Anti-freezing faucet

Abstract

The utility model belongs to the technical field of faucets, and particularly relates to an anti-freezing faucet which solves the problem that water stored in a pipe cannot be smoothly discharged due to atmospheric pressure. The anti-freezing faucet comprises a faucet body, the faucet body is connected to the upper end of a water supply pipeline, an anti-freezing valve is arranged at the lower end of the water supply pipeline, the anti-freezing valve is further connected with a water supply source, and a first water outlet is formed in the anti-freezing valve. When the water supply pipeline is communicated with the first water outlet, the water supply source is not communicated with the water supply pipeline; a vent valve is further arranged on the water supply pipeline and comprises an air inlet communicated with the outside and an air outlet communicated with the upper end of the water supply pipeline; when the anti-freezing valve is in an anti-freezing state, the vent valve is opened, external air enters the water supply pipeline through the vent valve, and water stored in the water supply pipeline is discharged through the first water outlet; when the frost valve is in a water supply state, the vent valve is closed. The effect of smoothly discharging water stored in the water supply pipeline is achieved, and the anti-freezing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of faucets, in particular to an antifreeze faucet. Background Art

[0002] A faucet is a component that controls water flow. In an outdoor environment, when the temperature is below freezing, the water in the faucet may freeze and affect subsequent water use, and may even damage the faucet.

[0003] In the current existing technology, the anti-freeze structure of the water supply pipe and the faucet is mostly achieved by setting a drain valve. When the drain valve is opened, the water in the water supply pipe and the faucet is discharged, which can prevent the water from freezing and damaging the pipe or the faucet.

[0004] However, due to the existence of atmospheric pressure, even if the drain port of the antifreeze valve is opened, the water in the pipe may not be able to be discharged quickly and smoothly. The water may be "trapped" in the pipe and may still freeze, and the antifreeze effect cannot be guaranteed. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and to provide an antifreeze faucet.

[0006] In order to achieve the purpose of innovation of this utility model, the following technical solutions can be used:

[0007] An antifreeze faucet includes a faucet body, wherein the faucet body is connected to the upper end of a water supply pipeline, the lower end of the water supply pipeline is connected to a water supply source, an antifreeze valve is provided at the lower end of the water supply pipeline, the antifreeze valve is connected to the water supply source and the water supply pipeline respectively to realize opening and closing between the water supply source and the water supply pipeline, the antifreeze valve is also provided with a first drain port which can be communicated with the water supply pipeline, and when the water supply source is communicated with the water supply pipeline, the passage between the water supply pipeline and the first drain port is closed, and when the passage between the water supply pipeline and the first drain port is opened, the passage between the water supply source and the water supply pipeline is closed. The channel is closed; a vent valve is also provided on the water supply pipeline, and the vent valve includes an air vent and an air outlet, the vent is communicated with the outside, and the air outlet is communicated with the upper end of the water supply pipeline; and when the antifreeze valve is in a state where the first drain port is communicated with the water supply pipeline and the water supply source and the water supply pipeline are closed, the vent valve is opened, and the outside air enters the upper end of the water supply pipeline through the vent valve through the air outlet, and the stored water in the water supply pipeline can be discharged from the first drain port; when the antifreeze valve is in a state where the first drain port is closed and the water supply source and the water supply pipeline are communicated, the vent valve is closed.

[0008] The antifreeze faucet of the present invention mainly achieves the antifreeze effect by discharging the water stored in the water supply pipeline through the antifreeze valve. The antifreeze valve can be switched between the water supply state and the antifreeze state. In the water supply state, the water supply source and the water supply pipeline are connected, the first drain port is closed, and the water from the water supply source is input into the water supply pipeline to supply water to the faucet body. In the antifreeze state, the first drain port is opened, and the input of the water supply source is closed, and the water stored in the water supply pipeline is discharged from the first drain port, thereby preventing the water from freezing and causing the volume to increase and the pipeline to crack. In addition, the setting of the vent valve can effectively balance the air pressure inside and outside the water supply pipeline, ensuring the smooth discharge of the stored water. When the antifreeze valve is switched to the antifreeze state, the vent valve opens the vent port and the channel at the upper end of the water supply pipeline, allowing outside air to enter, which is used to adapt to the pressure reduction phenomenon caused by the outflow of stored water in the water supply pipeline, thereby ensuring an effective antifreeze effect.

[0009] In the above-mentioned antifreeze faucet, a linkage structure is provided between the antifreeze valve and the vent valve, and the linkage structure controls the synchronous movement of the antifreeze valve and the vent valve.

[0010] The linkage structure is used to achieve synchronous switching of the antifreeze valve and the vent valve, which is convenient to operate and improves practicality. This linkage can be achieved through solenoid valves with associated actions or corresponding mechanical structures.

[0011] In the above-mentioned antifreeze faucet, the antifreeze valve and the vent valve are double-row switch valves arranged in an integrated structure. The double-row switch valve includes a water valve body and a vent valve body connected as one body, and the air outlet of the vent valve body is connected to the water supply pipeline through a vent pipeline.

[0012] The water valve body and the vent valve body are integrally formed on the double-row switch valve, with high structural strength. The vent pipe is used to adapt to the distance between the vent valve body and the upper end of the water supply pipe to ensure that the air outlet is connected to the upper end of the water supply pipe.

[0013] In the above-mentioned antifreeze faucet, the water flow valve body includes a first water outlet connected to the water supply pipeline, a first water inlet connected to the water supply source, and a first drain connected to the outside world. A first valve ball is provided in the water flow valve body, and a water flow channel is opened on the first valve ball.

[0014] There are three valve ports on the water valve body, and the valve ports are connected by water channels. The first valve ball is used to control the on-off relationship between the corresponding channels, which is equivalent to a three-way valve.

[0015] As an optimization, the first water outlet, the first water inlet and the first drain outlet are located on the same plane, and the water passage is T-shaped.

[0016] The first water outlet, the first water inlet and the first drain outlet are arranged in a T-shape, and the rotation axis of the first valve ball is perpendicular to the arrangement plane.

[0017] In the above-mentioned antifreeze faucet, the vent valve body includes an air outlet connected to the vent pipe and a vent connected to the outside world. A second valve ball is provided in the vent valve body, and an air passage is provided on the second valve ball.

[0018] The vent valve body is provided with an air outlet and an air inlet, wherein the air passage connects the two valve ports, and the second valve ball is used to control the on-off state between them.

[0019] In the above-mentioned antifreeze faucet, a linkage channel is provided between the water valve body and the vent valve body. The linkage structure includes a linkage rod rotatably connected to the linkage channel. The two ends of the linkage rod are respectively docked with the second card grooves on the first valve ball and the second valve ball through the second card body.

[0020] The linkage rod is used for transmission between the first valve ball and the second valve ball. The linkage rod is arranged in the linkage channel. The two ends are respectively connected to the first valve ball and the second valve ball through the I-shaped second card body, which has a stable transmission effect.

[0021] In the above-mentioned antifreeze faucet, a rotation drive structure is provided on the water flow valve body or the ventilation valve body, and the rotation drive structure includes a first rotating rod rotatably connected to the side of the water flow valve body away from the ventilation valve body or the side of the ventilation valve body away from the water flow valve body, and the first valve ball and the second valve ball are located on a straight line where the rotation axis of the first rotating rod is located. The inner end of the first rotating rod is provided with a first card body that docks with the first card groove on the first valve ball or the second valve ball, and the outer end is provided with a first manual operating part, or is transmission-connected to the first rotation drive assembly.

[0022] The first rotating rod is rotatably connected to the water valve body or the ventilation valve body, and its inner end is engaged with the corresponding first slot on the valve ball through a first straight-line clamping body to achieve synchronous rotation. A first manual operating part is provided at the outer end to facilitate rotation by the user. In order to achieve automatic control, the first rotating rod can also be connected to a first rotating drive component such as a motor to achieve electric control.

[0023] In the above-mentioned antifreeze faucet, a three-way connecting pipe is provided between the water supply pipeline and the faucet body, and the three-way connecting pipe includes an air inlet connected to the vent valve, a second water inlet connected to the water supply pipeline, and a second water outlet connected to the faucet body.

[0024] The water supply pipeline, the faucet body and the ventilation pipeline are connected through a three-way connecting pipe to achieve communication among the three.

[0025] In the above-mentioned antifreeze faucet, a faucet body antifreeze structure is further provided between the faucet body and the water supply pipeline. The faucet body antifreeze structure includes a drainage three-way valve for draining the water stored in the faucet body.

[0026] A three-way drainage valve is provided on the upstream side of the faucet body. This structure is close to the faucet body and is easy to operate. It can be used to drain the water stored in the faucet body and only protect the faucet body from freezing. Moreover, when this structure is operated, the faucet body can be opened at the same time, so that the water stored in the mouth of the faucet body due to atmospheric pressure or viscosity can also be discharged, further improving the anti-freeze effect.

[0027] In the above-mentioned antifreeze faucet, the drainage three-way valve includes a third water outlet connected to the faucet body, a third water inlet connected to the water supply pipe, and a second drain outlet connected to the outside world. The drainage three-way valve is provided with a third valve ball that rotates synchronously with the second rotating rod, which is used to control the connection between the water supply pipe and the faucet body, or control the connection between the faucet body and the second drain outlet. The second rotating rod passes through the drainage three-way valve, and the outer end is provided with a second manual operating part, or is connected to the second rotation drive assembly.

[0028] The three valve ports of the three-way drainage valve are connected to the water supply line, the faucet body, and the outside atmosphere, respectively. The third valve ball is used to control the connection between the valve ports. When the faucet body is connected only to the water supply line, the three-way drainage valve is used to guide water between them. When connected only to the second drain port, it can be used to drain the water in the faucet. Synchronously opening the faucet body prevents the water from being affected by atmospheric pressure and preventing it from draining smoothly. It also allows the water in the faucet body to be drained, ensuring the drainage and anti-freeze effect of the faucet body. To realize the function of automatically controlling the second rotating rod, the second linkage rod can also be connected to a second rotating drive component, such as a motor, to achieve electric control.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. This antifreeze faucet discharges the water in the water supply pipe through the antifreeze valve to achieve the antifreeze effect. The setting of the vent valve can effectively balance the air pressure inside and outside the water supply pipe to ensure the smooth discharge of the stored water.

[0031] 2. The linkage rod is used for transmission between the first valve ball and the second valve ball. The linkage rod is set in the linkage channel. The two ends are respectively connected to the first valve ball and the second valve ball through the second straight-line clamping body, which has a stable transmission effect.

[0032] 3. A three-way drainage valve is provided on the upstream side of the faucet body. This structure is close to the faucet body and is easy to operate. It can be used to drain the water in the faucet body and only protect the faucet body from freezing. Moreover, when this structure is operated, the faucet body can be opened at the same time, so that the water stored in the mouth of the faucet body due to atmospheric pressure or viscosity can also be discharged, further improving the antifreeze effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of Example 1 provided by the present utility model;

[0034] Figure 2 This is a structural diagram of the double-row switch valve provided by the utility model;

[0035] Figure 3 This is a cross-sectional schematic diagram of the double-row on-off valve provided by the utility model;

[0036] Figure 4 This is a schematic diagram of the overall structure of Example 2 provided by the present utility model;

[0037] Figure 5 It is a cross-sectional schematic diagram of the drainage three-way valve provided by the utility model.

[0038] In the figure, there are faucet body 1, water supply pipe 2, three-way connecting pipe 21, air inlet 22, second water inlet 23, second water outlet 24, double-row switch valve 3, water valve body 31, first water inlet 32, first water outlet 33, first drain outlet 34, first valve ball 35, vent valve body 36, vent 37, air outlet 38, ventilation pipe 39, second valve ball 40, linkage channel 41, antifreeze valve 42, vent valve 43, rotation drive structure 51, linkage structure 52, first rotating rod 53, first manual operating part 54, linkage rod 55, faucet body antifreeze structure 6, drainage three-way valve 61, third water outlet 62, third water inlet 63, second drain outlet 64, third valve ball 65, second manual operating part 66. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] Example 1

[0041] Specific implementation examples Figure 1-3As shown, the antifreeze faucet includes a faucet body 1, which is connected to the upper end of the water supply pipe 2, and the lower end of the water supply pipe 2 is connected to the water supply source. An antifreeze valve 42 is provided at the lower end of the water supply pipe 2. The antifreeze valve 42 is connected to the water supply source and the water supply pipe 2 respectively to realize the opening and closing between the water supply source and the water supply pipe 2. The antifreeze valve 42 is also provided with a first drain port 34 that can communicate with the water supply pipe 2, and when the water supply source is communicated with the water supply pipe 2, the passage between the water supply pipe 2 and the first drain port 34 is closed, and when the passage between the water supply pipe 2 and the first drain port 34 is opened, the passage between the water supply source and the water supply pipe 2 is opened. Closed; a vent valve 43 is also provided on the water supply pipeline 2, the vent valve 43 includes an air vent 37 and an air outlet 38, the air vent 37 is connected to the outside, and the air outlet 38 is connected to the upper end of the water supply pipeline 2; and when the antifreeze valve 42 is in a state where the first drain port 34 is connected to the water supply pipeline 2 and the water supply source and the water supply pipeline 2 are closed, the vent valve 43 is opened, and the outside air enters the upper end of the water supply pipeline 2 through the vent valve 43 through the air outlet 38, and the stored water in the water supply pipeline 2 can be discharged from the first drain port 34; when the antifreeze valve 42 is in a state where the first drain port 34 is closed and the water supply source and the water supply pipeline 2 are connected, the vent valve 43 is closed.

[0042] Specifically, the antifreeze faucet achieves its antifreeze effect primarily by draining the water stored in the water supply line 2 via the antifreeze valve 42. The antifreeze valve 42 can be switched between a water supply state and an antifreeze state. In the water supply state, the water source is connected to the water supply line 2, the first drain port 34 is closed, and water from the water source is input into the water supply line 2 to supply water to the faucet body 1. In the antifreeze state, the first drain port 34 is opened, while the water source input is closed, and the water stored in the water supply line 2 is discharged from the first drain port 34, preventing the stored water from freezing and increasing in volume, which could cause the line to crack. Furthermore, the provision of the vent valve 43 effectively balances the air pressure inside and outside the water supply line 2, ensuring the smooth discharge of the stored water. When the antifreeze valve 42 is switched to the antifreeze state, the vent valve 43 opens the vent port 37 and the passageway at the upper end of the water supply line 2, allowing outside air to enter. This is used to accommodate the pressure reduction caused by the outflow of stored water in the water supply line 2, ensuring an effective antifreeze effect.

[0043] like Figure 1 、 2As shown in Figures 3 and 4, the antifreeze valve 42 and the vent valve 43 form an integrated double-row on-off valve 3. The double-row on-off valve 3 comprises an integrally connected water flow valve body 31 and a vent valve body 36. The vent valve body 36 has an outlet 38 connected to the water supply line 2 via a vent line 39. The water flow valve body 31 includes a first water outlet 33 connected to the water supply line 2, a first water inlet 32 ​​connected to the water supply source, and a first drain 34 connected to the outside world. A first valve ball 35 is positioned within the water flow valve body 31, defining a water flow passage. The first water outlet 33, first water inlet 32, and first drain 34 are coplanar, forming a T-shaped water flow passage. The vent valve body 36 includes an outlet 38 connected to the vent line 39 and a vent 37 connected to the outside world. A second valve ball 40 is positioned within the vent valve body 36, defining a water flow passage.

[0044] Specifically, the water flow valve body 31 and the vent valve body 36 are integrally formed on the double-row on-off valve 3, providing a high structural strength. The vent pipe 39 is used to accommodate the distance between the vent valve body 36 and the upper end of the water supply pipe 2, ensuring that the air outlet 38 is connected to the upper end of the water supply pipe 2. The water flow valve body 31 is provided with three valve ports, each of which is connected by a water flow channel. The first valve ball 35 is used to control the on-off relationship between the corresponding channels, equivalent to a three-way valve. The first water outlet 33, the first water inlet 32, and the first drain port 34 are arranged in a T-shape, and the rotation axis of the first valve ball 35 is perpendicular to the plane of this arrangement. The vent valve body 36 is provided with an air outlet 38 and an air inlet 22, wherein the air flow channel connects these two valve ports, and the second valve ball 40 is used to control the on-off state between them.

[0045] like Figure 3 As shown, a linkage structure 52 is provided between the antifreeze valve 42 and the vent valve 43. The linkage structure 52 controls the synchronous operation of the antifreeze valve 42 and the vent valve 43. A linkage channel 41 is provided between the water valve body 31 and the vent valve body 36. The linkage structure 52 includes a linkage rod 55 rotatably connected to the linkage channel 41. The ends of the linkage rod 55 respectively engage with the second retaining grooves on the first valve ball 35 and the second valve ball 40 through a second retaining body.

[0046] Specifically, the linkage structure 52 is used to synchronize the states of the antifreeze valve 42 and the vent valve 43, providing convenient operation and improved practicality. The linkage rod 55 is used to transmit power between the first valve ball 35 and the second valve ball 40. The linkage rod 55 is disposed in the linkage channel 41, with its ends engaging the first valve ball 35 and the second valve ball 40, respectively, via a second, straight-lined clamping member, ensuring stable transmission.

[0047] like Figure 2 、 3As shown, a rotation drive structure 51 is provided on the water flow valve body 31 or the ventilation valve body 36. The rotation drive structure 51 includes a first rotation rod 53 rotatably connected to the side of the water flow valve body 31 away from the ventilation valve body 36. The first valve ball 35 and the second valve ball 40 are located on a straight line where the rotation axis of the first rotation rod 53 is located. The inner end of the first rotation rod 53 is provided with a first card body that docks with the first card groove on the first valve ball 35, and the outer end is provided with a first manual operation part 54.

[0048] Specifically, the first rotating rod 53 is rotatably connected to the water valve body 31, and its inner end is engaged with the corresponding first slot on the valve ball through a first I-shaped clamping body to achieve synchronous rotation, and a first manual operating part 54 is provided on the outer end to facilitate rotation by users.

[0049] In this embodiment, a three-way connecting pipe 21 is provided between the water supply pipe and the faucet body 1. The three-way connecting pipe 21 includes an air inlet 22 connected to the ventilation pipe 39, a second water inlet 23 connected to the water supply pipe 2, and a second water outlet 24 connected to the faucet body 1.

[0050] Specific working principle: During normal use, the antifreeze valve 42 is in the water supply state, the first drain port 34 and the first vent port 37 are closed, and the first water inlet 32 ​​and the first water outlet 33 are open. Turning on the faucet allows water to be released, and closing the faucet stops the water release. When antifreeze is needed, the antifreeze valve 42 is switched to the antifreeze state, and the vent valve 43 is switched to the vent state. The first manual operating part 54 is rotated to close the first water inlet 32, open the first drain port 34 and the vent port 37, and the stored water flows out from the first drain port 34 while air is taken in through the vent port 37.

[0051] Example 2

[0052] The specific working principle of this embodiment is basically the same as that of embodiment 1, and the difference lies in the antifreeze structure 6 of the faucet body.

[0053] Specific implementation examples Figure 4 、 5 As shown, a faucet body antifreeze structure 6 is also provided between the faucet body 1 and the water supply pipeline 2. The faucet body antifreeze structure 6 includes a three-way drain valve 61 for draining the water stored in the faucet body 1. The three-way drain valve 61 includes a third water outlet 62 connected to the faucet body 1, a third water inlet 63 connected to the second water outlet 24 of the three-way connecting pipe 22, and a second drain outlet 64 connected to the outside world. A third valve ball 65 is installed in the three-way drain valve 61, which rotates synchronously with the second rotating rod and is used to control the connection between the water supply pipeline 2 and the faucet body 1, or between the faucet body 1 and the second drain outlet 64. The second rotating rod passes through the three-way drain valve 61, and a second manual operating portion 66 is provided at the outer end.

[0054] Specifically, a three-way drain valve 61 is provided on the upstream side of the faucet body 1. This structure is close to the faucet body 1 and is easy to operate. It can be used to drain water stored in the faucet body 1, providing only frost protection for the faucet body 1. Moreover, when this structure is operated, the faucet body 1 can be opened simultaneously, allowing water stored at the mouth of the faucet body 1 due to atmospheric pressure or viscosity to be discharged, further enhancing the anti-freeze effect. The three valve ports of the three-way drain valve 61 are respectively connected to the three-way connecting pipe 21 at the upper end of the water supply line 2, the faucet body 1, and the outside atmosphere. The third valve ball 65 is used to control the communication status between the valve ports. When the faucet body 1 is connected only to the water supply line 2, the three-way drain valve 61 serves as a water guide. When it is connected only to the second drain port 64, it can be used to drain water stored in the faucet. Simultaneously opening the faucet body 1 prevents the problem of this water being unable to be discharged smoothly due to atmospheric pressure. At the same time, it also allows the water stored at the mouth of the faucet body 1 to be discharged, ensuring the drainage and anti-freeze effect of the faucet body 1.

[0055] Detailed working principle: Under normal conditions, the second drain port 64 is closed, and the third water inlet 63 is connected to the faucet body 1, allowing the faucet body 1 to be opened normally for draining water. To prevent freezing and drain the faucet body 1 separately, turn the second manual operating part 66 to close the third water inlet 63, open the second drain port 64, and simultaneously open the faucet body 1. This allows the water inside the faucet body 1 and at the mouth to be drained, achieving an anti-freeze effect.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An antifreeze faucet, comprising a faucet body (1), wherein the faucet body (1) is connected to the upper end of a water supply pipe (2), and the lower end of the water supply pipe (2) is connected to a water supply source, characterized in that: The lower end of the water supply pipe (2) is provided with an antifreeze valve (42), and the antifreeze valve (42) is connected to the water supply source and the water supply pipe (2) respectively to realize opening and closing between the water supply source and the water supply pipe (2). The antifreeze valve (42) is also provided with a first drain port (34) that can communicate with the water supply pipe (2), and when the water supply source is communicated with the water supply pipe (2), the passage between the water supply pipe (2) and the first drain port (34) is closed, and when the passage between the water supply pipe (2) and the first drain port (34) is opened, the passage between the water supply source and the water supply pipe (2) is closed. The water supply pipe (2) is further provided with a vent valve (43), the vent valve (43) comprising a vent (37) and an air outlet (38), the vent (37) communicating with the outside, and the air outlet (38) communicating with the upper end of the water supply pipe (2); When the antifreeze valve (42) is in a state where the first drain port (34) is in communication with the water supply pipe (2) and the water supply source and the water supply pipe (2) are closed, the vent valve (43) is opened, and outside air enters the upper end of the water supply pipe (2) through the vent valve (43) via the air outlet (38), and the water in the water supply pipe (2) can be discharged from the first drain port (34); when the antifreeze valve (42) is in a state where the first drain port (34) is closed and the water supply source and the water supply pipe (2) are in communication, the vent valve (43) is closed.

2. The antifreeze faucet according to claim 1, characterized in that: A linkage structure (52) is provided between the antifreeze valve (42) and the ventilation valve (43), and the linkage structure (52) controls the synchronous movement of the antifreeze valve (42) and the ventilation valve (43).

3. The antifreeze faucet according to claim 2, characterized in that: The antifreeze valve (42) and the vent valve (43) are a double-row on-off valve (3) arranged in an integrated structure. The double-row on-off valve (3) includes a water valve body (31) and a vent valve body (36) connected in an integrated manner. The air outlet (38) of the vent valve body (36) is connected to the water supply pipeline (2) via a vent pipeline (39).

4. The antifreeze faucet according to claim 3, characterized in that: The water flow valve body (31) comprises a first water outlet (33) connected to the water supply pipeline (2), a first water inlet (32) connected to the water supply source, and a first drain outlet (34) communicating with the outside. A first valve ball (35) is provided in the water flow valve body (31), and a water flow channel is provided on the first valve ball (35).

5. The antifreeze faucet according to claim 3, characterized in that: The vent valve body (36) includes an air outlet (38) connected to the vent pipe (39) and a vent (37) connected to the outside. A second valve ball (40) is provided in the vent valve body (36), and an air passage is provided on the second valve ball (40).

6. The antifreeze faucet according to claim 4 or 5, characterized in that: A linkage channel (41) is provided between the water valve body (31) and the vent valve body (36). The linkage structure (52) includes a linkage rod (55) rotatably connected to the linkage channel (41). Both ends of the linkage rod (55) are respectively engaged with the second clamping grooves on the first valve ball (35) and the second valve ball (40) through the second clamping body.

7. The antifreeze faucet according to claim 4, characterized in that: The water flow valve body (31) or the ventilation valve body (36) is provided with a rotation drive structure (51), and the rotation drive structure (51) includes a first rotation rod (53) which is arranged on the side of the water flow valve body (31) away from the ventilation valve body (36) or the side of the ventilation valve body (36) away from the water flow valve body (31), and the first valve ball (35) and the second valve ball (40) are located on a straight line where the rotation axis of the first rotation rod (53) is located, and the inner end of the first rotation rod (53) is provided with a first card body which is docked with the first card groove on the first valve ball (35) or the second valve ball (40), and the outer end is provided with a first manual operation part (54), or is connected to the first rotation drive component in a transmission manner.

8. The antifreeze faucet according to any one of claims 1 to 5, characterized in that: A three-way connecting pipe (21) is provided between the water supply pipe (2) and the faucet body (1), and the three-way connecting pipe (21) includes an air inlet (22) connected to the vent valve (43), a second water inlet (23) connected to the water supply pipe (2), and a second water outlet (24) connected to the faucet body (1).

9. The antifreeze faucet according to any one of claims 1 to 5, characterized in that: A faucet body antifreeze structure (6) is further provided between the faucet body (1) and the water supply pipe (2). The faucet body antifreeze structure (6) includes a drainage three-way valve (61) for draining the water stored in the faucet body (1).

10. The antifreeze faucet according to claim 9, characterized in that: The drainage three-way valve (61) comprises a third water outlet (62) connected to the faucet body (1), a third water inlet (63) connected to the water supply pipe (2), and a second drainage port (64) connected to the outside. The drainage three-way valve (61) is provided with a third valve ball (65) that rotates synchronously with the second rotating rod and is used to control the communication between the water supply pipe (2) and the faucet body (1), or the communication between the faucet body (1) and the second drainage port (64). The second rotating rod passes through the drainage three-way valve (61), and the outer end is provided with a second manual operating part (66), or is connected to the second rotating drive assembly.

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