A delayed flush valve and sanitary ware

Abstract

This invention relates to the field of flushing valve technology, and discloses a delayed flushing valve and sanitary ware. The delayed flushing valve includes a shell, a valve core assembly, and an adjusting plate. The valve core assembly includes a core body, a probe, and a first elastic element. The core body has a water-stopping part and a partition part. The partition part has a water passage hole. The probe passes through the water passage hole, leaving a water passage channel between the probe and the wall of the water passage hole. The probe has a plug, and a water passage groove is defined between the plug and the end of the water passage hole. The water passage area of ​​the water passage groove is smaller than the water passage area of ​​the water passage channel. The first elastic element applies an elastic force to the probe, causing it to move towards the pressure chamber. The adjusting plate is movable relative to the mounting port to change the initial distance between the contact surface on the adjusting plate and the probe. The probe can contact the contact surface when the core body is pressed. This invention changes the timing of probe contact by changing the initial distance between the contact surface and the probe, thereby changing the probe's reset stroke and achieving multi-level water efficiency adjustment.

Description

Technical Field

[0001] This invention relates to the field of flushing valve technology, and in particular to a delayed flushing valve and sanitary ware. Background Technology

[0002] Patent CN218713650U discloses a delayed-release water device for squat toilets, which mainly comprises a valve body, a push rod, a floating module, a water efficiency adjustment module, and an anti-siphon module. In this technical solution, the adjusting screw extends directly into the negative pressure chamber, and rigidly collides and impacts with the push-driven floating module at the end of each flush stroke. During long-term use, the high-frequency rigid impact may cause the preload of the connection between the adjusting screw and the pressure cap to gradually be lost, leading to loosening of the threads or even rotational slippage. Once the adjusting screw loosens or comes out, its initial length extending into the negative pressure chamber will change, directly causing the limit stroke to deviate, resulting in deviation or even failure of the water efficiency adjustment function.

[0003] Patent CN202023238U discloses a concealed dual-speed dual-control flushing valve, which comprises a concealed box, valve body, large floating valve core, small floating valve core, large control button assembly, small control button assembly, and delay mechanism. While this technical solution achieves water-saving functionality with dual-speed dual-control, it employs a parallel dual-valve core expansion architecture. This "parallel" architecture dictates that adding a third or more speeds requires adding corresponding flushing holes, floating valve cores, delay rods, and delay caps to the valve body, essentially replicating the existing structure. This not only multiplies the valve body's length and volume but also severely limits the installation space of the concealed box, lacking flexible expansion capabilities in product design. Summary of the Invention

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in related technologies. To this end, this invention proposes a time-delayed flushing valve that is compact in structure, intuitive in operation, and avoids rigid collisions. It also features water efficiency adjustment, achieving a balance between water conservation and excellent flushing performance.

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

[0006] The present invention also proposes a sanitary ware having the above-mentioned delayed flushing valve.

[0007] A delayed flushing valve according to a first aspect embodiment of the present invention includes:

[0008] The outer shell has a first cavity and a second cavity, which are connected by a communication port, and the second cavity has a water outlet.

[0009] A valve core assembly includes a core, a probe, and a first elastic element. The core has a water-stopping part and a partition part. The water-stopping part can move with the core to block or open the communication port. The partition part divides the first cavity into a water inlet cavity and a pressure cavity. The water inlet cavity has a water inlet, and the pressure cavity has an installation port. The partition part is provided with a water passage hole. The probe passes through the water passage hole, and a water passage channel is left between the probe and the wall of the water passage hole. The water passage channel connects the water inlet cavity and the pressure cavity. The probe has a plug at one end near the water inlet cavity. The plug can abut against the end of the water passage hole near the water inlet cavity. A water passage groove is defined between the plug and the end of the water passage hole. The water passage groove connects the water passage channel and the water inlet cavity, and the water passage area of ​​the water passage groove is smaller than the water passage area of ​​the water passage channel. The first elastic element abuts between the core and the probe. The first elastic element applies an elastic force to the probe to move it towards the pressure cavity.

[0010] An adjustment plate is provided on the mounting port. The adjustment plate has an abutment surface on the side near the probe. The adjustment plate can move relative to the mounting port to change the initial distance between the abutment surface and the probe. The probe can abut against the abutment surface when the core is pressed.

[0011] The delayed flushing valve according to embodiments of the present invention has at least the following beneficial effects:

[0012] 1. When the core is pressed, it moves axially. The probe contacts the adjustment plate first and forms a stop. At this time, the core continues to move so that the plug is disengaged from the water passage hole. After the pressing pressure disappears, the core enters the reset stage. The core moves in the opposite direction and the first elastic element drives the probe to reset. Since the water passage area of ​​the water passage groove is smaller than that of the water passage channel, when the plug is separated from the end of the water passage hole, the pressure chamber relies on the water passage channel to enter the water, and the water inlet speed is relatively fast. When the probe resets, that is, the plug abuts against the end of the water passage hole, the water inlet of the pressure chamber must pass through the water passage groove, and the water inlet speed becomes slower. Therefore, the water inlet speed of the pressure chamber is different before and after the probe resets, and the water inlet speed of the pressure chamber directly affects the reset time of the core. This invention changes the timing of the probe's contact by changing the initial distance between the contact surface on the adjustment plate and the probe, thereby changing the probe's reset stroke. The longer the reset stroke, the faster the water inlet speed of the pressure chamber and the shorter the delay time of the flushing valve. Conversely, the shorter the reset stroke, the longer the delay time of the flushing valve. This achieves precise control of the flushing volume and achieves the purpose of multi-level water efficiency adjustment, meeting the water-saving needs of different flushing scenarios without increasing the valve body volume.

[0013] 2. This invention adjusts water efficiency by changing the timing of probe contact and the water flow area of ​​the water passage. The probe and the adjustment plate achieve adaptive contact through the first elastic element, eliminating rigid impact and fundamentally avoiding problems such as loose threads and adjustment failure caused by rigid collision.

[0014] According to some embodiments of the present invention, the plug is made of an elastic material, and the plug can elastically deform with the change of water pressure in the water inlet chamber, so that the water passage area of ​​the water passage groove decreases when the pressure in the water inlet chamber increases; or, the end of the water passage hole near the water inlet chamber is made of an elastic material, and the plug can squeeze the end under the action of water pressure in the water inlet chamber, causing the end to elastically deform, so that the water passage area of ​​the water passage groove decreases when the pressure in the water inlet chamber increases.

[0015] According to some embodiments of the present invention, the top of the plug has a notch, and the notch and the end of the water passage hole form the water passage groove; or, the end of the water passage hole has a notch, and the notch and the plug form the water passage groove.

[0016] According to some embodiments of the present invention, a directional ring is further included, which is fixed in the pressure chamber. The directional ring has a through hole. When the water is turned off, the other end of the probe is located in the through hole. When the core is pressed, the probe reaches the contact surface through the through hole.

[0017] According to some embodiments of the present invention, the adjusting disc is rotatably mounted on the mounting port, the abutting surface has at least two abutting portions with different axial heights, and the abutting portions are distributed circumferentially along the adjusting disc.

[0018] According to some embodiments of the present invention, a directional ring is further included, the directional ring being fixedly disposed in the pressure chamber, the directional ring having a first annular wall, the inner peripheral wall of the first annular wall being provided with at least two grooves along the circumferential direction, the adjusting disk being provided with a protrusion, the protrusion being able to slide into or out of the groove when the adjusting disk is rotated.

[0019] According to some embodiments of the present invention, a fixing seat is further included, the fixing seat having a second annular wall, the outer peripheral wall of the second annular wall being threadedly connected to the inner peripheral wall of the mounting port, and the adjusting disc being located within the space enclosed by the fixing seat and the directional ring to prevent the adjusting disc from moving axially.

[0020] According to some embodiments of the present invention, a handwheel is also included, the handwheel being located outside the mounting port and connected to the adjusting disc.

[0021] According to some embodiments of the present invention, a second elastic element is provided in the pressure chamber, and the second elastic element applies an elastic force to the core to move it in the direction of blocking the communication port.

[0022] According to some embodiments of the present invention, the inner peripheral wall of the water passage is formed with a first flange, the outer peripheral wall of the probe is provided with a second flange, and the first elastic member abuts between the first flange and the second flange.

[0023] According to some embodiments of the present invention, a pressing mechanism is also included, which is capable of driving the adjusting disc to move axially.

[0024] A sanitary ware according to a second aspect of the present invention includes the delayed flush valve.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is an exploded view of the delayed flushing valve of the present invention;

[0028] Figure 2 This is a cross-sectional view of the delayed flushing valve of the present invention in the closed state;

[0029] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0030] Figure 4 This is a cross-sectional view of the delayed flushing valve of the present invention in the pressed state (the adjusting disc is in the first position, the probe reset stroke is the longest, and the delay time of the flushing valve is the shortest). Figure 4 The dashed arrow in the middle indicates the direction of water discharge.

[0031] Figure 5 This is a cross-sectional view of the delayed flushing valve of the present invention in the pressed state (the adjusting disc is rotated to the second position, the probe reset stroke is moderate, and the delay time of the flushing valve is moderate).

[0032] Figure 6 This is a cross-sectional view of the delayed flushing valve of the present invention in the pressed state (when the adjustment disc is rotated to the third position, the probe reset stroke is the shortest and the delay time of the flushing valve is the longest).

[0033] Figure 7 This is a structural diagram of the plug of the present invention;

[0034] Figure 8 This is a structural diagram of the adjusting disc of the present invention;

[0035] Figure 9 This is a structural diagram of the directional ring of the present invention.

[0036] Reference numerals: outer shell 100, water inlet chamber 110, water inlet 111, pressure chamber 120, mounting port 121, second chamber 130, water outlet 131, connecting port 140, core 200, water stop part 210, partition part 220, water passage hole 221, water passage channel 222, end 223, first flange 224, probe 300, plug 310, water passage groove 311, notch 312, second flange 320, first elastic element 400, adjusting plate 500, abutment surface 510, spring arm 520, protrusion 521, directional ring 600, through hole 610, first annular wall 620, groove 621, fixing seat 700, second annular wall 710, handwheel 800, second elastic element 900. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] Reference Figure 1-6 , Figure 8 A delayed flushing valve, comprising:

[0039] The outer shell 100 has a first cavity and a second cavity 130, which are connected by a communication port 140, and the second cavity 130 has a water outlet 131.

[0040] The valve core assembly includes a core body 200, a probe 300, and a first elastic element 400. The core body 200 has a water-stopping part 210 and a dividing part 220. The water-stopping part 210 can move with the core body 200 to block or open the communication port 140. The dividing part 220 divides the first cavity into a water inlet chamber 110 and a pressure chamber 120. The water inlet chamber 110 has a water inlet 111, and the pressure chamber 120 has a mounting port 121. The dividing part 220 is provided with a water passage hole 221. The probe 300 passes through the water passage hole 221, and a water passage channel 222 is left between the probe 300 and the wall of the water passage hole 221. The water passage channel 222 connects to the water inlet chamber 110. The probe 300 has a plug 310 at one end near the water inlet chamber 110, which is connected to the pressure chamber 120. The plug 310 can abut against the end 223 of the water passage 221 near the water inlet chamber 110. A water passage groove 311 is defined between the plug 310 and the end 223 of the water passage 221. The water passage groove 311 connects the water passage 222 and the water inlet chamber 110, and the water passage area of ​​the water passage groove 311 is smaller than the water passage area of ​​the water passage 222. The first elastic member 400 abuts against the core 200 and the probe 300. The first elastic member 400 applies an elastic force to the probe 300 to move it toward the pressure chamber 120.

[0041] An adjustment disc 500 is disposed on the mounting port 121. The adjustment disc 500 has an abutment surface 510 on the side near the probe 300. The adjustment disc 500 is movable relative to the mounting port 121 to change the initial distance between the abutment surface 510 and the probe 300. The probe 300 can contact the abutment surface 510 when the core 200 is pressed. The pressing stroke of the core 200 is not less than the stroke of the probe 300 reaching the abutment surface 510.

[0042] The outer casing 100 also has a third cavity for mounting a push rod (not shown in the figure). The push rod is coaxial with the core 200, and pressing the push rod can push the core 200. The configuration of the push rod is prior art and will not be described in detail here.

[0043] Working principle: When the core 200 is pressed by an external force, the core 200 is displaced axially, the water stop 210 is disengaged from the connecting port 140, the water inlet 111 is connected to the water outlet 131, and at the same time, the water in the pressure chamber 120 is squeezed into the water inlet chamber 110 through the water hole 221, the pressure chamber 120 shrinks, and as the core 200 moves, the probe 300 first contacts the contact surface 510 of the regulating plate 500 and forms a stop. At this time, the core 200 continues to move, the first elastic element 400 is compressed, and the plug 310 is disengaged from the water passage 221 until the core 200 completes the entire pressing stroke; after the pressing external force disappears, it enters the reset stage. The core 200 can gradually move in the opposite direction to reset under its own weight or the action of the elastic element, the pressure chamber 120 gradually increases, and water flows into the pressure chamber 120 through the water passage 222. As the core 200 resets, the first elastic element 400 drives the probe 300 to reset as well. The plug 310 gradually approaches the water passage 221. Since the water passage area of ​​the water passage groove 311 is smaller than that of the water passage channel 222, when the plug 310 separates from the end 223 of the water passage 221, the pressure chamber 120 receives water through the water passage channel 222 at a relatively fast rate. When the probe 300 completes its reset, i.e., the plug 310 comes into contact with the end 223 of the water passage 221, the water entering the pressure chamber 120 must pass through the water passage groove 311, and the water entering speed slows down. Therefore, the water entering speed of the pressure chamber 120 is different before and after the probe 300 resets, and the water entering speed of the pressure chamber 120 directly affects the reset time of the core 200. Based on this, the contact timing of the probe 300 is changed by altering the initial distance between the contact surface 510 on the regulating disc 500 and the probe, thereby changing the reset stroke of the probe 300. A longer reset stroke results in a faster water inlet velocity into the pressure chamber 120 and a shorter delay time for the flushing valve; conversely, a shorter reset stroke results in a longer delay time for the flushing valve (e.g., ...). Figure 4-6 As shown in the figure, this achieves precise control of the flushing volume and realizes the purpose of multi-level water efficiency adjustment.

[0044] In some embodiments of the present invention, the plug 310 is made of an elastic material, and the plug 310 can undergo elastic deformation with the change of water pressure in the water inlet chamber 110, so that the water passage area of ​​the water passage groove 311 decreases when the pressure in the water inlet chamber 110 increases; or, the end 223 of the water passage hole 221 near the water inlet chamber 110 is made of an elastic material, and the plug 310 can squeeze the end 223 under the action of water pressure in the water inlet chamber 110, causing the end 223 to undergo elastic deformation, so that the water passage area of ​​the water passage groove 311 decreases when the pressure in the water inlet chamber 110 increases. As the core 200 approaches the connecting port 140, the flow rate from the inlet chamber 110 to the outlet 131 gradually decreases, while the water pressure in the inlet chamber 110 gradually increases. This increased water pressure compresses the elastic plug 310 or the end 223 of the water passage hole 221, reducing the water passage area of ​​the water passage groove 311 and decreasing the amount of water flowing into the pressure chamber 120. Consequently, the downward movement speed of the core 200 slows down. The elastic material allows the water passage area of ​​the water passage groove 311 to adapt to the current water pressure in real time, forming a pressure-adaptive throttling damping effect. The flow rate attenuation rate automatically matches the water hammer pressure intensity, effectively suppressing the harmonic superposition of pressure oscillations, thus achieving a low water hammer effect during the sealing of the connecting port 140.

[0045] In some embodiments of the present invention, such as Figure 7 As shown, the top of the plug 310 has several V-shaped notches 312 along the circumferential direction, and the notches 312 and the end 223 of the water passage hole 221 form a water passage groove 311; or, the end 223 of the water passage hole 221 has several V-shaped notches 312 along the circumferential direction, and the notches 312 and the plug 310 form a water passage groove 311. When the plug 310 or the end 223 of the water passage hole 221 is made of an elastic material, the V-shaped notches 312 are more likely to undergo opening and closing deformation, thereby changing the water passage area.

[0046] In some embodiments of the present invention, such as Figure 2 and Figure 9 As shown, it also includes a directional ring 600, which is fixed in the pressure chamber 120. The directional ring 600 has a through hole 610. In the water-off state, the other end of the probe 300 is located in the through hole 610. When the core 200 is pressed, the probe 300 reaches the contact surface 510 through the through hole 610. The probe 300 being located in the through hole 610 can restrict the core 200 to move only along the axial direction and prevent circumferential rotation.

[0047] In some embodiments of the present invention, the adjusting disk 500 is rotatably mounted on the mounting port 121, and the abutment surface 510 has at least two abutment portions with different axial heights, and the abutment portions are distributed circumferentially along the adjusting disk 500. The abutment surface 510 can be a stepped surface, an inclined surface, or a spiral surface. Rotating the adjusting disk 500 so that different abutment portions are aligned with the probe 300, thereby changing the initial distance between the abutment surface 510 and the probe 300. In this embodiment, there are three abutment portions, forming a stepped structure. The three abutment portions correspond to three positions: the highest abutment portion corresponds to the first position, the middle-height abutment portion corresponds to the second position, and the lowest abutment portion corresponds to the third position. Rotating the adjusting disk allows switching between positions.

[0048] In some embodiments of the present invention, such as Figure 8-9 As shown, it also includes a directional ring 600, which is fixed in the pressure chamber 120. The directional ring 600 has a first annular wall 620, and the inner circumferential wall of the first annular wall 620 is provided with at least two grooves 621 along the circumferential direction. The adjusting disk 500 is provided with a protrusion 521, which can slide into or out of the groove 621 when the adjusting disk 500 rotates. Specifically, the adjusting disk 500 is provided with a plurality of spring arms 520 along the circumferential direction, and at least one spring arm 520 is provided with a protrusion 521. When the adjusting disk 500 is rotated to a specific position, the protrusion 521 can slide into the corresponding groove 621 of the directional ring 600, thereby producing a clear tactile feedback and a "click" sound.

[0049] In some embodiments of the present invention, such as Figure 1-2 As shown, the system also includes a fixed base 700, which has a second annular wall 710. The outer peripheral wall of the second annular wall 710 is threadedly connected to the inner peripheral wall of the mounting port 121. The adjusting disc 500 is located within the space enclosed by the fixed base 700 and the directional ring 600 to prevent axial movement of the adjusting disc 500. An O-ring is provided between the outer peripheral wall of the adjusting disc 500 and the inner peripheral wall of the second annular wall 710 to ensure rotational sealing. An O-ring is also provided between the outer peripheral wall of the second annular wall 710 and the inner peripheral wall of the mounting port 121 to ensure a seal between the fixed base 700 and the housing 100.

[0050] In some embodiments of the present invention, such as Figure 1-2 As shown, it also includes a handwheel 800, located outside the mounting port 121, which is connected to the adjustment disc 500. The housing 100 has graduations, and the handwheel 800 has a pointer. Combined with the interlocking design of the adjustment disc 500 and the directional ring 600, this allows the user to accurately identify and reproduce the desired gear position, avoiding blind adjustments. Furthermore, the handwheel 800 and the adjustment disc 500 are connected by a snap-fit ​​mechanism, allowing for tool-free assembly and disassembly, facilitating production assembly and subsequent maintenance.

[0051] In some embodiments of the present invention, such as Figure 2 As shown, a second elastic element 900 is provided in the pressure chamber 120. The second elastic element 900 applies an elastic force to the core 200, causing it to move in the direction of blocking the communication port 140. Specifically, the second elastic element 900 abuts against the directional ring 600 and the core 200, and the second elastic element 900 is used to assist the core 200 in resetting.

[0052] In some embodiments of the present invention, such as Figure 3 As shown, the inner peripheral wall of the water passage 221 has a first flange 224, and the outer peripheral wall of the probe 300 has a second flange 320. The first elastic element 400 abuts between the first flange 224 and the second flange 320. The first elastic element 400 is located inside the water passage 221, making the structure more compact and less affected by water flow impact. In addition, the first elastic element 400 can also be located below the plug 310, with one end abutting against the water stop part 210 and the other end abutting against the plug 310, which can also apply an elastic force towards the pressure chamber 120 to the probe 300.

[0053] In some embodiments of the invention, a pressing mechanism is also included, which can drive the adjustment disk 500 to move axially. The adjustment disk 500 has at least two different depth positions in the pressing direction of the pressing mechanism, thereby changing the initial distance between the contact surface 510 and the probe 300. In some embodiments, the pressing mechanism may adopt a pressing structure similar to a ballpoint pen, with each press switching one setting.

[0054] A sanitary fixture, comprising the aforementioned delayed flush valve.

[0055] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A delayed flushing valve, characterized in that, include: The outer shell (100) has a first cavity and a second cavity (130), the first cavity and the second cavity (130) are connected by a communication port (140), and the second cavity (130) has a water outlet (131); The valve core assembly includes a core (200), a probe (300), and a first elastic element (400). The core (200) has a water-stopping part (210) and a partition part (220). The water-stopping part (210) is movable with the core (200) to block or open the communication port (140). The partition part (220) divides the first chamber into an inlet chamber (110) and a pressure chamber (120). The cavity (110) has a water inlet (111), the pressure cavity (120) has an installation port (121), the partition (220) is provided with a water passage hole (221), the probe (300) passes through the water passage hole (221), and a water passage channel (222) is left between the probe (300) and the hole wall of the water passage hole (221), the water passage channel (222) connects the water inlet cavity (110) and the water outlet cavity (110). The pressure chamber (120) has a plug (310) on one end of the probe (300) near the water inlet chamber (110). The plug (310) can abut against the end (223) of the water passage hole (221) near the water inlet chamber (110). A water passage groove (311) is defined between the plug (310) and the end (223) of the water passage hole (221). The water passage groove (311) connects the water passage channel (222) and the water inlet chamber (110). The water passage area of ​​the water passage groove (311) is smaller than the water passage area of ​​the water passage channel (222). The first elastic member (400) abuts against the core (200) and the probe (300). The first elastic member (400) applies an elastic force to the probe (300) to move it toward the pressure chamber (120). An adjustment plate (500) is disposed on the mounting port (121). The adjustment plate (500) has an abutment surface (510) on the side near the probe (300). The adjustment plate (500) can move relative to the mounting port (121) to change the initial distance between the abutment surface (510) and the probe (300). The probe (300) can abut against the abutment surface (510) when the core (200) is pressed.

2. The delayed flushing valve according to claim 1, characterized in that, The plug (310) is made of an elastic material. The plug (310) can undergo elastic deformation with the change of water pressure in the water inlet chamber (110), so that the water passage area of ​​the water passage groove (311) becomes smaller when the pressure in the water inlet chamber (110) increases; or, the end (223) of the water passage hole (221) near the water inlet chamber (110) is made of an elastic material. The plug (310) can squeeze the end (223) under the action of water pressure in the water inlet chamber (110), causing the end (223) to undergo elastic deformation, so that the water passage area of ​​the water passage groove (311) becomes smaller when the pressure in the water inlet chamber (110) increases.

3. The delayed flushing valve according to claim 1, characterized in that, The top of the plug (310) has a notch (312), and the notch (312) and the end (223) of the water passage hole (221) form the water passage groove (311); or, the end (223) of the water passage hole (221) has a notch (312), and the notch (312) and the plug (310) form the water passage groove (311).

4. The delayed flushing valve according to claim 1, characterized in that, It also includes a directional ring (600), which is fixed in the pressure chamber (120). The directional ring (600) has a through hole (610). When the water is turned off, the other end of the probe (300) is located in the through hole (610). When the core (200) is pressed, the probe (300) reaches the contact surface (510) through the through hole (610).

5. The delayed flushing valve according to claim 1, characterized in that, The adjusting plate (500) is rotatably mounted on the mounting port (121), and the abutting surface (510) has at least two abutting parts with different axial heights, and the abutting parts are distributed along the circumference of the adjusting plate (500).

6. The delayed flushing valve according to claim 5, characterized in that, It also includes a directional ring (600), which is fixed to the pressure chamber (120). The directional ring (600) has a first annular wall (620). The inner peripheral wall of the first annular wall (620) is provided with at least two grooves (621) along the circumferential direction. The adjusting disk (500) is provided with a protrusion (521). When the adjusting disk (500) rotates, the protrusion (521) can slide into or out of the groove (621).

7. The delayed flushing valve according to claim 6, characterized in that, It also includes a fixing seat (700) having a second annular wall (710), the outer peripheral wall of the second annular wall (710) being threadedly connected to the inner peripheral wall of the mounting port (121), and the adjusting disc (500) being located within the space enclosed by the fixing seat (700) and the directional ring (600) to prevent the adjusting disc (500) from moving axially.

8. The delayed flushing valve according to claim 5, characterized in that, It also includes a handwheel (800) located outside the mounting port (121) and connected to the adjustment disc (500).

9. The delayed flushing valve according to claim 1, characterized in that, It also includes a pressing mechanism that can drive the adjusting disc (500) to move axially.

10. A sanitary ware, characterized in that: Includes the delayed flushing valve as described in any one of claims 1-9.

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