A freeze-proof outdoor faucet
By combining the design of a sealing sleeve and an insulation cover with the use of a heating coil, the problem of water residue freezing in outdoor hydrants under low-temperature conditions is solved, thus ensuring normal water flow and equipment reliability for antifreeze outdoor hydrants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUAN FIRE PROTECTION TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-26
AI Technical Summary
Existing antifreeze outdoor hydrants are prone to internal water residue freezing in low-temperature environments, leading to equipment blockage or cracking. Furthermore, the unreasonable sealing structure design increases the risk of water seepage and freezing.
The design combines a sealing sleeve and an insulation cover. The movement of the insulation cover releases the blockage of the water outlet, and the combination of the sealing ring and the movable rod allows residual water to be discharged quickly. The heating coil heats the connection point to prevent freezing.
It effectively prevents ice formation inside outdoor hydrants, ensures normal water flow, avoids equipment damage, and ensures normal operation and opening in extremely cold environments.
Smart Images
Figure CN224412687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of antifreeze outdoor hydrant technology, specifically to an antifreeze outdoor hydrant. Background Technology
[0002] Antifreeze outdoor hydrants are outdoor fire-fighting water supply facilities designed specifically for cold regions. Their core function is to prevent the internal water from freezing in low-temperature environments (usually below 0°C), ensuring that they can be opened normally and provide fire-fighting water in emergencies such as fires. At the same time, they prevent equipment from cracking, being damaged, or failing due to freezing. They are mainly used in residential areas, industrial areas, municipal roads, and other places in cold and high-altitude low-temperature areas in northern my country as basic outdoor fire-fighting water supply points. They are linked with indoor fire-fighting systems and fire truck water intake to improve the emergency response capability for fires in winter.
[0003] In real life, most outdoor valves are heated by insulating the outer shell, which not only wastes a lot of resources but also requires frequent inspections to check for damage. After heating is stopped, some water may remain inside. At low temperatures, this residual water will freeze and expand, causing blockages in pipes, valves, or outlets, or even causing the shell to crack. In addition, some outdoor valves have poorly designed sealing structures. After they are not used, groundwater or residual water in the pipes can easily seep upwards to areas prone to freezing (such as the upper part of the valve body), further increasing the risk of freezing. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an antifreeze outdoor hydrant, which can effectively solve the problem that some water may remain inside the hydrant and freeze.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] This utility model provides an antifreeze outdoor hydrant, including: a hydrant mechanism, an antifreeze mechanism on the hydrant mechanism, and a sealing mechanism below the hydrant mechanism;
[0007] The fire hydrant mechanism includes a fire hydrant outer shell, a sealing top cover fixed to the upper end of the fire hydrant outer shell, a fire hydrant inner shell fixed inside the fire hydrant outer shell, a water outlet pipe fixed to the outer surface of the fire hydrant outer shell and communicating with the fire hydrant inner shell, a sealing sleeve slidably connected to the outer surface of the fire hydrant inner shell, water outlet holes opened on the inner walls of both the fire hydrant outer shell and the fire hydrant inner shell, a fixed base fixed to the inner wall of the fire hydrant inner shell, a sealing ring slidably connected to the fire hydrant inner shell above the fixed base, a movable rod fixed to the upper end of the sealing ring, and the lower end of the movable rod extending through to the bottom of the sealing ring.
[0008] Preferably, the plurality of water outlets are located at the same height.
[0009] Preferably, the antifreeze mechanism includes a first fixing ring fixed to the outer surface of the fire hydrant shell, an insulation cover fixed to the upper end of the first fixing ring, a limit ring fixed to the upper end of the insulation cover, a second fixing ring fixed to the outer surface of the fire hydrant shell above the sealing mechanism, the limit ring being adapted to the second fixing ring, a limit groove fixed to the lower end of the second fixing ring, and a rubber coating on the outer surface of the limit ring and the inner wall of the limit groove.
[0010] Preferably, the sealing sleeve is fixedly connected to the heat insulation cover.
[0011] Preferably, the sealing mechanism includes a connecting housing fixed to the lower end of the fire hydrant housing, a heating coil embedded on the outer surface of the connecting housing, a sealing shell fixed to the lower end of the fixed base inside the connecting housing, an inner conical ring fixed inside the sealing shell, a first conical block slidably connected inside the sealing shell, an open hole at the upper end of the first conical block, a second conical block fixed at the lower end of the first conical block, and a second conical block embedded inside the first conical block that is elastically connected to the support frame.
[0012] Preferably, the conical block and the sealing sleeve are fixedly connected by a steel rope.
[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:
[0014] By moving the sealing sleeve along with the insulation cover, the blockage of the water outlet can be released, allowing residual water in the inner shell of the fire hydrant to be quickly discharged through the water outlet, reducing the possibility of freezing at the source. The cooperation between the sealing ring and the movable rod can also quickly seal the water outlet during use, ensuring normal water discharge function. In addition, the outer surface of the connecting shell of the sealing mechanism is embedded with a heating ring, which can continuously heat the connection with the underground pipe, preventing the connection from freezing and hardening at low temperatures, ensuring that the device can still be opened and operated normally in severe cold environments, and guaranteeing emergency use needs. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0018] Figure 3 This is a schematic diagram of the internal structure of the fire hydrant mechanism of this utility model;
[0019] Figure 4 This is a schematic diagram of the antifreeze mechanism of this utility model;
[0020] Figure 5 This is a schematic diagram of the internal structure of the sealing mechanism of this utility model.
[0021] Reference numerals in the attached drawings: 1. Fire hydrant mechanism; 2. Anti-freezing mechanism; 3. Sealing mechanism; 11. Fire hydrant outer shell; 12. Sealing top cover; 13. Fire hydrant inner shell; 14. Water outlet pipe; 15. Sealing sleeve; 16. Water outlet hole; 17. Fixed base; 18. Sealing ring; 19. Movable rod; 21. Fixed ring one; 22. Insulation cover; 23. Limiting ring; 24. Fixed ring two; 25. Limiting groove; 31. Connecting shell; 32. Heating coil; 33. Sealing shell; 34. Inner conical ring; 35. Conical block one; 36. Opening hole; 37. Support frame; 38. Conical block two. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] The present invention will be further described below with reference to the embodiments.
[0024] Example: Refer to Figures 1 to 5 A type of antifreeze outdoor hydrant includes: a hydrant mechanism 1, an antifreeze mechanism 2 on the hydrant mechanism 1, and a sealing mechanism 3 below the hydrant mechanism 1.
[0025] To further explain, the following settings are implemented to drain water from areas prone to freezing, such as... Figure 3As shown, the fire hydrant mechanism 1 includes a fire hydrant outer shell 11, a sealing top cover 12 fixed to the upper end of the fire hydrant outer shell 11, a fire hydrant inner shell 13 fixed inside the fire hydrant outer shell 11, a water outlet pipe 14 connected to the fire hydrant inner shell 13 fixed to the outer surface of the fire hydrant outer shell 11, a sealing sleeve 15 slidably connected to the outer surface of the fire hydrant inner shell 13, water outlet holes 16 are provided on the inner walls of both the fire hydrant outer shell 11 and the fire hydrant inner shell 13, and multiple water outlet holes 16 are located at the same height. A fixed base 17 is fixed to the inner wall of the fire hydrant inner shell 13, and a sealing ring 18 slidably connected to the fire hydrant inner shell 13 is provided above the fixed base 17. A movable rod 19 is fixed to the upper end of the sealing ring 18, and the lower end of the movable rod 19 extends through to the lower part of the sealing ring 18.
[0026] To further explain, the following settings are implemented to protect the exposed components of the insulation system, such as... Figure 4 As shown, the antifreeze mechanism 2 includes a fixing ring 21 fixed to the outer surface of the fire hydrant housing 11. An insulation cover 22 is fixed to the upper end of the fixing ring 21. The sealing sleeve 15 is fixedly connected to the insulation cover 22. A limiting ring 23 is fixed to the upper end of the insulation cover 22. A fixing ring 24 fixed to the outer surface of the fire hydrant housing 11 is provided above the sealing mechanism 3. The limiting ring 23 is adapted to the fixing ring 24. A limiting groove 25 is fixed to the lower end of the fixing ring 24. The outer surface of the limiting ring 23 and the inner wall of the limiting groove 25 are both provided with a rubber coating.
[0027] To further explain, the following settings are required for the device to function properly: Figure 5 As shown, the sealing mechanism 3 includes a connecting housing 31 fixed to the lower end of the fire hydrant housing 11. A heating coil 32 is embedded on the outer surface of the connecting housing 31. A sealing housing 33 fixed to the lower end of the fixed base 17 is provided inside the connecting housing 31. An inner conical ring 34 is fixed inside the sealing housing 33. A conical block 35 is slidably connected inside the sealing housing 33. The conical block 35 is fixedly connected to the sealing sleeve 15 by a steel rope. An open hole 36 is opened at the upper end of the conical block 35. A conical block 38 is fixed at the lower end of the conical block 35. The conical block 38 is embedded in the conical block 35 and is elastically connected to the support frame 37.
[0028] The working principle of this utility model is as follows: When the water inside the device freezes in winter due to temperature drop, the insulation cover 22 of the antifreeze mechanism 2 is precisely matched with the limiting groove 25 of the fixing ring 24 through the upper limiting ring 23. By manually pulling the limiting ring 23 upward, the insulation cover 22 can be completely fitted onto the outer surface of the fire hydrant shell 11. The rubber coating on the contact surface between the limiting ring 23 and the limiting groove 25 prevents the limiting ring 23 from falling downward. The insulation cover 22 can effectively isolate the intrusion of external cold air, reduce internal heat loss, and provide the first antifreeze barrier for the device; at the same time, the sealing sleeve 15, due to its contact with the insulation... The heat insulation cover 22 is fixedly connected and in the initial position. The cone-shaped block 35 of the sealing mechanism 3 is driven by the steel rope to tightly seal the lower channel, preventing groundwater or residual water in the pipe from flowing upwards to the easily frozen area, that is, the inner shell 13 of the fire hydrant. The sealing sleeve 15 in the inner shell 13 of the fire hydrant will move upwards with the heat insulation cover 22, releasing the airtight seal on the water outlet 16 on the inner shell 13 of the fire hydrant, so that the water in the inner shell 13 of the fire hydrant will be discharged outwards from the water outlet 16. This blocks the material basis for freezing from multiple aspects and solves the problem of freezing and blockage caused by water residue and cold air intrusion in the existing technology.
[0029] When water needs to be dispensed, the operating lever 19 moves the sealing ring 18 downward, causing the sealing ring 18 to seal the water outlet 16 on the inner shell 13 of the fire hydrant. When the operating lever 19 enters the open hole 36, it can push the conical block 38 to move downward against the elastic force, allowing the water flow below to re-enter the inner shell 13 of the fire hydrant. Then, water can be dispensed through the water outlet pipe 14. The heating ring 32 embedded on the connecting shell 31 can continuously heat the connecting shell 31, ensuring that the water flow at the connection point does not freeze. This ensures that the device can always be used normally without additional complicated operations. It not only ensures the antifreeze effect when not in operation, but also ensures reliable water dispensing when in operation, effectively solving the problem of outdoor hydrants being prone to freezing and inconvenient to use in low-temperature environments in the existing technology.
[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. An anti-freezing type outdoor faucet, characterized by comprising: include: Fire hydrant mechanism (1), the fire hydrant mechanism (1) is provided with antifreeze mechanism (2), and the fire hydrant mechanism (1) is provided with sealing mechanism (3) below. The fire hydrant mechanism (1) includes a fire hydrant shell (11), a sealing top cover (12) fixed at the upper end of the fire hydrant shell (11), a fire hydrant inner shell (13) fixed inside the fire hydrant shell (11), a water outlet pipe (14) connected to the fire hydrant inner shell (13) fixed on the outer surface of the fire hydrant shell (11), a sealing sleeve (15) slidably connected to the outer surface of the fire hydrant inner shell (13), water outlet holes (16) are provided on the inner walls of both the fire hydrant shell (11) and the fire hydrant inner shell (13), a fixed base (17) is fixed on the inner wall of the fire hydrant inner shell (13), a sealing ring (18) slidably connected to the fire hydrant inner shell (13) is provided above the fixed base (17), a movable rod (19) is fixed at the upper end of the sealing ring (18), and the lower end of the movable rod (19) extends through to the lower part of the sealing ring (18).
2. The antifreeze outdoor hydrant according to claim 1, characterized in that, Multiple water outlets (16) are located at the same height.
3. The antifreeze outdoor hydrant according to claim 1, characterized in that, The antifreeze mechanism (2) includes a fixing ring one (21) fixed to the outer surface of the fire hydrant shell (11). The upper end of the fixing ring one (21) is fixed with a heat insulation cover (22). The upper end of the heat insulation cover (22) is fixed with a limiting ring (23). The sealing mechanism (3) is provided with a fixing ring two (24) fixed to the outer surface of the fire hydrant shell (11). The limiting ring (23) is adapted to the fixing ring two (24). The lower end of the fixing ring two (24) is fixed with a limiting groove (25). The outer surface of the limiting ring (23) and the inner wall of the limiting groove (25) are both provided with a rubber coating.
4. The antifreeze outdoor hydrant according to claim 3, characterized in that, The sealing sleeve (15) is fixedly connected to the heat insulation cover (22).
5. The antifreeze outdoor hydrant according to claim 1, characterized in that, The sealing mechanism (3) includes a connecting shell (31) fixed to the lower end of the fire hydrant shell (11). A heating coil (32) is embedded on the outer surface of the connecting shell (31). A sealing shell (33) fixed to the lower end of the fixed base (17) is provided inside the connecting shell (31). An inner conical ring (34) is fixed inside the sealing shell (33). A conical block (35) is slidably connected inside the sealing shell (33). An open hole (36) is opened at the upper end of the conical block (35). A conical block (38) is fixed at the lower end of the conical block (35). A conical block (38) is embedded inside the conical block (35) and is elastically connected to the support frame (37).
6. The antifreeze outdoor hydrant according to claim 5, characterized in that, The conical block (35) and the sealing sleeve (15) are fixedly connected by steel rope.