A time delay valve and water outlet device

Abstract

The present invention discloses a time-delay valve and a water outlet device, wherein the time-delay valve includes a valve body, a cavity structure, and a valve core, wherein the valve body is provided with an overflow channel; the cavity structure is located in the valve body, and the cavity structure includes a drive chamber and a sealed balance chamber, wherein a one-way flow channel and a time-delay channel are provided between the drive chamber and the sealed balance chamber; the valve core is provided with a first sealing portion and a second sealing portion, the valve core is movably provided in the valve body, and one end thereof extends from one end of the valve body, the first sealing portion is sealed and slidably engaged with the drive chamber, and the valve core has a first position and a second position in its movable stroke, wherein in the first position, the first sealing portion seals the overflow channel, and in the second position, the first sealing portion opens the overflow channel. The present invention aims to solve the problem that the existing time-delay valve is unstable in use due to the influence of water quality, water pressure, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of time-delay water valves, and in particular to a time-delay valve. Background Art

[0002] Existing time-delay valves generally connect the inner cavity of the valve body to the tap water pipe, and the pressure of the tap water entering the inner cavity pushes against the valve core to close the water outlet. Obviously, with this arrangement, the force applied by the user to press the valve core to open the water outlet is related to the water pressure of the tap water. When the tap water pressure is unstable, the operation of the time-delay valve is also unstable. In addition, dirt and sediment in the tap water may be retained in the valve body and accumulate over time, affecting the normal operation of the valve core and shortening its service life. Therefore, there is an urgent need for a self-controlled time-delay valve to break away from the current situation of relying on the water pressure of the tap water to achieve its function and solve the above-mentioned defects. Summary of the Invention

[0003] The main purpose of the present invention is to provide a time delay valve and a water outlet device, aiming to solve the problem that the existing time delay valve is affected by water quality, water pressure, etc. and is unstable in use.

[0004] To achieve the above objectives, the present invention provides a time delay valve, wherein the time delay valve comprises:

[0005] A valve body provided with a flow passage;

[0006] a cavity structure located in the valve body, the cavity structure including a drive cavity and a sealed balancing cavity, a one-way flow channel and a delay channel being provided between the drive cavity and the sealed balancing cavity, the one-way flow channel flowing from the drive cavity to the sealed balancing cavity, the sealed balancing cavity being configured to elastically deform in volume as the internal cavity pressure changes; and

[0007] A valve core is provided with a first sealing portion and a second sealing portion. The valve core is movably provided on the valve body, and one end of the valve core extends from one end of the valve body. The first sealing portion is sealed and slidably fitted with the drive chamber. The valve core has a first position and a second position in its movable stroke. In the first position, the first sealing portion seals the flow channel, and the volume of the sealed chamber defined by the second sealing portion and the drive chamber is v1. In the second position, the first sealing portion opens the flow channel, and the volume of the sealed chamber defined by the second sealing portion and the drive chamber is v2, and v1 is greater than v2.

[0008] Optionally, the sealed balancing chamber is arranged in the inner cavity of the valve core and is connected to the driving chamber through an opening located on the second sealing portion. A one-way valve structure is provided at the opening to form the one-way flow channel.

[0009] Optionally, the one-way valve structure includes a sealing gasket arranged at the opening, and an elastic structure for resetting the sealing gasket, the sealing gasket has a closed state for sealing the opening and an open state for opening the opening, and the elastic structure is used to maintain the closed state of the sealing gasket.

[0010] Optionally, a flow channel connecting the driving cavity and the sealed balance cavity is provided on the sealing gasket, and the flow channel forms the delay channel.

[0011] Optionally, the inner cavity of the valve core is provided with a piston elastically connected to the cavity wall, and the piston is sealed with the inner cavity of the valve core to define the sealed balance cavity.

[0012] Optionally, a mounting hole is provided at the end of one end of the valve core extending from the valve body, an adjusting block extending into the inner cavity of the valve core is installed at the mounting hole, and the depth of the adjusting block extending into the valve core can be adjusted, and the piston is elastically connected to the adjusting block.

[0013] Optionally, a water inlet and a water outlet are spaced apart on the side wall of the valve body to form a flow channel flowing through the valve body, and the valve core is located at the first position, and the first sealing portion seals at least one of the water inlet and the water outlet.

[0014] Optionally, a limit stop is provided at a position of the valve body between the water inlet and the water outlet, and the first sealing portion slides against the limit stop to define the first position.

[0015] Optionally, the limit stopper is detachable, and a supporting structure is provided between the valve body and a side of the limit stopper facing away from the first sealing portion.

[0016] Optionally, a through hole is provided at one end of the valve body, the size of the through hole is equal to or larger than the size of the first sealing portion, and a sealing ring is detachably provided at the through hole, and the sealing ring is sleeved on the valve core.

[0017] The present invention also proposes a water outlet device, wherein the water outlet device includes a delay valve, the delay valve includes a valve body, a cavity structure and a valve core, the valve body is provided with a flow channel; the cavity structure is located in the valve body, the cavity structure includes a drive cavity and a sealed balance cavity, a one-way flow channel and a delay channel are provided between the drive cavity and the sealed balance cavity, the flow direction of the one-way flow channel is from the drive cavity to the sealed balance cavity, the sealed balance cavity is configured to elastically deform its volume as the pressure in the inner cavity changes; a first sealing portion and a second sealing portion are provided on the valve core Sealing part, the valve core is movably provided on the valve body, and one end thereof extends from one end of the valve body, the first sealing part is sealed and slidably matched with the drive chamber, and the valve core has a first position and a second position on its movable stroke, when in the first position, the first sealing part seals the flow channel, and the volume of the sealing chamber defined by the second sealing part and the drive chamber is v1, when in the second position, the first sealing part opens the flow channel, and the volume of the sealing chamber defined by the second sealing part and the drive chamber is v2, and v1 is greater than v2.

[0018] In the technical solution of the present invention, by arranging the independently sealed self-circulating cavity structure in the valve body, the dependence on the water pressure of tap water is eliminated, and the self-control of the delay valve is achieved to ensure the stability of the use of the delay valve. Specifically, the driving chamber is provided at the bottom of the valve body, and the second sealing portion on the valve core and the bottom of the driving chamber define a sealing chamber. The above-mentioned sealing chamber and the sealed balance chamber are connected with the delay channel through the one-way flow channel to form an independently sealed self-circulating system. When the user presses the valve core, the valve core moves from the first position toward the second position, the overflow channel opens and discharges water normally, and the flow medium in the above-mentioned sealing chamber flows into the sealed balance chamber through the one-way flow channel. The sealed balance chamber is elastically deformed under pressure to accumulate elastic potential energy. At this time, the user lets go, and the valve core is no longer under pressure. The elastic potential energy accumulated in the sealed balance chamber is released, driving the sealed balance chamber to recover and squeeze the medium inside it to flow back into the above-mentioned sealing chamber through the delay channel, so as to push the valve core back to the first position, seal the overflow channel through the first sealing portion, and complete the closing of the delay valve. As mentioned above, the delay channel controls the flow rate of the medium at a smaller level, so that the medium flows slowly to achieve the delay function. The overall working process of the delay valve is realized by the internal circulation of the cavity structure, without the participation of tap water, so that the working process of the delay valve is not affected by the pressure fluctuation of tap water, and the dirt and impurities in the tap water will not enter the cavity structure, which reduces the impact of dirt accumulation on the service life of the delay valve. This meets the stable use requirements of the delay valve and improves the comfort of using the delay valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A three-dimensional schematic diagram of an embodiment of a time delay valve provided by the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the floor plan;

[0022] Figure 3 for Figure 1 Explosion diagram of

[0023] Figure 4 for Figure 1 Schematic diagram of the cross section at the middle support structure;

[0024] Figure 5 for Figure 1 A schematic cross-sectional view of the valve core in FIG.

[0025] Figure 6 for Figure 1 Explosion diagram of the valve core;

[0026] Figure 7 for Figure 1 A cross-sectional schematic diagram of the time delay valve in a closed state;

[0027] Figure 8 for Figure 1 A cross-sectional diagram of the time delay valve in a half-open state;

[0028] Figure 9 for Figure 1 Schematic cross-sectional view of the delay valve in the open state.

[0029] Description of Figure Numbers:

[0030] Label name Label name 1000 Delay valve 231 One-way valve structure 1 valve body 2311 sealing gasket 11 overflow channel 2312 Elastic structure 12 water inlet 24 Delay channel 13 water outlet 241 runner 14 Limit stop 3 valve core 15 Support structure 31 First sealing part 16 Via 32 Second sealing part 17 Sealing ring 321 Opening 2 Cavity structure 33 piston 21 Drive cavity 34 Mounting holes 22 Sealed balance chamber 35 Adjustment stop 23 One-way flow channel

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their 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 at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Existing time-delay valves generally connect the inner cavity of the valve body to the tap water pipe, and the pressure of the tap water entering the inner cavity pushes against the valve core to close the water outlet. Obviously, with this arrangement, the force applied by the user to press the valve core to open the water outlet is related to the water pressure of the tap water. When the tap water pressure is unstable, the operation of the time-delay valve is also unstable. In addition, dirt and sediment in the tap water may be retained in the valve body and accumulate over time, affecting the normal operation of the valve core and shortening its service life. Therefore, there is an urgent need for a self-controlled time-delay valve to break away from the current situation of relying on the water pressure of the tap water to achieve its function and solve the above-mentioned defects.

[0036] In view of this, the present invention provides a time delay valve. Figures 1 to 9 An embodiment of the time delay valve provided by the present invention will be described below with reference to specific drawings.

[0037] See also Figures 1 to 9The time delay valve 1000 includes a valve body 1, a cavity structure 2 and a valve core 3. The valve body 1 is provided with a flow channel 11; the cavity structure 2 is located in the valve body 1, and the cavity structure 2 includes a drive chamber 21 and a sealed balance chamber 22. A one-way flow channel 23 and a delay channel 24 are provided between the drive chamber 21 and the sealed balance chamber 22. The flow direction of the one-way flow channel 23 is from the drive chamber 21 to the sealed balance chamber 22. The sealed balance chamber 22 is configured to have a volume that elastically deforms as the internal cavity pressure changes; a first sealing portion 31 and a second sealing portion 32 are provided on the valve core 3. The valve core 3 is movably provided on the valve body 1, and one end thereof extends from one end of the valve body 1. The first sealing portion 31 is sealed and slidably fitted with the drive chamber 21. The valve core 3 has a first position and a second position in its movable stroke. In the first position, the first sealing portion 31 seals the flow channel 11, and the volume of the sealed chamber defined by the second sealing portion 32 and the drive chamber 21 is v1. In the second position, the first sealing portion 31 opens the flow channel 11, and the volume of the sealed chamber defined by the second sealing portion 32 and the drive chamber 21 is v2, and v1 is greater than v2.

[0038] In the technical solution of the present invention, by setting the independently sealed and self-circulating cavity structure 2 in the valve body 1, the dependence on the water pressure of tap water is eliminated, and the self-control of the delay valve 1000 is achieved to ensure the stability of the use of the delay valve 1000. Specifically, the valve body 1 is provided with a driving chamber 21 at the bottom, and the second sealing portion 32 on the valve core 3 and the bottom of the driving chamber 21 define a sealed chamber. The sealed chamber and the sealed balancing chamber 22 are connected to the delay channel 24 through the one-way flow channel 23 to form an independently sealed self-circulating system. When the user presses the valve core 3, the valve core 3 moves from the first position to the second position, the flow channel 11 is opened to discharge water normally, and the flowing medium in the sealed chamber flows into the sealed balancing chamber 22 through the one-way flow channel 23. The sealed balancing chamber 22 is elastically deformed under pressure and accumulates elastic potential energy. At this time, the user releases the valve core 3 and the valve core 3 is no longer pressurized. The elastic potential energy accumulated in the sealed balancing chamber 22 is released, driving the sealed balancing chamber 22 to recover, squeezing the medium therein to flow back into the sealed chamber through the delay channel 24, thereby pushing the valve core 3 back to the first position, sealing the flow channel 11 through the first sealing portion 31, and completing the closing of the delay valve 1000. As mentioned above, the delay channel 24 controls the flow rate of the medium at a relatively low level, so that the medium flows slowly to achieve the delay function. The overall working process of the delay valve 1000 is realized by the internal circulation of the cavity structure 2, without the participation of tap water, so that the working process of the delay valve 1000 is not affected by the pressure fluctuation of tap water, and the dirt and impurities in the tap water will not enter the cavity structure 2, which reduces the influence of dirt accumulation on the service life of the delay valve 1000, thereby meeting the stable use requirements of the delay valve 1000 and improving the comfort of use of the delay valve 1000.

[0039] Furthermore, the sealed balancing chamber 22 is provided in the inner cavity of the valve core 3, and is connected to the drive chamber 21 through an opening 321 located on the second sealing portion 32. A one-way valve structure 231 is provided at the opening 321 to form the one-way flow channel 23. The setting position of the sealed balancing chamber 22 does not need to be limited and can be adjusted according to actual product requirements, as long as its elastic deformation performance is guaranteed to achieve the above-mentioned function. In this embodiment, an inner cavity is opened in the valve core 3, and the sealed balancing chamber 22 is built into the valve core 3, so that the sealed balancing chamber 22 is integrated with the valve core 3, reducing the volume of the delay valve 1000. At the same time, an opening 321 is provided on the second sealing portion 32 to achieve communication between the sealed balancing chamber 22 and the drive chamber 21, and the structure is ingenious.

[0040] Specifically, the one-way valve structure 231 includes a sealing gasket 2311 disposed at the opening 321, and an elastic structure 2312 for resetting the sealing gasket 2311. The sealing gasket 2311 has a closed state for sealing the opening 321 and an open state for opening the opening 321. The elastic structure 2312 is used to maintain the closed state of the sealing gasket 2311. The opening 321 has a first side facing the sealed balancing chamber 22. The sealing gasket 2311 is disposed on the first side. The elastic structure 2312 is used to maintain the sealing gasket 2311 covering the opening 321 to achieve a seal. This arrangement does not require the sealing gasket 2311 to slide with the opening 321. The sealing gasket 2311 only has a sealed state for sealing against the opening 321 and an open state for sealing away from the opening 321. This ensures that the movement of the sealing gasket 2311 is not affected by any forces other than the pressure provided by the medium and the elastic force provided by the elastic structure 2312, resulting in simple force bearing and stable use. In addition, a detachable mounting structure is provided at the bottom of the second sealing portion 32, the opening 321 is provided on the mounting structure, the outer size of the mounting structure is set to be larger than the size of the sealing gasket 2311, and the size of the opening 321 on the mounting structure is set to be smaller than the size of the sealing gasket 2311. When installing the sealing gasket 2311, the elastic structure 2312 is preferably placed in the valve core 3. In this embodiment, the elastic structure 2312 is set as a spring, and then the sealing gasket 2311 is placed in the valve core 3, so that the elastic structure 2312 is One end of the structure 2312 abuts against the inner cavity wall of the valve core 3, and the other end abuts against the sealing gasket 2311. The mounting structure is then installed on the valve core 3 so that the mounting structure abuts against the sealing gasket 2311 inward and compresses the elastic structure 2312 to provide the elastic structure 2312 with a certain initial elastic force, so that the sealing gasket 2311 tightly covers the opening 321. In this way, the sealing gasket 2311, which is larger than the size of the opening 321, is installed on the first side of the opening 321, that is, installed inside the valve core 3.

[0041] Furthermore, the sealing gasket 2311 is provided with a flow channel 241 connecting the drive chamber 21 and the sealed balance chamber 22, and the flow channel 241 forms the delay channel 24. The position of the delay channel 24 also does not need to be limited, and it only needs to be able to connect the drive chamber 21 and the sealed balance chamber 22. In this embodiment, the flow channel 241 is provided on the sealing gasket 2311 to form the delay channel 24. Compared with directly forming the delay channel 24 on the valve core 3, that is, forming a through hole on the second sealing portion 32, on the one hand, it is more convenient to process the flow channel 241 on the sealing gasket 2311; on the other hand, the delay channel 24 is provided on the sealing gasket 2311, eliminating the need to reserve an opening area on the valve core 3 to avoid the sealing gasket 2311, thereby reducing the volume of the valve core 3. In addition, the sealing gasket 2311 and the delay channel 24 are integrated, resulting in an ingenious overall structure and strong practicality.

[0042] In addition, the inner cavity of the valve core 3 is provided with a piston 33 elastically connected to the cavity wall. The piston 33 is sealed with the inner cavity of the valve core 3 to define the sealed balance cavity 22 . The sealed balancing chamber 22 can be an elastic liquid bag structure arranged in the inner cavity of the valve core 3, which realizes the accumulation and release of elastic potential energy through the stretching and contraction of the bag wall, or an elastic extrusion structure can be arranged in the inner cavity of the valve core 3 to assist in applying elastic force to the liquid bag to realize the accumulation and release of elastic potential energy. In this way, the function of the sealed balancing chamber 22 can be realized, but it is obvious that the structure is more complicated and not convenient for installation and implementation. In this embodiment, the piston 33 is arranged in the inner cavity of the valve core 3, and the sealed balancing chamber 22 is defined by the piston 33 and the inner cavity wall of the valve core 3. At the same time, an elastic member is arranged on the side of the piston 33 away from the sealed balancing chamber 22 to support the cavity wall connecting the piston 33 and the inner cavity of the valve core 3, so that the elastic potential energy of the above-mentioned elastic member is accumulated and released during the moving stroke of the piston 33, thereby realizing balanced control of the pressure in the sealed balancing chamber 22 and meeting the use requirements.

[0043] Furthermore, a mounting hole 34 is provided at the end of the valve core 3 extending from the valve body 1, and an adjusting block 35 extending into the inner cavity of the valve core 3 is installed at the mounting hole 34, and the depth of the adjusting block 35 extending into the valve core 3 can be adjusted, and the piston 33 is elastically connected to the adjusting block 35. An adjusting block 35 is provided on the valve core 3, and the depth of the adjusting block 35 extending into the inner cavity of the valve core 3 is adjustable, and elastic contact is achieved by providing an elastic member between the adjusting block 35 and the piston 33. On the basis of a certain volume of the self-circulating medium in the cavity structure 2, the depth of the adjusting block 35 extending into the inner cavity of the valve core 3 is adjusted, and the compression degree of the elastic member can be adjusted to adjust the initial pressure in the sealed balance cavity 22. In this way, on the one hand, the force required for the user to press the valve core 3 when in use can be adjusted, thereby meeting the needs of different user groups and having greater applicability; on the other hand, it is convenient for the assembly of the delay valve 1000, and the assembly of the delay valve 1000 can be completed when the pressure in the sealed balance cavity 22 is relatively low, which is convenient for operation, and then the adjusting block 35 is adjusted during use to meet the normal use pressure requirements.

[0044] In addition, a water inlet 12 and a water outlet 13 are spaced apart on the side wall of the valve body 1 to form a flow passage 11 for flow through the valve body 1. When the valve core 3 is in the first position, the first sealing portion 31 seals at least one of the water inlet 12 and the water outlet 13. The flow passage 11 can be a flexible pipe disposed within the valve body 1, and the first sealing portion 31 squeezes the flexible pipe to achieve sealing of the flow passage 11. However, such a configuration requires a large number of parts, and the stability of the time delay valve 1000 during use is poor. In this embodiment, the water inlet 12 and the water outlet 13 are directly formed in the side wall of the valve body 1, and the water inlet 12 and the water outlet 13 are connected through the inner cavity of the valve body 1 to form the flow passage 11. The first sealing portion 31 blocks one of the water inlet 12 and the water outlet 13 to achieve sealing of the flow passage 11. The flow passage 11 is formed by utilizing the structure of the valve body 1, which reduces the number of parts and improves stability.

[0045] Furthermore, the valve body 1 is provided with a limit stopper 14 between the water inlet 12 and the water outlet 13, and the first sealing portion 31 slides against the limit stopper 14 to define the first position. The water inlet 12 and the water outlet 13 are spaced apart along the movable direction of the valve core 3, and the limit stopper 14 is provided between the water inlet 12 and the water outlet 13. The first sealing portion 31 tightly abuts against the limit stopper 14, thereby achieving a seal between the first sealing portion 31 and the drive chamber 21, thereby sealing the flow passage 11. With such an arrangement, on the one hand, there is no need to set the first sealing part 31 to a structure that completely blocks the water inlet 12 or the water outlet 13, and the structural design has a large degree of freedom; on the other hand, if the side of the first sealing part 31 completely blocks the water inlet 12 or the water outlet 13, its sealing pressure is only provided by the sealing ring between the valve body 1 and the side wall, and the sealing effect is unreliable. After long-term use, the sealing ring ages and leaks occur, resulting in a poor user experience; on the other hand, the holding force of the first sealing part 31 against the limit stopper 14 comes from the pressure in the drive chamber 21, that is, from the pressure in the sealing balance chamber 22. The adjustable pressure in the sealing balance chamber 22 has been described above. In this way, the force of the first sealing part 31 against the limit stopper 14 can be adjusted to meet the sealing requirements. At the same time, the first sealing part 31 can be fixed in the first position to prevent the valve core 3 from moving when the delay valve 1000 is not in use, and the stability is stronger.

[0046] Furthermore, the stopper 14 is detachable, and a support structure 15 is provided between the side of the stopper 14 facing away from the first sealing portion 31 and the valve body 1. To facilitate installation of the first sealing portion 31 into the drive chamber 21 over the stopper 14, the stopper 14 is configured as a detachable structure. Furthermore, to prevent the first sealing portion 31 from abutting against the stopper 14 and pushing the stopper 14 to move, thereby affecting the operating effect, the support structure 15 is provided on the side of the stopper 14 facing away from the first sealing portion 31. The support structure 15 is clamped between the valve body 1 and the stopper 14 to abut against the stopper 14 and prevent it from moving, thereby resolving the aforementioned problem. Specifically, an inwardly recessed step is provided within the valve body 1 corresponding to the position of the stopper 14 facing the first sealing portion 31. That is, the stopper 14 is clamped and fixed by the step and the support structure 15, providing strong stability.

[0047] In addition, a through-hole 16 is defined at one end of the valve body 1. The size of the through-hole 16 is equal to or larger than the size of the first sealing portion 31. A removable sealing collar 17 is provided at the through-hole 16 and is sleeved over the valve core 3. To facilitate installation of the valve core 3 into the valve body 1, the through-hole 16 is defined at one end of the valve body 1 and is configured to be larger than or equal to the size of the first sealing portion 31. The valve core 3 can be inserted into the valve body 1 through the through-hole 16 for installation, providing convenient operation. To ensure the sealing effect of the valve body 1, a removable sealing collar 17 is provided at the through-hole 16. The inner side of the sealing collar 17 sleeves over the valve core 3, while the outer side of the sealing collar 17 abuts against the wall of the through-hole 16. Sealing is achieved on both sides by sealing rings provided on the inner and outer sides of the sealing collar 17. Specifically, the valve core 3 can also be installed by pre-installing the limit stopper 14 and the sealing collar 17 on the valve core 3, that is, both are sleeved on the valve core 3, and the support structure 15 is arranged between the limit stopper 14 and the sealing collar 17 to complete the pre-installation of the valve core assembly. At this time, the valve core 3 assembly is placed into the valve body 1 and pressure is applied until the sealing collar 17 is in place and sealed, thus completing the assembly of the delay valve 1000. Specifically, in this embodiment, to facilitate the installation of the support structure 15, the support structure 15 is configured as a retaining spring that can be clamped onto the valve core 3 from one side of the valve core 3, thereby simplifying installation. The retaining spring is also provided with multiple notches to avoid obstruction of the flow passage 11.

[0048] The present invention further provides a water outlet device, comprising a time delay valve 1000. The specific structure of the time delay valve 1000 is described in detail in the above embodiments. Since the water outlet device utilizes all of the technical solutions of all of the above embodiments, it possesses at least all of the beneficial effects brought about by the technical solutions of the above embodiments, and therefore will not be further elaborated here.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A time delay valve, characterized in that: include: A valve body provided with a flow passage; a cavity structure located in the valve body, the cavity structure including a drive cavity and a sealed balancing cavity, a one-way flow channel and a delay channel being provided between the drive cavity and the sealed balancing cavity, the one-way flow channel flowing from the drive cavity to the sealed balancing cavity, the sealed balancing cavity being configured to elastically deform in volume as the internal cavity pressure changes; and a valve core having a first sealing portion and a second sealing portion provided thereon, the valve core being movably disposed on the valve body, with one end thereof extending from one end of the valve body, the first sealing portion sealingly and slidably engaging with the drive chamber, the valve core having a first position and a second position in its movable stroke, wherein in the first position, the first sealing portion seals the flow passage, and the volume of the sealed chamber defined by the second sealing portion and the drive chamber is v1; and in the second position, the first sealing portion opens the flow passage, and the volume of the sealed chamber defined by the second sealing portion and the drive chamber is v2, where v1 is greater than v2; The side wall of the valve body is provided with a water inlet and a water outlet at intervals to form a flow channel flowing through the valve body. When the valve core is located at the first position, the first sealing portion seals at least one of the water inlet and the water outlet. The overflow channel includes a flexible pipe arranged in the valve body, and the first sealing portion squeezes the flexible pipe to achieve sealing of the overflow channel.

2. The time delay valve according to claim 1, characterized in that: The sealed balancing chamber is arranged in the inner cavity of the valve core and is communicated with the driving chamber through an opening located on the second sealing portion. A one-way valve structure is arranged at the opening to form the one-way flow channel.

3. The time delay valve according to claim 2, characterized in that: The one-way valve structure includes a sealing gasket arranged at the opening and an elastic structure for resetting the sealing gasket. The sealing gasket has a closed state for sealing the opening and an open state for opening the opening. The elastic structure is used to maintain the closed state of the sealing gasket.

4. The time delay valve according to claim 3, characterized in that: The sealing gasket is provided with a flow channel communicating with the driving cavity and the sealing balance cavity, and the flow channel forms the delay channel.

5. The time delay valve according to claim 2, characterized in that: The inner cavity of the valve core is provided with a piston elastically connected to the cavity wall, and the piston is sealed with the inner cavity of the valve core to define the sealed balance cavity.

6. The time delay valve according to claim 5, characterized in that: The end of the valve core extending from the valve body is provided with a mounting hole, and an adjusting block extending into the inner cavity of the valve core is installed at the mounting hole, and the depth of the adjusting block extending into the valve core is adjustable, and the piston is elastically connected to the adjusting block.

7. The time delay valve according to claim 1, characterized in that: A limit stop is provided at a position of the valve body between the water inlet and the water outlet, and the first sealing portion slides against the limit stop to define the first position.

8. The time delay valve according to claim 7, characterized in that: The position-limiting stopper is detachably arranged, and a supporting structure is arranged between a side of the position-limiting stopper facing away from the first sealing portion and the valve body.

9. The time delay valve according to claim 1, characterized in that: A through hole is provided at one end of the valve body, the size of the through hole is equal to or larger than the size of the first sealing portion, and a sealing ring is detachably provided at the through hole, and the sealing ring is sleeved on the valve core.

10. A water outlet device, characterized in that: Comprising the delay valve according to any one of claims 1 to 9.

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