A high-sealing butterfly valve and its use method

Abstract

The present invention discloses a high-sealing butterfly valve and a method for using the same, and relates to the technical field of butterfly valves, including a valve housing, wherein the inner wall of the valve housing is provided with a separation assembly, wherein the separation assembly comprises two groups of semicircular arc-shaped frames 1 fixedly installed on the inner wall of the valve housing, a filter screen 1 is installed on the outer wall of the frame 1 away from each other, a frame 2 is slidably connected to the inner wall of the frame 1, a filter screen 2 is installed on the outer wall of one side of the frame 2, and a connecting rod is installed on the outer wall of one side of the filter screen. The present invention is provided with a frame 1, a filter screen 1, a frame 2 and a filter screen 2, and when the valve plate is opened, the extrusion of the filter screen 2 is gradually reduced, and a spring 1 pushes the filter screen 2 and the frame 2 to move in the rotation direction of the valve plate, so that the frame 2 and the frame 1 protect the sealing and fitting part of the valve housing and the valve body, and prevent the particle impurities in the fluid from adhering to the inside of the valve housing, thereby preventing the particle impurities from causing wear to the inside of the valve housing when the valve plate is closed, which is beneficial to improving the sealing and service life of the valve body.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valves, and in particular to a high-sealing butterfly valve and a use method thereof. Background Art

[0002] The butterfly valve is a relatively simple regulating valve, which is usually used to cut off or throttle various fluids in pipelines, such as water, various corrosive media, mud, oil, liquid metal, etc. Because there are particles in the fluid passing through the butterfly valve, the particles are easy to adhere to the inside of the butterfly valve. When the butterfly valve is closed, the particles are easy to cause wear to the inside of the valve shell, thus causing the sealing of the butterfly valve to deteriorate.

[0003] The defects of existing butterfly valves are:

[0004] The patent document US09551423B2 mainly considers how to design a lightweight butterfly valve, but does not consider how to prevent internal wear of the valve housing and thus improve the sealing performance of the butterfly valve;

[0005] Patent document KR101770338B1 mainly considers how to make the butterfly valve have a check function, but does not consider how to make the butterfly valve have the function of automatically cleaning the internal filter screen;

[0006] Patent document CN108644394A mainly considers how to realize the switching between manual and automatic control of the butterfly valve, but does not consider how to accurately control the opening angle of the valve.

[0007] Patent document CN117780947A mainly considers how to improve the stability of the butterfly valve when it is closed, but does not consider how to detect the sealing performance of the butterfly valve when it is closed. Summary of the invention

[0008] The object of the present invention is to provide a high-sealing butterfly valve and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a high-sealing butterfly valve, comprising a valve housing, the inner wall of which is mounted a separation assembly, the separation assembly comprising two sets of semicircular arc-shaped frames fixedly mounted on the inner wall of the valve housing, and the two sets of frames are open on one side close to each other;

[0010] A filter screen 1 is installed on the outer wall of the frame body 1 on the side away from each other, and the outer wall of the filter screen 1 is connected to the inner wall of the valve housing, the inner wall of the frame body 1 is slidably connected to the frame body 2, and the frame body 2 is located between the two groups of frame bodies 1, a filter screen 2 is installed on the outer wall of the frame body 2 on the side close to each other, and the outer wall of the filter screen 2 is slidably connected to the inner wall of the valve housing, a connecting rod is installed on the outer wall of the filter screen 2 on the side away from each other, and the connecting rod is embedded in the inner wall of the frame body 1, an arc plate is installed on the end of the connecting rod away from the filter screen 2, a spring 1 is installed on the outer wall of the arc plate on the side close to the filter screen 2, and the spring 1 is located above the connecting rod, the spring 1 is located inside the frame body 1, and one end of the spring 1 away from the arc plate is fixedly connected to the inside of the frame body 1;

[0011] The side of the frame body 2 close to the filter screen 1 is open, the outer wall of the frame body 2 is in contact with the inner wall of the frame body 1, and the frame body 2 is slidably connected with the frame body 1 and the inner wall of the valve housing;

[0012] The number of installation groups of the frame body 1, filter screen 1, frame body 2 and filter screen 2 are all two, and all of them are semicircular arc structures. One group of separation components is located on the left side of the valve plate, and the other group is located on the right side of the valve plate.

[0013] Preferably, a sealing box is installed on the inner wall of the valve housing, and the sealing box is located between filter screen one and filter screen two, a partition plate is installed on the inner wall of the sealing box, the top and bottom wall of the partition plate are slidably connected with a push rod, and one end of the push rod penetrates the inner wall of the sealing box and extends to the outside of the sealing box, the end of the push rod located outside the sealing box is connected to a rubber block, and the rubber blocks are respectively fitted with the outer walls of the filter screen one and the filter screen two on the side close to each other, an insulating pad is installed on the outer wall of the push rod on the side close to each other, spring two is installed on the left and right inner walls of the sealing box, and the end of the spring two away from the rubber block is connected to the outer wall of the insulating pad, an electromagnetic ring is installed inside the sealing box, and the electromagnetic ring is sleeved on the outer wall of the push rod, a timer is installed inside the sealing box, and the timer is electrically connected to the electromagnetic ring.

[0014] Preferably, the sealed box is located inside frame body one and frame body two, and an insulating coating is provided on the inner wall of the sealed box.

[0015] Preferably, a connecting seat is installed on the top of the valve housing, and the top of the connecting seat is connected to a top housing.

[0016] Preferably, a transmission assembly is provided inside the top shell, a valve stem is installed through the top of the transmission assembly, the valve stem is inserted into the shell top and the inside of the connecting seat, and the valve stem extends into the valve shell, an angle sensor and a valve plate are provided on the outer wall of the valve stem, and the angle sensor is located above the transmission assembly, the valve stem is located inside the valve shell, a display screen is installed on the top of the top shell, and the display screen is electrically connected to the angle sensor.

[0017] Preferably, an auxiliary plate is installed on the back of the valve plate, and the auxiliary plate is a semicircular arc structure, a through hole is opened on the outer wall of the auxiliary plate close to the valve plate, a mounting groove is opened inside the auxiliary plate, and the left outer wall of the mounting groove is connected with the right end of the through hole, an elastic film is installed on the inner wall of the through hole, and the elastic film is located on the left side of the mounting groove, a pressure sensor is installed on the inner wall of the mounting groove, and the input end of the pressure sensor is in contact with the outer wall of the elastic film, an alarm is installed on the top of the shell top, and the alarm is located on one side of the display screen, and the display screen, the alarm and the pressure sensor are electrically connected.

[0018] Preferably, the number of installation groups of frame 1, filter screen 1, frame 2 and filter screen 2 are all two, and all are semicircular arc structures, one group of separation components is located on the left side of the valve plate, and the other group is located on the right side of the valve plate.

[0019] Preferably, the transmission assembly includes a transmission worm wheel sleeved on the outer wall of the worm, a transmission worm is installed through the outer wall of the top shell, and the transmission worm is meshed with the transmission worm wheel, and a handwheel is connected to the right end of the transmission worm.

[0020] A method for using a high-sealing butterfly valve, the method for using the high-sealing butterfly valve is as follows:

[0021] S1. When using the butterfly valve, the valve stem is driven to rotate by rotating the transmission assembly, and the valve stem drives the valve plate to rotate to open the valve;

[0022] S2, the fluid passing through the inside of the valve housing flows from left to right through the gap between the valve plate and the inner wall of the valve housing;

[0023] S3. After the butterfly valve is used, the transmission assembly is rotated in the reverse direction to drive the valve plate to rotate in the reverse direction and close the butterfly valve;

[0024] S4. When the valve plate rotates in the opposite direction, the valve plate pushes the filter screen 2 and the frame 2 to move toward the frame 1, so that one side of the filter screen 2 fits against the outer wall of the frame 1, and the outer wall of the valve plate fits against the outer wall of the filter screen 2;

[0025] S5. When the valve plate returns to the closed state, the pressure data is obtained through the pressure sensor, and the pressure data is analyzed to see whether there is an increasing trend.

[0026] Preferably, in step S1, the following steps are also included:

[0027] S11, when the valve stem rotates, the rotation angle of the valve stem is detected by the rotation angle sensor, and the angle value is displayed on the display screen, thereby obtaining the valve plate opening angle;

[0028] In the step S2, the following steps are also included:

[0029] S21, when the fluid flows, the fluid is filtered by the filter screen 1 and the filter screen 2, and part of the inner wall of the valve housing is protected by the frame body 1 and the frame body 2;

[0030] In the step S5, the following steps are also included:

[0031] S51. When analysis shows that the pressure data obtained by the pressure sensor has an increasing trend, the alarm emits an audible and visual alarm to remind the staff that the sealing performance of the butterfly valve has deteriorated.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention is equipped with a separation component, including a frame body 1, a filter screen 1, a frame body 2 and a filter screen 2. When the valve plate is opened, the squeeze on the filter screen 2 is gradually reduced, and the spring 1 pushes the filter screen 2 and the frame body 2 to move in the rotation direction of the valve plate, so that the frame body 2 and the frame body 1 protect the sealing and fitting part of the valve shell and the valve body, avoiding the adhesion of particulate impurities in the fluid to the inside of the valve shell, thereby preventing the particulate impurities from causing wear to the inside of the valve shell when the valve plate is closed, which is beneficial to improving the sealing and service life of the valve body.

[0034] 2. The present invention is equipped with a sealing box, a second spring, a push rod, a rubber block, an electromagnetic ring and a timer. When the electromagnetic ring is connected, the adsorption push rod drives the rubber block to move, and the rubber block knocks the filter screen 1 and the filter screen 2. When the electromagnetic ring is disconnected, the second spring drives the push rod to reset. The time interval is set by the timer to connect or disconnect the electromagnetic ring and the micro-battery gap. The push rod drives the rubber block to intermittently knock the filter screen 1 and the filter screen 2 to prevent the particle impurities from clogging the filter screen 1 and the filter screen 2, thereby affecting the use effect of the separation component and improving the fluid transmission effect of the butterfly valve.

[0035] 3. The present invention is equipped with a valve stem, an angle sensor and a display screen. The angle sensor detects the rotation angle of the valve stem to obtain the opening angle of the valve plate, and displays the opening angle of the valve plate on the display screen, thereby achieving precise control of the opening angle of the valve plate and improving the intelligence of the butterfly valve.

[0036] 4. The present invention is equipped with an auxiliary plate, a pressure sensor and an elastic film. When the valve plate is in a closed state, the pressure sensor is started to obtain pressure data. When the sealing performance of the butterfly valve is reduced, the fluid flows to the right through the valve plate, flows to the inner wall of the through hole and squeezes the pressure sensor, thereby increasing the pressure data obtained by the pressure sensor. The alarm is used to remind the staff to replace the butterfly valve or its components in time, which is beneficial to improving the use effect of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a front structural schematic diagram of the present invention;

[0039] Figure 3 It is a schematic diagram of the separation component structure of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the frame 2 of the present invention;

[0041] Figure 5 It is a schematic diagram of the sealing box structure of the present invention;

[0042] Figure 6 It is a schematic diagram of the push rod structure of the present invention;

[0043] Figure 7 It is a schematic diagram of the auxiliary block structure of the present invention;

[0044] Figure 8 It is a schematic diagram of the transmission assembly structure of the present invention.

[0045] In the figure: 1. valve housing; 2. separation component; 3. frame body 1; 4. filter screen 1; 5. frame body 2; 6. filter screen 2; 7. connecting rod; 8. arc plate; 9. spring 1; 10. connecting seat; 11. top shell; 12. transmission component; 13. valve stem; 14. valve plate; 15. sealing box; 16. partition; 17. push rod; 18. rubber block; 19. insulating pad; 20. spring 2; 21. electromagnetic ring; 22. timer; 23. angle sensor; 24. display screen; 25. auxiliary plate; 26. through hole; 27. elastic film; 28. mounting groove; 29. ​​pressure sensor; 30. warning device; 31. transmission worm gear; 32. transmission worm; 33. handwheel. DETAILED DESCRIPTION

[0046] 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.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] See also Figure 1 , Figure 3 and Figure 4 , an embodiment of the present invention: a high-sealing butterfly valve, comprising a valve housing 1, a separation assembly 2 is installed on the inner wall of the valve housing 1, the separation assembly 2 is installed in two groups, and one group is located on the right side of the valve plate 14, and the other group is located on the left side of the valve plate 14, the separation assembly 2 comprises two groups of semicircular arc frames 3 fixedly installed on the inner wall of the valve housing 1, and the sides of the two groups of frames 3 close to each other are open, and the outer wall of the frame 3 away from each other is installed with a filter 4, and the outer wall of the filter 4 is connected to the inner wall of the valve housing 1, the filter 4 is used to filter and separate the fluid flowing through the inside of the butterfly valve housing 1, the inner wall of the frame 3 is slidably connected with a frame 2 5, and the frame 2 5 is located between the two groups of frames 3, the side of the frame 2 5 close to the filter 4 is open, the outer wall of the frame 2 5 is in contact with the inner wall of the frame 3, and the frame 2 5 slides with the frame 3 and the inner wall of the valve housing 1 Dynamic connection, the axial length of frame 13 and frame 25 is greater than the thickness of valve plate 14, a filter screen 26 is installed on the outer wall of the side where frame 25 is close to each other, filter screen 26 is located on the outer wall of frame 25 close to valve plate 14, and the outer wall of filter screen 26 is slidably connected to the inner wall of valve housing 1, filter screen 26 is used to discharge the fluid inside frame 13 and frame 25 to the right, a connecting rod 7 is installed on the outer wall of the side where filter screen 26 is away from each other, connecting rod 7 is located above frame 25, and connecting rod 7 is embedded in the inner wall of frame 13, an end of connecting rod 7 away from filter screen 26 is installed with an arc plate 8, a spring 19 is installed on the outer wall of the side where the arc plate 8 is close to filter screen 26, and spring 19 is located above connecting rod 7, one end of spring 19 away from arc plate 8 is fixedly connected to the inside of frame 13, spring 19 is located inside frame 13, and frame 13 provides protection for spring 19.

[0050] Furthermore, when the butterfly valve is not in use, the valve plate 14 is in a closed state, and the valve plate 14 fits against the inside of the valve housing 1. When the valve stem 13 drives the valve plate 14 to rotate, the outer wall of the valve plate 14 gradually separates from the outer wall of the filter screen 2 6, and the extrusion of the valve plate 14 on the filter screen 2 6 gradually decreases, so that the spring 19 pushes the filter screen 2 6 to move, and the filter screen 2 6 drives the frame 2 5 to slide along the inner wall of the frame 1 3 in a direction away from the frame 1 3, and the frame 2 5 fits against the inner wall of the valve housing 1. By providing the connecting rod 7, the stability of the movement of the frame 2 5 is improved and the frame 2 5 is limited. The filter screen 2 6 drives the frame 2 5 to move, so that the position of the inside of the valve housing 1 that was originally in contact with the outer wall of the valve plate 14 is located inside the frame 1 3 and the frame 2 5, and the frame 1 3 and the frame 2 5 are used to protect this part, and by providing the filter screen 1 4 and the filter screen 2 6, The fluid is filtered to prevent particulate impurities in the fluid from adhering to the position inside the valve housing 1 that was originally combined with the outer wall of the valve plate 14. When the valve plate 14 gradually rotates to a closed state, the valve plate 14 fits with the outer wall of the filter screen 2 6, and pushes the filter screen 2 6 to drive the frame 2 5 to move toward the direction close to the frame 1 3, so that the protected part inside the frame 2 5 gradually leaks out, and the outer wall of the valve plate 14 gradually fits with the protected part until the valve plate 14 returns to a closed state. By setting the filter screen 1 4 and the filter screen 2 6, the fluid impurities are intercepted, and by setting the frame 1 3 and the frame 2 5, the fitting part of the valve housing 1 and the valve plate 14 is protected to prevent particulate impurities from adhering to the inside of the valve body, thereby preventing the particulate impurities from wearing the inside of the valve housing 1 when the valve plate 14 is closed, which is beneficial to improving the sealing performance and service life of the valve body.

[0051] See also Figure 5 and Figure 6, an embodiment of the present invention: a high-sealing butterfly valve, the inner wall of the valve housing 1 is equipped with a sealing box 15, the sealing box 15 is located on the inner side of the frame 1 3 and the frame 2 5, and the sealing box 15 is located between the filter 1 4 and the filter 2 6, the inner wall of the sealing box 15 is provided with an insulating coating, and the inner wall of the sealing box 15 is equipped with a partition plate 16, by providing the partition plate 16, the interior of the sealing box 15 is divided into an upper and lower part, and the top and bottom of the partition plate 16 are both provided with an insulating coating, and the top and the bottom wall of the partition plate 16 are slidably connected with a push rod 17, the cross-sectional structure of the push rod 17 is T-shaped, the number of installation groups of the push rod 17 is two groups, one group is located above the partition plate 16, and the other group is located below the partition plate 16, and one end of the push rod 17 penetrates the inner wall of the sealing box 15 and extends to the outside of the sealing box 15, so that the ends of the two groups of push rods 17 that are far away from each other respectively penetrate the left and right inner walls of the sealing box 15, and extend to the sealing On the left and right sides of the box 15, one end of the push rod 17 located outside the sealed box 15 is connected to a rubber block 18, and the rubber block 18 is respectively fitted with the outer wall of the side where the filter screen 14 and the filter screen 26 are close to each other, and an insulating pad 19 is installed on the outer wall of the side where the push rod 17 is close to each other, and a spring 20 is installed on the inner walls of the left and right sides of the sealed box 15, and the end of the spring 20 away from the rubber block 18 is connected to the outer wall of the insulating pad 19, an electromagnetic ring 21 is installed inside the sealed box 15, and the electromagnetic ring 21 is sleeved on the outer wall of the push rod 17, and the end of the push rod 17 close to the electromagnetic ring 21 is made of iron material, a timer 22 is installed inside the sealed box 15, and the timer 22 is electrically connected to the electromagnetic ring 21, a micro battery is arranged inside the partition plate 16, and the micro battery is electrically connected to the electromagnetic ring 21 and the timer 22, and a charging socket is arranged on the outer wall of the valve housing 1, and the charging socket is used to charge the micro battery.

[0052] Furthermore, when the valve plate 14 is closed, the spring 20 above the partition plate 16 is in a natural state, and the rubber block 18 connected to one end of the upper push rod 17 does not fit the outer wall of the filter screen 4, and the spring 20 below the partition plate 16 is in a compressed state, and the rubber block 18 below fits the outer wall of the filter screen 6. When the valve plate 14 is opened, the filter screen 6 and the frame 25 move away from the frame 3, and the spring 20 below loses compression and returns to a natural state, and the rubber block 18 does not fit the outer wall of the filter screen 6. When the separation component 2 is used to filter the fluid and protect the inside of the valve housing 1, when the electromagnetic ring 21 is connected to the micro battery, the electromagnetic ring 21 acquires magnetism, and the separation Don't pull the push rod 17 to move to both sides, so that the spring 20 is stretched, and the push rod 17 drives the rubber block 18 to move, so that the rubber block 18 knocks on the filter 1 4 and the filter 2 6 respectively. When the electromagnetic ring 21 is disconnected from the micro battery, the electromagnetic ring 21 loses its magnetism, and the spring 20 pulls the push rod 17 to move inward, so that the rubber block 18 is separated from the filter 1 4 and the filter 2 6. The time interval is set by the timer 22 to connect or disconnect the gap between the electromagnetic ring 21 and the micro battery. The push rod 17 drives the rubber block 18 to intermittently knock on the filter 1 4 and the filter 2 6 to prevent particulate impurities from clogging the filter 1 4 and the filter 2 6, thereby affecting the use effect of the separation component 2 and improving the fluid transmission effect of the butterfly valve.

[0053] See also Figure 1 , Figure 2 and Figure 8 , an embodiment of the present invention is: a high-sealing butterfly valve, a connecting seat 10 is installed on the top of the valve housing 1, the top of the connecting seat 10 is connected to the top of the top shell 11, a transmission component 12 is arranged inside the top shell 11, a valve stem 13 is installed through the top of the transmission component 12, the valve stem 13 is arranged between the shell top and the inside of the connecting seat 10, and the valve stem 13 extends into the inside of the valve housing 1, an outer wall of the valve stem 13 is sleeved with an angle sensor 23 and a valve plate 14, and the angle sensor 23 is located above the transmission component 12, the valve stem 13 is located inside the valve housing 1, a display screen 24 is installed on the top of the top shell 11, and the display screen 24 is electrically connected to the angle sensor 23, the transmission component 12 includes a transmission worm wheel 31 sleeved on the outer wall of the worm, a transmission worm 32 is installed through the outer wall of the top shell 11, and the transmission worm 32 is meshed with the transmission worm wheel 31, and a hand wheel 33 is connected to the right end of the transmission worm 32.

[0054] Furthermore, when the butterfly valve is opened, the transmission worm 32 is driven to rotate by rotating the hand wheel 33, and the transmission worm 32 is meshed with the transmission worm wheel 31 to drive the transmission worm wheel 31 to rotate. The rotating worm wheel drives the valve stem 13 to rotate, and the valve stem 13 drives the valve plate 14 to rotate, thereby opening the butterfly valve. When the valve stem 13 rotates, the rotation angle of the valve stem 13 is detected by the angle sensor 23, and then the opening angle of the valve plate 14 is obtained, and the opening angle of the valve plate 14 is displayed on the display screen 24, so as to achieve precise control of the opening angle of the valve plate 14 and improve the intelligence of the butterfly valve.

[0055] See also Figure 1 and Figure 7 , an embodiment of the present invention: a high sealing butterfly valve, an auxiliary plate 25 is installed on the back of the valve plate 14, and the auxiliary plate 25 is a semicircular arc structure, and when the valve plate 14 is closed, the auxiliary plate 25 is symmetrically arranged with a group of separation components 2 on the left side of the valve plate 14, and a through hole 26 is opened on the outer wall of the auxiliary plate 25 close to the valve plate 14, and the through hole 26 is close to the inner wall of the valve housing 1, and a mounting groove 28 is opened inside the auxiliary plate 25, and the left outer wall of the mounting groove 28 is connected to the right end of the through hole 26, and an elastic film 27 is installed on the inner wall of the through hole 26, and the elastic film 27 is located at the mounting groove 28. On the left side, a pressure sensor 29 is installed on the inner wall of the mounting groove 28, and the input end of the pressure sensor 29 is in contact with the outer wall of the elastic film 27. An alarm 30 is installed on the top of the shell top, and the alarm 30 is located on one side of the display screen 24. The display screen 24, the alarm 30 and the pressure sensor 29 are electrically connected. An auxiliary plate 25 is installed on the right side outer wall of the filter screen 2 6 of a group of separation components 2 on the right side of the valve plate 14, and the outer wall of the auxiliary plate 25 is slidably connected to the inner wall of the valve shell 1. A through hole 26 is opened on the outer wall of the auxiliary plate 25 on one side close to the filter screen 2 6, and an elastic film 27 is arranged on the inner wall of the through hole 26.

[0056] Furthermore, by providing an auxiliary plate 25, when the valve plate 14 is in a closed state, the contact area with the inside of the valve housing 1 is increased, which is beneficial to improving the sealing effect of the butterfly valve. The rotation angle of the valve plate 14 is checked through the display screen 24. When the valve plate 14 is in a closed state, the rotation angle is displayed as 0, then the pressure sensor 29 is turned on, and the pressure data obtained by the pressure sensor 29 is analyzed. When it is found that the pressure data obtained by the pressure sensor 29 increases, it means that there is a gap between the inside of the valve housing 1 and the outer wall of the valve plate 14, causing the fluid to flow to the right along the inner wall of the valve plate 14 through the gap. The fluid flowing to the right through the valve plate 14 flows to the inside of the through hole 26 and squeezes the elastic film 27, so that the pressure data obtained by the pressure sensor 29 increases, and an audible and visual prompt is issued through the alarm 30 to remind the staff that the sealing of the butterfly valve has deteriorated and the valve plate 14 or the butterfly valve needs to be replaced in time to improve the use effect of the butterfly valve.

[0057] Further, a method for using a high-sealing butterfly valve is provided, and the method for using the high-sealing butterfly valve is as follows:

[0058] S1. When using the butterfly valve, the transmission assembly 12 is rotated to drive the valve stem 13 to rotate, and the valve stem 13 drives the valve plate 14 to rotate to open the valve;

[0059] S2, the fluid passing through the interior of the valve housing 1 flows from left to right through the gap between the valve plate 14 and the inner wall of the valve housing 1;

[0060] S3, after the butterfly valve is used, the transmission assembly 12 is rotated in the reverse direction, driving the valve plate 14 to rotate in the reverse direction, and the butterfly valve is closed;

[0061] S4. When the valve plate 14 rotates in the reverse direction, the valve plate 14 pushes the filter screen 2 6 and the frame 2 5 to move toward the frame 1 3, so that one side of the filter screen 2 6 is in contact with the outer wall of the frame 1 3, and the outer wall of the valve plate 14 is in contact with the outer wall of the filter screen 2 6;

[0062] S5. When the valve plate 14 returns to the closed state, the pressure data is obtained through the pressure sensor 29, and the pressure data is analyzed to see whether there is an increasing trend.

[0063] In step S1, the following steps are also included:

[0064] S11, when the valve stem 13 rotates, the rotation angle of the valve stem 13 is detected by the rotation angle sensor 23, and the angle value is displayed on the display screen 24, thereby obtaining the opening angle of the valve plate 14;

[0065] In step S2, the following steps are also included:

[0066] S21, when the fluid flows, the fluid is filtered by the filter screen 1 4 and the filter screen 2 6, and part of the inner wall of the valve housing 1 is protected by the frame body 1 3 and the frame body 2 5;

[0067] In step S5, the following steps are also included:

[0068] S51. When it is analyzed that the pressure data acquired by the pressure sensor 29 has an increasing trend, the alarm 30 emits an audible and visual alarm to remind the staff that the sealing performance of the butterfly valve has deteriorated.

[0069] Working principle: When the butterfly valve is opened, the rotation angle of the valve plate 14 is detected by the rotation angle sensor 23, and then the opening angle of the valve plate 14 is determined. When the valve plate 14 is opened, the squeeze on the filter screen 26 is gradually reduced, and the spring 19 pushes the filter screen 26 and the frame 25 to move in the rotation direction of the valve plate 14, so that the frame 25 and the frame 13 protect the sealing fitting part of the valve housing 1 and the valve body, and prevent the particle impurities in the fluid from adhering to the inside of the valve housing 1, thereby preventing the particle impurities from causing wear to the inside of the valve housing 1 when the valve plate 14 is closed, which improves the sealing effect of the butterfly valve to a certain extent, and the push rod 17 drives the push rod 17 to move the filter screen 26 and the frame 25 to move in the rotation direction of the valve plate 14, so that the push rod 17 drives the push rod 17 to move the filter screen 26 and the frame 25 to move in the rotation direction of the valve plate 14, so as to protect the sealing part of the valve housing 1 and the valve body, and prevent the particle impurities in the fluid from adhering to the inside of the valve housing 1, thereby preventing the particle impurities from causing wear to the inside of the valve housing 1 when the valve plate 14 is closed, and improves the sealing effect of the butterfly valve to a certain extent. The movable rubber block 18 moves, so that the gap of the rubber block 18 knocks on the filter screen 1 4 and the filter screen 2 6, thereby realizing vibration cleaning of the filter screen 1 4 and the filter screen 2 6, preventing particle impurities from clogging the filter screen 1 4 and the filter screen 2 6, thereby affecting the use effect of the separation component 2, and improving the fluid transmission effect of the butterfly valve. After the butterfly valve is used, the valve plate 14 is rotated to a closed state, and then the pressure sensor 29 is used to detect whether the pressure on the elastic film 27 increases, and then detect whether the sealing of the butterfly valve deteriorates. When the sealing of the butterfly valve changes, the staff is promptly prompted to replace the butterfly valve or its components.

[0070] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-sealing butterfly valve, comprising a valve housing (1), characterized in that: The inner wall of the valve housing (1) is provided with a separation assembly (2), the separation assembly (2) comprising two sets of semicircular arc-shaped frame bodies (3) fixedly mounted on the inner wall of the valve housing (1), and the sides of the two sets of frame bodies (3) close to each other are open; A filter screen 1 (4) is installed on the outer wall of the frame body 1 (3) at a side away from each other, and the outer wall of the filter screen 1 (4) is connected to the inner wall of the valve housing (1); a frame body 2 (5) is slidably connected to the inner wall of the frame body 1 (3), and the frame body 2 (5) is located between the two sets of frame bodies 1 (3); a filter screen 2 (6) is installed on the outer wall of the frame body 2 (5) at a side close to each other, and the outer wall of the filter screen 2 (6) is slidably connected to the inner wall of the valve housing (1); the filter screen 2 (6) is installed on the outer wall of the side away from each other A connecting rod (7) is installed on the side outer wall, and the connecting rod (7) is embedded in the inner wall of the frame body one (3), an arc plate (8) is installed on the end of the connecting rod (7) away from the filter screen two (6), a spring (9) is installed on the outer wall of the arc plate (8) on one side close to the filter screen two (6), and the spring (9) is located above the connecting rod (7), the spring (9) is located inside the frame body one (3), and the end of the spring (9) away from the arc plate (8) is fixedly connected to the inside of the frame body one (3); The side of the frame body 2 (5) close to the filter screen 1 (4) is open, the outer wall of the frame body 2 (5) is in contact with the inner wall of the frame body 1 (3), and the frame body 2 (5) is slidably connected to the frame body 1 (3) and the inner wall of the valve housing (1); The number of installation groups of the frame body 1 (3), the filter screen 1 (4), the frame body 2 (5) and the filter screen 2 (6) are all two, and all are semicircular arc structures. One group of the separation components (2) is located on the left side of the valve plate (14), and the other group is located on the right side of the valve plate (14).

2. A high sealing butterfly valve according to claim 1, characterized in that: A sealing box (15) is installed on the inner wall of the valve housing (1), and the sealing box (15) is located between the filter screen 1 (4) and the filter screen 2 (6). A partition plate (16) is installed on the inner wall of the sealing box (15), and a push rod (17) is slidably connected to the top and bottom wall of the partition plate (16), and one end of the push rod (17) penetrates the inner wall of the sealing box (15) and extends to the outside of the sealing box (15). The end of the push rod (17) located outside the sealing box (15) is connected to a rubber block (18), and the rubber block (18) is respectively connected to the filter screen 1 (4) and the filter screen 2 (6). 6) The outer walls of the sides close to each other are in contact with each other, the outer wall of the side close to each other of the push rod (17) is installed with an insulating pad (19), the inner walls of the left and right sides of the sealing box (15) are both installed with spring 2 (20), and the end of the spring 2 (20) away from the rubber block (18) is connected to the outer wall of the insulating pad (19), an electromagnetic ring (21) is installed inside the sealing box (15), and the electromagnetic ring (21) is sleeved on the outer wall of the push rod (17), and a timer (22) is installed inside the sealing box (15), and the timer (22) is electrically connected to the electromagnetic ring (21).

3. A high sealing butterfly valve according to claim 2, characterized in that: The sealed box (15) is located inside the first frame (3) and the second frame (5), and an insulating coating is provided on the inner wall of the sealed box (15).

4. A high sealing butterfly valve according to claim 1, characterized in that: A connecting seat (10) is installed on the top of the valve housing (1), and a top housing (11) is connected to the top of the connecting seat (10).

5. A high sealing butterfly valve according to claim 4, characterized in that: A transmission assembly (12) is arranged inside the top shell (11), a valve stem (13) is installed through the top of the transmission assembly (12), the valve stem (13) is inserted into the shell top and the inside of the connecting seat (10), and the valve stem (13) extends into the inside of the valve shell (1), an outer wall of the valve stem (13) is sleeved with a rotation angle sensor (23) and a valve plate (14), and the rotation angle sensor (23) is located above the transmission assembly (12), the valve stem (13) is located inside the valve shell (1), and a display screen (24) is installed on the top of the top shell (11), and the display screen (24) is electrically connected to the rotation angle sensor (23).

6. A high sealing butterfly valve according to claim 5, characterized in that: An auxiliary plate (25) is installed on the back of the valve plate (14), and the auxiliary plate (25) is a semicircular arc structure. A through hole (26) is provided on the outer wall of the auxiliary plate (25) on one side close to the valve plate (14). A mounting groove (28) is provided inside the auxiliary plate (25), and the left outer wall of the mounting groove (28) is connected to the right end of the through hole (26). An elastic film (27) is installed on the inner wall of the through hole (26), and the elastic film (27) is located on the left side of the mounting groove (28). A pressure sensor (29) is installed on the inner wall of the mounting groove (28), and the input end of the pressure sensor (29) is in contact with the outer wall of the elastic film (27). An alarm (30) is installed on the top of the shell top, and the alarm (30) is located on one side of the display screen (24). The display screen (24), the alarm (30) and the pressure sensor (29) are electrically connected.

7. A high sealing butterfly valve according to claim 5, characterized in that: The transmission assembly (12) comprises a transmission worm wheel (31) sleeved on the outer wall of the worm, a transmission worm (32) is installed through the outer wall of the top shell (11), and the transmission worm (32) is meshed with the transmission worm wheel (31), and the right end of the transmission worm (32) is connected to a hand wheel (33).

8. A method for using a high-sealing butterfly valve, applicable to the high-sealing butterfly valve according to claim 6, characterized in that: The usage of this high sealing butterfly valve is as follows: S1. When the butterfly valve is used, the transmission assembly (12) is rotated to drive the valve stem (13) to rotate, and the valve stem (13) drives the valve plate (14) to rotate, thereby opening the valve; S2. The fluid passing through the interior of the valve housing (1) flows from left to right through the gap between the valve plate (14) and the inner wall of the valve housing (1); S3. After the butterfly valve is used, the transmission assembly (12) is rotated in the reverse direction to drive the valve plate (14) to rotate in the reverse direction, thereby closing the butterfly valve; S4. When the valve plate (14) rotates in the reverse direction, the valve plate (14) pushes the filter screen 2 (6) and the frame body 2 (5) to move in a direction close to the frame body 1 (3), so that one side of the filter screen 2 (6) is in contact with the outer wall of the frame body 1 (3), and the outer wall of the valve plate (14) is in contact with the outer wall of the filter screen 2 (6); S5. When the valve plate (14) returns to the closed state, pressure data is obtained through the pressure sensor (29), and the pressure data is analyzed to see whether there is an increasing trend.

9. The method for using a high-sealing butterfly valve according to claim 8, characterized in that: In the step S1, the following steps are also included: S11, when the valve stem (13) rotates, the rotation angle of the valve stem (13) is detected by the rotation angle sensor (23), and the angle value is displayed on the display screen (24), thereby obtaining the opening angle of the valve plate (14); In the step S2, the following steps are also included: S21, when the fluid flows, the fluid is filtered by the filter screen 1 (4) and the filter screen 2 (6), and a part of the inner wall of the valve housing (1) is protected by the frame body 1 (3) and the frame body 2 (5); In the step S5, the following steps are also included: S51. When analysis shows that the pressure data acquired by the pressure sensor (29) has an increasing trend, the alarm (30) emits an audible and visual alarm to remind the staff that the sealing performance of the butterfly valve has deteriorated.

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