One-way check valve and water outlet valve group

Abstract

The present invention provides a one-way check valve and a water outlet valve group. The one-way check valve includes: a valve housing; a sealing seat, the sealing seat including a control through hole; a driving control member, the driving control member being operably connected to the valve housing and moving along the axial direction of the valve housing. The driving control member gradually approaches the sealing seat and successively defines a first closed position, a communication position, and a second closed position. When in the first closed position or the second closed position, the driving control member closes the control through hole, and when in the communication position, the control through hole is in communication. Applying this technical solution can provide a pressure-relieving one-way check valve and a water outlet valve group.

Description

Technical Field

[0001] The present invention relates to a one-way check valve and a water outlet valve group. Background Art

[0002] Most of the one-way check valves on the current market have both one-way valve function and check valve function. A small number of customers like to install, test and replace in the way of first closing the main valve core and then closing the two side check valves. However, when the customer first closes the main valve core, due to the anti-backflow function of the two side one-way valves, at this time, the main valve and the two side one-way check valves jointly form an outward closed cavity. When pressurizing this closed cavity to close the check valve, it is equivalent to compressing the liquid in the closed cavity, and it is extremely easy to damage the main valve. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a pressure-relieving one-way check valve and a water outlet valve group.

[0004] To solve the above technical problems, the present invention provides a one-way check valve, including:

[0005] A valve housing;

[0006] A sealing seat, the sealing seat includes a control through hole;

[0007] A drive control member, the drive control member is operably connected to the valve housing and moves along the axial direction of the valve housing. The drive control member gradually approaches the sealing seat and successively defines a first closed position, a communication position and a second closed position. When in the first closed position or the second closed position, the drive control member closes the control through hole. When in the communication position, the control through hole is communicated.

[0008] Preferably, the drive control member includes a drive seat and a control shaft rod. The control shaft rod is arranged on the drive seat. The drive seat is connected to the valve housing. The control shaft rod extends into the control through hole and controls the blocking or communication of the control through hole.

[0009] Preferably, a butt joint ring body extends radially inwards from the control through hole. The control shaft rod includes a closed section far from the drive seat and a communication section close to the drive seat. When the drive control member is in the first closed position, the butt joint ring body abuts against the closed section and blocks the control through hole. When the drive control member is in the communication position, the butt joint ring body is arranged corresponding to the communication section, and the control through hole is communicated.

[0010] Preferably, the radial dimension of the closed section is larger than the radial dimension of the communication section.

[0011] Preferably, the sealing seat includes a gasket facing the driving seat. When the driving control member is in the second closed position, the gasket abuts against the driving seat and surrounds and closes the control through-hole.

[0012] Preferably, the sealing seat includes a support base frame and a flexible gasket body. The flexible gasket body is arranged on the support base frame. The flexible gasket body defines the abutting ring body and the gasket. A water-stop gasket is further arranged on the side of the flexible gasket body away from the driving control member.

[0013] Preferably, the driving seat includes a first sealing ring facing the sealing seat. When the driving control member is in the second closed position, the first sealing ring abuts against the sealing seat and surrounds and closes the control through-hole.

[0014] Preferably, the sealing seat includes a support base frame, a water-stop gasket and a second sealing ring. The support base frame is provided with the control through-hole. The second sealing ring is arranged in the control through-hole and defines the abutting ring body. The water-stop gasket is arranged on the side of the support base frame away from the driving control member.

[0015] Preferably, an elastic member is further included. The elastic member abuts between the driving control member and the sealing seat. When the sealing seat approaches the driving control member, the elastic member accumulates elastic force.

[0016] The present invention further provides a water outlet valve group, including:

[0017] A pipeline, the pipeline includes a valve groove and two water inlet channels. Each water inlet channel includes a water inlet section and a water outlet section. The water outlet section communicates with the valve groove;

[0018] A valve assembly, arranged in the valve groove and communicating with the water outlet section;

[0019] Two of the one-way check valves are further included. The one-way check valves are arranged at the connection between the water inlet section and the water outlet section.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] During the use of the one-way check valve, the sealing seat and the driving control member are in the first closed position. At this time, the one-way check valve works normally. During the closing process of the one-way check valve, the sealing seat and the driving control member first change to the communicating position. At this time, the water pressures on both sides of the control through-hole of the sealing seat are balanced. Then, when in the second closed position, the control through-hole is closed to prevent the water flow on both sides of the control through-hole from affecting the cut-off effect; Description of the Drawings

[0022] Figure 1 It is a three-dimensional schematic diagram of the one-way check valve in the first embodiment of the present invention;

[0023] Figure 2 Schematic exploded perspective view of the one-way check valve in the first embodiment of the present invention;

[0024] Figure 3 Schematic cross-sectional view of the water outlet valve group in the first embodiment of the present invention;

[0025] Figure 4 Schematic cross-sectional view of the one-way check valve in the first embodiment of the present invention when the drive control member is in the first closed position;

[0026] Figure 5 Schematic cross-sectional view of the one-way check valve in the first embodiment of the present invention when the drive control member is in the communicating position;

[0027] Figure 6 Schematic cross-sectional view of the one-way check valve in the first embodiment of the present invention when the drive control member is in the second closed position;

[0028] Figure 7 Schematic exploded perspective view of the sealing seat in the first embodiment of the present invention;

[0029] Figure 8 Schematic cross-sectional view of the one-way check valve in the second embodiment of the present invention when the drive control member is in the first closed position. Detailed implementation manners

[0030] The following further describes the present invention in conjunction with the drawings and specific implementation manners.

[0031] Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "upper", "lower" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when normally viewing the drawings. Unless otherwise specified, the directional terms described in this specification are generally in the conventional directions understood by those skilled in the art.

[0032] The terms "first", "the first", "second", "the second" and their similar terms used in the present invention do not denote any order, quantity or importance in the present invention, but are used to distinguish one component from other components.

[0033] Refer to Figures 1-8, a water outlet valve group 100, which is usually used for a wall-mounted shower faucet. The water outlet valve group 100 includes a pipeline 1, which is buried in the wall. The pipeline 1 includes a valve groove 11 and two water inlet channels 12. Each water inlet channel 12 includes a water inlet section 121 and a water outlet section 122. The water outlet section 122 communicates with the valve groove 11, and the water inlet section 121 communicates with an external water source. One of the water inlet channels 12 communicates with hot water, and the other water inlet channel 12 communicates with cold water. The pipeline 1 further includes a water outlet channel 13 communicating with the valve groove 11. The pipeline 1 includes two such water outlet channels 13, and the water outlet channels 13 are respectively connected to a handheld shower head or a head shower head.

[0034] The water outlet valve group 100 further includes a valve assembly 2, which is arranged in the valve groove 11 and communicates with the water inlet channels 12 and the water outlet channels 13 respectively. The valve assembly 2 is configured to connect the hot water and cold water in the water inlet channels 12 and the water outlet channels 13 to form warm water, and the warm water is connected to one or both of the water outlet channels 13 through the valve assembly 2.

[0035] The water outlet valve group 100 further includes two one-way check valves 3. Each water inlet channel 12 is provided with one such one-way check valve 3. The one-way check valve 3 is arranged at the connection of the water inlet section 121 and the water outlet section 122. A valve cavity 14 is arranged at the connection of the water inlet section 121 and the water outlet section 122. The outlet of the water inlet section 121 is arranged on the bottom wall of the valve cavity 14, and the inlet of the water outlet section 122 is arranged on the side wall of the valve cavity 14. The one-way check valve 3 is arranged in the valve cavity 14.

[0036] The one-way check valve 3 includes a valve housing 31, a sealing seat 32 and a driving control member 33. A through installation groove 311 extends in the valve housing 31. An internal thread is arranged in the upper end of the valve housing 31 in the installation groove 311. An external thread is arranged at the lower end of the valve housing 31. An internal thread is arranged in the valve cavity 14, and the lower end of the valve housing 31 is screwed to the valve cavity 14.

[0037] The driving control member 33 is operably connected to the valve housing 31 and moves axially along the valve housing 31. The driving control member 33 includes a driving seat 331 and a control shaft rod 332. The outer peripheral wall of the driving seat 331 is provided with an external thread. The driving control member 33 is screwed into the installation groove 311. The upper end of the driving seat 331 is provided with a slotted cross recess. The installer can rotate the driving seat 331 with a slotted screwdriver. The control shaft rod 332 is connected to the lower end of the driving seat 331 and extends into the installation groove 311. The driving seat 331 moves axially on the valve housing 31 according to the thread and drives the control shaft rod 332 to move. The sealing seat 32 is slidably arranged in the installation groove 311. When the driving control member 33 moves and approaches the sealing seat 32, the sliding space of the sealing seat 32 is restricted. The sealing seat 32 includes a control through hole 321. When the driving control member 33 gradually approaches the sealing seat 32, it successively defines a first closed position, a communication position, and a second closed position. When in the first closed position or the second closed position, the driving control member 33 closes the control through hole 321. When in the communication position, the control through hole 321 is in communication.

[0038] The sealing seat 32 is used to abut and close the outlet of the water inlet section 121 and cut off the water inlet passage 12. The sealing seat 32 includes a water stop pad 323 on the side away from the driving control member 33. The water stop pad 323 is used to abut and close the outlet of the water inlet section 121.

[0039] During use, the valve assembly 2 controls the water flow in the water inlet passage 12 to form a water flow. When the driving member is in the first closed position, the control through hole 321 is closed. The water flows in from the outlet of the water inlet section 121. Under the action of the water pressure, the sealing seat 32 is pushed away from the outlet of the water inlet section 121, and then the water flows to the water outlet section 122.

[0040] When the valve assembly 2 of the water outlet valve group 100 is shut off, at this time, the sealing seat 32 is pressed against the outlet of the water inlet section 121 under the influence of the water pressure in the water outlet section 122. During the process that the driving control member 33 gradually approaches the sealing seat 32, the water in the water outlet section 122 is compressed, which may damage the valve assembly 2 accordingly. When the installer rotates the driving control member 33, the driving control member 33 gradually approaches the sealing seat 32. When approaching the communication position, the control through hole 321 is in communication. The water in the water inlet section 121 flows to the water outlet section 122 through the control through hole 321. At this time, the water pressure in the water outlet section 122 is relieved, which can prevent the valve assembly 2 from being damaged due to excessive water pressure in the water outlet section 122.

[0041] The installer continues to rotate the drive control member 33 until the drive seat 331 presses against the sealing seat 32. At this time, the sealing seat 32 is completely restricted from sliding by the drive seat 331 and the pipeline 1. At this time, the sealing seat 32 is in the second closed position, the control through hole 321 is closed, and the water flow between the water inlet section 121 and the water outlet section 122 is completely cut off.

[0042] In this embodiment, the control shaft rod 332 extends into the control through hole 321 and controls the blocking or communication of the control through hole 321. The control shaft rod 332 not only functions to control the blocking or communication of the control through hole 321, but also plays a guiding role for the sealing seat 32. In some simple replacements, the drive control member 33 may not be provided with the control shaft rod 332, as long as the process of the drive control member 33 gradually approaching the sealing seat 32 includes a first closed position, a communication position, and a second closed position.

[0043] A contact ring body 322 extends radially inward from the control through hole 321. The control shaft rod 332 includes a closed section 3321 away from the drive seat 331 and a communication section 3322 close to the drive seat 331. When the drive control member 33 is in the first closed position, the contact ring body 322 abuts against the closed section 3321 and blocks the control through hole 321. When the drive control member 33 is in the communication position, the contact ring body 322 is arranged corresponding to the communication section 3322, and the control through hole 321 is communicated. At this time, the water flow is communicated through the gap between the communication section 3322 and the control through hole 321. It should be noted that the first closed position, the second closed position, and the communication position represent the relative position relationship between the drive control member 33 and the sealing seat 32. The first closed position, the second closed position, and the communication position can represent exact position points, or can be represented as position intervals with a certain length, or a combination of the two. In this embodiment, the first closed position and the communication position are represented as position intervals with a certain length, and the second closed position is represented as an exact position point.

[0044] The one-way check valve 3 further includes an elastic member 34. The elastic member 34 abuts between the drive control member 33 and the sealing seat 32. When the sealing seat 32 approaches the drive control member 33, the elastic member 34 accumulates elastic force. In this embodiment, the elastic member 34 is a spring sleeved outside the control shaft rod 332. One end of the elastic member 34 abuts against the drive seat 331, and the other end abuts against the sealing seat 32. The elastic member 34 is used to push the sealing seat 32 to abut against the outlet of the water inlet section 121.

[0045] Refer to Figures 1-7, showing the first embodiment of the drive seat 331 and the seal seat 32. In this embodiment, the seal seat 32 includes a gasket 324 disposed toward the drive seat 331. When the drive control member 33 is in the second closed position, the gasket 324 abuts against the drive seat 331 and encloses the control through hole 321 therearound.

[0046] Specifically, the seal seat 32 includes a support base frame 325 and a flexible pad body 326. The support base frame 325 is made of a rigid material, such as plastic, etc., and the flexible pad body 326 is made of silicone material and has a certain amount of deformation. The support base frame 325 includes an outer ring wall 3251 and an inner ring wall 3252. The outer ring wall 3251 is disposed outside the inner ring wall 3252. The upper end of the inner ring wall 3252 is connected to the inner wall of the outer ring wall 3251 through a plurality of connecting walls 3253. The outer ring wall 3251 further includes a plurality of positioning grooves 3254 spaced apart.

[0047] The flexible pad body 326 defines the abutting ring body 322 and the gasket 324. On the side of the flexible pad body 326 away from the drive control member 33, it further defines the water stop pad 323. Specifically, the flexible pad body 326 includes two annular bodies 3261 spaced apart in parallel along the axis. The upper annular body 3261 defines the gasket 324, and the lower annular body 3261 defines the water stop pad 323. A plurality of positioning blocks 3262 are also connected between the two annular bodies 3261. When the flexible pad body 326 is connected to the support base frame 325, the two annular bodies 3261 are respectively embedded on the upper and lower sides of the outer ring wall 3251, and the positioning blocks 3262 are embedded in the positioning grooves 3254. The inner ring wall 3252 and the upper annular body 3261 also overlap to define the control through hole 321. The inner wall of the upper annular body 3261 further protrudes with the abutting ring body 322. The flexible pad body 326 and the support base frame 325 are connected by secondary injection molding, and the seal seat 32 is an integral body and is not easily separated.

[0048] A blocking ring 3323 is further provided at the end of the control shaft rod 332. The blocking ring 3323 is used to block the seal seat 32 from sliding out of the control shaft rod 332. A chamfered ring groove is provided at the lower end of the inner ring wall 3252, and the blocking ring 3323 abuts against this chamfered ring groove.

[0049] In this embodiment, two openings 3325 are circumferentially spaced apart on the control shaft rod 332. These two openings 3325 define the communication section 3322. When the abutting ring body 322 is disposed corresponding to this opening 3325, water flows through this opening 3325 in the control through hole 321.

[0050] During the installation process, the drive control member 33 is screwed to the valve housing 31. The control shaft rod 332 extends into the installation groove 311. The elastic member 34 is sleeved outside the control shaft rod 332. The control shaft rod 332 then passes through the control through hole 321 from top to bottom, and the blocking ring 3323 is sleeved on the end of the control shaft rod 332.

[0051] The one-way check valve 3 is screwed to the valve cavity 14 of the pipeline 1 through the external thread of the valve housing 31. At this time, the sealing seat 32 can slide on the control shaft rod 332. When the water flow does not pass through the water inlet channel 12, the sealing seat 32 abuts against the outlet of the water inlet section 121. When the water flow passes through the water inlet channel 12, the water pressure pushes the sealing seat 32 to release the closure of the outlet of the water inlet section 121. When the water in the water outlet section 122 flows backward, the water pressure will also push the sealing seat 32 to abut against the outlet of the water inlet section 121 to achieve the function of one-way cut-off.

[0052] When the sealing seat 32 abuts against the outlet of the water inlet section 121, the drive control member 33 rotates and gradually approaches the sealing seat 32 along the axis. When the drive control member 33 is at the uppermost end, at this time, the drive control member 33 and the sealing seat 32 are in the first closed position. The closed section 3321 of the control shaft rod 332 is arranged corresponding to the abutting ring body 322 of the sealing seat 32. When the drive control member 33 gradually approaches and makes the communication section 3322 of the control shaft rod 332 arranged corresponding to the abutting ring body 322 of the sealing seat 32, at this time, the drive control member 33 and the sealing seat 32 are in the communication position. When the drive seat 331 abuts against the sealing seat 32, at this time, the sealing gasket 324 abuts against the drive seat 331, and the drive control member 33 and the sealing seat 32 are in the second closed position.

[0053] During the actual use process, when the water outlet valve group 100 first closes the valve assembly 2 and one of the one-way check valves 3, when the other one-way check valve 3 is closed, the water in the water outlet section 122 and the valve assembly 2 will be compressed, resulting in a rapid increase in water pressure. During the closing process, the drive control member 33 of the one-way check valve 3 and the sealing seat 32 are changed from the first closed position to the communication position, and the water pressure in the water outlet section 122 is relieved to prevent damage to the valve assembly 2. Then, when in the second closed position, it can prevent the water in the water inlet section 121 from flowing into the water outlet section 122 through the control through hole 321, achieving the effect of completely stopping the water.

[0054] Refer to Figure 8, showing a second embodiment of the drive seat 331 and the seal seat 32. In this embodiment, the drive seat 331 includes a first sealing ring 3311 facing the seal seat 32. When the drive control member 33 is in the second closed position, the first sealing ring 3311 abuts against the seal seat 32 and surrounds and closes the control through-hole 321.

[0055] The seal seat 32 includes a support base frame 325, a second sealing ring 327, and the water stop pad 323. The support base frame 325, the second sealing ring 327, and the water stop pad 323 are separately provided. The support base frame 325 has a cylindrical structure. The control through-hole 321 is opened on the support base frame 325. An embedding groove is provided along the circumferential direction in the control through-hole 321. The second sealing ring 327 is arranged in the embedding groove. The second sealing ring 327 partially extends into the control through-hole 321 and defines the abutting ring body 322. The water stop pad 323 has an annular structure. The water stop pad 323 is hoop-mounted on the lower end of the support base frame 325, that is, on the end away from the drive control member 33.

[0056] In this embodiment, a blocking ring 3324 is provided at the end of the control shaft rod 332 with an enlarged diameter. The blocking ring 3324 abuts against the lower end of the support base frame 325. The blocking ring 3324 can prevent the support base frame 325 from leaving the control shaft rod 332. The control shaft rod 332 passes through the control through-hole 321 from bottom to top and is threadedly connected to the drive seat 331.

[0057] In this embodiment, the radial dimension of the closed section 3321 is larger than the radial dimension of the communication section 3322. When the abutting ring body 322 is arranged corresponding to the communication section 3322, water flows through the gap between the communication section 3322 and the control through-hole 321 in the control through-hole 321.

[0058] During the installation process, the control shaft rod 332 passes through the control through-hole 321 from bottom to top. The elastic member 34 is sleeved outside the control shaft rod 332. The control shaft rod 332 is then screwed to the drive seat 331. The drive seat 331 is screwed to the valve housing 31 through external threads.

[0059] The one-way check valve 3 is screwed onto the valve cavity 14 of the pipeline 1 through the external thread of the valve housing 31. At this time, the sealing seat 32 can slide on the control shaft rod 332. When water does not pass through the water inlet passage 12, the sealing seat 32 abuts against the outlet of the water inlet section 121. When water passes through the water inlet passage 12, the water pressure pushes the sealing seat 32 to release the closure of the outlet of the water inlet section 121. When the water in the water outlet section 122 flows backward, the water pressure also pushes the sealing seat 32 to abut against the outlet of the water inlet section 121 to achieve the function of one-way cut-off. The use process of the one-way check valve 3 in this embodiment is the same as that in the first embodiment, and will not be described in detail here.

[0060] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, making non-substantive changes to the present invention using this concept, shall fall within the scope of infringement of the protection of the present invention.

Claims

1. A one-way check valve, characterized in that, comprising: a valve housing; a sealing seat, the sealing seat including a control through hole; a driving control member, the driving control member being operably connected to the valve housing and moving along the axial direction of the valve housing, the driving control member gradually approaching the sealing seat and successively defining a first closed position, a communication position and a second closed position, when in the first closed position or the second closed position, the driving control member closes the control through hole, and when in the communication position, the control through hole is communicated; the driving control member includes a driving seat and a control shaft rod, a butt ring body radially extends inwards from the control through hole, the control shaft rod includes a closed section away from the driving seat and a communication section close to the driving seat, when the driving control member is in the first closed position, the butt ring body abuts against the closed section and blocks the control through hole, and when the driving control member is in the communication position, the butt ring body is arranged corresponding to the communication section, and the control through hole is communicated.

2. The one-way check valve according to claim 1, characterized in that: the control shaft rod is arranged on the driving seat, the driving seat is connected to the valve housing, and the control shaft rod extends into the control through hole and controls to block or communicate the control through hole.

3. The one-way check valve according to claim 1, characterized in that: the radial dimension of the closed section is larger than the radial dimension of the communication section.

4. The one-way check valve according to claim 1, characterized in that: the sealing seat includes a sealing pad arranged towards the driving seat, when the driving control member is in the second closed position, the sealing pad abuts against the driving seat and encloses and blocks the control through hole.

5. The one-way check valve according to claim 4, characterized in that: the sealing seat includes a support base frame and a flexible pad body, the flexible pad body is arranged on the support base frame, the flexible pad body defines the butt ring body and the sealing pad, and a water stop pad is further arranged on one side of the flexible pad body away from the driving control member.

6. The one-way check valve according to claim 1, characterized in that: the driving seat includes a first sealing ring arranged towards the sealing seat, when the driving control member is in the second closed position, the first sealing ring abuts against the sealing seat and encloses and blocks the control through hole.

7. The one-way check valve according to claim 6, characterized in that: the sealing seat includes a support base frame, a water stop pad and a second sealing ring, the support base frame is provided with the control through hole, the second sealing ring is arranged in the control through hole and defines the butt ring body, and the water stop pad is arranged on one side of the support base frame away from the driving control member.

8. The one-way check valve according to any one of claims 1-7, characterized in that: further comprising an elastic member, the elastic member abuts between the driving control member and the sealing seat, and when the sealing seat approaches the driving control member, the elastic member stores elastic force.

9. An outlet valve group, comprising: a pipeline, the pipeline including a valve groove and two water inlet channels, each water inlet channel including a water inlet section and a water outlet section, and the water outlet section is communicated to the valve groove; The valve assembly is arranged in the valve groove and communicates with the water outlet section; It is characterized in that: it further includes two one-way check valves as described in any one of claims 1-8, and the one-way check valve is arranged at the connection of the water inlet section and the water outlet section.

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