Delay valve core and delay drain valve and sanitary ware using the same

Abstract

The application belongs to the technical field of drain valves, and discloses a time-delay valve core, a time-delay drain valve applying the same and a sanitary ware, wherein the time-delay valve core comprises: a body provided with a water inlet area, a water control flow channel and a water passing area, the water control flow channel being communicated between the water inlet area and the water passing area; a first adjusting member rotatably installed on the body, the water control flow channel being configured to change the water discharge flow to the water passing area with the rotation of the first adjusting member; and according to the water discharge requirement of a product, the water discharge flow of the water control flow channel is adjusted by using the first adjusting member, so that the adjustment of multiple water efficiency is realized, and the time-delay valve core is suitable for different water products. The whole structure is simple, the adjustment is convenient, and the applicability is wide.

Description

[0001] Case Analysis

[0002] This invention is a divisional application of the parent application filed on March 3, 2025, with application number 2025102395865, entitled "Delay Valve Core and Delay Drain Valve and Sanitary Ware Using the Same". Technical Field

[0003] This invention belongs to the field of drain valve technology, and in particular relates to a time-delay valve core and a time-delay drain valve and sanitary ware using the same. Background Technology

[0004] With increasing societal demand for green, environmentally friendly, and energy-saving products, especially flush valves, water efficiency requirements are now demanding at least Level 2. Level 1 water efficiency is ≤5L, Level 2 ≤6L, and Level 3 8L. However, considering the actual flushing performance, the average water consumption cannot be less than 4L. This leaves too small a threshold for controlling the average water consumption: Level 1 is 1L, Level 2 is 2L, and Level 3 is 4L. Many factors influence the average water consumption of toilet flush valves, including the valve itself, the toilet it's paired with, and the drainage pipes connecting the flush valve and the toilet.

[0005] Currently, water-saving technologies for flushing valves generally involve customizing the valve core structure by molding it according to water efficiency requirements at the factory. Adjusting different water efficiency levels requires replacing corresponding water efficiency accessories, such as flow restrictors, constant flow devices, and limit switches, or adding separate flow regulating devices. This results in low product compatibility and high implementation costs. Summary of the Invention

[0006] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a time-delay valve core.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] The present invention also proposes a time-delayed drain valve and a sanitary ware having the above-mentioned time-delayed valve core.

[0009] According to a first aspect of the present invention, a time-delay valve core includes:

[0010] The main body is provided with a water inlet area, a water control channel and a water passage area, wherein the water control channel is connected between the water inlet area and the water passage area;

[0011] A first adjusting member is rotatably mounted on the body, and the water control channel is configured to change the drainage flow rate to the water passage as the first adjusting member rotates.

[0012] The main body is also provided with a water-blocking component, which includes a plate portion and a stepped portion. The plate portion is circular, and the stepped portion is cylindrical with an outer diameter smaller than that of the plate portion. The stepped portion and the plate portion are coaxial. The stepped portion includes a first water-blocking portion and a second water-blocking portion distributed circumferentially. The thickness of the first water-blocking portion in the axial direction is greater than that of the second water-blocking portion in the axial direction.

[0013] The time-delay valve core according to the embodiments of the present invention has at least the following beneficial effects: according to the drainage requirements of the product, the drainage flow of the water control channel is adjusted by the first adjusting element to achieve multi-level water efficiency adjustment, so as to be applicable to different water-using products; the overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0014] According to some embodiments of the present invention, a water tank is provided in the water passage area, a first water inlet communicating with the water inlet area is provided on the water tank, a cover plate is provided on the first adjusting member, the cover plate covers the water tank to define the water control channel between the cover plate and the water tank, and a first water outlet communicating with the water passage area is formed at the position of the water tank not covered by the cover plate.

[0015] According to some embodiments of the present invention, the depth of the water tank gradually decreases from the first inlet to the first outlet.

[0016] According to some embodiments of the present invention, the first adjusting member is provided with a rotating shaft, the water passage area is provided with a connecting cavity and a plurality of slots distributed around the connecting cavity, the water tank extends in an arc shape around the connecting cavity, the rotating shaft is rotatably coaxially inserted into the connecting cavity, an elastic member is provided between the first adjusting member and the water passage area, the elastic member applies an elastic force to the first adjusting member to press it down onto the water tank, and a locking protrusion is provided on the cover plate, the locking protrusion sequentially moving in and out of each of the slots as the first adjusting member rotates.

[0017] According to some embodiments of the present invention, the body includes a first connector and a second connector connected to each other. The first connector has a first frustum surface, on which a plurality of ribs are arranged circumferentially at intervals. The ribs extend radially along the first frustum surface. The first frustum surface also has a groove, the groove being located closer to the center of the first frustum surface than the ribs. The gaps formed between the ribs communicate with the groove. The second connector has a second frustum surface, which abuts against each of the ribs. The gaps between the ribs and the second frustum surface define a plurality of water inlet channels. The second frustum surface and the groove define a buffer channel. Each water inlet channel communicates with the buffer channel to form the water inlet area. The second connector has a water passage area, and the buffer channel communicates between each water inlet channel and the water control channel.

[0018] According to some embodiments of the present invention, the body includes a first connector and a second connector connected to each other. The first connector has a first frustum surface and a groove. The second connector has a second frustum surface. A buffer flow channel is defined between the second frustum surface and the groove. The water inlet area also includes a water passage channel. The water passage channel is formed on the second connector. The water passage channel connects the buffer flow channel and the water control channel. The water passage channel includes a constricted section, a throat section, and a flared section connected in sequence. The constricted section is closer to the buffer flow channel than the flared section. The constricted section gradually narrows towards the throat section. The flared section gradually widens away from the throat section. The minimum inner diameter of the constricted section, the inner diameter of the throat section, and the minimum inner diameter of the flared section are equal.

[0019] According to some embodiments of the present invention, the first connector is provided with a sand storage cavity, the groove is provided with a guide column and a sand discharge port, the guide column is coaxially inserted into the constricted section, the peripheral wall of the guide column is provided with a plurality of flow-blocking grooves, the flow-blocking grooves extend along the axial direction of the guide column, and an elastic adjusting ring is sleeved on the guide column, the adjusting ring abutting against the constricted section; the sand storage cavity is connected to the groove through the sand discharge port.

[0020] According to some embodiments of the present invention, a flow-blocking gap for blocking solid impurities is formed between the first frustum and the second frustum, the flow-blocking gap being disposed around the outer end of each of the ribs.

[0021] According to some embodiments of the present invention, the water-blocking member further includes ribs, the plate is circular, and a plurality of ribs extend axially from the stepped portion in a direction away from the plate, and the plurality of ribs are distributed sequentially at intervals along the circumference of the stepped portion.

[0022] According to some embodiments of the present invention, a plurality of guide grooves are provided on the circumferential sidewall of the first water-blocking part, and the guide grooves are arranged along the axial direction of the stepped part.

[0023] According to a second aspect of the present invention, a time-delayed drain valve includes a time-delayed valve core.

[0024] The delayed-drain valve according to embodiments of the present invention has at least the following beneficial effects: When applied to different products, the delayed-drain valve adjusts the drainage flow rate of the water control channel according to the product's drainage requirements, achieving multi-level water efficiency adjustment to suit different water-using products. The overall structure is simple, adjustment is convenient, and applicability is wide.

[0025] According to a third aspect of the present invention, a sanitary ware includes a time-delay valve core or a time-delay drain valve.

[0026] The sanitary ware according to embodiments of the present invention has at least the following beneficial effects: it facilitates adjustment of delay time and flow rate, and provides a multi-level water efficiency selection mode.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a schematic diagram of the delay valve core.

[0030] Figure 2 This is a schematic diagram of the internal structure of the time-delay valve core;

[0031] Figure 3 yes Figure 2 Another cross-sectional view;

[0032] Figure 4 This is a schematic diagram of the structure of the first adjusting component;

[0033] Figure 5 yes Figure 4 Another perspective illustration;

[0034] Figure 6 This is a structural schematic diagram of the first connector;

[0035] Figure 7 yes Figure 6 A sectional view;

[0036] Figure 8 This is a sectional view of the second connector;

[0037] Figure 9 This is a sectional view of the second connector;

[0038] Figure 10 This is another perspective view of the second connector;

[0039] Figure 11 This is a structural schematic diagram of the water-blocking component;

[0040] Figure 12 This is a schematic diagram of the internal structure of a time-delay drain valve;

[0041] Figure 13 This is a schematic diagram of the shell structure;

[0042] Figure 14 This is a structural breakdown diagram of the adjustment component.

[0043] Reference numerals: Body 100; Water inlet area 10; Water inlet channel 101; Buffer channel 102; Water passage area 103; Water control channel 104; Water tank 105; First water inlet 106; First water outlet 107; Connecting cavity 108; Slot 109; Flow blocking gap 110; First adjusting component 200; Cover plate 210; Snap 211; Rotating shaft 220; Adjusting cavity 230; Protrusion 231; Slot 232; Inclined surface 233; Elastic component 300; First connecting component 400; First frustum 4 10; 420; 430; 431; 432; 433; 434; 440; 450; 400; 410; 511; 520; 521; 522; 523; 530; 600; 610; 620; 621; 622; 623; 623; 630; 600; 610; 620; 621; 622; 623; 630; Housing 700; Inlet chamber 710; Outlet chamber 720; Pressure relief chamber 730; Mounting chamber 740; Second inlet 741; Pressure relief port 742; Drain port 743; Control valve 800; Adjustment assembly 900; Second adjustment component 910; Protrusion 911; Base 920; Rotating component 930; Insertion cavity 931; Shoulder 932; Insert strip 940. Detailed Implementation

[0044] 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.

[0045] The present invention relates to a time delay valve core, comprising a body 100 and a first adjusting member 200.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the main body 100 is provided with a water inlet area 10, a water control channel 104, and a water passage area 103. The water inlet area 10, the water control channel 104, and the water passage area 103 are connected in sequence. A first adjusting member 200 is installed on the main body 100 and can rotate on the main body 100. The water control channel 104 connects the water inlet area 10 and the water passage area 103. The water control channel 104 is configured such that when the first adjusting member 200 rotates, it can change the drainage flow rate from the water control channel 104 to the water passage area 103. When water is supplied, water flows from the water inlet area 10 into the main body 100, then flows into the water control channel 104, and finally flows from the water control channel 104 through the water passage area 103 and is discharged to the outside of the main body 100.

[0047] The present invention also relates to a time-delay drain valve, which utilizes a time-delay valve core. The time-delay drain valve further includes a housing 700 and a control valve 800. (As...) Figure 12 and Figure 13 As shown, the housing 700 includes an inlet chamber 710, an outlet chamber 720, a pressure relief chamber 730, and an installation chamber 740. The installation chamber 740 has a second inlet 741, a pressure relief port 742, and a drain port 743. In this embodiment, the pressure relief port 742 and the drain port 743 are vertically distributed, with the second inlet 741 located on the left side of the installation chamber 740. The second inlet 741 communicates with the inlet chamber 710, the pressure relief port 742 communicates with the upper part of the pressure relief chamber 730, and the outlet chamber 720 is connected below the drain port 743. The outlet chamber 720 also communicates with the lower part of the pressure relief chamber 730. A control valve 800 is installed on the housing 700. The control valve 800 can be a solenoid valve or other manually controlled mechanical valve. The control valve 800 is located at the lower part of the pressure relief chamber 730 and at the connection point between the outlet chamber 720 and the pressure relief chamber 730. The control valve 800 is used to control the connection or disconnection between the pressure relief chamber 730 and the outlet chamber 720. A time-delay valve core is installed in the mounting chamber 740, and moves up and down relative to the mounting chamber 740 as the water pressure in the housing 700 changes. Water from the inlet chamber 710 can flow into the pressure relief chamber 730 through the second inlet 741, the inlet area 10, the water control channel 104, the water passage area 103, and the pressure relief port 742.

[0048] In practical use, the time-delay valve core or time-delay drain valve can be applied to sanitary ware such as urinals and squat toilets. The inlet chamber 710 is connected to an external water supply system, such as a tap water pipe. The outlet chamber 720 is connected to the flushing pipe of the sanitary ware. Under normal conditions, the inlet chamber 710 is kept connected to the external water supply system, and the control valve 800 remains closed to the pressure relief chamber 730 and the outlet chamber 720, meaning that the pressure relief chamber 730 and the outlet chamber 720 are not filled with water. Water from the inlet chamber 710 flows into the pressure relief chamber 730 through the second inlet 741, the inlet area 10, the water control channel 104, the water passage area 103, and the pressure relief port 742, keeping the pressure relief chamber 730 full. At this time, under the water pressure from the inlet chamber 710 and the pressure relief chamber 730, as well as its own gravity, the time-delay valve core descends and remains in the position of blocking the drain port 743. When drainage is required, the control valve 800 is opened, connecting the pressure relief chamber 730 and the outlet chamber 720. Water in the pressure relief chamber 730 is discharged outward through the outlet chamber 720. After the pressure relief chamber 730 is depressurized, the control valve 800 is used to close the pressure relief chamber 730 and the outlet chamber 720. After the pressure relief chamber 730 is depressurized, the delay valve core is lifted upward under the water pressure of the inlet chamber 710, opening the drain port 743. Water is discharged from the inlet chamber 710 through the second inlet port 741, the mounting chamber 740, and the drain port 743 into the outlet chamber 720 and then discharged into the flushing pipe. Simultaneously, water flows into the pressure relief chamber 730 through the second inlet 741, the inlet zone 10, the water control channel 104, the water passage zone 103, and the pressure relief port 742, gradually replenishing the pressure relief chamber 730. The water pressure in the inlet chamber 710 and the pressure relief chamber 730 gradually reaches equilibrium. Under the weight of its own body, the delay valve core gradually descends until it blocks the drain port 743, thus completing the drainage operation. During the water replenishment process of the pressure relief chamber 730, the water replenishment completion time of the pressure relief zone is determined by the drainage flow rate from the water control channel 104 to the water passage zone 103, which also determines the drainage time of the delay drain valve. The delay drain valve is applied to different products. Based on the product's drainage requirements, the drainage flow rate of the water control channel 104 is adjusted using the first regulating element 200 to achieve multi-level water efficiency regulation, making it suitable for different water-using products. The overall structure is simple, easy to adjust, and widely applicable.

[0049] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, the water passage area 103 has a cavity structure, and a water tank 105 is provided on the lower side of the water passage area 103. A first water inlet 106 is provided on the water tank 105. The first water inlet 106 can be located at one end of the water tank 105 and is connected to the water inlet area 10. A cover plate 210 is provided on the first adjusting member 200, and the cover plate 210 is arranged around the central axis of the first adjusting member 200. The shape of the cover plate 210 is determined according to the orientation of the water tank 105. In this embodiment, the water tank 105 extends in an arc shape, and the cover plate 210 is correspondingly set in a fan shape. The cover plate 210 covers the top of the water tank 105, and the lower side of the cover plate 210 defines the aforementioned water control channel 104 between the water tank 105 and the cover plate 210. In order for the water control channel 104 to supply water to the water passage area 103, the cover plate 210 does not completely cover the upper side of the water tank 105. The part of the cover plate 210 that does not cover the water tank 105 constitutes the first outlet 107 of the water control channel 104. The water control channel 104 is connected to the water passage area 103 through the first outlet 107. The first outlet 107 is formed at the end of the water tank 105 away from the first inlet 106. When the first adjusting member 200 is rotated, the coverage area of ​​the cover plate 210 over the water tank 105 is changed, that is, the opening size of the first outlet 107 is changed, thereby adjusting the drainage flow rate of the water control channel 104 to the water passage area 103. When the first outlet 107 is reduced, the drainage flow rate of the water control channel 104 decreases; when the first outlet 107 is expanded, the drainage flow rate of the water control channel 104 increases. The water tank 105 can be configured as a tank with equal depth at all locations. Alternatively, the depth of the water tank 105 can be gradually reduced, decreasing from the first inlet 106 to the first outlet 107. That is, the cross-sectional area of ​​the water control channel 104 gradually decreases from the first inlet 106 to the first outlet 107. When the first adjusting member 200 rotates in the direction that the first outlet 107 expands, the increase in drainage flow rate at the first outlet 107 increases incrementally with the same rotation angle. One, two, or more water tanks 105 can be provided on the water passage area 103, and a cover plate 210 corresponding to the number of water tanks 105 is provided on the first adjusting member 200. One cover plate 210 covers one water tank 105, thus forming multiple water control channels 104. When the first adjusting member 200 rotates, the drainage flow rate of each water control channel 104 increases or decreases synchronously.

[0050] Based on the above embodiments, such as Figure 2 , Figure 3 , Figure 5 and Figure 8As shown, the first adjusting member 200 is provided with a rotating shaft 220. A cover plate 210 extends radially from the circumferential sidewall of the rotating shaft 220. A connecting cavity 108 and a slot 109 are provided in the water passage area 103. Multiple slots 109 are distributed around the connecting cavity 108. A water tank 105 extends in an arc shape around the connecting cavity 108. The rotating shaft 220 is coaxially inserted into the connecting cavity 108, and the first adjusting member 200 rotates relative to the water passage area 103 through the rotational engagement of the rotating shaft 220 and the connecting cavity 108. Each slot 109 is radially formed in the connecting cavity 108. A protruding tab 211 is provided on the lower side of the cover plate 210. The protruding tab 211 can slide into the slot 109. When the first adjusting member 200 rotates, the protruding tab 211 slides out of the current slot 109 and then slides into the next adjacent slot 109. The engagement of the latching protrusion 211 and the slot 109 prevents the first adjusting member 200 from rotating on its own without manual operation, thus positioning the first adjusting member 200 in its current position. An elastic element 300 is provided between the first adjusting member 200 and the water passage area 103. The elastic element 300 can be a spring or similar material. Alternatively, a cover can be installed on the upper side of the water passage area 103, and the elastic element 300 can be fitted onto the first adjusting member 200. The upper end of the elastic element 300 abuts against the lower side of the cover, and the lower end abuts against the upper side of the cover plate 210, so that the elastic element 300 applies an elastic force to the first adjusting member 200, which causes the cover plate 210 to press down onto the water tank 105. When the first adjusting member 200 rotates, the latching protrusion 211 slides into and out of each slot 109 in sequence, and the first adjusting member 200 will bounce up and down under the action of the elastic force. When not rotating, the locking protrusion 211 can remain locked in the slot 109 under the elastic force.

[0051] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8As shown, the main body 100 includes a first connector 400 and a second connector 500 that are interconnected. The first connector 400 and the second connector 500 can be connected to each other by a plug-in connection. For example, a shaft segment 530 extends from the bottom of the second connector 500 and passes downward through the first connector 400. The upper side of the first connector 400 is provided with a first frustum surface 410. The first frustum surface 410 is provided with a plurality of protruding ribs 420, which are distributed sequentially along the circumference of the first frustum surface 410. The protruding ribs 420 extend radially along the first frustum surface 410. The first frustum surface 410 is also provided with a groove 430. The groove 430 is located closer to the center of the first frustum surface 410 than the protruding ribs 420. The protruding ribs 420 are spaced apart, and one end of the gap formed between the protruding ribs 420 is formed on the groove wall of the groove 430. The groove 430 can extend in an arc around the center of the first frustum surface 410. The lower side of the second connector 500 is provided with a second frustum surface 510. The second frustum surface 510 abuts against each of the protruding ribs 420. The gap between each protruding rib 420 and the second frustum surface 510 defines a plurality of water inlet channels 101. A buffer channel 102 is defined between the second frustum surface 510 and the groove 430, and each water inlet channel 101 communicates with the buffer channel 102. Each water inlet channel 101 and the buffer channel 102 constitute the aforementioned water inlet area 10. The buffer channel 102 communicates between each water inlet channel 101 and the water control channel 104. After water enters the mounting cavity 740, the water flows from the circumference of the body 100 into the buffer channel 102 for convergence through each water inlet channel 101. After water enters the buffer channel 102, it gradually fills the buffer channel 102, accumulating static pressure energy for the subsequent fluid to enter the water control channel 104. After the buffer channel 102 is filled with water, it is then transported to the water control channel 104. The aforementioned water passage area 103 is formed in the second connector 500.

[0052] Based on the above embodiments, further, such as Figure 2 , Figure 3 and Figure 9As shown, the water inlet area 10 also includes a water passage 520. The water passage 520 is formed on the second connector 500. The water passage 520 is vertically arranged, with the buffer passage 102 located below the water passage 520 and the control passage 104 located above the water passage 520. The water passage 520 connects the buffer passage 102 and the control passage 104. The water passage 520 includes a constricted section 521, a throat section 522, and a flared section 523 connected sequentially from bottom to top. The constricted section 521 is closer to the buffer passage 102 than the flared section 523. The constricted section 521 gradually narrows upwards towards the throat section 522. The flared section 523 gradually widens upwards away from the constricted section 521. The throat section 522 is cylindrical. The minimum inner diameter of the constriction section 521, the throat section 522, and the flare section 523 are equal. The upper end of the flare section 523 constitutes the aforementioned first inlet 106. When water flows through the flow channel 520, it flows sequentially through the constriction section 521, the throat section 522, and the flare section 523. Due to the changes in the inner diameters of the constriction section 521, the throat section 522, and the flare section 523, the water flow velocity increases, accelerating its entry into the control flow channel 104.

[0053] Furthermore, such as Figure 2 , Figure 7 and Figure 9As shown, the first connecting member 400 is provided with a sand storage chamber 440, which is located below the groove 430. The groove 430 is provided with a guide column 431 and a sand discharge port 432. The guide column 431 extends upward in the groove 430. The guide column 431 is coaxially inserted into the constricted section 521. Several baffle grooves 433 are formed on the peripheral wall of the guide column 431, extending axially along the guide column 431. An elastic adjusting ring 450 is fitted onto the guide column 431; the adjusting ring 450 can be made of rubber or similar material. After the guide column 431 is inserted into the constricted section 521, the outer wall of the adjusting ring 450 abuts against the lower end of the constricted section 521. The sand discharge port 432 can be located on both sides of the lower end of the guide column 431. The sand storage chamber 440 communicates with the groove 430 through the sand discharge port 432. During water flow, water enters the baffle trough 433 from the control channel 104, and then flows upward along the baffle trough 433 into the constriction section 521. The regulating ring 450 expands and contracts to a certain extent according to the water pressure changes flowing through the baffle trough 433. As the water pressure increases, the regulating ring 450 expands radially outward; as the water pressure decreases, the regulating ring 450 contracts radially, thereby adjusting the water flow area between the regulating ring 450 and the baffle trough 433 to ensure stable water flow. Simultaneously, the cooperation of the regulating ring 450 and the baffle trough 433 helps to separate solid impurities such as sand from the water. Solid impurities cannot enter the flow channel 520 through the baffle trough 433. The separated solid impurities fall back and concentrate in the flow channel 520, and then fall into the sand storage chamber 440 through the sand discharge port 432 for storage. This prevents sediment from entering the control channel 104 and causing blockage. Among them, a sand-blocking platform 434 can be set on the groove 430. The sand-blocking platform 434 can block the mud and sand falling back into the water control channel 104 from flowing continuously along the water control channel 104.

[0054] Furthermore, such as Figure 1 , Figure 2 , Figure 7 and Figure 10As shown, a flow-blocking gap 110 is formed between the first frustum surface 410 and the second frustum surface 510. The flow-blocking gap 110 is arranged around the outer end of each rib 420, that is, each water inlet channel 101 is located between the flow-blocking gap 110 and the buffer channel 102. The flow-blocking gap 110 is used to block solid impurities such as sand. In this embodiment, a downwardly protruding ring 511 can be provided near the outer edge of the second frustum surface 510, and the flow-blocking gap 110 is formed between the ring 511 and the first frustum surface 410. The gap height of the flow-blocking gap 110 can be set in the range of 0.15mm to 0.2mm, which can effectively block the mud and sand in the water while ensuring the flow rate of water delivered to the water inlet channel 101. The width of the flow-blocking groove 433 can be set to be smaller than the gap size of the flow-blocking gap 110. The flow-blocking groove 433 is used to further separate the mud and sand in the water that could not be separated by the flow-blocking gap 110. The silt and sand blocked by the flow-blocking gap 110 are discharged from the outlet chamber 720 when the drain port 743 is opened. This can minimize the entry of silt and other impurities into the delay valve core.

[0055] In one embodiment, such as Figure 1 , Figure 2 and Figure 11As shown, the main body 100 is also provided with a water-blocking member 600. The water-blocking member 600 includes a plate portion 610, a stepped portion 620, and a rib portion 630. The plate portion 610 is circular, and the stepped portion 620 is cylindrical with an outer diameter smaller than that of the plate portion 610. The stepped portion 620 and the plate portion 610 are coaxial. The plate portion 610 and the stepped portion 620 can be independent components. After the shaft segment 530 on the second connecting member 500 passes downward through the first connecting member 400, it can be threadedly connected to the shaft segment 530 through the stepped portion 620, thereby locking the plate portion 610 and the first connecting member 400 between the second connecting member 500 and the stepped portion 620. The stepped portion 620 includes a first water-blocking portion 621 and a second water-blocking portion 622 distributed circumferentially. The axial thickness of the first water-blocking portion 621 is greater than that of the second water-blocking portion 622. Multiple rib sections 630 extend axially downwards from the stepped section 620 in a direction away from the plate section 610. The rib sections 630 are spaced apart sequentially along the circumference of the stepped section 620. After the time-delay valve core is installed into the mounting cavity 740, the plate section 610 normally covers the drain port 743 to seal it. The outer diameter of the stepped section 620 is adapted to the drain port 743. The stepped section 620 and the rib sections 630 extend downwards through the drain port 743. In use, as the time-delay valve core gradually resets from a position away from the drain port 743 towards sealing it, water initially flows through the drain port 743 from the gaps between the rib sections 630, at which point the drainage volume is at its maximum. As the time-delay valve core descends, the first water-blocking part 621 enters the drain outlet 743. At this time, a certain gap is still maintained between the second water-blocking part 622 and the drain outlet 743. Water is discharged from the gap between the second water-blocking part 622 and the drain outlet 743 into the water outlet chamber 720, and the discharged water volume is smaller than initially. The time-delay valve core continues to descend, and the second water-blocking part 622 enters the drain outlet 743. Then, the rear plate part 610 covers the drain outlet 743, thus finally sealing the drain outlet 743. In this way, before sealing the drain outlet 743, the drainage volume of the drain outlet 743 gradually decreases, preventing the time-delay valve core from descending too quickly and causing water hammer.

[0056] Furthermore, the circumferential sidewall of the first water-blocking part 621 is provided with multiple guide grooves 623. The guide grooves 623 are arranged along the axial direction of the stepped part 620. During the descent of the time-delay valve core relative to the drain port 743, after the first water-blocking part 621 and the second water-blocking part 622 enter the drain port 743, before the plate part 610 covers the drain port 743, a small amount of water can flow from the drain port 743 into the drain chamber through the guide grooves 623, thereby preventing water hammer caused by the plate part 610 being pressed down on the drain port 743 momentarily due to excessive water pressure when the first water-blocking part 621 and the second water-blocking part 622 enter the drain port 743.

[0057] Alternatively, the delay valve core can be adjusted to the desired discharge rate and then installed into the housing 700 for use. Or, the discharge rate of the delay valve core can be adjusted after it has been installed into the housing 700. In one embodiment, as follows... Figure 12 , Figure 13 and Figure 14 As shown, an adjustment assembly 900 is also installed on the housing 700. The adjustment assembly 900 has a second adjustment member 910. The second adjustment member 910 can be moved to insert into the first adjustment member 200 and drive the first adjustment member 200 to rotate. The second adjustment member 910 can also be moved away from the first adjustment member 200. In this embodiment, the adjustment assembly 900 is located above the delay valve core. Normally, the second adjustment member 910 is away from the first adjustment member 200. When it is necessary to adjust the discharge rate of the water control channel 104 of the delay valve core, the second adjustment member 910 is pressed down, inserted into the first adjustment member 200, and then the second adjustment member 910 is rotated, thereby driving the first adjustment member 200 to rotate, thus achieving the adjustment of the water control channel 104.

[0058] The adjusting assembly 900 further includes a base 920 and a rotating member 930. The base 920 is fixed to the housing 700. The rotating member 930 is inserted into the base 920, and the rotating member 930 and the base 920 are connected by a thread. The rotating member 930 is threaded to move up and down relative to the base 920 during rotation. The rotating member 930 has a insertion cavity 931 that communicates with the pressure relief chamber 730. The second adjusting member 910 is coaxially and movably inserted into the insertion cavity 931. A sealing ring can be provided between the rotating member 930 and the base 920, and a sealing ring can be provided between the second adjusting member 910 and the insertion cavity 931 to prevent water in the pressure relief chamber 730 from leaking out through the adjusting assembly 900. The insertion cavity 931 has a shoulder 932, and the second adjusting member 910 has a radially protruding protrusion 911. The outer diameter of the protrusion 911 is larger than the inner diameter of the shoulder 932. The second adjusting member 910 is subjected to water pressure from the pressure relief chamber 730, causing the protrusion 911 to abut upwards against the shoulder 932 in a direction away from the first adjusting member 200. When the rotating member 930 rotates relative to the base 920 in one direction, the rotating member 930 moves downwards and abuts against the protrusion 911 through the shoulder 932, thereby driving the second adjusting member 910 to press downwards towards the first adjusting member 200. Under normal conditions, the rotating member 930 moves upwards to a position away from the first adjusting member 200. When the pressure relief chamber 730 contains water, the second adjusting member 910 moves upwards to a position away from the first adjusting member 200 under the water pressure of the adjusting member. When it is necessary to rotate the first adjusting member 200, the rotating member 930 is rotated clockwise, causing the rotating member 930 to move downwards until the second adjusting member 910 is inserted into the first adjusting member 200. Then, the second adjusting member 910 is rotated alone, thereby driving the first adjusting member 200 to rotate. When the rotating component 930 rotates counterclockwise and moves upward, the second adjusting component 910 moves upward and away from the first adjusting component 200 under the water pressure of the pressure relief chamber 730.

[0059] Furthermore, such as Figure 4 , Figure 12 and Figure 14As shown, the first adjusting member 200 has an adjusting cavity 230. The inner wall of the adjusting cavity 230 has multiple circumferentially distributed protrusions 231. The protrusions 231 extend axially along the first adjusting member 200. Vertically arranged slots 232 are formed between adjacent protrusions 231. The top of the protrusion 231 has a slope 233, and the circumferential sidewall of the second adjusting member 910 has an insert 940. The insert 940 can enter and exit the slot 232. When the second adjusting member 910 descends, the insert 940 is inserted into the adjusting cavity 230. The insert 940 abuts against the slope 233, and then, as the second adjusting member 910 descends, the insert 940 slides down the slope 233 into the slot 232. The cooperation between the insert 940 and the slot 232 allows the second adjusting member 910 to drive the first adjusting member 200 to rotate.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] 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 time-delay valve core, characterized in that, include: The body (100) is provided with a water inlet area (10), a water control channel (104) and a water passage area (103), wherein the water control channel (104) is connected between the water inlet area (10) and the water passage area (103); A first adjusting member (200) is rotatably mounted on the body (100), and the water control channel (104) is configured to change the drainage flow rate to the water passage (103) as the first adjusting member (200) rotates; The main body (100) is also provided with a water-blocking component (600), which includes a plate portion (610) and a stepped portion (620). The plate portion (610) is circular, and the stepped portion (620) is cylindrical with an outer diameter smaller than that of the plate portion (610). The stepped portion (620) and the plate portion (610) are coaxial. The stepped portion (620) includes a first water-blocking portion (621) and a second water-blocking portion (622) distributed circumferentially. The thickness of the first water-blocking portion (621) in the axial direction is greater than that of the second water-blocking portion (622) in the axial direction. The water-blocking member (600) further includes rib sections (630), the plate section (610) is circular, and a plurality of rib sections (630) extend axially from the stepped section (620) in a direction away from the plate section (610), and the plurality of rib sections (630) are distributed sequentially at intervals along the circumference of the stepped section (620); wherein, The time-delay valve core is applied to the time-delay drain valve, which includes a housing (700), a mounting cavity (740) in the housing (700), a drain port (743) in the mounting cavity (740), and the time-delay valve core is installed in the mounting cavity (740). Under normal conditions, the plate portion (610) covers the drain port (743). The outer diameter of the stepped portion (620) is adapted to the drain port (743), and the stepped portion (620) and the rib portion (630) extend downward through the drain port (743).

2. The time-delay valve core according to claim 1, characterized in that: The water passage area (103) is provided with a water tank (105), and the water tank (105) is provided with a first water inlet (106) communicating with the water inlet area (10). The first adjusting member (200) is provided with a cover plate (210), and the cover plate (210) covers the water tank (105) to define the water control channel (104) between the cover plate (210) and the water tank (105). The position on the water tank (105) not covered by the cover plate (210) forms a first water outlet (107) communicating with the water passage area (103).

3. The time-delay valve core according to claim 2, characterized in that: The depth of the water tank (105) gradually decreases from the first inlet (106) towards the first outlet (107).

4. The time-delay valve core according to claim 2, characterized in that: The first adjusting member (200) is provided with a rotating shaft (220). The water passage area (103) is provided with a connecting cavity (108) and a plurality of slots (109) distributed around the connecting cavity (108). The water tank (105) extends in an arc shape around the connecting cavity (108). The rotating shaft (220) is rotatably coaxially inserted into the connecting cavity (108). An elastic member (300) is provided between the first adjusting member (200) and the water passage area (103). The elastic member (300) applies an elastic force to the first adjusting member (200) to press it down onto the water tank (105). The cover plate (210) is provided with a locking protrusion (211). The locking protrusion (211) moves in and out of each of the slots (109) in sequence as the first adjusting member (200) rotates.

5. The time-delay valve core according to claim 1, characterized in that: The body (100) includes a first connector (400) and a second connector (500) connected to each other. The first connector (400) has a first frustum (410) with a plurality of ribs (420) spaced apart circumferentially on the first frustum (410). The ribs (420) extend radially along the first frustum (410). The first frustum (410) also has a groove (430) located closer to the center of the first frustum (410) than the ribs (420). The gaps formed between the ribs (420) communicate with the groove (430). The second connector ( The second connector (500) is provided with a second frustum (510), which abuts against each of the protruding ribs (420). The gap between each of the protruding ribs (420) and the second frustum (510) defines a plurality of water inlet channels (101). The second frustum (510) and the groove (430) define a buffer channel (102). Each of the water inlet channels (101) and the buffer channel (102) are connected to form the water inlet area (10). The second connector (500) is provided with a water passage area (103), and the buffer channel (102) is connected between each of the water inlet channels (101) and the water control channel (104).

6. The time-delay valve core according to claim 1, characterized in that: The main body (100) includes a first connecting member (400) and a second connecting member (500) connected to each other. The first connecting member (400) has a first frustum (410) and a groove (430). The second connecting member (500) has a second frustum (510). A buffer channel (102) is defined between the second frustum (510) and the groove (430). The water inlet area (10) also includes a water passage (520). The second connecting member (500) has the water passage (520). The water passage (520) holds the buffer channel. The flushing channel (102) and the water control channel (104) are connected. The water passage channel (520) includes a constricted section (521), a throat section (522), and a flared section (523) connected in sequence. The constricted section (521) is closer to the buffer channel (102) than the flared section (523). The constricted section (521) gradually narrows towards the throat section (522), and the flared section (523) gradually widens away from the throat section (522). The minimum inner diameter of the constricted section (521), the inner diameter of the throat section (522), and the minimum inner diameter of the flared section (523) are equal.

7. The time-delay valve core according to claim 6, characterized in that: The first connector (400) is provided with a sand storage chamber (440), and the groove (430) is provided with a guide column (431) and a sand discharge port (432). The guide column (431) is coaxially inserted into the constricted section (521). A plurality of baffle grooves (433) are opened on the peripheral wall of the guide column (431). The baffle grooves (433) extend along the axial direction of the guide column (431). An elastic adjusting ring (450) is sleeved on the guide column (431). The adjusting ring (450) abuts against the constricted section (521). The sand storage chamber (440) is connected to the groove (430) through the sand discharge port (432).

8. The time-delay valve core according to claim 5, characterized in that: A flow-blocking gap (110) for blocking solid impurities is formed between the first frustum surface (410) and the second frustum surface (510), and the flow-blocking gap (110) is arranged around the outer end of each of the ribs (420).

9. The time-delay valve core according to claim 1, characterized in that: The first water-blocking part (621) has a plurality of guide grooves (623) on its circumferential sidewall, and the guide grooves (623) are arranged along the axial direction of the stepped part (620).

10. A time-delayed drain valve, characterized in that: Includes the time-delay valve core as described in any one of claims 1 to 9.

11. A sanitary ware, characterized in that: Includes the time-delay valve core as described in any one of claims 1 to 9 or the time-delay drain valve as described in claim 10.

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