Time-delay valve element, time-delay drain valve applying same and sanitary ware

Abstract

The invention belongs to the technical field of drain valves, and discloses a time-delay valve element and a time-delay drain valve and sanitary ware applying the time-delay valve element, the time-delay valve element is characterized in that a body is provided with a water inlet area, a water control flow channel and a water passing area, and the water control flow channel is communicated between the water inlet area and the water passing area; the first adjusting part is rotatably mounted on the body, and the water control flow channel is configured to rotate along with the first adjusting part to change the drainage flow towards the water passing area; according to the drainage requirement of a product, the drainage flow of the water control flow channel is adjusted through the first adjusting piece, adjustment of the multi-stage water effect is achieved, and the device is suitable for different water products; the whole structure is simple, adjustment is convenient, and applicability is wide.

Description

Division Case Explanation

[0001] This invention is a divisional application of the parent case with an application date of March 3, 2025, an application number of 2025102395865, and an invention title of Delayed Spool and Delayed Drain Valve and Sanitary Ware Using the Same. Technical Field

[0002] This invention belongs to the technical field of drain valves, and particularly relates to a delayed spool and a delayed drain valve and sanitary ware using the same. Background Art

[0003] With the increasing demand for green, environmental protection, and energy-saving products in society, especially for flushing valve products, the water efficiency is required to reach above level two. The first-level water efficiency is ≤ 5L, the second-level water efficiency is ≤ 6L, and the third-level water efficiency is 8L. At the same time, considering the actual flushing performance of the product, the average water consumption cannot be lower than 4L. In this way, the control threshold for the average water consumption of the product is too small, which is 1L for the first level, 2L for the second level, and 4L for the third level. Moreover, there are many factors affecting the average water consumption of the toilet flushing valve, including the flushing valve itself, the squat toilet it is equipped with, and the drainage pipe supporting the flushing valve and the squat toilet.

[0004] Currently, the water-saving technology of flushing valves generally adopts the method of customizing the spool structure by molding according to the water efficiency requirements during factory production. To adjust different water efficiency levels, corresponding water efficiency accessories need to be replaced, such as flow limiters, constant flow regulators, limiters, etc., or a flow regulating device needs to be additionally configured. This results in low product adaptability and high implementation costs. Summary of the Invention

[0005] This invention aims to solve at least one of the above technical problems in the related art to some extent. For this purpose, this invention proposes a delayed spool.

[0006] To achieve the above object, the technical solution of this invention is as follows:

[0007] This invention also proposes a delayed drain valve and sanitary ware having the above-mentioned delayed spool.

[0008] The delayed spool according to the first aspect embodiment of this invention includes:

[0009] A body, the body is provided with a water inlet area, a water control flow channel, and a water passing area, and the water control flow channel is communicated between the water inlet area and the water passing area;

[0010] A first adjusting member, the first adjusting member is rotatably installed on the body, and the water control flow channel is configured to change the drainage flow rate to the water passing area as the first adjusting member rotates;

[0011] A water baffle is further provided on the body. The water baffle includes a plate portion and a stepped portion. The plate portion is in the shape of a circular plate, and the stepped portion is in the shape of a cylinder with an outer diameter smaller than that of the plate portion. The stepped portion and the plate portion are coaxially positioned. The stepped portion includes a first water baffle portion and a second water baffle portion distributed circumferentially. The thickness dimension of the first water baffle portion in the axial direction is greater than that of the second water baffle portion in the axial direction.

[0012] The delay valve core according to the embodiment of the present invention has at least the following beneficial effects: According to the drainage requirements of the product, the first adjusting member is used to adjust the drainage flow rate of the control water flow channel, so as to realize the adjustment of multiple water effects and be applicable to different water-using products; the overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0013] According to some embodiments of the present invention, a water tank is provided in the water passing area. A first water inlet communicating with the water inlet area is opened on the water tank. A cover plate is provided on the first adjusting member. The cover plate covers the water tank to define the control water flow channel between the cover plate and the water tank. A first water outlet communicating with the water passing area is formed at the position on the water tank that is not covered by the cover plate.

[0014] According to some embodiments of the present invention, the depth of the water tank gradually becomes shallower from the direction of the first water inlet to the direction of the first water outlet.

[0015] According to some embodiments of the present invention, a rotating shaft is provided on the first adjusting member. A connecting cavity and a plurality of clamping grooves distributed around the connecting cavity are provided in the water passing area. The water tank extends in an arc shape around the connecting cavity. The rotating shaft is rotatably and coaxially inserted into the connecting cavity. An elastic member is provided between the first adjusting member and the water passing area. The elastic member applies an elastic acting force to the first adjusting member to press it down onto the water tank. A clamping protrusion is provided on the cover plate. The clamping protrusion sequentially enters and exits each of the clamping grooves as the first adjusting member rotates.

[0016] According to some embodiments of the present invention, the body includes a first connecting member and a second connecting member connected to each other. The first connecting member is provided with a first circular table surface, and a plurality of convex ribs are arranged on the first circular table surface at intervals in the circumferential direction. The convex ribs extend along the radial direction of the first circular table surface. The first circular table surface is further provided with a groove, and the position of the groove is closer to the center of the first circular table surface than the convex ribs. The gaps formed between the convex ribs communicate with the groove; the second connecting member is provided with a second circular table surface, and the second circular table surface abuts against the convex ribs. The gaps between the convex ribs and the second circular table surface define a plurality of water inlet channels, and the buffer channel is defined between the second circular table surface and the groove. Each of the water inlet channels communicates with the buffer channel to form the water inlet area. The second connecting member is provided with the water passing area, and the buffer channel communicates between each of the water inlet channels and the water control channel.

[0017] According to some embodiments of the present invention, the body includes a first connecting member and a second connecting member connected to each other. The first connecting member is provided with a first circular table surface, and the first circular table surface is further provided with a groove. The second connecting member is provided with a second circular table surface, and the buffer channel is defined between the second circular table surface and the groove. The water inlet area further includes a water passing channel, and the water passing channel is formed on the second connecting member. The water passing channel communicates the buffer channel and the water control channel. The water passing channel includes a constriction section, a throat section, and a flaring section that are connected in sequence. The constriction section is closer to the buffer channel than the flaring section. The constriction section is in a constricted shape that gradually narrows in the direction of the throat section, and the flaring section is in a flaring shape that gradually expands in the direction away from the throat section. The minimum inner diameter of the constriction section, the inner diameter of the throat section, and the minimum inner diameter of the flaring section are equal.

[0018] According to some embodiments of the present invention, the first connecting member is provided with a sand storage cavity, and the groove is provided with a diversion column and a sand discharge port. The diversion column is coaxially inserted into the constriction section. A plurality of flow blocking grooves are formed on the circumferential wall of the diversion column, and the flow blocking grooves extend along the axial direction of the diversion column. An elastic adjusting ring is sleeved on the diversion column, and the adjusting ring abuts against the constriction section; the sand storage cavity communicates with the groove through the sand discharge port.

[0019] According to some embodiments of the present invention, a flow blocking gap for blocking solid impurities is formed at an interval between the first circular table surface and the second circular table surface, and the flow blocking gap is arranged around the outer ends of the convex ribs.

[0020] According to some embodiments of the present invention, the water blocking member further includes a rib portion. The plate portion is in a circular plate shape, and a plurality of rib portions extend axially from the stepped portion in a direction away from the plate portion, and the plurality of rib portions are arranged at intervals in the circumferential direction of the stepped portion.

[0021] According to some embodiments of the present invention, a plurality of diversion grooves are provided on the circumferential side wall of the first water retaining portion, and the diversion grooves are arranged along the axial direction of the stepped portion.

[0022] The time-delay drain valve according to the second aspect embodiment of the present invention includes a time-delay valve core.

[0023] The time-delay drain valve according to the embodiments of the present invention has at least the following beneficial effects: The time-delay drain valve is applied to different products. According to the drainage requirements of the products, the first adjusting member is used to adjust the drainage flow rate of the control water flow channel, so as to realize the adjustment of multi-stage water efficiency and be applicable to different water-using products. The overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0024] The sanitary ware according to the third aspect embodiment of the present invention includes a time-delay valve core or a time-delay drain valve.

[0025] The sanitary ware according to the embodiments of the present invention has at least the following beneficial effects: It is convenient to adjust the delay time and discharge amount, and provides a multi-stage water efficiency selection mode.

[0026] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0028] Figure 1 is a schematic structural view of the time-delay valve core;

[0029] Figure 2 is a schematic internal structural view of the time-delay valve core;

[0030] Figure 3 is Figure 2 another sectional view of

[0031] Figure 4 is a schematic structural view of the first adjusting member;

[0032] Figure 5 is Figure 4 another perspective view of

[0033] Figure 6 is a schematic structural view of the first connecting member;

[0034] Figure 7 is Figure 6 a sectional view of

[0035] Figure 8 is a sectional view of the second connecting member;

[0036] Figure 9 is a cross-sectional view of the second connecting member;

[0037] Figure 10 is a schematic diagram of another perspective of the second connecting member;

[0038] Figure 11 is a schematic structural diagram of the water baffle member;

[0039] Figure 12 is a schematic diagram of the internal structure of the delay drain valve;

[0040] Figure 13 is a schematic structural diagram of the housing;

[0041] Figure 14 is an exploded schematic diagram of the structure of the adjustment assembly.

[0042] Reference numerals: body 100; water inlet area 10; water inlet flow channel 101; buffer flow channel 102; water passing area 103; water control flow channel 104; water tank 105; first water inlet 106; first water outlet 107; connection cavity 108; card slot 109; flow blocking gap 110; first adjusting member 200; cover plate 210; card projection 211; rotating shaft 220; adjusting cavity 230; rib 231; slot 232; inclined surface 233; elastic member 300; first connecting member 400; first circular table surface 410; rib 420; groove 430; guide post 431; sand discharge port 432; flow blocking groove 433; sand blocking platform 434; sand storage cavity 440; adjusting ring 450; second connecting member 500; second circular table surface 510; convex ring 511; water passing flow channel 520; reduced diameter section 521; throat section 522; flared section 523; shaft section 530; water baffle member 600; plate portion 610; stepped portion 620; first water baffle portion 621; second water baffle portion 622; guide groove 623; rib portion 630; housing 700; water inlet cavity 710; water outlet cavity 720; pressure relief cavity 730; installation cavity 740; second water inlet 741; pressure relief port 742; drain port 743; control valve 800; adjustment assembly 900; second adjusting member 910; protruding portion 911; base 920; rotating member 930; insertion cavity 931; hole shoulder 932; insertion bar 940. Detailed Description of the Invention

[0043] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where 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 are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] The present invention relates to a delay valve core, which includes a body 100 and a first adjusting member 200.

[0045] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, a water inlet area 10, a water control flow channel 104, and a water passing area 103 are provided on the main body 100. The water inlet area 10, the water control flow channel 104, and the water passing area 103 are connected in sequence. The first adjusting member 200 is installed on the main body 100, and the first adjusting member 200 can rotate on the main body 100. The water control flow channel 104 is connected between the water inlet area 10 and the water passing area 103. The water control flow channel 104 is configured such that when the first adjusting member 200 rotates, the first adjusting member 200 can change the drainage flow rate of the water control flow channel 104 to the water passing area 103. When water is passed, water flows into the main body 100 from the water inlet area 10, then into the water control flow channel 104, and finally flows out of the main body 100 after flowing through the water control flow channel 104 to the water passing area 103.

[0046] The present invention also relates to a time-delay drainage valve, which applies a time-delay valve core. The time-delay drainage valve further includes a housing 700 and a control valve 800. As Figure 12 and Figure 13 shown, a water inlet chamber 710, a water outlet chamber 720, a pressure relief chamber 730, and a mounting chamber 740 are provided in the housing 700. The mounting chamber 740 is provided with a second water inlet 741, a pressure relief port 742, and a drainage port 743. In this embodiment, the pressure relief port 742 and the drainage port 743 are vertically distributed, and the second water inlet 741 is opened on the left side of the mounting chamber 740. The second water inlet 741 is connected to the water inlet chamber 710, the pressure relief port 742 is connected to the upper part of the pressure relief chamber 730, and the water outlet chamber 720 is connected below the drainage port 743. The water outlet chamber 720 is also connected to the lower part of the pressure relief chamber 730. The control valve 800 is installed on the housing 700, and the control valve 800 can be selected from an electromagnetic valve or other manually controlled mechanical valves, etc. The control valve 800 is located at the connection position between the lower part of the pressure relief chamber 730 and the water outlet chamber 720. The control valve 800 is used to control the connection or disconnection between the pressure relief chamber 730 and the water outlet chamber 720. The time-delay valve core is installed in the mounting chamber 740, and the time-delay valve core moves up and down relative to the mounting chamber 740 as the water pressure in the housing 700 changes. The water in the water inlet chamber 710 can flow into the pressure relief chamber 730 through the second water inlet 741, the water inlet area 10, the water control flow channel 104, the water passing area 103, and the pressure relief port 742.

[0047] In actual use, the delay valve core or the delay drain valve can be applied to sanitary wares such as urinals and squatting pans. The water inlet cavity 710 is connected to an external water supply system such as a water pipe. The water outlet cavity 720 is connected to the flushing pipeline of the sanitary ware. Under normal conditions, the water inlet cavity 710 is kept in communication with the external water supply system, and the control valve 800 is kept in a state of shutting off the pressure relief cavity 730 and the water outlet cavity 720, that is, the pressure relief cavity 730 and the water outlet cavity 720 are not in communication with water. The water in the water inlet cavity 710 flows into the pressure relief cavity 730 through the second water inlet 741, the water inlet area 10, the control water flow channel 104, the water passing area 103, and the pressure relief port 742, and the pressure relief cavity 730 is kept full of water. At this time, under the action of the water pressure in the water inlet cavity 710 and the pressure relief cavity 730 and its own gravity, the delay valve core descends and remains at a position blocking the drain port 743. When drainage is required, the control valve 800 is opened, the pressure relief cavity 730 and the water outlet cavity 720 are in communication, and the water in the pressure relief cavity 730 is discharged outwards through the water outlet cavity 720. After the pressure relief cavity 730 is depressurized, the control valve 800 is used to shut off the pressure relief cavity 730 and the water outlet cavity 720. After the pressure relief cavity 730 is depressurized, the delay valve core is lifted upwards under the action of the water pressure in the water inlet cavity 710, the drain port 743 is opened, and the water is discharged from the water inlet cavity 710 through the second water inlet 741, the installation cavity 740, and the drain port 743 into the water outlet cavity 720 and then discharged to the flushing pipeline. At the same time, the water can flow into the pressure relief cavity 730 through the second water inlet 741, the water inlet area 10, the control water flow channel 104, the water passing area 103, and the pressure relief port 742 to gradually replenish the pressure relief cavity 730. The water pressures in the water inlet cavity 710 and the pressure relief cavity 730 gradually tend to be balanced, and under the action of the self-gravity of the delay valve core, the delay valve core gradually descends until it descends to block the drain port 743, thereby completing the drainage operation. During the water replenishing process of the pressure relief cavity 730, according to the drainage flow rate of the control water flow channel 104 to the water passing area 103, the water replenishing completion time of the pressure relief area is determined, that is, the drainage time of the delay drain valve is determined. When the delay drain valve is applied to different products, according to the drainage requirements of the products, the first adjusting member 200 is used to adjust the drainage flow rate of the control water flow channel 104 to achieve the adjustment of multi-level water efficiency so as to be applicable to different water-using products. The overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0048] In one embodiment, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, the water passing area 103 is a cavity structure, and a water tank 105 is provided on the lower side of the water passing area 103. A first water inlet 106 is formed in the water tank 105. The first water inlet 106 can be located at one end of the water tank 105, and the first water inlet 106 communicates with 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 trend of the water tank 105. In this embodiment, the water tank 105 extends in an arc shape, and the cover plate 210 is correspondingly arranged as a sector. The cover plate 210 covers above the water tank 105, and the above-mentioned water control flow channel 104 is defined between the lower side of the cover plate 210 and the water tank 105. In order for the water control flow channel 104 to supply water to the water passing area 103, the cover plate 210 does not completely cover the upper side of the water tank 105. The part of the water tank 105 not covered by the cover plate 210 constitutes the first water outlet 107 of the water control flow channel 104. The water control flow channel 104 communicates with the water passing area 103 through the first water outlet 107. The first water outlet 107 is formed at one end of the water tank 105 away from the first water inlet 106. When the first adjusting member 200 is rotated, the covering area of the cover plate 210 on the water tank 105 will be changed, that is, the opening size of the first water outlet 107 is changed, so as to adjust the drainage flow rate of the water control flow channel 104 to the water passing area 103. When the first water outlet 107 is reduced, the drainage flow rate of the water control flow channel 104 becomes smaller; when the first water outlet 107 is enlarged, the drainage flow rate of the water control flow channel 104 becomes larger. Among them, the water tank 105 can be set as a tank body with equal depth at each position. It can also be that the depth of the water tank 105 is set in a gradient manner, and the depth of the water tank 105 gradually becomes shallower from the direction of the first water inlet 106 to the first water outlet 107. That is, the water passing cross-section of the water control flow channel 104 gradually shrinks from the direction of the first water inlet 106 to the first water outlet 107. When the first adjusting member 200 is rotated in the direction of enlarging the first water outlet 107, when rotating the same angle, the increase amount of the drainage flow rate of the first water outlet 107 will change in an increasing manner. One, two or more water tanks 105 can be provided on the water passing area 103, and cover plates 210 corresponding to the number of water tanks 105 are provided on the first adjusting member 200. One cover plate 210 correspondingly covers one water tank 105, so as to form a plurality of water control flow channels 104. When the first adjusting member 200 rotates, the drainage flow rates of the respective water control flow channels 104 increase or decrease synchronously.

[0049] Based on the above embodiment, as Figure 2 、 Figure 3 、 Figure 5 and Figure 8As shown, a rotating shaft 220 is provided on the first adjusting member 200. The cover plate 210 extends radially from the circumferential side wall of the rotating shaft 220. A connecting cavity 108 and a clamping groove 109 are provided in the water passing area 103. A plurality of clamping grooves 109 are distributed around the connecting cavity 108. The water tank 105 extends in an arc 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 passing area 103 through the rotational cooperation between the rotating shaft 220 and the connecting cavity 108. Each clamping groove 109 is formed radially along the connecting cavity 108. A clamping protrusion 211 is provided on the lower side of the cover plate 210. The clamping protrusion 211 can slide into the clamping groove 109. When the first adjusting member 200 rotates, the clamping protrusion 211 will slide out of the current clamping groove 109 and then slide into the next adjacent clamping groove 109. Through the cooperation between the clamping protrusion 211 and the clamping groove 109, it is possible to prevent the first adjusting member 200 from rotating by itself under non-artificial rotation operations, thereby positioning the first adjusting member 200 at the current position. An elastic member 300 is provided between the first adjusting member 200 and the water passing area 103. The elastic member 300 can be selected as a spring or the like. It can be that a cover member is installed on the upper side of the water passing area 103, and the elastic member 300 is sleeved on the first adjusting member 200. The upper end of the elastic member 300 abuts against the lower side of the cover member, and the lower end of the elastic member 300 abuts against the upper side of the cover plate 210, so that the elastic member 300 exerts an elastic acting force on the first adjusting member 200, and this elastic acting force presses the cover plate 210 onto the water tank 105. When the first adjusting member 200 rotates, the clamping protrusion 211 slides into and out of each clamping groove 109 in sequence, and the first adjusting member 200 will move up and down in cooperation with the elastic acting force. When not rotating, the clamping protrusion 211 can be kept clamped in the clamping groove 109 under the elastic acting force.

[0050] In one embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8As shown, the body 100 includes a first connecting member 400 and a second connecting member 500 which are connected to each other. The first connecting member 400 and the second connecting member 500 can be connected to each other by means of plugging. For example, a shaft section 530 extends from the bottom of the second connecting member 500, and the shaft section 530 passes through the first connecting member 400 downward. A first circular table surface 410 is provided on the upper side of the first connecting member 400. A plurality of convex ribs 420 are provided on the first circular table surface 410, and the convex ribs 420 are sequentially distributed along the circumferential direction of the first circular table surface 410. The convex ribs 420 extend in the radial direction of the first circular table surface 410. A groove 430 is also provided on the first circular table surface 410. The position where the groove 430 is located is closer to the center of the first circular table surface 410 than the convex ribs 420. The convex ribs 420 are arranged at intervals, and one end of the gap formed between the convex ribs 420 is opened on the groove wall of the groove 430. The groove 430 can extend in an arc shape around the center of the first circular table surface 410. A second circular table surface 510 is provided on the lower side of the second connecting member 500. The second circular table surface 510 abuts against the convex ribs 420. A plurality of water inlet channels 101 are defined between the gaps between the convex ribs 420 and the second circular table surface 510. A buffer channel 102 is defined between the second circular table 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 above-mentioned 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 installation cavity 740, the water flows into the buffer channel 102 from each water inlet channel 101 respectively along the circumferential direction of the body 100 for convergence. After the water enters the buffer channel 102, it gradually fills the buffer channel 102 to accumulate static pressure potential 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 above-mentioned water passing area 103 is formed in the second connecting member 500.

[0051] Based on the above embodiments, further, as Figure 2 , Figure 3 and Figure 9As shown, the water inlet area 10 further includes a water flow channel 520. The water flow channel 520 is formed on the second connecting member 500. The water flow channel 520 is vertically arranged, with the buffer flow channel 102 located below the water flow channel 520 and the water control flow channel 104 located above the water flow channel 520. The water flow channel 520 connects the buffer flow channel 102 and the water control flow channel 104. The water flow channel 520 includes a reduced diameter section 521, a throat section 522, and a flared section 523 that are connected in sequence from bottom to top. The reduced diameter section 521 is closer to the buffer flow channel 102 than the flared section 523. The reduced diameter section 521 tapers upward in a reduced diameter shape towards the throat section 522. The flared section 523 flares upward in a gradually expanding shape away from the reduced diameter section 521. The throat section 522 is cylindrical. The minimum inner diameter of the reduced diameter section 521, the inner diameter of the throat section 522, and the minimum inner diameter of the flared section 523 are equal. The upper end of the flared section 523 constitutes the first water inlet 106. When water flows through the water flow channel 520, the water flows through the reduced diameter section 521, the throat section 522, and the flared section 523 in sequence, and the water flow velocity increases due to the change in the inner diameter of the reduced diameter section 521, the throat section 522, and the flared section 523, and it accelerates into the water control flow channel 104.

[0052] Further, as Figure 2 , Figure 7 and Figure 9As shown, a sand storage cavity 440 is provided on the first connecting member 400, and the sand storage cavity 440 is located below the groove 430. A diversion column 431 and a sand discharge port 432 are provided on the groove 430. The diversion column 431 extends upward on the groove 430. The diversion column 431 is coaxially inserted into the reduced diameter section 521. A plurality of flow blocking grooves 433 are formed on the peripheral wall of the diversion column 431, and the flow blocking grooves 433 extend along the axial direction of the diversion column 431. An elastic adjusting ring 450 is sleeved on the diversion column 431, and the adjusting ring 450 can be made of rubber material or the like. After the diversion column 431 is inserted into the reduced diameter section 521, the outer wall of the adjusting ring 450 abuts against the lower end of the reduced diameter section 521. The sand discharge port 432 can be provided on both sides of the lower end of the diversion column 431. The sand storage cavity 440 communicates with the groove 430 through the sand discharge port 432. When water passes through, the water flow enters the flow blocking grooves 433 from the water control channel 104, and then flows upward along the flow blocking grooves 433 into the reduced diameter section 521. The adjusting ring 450 will expand and contract to a certain extent according to the change of the water pressure flowing through the flow blocking grooves 433. As the water pressure increases, the adjusting ring 450 will expand radially outward; as the water pressure decreases, the adjusting ring 450 will contract radially, so as to automatically adjust the water flow passage area between the adjusting ring 450 and the flow blocking grooves 433 to ensure stable water flow. At the same time, by using the cooperation of the adjusting ring 450 and the flow blocking grooves 433, some solid impurities such as sand in the water body can be blocked and separated. The solid impurities cannot enter the water flow channel 520 through the flow blocking grooves 433. The separated solid impurities will fall back and concentrate in the water flow channel 520, and fall into the sand storage cavity 440 through the sand discharge port 432 for storage. In this way, it is possible to prevent sediment from entering the water control channel 104 and causing blockage. Among them, a sand blocking platform 434 can be provided on the groove 430, and the sand blocking platform 434 can block the sediment falling back into the water control channel 104 from flowing continuously along the water control channel 104.

[0053] Further, 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 convex ring 511 can be provided at a position close to the outer edge of the second frustum surface 510, and the convex ring 511 and the first frustum surface 410 are spaced to form the above-mentioned flow-blocking gap 110. The gap height of the flow-blocking gap 110 can be set in the range of 0.15mm to 0.2mm, which can well block the sediment in the water and ensure the flow rate of water transported to the water inlet channel 101. Among them, the groove width of the above-mentioned flow-blocking groove 433 can be set to be smaller than the gap size of the flow-blocking gap 110, and the flow-blocking groove 433 is used to further separate the sediment in the water that cannot be separated by the flow-blocking gap 110. The silt blocked by the flow blocking gap 110 is discharged from the water outlet chamber 720 as the drain port 743 is opened. This can prevent silt and other impurities from entering the time-delay valve core as much as possible.

[0054] In one embodiment, if Figure 1 , Figure 2 and Figure 11As shown in the figure, a water baffle 600 is further provided on the body 100. The water baffle 600 includes a plate portion 610, a stepped portion 620, and a rib portion 630. The plate portion 610 is in the shape of a circular plate, and the stepped portion 620 is in the shape of a cylinder with an outer diameter smaller than that of the plate portion 610. The stepped portion 620 and the plate portion 610 are in a coaxial position. The plate portion 610 and the stepped portion 620 can be independent components. After the shaft section 530 on the second connecting member 500 passes downward through the first connecting member 400, it can be threadedly connected to the shaft section 530 through the stepped portion 620, thereby locking and fixing 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 along the circumferential direction. The thickness dimension of the first water blocking portion 621 in the axial direction is greater than the thickness dimension of the second water blocking portion 622 in the axial direction. A plurality of rib portions 630 extend downward from the stepped portion 620 along the axial direction away from the plate portion 610. The plurality of rib portions 630 are sequentially and spaced apart along the circumferential direction of the stepped portion 620. After the time-delay valve core is installed in the installation cavity 740, under normal conditions, the plate portion 610 covers the drain port 743 to block the drain port 743. The outer diameter of the stepped portion 620 is adapted to the drain port 743. The stepped portion 620 and the rib portion 630 pass downward through the drain port 743. During use, in the process of the time-delay valve core gradually resetting from a position away from the drain port 743 towards the direction of blocking the drain port 743, initially, water flows through the drain port 743 from the gaps between the rib portions 630, and at this time, the drainage volume is the largest. As the time-delay valve core descends, the first water blocking portion 621 first enters the drain port 743. At this time, there is still a certain gap between the second water blocking portion 622 and the drain port 743. At this time, water is discharged from the gap between the second water blocking portion 622 and the drain port 743 to the water outlet cavity 720, and the discharged water volume becomes smaller than that at the initial time. The time-delay valve core continues to descend, the second water blocking portion 622 enters the drain port 743, and then the plate portion 610 covers the drain port 743, thereby finally blocking the drain port 743. In this way, before blocking the drain port 743, the drainage volume of the drain port 743 decreases in a staged manner, and it will not cause the time-delay valve core to descend too fast and cause water hammer.

[0055] Further, a plurality of diversion grooves 623 are provided on the circumferential side wall of the first water blocking portion 621. The diversion grooves 623 are arranged along the axial direction of the stepped portion 620. During the process of the time-delay valve core descending relative to the drain port 743, after the first water blocking portion 621 and the second water blocking portion 622 enter the drain port 743 and before the plate portion 610 covers the drain port 743, a small amount of water can flow from the drain port 743 into the drain cavity through the diversion grooves 623, thereby avoiding water hammer caused by the plate portion 610 being instantaneously pressed down on the drain port 743 due to excessive water pressure when the first water blocking portion 621 and the second water blocking portion 622 enter the drain port 743.

[0056] Among them, the delay valve core can be installed in the housing 700 for use after adjusting the displacement. Alternatively, the displacement of the delay valve core can be adjusted after the delay valve core is installed in the housing 700. In one embodiment, as Figure 12 , Figure 13 and Figure 14 shown, an adjusting assembly 900 is further installed on the housing 700. A second adjusting member 910 is provided on the adjusting assembly 900. The second adjusting member 910 can be translated to be inserted into the first adjusting member 200 and drive the first adjusting member 200 to rotate. The second adjusting member 910 can be translated away from the first adjusting member 200. In this embodiment, the adjusting assembly 900 is located above the delay valve core. In the normal state, the second adjusting member 910 is away from the first adjusting member 200. When it is necessary to adjust the displacement of the water control flow channel 104 of the delay valve core, the second adjusting member 910 is pressed down, the second adjusting member 910 is inserted into the first adjusting member 200, and then the second adjusting member 910 is rotated, thereby driving the first adjusting member 200 to rotate, so as to realize the adjustment of the water control flow channel 104.

[0057] Among them, the adjusting component 900 further includes a base 920 and a rotating member 930. The base 920 is fixed on the housing 700. The rotating member 930 is inserted into the base 920, and the rotating member 930 is threadedly connected to the base 920. The rotating member 930 is threadedly connected to move up and down relative to the base 920 when rotating. A plugging cavity 931 communicating with the pressure relief cavity 730 is formed on the rotating member 930. The second adjusting member 910 is coaxially and movably plugged in the plugging cavity 931. A sealing ring can be arranged between the rotating member 930 and the base 920, and a sealing ring can be arranged between the second adjusting member 910 and the plugging cavity 931, so as to prevent the water in the pressure relief cavity 730 from leaking out through the adjusting component 900. A shoulder 932 is arranged in the plugging cavity 931, and a protruding portion 911 protruding radially is arranged on the second adjusting member 910. The outer diameter of the protruding portion 911 is larger than the inner diameter of the shoulder 932. The second adjusting member 910 can be acted on by the water pressure in the pressure relief cavity 730 so that the protruding portion 911 abuts upward against the shoulder 932 in a direction away from the first adjusting member 200. When the rotating member 930 rotates in one direction relative to the base 920, the rotating member 930 moves downward and abuts downward against the protruding portion 911 through the shoulder 932 to drive the second adjusting member 910 to press downward in the direction of the first adjusting member 200. Under normal conditions, the rotating member 930 moves upward to a position away from the first adjusting member 200. When there is water in the pressure relief cavity 730, the second adjusting member 910 moves upward under the action of the water pressure of the adjusting member to a position away from the first adjusting member 200. When the first adjusting member 200 needs to be rotated, the rotating member 930 is rotated clockwise, and the rotating member 930 drives the second adjusting member 910 to move downward until the second adjusting member 910 is inserted onto the first adjusting member 200. Then the second adjusting member 910 is rotated alone, and further drives the first adjusting member 200 to rotate. When the rotating member 930 rotates counterclockwise and moves upward, the second adjusting member 910 moves upward away from the first adjusting member 200 under the action of the water pressure in the pressure relief cavity 730.

[0058] Further, as Figure 4 , Figure 12 and Figure 14As shown in the figure, an adjustment cavity 230 is provided on the first adjustment member 200. A plurality of convex strips 231 are provided on the inner wall of the adjustment cavity 230 and are sequentially distributed along the circumferential direction. The convex strips 231 extend along the axial direction of the first adjustment member 200. A vertically arranged slot 232 is formed by an interval between two adjacent convex strips 231. A slope 233 is provided at the top of the convex strip 231, and an insertion strip 940 is provided on the circumferential side wall of the second adjustment member 910. The insertion strip 940 can enter and exit the slot 232. When the second adjustment member 910 descends, the insertion strip 940 is inserted into the adjustment cavity 230 along with the second adjustment member 910. The insertion strip 940 will abut against the slope 233, and then as the second adjustment member 910 descends, the insertion strip 940 slides down along the slope 233 until it enters the slot 232. The cooperation between the insertion strip 940 and the slot 232 enables the second adjustment member 910 to drive the first adjustment member 200 to rotate.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0060] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0061] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0063] In the description of the present specification, the description with reference to terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A time-delay valve core, characterized in that: include: A main body (100), the main body (100) being provided with a water inlet area (10), a water control channel (104) and a water passing area (103), the water control channel (104) being connected between the water inlet area (10) and the water passing area (103); a first adjusting member (200), the first adjusting member (200) being rotatably mounted on the body (100), the water control channel (104) being configured to change the drainage flow rate to the water passing area (103) as the first adjusting member (200) rotates; The body (100) is also provided with a water retaining member (600), the water retaining member (600) comprising a plate portion (610) and a stepped portion (620), the plate portion (610) being in the shape of a circular plate, the stepped portion (620) being in the shape of a cylinder having an outer diameter smaller than that of the plate portion (610), the stepped portion (620) being coaxial with the plate portion (610), the stepped portion (620) comprising a first water retaining portion (621) and a second water retaining portion (622) distributed in a circumferential direction, the first water retaining portion (621) having an axial thickness dimension greater than the axial thickness dimension of the second water retaining portion (622).

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

3. The time-delay valve core according to claim 2, characterized in that: The depth of the water tank (105) gradually decreases in a direction from the first water inlet (106) to the first water 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 flow area (103) is provided with a connecting cavity (108) and a plurality of clamping grooves (109) distributed around the connecting cavity (108), the water tank (105) is extended in an arc shape around the connecting cavity (108), the rotating shaft (220) is rotatably coaxially inserted in the connecting cavity (108), an elastic member (300) is provided between the first adjusting member (200) and the water flow area (103), the elastic member (300) exerts an elastic force on the first adjusting member (200) to press the first adjusting member (200) downward onto the water tank (105), and a clamping protrusion (211) is provided on the cover plate (210), and the clamping protrusion (211) sequentially enters and exits the clamping grooves (109) as the first adjusting member (200) rotates.

5. The time-delay valve core according to claim 1, characterized in that: The body (100) comprises a first connecting member (400) and a second connecting member (500) which are connected to each other. The first connecting member (400) is provided with a first truncated cone (410). The first truncated cone (410) is provided with a plurality of convex ribs (420) which are distributed in a circumferential direction in sequence and at intervals. The convex ribs (420) extend radially along the first truncated cone (410). The first truncated cone (410) is further provided with a groove (430). The position of the groove (430) is closer to the center of the first truncated cone (410) than the convex ribs (420). The gaps formed between the convex ribs (420) are connected to the grooves (430). The second connecting member ( A second truncated cone (510) is provided on the second connecting member (500), the second truncated cone (510) abuts against each of the convex ribs (420), a plurality of water inlet channels (101) are defined between the gaps between each of the convex ribs (420) and the second truncated cone (510), a buffer channel (102) is defined between the second truncated cone (510) and the groove (430), each of the water inlet channels (101) is connected to the buffer channel (102) to form the water inlet area (10), the water passing area (103) is provided on the second connecting member (500), 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 body (100) comprises a first connecting member (400) and a second connecting member (500) which are connected to each other. The first connecting member (400) is provided with a first frustum (410), and the first frustum (410) is also provided with a groove (430). The second connecting member (500) is provided with a second frustum (510), and a buffer flow channel (102) is defined between the second frustum (510) and the groove (430). The water inlet area (10) further comprises a water flow channel (520), and the second connecting member (500) is provided with the water flow channel (520). The water flow channel (520) connects the buffer flow channel (102) to the water inlet area (10). The flushing channel (102) is connected to the water control channel (104), and the water flow channel (520) comprises a shrinking section (521), a throat section (522) and a flaring section (523) which are connected in sequence. The shrinking section (521) is closer to the buffer channel (102) than the flaring section (523). The shrinking section (521) is in a shrinking shape which gradually shrinks in the direction of the throat section (522), and the flaring section (523) is in a flaring shape which gradually expands in the direction away from the throat section (522). The minimum inner diameter of the shrinking section (521), the inner diameter of the throat section (522) and the minimum inner diameter of the flaring section (523) are equal.

7. The time-delay valve core according to claim 6, characterized in that: The first connecting member (400) is provided with a sand storage chamber (440), 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 flow blocking grooves (433) are provided on the peripheral wall of the guide column (431), the flow blocking grooves (433) extend along the axial direction of the guide column (431), an elastic adjustment ring (450) is sleeved on the guide column (431), and the adjustment ring (450) abuts against the constricted section (521); the sand storage chamber (440) is communicated with 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 convex rib (420).

9. The time-delay valve core according to claim 1, characterized in that: The water retaining member (600) further comprises a rib portion (630), the plate portion (610) is in the shape of a circular plate, a plurality of the rib portions (630) extend axially from the step portion (620) in a direction away from the plate portion (610), and the plurality of the rib portions (630) are distributed in sequence and at intervals along the circumference of the step portion (620).

10. The time-delay valve core according to claim 1 or 9, characterized in that: A plurality of guide grooves (623) are provided on the circumferential side wall of the first water retaining portion (621), and the guide grooves (623) are arranged along the axial direction of the stepped portion (620).

11. A time-delay drain valve, characterized in that: Comprising the time-delay valve core according to any one of claims 1 to 10.

12. A sanitary ware, characterized in that: It comprises the time-delay valve core according to any one of claims 1 to 10 or the time-delay drain valve according to claim 11.

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