Anti-freezing drainage device

Abstract

The utility model provides an anti-freezing drainage device which comprises a valve body structure provided with a water inlet, a containing cavity, a first channel and a second channel, the bottom of the containing cavity is provided with a first water outlet and a second water outlet, and the containing cavity is communicated with the water inlet, the first water outlet and the second water outlet; the reversing structure is rotatably arranged on the valve body structure, can block or disconnect the first channel and the second channel, and is used for communicating the accommodating cavity with the first channel or the second channel; the frost valve is provided with a valve cavity and a valve port which are communicated with each other, one end of the valve cavity is communicated with the second channel, and the valve port is located at the other end of the valve cavity; when the reversing structure opens the first channel, liquid in the containing cavity flows into the first channel through the first water outlet. When the reversing structure opens the second channel, liquid in the containing cavity flows into the valve cavity through the second water outlet and the second channel. By means of the technical scheme, the problem that in the prior art, an anti-freezing and drainage structure in a water using system is complex can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of antifreeze drainage devices, in particular to an antifreeze drainage device. Background Art

[0002] At present, antifreeze valves are widely used in various water systems to prevent the system pipes from freezing and cracking during winter operation. However, the antifreeze valve can usually only automatically open the valve when the temperature is low to discharge the low-temperature liquid in the system pipes, thereby achieving the purpose of antifreeze. However, when the water system is not used for a long time, it is also necessary to discharge the liquid in the system pipes. When the liquid temperature is not low enough, the antifreeze valve cannot be opened. Therefore, it is necessary to reset the branch in the water system and then set a drain valve on the branch. With this setting, the antifreeze and drainage structure in the water system is relatively complicated, and it is not convenient to assemble the antifreeze and drainage structure. Utility Model Content

[0003] The utility model provides an antifreeze drainage device to solve the problem of relatively complicated antifreeze and drainage structures in a water system in the prior art.

[0004] The utility model provides an antifreeze drainage device, which comprises: a valve body structure, the valve body structure having a water inlet, a accommodating chamber, and a first channel and a second channel which are independent of each other, and a first water outlet and a second water outlet are arranged at the bottom of the accommodating chamber, and the accommodating chamber is communicated with the water inlet, the first water outlet and the second water outlet; a reversing structure, which is rotatably arranged on the valve body structure, the reversing structure can block or open the first channel and the second channel, and the reversing structure is used to make the accommodating chamber communicate with the first channel or the second channel; an antifreeze valve, the antifreeze valve having a valve chamber and a valve port which are communicated with each other, one end of the valve chamber is communicated with the second channel, and the valve port is located at the other end of the valve chamber; when the reversing structure opens the first channel, the liquid in the accommodating chamber flows into the first channel through the first water outlet; when the reversing structure opens the second channel, the liquid in the accommodating chamber flows into the valve chamber through the second water outlet and the second channel.

[0005] Furthermore, the reversing structure comprises a reversing disc, which is rotatably arranged in the accommodating cavity. A communication port is arranged on the reversing disc, and the reversing disc rotates to make the communication port communicate with the first channel or the second channel.

[0006] Furthermore, a through hole is provided on the valve body structure, one end of which is communicated with the accommodating cavity, and the reversing structure also includes an operating part, which is penetrated in the through hole, and one end of which is connected to the reversing disk.

[0007] Furthermore, the valve body structure includes: a main valve body, having a accommodating cavity, a first channel, a second channel and a through hole; an upper valve body, having a water inlet, the upper valve body is detachably arranged in the accommodating cavity, the reversing disc is arranged between the main valve body and the upper valve body, and the upper valve body is used to communicate with the system pipeline.

[0008] Furthermore, the reversing disc abuts against the bottom surface of the accommodating chamber, the water inlet of the upper valve body is arranged corresponding to the first water outlet and the second water outlet, and the valve body structure also includes a first elastic member, which is arranged between the upper valve body and the reversing disc, one end of the first elastic member abuts against the upper valve body, and the other end of the first elastic member abuts against the reversing disc.

[0009] Furthermore, the curvature between the first water outlet and the second water outlet is greater than the curvature of the connecting port.

[0010] Furthermore, the flow area of ​​the communication port is larger than the flow area of ​​any one of the first water outlet and the second water outlet.

[0011] Furthermore, the antifreeze valve includes a valve seat, a valve core structure and a temperature bag structure. The valve seat has a valve cavity and a valve port that are interconnected. The valve core structure and the temperature bag structure are arranged in the valve cavity. The temperature bag structure is drivingly connected to the valve core structure. The temperature bag structure is affected by temperature and can drive the valve core structure to block and open the valve port.

[0012] Furthermore, the operating part includes: a connecting rod, one end of which is connected to the reversing disc, and the other end of the connecting rod extends to the other end of the through hole; and an operating rod detachably connected to the other end of the connecting rod.

[0013] Furthermore, the through hole and the connecting rod are clearance-matched, and a first sealing ring is provided between the through hole and the connecting rod.

[0014] Furthermore, a second sealing ring and a third sealing ring are provided between the reversing disc and the bottom surface of the accommodating cavity, the second sealing ring is arranged between the first water outlet and the second water outlet, and the through hole is located in the second sealing ring, and the first water outlet and the second water outlet are located in the third sealing ring.

[0015] By applying the technical solution of the utility model, the reversing structure can be rotatably arranged on the valve body structure, and during the rotation of the reversing structure, the reversing structure can block or open the first channel and the second channel, and the reversing structure can make the accommodating chamber communicate with the first channel or the second channel respectively through the first water outlet and the second water outlet, and the valve chamber of the antifreeze valve communicates with the second channel. With such a configuration, the structure is simple and convenient for processing the main valve body. Among them, when the temperature is low, the valve chamber is communicated with the valve port, the accommodating chamber is communicated with the second channel, and the accommodating chamber is disconnected from the first channel, thereby completing the discharge of the low-temperature liquid. When the temperature is high and the liquid needs to be discharged, the valve chamber is disconnected from the valve port, and the staff can rotate the reversing structure so that the accommodating chamber is communicated with the first channel, and the accommodating chamber is disconnected from the second channel, so that the liquid is discharged from the first channel. With the above structure, when the staff installs the antifreeze and drainage structure in the water system, they only need to connect the antifreeze drainage device to the system pipeline. The structure is simple, which is convenient for assembling the antifreeze drainage device and convenient for the staff to operate. They only need to rotate the reversing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram showing the structure of the accommodating chamber of the antifreeze drainage device provided by the utility model being connected to the second channel;

[0018] Figure 2 A schematic diagram showing the structure of the accommodating chamber of the antifreeze drainage device provided by the utility model being connected to the first channel;

[0019] Figure 3 The structure diagram of the antifreeze drainage device provided by the utility model is shown;

[0020] Figure 4 The structure diagram of the main valve body provided by the utility model is shown;

[0021] Figure 5 A top view of the main valve body provided by the utility model is shown;

[0022] Figure 6 The utility model shows a schematic structural diagram of the matching of the reversing disc and the connecting rod.

[0023] The above drawings include the following reference numerals:

[0024] 10. Valve body structure;

[0025] 11. main valve body; 111. accommodating chamber; 112. first channel; 113. second channel; 114. through hole; 115. first water outlet; 116. second water outlet;

[0026] 12. upper valve body; 121. water inlet; 13. first elastic member;

[0027] 20. Reversing structure; 21. Reversing plate; 211. Connecting port; 22. Connecting rod; 23. Operating rod;

[0028] 30. Antifreeze valve; 31. Valve seat; 32. Valve core structure; 33. Temperature package structure; 34. Second elastic member; 35. Third elastic member;

[0029] 41. First sealing ring; 42. Second sealing ring; 43. Third sealing ring; 44. Fourth sealing ring; 45. Fifth sealing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] like Figures 1 to 6As shown, an embodiment of the utility model provides an antifreeze drainage device, which includes a valve body structure 10, a reversing structure 20 and an antifreeze valve 30. The valve body structure 10 has a water inlet 121, a receiving chamber 111, and a first channel 112 and a second channel 113 that are independent of each other, and a first water outlet 115 and a second water outlet 116 are arranged at the bottom of the receiving chamber 111, and the receiving chamber 111 is connected with the water inlet 121, the first water outlet 115 and the second water outlet 116. The reversing structure 20 is rotatably arranged on the valve body structure 10, and the reversing structure 20 can block or open the first channel 112 and the second channel 113, and the reversing structure 20 is used to make the receiving chamber 111 communicate with the first channel 112 or the second channel 113. The antifreeze valve 30 has a valve cavity and a valve port that are connected with each other, one end of the valve cavity is connected with the second channel 113, and the valve port is located at the other end of the valve cavity. When the reversing structure 20 opens the first channel 112, the liquid in the accommodating chamber 111 flows into the first channel 112 through the first water outlet 115; when the reversing structure 20 opens the second channel 113, the liquid in the accommodating chamber 111 flows into the valve chamber through the second water outlet 116 and the second channel 113. That is, in the present application, the first water outlet 115 is connected to the first channel 112, and the second water outlet 116 is connected to the second channel 113. Figure 1 As shown, the accommodating cavity 111 is connected to the second channel 113. Figure 2 As shown, the accommodating chamber 111 is in communication with the first channel 112 .

[0032] By applying the technical solution of the present application, the reversing structure 20 is rotatably arranged on the valve body structure 10, and during the rotation of the reversing structure 20, the reversing structure 20 can block or open the first channel 112 and the second channel 113, and the reversing structure 20 can make the accommodating chamber 111 communicate with the first channel 112 or the second channel 113 through the first water outlet 115 and the second water outlet 116 respectively, and the valve chamber of the antifreeze valve 30 communicates with the second channel 113. Such a configuration has a simple structure and is convenient for processing the main valve body 11. Among them, when the temperature is low, the valve chamber is communicated with the valve port, the accommodating chamber 111 is communicated with the second channel 113, and the accommodating chamber 111 is disconnected from the first channel 112, thereby completing the discharge of the low-temperature liquid. When the temperature is high and the liquid needs to be discharged, the valve cavity and the valve port are disconnected, and the staff can rotate the reversing structure 20, so that the accommodating cavity 111 is connected to the first channel 112, and the accommodating cavity 111 is disconnected from the second channel 113, so that the liquid is discharged from the first channel 112. With the above structure, when the staff installs the antifreeze and drainage structure in the water system, they only need to connect the antifreeze drainage device to the system pipeline. The structure is simple, which is convenient for assembling the antifreeze drainage device and convenient for the staff to operate. They only need to rotate the reversing structure 20.

[0033] In general, the accommodating chamber 111 is communicated with the second channel 113 , and only in special circumstances such as when the water system is not used for a long time, the accommodating chamber 111 is communicated with the first channel 112 .

[0034] Specifically, the antifreeze valve 30 further includes a second elastic member 34 and a third elastic member 35. The second elastic member 34 is arranged at one end of the temperature bag structure 33 away from the valve port, one end of the second elastic member 34 abuts against the end face of the valve cavity away from the valve port, and the other end of the second elastic member 34 abuts against the temperature bag structure 33. The second elastic member 34 can apply pressure to the temperature bag structure 33, so that the temperature bag structure 33 abuts against the valve core structure 32, and the valve core structure 32 can block the valve port. The third elastic member 35 is arranged at one end of the temperature bag structure 33 close to the valve port, one end of the third elastic member 35 abuts against the valve core structure 32, and the other end of the third elastic member 35 abuts against the end face of the valve cavity with the valve port, and the third elastic member 35 can apply pressure to the valve core structure 32, so that the valve core structure 32 opens the valve port. Among them, the staff can select the second elastic member 34 and the third elastic member 35 with different elastic coefficients according to the needs, and the second elastic member 34 and the third elastic member 35 are both springs.

[0035] Furthermore, a fifth sealing ring 45 is disposed between the valve seat 31 and the second channel 113 . This arrangement can prevent the liquid from leaking from the second channel 113 .

[0036] like Figure 6 As shown, the reversing structure 20 includes a reversing disc 21, which is rotatably arranged in the accommodating chamber 111. A connecting port 211 is arranged on the reversing disc 21, and the reversing disc 21 rotates to connect the connecting port 211 with the first channel 112 or the second channel 113. With such a configuration, the structure is simple, and it is convenient to process the reversing disc 21 and to assemble it. When the connecting port 211 is connected to the first channel 112, the second channel 113 is completely disconnected from the accommodating chamber 111, and when the connecting port 211 is connected to the second channel 113, the first channel 112 is completely disconnected from the accommodating chamber 111. That is, in the present application, the reversing disc 21 can block the first channel 112 and the second channel 113 respectively by blocking the first water outlet 115 and the second water outlet 116.

[0037] like Figure 4 As shown, the valve body structure 10 is provided with a through hole 114, one end of which is communicated with the accommodating chamber 111, and the reversing structure 20 further includes an operating portion, which is passed through the through hole 114, and one end of which is connected to the reversing disc 21. Such a configuration facilitates the assembly of the reversing structure 20 and the valve body structure 10, and the staff can realize the rotation of the reversing disc 21 by operating the operating portion, which is convenient for the staff to operate.

[0038] The valve body structure 10 includes a main valve body 11 and an upper valve body 12. The main valve body 11 has a receiving chamber 111, a first channel 112, a second channel 113 and a through hole 114. The upper valve body 12 has a water inlet 121, and the upper valve body 12 is detachably arranged in the receiving chamber 111. The reversing disc 21 is arranged between the main valve body 11 and the upper valve body 12, and the upper valve body 12 is used to communicate with the system pipeline. Such an arrangement facilitates the installation of the reversing disc 21 and facilitates the communication of the valve body structure 10 with the system pipeline. In the present application, the upper valve body 12 is threadedly connected to the main valve body 11. In addition, a fourth sealing ring 44 is arranged between the upper valve body 12 and the main valve body 11. Such an arrangement can avoid liquid leakage.

[0039] Furthermore, the water inlet 121 includes a first step hole and a second step hole which are interconnected. The second step hole is arranged at one end of the first step hole close to the reversing disc 21. The flow area of ​​the second step hole gradually increases in the direction close to the reversing disc 21. Such a setting can reduce the flow rate of the liquid and mitigate the impact of the liquid on the reversing disc 21.

[0040] Specifically, the reversing disc 21 abuts against the bottom surface of the accommodating cavity 111, and the water inlet 121 of the upper valve body 12 is arranged corresponding to the first water outlet 115 and the second water outlet 116. The valve body structure 10 also includes a first elastic member 13, which is arranged between the upper valve body 12 and the reversing disc 21, one end of the first elastic member 13 abuts against the upper valve body 12, and the other end of the first elastic member 13 abuts against the reversing disc 21. In this way, the first elastic member 13 can apply pressure to the reversing disc 21 to prevent the reversing disc 21 from falling out of the accommodating cavity 111. In addition, there is no need for contact between the upper valve body 12 and the reversing disc 21, so that the reversing disc 21 can rotate easily.

[0041] The outer side wall of the upper valve body 12 has a first step section and a second step section connected to each other, the second step section is arranged on the side of the first step section close to the reversing disc 21, the outer diameter of the first step section is larger than the outer diameter of the second step section, there is a step surface between the first step section and the second step section, the first elastic member 13 is a spring, the first elastic member 13 is sleeved on the second step section, one end of the first elastic member 13 abuts against the step surface, and the other end of the first elastic member 13 abuts against the reversing disc 21. Such a configuration facilitates the assembly of the first elastic member 13 and prevents the first elastic member 13 from falling off.

[0042] Furthermore, the curvature between the first water outlet 115 and the second water outlet 116 is greater than the curvature of the connecting port 211. With such an arrangement, it is possible to prevent the connecting port 211 from being connected to the first water outlet 115 and the second water outlet 116 at the same time. By adjusting the overlapping area between the connecting port 211 and the first water outlet 115 or the second water outlet 116, the liquid flow in the first channel 112 and the second through hole 114 can be controlled. The first water outlet 115, the second water outlet 116 and the connecting port 211 are all arc-shaped structures, and with such an arrangement, it is convenient to process the first water outlet 115, the second water outlet 116 and the connecting port 211.

[0043] The flow area of ​​the communication port 211 is larger than the flow area of ​​any one of the first water outlet 115 and the second water outlet 116. This arrangement can ensure smooth flow of the liquid.

[0044] Furthermore, the antifreeze valve 30 includes a valve seat 31, a valve core structure 32 and a temperature bag structure 33. The valve seat 31 has a valve cavity and a valve port that are interconnected. The valve core structure 32 and the temperature bag structure 33 are arranged in the valve cavity. The temperature bag structure 33 is connected to the valve core structure 32 by driving. The temperature bag structure 33 is affected by temperature and can drive the valve core structure 32 to block and open the valve port. When the temperature is low, the temperature bag structure 33 can drive the valve core structure 32 to open the valve port, thereby completing the discharge of the cryogenic liquid. When the temperature is high, the temperature bag structure 33 can drive the valve core structure 32 to block the valve port. With such a configuration, the structure is simple, and it is convenient to assemble the antifreeze valve 30, and it is also convenient to realize the function of low-temperature drainage.

[0045] Specifically, the operating part includes a connecting rod 22 and an operating rod 23. One end of the connecting rod 22 is connected to the reversing disc 21, and the other end of the connecting rod 22 extends to the other end of the through hole 114. With such a configuration, the structure is simple and easy to process. Among them, in the present application, the reversing disc 21 and the connecting rod 22 are an integral structure. The operating rod 23 is detachably connected to the other end of the connecting rod 22. With such a configuration, it is convenient to install the reversing disc 21 and the operating rod 23 on the valve body structure 10. Among them, the operating rod 23 and the connecting rod 22 are detachably connected by screws, and the structure is simple and easy to assemble.

[0046] Furthermore, the through hole 114 and the connecting rod 22 are clearance-matched, and a first sealing ring 41 is provided between the through hole 114 and the connecting rod 22. This arrangement facilitates the connecting rod 22 to rotate in the through hole 114, and can prevent liquid from leaking from the through hole 114.

[0047] Among them, there are a second sealing ring 42 and a third sealing ring 43 between the reversing disc 21 and the bottom surface of the accommodating cavity 111, the second sealing ring 42 is arranged between the first water outlet 115 and the second water outlet 116, and the through hole 114 is located in the second sealing ring 42, and the first water outlet 115 and the second water outlet 116 are located in the third sealing ring 43. Such an arrangement can prevent liquid from leaking at the first water outlet 115 and the second water outlet 116, thereby ensuring the normal operation of the antifreeze drainage device.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0050] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An antifreeze drainage device, It is characterized in that The antifreeze drainage device comprises: A valve body structure (10), the valve body structure (10) comprising a water inlet (121), a receiving cavity (111), and a first channel (112) and a second channel (113) that are independent of each other, and a first water outlet (115) and a second water outlet (116) are provided at the bottom of the receiving cavity (111), and the receiving cavity (111) is in communication with the water inlet (121), the first water outlet (115), and the second water outlet (116); a reversing structure (20) rotatably disposed on the valve body structure (10), the reversing structure (20) being capable of blocking or opening the first channel (112) and the second channel (113), the reversing structure (20) being used to enable the accommodating chamber (111) to communicate with the first channel (112) or the second channel (113); an antifreeze valve (30), the antifreeze valve (30) comprising a valve cavity and a valve port which are connected to each other, one end of the valve cavity being connected to the second channel (113), and the valve port being located at the other end of the valve cavity; When the reversing structure (20) opens the first channel (112), the liquid in the accommodating chamber (111) flows into the first channel (112) through the first water outlet (115); when the reversing structure (20) opens the second channel (113), the liquid in the accommodating chamber (111) flows into the valve chamber through the second water outlet (116) and the second channel (113).

2. The antifreeze drainage device according to claim 1, It is characterized in that The reversing structure (20) comprises a reversing disc (21), the reversing disc (21) being rotatably arranged in the accommodating cavity (111), the reversing disc (21) being provided with a communication port (211), and the reversing disc (21) being rotated so that the communication port (211) is connected to the first channel (112) or the second channel (113).

3. The antifreeze drainage device according to claim 2, It is characterized in that The valve body structure (10) is provided with a through hole (114), one end of which is in communication with the accommodating cavity (111), and the reversing structure (20) further comprises an operating portion, the operating portion is inserted into the through hole (114), and one end of which is connected to the reversing disk (21).

4. The antifreeze drainage device according to claim 3, It is characterized in that The valve body structure (10) comprises: A main valve body (11) comprising the accommodating chamber (111), the first channel (112), the second channel (113) and the through hole (114); The upper valve body (12) has the water inlet (121), the upper valve body (12) is detachably arranged in the accommodating cavity (111), the reversing disc (21) is arranged between the main valve body (11) and the upper valve body (12), and the upper valve body (12) is used to communicate with the system pipeline.

5. The antifreeze drainage device according to claim 4, It is characterized in that The reversing disc (21) is in contact with the bottom surface of the accommodating cavity (111); the water inlet (121) of the upper valve body (12) is arranged corresponding to the first water outlet (115) and the second water outlet (116); the valve body structure (10) further comprises a first elastic member (13); the first elastic member (13) is arranged between the upper valve body (12) and the reversing disc (21); one end of the first elastic member (13) is in contact with the upper valve body (12); and the other end of the first elastic member (13) is in contact with the reversing disc (21).

6. The antifreeze drainage device according to claim 5, It is characterized in that The curvature between the first water outlet (115) and the second water outlet (116) is greater than the curvature of the communication port (211).

7. The antifreeze drainage device according to claim 5, It is characterized in that The flow area of ​​the communication port (211) is greater than the flow area of ​​any one of the first water outlet (115) and the second water outlet (116).

8. The antifreeze drainage device according to claim 1, It is characterized in that The antifreeze valve (30) comprises a valve seat (31), a valve core structure (32) and a temperature bag structure (33); the valve seat (31) has a valve cavity and a valve port which are interconnected; the valve core structure (32) and the temperature bag structure (33) are arranged in the valve cavity; the temperature bag structure (33) is drivingly connected to the valve core structure (32); the temperature bag structure (33) is affected by temperature and can drive the valve core structure (32) to block and open the valve port.

9. The antifreeze drainage device according to claim 3, It is characterized in that The operating unit comprises: A connecting rod (22), one end of the connecting rod (22) being connected to the reversing plate (21), and the other end of the connecting rod (22) extending to the other end of the through hole (114); The operating rod (23) is detachably connected to the other end of the connecting rod (22).

10. The antifreeze drainage device according to claim 9, It is characterized in that The through hole (114) and the connecting rod (22) are clearance-matched, and a first sealing ring (41) is provided between the through hole (114) and the connecting rod (22).

11. The antifreeze drainage device according to claim 5, It is characterized in that A second sealing ring (42) and a third sealing ring (43) are provided between the reversing disk (21) and the bottom surface of the accommodating cavity (111); the second sealing ring (42) is arranged between the first water outlet (115) and the second water outlet (116); the through hole (114) is located in the second sealing ring (42); and the first water outlet (115) and the second water outlet (116) are located in the third sealing ring (43).

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