Coal gas drainer

Abstract

The utility model relates to coal gas drainer technical field, concretely is coal gas drainer, including the barrel body, the high pressure chamber and low pressure chamber are equipped in the barrel body, the high pressure chamber and low pressure chamber pass through the communicating pipe intercommunication, the top of barrel body is equipped with the water inlet pipe, the bottom end of water inlet pipe extends to the position near high pressure chamber inside bottom, the outer wall of barrel body is equipped with the drain pipe with low pressure chamber intercommunication, the output end of drain pipe is equipped with the filter assembly, the filter assembly includes the circular filter box, and the coarse filter screen and fine filter screen are sequentially equipped in the circular filter box from below to above, and the opening department of circular filter box front side is equipped with the tank cover, and the top of circular filter box outer wall is equipped with the water pipe, and the top of water pipe is equipped with the anti -leakage subassembly. This coal gas drainer, through coarse filter screen and fine filter screen double interception impurity, and combine detachable design, effectively avoid the water hole blockage, solved the easy problem of plugging of the aperture difference in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of gas drainers, specifically to gas drainers. Background Technology

[0002] A gas drainer is a specialized device used in gas pipeline systems to effectively remove moisture formed by gas condensation within the pipes, thus preventing safety hazards such as pipe corrosion and gas leaks caused by moisture accumulation. Through a specific structural design, it allows condensate to drain automatically from the pipes, improving the safety and stability of the gas system. The gas drainer achieves moisture removal automatically, ensuring the normal operation of the gas system.

[0003] Patent CN206890097U discloses a gas drainer, including a drainer body. Its structure includes a barrel with a first vertical partition dividing the barrel into a first compartment and a second compartment. A second vertical partition further divides the second compartment into a third compartment and a fourth compartment. The top plate of the first compartment has a vent and an inlet. A vent pipe is connected to the vent, and an inlet pipe is connected to the inlet. A first overflow hole is located at the top of the first vertical partition. A first connecting pipe connected to the first overflow hole is located in the third compartment. A second overflow hole is located at the top of the second vertical partition. A second connecting pipe connected to the second overflow hole is located in the fourth compartment. A drain pipe is located in the fourth compartment, and the outlet of the drain pipe is equipped with a gas leak prevention mechanism. Drainage holes are located on the lower side walls of the first, third, and fourth compartments. Each drainage hole has a drainage flange, and each drainage flange has a drainage cover. This invention has the advantage of preventing gas leakage.

[0004] However, in actual use, condensate generated in the gas pipeline can be discharged through the overflow pipe. When the gas breaks through all the water seals of the drainer body, the valve disc moves upward under the action of the upward-moving gas and rests against the horizontal baffle, blocking the through hole of the horizontal baffle and thus preventing gas leakage. However, because the diameter of the liquid passage hole is much smaller than the diameter of the gas guide hole, the liquid passage hole is easily blocked by impurities in the liquid. This defect means that the existing design lacks effective anti-clogging measures, affecting the long-term stability and safety of the gas drainer. In view of this, we propose a gas drainer to solve the problems in the existing technology and ensure the safe operation of the gas system. Utility Model Content

[0005] The purpose of this invention is to provide a gas drainer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Gas drainer, including the tank, combined Figure 1 , Figure 2 and Figure 3 As shown, the barrel contains a high-pressure chamber and a low-pressure chamber. The high-pressure chamber receives and temporarily stores condensate from the gas pipeline, while the low-pressure chamber delivers the condensate to a drain pipe. The high-pressure and low-pressure chambers are connected by a connecting pipe, which balances the pressure between them and delivers the condensate. A water inlet pipe is located at the top of the barrel, introducing condensate from the gas pipeline into the high-pressure chamber. A water inlet valve is connected to the top flange of the water inlet pipe, controlling the flow rate of the condensate and connecting it to the gas pipeline via a conduit. The bottom of the water inlet pipe extends to a position near the bottom of the high-pressure chamber. This design ensures that condensate is fully injected into the bottom of the high-pressure chamber to avoid gas interference. A drain pipe connected to the low-pressure chamber is located on the outer wall of the barrel. A filter assembly is located at the output end of the drain pipe, which delivers the condensate from the low-pressure chamber to the filter assembly.

[0008] The filtration assembly includes a circular filter box connected to a drain pipe. The circular filter box provides a multi-stage filtration space. From bottom to top, the circular filter box contains a coarse filter plate and a fine filter plate. The coarse filter plate intercepts large particles of impurities in the condensate, while the fine filter plate further filters out tiny impurities to prevent clogging of the water passages. A cover is provided at the opening on the front side of the circular filter box to seal the filter box and facilitate filter maintenance. A water guide pipe is provided at the top of the outer wall of the circular filter box, and a leak-proof component is provided at the top of the water guide pipe. The water guide pipe is used to transport the filtered water to the leak-proof component.

[0009] Preferred, such as Figure 1 As shown, the top of the barrel is equipped with a water supply pipe with a valve, which is used to replenish the water required for the water seal in the high-pressure chamber. The water supply pipe is connected to the high-pressure chamber. The bottom of the outer wall of the barrel is equipped with two drain pipes, which are connected to the high-pressure chamber and the low-pressure chamber respectively. The drain pipes are used to discharge impurities deposited in the high-pressure chamber and the low-pressure chamber. The output end of the drain pipe is connected to a drain cover plate by bolts and nuts. The drain cover plate is used to seal the drain pipe and supports manual cleaning operation.

[0010] Preferred, such as Figure 5 As shown, the lower middle part of the inner wall of the circular filter box is provided with two first U-shaped side plates arranged symmetrically from left to right. The coarse filter plate is inserted between the two first U-shaped side plates. The first U-shaped side plates are used to fix and limit the coarse filter plate.

[0011] The upper middle part of the inner wall of the circular filter box is provided with two second U-shaped side plates arranged symmetrically from left to right. The fine filter screen is inserted between the two second U-shaped side plates, and the second U-shaped side plates are used to fix and limit the fine filter screen.

[0012] Preferred, combined Figure 3 and Figure 4 As shown, the inner wall of the circular filter box has an internally threaded fixing tube in the middle of the rear side. The internally threaded fixing tube is used to fix the box cover in cooperation with the threaded rod. The inner wall of the box cover has a threaded rod in the middle of the front side. The threaded rod is used to tighten and loosen the box cover by rotation. The threaded rod is threadedly connected to the internally threaded fixing tube. The front side of the box cover has a handwheel. The handwheel is used to provide rotational torque to operate the threaded rod.

[0013] A rubber pad is provided on the front side of the inner wall of the box cover. The rubber pad is used to enhance the sealing between the box cover and the filter box. A clearance hole is opened in the middle of the front side of the rubber pad for the threaded rod to pass through. The front sides of the circular filter box, the first U-shaped side plate, the second U-shaped side plate, the internal threaded fixing tube, the coarse filter screen plate and the fine filter screen plate are all tightly fitted to the rear side of the rubber pad. This design ensures the overall sealing of the filter assembly to prevent liquid leakage.

[0014] Preferred, such as Figure 6 As shown, the leak prevention component includes an overflow tank connected to a water pipe. The overflow tank is used to block gas leakage under abnormal pressure and guide water flow out under normal conditions. The overflow tank is provided with a first partition and a second partition from bottom to top. The bottom of the first partition and near the outer edge are provided with multiple water passage holes, which allow water to flow through. The inner diameter of the water passage holes is 2-5mm. A gas guide pipe is provided through the middle of the top of the first partition. The inner diameter of the gas guide pipe is 4-6cm. A water outlet hole is provided in the middle of the top of the second partition. The inner diameter of the water outlet hole is 2-3cm. Condensate flows through the water passage holes and the water outlet hole in sequence and is discharged from the overflow pipe.

[0015] When the gas breaks through the water seal of the tank, the gas will rush upward into the overflow tank from the water pipe. Since the diameter of the water passage is much smaller than the diameter of the gas pipe, most of the gas entering the overflow tank rushes into the gas pipe. The gas pushes the conical valve covering the gas pipe upward and pushes it upward. Under the action of the upward moving gas, the conical valve moves up to the bottom of the second partition and blocks the water outlet. Thus, the gas entering the overflow tank cannot pass through the water outlet and cannot be discharged to the outside from the overflow pipe, thereby preventing gas leakage.

[0016] A guide tube is provided through the middle of the top of the overflow tank. The guide tube is used to guide the vertical movement of the movable rod. The guide tube contains a movable rod that can move up and down. The bottom end of the movable rod passes through the water outlet and is fixedly connected to a conical valve. The conical valve is used to seal the water outlet to prevent leakage when the gas pressure is abnormal. The outer wall of the conical valve is in contact with the inner wall of the top of the gas guide tube. The top of the movable rod is provided with an indicator ball. The indicator ball is used to indicate the valve opening and closing status by changing its position.

[0017] The overflow tank is provided with an overflow pipe on its outer wall. The inlet end of the overflow pipe is located above the second partition. The overflow pipe is used to drain condensate to protect the system safety.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This gas drainer uses both coarse and fine filter plates to intercept impurities, and its detachable design effectively prevents the water passage from becoming clogged, solving the problem of easy clogging caused by differences in aperture size in existing technologies. At the same time, the design of extending the water inlet pipe to the bottom of the high-pressure chamber ensures that condensate is fully injected, reducing gas interference and significantly improving drainage efficiency.

[0020] 2. This gas drainer features a leak-proof component that uses a gas guide pipe and a water passage hole to separate the flow path and a conical valve to dynamically seal the water outlet hole. This design automatically blocks the leakage path when the gas pressure is abnormal. The layered structure inside the overflow tank achieves efficient gas-liquid separation, reducing the risk of leakage after the gas breaks through the water seal from the source.

[0021] 3. The gas drainer features a filter assembly with a cover handwheel for fixing, a rubber gasket for sealing, and a pluggable filter screen structure, which simplifies the filter screen cleaning and replacement process. The comprehensive optimization of the sealing structure further prevents liquid leakage and gas escape. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the filter assembly structure in this utility model;

[0025] Figure 4 This is a schematic diagram of the box cover structure in this utility model;

[0026] Figure 5 This is a partial structural diagram of the filter assembly in this utility model;

[0027] Figure 6 This is a cross-sectional structural diagram of the leak-proof component in this utility model;

[0028] In the diagram: 100, barrel body; 101, high-pressure chamber; 102, low-pressure chamber; 110, drain pipe; 111, drain cover; 200, water inlet pipe; 300, water inlet valve; 400, connecting pipe; 500, water supply pipe; 600, drain pipe; 700, filter assembly; 710, circular filter box; 711, first U-shaped side plate; 712, second U-shaped side plate; 720, coarse filter screen; 730, fine filter screen; 740, internal thread. Fixed pipe; 750, tank cover; 751, threaded rod; 752, handwheel; 760, rubber pad; 761, clearance hole; 800, water guide pipe; 900, leak-proof assembly; 910, overflow tank; 920, first partition; 921, water passage hole; 930, second partition; 931, water outlet hole; 940, air guide pipe; 950, guide pipe; 960, movable rod; 970, conical valve disc; 980, indicator ball; 990, overflow pipe. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please see Figures 1-6 This utility model provides a technical solution:

[0032] Gas drainer, including tank 100, combined with Figure 1 , Figure 2 and Figure 3As shown, the barrel 100 contains a high-pressure chamber 101 and a low-pressure chamber 102. The high-pressure chamber 101 receives and temporarily stores condensate from the gas pipeline, while the low-pressure chamber 102 transports the condensate to the drain pipe 600. The high-pressure chamber 101 and the low-pressure chamber 102 are connected by a connecting pipe 400, which balances the pressure between the high-pressure chamber 101 and the low-pressure chamber 102 and transports the condensate. A water inlet pipe 200 is located at the top of the barrel 100, which introduces the condensate from the gas pipeline into the high-pressure chamber 101. The top flange is connected to a water inlet valve 300, which is used to control the input flow of condensate and is connected to the gas pipeline through a conduit. The bottom end of the water inlet pipe 200 extends to a position close to the bottom of the high pressure chamber 101. This design ensures that the condensate is fully injected into the bottom of the high pressure chamber 101 to avoid gas interference. The outer wall of the barrel 100 is provided with a drain pipe 600 that is connected to the low pressure chamber 102. The output end of the drain pipe 600 is provided with a filter assembly 700. The drain pipe 600 is used to transport the condensate from the low pressure chamber 102 to the filter assembly 700.

[0033] The filter assembly 700 includes a circular filter box 710 connected to the drain pipe 600. The circular filter box 710 provides a multi-stage filtration space. Inside the circular filter box 710, a coarse filter plate 720 and a fine filter plate 730 are arranged sequentially from bottom to top. The coarse filter plate 720 is used to intercept large particulate impurities in the condensate, and the fine filter plate 730 is used to further filter small impurities to prevent the water passage hole 921 from clogging. A box cover 750 is provided at the opening on the front side of the circular filter box 710. The box cover 750 is used to close the filter box and facilitate the maintenance of the filter screen. A water guide pipe 800 is provided at the top of the outer wall of the circular filter box 710. A leak-proof component 900 is provided at the top of the water guide pipe 800. The water guide pipe 800 is used to transport the filtered water to the leak-proof component 900.

[0034] In this embodiment, as Figure 1 As shown, the top of the barrel 100 is equipped with a water supply pipe 500 with a valve. The water supply pipe 500 is used to replenish the water required for the water seal in the high-pressure chamber 101. The water supply pipe 500 is connected to the high-pressure chamber 101. The bottom of the outer wall of the barrel 100 is equipped with two drain pipes 110. The two drain pipes 110 are connected to the high-pressure chamber 101 and the low-pressure chamber 102 respectively. The drain pipes 110 are used to discharge the impurities deposited in the high-pressure chamber 101 and the low-pressure chamber 102. The output end of the drain pipe 110 is connected to a drain cover plate 111 by bolts and nuts. The drain cover plate 111 is used to seal the drain pipe 110 and support manual cleaning operation.

[0035] Specifically, such as Figure 5As shown, the lower middle part of the inner wall of the circular filter box 710 is provided with two first U-shaped side plates 711 arranged symmetrically from left to right. The coarse filter plate 720 is inserted between the two first U-shaped side plates 711. The first U-shaped side plates 711 are used to fix and limit the coarse filter plate 720.

[0036] The upper middle part of the inner wall of the circular filter box 710 is provided with two second U-shaped side plates 712 arranged symmetrically from left to right. The fine filter plate 730 is inserted between the two second U-shaped side plates 712. The second U-shaped side plates 712 are used to fix and limit the fine filter plate 730.

[0037] Furthermore, in combination Figure 3 and Figure 4 As shown, a threaded fixing tube 740 is provided in the middle of the rear side of the inner wall of the circular filter box 710. The threaded fixing tube 740 is used to fix the box cover 750 in cooperation with the threaded rod 751. A threaded rod 751 is provided in the middle of the front side of the inner wall of the box cover 750. The threaded rod 751 is used to tighten and loosen the box cover 750 by rotation. The threaded rod 751 is threadedly connected to the threaded fixing tube 740. A handwheel 752 is provided on the front side of the box cover 750. The handwheel 752 is used to provide rotational torque to operate the threaded rod 751.

[0038] A rubber gasket 760 is provided on the front side of the inner wall of the cover 750. The rubber gasket 760 is used to enhance the sealing between the cover 750 and the filter box. A clearance hole 761 for the threaded rod 751 to pass through is opened in the middle of the front side of the rubber gasket 760. The front sides of the circular filter box 710, the first U-shaped side plate 711, the second U-shaped side plate 712, the internal threaded fixing tube 740, the coarse filter screen plate 720 and the fine filter screen plate 730 are all tightly fitted to the rear side of the rubber gasket 760. This design ensures the overall sealing of the filter assembly 700 to prevent liquid leakage.

[0039] Furthermore, such as Figure 6 As shown, the leak prevention component 900 includes an overflow tank 910 connected to the water guide pipe 800. The overflow tank 910 is used to block gas leakage under abnormal pressure and guide water flow out under normal conditions. The overflow tank 910 has a first partition 920 and a second partition 930 arranged sequentially from bottom to top. The bottom of the first partition 920 and near the outer edge are provided with a plurality of water passage holes 921, which allow water to flow through. The inner diameter of the water passage holes 921 is 2-5mm. A gas guide pipe 940 is provided through the middle of the top of the first partition 920. The inner diameter of the gas guide pipe 940 is 4-6cm. A water outlet hole 931 is provided in the middle of the top of the second partition 930. The inner diameter of the water outlet hole 931 is 2-3cm. Condensate flows through the water passage holes 921 and the water outlet hole 931 in sequence and is discharged from the overflow pipe 990.

[0040] When the gas breaks through the water seal of the barrel 100, the gas will rush upward from the water pipe 800 into the overflow barrel 910. Since the diameter of the water passage hole 921 is much smaller than the diameter of the gas pipe 940, most of the gas entering the overflow barrel 910 rushes into the gas pipe 940. The gas pushes the conical valve 970 covering the gas pipe 940 upward and pushes it upward. Under the action of the upward moving gas, the conical valve 970 moves upward to the bottom of the second partition 930 and blocks the water outlet hole 931. Thus, the gas entering the overflow barrel 910 cannot pass through the water outlet hole 931 and cannot be discharged to the outside from the overflow pipe 990, thereby preventing gas leakage.

[0041] A guide tube 950 is provided through the middle of the top of the overflow tank 910. The guide tube 950 is used to guide the vertical movement of the movable rod 960. The movable rod 960, which can move up and down, is provided inside the guide tube 950. The bottom end of the movable rod 960 passes through the water outlet 931 and is fixedly connected to a conical valve disc 970. The conical valve disc 970 is used to seal the water outlet 931 to prevent leakage when the gas pressure is abnormal. The outer wall of the conical valve disc 970 is in contact with the inner wall of the top of the gas guide tube 940. The top of the movable rod 960 is provided with an indicator ball 980. The indicator ball 980 is used to indicate the valve opening and closing status by changing its position.

[0042] The outer wall of the overflow tank 910 is provided with an overflow pipe 990. The inlet end of the overflow pipe 990 is located above the second partition 930. The overflow pipe 990 is used to drain condensate to protect the system safety.

[0043] In this embodiment, when the gas drainer is in use, the condensate produced by the gas pipeline enters the high-pressure chamber 101 inside the tank 100 through the inlet pipe 200. The bottom end of the inlet pipe 200 extends close to the bottom of the high-pressure chamber 101 to ensure sufficient condensate injection. The high-pressure chamber 101 and the low-pressure chamber 102 are connected by a connecting pipe 400 to transport condensate. The condensate flows through the low-pressure chamber 102 into the drain pipe 600 and into the circular filter box 710 of the filter assembly 700. The coarse filter plate 720 and the fine filter plate 730 arranged sequentially inside the circular filter box 710 intercept large particles and small impurities, respectively. The filtered water enters the overflow tank 910 of the leak-proof assembly 900 through the water guide pipe 800. The water passage hole 921 on the first partition 920 inside the overflow tank 910 allows water to flow through, and the second partition 930... The outlet hole 931 allows water to flow through, and under normal conditions, the water flows out through the overflow pipe 990. When the gas pressure is abnormal and breaks the water seal, the gas rushes into the overflow tank 910 through the water guide pipe 800 and pushes up the conical valve 970 through the gas guide pipe 940. The conical valve 970 blocks the outlet hole 931 to prevent leakage. At the same time, the indicator ball 980 at the top of the movable rod 960 moves upward to indicate that the valve is blocked and a gas leak has occurred. During regular maintenance, the box cover 750 is removed by rotating the threaded rod 751 through the handwheel 752, and the coarse filter plate 720 and the fine filter plate 730 are cleaned or replaced. The drain cover 111 of the drain pipe 110 can be removed to clean the deposited impurities in the high-pressure chamber 101 and the low-pressure chamber 102. The water supply pipe 500 is used to replenish the water seal of the high-pressure chamber 101 to ensure the continuous and stable operation of the equipment.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas drain device, comprising a tank (100), characterized in that: The barrel (100) contains a high-pressure chamber (101) and a low-pressure chamber (102), which are connected by a connecting pipe (400). A water inlet pipe (200) is located at the top of the barrel (100), with a water inlet valve (300) connected to its top flange. The bottom end of the water inlet pipe (200) extends to a position near the bottom of the high-pressure chamber (101). A drain pipe (600) connected to the low-pressure chamber (102) is located on the outer wall of the barrel (100). The output end of the water pipe (600) is provided with a filter assembly (700). The filter assembly (700) includes a circular filter box (710) connected to the drain pipe (600). The circular filter box (710) is provided with a coarse filter screen (720) and a fine filter screen (730) from bottom to top. The opening on the front side of the circular filter box (710) is provided with a box cover (750). The top of the outer wall of the circular filter box (710) is provided with a water guide pipe (800). The top of the water guide pipe (800) is provided with a leak-proof assembly (900).

2. The gas drainer according to claim 1, characterized in that: The top of the barrel (100) is provided with a water supply pipe (500) with a valve, which is connected to the high pressure chamber (101). The bottom of the outer wall of the barrel (100) is provided with two sewage pipes (110), which are connected to the high pressure chamber (101) and the low pressure chamber (102) respectively. The output end of the sewage pipe (110) is connected to a sewage cover plate (111) by bolts and nuts.

3. The gas drainer according to claim 1, characterized in that: The lower middle part of the inner wall of the circular filter box (710) is provided with two first U-shaped side plates (711) arranged symmetrically on the left and right, and the coarse filter screen (720) is inserted between the two first U-shaped side plates (711).

4. The gas drainer according to claim 3, characterized in that: The upper middle part of the inner wall of the circular filter box (710) is provided with two second U-shaped side plates (712) arranged symmetrically on the left and right, and the fine filter screen (730) is inserted between the two second U-shaped side plates (712).

5. The gas drainer according to claim 4, characterized in that: The inner wall of the circular filter box (710) is provided with an internally threaded fixing tube (740) in the middle of the rear side, and the inner wall of the box cover (750) is provided with a threaded rod (751) in the middle of the front side. The threaded rod (751) is threadedly connected to the internally threaded fixing tube (740), and the front side of the box cover (750) is provided with a handwheel (752).

6. The gas drainer according to claim 5, characterized in that: A rubber pad (760) is provided on the front side of the inner wall of the box cover (750). A clearance hole (761) for the threaded rod (751) to pass through is provided in the middle of the front side of the rubber pad (760). The front sides of the circular filter box (710), the first U-shaped side plate (711), the second U-shaped side plate (712), the internal threaded fixing tube (740), the coarse filter screen plate (720) and the fine filter screen plate (730) are all in close contact with the rear side of the rubber pad (760).

7. The gas drainer according to claim 1, characterized in that: The leak-proof component (900) includes an overflow tank (910) connected to a water pipe (800). The overflow tank (910) has a first partition (920) and a second partition (930) arranged sequentially from bottom to top. The first partition (920) has multiple water passage holes (921) at its bottom and near its outer edge. The water passage holes (921) have an inner diameter of 2-5 mm. The top center of the first partition (920) is provided with a vent pipe (940) with an inner diameter of 4-6 cm. The top center of the second partition (930) is provided with a water outlet hole (931) with an inner diameter of 2-3 cm.

8. The gas drainer according to claim 7, characterized in that: A guide tube (950) is provided through the middle of the top of the overflow tank (910). A movable rod (960) that can move up and down is provided inside the guide tube (950). The bottom end of the movable rod (960) passes through the water outlet (931) and is fixedly connected to a conical valve disc (970). The outer wall of the conical valve disc (970) is in contact with the inner wall of the top of the air guide tube (940). An indicator ball (980) is provided at the top of the movable rod (960).

9. The gas drainer according to claim 7, characterized in that: The outer wall of the overflow tank (910) is provided with an overflow pipe (990), and the inlet end of the overflow pipe (990) is located above the second partition (930).

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