Manual turbine flange butterfly valve with opening and closing power assisting device

Abstract

The utility model discloses a manual turbine flange butterfly valve opening and closing power assisting device, and relates to the technical field of butterfly valves. The valve comprises a valve body, a butterfly plate is rotationally connected into the valve body, a mounting box is fixedly connected to the top of the valve body, a driving bin is formed in the mounting box, a follow-up bin is formed in one side of the driving bin, a power bin is formed in one side of the follow-up bin, and one end of the butterfly plate penetrates through the valve body and the mounting box and extends into the follow-up bin; one end of the power bin is fixedly connected with an abutting ring, and one side of the abutting ring is fixedly connected with a reciprocating spring. When the driving assembly is started to drive the butterfly plate to conduct opening and closing operation, the driving assembly is matched with the transmission assembly and the guide assembly to drive the abutting table to be matched with the reciprocating spring to reciprocate in the length direction of the power bin, and the abutting table is matched with the elastic air bag to conduct reciprocating adjustment on air pressure in the follow-up bin; therefore, the lubricating liquid is driven to flow back and forth in the driving bin and the follow-up bin, and the lubricating effect of the lubricating liquid is improved.

Description

Technical Field

[0001] The present application relates to the technical field of butterfly valves, and in particular to a manual turbine flange butterfly valve with an opening and closing assisting device. Background Art

[0002] In the field of fluid control, butterfly valves, as a key regulating and controlling element, are widely used in various pipeline systems to cut off, distribute and change the flow direction of the medium. Among them, manual turbine flange butterfly valves occupy an important position in many industrial fields due to their simple structure, flexible operation, and rapid opening and closing.

[0003] The working principle of the manual turbine flange butterfly valve is relatively intuitive. First, the operator turns the hand wheel, which is connected to the turbine device, to drive the turbine to rotate. The rotation of the turbine further drives the valve stem to move up and down. The movement of the valve stem directly controls the opening and closing of the butterfly plate. The butterfly plate is a key component of the valve, which can rotate in the valve body. When the butterfly plate rotates to a position parallel to the pipeline axis, the valve is in a fully open state and the fluid can pass smoothly; when the butterfly plate rotates to a position perpendicular to the pipeline axis, the valve is closed, preventing the fluid from passing. By adjusting the rotation angle of the butterfly plate, the fluid flow can be precisely controlled.

[0004] However, in actual applications, the opening and closing operations of manual turbine flange butterfly valves often require greater force, especially when the butterfly valve is in a static state for a long time, which can easily make the internal lubricating fluid become viscous, thereby affecting the lubrication effect of the worm gear. Poor lubrication will increase the surface friction of the worm gear and worm gear, and may even cause jamming or uneven rotation, which increases the difficulty of operation and labor intensity, and reduces the efficiency of valve use. Utility Model Content

[0005] The purpose of the present application is to solve the problem that when a butterfly valve is in a stationary state for a long time, its internal lubricating fluid is easily poorly lubricated, thereby increasing the surface friction of the worm wheel and the worm, and may even cause jamming or uneven rotation, thereby increasing the difficulty of operation and labor intensity and reducing the efficiency of valve use. The present application provides a manual turbine flange butterfly valve with an opening and closing assist device.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A manual turbine flange butterfly valve with an opening and closing assist device comprises a valve body, a butterfly plate is rotatably connected to the inside of the valve body, a mounting box is fixedly connected to the top of the valve body, a driving bin is provided inside the mounting box, a follower bin is provided on one side of the driving bin, a power bin is provided on one side of the follower bin, one end of the butterfly plate passes through the valve body and the mounting box and extends to the inside of the follower bin, a resistance ring is fixedly connected to one end of the power bin, a reciprocating spring is fixedly connected to one side of the resistance ring, a resistance table is movably inserted inside the power bin, and the reciprocating spring is installed between the resistance ring and the Between the interference tables, one side of the interference table is fixedly connected to an inclined table, the power warehouse is internally rotatably connected to an L-shaped driving rod, one end of the L-shaped driving rod is fixedly connected to a interference slider adapted to the inclined table, the inside of the interference ring is fixedly connected to an elastic airbag, an oil filling valve is provided on the top of the driving warehouse, a driving component for driving the butterfly plate to rotate is installed inside the follower warehouse, a transmission component for driving the L-shaped driving rod to rotate is installed inside the driving warehouse, and a guide component for guiding the interference table to move along the length direction of the power warehouse is installed inside the power warehouse.

[0008] By adopting the above technical scheme, by setting the coordinated use of the driving component, the transmission component and the guide component, it is convenient to start the driving component to drive the butterfly plate to perform opening and closing operations, so that the driving component cooperates with the transmission component and the guide component to drive the contact table to cooperate with the reciprocating spring to move back and forth along the length direction of the power warehouse, and the contact table cooperates with the elastic airbag to form a reciprocating adjustment on the internal air pressure of the follower warehouse, thereby driving the lubricating fluid to flow back and forth inside the driving warehouse and the follower warehouse, thereby improving the lubricating effect of the lubricating fluid, thereby improving the smoothness of the driving component, reducing the difficulty of operation and labor intensity, and improving the use efficiency of the valve.

[0009] Furthermore, the driving assembly includes a worm rotatably connected to the inside of the driving bin, one end of the butterfly plate extending to the inside of the follower bin is fixedly connected to a worm wheel, and the worm is meshed with the worm wheel.

[0010] By adopting the above technical solution, by setting the coordinated use of the worm and the worm wheel, it is convenient to mesh the worm with the worm wheel by rotating the worm, thereby driving the worm wheel to drive the butterfly plate to rotate, thereby driving the butterfly plate to rotate.

[0011] Furthermore, the transmission assembly includes a synchronous bevel gear 1 fixedly connected to one end of the worm gear, the drive compartment is internally rotatably connected to a transmission bevel gear 1 meshing with the synchronous bevel gear 1, one end of the L-shaped drive rod is fixedly connected to a synchronous bevel gear 2, the power compartment is internally rotatably connected to a transmission bevel gear 2 meshing with the synchronous bevel gear 2, and one end of the transmission bevel gear 2 is fixedly connected to the transmission bevel gear 1.

[0012] By adopting the above technical solution, by setting the synchronous bevel gear 1 and the transmission bevel gear 1, the transmission bevel gear 2 and the synchronous bevel gear 2 for use in coordination, it is convenient to drive the L-shaped drive rod to rotate synchronously while the worm drives the butterfly plate to rotate, thereby driving the L-shaped drive rod to rotate, thereby improving the practicality of the device.

[0013] Furthermore, the guide assembly includes a guide slot symmetrically opened on the inner side of the power compartment, and one end of the abutment platform is symmetrically fixedly connected with a guide slider adapted to the guide slot.

[0014] By adopting the above technical solution, by setting up the coordinated use of the guide groove and the guide slider, it is convenient to drive the abutment table to move along the inside of the power bin so that the abutment table drives the guide groove to slide along the length direction of the guide slider, thereby effectively improving the practicability of the device.

[0015] Furthermore, one end of the abutting sliding block is spherically hinged with a ball bearing, and the ball bearing forms a rolling abutment with the ramp.

[0016] By adopting the above technical solution and arranging the coordinated use of the ball bearing and the ramp, the ball bearing facilitates the formation of rolling friction between the ramp and the L-shaped drive rod, thereby effectively reducing the wear between the ramp and the L-shaped drive rod and extending the service life of the device.

[0017] Furthermore, one end of the worm gear passes through the mounting box and is fixedly connected to a disc, one end of the disc is fixedly connected to an adjusting slider, one end of the adjusting slider is installed with an adjusting slide rod, one end of the adjusting slide rod is provided with an adjusting slide groove, the adjusting slider is slidably connected inside the adjusting slide groove, one end of the adjusting slider is fixedly connected to an adjusting spring, the adjusting spring is installed inside the adjusting slide groove, and one end of the adjusting slider is installed with a locking assembly.

[0018] By adopting the above technical solution and arranging the locking assembly and the adjusting spring for use together, it is convenient to loosen the locking assembly and cooperate with the adjusting spring to push the adjusting slide rod out of one end of the disc along the length direction of the adjusting slide groove, thereby extending the torque of the worm and achieving the effect of turning the worm with less effort.

[0019] Furthermore, the locking assembly includes a locking screw fixedly connected to one end of the adjusting slider, and one end of the locking screw is threadedly connected to a locking nut.

[0020] By adopting the above technical solution, by setting the locking nut and the locking screw for use together, it is convenient to push the gasket and the adjusting slide rod along the length direction of the locking screw to form a tight contact when tightening the locking nut, thereby fixing the adjusting slide rod on one side of the disc.

[0021] Furthermore, a movable sleeve at one end of the locking screw is provided with a gasket, and the gasket is installed between the locking nut and the adjusting slide rod.

[0022] By adopting the above technical solution and arranging the gasket and the locking nut for use in combination, the friction between the locking nut and the adjusting slide rod is effectively improved, thereby improving the stability of the installation.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By setting the coordinated use of the driving component, the transmission component and the guide component, when the driving component is started to drive the butterfly plate to perform opening and closing operations, the driving component cooperates with the transmission component and the guide component to drive the contact table to cooperate with the reciprocating spring to move back and forth along the length direction of the power bin, and the contact table cooperates with the elastic airbag to form a reciprocating adjustment on the internal air pressure of the follower bin, thereby driving the lubricating fluid to flow back and forth inside the driving bin and the follower bin, improving the lubricating effect of the lubricating fluid, thereby improving the smoothness of the driving component, reducing the difficulty of operation and labor intensity, and improving the use efficiency of the valve.

[0025] 2. By setting up the locking assembly and the adjustment spring for use, it is convenient to loosen the locking assembly and cooperate with the adjustment spring to push the adjustment slide rod out of one end of the disc along the length direction of the adjustment slide groove, thereby extending the torque of the worm and achieving the effect of labor-saving rotation of the worm. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is a schematic diagram of the internal structure of the installation box in this application.

[0028] Figure 3 It is an exploded view of the internal structure of the power compartment in this application.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the disc in this application.

[0030] Description of reference numerals:

[0031] 1. Valve body; 2. Butterfly plate; 3. Mounting box; 4. Drive chamber; 5. Follower chamber; 6. Power chamber; 7. Conflict ring; 8. Reciprocating spring; 9. Conflict table; 10. Inclined table; 11. L-shaped drive rod; 12. Conflict slider; 13. Elastic airbag; 14. Oil filling valve; 15. Worm; 16. Worm wheel; 17. Synchronous bevel gear 1; 18. Transmission bevel gear 1; 19. Synchronous bevel gear 2; 20. Transmission bevel gear 2; 21. Guide chute; 22. Guide slider; 23. Ball; 24. Disc; 25. Adjustment slider; 26. Adjustment slide rod; 27. Adjustment chute; 28. Adjustment spring; 29. ​​Locking screw; 30. Locking nut; 31. Gasket. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The embodiment of the present application discloses a manual turbine flange butterfly valve with an opening and closing assisting device.

[0034] Reference Figure 1-Figure 3 A manual turbine flange butterfly valve with an opening and closing assist device comprises a valve body 1, a butterfly plate 2 is rotatably connected inside the valve body 1, a mounting box 3 is fixedly connected to the top of the valve body 1, a driving bin 4 is provided inside the mounting box 3, a follower bin 5 is provided on one side of the driving bin 4, a power bin 6 is provided on one side of the follower bin 5, one end of the butterfly plate 2 passes through the valve body 1 and the mounting box 3, and extends to the inside of the follower bin 5, a resistance ring 7 is fixedly connected to one end of the power bin 6, a reciprocating spring 8 is fixedly connected to one side of the resistance ring 7, a resistance platform 9 is movably inserted inside the power bin 6, and the reciprocating spring 8 is installed between the resistance ring 7 and the resistance platform 9 A ramp 10 is fixedly connected to one side of the abutment platform 9, an L-shaped driving rod 11 is rotatably connected inside the power bin 6, one end of the L-shaped driving rod 11 is fixedly connected to a abutment slider 12 adapted to the ramp 10, an elastic airbag 13 is fixedly connected inside the abutment ring 7, an oil filling valve 14 is provided on the top of the driving bin 4, a driving assembly for driving the butterfly plate 2 to rotate is installed inside the follower bin 5, a transmission assembly for driving the L-shaped driving rod 11 to rotate is installed inside the driving bin 4, and a guide assembly for guiding the abutment platform 9 to move along the length direction of the power bin 6 is installed inside the power bin 6;

[0035] The driving assembly includes a worm 15 rotatably connected to the inside of the driving chamber 4, and one end of the butterfly plate 2 extending to the inside of the follower chamber 5 is fixedly connected to a worm wheel 16, and the worm 15 is meshed with the worm wheel 16;

[0036] Moreover, the transmission assembly includes a synchronous bevel gear 17 fixedly connected to one end of the worm 15, the driving compartment 4 is internally rotatably connected to a transmission bevel gear 18 meshing with the synchronous bevel gear 17, one end of the L-shaped driving rod 11 is fixedly connected to a synchronous bevel gear 2 19, the power compartment 6 is internally rotatably connected to a transmission bevel gear 20 meshing with the synchronous bevel gear 2 19, and one end of the transmission bevel gear 20 is fixedly connected to the transmission bevel gear 18;

[0037] Moreover, the guide assembly includes a guide slot 21 symmetrically arranged inside the power compartment 6, and a guide slider 22 adapted to the guide slot 21 is symmetrically fixedly connected to one end of the abutment platform 9;

[0038] Moreover, one end of the contact slider 12 is spherically hinged with a ball 23 , and the ball 23 forms a rolling contact with the ramp 10 .

[0039] When in use, first inject a proper amount of lubricating liquid into the driving chamber 4 and the follower chamber 5 through the oil filling valve 14, and then rotate the worm 15 to mesh with the worm wheel 16, and at the same time drive the worm wheel 16 to drive the butterfly plate 2 to open and close the valve body 1, and make the worm 15 drive the synchronous bevel gear 17 to mesh with the transmission bevel gear 18, and at the same time make the transmission bevel gear 18 cooperate with the transmission bevel gear 20 to drive the synchronous bevel gear 2 19 to rotate synchronously, so that the synchronous bevel gear 2 19 drives the L-shaped driving rod 11 to guide the ball 23 to roll along the inclined surface of the ramp 10, and make The ball 23 pushes the inclined platform 10 to drive the abutment platform 9 and the guide slide block 22 to move along the length direction of the guide slot 21, and at the same time, the abutment platform 9 cooperates with the abutment ring 7 to squeeze the reciprocating spring 8 along the length direction of the power bin 6 to produce a contraction deformation, and then when the L-shaped driving rod 11 drives the ball 23 to roll to the other end of the surface of the inclined platform 10, the reciprocating spring 8 is relieved of the force to produce a rebound deformation, and rebounds and ejects the abutment platform 9 along the length direction of the guide slot 21, so as to drive the abutment platform 9 to reciprocate along the length direction of the guide slot 21 inside the power bin 6;

[0040] Therefore, when the abutment platform 9 moves along the inner wall of the power chamber 6 to move toward the inside of the follower chamber 5, the abutment platform 9 pushes the air inside the power chamber 6 to pass through the abutment ring 7 to gather inside the elastic airbag 13, and pushes the elastic airbag 13 to expand and deform, and at the same time, one end of the elastic airbag 13 squeezes into the inside of the follower chamber 5, and pushes the lubricating fluid inside the follower chamber 5 to flow into the inside of the driving chamber 4, and then when the reciprocating spring 8 rebounds and pushes the abutment platform 9 to move along the inner wall of the power chamber 6 away from the follower chamber 5, the space between the abutment platform 9 and the elastic airbag 13 The air pressure is reduced, causing the elastic airbag 13 to shrink and deform, while reducing the space occupied by the elastic airbag 13 inside the follower chamber 5, thereby reducing the air pressure inside the follower chamber 5 and allowing the lubricating fluid inside the driving chamber 4 to flow into the follower chamber 5 under the action of low pressure, so as to drive the lubricating fluid to flow back and forth inside the driving chamber 4 and the follower chamber 5, thereby improving the lubricating effect of the lubricating fluid, thereby reducing the surface friction between the worm 15 and the worm wheel 16, improving the smoothness of the device, reducing the difficulty of operation and labor intensity, and improving the efficiency of valve use.

[0041] Reference Figure 1 and Figure 2 , Figure 4 One end of the worm 15 passes through the mounting box 3 and is fixedly connected with a disc 24, one end of the disc 24 is fixedly connected with an adjusting slider 25, one end of the adjusting slider 25 is installed with an adjusting slide rod 26, one end of the adjusting slide rod 26 is provided with an adjusting slot 27, the adjusting slider 25 is slidably connected inside the adjusting slot 27, one end of the adjusting slider 25 is fixedly connected with an adjusting spring 28, the adjusting spring 28 is installed inside the adjusting slot 27, and one end of the adjusting slider 25 is installed with a locking assembly;

[0042] The locking assembly includes a locking screw 29 fixedly connected to one end of the adjusting slider 25, and one end of the locking screw 29 is threadedly connected to a locking nut 30;

[0043] Moreover, a washer 31 is movably sleeved on one end of the locking screw 29 , and the washer 31 is installed between the locking nut 30 and the adjusting slide rod 26 .

[0044] When in use, when the worm 15 needs to be rotated to drive the butterfly plate 2 to open and close, the adjusting spring 28 is set to rebound and push out the adjusting slide rod 26 along the length direction of the adjusting slide groove 27, and one end of the adjusting slide rod 26 is in conflict with the adjusting slider 25 along the length direction of the adjusting slide groove 27, and the other end of the adjusting slide rod 26 is pushed out of one side of the disc 24 along the length direction of the adjusting slide groove 27 to extend the torque of the worm 15, and then the adjusting slide rod 26 is pushed to drive the disc 24 and the worm 15 to rotate, thereby achieving the effect of labor-saving rotation of the worm 15;

[0045] Then, when there is no need to rotate the worm 15, the adjusting slide rod 26 is pushed along the length direction of the adjusting slide groove 27 to squeeze the adjusting spring 28 to produce a contraction deformation and move it completely to one side of the disc 24. Then, by tightening the locking nut 30, the locking nut 30 pushes the gasket 31 along the length direction of the locking screw 29 to form a tight contact with the adjusting slide rod 26, so as to facilitate fixing the adjusting slide rod 26 on one side of the disc 24, thereby effectively reducing the loosening of the worm 15 caused by the collision of uncertain external forces such as wild animals with the adjusting slide rod 26, thereby improving the safety of the device.

[0046] The implementation principle of the manual turbine flange butterfly valve with an opening and closing assist device of this embodiment is as follows: first, the fixing between the adjusting slide rod 26 and the disc 24 is released by loosening the locking nut 30, and then the adjusting spring 28 is used to rebound and push out the adjusting slide rod 26 along the length direction of the adjusting slide groove 27, and one end of the adjusting slide rod 26 is made to contact with the adjusting slider 25 along the length direction of the adjusting slide groove 27, and at the same time, the other end of the adjusting slide rod 26 is pushed out of one side of the disc 24 along the length direction of the adjusting slide groove 27 to extend the torque of the worm 15, and then the adjusting slide rod 26 is pushed to drive the disc 24 and the worm 15 to rotate, thereby achieving the effect of labor-saving rotation of the worm 15;

[0047] Then, the rotating worm 15 is meshed with the worm wheel 16, and the worm wheel 16 is driven to drive the butterfly plate 2 to open and close the valve body 1, and the worm 15 drives the synchronous bevel gear 17 to mesh with the transmission bevel gear 18, and the transmission bevel gear 18 cooperates with the transmission bevel gear 20 to drive the synchronous bevel gear 2 19 to rotate synchronously, so that the synchronous bevel gear 2 19 drives the L-shaped driving rod 11 to guide the ball 23 to roll along the inclined surface of the inclined platform 10, and the ball 23 pushes the inclined platform 10 to drive the contact platform 9 The guide slider 22 moves along the length direction of the guide slot 21, and at the same time, the abutment platform 9 cooperates with the abutment ring 7 to squeeze the reciprocating spring 8 along the length direction of the power bin 6 to produce a contraction deformation. Then, when the L-shaped driving rod 11 drives the ball 23 to roll to the other end of the surface of the ramp 10, the reciprocating spring 8 is relieved of the force to produce a rebound deformation, and rebounds and ejects the abutment platform 9 along the length direction of the guide slot 21, so as to drive the abutment platform 9 to reciprocate along the length direction of the guide slot 21 inside the power bin 6.

[0048] Then, when the abutment platform 9 moves along the inner wall of the power chamber 6 to move closer to the inside of the follower chamber 5, the abutment platform 9 pushes the air inside the power chamber 6 to pass through the abutment ring 7 to gather inside the elastic airbag 13, and pushes the elastic airbag 13 to produce expansion deformation, and at the same time, one end of the elastic airbag 13 is squeezed into the inside of the follower chamber 5, and pushes the lubricating fluid inside the follower chamber 5 to flow into the inside of the driving chamber 4. Then, when the reciprocating spring 8 rebounds and pushes the abutment platform 9 to move away from the follower chamber 5 along the inner wall of the power chamber 6, the air pressure between the abutment platform 9 and the elastic airbag 13 is reduced, and the elastic airbag 13 is contracted and deformed, and at the same time, the space occupied by the elastic airbag 13 inside the follower chamber 5 is reduced, thereby reducing the air pressure inside the follower chamber 5, and the lubricating fluid inside the driving chamber 4 flows into the inside of the follower chamber 5 under the action of low pressure, so as to drive the lubricating fluid to flow back and forth between the driving chamber 4 and the follower chamber 5, thereby improving the lubricating effect of the lubricating fluid.

Claims

1. A manual turbine flange butterfly valve with an opening and closing assist device, comprising a valve body (1), characterized in that: The valve body (1) is internally rotatably connected to a butterfly plate (2); the top of the valve body (1) is fixedly connected to a mounting box (3); a driving chamber (4) is provided inside the mounting box (3); a follower chamber (5) is provided on one side of the driving chamber (4); a power chamber (6) is provided on one side of the follower chamber (5); one end of the butterfly plate (2) passes through the valve body (1) and the mounting box (3) and extends to the inside of the follower chamber (5); one end of the power chamber (6) is fixedly connected to a resistance ring (7); one side of the resistance ring (7) is fixedly connected to a reciprocating spring (8); a resistance platform (9) is movably inserted inside the power chamber (6); the reciprocating spring (8) is installed between the resistance ring (7) and the resistance platform (9); A sloping platform (10) is fixedly connected to one side of the contact platform (9), an L-shaped driving rod (11) is rotatably connected inside the power chamber (6), one end of the L-shaped driving rod (11) is fixedly connected to a resisting slider (12) adapted to the sloping platform (10), an elastic airbag (13) is fixedly connected inside the resisting ring (7), an oil filling valve (14) is arranged on the top of the driving chamber (4), a driving assembly for driving the butterfly plate (2) to rotate is installed inside the follower chamber (5), a transmission assembly for driving the L-shaped driving rod (11) to rotate is installed inside the driving chamber (4), and a guiding assembly for guiding the resisting platform (9) to move along the length direction of the power chamber (6) is installed inside the power chamber (6).

2. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 1, characterized in that: The drive assembly comprises a worm (15) rotatably connected to the interior of the drive bin (4); one end of the butterfly plate (2) extending to the interior of the follower bin (5) is fixedly connected to a worm wheel (16); and the worm (15) is meshed with the worm wheel (16).

3. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 1, characterized in that: The transmission assembly comprises a synchronous bevel gear 1 (17) fixedly connected to one end of the worm (15); a transmission bevel gear 1 (18) meshing with the synchronous bevel gear 1 (17) is rotatably connected inside the drive chamber (4); a synchronous bevel gear 2 (19) is fixedly connected to one end of the L-shaped drive rod (11); a transmission bevel gear 2 (20) meshing with the synchronous bevel gear 2 (19) is rotatably connected inside the power chamber (6); and one end of the transmission bevel gear 2 (20) is fixedly connected to the transmission bevel gear 1 (18).

4. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 1, characterized in that: The guide assembly comprises a guide slot (21) symmetrically arranged inside the power compartment (6), and one end of the abutment platform (9) is symmetrically fixedly connected with a guide slider (22) adapted to the guide slot (21).

5. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 1, characterized in that: One end of the abutting slider (12) is spherically hinged with a ball bearing (23), and the ball bearing (23) forms a rolling abutment with the ramp (10).

6. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 2, characterized in that: One end of the worm (15) passes through the mounting box (3) and is fixedly connected to a disc (24); one end of the disc (24) is fixedly connected to an adjusting slider (25); one end of the adjusting slider (25) is mounted with an adjusting slide rod (26); one end of the adjusting slide rod (26) is provided with an adjusting slide groove (27); the adjusting slider (25) is slidably connected inside the adjusting slide groove (27); one end of the adjusting slider (25) is fixedly connected to an adjusting spring (28); the adjusting spring (28) is mounted inside the adjusting slide groove (27); and one end of the adjusting slider (25) is mounted with a locking assembly.

7. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 6, characterized in that: The locking assembly comprises a locking screw (29) fixedly connected to one end of the adjusting slider (25), and one end of the locking screw (29) is threadedly connected to a locking nut (30).

8. A manual turbine flange butterfly valve with an opening and closing assisting device according to claim 7, characterized in that: A gasket (31) is provided on a movable sleeve at one end of the locking screw (29), and the gasket (31) is installed between the locking nut (30) and the adjusting slide rod (26).

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