A grooved handle high-performance bidirectional sealing butterfly valve

Abstract

This invention discloses a grooved handle high-performance bidirectional sealing butterfly valve in the field of butterfly valve technology, comprising a valve body, a valve seat, and a sealing element. The valve body is provided with a valve plate and a valve stem assembly for driving the valve plate to rotate. The valve stem assembly extends to the top of the valve body and is connected to a handle body. An elastic positioning element for controlling its rotation angle is installed on the handle body. The valve seat is detachably connected to the valve body. A movable retaining ring is connected to one side of the valve seat extending into the valve body via an elastic telescopic element. A push-pull assembly is provided between the movable retaining ring and the valve stem assembly. This invention solves the problems of accelerated wear of the sealing element caused by friction between the valve plate and the sealing element during frequent opening and closing of existing bidirectional sealing butterfly valves, as well as accelerated wear and corrosion of the sealing element when exposed to particulate matter or corrosive media, which ultimately affect sealing performance, lead to leakage, and shorten the service life of the butterfly valve.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, specifically a grooved handle high-performance bidirectional sealing butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by a disc-shaped closing element (valve plate or disc) that rotates around the valve stem to open and close. The bidirectional sealing butterfly valve is a type of butterfly valve and can be used in control equipment of industrial pipeline systems in petroleum, chemical, fertilizer, and power plants. It combines media shut-off and flow regulation functions and is suitable for gases, liquids, and corrosive fluids. Its models include the SFD series, employing a double-eccentric or three-dimensional eccentric structure, featuring short opening and closing times and low flow resistance. The bidirectional sealing butterfly valve can be opened and closed by a drive mechanism that rotates the valve stem assembly and valve plate 0-90°.

[0003] In existing bidirectional sealing butterfly valves, friction occurs between the valve plate and the sealing element during frequent opening and closing, leading to wear of the sealing element. Over time, this wear gradually intensifies, eventually affecting the sealing performance of the butterfly valve. Furthermore, when the butterfly valve is open, the sealing element is directly exposed to flowing media containing particulate matter or corrosive substances, which accelerates the wear and corrosion of the sealing element, ultimately causing leakage and reducing the actual service life of the bidirectional sealing butterfly valve. Therefore, those skilled in the art have provided a grooved handle high-performance bidirectional sealing butterfly valve to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a grooved handle high-performance bidirectional sealing butterfly valve to solve the problems of increased wear of the sealing element caused by friction between the valve plate and the sealing element during frequent opening and closing of existing bidirectional sealing butterfly valves, as well as accelerated wear and corrosion of the sealing element when exposed to particulate matter or corrosive media, which ultimately affect sealing performance, lead to leakage and shorten the service life of the butterfly valve.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grooved handle high-performance bidirectional sealing butterfly valve, comprising:

[0006] The valve body is provided with a valve plate and a valve stem assembly for driving the valve plate to rotate. The valve stem assembly extends to the top of the valve body and is connected to a handle body. An elastic positioning element for controlling its rotation angle is installed on the handle body.

[0007] A valve seat is detachably connected to the valve body. A movable retaining ring is connected to one side of the valve seat extending into the valve body via an elastic telescopic member. A push-pull assembly is provided between the movable retaining ring and the valve stem assembly. When the valve stem assembly controls the valve plate to open, the push-pull assembly drives the movable retaining ring away from the valve plate. When the valve plate is closed, the push-pull assembly drives the movable retaining ring closer to the valve plate.

[0008] The sealing element includes a first sealing plate fixedly connected to a movable retaining ring and a second sealing plate fixedly connected to a valve seat. A sealing ring for abutting against the outer ring of a valve plate is integrally formed between the first and second sealing plates. When the movable retaining ring approaches the valve plate, it drives the sealing ring to expand outward through the first and second sealing plates, and when it moves away from the valve plate, it drives the sealing ring to contract inward.

[0009] As a further description of the above technical solution, it also includes:

[0010] A locking plate is provided on the side of the valve plate near the valve stem assembly, which can be rotatably snapped onto the movable retaining ring. A lifting assembly for controlling the rotation of the locking plate is slidably installed inside the valve stem assembly. The lifting assembly extends to the top of the valve body and is connected to the elastic positioning member.

[0011] As a further description of the above technical solution: the cross-section of the sealing ring is an annular shape with a notch on the outer ring, and the inner ring of the sealing ring is integrally formed with a beveled sealing strip for abutting against the outer ring of the valve plate. A fastening spring is placed inside the sealing ring, and the inner rings of the movable retaining ring and the valve seat are integrally formed with corresponding closing retaining rings.

[0012] As a further description of the above technical solution: the valve stem assembly includes an upper valve stem and a lower valve stem that are rotatably connected to the valve body. A connecting block is fixedly installed at one end of the upper valve stem and the lower valve stem located inside the valve body. The connecting block is fixedly connected to the valve plate by bolts. A four-corner rotating rod connected to the handle body is fixedly installed at the top end of the upper valve stem that extends to the outside of the valve body.

[0013] As a further description of the above technical solution: the push-pull assembly includes two sets of connecting rods hinged to the side of the movable retaining ring, and push rods with their ends hinged to the connecting rods are fixedly installed on the upper valve rod and the lower valve rod.

[0014] As a further description of the above technical solution: the elastic telescopic component includes multiple sets of movable rods fixedly installed on the movable retaining ring, the valve seat has a movable groove inside for the end of the movable rod to move, and multiple sets of telescopic springs sleeved on the outer ring of the movable rod are installed between the movable retaining ring and the valve seat.

[0015] As a further description of the above technical solution: the elastic positioning component includes a positioning plate fixedly installed on the top of the valve body and a grip rod rotatably connected to the handle body. The bottom of the grip rod is integrally formed with a hook plate that can be snapped into the corresponding slot inside the outer ring of the positioning plate. A return spring is fixedly installed between the handle body and the grip rod.

[0016] As a further description of the above technical solution: the lifting assembly includes a lifting rod that is slidably installed inside the upper valve stem and the four corner rotating rods. A crossbar is fixedly installed on the top end of the lifting rod extending outside the four corner rotating rods. A fork rod that is slidably installed on the crossbar and fixedly connected to the handle rod is provided. A connecting groove for the fork rod to move is provided on the top of the handle body. A lever is fixedly installed at the bottom end of the lifting rod located inside the valve body. A connecting post that moves through the sliding groove inside the lever is fixedly installed on the locking plate.

[0017] As a further description of the above technical solution: the upper valve stem has an internal cavity, and a baffle is fixedly installed on the surface of the lifting rod inside the cavity. A sealing ring with its top abutting against the inner wall of the cavity is fixedly installed on the baffle, and an auxiliary spring sleeved on the outer ring of the lifting rod is fixedly installed between the bottom of the baffle and the inner wall of the cavity.

[0018] As a further description of the above technical solution: the outer ring of the locking plate is integrally formed with multiple sets of clamping plates, and multiple sets of L-shaped limiting plates corresponding one-to-one with the clamping plates are fixedly installed on the side of the movable retaining ring.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The sealing components include a first sealing plate, a second sealing plate, and a sealing ring. The automatic expansion and contraction of the sealing ring, achieved through the movement of the movable retaining ring, not only ensures efficient sealing when the butterfly valve is closed but also reduces wear between the sealing components and the valve plate when the valve is open. This significantly improves the performance and service life of the sealing structure. Furthermore, the synergistic effect of the push-pull assembly and the movable retaining ring allows the sealing components to fold and retract after the butterfly valve is opened, preventing long-term erosion of the sealing components by the medium inside the valve. This effectively reduces damage to the sealing components, extends the service life of the butterfly valve, and lowers maintenance costs. The dual positioning structure of the elastic positioning component and the locking plate ensures a tight fit between the valve plate and the sealing components after closure, further reducing the possibility of leakage. This dual protection mechanism is particularly suitable for high-vibration operating conditions, effectively preventing the valve plate from loosening due to vibration and improving the stability of the bidirectional sealing butterfly valve during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an existing technology structure;

[0022] Figure 2This is a first schematic diagram of the overall structure of the present invention;

[0023] Figure 3 This is a second schematic diagram of the overall structure of the present invention;

[0024] Figure 4 This is a first sectional view of the overall structure of the present invention;

[0025] Figure 5 This is a second sectional view of the overall structure of the present invention;

[0026] Figure 6 This is a third sectional view of the overall structure of the present invention;

[0027] Figure 7 This is a first schematic diagram of the structure of the handle body, elastic positioning member, part of the valve stem assembly and lifting assembly of the present invention;

[0028] Figure 8 For the present invention Figure 4 A magnified view of A in the middle.

[0029] Legend:

[0030] 10. Valve body; 11. Valve plate; 12. Handle body; 13. Movable retaining ring; 14. Locking plate; 15. Slanted sealing strip; 16. Fastening spring; 17. Sealing retaining ring; 18. Movable groove; 19. Slot; 110. Connecting groove; 111. Slide groove; 112. Accommodating cavity; 113. Baffle; 114. Sealing ring; 115. Auxiliary spring; 116. Slot plate; 117. L-shaped limit plate; 118. Valve seat;

[0031] 20. Valve stem assembly; 201. Upper valve stem; 202. Lower valve stem; 203. Connecting block; 204. Four corner rotating rods;

[0032] 30. Elastic positioning component; 301. Handle bar; 302. Positioning plate; 303. Hook plate; 304. Return spring;

[0033] 40. Push-pull assembly; 401. Linkage rod; 402. Push rod;

[0034] 50. Seal; 501. First sealing plate; 502. Second sealing plate; 503. Sealing ring;

[0035] 60. Elastic telescopic component; 601. Movable rod; 602. Telescopic spring;

[0036] 70. Lifting assembly; 701. Lifting rod; 702. Crossbar; 703. Fork rod; 704. Lever; 705. Connecting column. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 8 In this embodiment of the invention, a grooved handle high-performance bidirectional sealing butterfly valve includes a valve body 10, a valve seat 118, and a sealing element 50. The valve body 10 contains a valve plate 11 and a valve stem assembly 20 for rotating the valve plate 11. The top of the valve stem assembly 20, extending to the outside of the valve body 10, is connected to a handle body 12. An elastic positioning element 30 for controlling its rotation angle is installed on the handle body 12. The front end of the handle body 12 has an opening for clamping the valve stem assembly 20. By tightening the front end of the handle body 12 with bolts, a fixed connection between it and the valve stem assembly 20 can be achieved. In actual use, the operator can rotate the valve stem assembly 20 and the valve plate 11 connected to it by gripping the handle body 12 and the elastic positioning element 30. The rotation of the valve plate 11 opens and closes the flow channel inside the valve body 10.

[0039] The valve seat 118 is detachably connected to the valve body 10 by bolts. The valve seat 118 extends into the valve body 10 and is connected to a movable retaining ring 13 by an elastic telescopic member 60. A push-pull assembly 40 is provided between the movable retaining ring 13 and the valve stem assembly 20. When the valve stem assembly 20 rotates to control the valve plate 11 to open, the push-pull assembly 40 drives the movable retaining ring 13 to move away from the valve plate 11. When the valve stem assembly 20 rotates to control the valve plate 11 to close, the push-pull assembly 40 drives the movable retaining ring 13 to move closer to the valve plate 11.

[0040] The sealing element 50 includes a first sealing plate 501 fixedly connected to the movable retaining ring 13 and a second sealing plate 502 fixedly connected to the valve seat 118. An elastic sealing plate fixedly connected to the component on one side can automatically reset and fold. A sealing ring 503 for abutting the outer ring of the valve plate 11 is integrally formed between the first sealing plate 501 and the second sealing plate 502. When the movable retaining ring 13 moves towards the valve plate 11, the sealing ring 503 can be driven to expand outward through the first sealing plate 501 and the second sealing plate 502. When the movable retaining ring 13 moves away from the valve plate 11, the sealing ring 503 can be driven to contract inward through the first sealing plate 501 and the second sealing plate 502. The sealing ring 503, in conjunction with the valve plate 11, can achieve efficient sealing after the butterfly valve is closed.

[0041] When the bidirectional sealing butterfly valve is opened and closed in actual use, after opening the elastic positioning element 30, the valve stem assembly 20 and valve plate 11 are rotated by the handle body 12. As the valve plate 11 gradually rotates to be fully closed, the movable retaining ring 13 gradually moves closer to the valve plate 11 through the push-pull assembly 40. The moving movable retaining ring 13 can pull the sealing element 50 to fit tightly against the outer ring of the valve plate 11, which can help improve the reliability of the valve's internal seal. As the valve plate 11 gradually rotates to be fully open, the movable retaining ring 13 drives the sealing element 50 to gradually move away from the valve plate 11, which can effectively reduce the wear between the valve plate 11 and the sealing element 50 during opening and closing. The service life of the sealing element 50 and the valve plate 11 can be significantly extended. After the bidirectional sealing butterfly valve is fully opened, the sealing element 50 can be folded between the movable retaining ring 13 and the valve seat 118, which effectively avoids the long-term erosion of the sealing element 50 by corrosive media or particles, causing scratches, grooves or corrosion points, etc., ensuring the flatness of the sealing element 50 surface, thereby extending the service life of the butterfly valve and maintaining good sealing performance.

[0042] Furthermore, the bidirectional sealing butterfly valve also includes a locking plate 14. A locking plate 14 is provided on the side of the valve plate 11 near the valve stem assembly 20, which can be rotatably snapped onto the movable retaining ring 13. The locking plate 14 can be rotatably connected to the valve plate 11 through a bearing. A lifting assembly 70 for controlling the rotation of the locking plate 14 is slidably installed inside the valve stem assembly 20. The lifting assembly 70 extends to the top of the valve body 10 and is connected to the elastic positioning member 30. The outer ring of the locking plate 14 is integrally formed with multiple sets of clamping plates 116. Multiple sets of L-shaped limiting plates 117 corresponding one-to-one with the clamping plates 116 are fixedly installed on the side of the movable retaining ring 13. The clamping plates 116 and L-shaped limiting plates 117 can realize the rotatable snap-fit ​​connection between the locking plate 14 and the movable retaining ring 13.

[0043] When the operator controls the elastic positioning element 30 to open, the elastic positioning element 30 can drive the locking plate 14 and its outer ring clamping plate 116 to rotate through the lifting assembly 70. The clamping plate 116 can rotate to the outside of the L-shaped limit plate 117, disconnecting the connection between the locking plate 14 and the movable retaining ring 13. Then, the valve stem assembly 20 and the valve plate 11 are rotated through the handle body 12. After that, the locking plate 14 is reset through the reset of the elastic positioning element 30.

[0044] When the valve plate 11 is fully closed, the locking plate 14 rotates and snaps into the L-shaped limiting plate 117 of the movable retaining ring 13. The elastic positioning element 30 positions the valve plate 11, and the locking plate 14 positions the movable retaining ring 13. This double protection provides additional fixing force after the valve plate 11 is closed, ensuring a tight fit between the valve plate 11 and the sealing element 50, further reducing the possibility of leakage, effectively preventing the valve from loosening under high vibration conditions, and preventing the valve plate 11 from loosening, thereby improving the stability of the seal.

[0045] During the movement of the movable retaining ring 13, the movable retaining ring 13 drives the sealing ring 503 to contract or expand through the first sealing plate 501. The sealing ring 503 drives the movement of the second sealing plate 502 connected to its other side. The sealing ring 503 has a cross-section with an outer ring with a notch. A fastening spring 16 is placed inside the sealing ring 503. The fastening spring 16 can effectively ensure that the sealing plate and the sealing ring 503 automatically expand and reset to the outer ring without the action of external force, thereby achieving the purpose of folding and storing between the movable retaining ring 13 and the valve seat 118. The fastening spring 16 can also play a certain role in temperature compensation when the sealing ring 503 seals the valve plate 11.

[0046] The inner rings of the movable retaining ring 13 and the valve seat 118 are integrally formed with corresponding sealing retaining rings 17. The outer ring of the movable retaining ring 13 can abut against the inner wall of the valve body 10. The sealing retaining ring 17 at the bottom of the movable retaining ring 13 can move to abut against the sealing retaining ring 17 at the bottom of the valve seat 118. The sealing retaining ring 17, the movable retaining ring 13 and the valve seat 118 can provide a certain closing environment for the folded sealing element 50, effectively reducing the influence of the flowing medium on the sealing element 50 when the valve is opened. The inner ring of the sealing ring 503 is integrally formed with a beveled sealing strip 15 for abutting against the outer ring of the valve plate 11. The sealing ring 503, the sealing sheet and the beveled sealing strip 15 can all be made of materials with a certain elasticity, such as rubber. The beveled sealing strip 15 can increase the contact area with the outer ring of the valve plate 11, thereby further improving the sealing effect on the valve plate 11.

[0047] In one embodiment, see Figures 2-8 Specifically, the valve stem assembly 20 includes an upper valve stem 201 and a lower valve stem 202 rotatably connected to the valve body 10. A connecting block 203 is fixedly installed at one end of the upper valve stem 201 and the lower valve stem 202 located inside the valve body 10. The connecting block 203 is fixedly connected to the valve plate 11 by bolts. The upper valve stem 201 extends to the top of the valve body 10 and is fixedly installed with a four-corner rotating rod 204 connected to the handle body 12. The upper valve stem 201 can be assembled with the valve body 10 through structures such as bushings, packing and pressure plates. These are all existing technologies and will not be described in detail here. The valve stems set up at the top and bottom can provide a certain amount of movement space for the lifting assembly 70.

[0048] Correspondingly, the push-pull assembly 40 includes two sets of connecting rods 401 hinged to the side of the movable retaining ring 13. Push rods 402 with their ends hinged to the connecting rods 401 are fixedly installed on the upper valve rod 201 and the lower valve rod 202. When the upper valve rod 201 and the lower valve rod 202 rotate, they can drive the push rods 402 to rotate together. The push rods 402 can drive the movable retaining ring 13 to move left and right in the inner cavity of the valve body 10 through the connecting rods 401.

[0049] The elastic telescopic component 60 includes multiple sets of movable rods 601 fixedly installed on the side of the movable retaining ring 13 near the valve seat 118. The valve seat 118 has a movable groove 18 for the end of the movable rod 601 to move. Multiple sets of telescopic springs 602 are installed between the movable retaining ring 13 and the valve seat 118 and are sleeved on the outer ring of the movable rod 601. When the movable retaining ring 13 moves, it can drive the movable rod 601 to slide inside the movable groove 18 and the telescopic springs 602 to store force or reset. The movable rods 601 and the telescopic springs 602 improve the stability of the movement of the movable retaining ring 13.

[0050] Based on the above embodiments, see [link to relevant documentation]. Figures 2-8 Specifically, the elastic positioning component 30 includes a positioning plate 302 fixedly installed on the top of the valve body 10 and a handle 301 rotatably connected to the handle body 12. The bottom of the handle 301 is integrally formed with a hook plate 303 that can be snapped into the corresponding slot 19 on the outer ring of the positioning plate 302. A return spring 304 is fixedly installed between the handle body 12 and the handle 301. The bottom of the handle 301 may be provided with a groove for easy gripping by the operator. When the operator grips the handle body 12 and squeezes the handle 301, the handle 301 can drive the hook plate 303 to rotate and the return spring 304 to store force. The rotating hook plate 303 can disengage from the positioning plate 302. Subsequently, the return spring 304 can automatically snap the hook plate 303 into the corresponding slot 19.

[0051] In detail, the lifting assembly 70 includes a lifting rod 701 that is slidably installed inside the upper valve stem 201 and the four corner rotating rods 204. A crossbar 702 is fixedly installed on the top end of the lifting rod 701 extending outside the four corner rotating rods 204. A fork 703 that is slidably installed on the crossbar 702 and fixedly connected to the handle 301 is fixedly connected to it. A connecting groove 110 for the fork 703 to move is opened on the top of the handle body 12. A lever 704 is fixedly installed at the bottom end of the lifting rod 701 inside the valve body 10. A connecting post 705 that moves through the sliding groove 111 inside the lever 704 is fixedly installed on the locking plate 14.

[0052] While the lever 301 is rotating, it can drive the fork 703 to rotate. The fork 703 can drive the lifting rod 701 to move up and down through the crossbar 702. When the hook plate 303 rotates to disengage from the positioning plate 302, the fork 703, crossbar 702 and lifting rod 701 press down. The bottom end of the lifting rod 701 can drive the lever 704 to move down. The lever 704 can drive the locking plate 14 to rotate through the connecting column 705.

[0053] The upper valve stem 201 has an internal cavity 112. A baffle 113 is fixedly installed on the surface of the lifting rod 701 inside the cavity 112. A sealing ring 114 is fixedly installed on the baffle 113, with its top abutting against the inner wall of the cavity 112. An auxiliary spring 115 is fixedly installed between the bottom of the baffle 113 and the inner wall of the cavity 112, and is sleeved on the outer ring of the lifting rod 701. During the lifting and lowering process, the lifting rod 701 can drive the baffle 113 to move up and down inside the cavity 112. The baffle 113 drives the auxiliary spring 115 to extend and retract. The auxiliary spring 115 can provide a certain elastic support for the automatic reset of the lifting rod 701. The sealing ring 114 set on the top of the baffle 113 can prevent the internal flow medium of the butterfly valve from overflowing from the upper valve stem 201.

[0054] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grooved handle high-performance bidirectional sealing butterfly valve, characterized in that, include: The valve body (10) is provided with a valve plate (11) and a valve stem assembly (20) for driving the valve plate (11) to rotate. The valve stem assembly (20) extends to the top of the valve body (10) and is connected to a handle body (12). An elastic positioning element (30) for controlling its rotation angle is installed on the handle body (12). A valve seat (118) is detachably connected to the valve body (10). The valve seat (118) extends into the valve body (10) and is connected to a movable retaining ring (13) via an elastic telescopic member (60). A push-pull assembly (40) is provided between the movable retaining ring (13) and the valve stem assembly (20). When the valve stem assembly (20) controls the valve plate (11) to open, the push-pull assembly (40) drives the movable retaining ring (13) away from the valve plate (11). When the valve plate (11) is controlled to close, the push-pull assembly (40) drives the movable retaining ring (13) closer to the valve plate (11). The sealing element (50) includes a first sealing plate (501) fixedly connected to the movable retaining ring (13) and a second sealing plate (502) fixedly connected to the valve seat (118). A sealing ring (503) for abutting against the outer ring of the valve plate (11) is integrally formed between the first sealing plate (501) and the second sealing plate (502). When the movable retaining ring (13) approaches the valve plate (11), it drives the sealing ring (503) to expand outward through the first sealing plate (501) and the second sealing plate (502). When it moves away from the valve plate (11), it drives the sealing ring (503) to contract inward.

2. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 1, characterized in that, Also includes: A locking plate (14) is provided on the side of the valve plate (11) near the valve stem assembly (20), which can be rotatably snapped onto the movable retaining ring (13). A lifting assembly (70) for controlling the rotation of the locking plate (14) is slidably installed inside the valve stem assembly (20). The lifting assembly (70) extends to the top of the valve body (10) and is connected to the elastic positioning member (30).

3. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 2, characterized in that: The sealing ring (503) has a cross-section of an outer ring with a notch, and the inner ring of the sealing ring (503) is integrally formed with a beveled sealing strip (15) for abutting against the outer ring of the valve plate (11). A fastening spring (16) is placed inside the sealing ring (503), and the inner rings of the movable retaining ring (13) and the valve seat (118) are integrally formed with corresponding closing retaining rings (17).

4. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 2, characterized in that: The valve stem assembly (20) includes an upper valve stem (201) and a lower valve stem (202) rotatably connected to the valve body (10). A connecting block (203) is fixedly installed at one end of the upper valve stem (201) and the lower valve stem (202) inside the valve body (10). The connecting block (203) is fixedly connected to the valve plate (11) by bolts. A four-corner rotating rod (204) connected to the handle body (12) is fixedly installed at the top end of the upper valve stem (201) extending to the outside of the valve body (10).

5. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 4, characterized in that: The push-pull assembly (40) includes two sets of connecting rods (401) hinged to the side of the movable retaining ring (13), and push rods (402) with their ends hinged to the connecting rods (401) are fixedly installed on the upper valve rod (201) and the lower valve rod (202).

6. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 5, characterized in that: The elastic telescopic component (60) includes multiple sets of movable rods (601) fixedly installed on the movable retaining ring (13), and the valve seat (118) has a movable groove (18) for the end of the movable rod (601) to move inside. Multiple sets of telescopic springs (602) sleeved on the outer ring of the movable rod (601) are installed between the movable retaining ring (13) and the valve seat (118).

7. The grooved handle high-performance bidirectional sealing butterfly valve according to claim 4, characterized in that: The elastic positioning component (30) includes a positioning plate (302) fixedly installed on the top of the valve body (10) and a grip (301) rotatably connected to the handle body (12). The bottom of the grip (301) is integrally formed with a hook plate (303) that can be snapped into the corresponding slot (19) on the outer ring of the positioning plate (302). A return spring (304) is fixedly installed between the handle body (12) and the grip (301).

8. A grooved handle high-performance bidirectional sealing butterfly valve according to claim 7, characterized in that: The lifting assembly (70) includes a lifting rod (701) that is slidably installed inside the upper valve stem (201) and the four corner rotating rods (204). A crossbar (702) is fixedly installed on the top end of the lifting rod (701) extending outside the four corner rotating rods (204). A fork rod (703) that is fixedly connected to the handle (301) is slidably installed on the crossbar (702). A connecting groove (110) for the fork rod (703) to move is provided on the top of the handle body (12). A lever (704) is fixedly installed at the bottom end of the lifting rod (701) inside the valve body (10). A connecting post (705) that moves through the inner groove (111) of the lever (704) is fixedly installed on the locking plate (14).

9. A grooved handle high-performance bidirectional sealing butterfly valve according to claim 8, characterized in that: The upper valve stem (201) has an internal cavity (112). A baffle (113) is fixedly installed on the surface of the lifting rod (701) inside the cavity (112). A sealing ring (114) with its top abutting against the inner wall of the cavity (112) is fixedly installed on the baffle (113). An auxiliary spring (115) sleeved on the outer ring of the lifting rod (701) is fixedly installed between the bottom of the baffle (113) and the inner wall of the cavity (112).

10. A grooved handle high-performance bidirectional sealing butterfly valve according to claim 2, characterized in that: The outer ring of the locking plate (14) is integrally formed with multiple sets of clamping plates (116), and the side of the movable retaining ring (13) is fixedly installed with multiple sets of L-shaped limiting plates (117) that correspond one-to-one with the clamping plates (116).

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