A water stop self-closing valve and pipeline structure

Abstract

The utility model discloses a kind of water stop self-closing valve and pipeline structure, including outer shell and valve core assembly;Outer shell has installation cavity, water inlet and water outlet;Valve core assembly includes check valve and sliding plug;The outlet of check valve is communicated with water outlet;Sliding plug has plug rod and plug body in installation cavity, sliding plug has water stop position and water passing position;First spring for sliding plug is switched from water passing position to water stop position by toping on plug rod;When sliding plug is located in water passing position, plug body is in the upper portion of installation cavity;When sliding plug is located in water stop position, plug body is blocked in the flow passage direction of the inlet of check valve;When water stops, due to water pressure loss, sliding plug is switched from water passing position to water stop position to block the flow passage to check valve.After water supply is restored, it will be kept in water stop position.User manually pulls up sliding plug, and sliding plug is switched to water passing position to restore water supply, at this time, water pressure presses sliding plug to water passing position, so it will be kept in water passing position.

Description

Technical Field

[0001] This utility model relates to the field of water valves, specifically to a self-closing valve for water outages and its pipeline structure. Background Technology

[0002] In daily life, after a water outage, people often turn on the tap to check the water supply status but forget to turn it off again. This can easily lead to wasted water or flooding when the water supply is restored.

[0003] 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. Utility Model Content

[0004] The main objective of this invention is to provide a self-closing valve and pipeline structure that automatically closes after a water outage and remains closed when water is restored, until the user opens it to resume water supply. This effectively prevents flooding accidents when water supply is restored after a water outage.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A self-closing valve for water outages includes a housing and a valve core assembly. The housing has a mounting cavity, an inlet, and an outlet. The valve core assembly includes a one-way valve and a sliding plug. The one-way valve is installed in the mounting cavity. The outlet of the one-way valve communicates with the outlet. The sliding plug has a plug rod and a plug body located in the mounting cavity. The sliding plug has a water-stopping position and a water-flowing position. A first spring is sleeved on the plug rod 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 plug body is held in the upper part of the mounting cavity under water pressure. When the sliding plug is in the water-stopping position, the plug body is located in the lower part of the mounting cavity and blocks the flow channel in the inlet direction of the one-way valve. The water passage between the inlet and the mounting cavity is located between the sliding plug in the water-stopping position and the plug body in the water-flowing position.

[0007] Furthermore, the valve core assembly also includes a valve core seat, the sliding plug is slidably connected to the valve core seat, and the two ends of the first spring abut against the valve core seat and the sliding plug respectively; the valve core seat is fixedly connected to the inner wall of the mounting cavity.

[0008] Furthermore, a seal is provided at the upper end of the first spring, the plug rod passes through the seal, and the upper end of the first spring is engaged in the groove of the seal.

[0009] 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 sliding plug in the water-stop position and the plug body in the water-passing position. When the sliding plug is in the water-stop position, the plug body abuts and seals against the inlet of the one-way valve.

[0010] 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; when the sliding plug is in the water-stopping position, the plug body abuts and seals against the inlet of the one-way valve.

[0011] Furthermore, the valve core seat is threadedly connected to the inner wall of the mounting cavity, and a first sealing ring is provided between the valve core seat and the inner wall of the mounting cavity.

[0012] Furthermore, both the inlet and outlet are threaded connections or heat-fused connections.

[0013] Furthermore, a handle is provided at the outer end of the stopper rod.

[0014] A pipeline structure includes the aforementioned automatic shut-off valve and a water circuit front-end device; the water circuit front-end device is integrally connected to the outer shell of the automatic shut-off valve; the water circuit front-end device is connected to the inlet side of the outer shell, or the water circuit front-end device is connected to the outlet side of the outer shell.

[0015] Furthermore, the water supply front-end device is a water meter or a pre-filter.

[0016] With the above structure, the water shut-off valve and pipeline structure of this utility model have at least the following beneficial effects:

[0017] 1. During a water outage, due to the loss of water pressure, the sliding plug, under the action of the first spring, switches from the water-flow position to the water-stop position, blocking the flow path to the one-way valve. After water supply is restored, the water pressure also pushes the sliding plug towards the water-stop position, thus maintaining it in the water-stop position to prevent flooding. To restore water supply, the user manually pulls up the sliding plug, switching it to the water-flow position. At this time, the water pressure pushes the sliding plug towards the water-flow position, thus maintaining it in the water-flow position.

[0018] Second, this automatic shut-off valve can also be used to shut off water in an emergency. For example, if a faucet bursts, the user can immediately press down the sliding plug to close the water circuit. After the leak is repaired, the sliding plug can be pulled up to restore the water supply.

[0019] Third, the automatic shut-off valve can also be combined with water meters or pre-filters and other front-end water circuit equipment to form an integrated structure, which makes the functions of water meters and pre-filters more diverse and enhances their market competitiveness. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the automatic shut-off valve for the first embodiment.

[0021] Figure 2 This is a three-dimensional structural diagram of the valve core assembly in the first embodiment.

[0022] Figure 3 This is a three-dimensional exploded view of the automatic shut-off valve for water outages in the second embodiment.

[0023] Figure 4 This is a cross-sectional exploded view of the automatic shut-off valve of the second embodiment.

[0024] Figure 5 This is a cross-sectional view of the automatic shut-off valve according to the third embodiment.

[0025] Figure 6 This is a three-dimensional exploded view of the valve core assembly in the third embodiment.

[0026] Figure 7 This is a structural diagram of the automatic shut-off valve for water outages and the upstream equipment of the water circuit.

[0027] In the picture:

[0028] 1. Outer shell; 11. Mounting cavity; 10. Water inlet; 12. Water outlet; 13. Valve core assembly; 2. Check valve; 21. Valve body; 211. Check plug; 212. Second spring; 213. Sliding plug; 221. Plug rod; 222. Plug body; 223. First spring; 224. Seal; 24. Valve core seat; 241. Lateral water passage; 242. First sealing ring; 25. Handle; 3. Front-end water supply equipment. Detailed Implementation

[0029] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0030] like Figures 1 to 7 As shown, this utility model relates to a self-closing valve for water outages, comprising a housing 1 and a valve core assembly 2; the housing 1 has a mounting cavity 11, an inlet 12, and an outlet 13; the valve core assembly 2 includes a one-way valve 21 and a sliding plug 22; the one-way valve 21 is installed in the mounting cavity 11; the outlet of the one-way valve 21 communicates with the outlet 13; the sliding plug 22 has a plug rod 221 and a plug body 222 located in the mounting cavity 11, and the sliding plug 22 has a water-stopping position and a water-entering position; A first spring 223 is sleeved on the plug rod 221 to push the sliding plug 22 from the water-flow position to the water-stop position; when the sliding plug 22 is in the water-flow position, the plug body 222 is held in the upper part of the mounting cavity 11 under the action of water pressure; when the sliding plug 22 is in the water-stop position, the plug body 222 is located in the lower part of the mounting cavity 11 and blocks the flow channel in the inlet direction of the one-way valve 21; the water outlet 10 between the water inlet 12 and the mounting cavity 11 is located between the sliding plug 22 in the water-stop position and the plug body 222 in the water-flow position.

[0031] Thus, the water shut-off valve and pipeline structure disclosed in this utility model, when the water supply is interrupted, due to the loss of water pressure, under the action of the first spring 223, the sliding plug 22 switches from the water-flowing position to the water-stopping position, blocking the flow path to the one-way valve 21. After the water supply is restored, the water pressure also pushes the sliding plug 22 towards the water-stopping position, thus maintaining it in the water-stopping position. When the user manually pulls up the sliding plug 22, switching it back to the water-flowing position to restore the water supply, the water pressure will push the sliding plug 22 towards the water-flowing position, thus maintaining it in the water-flowing position. This water shut-off valve can also serve as an emergency water shut-off device. For example, if a faucet bursts, the user can promptly press down the sliding plug 22 to shut off the water supply, and after the leak is repaired, pull up the sliding plug 22 to restore the water supply.

[0032] Specifically, the valve core assembly 2 further includes a valve core seat 24, the sliding plug 22 is slidably connected to the valve core seat 24, and the two ends of the first spring 223 abut against the valve core seat 24 and the sliding plug 22 respectively; the valve core seat 24 is fixedly connected to the inner wall of the mounting cavity 11.

[0033] Preferably, a sealing element 224 is provided at the upper end of the first spring 223, the plug rod 221 passes through the sealing element 224, and the upper end of the first spring 223 is engaged in the groove of the sealing element 224. The sealing element seals the gap between the plug rod 221 and the valve core seat 24 to prevent water leakage when it comes in.

[0034] Preferably, such as Figure 1 and Figure 2 As shown, in the first embodiment of this utility model, the valve core seat 24 is connected to the one-way valve 21, and a lateral water passage 241 is formed on the valve core seat 24. The lateral water passage 241 is located between the sliding plug 22 in the water-stop position and the plug body 222 in the water-passing position. When the sliding plug 22 is in the water-stop position, the plug body 222 abuts and seals against the inlet of the one-way valve 21.

[0035] The one-way valve 21 has a valve body 211 and a one-way plug 212 that slides within the valve body 211. A second spring 213 is sleeved on the one-way plug 212.

[0036] The thread on the valve core seat 24 can be connected to the upper part of the side wall of the mounting cavity 11 (e.g., Figure 1 and Figure 2 (As shown).

[0037] Alternatively, as a second embodiment of this utility model, the difference from Embodiment 1 is that the threaded connection on the valve core seat 24 is to the lower part of the side wall of the mounting cavity 11 (e.g., Figure 3 , Figure 5 As shown in the figure.

[0038] Preferably, the valve core seat 24 is threaded to the inner wall of the mounting cavity 11, and a first sealing ring 242 is provided between the valve core seat 24 and the inner wall of the mounting cavity 11 to prevent leakage to the outside.

[0039] Preferably, as a third embodiment of the present invention, the valve core seat 24 and the one-way valve 21 are separately disposed (e.g., Figure 5 and Figure 6 As shown, the valve core seat 24 and the one-way valve 21 are respectively fixedly connected to the inner wall of the mounting cavity 11; when the sliding plug 22 is in the water-stop position, the plug body 222 abuts against the inlet of the one-way valve 21 to seal. The one-way valve 21 can also be coaxially installed in the outlet 13, and when the water is stopped, the sliding plug 22 in the water-stop position blocks the flow channel from the bottom of the mounting cavity 11 to the one-way valve 21.

[0040] Preferably, both the inlet 12 and the outlet 13 are threaded connections or heat-fused connections.

[0041] Preferably, a handle 25 is provided at the outer end of the stopper rod 221. By providing the handle 25, it is convenient for the user to press or lift the stopper rod 221.

[0042] This utility model also provides a pipeline structure, including the aforementioned automatic shut-off valve and water front-end device 3; the water front-end device 3 is integrally connected to the outer shell 1 of the automatic shut-off valve; the water front-end device 3 is connected to the inlet 12 side of the outer shell 1, or the water front-end device 3 is connected to the outlet 13 side of the outer shell 1. Furthermore, the water front-end device 3 is a water meter or a pre-filter.

[0043] The automatic shut-off valve can also be combined with water meters or pre-filters to form an integrated structure, which enriches the functions of water meters and pre-filters and enhances their market competitiveness.

[0044] 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 valve for water outages, characterized in that, The device includes a housing and a valve core assembly. The housing has a mounting cavity, an inlet, and an outlet. The valve core assembly includes a one-way valve and a sliding plug. The one-way valve is installed in the mounting cavity. The outlet of the one-way valve communicates with the outlet. The sliding plug has a plug rod and a plug body located in the mounting cavity. The sliding plug has a water-stopping position and a water-flowing position. A first spring is sleeved on the plug rod 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 plug body is held in the upper part of the mounting cavity under water pressure. When the sliding plug is in the water-stopping position, the plug body is located in the lower part of the mounting cavity and blocks the flow channel in the inlet direction of the one-way valve. The water passage between the inlet and the mounting cavity is located between the sliding plug in the water-stopping position and the plug body in the water-flowing position.

2. The self-closing valve for water outage as described in claim 1, characterized in that, The valve core assembly further includes a valve core seat, the sliding plug is slidably connected to the valve core seat, and the two ends of the first spring abut against the valve core seat and the sliding plug respectively; the valve core seat is fixedly connected to the inner wall of the mounting cavity.

3. The self-closing valve for water outage as described in claim 2, characterized in that, The upper end of the first spring is provided with a seal, the plug rod passes through the seal, and the upper end of the first spring is engaged in the groove of the seal.

4. The self-closing valve for water outage as described in claim 2, 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 sliding plug in the water-stop position and the plug body in the water-passing position. When the sliding plug is in the water-stop position, the plug body abuts and seals against the inlet of the one-way valve.

5. A self-closing valve for water outages as described in claim 2, 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; when the sliding plug is in the water-stopping position, the plug body abuts and seals against the inlet of the one-way valve.

6. The self-closing valve for water outage as described in claim 2, characterized in that, The valve core seat is threadedly connected to the inner wall of the mounting cavity, and a first sealing ring is provided between the valve core seat and the inner wall of the mounting cavity.

7. The self-closing valve for water outage as described in claim 1, characterized in that, Both the inlet and outlet are threaded connections or heat-fused connections.

8. The self-closing valve for water outage as described in claim 1, characterized in that, A handle is provided at the outer end of the stopper rod.

9. A pipeline structure, characterized in that, Includes the water shut-off valve and water circuit front-end device as described in any one of claims 1-8; the water circuit front-end device is integrally connected to the outer shell of the water shut-off valve; the water circuit front-end device is connected to the water inlet side of the outer shell, or the water circuit front-end device is connected to the water outlet side of the outer shell.

10. A pipeline structure as described in claim 9, characterized in that, The water supply front-end equipment is a water meter or a pre-filter.

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