Mechanical time delay mechanism of pressure type flushing system

Abstract

The invention discloses a mechanical time delay mechanism of a pressure type flushing system, which realizes delayed flushing of different water paths by means of a pure mechanical structure and comprises a washing ring pressure bag, a main flushing pressure bag and a time delay device, the ring washing pressure bag is provided with a ring washing drainage structure, and the main flushing pressure bag is provided with a main flushing drainage structure. The time delay device comprises a time delay body, a time delay diaphragm, a time delay piston seat and a time delay elastic piece; a movable cavity, a first interface, a second interface and a third interface are arranged in the delay body, the first interface is communicated with the movable cavity, and the second interface is communicated with the third interface; the delay diaphragm is arranged in the movable cavity and is driven by water pressure; the time-delay piston seat and the time-delay diaphragm move synchronously and are used for connecting or disconnecting the second interface and the third interface; the time-delay elastic piece acts on the time-delay piston seat and enables the time-delay piston seat to reset to a state of blocking the second interface and the third interface; the first interface is communicated with a washing ring drainage pipe of the washing ring drainage structure; the second interface is communicated with a main flushing drainage opening of the main flushing drainage structure; the third interface is used for draining.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pressure flushing system, in particular to a mechanical delay mechanism of pressure flushing system. BACKGROUND

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

[0003] The pressure flushing system usually uses 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 cavity and a diaphragm. The cavity is provided with a water outlet, a water inlet and a drainage pipe. The diaphragm is movably fitted in the cavity to divide the cavity into a back pressure chamber and a drainage chamber, and is provided with a water supplement hole communicating the back pressure chamber and the drainage chamber. The water outlet communicates with the back pressure chamber, and the water inlet and the drainage pipe communicate with the drainage chamber. The pressure bag body is provided with a water storage chamber, and the water storage chamber communicates with the water inlet. When the water storage chamber supplies water, the water enters the drainage chamber and enters the back pressure chamber through the water supplement hole, and the pressure of the back pressure chamber increases. When the water outlet is opened, the back pressure chamber releases water to reduce the pressure, and the diaphragm moves closer to or away from the drainage pipe to block or open the drainage pipe. Thus, the drainage mode of the pressure flushing system can be simplified, and the drainage structure is not affected by the change of water supply pressure and flow, ensuring stable drainage.

[0004] At the same time, the drainage of the pressure flushing system is usually divided into two paths, the upper path forms a washing ring water path, and the lower path forms a main flushing (also called bottom flushing) water path. Based on the existing structure design, when the user presses the drainage button, the washing ring water path and the main flushing water path almost simultaneously release water: when the washing ring water flows downward to the sewage outlet of the toilet bowl, the water flow potential energy has gradually weakened; at the same time, the water flow potential energy of the main flushing water also weakens with the release of pressure. Although the amount of water converging to the sewage outlet is large, the energy is weak, resulting in poor siphon effect of the sewage outlet, which is not conducive to effective flushing of the sewage, and the flushing effect is not ideal. Obviously, if the main flushing water can be delayed for a period of time after the washing ring water and then released, ensuring that when the washing ring water flows to the sewage outlet, the main flushing 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 sewage of the sewage outlet.

[0005] To achieve the flushing mode of "washing the rim first and then flushing the main", one method is to increase the length of the waterway of the main flushing, thereby increasing the time from the discharge moment to the arrival of the sewage outlet. However, this method either requires connecting a longer water pipe between the pressure bag and the ceramic body of the toilet, which is not conducive to the installation of the pressure flushing system, or requires improving the ceramic body to lengthen the internal waterway, resulting in the need for users to replace the existing toilet, increasing the cost of modification and not being easily accepted. Another method is to use multiple electromagnetic valves to control the opening and closing of the drain ports of the drainage structures in different pressure bags, and by setting the opening sequence and interval time of the drain ports, the discharge time of the rim washing water and the main flushing water is different, so as to achieve the expected effect. Obviously, relying on electromagnetic valve control has the disadvantage of requiring electric power drive, and once the power is off, the circuit is broken or a circuit fault occurs, the system will not work normally. SUMMARY

[0006] The main purpose of the present application is to provide a mechanical delay mechanism of a pressure flushing system, which solves the problems existing in the prior art, does not need to set an electromagnetic valve, and can realize the delayed flushing of different waterways by relying on a pure mechanical structure, so as to achieve a better flushing effect.

[0007] In order to achieve the above purpose, the solution of the present application is: A mechanical delay mechanism of a pressure flushing system, comprising a rim washing pressure bag, a main flushing pressure bag and a delay device; the rim washing pressure bag is provided with a rim washing drainage structure, and the main flushing pressure bag is provided with a main flushing drainage structure; the delay device comprises a delay body, a delay diaphragm, a delay piston seat and a delay elastic member; the delay body is provided with a movable cavity, a first interface, a second interface and a third interface, the first interface communicates with the movable cavity, and the second interface communicates with the third interface; the delay diaphragm is arranged in the movable cavity and is driven by water pressure; the delay piston seat moves synchronously with the delay diaphragm and communicates or blocks the second interface and the third interface; the delay elastic member acts on the delay piston seat and makes it reset to a state of blocking the second interface and the third interface; the first interface communicates with a rim washing drain pipe of the rim washing drainage structure; the second interface communicates with a main flushing drain port of the main flushing drainage structure; and the third interface is used for drainage.

[0008] A water passing port is arranged between the movable cavity and the first interface, the periphery of the delay diaphragm is fixed to the side wall of the movable cavity, and the delay piston seat and the water passing port are located on the two sides of the delay diaphragm respectively.

[0009] Preferably, the delay device further comprises a through-hole needle that moves synchronously with the delay diaphragm and the delay piston seat, the through-hole needle is movably arranged in the water passing port and gap-fitted with the side wall of the water passing port.

[0010] Preferably, the inner wall of the movable cavity is provided with a ring-shaped flange surrounding the water passage; under the action of the time-delay elastic member, the time-delay diaphragm is attached to the end face of the ring-shaped flange.

[0011] The time-delay body is provided with a water passage coaxial with the time-delay piston seat, and the two ends of the water passage are in communication with the second interface and the third interface respectively; the time-delay piston seat is provided with a piston rod movably arranged in the water passage to open or close the water passage.

[0012] Preferably, the side wall of the water passage is provided with a V-shaped sealing ring, the peripheral surface of the piston rod is in dynamic sealing cooperation with the inner side surface of the V-shaped sealing ring, and a water passage groove is arranged; when the water passage groove is opposite to the V-shaped sealing ring, the inner side surface of the V-shaped sealing ring is not in contact with the groove bottom of the water passage groove, so as to open the water passage and make the second interface and the third interface in communication.

[0013] The time-delay elastic member is a spring.

[0014] The time-delay body comprises a time-delay upper cover, a time-delay partition plate and a time-delay lower shell which are designed separately and assembled into one body; the movable cavity is formed between the time-delay partition plate and the time-delay lower shell, the time-delay lower shell is in communication with the first interface, the time-delay upper shell is in communication with the second interface and the third interface, the periphery of the time-delay diaphragm is tightly fixed at the connection between the time-delay upper shell and the time-delay lower shell, and the time-delay elastic member is arranged between the time-delay piston seat and the time-delay partition plate.

[0015] The first three-way pipe is arranged between the first interface and the washing ring drain pipe, and the two ports of the first three-way pipe are in communication with the first interface and the washing ring drain pipe respectively, and the remaining port is in communication with the washing ring waterway of the toilet bowl.

[0016] The mechanical time-delay mechanism of the pressure type flushing system further comprises a pressure stabilizing valve in communication with the water source; the water outlet end of the pressure stabilizing valve is provided with a second three-way pipe, and the two outlets of the second three-way pipe are in communication with the washing ring pressure pack and the main flushing pressure pack respectively.

[0017] The mechanical time-delay mechanism of the pressure type flushing system further comprises an opening valve in communication with the washing ring drain port of the washing ring drain structure.

[0018] The mechanical delay mechanism of the pressure flushing system further comprises a water outlet box; the water outlet box comprises 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 passing cavity, a second water passing cavity, a first inlet communicated with the first water passing cavity, a first outlet, a second inlet communicated with the second water passing cavity and a second outlet; the first inlet is communicated to a washing ring drain pipe of the washing ring drainage structure, and the first outlet is simultaneously communicated to the first interface and a washing ring waterway of the toilet bowl; the second inlet is communicated to a main flushing drain pipe of the main flushing drainage structure, and the second outlet is communicated to a main flushing waterway of the toilet bowl; the water outlet box upper body is covered on the water outlet box lower body and is provided with a third water passing cavity, the bottom of the third water passing cavity is provided with two through holes communicated with the first water passing cavity and the second water passing cavity respectively; and the water outlet box upper cover is covered on the water outlet box upper body and is provided with a gas hole communicated with the atmosphere.

[0019] After the technical scheme is applied, the application has the following technical effects: (1) The application can realize the delay flushing function of the pressure flushing system, so that the main flushing pressure bag is drained later than the washing ring pressure bag, so as to achieve better flushing effect; (2) The time length during which the water pressure in the movable cavity increases until it is greater than the elastic force of the delay elastic member is basically equal to the time interval during which the main flushing drainage structure is opened later than the washing ring drainage structure, so that the delay time length of the mechanical delay mechanism can be controlled by technical means such as controlling the flow of water entering the movable cavity or adjusting the elastic force of the delay elastic member, and thus the pure mechanical delay flushing function is realized, without the need to set an electromagnetic valve; (3) For the entire pressure flushing system, the user only needs to open the washing ring drainage by one operation (such as pressing the opening valve or kicking the kick valve), so as to link and open the main flushing drainage, which is simple and fast in operation; in addition, under the action of the delay elastic member, the delay piston seat can keep the state of blocking the second interface and the third interface, so as to avoid accidental opening of the main flushing drainage structure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole perspective view of the embodiment of the application.

[0021] Figure 2 It is a sectional view of the delay device of the embodiment of the application.

[0022] Figure 3 It is a whole top view of the embodiment of the application.

[0023] Figure 4 It is Figure 3 a sectional view in A-A direction.

[0024] Figure 5 It is Figure 3Sectional view in B-B direction.

[0025] Figure 6 For Figure 3 Sectional view in C-C direction.

[0026] Figure 7 For Figure 3 Sectional view in D-D direction.

[0027] Figure 8 The exploded view of the water outlet box of the specific embodiment of the application.

[0028] Figure 9 The drainage path schematic view of the specific embodiment of the application.

[0029] Brief description of the drawings: 1-washing ring pressure bag; 11-washing ring drainage structure; 111-washing ring cavity; 111a-washing ring back pressure cavity; 111b-washing ring drainage cavity; 111c-washing ring water replenishing hole; 1111-washing ring water outlet; 1112-washing ring drainage pipe; 112-washing ring diaphragm; 113-washing ring return spring; 2-main punch pressure bag; 21-main punch drainage structure; 211-main punch cavity; 211a-main punch back pressure cavity; 211b-main punch drainage cavity; 211c-main punch water replenishing hole; 2111-main punch water outlet; 2112-main punch drainage pipe; 212-main punch diaphragm; 213-main punch return spring; 3-delay device; 31-delay body; 31a-delay upper cover; 31b-delay partition plate; 31c-delay lower shell; 311-moving cavity; 312-first interface; 313-second interface; 314-third interface; 315-water passing opening; 316-annular flange; 317-water passing channel; 318-fixed pipe; 32-delay diaphragm; 33-delay piston seat; 331-limiting column; 332-piston rod; 333-water passing groove; 34-delay elastic member; 35-through hole needle; 36-V-shaped sealing ring; 4-first three-way pipe; 5-pressure stabilizing valve; 6-second three-way pipe; 7-opening valve; 8-water outlet box; 81-water outlet box lower body; 811-first water passing cavity; 812-second water passing cavity; 813-first inlet; 814-first outlet; 815-second inlet; 816-second outlet; 82-water outlet box upper body; 821-third water passing cavity; 822-through hole; 83-water outlet box upper cover; 831-air hole. DETAILED DESCRIPTION

[0030] In order to further explain the technical solutions of the application, the application will be described in detail below through specific embodiments.

[0031] Reference Figures 1-9 As shown in the figure, the mechanical delay mechanism of the pressure type flushing system comprises a washing ring pressure package 1, a main flushing pressure package 2 and a delay device 3. The washing ring pressure package 1 is provided with a washing ring drainage structure 11, and the main flushing pressure package 2 is provided with a main flushing drainage structure 21. The delay device 3 comprises a delay body 31, a delay diaphragm 32, a delay piston seat 33 and a delay elastic member 34; the delay body 31 is internally provided with a movable cavity 311, a first interface 312, a second interface 313 and a third interface 314, the first interface 312 is in communication with the movable cavity 313, the second interface 313 is in communication with the third interface 314; the delay diaphragm 32 is arranged in the movable cavity 311 and is driven by water pressure; the delay piston seat 33 moves synchronously with the delay diaphragm 32 and communicates or blocks the second interface 313 and the third interface 314; the delay elastic member 34 acts on the delay piston seat 33 and resets it to a state of blocking the second interface 313 and the third interface 314. The first interface 312 is in communication with a washing ring drainage pipe 1112 of the washing ring drainage structure 11; the second interface 313 is in communication with a main flushing drain port 2111 of the main flushing drainage structure 21; the third interface 314 is used for drainage, specifically for draining water in a main flushing back pressure cavity 211a.

[0032] Through the above scheme, reference Figure 2 As shown in the figure, when the washing ring drainage structure 11 is opened and starts to drain, part of the water flow discharged by the washing ring pressure package 1 will enter the movable cavity 311 through the first interface 311, so that the water pressure in the movable cavity 311 increases, the water pressure acts on the delay diaphragm 32 and the delay piston seat 33 to resist the elastic force of the delay elastic member 34, until the water pressure is greater than the elastic force, the piston seat 33 starts to move, so that the second interface 313 and the third interface 314 are in communication, so as to release the back pressure cavity pressure of the main flushing drainage structure 21, and then open the main flushing drainage structure 21, and the main flushing pressure package 2 starts to drain; obviously, the time length of the increase of the water pressure in the movable cavity 311 until it is greater than the elastic force of the delay elastic member 34 is basically equal to the time interval of the opening of the main flushing drainage structure 21 later than the washing ring drainage structure 11, and the time length of the mechanical delay mechanism can be controlled by technical means such as controlling the flow of water entering the movable cavity 311 or adjusting the elastic force of the delay elastic member 34, and the invention also realizes the pure mechanical type delay flushing function without setting an electromagnetic valve; for the whole pressure type flushing system, the user only needs to open the washing ring drainage through one operation (such as pressing the opening valve or kicking the kick valve) to open the main flushing drainage, which is simple and fast; in addition, under the action of the delay elastic member 34, the delay piston seat 33 can keep the state of blocking the second interface 313 and the third interface 314, avoiding the accidental opening of the main flushing drainage structure 21.

[0033] Specific embodiments of the present invention are shown below.

[0034] A water outlet 315 is provided between the movable chamber 311 and the first interface 312. The periphery of the time-delay diaphragm 32 is fixed to the side wall of the movable chamber 311, and the time-delay piston seat 33 and the water outlet 315 are respectively located on both sides of the time-delay diaphragm 32. Water can flow in and out of the movable chamber 311 through the water outlet 315. Specifically, when the wash ring drainage structure 11 is opened and begins to drain, part of the water discharged from the wash ring pressure bag 1 will enter the movable chamber 311 through the first interface 311 and the water outlet 315 in sequence. When the wash ring drainage structure 11 is closed and stops draining, no more water flows into the first interface 311. Under the elastic force of the delay elastic member 314, the time-delay diaphragm 32 and the time-delay piston seat 33 gradually return to their original position, and the water in the movable chamber 311 is discharged through the water outlet 315 and the first interface 311 in sequence. Finally, the water is discharged into the wash ring water path of the toilet. Therefore, the delay time of the mechanical delay mechanism can be controlled by controlling the flow rate at the water outlet 315 or adjusting the elastic force of the delay elastic member 34 or other technical means.

[0035] Furthermore, the delay device 3 also includes a through-hole needle 35 that moves synchronously with the delay diaphragm 32 and the delay piston seat 33. The through-hole needle 35 is movably inserted into the water outlet 315 and cooperates with the side wall gap of the water outlet 315 so that water can flow in and out of the gap between the water outlet 315 and the through-hole needle 35. In this embodiment, the surface of the delay piston seat 33 facing the delay diaphragm 32 is provided with at least one limiting post 331 that penetrates the delay diaphragm 32; one limiting post 331 is arranged opposite to the water outlet 315, and the through-hole needle 35 is inserted into the limiting post 331. Therefore, in actual production and processing, the method that can be used to adjust the delay time is: changing the diameter of the through-hole needle 35, the inner diameter of the water outlet 315, and the elastic force of the delay elastic member 34. In addition, the axial movement of the through-hole needle 35 in the water outlet 315 can also clean the water outlet 315 in real time, avoiding the residual scale or other impurities causing the flow at the water outlet 315 to decrease and affect the preset delay time.

[0036] At the same time, the inner wall of the movable chamber 311 is provided with an annular flange 316 surrounding the water outlet 315. When the system is not draining, the delay diaphragm 32 is pressed against the end surface of the annular flange 316 by the action of the delay elastic member 34. The annular flange 316 forms a small chamber between the delay diaphragm 32 and the annular flange 316. When water enters the water outlet 315, the chamber gradually fills and increases the water pressure. The area over which the water pressure in the chamber acts on the delay diaphragm 32 is determined by the inner diameter of the annular flange 316. This increases the area over which the water pressure acts on the delay diaphragm 32 and prevents the delay diaphragm 32 from completely blocking the water outlet 315, making it difficult for the water pressure at the water outlet 315 to push it.

[0037] The water passage 317 is coaxial with the delay piston seat 33, and the two ends of the water passage 317 are communicated with the second interface 313 and the third interface 314 respectively; the delay piston seat 33 is provided with a piston rod 332 movably penetrating the water passage 317 to open or close the water passage 317.

[0038] Further, the side wall of the water passage 317 is provided with a V-shaped sealing ring 36, the peripheral surface of the piston rod 332 is dynamically sealed with the inner side surface of the V-shaped sealing ring 36, and a water passage groove 333 is arranged; when the water passage groove 333 is opposite to the V-shaped sealing ring 36, the inner side surface of the V-shaped sealing ring 36 does not contact the groove bottom of the water passage groove 333, so as to open the water passage 317 and make the second interface 313 and the third interface 314 communicated. The V-shaped sealing ring 36 can be fixed by adhesion.

[0039] The delay elastic member 34 is a spring.

[0040] In order to simplify the processing and forming process of the delay body 31 of the delay device 3 and facilitate the assembly of the delay device 3, the delay body 31 in the embodiment is composed of a delay upper cover 31a, a delay partition plate 31b and a delay lower shell 31c which are designed separately and assembled into one. The active cavity 311 is formed between the delay partition plate 31b and the delay lower shell 31c, the delay lower shell 31c is communicated with the first interface 312, the delay upper shell 31a is communicated with the second interface 313 and the third interface 314, the periphery of the delay diaphragm 32 is tightly fixed at the connection between the delay upper shell 31a and the delay lower shell 31c, and the delay elastic member 34 is arranged between the delay piston seat 33 and the delay partition plate 31b. In addition, the water passage 317 is arranged in the delay upper shell 31a, the water passage groove 333 is movably penetrated in the delay partition plate 31b, and the V-shaped sealing ring 36 is arranged on the fixed pipe 318 of the delay partition plate 31b to be fixed on the inner wall of the delay upper shell 31a, and the piston rod 332 is movably penetrated in the fixed pipe 318.

[0041] The first three-way pipe 4 is arranged between the first interface 312 and the washing ring drain pipe 1112, that is, the first three-way pipe 4 is arranged between the washing ring drain structure 11 and the delay device 3, the two ports of the first three-way pipe 4 are communicated with the first interface 312 and the washing ring drain pipe 1112 respectively, and the remaining port is communicated with the washing ring waterway of the toilet bowl. Thus, part (smaller flow) of the water flow discharged from the washing ring pressure tank 1 is branched to the delay device 3 to realize the delay opening of the main flushing drain structure 21, and the other part (larger flow) is directly flowed to the washing ring waterway of the toilet bowl to realize the washing ring function as in the prior art.

[0042] The application also comprises a pressure stabilizing valve 5 in communication with a water source (e.g. a water pipe preset in a wall during decoration); the water outlet end of the pressure stabilizing valve 5 is provided with a second three-way pipe 6, and two outlets of the second three-way pipe 6 are respectively communicated to the washing ring pressure pack 1 and the main flushing pressure pack 2.

[0043] The application also comprises an opening valve 7 in communication with the washing ring drain port 1111 of the washing ring drain structure 11, which is manually operated by a user to open the washing ring drain structure 11, so as to realize the drainage function of the washing ring pressure pack 1.

[0044] The application also comprises a water outlet box 8; as shown in Figure 8 The water outlet box 8 comprises a lower body 81, an upper body 82 and an upper cover 83; the lower body 81 is provided with a first water passing cavity 811 and a second water passing cavity 812 which are not communicated, a first inlet 813 and a first outlet 814 which are communicated to the first water passing cavity 811, and a second inlet 815 and a second outlet 816 which are communicated to the second water passing cavity 812; the first inlet 813 is communicated to the washing ring drain pipe 1112 of the washing ring drain structure 11, and the first outlet 814 is simultaneously communicated to the first interface 312 and the washing ring waterway of the toilet (e.g. through the first three-way pipe 4 described above), so that the washing ring drain pipe 1112 of the washing ring drain structure 11 is simultaneously communicated to the first interface 312 and the washing ring waterway of the toilet, and when the washing ring drain structure 11 is drained, part of the flow is shunted to the time delay device 3 to delay the opening of the main flushing drain structure 21; the second inlet 815 is communicated to the main flushing drain pipe 2112 of the main flushing drain structure 21, and the second outlet 816 is communicated to the main flushing waterway of the toilet; the upper body 82 is covered on the lower body 81 and is provided with a third water passing cavity 821, and the bottom of the third water passing cavity 821 is provided with two through holes 822 which are respectively communicated to the first water passing cavity 811 and the second water passing cavity 812; the upper cover 83 is covered on the upper body 82 and is provided with an air hole 831 which is communicated to the atmosphere. The third water passing cavity 821 can be communicated to the drain end of the pressure stabilizing valve 5, the opening valve 7 and the like of the pressure flushing system, and finally the drain is discharged to the first water passing cavity 811 or the second water passing cavity 812 to be discharged into the toilet, so as to avoid waste; in addition, a one-way valve can be arranged in each of the two through holes 822, and the one-way valve only allows the liquid / gas in the third water passing cavity 821 to flow in the direction of the first water passing cavity 811 / second water passing cavity 812, so as to prevent the drain of the system from entering the third water passing cavity 821. By arranging the water outlet box 8, the flow can be controlled after the water flow is discharged from the two pressure packs, and the water outlet box 8 with different parameter designs (specifically the inner diameters of the first outlet 814 and the second outlet 816) can meet the application requirements in different scenes; and by arranging the air hole 831 to be connected to the atmosphere, the pressure inside the water outlet box 8 can be consistent with the atmosphere, so that negative pressure is not generated, thereby avoiding the water flow in the first outlet 814 and the second outlet 816 from being sucked back, and realizing the anti-siphon function.

[0045] The washing ring drainage structure 11 comprises a washing ring cavity 111 and a washing ring diaphragm 112. The washing ring cavity 111 is provided with a washing ring drain port 1111 and a washing ring drainage pipe 1112. The washing ring diaphragm 112 is movably fitted in the washing ring cavity 111, so that the washing ring cavity 111 is divided into a washing ring back pressure cavity 111a and a washing ring drainage cavity 111b, and is provided with a washing ring water replenishing hole 111c for connecting the washing ring back pressure cavity 111a and the washing ring drainage cavity 111b. The washing ring drain port 1111 is connected to the washing ring back pressure cavity 111a, and the washing ring pressure pack 1 and the washing ring drainage pipe 1112 are both connected to the washing ring drainage cavity 111b. When the washing ring pressure pack 1 supplies water, the water enters the washing ring drainage cavity 111b and then enters the washing ring back pressure cavity 111a through the washing ring water replenishing hole 111c, so that the pressure of the washing ring back pressure cavity 111a increases. When the washing ring drain port 1111 is opened, the washing ring back pressure cavity 111a is drained, so that the pressure decreases, and the washing ring diaphragm 112 moves away from or approaches the washing ring drainage pipe 1112 to block or open the washing ring drainage pipe 1112 according to the change of the pressure of the washing ring back pressure cavity 111a.

[0046] Further, the washing ring drainage structure 11 further comprises a washing ring reset spring 113 arranged in the washing ring back pressure cavity 111a. The washing ring reset spring 113 is used to reset the washing ring diaphragm 112 to the direction of the washing ring drainage pipe 1112, so as to block the washing ring drainage pipe 1112.

[0047] Similarly to the washing ring drainage structure 11, the main flushing drainage structure 21 comprises a main flushing cavity 211 and a main flushing diaphragm 212. The main flushing cavity 211 is provided with a main flushing drain port 2111 and a main flushing drainage pipe 2112. The main flushing diaphragm 212 is movably fitted in the main flushing cavity 211, so that the main flushing cavity 211 is divided into a main flushing back pressure cavity 211a and a main flushing drainage cavity 211b, and is provided with a main flushing water replenishing hole 211c for connecting the main flushing back pressure cavity 211a and the main flushing drainage cavity 211b. The main flushing drain port 2111 is connected to the main flushing back pressure cavity 211a, and the main flushing pressure pack 2 and the main flushing drainage pipe 2112 are both connected to the main flushing drainage cavity 211b. When the main flushing pressure pack 1 supplies water, the water enters the main flushing drainage cavity 211b and then enters the main flushing back pressure cavity 211a through the main flushing water replenishing hole 211c, so that the pressure of the main flushing back pressure cavity 211a increases. When the main flushing drain port 2111 is opened, the main flushing back pressure cavity 211a is drained, so that the pressure decreases, and the main flushing diaphragm 212 moves away from or approaches the main flushing drainage pipe 2112 to block or open the main flushing drainage pipe 2112 according to the change of the pressure of the main flushing back pressure cavity 211a.

[0048] Further, the main flushing drainage structure 21 further comprises a main flushing reset spring 213 arranged in the main flushing back pressure cavity 211a. The main flushing reset spring 213 is used to reset the main flushing diaphragm 212 to the direction of the main flushing drainage pipe 2112, so as to block the main flushing drainage pipe 2112.

[0049] Generally, in order to realize the relative position communication among the above-mentioned washing ring pressure package 1, main flushing pressure package 2 and delay device 3, a hard or soft water pipe can be used for connection, and the communication among the internal relative positions can be realized by the design of internal waterway, which is not described herein.

[0050] Reference Figure 9 The water drainage direction of the present application is shown as follows: (1) When the user presses the opening valve 7 to open the washing ring drainage structure 11, the water in the washing ring pressure package 1 is discharged through the washing ring drainage pipe 1112 and enters the first water passing cavity 811 of the water outlet box 8, and then is discharged through the first outlet 814. Most of the water flows into the washing ring waterway of the toilet through the first three-way pipe 4 to flush the side wall of the toilet bowl, and a small part of the water flows into the delay device 3 through the first three-way pipe 6; (2) As the water flow in the movable cavity 311 is replenished, the water pressure increases, which pushes the delay diaphragm 32 and delay piston seat 33 to move, the delay elastic member 34 is compressed, the water passing channel 317 is opened, the second interface 313 and the third interface 314 are communicated, the main flushing back pressure cavity 211a of the main flushing drainage structure 21 is opened to start water discharge, and then the main flushing drainage structure 21 is opened, the water in the main flushing pressure package 2 is discharged through the main flushing drainage pipe 2112 and enters the second water passing cavity 812 of the water outlet box 8, and then is discharged through the second outlet 816 and flows into the main flushing waterway of the toilet to flush the sewage outlet of the toilet bowl; (3) Due to the setting of the delay device 3, the main flushing water and the washing ring water can reach the sewage outlet at the same time, which effectively improves the siphon effect of the sewage outlet, and then the dirt is flushed cleanly.

[0051] The above-mentioned embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by any ordinary skilled person in the art shall be considered as not departing from the scope of the present application.

Claims

1. A mechanical delay mechanism for a pressure flushing system, characterized by: Including wash ring pressure pack, main flush pressure pack and delay device; The wash ring pressure bag is provided with a wash ring drainage structure, and the main flushing pressure bag is provided with a main flushing drainage structure; The delay device includes a delay body, a delay diaphragm, a delay piston seat, and a delay elastic member; the delay body is provided with an active cavity, a first interface, a second interface, and a third interface, the first interface being in communication with the active cavity, and the second interface being in communication with the third interface; the delay diaphragm is provided in the active cavity and is driven by water pressure; the delay piston seat moves synchronously with the delay diaphragm and connects or blocks the second interface and the third interface; the delay elastic member acts on the delay piston seat and resets it to a state of blocking the second interface and the third interface; The first interface is connected to the wash circle drainage pipe of the wash circle drainage structure; the second interface is connected to the main flushing drain port of the main flushing drainage structure; and the third interface is used for drainage.

2. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: A water outlet is provided between the active cavity and the first interface. The periphery of the delay diaphragm is fixed to the side wall of the active cavity. The delay piston seat and the water outlet are respectively located on both sides of the delay diaphragm.

3. The mechanical delay mechanism of the pressure flushing system according to claim 2, characterized in that: The delay device also includes a through-hole needle that moves synchronously with the delay diaphragm and the delay piston seat. The through-hole needle is movably arranged in the water outlet and is gap-matched with the side wall of the water outlet.

4. The mechanical delay mechanism of the pressure flushing system according to claim 2, characterized in that: The inner wall of the movable cavity is provided with an annular flange surrounding the water outlet; under the action of the delay elastic member, the delay diaphragm is attached to the end surface of the annular flange.

5. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: A water passage coaxial with the delay piston seat is provided in the delay body, and the two ends of the water passage are respectively connected with the second interface and the third interface; the delay piston seat is provided with a piston rod movably passed through the water passage to open or close the water passage.

6. The mechanical delay mechanism of the pressure flushing system according to claim 5, characterized in that: The side wall of the water passage is provided with a V-shaped sealing ring, the circumferential surface of the piston rod is dynamically sealed with the inner surface of the V-shaped sealing ring, and a circle of water groove is provided; when the water groove is opposite to the V-shaped sealing ring, the inner surface of the V-shaped sealing ring does not contact the bottom of the water groove, thereby opening the water passage and making the second interface connected with the third interface.

7. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: The time-delay elastic member is a spring.

8. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: The delay body includes a delay upper cover, a delay partition and a delay lower shell which are designed separately and assembled into one body; the active chamber is formed between the delay partition and the delay lower shell, the delay lower shell is connected with the first interface, the delay upper shell is connected with the second interface and the third interface, the connection between the delay upper shell and the delay lower shell presses and fixes the periphery of the delay diaphragm, and the delay elastic member is arranged between the delay piston seat and the delay partition.

9. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: A first tee is provided between the first interface and the wash basin drain pipe, two ports of the first tee are connected to the first interface and the wash basin drain pipe respectively, and the remaining port is connected to the wash basin water channel of the toilet; It also includes a pressure-stabilizing valve connected to a water source; a second tee is provided at the water outlet of the pressure-stabilizing valve, and two outlets of the second tee are respectively connected to the wash ring pressure bag and the main flushing pressure bag; It also includes an opening valve connected to the wash ring drain port of the wash ring drainage structure.

10. The mechanical delay mechanism of the pressure flushing system according to claim 1, characterized in that: The water outlet box further comprises a water outlet box comprising 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, a first inlet and a first outlet which are connected to the first water passage cavity, and a second inlet and a second outlet which are connected to the second water passage cavity; The first inlet is connected to the wash ring drainage pipe of the wash ring drainage structure, and the first outlet is simultaneously connected to the first interface and the wash ring water path of the toilet; the second inlet is connected to the main flush drainage pipe of the main flush drainage structure, and the second outlet is connected to the main flush water path 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.

Images