Water valve structure with adjustable flush duration

Abstract

The utility model provides a water valve structure of adjustable flush time, including water valve main part, have an import and a plurality of exports, with set up between the import and export pilot valve, water valve main part has a setting in a plurality of exports between the switch valve, still include: delay valve, have a delay valve chamber with import intercommunication, delay valve chamber top is provided with a pressure relief assembly, delay valve chamber inside can slide a sliding piston group is provided with, start unit structure is opened pressure relief assembly and makes sliding piston group when inside delay valve chamber moves, linkage sliding piston group opens pilot valve, waterway switch mechanism includes the rocker assembly of control switch valve switch outlet waterway and control panel component, control panel component includes with piston synchronous movement's sliding plate, and can detachable setting is in the control panel of sliding plate, is provided with a control groove in control panel, control groove structure is in the piston movement process, accommodate rocker assembly inside sliding further switch outlet waterway and control outlet water length.

Description

Technical Field

[0001] This utility model relates to a water valve structure with adjustable flushing time. Background Technology

[0002] The flush valve is a core component in restrooms, public toilets, and other places used to control the flushing action of toilets or squat toilets. Its function is to quickly open the water circuit to flush away waste when needed, and then automatically close it, taking into account cleanliness, water conservation, and odor prevention.

[0003] Existing technologies, such as the tankless mechanical valve flushing system described in patent number CN114411898B, use a delay setting in the activation chamber to allow a single trigger to control the main control piston to complete a reciprocating motion. During this process, the main control piston controls the water path switching mechanism to switch the water outlet pipe, thereby driving the water flow to complete the entire process of outer ring flushing, jet flushing, and outer ring secondary flushing and water storage. The entire process is completed by mechanical force and does not rely on the electricity of the water tank. However, this mechanism has the following drawbacks: the flushing time is not adjustable. If adjustment is required, the flow channel size must be changed or the delay valve must be adjusted. This adjustment method cannot provide convenient adjustment of the water outlet duration and requires higher costs. Therefore, this utility model designs a water valve structure with adjustable flushing time. Utility Model Content

[0004] This invention provides a water valve structure with adjustable flushing time, which can effectively solve the above problems.

[0005] This utility model is implemented as follows: An adjustable flushing duration water valve structure includes a water valve body having an inlet and multiple outlets, and a pilot valve disposed between the inlet and outlets. The water valve body also includes a switching valve disposed between the multiple outlets. The delay valve has a delay valve chamber that communicates with the inlet, a pressure relief assembly is provided above the delay valve chamber, and a sliding piston assembly is slidably arranged inside the delay valve chamber; The starting unit is configured such that when the pressure relief assembly is opened and the sliding piston assembly moves inside the time delay valve chamber, the sliding piston assembly is linked to open the pilot valve. The water circuit switching mechanism includes a rocker assembly for controlling the switching valve to switch the water outlet circuit and a control plate assembly. The control plate assembly includes a slide plate that moves synchronously with the piston and a control plate that is detachably installed in the slide plate. The control plate is provided with a control groove, which is configured to accommodate the rocker assembly to slide inside during the piston movement, thereby switching the water outlet circuit and controlling the water outlet duration.

[0006] The beneficial effects of this utility model are: the water flow direction in the inlet can be switched to different outlets by the switching valve; during the piston movement, the rocker assembly is housed in the control groove and slides to switch the water outlet path and control the water flow duration; by setting a detachable control board, control boards of different specifications can be replaced. The flushing time of similar products on the market is not adjustable. The control board of this invention can be designed with control grooves of different flushing durations according to customer needs, which is easy to disassemble. Moreover, only control boards of different specifications need to be manufactured, which can also effectively reduce replacement costs. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a three-dimensional assembly structure of a water valve structure with adjustable flushing time according to this utility model. Figure 1 .

[0008] Figure 2 This is a schematic diagram of a three-dimensional assembly structure of a water valve structure with adjustable flushing time according to this utility model. Figure 2 .

[0009] Figure 3 This is an exploded three-dimensional assembly structure diagram of a water valve structure with adjustable flushing time according to this utility model.

[0010] Figure 4 This is a cross-sectional view of the structure of a water valve with adjustable flushing time according to this utility model. Figure 1 .

[0011] Figure 5 This is a cross-sectional view of the structure of a water valve with adjustable flushing time according to this utility model. Figure 2 .

[0012] Figure 6 This is a cross-sectional view of the structure of a water valve with adjustable flushing time according to this utility model. Figure 3 .

[0013] Figure 7 This is a cross-sectional view of the structure of a water valve with adjustable flushing time according to this utility model. Figure 4 .

[0014] Figure 8 This is a schematic diagram of the push-pull rod and the pry plate in the adjustable flushing time water valve structure of this utility model.

[0015] Figure 9 This is a schematic diagram of the control board in a water valve structure with adjustable flushing time according to this utility model.

[0016] Figure 10 This is a schematic diagram of the structure of the present invention, which uses a time-delay valve to open and water pressure to push the piston upward.

[0017] Figure 11This is a schematic diagram of the structure of the delayed-opening pilot valve and the lifting wedge that lifts the lifting wedge of this utility model.

[0018] Figure 12 This is a schematic diagram of the delayed-opening pilot valve and the control lever point of the pilot valve not being pressed by the skid in this utility model.

[0019] Figure 13 This is a schematic diagram of the structure of the present invention, which involves a time-delay valve closing and a piston being driven downward by water pressure.

[0020] Figure 14 This is a schematic diagram of the structure of the present invention, which opens the pilot valve and lifts the wedge block by wedging it in through the second inclined surface.

[0021] Figure 15 This is a schematic diagram of the structure of the pilot valve opening and the control lever point of the pilot valve being pressed by the skid.

[0022] The attached diagram is labeled as follows: 10. Water valve body; 11. Water inlet pipe; 111. Water inlet chamber; 112. Opening and closing chamber; 113. Switching chamber; 12. First water outlet pipe; 13. Second water outlet pipe; 14. Fixed slide rail; 15. Plug; 16. Anti-siphon block; 20. Pilot valve; 21. Elastic diaphragm; 22. Pilot valve plate; 221. First through hole; 23. Pressure relief chamber; 24. Control rod holder; 25. Second through hole; 26. Pilot valve control rod; 261. Second sealing part; 27. Third spring; 28. Third through hole; 30. Delay valve; 31. Delay valve chamber; 311. Inner chamber; 312. Outer chamber; 32. Pressure relief assembly; 321. Pressure relief rod seat; 3211. Pressure relief hole; 322. Pressure relief start rod; 3221. First sealing part; 323. Second spring; 33. Delay rod; 331. Water passage groove; 34. Piston; 35. First spring; 36. Piston rod; 361. Water passage hole; 37. Water inlet hole; 38. Pressure relief switch; 40. One-way starting mechanism; 41. Push-pull rod; 411. Lifting rib; 412. First inclined surface; 413. Second inclined surface; 414. Pin groove; 42. Skid plate; 421. Top pressing part; 422. Lifting wedge block; 50. Switching valve; 60. Flow channel switching component; 61. Turntable; 62. Swing plate; 621. Rocker arm; 63. Slide plate; 64. Control board; 641. Control slot; 6411. Opening slot; 6412. First water outlet section; 6413. Second water outlet section; 6414. Third water outlet section; 642. Buckle; 70. Delay valve switching assembly; 71. Push rod; 72. Toggle lever; 721. Toggle part; 73. Pin; 731. Toggle groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1-3 As shown, a water valve structure with adjustable flushing time includes a water valve body 10 having an inlet and at least one outlet, and a pilot valve 20 disposed between the inlet and the outlet for controlling the flow of water, and further includes; The delay valve 30 has a delay valve chamber 31 that communicates with the inlet. A pressure relief component 32 is provided above the delay valve chamber 31. A sliding piston assembly is provided inside the delay valve chamber 31 to divide the delay valve chamber 31 into an inner chamber and an outer chamber. The sliding piston assembly has a water passage groove 331 that communicates the inner chamber 311 and the outer chamber 312. The one-way starting mechanism 40, which is linked to the sliding piston assembly, is configured such that when the sliding piston assembly moves in only one direction, it acts on the pilot valve 20, opening the pressure relief assembly 32 to allow water to flow into the outer cavity 312 and push the sliding piston assembly to move to the other side of the delay valve cavity 31. The pilot valve 20 is in the closed state, and the one-way starting mechanism 40 does not act on the pilot valve. Closing the pressure relief assembly 32 allows water in the outer cavity 312 to flow through the water channel 331 into the inner cavity 311, resetting the sliding piston assembly. The one-way starting mechanism 40 then opens the pilot valve 20. In one embodiment, the water valve body 10 has an inlet pipe 11, and a first outlet pipe 12 and a second outlet pipe 13 connected to the inlet pipe 11. A [missing information - likely a device or component] is installed inside the inlet pipe 11. The inlet pipe 11 has a first outlet pipe 12 and a second outlet pipe 13. A plug 15 is provided at the end of the inlet pipe 11. An anti-siphon block 16 is installed at the connection between the first outlet pipe 12, the second outlet pipe 13, and the inlet pipe 11. The inlet pipe 11 is provided with a pilot valve 20 for opening / closing the flow channel of the inlet pipe 11 and a switching valve 50 for switching the flow channel. The switching valve 50 can switch the water flow in the inlet pipe 11 to the first outlet pipe 12 or the second outlet pipe 13. In this embodiment, the first outlet pipe 12 is connected to the flushing assembly in the toilet, and the second outlet pipe 13 is connected to the flushing assembly in the toilet. The second outlet pipe 13 acts as a flushing aid, forming a siphon effect to flush away the excrement.

[0025] By setting a delay valve 30 connected to the inlet of the water valve body 10, when the pressure relief assembly 32 is opened, water flows into the outer cavity 312 and pushes the sliding piston assembly to move to the other side of the delay valve cavity 31. The pilot valve 20 is in the closed state, and the one-way starting mechanism 40 does not act on the pilot valve 20. The pressure relief assembly 32 is closed, so the water in the outer cavity 312 enters the inner cavity 311 through the water channel 331, causing the sliding piston assembly to reset. The one-way starting mechanism 40 then opens the pilot valve 20, thereby opening the water passage of the water valve body 10. In this utility model, the water pressure in the main pipeline first acts on the delay valve 30, concentrating the water pressure that pushes the sliding piston assembly. Then, by pushing the sliding piston assembly, the one-way starting mechanism 40 is driven to open the pilot valve 20. Then, by utilizing the principle that the small water pressure of the pilot valve 20 drives the large water pressure, this structural design can be started under low pressure conditions. It does not require increasing the diameter of the delay valve piston to achieve a strong drive, which can save the space of the flush valve.

[0026] This utility model also includes a water path switching mechanism 60, which includes a rocker assembly for controlling the switching valve 50 to switch the water outlet path and a control plate assembly. The control plate assembly includes a slide plate 63 that moves synchronously with the piston and a control plate 64 that is detachably installed in the slide plate 63. The control plate 64 is provided with a control groove 641. The control groove 641 is configured to accommodate the rocker assembly to slide inside it during the piston movement, thereby switching the water outlet path and controlling the water outlet duration. By providing a detachable control plate 64, control plates 64 of different specifications can be replaced. The flushing time of similar products on the market is not adjustable. The control plate 64 of this utility model can be designed with control grooves 641 with different flushing durations according to customer needs.

[0027] This utility model has multiple delay valves 30, and the water passage grooves 331 of the sliding piston assemblies in the multiple delay valves 30 are of different sizes; the delay valve switching component 70 is configured to switch the single delay valve 30 when a single delay valve 30 is activated, thereby controlling the one-way starting mechanism 40 to open the pilot valve 20. By setting water passage grooves 331 of different sizes, the time for water to enter the delay valve chamber 31 is affected, thereby controlling the total flushing time of the flushing valve, triggering the switches on different delay valves 30, and switching the flushing control through the delay valve switching component 70, which can achieve large discharge and / or small discharge effects.

[0028] The structure of each component of this utility model will be described below.

[0029] First, the structure of the delay valve 30 and its working principle in this embodiment will be explained in detail: (Refer to...) Figures 4-5 , Figure 10 , Figure 13As shown, the sliding piston assembly includes a delay rod 33 connected to the pressure relief assembly 32 and a piston 34 slidably disposed within the delay valve chamber 31. The pressure relief assembly 32 includes a pressure relief rod seat 321 disposed at the top of the delay valve chamber 31. A pressure relief hole 3211 is disposed above the pressure relief rod seat 321, and a slidable pressure relief activation rod 322 is installed in the pressure relief hole 3211. The pressure relief activation rod 322 presses against the pressure relief switch 38. In this embodiment, an airbag is disposed within the pressure relief switch 38. The function of the airbag is to press the pressure relief switch 38. The pressure relief process is gentler, providing a better user experience. A first sealing part 3221 is provided on the pressure relief start rod 322, which seals the pressure relief hole 3211. The first sealing part 3221 presses against a second spring 323 below, and the other end of the second spring 323 presses against a delay rod 33. The top of the delay rod 33 has a groove, in which the pressure relief start rod 322 slides. A water passage groove 331 is provided on the side wall of the delay rod 33. The piston 34 divides the delay valve chamber 31 into an inner chamber 311 and an outer chamber. The piston 34 has two parts, upper and lower. A piston rod 36 is installed at the bottom of the piston 34. A piston hole is provided along the axial direction of the piston 34 and piston rod 36. The delay rod 33 is axially aligned and inserted into the piston hole. A water passage hole 361 is provided on the side wall of the piston rod 36. A water inlet hole 37 is provided at the bottom of the delay valve chamber 31. The delay valve chamber 31 is connected to the water inlet pipe 11 through the water inlet hole 37. When the user presses the pressure relief switch 38, the pressure relief start rod 322 moves down and compresses the second spring 323. The first sealing part 3221 separates from the pressure relief hole 3211. The pressure relief assembly 32 is then opened, and the pressure in the inner cavity 311 gradually decreases. Water flows into the outer cavity 312 through the water inlet 37. The piston 34 moves upward and compresses the first spring 35. The user releases the pressure relief switch 38, the second spring 323 resets and pushes the pressure relief start rod 322 upward. The first sealing part 3221 seals the pressure relief hole 3211 and closes the pressure relief assembly 32. Water flows in the water inlet pipe 11 sequentially through the water passage hole 361 and the water passage groove 331 into the inner cavity 311. The first spring 35 resets and pushes the piston 34 downward.

[0030] The structure and working principle of the pilot valve 20 in this embodiment are described in detail below: (Refer to...) Figure 6 , Figure 12 , Figure 15As shown, the water inlet pipe 11 includes an inlet chamber 111 and an opening / closing chamber 112. The pilot valve 20 includes an elastic diaphragm 21 disposed above the opening / closing chamber 112. The elastic diaphragm 21 has a certain elastic limit and isolates the inlet chamber 111 and the opening / closing chamber 112 to prevent water from flowing through the water inlet pipe 11. A pilot valve plate 22 is disposed above the elastic diaphragm 21. A first through hole 221 is provided on the bottom wall of the pilot valve plate 22. A pressure relief chamber 23 is disposed above the pilot valve plate 22. The inlet chamber 111 is connected to the pressure relief chamber 23 through the first through hole 221. A pilot valve actuation assembly is provided on the side wall. The pilot valve 20 actuation assembly includes a control rod fixing seat 24, a second through hole 25 is provided in the control rod fixing seat 24, a slidable pilot valve control rod 26 is provided in the second through hole 25, a second sealing part 261 is provided on the pilot valve control rod 26, the second sealing part 261 isolates the pressure relief chamber 23 and the second through hole 25, a third spring 27 is pressed down below the second sealing part 261, and the other end of the third spring 27 presses against the upper side wall of the opening and closing chamber 112, a third through hole 28 is provided on the upper side wall of the opening and closing chamber 112, and the diameters of the second through hole 25 and the third through hole 28 are larger. When the user presses the pilot valve control lever 26, the second sealing part 261 separates from the second through hole 25. Water in the pressure relief chamber 23 flows sequentially from the pressure relief chamber 23, the second through hole 25, and the third through hole 28 to the opening / closing chamber 112. Because the diameters of the second through hole 25 and the third through hole 28 are larger than the diameter of the first through hole 221, the pressure relief chamber 23 cannot be replenished in time. The pressure in the opening / closing chamber 112 is greater than the pressure in the pressure relief chamber 23. Therefore, the elastic diaphragm 21 rises upwards, allowing water in the inlet chamber 111 to flow to the opening / closing chamber 112. Releasing the pilot valve control lever 26 releases the second sealing part 261. The plug 261 seals the second through hole 25. At this time, water continues to be added to the pressure relief chamber 23, and the pressure in the pressure relief chamber 23 is restored, causing the elastic diaphragm 21 to reset and isolate the water inlet chamber 111 and the opening and closing chamber 112. The core function of the pilot valve 20 is to use a very small control force. In this embodiment, this small control force is the pilot valve starting component. By controlling a small pilot fluid, it indirectly and precisely drives a very large and bulky main valve to open or close. In this embodiment, the large main valve is the elastic diaphragm 21. Therefore, this structure can be used for starting under high pressure conditions.

[0031] The structure and working principle of the one-way starting mechanism 40 in this embodiment are described in detail below: Refer to Figure 3 , Figure 6 , Figures 11-12 , Figures 14-15As shown, a fixed slide rail 14 is provided on the water inlet pipe 11. The one-way starting mechanism 40 includes a push-pull rod 41 connected to the piston rod 36. The push-pull rod 41 is slidably connected to the fixed slide rail 14. A lifting rib 411 is provided on the side wall of the push-pull rod 41. A first inclined surface 412 is provided in front of the lifting rib 411, and a second inclined surface 413 corresponding to the first inclined surface 412 is provided behind the lifting rib 411. A pry plate 42 is pivotally connected above the fixed slide rail 14. A pressing part 421 is provided at the other end of the pry plate 42. The pressing part 421 presses against the pilot valve control rod 26. The pressure part 421 is provided with lifting wedges 422 on both sides, corresponding to the first inclined surface 412 and the second inclined surface 413. When the piston rod 36 pushes the push-pull rod 41 to slide upward, the first inclined surface 412 lifts the lifting wedges 422 upward, so that the top pressure part 421 is separated from the pilot valve control rod 26. When the piston rod 36 pushes the push-pull rod 41 to slide downward, the lifting wedges 422 wedge into the second inclined surface 413 from below, so that the top pressure part 421 presses down on the pilot valve control rod 26. The one-way starting mechanism 40 of this utility model is not affected by the flow pressure and will not jam during use.

[0032] The structure and working principle of the flow channel switching component 60 in this embodiment are described in detail below: Refer to Figure 3 , Figure 6 , Figures 11-12 , Figures 14-15As shown, the flow channel switching assembly 60 includes a switching chamber 113 located in front of the inlet pipe 11. The switching chamber 113 is connected to the first outlet pipe 12 and the second outlet pipe 13. A rotatable switching valve 50 is installed inside the switching chamber 113. The switching valve 50 includes an arc-shaped stop, which is used to block the passage from the inlet pipe 11 to the first outlet pipe 12 and the second outlet pipe 13. A fixed rod is installed above the arc-shaped stop. The rocker assembly includes a turntable 61 connected above the switching valve 50. The arc-shaped stop is connected to the center of the turntable through the fixed rod. A protrusion is provided on the side wall of the turntable 61, and a mounting hole is provided inside the protrusion. A swing disk 62 is connected above the turntable 61. The swing disk 62 rotates around one end of the turntable. A mounting rod is provided at the other end of the swing disk 62 and is installed in the mounting hole. A rocker arm 621 is provided above the swing disk 62. By moving the rocker arm 621, the turntable 61 rotates, thereby driving the switching valve 50 to switch the water flow in the inlet pipe 11 to the first outlet pipe 12 and the second outlet pipe 13. The flow channel switching assembly 60 also includes a slide plate 63 that is slidably mounted above the fixed slide rail 14. The slide plate 63 has an installation groove, and a detachable control plate 64 is provided in the installation groove. The control plate 64 has a control groove 641 that is adapted to the rocker arm 621. The rocker arm 621 is set in the control groove 641. Switching is performed by sliding the rocker arm 621 in the control groove 641. By providing a detachable control plate 64, control plates of different specifications can be replaced. The control groove in the control plate 64 can be set to different lengths to control the flushing time. The specific scheme is as follows: In this embodiment, the control slot 641 includes an open slot 6411 disposed at the bottom of the control plate 64, a first water outlet section 6412 connected to the open slot 6411, a second water outlet section 6413 bent and connected to the first water outlet section 6412, and a third water outlet section 6414 bent and connected to the second water outlet section 6413. When the push-pull rod 41 pushes the slide plate 63 upward, the rocker arm 621 slides sequentially from the third water outlet section 6414, the second water outlet section 6413, and the first water outlet section 6412 to the open slot 6411. At this time, the pilot valve 20 is closed to seal and replenish the water inlet pipe 11. When the push-pull rod 41 pushes the slide plate 63 downward, the rocker arm 621 slides from the open slot 6411 to the first water outlet section 6412. At the end of the first water outlet section 6412, the pilot valve 20 is opened, and the water flows from the inlet pipe 11 to the first water outlet pipe 12. The rocker arm 621 slides from the end of the first water outlet section 6412 to the end of the second water outlet section 6413, and the water flows from the inlet pipe 11 to the second water outlet pipe 13. The rocker arm 621 slides from the end of the second water outlet section 6413 to the end of the third water outlet section 6414, and the water flows from the inlet pipe 11 to the first water outlet pipe 12 for supplementary flushing. Then the pilot valve 20 is closed. A buckle 642 is provided on the top of the control panel 64, and a corresponding slot is provided on the slide plate 63. The buckle is set in the slot to achieve quick disassembly and replacement. The operation is simple, the function is powerful, and the user experience is better.

[0033] The structure and working principle of the delay valve switching component 70 in this embodiment are described in detail below: (Refer to...) Figures 1-3 As shown, there are two delay valves 30, which are respectively connected to the first water outlet pipe 12 and the second water outlet. The diameter of the water passage hole 361 of the piston rod 36 of one delay valve 30 is larger than that of the water passage hole 361 of the piston rod 36 of the other delay valve 30. There are two push-pull rods 41 connected to the piston rod 36, which are arranged on both sides of the lifting rib 411. The system further includes a delay valve switching assembly 70 connected to the two delay valves 30. The delay valve switching assembly 70 includes a push rod 71 connected to the pressure relief switch 38. The other end is connected to a lever 72 rotatably mounted on a fixed slide rail 14. The other end of the lever 72 is provided with a toggle part 721. A pin 73 is slidably mounted above the fixed slide rail 14 between two push-pull rods 41. The push-pull rod 41 is provided with a pin groove 414 corresponding to the pin 73. The middle of the pin 73 is provided with a toggle groove 731 corresponding to the toggle part 721. When the pressure relief switch 38 is pressed, the lever 72 toggle the pin 73, causing the pin 73 to insert into the pin groove 414 on the push-pull rod 41 corresponding to the delay valve 30, thereby activating the flush valve.

[0034] The working principle and specific implementation steps of this utility model are explained in detail below.

[0035] Reference Figure 10 As shown, by pressing the pressure relief switch 38 and then pressing the pressure relief start rod 322, the first sealing part 3221 separates from the pressure relief hole 3211, relieving pressure on the piston inner cavity 311. Water from the inlet pipe 11 enters the piston outer cavity 312 through the inlet hole 37. The water flow pushes the piston 34 upward and compresses the first spring 35. The piston rod 36 then drives the push-pull rod 41 upward. (Refer to...) Figures 11-12 As shown, at this time, the pry bar 42 is lifted by the lifting wedge block 422, the pry bar 42 is separated from the pilot valve control rod 26, the second sealing part 261 seals the second through hole 25, the elastic diaphragm 21 isolates the water inlet chamber 111 and the opening and closing chamber 112, the pilot valve 20 is in the closed state, at this time the water pressure in the water inlet pipe 11 is all applied to the piston 34, and at the same time the push-pull rod 41 pushes the slide plate 63 to move upward, and the rocker arm 621 slides sequentially from the third water outlet section 6414, the second water outlet section 6413, and the first water outlet section 6412 in the control plate 64 to the opening slot 6411; Reference Figure 13As shown, when the pressure relief switch 38 separates from the pressure relief start rod 322, the first sealing part 3221 seals the pressure relief hole 3211, and the inner cavity 311 no longer relieves pressure. Water in the piston outer cavity 312 slowly enters the inner cavity 311 through the water channel 331. Under the spring force of the first spring 35, the piston 34 slowly moves downward, and the piston rod 36 drives the push-pull rod 41 to move downward. (Refer to...) Figures 14-15 As shown, at this time, the lifting wedge 422 is wedged into the second inclined surface 413, the pry bar 42 is pressed down, the top pressing part 421 presses the pilot valve control rod 26, the pilot valve 20 is in the open state, the second sealing part 261 separates from the second through hole 25, and the water flows sequentially from the pressure relief chamber 23, the second through hole 25, and the third through hole 28 to the opening and closing chamber 112. The elastic diaphragm 21 is lifted upward, thereby causing the water in the inlet chamber 111 to flow to the opening and closing chamber 112. Then the water flows into the switching chamber 113, and at the same time the push-pull rod 41 pushes the slide plate 63 downward. When the rocker arm 621 is moved from the opening slot 6411 to the end of the first water outlet section 6412, the pilot valve 20 is opened, and the water flows from the inlet pipe 11 to the first water outlet pipe 12. The rocker arm 621 is moved from the end of the first water outlet section 6412 to the end of the second water outlet section 6413, and the water flows from the inlet pipe 11 to the second water outlet pipe 13. The rocker arm 621 is moved from the end of the second water outlet section 6413 to the end of the third water outlet section 6414, and the water flows from the inlet pipe 11 to the first water outlet pipe 12 for supplementary flushing. Then the pilot valve 20 is closed.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water valve structure with adjustable flushing time, comprising a water valve body (10) having an inlet and multiple outlets, and a pilot valve (20) disposed between the inlet and outlets, wherein the water valve body has a switching valve (50) disposed between the multiple outlets, characterized in that, Also includes: The delay valve (30) has a delay valve chamber (31) communicating with the inlet. A pressure relief assembly (32) is provided above the delay valve chamber (31). A sliding piston assembly is slidably provided inside the delay valve chamber (31). The starting unit is configured such that when the pressure relief assembly (32) is opened and the sliding piston assembly moves inside the delay valve chamber (31), the sliding piston assembly is linked to open the pilot valve (20). The water path switching mechanism (60) includes a rocker assembly that controls the switching valve (50) to switch the water path and a control plate assembly. The control plate assembly includes a slide plate (63) that moves synchronously with the sliding piston assembly and a control plate (64) that is detachably installed in the slide plate (63). A control groove (641) is provided in the control plate (64). The control groove (641) is configured to accommodate the rocker assembly to slide inside it during the movement of the sliding piston assembly, thereby switching the water path and controlling the water output duration.

2. The water valve structure with adjustable flushing time according to claim 1, characterized in that, The water valve body (10) has an inlet pipe (11), a first outlet pipe (12) and a second outlet pipe (13) connected to the inlet pipe (11). The inlet pipe (11) has an inlet, the first outlet pipe (12) has a first outlet, and the second outlet pipe (13) has a second outlet. The water valve body (10) has a switching chamber (113) located between the first outlet and the second outlet. The switching valve (50) is located in the switching chamber (113). The rocker assembly includes a turntable (61) connected to the switching valve (50). A swing plate (62) is connected above the turntable (61). A rocker arm (621) is provided above the swing plate (62). The rocker arm (621) is moved to make the turntable (61) rotate, thereby driving the switching valve (52) to switch the water outlet path.

3. The water valve structure with adjustable flushing time according to claim 2, characterized in that, The starting unit is a one-way starting mechanism (40) linked with the sliding piston assembly. Its structure is such that when the sliding piston assembly moves in only one direction, it acts on the pilot valve (20), opens the pressure relief assembly (32) to allow water to flow into the outer cavity (312) and pushes the sliding piston assembly to move to the other side of the delay valve cavity (31). The pilot valve (20) is in the closed state, and the one-way starting mechanism (40) does not act on the pilot valve. It closes the pressure relief assembly (32) so that the water in the outer cavity (312) enters the inner cavity (311) through the water channel (331) to reset the sliding piston assembly. The one-way starting mechanism (40) then opens the pilot valve (20).

4. The water valve structure with adjustable flushing time according to claim 3, characterized in that, The control slot (641) includes an open slot (6411) located at the bottom of the control plate (64), a first water outlet section (6412) connected to the open slot (6411), a second water outlet section (6413) bent and connected to the first water outlet section (6412), and a third water outlet section (6414) bent and connected to the second water outlet section (643). When the sliding piston assembly moves upward, the rocker arm (621) slides sequentially from the third water outlet section (6414), the second water outlet section (6413), and the first water outlet section (6412) to the open slot (6411), at which time the pilot valve (20) is closed. The one-way starting mechanism (40) does not act on the pilot valve (20). When the sliding piston group moves downward, the rocker arm (621) slides from the opening slot (6411) to the end of the first water outlet section (5712). At this time, the pilot valve (20) is opened, and the water flows from the inlet to the first outlet. The rocker arm (621) slides from the end of the first water outlet section (6412) to the end of the second water outlet section (6413). At this time, the water flows from the inlet to the second outlet. The rocker arm (621) slides from the end of the second water outlet section (6413) to the end of the third water outlet section (6414). The water flows from the inlet to the first outlet for water replenishment.

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