Air blocking prevention device

Abstract

The utility model discloses an anti-air-blocking device which comprises an air storage tank, a drainage assembly, a first channel assembly and a second channel assembly. One end of the first channel assembly is communicated with the gas storage tank, one end of the second channel assembly is communicated with the bottom surface of the gas storage tank, and the other end of the second channel assembly is respectively communicated with the drainage assembly and the other end of the first channel assembly. By arranging the first channel assembly, gas can flow into the gas storage tank through the first channel assembly, compressed air is prevented from flowing to the external environment, and loss of the compressed air is reduced; meanwhile, the problem that gas blocks the second channel assembly is solved, condensate water can smoothly enter the drainage assembly and flow out of the outside, it is guaranteed that no condensate water is contained in the gas storage tank, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of compressed air, specifically to an anti-airlock device. Background Technology

[0002] In a compressed air system, as air passes through an air tank, air-water separator, filter, and refrigerated dryer, condensation occurs on the equipment due to cooling, collision separation, and heat exchange. This condensation is typically discharged through an automatic drainage system.

[0003] Because the automatic drainage component is installed below the gas storage tank, condensate and gas enter the component together. When the condensate volume increases and reaches the opening condition, the automatic drainage component opens the drain valve to discharge the condensate; when the condensate volume decreases and reaches the closing condition, the automatic drainage component closes the drain valve. During this process, only condensate is discharged from the automatic drainage component, while gas remains inside. Since the gas occupies most of the volume, condensate cannot re-enter the component, causing condensate to accumulate and accumulate in the equipment. This accelerates oxidation, corrosion, and wear, reduces the equipment's lifespan, and significantly decreases production efficiency. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an anti-gas-blockage device that can solve the problem of gas blockage, allowing condensate to drain smoothly from the gas storage tank, greatly improving the service life of the equipment.

[0005] An anti-gas-blocking device according to an embodiment of the present invention includes: a gas storage tank; a drainage assembly including a float unit and a drainage channel connected to each other; a first channel assembly for gas passage, one end of which is connected to the gas storage tank; and a second channel assembly for condensate and gas passage, one end of which is connected to the bottom surface of the gas storage tank, and the other end of which is connected to the drainage assembly and the other end of the first channel assembly.

[0006] The anti-air blockage device according to the embodiment of this utility model has at least the following beneficial effects: by setting the first channel component, gas can flow into the gas storage tank through the first channel component, preventing compressed air from flowing into the external environment and reducing the loss of compressed air; at the same time, it solves the problem of gas blocking the second channel component, allowing condensate to smoothly enter the drainage component and flow out to the outside, thereby ensuring that the gas storage tank does not contain condensate and improving the service life of the equipment.

[0007] According to some embodiments of the present invention, the first channel assembly includes a pressure balancing pipe for gas passage and an exhaust pipe having a connection port and an exhaust port; one end of the pressure balancing pipe is connected to the second channel assembly, the other end of the pressure balancing pipe is connected to the connection port of the exhaust pipe, and the exhaust port of the exhaust pipe is located inside the gas storage tank.

[0008] According to some embodiments of the present invention, the opening direction of the exhaust port is set downward.

[0009] According to some embodiments of the present invention, it further includes a first tee connector, and the second channel assembly is connected to the drainage assembly and the first channel assembly respectively through the first tee connector.

[0010] According to some embodiments of the present invention, the bottom of the gas storage tank is provided with an output end, which is connected to the second channel component.

[0011] According to some embodiments of the present invention, a second three-way connector is also included, which is connected to the output end, the second channel assembly and the air pressure balance pipe respectively; the exhaust pipe passes through the interior of the output end and the second three-way connector in sequence and is connected to the air pressure balance pipe.

[0012] According to some embodiments of the present invention, the first channel assembly further includes a first connector, a first mounting position is provided on the side of the first connector, a first inner hole is formed with the top surface of the first connector facing downward, a second inner hole is formed with the bottom surface of the first connector facing upward, and the first inner hole and the second inner hole are interconnected; the first mounting position is connected to the second tee connector, the first inner hole is connected to the connection port of the exhaust pipe, and the second inner hole is connected to the air pressure balance pipe.

[0013] According to some embodiments of the present invention, the two ends of the air pressure balance tube are respectively provided with a first quick connector and a second quick connector; the first quick connector is connected to the second inner hole, and the second quick connector is connected to the second channel assembly.

[0014] According to some embodiments of the present invention, the top of the drainage component is provided with a water inlet, and a water collection cavity is formed inside the drainage component. The water inlet is connected to the water collection cavity and the water inlet is connected to the second channel component. The float unit is disposed in the water collection cavity so that the float unit can regulate the opening and closing of the drainage channel according to the water level in the water collection cavity.

[0015] According to some embodiments of the present invention, a ball valve is also included, which is connected to the drainage assembly and the second channel assembly respectively.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the anti-airlock device according to an embodiment of the present utility model;

[0019] Figure 2 This is a partially enlarged view of the anti-airlock device according to an embodiment of the present utility model;

[0020] Figure 3 This is an exploded cross-sectional view of the anti-airlock device according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional view of the first connector according to an embodiment of the present utility model.

[0022] Figure label:

[0023] Gas storage tank 100, output end 110, drainage assembly 200, float unit 210, drainage channel 220, water inlet 230, water collection chamber 240, first channel assembly 300, air pressure balance pipe 310, exhaust pipe 320, connection port 321, exhaust port 322, first connector 330, first mounting position 331, first inner hole 332, second inner hole 333, first quick connector 340, second quick connector 350, second channel assembly 400, first tee connector 500, second tee connector 600, ball valve 700. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setup" and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] like Figure 1 and Figure 3 As shown, an anti-gas-blocking device according to an embodiment of the present invention includes: a gas storage tank 100; a drainage assembly 200, including a float unit 210 and a drainage channel 220 connected to each other; a first channel assembly 300 for gas passage, one end of which is connected to the gas storage tank 100; and a second channel assembly 400 for condensate and gas passage, one end of which is connected to the bottom surface of the gas storage tank 100, and the other end of which is connected to the drainage assembly 200 and the other end of the first channel assembly 300, respectively.

[0029] For example, such as Figure 1 and Figure 3 As shown, the gas storage tank 100 is used to store compressed gas. When the compressed gas does not enter the gas storage tank 100, the gas storage tank 100, the drainage component 200, the first channel component 300 and the second channel component 400 are all filled with ordinary gas. At this time, the drainage component 200 contains only ordinary gas, so the float unit 210 closes the drainage channel 220.

[0030] When compressed air gradually enters the air storage tank 100 and produces condensate, the condensate is unable to enter the second channel assembly 400 due to the high pressure exerted by the second channel assembly 400 and the closed drain assembly 200, causing the condensate to accumulate at the bottom of the air storage tank 100. To address this, this application provides a first channel assembly 300. When the condensate gradually increases, it pressures the gas in the second channel assembly 400 to a certain level, forcing the gas to flow from the second channel assembly 400 into the first channel assembly 300 and then into the air storage tank 100. The reduced gas level in the second channel assembly 400 allows the condensate to enter smoothly.

[0031] When condensate flows through the connection between the second channel assembly 400 and the first channel assembly 300, the condensate does not enter the first channel assembly 300 because the diameter of the first channel assembly 300 is very small, allowing only gas to pass through, thus restricting the entry of condensate. As the gas in the second channel assembly 400 gradually decreases, condensate continuously fills the second channel assembly 400 and enters the drainage assembly 200, causing the water level in the float unit 210 to rise. When the water level rises to a certain height, the float unit 210 opens the drainage channel 220, allowing the condensate to be discharged from the drainage assembly 200.

[0032] During the condensate drainage process, two situations may occur: (1) The first situation is that the condensate in the drainage component 200 will continue to be replenished from the second channel component 400, thereby slowing down the rate of water level drop in the drainage component 200; (2) The second situation is that the condensate in the gas storage tank 100 has been drained and no new condensate has been generated yet, so the gas in the gas storage tank 100 will enter the second channel component 400 and flow into the drainage component 200. Since the gas occupies a certain volume in the drainage component 200, the water level in the drainage component 200 drops; as a result, the gas capacity in the drainage component 200 continues to increase, so when the water level in the float unit 210 drops to a certain position, the float unit 210 closes the drainage channel 220, and the condensate drainage stops.

[0033] When condensate continues to be generated in the gas storage tank 100, the gas in the second channel component 400 will still flow into the gas storage tank 100 from the first channel component 300, so that the condensate continues to enter the drainage component 200, and the condensate is discharged from the drainage component 200 through the float unit 210 until the gas storage tank 100 is filled with compressed air.

[0034] In summary, the anti-air blockage device, by setting up the first channel component 300, allows gas to flow into the air storage tank 100 through the first channel component 300, preventing compressed air from flowing into the external environment and reducing compressed air loss. At the same time, it solves the problem of gas blocking the second channel component 400, allowing condensate to smoothly enter the drainage component 200 and flow out to the outside, thereby ensuring that the air storage tank 100 does not contain condensate and improving the service life of the equipment.

[0035] In some specific embodiments of this utility model, the first channel assembly 300 includes a pressure balancing pipe 310 for gas passage and an exhaust pipe 320 provided with a connection port 321 and an exhaust port 322; one end of the pressure balancing pipe 310 is connected to the second channel assembly 400, the other end of the pressure balancing pipe 310 is connected to the connection port 321 of the exhaust pipe 320, and the exhaust port 322 of the exhaust pipe 320 is located inside the gas storage tank 100.

[0036] For example, such as Figure 3 As shown, the pressure balance pipe 310 controls the entry of gas by setting its own diameter; since the exhaust port 322 of the exhaust pipe 320 is located inside the gas storage tank 100, gas can pass sequentially through the second channel assembly 400, the pressure balance pipe 310, and the exhaust pipe 320, and flow into the gas storage tank 100 from the exhaust port 322. The location of the exhaust port 322 is not limited; for example, it can be located at the bottom, side, or top of the gas storage tank 100.

[0037] In some specific embodiments of this utility model, the opening direction of the exhaust port 322 is set downward.

[0038] For example, such as Figure 3 As shown, in addition to gas or condensate, the gas storage tank 100 may also contain other impurities. In order to prevent these impurities from falling into the exhaust port 322 and causing blockage of the exhaust port 322, the opening direction of the exhaust port 322 is set downward, thereby reducing the occurrence of malfunctions.

[0039] In some specific embodiments of this utility model, a first tee connector 500 is also included, and the second channel assembly 400 is connected to the drainage assembly 200 and the first channel assembly 300 respectively through the first tee connector 500.

[0040] For example, such as Figure 2 and Figure 3 As shown, condensate flows sequentially through the second channel assembly 400 and the first tee connector 500 into the drain assembly 200, and gas flows sequentially through the second channel assembly 400, the first tee connector 500, the pressure balance pipe 310, and the exhaust pipe 320 into the gas storage tank 100. It can be seen that the first tee connector 500 facilitates the simultaneous connection of the second channel assembly 400, the drain assembly 200, and the pressure balance pipe 310, which greatly improves the efficiency of condensate and gas transportation and simplifies the connection difficulty between components.

[0041] In some specific embodiments of this utility model, the bottom of the gas storage tank 100 is provided with an output end 110, which is connected to the second channel assembly 400.

[0042] For example, such as Figure 3 As shown, the output terminal 110 helps to enhance the connection efficiency with the second channel assembly 400, thereby forming a sealed delivery channel.

[0043] In some specific embodiments of this utility model, a second three-way connector 600 is also included, which is connected to the output end 110, the second channel assembly 400 and the air pressure balance pipe 310 respectively; the exhaust pipe 320 passes through the interior of the output end 110 and the second three-way connector 600 in sequence and is connected to the air pressure balance pipe 310.

[0044] For example, as shown in Figure 3, the exhaust port 322 of the exhaust pipe 320 is located inside the gas storage tank 100. The middle part of the exhaust pipe 320 passes through the output end 110 and the interior of the second three-way connector 600 in sequence. The connection port 321 of the exhaust pipe 320 is connected to the pressure balance pipe 310. On this basis, a gas conveying channel is formed inside the exhaust pipe 320, and a condensate conveying channel is formed between the outer surface of the exhaust pipe 320 and the inner surface of the second three-way connector 600. Therefore, the gas in the pressure balance pipe 310 can enter the liquid storage tank through the gas conveying channel, while the condensate in the liquid storage tank can enter the second channel assembly 400 through the condensate conveying channel. It can be seen that the two channels transport independently, which greatly improves the conveying efficiency of condensate and gas and simplifies the connection difficulty between components.

[0045] In some specific embodiments of this utility model, the first channel assembly 300 further includes a first connector 330. A first mounting position 331 is provided on the side of the first connector 330. A first inner hole 332 is formed with the top surface of the first connector 330 facing downward, and a second inner hole 333 is formed with the bottom surface of the first connector 330 facing upward. The first inner hole 332 and the second inner hole 333 are interconnected. The first mounting position 331 is connected to the second tee connector 600, the first inner hole 332 is connected to the connection port 321 of the exhaust pipe 320, and the second inner hole 333 is connected to the air pressure balance pipe 310.

[0046] For example, such as Figure 2 and Figure 3 As shown, the first connector 330 facilitates the connection between the second tee connector 600, the connection port 321, and the pressure balance pipe 310, thereby improving the connection efficiency between the parts. Furthermore, the first inner hole 332 and the second inner hole 333 connect the pressure balance pipe 310 and the exhaust pipe 320, allowing gas to smoothly enter the exhaust pipe 320 from the pressure balance pipe 310 and flow into the gas storage tank 100 from the exhaust pipe 320. Further, after the connection port 321 of the exhaust pipe 320 is inserted into the first inner hole 332, it can be fixed by welding.

[0047] In some specific embodiments of this utility model, the two ends of the air pressure balance tube 310 are respectively provided with a first quick connector 340 and a second quick connector 350; the first quick connector 340 is connected to the second inner hole 333, and the second quick connector 350 is connected to the second channel assembly 400.

[0048] For example, such as Figure 3 As shown, the first quick-connect connector 340 and the second quick-connect connector 350 facilitate the rapid connection of the air pressure balance tube 310 with the second inner hole 333 and the second channel assembly 400, thereby improving the connection efficiency between components.

[0049] In some specific embodiments of this utility model, the top of the drainage component 200 is provided with a water inlet 230, and a water collection cavity 240 is formed inside the drainage component 200. The water inlet 230 is connected to the water collection cavity 240 and the water inlet 230 is connected to the second channel component 400. The float unit 210 is disposed in the water collection cavity 240 so that the float unit 210 can regulate the opening and closing of the drainage channel 220 according to the water level height of the water collection cavity 240.

[0050] For example, such as Figure 3 As shown, condensate in the second channel assembly 400 flows into the water collection chamber 240 from the inlet 230. The float unit 210 raises the water level in the water collection chamber 240 as the condensate level increases. When the water level reaches a certain height, the float unit 210 opens the drain channel 220, allowing the condensate to drain from the drain assembly 200. As the condensate continues to drain, when the water level in the float unit 210 drops to a certain height, the float unit 210 closes the drain channel 220, and the condensate drainage stops. Therefore, the float unit 210 can regulate the opening and closing of the drain channel 220 according to the water level in the water collection chamber 240, which facilitates timely drainage of condensate while ensuring effective retention of compressed air.

[0051] In some specific embodiments of this utility model, a ball valve 700 is also included, which is connected to the drainage assembly 200 and the second channel assembly 400 respectively.

[0052] For example, such as Figure 2 and Figure 3 As shown, the ball valve 700 mainly consists of a valve body, a ball, and an actuator. The opening and closing element of the ball valve 700 is a ball with a circular through hole. The ball is driven by the valve stem and rotates around the axis of the ball valve 700. When the ball rotates to a specific position, its hole aligns with or offsets with the channel of the valve body, thereby realizing the flow of fluid.

[0053] When the drain assembly 200 is working normally, by setting the ball valve 700 to the open state, the condensate in the second channel assembly 400 can flow smoothly into the drain assembly 200. When the drain assembly 200 needs to be inspected or repaired, by setting the ball valve 700 to the closed state, the continued flow of condensate in the second channel assembly 400 can be blocked, thereby facilitating the disconnection between the drain assembly 200 and the ball valve 700, which is beneficial for handling the drain assembly 200.

[0054] Other components and operations of the anti-airlock device according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0055] The following is for reference. Figures 1-4The following description describes the anti-airlock device according to a specific embodiment of the present invention in detail. It is worth understanding that the following description is merely illustrative and not a specific limitation of the present invention.

[0056] like Figures 1-4 As shown, an anti-airlock device includes: an air tank 100, a second tee connector 600, a first connector 330, a first quick-connect connector 340, a pressure balancing pipe 310, an exhaust pipe 320, a second channel assembly 400, a first tee connector 500, a second quick-connect connector 350, a ball valve 700, and a drainage assembly 200. The exhaust pipe 320 has a connection port 321 and an exhaust port 322, with the exhaust port 322 opening downwards. An output end 110 is located at the bottom of the air tank 100. A first mounting position 331 is located on the side of the first connector 330. A first inner hole 332 is formed on the top surface of the first connector 330 facing downwards, and a second inner hole 333 is formed on the bottom surface of the first connector 330 facing upwards. The first inner hole 332 and the second inner hole 333 are interconnected. The first quick-connect connector 340 and the second quick-connect connector 350 are respectively located at both ends of the pressure balancing pipe 310.

[0057] The drainage assembly 200 includes a float unit 210 and a drainage channel 220 connected to each other. An inlet 230 is provided at the top of the drainage assembly 200, and a water collection chamber 240 is formed inside the drainage assembly 200. The inlet 230 communicates with the water collection chamber 240 and is connected to the second channel assembly 400. The float unit 210 is disposed within the water collection chamber 240 so that the float unit 210 regulates the opening and closing of the drainage channel 220 according to the water level in the water collection chamber 240. The vent pipe 320 and the second channel assembly 400 are made of corrosion-resistant materials; for example, the vent pipe 320 can be made of stainless steel, and the second channel assembly 400 can be made of galvanized pipe.

[0058] The second tee connector 600 is connected to the output end 110, the second channel assembly 400, and the first mounting position 331 respectively; the exhaust port 322 of the exhaust pipe 320 is located inside the air storage tank 100, and the middle part of the exhaust pipe 320 passes through the output end 110 and the interior of the second tee connector 600 in sequence, so that the connection port 321 of the exhaust pipe 320 is connected to the first inner hole 332, the second inner hole 333 is connected to the first quick connector 340, the first tee connector 500 is connected to the second quick connector 350, the second channel assembly 400, and the ball valve 700 respectively, and the ball valve 700 is connected to the water inlet 230.

[0059] According to the anti-airlock device of this utility model embodiment, by setting it up in this way, at least the following effects can be achieved: when compressed gas does not enter the gas storage tank 100, the gas storage tank 100, the drainage component 200, the second channel component 400, the exhaust pipe 320 and the pressure balance pipe 310 are all filled with ordinary gas; as compressed air gradually enters the gas storage tank 100, condensate will be generated in the gas storage tank 100. When the pressure of the condensate on the gas in the second channel component 400 reaches a certain limit, the gas is forced to flow from the second channel component 400 through the pressure balance pipe 310 and the exhaust pipe 320 in sequence, and enter the gas storage tank 100. As the gas in the second channel component 400 decreases, condensate smoothly enters the second channel component 400 and flows into the water collection chamber 240 of the drainage component 200. As the condensate in the water collection chamber 240 increases, the water level in the float unit 210 rises. When the water level rises to a certain height, the float unit 210 opens the drainage channel 220, allowing the condensate to be discharged from the drainage component 200. When the water level in the float unit 210 drops to a certain position, the float unit 210 closes the drainage channel 220, thus stopping the discharge of condensate.

[0060] As can be seen, the gas can flow into the gas storage tank 100 through the pressure balance pipe 310 and the exhaust pipe 320, preventing compressed air from flowing into the external environment and reducing the loss of compressed air. At the same time, it solves the problem of gas blocking the second channel component 400, allowing condensate to smoothly enter the drainage component 200 and flow out to the outside, thereby ensuring that the gas storage tank 100 does not contain condensate and improving the service life of the equipment.

[0061] In the description of this specification, references to terms such as "one embodiment," "some embodiments," or "this embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for preventing airlocking, characterized in that, include: gas tank; Drainage assembly, including interconnected float units and drainage channels; A first channel assembly is used for gas passage, and one end of it is connected to the gas storage tank; The second channel assembly is used for the passage of condensate and gas. One end of the second channel assembly is connected to the bottom surface of the gas storage tank, and the other end of the second channel assembly is connected to the drainage assembly and the other end of the first channel assembly, respectively.

2. The anti-airlock device according to claim 1, characterized in that: The first channel assembly includes a pressure balancing pipe for gas passage and an exhaust pipe with a connection port and an exhaust port; one end of the pressure balancing pipe is connected to the second channel assembly, the other end of the pressure balancing pipe is connected to the connection port of the exhaust pipe, and the exhaust port of the exhaust pipe is located inside the gas storage tank.

3. The anti-airlock device according to claim 2, characterized in that: The exhaust port is set to open downwards.

4. The anti-airlock device according to claim 1, characterized in that: It also includes a first tee connector, through which the second channel assembly is connected to the drainage assembly and the first channel assembly respectively.

5. The anti-airlock device according to claim 2, characterized in that: The bottom of the gas storage tank is provided with an output end, which is connected to the second channel component.

6. The anti-airlock device according to claim 5, characterized in that: It also includes a second three-way connector, which is connected to the output end, the second channel assembly and the air pressure balance pipe respectively; the exhaust pipe passes through the interior of the output end and the second three-way connector in sequence and is connected to the air pressure balance pipe.

7. The anti-airlock device according to claim 6, characterized in that: The first channel assembly further includes a first connector, a first mounting position is provided on the side of the first connector, a first inner hole is formed with the top surface of the first connector facing downwards, and a second inner hole is formed with the bottom surface of the first connector facing upwards. The first inner hole and the second inner hole are interconnected. The first mounting position is connected to the second tee connector, the first inner hole is connected to the connection port of the exhaust pipe, and the second inner hole is connected to the air pressure balance pipe.

8. The anti-airlock device according to claim 7, characterized in that: The pressure balance tube is provided with a first quick connector and a second quick connector at both ends; the first quick connector is connected to the second inner hole, and the second quick connector is connected to the second channel assembly.

9. The anti-airlock device according to claim 1, characterized in that: The top of the drainage assembly is provided with a water inlet, and a water collection cavity is formed inside the drainage assembly. The water inlet is connected to the water collection cavity and is connected to the second channel assembly. The float unit is disposed in the water collection cavity so that the float unit can regulate the opening and closing of the drainage channel according to the water level in the water collection cavity.

10. The anti-airlock device according to claim 1, characterized in that: It also includes a ball valve, which is connected to the drainage assembly and the second channel assembly, respectively.

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