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

Technical Field

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

[0002] As society's demand for green, environmentally friendly and energy-saving products increases, flush valve products in particular require water efficiency to reach level 2 or above. Level 1 water efficiency ≦5L, level 2 water efficiency ≦6L, level 3 water efficiency 8L. At the same time, considering the actual flushing performance of the product, the average water consumption cannot be less than 4L, which leaves too small a threshold for controlling the average water consumption of the product. Level 1 is 1L, level 2 is 2L, and level 3 is 4L. There are many factors that affect the average water consumption of toilet flush valves, including the flush valve itself, the squat toilet it is equipped with, and the drainage pipes that match the flush valve and squat toilet.

[0003] At present, the water-saving technology of flush valves is generally customized by molding the valve core structure according to the water efficiency requirements at the factory. Different water efficiency levels need to be adjusted to replace the corresponding water efficiency accessories, such as flow limiters, constant current devices, limiters, etc., or to be equipped with flow regulating devices. This results in low adaptability of the product and high implementation costs. Summary of the invention

[0004] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, 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 sanitary ware having the time-delay valve core.

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

[0008] A body, wherein the body is provided with a water inlet area, a water control channel and a water passing area, and the water control channel is connected between the water inlet area and the water passing area;

[0009] A first adjusting member is rotatably mounted on the main body, and the water control channel is configured to change the drainage flow 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 of the water control channel is adjusted by the first adjusting member to achieve multi-level water efficiency adjustment to be suitable for 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 trough is provided in the water flow area, a first water inlet connected to the water inlet area is opened on the water trough, a cover plate is provided on the first adjusting member, the cover plate covers the water trough to define the water control channel between the water trough and the water trough, and a first water outlet connected to the water flow area is formed at a position on the water trough that is 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 first water inlet toward 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 slots distributed around the connecting cavity are provided in the water flow area, the water trough extends in an arc shape around the connecting cavity, the rotating shaft is rotatably and coaxially inserted in the connecting cavity, an elastic member is provided between the first adjusting member and the water flow area, the elastic member applies an elastic force to the first adjusting member to press it down onto the water trough, and a locking protrusion is provided on the cover plate, and the locking protrusion enters and exits each of the slots in sequence as the first adjusting member rotates.

[0014] According to some embodiments of the present invention, the main body includes a first connecting member and a second connecting member that are interconnected, the first connecting member is provided with a first frustum, the first frustum is provided with a plurality of ribs that are circumferentially spaced in sequence, the ribs extending radially along the first frustum, the first frustum is also provided with a groove, the groove is located closer to the center of the first frustum than the ribs, and the gaps formed between the ribs are connected to the grooves; the second connecting member is provided with a second frustum, the second frustum abuts against the ribs, a plurality of water inlet channels are defined between the gaps between the ribs and the second frustum, a buffer channel is defined between the second frustum and the groove, each of the water inlet channels is connected to the buffer channel to form the water inlet area, the water passing area is provided on the second connecting member, and the buffer channel is connected between each of the water inlet channels and the water control channel.

[0015] According to some embodiments of the present invention, the water inlet area also includes a water flow channel, the water flow channel is opened on the second connecting member, the water flow channel connects the buffer flow channel and the water control flow channel, the water flow channel includes a necking section, a throat section and a flaring section connected in sequence, the necking section is closer to the buffer flow channel than the flaring section, the necking section is in a gradually narrowing necking shape toward the throat section, and the flaring section is in a gradually widening flaring shape away from the throat section, and the minimum inner diameter of the necking section, the inner diameter of the throat section and the minimum inner diameter of the flaring section are equal.

[0016] According to some embodiments of the present invention, a sand storage cavity is provided on the first connecting member, a guide column and a sand discharge port are provided on the groove, the guide column is coaxially inserted into the necking section, a plurality of baffle grooves are provided on the peripheral wall of the guide column, the baffle grooves extend along the axial direction of the guide column, an elastic adjustment ring is sleeved on the guide column, the adjustment ring abuts against the necking section; the sand storage cavity is connected to 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 between the first frustum surface and the second frustum surface, and the flow-blocking gap is arranged around the outer end of each of the convex ribs.

[0018] According to some embodiments of the present invention, a water retaining member is further provided on the main body, and the water retaining member includes a plate portion, a step portion and a rib portion, the plate portion is in the shape of a circular plate, the step portion is in the shape of a cylinder with an outer diameter smaller than that of the plate portion, the step portion and the plate portion are in a coaxial position, the step portion includes a first water retaining portion and a second water retaining portion distributed along the circumferential direction, the axial thickness of the first water retaining portion is greater than the axial thickness of the second water retaining portion, a plurality of the rib portions extend from the step portion along the axial direction in a direction away from the plate portion, and the plurality of the rib portions are distributed in sequence along the circumferential direction of the step portion.

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

[0020] According to the second aspect of the present invention, the time-delay drain valve comprises a shell, a control valve and a time-delay valve core, wherein the shell is provided with a water inlet chamber, a water outlet chamber, a pressure relief chamber and an installation chamber, wherein the installation chamber is provided with a second water inlet connected to the water inlet chamber, a pressure relief port connected to the pressure relief chamber and a drain port connected to the water outlet chamber, wherein the time-delay valve core is movably installed in the installation chamber, wherein the second water inlet is connected to the pressure relief chamber via the water inlet area, the water control channel, the water flow area and the pressure relief port, wherein the control valve controls the on-off connection between the pressure relief chamber and the water outlet chamber, and wherein the time-delay valve core controls the on-off connection between the second water inlet and the drain port when moving in the installation chamber.

[0021] The time-delay drain valve according to the embodiment of the present invention has at least the following beneficial effects: the time-delay drain valve is applied to different products, and according to the drainage requirements of the products, the drainage flow rate of the water control channel is adjusted by the first adjustment member to achieve multi-level water efficiency adjustment, so as to be applicable to different water-using products. The overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0022] According to some embodiments of the present invention, an adjustment component is also installed on the shell, and a second adjustment member is provided on the adjustment component. 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 to be away from the first adjustment member.

[0023] According to some embodiments of the present invention, the adjustment assembly also includes a base and a rotating member, the base is fixed on the shell, the rotating member is connected to the base by a thread, the rotating member is provided with a plug-in cavity connected to the pressure relief chamber, the second adjustment member is coaxially and movably inserted in the plug-in cavity, the plug-in cavity is provided with a hole shoulder, the second adjustment member is provided with a protrusion protruding in the radial direction, the second adjustment member can be affected by the water pressure of the pressure relief chamber so that the protrusion abuts against the hole shoulder in a direction away from the first adjustment member, and when the rotating member rotates in one direction relative to the base, the hole shoulder can abut against the protrusion 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 distributed in sequence along the circumferential direction are provided on the inner wall of the adjustment cavity, a slot is formed between two adjacent convex strips, an inclined surface is provided on the end of the convex strip, and an insertion strip is provided on the circumferential side wall of the second adjustment member, and the insertion strip can enter and exit the slot.

[0025] The sanitary ware according to the third aspect of the embodiment of the present invention includes a time-delay valve core or a time-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 the displacement, and provides a multi-level water effect selection mode.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through 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 apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is a structural diagram of the time-delay valve core;

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

[0031] Figure 3 yes Figure 2 Another cross-sectional schematic diagram of;

[0032] Figure 4 is a schematic structural diagram of a first adjusting member;

[0033] Figure 5 yes Figure 4 Schematic diagram from another perspective;

[0034] Figure 6 is a schematic structural diagram of a first connecting member;

[0035] Figure 7 yes Figure 6 A cross-sectional view of

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

[0037] Fig. 9 is a cross-sectional view of the second connecting member;

[0038] Fig.10 is a schematic diagram of the second connecting member from another perspective;

[0039] Fig.11 It is a structural schematic diagram of a water retaining member;

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

[0041] Fig.13 It is a schematic diagram of the structure of the shell;

[0042] Fig.14 It is a schematic diagram of the structural decomposition of the regulating component.

[0043] Reference numerals: body 100; water inlet area 10; water inlet channel 101; buffer channel 102; water passing area 103; water control channel 104; water tank 105; first water inlet 106; first water outlet 107; connecting cavity 108; clamping groove 109; flow blocking gap 110; first adjusting member 200; cover plate 210; clamping protrusion 211; rotating shaft 220; adjusting cavity 230; protruding strip 231; slot 232; inclined surface 233; elastic member 300; first connecting member 400; first round table surface 4 10; convex rib 420; groove 430; guide column 431; sand discharge port 432; flow blocking groove 433; sand blocking platform 434; sand storage chamber 440; adjustment ring 450; second connecting member 500; second round table surface 510; convex ring 511; water flow channel 520; constriction section 521; throat section 522; expansion section 523; shaft section 530; water retaining member 600; plate portion 610; stepped portion 620; first water retaining portion 621; second water retaining portion 622; guide groove 623; rib portion 630; Shell 700; water inlet chamber 710; water outlet chamber 720; pressure relief chamber 730; installation chamber 740; second water inlet 741; pressure relief port 742; water outlet 743; control valve 800; adjustment assembly 900; second adjustment member 910; protrusion 911; base 920; rotating member 930; plug-in chamber 931; hole shoulder 932; insertion strip 940. DETAILED DESCRIPTION

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

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

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the main body 100 is provided with a water inlet area 10, a water control channel 104 and a water passing area 103. The water inlet area 10, the water control 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 be rotated on the main body 100. The water control channel 104 is connected between the water inlet area 10 and the water passing area 103. The water control channel 104 is configured so that when the first adjusting member 200 rotates, the first adjusting member 200 can change the drainage flow rate of the water control channel 104 to the water passing area 103. When water is passed, water flows from the water inlet area 10 into the main body 100, and then flows into the water control channel 104, and finally is discharged to the outside of the main body 100 from the water control channel 104 after passing through the water area 103.

[0047] The present invention also relates to a time-delay drain valve, which uses a time-delay valve core. The time-delay drain valve also includes a housing 700 and a control valve 800. Fig.12 and Fig.13 As shown, a water inlet chamber 710, a water 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 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 distributed up and down, and the second water inlet 741 is opened on the left side of the installation 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 drain 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 a solenoid valve or other manually controlled mechanical valve. The control valve 800 is located at the communication 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 installation chamber 740, and the time delay valve core moves up and down relative to the installation 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 channel 104, the water passing area 103, and the pressure relief port 742.

[0048] In actual use, the time-delay valve core or the time-delay drain valve can be applied to sanitary ware such as urinals, squat toilets and other products. The water inlet chamber 710 is connected to an external water supply system such as a tap water pipe. The water outlet chamber 720 is connected to the flushing pipe of the sanitary ware. Under normal conditions, the water inlet chamber 710 and the external water supply system are kept flowing, and the control valve 800 is kept in a state of shutting off the pressure relief chamber 730 and the water outlet chamber 720, that is, the pressure relief chamber 730 and the water outlet chamber 720 are not flowing with water. The water in the water inlet chamber 710 flows into the pressure relief chamber 730 through the second water inlet 741, the water inlet area 10, the water control channel 104, the water passing area 103, and the pressure relief port 742, and the water in the pressure relief chamber 730 remains full. At this time, under the water pressure of the water inlet chamber 710 and the pressure relief chamber 730 and the gravity of the delay valve core, the delay valve core descends and remains in the position of blocking the drain port 743. When drainage is required, the control valve 800 is opened, the pressure relief chamber 730 is connected to the water outlet chamber 720, and the water in the pressure relief chamber 730 is discharged outward through the water outlet chamber 720. After the pressure relief chamber 730 is depressurized, the control valve 800 is used to shut off the pressure relief chamber 730 and the water outlet chamber 720. After the pressure relief chamber 730 is depressurized, the time delay valve core is lifted up under the water pressure of the water inlet chamber 710, the drain port 743 is opened, and water is discharged from the water inlet chamber 710 through the second water inlet port 741, the installation chamber 740, and the drain port 743 to the water outlet chamber 720 and discharged to the flushing pipe. At the same time, water can flow into the pressure relief chamber 730 through the second water inlet 741, the water inlet area 10, the water control channel 104, the water passing area 103, and the pressure relief port 742, gradually replenishing the pressure relief chamber 730 with water, and the water pressure in the water inlet chamber 710 and the pressure relief chamber 730 gradually tends to be balanced. Under the action of the delay valve core's own gravity, the delay valve core gradually descends until it descends to block the drain port 743, thereby completing the drainage operation.

[0049] During the water replenishment process of the pressure relief chamber 730, the water replenishment completion time of the pressure relief zone is determined according to the drainage flow rate of the water control channel 104 to the water passing area 103, that is, the drainage time of the delayed drainage valve is determined. The delayed drainage valve is applied to different products. According to the drainage requirements of the products, the drainage flow rate of the water control channel 104 is adjusted by the first adjustment member 200 to achieve multi-level water efficiency adjustment to be suitable for different water-using products. The overall structure is simple, the adjustment is convenient, and the applicability is wide.

[0050] In one embodiment, if Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig. 9As shown, the water flow area 103 is a cavity structure, and a water tank 105 is provided on the lower side of the water flow area 103. A first water inlet 106 is provided on the water tank 105. The first water inlet 106 can be located at one end of the water tank 105, and the first water inlet 106 is connected to the water inlet area 10. A cover plate 210 is provided on the first adjusting member 200, and the cover plate 210 is arranged around the central axis of the first adjusting member 200. The shape of the cover plate 210 depends on the direction 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 in a fan shape. The cover plate 210 covers the top of the water tank 105, and the above-mentioned water control channel 104 is defined between the lower side of the cover plate 210 and the water tank 105. In order for the water control 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 portion of the water tank 105 not covered by the cover plate 210 constitutes the first water outlet 107 of the water control channel 104. The water control channel 104 is connected to 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 coverage area of ​​the water tank 105 by the cover plate 210 will be changed, that is, the opening size of the first water outlet 107 will be changed, so as to adjust the drainage flow rate of the water control channel 104 to the water passing area 103. When the first water outlet 107 is reduced, the drainage flow rate of the water control channel 104 becomes smaller; when the first water outlet 107 is expanded, the drainage flow rate of the water control channel 104 becomes larger. Among them, the water trough 105 can be set as a trough body with equal depth at each position. It can also be that the depth of the water trough 105 is set to be gradual, and the depth of the water trough 105 gradually becomes shallower from the first water inlet 106 to the first water outlet 107. That is, the water flow cross-section of the water control channel 104 from the first water inlet 106 to the first water outlet 107 gradually decreases. When the first adjusting member 200 rotates in the direction in which the first water outlet 107 becomes larger, the increase in the drainage flow rate of the first water outlet 107 will change incrementally when the first adjusting member 200 rotates at the same angle. Among them, one, two or more water troughs 105 can be set on the water flow area 103, and the first adjusting member 200 is provided with a cover plate 210 corresponding to the number of water troughs 105. One cover plate 210 is correspondingly covered on one water trough 105, thereby forming multiple water control channels 104. When the first adjusting member 200 rotates, the drainage flow rate of each water control channel 104 increases or decreases synchronously.

[0051] Based on the above embodiments, 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 is formed by radially extending 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 and arranged around the connecting cavity 108. The water tank 105 extends around the connecting cavity 108 in an arc shape. The rotating shaft 220 is coaxially inserted in the connecting cavity 108, and the first adjusting member 200 rotates relative to the water passing area 103 through the rotation of 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 card protrusion 211 is provided on the lower side of the cover plate 210. The card protrusion 211 can slide into the card slot 109. When the first adjusting member 200 rotates, the card protrusion 211 will slide out of the current card slot 109 and then slide into the next adjacent card slot 109. Through the cooperation of the clamping protrusion 211 and the clamping groove 109, the first adjusting member 200 can be prevented from rotating automatically under non-human rotation operation, so that the first adjusting member 200 is positioned at the current position. An elastic member 300 is provided between the first adjusting member 200 and the water flow area 103. The elastic member 300 can be selected from springs, etc. It can be that a cover is installed on the upper side of the water flow 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, 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 applies an elastic force to the first adjusting member 200, and the elastic force presses the cover plate 210 down onto the water tank 105. When the first adjusting member 200 rotates, the clamping protrusion 211 slides in and out of each clamping groove 109 in sequence, and the first adjusting member 200 jumps up and down under the cooperation of the elastic force. When not rotating, the latching protrusion 211 can remain latched in the latching slot 109 under the elastic force.

[0052] In one embodiment, if 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 connected to each other. The first connecting member 400 and the second connecting member 500 can be connected to each other by plugging. For example, a shaft section 530 extends from the bottom of the second connecting member 500, and the shaft section 530 is downwardly penetrated into the first connecting member 400. A first frustum 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 frustum surface 410, and each convex rib 420 is sequentially distributed along the circumference of the first frustum surface 410. The convex rib 420 extends along the radial direction of the first frustum surface 410. A groove 430 is also provided on the first frustum surface 410. The position of the groove 430 is closer to the center of the first frustum surface 410 than the convex rib 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 frustum surface 410. A second frustum surface 510 is provided on the lower side of the second connecting member 500. The second frustum surface 510 abuts against each convex rib 420. A plurality of water inlet channels 101 are defined between the gaps between each convex rib 420 and the second frustum surface 510. A buffer channel 102 is defined between the second frustum surface 510 and the groove 430, and each water inlet channel 101 is connected to 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 is connected between each water inlet channel 101 and the water control channel 104. After water enters the installation cavity 740, water flows from each water inlet channel 101 in the circumference of the main body 100 into the buffer channel 102 for convergence. After water enters the buffer channel 102, it gradually fills the buffer channel 102, accumulating static pressure strong energy for subsequent fluid to enter the water control channel 104. After the buffer channel 102 is filled with water, it is transported to the water control channel 104. The water passing area 103 is formed in the second connecting member 500.

[0053] Based on the above embodiment, further, Figure 2 , Figure 3 and Fig. 9As shown, the water inlet area 10 also includes a water flow channel 520. The water flow channel 520 is opened on the second connecting member 500. The water flow channel 520 is vertically arranged, the buffer flow channel 102 is located below the water flow channel 520, and the water control flow channel 104 is 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 constriction section 521, a throat section 522 and a flare section 523 that are connected in sequence from bottom to top. The constriction section 521 is closer to the buffer flow channel 102 than the flare section 523. The constriction section 521 is in a constriction shape that gradually shrinks upward in the direction of the throat section 522. The flare section 523 is in a flare shape that gradually expands upward in a direction away from the constriction section 521. The throat section 522 is cylindrical. The minimum inner diameter of the constricted section 521, the inner diameter of the throat section 522 and the minimum inner diameter of the expanded section 523 are equal. The upper end of the expanded section 523 constitutes the first water inlet 106. When water flows through the water flow channel 520, the water flows through the constricted section 521, the throat section 522 and the expanded section 523 in sequence. Due to the changes in the inner diameters of the constricted section 521, the throat section 522 and the expanded section 523, the water flow velocity increases and enters the water control flow channel 104 at an accelerated speed.

[0054] Further, such as Figure 2 , Figure 7 and Fig. 9As shown, the first connecting member 400 is provided with a sand storage chamber 440, and the sand storage chamber 440 is located below the groove 430. The groove 430 is provided with a guide column 431 and a sand discharge port 432. The guide column 431 extends upward on the groove 430. The guide column 431 is coaxially inserted into the constriction section 521. A plurality of flow blocking grooves 433 are provided on the peripheral wall of the guide column 431, and the flow blocking grooves 433 extend along the axial direction of the guide column 431. The guide column 431 is sleeved with an elastic adjustment ring 450, and the adjustment ring 450 can be made of rubber material, etc. After the guide column 431 is inserted into the constriction section 521, the outer wall of the adjustment ring 450 abuts against the lower end of the constriction section 521. The sand discharge port 432 can be set on both sides of the lower end of the guide column 431. The sand storage chamber 440 is connected with the groove 430 through the sand discharge port 432. When water is flowing, water flows from the water control channel 104 into the flow blocking groove 433, and then flows upward along the flow blocking groove 433 into the constricted section 521. The adjusting ring 450 will expand and contract to a certain extent according to the change in water pressure flowing through the flow blocking groove 433. As the water pressure increases, the adjusting ring 450 will expand radially outward; as the water pressure decreases, the adjusting ring 450 will shrink radially, thereby automatically adjusting the water flow area between the adjusting ring 450 and the flow blocking groove 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 groove 433, some solid impurities such as sand in the water body can be blocked and separated. Solid impurities cannot enter the water flow channel 520 through the flow blocking groove 433. The separated solid impurities will fall back and concentrate in the water flow channel 520, and fall into the sand storage chamber 440 through the sand discharge port 432 for storage. This prevents mud and sand from entering the water control channel 104 and causing blockage. A sand blocking platform 434 may be provided on the groove 430 , and the sand blocking platform 434 can block the sediment that falls back into the water control flow channel 104 from continuously flowing along the water control flow channel 104 .

[0055] Further, such as Figure 1 , Figure 2 , Figure 7 and Fig.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 Fig.11As shown, the body 100 is also provided with a water retaining member 600. The water retaining 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, 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 is in a coaxial position with the plate portion 610. 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 with the shaft section 530 through the stepped portion 620, so that the plate portion 610 and the first connecting member 400 are locked and fixed between the second connecting member 500 and the stepped portion 620. The stepped portion 620 includes a first water retaining portion 621 and a second water retaining portion 622 distributed in the circumferential direction. The thickness dimension of the first water retaining portion 621 in the axial direction is greater than the thickness dimension of the second water retaining portion 622 in the axial direction. A plurality of rib portions 630 extend downwardly from the step portion 620 in the axial direction in a direction away from the plate portion 610. The plurality of rib portions 630 are spaced in sequence along the circumferential direction of the step portion 620. After the delay valve core is installed in the installation cavity 740, the plate portion 610 normally covers the drain port 743 to block the drain port 743. The outer diameter of the step portion 620 is adapted to the drain port 743. The step portion 620 and the rib portion 630 are downwardly penetrated into the drain port 743. When in use, in the process of the delay valve core gradually resetting from a position away from the drain port 743 to a direction of blocking the drain port 743, water initially flows through the drain port 743 from the intervals between the rib portions 630, and the drainage volume is at its maximum at this time. As the delay valve core descends, the first water retaining portion 621 first enters the drain port 743. At this time, there is still a certain gap between the second water retaining portion 622 and the drain port 743. At this time, water is discharged from the gap between the second water retaining portion 622 and the drain port 743 to the water outlet chamber 720, and the amount of water discharged is smaller than that at the beginning. The delay valve core continues to descend, and the second water retaining portion 622 enters the drain port 743, and the rear 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 amount of water discharged from the drain port 743 is reduced in stages, so that the delay valve core will not descend too quickly to cause water hammer.

[0057] Furthermore, a plurality of guide grooves 623 are provided on the circumferential side wall of the first water retaining portion 621. The guide grooves 623 are arranged along the axial direction of the step portion 620. During the descending process of the delay valve core relative to the drain port 743, after the first water retaining portion 621 and the second water retaining portion 622 enter the drain port 743, 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 guide grooves 623, thereby preventing the plate portion 610 from being pressed down on the drain port 743 due to excessive water pressure when the first water retaining portion 621 and the second water retaining portion 622 enter the drain port 743, thereby preventing water hammer caused by the plate portion 610 being pressed down on the drain port 743 instantaneously.

[0058] The time delay valve core can be installed in the housing 700 for use after adjusting the displacement. Alternatively, the time delay valve core can be installed in the housing 700 and then the displacement of the time delay valve core can be adjusted. Fig.12 , Fig.13 and Fig.14 As shown, an adjustment component 900 is also installed on the housing 700. A second adjustment member 910 is provided on the adjustment component 900. The second adjustment member 910 can be translated to be plugged into the first adjustment member 200 and drive the first adjustment member 200 to rotate. The second adjustment member 910 can be translated to be away from the first adjustment member 200. In this embodiment, the adjustment component 900 is located above the delay valve core. Under normal circumstances, 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 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 achieve the adjustment of the water control channel 104.

[0059] 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 inserted into the base 920, and the rotating member 930 and the base 920 are connected by threads. The rotating member 930 is connected by threads so as to be lifted and lowered relative to the base 920 when rotating. The rotating member 930 is provided with an inserting cavity 931 which is connected with the pressure relief cavity 730. The second adjusting member 910 is coaxially and movably inserted into the inserting cavity 931. A sealing ring can be provided between the rotating member 930 and the base 920, and a sealing ring can be provided between the second adjusting member 910 and the inserting cavity 931, so as to prevent the water in the pressure relief cavity 730 from leaking out through the adjusting assembly 900. A hole shoulder 932 is provided in the inserting cavity 931, and a protrusion 911 protruding in the radial direction is provided on the second adjusting member 910. The outer diameter of the protrusion 911 is greater than the inner diameter of the hole shoulder 932. The second adjusting member 910 can be subjected to the water pressure of the pressure relief chamber 730 so that the protrusion 911 abuts upward on 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 on the protrusion 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. There is water in the pressure relief chamber 730, and the second adjusting member 910 moves upward to a position away from the first adjusting member 200 under the water pressure of the adjusting member. 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 into the first adjusting member 200. Then the second adjusting member 910 is rotated alone, thereby driving the first adjusting member 200 to rotate. When the rotating member 930 rotates counterclockwise and moves upward, the second adjusting member 910 moves upward and away from the first adjusting member 200 under the action of the water pressure in the pressure relief chamber 730 .

[0060] Further, such as Figure 4 , Fig.12 and Fig.14As shown, the first adjusting member 200 is provided with an adjusting cavity 230. The inner wall of the adjusting cavity 230 is provided with a plurality of convex strips 231 distributed in sequence along the circumferential direction. The convex strips 231 extend along the axial direction of the first adjusting member 200. A vertically arranged slot 232 is formed between two adjacent convex strips 231. An inclined surface 233 is provided at the top of the convex strip 231, and an insert strip 940 is provided on the circumferential side wall of the second adjusting member 910. The insert strip 940 can enter and exit the slot 232. When the second adjusting member 910 descends, the insert strip 940 is inserted into the adjusting cavity 230 along with the second adjusting member 910. The insert strip 940 will abut against the inclined surface 233, and then as the second adjusting member 910 descends, the insert strip 940 slides down along the inclined surface 233 and enters the slot 232. The cooperation between the insert strip 940 and the slot 232 enables the second adjusting member 910 to drive the first adjusting member 200 to rotate.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, 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 and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] In the description of this specification, the description of reference terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this 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 can 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, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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) is rotatably mounted on the body (100), and the water control channel (104) is configured to change the drainage flow to the water flow area (103) as the first adjusting member (200) rotates.

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 5, characterized in that: The water inlet area (10) further comprises a water flow channel (520), the water flow channel (520) being provided on the second connecting member (500), the water flow channel (520) connecting the buffer flow channel (102) and the water control flow channel (104), the water flow channel (520) comprising a necking section (521), a throat section (522) and a flaring section (523) which are connected in sequence, the necking section (521) being closer to the buffer flow channel (102) than the flaring section (523), the necking section (521) being in a gradually narrowing necking shape in a direction towards the throat section (522), the flaring section (523) being in a gradually widening flaring shape in a direction away from the throat section (522), the minimum inner diameter of the necking section (521), the inner diameter of the throat section (522) and the minimum inner diameter of the flaring section (523) being 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 any one of claims 5 to 7, 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 or 5, characterized in that: The body (100) is also provided with a water retaining member (600), the water retaining member (600) comprising a plate portion (610), a step portion (620) and a rib portion (630), the plate portion (610) being in the shape of a circular plate, the step portion (620) being in the shape of a cylinder having an outer diameter smaller than that of the plate portion (610), the step portion (620) being coaxial with the plate portion (610), the step portion (620) comprising a first water retaining member (621) and a second water retaining member (622) distributed in a circumferential direction, the axial thickness of the first water retaining member (621) being greater than the axial thickness of the second water retaining member (622), a plurality of rib portions (630) extending from the step portion (620) in the axial direction in a direction away from the plate portion (610), and the plurality of rib portions (630) being distributed in sequence and spaced apart in the circumferential direction of the step portion (620).

10. The time-delay valve core according to claim 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: The invention comprises a housing (700), a control valve (800) and a time-delay valve core according to any one of claims 1 to 10, wherein the housing (700) is provided with a water inlet chamber (710), a water outlet chamber (720), a pressure relief chamber (730) and an installation chamber (740), wherein the installation chamber (740) is provided with a second water inlet (741) communicating with the water inlet chamber (710), a pressure relief port (742) communicating with the pressure relief chamber (730) and a water outlet (743) communicating with the water outlet chamber (720), and the time-delay valve core is movable. The second water inlet (741) is connected to the pressure relief chamber (730) through the water inlet area (10), the water control channel (104), the water flow area (103) and the pressure relief port (742); the control valve (800) controls the connection between the pressure relief chamber (730) and the water outlet chamber (720); and the delay valve core controls the connection between the second water inlet (741) and the water outlet (743) when moving in the installation chamber (740).

12. The time-delay drain valve according to claim 11, characterized in that: An adjustment component (900) is also mounted on the housing (700), and a second adjustment member (910) is provided on the adjustment component (900). The second adjustment member (910) can be translated to be plugged into the first adjustment member (200) and drive the first adjustment member (200) to rotate. The second adjustment member (910) can be translated to be away from the first adjustment member (200).

13. The time-delay drain valve according to claim 12, characterized in that: The adjustment assembly (900) further comprises a base (920) and a rotating member (930), wherein the base (920) is fixed on the housing (700), the rotating member (930) is connected to the base (920) via threads, the rotating member (930) is provided with a plug-in cavity (931) which is in communication with the pressure relief cavity (730), the second adjustment member (910) is coaxially and movably plugged into the plug-in cavity (931), the plug-in cavity (931) is provided with a hole shoulder (932), and the second adjustment member (910) is provided with a hole shoulder (932). 0) is provided with a protruding portion (911) protruding in the radial direction, the second adjusting member (910) can be subjected to the water pressure of the pressure relief chamber (730) so that the protruding portion (911) abuts against the hole shoulder (932) in a direction away from the first adjusting member (200), and when the rotating member (930) rotates in one direction relative to the base (920), the hole 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).

14. The time-delay drain valve according to any one of claims 12 or 13, characterized in that: The first adjusting member (200) is provided with an adjusting cavity (230), the inner wall of the adjusting cavity (230) is provided with a plurality of convex strips (231) sequentially distributed along the circumferential direction, a slot (232) is formed between two adjacent convex strips (231), an inclined surface (233) is provided on the end of the convex strip (231), and an insert strip (940) is provided on the circumferential side wall of the second adjusting member (910), and the insert strip (940) can enter and exit the slot (232).

15. A sanitary ware, characterized in that: It comprises the time-delay valve core as described in any one of claims 1 to 10 or the time-delay drain valve as described in any one of claims 11 to 14.

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