A stop valve with leakage warning function

Abstract

The present invention relates to the field of stop valves, specifically a stop valve with a leakage warning function, comprising a valve body, a first pipe and a second pipe, a valve cover fixedly connected to the top of the valve body, a threaded rod threaded through the top of the valve cover, a sealing assembly installed on the side wall of the threaded rod, a plugging assembly installed on the other end of the valve body, and the plugging assembly fixedly connected to the second pipe. The present invention sets an early warning assembly, and the device can be used as a backup warning by setting the early warning assembly. Compared with early warning monitoring by sensors, the internal integration of components of sensors is high, and they can be damaged by external factors, affecting leakage warning. The early warning assembly has a simple structure, and when the sensor is working normally, the warning effect can be improved. When the sensor is damaged, a backup early warning can be performed to ensure the use of the stop valve, avoid the failure to issue an early warning in time after a leak occurs, and improve the practicality of the device.

Description

Technical Field

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

[0002] The stop valve relies on the movement of the valve disc on the valve seat to control the flow of fluid. The valve disc moves linearly along the center line of the valve seat, changing the distance between the valve disc and the valve seat, thereby changing the cross-sectional area of ​​the flow channel to achieve control and cutoff of the flow.

[0003] For example, the stop valve with high-pressure warning proposed in announcement number CN221591924U belongs to the technical field of stop valves. The stop valve with high-pressure warning includes a valve body, a circular groove is formed on one side of the flange of the valve body, a piston cylinder is threadedly connected to the outer side of the valve body, the interior of the piston cylinder is connected to the interior of the valve body, a piston is slidably connected to the inner side of the piston cylinder, a first spring, a first conductive block and a connecting rod are fixed to one side of the piston, one end of the first spring is fixedly connected to the inner side of the piston cylinder, a second conductive block is also fixed to the inner side of the piston cylinder, the second conductive block electrically cooperates with the first conductive block, the connecting rod extends through the interior of the piston cylinder to the outside and is fixed with a lever, and an installation box is also fixed to the outer side of the valve body. When the pressure in the valve body increases, the utility model generates an electrical signal and sends it to the terminal through a communication unit, thereby timely alerting the staff to avoid excessive pressure damaging the valve body and causing economic losses.

[0004] At present, the early warning mechanism on the existing stop valve has poor protection performance. It is easily damaged when subjected to external force impact or high and low temperature environments, which affects the service life of the early warning mechanism. If the early warning device loses its function, the stop valve will leak when the stop valve is open, and it will not be able to play an effective early warning role. In addition, when the valve disc is damaged and the stop valve leaks, after the early warning is issued, the staff needs to rush to and repair it, but there is still a period of time from the beginning of the leakage to the arrival of the staff for repair, and the medium has already leaked. There is a lack of immediate remedial measures when the leak occurs. Moreover, if the valve disc of the stop valve is damaged and leaks, part of the medium flows into the second pipeline. For the chemical process, the medium metering is strictly controlled. After the leakage occurs, the medium flowing into the second pipeline needs to be processed in time to avoid affecting the process production.

[0005] In view of the above problems, a stop valve with a leakage alarm function is proposed. Summary of the Invention

[0006] The object of the present invention is to provide a stop valve with a leakage warning function. By adopting this device, the problem that if the early warning device fails to work and the stop valve is open, the stop valve leaks and cannot play an effective early warning role is solved. In addition, there is still a period of time between the start of the leakage and the arrival of the staff for maintenance, and the medium has already leaked. Moreover, if the valve disc of the stop valve is damaged and leakage occurs, part of the medium will flow into the second pipeline, affecting the chemical operation.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a stop valve with a leakage warning function, comprising a valve body, a first pipeline and a second pipeline, the top end of the valve body being fixedly connected to a valve cover, the top end of the valve cover being threadedly connected to a threaded rod, one end of the threaded rod being fixedly connected to a handle, and the other end being fixedly connected to a valve disc, one end of the valve body being fixedly connected to the first pipeline, the top end of the valve cover being installed with an early warning assembly, the side wall of the threaded rod being installed with a sealing assembly, the other end of the valve body being installed with a blocking assembly, and the blocking assembly being fixedly connected to the second pipeline.

[0008] Furthermore, the early warning component includes a sealing plate, which is slidably connected to the side wall of the threaded rod, and the sealing plate is sealed and slidably connected to the inner wall of the valve cover. The top wall of the valve cover is fixedly connected to the third electrode plate, the side wall of the threaded rod is fixedly connected to the fourth electrode plate, and the top of the sealing plate is symmetrically fixedly connected to a connecting rod.

[0009] Furthermore, one end of each connecting rod passes through the top wall of the valve cover and is fixedly connected to the first electrode sheet, the top of the valve cover is symmetrically fixedly connected to the bracket, the bottom wall of each bracket is fixedly connected to the second electrode sheet, the top of each bracket is fixedly connected to the first electromagnet, and the side walls of the valve cover are symmetrically fixedly connected to the mounting plate.

[0010] Furthermore, each bottom wall of the mounting plate is symmetrically fixedly connected to a first spring, the two first springs located on the same side are commonly fixedly connected to a movable plate, sliding rods are symmetrically fixedly connected between the bracket and the mounting plate, each movable plate is slidably connected to the adjacent sliding rods, each bottom wall of the movable plate is fixedly connected to a first permanent magnet, the top and bottom walls of the movable plate are symmetrically fixedly connected to an impact plate, and each top wall of the bracket and the bottom wall of the mounting plate are symmetrically fixedly connected to an alarm.

[0011] Furthermore, the sealing assembly includes a slide groove, which is opened on the bottom wall of the sealing plate. The inner side wall of the slide groove is symmetrically provided with installation grooves. Each inner side wall of the installation groove is symmetrically fixedly connected with a third spring, and the two third springs are jointly fixedly connected to the limiting plate.

[0012] Furthermore, each inner side wall of the installation groove is fixedly connected to a second electromagnet, each side wall of the limit plate is fixedly connected to a second permanent magnet, the inner top wall of the slide groove is symmetrically fixedly connected to a second spring, and multiple second springs are commonly fixedly connected to a rubber plug, and a limit groove is provided on the side wall of the rubber plug, and the limit plate is clamped inside the limit groove.

[0013] Furthermore, the sealing assembly includes an installation box, which is fixedly connected to the other end of the valve body, and the other side of the installation box is fixedly connected to the second pipe. The inner wall of the installation box is fixedly connected to a partition, and the side wall of the partition is equidistantly provided with multiple first through holes, and the inner wall of the installation box is fixedly connected to a third electromagnet.

[0014] Furthermore, the inner side wall of the installation box is symmetrically fixedly connected with a fourth spring, the two fourth springs are commonly fixedly connected with a connecting plate, the side wall of the connecting plate is fixedly connected with a third permanent magnet, and the side wall of the connecting plate is fixedly connected with a dislocation plate.

[0015] Furthermore, the offset plate is provided with a plurality of second through holes at equal intervals, the first through holes and the second through holes are staggered, a pull rod is slidably connected to the top wall of the installation box, a push plate is fixedly connected to the side wall of the pull rod, and a support spring is symmetrically fixedly connected to the top wall of the push plate.

[0016] Furthermore, each of the support springs is fixedly connected to the top wall of the installation box, and a plurality of blocking plates are fixedly connected to the bottom wall of the push plate at equal intervals, and each of the blocking plates is located directly above an adjacent first through hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By setting up an early warning component, the device can be used as a backup warning by setting up an early warning component, and compared with early warning monitoring by sensors, the internal integrated components of the sensor are relatively high and may be damaged by external factors, affecting the leakage early warning. The early warning component has a simple structure, and when the sensor is working normally, it can improve the warning effect, and when the sensor is damaged, a backup early warning can be performed to ensure the use of the stop valve, avoid the failure to issue an early warning in time after a leak occurs, and improve the practicality of the device; by setting up a sealing component, when the early warning component alarms, the second electromagnet is energized, the second permanent magnet and the limit plate will move to the inside of the installation groove, and the limit on the rubber plug will be released. When the limit plate releases the limit on the rubber plug, the rubber plug will be pushed downward by the elastic action of the second spring until the rubber plug contacts the valve disc, thereby sealing the leakage position of the valve disc and the valve body, preventing continuous leakage of the medium, and playing a leak-proof role;

[0019] By setting up a blocking component, at the moment when the early warning component sounds an alarm, the third electromagnet is energized, and the magnetic attraction generated is used to pull the dislocation plate to move. At this time, the fourth spring is in a compressed state, and the second through hole and the first through hole on the dislocation plate are connected to each other from the staggered position. At this time, the limit on the blocking plate is released, and under the elastic action of the supporting spring, the push plate and the blocking plate are pushed downward, so that multiple blocking plates are synchronously moved downward to block the inside of the installation box, thereby blocking the overflowing medium, preventing the medium from flowing into the second pipeline and affecting the subsequent chemical reaction, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 is a cross-sectional view of the valve body of the present invention;

[0023] Figure 4 is a side sectional view of the valve body of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the early warning component in the present invention;

[0025] Figure 6 This is a schematic diagram of the main structure of the early warning component in the present invention;

[0026] Figure 7 for Figure 4 A partial enlarged schematic diagram of part A;

[0027] Figure 8 Schematic diagram of the structure of the sealing assembly of the present invention;

[0028] Figure 9 is a cross-sectional view of the sealing assembly of the present invention;

[0029] Figure 10 for Figure 9 A partial enlarged schematic diagram of part B;

[0030] Figure 11 for Figure 2 A partial enlarged schematic diagram of part C in the middle;

[0031] Figure 12 is a cross-sectional view of the blocking assembly of the present invention;

[0032] Figure 13 A bottom view of the blocking assembly of the present invention;

[0033] Figure 14 It is a schematic diagram of the main structure of the blocking component in the present invention.

[0034] In the figure: 1. Valve body; 11. Valve cover; 12. Threaded rod; 13. Handle; 14. Valve disc; 2. First pipe; 3. Second pipe; 4. Warning assembly; 41. Sealing plate; 42. Connecting rod; 43. First electrode sheet; 44. Bracket; 45. Second electrode sheet; 46. First electromagnet; 47. Mounting plate; 48. Sliding rod; 49. First spring; 410. Moving plate; 411. Impact plate; 412. Alarm; 413. Third electrode sheet; 414. Fourth electrode sheet; 415. First permanent magnet; 5. Sealing Assembly; 51. Slide groove; 52. Mounting groove; 53. Second spring; 54. Rubber plug; 55. Limiting groove; 56. Second electromagnet; 57. Third spring; 58. Second permanent magnet; 59. Limiting plate; 6. Sealing assembly; 61. Mounting box; 62. Partition; 63. First through hole; 64. Fourth spring; 65. Connecting plate; 66. Third electromagnet; 67. Third permanent magnet; 68. Offset plate; 69. Second through hole; 610. Pull rod; 611. Support spring; 612. Push plate; 613. Sealing plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] In order to solve the technical problems that the warning mechanism on the existing stop valve has poor protection performance, is easily damaged when subjected to external impact or high and low temperature environment, and affects the service life of the warning mechanism, if the warning device loses its function, the stop valve will leak when the stop valve is open, and it will not be able to play an effective warning role. Figure 1 - Figure 7 As shown, the following preferred technical solutions are provided:

[0037] A stop valve with a leakage alarm function includes a valve body 1, a first pipe 2 and a second pipe 3. The top of the valve body 1 is fixedly connected to a valve cover 11, and the top of the valve cover 11 is threadedly connected to a threaded rod 12. One end of the threaded rod 12 is fixedly connected to a handle 13, and the other end is fixedly connected to a valve disc 14. One end of the valve body 1 is fixedly connected to the first pipe 2. When the stop valve is not working, the medium enters along the first pipe 2 and enters the second pipe 3 through the stop valve to carry out the medium flow. When the stop valve is working, the handle 13 is rotated to make the threaded rod 12 and the valve disc 14 move downward until the valve disc 14 is against the valve body 1. The interior is partitioned to achieve the cut-off operation. An early warning component 4 is installed on the top of the valve cover 11. By setting the early warning component 4, the device can be used as a backup warning. Compared with the early warning monitoring by the sensor, the internal integration of the sensor components is high and will be damaged by external factors, affecting the leakage warning. The early warning component 4 has a simple structure, and when the sensor is working normally, it can improve the warning effect, and when the sensor is damaged, it can perform a backup warning to ensure the use of the stop valve, avoid the failure to issue a warning in time after leakage, and improve the practicality of the device.

[0038] A sealing assembly 5 is installed on the side wall of the threaded rod 12. By setting the sealing assembly 5, when the early warning assembly 4 sounds an alarm, the second electromagnet 56 is energized, and the second permanent magnet 58 and the limit plate 59 will move to the inside of the installation groove 52, releasing the limit on the rubber plug 54. When the limit plate 59 releases the limit on the rubber plug 54, the rubber plug 54 will be pushed downward by the elastic action of the second spring 53 until the rubber plug 54 contacts the valve disc 14, sealing the leakage position of the valve disc 14 and the valve body 1, preventing continuous leakage of the medium, and playing an anti-leakage role.

[0039] A blocking component 6 is installed at the other end of the valve body 1, and the blocking component 6 is fixedly connected to the second pipe 3; by setting the blocking component 6, at the moment when the early warning component 4 sounds an alarm, the third electromagnet 66 is energized, and the magnetic attraction generated is used to pull the offset plate 68 to move. At this time, the fourth spring 64 is in a compressed state, and the second through hole 69 and the first through hole 63 on the offset plate 68 are interconnected from the staggered position. At this time, the limit on the blocking plate 613 is released, and under the elastic action of the support spring 611, the push plate 612 and the blocking plate 613 are pushed downward, so that multiple blocking plates 613 move downward synchronously to block the inside of the installation box 61, thereby blocking the overflowing medium and preventing the medium from flowing into the second pipe 3, affecting subsequent chemical reactions, and improving the practicality of the device.

[0040] The early warning component 4 includes a sealing plate 41, which is slidably connected to the side wall of the threaded rod 12. The sealing plate 41 is sealed and slidably connected to the inner wall of the valve cover 11. The top wall of the valve cover 11 is fixedly connected to the third electrode plate 413, the side wall of the threaded rod 12 is fixedly connected to the fourth electrode plate 414, and the top of the sealing plate 41 is symmetrically fixedly connected to the connecting rod 42.

[0041] One end of each connecting rod 42 passes through the top wall of the valve cover 11 and is fixedly connected to the first electrode sheet 43. The top of the valve cover 11 is symmetrically fixedly connected to a bracket 44. The bottom wall of each bracket 44 is fixedly connected to a second electrode sheet 45. The top of each bracket 44 is fixedly connected to a first electromagnet 46. The side walls of the valve cover 11 are symmetrically fixedly connected to a mounting plate 47.

[0042] The bottom wall of each mounting plate 47 is symmetrically fixedly connected with a first spring 49, and the two first springs 49 located on the same side are commonly fixedly connected with a movable plate 410. The sliding rods 48 are symmetrically fixedly connected between the bracket 44 and the mounting plate 47. Each movable plate 410 is slidably connected with the adjacent sliding rods 48. The bottom wall of each movable plate 410 is fixedly connected with a first permanent magnet 415. The top and bottom walls of the movable plate 410 are symmetrically fixedly connected with an impact plate 411, and the top wall of each bracket 44 and the bottom wall of the mounting plate 47 are symmetrically fixedly connected with an alarm 412.

[0043] In this solution, most existing stop valves are equipped with early warning mechanisms for leakage warning, but most of them are implemented by sensors. If the internal part of the sensor is damaged, it cannot effectively play the role of leakage warning operation, which will cause leakage accidents. In order to improve the leakage warning, a sealing plate 41 is set inside the valve cover 11, and the sealing plate 41 slides on the side wall of the threaded rod 12. When the stop valve is working, the valve disc 14 cuts off the inside of the valve body 1, so that the medium is stored in the first pipe 2. Before the valve disc 14 cuts off the operation, the first electrode 41 can be pressed down. The first electrode plate 43 is rotated to make the connecting rod 42 and the sealing plate 41 move downward to the lower limit position synchronously, so that the sealing plate 41 is in the working warning position, and then the threaded rod 12 is rotated to make the valve disc 14 cut off the inside of the valve body 1. If the medium leaks inside the stop valve, the medium overflows along the valve disc 14. Since the inside of the stop valve is in a closed state, as the medium overflows to the upper half of the valve body 1, the pressure increases, which will push the sealing plate 41 upward. At this time, the connecting rod 42 and the first electrode plate 43 move upward synchronously, and then the first electrode plate 43 contacts the second electrode plate 45. The first electromagnet 46 is energized to generate magnetic poles, wherein the adjacent surface poles of the first electromagnet 46 and the first permanent magnet 415 are of the same polarity, thereby pushing the movable plate 410 upward and driving the impact plate 411 to impact the upper alarm bell 412. At this time, the first spring 49 is in a compressed state. As the current controlling the first electromagnet 46 changes, the magnitude of the magnetic repulsion of the first electromagnet 46 changes, and with the cooperation of the first spring 49, the movable plate 410 is caused to reciprocate up and down, thereby continuously impacting the upper and lower alarm bells 412, causing the bells to ring and issuing a leakage warning. The device can be used as a backup warning by setting an early warning component 4, and compared with the early warning monitoring by the sensor, the internal integration of the sensor is high and it will be damaged by external factors, affecting the leakage warning. The early warning component 4 has a simple structure and can improve the warning effect when the sensor is working normally. When the sensor is damaged, a backup early warning can be performed to ensure the use of the stop valve, avoid the failure to issue an early warning in time after leakage occurs, and improve the practicality of the device.

[0044] When the stop valve is in the shutoff operation, the third electrode sheet 413 and the fourth electrode sheet 414 are in contact, and a closed circuit is formed between the first electrode sheet 43, the second electrode sheet 45 and the first electromagnet 46; when the stop valve stops working, the third electrode sheet 413 and the fourth electrode sheet 414 are disconnected, and a short circuit is formed between the first electrode sheet 43, the second electrode sheet 45 and the first electromagnet 46, so that the early warning component 4 will not work, avoiding the early warning component 4 from issuing an early warning as soon as it detects that a medium is flowing through the second pipeline 3, thereby improving the use effect of the device.

[0045] In order to solve the problem that when the valve disc 14 is damaged and the stop valve leaks, after the early warning, the staff needs to rush to and repair it, but there is still a period of time between the start of the leakage and the arrival of the staff for repair, and the medium has already leaked. There is a lack of technical problems such as the immediate remedial measures when the leakage occurs. Figure 8 - Figure 10 As shown, the following preferred technical solutions are provided:

[0046] The sealing assembly 5 includes a slide groove 51, which is opened on the bottom wall of the sealing plate 41. The inner wall of the slide groove 51 is symmetrically provided with mounting grooves 52. The inner wall of each mounting groove 52 is symmetrically fixedly connected with a third spring 57. The two third springs 57 are jointly fixedly connected to the limiting plate 59.

[0047] The inner wall of each mounting groove 52 is fixedly connected to a second electromagnet 56, the side wall of each limiting plate 59 is fixedly connected to a second permanent magnet 58, the inner top wall of the slide groove 51 is symmetrically fixedly connected to a second spring 53, and multiple second springs 53 are commonly fixedly connected to a rubber plug 54. The side wall of the rubber plug 54 is provided with a limiting groove 55, and the limiting plate 59 is clamped inside the limiting groove 55.

[0048] In this solution, when the early warning assembly 4 sounds an alarm, it takes some time for the staff to rush to the stop valve to be repaired. During this time, some medium leaks, which the existing stop valve cannot handle. When the early warning assembly 4 sounds an alarm, the second electromagnet 56 is energized to generate magnetic poles. The second electromagnet 56 and the second permanent magnet 58 are adjacent to each other with opposite magnetic poles, so that the second permanent magnet 58 and the limit plate 59 move into the installation groove 52, releasing the limit on the rubber plug 54. At this time, the third spring 57 is in a compressed state. When the limit plate 59 releases the limit on the rubber plug 54, the rubber plug 54 is pushed downward by the elastic action of the second spring 53 until the rubber plug 54 contacts the valve disc 14, thereby blocking the leakage position of the valve disc 14 and the valve body 1. The elastic force of the second spring 53 is greater than the pressure thrust generated when the stop valve leaks, so that the second spring 53 can stably fix the rubber plug 54 to the leakage position of the valve body 1 and the valve disc 14, preventing the medium from continuing to leak, thereby playing a leak prevention role.

[0049] In order to solve the problem that if the valve disc 14 of the stop valve is damaged and leaks occur, part of the medium flows into the second pipe 3, for chemical processes, the medium metering is strictly controlled. After the leak occurs, the medium flowing into the second pipe 3 needs to be processed in time to avoid technical problems that affect process production, such as Figure 11 - Figure 14 As shown, the following preferred technical solutions are provided:

[0050] The sealing assembly 6 includes an installation box 61, which is fixedly connected to the other end of the valve body 1, and the other side of the installation box 61 is fixedly connected to the second pipe 3. The inner wall of the installation box 61 is fixedly connected to a partition 62, and the side wall of the partition 62 is equidistantly provided with a plurality of first through holes 63. The inner wall of the installation box 61 is fixedly connected to a third electromagnet 66.

[0051] The inner wall of the installation box 61 is symmetrically fixedly connected with fourth springs 64 , and the two fourth springs 64 are commonly fixedly connected with a connecting plate 65 , and the side wall of the connecting plate 65 is fixedly connected with a third permanent magnet 67 , and the side wall of the connecting plate 65 is fixedly connected with a dislocation plate 68 .

[0052] The offset plate 68 is provided with a plurality of second through holes 69 at equal intervals, the first through holes 63 and the second through holes 69 are staggered, a pull rod 610 is slidingly connected through the top wall of the installation box 61, a push plate 612 is fixedly connected to the side wall of the pull rod 610, and a support spring 611 is symmetrically fixedly connected to the top wall of the push plate 612.

[0053] Each support spring 611 is fixedly connected to the top wall of the installation box 61 , and a plurality of blocking plates 613 are fixedly connected to the bottom wall of the push plate 612 at equal intervals. Each blocking plate 613 is located directly above the adjacent first through hole 63 .

[0054] In this solution: due to the leakage of the stop valve, part of the medium inevitably flows into the second pipe 3. At the moment when the early warning component 4 sounds the alarm, the third electromagnet 66 is energized, and the generated magnetic pole is opposite to the adjacent surface of the third permanent magnet 67. The magnetic attraction generated is used to pull the offset plate 68 to move. At this time, the fourth spring 64 is in a compressed state, and the second through hole 69 and the first through hole 63 on the offset plate 68 are interconnected from the staggered position. At this time, the limit on the sealing plate 613 is released, and under the elastic action of the support spring 611, the push plate 612 and the sealing plate 613 are pushed downward, so that multiple sealing plates 613 move downward synchronously to block the inside of the installation box 61, thereby blocking the overflowing medium and preventing the medium from flowing into the second pipe 3, affecting subsequent chemical reactions, and improving the practicality of the device.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A stop valve with a leakage warning function, comprising a valve body (1), a first pipe (2) and a second pipe (3), characterized in that: The top of the valve body (1) is fixedly connected to a valve cover (11), the top of the valve cover (11) is threadedly connected to a threaded rod (12), one end of the threaded rod (12) is fixedly connected to a handle (13), and the other end is fixedly connected to a valve flap (14), one end of the valve body (1) is fixedly connected to the first pipe (2), the top of the valve cover (11) is installed with an early warning component (4), the side wall of the threaded rod (12) is installed with a sealing component (5), the other end of the valve body (1) is installed with a blocking component (6), and the blocking component (6) is fixedly connected to the second pipe (3); The early warning assembly (4) includes a sealing plate (41), the sealing plate (41) is slidably connected to the side wall of the threaded rod (12), the sealing plate (41) is sealingly slidably connected to the inner wall of the valve cover (11), the top wall of the valve cover (11) is fixedly connected to a third electrode plate (413), the side wall of the threaded rod (12) is fixedly connected to a fourth electrode plate (414), and the top end of the sealing plate (41) is symmetrically fixedly connected to a connecting rod (42); One end of each connecting rod (42) passes through the top wall of the valve cover (11) and is fixedly connected to a first electrode sheet (43); the top of the valve cover (11) is symmetrically fixedly connected to a bracket (44); the bottom wall of each bracket (44) is fixedly connected to a second electrode sheet (45); the top of each bracket (44) is fixedly connected to a first electromagnet (46); and the side wall of the valve cover (11) is symmetrically fixedly connected to a mounting plate (47); The blocking assembly (6) includes a mounting box (61), the mounting box (61) is fixedly connected to the other end of the valve body (1), the other side of the mounting box (61) is fixedly connected to the second pipe (3), the inner wall of the mounting box (61) is fixedly connected to a partition (62), the side wall of the partition (62) is equidistantly provided with a plurality of first through holes (63), and the inner wall of the mounting box (61) is fixedly connected to a third electromagnet (66); The inner side wall of the installation box (61) is symmetrically fixedly connected to a fourth spring (64), the two fourth springs (64) are commonly fixedly connected to a connecting plate (65), the side wall of the connecting plate (65) is fixedly connected to a third permanent magnet (67), and the side wall of the connecting plate (65) is fixedly connected to a dislocation plate (68).

2. The stop valve with leakage warning function according to claim 1, characterized in that: The bottom wall of each mounting plate (47) is symmetrically fixedly connected to a first spring (49) located on the same side. The two first springs (49) are fixedly connected to a movable plate (410) together, a slide bar (48) is symmetrically fixedly connected between the bracket (44) and the mounting plate (47), each movable plate (410) is slidably connected to an adjacent slide bar (48), a first permanent magnet (415) is fixedly connected to the bottom wall of each movable plate (410), a strike plate (411) is symmetrically fixedly connected to the top wall and bottom wall of the movable plate (410), and an alarm bell (412) is symmetrically fixedly connected to the top wall of each bracket (44) and the bottom wall of the mounting plate (47).

3. The stop valve with leakage warning function according to claim 1, characterized in that: The sealing assembly (5) includes a slide groove (51), the slide groove (51) is opened on the bottom wall of the sealing plate (41), and the inner side wall of the slide groove (51) is symmetrically opened with a mounting groove (52), and the inner side wall of each mounting groove (52) is symmetrically fixedly connected to a third spring (57), and the two third springs (57) are commonly fixedly connected to a limit plate (59).

4. The stop valve with leakage warning function according to claim 3, characterized in that: The inner side wall of each mounting groove (52) is fixedly connected to a second electromagnet (56), the side wall of each limiting plate (59) is fixedly connected to a second permanent magnet (58), the inner top wall of the sliding groove (51) is symmetrically fixedly connected to a second spring (53), and a plurality of the second springs (53) are commonly fixedly connected to a rubber plug (54), and a limiting groove (55) is provided on the side wall of the rubber plug (54), and the limiting plate (59) is clamped inside the limiting groove (55).

5. The stop valve with leakage warning function according to claim 1, characterized in that: The dislocation plate (68) is provided with a plurality of second through holes (69) at equal intervals, the first through holes (63) and the second through holes (69) are arranged alternately, a pull rod (610) is slidably connected to the top wall of the installation box (61), a push plate (612) is fixedly connected to the side wall of the pull rod (610), and a support spring (611) is symmetrically fixedly connected to the top wall of the push plate (612).

6. The stop valve with leakage warning function according to claim 5, characterized in that: Each of the support springs (611) is fixedly connected to the top wall of the installation box (61), and a plurality of blocking plates (613) are fixedly connected to the bottom wall of the push plate (612) at equal intervals, and each of the blocking plates (613) is located at a corresponding position. Adjacent to and directly above the first through hole (63).

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