4 has a delay of about 3 seconds compared with the first solenoid valve 3, so that the main flush water is delayed for a period of time after the wash ring water before being released, ensuring that when the wash ring water flows to the sewage outlet, the main flush water is in the initial stage of release, and can be pushed by sufficient pressure to maintain strong water flow potential energy, which will effectively improve the flushing effect of the pressure flushing system, thereby completely removing the dirt at the sewage outlet; and, in the double Under the action of the check ball 52, when one of the back pressure chambers is opened, the two-way check ball 52 can block the water outlet on the corresponding side of the active chamber 51 under the action of the pressure difference, preventing the water in the other back pressure chamber from being discharged, ensuring that the solenoid valve only controls the corresponding drainage to open, and the function is stable; the opening valve 6 is connected to the two back pressure chambers at the same time through the water outlet 513, and can mechanically control the drainage structures of the two pressure bags to open at the same time, realizing the function of simultaneous drainage of the ring washing and main flushing; thus, the present invention has a variety of control methods, which can be electrically controlled or purely mechanically controlled, and the electrical control can also realize the delayed flushing function of "rinsing the ring first and then the main flushing", with the assistance of the connecting component 5, complex pipeline connections can be avoided; in addition, the connecting component 5 can be formed independently of the pressure bag, so as to meet various shape requirements according to different product designs, thereby simplifying the pipeline connection.

[0037] Specific embodiments of the present invention are shown below.

[0038] In this embodiment, the first drainage structure 11 and the second drainage structure 21 are respectively disposed at the bottom of the first pressure bag 1 and the second pressure bag 2, and the first solenoid valve 3 and the second solenoid valve 4 are respectively installed at the bottom of the first pressure bag 1 and the second pressure bag 4. The drainage structure is located at the bottom of the pressure bag, which is more conducive to draining the water in the pressure bag.

[0039] The connecting component 5 is designed to be split into at least two parts at the active cavity 51 so as to form a specific active cavity 51 and improve the yield rate.

[0040] A ring-shaped groove 521 is provided between the axial ends of the above-mentioned two-way check ball 52. Under normal conditions (a state in which both the first pressure bag 1 and the second pressure bag 2 contain a certain amount of water vapor and no water is discharged), the ring-shaped groove 521 is opposite to the water outlet 513 to ensure that the two-way check ball 52 will not block the water outlet 513 and has a flow rate that meets the drainage requirements.

[0041] The present invention also includes a pressure-stabilizing valve 7 connected to a water source (e.g., a water pipe installed in a wall during renovation). The pressure-stabilizing valve is also connected to the water inlets of the first and second pressure packs 1 and 2. In this embodiment, a tee pipe 8 is provided at the water outlet of the pressure-stabilizing valve 7. The water inlets of the first and second pressure packs 1 and 2 are respectively provided with a first water and air inlet structure 12 and a second water and air inlet structure 22. The two outlets of the tee pipe 8 are connected to the fluid inlets of the first and second water and air inlet structures 12 and 22, respectively. The specific structure of the water and air inlet structures can be found in CN219468628U. They utilize a Venturi mechanism to simultaneously draw in air at a predetermined ratio while simultaneously inletting water, thereby storing a fixed amount of air and water in the upper and lower portions of the pressure packs, respectively.

[0042] The present invention also includes a water outlet box 9; the water outlet box 9 is connected to the first drain pipe 1112 of the first drainage structure 11 and the second drain pipe 2112 of the second drainage structure 21, respectively. The water outlet box 9 can be provided with a first water passage chamber 911 and a second water passage chamber 912, each of which is connected to the atmosphere and communicates with the first drain pipe 1112 of the first drainage structure 11 and the second drain pipe 2112 of the second drainage structure 21, respectively. The water outlet box 9 allows flow control after the water exits the two pressure bags. Water outlet boxes 9 with different parameter designs (specifically, the outlet inner diameters of the first and second water passage chambers 911, 912) can meet the needs of different application scenarios. Furthermore, the first and second water passage chambers 911, 912, which are connected to the atmosphere, ensure that the pressure inside the water outlet box 9 is consistent with the atmospheric pressure, preventing negative pressure. This prevents backdraft of water discharged from the first and second water passage chambers 911, 912, thereby achieving an anti-siphon function.

[0043] Further, refer to Figure 16As shown, the water outlet box 9 includes a water outlet box lower body 91, a water outlet box upper body 92 and a water outlet box cover 93; the water outlet box lower body 91 is provided with the first water passage cavity 911, the second water passage cavity 912, and the first inlet 913 and the first outlet 914 communicating with the first water passage cavity 911, and the second inlet 915 and the second outlet 916 communicating with the second water passage cavity 912; the first inlet 913 is connected to the first drain pipe 1112 of the first drainage structure 11, and the first outlet 914 is connected to the toilet. The second inlet 915 is connected to the second drain pipe 2112 of the second drainage structure 21, and the second outlet 916 is connected to the main flushing water path of the toilet; the upper body 92 of the water outlet box is covered on the lower body 91 of the water outlet box, and is provided with a third water passage chamber 921. The bottom of the third water passage chamber 921 is provided with two through holes 922 which are respectively connected to the first water passage chamber 911 and the second water passage chamber 912; the upper cover 93 of the water outlet box is covered on the upper body 92 of the water outlet box, and is provided with an air hole 931 which is connected to the atmosphere. Among them, the third water chamber 921 can be connected to the water outlet ends of the above-mentioned opening valve 6, the pressure-stabilizing valve 7 and the two back pressure chambers, and finally the various pressure drainages in the system are drained through the water outlet box 9 to the first water chamber 911 or the second water chamber 912 and then directly discharged into the toilet for flushing to avoid waste; in addition, a one-way valve can be set in each of the two through holes 922, and the one-way valve only allows liquid / gas from the third water chamber 921 to flow in the direction of the first water chamber 911 / the second water chamber 912, thereby preventing the system's drainage from entering the third water chamber 921.

[0044] Secondly, the connecting component 5 is also provided with a water passage 53, which is also a three-way water passage. Its two inlets are respectively connected to the first back pressure chamber 111a of the first drainage structure 11 and the second back pressure chamber 211a of the second drainage structure 21, and the outlet is connected to the third water passage chamber 921. This allows the drainage of the corresponding back pressure chamber to be discharged to the water outlet box 9 after the solenoid valve is opened, avoiding complex water channel connections and wasteful drainage. Moreover, by designing the water channel structure of the connecting component 5, the corresponding water channel connection requirements can be met, without the need for complex pipe connections or modifications to the pressure bag itself, making it easier to improve existing pressure flushing systems.

[0045] refer to Figure 7As shown, the first drainage structure 11 includes a first cavity 111 and a first diaphragm 112; the first cavity 111 is provided with a first drain port 1111 and a first drain pipe 1112; the first diaphragm 112 is movably fitted in the first cavity 111 to separate the first cavity 111 into a first back pressure cavity 111a and a first drainage cavity 111b, and is provided with a first water replenishment hole 111c communicating with the first back pressure cavity 111a and the first drainage cavity 111b; the first drain port 1111 is connected to the first back pressure cavity 111a, and the first drain pipe 1112 is connected to the first back pressure cavity 111a. A pressure bag 1 and a first drain pipe 1112 are both connected to the first drain chamber 111b; when the first pressure bag 1 supplies water, water enters the first drain chamber 111b and enters the first back pressure chamber 111a through the first water replenishment hole 111c, and the pressure in the first back pressure chamber 111a increases; when the first drain port 1111 is opened, the first back pressure chamber 111a drains water to reduce the pressure, and the first diaphragm 112 moves closer to or away from the first drain pipe 1112 as the pressure in the first back pressure chamber 111a changes to block or open the first drain pipe 1112.

[0046] Furthermore, the first drainage structure 11 further includes a first return spring 113 disposed in the first back pressure chamber 111 a . The first return spring 113 is used to return the first diaphragm 112 toward the first drainage pipe 1112 to block the first drainage pipe 1112 .

[0047] refer to Figure 8 As shown, similar to the first drainage structure 11, the second drainage structure 21 includes a second cavity 211 and a second diaphragm 212; the second cavity 211 is provided with a second drain port 2111 and a second drain pipe 2112; the second diaphragm 212 is movably fitted in the second cavity 211 to separate the second cavity 211 into a second back pressure cavity 211a and a second drainage cavity 211b, and is provided with a third water replenishment hole 211c communicating with the second back pressure cavity 211a and the second drainage cavity 211b; the second drain port 2111 is connected to the second back pressure cavity 211a, the second pressure bag 2 and the second drain pipe 2112 are all connected to the second drain chamber 211b; when the main punch pressure bag 1 supplies water, water enters the second drain chamber 211b and enters the second back pressure chamber 211a through the third water replenishment hole 211c, and the pressure in the second back pressure chamber 211a increases; when the second drain port 2111 is opened, the second back pressure chamber 211a drains water to reduce the pressure, and the second diaphragm 212 moves closer to or away from the second drain pipe 2112 as the pressure in the second back pressure chamber 211a changes to block or open the second drain pipe 2112.

[0048] Furthermore, the second drainage structure 21 further includes a second reset spring 213 disposed in the second back pressure chamber 211 a . The second reset spring 213 is used to reset the second diaphragm 212 toward the second drainage pipe 2112 to block the second drainage pipe 2112 .

[0049] In this embodiment, the first pressure pack 1 and the second pressure pack 2 serve as the wash water pressure pack and the main flush water pressure pack respectively. Figure 6-15 As shown, the working principle of the present invention is: A. Water intake stage refer to Figure 6 As shown, the water flow flows in from the pressure regulating valve 7, and is divided into two paths at the position of the three-way pipe 8 to enter the first pressure bag 1 and the second pressure bag 2 respectively; Figure 7-8 As shown, one water flow enters the first pressure bag 1 through the first water inlet and air inlet structure 12, and then fills the first back pressure chamber 111a through the first water replenishment hole 111c, and the other water flow enters the second pressure bag 2 through the second water inlet and air inlet structure 22, and then fills the second back pressure chamber 211a through the second water replenishment hole 211c; Figure 9 As shown, since the first back pressure chamber 111a and the second back pressure chamber 211a are connected and the pressures are equal, the two-way check ball 52 is in a suspended state.

[0050] B. Electronically controlled opening refer to Figure 10 As shown, after the first solenoid valve 3 of the first pressure bag 1 is started, the pressurized water in the first back-pressure chamber 111a is discharged through the water passage 53 (actually also discharged to the water outlet box 9), and the pressure in the first back-pressure chamber 111a is reduced. At this time, the two-way check ball 52 approaches the direction of the first pressure bag 1 under the pressure of the second back-pressure chamber 211a, blocking the first water outlet 511, ensuring that the second back-pressure chamber 211a will not communicate with the first back-pressure chamber 111a to ensure that it is still in a sealed state (because the opening valve 6 is also in a closed state), avoiding the pressure relief of the second back-pressure chamber 211a, and finally the first pressure bag 1 is drained, and the second pressure bag 2 is not drained; refer to Figure 11 As shown, after the first pressure bag 1 is drained, the water flows through the water outlet box 9 and is discharged to the toilet ring water channel through the pipeline to achieve flushing of the toilet ring.

[0051] refer to Figure 12 As shown, 3 seconds after the first solenoid valve 3 is activated, the second solenoid valve 4 of the second pressure bag 2 is activated, and the pressurized water in the second back pressure chamber 211a is also discharged through the water passage 53 (actually also discharged to the water outlet box 9); at this time, the two-way check ball 52 approaches the direction of the second pressure bag 2, blocking the second water outlet 512, thereby sealing the first back pressure chamber 111a and draining the second pressure bag 2; refer to FIG. Figure 13 As shown, after draining from the second pressure pack 2, the water flows through the water outlet box 9 and is discharged through the pipe to the main flushing water channel of the toilet, achieving bottom flushing. In addition, due to the delayed opening of the second solenoid valve 4, when the wash water flows to the sewage outlet, the main flush water is in the initial stage of release and can be driven by sufficient pressure to maintain strong water flow potential energy. This will effectively enhance the flushing effect of the pressure flushing system, thereby completely removing dirt from the sewage outlet.

[0052] C. Mechanical opening refer to Figure 14 As shown, the user manually operates the valve 6 and presses the corresponding button. The pressure water in the first back pressure chamber 111a and the second back pressure chamber 211a is discharged simultaneously through the water outlet 513 of the active chamber 51 (actually also discharged to the water outlet box 9). At this time, the two-way check ball 52 is in the middle position, and the first pressure bag 1 and the second pressure bag 2 are drained at the same time. Figure 15 As shown, the first pressure bag 1 and the second pressure bag 2 respectively realize simultaneous drainage of the wash circle and the main flush through their respective corresponding water channels.

[0053] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A drainage control mechanism for a pressure flushing system, characterized by: It includes a first pressure bag, a second pressure bag, a first solenoid valve, a second solenoid valve, a connecting component and an opening valve; The first pressure bag is provided with a first drainage structure, and the second pressure bag is provided with a second drainage structure; The first solenoid valve is used to open and close the first drain port of the first drainage structure; the second solenoid valve is used to open and close the second drain port of the second drainage structure; The connecting component is provided with an active cavity and a two-way check ball that movably fits in the active cavity; a first water outlet and a second water outlet are provided at both axial ends of the active cavity, and a water outlet is provided on its side; the first water outlet and the second water outlet are respectively connected to the first back-pressure cavity of the first drainage structure and the second back-pressure cavity of the second drainage structure, and the two-way check ball moves between the first water outlet and the second water outlet as the pressure of the first back-pressure cavity and the second back-pressure cavity changes; The opening valve is used to mechanically open and close the water outlet.

2. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: An annular groove is provided between the axial ends of the bidirectional check ball, and the annular groove is opposite to the water outlet in a normal state.

3. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: It also includes a pressure-stabilizing valve connected to a water source; the pressure-stabilizing valve is simultaneously connected to the water inlet ends of the first pressure bag and the second pressure bag.

4. The drainage control mechanism of the pressure flushing system according to claim 3, wherein: The water outlet end of the pressure-stabilizing valve is provided with a three-way pipe; the water inlet ends of the first pressure bag and the second pressure bag are respectively provided with a first water inlet and air intake structure and a second water inlet and air intake structure, and the two outlets of the three-way pipe are respectively connected to the fluid inlets of the first water inlet and air intake structure and the second water inlet and air intake structure.

5. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: It also includes a water outlet box; the water outlet box is communicated with the first drainage pipe of the first drainage structure and the second drainage pipe of the second drainage structure respectively.

6. The drainage control mechanism of the pressure flushing system according to claim 5, characterized in that: The water outlet box includes a water outlet box lower body, a water outlet box upper body and a water outlet box upper cover; the water outlet box lower body is provided with a first water passage cavity and a second water passage cavity which are not connected, as well as a first inlet and a first outlet connected to the first water passage cavity, and a second inlet and a second outlet connected to the second water passage cavity; The first inlet is connected to the first drainage pipe of the first drainage structure, and the first outlet is connected to the wash water channel of the toilet; the second inlet is connected to the second drainage pipe of the second drainage structure, and the second outlet is connected to the main flushing water channel of the toilet; the upper body of the water outlet box is covered on the lower body of the water outlet box, and is provided with a third water flow cavity, and the bottom of the third water flow cavity is provided with two through holes respectively connected to the first water flow cavity and the second water flow cavity; the upper cover of the water outlet box is covered on the upper body of the water outlet box, and is provided with an air hole connected to the atmosphere.

7. The drainage control mechanism of the pressure flushing system according to claim 6, characterized in that: The connecting component is further provided with a water passage, which is a three-way water channel, and is respectively connected with the first back pressure chamber of the first drainage structure, the second back pressure chamber of the second drainage structure and the third water passage chamber.

8. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: The first drainage structure includes a first cavity and a first diaphragm; the first cavity is provided with a first drain port and a first drain pipe; the first diaphragm movably cooperates in the first cavity to separate the first cavity into a first back pressure cavity and a first drainage cavity, and is provided with a first water replenishment hole connecting the first back pressure cavity and the first drainage cavity; the first drain port is connected to the first back pressure cavity, and the first pressure bag and the first drain pipe are both connected to the first drainage cavity; when the first pressure bag supplies water, water enters the first drainage cavity and enters the first back pressure cavity through the first water replenishment hole, and the pressure in the first back pressure cavity increases; when the first drain port is opened, the first back pressure cavity discharges water to reduce the pressure, and the first diaphragm moves closer to or away from the first drain pipe as the pressure in the first back pressure cavity changes to block or open the first drain pipe.

9. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: The second drainage structure includes a second chamber and a second diaphragm; the second chamber is provided with a second drain port and a second drain pipe; the second diaphragm movably cooperates in the second chamber to separate the second chamber into a second back pressure chamber and a second drainage chamber, and is provided with a second water supply hole connecting the second back pressure chamber and the second drainage chamber; the second drain port is connected to the second back pressure chamber, and the second pressure bag and the second drain pipe are both connected to the second drainage chamber; when the second pressure bag supplies water, water enters the second drainage chamber and enters the second back pressure chamber through the second water supply hole, and the pressure in the second back pressure chamber increases; when the second drain port is opened, the second back pressure chamber drains water to reduce the pressure, and the second diaphragm moves closer to or away from the second drain pipe as the pressure in the second back pressure chamber changes to block or open the second drain pipe.

10. The drainage control mechanism of the pressure flushing system according to claim 1, wherein: The first drainage structure and the second drainage structure are respectively arranged at the bottom of the first pressure bag and the second pressure bag, and the first solenoid valve and the second solenoid valve are respectively installed at the bottom of the first pressure bag and the second pressure bag.

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