Delay valve core, delay drain valve and sanitary ware applying the same

Abstract

The present invention belongs to the technical field of drain valves, and discloses a delay valve core, a delay drain valve and a sanitary ware applying the same. The delay valve core includes: a main body 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; a first adjusting member is rotatably installed on the main 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; according to the drainage requirements of the product, the drainage flow rate of the water control flow channel is adjusted by using the first adjusting member to realize the adjustment of multiple water efficiency levels, so as to be applicable to different water-using products; the overall structure is simple, the adjustment is convenient, and the applicability is wide.

Description

Technical Field

[0001] The present invention belongs to the technical field of drain valves, and particularly relates to a time-delay valve core, a time-delay drain valve and a sanitary ware using the same. Background Art

[0002] 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 water consumption per flush for level one is ≤ 5L, for level two is ≤ 6L, and for level three 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 level one, 2L for level two, and 4L for level three. 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.

[0003] Currently, the water-saving technology of flushing valves generally adopts the method of customizing the valve core structure by molding according to the water efficiency requirements during factory production. For different water efficiency levels, corresponding water efficiency accessories need to be replaced, such as restrictors, constant flow regulators, limiters, etc., or an additional flow regulating device needs to be configured. This results in low adaptability of the product and high implementation costs. Summary of the Invention

[0004] The present invention aims to at least solve one of the above technical problems in the related art to some extent. For this purpose, the present invention provides a time-delay valve core.

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

[0006] The present invention also provides a time-delay drain valve and a sanitary ware having the above time-delay valve core.

[0007] The time-delay valve core according to the first aspect embodiment of the present invention includes:

[0008] 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;

[0009] 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.

[0010] The time-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 drainage flow rate of the water control flow channel is adjusted by using the first adjusting member to achieve the adjustment of multiple water efficiency levels, so as to be applicable to different water-using products; the overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0011] 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 formed on the water tank. A cover plate is provided on the first adjusting member, and the cover plate covers the water tank to define the water control flow channel between the cover plate and the water tank. A first water outlet communicating with the water passing area is formed at a position on the water tank not covered by the cover plate.

[0012] 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.

[0013] 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 card slots 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 convex is provided on the cover plate, and the clamping convex sequentially enters and exits each of the card slots as the first adjusting member rotates.

[0014] According to some embodiments of the present invention, the body includes a first connecting member and a second connecting member connected to each other. A first circular table surface is provided on the first connecting member. A plurality of convex ribs are provided on the first circular table surface and are sequentially spaced apart along the circumferential direction. The convex ribs extend along the radial direction of the first circular table surface. A groove is further provided on the first circular table surface, and the position where the groove is located 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; a second circular table surface is provided on the second connecting member, and the second circular table surface abuts against each of the convex ribs. The gaps between the convex ribs and the second circular table surface define a plurality of water inlet flow channels. A buffer flow channel is defined between the second circular table surface and the groove. Each of the water inlet flow channels communicates with the buffer flow channel to form the water inlet area. The water passing area is provided on the second connecting member, and the buffer flow channel communicates between each of the water inlet flow channels and the water control flow channel.

[0015] According to some embodiments of the present invention, the water inlet area further includes a water passing flow channel. The water passing flow channel is formed on the second connecting member, and the water passing flow channel connects the buffer flow channel and the water control flow channel. The water passing flow channel includes a reduced diameter section, a throat section, and an enlarged diameter section that are sequentially connected. The reduced diameter section is closer to the buffer flow channel than the enlarged diameter section. The reduced diameter section is in a gradually shrinking reduced diameter shape in the direction of the throat section, and the enlarged diameter section is in a gradually expanding enlarged diameter shape in the direction away from the throat section. The minimum inner diameter of the reduced diameter section, the inner diameter of the throat section, and the minimum inner diameter of the enlarged diameter section are equal.

[0016] According to some embodiments of the present invention, a sand storage cavity is provided on the first connecting member, a diversion post and a sand discharge port are provided on the groove, the diversion post is coaxially inserted into the reduced diameter section, a plurality of flow blocking grooves are formed on the circumferential wall of the diversion post, the flow blocking grooves extend along the axial direction of the diversion post, an elastic adjusting ring is sleeved on the diversion post, and the adjusting ring abuts against the reduced diameter section; the sand storage cavity is communicated with the groove through the sand discharge port.

[0017] 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.

[0018] According to some embodiments of the present invention, a water blocking member is further provided on the body, the water blocking member includes a plate portion, a stepped portion and a rib portion, the plate portion is in the shape of a circular plate, 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 blocking portion and a second water blocking portion distributed circumferentially, the thickness dimension of the first water blocking portion in the axial direction is greater than the thickness dimension of the second water blocking portion in the axial direction, 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 sequentially and circumferentially spaced apart along the stepped portion.

[0019] According to some embodiments of the present invention, a plurality of diversion grooves are provided on the circumferential side wall of the first water blocking portion, and the diversion grooves are arranged along the axial direction of the stepped portion.

[0020] The delayed drainage valve according to the second aspect embodiment of the present invention includes a housing, a control valve and a delayed valve core. An inlet cavity, an outlet cavity, a pressure relief cavity and an installation cavity are provided in the housing. The installation cavity is provided with a second inlet communicating with the inlet cavity, a pressure relief port communicating with the pressure relief cavity and a drainage port communicating with the outlet cavity. The delayed valve core is movably installed in the installation cavity. The second inlet is communicated with the pressure relief cavity through the water inlet area, the control water flow channel, the water passing area and the pressure relief port. The control valve controls the on-off between the pressure relief cavity and the outlet cavity. When the delayed valve core moves in the installation cavity, it controls the on-off between the second inlet and the drainage port.

[0021] The delayed drainage valve according to the embodiment of the present invention has at least the following beneficial effects: The delayed drainage 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-level water efficiency and be applicable to different water-using products. The overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0022] According to some embodiments of the present invention, an adjustment assembly is further installed on the housing. A second adjustment member is provided on the adjustment assembly. The second adjustment member can be translated to be inserted into the first adjustment member and drive the first adjustment member to rotate, and the second adjustment member can be translated away from the first adjustment member.

[0023] According to some embodiments of the present invention, the adjustment assembly further includes a base and a rotating member. The base is fixed on the housing. The rotating member is threadedly connected to the base. A plugging cavity communicating with the pressure relief cavity is formed on the rotating member. The second adjustment member is coaxially movably inserted into the plugging cavity. A hole shoulder is provided in the plugging cavity. A protruding portion protruding radially is provided on the second adjustment member. The second adjustment member can be acted on by the water pressure in the pressure relief cavity so that the protruding portion abuts against the hole shoulder in a direction away from the first adjustment member. When the rotating member rotates relative to the base in one direction, the hole shoulder can abut against the protruding portion and press the second adjustment member downward in the direction of the first adjustment member.

[0024] According to some embodiments of the present invention, an adjustment cavity is provided on the first adjustment member. A plurality of convex strips are provided on the inner wall of the adjustment cavity and are sequentially distributed along the circumference. Slots are formed at intervals between adjacent two convex strips. A slope is provided at the end of the convex strip. An insertion strip is provided on the circumferential side wall of the second adjustment member. The insertion strip can enter and exit the slot.

[0025] A sanitary ware according to the third aspect embodiment of the present invention includes a delay valve core or a delay drain valve.

[0026] The sanitary ware according to the embodiment 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-level water efficiency selection mode.

[0027] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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, in which:

[0029] Figure 1 is a schematic structural diagram of a delay valve core;

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

[0031] Figure 3 is Figure 2 another cross-sectional view of

[0032] Figure 4 It is a schematic structural diagram of the first adjusting part;

[0033] Figure 5 is Figure 4 a schematic diagram of another perspective of

[0034] Figure 6 It is a schematic structural diagram of the first connecting part;

[0035] Figure 7 is Figure 6 a cross-sectional view of

[0036] Figure 8 It is a cross-sectional view of the second connecting part;

[0037] Figure 9 It is a cross-sectional view of the second connecting part;

[0038] Figure 10 It is a schematic diagram of another perspective of the second connecting part;

[0039] Figure 11 It is a schematic structural diagram of the water baffle;

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

[0041] Figure 13 It is a schematic structural diagram of the housing;

[0042] Figure 14 It is a schematic exploded view of the adjusting assembly.

[0043] 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 convex 211; rotating shaft 220; adjusting cavity 230; rib 231; slot 232; inclined surface 233; elastic member 300; first connecting member 400; first round table surface 410; rib 420; groove 430; diversion column 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 round table surface 510; convex ring 511; water passing flow channel 520; reduced diameter section 521; throat section 522; enlarged diameter section 523; shaft section 530; water blocking member 600; plate portion 610; stepped portion 620; first water blocking portion 621; second water blocking portion 622; diversion 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; adjusting assembly 900; second adjusting member 910; protruding portion 911; base 920; rotating member 930; inserting cavity 931; hole shoulder 932; inserting bar 940. Detailed implementation manners

[0044] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, in which 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 by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

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

[0046] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the body 100 is provided with a water inlet area 10, a water control flow channel 104 and a water passing area 103. 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 body 100, and the first adjusting member 200 can rotate on the 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 body 100 from the water inlet area 10, then into the water control flow channel 104, and finally flows out of the body 100 to the outside after flowing through the water control flow channel 104 to the water passing area 103.

[0047] The present invention also relates to a delayed drainage valve, which uses a delayed valve core. The delayed drainage valve further includes a housing 700 and a control valve 800. As Figure 12 and Figure 13 shown, the housing 700 is provided with a water inlet cavity 710, a water outlet cavity 720, a pressure relief cavity 730 and a mounting cavity 740. The mounting cavity 740 is provided with a second water 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, and the second water inlet 741 is opened on the left side of the mounting cavity 740. The second water inlet 741 is communicated with the water inlet cavity 710, the pressure relief port 742 is communicated with the upper part of the pressure relief cavity 730, and the water outlet cavity 720 is communicated below the drain port 743. The water outlet cavity 720 is simultaneously communicated with the lower part of the pressure relief cavity 730. The control valve 800 is installed on the housing 700, and the control valve 800 can be an electromagnetic valve or other manually controlled mechanical valves, etc. The control valve 800 is located at the communicating position between the lower part of the pressure relief cavity 730 and the water outlet cavity 720. The control valve 800 is used to control the communication or cut-off between the pressure relief cavity 730 and the water outlet cavity 720. The delayed valve core is installed in the mounting cavity 740, and the delayed valve core moves up and down relative to the mounting cavity 740 as the water pressure in the housing 700 changes. The water in the water inlet cavity 710 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.

[0048] 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 pipe of the sanitary ware. Under normal conditions, the water inlet cavity 710 is 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 again. 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 pipe. 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, gradually replenishing 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, thus completing the drainage operation.

[0049] 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.

[0050] 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 below 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 is communicated 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, and the part of the water tank 105 not covered by the cover plate 210, that is, the first water outlet 107 constituting the water control flow channel 104. The water control flow channel 104 is communicated 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 far 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 to be gradient, 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 rotates in the direction of increasing 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.

[0051] 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 card slot 109 are provided in the water passing area 103. A plurality of card slots 109 are 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 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 card slot 109 is opened along the radial direction of 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 card slot 109. When the first adjusting member 200 rotates, the clamping protrusion 211 will slide out of the current card slot 109 and then slide into the next adjacent card slot 109. Through the cooperation between the clamping protrusion 211 and the card slot 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 card slot 109 in sequence, and the first adjusting member 200 will jump up and down under the cooperation of the elastic acting force. When not rotating, the clamping protrusion 211 can be kept clamped in the card slot 109 under the elastic acting force.

[0052] 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 interconnected. The first connecting member 400 and the second connecting member 500 can be interconnected 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 penetrates downward through the first connecting member 400. A first circular table surface 410 is provided on the upper side of the first connecting member 400. A plurality of ribs 420 are provided on the first circular table surface 410, and the ribs 420 are sequentially distributed along the circumferential direction of the first circular table surface 410. The 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 ribs 420. The ribs 420 are arranged at intervals, and one end of the gap formed between the 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 ribs 420. A plurality of water inlet channels 101 are defined between the gaps between the 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 in the circumferential direction of the body 100 for convergence. After the water enters the buffer channel 102, the buffer channel 102 is gradually filled, accumulating 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 conveyed to the water control channel 104. The above-mentioned water passing area 103 is formed in the second connecting member 500.

[0053] 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 an enlarged diameter 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 enlarged diameter section 523. The reduced diameter section 521 is tapered upward in the direction of the throat section 522. The enlarged diameter section 523 is flared upward in the direction 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 enlarged diameter section 523 are equal. The upper end of the enlarged diameter 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 enlarged diameter 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 enlarged diameter section 523, accelerating the entry into the water control flow channel 104.

[0054] 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 post 431 and a sand discharge port 432 are provided on the groove 430. The diversion post 431 extends upward on the groove 430. The diversion post 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 post 431, and the flow blocking grooves 433 extend along the axial direction of the diversion post 431. An elastic adjusting ring 450 is sleeved on the diversion post 431, and the adjusting ring 450 can be made of rubber material or the like. After the diversion post 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 post 431. The sand storage cavity 440 is communicated 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 and enters 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 area between the adjusting ring 450 and the flow blocking grooves 433 to ensure the stability of the 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.

[0055] 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.

[0056] In one embodiment, if Figure 1 , Figure 2 and Figure 11As shown in the figure, a water baffle 600 is further provided on the main 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 coaxially positioned. 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 circumferentially. 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 in the axial direction away from the plate portion 610. The plurality of rib portions 630 are sequentially and spaced apart circumferentially along the stepped portion 620. After the time-delay valve core is installed in the installation cavity 740, normally, 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.

[0057] Further, a plurality of flow guiding grooves 623 are provided on the circumferential side wall of the first water blocking portion 621. The flow guiding 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 flow guiding 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.

[0058] Among them, the delay valve core can be installed in the housing 700 for use after adjusting the displacement. It is also possible to adjust the displacement of the delay valve core after installing the delay valve core in the housing 700. In one embodiment, as Figure 12 , Figure 13 and Figure 14 shown, an adjustment assembly 900 is further installed on the housing 700. A second adjustment member 910 is provided on the adjustment assembly 900. The second adjustment member 910 can be translated to be inserted into the first adjustment member 200 and drive the first adjustment member 200 to rotate. The second adjustment member 910 can be translated away from the first adjustment member 200. In this embodiment, the adjustment assembly 900 is located above the delay valve core. In the normal state, the second adjustment member 910 is away from the first adjustment member 200. When it is necessary to adjust the displacement of the water control flow channel 104 of the delay valve core, the second adjustment member 910 is pressed down, the second adjustment member 910 is 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, so as to realize the adjustment of the water control flow channel 104.

[0059] 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 under the action of 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.

[0060] 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 protruding strips 231 are provided on the inner wall of the adjustment cavity 230 and are sequentially distributed along the circumference. The protruding strips 231 extend along the axial direction of the first adjustment member 200. A vertically arranged slot 232 is formed by the interval between two adjacent protruding strips 231. A slope 233 is provided at the top of the protruding 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. Through the cooperation of the insertion strip 940 and the slot 232, the second adjustment member 910 can drive the first adjustment member 200 to rotate.

[0061] 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, and 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 therefore should not be construed as a limitation to the present invention.

[0062] 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.

[0063] 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 internal communication of 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.

[0064] 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", "beneath" and "underneath" 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.

[0065] In the description of this 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 this specification, the schematic representations of the above terms do 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.

[0066] 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, Comprising: A body (100), the 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 communicated 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; A water tank (105) is provided in the water passing area (103), a first water inlet (106) communicating with the water inlet area (10) is opened on the water tank (105), a cover plate (210) is provided on the first adjusting member (200), 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), and a first water outlet (107) communicating with the water passing area (103) is formed at a position on the water tank (105) not covered by the cover plate (210).

2. The delay valve core according to claim 1, characterized in that: 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).

3. The time-delay valve core according to claim 1, wherein: A rotating shaft (220) is provided on the first adjusting member (200), a connection cavity (108) and a plurality of clamping grooves (109) distributed around the connection cavity (108) are provided in the water passing area (103), the water tank (105) extends in an arc shape around the connection cavity (108), the rotating shaft (220) is rotatably and coaxially inserted into the connection cavity (108), an elastic member (300) is provided between the first adjusting member (200) and the water passing area (103), the elastic member (300) applies an elastic acting force to the first adjusting member (200) to press it down onto the water tank (105), a clamping protrusion (211) is provided on the cover plate (210), and the clamping protrusion (211) sequentially enters and exits each of the clamping grooves (109) as the first adjusting member (200) rotates.

4. The delay valve core according to claim 1, wherein: 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) is provided with a first circular table surface (410). A plurality of ribs (420) are arranged on the first circular table surface (410) at intervals in the circumferential direction. The ribs (420) extend along the radial direction of the first circular table surface (410). The first circular table surface (410) is further provided with a groove (430). The position of the groove (430) is closer to the center of the first circular table surface (410) than the ribs (420). The gaps formed between the ribs (420) communicate with the groove (430). The second connecting member (500) is provided with a second circular table surface (510). The second circular table surface (510) abuts against the ribs (420). The gaps between the ribs (420) and the second circular table surface (510) define a plurality of water inlet channels (101). A buffer channel (102) is defined between the second circular table surface (510) and the groove (430). Each water inlet channel (101) communicates with the buffer channel (102) to form the water inlet area (10). The second connecting member (500) is provided with a water passing area (103). The buffer channel (102) communicates between each water inlet channel (101) and the water control channel (104).

5. The delay spool according to claim 4, characterized in that: The water inlet area (10) further includes a water passing channel (520). The second connecting member (500) is provided with the water passing channel (520). The water passing channel (520) communicates the buffer channel (102) and the water control channel (104). The water passing channel (520) includes a reduced diameter section (521), a throat section (522) and an enlarged diameter section (523) which are connected in sequence. The reduced diameter section (521) is closer to the buffer channel (102) than the enlarged diameter section (523). The reduced diameter section (521) is in a gradually reducing reduced diameter shape towards the throat section (522). The enlarged diameter section (523) is in a gradually expanding enlarged diameter shape away from the throat section (522). 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 enlarged diameter section (523) are equal.

6. The time-delay valve core according to claim 5, characterized in that: The first connecting member (400) is provided with a sand storage cavity (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 reduced diameter section (521). A plurality of flow blocking grooves (433) are formed on the circumferential wall of the guide column (431). The flow blocking 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 reduced diameter section (521). The sand storage cavity (440) communicates with the groove (430) through the sand discharge port (432).

7. The delay valve core according to any one of claims 4 to 6, characterized in that: A flow-blocking gap (110) for blocking solid impurities is formed at an interval between the first circular table surface (410) and the second circular table surface (510), and the flow-blocking gap (110) is arranged around the outer ends of the ribs (420).

8. The delay valve core according to claim 1 or 4, characterized in that: A water-blocking member (600) is further provided on the body (100). The water-blocking member (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. 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 coaxially positioned. 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 that of the second water-blocking portion (622) in the axial direction. A plurality of the rib portions (630) extend axially from the stepped portion (620) in a direction away from the plate portion (610), and the plurality of the rib portions (630) are sequentially and spaced apart along the circumferential direction of the stepped portion (620).

9. The delay valve core according to claim 8, characterized in that: A plurality of flow guide grooves (623) are provided on the circumferential side wall of the first water-blocking portion (621), and the flow guide grooves (623) are arranged along the axial direction of the stepped portion (620).

10. A time-delay drain valve, characterized in that: It includes a housing (700), a control valve (800), and the time-delay valve core according to any one of claims 1 to 9. An inlet chamber (710), an outlet chamber (720), a pressure relief chamber (730), and an installation chamber (740) are provided in the housing (700). The installation chamber (740) is provided with a second inlet (741) communicating with the inlet chamber (710), a pressure relief port (742) communicating with the pressure relief chamber (730), and a drain port (743) communicating with the outlet chamber (720). The time-delay valve core is movably installed in the installation chamber (740). The second inlet (741) is communicated with the pressure relief chamber (730) through the inlet area (10), the control water flow passage (104), the water passing area (103), and the pressure relief port (742). The control valve (800) controls the on-off between the pressure relief chamber (730) and the outlet chamber (720). When the time-delay valve core moves in the installation chamber (740), it controls the on-off between the second inlet (741) and the drain port (743).

11. The time-delay drain valve according to claim 10, wherein: An adjustment assembly (900) is further installed on the housing (700). A second adjustment member (910) is provided on the adjustment assembly (900). The second adjustment member (910) can be translated to be inserted into the first adjustment member (200) and drive the first adjustment member (200) to rotate, and the second adjustment member (910) can be translated to be away from the first adjustment member (200).

12. The delay drainage valve according to claim 11, wherein: The adjusting assembly (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 threadedly connected to the base (920). 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 shoulder (932) is provided in the plugging cavity (931). A protruding portion (911) protruding radially is provided on the second adjusting member (910). The second adjusting member (910) can be affected by the water pressure in the pressure relief cavity (730) such that the protruding portion (911) abuts 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 shoulder (932) can abut against the protruding portion (911) and press the second adjusting member (910) downward in the direction of the first adjusting member (200).

13. The delay drainage valve according to any one of claims 11 or 12, characterized in that: An adjusting cavity (230) is provided on the first adjusting member (200). A plurality of circumferentially distributed ribs (231) are provided on the inner wall of the adjusting cavity (230). Slots (232) are formed at intervals between two adjacent ribs (231). An inclined surface (233) is provided at the end of the rib (231). A plug (940) is provided on the circumferential side wall of the second adjusting member (910). The plug (940) can enter and exit the slot (232).

14. A sanitary ware, characterized in that: Including the time-delay valve core according to any one of claims 1 to 9 or the time-delay drain valve according to any one of claims 10 to 13.

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