Water leakage prevention double-layer water inlet pipe assembly

Abstract

The utility model discloses an anti-leakage double-layer water inlet pipe assembly, which relates to the technical field of water pipes and comprises an inner hose, one end of the inner hose is connected with a water outlet connector, the other end of the inner hose is connected with a water inlet connector, the water outlet connector and the water inlet connector are respectively provided with a butt-joint threaded cap, and the outer side of the inner hose is sleeved with an outer corrugated pipe. A one-way valve assembly is arranged in the water inlet connector and comprises a one-way valve body fixedly installed in the water inlet connector, a holder is fixedly installed at one end of the one-way valve body, a positioning shaft is installed on the holder in a sliding mode, the positioning shaft is sleeved with a reset spring, and a sealing plug is fixedly installed at the tail end of the positioning shaft. A blocking mechanism is mounted on one side of the one-way valve assembly, and a mounting groove is formed in the outer wall of the one-way valve body According to the anti-leakage double-layer water inlet pipe assembly, through cooperative use of the one-way valve assembly and the plugging mechanism, tap water can be prevented from passing through the inner hose when a pipeline is broken, and waste of water resources is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water pipe technology, specifically a leak-proof double-layer water inlet pipe assembly. Background Technology

[0002] The inlet pipe is a core component of the water supply system, responsible for directing the flow of water from the source to water-using equipment or storage devices. It is typically made of corrosion-resistant materials (such as PVC, stainless steel, copper, or PPR) and is classified into flexible hoses and rigid pipes depending on its application.

[0003] In the prior art, patent announcement number CN220378954U discloses a one-way valve and a drain pipe with a one-way valve. The diaphragm and diaphragm seat of the one-way valve are made of soft rubber material, and the valve plate is made of hard rubber material. The valve plate has a through hole in the middle, which is vertically connected. The diaphragm is attached downward to block the through hole, and the diaphragm moves upward to open the through hole. The edge of the valve plate has a protruding snap-fit ​​part, and the outer wall of the diaphragm seat has a side wall opening that communicates with the through hole of the diaphragm seat. The side wall opening corresponds to the snap-fit ​​part, so that the snap-fit ​​part can extend out of the outer wall of the diaphragm seat.

[0004] Installing a one-way valve inside the pipeline can prevent liquid backflow. However, after prolonged use, hoses are at risk of rupture due to material aging, wear, or other external factors. Once a hose ruptures, water will gradually leak out from the crack. If this leakage is not detected and addressed in time, it will not only cause the hose to malfunction but also result in the waste of precious water resources, leading to water waste problems and causing unnecessary economic losses and environmental burdens for users. Utility Model Content

[0005] The purpose of this invention is to provide a leak-proof double-layer water inlet pipe assembly to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof double-layer water inlet pipe assembly, including an inner hose, one end of which is connected to a water outlet, and the other end of which is connected to a water inlet. Both the water outlet and the water inlet are fitted with threaded caps. An outer corrugated pipe is sleeved on the outer side of the inner hose. A one-way valve assembly is provided inside the water inlet. The one-way valve assembly includes a one-way valve body fixedly installed inside the water inlet. A retainer is fixedly installed at one end of the one-way valve body, a positioning shaft is slidably installed on the retainer, a return spring is sleeved on the positioning shaft, a sealing plug is fixedly installed at the end of the positioning shaft, and a sealing mechanism is installed on one side of the one-way valve assembly.

[0007] Preferably, a mounting groove is provided on the outer wall of the one-way valve body, and a first sealing ring is installed in the mounting groove.

[0008] Preferably, the retainer has a sliding hole in the middle, the positioning shaft is slidably mounted on the retainer through the sliding hole, and the outer corrugated tube has clamps at both ends, and the outer corrugated tube is fixed to the inner flexible tube by the clamps.

[0009] Preferably, the sealing plug is slidably mounted on the one-way valve body via a positioning shaft, one end of the return spring is connected to the retainer, the other end of the return spring is connected to the sealing plug, and the first sealing ring is mounted on the one-way valve body via a mounting groove.

[0010] Preferably, the sealing mechanism includes a mounting bracket fixedly installed inside the water inlet interface, a mechanism cylinder fixedly installed on the mounting bracket, the mechanism cylinder being filled with bentonite, a piston plate slidably installed inside the mechanism cylinder, a push rod fixedly installed on the piston plate, and the push rod being aligned front and rear with the positioning shaft, and a capillary tube connected to the mechanism cylinder.

[0011] Preferably, the mechanism cylinder has an inlet and outlet, the push rod extends out of the mechanism cylinder through the inlet and outlet, and a second sealing ring is installed inside the inlet and outlet of the mechanism cylinder.

[0012] Preferably, the mechanism cylinder is fixedly installed in the water inlet by a mounting bracket, the push rod is movably installed in the mechanism cylinder by a piston plate, one end of the capillary tube is connected to the mechanism cylinder, and the other end of the capillary tube is connected to the outer corrugated pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this application, under the pressure of tap water, the return spring is compressed, causing the sealing plug to separate from the front port of the one-way valve body. At this time, tap water can enter the inner hose, thus completing the water conveyance function of the inner hose. When tap water backflows, the return spring will push the sealing plug to reset, closing the front port of the one-way valve body to prevent the backflow of liquid in the inner hose.

[0015] 2. In this application, when the inner hose ruptures, the leaked water flows to the outer bellows. Under the action of capillary action, the water enters the mechanism cylinder, causing the bentonite to absorb water and expand. After absorbing water and expanding, the bentonite pushes the piston plate forward. The forward movement of the piston plate drives the push rod forward, which in turn moves the positioning shaft forward, ultimately causing the sealing plug to close the front port of the one-way valve body. This series of actions effectively prevents tap water from passing through the inner hose when the pipe ruptures, thereby reducing water waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the one-way valve assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing mechanism of this utility model.

[0020] The markings in the diagram are: 1. Water outlet; 2. Outer bellows; 3. Inner hose; 4. Water inlet; 5. Threaded cap; 6. Check valve assembly; 601. Check valve body; 602. Retainer; 603. Positioning shaft; 604. Return spring; 605. Sealing plug; 606. Mounting groove; 607. First sealing ring; 7. Sealing mechanism; 701. Capillary tube; 702. Mechanism cylinder; 703. Bentonite; 704. Piston plate; 705. Push rod; 706. Second sealing ring; 707. Mounting bracket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a leak-proof double-layer water inlet pipe assembly, including an inner hose 3, one end of which is connected to a water outlet 1, and the other end of which is connected to a water inlet 4. Both the water outlet 1 and the water inlet 4 are equipped with mating thread caps 5. An outer corrugated pipe 2 is sleeved on the outside of the inner hose 3. A one-way valve assembly 6 is provided inside the water inlet 4. A sealing mechanism 7 is installed on one side of the one-way valve assembly 6. Through the cooperation of the one-way valve assembly 6 and the sealing mechanism 7, tap water can be prevented from passing through the inner hose 3 when the pipe is broken, thereby reducing the waste of water resources.

[0023] like Figure 2 and Figure 3As shown, the one-way valve assembly 6 includes a one-way valve body 601 fixedly installed in the water inlet 4. A retainer 602 is fixedly installed at one end of the one-way valve body 601. A positioning shaft 603 is slidably installed on the retainer 602. A return spring 604 is sleeved on the positioning shaft 603. A sealing plug 605 is fixedly installed at the end of the positioning shaft 603. An installation groove 606 is opened on the outer wall of the one-way valve body 601. A first sealing ring 607 is installed in the installation groove 606. A sliding hole is opened in the middle of the retainer 602. The positioning shaft 603 is slidably installed on the retainer 602 through the sliding hole. The outer bellows 2 is provided with clamps at both ends. The outer bellows 2 is fixed to the inner hose 3 by the clamps.

[0024] Specifically, under the pressure of tap water, the return spring 604 is compressed, causing the sealing plug 605 to move away from the front port of the one-way valve body 601. Once the sealing plug 605 successfully moves away from the front port of the one-way valve body 601, tap water can flow smoothly into the inner hose 3, effectively realizing the water delivery function of the inner hose 3 and ensuring normal water supply. However, when tap water backflow occurs, the return spring 604 will respond quickly, performing its reset function and pushing the sealing plug 605 back to its original position, tightly blocking the front port of the one-way valve body 601. In this way, backflow of liquid in the inner hose 3 is effectively prevented, ensuring the normal operation of the entire system and the one-way flow of water.

[0025] like Figure 2 and Figure 4 As shown, the sealing mechanism 7 includes a mounting bracket 707 fixedly installed in the water inlet interface 4. A mechanism cylinder 702 is fixedly installed on the mounting bracket 707. The mechanism cylinder 702 is filled with bentonite 703. A piston plate 704 is slidably installed in the mechanism cylinder 702. A push rod 705 is fixedly installed on the piston plate 704, and the push rod 705 is aligned with the positioning shaft 603. A capillary tube 701 is connected to the mechanism cylinder 702. The mechanism cylinder 702 has an inlet and outlet. The push rod 705 extends out of the mechanism cylinder 702 through the inlet and outlet. A second sealing ring 706 is installed in the inlet and outlet of the mechanism cylinder 702.

[0026] Specifically, when the inner hose 3 ruptures, the leaked water gradually flows along the gaps in the pipe and eventually collects in the internal space of the outer bellows 2. Inside the outer bellows 2, the capillary tube 701 effectively guides the water inside the outer bellows 2 into the mechanism cylinder 702. As water continuously enters, the bentonite 703 inside the mechanism cylinder 702 begins to absorb water and gradually expands. During the process of absorbing water and expanding, the volume of the bentonite 703 increases significantly, thereby generating a certain thrust. This thrust acts on the piston plate 704, causing it to move forward. The forward movement of the piston plate 704 is not isolated; it further drives the push rod 705 connected to it to move forward together. As the push rod 705 moves forward, it transmits power to the positioning shaft 603, causing the positioning shaft 603 to move forward as well. Ultimately, this series of linked actions causes the sealing plug 605 to tightly block the front opening of the one-way valve body 601. In this way, when the inner hose 3 ruptures, the tap water is effectively stopped and cannot continue to flow out through the ruptured inner hose 3, thus greatly reducing the waste of water resources.

[0027] Working principle: When in use, the water inlet 4 is connected to the faucet via the threaded cap 5. After the faucet is turned on, tap water enters the water inlet 4. Under the pressure of the tap water, the return spring 604 is compressed, causing the sealing plug 605 to leave the front port of the one-way valve body 601. After the sealing plug 605 leaves the front port of the one-way valve body 601, the tap water will enter the inner hose 3, realizing the water delivery function of the inner hose 3. When the tap water flows back, the return spring 604 will push the sealing plug 605 to reset, blocking the front port of the one-way valve body 601 and preventing the liquid in the inner hose 3 from flowing back. When the inner hose 3 ruptures, the leaking water flows into the outer bellows 2. Under the action of the capillary tube 701, the water in the outer bellows 2 enters the mechanism cylinder 702, causing the bentonite 703 to absorb water and expand. After the bentonite 703 absorbs water and expands, it pushes the piston plate 704 forward. After the piston plate 704 moves forward, it drives the push rod 705 forward. The forward-moving push rod 705 drives the positioning shaft 603 forward, causing the sealing plug 605 to block the front port of the one-way valve body 601, thereby preventing tap water from passing through the inner hose 3 when the pipe ruptures, reducing water waste.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A leak-proof double-layer water inlet pipe assembly, comprising an inner flexible hose (3), one end of which is connected to a water outlet (1), and the other end of which is connected to a water inlet (4), wherein both the water outlet (1) and the water inlet (4) are fitted with mating threaded caps (5), characterized in that: The inner hose (3) is fitted with an outer corrugated pipe (2) on the outside. A one-way valve assembly (6) is provided inside the water inlet (4). The one-way valve assembly (6) includes a one-way valve body (601) fixedly installed inside the water inlet (4). A retainer (602) is fixedly installed at one end of the one-way valve body (601). A positioning shaft (603) is slidably installed on the retainer (602). A return spring (604) is fitted on the positioning shaft (603). A sealing plug (605) is fixedly installed at the end of the positioning shaft (603). A sealing mechanism (7) is installed on one side of the one-way valve assembly (6).

2. The leak-proof double-layer water inlet pipe assembly according to claim 1, characterized in that: The one-way valve body (601) has an installation groove (606) on its outer wall, and a first sealing ring (607) is installed in the installation groove (606).

3. The leak-proof double-layer water inlet pipe assembly according to claim 2, characterized in that: The retainer (602) has a sliding hole in the middle, and the positioning shaft (603) is slidably installed on the retainer (602) through the sliding hole. The outer corrugated tube (2) has clamps at both ends, and the outer corrugated tube (2) is fixed on the inner flexible tube (3) by the clamps.

4. The leak-proof double-layer water inlet pipe assembly according to claim 3, characterized in that: The sealing plug (605) is slidably installed in the one-way valve body (601) via the positioning shaft (603). One end of the return spring (604) is connected to the retainer (602), and the other end of the return spring (604) is connected to the sealing plug (605). The first sealing ring (607) is installed on the one-way valve body (601) via the mounting groove (606).

5. The leak-proof double-layer water inlet pipe assembly according to claim 4, characterized in that: The sealing mechanism (7) includes a mounting bracket (707) fixedly installed in the water inlet (4), a mechanism cylinder (702) fixedly installed on the mounting bracket (707), bentonite (703) filled in the mechanism cylinder (702), a piston plate (704) slidably installed in the mechanism cylinder (702), a push rod (705) fixedly installed on the piston plate (704), and the push rod (705) is aligned with the positioning shaft (603) front and back. A capillary tube (701) is connected to the mechanism cylinder (702).

6. The leak-proof double-layer water inlet pipe assembly according to claim 5, characterized in that: The mechanism cylinder (702) has an inlet and outlet, the push rod (705) extends out of the mechanism cylinder (702) through the inlet and outlet, and a second sealing ring (706) is installed in the inlet and outlet of the mechanism cylinder (702).

7. A leak-proof double-layer water inlet pipe assembly according to claim 6, characterized in that: The mechanism cylinder (702) is fixedly installed in the water inlet (4) by the mounting bracket (707), the push rod (705) is movably installed in the mechanism cylinder (702) by the piston plate (704), one end of the capillary tube (701) is connected to the mechanism cylinder (702), and the other end of the capillary tube (701) is connected to the outer corrugated pipe (2).

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