Anti-freezing faucet

Abstract

The invention belongs to the technical field of faucets, particularly relates to an anti-freezing faucet, and 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 invention belongs to the technical field of faucets, and in particular relates 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 antifreeze structure of the water supply pipeline and the faucet is mostly achieved by setting a drain valve. When the drain valve is opened, the water in the water supply pipeline and the faucet is discharged, which can prevent the water from freezing and damaging the pipeline 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 smoothly and quickly. The water may be "trapped" in the pipe and may still freeze, and the antifreeze effect cannot be guaranteed. Summary of the invention

[0005] The purpose of the present invention is to provide an antifreeze faucet in view of the above problems existing in the prior art.

[0006] In order to achieve the purpose of the invention, the following technical solutions can be used: An antifreeze faucet comprises 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 arranged at the lower end of the water supply pipeline, the antifreeze valve is respectively connected to the water supply source and the water supply pipeline 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; the water supply pipeline is also provided with a vent valve, the vent valve includes a 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.

[0007] The antifreeze faucet of the present invention achieves the antifreeze effect mainly by discharging the stored water 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 stored water in the water supply pipeline is discharged from the first drain port to prevent the stored water from freezing and causing the volume to increase and the pipeline to freeze and crack. In addition, the setting of the vent valve can effectively balance the air pressure inside and outside the water supply pipeline to ensure 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, so that the outside air can 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.

[0008] 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 antifreeze valve and the vent valve to move synchronously.

[0009] The linkage structure is used to realize the synchronous switching of the states of the antifreeze valve and the ventilation valve, which is convenient to operate and improves practicality. The linkage can be realized by a solenoid valve with associated actions or a corresponding mechanical structure.

[0010] In the above-mentioned antifreeze faucet, the antifreeze valve and the vent valve are double-row switch valves arranged in an integrated structure, and the double-row switch valve includes a water valve body and a vent valve body connected in one piece, and the air outlet of the vent valve body is connected to the water supply pipeline through a vent pipeline.

[0011] The water valve body and the vent valve body are integrally formed on the double-row switch valve, with high structural strength. The vent pipeline is used to adapt to the distance between the vent valve body and the upper end of the water supply pipeline to ensure that the air outlet is connected to the upper end of the water supply pipeline.

[0012] 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 arranged in the water flow valve body, and a water flow channel is opened on the first valve ball.

[0013] The water valve body is provided with three valve ports, each valve port is connected by a water passage, and the first valve ball is used to control the on-off relationship between the corresponding channels, which is equivalent to a three-way valve.

[0014] 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.

[0015] The first water outlet, the first water inlet and the first water drain are arranged in a T shape, and the rotation axis of the first valve ball is perpendicular to the arrangement plane.

[0016] In the above-mentioned antifreeze faucet, the vent valve body includes an outlet connected to the vent pipeline and a vent connected to the outside, a second valve ball is arranged in the vent valve body, and an air passage is provided on the second valve ball.

[0017] 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 therebetween.

[0018] In the above-mentioned antifreeze faucet, a linkage channel is provided between the water valve body and the ventilation valve body, and the linkage structure includes a linkage rod rotatably connected in the linkage channel, and 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.

[0019] 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. Both ends of the linkage rod are respectively connected with the first valve ball and the second valve ball through a second straight-lined clamp body, thereby achieving a stable transmission effect.

[0020] 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, and the inner end of the first rotating rod is provided with a first card body that docks and cooperates 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.

[0021] 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-lined card body to achieve synchronous rotation. A first manual operating part is provided at the outer end to facilitate rotation by users. 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.

[0022] 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 ventilation valve, a second water inlet connected to the water supply pipeline, and a second water outlet connected to the faucet body.

[0023] 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.

[0024] In the above-mentioned antifreeze faucet, a faucet body antifreeze structure is also provided between the faucet body and the water supply pipeline, and the faucet body antifreeze structure includes a drainage three-way valve for draining the water stored in the faucet body.

[0025] A drainage three-way 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 discharge 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.

[0026] 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 pipeline, and a second drainage 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 pipeline and the faucet body, or to control the connection between the faucet body and the second drainage outlet. The second rotating rod passes through the drainage three-way valve, and a second manual operating part is provided at the outer end, or it is transmission-connected to the second rotating drive assembly.

[0027] The three valve ports of the drainage three-way valve are respectively connected to the water supply pipeline, the faucet body and the outside atmosphere. The third valve ball is used to control the connection status between the valve ports. When the faucet body is only connected to the water supply pipeline, the drainage three-way valve is used to realize the water conduction between them. When it is only connected to the second drainage port, it can be used to discharge the water in the faucet. The faucet body is opened synchronously to prevent the water from being affected by the atmospheric pressure and unable to be discharged smoothly. At the same time, the water in the mouth of the faucet body is also discharged to ensure the drainage and antifreeze effect of the faucet body. In order to realize the function of automatically controlling the second rotating rod, the second linkage rod can also be connected to the second rotating drive component of the motor to realize electric control.

[0028] Compared with the prior art, the present invention mainly has the following advantages: 1. This antifreeze faucet discharges the stored water in the water supply pipeline 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 pipeline to ensure the smooth discharge of the stored water.

[0029] 2. 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. Both ends of the linkage rod are respectively connected with the first valve ball and the second valve ball through a second straight-lined clamp body, thereby achieving a stable transmission effect.

[0030] 3. A drainage three-way 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 discharge 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

[0031] Figure 1It is a schematic diagram of the overall structure of Example 1 provided by the present invention; Figure 2 It is a structural schematic diagram of the double-row switch valve provided by the present invention; Figure 3 is a cross-sectional schematic diagram of a double-row switch valve provided by the present invention; Figure 4 is a schematic diagram of the overall structure of Example 2 provided by the present invention; Figure 5 It is a cross-sectional schematic diagram of the drainage three-way valve provided by the present invention.

[0032] In the figure, there are a faucet body 1, a water supply pipeline 2, a three-way connecting pipe 21, an air inlet 22, a second water inlet 23, a second water outlet 24, a double-row switch valve 3, a water valve body 31, a first water inlet 32, a first water outlet 33, a first drain 34, a first valve ball 35, a vent valve body 36, a vent 37, an air outlet 38, a vent pipeline 39, a second valve ball 40, a linkage channel 41, an antifreeze valve 42, a vent valve 43, a rotation drive structure 51, a linkage structure 52, a first rotation rod 53, a first manual operating part 54, a linkage rod 55, a faucet body antifreeze structure 6, a drainage three-way valve 61, a third water outlet 62, a third water inlet 63, a second drain 64, a third valve ball 65, and a second manual operating part 66. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1 Specific implementation examples Figure 1-3As shown, the antifreeze faucet includes a faucet body 1, which is connected to the upper end of a water supply pipeline 2, and the lower end of the water supply pipeline 2 is connected to a water supply source. An antifreeze valve 42 is provided at the lower end of the water supply pipeline 2, and the antifreeze valve 42 is respectively connected to the water supply source and the water supply pipeline 2 to realize the opening and closing between the water supply source and the water supply pipeline 2. The antifreeze valve 42 is also provided with a first drain port 34 that can communicate with the water supply pipeline 2, and when the water supply source is communicated with the water supply pipeline 2, the passage between the water supply pipeline 2 and the first drain port 34 is closed, and when the passage between the water supply pipeline 2 and the first drain port 34 is opened, the passage between the water supply source and the water supply pipeline 2 is closed. Closed; the water supply pipeline 2 is also provided with a vent valve 43, the vent valve 43 includes a vent port 37 and an air outlet 38, the vent port 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.

[0035] Specifically, the antifreeze faucet mainly discharges the water in the water supply pipeline 2 through the antifreeze valve 42 to achieve the antifreeze effect. The antifreeze valve 42 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 2 are connected, the first drain port 34 is closed, and the water from the water supply source is input into the water supply pipeline 2 to supply water to the faucet body 1. In the antifreeze state, the first drain port 34 is opened, and the input of the water supply source is closed, and the water in the water supply pipeline 2 is discharged from the first drain port 34 to prevent the water from freezing and causing the volume to increase and the pipeline to freeze. In addition, the setting of the vent valve 43 can effectively balance the air pressure inside and outside the water supply pipeline 2 to ensure the smooth discharge of the water. When the antifreeze valve 42 is switched to the antifreeze state, the vent valve 43 opens the vent port 37 and the channel at the upper end of the water supply pipeline 2, so that the outside air can enter, which is used to adapt to the pressure reduction phenomenon caused by the outflow of the water in the water supply pipeline 2, thereby ensuring an effective antifreeze effect.

[0036] like Figure 1 , 2As shown in Figure 3, the antifreeze valve 42 and the vent valve 43 are a double-row switch valve 3 set in an integrated structure. The double-row switch valve 3 includes a water-passing valve body 31 and a vent valve body 36 connected in an integral manner. The air outlet 38 of the vent valve body 36 is connected to the water supply pipeline 2 through a vent pipe 39. The water-passing valve body 31 includes 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 34 connected to the outside. A first valve ball 35 is arranged in the water-passing valve body 31, and a water-passing channel is provided on the first valve ball 35. The first water outlet 33, the first water inlet 32 ​​and the first drain 34 are located on the same plane, and the water-passing channel is T-shaped. The vent valve body 36 includes an air outlet 38 connected to the vent pipe 39 and an air vent 37 connected to the outside. A second valve ball 40 is arranged in the vent valve body 36, and a water-passing channel is provided on the second valve ball 40.

[0037] Specifically, the water-passing valve body 31 and the vent valve body 36 are integrally formed on the double-row switch valve 3, and the structural strength is high. The vent pipe 39 is used to adapt to the distance between the vent valve body 36 and the upper end of the water supply pipe 2, and ensure that the air outlet 38 is connected to the upper end of the water supply pipe 2. The water-passing valve body 31 is provided with three valve ports, and the valve ports are connected by a water-passing channel. The first valve ball 35 is used to control the on-off relationship between the corresponding channels, which is 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 arrangement plane. The vent valve body 36 is provided with an air outlet 38 and an air inlet 22, wherein the air-passing channel connects the two valve ports, and the second valve ball 40 is used to control the on-off state between them.

[0038] like Figure 3 As shown, a linkage structure 52 is provided between the antifreeze valve 42 and the vent valve 43, and the linkage structure 52 controls the synchronous action 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, and the linkage structure 52 includes a linkage rod 55 rotatably connected in the linkage channel 41, and both ends of the linkage rod 55 are respectively docked with the second card grooves on the first valve ball 35 and the second valve ball 40 through the second card body.

[0039] Specifically, the linkage structure 52 is used to achieve synchronous switching of the states of the antifreeze valve 42 and the ventilation valve 43, which is convenient to operate and improves practicality. The linkage rod 55 is used for transmission between the first valve ball 35 and the second valve ball 40. The linkage rod 55 is arranged in the linkage channel 41, and its two ends are respectively connected to the first valve ball 35 and the second valve ball 40 through a second straight-lined clamp body, which has a stable transmission effect.

[0040] like Figure 2 , 3As shown, a rotation drive structure 51 is provided on the water valve body 31 or the ventilation valve body 36, and the rotation drive structure 51 includes a first rotation rod 53 rotatably connected to the side of the water 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 operating part 54.

[0041] 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 straight-lined clamp body to achieve synchronous rotation, and a first manual operating part 54 is provided at the outer end to facilitate rotation by users.

[0042] In this embodiment, a three-way connecting pipe 21 is provided between the water supply pipeline and the faucet body 1, and the three-way connecting pipe 21 includes an air inlet 22 connected to the ventilation pipeline 39, a second water inlet 23 connected to the water supply pipeline 2, and a second water outlet 24 connected to the faucet body 1.

[0043] 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, the first water inlet 32 ​​and the first water outlet 33 are opened, and the water can be drained by turning on the tap, and the draining of water stops when the tap is closed. When antifreeze is needed, the antifreeze valve 42 is switched to the antifreeze state, the vent valve 43 is switched to the vent state, the first manual operating part 54 is turned, the first water inlet 32 ​​is closed, the first drain port 34 and the vent port 37 are opened, and the internal water flows out from the first drain port 34, while the vent port 37 takes in air.

[0044] Example 2 The specific working principle of this embodiment is basically the same as that of Embodiment 1, except that the difference lies in the faucet body antifreeze structure 6 .

[0045] Specific implementation examples Figure 4 , 5 As shown, a faucet body antifreeze structure 6 is further provided between the faucet body 1 and the water supply pipeline 2, and the faucet body antifreeze structure 6 includes a drainage three-way valve 61 for draining the water in the faucet body 1. The drainage three-way 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 drainage outlet 64 connected to the outside. A third valve ball 65 is provided in the drainage three-way 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 the connection between the faucet body 1 and the second drainage outlet 64. The second rotating rod is penetrated by the drainage three-way valve 61, and a second manual operating part 66 is provided at the outer end.

[0046] Specifically, a drainage three-way 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 discharge the water in the faucet body 1, and only the faucet body 1 is protected from freezing. Moreover, when the structure is operated, the faucet body 1 can be opened at the same time, so that the water generated by the atmospheric pressure or viscosity at the mouth of the faucet body 1 is also discharged, further improving the antifreeze effect. The three valve ports of the drainage three-way valve 61 are respectively connected to the three-way connecting pipe 21 at the upper end of the water supply pipeline 2, the faucet body 1 and the outside atmosphere. The third valve ball 65 is used to control the connection state between the valve ports. When the faucet body 1 is only connected to the water supply pipeline 2, the drainage three-way valve 61 plays a water guiding role. When it is only connected to the second drainage port 64, it can be used to discharge the water in the faucet. The faucet body 1 is opened synchronously to prevent the problem that the water cannot be discharged smoothly due to the influence of atmospheric pressure. At the same time, the water at the mouth of the faucet body 1 is also discharged, ensuring the drainage and antifreeze effect of the faucet body 1.

[0047] Specific working principle: Under normal conditions, the second drain port 64 is closed, the third water inlet 63 is connected to the faucet body 1, and the faucet body 1 can be opened normally to drain water. When the faucet body 1 needs to be drained for antifreeze, the second manual operating part 66 is turned to close the third water inlet 63, open the second drain port 64, and open the faucet body 1 at the same time. At this time, the water in the faucet body 1 and the mouth can be drained, achieving an antifreeze effect.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed 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 pipeline (2), and the lower end of the water supply pipeline (2) is connected to a water supply source, characterized in that: An antifreeze valve (42) is provided at the lower end of the water supply pipeline (2). The antifreeze valve (42) is connected to the water supply source and the water supply pipeline (2) respectively to realize opening and closing between the water supply source and the water supply pipeline (2). The antifreeze valve (42) is also provided with a first drain port (34) which can communicate with the water supply pipeline (2). When the water supply source is in communication with the water supply pipeline (2), the passage between the water supply pipeline (2) and the first drain port (34) is closed. When the passage between the water supply pipeline (2) and the first drain port (34) is opened, the passage between the water supply source and the water supply pipeline (2) is closed. The water supply pipeline (2) is also provided with a vent valve (43), the vent valve (43) comprising a vent port (37) and an air outlet (38), the vent port (37) being in communication with the outside, and the air outlet (38) being in communication with the upper end of the water supply pipeline (2); When the antifreeze valve (42) is in a state where the first drain port (34) is in communication with 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 outside air enters the upper end of the water supply pipeline (2) through the vent valve (43) via the air outlet (38), and the 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 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 antifreeze valve (42) and the ventilation valve (43) to move synchronously.

3. The antifreeze faucet according to claim 2, characterized in that: The antifreeze valve (42) and the ventilation valve (43) are double-row switch valves (3) arranged in an integrated structure. The double-row switch valve (3) comprises a water valve body (31) and a ventilation valve body (36) which are integrally connected. The air outlet (38) of the ventilation valve body (36) is connected to the water supply pipeline (2) via a ventilation 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 water outlet (34) connected to 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) comprises an air outlet (38) connected to a vent pipe (39) and a vent (37) connected to the outside. A second valve ball (40) is arranged in the vent valve body (36), and a vent 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-passing valve body (31) and the ventilation valve body (36), and the linkage structure (52) comprises a linkage rod (55) rotatably connected to the linkage channel (41), and two ends of the linkage rod (55) are respectively engaged with second clamping grooves on the first valve ball (35) and the second valve ball (40) through a second clamping body.

7. The antifreeze faucet according to claim 4 or 5, characterized in that: The water-passing valve body (31) or the ventilation valve body (36) is provided with a rotation drive structure (51), and the rotation drive structure (51) comprises a first rotation rod (53) which is arranged on a side of the water-passing valve body (31) away from the ventilation valve body (36) or a side of the ventilation valve body (36) away from the water-passing 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 a 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 operating 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 pipeline (2) and the faucet body (1), and the three-way connecting pipe (21) comprises an air inlet (22) connected to the ventilation valve (43), a second water inlet (23) connected to the water supply pipeline (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 also provided between the faucet body (1) and the water supply pipeline (2), and the faucet body antifreeze structure (6) comprises 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 pipeline (2), and a second drainage outlet (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 connection between the water supply pipeline (2) and the faucet body (1), or to control the connection between the faucet body (1) and the second drainage outlet (64). The second rotating rod passes through the drainage three-way valve (61), and a second manual operating part (66) is provided at the outer end, or is connected to the second rotating drive assembly in a transmission manner.

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