Anti-freezing faucet with automatic drainage function

Abstract

The utility model belongs to the technical field of faucets, and particularly relates to an anti-freezing faucet with an automatic drainage function, which comprises a water supply pipeline, the water supply pipeline is connected with a central pipe, an elastic pipe is sleeved outside the central pipe, and an outer pipeline is sleeved outside the elastic pipe; the central pipe comprises a connecting pipe, an adapting pipe and a water passing pipe, the connecting pipe is in threaded connection with the water supply pipeline, and a water passing hole is formed in the upper end of the adapting pipe; the elastic pipe comprises an upper pipe part and a lower pipe part, the upper pipe part is movably sleeved outside the central pipe above the water passing hole, the lower pipe part is fixedly sleeved outside the adapting pipe below the water passing hole, a gap exists between the upper pipe part and the outer pipeline, and a sealing ring is arranged between the upper pipe part and the outer pipeline. The gap between the elastic pipe and the central pipe is opened through water flow impact so that water flow can pass through, residual water flow is automatically discharged through radial contraction of the elastic pipe after the faucet is closed, and the problem that the faucet is frozen in a cold environment due to water retention in the faucet is effectively solved.

Description

Technical Field

[0001] This utility model belongs to the field of faucet technology, specifically relating to an antifreeze faucet with automatic drainage function. Background Technology

[0002] Most faucets currently in use freeze in winter when temperatures are low because a lot of tap water remains inside, causing the water to freeze and making the faucet unusable. Most antifreeze faucets are either equipped with a heating function to defrost or use an external handle connected to a mechanical device that uses a piston to move up and down to expel water. The former consumes a lot of energy and is wasteful if the heating function is constantly on, and if it is turned on intermittently, it cannot guarantee the antifreeze effect. The latter requires manual operation of the handle to expel water from the faucet, which is inconvenient. Summary of the Invention

[0003] This invention addresses the problems of existing faucets that rely on heating for freeze protection. Intermittent operation fails to guarantee the freeze protection effect, while continuous operation leads to energy waste. Furthermore, mechanical freeze-proof faucets require a cumbersome handle. The invention provides a freeze-proof faucet with an automatic drainage function. Water flow opens the gap between the elastic tube and the central tube, allowing water to pass through. After the faucet is closed, the radial contraction of the elastic tube automatically drains any remaining water, effectively preventing water from freezing in cold environments.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An antifreeze faucet with automatic drainage function includes a water supply pipe connected to a central pipe, an outer elastic pipe fitted over the central pipe, and an outer pipe fitted over the elastic pipe. The outer pipe is fixedly connected to the water supply pipe, and the water supply pipe provides water to the faucet.

[0006] The central pipe includes a connecting pipe, a receiving pipe, and a water passage pipe connected sequentially from bottom to top. The connecting pipe is threaded to the water supply pipe. A water passage hole is opened at the upper end of the receiving pipe. The central pipe is fixed by the connecting pipe. Water flows through the water pipe into the receiving pipe and then through the water passage hole to flow out of the faucet.

[0007] The elastic tube includes an upper tube and a lower tube. The upper tube is movably sleeved on the outside of the central tube above the water passage hole, and the lower tube is fixedly sleeved on the outside of the receiving tube below the water passage hole. The upper tube and the lower tube are fixedly connected. There is a gap between the upper tube and the outer pipe, and a sealing ring is provided between the upper end of the upper tube and the outer pipe. A control rod is provided inside the central tube. The control rod is used to open or close the water inlet of the receiving tube. The water flow is adjusted by the control tube to allow water to enter the faucet. The water flow impacts the elastic tube from the water passage hole, opening the gap between the upper tube and the water passage pipe to allow water to flow out. The elasticity of the upper tube is used to prevent water from stagnating between the upper tube and the water passage pipe after the faucet is closed.

[0008] Preferably, the elastic tube is a tube made of rubber to ensure its elasticity.

[0009] Preferably, the receiving pipe is a hollow spherical pipe that receives water flow.

[0010] Preferably, the upper end of the external pipe is connected to a water outlet, and water flows from the faucet through the water outlet.

[0011] Preferably, the control rod includes an adjusting rod and a water-pressing piston. The adjusting rod is threadedly connected to the water pipe, and the lower end of the adjusting rod is fixedly connected to the water-pressing piston. The water-pressing piston is located inside the receiving pipe and matches the water inlet of the receiving pipe. Rotating the adjusting rod realizes the raising and lowering of the water-pressing piston, thereby realizing the blocking or opening of the water inlet of the receiving pipe by the water-pressing piston.

[0012] Preferably, the upper end of the adjusting rod extends out of the outer pipe and is fixedly connected to the top of the water inlet, and the adjusting rod is rotated by the handle.

[0013] Preferably, a vent hole is provided on the outer pipe, and the vent hole corresponds to the upper pipe section.

[0014] The beneficial effects of this utility model through the above technical solution are as follows:

[0015] This invention uses a rubber elastic tube. The faucet is opened and closed by rotating a control lever to drive the water pressure piston to rise and fall. When open, water flows into the receiving pipe and impacts the elastic tube through the water passage, increasing the diameter of the elastic tube and allowing water to flow out from the outlet. When closed, the water flow stops impacting the elastic tube, and the elastic tube contracts radially under its own elasticity, close to the central pipe, squeezing out the water remaining between the upper pipe and the water passage, allowing the residual water to flow out from the outlet. This effectively prevents the faucet from freezing in low-temperature environments due to stagnant water. At the same time, the receiving pipe is installed in the underground antifreeze layer to ensure smooth water supply and prevent the faucet from freezing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model when it is closed.

[0017] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 This is a schematic diagram showing the direction of water flow and the structure of the present invention when it is opened.

[0019] Figure 4 This utility model Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 This is a schematic diagram of the external pipe structure of this utility model.

[0021] The numbers in the attached diagram are as follows: 1 is the water supply pipe, 2 is the external pipe, 3 is the connecting pipe, 4 is the receiving pipe, 5 is the water passage pipe, 6 is the water passage hole, 7 is the upper pipe section, 8 is the lower pipe section, 9 is the sealing ring, 10 is the water outlet, 11 is the adjusting rod, 12 is the water pressure piston, 13 is the handle, and 14 is the vent hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] like Figures 1-5 As shown, this embodiment provides an antifreeze faucet with automatic drainage function, including a water supply pipe 1, which provides a water source. The water supply pipe 1 is connected to a central pipe, and an elastic pipe is fitted over the central pipe to ensure water flow. An outer pipe 2 is fitted over the elastic pipe and is fixedly connected to the water supply pipe 1. The outer pipe 2 ensures the strength of the faucet and protects the elastic pipe. A water outlet 10 is connected to the upper end of the outer pipe 2, through which water is dispensed from the faucet.

[0024] The central pipe includes a connecting pipe 3, a receiving pipe 4, and a water passage pipe 5 arranged sequentially from bottom to top. The connecting pipe 3 is threaded to the water supply pipe 1, and the central pipe is fixed through the connecting pipe 3. Water flows from the water supply pipe 1 through the connecting pipe 3 into the receiving pipe 4. The receiving pipe 4 is a hollow spherical tube. A water passage hole 6 is opened at the upper end of the receiving pipe 4. At least one water passage hole 6 is provided. The water flowing into the receiving pipe 4 leaves the receiving pipe 4 through the water passage hole 6 and reaches the space between the central pipe and the elastic pipe.

[0025] The elastic tube includes an upper tube section 7 and a lower tube section 8. The upper tube section 7 is movably sleeved on the outside of the central tube above the water passage hole 6, and the lower tube section 8 is fixedly sleeved on the outside of the receiving pipe 4 below the water passage hole 6. The lower tube section 8 matches and is glued to the receiving pipe 4 to fix the elastic tube. The upper tube section 7 and the lower tube section 8 are fixedly connected, and there is a gap between the upper tube section 7 and the outer pipe 2. The water flow in the receiving pipe 4 impacts the upper tube section 7 after passing through the water passage hole 6. The elastic tube is a tube body made of rubber. Under the impact of the water flow, the upper tube section 7 opens radially, so that there is a gap between the upper tube section 7 and the water passage pipe 5, and then the water flows through the upper tube section 7 and the water passage pipe 5. Water flows through the gap between pipes 5 to the outlet pipe 10 to achieve water discharge. When the faucet is closed, no more water enters the receiving pipe 4, and the upper pipe 7 loses the impact of water flow. Under its own elasticity, it contracts radially, and the inner wall of the upper pipe 7 tightly adheres to the outer wall of the water pipe 5, squeezing out the residual water and discharging it through the outlet pipe 10. This prevents the faucet from freezing due to stagnant water in low-temperature environments. A sealing ring 9 is provided between the upper end of the upper pipe 7 and the outer pipe 2. The sealing ring 9 prevents water from entering the gap between the upper pipe 7 and the outer pipe 2 and forming stagnant water. The sealing ring 9 is an annular plate made of elastic material to avoid affecting the radial expansion and contraction of the upper pipe 7.

[0026] A control rod is installed inside the central pipe. The control rod is used to open or close the water inlet of the receiving pipe 4. The control rod includes an adjusting rod 11 and a water-pressing piston 12. The adjusting rod 11 is threadedly connected to the water pipe 5. The lower end of the adjusting rod 11 is fixedly connected to the water-pressing piston 12. The water-pressing piston 12 is raised or lowered by rotating the adjusting rod 11. The water-pressing piston 12 is located inside the receiving pipe 4 and matches the water inlet of the receiving pipe 4. When the water-pressing piston 12 is raised, the water inlet of the receiving pipe 4 is opened, and the water in the water supply pipe 1 flows into the receiving pipe 4 through the connecting pipe 3. When the water-pressing piston 12 is lowered, its outer side blocks the water inlet of the receiving pipe 4, and the water in the connecting pipe 3 stops flowing into the receiving pipe 3. The upper end of the adjusting rod 11 extends out of the outer pipe 2 and is fixedly connected to the upper part of the water inlet 10. The adjusting rod 11 is rotated by rotating the handle 13.

[0027] A vent hole 14 is provided on the outer pipe 2, and the vent hole 14 corresponds to the upper pipe 7 to ensure smooth radial expansion and contraction of the upper pipe 7.

[0028] It should be noted that the water supply pipe 1, connecting pipe 3, and receiving pipe 4 are all located in the underground antifreeze layer to prevent the water in the receiving pipe 4 from freezing in a low-temperature environment.

[0029] It should be further explained that the outer pipe 2 includes a vertical part and a receiving part. The vertical part is sleeved on the outside of the upper pipe 7, and the receiving part is sleeved on the outside of the lower pipe 8. The receiving part includes a first receiving part and a second receiving part, which are fixedly connected. The first receiving part and the second receiving part are connected by a flange or weld (e.g., Figure 5 As shown), so as to facilitate the installation of external pipe 2.

[0030] As one possible implementation, the outer pipe 2 is sleeved on the outside of the elastic pipe, and its shape is not limited, as long as it covers the outside of the elastic pipe to protect the elastic pipe. For example, the outer pipe 2 is a straight pipe with an inner diameter larger than the outer diameter of the lower pipe 8.

[0031] The installation process of this utility model is as follows: if the lower end of the outer pipe 2 is a hollow spherical structure, firstly, the lower first receiving part of the outer pipe 2 is welded to the water supply pipe 1, then the elastic tube is sleeved on the outside of the receiving pipe 4 and the water pipe 5, and the connecting pipe 3 is threaded onto the water supply pipe 1. Then, the second receiving part and the vertical part on the upper side of the outer pipe 1 are installed, and then the control rod and the water outlet 10 are installed.

[0032] If the outer pipe 2 is a straight pipe, since its inner diameter is larger than the outer diameter of the lower pipe 8, first fix the outer pipe 2 to the water supply pipe 1, then put the elastic pipe on the outside of the receiving pipe 4 and the water pipe 5, thread the connecting pipe 3 to the water supply pipe 1, and then connect the control rod to the water outlet 10.

[0033] When in use, turning the handle 13 rotates the adjusting rod 11, which in turn raises the water pressure piston 12. Water from the water supply pipe 1 flows through the connecting pipe 3 into the receiving pipe 4, and then flows upward through the water passage hole 6 to leave the receiving pipe 4, impacting the upper pipe section 7 of the elastic pipe. Under the impact of the water flow, the upper pipe section 7 opens radially, creating a gap between the upper pipe section 7 and the water passage pipe 5. Water then flows through the gap between the upper pipe section 7 and the water passage pipe 5 to the outlet pipe 10 to achieve water discharge. When the faucet is finished, turning the handle 13 in the opposite direction moves the water pressure piston 12 downward to block the water inlet of the receiving pipe 4. Water from the water supply pipe 1 no longer enters the receiving pipe 4. The upper pipe section 7 of the elastic pipe loses the impact of the water flow and contracts radially under its own elasticity. The inner wall of the upper pipe section 7 then presses tightly against the outer wall of the water passage pipe 5, and the residual water between the upper pipe section 7 and the water passage pipe 5 is squeezed out and flows out from the outlet pipe 10, achieving automatic drainage.

[0034] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A freeze-proof faucet with automatic drainage function, comprising a water supply pipe (1), characterized in that, The water supply pipe (1) is connected to a central pipe, the central pipe is fitted with an elastic pipe, the elastic pipe is fitted with an outer pipe (2), and the outer pipe (2) is fixedly connected to the water supply pipe (1). The central pipe includes a connecting pipe (3), a receiving pipe (4) and a water passage pipe (5) arranged sequentially from bottom to top. The connecting pipe (3) is threadedly connected to the water supply pipe (1), and a water passage hole (6) is opened at the upper end of the receiving pipe (4). The elastic tube includes an upper tube (7) and a lower tube (8). The upper tube (7) is movably sleeved on the outside of the central tube above the water passage (6). The lower tube (8) is fixedly sleeved on the outside of the receiving tube (4) below the water passage (6). The upper tube (7) and the lower tube (8) are fixedly connected. There is a gap between the upper tube (7) and the outer pipe (2). A sealing ring (9) is provided between the upper end of the upper tube (7) and the outer pipe (2). A control rod is installed inside the central pipe, which is used to open or close the inlet of the receiving pipe (4).

2. The antifreeze faucet with automatic drainage function according to claim 1, characterized in that, The elastic tube is a tube made of rubber.

3. The antifreeze faucet with automatic drainage function according to claim 1, characterized in that, The receiving tube (4) is a hollow spherical tube.

4. A freeze-proof faucet with automatic drainage function according to claim 1, characterized in that, The upper end of the external pipe (2) is connected to a water outlet (10).

5. A freeze-proof faucet with automatic drainage function according to claim 4, characterized in that, The control rod includes an adjusting rod (11) and a water-pressing piston (12). The adjusting rod (11) is threadedly connected to the water pipe (5). The lower end of the adjusting rod (11) is fixedly connected to the water-pressing piston (12). The water-pressing piston (12) is located inside the receiving pipe (4) and matches the water inlet of the receiving pipe (4).

6. A freeze-proof faucet with automatic drainage function according to claim 5, characterized in that, The upper end of the adjusting rod (11) extends out of the outer pipe (2) and is fixedly connected to the water outlet (10) with a handle (13).

7. A freeze-proof faucet with automatic drainage function according to claim 1, characterized in that, A vent (14) is provided on the outer pipe (2), and the vent (14) corresponds to the upper pipe (7).

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