Air leakage prevention valve with alarm function

Abstract

The invention relates to an air leakage prevention valve with an alarm function. The air leakage prevention valve comprises a valve body, the left end of the valve body is fixedly connected with a breather pipe, the lower end of the breather pipe is fixedly connected with an air inlet pipe, the breather pipe communicates with the air inlet pipe, a valve element is rotationally arranged in the valve body, a through hole is formed in the valve element, and the left end of the valve element is fixedly connected with a rotating block; a trigger cavity is formed in the right end of the valve element, a movable plate is arranged in the trigger cavity, the movable plate is movably connected with the valve body and the valve rod, a valve cover is arranged at the right end of the valve body, a valve handle is arranged at the right end of the valve cover, and the valve rod sequentially penetrates through the movable plate, the valve body and the valve cover and is fixedly connected with the valve handle. The valve rod is rotationally connected with the valve body and the valve cover, the valve body is provided with an alarm lamp and a buzzer, and the alarm lamp and the buzzer both penetrate through the right side of the valve body and extend into the triggering cavity, so that when the valve body leaks air, an alarm can be given in time, the air inlet pipeline is closed, the valve is prevented from being opened and closed due to accidental touch, and meanwhile installation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of air leakage valves, in particular to an air leakage prevention valve with an alarm function. Background Art

[0002] With the progress of society, natural gas has entered thousands of households. In the process of using natural gas, gas valves are needed. Gas valves are used to cut off, connect and adjust the gas in the pipeline. They have good control characteristics and closing sealing performance. Gas valves often need to be opened and closed, which causes wear between the valve core and the valve body due to long-term friction. At the same time, since the gas in the gas pipeline is high-pressure gas, the gas leaks out from the gap between the valve core and the valve body. The valve body currently on the market cannot give timely warnings to personnel when there is a gas leakage problem. Failure to replace it in time is likely to cause safety accidents. In addition, with the existing gas valves, anyone can still open the valve at will with their hands or with general tools such as wrenches. Especially if some young children open it by mistake, it is easy to be poisoned or exploded. In addition, during the installation of the gas valve, the valve stem will rotate with the rotation of the inner thread of the valve seat, and then the installation position of the valve stem is not easy to determine. After installation, it needs to be removed repeatedly to adjust the length of the gas pipeline thread to determine the installation angle of the valve, so that the valve stem is in an obvious position, which is convenient for the control of the valve, and then the installation process is more troublesome. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides an anti-leakage valve with an alarm function, which solves the problem that the valve body cannot promptly warn personnel when a leak occurs, and failure to replace it in time may easily cause safety accidents.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an anti-leakage valve with an alarm function, comprising a valve body, a first ventilation pipe is fixedly connected to the left end of the valve body, a second ventilation pipe is fixedly connected to the lower end of the first ventilation pipe, the first ventilation pipe is connected to the second ventilation pipe, a valve core is rotatably arranged in the valve body, a through hole is arranged in the valve core, a rotating block is fixedly connected to the left end of the valve core, a valve stem is fixedly connected to the right end of the valve core, the rotating block is rotatably connected to the inside of the first ventilation pipe, a trigger chamber is arranged at the right end of the valve core, a movable plate is arranged in the trigger chamber, and the valve core is provided with a plurality of valve elements. The movable plate is movably connected to the valve body and the valve stem, a valve cover is provided at the right end of the valve body, a valve handle is provided at the right end of the valve cover, the valve stem passes through the movable plate, the valve body and the valve cover in sequence and is fixedly connected to the valve handle, the valve stem is rotatably connected to the valve body and the valve cover, an alarm light and a buzzer are provided on the valve body, the alarm and the buzzer both pass through the right side of the valve body and extend into the trigger cavity, two positioning columns are also provided on the valve body, a PLC controller is provided at the upper end of the second ventilation pipe, the PLC controller is connected to the alarm and the buzzer through a wire, so as to timely alarm and remind people when there is a gas leak, thereby increasing safety.

[0007] It is further preferred that a fixing component is provided on the valve handle, the fixing component includes a valve handle clamp, the valve handle clamp is provided with a hinge and a spring, the hinge and the spring are fixedly connected to the valve handle at one end, and fixedly connected to the valve handle clamp at the other end, the valve handle clamp is rotatably connected to a rotating rod, the left end of the rotating rod is fixedly connected to a torsion plate, and the right end passes through the valve handle clamp and is fixedly connected to a positioning plate, so as to fix the position of the valve handle conveniently. In case of accidental collision, the valve handle will also be fixed, and the positioning plate can fix the rotating rod.

[0008] In a further preferred embodiment, a fixing ring is provided on the fixing sleeve at the right end of the valve body, a T-shaped fixing groove is provided on the fixing ring, a fixing block matching the fixing groove is movably provided in the fixing groove, the fixing block is fixedly connected to the positioning plate, a sealing ring is provided in the valve cover, and the sealing ring is sleeved between the valve stem and the valve cover to facilitate fixing the valve handle clamp.

[0009] It is further preferred that one end of the first ventilation pipe and the second ventilation pipe are each provided with a mounting assembly, and the mounting assembly includes a connector threadedly connected to the first ventilation pipe and the second ventilation pipe, the interior of the connector is an inner hexagon, and a first sealing ring is provided on the side of the connector to facilitate the installation of the valve and seal the installed pipe.

[0010] In a further preferred embodiment, the installation assembly further comprises a hexagonal tube, the hexagonal tube is movably sleeved on the outside of the connecting piece, a second sealing ring is sleeved between the hexagonal tube and the connecting piece, and a thread is arranged inside the hexagonal tube for easy connection with the gas pipeline.

[0011] It is further preferred that an anti-leakage assembly is provided inside the second ventilation pipe, and the leakage assembly includes a sealing plate and a sealing chamber, the sealing plate is arranged on one side of the sealing chamber, a motor is fixedly arranged in the sealing chamber, and the motor is connected to the PLC controller through a wire, so that the PLC controller can control the motor and seal the air intake pipe when there is a leak.

[0012] It is further preferred that the motor driving end is fixedly connected to a rotating shaft, the rotating shaft passes through a sealing plate and is fixedly connected to a driving gear, the driving gear is meshingly connected to two driven gears, each of the driven gears is fixedly connected to a screw, each of the screws is rotatably connected to the sealing plate, each of the screw threads is connected to a moving seat, and two moving seats are fixedly connected to the sealing shaft, so as to facilitate the control of the movement of the moving group.

[0013] It is further preferred that a ventilation pipeline is provided inside the sealing shaft, and a positioning ring and a third sealing ring are sleeved outside the sealing shaft to facilitate the passage of gas, and the third sealing ring plays a sealing role when closing the pipeline.

[0014] In a further embodiment, the sealing shaft is pluggably connected with a sealing tube, and the sealing tube is fixedly connected to the second ventilation pipe to facilitate cooperation with the sealing shaft to seal the intake pipe.

[0015] In a further preferred embodiment, air inlet holes are evenly arranged on the sealing tube, the sealing tube is rotatably connected to the two screws, a sealing plug is fixedly arranged inside the sealing tube, the air inlet holes facilitate the entry of gas, and the sealing plug facilitates the sealing shaft.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides an anti-leakage valve with an alarm function, which has the following beneficial effects:

[0018] 1. In the present invention, when the gas leaks from between the valve body and the valve core, the movable plate can quickly trigger the buzzer and the alarm light to warn people, and at the same time transmit the signal to the PLC controller, so that the sealing shaft seals the sealing tube, thereby sealing the air inlet pipe, so that the gas is sealed from the air inlet of the valve, and the valve no longer leaks, thereby ensuring the safety of natural gas use, preventing the phenomenon of natural gas valve leakage, and avoiding the occurrence of danger.

[0019] 2. In the present invention, the valve handle, valve handle clamp, spring, hinge, rotating rod, torsion plate, positioning plate and fixed block cooperate to open and close the valve, and the valve handle is fixed on the fixed ring at the same time. Even if it is accidentally touched or by a child, the valve will not be opened and closed at will, thus ensuring safety and avoiding the risk of poisoning or explosion.

[0020] 3. In the present invention, when installing the valve, it is only necessary to place the connecting piece in the hexagonal tube and connect it to the valve, adjust the position and angle of the valve, and then rotate the hexagonal tube to install the valve on the gas pipeline. The position and angle of the valve do not need to be adjusted repeatedly during installation, so that the valve installation is convenient and quick, saving time and labor costs. During installation, the first sealing ring and the second sealing ring can seal the pipeline to prevent gas leakage due to gaps between components, thereby increasing the safety factor of natural gas use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an anti-leakage valve with an alarm function in the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the overall structure of an anti-leakage valve with an alarm function in the present invention;

[0023] Figure 3 For the present invention Figure 2 A is a partial enlarged schematic diagram;

[0024] Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of B in the middle;

[0025] Figure 5 For the present invention Figure 2 A partial enlarged schematic diagram of C in the middle;

[0026] Figure 6 It is a schematic cross-sectional view of the structure of the valve body in the present invention;

[0027] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of D in the middle;

[0028] Figure 8 It is a schematic cross-sectional view of a part of the structure of the air leakage prevention component in the present invention;

[0029] Fig. 9 It is a schematic cross-sectional view of the structure of the installation component part in the present invention.

[0030] In the figure: 1, valve body; 2, vent pipe; 3, air inlet pipe; 4, valve core; 5, through hole; 6, rotating block; 7, valve stem; 8, trigger chamber; 9, movable plate; 10, valve cover; 11, valve handle; 12, alarm light; 13, buzzer; 14, positioning column; 15, PLC controller; 16, valve handle clamp; 17, hinge; 18, spring; 19, rotating rod; 20, torsion plate; 21, positioning plate; 22, fixing ring; 23, fixing groove; 24, fixing Fixed block; 25, sealing ring; 26, connecting piece; 27, first sealing ring; 28, hexagonal tube; 29, second sealing ring 30, thread; 31, sealing plate; 32, sealing chamber; 33, motor; 34, rotating shaft; 35, driving gear; 36, driven gear; 37, screw; 38, moving seat; 39, sealing shaft; 40, ventilation pipeline; 41, positioning ring; 42, third sealing ring; 43, sealing tube; 44, air inlet; 45, sealing plug. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1-9 , an anti-leakage valve with an alarm function, comprising a valve body 1, a vent pipe 2 is fixedly connected to the left end of the valve body 1, an intake pipe 3 is fixedly connected to the lower end of the vent pipe 2, the vent pipe 2 is communicated with the intake pipe 3, a valve core 4 is rotatably arranged in the valve body 1, a through hole 5 is arranged in the valve core 4, a rotating block 6 is fixedly connected to the left end of the valve core 4, a valve stem 7 is fixedly connected to the right end of the valve core 4, the rotating block 6 is rotatably connected to the inside of the vent pipe 2, a trigger chamber 8 is arranged at the right end of the valve core 4, a movable plate 9 is arranged in the trigger chamber 8, and the movable plate 9 is movably connected to the valve body 1 and the valve stem 7, A valve cover 10 is provided at the right end of the valve body 1, and a valve handle 11 is provided at the right end of the valve cover 10. The valve stem 7 passes through the movable plate 9, the valve body 1 and the valve cover 10 in sequence and is fixedly connected to the valve handle 11. The valve stem 7 is rotatably connected to the valve body 1 and the valve cover 10. An alarm light 12 and a buzzer 13 are provided on the valve body 1. The alarm light 12 and the buzzer 13 both pass through the right side of the valve body 1 and extend into the trigger chamber 8. Two positioning columns 14 are also provided on the valve body 1. A PLC controller 15 is provided at the upper end of the intake pipe 3, and the PLC controller 15 is connected to the alarm light 12 and the buzzer 13 through wires.

[0034] In this embodiment, the valve handle 11 is provided with a fixing component, and the fixing component includes a valve handle clamp 16. The valve handle clamp 16 is provided with a hinge 17 and a spring 18. The hinge 17 and the spring 18 are fixedly connected to the valve handle 11 at one end, and fixedly connected to the valve handle clamp 16 at the other end. The valve handle clamp 16 is rotatably connected to a rotating rod 19. The left end of the rotating rod 19 is fixedly connected to a torsion plate 20, and the right end passes through the valve handle clamp 16 and is fixedly connected to a positioning plate 21. The valve handle 11 is held by hand, and the valve handle clamp 16 is lifted by fingers. The spring 18 is compressed, and the valve handle clamp 16 rotates around the hinge 17. The valve handle clamp 16 drives the rotating rod 19, the torsion plate 20 and the positioning plate 21 away from the fixing ring 22. The valve handle clamp 16 is released, and the valve handle clamp 16 can return to its original position under the action of the spring 18.

[0035] In this embodiment, a fixing ring 22 is fixedly sleeved at the right end of the valve body 1, and a T-shaped fixing groove 23 is arranged on the fixing ring 22. A fixing block 24 cooperating with the fixing groove 23 is movably arranged in the fixing groove 23, and the fixing block 24 is fixedly connected to the positioning plate 21. A sealing ring 25 is arranged in the valve cover 10, and the sealing ring 25 is sleeved between the valve stem 7 and the valve cover 10. When the fixing block 24 is in the fixing groove 23, the torsion plate 20 is rotated, and the torsion plate 20 drives the fixing block 24 to rotate 90 degrees, so that the fixing block 24 is fixed in the fixing groove 23, and the sealing ring 25 can seal between the valve stem 7 and the valve cover 10.

[0036] In this embodiment, one end of the ventilation pipe 2 and the intake pipe 3 are both provided with a mounting assembly, and the mounting assembly includes a connector 26 threadedly connected to the ventilation pipe 2 and the intake pipe 3, the interior of the connector 26 is an inner hexagon, and a first sealing ring 27 is provided on the side of the connector 26. The connector 26 can be rotated by the inner hexagon of the connector 26 to fix the connector 26 on the ventilation pipe 2 and the intake pipe 3, and the first sealing ring 27 can seal the connector 26 and the gas pipeline.

[0037] In this embodiment, the installation assembly also includes a hexagonal tube 28, which is movably sleeved on the outside of the connecting piece 26, and a second sealing ring 29 is sleeved between the hexagonal tube 28 and the connecting piece 26. A thread 30 is provided inside the hexagonal tube 28. The rotating hexagonal tube 28 is connected to the gas pipeline through the thread 30, and the second sealing ring 29 can seal the hexagonal tube 28 and the connecting piece 26.

[0038] In this embodiment, an anti-leakage component is arranged inside the air intake pipe 3, and the leakage gas component includes a sealing plate 31 and a sealing chamber 32. The sealing plate 31 is arranged on one side of the sealing chamber 32. A motor 33 is fixedly arranged in the sealing chamber 32. The motor 33 is connected to the PLC controller 15 through a wire. When a gas leak occurs, the PLC controller 15 controls the motor 33 to start and operate the anti-leakage component.

[0039] In this embodiment, the driving end of the motor 33 is fixedly connected to a rotating shaft 34, and the rotating shaft 34 passes through the sealing plate 31 and is fixedly connected to a driving gear 35. The driving gear 35 is meshingly connected to two driven gears 36, and each of the driven gears 36 is fixedly connected to a screw 37. Each of the screws 37 is rotatably connected to the sealing plate 31, and each of the screws 37 is threadably connected to a moving seat 38. Two moving seats 38 are fixedly connected to a sealing shaft 39. When an air leakage occurs, the motor 33 starts, and the motor 33 drives the rotating shaft 34 to rotate, and at the same time drives the driving gear 35, the driven gear 36 and the screw 37 to rotate, so that the sealing shaft 39 fixedly connected to the moving seat 38 moves along the screw 37.

[0040] In this embodiment, a ventilation pipeline 40 is provided inside the sealing shaft 39, and a positioning ring 41 and a third sealing ring 42 are provided on the outside of the sealing shaft 39. The gas enters the ventilation pipe through the ventilation pipeline 40. When the sealing shaft 39 seals the sealing tube 43, the positioning ring 41 can position the sealing shaft 39, and the third sealing ring 42 seals between the sealing shaft 39 and the sealing tube 43.

[0041] In this embodiment, the sealing shaft 39 is plugged in and out with a sealing tube 43, and the sealing tube 43 is fixedly connected to the intake pipe 3. The sealing shaft 39 is inserted into the sealing tube 43 to allow the sealing tube 43 to be plugged in, and the sealing shaft 39 is pulled out from the sealing tube 43 to allow the gas to pass through.

[0042] In this embodiment, air inlet holes 44 are evenly arranged on the sealing tube 43, and the sealing tube 43 is rotatably connected to the two screws 37. A sealing plug 45 is fixedly arranged inside the sealing tube 43. When the sealing shaft 39 is inserted into the sealing tube 43, the sealing plug 45 can seal the ventilation pipeline 40. When the sealing shaft 39 is pulled out of the sealing tube 43, the gas can enter from the air inlet hole 44.

[0043] Embodiment 2:

[0044] In summary, during use, when it is necessary to install a natural gas valve, place the connecting piece 26, the first sealing ring 27 and the second sealing ring 29 inside the hexagonal tube 28 and install them by threading with the ventilation pipe 2 and one end of the intake pipe 3, adjust the position and angle of the valve, make the thread 30 of the hexagonal tube 28 contact with the gas pipeline, rotate the hexagonal tube 28, and tighten the hexagonal tube 28 with the gas pipeline through the thread, so that both sides of the first sealing ring 27 are in close contact with the gas pipeline and the connecting piece 26, and the installation of the valve is completed.

[0045] Embodiment three:

[0046] In summary, when in use, when gas is needed, hold the valve handle 11, pull the valve handle clamp 16 with your fingers, the spring 18 is compressed, the valve handle clamp 16 rotates around the hinge 17, the valve handle clamp 16 drives the rotating rod 19, the torsion plate 20, the positioning plate 21 and the fixing block 24 away from the fixing ring 22, rotate the valve handle 11 to the positioning column 14, the valve handle 11 drives the valve stem 7, the valve core 4 and the rotating block 6 to rotate, so that the through hole 5 is connected with the vent pipe 2, and the valve is opened. At this time, release the valve handle 11 and the valve handle clamp 16, and the valve handle clamp 16 can return to its original position under the action of the spring 18, so that the fixing block 24 enters the fixing groove 23, and the valve handle 11 is rotated. Move the twist plate 20, which drives the rotating rod 19, the positioning plate 21 and the fixing block 24 to rotate, so that the fixing block 24 is stuck out of the fixing groove 23, thereby fixing the valve handle 11. At this time, natural gas is input through the air inlet pipe 3, the air inlet hole 44, the vent pipe 2 and the through hole 5 for normal use. When the valve needs to be closed during use, the twist plate 20 is rotated to separate the fixing block 24 from the fixing groove 23. Similarly, the valve handle 11 is held by hand, the valve handle clamp 16 is lifted, and the valve handle 11 is rotated to the other positioning column 14, so that the through hole 5 is not connected with the vent pipe 2, and the valve is closed. The valve handle clamp 16 is released and the twist plate 20 is rotated to fix the valve handle 11.

[0047] Embodiment 4:

[0048] In summary, when in use, the gas valve needs to be opened, and closed when not in use, which is safer. Since the gas valve needs to be opened and closed frequently, the valve core and the valve body will be worn due to long-term friction. When the gas leaks out from the gap between the valve core and the valve body, the gas will enter the trigger chamber 8. Since the gas is a high-pressure gas, the movable plate 9 will move to the right under the action of the gas, thereby triggering the alarm light 12 and the buzzer 13. The alarm light 12 lights up, the buzzer 13 sounds, and the data is transmitted to the PLC controller 15 at the same time. The PLC controller 15 starts the motor 33, and the driving end of the motor 33 drives the shaft 34 to rotate, and at the same time drives the driving end 34 to rotate. The moving gear 35, the driven gear 36 and the screw 37 rotate, so that the sealing shaft 39 fixedly connected with the moving seat 38 moves along the screw 37 and is inserted into the sealing tube 43. The plug 45 can seal the ventilation pipe 40. The positioning ring 41 positions the sealing shaft 39. The third sealing ring 42 seals between the sealing shaft 39 and the sealing tube 43, so that the sealing shaft 39 seals the sealing tube 43, thereby sealing the intake pipe 3. When the valve body 1 is repaired or the alarm is lifted, the PLC controller 15 starts the motor 33, so that the sealing shaft 39 is extracted from the sealing tube 43 along the screw 37, and the gas can enter the ventilation pipe 3 through the air inlet hole 44 and the ventilation pipe 40, so as to be used normally.

[0049] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, matching connection of bolts and nuts, bolt or screw connection or other well-known connection methods, which will not be described one by one here. For all the fixed connections mentioned above, welding is given priority. The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can make equivalent replacement or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered within the protection scope of the present invention.

Claims

1. An anti-leakage valve with an alarm function, comprising a valve body (1), characterized in that: The left end of the valve body (1) is fixedly connected to a vent pipe (2), the lower end of the vent pipe (2) is fixedly connected to an intake pipe (3), the vent pipe (2) and the intake pipe (3) are communicated, a valve core (4) is rotatably arranged in the valve body (1), a through hole (5) is arranged in the valve core (4), a rotating block (6) is fixedly connected to the left end of the valve core (4), a valve stem (7) is fixedly connected to the right end of the valve core (4), the rotating block (6) is rotatably connected to the inside of the vent pipe (2), a trigger chamber (8) is arranged at the right end of the valve core (4), a movable plate (9) is arranged in the trigger chamber (8), the movable plate (9) is movably connected to the valve body (1) and the valve stem (7), and a valve cover is arranged at the right end of the valve body (1). (10), a valve handle (11) is arranged at the right end of the valve cover (10), the valve stem (7) passes through the movable plate (9), the valve body (1) and the valve cover (10) in sequence and is fixedly connected to the valve handle (11), the valve stem (7) is rotatably connected to the valve body (1) and the valve cover (10), an alarm light (12) and a buzzer (13) are arranged on the valve body (1), the alarm light (12) and the buzzer (13) both pass through the right side of the valve body (1) and extend into the trigger chamber (8), the valve body (1) is also provided with two positioning columns (14), a PLC controller (15) is arranged at the upper end of the air intake pipe (3), and the PLC controller (15) is connected to the alarm light (12) and the buzzer (13) through a wire.

2. The anti-leakage valve with alarm function according to claim 1, characterized in that: The valve handle (11) is provided with a fixing assembly, and the fixing assembly includes a valve handle clamp (16). The valve handle clamp (16) is provided with a hinge (17) and a spring (18). The hinge (17) and the spring (18) are both fixedly connected to the valve handle (11) at one end and fixedly connected to the valve handle clamp (16) at the other end. The valve handle clamp (16) is rotatably connected to a rotating rod (19). The left end of the rotating rod (19) is fixedly connected to a torsion plate (20), and the right end passes through the valve handle clamp (16) and is fixedly connected to a positioning plate (21).

3. The anti-leakage valve with alarm function according to claim 1, characterized in that: The right end of the valve body (1) is fixedly sleeved with a fixing ring (22), the fixing ring (22) is provided with a T-shaped fixing groove (23), a fixing block (24) matched with the fixing groove (23) is movably provided in the fixing groove (23), the fixing block (24) is fixedly connected to the positioning plate (21), and a sealing ring (25) is provided in the valve cover (10), and the sealing ring (25) is sleeved between the valve stem (7) and the valve cover (10).

4. The anti-leakage valve with alarm function according to claim 3, characterized in that: One end of each of the ventilation pipe (2) and the intake pipe (3) is provided with a mounting assembly, the mounting assembly comprising a connecting piece (26) threadedly connected to the ventilation pipe (2) and the intake pipe (3), the interior of the connecting piece (26) is an inner hexagonal shape, and a first sealing ring (27) is provided on the side of the connecting piece (26).

5. The anti-leakage valve with alarm function according to claim 4, characterized in that: The mounting assembly further comprises a hexagonal tube (28), the hexagonal tube (28) being movably sleeved on the outside of the connecting piece (26), a second sealing ring (29) being sleeved between the hexagonal tube (28) and the connecting piece (26), and a thread (30) being arranged inside the hexagonal tube (28).

6. The anti-leakage valve with alarm function according to claim 1, characterized in that: An anti-leakage component is arranged inside the air intake pipe (3), and the leakage component comprises a sealing plate (31) and a sealing chamber (32). The sealing plate (31) is arranged on one side of the sealing chamber (32), and a motor (33) is fixedly arranged in the sealing chamber (32). The motor (33) is connected to the PLC controller (15) via a wire.

7. The anti-leakage valve with alarm function according to claim 6, characterized in that: The driving end of the motor (33) is fixedly connected to a rotating shaft (34), the rotating shaft (34) passes through the sealing plate (31) and is fixedly connected to a driving gear (35), the driving gear (35) is meshingly connected to two driven gears (36), each of the driven gears (36) is fixedly connected to a screw rod (37), each of the screw rods (37) is rotatably connected to the sealing plate (31), each of the screw rods (37) is threadably connected to a moving seat (38), and the two moving seats (38) are fixedly connected to a sealing shaft (39).

8. The anti-leakage valve with alarm function according to claim 1, characterized in that: A ventilation pipeline (40) is arranged inside the sealing shaft (39), and a positioning ring (41) and a third sealing ring (42) are sleeved on the outside of the sealing shaft (39).

9. The anti-leakage valve with alarm function according to claim 8, characterized in that: The sealing shaft (39) is plugged in and out of a sealing tube (43), and the sealing tube (43) is fixedly connected to the air intake pipe (3).

10. The anti-leakage valve with alarm function according to claim 9, characterized in that The sealing tube (43) is evenly provided with air inlet holes (44), the sealing tube (43) is rotatably connected to two screw rods (37), and a sealing plug (45) is fixedly provided inside the sealing tube (43).

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