Intelligent exhaust valve

Abstract

The invention relates to the technical field of pipeline fluid control, and discloses an intelligent exhaust valve which comprises a valve body, a valve deck, a guide cover and a floating body, the guide cover is arranged in the middle of an inner cavity of the valve body, an opening of the guide cover faces upwards, a flow channel is formed between the guide cover and the valve body, and a first through hole communicating with the flow channel is formed in the bottom of the guide cover; the air inlet of the valve body is provided with an air inlet pipe located below the first through hole, the port of the air inlet pipe is covered with a filter screen, the side wall of the top of the guide cover is provided with a second through hole communicating the interior of the guide cover with the flow channel, the floating body is inserted into the guide cover and is in lifting fit with the guide cover, the valve deck is located above the valve body, and a sealing cover is arranged at the joint of the valve deck and the valve body. An air outlet pipe abutting against the sealing cover is arranged at the top of the valve deck, an air outlet communicated with the air outlet pipe is formed in the center of the sealing cover, and the air outlet is closed when the floating body floats upwards to abut against the sealing cover. The exhaust valve has the effect of improving the use stability of the exhaust valve.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline fluid control, and in particular to an intelligent exhaust valve. Background Art

[0002] In pipeline fluid transportation systems, gas accumulation is a common problem that affects the normal operation of the system. Whether it is a material transportation pipeline in industrial production or a city water supply and drainage pipeline, the presence of gas will cause problems such as gas blockage, pipeline vibration, increased noise, reduced transportation efficiency, and even cause pipeline system failures and safety accidents in severe cases. For example, in a heating pipeline system, gas accumulation can form a gas plug, hindering the circulation of hot water and reducing heating efficiency; in petrochemical pipelines, gas accumulation may cause pressure fluctuations, affect process stability, and even cause equipment damage.

[0003] At present, the exhaust valves on the market are mainly divided into two categories: manual exhaust valves and traditional automatic exhaust valves. Manual exhaust valves require regular manual operation, which not only increases labor costs, but also makes it difficult to ensure timely exhaust. When used in large and complex pipeline systems, untimely exhaust often affects system operation efficiency.

[0004] Traditional automatic exhaust valves are usually equipped with multiple mechanical parts such as floats, levers, springs, etc. Although they can automatically exhaust, the exhaust process depends on the change of the buoyancy of the float. When the amount of gas in the pipeline is small or the pressure fluctuates, the float is not sensitive, and exhaust is prone to lag or no exhaust, affecting the stability of the pipeline system. In addition, traditional automatic exhaust valves are prone to failure due to impurity accumulation and component wear after long-term use, and they need to be disassembled as a whole for maintenance, which is time-consuming and labor-intensive, resulting in long pipeline system downtime. Summary of the invention

[0005] In order to improve the operating stability of the exhaust valve, the present application provides an intelligent exhaust valve.

[0006] The intelligent exhaust valve provided in this application adopts the following technical solutions: 1. The vent valve of claim 1, wherein the vent valve is located in the middle of the inner cavity of the valve body and the opening faces upward to form a flow channel with the valve body. A first through hole connected to the flow channel is provided at the bottom of the guide hood. An air inlet pipe located below the first through hole is provided at the air inlet of the valve body. A filter screen is provided on the upper cover of the air inlet pipe port. A second through hole connecting the interior of the guide hood with the flow channel is provided on the top side wall of the guide hood. The float is inserted into the guide hood and closes the second through hole. The valve hood is located above the valve body and a sealing hood is provided at the connection with the valve body. An air outlet pipe supporting the sealing hood is provided on the top of the valve hood. An air outlet hole connected to the air outlet pipe is provided in the center of the sealing hood. The air outlet hole is closed when the float floats up to contact the sealing hood.

[0007] By adopting the above technical solution, when the exhaust valve is working, the gas in the pipeline enters through the air inlet of the valve body and into the intake pipe. The filter screen at the port of the intake pipe can filter impurities, reducing the risk of component wear and blockage caused by impurities entering the valve body, and improving the service stability of the exhaust valve. And when the gas volume in the pipeline is small and insufficient to make the floating body float, a small amount of gas enters the inside of the guide cover through the second through hole and is discharged from the air outlet hole, solving the exhaust problem caused by the insensitive movement of the floating ball in the traditional automatic exhaust valve and realizing stable and reliable automatic exhaust.

[0008] Optionally, a guide rod is provided at the bottom end of the floating body. The bottom end of the guide rod slidably penetrates through the bottom of the guide cover and the filter screen, and a cleaning member is provided between the guide rod and the filter screen. The cleaning member dredges and cleans the mesh holes of the filter screen during the lifting and lowering process of the floating body.

[0009] By adopting the above technical solution, when the floating body rises and falls, it can drive the cleaning member to dredge and clean the filter screen, reducing the possibility of the filter screen being blocked by impurities, making the air intake of the exhaust valve smooth, and thus improving the operation stability of the exhaust valve.

[0010] Optionally, the cleaning member includes a cleaning frame rotatably sleeved on the port of the intake pipe, a cleaning brush provided on the side of the cleaning frame facing the filter screen, and a rotating ring provided at the axis of the cleaning frame. The guide rod slidably penetrates through the rotating ring and drives the rotating ring to rotate during the lifting and lowering process.

[0011] By adopting the above technical solution, the lifting of the guide rod drives the rotation of the rotating ring, and then the cleaning frame rotates, so that the cleaning brush dredges and cleans the mesh holes of the filter screen, which can effectively reduce the risk of the filter screen being blocked, improve the air intake smoothness, reduce the exhaust failure caused by impurity accumulation, and improve the service stability of the exhaust valve.

[0012] Optionally, a spiral steering groove is provided on the outer side wall of the floating body in a ring shape. A steering column is provided on the inner side wall of the guide cover. The steering column is inserted into the steering groove and is slidably matched with the steering groove. A guide key is provided on the inner side wall of the rotating ring. A guide groove is provided on the axial side wall of the guide rod. The guide key is inserted into the guide groove and is slidably matched with the guide groove.

[0013] By adopting the above technical solution, when the floating body rises and falls in the guide cover, since the steering column is inserted into the spiral steering groove on the outer side wall of the floating body and is slidably matched, the floating body rotates during the lifting and lowering process. At the same time, when the guide rod rises and falls, the guide groove on its axial side wall is slidably matched with the guide key on the inner side wall of the rotating ring, thereby driving the rotating ring to rotate synchronously. The rotation of the rotating ring drives the cleaning member to dredge and clean the mesh holes of the filter screen, improving the service stability of the exhaust valve and reducing the occurrence of exhaust lag or non-exhaust caused by poor air intake.

[0014] Optionally, a dirt collection ring groove is formed between the inner wall of the valve body and the intake pipe. A scraping strip that fits against the inner side wall of the dirt collection ring groove is connected to the outer side wall of the outer ring of the cleaning rack through a connecting rod. A flushing pipe and a sewage discharge pipe that communicate with the dirt collection ring groove are provided on the side wall of the valve body. First sealing caps are rotatably sleeved on the pipe ends of the flushing pipe and the sewage discharge pipe outside the valve body through threads.

[0015] By adopting the above technical solution, the dirt collection ring groove can collect the impurities scraped off by the rotation of the cleaning brush and the pipeline liquid entering the dirt collection ring groove. The rotating ring drives the scraping strip to scrape the inner side wall of the dirt collection ring groove, which can reduce the risk of liquid fouling and the accumulation and adhesion of impurities; when the exhaust valve is regularly maintained, water can be injected into the dirt collection ring groove from the flushing pipe for flushing, and then the sewage and impurities are discharged through the sewage discharge pipe, reducing the risk of the sealing effect decreasing due to complex disassembly of the valve body and the valve cover, and improving the convenience of maintaining the drain valve.

[0016] Optionally, an annular pressure sensor is coaxially arranged at the bottom end of the air outlet pipe. An elastic member that abuts against the sealing cover is connected to the test part of the annular pressure sensor. A housing is arranged on the top of the valve cover on one side of the air outlet pipe. A controller is arranged in the housing, and the annular pressure sensor is electrically connected to the controller.

[0017] By adopting the above technical solution, an annular pressure sensor is arranged at the bottom end of the air outlet pipe, and the elastic member is used to support the sealing cover. Cooperating with the controller arranged in the housing, the pressure condition at the sealing cover can be monitored in real time, realizing intelligent monitoring of the working state of the exhaust valve, being able to timely feedback the pressure change in the pipeline, and contributing to ensuring the stable operation of the pipeline system.

[0018] Optionally, a water leakage detection sensor electrically connected to the controller is further installed in the valve cover. The test bottom end of the water leakage detection sensor contacts the top wall of the sealing cover.

[0019] By adopting the above technical solution, it is possible to monitor in real time whether there is water leakage at the sealing cover and transmit the signal to the controller so as to timely handle the water leakage problem and improve the operation stability of the intelligent exhaust valve.

[0020] Optionally, a second sealing cap is rotatably sleeved on the top end of the air outlet pipe through threads. Vent holes are formed in the top side wall of the second sealing cap. When the second sealing cap is tightened, the vent holes are in sealing fit with the outer wall of the air outlet pipe.

[0021] By adopting the above technical solution, the ventilation state of the exhaust valve can be conveniently adjusted. Tightening the second sealing cap can prevent air from being discharged, enabling the exhaust valve to achieve the closing function. Unscrewing it can restore the exhaust function, enhancing the flexibility of using the exhaust valve, facilitating the sealing test of the exhaust valve before use, and at the same time reducing the risk of the exhaust valve malfunctioning due to external mosquitoes and impurities entering the exhaust valve during use.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the exhaust valve is working, the gas in the pipeline enters through the air inlet of the valve body and the intake pipe. The filter screen at the port of the intake pipe can filter impurities, reducing the risk of component wear and blockage caused by impurities entering the valve body, and improving the use stability of the exhaust valve. And when the gas volume in the pipeline is small and not enough to make the floating body float, a small amount of gas enters the inside of the guide cover through the second through hole and is discharged from the air outlet hole, solving the exhaust problem caused by the insensitive movement of the floating ball in the traditional automatic exhaust valve and realizing stable and reliable automatic exhaust; 2. When the floating body rises and falls, it can drive the cleaning part to dredge and clean the filter screen, reducing the possibility of the filter screen being blocked by impurities, making the air intake of the exhaust valve smooth, and thus improving the operation stability of the exhaust valve; 3. The lifting of the guide rod drives the rotating ring to rotate, and then the cleaning frame rotates, so that the cleaning brush dredges and cleans the mesh holes of the filter screen, which can effectively reduce the risk of the filter screen being blocked, improve the air intake smoothness, reduce the exhaust failure caused by impurity accumulation, and improve the use stability of the exhaust valve. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0024] Figure 2 is the overall structural sectional view of the embodiment of the present application.

[0025] Figure 3 is the structural schematic diagram of the floating body in the embodiment of the present application.

[0026] Figure 4 is Figure 2 the enlarged view of part A in

[0027] Figure 5 is the structural sectional view of the embodiment of the present application during maintenance.

[0028] Description of the Reference Numerals: 1. Valve body; 11. Flow channel; 12. Air inlet pipe; 121. Filter screen; 13. Sewage ring groove; 14. Flushing pipe; 141. Press-flushing device; 15. Drain pipe; 151. Export pipe; 16. First sealing cover; 2. Valve cover; 21. Air outlet pipe; 211. Mounting frame; 22. Shell; 221. Controller; 3. Guide cover; 31. First through hole; 32. Second through hole; 33. Steering column; 4. Float; 41. Steering groove; 42. Guide rod; 421. Guide groove; 5. Sealing cover; 51. Air outlet; 6. Annular pressure sensor; 61. Elastic member; 7. Water leakage detection sensor; 8. Cleaning member; 81. Cleaning frame; 811. Connecting rod; 812. Scraping strip; 82. Cleaning brush; 83. Swivel; 831. Guide key; 9. Second sealing cover; 91. Air vent; 92. Sealing gasket. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 - 5 This application is described in further detail.

[0030] The embodiment of the present application discloses an intelligent exhaust valve.

[0031] Reference Figure 1 and Figure 2 The intelligent exhaust valve includes a valve body 1, a valve cover 2, a guide cover 3 and a float 4. The valve cover 2 is located above the valve body 1, and the two are sealed and connected by bolts and relatively clamped sealing gaskets. Among them, the guide cover 3 is integrally formed in the middle of the inner cavity of the valve body 1 and the opening faces upward, forming a flow channel 11 between the valve body 1, and the bottom of the guide cover 3 is provided with a plurality of first through holes 31 connected to the flow channel 11, and the top side wall is provided with a plurality of second through holes 32 connected to the interior thereof and the flow channel 11. The float 4 is inserted into the guide cover 3 and closes the second through holes 32. An air outlet pipe 21 is fixedly provided on the top of the valve cover 2, and a sealing cover 5 is supported at the bottom of the air outlet pipe 21. The sealing cover 5 is made of corrosion-resistant rubber material and is clamped at the connection between the valve cover 2 and the valve body 1, and an air outlet hole 51 connected to the air outlet pipe 21 is provided in the center of the sealing cover 5. When the float 4 floats up to contact the sealing cover 5, the air outlet hole 51 is closed.

[0032] Reference Figure 1 and Figure 2, on one side of the top of the valve cover 2 located at the outlet pipe 21, a housing 22 is bolted. A controller 221 is arranged inside the housing 22. The housing 22 is generally made of plastic or metal and is used to protect the internal controller 221. An annular pressure sensor 6 and a water leakage detection sensor 7 electrically connected to the controller 221 are installed inside the valve cover 2. The annular pressure sensor 6 is located between the outlet pipe 21 and the sealing cover 5 and is fixed on the bottom wall of the outlet pipe 21. And an elastic member 61 is arranged between the test part of the annular pressure sensor 6 and the sealing cover 5. In this embodiment, the elastic member 61 is a spring. The spring abuts against the test part of the annular pressure sensor 6 and the sealing cover 5, which helps the sealing cover 5 to recover after deformation. An installation frame 211 is fixedly sleeved on the outlet pipe 21, and the water leakage detection sensor 7 is installed on the installation frame 211, and the test bottom end thereof contacts the top wall of the sealing cover 5.

[0033] Refer to Figure 2 and Figure 3 , the floating body 4 is made of a lightweight material, such as plastic foam or a hollow metal ball, to ensure that it can easily float under the buoyancy of gas or liquid. The outer shape of the floating body 4 is adapted to the internal shape of the guiding cover 3 and can freely rise and fall inside the guiding cover 3. A spiral turning groove 41 is annularly arranged on the outer side wall of the floating body 4. A turning column 33 is fixedly arranged on the inner side wall of the guiding cover 3. The turning column 33 is made of a metal cylinder or a plastic cylinder. The turning column 33 is inserted into the turning groove 41 and is slidably matched with the turning groove 41. A guiding rod 42 is glued to the bottom of the floating ball, and the bottom end of the guiding rod 42 slidably passes through the bottom of the guiding cover 3.

[0034] Refer to Figure 2 , in order to prevent impurities in the pipeline from entering the valve body 1, an inlet pipe 12 is fixedly arranged directly below the first through hole 31 at the inlet of the valve body 1, and a filter net 121 is fixedly covered on the port of the inlet pipe 12. The bottom end of the guiding rod 42 also slidably passes through the filter net 121.

[0035] Refer to Figure 2 and Figure 4 , a cleaning member 8 is arranged on the inlet pipe 12. The cleaning member 8 includes a cleaning frame 81, a cleaning brush 82 and a rotating ring 83. The cleaning member 8 is coaxially rotatably sleeved on the port of the inlet pipe 12. The cleaning brush 82 is generally made of a material with relatively hard bristles, such as nylon bristles, and is fixedly arranged on the side wall of the cleaning frame 81 facing the filter net 121, and can effectively remove impurities on the filter net 121. The rotating ring 83 is integrally formed at the axis of the cleaning frame 81. The inner diameter of the rotating ring 83 is adapted to the outer diameter of the guiding rod 42. The guiding rod 42 slidably passes through the rotating ring 83. A guiding key 831 is integrally formed on the inner side wall of the rotating ring 83. A guiding groove 421 is formed on the axial side wall of the guiding rod 42. The shape of the guiding groove 421 is adapted to the guiding key 831. The guiding key 831 is inserted into the guiding groove 421 and is slidably matched with the guiding groove 421.

[0036] Reference Figure 2 、 Figure 3 and Figure 4 When the floating body 4 moves up and down in the guide cover 3, since the steering column 33 is inserted into the spiral steering groove 41 on the outer side wall of the floating body 4 and is in sliding fit, the floating body 4 rotates during the up and down movement. At the same time, when the guide rod 42 moves up and down, the guide groove 421 on its axial side wall slides with the guide key 831 on the inner side wall of the swivel ring 83, thereby driving the swivel ring 83 to rotate synchronously, and then making the cleaning frame 81 rotate, so that the cleaning brush 82 dredges and cleans the mesh holes of the filter net 121, which can effectively reduce the risk of blockage of the filter net 121, improve the air intake smoothness, reduce the exhaust failure caused by impurity accumulation, and improve the use stability of the exhaust valve.

[0037] Reference Figure 2 and Figure 4 A dirt collection ring groove 13 is formed between the inner wall of the valve body 1 and the intake pipe 12. The shape of the dirt collection ring groove 13 is annular, and is used to collect the impurities scraped off by the rotation of the cleaning brush 82 and the pipeline liquid entering the dirt collection ring groove 13. The outer side wall of the outer circle of the cleaning frame 81 is connected with scraping strips 812 that fit the inner side wall of the dirt collection ring groove 13 through connecting rods 811, and a plurality of scraping strips 812 are annularly arranged along the outer circle of the cleaning frame 81. In this embodiment, four are taken as an example, and the scraping strips 812 are made of a plastic material with certain elasticity and wear resistance. The swivel ring 83 drives the scraping strips 812 to scrape the inner side wall of the dirt collection ring groove 13, which can reduce the risk of liquid fouling and impurity adhesion accumulation.

[0038] Reference Figure 2 and Figure 5 A flushing pipe 14 and a sewage discharge pipe 15 communicating with the dirt collection ring groove 13 are installed on the side wall of the valve body 1. First sealing caps 16 are rotatably sleeved on the pipe ends of the flushing pipe 14 and the sewage discharge pipe 15 located outside the valve body 1 through threads. When performing regular maintenance on the exhaust valve, a pressing flushing device 141 is rotatably sleeved on the flushing pipe 14 through threads, and a lead-out pipe 151 is rotatably sleeved on the sewage discharge pipe 15 through threads. The clear water in the pressing flushing device 141 is injected into the dirt collection ring groove 13 by pressing, and the sewage and impurities in the dirt collection ring groove 13 are discharged from the lead-out pipe 151 through the sewage discharge pipe 15, reducing the risk of the sealing effect decreasing due to complex disassembly of the valve body 1 and the valve cover 2, and improving the convenience of maintaining the drain valve.

[0039] Reference Figure 1 and Figure 2 In order to improve the detection convenience and use stability of the exhaust valve, a second sealing cap 9 is rotatably sleeved on the top end of the air outlet pipe 21 through threads. A ventilation hole 91 is opened on the top side wall of the second sealing cap 9, and a sealing gasket 92 is fixedly arranged on the inner end wall of the second sealing cap 9. When the second sealing cap 9 is tightened, the ventilation hole 91 is in sealing fit with the outer wall of the air outlet pipe 21, and the end wall of the air outlet pipe 21 abuts against the sealing gasket 92.

[0040] The implementation principle of the intelligent exhaust valve in the embodiments of this application is as follows: The intelligent exhaust valve filters impurities through the filter screen 121, reducing the risk of component wear and blockage and improving the use stability. By using the cooperation of the floating body 4 and the guide cover 3, the exhaust problem caused by the insensitive movement of the floating ball in the traditional automatic exhaust valve is solved, realizing stable and reliable automatic exhaust. The filter screen 121 is dredged and cleaned by the cleaning part 8, reducing the possibility of blockage of the filter screen 121 and improving the air intake smoothness. The intelligent monitoring of the working state of the exhaust valve is realized by using the annular pressure sensor 6 and the water leakage detection sensor 7, which helps to ensure the stable operation of the pipeline system. At the same time, the setting of the sewage collection ring groove 13, the flushing pipe 14 and the sewage discharge pipe 15 improves the convenience of the maintenance of the drain valve. The setting of the second sealing cover 9 enhances the flexibility of the use of the exhaust valve. The combination and coordinated work of these structures greatly improve the stability, reliability and practicability of the exhaust valve compared with the prior art, reducing the maintenance cost and the downtime of the pipeline system.

[0041] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. Intelligent exhaust valve, comprising a valve body (1), a valve cover (2), a guide cover (3) and a floating body (4), characterized in that, The guiding cover (3) is arranged in the middle of the inner cavity of the valve body (1) with an upward opening, and a flow channel (11) is formed between the guiding cover (3) and the valve body (1). A first through hole (31) communicating with the flow channel (11) is opened at the bottom of the guiding cover (3). An intake pipe (12) located below the first through hole (31) is arranged at the air inlet of the valve body (1). A filter screen (121) is covered on the port of the intake pipe (12). A second through hole (32) communicating its interior with the flow channel (11) is opened on the side wall of the top of the guiding cover (3). The floating body (4) is inserted into the guiding cover (3) and closes the second through hole (32). The valve cover (2) is located above the valve body (1), and a sealing cover (5) is arranged at the connection part between the valve cover (2) and the valve body (1). An air outlet pipe (21) supporting the sealing cover (5) is arranged at the top of the valve cover (2). An air outlet hole (51) communicating with the air outlet pipe (21) is opened at the center of the sealing cover (5). When the floating body (4) floats up to abut against the sealing cover (5), the air outlet hole (51) is closed.

2. The intelligent exhaust valve according to claim 1, characterized in that, A guiding rod (42) is arranged at the bottom end of the floating body (4). The bottom end of the guiding rod (42) slidably penetrates through the bottom of the guiding cover (3) and the filter screen (121), and a cleaning member (8) is arranged between the guiding rod (42) and the filter screen (121). The cleaning member (8) dredges and cleans the mesh holes of the filter screen (121) during the ascending and descending process of the floating body (4).

3. The intelligent exhaust valve according to claim 2, wherein, The cleaning member (8) includes a cleaning frame (81) rotatably sleeved on the port of the intake pipe (12), a cleaning brush (82) arranged on the side of the cleaning frame (81) facing the filter screen (121), and a rotating ring (83) arranged at the axis center of the cleaning frame (81). The guiding rod (42) slidably penetrates through the rotating ring (83) and drives the rotating ring (83) to rotate during the ascending and descending process.

4. The intelligent exhaust valve according to claim 3, wherein, A spiral steering groove (41) is annularly arranged on the outer side wall of the floating body (4). A steering column (33) is arranged on the inner side wall of the guiding cover (3). The steering column (33) is inserted into the steering groove (41) and is in sliding fit with the steering groove (41). A guiding key (831) is arranged on the inner side wall of the rotating ring (83). A guiding groove (421) is opened on the axial side wall of the guiding rod (42). The guiding key (831) is inserted into the guiding groove (421) and is in sliding fit with the guiding groove (421).

5. The intelligent exhaust valve according to claim 3, wherein A dirt collection annular groove (13) is formed between the inner wall of the valve body (1) and the intake pipe (12). A scraping strip (812) fitting the inner side wall of the dirt collection annular groove (13) is connected to the outer ring side wall of the cleaning frame (81) through a connecting rod (811). A flushing pipe (14) and a sewage discharge pipe (15) communicating with the dirt collection annular groove (13) are arranged on the side wall of the valve body (1). First sealing caps (16) are rotatably sleeved on the pipe ends of the flushing pipe (14) and the sewage discharge pipe (15) located outside the valve body (1) through threads.

6. The intelligent exhaust valve according to claim 1, characterized in that A ring-shaped pressure sensor (6) is coaxially arranged at the bottom end of the air outlet pipe (21). An elastic member (61) connected to the abutting sealing cover (5) is connected at the test part of the ring-shaped pressure sensor (6). A housing (22) is arranged at the top of the valve cover (2) on one side of the air outlet pipe (21). A controller (221) is arranged in the housing (22). The ring-shaped pressure sensor (6) is electrically connected to the controller (221).

7. The intelligent exhaust valve according to claim 6, wherein, A water leakage detection sensor (7) electrically connected to the controller (221) is further installed in the valve cover (2). The test bottom end of the water leakage detection sensor (7) is in contact with the top wall of the sealing cover (5).

8. The intelligent exhaust valve according to claim 1, wherein The top end of the air outlet pipe (21) is rotatably sleeved with a second sealing cover (9) through a thread. A vent hole (91) is formed in the side wall of the top end of the second sealing cover (9). When the second sealing cover (9) is tightened, the vent hole (91) is in sealing fit with the outer wall of the air outlet pipe (21).

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