A water stop self-closing filter valve

Abstract

The utility model discloses a kind of water stop self-closing filter valve, including first valve body and second valve body, the first valve body and second valve body are connected in series;Water stop valve and axial adjusting member for controlling water stop valve on-off state are installed in the first valve body;Filter screen is provided in the lower part of axial adjusting member, and the lower end of filter screen is abutted at the outlet of water stop valve;Guide rod is slidably connected in the axial adjusting member, discharge channel is formed in the guide rod, and the side of guide rod has lateral communication hole;Second valve body has check valve and sliding plug in it;Sliding plug has water stop position and water passing position;First spring is set on sliding plug for sliding plug is pushed from water passing position to water stop position;When sliding plug is located in water passing position, sliding plug is kept in water passing position under the action of water pressure;After water stop, sliding plug moves from water passing position to water stop position and blocks the inlet of check valve.

Description

Technical Field

[0001] This utility model relates to the field of water valves, specifically to a self-closing filter water valve that shuts off when the water supply stops. Background Technology

[0002] Water valves are common household components that connect or disconnect water flow. However, current water valves have the following drawbacks: 1. When the water supply is interrupted, the water valve will remain in the open state as before the water supply was interrupted. If the faucet is left on during the water outage, it may cause flooding of the room after the water supply is restored.

[0003] Second, existing water valves with filters require the entire inner core to be removed in order to clean the mud and scale, which is quite troublesome.

[0004] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0005] The main purpose of this utility model is to provide a self-closing filter water valve that can shut off the water circuit after a water outage. After the water supply is restored, the user needs to operate it to open and restore the water supply. It also makes cleaning scale and sediment easier.

[0006] To achieve the above objectives, the solution of this utility model is: A self-closing filter water valve for water outage includes a first valve body and a second valve body, which are connected in series. A stop valve and an axial adjustment component for controlling the on / off state of the stop valve are installed in the first valve body. A filter screen is provided at the lower part of the axial adjustment component, and the lower end of the filter screen abuts against the outlet of the stop valve. An outlet rod is slidably connected within the axial adjusting component. A discharge channel is formed within the outlet rod, and a lateral communication hole is located on the side of the outlet rod. A water-stop ring is provided at one end of the outlet rod inside the filter screen. The diameter of the water-stop ring is smaller than the inner diameter of the filter screen. The outlet rod has a blocking position and a slag discharge position. When the outlet rod is in the blocking position, the water-stop ring blocks the inner cavity of the filter screen from the lateral communication hole. When the outlet rod is in the slag discharge position, the water-stop ring separates from the axial adjusting component and connects the inner cavity of the filter screen to the lateral communication hole. The second valve body has a one-way valve and a sliding plug; the sliding plug has a water-stopping position and a water-flowing position; a first spring is sleeved on the sliding plug to push the sliding plug from the water-flowing position to the water-stopping position; when the sliding plug is in the water-flowing position, the sliding plug is held in the water-flowing position under the action of water pressure; after the water is stopped, the sliding plug moves from the water-flowing position to the water-stopping position and blocks the inlet of the one-way valve.

[0007] Furthermore, the inlet of the first valve body is a threaded interface, and the outlet of the second valve body is a threaded interface.

[0008] Furthermore, the axial adjustment element is threadedly connected inside the housing of the first valve body.

[0009] Furthermore, the outlet of the second valve body is integrally connected to a water front-end device, which is a water meter or a pre-filter.

[0010] Furthermore, the guide rod also has an impact water flow net located inside the filter screen, the side wall of the impact water flow net has a plurality of jet holes, one end of the impact water flow net also has a support cylinder, the side of the support cylinder has a side water outlet; the support cylinder extends into the outlet of the stop valve.

[0011] Furthermore, a sealing gasket is provided at the end of the impact water flow net on the outer periphery of the support cylinder; when the guide rod is in the slag discharge position, the sealing gasket abuts against the outlet of the stop valve to seal.

[0012] Furthermore, a first bearing is provided between the impact water flow net and the discharge rod, and a second bearing is provided at the end of the impact water flow net on the outer periphery of the support cylinder; when the discharge rod is in the slag discharge position, the second bearing abuts against the outlet end of the stop valve; a swirl vane is formed inside the support cylinder; under the drive of the water flow, the impact water flow net rotates relative to the filter screen.

[0013] Furthermore, the sliding plug is slidably connected to the valve core seat, and the valve core seat is fixedly connected to the second valve body.

[0014] Furthermore, the valve core seat is connected to the one-way valve, and a lateral water passage is formed on the valve core seat. The lateral water passage is located between the end of the sliding plug in the water-stop position and the end of the sliding plug in the water-passing position.

[0015] Furthermore, the valve core seat and the one-way valve are separately configured, and the valve core seat and the one-way valve are respectively fixedly connected to the inner wall of the mounting cavity of the second valve body.

[0016] With the above structure, the self-closing filter water valve that shuts off when the water supply is interrupted, as disclosed in this utility model, has at least the following beneficial effects: When scale and other impurities accumulate inside the filter screen, pressing the discharge rod opens the discharge channel within the rod, which connects to the inner cavity of the filter screen through a lateral connecting hole, allowing the scale and impurities to be discharged with the water flow. Releasing the discharge rod then returns it to its sealed position, sealing the filter screen's inner cavity with the lateral connecting hole.

[0017] When the water supply is interrupted, the first spring pushes the sliding plug against the one-way valve, sealing the valve's inlet. After water supply is restored, the sliding plug remains in the sealed position under water pressure. The one-way valve prevents backflow from lifting the sliding plug. Water supply can only be restored normally if the user manually lifts the sliding plug, returning it to the water-allowing position and maintaining it there. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural schematic diagram of the first embodiment of a self-closing filter water valve that shuts off when the water supply is interrupted.

[0019] Figure 2 This is a cross-sectional view of the self-closing filter water valve according to the second embodiment.

[0020] Figure 3 This is an exploded view of the self-closing filter water valve in the second embodiment.

[0021] Figure 4 This is a schematic diagram of the dissected structure of the self-closing filter valve in the second embodiment.

[0022] Figure 5 This is a cross-sectional view of the self-closing filter water valve according to the third embodiment.

[0023] Figure 6 This is an exploded structural diagram of the self-closing filter water valve in the third embodiment.

[0024] Figure 7 This is a schematic diagram of the dissected structure of the self-closing filter water valve in the third embodiment.

[0025] Figure 8 This is a three-dimensional structural diagram of a check valve, valve core seat, and sliding plug.

[0026] In the picture: 1. First valve body; 2. Stop valve; 3. Axial adjusting component; 31. Filter screen; 4. Outlet rod; 41. Discharge channel; 42. Lateral connecting hole; 43. Stop ring; 44. Second spring; 45. Impact water flow net; 45. Support cylinder; 451. Side water outlet; 452. Sealing gasket; 453. First bearing; 454. Second bearing; 455. Swirl blade; 456. Cap body; 46. Discharge port; 461. Second valve body 5; one-way valve 6; sliding plug 71; first spring 72; valve core seat 73; lateral water passage 74. Detailed Implementation

[0027] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0028] like Figures 1 to 8As shown, this utility model relates to a self-closing filter water valve that shuts off when the water supply is interrupted. It includes a first valve body 1 and a second valve body 5, which are connected in series. A stop valve 2 and an axial adjustment member 3 for controlling the on / off state of the stop valve 2 are installed inside the first valve body 1. A filter screen 31 is provided at the lower part of the axial adjustment member 3, and the lower end of the filter screen 31 abuts against the outlet of the stop valve 2. An outlet rod 4 is slidably connected inside the axial adjusting member 3. A discharge channel 41 is formed inside the outlet rod 4, and a lateral communication hole 42 is provided on the side of the outlet rod 4. A water-stop ring 43 is provided at one end of the outlet rod 4 inside the filter screen 31. The diameter of the water-stop ring 43 is smaller than the inner diameter of the filter screen 31. The outlet rod 4 has a blocking position and a slag discharge position. When the outlet rod 4 is in the blocking position, the water-stop ring 43 blocks the inner cavity of the filter screen 31 from the lateral communication hole 42. When the outlet rod 4 is in the slag discharge position, the water-stop ring 43 is separated from the axial adjusting member 3 and connects the inner cavity of the filter screen 31 with the lateral communication hole 42. The second valve body 5 contains a one-way valve 6 and a sliding plug 71; the sliding plug 71 has a water-stopping position and a water-flowing position; a first spring 72 is sleeved on the sliding plug 71 to push the sliding plug 71 from the water-flowing position to the water-stopping position; when the sliding plug 71 is in the water-flowing position, the sliding plug 71 is held in the water-flowing position under the action of water pressure; after the water is stopped, the sliding plug 71 moves from the water-flowing position to the water-stopping position and blocks the inlet of the one-way valve 6.

[0029] This utility model relates to a self-closing filter valve that shuts off when water supply is interrupted. When scale and other impurities accumulate in the filter screen 31, pressing the guide rod 4 causes the discharge channel 41 within the guide rod 4 to connect with the inner cavity of the filter screen 31 through the lateral connecting hole 42, allowing the scale and impurities to be discharged with the water flow. Afterwards, releasing the guide rod 4 allows it to return to its sealed position under water pressure, sealing the inner cavity of the filter screen 31 with the lateral connecting hole 42. The guide rod 4 has a cap 46 at its top, and the side of the cap 46 has a discharge port 461 that communicates with the discharge channel 41.

[0030] When the water supply is interrupted, the first spring 72 pushes the sliding plug 71 against the one-way valve 6, sealing the inlet of the one-way valve 6. After the water supply is restored, the sliding plug 71 remains in the sealed position under water pressure, preventing flooding. The one-way valve 6 prevents water from flowing back and lifting the sliding plug 71. The water supply can only be restored normally if the user manually lifts the sliding plug 71 to return it to the water-flow position and holds it there.

[0031] Preferably, a second spring 44 is sleeved around the outer periphery of the guide rod 4, and the second spring 44 pushes the guide rod 4 inward. When the guide rod 4 is in the blocked position, under the action of water pressure, the guide rod 4 overcomes the elastic force of the second spring 44 and remains in the blocked position. After the water supply is stopped, the guide rod 4 will also fall down, indicating the current water supply status in the first valve body. After the water supply is restored, the water pressure impacting the end of the guide rod 4 from bottom to top will push the guide rod 4 up to return it to the blocked position.

[0032] Preferably, the inlet of the first valve body 1 is a threaded interface, and the outlet of the second valve body 5 is a threaded interface. The inlet and outlet can also be heat-fused interfaces.

[0033] Preferably, the axial adjusting member 3 is threadedly connected inside the outer shell of the first valve body 1. The threaded connection between the axial adjusting member 3 and the outer shell of the first valve body 1 allows the axial adjusting member 3 to move axially in a spiral motion by rotating it. The filter screen 31 abuts against the inner core of the stop valve 2, and the inner core of the stop valve 2 moves axially with the axial movement of the axial adjusting member 3, thus switching the stop valve 2 inside the first valve body 1 between water flow and closure. When the axial adjusting member 3 is unscrewed from the first valve body 1, the stop valve 2 automatically stops the water flow.

[0034] Preferably, the outlet of the second valve body 5 is integrally connected to a water circuit front-end device, which is a water meter or a pre-filter. Water flowing through the first valve body 1 is filtered, reducing the impact of solid impurities in the water on the water circuit front-end device and helping to extend its service life.

[0035] Preferably, such as Figures 2 to 4 As shown, the guide rod 4 also has an impact water flow net 45 located inside the filter screen 31. The sidewall of the impact water flow net 45 has several jet holes, and one end of the impact water flow net 45 has a support cylinder 451 with a side outlet 452. The support cylinder 451 extends into the outlet of the stop valve 2. When the guide rod 4 is pressed from the sealing position to the slag discharge position, water enters the impact water flow net 45 to form a jet. This jet impacts the inner cavity of the filter screen 31, allowing for more thorough cleaning of solid impurities such as scale and silt, which then flow out with the water. Furthermore, a sealing gasket 453 is provided at the end of the impact water flow net 45 on the outer periphery of the support cylinder 451. When the guide rod 4 is in the slag discharge position, the sealing gasket 453 abuts against the outlet of the stop valve 2 for sealing. Due to the sealing effect of the sealing gasket 453, the impact force of the jet formed by the water flow is stronger.

[0036] Preferably, such as Figures 5 to 7As shown, a first bearing 454 is provided between the impact water flow net 45 and the outlet rod 4, and a second bearing 455 (plane bearing) is provided at the end of the impact water flow net 45 on the outer periphery of the support cylinder 451. When the outlet rod 4 is in the slag discharge position, the second bearing 455 abuts against the outlet end of the stop valve 2. A swirl vane 456 is formed inside the support cylinder 451. Driven by the water flow, the impact water flow net 45 rotates relative to the filter screen 31. When the water flows through the swirl vane 456 inside the support cylinder 451, it drives the support cylinder 451 and the impact water flow net 45 to rotate. The resulting jet also rotates with the impact water flow net 45, and can impact the inner wall of the filter screen 31 360 degrees.

[0037] Preferably, the sliding plug 71 is slidably connected to the valve core seat 73, and the valve core seat 73 is fixedly connected to the second valve body 5. The valve core seat 73 is threaded onto the second valve body 5, facilitating the installation of the sliding plug 71.

[0038] Preferably, such as Figures 1-4 and Figure 8 As shown, the valve core seat 73 is connected to the one-way valve 6. A lateral water passage 74 is formed on the valve core seat 73, which is located between the end of the sliding plug in the water-stop position and the end of the sliding plug in the water-flow position. Water flowing in from the inlet of the second valve body 5 enters through the lateral water passage 74 between the ends of the sliding plug in the water-stop position and the end of the sliding plug in the water-flow position, thus enabling the sliding plug 71 to be held in either the water-stop position or the water-flow position under water pressure.

[0039] Preferably, such as Figures 5 to 7 As shown, the valve core seat 73 and the one-way valve 6 are separately configured, and the valve core seat 73 and the one-way valve 6 are respectively fixedly connected to the inner wall of the mounting cavity of the second valve body. The water flowing in from the inlet of the second valve body 5 enters between the end of the sliding plug in the water-stop position and the end of the sliding plug in the water-flow position. In the water-stop position, the plug body abuts and seals against the inlet of the one-way valve 6.

[0040] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A self-closing filter water valve for water outages, characterized in that, It includes a first valve body and a second valve body, which are connected in series; a stop valve and an axial adjustment component for controlling the on / off state of the stop valve are installed in the first valve body; a filter screen is provided at the lower part of the axial adjustment component, and the lower end of the filter screen abuts against the outlet of the stop valve. An outlet rod is slidably connected within the axial adjusting component. A discharge channel is formed within the outlet rod, and a lateral communication hole is located on the side of the outlet rod. A water-stop ring is provided at one end of the outlet rod inside the filter screen. The diameter of the water-stop ring is smaller than the inner diameter of the filter screen. The outlet rod has a blocking position and a slag discharge position. When the outlet rod is in the blocking position, the water-stop ring blocks the inner cavity of the filter screen from the lateral communication hole. When the outlet rod is in the slag discharge position, the water-stop ring separates from the axial adjusting component and connects the inner cavity of the filter screen to the lateral communication hole. The second valve body has a one-way valve and a sliding plug; the sliding plug has a water-stopping position and a water-flowing position; a first spring is sleeved on the sliding plug to push the sliding plug from the water-flowing position to the water-stopping position; when the sliding plug is in the water-flowing position, the sliding plug is held in the water-flowing position under the action of water pressure; after the water is stopped, the sliding plug moves from the water-flowing position to the water-stopping position and blocks the inlet of the one-way valve.

2. The self-closing filter water valve as described in claim 1, characterized in that, The inlet of the first valve body is a threaded interface, and the outlet of the second valve body is a threaded interface.

3. The self-closing filter water valve as described in claim 1, characterized in that, The axial adjustment component is threaded into the housing of the first valve body.

4. The self-closing filter water valve as described in claim 3, characterized in that, The outlet of the second valve body is integrally connected to a water front-end device, which is a water meter or a pre-filter.

5. The self-closing filter water valve as described in claim 1, characterized in that, The guide rod also has an impact water flow net located inside the filter screen. The side wall of the impact water flow net has a plurality of jet holes. One end of the impact water flow net also has a support cylinder. The side of the support cylinder has a side water outlet. The support cylinder extends into the outlet of the stop valve.

6. A self-closing filter water valve as described in claim 5, characterized in that, A sealing gasket is provided at the end of the impact water flow net on the outer periphery of the support cylinder; when the guide rod is in the slag discharge position, the sealing gasket abuts against the outlet of the stop valve to seal.

7. A self-closing filter water valve as described in claim 5, characterized in that, A first bearing is provided between the impact water flow net and the discharge rod, and a second bearing is provided at the end of the impact water flow net on the outer periphery of the support cylinder; when the discharge rod is in the slag discharge position, the second bearing abuts against the outlet end of the stop valve; a swirl vane is formed inside the support cylinder; under the drive of the water flow, the impact water flow net rotates relative to the filter screen.

8. The self-closing filter water valve as described in claim 1, characterized in that, The sliding plug is slidably connected to the valve core seat, and the valve core seat is fixedly connected to the second valve body.

9. A self-closing filter water valve as described in claim 8, characterized in that, The valve core seat is connected to the one-way valve, and a lateral water passage is formed on the valve core seat. The lateral water passage is located between the end of the sliding plug in the water-stop position and the end of the sliding plug in the water-passing position.

10. A self-closing filter water valve as described in claim 8, characterized in that, The valve core seat and the one-way valve are separately configured, and the valve core seat and the one-way valve are respectively fixedly connected to the inner wall of the mounting cavity of the second valve body.

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